群锥上第一类Siegel域

从几类与矩阵群有紧密关联的群锥入手,以这些锥为底构造了几类非对称仿射齐性siegel域．这些结果包含了几类非对称域．     

卷首语

披着无限明媚的春光,携着枝头盈闹的春意,2006年第二期《闽江学院学报》又与您亲切见面了。《群锥上的第一类Siegel域》,给出了仿射齐性锥的三类群锥上的第一类Siegel域Bk,k>Ⅰ、Ⅱ、Ⅲ并由此构造了三类相应的非对称     

仿射齐性锥的一个注记

本文给出几类正定对称方阵所成的锥之子锥，并具体计算出这些雏的运动群。     

关于旗流形的一个注记

从几类与群锥有紧密关联的群矩阵入手,构造了几类齐性复能析流形．这些流形包含了旗流形．     

单锥上第一类Siegel域的扩充空间

本文给出一类齐性复解析流形及某些子流形,并应用它实现陆启铿、钟家庆在［１］中给出的单锥上的第一类Ｓｉｅｇｅｌ 域的扩充空间。从扩充空间上的运动群在超圆上的限制得到单锥上第一类Ｓｉｅｇｅｌ 域的仿射自同胚群     

关于剩余幺半群的锥与序

利用剩余和锥给出了剩余幺半群的偏序关系的一种刻划,得到了剩余幺半群的商是偏序群的一个充要条件     

卷首语

金色的秋风令人欣喜,累累的硕果让人快慰。在这层林尽染、万山红遍的收获季节, 《闽江学院学报》第五期又如期和大家见面了。 有界可递域的研究是多复变函数论的重点研究内容。陈纪阳同志于1994年研究了群锥理论并以此为基础构造了若干非对称可递域。 《仿射齐性锥的一个注记》一文,进一步研究了这些锥的若干子锥,并具体计     

双扰动多目标规划锥有效解集的闭性和半连续性

研究了一般拓扑向量空间中约束锥和控制锥同时受扰动时,锥有效点集和锥弱有效点集的闭性和半连续性.在此基础上,得到了约束锥和控制锥双扰动多目标规划问题的锥有效解集和锥弱有效解集的闭性和半连续性.     

年龄结构下具B-D功能反应和扩散的三种群系统的最优收获

建立并探究了一类年龄结构下具有Beddington-DeAngelis功能反应和扩散的三种群系统的最优收获问题.先利用超耗散算子等理论对建立模型的解的存在唯一性、非负有界性以及解对控制变量的连续依赖性分别进行了证明,利用法锥原理最后得到了控制问题的最优性条件.     

集值映射的连续锥选择及其存在性

引入集值映射的锥选择及连续锥选择概念,给出了集值映射连续锥选择的存在性条件以及锥下半连续集值映射的逼近连续锥选择的存在性条件。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.