bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect Of Product Quality And Location On Purchasing Decisions In Sakara Coffee Consumers
Authors: Wati Novita Anjar , Alam Iskandar Ali
Published: February 2024

This research aims to find out whether product quality and location simultaneously effect purchasing decisions. In this research, quantitative methods are used. The population used was all Sakara Coffee consumers using a purposive sampling formula of 100 respondents. This research uses multiple linear regression analysis as a data analysis method. The software used to process the data is SPSS. The results of this research show that the multiple linear regression analysis is Y = 12.013 + 0.514 X1 + 0.198 X2 with a total percentage of product quality answers of 63% with an average of 82% in the Good criteria. Then 67% of the 100 samples said the location was Good with an average of 78% with Good criteria. This means that if product quality and location increase, purchasing decisions will also increase. So that the development of product quality and location will be able to attract consumer purchasing decisions and become more widely known among the public.
The Effect of Servant Leadership and Organizational Commitment on the Performance of PLN ULP Wayhalim Employees
Authors: Arinaldo Wendi , Efriyanti Farida
Published: February 2024

The purpose of this study is to determine the Effect of servant leadership and organizational commitment on employee performance. Questionnaires were given to 44 respondents and analyzed using multiple linear regression, multiple correlation, ordination, F test and t test. Based on the calculation results of IBM SPSS Statistics Version 26, it was obtained that servant leadership had a positive and significant effect on the performance of PLN ULP Wayhalim employees. This means that the better the servant leadership applied, the better the work of PLN ULP Wayhalim employees. Organizational commitment has a positive and significant effect on the performance of PLN ULP Wayhalim employees. Organizational commitment has a positive and significant effect on the performance of PLN ULP Wayhalim employees. This means that the higher the commitment of employees to the organization, the better the work of PLN ULP Wayhalim employees. Servant leadership and organizational commitment have a positive and significant effect on the performance of PLN ULP Wayhalim This means that the better the servant leadership applied and the greater the commitment of the employee organization, the better the work of PLN ULP Wayhalim employees.
Sand and Dust Storms Impact on Photovoltaic Panels in Saudi Arabia
Authors:   Expert in Applied Climate studies at WMO Sand and Dust Storm Warning Regional Center, National Center for Meteorology, P.O. Box 2749, Jeddah, Saudi Arabia, Alhajji Zakiah , Patlakas Platon ,   Research Associate at Department of Physics, National and Kapodistrian University of Athens, 15784, Athens, Greece, Alexiou Ioannis ,   Expert in Environmental Sciences at Aramco, P.O. Box 31311, Dhahran, Saudi Arabia, Hafez Mohamed ,   Professor in the Department of Geography - Applied Climate, Faculty of Arts, King Saud University, P.O. Box 2456, Riyadh,11451 Saudi Arabia
Published: February 2024

This research aims to assess the spatial potential of solar energy in Saudi Arabia by estimating the total sum and analyzing the spatial variability of solar radiation to determine the best sites for solar energy generation that are least affected by sandstorms in the country. It also explores the effects of sandstorms on solar panels, identifies preventive measures, analyzes their impact on productivity, and recommends best practices for future development. The study utilizes time series analysis to estimate the impact of dust on productivity and identify effective ways to mitigate it. The spatial suitability of solar cell placement in different regions of the country is also analyzed. The study reveals that the Al-Ahsa region is significantly affected by sandstorms, with an average of around 25 sandstorms annually, indicating the region's vulnerability to these environmental phenomena. The western region, specifically the Tabuk station, experiences a lower frequency of about 5.5 sandstorms per year. The Al-Ahsa region shows the highest daily average rate of sandstorms, ranging from 0.4 to 0.7 sandstorms per day, with the highest rates occurring from March to May. In terms of solar energy potential, the northwestern region in Tabuk exhibits the highest average potential of about 6 watts per square meter per day, followed by the southwestern region in Asir with approximately 5.5 watts per square meter per day. These findings provide valuable insights into understanding sandstorm patterns and identifying optimal locations for solar energy production, contributing to sustainable development efforts and climate change mitigation.
Contaminated Money Investigation into the Hygiene Status of some Hospitals as Obtained from Food Outlet
Authors:   Department of Infectious Disease, Faculty of Public Health, University of Benghazi, Benghazi, Libya, Elshebani Asma , Elfaitouri Amal ,   Department of Infectious Disease, Faculty of Public Health, University of Benghazi, Benghazi, Libya, Hebit Allah Mohamed ,   Aljalaa Hospital, Benghazi, Libya
Published: February 2024

