With the vigorous development of equipment manufacturing industry in China, higher requirements to the equipment supportability are put forward. How to evaluate the supportability of equipments(especially the aviation...With the vigorous development of equipment manufacturing industry in China, higher requirements to the equipment supportability are put forward. How to evaluate the supportability of equipments(especially the aviation equipment-aircraft) objectively and correctly is the problem to be solved in the development of aviation equipments construction, demonstration and battle application.Aimed at the needs of the supportability analysis of complex equipment systems-aircraft, a model of aircraft support concept evaluation based on DEA(data envelopment analysis) and PCA(principal component analysis) is proposed. The model is used to evaluate a certain aircraft support concept.The process and the results of evaluation show that proposed model is feasible and effective. The model is suitable for advanced aircraft support concept evaluation. The feasibility and effectiveness of the proposed model is verified by the analysis of the evaluation results. This method is applicable to the evaluation of aircraft support concepts.展开更多
To solve the unbalanced data problems of learning models for semantic concepts, an optimized modeling method based on the posterior probability support vector machine （PPSVM） is presented. A neighborbased posterior ...To solve the unbalanced data problems of learning models for semantic concepts, an optimized modeling method based on the posterior probability support vector machine （PPSVM） is presented. A neighborbased posterior probability estimator for visual concepts is provided. The proposed method has been applied in a high-level visual semantic concept classification system and the experiment results show that it results in enhanced performance over the baseline SVM models, as well as in improved robustness with respect to high-level visual semantic concept classification.展开更多
目的阐明发展性照顾的概念内涵,为开展新生儿发展性照顾提供参考。方法检索中国知网、万方数据知识服务平台、维普网、中国生物医学文献数据库、PubMed、Web of Science、Embase、Scopus及CINAHL等数据库中涉及发展性照顾的相关文献,采...目的阐明发展性照顾的概念内涵,为开展新生儿发展性照顾提供参考。方法检索中国知网、万方数据知识服务平台、维普网、中国生物医学文献数据库、PubMed、Web of Science、Embase、Scopus及CINAHL等数据库中涉及发展性照顾的相关文献,采用Rodgers演化概念分析法对发展性照顾的概念进行分析。结果共纳入35篇文献,总结发展性照顾具有环境优化、准确评估、个体调适、情感照护、家庭参与5个定义属性;前置因素包括发育需求因素、疾病和治疗因素、家庭因素;后置影响包括对新生儿自身影响、对家庭的影响、对医疗组织的影响。结论通过对发展性照顾的概念发展、定义属性、前因后果等进行分析,明确了新生儿发展性照顾的概念。护理人员应结合发展性照顾的概念内涵,制订相应的干预策略,以促进新生儿生长发育。展开更多
目的分析并阐述慢性病患者内感知的概念内涵,以期为护理实践提供参考。方法系统检索PubMed、Cochrane Library、CINAHL、Web of Science、Embase、中国知网、万方数据知识服务平台、维普网、中国生物医学文献服务系统中与慢性病患者内...目的分析并阐述慢性病患者内感知的概念内涵,以期为护理实践提供参考。方法系统检索PubMed、Cochrane Library、CINAHL、Web of Science、Embase、中国知网、万方数据知识服务平台、维普网、中国生物医学文献服务系统中与慢性病患者内感知相关的文献,并采用Rodgers演化概念分析法对纳入文献进行分析。结果共纳入37篇文献,其中6篇中文文献,31篇英文文献。慢性病患者的内感知概念属性包括体内生理信号的准确解读、生理状态波动的敏锐感知、基于情境的感知动态变化3个方面;其前因变量包括人口学因素、疾病相关特征、心理因素、社会支持;后果包括优化情绪状态、提升自我护理能力、改善临床结局。结论明确慢性病患者内感知的概念,可为以后国内研制不同慢性疾病患者内感知特异性评估工具,构建本土化的干预策略提供思路。展开更多
文摘With the vigorous development of equipment manufacturing industry in China, higher requirements to the equipment supportability are put forward. How to evaluate the supportability of equipments(especially the aviation equipment-aircraft) objectively and correctly is the problem to be solved in the development of aviation equipments construction, demonstration and battle application.Aimed at the needs of the supportability analysis of complex equipment systems-aircraft, a model of aircraft support concept evaluation based on DEA(data envelopment analysis) and PCA(principal component analysis) is proposed. The model is used to evaluate a certain aircraft support concept.The process and the results of evaluation show that proposed model is feasible and effective. The model is suitable for advanced aircraft support concept evaluation. The feasibility and effectiveness of the proposed model is verified by the analysis of the evaluation results. This method is applicable to the evaluation of aircraft support concepts.
基金Sponsored by the Beijing Municipal Natural Science Foundation(4082027)
文摘To solve the unbalanced data problems of learning models for semantic concepts, an optimized modeling method based on the posterior probability support vector machine （PPSVM） is presented. A neighborbased posterior probability estimator for visual concepts is provided. The proposed method has been applied in a high-level visual semantic concept classification system and the experiment results show that it results in enhanced performance over the baseline SVM models, as well as in improved robustness with respect to high-level visual semantic concept classification.
文摘目的阐明发展性照顾的概念内涵,为开展新生儿发展性照顾提供参考。方法检索中国知网、万方数据知识服务平台、维普网、中国生物医学文献数据库、PubMed、Web of Science、Embase、Scopus及CINAHL等数据库中涉及发展性照顾的相关文献,采用Rodgers演化概念分析法对发展性照顾的概念进行分析。结果共纳入35篇文献,总结发展性照顾具有环境优化、准确评估、个体调适、情感照护、家庭参与5个定义属性;前置因素包括发育需求因素、疾病和治疗因素、家庭因素;后置影响包括对新生儿自身影响、对家庭的影响、对医疗组织的影响。结论通过对发展性照顾的概念发展、定义属性、前因后果等进行分析,明确了新生儿发展性照顾的概念。护理人员应结合发展性照顾的概念内涵,制订相应的干预策略,以促进新生儿生长发育。
文摘目的分析并阐述慢性病患者内感知的概念内涵,以期为护理实践提供参考。方法系统检索PubMed、Cochrane Library、CINAHL、Web of Science、Embase、中国知网、万方数据知识服务平台、维普网、中国生物医学文献服务系统中与慢性病患者内感知相关的文献,并采用Rodgers演化概念分析法对纳入文献进行分析。结果共纳入37篇文献,其中6篇中文文献,31篇英文文献。慢性病患者的内感知概念属性包括体内生理信号的准确解读、生理状态波动的敏锐感知、基于情境的感知动态变化3个方面;其前因变量包括人口学因素、疾病相关特征、心理因素、社会支持;后果包括优化情绪状态、提升自我护理能力、改善临床结局。结论明确慢性病患者内感知的概念,可为以后国内研制不同慢性疾病患者内感知特异性评估工具,构建本土化的干预策略提供思路。
