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A Framework of the Carbon-Neutral Auditing for Enterprises in China  [PDF]
Wei Zhang
American Journal of Industrial and Business Management (AJIBM) , 2013, DOI: 10.4236/ajibm.2013.33032
Abstract:

This paper focuses on the framework of carbon-neutral auditing in China, and builds three modes to clarify the carbon neutral auditing in different circumstances which include individual enterprise, enterprises in a supply chain and enterprises in an eco-industry park meeting with the concept of circular economy. At the same time, it clarified the possible applications of carbon-neutral reports.

Extraction of Energy Resources—Exploitation of the Canadian Oil Sands  [PDF]
Wei Zhang
Natural Resources (NR) , 2014, DOI: 10.4236/nr.2014.59046
Abstract:
Considerable reserves of oil sands are located in northernAlberta. Exploitation of these reserves has been instrumental in the development of theAlbertaeconomy. Mining and processing techniques, including “in situ” processing and surface mining/aqueous treatment, are presented. Oil assisted flotation and solvent extraction are discussed as possible future processing alternatives. Subsequent froth treatment and refining methods are described. The rapid expansion of bitumen processing in theFort McMurrayarea has drastically affectedAlberta’s economic, political and social policy. Corresponding strain has been placed on the regional ecosystem. A comparison between wind and bitumen as sources of energy is offered.
Weighing the Pros and Cons: Transformation of Angle of View for Three Gorges Dam  [PDF]
Wei Zhang
Natural Resources (NR) , 2014, DOI: 10.4236/nr.2014.516088
Abstract: Three Gorges Dam Project is the world’s largest water-control and hydraulic-electric project in the 21st century. However, it has been shrouded in controversy since long even before it began construction in 1994. On one hand, the benefits of the Three Gorges Dam are flood control, power generation, navigation, aquaculture, tourism, ecological protection, environmental purification, development-oriented resettlement, transfer of water from southern China to northern China, and water supply and irrigation. On the other hand, the drawbacks of the dam are environmental impact, effect on local culture and aesthetic values, and sedimentation. In an environmental impact point of view, the Three Gorges Dam shows evidence that it has more advantages than disadvantages. Thus, by carefully balancing the pros and cons, one can say that the Three Gorges Dam is an environmentally feasible project.
A Theoretical Framework of Social Responsibility-Internal Control in Chinese Companies  [PDF]
Wei Zhang
American Journal of Industrial and Business Management (AJIBM) , 2015, DOI: 10.4236/ajibm.2015.59057
Abstract: A perfect social responsibility (SR) internal control system is the basis for a company to sustain its long-term development. An integrated framework of SR internal control could be built in three divisions: one is the five key elements of internal control, the other is the major context of SR according to ISO26000: 2010 and “Internal Control Supporting Guidelines”, and another is the performing levels which can be categorized as the strategic management level and the operation activities level. A detail analysis of this integrated SR internal control framework was made and suggestions for improving the current SR performing effect were provided.
Multiband Monopole Antenna with Sector-Nested Fractal  [PDF]
Jie Zhang, Wei Zhang
Wireless Engineering and Technology (WET) , 2015, DOI: 10.4236/wet.2015.63005
Abstract: A kind of novel multi-frequency monopole antenna with sector-nested fractal is proposed and designed, which is nested with a series of similar circular sector elements. By means of the trapeziform ground plane with the tapered CPW (coplanar waveguide) feeder in the middle, the antenna’s radiation performance is greatly improved. The antennas can synchronously operate in three frequencies, covering the working frequency bands of WLAN/WiMAX, 2.44 GHz/3.5 GHz/5.2 GHz - 5.8 GHz. The pattern and impedance measurements of antenna show a good performance over the WLAN/WiMAX band; it possesses a near omni-directional characteristic and good radiation efficiency. Moreover, the antenna is miniature and its design idea can be easily applied into other types of nested structure, the features of which make the proposed antenna have a promising application in other fields.
Regional Economic Geography with Externalities, Congestion, and Fiscal Policies in a Small-Open Growth Economy  [PDF]
Wei-Bin Zhang
Journal of Geographic Information System (JGIS) , 2010, DOI: 10.4236/jgis.2010.24028
Abstract: This paper develops a two-regional growth model with amenity, capital accumulation and regional public goods with public goods and fiscal policies. The economy consists of two regions and each region consists of the industrial sector and public sector. The industrial sector provides goods in perfectly competitive markets. The public sector, which is financed by the regional government’s tax incomes, supplies regional public goods. The public goods affect both firms and households. We show how to find equilibrium values of the dynamic system and simulate model. Then, we carry out comparative statics analysis with regard to parameter changes in tax rates, congestion and amenity. Our comparative statics analysis provides some important insights. For instance, a main difference between the effects of increasing the two regions’ tax rates on the output is that as the technologically advanced region’s (the other region’s) tax rate on the industrial sector is increased, the national industrial output, national capital employed by the economy, and the national wealth are increased (reduced). In the region which increases the tax rate, the wage rate, consumption and wealth per capita, output per labor force, the population, and land rent are increased, and the corresponding variables in the other region are reduced.