This study aims to determine the presence of bacterial contamination associated with currency as obtained from hospital’s food outlet. Samples were randomly collected from cafeteria’s of Benghazi Medical Center Hospital, Benghazi Children's Hospital, and Al Jalaa Hospital. Bacteria isolates belonged to gram negative and gram positive were used to perform antibiotic sensitivity testing. Total count of bacteria from currency found 10 type of bacteria, the highest type of bacteria, Lactobacillus 50%, followed by Acinetobacter 20.3%, Klebsiella 7.4%, Staphylococcus aureus and Escherichia coli 3.7%, while the lowest Staphylococcus epidermas, Pseudomonas stutzeri, Rhizobium radiobacter were 1.8% and no growth 22.8%, the sensitivity of the isolated bacteria showed the Acinetobacter baumanni highest resistant to Augmantine (78%) and lowest to both Ceftazidimde and Aztronam with (11%), the Klebsiella pneumonia shows (100%) resistant to Erythromycin and Oxcilin. While the two sample of Escherichia coli were resistant to Augmantine and Ceftazidime. In addition, the two samples of Staphylococcus aureus were resistant to Erythromycin and Oxcilin (100%), two samples of Staphylococcu epidermidis were resistant to Erythromycin and Oxcilin (100%), while the one sample Pseudomonas spp was resistant to Colastin (100%), the Pantoea spp sample was resistant to both Ceftriaxone and Colastin (100%), while the only sample of Staphylococcus Haemolyticus was resistant (100%) to Erythromycin. Confirming that the contaminated currency spread in the hospital cafeteria was contaminated with disease-causing bacteria.
Career Craft (A Student Training and Freelancing Platform)
Authors:   BSc Honors in Information Technology, College of Computer Science and Information Technology, Sudan University of Science and Technology, Sudan, Al-Zekri Abdul Rahman , Ajbna Ayman ,   BSc Honors in Information Technology, College of Computer Science and Information Technology, Sudan University of Science and Technology, Sudan, Al-Sharif Moammad ,   BSc Honors in Information Technology, College of Computer Science and Information Technology, Sudan University of Science and Technology, Sudan, Esmail Mustafa ,   BSc Honors in Information Technology, College of Computer Science and Information Technology, Sudan University of Science and Technology, Sudan, Osman Niemah ,   Associate Professor in Communication Networks, College of Computer Science and Information Technology, Sudan University of Science and Technology, Sudan
Published: February 2024

As the world continues to rely on technology in all aspects of life, the demand for Information Technology graduates with sufficient background knowledge and necessary practical skills has never been higher. Computer science students are required to keep track of advancements and new trends in the field while maintaining good depth in present technologies. Unfortunately, many fresh graduates face significant challenges when entering the workforce, lacking practical experience and technical skills in the field. To mitigate this problem, students need more exposure to real-world experience and work in a job market environment. This paper presents the design and implementation of Career Craft, a platform that intends to enhance students’ programming and problem-solving skills by providing programming tasks that students compete to solve. Teachers develop and publish programing tasks and students solve them in order to gain points. A teacher is assigned as project manager and selects a group of students based on expertise and experience to develop the requested service. This exposes students to the real-world job environment and provides them with hands-on freelancing experience in these areas. By using the system, students can increase their employability by working as freelancers for clients. The system improves students' skills, increases their chances of employment, and increases their income, while helping clients obtain quality services.
Development, Validity and Reliability Study of the Play Preferences Scale (PPS) for Children Receiving Preschool Education
Authors: Özgenel Songül , Kaya İsa
Published: February 2024

The aim of the study is to develop a Likert-type scale to determine the play preferences of children attending pre-school education. The research was designed and carried out according to the survey research model. Data collected from 3 different study groups were used in the scale development process. The study groups consist of parents of children attending pre-school education in Istanbul Province in the 2022-2023 academic year. The 33-item and 8-dimensional structure obtained after EFA was also confirmed with CFA. Dimensions were determined as solitary play, parallel play, together play, collaborative play, building-building play, dramatic play, games with rules and digital play. It is seen that the reliability coefficients of the scale after EFA and CFA vary between 0.757 and 0.900. In order to distinguish between the lower and upper groups and to make comparisons between the groups, an independent group t test was performed, and it was revealed that there was a difference between the 27% lower and 27% upper groups (p <.05). It was determined that the test-retest values of the game type preferences scale were significant. According to these values, it was determined that the scale gave consistent results. When all studies were evaluated, it was concluded that the play preferences scale is a measurement tool that can validly and reliably measure the play preferences of children receiving preschool education.
Constructivist Beliefs And The Attitudes Towards Computers As Predictors Of Classroom Technology Use Amongst Pre-Service Teachers
Authors: Ishak Adam
Published: February 2024

Despite vast improvements in technology infrastructure and classroom technology implementation across Malaysia, there still remain teachers who fail to seamlessly integrate technology in their lessons. Potential explanations for this behaviour span from low self-efficacy and computer anxiety to personal attitudes and beliefs. Technology has been shown to aid learning and even contribute to an improvement in standardized test results when integrated into the curriculum in a meaningful manner. This study investigates the causes for the reluctance to integrate technology in classrooms. It also looks into whether it can be understood from teachers' attitudes towards computers or from their constructivist teaching beliefs. A correlational research study was conducted with 135 pre-service teachers from 3 public Malaysian universities. Multiple regression analysis was performed to establish the predictive value of the variables. Our analysis showed that teachers’ attitudes towards computers can directly predict how likely they are to incorporate technology in their lessons. However, constructivist beliefs did not predict pre-service teachers’ intention to use technology in the classroom. Additional analysis and t-test found that female teachers were significantly less likely to want to incorporate technology in their lessons when compared to males. We concluded that when teachers’ attitudes towards computers are more positive, they are more likely to use technology in their future lessons. However, this may not apply across the board, with female teachers appearing less likely to utilise technology when compared with male teachers.
Spatio-temporal Analysis of An Invasive Alien Species, Vachellia nilotica, on Rodrigues Island, Mauritius, Using Geographic Information Systems and Remote Sensing Techniques
Authors: Sunkur Reshma , Mauremootoo John
Published: February 2024

