Uber Stearins?ure-Bestimmungen

Ohne ZusammenfassungMitteilung aus dem chemisch-technischen Laboratorium der Universität Basel.     

Program decision logic optimization using predication and controlspeculation

The mainstream arrival of predication, a means other than branching of selecting instructions for execution, has required compiler architects to reformulate fundamental analyses and transformations. Traditionally, the compiler has generated branches straightforwardly to implement control flow designed by the programmer and has then performed sophisticated "global" optimizations. to move and optimize code around them. In this model, the inherent tie between the control state of the program and the location of the single instruction pointer serialized run-time evaluation of control and limited the extent to which the compiler could optimize the control structure of the program (without extensive code replication). Predication provides a means of control independent of branches and instruction fetch location, freeing both compiler and architecture from these restrictions; effective compilation of predicated code, however requires sophisticated understanding of the program's control structure. This paper explores a representational technique which, through direct code analysis, maps the program's control component into a canonical database, a reduced ordered binary decision diagram (ROBDD), which fully enables the compiler to utilize and manipulate predication. This abstraction is then applied to optimize the program's control component, transforming it into a form more amenable to instruction level parallel (ILP) execution     

Semantic, phonological, and perceptual changes following left and right intracarotid injection (Wada) with a low amytal dosage

Intracarotid injection of a low dosage of amobarbital (75 mg, 5% solution) was studied in 30 temporal lobectomy candidates while naming achromatic, incongruously, and congruously colored pictorial objects and reading real, nonsense, and embedded words. Semantic errors and phonological alexia followed the left injection, while the right injection induced visuoperceptual errors. When the contralateral hemisphere was anesthetized, the left brain formulated supraordinate categories for words and objects, while the right brain applied concrete labels. The basic language proficiency of patients influenced recovery and outcome; left temporal patients who were interictally anomic performed especially poorly after both injections. Codifying phonological and perceptual changes during the intracarotid amobarbital procedure can improve interpretations about language laterality and organization.     

What's wrong with believing in repression?: A review for legal professionals.

Some courts in recent years have tarnished their credibility by willingly and blindly adopting the theory of repressed memory. Such acceptance can destroy the reputations of falsely accused individuals, and, by failing to pay due attention to scientific evidence, gives credence to pseudoscience and demeans the scientific method. This paper was written to inform judges and attorneys about the relevant evidence, which shows that: (a) the concepts of repressed and recovered memory are not generally accepted in the psychological and psychiatric community; (b) the studies cited to support these concepts reveal significant flaws; (c) much empirical evidence has been accumulated against the theory of repression; (d) the studies using the best methodology offer the least support for the repression hypothesis; and (e) there is no evidence that recovered memories accurately reveal the specifics of long-ago events. Repressed- and recovered-memory theory is not supported by science. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Issues related to rural electrification using renewable energy in developing countries of Asia and Pacific

Renewable energy (RE) systems represent the most environmentally friendly and cost-effective means of providing electricity to those living in rural communities or regions in developing countries, however, this has been relatively slow and in many countries the proportion of the rural population supplied with electricity remains low and the proportion supplied with electricity from renewable energy systems is even lower. To understand the causes of this slow progress, a literatures review on renewable rural electrification programs was undertaken. The review suggested a need for better coordination at the national level between those institutions involved in the development and implementation of these programs. This paper compiles and analyse the issues associated with rural electrification in developing countries in Asia and the Pacific. Two case studies of programs are presented, one in Bangladesh and the other in Fiji. Based on the literature review and these two case studies, comments are provided on the policies and strategies required for renewable energy based rural electrification programs.     

Petrous bone tumors: primary non-Hodgkin lymphoma of the inner ear canal and cerebellopontile angle

BACKGROUND: We report about a primary Non-Hodgkin Lymphoma (NHL) of the internal auditory canal. The only previously known manifestations of a NHL in the temporal bone have been infiltrations or hemorrhagic complications due to a late manifestation or advanced systemic disease. Involvement of both temporal bones is typical. CLINICAL CASE: The 60-year-old female patient complained of an acute one-sided deafness, accompanied by a high-pitched tinnitus, rotating vertigo, and paralysis of the left half of the face. RESULTS: We found a deafness in the left ear, spontaneous nystaxis, which was interpreted as a deficiency in excitement of the vestibular organ, and a complete peripheral facial paralysis. Diagnostic imaging studies revealed a large, intrameatal solid mass in the temporal bone, measuring 1.2 x 0.8 cm. Histologic examination after translabyrinthine tumor removal demonstrated a centroblastic Non-Hodgkin Lymphoma. The following extensive interdisciplinary staging examination showed no other tumor manifestations; the CSF analysis was negative. CONCLUSIONS: The uniqueness of this case lies in the detection of a primary nongeneralized centroblastic lymphoma of the internal auditory canal. In contrast to infiltrations of systemic NHL in the same location, in which the advanced disease is responsible for the bad prognosis, this isolated lymphoma of the internal auditory canal seems analogous to extranodal MALT Lymphomas with a better prognosis. The primary extranodal NHL of the temporal bone, not reported in previous studies, is discussed with regard to clinical symptoms, differential diagnoses, and therapeutic strategies.