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

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.

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.

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.

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.

This paper aims to identify a suitable convolutional neural network (CNN) model to analyse where void(s) are formed in asymmetrical flip-chips with large amounts of the ball-grid array (BGA) during underfilling.

A set of void(s)-filled through-scan acoustic microscope (TSAM) images of BGA underfill is collected, labelled and used to train two CNN models (You Look Only Once version 5 (YOLOv5) and Mask RCNN). Otsu's thresholding method is used to calculate the void percentage, and the model's performance in generating the results with its accuracy relative to real-scale images is evaluated.

All discoveries were authenticated concerning previous studies on CNN model development to encapsulate the shape of the void detected combined with calculating the percentage. The Mask RCNN is the most suitable model to perform the image segmentation analysis, and it closely matches the void presence in the TSAM image samples up to an accuracy of 94.25% of the entire void region. The model's overall accuracy of RCNN is 96.40%, and it can display the void percentage by 2.65 s on average, faster than the manual checking process by 96.50%.

The study enabled manufacturers to produce a feasible, automated means to improve their flip-chip underfilling production quality control. Leveraging an optimised CNN model enables an expedited manufacturing process that will reduce lead costs.

BGA void formation in a flip-chip underfilling process can be captured quantitatively with advanced image segmentation.

This study aims to investigate the impact of corporate diversification and growth opportunities on the performance of real estate investment trusts (REIT) in Malaysia and Singapore before and during the pandemic.

The sample consists of 33 public-listed REITs across Singapore and Malaysia. A dynamic panel system generalized method of moments (DPS-GMM) estimation is used to account for unobservable factors and a relatively short sample period (2009–2022).

Results indicate that the impact of diversification is contingent on the market where the REIT is based and other institutional factors. The estimates also show that diversified REITs are better able to weather period of economic uncertainty.

We provided a definitive answer as to why corporate diversification leads to conflicting outcomes – market and institutional factors, strategic intent and the overall economic environment. We also show that the impact of typical firm controls (i.e. free cash, size) can differ. Future firm-level work should thus study similar phenomenon more contextually and carefully consider these varying effects.

The literature is divided on the impact of diversification on firm performance. By using a two-country sample, we show conclusive evidence that this contradictory outcome is due to market and institutional factors. We also show evidence that strategic intent is an important factor that influences the outcomes of diversification, regardless of market. We also infer that excess cash aids the resilience of the firm, contrary to the negative perception of excess cash during normal times. Firm size, in contrast, does not contribute to firm performance during a crisis.

This chapter identifies the attributes that learners need in order to learn effectively in new technology rich educational environments. There are a number of different ways of synthesising the findings from this emerging literature which relies heavily on qualitative research. This chapter reports on a literature review which adopted a deliberately interpretative qualitative meta-analysis, synthesising the findings from 15 key studies. As such, the chapter demonstrates a way of reviewing and compiling current research. The synthesis resulted in the identification of six attributes that learners need to do well in next generation learning spaces. These are engaged, connected, confident, adaptable, intentional and self-aware. Although some of these attributes are applicable to all learning contexts, those of being connected, confident, adaptable, and intentional seem to be particularly important in learning in next generation learning spaces. The challenge is to design learning activities that encourage and reward the development of these attributes. The hope is that through both its findings and its method, this chapter provokes debate on what it now means to be a successful learner in today’s technology rich world.

The worlds of literature and business are as different as they get. While literature often revels in the artistic and abstract aspects, business focuses on the more practical and realistic facets of life. Literature talks ideas, business speaks money. Writers express themselves with words, business men prove themselves through numbers. Former US President Calvin Coolidge once exclaimed, “The business of America is business. Not Art!” (West brook, 1980:1). However, this difference is, at most, on the surface. Literature and business intertwine on more perspectives than one might think. For example, there are traces of corporate capitalism in Upton Sinclair’s The Jungle in which workers are portrayed as “slaves to the economic system” (Watts, 1982:77). Or Joseph Heller’s Something Happened depicts the harsh rules of business by which any one who is not contributing efficiently to the success of a company will be discarded, also known as corporate Darwinism (Horner, 1992:27). Or in Mark Twain’s A Connecticut Yankee in King Arthur’s Court, with a humourous tone, medieval England is modernised with various economic measures, such as new currency, stock exchange in the court, and full‐time employment for the knights, and hence saved from financial ruins (West brook, 1980:49). In other words, literature has been drawing inspirations from the financial market. Therefore, it might not be surprising if there are major themes in literature than can be applied to the corporate world. In fact, managers at all levels can learn valuable lessons for the many areas of business from literature.

This research profiles consumers of pirated products, specifically pirated brands of clothing. Utilising a structured questionnaire and counter‐biasing statements, results from face‐to‐face street‐intercept interviews showed that low spenders on pirated brands of clothing are mainly people aged 19 to 24 with a blue‐collar occupation, relatively low monthly income, secondary education level, and no children. High spenders on pirated brands are in the age bracket 25‐34 with white‐collar jobs, a monthly income of HK$10,000‐HK$19,999, tertiary or university education, and children. Consumers identify pirated brands of clothing usually by lower price and buying location, but price was not the sole determinant for purchase. Finally, they bought the pirated brands mainly for private use. Based on these results, the paper makes recommendations to original brand manufacturers and policy makers for combating pirated products.

The aim of this paper is to expand the scant literature related to retail branding ideology and the application of mythotypes to flagship stores within the Chinese setting. The study explores the transplantation of a retail brand ideology in the form of complex home‐country cultural content to a host culture whose local retail narratives differ significantly from those of the brand enterprise.

This is an ethnographic study that spans the two years of the focal store's existence. With the help of native‐speaking graduate assistants, store visits, interviews with Chinese locals and internet mentions and secondary information were collected. Data include fieldnotes, interview transcripts, photographs, news articles, blog comments and website information.

The paper details the mythotypic mistuning of marketscape and mindscape that contributed to the failure of this flagship store and build theory concerning the implementation of retail brand ideology and retail theatrics. The paper concludes that successful themed flagship brand stores encapsulate ideology in stories composed of mythotypes and encourages the enactment of that ideology through multiple, interrelated brand experiences. Misalignments of these mythotypes can impede the acceptance of retail brand ideology and the diffusion of the retail theatre concept.

While foreign and domestic flagship brand stores have flourished in China, cultural propriety of these stores includes a host of physical design cues that must mesh with the local culture's sensibilities and the brand's provenance. To translate the retail brand ideology into customer‐centric meaning is challenging. The presence or absence of mythotypes comprising the servicescape profoundly affect their success.

This study investigated how college students’ pace of life and perceptions of communication technologies shape the choices they make when engaging in mediated communication with their parents.

We conducted 21 interviews to explore how students’ understandings of various communication technologies, the rules and patterns of technology use in their families, and the circumstances surrounding their use of technologies while at college influence the number and type of media they use to communicate with their parents.

We found that perceived busyness and generational differences played a large role in limiting technologies used, with environmental factors, the purpose of communication, and complexity of message also contributing to technology choices.

This study extends media multiplexity theory by investigating media choice and relational tie strength in an intergenerational context.