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排序方式: 共有2684条查询结果,搜索用时 31 毫秒
981.
对闽江源流域生态环境和生态补偿现状进行了分析,发现存在环境污染、水土流失、生态补偿体系不健全等问题.在此基础上,提出了建立健全闽江源流域长效生态补偿机制,协调闽江源流域生态环境保护中的多方利益,促进闽江上下游之间社会经济的共同发展的建议.  相似文献   
982.
通过对国内外文献的分析和研究,简要阐述咔唑类化合物的分子结构特征,以及分离与分析的技术手段,综述咔唑类化合物作为油气运移参数应用实例及其适用性,并且提出这类化合物也可作为成熟度、沉积环境和油源对比等参数使用。  相似文献   
983.
不管教学手段如何改进,不管教学设备如何更新,学习局部解剖学最科学、最有效的办法仍然是进行尸体解剖操作。然而尸体的来源越来越紧张。因此,如何尽最大限度发挥教学尸源的用途和保护日渐显得重要。近年来学校采取正常解剖前模拟手术操作、保护性正常解剖操作、第二课堂完善标本制作三个步骤(或三种方式),使局解尸源得以充分利用和保护。现将教学实践中积累的一些经验进行归纳总结,以供大家参考。  相似文献   
984.
由于书面语料记录语言的随机性,要更全面深入了解近代汉语的语言现象,有必要发掘更多中古文献中的语言事实。文章在讨论不同类型语料在语言研究中价值略有侧重的基础上,以齐梁陶弘景纂修的《真诰》为例,从一般语词和专门语词两方面论述了中古道经在近代汉语语词溯源方面的作用:中古道经在一般语词溯源上作用巨大;而在专门语词研究上,则应当成为主要的依托材料。  相似文献   
985.
排除注册入学、提前录取两个因素,在不分批次,不分公办民办的前提下,选取最高分、最低分、平行志愿录取率和非服从志愿录取率4个指标,用聚类分析法将江苏省2011年76所高职招生情况分为5类。分析表明:面对生源减少,高职招生应考虑区域经济、扶持特殊教育、确保生源质量;与此同时,高职办学也要注意增强办学实力、重视专业建设。  相似文献   
986.
This study used panel data to examine attitudes of U. S. residents toward the Soviet Union during the onset of a thaw in relations between the superpowers in the mid 1980s. It hypothesized that increased consumption of world news would covary with more‐favorable changes in such attitudes. Data analyses corroborated the prediction.  相似文献   
987.
Recent research by communication scholars has investigated the dynamics of abusive spousal relationships (Chandler, 1986; Infante, Chandler, & Rudd, 1989; Infante, Chandler‐Sabourin, Rudd, & Shannon, 1990; Rancer & Niemasz, 1988; Rudd, Burant, & Beatty, 1994; Sabourin, Infante, & Rudd, 1993). Infante and his colleagues have suggested that those involved in violent relationships communicate differently with their partners than those involved in nonviolent relationships. Based on this prior research, it seems important for communication scholars to further investigate the communication behaviors of individuals involved in violent relationships. This current study seeks to advance the family violence research by comparing the types of compliance‐gaining strategies that battered and non‐battered women report using during their disputes.  相似文献   
988.
The purpose of this paper is to examine the educational and informational needs of public library users in Nigeria. The data was obtained from the answers to an inquiry form handed to persons entering the library during a typical six days of operation in seven public libraries in Nigeria. It was discovered that a large number of users used the library as “study hall” (69.1 percent) and seek library materials for their school work (72.3 percent). It is recommended that public libraries should gear their collections to the needs of the people. Focused collection rather than balanced collection is recommended. Normal library functions should be expanded to include education, literacy, and health care.  相似文献   
989.
This study assessed the effects of cues of family history as a risk factor in direct-to-consumer advertisements. An experiment with a sample of 395 adults found significant impacts of familial risk cues on self-efficacy and behavioral intentions. Specifically, familial risk cues strengthened both intention to engage in healthy lifestyles and intention to seek advertised medications, partly through enhanced efficacy. Effects on perceived genetic risk for health conditions or belief in genetic determinism were not found. The findings suggest that familial risk cues incorporated in pharmaceutical appeals can enhance behavioral intentions in response to risk, without increasing a sense of fatalism. Theoretical and practical implications of the study are discussed.  相似文献   
990.
This study applies chaos theory to a system-wide analysis of crisis communication in a natural disaster. Specifically, we analyze crisis communication during the 1997 Red River Valley flood in Minnesota and North Dakota. This flood, among the worst in modern American history, consumed entire metropolitan areas, displacing thousands of people. The conditions and decisions leading to the disaster, and the subsequent reactions are retraced. Communication related to river crest predictions (fractals), the shock at the magnitude of the crisis (cosmology episode), novel forms of reorganizing (self-organization), and agencies that aided in establishing a renewed order (strange attractors) are evaluated. Ultimately, we argue that preexisting sensemaking structures favoring rationalized, traditional views of a complex system led officials to make inappropriately unequivocal predictions and ultimately diminished the effectiveness of the region's crisis communication and planning.  相似文献   
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