Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 86
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

The explosive rise of wireless services necessitates a network connection with high bandwidth, high performance, low mistakes, and adequate channel capacity. Individual mobile users, as well as residential and business clusters are increasingly using the internet and multimedia services, resulting in massive increases in the internet traffic demand. Over the past decade, internet traffic has grown significantly faster than Moore’s law predicted. The current system is facing significant radio frequency spectrum congestion and is unable to successfully transmit growing amounts of (available) data to end users while keeping acceptable delay values in mind. Free space optics is a viable alternative to the current radio frequency technology. This technology has a few advantages, including fast data speeds, unrestricted bandwidth, and excellent security. Since free space optics is invisible to traffic type and data protocol, it may be quickly reliably and profitably integrated into an existing access network. Despite the undeniable benefits of free space optics technology under excellent channel conditions and its wide range of applications, its broad use is hampered by its low link dependability, especially over long distances, caused by atmospheric turbulence-induced decay and weather sensitivity. The best plausible solution is to establish a secondary channel link in the GHz frequency range that works in tandem with the primary free space optics link. A hybrid system that combines free space optics and millimeter wave technologies in this research is presented. The combined system offers a definitive backhaul maintenance, by drastically improving the link range and service availability.
Go to article

Bibliography

  1. Chowdhury, M. , Hasan, M. K., Shahjalal, M., Hossan, M. T. & Jang, Y. M. Optical wireless hybrid networks: trends, opportunities, challenges, and research directions. IEEE Commun. Surv. Tutor. 22, 930–966 (2020). https://doi.org10.1109/COMST.2020.2966855
  2. Liu, G. & Jiang, D. 5G : Vision and requirements for mobile communication system towards year 2020. Chinese J. Eng. 2016, 1–8 (2016). https://doi.org/10.1155/2016/5974586
  3. Ford, R. et al. Achieving ultra-low latency in 5G millimeter wave cellular networks. IEEE Commun. Mag. 55, 196–203 (2017). https://org/10.1109/MCOM.2017.1600407CM
  4. Tunc, C., Ozkoc, M. , Fund, F. & Panwar, S. S. The blind side: latency challenges in millimeter wave networks for connected vehicle applications. IEEE Trans. Veh. Technol. 70, 529–542 (2021). https://doi.org/10.1109/TVT.2020.3046501
  5. Mikolajczyk, J. et al. Optical wireless communications operated at long-wave infrared radiation. J. Electron. Telecommun. 66, 383–387 (2020). https://doi.org/10.24425/ijet.2020.131889
  6. Mikołajczyk, J. et al. Analysis of free-space optics development. Meas. Syst. 24, 653–674 (2017). https://doi.org/10.1515/mms-2017-0060
  7. Son, I. & Mao, S. A survey of free space optical networks ☆. Digit. Commun. Netw. 3, 67–77 (2017). https://doi.org/10.1016/j.dcan.2016.11.002
  8. Khalighi, M. & Uysal, M. Survey on free space optical communication: a communication theory perspective. IEEE Commun. Surv. Tutor. 16, 2231–2258 (2014). https://doi.org/10.1109/COMST.2014.2329501
  9. Rockwell, D. & Mecherle, G. S. Wavelength selection for optical wireless communications systems. Proc. SPIE 4530, 26–35 (2001). https://doi.org/10.1117/12.449812
  10. Bloom, S., Korevaar, E., Schuster, J. & Willebrand, H. Under-standing the performance of free-space optics. Opt. Netw. 2, 178–200 (2003). https://doi.org/10.1364/JON.2.000178
  11. Willebrand, H. & Ghuman, B. Free Space Optics : Enabling Optical Connectivity In Today’s Networks. (Indianapolis, Indiana: SAMS, 2002).
  12. Jeyaseelan, J., Sriram Kumar, D. & Caroline, B. Disaster management using free space optical communication system. Photonic Netw. Commun. 39, 1–14 (2020). https://doi.org/10.1007/s11107-019-00865-9
  13. Anandkumar, D. & Sangeetha, R. A survey on performance enhancement in free space optical communication system through channel models and modulation techniques. Opt. Quantum Electron. 53, 5 (2020). https://doi.org/10.1007/s11082-020-02629-6
  14. Siegel, T. & Chen, S.-P. Investigations of free space optical communications under real-world atmospheric conditions. Pers. Commun. 116, 475–490 (2021). https://doi.org/10.1007/s11277-020-07724-1
  15. Kaur, S. Analysis of inter-satellite free-space optical link perfor-mance considering different system parameters. Opto-Electron. Rev. 27, 10–13 (2019). https://doi.org/10.1016/j.opelre.2018.11.002
  16. Shah, D., Joshi, H. & Kothari, D. Comparative BER analysis of free space optical system using wavelength diversity over exponentiated weibull channel. J. Electron. Telecommun. 67, 665–672 (2021). https://doi.org/10.24425/ijet.2021.137860
  17. Ghassemlooy, Z. & Popoola, W. Terrestrial Free-Space Optical Communications. in Mobile and Wireless Communications (eds. Fares, S. A. & Adachi, F.) 355–392 (IntechOpen, 2010). https://doi.org/10.5772/7698
  18. Ricklin, J. , Hammel, S. M., Eaton, F. D. & Lachinova, S. L. Atmospheric Channel Effects on Free-Space Laser Communication. in Optical and Fiber Communication Reports: Free-Space Laser Communications (eds. Majumdar, A. K. & Ricklin, J. C.) 9–56 (Springer, 2006). https://doi.org/10.1007/978-0-387-28677-8_2
  19. Ghassemlooy, Z., Popoola, W. & Rajbhandari, S. Optical Wireless Communications: System and Channel Modelling with Matlab®. (CRC press, 2019).
  20. Kim, I. , McArthur, B. & Korevaar, E. J. Comparison of Laser Beam Propagation at 785 Nm And 1550 Nm In Fog And Haze For Optical Wireless Communications. in Optical Wireless Communications, Proc. SPIE 4214, 26–37 (2001). https://doi.org/10.1117/12.417512
  21. Al Naboulsi, M. Sizun, H. & de Fornel, F. Fog attenuation prediction for optical and infrared waves. Opt. Eng. 43, 319–329 (2004). https://doi.org/10.1117/1.1637611
  22. Brown, R. W. Optical channels. Fibres, clouds, water and the atmosphere. J. Mod. Opt. 36, 552 (1989). https://doi.org/10.1080/09500348914550651
  23. Sree Madhuri, A., Immadi, G. & Venkata Narayana, M. Estimation of effect of fog on terrestrial free space optical communication link. Pers. Commun. 112, 1229–1241 (2020). https:/doi.org/10.1007/s11277-020-07098-4
  24. Friedlander, S. & Topper, L. Turbulence: Classic Papers on Statistical Theory. (Interscience Publishers, 1961).
  25. Kolmogorov, A. The local structure of turbulence in incom-pressible viscous fluid for very large Reynolds numbers. Proc. R. Soc. A 434, 9–13 (1991). https://doi.org/10.1098/rspa.1991.0075
  26. Zhu, X. & Kahn, J. Free-space optical communication through atmospheric turbulence channels. IEEE Trans. Commun. 50, 1293–1300 (2002). https://doi.org/10.1109/TCOMM.2002.800829
  27. Dat, P. et al. A Study on Transmission of RF Signals over a Turbulent Free Space Optical Link. in 2008 IEEE Int. Topical Meeting on Microwave Photonics jointly held with 2008 Asia-Pacific Microwave Photonics Conf. 173–176 (2008) https://doi.org/10.1109/MWP.2008.4666664
  28. Makarov, D. , Tretyakov, M. Y. & Rosenkranz, P. W. Revision of the 60-GHz atmospheric oxygen absorption band models for practical use. J. Quant. Spectrosc. Radiat. Transf. 243, 106798 (2020). https://doi.org/10.1016/j.jqsrt.2019.106798
  29. He, Q., Li, J., Wang, Z. & Zhang, L. Comparative study of the 60 GHz and 118 GHz oxygen absorption bands for sounding sea surface barometric pressure. Remote Sens. 14, 2260 (2022). https://doi.org/10.3390/rs14092260
  30. Arvas, M. & Alsunaidi, M. Analysis of Oxygen Absorption at 60 GHz Frequency Band. in 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting Proc. 2127–2128 (2019) https://doi.org/10.1109/APUSNCURSINRSM.2019.8888884
  31. ITU-R Recomendation. Attenuation Due to Clouds and Fog https://www.itu.int/rec/R-REC-P.840-3-199910-S/en (1999).
  32. Crane, R. A Two-Component Rain Model For the Prediction of Attenuation and Diversity Improvement https://ntrs.nasa.gov/api/citations/19820025716/downloads/19820025716.pdf (1982).
  33. ITU-R Recomendation. Recommendation Itu-R P.838-1 Specific Attenuation Model for Rain for Use in Prediction Methods https://www.itu.int/dms_pubrec/itu-r/rec/p/R-REC-P.838-1-199910-S!!PDF-E.pdf (1999).
  34. Amarasinghe, Y., Zhang, W., Zhang, R., Mittleman, D. & Ma, J. Scattering of terahertz waves by snow. J. Infrared Millim. Terahertz Waves 41, 215–224 (2020). https://doi.org/10.1007/s10762-019-00647-4
  35. Davis, C. , Smolyaninov, I. I. & Milner, S. D. Flexible optical wireless links and networks. IEEE Commun. Mag. 41, 51–57 (2003). https://doi.org/10.1109/MCOM.2003.1186545
Go to article

Authors and Affiliations

Isanaka Lakshmi Priya
1
ORCID: ORCID
Murugappa Meenakshi
1
ORCID: ORCID

  1. Department of Electronics and Communication, Anna University, Guindy, Chennai 600025, India
Download PDF Download RIS Download Bibtex

Abstract

This study used ISSR markers to assess the genetic diversity of a collection of 15 genotypes of Salix purpurea and 6 interspecific hybrids, employing 40 of 60 tested ISSR primers generating polymorphic amplification products. The PCR-ISSR method was adapted for S. purpurea by optimizing the annealing temperature for each primer. The polymorphism index of ISSR amplification products was 91.8% for all studied genotypes and 70.4% for S. purpurea genotypes. Nei's genetic identity statistics ranged from 0.538 to 0.958. Nei's genetic distance values were used to build a dendrogram (UPGMA) for the investigated genotypes. The dendrogram shows five clusters, and principal coordinate analysis yielded nearly the same genetic relationships among the studied genotypes. The results confirm the usefulness of ISSR markers for determining genetic diversity in S. purpurea.

