构建自主学习模式,提高商务英语函电课堂效率

商务英语函电是一门实用性很强的学科。在教师授课的同时,如何使学生最大限度地提高语言的运用能力及课堂效率,是非常值得探讨的。文章就此问题从理论到实践进行了探讨和研究,以提高学生的自主学习能力和商务英语函电的课堂效率。     

全湿法日光粉与其发光

卤磷酸钙日光灯粉3Ca_3(PO_4)_2、Ca(F,Cl)_2:Mn/Sb通常是用干法制成,而本文报导的卤粉则是用与干法具有不同的工艺—全湿法所制得,全湿法制得的日光粉,发光效率高,光色基本符合要求,化学性能较稳定,制作工艺简单,价格便宜,具有研究和推广价值。     

Irregular and regular LDPC codes with high spectrum efficiency modulation in image transmission over fading channel

1.INTRODUCTION Low densityparity check(LDPC)codes,firstintroduced byGallagerin1963,havenearShannonlimitperformance whendecodedusinganiterativeprobabilisticalgorithm[1,2]. Lubyetal,constructedirregularLDPCcodesandshowed thatirregularcodesperformedbetterthanregularones[3]. AndthenRichardsonandUrbankedevelopedadensityevo lutionalgorithmtoanalyze,designtheirregularLDPC codes[4].Bythismethod,theyconstructedtheLDPCcodes thatclearlybeatthepowerfulTURBOcodes[5]. Ontheotherhand,wirele…     

ON BAHADUR ASYMPTOTIC EFFICIENCY IN A SEMIPARAMETRIC REGRESSION MODEL

ＯＮＢＡＨＡＤＵＲＡＳＹＭＰＴＯＴＩＣＥＦＦＩＣＩＥＮＣＹＩＮＡＳＥＭＩＰＡＲＡＭＥＴＲＩＣＲＥＧＲＥＳＳＩＯＮＭＯＤＥＬ￥ＬＩＡＮＧＨｕａ；ＣＨＥＮＧＰｉｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＳｙｓｔｅｍｓＳｃｉｅｎｃｅ，ＡｃｏｄｅｍｉａＳｉｎｉｃａ，Ｂｅｉ...     

氯化钾镀锌

应用氧化还原与电化学理论，研究了氯化钾镀锌的新工艺，对其原理、工艺条件、电镀液成分和配比等方面进行了探讨．     

The Three-region Method of Color Matching in the Presence of Fluorescent Whitening Agents

An expression of reflectance of fluorescent dyes in emission region was used in this article. Through the analysis of the spectral radiance factor of fluorescent whitening agents （FWA）, the color matching of FWA was studied and the three-region method of color matching method was put forward. The method was proved to be reliable for the dyes used and was easy to apply for the color matching of FWAs.     

Multiobjective-Multicriterion Decision Making for Selecting Design Scheme of an Absorption Refrigeration System

In this paper,a biobjective thermodynamics model of minimizing comprehensivequantity of boiler vapour consumption and maximizing thermodynamics efficiency of an absorptionrefrigeration system is established,solved by a multiobjective optimization method to generate a non-inferior scheme set.Then,applying fuzzy multicriterion decision method,a best compromise scheme     

表面电位对高梯度磁选微细粒铜铅的影响

本文通过计算各种体系的总相互作用能,讨论了表面电位对高梯度磁选微细粒铜铅的影响,从理论上找出了改善分选指标,提高分选效率的有效途径。     

平板波导直接耦合的理论分析

本文对平板波导的直接耦合做了理论分析,得到了耦合效率,辐射损耗和反射率的计算公式,并对实算结果进行了讨论。     

高校教师队伍建设模式及运行机制初探

本文从分析我国高校教师队伍建设和管理中存在的问题入手，提出了树立效益管理观念，建立开放、动态、高效的教师队伍运行机制观点，对建立新型教师队伍建设模式及运行机制的有效途径也进行了有益的探索。