Applied information technology Research Papers (original) (raw)
2025, International Journal of Science and Applied Information Technology
Cities are divided into barangays, the smallest local government units managed by Barangay and Sangguniang Kabataan (SK) officials. Barangay officials oversee community welfare, basic services, and local projects, while SK officials focus... more
Cities are divided into barangays, the smallest local government units managed by Barangay and Sangguniang Kabataan (SK) officials. Barangay officials oversee community welfare, basic services, and local projects, while SK officials focus on youth development through programs and initiatives. However, managing resident data is currently a manual process, requiring SK officials to visit households, record details on paper, transfer them to Word documents, and print them. This labor-intensive approach is both time-consuming and inefficient, particularly when sorting data by specific criteria like age groups. To address these challenges, a study was conducted to develop a more efficient system to streamline these processes. A web-based application made as a solution where residents can create accounts and input their personal details through a userfriendly graphical user interface (GUI). This system implemented features such as data analytics and surveys to support project evaluation. Additionally, key functionalities such as QR code integration for Barangay SK clearance ensure its authenticity, project monitoring and evaluation tools, a resident portal, a dashboard for SK Chairperson and SK Kagawad, as well as modules for announcements, certificate requests, and a history log to ensure data privacy and security. This system aimed to make administrative tasks more effective and reliable. The testing results have shown that the software meets ISO 25010 standards for software quality, which has an average of 95.63% passed. The system demonstrates functional suitability with high success rates, efficient performance under varying loads, and reliability with minimal downtime.In conclusion, the system is a high-quality solution that effectively addresses the needs of the barangay. Its robust design and thorough testing confirm its readiness for deployment, ensuring longterm usability and reliability.
2025, Advances in Evolutionary Algorithms
2024, Journal of Applied Research and Technology
Mexican Public Research Centers (PRCs) have become one of the most important actors in technology development for most enterprises they interact with. Nevertheless, knowledge generated and accumulated by PRCs is being underutilized or not... more
Mexican Public Research Centers (PRCs) have become one of the most important actors in technology development for most enterprises they interact with. Nevertheless, knowledge generated and accumulated by PRCs is being underutilized or not utilized at all in the advance of new projects to benefit productive sectors. In this paper we review a number of variables to pinpoint factors that either promote or hinder successful R&D projects; i.e. those transferred to the industry. We conclude that it is feasible to design policies to boost positive factors while preventing or reducing the impact of the negative ones.
2024, Bulletin of the American Physical Society
Submitted for the DFD17 Meeting of The American Physical Society Modeling and Simulation of Swirl Stabilized Turbulent Non-Premixed Flames 1 SALVADOR BADILLO-RIOS, ANN KARAGOZIAN, UCLA-Flame stabilization is an important design criterion... more
Submitted for the DFD17 Meeting of The American Physical Society Modeling and Simulation of Swirl Stabilized Turbulent Non-Premixed Flames 1 SALVADOR BADILLO-RIOS, ANN KARAGOZIAN, UCLA-Flame stabilization is an important design criterion for many combustion chambers, especially at lean conditions and/or high power output, where insufficient stabilization can result in dangerous oscillations and noisy or damaged combustors. At high flow rates, swirling flow can offer a suitable stabilization mechanism, although understanding the dynamics of swirl-stabilized turbulent flames remains a significant challenge. Utilizing the General Equation and Mesh Solver (GEMS) code, which solves the Navier-Stokes equations along with the energy equation and five species equations, 2D axisymmetric and full 3D parametric studies and simulations are performed to guide the design and development of an experimental swirl combustor configuration and to study the effects of swirl on statistically stationary combustion. Results show that as the momentum of air is directed into the inner air inlet rather than the outer inlet of the swirl combustor, the central recirculating region becomes stronger and more unsteady, improving mixing and burning efficiency in that region. A high temperature region is found to occur as a result of burning of the trapped fuel from the central toroidal vortex. The effects of other parameters on flowfield and flame-stabilization dynamics are explored.
2024, Global Developments in Nation Branding and Promotion: Theoretical and Practical Approaches
Applied informatics have given a plethora of tools that enable mass diplomacy to reach its intended targets. The digital realm allows the insertion of information into internal and external audiences in real-time, promoting a nation's... more
Applied informatics have given a plethora of tools that enable mass diplomacy to reach its intended targets. The digital realm allows the insertion of information into internal and external audiences in real-time, promoting a nation's brand. This chapter examines how electronic social networks and other forms of online participation allow for the application of 'soft power' that nevertheless has hard policy goals. The challenges, shortcomings, and enabling effects of applied informatics on mass diplomacy approaches are discussed along with the mention of Chinese and Russian approaches. The utility and the true impact of electronic social networking are discussed, along with the dichotomy of mass diplomacy both enabling access to a nation's internal audience and to its intended external audience targets. The interactivity and level of engagement of the user of applied informatics communication vessels enable the effects of mass diplomacy.
2024, arXiv (Cornell University)
Content zoning can be understood as a segmentation of textual documents into zones. This is inspired by [6] who initially proposed an approach for the argumentative zoning of textual documents. With the prototypical Cozo+ engine, we focus... more
Content zoning can be understood as a segmentation of textual documents into zones. This is inspired by [6] who initially proposed an approach for the argumentative zoning of textual documents. With the prototypical Cozo+ engine, we focus on content zoning towards an automatic processing of textual streams while considering only the actors as the zones. We gain information that can be used to realize an automatic recognition of content for pre-defined actors. We understand Cozo+ as a necessary pre-step towards an automatic generation of summaries and to make intellectual ownership of documents detectable.
