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Search Results: 1 - 10 of 330431 matches for " 王芳 "
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大学生工程技术应用能力培养的实践研究
Practice Study of College Students’ Engineering Technology Application Ability
 [PDF]


Vocational Education (VE) , 2016, DOI: 10.12677/VE.2016.53012
Abstract:
为了适应现代工程技术的发展,学生需要具备比较扎实的工程技术应用能力。技术人才的培养是高校,尤其是技术应用型高校的重要任务。本文将目前工程项目中重要的分析招标书及书写投标书的工作溶入到人才的培养中,分析了工科学生工程技术应用能力培养的研究目的和培养思路,介绍了一份详细的实施方案,并给出了教学效果的反馈情况分析。通过具体分析发现该方案可使学生大致了解工程项目的分析、设计、实施与管理的基本内容,初步运用所学专业知识,在分析典型工程案例的同时掌握工程技术方案的设计、询价、绘图及文字整理方法,并且加深了学生对工程项目的认知,培养了学生的团队协作能力,这为技术应用型人才的培养提供了保障。
In order to adapt to the development of modern engineering, students need to have more solid engineering application ability. Training of technical personnel is an important task of colleges and universities, especially the technology applied universities. This paper integrates two very important parts of the engineering projects into the talent development, which are the analysis of bid document and the tender’s writing. This paper also analyzes the objectives and the ways of developing college students’ ability in engineering technology application programs. A detailed implementation plan is introduced; the effect on the teaching of feedback is analyzed. Through detailed analysis, we find that the program allows students to have an overview of the basic content of analysis, design, implementation and management of the project. Meanwhile, they master the methods of how to design engineering solution, ask price, draw graphics and sort out text by their specialized knowledge preliminarily, and the students’ awareness of engineering project is deepened, which trains students’ teamwork capabilities and provides a guarantee to cultivate technical talents.
大型装备维修计划综合评估方法研究
Synthetic Evaluation Method Research on Maintenance Plan of Large Equipment Maintenance
 [PDF]

, 胡小建
Computer Science and Application (CSA) , 2012, DOI: 10.12677/csa.2012.21003
Abstract: 大型装备维修集很多工序于一体,调度计划相对复杂,难以选择出最佳计划。针对该问题,提出了一种基于证据理论、层次分析法和模糊综合评判的维修计划综合评估方法。该方法采用证据理论融合多专家意见,层次分析法得到各指标权重,模糊综合评判进行综合评价得到最优计划,这样避免了主观因素对决策结果的影响,并建立了维修计划综合评估模型,通过对维修计划的评价,验证了该模型的合理性。
Large equipment maintenance has many process, its scheduling is relatively complex. It is difficult to choose the best plan. To solve this problem, is proposed based on DS evidence theory, analytic hierarchy process and fuzzy comprehensive evaluation method of a comprehensive assessment of the large equipment maintenance project. Fusion using DS evidence theory more than expert opinion, the level of analysis to get the weight of each index, a comprehen-sive evaluation of fuzzy comprehensive evaluation to obtain the optimal plan, so to avoid subjective factors influence the decision-making results, and the establishment of an integrated assessment model for large equipment maintenance plan, through the large equipment maintenance program evaluation, validation of the model is reasonable.
多层次建设用地集约评价指标体系初探
The Study on the Intensive Evaluation Index System of Multi-Level Construction Land
 [PDF]

, 郑新奇
Urbanization and Land Use (ULU) , 2014, DOI: 10.12677/ULU.2014.22005
Abstract:

科学合理的评价指标体系是土地集约评价的核心,目前的研究多是关于区域建设用地、城市用地、开发区用地等方面的单体评价指标体系,这些指标体系之间的异同需要进行研究。本文采用文献资料归纳和比较分析法,探讨单体评价指标体系间的一致性与差异性,构建了区域–城市–开发区–高校教育用地–农村居民点的多层次建设用地集约评价指标体系,完善了集约用地评价指标结构层。结果表明,各单体评价指标体系在内涵表达、评价指标的设定和指标体系的设计上存有共性因素;并创新性地提出了多层次评价指标体系的构建思路及核心指标体系。
The science-reasonable evaluation index system has been regarded as the core of land intensive assessment, and the relative studies mainly focused on monomer evaluation index system, including region-based construction land, urban construction land and development zones and so on. Differences between them needed to be studied. Methods employed included documentation and comparative analysis. By analyzing and comparing similarities and the differences between the monomer evaluation index systems, the paper put forward the ideas of constructing multi- level evaluation index system, including region, urban, development zones, education land of colleges and rural housing, which could improve the evaluation index structure layer. The conclusions had two aspects: firstly, significant similarities were presented in the aspect of connotation expression, selection of evaluation index and design of index system; secondly, the paper innovatively put forward the ideas for construction of multi-level evaluation index system and the core indicators system.