Go to article

Authors and Affiliations

Paweł Sulima
Jerzy A. Przyborowski
Download PDF Download RIS Download Bibtex

Abstract

The use of foreign bases in derivation and compounding has led to the creation of a very young, but rapidly expanding, fourth sub-lexicon of Contemporary Korean – hybrids. Their growing number enhances the degree of hybridization within the Korean lexical subsystem. Hybrids, however, can also be coined be means of borrowed affixes. It is on these that this article will use to illustrate the growing influence the formation of the global communicative community exerts on Contemporary Korean. It will also address the reasons for borrowing these bound morphemes. Although Korean linguists generally deny the existence of foreign affixes in Korean, this article, based on an analysis of neologisms coined after 2000, will identify -reo, -ijeum, -iseuteu and anti- corresponding to English -er, -ism, -ist and anti-, respectively. Hybrid derivatives with foreign affixes may be treated as marginal, due to their relatively small morphological productivity, in comparison to other well-researched coinages. Nonetheless their existence and the growing popularity of Konglish might be perceived as the beginning of further and even more prominent changes to the Korean language, which in a long-term perspective may also influence the perception of the world by Korean speakers, since the national language not only stores the cultural and material values of the community but also a changing view of the world.
Go to article

Authors and Affiliations

Anna Borowiak
1
ORCID: ORCID

  1. Adam Mickiewicz University, Poznań, Poland
Download PDF Download RIS Download Bibtex

Abstract

We made interspecific crosses to facilitate the introgression of desirable traits of Allium roylei into the Alliumcepa genome. After hand-pollination, 906 interspecific F1Allium cepa × A. roylei plants were obtained by in vitro culture via embryo rescue. Nuclear DNA analysis showed that 97.6% of the regenerants were interspecific F1Allium cepa × A. roylei hybrids. Genomic in situ hybridization (GISH) showed that each hybrid had 16 chromosomes, eight of which were identified as A. cepa and eight as A. roylei chromosomes.

Go to article

Authors and Affiliations

Alicja Chuda
Download PDF Download RIS Download Bibtex

Abstract

Isozyme, RAPD and AFLP markers were evaluated and compared for their ability to determine genetic similarity in a set of 18 parental lines of winter oilseed rape F<sub>1</sub> hybrids developed using CMS ogura. Five isozyme systems, 64 RAPD starters and 23 EcoRI+3/MseI+3 AFLP primer combinations generated 597 polymorphic markers. These polymorphic fragments were chosen for estimation of genetic similarity. Of the total number of polymorphic products, polymorphic zymograms constituted only 3.0% of the markers, 57 RAPD primers 37.7%, and 23 AFLP primer combinations 59.3%. The size of RAPD polymorphic products ranged from 564 to 2100 bp. On average there were four amplified bands per primer, with 61.0% polymorphism. The AFLP polymorphic fragments ranged from 72 to 1352 bp in size. AFLP assays generated 15 bands per primer pair on average and detected roughly four times more bands than with RAPD analysis. The genetic similarity coefficients based on all marker data range from 0.52 to 0.84. The correlation of genetic similarities based on RAPD and AFLP markers was 0.58. Estimated genetic similarity based on isozyme data was not correlated with genetic similarity derived from the two DNA-based markers. The dendrogram constructed with the three types of markers taken together grouped all the winter oilseed rape parental lines into several similar clusters. The genomic distribution and frequency of the RAPD and AFLP markers can serve well as estimators of genetic similarity between parental lines of F<sub>1</sub> CMS ogura hybrids

Go to article

Authors and Affiliations

Alina Liersch
Jan Bocianowski
Marcin Kozak
Iwona Bartkowiak-Broda
Download PDF Download RIS Download Bibtex

Abstract

The subject of this paper is the study of the specificity of the transformation of the urban public spaces of the Western world and the problem of the multi form nature of this phenomenon. The Author uses such concepts as that of the "hybrid" and of "hybridization" borrowed from the field of natural sciences and explains the reasons for their introduction within this specific scope of research in a broad manner.

Go to article

Authors and Affiliations

Dorota Wantuch-Matla
Download PDF Download RIS Download Bibtex

Abstract

Pollution continues to experience a rapid increase so cities in the world have required the use of renewable energy. One of the keys that can prevent climate change with a sustainable system is renewable energy. Renewable energy production, especially for hybrid systems from biomass and wind, is the objective of the analysis in this work. The potential of feedstock for different biofuels such as bio-diesel, bio-ethanol, bio-methane, bio-hydrogen, and biomass is also discussed in this paper. The sustainability of the energy system for the long term is the main focus of work in this investigation. The configuration of the hybrid system between biomass energy and wind energy as well as some problems from various design factors are also presented. Based on the findings, this alternative energy utilization through biomass-based hybrids can save costs and improve environmental conditions, especially for the electrification of off-grid rural areas. This paper will provide important information to policymakers, academics, and investors, especially in carrying out the development and factors related to the utilization of wind-biomass-based hybrid energy systems.
Go to article

