Department of Computer Science: Recent submissions

  • Identity based change represented in the three domain model : an efficient system for modelling real world phenomena 
    Wakim, Tony H. (Notre Dame University-Louaize, 2000)
    Geographic Information Systems (GIS) have gone a great way since it has started as a science. GIS is making headlines in a number of disciplines and, through its advancement, has improved our ability to model our real world. In the past years the need to support the storage and retrieval of dynamic changes, which occur to our data, has increased which consequently led to the interest in spatio-temporal behavior in GIS. These years have also seen the birth of several spatio-temporal data Models, whose aim is to support this spatio-temporal behavior. The main aim behind Spatio-Temporal support is ...
  • On integrating Kalman filters with partial resequencing for real-time tracking systems 
    Yazbeck, Khalil Nazih (Notre Dame University-Louaize, 2001)
    This thesis deals with the communication network performance of the Automatic Vehicle Location (AVL) distributed database system. The Automatic Vehicle Location system is used to real-time track the movement of vehicles, traveling along a large geographical area. The full control of the movement of these vehicles requires the use of many communication systems such as Global Positioning system, Packet switching network and distributed database systems including vehicle position databases. The main goal of this thesis is to minimize the update response time in a real-time fully replicated distributed ...
  • A comparison of ATM service categories with a modification of the ABR control scheme 
    Shammas, Shady J. (Notre Dame University-Louaize, 1999)
    Over the last few years, LAN technologies have been driven by the need to support an increasing number of users as well as bandwidth intensive applications. As new and existing network applications evolve to embrace high-resolution graphics, video and other rich media types, pressure is growing at the desktop, the server, the hub and the switch for increased bandwidth. All this has led to new network protocols needed to support the amount of information required. In this thesis, we will briefly review conventional networking protocols and internetworking devices. Then we present a table comparing ...
  • Reducing power consumption in wireless sensors networks 
    Azar, Edgard (Notre Dame University-Louaize, 2004)
    The emerging field of wireless sensor networks combines sensing, computation, and communication into a single tiny device. Through advanced mesh networking protocols, these devices form a sea of connectivity that uses any possible communication path by hopping data from one node to another in search of its destination. While the capabilities of any single device are minimal, the collection of hundreds of sensors offers major new technological possibilities. Examples of usage scenarios for these devices are real-time tracking and security monitoring, issues that will be studied in this thesis. ...
  • Optimization of IP Multicast Networks performance 
    Samia, Mireille I. (Notre Dame University-Louaize, 2001-06)
    Internet Multicast service extends the Internet point-to-point unicast delivery to a multi-point delivery. Multicasting means that a datagram is sent to multiple sites at more or less the same time. To support real-time multimedia, the minimization of delay without loosing the reliability of the network is required. To achieve this goal, we have proposed to change the architecture of a multicast one-stage network to a multicast hierarchical two-stage network. We have proved that by giving additional functionalities (such as back-up and error correction) to the intermediate sites (i.e. mrouters) ...
  • An up-to-date survey of location and transaction management in mobile database systems 
    Mansour, Emile N. (Notre Dame University-Louaize, 2002)
    Mobility attracts many developers and system designers; it will give us the ability to use our computers with no physical limitations with respect to connections. This thesis will try to introduce the main concepts that define mobile computing in our days. It will identify the challenges that face mobile computing and their impact on current developments in this area. Location management and how the cellular networks function is defined and described. We will conduct a comparison between protocols in location management with respect to network messages and database operations. In the IS-41 model ...
  • Hop-by-hop flow control with packet aggregation in TCP/IP networks 
    Kamouh, Walid A. (Notre Dame University-Louaize., 2000-07)
    The internet is once again suffering from its own success. Since 1995, there has been a massive increase in demand for internet services, resulting in an exponential growth of the Internet. We have entered now an era where the users of the Internet are unable to obtain the bandwidth needed to support their applications, and they are experiencing high packet loss. Packet loss problem arises whenever the number of packets arriving at a given router is much higher than its buffering space. The main goal of this thesis is to find adaptive schemes capable of optimizing the communication network ...
  • Integrating Neural networks and GIS for solving the travelling salesman problem 
    Ibrahim, Rita Jack (Notre Dame University-Louaize, 2000-06)
    In this thesis, we investigate the use of neural networks for solving the Traveling Salesman Problem (TSP). First, we review the main elements of the theory of NP-completeness. Then, we explain what makes some problems computationally intractable. We review some heuristic approaches used to provide near-optimal solutions to NP-complete problems. Then, we introduce the topic of neural networks and describe some of the most popular neural network models. We pay a special attention to a recent model, named the Hybrid Neural Network model (HNN), used for solving optimization problems and the Hybrid ...
  • Transaction execution in grid database 
    Abboud, Micheline (Notre Dame University-Louaize, 2005-04)
    The Grid initiative provides an infrastructure for distributed computation among widely distributed high-performance computers. This will allow for exchanging and processing very large amounts of data. There are a huge number of applications that are geographically distributed such as multi-point radio facility for astrophysics, space physics, atmospheric physics, and radio research, utilizing very high performance Grid Computing. It is expected that similar applications to become important in commercial settings, initially for scientific and technical computing applications and then for commercial ...
