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Search Results: 1 - 10 of 38543 matches for " 盛佳智 "
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抗阻训练对达州市45~55岁肥胖男性的骨髓脂肪含量的影响
The Effects Form Resistance Training on Bone Marrow Fat Content of Obese Men of 45 to 55 Years Old in Dazhou City
 [PDF]

, 弓腊梅
Advances in Physical Sciences (APS) , 2015, DOI: 10.12677/APS.2015.34013
Abstract:
众多的研究已经表明骨髓脂肪含量与造血增生负相关,且随着年龄的增长骨髓脂肪含量比例逐渐增加,本文主要探讨抗阻训练对中年肥胖男性的骨髓脂肪含量的影响。研究对象:达州市11名45~55岁肥胖男性志愿参加此项研究。测试方法:采用核磁共振成像对受试者的腰椎2-4测试。结果:4周的运动干预,训练前后抗阻训练组的骨髓脂肪含量显著降低,对照组无显著变化。结论:抗阻训练降低了BMI的同时,减少了骨髓脂肪含量,抗阻训练可能是一种可行的、有效的激活造血的训练方式。
Many studies have shown that bone marrow fat content was negatively related to the hyperplasia of blood, and as the growth of the age of the bone marrow fat percentage increases gradually, this paper mainly discusses the effects of resistance training on bone marrow fat content of middle- aged obese men. Studies: 11 obese men of 45 to 55 years old volunteered to participate in the study. Methods: Magnetic resonance imaging was used for testing lumbar vertebrae 2-4. Results: After 4-week exercise intervention, bone marrow fat content of the resistance training group significantly reduced, while the control group had no significant change. Conclusions: The resistance training reduced the BMI as well as the bone marrow fat content; resistance training can be a feasible and effective training way for activating hematopoiesis.
基于增强回归树的房价影响因素分析—以波士顿地区为例
Factor Analysis of Housing Price Based on Boosting Regression Tree—Taking Boston as an Example
 [PDF]

, 潘东东
Statistics and Applications (SA) , 2016, DOI: 10.12677/SA.2016.53030
Abstract: 房价是反映一个地区经济社会发展水平和状况的重要指标,对其影响因素以及影响的方式和程度进行探究具有理论价值和现实意义。增强回归树是近年来机器学习领域备受关注和推崇的一种非参数建模分析方法,具有建模效率高、模型结果易于解读等优势。本文以美国波士顿地区的历史房价数据为例,采用增强回归树方法来探寻该地区房价的主要影响因素,并比较不同因素在回归树中的相对影响强度。本文得出的结论可为我国某些中心城市的房价调控政策提供参考。
Housing price is a very important index which can reflect the economic and social development level and situation of a certain region or city. It is of great theoretical value and practical meaning to study important factors influencing housing price as well as their influence patterns and magnitude. Boosting regression tree has been recently developed as one of the most prevalent nonparametric modeling methods in the fields of machine learning, which has desirable properties such as high efficiency as well as easy-interpretation. In this paper, we take the housing price data in Boston as an example and try to analyze factors determining housing price based on Boosting Regression Tree method. We identify some relatively significant factors by comparing their relative importance in the model and also investigate their influence patterns. Results in this paper could be reasonably extended to housing price researches of some Chinese first-tire cities.
持续发展与地理学之管见

地理科学 , 1995,
Abstract: 影响持续发展的主要问题是人口、资源、环境和发展在分布失衡状态下的不协调关系,解决此问题的关键是加快人类社会的全面发展和人口、能量、物质、信息的合理流动.面对持续发展问题,地理学必须将地域差异规律和分布不平衡规律统一起来,将流、网络、界线构成空间系统,并将流的建设——地理建设作为服务于人类社会持续发展的舞台.
《禹贡》——世界上最早的区域人文地理学著作

地理学报 , 1990, DOI: 10.11821/xb199004004
Abstract: 《禹贡》是中国最早的地理著作,本文从九州边界的确定、九州的区域研究模式、治山和治水的辩证关系与圈层地带结构模式的朦胧设计四个方面进行分析论述,认为《禹贡》是中国第一个奴隶制国家的国土综合整治开发建设总体规划,内分分区国土整治开发,分系统国土整治开发和国土整治开发战略。战略的最终目标是建立以华夏族为主的多民族统一国家。五服说在理论、内容、方法上,都显示了超前水平,具有一定学术价值和现实意义。本文认为它是世界上最早的区域人文地理学著作。
吴传钧院士的人文地理思想与人地关系地域系统学说

地理科学进展 , 1998, DOI: 10.11820/dlkxjz.1998.01.003
Abstract: 值吴传钧院士八十华诞(1918~1998)之际,本文谨以他的人文地理思想与人地关系系统学说为题来祝贺。他在人文地理学中系统阐发了人地关系、人地关系系统和人地关系地域系统思想,为中国人文地理学复兴确立了理论与实践结合的科学方法论,是我国最杰出的地理学大师之一,也是世界上知名的地理学家。
企业级应用系统综合管理平台的研究与实现
Integrated Management Platform for Enterprise Application System: Design and Implementation
 [PDF]

