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Article
Publication date: 1 May 2019

Jinbo Wang, Naigang Cui and Changzhu Wei

This paper aims to develop a novel trajectory optimization algorithm which is capable of producing high accuracy optimal solution with superior computational efficiency…

Abstract

Purpose

This paper aims to develop a novel trajectory optimization algorithm which is capable of producing high accuracy optimal solution with superior computational efficiency for the hypersonic entry problem.

Design/methodology/approach

A two-stage trajectory optimization framework is constructed by combining a convex-optimization-based algorithm and the pseudospectral-nonlinear programming (NLP) method. With a warm-start strategy, the initial-guess-sensitive issue of the general NLP method is significantly alleviated, and an accurate optimal solution can be obtained rapidly. Specifically, a successive convexification algorithm is developed, and it serves as an initial trajectory generator in the first stage. This algorithm is initial-guess-insensitive and efficient. However, approximation error would be brought by the convexification procedure as the hypersonic entry problem is highly nonlinear. Then, the classic pseudospectral-NLP solver is adopted in the second stage to obtain an accurate solution. Provided with high-quality initial guesses, the NLP solver would converge efficiently.

Findings

Numerical experiments show that the overall computation time of the two-stage algorithm is much less than that of the single pseudospectral-NLP algorithm; meanwhile, the solution accuracy is satisfactory.

Practical implications

Due to its high computational efficiency and solution accuracy, the algorithm developed in this paper provides an option for rapid trajectory designing, and it has the potential to evolve into an online algorithm.

Originality/value

The paper provides a novel strategy for rapid hypersonic entry trajectory optimization applications.

Details

Aircraft Engineering and Aerospace Technology, vol. 91 no. 4
Type: Research Article
ISSN: 1748-8842

Keywords

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Article
Publication date: 16 October 2009

Wang Jinbo and Peng Shiguo

The purpose of this paper is to define the related concepts and theorems about the second moment process in stochastic analysis on time scales.

Abstract

Purpose

The purpose of this paper is to define the related concepts and theorems about the second moment process in stochastic analysis on time scales.

Design/methodology/approach

The study on stochastic analysis now includes two special conditions, namely discrete and continual conditions. However, in some cases, conditions are time scales, so that a new concept, namely stochastic analysis on time scales, is needed. Applying the time scales theory to the second moment process in stochastic analysis, related concept foundation of stochastic analysis on time scales has been established.

Findings

The need for the theory about stochastic analysis on time scales is recognized.

Practical implications

This is a very useful theory in related fields in future.

Originality/value

Stochastic analysis on time scales expand applying fields of stochastic analysis, and will be helpful to related fields.

Details

Kybernetes, vol. 38 no. 10
Type: Research Article
ISSN: 0368-492X

Keywords

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Case study
Publication date: 17 October 2012

Ramakrishna Velamuri, Yuan Ding and Jianhua Zhu

Entrepreneurship.

Abstract

Subject area

Entrepreneurship.

Study level/applicability

This case is suitable for MBA, EMBA and advanced undergraduate students.

Case overview

Noah Wealth Management was founded by Ms Wang Jingbo, a lady in her mid 30s with a team of less than 20 members in 2005. Exploiting market opportunities offered by a lack of good wealth management products and services, Noah grew rapidly from one branch office in 2005 to 59 branch offices in 2011, reaching a staff size of 1,031. Noah listed its shares on the New York Stock Exchange in November 2010. In 2011, Noah was ranked No. 38 among the 100 Top Potential Enterprises in China. Nonetheless, Noah faced several problems of internal management during the course of its fast expansion. In the first quarter financial report of 2012, Noah suffered a 52.6 percent decrease in net income over the corresponding period in 2011. Faced with a rapidly declining share price, Noah announced on May 22, 2012 a US $30 million share repurchase program.

Expected learning outcomes

The case supports a basic lesson on the entrepreneurial cycle, including assessing a business opportunity, resource mobilization, identifying a business model, growth of the venture, listing on the stock market, and subsequent growth challenges. Students can learn about some of the typical dilemmas faced by founders of entrepreneurial ventures, including how to maintain the corporate culture while growing fast and how to prevent members of the founding team from becoming bottlenecks to the development of the organization. The case can also provide management students with an overview of China's wealth management industry.

Supplementary materials

Teaching notes are available for educators only. Please contact your library to gain login details or email support@emeraldinsight.com to request teaching notes.

Details

Emerald Emerging Markets Case Studies, vol. 2 no. 8
Type: Case Study
ISSN: 2045-0621

Keywords

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Book part
Publication date: 24 November 2016

Bipin Kumar

The main purpose of this chapter is to explore the role BRICS countries have played in the formation of regional (free) trade agreements. The present chapter tries to…

Abstract

Purpose

The main purpose of this chapter is to explore the role BRICS countries have played in the formation of regional (free) trade agreements. The present chapter tries to understand and document recent developments and directions taken by the BRICS countries either individually or in aligning with each other at the regional and mega-regional levels.

