H2O/CO2污染对煤油燃料超声速燃烧影响数值研究

在纯净空气与H₂O/ CO₂污染空气来流对比试验结果基础上,采用数值计算方法和化学动力学方法,研究了H₂O和CO₂污染组分对煤油燃料超声速燃烧的影响,获得了试验手段难以得到的燃烧室流场参数和性能数据。完成了相应的煤油燃料超声速燃烧室二维数值计算,其中匹配了进口总温、总压、马赫数、氧气摩尔分数和工作当量油气比。将数值计算结果与相应试验测量值进行了对比分析,并结合燃烧室流场数据、性能参数分析了H₂O和CO₂污染的动力学影响、以及对燃烧室性能的影响。研究表明:(1)数值计算结果与实验测量值总体上吻合,两种手段均体现了纯净空气来流时不同煤油当量油气比的燃烧室性能,并反映了一致的“污染效应”影响趋势;(2) H₂O污染、H₂O+ CO₂污染的存在降低了煤油燃料超声速燃烧室性能,体现在燃烧诱导压升、燃烧效率、流向冲量增量的下降,而且随着污染组分含量的增加,燃烧室性能下降越加显著。      

发动机燃烧室内壁材料热环境的气动热试验模拟技术研究

利用超声速矩形湍流导管和等离子电弧加热器模拟了发动机燃烧室内流和高超声速飞行器外壁面外流热环境,进行了平板表面冷壁热流测量和燃烧室内壁材料考核试验。结果表明:由于辐射换热的影响,在选取的两个典型来流条件下,发动机燃烧室内流热环境下的冷壁热流比外流热环境下的高出21%和40%,但是冷壁热流的增量基本相当,约为0.70~0.80MW/m²。随着冷壁热流的增加,辐射换热产生的热流增量的影响力会逐渐减小。材料考核时,相同配方的C/SiC复合材料在内流热环境下的表面温度高出约400℃,背面温度高出约90℃,这种差异对于发动机燃烧室内壁面材料考核至关重要,必须在材料考核试验中加以考虑。      

民族、婚姻、伙有共耕与上帝:基督教嵌入藏区傈僳族社会之阐释——以滇西北德钦县霞若乡为例

基于对云南西北部一个傈僳族乡村全体傈僳族自20世纪90年代以来改信基督教的过程进行考察,指出傈僳族信仰基督教是身处碎片化、原子化社会结构中的族群面对周边民族的歧视与物质资料和人口再生产的重重压力下作出的无奈选择,提出“婚姻一家庭一土地一民族”是基督教在傈僳族社会传播的网络,这一模式可以解释为什么基督教在傈僳族社会传播呈现出民族性特征,区别于基督教在汉族乡村社会传播呈现出的宗族性特征.     

闽南文化的媒介传播路径现状研究

文化传播的发展出现相互碰撞交融、共同发展的多元化特征的今天,传播方式的变化也赋予了其新时代的特征.闽南文化是地域性文化的重要代表,本文通过对其在传统传播方式中的历史建筑遗产地域性文化特色与保护、非物质文化遗产的地域性传承及保护、基于典故影像式的大众传媒、文学史册里文本传承这四个方面论述其传播路径现状.通过对以第四媒体为代表的新传媒方式在文化传播中的作用及优势的介绍,对闽南文化传播的媒介传播进行路径拓展研究.     

冷却剂参数对铣槽喷管低周疲劳寿命的影响

采用有限体积流固耦合计算方法、非线性有限元热结构耦合分析方法和局部应变法研究大面积比铣槽喷管三维再生冷却槽道在循环工作条件下的热结构变形与低周疲劳寿命,并对比分析了冷却剂质量流量与入口温度对铣槽喷管疲劳使用寿命的影响。计算结果表明,铣槽喷管热结构响应呈现复杂的三维效应,应变较大位置主要分布在与肋连接的内衬区域,喷管中部的残余应变量最大;冷却槽道低周疲劳寿命分布和热结构响应基本一致,最小寿命位于喷管中部与肋相连的内衬区域燃气侧;随冷却剂质量流量增加,铣槽喷管低周疲劳寿命不断提高;随冷却剂入口温度增加喷管尾部低周疲劳寿命值不断降低,而喷管中前部的低周疲劳寿命值却不断提高,当冷却剂入口温度为280K左右时,本文的铣槽喷管总体使用寿命达到最大。      

