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Expert briefing
Publication date: 2 November 2016

Bongo's victory was tarnished by widespread allegations of electoral fraud and subsequent human rights violations; both he and Ping have submitted evidence of abuses to…

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DOI: 10.1108/OXAN-DB214668

ISSN: 2633-304X

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Topical
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Article
Publication date: 12 June 2017

Ping He and Yangmin Li

The purpose of this paper is to investigate the analytical solution of a hyperbolic partial differential equation (PDE) and its application.

Abstract

Purpose

The purpose of this paper is to investigate the analytical solution of a hyperbolic partial differential equation (PDE) and its application.

Design/methodology/approach

The change of variables and the method of successive approximations are introduced. The Volterra transformation and boundary control scheme are adopted in the analysis of the reaction-diffusion system.

Findings

A detailed and complete calculation process of the analytical solution of hyperbolic PDE (1)-(3) is given. Based on the Volterra transformation, a reaction-diffusion system is controlled by boundary control.

Originality/value

The introduced approach is interesting for the solution of hyperbolic PDE and boundary control of the reaction-diffusion system.

Details

International Journal of Intelligent Computing and Cybernetics, vol. 10 no. 2
Type: Research Article
ISSN: 1756-378X

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Article
Publication date: 2 May 2017

Shanshan Zhang and Ping He

This paper aims to investigate the investment strategy of a two-sided platform on reducing transaction costs of two user sides and to study the pricing problem of the platform.

Abstract

Purpose

This paper aims to investigate the investment strategy of a two-sided platform on reducing transaction costs of two user sides and to study the pricing problem of the platform.

Design/methodology/approach

Mathematical derivation is used to compute the optimal decisions of a two-sided platform on pricing and investment. Numerical analysis is used to illustrate the findings.

Findings

It is found that the demand of one user side decreases in the maximal transaction costs reduction to this side but increases in the maximal transaction costs reduction to the other side. It is also found that a platform should never choose the investment in such a way that the maximal transaction costs reductions of two user sides are the same.

Research limitations/implications

Several limitations exist in this paper, most of which exist due to the assumptions. These limitations could be good research directions in the future. For example, only one platform’s decision is considered, and platforms’ competition is not taken into account. Considering other platforms’ competition, the decisions of the users and the platform would be different.

Originality/value

From the transaction costs perspective, this paper finds that a platform should never choose the investment in such a way that the maximal transaction costs reductions of two user sides are the same. This conclusion has not been found in previous literature.

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Kybernetes, vol. 46 no. 5
Type: Research Article
ISSN: 0368-492X

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Article
Publication date: 1 August 2016

Kaiying Cao and Ping He

By studying the competition between a B2C platform and a third-party seller, the purpose of this paper is to analyze and compare their optimal decisions and profits…

Abstract

Purpose

By studying the competition between a B2C platform and a third-party seller, the purpose of this paper is to analyze and compare their optimal decisions and profits between cases with and without sales effort of the platform or third-party seller.

Design/methodology/approach

This paper studies the competition between a B2C platform and a third-party seller. The platform sells a product directly, and allows the third-party seller to sell a competing product on the platform. Based on whether the platform or the third-party seller makes sales effort, there are four scenarios. The paper analyzes the optimal decisions and profits of platform and third-party seller under each scenario, respectively.

Findings

The transaction fee has a negative effect on third-party seller’s sales effort level. What is more, the platform can take a free riding from the third-party seller’s sales effort, but the platform’s sales effort has a negative effect on the profit of third-party seller.

Practical implications

These results provide managerial insights for the platform and the third-party seller to make decisions.

Originality/value

This paper is among the first papers to study the competition between B2C platform and third-party seller.

Details

Kybernetes, vol. 45 no. 7
Type: Research Article
ISSN: 0368-492X

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Article
Publication date: 8 January 2018

Yuxin Miao, Guofeng Pan, Caixuan Sun, Ping He, Guanlong Cao, Chao Luo, Li Zhang and Hongliang Li

The purpose of this paper is to study the effect of doping, annealing temperature and visible optical excitation on CuO-ZnO nanocomposites’ acetone sensing properties and…

Abstract

Purpose

The purpose of this paper is to study the effect of doping, annealing temperature and visible optical excitation on CuO-ZnO nanocomposites’ acetone sensing properties and introduce an attractive candidate for acetone detection at about room temperature.

Design/methodology/approach

ZnO nanoparticles doped with CuO were prepared by sol-gel method, and the structure and morphology were characterized via X-ray diffraction, scanning electron microscope, energy dispersive spectroscopy and Brunauer-Emmett-Teller. The photoelectric responses of CuO-ZnO nanocomposites to cetone under the irradiation of visible light were investigated at about 30°C. The photoelectric response mechanism was also discussed with the model of double Schottky.

