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To point of environmental data monitored and dispersed, the transported data character are real-time and continued, we have been used the telecommunication network, which has been covering the whole country and city, main including PSIN (public switch telecommunication network) and DDN (digital data network) and GSM (global system for mobile communication), the monitoring system of regional environmental...
Ant colony algorithm (ACA) has a good solving efficiency to solve the small and medium TSP (Traveling Salesman Problem), but it is difficult to realize overall optimum and takes long time when being applied to large-scale TSP. The paper puts forward self-adaptive DBSCAN (density-based spatial clustering of applications with noise) ACA which can divide the large-scale TSP into several small and medium-scale...
On the basis of defining land use function conception and classification, this paper selects 12 indices from land use, environment and social-economic development conditions, and selects Analytical Hierarchy Process (AHP) method to identify land use functions distribution of Harbin-Daqing-Qiqihaer region in the northeast of China of the year 1976 and 2005 on geographical grid scale. Spatio-temporal...
This paper proposes a control strategy for series hybrid electric city bus driving on fixed route. The control strategy consists of two parts: dynamic programming (off-line) and fuzzy logic (on-line). Based on real dates of the NO.600 bus recorded by data logger, an average driving cycle is calculated. The optimum power distribution between engine-generator unit and battery unit adequate for the average...
Analysis and evaluation on land carrying capacity is the key content of environmental impact assessment of urban master planning, even an important criterion of determining the feasibility of resource and environment in urban planning. Currently, most cities are all facing the problem of land resource shortage, land carrying capacity has become the pivotal factor for restricting the urban development,...
The pilot project of power fiber to the home for national service reflect"three nets fusion" strategy, which is an inevitable selection to promote social resources sharing. The paper discusses the EPON system solutions that based on Ethernet passive optical network technology in Henan intelligent power consumption community project, and research the Networking technology scheme from the...
Ag modified TiO2 loaded on artificial zeolites was prepared by sol-gel technique and photoreductive deposition method. The photocatalytic activities were investigated by the photocatalytic decolorization of methyl orange solution under visible light irradiation. The results show that Ag doping induced the enhancement of photocatalytic decolorization methyl orange and the optimal Ag/Ti mole ratio was...
City eco-security early-warning evaluation indicator system of Liaohe River watershed based on Pressure-State-Response (P-S-R) was established, and on the basis of which, city eco-security early-warning model of resources-population-economy-society-environment composite system was built in this paper. This research adopts a combination assessment methods, simulates a series of eco-security early-warning...
Urbanization is a necessary requirement and result for industrial development. The urban land intensive use is a natural way for urban development. Land use and urban development interacts. This paper selected the perspective of a reasonable quantitative evaluation of land intensive use and the comprehensive level of urbanization of Korla City, analyzing the relationship between the two systems. According...
The cost of cellulase is the main barrier of the production of the liquid bioenergy-the second generation of bioethanol. It is very important for the development of cellulase to study the regulation method of the nitrogen source in the liquid fermentation medium with Trichoderma viride. The results showed that the type of the nitrogen source, the amount, the ratio, the adding time of the inorganic...
The development and evolution of town met the demand for their own physical space structure, activity and space growth. The landscape spatial form of town with Chinese characteristics shaped place special spatial structure of the ancient townscape. Although the development of all town could not be separated from shaping physical spatial and people's activities, about it also continues to grow and...
This thesis analyzes the development of power fiber to the home (PFTTH), and historical necessity of intelligent electrical network in user terminal development. Through the illustration of electricity system design scheme of intelligence community based on the PFTTH and the research of intelligent home function about the pilot project of electric power fiber to the home in henan, it puts forward...
The theme of this paple is the first design & application study of optical phase conductor (OPPC) with 48 fibers on three different 110kv transmission lines in Sanmenxia. According to this project, we hope that a reference can be offered for the other transmission line. As the application of design, production and engineering construction in OPPC become more and more mature, we believe that OPPC...
The cost of pretreatment is one of the main barriers of the production of the liquid bioenergy-the second generation of bioethanol. It is very important for the development of the effective pretreatment method. The new method of combining wet oxidation with steam explosion was potentially prospective. The results showed that the enzymatic hydrolysis efficiency of lignocellulose was related to the...
This paper analyzes the prospect and the associated impact on power grid of large-scale applications of electric vehicles, and the countermeasures to reduce such kind of impact. Electric public bus, electric mini-car and electric passenger car have good prospects, so that they will became a great charging load. It also will produce a variety of disadvantage effects to the distribution network under...
According to environmental behavior of people, environment-friendly city evaluation index system was established on the four levels: the environmental quality and resource pressures, the production of environmentally friendly behavior, environment-friendly living behavior, and environmental friendliness of government behavior. The calculation methods of the human — water coordination coefficient,...
In this paper, nine lakes of Nanjing city (Huashen Lake, Baijia Lake, Yueya Lake, Mochou Lake, Nanhu Lake, Pipa Lake, Qianhu Lake, Zixia Lake, and Xuanwu Lake) were selected and sampled seasonally, in order to analyze relationships between trophic level and phytoplankton community structure. Results showed that two lakes were mesotrophic, three lakes were light eutrophic, three lakes were medium eutrophic,...
For civil air defence geographic information data with large amount of data, data type complex, with geographic space information and attributes information, the ArcSDE the characteristics of the data storage and management, to achieve the geographic data pretreatment, geographic information management, visualization, inquires the statistics, the terrain analysis, navigation and positioning, information...
South-to-North Water Diversion water district charge with optimal allocation of water resources as a whole a major strategic task. This paper combines the significance of the establishment of ecological compensation in Henan water district of the Middle-line Project, analyses the problem that exists in the ecological compensation implementation and also gives suggestion.
Ancient building protection conducted in different place was an effective method for the ancient building protection. There were abundant ancient buildings in Longyou city. The ancient building structures in Longyou city were surveyed by using the traditional method. Their level control points were surveyed by using fourth-order leveling. Their distances and angles were surveyed by using ordinary...
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