固体火箭发动机粘接界面湿热老化实验

对固体火箭发动机粘接界面试验件进行了不同湿热条件下的加速老化试验,并测量了不同老化时间粘接界面的扯离强度,描述了湿热老化试验和性能测试中的试验现象,结合复合材料微粘接结构吸湿规律对试验现象和撤离强度随老化时间变化曲线进行了分析。研究结果表明:衬层-推进剂粘接界面是固体火箭发动机粘接结构中最薄弱环节,应予以重点考虑；湿热老化促进了环境水分从衬层–推进剂界面向推进剂内部的扩散和渗透,致使弱边界层向推进剂内部扩展,导致了衬层-推进剂界面粘接强度的降低。试验件平均扯离强度随老化时间呈下降趋势,中间有一个强度趋于稳定的平台期。      

旅游管理专业导游方向现代学徒制教学实践探索

在人们物质生活条件越来越好的今天,享受假期、主动旅游的人数获得了极大的增长。国内旅游业正是在这样的时代背景下获得快速发展的。为了提供给旅游业更多新鲜的血液,就需要对当前国内旅游业情况进行研究。从现实反馈的条件来看,当前国内旅游业普遍存在缺少足够导游的问题,人才素质不平衡,无法为游客提供优质服务。为了改变这一现象、这一情况就需要利用现代化教育技术找到新时期背景下的旅游行业发展出路。本文将以国内旅游行业导游培养为例,结合当前的教育背景,阐述现代学徒制应用的意义以及迫切性需求。以旅游管理专业导游教学特征,讨论校企合作在教学中的应用思路,参照实践特点与阶段性要求分析现代学徒制的有效应用思路。     

冲压发动机C/SiC喷管承压失效研究

新型三维编织碳/碳化硅复合材料存在较强的各向异性,而各个方向的性能数据积累不足,复合材料的强度计算方法尚不完善,为了发现新型三维编织碳/碳化硅复合材料在冲压发动机喷管中应用可能遇到的问题,并找到相应地解决措施,开展了这种复合材料应用于冲压发动机喷管的承压强度计算和承压实验研究。对承压实验中出现的低压破坏情况进行了分析,分析了低压破裂的原因,提出了改进措施。分析结果表明:C/SiC喷管喉部密度较低,导致强度较低,承载能力下降,是首次强度验证实验过程中该局部破坏的原因；为提高喷管强度,需要通过其形状设计并控制沉积流场,保证其喉部的沉积密度达到1.9g/cm³以上。对改进后的喷管进行了实验验证,实验结果与计算结果基本一致,满足要求。因此,在实际应用中应对喷管喉部和纵向密度的分布进行工业CT无损检测,确保喷管密度的分布均匀。      

旅游管理专业导游方向现代学徒制教学实践探索

在人们物质生活条件越来越好的今天,享受假期、主动旅游的人数获得了极大的增长。国内旅游业正是在这样的时代背景下获得快速发展的。为了提供给旅游业更多新鲜的血液,就需要对当前国内旅游业情况进行研究。从现实反馈的条件来看,当前国内旅游业普遍存在缺少足够导游的问题,人才素质不平衡,无法为游客提供优质服务。为了改变这一现象、这一情况就需要利用现代化教育技术找到新时期背景下的旅游行业发展出路。本文将以国内旅游行业导游培养为例,结合当前的教育背景,阐述现代学徒制应用的意义以及迫切性需求。以旅游管理专业导游教学特征,讨论校企合作在教学中的应用思路,参照实践特点与阶段性要求分析现代学徒制的有效应用思路。     

颅内血肿微创穿刺碎吸治疗的临床应用（附176例分析）

目的:研究采用微创穿刺行颅内血肿穿刺抽吸治疗高血压脑出血,外伤性硬膜外(下)血肿,脑内血肿等颅内血肿的临床效果.方法:在CT定位下应用穿刺针行经皮血肿穿刺碎吸术及血肿腔内注入液化荆技术,以清除颅内血肿.结果:治疗176例,好转:157例,死亡:6例,自动出院:13例.结论:在适应症范围内颅内血肿微创穿刺碎吸治疗有一定优势.     