2024, Journal of Applied Research and Technology
Feature transformation and key-point identification is the solution to many local feature descriptors. One among such descriptor is the Scale Invariant Feature Transform (SIFT). A small effort has been made for designing a hexagonal... more
Feature transformation and key-point identification is the solution to many local feature descriptors. One among such descriptor is the Scale Invariant Feature Transform (SIFT). A small effort has been made for designing a hexagonal sampled SIFT feature descriptor with its applicability in face recognition tasks. Instead of using SIFT on square image coordinates, the proposed work makes use of hexagonal converted image pixels and processing is applied on hexagonal coordinate system. The reason of using the hexagonal image coordinates is that it gives sharp edge response and highlights low contrast regions on the face. This characteristic allows SIFT descriptor to mark distinctive facial features, which were previously discarded by original SIFT descriptor. Furthermore, Fisher Canonical Correlation Analysis based discriminate procedure is outlined to give a more precise classification results. Experiments performed on renowned datasets revealed better performances in terms of feature extraction in robust conditions.
2024, Journal of Applied Research and Technology
Face recognition is one of a complex biometrics in the field of pattern recognition due to the constraints imposed by variation in the appearance of facial images. These changes in appearance are affected by variation in illumination,... more
Face recognition is one of a complex biometrics in the field of pattern recognition due to the constraints imposed by variation in the appearance of facial images. These changes in appearance are affected by variation in illumination, expression or occlusions etc. Illumination can be considered a complex problem in both indoor and outdoor pattern matching. Literature studies have revealed that two problems of textural based illumination handling in face recognition seem to be very common. Firstly, textural values are changed during illumination normalization due to increase in the contrast that changes the original pixels of face. Secondly, it minimizes the distance between interclasses which increases the false acceptance rates. This paper addresses these issues and proposes a robust algorithm that overcomes these limitations. The limitations are resolved through transforming pixels from nonillumination side to illuminated side. It has been revealed that proposed algorithm produced better results as compared to existing related algorithms.
2024, Journal of Applied Research and Technology
The process of any analog system design has been formulated on the basis of the control theory application. This approach produces many different design strategies inside the same optimization procedure and allows determining the problem... more
The process of any analog system design has been formulated on the basis of the control theory application. This approach produces many different design strategies inside the same optimization procedure and allows determining the problem of the optimal design strategy existence from the computer time point of view. Different kinds of system design strategies have been evaluated from the operations number. The general methodology for the analog system design was formulated by means of the optimum control theory. The main equations for this design methodology were elaborated. These equations include the special control functions that are introduced artificially. This approach generalizes the design process and generates an infinite number of the different design strategies. The problem of the optimum design algorithm construction is defined as the minimum-time problem of the control theory. Numerical results of some electronic circuit design demonstrate the efficiency and perspective ...
2024, IAEME PUBLICATION
This review explores the reconnaissance of RTV (Room Temperature Vulcanizing) silicone coating for ceramic insulators in live-line maintenance for Ultra High Voltage (UHV) transmission lines. It addresses the significance of live-line... more
This review explores the reconnaissance of RTV (Room Temperature Vulcanizing) silicone coating for ceramic insulators in live-line maintenance for Ultra High Voltage (UHV) transmission lines. It addresses the significance of live-line maintenance in ensuring the reliability and safety of electrical infrastructure, particularly focusing on the role of ceramic insulators and the challenges they encounter, such as pollution flashover. The properties of RTV silicone coating, including its hydrophobicity, high dielectric strength, and pollution resistance, are discussed. Advantages and challenges associated with its application are highlighted, along with comparative studies assessing its performance against traditional coatings or untreated insulators. The review also examines various application techniques, field trials, and case studies, evaluating the durability, reliability, and environmental considerations of RTV siliconecoated insulators. Finally, future directions for research and development in this area are suggested, emphasizing the importance of optimizing coating formulations and exploring novel application techniques to enhance the reliability and performance of ceramic insulators in UHV transmission systems.
2024, Journal of Applied Research and Technology
This paper presents a face hashing technique for fast face recognition. The proposed technique employs the two existing algorithms, i.e., 2-D discrete cosine transformation and K-means clustering. The image has to go through different... more
This paper presents a face hashing technique for fast face recognition. The proposed technique employs the two existing algorithms, i.e., 2-D discrete cosine transformation and K-means clustering. The image has to go through different pre-processing phases and the two above-mentioned algorithms must be used in order to obtain the hash value of the face image. The searching process is increased by introducing a modified form of binary search. A new database architecture called Facebases has also been introduced to further speedup the searching process.
2024, Journal of Applied Research and Technology
Physical aging of semicrystalline polyethylene terephthalate was studied using differential scanning calorimetry(DSC). PET samples with crystallinity content of 0.28 were aged at two different temperatures, 25 and 45°C. Thesamples were... more
Physical aging of semicrystalline polyethylene terephthalate was studied using differential scanning calorimetry(DSC). PET samples with crystallinity content of 0.28 were aged at two different temperatures, 25 and 45°C. Thesamples were stored for several days and periodically tested using DSC method. The glass transition temperature forthe samples aged at 25°C was about 73-74°C, and the position and intensity of endothermic peaks wereapproximately constant. Higher glass transition of the samples aged at 45°C, 73-86°C, was attributed to the enthalpyrelaxation process of amorphous regions of semicrystalline PET. For the samples aged at 45°C, the endothermicpeaks shifted to higher temperatures with increasing aging time. The position of the endothermic peaks determined bythe temperature of the maximum, Tmax, tended to increase with aging time for samples aged at 45°C, and theintensity of the peaks continuously increased with time; however, the results showed that the aging of PET sampl...
