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Article
Publication date: 10 April 2009

Chunyuan Li, Xitao Wang and Wenxia Yuan

The increasing utilization of Al‐matrix composites in electronics packaging industry raises demands of solder materials with melting temperature at 400‐500°C. The purpose of this…

274

Abstract

Purpose

The increasing utilization of Al‐matrix composites in electronics packaging industry raises demands of solder materials with melting temperature at 400‐500°C. The purpose of this paper is to determine the thermal properties of two Ag‐Cu‐Sb alloys with the composition close to two eutectic points, and two Au‐Ag‐Ge alloys along the eutectic line, to observe the microstructures and to investigate the wettability of the alloys, and to evaluate the possibility for them to be used as medium temperature solders.

Design/methodology/approach

Four candidates of solder alloys in the Au‐Ag‐Ge (AAG1, AAG2) and Ag‐Cu‐Sb systems (ACS1, ACS2) were studied to reveal microstructures, melting points, wettabilities, and the interfaces between the solder and Al/SiC substrate coated with Au and Ni.

Findings

The paper finds that the ACS1 and ACS2 alloys possess small temperature gaps between solidus and liquidus: 422.9°C/429.2°C and 483.3°C/488.1°C, respectively. For two AAG alloys, the temperature ranges between solidus and liquidus are larger than 40°C. The wettability tests showed that two ACSs and AAG1 alloys have good wettability to the substrate. Similarly, except ACS2 alloy, the other alloys exhibit good adhesion with the substrate.

Originality/value

The paper shows that the ACS1 alloy and the AAG1 alloy could be used as the optimum solder materials for 400‐500°C owing to the good wettability and proper melting point.

Details

Soldering & Surface Mount Technology, vol. 21 no. 2
Type: Research Article
ISSN: 0954-0911

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Book part
Publication date: 2 December 2021

Gordon Anderson and Rui Fu

Wellbeing evaluation using ordered categorical response data is hazardous given the scale dependent nature of most measures of wellbeing and inequality. Here, scale independent…

Abstract

Wellbeing evaluation using ordered categorical response data is hazardous given the scale dependent nature of most measures of wellbeing and inequality. Here, scale independent instruments for measuring levels of wellbeing and inequalities between groups in multidimensional ordered categorical environments are introduced and applied in a study of health and consumption wellbeing and the aging process in twenty‐first century China. Urban/rural location, gender, age and the availability of welfare support were considered circumstances in what is in essence a study of equality of opportunity in the acquisition of health and consumption wellbeing in Chinas’ aging population. Older populations are found to experience diminished and increasingly diverse wellbeing outcomes that are, to some extent, ameliorated by welfare support.

Details

Research on Economic Inequality: Poverty, Inequality and Shocks
Type: Book
ISBN: 978-1-80071-558-5

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Article
Publication date: 1 July 2006

Xuejing Li

This purpose of this paper is to describe the course of information literacy given by the Chongqing University library to cultivate university students' information awareness…

1148

Abstract

Purpose

This purpose of this paper is to describe the course of information literacy given by the Chongqing University library to cultivate university students' information awareness. Up‐to‐date information retrieval skills, comprehensive document skills and innovative thinking are encouraged.

Design/methodology/approach

Adopts a range of innovative teaching/learning methodologies using modern teaching methods and materials; and combines these with scientific and technical consultation and patent agent cases. Describes how this course has been brought into the university undergraduate and graduate teaching plan.

Findings

The utilization rates for documents and resources in the library have improved; and many other social benefits have been achieved.

Originality/value

Will guide others wishing to set up an information literacy education course and enhance the information literacy of university students.

Details

Library Management, vol. 27 no. 6/7
Type: Research Article
ISSN: 0143-5124

Keywords

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Article
Publication date: 4 December 2019

Min Li, Fangbin Xiao, Yang Cheng, Bi-Jun Xie, Chen-Yun Liu and Baoni Xu

This paper aims to attempt to explore the influence of network position on innovation performance, specifically for companies from a less-developed area in China.

453

Abstract

Purpose

This paper aims to attempt to explore the influence of network position on innovation performance, specifically for companies from a less-developed area in China.

Design/methodology/approach

The paper uses a social network analysis method based on the data of high and new tech companies from Jiangxi province, China. It relies on Ucinet 6.212 software for data processing.

Findings

The present work, on the one hand, reveals that a high and new tech company from Jiangxi province tends to achieve better innovation performances if it is in the central position of its social network. On the other hand, it indicates that the same type of company from the same area does not always accomplish better innovation performance, even it possesses more structural holes.

Originality/value

The conclusions of this paper suggest that a high and new tech company from a less-developed area in China should build up its position closer to the center when constructing a social network. Meanwhile, the company should also exert more effort into managing its networks, as only building structural holes offers little help with operations besides showing that it has a broad social network.

Details

Chinese Management Studies, vol. 14 no. 1
Type: Research Article
ISSN: 1750-614X

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Article
Publication date: 30 May 2018

Mehmet G. Yalcin, Koray Özpolat and Dara G. Schniederjans

More than two decades long technological improvements in information sharing have not yet ensured a flawless execution of vendor managed inventory (VMI) and left interested…

873

Abstract

Purpose

More than two decades long technological improvements in information sharing have not yet ensured a flawless execution of vendor managed inventory (VMI) and left interested parties wondering about the reasons of poor results. Although VMI is a collaborative tool, the relational factors in a VMI setting have not received enough attention due to challenges in obtaining relational buyer-supplier data in addition to extant focus on analytical approaches. The purpose of this paper is to investigate post-implementation relational factors in order to extract relevant insights.

Design/methodology/approach

Accounting for the duration of the VMI relationship, the authors focus on two dimensions of VMI often ignored post-implementation: dependence of the buyer on the VMI-supplier and trust of the buyer in the VMI-supplier. Cross-sectional data were collected using a survey collected from distributors mostly in auto and electrical supply industries, which have their inventories managed by manufacturers through VMI arrangements. The sample was obtained from a leading third-party VMI-platform service provider that serves thousands of distributor-manufacturer locations with billions of dollars in sales orders. Multiple ordinary least squares regression has been used to test the hypotheses.

Findings

This paper provides empirical support that in the post-implementation stage, longer VMI relationships are associated with higher distributor dependence on the manufacturer. In addition, too much dependence could actually hurt the distributor’s trust in the manufacturer.

Practical implications

The authors propose that distributors maintain some of the purchasing and inventory management skills in house to limit their dependencies on the manufacturers. Manufacturers should also invest in trust-building activities, such as regular communications with distributors.

Originality/value

This is the first study providing empirical evidence on the positive association between length of VMI relationship and buyer dependence on the supplier, and curvilinear dependence-trust link in a post-implementation VMI context.

Details

International Journal of Physical Distribution & Logistics Management, vol. 48 no. 7
Type: Research Article
ISSN: 0960-0035

Keywords

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