This volume presents the lecture notes of short courses given by three leading experts in mathematical logic at the 2012 Asian Initiative for Infinity Logic Summer School. The major topics cover set-theoretic forcing, higher recursion theory, and applications of set theory to C*-algebra. This volume offers a wide spectrum of ideas and techniques introduced in contemporary research in the field of mathematical logic to students, researchers and mathematicians.

This volume is based on the talks given at the Workshop on Infinity and Truth held at the Institute for Mathematical Sciences, National University of Singapore, from 25 to 29 July 2011. The chapters are by leading experts in mathematical and philosophical logic that examine various aspects of the foundations of mathematics. The theme of the volume focuses on two basic foundational questions: (i) What is the nature of mathematical truth and how does one resolve questions that are formally unsolvable (...) within the Zermelo Fraenkel Set Theory with the Axiom of Choice, and (ii) Do the discoveries in mathematics provide evidence favoring one philosophical view over others? These issues are discussed from the vantage point of recent progresses in foundational studies. The final chapter features questions proposed by the participants of the Workshop that will drive foundational research. The wide range of topics covered here will be of benefit to students, researchers and mathematicians interested in the foundations of mathematics. (shrink)

We study the jump hierarchy of d.c.e. Turing degrees and show that there exists a high d.c.e. degree d which does not bound any minimal pair of d.c.e. degrees.

PurposeThis study aims to describe the adverse events following immunization of SARS-CoV-2 vaccination in cancer patients/survivors associated with their psychological distress.MethodsA cross-sectional study was conducted to assess AEFIs after the receipt of SARS-CoV-2 vaccines in cancer patients/survivors attending a university hospital in Malaysia. Psychological distress was measured using the Hospital Anxiety and Depression Scale before and after the first and second doses of COVID-19 vaccine.ResultsA total of 217 complete responses were received. Compared with before vaccination, both HADS Anxiety and HADS (...) Depression scores were significantly reduced after the first and second dose of the SARS-CoV-2 vaccine. Most of the participants had mild-or-moderate systemic and local AEFIs, with the most common being pain at the injection site, tiredness, and headache for both the first and second doses of the vaccine. Positive correlations between the total AEFI score and HADS-A and HADS-D scores were observed after the first dose of the SARS-CoV-2 vaccine. Similarly, positive associations were observed between the total AEFI score and HADS-A and HADS-D scores after the second dose of the SARS-CoV-2 vaccine.ConclusionMild-to-moderate AEFIs found in this study help address vaccine hesitancy in cancer patients/survivors. Receiving the SARS-CoV-2 vaccine had a positive effect on decreasing psychological distress in cancer patients/survivors. High severity of an AEFI was associated with higher anxiety and depressive symptoms. (shrink)

BackgroundThe cognitive level of post-stroke aphasia patients is generally lower than non-aphasia patients, and cognitive impairment affects the outcome of stroke. However, for different types of PSA, what kind of cognitive assessment methods to choose is not completely clear. We investigated the Montreal Cognitive Assessment, the Mini-Mental State Examination, and the Non-language-based Cognitive Assessment to observe the evaluation effect of CI in patients with fluent aphasia and non-fluent aphasia.Methods92 stroke patients were included in this study. Demographic and clinical data of (...) the stroke group were documented. The language and cognition were evaluated by Western Aphasia Battery, MoCA, MMSE, and NLCA. PSA were divided into FA and NFA according to the Chinese aphasia fluency characteristic scale. Pearson’s product–moment correlation coefficient test and multiple linear regression analysis were performed to explore the relationship between the sub-items of WAB and cognitive scores. The classification rate of CI was tested by Pearson’s Chi-square test or Fisher’s exact test.ResultsThe scores of aphasia quotient, MoCA, MMSE, and NLCA in NFA were lower than FA. AQ was positively correlated with MoCA, MMSE, and NLCA scores. Stepwise multiple linear regression analysis suggested that naming explained 70.7% of variance of MoCA and 79.9% of variance of MMSE; comprehension explained 46.7% of variance of NLCA. In the same type of PSA, there was no significant difference in the classification rate. The classification rate of CI in NFA by MoCA and MMSE was higher than that in FA. There was no significant difference in the classification rate of CI between FA and NFA by NLCA.ConclusionMoCA, MMSE, and NLCA can be applied in FA. NLCA is recommended for NFA. (shrink)

A common assumption in the selection of nonhuman animal subjects for research and the approval of research is that, if the risks of a procedure are too great for humans, and if there is a so-called scientific necessity, then it is permissible to use nonhuman animal subjects. I reject the common assumption as neglecting the central ethical issue of the permissibility of using nonhuman animal subjects and as being inconsistent with the principle of justice used in human subjects research ethics. (...) This principle requires that certain classes of individuals not be subjected to a disproportionate share of the burdens or risks of research. I argue for an extension of this principle to nonhuman animal research and show that a prima facie violation of the principle occurs because nonhuman animals bear an overwhelmingly disproportionate share of the risks of research without sufficient justification or reciprocal benefit. (shrink)

