bluuebunny/crossref_metadata_2025 huggingface dataset:
Validación psicométrica de la escala Conocimiento Tecnológico Pedagógico del Contenido TPACK-ES y evaluación de la autoeficacia percibida por el futuro profesorado
Authors: Ortega-Sánchez Delfín
Published: July 2023

A pesar de las utilidades del análisis de la percepción de la autoeficacia en el éxito y rendimiento del profesorado y alumnado en el proceso de enseñanza-aprendizaje propuesto por el modelo TPACK (Conocimiento Tecnológico Pedagógico del Contenido), resultan escasas las investigaciones focalizadas en las creencias y percepciones del futuro profesorado. La presente investigación tiene un doble objetivo: por una parte, busca validar las propiedades psicométricas de la escala TPACK-ES en el contexto español; y por otra, analizar las percepciones de la autoeficacia en el modelo del profesorado de Educación Primaria y Educación Secundaria en formación inicial. Accedieron a participar en este estudio 303 estudiantes universitarios con una media de edad de 23.12 ± 3.21 años, matriculados en una universidad del norte de España. Los resultados obtenidos confirman la estructura heptafactorial del modelo, su consistencia interna, estabilidad estructural y adaptación a índices de ajuste óptimos. Igualmente, se identifican diferencias estadísticamente significativas en las dimensiones TK y TPK, en variables estructurantes del modelo y en las dimensiones PK (conocimiento pedagógico), PCK (conocimiento pedagógico del contenido), TPK (conocimiento tecnológico pedagógico) y TPACK, en función del nivel formativo-docente y del género del futuro profesorado. Estos resultados informan de la necesidad de continuar atendiendo al análisis de factores contextuales al modelo TPACK para su adecuación y verdadera efectividad en la formación inicial del profesorado.
An exploration of institutional and personal barriers to online academic engagement at a Brazilian university
Authors: Bittencourt Spricigo Cinthia , Camilotti Bárbara Maria , Graham Charles R. , Baptista Ruth
Published: July 2023

The recent global pandemic has raised institutional awareness around the world concerning the importance of having high quality online learning options for students. Learner engagement is often correlated with quality outcomes such as student academic success and student satisfaction. Learner engagement is commonly thought of as having three important dimensions: affective engagement, behavioral engagement, and cognitive engagement (ACE framework). Engagement is also enabled or limited by facilitators/barriers. Three important categories of facilitators/barriers are learner characteristics, personal environment, and course environment. Elements in each of these three areas enable or are barriers to students fully engaging in a course. This research explored what the barriers are to students fully engaging in their online courses at a Brazilian university to determine which areas will be most productive for the university program administrators and designers to focus on increase student academic engagement. A survey was applied to students from the Brazilian university under graduation online programs. It included items related to engagement facilitators barriers in the three areas described in the ACE framework and received 429 valid responses. The affective and behavioral dimensions were perceived by students as the lower engagement indicators in the ACE framework. Among facilitators or barriers for engagement, the ones under the course environment category were predominantly perceived as barriers, while learner characteristics and student environment were perceived as facilitators. However, all three categories were more barrier than facilitator for over 40% of the students. Although course environment is the barrier most under control of the institutions, understanding students´ personal environment and characteristics of learning can help them to provide support and facilitate full engagement in online courses.
ANALYSIS OF THE IMPACT OF MOISTURE AND BIODETERIORATION ON THE ASSESSMENT OF THE TECHNICAL CONDITION OF HISTORICAL BUILDINGS
Authors: Ksit Barbara
Published: July 2023

This paper deals with issues related to the diagnosis of dampness and mycological tests in historic buildings. The selection of appropriate diagnostic procedures in the case of historic buildings undergoing modernisation, revitalisation or renovation is an important element of properly conducted works aimed at the preservation of cultural heritage. The article presents the issues of biodeterioration, and the scope of procedures for carrying out expert assessments of historic buildings, with emphasis on the issue of mycological testing. In conclusion, the article states that due to dynamic degradation processes caused by biological corrosion, mycological examinations of buildings containing wooden structures should be obligatory in the building law. It was pointed out that economics repeatedly determines the depth of research and thus the reliability of the analysis results obtained.
Gene Expression Profiling associated with Hepatoxicity in Pregnant Rats treated with Ubi Gadong(Dioscorea hispida) Extract
Authors:   Diabetes and Endocrine Unit, Cardiovascular, Diabetes and Nutrition Research Centre (CDNRC), Lokman Ezarul Faradianna , Muhammad Hussin , Awang Norizah ,   Toxicology and Pharmacology Unit, Herbal Medicine Research Centre (HMRC), Omar Maizatul Hasyima ,   Phytochemistry Unit, Herbal Medicine Research Centre (HMRC), Institute for Medical Research, Jalan Pahang, 50588, Kuala Lumpur, Malaysia, Mansor Fazliana , Saparuddin Fatin ,   Diabetes and Endocrine Unit, Cardiovascular, Diabetes and Nutrition Research Centre (CDNRC)
Published: July 2023