2024, Journal of Applied Research and Technology
Dynamical systems methods have been recently used in spread-spectrum digital communication systems. Theexpansion of the spectrum using a pseudorandom sequence with a higher frequency than the information signal is thekey feature for its... more
Dynamical systems methods have been recently used in spread-spectrum digital communication systems. Theexpansion of the spectrum using a pseudorandom sequence with a higher frequency than the information signal is thekey feature for its robustness against the signal traveling interference through the channel. In this work, we propose togenerate pseudorandom sequences by employing cellular automata and we check these sequences have thenecessary properties which are required in modern communication systems. The computed sequences obtained bythe cellular automata are tested in a quadrature phase shift keying (QPSK) spread-spectrum communication system.The efficiency of the system is analyzed by computing the bit error rate under different signal to noise ratio conditions.These results are compared with systems that employ Golden code and other typical pseudorandom sequences.
2024, Journal of Applied Research and Technology
In this work, a survey is made of the analysis of the resource selection process. We approach the process also from the point of view of conventional enterprises but with particular emphasis on the existent models in Agile/Virtual... more
In this work, a survey is made of the analysis of the resource selection process. We approach the process also from the point of view of conventional enterprises but with particular emphasis on the existent models in Agile/Virtual Enterprises in order to identify the main limitations and shortcomings of the process. This analysis was focused in the global process of the resource selection, namely in terms of the pre-selection and selection phases, requisites, mathematical models, tools and other relevant areas in the existent models. It is concluded that the resource pre-selection is an area that is not adequately explored in a systematic way. The value concept is not incorporated in the selection process. As a result, a reasoned analysis is not performed of the decision-making process for creating an Agile/Virtual Enterprise. These conclusions were made to envision a future approach that allows the incorporation of new areas that contribute to the improvement of the resource select...
2024, Proceedings of the 6th WSEAS …
Abstract:-The process of resources systems selection takes an important part in Agile/Virtual Enterprises (A/VE) integration. However, the resources systems selection is a difficult matter to solve in A/VE because: it can be of... more
Abstract:-The process of resources systems selection takes an important part in Agile/Virtual Enterprises (A/VE) integration. However, the resources systems selection is a difficult matter to solve in A/VE because: it can be of exponential complexity resolution; it can be a multi ...
2024, J. ICT Dev. Appl. Res.
This study explored awareness and use of online public access catalogue by patrons of Bingham University Library, Karu, Nassarawa State, Nigeria. It adopted a descriptive survey research design using questionnaire as instrument of data... more
This study explored awareness and use of online public access catalogue by patrons of Bingham University Library, Karu, Nassarawa State, Nigeria. It adopted a descriptive survey research design using questionnaire as instrument of data collection. Copies of the questionnaire were distributed to 350 patrons (student and staff users) randomly out of which 333 (85%) copies were retrieved and used for the study. Data collected were analyzed using Statistical Package for Social Sciences (SPSS). The findings revealed that most of the respondents 124 (37.2%) were aware of the OPAC to a very little extent, while 133 (39.9) were not aware of the OPAC services at all, they preferred to physically browse through the library shelves; that 253 (76.0%) of the respondents used the OPAC to a very little extent and this validated the lack of awareness and use of the OPAC. Meanwhile, 62 (18.6%) of the respondent have never used the OPAC It was obvious from the findings that the majority of the respon...
2024, IJAIT (International Journal of Applied Information Technology)
Blood transfusion is an activity that is often carried out in order to save human life. The availability of appropriate bloodstock is crucial for use during special medical conditions. Therefore, the blood collection center must ensure... more
Blood transfusion is an activity that is often carried out in order to save human life. The availability of appropriate bloodstock is crucial for use during special medical conditions. Therefore, the blood collection center must ensure availability; therefore, it needs to recruit active blood donors, difficult patients to find blood stocks, which will be discussed in this study. The contribution of this research is to design an information system that can find blood donors in the Bandar Lampung area with geolocation technology and use the Dijkstra algorithm to determine the closest route, with a system developed on the Android platform. The system can recommend donors to patients who need blood according to the patient's qualifications. Results obtained are an android-based mobile application that can search for geolocation-based blood donors using the Dijkstra algorithm, which can map the location of the nearest blood donor based on the patient's location. Based on data obt...
2024
With the rapid growth of the internet and digital media techniques over the last decade, multimedia data such as images, video and audio can easily be copied, altered and distributed over the internet without any loss in quality.... more
With the rapid growth of the internet and digital media techniques over the last decade, multimedia data such as images, video and audio can easily be copied, altered and distributed over the internet without any loss in quality. Therefore, protection of ownership of multimedia data has become a very significant and challenging issue. Three novel image watermarking algorithms have been designed and implemented for copyright protection. The first proposed algorithm is based on embedding multiple
2024, Procedia CIRP
Micro-milling applications require high precision and dimensional accuracy. Chatter vibrations arising from unstable cutting conditions cause poor surface finish and damage to the cutting tools. Tool point frequency response functions... more
Micro-milling applications require high precision and dimensional accuracy. Chatter vibrations arising from unstable cutting conditions cause poor surface finish and damage to the cutting tools. Tool point frequency response functions (FRF); needed to generate stability diagrams, cannot be determined experimentally due to very small tool size. In this study an analytical model for tool point FRF of micro end mills is presented. An inverse algorithm is proposed to correct geometric representation and damping of the tool. The model and the correction methodology presented improve productivity and part quality in micro-milling through accurate prediction of chatter stability limits, enabling better cutting parameter selection.
