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1 – 10 of 34
Article
Publication date: 1 February 1993

J.A. Adell, M. Molina and J.M. Cavero

This paper describes the results of an analysis carried out on thermally conductive and electrically conductive adhesives, in order to characterise their behaviour for…

Abstract

This paper describes the results of an analysis carried out on thermally conductive and electrically conductive adhesives, in order to characterise their behaviour for electronics and telecommunications applications.

Details

Microelectronics International, vol. 10 no. 2
Type: Research Article
ISSN: 1356-5362

Article
Publication date: 1 February 1995

P.G. Harris

Conductive adhesives (CAs) have been with us for a number of years and have found use in a variety of applications. More recently pressure from environmentalists has led…

Abstract

Conductive adhesives (CAs) have been with us for a number of years and have found use in a variety of applications. More recently pressure from environmentalists has led to a reappraisal of the potential of the materials to replace solders in mainstream assembly operations. In this respect they have the advantages that they do not contain lead and do not use fluxes. At present, however, there is no substitute for flow soldering operations which still account for a substantial part of the assembly market. There also appear to be serious grounds for concern regarding the reliability of adhesive joints. In particular, recent reports suggest that their resistance to mechanical shock may be unsatisfactory. In the light of these drawbacks it seems likely that CAs will continue to find niche applications, where their particular properties give them advantages, but that soldering will continue to be the dominant technology for PCB assembly for the foreseeable future.

Details

Soldering & Surface Mount Technology, vol. 7 no. 2
Type: Research Article
ISSN: 0954-0911

Article
Publication date: 9 January 2017

Jose M. Brotons and Manuel E. Sansalvador

The economic effects resulting from the commitment to ISO 9001 certification is a controversial issue. Many authors have concluded about the positive economic effects…

Abstract

Purpose

The economic effects resulting from the commitment to ISO 9001 certification is a controversial issue. Many authors have concluded about the positive economic effects resulting from the establishment of quality systems in accordance with the requirements established in the ISO 9001 standard, but other authors have not appreciated this positive relationship. The purpose of this paper is to provide a model that facilitates the valuation of the ISO 9001 quality system.

Design/methodology/approach

In the process of developing a valuation model, given the uncertainty this process involves, the use of fuzzy math is very useful. First, as for an internal valuation method, the authors highlight the discounted cash flow in a fuzzy environment. The internal valuation will be completed by external expert opinions. To improve the information supplied by experts, the paper makes use of the experton theory. In this context, the authors propose the aggregation of the experts’ opinion by using basic defuzzification distribution (BADD)-fuzzy induced ordered weighted averaging. Finally, the results undergo contra-expertise. After presenting the theoretical model, the authors proceed with its application by using a case study.

Findings

The paper develops a new method for the economic evaluation of the ISO 9001 certification.

Originality/value

The authors propose the valuation of ISO 9001 quality management system, and they do it using some interesting tools which fuzzy logic offers. In this way, it is possible to eliminate subjectivity and improve the final results.

Details

Kybernetes, vol. 46 no. 1
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 11 October 2021

Dyanne Brendalyn Mirasol-Cavero and Lanndon Ocampo

University department efficiency evaluation is a performance assessment on how departments use their resources to attain their goals. The most widely used tool in…

Abstract

Purpose

University department efficiency evaluation is a performance assessment on how departments use their resources to attain their goals. The most widely used tool in measuring the efficiency of academic departments in data envelopment analysis (DEA) deals with crisp data, which may be, often, imprecise, vague, missing or predicted. Current literature offers various approaches to addressing these uncertainties by introducing fuzzy set theory within the basic DEA framework. However, current fuzzy DEA approaches fail to handle missing data, particularly in output values, which are prevalent in real-life evaluation. Thus, this study aims to augment these limitations by offering a fuzzy DEA variation.

Design/methodology/approach

This paper proposes a more flexible approach by introducing the fuzzy preference programming – DEA (FPP-DEA), where the outputs are expressed as fuzzy numbers and the inputs are conveyed in their actual crisp values. A case study in one of the top higher education institutions in the Philippines was conducted to elucidate the proposed FPP-DEA with fuzzy outputs.

Findings

Due to its high discriminating power, the proposed model is more constricted in reporting the efficiency scores such that there are lesser reported efficient departments. Although the proposed model can still calculate efficiency no matter how much missing and unavailable, and uncertain data, more comprehensive data accessibility would return an accurate and precise efficiency score.