Bibliography

  1. Aguilar-Rivera, N., Michel-Cuello, C., Cervantes-Niño, J.J, Gómez-Merino, F.C. Olvera, & Vargas, L.A. (2021). 12 - Effects of public policies on the sustainability of the biofuels value chain. In: Ray RCBT-SB (ed) Applied Biotechnology Reviews. Academic Press, pp 345–379
  2. Al-Ghussain, L., Darwish, Ahmad, A., Abubaker, A. M. & Mohamed, M. A. (2021). An integrated photovoltaic/wind/biomass and hybrid energy storage systems towards 100% renewable energy microgrids in university campuses. Sustain Energy Technol Assessments, 46:101273. DOI:10.1016/j.seta.2021.101273
  3. Alagumalai, A., Mathimani, T., Pugazhendhi, A., Atabani, A.E., Brindhadevi, K. & Canh, N.D. (2020). Experimental insight into co-combustion characteristics of oxygenated biofuels in modified DICI engine. Fuel, 278:118303. DOI:10.1016/j.fuel.2020.118303
  4. Amjith, L.R. & Bavanish, B. (2021a). Design and analysis of 5 MW horizontal axis wind turbine. Mater Today Proc. 37, pp. 3338–3342.
  5. Amjith, L.R. & Bavanish, B. (2021b). Optimization of horizontal axis wind turbine blade using FEA. Mater Today Proc. 37, pp. 3367–3371. DOI:10.1016/j.matpr.2020.09.215
  6. Arias, D.M., Ortíz-Sánchez, E., Okoye, P.U., Rodríguez-Rangel, H., Ortega, A.B., Longoria, A., Domínguez-Espíndola, R. & Sebastian, P.J. (2021). A review on cyanobacteria cultivation for carbohydrate-based biofuels: Cultivation aspects, polysaccharides accumulation strategies, and biofuels production scenarios. Sci Total Environ. 794:148636. DOI:10.1016/j.scitotenv.2021.148636
  7. Arteaga-López, E. & Angeles-Camacho, C. (2021). Innovative virtual computational domain based on wind rose diagrams for micrositing small wind turbines. Energy, 220:119701. DOI:10.1016/j.energy.2020.119701
  8. Arumugam, P., Ramalingam, V. & Bhaganagar, K. (2021). A pathway towards sustainable development of small capacity horizontal axis wind turbines – Identification of influencing design parameters & their role on performance analysis. Sustain Energy Technol Assessments, 44:101019. DOI:10.1016/j.seta.2021.101019
  9. Bodzek, M. (2022). Nanoparticles for water disinfection by photocatalysis: A review. Arch Environ Prot. 48, pp. 3–17. DOI:10.24425/aep.2022.140541
  10. Chen, H., Xia, A., Zhu, X., Huang, Y., Zhu, X. & Liao, Q. (2022). Hydrothermal hydrolysis of algal biomass for biofuels production: A review. Bioresour Technol. 344:126213. DOI:10.1016/j.biortech.2021.126213
  11. Chen, J., Li, X., Jia, W., Shen, S., Deng, S., Ji, B. & Chang, J. (2021). Promotion of bioremediation performance in constructed wetland microcosms for acid mine drainage treatment by using organic substrates and supplementing domestic wastewater and plant litter broth. J Hazard Mater, 404:124125. DOI:10.1016/j.jhazmat.2020.124125
  12. Chilakamarry, C.R., Mimi Sakinah, A.M., Zularisam, A.W., Pandey, A. & Dai-Viet, N. Vo. (2021). Technological perspectives for utilisation of waste glycerol for the production of biofuels: A review. Environ Technol Innov. 24:101902. DOI:10.1016/j.eti.2021.101902
  13. Chmielniak, T. (2019). Wind and solar energy technologies of hydrogen production – a review of issues. Polityka Energ - Energy Policy J. 22, pp.5–20.
  14. Chowdhury, H., Loganathan, B., Mustary, I., Alam, F. & Mobil, S.M.A. (2019). Chapter 12 - Algae for biofuels: The third generation of feedstock. [In:] Basile, A., Dalena, F.B.T-S. and TG, F. (eds). Elsevier, pp 323–344
  15. Chudy, R., Szulecki, K., Siry, J. & Grala, R. (2021). Woody Biomass for Energy Production. Acad - Mag Polish Acad Sci. 62–65. DOI:10.24425/academiaPAS.2021.138414
  16. Council GWE (2021) GWEC global wind report 2021. Glob Wind Energy Counc Brussels, Belgium
  17. Das, P.V.P. C., Mathimani, T. & Pugazhendhi, A. (2021a). A comprehensive review on the factors affecting thermochemical conversion efficiency of algal biomass to energy. Sci Total Environ. 766:144213. DOI:10.1016/j.scitotenv.2020.144213
  18. Das, P.V.P.C., Mathimani, T. & Pugazhendhi, A. (2021b). Recent advances in thermochemical methods for the conversion of algal biomass to energy. Sci Total Environ. 766:144608. DOI:10.1016/j.scitotenv.2020.144608
  19. Deviram, G., Mathimani, T., Anto, S., Ahamed, T.S., Ananth, D.A. & Pugazhendhi, A. (2020). Applications of microalgal and cyanobacterial biomass on a way to safe, cleaner and a sustainable environment. J Clean Prod. 253:119770. DOI:10.1016/j.jclepro.2019.119770
  20. Erdiwansyah, E., Mahidin, M., Husin, H., Nasaruddin, N., Khairil, K., Zaki, M. & Jamaluddin, J. (2020). Investigation of availability, demand, targets, economic growth and development of RE 2017-2050: Case study in Indonesia. International Journal of Coal Science & Technology, 8, pp. 483–499. DOI:10.1007/s40789-020-00391-4
  21. Erdiwansyah, E., Gani, A. M.H.N., Mamat, R. & Sarjono, R.E. (2022). Policies and laws in the application of renewable energy Indonesia: A reviews. AIMS Energy, 10, pp. 23–44. DOI:10.3934/energy.2022002
  22. Erdiwansyah, E., Mahidin, H. H., Nasaruddin, S., Zaki, M. & Muhibbddin. (2021). A critical review of the integration of renewable energy sources with various technologies. Prot Control Mod Power Syst. 6:3. DOI:10.1186/s41601-021-00181-3
  23. Erdiwansyah, E., Mamat, R., Sani, M.S.M., Sudhakar, K., Kadarohman, A. & Sardjono, R.E. (2019a). An overview of Higher alcohol and biodiesel as alternative fuels in engines. Energy Reports, 5, pp.467–479. DOI:10.1016/j.egyr.2019.04.009
  24. Erdiwansyah,E., Mamat, R., Sani, M.S.M. & Sudhakar, K. (2019b). Renewable energy in Southeast Asia: Policies and recommendations. Sci Total Environ. DOI:10.1016/j.scitotenv.2019.03.273
  25. Ergal, İ., Fuchs, W., Hasibar, B., Thallinger, B., Bochmann, G. & Rittmann, S.K-M.R. (2018). The physiology and biotechnology of dark fermentative biohydrogen production. Biotechnol Adv. 36, pp. 2165–2186. DOI:10.1016/j.biotechadv.2018.10.005
  26. Farina, A. & Anctil, A. (2022). Material consumption and environmental impact of wind turbines in the USA and globally. Resour Conserv Recycl. 176:105938. DOI:10.1016/j.resconrec.2021.105938
  27. Ferreira Mota, G., Germano de Sousa, I., Luiz Barros de Oliveira, A., Cavalcante, A.L.G., Moreira, K.S., Cavalcante, F.T.T., Erick da Silva Souza, J., Rafael de Aguiar Falcão, I., Rocha, T.G., Valério, R.B.R., Cristina Freitas de Carvalho, S., Neto, F.S., Serpa, J.F., Karolinny Chaves de Lima, R., Cristiane Martins de Souza, M. & José C.S. dos Santos. (2022). Biodiesel production from microalgae using lipase-based catalysts: Current challenges and prospects. Algal Res. 62:102616. DOI:10.1016/j.algal.2021.102616
  28. Gambelli, D., Alberti, F., Solfanelli, F., Vairo, D. & Zanoli, R. (2017). Third generation algae biofuels in Italy by 2030: A scenario analysis using Bayesian networks. Energy Policy, 103, pp. 165–178. DOI:10.1016/j.enpol.2017.01.013
  29. Gaonkar, R.U. & Hegde, R.N. (2022). An investigation on the performance and viability of a hybrid twisted blade profile for a horizontal axis micro wind turbine. Mater Today Proc. 49, pp. 1200–1209. DOI:10.1016/j.matpr.2021.06.288
  30. Ge, S., Manigandan, S., Mathimani, T., Basha, S., Xia, C., Brindhadevi, K., Unpaprom, Y., Whangchai, K. & Pugazhendhi, A. (2022). An assessment of agricultural waste cellulosic biofuel for improved combustion and emission characteristics. Sci Total Environ. 813:152418
  31. Ge, S., Yek, P.N.Y., Cheng, Y.W., Xia, C., Mahari, W.A.W., Liew, R.K., Peng, W., Yuan, T.Q., Tabatabaei, M., Aghbashlo, M., Sonne, C. & Lam S.S. (2021). Progress in microwave pyrolysis conversion of agricultural waste to value-added biofuels: A batch to continuous approach. Renew Sustain Energy Rev. 135:110148. DOI:10.1016/j.rser.2020.110148
  32. Ghosh, M., Ghosh, A. & Roy, A. (2020). Renewable and Sustainable Materials in Automotive Industry. [In:] Hashmi, S., Choudhury IABT-E of R and SM (eds). Elsevier, Oxford, pp. 162–179
  33. Glivin, G., Edwin, M. & Sekhar, S.J. (2018). Techno‐economic studies on the influences of nonuniform feeding in the biogas plants of educational institutions. Environ Prog Sustain Energy, 37, pp. 2156–2164
  34. Glivin, G., Kalaiselvan, N., Mariappan, V., Premalatha, M., Murugan, P.C. & Sekhar, J. (2021a). Conversion of biowaste to biogas: A review of current status on techno-economic challenges, policies, technologies and mitigation to environmental impacts. Fuel, 302:121153. DOI:10.1016/j.fuel.2021.121153
  35. Glivin, G. & Sekhar, J. (2020a). Simulation of anaerobic digesters for the non-uniform loading of biowaste generated from an educational institution. Lat Am Appl Res Int J. 50, pp. 33–40.
  36. Glivin, G. & Sekhar, S.J. (2020b). Waste potential, barriers and economic benefits of implementing different models of biogas plants in a few Indian educational institutions. BioEnergy Res. 13, pp. 668–682.
  37. Glivin, G., Vairavan, M., Manickam, P. & Santhappan, J.S. (2021b). Techno Economic Studies on the Effective Utilization of Non-Uniform Biowaste Generation for Biogas Production. Anaerob Dig Built Environ. 81.
  38. Goh, Y., Yap, S.P. & Tong, T.Y. (2020). Bamboo: The Emerging Renewable Material for Sustainable Construction. [In:] Hashmi S, Choudhury IABT-E of R and SM (eds). Elsevier, Oxford, pp. 365–376
  39. Guo, T., Guo, X., Gao, Z., Li, S., Zheng, X., Gao, X., Li, R., Wang, T., Li, Y. & Li, D. (2021). Nacelle and tower effect on a stand-alone wind turbine energy output—A discussion on field measurements of a small wind turbine. Appl Energy, 303:117590. DOI:10.1016/j.apenergy.2021.117590
  40. Gururani, P., Bhatnagar, P., Bisht, B., Jaiswal, K.K., Kumar, V., Kumar, S., Vlaskin, M.S., Grigorenko, A.V. & Rindin, K.G. (2022). Recent advances and viability in sustainable thermochemical conversion of sludge to bio-fuel production. Fuel, 316:123351. DOI:10.1016/j.fuel.2022.123351
  41. GWEC (2021). GWEC forecasts 817 GW of wind power in 2021. https://gwec.net/gwec-forecasts-817-gw-of-wind-power-in-2021/#:~:text=The global cumulative installed wind,153.5 GW in 2017-2021.
  42. Heffron, R.J., Körner, M-F., Sumarno, T., Wagner, J., Weibelzahl, M. & Fridgen, G. (2022). How different electricity pricing systems affect the energy trilemma: Assessing Indonesia’s electricity market transition. Energy Econ, 107:105663. DOI:10.1016/j.eneco.2021.105663
  43. Hien, P.D. (2019) Excessive electricity intensity of Vietnam: Evidence from a comparative study of Asia-Pacific countries. Energy Policy, 130, pp. 409–417. DOI:10.1016/j.enpol.2019.04.025
  44. Indonesia C (2021) RI Targets Renewable Energy to Reach 50% by 2050
  45. International Energy Agency IEA, Bank W (2014) Sustainable Energy for All 2013-2014: Global Tracking Framework Report. The World Bank
  46. Jurasz, J. & Mikulik, J. (2017) Economic and environmental analysis of a hybrid solar, wind and pumped storage hydroelectric energy source: a Polish perspective. Bull. Polish Acad. Sci. Tech. Sci. 65, pp. 859–869
  47. Kalinichenko, A. & Havrysh, V. (2019). Feasibility study of biogas project development: technology maturity, feedstock, and utilization pathway. Arch Environ Prot. 45, pp. 68–83. DOI:10.24425/aep.2019.126423
  48. Kandasamy, S., Bhuvanendran, N., Narayanan, M. & He, Z. (2022). Chapter 13 - Thermochemical conversion of algal biomass. [In:] El-Sheekh, M., Abomohra AE-FBT-H of AB (eds). Elsevier, pp. 281–302
  49. Kandasamy, S., Devarayan, K., Bhuvanendran, N., Zhang, B., He, Z., Narayanan, M., Mathimani, T., Ravichandran, S. & Pugazhendhi, A. (2021). Accelerating the production of bio-oil from hydrothermal liquefaction of microalgae via recycled biochar-supported catalysts. J Environ Chem Eng. 9:105321. DOI:10.1016/j.jece.2021.105321
  50. Karpagam, R., Jawaharraj, K. & Gnanam, R. (2021). Review on integrated biofuel production from microalgal biomass through the outset of transesterification route: a cascade approach for sustainable bioenergy. Sci Total Environ. 766:144236. DOI:10.1016/j.scitotenv.2020.144236
  51. Kim, B., Heo, H.Y., Son, J., Yang, J., Chang, Y.K., Lee, J.H. & Lee, J.W. (2019). Simplifying biodiesel production from microalgae via wet in situ transesterification: A review in current research and future prospects. Algal Res. 41:101557. DOI:10.1016/j.algal.2019.101557
  52. Klaimi, R., Alnouri, S.Y. & Stijepović, M. (2021). Design and thermo-economic evaluation of an integrated concentrated solar power – Desalination tri-generation system. Energy Convers Manag. 249:114865. DOI:10.1016/j.enconman.2021.114865
  53. Kulyal, L. & Jalal, P. (2022). Bioenergy, a finer alternative for India: Scope, barriers, socio-economic benefits and identified solution. Bioresour Technol Reports, 17:100947. DOI:10.1016/j.biteb.2022.100947
  54. Kumar, G., Cho, S-K., Sivagurunathan, P., Anburajan, P., Mahapatra, D.M., Park, J.H., Pugazhendhi, A. (2018) Insights into evolutionary trends in molecular biology tools in microbial screening for biohydrogen production through dark fermentation. Int J Hydrogen Energy, 43: pp. 19885–19901. DOI:10.1016/j.ijhydene.2018.09.040
  55. Kumar, G., Mathimani, T., Sivaramakrishnan, R., Shanmugam, S., Bhatia, S.K., Pugazhendhi, A. (2020). Application of molecular techniques in biohydrogen production as a clean fuel. Sci Total Environ. 722:137795. DOI:10.1016/j.scitotenv.2020.137795
  56. Kumar Sharma, A., Kumar Ghodke, P., Manna, S. & Chen, W-H. (2021). Emerging technologies for sustainable production of biohydrogen production from microalgae: A state-of-the-art review of upstream and downstream processes. Bioresour Technol. 342:126057. DOI:10.1016/j.biortech.2021.126057
  57. Lagdani, O., Tarfaoui, M., Nachtane, M., Trihi, M. & Laaouidi, H. (2021). Modal analysis of an iced offshore composite wind turbine blade. Wind Eng. 0309524X211011685
  58. Lin, C-Y. & Lu, C. (2021). Development perspectives of promising lignocellulose feedstocks for production of advanced generation biofuels: A review. Renew Sustain Energy Rev. 136:110445. DOI:10.1016/j.rser.2020.110445
