Zhanxin Ma

• Professor
• Inner Mongolia University

Continuous and rapid economic development has brought about excessive resource consumption and environmental pollution. Therefore, it is particularly essential to coordinate economic, resource, and environmental factors to achieve sustainable development. This paper develops a new data envelopment analysis (DEA) method that can be used for multi-le...

In the context of the COVID-19 global epidemic, it is particularly important to use limited medical resources to improve the systemic control of infectious diseases. There is a situation where a shortage of medical resources and an uneven distribution of resources in China exist. Therefore, it is important to have an accurate understanding of the c...

Traditionally, data envelopment analysis (DEA) requires all decision-making units (DMUs) to have similar characteristics and experiences within the same external conditions. In many cases, this assumption fails to hold, and thus, difficulties will be encountered to some extent when measuring efficiency with a standard DEA model. Ideally, the perfor...

The ranking of decision-making units (DMUs) is one of the most significant issues in efficiency evaluation. However, the calculation results from the traditional DEA method sometimes include multiple efficient DMUs or multiple DMUs with the same efficiency value, in which case the approach is weak in distinguishing among these DMUs. Therefore, this...

As haze intensifies in China, controlling haze emission has become the country's top priority for environmental protection. Because haze moves across different regions, it is necessary to develop a data envelopment analysis (DEA) model underpinned by both competition and cooperation to evaluate the haze emission efficiency in different provinces. T...

Data envelopment analysis (DEA) method based on game theory effectively ranks the decision-making units (DMUs) by the view of cooperation or competition. The DEA method based on partial ordered set theory depicts the relationships among DMUs. However, these methods are unable to reveal the complex cooperation and competition relationships among DMU...

Some efficiency antinomies can be found by example analysis when most of important DEA models are used. Namely, the higher the evaluation standards is, the larger the efficiency value of a fixed decision-making unit. In order to explore the occurrence causes and solution method of DEA efficiency antinomy, this paper firstly proves that the efficien...

In this article, the barycentric interpolation collocation methods is proposed for solving a class of non-linear advection-reaction-diffusion system. Compared with other methods, the numerical experiment shows the barycentric interpolation collocation method is a high precision method to solve the advection- reaction-diffusion system.

This study examines the total factor productivity (TFP) changes in the Malaysian water services industry from 1999 to 2012 using a global Malmquist Luenberger index method incorporating an undesirable output, namely non-revenue water. The results show that the Malaysian water services industry experienced a declining TFP of 0.72 percent per year, w...

Data envelopment analysis (DEA) is an important efficiency evaluation method, and it is especially suitable for analyzing the complex systems. However, DEA method also has some disadvantages that cannot be overcome in practical application because of the complexity of index system. It mainly shows in the following aspects. Firstly, the evaluation res...

The effect of urbanization on carbon emissions efficiency is very complex and plays a prominent role in carbon emissions reduction. In this paper, we divide the effect of urbanization on carbon emissions efficiency into four aspects, and bring forward an ideal point cross efficiency (IPCE) model in order to avoid the disadvantage of ‘self-evaluatio...

When we evaluate the efficiency by applying data envelopment analysis (DEA), it is necessary that all of the indexes must have a preference, that is, the bigger the better or the smaller the better. However, when the neutral indicator is among the evaluation index system, the traditional DEA methods will unable to solve such issues. Therefore, base...

There exist two problems that need to be solved on the efficient measure of generalized data eve-lopment analysis (DEA). Firstly, when the generalized DEA model is infeasible, the efficiency of the decision making unit cannot be expressed by detailed figures although it is efficient. Then, when decision making units are generalized DEA efficient, t...

With the introduction of proper partial order relation in the data envelopment analysis method based on the partial ordered set theory, the special relationships between different decision making units are established. However, with the increase of the number of index of input and output data, the relationships between different decision making uni...

With the introduction of proper partial order relation into the data envelopment analysis (DEA) method based on the partial ordered set theory, not only the relationships between different decision making units are established, but also some reasons which make the decision making units inefficient or weakly efficient are known. However, less inform...

The conventional data envelopment analysis (DEA) measures the relative efficiencies of a set of decision making units (DMUs) with exact values of inputs and outputs. In real-world problems, however, inputs and outputs typically have some levels of fuzziness. To analyze a DMU with fuzzy input/output data, previous studies provided the fuzzy DEA (FDE...

The reference system of the traditional data envelopment analysis (DEA) method is all the decision making units (DMUs), but reference systems of many practical problems have many forms, so using traditional DEA method to evaluate this kind of problems encounters difficulties, but generalized DEA method has certain advantages. For further perfecting...

In order to improve management level, optimize resource allocation and make more efficient management for Chinese commercial banks, we give an efficiency analysis for Chinese commercial banks. Because the traditional FGNZ decomposition model of Malmquist index has some defects, we use RD decomposition model of Malmquist index to calculate the total...

In this study, we analyze a data envelopment based research on the economic efficiency of primary industry in hohhot, baotou and ordos. The triangle Area of Hohhot, Baotou and Ordos leads the whole economic development in Inner Mongolia. The economic efficiency of primary industry of the county-level units in Hohhot. Baotou and Ordos is evaluated b...

As the data envelopment analysis (DEA) method has close connection with the poset theory, the introduction of proper partial order relation can further depict decision making units and provide a great help for a better understanding of them. With the introduction of new partial order relation into Charnes-Cooper-Rhoes (C2R) model, the special relat...

