Search results

Filters

  • Journals
  • Authors
  • Contributor
  • Keywords
  • Date
  • Type

Search results

Number of results: 233
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

This article is a review of the book edited by Krzysztof Brzechczyn and Marek Nowak, On the Revolution. Pictures of the Radical Social Change, Poznań 2007.
Go to article

Authors and Affiliations

Lidia Godek
Download PDF Download RIS Download Bibtex

Abstract

History has shown different approaches to improving productivity the way of companies do business. Since the early 1900s, the development of different production systems has played an increasingly remarkable role in global manufacturing countries. It seems, that the growth of understanding has widened the ideology of production systems used up to current ones. This article examines the development path of business development. It evaluates the suitability of the key tools used to support change in a modern business model in a customer-driven project business environment.
Go to article

Authors and Affiliations

Jyri Vuorela
1
Mikael Ollikainen
1
Vesa Salminen
2
Juha Varis
1

  1. Energy Systems, LUT University, Finland
  2. Smart Research Center, Häme University of Applied Sciences, Finland
Keywords climate change
Download PDF Download RIS Download Bibtex

Abstract

We talk to the pioneering climate-change researcher Prof. Hans Joachim Schellnhuber about the role of decency in fighting climate change, and why excellent climate science requires freedom and trust.

Go to article

Authors and Affiliations

Hans Joachim Schellnhuber
Download PDF Download RIS Download Bibtex

Abstract

We study the evolution of income and wealth inequality in an economy undergoing endogenous structural change with imperfect labor mobility. Our economy features two sectors: services and manufacturing. With faster TFP growth in manufacturing, labor reallocates from manufacturing to services. This reallocation is slower due to labor mobility frictions, which in turn, raises relative wages in services. As a result, income inequality is higher. Moreover, we study the impact of structural change on wealth inequality. Its economic intuition is more ambiguous. On the one hand, increased income dispersion implies increased dispersion in the ability to accumulate wealth across individuals. On the other hand, younger workers who hold the least assets are the most mobile across sectors. Their incomes are improved, which boosts their savings, which works towards equalizing wealth distribution. The consequence of these changes can only be verified with a computational model. To this end, we construct an overlapping generations model with two sectors: manufacturing and services. Our model also features heterogeneous individuals. With our model, we are able to show how the structural change affected the evolution of income and wealth inequality in Poland as of 1990.
Go to article

Authors and Affiliations

Krzysztof Makarski
1
Joanna Tyrowicz
2

  1. SGH Warsaw School of Economics and FAME|GRAPE
  2. FAME|GRAPE, University of Regensburg, University of Warsaw, and IZA
Download PDF Download RIS Download Bibtex

Abstract

Prof. Paweł Rowiński, Vice-President of the Polish Academy of Sciences, talks about how climate change will affect Poland and what signs of it should we look for in our rivers.

Go to article

Authors and Affiliations

Paweł Rowiński

Abstract

The basic idea of the paper is to apply a multi-attribute notion of diversityproposed by Nehring and Puppe to technological changes appearing as aconsequence of innovations in Schumpeter’s sense of the term in the productionsphere of the economy modelled by the use of the Arrow and Debreu topologicalapparatus. The paper is inspired by the work of Malawski and Woerter whoused Stirling diversity concept to prove that innovative processes are the sourceof growing diversity in the Schumpeterian vision of economic development. Weshow that, under certain conditions, nondecreasing multi-attribute diversity inthe production sphere of the private ownership economy is a necessary andsufficient condition for the occurrence of innovation in the economy under study.

Go to article
Download PDF Download RIS Download Bibtex

Abstract

Arctic glaciers respond quickly to climatic conditions, which is why they play a special role as climate warming indicators. Studying them in the long term is the key to understanding future global environmental changes.

Go to article

Authors and Affiliations

Jacek Jania
Download PDF Download RIS Download Bibtex

Abstract

Prof. Mirosław Kofta, a psychologist from the University of Warsaw’s Faculty of Psychology and Institute for Social Studies, discusses political change in Poland, authoritarian personality, and civil society.