Cn上φ-闭正流的Lelong数
The Lelong Number of a φ-Positive Closed Current on Cn
 [PDF]

, 康倩倩
Pure Mathematics (PM) , 2016, DOI: 10.12677/PM.2016.62015
Abstract:
本文给出了Cn上φ-闭正流ddφf的Lelong数,这里φ是特殊Lagrangian calibration,f是Lloc1(Cn)中的φ-多次下调和函数。并且我们应用此Lelong数,将单复变中全纯函数的极小模原理进行了推广,给出了此类φ-多次下调和函数的一个下界估计。
In this paper, we give the Lelong number of a φ-positive closed current ddφf , where φ is the special Lagrangian calibration and f is a φ-plurisubharmonic function in Lloc1(Cn)?. Using that Lelong number, we generalize the minimum modulus principle for the holomorphic function of one complex variable, and we get an estimate of the low bound for φ-plurisubharmonic functions.
长沙市城乡居民能源消费行为影响因素研究
Research on the Influencing Factors of Changsha Urban and Rural Residents’ Energy-Consuming Behaviors
 [PDF]

肖洪安,
Modern Management (MM) , 2013, DOI: 10.12677/MM.2013.32012
Abstract:
能源是人类赖以生存和发展的物质基础,能源问题与人类生存和发展密切相关,研究城乡居民能源消费行为对提高能源利用率,节约能源资源有重要意义,对统筹城乡发展,建立城乡均等化区域基本公共服务体系有重要影响。本文对长沙市349份城乡居民进行了问卷调查,运用一般多元线性回归模型和Tobit模型对样本能源消费行为及影响因素相关数据进行模型分析。通过分析得出的结论是:长沙市农村居民能源消费是以传统生物质能源和煤为主,而城市居民对电能和天然气的消费量较大;同时,在影响因素中,家庭特征类、家庭财富类和资源可获性等各类因素对居民能源消费行为的影响大小和影响方向因能源种类不同有差异,同种因素对同种能源消费行为也存在城乡差异;最后,为优化城乡能源消费结构,合理开发利用资源,减少非清洁能源的使用,减少废气物排放,减少浪费等提出了相应的政策建议。
Energy is the material foundation for the existence and development of human. Energy problems are closely related to the existence and development of human. The study on energy-consuming behaviors of the rural and urban residents is significant to improve energy efficiency and conserve energy resource, and it is also important to balance urban and rural development and achieve the equalization of basic public service system for urban-rural areas. 349 rural and urban residents in Changsha were investigated with questionnaires. Related data on energy-consuming behaviors and the determine factors were analyzed by using the general multiple linear regression model and Tobit model. The conclusions are: 1) rural residents are primary con-sumers of the biomass energy and coal while urban residents are primary consumers of electrical energy and natural gas in Changsha; 2) Among the influential factors, the effects of family characteristics, family wealth and resource availability on resident energy-consuming behaviors vary according to different types of energy resources; 3) The effects of the same influential factor on the same energy-consuming behavior may be dif-ferent because of the difference between urban and rural areas. Policy suggestions are advanced for optimiz-ing the urban-rural energy consumption structures, rationally developing and utilizing resources, decreasing non-clean energy use, cutting down exhaust emissions and reducing waste.
基于Praat软件的哼唱检索中参数选取分析
Characteristic Parameters Analysis in Query by Humming Based on Praat Software
 [PDF]

