Search results

The purpose of this paper was to attempt to confirm the root cause of wafer damage issue by heavy Al wire wedge bonding and propose some permanent solutions for it.

The infra red–optical beam-induced resistance change (IR-OBIRCH) analysis defines the position of an abnormal hotspot. A cross section and an scanning electron microscope (SEM) confirmed the wafer damage issue and its position. Based on the position of wafer damage, the wedge tool with different life and Al buildup was checked found to be on the wedge tool. Finite element analysis (FEA) modeling analysis and simulation experiment guarantee the Al buildup, and low wedge deformation thickness (WDT) can cause the wafer damage issue. Finally, design of experiment (DOE) experiments are designed to optimize wedge tool dimension and wedge-bond parameters to eliminate wafer damage issue.

Wafer damage issue caused the Vpwr-OUTPUT leakage issue by IR-OBIRCH analysis. Al buildup was found on wedge tool with different life and its size gets larger along with the increase in wedge tool life. Low WDT and bigger Al buildup can cause the wafer damage. Designing new wedge tool and parameters optimization can increase WDT.

Because of the limitation of time and resources, finite element method (FEM) modeling and wedge tool dimension could not be studied more deeply.

This paper sets an example on how to find out the root cause of wafer damage by a step-by-step analysis and put forward a quick solution accordingly for the issue.

This paper aims to present a literature review of remote monitoring systems for water infrastructure in the Global South.

Following initial scoping searches, further examination was made of key remote monitoring technologies for water infrastructure in the Global South. A standard literature search methodology was adopted to examine these monitoring technologies and their respective deployments. This hierarchical approach prioritised “peer-reviewed” articles, followed by “scholarly” publications, then “credible” information sources and, finally, “other” relevant materials. The first two search phases were conducted using academic search services (e.g. Scopus and Google Scholar). In the third and fourth phases, Web searches were carried out on various stakeholders, including manufacturers, governmental agencies and non-governmental organisations/charities associated with Water, Sanitation and Hygiene (WASH) in the Global South.

This exercise expands the number of monitoring technologies considered in comparison to earlier review publications. Similarly, preceding reviews have largely focused upon monitoring applications in sub-Saharan Africa (SSA). This paper explores opportunities in other geographical regions and highlights India as a significant potential market for these tools.

This review predominantly focuses upon information/data currently available in the public domain.

Remote monitoring technologies enable the rapid detection of broken water pumps. Broken water infrastructure significantly impacts many vulnerable communities, often leading to the use of less protected water sources and increased exposure to water-related diseases. Further to these public health impacts, there are additional economic disadvantages for these user communities.

This literature review has sought to address some key technological omissions and to widen the geographical scope associated with previous investigations.

To document a library web site redesign from start to finish, with special attention and emphasis placed on process – what worked and what did not.

Documentation and techniques used in the redesign are discussed in depth, with special attention as to why these techniques were chosen, how they were integrated into the process, and what problems were encountered.

One of the biggest problems with a redesign is the political dimension and communication issues involved, rather than the technical problems. Deciding what testing methodology to use to gather patron input and using that input efficiently in the site design are also a challenging area.

Since this is a case study, some of the problems encountered may not be applicable to other libraries in different environments. At the same time, many of the findings relating to problems with communication are general and could apply to redesign efforts in a variety of environments.

It is hoped that this paper may serve as a foundation on which a more generic process for effecting a redesign can be developed, one that may apply to all or most redesigns in all or most libraries.

There are very few papers in the literature dealing with the process of managing a redesign – most focus on other aspects, such as skill sets or test findings.

The purpose of this paper is to contribute to the discourse on labour market discrimination by introducing an analytical process model that offers a template for the systematic analysis of discrimination within the process of labour market integration. Its usage and contribution to the field is exemplified by applying the proposed model to the case of ageism in labour market integration.

Five phases and four actors are distinguished that, added together, compose the proposed analytical process model. In the following, the model is used as an analytical framework for a mapping review, aimed at identifying and critically evaluating the vast and extensive literature on ageism in the process of labour market integration.

The paper concludes that ageism occurs in all five phases of the integration process, pinpointing potential areas for policy interventions. Furthermore, the authors conclude that the existing literature on ageism in labour market integration is fragmented, with some elements and/or actors within the process so far having received little attention.

The analytical process model developed in this paper provides the scientific community with a tool to systematise the literature, detect underlying mechanisms and uncover existing research gaps, not only for the case of ageism presented here, but for a vast variety of other –isms. In addition, policy makers, trade unions and employers can use the model to better target and tailor anti-discrimination measures in labour market integration.

The rough set concept is a new mathematical approach to imprecision, vagueness and uncertainty. This paper introduces the emergent computational paradigm and discusses its applicability and potential in rough set theory.

A conceptual discussion and approach are taken.

For accepting a system is displaying an emergent behavior, the system should be constructed by describing local elementary interactions between components in different ways of describing global behavior and properties of the running system over a period of time. The proposals of an emergent computation structure for implementing basic rough sets theory operators are also given in this paper.

The results will have an important impact on the development of new methods for knowledge discovery in databases, in particular for development of algorithmic methods for pattern extraction from data.