  59. Liu, H., Li, Y., Duan, Z. & Chen, C. (2020). A review on multi-objective optimization framework in wind energy forecasting techniques and applications. Energy Convers Manag. 224:113324. DOI:10.1016/j.enconman.2020.113324
  60. Malik, P., Awasthi, M. & Sinha, S. (2022). A techno-economic investigation of grid integrated hybrid renewable energy systems. Sustain Energy Technol Assessments, 51:101976. DOI:10.1016/j.seta.2022.101976
  61. Mathimani, T. & Mallick, N. (2019). A review on the hydrothermal processing of microalgal biomass to bio-oil - Knowledge gaps and recent advances. J Clean Prod. 217, pp. 69–84. DOI:10.1016/j.jclepro.2019.01.129
  62. Mathimani, T., Sekar, M., Shanmugam, S., Sabir, J.S.M., Chi, N.T.L. & Pugazhendhi, A. (2021). Relative abundance of lipid types among Chlorella sp. and Scenedesmus sp. and ameliorating homogeneous acid catalytic conditions using central composite design (CCD) for maximizing fatty acid methyl ester yield. Sci Total Environ. 771:144700. DOI:10.1016/j.scitotenv.2020.144700
  63. Micallef, D. & Rezaeiha, A. (2021). Floating offshore wind turbine aerodynamics: Trends and future challenges. Renew Sustain Energy Rev. 152:111696. DOI:10.1016/j.rser.2021.111696
  64. Mielcarek-Bocheńska, P. & Rzeźnik, W. (2019) Ammonia emission from livestock productionin Poland and its regional diversity in the years 2005–2017. Arch Environ Prot. 45, pp. 114–121. DOI:10.24425/aep.2019.130247
  65. Mori, A. (2021) 2 Struggles for energy transition in the electricity system in Asian countries. China’s Carbon-Energy Policy Asia’s Energy Transit Carbon Leakage, Relocat Halos 23
  66. Moshood, T.D., Nawanir, G. & Mahmud, F. (2021). Microalgae biofuels production: A systematic review on socioeconomic prospects of microalgae biofuels and policy implications. Environ Challenges, 5:100207. DOI:10.1016/j.envc.2021.100207
  67. Musharavati, F., Khanmohammadi, S. & Pakseresht, A. (2021). A novel multi-generation energy system based on geothermal energy source: Thermo-economic evaluation and optimization. Energy Convers Manag. 230:113829. DOI:10.1016/j.enconman.2021.113829
  68. Narwane, V.S., Yadav, V.S., Raut, R.D., Narkhede, B.E. & Gardas, B.B. (2021). Sustainable development challenges of the biofuel industry in India based on integrated MCDM approach. Renew Energy 164, pp. 298–309. DOI:10.1016/j.renene.2020.09.077
  69. Neupane, D., Kafle, S., Karki, K.R., Kim, D.H. & Pradhan, P. (2022). Solar and wind energy potential assessment at provincial level in Nepal: Geospatial and economic analysis. Renew Energy, 181, pp. 278–291. DOI:10.1016/j.renene.2021.09.027
  70. Oliveira, C.Y.B., D’Alessandro, E.B., Antoniosi Filho, N.R., Lopes, R.G. & Derner, R.B. (2021). Synergistic effect of growth conditions and organic carbon sources for improving biomass production and biodiesel quality by the microalga Choricystis minor var. minor. Sci Total Environ. 759:143476. DOI:10.1016/j.scitotenv.2020.143476
  71. Olsztyńska, I. (2019). Biomass in the fuel mix of the Polish energy and heating sector. Polityka Energ - Energy Policy J. 22, pp. 99–118
  72. Ong, E.S., Rabbani, A.H., Habashy, M.M., Abdeldayem, O.M., Al-Sakkari, E.G. & Rene, E.R. (2021). Palm oil industrial wastes as a promising feedstock for biohydrogen production: A comprehensive review. Environ Pollut. 291:118160. DOI:10.1016/j.envpol.2021.118160
  73. Openshaw, K. (2010). Biomass energy: Employment generation and its contribution to poverty alleviation. Biomass and Bioenergy, 34, pp. 365–378. DOI:10.1016/j.biombioe.2009.11.008
  74. Ortolani, A., Persico, G., Drofelnik, J., Jackson, A. & Campobasso, M.S. (2020). Cross-comparative analysis of loads and power of pitching floating offshore wind turbine rotors using frequency-domain Navier-Stokes CFD and blade element momentum theory. Journal of Physics: Conference Series. IOP Publishing, p 52016
  75. Outlook IIET. (2021). Tracking Progress of Energy Transition in Indonesia. Jakarta Inst Essent Serv Reform
  76. Pichika, S.V.V.S.N., Yadav, R., Geetha Rajasekharan, S., Praveen, H.M. & Inturi, V. (2022). Optimal sensor placement for identifying multi-component failures in a wind turbine gearbox using integrated condition monitoring scheme. Appl Acoust. 187:108505. DOI:10.1016/j.apacoust.2021.108505
  77. Pitchia Krishnan, B., Mathanbabu, M., Sathyamoorthy, G., Gokulnath, K. & Kumar, L.G.S. (2021). Performance estimation and redesign of horizontal axis wind turbine (HAWT) blade. Mater Today Proc. 46, pp. 8025–8031. DOI:10.1016/j.matpr.2021.02.777
  78. Pourrajabian, A., Dehghan, M. & Rahgozar, S. (2021). Genetic algorithms for the design and optimization of horizontal axis wind turbine (HAWT) blades: A continuous approach or a binary one? Sustain Energy Technol Assessments, 44:101022. DOI:10.1016/j.seta.2021.101022
  79. Reilly, L.A. (2020). Exploration of Model-Resolution Dependence of Forecasted Wind Hazards for Small Unmanned Aircraft System Operations. The University of North Dakota ProQuest Dissertations Publishing,   2020. 28085974.
  80. Saha, R., Bhattacharya, D. & Mukhopadhyay, M. (2022). Enhanced production of biohydrogen from lignocellulosic feedstocks using microorganisms: A comprehensive review. Energy Convers Manag. X 13:100153. DOI:10.1016/j.ecmx.2021.100153
  81. Sameeroddin, M., Deshmukh, M.K.G., Viswa, G. & Sattar, M.A. (2021). Renewable energy: Fuel from biomass, production of ethanol from various sustainable sources by fermentation process. Mater Today Proc. DOI:10.1016/j.matpr.2021.01.746
  82. Sangeetha, T., Rajneesh, C.P. & Yan, W-M. (2020). 15 - Integration of microbial electrolysis cells with anaerobic digestion to treat beer industry wastewater. [In:] Abbassi, R., Yadav, A.K., Khan, F. & Garaniya, VBT-IMFC for WT (eds). Butterworth-Heinemann, pp. 313–346
  83. Saravanan, A.P., Pugazhendhi, A. & Mathimani, T. (2020). A comprehensive assessment of biofuel policies in the BRICS nations: Implementation, blending target and gaps. Fuel 272:117635. DOI:10.1016/j.fuel.2020.117635
  84. Sellevold, E., May, T., Gangi, S., Kulakowski, J., McDonnell, I., Hill, D. & Grabowski, M. (2020). Asset tracking, condition visibility and sustainability using unmanned aerial systems in global logistics. Transp Res Interdiscip Perspect. 8:100234. DOI:10.1016/j.trip.2020.100234
  85. Shakya, S. (2020). Performance analysis of wind turbine monitoring mechanism using integrated classification and optimization techniques. J Artif Intell. 2, pp. 31–41.
  86. Shanmugam, S., Mathimani, T., Rene, E.R., Geo, V.E., Arun, A., Brindhadevi, K. & Pugazhendhi, A. (2021a). Biohythane production from organic waste: Recent advancements, technical bottlenecks and prospects. Int J Hydrogen Energy, 46, pp. 11201–11216. DOI:10.1016/j.ijhydene.2020.10.132
  87. Shanmugam, S., Sekar, M., Sivaramakrishnan, R., Raj, T., Ong, E.S., Rabbani, A.H., Rene, E.R., Mathimani, T., Brindhadevi, K. & Pugazhendhi, A. (2021b). Pretreatment of second and third generation feedstock for enhanced biohythane production: Challenges, recent trends and perspectives. Int J Hydrogen Energy, 46, pp. 11252–11268. DOI:10.1016/j.ijhydene.2020.12.083
  88. Sharma, M., Singh, J., Baskar, C. & Kumar, A. (2019). A comprehensive review of renewable energy production from biomass-derived bio-oil. Biotechnol J Biotechnol Comput Biol Bionanotechnol, 100:
  89. Sheng, Y., Mathimani, T., Brindhadevi, K., Basha, S., Elfasakhany, A., Xia, C. & Pugazhendhi, A. (2022). Combined effect of CO2 concentration and low-cost urea repletion/starvation in Chlorella vulgaris for ameliorating growth metrics, total and non-polar lipid accumulation and fatty acid composition. Sci Total Environ, 808:151969. DOI:10.1016/j.scitotenv.2021.151969
  90. Sitarz-Palczak, E., Kalembkiewicz, J. & Galas, D. (2019). Comparative study on the characteristics of coal fly ash and biomass ash geopolymers. Arch Environ Prot. 45, pp. 126–135. DOI:10.24425/aep.2019.126427
  91. Solomin, E. V., Terekhin, A.A., Martyanov, A.S., Shishkov, A.N., Kovalyov, A.A., Ismagilov, D.R. & Ryavkin, G.N. (2022). Horizontal axis wind turbine yaw differential error reduction approach. Energy Convers Manag. 254:115255. DOI:10.1016/j.enconman.2022.115255
  92. Srivastava, R.K., Shetti, N.P., Reddy, K.R., Kwon, E.E., Nadagouda, M.N. & Aminabhavi, T.M. (2021) Biomass utilization and production of biofuels from carbon neutral materials. Environ Pollut. 276:116731. DOI:10.1016/j.envpol.2021.116731
  93. Sudhakar, M.P., Kumar, B.R., Mathimani, T. & Arunkumar, K. (2019). A review on bioenergy and bioactive compounds from microalgae and macroalgae-sustainable energy perspective. J Clean Prod. 228, pp. 1320–1333. DOI:10.1016/j.jclepro.2019.04.287
  94. Sutherland, D.L., McCauley, J., Labeeuw, L., Ray, P., Kuzhiumparambil, U., Hall, C., Doblin, M. & Nguyen, L.N. (2021). How microalgal biotechnology can assist with the UN Sustainable Development Goals for natural resource management. Curr Res Environ Sustain. 3:100050. DOI:10.1016/j.crsust.2021.100050
  95. Ta, D-T., Lin, C-Y., Ta, T-M-N. & Chu, C-Y. (2020). Biohythane production via single-stage fermentation using gel-entrapped anaerobic microorganisms: Effect of hydraulic retention time. Bioresour Techno.l 317:123986. DOI:10.1016/j.biortech.2020.123986
  96. Tarique, J., Sapuan, S.M., Khalina, A., Sherwani, S.F.K., Yusuf, J. & Ilyas, R.A. (2021). Recent developments in sustainable arrowroot (Maranta arundinacea Linn) starch biopolymers, fibres, biopolymer composites and their potential industrial applications: A review. J Mater Res Technol. 13, pp. 1191–1219. DOI:10.1016/j.jmrt.2021.05.047
  97. Thanarasu, A., Periyasamy, K. & Subramanian, S. (2022). An integrated anaerobic digestion and microbial electrolysis system for the enhancement of methane production from organic waste: Fundamentals, innovative design and scale-up deliberation. Chemosphere, 287:131886. DOI:10.1016/j.chemosphere.2021.131886
  98. Thanigaivel, S., Priya, A.K., Dutta, K., Rajendran, S. & Vasseghian, Y. (2022) Engineering strategies and opportunities of next generation biofuel from microalgae: A perspective review on the potential bioenergy feedstock. Fuel, 312:122827. DOI:10.1016/j.fuel.2021.122827
  99. Tuan Hoang, A. & Viet Pham, V. (2021). 2-Methylfuran (MF) as a potential biofuel: A thorough review on the production pathway from biomass, combustion progress, and application in engines. Renew Sustain Energy Rev. 148:111265. DOI:10.1016/j.rser.2021.111265
  100. Update AM (2017) Global wind report. Glob Wind Energy Council.
  101. Velusamy, K., Devanand, J., Senthil Kumar, P., Soundarajan, K., Sivasubramanian, V., Sindhu, J. & Vo, D.V.N. (2021). A review on nano-catalysts and biochar-based catalysts for biofuel production. Fuel, 306:121632. DOI:10.1016/j.fuel.2021.121632
  102. Wang, L., Liu, X. & Kolios, A. (2016). State of the art in the aeroelasticity of wind turbine blades: Aeroelastic modelling. Renew Sustain Energy Rev. 64, pp. 195–210. DOI:10.1016/j.rser.2016.06.007
  103. Whangchai, K., Mathimani, T., Sekar, M., Shanmugam, S., Brindhadevi, K., Hung, T.V., Chinnathambi, A., Alharbi, S.A. & Pugazhendhi, A. (2021). Synergistic supplementation of organic carbon substrates for upgrading neutral lipids and fatty acids contents in microalga. J Environ Chem Eng. 9:105482. DOI:10.1016/j.jece.2021.105482
  104. Wicker, R.J., Kumar, G., Khan, E. & Bhatnagar, A. (2021). Emergent green technologies for cost-effective valorization of microalgal biomass to renewable fuel products under a biorefinery scheme. Chem Eng J. 415:128932. DOI:10.1016/j.cej.2021.128932
  105. Wijayasekera, S.C., Hewage, K., Siddiqui, O., Hettiaratchi, P. & Sadiq, R. (2022). Waste-to-hydrogen technologies: A critical review of techno-economic and socio-environmental sustainability. Int J Hydrogen Energy, 47, pp. 5842–5870. DOI:10.1016/j.ijhydene.2021.11.226
  106. Wójcik, M. & Stachowicz, F. (2019). Influence of sewage sludge conditioning with use of biomass ash on its rheological characteristics. Arch Environ Prot. 45, pp. 92–102. DOI:10.24425/aep.2019.126425
  107. Wu, L., Wei, W., Song, L., Woźniak-Karczewska, M., Chrzanowski, L. & Ni, B.J. (2021). Upgrading biogas produced in anaerobic digestion: Biological removal and bioconversion of CO2 in biogas. Renew Sustain Energy Rev. 150:111448. DOI:10.1016/j.rser.2021.111448
  108. Xu, L., Zhang, Q. & Shi, X. (2019). Stakeholders strategies in poverty alleviation and clean energy access: A case study of China’s PV poverty alleviation program. Energy Policy, 135:111011. DOI:10.1016/j.enpol.2019.111011
  109. Yin, Z., Zhu, L., Li, S., Hu, T., Chu, R., Mo, F., Hu, D., Liu, C. & Li, Bin. (2020). A comprehensive review on cultivation and harvesting of microalgae for biodiesel production: Environmental pollution control and future directions. Bioresour Technol. 301:122804. DOI:10.1016/j.biortech.2020.122804
  110. Zhang, L., Wang, J., Niu, X. & Liu, Z. (2021). Ensemble wind speed forecasting with multi-objective Archimedes optimization algorithm and sub-model selection. Appl Energy, 301:117449. DOI:10.1016/j.apenergy.2021.117449
  111. Zhao, S., Yao, L., He, H., Yiping, Z., Lei, H., Yujia, Z., Yajing, Y. & Jianli, J. (2019). Preparation and environmental toxicity of non-sintered ceramsite using coal gasification coarse slag. Arch Environ Prot. 45, pp. 84–90. DOI:10.24425/aep.2019.127983
  112. Zheng, Y., Zhang, Q., Zhang, Z., Jing, Y., Hu, J., He, C. & Lu, C. (2021). A review on biological recycling in agricultural waste-based biohydrogen production: Recent developments. Bioresour Technol. 126595. DOI:10.1016/j.biortech.2021.126595
  113. Zhuang, X., Liu, J., Wang, C., Zhang, Q. & Ma, L. (2022). A review on the stepwise processes of hydrothermal liquefaction (HTL): Recovery of nitrogen sources and upgrading of biocrude. Fuel, 313:122671. DOI:10.1016/j.fuel.2021.122671
Go to article

