Search results

1 – 10 of over 36000
To view the access options for this content please click here
Article
Publication date: 3 April 2017

R. Askari, M.F. Ikram and S. H. Hejazi

Thermal conduction anisotropy, which is defined by the dependency of thermal conductivity on direction, is an important parameter in many engineering and research studies…

Abstract

Purpose

Thermal conduction anisotropy, which is defined by the dependency of thermal conductivity on direction, is an important parameter in many engineering and research studies such as the design of nuclear waste depositional sites. In this context, the authors aim to investigate the effect of grain shape in thermal conduction anisotropy using pore scale modeling that utilizes real shapes of grains, pores and throats to characterize petrophysical properties of a porous medium.

Design/methodology/approach

The authors generalize the swelling circle approach to generate porous media composed of randomly arranged but regularly oriented elliptical grains at various grain ratios and porosities. Unlike previous studies that use fitting parameters to capture the effect of grain–grain thermal contact resistance, the authors apply roughness to grains’ surface. The authors utilize Lattice Boltzmann method to solve steady state heat conduction through medium.

Findings

Based on the results, when the temperature field is not parallel to either major or minor axes of grains, the overall heat flux vector makes a “deviation angle” with the temperature field. Deviation angle increases by augmenting the ratio of thermal conductivities of solid to fluid and the aspect ratios of grains. In addition, the authors show that porosity and surface roughness can considerably change the anisotropic properties of a porous medium whose grains are elliptical in shape.

Originality/value

The authors developed an algorithm for generation of non-circular-based porous medium with a novel approach to include grain surface roughness. In previous studies, the effect of grain contacts has been simulated using fitting parameters, whereas in this work, the authors impose the roughness based on the its fractal geometry.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 27 no. 4
Type: Research Article
ISSN: 0961-5539

Keywords

To view the access options for this content please click here
Article
Publication date: 16 September 2021

Jungwon Lee, Yunhye Lee and Cheol Park

The purpose of this study is to analyze the effect on movie performance of the breadth and depth of consumer groups targeted by movies and to analyze the ways in which…

Abstract

Purpose

The purpose of this study is to analyze the effect on movie performance of the breadth and depth of consumer groups targeted by movies and to analyze the ways in which electronic word-of-mouth (eWOM) mediates these relationships.

Design/methodology/approach

For empirical analysis, 45 days of sales and eWOM data for 63 movies released in Korea in 2017 were collected, and a panel regression analysis was conducted on a total of 2,835 data items. In addition, the analysis was rigorously verified through three robustness tests.

Findings

The breadth and depth of consumer groups targeted by movies have a non-linear relationship with sales, and this relationship is mediated by the eWOM performance of social media websites. In addition, eWOM performance has a non-linear relationship with sales, and these effects differ depending on the type of eWOM platform involved.

Originality/value

The effects of the breadth and depth of the consumer groups targeted by movies on eWOM performance and movie performance have not been sufficiently investigated. This paper expands on previous studies that reported a linear relationship between eWOM and sales by finding that the effects of consumer group breadth and depth on sales are not linear in terms of the mediation of eWOM performance. In addition, a new research direction is suggested by conceptualizing consumer group breadth and depth using eWOM data, on which basis the new concept of eWOM-to-viewing ratio (eWOM ratio) is proposed.

Details

Asia Pacific Journal of Marketing and Logistics, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1355-5855

Keywords

To view the access options for this content please click here
Article
Publication date: 1 September 1999

Yungwook Kim, Jihye Kim, Jungki Park and Youjin Choi

Tests new proposed tools for measuring media exposure in a crisis management situation. A theoretical formula based on a literature review is applied to two crises: the…

Downloads
2594

Abstract

Tests new proposed tools for measuring media exposure in a crisis management situation. A theoretical formula based on a literature review is applied to two crises: the TWA 800 crash and the ValuJet 592 crash. The application of the proposed formula was generally successful. The outcomes showed that diverse comparisons of media exposure are possible through the new methods.

Details

Corporate Communications: An International Journal, vol. 4 no. 3
Type: Research Article
ISSN: 1356-3289

Keywords

To view the access options for this content please click here
Article
Publication date: 22 August 2008

Pedro Reinares Lara and Jose Manuel Ponzoa

The aim of this study is to analyze over time the evolution of associated costs of direct marketing in Spain and offer operational conclusions for the optimization of…

Downloads
1274

Abstract

Purpose

The aim of this study is to analyze over time the evolution of associated costs of direct marketing in Spain and offer operational conclusions for the optimization of marketing budgets intended for the establishment of contact and/a relationship with the customer.

