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This work aims to investigate the modifications in a transistor behavior after hot carrier injection processes from the integrated junction.

A high voltage is applied across the drain‐source contacts, so a reverse current is induced through the integrated junction and defects are then created.

The results point out to a dependence of the VDMOSFET reliability on the operating conditions which could induce parasitic effects on the structure. Induced defects alter the form of several MOSFET characteristics.

A new method of degradation is presented along with a series of characterization techniques‐based electrical parameters variations.

The purpose of this paper is to study the effects of positive and negative bias stressing on switching performance of power VDMOSFETs used in communication systems.

A positive and a negative high‐field stress are applied on the gate oxide of MOS devices and electrical characterization is performed after each period of stress, a comparison is presented.

Compared results between the two types of stress show that certain doses of stress can increase the device speed. The underlying changes of the threshold voltage under these two types of stress are referred to as the variation of the gate oxide‐trapped charge and interface trap densities.

This paper presents new and original experiments run over a number of metal‐oxide semiconductor field effect transistor devices to compare the effects of the direction of the applied field on the degradation and the reliability of these structures.

The purpose of this work is to highlight the evolutions of the switching times parameters of commercial vertical diffuse metal oxide semiconductor field effect transistors after a hot carrier injection in the reverse bias pn junction.

Experiment was done basically by hot carrier injection, where a large drain‐source voltage V_DS is applied to reverse bias the body drain junction, then inducing a 30 mA reverse current. The drain polarization was increased gradually, by steps of 0.5 V/s, up to desired V_DS value in order to prevent sudden breakdown. Switching time parameters were measured at different temperatures and up to 300°C.

The experimental results show that the device rise time decreases significantly for the first period of stress time at room temperature, which increases the speed of the device during this turn‐on switch. This event was associated with the high‐electric field in the junction region that pulls electrons from the oxide gate into the channel, thus leaving trapped holes in the oxide bulk due to their low mobility.

This research study has an important value in terms of engineering application where speed of electronic devices is one of the most valuable parameters in the communication and information technology fields.

This paper aims to explore whether environmental, social and governance (ESG) performance is positively associated with firm investment efficiency (IE) in emerging economies. It also examines whether board cultural diversity can moderate the ESG–IE relationship.

This paper uses a cross-country sample of listed firms located in seven emerging countries over the 2011–2019 period. The authors use a fixed effect panel regression to empirically test the hypotheses. The authors also use a lagged model and a Heckman’s (1979) two-stage procedure to mitigate potential endogeneity issues. In addition, a two-stage least squares regression analysis was done as an additional robustness check.

This study finds that firms with stronger ESG performance have a higher investment efficiency. Interestingly, this study finds that board cultural diversity negatively moderates the impact of ESG performance on IE for firms operating in settings prone to overinvestment. This result suggests that ESG performance plays a less important role in mitigating managers' tendencies to overinvest when corporate boards have more foreign directors. However, the authors do not find such evidence in firms prone to underinvestment. These findings hold after using an alternative measure of IE and controlling for endogeneity concerns.

This paper adds to the existing body of knowledge in three dimensions. First, to the best of the authors’ knowledge, this is the first cross-country study that investigates the linkage between ESG performance and corporate IE in the context of emerging countries. Second, the authors have enriched the prior literature by examining the moderating effect of board cultural diversity on the positive association between ESG performance and corporate IE. Finally, this study has important implications for policymakers and capital suppliers in emerging countries, which strive to facilitate the efficient allocation of scarce resources.

Motivated by recent financial liberalization policies in emerging markets, this study investigates whether bank competition and regulatory capital affect bank risk taking in an international banking context.

Bank competition is regressed, using GLS regression, on various measures of bank risk, to reflect regulatory, accounting and market-based risk-taking. The authors use a sample of publicly traded banks operating in Africa during 2004–2019.

Results show that higher level of bank competition increases bank risk taking and results in greater financial fragility in the absence of banking capital regulations. Furthermore, larger capital adequacy ratios control the risk-taking incentives of managers and guard banks against the risk of default. Further tests confirm the significance of market-based risk measures over accounting and regulatory measures.

Findings are relevant to bank managers and regulators in their sustained effort of finding an optimal balance between bank competition and financial stability. Increased competition should be balanced with capital regulations to curtail bank excessive risky behavior and derive the social benefits of greater competition in the market while sustaining overall economic growth.

This study provides novel evidence in an international context. First, it uses regulatory, accounting and market-based measures of bank risk taking to reflect regulators', management and market participants' emphasis. Another original contribution is the investigation of bank competition across African economies characterized by financial liberalization, stringent banking system and interesting socio-economic challenges.

The purpose of this paper is to investigate and classify the defects on silicon-based power devices under extreme conditions.

Electrical characterization was performed on MOS devices to study their interface defects. The devices were subjected to a voltage or a current constraint to induce defects, and then measurements were done to detect the effects of those defects. Measurements include current voltage, capacitance and conductance characterization. The Hill–Coleman method was used to calculate the interface states density in each case.

It was found that most of the defects have energies within the upper band gap of the semiconductor.

The method used in this paper allows the determination of any interface defects on a Si/SiO₂ structure.

A significant amount of work has been performed in the area of identification of factors affecting construction productivity. Previous studies have tried to determine the most important factors affecting construction productivity in different countries for a long time. As a result of continuous effort in this direction, researchers have identified a wide range of factors. While the subject area has matured, no general agreement could be made on the factors affecting construction productivity. To fill this gap, the purpose of this paper is to undertake a comprehensive systematic review of mainstream studies on factors affecting construction productivity published in the last 30 years (1986–2016).

