电子商务实验课程的设计

对电子商务实验的开设问题提出以课程需要、应用需要以及以基本技能训练和学生创造性能力培养两方面切入实验内容的安排 ,并提供了一个实验安排的样本     

关于反腐败斗争的几点思考

腐败的表现是多方面的。主要表现在经济活动、组织人事、执纪执法、生活作风、结交朋友、亲属管理等方面。产生腐败的原因是复杂的 ,主要有攀比心理、侥幸心理、从众心理、拜金心理。我们应采取加强教育、依靠法制、搞好监督等措施 ,将反腐败斗争进行到底。     

EFFECTS OF DIFFERENT CONCENTRATIONS OF ANTISENSE OLIGODEOXYNUCLEOTIDES(ASODN) ON HUMAN PANCREATIC CANCER CELL LINE PaTu8988s

ＩＮＴＲＯＤＵＣＴＩＯＮＡｎｔｉｓｅｎｓｅｏｌｉｇｏｄｅｏｘｙｎｕｃｌｅｏｔｉｄｅｓ (ＡＳＯＤＮ )ｃａｎｉｎｈｉｂｉｔｔｒａｎｓｃｒｉｐｔｉｏｎａｎｄｉｎｔｅｒｆｅｒｅｗｉｔｈｓｐｅ ｃｉａｌｇｅｎｅｅｘｐｒｅｓｓｉｏｎ .ＡｆｉｘｅｄｐｏｉｎｔｏｎｔｈｅＫ ｒａｓｇｅｎｅｗｉｔｈｈｉｇｈｍｕｔａｔｉｏｎｒａｔｅｉｎｐａｎｃｒｅａｔｉｃｃａｒｃｉ ｎｏｍａｏｆｆｅｒｓａｎｉｎｔｒａｃｅｌｌｕｌａｒｔａｒｇｅｔｆｏｒｐａｎｃｒｅａｔｉｃｃａｒｃｉｎｏｍａｇｅｎｅｔｈｅｒａｐｙｗｉｔｈＡＳＯＤＮ (Ｃａｉ…     

Signal constellations in the hyperbolic plane: A proposal for new communication systems

Signal constellations in the hyperbolic plane are provided as an alternative to traditional signal constellations in the Euclidean plane, since channels may actually exist for which the latter signal constellations are not as suitable as the former. A hyperbolic gaussian probability density function, based solely on geometrical considerations, is derived to determine the performance of the hyperbolic signal constellations. Benefits result from an approach conceived in terms of reduced signal-to-noise ratio, needed to achieve a prescribed error rate and equivalent optimum receiver complexity.     

Cross-over, thresholds, and interactions between science and technology: lessons for less-developed countries

Presently, science is an important precondition for the economic development of less-developed countries. This paper discusses the specific roles that science has at initial stages of development, pointing to its contributions for the countries’ absorptive capability. Furthermore, this paper specifies the role of science for initiating a positive interaction with technological development, since initial stages of development and during catching up processes. For less-developed countries, neither the linear model of technology nor an “inverted linear model” would take place: a more interactive approach is necessary for development. Using statistics of patents (USPTO) and scientific papers (ISI) for 120 countries (1974, 1982, 1990, and 1998), this paper analyses some evidences on thresholds levels of scientific production to originate an interactive relationship between science and technology. These data also document that the value of this threshold seems to double from one period to another. Although this paper presents tentative results, some policy implications are discussed: scientific institutional building must be seen as a component of modern industrial policies.     

Portuguese science teachers' education,attitudes, and practice relative to the issue of alternative conceptions

Many studies have shown that students of all school levels hold alternative conceptions that differ from the scientific conceptions transmitted by the school. These results raise some questions about the efficacy of traditional teaching and stress the need for using teaching strategies that explicitly take into account the alternative conceptions that students bring to the science classes. This issue has recently been raised and widely discussed throughout Portugal and the proposals for the new science syllabuses advise teachers to take it into account. However, the number of studies investigating both the teachers' attitudes towards this issue and the use of teaching strategies based on students' alternative conceptions is very limited. This article aims to present the results obtained from science teachers about their attitudes towards students' alternative conceptions and the use of teaching strategies based on these conceptions. The results may contribute to the planning of in-service courses.     

Paternal Sensitivity and Children’s Cognitive and Socioemotional Outcomes: A Meta-Analytic Review

In a series of meta-analyses, paternal sensitivity was associated with children’s (age range: 7 months–9 years) overall cognitive functioning (N = 3,193; k = 23; r = .19), including language skills (k = 9; r = .21), cognitive ability (k = 9; r = .18), and executive function (k = 8; r = .19). Paternal sensitivity was not associated with children’s overall socioemotional functioning (N = 2,924; k = 24; r = −.03) or internalizing problems, but it was associated with children’s emotion regulation (k = 7; r = .22) and externalizing problems (k = 19; r = −.08). In the broad cognitive functioning, executive function, broad socioemotional functioning, and externalizing problems meta-analyses, child age was a significant moderator.     

The Impact of Advancement Via Individual Determination on the College Readiness of First-Generation Hispanic Students in an Urban South Texas High School

The Urban Review - This study examined the phenomenon of college readiness in Hispanic first-generation college students. The purpose of this study was to determine if a relationship exists between...     

Support services for higher degree research students: a survey of three Australian universities

A survey was conducted across three Australian universities to identify the types and format of support services available for higher degree research (HDR, or MA and Ph.D.) students. The services were classified with regards to availability, location and accessibility. A comparative tool was developed to help institutions categorise their services in terms of academic, administrative, social and settlement, language and miscellaneous (other) supports. All three universities showed similarities in the type of academic support services offered, while differing in social and settlement and language support services in terms of the location and the level of accessibility of these services. The study also examined the specific support services available for culturally and linguistically diverse (CALD) students. The three universities differed in their emphases in catering to CALD needs, with their allocation of resources reflecting these differences. The organisation of these services within the universities was further assessed to determine possible factors that may influence the effective delivery of these services, by considering HDR and CALD student specific issues. The findings and tools developed by this study may be useful to HDR supervisors and university administrators in identifying key support services to better improve outcomes for the HDR students and universities.