Invasive alien species (IAS) constitute a large and growing environmental and socio-economic problem. Tropical islands, one of the richest habitats in the world, are especially vulnerable to invasions because of their island-specific flora and fauna. The aim of this study is thus to assess the viability of monitoring IAS distributions on small tropical islands using Geographic Information Systems (GIS) and remote sensing techniques, focusing on the invasive plant species Vachellia nilotica on the island of Rodrigues as a case study. Freely available satellite images are used to conduct the analysis with resulting classified maps having accuracy levels in the high 70s. The results reveal a significant increase in Vachellia coverage from 2013 to 2023 especially along the coasts while the simulation for 2033 indicates an inward migration from coasts to the central plateau which could have severe repercussions on the native vegetation and human activities. Given the high invasive potential of Vachellia, the present findings can support conservation actions and decision making and even support community participation in managing this IAS. In the broader context, the study demonstrates the potential of GIS and remote sensing as cost-effective tools for monitoring certain invasive plant species.
A Production Inventory Model with Linear Time Dependent Production Rate, Linear Level Dependent Demand and Demand and Constant Holding Cost
Authors: A. M. Atama , B. Sani
Published: February 2024

In this paper, a production inventory model with linear time dependent production rate is considered. The market demand is assumed to be linear level dependent while the holding cost is a constant. The model considered a small amount of decay without having any shortage. Production starts with a buffer stock reaching its maximum desired level and then the inventory begins to deplete due to demand and deterioration. The model is formulated using a system of differential equations and typical integral calculus was used to analyze the inventory problems. These differential equations were solved to give the best cycle length T_1^*=0.8273(303 days), Optimal time for maximum inventory t_1^*= 0.7015, Optimal order quantity Q_1^*=38.3404 and total average inventory cost per unit time TC(T_1)* =170.5004. The cost function has been shown to be convex and a numerical example to show the application of the model has been given. A sensitivity analysis is then carried out to see the effects of parameter changes
The Effects of Adult Separation on Children's Academic and Psychosocial Wellbeing at School: A Case Study of Senga Primary School in Gweru, Zimbabwe
Authors: C. Tadios , M. Michelle , H. Lissa , M. Penelope , N. Bekithemba
Published: February 2024

This study investigated the lived experiences of children from a primary school in the Gweru region of Zimbabwe, whose parents were either separated or divorced. The study was undertaken to ascertain how these learners are psychologically and academically affected by their family situations. The data were gathered using narrative stories, personal narrative diary entries, and interviews. The study was qualitative in nature and aimed to achieve an in-depth understanding of the topic through studying 12 participants, who were purposely sampled. The data were transcribed and analysed using the open-coding technique and thematic analysis. The results revealed that even though the effects of the divorce and separation varied, the participants shared similarities with regard to their emotional states. They invariably experienced feelings of sadness, distress, abandonment, anger, helplessness, and stress. The results also indicated that divorce had a significant impact on the participants’ academic behaviour, school lives and integration at school. The researchers made recommendations which would improve the children’s plight.
A decision support system for the selection of FDM process parameters using MOORA
Authors: Paul Arpan , Das Manik Chandra
Published: February 2024

Additive Manufacturing (AM) is an automated process of fabricating three-dimensional (3D) physical objects from a 3D-CAD data by adding layers of materials one upon another through a print head or nozzle without using any tooling components or machining environments. Due to freedom in design, any complex shape can be produced using this process. Fused Deposition Modeling (FDM) is one such AM technology that is commonly used for its simplicity, environment friendliness and low requirement for process monitoring. However, this technology is limited only to small-scale production due to high cost and high build time. The present work focuses on the development of a framework for parametric optimization of the FDM process using multi-objective optimization based on ratio analysis (MOORA). A CAD model of the cam follower mechanism has been prepared in the Solidworks platform and used in this experiment for optimization of build time and cost which have been considered as response variables of the experiment. The experiment has been conducted following the full factorial design of experiment (DoE) method.
Design and implementation of advanced sensor systems for smart robotic wheelchairs: A review
Authors: Sahoo Sushil Kumar , Choudhury Bibhuti Bhusan
Published: February 2024

