检索结果-南通市图书馆

Asian Agricultural Research 2011年第4期3卷 83-87页

作者： meng Jing,HOU Ju-kai college of Economics and management,Guizhou normal university,Guiyang 550001,China

According to the data concerning consumption and income in 55 Years of Statistics Chronicle of New China,China Statistical Yearbook,by using econometric model,this paper expounds the reason of shortage of residents’ consumption demand in China and tests the difference of marginal propensity to consume of China's urban-rural *** results show that the urban residents’ marginal propensity to consume is greater than rural residents’ marginal propensity to consume in China,but the urban residents’ marginal propensity to consume tends to decline,while the rural residents’ marginal propensity to consume tends to *** terms of urban-rural income structure,consumption structure and consumption of consumer durables,this paper analyzes the reason of the change of urban-rural residents’ marginal propensity to consume,and it can be described from following 3 aspects:first,urban residents’ income is mainly wage and salary,while urban residents’ income is mainly operating net *** urban residents are conservative towards the expected income,while rural residents are relatively optimistic towards the expected income;second,in comparison with rural residents’ consumption structure,the urban residents’ consumption structure has big proportion of unessential expenditure,so the income elasticity of consumption is big;third,the urban residents’ traditional consumer durables approach saturation,while the rural residents’ traditional consumer durables are still at the period of increase,and the urban residents’ purchase of emerging consumer durables is inhibited,with great *** on research results and actual situation,this paper puts forward that the key of spurring increase of China's consumption demand is to expand consumption demand of rural residents.

关键词： Marginal Propensity to Consume Consumption demand

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

全纳教育的后现代性分析

外国教育研究 2009年第2期36卷 16-19页

作者：李芳邓猛华中师范大学教育学院湖北武汉430079

后现代主义是当代一股重要的文化潮流,具有广泛的影响。20世纪90年代提出的全纳教育就深受其影响。全纳教育具有后现代主义多元、感性、合作、开放等优点,但其缺陷也是显而易见的。在实践全纳教育的过程中,各国和各地区应该充分考虑自... 详细信息

后现代主义是当代一股重要的文化潮流,具有广泛的影响。20世纪90年代提出的全纳教育就深受其影响。全纳教育具有后现代主义多元、感性、合作、开放等优点,但其缺陷也是显而易见的。在实践全纳教育的过程中,各国和各地区应该充分考虑自己的文化传统和现实土壤,通过过滤机制进行批判地吸收,而且更应该通过交替的解构和重构,对全纳教育进行不断地完善。

关键词：后现代主义全纳教育后现代性

DISCUSSION ON THE MECHANISM OF ENTERPRISE’S INNOVATION INTEGRATION

在线全文

学校读者我要写书评

暂无评论

DISCUSSION ON THE MECHANISM OF ENTERPRISE’S INNOVATION INTE...

STUDY ON HARVESTED POPULATION WITH DIFFUSIONAL MIGRATION

2005年中国机械工程学会年会

作者： meng Hao, WANG Yanhui, HE Jiankun (School of Public Policy & management, Tsinghua university, Beijing, 100084 college of Environmental Resources & Tourism, Capital normal university, Beijing, 100037)

＜正＞The research on innovation from the perspectives of system and system theories has become an important thread. Based on analyzing the relative knowledge of innovation integration, this paper discusses the internal mechanism of enterprise’s innovation integration by means of wood-barrel principle. This will help to make further research about enterprise’s innovation integration.

