5,518 research outputs found

    Anomalous isotopic predissociation in the F³Πu(v=1) state of O₂

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    Using a tunable, narrow-bandwidth vacuum-ultraviolet source based on third-harmonic generation from excimer-pumped dye-laser radiation, the F³Πu←X³Σg-(1,0)photoabsorption cross sections of ¹⁶O₂ and ¹⁸O₂ have been recorded in high resolution. Rotational analyses have been performed and the resultant F(v=1) term values fitted to the ³Π Hamiltonian of Brown and Merer [J. Mol. Spectrosc. 74, 488 (1979)]. A large rotationless isotope effect is observed in the F(v=1)predissociation, wherein the Lorentzian linewidth component for ¹⁸O₂ is a factor of ∼50 smaller than the corresponding ¹⁶O₂linewidth. This effect, a consequence of the nonadiabatic rotationless predissociation mechanism, is described using a coupled-channel treatment of the strongly Rydberg-valence-mixed 3Πu states. Significant J, e/f-parity, and sublevel dependencies observed in the isotopic F(v=1) rotational widths are found to derive from an indirect predissociation mechanism involving an accidental degeneracy with the E³Σ−u(v=3) level, itself strongly predissociated by ³Σ−u Rydberg-valence interactions, together with L-uncoupling (rotational) interactions between the Rydberg components of the F and E states. Transitions into the E(v=3) level are observed directly for the first time, specifically in the ¹⁸O₂ spectrumPartial support was provided by an NSF International Opportunities for Scientists and Engineers Program Grant No. INT-9513350, and Visiting Fellowships for G.S. and J.B.W. at the Australian National University

    Flying Raggedy

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    Assessing Biased Attitudes Towards Clients with Cluster B Personality Disorder: A Literature Review

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    This original contribution to practice explores the significance of clinician biases and countertransference in assessing, diagnosing, and treating Cluster B personality disorders (Cluster B PD). An extensive literature review examines research on defining Cluster B PD (e.g., Antisocial, Borderline, Narcissistic, and Histrionic), current evidence-based treatments, barriers to treatment, stigma related to overall mental health and to Cluster B PD, gender and culture bias, countertransference, and burnout. Further, a qualitative study examined the experiences of licensed psychologists and student trainees under the supervision of licensed psychologists to answer the following research questions: What are the experiences of psychologist working with Cluster B PD? From their perspective, what challenges and/or barriers do they encounter? How do they overcome these challenges and/or barriers? A total of 15 participants responded to a questionnaire discussing their experience. Data analysis revealed clinicians personally experiencing challenges and treatment interfering behaviors from their patients. Many participants spoke about personally experiencing countertransference while working with this population and that it has impacted their therapeutic relationship with patients. To overcome these challenges and barriers, the participants emphasized the importance of consultation, supervision, continuing education, awareness of own biases and the significance of self-care

    他臓器癌の現病歴あるいは既往歴が大腸腫瘍の危険因子となるか?大腸内視鏡検査を行った患者を対象にした解析結果

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    We present an algorithm for computing one-dimensional stable and unstable manifolds of saddle periodic orbits in a, Poincaré section. The computation is set up as a, boundary value problem by restricting both end points of orbit segments to the section. Starting from the periodic orbit itself, we use collocation routines from AUTO to continue the solutions of the boundary value problem such that one end point of the orbit segment varies along a part of the manifold that was already computed. In this way, the other end point of the orbit segment traces out a new piece of the manifold. As opposed to standard methods that use shooting to compute the Poincaré map as the kth return map, our approach defines the Poincaré map as the solution of a boundary value problem. This enables us to compute global manifolds through points where the flow is tangent to the section - a situation that is typically encountered unless one is dealing with a periodically forced system. Another major advantage of our approach is that it deals effectively with the problem of extreme sensitivity of the Poincaré map to its argument, which is a typical feature in the important class of slow-fast systems. We illustrate and test our algorithm by computing stable and unstable manifolds for three examples: the forced Van der Pol oscillator, a model of a semiconductor laser with optical injection, and a slow-fast chemical oscillator. All examples are accompanied by animations demonstrating how the manifolds grow during the computation. © 2005 Society for Industrial and Applied Mathematics

    Computing one-dimensional stable manifolds of planar maps without the inverse

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    We present an algorithm to compute the one-dimensional stable manifold of a saddle point for a planar map. In contrast to current standard techniques, here it is not necessary to know the inverse or approximate it, for example, by using Newton's method. Rather than using the inverse, the manifold is grown starting from the linear eigenspace near the saddle point by adding a point that maps back onto an earlier segment of the stable manifold. The performance of the algorithm is compared to other methods using an example in which the inverse map is known explicitly. The strength of our method is illustrated with examples of noninvertible maps, where the stable set may consist of many different pieces, and with a piecewise-smooth model of an interrupted cutting process. The algorithm has been implemented for use in the DsTool environment and is available for download with this paper

    Incorporation of article 5, 12 and 13 of UN Convention on the rights of persons with disabilities into notariate law of the Republic of Latvia

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    United Nations (hereafter – UN) adopted the Convention on the Rights of the Persons with Disabilities (hereafter – CRPD) on 13 December 2006, and this is the first international human rights treaty which EU joined as a party (in 2010), according to Article 37 of Treaty on European Union. CRPD gives the rights and voice to persons with disabilities in all areas of life, therefore setting the obligation for CRPD States to provide possibility for persons with disabilities to use their rights. As CRPD is relatively new treaty, there are not enough scholarly articles, especially on the Notariate law of Republic of Latvia in the relationship with the CRPD. The lack of consistent research results in lack of consistent rights of persons with disabilities. Therefore more researches are needed. The research aim is to investigate whether the Articles 86 (rights to be witnesses) and 94 (rights to be a party) of Latvian law fulfill the rights of persons with disabilities set in Articles 5, 12 and 13 of CRPD. There are four research methods used in the research: grammatical method; systematical method; historical method; theological method. In order to inquire how the practical implementation is made, the interviews with representatives of Baltic notary systems were made. Additionally comparative approach was used to compare Notariate laws of all three Baltic States. During the analyses of Notariate law of the Republic of Latvia it was concluded that the current version of Notariate law does not reflect equality principle of CRPD as unequal attitude is stipulated between persons with mental/ sensor disabilities and persons without disabilities and persons with other type disabilities regarding the rights to be witnesses and rights to be parties. Additionally the terminology used in Notariate law regarding persons with sensor/ mental disability is insulting and thus does not reflect CRPD terminology. The rights of persons with mental disabilities are limited the most, also in other procedural laws – Civil procedure law and Administrative procedure law of the Republic of Latvia – when active legal capacity can be deprived regarding the rights to be witnesses in proceedings. Therefore it is possible to agree with UN that Article 12 of CRPD is the most challenging. Thus it is necessary to make amendments in Notariate law of the Republic of Latvia to reflect better CRPD principles, especially equality principle which is one of the cornerstones of the European Union.http://www.ester.ee/record=b4578773*es

    Concealment, communication and stigma: The perspectives of HIV-positive immigrant Black African men and their partners living in the United Kingdom

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    This study explored the perspectives of Black men, originally from East Africa, living in the United Kingdom and their families on what it means to live with diagnosed HIV. This article reports on concealment of HIV-positive status as a strategy adopted by the affected participants to manage the flow of information about their HIV-positive status. Analysis of the data, collected using in-depth interviews involving 23 participants, found widespread selective concealment of HIV-positive status. However, a few respondents had ‘come out’ publicly about their condition. HIV prevention initiatives should recognise concealment as a vital strategy in managing communication about one’s HIV-positive status
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