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常中爱 《襄樊职业技术学院学报》2014,(6):33-37
西咸新区是经国务院批准设立的首个以创新城市发展方式为主题的国家级新区。为了体现这一主题,实现农业方面的跨越发展,西咸新区可以考虑发展基于CSA的生态都市农业。文章在阐释CSA和生态都市农业概念的基础上,分析了西咸新区发展CSA的有利条件,提出实施CSA的具体方式以及应注意的问题,期望能对西咸新区农业及农村的发展提供参考。 相似文献
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文章揭示了网上《剑桥科学文摘(CSA)》所蕴含的丰富科学信息内容，并详细介绍了查询其内容的检索方法和技巧。 相似文献
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加法器是数字IC设计中的一个基础,其性能的好坏有时会直接影响到整个IC的性能,本文分别介绍了CRA(Carry ripple adder)、CLA(Carrylook abeadadder)、CSA(Carry selectadder)和BKA(Brent-KungAdder)等几种常用架构的加法器.并用Verilog HDL语言对其进行了设计,利用常用的EDA工具,如:Modelsim、Vefilog_XL、NCverilog对其做了仿真对比.分析了它们各自的面积、运算速度、功耗等性能特点. 相似文献
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《European Journal of Sport Science》2013,13(2):231-239
Abstract Congestive heart failure (CHF) patients experience reduced muscle fatigue resistance and exercise capacity. The aim of this study was to assess whether skeletal muscle in CHF patients has a normal training response compared to healthy subjects. We compared the effect of one-legged knee extensor (1-KE) endurance training in CHF patients (n=10), patients with coronary artery disease (CAD, n=9) and healthy subjects (n=13). The training response was evaluated by comparing trained leg and control leg after the training period. The fall in peak torque during 75 maximal 1-KE isokinetic contractions revealed that CHF patients were less fatigue resistant than healthy subjects in the control leg, but not in the trained leg. Peak power and peak oxygen uptake during dynamic 1-KE exercise was ~10–16% higher in trained leg than control leg. This training response was not significant different between groups. Muscle biopsies of vastus lateralis showed that fibre type composition was not different between trained leg and control leg. Capillary density was 6.5% higher in trained leg than control leg when all groups were pooled. In conclusion, the more fatigable skeletal muscle of CHF patients responds equally to endurance training compared to skeletal muscle of CAD patients and healthy subjects. 相似文献
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BackgroundBorderline personality disorder (BPD) is associated with high rates of suicidal and self-injurious behaviors and a substantial proportion of BPD patients have a history of trauma, particularly childhood sexual abuse (CSA).ObjectiveTo compare the clinical presentation severity in female adolescent inpatients with BPD with and without history of prolonged CSA.Participants and settingFemale adolescent BPD patients admitted to a psychiatric inpatient unit.MethodsA retrospective analysis of records of the inpatients, divided into two groups: with (n = 38) and without (n = 40) a history of prolonged CSA. Prolonged CSA was defined as sexual abuse continuing for at least 3 months. Demographic and clinical data, including number and duration of psychiatric hospitalizations until the age 19, non-suicidal self-injury (NSSI), suicide attempts, cigarette smoking, alcohol and drug use, and sexual impulsivity were compared between the two groups.ResultsThe BPD + prolonged CSA group had a larger duration of the first psychiatric hospitalization, number of hospitalizations and cumulative length of hospitalizations compared with the control group. Furthermore, the BPD + prolonged CSA group had a higher number of suicidal attempts, and higher rates of severe NSSI events, cigarette smoking, alcohol use, and sexual impulsivity.ConclusionsThis study demonstrated for the first time that adolescent female BPD inpatients with a history of prolonged CSA, manifest more severe clinical presentation compared to those without prolonged CSA. Hence, it appears essential to encourage therapists to inquire about history of CSA and refer adolescent female BPD inpatients with prolonged CSA to appropriate intensive therapy. 相似文献
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网络数据库检索系统的功能与比较 总被引：1，自引：0，他引：1
网络数据库已成为数字图书馆馆藏资源的重要组成部分，在引进网络数据库时，一个数据库往往有几家公司的检索系统可供选择，不同检索系统从界面到功能都有较大的差别。本文对目前常用的四大网络数据库检索系统从用户界面、检索功能、输出功能、链接和整合功能等方面作了系统介绍，并对他们各自的特点和不足进行比较。 相似文献
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Although parents are essential to child sexual abuse (CSA) prevention efforts, their views on prevention and protection are not always represented in the research literature. In this qualitative study of 24 Australian parents, beliefs about CSA, its risk factors, prevention methods, and parents’ role in CSA protection, and parents' approaches to protection of their own children, are examined. Findings were condensed into five themes: (a) parents' understanding of child sexual abuse, grooming and risk; (b) parent-led CSA education; (c) parents’ beliefs about CSA education; (d) children recognizing and resisting CSA; and (e) parent responsibility for protection. Findings suggest that parents have a good knowledge of CSA and its risks. However, they do not provide their children with the comprehensive prevention messages recommended by prevention campaigns and many concentrate on abduction dangers. This gap between knowledge and parental communication with children could be due to parents' beliefs that there may be harms associated with education of children about CSA (e.g., such as inciting new fears and worries or reducing trust in others) and that the method may not be effective in protecting children from CSA. This study adds to the existing literature by presenting information that could be useful in designing programs to include parents in CSA protection and by approaching CSA research with parents as the key agents in the protection of children. 相似文献