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1 – 10 of 13Ahmad Soleymani and Alireza Toloei
The purpose of this paper is to analyze the inclusion effects of the linearized time‐varying J2‐perturbed terms for relative accuracy increase significantly over Melton's problem.
Abstract
Purpose
The purpose of this paper is to analyze the inclusion effects of the linearized time‐varying J2‐perturbed terms for relative accuracy increase significantly over Melton's problem.
Design/methodology/approach
The methodology is based on the previous studies provided by Ross's paper. He gives a set of equations based on the C‐W equations which incorporates the J2 gravitational perturbations and states in his introduction that this method can be expanded for the elliptical reference orbits as described by Melton.
Findings
One challenge in implementing the relative motions is maintaining the relations as it experiences gravitational perturbations, most notably due to non‐spherical Earth. Simulation results show that the inclusion of time‐varying J2 perturbation terms in the derived linear equations increased the accuracy of the solution significantly in the out‐of‐orbit‐plane direction, while the accuracy within the orbit plane remained roughly unchanged.
Practical implications
By reason of replacing approximate terms (e, M) in this solution, for continues accuracy increase of time‐varying parameters containing θ(t) and RO(t), this solution could be useful in the element‐errors evaluation and analysis of orbital multiple rendezvous missions, that are involved to the limited orbit periods.
Originality/value
The originality of this paper is to develop Melton's researches. He provided a method for generalizing the linear equations of motion to an elliptical orbit which enabled the determination of a time‐explicit, approximate solution. In this regard, there is no paper which has evaluated the inclusion effects of the linearized time‐varying J2 perturbation terms over Melton's equations with such an approach.
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Constructing and evaluating behavioral science models is a complex process. Decisions must be made about which variables to include, which variables are related to each other, the…
Abstract
Constructing and evaluating behavioral science models is a complex process. Decisions must be made about which variables to include, which variables are related to each other, the functional forms of the relationships, and so on. The last 10 years have seen a substantial extension of the range of statistical tools available for use in the construction process. The progress in tool development has been accompanied by the publication of handbooks that introduce the methods in general terms (Arminger et al., 1995; Tinsley & Brown, 2000a). Each chapter in these handbooks cites a wide range of books and articles on specific analysis topics.
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Throughout the past few decades a considerable philosophical literature has appeared, covering the various aspects of the history of philosophy and practically all of the…
Abstract
Throughout the past few decades a considerable philosophical literature has appeared, covering the various aspects of the history of philosophy and practically all of the systematic disciplines. Annual reports of this literature have been prepared for the past twenty years by James Collins, St. Louis University, for the Cross Currents review. These surveys are the best single source for keeping abreast of publications in the field. The collected reviews (1957–1977) are now available from Cross Currents at Dobbs Ferry, New York.
Sociology of religion is the study of the relationship between religion and culture. Sociologists focus on the nature and structure of religious organizations and movements…
Abstract
Sociology of religion is the study of the relationship between religion and culture. Sociologists focus on the nature and structure of religious organizations and movements, leadership, the effect of religious commitment on individuals and social process or social change. Central to the discipline is the search for an adequate definition of religion and for a coherent explanation of the distinction between religious myth and social reality.
E. Nicole Melton, George B. Cunningham, Jeffrey D. MacCharles and Risa F. Isard
Sport organizations increasingly emphasize their support for lesbian, gay, bisexual, transgender and queer (LGBTQ) inclusion by promoting a perfect score on the Athlete Ally…
Abstract
Purpose
Sport organizations increasingly emphasize their support for lesbian, gay, bisexual, transgender and queer (LGBTQ) inclusion by promoting a perfect score on the Athlete Ally Equality Index, partnering with nonprofits to increase awareness of LGBTQ individuals in sport (e.g. Rainbow Laces campaign), or hosting a pride night for LGBTQ fans. Despite these and similar efforts, LGBTQ fans historically have felt unwelcome in sport settings, thereby signaling the need for inclusive fan codes of conduct. The purpose of this study was to examine both the prevalence and antecedents of such policies.
Design/methodology/approach
Using publicly available data sources, the authors focused on 350 Division 1 college athletic departments in the USA.
Findings
Results illustrate factors at both the macro (i.e. institution) and meso- (i.e. athletic department) levels interact to explain whether a school will possess a fan code of conduct. Specifically, research-intensive institutions with strong gender equity are more likely to possess a code of conduct than schools that are not research oriented and have weak gender equity. This project extends the understanding of LBGTQ inclusion in the sports industry.
Originality/value
The current study is the first to examine the prevalence and predictors of LGBTQ-inclusive fan codes of conduct. Understanding these dynamics can help athletic programs that want to create safe and inclusive sport spaces for LGBTQ fans and spectators.
