我国房地产价格发展趋势研究

 本文从房地产价格的相关理论出发，主要从房地产需求、房地产供给、房地产金融和房地产宏观调控等角度对影响房价的因素进行了分析，并从实证角度分析了各因素对房价的影响。本研究运用近10年房地产价格季度数据和时间序列模型对房地产价格发展趋势进行预测，最后提出房地产价格发展预警和稳定房价的建议。     

基于BP人工神经网络的磨料水射流切割深度模型

在已知的磨料水射流切割混凝土实验数据的基础上,应用BP人工神经网络理论,并且借助MATLAB神经网络工具箱,建立磨料水射流切割深度模型.模型中包括的射流参数有射流压力、靶距、磨料粒径、磨料流量、磨料喷嘴直径、磨料喷嘴长度及横移速度.通过模型预测结果与实验结果的比较,表明模型具有一定的精度.     

诜置谘芯克?410011长沙骨转换指标;;

本文扼要综述了骨转换指标和BMD在治疗骨质疏松中的监测频率和最小显著变化(LSC),以及两者与骨折风险的关系,它对于指导临床监测治疗骨质疏松具有重要价值。Bone turnover markers and bone mineral density monitoring therapy osteoporosis and their relationship with fractureWU Xiyu, WU Xianping, LIAO Eryuan. Institute of Metabolism and Endocrinology, The Second Xiang-Ya Hospital, Central South University, Changsha 410011,ChinaBone turnover markers and bone mineral den     

Social Competence with Peers in Third Grade: Associations with Earlier Peer Experiences in Childcare1

The early developmental antecedents of individual differences in children's social functioning with peers in third grade were examined using longitudinal data from the large‐scale National Institute of Child Health and Human Development (NICHD) study of early child care. In a sample of 1,364 children, with family and child factors controlled, the frequency of positive and negative peer interactions in childcare between 24 and 54 months and the number of hours spent in childcare peer groups of different sizes (alone, dyad, small, medium, large) predicted third graders' peer competence at three levels of analysis: individual social skills, dyadic friendships, and peer‐group acceptance. Children who had more positive experiences with peers in childcare had better social and communicative skills with peers in third grade, were more sociable and co‐operative and less aggressive, had more close friends, and were more accepted and popular. Children with more frequent negative experiences with peers in childcare were more aggressive in third grade, had lower social and communicative skills, and reported having fewer friends. When children spent more time in small‐sized peer groups in childcare (four or fewer children at 24 months of age up to seven or fewer at 54 months), they were more sociable and co‐operative in third grade, but their teachers rated them as more aggressive, suggesting that such children may be more socially outgoing and active both positively and negatively. Like those who spent more time in small peer groups, children who spent more hours in medium‐sized groups received higher ratings for peer aggression by their third‐grade teachers. Children who spent more time with one other child in childcare or in small peer groups had fewer classroom friends in third grade as reported by the teacher but not according to maternal report or self‐report. There were no significant associations between the amount of time children spent in large childcare‐based peer groups and third‐grade peer social competence.     

robability is obtained as the va

algebraic equation that depends on the cumulant generating function (CGF) of the performance variable. A method for calculating the saddlepoint using random samples of the performance variab     

超声场在细胞层次上的生物学效应及其分子机制

作为一种强物理因子,超声的生物学作用一直备受关注,随着生物学的发展,人们对超声生物学现象及其机理的理解逐渐深入。重点综述了超声场在细胞层次的生物学效应,总结了不同参数的超声波在不同介质环境中对细胞的增殖的促进和抑制作用以及对细胞结构与功能的影响,并在分子层面上尝试对超声的生物学效应得机理给予解释。结合实验结果,对超声生物学效应的可能物理机制进行了初步探讨,并对该课题的研究前景进行了展望。     

论受刑人人格权利的保护

受刑人人格权的保护是受刑人权利保护的重要内容,受刑人人格权不因受刑而丧失或分离,是维护其独立人格的必备权利。但由于受刑人的人身自由受到限制,其人格权的保护也必然受到限制,受刑人人格权的保护不仅要对物质型的人格权利予以保护,还要对精神型的人格权利的予以保护。以不断改善受刑人格权利的保护状况。     

立普妥对老年充血性心力衰竭MS患者血清CRP和LDL-C的影响

目的探讨CRP水平和充血性心力衰竭（CHF）、代谢综合征（MS）程度之间的关系,以及应用立普妥对CHF代谢综合征预后的影响。方法观察120例CHF代谢综合征患者在常规应用心衰治疗药物的基础上,给予立普妥干预前后血清CRP和LDL-C的变化。另选30例无心衰MS患者为对照组。结果心衰代谢综合征患者CRP、LDL-C水平均明显高于无心衰代谢综合征患者（P〈0.05）相关分析显示CHF患者的CRP水平和心衰程度呈正相关（r=0.14,0.21,0.32,0.39,P〈0.05）。CHF患者的LDL-C水平和心衰程度亦呈正相关（r=0.21,0.33,0.46,0.50,P〈0.05）。药物干预组立普妥治疗前与治疗后比较,LDL-C水平有明显降低（P〈0.05）。常规治疗组治疗前与治疗后比较,LDL-C水平无明显变化（P〉0.05）。药物干预组患者给予立普妥干预治疗4,8周后比较CRP水平均有显著降低（P〈0.01）,且与应用时间的长短呈正相关（r=0.11,0.34,P〈0.05）;常规治疗组患者治疗前、后比较,CRP水平无明显变化（P〉0.05）。结论CRP可以作为CHF代谢综合征患者预后评估的重要指标之一。     

太阳能喷射式制冷系统能耗与经济性分析

选用大金的1P挂壁机FTXD25DV2C,对蒸气压缩式制冷循环(VCRC)和太阳能喷射式制冷循环(SERC)进行了能耗比较.能耗从火用和一次能源能效比(PEER)方面分析,SERC的(火用)效率为0.065,VCRC的火用效率可以达到0.392 1.SERC在集热器和喷射器中能源的利用率不高,(火用)损失最大.VCRC的一次能源能效比为2.60,而与此相比SERC的一次能源能效比为5.26.但是即使SERC的使用寿命是VCRC的3倍,SERC的初投资的年度化成本依然比VCRC高出三分之一.     

健美操课实施过程中应注意的几个问题

健美操课已经成为学校体育教学的重要组成部分,提高健美操课的质量,在实施中就应该掌握健美操课的特点,把握健美操课的结构和注意事项。