bluuebunny/crossref_metadata_2025 huggingface dataset:
Online Student Engagement and Entrepreneurial Intention: Mediating Role of Individual Entrepreneurial Orientation
Authors: Koe Wei-Loon , Krishnan Ramesh , Marmaya Najihah Hanisah
Published: July 2024

Using new digital technology in education has become a reality everyone must accept with the development of Education 5.0. Moreover, online learning is no longer alien to most university students after the COVID-19 pandemic. Currently, the traditionally practical-focused entrepreneurship course is also available online. However, little extant literature has investigated student engagement in online learning. Therefore, this paper aimed to establish a new model to show how student engagement in online learning affected individual entrepreneurial orientation (IEO) and entrepreneurial intention (EI). This paper employed the online student engagement (OSE) model, the concept of IEO and the Theory of Planned Behavior (TPB) in developing the research model. The data were analyzed using partial least squared-structural equation modeling (PLS-SEM). The results indicated that IEO positively affected two elements of OSE, namely emotion and participation. A positive relationship was found between IEO and EI. It further found that IEO mediated the relationships between emotion and EI as well as between participation and EI. Therefore, it concluded that IEO was a crucial determinant of EI and it enhanced the relationship between OSE and EI. This paper produced both literature and practical outcomes. Literary, it produced a new model which explained the relationships among OSE, IEO and EI. Practically, it identified critical factors that higher education institutions could take into consideration in developing student entrepreneurs. It was also critical in supporting Malaysian governmental agendas that focused on developing competitive entrepreneurs, such as the Economic Transformation Program (ETP) and Malaysia Education Blueprint 2015-2025 (Higher Education).
Forgetting аbout traumatic past? On the position of film music composers in post-WWII germany
Authors: Piotrowska Anna
Published: July 2024

This paper presents selected German film music composers who were active in
Germany during the inter-war period as musicians trying to regain their
position and renegotiate their role in the German post-war society marked by
trauma and transition processes. Film music composers were believed to have
stayed above politics and associated with a ?harmless? type of music;
therefore, they could adapt to the new situation comparatively more easily,
particularly since the Allies had already treated musicians ambivalently.
While pinpointing the reasons behind such a lenient attitude towards film
music composers, the paper also touches on those rare cases when film music
composers were actually accused of supporting the Nazi system.
“Two Wild and Crazy Guys‚ and a Gal” - unresolved trauma and Balkan stereotypes in the music of Emir Kusturica’s film Podzemlje (Underground)
Authors: Djordjevic Ana
Published: July 2024

One of the manifestations of unresolved trauma is associated with the use of
Balkan stereotypes and self-Balkanisation in films. In this paper, I explore
the connection between unresolved trauma and the music used to express
Balkan stereotypes, focusing on a case study dedicated to Goran Bregovic?s
soundtrack for Emir Kusturica?s film Podzemlje [Underground] (1995). I
analyse the track ?Mesecina [Moonlight]? featured in the film, and observe
how the music goes hand in hand with the portrayal of some of the main
characters as ?wild Balkan men? associated with a myriad of negative
characteristics and stereotypes.
The songbirds as an inspiration for Byzantine kratēmata
Authors: Apostolopoulos Thomas
Published: July 2024

Byzantine krat?mata, widely known as the terrirem, as part of other, broader
musical works, date approximately back to the eleventh-twelfth century. A
small group of four krat?mata are named after birds (A?dhon - Luscinia
megarhynchos, Potamis - Acrocephalus, Anyfantis and Papadopoula - Parus
major). It is reasonable to assume that the singing of the respective birds
inspired composers to set these krat?mata to music. Studying the related
compositions, as they have been documented in the written tradition of the
Byzantine and the post-Byzantine manuscripts un?til their transcription from
the pre-1814 old stenographic method notation, we report certain
observations that reinforce the initial hypothesis, as well as some parallel
remarks about the phenomenon of creation, establish?ment, and spreading of
this form.
Glucagon Clearance is Decreased in Chronic Kidney Disease, but Preserved in Liver Cirrhosis
Authors: F. G. Grøndahl Magnus , H. Lange Andreas , P. Suppli Malte , Thing Mira , L. Gluud Lise , H. Kofod Dea , Hornum Mads , Van Hall Gerrit , A.J. Trammell Samuel , J. Grevengoed Trisha , Hartmann Bolette , J. Holst Jens , Vilsbøll Tina , B. Christensen Mikkel , B. Lund Asger , K. Knop Filip
Published: July 2024