, 蒋忠新, 董苹苹,
Computer Science and Application (CSA) , 2013, DOI: 10.12677/CSA.2013.35042
Abstract:
随着国内企业网络规模的扩大,越来越多的企业认识到,除了要依靠设备本身和网络架构的可靠性之外,通过对网络中服务器的性能监控来保证整个系统高效、可靠地运行一样重要。本文设计并实现了一种基于CPMM模型的企业级应用系统综合管理平台,平台通过JMX(Java Management Extensions, Java扩展管理)SNMP(Simple Network Management Protocol,简单网络管理协议)WMI(Windows Management InstrumentationWindows管理规范)等技术对监控范围内所有服务器的详细运行情况进行监控,并根据监控信息进行判断,当性能变差或存在其他问题时及时预警,告知可能会发生的故障。它为企业提供了一个综合的解决方案,使管理员不必再为每个IT资源准备不同的监控工具来保证整个系统高效、可靠地运行。
With the expansion of domestic enterprise network, more and more enterprises realize that, in addition to rely on the device itself and the reliability of the network architecture, to ensure the whole system run efficiently and reliably through monitoring the performance of network servers is important equally. In this paper, an enterprise-level application management platform based on the CPMM model was proposed. This platform integrates JMX (Java Management Extensions), SNMP (Simple Network Management Protocol) and WMI (Windows Management Instrumentation) to monitor the running state of all the servers in monitoring range, and judges whether the system has a poor performance or other problems according to the monitoring information and informs the fault to user. The platform provides a com- prehensive solution for enterprise to ensure the whole system run efficiently and reliably, which makes administrators not need to prepare different monitoring tools for different IT resources.
内皮细胞特异性RTK受体与血管生成
,刘旭
第三军医大学学报 , 2005,
Abstract:
财务重述、管理层权力与股价崩盘风险:来自中国证券市场的经验证据
Financial Restatements,Managerial Power and Stock Price Crash Risk:Evidence from Chinese Security Markets

,
- , 2017,
Abstract: 股市震荡引发投资者和监管层对股价崩盘风险的关注。从财务重述背后所反映的财务信息质量低下和公司治理失效出发,探讨其对股价崩盘风险的影响,结合管理层权力这一影响组织行为和产出能力的代理人特征,探讨其对财务重述与股价崩盘风险之间关系的影响。研究结果表明:相比未发生财务重述的公司,发生了财务重述的公司的股价崩盘风险明显更高;进一步纳入代理人特征——管理层权力后,发现代理人的这一特征对上述关系有明显的促进作用。
Stock market volatility led investors and regulators to be concerned about the stock price crash risk. From the view of financial restatements which reflect the low quality of financial information and corporate governance failures, we discuss its impact on the stock price crash risk. Combined with the managerial power which is one of the features of the agent that can affect the organizational behavior and output capacity, we explore its effect on the relationship between financial restatements and stock price crash risk. Our empirical research suggests that, compared to the company which the financial restatement did not occur, the company which restates its financial reports faces a greater risk of the stock price crash; with including the agent feature--managerial power, the results indicate that this feature of the agent plays a significant role in promoting the above-mentioned relationship.
用变裂缝单一尺寸试样确定大理岩的断裂韧度
,王启
工程力学 , 2007,
Abstract: 采用具有不同长度裂缝单一尺寸的中心圆孔平台圆盘试件,测定了大理岩的断裂韧度。基于Bazant的尺度律理论,根据有限元分析的结果拟合得到了无量纲能量释放率g(α0)的函数表达式,当无量纲裂缝长度α0=a0/R在0.28~0.51的范围时,与试件形状有关的函数g′(α0)/g(α0)的变化范围为1.0~5.8,能够满足Bazant尺度律公式中对脆性数β范围的需求。由试验结果得到了与试件尺寸无关的断裂韧度的真实值和断裂过程区长度cf。用该方法确定岩石的断裂韧度,能够避免使用较大尺寸的试件,以及为得到足够大的β值范围而使用两种或两种以上试件的准备和试验带来的困难。
轴流压气机叶片堵塞颤振的数值预测
明周
力学学报 , 1983, DOI: 10.6052/0459-1879-1983-5-1983-059
Abstract: 在多级轴流压气机的实际运行中,中间级和后面级叶片所发生的低负攻角堵塞颤振主要是弯曲振型。但现有文献只研究了扭转振型的叶片堵塞颤振。本文采用前一阶段发展的有限差分方法,预测到在高亚音进口Mach数、低负攻角条件下,跨音振荡叶栅弯曲振型堵塞颤振的发作。此外,还研究了一些几何参数及气动参数对于跨音叶栅弯曲振荡稳定性的影响。初步数值结果表明,激波的存在对跨音叶栅气动弹性稳定性的影响是显著的。
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