The basic approach of protecting people from being hurt or killed in an accident is to improve crashworthiness of vehicles. This paper starts with discussing theories and methods for vehicle passive safety design, which included experiential methods, analytic methods, multi-body dynamics methods, crash test methods and the finite element method. Emphasis will be paid to the basic FEM theories and algorithms of impact problems. Topics discussed include the governing equation, element discretization, hourglass control, time integration, material model, shell element algorithms and contact-impact algorithms. For more reliable simulation results, this paper then conducts study on how to accurately get material model parameters by combining the FEM method with experimental method, and develops relevant material test machine and parameter calculating software. Based on that, basic typical impact simulation and test validation study are conducted. On the basis of the above work, the paper studies the thin-shell structures'crashworthiness, which was affected by the following factors: spot-weld features, shell thickness, cross-section and pre-deformation. As to vehicle parts'crashworthiness, the paper conducts simulation study of designing energy-absorbing steering system and adaptive airbag system. A practical energy-absorbing steering wheel is designed as an example. In further depth research, the paper suggests several inverse quantificational methods for vehicle crashworthiness design based on the ideal crash characteristics. The above theories and methods are applied with good results through several practical vehicles' crashworthiness design and improvement.

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Based on the status quo of the study of the advertisement language in the advertisement field and the linguistic field in our country,this paper demarcates the two studing fields which link their different studying purposes:the study in the linguistic category and the study in the advertising category.

就國內廣告界與語言學界對廣告語言的研究現(xiàn)狀，界定廣告語言研究的兩種分別聯(lián)系于它們各自不同研究目的的研究范疇：語言學范疇的研究與廣告學范疇的研究国产丝袜在线观看视频黄，并就廣告學范疇的廣告語言研究的方法論亚洲黄片视屏1234，提出了新觀點。

In order to intensify the research work of the folk traditional sports, we should put into the practice in the following aspects: Firstly, quickening the research of its subject systems, embodying characteristic of time, totally programming, sticking out its feature, complementary, and expanding applications; Secondly, strengthening the research, bringing its items in dividing into four parts: fossil type, origin type, developing type, les-matured type, and fully-matured type, and build up the museum of the folk and traditional physical culture, new items and international "popular sports"; Thirdly, reinforcing the building of the cultivating systems of professionals in the field of the folk traditional sports; Once more, intensifying the applying research in combining the folk traditional sports with school education; Fifthly, the applying research that makes the folk traditional sports be one of the most efficient means for "sports for all" in China; Finally, research about the folk traditional sports and athleticism, which makes use of various games to promote the industrialization and socialization of the folk traditional sports.

為了進一步地加強我國的民族傳統(tǒng)體育研究伊人草在线视频，應該從以下幾個方面來實施：一是加快民族傳統(tǒng)體育學學科體系的研究碰碰精品插下面日本美女去了，體現(xiàn)出時代性、整體規(guī)劃性好爽好大好紧别拔出来视频、突出特色911在线观看国产涩涩、注意互補性和拓展應用性；二是加大民族傳統(tǒng)體育項目的研究力度在线高清免费不卡无码黄片，提出將民族傳統(tǒng)體育的項目分為：化石型80老女人乱婬视频、原始型、發(fā)育期型欧美黄片天天在线观看、較成熟型和成熟型717电影网理论片我不卡，建立民族傳統(tǒng)體育文化博物館五月丁香花婷婷综合、民族特色項目和創(chuàng)立國際&名牌&；三是加強民族傳統(tǒng)體育專業(yè)人才培養(yǎng)體系的研究一级黄色视频免费观看；四是強化民族傳統(tǒng)體育與學校教育相結合的應用性研究亚洲精品一；五是民族傳統(tǒng)體育成為全民健身有效手段之一的應用研究；六是民族傳統(tǒng)體育與運動競賽的研究俄罗斯网站人人草人人干在线观看，利用各種運動會的形式促進民族傳統(tǒng)體育的產業(yè)化和社會化网页升级自拍偷拍。

This paper deals with and summarizes the research and importance of ductile shear zones and presents the future direction and aim for the research of the ductile shear zones around the world. Four aspects of studies of the ductile shear zones have been proposed in this paper as follows:(1) The stress environment including the mineral assemblages, deformation, stress-shearing parameters;(2) The major element sequence and activation under condition of stress;(3) The variations of trace elements and REE, their transportation distributions under strong natural deformation as well as variations of mineral crystal parameters, which can also control the element changes during the ductile deformation;(4) The relationship between element migrations, activation and stress, which will present the new evidences for the studies of dynamic diagenesis and mineralization as well as the studies of evolution of ductile shear zones developed in middle and low levels.(5) The analysis of elements and isotopes in mylonites on the micro-scale are crucial for the understanding of component migrations during the mylonization.

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Analysing the general status of the compulsory education resources distribution in Jiangxi province, from three aspects of education investing school condition and teacher staff and six major indexes,such as budgetary expenditure per primary school student and middle school student, budgetary public expenditure per student, schoolhouse acreage per student, value of teaching realia and equipment per student, eligibility ratio of teachers" diploma and ratio of teacher"s intermediate technical post and above, we can induce the problems in the distribution of Jiangxi province compulsory education resources and the reasons consist in the policy of government which results in the problems.

