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SoAS - Scholarly Publications: Recent submissions

  • Construction of Solutions to a Global Eikonal Equation 
    Nour, Chadi; SAS; 200502681; Computer Science and Mathematics; chadi.nour@lau.edu.lb (2016-03-30)
    We give a new and simple proof to the main result of [8] in which we derived a geometric necessary and sufficient condition for the existence of solutions to a global eikonal equation.
  • On the Union of Closed Balls Property 
    Nour, Chadi; Takche, Jean; SAS; 200502681; 198790400; Computer Science and Mathematics; chadi.nour@lau.edu.lb; jtakchi@lau.edu.lb (2016-03-30)
    We provide a new analytical proof for a strengthened version of the variable radius form of the union of closed balls conjecture. We also introduce a strong version of this conjecture and discuss its validity.
  • Semiconcavity of the bilateral minimal time function 
    Nour, Chadi; Stern, Ronald J.; SAS; 200502681; Computer Science and Mathematics; chadi.nour@lau.edu.lb (2016-03-30)
    For a linear control system, we provide conditions under which the bilateral minimal time function T(⋅,⋅) is semiconcave near a given point (α,β). A semiconvexity result of Nour [C. Nour, The bilateral minimal time function, ...
  • The union of uniform closed balls conjecture 
    Nour, Chadi; Stern, Ronald J.; Takche, Jean; SAS; 200502681; 198790400; Computer Science and Mathematics; chadi.nour@lau.edu.lb; jtakchi@lau.edu.lb (2016-03-30)
    The exterior sphere condition is compared to proximal smoothness, and examples are provided, which show that the two properties are not necessarily equivalent. Then conditions are given under which equivalence holds, ...
  • Semigeodesics and the Minimall Time Function 
    Nour, Chadi; SAS; 200502681; Computer Science and Mathematics; chadi.nour@lau.edu.lb (2016-03-30)
    We study the Hamilton-Jacobi equation of the minimal time function in a domain which contains the target set. We generalize the results of Clarke and Nour [J. Convex Anal., 2004], where the target set is taken to be a ...
  • Proximal Smoothness and the Exterior Sphere Condition 
    Nour, C.; Takche, J.; Stern, R. J.; SAS; 200502681; 198790400; Computer Science and Mathematics; chadi.nour@lau.edu.lb; jtakchi@lau.edu.lb (2016-03-30)
    Proximal smoothness and the exterior sphere condition are compared. It is shown via examples that these two properties are not necessarily equivalent, and geometric conditions are provided under which the equivalence holds.
  • Nonconvex Duality in Optimal Control 
    Nour, C.; Clarcke, F. H.; SAS; 200502681; Computer Science and Mathematics; chadi.nour@lau.edu.lb (2016-03-30)
    We derive a representation of the minimum cost of an optimal control problem in terms of the upper envelope of generalized semisolutions of the Hamilton--Jacobi equation.
  • Regularity of the state constrained minimal time function 
    Nour, Chadi; Stern, R. J.; SAS; 200502681; Computer Science and Mathematics; chadi.nour@lau.edu.lb (2016-03-30)
    The regularity of the state constrained minimal time function is studied. We generalize [P. Wolenski, Y. Zhuang, Proximal analysis and the minimal time function, SIAM J. Control Optim. 36 (1998) 1048–1072, Theorem 6.1] in ...
  • Existence of solutions to a global eikonal equation 
    Nour, C.; SAS; 200502681; Computer Science and Mathematics; chadi.nour@lau.edu.lb (2016-03-30)
    We derive a geometric necessary and sufficient condition for the existence of solutions to a global eikonal equation. We also study the existence of a minimal solution to this equation, and its relation with the well-known ...
