The effect of ownership on telephone penetration

It is well known that telephone penetration (the number of telephones per 100 population) is strongly related to national income. This report examines whether telephone penetration is significantly influenced by type of ownership (ie whether the telephone system is owned and operated by a private company or a government organization) and by postal responsibility (ie whether the telephone system is run by the same organization which runs the postal system). Economic theory and evidence from other industries suggest that private ownership increases output, and one might guess that postal responsibility would tend to restrict telephone penetration - but are these hypotheses correct and are the effects significant? The author concludes that telephone penetration is significantly more responsive to per capita GDP and to population density in private systems than in government-owned systems. Joint responsibility for postal systems has no significant effect on telephone penetration.     

The effect of the Telefonica–BellSouth merger on the Argentine cellular telephone market

The aim of this paper is to evaluate the effects of the merger between Telefonica and BellSouth, which took place in December 2004, in the Argentine cellular telephone market. In this market the merger under analysis is horizontal. The evaluation is carried out by performing a demand estimation, using the PCAIDS model, and a marginal cost estimation, using supply prices and the elasticities inferred from the previously estimated demands. With those results, a merger simulation is run under different hypotheses related to possible marginal cost reductions. The merger is found to be able to lower supply prices for relatively small marginal cost reductions. This is basically due to the fact that the individual firms’ demands are highly elastic, and that the cross elasticity between the brands affected by the merger is relatively small.     

The structure of telephone tariffs

This paper compares the structure of telephone tariffs adopted by three types of organisation: government-owned systems responsible for both posts and telephones, government-owned systems responsible for telephones alone, and privately-owned telephone systems. It is found that privately-owned systems are significantly more likely to adopt three or more peak-load pricing periods. They are also more likely to differentiate tariffs by category of subscriber, and to offer lower rates for shared lines, but these differences are only significant if private telephone systems are compared with government systems responsible for both posts and telephones. Postal responsibility alone has little or no effect on these aspects of tariffs. The paper thus provides limited support for the view that ownership systematically affects behaviour.     

The role of the telephone in economic development

The author investigates the telephone's role as a contributory agent in economic development. Cross-sectional time series data for 60 nations over 13 years were used to determine how the telephone might make its contribution to economic development. Path analysis and cross-lagged correlation techniques indicate that the telephone does contribute to economic development. This contribution appears to come from the telephone's support of the organization of economic activity.     

The imbalances of telephone traffic for the United States

The US posts a large and growing deficit in international telephone services, a phenomenon often blamed on the accounting rate system. Using data for international calls between the US and 148 foreign destinations between 1991 and 1997, this paper finds that the increasing payment deficit for the US is associated with decreasing accounting rates. In other words, the international revenue settlement is related more to imbalances in telephone traffic than to accounting rates. The econometric model shows that growing asymmetries in teledensity, market concentration, and income levels between the US and the rest of the world explain the imbalances. Therefore, the appropriate solution to the payment deficit in telephone services is to focus on long-term economic factors that determine the flow of traffic.     

Duopoly and competition: The case of American cellular telephone

The designation of local duopoly mar ket structure for the American cellular telephone industry offers an unusual opportunity to observe the relationship of duopoly and market performance. A study of the first 28 markets to offer cellular service in the United States found that forms of competitive behav iour were evident in every market, but the intensity of competition varied widely. In nearly every market, prices declined during the six-year period. Although duopoly appears to have facil itated price competition, the wide vari ation in performance from market to market indicates that factors other than market structure strongly influence the behaviour of the firm.     

The consumer loss of the minimum duration for mobile telephone calls

This article estimates price elasticities of demand for the duration of mobile telephone calls for Portugal, as well as the monetary loss per consumer of the existence of a minimum duration of calls. The demand for the duration of calls is estimated using a Tobit model for panel data with individual random effects. The elasticity of demand is found to be small and to vary across firms. At current prices, the average duration of calls ranges between 101 and 109 s, while the estimated average length of calls without minimum duration ranges between 63 and 66 s. Hence, the existence of a minimum duration for calls results in a monetary loss of 35–40% of the average invoice.     