Abstract It is not completely clear which organs are responsible for glucagon elimination in humans, and disturbances in the elimination of glucagon could contribute to the hyperglucagonemia observed in chronic liver disease and chronic kidney disease (CKD). Here, we evaluated kinetics and metabolic effects of exogenous glucagon in individuals with stage 4 CKD (n =16), individuals with Child-Pugh A-C cirrhosis (n = 16) and matched control individuals (n = 16), before, during and after a 60-minute glucagon infusion (4 ng/kg/min). Individuals with CKD exhibited a significantly lower mean metabolic clearance rate of glucagon (14.0 [95% CI 12.2;15.7] mL/kg/min) both compared to individuals with cirrhosis (19.7 [18.1;21.3] mL/kg/min, P < 0.001) and to control individuals (20.4 [18.1;22.7] mL/kg/min, P < 0.001). Glucagon half-life was significantly prolonged in the CKD group (7.5 [6.9;8.2] minutes) compared to individuals with cirrhosis (5.7 [5.2;6.3] minutes, P = 0.002) and control individuals (5.7 [5.2;6.3] minutes, P < 0.001). No difference in the effects of exogenous glucagon on plasma glucose, amino acids, or triglycerides was observed between groups. In conclusion, chronic kidney disease, but not liver cirrhosis leads to a significant reduction in glucagon clearance, supporting the kidneys as a primary site for human glucagon elimination. Article highlights · This study was undertaken to gain insights into the elimination of glucagon in humans, as this is an important, yet not fully uncovered part of glucagon physiology · We investigated whether individuals with chronic kidney disease or liver cirrhosis were characterized by an altered elimination of glucagon · We found that individuals with stage 4 chronic kidney disease exhibit a significantly reduced elimination of glucagon, while patients with liver cirrhosis have a preserved glucagon elimination · Our findings support the kidneys as the prevailing site of glucagon elimination in humans and shed light on glucagon-related pathophysiology in liver and kidney diseases
Anthropology and History in Local Wisdom
Authors: Iqbal Uqbah
Published: July 2024

The book titled Anthropology and History in Local Wisdom contains 15 chapters. All titles are interconnected between history and anthropology. The titles are Almanak and Pelangkah: A Guide to Javanese Nomads and the Duano Tribe; International Barter Trade and Socioeconomic Change: A Case Study of Orang Asli Kuala in Pontian, Johor; The Stability and Persistence of Malays in Western Australia Effects of Cognitive and Psychological Influences; Local Wisdom in Traditional Beauty and its Transformation; The Dynamism and Vitality of the Proto-Malay Orang Asli Language in Malaysia; Shipping Technology and the Legacy of Malay Navigation in the Malacca Straits in the 18th and 19th Centuries; “Antu” in the Traditional Culture of the Iban Community. Other titles are Knowing Culture: The Value of Local Knowledge in Sabah; Local Knowledge of Urban Fishermen in Gaya Island, Kota Kinabalu, Sabah; Fishing and Catching Seafood: A Local Knowledge Technique in Beserah, Pahang; Honoring Traditional Food Based on Freshwater Fish in Lenggong Valley, Perak; Assimilation of Malay Culture Against Immigrant Culture in Malaysia; Origin of Minangkabau Custom; The Meugang Tradition in the Acheh Community in the City of Medan, North Sumatra and the Epistemological Reconstruction of the Islamic Malay World View. All of these writings are the result of research by academics in various fields related to local wisdom in the region. So overall no matter what the field, almost all of them are related to local wisdom. This certainly symbolizes the contribution of the knowledge of past communities in this region that have developed in almost all fields of knowledge. There are many benefits that can be gained from reading this book.
Unveiling the Technological Tapestry: Exploring the Transformative Influence of AI and ML across Diverse Domains
Authors: R Jain
Published: July 2024

In recent times, Artificial Intelligence (AI) and Machine Learning (ML) have become increasingly prevalent, fundamentally altering various industries and modernizing conventional methods. Their influence extends across a wide spectrum, ranging from financial technology to healthcare, robotics to quantum computing. This article offers an extensive examination of the intricate domain of AI and ML, highlighting their advancements and consequences across different sectors. Drawing upon scholarly research, patent disclosures, and academic literature, it investigates the pervasive impact of AI and ML on global industries and societies. Covering fundamental concepts and state-of-the-art applications, the article explores the interdisciplinary essence of AI and ML, emphasizing their transformative capacity and the ethical dilemmas accompanying their implementation. Through this analysis, the article seeks to illuminate the significant ramifications of AI and ML technologies, emphasizing the necessity for responsible management to maximize their benefits while addressing potential challenges.
Coordinated Interference of Multiple UAVs on Networked Radar
Authors: Zhao* Bin , Zou Wenfei
Published: July 2024

Aiming at the characteristics of strong anti-jamming ability of networked radar, this paper studies the trajectory optimization problem of multi-UAV cooperative deception jamming of networked radar, and proposes a trajectory optimization model of multi-UAV cooperative deception jamming of networked radar. Considering the factors such as speed, altitude, heading Angle, turning radius, etc., the 3D motion and flight path optimization model of UAV are established. The hierarchical decomposition method is used to simplify the problem, and the collaborative interference path is planned by search and particle swarm optimization. The principle of false target deception jamming is analyzed, the geometric model and motion equation of a single UAV are established, the constraints of cooperative deception and the cost function are determined, and the UAV track is obtained. The layered planning is used to optimize the UAV cooperative motion, increase the actual conditions, improve the fitness function of particle swarm optimization algorithm, and adapt to different radar systems.
Uncontrolled Dumpsite Activities as a Catalyst for Ecosystem Services Distortion and Biodiversity Loss in the Aluu Precinct of Rivers State
Authors: N NWAKIRI
Published: July 2024

