The crystallization behaviour of Fe 70.8 Nb 3.7 Cu 1 Al 2.7 Mn 0.7 Si 13.5 B 7.6 alloy prepared in the form of amorphous ribbons by melt-spinning technique was studied using differential scanning calorimetry and the temperature variation in resistivity. An X-ray diffaction and transmission electron microscopy study showed the formation of f -Fe and/or Fe 3 nanoparticles after the first stage of crystallization. The activation energy for this nanophase formation was 68 kcal mol m 1 . The brittleness (...) of the alloy increased with the formation of nanoparticles after heat treatment. Superior soft magnetic properties were achieved when the material was heat treated at 790 K for 15 min. The particle size at the optimum heat treatment condition for superior soft magnetic properties was found to be 6.0 - 0.5 nm which was less compared than for the Fe-Nb-Cu-Si-B system. The observed coercivity value at the optimum heat treatment condition was found to be 0.32 A m m 1 . The presence of Al in the alloy reduced the particle size and the magnetic anisotropy energy of the system, which resulted in superior soft magnetic properties of the heat-treated materials. (shrink)

Meiotic recombination occurs preferentially at certain regions called hot spots and is important for generating genetic diversity and proper segregation of chromosomes during meiosis. Hot spots have been characterized most extensively in yeast, mice and humans. The development of methods based on sperm typing and population genetics has facilitated rapid and high‐resolution mapping of hot spots in mice and humans in recent years. With increasing information becoming available on meiotic recombination in different species, it is now possible to compare several (...) molecular features associated with hot‐spot loci. Further, there have been advances in our knowledge of the factors influencing hot‐spot activity and the role that they play in structuring the genome into haplotype blocks. We review the molecular features associated with hot spots in terms of their properties and mechanisms underlying their function and distribution. A large number of these features seem to be shared among hot spots from different species suggesting common mechanisms for their formation and function. BioEssays 28:45–56, 2006. © 2005 Wiley Periodicals, Inc. (shrink)

This study adds to the empirical evidence supporting a significant connection between ethics and profitability by examining the connection between published reports of unethical behaviour by publicly traded U.S. and multinational firms and the performance of their stock. Using reports of unethical behaviour published in the Wall Street Journal from 1989 to 1993, the analysis shows that the actual stock performance for those companies was lower than the expected market adjusted returns. Unethical conduct by firms which is discovered and publicized (...) does impact on the shareholders by lowering the value of their stock for an appreciable period of time. Whatever their views on whether ethical behaviour is profitable, managers should be able to see a definite connection between unethical behaviour and the worth of their firm's stock. Stockholders, the press and regulators should find this information important in pressing for greater corporate and managerial accountability. (shrink)

In this paper, we use Saaty's Eigenvector Method and the Power Method as well as Ω=1, 2, ⋯ , 9, 1/2, 1/3, ⋯ , 1/9} and Ω-={1,2, ⋯ ,9,1, 1/2, ⋯ ,1/9} as the sets from which the pairwise comparison judgments are assigned at random to examine the variation in the values determined for the mean random consistency index. By extensive simulation analysis, we found that both methods produce the same values for the mean random consistency random index. Also, we (...) found that the reason for producing two different sets of values is the use of Ω vs. Ω- and not the selection of the Power Method vs. Saaty's Eigenvector Method. (shrink)

Social media contain abundant information about the events or news occurring all over the world. Social media growth has a greater impact on various domains like marketing, e-commerce, health care, e-governance, and politics, etc. Currently, Twitter was developed as one of the social media platforms, and now, it is one of the most popular social media platforms. There are 1 billion user’s profiles and millions of active users, who post tweets daily. In this research, buzz detection in social media was (...) carried out by the semantic approach using the condensed nearest neighbor (SACNN). The Twitter and Tom’s Hardware data are stored in the UC Irvine Machine Learning Repository, and this dataset is used in this research for outlier detection. The min–max normalization technique is applied to the social media dataset, and additionally, missing values were replaced by the normalized value. The condensed nearest neighbor (CNN) is used for semantic analysis of the database, and based on the optimized value provided by the proposed method, the threshold is calculated. The threshold value is used to classify buzz and non-buzz discussions in the social media database. The result showed that the SACNN achieved 99% of accuracy, and relative error is less than the existing methods. (shrink)

The attention schema theory explains how a biological, information processing machine can claim to have consciousness, and how, by introspection (by assessing its internal data), it cannot determine that it is a machine whose claims are based on computations. The theory directly addresses Chalmers' meta-problem of consciousness, the problem of why we think we have a difficult-to-explain consciousness in the first place.

Background: Ethics support services are growing in Europe to help doctors in dealing with ethical difficulties. Currently, insufficient attention has been focused on the experiences of doctors who have faced ethical difficulties in these countries to provide an evidence base for the development of these services.Methods: A survey instrument was adapted to explore the types of ethical dilemma faced by European doctors, how they ranked the difficulty of these dilemmas, their satisfaction with the resolution of a recent ethically difficult case (...) and the types of help they would consider useful. The questionnaire was translated and given to general internists in Norway, Switzerland, Italy and the UK.Results: Survey respondents ranged in age from 28 to 82 years, and averaged 25 years in practice. Only a minority reported having access to ethics consultation in individual cases. The ethical difficulties most often reported as being encountered were uncertain or impaired decision-making capacity , disagreement among caregivers and limitation of treatment at the end of life . The frequency of most ethical difficulties varied among countries, as did the type of issue considered most difficult. The types of help most often identified as potentially useful were professional reassurance about the decision being correct , someone capable of providing specific advice , help in weighing outcomes and clarification of the issues . Few of the types of help expected to be useful varied among countries.Conclusion: Cultural differences may indeed influence how doctors perceive ethical difficulties. The type of help needed, however, did not vary markedly. The general structure of ethics support services would not have to be radically altered to suit cultural variations among the surveyed countries. (shrink)

