高速铣削718模具钢的铣削力试验研究

利用TiAlN涂层刀具对718模具钢进行高速铣削试验研究,获得铣削速度v、背吃刀量α_p、进给速度v_f和径向铣削深度α_e对铣削力的影响规律,为合理选择铣削参数提供可靠的依据。同时,在正交试验结果的基础上, 应用多元线性回归分析方法,建立铣削力的回归数学模型,并用R检验和F检验法验证模型的显著性。     

荔枝害虫治理现状及展望

目前国内外防治荔枝害虫的手段仍是以化学防治为主体的综合防治。过量使用化学农药造成了荔枝园生态系统的破坏、害虫抗药性增强及再猖獗、果实品质下降及环境污染等一系列严重问题。荔枝害虫治理必将面临一场新的革命;即在系统研究荔枝果园昆虫群落的基础上,以无公害生态调控技术为指导,结合农业防治、生物防治、物理防治、遗传防治及必要的化学防治等多种措施,达到害虫持续控制的目的。     

传播的游戏理论视角下 新浪微博俄罗斯世界杯传播效果分析

使用“传播的游戏理论”,对新浪微博俄罗斯世界杯传播效果进行分析,并对新媒体用户的需求进行探讨。研究认为,世界杯传播是一场盈余时代的足球“游戏”,满足用户对愉悦、趣味的需求和对游戏的需求是新媒体未来发展的一种趋势;新浪微博俄罗斯世界杯期间,体现主观、个性的“选择性会聚”让用户在“游戏”过程中促进了“自我”的发展;只为享受足球魅力的非功利性传播为用户提供了一个宽松的“游戏”环境;利用微博话题、短视频、直播等新媒体技术传播乐趣,用户从“游戏”中收获了愉悦。对于传播效果的研究立足受众的个性特征和主观心态,注重体现个体主观能动意识,对把握未来新媒体传播发展和趋势具有启示意义。     

西非—中国航线原油远洋运输方案优化

为满足西非—中国航线的原油远洋运输方案的时效性要求,以油船运费、滞期费和靠港费之和最低为目标函数,以供需平衡、港口水深和装卸时间为约束条件,求解一个包含船型组合、装/卸港航线组合、油种替换、批次拆分等多决策变量的大规模NP(Non-deterministic Polynomial)难问题.采用差分进化算法进行求解.为提高求解速度,采用双染色体编码、基因组压缩编码、船型与拼装变量隐式联锁、配送油种比对解码等方法,进行供需平衡约束,降低问题规模,并缩减问题的"劣质解空间",提高差分进化算法的搜索时效.利用提出的算法对中国石化某月度西非—中国航线实际原油远洋运输方案进行优化,得到优化方案平均用时约5 min,可节约运费50余万美元.     

Learning the American Way: Sports International and American Soft Power

Abstract

From 1962 to 1968, the United States Government along with private entities funded the training of athletes from developing nations through a non-profit organization named Sports International. Led by former Peace Corps member David Dichter, Sports International sought to enhance America’s image in Africa, Latin America, and Asia. The initial aim of the programme was to train athletes to compete at the 1964 Olympic Games in Tokyo. The theory behind Sports International centred on the notion that helping developing nations achieves athletic success would influence them to view the United States more favourably. The idea to form Sports International came in the midst of the Cold War as the United States and the Soviet Union battled on a multitude of fronts. This article argues that American leaders worried about the presence of the Soviet Union in developing countries and sought ways to maximize American influence in those areas. The theory of soft power, a concept most prominently explicated by American international relations theorist Joseph Nye, forms the framework for this study. By analysing Sports International through this lens, this article demonstrates several problems which might ensure should one overemphasize the effect of sport on a nation’s soft power.     

