Bulucea C.A

This report examines the "WSEAS Transactions on Power Systems" to determine whether it meets the criteria of a legitimate, highquality scientific journal. By analyzing its editorial policies, peer review process, indexing status, impact factor, and expert testimonials, this study establishes that the journal is not predatory but rather a reputable...

WSEAS has shifted away from directly publishing conference proceedings, they collaborate with reputable publishers like IEEE for certain conferences. Historically, WSEAS published its own conference proceedings. However, recent information indicates that WSEAS no longer publishes conference proceedings directly. Instead, they recommend conferences...

In the last decades, some publishers are intensively exploiting the model of open access publishing. During the last several years, studies have shown that there was a substantial increase in the number of fake publishers and hijacked journals. These cyber criminals make money by stealing the identities of legitimate journals and collecting the art...

The Conference MMCTSE 2020 was in collaboration with the Journal “WSEAS Transactions on Business and Economics”. In this paper, the Metrics, the Peer Review and some statistical results of this Journal: “WSEAS Transactions on Business and Economics” is outlined.

This paper relates to a concrete sustainable development project introduced at university. A small scale genuine materials house (1/20 scale) with its green energy sources and electronic circuits management have been designed. The building itself has already been described in a previous paper [1]. Thanks to a modular design, different types of meas...

Three-phase power transformer is one of the most important elements in the electric power systems, and it plays a significant role in terms of energy savings. Since the efficiency standards can be expressed in terms of electrical efficiency, in an attempt to improve the transformer efficiency, in this study an enhancement of three-phase power trans...

The electrodynamic strength, as forces acting between the current-carrying electric circuits are exerted as long as the currents exist, and have the tendency of deformation and displacement of the circuits. In short-circuit regimes the strength in electrical equipment becomes severe. For instance, short-circuits highly affect power transformers con...

Sustainable operation of electric railway systems represents a significant purpose nowadays in the development of high power and high speed locomotives and trains. At present, high speed electric vehicles mostly work with three-phase induction motors or three-phase synchronous motors as traction motors. The two electric machine types have different...

In the last decades, the wind energy became more attractive to Romania, and thus many resources are allocated to develop the energetic systems based on wind energy. In this work we have investigated the possibility to harvest the wind energy with an actively controlled pitch-plunge aeroelastic system. The paper present some theoretical consideratio...

Reliable and safe operation of a coal-fired power plant is strongly linked to freshwater resources, and environmental problems related to water sources and wastewater discharge are challenges for power station operation. In this study, an evaluation on the basis of a wastewater thermal pollution vector is reported for the environmental impact of re...

Solar irradiation is one of the important parameters that should be taken into consideration for the design and utilization of a photovoltaic system. Usually, the input parameters of a photovoltaic system are solar irradiation, the ambient environment temperature and the wind speed, and as a consequence most photovoltaic systems are equipped with s...

Dangerous and unstable situations can result from the presence of environmental xenobiotics since their harmful effects on humans and ecosystems are often unpredictable, and building awareness of the environmental risk should be a main concern of humankind. The environmental xenobiotics in the flue gas from a fossil fuel-fired electrical generating...

Some aspects are illustrated of energy conversion processes during the operation of electric railway vehicles with traction induction motors, in order to support transport systems’ sustainability. Increasing efforts are being expended to enhance the sustainability of transportation technologies and systems. Since electric drive systems are used wit...

For precise synchronization of ultra wide band (UWB) signals in wireless channels, narrow band interference (NBI) suppression is a challenging issue. This is more relevant for real time channels which are non-linear in nature and are coexisted by narrow band wireless systems. An interference suppression scheme coupled to an energy detection based s...

Reliable and safe operation of a coal-fired power plant is strongly linked to freshwater resources, and environmental problems related to water sources and wastewater discharge are challenges for power station operation. In this study, deals an evaluation on basis of wastewater pollutant vector is reported of the environmental impact of residual wa...

Dangerous and unstable situations can result from the presence of environmental xenobiotics since their harmful effects on humans and ecosystems are often unpredictable. The environmental xenobiotics in the flue gas from a fossil fuel-fired electrical generating station, such as particulate matter (PM), sulfur dioxide (SO2), nitrogen oxides (NOx),...

