A simple model of an exciton-phonon system is studied in connection with quantum chaos.

The classical definition of theology is 'faith-seeking understanding'. The focus is on the understanding/interpretation of the object of Christian faith: God. There is another root for the quest for understanding, namely the praxis situation of faith. People live in particular historical contexts that have their own distinctive problems and possibilities; thus, the focus on place and space in a theology of home. A praxis approach is to learn life and the gospel from below, thus the emphasis on a grassroots ecclesiology (...) that is structured like an oikos, a familial dwelling place. This understanding of the dynamics of the fellowship of believers as oikodomein is captured by the Zulu notion for the yearning for home : Ekhaya. It is argued that Ekhaya thinking is an alternative route for an operative ecclesiology that caters for the need of marginalised, oppressed, displaced and homeless people. Practical theology is thus described as fides quaerens domum et locum [faith-seeking home and place], namely to inhabit. An Ekhaya approach to practical theological ecclesiology is about critical reflection through the eyes of those who are weak and who don't count for much by the standards of successful people and institutions. (shrink)

Postcolonialism and decolonising campaigns are expressions of human pain on the level of identity confusion (inferiority), ideological abuse (cultural discrimination) and structural oppression (imperialistic exploitation). The slogan ‘Black Pain is a White Commodity’ in the #MustFall campaigns is critically analysed within the framework of postcolonial theory and imperialistic power categories. The basic hypothesis of the article is that in early Christianity, pantokrator images of God were influenced by iconography stemming mostly from the Roman Emperor cult and Egyptian mythology. The power (...) (omnipotence) and dominiumship of God directly and indirectly played a role in Christian imperialistic thinking regarding the expansion of the Kingdom of God and missio Dei strategies during times of European and colonial expansionism. In order to address the quest for ‘moving beyond’ in postcolonial theory, the impact of pantokrator-images of God on ecclesial thinking is researched. In order to contribute to sustainability and stability within the complexity of cultural diversity and current civil unrest on campuses in South Africa, the paracletic notion of compassionate being-with is developed within the framework of practical theological thinking. Instead of a Caesar-depiction, the theological notion of passio Dei is proposed: the decolonialising (post-imperialising) God. (shrink)

Pastoral care must recover its unique identity as a theological discipline. In addressing the reality of evil, pastoral care reinterprets divine power as compassionate and creative empowerment, the basis for hopeful activity.

In our exposure to weakness, vulnerability, loss, anguish and different forms of impairment, the following pastoral theological questions arises: What is meant by divine almightiness within the human need for spiritual strength, empowerment, encouragement and well-being? The epithet of almightiness (omnipotence, pantokratōr) gave birth to fictitious and speculative associations, even fear and anxiety: The paralyzing fear of God Almighty – divine intoxicating and spiritual pathology. Instead of a pantokratōr-definition of God, a paraklēsis-infinition of God is proposed. This paradigm shift is (...) based on the hermeneutical insight, namely, that the El Shadday of Yahweh is based on the respect in Jewish hermeneutics to render God not as a personified substance, but as an ‘operating verb’ – hjh. In the verbing of God, El Shadday points to encouragement, empowerment and a kind of pity and comfort based on the passio Dei. Contribution: How one perceives the power of God, determines the practice of Christian devotion and spirituality. Therefore, the emphasis on the notion of ‘God Almighty’ (omnipotence of God) and its link to the notion of the ‘weakness of God’ as exposed in the basic outline for a theology of the cross and as a source for hope in pastoral care and compassionate reaching out. (shrink)

