Search results
11 – 20 of 134Tien Phuc Dang, Zhengqi Gu and Zhen Chen
The purpose of this paper is to gain a better understanding of the flow field structure around the race car in two cases: stationary wheel and rotating wheel. In addition, this…
Abstract
Purpose
The purpose of this paper is to gain a better understanding of the flow field structure around the race car in two cases: stationary wheel and rotating wheel. In addition, this paper also illustrates and clarifies the influence of wheel rotation on the aerodynamic characteristics around the race car.
Design/methodology/approach
The author uses steady Reynolds-Averaged Navier-Stokes (RANS) equations with the Realizable k-ε model to study model open-wheel race car. Two cases are considered, a rotating wheel and stationary wheel.
Findings
The results obtained from the study are presented graphically, pressure, velocity distribution, the flow field structure, lift coefficient (Cl) and drag coefficient (Cd) for two cases and the significant influence of rotating case on flow field structure around wheel and aerodynamic characteristics of race car. The decreases in Cd and Cl values in the rotating case for the race car are 16.83 and 13.25 per cent, respectively, when compared to the stationary case.
Originality/value
Understanding the flow field structures and aerodynamic characteristics around the race car in two cases by the steady RANS equations with the Realizable k-ε turbulence model.
Details
Keywords
Leobardo Diosdado and Donald Lacombe
The objective of this paper is to examine whether the financial satisfaction (FS) of a state’s residents is affected by the funding ratio of the state’s public pension.
Abstract
Purpose
The objective of this paper is to examine whether the financial satisfaction (FS) of a state’s residents is affected by the funding ratio of the state’s public pension.
Design/methodology/approach
A multilevel hierarchal probit model that control for the funding ratio at the state level and its resident’s FS at the individual level was used to determine how a one-unit increase in funding ratio of a state’s pension plan affected the degree of FS experienced by the individual residing within that state.
Findings
The marginal effect from the probit model estimated suggest that a state’s pension plan funding ratio does affect the degree of FS experienced by its residents.
Research limitations/implications
This study only examined data from 2015, thus, future research should consider examining this question via longitude studies, perhaps a survivor model.
Practical implications
States that fail to address their pension plan’s funding ratio may be exposing their residents to negative externality that could potentially influence an individual’s choice to relocate to another state that is not facing similar issues.
Originality/value
To the best of authors’ knowledge, the current body of research has yet to address and/or research the externalities associated with the underfunding of public pension plans throughout the USA. This paper combined two unique sets of publicly available data from all 50 states along with a sample of its residents to examine how public policy associated with state and/or local government pension affect its residents.
Details
Keywords
Logistics service providers (LSPs) may invest a lot of time in tenders unsuccessfully, as they do not meet the expectations of logistics service users (LSUs). In order to help…
Abstract
Purpose
Logistics service providers (LSPs) may invest a lot of time in tenders unsuccessfully, as they do not meet the expectations of logistics service users (LSUs). In order to help them classify and target their customers more efficiently and effectively and make logistics outsourcing more successful for both LSUs and LSPs, this paper analyzes underlying dimensions of criteria German manufacturing and trading companies actually use in selecting an LSP and clusters of LSUs based on these dimensions.
Design/methodology/approach
A questionnaire survey with 110 manufacturing and 135 trading companies was conducted in Germany. Principal component analysis (PCA), cluster analysis, multivariate analysis of variance, analysis of variance and discriminant analysis were performed on the sample data.
Findings
PCA revealed eight dimensions of LSU criteria in selecting LSPs and that cost alone seems not decisive. Based on these dimensions, cluster analysis produced nine LSU groups. These groups differ the most in the selection criteria dimensions cost-performance ratio, operational collaboration, quality and locations. Recommendations for servicing these groups are given. The two largest groups, which make up 43.5%, seem not that demanding and price sensitive. The selection criteria dimensions and LSU groups enable LSPs to classify and target their customers more efficiently and effectively, to evaluate and develop their core competencies, and contribute to successful logistics-outsourcing relationships.
