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1.
This study aimed to investigate land use planning around airports, by employing Remote Sensing (RS) and Geographic Information Systems (GIS), in conjunction with an optimization algorithm using an Integrated Noise Model (INM) software, to establish the potential effects of aircraft noise at Imam Khomeini International Airport (IKIA) in Tehran. We also checked for land use compatibility with the noise levels around IKIA and the residents' reaction to the noise. The research was carried out in three stages: a) the establishment of Strategic Noise Map (SNM) scenarios of the airport operation in the years 2011, 2020 and 2030 using the INM software; b) the assessment of the results with emphasis on the study area land uses and application of RS and GIS and the exposure of residents at different levels of environmental noise; and c) the assessment of the intensity of aircraft noise annoyance at various times of day and night. The results indicated that developing IKIA together with the residential development will increase airport noise. Hence proper management and control of noise at IKIA is essential.  相似文献   
2.
张天问  吴明远 《旅游学刊》2014,29(10):51-60
追求幸福是个体生存的根本动机,当旅游日益成为人们享受幸福生活的重要表达时,旅游研究有理由探讨旅游与幸福感的关系。以扎根理论为研究工具,以旅游博客的博主为研究对象,系统分析旅游过程中旅游者身心感受的变化。研究发现,旅游的根本动机是寻找和收获旅游幸福感。旅游者从居住地世俗生活状态进入旅游环境,通过休闲、娱乐、教育、逃避、美感和移情过程,达到消遣、逃逸、认知、审美和移情的目的;享受从生理感知、心理变化和灵性提升不同层级的生命状态,获得深刻的人生经历,再回到居住地惯常环境的历程,实现从世俗到"神圣"再归于平凡的生命状态转换。旅游前美好期待体验、旅游中福乐体验、旅游后温馨回忆体验,成为旅游幸福感的时间构成;享受闲适生活、获得旅游福乐体验、提升积极情绪、减弱不良情绪、感受人际美好,进而提升人生境界,是旅游幸福感的重要内容构成。因此,旅游服务实际上应起始于旅游行程前,绽放于旅游过程中,延伸至旅游活动后。旅游服务必须持高度的人文情怀,以发于心、形于外的贴心关照才能给予旅游者一段幸福的人生经历。  相似文献   
3.
The research germinates from the statement that the cities have to solve the impacts due to freight transport in order to improve their sustainability implementing sets of city logistics measures. But city logistics measures involve several actors and choice dimensions. It is therefore important to have methods and models able to assess the effectiveness of the measures to be implemented. The current models were mainly developed to simulate some aspects of urban freight transport, and are not able to forecast many impacts of implementing traffic and transportation measures at an urban scale.This paper presents a modelling approach that tries to point out the relations existing among city logistics measures, actors and choice dimensions. It comprises three model sub-systems to estimate the quantity O–D matrices by transport service type (e.g. retailer on own account or wholesaler on own account or by carrier), the delivery O–D matrices by delivery time period, and the vehicle O–D matrices according to delivery tour departure time and vehicle type.This modelling system is a multi-stage model and considers a discrete choice approach for each decisional level. It was first tested using some data collected in the inner area of Rome, including traffic counts and interviews with retailers and truck-drivers. The model estimations were also compared with the experimental ones, and quite satisfactory results were obtained.  相似文献   
4.
我国资源衰退型城市经济增长乏力,在不同程度上陷入了"资源诅咒"困境,而成功地建立战略性新兴产业基地是破解"资源诅咒"的关键。目前,我国资源衰退型城市战略性新兴产业基地主要采用外生型和内生型发展模式,但两者的实践效果均不理想。依据我国资源衰退型城市的特点实施混合型发展模式,可以推动战略性新兴产业基地顺利地建成,以突破"资源诅咒"困境。  相似文献   
5.
职业发展是高校辅导员最为关心的问题,关系到辅导员队伍的稳定和学生的健康成长.本文以北京财贸职业学院辅导员的职业发展为研究对象,采取多种方式,重点分析高职院校辅导员职业发展的基本状况、有利条件和制约因素,并在此基础上提出构建高职院校辅导员职业发展的“苗圃式”、“扇骨型”模式.  相似文献   
6.
We use factor augmented vector autoregressive models with time-varying coefficients and stochastic volatility to construct a financial conditions index that can accurately track expectations about growth in key US macroeconomic variables. Time-variation in the models׳ parameters allows for the weights attached to each financial variable in the index to evolve over time. Furthermore, we develop methods for dynamic model averaging or selection which allow the financial variables entering into the financial conditions index to change over time. We discuss why such extensions of the existing literature are important and show them to be so in an empirical application involving a wide range of financial variables.  相似文献   
7.
This paper studies an aid allocation rule used by major development agencies, and investigates optimal allocations when recipients are neoclassical economies undergoing transition dynamics. When recipients face aid absorption constraints, allocations that favor poorer recipients are not always optimal, contrary to what is assumed in assessments of donor performance. The most quantitatively significant factors that determine the optimal sensitivity to recipient characteristics are the generosity of the aid budget and the extent of absorption constraints. In neoclassical recipients, aid can only accelerate growth where there is already growth, so the optimal rule places little weight on growth and optimality is largely a matter of balancing recipient need against absorption constraints.  相似文献   
8.
The present study examines the location of emergency rescue problems for urban ambulance and railway emergency systems. The proposed model considers probabilistic rescue demand, independent busy fractions of ambulances, and the corresponding risk levels in railway segments. We formulate the proposed model using fuzzy multi-objective programming and solve it using a generic algorithm and a non-dominated sorting genetic algorithm-II. Computation results are analyzed by applying the model to a real-world Taiwan railway system. Analytical results demonstrate that a proper adjustment of the rescue resource location improves rescue effectiveness for railway rescue and urban medical service demand.  相似文献   
9.
大学英语教学生态模式研究   总被引:1,自引:0,他引:1  
生态语言教学观是近几年西方学者将生态学理论与社会文化理论相结合而形成的。它为外语教学模式的研究提供了新的视角和更广阔的空间。大学英语教学生态模式通过对生态化教学内容和方法的选择将教师、学习者、语言和环境和谐、高效地连接起来,有利于提高英语教学质量。  相似文献   
10.
We report on an experiment comparing compulsory and voluntary voting institutions in a voting game with common preferences. Rational choice theory predicts sharp differences in voter behavior between these two institutions. If voting is compulsory, then voters may find it rational to vote insincerely, i.e., against their private information. If voting is voluntary so that abstention is allowed, then sincere voting in accordance with a voter's private information is always rational while participation may become strategic. We find strong support for these theoretical predictions in our experimental data. Moreover, voters adapt their decisions to the voting institution in place in such a way as to make the group decision accuracy differences between the two voting institutions negligible. The latter finding may serve to rationalize the co-existence of compulsory and voluntary voting institutions in nature.  相似文献   
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