How may or should adherents of a particular religion assess other religious traditions? Whether they can avoid both absolutism and relativism depends on the availability of “ecumenical criteria”, i.e. a common scale in view of which the adherents of different religious traditions may jointly judge these traditions. It is argued that such a scale may exist even if we assume that the adherents of the different religions do not have any religious beliefs or criteria in common. This scale may exist (...) insofar as believers may share certain meta-religious criteria, e.g. the coherence of beliefs, their existential relevance and efficiency – i.e. their capacity to meet needs and concerns, including ethical-political and scientific concerns – and the impressiveness of beliefs. As such these criteria coincide with conditions that regulate the effective functioning of religions as ultimate frames of reference. However, it is not assumed that these criteria constitute ahistorical foundations. Adherents of the different religious traditions may not agree on the coherence, the existential relevance and efficiency, or the impressiveness of beliefs. Neither will they necessarily agree that these considerations are appropriate. Whether such an agreement exists will only, if at all, become apparent through inter religious dialogue. S. Afr. J. Philos. Vol.23(3) 2004: 302-326. (shrink)

Do adherents of different religious traditions communicate and, if so, how? What enables them to do so? What is interreligious “communication”? These issues are ad dressed with reference to Wilfred Cantwell Smith's hermeneutical rule, and to inter alia Paul Knitter, Martin Heidegger, Hans-Georg Gadamer, David Tracy, and John Dunne. Four responses to the question as to what permits interreligious communication are criticised. According to a fifth response, on which the author elaborates, interreligious communication is not – as the objectivist claims (...) – possible because members of different religious traditions speak the very same language, or – as the relativist claims – impossible because they speak radically different languages. Adherents of different religions communicate, if at all, by means of an analogical language. This language is the product of persistent efforts to understand the religion/faith of the other as he or she understands it. Paradoxically, the language that permits inter religious communication is thus the product of such communication. Without thereby reverting to objectivism or an essentialist view of religion, the author identifies five “less unstable” similarities between religions. These and other “less un stable” similarities might assist believers in their efforts to under stand the religious other. (shrink)

“Neo-inclusivism” is explained and assessed as an approach to the problem of the conflicting claims to truth of different religions, with reference to inter alia John B. Cobb (Jr.), Gavin D'Costa and Paul Ingram. For the neo-inclusivist the truth of a religious tradition depends on its inclusivistic capacity, i.e. its capacity to assimilate other traditions. For ex ample, by being enriched and transformed through “radical openness” to other traditions, while remaining “committed” to her own tradition – so the neo-inclusivist claims (...) – the theology of the Christian can become “truly global”. Neo-inclusivism seemingly transcends the absolutist habits of inclusivists, i.e. to assess the religious other in view of criteria (the inclusivist's own religious tradition) with which the other does not identify himself or herself. However, the neo-inclusivist plays down the possible limits of inter religious openness and is overly optimistic about the possibility of a “truly global” theology. Moreover, whether the neo-inclusivist's “committed openness” significantly differs from the approach of those who arbitrarily use the definitive norms of their own religious tradition to assess other traditions, is at least debatable. Whatever the case may be, insofar as tolerance cannot tolerate intolerance, the neo-inclusivist is necessarily intolerant, and, in this sense, “absolutist”, towards those who make their own beliefs normative for all and shun themselves from the assessments and new insights of others. S. Afr. J. Philos. Vol.23(1) 2004: 82-107. (shrink)

Background‘The Clinical Ethics Advisory Group’ (CEAG) is the clinical ethics support body for Newcastle upon Tyne Hospitals National Health Service Foundation Trust. A significant change in CEAG’s way of working occurred over the past 5 years as a result of Court decisions, increasing public expectations and an increase in CEAG’s paediatric case flow.PurposeReview historical data: (a) as a useful benchmark to look for the early impact of significant service changes and (b) to seek possible reference (‘sentinel’) cases for use with (...) a posited practical (casuistic) case-based reasoning model.MethodsAudit of the minutes of the first 22 years’ meetings was undertaken by the two chairs of CEAG over that period of time.Results223 matters discussed: 86 Trust policy issues; 117 clinical cases (84 adult (32 urgent), 33 child (8 urgent)); 12 CEAG procedural issues and 8 UK Clinical Ethics Network ‘round robin’ cases. The range of topic areas was wide. A broad range of ethical structures were deployed, principlism predominated. Quality was subjectively assessed by each reviewer, but different methods were used. This proved highly concordant between the two reviewers. 47% (105/223) of discussions were ‘excellent’ (*A4C4–A4C4) and 70% (156.5/223) ‘good’ or better (*A4C4–A3C3). By meeting the criteria of ‘excellent’ and ‘prospective’, 92/223 (41%) of matters were deemed potentially suitable as sentinel cases.ConclusionsThe audit provides a rich vein of information. There is demand for CEAG’s services, workload is becoming more complex. Formal funding for such services seems justified. (shrink)