Effects of degrees of acceptance and awareness on a rate system for lowering mobile bills

South Korea has the highest mobile bills among the OECD countries, and there is strong public demand in the country to reduce expenditure amounts. In response, the South Korean government and mobile carriers have implemented measures such as a “Smart Choice Service,” data-centered plan, and 20% discount scheme in order to reduce mobile bills. However, it is unclear whether these systems have actually led to such a reduction. The present study analyzes quantitatively how people's acceptance and awareness toward rate systems reduce or do not reduce mobile bills, based on the results of a survey conducted here. More specifically, to solve the endogeneity problem of saving behavior's effect on mobile bills, the study adopts the instrumental variables of degree of acceptance and awareness of systems relating to mobile bills. The results show that acceptance and awareness of the system do affect savings behavior and thus mobile bills. If the degree of savings behavior (affected by acceptance and awareness) goes up one step on a seven-point Likert-type scale, there is an average 8.28% savings effect on mobile bills. Thus, this study shows that degrees of acceptance and awareness of the rate system do affect mobile bills.     

The impact on broadband access to the Internet of the dual ownership of telephone and cable networks

In Portugal, until recently, the telecommunications incumbent offered broadband access to the Internet, both through digital subscriber line and cable modem. We estimate the impact on broadband access to the Internet of the structural separation of these two businesses. Using a panel of consumer level data and a random effects mixed logit model, we estimate the price elasticities of demand and the marginal costs of broadband access to the Internet. Based on these estimates, we simulate the effect of structural separation on prices and social welfare. Our estimates indicate that structural separation would cause a substantial welfare increase. These results raise questions about the policy of some countries of allowing the dual ownership of telephone and cable networks.     

The mixed blessing of a deregulatory endpoint for the public switched telephone network

Receiving authority to dismantle the wireline public switched telephone network (PSTN) will deliver a mixture of financial benefits and costs to incumbent carriers and also jeopardize longstanding legislative and regulatory goals seeking ubiquitous, affordable and fully interconnected networks. Even if incumbent carriers continue to provide basic telephone services via wireless facilities, they will benefit from substantial relaxation of common carriage duties, no longer having to serve as the carrier of last resort and having the opportunity to decide whether and where to provide service. On the other hand, incumbent carriers may have underestimated the substantial financial and marketplace advantages they also will likely lose in the deregulatory process. Legislators and policy makers also may have underestimated the impact of no longer having the ability to impose common carrier mandates that require carriers to interconnect so that end users have complete access to network services regardless of location.This paper will identify the potential problems resulting from prospective decisions by National Regulatory Authorities (NRAs), such as the United States Federal Communications Commission (FCC), to grant authority for telecommunications service providers to discontinue PSTN services. The paper also will consider whether in the absence of common carrier duties, private carriers providing telephone services, including Voice over the Internet Protocol (VoIP), voluntarily will agree to interconnect their networks. The paper will examine three recent carrier interconnection issues with an eye toward assessing whether a largely unregulated marketplace will create incentives for carriers to interconnect networks so that consumers will have ubiquitous access to PSTN replacement and other broadband services.The paper concludes that private carrier interconnection models and information service regulatory oversight may not solve all disputes, or promote universal service public policy goals. Recent Internet interconnection and television program carriage disputes involving major players such as Comcast, Level 3, Fox, Cablevision and Google point to the possibility of increasingly contentious negotiations that could result in balkanized telecommunications networks with at least temporary blockages to desired content and services by some consumers.     

The cost of telephone service: An international comparison of rates in major countries

An exhaustive analysis of all 1979 telephone calls in the US Bell System determines market baskets of telephone services consumed by residential subscribers and by business subscribers. Individual calls are classified according to duration, distance, hour and day of week, and type of service. The annual cost of purchasing these market baskets is evaluated using the complete rate structures of nine countries. Telephone service is least expensive in the US and only slightly higher in Canada. Costs in Sweden, the UK and Italy are moderately higher than the USA. The highest rates are found in Japan, the FRG, France and Australia.     

