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Article
Publication date: 24 October 2023

Calvin Ling, Muhammad Taufik Azahari, Mohamad Aizat Abas and Fei Chong Ng

This paper aims to study the relationship between the ball grid array (BGA) flip-chip underfilling process parameter and its void formation region.

Abstract

Purpose

This paper aims to study the relationship between the ball grid array (BGA) flip-chip underfilling process parameter and its void formation region.

Design/methodology/approach

A set of top-down scanning acoustic microscope images of BGA underfill is collected and void labelled. The labelled images are trained with a convolutional neural network model, and the performance is evaluated. The model is tested with new images, and the void area with its region is analysed with its dispensing parameter.

Findings

All findings were well-validated with reference to the past experimental results regarding dispensing parameters and their quantitative regional formation. As the BGA is non-uniform, 85% of the test samples have void(s) formed in the emptier region. Furthermore, the highest rating factor, valve dispensing pressure with a Gini index of 0.219 and U-type dispensing pattern set of parameters generally form a lower void percentage within the underfilling, although its consistency is difficult to maintain.

Practical implications

This study enabled manufacturers to forecast the void regional formation from its filling parameters and array pattern. The filling pressure, dispensing pattern and BGA relations could provide qualitative insights to understand the void formation region in a flip-chip, enabling the prompt to formulate countermeasures to optimise voiding in a specific area in the underfill.

Originality/value

The void regional formation in a flip-chip underfilling process can be explained quantitatively with indicative parameters such as valve pressure, dispensing pattern and BGA arrangement.

Details

Soldering & Surface Mount Technology, vol. 36 no. 1
Type: Research Article
ISSN: 0954-0911

Keywords

Article
Publication date: 12 June 2023

Shan Jiang, Duc Khuong Nguyen, Peng-Fei Dai and Qingxin Meng

In the hybrid knowledge-sharing platform where paid and nonpaid (“free”) knowledge activities coexist, users’ free knowledge contribution may be influenced by financial factors…

Abstract

Purpose

In the hybrid knowledge-sharing platform where paid and nonpaid (“free”) knowledge activities coexist, users’ free knowledge contribution may be influenced by financial factors. From the perspective of opportunity cost, this study investigates the direct effect of how the amount of monetary income from users’ contribution to paid knowledge activities influences their free knowledge contribution behavior in the future. Further, this study aims to verify the interaction effect of financial and nonfinancial factors (i.e. the experience of free knowledge contribution and social recognition) on free knowledge contribution.

Design/methodology/approach

Objective data was collected from a hybrid knowledge-sharing platform in China and then analyzed by using zero-inflated negative binomial regression model.

Findings

Results show that the amount of monetary income that knowledge suppliers gain from paid knowledge contribution negatively influences their free knowledge contribution. Experience of free knowledge contribution strengthens the negatively main effect, while social recognition has the weakening moderating role.

Originality/value

Although some studies have explored and verified the positive spillover effect of financial incentives on free knowledge contribution, the quantity dimension is ignored. This study examines the hindering influence of the quantity of monetary income from the perspective of opportunity cost. By taking the characteristic of knowledge suppliers and platforms as moderators, this study deepens the understanding of the influence of monetary income on free knowledge contribution in the hybrid knowledge-sharing platform.

Details

Journal of Knowledge Management, vol. 28 no. 2
Type: Research Article
ISSN: 1367-3270

Keywords

Case study
Publication date: 12 July 2023

Ram Subramanian and Grishma Shah

To understand how certain cultural dynamics play out in the case, the main attributes of Hofstede and Meyer’s work are first highlight. While Hofstede focuses on national culture…

Abstract

Theoretical basis

To understand how certain cultural dynamics play out in the case, the main attributes of Hofstede and Meyer’s work are first highlight. While Hofstede focuses on national culture, Meyer’s uses culture as a tool by which to gauge behavior within organizations, teams and individuals. Below the main elements of their work are highlighted. Hofstede’s cultural dimensions are detailed in IM Exhibit 1. Note there are six dimensions on a scale of 0–100. The higher the number, the higher that element of that dimension. For example, the individualism score for the USA is 91, whereas China’s score is 20, suggesting that Americans are much more individualistic, whereas the Chinese are much more collectivist. Students can find where the USA, France and China, the three countries discussed in the case, stand at the Hofstede’s website noted below. For reference, these are also noted in IM Exhibit 2.

Research methodology

All of the information in the case was gathered using publicly available secondary sources (i.e. news articles, annual reports and executive/employee interviews). All sources are cited at the end of the Case/IM.

