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  • 1
    Electronic Resource
    Electronic Resource
    Collective choice functions on non-convex problems (2000)
    Springer
    Economic theory 16 (2000), S. 457-463 
    Details
    ISSN: 1432-0479
    Keywords: Keywords and Phrases: Collective choice, Bargaining solutions, Monotonicity. ; JEL Classification Numbers:C71, C78.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Summary. Collective choice problems on sets in ${\frak R}_+^n$ arise naturally in economics. Such problems have been extensively studied both in the theory of revealed preferences (Peters and Wakker, 1991) and in axiomatic bargaining theory under the assumption of convexity. However, our knowledge of collective choice functions on non-convex problems is still patchy. In this paper I study the existence and characterisation of continuous choice functions on the domain $\Gamma$ of comprehensive problems. The main result completely characterises rational choice functions that are continuous and satisfy Weak Pareto Optimality: they form the class of Monotone Path Choice Functions on $\Gamma$ . I also show that any discontinuous rational and weakly Pareto optimal choice function must be non- anonymous.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001990050013
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  • 2
    Electronic Resource
    Electronic Resource
    A Theory of Vague Expected Utility (2004)
    Berkeley, Calif. : Berkeley Electronic Press (now: De Gruyter)
    Topics in theoretical economics 4.2004, 1, art10 
    Details
    ISSN: 1534-598X
    Source: Berkeley Electronic Press Academic Journals
    Topics: Economics
    Notes: We propose a new theory of choice between lotteries, which combines an 'economic' view of decision making - based on a rational, though incomplete, ordering - with a 'psychological' view - based on heuristics. This theory can explain observed violations of EU theory, namely all cyclical patterns of choice as well as violations of independence.
    Type of Medium: Electronic Resource
    URL: http://www.bepress.com/bejte/topics/vol4/iss1/art10
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  • 3
    Electronic Resource
    Electronic Resource
    A Vague Theory of Choice over Time (2006)
    Berkeley, Calif. : Berkeley Electronic Press (now: De Gruyter)
    Advances of theoretical economics 6.2006, 1, art6 
    Details
    ISSN: 1534-5963
    Source: Berkeley Electronic Press Academic Journals
    Topics: Economics
    Notes: We propose a novel approach to modelling time preferences, based on a cognitive shortcoming of human decision makers: the perception of future events becomes increasingly `blurred' as the events are pushed further in time. Our model explains behavioural `anomalies' such as preference reversal and cyclical choice.
    Type of Medium: Electronic Resource
    URL: http://www.bepress.com/bejte/advances/vol6/iss1/art6
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  • 4
    Electronic Resource
    Electronic Resource
    Changes in spectral properties of ageing and senescing maize and sunflower leaves (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 91 (1994), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The objective of this study was to determine the differences between maize (Zea mays L.) and sunflower (Helianthus annuus L.) in the pattern of leaf chlorophyll content and spectral properties occurring with leaf ageing and senescence.Chlorophyll accumulation and leaf spectral properties were determined in growing and senescing leaves of field-grown maize and sunflower hybrids. Measurements were taken at intervals of 3–4 days during the rapid stem elongation phase on leaf 11 for maize and leaf 17 for sunflower. Reflectance (R) and transmittance (T) spectra of adaxial surfaces of attached leaves were measured using a LI-COR 1800 hand-held spectroradiometer with an external integrating sphere, over the wavelength range from 400 to 100 nm. Absorptance (A) was computed as: A = 100-(R + T).In the growing leaf, chlorophyll content increased until full leaf expansion, while no changes in A and T were recorded. After full leaf expansion was reached, chlorophyll dropped from 514.3 to 328.0 μmol m−2 in maize and from 527.2 to 164.1 μmol m−2 in sunflower. Absorptance in the PAR region declined about 5% in maize and about 11% in sunflower and T increased about 1% in maize and 7% in sunflower. Within the PAR region, variations in A and T were recorded only in the green band (520–600 nm) for maize and in the green and red (630–690 nm) bands for sunflower. There were differences between maize and sunflower in the relative timing of the decrease in chlorophyll content and A in senescing leaves: maize retained chlorophyll longer than sunflower and A declined more slowly in maize as a result of the different length of leaf maturity and senescing stages.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1994.tb00441.x
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  • 5
    Electronic Resource
    Electronic Resource
    Nash Bargaining Theory, Nonconvex Problems and Social Welfare Orderings (2000)
    Springer
    Theory and decision 48 (2000), S. 351-358 
    Details
    ISSN: 1573-7187
    Keywords: Bargaining ; Nash solution ; Nonconvex problems ; Social Welfare Orderings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Sociology , Economics
    Notes: Abstract In this paper we deal with the extension of Nash bargaining theory to nonconvex problems. By focussing on the Social Welfare Ordering associated with a bargaining solution, we characterize the symmetric Nash Bargaining Solution (NBS). Moreover, we obtain a unified method of proof of recent characterization results for the asymmetric single-valued NBS and the symmetric multivalued NBS, as well as their extensions to different domains.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005278100070
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  • 6
    Electronic Resource
