306 research outputs found

    Modern logistic services as a challenge social logistics

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    The area of social logistics is a kind the present-day challenge of science, and especially the scientists, who take the labor to investigate and deal with the realities and challenges of global metropolises or agglomeration consisting of several or even a dozen cities in the region. How and what are the modern logistics services? Why do we have to treat them as social challenges of logistics? Among other things, such questions have been raised in this article. An attempt was made to identify, grade, or even groupings of modern logistics services, enrolling in the area of social logistics. They are described in detail examples of modern logistics services, which significantly influence the development and improvement of cities, and are based on solution and environmental solutions, conducive to the improvement of society.Obszar logistyki społecznej jest obecnie swoistym wyzwaniem dla nauki, a zwłaszcza naukowców, którzy podejmują pracę, aby zbadać i poradzić sobie z realiami i wyzwaniami globalnych metropolii lub aglomeracji złożonej z kilku lub nawet kilkunastu miast regionu. Jakie są nowoczesne usługi logistyczne i jak je rozpoznać? Dlaczego musimy traktować je jako wyzwania społeczne związane z logistyką? Między innymi takie kwestie zostały poruszone w niniejszym artykule. Podjęto próbę identyfikacji, klasyfikowania lub nawet grupowania nowoczesnych usług logistycznych wchodzących w zakres logistyki społecznej. Są szczegółowo opisane w przykładach nowoczesnych usług logistycznych, które w istotny sposób wpływają na rozwój i poprawę jakości miast, i są oparte na rozwiązaniach środowiskowych sprzyjających poprawie sytuacji społecznej

    Optimization of the Control System Parameters with Use of the New Simple Method of the Largest Lyapunov Exponent Estimation.

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    This text covers application of Largest Lapunov Exponent (LLE) as a criterion for control performance assessment (CPA) in a simulated control system. The main task is to find a simple and effective method to search for the best configuration of a controller in a control system. In this context, CPA criterion based on calculation of LLE by means of a new method [3] is compared to classical CPA criteria used in control engineering [1]. Introduction contains references to previous publications on Lyapunov stability. Later on, description of classical criteria for CPA along with formulae is presented. Significance of LLE in control systems is explained. Moreover, new efficient formula for calculation of LLE [3] is shown. In the second part simulation of the control system used for experiment is described. The next part contains results of the simulation in which typical criteria for CPA are compared with criterion based on value of LLE. In the last part results of the experiment are summed up and conclusions are drawn

    Hopf fibration and monopole connection over the contact quantum spheres

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    Noncommutative geometry of quantised contact spheres introduced by Omori, Maeda, Miyazaki and Yoshioka is studied. In particular it is proven that these spheres form a noncommutative Hopf fibration in the sense of Hopf-Galois extensions. The monopole (strong) connection is constructed, and projectors describing projective modules of all monopole charges are computed.Comment: 15 pages, LaTe

    Reputation as an Institution: An Attempt to Conceptualize and Measure Issues

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    The article deals with the problem of identifying institutions and measuring them. As an example, reputation was taken into consideration. The analysis leads to the conclusion that reputation could be treated as an institution and could be measured in the context of its impact on economic outcomes. This measurement can be carried out at three levels of detail: micro, meso and macro, of which the third is the least recognized in new institutional economics.The “Annales. Ethics in Economic Life” is affiliated and co-financed by the Faculty of Economics and Sociology of the University of Lodz

    REPUTATION AND REGULATIONS AS MARKET AND NON-MARKET MECHANISMS TO REDUCE BIFURCATED RISK

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    This paper presents a new concept of bifurcated risk and market and non-market mechanisms reducing the risk. Bifurcated risk occurs in different situations, and it is characterized by a disruption of the relationship between decision-making and the resulting consequences. The bifurcated risk is followed by a number of very negative consequences in the form of disturbances of institutional order and a decrease in the level of generalized trust which leads to an increase in transaction costs. Therefore, it is important to reduce this risk, by means of using various market and non-market mechanisms. This article presents two such mechanisms — reputation and regulations. Reputation reduces the bifurcated risk, because on one hand, it creates stimuli which discourage decision-makers from taking this risk, on the other hand helps to reduce information asymmetry, allowing entities susceptible to the effects of risks to avoid entering into relationships with entities which are the source of this risk. Regulations in turn play a greater role not in preventing the emergence of the bifurcated risk, but in mitigating the negative consequences associated with the risk. Reputation and regulations are complementary and as mechanisms to reduce the bifurcated risk can occur together

    How far is it to a sudden future singularity of pressure?

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    We discuss the constraints coming from current observations of type Ia supernovae on cosmological models which allow sudden future singularities of pressure (with the scale factor and the energy density regular). We show that such a sudden singularity may happen in the very near future (e.g. within ten million years) and its prediction at the present moment of cosmic evolution cannot be distinguished, with current observational data, from the prediction given by the standard quintessence scenario of future evolution. Fortunately, sudden future singularities are characterized by a momentary peak of infinite tidal forces only; there is no geodesic incompletness which means that the evolution of the universe may eventually be continued throughout until another ``more serious'' singularity such as Big-Crunch or Big-Rip.Comment: REVTEX4, 4 pages, 2 figures, references change

    WARTOŚCI ORGANIZACYJNE SPÓŁEK PUBLICZNYCH W POLSCE

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    Corporate values play an important role in managing a modern company. They are useful in creating strong corporate identity, image and reputation. The purpose of the research presented in this article was to observe corporate value systems in companies listed on the Warsaw Stock Exchange. Research was based on company documents analysis. The main results show that the company's size was the most important factor differentiating corporate value systems.Key words: corporate values, organizational identity, corporate identity, corporate culture, management by valuesJEL: M14Wartości korporacyjne odgrywają istotną rolę w zarządzaniu nowoczesnym przedsiębiorstwem. Są one ważne w budowaniu silnej tożsamości korporacyjnej, kreowaniu wizerunku i umacnianiu reputacji. Celem badań przedstawionych w artykule była identyfikacja i porównanie systemów wartości korporacyjnych występujących w spółkach notowanych na Giełdzie Papierów Wartościowych w Warszawie. Uzyskane wyniki wskazują, że najważniejszym czynnikiem różnicującym systemy wartości korporacyjnych jest wielkość przedsiębiorstwa.Słowa kluczowe: wartości organizacyjne, tożsamość organizacyjna, tożsamość przedsiębiorstwa, kultura organizacyjna, zarządzanie przez wartośc

    Kryzys a teoria gier, czyli na czym polega błąd

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    Wykorzystanie teorii gier w analizie przyczyn kryzysu, który rozpoczął się w 2007 r. w USA dowodzi, że zachowania instytucji finansowych nie były nieracjonalne. Były one wynikiem bodźców zachęcających do hazardu moralnego instytucje inwestujące środki prywatne, stosowanych przez państwa podczas wcześniejszych kryzysów. Zdaniem autora, obecna pomoc państw podtrzymuje tego typu oczekiwania, co grozi w przyszłości jeszcze większymi perturbacjami finansowymi
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