Go to article

Authors and Affiliations

Mirosław Kofta
Download PDF Download RIS Download Bibtex

Abstract

In the era of a global climate crisis, genetic pollution opens up new opportunities, but also carries the risk of a global catastrophe.
Go to article

Authors and Affiliations

Weronika B. Żukowska
1

  1. Department of Geneticsand Environmental InteractionsInstitute of Dendrology PAS in Kórnik
Download PDF Download RIS Download Bibtex

Abstract

Climate change is fueling migration to cities. How do we organize this process in a way that is supportive of intercultural integration?
Go to article

Authors and Affiliations

Marta Piechocka-Nowakowska
1

  1. Information Society Development Foundation in Warsaw
Download PDF Download RIS Download Bibtex

Abstract

It’s difficult to imagine a more curious continent: Antarctica, once very austere and inhospitable, is now becoming greener as a result of climate change.

Go to article

Authors and Affiliations

Katarzyna J. Chwedorzewska
Małgorzata Korczak-Abshire
Download PDF Download RIS Download Bibtex

Abstract

Any effective response to ecological crisis calls for collaboration of all parties involved.

Go to article

Authors and Affiliations

John Chryssavgis
Download PDF Download RIS Download Bibtex

Abstract

Prof. Tandong Yao and Prof. Fahu Chen describe our growing understanding of climate change impacts in the “Pan-Third Pole” region, discussing both coping strategies and research initiatives focusing on the region.

Go to article

Authors and Affiliations

Tandong Yao
Fahu Chen
Download PDF Download RIS Download Bibtex

Abstract

Air quality and climate change, as two crucial environmental emergencies confronting our societies, are still generally viewed as separate problems requiring different research and policy frameworks. However, they should rightfully be viewed as two sides of the same coin. What we truly need to seek, therefore, are “win-win” solutions.

Go to article

Authors and Affiliations

Maria Cristina Facchinii
Download PDF Download RIS Download Bibtex

Abstract

Uncertainties as to how the climate will change and how it will influence the necessities and trends of irrigation development lead to a number of serious questions to be answered in the near future. How irrigation and water systems will have to adapt to climate changes is a challenge that planners, designers and O&M services will have to cope with.

It is widely accepted that air temperature in Poland will increase of 2–4°C, however a total yearly precipitation will not vary yet its pattern during the year may change towards higher in winter and lower in summer. Evapotranspiration and crop water demand may rise due to both an increase in temperature and duration of crop growth cycles.

Three main factors are expected to exert an accelerating influence on the development of irrigation: increased frequency and intensity of droughts and long-lasting precipitation-free periods with the high insolation and high air temperatures resulting from climate change; the intensification of agricultural production (e.g. in horticulture, orchards, seed crops), being forced by both domestic and European free-market competition; the necessity of reaching high level of quality for the majority of agricultural products.

To mitigate negative effects of climate change and extreme events, appropriate adaptation methods and adaptation strategies should be developed and implemented in existing irrigation and water control systems. A number of technological and organisational steps should be taken to improve operation, management, administration and decision making processes.

Go to article

Authors and Affiliations

Leszek Łabędzki
Download PDF Download RIS Download Bibtex

Abstract

The pinnipeds were counted on the western shore of Admiralty Bay during 1994. It was found that the numbers of one breeding species Mirounga leonina is stable, the remaining four species show a variable pattern of occurrence. However, there is no evidence to detect any trend since 1988.

Go to article

Authors and Affiliations

Piotr Ciaputa
Download PDF Download RIS Download Bibtex

Abstract

The paper analyses the consequences of structural change in the presenceof non-stationary stochastic processes I(1) or I(2). The structural change mayconcern the deterministic structure (in particular, the trend and the constantterm) as well as the process generating the stochastic part. The focus of thepaper is on the case of a discrete change in a regime for which the momentof switch is known. A change in the deterministic part does not alter thecharacter of the cointegration relationships but its consequences for cotrendingand cobreaking are interesting. The consequences of a change in the stochasticpart are more complex, because then the stochastic process as well as thedeterministic structure of the VECM are modified. The restrictions are analysedfor both cases.

