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991.
由于军事侦察任务的复杂性不断提高,且侦察方式逐渐向多无人机协同的方向发展,而任务规划是无人机执行侦察任务的关键技术,因此研究多无人机协同侦察任务规划方法具有重要意义。根据侦察对象的不同将其分为“点对点”协同侦察和“点对面”协同侦察两种任务模式。对于“点对点”协同侦察,对其目标分配算法与航迹规划算法的原理、优势与不足及改进方法进行了分析,介绍了航迹平滑的常用方法。对于“点对面”协同侦察,从环境信息是否可知的角度对当前的侦察方法进行了分析并总结。最后指出了未来多无人机协同侦察的发展趋势为多无人机携带多种载荷对环境未知的区域进行多角度覆盖侦察。 相似文献
992.
LI Yang;TONG Meng-hua 《经济体制改革》2024,(4):175-182
Financial mismatch seriously reduces the ability of financial services to serve the real economy and restricts the high-quality development of the economy.However, there is no clear evidence whether it promotes the debt default risk of corporates.Based on the micro data of Chinese A-share listed companies from 2008 to 2022, this paper systematically explores the impact and mechanism of financial mismatch on the debt default risk of corporates by measuring the level of financial mismatch burden for corporates,and then explores the moderating effect of digital transformation.The results showed that the financial mismatch significantly increase the level of debt default risk for corporates, and this effect is mainly realized by changing the debt style, reducing the efficiency level, and promoting the financial asset allocation behavior of corporates.Further research found that the effect of financial mismatch is more prominent among corporates with high growth characteristics or in areas of poor economic development.In addition, the digital transformation of corporates can effectively weaken the effect of financial mismatch on the debt default risk, and this effect has a long-term dynamic feature.In view of this, it is necessary to continuously deepen the market-oriented reform of the financial system and promote the digital transformation of corporates to improve the financial accessibility and allocation efficiency, thereby effectively reducing the debt default risk of corporates. 相似文献
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994.
推动制造业与金融服务业深度融合,有助于制造业转型升级和经济高质量发展。本文利用2009—2018年制造业上市公司数据,实证考察产融结合对企业全要素生产率的影响机制。结果表明,与控制组相比,产融结合对制造业企业全要素生产率提升具有显著的促进作用;异质性研究表明,相对国有企业、规模较大的企业而言,非国有企业、中小企业产融结合对全要素生产率的影响更为明显。进一步分析发现,产融结合增强企业投资对投资机会的敏感性程度,由此促进企业资本配置效率的提升,这表明产融结合通过资本配置效率驱动企业全要素生产率提升。研究结论为推动中国产融结合、提升全要素生产率、实现经济高质量发展提供了政策依据。 相似文献
995.
The predictability of stock returns is often assessed using classical statistical significance from predictive regressions. Statistical inference, however, can belie the economic importance with which investors regard various predictors. This paper examines the influence that predictors have on an investor's optimal portfolio allocations. The results show that return predictability is sufficient to induce horizon effects in optimal allocations. After incorporating estimation risk, however, little evidence of predictability remains. We also assess the relative importance of three predictor variables. While dividend yield is the most important predictor, optimal allocations are also sensitive to the term spread and the relative bill rate. 相似文献
996.
Yasemin Ozturk 《Applied economics》2013,45(51):5609-5622
This article investigates the relationship between health status and time allocation decisions of individuals. Although many studies address impacts of health on labour supply, few studies explore associations of health status with non-market work activities. Using a nationally representative sample from a recent Turkish Time Use Survey, this article employs Seemingly Unrelated Regression (SUR) framework to estimate multiple equations of various time use categories. Consistent with literature, empirical results indicate that higher levels of self-reported health status (SRHS) are associated with more time spent in market work. However, better health level is negatively correlated with time spent in leisure and sleep. There is mixed evidence between self-reported health status (SRHS) and time spent on non-market work. There is a negative weak association between health and time devoted to personal care. Finally, demographics such as gender, age, education and marital status display correlations with time allocation of Turkish individuals. 相似文献
997.
In the context of team production, this paper studies the optimal (deterministic and stochastic) information allocation that implements desired effort levels as the unique Bayesian equilibrium. We show that under certain conditions, it is optimal to asymmetrically inform agents even though they may be ex ante symmetric. The main intuition is that informing the agents asymmetrically can be effective in avoiding “bad” equilibria, that is, equilibria with coordination failure. 相似文献
998.
999.
全球经济走向与产业演化正逐渐呈现多元化、体系化、合作化趋势。我国经济进入新常态,经济发展转型已刻不容缓,战略性新兴产业作为经济转型升级的“排头兵”,在扩大内需基础上不断提升国际竞争力已成为必然。“一带一路”战略促成的地缘经济新格局,为我国战略性新兴产业国际竞争力的塑造带来了机遇,也提出了挑战。应通过“一带一路”战略的深入推进,打破国际既得利益集团对中国高端产业输出和关键要素输入的封杀,打通沿线国家和地区间硬件和软件层面互联互通的芥蒂,连点成面,立面为体,构建大空间资源整合新体系;要适应沿线国家(地区)国情(区情)及发展状况的非均质性,采取个性化、多样化国际竞争力培育措施,发挥广义资本要素作用,以诚意推动产能转移和合作,注重软权力建设,掌握信用评级主动权。 相似文献
1000.
本文引入控制权的分配,建立了一个不对称信息下创业者和风险投资家合资组成创业企业的融资决策模型。结论表明,控制权分配显著地影响了风险投资中创业者和风险投资家之间的博弈均衡,风险投资家寻求获得必要控制权的努力,使创业者以部分控制权的转移为代价获得了较为优越的融资条件;控制权的均衡分配取决于创业者与风险投资家之间信息不对称的程度,信息不对称的程度越大,分配给风险投资者的控制权越多。 相似文献