Authors and Affiliations

E. Erdiwansyah
ORCID: ORCID
Asri Gani
1 5
ORCID: ORCID
Rizalman Mamat
2
M. Mahidin
ORCID: ORCID
K. Sudhakar
3
ORCID: ORCID
S.M. Rosdi
4
Husni Husin
1
ORCID: ORCID

  1. Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia
  2. College of Engineering, Universiti Malaysia Pahang, Pahang, Malaysia
  3. Energy Centre, Maulana Azad National Institute of Technology, Bhopal, India
  4. Politeknik Sultan Mizan Zainal Abidin, Terengganu
  5. Research Center of Palm Oil and Coconut, Universitas Syiah Kuala, Indonesia
Download PDF Download RIS Download Bibtex

Abstract

In recent years, metal halide perovskites have gained significant attention due to their unique optical and electronic properties of semiconductor materials, which make them ideal for use in sustainable and energy-efficient devices. These devices include solar cells, lasers, and light-emitting diodes. Therefore, this review aims initially to provide an overview of the most important characteristics of metal halide perovskites, including their engineering development in various types, such as those based on lead or lead-free materials, like tin or germanium. Additionally, perovskites made from purely inorganic compounds like caesium bromide, chloride, or iodide, as well as hybrids mixed with organic compounds like formamidinium and methylammonium halides will be discussed. The goal is to improve their stability and efficiency. Secondly, some of the studies have proposed technologies combining electronic and mechanical characteristics of flexibility or rigidity as required, promoting their synthesis with different materials such as polymers (poly methyl methacrylate, polyvinylidene fluoride), biopolymers (starch, cyclodextrin, polylactic acid, and polylysines), among others. Finally, the subject of this work is to establish the main purpose of the research carried out so far, which is to develop simpler and more scalable processes at industrial level to achieve greater efficiency and duration in storage, exposure to visible light, critical environments, humid or high temperatures.
Go to article

Authors and Affiliations

Hariana I. Farfan
1
ORCID: ORCID
Karol L. Roa
1 2
ORCID: ORCID
Hugo F. Castro
1
ORCID: ORCID

  1.  Universidad Pedagógica y Tecnológica de Colombia, Sogamoso, Boyacá, Colombia
  2. National Polytechnic Institute, Ciudad de México, Mexico
Download PDF Download RIS Download Bibtex

Abstract

Nowadays, aluminum-based composites have been produced by pure alumina (Al2O3) or pure graphene nanoplatelets (GNPs) in aluminum matrix because of the high compressive strength of alumina and the solid lubricant properties of graphene. However, there are no studies on the influence of both alumina and graphene reinforced aluminum composites. In this study, Al-Al2O3 and Al-Al2O3-GNPs composites were reinforced with pure alumina (between 0 and 30 wt.%), pure graphene (0, 0.1, 0.3, 0.5 wt.%), and their hybrid forms (Al2O3-GNPs) by the powder metallurgy method. This method involved ultrasonic dispensing, mixing, filtering, drying, pressing, and sintering processes. From the test results, the micro Vickers hardness of pure aluminum (28.2±1 HV) improved to 51.5±0.8 HV (Al-30Al2O3) and 63.1±1 HV (Al-30Al2O3-0.1GNPs). Similarly, the ultimate compressive strength (UCS) enhanced from 92.4±4 MPa (pure aluminum) to 165±4.5 MPa (Al-30Al2O3) and 188±5 MPa (Al-30Al2O3-0.1GNPs), respectively. In conclusion, the Vickers hardness and ultimate compressive strength of aluminum hybrid composites improved up to 0.1 wt.% graphene content. After 0.1 wt.% graphene content, these mechanical properties decreased because of the clumping of graphene nanoparticles.