Case overview/synopsis

On April 12, 2022, LVMH Moet Hennessy Louis Vuitton (LVMH), the global leader in the personal luxury goods, released first quarter earnings for 2022, highlighting their latest acquisition, the New York City-based Tiffany & Co (Tiffany). Tiffany had performed well due to growth in demand in the USA following two difficult years because of the global COVID-19 pandemic. This underscored the fact that Tiffany was still largely dependent on the US market, which was a cause for concern for CEO, Anthony Ledru, who was brought in by the parent LVMH to elevate Tiffany and exploit the high growth market for personal luxury goods in China and other parts of Asia-Pacific. LVMH’s acquisition of Tiffany had been completed on January 7, 2021, and LVMH was expecting the turnaround of the largely US-centric Tiffany to show results by shifting focus to higher-end and more iconic jewelry lines and greater expansion in China. Nonetheless, Ledru’s ability to address the China market for Tiffany was constrained by culture clashes between the company’s French owners and management team and its large cadre of US-based employees. Employees chaffed at what they felt was a rigid and autocratic management style and at the company’s insistence on limits to a work-from-home policy that was instituted in early 2020 because of the pandemic. Ledru and his top management team had to quickly overcome the internal clashes and employee issues to make significant inroads in the China market.

Complexity academic level

This case is appropriate for undergraduate and MBA courses addressing dynamics of global business, strategy and culture, such as cross-cultural management, international business, global strategy and organizational behavior. At both levels, its is found that the case will be valuable in generating a lively discussion on organizational and strategic challenges grounded in often lesser discussed issues around cultural fit. In most courses, the case should be positioned toward the end, mainly because it examines both cultural challenges (French ownership of a quintessentially American company) and strategic initiatives (how to grow the brand itself along with geographic expansion, i.e. China), assuming that the module has covered one or the other/or both at different points in the course.

Details

The CASE Journal, vol. 20 no. 2
Type: Case Study
ISSN: 1544-9106

Keywords

Article
Publication date: 12 February 2024

Bataa Sayed Mohamed Mazen, Badawi Mohamed Ismail, Rushdya Rabee Ali Hassan, Mahmoud Ali and Wael S. Mohamed

The purpose of this study is to detect the effect of some natural cellulosic polymers in their nano forms with the addition of zinc oxide nanoparticles on restoring the lost…

Abstract

Purpose

The purpose of this study is to detect the effect of some natural cellulosic polymers in their nano forms with the addition of zinc oxide nanoparticles on restoring the lost mechanical strength of degraded papyrus without any harmful effects on the inks.

Design/methodology/approach

In the current study, the USB digital microscopy, scanning electron microscope, measurement of mechanical properties (tensile and elongation), pH measurement, color change and infrared spectroscopy were undertaken for the samples before and after treatment and aging.

Findings

In the current study, the USB digital microscopy, scanning electron microscope, measurement of mechanical properties (tensile and elongation), pH measurement, color change and infrared spectroscopy were undertaken for the samples before and after treatment and aging.

Originality/value

The effect of strengthening materials was studied on cellulose and carbon ink, which makes this study closer to reality as the manuscript is the consistent structure of cellulose and inks, whereas most of the literature stated the impact of consolidation materials on the strengthening the cellulosic supports without attention to their impact on inks.

Details

Pigment & Resin Technology, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 5 February 2024

Jiarui Li and Jiyun Kang

Luxury brands struggle to communicate their sustainability commitments to consumers due to the perceived incongruence between “luxury” and “sustainability”. This study aims to…

Abstract

Purpose

Luxury brands struggle to communicate their sustainability commitments to consumers due to the perceived incongruence between “luxury” and “sustainability”. This study aims to provide luxury brands with insights on how to engage consumers with different social value orientations (SVOs) to make sustainable luxury purchases in a compatible manner. It investigates the relationships between personal values (symbolism/universalism), SVOs (pro-self/prosocial orientation) and behavioral intentions toward sustainable luxury brands. It further explores whether these relationships may differ when consumers view themselves as individuals (salient personal identity is activated) versus group members (salient social identity is activated).

Design/methodology/approach

Study 1 (N = 419) used an online experiment in which participants were randomly assigned to either salient personal or social identity conditions to test the proposed model. Study 2 (N = 438) used a fictional brand to further validate the findings. Hypotheses were tested using covariance-based structural equation modeling (CB-SEM) and multi-group SEM.

Findings

Results indicate that prosocial orientation significantly increases consumers’ behavioral intentions toward sustainable luxury brands. Interestingly, pro-self-orientation can also drive intentions to support sustainable luxury brands when consumers’ personal identity is salient. Salient social identity can further strengthen the relationship between prosocial orientation and sustainable luxury behavioral intentions.

Originality/value

This study presents a novel, inclusive definition of sustainable luxury brands and adds theoretical rigor to the SVO framework by revealing the moderating role of salient identities, contributing to the body of knowledge in luxury brand research.

Details

Journal of Product & Brand Management, vol. 33 no. 2
Type: Research Article
ISSN: 1061-0421

Keywords

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