弯曲航道的设计     

甘浪雄彭家敏  谭志荣 《上海海事大学学报》2007,28(1):111-114

较系统地分析航路中弯曲航道的设计要求,详尽地探讨船舶安全航行对航道有效宽度的要求;为解决弯曲航道的设计问题,从确保船舶航行安全的角度,重点分析对航道宽度的要求;分析不同类型弯道的设计方法.  相似文献   

长江经济带沿线区域绿色发展水平的评价与比较     

陈佳敏  霍增辉 《科技管理研究》2020,40(1):244-249

在分析长江经济带流域生态环境的基础上,以我国长江经济带沿边11个省市为研究对象,从产业绿色发展力、资源环境承载力、政府绿色支撑力三个方面构建长江经济带沿线区域绿色发展水平评价体系。对2012-2017年间长江经济带沿线区域绿色发展水平进行相对优劣排序。结果表明,下游地区绿色发展水平总体高于上游以及中游地区。根据各地区发展的相对协调性,将其划分为协调发展型、相对失调型以及低水平滞后型,进而提出政策性建议。  相似文献   

新编健身气功锻炼与健康的研究进展     

符辉  王佳敏  王娟 《湖北体育科技》2011,30(3):280-282

新编健身气功·易筋经、新编健身气功·五禽戏、新编健身气功·六字诀、新编健身气功·八段锦四种健身气功是由国家体育总局组织多学科专家,以严谨、科学、创新的精神,在优秀传统功法易筋经、五禽戏、六字诀、八段锦基础上精编著而成,在继承传统功法的基础上融入现代健身理念.新功法的编创适应了广大群众日益增长的多元体育需求并有助于开展健...  相似文献   

Production of a Science Documentary and its Usefulness in Teaching the Nature of Science: Indirect Experience of How Science Works     

Sun Young Kim  Sang Wook Yi  Eun Hee Cho 《Science & Education》2014,23(5):1197-1216

In this study, we produced a documentary which portrays scientists at work and critically evaluated the use of this film as a teaching tool to help students develop an understanding of the nature of science. The documentary, “Life as a Scientist: People in Love with Caenorhabditis elegans, a Soil Nematode” encompasses the entire process of a scientific investigation by exploring the everyday life of a particular group of scientists. We explored the effectiveness of this documentary in teaching the nature of science by examining the epistemological views of college students toward science before and after viewing. In addition, we collected written responses from the students where they described which aspect of the nature of science they learned from the documentary. The scores of epistemological views toward science increased between the pretest and the posttest (p < 0.01) with the most significant increase being in their views of the role of social negotiation. In the written responses, approximately half of the students suggested that they had learned more about the role which cooperation and collaboration play in the development of scientific knowledge by watching the documentary. The documentary overall provides a valuable instructional context so that students are able to discuss and reflect on various aspects of nature of science within authentic scientific research.  相似文献   

Supply chain information capabilities and performance outcomes: An empirical study of Korean steel suppliers     

Sun Hee Youn  Ma Ga Yang  Jin Hwan Kim  Paul Hong 《International Journal of Information Management》2014

This article discusses how supply chain information capabilities are instrumental to achieve performance outcomes. We identify critical components of supply chain information capabilities in terms of inter-organizational information system capacity and inter-organizational relational competency. In view of the high degree of industry concentration in Korea, this article presents and tests a research model using a sample of Korean steel suppliers. Empirical tests are conducted using the structural equation modeling, PLS (partial least squares). The results of this study suggest that Korean manufacturing (e.g., automobile, shipbuilding, construction, and mobile industries) are heavily influenced by the competitiveness of the steel industry in terms of supply chain information capabilities and performance outcomes—supply chain-level (i.e., supply chain flexibility) and firm-level performance outcomes (i.e., customer responsiveness and cost reductions). Future research may extend the findings of this study in other country contexts to accomplish both customer responsiveness and cost reductions through supply chain information capabilities.  相似文献   

NEIGHBORHOOD SOCIOECONOMIC WELL‐BEING,HOME LITERACY,AND EARLY LITERACY SKILLS OF AT‐RISK PRESCHOOLERS     

John Mark Froiland  Douglas R. Powell  Karen E. Diamond  Seung‐Hee Claire Son 《Psychology in the schools》2013,50(8):755-769

In response to growing research and policy interest in the developmental contexts of early literacy, this study examined relations between neighborhood socioeconomic well‐being, home literacy (parent–child shared reading and number of books at home), and directly assessed early literacy outcomes among 551 Head Start students in the fall of preschool. In Structural Equation Models, neighborhood socioeconomic well‐being predicted home literacy, which in turn predicted early literacy (a latent variable derived from receptive vocabulary, letter‐word identification, and concepts about print). Implications for future research concerning parent involvement at home in the context of neighborhoods and the early literacy of at‐risk preschoolers is discussed.  相似文献   

