bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on Corporate Governance Optimization Considering Power Enterprise Mixed Ownership System Reform
Authors: Xu Zhaoyang , Ye Feng , Zou Shaohong , Wang Yuan , Wei Qiushuang , Yin Yu
Published: September 2018

Mixed ownership system reform is the focus of current state asset reform, and the reform efficiency of power enterprise attracts worldwide attention. This paper discusses the mixed ownership system reform of power enterprise from the angle of corporate governance. First of all, this paper will analyze the corporate governance situation and existing problems from ownership structure and other two aspects. Second, the corporate governance model of power enterprise is constructed. Third, governance optimization measures will be put forward and the conclusion is obtained. This paper hopes to provide certain reference for corporate governance of mixed ownership system reform of Chinese power enterprises.
Grey Relational Grade Based Quantitative Analysis of the Factors Influencing the Load Characteristics of A Power Grid
Authors: Pan Wei , Lei Caijia , Jia Wei , Gao Hui , Fang Binghua
Published: September 2018

Regarding analysis of load characteristics of a power grid, there are multiple factors that influence the variation of load characteristics. Among these factors, the influence of different ones on the change of load characteristic is somewhat different, thus the degree of influence of various factors needs to be quantified to distinguish the main and minor factors of load characteristics. Based on this, the grey relational analysis in the grey system theory is employed as the basis of mathematical model in this paper. Firstly, the main factors affecting the load characteristics of a power grid are analysed. Then, the principle of quantitative analysis of the influencing factors by using grey relational grade is introduced. Lastly, the load of Guangzhou power grid is selected as the research object, thereby the main factor of temperature affecting the load characteristics is quantitatively analysed, such that the correlation between temperature and load is established. In this paper, by investigating the influencing factors and the degree of influence of load characteristics, the law of load characteristics changes can be effectively revealed, which is of great significance for power system planning and dispatching operation.
Orthogonal Experiments on Ozone Oxidation Denitration of Sintering Flue Gas
Authors: Yang Yingxin , Zhong Lu , Xue Xueliang , Hu Jingling , Hu Xiaotu , Liu Yong
Published: September 2018

Ozone oxidation denitration process has become the most closely watched sintering flue gas denitration technology currently. In order to investigate the influence of different operating conditions on NO oxidation in practical engineering application of this technology, an ozone oxidation system was built, and sintering flue gas was extracted from the pipeline between the induced draft fan and the desulfurization tower. The influence of flue gas flow and inlet NO concentration on NO oxidation was investigated by orthogonal experiments. The results indicated that NO oxidation efficiency increased with the O3 yield of ozone generator and O3 dosage under any flue gas conditions. Under the same inlet NO concentration, NO oxidation efficiency decreased with the increase of flue gas flow. Under the same flue gas flow and O3 dosage, with the increase of inlet NO concentration, the O3 utilization rate increased while the average oxidation energy consumption of each NO molecule decreased, which was beneficial to promote the NO oxidation efficiency. In practical engineering application, the setting of O3 dosage should take into account both engineering design indicators and economy. Ozone oxidation denitration process could achieve NO oxidation efficiency higher than 90% through reasonable design, indicating a good industrial application prospect in the treatment of sintering flue gas.
Research on Energy Saving Audit of Construction Based on Carbon Emission Perspective
Authors: Liu Huan , Zhou Yu
Published: September 2018

This paper studies the contents and methods of building energy conservation audit from the perspective of carbon emission, the purpose of which is to have a fair idea of the existing buildings' carbon emissions, get the hang of the similar buildings' carbon emission laws, transform existing buildings, supervise and guide the proposed building, and finally achieve the ultimate aims of energy-efficiency, carbon reduction and environmental protection in construction. In this paper, how to examine, analyse and evaluate the energy conservation of buildings is studied and explored, and a beneficial attempt is made on the specific audit method of carbon emissions.
Study on defects detection technique of precise optical element
Authors: Zz Mi , Cong C , Cheng Y , Hm Zhang
Published: September 2018

Aiming at the problems of low efficiency of traditional detection methods for surface defects of precision optical element and inconvenient detection for optical elements of different calibers, a adjustable optical element defects detecting device for large laser devices is designed. The key technical points of system composition, detection environment, illumination design and image stitching are expounded. According to the characteristics of surface defects of optical element, such as the difference of contour, gray scale, contrast and ambiguity, a classification method based on FCM is proposed. The experimental results show that the system can realize the automatic detection of surface defects, also it can effectively distinguishes micron-scale defects and has good defect recognition performance. The overall average recognition rate reached to 93.3%.
Residential power user segmentation based on k-means clustering method in the context of big data
Authors: He Yongxiu , Jiao Zhe , Chen Fenkai , Guang Fengtao , You Peipei , He Qing
Published: September 2018