Originality/value
This research is the first to examine selection criteria dimensions and resulting clusters of German manufacturing and trading companies in order to make logistics outsourcing more successful.
Details
Keywords
The purpose of this chapter is to identify specific instructional strategies to help English language learners develop literacy skills. Potential difficulties in areas of…
Abstract
The purpose of this chapter is to identify specific instructional strategies to help English language learners develop literacy skills. Potential difficulties in areas of decoding, vocabulary, and fluency are explored along with suggestions to implement effective instruction. The intention of this chapter is not to be a research document, but a pragmatic guide for educators of English language learners. Through reflective practice and backed by research, I walk readers through classroom and professional development scenarios and also present ways to effectively support the emerging literacy skills of English language learners. Readers will be presented with research-based instructional methods shown to enhance crucial early literacy skills for English language learners along with practical suggestions for teachers to put research into practice in the classroom. Scenarios and research-based practices illuminate how to effectively work with English language learners. Research-based evidence is presented, showing that English language learners go through the same developmental milestones as native English-speaking students, but may require some additional modifications along with explicit instruction. The chapter describes how teachers can build foundational reading skills for English language learners, something that is crucial for later academic success.
Details
Keywords
This chapter presents the survey of selected linear and mixed integer programming multi-objective portfolio optimization. The definitions of selected percentile risk measures are…
Abstract
This chapter presents the survey of selected linear and mixed integer programming multi-objective portfolio optimization. The definitions of selected percentile risk measures are presented. Some contrasts and similarities of the different types of portfolio formulations are drawn out. The survey of multi-criteria methods devoted to portfolio optimization such as weighting approach, lexicographic approach, and reference point method is also presented. This survey presents the nature of the multi-objective portfolio problems focuses on a compromise between the construction of objectives, constraints, and decision variables in a portfolio and the problem complexity of the implemented mathematical models. There is always a trade-off between computational time and the size of an input data, as well as the type of mathematical programming formulation with linear and/or mixed integer variables.
Details
Keywords
To examine the utility of multiple reading speeds during rereadings toward enhancing comprehension and application of subsequently gained knowledge.
Abstract
Purpose
To examine the utility of multiple reading speeds during rereadings toward enhancing comprehension and application of subsequently gained knowledge.
Design/methodology/approach
Representations of slow, mindful reading as well as analyses of eye training and speed reading techniques are described to serve as the theoretical foundation for the meta-strategy – read fast, read slow (RF/RS).
Findings
This meta-strategy encompasses aspects of rereading, eye training exercises, and speed reading; it is derived from a cognitive concept that a blueprint can be formed from reading at an increased speed from one’s normal speed. Further, the gaps along with that information which was not fully understood from the initial reading can be secured by following the initial fast read with a slower than normal reading of the text. The idea is to refine that which is important versus unimportant (main idea vs. details), and enhance the surface level of understanding into one that is critical and analytical after having been confronted against existing schematic notions.
Practical implications
Concepts of text structure, word reading automaticity, and content interest are natural by-products of using the RF/RS strategy. Together, these benefits allow for holistic growth and moreover, provide successful reading experiences. Successful reading prompts additional reading, as it has been widely established that better readers read more often and more widely.
Details
Keywords
Martin Schaurhofer and Markus F. Peschl
Empowerment describes the processes of how to gain and increase autonomy and self‐determination in one's own environment. Typical examples for empowerment processes can be found…
Abstract
Purpose
Empowerment describes the processes of how to gain and increase autonomy and self‐determination in one's own environment. Typical examples for empowerment processes can be found in: citizen's initiatives, human rights movements, and other social movements or self help groups. This paper shows that empowerment processes have to be understood as “knowledge processes”. A link between empowerment and the methods of knowledge management will be established. It is inspired by Heinz von Foersters ideas of self‐regulated processes in nervous systems.