Smart robotic wheelchairs have emerged as promising assistive devices to enhance mobility and independence for individuals with mobility impairments. The successful integration of advanced sensor systems plays a critical role in improving the functionality and safety of these wheelchairs. This paper presents a comprehensive review of the design and implementation of advanced sensor systems for smart robotic wheelchairs. Through an extensive literature review, the limitations of existing sensor technologies are identified, and the potential of advanced sensors is explored. Vision-based sensors, range and proximity sensors, force and pressure sensors, inertial sensors, and environmental sensors are discussed in detail. Furthermore, this review highlights the design considerations, hardware components, software development, and calibration procedures involved in implementing advanced sensor systems. Evaluation and performance analysis metrics are discussed to assess the effectiveness of the sensor systems. The research findings indicate that advanced sensor systems have the potential to significantly enhance the functionality and safety of smart robotic wheelchairs. However, challenges such as sensor integration, data fusion, and user feedback must be addressed. This review paper concludes by discussing the implications of advanced sensor systems in improving wheelchair functionality and user experience, and proposes future directions for research in this domain.
Digitalization of BSR in the recession
Authors: Chytilová Ekaterina , Talíř Milan
Published: February 2024

Digitalization of BSR (buyer supplier relationship) is generally one of the effective tools to strengthen the supply chain. This study aims to establish the correlations between the perceived importance of BSR, investment in BSR digitalization and ER (economic result) change. Data collecting was realized in the form of a questionnaire survey. This survey was carried out in Czech enterprises of different focuses and sizes. Hypotheses are tested using Pearson's Chi-squared test. The study confirmed that correlation between the perceived importance of BSR and investment to BSR digitalization is stronger for producers than for service providers. The investment in BSR digitalization brings about ER development in the short term only for services providers. Enterprises do not associate the development of ER and the importance of BSR. BSR is considered an important area as part of the SCM whole, but ER development is not associated with this area, nor does investment in this area have a clear economic effect in a recession. Thus, the logical triad of "importance of the process- investment in process development – process effect" is unprovable in the case of BSR digitalization in a recession.
Acute phase proteins in patients with recurrent pulmonary tuberculosis
Authors: Tudor Elena
Published: February 2024

Objective. Study of initial levels of acute phase proteins in patients with pulmonary tuberculosis with and without relapse as predictors of unfavorable disease progression. Materials and methods. 2 groups of patients were examined: the base group - 55 patients with pulmonary tuberculosis with relapse and the control group - 55 patients with pulmonary tuberculosis without relapse. Acute phase protein content was studied in patients before and after the intensive phase of treatment. The content of complement factors C3 and C4, haptoglobin, ceruloplasmin, properdin, C-reactive protein, IL-6, VSH, leukocyte content was studied. Results. The obtained results reveal that acute phase proteins can be considered basic predictors of ineffective antituberculosis treatment: the high indices of leukocyte, C-reactive protein, IL-6, ESR, and haptoglobin.
General non-specific adaptation reactions and levels of organism reactivity in patients with pulmonary tuberculosis and associated with the human immunodeficiency virus at the stages of medication
Authors: Antipa Vasile , Djugostran Valerii , Calenda Olga
Published: February 2024

The data of 165 patients were analyzed, of which 121 with pulmonary tuberculosis, new cases, who were treated according to the modified DOTS schemes with retrosternal instillation of the 10%-5ml isoniazid solution and 44 patients with pulmonary tuberculosis associated with human immunodeficiency virus, who received standard antituberculosis and antiretroviral treatment. The patients were assessed the reactions of general nonspecific adaptation, the reactivity levels of the organization and the sum of the score accumulated by the patient according to the method of L.H.Garcavi and coaut., 1979. It was found that in the quotas of patients from both groups up to treatment prevailed low levels of reactivity of the organism, which after the intensive phase DOTS (and corresponding – antiretroviral treatment) in patients only with pulmonary tuberculosis or more maintained at 50%, and in the group and with HIV Association low levels remained the same. Pathological adaptation reactions at that time in the first group persisted in every third patient, while in the other group they remained without changes. These data are useful in assessing the risk of activation of the process, the prognosis of further evolution of the disease and the correction of curative measures.
Detection of chronic bronchoobstructive diseases in the Republic of Moldova according the prism of the recommendations of international guidelines
Authors: Rusu Doina
Published: February 2024

Chronic obstructive pulmonary disease is an important public health problem. According to literature data, chronic lung diseases are underdiagnosed and there are many medical, psychological, social and economic barriers. In order to highlight the barriers and facilitating factors for the detection of chronic obstructive pulmonary disease at the level of primary care, a mixed qualitative-quantitative study was carried out, with a survey of 1190 participants and focus groups with doctors. Every fourth patient with respiratory symptoms does not report them to the family doctor and every second symptomatic patient does not perform a spirometry test. The most important barriers are low addressability after medical assistance, underestimation of respiratory symptoms, lack of doctors, professional overload and low access to spirometry at the primary care level.
Acute intestinal occlusion in pregnant women
Authors: Paladii Irina , Gheorghita Vadim , Kusturov Vladimir , Bitca Tamara , Kusturova Anna
Published: February 2024