With the deepening of the reform on the selling side of electricity, the selling company must strengthen the analysis on the electricity consumption of users and arrange the purchase and sale of electricity scheme scientifically so as to occupy the target selling electricity market and obtain the profit of selling electricity. Based on the big data background, the paper uses the k-means clustering method to divide the load curve of 2,498 residential power users into 5 categories. On the premise of considering the system load, the above five categories are classified into three types: peak load, partial peak load, and stable power users.
Numerical Simulation Analysis of Collapse Process of Isolated Structure in Strong Earthquakes
Authors: Ren Yue , Wang Ruidong , Liu Wenguang , He Wenfu
Published: September 2018

In this paper, the Abaqus model of an 8 layer isolation structure is established, and the connector element provided in the software is used to simulate the stiffness multilinearity in the horizontal and vertical direction of the isolation bearing. In the numerical analysis, six kinds of working conditions are set up to compare the vertical displacement, the peak acceleration and the interlayer displacement etc, and the effect of bearing failure on the superstructure is obtained.
Variables and Applications on Dry Magnetic Separator
Authors: Zong Qin Xing , Fu Luo Zhen , Bo Lv
Published: September 2018

Magnetic separation is an indispensable part of magnetic separation, and the dry magnetic separator can be selected under the condition of water shortage in China to ensure that our country can also be selected under the conditions of lack of some resources. The magnetic separator plays a role in improving the grade of ore, purifying solid and liquid materials, and recycling waste. With the application and development of magnetic separation technology, magnetic separation equipment is constantly updating and replacing, and dry magnetic separation has experienced remarkable technological progress over the past twenty years. There are many new ideas and techniques applied in magnetic separators. So far, dry magnetic separators have developed many different applications for mineral and coal processing, for induction roller magnetic separators for chromite. Cross-belt magnetic separator for removing harmful magnetic particles and paramagnetic particles. The lifting roller magnetic separator is used in the heavy mineral industry to separate garnet from monazite and rutile. Rare earth drum magnetic separator for fine feed dry magnetic separation sorting process and rare earth roller magnetic separator for zircon and rutile in heavy mineral sand industry. These magnetic separators have different applications, and the dry magnetic separator is also moving toward large-scale and easy-to-manufacture.
Pediction method of rock stratum anti-diamond characteristics of carbonate rocks used in Qinghai YingXi block
Authors: Guohui ZHANG , Xiwen ZHANG , rong CHEN , Xinyun LIU , Hugui
Published: September 2018

At present domestic drillability prediction is mainly aimed at sandy mudstone formation, The aim is to study less carbonate strata. With the increase of carbonate exploration reserves, the development of carbonate is the main task facing oil companies. This paper has passed the indoor core test, combined with site logging data, research and analysis of mathematical statistics. The relationship between the rock drillability, compressive strength and acoustic jet lag, plasticity coefficient and poisson ratio, and the difference between the surface acoustic jet lag and the time difference between the wave jet and the wave jet were also found. A prediction model is established for predicting the parameters of drilling resistance in carbonate rocks using well logging data. In this paper, the anti-drilling characteristics of carbonate rocks in Yingxi block of Qinghai oilfield are analyzed, Provide reasonable basis for the selection of bit type in the area.
Evaluation of Sustainable Utilization of Arable Land in Mountainous Areas of Yunnan Province Based on the Second National Land Survey
Authors: Wen Zhong , Changbiao Zhong
Published: September 2018

Research content: The intrinsic attributes of mountainous areas, namely vulnerable ecology and highly sensitive environment, are highly restricting sustainable utilization of arable land in mountain areas. At present, the research is more detailed on the evaluation of sustainable utilization of arable land in mountainous areas in borderland, and evaluation of sustainable utilization of arable land in mountainous areas is one of the important bases for ensuring food security, maintaining border stability, and promoting sustainable economic and social development. With Yunnan Province as an example, on the basis that the special connotations of sustainable utilization of arable land in mountainous areas are explained, in combination with the Second National Land Survey, the index system is constructed from 3 perspectives, eco-friendliness, economic feasibility, and social acceptability, and variation coefficient method and comprehensive index method are used to calculate the level of sustainable utilization of arable land and for grading. Research method: Progress in research on evaluation of sustainable utilization of arable land is learnt by literature review, and the research area is empirically analyzed by method of comparative analysis and qualitative-quantitative combined method. Conclusions: The arable land in the mountainous areas of Yunnan Province is generally in a state of sustainable utilization. Moderately sustainable and unsustainable cities and prefectures are almost equal, but there is no sustainable city or prefecture. In terms of spatial distribution, the level of sustainable utilization of arable land in mountainous areas is lower especially in mountains and highlands of the northeast Yunnan, and high mountains, highlands and canyons of the northwest Yunnan. Most of those areas are subject to a level of unsustainable utilization. The level of sustainable utilization of arable land in mountainous areas is higher in middle and eastern Yunnan.
Is There A Quick Path For Valuation Of Ecosystem Services?-A Comparative Study In Xiu River, China
Authors: Wei Tongyang , Yang Yong
Published: September 2018