关键词： enterprise innovation innovation integration innovation-integration barrel mechanism

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2001年第2期14卷 139-148页

作者： FAN meng WANG Ke (Deportment of Mathematics, Northeast normal university, Changchun 130024, China) ZHANG Yujuan ZHANG Shuwen LIU Huimin (Department of Mathematics, Anshan Teacher’s college, Anshan 114005, China) 东北师范大学吉林长春 130024 鞍山师范学院辽宁鞍山 114005

This paper is devoted to the study of the dynamical behavior and harvesting problem of an exploited population with diffusional migration, for which a protective patch is established. We examine the effects of protective patch and harvest on the population resources and conclude that the protective patch is effective for the conservation of population resources and ecological environment, though in some cases the extinction can not be eliminated. The dangerous region, the parameters domains and the typical bifurcation curves of stability of steady states for the considered system are determined. The optimal harvest policy for the considered population is made also. The explicit expressions are obtained for the optimal harvesting effort, the maximum sustainable yield and the corre- sponding population density. Our results provide a theoretical evidence for the practical management of biological resources.

关键词： Protective patch diffusional migration harvest.

Analysis of the management Policy and Comprehensive Benefit of Agriculture in the Rural Area:A Case Study on Pujiang County,China

在线全文

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2008年第11期7卷 1403-1412页

作者： fang Bin meng Ying college of Land management School of Geography Science Nanjing Normal University Nanjing 210046 P.R.China

To solve the problems of the poverty in rural areas and raise the output efficiency of agriculture, policy is the primary factor. Guiding by good policies, the design of agricultural structure and management technology are the two main technical supports for agricultural development. The authors apply the model to determine the consequences of four so-called poverty alleviation strategies：（i） intensification of production, （ii） diversification of livestock production, （iii） land expansion, and （iv） an exit from agriculture, with a set of regional poverty and biodiversity indicators. Diversification seems to be the most promising poverty reduction strategy, but requires an efficient use of animal manure in cropping systems to avoid environmental problems. Improved nutrient management in cropping systems is effective in reducing the regional nitrogen surplus, but less effective in increasing per capita income. The exit strategy is beneficial for reducing poverty and achieving biodiversity goals, but may have important social consequences, which are not addressed in this study. Further reduction of rural poverty is hampered by labor constraints during the harvesting period of high value crops, such as vegetables and fruits, which calls for research and development in the field of agricultural mechanization.

关键词： diversification intensification LP sustainability ecosystem approach

Imitation Learning Based Real-time Decision-making of Microgrid Economic Dispatch Under Multiple Uncertainties

在线全文

学校读者我要写书评

暂无评论

Journal of Modern Power Systems and Clean Energy 2024年第4期12卷 1183-1193页

作者： Wei Dong Fan Zhang meng Li Xiaolun fang Qiang Yang School of Automation Hangzhou Dianzi UniversityHangzhou 310018China college of Electrical Engineering Zhejiang UniversityHangzhou 310027China

The intermittency of renewable energy generation,variability of load demand,and stochasticity of market price bring about direct challenges to optimal energy management of *** cope with these different forms of operation uncertainties,an imitation learning based real-time decision-mak-ing solution for microgrid economic dispatch is *** this solution,the optimal dispatch trajectories obtained by solving the optimal problem using historical deterministic operation patterns are demonstrated as the expert samples for imitation *** improve the generalization performance of imitation learning and the expressive ability of uncertain variables,a hybrid model combining the unsupervised and supervised learning is *** denoising autoencoder based unsupervised learning model is adopted to enhance the feature extraction of operation ***,the long short-term memory network based supervised learning model is used to efficiently characterize the mapping between the input space composed of the extracted operation patterns and system state variables and the output space composed of the optimal dispatch *** numerical simulation results demonstrate that under various operation uncertainties,the operation cost achieved by the proposed solution is close to the minimum theoretical *** with the traditional model predictive control method and basic clone imitation learning method,the operation cost of the proposed solution is reduced by 6.3% and 2.8%,respectively,overa test period of three months.