Transfer function as a kinetic model for tumor cell line, provides, in medical research, useful information on the evolution of the cell population during the experiment. The presence of a tyrosine kinase receptor inhibitor in the cell fraction dynamic process involves a distinct set of parameters specific to the process in vitro. The correlation b...

This paper addresses some aspects illustrating sustainable energy conversion processes during the operation of electric railway vehicles with traction synchronous motors. Increasing efforts are being expended to enhance the sustainability of transportation technologies and systems, and supporting transport systems’ sustainability is a key way of th...

This paper is a sequel to a study by the authors of electric power systems comprising the generator circuit-breakers (GCBs) at power plant generator terminals. A sustainable assessment of the current interruption requirements of a GCB addresses the main stresses on the generator circuit breaker, revealing that the GCB current interruption requireme...

This paper addresses some aspects illustrating sustainable energy conversion processes during the operation of electric railway vehicles with traction synchronous motors. Increasing efforts are being expended to enhance the sustainability of transportation technologies and systems, and supporting transport systems' sustainability is a key way of th...

Glioblastoma is the most common highest-grade and lethal type of brain tumor, causing a high rate of death each year worldwide. Given the resistance of this tumor to standard surgery, radiation and chemotherapy, the consistent efforts to comprehensively profile glioblastomas using latest technologies are addressing this need. In line with this idea...

This paper is a sequel study by the authors on the electric connection circuits comprising the generator circuit-breakers (GCBs) at generator terminals, which was undertaken since GCBs offer many advantages related to the sustainability of an electric power station. This paper extends other studies of the authors which have examined the exergetic t...

The electric connection circuits comprising the generator circuit-breakers (GCBs) at generator terminals offer many advantages related to the sustainability of an electric power station. A sustainable assessment of the current interruption requirements of a GCB addresses the main stresses on the generator circuit breaker, revealing that the GCB cur...

Nowadays, the electric connection circuits of power plants (based on fossil fuels as well as renewable sources) entail generator circuit-breakers (GCBs) at the generator terminals, since the presence of that electric equipment offers many advantages related to the sustainability of a power plant. In an alternating current (a.c.) circuit the interru...

Over the last several decades, it has become increasingly accepted that the term xenobiotic relates to environmental impact, since environmental xenobiotics are understood to be substances foreign to a biological system, which did not exist in nature before their synthesis by humans. In this context, xenobiotics are persistent pollutants such as di...

Theoretically, the concepts of energy, entropy, exergy and embodied energy are founded in the fields of thermodynamics and physics. Yet, over decades these concepts have been applied in numerous fields of science and engineering, playing a key role in the analysis of processes, systems and devices in which energy transfers and energy transformation...

This paper goes on to enhance the way of thinking that human activities cannot be separated from the entire system existence on Earth, and within the present industrial metabolism no biological ecosystem is free of human influence. This study is focused in assessing some sustainability aspects of power transformers, by adopting a dualist view, inco...

The study of any system, including biological systems, usually entails an analysis of inputs and outputs, and system behaviour can be assessed on basis of mathematical modelling and simulation. For an environmental xenobiotic source with an assumed harmonic behaviour, the xenobiotic concentration evolution within a biological system could be determ...

The environmental impact of stack gas to Turceni coil-fired electrical generating station has been carried out on basis of pollutant vector assessment. The environmental pollutants belonging to flue gases vector, as sulfur dioxide SO 2 , nitrogen oxides NO x , particulate matter PM, and carbon dioxide CO 2 have been analyzed in this case study perf...

A full academic year was required to complete the first phase of this innovative realistic small scale house design to introduce sustainable development concept in an electronic engineer school. A few ten young pupils from 12 to 14 years old and their secondary school professors, 5 students and researchers from ENSEIRB-MATMECA engineer school, memb...

Over the last decades, several xenobiotics were found to be toxic to the immune system. Many studies have shown that the term xenobiotic must be related to the environmental impact, emphasizing the xenobiotics in the context of pollutants such as dioxins and polychlorinated biphenyls, or plastics and pesticides, since xenobiotics are understood as...

