投入与人力资源质量问题研究

投入与人力资源质量问题研究袁利金（浙江大学工商管理学院，杭州３１００２７）ＡＳｔｕｄｙＯｎｔｈｅＰｒｏｂｌｅｍｏｆＩｎｖｅｓｔｍｅｎｔａｎｄＨｕｍａｎＣａｐｉｔａｌＱｕａｌｉｔｙＹｕａｎＬｉｊｉｎ（ＺｈｅｊｉａｎｇＵｎｉｖｅｒｓｉｔｙ，Ｈａｎｇｚｈｏ...     

菲涅耳半波带法公式A_K=a_1/2±a_k/2中K值的范围

本文对在点光源照明情况下,用菲涅耳半波带法求考察点P合振幅的近似公式A_k=a_1/2±a_k/2中K值的适用范围进行了讨论,纠正了某些光学书籍中对K值范围加以限制的结论     

含表格函数的质点运动微分方程的数值解法

本文对质点在阻尼介质中运动的微分方程做了进一步的讨论,介绍了这组方程在实际求解过程中所遇到的困难及解决办法。     

Cloning and roles of goldfish maternal factor β-Catenin cDNA in embryonic development

Interaction between nucleus and cytoplasm has been focused in the field of animal embryonic development, in which study of maternal factors is required positively. β-Catenin, an important maternal factor in early embryogenesis, has been analyzed in its expression pattern and functions in this paper. We have cloned goldfish β-Catenin cDNA gene and compared it with zebrafish β-Catenin cDNA. High homology was found in cDNA and in amino acid sequences between them, 93% (2227/2384 bp) and 98.5% (768/780 aa) respectively. The expression pattern of β-Catenin by in situ hybridization and the roles of β-Catenin on embryonic development by co-injection of anti-sense RNA and reporter gene, EGFP have been investigated in the whole process of goldfish embryonic development. The results suggest that β-Catenin presents dynamic distribution, mainly locates at body axis, dorsal tissues, head and tail structures after being fertilized. The loss of β-Catenin activity would cause serious destruction of embryo in dorsal tissues and in anteroposterior axes, and leads embryos to die before larva get hatched.     

再谈洪水等级的划分问题

洪水等级是用来定量刻划洪水强弱及其潜在破坏力量级高低的物理量,是对洪水灾害致灾因子强度的客观分级．在闵骞幂函数洪水等级公式基础上,提出了利用洪峰流量或洪峰水位的标准化值进行洪水等级划分,并对嘉陵江北碚站洪水等级进行了划分．     

Description of mechanism function about dehydration of cobalt oxalate dihydrate by multiple rates isotemperature method

0　IntroductionThetechnologyofthermalanalysishasbeenwidelyusedinthestudyofthermalbehaviorandthermalcharacterofsolidstatereaction ,theprimaryintentionofthermalanalysiskineticsistoestablishseparatevaluesofapparentactivationenergyE ,themostprobablemechanism g(α)andthepre exponentialfactorA ,meanwhilethedeterminationofg(α)hasgraduallybeenthefocusofthisfield .Inthisfield ,therearemostlygeneralkineticsmethodsused presently ,suchasCoats Redfern’s[1 ] integralmethod ,Achar’s[2 \〗differentialmet…     

Optimization of short-pulse GPR transmit antenna

By analyzing the current distribution of Bow-Tie amerma used in short-pulse ground penetrating radar, the methods of antenna load and driving are presented in this paper to reduce strength of reflective wave both at antenna end and excitation point. The numerical simulation results show the strength oi reflective wave is smaller than -55dB comparing with the driving wave when the methods are adopted.     

广告的效果构成与广告创意及其实施与控制

广告效果由广告的刺激强度、广告价值笼络力和广告购买决策驱动力三个层面构成,沿着这三个方向进行广告创意并进行有效的实施与控制,是保证广告效果的必然途径。其中,把握好广告背景和心理“差补效应”对实现广告创意及其实施与控制的有效性尤为重要。     

热带西太平洋和东印度洋对ENSO发展的影响

分析了从1955～1998年44a热带西太平洋次表层海温距平资料,指出在这一期间共发生了11次E1 Nino事件,这些事件的初始海温正距平无一例外地都在 "暖池"次表层160 m附近生成,发展到一定强度,到西太平洋出现异常的持续西风距平后,暖的海温距平沿着气候的温跃层向东向海表传播,经过1 a左右的时间,传播到赤道东太平洋海表的E1 Nino 3或1、2海域形成通常认为的El Nino事件.进一步分析1960～1999年的850 hPa风场指出,在热带西太平洋西风距平爆发前,赤道东印度洋已经有距平西风持续维持了2 a左右(西南季风),然后距平西风快速地向东发展产生热带西太平洋的距平西风,或真正的强西风,致使西太平洋出现E1 Nino爆发不可缺少的条件之一,在这40 a中,这一过程对所有的El Nino事件无一例外.同样的分析方法也用到这44 a中的La Nina事件,冷的海温距平也都首先在"暖池"的次表层形成,然后沿着温跃层向东向表层传播,在热带西太平洋出现东风前,印度洋也早已是持续的东风.