The processes of disposing of household and industrial waste have in recent times become a daunting task for waste managers in growing economies like Nigeria. It has become so difficult to find a suitable site to locate receptacles that most waste managers choose to harness and convert derelict mine sites such as borrow pits as final dumpsites. Such actions have over time caused colossal damage to the environment leading to other health-related hazards and distortions in the ecosystem in addition to phenomenal biodiversity loss. This study was designed to assess the effects of waste dumpsites on biodiversity and ecosystem services within the Aluu Precinct of Rivers State. The study is a cross-sectional survey that adopted the quantitative strategy as it aims to measure and test the effect of waste dumpsites on biodiversity and ecosystem services within the Aluu Precinct using objective and reliable methods. A representative sample of airborne bacteria was collected at three different points within the dumpsite using a High-Volume Air Sampler (HVAS). The study used a plate count method to identify and quantify the airborne bacteria from the HVAS samples, and further deployed descriptive statistics to analyse the data and answer the research questions. Findings indicate that there is a concentration of airborne microorganisms in the three samples collected at different distances from the dumpsite, result indicates that dumpsite activities have a negative impact on the biodiversity and ecosystem services in the study area, as the concentration of almost all the microorganisms except E. coli exceeds the safety limits in all three samples, implying a high level of bioaerosol contamination in the air near the dump site. The study recommends amongst others constant engagement with the local authorities, communities, and waste management agencies to ensure effective waste disposal and minimize environmental harm. Establish long-term monitoring programs to track biodiversity recovery. Measure changes in species diversity, soil quality, and vegetation.
The Difference of The Achievement in English Speaking Abilities Between the Students in Front and Back Rows of Seating Position in The Classroom
Authors: Annisa Nur
Published: July 2024

Teaching is a profession that requires specialized skills and knowledge to impact significantly on student learning. One factor associated with improved achievement among learners is the position at which they sit in a classroom. This means that where students sit in the classroom may affect their academic achievement. Many researchers believe that students who sit in the front tend to have higher scores compared to the ones who sit in the back. Because teachers tend to direct more questions to students seated in the front rows of the classroom. Students seated at the back interact more with each other, in a disruptive way, thus minimizing their opportunity to learn. Educators should pay attention more to the classroom seating position of the students in order to perform highly estimated teaching learning process. Consequently, seating position may give significant difference in helping students to get good quality of teaching learning process.The aim of this research was to find out the significant difference of the ahievements between students that sit in front and back rows. This study was focused to find out the difference of the achievement in English speaking abilities towards 2016 and 2017 academic year students of English Department IAIN Palangka Raya.The method of this research was quantitave and ex post facto was the design of the research. The sample of the research was 2016 and 2017 academic year students of English Department at IAIN Palangka Raya consisting of 40 students taken by random sampling technique. The researcher used two kinds of instruments to collect the data of two variables. The instruments were questionnaire and speaking test. The first instrument was speaking test. Oral proficiency scoring categories from David P. Harris (1969) was used as guidance to measure students’ speaking ability by conducting ‘Introdcution’ as the topic. In analyzing the data. The second instrument was Students’ Perception on ORSA (Orderly Rows Seating Arrangements) questionnaire sheet develoved by Slamet Wahyudi (2010) which contains of 20 items with 5 point Likert-scale. This questionnaire used to find out students’ seating position preference. The researcher measured the result of questionnaire and the result of speaking test by using Independent Sample Test.The result of this research showed that the significance (2 tailed) is 0.000. It means 0.05>0.000 which showed Ha accepted and Ho rejected. The result explained that there is significant difference of the achievement n English speaking abilities between students in front and back rows of in the classroom of English Department IAIN Palangka Raya.
Content Analysis in the English Textbook “Bahasa Inggris” for the eleventh grade Students of Senior High School
Authors: 12 Yuvia
Published: July 2024

The purpose of this study was to analyze and determine the suitability and suitability of the contents of the teaching materials in the form of "Bahasa Inggris" textbooks used during the learning and teaching process based on textbook evaluation criteria in the opinion of experts, namely Cunningsworth (1995). This study uses a descriptive qualitative method with content analysis based on Cunningsworth's theory. Data was collected from a textbook entitled "Bahasa Inggris" for grade eleventh students at SMAN 1 Timpah published by the Indonesian Ministry of Education and Culture by reading material that focuses on content analysis. The focus of this study is to analyze 2 chapters of an English textbook. The results of the study prove that the contents of a textbook entitled Bahasa Inggris can be said to be good and meet the Cunningsworth criteria and curriculum standard 13.
REALIZATION OF COMPETITIVE GOVERNMENT BUREAUCRACY THROUGH THE REINVENTING GOVERNMENT APPROACH
Authors: Afrijal Afrijal , Herizal Herizal , Yanza Fabri , Helmi Helmi , Kamaly Nurul , Usman Bustami
Published: July 2024

