关于电大教师尽快适应远程开放教育的思考

在远程开放教育环境下,电大教师要尽快转变观念,完善能力结构,找准教学中的重、难点和突破点,才能适应开放教育对教师的要求.     

One-trial context fear conditioning with immediate shock: The roles of transport and contextual cues

In three experiments, using a total of 120 albino rats, we assessed whether transportation cues might evoke some of the freezing (i.e., defensive immobility) that we see in a context on a day following a footshock given immediately after placement in that context. The results suggested that immediate shock could directly condition strong fear to both simulated and actual transport cues. Although conditioning to transport cues explains some of the freezing that is seen on the test day, it does not explain all of it. We also found evidence that some of the freezing is due to conditioning to permanent features of the context in which the immediate shock is given. The results support a role for transport cues in theories of context conditioning and argue against shock-processing accounts of the conditioning deficit that results from immediate shock.     

Blurring Public and Private: The Pragmatic Desegregation Politics of an Elite Private School in Atlanta

The school desegregation narrative often references historically white public schools as sites of massive resistance and historically white private schools as segregationist academies. Yet some historically white elite private schools or independent schools, such as The Westminster Schools (plural in name only), established in 1951 in Atlanta, Georgia, chose to desegregate. Such elite institutions, which have served as one catalyst for the creation and maintenance of social and cultural capital, became more accessible after Brown v. Board of Education through a combination of private and public decisions galvanized by larger social, political, and federal forces. Westminster's 1965 decision to consider all applicants regardless of race was emblematic of the pragmatic desegregation politics of Atlanta's city leaders during the civil rights movement and a national independent school agenda focused on recruiting black students. Drawing on institutional, local, regional, and national archival records and publications, this article examines the import of schools like Westminster to civic and business leaders, to the politics of race and desegregation occurring in large cities, and to the range of educational opportunities available in metropolitan areas. This examination yields an analysis of the leadership and politics of a southern historically white elite private school that black students desegregated in 1967.     

Prediction and prevention of child abuse and neglect

Utilizing an interview, a questionnaire, and observations during labor, delivery, and the postpartum period, a sample of one hundred mothers was identified as at high risk for abnormal parenting practices. These mothers were randomly divided into a “High-Risk Intervene” group (N=50) and a “High-Risk Nonintervene” group (N=50). The “Intervene” group received comprehensive pediatric follow-up by a single physician, a lay health visitor, and/or a public health nurse in the home. The “Non-intervene” group received routine care, although the results of these screening procedures were shared with the physicians and nurses responsible for their ongoing care. Another group of 50 mothers, who delivered during the same time period and who were assessed as low risk in terms of abnormal parenting practices, served as controls. When the children were approximately two years old (mean age 26.8 months), 25 families in each of the three groups were chosen at random for detailed evaluation.     

The Socio-Cultural Image of Childhood (Based on an Analysis of Soviet and Russian Feature Films about Children)

The current state of childhood research is grounded in classical psychological theories, and Russian psychology is tied to cultural and historical theory in particular. These theories were invented to generalize and make sense of the realities of childhood as they existed at the time when these theories were created. Rapid social changes, especially during recent decades, have led to the emergence of a wide range of sources that bear witness to how the day-to-day life of childhood has changed. The understanding of childhood has continued to transform from one era to another. A metaphor was even coined to describe it, and at some point there was even a specific metaphor coined, “the disappearance of childhood.” This article seeks to explore how the image of childhood has changed in relation to the image of adulthood. As material for analysis, we chose Soviet and Russian movies from the 1940s to 2000s. The study is based on the assumption that a sequential analysis based on Yuri Lotman’s theory of the structure of the text demonstrates how the image of childhood changes over time. If in the 1940s and 1950s the child was presented as immature and not quite grown up, the adult was portrayed as the embodiment of the ideal form of the individual, and the main conflict was structured around childish immaturity, then gradually over the decades more and more main characters who were children and adults were portrayed as different kinds of individuals, and the child (or teenager) sometimes came to embody obviously negative features. The child–adult dichotomy itself lost its significance.     

