The 3D Prandtl fluid flow through a bidirectional extending surface is analytically investigated. Cattaneo–Christov fluid model is employed to govern the heat and mass flux during fluid motion. The Prandtl fluid motion is mathematically modeled using the law of conservations of mass, momentum, and energy. The set of coupled nonlinear PDEs is converted to ODEs by employing appropriate similarity relations. The system of coupled ODEs is analytically solved using the well-established mathematical technique of HAM. The impacts of various physical parameters (...) over the fluid state variables are investigated by displaying their corresponding plots. The augmenting Prandtl parameter enhances the fluid velocity and reduces the temperature and concentration of the fluid. The momentum boundary layer boosts while the thermal boundary layer mitigates with the rising elastic parameter strength. Furthermore, the enhancing thermal relaxation parameter ) reduces the temperature distribution, whereas the augmenting concentration parameter drops the strength of the concentration profile. The increasing Prandtl parameter declines the fluid temperature while the augmenting Schmidt number drops the fluid concentration. The comparison of the HAM technique with the numerical solution shows an excellent agreement and hence ascertains the accuracy of the applied analytical technique. This work finds applications in numerous fields involving the flow of non-Newtonian fluids. (shrink)

We present a new viable nonlinear chaotic paradigm. This paradigm has four nonlinear terms. The essential features of the new paradigm have been investigated. Our new system is confirmed to have chaotic behaviors by calculating its Lyapunov exponents. The relations of the system states are displayed by a suggested new signal flow graph. The proposed SFG is discussed via some graph theory tools, and some of its hidden features are calculated. In addition, the system is realized via constructing its electronic (...) circuit which helps in the real applications. Also, a robust controller for the system is designed with the aid of a genetic algorithm. (shrink)

Clinical responses to dopamine replacement therapy for individuals with Parkinson’s disease are often difficult to predict. We characterized changes in MDS-UPDRS motor factor scores resulting from a short-duration L-Dopa response, and investigated how the inter-subject clinical differences could be predicted from motor cortical magnetoencephalography. MDS-UPDRS motor factor scores and resting-state MEG recordings were collected during SDR from twenty individuals with a PD diagnosis. We used a novel subject-specific strategy based on linear support vector machines to quantify motor cortical oscillatory frequency (...) profiles that best predicted medication state. Motor cortical profiles differed substantially across individuals and showed consistency across multiple data folds. There was a linear relationship between classification accuracy and SDR of lower limb bradykinesia, although this relationship did not persist after multiple comparison correction, suggesting that combinations of spectral power features alone are insufficient to predict clinical state. Factor score analysis of therapeutic response and novel subject-specific machine learning approaches based on subject-specific neuroimaging provide tools to predict outcomes of therapies for PD. (shrink)

Introduction: Cognitive behavioral therapy for children and adolescents has shown efficacy in treating different psychiatric disorders. It has been added to multiple clinical guidelines as the first-line treatment. However, despite more studies of its efficacy, CBT is underutilized in clinical settings due to a lack of rigorous training programs and qualified CBT therapists. The limited knowledge of parents in this intervention and their negative attitudes toward it have been considered as possible reasons.Methods: This is a cross-sectional survey-based study among 464 (...) Saudi parents living in Riyadh city. We aimed to evaluate the preference, knowledge, and attitudes of Saudi parents toward CBT for their children. We compared the difference in the level of knowledge and attitudes toward CBT in relation to the characteristics of parents. An online questionnaire that included 39 questions was carefully reconstructed from four validated scales, approved by an expert panel, and piloted. Participants were recruited to participate through online social media.Results: Saudi parents had average knowledge about CBT; however, they had positive attitudes toward the therapy itself and its role in treating the behavioral issues of children. Male participants showed better knowledge than female participants. Participants with higher education and those with high income had more favorable attitudes toward CBT than others.Conclusion: The knowledge of parents is considered inadequate and indicated the need for more awareness and perhaps mass education. In contrast, they maintained positive attitudes and were interested in evidence-based treatment, with more preference toward non-psychopharmacological interventions. (shrink)

