Electro-chemical spark machining–based hybrid machining processes: Research trends and opportunities

2018 ◽  
Vol 233 (4) ◽  
pp. 1037-1061 ◽  
Author(s):  
Ravindra Nath Yadav
Keyword(s):  
Machining Process ◽  
Future Research ◽  
Machining Processes ◽  
Hybrid Machining ◽  
New Developments ◽  
Conductive Materials ◽  
Electro Discharge Machining ◽  
And Performance ◽  
Further Development

Shaping of the difficult-to-machine non-conductive materials such as glass, quartz and ceramic is much difficult and uneconomical by existing machining processes. As a result, wide applicabilities of these materials are still limited. Even though these materials are highly required in the field of the modern industries. To overcome the problem, a new machining method has been proposed by researchers by combining the features of electro-chemical machining and electro-discharge machining. Such combined machining process is called as electro-chemical spark machining process. Such developed machining method becomes an appropriate process for machining of non-conductive materials with significant improvement in productivity as compared to the electro-discharge machining and electro-chemical machining processes. In this article, the role of electro-chemical spark machining for machining of the non-conductive materials has been summarized and focused on the future research possibilities in the same area. This article also focuses on mechanism, process and performance parameters, variants and new developments related to the electro-chemical spark machining. As a result, this review article becomes beneficial for researchers to understand the phenomena of the electro-chemical spark machining process as well as further development in the same area.

Internal projects as strategic tools: an organisation-level perspective and a research agenda

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Torbjørn Bjorvatn
Keyword(s):  
Project Management ◽  
Theory Development ◽  
Future Research ◽  
Content Type ◽  
Theoretical Contribution ◽  
Research Areas ◽  
Linear Relationships ◽  
Strategic Role ◽  
And Performance

PurposeThe purpose of this conceptual paper is to describe and explain how organisations use internal projects to implement organisation-level strategy objectives.Design/methodology/approachTheory development with an emphasis on explaining key constructs and their mutual relationships. The theoretical contribution is represented in a diagram along with a detailed verbal account.FindingsThe paper develops a dynamic, cross-level framework to illustrate the organisational processes and outcomes that determine project-based strategy implementation within a single organisation. The interplay between the base organisation and the project, and benefits realisation were singled out as key future research areas. The proposed framework engages with central discourses in the fields of project management, strategic management, innovation studies, knowledge management and organisation studies.Research limitations/implicationsOnly the contours of an organisation-level theory of strategically motivated internal projects are outlined. Future research must elaborate on the complexities, the non-linear relationships and the boundary conditions that follow from the proposed framework.Practical implicationsManagers are alerted to the strategic role of internal projects, how these projects help connect strategy and performance and what the accompanying organisational processes and outcomes look like.Originality/valueThe paper constitutes an early conceptual treatment of strategy-driven internal projects as a distinct project category, thus addressing a major knowledge gap in project studies. Organisational project-management theory is extended with suggestions for future research.

scholarly journals Empathy in Piano Duet Rehearsal and Performance: A Response to Haddon and Hutchinson

2015 ◽  
Vol 10 (1-2) ◽  
pp. 157
Author(s):  
Fred Seddon
Keyword(s):  
Verbal Communication ◽  
Original Study ◽  
Future Research ◽  
Top Down ◽  
Dual Roles ◽  
Unique Role ◽  
And Performance ◽  
The Impact ◽  
Prior Relationship

<p>This review comments upon the article entitled above. The article is well written and describes an interesting and original study. This review critiques the Method and Discussion sections of the article and offers suggestions for future research. Three specific points from the method are considered relating to: dual roles as researcher-musicians, the use of reflective diaries in research, and the impact on the research of the prior relationship between the authors. The unique role of &ldquo;written empathy&rdquo; is discussed within the context of empathic relationships. Also, this review considers how shifts from verbal to non-verbal communication may indicate movement from a &ldquo;top-down&rdquo; to &ldquo;bottom up&rdquo; response, and how this shift is related to &ldquo;empathetic attunement.&rdquo;</p>

