RF遍地开花,高速数字电路如今就是RF

实时频谱分析正在多种应用中得到运用,从锁相环和压控振荡器等部件一直到电路板和系统.随着RF渗透到万物之中,部件的开发者们将需要从他们的PL上和VCO中找出尖峰或者毛刺,而且还需要确保器件在电路板级参考设计中能正常工作.RF(射频)除了无所不在之外,在本质上还是一种瞬态过程,因此便带来对实时频谱分析工具的需求.     

Predicting compliance of children with and without developmental delay.

Noncompliance is a common problem exhibited by children with developmental delay (DD; Walker, 1993). The authors evaluated whether performance on the Assessment of Basic Learning Abilities (ABLA) test would predict compliance of children with and without DD to instructions alone (IA) versus instructions with modelling and/or gestures (IMG) administered by their caregivers. The ABLA test uses standard prompting and reinforcement procedures to assess the ease or difficulty with which a testee is able to learn a simple imitation and five two-choice discriminations. Twenty-one children without DD and 16 children with DD were presented with five age-appropriate educational tasks by their respective caregivers in a structured teaching session that included IA on some trials and IMG on others. The ABLA test performance reliably predicted the compliance of the children in the two conditions, and the results were consistent across both groups. The results are important for providing information to caregivers on how best to instruct their children in an effort to increase compliance. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The power of multiple methods and evidence sources: Raising the profile of Canadian counselling psychology research.

In counselling psychology, research and practice are viewed as mutually informative, and Canadian counselling psychologists conduct research in a wide range of areas, utilizing a wide range of research methods. However, there are few Canadian publications that give prominence to counselling psychology scholarly work. Over the past decade, two trends have become more prominent in the practice of counselling psychology: evidence-based practice and outcome-focused intervention. Traditionally, empirical evidence for the efficacy of practice interventions has come from randomized controlled trials. This fails to reflect the diversity of methods and practice that Canadian counselling psychologists utilize. To address this discrepancy, in this article we provide some alternate ways for obtaining empirical support for the predictive efficacy of counselling interventions. We conclude by addressing some challenges currently facing counselling psychologists in Canada (i.e., publication venues, funding for research, the connection between research and practice, preparation of students) and describing some ways for raising the profile of counselling psychology research and practice in Canada. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Contingent time off to increase verbal behavior: A case report.

Describes the case of a withdrawn adolescent male outpatient at a mental health clinic who was instructed to record his own verbal behavior. Consequences were implemented to increase the frequency of verbal responses. S "earned" his way out of the clinic by increasing his verbal behavior to an established criterion performance. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Conceptualizations of novice and experienced counselors.

We examined the conceptualizations of 23 (11 experienced and 12 novice) counselors, with respect to general counseling process and specific client concerns by means of a two-part conceptual mapping task (CMT). Analyses of the CMT data revealed an interaction effect of counselor experience and generality of conceptual task on the extensiveness of counselor conceptualizations. Experienced counselors displayed slightly more extensive conceptualizations on the general CMT and less extensive conceptualizations on the specific CMT. This interaction effect was interpreted as evidence that experienced counselors possess extensive abstract, general knowledge of counseling that they use to conceptualize specific instances of counseling efficiently and parsimoniously. On the other hand, novice counselors, who lack such abstracted knowledge, engage in more extensive, unique conceptual work for each separate client. (PsycINFO Database Record (c) 2010 APA, all rights reserved)