Introduction. Intestinal occlusion in pregnant women is characterized by the difficulty of diagnosis and the negative prognosis for the pregnant woman (35-50%) and the fetus (60%). Purpose. Study of the etiology and particularities in the management of pregnant women with acute intestinal occlusion. Material and methods. We conducted a study of the treatment of 4 pregnant women with acute intestinal occlusion. Patients were examined clinically, laboratory, USG, abdominal X-ray, consulted by a gynecologist, surgeon, endoscopist, etc. Results. The treatment performed in 4 pregnant women with acute intestinal occlusion was complex, individual, successful. Surgical interventions: caesarean section, laparotomy was performed, new borns alive. In 2 patients the pregnancy was preserved. Conclusions. The causes of mechanical intestinal occlusion in pregnant women were volvulus of the sigmoid colon and intra-abdominal adhesion process after previous operations. The management peculiarities of pregnant women with intestinal occlusion were: diagnostic difficulties, late referral, unclear clinical picture.
Some results of perinatal complications in pregnant women with polycystic ovary syndrome
Authors: Grejdian-Voloceai Victoria
Published: February 2024

Purpose. Evaluation of the results of complications in the perinatal period in pregnant women with (PCOS) polycystic ovary syndrome. Material and methods. The research carried out for the accumulation, processing and analysis of data was a retrospective study that was carried out during the years 2020-2022 within IMSP SCM no. 1, the patients were divided into 2 groups: Group I – 60 patients with polycystic ovary syndrome and pregnancy achieved. Group II – 60 patients with normal pregnancy. According to its character, the study carried out is descriptive observational. The method of accumulating and extracting data from the medical documentation did not allow the determination of anamnestic-clinical peculiarities, clinical and paraclinical investigations (laboratory and instrumental), the evolution of the pregnancy and the birth of the pregnant women included in the study, including the assessment of the status of the newborn at birth. Results. From the results of the study, it can be confirmed that there were no statistically significant differences (>0.05) between the 2 groups included in the study. Live children were born - 50 (94.34±0.32) in group I compared to 58 (96.7±0.63) in group II. Neonatal death was registered only in group I – 3 (5.66±0.32) cases and neonatal death only in group II – 2 (3.3±0.63) cases. Conclusion. The results of the comparative study show that pregnancy in pregnant women with PCOS ends with macrosomicfetuses - 26.43%; with an Apgar score of 7-8 in – 38.3%; who did not require transfer to the neonatal intensive care unit – 64%. Strict antenatal monitoring of pregnancy remains the gold standard for favorable perinatal outcomes.
Ethical dilemmas in imaging diagnosis
Authors: Pisarenco Nadejda
Published: February 2024

The article highlights the important role of imaging diagnosis in diagnosing and evaluating diseases. It emphasizes that in the modern stage of imaging diagnosis, ethical principles such as fairness, patient welfare, confidentiality, and consent play a central role. Attention is drawn to the fact that the application of these principles is accompanied by ethical dilemmas. In this sense, an assessment is made of these dilemmas, as well as of the rules of appropriate interaction of medical workers with patients. It is concluded that, considering the rapid development of technologies and patients’ needs, there is a need for constant discussion and analysis of ethical issues in imaging diagnosis.
Development of a Transformative Leadership Model in the Emergence of Innovative Work Behaviors
Authors: Shahin Garavandnia Et al.
Published: February 2024

In today's highly competitive and advanced world where innovation plays an important role, understanding the nature of employee behaviors in the emergence of innovative behaviors is essential to strengthen innovation and organizational success. By understanding the position and role of leaders in persuading employees to show creative behaviors, the current research has sought to develop a transformative leadership model in the emergence of innovative work behaviors. The way we are doing this research is by using both surveys and applied methods. In the first part of the research, we looked at other studies to find data, and in the second part, we asked 30 Pars airline industry experts to fill out a questionnaire. We used Smart PLS software to study how things are connected. At the end of the discussion, the analysis model shows that being a strong leader who inspires and takes action in making changes and running a business leads to a positive workplace. This affects how willing people are to take risks and be motivated to work, as well as how the leaders and employees learn and come up with new ideas. "Among the workers. "
Existence and stability results for implicit impulsive convex combined Caputo fractional differential equations
Authors:   Laboratory of Mathematics, Djillali Liabes University of Sidi Bel-Abbes, Algeria, Wafaa Rahou , Abdelkrim Salim ,   Laboratory of Mathematics, Djillali Liabes University of Sidi Bel-Abbes, Algeria; Hassiba Benbouali University of Chlef, Algeria, Jamal Eddine Lazreg ,   Laboratory of Mathematics, Djillali Liabes University of Sidi Bel-Abbes, Algeria, Mouffak Benchohra ,   Laboratory of Mathematics, Djillali Liabes University of Sidi Bel-Abbes, Algeria
Published: February 2024

This paper deals with the existence and uniqueness results for a class of impulsive implicit fractional initial value problems of the convex combined Caputo fractional derivative. The arguments are based on Banach's contraction principle, Schauder's and Mönch's fixed point theorems. We will also establish the Ulam stability and give some examples to illustrate our results.
Stabilization of a microbeam system with a boundary or internal distributed delay
Authors:   Université Joseph Ki-Zerbo, Ouagodougou, Burkina Faso, Désiré Saba , Akram Ben Aissa ,   University of Monastir, Tunisia, Gilbert BAYILI ,   Université Joseph Ki-Zerbo, Ouagadougou, Burkina Faso
Published: February 2024

