共查询到20条相似文献,搜索用时 46 毫秒
1.
对标准联盟中提供平台产品的核心企业来说,平台产品的技术创新活动是对整个联盟施加影响力的重大战略行为,对联盟内受此影响的成员企业来说,在平台产品技术创新中避免被淘汰,并抓住机会获得发展非常关键。使用事件研究法和线性多元回归法,分析开放手机联盟平台产品Android操作系统技术升级对成员企业产生的财富效应。结果表明,由核心企业所主导的平台技术创新对整个联盟能够产生明显的财富效应,采用多产品发布的方式引入新平台产品可以获得更好的效果。在面对平台产品技术创新时,不同研发能力的企业将获得不同的财富效应。如果企业研发投入强度较高,从事件中获得的累积超常收益率就较高,但是企业研发投入产出弹性对此有负向调节效应,需要企业决策者谨慎权衡研发投入规模。 相似文献
2.
文章通过构建成果共享型研发联盟合作研发博弈模型,探讨了成果共享型研发联盟成员在两种分配方式下的投资战略,分析了分配方式和研发技术风险如何影响成员投资战略。研究显示,按投入比例分配方式下,技术风险和市场收益越高,联盟成员期望投入越大,因此,成果共享型研发联盟比较适合高风险、高收益行业内的企业进行合作研发;按投入比例分配比平均分配更能刺激联盟成员多投入研发资源,因此,成果共享型研发联盟应尽量采用该方式分配收益。 相似文献
3.
文章构建行业内合作研发博弈模型,研究行业内集中研发联盟如何通过现实中常用利益分配策略的优选防范合作研发中的道德风险,激励成员提高研发投入,提高合作研发成功率。研究表明,市场收益和相持收益能有效激励联盟成员增大研发投入;比例分配下联盟成员研发投入高于平均分配,因此行业内研发联盟宜采用比例分配来规避道德风险,激励成员增大投入。 相似文献
4.
该研究手工收集整理2009-2018年沪深非金融类A股上市公司社会责任报告披露的能源消耗数据,以逆指标能源消耗强度作为企业能源利用效率的计量指标,理论分析与实证考察企业研发投入对其能源效率的影响.研究发现,企业研发投入对企业能源消耗强度具有显著的负向影响,表明企业研发投入有助于其提升能源利用效率.进一步研究发现,企业研发投入对其能源利用效率的提升效应在国有企业与低市场化进程地区企业中表现得较弱,揭示了上述提升效应对制度环境的依赖性. 相似文献
5.
该研究手工收集整理2009-2018年沪深非金融类A股上市公司社会责任报告披露的能源消耗数据,以逆指标能源消耗强度作为企业能源利用效率的计量指标,理论分析与实证考察企业研发投入对其能源效率的影响.研究发现,企业研发投入对企业能源消耗强度具有显著的负向影响,表明企业研发投入有助于其提升能源利用效率.进一步研究发现,企业研发投入对其能源利用效率的提升效应在国有企业与低市场化进程地区企业中表现得较弱,揭示了上述提升效应对制度环境的依赖性. 相似文献
6.
该研究手工收集整理2009-2018年沪深非金融类A股上市公司社会责任报告披露的能源消耗数据,以逆指标能源消耗强度作为企业能源利用效率的计量指标,理论分析与实证考察企业研发投入对其能源效率的影响.研究发现,企业研发投入对企业能源消耗强度具有显著的负向影响,表明企业研发投入有助于其提升能源利用效率.进一步研究发现,企业研发投入对其能源利用效率的提升效应在国有企业与低市场化进程地区企业中表现得较弱,揭示了上述提升效应对制度环境的依赖性. 相似文献
7.
文章构建了并行研发联盟合作研发博弈模型,研究了如何通过选择合理的收益分配方式来降低联盟成员的道德风险、激励其增大研发投入,促进合作研发成功。研究表明:市场收益率较低时,按投入比例分配方式下成员的投入高于平均分配,因此宜采用按投入比例分配方式;市场收益率较高时,分配方式对联盟成员投资策略影响很小,因此宜采用平均分配这种简单易行的方式;加强研发联盟成员间的沟通与交流增大研发溢出可以促使联盟成员增大投入。 相似文献
8.
