Objectives To evaluate whether the requirement of “minimal risk and burden” for paediatric research without direct benefit to the subjects compromises the ability to obtain data necessary for improving paediatric care. To provide evidence-based reflections on the EU recommendation that allows for a higher level of risk. Design and setting Systematic analysis of the approval/rejection decisions made by the Dutch Central Committee on Research involving Human Subjects (CCMO). Review methods The analysis included 165 proposals for paediatric research without direct benefit (...) that were reviewed by the CCMO between January, 2000, and July, 2007. A separate, in-depth analysis of all drug studies included 18 early phase drug studies and nine other drug studies without direct benefit. Results 11 out of 165 studies were definitively rejected because the CCMO did not regard the risk and/or burden to be minimal. In three of these 11 cases (including two early phase drug studies) the requirement of minimal risk and burden was cited as the only reason for rejection. Four other early phase drug studies also involved risks and/or burdens that were not regarded to be minimal but were nevertheless approved. Conclusions The requirement of minimal risk and burden, aiming to protect research subjects, occasionally leads to rejection of protocols. Early phase drug studies relatively often do not comply with the requirement. Committees may find ways to approve important studies that formally should be rejected, but that is not a desirable solution. The regulatory framework should be revised to make such occasional exceptions to the requirement legitimate and transparent. (shrink)

The relevance of exchange effects for the stability of superheavy nuclei is examined within a linear QHD-II model by comparing Hartree-Fock with meanfield results. To allow a scan of the complete superheavy regime the recently developed local density approximation (LDA) for the exchange potential is employed for the Hartree-Fock level calculations. It turns out that, while many nuclear properties obtained with the LDA approach differ significantly from the corresponding mean-field results, the predictions of the two methods for shell closures are (...) very similar. Furthermore, a comparison with a nonlinear variant of QHD-II shows that many nuclear properties obtained with the LDA in the framework of linear QHD-II are somewhere in-between the corresponding linear and nonlinear mean-field results. This indicates that the LDA exchange partially includes nonlinear contributions, which supports the interpretation of the meson self-coupling as a parametrization of many-body effects. (shrink)

The aim of this paper is to provide a conceptual framework that will help in understanding and evaluating, along social and ethical lines, the issue of killing day-old male chicks and two alternative directions of responsible innovations to solve this issue. The following research questions are addressed: Why is the killing of day-old chicks morally problematic? Are the proposed alternatives morally sound? To what extent do the alternatives lead to responsible innovation? The conceptual framework demonstrates clearly that there is a (...) moral “lock-in”, and why the killing of day-old chicks is indeed an issue. Furthermore, it is shown that both alternative directions address some important objections with regard to the killing of day-old chicks, but that they also raise new dilemmas. It also becomes clear that the framework enables and secures anticipation, reflection, deliberation with and responsiveness to stakeholders, the four dimensions of responsible innovation, in a structured way. (shrink)

In 2035 global egg demand will have risen 50% from 1985. Because we are not able to tell in the egg whether it will become a male or female chick, billons of one day-old male chicks will be killed. International research initiatives are underway in this area, and governments encourage the development of an alternative with the goal of eliminating the culling of day-old male chicks. The Netherlands holds an exceptional position in the European egg trade, but is also the (...) only country in the European Union where the downside of the egg sector, the practice of killing day-old male chicks, is a recurrent subject of societal debate. ‘Preventing the killing of young animals’ and ‘in ovo sex determination’ are the two alternative approaches available to solve this problem. It is clear that both approaches solve the problem of killing day-old male chicks, either by keeping them alive or by preventing them from living, but they also raise a lot of new animal welfare-related dilemmas. A thorough analysis was undertaken of these dilemmas and the results are presented in this article. The analysis resulted in an ethical framework based on the two main approaches in bioethics: a consequentialist approach and a deontological approach. This ethical framework was used to develop an online survey administered to ascertain Dutch public opinion about these alternative approaches. The results show that neither alternative will be fully accepted, or accepted by more than half of Dutch society. However, the survey does provide an insight into the motives that are important for people’s choice: food safety and a good treatment of animals. Irrespective of the approach chosen, these values should be safeguarded and communicated clearly. (shrink)

In current dairy farming it is possible to run a profitable farm without having to adapt the system to the needs of dairy cows. In such systems the interests of the farmer and animals often diverge. Consequently, specific animal welfare problems occur. Foot disorders in dairy cattle are an illustrative example resulting from the specific methods of housing and management in current dairy farming. Foot disorders and the resulting lameness are considered the most important welfare problem in dairy farming. However, (...) these foot disorders not only typify welfare problems related to certain housing systems, but they also lead to the premature culling of cows. The assessment of the impact of foot disorders on the welfare of dairy cows raised the question of whether premature culling affects animal welfare since it affects the longevity of a cow. We argue that this aspect of longevity is morally relevant as an animal welfare issue. In this paper we aim to explore whether longevity is both (a) a morally relevant aspect in the discussion on killing animals and (b) a constitutive element of animal welfare. In other words, we aim to explore whether longevity is an independent moral argument in an animal welfare discussion. We claim that longevity is not merely important as an indicator of animal welfare, but is also a constitutive element of animal welfare. We argue that we need a more integrated approach to animal welfare and that an assessment that includes the aspect of time is necessary. This view involves a shift from views on animal welfare in terms of functioning or feeling well to a view on animal welfare that includes the aspect of natural living in which species-specific development is important. To show the impact of these points of view, we look at the practical implications for choices concerning the management of foot disorders in dairy cattle. (shrink)

Articles on life and scholar works of academician Chimidiĭn Zhugder, famous Mongolian philosophy scholar.

