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According to the intricacies of the actual coal blending operation, based on the analysis of large amounts of data, applying mathematical modeling and the principle of lowest cost to establish model. Constraints were developed relying on the linear additive of the indicator to simplify the practical problems and abstract the reasonable mathematical structure, so it can solve the optimal ratio of each...
Teaching process in college has the characteristics of Markov chain, and, evaluation of university teaching plays an important role in improving the management levels. By using the Markov chain, it selects four ranks of comprehensive evaluation results in different specialties to make an analysis in state shift; then, it carries on the specialized teaching gradual appraisal by means of transfer matrix's...
Abstract- The nitrogen removal effect of catching bed biofilm reactor based on traditional biofilm process was investigate. The result indicates, steady removal effect with 87.81% of average COD removal rate was achieved in various dissolved oxygen(DO) concentrations.When DO was between 0.7~1.1 mg/L, removal rate for NH4+-N and TN 94.7% ,53.8%,respectively.When DO was controlled in 1.2~2.0 mg/L, 94...
To make accurate forecasts on the settlement of bioreactor landfill, the total settlement model is established based on the primary compression and secondary compression settlement. This model avoids the problem that index is difficult to determine in the Sowers model. The comparison of theoretical calculation and test results shows that the more satisfactory results will be obtained using the settlement...
The information and transportation technology are bringing great influence on the development of construction industry. Some fundamental transformations have happened in many aspects of construction industry, such as organization and management, operation procedure, exploiting direction etc. On the condition of the development of technology and theory innovation, the construction industry is both...
This paper reviews College students frequently have more complex problems today, including both the typical or expected college student problems difficulties in relationships and developmental issues as well as the more severe problems, such as depression, sexual assault and thoughts of suicide. That is the finding of a study involving 600 students seeking help in Henan Polytechnic University over...
In the biodegradation of Formaldehyde gas with a biotrickling filter, a portion of Formaldehyde is solved in the recirculating trickling liquid. As a consequence, the treatment efficiency is limited. The study explored the feasibility of removing the liquid-phase formaldehyde by inducing chemical reactions in the trickling liquid. Experiments were conducted to test three chemicals (sodium sulfite...
Application of C/D analysis method to seismic evaluation and retrofit of urban grade Separation Bridge were discussed herein. Firstly, based on previous earthquake damage, the weak elements of urban grade separation bridges were concluded in this paper. Secondly, main process of C/D analysis method and the way of getting capability indexes were discussed . Thirdly, taking an urban grade separation...
Based on the analysis of present research data of shallow tunneling, it was found that soil loss rate had different trends with the increasing of soil depth. The settlement formulas of deep soil of oval convergent model caused by shallow tunneling were deduced. Using stochastic medium theory to calculate practical cases, it was proved that with the increasing of soil depth, soil loss rate was not...
Geosmin (GSM) and 2-methyl isoboneol(2-MIB) are the major compounds causing the odor of water body. A new method for the qualitative and quantitative analysis of GSM and 2-MIB, which isolated and enriched the odor compounds from the water samples by using Headspace solid-phase micro extraction (HS-SPME), and detected the two substances using GC/MS with internal standard method, was developed. The...
This paper studies the history of Diffusion Theory, put forward two new concepts of Tarde - Rogers Hypothesis and "Ryan - Gross" Paradigm. It's other theoretical significance is that introducing the classic hypothesis and paradigm of Diffusion Theory into Network News Communication and obtaining an empirical support. As for it's methodology, this paper puts forward some theoretical hypotheses...
In this paper, the GIS application in the emergency command and status of JDL information fusion model and the characteristics of the five stages are introduced. With combination of GIS and the JDL, studied the characteristics of the campus emergency command, combined with the actual situation and needs, analyzed and re-definition of the five stages of information fusion, information fusion model...
To solve the problem of supplier selection, the author considered the multiple attributes and established multi-attribute decision making model decided by many people. Firstly, the supplier's comprehensive scheduling is given by using TOPSIS method ,then determining group scheduling which is the most consistent to each member's scheduling by using Cook - Seiford function included in SCF (social choice...
The steady advance and healthful development of new countryside construction must depend on the scientific planning. The planning must be based on the correct, complete and good-currency status maps. Aiming to the urgent needs in practice, four approaches to producing status base maps, including integrated approach, generalized approach, updated approach and real-surveyed approach, are comparatively...
Modern enterprise need to continuously provide customers with perfect services to maintain its competitive edge. Therefore, the enterprises attach great importance to service innovation activities. For enterprises, how to assess the success of service innovation, to guarantee the rate of service innovation success has become urgent practical problems. Based on this real problem, this paper takes empirical...
Efficiency is one of the important issues for middle school and its results can be served as a direction to invest. We propose a data envelopment analysis (DEA)-based approach to ranking education efficiency of middle schools. The paper give an evaluation results about seven middle schools through six indicators based on DEA. The results indicate that some difference of development level exists and...
An issue of considerable importance, involves the problem of how to simultaneously allocate a fixed input resources and set targets among a set of competing entities in an equitable way. Based on data envelopment analysis (DEA), the current paper proposes a new method for simultaneously allocating fixed input resources and setting targets to all decision making units (DMUs), in such a way that all...
Strategic choice for enterprises is a complex multi-level question of decision-making, and the traditional qualitative methods can't meet the needs of the decision. Considering the various qualitative and quantitative indicators, this paper uses the fuzzy synthetic evaluation methods featuring in entropy of information based on SWOT to establish the strategic choice model of the decision-making, and...
The present problem of practical teaching management was analyzed, and the detailed ways was brought out to reform and improve management modes of practical teaching: sound regime, emphasizing practical teaching system, personnel construction and university and enterprise cooperation, increasing the hardware input, perfecting the system of quality protection and evaluation, and so on.
As the third profits source, logistics plays a more and more important role in economic development. Service innovation is a strong driving force for the development of logistics enterprise, and the research on characteristics of service innovation will provide a theoretical basis to implement innovation activities in logistics enterprise. This paper starting with the characteristics of general service...
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