Ecological renovation process of Nanjing’s housing stock built between 1840 and 1949, China

Numerous in number and mostly still in use, buildings built between 1840 and 1949 are valuable assets in the rapid development and renovation of Chinese cities. However, due to lack of maintenance and being inhabited mainly by the elderly and people with low incomes, many of these buildings are in poor condition and have much higher possibilities of being demolished. The objectives of ecological renovation presented in this paper are to improve building performance and to achieve higher levels of comfort and lower levels of energy consumption. The housings in Zhong-nong-li block in Nanjing are used as an example in this paper to show how a strategy of “basic” renovation and “thorough” renovation is used in the ecological renovation of housing stock between 1840 and 1949 in China. The paper demonstrates that these are very practical steps for this building stock in China and could not only help to balance social and economic factors in practice, but also improve the living conditions of the residents, and endow the old houses with a new, long life. Numerical simulations of the natural day lighting and ventilation situations before and after renovation are made to show the improvement in building performance after renovation

Discussion on Chinese Ancient Literature Translation Based on the English Translation of the Book of Songs

The Book of Songs is an important part of Chinese traditional culture and enjoys a high reputation at home and abroad. This article is based on Turi’s theory of translation norms, and takes the English translation of The Book of Songs · Jing Jing by Richard Jacob and Xu Yuanchong as the research object. Comparative studies are made on the historical nature of understanding, the normativeness of translation, and the application of the fusion of horizons in the two versions of the Book of Songs. Incorporating history into translation brings the translation closer to the roots of history. The comparative research method proposed in this article can be widely used in various ancient literature studies, and has important theoretical and application values

Campus Economic Analysis Based on K-Means Clustering and Hotspot Mining

With the advent of the era of big data and the development and construction of smart campuses, the campus is gradually moving towards digitalization, networking and informationization. The campus card is an important part of the construction of a smart campus, and the massive data it generates can indirectly reflect the living conditions of students at school. In the face of the campus card, how to quickly and accurately obtain the information required by users from the massive data sets has become an urgent problem that needs to be solved. This paper proposes a data mining algorithm based on K-Means clustering and time series. It analyzes the consumption data of a college student’s card to deeply mine and analyze the daily life consumer behavior habits of students, and to make an accurate judgment on the specific life consumer behavior. The algorithm proposed in this paper provides a practical reference for the construction of smart campuses in universities, and has important theoretical and application values

Study on the metallogenesis during the early stage of continental collision in southern Gangdese, Tibet

Many porphyry Cu-Mo and Cu-Pb-Zn polymetal deposits have been found in the southern Gangdese belt, forming a porphyry copper ore belt and a polymetal ore belt, respectively. Previous geochronologic results indicate that most deposits in the southern Gang

Enhancement of underlayer coverage in sub-millimeter bilayer graphene by modifying the streamline direction

The growth of large-scale bilayer graphene (bi-graphene) is significantly important for graphene-based device fabrications. Chemical vapor deposition is usually used for the synthesis of high-quality and large-scale thin films including various monolayers and bilayers. However, a major challenge for bi-graphene growth is the so-called limited underlayer coverage, i.e., the faster growth of the top layer than the underlayer. Herein, using the circumfluence chemical vapor deposition, it is demonstrated that the underlayer growth can be greatly enhanced via optimizing the streamline, and high-quality AB-stacking sub-millimeter bi-graphene with underlayer coverage over 93% is achieved successfully. Raman spectroscopy and selected area electron diffraction confirm the high crystalline quality and uniformity of the as-grown bilayers. The as-fabricated field-effect transistor using the bi-graphene as the channel layer exhibits typical semiconductor transfer characteristics and a nonzero bandgap which is required for device applications. It is suggested that the optimized streamline design largely allows a reduction of difference in the edge growth kinetics between the top and bottom layers. Thus, in this work, a promising technical route is presented for the growth of large-scale bi-graphene with high underlayer coverage, beneficial for the development of functional graphene devices