27,451 research outputs found

    A method for tailoring the information content of a software process model

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    The framework is defined for a general method for selecting a necessary and sufficient subset of a general software life cycle's information products, to support new software development process. Procedures for characterizing problem domains in general and mapping to a tailored set of life cycle processes and products is presented. An overview of the method is shown using the following steps: (1) During the problem concept definition phase, perform standardized interviews and dialogs between developer and user, and between user and customer; (2) Generate a quality needs profile of the software to be developed, based on information gathered in step 1; (3) Translate the quality needs profile into a profile of quality criteria that must be met by the software to satisfy the quality needs; (4) Map the quality criteria to set of accepted processes and products for achieving each criterion; (5) Select the information products which match or support the accepted processes and product of step 4; and (6) Select the design methodology which produces the information products selected in step 5

    Space Generic Open Avionics Architecture (SGOAA) reference model technical guide

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    This report presents a full description of the Space Generic Open Avionics Architecture (SGOAA). The SGOAA consists of a generic system architecture for the entities in spacecraft avionics, a generic processing architecture, and a six class model of interfaces in a hardware/software system. The purpose of the SGOAA is to provide an umbrella set of requirements for applying the generic architecture interface model to the design of specific avionics hardware/software systems. The SGOAA defines a generic set of system interface points to facilitate identification of critical interfaces and establishes the requirements for applying appropriate low level detailed implementation standards to those interface points. The generic core avionics system and processing architecture models provided herein are robustly tailorable to specific system applications and provide a platform upon which the interface model is to be applied

    OEXP Analysis Tools Workshop

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    This publication summarizes the software needs and available analysis tools presented at the OEXP Analysis Tools Workshop held at the NASA Langley Research Center, Hampton, Virginia on June 21 to 22, 1988. The objective of the workshop was to identify available spacecraft system (and subsystem) analysis and engineering design tools, and mission planning and analysis software that could be used for various NASA Office of Exploration (code Z) studies, specifically lunar and Mars missions

    Regulatory reforms in selected EU network industries

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    In the course of the 1990s, the EU has embarked on an ambitious regulatory reform programme for a number of European network industries, such as telecommunications, energy and transport. This paper analyses the potential benefits of successful reforms in these sectors with a focus on the price effects of regulatory reforms. Following a review of the existing empirical literature in this field, the paper discusses the evolution of the current regulatory framework for network industries in the EU. An empirical analysis of the main determinants of recent price developments in these industries provides evidence that regulatory reform measures had a substantial downward impact on prices in the four sectors under review.Network Industries, Panel Data, Price effects, Regulatory Reforms.

    Field test of multi-hop image sensing network prototype on a city-wide scale

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    Open Access funded by Chongqing University of Posts and Telecommuniocations Under a Creative Commons license, https://creativecommons.org/licenses/by-nc-nd/4.0/Wireless multimedia sensor network drastically stretches the horizon of traditional monitoring and surveillance systems, of which most existing research have utilised Zigbee or WiFi as the communication technology. Both technologies use ultra high frequencies (mainly 2.4 GHz) and suffer from relatively short transmission range (i.e. 100 m line-of-sight). The objective of this paper is to assess the feasibility and potential of transmitting image information using RF modules with lower frequencies (e.g. 433 MHz) in order to achieve a larger scale deployment such as a city scenario. Arduino platform is used for its low cost and simplicity. The details of hardware properties are elaborated in the article, followed by an investigation of optimum configurations for the system. Upon an initial range testing outcome of over 2000 m line-of-sight transmission distance, the prototype network has been installed in a real life city plot for further examination of performance. A range of suitable applications has been proposed along with suggestions for future research.Peer reviewe

    Competition in financial services

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    In the financial services sector, the failure of a single institution can have a compounding effect on the sector, and on national and global economies. In particular, there is systemic risk from inter-institution lending, and this effect is more complex in Australia due to the small number of major players. In retail banking in Australia, following a similar practice in most developed countries, if an unsecured creditor is a retail depositor, their deposit is insured by the government. That is, if a retail bank fails, the Federal Government will make the depositors whole. The regulatory system, particularly the prudential regulatory system, is designed to protect depositors’ and borrowers’ interests, and this protects the interest of the government. The effect is that regulatory policy on banking has prioritised stability in consideration of the sovereign risk associated with the risk of retail bank failure. However, this approach also creates a policy dilemma. The dilemma concerns the extent to which the retail banking sector can attain the benefits of the vigorous rivalry from effective and efficient competition, without unduly risking stability and the potential of a devastating call on the public purse. Specifically, in the context of effective and efficient competition, there is limited competitiveness in retail banking in Australia. This is reflected in the static state of market share between the four major banks, and very slow and marginal improvements gains even by strong second tier competitors. Furthermore, the retail banking sector’s capacity for product and service innovation is limited. Although the absence of vigorous rivalry is conducive to stability within the retail banking sector, it is likely to detract from the welfare of retail banking consumers. Furthermore, the level of innovation may not be as high as is feasible and barriers, including prudential regulatory barriers to entry or expansion, mean that the extent of rivalry is unlikely to change without some form of promotion of competition. The paper consequently makes a four-point recommendation for the removal of the ‘four pillars’ policy:  The four major banks are protected by an implicit government guarantee that impacts market operation with little observable benefit to consumers, and may be a source of consumer disutility.  The four pillars policy has prompted increased vertical integration within the sector, particularly in the area of mortgage products.  There are sufficient merger protections provided by Part IV of the Competition and Consumer Act 2010 (Cth).  Competition and contestability arise when there are reasonably low barriers to entry and exit from the sector. It is not clear that low barriers to entry exist in Australia, and evidence to support this view comes from the failure of international banks to gain a significant toehold in the retail banking sector in Australia. One deterrent to entry is the regulatory focus on the four pillars. The authors recognise that this position is at odds with the view of the Financial System Inquiry. However, the rationale in the report of the Inquiry was to prevent mergers, and the current competition law achieves this objective. The paper recommends two specific policies to promote competition in retail banking without the structural intervention that would otherwise be required to improve the intensity of competition in the retail banking sector:  Introduce bank account number portability. This would use ‘know your customer’ and central database systems in a similar form to those that have been used for mobile number portability in Australia for the last decade and a half.  Introduce customer access to data held by banks to allow third parties to compare bank offerings across all banks.  Significantly, these two recommendations are consistent with the productivity proposals issued by the UK Government in July 2015. The research paper also examines crowd equity funding as a disruptive force in the banking sector, and recommends that crowd equity funding be permitted with the following safeguards:  ASIC should take an active role in monitoring crowd equity funding and be willing to sue in case of fraudulent action.  Any intermediary online platform should have a financial services licence with limited duty of care.  There should be a cap for business raisings through crowd equity funding of $2 million in a 12-month period.  Crowd equity funding is a social phenomenon. Through its use of social media, it has attracted people who have previously never been interested in investing in companies. Instead of being feared, this interest should be nurtured through the promotion of investors’ financial education
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