Findings

The doping of CuO enhanced performance of ZnO nanoparticles in terms of the photoelectric responses and the gas response and selectivity to acetone of ZnO nanoparticles, in addition, decreasing the operating temperature to about 30ºC. The optimum performance was obtained by 4.17% CuO-ZnO nanocomposites. Even at the operating temperature, about 30ºC, the response to 1,000 ppm acetone was significantly increased to 579.24 under the visible light irradiation.

Practical implications

The sensor fabricated by 4.17% CuO-ZnO nanocomposites exhibited excellent acetone-sensing characteristics at about 30ºC. It is promising to be applied in low power and miniature acetone gas sensors.

Originality/value

In the present research, a new nanocomposite material of CuO-ZnO was prepared by Sol-gel method. The optimum gas sensing properties to acetone were obtained by 4.17% CuO-ZnO nanocomposites at about 30ºC operating temperature when it was irradiated by visible light with the wavelength more than 420 nm.

Details

Sensor Review, vol. 38 no. 3
Type: Research Article
ISSN: 0260-2288

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Article
Publication date: 19 June 2017

Xuehai Guo, Guofeng Pan, Xin Ma, Xiangzhou Li, Ping He, Zhongqiu Hua and Haiqing Li

The purpose of this research is to synthesize Al2O3-ZnO thick films, study the effect of doping and optical excitation on their sensing properties and introduce an…

Abstract

Purpose

The purpose of this research is to synthesize Al2O3-ZnO thick films, study the effect of doping and optical excitation on their sensing properties and introduce an attractive candidate for acetone detection in practice.

Design/methodology/approach

ZnO nanoparticles doped with Al2O3 were prepared by sol-gel method and characterized via X-ray diffraction and field-emission scanning electron microscopy. The sensing properties to acetone were investigated with an irradiation of UV. The sensing mechanism was also discussed with UV-Vis spectroscopy.

Findings

The doping of Al2O3 promoted the sensing response and stability of ZnO nanoparticles. The optimum performance was obtained by 4.96 Wt.% Al2O3-ZnO. The response to acetone (1,000 ppm) was significantly increased to 241.81, even just at an operating temperature of 64°C. It was also demonstrated that optical excitation with UV irradiation greatly enhanced the sensing response and the sensitivity can reach up to 305.14.

Practical implications

The sensor fabricated from 4.96 Wt.% Al2O3-ZnO exhibited excellent acetone-sensing characteristics. It is promising to be applied in low power and miniature acetone gas sensors.

Originality/value

In the present research, the optimum performance was obtained by 4.96 Wt.% Al2O3-ZnO at a low operating temperature of 64°C. The sensing properties were enhanced significantly with optical excitation, and the sensing mechanism was discussed with UV-Vis spectroscopy which has been reported rarely before.

Details

Sensor Review, vol. 37 no. 3
Type: Research Article
ISSN: 0260-2288

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Book part
Publication date: 12 September 2017

Yu-Ling Hsiao and Lucy E. Bailey

This chapter draws from a three-year ethnographic study focused on the educational and community interactions among working- and middle-class ethnic Chinese immigrants in…

Abstract

This chapter draws from a three-year ethnographic study focused on the educational and community interactions among working- and middle-class ethnic Chinese immigrants in a mid-western town in the United States. Aihwa Ong (1999) argues that “Chineseness” is a fluid, cultural practice manifested within the Chinese diaspora in particular ways that relate to globalization in late modernity, immigrants’ cultural background, their place in the social structure in their home society, and their new social class status in the context they enter. The study extends research focused on the complexities of social reproduction within larger global flows of Chinese immigrants. First, we describe how Chinese immigrants’ social status in their countries of origin in part shapes middle and working-class group’s access to cultural capital and positions in the social structure of their post-migration context. Second, we trace groups’ negotiation of their relational race and class positioning in the new context (Ong, 1999) that is often invisible in the processes of social reproduction. Third, we describe how both groups must negotiate national, community, and schooling conceptions of the model minority concept (Lee, 1996) that shapes Asian-American’s lived realities in the United States; yet the continuing salience of their immigrant experience, home culture, and access to cultural capital (Bourdieu, 2007) means that they enact the “model minority” concept differently. The findings suggest the complexity of Chinese immigrants’ accommodation of and resistance to normative ideologies and local structures that cumulatively contribute to social reproduction on the basis of class.