An elementary textbook of Thomistic psychology, presenting traditional doctrines in traditional terms, and embodying pedagogical aids--summaries, questions and suggested readings--at the end of each chapter.--E. T.

Continuous recordings of brain electrical activity were obtained from a group of 176 patients throughout surgical procedures using general anesthesia. Artifact-free data from the 19 electrodes of the International 10/20 System were subjected to quantitative analysis of the electroencephalogram (QEEG). Induction was variously accomplished with etomidate, propofol or thiopental. Anesthesia was maintained throughout the procedures by isoflurane, desflurane or sevoflurane (N = 68), total intravenous anesthesia using propofol (N = 49), or nitrous oxide plus narcotics (N = 59). A set (...) of QEEG measures were found which reversibly displayed high heterogeneity of variance between four states as follows: (1) during induction; (2) just after loss of consciousness (LOC); (3) just before return of consciousness (ROC); (4) just after ROC. Homogeneity of variance across all agents within states was found. Topographic statistical probability images were compared between states. At LOC, power increased in all frequency bands in the power spectrum with the exception of a decrease in gamma activity, and there was a marked anteriorization of power. Additionally, a significant change occurred in hemispheric relationships, with prefrontal and frontal regions of each hemisphere becoming more closely coupled, and anterior and posterior regions on each hemisphere, as well as homologous regions between the two hemispheres, uncoupling. All of these changes reversed upon ROC. Variable resolution electromagnetic tomography (VARETA) was performed to localize salient features of power anteriorization in three dimensions. A common set of neuroanatomical regions appeared to be the locus of the most probable generators of the observed EEG changes. (shrink)

The immediate motive occasioning this letter was the worker E. Kopanitsyn's letter to the newspaper Izvestiia in which he eloquently recounts his difficulties with a new machine manufactured in a factory in the city of Cheliabinsk. After telling what effort it had cost him to get this machine going, Kopanitsyn in a fit of temper exclaims: "I am completely unable to understand one simple thing: How could such a machine come into being at all? The hands of many workers touched (...) it, except that these were not working hands. Can it really be true that no one, not a single person, was aroused enough to say: Just what are we doing here, brothers?". (shrink)

A tese é de que a concepção de Duhem da ciência antecipa, entre outros elementos, o modelo de escolha de teorias científicas associado com as concepções de Popper, Lakatos e Kuhn. No contexto do seu debate com Poincaré, Duhem propõe um modelo metodológico de escolha racional de teorias formado, também, de componentes extralógicos. O modelo substitui a metodologia bipartida, teoria e natureza, por uma tripartida, confrontação entre duas teorias e natureza. Tal metodologia verifica-se adequada para descrever o processo de escolha (...) de teoria formado das etapas da refutação e rejeição. Ambas as propostas revelam seu enfoque histórico-crítico cuja tese é a interdependência entre história e teoria da ciência. A interdependência configura-se num laboratório para a elaboração, a avaliação e teste das propostas metafísicas e metodológicas para a construção de uma teoria da ciência. (shrink)

O objetivo é propor uma reconstrução racional da concepção da ciência de Duhem, por meio do recurso da metodologia da teoria da ciência, como uma teoria normativa da dinâmica do conhecimento. Essa reconstrução ajuda a estabelecer que Duhem não pode ser classificado como um convencionalista/pragmatista, como sugere a interpretação-padrão, e, além disso, que Duhem almeja construir uma concepção que seja um termo médio entre a concepção metafísica clássica e a concepção do convencionalismo/pragmatismo. A estratégia metodológica para construir esse termo médio (...) é a proposta de um realismo estrutural e convergente. Duhem substitui o sujeito transcendental dos clássicos por uma teoria transcendental a ser alcançada por um processo dinâmico. Using the resources of the methodology of theory of science we propose a rational reconstruction of Duhem's conception of science, interpreting it as a normative theory of the dynamics of knowledge. Such a reconstruction helps to establish that Duhem cannot be classified as a conventionalist/pragmatist as proposed in the standard interpretation, and, furthermore, that Duhem proposes to construct a conception of science as a middle way between a classical metaphysical conception and a conventionalist/pragmatist conception. The methodological strategy for this middle way is the proposal of a structural and convergent realism. Duhem replaces the transcendental subject of the classics with a transcendental theory to be reached by a dynamic process. (shrink)

Decisions about targeting medical assistance in humanitarian contexts are fraught with dilemmas ranging from non-availability of basic services, to massive demographic and epidemiological shifts, and to the threat of insecurity and evacuations. Aid agencies are obliged, due to capacity constraints and competing priorities, to clearly define the objectives and the beneficiaries of their actions. That aid agencies have to set limits to their actions is not controversial, but the process of defining the limits raises ethical questions. In MSF, frameworks for (...) resource allocation are subject to constant reflection and reiteration, and perspectives are sought at all levels, from implementers at the programme level to the operational directors at headquarters. The perspectives of the programmes staff hold considerable weight as they have the knowledge and experience with particular communities to assess the degree of vulnerability and need, and are also the people who ultimately have to give explanations to beneficiaries when changes or closures are going to be instituted. Humanitarian agencies have a responsibility to ensuring that their workers are prepared to reflect on these dilemmas, and challenge the status quo when it costs lives. (shrink)