文章以高层梯队理论和委托代理理论为基础,以2012年披露研发投入的深沪交易所创业板的356家公司为样本,对公司高管团队特征和企业研发投入强度之间的关系进行实证分析。研究发现高管团队的特征和企业的研发投入有显著的关系,其中高管团队的平均年龄、任期、女性高管的参与比与研发投入呈负相关;高管成员的受教育水平、技术专业背景、团队规模、股权激励和高管薪酬与研发投入呈正相关。本研究结果对提升企业技术创新有一定的理论与现实意义。 相似文献
9.
研发投入是企业技术创新的主要动力,而持续稳定的资金来源是企业研发投入的关键。文章以2009—2013年深市中小板科技型企业面板数据为样本,探究企业融资能力对研发投入的影响。分别以盈利能力、营运能力、偿债能力、成长能力、企业规模五个方面作为企业融资能力的代理变量,研究其对科技型中小企业研发投入的影响。结果表明,盈利能力对研发费用支出有显著的负向影响,但对研发人员投入有显著的正向影响;营运能力、偿债能力对研发费用支出和研发人员投入皆有显著的正向影响;企业规模、成长能力对研发费用支出和研发人员投入有显著的负向影响。进一步分析发现,融资能力与研发投入的关系受企业所处区域差异影响较显著。 相似文献
10.
11.
En este estudio se analiza el incumplimiento del salario mínimo durante el periodo 2003–2012 en diez países de Europa central y oriental con salario mínimo obligatorio nacional. A partir de los datos de EU‐SILC y la metodología propuesta por Bhorat, Kanbur y Mayet (2013), se cuantifica la incidencia y magnitud del incumplimiento. Se realizan análisis de regresión sobre determinantes individuales, laborales y macroeconómicos. Aunque la incidencia permanece relativamente baja, los trabajadores a los que se dirigen las políticas de salario mínimo parecen los más expuestos a su incumplimiento. Con el tiempo, una mayor incidencia se asocia a una razón más alta entre salario mínimo y salario medio. 相似文献
12.
Carl Grodach 《International journal of urban and regional research》2013,37(5):1747-1765
While a growing body of research analyses the functional mechanisms of the cultural or creative economy, there has been little attention devoted to understanding how local governments translate this work into policy. Moreover, research in this vein focuses predominately on Richard Florida's creative class thesis rather than considering the wider body of work that may influence policy. This article seeks to develop a deeper understanding of how municipalities conceptualize and plan for the cultural economy through the lens of two cities held up as model ‘creative cities’ — Austin, Texas and Toronto, Ontario. The work pays particular attention to how the cities adopt and adapt leading theories, strategies and discourses of the cultural economy. While policy documents indicate that the cities embrace the creative city model, in practice agencies tend to adapt conventional economic development strategies for cultural economy activity and appropriate the language of the creative city for multiple purposes. 相似文献
13.
María del Carmen Triana Pamela Gu Olga Chapa Orlando Richard Adrienne Colella 《人力资源管理》2021,60(1):145-204
This article reviews discrimination and diversity research published in Human Resource Management (HRM) over the past 60 years. While discrimination and diversity are very different constructs, it is often informative to study them together, because when people recognize each other's diversity, this can result in bias, stereotyping, and discrimination. We conducted bibliographic searches for terms related to discrimination and diversity as well as a manual search through every title and abstract published in HRM over the last 60 years to assess article relevance. The search resulted in 135 research articles with 136 unique studies (i.e., samples) which are reviewed in this article. Sex and race are the demographics that have been examined the most in HRM, while religion has been examined the least. Moreover, the number of studies examining lesbian, gay, bisexual, transgender, and queer (LGBTQ) employees in the workplace in HRM has grown quickly within the past 10 years, culminating in a recent meta‐analysis. Our review looks at some of the earliest research published, the most recent research published, and the overall trends we identified in the research over the years for both discrimination and diversity articles. We then make future research suggestions and recommendations to advance the study of discrimination and diversity in the coming years. 相似文献
14.