Meeting / Derrida

In August 1999, Jacques Derrida gave a number of lectures and seminars in Melbourne and Sydney. The seminar of 13 August, held at Sydney's Seymour Centre Theatre, was open to the public. It consisted of a question-and-answer session with Genevieve Lloyd, David Wills, Paul Patton and Penelope Deutscher. Its title, 'Themes from Recent Work', reflected interests in the work from Specters of Marx (1994) onwards which some, including Paul Patton, have referred to as deconstruction in its affirmative phase. What follows is a by-no-means verbatim record of the event. Rather it is but one member of the audience's account of what transpired in the seminar – an account which is therefore necessarily selective and pressed through the grid of my own quasi-philosophical interests. Following this account of the seminar, I offer some marginal notes on the open discussion following the seminar, then, finally, some reflections on a particular matter discussed at the dinner which followed that – madness.     

Defining ‘real India’: representations of authenticity in independent travel

As an alternative to the stereotypical mass tourism, independent travellers – travellers who travel for extended periods on low budgets while ostensibly avoiding formalized tourist activities and locales – are invested in constructing ‘authentic’ travel experiences. Practices such as ‘off-the-beaten-track’ travel and cultural engagement provide the means by which independent travellers are able to make claims to such authenticity. Authenticity is constructed by travellers through idealizations of intimacy and non-commodification. These idealizations are tangled in narrative representations of ‘real’ India and ‘real’ Indians, their ‘real’-ness typified by an absence of other travellers, tourists and, more generally, Western contamination. In these ways, ‘authentic’ travel is dependent upon actively constructed binaries of Western travelling subjects and exotic Indian objects. Yet travellers' fantasies of the Other are fragile and subject to collapse at moments in which so-called Others articulate their subjectivity in a way that is inconsistent with travellers' expectations. Through a focus on travellers' narratives of their experience, both the requirement for an Orientalist dichotomy as well as the ruptures that continually challenge this dichotomy, will emerge.     

Oestrogen Rising 2016: Ireland’s stained and bloodied cloths

A weaver, seamstress, laundress and artist, in this essay I shall spin a yarn, tangle a web, and construct a text(ile) of the inter-weave of narrative and identity that I define as my intellectual, textual, somatic and material/visual practice obsessions. My work explores ‘the places in-between’ in the entanglements of Irish and Northern Irish gender and identity, and in the abject fabrics of death and of desire. As an Irish feminist, sense-making of the complexities, conundrums, challenges and contradictions of my land, my cloth, my body and my culture owes much to Irish women before me who fought for female suffrage, and Irish women now – north and south of the border that divides the island of Ireland – who still struggle for equality of citizenship, social justice, human rights, and full reproductive autonomy. My contention is that when we accept that Ireland herself is a many-layered cloth, a stained and bloodied cloth, a cloth marked irreversibly by history, conflict, denial and abuse, stained by its own repression, marked through denial of all its people’s rights and needs, and bloodied by its greatest export, the haemorrhage of its people, then – polemical, didactic or reflective, with more compassion, empathy, humility and heart – we just might make peace with our past.     

Refugees,migrants, neither,both: categorical fetishism and the politics of bounding in Europe’s ‘migration crisis’

The use of the categories ‘refugee’ and ‘migrant’ to differentiate between those on the move and the legitimacy, or otherwise, of their claims to international protection has featured strongly during Europe’s ‘migration crisis’ and has been used to justify policies of exclusion and containment. Drawing on interviews with 215 people who crossed the Mediterranean to Greece in 2015, our paper challenges this ‘categorical fetishism’, arguing that the dominant categories fail to capture adequately the complex relationship between political, social and economic drivers of migration or their shifting significance for individuals over time and space. As such it builds upon a substantial body of academic literature demonstrating a disjuncture between conceptual and policy categories and the lived experiences of those on the move. However, the paper is also critical of efforts to foreground or privilege ‘refugees’ over ‘migrants’ arguing that this reinforces rather than challenges the dichotomy’s faulty foundations. Rather those concerned about the use of categories to marginalise and exclude should explicitly engage with the politics of bounding, that is to say, the process by which categories are constructed, the purpose they serve and their consequences, in order to denaturalise their use as a mechanism to distinguish, divide and discriminate.     