This paper uses the valuation of Xiu River Hydrological Regulating services in Jiangxi province, China as a case study to compare 3 methods to value the ecosystem services, i.e improved contingent valuation method, choice based conjoint analysis and special benefit transfer method. Willingness to pay is estimated by using Logit and Clogit with contrasting controls for non-protests residents. This study discusses the implications of these findings and direction for related future researches into the ecosystem services valuation in China. Appropriate methods should be used for different valuation proposes, rather than blindly using special benefit transfer method just for its convenience. China should construct Ecosystem services value table based on Chinese case studies.
Analysis and Development Exploration of Ancient Villages Based on Rural Revitalization Strategy -Take Zheshui Village in Shanxi Province as an example
Authors: Chongen Wang , Jiafang Chai
Published: September 2018

Ancient villages are the carriers of traditional culture, lifestyle and social ideology based on a certain economic and social structure. They are the integration of humans and nature and the accumulation of history for thousands of years. Ancient villages in Shanxi Province are too numerous to enumerate, but with the changes of the times, ancient villages are facing severe challenges because they cannot meet the needs of modern society. Based on the country's strategy for rural revitalization, the author passed field research on Zheshui Village in Lingchuan County. From the analysis of the village's material form and spiritual form, a preliminary exploration was made of the development of the ancient villages.
Study on Bohai sea ice based on MODIS data
Authors: ye Zhou , Zhaopeng Fan
Published: September 2018

Based on MODIS L1B data, we identify information of sea ice area, peripheral line and density, and also use Landsat data with higher resolution to verify the results obtained from MODIS data. Using pseudo color processing technology is more intuitive and more clear to show the various information of the Bohai sea. The whole process of sea ice information extraction is described in detail from MODIS data downloads to image processing and analysis. The selected data basically cover the entire process from the initial ice age, the peak ice age to the final ice age. The ideal results are obtained, and it also shows that the MODIS satellite data is feasible to monitor sea ice, which provides a reference for the establishment of monitoring sea ice model.
Research on Credit Evaluation Model of Online Store Based on SnowNLP
Authors: Chen Caixia , Chen Jue , Shi Chun
Published: September 2018

The online store credit rating is a reflection of the seller's integrity and the quality of the product. The level of the credit rating directly affects the buyer's desire to purchase. Two important factors affecting the credit rating are data and models. The innovation of this research is that the collected data comes from the second evaluation, and the credit evaluation model is improved based on the snowNLP tool, and the malicious brushing filtering function is added. Compared with the credit evaluation system commonly used in current online stores, the evaluation results of the paper are more accurate, detailed and intuitive, and may effectively reduce false brushing and threat review.
Numerical Investigation the Effect of the Different Tip Vanes on the Loading of an H-VAWT
Authors: Shoutu Li , Yin Wang , Congxin Yang , Ye Li
Published: September 2018

In this paper, the effect of the three typical tip vanes on the loading of an H-VAWT is investigated by employing the three-dimensional unsteady numerical simulation method. The results show that the both transient tangential force coefficient (CT) and normal force coefficient (Cn) have obvious change when the winglet and the V type vane is used at the blade's tip, respectively. However, in three tip vanes, the CT average value is the lowest and the CT fluctuation characteristic is the highest when the winglet is used. Although the winglet and V type vane contribute to change the transient CT and Cn, the normal force is increased too, it results in increasing fatigue loading and decreasing lifetime for H-VAWT. By comparison, the effect of the plate vane on the loading is weaker. Additionally, the winglet is advantage to improve power coefficient in the low tip speed ratio.
Research on the Strategies of Tourism activation of Traditlonal Villages: Taking the Village of Shanxi Dongjialing as example
Authors: Guo Yongjun , Wang Chong'en
Published: September 2018

Rural tourism has gradually become an important part of many forms of protection in traditional villages. Through the field research and analysis of existing literature and implemented projects, the main problems existing in traditional village tourism planning are summarized, and then taking the tourism activation of Dongjialing in Shanxi Province as an example, we will explore strategies to solve such problems and provide reference for the protection and utilization of traditional villages in China.
Development Based on Unity3D Virtual Campus Roaming System
Authors: Hu Yao , Li Jingwen , Han Xiaoqiang , Yuan Jiao
Published: September 2018

Virtual Reality has become more and more eye-catching with the development of computer technology in recent years and has become one of the hot technologies. As an important branch of virtual reality, Virtual Campus provides a new way to browse the campus. It uses advanced equipment to simulate the scenes on campus through computer, and gives users a new browsing experience, allowing users to interact with the Internet through the Internet. This article takes the North China Institute of Technology as an example, through SketchUp, Unity3D In a combined way, the development and design of a three-dimensional virtual campus is carried out. A virtual campus system for human-computer interaction in North China Institute of Science and Technology was realized.
Spatial Distribution Pattern and Interspecific Association Analysis of Thuja koraiensis Population
Authors: Zhao Ying , Jin Hui , Huang Liya , Chen Qinghong , Liu Lijie , Dai Yuhong , Yin Hang , Jia Xiang , Wang Chao
Published: September 2018