The use and abuse of metatags

The web creates manyopportunities for encroachment on intellectualproperty including trademarks. Our principaltask in this paper is an investigation into anunusual form of such encroachment: theimproper use of metatags. A metatag is a pieceof HTML code that provides summary informationabout a web page. If used in an appropriatemanner, these metatags can play a legitimaterole in helping consumers locate information. But the ``keyword'' metatag is particularlysusceptible to manipulation. These tags can beeasily abused by web site creators anxious tobait search engines and bring scores ofvisitors to their sites. The law aboutmetatags is far from settled and many legalscholars are uncomfortable with the conclusionthat the unauthorized use of a trademark in ametatag represents infringement. How should weassess this practice known as ``spamdexing'' froma normative perspective? Is it commercial fairplay or something more sinister? We make thecase here that there are salient moral problemswith spamdexing since it exploits thereputational goodwill of trademark owners andconfuses consumers. It violates basic moralduties and it flouts the golden rule principle. Hence unauthorized use of a competitor'strademark in a metatag is not morallyacceptable.     

Unintended consequences on gender diversity of high-tech growth and labor market polarization

There has been considerable media coverage highlighting the lack of gender diversity in Silicon Valley, stressing the relatively low participation of women in the high-tech economy. Austin offers a unique case for testing whether similar gender issues characterized other high-tech regions because the city has historically benefited from the expansion of Silicon Valley’s large high-tech firms since the 1980s. The gender-biased business practices identified in Silicon Valley firms may have been transferred to their branch plants in Austin. Our analysis shows women’s losses in middle-skill occupation employment shares were concentrated in the low-tech industry and were partially offset by job share gains in high-skill occupations in the same sector between 1980 and 2015. Men’s losses in middle-skill occupation job share were also mainly concentrated in the low-tech sector but were partially offset by employment share gains in high-skill occupations only in the high-tech industry during this period. Women made large gains in relative real median wages only in high-skill occupations in the high-tech industry while their relative real median wages in other skill occupations and in the low-tech industry stagnated around zero during this period. Men’s gains in relative median wages were also concentrated only in the high-tech industry but were less than half of women’s and were negative (between ?10 and ?21 percent) in other occupations in the high-tech industry and across all occupations in the low-tech industry. As noted in previous studies, the impact of job polarization is not well understood across sectors and gender. This study finds the high-tech industry in Austin has had unintended consequences in terms of job polarization across gender, providing relatively fewer job opportunities in high-skill occupations to women than men but offering much higher gains in relative real median wages to women than men. Males also found relatively more job opportunities in high-skill occupations in the high-tech industry than women but experienced only half of women’s gains in relative median wages in this industry between 1980 and 2015.     

Managing external knowledge flows: The moderating role of absorptive capacity

In this paper, we argue that those firms with higher levels of absorptive capacity can manage external knowledge flows more efficiently, and stimulate innovative outcomes. We test this contention with a sample of 2265 Spanish firms, drawn from the Community Innovation Surveys (CIS) for 2000 and 2002, produced by the Spanish National Statistics Institute (INE). We find that absorptive capacity is indeed an important source of competitive advantage, especially in sectors characterized by turbulent knowledge and strong intellectual property rights protection. The implications for management practice and policy are also discussed.     

Conceptions of athletic excellence among children and adolescents

Youth in grades 3, 6, 9, and 12 were interviewed about their beliefs regarding athletic excellence. A set of open-ended questions assessed beliefs about the source of athletic ability and the differences between excellent athletes and others. Respondents also rated excellent athletes on a checklist containing various physical, cognitive, emotional, and interpersonal traits. Younger children were less likely than adolescents to differentiate excellent athletes. All participants, but especially adolescents, attributed greater physical skills to highly competent athletes. All but the third graders thought excellent athletes were different from others in terms of cognitive skills (e.g., attention, concentration), and adolescents believed excellent athletes also differed from others in terms of attitudes (e.g., motivation, determination). Older males were more likely to believe that athletic excellence was due to natural ability, whereas older females were more likely to attribute excellence to early social support and facilitation.