Within the present industrial metabolism, electric and thermal energy production is one of the main consumers of fossil fuels. Coal is a natural resource and fossil fuel used in the coal-fired power plants in Romania. Unfortunately, beyond the environmental depletion, the problems caused by the environmental releases in operation of these power pla...

Knowledge of emissions during the operation of a coal-fired power plant is an essential step in assessing the environmental and human health impact of pollutants. This paper deals with the assessment of the pollutant vector of wastewaters discharged from a chain of power stations into the same river to operate their cooling systems. This case study...

Numerous morphopathological observations of the placenta, membranes and umbilical cord detect the ascending intrauterine infection and the placental vasculopathy as being dominant in the etiopathogeny of preterm labor. When it is possible to exclude the vasculopathy early, in the asymptomatic phase of the intrauterine infection by means of precise...

Reliable and safe operation of a coal-fired power plant is strongly linked to freshwater resources, and environmental problems related to water source and wastewater discharging are challenging the power plant operation. This study deals with an evaluation on basis of wastewater pollutant vector of the environmental impact of residual water generat...

An important issue of environmental protection process is the solid waste management (SWM), that includes responsible planning of collecting, transporting, processing and disposing of hazardous and non-hazardous solid waste material. A special concern focuses on effective management of biomedical waste. This article highlights a holistic approach o...

The focus of this study is to enhance the way of thinking that human activities cannot be separated from the functioning of the entire system on Earth. Learning from Nature means to accept that the technical systems and processes involving energy conversion and matter transformation need to be linked to environment engineering. This paper adopts a...

The goal of our prospective and controlled study was to dose the serum C reactive protein by Tina-quant immunoturbidimetric technique in parallel with leukocytes counting, in case of patients in the second gestational trimester with threatened abortion of unknown cause, that did or did not evolve towards spontaneous abortion during hospitalization,...

In the first part of the paper there are synthesized the six forms of clinic presentation of the spontaneous abortion: threatened abortion, abortion in progress, incomplete abortion, dead fetus retention, spontaneous recurrent abortion and septic abortion, with an emphasis on late spontaneous recurrent abortion. In the second part there are present...

The focus of this presentation is to enhance the way of thinking that human activities cannot be separated from the functioning of the entire system on Earth. Learning from the Nature means to accept that the technical systems processes involving energy conversion and matter transformation need to be linked to environment engineering. An approach w...

The focus of this presentation is to enhance the way of thinking that human activities cannot be separated from the functioning of the entire system on Earth. Learning from the Nature means to accept that the technical systems processes involving energy conversion and matter transformation need to be linked to environment engineering. An approach w...

Human beings are exposed to a huge variety of health risks over their entire life. This article is an attempt to prove that environmental and health risks and concerns are chained, and the fundamental premises for a systemic approach of biomedical waste management must be achieved. Since an important issue of environmental protection process is the...

The immunophenotypation of circulating lymphocyte by flow cytometry is a fast and efficient modern quantitative method and has been also used to assess immune status in normal pregnancy and pregnancy complicated by infection or with placental abnormalities or with preeclampsia. Since the literature indicates controversy in the immune etiology of ab...

This study is an evaluation based on placental screening, of the importance of ascending intrauterine infection and placental vascular pathology. The paper is as well a plea for the routine use of the modern histopathological exam of the products of conception along with the noninvasive screening of chorioamnionitis (by means of serum C-reactive pr...

This article is an attempt to prove that within the framework of Industrial Ecology the fundamental premises for a systemic approach of waste management can be achieved. An important issue of environmental protection process is the solid waste management, that includes responsible planning of collecting, transporting, processing and disposing of ha...

Within the present industrial society, some of the greatest challenges of humanity are related to achieving a sustainable industrial metabolism, which integrates technical activity and ecological systems. Electric traction drive systems using induction motors fed by variable voltage variable frequency (VVVF) inverters have provided high performance...