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The Power of Resistance
Type: Book
ISBN: 978-1-78350-462-6

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Article
Publication date: 1 June 2005

Li‐teh Sun

Man has been seeking an ideal existence for a very long time. In this existence, justice, love, and peace are no longer words, but actual experiences. How ever, with the…

Abstract

Man has been seeking an ideal existence for a very long time. In this existence, justice, love, and peace are no longer words, but actual experiences. How ever, with the American preemptive invasion and occupation of Afghanistan and Iraq and the subsequent prisoner abuse, such an existence seems to be farther and farther away from reality. The purpose of this work is to stop this dangerous trend by promoting justice, love, and peace through a change of the paradigm that is inconsistent with justice, love, and peace. The strong paradigm that created the strong nation like the U.S. and the strong man like George W. Bush have been the culprit, rather than the contributor, of the above three universal ideals. Thus, rather than justice, love, and peace, the strong paradigm resulted in in justice, hatred, and violence. In order to remove these three and related evils, what the world needs in the beginning of the third millenium is the weak paradigm. Through the acceptance of the latter paradigm, the golden mean or middle paradigm can be formulated, which is a synergy of the weak and the strong paradigm. In order to understand properly the meaning of these paradigms, however, some digression appears necessary.

Details

International Journal of Sociology and Social Policy, vol. 25 no. 6/7
Type: Research Article
ISSN: 0144-333X

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Book part
Publication date: 4 September 2020

Torrie Hester

The Department of Homeland Security (DHS) states in 2018 that safeguarding “civil liberties is critical” to their official duties. The Office for Civil Rights and Civil

Abstract

The Department of Homeland Security (DHS) states in 2018 that safeguarding “civil liberties is critical” to their official duties. The Office for Civil Rights and Civil Liberties within DHS, as its website explains,

reviews and assesses complaints from the public in areas such as: physical or other abuse; discrimination based on race, ethnicity, national origin, religion, gender, sexual orientation, or disability; inappropriate conditions of confinement; infringements of free speech; violation of right to due process … and any other civil rights or civil liberties violation related to a Department program or activity.

My chapter tracks the centrality of deportability in shaping the civil liberties and rights that DHS is tasked with enforcing. Over the course of the twentieth century, people on US soil saw an expanding list of civil liberties and civil rights. Important scholarship concentrates on the role of the courts, state and federal governments, advocacy groups, social movements, and foreign policy driving these constitutional and cultural changes. For instance, the scholarship illustrates that coming out of World War I, the US Supreme Court ruled that the First Amendment did not protect something the Justices labeled “irresponsible speech.” The Supreme Court soon changed course, opening up an era ever since of more robust First Amendment rights. What has not been undertaken in the literature is an examination of the relationship of deportability to the sweep of civil liberties and civil rights. Starting in the second decade of the twentieth century, federal immigration policymakers began multiplying types of immigration statuses. A century later, among many others, there is the H2A status for temporary low-wage workers, the H2B for skilled labor, and permanent residents with green cards. The deportability of each status constrains access to certain liberties and rights. Thus, in 2016, when people from the Office for Civil Rights and Civil Liberties within DHS act, they are not enforcing a uniform body of rights and liberties that applies equally to citizens and immigrants, or even within the large category of immigrants. Instead, they do so within a complicated matrix of liberties and rights attenuated by deportability, which has been shaped by the history of the twentieth century.

Details

Studies in Law, Politics, and Society
Type: Book
ISBN: 978-1-83982-297-1

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Article
Publication date: 5 January 2010

Ping He

The purpose of this paper is to make objective descriptions on various money‐laundering techniques and to put forward countermeasures in order to combat money laundering…

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Abstract

Purpose

The purpose of this paper is to make objective descriptions on various money‐laundering techniques and to put forward countermeasures in order to combat money laundering more effectively and efficiently.

Design/methodology/approach

This paper based on 20 simplified money‐laundering cases, describes various money‐laundering techniques, analyses the reasons why these methods prevail, and points out the future efforts to be made in the fight against money laundering.

Findings

As usual, the ways of money laundering include cash smuggling, making use of banks or insurance company, or making use of shell‐company or front‐company. Nowadays, criminals also turn to real estate, lottery, international trade, offshore company to launder money. Sometimes lawyers, accountants are exploited by money launderers. With the wide use of electronic money and internet, criminals prefer to launder money through non‐face to face transactions. The fight against money laundering is the fight between justice and evil. It is of great importance to pierce the secret veil of money laundering so that we can combat money laundering more effectively and efficiently.

Originality/value

This paper prevents a comprehensive description of, and comments on, various money‐laundering techniques and future efforts to be made in the fight against money laundering, which would be beneficial to policy makers, enforcement authorities, and judicial professionals.

Details

Journal of Money Laundering Control, vol. 13 no. 1
Type: Research Article
ISSN: 1368-5201

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