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51.
Joseph P. Gatto Harry H. Kelejian Scott W. Stephan 《Information Economics and Policy》1988,3(4):283-309
Systems of demand equations are considered for at least two reasons. First, they offer a theoretical completeness, and second, they embody a number of restrictions which lead to a more parsimonious specification concerning the number of parameters. As it turns out, the quantity and quality of the data are often such that the demand systems considered are not restrictive enough in the sense that large numbers of parameters still remain which cannot be estimated with ‘great precision’. Paradoxically, the restrictions that are considered are often rejected by the data.In this paper we propose a system of random coefficient telecommunications demand equations in a panel data framework. These equations correspond to alternative ways (which have different costs) of placing a call. The system is formulated in such a way that it incorporates the homogeneity condition, as well as stochastic versions of the symmetry and weak separability restrictions. The stochastic versions are given in terms of moments and so they do not have to hold in each individual case. Under certain conditions they reduce to their deterministic counterparts. Finally, we empirically implement the model and compare the results to what they would be in a corresponding deterministic framework. 相似文献
52.
《Telecommunications Policy》2017,41(4):242-252
It has been argued that infrastructure unevenness rigidifies into more lasting structures of socio-economic and political privilege and advantage. This paper focuses on telecommunication infrastructure as the backbone of the fast-growing digital economy, and raises important questions about the early National Broadband Network (NBN) rollout in Australia. The paper asks whether there was any case of pork barrelling in the selection of early release sites that enjoyed a regional competitive advantage against other localities that had to wait several years to receive the infrastructure. The answer to this question then leads to a second question about the degree to which voting in the early NBN release sites has swung following the infrastructure rollout. In order to answer these questions the paper examines the voting patterns in the earlier NBN release sites versus all electorates in the Federal elections in 2007–2013 using the data available via Australian Electoral Commission. Findings show trends of politically targeted funding, followed by vote swing in the very next election. 相似文献
53.
杨洵 《中央财经大学学报》2008,(6):74-79
3G时代电信企业的竞争将沿着产业价值链展开。电信运营商只有积极有效整合产业链各个环节,进行协同运作,才能实现电信产业链中各利益相关主体共生多赢。本文运用产业价值链整合与重构基本理论方法,首先界定了基于电信产业链整合的价值创新内涵。其次,分析了电信产业价值创新系统演变趋势。最后,分析了电信产业模块化价值创新策略,构造了电信产业价值创新的分析框架,指出按照由低到高的层次,电信产业价值创新可分为三个层面,即产品层次模块化创新、企业层次模块化创新和产业层次模块化创新,并且分析了各个层次创新的具体策略。 相似文献
54.
提出了一种从客户关系价值和生命周期的角度出发,以中国电信的四个典型细分群体为对象,应用威布尔分布函数和曲线拟和的方法,研究电信客户的动态保持率,在此基础上计算出生命周期的时间参数。本文的研究对提升中国电信CRM管理具有一定的理论参考和实际应用价值,也可以为同类企业的客户关系管理提供借鉴。 相似文献
55.
基于企业内部价值链的“EVA导向”型绩效指标萃取方法——以电信运营企业为例的研究 总被引:1,自引:0,他引:1
随着国资委对央企进行经济增加值(EVA)考核的全面实行,各大央企开始逐步调整、甚至重建企业的绩效考核体系。结合通信行业特点,分析电信运营企业的价值创造流程,构建了企业内部价值链的关键路径。在深入研究EVA与各种财务指标逻辑关系的基础上,形成了影响企业EVA的核心指标体系,并建立各指标与电信运行企业内部价值链上关键节点之间的映射关系,从而提出了以EVA为导向的电信运营企业内部价值链模型,在此基础上,萃取绩效指标,为电信运营企业EVA绩效考核体系的构建提供了参考和借鉴。 相似文献
56.
本文用m-M/M/1队列模型来描述通信网交换节点特性,并设线路成本为其长度和容量的非线性函数。证明了通信线路总成本为其流的下凸函数和线路容量单元的下降函数,从而给出了通信网容量、流量分配的整体极小解及其路由选择方法。应用例子表明该设计是高效可行的。 相似文献
57.
我国电信业的竞争力在于电信企业,而电信企业的竞争力在于专业人才占有与有效使用。因此电信企业的人才流失是电信企业发展中必须关注的重要问题之一。 相似文献
58.
Telecommunication services are distinctive in that their adoptions are influenced by network effect resulting in the late take-off phenomenon and the critical mass problem. In this paper we examined the late take-off phenomenon in the diffusion process of telecommunication services. We first compared the parameters of the diffusion process of consumer durables with those of fax services in the US and Korea. By analyzing the parameters of a new diffusion model based on the threshold model proposed by Markus, we found that the late take-off phenomenon resulted from the low heterogeneity of the threshold distribution for the potential adopters. A simulation approach was proposed for the theoretical implication of the critical mass problem in the start-up telecommunications services. 相似文献
59.
This paper examines user perceptions of Activity-based costing (ABC) performance for three different types of system in a major information and communication provider in South East Asia. Few prior ABC studies have considered the effect of system type on ABC performance. The study draws on a survey of 54 developers and 181 users of 16 different ABC systems within the organisation to produce five performance constructs (cost accuracy, cost-benefit trade-off, ABC impact, information use, and decision action). The results show that both the development inputs and user performance perceptions varied with the type of system (embedded, stand-alone, ad-hoc). While embedded systems enjoyed far stronger inputs (e.g. top management support, rewards and recognition, task significance) and greater development team cohesion than stand-alone systems, they were perceived by users to perform significantly less well. These findings suggest that system type is an important factor in assessing ABC performance. 相似文献
60.
《Telecommunications Policy》2022,46(5):102344
This paper evaluates the efficiency frontier of 34 mobile operators from OECD countries and compares the performance of multinational companies and domestic companies between 2014 and 2018. Unlike most previous studies, the present paper relies on non-financial data for both input and output variables. It uses slack-based Data Envelopment Analysis (SBM DEA) to obtain the efficiency scores. The efficiency scores were compared for the statistically significant differences using Mann-Whitney U test. Our findings showed domestic companies to be more efficient than multinational ones regardless of their scale. The suggested explanation is that domestic enterprises are better at managing their resources and more familiar with their local market. The results also indicate that the primary source of inefficiency was inadequate utilisation of the available spectrum range. These empirical findings provide extra insight to the managers in the industry on possible steps to reduce the efficiency from the perspective of non-financial data. 相似文献