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Predicting the Maintainability of Open Source software Using Design Metrics

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Wuhan University Journal of Natural Sciences 2008年第1期13卷 14-20页

作者： ZHOU Yuming1,2, XU Baowen1,3.1. School of Computer Science and Engineering, Southeast University, nanjing 2.0096, jiangsu,china 2. Department of Computing, Hong Kong Polytechnic University, Hong Kong, china 3. jiangsu institute of software quality, nanjing 2.0096, jiangsu,china School of Computer Science and Engineering Southeast University Nanjing China Department of Computing Hong Kong Polytechnic University Hong Kong China jiangsu institute of software {3. Nanjing China

This paper empirically investigates the relationships between 15 design metrics and maintainability of 148 Java open source software. The results show that size and complexity metrics are strongly related to the maintainability of open source software. However, cohesion and coupling, as currently captured by existing metrics, do not seem to have a significant impact on maintainability. When used together, these metrics can predict system maintainability fairly accurately （mean MREs below 3.%）.

关键词： open source: object-oriented maintainability metric prediction regression

Association between ICU quality and in-hospital mortality of V-V ECMO-supported patients—the ECMO quality improvement action(EQIA)study:a national cohort study in china from 2017 to 2019

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Frontiers of Medicine 2024年第2期18卷 315-326页

作者： Wei Cheng Jieqing Chen Xudong Ma Jialu Sun Sifa Gao Ye Wang Longxiang Su Lu Wang Wei Du Huaiwu He Yujie Chen Zunzhu Li Qi Li Jianhua Sun Hongbo Luo Jinbang Liu Guangliang Shan Bing Du Yanhong Guo Dawei Liu Chang Yin Xiang Zhou on behalf of the china National Critical Care quality Control Center-the ECMO quality improvement action(EQIA)study Department of Critical Care Medicine State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100730China Information Center Department/Department of Information Management State Key Laboratory of Complex Severe and Rare DiseasesPeking Union Medical College HospitalPeking Union Medical College&Chinese Academy of Medical SciencesBeijing100730China Department of Medical Administration National Health Commission of the People’s Republic of ChinaBeijing100044China School of Population Medicine and Public Health Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China Department of Epidemiology and Biostatistics Institute of Basic Medicine SciencesChinese Academy of Medical Sciences(CAMS)&School of Basic MedicinePeking Union Medical CollegeBeijing100730China National institute of Hospital Administration National Health Commission of the People’s Republic of ChinaBeijing100044China 不详

This cohort study was performed to explore the influence of intensive care unit(ICU)quality on in-hospital mortality of veno-venous(V-V)extracorporeal membrane oxygenation(ECMO)-supported patients in *** study involved all V-V ECMO-supported patients in 3.8 of 1700 tertiary hospitals from 2017 to 2019,using data from the National Clinical Improvement System and china National Critical Care quality Control *** quality was assessed by quality control indicators and capacity *** the 2563.V-V ECMO-supported patients in 3.8 hospitals,a significant correlation was found between ECMO-related complications and *** reintubation rate within 48 hours after extubation and the total ICU mortality rate were independent risk factors for higher in-hospital mortality of V-V ECMO-supported patients(cutoff:1.5%and 7.0%;95%confidence interval:1.05–1.48 and 1.04–1.45;odds ratios:1.25 and 1.23.P=0.012 and P=0.015,respectively).Meanwhile,the V-V ECMO center volume was a protective factor(cutoff of≥50 cases within the 3.year study period;95%confidence interval:0.57–0.83.odds ratio:0.69,P=0.0001).The subgroup analysis of 864 patients in 11 high-volume centers further strengthened these ***,ICU quality may play an important role in improving the prognosis of V-V ECMO-supported patients.

关键词： veno-venous extracorporeal membrane oxygenation in-hospital mortality high-volume centers quality control intensive care unit capacity parameters

Grey Disorder in Field Flue-Cured Tobacco

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Pedosphere 1999年第4期9卷 369-374页

作者： ZHANG XIN ZHAO QIBO YU HUIMEI CAO ZHIHONG(1institute of Soil Science, the Chinese Academy of Sciences, nanjing 210008 (china))(2{3. Provincial Tobacco Company, nanjing 210O29 (china)) 中科院南京土壤所江苏南京 210008 江苏省烟草公司江苏南京中科院南京土壤所江苏南京

A field study was carried out on the grey disorder in fine-cured tobacco (Nicotiana tabacum L.) *** results showed that low Eh and high available Fe content in the soils were responsible for the grey tobaccoand dead roots. Grey disorder leaves produced low quality lamina, which was low in N, nicotine, reducedsugar and K contents. In this study’ soil available Mn and leaf Mn contents were in a relatively low level andshould not be an important factor in the occurrence of grey disorder in fine-cured tobacco.