Dementia is an illness that raises important questions about our own attitudes to illness and aging. It also raises very important issues beyond the bounds of dementia to do with how we think of ourselves as people--fundamental questions about personal identity. Is the person with dementia the same person he or she was before? Is the individual with dementia a person at all? In a striking way, dementia seems to threaten the very existence of the self.LThis book brings together philosophers (...) and practitioners to explore the conceptual issues that arise in connection with this increasingly common illness. Drawing on a variety of philosophers such as Descartes, Lock, Hume, Wittgenstein, the authors explore the nature of personal identity in dementia. They also show how the lives and selfhood of people with dementia can be enhanced by attention to their psychological and spiritual environment. Throughout, the book conveys a strong ethical message, arguing in favor of treating people with dementia with all the dignity they deserve as human beings. The book covers a range of topics, stretching from talk of basic biology to talk of a spiritual understanding of people with dementia. Accessibly written by leading figures in psychiatry and philosophy, the book presents a unique and long overdue examination of an illness that features in so many of our lives. (shrink)

In this paper the current legislative landscape and the challenges researchers face in obtaining informed consent in acute situations are explored. In such situations, some current guidelines can be difficult or impossible to apply. Capacity should be formally assessed before consent is sought to ensure that vulnerable persons are neither inappropriately recruited to a study nor denied the opportunity to participate. However, there is little guidance in current legislation as to how this should be achieved. When the patient is considered (...) to be unable to provide prospective informed consent, other forms are sometimes permissible, although all have specific drawbacks. First, it is argued that a brief instrument, suitable for the acute situation, is needed to determine whether patients have the capacity to consent to clinical trials. Secondly, it is argued that there are areas of the informed consent process that require review, and ways that improvements could be made are suggested. (shrink)

In emergency research, obtaining informed consent can be problematic. Research to develop and improve treatments for patients admitted to hospital with life-threatening and debilitating conditions is much needed yet the issue of research without consent (RWC) raises concerns about unethical practices and the loss of individual autonomy. Consistent with the policy and practice turn towards greater patient and public involvement in health care decisions, in the US, Canada and EU, guidelines and legislation implemented to protect patients and facilitate acute research (...) with adults who are unable to give consent have been developed with little involvement of the lay public. This paper reviews research examining public opinion regarding RWC for research in emergency situations, and whether the rules and regulations permitting research of this kind are in accordance with the views of those who ultimately may be the most affected. (shrink)

We reflect, using a vignette, on conceptual tensions and the value judgements that lie behind difficult decisions about whether or not the older person with dementia should return home or move into long-term care following hospital admission. The paper seeks, first, to expose some of the difficulties arising from the assessment of residence capacity, particularly around the nature of evaluative judgements and conceptual tensions inherent in the legal approach to capacity. Secondly, we consider the assessment of best interests around place (...) of residence, which demonstrates significant conceptual tensions. In addition, ‘best interests’ raise issues around the perception of risk and the perceptions of the family and crucially involve the notions of autonomy and trust. Finally, we not only gesture at some practical considerations based on insights from values-based medicine, but also make the suggestion that we require tighter functional assessments of residence capacity coupled with broader judgements about best interests. (shrink)

