The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
When a high dynamic range (HDR) image is synthesized by using a set of differently exposed low dynamic range (LDR) images, it is important to design an anti-ghost scheme to prevent ghosting artifacts from the final HDR image. An anti-ghosting process is typically comprised of detection and correction of moving regions. In this paper, we propose a new method to estimate intensity mapping functions...
In this paper, we study the rendezvous problem for a group of autonomous robots that can be terrestrial or aerial vehicles. The robots have to simultaneously meet at a point. This problem has been addressed by several researchers during the last few years. Various decentralized strategies have been developed and analyzed that guarantees rendezvous behavior. One such strategy is the cyclic pursuit...
The dynamics of a class of recurrent neural networks with uniform constant external input is investigated in this paper. Nowadays, continuous attractors have been recognized as promising model for describing the encoding of continuous stimuli in neural networks. The existence of the continuous attractors depends on a lot of factors such as connection wight and the external input and so on. The external...
The cutting stock problem(CSP) is one of the famous problems of operational research. In the past few decades a number of techniques are proposed to solve the problem. Almost in all technique, the bottleneck is the column generation phase due to the enumerative nature. In this paper, we propose a technique, for column generation that reduces the total number of cutting pattern to be generated. The...
This paper presents the verification and implementation of non-inverting buck-boost converter in the application of energy-harvesting battery charger which is widely used in multiple power source embedded system. Simplified models for PV and rechargeable battery have been used for theoretical analyzing. Buck and boost topologies have been analyzed to obtain the MPP (Maximum Power Point) under different...
Given a piecewise linear system defined by two linear systems operating each of one in each side of an hyperplane of the state space, we give a canonical form of its equations by means of a feedback and a change of variables.
In this paper, an adaptive controller is designed to a magnetic levitation system to cope with internal time-varying uncertainties and external disturbances. Since, in an experimental study, the traditional magnetic levitation design is not easy to realize external disturbances to the system, a horizontal configuration is constructed in this paper. To facilitate the analysis and controller design,...
Providers of composite Web services face the challenge of having to comply to SLAs, which are agreements governing the minimum performance that customers can expect from a composite service. In this work, a framework for optimizing adaptations of service compositions with regards to SLA violations has been developed. The framework, dubbed PREvent (Prediction and Prevention of SLA Violations Based...
This paper review the effectiveness of the parity space approach to identify faults or disturbance in a system. The most commonly used is the observer based procedures, and redundancy relationship method. This involves analytical mathematical analysis of geometry and bilinear algebra. Then, technological advances which require complex computation such as artificial intelligence and genetic algorithm...
In this paper, we propose a novel framework WSCRec, in which historical information (i.e., execution logs) are utilized to facilitate the process of Web service composition. According to the execution logs of composite services, appropriate services which have been proved to be more reliable and robust and have higher probability to fulfill users' demands are located.
Automobile manufacturing is one of the most important industries in the world. Assembly line is one of the main supply chain of the industry. It contains several workshops and stations where each station consists of many different tasks. These tasks are processed by workers using tools and machines. The unbalancing time is the main problem of the assembly line. This issue presented by the Cycle Time...
In this research, an optimization of monthly tilt angle for solar panels for five main sites in Malaysia is conducted. The optimization method is based on the Liu and Jordan model for solar energy incident on a tilt surface. As a result, applying the monthly optimum tilt angle, increases the collected yields of the PV module/array in Kuala Lumpur, Johor Bharu, Ipoh, Kuching and Alor Setar by 5.03%,...
In this work, a novel quaternary algebra has been employed to design quaternary encoders and decoders of any size. Both priority and ordinary encoders has been designed. The priority encoder in this work may have any arbitrary permutation of input priorities; the design procedure is generic and works for any such permutation. Although no work has ever been done regarding arbitrarily large and randomly...
In this paper we consider a real life waste collection problem that can be seen as a variant of the vehicle routing problem with time windows. In this problem there is a set of clients to be served, a number of facilities where the collected waste must be disposed off and an infinite number of vehicles stationed in a single depot. Each client has a definite time window within which it must be served...
The analog signal communicates the information of electronic system to human in real world, especially for the sense of vision and audition. Among specifications of analog signal, Total-Harmonic-Distortion (THD) is the most significant dynamic parameter for audio and video applications. In this paper, we propose a methodology to estimate THD in time domain. Instead of using Fast-Fourier-Transform...
This paper proposes a novel estimation algorithm for the parameters of an HMM as to best account for the observed data. In this model, in addition to the observation sequence, we have partial and noisy access to the hidden state sequence as side information. This access can be seen as “partial labeling” of the hidden states. Furthermore, we model possible mislabeling in the side information in a joint...
Coincidentally correct test cases are those that execute faulty statements but do not cause failures. Such test cases reduce the effectiveness of spectrum-based fault localization techniques, such as Ochiai, because the correlation of failure with the execution of a faulty statement is lowered. Thus, coincidentally correct test cases need to be predicted and removed from the test suite used for fault...
The applications and adoption of wireless sensor networks (WSNs) in social and environmental purposes are increasing because of monitoring different infrastructures such as military, scientific, environmental, and domestic infrastructures. Low energy adaptive clustering hierarchy (LEACH) and its variants use some intermediate nodes, known as cluster heads, for relaying the communications made between...
Indoor positioning has become a hot research topic due to a plethora of interesting applications ranging from emergency responder tracking to location-based services. In this work we focus on the problem of network localization, sometimes called collaborative localization, where a network of nodes is to be localized using both connections to anchors (when they exist) and connections between unlocalized...
Due to the increasing interest on renewable sources in recent times, the studies on integration of distributed generation to the power grid have rapidly increased. In order to minimize line losses of power systems, it is crucially important to define the location of local generation to be placed. Proper location of DGs in power systems is important for obtaining their maximum potential benefits. This...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.