The conventional data envelopment analysis (DEA) measures the relative efficiencies of a set of decision making units with exact values of inputs and outputs. In real-world problems, however, inputs and outputs typically have some levels of fuzziness. To analyze a decision making unit (DMU) with fuzzy input/output data, previous studies provided th...

A correct and efficient software system is a basic precondition and important guarantee to realize the application of data envelopment analysis (DEA) method. It is an indispensable chain to connect the method and its applications. Therefore, the solving method and the calculation step of C2R model and BC2 model are presented. Then the design method...

Traditional DEA is an evaluation method based on the self-assessment system; the decision-makers cannot choose a frame of reference freely. In order to solve the DEA method can be based on both self-assessment system and any frame of reference for evaluation, the generalized output-oriented DEA model based on BC2 is given in this paper. Then throug...

It's more reliable on the decision-making units when the reference set is chosen by t raditional DEA cross-efficiency evaluation method, so decision-makers can’t select the proper reference system for evaluation. Therefore, we give a new cross-efficiency evaluation method based on sample units in this paper. Furthermore, we also propose a generaliz...

With the accelerating process of urbanization, it becomes an important task to improve the competitiveness of the city itself for social and economic development. City is a complex system which includes many subsystems. In this paper, we establish an index system of urban competitiveness from the following aspects: the strength of economic developm...

Evaluating the performance of activities or organizations by traditional data envelopment analysis model requires crisp input/output data. However, in real-world problems inputs and outputs are often with some fuzziness. To evaluate DMU with fuzzy input/output data, researchers provided fuzzy data envelopment analysis (FDEA) model and proposed rela...

Bohai Economic Zone is one of three major economic circles in China; it will reach 30% of the proportion of the country's total GDP until 2010, and plays an important role in China's economic development. But in recent years, its development shows a certain degree of fluctuate and non- equilibrium. So we apply the panel data DEA method to evaluate...

Data envelopment analysis (DEA) is an important method to evaluate the efficiency of the same kind of decision making units (DMUs). However, the DMUs may have multiple attributes in many cases, then it is hard to apply the traditional DEA method on such issue. In order to study the problem on the efficiency evaluation of multiattribute DMUs, a prod...

Electric field as a physical factor, its impact on organism has become an important research topic in biophysics. Trying to find the rule of electric field's impact on plant growth has the important meaning for carrying out the deep research of the influence of electric field on plants and for developing and utilizing the electric biological effect...

VANET is very important for improving traffic safety and efficiency. So the messages in VANET must be trustworthy and disseminated very fast. In this paper, an efficient and secure scheme is proposed for VANET messages authentication, group signature is used for the messages from private vehicles and identity-based signature for public vehicles and...

It is extremely important in a low-carbon economic society to evaluate the energy efficiency of regions correctly. Data envelopment analysis (DEA) is an important method of evaluating efficiency, but the method requires that decision-making units must have the same external environment. In order to measure the energy efficiency under different time...

The data in traditional DEA model are limited to crisp inputs and outputs, which cannot be precisely obtained in many production processes or social activities. At the same time, the traditional DEA model can not evaluate by using some given reference units. This paper attempts to extend the traditional DEA model and establishes a fuzzy DEA model b...

In the evaluation of the comprehensive effects of electric field on plant growth, it is very difficult to tell how importance on 1 milligram/liter of chlorophyll comparing with 1 centimeter of root length. In addition, even if these two indexes' weight can be determined, but when these two indexes are synthesized into an index, the individual infor...

Research on the aging property of the impact of high voltage electric field on crop seeds is the basis for that seeds are planted within the validity period. In this paper, we treat the wheat seeds with different high voltage electric field strength and then store for different time for the purpose of further studying the regularity of the impact o...

For evaluating the problems of reorganization efficiency of an enterprise group, an input-output efficiency analysis table of a group is provided by comparing with some reference samples, and some methods are given based on this table, such as how to analyzing the overall efficiency and find the inefficient reasons of a group, how to improve the gr...

Suppose that the reference set of evaluation can be grouped into the decision-making unit set (DMU Set) and non decision-making units set (non-DMU Set), then traditional DEA methods can only give the information which have relation to DMU Set but any non-DMU Set. In order to make DEA method have the ability to provide information by using DMU Set a...

On the basis of theory of data envelopment analysis, mathematical model and model signification for evaluating the influences of electric field on the biological effect were given. The method provides a new tool for researching the relationship between the biological effect and different electric field strengths. By means of these models the compre...

HS codes have been adopted by the majority of countries as being the basis for import and export inspection and the generation of trade statistics. Customs authorities and international traders need a HS code query tool to make their processing efficient and automatic. Since HS codes are identified at 5–7 levels of classification, then any intellig...

Harmonized system (HS) is a systematic directory to identify the product codes based on their categories for entry and exit inspection. The identified HS codes are used, by entry and exit authorities, to determine the applicable policies for product to be inspected. We have proposed a HS codes Web service to intelligently generate the HS codes for...

In accordance with alliance problem among similar unites in a system, we first give a nonparametric method and model for evaluating combination efficiency based on some sample units. Then we provides some properties of the model and a judgement method of combination efficiency. In order to give the meaning of combination efficiency, the relationshi...

Many properties of a lattice can be characterized by the existence of some kind of pentagons. In this paper, the relationship between semimodular lattices and modular lattices as well as distributive lattices is discussed, which is based on a special pentagon. A characterization theorem for semimodular lattices is given.

Data envelopment analysis (DEA) is an important method to evaluate the efficiency of economic development, the weights of traditional DEA model are with non-negative and no other restrains, it actually selects the optimal weight for decision-making unit to be evaluated, so the results may not accord to the objective reality. In this paper, the DEA...