This study focuses on the realization of a competitive government bureaucracy through the approach of reinventing government. The slow bureaucracy and low quality of services remain issues that demand the attention of government bureaucrats. This paper aims to provide a comprehensive overview of realizing a competitive bureaucracy by applying the principles of reinventing government. The method used in this paper is qualitative, employing a library research approach. The results of the discussion indicate that reinventing government serves as a concrete solution for government agencies to improve their performance in administration. The flexibility of issues and public needs requires the government to continuously innovate. Enhancing performance systems, capacity, and the quality of government apparatus can serve as the main improvements for realizing a competitive government.
Application of PSO algorithms for VPP operation optimization
Authors: Kaczorowska D. ,   Faculty of Electrical Engineering Wroclaw University of Science and Technology. Poland, Rezmer J. , Sikorski T. , Janik P. ,   Tauron Ekoenergia Obroncow Pokoju Jelenia Gora. Poland
Published: July 2024

The random character of generation of distributed energy resources and their increasing numbers cause problems with power balancing in distribution grids. One approach to mitigate the balancing issue is deployment of a virtual power plant VPP with accordingly dimensioned components, i.e. renewable generation and storages. It is also necessary to control the power flow in a way that production and consumption balance would not be threaten. From an investor's perspective, profits and costs are important. The components of a VPP installation, such as generators and storage systems must meet the conditions for optimal economic and technical performance. Due to the increasing number of optimization variables, and thus the complexity of the objective function, it is necessary to use advanced tools for effective solution for optimization problems. The paper presents the optimization of PV and electric energy storage for selected operational scenario using particle swarm algorithms. The proposed method allows for substantial improvement of power losses in the power grid and decrease of necessary investment. Predefined power consumption target profiles were reached even with reduced PV power and storage capacity. Real production and consumption curves were used in the presented analysis. Key words Energy storage, particle swarm optimization, photovoltaic system, virtual power plant.
State estimation for large power distribution systems
Authors: Besada Juez J. ,   Department of Software Engineering Qwi Tecnologías de la Información. Madrid. Spain, González Bordagaray A. , Ferro Vázquez J. , Plaza González G. ,   Operation Technical Services Iberdrola Distribución Eléctrica Complejo. Bilbao. Spain,   Operation Technical Services Iberdrola Distribución Eléctrica Complejo. Bilbao. Spain,   Department of Software Engineering Qwi Tecnologías de la Información. Madrid. Spain
Published: July 2024

This article presents the modifications and improvements that have been included over the classic formulation of the state estimation to be able to run in real networks with large power distribution systems. Improvements include a new penalty term that keeps bus consumption or power generation within an allowed band and the inclusion of dynamic elements such as voltage regulators and capacitor batteries. A complete algorithm is presented that is capable of operating on large power systems in near real time. This algorithm and the results have been tested with numerous cases of real distribution networks covering large geographical areas, obtaining very good results and demonstrating the enormous usefulness of this approach. Key words State estimation, measurement quality, large power distribution systems.
Analysis of Impact of One Unit of Distributed Photovoltaic Generation in Power Quality of a Rural Property
Authors: Santos E. A dos ,   Centro de Engenharias e Ciências Exatas (CECE) UNIOESTE, State University of Western Paraná .Foz do Iguaçu. Paraná. Brazil, Ferreira L.R.A. , Almeida A.B. , Otto R.B. , Vendrame M. ,   Automation and Simulation of Electrical Systems Laboratory (Lasse) Itaipu Technological Park (PTI). Foz do Iguaçu.; Paraná. Brazil,   Centro de Engenharias e Ciências Exatas (CECE) UNIOESTE, State University of Western Paraná .Foz do Iguaçu. Paraná. Brazil,   Automation and Simulation of Electrical Systems Laboratory (Lasse) Itaipu Technological Park (PTI). Foz do Iguaçu.; Paraná. Brazil,   Renewable Energy Advice Itaipu Binational (ITAIPU) Foz do Iguaçu. Paraná. Brazil
Published: July 2024

This paper presents the analysis of the power quality before and after the installation of distributed photovoltaic generation units at the delivery point (distributor/consumer) of a rural property dedicated to milk production in the city of Medianeira, located in the western region of the state of Paraná. Measurements of the aspects that describe the energy quality of the property in question, such as steady state voltage, power factor, frequency, fluctuation, unbalance and voltage harmonics, and short duration voltage variation were performed. The values obtained in these measurements were then compared to the limits considered adequate, according to the procedures of distribution of electric energy in the national electrical system. To carry out these measurements an IMS power quality analyzer model PowerNET PQ - 700 G4 was used. It was found that the limits of three aspects related to the quality of electric power were violated prior to the installation of the photovoltaic panels, which are the power factor, voltage fluctuation and short voltage variations. After the installation of the system, there were improvements in the steady state voltage levels. In addition, a reduction of power factor and fluctuation, imbalance and harmonic distortions of voltage were obtained. The work is finished suggesting solutions to the most relevant problems related to product quality. Key words Power Quality, Distributed Generation, Photo-voltaic Solar Energy.
Performance of 1.4 kW Grid connected desert type PV A
Authors: Al-Badi H. ,   Department of Electrical & Computer Engineering College of Engineering, Sultan Qaboos University. Oman
Published: July 2024