Cultural differences in how individuals explain their lying and truth-telling tendencies     

Hye Jeong Choi  Hee Sun Park  Ju Yeon Oh 《Int J Intercult Relat》2011,35(6):749-766

This study investigated how cultural differences between Korea and the United States in attitudinal and normative components affect individuals’ explanation of their intentions to lie or tell the truth. Study 1 examined individuals’ intentions to base their lying or truth-telling tendencies on attitude-related reasons (i.e., attitudinal reasons) and subjective norm-related reasons (i.e., normative reasons). Study 2 examined individuals’ evaluation of a person who used attitudinal reasons or normative reasons to explain his/her behaviors of lying or truth-telling. The results showed that neither culture used one type of reason consistently across different behaviors. Instead, the types of behaviors influenced the way attitudinal and normative components were related to behavioral intentions. The attitudinal component was important for individuals’ explanations of their attitudinal reasons to lie and to tell the truth and that the normative component was important for individuals’ explanations of their normative reasons to lie. However, both the attitudinal and normative components were important for individuals’ explanations of their normative reasons to tell the truth. Cross-culturally, Koreans were more likely to use normative reasons when they had to explain why they intended to lie for a friend, whereas Americans were more likely to use normative reasons when they had to explain why they intended to tell the truth. In addition, Koreans and Americans had different preferences for each reason type depending on the type of behavior probably because Koreans, as compared to Americans, tend to view lying for a friend less negatively.  相似文献   

基于句法和语义角度的英语字典编纂评价     

刘佳敏 《科教文汇》2013,(22):135-135,138

字典对语言学习起着极其重要的作用,本文以《牛津高阶英汉双解词典》（第四版增补本）为例,探讨了字典的材质和内容特征,从句法和语义角度评价了该字典的编纂,目的在于引起学习者对字典选择的重视。  相似文献   

Anti-communist films sponsored by the US government in Singapore and Malaya: on the New York Sound Masters Inc.     

Wai-Siam Hee 《Inter-Asia Cultural Studies》2018,19(2):310-327

This article examines anti-Communist films made by Hollywood in Cantonese and Malay in Singapore and Malaya in the Cold War context of the “Campaign of Truth.” In the early 1950s, the United State Information Agency, an arm of the State Department, secretly commissioned and funded New York Sound Masters Inc. to produce and shoot several anti-Communist films in Singapore and Malaya. In 1953, cinemas across Malaya and Singapore screened Singapore Story and Kampong Sentosa, two Cold War products of the “Campaign of Truth.” In addition to analysing the ideology of these films, this article also combines declassified archive material from the US and Singaporean National Archives with primary materials from UK, US, Singaporean, and Malayan periodicals from the Cold War era in order to explore how these two films use Malay and Cantonese to narrate a Hollywood’s version of the Singaporean story. As these two films have been largely passed over in scholarship and the films and archives have not been regularly accessible, records of these films are absent from histories of film and television in the US, Singapore, and Malaya. This article aims to remedy this absence.  相似文献   

Direct observation and manipulation of hot electrons at room temperature     

Hailu Wang  Fang Wang  Hui Xia  Peng Wang  Tianxin Li  Juzhu Li  Zhen Wang  Jiamin Sun  Peisong Wu  Jiafu Ye  Qiandong Zhuang  Zaixing Yang  Lan Fu  Weida Hu  Xiaoshuang Chen  Wei Lu 《国家科学评论(英文版)》2021,8(9)

In modern electronics and optoelectronics, hot electron behaviors are highly concerned, as they determine the performance limit of a device or system, like the associated thermal or power constraint of chips and the Shockley-Queisser limit for solar cell efficiency. To date, however, the manipulation of hot electrons has been mostly based on conceptual interpretations rather than a direct observation. The problem arises from a fundamental fact that energy-differential electrons are mixed up in real-space, making it hard to distinguish them from each other by standard measurements. Here we demonstrate a distinct approach to artificially (spatially) separate hot electrons from cold ones in semiconductor nanowire transistors, which thus offers a unique opportunity to observe and modulate electron occupied state, energy, mobility and even path. Such a process is accomplished through the scanning-photocurrent-microscopy measurements by activating the intervalley-scattering events and 1D charge-neutrality rule. Findings here may provide a new degree of freedom in manipulating non-equilibrium electrons for both electronic and optoelectronic applications.  相似文献