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1.
本文阐述了时间压缩信号及其频谱、各种差分信号的产生方法及频带压缩过程.最后对图象带宽为4.2MHz的TV系统用8.4MHz带宽传送三个TV信号的具体执行力式作了介绍. 相似文献
2.
文章从实证的角度,对我国彩电企业多元化发展战略与公司绩效之间的相关性进行研究,结果显示,企业总体多元化程度与资产回报率、销售利润率和净资产回报率的相关系数为负值,即多元化程度越高的彩电企业,其公司绩效越差。针对目前我国彩电企业盲目实施多元化战略的误区,文章提出了相关对策及建议。 相似文献
3.
本文从数理统计入手,给出了玻壳生产中更换产品前后合格率的关系公式,并和实际统计值进行了比较,有较好的符合,为科学量化分析提供了工具。并据此分析,不同尺寸的玻壳产品,当池炉系统的质量水平下降时,它们的合格率的差别也在扩大,并量可能会使得原先利润相对高的产品变得利润相对低。通过合理地计划产品品种的生产,可以获得更多的利润,降低单位成本。同时也阐明原有的新产品质量目标设定方法的不合理性,给出了质量目标设定的科学依据。 相似文献
4.
本文通过对近期热播的体育节目《城市之间》与《智勇大冲关》的分析,探讨体育电视节目对大众体育的影响,及其所反映出的新时期内我国大众参与体育活动的新特点。 相似文献
5.
An increasing number of households are equipped with Internet-enabled televisions (IETVs) that yield opportunities for online activities. This research contributes by investigating the motivational factors of consumers’ attitudes and intentions toward IETV shopping. A quasi-experimental study in the environmental context of a living room was designed to explore IETV shopping behavior. Findings indicate that utilitarian motivations are determined by characteristics of technology and hedonic motivations from the physical environment. Attitudes toward IETV shopping are primarily influenced by hedonic shopping motivations. Conclusions suggest that by providing an IETV shopping app, retailers would make online shopping more enjoyable and comfortable for consumers. 相似文献
6.
Hyunjoo Lee Author Vitae Daejoong Kim Author Vitae 《Technological Forecasting and Social Change》2010,77(3):514-523
By profiling demographic characteristics, perceived general adoption attributes, perceived value-based adoption attributes, motivational needs, mass media use, and content interest, this exploratory study examines the nature of four categories of mobile TV adopters — current, potential, continuous non-, and discontinuous user groups. Despite the limited sample size (N = 214), there are some meaningful findings. First of all, the non-adoption rate of mobile TV of the continuous non-, and discontinuous user groups is higher than the adoption rate of the current and potential user groups. Less than half of the respondents (N = 34) who had used TV on a mobile device were unwilling to use it again in the next twelve months, and almost half of those (N = 102) did not have the intention of using it within the coming year. The results suggest that the discontinuous group seems to have been dissatisfied with the actual mobile TV use when compared with their expectations and evaluations, while the potential user group is more likely to have high expectations and positive evaluations before the adoption and use of mobile TV. All user groups were unwilling to pay the fee, despite the current and potential user groups perceiving the exceptional values. No differences were found in the personality trait of innovativeness and mass media use behaviors among the four groups. 相似文献
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Victor B. KrengAuthor Vitae Hsi Tse WangAuthor Vitae 《Technological Forecasting and Social Change》2011,78(3):448-457
This study has investigated the dynamic competitive relationship between PDP TVs and LCD TVs by means of their quarterly shipments. The renowned Lotka-Volterra competition diffusion model has been adopted to conduct the empirical analysis with the Lyapunov function to carry out equilibrium and stability analysis, and estimate the domain of attraction which describes the trend and phenomenon of TV shipments. The results illustrate that there is good fitting performance while adopting this model. The competitive relationship can be viewed from the perspective that the LCD TV is the prey while the PDP TV is the predator. The possibility, nevertheless, for dropping the price of LCD TVs is an advantage of the attractiveness of the product which can be noted in higher growth rate than PDP TVs. With respect to the equilibrium stability analysis and estimated domain of attraction, 40- to 49-inch PDP TVs will not disappear from the market, but will generate a stable equilibrium with LCD TVs and sales volume presents simultaneous increase or decrease. In the supply and demand analysis, LCD TVs present a surplus of supply from 2008; therefore, how to conduct appropriate inventory management will be an emerging issue. 相似文献
9.
影视语言具有通俗易懂、口语性和跨文化等特点,翻译时,应把握作品主题,照顾影片风格,尽量保持影片的原汁原味,使其中的文化内涵和艺术效果得到体现。 相似文献
10.
欧阳小迅 《山东财政学院学报》2011,(1):103-108
电视购物是一种新兴的虚拟购物通道,近年来,越来越多的经营者加入这个行业,由此形成了以电视购物企业为核心的现代化供应链。在此背景下,本文通过对电视购物行业供应链进行全面分析,结合湖南电视台快乐购的发展状况,并借鉴国外电视购物行业的发展经验,针对国内电视购物整个供应链管理及其相对空白的售后服务等方面的社会责任问题,提出相应的解决措施,帮助电视购物企业及其供应链成员了解并主动承担社会责任,从而获得稳定长远的发展。 相似文献