Search results

1 – 10 of 20
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 1 September 2000

Liqun Cao, Xiaogang Deng and Shannon Barton

Applying Lundman’s organizational product thesis in explaining citizen complaints against police use of excessive physical force, the current study tests several hypotheses with a…

886

Abstract

Applying Lundman’s organizational product thesis in explaining citizen complaints against police use of excessive physical force, the current study tests several hypotheses with a national data set. Tobit regression analyses of the data show that Lundman’s thesis is partially supported. Both organizational behavior and organizational characteristics are important covariates of the complaint rate against police use of excessive physical force. Although generalization is limited, police departments need to actively recruit more mature persons into the police force, reinforce field training officer programs, and continually provide more in‐service training programs for its members if they are serious in reducing citizens’ complaints.

Details

Policing: An International Journal of Police Strategies & Management, vol. 23 no. 3
Type: Research Article
ISSN: 1363-951X

Keywords

Access Restricted. View access options
Article
Publication date: 13 June 2019

Arthur Piquet, Boubakr Zebiri, Abdellah Hadjadj and Mostafa Safdari Shadloo

This paper aims to present the development of a highly parallel finite-difference computational fluid dynamics code in generalized curvilinear coordinates system. The objectives…

289

Abstract

Purpose

This paper aims to present the development of a highly parallel finite-difference computational fluid dynamics code in generalized curvilinear coordinates system. The objectives are to handle internal and external flows in fairly complex geometries including shock waves, compressible turbulence and heat transfer.

Design/methodology/approach

The code is equipped with high-order discretization schemes to improve the computational accuracy of the solution algorithm. Besides, a new method to deal with the geometrical singularities, so-called domain decomposition method (DDM), is implemented. The DDM consists of using two different meshes communicating with each other, where the base mesh is Cartesian and the overlapped one a hollow cylinder.

Findings

The robustness of the present implemented code is appraised through several numerical test cases including a vortex advection, supersonic compressible flow over a cylinder, Poiseuille flow, turbulent channel and pipe flows. The results obtained here are in an excellent agreement when compared to the experimental data and the previous direct numerical simulation (DNS). As for the DDM strategy, it was successful as simulation time is clearly decreased and the connection between the two subdomains does not create spurious oscillations.

Originality/value

In sum, the developed solver was capable of solving, accurately and with high-precision, two- and three-dimensional compressible flows including fairly complex geometries. It is noted that the data provided by the DNS of supersonic pipe flows are not abundant in the literature and therefore will be available online for the community.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 30 no. 1
Type: Research Article
ISSN: 0961-5539

Keywords

Access Restricted. View access options
Article
Publication date: 30 April 2019

Yuanjie Zhi, Dongmei Fu, Tao Yang, Dawei Zhang, Xiaogang Li and Zibo Pei

This study aims to achieve long-term prediction on a specific monotonic data series of atmospheric corrosion rate vs time.

273

Abstract

Purpose

This study aims to achieve long-term prediction on a specific monotonic data series of atmospheric corrosion rate vs time.

Design/methodology/approach

This paper presents a new method, used to the collected corrosion data of carbon steel provided by the China Gateway to Corrosion and Protection, that combines non-linear gray Bernoulli model (NGBM(1,1) with genetic algorithm to attain the purpose of this study.

Findings

Results of the experiments showed that the present study’s method is more accurate than other algorithms. In particular, the mean absolute percentage error (MAPE) and the root mean square error (RMSE) of the proposed method in data sets are 9.15 per cent and 1.23 µm/a, respectively. Furthermore, this study illustrates that model parameter can be used to evaluate the similarity of curve tendency between two carbon steel data sets.

Originality/value

Corrosion data are part of a typical small-sample data set, and these also belong to a gray system because corrosion has a clear outcome and an uncertainly occurrence mechanism. In this work, a new gray forecast model was proposed to achieve the goal of long-term prediction of carbon steel in China.

Details

Anti-Corrosion Methods and Materials, vol. 66 no. 4
Type: Research Article
ISSN: 0003-5599

Keywords

Access Restricted. View access options
Book part
Publication date: 11 May 2010

Xiaogang Wu and Zhuoni Zhang

This chapter examines the trend in school enrollment and transitions to senior high school and to college in China for selected young cohorts since the 1990s, based on the…

Abstract

This chapter examines the trend in school enrollment and transitions to senior high school and to college in China for selected young cohorts since the 1990s, based on the analyses of the sample data from population censuses in 1990 and 2000 and the mini-census in 2005. We pay particular attention to educational inequality based on gender and the household registration system (hukou) in the context of educational expansion. Results show a substantial increase in educational opportunities over time at all levels. In particular, women have gained relatively more; gender inequality has decreased over time, and the gap in college enrollments was even reversed to favor women in 2005. However, rural–urban inequality was enlarged in the 1990s. The educational expansion has mainly benefited females and urban residents.

