Browsing University Publications by Title

Now showing items 2156-2175 of 4361

    • Unrelated Machines Scheduling With Machine Eligibility Restrictions 

      Al Salem, Ameer; Armacost, Robert L. ( Qatar University , 2002 , Article)
      In this paper we present a new heuristic algorithm to minimize the makespan for scheduling jobs on unrelated parallel machines with machine eligibility restrictions ( R^ I M .1 C^^). To the best of our knowledge, the ...

    • Unsteady State Process Computations On Spreadsheets 

      Javed, K. H.; Ahmad, Shamim ( Qatar University , 1993 , Article)
      Spreadsheets are becoming increasingly popular, as a useful tool, for making process engineering calculations. This paper shows the use of spreadsheets for computations of an unsteady state process described by ordinary ...

    • Unsteady State Two Phase Flow Pressure Drop Calculations 

      Ayatollahi, Shahaboddin ( Qatar University , 1992 , Article)
      A method is presented to calculate unsteady state two phase flow in a gas-liquid line based on a quasi-steady state approach. A computer program for numerical solution of this method was prepared. Results of calculations ...

    • Unsteady-State Interphase Diffusion 

      Chebbi, R. ( Qatar University , 1993 , Article)
      This study is concerned with the problem of unsteady interphase diffusion for multicomponent dilute solutions. An integral technique, based on an approximate boundary-layer approach is used. Results are in good agreement ...

    • Upgrading Existing Infrastructures - The Case Study of Industrial IC Bridge 

      Tzaveas, Theodoros; Anagnostaki, Christina; Matsuo, Yoji; Sergakis, Georgios ( Qatar University Press , 2023 , Conference Paper)
      Doha, the capital of Qatar, has been facing phenomenal growth of vehicular traffic owing to rapid development which has resulted in traffic congestion causing significant rise in travelling time in some areas. To mitigate ...

    • The Urban Morphology of Mshereib, the Heart of Downtown Doha 

      Amleh, Rozan A. A.; Major, Mark David; Tannous, Heba O.; Alyafei, Almaha M.; Fetais, Ghada H.; ... more authors ( Qatar University Press , 2023 , Conference Paper)
      Doha experienced a remarkable transformation since oil and natural gas exportation began in the mid-twentieth century. Rapid urbanization and globalization ('process of interaction and integration among people, companies, ...

    • Urbanism Beyond Cognition: On Design and Machine Learning 

      Bottazzi, Roberto ( Qatar Univesrity Press , 2021 , Conference Paper)
      It could be argued that the introduction of new technologies always shifts the 'epistemological horizon' of the different fields they impact. New instruments allow expanding the range of parameters defining a discipline's ...

    • Urea Hydrolysis and Urease Activity in Saudi Arabian Soils 

      Al Falih, Abdullah M. [عبد الله مساعد خلف الفالح] ( Qatar University , 2000 , Article)
      Soil samples were collected from eight different localities m Saudi Arabia, and analysed for mechanical properties as well as for urea hydrolysis. The urease enzyme activity of these calcareous soils was also investigated. ...

    • Use of 3D Images to Evaluate Formation Damage Induced by Montmorillonite Fines in Porous Media Systems 

      Hannun,Jamal; Al-Raoush,Riyadh; Jarrar, Zaher; Alshibli, Khalid; Jung, Jongwon ( Qatar Univesrity Press , 2020 , Conference Paper)
      Formation damage costs oil and gas industry $140 billion/year in lost productivity, this is a key challenge to Qatar, the world's largest LNG exporter. During production from a well, multiphase flow foster drag forces to ...

    • Use of Authentic Materials in English as a Foreign Language Classrooms: Challenges, Reasons, Types and Frequency 

      Orooq, Ghuson; Hussein Abdel Razeq, Anwar; عروق, غصن; حسين عبد الرزاق, أنور ( Qatar University Press , 2023 , Article)
      This descriptive analytical research study investigated English as a foreign language teachers’ attitudes towards the use of authentic materials in their classrooms, reasons for using authentic materials, challenges in ...