Global solidarity against unilateralism

Abstract

The 1955 Bandung Conference was a crucial moment in the history of the former colonial states of Asia and Africa. The Bandung Spirit that came out of it was a strategic foundation for building solidarity and cooperation among nations. The Cold War period and its aftermath, however, indicate that the Bandung spirit was in decline. Meanwhile, the United States, which had intended to unilaterally disrupt the Bandung Conference, continues to conduct unilateral actions in pursuit of its hegemonic interests. Along this line, the United Nations has often been bypassed by the US and other powerful nations in their unilateral initiatives. In response to this situation, it is important to rekindle the Bandung Spirit and to struggle for the democratization of international relations. In today’s context the struggle should be focused on three areas, namely the democratization of world politics, world economy, and the United Nations.     

Negotiating women’s social space: public debates on gender in early modern Kerala,India*

Abstract

The paper argues that the formation of modern gender identities in early‐twentieth‐century Kerala was deeply implicated in the project of shaping governable subjects who were, at one and the same time ‘free’ and already inserted into modern institutions. Because gender appeared both natural and social, both individualising and general, it seemed to be a superior form of social ordering compared to the pre‐existing order of caste. The actualisation of a superior society ordered by gender was seen to be dependent upon the shaping of the fully‐fledged individuals with strong internalities and well‐developed gendered capacities that would place them in distinct social domains of the public and domestic, as ‘free’ individuals, who, however, were bound together in a complementary relationship. While this model still remains dominant in Kerala, by the 1930s, the public/domestic divide came to be blurred with the rapid spread of disciplinary institutions. Womanhood came to be associated not with a certain domain but with a certain form of power. This legitimated the entry of Malayalee women into public life, undergirded the much‐discussed ‘Kerala Model’ of development, and still holds up the highly ambiguous sort of ‘liberation’ elite Malayalee women have experienced. It has also strongly influenced the specific shape the resistance to patriarchy has taken in Kerala in the twentieth century.     

The camera in pain: memories of the Cold War in East Asian independent documentaries

Abstract

This article begins with a discussion of the changing topography of cultural production in East Asia over the last 25?years, especially as it concerns the genre of independent documentary film, and then it turns to three independent documentaries filmed in Japan and North Korea, South Korea and Japan, and China, respectively: Yang Yong-hi's Dear Pyongyang (2005 Dear Pyongyang. 2005. Directed by Yang Yong-hi. Busan International Film Festival. [Google Scholar]), Mun Jeong-hyun's Grandmother's Flower (2007 Grandmother's Flower. 2007. Directed by Mun Jeong-hyun. Busan International Film Festival: [Google Scholar]), and Wang Bing's He Fengming: A Chinese Memoir (2006). Erased from the official historical record and excluded from public commemoration, the alternate history of pain traced by these documentaries resubmits the Cold War to examination from deep inside its most private wounds. In the process, the filmmakers encounter not only the memories of the earlier generation that lived through the most violent episodes of the Cold War, but also come to question their own history and identities within the process of the Cold War's decomposition.     

基于负样本多通道优化SSD网络的钢铁厂提取

准确提取钢铁厂对去产能监测和环境保护具有重要意义。传统的人工目视解译方法效率低、成本高,无法满足开展大区域钢铁厂监测的需求。以深度学习目标检测网络SSD为基础,构建面向遥感影像钢铁厂提取的深度学习目标检测网络,提出maxout模块,将负样本通路优化为多分支结构,突出难分负样本特征并提升网络对无用特征的抵制效果。利用国产GF-1数据对京津冀地区的钢铁厂进行快速自动提取实验。与人工解译的钢铁厂点位数据的对比表明,该目标检测方法的提取精度达到80%以上。     

民办教育政策歧视现象分析

民办教育政策歧视有三条判别标准，即当平等处不予以平等、当差异处不予以差别对待、当补偿处不予以补偿。当前，我国民办教育政策歧视主要表现在学校税收、教师待遇、学生资助、学校办学自主权、特殊受教育群体补偿等方面，政策，中突、政策模糊和政策盲点是导致歧视发生的原因。