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On a Certain Method of Rejecting games With Too Much Risk and Not Enough Expected gain

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Economics World 2018年第6期6卷 487-496页

作者： ewa Drabik Warsaw University of Technology WarsawPoland

Many important economic decisions involve an element of *** aversion is a concept in economics,game theory,finance,and psychology related to the behavior of consumers,players,and investors under *** aversion is an important component of a phenomenon that has been widely discussed in recent *** refers to a tendency to feel the pain of a loss more acutely than the pleasure of an equal-sized *** scientists have analyzed the problem of profitability in *** authors presented certain features which characterize“safe”games played *** and Tversky(1991)showed that the ratio of loss aversion to gain attraction should amount to 1:*** aim of this paper is to show an asymptotically efficient strategy which enables the risk-averse player to establish boundary variables of loss and gain at each stage of a repeated game.

关键词： asymptotically efficient adaptive allocation rule one-armed bandit problem risk aversion repeated games

Hamlet＇s Mobled Queen： The Displacement of the Figure in Contemporary Discourse, Communication, and Art

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Sociology Study 2017年第3期7卷 160-167页

作者： ewa Bobrowska Academy of Fine Arts in Warsaw Poland

The paper will focus on communication through the figures of discourse. The problem of the entanglement of the visual and the semantic is discussed extensively by lean-Francois Lyotard, in his notable Discourse, Figure, in relation to the perception and representation of space and the role and form of the sign. According to this philosopher, the figure dominates the communication process by deconstructing the text. Both the topography of the figure and art is the result of repression processes and the subsequent discharge of libidinal energy. Art in particular is a formalism of the death drive, according to Lyotard. The figure of ＂the mobled queen＂, the expression of a possible slip of the tongue in Hamlet, becomes a symbol of the distorted relationship of the visual, the semantic, the ethical, and the critical role of this in art and communication. In addition to Lyotard＇s model, the possible figures of globalization will be discussed in relation to Peter Sloterdik＇s globes. Spheres II.

关键词： Hamlet mobled queen the figure Lyotard contemporary philosophy contemporary art

The Latvian Road to the Euro

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Chinese Business Review 2014年第6期13卷 347-355页

作者： ewa Szymanik University of Economics Cracow Poland

The article presents the situation in Latvia ahead of the country＇s adoption of the euro by offering an analysis of the extent to which the country is prepared for the move and of general economic difficulties as well as indicating possible threats to its future development. The article talks about difficulties caused by the great unemployment connected with the specific economy of the country, political problems of the post-socialistic multinational country and steps done towards the fulfilling of all the convergence criteria. Its aim is to present the moments around the change of the currency which is done by the material＇s analysis because there are not enough statistical data for the mathematical analysis. It can be concluded that the adoption of the euro will probably be beneficial in the long run for Latvia＇s economy. The conclusions may be done by comparison with the situation of Estonia and its foreign trade with Poland which is shown in the article because there are a lot of similarities between the two Baltic countries.

关键词： Latvia euro foreign trade Poland

Stock Indices and New Technologies

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Economics World 2021年第2期9卷 76-86页

作者： ewa Drabik Warsaw University of Technology WarsawPoland

Stock indices were created to accurately reflect changes in the prices of stock exchange securities included in *** are divided into price-weighted and value-weighted *** price-weighted indices,each security has the same impact on the index,which is the arithmetic mean of the stock values of the companies it comprises.A value-weighted index accounts for changes in the value of *** choosing the right composition of share packages,one can change the impact of a given security on the *** dynamics also change the composition of the index by removing securities and replacing them with *** impact on the index grows as the price of a given security ***,index values have been strongly influenced by new technology companies,which have greatly appreciated during the SARS-CoV-2 *** aim of this work is to show the changes in two indices in particular:US NASDAQ Composite,and the new competitive SSE STAR index,an index from the Shanghai Stock Exchange.

关键词： stock indices capital markets stock exchange NASDAQ Composite SSE STAR Index

On Positional games With Perfect Information and Their Applications

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Economics World 2014年第3期2卷 180-187页

作者： ewa Drabik Warsaw University of Technology Warsaw Poland

The game theory was firstly used for description of economic phenomena and social interaction. But there are certain type of perfect information games （PI-games）, the so-called positional game or Banach-Mazur games, which so far have not been applied in economy. The perfect information positional game is defined as the game during which at any time the choice is made by one of the players who is acquainted with the previous decision of his opponent. The game is run on a sequential basis. The aim of this paper is to discuss selected Banach-Mazur games and to present some applications of positional game. This paper also shows new theoretical example of a determined PI-game, based by theoretical overview. All considerations are pure theoretical and based by logical deduction.