    Electronic Resource
    Nash bargaining theory when the number of alternatives can be finite (1998)
    Springer
    Social choice and welfare 15 (1998), S. 413-421 
    Details
    ISSN: 1432-217X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Sociology , Economics
    Notes: Abstract. Nash (1950) considered a domain of convex bargaining problems. We analyse domains including, or even consisting of, finite problems and provide various characterisations of the Nash Bargaining Solution (NBS). In particular, we extend Kaneko's (1980) results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003550050114
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  • 7
    Electronic Resource
    Electronic Resource
    Maximal symmetry and the Nash solution (2000)
    Springer
    Social choice and welfare 17 (2000), S. 45-53 
    Details
    ISSN: 1432-217X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Sociology , Economics
    Notes: Abstract. The Nash Bargaining Solution is characterised by using the new axiom of Maximal Symmetry in place of Nash's Independence of Irrelevant Alternatives and Symmetry. This axiom expresses the idea that a fair arbitrator should treat symmetric alternatives in the same way, subject to the feasibility constraint. An advantage of the proposed characterisations is that they are valid on a wide set of domains, in particular domains including, or consisting of, non-convex problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00007174
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  • 8
    Electronic Resource
    Electronic Resource
    An Ethical Interpretation of the Nash Choice Rule (2000)
    Springer
    Theory and decision 49 (2000), S. 151-157 
    Details
    ISSN: 1573-7187
    Keywords: Nash Bargaining ; Social Choice Rules ; Suppes-Sen Dominance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Sociology , Economics
    Notes: Abstract This paper provides an ethical intepretation of the Nash choice rule. In a setting in which (cardinal) utilities are interpersonally comparable, this procedure is characterised by an impartiality requirement and by the assumption that choices are not responsive to the agents' relative ability to convert resources into utility.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005234101607
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  • 9
    Electronic Resource
    Electronic Resource
    Experimental investigation of combined forced and free convection in horizontal and inclined tubes (1985)
    Springer
    Meccanica 20 (1985), S. 18-27 
    Details
    ISSN: 1572-9648
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Summary This investigation considers the effects of free convection on the laminar flow of water through a circular duct having essentially constant wall heat transfer rate per unit length of the duct and circumferentially uniform wall temperature. The effect of the Reynolds and Rayleigh number variations on heat transfer results has been analysed for both horizontal and inclined pipe. The experiment has covered the range of the inlet Reynolds number from 200 to 2300, and of the Rayleigh number from 6,000 to 70,000. The effect of pipe inclination has been investigated for slope angle values up to 60°, with laminar ascending flow.
    Notes: Sommario L'indagine é volta alla determinazione sperimentale dei coefficienti di scambio termico in regime di convezione mista per acqua in moto laminare entro un condotto a sezione circolare. Allo scopo di consentire il confronto dei risultati con le previsioni teoriche, l'esperienza è stata condotta cercando di approssimare le condizioni al contorno di flusso termico uniforme lungo l'asse del tubo e di temperatura uniforme in senso circonferenziale. La dipendenza dei coefficienti di scambio termico dai numeri di Reynolds e di Rayleigh è stata analizzata sia per condotto orizzontale che inclinato. La sperimentazione ha coperto il campo di valori compreso tra 200 e 2300 del numero di Reynolds all'ingresso, e tra 6000 e 70000 del numero di Rayleigh. L'influenza dell'inclinazione sullo scambio termico è stata esaminata, per moto laminare ascendente, tra 0 e 60° sull'orizzontale.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02337057
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  • 10
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    Facultative protein selenation regulates redox sensitivity, adipose tissue thermogenesis, and obesity (2020)
    National Academy of Sciences
    Details
    Publication Date: 2020-05-01
    Description: Oxidation of cysteine thiols by physiological reactive oxygen species (ROS) initiates thermogenesis in brown and beige adipose tissues. Cellular selenocysteines, where sulfur is replaced with selenium, exhibit enhanced reactivity with ROS. Despite their critical roles in physiology, methods for broad and direct detection of proteogenic selenocysteines are limited. Here we developed a mass spectrometric method to interrogate incorporation of selenium into proteins. Unexpectedly, this approach revealed facultative incorporation of selenium as selenocysteine or selenomethionine into proteins that lack canonical encoding for selenocysteine. Selenium was selectively incorporated into regulatory sites on key metabolic proteins, including as selenocysteine-replacing cysteine at position 253 in uncoupling protein 1 (UCP1). This facultative utilization of selenium was initiated by increasing cellular levels of organic, but not inorganic, forms of selenium. Remarkably, dietary selenium supplementation elevated facultative incorporation into UCP1, elevated energy expenditure through thermogenic adipose tissue, and protected against obesity. Together, these findings reveal the existence of facultative protein selenation, which correlates with impacts on thermogenic adipocyte function and presumably other biological processes as well.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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