Search results

The nose radii of cutting inserts are normally measured using a profile projector or toolmaker's microscope. Since only a sector of a circle is available for the measurement using such instruments, the radii determined from these methods are inaccurate. The purpose of this paper is to present an alternative method of determining the nose radii more accurately using machine vision.

The 2D images of the cutting inserts were captured using a CCD camera with the aid of back lighting. The tool nose center in each digitized image was located based on the tool geometry. The curved nose profile was transformed into a linear profile using polar‐radius transformation. The nose radius was then varied within ten pixels of the nominal radius and the average deviation from a straight line profile in the nose region in the polar‐radius plot was evaluated. The radius corresponding to the minimum average deviation is identified as the most accurate radius value.

For the 15 simulated images of cutting inserts tested, the error in radii determine by the proposed method varied from −4.9 to 3.7 percent. But, the radii were about 9 to 22 percent higher than those measured using the profile projector on commercially available inserts. The radii measured using the profile projector was closer to the nominal radii with an average deviation of −3.2 percent compared to those measured using the proposed method.

The cutting inserts must be clean and free from dust particles when capturing the images; and the insert must be aligned accurately so that the plane of the nose profile is perpendicular to the optical axis of the CCD camera.

The proposed method can be used to determine the nose radii accurately. If the exact nose radius of an insert is known, the tool path can be programmed precisely to obtain high‐dimensional accuracy in the finished product.

The paper shows how a new method of determining the tool nose radii of cutting inserts more accurately compared to the conventional methods, based on a sector of the nose profile, has been developed.

The purpose of this paper is to investigate the relationship between leader-member exchange (LMX), job satisfaction (JS), life satisfaction (LS), and psychological capital (PC) for employee relation management.

A total of 319 valid questionnaires were received from employees of financial and electronics manufacturing industries in Taiwan, and they were then analyzed using a structuring equation model with SPSS 12.0 and LISREL 8.8.

Good LMX increases psychological capital. Psychological capital enhances both JS and LS, and psychological capital serves as a full mediator for both JS and LS. A moderating effect of industrial characteristics is found between LMX and LS and between psychological capital and LS.

The findings suggest that managers need to focus on leadership style in order to develop employees’ life and JS through building psychological capital.

This study not only obtained further support for predictions derived from the LMX theory but was also a more extensive analysis of the meaningful relationships between job and LS with a mediating effect of psychological capital on employee relation management.

The purpose of this paper is to examine the evolution of collaboration among researchers in Library Hi Tech based on the co-authorship network analysis.

The Library Hi Tech publications were retrieved from Web of Science database between 2006 and 2017. Social network analysis based on co-authorship was analyzed by using BibExcel software and a visual knowledge map was generated by Pajek. Three important social capital indicators: degree centrality, closeness centrality and betweenness centrality were calculated to indicate the co-authorship. Cohesive subgroup analysis which includes components and k-core was then applied to show the connectivity of co-authorship network of Library Hi Tech.

The results indicated that around 42 percent of the articles were written by single author, while an increasing trend of multi-authored articles suggesting the collaboration among researchers in librarian research field becomes popular. Furthermore, the social network analysis identified authorship network with three core authors – Markey, K., Fourie, I. and Li, X. Finally, six core subgroups each included six or seven tightly connected researchers were also identified.

This study contributed to the existing literature by revealing the co-authorship network in librarian research field. Key researchers in the major subgroup were identified. This is one of the limited studies that describe the collaboration network among authors from different perspectives showing a more comprehensive co-authorship network.

Presents over sixty abstracts summarising the 1999 Employment Research Unit annual conference held at the University of Cardiff. Explores the multiple impacts of globalization on work and employment in contemporary organizations. Covers the human resource management implications of organizational responses to globalization. Examines the theoretical, methodological, empirical and comparative issues pertaining to competitiveness and the management of human resources, the impact of organisational strategies and international production on the workplace, the organization of labour markets, human resource development, cultural change in organisations, trade union responses, and trans‐national corporations. Cites many case studies showing how globalization has brought a lot of opportunities together with much change both to the employee and the employer. Considers the threats to existing cultures, structures and systems.

The purpose of this paper is to identify associations amongst organizational justice, supervisory justice, authoritarian culture, organization-employee relationship quality and employee turnover intention.

An online survey (n=300) was conducted in South Korea.

Organizational justice and supervisory justice are positively associated with organization-employee relationship quality, while authoritarian organizational culture is negatively associated with it. In addition, there is a positive association between authoritarian organizational culture and turnover intention. Organizational justice and organization-employee relationship quality are negatively associated with turnover intention.

This study contributes to the lack of research on organization-employee relationship quality as a predictor of employee turnover intention and a mediator between authoritarian organizational culture and turnover intention.

This review provides an overview of the applications of Bambara groundnuts in various food products. The genetic diversity, physical properties and chemical compositions of the crop are also elucidated.

This paper critically reviewed the physicochemical properties and applications of Bambara groundnuts from recent literature.