2024, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
Machining is material removal from a workpiece. Current spindle technologies allow the material to be removed very quickly but unfortunately this compromises the accuracy of the desired machined trajectory on the workpiece. Proposed... more
Machining is material removal from a workpiece. Current spindle technologies allow the material to be removed very quickly but unfortunately this compromises the accuracy of the desired machined trajectory on the workpiece. Proposed solution to the problem is restricting motion of the tool and giving rotation to the workpiece. This paper presents analysis of the accuracy of trajectory of material removal from a workpiece, such that the workpiece rotates with six degrees of freedom, in the presence of error generated due to an offset of the workpiece from centre of the moving platform of the machining bed. The kinematics of the machining bed is, therefore, modeled using as inverse kinematic formulation applying geometric and vector addition method. The mechanism outputs three rotational and three translational motions. The leg length for each of six legs of the bed is computed individually. Moreover, workpiece position offset error is modelled to find actual leg lengths of the bed. F...
2024, Journal of Applied Research and Technology
The progressive implementation of software functions in Integrated Circuits (ICs) has considerably increased the number of transistors and pin connections of ICs. For that reason, Printed Circuit Boards (PCBs) are fabricated with the... more
The progressive implementation of software functions in Integrated Circuits (ICs) has considerably increased the number of transistors and pin connections of ICs. For that reason, Printed Circuit Boards (PCBs) are fabricated with the Surface Mount Technology (SMT) nowadays and IC mounting on PCB is a crucial process that requires high precision. An Automatic Mechanical Montage (AMM) system is used to mount ICs on the sockets using a couple of reference points for every IC in order to find the correct positions for mounting the IC. Due to some factors in the process of PCB development, there are differences between designed and manufactured PCBs, which could generate delays in their production. In this work, a software tool which allows to work with digital images of PCBs is described. This tool finds the differences generated in PCB development, especially the differences in IC reference points using Digital Image Processing (DIP) techniques. RESUMEN La realización progresiva de funciones de software en los Circuitos Integrados (CI) ha incrementado considerablemente el número de transistores así como de pines de conexión de los CI. Por esta razón, hoy en día las Tarjetas de Circuito Impreso (TCI) son fabricadas con la Tecnología de Montaje Superficial y el montaje de los CI sobre la TCI es un proceso crucial que requiere una alta precisión. Un sistema de Montaje Mecánico Automático (MMA) se usa para montar los CI sobre los zócalos usando unos puntos de referencia para cada CI de modo que encuentra los posiciones correctas para el montaje del CI. Dados algunos factores en el proceso de desarrollos de las TCI, existen diferencias entre las TCI diseñadas y las manufacturadas, las cuales generan retardos en su producción. En este trabajo se describe una herramienta de software que permite trabajar con imágenes digitales de una TCI. Esta herramienta encuentra las diferencias generadas en el desarrollo de TCI, especialmente las diferencias en los puntos de referencia para CI usando técnicas de Procesamiento Digital de Imágenes.
2023, Journal of Applied Research and Technology
The main purpose of active-filter based power-quality improvement problems is to reduce the total harmonic distortion (THD) and improve power factor (PF) as much as possible. However according to standards such as IEEE-519/IEC 61000,... more
The main purpose of active-filter based power-quality improvement problems is to reduce the total harmonic distortion (THD) and improve power factor (PF) as much as possible. However according to standards such as IEEE-519/IEC 61000, selective harmonic distortion (SHD) should be controlled. The conventional power factor correction techniques, assume the voltage source to be purely sinusoidal. But it is rarely true because nonlinear loads draw nonsinusoidal current from the source and that causes a nonsinusoidal voltage supply applied to the load. Under such conditions, any attempt to make the power factor unity by usual methods will result into a nonsinusoidal current, which increases total harmonic distortion (THD). On the other hand, harmonic free current does not necessarily result in unity power factor because of harmonics present in the voltage. Therefore, there is a trade-off between improvement in power factor and reduction of THD. One of the best solutions for this trade-off is to optimize PF while keeping THD and SHD into their prespecified limits. In this paper five methods including shuffled frog-leaping algorithm (SFL), conventional PSO (C-PSO), linearly decreasing inertia PSO (LDI-PSO), type 1 PSO (T1-PSO) and constant inertia PSO (CI-PSO) are employed in order to optimize PF while restricting the THD and SHD within the inertia constant. In this work, the compensating current to be supplied by the shunt active power filter to the power system with these five optimization methods is applied and is observed using these evolution methods, PF has been improved considering all conditions. Also simulation results of a case study illustrate the high quality performance of SFLA among the algorithms used.
2023
Accurate and easily accessible microclimate data coming from a broad range of locations is useful for both for agricultural scientists researching the effects of various environmental parameters on orchard, and for agriculture... more
Accurate and easily accessible microclimate data coming from a broad range of locations is useful for both for agricultural scientists researching the effects of various environmental parameters on orchard, and for agriculture practitioners willing to increase yield quantity and quality from their plantations. We present SAD: a wireless sensor network (WSN) system designed for this very purposecollecting microclimate data in precision agriculture. We describe the hardware solution we have specifically designed for this application-SADmote, a WSN device for microclimate monitoring-, and the software we have created and adapted, which includes MansOS, an operating system for WSN motes. However, the main focus point of this paper is on two pilot sensor network deployments carried out in the orchard of Latvia State Institute of Fruit-Growing. The first pilot sensor network was deployed in 2009, used 8 motes, and harvested data for a month; the second deployment took place in 2011, used 17 motes (12 of them custom-made) and lasted for one and a half month. We discuss and analyse this real-world WSN experience in the context of our future plans. We believe the lessons learned will be useful for a broader WSN community.