What should we do about “tainted” public commemorations? Recent events have highlighted the urgency of reaching a consensus on this question. However, existing discussions appear to be dominated by two naïve opposing views – to remove or preserve them. My aims in this essay are two-fold. First, I argue that the two views are not naïve, but undergirded by concerns with securing self-respect and with the character of our engagement with the past. Second, I offer a qualified defence of vandalising (...) tainted commemorations. The defence comprises two parts. I consider two prominent suggestions – to install counter-commemorations and to add contextualising plaques – and argue that they are typically beset with difficulties. I then argue that in some circumstances, constrained vandalism is a response to tainted commemorations which effectively adjudicates the demands of the two opposing views. (shrink)

Che 1-p'yŏn. Ch'ŏndo wa inbŏp (inbŏpch'ŏn) -- 1. Kodae Chungguk ŭi inbŏpch'ŏn ch'ŏrhak sasang -- 2. Sŏnjin sidae ch'ŏnmyŏnggwan ŭi chŏn'gae -- 3. Sŏnjin sidae chŏnt'ong chaeigwan -- 4. Kunju wa minbon : Sŏnjin sidae kunju, minbollon kwa chŏhang, hyŏngmyŏng sasang -- 5. Ch'ŏndo ŭi naeyong kwa inbŏp ŭi panyŏng - Che 2-p'yŏn. Hangsang kwa pyŏnhwa -- 1. To ŭi hangsangsŏng kwa pyŏnhwasŏng -- 2. Pŏp ŭi hangsangsŏng kwa pyŏnhwasŏng -- 3. Pŏpchesasang hangsang kwa pyŏnhwa -- 4. Ch'im Ka-bon kwa (...) Yang Kye-ch'o ŭi pyŏnbŏmnon pigyo -- Che 3-p'yŏn. P'yŏnghwa ŭi pŏp kwa yebang pŏphak : punjaeng ŭi p'yŏnghwa haegyŏl kwa yebang. (shrink)

A central idea of public reason liberalism is that the exercise of political power is legitimate when supported only by reasons which all citizens accept. Public reason serves as a necessary standard for evaluating the legitimacy of political decisions. In this paper, I examine the directive to employ public reason from the citizens’ perspective. I suggest that employing public reason potentially involves them engaging in different types of compromise. I consider how acknowledging these compromises sheds light on public reason liberalism. (...) Public reason may not offer a necessary standard for evaluating the legitimacy of decisions, and the evaluation it offers may not have great weight relative to other moral and political considerations. (shrink)

本书是一本关于陈冲体验人生感悟人生的书法集子。内容包括:悟道篇;明理篇;做人篇;处世篇等。.