Plants belonging to the genus Salsola (Family: Chenopodiaceae) are common in the arid and semiarid regions of our planet with no less than 69 different Salsola species found in Namibia and the Republic of South Africa. This genus is used as a traditional medicine and aqueous extracts of Salsola have been used by Bushmen women as an oral contraceptive. Ingestion of the Namibian shrub Salsola tuberculatiformis Botsch. by pregnant Karakul sheep leads to prolonged gestation and fetal post‐maturity and, as a (...) result, the pelts of the new‐born karakul lambs are worthless. This initiated an investigation into the active agents in the plant, using the terminal enzyme in adrenal corticosteroidogenesis, cytochrome P450‐dependent 11β‐hydroxylase (P450c11), as a bioassay. Although the active fraction, S2, was extremely labile, partial structure determination suggested the presence of synephrine and a highly reactive aziridine. Therefore a more stable analogue, 2‐(4‐acetoxyphenyl)2‐chloro‐N‐methylethylammonium‐chloride (compound A), was synthesised, which, like the active plant extracts, inhibited adrenal steroidogenesis and acted as a contraceptive. In addition, compound A was stabilised by interaction with steroid‐binding globulins in plasma thus enhancing biological activity in vivo. These findings provided explanations for the complex biological effects of the shrub as well as a new insight into the mode of action of chemically labile plant products in vivo. BioEssays 25:612–619, 2003. © 2003 Wiley Periodicals, Inc. (shrink)

In 'Vague Identity: Evans Misunderstood' David Lewis defends Gareth Evans against a widespread misunderstanding of an argument that appeared in his article 'Can There be Vague Objects?'. Lewis takes himself to be 'defending Evans' and not just correcting a mistake; witness his remark that, 'As misunderstood, Evans is a pitiful figure: a "technical philosopher" out of control of his technicalities, taken in by a fallacious proof of an absurd conclusion'. Let me say at the outset that I take Lewis to (...) be exactly right in regarding as a misunderstanding the interpretation of Evans which he exposes as such. On Lewis's account, everything Evans says 'falls into place', and he quotes from a letter that 'settles the matter'. (shrink)

In this article, I present a critical literature study of the theoretical approach of practical theologians in South Africa to our discipline, in honour of Yolanda Dreyer on her 60th birthday. Some of my colleagues' approaches at the universities of Stellenbosch, Free State, Pretoria, Unisa and NWU are discussed. All of them work with practical theological hermeneutics. The basic hermeneutic approach of Daniël Louw is widened with an integrated approach by Richard R. Osmer in which practical theology as a (...) hermeneutic discipline also includes the empirical aspect which the action theory approach has contributed to the discussion. After discussing Louw's basic hermeneutic approach, all the other colleagues who basically accepted Osmer's approach in their publications are discussed. Important and new ground is being broken by contemporary colleagues, including research in public practical theology, without neglecting the focus on Christian congregations, and new work is being done at the grass roots level of African issues in our country. (shrink)

A dictionary definition of Bioethics is, 'the ethics, or moral principles and rules of conduct, of medical and biological research'. This book is an introductory text of just biological and not medical bioethics. It covers the ethics of experimentation, including genetic manipulation, in plants and animals; ethics and biodiversity, ethics and the environment. There is increasing interest in bioethics - both in academia and by the media and the general public. Awareness of bioethics is incorporated into Biological / Environmental Science (...) courses, plus the first dedicated modular courses on bioethics are starting up. Includes case studies Has questions for students Chapters include environmental, animal, agricultural and reproductive ethics as well as a wide range of issues regarding genetic manipulation. (shrink)

A dictionary definition of Bioethics is, 'the ethics, or moral principles and rules of conduct, of medical and biological research'. This book is an introductory text of just biological and not medical bioethics. It covers the ethics of experimentation, including genetic manipulation, in plants and animals; ethics and biodiversity, ethics and the environment. There is increasing interest in bioethics - both in academia and by the media and the general public. Awareness of bioethics is incorporated into Biological / Environmental Science (...) courses, plus the first dedicated modular courses on bioethics are starting up. * Includes case studies * Has questions for students * Chapters include environmental, animal, agricultural and reproductive ethics as well as a wide range of issues regarding genetic manipulation. (shrink)