In this paper, we consider the microbeam system with distributed delay term on the boundary or into the domain. In both cases, and thanks to a clever combination of spectral decomposition theory of Sz-Nagy-Foias [18] and frequency domain approach and under some additional and suitable assumptions, we prove the exponential stability of the total energy of our considered system.
Evaluating the performance of machine learning algorithms in
predicting the best bank customers
Authors:   Islamic Azad University, Arak,  Iran, Mohammad Ehsanifar , Fatemeh Dekamini ,   Mahan Business School, Tehran, Iran, Amir Mehdiabadi ,   Mahan Business School, Tehran, Iran, Moein Khazaei ,   Tarbiat Modares University, Tehran, Iran, Cristi Spulbar ,   University of Craiova, Romania, Ramona Birau ,   Faculty of Economic Science, University Constantin Brancusi, Tg-Jiu, Romania, Robert Dorin Filip ,   University of Craiova, Romania
Published: February 2024

The best customer refers to the potential interaction of customers with the company during certain time periods. When companies understand the best customer and realize that the best customer can provide customized services for different customers, then they will achieve effective customer relationship management. This research is focused on the banking industry and systematically integrates data mining techniques and management topics to analyze the best customers. This study first uses the fuzzy hierarchical analysis method to weight the existing variables and then examines the DFMT model as an input to the k-means technique for clustering customers based on the desired criteria in the DFMT model. By using the proposed scoring model, it starts forming a customer value pyramid and categorizes customers into 4 value spectrums. Finally, in order to analyze the classes obtained from the customer value pyramid and implement the learning process from the available data, it uses the tenor classification techniques of decision tree, support vector machines and random forest along with the six characteristics and among They introduce the most appropriate model-characteristic based on available criteria.
On the Induction Motor Rotor Flux Estimation in the Electric Traction Systems with Rotor Flux-Oriented Control
Authors:   University of Craiova, Popescu Mihaela , Bitoleanu Alexandru ,   University of Craiova, Suru Constantin Vlad ,   University of Craiova, Mătușa Tudor ,   University of Craiova
Published: February 2024

Characterized by very good performance in both steady-state and dynamic regimes and also by a relatively simple control structure, the induction motor control with rotor flux orientation is frequently adopted in electric drive systems, especially in electric traction applications. This paper analyses the possibilities of rotor flux estimation in a real Romanian electric traction system of locomotives. Thus, to estimate the magnitude of rotor flux and the angu-lar position of the rotor flux vector, two possibilities are identified and discussed. First, the use of the sensed speed and stator currents is taken into consideration, and then the use of the measured supply voltages and the stator currents is the second alternative. Dedicated algorithms were designed for their related control. Both variants are analyzed through the results of the simulations obtained based on the specific models created in the Matlab/Simulink software. Four values of the imposed speed are taken into account in the performed analysis. It is highlighted that, in real conditions where the drive system is provided with speed sensor and there is no sine filter for the distorted motor supply voltage, the best option to estimate the rotor flux is to use the measured speed and the stator currents.
An Example of Performance Achievement Based on Errors Analysis for Low-Cost Circuits Design
Authors:   National University of Science and Technology Politehnica from Bucharest, Oancea Constantin Daniel , Bostan Daniel ,   RARTEL S.A., Bucharest, Romania, Petre Viorel Constantin ,   National University of Science and Technology Politehnica from Bucharest
Published: February 2024

To create high-performance equipment, low-performance components, such as those from the old generations, can also be used. For example, if a conditioning stage (amplification/attenuation or filtering) is made with high-end components having increased performance, the costs are appropriate – using “classical” functional ones, the price of the equipment will become competitive. Low-cost devices may have features that do not make them attractive for inclusion in high-performance equipment but certain errors’ analysis may lead to practical and useful results. A converter circuit from PWM pulses to DC voltage was used. Experimental determinations were made using several types of operational amplifiers and errors analysis and correction was carrying out.
Equipment for the Detection of People Falling
Authors:   National University of Science and Technology Politehnica from Bucharest, Oancea Constantin Daniel
Published: February 2024

There are people whose state of health requires permanent supervision. There are a number of medical or aging-related conditions that can have quite an impact on the daily life of these people, therefore, in order to provide them with proper assistance and care, various health monitoring devices have been developed. This article proposes the use of advanced technologies with the help of which we can observe and record the changes in the position of a person with such problems. The equipment has a sensor that can determine the position of the body by measuring the height from the ground. The device can be integrated into a belt or bracelet to record data in real time. This data is analyzed and interpreted by means of a program. The program can detect changes in posture, providing notifications and alerts when the person has suffered a fall. Greatly simplifying surveillance, the device also provides an objective assessment of a person's balance ability. Since each person has a specific posture and movement, the developed device must be tested and adapted to adjust the coefficients in the program, to avoid the triggering of false events.
Experimental Study of the Pressure Exerted in the Body of a High-Voltage Fuse and Metal Enclosed Switchgear
Authors:   National Institute for Research, Development and Testing in Electrical Engineering (ICMET) Craiova, Romania, Sălceanu Cristian-Eugeniu , Dobrea Cătălin ,   National Institute for Research, Development and Testing in Electrical Engineering (ICMET) Craiova, Romania, Ocoleanu Daniel Constantin ,   National Institute for Research, Development and Testing in Electrical Engineering (ICMET) Craiova, Romania, Iovan Daniela ,   National Institute for Research, Development and Testing in Electrical Engineering (ICMET) Craiova, Romania
Published: February 2024