中国首个魔兽主题公园未经授权或面临侵权指控

1月16日,位于中国常州的中国首个魔兽主题公园近日再度引起关注。中国常州魔兽主题公园于2012年夏天开园。这个令人惊叹的魔兽公园分为两部分,主体部分以"魔兽世界"为主题,还有一部分园区以"星     

谈采掘一线区队长对安全生产的作用

煤矿采掘一线的带班区长是煤矿井下安全生产的骨干。由于他们处在井下安全生产最前沿，是现场安全生产的直接指挥者，其一言一举将会对现场安全生产工作起着举足轻重的作用。     

The effect of competition on eBay

I examine the effect of competition on eBay Motors. I specify a simple model of auction choice and show that the expected transaction price falls with an increase in the number of competitors. I then test for this effect using data from 5,500 auctions for Chevrolet Corvettes. To address potential endogeneity of the level of competition, I introduce an instrument which takes advantage of the unique features of eBay. Results indicate that an additional competitor leads to a 6% reduction in the final transacted price ($960 for the average car). Further, I provide evidence that this effect is due to the thinning of the bidder market rather than dynamic bidding.     

住宅小区选址评价指标体系和模型分析

文章首先从影响住宅小区选址评价的因素--社会政治因素、经济因素和环境因素入手,建立了住宅小区选址评价指标体系,分析了指标体系中的各项指标。运用数学方法构建了住宅小区选址决策模型,阐明了如何用层次分析法确定各指标的权重,以及如何运用定性与定量相结合的分析方法确定评价指标的数值。     

The effect of CEOs on firm performance

The extent to which CEOs influence firm performance is fundamental to scholarly understanding of how organizations work; yet, this linkage is poorly understood. Previous empirical efforts to examine the link between CEOs and firm performance using variance decomposition, while provocative, nevertheless suffer from methodological problems that systematically understate the relative impact of CEOs on firm performance compared to industry and firm effects. This study addresses these methodological problems and reexamines the percentage of the variance in firm performance explained by heterogeneity in CEOs. The results of this study suggest that in certain settings the ‘CEO effect’ on corporate‐parent performance is substantially more important than that of industry and firm effects, but only moderately more important than industry and firm effects on business‐segment performance. Copyright © 2008 John Wiley & Sons, Ltd.     

The effect of car sharing on car sales

Free-Floating Car Sharing is a potential substitute to private car ownership. Its staggered rollout in German cities is exploited with a difference-in-difference methodology using an original administrative panel dataset on car registrations to estimate the effect of Free-Floating Car Sharing on new car sales. One car sharing vehicle reduces annual new car sales by three vehicles. This effect is driven by a reduction in sales of small, compact and medium-sized car models.     

The effect of advertising on the distribution-free newsboy problem

Advertising is very important for the newsboy problem because the shelf-life of the newsboy product is short and advertising may increase sales to avoid overstocking. In this paper, models to study the effect of advertising are developed for the distribution-free newsboy problem where only the mean and variance of the demand are known. As in Khouja and Robbins (2003), it is assumed that the mean demand is an increasing and concave function of advertising expenditure. Three cases are considered: (1) demand has constant variance, (2) demand has constant coefficient of variation, and (3) demand has an increasing coefficient of variation. This paper provides closed-form solutions or steps to solve the problem. Numerical results of the model are also compared with those from other papers. The effects of model parameters on optimal expenditure on advertising, optimal order quantity, and the lower bound on expected profit are derived or discussed.     

The effect of supplier's market orientation on manufacturer's trust

Recent studies show that manufacturing firms can select suppliers according to suppliers' market-oriented behaviors. Based on market orientation literature and research on inter-firm relationships, a model is developed to examine the impact of supplier's market orientation on manufacturer's trust. The framework is tested using Structural Equation Modeling and the data are from dyadic manufacturer and supplier relationships in U.S. firms. The results show that supplier's market orientation is significantly related to manufacturer's trust, which affects the manufacturer's long-term orientation toward the supplier. Discussions and implications for managers are presented at the end of the article.