伊斯兰学者刘智的"元气"与日本儒者伊藤仁斋的"一元气"思想——朱子学"理"、"气"学说的批判与重构

在"文明间对话"被各国学界极为重视的当代,特别值得关注与研究的是,17-18世纪的回儒学与日本德川儒学之间的具有价值和意义的对话.刘智和伊藤仁斋是同时代不同文化背景的两位思想大师,同时受到朱子学影响,并吸收融合而产生出自己独特的思想体系.本文将探讨这两位思想家对朱子学"理"、"气"思想的重构特色.进一步想说明,不同文化...     

The changing configurations of self-(m)other dialogue in North Cyprus

This paper deals with issues of identity, nationalism, postcolonialism, and self-other relations with a focus on a period of transformative events in North Cyprus. It notes how nationalism has been the dominant means of identification for Cypriots in their modern history, and argues that unless weakened and supplanted by a radically pluralist democracy, nationalism imagines one's identity as an indivisible unity and has no place for different others within the nation. However, a pressing relationship with others and otherness is no stranger to Cypriots either, which makes it clear that the border that defines the ‘we’ of such nationalism is, at the same time, the line that divides the self intrinsically, indicating the otherness of the self or its alterity. Subjectivity involves subjection to the other.     

热贡鲁若中"玛泽"与藏族历史的渊源关系

文章从历史学、宗教学、民俗学等角度,将流行于黄南藏族自治州同仁县隆务河流域的六月会主体节目之一"玛泽"的文化内涵进行了新的探讨,并就"玛泽"节目的历史和宗教渊源关系,民俗形成过程,以及对军事、生产活动中的意义提出了自己的看法.     

三江源自然保护区生态旅游开发的SWOT分析

本文就三江源自然保护区开发生态旅游产品的可行性及发展潜力,运用SWOT分析模式进行客观分析,并得出三江源开发生态旅游产品是实现该地区可持续发展的最佳途径。     

Changing patterns of mobility,citizenship and conflict in Indonesia

ABSTRACT

Mobility and migration are inherent ingredients of Indonesian cultures. In an archipelago with thousands of islands of various size, character and nature, mobility is an important means to make a living and to survive by migration. The right to free movement in Indonesia is constitutionally granted. It can create mobility and give expression to equal citizenship rights at the same time as it can trigger the enforcement of borders among cultural groups and the ethnification of local and regional politics. Mobility thus always comes along with immobility. Physical mobility of one group of people might cause immobility of another group or it might create cultural and political immobility in the same group. In places such as Eastern Indonesia, people have developed reciprocal means to integrate newcomers. Whereas the immigrants are usually disadvantaged citizens with regards to land and customary rights, those living in the area for generations have nonetheless become integral parts of quite peaceful local settings, one way or the other. The advancement of decentralization, democratization and direct elections of political representatives can lead to political empowerment, the promotion of ethnicity as election capital and changing patterns of belonging. This paper illustrates these ambivalences by looking at mobility in Indonesia more generally and how changing national policies and laws lead to reinterpretations of mobility patterns and trigger changes in relations between local population groups and existing mechanisms of cultural and political inclusion and exclusion. Butonese migrants in Maluku will here serve as a case study.     

Im/possible lives: gender,class, self-fashioning,and affinal solidarity in modern South Asia

Drawing on ethnographic research and employing a micro-historical approach that recognizes not only the transnational but also the culturally specific manifestations of modernity, this article centers on the efforts of a young woman to negotiate shifting and conflicting discourses about what a good life might consist of for a highly educated and high caste Hindu woman living at the margins of a nonetheless globalized world. Newly imaginable worlds in contemporary Mithila, South Asia, structure feeling and action in particularly gendered and classed ways, even as the capacity of individuals to actualize those worlds and the ‘modern’ selves envisioned within them are constrained by both overt and subtle means. In the context of shifting cultural anchors, new practices of silence, literacy, and even behaviors interpreted as ‘mental illness’ may become tactics in an individual's negotiation of conflicting self-representations. The confluence of forces at play in contemporary Mithila, moreover, is creating new structures of feeling that may begin to reverse long-standing locally held assumptions about strong solidarities between natal families and daughters, on the one hand, and weak solidarities between affinal families and new daughters-in-law, on the other.