Methodology/approach

The chapter is largely empirical and descriptive to analyse the recent RTAs policies of the BRICS countries.

Findings

This chapter provides in particular as assessment of the impact on BRICS countries of the three recent Mega-RTAs; that is TPP, TPIP and RCEP. For this purpose, an attempt had been made to find out the commonalties and divergences in the RTAs policies of the BRICS countries.

Design

The chapter is divided into six sections. After a brief introduction, the second section deals with the reasons for countries entering into RTAs. The third section documents the directions of the current negotiations on Mega-RTAs and its (potential) geographical implications for the BRICS countries. The fourth and the fifth sections deal with the current status of these RTAs and their noticeable impact on the response of the BRICS countries. The final section concludes the research with suggestions and recommendations.

Originality/value

RTAs and Mega-RTAs frameworks have been useful for BRICS countries. This recent development in trade negotiations can be regarded as promising for them.

Details

The Challenge of Bric Multinationals
Type: Book
ISBN: 978-1-78635-350-4

Keywords

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Article
Publication date: 5 June 2017

Sheng Huang, Guangyu Ye, Jinbo Zhou and Tiantian Jin

This paper aims to reveal the influencing mechanism of the interaction between institutional environments in the home and host country on the accelerated…

Abstract

Purpose

This paper aims to reveal the influencing mechanism of the interaction between institutional environments in the home and host country on the accelerated internationalization of entrepreneurial enterprises from emerging economies (EE). The authors want to open the black box of home-country institutional environments’ moderating mechanism on the relationship between host-country institutional environments and accelerated internationalization.

Design/methodology/approach

The authors chose a massive interview method and case study method to answer this question. According to our standards, the authors chose four high-tech companies in Guangdong and Guangxi provinces as case study samples. During investigation in the four case companies, the authors collected print data of 150 pages and electric data of 3 pages. Then, the authors excavated concepts in data through open coding, axial coding and select-type coding and identified concepts’ dimensions and connections between them.

Findings

Well-developed home-country institutions can reduce the inhibitory effect of under-developed host-country institutions on the accelerated internationalization of entrepreneurial enterprises from emerging economies. Under-developed institutional environments in the home country are beneficial for entrepreneurial enterprises from EE to develop the institutional capability for entrepreneurial enterprises with stronger institutional capability from emerging economies. The inhibitory effect of under-developed institutional environments in the host country on their accelerated internationalization is weaker. The positive moderating role played by institutional voids in the home country on the relationship between institutional voids in the host country and the accelerated internationalization are mediated by the institutional capability of entrepreneurial enterprises from emerging economies.

Research limitations/implications

The authors just refined the definition of institutional capability and divided its dimensions. Issues such as operationalization of institutional capability and the development of measurement scale are also worthy for future quantitative research. Considering the inherent defect of case study and that these four case companies are from Chinese high-tech industry, the external validity our research may be limited. The theoretical model that was constructed generally captured the relationships between dual institutional environments, institutional capability and EE entrepreneurial firms’ accelerated internationalization decision. Future studies may use a large-scale sample to verify the all propositions the authors introduced to draw more steady and reliable empirical study results.

Practical implications

The conclusions have significant implications for governments in EE to construct friendly institutional environments for international entrepreneurship and for entrepreneurial firms to implement internationalization strategies.

Social implications

Policy makers should establish well-developed normative and cognitive institutional environment by cultivating global-orientated and open national culture and organizing experience exchange conference, thereby speeding up the implementation of internationalization strategies and further improving international competitiveness for a country.

Originality/value

First, the authors defined institutional capability as firms’ ability of establishing relationships with institution actors, adapting to institutional contexts, changing existing institutions or creating new ones to gain potential interests and suggested that it consists of three dimensions. Second, institutional voids in the home country positively moderate the relationship between under-developed institutional environments in the host country and the accelerated internationalization of entrepreneurial firms from EE. At last, institutional capability of firms negatively moderates the relationship between under-developed institutional environments in the host country and the accelerated internationalization of entrepreneurial firms from EE.

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Article
Publication date: 1 July 2014

Guixia Wang, Jinbo Wan and Lanxiang Zhao

The purpose of this paper is to present a structural evaluation methodology to link key performance indicators (KPIs) into the strategy map of the balance scorecard (BSC…

Abstract

Purpose

The purpose of this paper is to present a structural evaluation methodology to link key performance indicators (KPIs) into the strategy map of the balance scorecard (BSC) for Chinese science parks (CSPs). We establish the visualized strategy map with the logical links to improve the science parks’ (SPs’) performance.

Design/methodology/approach

Corresponding to the four BSC perspectives (finance, customer, internal process and employee learning and growth), KPIs for CSPs are synthesized and screened in the relevant literature. The application for Zhongguancun Science Park (ZSP) is provided as an example.

Findings

The research results show that the presented approach is an objective and feasible way to construct a more justifiable strategy map. The proposed framework can be applied to non-profit organizations, such as SPs.

