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151.
王晓生 《中小企业管理与科技》2021,(11):118-119
大数据是基于云计算技术开发的一种集成技术,可以通过分析、计算和处理大量数据信息来实现这些数据的价值。然而,随着大数据时代的到来,现有的计算机网络面临着新的挑战,特别是网络安全问题逐渐浮现,计算机网络带来的安全隐患导致用户个人的隐私受到了威胁,所以有必要加强网络信息安全工作的部署,以尽早遏制这些安全风险,并确保计算机网络的安全运行。 相似文献
152.
毛钰涵 《中小企业管理与科技》2021,(8)
在企业业财融合的背景下,信息系统审计环境发生了巨大的变化。论文旨在指出企业业财融合背景下信息系统审计环境变化对审计的影响,分析现代信息审计的新发展和新趋势,进而剖析审计变化对审计工作者带来的挑战,提出应付这些挑战的解决方案。期望从理论方面拓展和创新理论思想,从实践方面为当代信息系统审计提供新的思考和思路,强化审计的增值作用,也有助于企业对信息系统的风险进行有效的监管。 相似文献
153.
随着时代发展,独居、年轻化已成为租房人群的关键词。观念的升级和住房租赁政策的完善,使得90后的置业观悄然改变。经过市场调查,市面上还没有针对大学毕业生这一群体的长租公寓,多数是针对有一定经济能力的上班族。因此,大学毕业生的住房需求仅仅通过政府采取措施远远无法满足。论文从国家的宏观政策及市场微观细分因素中的人口因素、地理因素、行为因素等方面对“不期而寓”——青年城市配套综合体进行了分析,为项目的推进提供可靠的数据和科学性支持。 相似文献
154.
周奕汝 《中小企业管理与科技》2021,(10):97-98
随着社会的发展,会计信息对投资者、企业,甚至是整个国家经济都有着举足轻重的影响。但由于多种原因,当前我国中小企业会计信息失真现象普遍存在,严重影响了中小企业经营决策的制定和我国经济发展。为此,在对中小企业会计信息现状和会计信息失真主要表现及原因分析的基础上,提出了针对该现状的治理对策。 相似文献
155.
This paper examines the impact of public news sentiment on the volatility states of firm-level returns on the Japanese Stock market. We firstly adopt a novel Markov Regime Switching Long Memory GARCH (MRS-LMGARCH), which is employed to estimate the latent volatility states of intraday stock return. By using the RavenPack Dow Jones News Analytics database, we fit discrete choice models to investigate the impact of news sentiment on changes of volatility states of the constituent stocks in the TOPIX Core 30 Index. Our findings suggest that news occurrence and sentiment, especially those of macro-economic news, are a key factor that significantly drives the volatility state of Japanese stock returns. This provides essential information for traders of the Japanese stock market to optimize their trading strategies and risk management plans to combat volatility. 相似文献
156.
Investors delegating their wealth to privately informed managers face not only an intrinsic asymmetric information problem but also a potential misalignment in risk preferences. In this setting, we show that by tying fees symmetrically to the appropriate benchmark investors can tilt a fund portfolio toward their optimal risk exposure and realize nearly all the value of managers’ information. They attain these benefits despite an inherent inefficiency in the choice of the benchmark, and at no extra cost of compensating managers for exposure to relative-performance risk. Under certain conditions, benchmark-adjusted performance fees are necessary to prevent passive alternatives from dominating active management. Our results shed light on a recent debate on the appropriate fee structure of active funds in contexts of high competition from passive funds. 相似文献
157.
We analyse a disregarded environmental policy instrument: a switch in government expenditure away from energy (or other natural
resources) and toward a composite good which includes energy-saving expenditure. We first develop two variants of an analytical
general equilibrium model. A composite good is produced with constant returns to scale, and energy is imported or produced
domestically with diminishing returns, yielding a differential rent to its owners. The government purchases energy and composite
goods from private firms. Such a policy unambiguously increases employment. It also raises private consumption and welfare
under two conditions: (i) it is not too costly and (ii) the initial share of the resource is smaller in public spending than
in private consumption, or the difference is small enough. We then run numerically a model featuring both importation and
domestic production of energy (oil, gas and electricity), for the OECD as a whole. Simulations show that employment, welfare
and private consumption rise. We provide magnitudes for different parameter values.
Earlier versions of this paper have benefited from conference participants at the European Council for an Energy-Efficient
Economy, International Society for Ecological Economics World Congress, CIRED seminar and EUREQua environmental economics
seminar. We especially thank Michèle Sadoun and two anonymous referees. The usual disclaimer applies. 相似文献
158.
Summary. We analyze an infinite horizon model where a seller who owns an indivisible unit of a good for sale has incomplete information
about the state of the world that determines not only the demand she faces but also her own valuation for the good. Over time,
she randomly meets potential buyers who may have incentives to manipulate her learning process strategically. We show that
i) the seller's incentives to post a high price and to experiment are not necessarily monotonic in the information conveyed
by a buyer's rejection; and ii) as the discount factors tend to one, there are equilibria where the seller always ends up
selling the good at an ex-post individually rational price.
Received: January 6, 1999; revised version: July 15, 2000 相似文献
159.
Cecilia Vergari 《Journal of Economics》2005,86(2):161-182
In technology adoption, herd behaviour can lead to a suboptimal outcome as shown, among others, by Choi (1997). However, empirics
find little support for the idea that a less efficient technology can conquer the market and lock out a more efficient one.
Accordingly, we improve and generalize Choi's results, by introducing an additional source of uncertainty: the economic environment.
We investigate how the economic environment can affect herding and consequently the efficiency of the technology choice. The
result is a smaller adoption bias. In the limit, firms may optimally experiment with the new technology that turns out to
be social welfare improving. 相似文献
160.
We axiomatize a subjective version of the recursive expected utility model. This development extends the seminal results of Kreps and Porteus (Econometrica 46:185–200 (1978)) to a subjective framework and provides foundations that are easy to relate to axioms familiar from timeless models of decision making under uncertainty. Our analysis also clarifies what is needed in going from a represention that applies within a single filtration to an across filtration representation.Part of this research was conducted when Ozdenoren visited MEDS in Fall 2003. We thank Tapas Kundu, Costis Skiadas, Jean-Marc Tallon and Tan Wang for helpful discussions and also thank audiences at Koc University, Northwestern University, the CERMSEM conference “ Mathematical Models in Decision Theory” at Universite Paris I, and the FUR XI conference on foundations and applications of utility, risk and decision theory 相似文献