This article presents the importance of analyzing the breakdown behaviour of high voltage fuses and highlights the pressure values at the fuse ends. The theoretical basis, test scheme structure, design and sizing elements of fuse components, and numerical simulations performed in Matlab/Simulink are presented. The extinguishing environment is not modelled as it is considered to be a vacuum Starting with the oldest overcurrent protection device and continuing with the importance of high voltage fuses for operational safety, the study presents the behaviour of high voltage fuses during short-circuit current interruption. The key element is the value of the pressure on the contacts of fuses, which is often ignored in favour of the pressure of the middle element. When fuses change from solid to liquid state the inner parts are hotter than the outer parts and melt first, and the melting zone extends to the periphery. The study found that the pressure is much higher and is an important value for designers. Experiments showed that the maximum pressure is reached during the arcing period, a significant finding for the design process of the contacts of a high-voltage fuse. The research was then extrapolated to check the pressure in metal enclosed switchgear containing fuse combinations.
Modelling, Simulation and Implementation on dSpace 1103 of the Direct Power Control in a Three-Phase Shunt Active Power Filter System
Authors:   University of Craiova, Constantinescu Mihaiţă-Daniel , Popescu Mihaela ,   University of Craiova, Subţirelu Gheorghe-Eugen ,   University of Craiova, Toma Ionuţ-Cosmin ,   University of Craiova
Published: February 2024

This article describes a control method called "direct power control" designed specifically for parallel active power filters. The purpose of this method is to attenuate harmonics in the supply current and offset reactive power problems. The main goal is to bring the active power and reactive power back to the reference values through hysteresis control. The output of the hysteresis controller is combined with the switching table to regulate active and reactive power in real time by determining the optimal switching configuration of the inverter. This study proposes a novel switching table design based on analyzing the impact of the inverter switching vector on the instantaneous reactive and active power derivatives. The goal is to reduce the number of commutations by eliminating zero vectors while maintaining the required DC bus voltage using anti-windup techniques based on PI controllers.
The Design of a Location Monitoring System for a Fleet of Electric Scooters
Authors:   University of Craiova, Ravigan Florin , Lincă Mihăiță ,   University of Craiova, Alboteanu Ionel Laurentiu ,   University of Craiova
Published: February 2024

The development of geolocation systems( geostationary satellite networks), as well as devices capable of receiving signals and processing the data coming from them, makes possible the implementation of location monitoring systems for various purposes. Whether it's about security or optimizing travel times or routes, these systems are based on information in the form of global coordinates (latitude and longitude) from satellite systems or cell towers. The design of such a system is presented in this paper, being a good guide in the design and implementation of such a system, regardless of the application. Both, the hardware part (the designed equipment) and the software part (the backend component running on a virtual private server, as well as a mobile application) are presented in this paper. In the development of the system, was used only location provided by information from satellites, without using GSM cell signals. The entire system has been successfully tested in different GSM signal conditions as well as various locations to see the influence of environmental parameters on performance. The system described in the paper can be the starting point for the development of other systems for a variety of applications that require the management of the location of some devices.
LA SATIRE ET L’HUMOUR : PROCÉDÉS SCRIPTURAUX OU VERTUS CORRECTIVES CHEZ VOLTAIRE
Authors:   Universitatea Mohammed V, Rabat, Maroc, ATAFI Hind
Published: February 2024

To expose injustices or vices, one can either directly provoke horror and indignation by stating the facts, or use satire, which consists of making people laugh so that the reader will condemn the facts. Voltaire favours the second solution. Humour, irony
MÉCANISMES DE L’HUMOUR DANS LES BLAGUES ROUMAINES d’avant 1989
Authors:   Universitatea din Craiova, NEDELCU Cristi , IONESCU Alice ,   Universitatea din Craiova
Published: February 2024

Under the communist dictatorship of Nicolae Ceaușescu, humor served as a defense mechanism that allowed Romanians to cope with the regime's restrictions on freedom and the grim daily reality that blatantly contradicted official propaganda. The political j
DISCOURS COMIQUE CAMEROUNAIS ENTRE COLORATION CULTURELLE COMIQUE ET SARCASTIQUE
Authors:   Universitatea Maroua, Cameroun, YONTA Jacqueline Eve
Published: February 2024