Design/methodology/approach

This study analyses and compares the relationship between advertising messages sent through direct mail, electronic mail, telemarketing and short cell‐phone messages (SMS), over five years. In the context of a loyalty program, and by means of a historical analysis, an alternating media marketing test is presented: a total of 10,000 contacts per medium studied per year were made.

Findings

The relationship that exists between the cost per contact and the cost per effective response for each one of the above mentioned direct and interactive media.

Practical implications

A series of operational conclusions can be extracted for direct media planning and its marketing budget optimization with regard to choice of medium according to expected response and choice of medium according to cost per response.

Originality/value

The relevance of this work is based on the relative lack of information in Spain over the cost of communications channelled through direct media. Besides, the inclusion of advertising by SMS in this work is particularly relevant due to the fact that the novelty of this media channel means that it has only been analyzed independently by very few existing studies.

Details

Direct Marketing: An International Journal, vol. 2 no. 3
Type: Research Article
ISSN: 1750-5933

Keywords

To view the access options for this content please click here
Article
Publication date: 21 June 2021

Jungwon Lee and Cheol Park

The purpose of this paper is to analyze the relationship between customer engagement in social media (CESM), brand equity and corporate performance and investigated…

Abstract

Purpose

The purpose of this paper is to analyze the relationship between customer engagement in social media (CESM), brand equity and corporate performance and investigated whether these relationships differed according to cultural factors in the United States and South Korea.

Design/methodology/approach

We collected customer engagement on social media data on Facebook and brand equity data from Interbrand for listed companies in the United States and Korea. A total of 405 data sets were analyzed by partial least squares structural equation modeling (PLS-SEM).

Findings

Results revealed that CESM did not affect financial performance through a direct path but was found to have a positive indirect path via the mediation of brand equity. In addition, this relationship was found to differ between the United States and South Korea.

Originality/value

This study contributed to the literature on social media and international management by verifying the relationship between CESM, brand equity and financial performance, and by presenting exploratory research results to ascertain if these relationships differ according to the cultural dimension of the country.

Details

Asia Pacific Journal of Marketing and Logistics, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1355-5855

Keywords

To view the access options for this content please click here
Article
Publication date: 1 June 2000

George K. Chako

Briefly reviews previous literature by the author before presenting an original 12 step system integration protocol designed to ensure the success of companies or…

Downloads
5332

Abstract

Briefly reviews previous literature by the author before presenting an original 12 step system integration protocol designed to ensure the success of companies or countries in their efforts to develop and market new products. Looks at the issues from different strategic levels such as corporate, international, military and economic. Presents 31 case studies, including the success of Japan in microchips to the failure of Xerox to sell its invention of the Alto personal computer 3 years before Apple: from the success in DNA and Superconductor research to the success of Sunbeam in inventing and marketing food processors: and from the daring invention and production of atomic energy for survival to the successes of sewing machine inventor Howe in co‐operating on patents to compete in markets. Includes 306 questions and answers in order to qualify concepts introduced.

Details

Asia Pacific Journal of Marketing and Logistics, vol. 12 no. 2/3
Type: Research Article
ISSN: 1355-5855

Keywords

To view the access options for this content please click here
Article
Publication date: 31 March 2020

Awadhesh Pratap Singh and Chandan Sharma

The goal of this study is to investigate the nexus among TFP (total factor productivity), IT (information technology) capital accumulation, skills and key plant variables…

Abstract

Purpose

The goal of this study is to investigate the nexus among TFP (total factor productivity), IT (information technology) capital accumulation, skills and key plant variables of 34 Indian industries for the period of 2009–2015.

Design/methodology/approach

Annual Survey of Industries (ASI) data series are extracted and formulated using Microsoft SQL server. The authors employ Wooldridge (2009) technique to estimate productivity. To investigate the linkages among productivity, IT, skills and key plant variables, the authors estimate specifications using system generalized method of moments (sys-GMM). Advanced estimation techniques such as Heckman two-step process, probit equations, inverse Mills ratio and panel cointegration are applied to overcome problems of nonstationarity, omitted variables, endogeneity and reverse causality.

Findings

The results indicate that the level of IT capital influences the TFP of Indian industries, so does the level of skilled workers. The outcome suggests that intermediate capital goods, location and ownership type enable the strength of IT capital and that in turn boosts productivity. The authors fail to find any impact of regional factors and contractual labor on IT capital and productivity. While medium-level gender diversity is statistically significant to influence productivity, however, no complementarities exist between gender diversity and IT capital accumulation. The results also indicate that IT demand of Indian industries is sensitive to availability of skilled workforce, fuel and electricity and access to short-term funding.

