The Evaluation of Employment Policies for Older Adults in the Czech Republic, Poland, and Slovakia

Adults aged 65 and above comprise the fastest growing sector of the world’s population. In the context of increasing numbers of older adults, employment policies have become a prominent issue. Governments recognize the importance of increasing participation in working age population and providing them with equal workplace opportunities. Yet, it appears that policies raising employment rates of older adults have become a slogan that governments use for election purposes, but the reality is different. In the groundbreaking report “Working Better with Age: Poland‘ prepared by the Organization for Economic Cooperation and Development, Poland, the Czech Republic, and Slovakia belong to a group of countries where the increase in the employment rate of older adults is well below the OECD average. The objective of our critical review is to evaluate current employment policies for older adults, including but not limited to healthy work conditions, age management strategies, employment services for older workers, and strategies implemented to prevent the age discrimination, in these three countries. This article also discusses the reasons for the reduction in the employment of older adults, the current barriers in employing older adults that require governments’ attention, and suggests solutions for creating an age-friendly labor market that can effectively make use of older adults’ competencies. Employment rates for people of different ages are significantly affected by government policies with regard to higher education, pensions, and retirement age

Theoretical investigaion of the performance of alternative aviation fuels in an aero-enginve combustion chamber

When considering alternative fuels for aviation, factors such as the overall efficiency of the combustion process and the levels of emissions emitted to the atmosphere, need to be critically evaluated. The physical and chemical properties of a fuel influence the combustion efficiency and emissions and therefore need to be considered. The energy content of a biofuel, which is influenced negatively by the presence of oxygen in the molecular structure (i.e. oxygenated chemical compounds), is relatively low when compared with that of conventional jet fuel. This means that the overall efficiency of the process will be different. In this paper two possible scenarios have been investigated in order to assess the potential to directly replace conventional jet fuel with Methyl Buthanoate - MB (a short chain FAME representing biofuel) and a synthetic jet fuel (FT fuel) using Computational Fluid Dynamics (CFD) modelling in a typical Modern Air-Spray Combustor (MAC). In addition the impact of fuel blending on the combustion performance has been investigated. Computational Fluid Dynamics (CFD) has been verified and validated over past decades to be a powerful design tool in industries where experimental work can be costly, hazardous and time consuming, to support the design and development process. With recent developments in processor speeds and solver improvements, CFD has been successfully validated and used as a tool for optimizing combustor technology. Combustion of each fuel is calculated using a mixture fraction/pdf approach and the turbulence-chemistry interaction has been modelled using the Laminar Flamelet approach. Detailed chemical reaction mechanisms, developed and validated recently by the authors for aviation fuel including kerosene, synthetic fuel and bio-aviation fuel have been employed in the CFD modelling. A detailed comparison of kerosene with alternative fuel performance has been made.

Assessment of the performance of alternative aviation fuel in a modern air-spray combustor (MAC)

Recent concerns over energy security and environmental considerations have highlighted the importance of finding alternative aviation fuels. It is expected that coal and biomass derived fuels will fulfil a substantial part of these energy requirements. However, because of the physical and chemical difference in the composition of these fuels, there are potential problems associated with the efficiency and the emissions of the combustion process. Over the past 25 years Computational Fluid Dynamics (CFD) has become increasingly popular with the gas turbine industry as a design tool for establishing and optimising key parameters of systems prior to starting expensive trials. In this paper the performance of a typical aviation fuel, kerosene, an alternative aviation fuel, biofuel and a blend have been examined using CFD modelling. A good knowledge of the kinetics of the reaction of bio aviation fuels at both high and low temperature is necessary to perform reliable simulations of ignition, combustion and emissions in aero-engine. A novel detailed reaction mechanism was used to represent aviation fuel oxidation mechanism. The fuel combustion is calculated using a 3D commercial solver using a mixture fraction/pdf approach. Firstly, the study demonstrates that CFD predictions compare favourably with experimental data obtained by QinetiQ for a Modern Airspray Combustor (MAC) when used with traditional jet fuel (kerosene). Furthermore, the 3D CFD model has been refined to use the laminar flamelet model (LFM) approach that incorporates recently developed chemical reaction mechanisms for the bio-aviation fuel. This has enabled predictions for the bio-aviation fuel to be made. The impact of using the blended fuel has been shown to be very similar in performance to that of the 100% kerosene, confirming that aircraft running on 20% blended fuel should have no significant reduction in performance. It was also found that for the given operating conditions there is a significant reduction in performance when 100% biofuel if used. Additionally, interesting predictions were obtained, related to NOx emissions for the blend and 100% biofuel

Social housing in the light of the ageing Polish society

W artykule omówiono konsekwencje zachodzących zmian demograficznych wpływających na potrzeby mieszkaniowe osób starych. Prognozy demograficzne wskazują, że w najbliższych dekadach znacznie wzrośnie liczba osób starszych, szczególnie z kategorii tzw. starości, czyli w wieku 85 i więcej lat. Z uwagi na ograniczoną liczbę miejsc w domach pomocy społecznej, mieszkaniach chronionych i wspomaganych należy poszukiwać nowych rozwiązań w celu zapewnienia lokalu mieszkalnego seniorom. Potrzeby osób starszych w zakresie mieszkalnictwa są zróżnicowane z uwagi na sytuację ekonomiczną, społeczną, psychologiczną, biologiczną, a w szczególności ze względu na stopień samodzielności. Doniosłość kwestii starzenia się społeczeństwa i znaczenia mieszkania w życiu każdego człowieka sprawia, że autorzy uznają, że należy poszukiwać nowych rozwiązań w tym zakresie. Społeczne budownictwo mieszkaniowe jako specyficzny segment budownictwa mieszkaniowego może stanowić potencjał, który można wykorzystać do rozwiązania narastających problemów. Biorąc pod uwagę niższe koszty na poziomie inwestycji i użytkowania mieszkań z tego sektora, mogą one uzupełnić system budownictwa senioralnego i jednocześnie zmniejszać deficyt ilościowy i jakościowy mieszkań senioralnych. Część informacji zawartych w artykule pochodzi z badań realizowanych przez dr Zuzannę Rataj w ramach projektu pt. „Społeczne budownictwo mieszkaniowe i jego rola w zaspokajaniu potrzeb mieszkaniowych niezamożnych gospodarstw domowych w Polsce” finansowanego ze środków Narodowego Centrum Nauki (2014/13/N/HS4/02100).The article discuss the consequences of demographic changes which have an influence on housing needs of elderly people. Population forecasts predict that in the nearest decades the number of senior citizens will rise, particularly in the category of those aged 85+. Due to the limited number of places in sheltered flats, residential homes or old people’s homes, new solutions must be found to provide new housing unit for seniors. The needs of elderly  people in the housing industry are diversified and depend on their social, psychological, biological or economic situation, and in particular on the degree of their independence or possibility of selfreliance. The importance of the place of living in the life of every man requires solving the problem. Social housing being a specific section of the housing market may have a great potential in solving housing problems for the elderly, especially when the lower costs of investments in the construction and maintenance of flats from this sector is taken into account

The Human-Robot Interaction Operating System

In order for humans and robots to work effectively together, they need to be able to converse about abilities, goals and achievements. Thus, we are developing an interaction infrastructure called the "Human-Robot Interaction Operating System" (HRI/OS). The HRI/OS provides a structured software framework for building human-robot teams, supports a variety of user interfaces, enables humans and robots to engage in task-oriented dialogue, and facilitates integration of robots through an extensible API