Bioengineering and Bioinformatics Summer Institutes: meeting modern challenges in undergraduate summer research

Summer undergraduate research programs in science and engineering facilitate research progress for faculty and provide a close-ended research experience for students, which can prepare them for careers in industry, medicine, and academia. However, ensuring these outcomes is a challenge when the students arrive ill-prepared for substantive research or if projects are ill-defined or impractical for a typical 10-wk summer. We describe how the new Bioengineering and Bioinformatics Summer Institutes (BBSI), developed in response to a call for proposals by the National Institutes of Health (NIH) and the National Science Foundation (NSF), provide an impetus for the enhancement of traditional undergraduate research experiences with intense didactic training in particular skills and technologies. Such didactic components provide highly focused and qualified students for summer research with the goal of ensuring increased student satisfaction with research and mentor satisfaction with student productivity. As an example, we focus on our experiences with the Penn State Biomaterials and Bionanotechnology Summer Institute (PSU-BBSI), which trains undergraduates in core technologies in surface characterization, computational modeling, cell biology, and fabrication to prepare them for student-centered research projects in the role of materials in guiding cell biology.     

丹尼尔论远程教育基础(下)

该文考查了远程教育的基础,它的发展历史和它赖以发展进化的技术。历史上有两种传统的远程教育:远程课堂教学和函授教学。它们具有不同的教育学特征和成本结构。然而,新一代技术即知识媒体,作为计算机技术、电子通信技术和认知科学汇同结合的产物,正在将远程教育的两大传统结合在一起。知识媒体将通过进一步发展远程教育对大学的革新作出重大贡献。     

Values as protective factors against violent behavior in Jewish and Arab high schools in Israel

This study tested the hypothesis that values, abstract goals serving as guiding life principles, become relatively important predictors of adolescents' self-reported violent behavior in school environments in which violence is relatively common. The study employed a students-nested-in-schools design. Arab and Jewish adolescents ( N = 907, M age = 16.8), attending 33 Israeli schools, reported their values and their own violent behavior. Power values correlated positively, and universalism and conformity correlated negatively with self-reported violent behavior, accounting for 12% of the variance in violent behavior, whereas school membership accounted for 6% of the variance. In schools in which violence was more common, power values' relationship with adolescents' self-reported violence was especially positive, and the relationship of universalism with self-reported violence was especially negative.     

Automatic conceptual encoding of printed verbal material: Assessment of population differences

The release from proactive interference task was used to investigate categorical encoding of animal and clothing items with fourth grade low-socioeconomic status black and middle-socioeconomic status white children. The print mode of verbal presentation and an ordered recall requirement were used in order to provide hospitable conditions for the detection of population differences. The results indicated parity in buildup and release from proactive interference for the two populations. The results of this study, consistent with previous estimates of release from proactive interference for these groups (e.g., D. W. Kee & L. Helfend, Journal of Educational Psychology, 1977, 69, 344–348; S. Y. Nakayama & D. W. Kee, Journal of Educational Psychology, 1980, 72, 386–393), indicate that low-socioeconomic status black and middle-socioeconomic white children do not differ in automatic conceptual encoding. Conceptual encoding differences, however, have been detected between these populations when the free recall method has been used. Thus, discussion of the present results includes a consideration of factors which may be responsible for population differences in free recall performance and preliminary evidence on this issue is provided.     

Temporal coding in conditioned inhibition: Retardation tests

Two lick suppression experiments with rats were conducted in order to determine the nature of the temporal information that is encoded as a result of Pavlovian conditioned inhibition training (conditioned stimulus {CS} A→unconditioned stimulus {US}/AX→noUS). After inhibition training, the conditioned inhibitor (X) was paired with the US in order to measure inhibition, as assessed through retarded behavioral control by CS X. Three temporal relationships were manipulated: the A-US interval, the X-A interval of inhibition training, and the X-US interval of the retardation test pairings. Retardation was greatest when the X-US temporal relationship matched the time at which the US was expected (but not delivered) on the X-A inhibition training trials. Thus, the present experiments provide evidence with retardation tests that, during conditioned inhibition training, subjects encode the temporal location of the omitted US relative to the inhibitory CS. These findings complement those of previous studies using summation tests of conditioned inhibition (Barnet & Miller, 1996; Denniston, Blaisdell, á Miller, 1998; Denniston, Cole, & Miller, 1998).     

Problem solving in Swedish mathematics textbooks for upper secondary school

The aim of this study is to analyse how mathematical problem solving is represented in mathematical textbooks for Swedish upper secondary school. The analysis comprises dominating Swedish textbook series, and relates to uncovering (a) the quantity of tasks that are actually mathematical problems, (b) their location in the chapter, (c) their difficulty level, and (d) their context. Based on an analysis of 5,722 tasks from the area of calculus, it is concluded that the textbooks themselves contain very few tasks that can be defined as mathematical problems, and that those that are mathematical problems are found at the end of a chapter at the most difficult level, and are presented in a pure mathematical context. Implications are discussed.     

Is Visually Guided Reaching in Early Infancy a Myth?

The issue examined was whether infants require sight of their hand when first beginning to reach for, contact, and grasp objects. 7 infants were repeatedly tested between 6 and 25 weeks of age. Each session consisted of 8 trials of objects presented in the light and 8 trials of glowing or sounding objects in complete darkness. Infants first contacted the object in both conditions at comparable ages (mean age for light, 12.3 weeks, and for dark, 11.9 weeks). Infants first grasped the object in the light at 16.0 weeks and in the dark at 14.7 weeks, a nonsignificant difference. Once contact was observed, infants continued to touch and grasp the objects in both light and dark throughout all sessions. Because infants could not see their hand or arm in the dark, their early success in contacting the glowing and sounding objects indicates that proprioceptive cues, not sight of the limb, guided their early reaching. Reaching in the light developed in parallel with reaching in the dark, suggesting that visual guidance of the hand is not necessary to achieve object contact either at the onset of successful reaching or in the succeeding weeks.     

LANGUAGE IN CONSULTATION: THE EFFECT OF AFFECT AND VERB TENSE

This study was an exploration of school consultation interactions between instructional consultants and consultees. Of specific interest was how consultants (n = 18) and consultees (n = 18) used verb tense and emotion words during the problem identification and analysis instructional consultation stage, similarities and differences in communication patterns, and whether verb tense and emotion words were related to perceptions of collaboration, consultee outcomes, or client outcomes. Data provided mixed support for study hypotheses. Among the findings, consultants’ past tense verb use negatively correlated with the consultation relationship (r = ?.62, p = .01), consultees’ present tense use correlated with better consultee outcomes (r = .49, p = .05), and positive emotion word use by consultees was correlated with better consultee outcomes (r = .54, p = .05). Implications of these and other findings are explored in the context of interpersonal communication during school consultation.     

The relationship between life goals and fields of study among young European graduates

This paper analyses the relationships among life goals, job prospects and fields of study for a sample of young European higher education graduates. The results show that there is a characteristic pattern for each field of study with regard to the variables used. Graduates in a given field have similar life goals and job prospects, as well as a similar educational and social background, irrespective of cultural and labour market differences associated with their country of residence.