同時，也希望該研究能為省級政府對地方各級政府在推進義務教育均衡發(fā)展方面進行督導評估時提供參考和有益的借鑒最新成年人黄色网站，從而為推動全省義務教育的均衡發(fā)展起到切實有效的作用无码精品视频在线观看网址。本文在研究過程中力求以馬克思主義方法論為指導，主要運用文獻研究方法一区二区色综合。文獻研究的優(yōu)點主要是欧美性交播播，研究成本較低，可接觸的時間和空間范圍廣日韩性交网址，在較短的時間內可以獲得大量的資料欧美性欲网站，易于做縱向研究和橫向研究。

The first chapter introduces backgroundAAAA电影网、pursers and meaning特黄a又粗又硬又爽视频、method、content and structure of this paper and the present conditions of current research. Some basic concepts are also defined in the first chapter; the second chapter systematically reviews the international market development theory, internationalization theory for enterprises based on technology, international risk prevention theory and other relevant theory. The third chapter introduces the current international operation condition of Chinese high-tech enterprises and analyzes the international operation character and motivation of these enterprises. Based on the analysis of the character of Chinese high-tech enterprises and the main elementary which will affect the entry-mode, the fourth chapter discusses the international strategy and the relevant entry-mode from the perception of resource. After selecting the suitable entry-mode, the fifth chapter discusses the problem of international risk. This discussion focuses on Chinese high-tech enterprises and establishes the risk prevention system, with the analysis of specific case. The last chapter summarizes the whole research content and brings forward the guidance for the deeper research.

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Main points of the thesis are as follows:(1) The main function models and information relations between these models in the CAPP system in the integrated CAD/CAM project are explained, a new process plan design method is mentioned based on analyses of process plan design. This method is based on the process plan prototype, and develops the prototype little by little until the perfect process plan is completed, the prospect of this method is discussed;(2) The feature abstracting rules and methods are studied, a feature coding system is developed based on GT, all the defined feature models are described by the mathematical methods;(3) The integrated method of CAD/CAPP based on features is mentioned, this method defines a feature exchanging model, and develops an interface software to exchange design data into technology data base, this technology data base includes the design and technology information of the parts;(4) The process plan reasoning method based on features is created, this method uses Mycin algorithm to solve the reasoning of the feature process plan. A process plan making system is developed. In this system part process plan is made by the semi-intelligent method, this method uses the feature reasoning, feature process chain searching and man-computer talking together;(5) The main structure of the HOPE system is introduced, a shaft drawing and its process plan made by this system are shown, the data process problem in process drawing making is also discussed;(6) A new method of describing process rule is introduced, this method uses IfThen rules and neural nets weight values together to describe process rules, the BP algorithm is adopted in this method;(7) The optimal machining sequence problem of the process steps on the same fixturing is discussed, optimal algorithms SA is applied to solve this problem, the result shows that this method is more efficient than the traditional method;(8) All jobs in the thesis are summarized. In order to carry out the research in the future, some rational proposals are given.

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Learning of all the three linguistic forms in terms of both short-term and long-term effects. The differential results have a close relationship with the MT and CV features of them. A form with lower CV might be more attention-demanding in terms of its inherent semantic value.The thesis consists of 5 chapters: Chapter 1 is an introduction of the research topic, purpose and significance; Chapter 2 is a selective literature review of the enhancement techniques and mixed results of FonF in the previous studies, Chapter 3 presents the theoretical framework the present study wasbased on; Chapter 4 reports on the present study, including the hypotheses, operational definitions, subjects, target language forms, research design, procedures, instrument, data collection and analysis, analysis, discussion; and Chapter 5 is the conclusions of the present study.

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If we want to make an effective and rational study of national psychology and a cross-cultural study between national bodies, we must first of all define the basis on which to make the studies as well as the comparisons. Namely, we should define the equivalence which we can make a comparative study of or a cross-cultural study of on the basis of methodology by building a platform of researching the equivalences of different nations so that we can make the study of national psychology there.

要有效而合理地進行民族心理學研究、進行民族族體間的跨文化研究国产黄调教一区二区三区，就必須首先確定這種研究與比較賴以開展的基礎视频国产欧美视频XX，亦即在方法論上對可以進行對比研究或跨文化研究的等值予以確定，搭建一個研究不同民族的等值平臺日本女人的牲交视频69，在這個平臺上開展民族心理的研究丝袜白浆无码亚洲一区二区。

In the paper, Professor Zhao's historical course engaged in coral reef study and academic results are reviewed: he established the representative section for geological research on Quaternary coral reef, developed engineering geology research on coral reef, elaborated systematically landform development rules of coral reef in the South China Sea, uncovered certain paleo-oceanographical conditions and the new tectonic movement features, studied the historical climate recorded by lagoon of coral reef in the South China Sea and marine geography of coral reef for the first time, investigated comprehensively the only fringing reef of the seacoast of South China continent on western shore of Xuwen County, summarized initially the history of modern coral reef research in China.

文中回顧其從事珊瑚礁研究的歷程，并評述其珊瑚礁研究的學術成果：建立了我國第四紀珊瑚礁地質研究的典型剖面久操国视频在线观看；開拓了我國珊瑚礁工程地質研究美日韩男女精品视频在线；系統(tǒng)論述了南海珊瑚礁地貌發(fā)展規(guī)律，揭示了某些古海洋學狀況和新構造運動性質；首次研究了南海珊瑚礁潟湖沉積記錄的歷史氣候扒开双腿疯狂进出爽爽爽；首次進行了我國珊瑚礁區(qū)綜合海洋地理學研究亚洲第一页在线视频免费播放；較全面開展華南大陸沿岸唯一岸礁徐聞西岸珊瑚礁調查研究；初步總結了我國現(xiàn)代珊瑚礁研究史国产一级免费无病毒黄片。