The role of compliance for organisational change

2018 ◽  
Vol 31 (2) ◽  
pp. 334-351 ◽  
Author(s):  
Ronald Busse ◽  
Ufuk Doganer
Keyword(s):  
Qualitative Methodology ◽  
Qualitative Content Analysis ◽  
Organisational Change ◽  
Future Research ◽  
Content Type ◽  
Lively Debate ◽  
And Performance ◽  
The Individual ◽  
Depth Interviews

Purpose Fuelled by the latest scandals at Siemens, VW or Walmart, there is a lively debate on the role of compliance and ethics programmes. Unlike large corporations, small and medium-sized enterprises (SMEs) arguably tend to underestimate their significance and lag behind. Hence, the purpose of this paper is to shed light on the process of introducing compliance codes and its effects on employee acceptance and performance. Design/methodology/approach In line with the qualitative methodology, the authors conducted 12 in-depth interviews with German SME employees which the authors evaluated with the qualitative content analysis. Findings As for the major contribution, results indicate the emergence of a lack of understanding, anger, anxiety and operational performance losses – both at the individual and the corporate level – especially when employees feel uninvolved in the initial introduction stadium. Originality/value Practicing managers may benefit from the recommendation to facilitate staff involvement at earlier stages. As for theory advancement, the authors draw on Kotter’s (2007) long surviving “Eight Steps Change Management Model” and find significant support for shifting the spotlight of attention towards the first four phases. The authors discuss the original value of the research, admit limitations and illuminate some promising future research trajectories.

scholarly journals Building Sustainable Organizations in China

2015 ◽  
Vol 11 (3) ◽  
pp. 427-440 ◽  
Author(s):  
Chris Marquis ◽  
Susan E. Jackson ◽  
Yuan Li
Keyword(s):  
Economic Growth ◽  
Future Research ◽  
Research Directions ◽  
Csr Reporting ◽  
Sustainability Research ◽  
Future Research Directions ◽  
Recent Trends ◽  
And Performance ◽  
Sustainable Organizations

ABSTRACTAs China shifts its development model from focusing on economic growth at all costs to a model in which economic growth is balanced with solving pressing societal and environmental problems, there is an increasing need for management research on building sustainable organizations in China. This collection of papers focuses attention on the role of business in promoting sustainable economic development, highlighting a number of key processes including: the factors that foster transparency and CSR reporting, how stakeholders can influence corporations to abandon their CSR commitments, the benefits of environmental branding and labeling, and the antecedents and performance consequences of proactive environmental strategies. In this introductory essay we reflect on recent trends in sustainability research in China, and to encourage this important movement, provide recommendations for future research directions.

Experimental Study of the Effect of Cryogenic Treatment on the Performance of Electro Discharge Machining

2009 ◽  
Author(s):  
Murali Meenakshi Sundaram ◽  
Yakup Yildiz ◽  
K. P. Rajurkar
Keyword(s):  
Material Properties ◽  
Removal Rate ◽  
Cryogenic Treatment ◽  
Cold Treatment ◽  
Electrical Energy ◽  
Machining Process ◽  
Deep Cryogenic Treatment ◽  
Electrically Conductive ◽  
Conductive Materials ◽  
Electro Discharge Machining

Cryogenic treatment is a heat treatment process in which the specimen is subjected to an extremely low temperature of the order of −300° F and below, to cause beneficial changes in the material properties. The advantages of cryogenic treatment include relieved residual stresses, and better electrical properties. Electro discharge machining (EDM) is a well known nontraditional machining process in which electrical energy is converted to thermal energy to remove material by melting and evaporation from electrically conductive materials. The process performance of EDM is affected by several factors including the material properties. In this study, the effect of cryogenic treatment on the performance of EDM is investigated experimentally. Copper tool electrodes were subjected to two different treatment methods, namely cold treatment (around −150° F) and deep cryogenic treatment (around −300° F). Using these electrodes, experiments were conducted to study the effect of various process parameters. Significant improvement in material removal rate was observed for EDM with cryogenically treated tools. However, their effect on tool wear is only marginal.

