121 research outputs found
Tag Sultan
No full textPROJECT NAME: TAG SULTAN
PRJECT SITE: West of the intersection of ring roda is located with cairo-suze road
OWNER: Madinet nasr housing
Consultant: MOHARM-PAKHOM
CONTRACTOR: Misr engineering development
PROJECT TOTAL AREA: 3337200 METER
TOTAL COST: 91 MILLION L
ABET Accreditation: An Engineering Experience from Sultan Qaboos University, Oman
No full text[EN] The Accreditation Board for Engineering and Technology (ABET) accredits
college and university programs in engineering under the Engineering
Accreditation Commission (EAC). The process follows Engineering Criteria
(EC) 2000, which focuses on outcomes (what is learned) rather than what is
taught. This paper presents an overview of the processes developed by the
civil engineering (CE) program at Sultan Qaboos University to satisfy ABET
Criteria 2, 3, and 4. The program had a successful accreditation visit in
November 2013. Program educational objectives (PEOs) were developed. A
review and revision process for PEOs was also developed. ABET student
outcomes (SOs) were adopted by the CE program. SOs were broken into
outcome elements. Key performance indicators were developed for each
outcome element, according to the six levels of Bloom’s taxonomy for
cognitive domain. The process used direct indicators from student work as
well indirect survey instruments. The program has developed a detailed and
systematic approach for assessment of SOs with feedback and follow-up on
implementation of actions for continuous improvement. Planning for the next
accreditation cycle of SO assessment proved valuable, as the new
accreditation committee started executing an already laid out work plan.Hassan, H.; Al-Jabri, K. (2016). ABET Accreditation: An Engineering Experience from Sultan Qaboos University, Oman. En 2nd. International conference on higher education advances (HEAD'16). Editorial Universitat Politècnica de València. 269-277. https://doi.org/10.4995/HEAD16.2015.2691OCS26927
Molecular dynamics studies of the structure–dynamics relationship in concentrated nonaqueous electrolytic solutions
No full textEnergy storage is essential for maintaining power grid stability while integrating diverse sources of energy, e.g., nuclear, renewable, and others. Such diversity of sources is essential for energy security. The solution phase of electrolytes provides the medium for ionic charge transport between the electrodes of electrochemical systems used in energy storage. The chemically-specific equilibrium spatial distribution of ionic species in electrolytic solutions, and the chemical equilibrium that exists between dissociated and associated charged entities are the main challenging factors contributing to the lack of a universal description for electrolytes properties in terms of microscopic molecular properties, and we need a system (or class of systems)-specific collective descriptors through which we can understand and guide the design of liquid electrolytes with desirable properties. Understanding the physical and electrochemical rate processes occurring in the bulk of concentrated nonaqueous electrolytic solutions is a major step towards the control and design of electrochemical systems, e.g., nonaqueous redox flow batteries which are indispensable part of a sustainable power grid . Herein, a combination of computational molecular dynamics carried by myself, Hossam Farag, and conductance measurements and experimental SAXS provided by our collaborators (Dr. Ilya Shkrob, Dr. Tao Li, Dr. Susan Odom, and Lily Robertson), is used to probe the dynamics of nonaqueous electrolytic solutions as a varying function of the battery state of charge (SOC) and the electrolyte concentration.
