A Study on the System and Mechanism Construction of Social Management with Chinese Characteristics

社会管理是一个相当有中国特色的词语。改革开放以来，随着经济体制的转轨和社会的转型，社会流动性大大增加，社会问题与事务与日增多，传统的社会管理理念和方式都难以实现有效的管理，社会问题造成的影响在不断的增大。在这样的情况下迫切需要建立起一种与社会发展阶段相适应社会管理模式，这已经成为广泛的共识，政府、学者、社会人士都在积极呼吁与不断实践。 在构建具有中国特色的社会管理模式时，我们首先要明确的是社会管理是一个涵盖社会生活方方面面的完整体系，是由各个社会管理体制与社会管理机制有机结合组成的。不断完善社会管理体制与机制建设是当前社会管理水平不断提高的必经之路。创新与完善需要建立在对历史的清醒认识和对现...Social management is a word with Chinese characteristics. Since the Chinese reform and opening, especially since the economic reform and social transformation, social mobility is greatly increased. At the same time, social problems and social affairs are also increasing quickly. Traditional social management ideas and methods are difficult to provide effective management; the impact of social prob...学位：管理学硕士院系专业：公共事务学院_行政管理学号：1392010115049

Bridging the Gap Between Stars and Planets: The Formation and Early Evolution of Brown Dwarfs

This White Paper, submitted to the National Academy of Sciences' Astro2010 Decadal Review Committee, focuses on 2 central themes in the study of young brown dwarfs -- their formation mechanism and disk characteristics -- which are of direct relevance to fundamental questions of stellar and planetary origins and properties.Comment: 8 pages, 3 figures, Astro2010 Science White Paper (v2 has 2 references corrected/updated, and 3 repeated references in the v1 reference list removed

Edificio Intempo, en Benidorm (Alicante). Una atalaya sobre el mediterráneo

La crisis financiera obligó a abandonar la construcción de este colosal edificio. Cuando se retomó años después, hubo que modificar muchos planteamientos iniciales. Ésta es la historia del inmueble más alto del área mediterránea

ON THE INITIAL MASS FUNCTION OF LOW-METALLICITY STARS: THE IMPORTANCE OF DUST COOLING

The first stars to form in the universe are believed to have distribution of masses biased toward massive stars. This contrasts with the present-day initial mass function, which has a predominance of stars with masses lower than 1 M ☉. Therefore, the mode of star formation must have changed as the universe evolved. Such a transition is attributed to a more efficient cooling provided by increasing metallicity. Especially dust cooling can overcome the compressional heating, which lowers the gas temperature thus increasing its instability to fragmentation. The purpose of this paper is to verify if dust cooling can efficiently cool the gas, and enhance the fragmentation of gas clouds at the early stages of the universe. To confirm that, we calculate a set of hydrodynamic simulations that include sink particles, which represent contracting protostars. The thermal evolution of the gas during the collapse is followed by making use of a primordial chemical network and also a recipe for dust cooling. We model four clouds with different amounts of metals (10–4, 10–5, 10–6 Z ☉, and 0), and analyze how this property affect the fragmentation of star-forming clouds. We find evidence for fragmentation in all four cases, and hence conclude that there is no critical metallicity below which fragmentation is impossible. Nevertheless, there is a clear change in the behavior of the clouds at Z <~ 10–5 Z ☉, caused by the fact that at this metallicity, fragmentation takes longer to occur than accretion, leading to a flat mass function at lower metallicities