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Number of results: 11
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Abstract

In the event of occupational accidents in mining, investors can calculate approximately how much loss will be incurred at the time of the accident. However, in halting mining as a result of occupational accidents or legislation, investors, will perhaps not care about how much of a loss to profits will arise due to the resulting downtime of mining operations. The reason for this is that there is no such halting in mining operation as yet and mining activity is continued. Avoiding halting mines due to occupational accidents and legislation would enable the prevention of unexpected costs resulting from these time losses. The aim of this study was to find out how much the loss of profits resulting from the downtime of mining enterprises due to the aforementioned reasons are in total, and how much the ratio of loss of profits to annual operating costs is on average on an annual basis. To determine the loss of profits and to minimize the accidents in enterprises, permanent supervisors, who are assigned in the enterprises where they are working, were given a survey through the SurveyMonkey program. Of the 235 permanent supervisors who filled out the survey on behalf of the mining enterprises, 58 answered all of the multiple-choice questions examined in the study. These questions were analyzed together according to different mineral groups and differences in mining operation methods. As a result of the analysis, it was determined that the annual loss of profits of mining enterprises resulting from the aforementioned periods of downtime, and the ratio of these values to the annual operating costs constitute a rather significant share. The aim of the article was to raise awareness to have mining companies appropriate more funds for occupational health and safety.
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Authors and Affiliations

Taşkın Deniz Yıldız
1
ORCID: ORCID

  1. Adana Alparslan Türkeş Science And Technology University, Department of Mining Engineering, Turkey
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Abstract

Occupational risk is closely related to work environment. For the same positions, but in different working conditions threats and level of risk can be different. For this also estimating the degree of damage hazard the largest possible should be adopted effects. However, when estimating probability occurrence of threats should include, among others: working conditions, events from the past, or possible employee behavior (in particular those that may be the cause of an accident at work). The source of the above information may be data from statistics or observations of work stations. The article presents the assessment of occupational risk at the position of the laser cutter operator, which was carried out using the Job Safety Analysis (JSA) method. According to this method, occupational risk is determined on the basis of two parameters, i.e.: consequences of C and probability of consequences P. In turn, the probability of consequences is the sum of three factors: frequency of hazard F, probability of event O and avoidability or damage limitation A.
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Authors and Affiliations

Michal Palega
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Abstract

Increased efficiency of production and improved quality have contributed to the development of ultrasonic technological applications, in which low frequency ultrasounds are generated to operate, accelerate as well as to facilitate technological processes. Technological ultrasonic devices (i.e. sources of ultrasonic noise in the work environment, e.g. ultrasonic washers, ultrasonic welding machines) have relatively high power and their nominal frequencies are in the range from 18 kHz to 40 kHz. In Poland, ultrasonic noise (defined as noise containing high audible and low ultrasonic frequencies from 10 kHz to 40 kHz) is included in the list of factors harmful to health in the work environment and therefore the admissible values of ultrasonic noise in the workplaces are established. The admissible values of ultrasonic noise and the new ultrasonic noise measurement method make it possible to perform the assessment of occupational risk related to ultrasonic noise. According to this method, the scope of the measurements includes the determination of the equivalent sound pressure levels in the 1/3 octave bands with the centre frequencies from 10 kHz to 40 kHz. This paper presents the description of both, i.e. the method for ultrasonic noise measurements and the method of the assessment of occupational risk related to ultrasonic noise. The examples of the results of the assessment of occupational risk related to exposure to ultrasonic noise are also discussed.
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Authors and Affiliations

Dariusz Pleban
1
Bożena Smagowska
1
Jan Radosz
1

  1. Central Institute for Labour Protection – National Research Institute, Warsaw, Poland
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Abstract

In the chaotic situation following the British invasion of southern Palestine at the end of 1917, military officials faced several countervailing pressures. In addition to ongoing military priorities (including international norms pertaining to military occupations, such as the law of the ‘status quo’), pressing humanitarian concerns, and even the personal religious sentiments of individual officers, the British occupation administration was forced to take into account international pressures and interventions resulting from the overlapping and conflicting promises made during the war (inter alia, Sykes‑Picot agreement, Husayn‑McMahon correspondence, Balfour Declaration, and President Wilson’s 14 Points). This paper focuses on the land policy‑making process as a case study with which to weigh the various factors pressing upon the military occupation as it evolved during its first three years. Land ownership was a huge concern: a properly functioning land registry was seen as key to the improvement of economic and social conditions in the largely agricultural economy, and British interventions were followed closely by all interested parties. The land has also been at the centre of the ensuing century‑long conflict between Arabs and Jews. Thus, a close examination of land policies (and especially the 1920 land ordinance) offers an extremely important window on both the rule of law in the aftermath of the war and our understanding of the current, unending conflict in the land.
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Authors and Affiliations

