Search results
1 – 10 of 534F. Cala and R. Reynolds
Stencil cleaning has become both more difficult and more critical for modern surface mount technology. There is an increasing need for cleaning agents for stencils which are…
Abstract
Stencil cleaning has become both more difficult and more critical for modern surface mount technology. There is an increasing need for cleaning agents for stencils which are effective, safe for workers and safe for the environment. This paper describes a new laboratory test which was developed for predicting the performance of stencil cleaning formulations. A new aqueous, inorganic based cleaning agent has been developed which gives cleaning performance which was overall better than that of IPA. Testing was performed over a range of solder pastes. This performance advantage was confirmed with commercial stencil cleaning equipment. In addition to being very effective, this inorganic based stencil cleaner offers significant environmental and worker safety advantages.
B. Mahanthesh, T. Brizlyn, SabirAli Shehzad and Gireesha B.J.
The nonlinear density thermal/solutal fluctuations in the buoyancy force term cannot be ignored when the temperature/concentration difference between the surface and fluid is…
Abstract
Purpose
The nonlinear density thermal/solutal fluctuations in the buoyancy force term cannot be ignored when the temperature/concentration difference between the surface and fluid is large. The purpose of this paper is to investigate the nonlinear density fluctuations across a flowing fluid with heat mass transfer effects on a non-axial rotating plate. Therefore, the impact of nonlinear convection in the flow of Casson fluid over an oscillating plate has been analytically investigated.
Design/methodology/approach
The governing equations are modeled with the help of conservation equations of velocity, energy and concentration under the transient-state situation. The dimensional governing equations are non-dimensionalized by utilizing non-dimensional variables. Later, the subsequent non-dimensional problem has been solved analytically using Laplace transform method.
Findings
The effects of thermal Grashof number, solute Grashof number, nonlinear convection parameters, Casson fluid parameter, unsteady parameter, Prandtl number as well as Schmidt number on hydrodynamic, thermal and solute characteristics have been quantified. The numeric data for skin friction coefficient, Nusselt number and Sherwood number are presented. It is established the nonlinear convection aspect has a significant influence on heat and mass transport characteristics.
Originality/value
The effect of nonlinear convection in the dynamics of Casson fluid past an oscillating plate which is rotating non-axially is investigated for the first time.
Details
Keywords
Jafar Hasnain, Zaheer Abbas, Mariam Sheikh and Shaban Aly
This study aims to present an analysis on heat transfer attributes of fluid-particle interaction over a permeable elastic sheet. The fluid streaming on the sheet is Casson fluid…
Abstract
Purpose
This study aims to present an analysis on heat transfer attributes of fluid-particle interaction over a permeable elastic sheet. The fluid streaming on the sheet is Casson fluid (CF) with uniform distribution of dust particles.
Design/methodology/approach
The basic steady equations of the CF and dust phases are in the form of partial differential equations (PDEs) which are remodeled into ordinary ones with the aid of similarity transformations. In addition to analytical solution, numerical solution is obtained for the reduced coupled non-linear ordinary differential equations (ODEs) to validate the results.
Findings
The solution seems to be influenced by significant physical parameters such as CF parameter, magnetic parameter, suction parameter, fluid particle interaction parameter, Prandtl number, Eckert number and number density. The impact of these parameters on flow field and temperature for both fluid and dust phases is presented in the form of graphs and discussed in detail. The effect on skin friction coefficient and heat transfer rate is also presented in tabular form. It has been observed that an increase in the CF parameter curtails the fluid velocity as well as the particle velocity however enhances the heat transfer rate at the wall. Furthermore, comparison of the numerical and analytical solution is also made and found to be in excellent agreement.
Originality/value
Although the analysis of dusty fluid flow has been widely examined, however, the present study obtained both analytical and numerical results of power law temperature distribution in dusty Casson fluid under the influence of magnetic field which are new and original for such type of flow.
Details
Keywords
Marta B. Calás and Linda Smircich
Since the late 1980s we’ve been inspired by feminist theorizing to interrogate our field of organization studies, looking critically at the questions it asks, at the underlying…
Abstract
Since the late 1980s we’ve been inspired by feminist theorizing to interrogate our field of organization studies, looking critically at the questions it asks, at the underlying premises of the theories allowing for such questions, and by articulating alternative premises as a way of suggesting other theories and thus other questions the field may need to ask. In so doing, our collaborative work has applied insights from feminist theorizing and cultural studies to topics such as leadership, entrepreneurship, globalization, business ethics, issues of work and family, and more recently to sustainability. This text is a retrospective on our attempts at intervening in our field, where we sought to make it more fundamentally responsive to problems in the world we live in and, from this reflective position, considering how and why our field’s conventional theories and practices – despite good intentions – may be unable to do so.
