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Urban Governance and Smart City Planning
Type: Book
ISBN: 978-1-83982-104-2

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Book part

Soon-Ho Kim, Min-Seong Kim and Dong Hun Lee

Coffee shops are becoming more aware that brand loyalty can be an effective strategy for securing a competitive edge in business. To supplement current understanding of…

Abstract

Coffee shops are becoming more aware that brand loyalty can be an effective strategy for securing a competitive edge in business. To supplement current understanding of the importance of coffee shop branding, this study investigates the role of personality traits and congruity in the formation of brand loyalty. This study finds that personality traits have direct effects on congruity and customer satisfaction, the two defining factors of brand loyalty. Overall, our results suggest that the interaction of personality traits, congruity, and satisfaction is essential to the process of influencing coffee shop customers’ brand loyalty.

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Advances in Hospitality and Leisure
Type: Book
ISBN: 978-1-78635-615-4

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Article

George Stylios

Discusses the 6th ITCRR, its breadth of textile and clothing research activity, plus the encouragement given to workers in this field and its related areas. States that…

Abstract

Discusses the 6th ITCRR, its breadth of textile and clothing research activity, plus the encouragement given to workers in this field and its related areas. States that, within the newer research areas under the microscope of the community involved, technical textiles focuses on new, ‘smart’ garments and the initiatives in this field in both the UK and the international community at large. Covers this subject at length.

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International Journal of Clothing Science and Technology, vol. 13 no. 6
Type: Research Article
ISSN: 0955-6222

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Case study

James Shein and Loredana Yamada

Sara Lee Corporation's acquisition binge in the 1980s and 1990s left the company with a portfolio of vastly different businesses operating independently of one another. It…

Abstract

Sara Lee Corporation's acquisition binge in the 1980s and 1990s left the company with a portfolio of vastly different businesses operating independently of one another. It had experienced rapid top-line growth, but at the same time cash flows had declined. Sara Lee ignored both internal and external warning signs until a major transformation plan became necessary. This case examines the company's multiple turnaround attempts. The learning objective of the case is to analyze “early stage” turnaround efforts by examining how the company found itself in decline, evaluating its attempts to improve its performance, and assessing the turnaround plan.

(1) Learn to identify a specific challenging moment when reading and analyzing a turnaround plan; (2) address the implementation problems of an early stage turnaround and discuss exit options; (3) evaluate when a change of long-held beliefs and decades-long strategy by a company is warranted; (4) evaluate Sara Lee's marketing strategies in light of the disappointed retail and wholesale customers; and (5) show the similarities in traits between turnaround managers and high-growth entrepreneurs.

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Kellogg School of Management Cases, vol. no.
Type: Case Study
ISSN: 2474-6568
Published by: Kellogg School of Management

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Article

Jon S.T. Quah

The purpose of this paper is to explain why Singapore is a success story today despite the fact that its prospects for survival were dim when it became independent in August 1965.

Abstract

Purpose

The purpose of this paper is to explain why Singapore is a success story today despite the fact that its prospects for survival were dim when it became independent in August 1965.

Design/methodology/approach

This paper describes the changes in Singapore’s policy context from 1959 to 2016, analyses the five factors responsible for its success and concludes with advice for policy makers interested in implementing Singapore-style reforms to solve similar problems in their countries.

Findings

Singapore’s success can be attributed to these five factors: the pragmatic leadership of the late Lee Kuan Yew and his successors; an effective public bureaucracy; effective control of corruption; reliance on the “best and brightest” citizens through investment in education and competitive compensation; and learning from other countries.

Originality/value

This paper will be useful to those scholars and policy makers interested in learning from Singapore’s success in solving its problems.

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Public Administration and Policy, vol. 21 no. 1
Type: Research Article
ISSN: 1727-2645

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Article

J. PAUL JOSHI and LARRY SWERTLOFF

The advent of derivatives and structured products has coincided with a proliferation of fixed income models used to analyze hedging, pricing, forecasting, and estimation…

Abstract

The advent of derivatives and structured products has coincided with a proliferation of fixed income models used to analyze hedging, pricing, forecasting, and estimation for the term structure of interest rates. This article evaluates five models Ho‐Lee (HL); Black‐Derman‐Toy (BDT); Vasicek; Cox‐Ingersoll‐Ross (CIR); and Heath‐Jarrow‐Morton (HJM) (see Exhibit 1) that are currently used by structured finance practitioners. We suggest which models are most appropriate for assets with different time horizons, interest rate sensitivities and cashflow properties. The authors link model selection to structured financial instruments with the singular focus on the trade‐off between model precision/complexity and calculation costs.

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The Journal of Risk Finance, vol. 1 no. 1
Type: Research Article
ISSN: 1526-5943

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Book part

Nana Yaa A. Gyamfi and Yih-teen Lee

Answering to calls for further contextualizing global leadership, this study investigates power dynamics and cultural identities in global leadership in an African…

Abstract

Answering to calls for further contextualizing global leadership, this study investigates power dynamics and cultural identities in global leadership in an African context. We took a grounded theory approach to investigate how a specific cultural context shapes assets and liabilities of global leaders. Drawing on our data comprising semi-structured interviews of managers of multinational enterprises operating in Ghana, we identified key assets and liabilities for being local or foreign in one’s global leadership role. Furthermore, we theorize four specific styles of leadership leveraging: identity leveraging, power leveraging, juxtapositional leveraging, and temporal leveraging. Finally, we integrated the above-mentioned elements and proposed a framework of contextualized assets and liabilities which illustrates how specific cultural context affects the assets and liabilities of localness and foreignness for global leaders, and how these assets and liabilities constitute the four styles of leveraging in such context. Implications of our findings for research and practice are discussed.