Originality/value

This study offers a fuzzy DEA formulation via FPP, which can handle missing, unavailable and imprecise data for output values.

Article
Publication date: 29 November 2022

Mina Safizadeh, Mohammad Javad Maghsoodi Tilaki, Massoomeh Hedayati Marzbali and Aldrin Abdullah

The emerging concept of smart city is known to aim at sustainable urban development. One of the requirements for a smart city is to address accessibility inequalities…

Abstract

Purpose

The emerging concept of smart city is known to aim at sustainable urban development. One of the requirements for a smart city is to address accessibility inequalities. This study aims to investigate the accessibility level issues in urban transformation before and after combining different street networks for Penang, Malaysia, as a case study to reveal greater insight and helpful information into mobility and accessibility inequalities for future smart city planning.

Design/methodology/approach

Using DepthmapX software, two main quantitative methodologies of space syntax, namely, spatial integration accessibility (SIA) and angular segment analysis by metric distance (ASDMA), are employed to analyse the level of accessibility for the main streets of George Town site before and after combination with contemporary networks. Integration, choice and entropy values were calculated for the study analysis.

Findings

Results revealed the implications of combining old irregular gridiron structures with the existing planned grid structures. George Town seems to have gained a higher capacity for pedestrian accessibility; however, vehicle accessibility has lost its capacity. Findings further suggest that a combination of irregular structure and grid structure is essential for urban growth in similar historical contexts to improve accessibility and address mobility inequalities.

Originality/value

The study concludes by highlighting the importance of the analysis of street structure transformation to predict consequences and promote the potential to reduce current inequalities in vehicle accessibility.

Details

Open House International, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0168-2601

Keywords

Article
Publication date: 28 December 2022

Aby Grisly Huaman-Ñope, Arthur Giuseppe Serrato-Cherres, Maria Jeanett Ramos-Cavero and Franklin Cordova-Buiza

The study aimed to determine how reputational risk affects the stocks prices of companies listed on the Lima Stock Exchange.

Abstract

Purpose

The study aimed to determine how reputational risk affects the stocks prices of companies listed on the Lima Stock Exchange.

Design/methodology/approach

The study follows a documentary research with a quantitative approach. Companies from different sectors listed on the Lima Stock Exchange were taken as a sample.

Findings

The incidence between the reputational risk and the stock price of the companies listed on the stock market, as well as the impact on profitability indicators and income level were demonstrated. Additionally, it was determined that the cost of capital has a greater impact if the entity is financed from the issuance of bonds rather than by subsidiaries.

Originality/value

Companies that presented well-known events in Peru and those that caused damage to their corporate reputations were studied. Likewise, information from sources such as Monitor Empresarial de Reputación Corporativa, Peruvian Securities Market Regulator’s office and Lima Stock Exchange was documented in order to analyze the variations in financial indicators during the indicated events. Financial models such as CAPM and GORDON-SHAPIRO were also used.

Details

Managerial Finance, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0307-4358

Keywords

Article
Publication date: 16 November 2015

Rocio Martin-Santos, Elfi Egmond, Myriam Cavero, Zoe Mariño, Susana Subira, Ricard Navines, Xavier Forns and Manuel Valdes

The purpose of this paper is to provide a comprehensive overview of the current knowledge regarding chronic hepatitis C (CHC) infection, antiviral therapy, depression, and…

Abstract

Purpose

The purpose of this paper is to provide a comprehensive overview of the current knowledge regarding chronic hepatitis C (CHC) infection, antiviral therapy, depression, and gender.

Design/methodology/approach

CHC and its treatment options were reviewed examining their relationship with depression and gender.

Findings

CHC is a high prevalent chronic infection worldwide, being similar in men and women. However, the infection shows many gender differences in terms of innate response, genetic variability (i.e. IL-28B), route of transmission (i.e. intravenous drug use), disease progression (i.e. fibrosis), lifetime period (i.e. pregnancy), and risk factors (i.e. HIV). Both the hepatitis C infection and antiviral treatment (especially when using the pro-inflammatory cytokine interferon α), are highly associated with depression, where female gender constitutes a risk factor. It seems that the new direct-acting antiviral combinations produce fewer neuropsychiatric side effects. In fact, the presence of depression at baseline is no longer a limitation for the initiation of antiviral treatment. Antidepressant drugs have been recommended as current depression and prophylactic treatment in risk subgroups. However, caution should be exercised due to the risk of drug-drug interactions with some antiviral drugs. Women should be counselled prenatal, during and after pregnancy, taking into account the clinical situation, and the available evidence of the risks and benefits of antiviral and antidepressant treatments. Multidisciplinary approach shows cost-efficacy results.

