Delfim Soares, Manuel Sarmento, Daniel Barros, Helder Peixoto, Hugo Figueiredo, Ricardo Alves, Isabel Delgado, José C. Teixeira and Fátima Cerqueira
This study aims to investigate the effect of bismuth addition (up to 30 Wt%) on the microstructure and electrical conductivity of a commercial lead-free alloy (SAC405) near the…
Abstract
Purpose
This study aims to investigate the effect of bismuth addition (up to 30 Wt%) on the microstructure and electrical conductivity of a commercial lead-free alloy (SAC405) near the solder/substrate soldered joint. The system under study is referred in this work as (SAC405 + xBi)/Cu, as Cu is the selected substrate in which the solder was casted. The electrical resistivity of this system was investigated, considering Bi addition effect on the local microstructure and chemical composition gradients within that zone.
Design/methodology/approach
Solder joints between Cu substrate and SAC405 alloy with different levels of Bi were produced. The electrical conductivity along the obtained solder/substrate interface was measured by four-point probe method. The microstructure and chemical compositions were evaluated by scanning electron microscopy/energy dispersive spectroscopy analysis.
Findings
Two different electrical resistivity zones were identified within the solder interface copper substrate/solder alloy. At the first zone (from intermetallic compound [IMC] until approximately 100 μm) the increase of the electrical resistivity is gradual from the substrate to the solder side. This is because of the copper substrate diffusion, which established a chemical composition gradient near the IMC layer. At the second zone, electrical resistivity becomes much higher and is mainly dependent on the Bi content of the solder alloy. In both identified zones, electrical resistivity is affected by its microstructure, which is dependent on Cu and Bi content and solidification characteristics.
Originality/value
A detailed characterization of the solder/substrate zone, in terms of electrical conductivity, was done with the definition of two variation zones. With this knowledge, a better definition of processing parameters and in-service soldered electronic devices behavior can be achieved.
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Paulina Araújo Capela, Maria Sabrina Souza, Sharlane Costa, Jose C. Teixeira, Miguel Fernandes, Hugo Figueiredo, Isabel Delgado and Delfim Soares
In a printed circuit board assembly (PCBA), the coefficient of thermal expansion (CTE) mismatch between the solder joint materials has a detrimental impact on reliability. The…
Abstract
Purpose
In a printed circuit board assembly (PCBA), the coefficient of thermal expansion (CTE) mismatch between the solder joint materials has a detrimental impact on reliability. The mechanical stresses caused by the thermal changes of the assembly lead to fatigue and sometimes the failure of the solder joints. The purpose of this study is to propose a novel pad design to obtain an interrupted solder/substrate interface, to improve the PCBA reliability.
Design/methodology/approach
An interruption in the continuous intermetallic compound (IMC) layer of a solder joint was implemented, by the deposition of a silicone film in the pad, changing its geometry. That change allows a redistribution of stresses in the most ductile zone of the solder joint, the solder. The stress concentration at the solder/substrate interface is reduced, as well as the general state of stress at the solder joint.
Findings
A new way was developed to reduce the stress on the solder joints, caused by thermal variations, because of the different components CTEs mismatch. This new method consists of interrupting the IMC layers of the solder joint, strategically, redirecting the usual stresses to a more ductile area of the joint, the solder. This is an innovative method that allows increase the lifetime of PCBAs and the equipments.
Originality/value
In this study, a new pad design concept for higher solder joint reliability was developed to reduce the shear stress in the solder joints because of the CTE mismatch between all the solder joint components.
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José Fernández-Menéndez, Óscar Rodríguez-Ruiz, José-Ignacio López-Sánchez and María Isabel Delgado-Piña
The purpose of this paper is to study how job reductions affect product innovation and marketing innovation in a sample of 2,034 Spanish manufacturing firms in the period…
Abstract
Purpose
The purpose of this paper is to study how job reductions affect product innovation and marketing innovation in a sample of 2,034 Spanish manufacturing firms in the period 2007–2014.
Design/methodology/approach
Poisson and logistic regression models with random effects were used to analyse the impact of downsizing on some innovation outcomes of firms.
Findings
The results of this research show that the stressful measure of job reductions may have unexpected consequences, stimulating innovation. However downsizing combined with radical organisational changes such as new equipment, techniques or processes seems to have a negative impact on product and marketing innovation.
Originality/value
This research has two original features. First, it explores the unconventional direction of causality from the planned elimination of jobs to innovation outputs. Secondly, the paper looks at the combined effect of downsizing and other restructuring measures on different types of innovation. Following the threat-rigidity theory, we assume that this combination represents a major threat for survivors that leads to lower levels of product and marketing innovation.
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Maribel Labrado-Antolín, Isabel Delgado-Piña, José Fernández-Menández and Óscar Rodríguez-Ruiz
This paper aims to explore the impact of face-to-face and online social interactions on coworkers’ perception of performance in coworking spaces (CWS) compared to working from…
Abstract
Purpose
This paper aims to explore the impact of face-to-face and online social interactions on coworkers’ perception of performance in coworking spaces (CWS) compared to working from home (WFH). CWS are work environments where different actors compete and collaborate. The impact of such interactions on performance remains unclear. Building on the conceptual framework of “coopetition” (Bengtsson et al., 2016) and the theory of hyperpersonal interactions (Walther, 1996), this research attempts to bring light into the discussion.