In lieu of an abstract, here is a brief excerpt of the content:Clinical CommentaryChong Siow Ann, Associate ProfessorDr. G appears to experiencing symptoms of schizophrenia, which is arguably the most severe mental disorder and which afflicts about one in a hundred people. This is a psychotic disorder that causes disturbances and distortions in thinking, including neurocognitive impairments, perception and behaviour. There is no cure for this often devastating disorder. Current antipsychotic medications can alleviate some of the symptoms but it often (...) comes at a price as these antipsychotics have burdensome side effects.A feature of this disorder is anosognosia, which is a lack of awareness or “insight” that an illness is present. This lack of insight presents a particular challenge because these individuals would, as in the case of Dr. G, refuse needed treatment as they do not perceive that they are ill. This is not necessarily an all-or-none phenomenon but is rather more complex and multidimensional; there might be an unawareness or recognition on behalf of the patient that they are suffering from a mental illness, the failure to appreciate the necessity of treatment; and/or the inability to recognise and define the psychotic symptoms like unusual thoughts and hallucinations as signs of illness1 and in many instances, all three are present. It is also by no means uncommon. Studies have found that between 60% and 80% of people with schizophrenia lack awareness of their illness to varying degrees.2This phenomenon remains an enigma. Some regard it as a form of psychological defence against the harsh reality of a psychotic illness — awareness of having a chronic and devastating illness might lead to demoralisation, hopelessness and suicide.3 Recent research, however, [End Page 250] indicates that this psychological denial plays a small part, if any, and instead has found an association with certain neuropsychological and neurocognitive deficits,4 as well as functional and structural brain abnormalities in the frontal lobe of the brain.5The prevailing clinical view thus is that this is an intrinsic and organic aspect of the schizophrenic illness which has nothing to do with wilfulness but rather the incapacity to perceive the presence of the illness. Edwin Fuller Torrey, an eminent psychiatrist and executive director of the Stanley Medical Research Foundation, calls anosognosia the “single largest reason why individuals with schizophrenia and bipolar disorder do not take their medications”, and he has remarked that “to keep talking about civil liberty is illogical. Patients are anything but free when they’re at the beck and call of their own delusions”.6It is also this view that it is a product of a brain disorder that some — particularly patients — find unacceptable. At one level, it does not take into context the person’s own experiences, and at a deeper level it calls into question the conception of the self with its capacity to exercise judgements and the autonomy to make decisions.This is a perennial ethical issue in psychiatry when people with severe mental illnesses refuse treatment. This becomes a Catch-22 situation where part of the illness that needs treatment is also preventing any treatment to be given: implicit in the principle of informed consent for treatment is that the person should be aware of the nature and course of their illness and acknowledge the need for treatment. While there are laws for involuntary commitment, the bar is usually high in that there must be a clear and present risk of harm to the person or others. Alan Stone, a professor of law and psychiatry at Harvard University proposed a possible justification for involuntary treatment based on his “thank-you theory” which assumes that patients will become well and subsequently agree that the intervention was in their best interests but research suggests that only half of these patients would admit so.7One suggested mechanism is the use of advance directives — psychiatry’s version of the living will in which people can specify what sort of medical care they would like should they become mentally unwell and unable to exercise appropriate judgement. An intrinsic part of this might include a “Ulysses contract” — just as Ulysess instructed his crew to lash him to the mast of the his ship so that he could... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Underplayed Ethics and the Dilemmas of Psychiatric CareChong Siow Ann and Tamra LysaghtThe practice of psychiatry is fraught with uncertainty. The exact causes and the biological substrates underlying mental disorders remain to be elucidated; even the diagnosis of these disorders is descriptive and not based on an etiological understanding and no biological diagnostic markers have been validated. The manifestation of almost all mental disorders results from a complex interaction (...) of biological and environmental factors which encompasses the patient’s unique life history, experiences and relationship with others and the community. In the face of such uncertainties — at times extending to the types of treatment (psychiatry is generally acknowledged not be an exact science) — it has been argued that adopting a pragmatic approach is necessary.1 Accordingly, this approach necessitates high ethical standards among mental health practitioners.Some mental illnesses are associated with varying degrees and types of cognitive impairments. Others have certain symptoms like auditory hallucinations and delusions that might severely compromise the patients’ autonomy, distort their sense of reality, increase the risk of harm to themselves or others and render them incapable of making informed decisions in their treatment and participation in research.Consequently, there are issues that are particular to the provision of mental healthcare. These include the need for enforced involuntary treatment with the corollary of depriving a patient of his personal liberty even [End Page 173] though it is often justified on the grounds that it is in the patient’s best interests. However, at times, it is the legal and societal obligation of mental health practitioners to protect those who might be harmed from the patient’s action that might seem to be more pressing. In this situation of double agency, lies the tension of providing confidential care for patients and acting as “an agent of the state” where that patient’s confidentiality might be breached and his liberty infringed upon. This situation is further aggravated by the stigma that clings ever so tenaciously to those who suffer from mental disorders and where it is the norm to stereotype them as dangerous and unpredictable.Consideration of a patient’s autonomy is also challenged by characteristics that are unique to the practice of psychiatry. The prescription of certain psychotropic medications can alter how people think and feel, while psychotherapy works towards changing the patient’s views and values. The philosopher, Jennifer Radden, describes this process as “re-forming the patient’s whole self or character … akin to the responsibilities of raising children”.2 The psychotherapeutic relationship is thus particularly personal and intimate because patients are asked to provide information that often reveals their innermost feelings, fears and fantasies. This information is provided on the basis of trust and assurance of confidentiality, and with expectation of being helped.Jeremy Holmes and Gwen Adshead have elaborated on the vulnerability of patients seeking psychotherapy: they might be particularly susceptible to exploitation because their past experiences of being exploited have led to their distress and help seeking — their dependency and the extreme privacy of the therapeutic relationship make any transgression difficult to be uncovered.3 There is a calamitous combination of the “unconscious wish in the patient to be used” with the complicity of an unethical therapist seeking to fulfil his own interests.4As in any other doctor-patient relationship, the relationship between the mental healthcare practitioner and the patient is one of unequal power where the former is ascendant. While that power should be exercised to heal and to relieve suffering, it also gives the practitioner tremendous power “to harm, reject, misunderstand, or exploit patients who struggle with the experience of mental illness, which itself may generate helplessness, despair, distress, and exceptional dependence on the clinician”.5 Given the potential of doing good and harm coupled with the likelihood of being so significant in the life of the patient,6 providing care for those with mental disorders and distress is necessarily ethically exacting — arguably more so than in other medical practice settings. [End Page 174]This precariousness has led to the suggestion that ethics in psychiatry should have a special status and that the more general principles of biomedical ethics are too limited in scope to... (shrink)