  • Uncertainty handling tool for legal consultation 
    Al-Halaby, Ramzi R. (Notre Dame University-Louaize., 1999-06)
  • Task allocation in parallel and distributed computer system 
    Mina, Jean G. (Notre Dame University-Louaize, 1998-07)
    The allocation problem is known to be NP-Hard in the most general case where both the number of modules and the number of processors is arbitrary, and it is also Np-Complete in some of the restricted cases. Also, the general scheduling problem, where no restrictions are imposed on the interconnection structure between modules, on the modules processing time and on the number of parallel processors, is NP-Hard in the strong sense. Even under some restrictions, the scheduling problem is NP-Hard. In some other restricted cases, it is known to be NP-Complete. In this thesis, we first review fifty ...
  • Applied computational and numerical methods 
    Abou-Jaoude, Abdo Milad (Notre Dame University-Louaize, 1998-05)
  • Dynamically driven & generated systems D.D.G.S. 
    Jabbour, Joseph A. (Notre Dame University-Louaize, 2005)
    The purpose of this thesis is to plan, design, and implement a real and complete lifetime solution for many applications to provide developers and designers with a strong and a good pattern for future development. We have developed a well structured solution, which is basically meant for helping anyone who is involved in the software development cycle in (i) separating the layers, as well as (ii) shortening the development time of the user interface layer, and (iii) controlling the flow of these interfaces. Not to forget (iv) helping the developer with the creation of the data entities, this ...
  • Toward an interactive internet search engine 
    Akl, Imad M. (Notre Dame University-Louaize, 2002-06)
    This thesis uses the HITS algorithm as a basis to propose an interactive internet search engine. With the Web becoming a major source of information for many users, it became a necessity to be able to search the Web efficiently. The main problem resides with broad topic queries. These are queries for which a typical text-based search engine like AltaVista would return thousands of pages. A remedy for these situations was proposed by Kleinberg in his 1-IITS algorithm in which he uses the hyperlink structure of the Web as a major source of information about the contents of the Web. In this thesis, ...
  • Car accidents in Lebanon : automated prevention and detection, and improvement of emergency response time 
    Keyrouz, Karam (Notre Dame University-Louaize, 2018-02)
    Nearly 1.3 million people die in road crashes each year and 20 to 50 million people are injured or disabled. This made automated car accident prevention and detection a topic of extreme interest worldwide. However, as of yet, the different systems that have been proposed and implemented, do not take underdeveloped countries into account despite their greater need. This is probably due to the fact that this problem is already hard enough to tackle without adding more constraints to it. In addition, these constraints have not been identified and lack of awareness regarding the importance of this ...
  • Serendipity-aware noise detection for recommender systems 
    El Khoury Badran, Miriam (Notre Dame University-Louaize, 2019-05)
    With the rise of the Internet, recommender systems are becoming a used solution to solve the information overload problem. These systems are like any other system, subject to noise: malicious noise that is caused by attacks and natural noise that is due to the human error. Many detection algorithms solve the noise problem. However, since natural noise and serendipity overlap in their definition, removing noise results in removing serendipity. Serendipity that is the happy surprise of finding something relevant unexpectedly is important for the issue of over personalization caused by the recommender ...
  • Data buckets in big data 
    Mansour, Mélanie (Notre Dame University-Louaize, 2019)
    Big data is an evolved term for large volume of unstructured, semi-structured and structured data having the potential to be used and mined for information in machine learning projects and other advanced analytics applications. Big data is the new driver of the world societal changes and economic. The world’s data collection is reaching a tipping point for major technological changes that can bring different ways in finance, decision-making, cities, managing our health, and education. Latest technological improvements in computing, data handling, data storage, and trading have transformed the ...
  • Designing identity access mechanism for broker-based cross-cloud federation system 
    Gemael, Nader A. (Notre Dame University-Louaize, 2018-05)
    Cloud computing ecosystem is one of the trends currently being discussed in the domain of information technology and computing. Computing ecosystem allows smart usage of technology which means unneeded resources are saved such as power, computing resources, spaces for datacenters as well as saving huge amount of CO2 and electric circuit boards and machines. Cloud federation and its underlying techniques, is considered role model in sharing and expanding cloud business to provide better and cheaper services for end-users. In this thesis, we will survey and compare existing Identity Access Management ...
  • Applying data mining for predicting computer science students academic performance 
    Al Youssef, Jad (Notre Dame University-Louaize, 2019-05)
    The aim of this thesis is to study the impact of a three-year-study of computer science at Notre Dame University on the students’ academic performances. For this reason, the GPAs of the students after their first year of study were compared with their GPAs upon graduation. To perform this, a Decision Tree, as well as Neural Networks were used. These algorithms helped us to predict the final GPA based on the first two semesters’ GPA. In addition, the most decisive courses on the student GPA were identified. For this reason, Relief algorithm was used to identify the three most important courses ...
  • Plant leaf classification using dual path convolutional neural networks 
    Rizk, Sara (Notre Dame University-Louaize, 2019-05)
    Taxon identification is highly needed for a wide variety of research including ecology, agronomy and medicine. As of 1970, classification of plants was introduced into computer vision techniques. Most research conducted in this area focuses on leaves due to their availability as well as their ability to discretize. The most common features researchers base their work on are shape, texture and venation. This research study proposes a dual path, dual feature model for plant leaf identification. We weigh our research on shape and venation features. Sobel operators are used for primary and secondary ...

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