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Article
Publication date: 25 July 2008

Zhi‐Yuan Cui, Yeong‐Seuk Kim, Moon‐Ho Choi, Hyung‐Gyoo Lee and Nam‐Soo Kim

The purpose of this paper is to present the design and optimization of a comparator with two transistors.

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Abstract

Purpose

The purpose of this paper is to present the design and optimization of a comparator with two transistors.

Design/methodology/approach

The effect of back‐gate bias in MOSFET is analyzed and applied to a comparator circuit in a flash‐type A/D converter (ADC). The 4‐bit flash ADC is simply structured by change of comparator block based on CMOS latch with pMOSFET switch. The back‐gate bias on MOSFET changes the threshold voltage and provides for a CMOS inverter to shift the voltage transfer characteristics. In the new type comparator, the variation of turn‐on voltage is controlled within 0.1 V in 4‐bit ADC. The fabrication is done in a 0.35 μm single‐poly four‐metal process.

Findings

Layout simulation shows that INL is within 0.3 LSB and SNDR is 25.4 dB at input frequency of 20 KHz and sampling rate of 4 MS/s. The 0.26 × 0.43 mm 2 ADC dissipates 1.2 mW at supply voltage of 3.3 V.

Originality/value

A comparator which uses the effect of the back‐gate bias on MOSFET is applied to a flash ADC. The paper is of value in showing how the circuit of this comparator is quite simple compared with a conventional comparator based on a CMOS latch, which is adaptable for a low‐power analog circuit in future. The experimental output of the 4‐bit flash ADC shows a good agreement with a simulation. Power consumption 1.2 mW, INL 0.2 LSB, and SNDR 25 dB are obtained in the simulation study.

Details

Microelectronics International, vol. 25 no. 3
Type: Research Article
ISSN: 1356-5362

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Article
Publication date: 11 December 2024

Songbo Liu, Jinkai Cheng, Zhen Wang and Shilong Wei

This study aims to investigate how individual career management (ICM) affects career success in Chinese organizations. Leader emergence was examined through the theoretical lens…

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Abstract

Purpose

This study aims to investigate how individual career management (ICM) affects career success in Chinese organizations. Leader emergence was examined through the theoretical lens of implicit leadership theory as a mediating mechanism of this relationship. In addition, leadership self-efficacy and organizational warmth were analyzed jointly as boundary conditions strengthening the relationship between ICM and leader emergence.

Design/methodology/approach

To avoid common method bias, the authors adopted a three-wave data collection with a one-month lagged design. A total of 765 questionnaires were distributed and 424 usable questionnaires were collected. Mplus version 8.3 was used to test the hypothesized relationships.

Findings

Findings indicated that ICM is positively related to subjective career success and objective career success via leader emergence. Moreover, leadership self-efficacy and organizational warmth jointly moderate the relationship between ICM and leader emergence.

Originality/value

Based on implicit leadership theory, this study identifies leader emergence as a critical mechanism explaining the positive impact of ICM on career success in the Chinese context. Lastly, results stress the simultaneous need for leadership self-efficacy and organization warmth, which can promote high-ICM employees to emerge as leaders.

Details

Chinese Management Studies, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1750-614X

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Article
Publication date: 10 December 2024

Yasir Mansoor Kundi, Alessandro Lo Presti and Hira Khan

As employees face increased turbulence due to uncertain economic and organisational conditions, they are nowadays pushed to be proactive in both their jobs and careers in terms of…

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Abstract

Purpose

As employees face increased turbulence due to uncertain economic and organisational conditions, they are nowadays pushed to be proactive in both their jobs and careers in terms of heightened customisation, adaptability and flexibility. Drawing from the career construction theory, we examine the reciprocal associations of a contemporary career orientation among employees to customise one’s own career (i.e. protean career orientation) vs one’s own job (i.e. job crafting behaviours) as well as the boundary conditions due to the levels of career adaptability.

Design/methodology/approach

We conducted a cross-lagged study with three waves using data collected from a sample of Polish employees. The data were analysed using structural equation modelling in AMOS.