关键词： flue-cured tobacco grey disorder iron manganese toxicity

Multiple Effects of Energy Issues and Countermeasures: A Case of Shandong Province

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Chinese Journal of Population,Resources and Environment 2008年第4期6卷 88-94页

作者： Wang Chengxin1,2 , Wang Gefang3., Yao Shimou4 1. College of Population, Resources and Environment, Shandong Normal University, Jinan Shandong 250014, china 2. Research Center of Cycle Economy of Shandong Province, Jinan Shandong 250001, china 3. Party School of the Shandong Committee of CPC, Jinan Shandong 250021, china 4. {3. institute of Geography and Limnology, Chinese Academy of Sciences, {3. jiangsu 210008, china College of Population Resources and Environment Shandong Normal University Research Center of Cycle Economy of Shandong Province Party School of the Shandong Committee of CPC nanjing institute of Geography and Limnology Chinese Academy of Sciences

Energy is now becoming the bottleneck of urban and regional development. The paper takes Shandong Province, one of the most energy consuming provinces in china, as an example, uses quantity methods such as SPSS (Stastics Package for Social Science) cluster sampling and regression analysis, and applies quantity analysis, to analyze the situation of energy issues in Shandong province. The conflicts between the quick industrialization and increasing extensive economic development, between urban population and energy consuming per head, between the infinite energy consuming desire and the low level of managing system, and between the unstable world energy supply and the limited energy storage in china are the main factors of energy crisis in Shandong, which not only results in energy shortage, but also becomes the barrier of economic and social development. In order to ensure sufficient energy supply for Shandong province in the 21st century, we should take countermeasures, such as changing the economic development model, pursuing a multiple and high quality energy strategy, improving the intensive urbanization strategy, and building a scientific energy system.

关键词： energy effects countermeasure Shandong Province

An analysis on the evolvement processes of lake eutrophication and their characteristics of the typical lakes in the middle and lower reaches of Yangtze River

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Chinese Science Bulletin 2006年第13期51卷 1603-1613页

作者： CHENG Xiaoying1,2,3.& LI Shijie1 1. nanjing institute of Geography & Limnology, Chinese Academy of Sciences, nanjing 210008, {3. 2. The Key Laboratory of Industrial Biotechnology, Ministry of Educa- tion, Southern Yangtze University, Wuxi 21403., {3. 3. School of Biotechnology, Southern Yangtze University, Wuxi 21403., {3. nanjing institute of Geography & Limnology Chinese Academy of Sciences Nanjing China The Key Laboratory of Industrial Biotechnology Ministry of Education Southern Yangtze University Wuxi China School of Biotechnology Southern Yangtze University Wuxi China

According to the study on the aquatic environment of the typical lakes in the middle and lower reaches of Yangtze River, lake eutrophication is a process in which the lake ecosystem degenerates, resulting in the deterioration of the water quality due to the enrichment of the nutrients. Moreover, the succession of lake ecosystem and change of water quality both couple well with the evolvement of tro- phic state. Then the conceptual model is mentioned and ten lake states are classified. Based on these, the authors analyzed the eutrophication processes of the typical lakes in the middle and lower reaches of Yangtze River. The large lakes with taking in - send- ing out water typical of Poyang Lake evolve from State 1 before the 1980s into State 2 after the 1980s, the large and medium lakes typical of Taihu Lake evolve from State 1-2 in the 1960s into State 8 in the 1980s then into State 9 in the 1990s, the medium and small shallow lakes typical of Honghu Lake evolve from State 1 in the 1960s into State 2 after the 1980s and the small city (suburban) lakes typical of Donghu Lake evolve from State 2 in the 1960s into State 9 after the 1970s. Further, the 1980s is the key con- version period of the lakes of various types typical of Poyang Lake, Honghu Lake and Taihu Lake con- verting into mesotrophic state, the 1990s is that of Taihu Lake into eutrophic state and the 1970s is thatof the small city (suburban) lakes typical of Donghu Lake into eutrophic state. The series of nutrient evolvement of different typical lakes are similar, but the processes are not synchronous, which is related to the various human and natural driving mechanisms in lake basins.

