全文获取类型
收费全文 | 12735篇 |
免费 | 416篇 |
国内免费 | 146篇 |
专业分类
财政金融 | 3572篇 |
工业经济 | 451篇 |
计划管理 | 2633篇 |
经济学 | 1941篇 |
综合类 | 1312篇 |
运输经济 | 90篇 |
旅游经济 | 128篇 |
贸易经济 | 1467篇 |
农业经济 | 607篇 |
经济概况 | 1096篇 |
出版年
2024年 | 46篇 |
2023年 | 273篇 |
2022年 | 244篇 |
2021年 | 401篇 |
2020年 | 549篇 |
2019年 | 392篇 |
2018年 | 339篇 |
2017年 | 462篇 |
2016年 | 441篇 |
2015年 | 460篇 |
2014年 | 861篇 |
2013年 | 1304篇 |
2012年 | 893篇 |
2011年 | 1084篇 |
2010年 | 764篇 |
2009年 | 741篇 |
2008年 | 809篇 |
2007年 | 722篇 |
2006年 | 742篇 |
2005年 | 519篇 |
2004年 | 349篇 |
2003年 | 254篇 |
2002年 | 160篇 |
2001年 | 122篇 |
2000年 | 97篇 |
1999年 | 73篇 |
1998年 | 52篇 |
1997年 | 28篇 |
1996年 | 24篇 |
1995年 | 23篇 |
1994年 | 19篇 |
1993年 | 13篇 |
1992年 | 12篇 |
1991年 | 10篇 |
1990年 | 1篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1985年 | 3篇 |
1984年 | 2篇 |
1983年 | 2篇 |
1982年 | 3篇 |
1981年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
金融危机对于任何国家来说都是可怕的灾难,它肇始于美国地产业的次贷危机,且转变成经济危机,对全球经济形成严重冲击,给多国带来了大量的失业和政治动荡的危机。金融在现代经济建设的过程中对引导资源配置、调节经济运行、维护国家经济安全发挥着重要的作用,因此,国家对金融制度的改革和发展尤其重视和关注。 相似文献
62.
中小商业银行在保持高利润前提下产生流动性风险与其资产负债业务构成的不对称性、业务拓展的不均衡性以及主动负债能力弱、市场竞争力弱等特点密不可分,在市场经济不断推进、银行竞争不断加剧的形势下,中小银行应进一步加强流动性风险管理,优化负债与信贷结构,深化网点建设,加大货币市场参与力度. 相似文献
63.
Dujuan Yang Harry Timmermans 《International Journal of Sustainable Transportation》2017,11(2):133-147
This article explores consumer investment choice in long-term energy conservation technology and assesses trade-offs in energy saving behaviour between the housing and transportation domains. The long-term energy conservation choice problem is conceptualized as a portfolio choice problem. Consequently, to measure trade-offs between investments in housing and transport options, a cross effects choice design is developed in which respondents were shown one or more alternate ways to reduce their current energy consumption: (1) investing in new technology in the house, such as solar panels; (2) exchanging the current car for a more energy efficient car; (3) buying a new energy-efficient car, such as EV or solar car; (4) moving house to reduce current travel distances. To help respondents linking these options to their current energy consumption, a new Web-based survey system (SINA) to implement and administer stated adaptation experiments was developed. The system was used to collect two sets of data. First, data about out-of-home and in-home energy consumption, together with detailed time use data, was collected. Second, using a cross effects design, respondents were asked to select a portfolio of energy-saving strategies in response to different energy pricing policy scenarios. Results reported in this paper are based on 572 respondents who completed the survey and responded to seven adaptation questions based on their current energy expenditures. A random parameters logit model is estimated to predict the probability of choosing a particular portfolio of energy-saving options. Estimation results indicate that individuals from different socio-demographic groups exhibit varied preferences. The saving option characteristics, especially cost related characteristics have significant effects on individuals' preferences. Moreover, the results also showed significant effects of choice set composition on energy saving options. Further, the energy pricing policies had showed mixed effects on individual's preferences. 相似文献
64.