2023, Journal of Applied Research and Technology
In this article we address a districting problem faced by a pickup and delivery parcel company over a determined service region. The service region is divided into districts, each served by a single vehicle that departs from a central... more
In this article we address a districting problem faced by a pickup and delivery parcel company over a determined service region. The service region is divided into districts, each served by a single vehicle that departs from a central depot. Two objectives are optimized: compactness and balance of the workload content among the districts. We present a mathematical formulation of the problem and a heuristic algorithm to solve the problem. Numerical results are presented in comparison to CPLEX 11.1 solutions for the smaller size instances. The results show that the heuristic performs well. The algorithm is able to solve moderate size instances in reasonable computational time, given the strategic nature of the problem.
2023, Journal of Applied Research and Technology
Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto
2023, 22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013)
The Technical Quality of Service has been a constant concern in EDP Distribuição. Between 2008 and 2010 the Portuguese Distribution System Operator (DSO) carried out significant efforts to improve the index that measures the quality of... more
The Technical Quality of Service has been a constant concern in EDP Distribuição. Between 2008 and 2010 the Portuguese Distribution System Operator (DSO) carried out significant efforts to improve the index that measures the quality of service in Portugal, the Average Interruption Time (AIT). Currently the focus is on reducing certain asymmetries that still persist between different areas. In this context the need to carry out extensive works in secondary substations (MV/LV) has arisen. Taking into account the need for quick and less expensive solutions to the problems encountered in those secondary substations, several solutions were designed, aiming for a strong impact on results and simultaneously a quick implementation.
2023, 22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013)
The Technical Quality of Service has been a constant concern in EDP Distribuição. Between 2008 and 2010 the Portuguese Distribution System Operator (DSO) carried out significant efforts to improve the index that measures the quality of... more
The Technical Quality of Service has been a constant concern in EDP Distribuição. Between 2008 and 2010 the Portuguese Distribution System Operator (DSO) carried out significant efforts to improve the index that measures the quality of service in Portugal, the Average Interruption Time (AIT). Currently the focus is on reducing certain asymmetries that still persist between different areas. In this context the need to carry out extensive works in secondary substations (MV/LV) has arisen. Taking into account the need for quick and less expensive solutions to the problems encountered in those secondary substations, several solutions were designed, aiming for a strong impact on results and simultaneously a quick implementation.
2023, Journal of Applied Research and Technology
Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto
2023, Journal of Applied Research and Technology
How to cite Complete issue More information about this article Journal's homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic... more
How to cite Complete issue More information about this article Journal's homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative
2023
Attribute-based credentials (ABCs) are an important building block of privacy-enhancing identity management. Since non-identifying attributes can easily be abused as the anonymity they provide hides the perpetrator, cryptographic... more
Attribute-based credentials (ABCs) are an important building block of privacy-enhancing identity management. Since non-identifying attributes can easily be abused as the anonymity they provide hides the perpetrator, cryptographic mechanisms need to be introduced to make them revocable. However, most of these techniques are not efficient enough in practice. ABCs with practical revocation have recently been proposed by Hajny and Malina [5]. Their ABCs make use of different discrete logarithm representations of a fixed value. Although this technique is attractive as the verification of a particular issuer's credentials is easy, it has an intrinsic weakness. Colluding users can efficiently forge new credentials that are indistinguishable from legally issued ones.
2023
The study focused on meeting the information needs of Nurses for effective health care delivery in Nigeria with Federal Medical Centre, Owerri as case study and the area of study is SouthEast , Nigeria.. The descriptive survey method was... more
The study focused on meeting the information needs of Nurses for effective health care delivery in Nigeria with Federal Medical Centre, Owerri as case study and the area of study is SouthEast , Nigeria.. The descriptive survey method was used. The nominal roll of Federal Medical Centre,Owerri was used to derive the population of the study which is 300 and the sample of the study is 171. The questionnaire was used as instrument for data collection. The data collected was analysed using the simple percentages and tables. The findings of the study revealed that the nurses had need of information to care and manage patients as well as to improve their knowledge in clinical areas. Internet, Journals and books were the major sources consulted by nurses even though they still consult other medical database. The nurses are not satisfied with the information sources they consult. The factor militating against easy accessibility to health information among nurses include inadequate training o...
2023, Proceedings of the 5th conference on Smart Card …
Group signature schemes allow a group member to sign messages on behalf of the group. Such signatures must be anonymous and unlinkable but, whenever needed, a designated group manager can reveal the identity of the signer. During the last... more
Group signature schemes allow a group member to sign messages on behalf of the group. Such signatures must be anonymous and unlinkable but, whenever needed, a designated group manager can reveal the identity of the signer. During the last decade group signatures have been playing an important role in cryptographic research; many solutions have been proposed and some of them are quite efficient, with constant size of signatures and keys ([1], [6], [7] and [15]). However, some problems still remain among which the large number of computations during the signature protocol and the difficulty to achieve coalition-resistance and to deal with member revocation. In this paper we investigate the use of a tamper-resistant device (typically a smart card) to efficiently solve those problems.