关键词：长江湖泊富营养化概念模型转变时期驱动机制

Using Pre-Estimate with Feedback for Adaptation Web Server QoS Guarantee

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Wuhan University Journal of Natural Sciences 2006年第1期11卷 256-262页

作者： WANG Li SHEN Qing-guo institute of Communications Engineering PLA University of Science and Technology Nanjing 210007 Jiangsu China

The heterogeneity in the communicating terminals needs to he handled through software-supported adaptation, The real-time dynamical adaptation brings the system more time cost unavoidably. In this paper, we propose QoS pre-estimation for user admission control and system load control. Feedback acts as adjuster of the input parameters of the pre-estimate module. We present tests results to evaluate our approach, The test results show that our service quality control mechanism is effective.

关键词： pre-estimate feedback control QoS adaptation system

Bridge Ontology:A Multi-Ontologies-Based Approach for Semantic Annotation

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Bridge Ontology:A Multi-Ontologies-Based Approach for Semant...

A Feedback-Based Web Search Engine

The First Conference on Web Information System and Applications

作者： WANG Peng, XU Bao-wen, LU Jian-jiang, LI Yan-hui, JIANG Jian-huaDepartment of Computer Science and Engineering, Southeast University, nanjing 2.0096, jiangsu,china {3. institute of software quality, nanjing 2.0096, jiangsu,china State Key Laboratory of software, Wuhan University, Wuhan 43.072, Hubei,china School of Communications Engineering, People’s Liberation Army University of Science and Technology,nanjing 210007, jiangsu,china

＜正＞ Representing the relationships between ontologies is the key problem of semantic annotations based on multi-ontologies. Traditional approaches only had the ability of denoting the simple concept subsumption relations between ontologies. Through analyzing and classifying the relationships between ontologies, the idea of bridge ontology was proposed, which had the powerful capability of expressing the complex relationships between concepts and relationships between relations in multi-ontologies. Meanwhile, a new approach employing bridge ontology was proposed to deal with the multi-ontologies-based semantic annotation problem. The bridge ontology is a peculiar ontology, which can be created and maintained conveniently, and is effective in the multi-ontologies-based semantic annotation. The approach using bridge ontology has the advantages of low-cost, scalable, robust in the web circumstance, and avoiding the unnecessary ontology extending and integration.

关键词： semantic web bridge ontology multi-ontologies semantic annotation

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A Feedback-Based Web Search Engine

software Engineering Technology for the 21^(st) Century

The First Conference on Web Information System and Applications

作者： ZHANG Wei-feng, XU Bao-wen, ZHOU Xiao-yu Department of Computer Science and Engineering. nanjing University of Posts and Telecommunications , nanjing 210003. jiangsu. {3. Department of Computer Science and Engineering. Southeast University. nanjing 2.0096, jiangsu. {3. jiangsu institute of software quality. nanjing 2.0096 jiangsu, {3. The State Key Laboratory of software Engineering. Wuhan University, Wuhan 13.072, Huhei, {3.

＜正＞ Web search engines are very useful information service tools in the Internet. The current web search engines produce search results relating to the search terms and the actual information collected by them. Since the selections of the search results cannot allcet the future ones, they may not cover most people’s interests, In this paper, feedback information produced by the users’ aceessing lists will be represented by the rough set and can reconstruct the query string and influence the search results. And thus the search engines can provide self-adaptability.

关键词： WWW srarch engine query reconstruction feedback

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Wuhan University Journal of Natural Sciences 2001年第Z1期6卷 152-158页

作者： Cheng Hu institute of software, Chinese Academy of Sciences Beijing 100080, china institute of software Chinese Academy of Sciences Beijing 100080 China

In this paper we will discuss the software engineering technology for the 21 st century. First we review development over the last half century, overview application requirement and environment, accept a challenge. Then we outline following software engineering techniques: 1) Process;2) Analysis;3. Design;4) UML;5) Component;6) Java +XML;7) Integrated;8) quality(ISO9000&CMM).

关键词： software engineering object oriented component Java UML CMM ISO9000