Go to article

Authors and Affiliations

M. Can Şenel
M. Gürbüz
Download PDF Download RIS Download Bibtex

Abstract

This study analyses the performances of various path controlling strategies for a 3-degrees of freedom wrist exoskeleton, by comparing key indicators, such as rise time, steady-state error, and implementation difficulty. A model was built to describe both system’s kinematics and dynamics, as well as 3 different controllers (PID, PD¸, and a hybrid force/position controller) that were designed to allow each joint to perform smooth motions within anatomic ranges. The corresponding simulation was run and assessed via Matlab (version 2020a). In addition to the performance comparison, remarkable characteristics could be identified among controllers. PD¸ showed higher response speed than the other controllers (about 4 times), and PID was reinforced as the technique with the easiest implementation due to the smallest matrices. The study also allowed to greater potential of the hybrid controller to interact with its environment, i.e., the robotic device.
Go to article

Authors and Affiliations

Valeria Avilés
1
Oscar F. Avilés
1
Jorge Aponte
1
Oscar I. Caldas
1
Mauricio F. Mauledoux
1

  1. Davinci Research Group, Mechatronics Engineering, Militar Nueva Granada University, Cr 11 No 101-80, Bogotá, Colombia
Download PDF Download RIS Download Bibtex

Abstract

To improve the user’s localization estimation in indoor and outdoor environment a novel radiolocalization system using deep learning dedicated to work both in indoor and outdoor environment is proposed. It is based on the radio signatures using radio signals of opportunity from LTE an WiFi networks. The measurements of channel state estimators from LTE network and from WiFi network are taken by using the developed application. The user’s position is calculated with a trained neural network system’s models. Additionally the influence of various number of measurements from LTE and WiFi networks in the input vector on the positioning accuracy was examined. From the results it can be seen that using hybrid deep learning algorithm with a radio signatures method can result in localization error 24.3 m and 1.9 m lower comparing respectively to the GPS system and standalone deep learning algorithm with a radio signatures method in indoor environment. What is more, the combination of LTE and WiFi signals measurement in an input vector results in better indoor and outdoor as well as floor classification accuracy and less positioning error comparing to the input vector consisting measurements from only LTE network or from only WiFi network.
Go to article

Authors and Affiliations

Sebastian Urwan
1
Dominika R. Wysocka
1
Alicja Pietrzak
1
Krzysztof K. Cwalina
1

  1. Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 80-233 Gdansk, Poland
Download PDF Download RIS Download Bibtex

Abstract

In order to enhance bioactive properties of titanium 99.2 used in implantology and various biomedical applications, numerous methods to form tight oxide coatings are being investigated. Some of these interesting techniques for generating TiO2 coatings include: electrochemical methods with anodizing, electric discharge treatment, plasma methods (PVD) and diffusive methods (i.e. oxidation in a fluidized bed). Each method aims to create a thin homogenous oxide coating characterized with thermal stability and repassivation ability in the presence of body fluid environment. However, new methods are still sought for increasing the biocompatibility of the substrate following a change in the intensity of depositing on the oxide coating compounds with high biocompatibility with body tissues, including hydroxyapatite, which constitutes the basis for subsequent osseointegration processes. The article presents investigation of HAp formation on titanium substrate surface after hybrid oxidation process. Hybrid surface treatments combine methods of fluidized bed atmospheric diffusive treatment FADT with the PVD surface treatment realized with different parameters (FADT – 640°C / 8h and PVD – magnetron sputtering with TiO2 target). In order to investigate the effects of hybrid oxidation and the formation of HAp molecules, SEM-EDS, SEM-EBSD, STEM-EDS, RS, nanoindentation and Kokubo bioactivity tests (c-SBF2) were carried out. The hybrid method of titanium oxidation, proposed by the Author, presents a new outlook on the modification and development of the properties of oxide coatings in the area of biomedical applications. Combining the ways of Ti Grade 2 oxidation in the hybrid method highly improves the formation of hydroxyapatite compounds and shows the potential of applying such a technique in implantology, where the intensive growth of bone tissues is crucial.

Go to article

Authors and Affiliations

J.J. Jasinski
Download PDF Download RIS Download Bibtex

Abstract

The intercalation into interlayer spaces of montmorillonite (MMT), obtained from natural calcium bentonite, was investigated. Modification of MMT was performed by the poly(acrylic acid-co-maleic acid) sodium salt (co-MA/AA). Efficiency of modification of MMT by sodium salt co-MA/AA was assessed by the infrared spectroscopic methods (FTIR), X-ray diffraction method (XRD) and spectrophotometry UV-Vis. It was found, that MMT can be relatively simply modified with omitting the preliminary organofilisation – by introducing hydrogel chains of maleic acid-acrylic acid copolymer in a form of sodium salt into interlayer galleries. A successful intercalation by sodium salt of the above mentioned copolymer was confirmed by the powder X-ray diffraction (shifting the reflex(001) originated from the montmorillonite phase indicating an increase of interlayer distances) as well as by the infrared spectroscopy (occurring of vibrations characteristic for the introduced organic macromolecules). The performed modification causes an increase of the ion exchange ability which allows to assume that the developed hybrid composite: MMT-/maleic acid-acrylic acid copolymer (MMT-co- MA/AA) can find the application as a binding material in the moulding sands technology. In addition, modified montmorillonites indicate an increased ability for ion exchanges at higher temperatures (TG-DTG, UV-Vis). MMT modified by sodium salt of maleic acid-acrylic acid copolymer indicates a significant shifting of the loss of the ion exchange ability in the direction of the higher temperature range (500–700°C).

Go to article

Authors and Affiliations

B. Grabowska
S. Cukrowicz
Ż. Kurleto-Kozioł
K. Kaczmarska
D. Drożyński
M. Sitarz
A. Bobrowski
Download PDF Download RIS Download Bibtex

Abstract

The concept of a hybrid scheme with connection of SIDH and ECDH is nowadays very popular. In hardware implementations it is convenient to use a classical key exchange algorithm, which is based on the same finite field as SIDH. Most frequently used hybrid scheme is SIDH-ECDH. On the other hand, using the same field as in SIDH, one can construct schemes over Fpn, like Diffie-Hellman or XTR scheme, whose security is based on the discrete logarithm problem. In this paper, idea of such schemes will be presented. The security of schemes, which are based on the discrete logarithm problem over fields Fp; Fp2 ; Fp4 ; Fp6 and Fp8 , for primes p used in SIDH, will be analyzed. At the end, the propositions of practical applications of these schemes will be presented.

Go to article

Authors and Affiliations

Michał Wroński
Elżbieta Burek
Łukasz Dzierzkowski
Download PDF Download RIS Download Bibtex

Abstract

In this study, the electrospray deposition (ESD) method was used to deposit carbon nanotubes (CNT) onto the surfaces of carbon fibers (CF) in order to produce hybrid carbon fiber-carbon nanotubes (CF-CNT) which is rarely reported in the past. Extreme high-resolution field emission scanning electron microscopy (XHR-FESEM), high-resolution transmission electron microscopy (HRTEM) and x-ray photoelectron spectroscopy (XPS) were used to analyse the hybrid carbon fiber-carbon nanotube (CF-CNT). The results demonstrated that CNT was successfully and homogenously distributed on the CF surface. Hybrid CF-CNT was then prepared and compared with CF without CNT deposition in terms of their tensile properties. Statistically, the tensile strength and the tensile modulus of the hybrid CF-CNT were increased by up to 3% and 25%, respectively, as compared to the CF without CNT deposition. The results indicated that the ESD method did not cause any reduction of tensile properties of hybrid CF-CNT. Based on this finding, it can be prominently identified some new and significant information of interest to researchers and industrialists working on CF based products.
Go to article

Authors and Affiliations

Muhammad Razlan Zakaria
1 2
ORCID: ORCID
Hazizan Md Akil
3
ORCID: ORCID
Mohd Firdaus Omar
1 2
ORCID: ORCID
Mohd Mustafa Al Bakri Abdullah
1 2
ORCID: ORCID
Shayfull Zamree Abd Rahim
2
ORCID: ORCID
M. Nabiałek
4
ORCID: ORCID
J.J. Wysłocki
4
ORCID: ORCID

  1. Universiti Malaysia Perlis, Faculty of Chemical Engineering Technology, Kompleks Pengajian Jejawi 2, 02600 Arau, Perlis, Malaysia
  2. Universiti Malaysia Perlis, Geopolymer & Green Technology, Centre of Excellent (CEGeoGTech) Perlis, Malaysia
  3. Universiti Sains Malaysia, School of Materials and Mineral Resources Engineering, Engineering Campus, 14300 Nibong Tebal, Pulau Pinang, Malaysia
  4. Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Department of Physics 42-201 Czestochowa, Poland
Download PDF Download RIS Download Bibtex

