Creation of graphene allotropes using patterned defects

Monolithic structures can be built into graphene by the addition and subsequent re-arrangement of carbon atoms. To this end, ad-dimers of carbon are a particularly attractive building block because a number of emerging technologies offer the promise of precisely placing them on carbon surfaces. In concert with the more common Stone-Thrower-Wales defect, repeating patterns can be introduced to create as yet unrealized materials. The idea of building such allotropes out of defects is new, and we demonstrate the technique by constructing two-dimensional carbon allotropes known as haeckelite. We then extend the idea to create a new class of membranic carbon allotropes that we call dimerite, composed exclusively of ad-dimer defects.     

The Decline Of The Political Consensus For Urban Growth: Evidence from Los Angeles

This article explores growth politics in the United States by examining the case of Los Angeles. Recent observers of Los Angeles have noted that growth interests in the city increasingly lack the political coordination to effectively accomplish their projects. One writer has even announced the collapse of the growth machine in the region. Such an assertion is extraordinary, given the power most authors ascribe to growth coalitions and given Los Angeles' strong pro‐growth history. The article presents evidence that the machine has not collapsed, but the political consensus for growth has eroded severely over the past 15 years by a variety of factors. The article then argues that the same general processes that have caused the demise of the growth consensus in Los Angeles are in place in other cities and will likely have similar effects on growth politics there. The article ends by detailing some implications that the end of the growth consensus might have for local politics in the United States.     

Progression into and out of binge drinking among high school students.

The current study examined binge drinking among high school students over an academic year. Adolescent drinkers (N?=?621; 58% female) were grouped into 4 trajectories: drinkers (35%), increasers (14%), decreasers (16%), and persistent binge drinkers (35%). Prospective analyses indicated several factors that predicted escalation and de-escalation of binge drinking. Increasers were more likely to regularly use alcohol and cigarettes at a younger age than drinkers. Compared with decreasers, persistent binge drinkers reported regular alcohol and marijuana use at younger ages. Lower levels of perceived student drinking appeared to be a protective factor for onset of binge drinking. The results highlight the need to study precursors to the naturally occurring fluctuations in binge drinking and suggest factors that may accentuate the risk of binge drinking. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cognitive preoccupation with alcohol and binge drinking in college students: Alcohol-induced priming of the motivation to drink.

This research examined alcohol-induced motivation to drink as a factor that contributes to preoccupation with drinking. Forty undergraduates rated their degree of preoccupation with drinking. The author determined the relationship between the undergraduates' preoccupation and the degree to which alcohol primed their motivation to drink by having them rate their desire for alcohol after they consumed a dose of alcohol or a placebo. Results showed that individual differences in preoccupation were predicted by the priming effects displayed after alcohol was consumed. More preoccupied individuals reported greater priming effects. Priming effects following placebo were minimal and were not related to preoccupation. The research shows that reinforcing effects of alcohol may contribute to cognitive preoccupation with drinking and promote patterns of alcohol abuse. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Evolutionary origins of stigmatization: The functions of social exclusion.

A reconceptualization of stigma is presented that changes the emphasis from the devaluation of an individual's identity to the process by which individuals who satisfy certain criteria come to be excluded from various kinds of social interactions. The authors propose that phenomena currently placed under the general rubric of stigma involve a set of distinct psychological systems designed by natural selection to solve specific problems associated with sociality. In particular, the authors suggest that human beings possess cognitive adaptations designed to cause them to avoid poor social exchange partners, join cooperative groups (for purposes of between-group competition and exploitation), and avoid contact with those who are differentially likely to carry communicable pathogens. The evolutionary view contributes to the current conceptualization of stigma by providing an account of the ultimate function of stigmatization and helping to explain its consensual nature. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

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当信息的控制层和企业层联合起来,你会得到什么?全新的策略性产业信息,以及控制工程师扮演更重要的角色。工厂视频可以帮助控制操作、维护,修理、培训以及工厂作业,来减少停工时间,而带有视频带宽的以太网是一个关键工具。不同于安全应用,工业视频可以为工厂节约一大笔开销,其中包括:     

Updating the WAIS–III and WMS–III: Considerations for research and clinical practice.

The Wechsler Adult Intelligence Scale–Revised (WAIS–R) and the Wechsler Memory Scale–Revised (WMS–R) are the most commonly used intelligence and memory scales in both clinical and neuropsychology. In 1997, updated versions of these instruments (the WAIS–III and WMS–III) were published. Because of the extensive use of the WAIS–R and WMS–R in the field and the body of accumulated research, there is naturally some reluctance by clinicians and researchers to update to the new versions. It is sometimes difficult for clinicians who test individuals on repeated occasions to switch over to the new versions of the scales because of the difficulty of interpreting score discrepancy between the 2 versions. Researchers, especially those conducting longitudinal research, have a similar difficulty in changing measurement devices because of the possible threat to internal validity. This article reviews the substantive revisions of the scales and outlines those issues that users should take into consideration when updating to the new versions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)