Details

Globalization, Changing Demographics, and Educational Challenges in East Asia
Type: Book
ISBN: 978-1-84950-977-0

Access Restricted. View access options
Article
Publication date: 16 October 2018

Xiwen Chen

Bottlenecked by rural underdevelopment, China’s overall development is bound to be inadequate and unbalanced. Through a brief retrospect of the reform directed against the…

636

Abstract

Purpose

Bottlenecked by rural underdevelopment, China’s overall development is bound to be inadequate and unbalanced. Through a brief retrospect of the reform directed against the “equalitarianism (egalitarianism)” in China’s rural areas, as well as the Chinese Government’s conceptual transformation and systemic construction and improvement thereof, the purpose of this paper is to clarify the panoramic significance of rural reform; the necessity, priority, and long-term nature of the current rural development; and the important role of public policy in doing so. It also looks ahead to consider the prospects for future rural reform.

Design/methodology/approach

This paper first reviews the rural reforms that were carried out in 1978. Second, it introduces the government’s conceptual change regarding rural reform and the establishment and improvement of the system that underlies it. Finally, the future of rural reform is envisaged.

Findings

The initial rural reforms brought extensive and profound changes to China’s rural areas. The experience of rural reform has been referred to and escalated by other fields of study. Hence, rural reforms have become something of global significance. Moreover, since the government can undertake reforms well beyond the reach of farmers, its views must be modified in a timely manner, and only then may it reasonably construct and improve the system pertaining to the “three rural issues (agriculture, rural areas, and farmers).”

Originality/value

This paper reviews the rural reforms carried out in 1978. It introduces the government’s change of concept with respect to rural reforms and the establishment and improvement of the system based on the “three rural issues,” thus looking forward to the future of rural reforms. The findings of this paper are of significance to the formulation of future agricultural policies.

Details

China Agricultural Economic Review, vol. 11 no. 3
Type: Research Article
ISSN: 1756-137X

Keywords

Access Restricted. View access options
Book part
Publication date: 2 September 2009

Thirty years of rapid development and economic change have created organizations and work relations in China that would have been unthinkable at the start of transition. In…

Abstract

Thirty years of rapid development and economic change have created organizations and work relations in China that would have been unthinkable at the start of transition. In December of 1978, the Chinese Communist Party agreed with Deng Xiaoping to allow agricultural privatization, a stark contrast to the communes of Mao Zedong's era. This change established the financial foundation that would lead to development in eastern, coastal cities and that would ultimately fuel an extraordinary transformation of China's economy and its global position. As a result, organizational structures have changed, and new organizational forms have emerged. There have also been dramatic changes in the way work organizations behave and in the nature and implications of work. This volume provides a glimpse into the state of organizations and work at the 30-year mark. The contributors are top scholars in the field, including many who have observed and studied China's transition for decades, who are drawing on some of the most up-to-date and innovative data sources available. The chapters are samples of the current work of these researchers that, taken together, provide a snapshot of the state of research on China's organizations and work behaviors as transition enters its fourth decade.

Details

Work and Organizationsin China Afterthirty Years of Transition
Type: Book
ISBN: 978-1-84855-730-7

Access Restricted. View access options
Article
Publication date: 11 October 2022

Da Huo and Yifan Wei

This paper seeks to answer two questions: (1) where do a country's entrepreneurship policies come from? (2) How do they evolve and shape entrepreneurial activities?

215

Abstract

Purpose

This paper seeks to answer two questions: (1) where do a country's entrepreneurship policies come from? (2) How do they evolve and shape entrepreneurial activities?

Design/methodology/approach

Drawing upon the comparative political economy literature and the institutional perspective, this paper proposes a theoretical model of the origin and evolution of entrepreneurship policies. We use China as a case study to apply the theoretical model and demonstrate the evolution of entrepreneurship policies in three stages during the period 1978 to 2012.

Findings

The case analysis of China provides evidence and support for our theoretical model and unpacks the process by which entrepreneurship policies originate and evolve as the result of the interplay among constantly changing policymaking, production, and knowledge regimes.

Research limitations/implications

Because of the research context, findings may lack generalisability. Additional studies on policymaking and production regimes of different kinds and their respective roles in shaping entrepreneurship policies are encouraged to further advance this line of research.

Practical implications

This paper offers important implications concerning entrepreneurship policy and activities for policymakers, practitioners and other stakeholders in emerging economies.

Originality/value

Our study fills a gap in the entrepreneurship literature by expanding scholarly understanding of the origin and evolution of entrepreneurship policies.