Despite the establishment of high-tech multinational enterprises (MNEs) in Ireland since the late 1950s, the country did not succeed in closing the technological gap with most of its EU counterparts. The weak National System of Innovation (NSI), and in particular low business and government R&D levels, combined with a lack of research and technology linkages between MNEs and indigenous firms, explain these poor results. However, the Shannon region in the West of the country presents some specific institutional characteristics that could theoretically make the region a strong technological enclave. The various actors in the region - i.e. the administrative, financial, political and research institutions, as well as the business organizations - have indeed infused a new type of economic development. After a brief review of the available concepts and models articulated around these actors and their interrelationships, the paper analyses whether the Shannon region, taken as an illustrative example, mirrors a specific economic and technological localized setting. The study is based on a survey of indigenous and foreign firms. 相似文献
15.
The Early History of the Cumulants and the Gram-Charlier Series 总被引:2,自引:0,他引:2
Anders Hald 《Revue internationale de statistique》2000,68(2):137-153
The early history of the Gram-Charlier series is discussed from three points of view: (1) a generalization of Laplace's central limit theorem, (2) a least squares approximation to a continuous function by means of Chebyshev-Hermite polynomials, (3) a generalization of Gauss's normal distribution to a system of skew distributions. Thiele defined the cumulants in terms of the moments, first by a recursion formula and later by an expansion of the logarithm of the moment generating function. He devised a differential operator which adjusts any cumulant to a desired value. His little known 1899 paper in Danish on the properties of the cumulants is translated into English in the Appendix. 相似文献
16.
When sampling a batch consisting of particulate material, the distribution of a sample estimator can be characterized using knowledge about the sample drawing process. With Bernoulli sampling, the number of particles in the sample is binomially distributed. Because this is rarely realized in practice, we propose a sampling design in which the possible samples have a nearly equal mass. Expected values and variances of the sample estimator are calculated. It is shown that the sample estimator becomes identical to the Horvitz–Thompson estimator in the case of a large batch-to-sample mass ratio and a large sample mass. Simulations and experiments were performed to test the theory. Simulations confirm that the round-off error due to the discrete nature of particles is negligible for large sample sizes. Sampling experiments were carried out with a mixture of PolyPropylene (PP) and PolyTetraFluorEthylene (PTFE) spheres suspended in a viscous medium. The measured and theoretical variations are in good agreement. 相似文献
17.
This paper evaluates the impact of service sector trade liberalization on the world economy by a ten-region, eleven-sector CGE model with import embodied technology transfer from developed countries to developing countries. Simulation results show that service sector trade liberalization not only directly affects world service production and trade, but also has significant implications for other sectors in the economy. The major channel of the impact is through inter-industry input-output relations and TFP growth induced from services imported by developing countries from developed countries, which may be embodied with new information and advanced technology. 相似文献
18.
Former industrial cities in the West are employing gentrification as urban policy. In these policies, women and families currently play an important role as gentrification pioneers. In my analysis of Rotterdam in the Netherlands, I propose the term genderfication to understand the gender dimensions of this process. Genderfication refers to the production of space for different gender relations. I analyse Rotterdam's urban planning program for becoming a ‘child‐friendly city’, which entails replacing existing urban dwellings with new, larger and more expensive ‘family‐friendly homes’ as a strategy for urban re‐generation. Urban re‐generation supplements regeneration in the form of material and economic restructuring, and refers to the replacement of part of the current population by a new and better suited generation. The ‘child‐friendly city program’ is considered in tandem with punitive ‘youth policies’. 相似文献
19.
Hierarchical Models in Environmental Science 总被引:6,自引:0,他引:6
Christopher K. Wikle 《Revue internationale de statistique》2003,71(2):181-199
Environmental systems are complicated. They include very intricate spatio-temporal processes, interacting on a wide variety of scales. There is increasingly vast amounts of data for such processes from geographical information systems, remote sensing platforms, monitoring networks, and computer models. In addition, often there is a great variety of scientific knowledge available for such systems, from partial differential equations based on first principles to panel surveys. It is argued that it is not generally adequate to consider such processes from a joint perspective. Instead, the processes often must be considered as a coherently linked system of conditional models. This paper provides a brief overview of hierarchical approaches applied to environmental processes. The key elements of such models can be considered in three general stages, the data stage, process stage, and parameter stage. In each stage, complicated dependence structure is mitigated by conditioning. For example, the data stage can incorporate measurement errors as well as multiple datasets with varying supports. The process and parameter stages can allow spatial and spatio-temporal processes as well as the direct inclusion of scientific knowledge. The paper concludes with a discussion of some outstanding problems in hierarchical modelling of environmental systems, including the need for new collaboration approaches. 相似文献