Design/methodology/approach
The study hypothesizes that frequent face-to-face community events negatively affect coworker performance compared to WFH. Conversely, digital platforms connecting CWS users are expected to enhance performance. The authors use a data set of 135 CWS users. Linear regression models are fitted using self-rated performance in the CWS compared to performance when WFH as dependent variable.
Findings
This study’s analysis shows that the frequency of face-to-face events is negatively associated with perceived performance at CWS compared to performance at WFH. Furthermore, CWS digital platforms do not show a significant relationship with performance in CWS compared to WFH.
Originality/value
This study adds to the literature on “coopetition” with specific reference to the case of CWS. It broadens the activity school perspective highlighting that coworking offline and online interactions have different performance implications. The paper also contributes to the theory of hyperpersonal interactions by studying the role of online communication. Findings help CWS managers to make informed decisions about the perceived outcomes of the services they provide. The analysis reveals the need to reconsider the frequency of face-to-face social events to avoid dysfunctional effects.
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Óscar Rodríguez-Ruiz, Maribel Labrado-Antolín, José Fernández-Menéndez and Isabel Delgado-Piña
This study analysed the extent to which differences in personality traits and coworking experiences affect coworkers’ satisfaction with coworking spaces (CWS).
Abstract
Purpose
This study analysed the extent to which differences in personality traits and coworking experiences affect coworkers’ satisfaction with coworking spaces (CWS).
Design/methodology/approach
The present study is based on employee-workplace alignment theory (Appel-Meulenbroek et al., 2021). This approach addresses people’s ability to do their jobs in a certain work environment and studies job satisfaction as an outcome variable. We used a dataset of 135 CWS members grouped in the Spanish Association of Flexible Office Spaces, Prowork Spaces. The regression models were fitted using satisfaction with coworking as the dependent variable.
Findings
The findings support the idea that some psychological traits of coworkers, such as extroversion and agreeableness, have a significant influence on their satisfaction with coworking. Our study also shows that the relationship between coworking experience and satisfaction is curvilinear.
Originality/value
This study contributes to the advancement of employee-workplace alignment theory by showing that some personality traits are relevant variables for person-organisation fit in CWS. While extroversion and agreeableness are traditionally associated with prosocial outcomes, we found that agreeable coworkers were not more satisfied with CWS. In addition, the study identified a nonlinear relationship between experience and satisfaction with CWS, which has not been detected in previous studies.
研究目的
本研究擬探討共同工作空間用戶的性格特質和使用共同工作空間的經驗會如何影響他們對共同工作空間的滿意度, 進而了解這影響的程度.
研究設計/方法/理念
研究人員基於員工工作場所調整理論 (Appel-Meulenbroek et al., 2021) 進行分析和探討。這個研究理念用來了解人們在某種工作環境裏完成工作的能力, 並探討作為結果變數的工作滿意度。研究人員使用的數據集, 包括西班牙柔性辦公空間、團隊協同空間協會 (此為直譯) 內被分類的135個共同工作空間成員, 研究人員以對共同工作空間的滿意度為因變數而設置回歸模型.
研究結果
研究結果確認了共同工作者的諸如外向性和友善等的心理特徵會顯著地影響他們對合作辦公的滿意度。研究結果亦顯示, 合作辦公的經驗與滿意度成曲線的關聯.
研究的原創性
本研究會幫助推進員工工作場所調整理論, 因研究結果顯示, 有些性格特質, 就共同工作空間的人與組織間之可容納性而言是相關的變數。研究人員發現, 雖然外向性和友善在傳統上被認為與親社會結果有所關聯, 但友善的共同空間用戶對共同工作空間不是更為滿意的; 而且, 研究人員確認了一個過去的研究均未曾探測過的關聯, 那就是合作辦公的經驗與對共同工作空間的滿意度之間的關聯是非線性的.
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María Isabel Delgado Piña, Ana María Romero Martínez and Luis Gómez Martínez
The purpose of this paper is to review the research on organizational teams. The aim is delimiting the conceptual space of effectiveness and determining team‐level measurement…
Abstract
Purpose
The purpose of this paper is to review the research on organizational teams. The aim is delimiting the conceptual space of effectiveness and determining team‐level measurement issues.
Design/methodology/approach
A range of published works, which analyse the different variables of effectiveness for each type of team, is reviewed (the most used effectiveness criteria are shown in a table). According to the existence of different types of teams – work team, parallel team, project team and management team – the authors assess what variables and measures are more appropriate according to team type, analyse the problems in gathering data and measuring in this level of analysis and, finally, offer a proposal of measurement issues for future research.
Findings
The authors conclude that effectiveness is a multidimensional concept with three dimensions: performance, attitudinal outcomes, and behavioural outcomes. Regarding team‐level measurement issues, the authors also conclude that there is a need to use multiple data sources and multimethod analyses incorporating consensus and aggregation methods, as well as observation and key informants.