Two solutions were compared: one containing metal cation electrolyte prone to form rigid hetero-charge network, and the other containing phenothiazine organic catholyte preferring softer homo-radical stacking. For the latter, conductivity data show that a faster charge transport is present at high electrolyte concentrations. This difference in behavior becomes less pronounced as the concentration is lowered and absent in the dilute limit. Our findings indicate enhanced dynamics in terms of bulk ionic conductivity driven by a softer medium-range emergent homo-radical stacking structure as revealed by the MD simulations results.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-12-01The student, Hossam Farag, accepted the attached license on 2020-12-11 at 16:25.The student, Hossam Farag, submitted this Thesis for approval on 2020-12-11 at 16:36.This Thesis was approved for publication on 2020-12-14 at 08:42.DSpace SAF Submission Ingestion Package generated from Vireo submission #16124 on 2022-01-12 at 13:02:48Made available in DSpace on 2022-01-12T22:51:32Z (GMT). No. of bitstreams: 5
FARAG-THESIS-2020.pdf: 10340919 bytes, checksum: cd904f438da4ac92223b5ba7c93a07ee (MD5)
Appendix.tex: 17922 bytes, checksum: a6c4521b5a32ed3583d104808de02765 (MD5)
thesis-ex.tex: 65954 bytes, checksum: cc5930bee2afc81ae9749ccb291f7781 (MD5)
thesisbib.bib: 99274 bytes, checksum: 695a0d44fb3c74f2870be89dab316d32 (MD5)
LICENSE.txt: 4209 bytes, checksum: 12cdd6ad64e36b6a96c72488965fe184 (MD5)
Previous issue date: 2020-12-14Embargo set by: Seth Robbins for item 121161
Lift date: 2024-01-12T22:51:46Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 121161
Lift date: 2024-01-12T22:53:32Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 121161
Lift date: 2024-01-12T22:54:14Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 121161
Lift date: 2024-01-12T22:55:09Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 121161
Lift date: 2024-01-12T22:56:20Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemAuthor requested closed access (OA after 2yrs) in Vireo ETD systemLimite
IoT-Based Crowd Management Framework for Departure Control and Navigation
No full textThis paper exploits crowdsensing to propose a novel IoT-Based Vehicle Crowd Management (IoT-VCM) framework. By efficiently managing vehicle departures and navigation, the IoT-VCM clears the network in a shorter time, while maintaining the network at low congestion levels to reduce the average travel time. To compromise between these conflicting objectives, the proposed system encompasses two subsystems that work in harmony, namely; the Travel-Time System-Optimum Navigation (TTSON) and the Vehicle Departure Control (VDC). The IoT-VCM uses different network sensory devices (connected vehicles and smartphones) to collect network information that is fused to compute the current road state conditions, based on which, the VDC determines the allowable vehicle departure rates, and the TTSON optimizes their navigation. The proposed system is developed in a microscopic traffic simulator and tested on a calibrated simulated real network. The IoT-VCM controller is compared to the state-of-the-art techniques reported in the literature, namely the dynamic time-dependent incremental user-optimum traffic assignment.Manuscript received March 6, 2020; revised October 6, 2020; accepted December 7, 2020. Date of publication December 31, 2020; date of current version February 12, 2021. This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) under Grant RGPIN-2019-05667. The review of this article was coordinated by Prof. Jian Weng. (Corresponding author: Ahmed Elbery.) Ahmed Elbery and Hossam S. Hassanein are with the School of Computing, Queen's University, Ontario, Kingston K7L 3N6, Canada (e-mail: [email protected]; [email protected]).Scopu
On-site wind powered hydrogen refuelling stations: From national level to a case study in Germany
No full textHydrogen refueling stations are an important part of the infrastructural development that should be developed in order to realize a 100% sustainable economy for the future. Most of the refueling stations are located within urban areas but there are many located outside urban areas or in remote areas. Hydrogen could either be transported to these sites or being locally produced with integrated sustainable energy systems. In this study the potential number for wind powered hydrogen refueling stations using GIS is determined. Furthermore the amount of hydrogen that could be produced and used is determined via energy system simulation. Finally the hydrogen production and dispensing costs are calculated.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Energy Technolog
Methods and analysis tools for human mobility study, based on mobile network signaling data
