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1 – 10 of over 3000Gao Xian‐Zhong, Hou Zhong‐Xi, Guo Zheng, Zhu Xiong‐Feng, Liu Jian‐Xia and Chen Xiao‐Qian
The purpose of this paper is to propose a methodology to determine the designing parameters for solar powered high‐altitude, long‐endurance (HALE) unmanned aerial vehicles (UAV).
Abstract
Purpose
The purpose of this paper is to propose a methodology to determine the designing parameters for solar powered high‐altitude, long‐endurance (HALE) unmanned aerial vehicles (UAV).
Design/methodology/approach
By depicting solar power distribution on earth, along with the efficiencies analysis of photo‐voltaic cells (P‐cell) and lithium‐sulfur battery (LS‐battery), the influence of energy to concept design parameters is analyzed first. Second, the lift efficiency is determined from ground to 20 km for HALE UAV. Third, the methodology to determine design parameters for HALE UAV is generalized by analyzing the carrying ability of some famous HALE UAVs, such as Zephyr, Helios, and so on.
Findings
Energy is the key constraint on design of HALE UAV. The questions about where HALE UAVs are capable of operating and how long they could work can be answered according to power density distribution on earth. The total mass of HALE UAV can be divided into two parts: one is the constant mass, the other is the mass increasing with area of wing. The total mass can be estimated by the former one; the later one plays an important role in estimating wing load in the designing process.
Practical implications
The only way to enhance carrying ability of HALE UAVs is to redistribute their wing load: lighter structure materials and a better method to fix P‐cell with lighter fundus are the key technologies to enhance HALE UAVs’ carrying ability. At current technological levels, it is not easy to design a UAV to achieve the aim of high‐altitude long‐endurance.
Originality/value
This paper presents a very efficient and convenient method to determine the designing parameters of HALE UAV.
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This chapter offers a reading of the inclusion of Susan Glaspell's short story, A Jury of Her Peers, in the casebook, Procedure. What does it mean that the editors turn to a…
Abstract
This chapter offers a reading of the inclusion of Susan Glaspell's short story, A Jury of Her Peers, in the casebook, Procedure. What does it mean that the editors turn to a secular, literary narrative to ground a consideration of “The Problem of Judgment?” How should we read the irony of the reading instructions they provide, which reproduce the blindness to form – to the significance of “trifles” – that the text describes? How do we read literature in the context of law? More specifically, what does attention to the form of the story yield for an understanding of legal judgment?
N. Baldock and M.R. Mokhtarzadeh‐Dehghan
Aims to present a methodology for analysing a solar‐electric, high‐altitude, long‐endurance, unmanned aircraft.
Abstract
Purpose
Aims to present a methodology for analysing a solar‐electric, high‐altitude, long‐endurance, unmanned aircraft.
Design/methodology/approach
The study focuses on the aerodynamics, flight performance and power requirements of a heavier‐than‐air, solar‐electric, HALE UAV. The methodology is founded on using an analytical approach to determine the power required to undertake various flight manoeuvres. An analytical approach is also undertaken in determining the intensity of the solar radiation available to the aircraft. Finally to demonstrate the methodology, a HALE concept was generated and evaluated.
Findings
When using estimates of current solar‐electric propulsion and energy conversion efficiencies, the HALE concept was only able to sustain year round, level flight up to latitudes of 10°N.
Research limitations/implications
Further analysis needs to be undertaken into the effect of altitude on the intensity of solar radiation, which could be as much as 25 per cent higher at an altitude of 21.3 km (70,000 ft). Further study into this subject area may provide proof that sustained flight is possible at more northerly latitudes.
Originality/value
This paper provides a simple methodology for persons wishing to undertake an initial feasibility study of a solar‐electric HALE concept.
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William R. McLucas, Laura S. Wertheimer, Andrea J. Robinson, Mary Jo Johnson, Thomas W. White, Jonathan D. Rosenfeld, Michael R. Dube and Arian M. June
The purpose of this paper is to recommend proactive measures that companies should take to manage reports of securities violations under the SEC's new whistleblower program.
Abstract
Purpose
The purpose of this paper is to recommend proactive measures that companies should take to manage reports of securities violations under the SEC's new whistleblower program.