A total of 46 articles from different sources such as journals, conference proceedings, dissertation and PhD theses were identified and thoroughly reviewed.

Gaps in research and practices are discussed and directions for future research have been proposed. The literature review indicates that despite noticeable differences in the socio-economic conditions across both developed countries and developing countries, an overall reasonable consensus exists on few significant factors impeding productivity. These are, namely, non-availability of materials, inadequate supervision, skill shortage, lack of proper tools and equipment and incomplete drawing and specifications. Nevertheless, implications of technology, site amenities, process studies, project culture, and impacts of physiological and psychological factors were not adequately covered in existing literature. The study also found that traditional construction projects have remained the main focus of these studies while green construction projects have been generally overlooked.

The review does not include studies that report productivity at the organisational or industry level as well as total factor productivity. The scope of the review is limited to work on identification of factors affecting productivity at the activity level in construction projects.

The outcomes of this study would help researchers and practitioners by providing the findings of previous studies in a concise manner. It is also expected that presenting a deeper and wider perspective of the research work performed until now will direct a more focussed approach on productivity improvement efforts in the construction industry.

This review paper undertakes a comprehensive systematic review of studies on identification of factors affecting construction productivity published during the last three decades.

This paper aims to model different causal relations among factors interacting with labour productivity in order to recognize the most important factors influencing and influenced by it.

Top 60 factors affecting labour productivity were determined and grouped into 5 major groups by reviewing previous research and interviewing relevant experts. The interactions of factors were modelled using system dynamics (SD) approach. The resulting causal loop diagrams obtained from SD were then applied for identifying the most crucial factors influencing and influenced by labour productivity through the decision-making trial and evaluation laboratory (DEMATEL) method. The impact of factors on each other was finally determined based on the opinions of 63 experts selected from the Iranian construction industry.

The results indicated that factors such as fatigue, lack of labour motivation and lack of skill are the most influencing, and factors such as schedule delay and inflation in the cost of execution are the most influenced by labour productivity. In the end, a set of recommendations to improve construction labour productivity was also presented.

The main contribution of the study is proposing a novel method which is capable of providing insights into how causes and effects of construction labour productivity are interrelated. Furthermore, the proposed method makes this study distinct from previous research in the light of prioritizing factors and offering recommendations according to the interrelationships among factors.

Non-financial information disclosure may reflect the quality of corporate financial reports or disclosure policy choices. The authors examine the relationship between corporate social responsibility (CSR) and accounting conservatism and also investigate channels through which such effects are transmitted. The purpose of this paper is to explore how CSR, as non-financial information that has received widespread attention, affects choices regarding corporate financial policy.

Using ordinary least squares regression, the authors analyze China CSR Score data for 2010–2018. They control certain influencing variables related to the nature and characteristics of enterprises and discover that CSR can effectively increase accounting conservatism. Then, they extract the components of market reactions to CSR and study the market reaction path of CSR as it affects financial policy. They also conduct a robustness test to ensure that the results are not accidental in a complex environment.

The results reveal the influence of non-financial information on firms’ financial policy. In addition, the results confirm the attraction of liquidity and investor attention as the major market reaction channels by which CSR significantly promotes accounting conservatism. Additionally, other critical paths of influence deserve further exploration. The results remain robust for alternate measures of accounting conservatism, different components of CSR, other proxies on CSR, endogenous testing and alternate estimation methods.

The study represents the first analysis of the influence of CSR information disclosure on accounting conservatism in emerging markets, and it undertakes a preliminary exploration to clarify the mechanism of CSRs’ role in accounting conservatism. The results also provide a policy reference for external supervision and internal governance of enterprises. Thus, the results can help company managers maintain a favorable corporate image and establish a high-level investor protection mechanism.

The purpose of this study is to empirically examine how the voluntary formation of a specialised investment committee (IC) and IC characteristics affect financial distress risk (FDR) and whether such impact is influenced by the level of investment inefficiency.

The authors use a large sample of Gulf Cooperation Council (GCC) non-financial companies during 2006–2016. A principal component analysis is done to aggregate and derive a factor score for IC characteristics (i.e. independence, size and meeting) as a proxy for the effectiveness of IC. This study also uses three measurements of FDR to corroborate the findings and partitions sample firms into overinvesting and underinvesting companies to examine the potential impact of investment inefficiency on the IC–FDR nexus.

Using feasible generalised least square estimation method, the authors document that the likelihood of financial distress occurrence decreases for firms with separate ICs. The authors also find that firms with effective ICs enjoy lower FDR. In other words, the probability of financial distress minimises if the IC is large, meets frequently and has a high number of independent directors. However, the authors find neither any moderation nor any mediation effect of investment inefficiency for the impact of IC and IC attributes on FDR. The additional analysis indicates the expected benefits of an actively performing IC are amplified for firms with risk of both over- and underinvestment. These findings are robust to alternative measures of FDR and investment inefficiency, sub-sample analysis and endogeneity concerns.

This study, to the best of researchers’ knowledge, is the first to provide evidence in GCC firms’ perspective, suggesting that the existence of an effective IC is associated with a lower risk of financial distress, and to some extent, the economic benefits of IC are aggrandised for companies with a high probability of over- and underinvestment problems. These results are unique and contribute to a small but growing body of literature documenting the need for effective ICs and their economic consequences on investment efficiency in the FDR environment. The findings of this study carry valuable practical implications for regulatory bodies, policymakers, investors and other interested parties in the GCC region.