The high precision attained by cosmological data in the last few years has increased the interest in exact solutions. Analytic expressions for solutions in the Standard Model are presented here for all combinations of Λ = 0, Λ ≠ 0, κ = 0, and κ ≠ 0, in the presence and absence of radiation and nonrelativistic matter. The most complete case (here called the ΛγCDM Model) has Λ ≠ 0, κ ≠ 0, and supposes the presence of radiation and dust. (...) It exhibits clearly the recent onset of acceleration. The treatment includes particular models of interest such as the ΛCDM Model (which includes the cosmological constant plus cold dark matter as source constituents). (shrink)

BLWith new text and full apparatus criticus The Eudemian Ethics was one of two ethical treatises which Aristotle wrote on the subject of ethica or `matters to do with character'. Although the two works cover much the same ground, the Nicomachean Ethics is better known; the poor manuscript tradition of the Eudemian Ethics has made correct translation and interpretation of the text extremely difficult. The subject of the work is the choice of a certain means of conduct, made by a (...) `man of practical wisdom', between two extremes of behaviour: asceticism and yielding to uncontrolled impulses. Aristotle also stresses the notion of moral intention and the importance of virtue of character. This new Oxford Classical Text of the Eudemian Ethics is the result of many years of work. After Sir David Ross's death, his original text was substantially reworked and revised by his friend and colleague R. R. Walzer, who was aided in the revision by his former pupil Mrs Jean Mingay, who continued his work after his death in 1974. Mrs Mingay was fortunate in being able to make use of previously unpublished contributions from D. J. Allan after his death in the late seventies, and more recently has been helped in her work by the suggestions of Professor D. A. Russell, David Robinson, and Christopher Rowe. (shrink)

Among psychologists and vision scientists,binocular rivalry has enjoyed sustainedinterest for decades dating back to the 19thcentury. In recent years, however, rivalry''saudience has expanded to includeneuroscientists who envision rivalry as a tool for exploring the neural concomitants ofconscious visual awareness and perceptualorganization. For rivalry''s potential to berealized, workers using this tool need toknow details of this fascinating phenomenon,and providing those details is the purpose ofthis article. After placing rivalry in ahistorical context, I summarize major findingsconcerning the spatial characteristics and thetemporal dynamics (...) of rivalry, discuss two majortheoretical accounts of rivalry ( eye vs stimulus rivalry) and speculate on possibleneural concomitants of binocular rivalry. (shrink)

Almost all ethical guidelines and legislative policies concerning biomedical research involving human subjects contain provisions about relevance of research for the participating populations, informed consent, adequate care for research induced injuries and several other safeguards but the poor continue to suffer. Globalization has further aggravated poor people’s vulnerability by exposing them to international markets. Since the developing countries are abode of higher population of the poor they have become the unholy mines of this human ore for researchers. In this paper (...) I examine various dimensions of poverty and analyze the international ethical responses in the area of biomedical research involving human subjects in order to determine their adequacy to protect the poor against exploitation and misuse and conclude that in view of the poor’s inherent and extreme vulnerability and the failure of ethical pronouncements to protect them from misuse and exploitation, they should be excluded from being enrolled as research subjects. (shrink)

This invaluable resource is the first one-volume, in-depth, comprehensive history of modern science ever published.

Despite stringent and fine tuned laws most jurisdictions are not able to curb organ trafficking. Nor are they able to provide organs to the needy. There are reports of the kidnapping and murder of children and adults to “harvest” their organs. Millions of people are suffering, not because the organs are not available but because “morality” does not allow them to have access to the organs. Arguments against organ sale are grounded in two broad considerations: sale is contrary to human (...) dignity, and sale violates equity. Both these objections are examined in this article and it is concluded that they reflect a state of moral paternalism rather than pragmatism. It is argued that a live human body constitutes a vital source of supply of organs and tissues and that the possibilities of its optimum utilisation should be explored. Commercialisation should be curbed not by depriving a needy person of his genuine requirements but by making the enforcement agencies efficient. (shrink)

What is xenophobia? Why is xenophobia immoral? How is xenophobia's conceptual and moral meaning diminished? Investigations of these questions would invigorate xenophobia as a topic in public morality and discourage the public's acquiescing to xenophobia's new prominence. This paper focuses on the third question, the diminishment of xenophobia. In the first section, I outline a general conception of xenophobia. In the second, I explain how theories of membership in liberal democratic societies relegate xenophobia to a minor moral concern. And, in (...) the third, that the conflation of xenophobia with racism disadvantages the former. How liberal Democratic nations imagine membership and how those nations imagine racism shelters xenophobia. (shrink)

