3,681 research outputs found

    Institutional, policy and regulatory framework for sustainable development of the Egyptian aquaculture sector

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    This report presents the findings of a mission to critically review the institutional, policy and regulatory framework for sustainable development of the Egyptian aquaculture sector. The study was undertaken by an International Expert on Aquaculture Policy, and a National Expert on Institutions, on behalf of the Project “Improving Employment and Income through the Development of Egypt’s Aquaculture Sector“, implemented by WorldFish and CARE, and funded by the Swiss Agency for Development and Cooperation(SDC). The objective of the mission was to assess the current status of the Egyptian aquaculture sector, in terms of the policy, legal and institutional environment, with a view to suggesting the major issues to be addressed within a future policy dialogue

    Construction informatics in Turkey: strategic role of ICT and future research directions

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    Construction Informatics deals with subjects ranging from strategic management of ICTs to interoperability and information integration in the construction industry. Studies on defining research directions for Construction Informatics have a history over 20 years. The recent studies in the area highlight the priority themes for Construction Informatics research as interoperability, collaboration support, intelligent sites and knowledge sharing. In parallel, today it is widely accepted in the Architecture/Engineering/Construction (AEC) industry that ICT is becoming a strategic asset for any organisation to deliver business improvement and achieve sustainable competitive advantage. However, traditionally the AEC industry has approached investing in ICT with a lack of strategic focus and low level of priority to the business. This paper presents a recent study from Turkey that is focused on two themes. The first theme investigates the strategic role of ICT implementations from an industrial perspective, and explores if organisations within the AEC industry view ICT as a strategic resource for their business practice. The second theme investigates the ‘perspective of academia’ in terms of future research directions of Construction Informatics. The results of the industrial study indicates that ICT is seen as a value-adding resource, but a shift towards the recognition of the importance of ICT in terms of value adding in winning work and achieving strategic competitive advantage is observed. On the other hand, ICT Training is found to be the theme of highest priority from the academia point of view

    A General Precipitation-Limited L_X-T-R Relation Among Early-Type Galaxies

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    The relation between X-ray luminosity (L_X) and ambient gas temperature (T) among massive galactic systems is an important cornerstone of both observational cosmology and galaxy-evolution modeling. In the most massive galaxy clusters, the relation is determined primarily by cosmological structure formation. In less massive systems, it primarily reflects the feedback response to radiative cooling of circumgalactic gas. Here we present a simple but powerful model for the L_X-T relation as a function of physical aperture R within which those measurements are made. The model is based on the precipitation framework for AGN feedback and assumes that the circumgalactic medium is precipitation-regulated at small radii and limited by cosmological structure formation at large radii. We compare this model with many different data sets and show that it successfully reproduces the slope and upper envelope of the L_X-T-R relation over the temperature range from ~0.2 keV through >10 keV. Our findings strongly suggest that the feedback mechanisms responsible for regulating star formation in individual massive galaxies have much in common with the precipitation-triggered feedback that appears to regulate galaxy-cluster cores.Comment: Submitted to ApJ, 9 pages, 3 figures (v2 fixes a few small typos

    The homeobox in vertebrate development.

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    http://dx.doi.org

    Clubbing in Dubai: The Making of a “Party Capital”