In this paper, the methods such as Clumping index, Aggregate index, CASSIE index, Diffusion coefficient C, K index in negative binomial distribution and m*-m wao regression, Taylor power law were used to analyze the spatial distribution pattern of Thuja koraiensis community. The results showed that the spatial distribution pattern of Thuja koraiensis community presented significantly aggregate distribution. Based on 2×2 contingency table, interspecific association analysis was conducted by means of Variance ratio method, χ2-test, Association coefficient, together with point correlation coefficient, The overall relevance of pure forest community where Thuja koraiensis population were distributed and scattered forest of Thuja koraiensis community both showed negative correlation. In the pure forest community, Thuja koraiensis was extremely significantly negatively correlated with Sorbus pohuashanensis(p<0.01), and positively correlated with other shrub species, but did not reach a significant level. In the scattered forest community, Thuja koraiensis was positively correlated with Euonymus rehderianus, Lonicera edulis, Rubus sachalinensis, Acer tegmentosum, and negatively correlated with other species. Studies suggest that protecting species which are positively correlated with Thuja koraiensis to form an environment conducive to the survival of specific species together has certain guiding significance for the protection and utilization of Thuja koraiensis community.
Stoichiometric Characteristics of Soil in Several Different Communities
Authors: Liu Xinyu , Li Shengxiu , Luo Fang , Ning Yan , Huang Biao , Yang Fan
Published: September 2018

The content of nitrogen, phosphorus, potassium and organic matter in soil is an important index to determine soil nutrient status. In this paper, the contents of nitrogen, phosphorus, potassium, organic matter and soil salt in the soil of several different plant communities in the campus were measured by the chemical measurement characteristics of several different communities in University of Jinan. The differences in the measurement characteristics of soil chemical measurement in different plant communities were analyzed. The results showed that the highest organic matter content in several communities was Cherry Blossom community, 76.33mg/kg, and the highest ammonium nitrogen content was 196.08mg/kg; the highest content of available phosphorus was the community of Begonia, 168.14mg/kg, and the highest content of available potassium was the community of Robinia pseudoacacia, which was the highest salt content in 64.99mg/kg soil. The community of cherry blossoms is 569 μs. There was little difference in soil organic matter, available phosphorus and available potassium in different plant communities..
Research on the Tourism Space Structure in Lingui District of Guilin Based on the Development and Utilization of Landscape Resources
Authors: Wen Zhengmin , Shi Jie , Qian Shuangbao , Xu Qing
Published: September 2018

The 257 scenic spots in Lingui covered 5 main categories, 14 sub-categories and 26 basic types, in which there were 33 natural scenic spots and 224 humanistic scenic spots, featured by rich resources stock, humanistic landscape resources-based, and significant space agglomeration; the quality levels are 11 high-quality scenic spots that most of them have been developed, 57 good scenic spots and 189 ordinary scenic spots that have big development potential; of the 36 scenic spots developed so far, 7 are natural, and 29 are humanistic(22 of them have been oriented by cultural relic protection sites); from initial scattered-point to intensive scattered-point to point-axis period, they showed stepped and multi-center structure situation. We found that: 1) five levels of growth pole have been formed; 2) The influence mechanism of development on tourism space is: the theme park is the greatest, the natural landscape resources is secondary and the cultural landscape resources is the least, the former-residence -type cultural relics protection sites and traditional villages have a certain influence, and the influence of high-level landscape resources is big in general. Based on the above results, we can build the tourism space structure with “one ring, one core, one sub-core, and three axes”.
Summary of the Study of International Trade Interests from the Point of Value Added Trade
Authors: Li Peng
Published: September 2018

International trade interest is an important value index to judge a country's participation in international trade activities, under the background of economic globalization, value added trade has become the focus of international trade interest. Compared with the traditional trade statistics law, the research result of international trade interest based on value added trade is more accurate and practical. This paper will discuss the interests of international trade from the perspective of value-added trade, and put forward personal opinions.
Expounding the Construction Technical Measures of Fair-Faced Concrete Construction
Authors: Liu Chenguang
Published: September 2018

Due to the acceleration of urbanization in China, construction technology in the construction field has also been continuously developed. The fair-faced concrete is often referred to as decorative concrete. It is a new type of concrete that has been continuously developed as people's demands for architectural decoration and it becomes more widely used in modern construction projects. In this paper, by introducing the types and composition of fair-faced concrete, a series of fair-faced concrete construction technical measures, as well as pouring and conservation measures, have been proposed in conjunction with actual construction projects, and examples have been analyzed in order to better apply the fair-faced concrete technology into modern buildings.
Research progress and prospects of CO2 enhanced shale gas recovery and geologic sequestration
Authors: Chen Rong , Zhang GuoHui , Yi ChengGao
Published: September 2018