Originality/value

To the authors' knowledge, this is the first study to investigate the nexus among TFP, IT capital accumulation, skills and organizational factors using ASI unit level data. Besides this, the paper offers two more novelties. First, it uses Wooldridge (2009) technique to estimate productivity, which is used by a handful of studies in the context of India. Second, the study identifies factors that impact productivity growth, IT demand and its adoption in Indian industries and thus contributes to growth and development literature.

Details

Journal of Economic Studies, vol. 47 no. 3
Type: Research Article
ISSN: 0144-3585

Keywords

To view the access options for this content please click here
Article
Publication date: 22 November 2011

Jean E. McLaughlin

The intersection of persuasive technology and personalization features in enterprises such as Amazon.com delivers familiar consumer web interactions related to the…

Downloads
1478

Abstract

Purpose

The intersection of persuasive technology and personalization features in enterprises such as Amazon.com delivers familiar consumer web interactions related to the purchase of goods. This paper aims to describe the intersection in terms of academic library database personalization features, persuasive technology, and student research.

Design/methodology/approach

The paper compares personalization features in popular academic library databases and a case study of usage in a university system provides a perspective on use in the academic community. Research on student use of technology related to databases and Web 2.0 provides information on potential and actual use of personalization features.

Findings

Personalization and filtering features of research databases and the evolving Web 2.0 technology platform offer helpful tools to researchers, but the technology may not be persuasive enough to make significant changes in research behavior. Usage statistics indicate that personalization features are used, but compared to total enrollment, use is not high. There is much room for extension of persuasive elements in library databases.

Research limitations/implications

There are many areas for exploration in determining how personalization may best be used in the future. This includes observing trends in usage, understanding users and their needs, and future technology changes.

Practical implications

Librarians can provide instruction about personalization in library databases in multiple forms. Suggestions for extensions of technology provide a view of possible personalization enhancements including persuasive elements.

Originality/value

The description of the intersection of personalization and persuasive technology in the academic library database environment is unique. The paper's comparison of personalization features of academic library databases provides a view of features and options within popular library databases.

Details

Library Hi Tech, vol. 29 no. 4
Type: Research Article
ISSN: 0737-8831

Keywords

To view the access options for this content please click here
Article
Publication date: 1 December 1997

Alan Wood and Pericles Pilidis

Describes a novel concept in aircraft propulsion: investigates a variable cycle jet engine for a supersonic advanced short take‐off vertical landing (ASTOVL) aircraft. The…

Downloads
2458

Abstract

Describes a novel concept in aircraft propulsion: investigates a variable cycle jet engine for a supersonic advanced short take‐off vertical landing (ASTOVL) aircraft. The engine is the selective bleed turbofan. The selective bleed turbofan is a two shaft, three compressor, variable cycle gas turbine. At subsonic flight speeds it operates as a medium bypass turbofan. It becomes a low bypass turbofan when flying faster and is capable of supersonic cruise in the dry mode. A preliminary design of an ASTOVL aircraft from Cranfield, the S‐95, was used as the vehicle. Outlines the performance of the engine and its integration with the aircraft. Explains off‐design engine performance characteristics and describes variable geometry requirements. The major advantage of this engine is that all the components are employed all the time, for all operating modes, thus incurring low weight penalties. Predicts that the aircraft/ engine combination will perform in a satisfactory way, meeting most performance targets provided that some improvements are carried out.

Details

Aircraft Engineering and Aerospace Technology, vol. 69 no. 6
Type: Research Article
ISSN: 0002-2667

Keywords

Content available
Article
Publication date: 7 June 2021

Judith Vergara Garavito and Sergio J. Chión

This paper aims to examine the relationship between cash holdings (CH) and expected equity return in a sample of firms of Pacific alliance countries.

Abstract

Purpose

This paper aims to examine the relationship between cash holdings (CH) and expected equity return in a sample of firms of Pacific alliance countries.

Design/methodology/approach

This paper constructed a panel of Pacific alliance firms for the period ranging from 2010 to 2016. This paper estimated different specification models using multivariate regression, and the statistical technique used to validate the hypothesis was panel data.

Findings

Results showed that there is a positive relationship between CH and expected equity return (r). The relationship between CH and systematic risk (ß) was estimated and this paper found a positive and statistically significant association. Findings suggest that corporate liquidity contains underlying information that contributes to explain the expected equity return, which, if ignored, can produce quite misleading results.

Originality/value

The results of this study have both academic and practical implications. First, the findings of the research contribute to a better understanding of the asset pricing models in emerging countries. On the other hand, the results obtained in this study can serve shareholders to make better estimations of the expected equity return, so investors can improve the risk-return trade-off due to the model allow a better estimation of the risk-return relation.

Details

Journal of Economics, Finance and Administrative Science, vol. 26 no. 51
Type: Research Article
ISSN: 2077-1886

Keywords

1 – 10 of over 36000