This paper analyzes the performance of desert type photovoltaic 1.4 kWP grid connected plant. The system was installed in College of Engineering, Sultan Qaboos University, Oman and was monitored since April 2012. The experimental results show that the total measured annual energy produced was 2217.6 kWh with average system efficiency of 15% for the first year. The average capacity factor for the system was 17%.. Key words Desert type PV, PV performance, Oman
Preliminary study of a concept of wind-tidal turbine coupling using functional similarities of real time emulation
Authors: Nichita Cristian ,   University of Le Havre - Normandy Research Group in Electrical Engineering and Automatics GREAH, Le Havre Cedex. France, Ashglaf Mohmed , Amara Yacine , Jo Chul H. ,   Inha University, Ocean Engineering Laboratory, Inchoen. Korea
Published: July 2024

Horizontal tidal turbine presents important similarities to the wind turbine power systems. Therefore, it would be useful to exploit this similarity to study this important source of energy. In this paper, a new concept of a hybrid offshore windtidal power generation systems coupled electromechanically is studied. Furthermore, a 'time virtual' approach is also presented in order to investigate and compare the energy potentials for given tidal and wind sites. Both the new concept of coupling and virtual time method are simulated in Matlab/Simulink and applyied on Real Time Emulator. Obtained results are presented and disscussed. Key words Wind turbine, tidal turbine, hybrid system, real time emulator.
Integration of Thermoelectric generators (TEG) in Solar PVT panels
Authors: Bayod-Rújula Ángel A. ,   CIRCE Institute - Department of Electrical Engineering, University of Zaragoza. Spain, Martínez-Gracia Amaya , Del Amo Alejandro , Cañada Marta , Usón Sergio , Uche Javier , Tejero Juan A. ,   CIRCE Institute - Department of Mechanical Engineering, University of Zaragoza. Spain,   Abora Solar S.L. Advanced solar energy. Zaragoza. Spain,   Abora Solar S.L. Advanced solar energy. Zaragoza. Spain,   CIRCE Institute - Department of Mechanical Engineering, University of Zaragoza. Spain,   CIRCE Institute - Department of Mechanical Engineering, University of Zaragoza. Spain,   CIRCE Institute - Department of Electrical Engineering, University of Zaragoza. Spain
Published: July 2024

Photovoltaic-thermal hybrid panels (PVT) simultaneously generate electricity and heat with a greater overall efficiency than photovoltaic (PV) and thermal (ST) panels independently. Hybrid PVT-TEG intends to go a step further by integrating thermoelectric modules (TEG) that, based on the Seebeck effect, produce electricity from a temperature difference, thus allowing an additional production of electricity and thus an increase of energy efficiency. In this paper, the design and construction of an experimental installation, consisting of two solar collectors PVT, one of them with 19 TEG modules integrated is presented. This prototype will allow to observe the increase in the electrical production that can be obtained by introducing TEG in PVT modules and the differences in the behaviour (yields and W/Q ratio) between modules with and without TEG. Key words Photovoltaic-thermal hybrid panels (PVT), Thermoelectric generators (TEG), Solar energy; Energy efficiency
Global Solar Energy availability model and use in relationship to Ecological Human imprint: Economic Sustainability Impact and Assessment
Authors: Shakir Hanna Safwat H. ,   Texas Gulf Coast Environmental Data (TEXGED), College of Engineering Prairie View A&M University, Texas. USA, Obiomon Pamela , Osborne-Lee Irvine W. , Cesaretti Gian Paolo , Misso Rosa ,   Simone Cesaretti Foundation, Somma Vesuviana (Na). Italy,   University of Naples Parthenope – Department of Economic and Legal Studies. Italy
Published: July 2024

The present study is to assess the solar-energy extraction from the global Earth land, the continuation demands and the availability use in relation to human population growth in the world through the modeling of different scenarios. For the last few years, global energy becomes the most important commodity for the continuation the life on this Earth. This is due to the decreasing the non-renewable resources such as oil. According to our model, the human population growth in the world will be between 9.5 to 11.00 billion people living on this earth by year 2050 at the current trend of human population growth rate, and we may be facing with shortening of availability of energy. It is important to stress that the energy should be replenished through non-tradition energy supply, but we have to concentrate on the renewable energy, which we can develop to the extent of harvesting this energy in efficient ways. An example for the needs of energy from the land is to calculate how much the Earth can be supporting the human beings. For this regard, if each human being is required to live daily is in need for 2000 calories/per day on an average from the food. This means that the global Earth size has to produce about 15000 billion calories/day and 5475000 billion calories per year as the current estimate of human population of the earth (i.e. 7.5 billion people in year 2017). The question is the Earth can produce these calories to support 7.5 billion people, and we need more calories when the human population grows to be more than 9.5 billion people in the year 2050 in this Earth. This is only for the food that we are consuming and what about another required energy necessity for our continuation of life for production of other commodities that we are in need such as energy for fulling our cars, trucks and other factories. Therefore, solar engineering harvesting from the Earth should be important, and we have to think how we accomplish it. Additionally, we need to sustain our environment by conserving our water resources, and keeping our global climate environmentally in best condition to sustain the land economic and social standards. Further, in this paper, we are discussing the impacts of changing different parameters that affect global energy in this Earth, and what are the useful lessons that we can learn from it. Furthermore, we assess the availability of solarenergy and how to harvest and economic aspects of it. This will lead to sustainability of non-renewable resources such as oil. Keywords Global Solar Energy, Ecological Human Imprint (EHI), Modeling Scenarios of Solar Energy, EarthSustainability-Human Population.
Voltage Sags in the network and inside the Industrial Plants. Case of PSA-Vigo
Authors: Pérez-Donsión M. ,   Electrical Engineering Department. Vigo University. Spain, Soares Oliveira F.T. ,   Department of Electrical Engineering, E.S.T.G., Polytechnic Institute of Leiria. Portugal
Published: July 2024

