Simulation of Circuit of Autodyne Sensor with Field-Controlled Transistor

The autodyne sensor operation modelling was carried out. Authors took into account frequency dependence of the field transistor parameters. The shape and a spectrum of generated oscillations in control points of the autodyne sensor circuit were researched, depending on position of an operating point of the transistor. It is revealed, that a condition of the least distortion of the generated oscillations shape is position of a working point of the transistor in the region of camber of its transfer characteristic. Modelling was carried out with Micro-Cap application     

西九文化区

正OMA发展西九文化区,必须面对一项挑战:将一个盛载政府极大抱负,以及持分者多元利益的超大型多用途项目,转化成一个既有趣又严肃、既有规划又允许即兴、既中国化又国际化的文化区。这个文化区规模庞大,但不失亲密融洽的感觉;富地标性,但十分谦和;容易理解,却能带来惊喜。为避免造成过分冲击,OMA采纳了一种每个香港市民都熟悉的建筑类型作为方案的发展     

Peripheral inflammation undermines the plasticity of the isolated spinal cord.

Peripheral capsaicin treatment induces molecular changes that sensitize the responses of nociceptive neurons in the spinal dorsal horn. The current studies demonstrate that capsaicin also undermines the adaptive plasticity of the spinal cord, rendering the system incapable of learning a simple instrumental task. In these studies, male rats are transected at the second thoracic vertebra and are tested 24 to 48 hours later. During testing, subjects receive shock to one hindleg when it is extended (controllable stimulation). Rats quickly learn to maintain the leg in a flexed position. Rats that have been injected with capsaicin (1% or 3%) in the hindpaw fail to learn, even when tested on the leg contralateral to the injection. This learning deficit lasts at least 24 hours. Interestingly, training with controllable electrical stimulation prior to capsaicin administration protects the spinal cord against the maladaptive effects. Rats pretrained with controllable stimulation do not display a learning deficit or tactile allodynia. Moreover, controllable stimulation, combined with naltrexone, reverses the capsaicin-induced deficit. These data suggest that peripheral inflammation, accompanying spinal cord injuries, might have an adverse effect on recovery. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cognitive–behavioral therapy to reduce weight concerns improves smoking cessation outcome in weight-concerned women.

Women smokers concerned about weight gain (N?=?219) were randomly assigned to 1 of 3 adjunct treatments accompanying group smoking cessation counseling: (a) behavioral weight control to prevent weight gain (weight control); (b) cognitive–behavioral therapy (CBT) to directly reduce weight concern, in which dieting was discouraged; and (c) standard counseling alone (standard), in which weight gain was not explicitly addressed. Ten sessions were conducted over 7 weeks, and no medication was provided. Continuous abstinence was significantly higher at posttreatment and at 6 and 12 months of follow-up for CBT (56%, 28%, and 21%, respectively), but not for weight control (44%, 18%, and 13%, respectively), relative to standard (31%, 12%, and 9%, respectively). However, weight control, and to a lesser extent CBT, was associated with attenuation of negative mood after quitting. Prequit body mass index, but not change in weight or in weight concerns postquit, predicted cessation outcome at 1 year. In sum, CBT to reduce weight concerns, but not behavioral weight control counseling to prevent weight gain, improves smoking cessation outcome in weight-concerned women. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Green function for a layer with rigidly fixed bases

The Green function for a layer with rigidly fixed bases is constructed by using the two-dimensional Fourier integral transformation. The singular part is presented in the closed form. The terms taking into account the influence of the boundaries of the layer are presented in the form of improper integrals of exponentially decreasing functions. The numerical analysis is performed for one component of the Green matrix under the action of a concentrated force at a point of the layer noncentral across the thickness. __________ Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 44, No. 4, pp. 39–42, July–August, 2008.     

The Symbiotic Sustainability Model: Conceptualizing NGO–Corporate Alliance Communication

We introduce the Symbiotic Sustainability Model (SSM) as a macrolevel explanation of nongovernmental organization (NGO)–corporate alliances. The SSM presents NGO–corporate alliances as distinct interorganizational communication relationships, symbolized to stakeholders to influence the mobilization of capital. We contend that alliance partners communicatively co‐construct the alliance with stakeholders in order to mobilize economic, social, cultural, and political capital. By focusing on the communication of alliances' existence and character, new propositions emerge concerning the role of communication, capital mobilization resulting from NGO–corporate alliances, NGOs and corporations' choice(s) of alliance partner(s), the number of partners with whom organizations are likely to communicate, and potential risks and rewards. The model is illustrated using the Rainforest Alliance and Chiquita Better Banana program as an abbreviated case study.     

Accelerating the coping process.

On the basis of previous work, freshmen should evidence improved health after writing about their thoughts and feelings associated with entering college. One hundred thirty subjects were assigned to write either about coming to college or about superficial topics for 20 min on 3 days. One fourth of the subjects in each group wrote during the 1st, 5th, 9th, or 14th week of classes. Physician visits for illness in the months after writing were lower for the experimental than for the control subjects. Self-reports of homesickness and anxiety were higher in the experimental group 2–3 months after writing. By year's end, experimental subjects were either superior or similar to control subjects in grade average and in positive moods. No effects emerged as a function of when people wrote, suggesting that the coping process can be accelerated. Implications for comparing insight treatments with catharsis and for distinguishing between objective and self-report indicators of distress are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Ovarian steroid manipulation of the antidipsogenic and thermogenic responses of rats to central administration of prostaglandin E?.

A study by the 1st and 4th authors (1983) showed that intracerebroventricular (icv) injection of prostaglandin E? (PGE?) increased arterial pressure, suppressed water intake, and elevated the core temperature of rats. Treatment of ovariectomized (OVX) rats with estradiol or progesterone resulted in an attenuation of the pressor response to PGE?. The present study examined the effects of daily subcutaneous injection of estradiol benzoate (1 μg), progesterone (5 mg), or oil vehicle on the antidipsogenic and thermogenic response to icv PGE? of OVX Long-Evans rats. The change of core temperature induced by the PGE treatment was significantly correlated with antidipsogenesis for OVX Ss receiving daily oil injections. Although neither the suppression of water intake nor the increase of core temperature in response to icv PGE? was significantly affected by ovarian steroid treatment, the linear relation between the thermogenic and antidisogenic actions of the icv PGE? was abolished by either estradiol or progesterone administration. Thus, although the pressor, antidipsogenic, and thermogenic effects of icv PGE? tend to occur together, they may be differentially affected by ovarian steroid administration, suggesting that the mechanisms underlying these varied effects of icv PGE? may be independent. (12 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)