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    The aim of this chapter is to assess the changing identity of the city of Dubai to becoming a hub of party entertainment in the Middle East. In 2012, Lonely Planet, named Dubai and Tel Aviv “today’s party capitals of the Middle East.” The juxtaposition of these two very different cities in the Lonely Planet’s world ranking of “Ultimate Party Cities” testifies to the transformation of Dubai’s identity in recent years. Israel has already had a reputation of a party outpost in the region thanks to, among others, a number of music festivals organized there (Best Festivals in Israel, Secret Tel Aviv. Retrieved October 23, 2018 from https://www.secrettelaviv.com/best-festivals-in-israel, n.d.), hence the inclusion of its capital in the ranking testifies to a long-standing tradition of entertainment. But Dubai, thanks to “the swank bars and clubs of the Middle East’s most decadent desert getaway,” (Lonely Planet, Ultimate Party Cities. Retrieved March 1, 2018 from https://www.lonelyplanet.com/travel-tips-and-articles/ultimate-party-cities/40625c8c-8a11-5710-a052-1479d2777622, 2012) has grown its party reputation in the last decade and in the ranking, has outwon Beirut, a top contender traditionally known to be the party capital of the Arab world. This rapid transformation of Dubai’s identity is thus especially interesting to analyze.This study will look in detail into the development of Dubai’s clubbing entertainment, particularly into the growth of the electronic music scene, from the point of view of the development of tourism industry. Electronic music has become in the last decades a global phenomenon, widely popularized on all continents and a major money generating business.This research was conducted collecting data on the ground from nightclubs and through the analysis of their websites and local news starting from 2015. In addition, the researcher conducted semi-structured interviews with Dubai Brand Manager in 2016 and music producers involved in the clubbing scene in Dubai in 2018. The study builds also upon my past findings about the development of tourism in the Arabian Gulf region

    Transitional Adaptation model for facilitating technology and expertise mobilisation in Gulf AEC Organisations

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    The fragmented nature of the Architecture, Engineering, and Construction (AEC) industry is well recognised, the main issues of which relate to failures in communication, process, productivity and interoperability. These failures have contributed to an increased proliferation of adversarial relationships between the different parties involved in projects, the result of which have deleteriously affected projects. Challenges include a range of issues, from the veracity of design information throughout the project lifecycle, through to supply chain communication. These are global issues. For example, in the Gulf States, the nature and complexity of AEC projects has changed significantly due to increased globalisation and the emergence of enmeshed transnational practices. This has created an overwhelming reliance on the mobilisation and transfer of technology/expertise of professional expatriates, which has influenced the approach taken to traditional design and construction business models, including staff roles and procedures. New knowledge and ways of working are needed to support future projects in the Gulf States. There is also a requirement to capture and codify domain-specific expertise. This paper discusses the need to enhance Qatar’s AEC industry by fostering a smooth transition from its current position, into a more sustainable [replicable] state. The philosophical underpinnings of this paper take into account disparate socio-cultural, environmental and economic impacts of change, in terms of business models, technology, innovation, labour market needs, local laws/bylaws, and legislation. A theoretical growth model is presented for discussion. This builds on the experience of the UK (in particular) in terms of facilitating the mobility and penetration of technology/expertise/change in the AEC sectors. This paper presents a series of recommendations needed to develop a Pervasive Transnational Adaptation model for Qatar and the Gulf States, covering such issues as: ICT adoption, agile project management, technology-transfer, innovation, offsite construction, Public Private Partnerships, capacity building, and international strategic alliances

    Attraction between like-charged colloidal particles induced by a surface a density - functional analysis

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    We show that the first non-linear correction to the linearised Poisson-Boltzman n (or DLVO) theory of effective pair interactions between charge-stabilised, co lloidal particles near a charged wall leads to an attractive component of entro pic origin. The position and depth of the potential compare favourably with rec ent experimental measurementsComment: 12 pages including 2 figures. submitted to physical review letter

    THE AUTODESTRUCTION OF PEPSIN IN RELATION TO ITS IONIZATION

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    1. Evidence is presented that pepsin is a univalent acid with a value for pK of 6.85 (or a base, with pK 7.39). 2. The autodestruction of the pepsin is shown to be dependent in part upon an instantaneous irreversible change occurring in the ionized form of the enzyme (if it be an acid) or in the unionized form (if it be a base). 3. A further progressive autodestruction of pepsin at any given hydrogen ion concentration and temperature is defined by the mass law equation for a monomolecular reaction 4. The velocity of autodestruction of pepsin is directly proportional to the hydroxyl ion concentration. It is much less in the range of hydroxyl ion concentration from pOH 9.89-7.7, than in the range greater than pOH 7.7. In both of these ranges variations in pK with pOH may be represented by straight lines
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