Abstract

The paper presents a model of a car with special attention given to the drive system. Two possible drive systems were considered: with standard differential and independent drive of each wheel by means of an electric motor. In both cases, flexibilities of live axle shafts have been taken into consideration. A 3D model of the car was assumed. The model consists of a system of rigid bodies connected one with another by means of elastic-damping elements. The phases of static and kinetic friction were considered in the steering and drive systems. The method of homogenous transformations was used in the mathematical description. The results of computer simulations are presented.
Go to article

Authors and Affiliations

Marek Szczotka
Stanisław Wojciech
Download PDF Download RIS Download Bibtex

Abstract

The paper shows the hybrid method of stress and strain distributions analysis. In the method, the results of displacement measurement were used as boundary conditions in the numerical analysis of the tested objects. The numerical analysis was performed with the use of the finite element method (FEM), whereas measurements of displacement were made by laser grating interferometry technique (moire interferometry). Examples of tests presented in the paper show good efficiency of the method in the analysis of stress and strain distribution in the areas of their heterogeneous distribution. Mutual completion of laser grating interferometry and finite element method makes it possible to exclude their disadvantages creating broader' possibilities for research impossible to achieve in separate use.
Go to article

Authors and Affiliations

Dariusz Boroński
Download PDF Download RIS Download Bibtex

Abstract

Triploid viviparous onions [Allium x cornutum Clementi ex Visiani 1842, syn Allium cepa L. var. viviparum Metzg. (Alef.), auct.] (2n = 3x = 24), are known in some countries only as rare relict crops. In other parts of the world they are still traditionally or even commercially cultivated. In previous cytogenetic studies of the Croatian triploid viviparous onion Ljutika, Giemsa C-banding, chromosome pairing analysis during meiosis, and genomic hybridization in situ indicated a complex hybrid with highly heterozygous karyotype structure, with possible triparental genome organization. This study continues an analysis of the karyotype structure of Ljutika. Staining with fluorochromes CMA3 (Chromomycin A3) and Dapi (4,6-diamidino-2-phenylindole) confirmed previous results from Giemsa C-banding and revealed GC-rich heterochromatic regions associated mainly with chromosome ends and nucleolus organizing regions (NORs), and only a few interstitial bands. Fish mapping of the ribosomal 18S-5.8S-26S genes revealed two major rDNA signals on the short arms of two subtelocentric satellite chromosomes in almost all metaphase plates of Ljutika. The largest subtelocentric chromosome lacked rDNA signals. A significantly smaller rDNA signal was occasionally located on one small submetacentric chromosome. These results are in agreement with previously published results from identification of NORs by silver-staining technique, which confirmed a maximum three nucleoli in interphase nuclei. We discuss the molecular mechanisms underlying rearrangements and activity of ribosomal genes in the triploid karyotype.

Go to article

Authors and Affiliations

Ivana Lepen
Jasna Puizina
Download PDF Download RIS Download Bibtex

Abstract

Autonomous manipulation of group objects requires the gripper/robot hand to achieve high productivity without poor outcomes such as object slippage and damage. This article develops the robot hand capable of achieving effective performance in each trial of grasping the group objects. Our proposed robot hand consists of two symmetrical groups of hybrid fingers having soft pads on the grasping interfaces, which operate as a comb. The grasping ability of this robot hand was theoretically and experimentally validated by handling three groups of objects showcases: tea packs, toothbrushes, and mixing sticks.Additionally, validation resultswere compared with those of another soft robot hand having soft Pneunet fingers. In each trial, the experimental results showed that the proposed robot hand with hybrid fingers achieved more stable grasping states characterized by a higher number of grasped objects than those in the case of the soft robot hand. Also, experimental results were in good agreement with the predictions of the proposed theoretical analysis. Finally, better performances of the hybrid robot hand in handling the group object provide the bases for developing a novel-robotic application in industrial production.
Go to article

Bibliography

[1] D. Rus and M.T. Tolley. Design, fabrication and control of soft robots. Nature, 521:467–475, 2015. doi: 10.1038/nature14543.
[2] S.N. Gorb. Biological attachment devices: exploring nature’s diversity for biomimetics. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 366(1870):1557–1574, 2008. doi: 10.1098/rsta.2007.2172.
[3] S. Kim, M. Spenko, S. Trujillo, B. Heyneman, V. Mattoli, and M.R. Cutkosky. Whole body adhesion: hierarchical, directional and distributed control of adhesive forces for a climbing robot. Proceedings 2007 IEEE International Conference on Robotics and Automation (ICRA), pages 1268–1273, 2007. doi: 10.1109/ROBOT.2007.363159.
[4] E. W. Hawkes, H. Jiang, D. L. Christensen, A. K. Han, and M. R. Cutkosky. Grasping without squeezing: Design and modeling of shear-activated grippers. IEEE Transactions on Robotics, 34(2):303–316, 2018. doi: 10.1109/TRO.2017.2776312.
[5] J. Shintake, S. Rosset, B. Schubert, D. Floreano, and H. Shea. Versatile soft grippers with intrinsic electroadhesion based on multifunctional polymer actuators. Advanced Materials, 28(2):231–238, 2016. doi: 10.1002/adma.201504264.
[6] B. Mazzolai, A. Mondini, F. Tramacere, G. Riccomi, A. Sadeghi, G. Giordano, E. Del Dottore, M. Scaccia, M. Zampato, and S. Carminati. Octopus-inspired soft arm with suction cups for enhanced grasping tasks in confined environments. Advanced Intelligent Systems, 1(6):1900041, 2019. doi: 10.1002/aisy.201900041.
[7] P.V. Nguyen and V.A. Ho. Grasping interface with wet adhesion and patterned morphology: Case of thin shell. IEEE Robotics and Automation Letters, 4(2):792–799, 2019. doi: 10.1109/LRA.2019.2893401.
[8] D.N. Nguyen, N.L. Ho, T.-P. Dao, and C.N. Le. Multi-objective optimization design for a sand crab-inspired compliant microgripper. Microsystem Technologies, 25, 2019. doi: 10.1007/s00542-019-04331-4.
[9] J. Hughes, U. Culha, F. Giardina, F. Guenther, A. Rosendo, and F. Iida. Soft manipulators and grippers: A review. Frontiers in Robotics and AI, 3:69, 2016. doi: 10.3389/frobt.2016.00069.
[10] Phoung H. Le, Thien P. Do, and Du B. Le. A soft pneumatic finger with different patterned profile. International Journal of Mechanical Engineering and Robotics Research, 10(10):577– 582, 2021. doi: 10.18178/ijmerr.10.10.577-582.
[11] T.-P. Dao,N.L. Ho, T.T. Nguyen, H.G. Le, P.T. Thang, H.-T. Pham, H.-T. Do, M.-D. Tran, and T.T. Nguyen. Analysis and optimization of a micro-displacement sensor for compliant microgripper. Microsystem Technologies, 23:5375–5395, 2017. doi: 10.1007/s00542-017-3378-9.
[12] P.V. Nguyen, Q.K. Luu, Y. Takamura, and V.A. Ho. Wet adhesion of micro-patterned interfaces for stable grasping of deformable objects. 2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), pages 9213–9219, 2020. doi: 10.1109/IROS45743.2020.9341095.
[13] M. Calisti, M. Giorelli, G. Levy, B. Mazzolai, B. Hochner, C. Laschi, and P. Dario. An octopus-bioinspired solution to movement and manipulation for soft robots. Bioinspiration & Biomimetics, 6(3):036002, 2011. doi: 10.1088/1748-3182/6/3/036002.
[14] K.C. Galloway, K.P. Becker, B. Phillips, J. Kirby, S. Licht, D. Tchernov, R.J. Wood, and D.F. Gruber. Soft robotic grippers for biological sampling on deep reefs. Soft Robotics, 3(1):23–33, 2016. doi: 10.1089/soro.2015.0019.
[15] 2F-85 and 2F-140 Grippers. https://robotiq.com/products/2f85-140-adaptive-robot-gripper.
[16] Forestry Cranes https://marchesigru.com/en/forestry-cranes-2.
[17] H. Hyyti, V.V. Lehtola, and A. Visala. Forestry crane posture estimation with a two-dimensional laser scanner. Journal of Field Robotics, 35(7):1025–1049, 2018. doi: 10.1002/rob.21793.
[18] K.W. Allen. Encyclopedia of Physical Science and Technology – Materials. Elsevier, 2001.
[19] P.V. Nguyen, T.H. Bui, and V.A. Ho. Towards safely grasping group objects by hybrid robot hand. 2021 4th International Conference on Robotics, Control and Automation Engineering (RCAE), pages 389–393, 2021. doi: 10.1109/RCAE53607.2021.9638841.
[20] T.-L. Le, J.-C. Chen, F.-S. Hwu, and H.-B. Nguyen. Numerical study of the migration of a silicone plug inside a capillary tube subjected to an unsteady wall temperature gradient. International Journal of Heat and Mass Transfer, 97:439–449, 2016. doi: 10.1016/j.ijheatmasstransfer.2015.11.098.
[21] P.V. Nguyen and V.A. Ho. Wet adhesion of soft curved interfaces with micro pattern. IEEE Robotics and Automation Letters, 6(3):4273–4280, 2021. doi: 10.1109/LRA.2021.3067277.
[22] J. Gao, W.D. Luedtke, D. Gourdon, M. Ruths, J.N. Israelachvili, and U. Landman. Frictional forces and amontons’ law: From the molecular to the macroscopic scale. The Journal of Physical Chemistry B, 108(11):3410–3425, 2004. doi: 10.1021/jp036362l.
[23] D. Maruthavanan, A. Seibel, and J. Schlattmann. Fluid-structure interaction modelling of a soft pneumatic actuator. Actuators, 10(7):163, 2021. doi: 10.3390/act10070163.
[24] D.X. Phu, V. Mien, P.H.T. Tu, N.P. Nguyen, and S.-B. Choi. A new optimal sliding mode controller with adjustable gains based on Bolza-Meyer criterion for vibration control. Journal of Sound and Vibration, 485:115542, 2020. doi: 10.1016/j.jsv.2020.115542.
Go to article

Authors and Affiliations

Pho Van Nguyen
1 2
ORCID: ORCID
Phi N. Nguyen
2
Tan Nguyen
2
Thanh Lanh Le
2

  1. Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa, Japan
  2. Department of Technology, Dong Nai Technology University, Bien Hoa 810000, Vietnam
Download PDF Download RIS Download Bibtex

Abstract

Hybrid Renewable Energy Systems connected to the traditional power suppliers are an interesting technological solution in the field of energy engineering and the integration of renewable systems with other energy systems can significantly increase in energy reliability. In this paper, an analysis and optimization of the hybrid energy system, which uses photovoltaic modules and wind turbines components connected to the grid, is presented. The system components are optimized using two objectives criteria: economic and environmental. The optimization has been performed based on the experimental data acquired for the whole year. Results showed the optimal configuration for the hybrid system based on economical objective, that presents the best compromise between the number of components and total efficiency. This achieved the lowest cost of energy but with relatively high CO2 emissions, while environmental objective results with lower CO2 emissions and higher cost of energy and presents the best compromise between the number of components and system net present cost. It has been shown that a hybrid system can be optimized in such a way that CO2 emission is maximally reduced and – separately – in terms of reducing the cost. However, the study shows that these two criteria cannot be optimized at the same time. Reducing the system cost increase CO2 emission and enhancing ecological effect makes the system cost larger. However, depends on strategies, a balance between different optimization criteria can be found. Regardless of the strategy used economic criteria – which also indirect takes environmental aspects as a cost of penalties – should be considered as a major criterion of optimization while the other objectives including environmental objectives are less important.