Findings

Results from a cross-lagged panel study with 168 participants revealed a bidirectional relationship between protean career orientation and job crafting behaviours. The results also confirmed the moderating role of career adaptability between these two variables.

Originality/value

This research is one of the first to examine a reciprocal relationship between protean career orientation and job crafting. Moreover, it examines the moderating role of career adaptability in the aforementioned association.

Details

Career Development International, vol. 30 no. 1
Type: Research Article
ISSN: 1362-0436

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Article
Publication date: 1 June 2023

Muhammad Latif Khan, Rohani Salleh, Amjad Shamim and Mohamad Abdullah Hemdi

This paper aims to investigate the role-play of Protean Career Attitude (PCA) and Career Success (CS) in Affective Organizational Commitment (AOC).

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Abstract

Purpose

This paper aims to investigate the role-play of Protean Career Attitude (PCA) and Career Success (CS) in Affective Organizational Commitment (AOC).

Design/methodology/approach

A cross-sectional study on 376 employees from 55 hotels in Malaysia were conducted. The co-variance-based structural equation modeling was employed to analyze the data to test the direct and indirect relationships of PCA and CS with AOC.

Findings

The findings reveal that self-directed career attitude (SDCA) has a positive direct influence on AOC as well as indirect influence through the mediation of OCS and SCS. However, the value-driven career attitude (VDCA) neither influences AOC nor the OCS.

Originality/value

This is a first paper to body of knowledge in Asian context which identify mediating role of career success (SCA and OCS) to PCA and AOC. The findings of this research are the workplace learning in hospitality management. The authors argue that hotels should not assume spontaneously PCA with diminishing AOC, but rather hotels' attention is required to identify the most important preferences of these butterfly career attitudes such as OCS and SCS. Most importantly the research negates many negative labels of PCA and adds new perception to the contemporary career literature. Higher education institutions, government, and primary, secondary, and post-secondary education departments can play a significant role in developing PCA dispositions like SDCA and VDCA toward career success. Therefore, further study should examine PCA and their relevance to career outcome like job searching and employability of students in Malaysia. The paper is the first, to one's knowledge, to assess organizational commitment with specific measures of PCA. While the results are simple, they refute many stereotypes of the new career and, in that sense, add an important perspective to the career literature.

Details

Asia-Pacific Journal of Business Administration, vol. 16 no. 4
Type: Research Article
ISSN: 1757-4323

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Article
Publication date: 18 October 2021

Adeola Samuel Adebusuyi and Olubusayo Foluso Adebusuyi

The purpose of this study is to investigate how degree-holding secondary school teachers cope in a recessive economy by embracing hybrid entrepreneurship (HE). Specifically, we…

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Abstract

Purpose

The purpose of this study is to investigate how degree-holding secondary school teachers cope in a recessive economy by embracing hybrid entrepreneurship (HE). Specifically, we investigated how comparison with referent others, underemployment and relative deprivation led to HE.

Design/methodology/approach

The study adopted a cross-sectional research design. We used snowball and purposive sampling techniques to recruit 303 bachelor’s degree holders teaching in Nigerian public secondary schools in two states of the federation (Ondo and Ekiti states). We analyzed the data with regression path analysis and controlled for age and gender.

Findings

The results of this study showed the following. First, teachers were high in the feeling of pay underemployment and relative deprivation. Second, pay underemployment and relative deprivation directly led to HE. Third, teachers were indirectly high in HE through either pay underemployment or relative deprivation. Finally, underemployment and relative deprivation serially mediate the relationship between referent others and HE.

Research limitations/implications

Overall, the results suggest that teachers’ involvement in HE is necessity-driven to cope with the recessive Nigerian economy. However, future research should focus on a more experimental approach to determine the cause-effect relationship.

Originality/value

This is the first study to investigate how workers embrace HE to cope with the consequences of a recessive economy.