CO2 injection to strengthen shale gas development is a new technology to improve shale gas recovery and realize geologic sequestration. Many scholars have studied these aspects of this technology: mechanism of CO2 displacement CH4, CO2 and CH4 adsorption capacity, affecting factors of shale adsorption CO2, CO2 displacement numerical simulation, and supercritical CO2 flooding CH4 advantages. Research shows that CO2 can exchange CH4 in shale formations, improve shale gas recovery, on the other hand shale formations is suitable for CO2 sequestration because shale gas reservoir is compact. The supercritical CO2 has advantages such as large fluid diffusion coefficient, CO2 dissolution in water to form carbonic acid that can effectively improve the formation pore permeability etc., so the displacement efficiency of supercritical CO2 is high. But at present the technology study mainly focus on laboratory and numerical simulation, there is still a big gap to industrial application, need to study combined effect of influence factors, suitable CO2 injection parameter in different shale gas reservoir, CO2 injection risk and solutions etc.
A study on the eco-design of consumer electronics
Authors: Zong Jianfang , Tian Jianwei , Gao Dongfeng , Chen Liang
Published: September 2018

This paper first introduces the definition, origin and development of product eco-design, compares the relations between eco-design and traditional design. This paper then explains the purpose, principles, ideas and contents of eco-design of consumer electronics, and expounds the requirements, procedures, key points and methods of eco-design of consumer electronics. Finally this paper points out the deficiencies and shortages, and development trend of eco-design of consumer electronics.
Design of An Intelligent Hierarchical System for Fingerprint Management of Electricity Loads Based on Operating Characteristics of Household Appliances
Authors: Tan Zhukui , Cheng Lefeng , Ding Chao , Xu Weifeng , Li Zhengjia , Zhao Lijin , Xu Guangyu , Yuan Xufeng , Liu Bin , Huang Wenjing
Published: September 2018

In order to facilitate the active identification capability of various types of electrical equipment, so as to enhance the functions such as the behavioural analysis and optimization control of electricity utilization in an automatic demand side management (DSM) system. A definition is given on load fingerprint based on operating characteristics of household appliances, as well as its architecture. In addition, based on the cyber-physical systems (CPS) technology, a hierarchical technical framework for load fingerprint management is proposed. This framework is a two-layer electricity utilization load fingerprint management platform, including local management and cloud-based management. Finally, two hardware prototypes are developed, including a socket-type smart collection terminal and an intelligent interactive concentrator with multiple communication technologies, which can provide strong hardware support for the realization of the hierarchical technical framework proposed in this paper.
Research of AHP/DEA evaluation model for operation performance of municipal wastewater treatment plants
Authors: Xiaoxin Zhang , Jin Huang , Ling Lin , Yueping Wang , Xinheng Zhang
Published: September 2018

The operation performance evaluation of municipal wastewater treatment plants is an extremely important and complex issue in the management of wastewater treatment plants. Based on constructing the operation performance evaluation index system of the municipal wastewater treatment plant in China, according to the characteristics of the analytic hierarchy process (AHP) and the data envelopment method (DEA), a comprehensive evaluation model combining AHP/DEA was established to evaluate the operation performance of the municipal wastewater treatment plants in China. AHP/DEA comprehensive evaluation model fully considers the subjective and objective factors with effectiveness and scientific nature.
Energy efficiency evaluation method for submersible pushingflow agitator for sewage treatment
Authors: Xiaoxin Zhang , Jin Huang , Ling Lin , Yueping Wang , Xinheng Zhang
Published: September 2018

This paper introduced the development and research advance of the submersible pushing-flow agitator for sewage treatment at home and abroad. By analyzing four factors affecting the energy efficiency of the submersible pushing-flow agitator, the energy efficiency evaluation method and calculation formula of the submersible pushing-flow agitator for sewage treatment in China are analyzed and discussed in this paper.
Application of Whale Optimization Algorithm in Optimal Allocation of Water Resources
Authors: Yan Zhihong , Wang Shuqian , Liu Bin , Li Xinde
Published: September 2018

In order to solve the water crisis, it is important to optimize the allocation of water resources. In this paper, the Whale Optimization Algorithm (WOA) is applied to the optimal allocation of water resources in Xingtai with the goal of maximum economic benefit and minimum total water shortage. The results show that the total water demand of different water users in each district is 26.94×108m3, the total allocated water is 19.83×108m3, the total water shortage is 7.11×108m3, and the water shortage rate was 26.39%. The lack of water is mainly concentrated in the primary industry. The result of the solution reflects the principle of water supply order and water use equity, which is in line with the actual development and utilization of water resources in the study area. It also verifies the feasibility of the whale optimization algorithm, such as less parameter adjustment, faster convergence, and better global optimization ability when solving water resources optimization problems.
Study on Water Disaster Prevention and Control Technology under Condition of Extra-thick Coal Seam with Slicing Fullmechanized Caving Mining
Authors: Li Jianghua , Lian Yuguang , Li Hongjie
Published: September 2018