2023, Engineering and Industry
Power transmission reliability and system integrity are essential requirements in high voltage transmission and distribution networks. Outdoor insulation has a critical role, since the majority of these installations incorporate open air... more
Power transmission reliability and system integrity are essential requirements in high voltage transmission and distribution networks. Outdoor insulation has a critical role, since the majority of these installations incorporate open air systems and there are many factors able to trigger deterioration mechanisms, which may finally conclude to a system failure. It is important to notice, that although the initial investment for the insulation systems is low in comparison to other types of equipment, an insulation failure may result in considerable costs for the utility. A strategy that is followed by more and more utilities nowadays is the incorporation of composite insulators, in transmission and distribution systems, where the influence of pollution is considerable. In Crete, this action started 37 years ago, experienced intense action; 15 years ago and today the majority of outdoor insulators are composite. This large scale application is presented in this paper, especially with reference to the problems experienced and the testing and maintenance procedures applied.
2023
Accurate and easily accessible microclimate data coming from a broad range of locations is useful for both for agricultural scientists researching the effects of various environmental parameters on orchard, and for agriculture... more
Accurate and easily accessible microclimate data coming from a broad range of locations is useful for both for agricultural scientists researching the effects of various environmental parameters on orchard, and for agriculture practitioners willing to increase yield quantity and quality from their plantations. We present SAD: a wireless sensor network (WSN) system designed for this very purposecollecting microclimate data in precision agriculture. We describe the hardware solution we have specifically designed for this application-SADmote, a WSN device for microclimate monitoring-, and the software we have created and adapted, which includes MansOS, an operating system for WSN motes. However, the main focus point of this paper is on two pilot sensor network deployments carried out in the orchard of Latvia State Institute of Fruit-Growing. The first pilot sensor network was deployed in 2009, used 8 motes, and harvested data for a month; the second deployment took place in 2011, used 17 motes (12 of them custom-made) and lasted for one and a half month. We discuss and analyse this real-world WSN experience in the context of our future plans. We believe the lessons learned will be useful for a broader WSN community.
2023, Journal of Applied Research and Technology
In this work, a survey is made of the analysis of the resource selection process. We approach the process also from the point of view of conventional enterprises but with particular emphasis on the existent models in Agile/Virtual... more
In this work, a survey is made of the analysis of the resource selection process. We approach the process also from the point of view of conventional enterprises but with particular emphasis on the existent models in Agile/Virtual Enterprises in order to identify the main limitations and shortcomings of the process. This analysis was focused in the global process of the resource selection, namely in terms of the pre-selection and selection phases, requisites, mathematical models, tools and other relevant areas in the existent models. It is concluded that the resource pre-selection is an area that is not adequately explored in a systematic way. The value concept is not incorporated in the selection process. As a result, a reasoned analysis is not performed of the decision-making process for creating an Agile/Virtual Enterprise. These conclusions were made to envision a future approach that allows the incorporation of new areas that contribute to the improvement of the resource select...
2023, International Journal of Science and Applied Information Technology
This paper presents the results of a survey conducted to explore the usage of the online public access catalog (OPAC) at a higher educational institution in Pagadian City. The study randomly selected two hundred and forty (240) students... more
This paper presents the results of a survey conducted to explore the usage of the online public access catalog (OPAC) at a higher educational institution in Pagadian City. The study randomly selected two hundred and forty (240) students from Saint Columban College as respondents from various departments. A qualitative case study design was employed to describe, analyze, and interpret the data collected. The researchers used survey questionnaires as the main instrument and ensured proper organization during their administration, including appropriate briefing and guidance. The findings indicate that the majority of library users rarely utilize OPAC services, attributing it to lack of awareness. Although some patrons have used the OPAC, there is room for improvement in promoting its use and increasing awareness among users. It is evident that students have a consistent need for library resources and are actively engaged in academic research or coursework requiring frequent access to library materials. The study further reveals that student participants are dissatisfied with the OPAC services and lack awareness about its functionalities. In conclusion, this study highlights the low usage of OPAC among library users and emphasizes the need to upgrade the current system to provide better services.
2023, European Journal of Theoretical and Applied Sciences
This study aimed to design and develop an interactive learning application called CLAYmb, utilizing the phases of the SDLC, and evaluated its technical and quality aspects using ISO 25010 software standards. The study utilized a... more
This study aimed to design and develop an interactive learning application called CLAYmb, utilizing the phases of the SDLC, and evaluated its technical and quality aspects using ISO 25010 software standards. The study utilized a developmental research design, with IT experts and end-users as respondents, and the results demonstrated that the SDLC model was suitable for developing the system, and the respondents highly accepted it. The study's recommendations include conducting further research to evaluate the long-term effectiveness of CLAYmb, involving a more diverse set of respondents, and improving the system's usability through user testing and feedback analysis. Valuable insights into the development and evaluation of interactive learning applications using SDLC and ISO 25010 software standards are presented in this study. It emphasizes the significance of involving users in the design and development process and underscores the need for continuous evaluation and enhanc...