National and Regional Economic Growth with Fiscal Policies: Congested Public Goods and Endogenous Labor Supply of a Small-Open Economy  [PDF]
Wei-Bin Zhang
Modern Economy (ME) , 2010, DOI: 10.4236/me.2010.13020
Abstract: The purpose of this study is to build a two-regional growth model with capital accumulation, endogenous time distribution between leisure and labor, and regional public goods with fiscal policies. We emphasize dynamic interactions among capital accumulation, externalities, supply of public good with different fiscal policies, congestion of public good, endogenous time, and economic geography. The economy consists of two regions and each region consists of the industrial sector and public sector. First, we develop the two-region growth model with public goods and fiscal policies. Second, we show how to find equilibrium values of the dynamic system. Then, we simulate model with specified parameter values. Finally, we carry out comparative statics analysis with regard to parameter changes in tax rates and congestion. Our comparative statics analysis provides some important insights. For instance, a main difference between the effects of increasing the two regions’ tax rates on the output is that as region 1’s (2’s) tax rate on the industrial sector is increased, the national industrial output, national capital employed by the economy, and the national wealth are increased (reduced).
Fracture and Damage Behaviors of Concrete in the Fractal Space  [PDF]
Heng Zhang, Demin Wei
Journal of Modern Physics (JMP) , 2010, DOI: 10.4236/jmp.2010.11006
Abstract: The fracture toughness, the driving force and the fracture energy for an infinite plate with a fractal crack are investigated in the fractal space in this work. The perimeter-area relation is adopted to derive the transforma-tion rule between damage variables in the fractal space and Euclidean space. A plasticity yield criterion is introduced and a damage variable tensor is decomposed into tensile and compressive components to describe the distinct behaviors in tension and compression. A plastic damage constitutive model for concrete in the Euclidean space is developed and generalized to fractal case according to the transformation rule of damage variables. Numerical calculations of the present model with and without fractal are conducted and compared with experimental data to verify the efficiency of this model and show the necessity of considering the fractal effect in the constitutive model of concrete. The structural response and mesh sensitivity of a notched unre-inforced concrete beam under 3-point bending test are theoretical studied and show good agreement with the experimental data.
Projection Pursuit Flood Disaster Classification Assessment Method Based on Multi-Swarm Cooperative Particle Swarm Optimization  [PDF]
Wei Huang, XingNan Zhang
Journal of Water Resource and Protection (JWARP) , 2011, DOI: 10.4236/jwarp.2011.36051
Abstract: The indicators of flood damage assessment in the flood classification are often incompatible, and it is very difficult to use those indicators value directly for classification assessment. Projection pursuit technology can project higher dimensional incompatible data into lower dimensional sub-space, and find the projection values for optimal projection index function to get the higher dimensional data structure features, which has been improved to be reasonable and effective for flood disaster classification assessment. However, it is a bit difficult to optimize the parameters of projection index functions, as a result, that limits the applications of this method. As an emerging heuristic global optimization algorithm based on swarm intelligence, particle swarm optimization algorithm has the ability of solving complex optimization problem, but it still be easily convergent early, and can not search the global optimal solution. In this paper, a flood disaster classification assessment method based on multi-swarm cooperative particle swarm optimization is proposed, which adopts a tri-parameter Logistic curve to construct the flood disaster projection pursuit model, and uses mul-ti-swarm system particle swarm optimization method to optimize the parameters of the projection index functions. The typical test function experiment shows that this optimization method can solve the early convergence commonly found in standard particle swarm optimization algorithm, which global optimized ability is improved greatly. Applied in flood disaster assessment in HeNan Province, the results using this method comparing with others indicates that it can assess effectively the flood disaster, and has better assessment accuracy and disaster resolution.
Environmental Policy and Pollution Dynamics in an Economic Growth Model  [PDF]
Wei-Bin Zhang
Modern Economy (ME) , 2011, DOI: 10.4236/me.2011.24071
Abstract: The purpose of this paper is to study dynamic interactions among capital accumulation, environmental change and labor distribution. We try to synthesize the growth mechanism in the neoclassical growth theory and the environmental dynamics in traditional models of environmental economics within a comprehensive framework with an alternative approach to household behavior. We build a model which describes a dynamic interdependence among physical accumulation, environmental change and division of labor under perfect competition with environmental taxes on production, wealth income, wage income and consumption. We simulate the model to demonstrate existence of equilibrium points and motion of the dynamic system. The simulation demonstrates some dynamics which can be predicted neither by the neoclassical growth theory Solow model nor by the traditional economic models of environmental change.
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