    • Use Of Cement By-Pass Dust In Soil Stabilization 

      Taha, Ramzi; Al-Rawas, Amer; Al-Harthy, Ali; Al-Siyabi, Hilal ( Qatar University , 2001 , Article)
      Cement by-pass dust (CBPD) or cement kiln dust (CKD) is a by-product of the manufacture of Portland cement. It is generated during the calcining process in the kiln. Lime (CaO) constitutes more than 60% of CBPD composition. ...

    • Use of Crumb Rubber Modified Binders and Asphalt Mixtures in Public Works Authority Road Projects - State of Qatar 

      Santagata, Ezio; Sebaaly, Haissam; Idris, Osman Elhusain Mohamed; Ali, Moaaz Hashim M. M.; Al-Emadi, Khalid Mohd I ( Qatar Univesrity Press , 2020 , Conference Paper)
      This paper illustrates the approach adopted by the Public Works Authority (Ashghal) of the State of Qatar for the widespread implementation in road projects of paving technologies related to the use of crumb rubber modified ...

    • Use of Immersive Augmented Reality Technology in Public Works: Myth or Reality? - A Case Study on Implementation Challenges 

      Narayanasamy, Balamohan; Manicakam, Suresh ( Qatar University Press , 2023 , Conference Paper)
      The State of Qatar witnessed an unprecedented transformation during the past three decades in various sectors, more specifically in public infrastructure. The rapid transformation coupled with urbanization has increased ...

    • The Use of Newly Developed Public Transportation System in Relation to People’s Thermal Perception of Outdoor Climate 

      Alattar, Deema ( Qatar University Press , 2023 , Conference Paper)
      In the past decade, Doha the capital city of Qatar has witnessed a massive shift in various fields including economy, education, and sports sector. This flux caused rapid population growth, and as a result have led to an ...

    • Use of parallel texts: towards successful teaching materials to overcome cultural differences perse 

      Mohammad, Mohammad Fawzi M. ( Qatar University , 2000 , Article)
      The hypothesis of this paper is that the use of Parallel Texts as teaching Materials within a communicative framework could prove insightful for pedagogy i.e. to enable foreign language learners overcome cultural differences. ...

    • Use Of Spreadsheets For Rainfall-Runoff Calculations 

      El Bahrawy, Aly N. ( Qatar University , 1996 , Article)
      The nature of rainfall-runoff calculations necessitates the use of different equations for calculating losses and several response functions to route the effective rainfall hyetograph through the catchment. The ...

    • Uses and Attitudes of Faculty Members in the College of Education at King Faisal University towards Test Item Formats 

      Al Saadat, Abdullah [عبد الله عمر النجار]; Al Najjar Abdullah [عبد الله ابراهيم السعادات] ( Qatar University , 2005 , Article)
      The ever-increasing number of student enrollment in the college of education at King Faisal University has led many faculty members to abandon essay and open-ended type tests and resort to the quickly scorable multiple ...

    • Using Arabic in Testing Reading Comprehension in English 

      Hamdan, Jihad [جهاد حمدان]; Diab, Turki [تركي دياب] ( Qatar University , 1997 , Article)
      This study aims at examining the role of the native language (Arabic) in assessing reading comprehension in the foreign language (English). It reports on the findings of a case study in which two test versions, one in ...

    • Using Ground Penetrating Radar (GPR) to Evaluate Air Voids Content in Hot Mix Asphalt 

      Dehdezi, Pejman ( Qatar Univesrity Press , 2020 , Conference Paper)
      "Air voids content is one of the most important characteristics of Hot Mix Asphalt (HMA). Air voids content that is either too high or too low can negatively impact pavement life and lead to deteriorations such as fatigue ...

    • Using Reclaimed Asphalt and Polymer Modified Asphalt (PMA) to Maximize Cost Saving over the Pavement Life-Cycle in Qatar 

      Khnaizer, Jean ( Qatar Univesrity Press , 2020 , Conference Paper)
      Low performing asphalt mixes along with poor construction practices reduce the pavement serviceability and lead to early failure under repetitive traffic. Government agencies are sometimes urged to implement maintenance ...