2023, Microwave and Optical Technology Letters
metal layer and are realized in octagonal forms for minimizing resistive losses. Figure 3 shows the chip photo of the fabricated CR-LNA with a chip area of 0.59 mm 2 including all testing pads. Note that the 15-pF capacitor (C 3) is... more
metal layer and are realized in octagonal forms for minimizing resistive losses. Figure 3 shows the chip photo of the fabricated CR-LNA with a chip area of 0.59 mm 2 including all testing pads. Note that the 15-pF capacitor (C 3) is implemented by an array of capacitors, and it consumes about 120 3 180 lm 2 chip area. The CR-LNA consumes 5.5 mW from a 1.3-V supply voltage, and undesired parasitics of pads and interconnections are removed by a de-embedding procedure. The measurement results of S-parameters and NF is shown in Figure 4(a). The good agreement between measured and simulated results is also observed. The measured small signal gain (|S 21 |) and NF is 20.4 and 3.7 dB at 10.7 GHz, respectively. Moreover, the measured input return loss (|S 11 |) and output return loss (|S 22 |) is about 11 and 18 dB at 10.7 GHz. Figure 4(b) shows the measured input P 1dB and the third-order nonlinearity (IIP3) of the CR-LNA. One tone at 10.7 GHz was applied to the input P1dB measurement, and two tones were applied to the IIP3 measurement with equal power level at 10.7 and 10.8 GHz. The measured input P1dB and IIP3 is 232 and 218.3 dBm. Table 1 summarizes previously reported 18-lm CMOS LNAs at X-band, and this work demonstrates the highest gain performance with the lowest power consumption. 4. CONCLUSION In this article, a novel design of the X-band CR-LNA with highgain performance and low-power consumption is presented. The CR-LNA has successfully implemented, measured, and verified with superior performances. The gain enhancement is realized by the three CS cascade amplifiers, and the power consumption is economized by the CR topology. Compared to previously reported 0.18-lm CMOS LNAs at X-band, the presented design achieves the highest gain performance while maintains the lowest power consumption. It is convinced that the proposed design methodology reveals great potentials for X-band radar or other wireless communication applications.
2023, 22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013)
During the last decades the use of composite insulators has grown all over the world. And also diagnostic techniques for these insulators have been studied and developed. According to DIN50019, the coastal districts of Persian Gulf are... more
During the last decades the use of composite insulators has grown all over the world. And also diagnostic techniques for these insulators have been studied and developed. According to DIN50019, the coastal districts of Persian Gulf are classified as extreme hydrothermal climatic zone. Unusually high saturation vapor pressure up to 53mbar observed in this zone, justify this marking, as such air humidity phenomena are unique in the free atmosphere of the earth and are absolute extremes. Intensive night falls of dew, which can occur regularly for several months, long periods of rainless and sultry weather and high level of marine pollution worsening the situation for power lines. This paper present an applicable program for diagnostics and condition monitoring (CM) of 20 kV distribution line which is located in a coastal district which pollution level of this region is classified at very heavy category as shown in figure1.with pilot project in this area, this model of CM presented the best tool for Evaluation of reminded life of all kind of insulators.
2023
The present work describes the experimental investigation on NOx emissions of partially premixed flames characterised by air staging through radial injection of premixed jets into a co-flow swirling air. NOx emissions were found to... more
The present work describes the experimental investigation on NOx emissions of partially premixed flames characterised by air staging through radial injection of premixed jets into a co-flow swirling air. NOx emissions were found to increase with increasing partial premixing and reach a maximum value at Φp ≈ 5, followed by a dramatic decrease as Φp approaches values ≈ 3. In the most favourable conditions, single digit NOx levels were reached without penalizing combustion performances or increasing CO emissions. The effects of staging on the amount of NO2 found at the exhaust were also examined and the results corroborate the idea that NO2 is formed in the turbulent mixing region, favoured by the increasing cooling rate of the combustion gas by entrainment of cold unburned gas. PIV measurements of the isothermal flow field are used to confirm the analysis and to better understand how the emissions are related to the turbulent mixing of the premixed first stage with the secondary swirl...
2023, Microwave and Optical Technology Letters
metal layer and are realized in octagonal forms for minimizing resistive losses. Figure 3 shows the chip photo of the fabricated CR-LNA with a chip area of 0.59 mm 2 including all testing pads. Note that the 15-pF capacitor (C 3) is... more
metal layer and are realized in octagonal forms for minimizing resistive losses. Figure 3 shows the chip photo of the fabricated CR-LNA with a chip area of 0.59 mm 2 including all testing pads. Note that the 15-pF capacitor (C 3) is implemented by an array of capacitors, and it consumes about 120 3 180 lm 2 chip area. The CR-LNA consumes 5.5 mW from a 1.3-V supply voltage, and undesired parasitics of pads and interconnections are removed by a de-embedding procedure. The measurement results of S-parameters and NF is shown in Figure 4(a). The good agreement between measured and simulated results is also observed. The measured small signal gain (|S 21 |) and NF is 20.4 and 3.7 dB at 10.7 GHz, respectively. Moreover, the measured input return loss (|S 11 |) and output return loss (|S 22 |) is about 11 and 18 dB at 10.7 GHz. Figure 4(b) shows the measured input P 1dB and the third-order nonlinearity (IIP3) of the CR-LNA. One tone at 10.7 GHz was applied to the input P1dB measurement, and two tones were applied to the IIP3 measurement with equal power level at 10.7 and 10.8 GHz. The measured input P1dB and IIP3 is 232 and 218.3 dBm. Table 1 summarizes previously reported 18-lm CMOS LNAs at X-band, and this work demonstrates the highest gain performance with the lowest power consumption. 4. CONCLUSION In this article, a novel design of the X-band CR-LNA with highgain performance and low-power consumption is presented. The CR-LNA has successfully implemented, measured, and verified with superior performances. The gain enhancement is realized by the three CS cascade amplifiers, and the power consumption is economized by the CR topology. Compared to previously reported 0.18-lm CMOS LNAs at X-band, the presented design achieves the highest gain performance while maintains the lowest power consumption. It is convinced that the proposed design methodology reveals great potentials for X-band radar or other wireless communication applications.