Martin Bunton
1
ORCID: ORCID

  1. University of Victoria
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Abstract

Electric shock accident is one of the main causes of fatal construction accidents. In this study, 101 electric shock accidents are analyzed to mine the potential associations of human errors. The modified Human Factors Analysis and Classification System (HFACS) is used to classify human factors of accident causes. Characteristics and potential causes of the accidents are identified by employing frequency analysis. Chi-square test and Apriori algorithm are utilized to explore the associations among the causes. Some significant association between any of two factors are shared. According to association rules using three criteria: support ( S), confidence ( C) and lift ( L), the two key paths are extracted based on the hierarchy of the HFACS. One is: organizational process loopholes → failed to correct problem → perceptual and decision errors ( S = 0•11, C = 0•423, L = 1•02), and the other is: organizational process loopholes!poor skill level ofworkers!routine violation ( S = 0•149, C = 0•789, L = 1•945). Managerial implications are proposed to prevent or reduce accidents based on interconnections of factors and key paths.
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Authors and Affiliations

Jue Li
1
ORCID: ORCID
Yuan Yu Wen
1
ORCID: ORCID

  1. School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha, Hunan, P.R.China
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Abstract

After an introduction (§1), all the Ugaritic terms for occupations, professions and social classes are set out in a classified list together with their cognates in other Semitic languages and their equivalents in Afro-Asiatic, Indo-European and other language groups (§2). There are also sections on composite expressions (§3) proper nouns (§§4–5) and both syllabic Ugaritic and Ugaritian Akkadian terms in these categories (§6). A table sets out the results (§7), with statistics for distribution (§8) and language (§9) and finally there are some conclusions (§10).

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Authors and Affiliations

Wilfred G.E. Watson
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Abstract

The aim of this study was to evaluate the hearing status of call centre operators in relation to their noise exposure. Conventional pure-tone audiometry and extended high-frequency audiometry were performed in 49 workers, aged 22–47 years (mean ± SD: 32.0 ± 6.0 years), working in call centre from 1.0 to 16.5 years (mean ± SD: 4.7 ± 2.9 years).

Questionnaire inquiry aimed at collecting personal data, the information on ommunication headset usage habits, self-assessment of hearing ability and identification of risk factors for noise-induced hearing loss were also carried out. Sound pressure levels generated by the communication headset were determined using the artificial ear technique specified in CSA Z107.56-13 (2013) standard. The background noise prevailing in offices was also measured according to PN-N-01307 (1994) and PN-EN ISO 9612 (2011).

Personal daily noise exposure levels in call centre operators varied from 66 to 86 dB (10–90th percentile). About half of the study subjects had normal hearing in the standard frequencies (from 250 to 8000 Hz) in both ears, while only 27.1% in the extended high-frequencies (9–16 kHz). Moreover, both high-frequency and speech-frequency hearing losses were observed in less than 10% of audiograms, while the extended high-frequency threshold shift was noted in 37.1% of analysed ears. The hearing threshold

levels of call centre operators in the frequency of 0.25–11.2 kHz were higher (worse) than the expected median values for equivalent (due to age and gender) highly screened population specified in ISO 7029 (2017). Furthermore, they were also higher than predicted for 500–4000 Hz according to ISO 1999 (2013) based on the results of noise exposure evaluation.

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Authors and Affiliations

Małgorzata Pawlaczyk-Łuszczyńska
Małgorzata Zamojska-Daniszewska
Kamil Zaborowski
Adam Dudarewicz
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Abstract

Despite the concerted efforts of the German administration in the occupied Łódź region, German-Polish mixed intimate relation-ships persisted. This article analyzes this issue in the context of the German civilian population, particularly ethnic Germans from Łódź, and Poles. During World War II, the occupying forces sought to prevent the formation and legalization of new intimate relationships between ethnic Germans and Poles. They introdu-ced more relaxed divorce laws to facilitate the dissolution of existing marriages. The Deutsche Volksliste (German Peoples’ List, DVL), established in the spring of 1940, played a pivotal role in this policy. Despite internal confusion and dilemmas, many Polish partners and children in ethnically mixed, legalized relationships were allowed limited German citizenship status as Volksdeutsche in the lowest categories. The process of inclusion and exclusion was deeply intertwined during the classification, driven by the necessity to avoid “ethnic confusion” and the potential displeasure of their German partners. The complexity of this ethnic categorization system and the policies governing ethnically mixed relationships became increasingly intri-cate with each passing year of the German occupation of Poland. However, these complexities did not disrupt the stability of the eth-nic hierarchy imposed by the occupiers in Łódź.
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Authors and Affiliations