The aim of this paper is to analyze the discursive peculiarities of Cameroonian comic discourse and its meaning, based on lexico-semantic, morphological and semiolinguistic approaches. Cameroonian humour is characterised by its cultural colouring and the
« TOUJOURS » DANS LES ROMANS D'AUTOFICTION D'AMELIE NOTHOMB
Authors:   Universitatea din Craiova, MILITARU Paulica-Dana
Published: February 2024

The paper discusses the polysemy of the adverb toujours in the autofiction novels of the Belgian writer Amélie Nothomb. Originally a linguistic unit with a temporal value, toujours has recently acquired pragmatic meanings that place it among the discourse
ANALISIS PENDAPATAN USAHATANI PEPAYA CALIFORNIA (Carica papaya L.) DI KELURAHAN PETUK KATIMPUN KECAMATAN JEKAN RAYA KOTA PALANGKA RAYA (Studi Kasus : Usahatani Pepaya California Bapak Joko Winarso)
Authors: Raudhatus Sholehah  , Ahmad Zaki Yamani  , Masliani
Published: February 2024

Penelitian ini bertujuan untuk: 1) Mengetahui gambaran umum usahatani Pepaya California Bapak Joko Winarso; 2) Menganalisis besarnya biaya produksi dan penerimaan usahatani Pepaya California Bapak Joko Winarso; 3) Menganalisis besarnya pendapatan dan Revenue Cost Ratio pada usahatani Pepaya California Bapak Joko Winarso. Penelitian ini dilaksanakan di Kelurahan Petuk Katimpun, Kecamatan Jekan Raya, Kota Palangka Raya selama 3 bulan. Berdasarkan hasil penelitian maka dapat disimpulkan bahwa usahatani Pepaya California milik Bapak Joko Winarso dengan luas lahan 0,75 ha. Pada bulan November 2022 mengeluarkan biaya produksi sebesar Rp8.367.460 dan memperoleh penerimaan sebesar Rp16.430.000. Pendapatan yang diterima oleh Bapak Joko Winarso sebesar Rp8.062.540 dengan nilai Revenue Cost Ratio (R/C Ratio) sebesar 1,96 dengan kriteria R/C > 1 layak atau menguntungkan, maka usahatani Pepaya California milik Bapak Joko Winarso menguntungkan dan layak untuk diusahakan.
Australia’s Pacific Seasonal Worker Pilot Scheme: Managing vulnerabilities to exploitation
Authors: Ball Rochelle , Beacroft Laura , Lindley Jade
Published: February 2024

As part of the Australian Government’s response to trafficking in persons, the Australian Institute of Criminology (AIC) has undertaken preliminary research to assess the risks and protective factors for labour trafficking and to identify matters for priority research. In this context, a literature review is presented of Australia’s Pacific Seasonal Worker Pilot Scheme (PSWPS), which is designed to enable Pacific Islanders to temporarily work in the horticultural sector and following a recent announcement, to also allow East Timorese access to tourism work in Australia. The paper is informed by literature relating to the longer running New Zealand Recognised Seasonal Employment (RSE) Program, supplemented with targeted stakeholder consultations conducted between 2008 and 2010 in the Pacific. At this early stage, the PSWPS is regarded as a positive development in the legal sourcing and use of overseas temporary labour but its planned growth will nonetheless be challenging. The RSE may provide valuable lessons for the recently announced expansion of the PSWPS and other temporary workers schemes for Pacific Islanders.
Considering local context when evaluating a closed circuit television system in public spaces
Authors: Anderson Jessica , McAtamney Amanda
Published: February 2024

Closed circuit television‘s (CCTV) popularity as a solution to local crime problems continues to gain traction. Its broad community support and visibility as a tangible response to crime problems suggests that the demand for CCTV is unlikely to abate. However, many agencies have difficulty locating information on the practical considerations for implementing a CCTV system and only become aware of the real cost of CCTV after installing the system. Therefore, measures need to be taken to ensure knowledge of good practice in CCTV implementation is shared. In addition, agencies need to be aware of the different factors that can influence CCTV delivery. Such information could add further value by being considered when developing evaluations of CCTV. In this paper, a description is provided of the lessons learned by local agencies when implementing a CCTV system that was administered through a grants program. Such experiences, if adequately disseminated, can assist agencies to implement CCTV systems and assist in the development of evaluation strategies.
Misperceptions about child sex offenders
Authors: Richards Kelly
Published: February 2024

Sexual offending against children is a highly emotive issue. It is nonetheless important that public policy initiatives to prevent and/or respond to child sexual abuse are based on the available evidence about child sex offenders. This paper addresses five common misperceptions about the perpetrators of sexual offences against children. Specifically, the issues addressed include whether all child sex offenders are ‘paedophiles’, who sexually abuse children, whether most child sex offenders were victims of sexual abuse themselves, rates of recidivism among child sex offenders and the number of children sex offenders typically abuse before they are detected by police. The evidence outlined in this paper highlights that there are few black and white answers to these questions. Perpetrators of sexual crimes against children are not, contrary to widespread opinion, a homogenous group. Rather, there are a number of varied offending profiles that characterise child sex offenders. Gaining an understanding of the nuances of this offender population is critical if children are to be protected from sexual abuse.