No full textCette thèse a pour but d’étudier les activités humaines à travers l’analyse du flux de signalisation du réseau cellulaire de données (GTP). Pour ce faire, nous avons mis en place un ensemble d’outils nous permettant de collecter, stocker et analyser ces données de signalisation. Ceci en se basant sur une architecture indépendante au maximum des constructeurs de matériel. À partir des données extraites par cette plateforme nous avons fait trois contributions.Dans une première contribution, nous présentons l’architecture de la plateforme de capture et d’analyse de la signalisation GTP dans un réseau d’opérateur. Ce travail a pour but de faire l’inventaire des différents éléments déclenchant des mises à jour et aussi d’estimer la précision temporelle et spatiale des données collectées. Ensuite, nous présentons une série de mesures, mettant en avant les caractéristiques principales de la mobilité humaine observées au travers de la signalisation mobile (le temps inter-arrivées des messages de mise à jour, la distance observée des sauts entre cellules lors des déplacements des clients). Finalement, nous présentons l’analyse des compromis qui ont été faits entre la rapidité d’écriture/de lecture et la facilité d’usage du format de fichier utilisé lors de l’échange d’informations entre les sondes de capture et le système stockage. Deuxièmement, nous avons été capables de mettre en place un algorithme de reconstitution de trajets. Cet algorithme permet, à partir de données éparses issues du réseau cellulaire, de forger des trajets sur les voies de transport. Il se base sur les données des trajets sous-échantillonnées et en déduit les positions du client sur les voies de communication. Nous avons mis en place un graphe de transport intermodal. Celui-ci porte sur le métro, le train et le réseau routier. Il connecte les différents points entre eux dans chacune des couches de transport et interconnecte les modes de transport entre eux, aux intersections. Notre algorithme se base sur un modèle de chaîne de Markov cachée pour placer sur le graphe les positions probables des individus entre les différentes observations. L’apport de ce travail est l’utilisation des propriétés topologiques du réseau de transport afin de renseigner les probabilités d’émission et de transition dans un modèle non supervisé. Ces travaux ont donné lieu à une publication et à un brevet. Finalement, notre dernière contribution utilise les données issues de la signalisation à des fins de dimensionnement du réseau mobile d’opérateur. Il s’agit de dimensionner dynamiquement un réseau mobile en utilisant les bandes de fréquences dites vTV-Whitespace. Ces bandes de fréquences sont libérées sous certaines conditions aux USA et soumises à vente aux enchères. Ce que nous proposons est un système basé sur un algorithme de qualité d’expérience (QoE) et sur le coût de la ressource radio afin de choisir où déployer des femtocells supplémentaires et où en supprimer en fonction des variations de population par unité d’espace. En conclusion, cette thèse offre un aperçu du potentiel de l’analyse des metadata de signalisation d’un réseau dans un contexte plus général que la simple supervision d’un réseau d’opérateurThe aim of this thesis is to study human activities through the analysis of the signaling flow in cellular data network (GTP). In order to achieve this goal, we implemented a set of tools allowing us to collect, store and analyze this signaling data. We created an architecture independent at most of hardware manufacturers and network operators. Using data extracted by this platform we made three main contributions. In our first contribution, we present the GTP capture and analysis platform in a mobile operator network. This work intends to list the different elements triggering updates and to estimate the temporal and spatial accuracy of the data collected. Next, we present a set of measures that represent the main characteristics of human mobility observed through the mobile signaling data (the inter-arrival time of update messages, the observed distances of hops from cell to cell made by moving users). Finally, we present the analysis of the compromise that was made between the writing/reading performances and the ease of use of the file format for the data storage. In our second contribution, we propose CT-Mapper, an unsupervised algorithm that enables the mapping of mobile phone traces over a multimodal transport network. One of the main strengths of CT-Mapper is its capability to map noisy sparse cellular multimodal trajectories over a multilayer transportation network where the layers have different physical properties and not only to map trajectories associated with a single layer. Such a network is modeled by a large multilayer graph in which the nodes correspond to metro/train stations or road intersections and edges correspond to connections between them. The mapping problem is modeled by an unsupervised HMM where the observations correspond to sparse user mobile trajectories and the hidden states to the multilayer graph nodes. The HMM is unsupervised as the transition and emission probabilities are inferred using respectively the physical transportation properties and the information on the spatial coverage of antenna base stations. Finally, in our last contribution we propose a method for cellular resource planning