Practical implications
The results of this work can support future research on teams. Although considerable headway has been made in the team effectiveness studies, there are things that still need to be done. The paper shows that a more complete measure of effectiveness must be developed, according to the three dimensions: performance, attitudinal outcomes, and behavioural outcomes.
Originality/value
The paper is a comprehensive review and provides a basis for researchers in the area of effective teams.
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Jorge Jimenez Serrano, María Jesús Delgado Rodríguez, Isabel Rodríguez Iglesias and Rafael Manuel López Pérez
The purpose of this article is to deepen on the crime of assets misappropriation (AM) in the company, collecting through a systematic review of the published scientific literature…
Abstract
Purpose
The purpose of this article is to deepen on the crime of assets misappropriation (AM) in the company, collecting through a systematic review of the published scientific literature those factors or theories that are being used when writing about this type of crime, as well as the implications for the business context.
Design/methodology/approach
The PRISMA methodology of systematic review has been used, from which 21 articles have been included, all of them published since 2005 in scientific journals related to the financial and economic context, but also to the criminological approach.
Findings
The articles provide several factors that are currently of interest in the study of the crime of AM in the company: the type of company in which this crime occurs, the most frequent types of AM, the elements of prevention used, as well as the profile and characteristics of employees who usually commit this type of crime.
Research limitations/implications
The conclusions of this article show the importance of studying this type of crime to combat it, not only because of the economic implications but also because of how it affects other spheres of the business context. The research has focused exclusively on articles written in English with the keyword “misappropriation assets”, which may have limited the inclusion of other articles of interest, although the objective of this study is precisely to evaluate the scientific interest in this specific type of Fraud.
Practical implications
Conclusions are drawn regarding prevention elements that are currently being used in the company to detect and combat this type of crime, as well as suggestions for future research.
Originality/value
This article seeks to support and encourage the study of this type of crime in business, following the sustainable development goals, which are the global goals designed to eradicate poverty, protect the planet and ensure global prosperity, among which is the promotion of business ethics and transparency in economic activities, for which the crime of misappropriation is a violation of these principles.
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Gregorio Martín-de Castro, Isabel Díez-Vial and Miriam Delgado-Verde
The phenomenon of intellectual capital in the firm has been deeply researched and immensely debated in the management literature in recent years. After three decades of evolution…
Abstract
Purpose
The phenomenon of intellectual capital in the firm has been deeply researched and immensely debated in the management literature in recent years. After three decades of evolution, it has become established as a mature field of research. At this point, a review of its theoretical foundations and current and future evolution provides us with the state of the art of intellectual capital in the firm. The purpose of this paper is to present a quantitative review of the existing literature on intellectual capital in the firm.
Design/methodology/approach
In this paper, the authors present a quantitative review of the existing literature on intellectual capital in the firm. To do so, the authors searched the JCR-SSCI database from 1990 to 2016 and identified 553 citing documents; these were split into three main periods in order to identify the interactions and path dependencies existing between different foundations of research. In addition, areas of current and future research connected with the theoretical foundations were identified. For these purposes, the authors used both co-citation analyses as well as bibliographical coupling.
Findings
In this paper, three main stages of IC evolution have been identified with the main topics and research frames, as well as their path dependencies. Additionally, four main areas of current and future development of IC have been identified: IC measurement, IC in new business models, IC disclosure, and its role in social capital and human resource practices.
Research limitations/implications
The present bibliometric study is a quantitative review of papers published in the Web of Science database.
Originality/value
By its dimensions ‒ broad academic disciplines and longitudinal character ‒ this bibliometric study constitutes a new quantitative review of the IC discipline, both drawing its intellectual evolution in the last decades, and showing current and future research trends in IC and the firm.
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Uncertainty and unpredictability in the lives and livelihoods of informal microentrepreneurs in Quito, Ecuador, increase their vulnerability and make the challenges of life at the…
Abstract
Uncertainty and unpredictability in the lives and livelihoods of informal microentrepreneurs in Quito, Ecuador, increase their vulnerability and make the challenges of life at the social and economic margins of society more difficult to overcome. Through their small informal microenterprises, they work to maintain their everyday survival and sustain their hopes for a better future. Some turn to microfinance to support their microenterprises. Worldwide, microfinance is promoted as a powerful instrument for social and cultural change, creating a narrative of microfinance that contains promises of transformative effects. Over 16 months of research, interviews with 120 informal sector microentrepreneurs revealed these promises and the limitations of microfinance in their lives and the individualization of social problems present within the narrative of microfinance. The strength and flexibility of this narrative of microfinance has been built, interpreted, and reinterpreted in ways that allows it to be applied, and accepted, in various global social and political contexts. Informal microenterprises and microfinance are ways that people cope with economic uncertainty and social instability in Quito. Although people turn to microfinance in an effort to cope with their vulnerability, microfinance can increase their everyday vulnerabilities and place the responsibility for overcoming social problems upon the individuals who suffer them the most. Microfinance, therefore, becomes well-intentioned debt, creating new subjects and selfhoods that shift the social problems of poverty and inequality to individual problems that should be overcome by self-reliance.