, 孟庆良
Open Journal of Acoustics and Vibration (OJAV) , 2014, DOI: 10.12677/OJAV.2014.22002
Abstract:
哼唱检索技术是一种基于内容的音乐检索技术。在哼唱检索技术中,声音特征参数的选取至关重要,它直接影响检索的最终结果。文章通过Praat语音分析软件,对声音的四种特征参数(能量、共振峰、MFCC-Mel倒谱系数、基音)分别进行了不同的计算机模拟实验,最终通过比对选取出符合哼唱检索要求的特征参数。
Humming retrieval technology is a content-based music retrieval. In humming retrieval, it is es- sential to select the sound characteristic parameters, which will directly affect the final result of the search. Through Praat speech analysis software, different computer simulation experiments were carried out respectively to analyze the four characteristic parameters (energy, formants, MFCC-Mel Cepstral, pitch) of sound. By contrasting the results of these experiments, those charac- teristic parameters that can meet the humming retrieval request were selected.
水循环改变的生态影响评价研究进展
Research Progress on Ecological Impact Assessment about Water Cycle Change
 [PDF]

张秋霞,
International Journal of Ecology (IJE) , 2014, DOI: 10.12677/IJE.2014.32004
Abstract:

淡水循环是流域尺度内坡面植被、河流、湖沼湿地以及河口近岸海域四大类生态系统的重要环境因子,改变水循环会不同程度地影响流域内各类生态系统。本文从生态系统过程、结构和功能三方面梳理了国内外有关水循环改变生态系统的影响评价工作;指出我国水资源开发力度大使流域水循环显著改变,以及未来发展对水资源与健康生态的双重需要,将会使围绕流域水循环的生态影响评价有更广泛的需求。目前存在的主要问题是生物本底信息缺乏、生态水文过程不清晰、生态恢复工程人为调控因素被忽略,需要基于生态站有限的信息建立分区生态基准,应加强各类生态系统生态水文过程的研究,开展生态系统的动态影响评价。
Freshwater cycle is the major environmental factor for four ecosystems including slope vegetation, river, lake or wetland and estuary in watershed scale. Variation of hydrological cycle will affect each ecosystem to different extent. By analyzing ecosystem’s process, structure and function, the impact assessment research both at home and abroad for how hydrological cycle affect ecosystem was summarized in this article. The article also indicated that in China more and more extensive water resources’ development by the government has changed hydrological cycle obviously and future economic development needs both water resources and healthy ecosystem. They will make the study on ecological impacting assessment caused by hydrological cycle variation in watershed become more desired. The main problems were summarized as follow: a) There is a lack of original biological information; b) Processes between hydrology and ecology in aquatic ecosystem are not clear enough; c) Influences of artificial controlling for ecosystem restoration are ignored. The main suggested methods are to construct ecological basis in different area based on limited ecological monitoring station, enhance research on eco-hydrological process and take dynamic assessment for different ecosystems.

幼儿园儿童健康知识与健康行为调查

中国公共卫生 , 1997,
Abstract: ?为了有针对性地开展好幼儿园的健康促进工作,我们于1996年5~7月对443名在园儿童进行了健康知识与健康行为现况的本底测查。现将结果报告如下。
3~5岁幼儿家长健康知识水平及其影响因素

中国公共卫生 , 1997,
Abstract: ?要搞好幼儿园的健康促进工作,家庭的配合和作用是十分重要的。为了了解幼儿家长的健康知识水平、需求和影响因素,我们于1996年6月在山西省太原市进行了本次研究。
多维项目反应理论的计量模型、参数估计及应用
Multidimensional Item Response Theory: Psychometric Models, Parameter Estimation and Application
 [PDF]

, 朱新立,
Advances in Psychology (AP) , 2015, DOI: 10.12677/AP.2015.56048
Abstract: 多维项目反应理论是现代心理测量理论的新发展,文章对多维项目反应理论的计量模型、参数估计及应用进行了综述,认为多维项目反应理论模型开发应与认知结构相结合,马尔科夫链蒙特卡洛方法能较好地实现多维项目反应理论的参数估计,应加强多种题型、多种多维项目反应模型结合的参数估计研究,建议使用基于最大信息量法的多维项目反应理论模型计算测验的总分。
Multidimensional Item Response Theory (MIRT) is the new development of modern psychometric theories. The psychometric models, parameter estimation and application of MIRT are overviewed in this paper. It is concluded that the development of MIRT models should be combined with cognitive construct, the method of MCMC should be used to enhance the parameter estimation of MIRT, the research of the mixed MIRT should be strengthened, and the method of maximum information should be used to get the total score of a test.
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