We propose a measure of business risk in air travel demand at the route level that can reduce information asymmetry during route development negotiations between tourism destinations and airlines. Aviation-exposed risk (AER) conveys information about the level of uncertainty with regard to air travel demand from an airline’s perspective. Using AER, tourism destinations and air service development teams can evaluate their risks from the perspective of the airline and its network. From there, an assessment can be made as to the value of air services in certain circumstances, including whether a direct underwrite or risk share between airlines and destinations is viable and necessary. By applying a portfolio analysis to an airline’s network, we find evidence that AER does indeed mimic the actual capacity distribution of the network. This provides support for AER as a useful risk measure to be used in practice. 相似文献
65.
Putu Liza Kusuma Mustika Riccardo Welters Gerard Edward Ryan Coralie D'Lima Patricia Sorongon-Yap Suwat Jutapruet 《Journal of Sustainable Tourism》2017,25(8):1138-1158
Dolphin-watching tourism is growing globally. In developing countries, the typically low environmental awareness of operators and poorly enforced or non-existent regulations exacerbate risks to wildlife. Ecological indicators like behavioural responses are useful to assess wildlife tourism, but obtaining such data is slow and expensive. We modified the Driver–Pressure–State–Impact–Response (DPSIR) framework to rapidly assess the risk of dolphin-watching tourism harming, displacing or causing local extinction to dolphin populations, using human dimension data to complement limited ecological data. We assessed industries at seven dolphin-watching sites in six countries in Asia: Cambodia, India, Indonesia, Malaysia, Thailand, and the Philippines. All sites have reached or almost reached financial saturation except Cambodia and Malaysia. We find high risk to dolphins at the sites in India and Indonesia and intermediate risk at the site in Cambodia. Pending more ecological data, the risk at Thailand, the Philippines, and Malaysian sites might be low. Our analysis also indicates site-specific conservation recommendations for Driver, Pressure and Response. We suggest that the DPSIR framework is useful to assess the risk of a wildlife watching industry, even when the impact is uncertain due to insufficient ecological data. 相似文献
66.
Energy benchmarking in support of low carbon hotels: Developments,challenges, and approaches in China 总被引:2,自引:0,他引:2
Achieving effective and objective energy benchmarking for hotels is integral in fostering the sustainable development of the lodging sector. In this work, we reveal the major and minor streams of hotel energy benchmarking and ascertain that the most popular approach in benchmarking is normalized energy use intensity (EUI) based on floor level. Previous efforts to establish EUI indicators using subsystem average, data envelopment analysis (DEA), and regression technique are also studied. We propose that hotel energy benchmarking based on floor area is useful from the top-down management perspective. However, on a practical perspective, energy benchmarking based on facilities should be the first priority for hotel management or owners. Compared with the general energy benchmarking in the building sector, we find that the hotel sector lags behind in the adoption of computer modeling for benchmarking. 相似文献
67.
Chih-Ching Teng Jeou-Shyan Horng Meng-Lei Hu Liang-Han Chien Ying-Chun Shen 《International Journal of Hospitality Management》2012,31(1):199-208
This study develops and weights energy conservation and carbon reduction (ECCR) indicators for the hotel industry in Taiwan to create an instrument to help address climate change. Eighteen semi-structured interviews were conducted with senior hotel managers, environmental specialists, and government officials to identify the preliminary ECCR framework. An expert panel then was invited to review the structure of ECCR criteria and the compiled criteria in a structure for item modification. An analytic network process questionnaire survey was employed to determine the relative weights of the criteria. The data analysis reveals seven categories in the ECCR framework: communication and participation, top management commitment, energy, water, waste, building, and purchasing. A total of 32 indicators were identified and prioritized in terms of their relative importance to ECCR contributions. The results of this study suggest that the success of ECCR implementation depends primarily on management support and staff engagement. Hotel operators can improve their environmental management by initiating ECCR practices based on the proposed ECCR indicators. 相似文献
68.