Details

African Journal of Economic and Management Studies, vol. 12 no. 4
Type: Research Article
ISSN: 2040-0705

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Article
Publication date: 24 July 2024

G. Sathish, Tuheena Mukherjee and Sangeeta Sahney

IHRM identifies career adaptability and cross-cultural adjustment as the central tenants for expatriate career. The present study focuses on; (1) it employs the theoretical…

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Abstract

Purpose

IHRM identifies career adaptability and cross-cultural adjustment as the central tenants for expatriate career. The present study focuses on; (1) it employs the theoretical framework of career construction theory (CCT) to examine the relationship between adaptive readiness, resources and responses by examining the relationship between protean career orientation, career adaptability and cross-cultural adjustment of self-initiated expatriates (SIE) and (2) it explores the moderating role of frequency of interaction that SIEs possess with HCN.

Design/methodology/approach

A total of 278 Indian SIEs engaged in different occupational roles in different sectors, working in six different countries, i.e. United Arab Emirates, Canada, Germany, Singapore, the United Kingdom and the USA responded through primary survey.

Findings

Consistent with CCT conceptualization, the study illustrates a positive partial mediating effect of career adaptability on the direct relationship between protean career orientation and cross-cultural adjustment. Furthermore, the findings of the moderation analysis suggest that frequent interaction of the SIE facilitates the enhancing of cross-cultural adjustment.

Practical implications

The study suggests that lack of protean career orientation might result in lowering employee interest in the job or assignment, and affect effectiveness, satisfaction, productivity and cross-cultural adjustment. The study also recommends systematically increasing the interaction frequency with the HCNs to facilitate SIEs employees for facilitating cross-cultural adjustments (CCA).

Originality/value

The study theoretically and empirically contributes to protean career orientation and career adaptability in the context of expatriates, which is an enabling factor for CCA in job contexts. The relevance of interaction frequency is acknowledged for the adaptability and adjustments for the international workforce perspective.

Details

Journal of Global Mobility: The Home of Expatriate Management Research, vol. 12 no. 4
Type: Research Article
ISSN: 2049-8799

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Article
Publication date: 6 March 2017

Maurizio Bevilacqua, Filippo Emanuele Ciarapica and Ilaria De Sanctis

The purpose of this paper is to analyze relationships between operational characteristics and business growth in Italian manufacturing companies comparing high lean performers…

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Abstract

Purpose

The purpose of this paper is to analyze relationships between operational characteristics and business growth in Italian manufacturing companies comparing high lean performers (HLPs), which are companies with a high degree of application of lean practices, and low lean performers (LLPs). This analysis aims at highlighting the effect of the implementation level of lean practices on operational characteristics of Italian companies and, as a consequence, on business growth.

Design/methodology/approach

A classification in “LLPs” and “HLPs” of Italian manufacturing industries has been developed in order to measure the company’s degree of application of lean practices. A survey was carried out, and a combination of cluster analysis and multi-group structural equation path model was developed in order to answer research hypotheses.

Findings

Results suggest that HLPs are characterized by a greater number of employees and a larger turnover. The operational characteristics that contribute to the business growth owing to the introduction of lean practices are as follows: the range of different finished products managed, the delivery reliability, and speedy response to warranty claim. No differences between HLPs and LLPs in terms of business growth have been highlighted when companies vary the batch size, reduce the medium production time, reduce the percentage of finished products which are subject to claim, and increase the percentage (of turnover) of R&D investment. The study highlights that “LLPs” companies are apparently capable of changing their production schemes and adjusting themselves better for customizing their products.

Practical implications

Companies that aim at implementing lean practices should focus their attention on practices that affect the operational characteristics that contribute to the business growth. Moreover, because of the complexity and effort for the implementation of certain lean practices connected to supplier, workforce, quality, and production efficiency, these practices are more suitable only for large firms with enough resources.

Originality/value

As an attempt to offer strategic and operational perspective on Italian lean practices implementation, this study examined how the degree of application of the different lean practices has an impact on operational and companies’ performance. Hence, even if the present study is limited to the Italian manufacturing companies, it could be a representative of companies that are operating in developed countries that are facing the so-called “anemic growth.”

Details

Journal of Manufacturing Technology Management, vol. 28 no. 2
Type: Research Article
ISSN: 1741-038X

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