Some coal seams belong to cretaceous strata in the east of Inner Mongolia, China. There are obvious differences of rock characteristics and mechanical properties between Cretaceous and Carboniferous- Permian strata. The overburden failure characteristics of extra-thick coal seam with slicing full-mechanized caving mining are studied through rock mechanics experiment, field observation and theoretical analysis and so on. Water disaster prevention and control method of roof and goaf is put forward under the condition of extra-thick coal seam with slicing full-mechanized caving mining. The final research results include: (1) The rock of cretaceous strata has low strength and soft characteristic, its stability is very poor, cretaceous rock belongs to weak type; (2) Under the condition of extra-thick coal seam with slicing full-mechanized caving mining, the ratio between caving zone and mining height of field observation result is 4.58～4.74, the observation results of two boreholes are close; (3) It is significantly effective to prevent and control water disaster from goaf through roof hole drainage method, coal and rock safety pillar remain method is used to limit mining height under the Tertiary gravel aquifer, which makes the working face exploit safely.
Research on lateral flow treatment technology to enhance phosphorus removal of AAO process
Authors: Zhang Shoubin , Li Yuze , Jiao Wenhai , Qiu Liping , Zhong Jingxiu , Sun Wei
Published: September 2018

Removing efficiently and recycling of phosphorus in the wastewater, was not only an effective means to prevent and cure the eutrophication of water, but also an important way to realize the recovery of phosphorus resources. In the traditional AAO process, the discharge of phosphorus rich sludge could reach the goal of phosphorus removal. However, the treatment of phosphorus rich sludge was difficult and could not achieve the goal of phosphorus recovery. The lateral flow phosphorus removal treatment technology, building on the side of the traditional AAO system, was an efficient process to realize high efficiency phosphorus removal and phosphorus resources recovery by forming phosphate precipitation or crystallization. In this paper, by summarizing and analyzing the existing technology of lateral flow phosphorus recovery wastewater treatment based on AAO mainstream technology, the future development of this technology was also prospected.
Study on operating flux of plate ceramic membrane treating municipal secondary effluent of WWTP
Authors: Zhang Shoubin , Zhong Jingxiu , Jiao Wenhai , Qiu Liping , Li Yuze , Sun Wei
Published: September 2018

In recent years, plate ceramic membrane has been applied in the field of water and wastewater treatment successfully, because of its unique advantages. As an important parameter which can characterize properties of membrane, the water flux and critical flux of plate ceramic membrane treating municipal secondary effluent of Wastewater Treatment Plant(WWTP) were studied in this paper. And the flux change characteristics under different membrane pressure were obtained. The experimental results laid foundation for further exploring of mechanism of membrane fouling and related control techniques, and provided references for expanded application of plate ceramic membrane in wastewater reuse.
Research on the Tourists’ Type and Behavior based on the Fog and Haze Perception: Taking Xi’an as a Case
Authors: Jun-hui Yang
Published: September 2018

Under the background of tourism affected by the fog and haze, this study takes Xi’an as a case, focuses on the tourists’ type and behavior, and forms the following conclusions. The tourist can be divided into blunt type, normal type and sensitive type based on the perception to the fog and haze. The blunt type has demographics of male, elderly people, lower educated, low income, and from the North of China. The sensitive type has demographics of female, single, middle-aged, higher educated, and from the South of China. The blunt and sensitive types who pay less attention to the fog and haze in the before travel stage, have a rational willingness behavior, and have a significant increase on the attention rate to future decision after this travel. But the sensitive type prefers to the quality and healthy behavior in the stage of during tour.
Analysis of Environmental Benefits of Shore Power for Preventing and Controlling Air Pollution Caused by Vessels at Berth
Authors: Jieling Cheng , Haibo Li
Published: September 2018

When vessels are berthed at ports, the air pollutants emitted by auxiliary engines will cause severe pollution to the ports and surrounding environments. In view of this situation, the author first summarizes the Chinese policies and policies of foreign countries on emission of air pollutants from vessels at berth, and then analyses the current status of and measures for control of air pollutant emission from vessels at berth. Secondly, the author analyses the environmental benefits of using shore power for better controlling air pollutant emission from vessels at berth, compares vessels using shore power with vessels using generated power in the energy conservation and emission reduction effects based on the fuel consumption rate of different auxiliary engines and current status of pollutant emission from power generation in China etc., analyses the current status of shore power application in China, estimates the energy conserved and emission reduced when shore power is used by vessels at berth. Thirdly, the author identifies the scale of electric energy replacement by, and environmental benefits of, shore power at ports in China. This paper delivers innovative approaches to the comparison between the effects of energy conservation and emission reduction based on fuel consumption rates of different auxiliary engines and estimation of conserved energy and reduced emission.
The Research Advances of Bioremediation Technology on the Petroleum Pollution Treatment
Authors: Shen Qiuhua , Wang Xiaojie , Ma Zhenchao , Wang Shuang
Published: September 2018