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Purpose – This chapter analyzes stratification in embeddedness in religious congregations, as well as the civic and political implications of this stratification in congregational…
Abstract
Purpose – This chapter analyzes stratification in embeddedness in religious congregations, as well as the civic and political implications of this stratification in congregational embeddedness.
Methodology – With data from more than 70,000 attendees of 385 congregations, I examine how race, education, and income affect the prevalence of friendships in religious congregations, and how these friendships affect civic and political activity.
Findings – Analyses of friendships show that white and lower-class Americans are particularly likely to have close friends in their congregations, and attendees are disproportionately likely to have close friends in their congregations when other attendees are of the same race and level of education. Analyses of civic and political participation show that congregational friendships are strongly associated with civic and political participation, though the positive effects of congregational friendships on civic and political participation are moderately reduced for African-Americans and lower-class attendees.
Research Implications – The findings are relevant to future research on congregational stability, stratification in access to social resources, and U.S. civil society.
Originality/Value – This research shows that the resources that accompany congregational embeddedness, like many other resources, are stratified by race, education, and income.
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Satoshi Sugahara and Gregory Boland
This study examines the perceptions of accounting faculties toward ethics education, the extent of ethics coverage and reasons why ethics should (or should not) be taught in…
Abstract
This study examines the perceptions of accounting faculties toward ethics education, the extent of ethics coverage and reasons why ethics should (or should not) be taught in Japanese tertiary schools. Data for this research was collected from faculties that primarily teach accounting in Japanese tertiary schools in 2009. The results indicate that over 90% of accounting faculties believe that ethics should be taught within the accounting curriculum. In terms of how ethics should be delivered survey participants believed in a more holistic approach, which would encompass the benefits of teaching it as both a stand-alone course and integrating it with other relevant courses. This outcome is in direct contrast to the results obtained from previous studies undertaken outside of Japan. Of particular interest was the fact that the current survey revealed that only 55.2% of respondents actually intend to incorporate ethics into their accounting courses in the foreseeable future. This research successfully adds value to the shortage of literature existing on the perceptions of ethics education among Japanese accounting faculties.
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Sreekanth M.P., Rajesh Ranganathan and Arivazhagan Pugalendhi
Laparoscopic surgeons suffer because of discomfited body posture while performing surgery and experience discomfort owing to lack of customized surgical instruments. Accordingly…
Abstract
Purpose
Laparoscopic surgeons suffer because of discomfited body posture while performing surgery and experience discomfort owing to lack of customized surgical instruments. Accordingly, this paper aims to recommend an individual customization strategy by developing an ergonomically designed laparoscopic forceps handle and thereby increase the comfort of surgeons.
Design/methodology/approach
Hand anthropometric parameters of 282 south Indian male subjects are used to customize the handle. uPrint and Objet260 Connex, which works based on fused deposition modeling and PolyJet, respectively, are used to fabricate the prototype of the handle. Design modifications include a pistol-type grip, the increased contact area between the hand and handle, and neutral wrist posture.
Findings
Ergonomic evaluation parameters such as grip, functionality, comfort and wrist posture using subjective ratings from laparoscopic surgeons were recorded and obtained average values of 4.1, 3.6, 4.1 and 4.1, respectively, based on a five-point ordinal scale. Additionally, stress analysis also confirms the safety of the handle based on von Mises stress criteria.
Research limitations/implications
Anthropometric data are limited to 282 subjects and subjective evaluation is conducted using a prototype, not the end-use product.
Originality/value
Evaluation using subjective rating confirms the ascendancy of a modified handle over the existing handle in terms of assessed parameters. The proposed individual customization strategy can be applied for other industrial hand tools to enhance comfort.
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Robert W. Rutledge, Khondkar E. Karim and Alan Reinstein
This study examines possible influences on the level of collaboration in published research by the most productive authors of accounting literature. Understanding the…
Abstract
This study examines possible influences on the level of collaboration in published research by the most productive authors of accounting literature. Understanding the collaboration tendencies of these authors should benefit early-career-stage accounting faculty. Seven factors are examined for the publications of 93 of the most productive accounting authors. These productive authors are found to include fewer coauthors on their publications early in their careers. The number of coauthors increases through their first 16 to 17 years and then decreases through the remainder of their careers. The results also indicate that productive accounting researchers include a greater number of coauthors on more recently published articles and on longer articles. Fewer coauthors are included when a productive author is affiliated with a “top-10” university or on articles published in highly ranked accounting journals. Lastly, the results show that prolific authors seek out coauthorship throughout their careers and usually include one or more coauthors on their publications. Implications from these results and specific suggestions for accounting faculty are discussed.