scholarly journals How Teacher Characteristics Relate to How Teachers Use Dashboards: Results From Two Case Studies in K-12

2021 ◽  
Vol 8 (2) ◽  
pp. 6-21
Author(s):  
Anouschka van Leeuwen ◽  
Carolien A. N. Knoop-van Campen ◽  
Inge Molenaar ◽  
Nikol Rummel
Keyword(s):  
Decision Making ◽  
Case Studies ◽  
Teacher Characteristics ◽  
Specific Form ◽  
Future Research ◽  
Teacher Decision Making ◽  
And Performance ◽  
K 12 ◽  
Initial Framework

Teacher dashboards are a specific form of analytics in which visual displays provide teachers with information about their students; for example, concerning student progress and performance on tasks during lessons or lectures. In the present paper, we focus on the role of teacher dashboards in the context of teacher decision-making in K–12 education. There is large variation in teacher dashboard use in the classroom, which could be explained by teacher characteristics. Therefore, we investigate the role of teacher characteristics — such as experience, age, gender, and self-efficacy — in how teachers use dashboards. More specifically, we present two case studies to understand how diversity in teacher dashboard use is related to teacher characteristics. Surprisingly, in both case studies, teacher characteristics were not associated with dashboard use. Based on our findings, we propose an initial framework to understand what contributes to diversity of dashboard use. This framework might support future research to attribute diversity in dashboard use. This paper should be seen as a first step in examining the role of teacher characteristics in dashboard use in K–12 education.

scholarly journals Analisis gaya kepemimpinan transformasional terhadap kinerja karyawan yang dimediasi komitmen kerja

2020 ◽  
Vol 4 (2) ◽  
pp. 99-111
Author(s):  
Rahmad Hidayat ◽  
Endi Sarwoko ◽  
Andi Nu Graha
Keyword(s):  
Transformational Leadership ◽  
Quantitative Research ◽  
Employee Performance ◽  
Future Research ◽  
Work Commitment ◽  
Mediating Role ◽  
Analysis Technique ◽  
And Performance ◽  
The Relationship

The purpose of this study was to determine the effect of transformational leadership on employee performance and to analyze the mediating role of work commitment. This research is a type of quantitative research, using a questionnaire arranged with a 5 point Likert scale. The research variables consisted of transformational leadership as an exogenous variable, employee performance as an endogenous variable, and work commitment while the mediating variable. The research sample was 80 employees of PT. Kalbe Farma, Tbk. The data analysis technique uses path analysis. The results showed that transformational leadership has a direct effect on employee performance. Other findings indicate that work commitment acts as a partial mediator of the relationship between transformational leadership and employee performance. Future research can develop research by including the role of organizational culture as a factor influencing commitment and performance.

scholarly journals Impact of The HEROES Project on First Responders’ Well-Being

2020 ◽  
Vol 5 (1) ◽  
pp. 8 ◽  
Author(s):  
Daniel M. Blumberg ◽  
Luciano Giromini ◽  
Konstantinos Papazoglou ◽  
A. Renee Thornton
Keyword(s):  
First Responders ◽  
Well Being ◽  
Future Research ◽  
Psychological Resources ◽  
Trauma Symptoms ◽  
Breathing Exercises ◽  
Before And After ◽  
And Performance ◽  
The Impact