Details
Keywords
Gabriel Babatunde Iwasokun, Richard Olufemi Akinyede, Catherine Folake Fadamiro and Oniyide Alabi Bello
The purpose of this paper is to propose indices that were freely considered as relevant for the analysis of financial crime-related issues in Nigeria and list them in the…
Abstract
Purpose
The purpose of this paper is to propose indices that were freely considered as relevant for the analysis of financial crime-related issues in Nigeria and list them in the questionnaire that was administered across the six geo-political zones of the country to obtain relevant data that are useful for factor analysis of financial crime-related issues.
Design/methodology/approach
The research methodology involved data survey, preparation and normalization. Followed by principal component analysis-based factor analysis and then, results and interpretation.
Findings
The results of factor analysis placed high premium on government policies and regulations, responses and management, capacity building and awareness and litigation as the major issues for safe and secure financial system in Nigeria. Findings from the research also established that systemic ways of ensuring that citizens adopt technical know-how for national development rather than committing crimes should be introduced and enforced by the Nigerian government.
Originality/value
The research formulated some indices and established some models for the analysis.
Details
Keywords
Postmodernism presently enjoys some following in organizational studies. However, a close examination of some of the main postmodernist contributions to organizational studies…
Abstract
Postmodernism presently enjoys some following in organizational studies. However, a close examination of some of the main postmodernist contributions to organizational studies shows that they suffer from many damaging problems. Accordingly, organizational studies should not utilize the postmodernist approach.
Denise Kwan and Libi Shen
The purpose of this case study was to explore senior librarians’ perceptions of successful leadership skills in the 21st century. The data gathered from 10 senior library leaders…
Abstract
The purpose of this case study was to explore senior librarians’ perceptions of successful leadership skills in the 21st century. The data gathered from 10 senior library leaders consisted of demographic information and responses to six open-ended interview questions. From the NVivo 10 analysis, several significant themes emerged regarding successful library leadership skills in the 21st century at two levels: foundational and interpersonal. At the foundational level, technical and knowledge skills form the building blocks for the next level of interpersonal skills. Persuasion and collaborative skills are interwoven with these interpersonal skills, both of which are at the core of the postindustrial paradigm of leadership. These two levels of skills, with an emphasis on persuasion skills, should form the basis of succession planning programs for next generation librarians. Implementing such programs could lead to increased leadership diversity, greater job satisfaction, improved job performance and effectiveness, all of which help retain librarians and ease staff shortages. Further studies are recommended.
Details
Keywords
Beverly Dawn Metcalfe, Yasmeen Makarem and Fida Afouni
This chapter address how critical feminist organization studies can shed light on the dominance of masculinist logics in TM theorizing in both theory and practice and open up…
Abstract
This chapter address how critical feminist organization studies can shed light on the dominance of masculinist logics in TM theorizing in both theory and practice and open up opportunities to review TM systems that stress inclusion and equity. The exclusive approach is most worrisome given that contemporary events such as the prosecution of Harvey Weinstein the global ‘#metoo campaigns and the Sustainable Development Goals have highlighted the importance of equality agendas. We draw on transnationalism, intersectionality and postcolonialism approaches to illustrate how TM reinforces inequalities. Our contribution questions the elite logics, and the white Global North males that dominate both TM theorizing, and TM practitioners and denies many stakeholders voices and contributions to organization life. We also question the longevity of the elite mantra of MNCs’ HRM policy given that the Sustainable Development Goals are increasingly being advocated by the business community, and contradict entirely an organizational ethic premised on valuing the elite.
Shahrokh Shakerin, Seyed Nematollah Moosavi and Abbas Aminifard
The present study aims at quantifying the likely impacts of an environmental tax on macroeconomic variables and pollution in Iran.
Abstract
Purpose
The present study aims at quantifying the likely impacts of an environmental tax on macroeconomic variables and pollution in Iran.
Design/methodology/approach
The computable general equilibrium model, which allows the prediction of the economy-wide effects of any change in policy instruments, is applied.
Findings
The main findings reveal that gross domestic product, private consumption and income in both urban and rural areas will follow a declining trend as a result of environmental tax imposition. In a scenario with the highest level of tax, the predicted percentage change to the gross domestic product and private consumption is estimated at −21.32 and −40.96, respectively. In the same scenario, pollution emissions would decrease by 12.4–22.6% for CO2, CH4 and N2O.
Originality/value
This study uses a general equilibrium model to examine the effects of the carbon tax on environmental issues and household welfare, considering the unique conditions and regulations of Iran. While the related literature examines the CO2 tax, the current study covers more pollutants, including CO2, CH4, N2O, CO, SO2 and NOx. In addition, a distinguishing feature of the current study is that it applies a modified version of the social accounting matrix (SAM) database, which includes the heavy subsidies of energy products. Another significant feature of the current study is that it examines tax policy while tax rates are exerted endogenously (compared to previous studies).
Details