Bambara groundnut (Vigna subterranea) is a drought-tolerant crop from West Africa that contains not only carbohydrates and fats but is also high in protein. The cultivars of Bambara groundnut can be distinguished by the colours of seeds, which range from red, blue-eye, brown and black-eye. Bambara groundnuts contain carbohydrate (57–67%), protein (15–25%), fat (4–8%), fibre (1.4–1.5%) and ash (2.9–4%). As a percentage of protein, the essential amino acids, lysine, methionine and cysteine are relatively high in Bambara groundnuts. Meanwhile, linoleic, palmitic and linolenic acids are the fatty acids present in this crop.

Several studies have shown that Bambara groundnuts can be used as fat substitutes, emulsifiers, water binders, bulking agents and thickeners due to its water and oil absorption properties, gelling, pasting, emulsifying and foaming abilities. Bambara groundnuts are used in the development of many intermediate or final products like flour blend, cookies, bread and fermented milk. It has a positive impact on the overall proximate, functional, mineral and amino acid profiles of the food products.

Despite its high nutrient density, Bambara groundnuts are an underutilised legume due to unavailability and lack of knowledge among consumers on its benefits. There is a need to promote the use of Bambara groundnuts as a future food.

Discusses research ideas on the distinctions between data, information and knowledge, the categories of knowledge and knowledge‐processing activities in Holsapple and Whinston’s (HW’s) taxonomy (1987, 1988a, 1988b), and their application to markets and the activities of the firm. Describes a manufacturing firm’s inputs, production processes and outputs in terms of HW’s taxonomy, pointing out that management must filter the information surrounding the firm to turn it into knowledge of various types, e.g. descriptive, derived, assimilative etc. Considers the role of information for customers of and investors in the firm; and the relationship between knowledge and efficiency. Identifies three types of knowledge workers (builders, stewards and appliers) and calls for further research on the taxonomy of knowledge and standards of knowledge within the finance discipline.

Therefore, this study aims to explore the relationships among OC, KS, OCB and OI “Organization” is often seen as a company and few studies pay much attention to tribes and other related organizations and communities of Indigenous peoples. However, Indigenous peoples production organizations (IPPOs) would be certainly influenced by factors from the internal/external, including organizational culture (OC), organizational citizenship behavior (OCB), knowledge sharing (KS) and organizational innovation (OI). Therefore, this study aims to explore the relationships among OC, KS, OCB and OI.

Based on valid 139 Indigenous workers in IPPOs, this study used structural equation modeling to validate the relationships among OC, OCB, KS and OI.

The empirical findings indicate that OC would significantly influence OCB and OI, whereas KS would not have significant impact on OI. In addition, OC would not influence KS as usual, whereas OCB would do. Finally, OCB would impact KS.

As OCB acts as a complete mediator in OC–KS relationship, it means that these IPPOs already have OCB to motivate their staffs to do KS, but not enough to achieve more excellent performance on innovation.

Compared to past studies, this study aims to investigate the theory of organizational behavior and whether it is suitable between general businesses and IPPOs.

This paper aims to empirically test individual, team and multi-level relationships among knowledge sharing (KS), leader–member exchange (LMX), employee creativity (EC) and team innovation (TI). The study tests how KS affects EC via LMX at lower and multi levels. At a higher level, how creativity affects TI is also tested.

Questionnaires were sent to 43 team leaders and 215 team members from the largest theme park in Taiwan, E-DA, who are engaged in offering creative and innovative customer services. Multilevel analysis was conducted based on the questionnaires received.

Major findings agree the contention that KS can improve EC via LMX at both employee and multi-level. The results also indicate that KS affects team creativity (TC) at the team level; however, TC and TI do not have a significant positive relationship.

The study examined how to enhance employees’ creativity from the individual and team levels in a theme park, an area with rare literature. The authors found that LMX is an important mediator between KS and EC. The mediated effect of KS on EC through LMX is higher in a cross level than individual level. In addition, a team’s KS has more effect on EC than the individual level.

Fiber-reinforced armor-grade polymer-matrix composite materials with a superior penetration resistance are traditionally developed using legacy knowledge and trial-and-error empiricism. This approach is generally quite costly and time-consuming and, hence, new (faster and more economical) approaches are needed for the development of high-performance armor-grade composite materials. One of these new approaches is the so-called materials-by-design approach. Within this approach, extensive use is made of the computer-aided engineering (CAE) analyses and of the empirically/theoretically established functional relationships between an armor-grade composite-protected structure, the properties of the composite materials, material microstructure (as characterized at different length-scales) and the material/structure synthesis and fabrication processes. The paper aims to discuss these issues.

In the present work, a first step is made toward applying the materials-by-design approach to the development of the armor-grade composite materials and protective structures with superior ballistic-penetration resistance. Specifically, CAE analyses are utilized to establish functional relationships between the attributes/properties of the composite material and the penetration resistance of the associated protective structure, and to identify the combination of these properties which maximize the penetration resistance. In a follow-up paper, the materials-by-design approach will be extended to answer the questions such as what microstructural features the material must possess in order for the penetration resistance to be maximized and how such materials should be synthesized/processed.

The results obtained show that proper adjustment of the material properties results in significant improvements in the protective structure penetration resistance.

To the authors’ knowledge, the present work is the first reported attempt to apply the materials-by-design approach to armor-grade composite materials in order to help improve their ballistic-penetration resistance.