First responders experience a myriad of stressors (e.g., operational, organizational, personal) over the course of their career. An abundance of empirical evidence shows that the impact of those stressors on first responders’ health, well-being, and performance can be detrimental. Nevertheless, previous research has mainly focused on the role of a specific technique (e.g., mindfulness, breathing exercises, psychoeducation) towards the promotion of well-being among first responders. This allows us to explore the role of a single technique in supporting first responders. However, given the complexity of stressors experienced by this population, it appears that a synergistic role of multileveled intervention is imperative to promote lasting improvement in first responders’ well-being. To this end, The HEROES Project, an eight-week online training program, was developed to address the aforementioned gap in the literature. The HEROES Project incorporates lessons that aim to build a cluster of skills that together promote first responders’ wellbeing. In the present study, a sample of first responders (n = 124) from the US Midwest were recruited and completed The HEROES Project. They were assessed before and after completion of the program, and then follow-up measurements were obtained for two years following the baseline assessment. Results showed that participants with higher distress and lower psychological resources before the training benefited most from The HEROES Project, but that the training significantly improved psychological capital and reduced stress, depression, anxiety, and trauma symptoms for all participants. Clinical and training implications as well as future research directions are discussed.

scholarly journals Moderating Effect of Proactivity on Firm Absorptive Capacity and Performance: Empirical Evidence from Spanish Firms

Mathematics ◽  
2021 ◽  
Vol 9 (17) ◽  
pp. 2099
Author(s):  
Rafael Sancho-Zamora ◽  
Isidro Peña-García ◽  
Santiago Gutiérrez-Broncano ◽  
Felipe Hernández-Perlines
Keyword(s):  
Absorptive Capacity ◽  
Structural Equation ◽  
Business Performance ◽  
Equation Model ◽  
Future Research ◽  
Learning Capability ◽  
Proactive Behaviour ◽  
Innovation Capacity ◽  
And Performance

The purpose of this study was to understand how proactivity can affect the relationship between absorptive capacity and organisational performance. Most previous studies have ignored the role of proactivity in this relationship and have not considered the multidimensional nature of absorptive capacity. A questionnaire was sent to 800 CEOs of Spanish companies from different sectors, procuring a response rate of 38.25%. A structural equation model was applied to test the hypothesis. This study confirms the positive effect that absorptive capacity has on business performance and the moderating role of proactivity in this relationship. Companies that develop their capacity to absorb information from the environment achieve better results. Furthermore, if they engage in proactive behaviour within their company, this relationship is stronger. Future research should include more capacities that are related to knowledge and business performance (i.e., learning capability, innovation capacity, etc.). This study contributes to the understanding of how to manage a company’s knowledge in an appropriate way. It sheds new light on how knowledge management should be conducted, emphasising not only the gathering of information but also the promotion of a proactive attitude on the part of employees to achieve the goal of better performance.

Electrical arc machining: Process capabilities and current research trends

2019 ◽  
Vol 233 (15) ◽  
pp. 5190-5200 ◽  
Author(s):  
Pankaj Kumar Shrivastava ◽  
Shrihar Pandey ◽  
Shivam Dangi
Keyword(s):  
Removal Rate ◽  
Machining Process ◽  
Advanced Materials ◽  
Future Research ◽  
Machining Processes ◽  
Workpiece Material ◽  
Electrical Arc ◽  
Control Factors ◽  
Conductive Ceramics ◽  
Unconventional Machining

Electrical arc machining is the thermal energy-based unconventional machining process, which utilizes energy of arc to melt and vaporize workpiece material. Electrical arc machining has the capability to machine advanced materials such as metal matrix composites, superalloys, and conductive ceramics effectively. The process is considered to be efficient than most of the other unconventional machining processes in terms of the material removal rate. But it has got limitations because it results in a very poor surface finish. Tool wear rate, recast layer formation, surface and subsurface cracks, and geometrical inaccuracy are other limitations up to a certain extent. In this paper, the comprehensive review of research carried out so for in the area of electrical arc machining has been presented. The paper discusses the detailed experimental and theoretical studies done on electrical arc machining to elucidate the effects of various input control factors on different quality characteristics. The paper also contains modeling and optimization studies done so far in electrical arc machining and finally discusses the future research possibilities in the area.

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