The paper illustrates some aspects of energy conversion processes during underground electric train operation. Energy conversion processes are explained using exergy, in order to support transport system sustainability. Loss of exergy reflects a loss of potential of energy to do work. Following the notion that life in Nature demonstrates sustainabl...

The main purpose of this approach is to highlight that an orientation towards the future industrial metabolism requires changes in human behavior and technical patterns. Industrial Ecology is an emerging framework within Sustainable Development. The concepts, tools and goals of Industrial Ecology had to be addressed, along with the understanding th...

Traffic congestion is one of the most burning problems of the authorities from the cities of our country. An effective solution in the cities of Western countries and the U.S., is the implementation of intelligent systems for traffic management. This encourages the use of public transport to the detriment of individual transport, in this way the tr...

A sustainable industrial metabolism, integrating technical patterns into ecological systems should be doubtless related to humans further challenges. By modeling the power electrical transformers in dynamic regimes according to an industrial ecosystem pattern, one could provide a holistic view of the interactions and symbiosis interrelationships am...

In this paper we performed a numerical study with Finite Element Method (F.E.M.) of thermal field in pantograph contact strip and contact wire. We consider the particular case of heating the pantograph contact strip - contact wire by the electric arc. The pantograph is asymmetric EPC type and the contact line wire is TF 100 type, both used in Roman...

A convincing example of the usefulness of the embodied energy and exergy concepts for analyzing systems which convert energy or matter is the circuit breaker disconnecting process. The electrical plants connection circuits are equipped with generator circuit-breakers. The phenomena which occur in case of short-circuit currents interruption determin...

The infection's role in causing or facilitating preterm labor and abortion in the second trimester is nowadays increasingly described. The goal of this study was to quantitatively measure the serum CRP by immunoturbidimetric technique to establish the serum CRP concentration in the second trimester of uncomplicated pregnancy and the sensibility of...

The benefits are demonstrated of using exergy to understand the efficiencies of electrical power technologies and to assist improvements. Although exergy applications in power systems and electrical technology are uncommon, exergy nevertheless identifies clearly potential reductions in thermodynamic losses and efficiency improvements. Various devic...

This year the 8th WSEAS International Conference on DATA NETWORKS, COMMUNICATIONS, COMPUTERS (DNCOCO '09) was held in the Morgan State University, Baltimore, USA, November 7-9, 2009. The conference remains faithful to its original idea of providing a platform to discuss network architecture & design, synchronous networks, fiber design and fabricati...

This year the 11th WSEAS International Conference on MATHEMATICAL and COMPUTATIONAL METHODS in SCIENCE and ENGINEERING (MACMESE '09) was held in the Morgan State University, Baltimore, USA, November 7-9, 2009. The conference remains faithful to its original idea of providing a platform to discuss new mathematical methods and computational technique...

This year the 2nd WSEAS International Conference on SENSORS and SIGNALS (SENSIG '09), the 2nd WSEAS International Conference on VISUALIZATION, IMAGING and SIMULATION (VIS '09) and the 2nd WSEAS International Conference on MATERIALS SCIENCE (MATERIALS '09) were held in the Morgan State University, Baltimore, USA, November 7-9, 2009. The conferences...

This year the 2nd WSEAS International Conference on NATURAL HAZARDS (NAHA '09), the 2nd WSEAS International Conference on CLIMATE CHANGES, GLOBAL WARMING, BIOLOGICAL PROBLEMS (CGB '09) and the 2nd WSEAS International Conference on URBAN REHABILITATION AND SUSTAINABILITY (URES '09) were held in the Morgan State University, Baltimore, USA, November 7...

In this paper, on basis of heat transfer mechanism, some models of transformer thermal and loss of life will be studied. Thermal mechanisms are complex by their own and even more when applied to a complex system, either geometrically either physically, such as the transformer is. However, the required transformer thermal model must be as simple as...

In this article, on basis of heat transfer mechanism, some models of transformer thermal and loss of life will be studied. Thermal mechanisms are complex by their own and even more when applied to a complex system, either geometrically either physically, such as the transformer is. However, the required transformer thermal model must be as simple a...