关键词： Energy management imitation learning datadriven decision economic dispatch

Stimuli-responsive nanocarriers for bacterial biofilm treatment

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2022年第2期41卷 482-498页

作者： meng Ding Wei Zhao Ling-Jie Song Shi-fang Luan State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese of AcademyChangchun 130022China college of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China School of Chemistry and Chemical Engineering Yantai UniversityYantai 264005China National Engineering Laboratory of Medical Implantable Devices Key Laboratory for Medical Implantable Devices of Shandong ProvinceWEGO Holding Company LimitedWeihai 264210China

Bacterial biofilm infections have been threatening the human’s life and health globally for a long time because they typically cause chronic and persistent *** antibiotic therapies can hardly eradicate biofilms in many cases,as biofilms always form a robust fortress for pathogens inside,inhibiting the penetration of *** address the issues,many novel drug carriers emerged as promising strategies for biofilm *** them,stimuli-responsive nanocarriers have attracted much attentions for their intriguing physicochemical properties,such as tunable size,shape and surface chemistry,especially smart drug release *** on the microenvironmental difference between biofilm infection sites and normal tissue,many stimuli,such as bacterial products accumulating in biofilms(enzymes,glutathione,etc.),lower pH and higher H_(2)O_(2)levels,have been employed and proved in favor of“on-demand”drug release for biofilm ***,external stimuli including light,heat,microwave and magnetic fields are also able to control the drug releasing behavior *** this review,we summarized recent advances in stimuli-responsive nanocarriers for combating biofilm infections,and mainly,focusing on the different stimuli that trigger the drug release.

关键词： Nanocarriers Stimuli responsive Bactericidal Biofilm eradication Drug release

Visual chiral recognition of 1,1＇-binaphthol through enantioselective collapse of gel based on an amphiphilic Schiff-base gelator

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2017年第2期11卷 231-237页

作者： Xuhong Zhang Haimiao Li Xin Zhang meng An Weiwei fang Haitao Yu college of Chemistry and Materials Science Hebei Normal University Shijiazhuang 050024 China

A novel gelator that contained both Schiffbase and L-lysine moieties was synthesized and its gelation behavior was tested. This gelator can form gels in various organic solvents. The resulting gel can be applied as a fascinating platform for visual recognition of enantiomeric 1 -（2-hydroxynaphthalen- 1-yl）naphthalen-2-ol （B1NOL） through selective gel collapse. In addition, the mechanism for the reaction of the gel with chiral BINOL was investigated by scanning electron microscope and 1H nuclear magnetic resonance.

关键词： gelator Schiff base chiral recognition gel formation gel collapse

Synthesis,Crystal Structure and Luminescent Properties of a Novel Zinc(II) Complex of N-Acetyl-L-glutamic Acid and Imidazole Ligands

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2006年第11期25卷 1375-1379页

作者： CHENG meng-Qi MA Lu-fang WANG Li-Ya WANG Jian-Ge Department of Chemistry Luoyang Normal University Luoyang 471022 China Department of Chemistry A nshun Teacher＇s College Guizhou 561000 China

A novel complex [Zn（Im）2（A-glu）]-0.5H2O（Im = imidazole, A-glu = N-acetyi- L-glutamic acid） has been synthesized from the reaction of A-glu with Zn（CH3COO）2·2H20 in the presence of Im at 65 ℃, and structurally characterized by single-crystal X-ray diffraction. The complex crystallizes in tetragonai, space group P43212 with a = b = 8.9078（6）, c = 43.458（6） A, C26H36N10O11Zn2, Mr = 795.39, V= 3448.3（6） A^3, De = 1.532 g/cm^3, Z = 4,μ（MoKα） = 1.461 mm^-1, F（000） = 1640, the final R = 0.0453 and wR = 0.0992. X-ray analysis reveals that the crystal structure is constructed by mixed iigands. A-glu adopts the bis-monodentate coordination mode linking two adjacent metal ions to form a one-dimensional chain. Zinc（Ⅱ） ions are four-coordinated with a distorted tetrahedral geometry. Luminescent properties of the complex have been inves- tigated.

关键词： crystal structure N-acetyl-L-glutamic acid Zn(Ⅱ) complex luminescent properties