Michał Turski
ORCID: ORCID
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Abstract

The motto of Zofia Nałkowska’s short-story collection Medaliony [Medalions] – “People doomed people to this fate” [Polish, “Ludzie ludziom zgotowali ten los”] – as obvious as it may apparently seem, has aroused various controversies. Henryk Grynberg believed that the only right formula, the one that would do justice to those persecuted, would have been “People doomed Jews to this fate”. Recently, the discussion was resumed in a book on the portrayal of the Holocaust in Medaliony – Zagłada w „Medalionach” Zofii Nałkowskiej, edited by Tomasz Żukowski: one of its essays (by Żukowski and Aránzazu Calderón Puerta) notices that endeavours to universalise the Holocaust is at least premature for the Poles tending to avoid facing the truth about their own contribution to annihilation of the Jews. While the threads addressed in these debates are important, they disregard the beliefs and the system of values Nałkowska adhered to. The Polish novelist adopted the view that man and the pleasure he takes in inflicting pain is the actual cause of evil. This inclination revealed itself not only during the war. This more general observation was rooted in her knowledge of life, relations between people, and daily cruelty. Supported by an ideology and furnished with technical resources, the war added a historical dimension to this bent. Moreover, Nałkowska was definitely not one among those who stayed silent in respect of the Jewish victims. Conversely, a few of the stories in Medaliony speak exactly about this problem, never trying to conceal anti-Semitic attitudes among Poles.

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Authors and Affiliations

Grażyna Borkowska
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Abstract

To evaluate the occupational safety of a high signal operator exposed to the electric field induced by contact wires with a frequency of 50 Hz and a voltage of 27.5 kV, this study established a model of a high signal operator working in the vicinity of singleand double-track railways. The electric field distribution in the operator’s body and his head were calculated and analyzed during the operation using the finite element method (FEM). The calculated results were compared with the international standard occupational exposure limits formulated by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) and action levels (ALs), exposure limit values (ELVs) in Directive 2013/35/EU (EU Directive). In the case of a single-track railway exposure, the maximum electric field strength in the worker’s body, in the scalp layer, and inside the brain are 227 mV/m, 2.76 kV/m, and 0.14 mV/m, respectively. For a double-track railway exposure, the maximum internal electric field strength of the operator is 310 mV/m, which is 37.85% of the occupational exposure basic restriction limit. The maximum electric field strength in the head layers is 3.42 kV/m, which is 34.2% of the occupational exposure reference level and 34.2% of the low ALs. The maximum electric field strength of the brain is 0.19 mV/m, which is 0.19% of the occupational basic restriction limit and 0.135% of the sensory effects ELVs. Results show that the electric field exposure of the high signal operator to contact wires in single- and double-track railways is lower than the occupational exposure limits provided by the ICNIRP and EU Directive standards and is thus regarded as safe forworkers.
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Authors and Affiliations

Chang-Qiong Yang
1
ORCID: ORCID
Mai Lu
1
ORCID: ORCID

  1. Lanzhou Jiaotong University, China
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Abstract

A description of the status of the art of experimental and theoretical investigations of local crystalline structures of tetrahedron ordered ternary and quaternary semiconducting alloys is presented. Experimental EXAFS data and FTIR analysis are summarized and analyzed using both the Rigid Network Cations theoretical model and the Strained-tetrahedra model. Internal preferences of ion pairs in ternary and quaternary alloys are discussed. Several ternary systems of different structures show ideal quasi-canonical Bernoulli distributions, while others are characterized by extreme preferences in which one, several or even all configurations are depressed or even lacking. The results demonstrate that the validity of the Bernoulli distribution is limited and not fulfilled in many systems. This article is an expanded version of the scientific reports presented at the International Conference on Semiconductor Nanostructures for Optoelectronics and Biosensors 2016 ICSeNOB2016, May 22–25, 2016, Rzeszow, Poland.

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Authors and Affiliations

A. Kisiel
B.V. Robouch
A. Marcelli

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