Petroleum pollution has become a well concerned environmental problem. Renovating and controlling the petroleum pollution is an important guarantee to recover the environmental function. In recent years, the effect of bioremediation technology in eliminating petroleum pollution has been concerned by people gradually, of which, the effect of microorganism is the most important part. The paper discusses the source of petroleum pollution, the hazard of petroleum pollution, bioremediation mechanism and bioremediation technology of petroleum pollution and prospects the development trend and application of microorganism in renovating water in the petroleum pollution.
The evolutionary game analysis of cross-regional ecological compensation - based on the perspective of the main functional area
Authors: He-si PAN , Hong-zhi LIU
Published: September 2018

Under the new normal, the carrying capacity of ecological environment in China has reached or approached the upper limit. The root cause is the lack of an endogenous mechanism for the protection and compensation of forest resources. Therefore, clarifying the game relationship between stakeholders can help to break through the dilemma. An evolutionary game model between beneficiary regions and the protected regions was constructed, based on the “restraint-encouragement” mechanism of the central government.The results show that in cross-regional ecological compensation, the optimal strategy of “ protectioncompensation” depend on the net profits of local governments and the central government's fines.
Improvement of Rainwater Infiltration Property and Its Effect on the Corresponding Storage Capacity of Soil in Urban Green Space
Authors: Keke LOU , Zhengguang WU , Zhiping LU , Aihong KANG , Chengsheng YIN , Xueling XU
Published: September 2018

Urban green space whose soil permeability is the main factor affecting hydrological cycle plays a very important role in promoting rainwater infiltration, replenishing groundwater and reducing peak flow. In order to enhance the storage and infiltration ability of soil, different types and contents of conditioner are added to study the laws of the changes in permeability of various soils. The results showed that straw and sawdust can effectively increase the permeability coefficient of soil. According to the comparison under the same conditions, the improvement effects of straw is slightly better than sawdust, but no order of magnitude difference. The sandy soil reformed by 3.6% Straw or 4.2% Sawdust and the loam reformed by 29.5% Straw or 30.2% Sawdust can meet infiltration requires of rainwater whose rainstorm recurrence period is 10 years. The clay is not suitable for urban green space soils with higher rainwater storage and infiltration requirements. The reformed green space can effectively reduce the runoff peak flow and delay the generated time of the runoff. The higher the content of the modifier, the more obvious the advantage of promoting the hydrological cycle and reducing the runoff.
Practices of Constructing Green Environment on Campus
Authors: Jixionga Yuan , Ping Li
Published: September 2018

University campus is the place to live and work of college students and teachers. It is important to build a green environment. The article focuses on north campus of GTIIT, the characteristics of region climate environment are introduced, the overall campus layout, physical wind environment, optical environment, acoustic environment and campus landscape are analyzed.
Topological insulators: how the deep controls the superficial
Authors: Asboth Janos K.
Published: September 2018

Topological insulators prevent current from passing through, but also ensure that it flows unimpeded from contact to contact on their surface. The combination of ideas from topology and band theory to explain and generalize this peculiar behaviour has had a transformative effect on condensed matter research.
A tribute to Max Planck
Authors: Kubbinga Henk
Published: September 2018

Physics seemed complete, in the 1890s. The accomplishments of the kinetic theory of gases were impressive, though some details remained to be solved. The new rays, of all kinds, were just novelties to be embedded in the well-established overall picture. Heat radiation, though, proved disturbing. In its purest form, emitted by a source at constant temperature and, subsequently, refracted by a prism, the spectrum being scanned by a bolometer, it produced curves similar to the statistical distributions current in the kinetic theory. Max Planck was the first to realize the far-reaching consequences. It brought him the Nobel Prize for Physics of 1918.
Fuzzy Performance Measurement System for the Maintenance Function
Authors: Naji Mehdi Amine , Mousrij Ahmed
Published: September 2018

Maintenance aims to sustain the manufacturing process by ensuring that the production tools are well managed. However, modern production means are more automated and therefore more complex, so they require a performing maintenance for which planning and implementation are increasingly difficult. This paper, therefore, emphasizes the elaboration of a maintenance performance measurement system. Therefore, for an appropriate and reliable performance evaluation, we adopt a multi-level multi-criteria approach where every criterion influencing the maintenance performance either indirectly or directly are specified. Thereafter, indicators for the specified criteria would be measured using fuzzy logic to overcome limitations due to lack of available resources and data. For a global maintenance measurement, the elementary measurements will be aggregated into a total measurement through a multiple-criteria decision-making method such as MACBETH.
Optimizing the Multi-Objective Deployment Problem of Mlat System
Authors: Fadil Rabie , Abou El Majd Badr , El Ghazi Hassan , Rahil Hicham
Published: September 2018