经济条件、人口特征和风险偏好与城市家庭的旅游消费——基于国内24个城市的家庭调查 总被引:1,自引:0,他引:1
旅游者的旅游消费支出对旅游产业的发展至关重要。它是旅游者的经济条件、人口特征和行为特征等因素共同作用的结果。但国内现有的研究由于多采用宏观数据,缺少描述旅游者人口和行为特征的微观数据,对旅游消费支出的影响因素分析有失偏颇。文章采用2010年对中国24个城市的居民家庭进行调查收集到的旅游消费数据,综合考虑家庭的经济条件、人口特征和行为特征,以家庭为单位,采用广义线性模型定量研究了影响家庭旅游消费支出的影响因素。研究表明:除家庭资产和收入外,家庭对收入的预期显著影响家庭的旅游消费,这解释了旅游产业对宏观经济的变动比较敏感的原因。它折射的宏观经济意义是显而易见的:当经济不景气时,旅游业可能是率先遭受冲击的产业。反之,当经济向好发展时,旅游业也往往蒸蒸日上。以户主年龄作为代理变量,调查还发现城市家庭的旅游消费与家庭生命周期密切相关,当户主年龄在25~34岁时家庭旅游消费支出达到高峰。此外家庭的风险偏好也显著影响家庭的旅游消费支出。借鉴美国消费金融调查用分类变量测度风险厌恶的方法,文章发现风险厌恶程度越高的家庭越愿意将大部分收入用于储蓄,从而相应地减少旅游消费支出。由于家庭承受的风险多数无法对冲,因此提高风险厌恶程度较高的家庭的旅游消费,恐怕单靠旅游产业自身还无法解决,需要保险业等相关产业共同努力来创造一个较好的旅游产业发展环境。 相似文献
69.
文章采用参与式地理信息系统(PGIS)技术,模拟景区未来典型自然灾害风险情景,建立典型致灾因子强度与灾害风险情景对应关系;对旅游资源、旅游设施进行分类,分析游客居民景区内时空分布特征,建立致灾因子强度与景区承载体的脆弱性对应关系;最后通过拟合风险曲线,建立景区综合灾损模型并预测出多情景年均损失。综合景区利益相关方可接受风险,基于灾损和防灾成本进行风险决策。案例研究以九寨沟树正景群为例,模拟九寨沟在分别遭遇20、50、100、200、500、1000年一遇6种暴雨情景下引发泥石流的流速、流量和冲击力,建立6种情景泥石流与树正景群脆弱性关系;预测6种情景潜在损失和人员伤亡;结合可接受风险,提出九寨沟树正寨未来自然灾害防灾降险措施。 相似文献
70.
为了减小邻近既有下穿隧道深基坑施工风险及灾害损失,科学预防施工安全事故,提出了一种基于动态贝叶斯网络(DBN)的深基坑施工风险分析模型。首先,运用BWM(best worst method)确定准则的权重;其次,基于关联规则挖掘风险因素间的相互关系,并以此构建DBN结构模型;最后,以新建厦门北站地下一层社会连廊深基坑工程为例,对提出的方法进行有效性和适用性检验。结果表明:基坑围护结构的安全度在静态被评为“较高”和“极高”的概率分别为34.6%和36.1%,且此结果随着输入风险证据发生动态变化,运用反向推理也能迅速找出围护桩渗水风险;提出的模型能明确邻近既有下穿隧道深基坑施工风险传递过程中的关键风险点,并能进行动态风险预测以及事故后致因诊断,从而实现邻近既有下穿隧道深基坑施工风险的动态管控。所提出的优化DBN模型对工前风险评估、先验分析和风险诊断有较好的适用性和较高的准确性,可为邻近既有隧道深基坑施工过程中的安全管控提供有效的决策支持,大幅提高风险控制效率。 相似文献