2023, Proceedings of SPIE - The International Society for Optical Engineering
2023, Journal of Applied Research and Technology
Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto
2023
Mussarat Yasmin Department of Computer Science, COMSATS Institute of Information Technology, Wah Cantt, Pakistan Email: mussaratyasmin@comsats.edu.pk Muhammad Sharif Department of Computer Science, COMSATS Institute of Information... more
Mussarat Yasmin Department of Computer Science, COMSATS Institute of Information Technology, Wah Cantt, Pakistan Email: mussaratyasmin@comsats.edu.pk Muhammad Sharif Department of Computer Science, COMSATS Institute of Information Technology, Wah Cantt, Pakistan Email:muhammadsharifmalik@yahoo.com Muhammad Alyas Shahid Department of Computer Science, COMSATS Institute of Information Technology, Wah Cantt, Pakistan Email:mashahid79@g,mail.com
2023, Proceedings of the 5th conference on Smart Card …
Group signature schemes allow a group member to sign messages on behalf of the group. Such signatures must be anonymous and unlinkable but, whenever needed, a designated group manager can reveal the identity of the signer. During the last... more
Group signature schemes allow a group member to sign messages on behalf of the group. Such signatures must be anonymous and unlinkable but, whenever needed, a designated group manager can reveal the identity of the signer. During the last decade group signatures have been playing an important role in cryptographic research; many solutions have been proposed and some of them are quite efficient, with constant size of signatures and keys ([1], [6], [7] and [15]). However, some problems still remain among which the large number of computations during the signature protocol and the difficulty to achieve coalition-resistance and to deal with member revocation. In this paper we investigate the use of a tamper-resistant device (typically a smart card) to efficiently solve those problems.
2023, Journal of Applied Research and Technology
This paper presents a wireless communication protocol based on the Earliest Deadline First policy for wireless body sensor networks. This work advances a previous effort by proposing using an implicit Earliest Deadline First policy to... more
This paper presents a wireless communication protocol based on the Earliest Deadline First policy for wireless body sensor networks. This work advances a previous effort by proposing using an implicit Earliest Deadline First policy to guarantee real-time communication by optimizing network traffic flow, although this strategy may imply using the totality of bandwidth resources. The proposed protocol uses a slotted time-triggered medium access transmission control that is collision-free, even in the presence of hidden nodes. The protocol has been analytically modeled using Colored Petri Networks and Simulated in OPNET.
2023, International Journal of Engineering, Science and Technology
Virtual cellular manufacturing systems (VCMS) have come into existence, replacing traditional cellular manufacturing systems (CMS), to meet highly dynamic production conditions in terms of demand, processing times, product mix and... more
Virtual cellular manufacturing systems (VCMS) have come into existence, replacing traditional cellular manufacturing systems (CMS), to meet highly dynamic production conditions in terms of demand, processing times, product mix and processing sequence. While cell formation phase of VCMS has been dealt quite voluminously, worker assignments phase has gained momentum recently after researchers started realizing the importance of workers' role during implementation of cell-based manufacturing. In the past, worker assignments have been analyzed with development of various heuristics/mathematical models in order to achieve reduced worker costs, improved productivity and quality, effective utilization of workforce and providing adequate levels of worker flexibility. In this paper, a new approach based on artificial neural networks (ANNs) has been proposed to assign workers into virtual cells since ANNs have the ability to model complex relationships between inputs and outputs and find similar patterns effectively. A framework of multilayered perceptron with feed forward (MLP-FF) neural network has been formulated on worker assignment for VCMS under dual resource constrained (DRC) context and its performance under two cell configurations with different time periods is analyzed. A worker assignment model has been developed and applied with cell formation solutions available in the literature in order to generate simulated datasets that drive the training process of proposed ANN framework.
2023
This work is focused on the study of stiffness performance for multibody robotic systems since stiffness can be considered of primary importance in order to guarantee the successful use of any robot for a given task. Once a proper... more
This work is focused on the study of stiffness performance for multibody robotic systems since stiffness can be considered of primary importance in order to guarantee the successful use of any robot for a given task. Once a proper stiffness model and formulation have been defined they can be used in compliance control algorithms, or for design purposes in order to find an optimum compromise between lightweight design and stiffness performance.
2023, Applied Bionics and Biomechanics
In this paper, the operation of CALUMA (CAssino Low-cost hUMAnoid) robot has been investigated for a task while carrying a load. CALUMA robot is the result of a design project that has been elaborated for designing and building a low-cost... more
In this paper, the operation of CALUMA (CAssino Low-cost hUMAnoid) robot has been investigated for a task while carrying a load. CALUMA robot is the result of a design project that has been elaborated for designing and building a low-cost easy-operation humanoid robot by summarizing experiences and prototypes that have been developed at LARM. Dynamic simulations have been computed by using ADAMS software in order to study dynamical aspects of CALUMA operation while carrying a load. The dynamic simulations have also been used for studying the manipulation performance of CALUMA robot. Simulations have given results that confirm the feasibility of the proposed design, as shown in the reported examples.
2023, IFIP Advances in Information and Communication Technology
The execution of supply process orders in a supply chain is conditioned by different types of disruptive events that must be detected and solved in real time. In this work we present a compound web service that performs the monitoring and... more
The execution of supply process orders in a supply chain is conditioned by different types of disruptive events that must be detected and solved in real time. In this work we present a compound web service that performs the monitoring and notification functions of a supply chain event management system. This web service is designed based on a reference model that we have proposed to improve the event management activity through a deeper analysis of the occurrence and causality of events, leading to anticipate an exception during the execution of a supply process order. The web service composition is defined based on business processes. The ability to proactively detect, analyze and notify disruptive events is given through of a Bayesian network with decision nodes.