Originality/value

The paper clarifies the complex management of CHC therapy and the importance of individualizing treatment. The results also underline the need for an integrated multidisciplinary approach.

Article
Publication date: 1 April 1991

J. Cavero and A. Rodriguez

This paper concisely describes polymer thick film technology used with printed circuit boards as an interesting means of achieving time and cost reduction. Telephone…

Abstract

This paper concisely describes polymer thick film technology used with printed circuit boards as an interesting means of achieving time and cost reduction. Telephone keypads and edge connectors manufactured with this technology and using two different processes are subjected to environmental and life tests in order to compare them with the traditional gold‐plated keypads and edge connectors used in the same applications.

Details

Circuit World, vol. 18 no. 1
Type: Research Article
ISSN: 0305-6120

Article
Publication date: 22 November 2021

Lisa Schuster and Joy Parkinson

mHealth services are effective and cost efficient, yet wide-scale adoption of these services by consumers has yet to be achieved, constraining their public health benefit…

Abstract

Purpose

mHealth services are effective and cost efficient, yet wide-scale adoption of these services by consumers has yet to be achieved, constraining their public health benefit. Further investigation of non-technological determinants of mHealth adoption is needed; specifically, the role of consumers' goals has received scant attention and forms the research focus.

Design/methodology/approach

Study 1 comprised 20 interviews with participants who possess a health goal, with the data analysed using an abductive reasoning approach. Study 2 was a 15-min online survey (n = 653), with the data analysed using multi-group structural equation modelling.

Findings

Study 1 identified several antecedents to the desirability and feasibility of consumers' health goals, which influence their desire to use mHealth services. Study 2 shows significant differences in the determinants of mHealth service acceptance depending on whether consumers set concrete as opposed to abstract goals, but social acceptance of mHealth services of these services is important for both groups.

Practical implications

The findings suggest emphasising the importance of health goals to achieving other consumer goals (e.g. work or travel goals), the efficacy of mHealth services relative to other service alternatives for achieving those health goals, and the social acceptance of mHealth services to increase their uptake.

Originality/value

This study is the first to use construal-level theory to improve understanding of the role of consumers' goals in the adoption of mHealth services. By identifying the antecedents to goal desirability and feasibility, it also broadens the model of goal-directed behaviour.

Details

Journal of Service Theory and Practice, vol. 32 no. 1
Type: Research Article
ISSN: 2055-6225

Keywords

Article
Publication date: 1 February 2016

Wanglin Ma and Awudu Abdulai

The purpose of this paper is to investigate the determinants of marketing contract choices including written contracts, oral contracts and no contracts, as well as to…

Abstract

Purpose

The purpose of this paper is to investigate the determinants of marketing contract choices including written contracts, oral contracts and no contracts, as well as to examine the impact of marketing contracts on net returns from apple production in China.

Design/methodology/approach

A two-stage selection correction approach (Bourguignon, Fournier, and Gurgand (BFG)) for the multinomial logit model is employed to estimate the impact of marketing contracts on net returns from apple production. On the basis of the BFG estimation, the authors also use an endogenous switching regression model and a propensity score matching technique to estimate the causal effects of marketing contract choices on net returns from apple production.

Findings

The results reveal significant selectivity correction terms in the choices of both written contracts and no contracts and insignificant selectivity correction terms in the choice of oral contract, indicating that accounting for selection bias is a prerequisite for unbiased and consistent estimation. The findings also indicate written contracts increase apple farmers’ net returns, while oral contracts exert the opposite effect.

Originality/value

To the best of the authors’ knowledge, this study is the first to examine the impact of marketing contract choices on net returns from apple production, accounting for selectivity effects.

Details

China Agricultural Economic Review, vol. 8 no. 1
Type: Research Article
ISSN: 1756-137X

Keywords

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