Multilateration (MLAT) systems are powerful means for air traffic surveillance. These systems aim to extract, and display to air traffic controllers identification of aircrafts or vehicles equipped with a transponder. They provide an accurate and real-time data without human intervention using a number of ground receiving stations, placed in some strategic locations around the coverage area, and they are connected with a Central Processing Subsystem (CPS) to compute the target (i.e., aircraft or vehicle) position. The MLAT performance strongly depends on system layout design which consists on deploying the minimum number of stations, in order to obtain the requested system coverage and performance, meeting all the regulatory standards with a minimum cost. In general, choosing the number of stations and their locations to cope with all the requirements is not an obvious task and the system designer has to make several attempts, by trial and error, before obtaining a satisfactory spatial distribution of the stations.

In this work we propose a new approach to solve the deployment of Mlat stations problem by focusing on the number of deployed stations and the coverage as the main objectives to optimize. The Non-dominated Sorting Genetic Algorithm II(NSGA-II) was used in order to minimize the total number of stations required to identify all targets in a given area, with the aim to minimize the deployment cost, accelerating processes, and achieve high availability and reliability. The proposed approach is more efficient and converge rapidly which makes it ideal for our research involving optimal deployment of Mlat station.
Machine Learning for Supply Chain’s Big Data: State of the art and application to Social Networks’ data
Authors: El-Khchine Radouane , Amar Amine , Guennoun Zine Elabidine , Bensouda Charaf , Laaroussi Youness
Published: September 2018

In the context of today ’s pattern of globalization and a huge amount of information, a smart supply management chain is required. Naturally, statistics and operations research are used for optimizing supply and demand objectives. However, the new context brings out new opportunities at descriptive, predictive and prescriptive levels for supply chain network design, logistics and distribution and strategic sourcing. The key question is still how to capture and to use information. One striking example can be taken from social media, where their use allow to gain insight into the perception of consumers and to capture a real time overview of consumer reactions, regarding one or more specific events. In this regard, different modern approaches, such as IoT or Quantum neural network, are developed. In the same line of thought, we propose an analytic approach, based on KNN, Logistic Regression and SVM with the use of Twitter data in chicken supply chain management. Results identify the main concerns related to chicken products and allow to the development of a consumer-centric supply chain. The proposed approach can be extended to other topics such as anomaly detection and codification of customer intelligence.
Benefits and limitations of the SCOR®model in Automotive Industries
Authors: Lemghari Radouane , Okar Chafik , Sarsri Driss
Published: September 2018

The automotive industry’s supply chain has been extensively researched but has tended to focus on the component production sections of the chain. Indeed, the automotive industry needs a structured model that encompasses the entire fragmented, uncertain and complicated industry. For this reason, the SCOR®model was chosen in this study because it contains well-defined and standardized processes and metrics for performance measurement and comparative analysis of the entire supply chain and not only internal processes. In this context, the objective of this paper is to concretize the application of the SCOR®model in an automotive company by following the steps and guidelines described by the supply chain council that designed this model. Then, several contributions and benefits of the application of this model in the automotive sector will be raised based on this case study and especially on the interviews conducted with the various practitioners and specialists in the supply chain. On the other hand, a list of limitations and difficulties encountered during and after the implementation of this standard will also be collected. Although this study is primarily oriented towards a university audience, it can also be interesting and useful for practitioners, who will be able to gain an understanding of the purpose of the existing research and to have access to a real-life example of the application of this model in the automotive sector.
Bifurcation and Chaos Analysis of Gear Pair System Based on Crack Rotor-Bearing System with Rub-Impact Effect
Authors: Chang-Jian Cai-Wan , Wang Cheng-Chi , Chu Li-Ming
Published: September 2018

This study performs a systematic analysis of the dynamic behavior of a crack rotor-bearing system with rub-impact effect. The dynamic orbits of the system are observed using bifurcation diagrams plotted using the dimensionless damping coefficient, the dimensionless unbalance parameter and the dimensionless rotational speed ratio as control parameters. The analysis methods employed in this study include the dynamic trajectories of the crack rotor-bearing system, power spectra, Poincaré maps and bifurcation diagrams. Lyapunov exponent and fractal dimensional analysis are also used to identify the onset of chaotic motion. The numerical results reveal that the system exhibits a diverse range of periodic, sub-harmonic, quasi-periodic and chaotic behaviors. The results presented in this study provide an understanding of the operating conditions under which undesirable dynamic motion takes place in a crack rotor-bearing system and therefore serve as a useful source of reference for engineers in designing and controlling such systems.