Traces the history, we discover not hard, the history of human is a history of war day to fight, is also a history of the conquest of the self. From the legendary NvWaBuTian to dayu water, from victory over SARS to the fight against bird flu, man never stopped fighting against disasters.

The continuous improvement of urbanization level marks the human wen Ming increasingly progress, but a lot of fact also proves the existence of contemporary urban development and disaster supply relationship, errors in the process of the urbanization intensified the development of urban disasters, disasters intensified in turn hindered the urban sustainable development, mankind is faced with the new test. At present, the disaster management has become the important means to realize the sustainable development of cities around the world, and the disaster assessment is an important part of disaster management, is the foundation of all disasters management decisions. Disaster assessment is the comprehensive reflect disaster, disaster reduction goal set, optimization of disaster prevention, disaster relief, relief measures, evaluation and mitigation benefits, basic basis for police decision of disaster reduction, and develop a plan of land use, development, and develop a plan of social economic development of important resources.

From the perspective of system theory, urban disaster evaluation system of higher dimensional characteristics, correlation between complex system and the system function of nonlinear characteristics of urban disasters. Therefore, identifying a quantitative assessment of urban disasters are important and difficult task. Disaster assessment content is so confused, in short, Dr. School to study all the content is obviously impossible.

, therefore, this paper mainly in view of the current disaster evaluation, the hot and difficult problems in earthquake and storm surge disasters, for example was studied, the main contents and results are as follows: 1 the work on the basis of a large number of literature investigation, this paper demonstrates the relationship between urban development and disaster formation of the mutual feedback, illuminates the disaster assessment in the role of urban disaster management and sustainable development, combing the disaster assessment especially quantitative assessment of development both at home and abroad, puts forward the disaster assessment content of the fourdimensional model, the combined space of disaster evaluation.

Finally, the quantitative evaluation method and its application in disaster assessment are summarized, for this article is going to carry out level of urban disaster assessment and disaster prevention and mitigation capacity assessment methodology research laid the foundation. 2 build a city natural disaster grade identification of fuzzy clustering analysis model.

First of all clarify the concept of disaster grade and grade evaluation. Then, content of disaster assessment, including hazard level used in the present study of characterization methods, disaster grade evaluation index system and calculation method for the grade evaluation of disaster and elaborates the hierarchy method, points out the deficiency in the current disaster grade evaluation. On this basis, the wind BaoChao disasters, for example, first using the direct economic losses, the death toll and the affected area of the data, using the fuzzy cluster method to set up the model of disaster grade class, and then adopt the method of fuzzy closeness to evaluate samples identified, established after the first clustering recognition disaster grade evaluation method system. Compared with other methods, the method system more in line with peoples cognitive process.

Final paper for applicability of the method are discussed, points out that the sample of small and regional determines the reliability and applicability of the method. 3 build the urban disasters grades of grey neural network forecast model. Compared with the evaluation after a disaster, disaster or catastrophe level disasters in advance before information will greatly improve the timeliness, relief to help disaster relief supplies and personnel allocation, reduce disaster losses. Based on storm surge disasters, for example, the use of storm surge data as training samples, factors to disaster degrees for the target established a three layer BP neural network model, has carried on the forecast to disaster grade evaluation.

Grey correlation analysis method is used to analyse the factors associated with screening, can reduce the workload forecast, improve the accuracy of prediction, the empirical analysis show that the method is feasible.

4 build the aseismatic ability of fuzzy comprehensive evaluation model of urban community. Papers in earthquake disasters, for example discusses the urban community disaster prevention and mitigation capacity assessment method system. Unlike building aseismic capability assessment, this paper build city community aseismatic ability of the fuzzy comprehensive evaluation model, and give full consideration to the urban community in a variety of factors, including building density, population density and the degree of damage of buildings under a certain intensity for the earthquakeresistant capacity; Sorting method is used to determine the weights of various factors, using fuzzy comprehensive evaluation method solved due to the concept of fuzziness cause problems for the antiseismic ability of hierarchies.