Background: Older, frail patients with multimorbidity are at an especially high risk for disease severity and death from COVID-19. The social restrictions proved challenging for the residents, their relatives, and the care staff. While these restrictions clearly impacted daily life in Norwegian nursing homes, knowledge about how the pandemic influenced nursing practice is sparse. Aim: The aim of the study was to illuminate ethical difficult situations experienced by Norwegian nurses working in nursing homes during the COVID-19 pandemic. Research design and (...) participants: The research design involved semistructured individual interviews conducted with 15 nurses working in 8 nursing homes in 3 health regions in Norway, within both urban and rural areas. Ethical considerations: Oral and written information about the study was provided before the participants gave their written consent. The transcribed interviews were de-identified. The study was approved by the Norwegian Centre for Research Data. Findings: Four ethical difficult situations were identified: (a) turning the nursing home into a prison; (b) using medication to maintain peace and order; (c) being left alone with the responsibility; and (d) s. impact on decision-making. Conclusions: The nurses’ ethical challenges were intertwined with external factors, such as national and local guidelines, and the nurses’ own internalized factors, which were connected to their subjective professionality. This duality inflicted emotional distress and gave nurses few opportunities to perform nursing in a professionally sound and safe manner. (shrink)

The main purpose of this study was to examine the relationship between flow experience and goal orientation theory, as well as, the differences in flow experience based on the orthogonal model of goal orientation theory. Two hundred and seventy eight athletes completed the Task and Ego Orientation Sport Questionnaire based on how they usually feel. The Flow State Scale was completed thirty minutes after an important competition, along with the challenge-skill ratings, based on how athletes felt during the particular competition. (...) The results indicated that the athletes’ task orientation may be the critical factor for attaining flow in competitive sport, feeling more skillful and estimating the upcoming competition as challenging, while ego orientated athletes lack these elements, which are important for them to get into flow. Additionally, the balance between athletes’ goal orientation preferences seems important for the formation of flow experience. (shrink)

A total of 80 authors working in a variety of scientific disciplines commented on the theoretical model of CLimate, Aggression, and Self-control in Humans (CLASH). The commentaries cover a wide range of issues, including the logic and assumptions of CLASH, the evidence in support of CLASH, and other possible causes of aggression and violence (e.g., wealth, income inequality, political circumstances, historic circumstances, pathogen stress). Some commentaries also provide data relevant to CLASH. Here we clarify the logic and assumptions of CLASH (...) and discusses its extensions and boundary conditions. We also offer suggestions for future research. Regardless of whether none, some, or all of CLASH is found to be true, we hope it will stimulate future research on the link between climate and human behavior. Climate is one of the most presing issues of our time. (shrink)

In 1970 Van Rensselaer Potter was the first to use the term "bioethics" in a publication to advocate the development of a new discipline to address the basic problems of human flourishing. This article analyzes Potter's notion of bioethics in order to understand its origins, sources, and substance. In early publications, Potter conceptualized bioethics as a bridge: between present and future, nature and culture, science and values, and finally between humankind and nature. In later publications, disappointed by a predominant focus (...) on individual and medical issues, and with a wish to underscore the need for a broader perspective, Potter introduced the new term "global bioethics," meant to transcend ethics specialties and integrate them into a new interdisciplinary endeavor to address global problems. A growing interest in global bioethics today means that Potter's original insights are more timely than ever. (shrink)

This paper explores the role of ‘community’ in the context of global bioethics. With the present globalization of bioethics, new and interesting references are made to this concept. Some are familiar, for example, community consent. This article argues that the principle of informed consent is too individual-oriented and that in other cultures, consent can be community-based. Other references to ‘community’ are related to the novel principle of benefit sharing in the context of bioprospecting. The application of this principle necessarily requires (...) the identification and construction of communities. On the global level there are also new uses of the concept of community as ‘global community.’ Three uses are distinguished: (1) a diachronic use, including past, present, and future generations, (2) a synchronic ecological use, including nonhuman species, and (3) a synchronic planetary use, including all human beings worldwide. Although there is a tension between the communitarian perspective and the idea of global community, this article argues that the third use can broaden communitarianism. The current development towards cosmopolitanism is creating a new global community that represents humanity as a whole, enabling identification of world citizens and evoking a sense of global solidarity and responsibility. The emergence of global bioethics today demonstrates this development. (shrink)