  • Validity of the Union of Uniform Closed Balls Conjecture 
    Nour, C.; Stern, R. J.; Takche, J.; SAS; 200502681; 198790400; Computer Science and Mathematics; jtakchi@lau.edu.lb; chadi.nour@lau.edu.lb (2016-03-30)
  • Teachers’ views of professional learning and collaboration in four urban Lebanese primary schools 
    Bahous, Rima; Busher, Hugh; Nabhani, Mona; SAS; 198129610; 197902770; Education; rbahous@lau.edu.lb; mnabhani@lau.edu.lb (2016-03-29)
    This study to investigate how teachers develop their skills and knowledge to construct enthusiastic student learning and what part school principals play in that development was carried out in four primary schools serving ...
  • Impact of Read_aloud in the Classroom 
    Nabhani, Mona; Bahous, Rima; Oueini, Hanane; SAS; 198129610; 197902770; Education; rbahous@lau.edu.lb; mnabhani@lau.edu.lb (2016-03-29)
    This study was conducted over ten weeks with fifty three 5 to 6 year-old kindergarteners from economically disadvantaged homes learning French as a second language. The read-aloud strategy consisted of two teachers reading ...
  • Principals’ views on teachers’ professional development 
    Nabhani, Mona; Bahous, Rima; Maurin O' Day, Nicolas; SAS; 198129610; 197902770; Education; mnabhani@lau.edu.lb; rbahous@lau.edu.lb (2016-03-29)
    This article is an account of a study that aimed to elicit the perceptions of school principals and middle managers in Lebanon on teachers’ professional development (PD) and to promote an understanding of PD that extends ...
  • Strategic Planning at Two Levels: Contrasting Strategic Planning Processes at Qatar University (Public) and Lebanese American University (Private) 
    Nauffal, Diane; Nasser, Ramzi; SAS; 200804486; Education; diane.nauffal@lau.edu.lb (2016-03-29)
    According to Angelo (1995, p. 7), the assessment process is composed of four stages: making our expectations explicit and public; setting appropriate criteria and high standards for learning quality; systematically gathering, ...
  • Financial Aid at private Universities in the Middle East 
    Nasser, Ramzi; Nauffal, Diane; Romanowski, Micheal; SAS; 200804486; Education; diane.nauffal@lau.edu.lb (2016-03-29)
    Many private universities around the world sustain their growth and retain students through a system of ‘cost-sharing’ where fees and tuition are channelled back to students in form of financial aid. Not all students are ...
  • Do educational outcomes in Lebanese universities differ based on the academic model? 
    Nauffal, Diane; SAS; 200804486; Education; diane.nauffal@lau.edu.lb (2016-03-29)
    Purpose – The purpose of this paper is to examine differences in students' perceptions of quality and satisfaction with their educational experience among four types of higher educational models, American, French, Egyptian ...
  • Frequency of Repeated Courses its Relation to Persistence and Performance in Lebanon's Higher Education 
    Nasser, Ramzi; Nauffal, Diane; SAS; 200804486; Education; diane.nauffal@lau.edu.lb (2016-03-29)
    This study assesses the relationship between the frequency of repeating courses and students' performance in college. The study uses cohort data from academic years 2000/2001, 2001/2002, 2002/2003 and 2003/2004. We compared ...
  • Assessment of Student Engagement 
    Nauffal, Diane; SAS; 200804486; Education; diane.nauffal@lau.edu.lb (2016-03-29)
    Quality is a multi-dimensional concept and embraces all functions and activities of higher education (academic programs, research, and community services) in all their features and components. Traditionally quality was a ...
  • AI-Based Methods for Predicting Required Insulin Doses for Diabetic Patients 
    Azar, Danielle; Bitar, Mandy; SAS; 198833240; Computer Science and Mathematics; danielle.azar@lau.edu.lb (2016-03-24)
    Treating diabetes mellitus requires patients to retrieve multiple measurements daily over multiple years. This results in an enormous amount of data. Endocrinologists need to find a certain pattern in this data that would ...
  • An ant colony optimization algorithm to improve software quality prediction models 
    Azar, D.; Vybihal, J.; SAS; 198833240; Computer Science and Mathematics; danielle.azar@lau.edu.lb (2016-03-24)
    Context Assessing software quality at the early stages of the design and development process is very difficult since most of the software quality characteristics are not directly measurable. Nonetheless, they can be ...

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