Design/methodology/approach
In a first step the concept of empowerment will be presented. Secondly, it will be shown which role knowledge is playing in this context. In the last part practical implications of these considerations will be discussed.
Findings
The motivation for engaging in civil society issues is heavily dependent on personal knowledge and on the abilities to access knowledge resources. A constructivist paradigm turns out to be fertile. Discovering one's own strengths, constructing solutions, testing them in the personal context and environment, as well as reflecting these processes are the starting points for developing a constructivist perspective on empowerment processes.
Practical implications
Coaching empowerment processes in a knowledge‐oriented framework can focus on the construction of personal strength, can create space for experimental action and also for reflecting on social and political processes. This provides opportunities for exchange of experiences and fosters second‐order views.
Originality/value
H.v.Foerster's concepts on change and autonomy are the foundation for this constructivist approach to empowerment. This could be a helpful approach for supporting affected people in every empowerment process.
Details
Keywords
Farah Mulyasari and Rajib Shaw
This chapter illustrates local responses to disaster and highlights the potential role of three community-based society organizations (CBSOs) – women’s groups, youth groups, and…
Abstract
This chapter illustrates local responses to disaster and highlights the potential role of three community-based society organizations (CBSOs) – women’s groups, youth groups, and religious groups – as risk communicators in Bandung, Indonesia. A framework is modeled for CBSOs’ risk communication process in bridging the gap between the local government and the community. A set of indicators in social, economic, and institutional resilience activities (SIERA), with a scope of 45 disaster risk reduction (DRR) activities covering three different disaster periods was developed to characterize the process of the delivery of risk information by these CBSOs through their activities at subdistrict and ward levels. The data were collected through a questionnaire survey method using the SIERA approach. Each CBSO leader in a ward was surveyed about their perceptions of these 45 ongoing SIERA activities and their risk information source and dissemination process. Statistical analysis was applied to determine the relationship between variables such as periods of disaster and types of SIERA activities and its attributing factors (location, population, and dynamic of organizations in their locale) in finding variations of risk communication activity that may function for communities. Five risk communication processes of the CBSOs are identified; when their perceptions and ongoing activities are compared, activities such as dissemination of disaster risk information, conveying early warnings to their peers, and involvement of the local government have been carried out by these CBSOs. This indicates that CBSOs’ activities already have a certain degree of risk communication embedded in the communities. The results confirm that these CBSOs, through their social networks, can become active agents of change and bridge the communication gap between government and community. Thus, CBSOs’ risk communication provides the opportunity to contribute to the overall resilience-building and disaster risk reduction as part of people-centered actions and local responses to disasters.
Details
Keywords
Margaret L. McBeath, Maureen T. B. Drysdale and Nicholas Bohn
Mental illness amongst students in higher education has increased in recent years. Several contributing factors have been identified, including the growing number of students with…
Abstract
Mental illness amongst students in higher education has increased in recent years. Several contributing factors have been identified, including the growing number of students with pre-existing problems who are pursuing university and the fact that emerging adulthood is a time of developmental vulnerability to social pressures. Other key factors include academic pressure, the financial burden of student debt, and increasing uncertainty around making a successful transition to the workplace. These pressures are often more pronounced for minority students – in particular ethnic and sexual minority students. Peer support and connectedness to school have been identified as key areas for building protective factors for positive mental health outcomes and lower rates of health-risk behaviors. Many higher education institutions also offer work-integrated learning programs (WIL) to help ease students’ financial burden and increase their level of employability. However, participation in WIL may impact on students’ academic and social support networks. For instance, programs in which students participate in off-campus work placements (i.e., cooperative education) can cause disruption in students’ connectedness to school and their perceived level of social support. This chapter examines the intensification of mental health problems on campus and explores the importance of sense of belonging and social support as protective factors. Furthermore, the chapter explores how WIL can both protect and hinder students’ mental health and wellbeing and examines current evidence for interventions that can help students prepare for their school-to-work transition.
Details