Go to article

Authors and Affiliations

Michał Majsterek
Emilia Gosińska
Download PDF Download RIS Download Bibtex

Abstract

Pewien buddyjski mnich wybierał się w długą i uciążliwą podróż. Jako towarzysza podroży wziął służącego, który znany był z krnąbrności i kłótliwości. Zapytany o powód tego wyboru oświadczył, że chce się ćwiczyć w cierpliwości i skromności. Dla mnie taką nauką były trzy lata prowadzenia międzynarodowego projektu CHIHE.

Go to article

Authors and Affiliations

Renata J. Romanowicz
Download PDF Download RIS Download Bibtex

Abstract

The paper presents a phenomenon of directional change in the case of a LQR controller applied to multivariable plants with amplitude and rate constraints imposed on the control vector, as well as the impact of the latter on control performance, with the indirect observation of the windup phenomenon effect via frequency of consecutive resat- urations. The interplay of directional change of the computed control vector with control performance has been thoroughly investigated, and it is a result of the presence of con- straints imposed on the applied control vector for different ratios of the number of control inputs to plant outputs. The impact of the directional change phenomenon on the control performance (and also on the windup phenomenon) has been defined, stating that performance deterioration is not tightly coupled with preservation of direction of the computed control vector. This conjecture has been supported by numerous simulation results for different types of plants with different LQR controller parameters.
Go to article

Authors and Affiliations

Dariusz Horla
Download PDF Download RIS Download Bibtex

Abstract

A simple resistance-based method was used to study the epoxy-carbon composite material. Measurement of changes of the resistance between contacts, located on the composite specimens, allows detecting the damage process in quasi-static and fatigue tests. The method can be useful to determine the margin of safety of composite elements.

Go to article

Authors and Affiliations

Paweł Pyrzanowski
Download PDF Download RIS Download Bibtex

Abstract

The aim of this study was to provide an estimation of climate variability in the Hornsund area in Southern Spitsbergen in the period 1976-2100. The climatic variables were obtained from the Polar-CORDEX initiative in the form of time series of daily air temperature and precipitation derived from four global circulation models (GCMs) following representative concentration pathways (RCP) RCP 4.5 and RCP 8.5 emission scenarios. In the first stage of the analysis, simulations for the reference period from 1979 to 2005 were compared with observations at the Polish Polar Station Hornsund from the same period of time. In the second step, climatic projections were derived and monthly and annual means/sums were analysed as climatic indices. Following the standard methods of trend analysis, the changes of these indices over three time periods - the reference period 1976-2005, the near-future period 2021-2050, and far-future period 2071-2100 - were examined. The projections of air temperature were consistent. All analysed climate models simulated an increase of air temperature with time. Analyses of changes at a monthly scale indicated that the largest increases were estimated for winter months (more than 11°C for the far future using the RCP 8.5 scenario). The analyses of monthly and annual sums of precipitation also indicated increasing tendencies for changes with time, with the differences between mean monthly sums of precipitation for the near future and the reference period similar for each months. In the case of changes between far future and reference periods, the highest increases were projected for the winter months.
Go to article

Authors and Affiliations

Marzena Osuch
Tomasz Wawrzyniak
Download PDF Download RIS Download Bibtex

Abstract

Climate change has been affecting plants over the last century and caused

changes in life history features such as the flowering time. Herbarium specimens provide

a snapshot of the past environmental conditions during their collection. The collection

date in a herbarium specimen is a good proxy to determine the flowering period (phenology).

In this study, phenological data from subarctic plant specimens collected over

100 years were gathered by using one of the largest herbarium databases in the World.

The collection dates of 7146 herbarium specimens were analyzed and significant shifts

in the phenology of subarctic plants were detected. In this study, most of the analyzed

142 species in a subarctic biogeographic region tended to flower earlier in the 1950–2018

period compared to the 1900–1949 as a possible result of the climate change. Flowering

time shifted from 8 to 26 days in some species. Changes in flowering time may

alter species interactions, community composition, and species distribution in a region.

Therefore, results of this study may shed light on the possible shifts in phenology and

plant responses under the climate change.

Go to article

Authors and Affiliations

Fazlioglu Fatih

This page uses 'cookies'. Learn more