A new exact quantum mechanical propagator

The authors derive a closed-form expression for the time-dependent propagator for a quantum mechanical particle which is subject to an external force which is the sum of (i) a reflecting half-plane barrier with a straight edge, and (ii) a harmonic force pointing towards a point of the edge. This new addition to the short list of exactly known quantum mechanical Green functions is a simple combination of exponential functions and Fresnel integrals, the arguments of which are combinations of trigonometric function

Acquisition of aspect and aktionsart by children in croatian and french

Our results indicate some differences in the use of aspect between French and Croatian speaking children. In Croatian language children always manage to keep the appropriate aspect, unlike French children. However, the imperfective aspect seems to be better acquired in French children than the perfective aspect. The perfective aspect, the marked form both in French as well as in Croatian, is related to the lexical meaning of the verbs. The acquisition of the Aktionsart in both languages seems to be more a matter of semantics than of morphology. Furthermore, our data suggest the existence of a specific developmental trend in the use of Aktionsart (intensive, iterative and inchoative), which is similar for children speaking Slavic and Romanic languages

Need Not Necessity: Purgatorial Torment and Healing in Medieval and Early Modern Drama

Seeking to expand on the work of Jacque Le Goff in The Birth of Purgatory, this dissertation examines Purgatory and purgatorial suffering on the early modern stage in Britain. Le Goff asserts in The Birth of Purgatory that Purgatory, though a prominent if elusive feature of Christian thinking about the afterlife, seems to have been a perishable rather than an enduring idea (358). I choose to look for those places in the British early modern dramatic imagination where the idea of Purgatory, even when used as a dramatic device or metaphor, managed to endure, even if it never quite flourishes. While it is a dominant belief in medieval Britain, Purgatory serves to bring together a community of believers, strengthening their ties to dead ancestors and to one another (Chapter 2). When belief in Purgatory wanes in Britain and its attendant practices are purged from religious expression during the Reformation, the kinetic energies and symbolic systems that tied together the community of believers does not so easily die away (Chapter 1). All through the Reformation, invective diatribes against Purgatory can be found on stage at the same time that contemporary playwrights are employing Purgatory in ways that connect it to expiation of sin and suffering for love (Chapters 3 and 4). In many instances, ideas about Purgatory are being translated by dramatists, particularly Shakespeare, into dramatic structures that support a specifically Judeo-Christian articulation of Aristotelian catharsis (Chapter 5). Purgatory, as a literary and cultural metaphor, continues to demarcate not only areas of cultural upheaval and uncertainty, but also areas where delimiting practices, of this world and the next, are evolving or being reorganized within dramatic culture. The Lovers\u27 Purgatory and the Cuckold\u27s Purgatory, for example, focus cultural anxieties about fidelity and Reformation anxieties about divorce (Chapter 4). The application of metaphors of purgatorial suffering to both male and female anxieties about romantic relationships provides limits on the social consequences of infidelity and provides a patient coping strategy which in some respects forestalls domestic violence. As metaphor for the love relationship, Purgatory focuses complex discussions about sin, sex, and the heavenly and earthly political structures which regulate intimate relationships. Purgatory\u27s liminal but positive orientation towards heavenly reward focuses representations of suffering so that suffering becomes communal rather than isolating. While they are punished according to their own culpability, no one is alone in either the earthly or otherworldly Purgatory

Telephone-Delivered Cognitive Behavioral Therapy for Insomnia in Patients with Cancer: A Randomized Controlled Trial

This study examined the efficacy and feasibility of a brief telephone-delivered CBT-I (TeleCBT-I) intervention in cancer patients compared to a control group. The study used a randomized controlled trial design. The TeleCBT-I program consisted of a brief four-week CBT-I program adapted for cancer patients. Patients completed assessment measures at pre-treatment, post-treatment and one-month follow-up. Out of 184 patients screened, 39 were randomly assigned, and 35 (TeleCBT-I, n = 19; Control, n = 16) completed pre- and post-treatment measures and were included in the analyses. Compared to control group, the TeleCBT-I group reported decreased insomnia severity symptoms (p \u3c .014), improved sleep quality (p \u3c .023), and reduced dysfunctional beliefs about sleep (p = .039) at post-treatment with sustained treatment effects at one-month follow-up. Sleep measures yielded large effect sizes (Hedges\u27 g, 0.84-2.7). Although the TeleCBT-I group indicated improvements in fatigue, general functioning, physical well-being, functional well-being, and physical quality of life, effects at follow-up were observed only for fatigue, functional well-being and physical quality of life. No effects were found on depression at any of the time points. In terms of feasibility, TeleCBT-I demonstrated high adherence, high homework completion and high overall satisfaction. These results advance the empirical evidence of CBT-I in cancer patients and support the use of telephone-delivered CBT-I to widely disseminate and implement among patients with cancer

Tactical Shapeshifting in Business Modeling

This paper looks at ‘bottom-up’ architecture firms. These firms focus on co-production and participation, as they develop designs that stimulate social change. As such, they are placed in a hybrid position between citizens and governments. The paper identifies four ‘business model tactics’ they utilize in maneuvering between different institutional fields