Urban natural disasters quantitative evaluation method

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Man is a unique transcendence exists. Human life structural non specialized people has great possibilities and plasticity, thus laying the mans transcendence natural physiological basis, enabling people to come out from the general elevate animals, beyond the shackles of instinct.

However, as a transcendental existence, human transcendence not only refers to the natural physiological properties and functions of some of the other animals than natural, but mainly in the social attributes, aspects of cultural property. Human transcendence is not rootless grass, come out of nowhere, but the structure of human existence inherent requirements. Survives as implying the existence of its own rich structure, also identified human transcendence. Human transcendence embodied in human beings transcend the individual, the ideal of reality beyond the limited and unlimited right beyond these three areas. Beyond the intrinsic properties of the human, and thus human life activities are also beyond. So transcendent human life activity is to show how out of it? Different philosophers give different answers.

In philosophical anthropology cultural Landman, Landman inherited and developed the philosophical anthropology on the positive results of human studies, he advocated the freedom of creative people have put a vast culture, society, history and traditions to be examined, so here Landman, who embodies the transcendence of human cultural creation process.

Creative people who not only compensates for deficiencies in the biological properties, but also generated a major force in human culture. Conversely culture also compensates for a non specialized arising defects. On the one hand people to help improve their own culture, beyond the life instinct restrictions, on the other culture is in the persons social, historical and traditional generation and construction. Create cultural activities in the human process, plays a vital role symbols, symbols are linked people and culture intermediary and bridges. German philosopher Ernst Cassirer will people defined as the symbol of the animals, visible symbol can give people in a constant awareness and the ability to grasp the world.

Thus, in Cassirers symbolic philosophy, human sexual activity beyond the history of human use symbols to express constructed by language, mythology, religion, art, history, science and culture in the form of the organic composition of culture as a whole process. In Marxs practical philosophy, practice is the origin of human existence and activity patterns of life. Practice is one of the essential characteristics of its transcendence, that is the moment to be above and beyond the boundaries towards new goals, in particular in: constantly transcend the material and the spiritual, the individual and society, utilitarian and non-utilitarian, reality and the ideal opposition to achieve their opposites process, and thus human life course is super human practice unfolding process, and explains the history of human development in practical activities beyond the life of the properties.

By Landman, Cassirer, Marx thought about human transcendence comparative analysis, we can see Landman, Cassirer only from the cultural, symbolic of a single dimension to the study of human transcendence, which can only is to stay in the speculative intellect level to explore. And Marx who will resort to the transcendence of human practice, so the reality of human life activity as the foundation of human transcendence is understandable and can be achieved, because not only survive in the cultural world, survive in the world of symbols, but also living in practical activities, there is not only a cultural symbol of existence, but the practice still exists.

Man is beyond existence, the definition of the human cultural, symbolic, practical blend. Human transcendence is human practice of intrinsic motivation and mechanisms, is a human cultural creation, symbols, activities and practices of the highest performance and implementation. People in the cultural, symbolic level only unifying transcendent dimension in human practice was able to transcendence possible.

From a philosophical point of view of human transcendence systematic study, from the structure of human existence and the reality of life defined in terms of human activity, human studies to expand the New Horizons; rooted in the structure of human existence is human transcendence intrinsic properties, is to study the overall development of the premise of the problem, so the human transcendence systematic research that can comprehensive development of man to provide theoretical support; epistemological aspects of mans transcendence for understanding the point of departure, will break the traditional The main object of conscious limitations, including the establishment of a culture of epistemology, social epistemology and the unity of nature, including epistemology epistemology; transcendence from human to understand the practice, practice and cultural bridge links with intermediaries symbols of status and role of highlighting out, which enrich and supplement the Practice of Marxist philosophy. In addition, the study of human transcendence also very important practical significance, which is mainly reflected in the play to peoples transcendence, to promote harmonious development of society; life in education to achieve transcendence; cultivate people’s transcendental consciousness, innovative personality construct three aspects.

Persons transcendent philosophical explanation

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