Social policies are used to regulate how members of a society interact and share resources. If we expand our sense of community to include the ecosystem of which we are a part, we begin to develop an ethical obligation to this broader community. This ethic recognizes that the environment has intrinsic value, and each of us, as members of society, are ethically bound to preserve its sustainability. In assessing the environmental risks of new agricultural methods and technologies, society should not (...) freely trade economic gains for ecological damage, but rather seek practices that are compatible with ecosystem health. This approach is used to evaluate the environmental risks associated with genetically engineered insect-resistant trees. The use of insect-resistant trees is a biologically based pest control strategy that has several advantages over pesticide use. However, the use of genetically engineered trees presents particular ecological concerns because the trees are long lived and often are not highly domesticated. The main environmental concerns reviewed include: (1) adaptation of pests to the trees, leading to a non-sustainable agricultural practice, (2) transgenic trees producing environmental toxins, (3) insect resistance enhancing the invasiveness of the tree, causing it to become weedy or invade wild habitats, and (4) transfer of the transgene to wild or feral relatives of the tree, possibly increasing the invasiveness of weeds or wild plants. Some methods are available to offset these risks; however, the environmental risks associated with this technology have been poorly researched and need to be more clearly identified so that when we evaluate the risks, it is based on the best information obtainable. To fulfil an ethical obligation to the environment, public policies and government regulations are needed to preserve the sustainability of both the environment and the future of our production systems. A better understanding of both the ecological issues and of genetic engineering in general are needed on the part of citizens and policy makers alike to ensure that sound environmental decisions are made. Otherwise, the environmental benefits of this technology, mainly decreasing the use of more toxic pesticides in tree crops and forests, will either be lost or traded for other environmental hazards. (shrink)

Sexual reproduction is a composite, not a singular, phenomenon and as such can be subdivided into a number of componentsi.e. fusion, recombination, fission, and the male-female phenomenon. These components can evolve independently, though any evolutionary change in one component is likely to influence the future evolution of the other components. The ambiguity that surrounds the term ‘sex’ due to a failure to recognise the composite nature of sexual reproduction has led to considerable confusion in past discussions of the evolution of (...) the phenomenon. This paper considers the possible chronological interaction of the components of sexual reproduction both with each other and with the sequence of selective pressures that seem likely to have acted. This chronological approach is used to consider: the origin of sexual reproduction; the evolution of sexual reproduction in the common ancestor of the procaryotes and eucaryotes; the modification of the ancestral system in the procaryote line following the procaryote-eucaryote dichotomy; and the modification of the ancestral system in the eucaryote line up to the origin of the male-female phenomenon.It is suggested that the fusion and recombination of the first living organisms were chronological continuations of the fusion and recombination of complex organic molecules that led up to the origin of life. The evolution of the third major component of sexual reproductioni.e. fission , by definition coincided with the origin of life. Initial selection on the components of sexual reproduction are likely to have been related to the optimum manifestations of size, complexity, diversity, multiplication, and distribution. Resultant early evolutionary trends are likely to have been: selective fusion between more-similar organisms; increase in number of fissions per fusion; and less recombination.The procaryote-eucaryote dichotomy is argued to have evolved in response to the increasing cellular problems of packing and replicating an increasing amount of hereditary material. The evolution of a single circular hereditary organelle in the procaryote line is argued to have led to the loss of total fusion and the specialisation of individuals into either donors or recipients. The donor-recipient phenomenon of procaryotes is directly analogous to the male-female phenomenon of eucaryotes and leads to parallel evolution due to sexual selection in both groups. In the eucaryote line the ancestral mechanism of sexual reproduction is argued to have persisted through, but to have been greatly modified by, the evolution of complex machinery for the handling of multiple hereditary organelles at cell division and reduction division. The evolutionary modification of the ancestral system of sexual reproduction is suggested to have led in eucaryotes to the evolution of: the species phenomenon; allelic recombination; and the male-female phenomenon. (shrink)

The article devoted to historiographical analysis of the works of Russian researchers, containing information about the activities of the central party organ that functioned on the territory of Bashkortostan during the rule of N. S. Khrushchev. The new soviet leader was responsible for several relatively liberal reforms in areas of domestic policy. This period of time was characterized by complex socio-political conditions caused by the transition of the internal life of Soviet Russia from Stalin’s version of authoritarianism to Khrushchev’s more (...) liberal policy. Personnel reshuffles in the highest echelon of the central party, which functioned on the territory of Bashkortostan during the ‘thaw‘ of Khrushchev, undoubtedly left their imprint on carrying out the policy in various areas of life in the multinational region. The first secretaries of the Bashkir regional committee of the CPSU were the conductors of the ideas of the leader of the USSR. Khrushchev’s ‘thaw‘ caused unprecedented economic, cultural and social transformations in the life of Soviet Russia and in particular in the Bashkir Autonomous Soviet Socialist Republic. The analytical characteristic of the works is given, the basic tendencies of the researchers on this issue are considered. It is shown that, as a result of changes in the political life of Russia, the main trends in the study of this problem have also changed. (shrink)

Now and in the foreseeable future the human race is and will be divided into societies that we call states and that are separated by strictly defined borders and regimes that are often in opposition to one another. If not all states are multinational, all of them are multicultural. Whenever a state is formed we can be sure that differences have already emerged and will soon declare themselves with a strong voice.