Originality/value

This work provides a systematic method to establish strategy maps for SPs (non-profit organizations), based on the consideration of the intricate causal relationships among KPIs, and the analysis of the important strategic improvement paths and proposes the model of assessment of emphasizing the processes rather than outcomes.

Details

Journal of Science and Technology Policy Management, vol. 5 no. 2
Type: Research Article
ISSN: 2053-4620

Keywords

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Article
Publication date: 28 October 2020

Danrong Song, Jinbo Song, Hehui Yuan and Yu Fan

With the growing demand for infrastructure and public services in recent years, PPP-UP have attracted a great deal of attention. However, while the user focuses on the…

Abstract

Purpose

With the growing demand for infrastructure and public services in recent years, PPP-UP have attracted a great deal of attention. However, while the user focuses on the payment for use and the private sector is concerned with its return on investment, the public sector pays more attention to the efficient utilization of public funds. In order to analyze the willingness of each stakeholder to join PPP-UP, an evolutionary game model involving the three parties is constructed.

Design/methodology/approach

An evolutionary game model is established that considers the users and the public and private sectors in user-pay public-private-partnership projects (PPP-UP). Eight scenarios of equilibriums and the game's evolutionary stable strategies are analyzed, and the corresponding stability conditions are then obtained. A situation where all three players are willing to cooperate in theory is also examined. The key influencing parameters that affect cooperation behaviors are further discussed.

Findings

First, the results illustrate that by properly adjusting the influencing factors, the cooperation status among the three parties can be changed along with certain evolutionary trends. Second, it is hard to modify unsatisfactory evolutionary stability by small changes in both the price compensation of and the construction and operation compensation. Third, it is necessary to involve the users in the decision-making process in PPP-UP and take their demands regarding benefits and payments into account.

Originality/value

In this paper, we focus on PPP-UP to research interactions among the public and private sectors and the users. Based on the analysis of the evolutionary game, to facilitate the successful implementation and development of a project, several conditions are needed to ensure tripartite cooperation. Several recommendations are then proposed for decision-makers in PPP-UP.

Details

Engineering, Construction and Architectural Management, vol. 28 no. 7
Type: Research Article
ISSN: 0969-9988

Keywords

Content available
Article
Publication date: 29 October 2018

Xiongfeng Pan, Xianyou Pan, Changyu Li, Jinbo Song and Jing Zhang

The purpose of this paper is to analyze the effect of environmental policy China’s national program to address climate change on carbon emission efficiency.

Abstract

Purpose

The purpose of this paper is to analyze the effect of environmental policy China’s national program to address climate change on carbon emission efficiency.

Design

Based on the directional distance function, the provincial total factor carbon emission efficiency was measured. Then, the authors analyzed the effect of environmental policy on carbon emission efficiency based on a difference in difference model.

Finding

Carbon emission efficiency has been significantly improved since the environmental policy China’s national program to address climate change was put forwarded, but the positive impact in different periods and regions is different. In addition, the environmental policy improves the carbon emission efficiency through the reduction of energy intensity and adjustment of the industrial structure.

Originality/value

This is the first time to use difference in difference model to use a difference in difference model to quantitatively assess the influence of environmental policy China’s national program to address climate change on carbon emission efficiency.

Details

International Journal of Climate Change Strategies and Management, vol. 11 no. 3
Type: Research Article
ISSN: 1756-8692

Keywords

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Article
Publication date: 15 August 2016

Jean Slutsky, Emma Tumilty, Catherine Max, Lanting Lu, Sripen Tantivess, Renata Curi Hauegen, Jennifer A Whitty, Albert Weale, Steven D Pearson, Aviva Tugendhaft, Hufeng Wang, Sophie Staniszewska, Krisantha Weerasuriya, Jeonghoon Ahn and Leonardo Cubillos

The paper summarizes data from 12 countries, chosen to exhibit wide variation, on the role and place of public participation in the setting of priorities. The purpose of…

Abstract

Purpose

The paper summarizes data from 12 countries, chosen to exhibit wide variation, on the role and place of public participation in the setting of priorities. The purpose of this paper is to exhibit cross-national patterns in respect of public participation, linking those differences to institutional features of the countries concerned.

Design/methodology/approach

The approach is an example of case-orientated qualitative assessment of participation practices. It derives its data from the presentation of country case studies by experts on each system. The country cases are located within the historical development of democracy in each country.

Findings

Patterns of participation are widely variable. Participation that is effective through routinized institutional processes appears to be inversely related to contestatory participation that uses political mobilization to challenge the legitimacy of the priority setting process. No system has resolved the conceptual ambiguities that are implicit in the idea of public participation.

Originality/value

The paper draws on a unique collection of country case studies in participatory practice in prioritization, supplementing existing published sources. In showing that contestatory participation plays an important role in a sub-set of these countries it makes an important contribution to the field because it broadens the debate about public participation in priority setting beyond the use of minipublics and the observation of public representatives on decision-making bodies.

Details

Journal of Health Organization and Management, vol. 30 no. 5
Type: Research Article
ISSN: 1477-7266

Keywords

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