The main objective of this paper consists in to present the study and measure of the voltage sags and short interruptions in different places along the geography of Galicia measured during two years. We study also the effects and the possible solutions of the voltage sags and short interruptions in one industrial installation, PSA-Vigo, that produce cars. Finally, we will established the corresponding conclusions. Key words Voltage sags, short interruptions, power quality, voltage quality.
18-pulse rectifier in arrangement with coupled three-phase reactor
Authors: Iwaszkiewicz J. ,   Department of Electrical Engineering Gdynia Maritime University. Poland, Muc A. , Mysiak P.
Published: July 2024

The paper presents a proposal of a developed multipulse AC/DC converter built from three 6-pulse bridge rectifiers. These rectifiers are connected in parallel to form an 18-pulse rectifier. The converter is connected to the line by use of coupled reactors working in an specialized circuit. The converter is convenient for supplying high power devices e.g. multilevel inverters and gives a very good performance. Simulation and experimental works prove the usefulness of the converter as well as its respectable properties. Key words Multi-pulse rectifier, 18-pulse rectifier, coupled reactors.
Efeito da fragmentação da vegetação sobre a diversidade de abelhas: comparando padrões de resposta em Euglossini e Meliponini
Authors: Gonçalves Priscila Santos , Freitas Érica Vanessa Durães , Silva Sabrina Celie Oliveira , Bezerra Isaque Clementino , Araújo Walter Santos de
Published: July 2024

As abelhas são importantes visitantes florais que necessitam de ambientes bem estruturados com diversidade de recursos para seu forrageamento. A fauna de abelhas vem sofrendo declínio de espécies devido às mudanças antrópicas dos habitats naturais. O estudo objetivou avaliar se a abertura da vegetação natural afeta as comunidades de abelhas em áreas de Floresta Semidecidual do sudeste do Brasil. Nossa hipótese foi que a abertura da vegetação gera um efeito de borda que afeta diferentemente as comunidades de abelhas das tribos Euglossini e Meliponini. Esperávamos que a ocorrência de abelhas Meliponini fosse maior nas áreas próximas à borda, enquanto as abelhas Euglossini fossem mais frequentes em áreas mais distantes da borda. O estudo foi realizado na região central do estado de Minas Gerais, municípios de Ouro Preto, Itabirito e Sabará. Em cada local foi amostrada uma área aberta pela faixa de servidão de uma linha de transmissão onde foram estabelecidos cinco transectos distanciados a 0 m, 50 m e 100 m da área aberta. Registramos 642 indivíduos de 38 espécies de abelhas. As espécies mais abundantes foram Trigona hyalinata (N = 230), Trigona spinipes (N = 108) e Tetragonisca angustula (N = 86). A riqueza e abundância de abelhas foram significativamente maiores nos transectos das áreas abertas (0m), padrão fortemente afetado pelas abelhas Meliponini. No entanto, analisando apenas Euglossini, encontramos maior abundância no transecto mais distante da área aberta. Nossos resultados corroboram a hipótese de que a abertura da vegetação afeta diferentemente as abelhas Euglossini e Meliponini.
DEVELOPING CUCUMBER CANDIDATE LINES BASED ON FRUIT SKIN COLOR
Authors: Muhammad Adelin Nazhirin  , Rajiman Rajiman , Elea Nur Aziza
Published: July 2024

This study aims to assemble cucumber strain candidates based on the diversity of fruit skin color. This research was conducted at Celeban Teaching Factory of Agricultural Development Polytechnic Yogyakarta-Magelang campus, Yogyakarta, Indonesia from February to June 2023. The research object consisted of two cucumber varieties as parental and two first derivatives or First Offspring lines from reciprocal crosses of two parental lines. The research method used a single-plant experiment by planting and observing each plant of the cross. The crossing was carried out by the double-cross method reciprocally to obtain two numbers of derivative plants, for each number planted as many as 80 plants so that there was a population of 160 derived plants and eight parental plants for each parental strain as a comparison. The parameters in this study included the intensity of green leaf color, the basic color of the fruit skin, the intensity degree of the basic color of the fruit skin, the tip shape of the fruit, the base form of the fruit and the cut of the crosscut fruit. The research’s results from the observed population obtained a diversity of fruit skin colors classified into 4 clusters of the candidate lines, namely bright yellow, bright green, medium green, and dark green fruit skin clusters.
INFLUENCE OF PERCEPTION, PARTICIPATION AND IMPLEMENTATION CORPORATE SOCIAL RESPONSIBILITY PROGRAM OF PT. NUSA HALMAHERA MINERALS ON NORTH HALMAHERA FARMERS' INCOME
Authors: Hohary Yunelfi Musraino , Sunaryanto Lasmono Tri , Yuliawati Yuliawati
Published: July 2024