Dutch science flourished in the late sixteenth and in the seventeenth century thanks to the immigration of cartographers, botanists, mathematicians, astronomers and the like from the Southern Netherlands after the Spanish army had captured the city of Antwerp in 1585, and thanks to the religious and the socio‐economic situation of the country. A strong impulse for practical scientific activities started from the Reformation, mainly thanks to its anti‐traditional attitude, which had an anti‐rationalistic tendency. Therefore, in the Northern Netherlands there was (...) no ‘warfare’ between science and religion and the biblical arguments leading to Galileo's condemnation were not used.Although the growth of the exact sciences and of technology in the late sixteenth and the seventeenth centuries in Protestant cirles may be partly attributed to the expansion of trade, industry, navigation and so on, this does not explain why there was also at the same time a great interest in subjects as botany and zoology, which had no immediate economic utility. There were discussions about Copernicanism and Cartesianism. So a number of astronomers and theologians rejected the earth's movement on scientific and religious grounds, but there were also those who did not reject the Copernican system on biblical grounds. In the seventeenth century there was much discussion between science and religion in the Northern Netherlands, but that discussion was not followed by censure by the Church of the State. In the Republic there was a large amount of intellectual freedom in the study of the natural sciences, thanks to practical and ideological considerations. In the eighteenth century the seventheenth century tension between science and religion changed into a physicotheological natural science. It was believed that investigations into the workings of nature should lead to a better understanding of its Creator. So Bernard Nieuwentijt in his well‐known book: The right use of‐world views for the conviction of atheists and unbelievers (1715) intended to prove the existence of God on the basis of teleological arguments. (shrink)

Global bioethics and the environment -- Biodiversity -- Health -- Disease -- Drugs -- Food -- Water -- Global bioethics in practice.

Dr Seuren's study deals with the problem of presenting an adequate model of grammatical description. The model he proposes conforms in its main outlines to the transformational generative grammar established by Chomsky, but differs in important respects. These mainly affect that part of Chomsky's syntactic component known as the 'base', which generates basic or 'deep' structures. In the model of the base proposed here two main constituents are distinguished for every deep structure representation of a sentence, vis-a-vis the operators and (...) the nucleus. The deep structure of a sentence is thus seen to be very similar to the logical structure of a proposition. The arguments given in support of this analysis are based on mainly on considerations of simplicity and semantic adequacy. (shrink)

We review some of the essential novel ideas introduced by Bohm through the implicate order and indicate how they can be given mathematical expression in terms of an algebra. We also show how some of the features that are needed in the implicate order were anticipated in the work of Grassmann, Hamilton, and Clifford. By developing these ideas further we are able to show how the spinor itself, when viewed as a geometric object within a geometric algebra, can be given (...) a meaning which transcends the notion of the usual metric geometry in the sense that it must be regarded as an element of a broader and more general pregeometry. (shrink)

Euthanasia and physician-assisted suicide are controversial issues in medical ethics and medical law. In the debate, several arguments against the moral acceptability and legal feasibility of active involvement of physicians in bringing about a patient’s death can be found.One argument refers back to the Ten Commandments: “Thou shall not kill”. Killing another human being is morally abject. According to the argument, this is certainly so for medical doctors, as can be seen in the Hippocratic Oath, which explicitly forbids abortion and (...) euthanasia. A less apodictic argument refers to the slippery slope: if euthanasia would be permitted, a downhill movement is set in motion. The end of this movement would be, on the one hand, that physicians will feel forced to assist people who ask for termination of life on whatever grounds. On the other hand, it might lead to a situation in which it becomes normal to kill people who are no longer useful for society.In the literature and in the public debate, there are also arguments in favour of euthanasia and physician-assisted suicide. One such argument invokes the right to die. According to this argument, decisions concerning life and death should be up to the individual who is concerned. In many countries, suicide is morally and legally accepted. If people are allowed to kill themselves, why should they be without rights when they are no longer able to perform the act themselves?In medical ethics and medical law, patient autonomy is a central pivot. Patients have the right to refuse treatment even if this leads to their death. Shouldn’t people also have the right to determine the moment of dying, if they are in a situation which is unbearable, and without prospect of improvement? Another argument focuses on the duty of the physician to alleviate pain and suffering. If there is no other option, the doctor, in fulfilling this duty, should be allowed to actively end the patient’s life. This argument is not based on autonomy, but on beneficence.The debate concerning euthanasia involves fundamentally different moral principles. This makes the debate interesting, if not central to medical ethics and medical law. Yet, the principles are normally presented in an abstract way. Discussants stick to very general ideas, which lack reference to specific social and historical conditions, and are not related to concrete experiences. To invoke the Ten Commandments, or plea for a right to die, implies the use of universal standards, which tend to be general and empty.From a philosophical perspective, this type of argumentation can be criticized. Following Aristotle, ethics should be based upon experience. Ethical knowledge requires participation in concrete practices. Central to ethics is a feeling for the concrete situation, which is always contingent and historical. From this perspective, it makes sense to consider how practitioners in specific situations deal with moral issues, for instance concerning euthanasia. What role do they give to notions such as autonomy and beneficence, how do they interpret them and apply them to the concrete situation?In this paper I will present the Dutch experience with euthanasia. I will focus upon the way in which during the past thirty years the arguments in favour of euthanasia have been developed, in interaction with euthanasia practice. I will show that patient autonomy has been a crucial pivot. Yet, the Dutch interpretation of autonomy is not purely liberal. It does not only involve rights, but also obligations. Next, I will make clear that the physician plays a central role, in that the moral and legal basis of euthanasia is a conflict of duties on the side of the physician.This brings in the issue of beneficence. Yet the Dutch interpretation of the duty to help is not simply paternalistic. In Dutch health care, the physician-patient relationship is based upon deliberation and mutual agreement. Therefore, my conclusion will be that the Dutch practice of euthanasia has a moral ground, which goes beyond the traditional opposition between autonomy and beneficence. (shrink)