taking into account user mobility. Since users move, the bandwidth resource should move accordingly. We design a score based method using TV Whitespace, and user experience, to determine from which cell resource should be removed and to which one it should be added. Combined with traffic history it calculates scores for each cell. Bandwidth is reallocated on a half-day basis. Before that, real traces of cellular networks in urban districts are presented which confirm that static network planning is no longer optimal. A dynamic femtocell architecture is then presented. It is based on mesh interconnected elements and designed to serve the score based bandwidth allocation algorithm. The score method along with the architecture are simulated and results are presented. They confirm the expected improvement in bandwidth and delay per user while maintaining a low operation cost at the operator side. In conclusion, this thesis provides an overview of the potential of analyzing the signaling metadata of a network in a broader context that supervision of an operator networ
Recommended from our members
KC 4.4 Building Multi-cultural Understanding Through Translation and Dialogue: Languages and terminologies for ICOMOS IFLA ISCCL Rural Landscapes Principles
No full textRafaella Laviscio, Architect, Phd, adjunct professor at Politecnico di Milano (Italy) where she carries out research on the issues of protection and enhancement of cultural heritage and landscape in the context of national and international research programs. She is member of ICOMOS Italia and ISCCL and responsible for the scientific and organizational secretariat of the "World Rural Landscape Initiative". She is expert member of several Landscape Commission in Milan metropolitan area. She has participated in national and international conferences on the theme of cultural heritage and landscape. She is author of publications on the issues of knowledge and evaluation of cultural heritage.
Hossam Mahdy is an Egyptian and British conservation architect. Acquired PhD from Glasgow University, MSc from University of Louvain and BSc from Ain Shams University. His work focuses on Islamic views on the conservation of cultural heritage, Arabic terminology of conservation, and the translation of conservation literature from English into Arabic. He is an advisor to ICOMOS Secretariat on World Heritage and a consultant to EAMENA Project at Oxford University on Arabic heritage terminology and translations. Hossam is a member of ICOMOS-UK and ICOMOS-CIAV. He worked extensively on the study and conservation of vernacular built heritage in the Arab region.
Haeedeh Laleh is professor of Islamic archaeology at the Department of Archaeology, founderand head of the Bioarchaoelogy Laboratory, Central Library: University of Tehran. She is currently vice president for the Middle East region of the ICOMOS/IFLA International Scientific Committee on Cultural Landscapes (ISCCL), and board member of Iran National committee of ICOMOS.The spread and put in action of the Principles’ text in the national context require, first of all, the translation of the original English version. It is not automatic and requires different considerations and challenges (as linguistic and cultural). For instance, some English terms have no known equivalent Arabic terms (such as landscape, vernacular and integrity), other terms have different equivalents used by different individuals or institutions, others (as bio-cultural diversity, conservation, heritage, sustainable development) require some specifications due to differences in worldview and value systems in the different national contexts (and according to different disciplinary sectors in the same national context). The Knowledge Cafe would encourage a multi-cultural discussion on building shared understanding of the issues and challenges regarding the translation and terminology. It will be organized as follows: Raffaella Laviscio will briefly introduce the topic and present, as responsible for the Italian translation, the challenges that arise from this particular context such as the need for a multidisciplinary approach (as required by the principles’ text) that clashes in Italy with a certain sectoriality of competences concerning rural landscape. Hossam Mahdy and Khalid El Harrouni, responsible for the Arabic translation, reflect on the challenges concerning Arabic terms for conservation-related concepts, methods and actions due to differences in worldview and value systems between traditional Arabic-speaking communities and modern Western/Westernized worldviews and value systems. Haeedeh Lahed and Gity Homa Irani Behbahani give some notes concerning the Middle East and the Iranian World. Li Xie and Hang Lu join the discussion by reflections concerning Chinese translation of the Principles’ Text. The open discussion will be guided by some questions: how do different contexts define and interpret words like landscape, rural landscape, heritage and so on? what is the scope of the Principles’ text that the different national socio-economic conditions define? what are the links with other sectors, policies and emerging themes in the national contexts that must necessarily be highlighted? The goal will be to gather as many diverse suggestions from around the globe on which key words may need to have local linguistic interpretations so that the text can be interpreted most appropriately for local use and to the further revision and implementation of the Principles' text on a world scale
