国际法视野下的中日东海争端

国际法视野下的中日东海争端,是指中日两国围绕能源安全在国际法领域展开的关于东海大陆架划界的争夺和较量。在东海争端中,中国主张公平原则以及与之相适应的自然延伸原则。自然延伸原则在适用东海大陆架划界上具备坚实的国际法文本依据、地理法律事实依据、国际司法判例依据。日本主张的中间线原则不过是一种简便的划界方法,并不具备国际法原则地位,因此,日本无权将中间线原则强加给中国。     

某木薯淀粉厂淀粉燃爆事故分析与预防措施

木薯淀粉生产厂气流干燥过程会产生静电,无接地导线泄放,成为淀粉燃爆破的点火源。粉尘泄漏,与空气混合,浓度达到爆炸极限,便会引起燃爆。加强静电防护,提高员工粉尘防爆意识与能力是预防淀粉燃爆的措施。     

几类特殊的极限

求某些特殊形式的极限，应当采用特殊的方法．一些用常规方法不能解决的极限问题，可以巧用放大缩小与线性插补的方法．     

巴氏合金瓦在轧钢设备的应用与探讨

在轧钢设备中,选用ZG35作瓦胎材质,ZchSnSb8-4舍金制作瓦衬,可有效保证轴瓦质量,改进轴瓦结构,实行高压循环润滑延长了巴氏合金瓦使用寿命,减少了主机故障发生.     

高校食堂中的服务窗口

利用概率论知识建立了一个食堂的服务窗口模型．     

Students' perfectionistic profiles: Stability,change, and associations with achievement goal orientations

In this study, we examined what kind of perfectionistic profiles (i.e., different patterns of perfectionistic strivings and concerns) can be identified among general upper‐secondary school students, how stable those profiles are over the school year, and how they are connected with students' motivation (i.e., achievement goal orientations). Four distinct profiles were identified. Students with high strivings and low concerns had their focus mainly on mastery, while students with an opposite profile emphasized performance‐avoidance and work‐avoidance orientations. Students with high strivings and concerns favored both performance‐ and mastery‐related goals, whereas students characterized by low strivings and low concerns did not display a dominant tendency toward any orientation. Perfectionistic profiles were relatively stable over time, with the majority of students reporting similar tendencies across the measurements, and with no extreme changes observed. Some indications of more students displaying less adaptive perfectionistic tendencies by the end of the school year were nevertheless found. Our findings demonstrate not only stability in perfectionistic tendencies, but also their motivational relevance in the academic context where students' goals and performance concerns play an important role.     

压缩映象原理的证明及应用

压缩映象原理是泛函分析中一个最常用、最简单的存在性定理,作为其特殊情形可用来研究某类递推数列的敛散性.这里给出了这个定理的两种证明方法并举例说明如何利用它求一类递推数列的极限.     

基于PLC的交通绿波带系统设计

本文以避免城市内交通拥挤和车辆堵塞为目的，提出了基于PLC的交通绿菠带设计思想，阐述了交通绿菠带的设计原理，论述了应用PLC实现交通绿菠带的可行性和优越性。并以邢台市中兴大街为例，采用网络PLC的控制方式，从PLC的选型、硬件设计、软件设计三个方面进行了交通绿菠带的系统设计。可供市内交通管理部门和对PLC应用感兴趣的读者参考。     

极限计算中几种常见错误的分析

本文提出了初学者在极限计算中常见的五个方面错误,并对其原因进行了分析.指出了在极限计算中不仅要掌握各个法则的结论,更要注意法则的条件要求.     

上肢速度素质反应测定器的研制

上肢速度素质反应测定器,通过计时电路电磁制动及棒体下落控制等原理,使测定时的操作方法简便,数据更精确,从而替代传统“尼尔森”简陋测试方法。