关键词： Banach-Mazur games a winning strategy determinacy of Pl-game axiom of choice rule of auction finite and infinite games of perfect information the Dutch auction chess

Facile synthesis of accordion-like porous carbon from waste PET bottles-based MIL-53(Al)and its application for high-performance Zn-ion capacitor

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green Energy & Environment 2024年第7期9卷 1138-1150页

作者： Jiaxin Li Shuai Zhang Yumeng Hua Yichao Lin Xin Wen ewa Mijowska Tao Tang Xuecheng Chen Rodney S.Ruoff Faculty of Chemical Technology and Engineering West Pomeranian University of TechnologyPiastow Ave.4271-065SzczecinPoland Key State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China School of Safety Engineering China University of Mining and TechnologyXuzhou221116China Institute of Advanced Electrical Materials Qingdao University of Science and TechnologyQingdao266042China Institute for Basic Science Center for Multiple Dimensional Carbon Materials Ulsan44919Republic of Korea Department of Chemistry Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea Department of Materials Science and Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan44919Republic of Korea

It is of great scientific and economic value to recycle waste poly(ethylene terephthalate)(PET)into high-value PET-based metal organic frameworks(MOFs)and further convert it into porous carbon for green energy storage *** the present study,a facile and costeffective hydrothermal process was developed to direct recycle waste PET bottles into MIL-53(Al)with a 100% conversation,then the MOFderived porous carbon was assembled into electrodes for high-performance *** results indicated that the as-synthesized carbon exhibited high SSA of 1712 m^(2)g^(-1)and unique accordion-like structure with hierarchical *** to these advantageous characters,the assembled three-electrode supercapacitor displayed high specific capacitances of 391 F g^(-1)at the current density of 0.5 A g^(-1)and good rate capability of 73.6% capacitance retention at 20 A g^(-1)in 6 mol L^(-1)KOH ***,the assembled zinc ion capacitor still revealed outstanding capacitance of 335 F g^(-1)at 0.1 A g^(-1),excellent cycling stability of 92.2% capacitance retention after 10000 cycles and ultra-high energy density of 150.3 Wh kg^(-1)at power density of 90 W kg^(-1)in 3 mol L^(-1)ZnSO_(4)*** is believed that the current work provides a facile and effective strategy to recycle PET waste into high-valuable MOF,and further expands the applications of MOF-derived carbons for high-performance energy storage devices,so it is conducive to both pollution alleviation and sustainable economic development.

关键词： PET Recycling Porous carbon Supercapacitor Energy storage

Brain gABA and glutamate levels in workers of two ant species （Hymenoptera： Formicidae）： Interspecific differences and effects of queen presence/absence

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Insect Science 2014年第5期21卷 647-658页

作者： Andrzej Wnuk Wojciech Kostowski Julita Korczynska Anna Szczuka Beata Symonowicz Przemyslaw Bienkowski Pawel Mierzejewski ewa Joanna godzinska Laboratory of Ethology Department of Neurophysiology Nencki Institute of Experimental Biology PAS Warsaw Department of Pharmacology and Physiology of the Nervous System Institute of Psychiatry and Neurology Warsaw Poland

Presence of amino acid neurotransmitters gamma-aminobutyric acid （gABA） and glutamate （glu） in ant brains was reported in very few studies. To learn more about factors influencing gABA and glu levels in ant brains, we applied high-performance liquid chromatography to measure levels of these compounds in single brains of workers of 2 ant species, Myrmica ruginodis （subfamily Myrmicinae） and Formica polyctena （subfamily Formicinae） taken from queenright/queenless colony fragments and tested in dyadic aggression tests consisting of an encounter with a nestrnate, an alien conspecific or a small cricket. Brain glutamate levels were higher than those of gABA in both tested species. Brain gABA levels （in μmol/brain） and gABA ： glu ratio were higher in M. ruginodis （a submissive species） than in E polyctena （a dominant, aggressive species） in spite of smaller brain weight of M. ruginodis. Brain glutamate levels （in μmol/brain） did not differ between the tested species, which implies that glutamate concentration （in μmol/mg of brain tissue） was higher in M. ruginodis. Queen absence was associated with increased worker brain gABA levels in E polyctena, but not in M. ruginodis. No significant effects of opponent type were discovered. As gABA agonists enhance friendly social behavior in rodents, we hypothesize that elevated brain gABA levels of orphaned workers of *** facilitate the adoption of a new queen. This is the first report providing information on gABA and glutamate levels in single ant brains and documenting the effects of queen presence/absence on brain levels of amino acid neurotransmitters in workers of social Hymenoptera.