This article begins with a study of transformer additional losses due to the presence of non-sinusoidal loads, presents existing models to represent these losses and proposes an original model. Consequent increment in transformer loss of life is studied by means of a sensitivity analysis of the model to transformer rated power, load amplitude, ther...

The study of predictive control of temperature in oil-filled transformers is performed in this work. In order to study transformers thermal loss of life, complex models taking into account electrical and thermal characteristics are required. Moreover, the precision of thermal models is dependent upon the exactitude of the parameters. The work prese...

The study of predictive control of temperature in oil-filled transformers is performed in this work. In order to study transformers thermal loss of life, complex models taking into account electrical and thermal characteristics are required. Moreover, the precision of thermal models is dependent upon the exactitude of the parameters. The work prese...

This article begins with a study of transformer additional losses due to the presence of non-sinusoidal loads, presents existing models to represent these losses and proposes an original model. Consequent increment in transformer loss of life is studied by means of a sensitivity analysis of the model to transformer rated power, load amplitude, ther...

This study aims to demonstrate, in terms of sustainability, the usefulness of the embodied energy and exergy concepts for analyzing systems which convert energy or matter, particularly, an electric transportation system in a dualist view, technical and environmental. It is argued in the paper the sustainability framework, which revealed tentative s...

The real world processes involving energy and matter need to be linked to the technical and environmental engineering education, design and operation. Energy systems involving coversion chain processes are highly irreversible and, consequently, they could have low exergy efficiencies. In electric railway transportation systems, achieved energy prov...

Non-fossil fuel energy options can help humanity combat climate change and provide the opportunity for sustainable energy solutions. Non-fossil fuel energy options are diverse, ranging from renewables like solar, wind, geothermal, hydropower, biomass, ...

An important issue of medical world concerns the creation of systems for online medical parameters monitoring. The solution is to pervade into computing systems which have the capabilities of monitoring, data acquisition and data transfer from medical devices. In the paper the medical measurement devices which are realized on basis of optoelectroni...

Within the present industrial society the humans further challenges are doubtless related to a sustainable industrial metabolism, integrating industrial activity into ecological systems. An approach of technical systems and ecological systems as parts of the same system, the industrial ecosystem, could provide a holistic view of the interactions an...

This paper analyses transformer loss of life attending to the realistic variability of both structural and functional parameters. The article begins with the modelling of load and ambient temperature profiles, by means of chronological series theory. A simple additive model is proposed and validated with realistic data, loss of life resulting from...

Traditionally, the basic concepts of energy, exergy and embodied energy are founded in the field of physics. But since these concepts have environmental, technical and economical significance as well, it may be advantageous to explain, interpret and apply them in a more universal manner in line with their multidisciplinary traits. Some argue that s...

The paper presents experimental results on modelling and simulation of vehicle suspension. Testing the performance practice of suspension dampers is performed using a device called Spider8, which is achieved by a mathematical model to assess the behaviour and performance suspension behaviour experimentally tested through simulation environment unde...

The manner is illustrated in which energy conversion processes during electric train operation can be analyzed using exergy. Loss of exergy reflects a loss of potential of energy to do work. Following the notion that life on Earth demonstrates sustainable energy conversion, we assess the viability of transportation systems according to the model of...

An abstract is not available.

The purpose of this article is to analyse the different thermal models proposed in specialised bibliography for oil-immersed distribution transformers as well as their application domain. Improvements to increase transformer thermal model accuracy are presented and the validation for the introduction of each model improvement is based upon the simu...

Physically, dynamic regimes of electric transformers are characterized by the variation in time of "electromagnetic status". Mathematically, the processes dynamics of electric transformers are described by differential equations which, in most cases, are nonlinear. Based on the mathematical model equations, in this paper will be presented the struc...

Due to the widespread and easily use of computer calculations, numerical models are fundamental tools for a great number of subjects under study. In order to study transformers thermal loss of life, complex models taking into account electrical and thermal characteristics are required. Moreover, the precision of thermal models is dependent upon the...

Collaborative learning an educational strategies that should be incorpored in all plan of studies in the university careers. It is considered as one of the main learning strategies in the Bologna process. In collaborative practices students are divided ...