Go to article

Authors and Affiliations

Patryk Palej
Hassan Qusay
Sławosz Kleszcz
Robert Hanus
Marek Jaszczur
Download PDF Download RIS Download Bibtex

Abstract

Using renewable energy sources for electricity production is based on the processing of primary energy occurring in the form of sun, wind etc., into electrical energy. Economic viability using those sources in small power plants strongly depends on the support system, based mainly on financial instruments. Micro-installations, by using special instruments dedicated to the prosumer market may become more and more interesting not only in terms of environmental energy, but also financial independence. In the paper, the term hybrid power plant is understood to mean a production unit generating electricity or electricity and heat in the process of energy production, in which two or more renewable energy sources or energy sources other than renewable sources are used. The combination of the two energy sources is to their mutual complementarity, to ensure the continuity of the electricity supply. The ideal situation would be if both sources of energy included in the hybrid power plant continuously covered the total demand for energy consumers. Unfortunately, due to the short-term and long-term variability of weather conditions, such a balance is unattainable. The paper assesses the possibility of balancing the hybrid power plant in daily and monthly periods. Basic types of power plants and hybrid components and system support micro-installations were characterized. The support system is based particularly on a system of feed-in tariffs and the possibility of obtaining a preferential loan with a subsidy (redemption of part of the loan size). Then, an analysis of energy and economic efficiency for a standard set of hybrid micro-installations consisting of a wind turbine and photovoltaic panels with a total power of 5 kW, were presented. Fourteen variants of financing, economic efficiency compared with the use of the method of the simple payback period were assumed.

Go to article

Authors and Affiliations

Bartosz Soliński
Download PDF Download RIS Download Bibtex

Abstract

In the contemporary world, natural gas is one of the focuses of hybrid wars and is used as a tool of international economic and political pressure to gain appropriate benefits. The long-term pressure of Russia on Ukraine using a combination of military, political, economic, information and energy tools is one of the most striking cases of applying natural gas as a weapon in a hybrid war. Exploring the case of Ukraine, the authors confirmed the hypothesis about the change in the impact of the prices of natural gas on the performance of its industrial consumers during a hybrid war. The study covered three industrial sectors that are major consumers of natural gas – the metallurgy, chemical and pharmaceutical industries. The data of nine key companies of these industries for the period 2006–2019 were analyzed; this period was divided into two parts – before the hybrid war (2006–2013) and during it (2014–2019). The authors identified the heterogeneity of the influence of natural gas prices on the performance of different industrial enterprises. However, since the onset of the hybrid war, all of them have shown a reducing correlation of natural gas prices with all the analyzed performance indicators – operating profitability, material-output ratio, and labor productivity. The study managed to build reliable regression models that allow defining the prices of natural gas for the chemical industry and metallurgy, above which these industries in Ukraine become unprofitable. The defined critical levels have a practical implication since they can be tools for regulating natural gas prices for various industrial sectors.
Go to article

Authors and Affiliations

Anatoliy G. Goncharuk
1
ORCID: ORCID
Valeria Liashenko-Shcherbakova
1
ORCID: ORCID
Natalia Chaika
1
ORCID: ORCID

  1. Department of Management, International Humanitarian University, Ukraine
Download PDF Download RIS Download Bibtex

Abstract

Hybrid systems (HS) are roughly described as a set of discrete state transitions and continuous dynamics modeled by differential equations. Parametric HS may be constructed by having parameters on the differential equations, initial conditions, jump conditions, or a combination of the previous ones. In real applications, the best solution is obtained by a set of metrics functional over the set of solutions generated from a finite set of parameters. This paper examines the choice of parameters on delta-reachability bounded hybrid systems.We present an efficient model based on the tool pHL-MT to benchmark the HS solutions (based on dReach), and a non-parametric frontier analysis approach, relying on multidirectional efficiency analysis (MEA). Three numerical examples of epidemic models with variable growth infectivity are presented, namely: when the variable of infected individuals oscillates around some endemic (non-autonomous) equilibrium; when there is an asymptotically stable non-trivial attractor; and in the presence of bump functions.
Go to article

Bibliography

[1] M. Althoff and J.M. Dolan: Online verification of automated road vehicles using reachability analysis. IEEE Trans. on Robotics, 30(4), (2014), 903– 918, DOI: 10.1109/TRO.2014.2312453.
[2] P. Bogetoft and J.L. Hougaard: Efficiency evaluations based on potential (non-proportional) improvements. Journal of Productivity Analysis, 12(3), (1999), 233–247, DOI: 10.1023/A:1007848222681.
[3] X. Chen, E. Abraham and S. Sankaranarayanan: Flow*: An analyzer for non-linear hybrid systems. In: Proc. of CAV’13. LNCS, 8044, 258–263, Springer, 2013.
[4] E.M. Clarke and S. Gao: Model checking hybrid systems. In: Margaria T., Steffen B. (eds): Leveraging Applications of Formal Methods, Verification and Validation. Specialized Techniques and Applications. ISoLA 2014. Lecture Notes in Computer Science, 8803, 385–386, Springer, Berlin, Heidelberg, 2014.
[5] M. Franzle, C. Herde, S. Ratschan, T. Schubert and T. Teige: Efficient solving of large non-linear arithmetic constraint systems with complex Boolean structure. Journal on Satisfiability, Boolean Modeling and Computation, 1 (2007), 209–236, DOI: 10.3233/SAT190012.
[6] G. Frehse, C.L. Guernic, A. Donze, R. Ray, O. Lebeltel, R. Ripado, A. Girard, T. Dang and O. Maler: SpaceEx: Scalable verification of hybrid systems. In: Proc. of CAV’11. LNCS, 6806, 379–395, Springer, 2011.
[7] S. Gao: Computable analysis, decision procedures, and hybrid automata: A new framework for the formal verification of cyber-physical systems. Ph.D. thesis, Carnegie Mellon University, 2012.
[8] S. Gao, S. Kong and E.M. Clarke: dReal: An SMT solver for nonlinear theories over the reals. In: M.P. Bonacina (ed.) CADE 2013. LNCS (LNAI), 7898, 208–214, Springer, Heidelberg (2013). DOI: 10.1007/978-3-642-38574-2.
[9] HyCreate: A tool for overapproximating reachability of hybrid automata, http://stanleybak.com/projects/hycreate/hycreate.html.
[10] S. Kong, S. Gao, W. Chen and E. Clarke: dReach: δ-reachability analysis for hybrid systems. In Proc. International Conference on Tools and Algorithms for the Construction and Analysis of Systems, 2015. Available: http://link.springer.com/10.1007/978-3-662-46681-0.
[11] J. Lygeros, C. Tomlin and S. Sastry: Hybrid systems: modeling analysis and control. Electronic Research Laboratory, University of California, Berkeley, CA, Tech. Rep. UCB/ERL M, 2008.
[12] A. Platzer and J. Quesel: Keymaera: A hybrid theorem prover for hybrid systems (system description). In: Proc. of IJCAR’08.LNCS, 5195, 171–178, Springer, 2008.
[13] S. Ratschan and Z. She: Safety verification of hybrid systems by constraint propagation based abstraction refinement. In: Proc. of HSCC’05. LNCS, 3414, 573–589, Springer, 2005.
[14] E.M. Rocha: Oscillatory behaviour on a non-autonomous hybrid SIRmodel. In: M. Chaves and M. Martins (eds.), Molecular Logic and Computational Synthetic Biology. MLCSB 2018. Lecture Notes in Computer Science, 11415, Springer, Cham, 2019.
[15] L. Zhang, Z. She, S. Ratschan, H. Hermanns and E. Hahn: Safety verification for probabilistic hybrid systems. In: Proc. International Conference on Computer Aided Verification, (2010), 196–211.
Go to article

Authors and Affiliations

Eugénio Miguel Alexandre Rocha
1
Kelly Patricia Murillo
1

  1. Center for Research and Development in Mathematics and Applications, and Department of Mathematics, University of Aveiro, 3810-193 Aveiro, Portugal
Download PDF Download RIS Download Bibtex

Abstract

A method of creating production schedules regarding production lines with parallel machines is presented. The production line setup provides for intermediate buffers located between individual stages. The method mostly concerns situations when part of the production machines is unavailable for performance of operations and it becomes necessary to modify the original schedule, the consequence of which is the need to build a new schedule. The cost criterion was taken into account, as the schedule is created with the lowest possible costs regarding untimely completion of products (e.g. fines for delayed product completion). The proposed method is relaxing heuristics, thanks to which scheduling is performed in a relatively short time. This was confirmed by the presented results of computational experiments. These experiments were carried out for the rescheduling of machine parts production.

Go to article

Authors and Affiliations

Marek Magiera

This page uses 'cookies'. Learn more