The agricultural industry is crucial for the national economy's growth, and the government is committed to advancing development policies. However, challenges persist, necessitating collaboration between the private sector, government, and other stakeholders. This study examines the impact of the Corporate Social Responsibility program on farmers' income in North Halmahera Regency. The study was carried out specifically in the districts of Kao Teluk, Malifut, Kao, Kao Barat, and Kao Utara, between December 2022 and March 2023. The data utilized in this study were gathered through interviews and a questionnaire administered to one hundred respondents, specifically farmers who had benefited from the Community Development and Empowerment of Corporate Social Responsibility program and were deliberately selected using a purposive sampling method. The research employed the Structural Equation Model approach for data analysis and processing, utilizing Microsoft Excel and the SmartPLS application version 4. According to the study's findings, farmer participation and perceptions significantly and positively impacted the implementation of the Corporate Social Responsibility program. Similarly, smallholder participation, perceptions, and the execution of the Corporate Social Responsibility program have a substantial and favorable impact on farmers' income. Enhanced farmer participation is directly proportional to improved farmer perception, thereby facilitating the successful execution of the CSR program and guaranteeing favorable outcomes, impacts, and agricultural sustainability-thereby augmenting farmers' incomes.
Intracellular signaling involved in the programmed neutrophil cell death leading to the release of extracellular DNA traps in thrombus formation
Authors: Sveshnikova A. N. , Adamanskaya E. A. , Korobkina Yu.-D. D. , Panteleev M. A.
Published: July 2024

The formation of extracellular DNA traps by neutrophils, or NETs (neutrophil extracellular traps) plays an essential role in many pathological processes related to hematological, oncological, and immunological diseases. This mechanism of the programmed cell death of neutrophils and other leukocytes appears to be also involved in the pathogenesis of thrombosis and thrombotic complications of a variety of disorders. In this review, we discuss the pathways of intracellular signaling leading to neutrophil activation in thrombosis and hemostasis. Even though the biochemical reactions in a cell are quite well investigated, the regulation of activity of specific proteins involved in NETosis, such as NADPH oxidase (NOX) and protein-arginine deiminase (PAD4), requires further investigation. Current approaches to the pharmacological modulation of NETosis are also specifically addressed here.
Guideline for advising community enterprise entrepreneurs on entering the digital marketplace
Authors: Saringkhan Benchawan , Chienwattanasook Krisada
Published: July 2024

The spread of the coronavirus disease in 2019 (COVID-19) in Thailand has led to a lack of liquidity and income for entrepreneurs, increasing the variety of distribution channels compared to store sales. This will be a solution for businesses struggling and creating value to raise the income levels of community enterprises in Thailand. This was an integrated and participatory action research using qualitative techniques through observation, interviews, recordings, analysis, and interpretation of the operational characteristics of community enterprises from field visits for consultation. This study aimed to examine the problems and obstacles of online selling by community enterprise entrepreneurs and to find guidelines for advising lead entrepreneurs in the Digital Market. These 25 community enterprise entrepreneurs produced community herbal products in Thailand. The research findings were analyzed using grounded theory according to the research objectives. From the research results, it is possible to summarize the problems and obstacles faced by entrepreneurs in selling products online among community enterprise entrepreneurs owing to the lack of knowledgeable administrators and the decline in demand for products affected by the COVID-19 pandemic. Furthermore, barriers to laws, regulations requirements related to cannabis products included legal controls only for cultivation and the production process until the product was sold, and production capacity could not be produced to meet the demand when there was a large volume of orders. Solutions were as follows: increasing skills and knowledge for entrepreneurs, especially in the potential; finding a way to pass on the business to the new generation to continue the business; using strategies to create cooperation with other enterprise networks and government agencies; creating online selling channels through various platforms; increasing funding to develop production processes; and using technology to create competitive advantages and marketing planning and delivery to make online sales an essential channel.
Digital skills as sustainable frame of human resource competitiveness: A comparative approach
Authors: Mihajlović Iris , Djevojić Cvijeta , Stanković Marino
Published: July 2024

Imagining people’s functions in everyday life and work without the use of ICT, seems difficult. Their application is ubiquitous everywhere, regardless of which aspect it is viewed from, because it has a strong function in ensuring the competitiveness of various systems at the micro and macro levels. Numerous national and multinational strategies try to encourage educational systems to put a greater focus on ICT to more efficiently acquire skills, competencies, and knowledge, which should represent added value to all generations in the future. This article analyzes the progress of the ICT development index (IDI) in Scandinavian countries by comparing these countries in the European region. It is known that the Scandinavian countries belong to that part of the countries that have recognized the importance of involving ICT in education programs, which improves the economy of a certain country. Given this, the research reveals how ICTs play a key role in improving socio-economic development in Scandinavian countries.
Comportamiento de la UVR en el largo plazo
Authors: Taylor-Conto Evelyn Lucía , Conto-López Romario Ademir
Published: July 2024