Solidarity belongs to the basic principles of Catholic Social Teaching (CST) and is part of the ethical repertoire of European moral traditions and European healthcare systems. This paper discusses how leaders of Catholic healthcare organizations (HCOs) can understand their institutional moral responsibility with regard to the preservation of solidarity. In dealing with this question, we make use of Taylor's philosophy of modern culture. We first argue that, just as all HCOs, Catholic ones also can embody and strengthen solidarity by just (...) doing their quintessential job, that is, to care for people with ill health. Second, we focus on the Catholic identity of these organizations and argue that this characteristic can empower a radical commitment to solidarity. Finally, we argue that CST provides a critical ethical framework for approaching solidarity from the perspective of the common good. (shrink)

OBJECTIVES: To study the opinions of nationals (Emiratis) and doctors practising in the United Arab Emirates (UAE) with regard to informing terminally ill patients. DESIGN: Structured questionnaires administered during January 1995. SETTING: The UAE, a federation of small, rich, developing Arabian Gulf states. PARTICIPANTS: Convenience samples of 100 Emiratis (minimum age 15 years) and of 50 doctors practising in government hospitals and clinics. RESULTS: Doctors emerged as consistently less in favour of informing than the Emiratis were, whether the patient was (...) described as almost certain to die during the next six months or as having a 50% chance of surviving, and even when it was specified that the patient was requesting information. In the latter situation, a third of doctors maintained that the patient should not be told. Increasing survival odds reduced the number of doctors selecting to inform; but it had no significant impact on Emiratis' choices. When Emiratis were asked whether they would personally want to be informed if they had only a short time to live, less than half responded in the way they had done to the in principle question. CONCLUSIONS: The doctors' responses are of concern because of the lack of reference to ethical principles or dilemmas, the disregard of patients' wishes and dependency on survival odds. The heterogeneity of Emiratis' responses calls into question the usefulness of invoking norms to explain inter-society differences. In the current study, people's in principle choices did not provide a useful guide to how they said they would personally wish to be treated. (shrink)

A medical profession which did not seek improved means to conquer disease would be condemned for dereliction of its duty, Members of the public will not accept the current state of the medical arts as finite but feel justified in expecting the development of more effective therapies for illness, and the promotion of improved means of preventive care.With this assertion, the distinguished academic, Bernard Dickens, places research firmly in the domain of the public interest. Foster agrees, saying that, “[t]o improve (...) medical care as much as we can, if not to perfect it, means that we have to accept the need for research.” Giesen adds a further emphasis to the search for medical advancements, saying that “freedom of research and scientific inquiry is, in itself, an important aspect of open societies.“. (shrink)

A medical profession which did not seek improved means to conquer disease would be condemned for dereliction of its duty, Members of the public will not accept the current state of the medical arts as finite but feel justified in expecting the development of more effective therapies for illness, and the promotion of improved means of preventive care.With this assertion, the distinguished academic, Bernard Dickens, places research firmly in the domain of the public interest. Foster agrees, saying that, “[t]o improve (...) medical care as much as we can, if not to perfect it, means that we have to accept the need for research.” Giesen adds a further emphasis to the search for medical advancements, saying that “freedom of research and scientific inquiry is, in itself, an important aspect of open societies.“. (shrink)