Details

Journal of Entrepreneurship and Public Policy, vol. 12 no. 1
Type: Research Article
ISSN: 2045-2101

Keywords

Available. Open Access. Open Access
Article
Publication date: 6 June 2023

Xiaogang Cao, Hui Wen and Bowei Cao

In this paper, the authors study the production and pricing decisions of a remanufacturing supply chain composed of a supplier, an assembler and a remanufacturer, in which the…

599

Abstract

Purpose

In this paper, the authors study the production and pricing decisions of a remanufacturing supply chain composed of a supplier, an assembler and a remanufacturer, in which the remanufacturing of components requires patent licensing from the supplier.

Design/methodology/approach

The authors consider three different models with government subsidy for remanufacturing: (1) no government subsidies; (2) the government subsidizes the remanufacturing behavior of the supplier and (3) the government subsidizes the remanufacturing behavior of the remanufacturer and use the Stackelberg game model to solve and analyze the equilibrium wholesale prices of components and the equilibrium outputs of new and remanufactured products under three subsidy modes.

Findings

The results show that the equilibrium wholesale prices of two kinds of components decrease with the unit patent licensing fee and the unit government subsidy, and the equilibrium quantity of the remanufactured products under the three modes is obviously higher than that of the new products.

Originality/value

Finally through numerical simulation, it is found that the equilibrium profits of the supplier, the manufacturer and the supply chain increase monotonously in relation to the unit government subsidy, while the optimal profit of the assembler in relation to the unit government subsidy tends to decrease first and then increase.

Details

Modern Supply Chain Research and Applications, vol. 5 no. 2
Type: Research Article
ISSN: 2631-3871

Keywords

Access Restricted. View access options
Article
Publication date: 29 March 2024

Bingbing Qi, Lijun Xu and Xiaogang Liu

The purpose of this paper is to exploit the multiple-Toeplitz matrices reconstruction method combined with quadratic spatial smoothing processing to improve the…

86

Abstract

Purpose

The purpose of this paper is to exploit the multiple-Toeplitz matrices reconstruction method combined with quadratic spatial smoothing processing to improve the direction-of-arrival (DOA) estimation performance of coherent signals at low signal-to-noise ratio (SNRs).

Design/methodology/approach

An improved multiple-Toeplitz matrices reconstruction method is proposed via quadratic spatial smoothing processing. Our proposed method takes advantage of the available information contained in the auto-covariance matrices of individual Toeplitz matrices and the cross-covariance matrices of different Toeplitz matrices, which results in a higher noise suppression ability.

Findings

Theoretical analysis and simulation results show that, compared with the existing Toeplitz matrix processing methods, the proposed method improves the DOA estimation performance in cases with a low SNR. Especially for the cases with a low SNR and small snapshot number as well as with closely spaced sources, the proposed method can achieve much better performance on estimation accuracy and resolution probability.

Research limitations/implications

The study investigates the possibility of reusing pre-existing designs for the DOA estimation of the coherent signals. The proposed technique enables achieve good estimation performance at low SNRs.

Practical implications

The paper includes implications for the DOA problem at low SNRs in communication systems.

Originality/value

The proposed method proved to be useful for the DOA estimation at low SNR.

Details

Engineering Computations, vol. 41 no. 2
Type: Research Article
ISSN: 0264-4401

Keywords

Access Restricted. View access options
Article
Publication date: 23 October 2023

Xiaogang Cao, Boning Xiao, Hui Wen and Mingzhe Fu

This paper explores how the existence of a second-hand market can affect remanufacturing decisions for durable goods in the presence of patent protection.

141

Abstract

Purpose

This paper explores how the existence of a second-hand market can affect remanufacturing decisions for durable goods in the presence of patent protection.

Design/methodology/approach

The authors construct a dynamic decision model between a durable goods original manufacturer and a durable goods remanufacturer considering the characteristics of the multi-cycle uses of new durable goods and remanufactured durable goods.

Findings

The results show that (1) the second-hand market compresses the cost space of a durable goods original manufacturer and a remanufacturer; (2) when the second-hand market exists, the optimal pricing of new durable goods is reduced, the optimal pricing of remanufactured durable goods is increased and the patent cost of each unit of durable goods increases and (3) the presence of the second-hand market will increase the original manufacturer's and remanufacturer's profits.

Originality/value

The research conclusion has certain reference value for the production strategy selection of each enterprise in the process of patented product remanufacturing and the government's fiscal policy formulation at each stage of the remanufacturing industry's development.

Details

Kybernetes, vol. 54 no. 1
Type: Research Article
ISSN: 0368-492X

Keywords

1 – 10 of 20
Per page
102050