The purpose of this paper is to address four interrelated questions: what is the prevalence of ageism amongst employers? What are the factors conditioning employers’ age stereotypes? To what extent are ageist attitudes among employers translated into discriminatory recruitment, retention and firing practices? And what factors can moderate the stereotype–discrimination interaction?

The paper draws on a survey conducted among Danish employers; 2,525 completed the survey questionnaires; response rate 25 per cent.

The major finding is that ageist stereotypes among employers do not translate into discriminatory personnel management practices.

The findings may be specific to Denmark. Denmark is renowned to be a non-hierarchical, egalitarian society, which may have implications for personnel management practices.

Contrary to this study, most studies analysing ageist stereotypes do not assess the extent to which stereotypes are translated into discriminatory personnel management practices in the workplace.

The data protection is always a vital problem in the network era. High-speed cryptographic chip is an important part to ensure data security in information interaction. This paper aims to provide a new peripheral component interconnect express (PCIe) encryption card solution with high performance, high integration and low cost.

This work proposes a System on Chip architecture scheme of high-speed cryptographic chip for PCIe encryption card. It integrated CPU, direct memory access, the national and international cipher algorithm (data encryption standard/3 data encryption standard, Rivest–Shamir–Adleman, HASH, SM1, SM2, SM3, SM4, SM7), PCIe and other communication interfaces with advanced extensible interface-advanced high-performance bus three-level bus architecture.

This paper presents a high-speed cryptographic chip that integrates several high-speed parallel processing algorithm units. The test results of post-silicon sample shows that the high-speed cryptographic chip can achieve Gbps-level speed. That means only one single chip can fully meet the requirements of cryptographic operation performance for most cryptographic applications.

The typical application in this work is PCIe encryption card. Besides server’s applications, it can also be applied in terminal products such as high-definition video encryption, security gateway, secure routing, cloud terminal devices and industrial real-time monitoring system, which require high performance on data encryption.

It can be well applied on many other fields such as power, banking, insurance, transportation and e-commerce.

Compared with the current strategy of high-speed encryption card, which mostly uses hardware field-programmable gate arrays or several low-speed algorithm chips through parallel processing in one printed circuit board, this work has provided a new PCIe encryption card solution with high performance, high integration and low cost only in one chip.

With the advent of the era of Big Data, the scale of knowledge graph (KG) in various domains is growing rapidly, which holds huge amount of knowledge surely benefiting the question answering (QA) research. However, the KG, which is always constituted of entities and relations, is structurally inconsistent with the natural language query. Thus, the QA system based on KG is still faced with difficulties. The purpose of this paper is to propose a method to answer the domain-specific questions based on KG, providing conveniences for the information query over domain KG.

The authors propose a method FactQA to answer the factual questions about specific domain. A series of logical rules are designed to transform the factual questions into the triples, in order to solve the structural inconsistency between the user’s question and the domain knowledge. Then, the query expansion strategies and filtering strategies are proposed from two levels (i.e. words and triples in the question). For matching the question with domain knowledge, not only the similarity values between the words in the question and the resources in the domain knowledge but also the tag information of these words is considered. And the tag information is obtained by parsing the question using Stanford CoreNLP. In this paper, the KG in metallic materials domain is used to illustrate the FactQA method.

The designed logical rules have time stability for transforming the factual questions into the triples. Additionally, after filtering the synonym expansion results of the words in the question, the expansion quality of the triple representation of the question is improved. The tag information of the words in the question is considered in the process of data matching, which could help to filter out the wrong matches.

Although the FactQA is proposed for domain-specific QA, it can also be applied to any other domain besides metallic materials domain. For a question that cannot be answered, FactQA would generate a new related question to answer, providing as much as possible the user with the information they probably need. The FactQA could facilitate the user’s information query based on the emerging KG.

Cooperative work with Keio University has resulted in the development of a machine for exercising the hip and knee joints of stroke patients to recover their walking function. The Therapeutic Exercise Machine (TEM) has two mechanical arms to move the lower extremity of a stroke patient. The arms of the exercise machine are driven by electric motors and are controlled by a computer by means of load sensor information. The sensing and feedback control of force information is a problem for conventional machines and ultimately the therapist using the machine. TEM has the ability to be used as a training machine with embedded therapist techniques as well as the ability to monitor the patient’s condition during an exercise session. The machine has the following new features: wide range of motion, compliant motion, direct teaching, and measurement functions. The effects of TEM have been evaluated on its compliant motion against impulsive load and the short‐term effects of a continuous passive range of motion exercise in spastic patients.

Power management of a wireless sensor node is important and needs to be designed efficiently without wasting excessive energy. The purpose of this paper is to report on the improvement of the power management of a wireless sensor node.

The design involves the implementation of solar recharging technology with single‐ended primary inductance converter (SEPIC) on a wireless sensor node in order to achieve the improvement in power management.

The combination of the solar recharging technology with SEPIC converter shows promising results for efficiently supplying the power to the wireless sensor node.

The design idea can be extended for many other electronic sensor applications, which can help to ensure an efficient power management of the sensor nodes.

The proposed design model demonstrates a new idea towards reduction of energy usage for wireless sensor nodes.