As support for clinical ethics committees in the UK grows, care must be taken to define their function, membership and method of working and the status of their decisions.The modern practice of medicine raises a plethora of complex issues—medical, ethical and legal. Doctors and other healthcare professionals increasingly must try to resolve these and may sometimes have to do so in the face of contrary opinion expressed by patients and/or their surrogates. While clearly qualified in the medical arena, and although (...) there is now more ethics teaching in the medical curriculum, healthcare professionals are seldom qualified to adjudicate on ethical or legal matters, or even, perhaps, to recognise them when they arise. Yet, as Doyal says, “clinical life must go on and moral and legal indeterminacy within medicine cries out for practical resolution.”1 Meanwhile, the expectations of patients and their families—and, indeed, of wider society—are that decisions about patient care, resources and therapeutic regimes should be soundly based on appropriate ethicolegal, as well as scientific, principle.Recognition of these additional burdens on healthcare professionals has generated some interest in the provision of ethics consultation. In the USA this has been undertaken by a variety of tribunals and individuals. Hospital ethics committees and ethics consultants feature in many US hospitals and perform a variety of roles. In Europe, a number of countries have also established clinical ethics committees and they are becoming more common in the UK—primarily in England and Wales for the moment. Whereas, however, “[i]n North America, CECs have … become an integral part of the organisational infrastructure of hospitals ...”,1 in the United Kingdom they remain essentially ad hoc bodies, generated for a variety of reasons and with different goals, structures, membership, methods of working and functions. The initial impetus for the …. (shrink)

In an international survey of rationing we have found that European physicians encounter scarcity-related ethical difficulties, and are dissatified with the resolution of many of these cases. Here we further examine survey results to explore whether ethics support services would be potentially useful in addressing scarcity related ethical dilemmas. Results indicate that while the type of help offered by ethics support services was considered helpful by physicians, they rarely referred difficulties regarding scarcity to ethics consultation. We propose that ethics consultants (...) could assist physicians by making the process less difficult, and by contributing to decisions being more ethically justifiable. Expertise in bringing considerations of justice to bear on real cases could also be useful in recognising an unjust limit, as opposed to a merely frustrating limit. Though these situations are unlikely to be among the most frequently referred to ethics support services, ethics consultants should be prepared to address them. (shrink)

The study ascertained (1) whether an observer's scope of justice with reference to either the moral agent or the target person of a moral act, would affect his/her judgements of the ethicality of the act, and (2) whether observer judgements of ethicality parallel the moral agent's decision processes in systematically evaluating the intensity of the moral issue. A scenario approach was used. Results affirmed both research questions. Discussions covered the implications of the findings for the underlying cognitive processes of moral (...) judgements, for the link between judgements of fairness and ethicality, as well as for the debate of ethical absolutism versus relativism. (shrink)

Работа предназначена для ученых и специалистов, преподавателей, аспирантов, слушателей, студентов, а также всех интересующихся рассматриваемой темой.

The community representative plays a very important role in an institutional review board but there is sparse data about their understanding of their role in an IRB. This study was conducted to assess perceptions of community members serving on IRBs of one region in India. A validated questionnaire was administered to community members of IRBs in a prospective cross-sectional study. The questions related to demography, perceptions of their role in the IRB, experiences while serving on the IRBs, difficulties faced by (...) them, and suggestions to improve their contributions. Of the 56 IRBs contacted, all 15 of the public institutions shared details of their community members, while only 26 of the 41 IRBs of private institutions responded. When questioned about why they joined the IRB, one third of the respondents said either that there was “no specific reason” for joining or that they accepted the invitation to serve on the insistence of other members of the IRBs or the head of their institution. All except one felt that community members were needed for optimal functioning. Six participants said that they did not review informed consent documents, and 10 were unaware that their presence was vital for quorum to be met. Twenty-eight said they participated actively in meetings and did not feel intimidated by the presence of clinicians. Twelve reported difficulties in understanding medical terminologies in ICDs. Although the majority of participants were aware about their role in an IRB, some did not review important documents such as ICDs. Restricted participation by private hospital IRBs was a striking observation in our study. There is a need to define eligibility criteria and develop targeted training modules for community members to ensure their effective contribution to effective oversight of clinical research. (shrink)

This is an extremely readable and interesting contribution. The author takes the reader through the Patient Self-Determination Act in some depth, but doesn't make any attempt to look at its provisions in real detail. This cannot be taken as an omission, as the purpose of the book is to explore the principles underpinning the legislation and to explore its ethical content. In that respect, this is a very interesting exercise. On one ….

A new class of program-oriented logical formalisms is investigated – renominative logics with extended renominations, equality predicates, and predicate complement composition. Composition algebras and languages of such logics are described; their semantic properties are investigated. For these logics, a number of logical consequence relations are proposed and investigated, in particular, the logical consequence relations with undefinedness conditions. Properties of these relations form the semantic basis for further construction of sequent-type calculi for the proposed logics.

The patient-doctor relationship has recently come under intense scrutiny, resulting in a re-evaluation of the basis of that relationship. The papers by Glannon and Ross, and McKay seek to identify the sources of authority in the patient-doctor relationship by evaluating it in terms of the concept of altruism. In this paper I argue that the analysis of Glannon and Ross, and of McKay is unnecessary and that the analysis offered by the latter is also flawed. I do acknowledge, however, that (...) Glannon and Ross's description of doctors' responsibilities and patients' roles has much to commend it. (shrink)