“I come here to know” : Muslims navigating space, (in)visibility, and fluidity of religious practice in Uppsala, Sweden
No full textThis ethnographic study investigates the process of placemaking in the context of the newly built Al-Hamd Mosque as a Muslim place of worship in Uppsala, Sweden. I consider how access to space e.g., a mosque or a prayer room, affects the religious practices of Muslims in their everyday life at work, school, or in public. I explore how people navigate other spaces, both physical and social, and what ‘strategies’ and ‘tactics’ are used to maintain their religious practice. I suggest the need for two concepts of consensus in relation to placemaking. The first is what I call community consensus which occurs among Muslim actors in the process of establishing a place such as Al-Hamd Mosque. I explore rituals such as the Taleem sessions (religious seminars) and khutba al jumah (Friday sermon) to analyse negotiations and contestations that take place in such a process. It involves the organising of different actors through hierarchical and power relations to maintain or contest a system of regularities at the mosque. I argue that as a melting pot, multiple systems of order negotiate with one another at Al-Hamd Mosque to create and maintain the community consensus, while protecting the space from impurities. The second form of consensus I call public consensus, is the access to agreements, acceptance, and shared understanding vis-à-vis practising religion in public places in the broader Swedish society. I explore how the lack of public consensus calls for individuals to come up with ‘tactics,’ while groups, in the form of mosque associations, to come up with ‘strategies’ to create places of religious practice. The fluidity of religious practice and the adoption of alternative practices become key tactics assumed by individuals in performing different rituals and practices as they navigate a lack of public consensus in Sweden
The ILC Guide to Practice on Reservations to Treaties Put to the Test in the Hossam Ezzat Case Before the African Commission on Human and Peoples’ Rights
No full textIn 2011 the International Law Commission adopted the Guide to Practice on Reservations to Treaties (Guide on Reservations) to clarify and develop the regime concerning reservations under the 1969 Vienna Convention on the Law of Treaties. The report of the African Commission on Human and Peoples’ Rights (African Commission) in the Hossam Ezzat case provides an occasion for reflecting on the usefulness of the Guide with regard to some problems having a bearing on human rights treaties. In the report, the “Sharia reservation” formulated by Egypt to Article 8 of the African Charter on Human and Peoples’ Rights enshrining religious freedom was at stake. The author argues that weaknesses of the Guide on Reservations underlie certain shortcomings of the reasoning of the African Commission. In particular, as the Guide on Reservations does not specify whether vague or general reservations are permissible, the African Commission considered the Egyptian reservation to be merely problematic. In order to determine the scope of the reservation, the African Commission artificially resorted to a “reservations dialogue”, as introduced in an Annex to the Guide on Reservations. Ambiguities in the guidelines relating to reservations to provisions concerning rights from which no derogation is permissible and to treaties containing interdependent rights and obligations may explain why the African Commission did not follow them
Recycling of Reclaimed Asphalt Pavement in Portland Cement Concrete
No full textReclaimed Asphalt Pavement (RAP) is the result of removing old asphalt pavement material. RAP consists of high quality well-graded aggregate coated with asphalt cement. The removal of asphalt concrete is done for reconstruction purposes, resurfacing, or to obtain access to buried utilities. The disposal of RAP represents a large loss of valuable source of high quality aggregate. This research investigates the properties of concrete utilizing recycled reclaimed asphalt pavement (RAP). Two control mixes with normal aggregate were designed with water cement ratios of 0.45 and 0.5. The control mixes resulted in compressive strengths of 50 and 33 MPa after 28 days of curing. The coarse fraction of RAP was used to replace the coarse aggregate with 25, 50, 75, and 100% for both mixtures. In addition to the control mix (0%), the mixes containing RAP were evaluated for slump, compressive strength, flexural strength, and modulus of elasticity. Durability was evaluated using surface absorption test
- …