En este artículo se implementan diferentes técnicas para predecir la unidad de valor real colombiana (UVR), basándose únicamente en el histórico de su comportamiento. La UVR representa el poder adquisitivo basado en la variación del índice de precios al consumidor (IPC) para el mes calendario inmediatamente anterior al calculado, además muchos créditos de vivienda están indexados a la UVR en Colombia, permitiendo que las entidades financieras conserven el poder adquisitivo del dinero prestado. Para el estudio son consideradas técnicas de pronóstico mediante modelos SARIMA, regresión lineal, suavizamiento Holt-Winters aditivo y multiplicativo, y redes neuronales artificiales. De acuerdo con el análisis, se obtiene que la mejor técnica para realizar predicciones al final del ciclo estacional es el suavizamiento Holt-Winters multiplicativo y para predecir a mitad del ciclo estacional es un modelo SARIMA (1,1,1) (0,1,1).
Análisis de reputación empresarial y de engagement en Instagram: Una mirada comparativa a través de rankings
Authors: Rojas de Gracia María Mercedes , Muñoz María M. , Gomar-Lomeña Jesús
Published: July 2024

En la actual era digital, la reputación empresarial y las redes sociales están estrechamente ligadas, ya que estas últimas han transformado la manera en que las empresas interactúan con sus clientes y, consecuentemente, la forma en que son percibidas. Esta investigación compara el ranking de las empresas con mejor reputación en España generado por Merco (Monitor Empresarial de Reputación Corporativa) con un ranking de engagement en Instagram, de realización propia, obtenido a través del método multicriterio TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution). Los resultados indican que las redes sociales son cada vez más importantes y una mala gestión de las mismas puede tener un efecto multiplicador negativo en la reputación de la empresa, si bien lo contrario no es necesariamente cierto. Por otro lado, se muestra una disparidad del grado de engagement entre empresas directamente relacionadas con la tecnología y el resto. Se discuten las implicaciones teóricas y prácticas de estos resultados.
Mobile (wireless) telecommunication sector: an Indian perspective and PESTLE analysis
Authors: Patel Chandrahash , Sinha Kunal
Published: July 2024

Revolutionary changes in how people interact while travelling at a distance have given rise to several mobile communication tactics. Numerous generations of Mobile telecommunications/telephony have progressed as 1G, 2G, 3G, 4G, 5G, and 6G (now under research). However, in the context of India, mobile telephony can be realized from 2G. The sector has directly or indirectly been impacted by political, social, economic, technological, legal, and environmental (PESTLE) aspects. Therefore, the study objectives are first to discuss the (mobile) telecom sector evolution outline and, second, the factors that contributed to sectoral development by the PESTLE framework. The conceptual foundation of the work is secondary sources.
Amplitude spectrum correction to improve speech signal classification quality
Authors: Gmyrek Stanislaw , Hossa Robert , Makowski Ryszard
Published: July 2024

The speech signal can be described by three key elements: the excitation signal, the impulse response of the vocal tract, and a system that represents the impact of speech production through human lips. The primary carrier of semantic content in speech is primarily influenced by the characteristics of the vocal tract. Nonetheless, when it comes to parameterization coefficients, the irregular periodicity of the glottal excitation is a significant factor that leads to notable variations in the values of the feature vectors, resulting in disruptions in the amplitude spectrum with the appearance of ripples. In this study, a method is suggested to mitigate this phenomenon. To achieve this goal, inverse filtering was used to estimate the excitation and transfer functions of the vocal tract. Subsequently, using the derived parameterisation coefficients, statistical models for individual Polish phonemes were established as mixtures of Gaussian distributions. The impact of these corrections on the classification accuracy of Polish vowels was then investigated. The proposed modification of the parameterisation method fulfils the expectations, the scatter of feature vector values was reduced.
Beamforming in near-field - metaheuristic approach and experimental tests in an anechoic chamber
Authors: Wielgus Agnieszka , Szlachetko Bogusław , Łuczyński Michał
Published: July 2024

A set of microphones spatially arranged in space in a specific pattern is called a microphone array. It can be used to extract and enhance the signal of interest from its observation corrupted by other interfering signals, such as noise or to estimate the direction of arrival of a source. In this paper we focus on a problem in which the desired signal (speech signal) is interfered by other signal with fully overlapping bandwidth but with different localization. Our goal is to attenuate the interfering signal. We experimentally study the method in which microphones do not have to be equally spaced and all information regarding signal phase is hidden in a transfer function of the microphone. We focus on determining the microphones positions and FIR filter coefficients so that the actual output the beamformer is as close as possible to the desired one (the level of speech signal remains unchanged, while the interfering signal is attenuated) in the sense of ���� norm. To solve this problem, we use a metaheuristic algorithm. Next, we construct the array and make an experiment in anechoic chamber. The initial results of the experiment show that the proposed method can be applied for array designing.