Information-based management mode based on value network analysis for livestock enterprises

ABSTRACT

With the development of computer and IT technologies, enterprise management has gradually become information-based management. Moreover, due to poor technical competence and non-uniform management, most breeding enterprises show a lack of organisation in data collection and management. In addition, low levels of efficiency result in increasing production costs. This paper adopts ‘struts2’ in order to construct an information-based management system for standardised and normalised management within the process of production in beef cattle breeding enterprises. We present a radio-frequency identification system by studying multiple-tag anti-collision via a dynamic grouping ALOHA algorithm. This algorithm is based on the existing ALOHA algorithm and uses an improved packet dynamic of this algorithm, which is characterised by a high-throughput rate. This new algorithm can reach a throughput 42% higher than that of the general ALOHA algorithm. With a change in the number of tags, the system throughput is relatively stable.     

A robust approach to estimating production functions: Replication of the ACF procedure

We study Ackerberg, Caves, and Frazer's (Econometrica, 2015, 83, 2411–2451; hereafter ACF) production function estimation method using Monte Carlo simulations. First, we replicate their results by following their procedure to confirm the existence of a spurious minimum in the estimation, as noted by ACF. In the population, or when sample sizes are sufficiently large, this “global” identification problem may not be a concern because the spurious minimum occurs only at extreme values of capital and labor coefficients. However, in finite samples, their estimator can produce estimates that may not be clearly distinguishable from the spurious ones. In our second experiment, we modify the ACF procedure and show that robust estimates can be obtained using additional lagged instruments or sequential search. We also provide some arguments for why such modifications help in the ACF setting.     

On the investment value of sell-side analyst recommendation revisions in the UK

Review of Quantitative Finance and Accounting - This study conducts a comprehensive investigation into the investment value of sell-side analyst recommendation revisions in the UK, using a unique...     

Toward a model of destination resident–environment relationship: the case of Gulangyu,China

This study tested an integrative model to better understand residents’ environmentally responsible behaviour (RERB) and willingness to sacrifice for the environment (WTS) using a sample of 430 residents on Gulangyu Island in China. Results show that destination environmental quality and eco-friendly reputation directly affected resident environmental identification and environmental commitment. Destination eco-friendly reputation directly influenced RERB and WTS. Both resident environmental identification and commitment directly affected RERB and WTS. Furthermore, environmental identification and environmental commitment fully mediate the effects of environmental quality on RERB and WTS, and partially mediate the effects of destination eco-friendly reputation on RERB and WTS.     

双元性创新与企业竞争地位——来自中国上市企业的经验数据

文章基于组织二元性理论、资源基础理论，探究了双元性创新与企业竞争地位的关系以及冗余资源的权变影响，并以2009-2015年我国上市企业为样本进行了实证分析。研究显示：探索式创新对企业竞争地位的影响具有"拐点效应"，呈正"U"型，利用式创新促进了企业竞争地位的提升；双元性创新的互补性降低了企业竞争地位，而平衡性则对企业竞争地位的提升产生了积极影响；财务冗余强化了双元性创新对企业竞争地位的促进作用，并能缓解利用式创新的负效应；人力资源冗余弱化了探索式创新对企业竞争地位的积极效应，但对利用式创新与企业竞争地位的关系却未表现出显著影响。统计结果在基于勒纳指数年度行业排名的面板排序模型和一阶差分模型中依然保持稳健。进一步分析发现，探索式创新与双元性创新互补性的积极作用具有"时滞效应"，利用式创新及双元性创新平衡性之积极影响存在差异化的效应周期。     

网络直播平台的盈利性分析 ——以快手短视频为例

2017年至今,以抖音和快手为代表的短视频成为用户常用的国民级APP.难忘的2020年已经过去,过去两年里快手电商的GMV增长了1000倍,快手直播带货的天花板不可限量.2020年10月30日快手与江苏卫视合作,"快手之夜"正式启动,这是双方平台共创打造的拥有无限快手元素、标签的超级晚会,相应的是直播电商在线消费"新爆点".快手短视频的盈利诀窍和模式到底是怎样的呢?本文从快手短视频所处的行业及公司进行剖析进而对其盈利模式、财务分析等方面进行盈利性分析.     

Trade liberalization,consumption shifting and pollution: Evidence from Mexico's used vehicle imports

This paper develops a model of used vehicle trade between the United States and Mexico, countries with different environmental regulations regarding vehicle emissions. We demonstrate that the United States, with its strict environmental regulations, has a motive to export used vehicles to Mexico, which impacts air pollution emissions from vehicle driving in Mexico. Using unique data on the import and registration of vehicles in Mexico after NAFTA, we find that Mexico's used vehicle imports reduce pollution emissions generated from vehicle driving mainly because of the technique effect, that is, model–age‐comparable vehicles imported from the United States emit less than those originally operated in Mexico.     

八字S轨迹无碳小车的设计结构和发车影响因素

根据全国大学生工程综合能力训练大赛中对势能驱动车赛项的要求,我们设计了一款仅有重力驱动的无碳小车,运用机械原理中解析法对凸轮进行设计,从动件采用摆动从动件和直动从动件并对比了不同从动件结构的优劣.实物小车在赛前的多次实验、Solidworks motion分析和赛场上的发车经验,总结出运行轨迹为八字S轨迹的无碳小车发车影响因素.     

The contrasting influences of incidental anger and fear on responses to a service failure

Customers’ disposition to register a formal complaint about an inferior product or poor service is often mediated by attributions of responsibility. However, the anger or fear that people happen to be experiencing for totally irrelevant reasons can also influence this disposition. Two field studies and four laboratory experiments indicate that when people feel angry at the time they encounter a service failure, they are more likely to blame the service provider for the failure and more likely to register a complaint. When they experience fear, however, they are uncertain about the cause of their misfortune and decrease their negative reactions relative to conditions in which fear is not experienced. The effects of these incidental emotions are evident both when a service failure is personally experienced and when it is only observed. These effects are eliminated, however, when individuals do not have the cognitive resources available to assess the reasons for the service failure and the conditions surrounding it.     

中国配偶退休的健康溢出效应与机制研究

基于家庭追踪调查(CFPS)2010-2016年非平衡面板数据,构建双模糊断点回归模型,在不同窗宽下实证研究了配偶退休对个人健康的溢出效应及家庭照料在其中的影响机制.研究表明:配偶退休显著提高了男性自评健康水平28％～44.3％,而显著降低了女性自评健康大约32％,影响机制是配偶退休后,丈夫得到更多配偶照料,妻子收入减少且加大了对丈夫的照料;配偶退休对男女心理健康的溢出效应显著为正向影响,锻炼频率是主要影响机制;对男女患慢性病情况,配偶退休没有显著影响.政府应重视家庭照料对健康养老的作用,给予女性退休人员更多健康管理服务与健康教育,推出家庭体育锻炼计划;支持并鼓励男性低龄退休人员重返劳动力市场;实施渐进式延迟退休政策,逐步普及智慧养老.