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Article

T.S. Lee

Mixed recirculatory flow in the annuli of stationary and rotatinghorizontal cylinders were studied numerically. A set of distorted‘false transient’ parameters were…

Abstract

Mixed recirculatory flow in the annuli of stationary and rotating horizontal cylinders were studied numerically. A set of distorted ‘false transient’ parameters were introduced to speed up the steady state solution of the unsteady vorticity, energy and stream function—vorticity equations. The inner cylinder of the annuli is assumed heated and rotating at Reynolds numbers that exclude the effects of centrifugal acceleration and three‐dimensional Taylor vortices. The Prandtl number considered is in the range of 0.01 to 1.0 and Rayleigh number in the range of 102 to 106. Radius ratios of the cylinders considered are 1.25, 2.5 and 5.0. For a radius ratio of 2.5, inner cylinder rotation in the Reynolds number range of 0 to 1120 was considered. Vertical eccentricities in the range of ±2/3 were studied for cases of the rotating inner cylinder. Numerical experiments show that the mean Nusselt number increases with Rayleigh number for both cases of concentric and eccentric stationary inner cylinder. At a Prandtl number of order 1.0 with a fixed Rayleigh number, when the inner cylinder is made to rotate, the mean Nusselt number decreases throughout the flow. At lower Prandtl number of the order 0.1 to 0.01, the mean Nusselt number remained fairly constant with respect to the rotational Reynolds number.

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International Journal of Numerical Methods for Heat & Fluid Flow, vol. 4 no. 6
Type: Research Article
ISSN: 0961-5539

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Article

Zhiyong Zeng, Xiaoliang Jin and Rongxiang Zhao

The model for digitally controlled three-phase pulse width modulation (PWM) boost rectifiers is a sampled data model, which is different from the continuous time domain…

Abstract

Purpose

The model for digitally controlled three-phase pulse width modulation (PWM) boost rectifiers is a sampled data model, which is different from the continuous time domain models presented in previous studies. The controller, which is tuned according to the model in continuous time domain and discretized by approximation methods, may exhibit some unpredictable performances and even result in unstable systems under some extreme situations. Consequently, a small-signal discrete-time model of digitally controlled three-phase PWM boost rectifier is required. The purpose of this paper is to provide a simple but accurate small-signal discrete-time model of digital controlled three-phase PWM boost rectifier, which explains the effect of the sampling period, modulator and time delays on system dynamic and improves the control performance.

Design/methodology/approach

Based on the Laplace domain analysis and the waveforms of up-down-count modulator, the small signal model of digital pulse width modulation (DPWM) in the Laplace domain is presented. With a combination of state-space average and a discrete-time modeling technique, a simplified large signal discrete time model is developed. With rotation transformation and feed-forward decoupling, the large-signal model is decoupled into a single input single output system with rotation transformation. Then, an integrated small signal model in the Laplace domain is constructed that included the time delay and modulation effect. Implementing the modified z-transform, a small-signal discrete-time model is derived from the integrated small signal model.

Findings

In a digital control system, besides the circuit parameters, the location of pole of open-loop transfer function is also related to system sampling time, affecting the system stability, and the time delay determines the location of the zero of open-loop transfer function, affecting the system dynamic. In addition to the circuit parameters discussed in previous literature, the right half plane (RHP) zero is also determined by the sampling period and the time delay. Furthermore, the corner frequency of the RHP zero is mainly determined by the sampling period.

Originality/value

The model developed in this paper, accounting for the effect of the sampling period, modulator and time delays on the system dynamic, give a sufficient insight into the behavior of the digitally controlled three-phase PWM rectifier. It can also explain the effect of sampling period and control delay time on system dynamic, accurately predict the system stability boundary and determine the oscillation frequency of the current loop in critical stable. The experimental results verify that the model is a simple and accurate control-oriented small-signal discrete-time model for the digitally controlled three-phase PWM boost rectifier.

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COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 36 no. 1
Type: Research Article
ISSN: 0332-1649

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Article

Richard Ho, Leo Huang, Stanley Huang, Tina Lee, Alexander Rosten and Christopher S. Tang

This paper sets out to present a practical approach to develop an effective customer loyalty program by incorporating competition and heterogeneity in customers'…

Abstract

Purpose

This paper sets out to present a practical approach to develop an effective customer loyalty program by incorporating competition and heterogeneity in customers' preferences, and by avoiding the pitfalls associated with different types of loyalty programs.

Design/methodology/approach

To illustrate the approach, the paper presents a case study of T&T Supermarkets in Canada to show how a retailer can develop a cost‐effective customer loyalty program to retain and reward loyal customers so as to increase shopping frequency and shopping expenditure. The approach consists of four major steps, which are explained in detail.

Findings

Most T&T shoppers split their shopping trips at T&T (for Asian groceries and other specialty items) and a major competitor (for Western items). This creates a unique opportunity for T&T to develop a loyalty program that is intended to entice its loyal shoppers to increase their shopping frequency and expenditure at T&T. A “hybrid” reward structure was recommended to address the fact that there are two major segments of customers who prefer different types of loyalty rewards.

Originality/value

In addition to avoiding some common pitfalls of various loyalty programs, this paper presents a practical approach to develop an effective customer loyalty program by incorporating competition and heterogeneity in customers' preferences.

Details

Managing Service Quality: An International Journal, vol. 19 no. 6
Type: Research Article
ISSN: 0960-4529

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