Design/methodology/approach
The paper explains the whistleblower bounty program and recommends ten proactive measures that companies should consider.
Findings
Companies have an incentive to investigate reports of potential violations quickly while also ensuring compliance with the anti‐retaliation protections.
Practical implications
Companies should take steps now to bolster internal reporting and investigative procedures and encourage employees to utilize internal reporting mechanisms.
Originality/value
The paper provides expert advice from experienced securities and financial services lawyers.
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Planning, organising, co‐ordinating, commanding and controlling – these are the elements of management according to Henri Fayol. Less known, but no less important, are Fayol’s…
Abstract
Planning, organising, co‐ordinating, commanding and controlling – these are the elements of management according to Henri Fayol. Less known, but no less important, are Fayol’s principles of management. Fayol was born in 1841 and died in 1925. His Administration Industrielle et Générale was published in French in 1916 but was not translated into English until 1929. Fayol’s work is often quickly rejected either because of its age or because it is believed to have been superseded by observational findings. However, Fayol’s work was based on observation. This paper considers some contemporary models of management (Hales, Kotter, Mintzberg) and argues that Fayol’s elements of management are not refuted but are rather reinforced by more recent findings. The paper concludes that Fayol’s work stands the test of time. The five elements of management and 14 principles of management are briefly presented.
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Concerns a study by Manchester City Transport (MCT) which attempts to break away from conventional methodology involving merely traffic engineering and cost of reduction schemes…
Abstract
Concerns a study by Manchester City Transport (MCT) which attempts to break away from conventional methodology involving merely traffic engineering and cost of reduction schemes. Indicates that even for an area predominantly populated by business executives, a significant demand can exist for public transport innovations, specifically designed to meet consumer needs. Represents part of a wider marketing study sponsored by MCT. Concludes that this study has thrown some light on to those and other questions, but as it has already been recognised, time and financial constraints have limited its scope.
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Paul M. Architzel, Dan M. Berkovitz, Gail Bernstein, Seth Davis and Ted Serafini
To analyze the differences between the SEC’s newly adopted final business conduct rules for security-based swap dealers and major security-based swap participants under Section…
Abstract
Purpose
To analyze the differences between the SEC’s newly adopted final business conduct rules for security-based swap dealers and major security-based swap participants under Section 15F(h) of the Securities Exchange Act of 1934 and the parallel rules promulgated under the Commodity Exchange Act by the CFTC with respect to swap dealers and major swap participants.
Design/methodology/approach
This article discusses select rules under each regulatory regime and highlights the major differences and potential effects of each.
Findings
This article concludes that while the SEC’s intent was to harmonize its final rules with the parallel CFTC rules, there are substantive differences between the two sets of rules that firms should consider when deciding how to structure their security-based swap dealer activities.
Originality/value
This article contains insightful analysis of the newly adopted SEC Business Conduct Rules and highlights some of the ways firms will likely be affected moving forward.
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David A. Hales and Gail S. Hales
The purpose of this article is to help acquaint librarians with some of the major resources available regarding Fetal Alcohol Syndrome and Fetal Alcohol Effects (FAS/FAE).
Jeff Hale, Allen Reesor and Reni John
Faith-based nonprofit organizations often do not track the transformational outcomes of programs because these outcomes are considered intangible and difficult to quantify. Bible…
Abstract
Faith-based nonprofit organizations often do not track the transformational outcomes of programs because these outcomes are considered intangible and difficult to quantify. Bible League International’s (BLI) Board of Directors commissioned the development of an instrument to assess the transformative impact of BLI’s programs. This was accomplished in collaboration with the Metadigm Group. From field interviews and from relevant literature, three measurement domains emerged: Program Participant Outcomes, Worker Capacity and Affiliation, and Program Function. In pilot tests, qualitative methods were used to refine the instrument. Due to time and budgetary restraints, the project ended prior to conducting reliability studies. This case study presents factors driving faithbased nonprofits to measure transformational outcomes, exposes some of the methodological challenges in accessing transformational outcomes, and provides an approach to developing an instrument to quantify transformational outcomes