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TCP congestion control has been designed to ensure Internet stability along with fair and efficient allocation of the network bandwidth. During the last decade, many congestion control algorithms have been proposed to improve the classic Tahoe/Reno TCP congestion control. This paper aims at evaluating and comparing three control algorithms, which are Westwood+, New Reno and Vegas TCP. Simulation scenarios are carefully designed in order to investigate goodput, fairness and friendliness provided by each of the algorithms. Results show that Westwood+ TCP is friendly towards New Reno TCP and improves fairness in bandwidth allocation whereas Vegas TCP is fair but is not able to grab its bandwidth share when coexisting with Reno or in the presence of reverse traffic because of its RTT-based congestion detection mechanism. Finally results show that Westwood+ remarkably improves utilization of wireless links that are affected by losses not due to congestion. [ABSTRACT FROM AUTHOR]

The paper present a method for optimal design of non-standard spur gears, with the aim of minimising multi-objectives optimisation functions, obtained by weighted sum of different evaluation function, represented of the significant values of some functional parameters. Those parameters can be carrying out with designing and analysing computer applications. The paper is focused on using original MATLAB application, based on genetic algorithms, developed for optimal design, with the aim of simultaneous minimising the contact stress and bending stress on the pinion and on the gear, of asymmetric gears. Having asymmetrical involutes teeth profiles, asymmetric gears are non-standard gears obtained with the "direct gear design method", used for improving the performances of the involutes toothed gears. [ABSTRACT FROM AUTHOR]

The paper presents an original solution to enhance the technical education of the students who will become maritime officers. Taking into account the gap between the general topics and those dedicated to their specialization, among other solutions, we present a relevant computer-based educational model of the ship's hull which is solved using the ship strength methods. Even the solution might be considered complex, the model can be understood by the students because it uses notions from the topics previously completed by them: mathematics, computer programming and numerical methods. The according original software consists of more than 11400 computer code lines. It can be also used in design or research problems as an initial analytic solution. [ABSTRACT FROM AUTHOR]

Implementing a specific algorithm for synchronization based on a selection of relevant QoS (Quality of Service) parameters requests their detailed analysis in order to enable realization of the desired multimedia applications. Ensuring of requested QoS presents one of the important elements of the design and implementation of multimedia networks. The paper analyzes the parameters of importance for multimedia communications. In recent years there has been a rapid increase in multimedia traffic in computer communication networks and the demand for quality of multimedia content transfer services for the users. In response to such requests numerous mechanisms have been developed that enable services for allocating priority of traffic in communication networks, which makes it possible to determine the quality of service. [ABSTRACT FROM AUTHOR]

In this paper is analyzed the potential fields algorithm. The study shows how we have implemented the theoretical method and how we have simulated the results of navigation with obstacles and one target. Also, we tested this method practically by creating an autonomous caterpillar robot and programmed it with this algorithm. We compared the results and we analyzed the areas where the robot presents most of the errors and those where it goes off the simulation normal path. [ABSTRACT FROM AUTHOR]

This paper introduces the Enhancer, a new algorithm that improves the Cost-sensitive classification for Support Vector Machines, by multiplying in the training step the instances of the underrepresented classes. We have discovered that by oversampling the instances of the class of interest, we are helping the Support Vector Machine algorithm to overcome the soft margin. As an effect, it classifies better future instances of this class of interest. [ABSTRACT FROM AUTHOR]

Databases are a major interest point for many business domains. Large amount of information must be carefully kept and managed. An attribute to maintain that "carefully" characteristic is to secure the information. Data encryption has at the moment many solutions. This paper comes with a new symmetric encryption algorithm which uses an old idea, the Scytale technique encountered at the ancient Greeks, and transforms it using IT and mathematical methods. [ABSTRACT FROM AUTHOR]

The paper aims to apply the development and the implementation techniques of Iterative Learning Control structures on adjustment problems related to the "inverted-pendulum" system. The application has not been addressed so far in literature for experiments conducted on the "inverted pendulum" system laboratory equipment. Iterative Learning Control (ILC) differs from most control methods because it exploits every opportunity to incorporate information from the past: error or in some cases the input signal, to build the control action in the present. [ABSTRACT FROM AUTHOR]

The complexity of an algorithm is usually expressed using complexity functions and complexity classes, in this paper we present a method to reduce the work with multi-variable complexity functions to the work with one-variable complexity functions. We define five complexity classes for multi-variable complexity functions and then we prove some properties for these classes. [ABSTRACT FROM AUTHOR]

This paper presents principles of a new methodology for design and evaluation of workplaces in industrial companies. Closer look is dedicated to three main parts of the methodology which are algorithm, knowledge rule base and software support. The mutual relations between these parts are explained. The final methodology will be validated and fine tuned in several industrial companies. The ambitions of this methodology should in praxis help people who aren't true ergonomic expert in the processes of design or evaluation. [ABSTRACT FROM AUTHOR]

This paper proposes an algorithm for analysing the connectivity models of various power system data models, used in both energy and distribution management systems (EMS & DMS). it consists of a set of criteria which are applied on the Common information Model (CIM), an extended version of the CIM and a proprietary data model. These criteria allow solution providers to assess various power system data models before implementing software solutions based on those. [ABSTRACT FROM AUTHOR]