关键词： Formica polyctena gABA glutamate interspecific differences Myrmica ruginodis queen

Simultaneous liver mucinous cystic and intraductal papillary mucinous neoplasms of the bile duct:A case report

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World Journal of gastroenterology 2014年第14期20卷 4102-4105页

作者： Agnieszka Budzynska Marek Hartleb ewa Nowakowska-Dulawa Robert Krol Piotr Remiszewski Michal Mazurkiewicz Department of gastroenterology and Hepatology Medical University of Silesia Department of general Vascular and Transplant SurgeryMedical University of Silesia Department of general Transplant and Liver SurgeryMedical University of Warsaw Department of Pathological Anatomy Medical University of Warsaw

Cystic hepatic neoplasms are rare tumors,and are classified into two separate entities:mucinous cystic neoplasms(MCNs)and intraductal papillary mucinous neoplasms of the bile duct(IPMN-B).We report the case of a 56-year-old woman who presented with abdominal pain and jaundice due to the presence of a large hepatic multilocular cystic tumor associated with an intraductal *** hepatectomy with resection of extrahepatic bile ducts demonstrated an intrahepatic MCN and an intraductal *** is the first report of the simultaneous occurrence of these two histologically distinct entities in the liver.

关键词： Liver Mucinous cystic neoplasm Intraductal papillary mucinous neoplasm of the bile duct

Improved cryopreservation of human hepatocytes using a new xeno free cryoprotectant solution

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World Journal of Hepatology 2012年第5期4卷 176-183页

作者： Mohammed Saliem Frida Holm Rosita Bergstrm Tengzelius Carl Jorns Lisa-Mari Nilsson Bo-gran Ericzon ewa Ellis Outi Hovatta Division of Obstetrics and gynecology Department of Clinical ScienceIntervention and TechnologyKarolinska Institute141 86 StockholmSweden Division of Transplantation Surgery Department of Clinical ScienceIntervention and TechnologyKarolinska Institute141 86 StockholmSweden Division of Pediatrics Department of Clinical ScienceIntervention and TechnologyKarolinska Institute141 86 StockholmSweden

AIM:To optimize a xeno-free cryopreservation protocol for primary human ***:The demand for cryopreserved hepatocytes is increasing for both clinical and research *** several hepatocyte cryopreservation protocols being available,improvements are urgently *** first compared controlled rate freezing to polystyrene box freezing and did not find any significant change between the *** the polystyrene box freezing,we compared two xeno-free freezing solutions for freezing of primary human hepatocytes:a new medium(STEM-CELLBANKER,CB),which contains dimethylsulphoxide(DMSO) and anhydrous dextrose,both permeating and non-permeating cryoprotectants,and the frequently used DMSO-University of Wisconsin(DMSOUW) *** viability of the hepatocytes was assessed by the trypan blue exclusion method as well as a calcein-esterase based live-dead assay before and after *** function of the hepatocytes was evaluated before and after cryopreservation by assessing enzymatic activity of 6 major cytochrome P450 isoforms(CYPs):CYP1A2,CYP2C9,CYP2C19,CYP2D6,CYP3A4 and ***:The new cryoprotectant combination preserved hepatocyte viability significantly better than the standard DMSO-UW protocol(P gnificant difference in viability estimation between both the trypan blue(TB) and the Live-Dead Assay *** was a correlation between viability of fresh hepatocytes and the difference in cell viability between CB and DMSO protocols(r 2 = 0.69) using the TB ***,due to high within-group variability in the activities of the major CYPs,any statistical between-group differences were *** of human hepatocytes using the cryoprotectant combination was a simple and xeno-free procedure yielding better hepatocyte ***,it may be a better alternative to the standard DMSO-UW *** CYP activities did not seem to be a relevant way to compare hepatocyte function

关键词： Human hepatocytes Viability Cytochrome P540 Dimethylsulphoxide Cryoprotectant Cryopreservation