1,721,390 research outputs found
Evaluating the Cultural Heritage and landscape of Quseir - Qift Road: with a special focus on the gold mines and greywacke quarries
Full text linkThe study is divided into two parts preceded by an introduction and entailed by a conclusion as follows:
Part I: Archaeological Survey of Quseir – Qift road
This part is divided into two chapters surveying the road and the ports flanking the road between the Nile and the Red Sea.
Chapter I: sheds the light on the hydreumata along the Quseir (Myos Hormos) - Qift (Coptos) road which are:
Bir Nakhil, Dawwi, Bir Sayyala, Bir al Hamara, Al – Zarqa (Maximianon), Bir Fawakhir (Persou II), Bir Hammamat (Persou I), El Muwayh “Krokodilo” and Qusur El Banat.
Chapter II: deals with the ancient port network between the Nile and the Red Sea due to the importance of the Myos Hormos road in the ancient times as the shortest road linking the Nile port of Coptos (Qift) with the Red Sea port of Myos Hormos (Quseir) in addition to the role played by the ancient port of Saww (Mersa Gawasis) from the Pharaonic Perod till the 2nd century AD.
Part II: Cultural Heritage Values of the Quseir - Qift road
This part is divided into three chapters underlining the different heritage values along the Coptos – Myos Hormos road.
Chapter III: underlines the gold mines and the value of gold in Ancient Egypt, the evolution of gold extraction in Bir Umm Fawakhir along the different historical phases from the Pre - dynastic period till the Ptolemaic and Roman – Byzantine era and the impact of this activity on creating the settlement that was once inhabited by the miners.
Chapter IV: studies the greywacke (Bekhen stone) quarries and the development of quarrying techniques through the analysis of the numerous inscriptions left by the members of the various expeditions sent to extract this stone in the greywacke mountain of Wadi Hammamat. These textual evidences helped in rendering the various Quarrying phases starting with the Extraction process upon the arrival to the quarry till the Transportation towards the destination on the Nile valley passing by the Logistics that once regulated the work of large - numbered expeditions in the desert such as the distribution of goods, food and other necessities for the workers and the water supply in addition to the cultic and the religious aspects of the region.
Chapter V: represents the valorization of the heritage value of Coptos – Myos Hormos road through elaborating a number of arguments related to the life of the road that forms a pass towards the realization of a desert road archaeology study. This part of the study includes some proposed ideas towards the ideal use of the potentials of the surveyed areas from the tourism point of view promoting new itineraries and developing projects that may participate as a possible a solution due to the recent status of tourism in Egypt
Financial stress dynamics in the MENA region: evidence from the ArabSpring
No full textIn this paperwe analyse the impact of instability caused by the Arab Spring on the co-movements and volatility spillovers of aggregated Financial Stress Indices for eight MENA countries. Using a dynamic frequency connectedness framework,we conclude that stress transmission between markets is higher at low frequencies than at high frequencies, which implies that MENA markets are slow in adjusting to the information they receive. The Global Financial Crisis generated stronger spillover effects between MENA markets than the political turmoil of the Arab Spring. These results are useful for investors with different investment horizons, and have policy implications for the maintenance of financial stability in this region
Low-pressure plasma treatments for cleaning metallic heritage artefacts
Full text linkL'abstract è presente nell'allegato / the abstract is in the attachmen
Volatility and return connectedness of cryptocurrency, gold, and uncertainty: Evidence from the cryptocurrency uncertainty indices
Full text linkThis paper examines the dynamic connectedness of return- and volatility spillovers among cryptocurrency index (CRIX), Gold, and uncertainty measures. Apart from traditional uncertainty measures, we also consider two novel uncertainty measures: Cryptocurrency Policy Uncertainty and Cryptocurrency Price Uncertainty indices. We observe that cryptocurrency policy uncertainty is the main transmitter of the return spillovers to other variables. In addition, Gold is a net receiver of both the return and the volatility spillovers. These results are valid under bearish, bullish, and normal market conditions. Our findings contribute to the literature considering the spillover effect between cryptocurrencies and other assets and their determinants
Determinants of spillovers between Islamic and conventional financial markets: exploring the safe haven assets during the COVID-19 pandemic
Full text linkWe analyse the impact of the COVID-19 pandemic on the spillovers between conventional and Islamic stock and bond markets. We further analyse comparatively whether gold, oil, Bitcoin prices, and the risk measures VIX and EPU indexes affect the relationships between these different markets during the COVID-19 pandemic outbreak. The results show that the Islamic bonds (Sukuk) demonstrate safe haven properties during this pandemic crisis, while the spillovers between conventional and Islamic stock markets become stronger during the pandemic outbreak. COVID-19, Oil and gold are strong predictors of the conventional-Islamic markets spillovers, while Bitcoin is not a significant determinant of these relationships
HandMECH—Mechanical hand prosthesis: Conceptual design of a two degrees-of-freedom compliant wrist
No full textA compliant wrist joint is important for positioning the hand in different positions to perform various daily tasks. It is also important that the wrist is able to achieve sufficient range of motion (RoM). The RoM is determined by classifying the daily activities and the most critical applications. This study presents kinematical, structural and kinetic analyses of the conceptual design of a wrist joint in mechanical hand prosthesis: HandMECH. Kinematic and kinetic analyses are carried out to determine the design parameters of the wrist to handle daily activities. Structural analyses is performed to evaluate the stress distributed over the critical part of the wrist and show that the design with a mass of 50 g satisfies the applied boundary condition
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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