Dioscorea hispida (D.hispida) is the most well-known starchy tuber in Malaysia and called ‘ubi gadong’. Despite concerns over toxicity effects, the tuber is known to possess therapeutic values due to the presence of bioactive compounds such as saponins. This study was performed to identify the changes in gene expression profiles associated with hepatoxicity in pregnant rat treated with D.hispida using RT² Profiler PCR Array. The identification of steroidal saponins from D.hispida was carried out by UHPLC/MS method. Treatment of D.hispida caused mortality when dosage above 2000 mg/kg b.w. was given to pregnant rats. The PCR array showed that several genes were significantly up and down-regulated upon treatment with D.hispida. Treatment of D.hispida at 2000 mg/kg b.w leads to significant upregulation of several genes such as Btg2, Gsr, L2hgdn, S100a8, Slc17a3, Bhmt, Cd68, Cyp1a2 whereas several genes were downregulated such as Abcb1a, Aldoa, Cdc14b, Icam1, Krt18, Hpn and Maob. The consumption of D.hispida extract when taken at lower dosage of 2000 mg/kg may not be harmful to rats. D.hispida extract given at the highest dosage to pregnant rats caused alterations of several genes categorized in different hepatotoxic group functions such as necrosis, cholestasis and phospholipodisis.
Telescopic Overdenture: A Case Report
Authors:   Professor, Department of Prosthodontics, M R Ambedkar Dental College and Hospital, Bangalore, Karnataka, India, Shruthi C. S. , Poojya R. ,   Reader, Department of Prosthodontics, M R Ambedkar Dental College and Hospital, Bangalore, Karnataka, India, Ram Swati ,   Post Graduate Student, Department of Prosthodontics, M R Ambedkar Dental College and Hospital, Bangalore, Karnataka, India, . Anupama ,   Post Graduate Student, Department of Prosthodontics, M R Ambedkar Dental College and Hospital, Bangalore, Karnataka, India
Published: July 2023

Patient: This report describes the case of a 68 year old female patient who presented with the chief complaint of difficulty in chewing and poor aesthetics due to missing teeth. The patient was interested in saving the remaining natural teeth and desired minimal tissue coverage from the prosthesis. After consideration of all the factors involved, it was deemed advisable to resort to a palate free maxillary telescopic complete denture and a mandibular removable partial denture. Discussion: Considering the age of the patient and the cost involved, implant supported prosthesis was ruled out as a treatment option for the patient. A telescopic denture was chosen as a favourable treatment option since it overcomes many of the problems posed by conventional complete dentures like progressive bone loss, lower stability and retention, loss of periodontal proprioception and low masticatory efficiency. It also provides minimal tissue coverage and better distribution of forces. Evaluation of occlusion, esthetics, phonetics and comfort after 24 hours, 1 week and 1 month of treatment showed that the patient was happy with the prosthesis and was able to speak and chew well. Conclusion: Telescopic overdentures have better retention and stability as compared to conventional complete dentures. They improve the chewing efficiency, patient comfort and also decrease the alveolar bone resorption. As such they are an excellent alternative to conventional complete denture treatment.
Study of Reversible CD4/CD8+ve T Cell Counts in Patients with HIV Negative Pulmonary Tuberculosis after Effective Treatment with Antitubercular Therapy (ATT)
Authors:   Department of Internal Medicine, Sher-i-Kashmir Institute of Medical Sciences (SKIMS), Srinagar 190011, India, Dhobi Ghulam N. , Siraj Farhana , Mir Mohmad H. ,   Department of Internal Medicine, Sher-i-Kashmir Institute of Medical Sciences (SKIMS), Srinagar 190011, India;, Pandith Arshad A. , Qasim Iqbal ,   Advanced Centre for Human Genetics, SKIMS, Srinagar 190011, India;, Shah Zafar A. ,   Immunology and Molecular Medicine, SKIMS, Srinagar 190011, India
Published: July 2023

Background/Purpose: Tuberculosis (T.B) an infectious disease caused by Mycobacterium tuberculosis is still one of the biggest killers among the infectious diseases. Immunological deficiencies of various magnitudes have been reported in TB which include CD4 + T and CD8 + T cells. The aim of the study was investigating the at the occurrence of CD4+ T cell lymphopenia in patients with active pulmonary tuberculosis and the response of this abnormality to ATT in HIV negative patients. Methods: The study subjects included three groups in which 30 patients were with sputum positive pulmonary tuberculosis without any evidence of HIV infection and second group of10 healthy controls. Third group included10 patients with pulmonary tuberculosis co-infected HIV sero-positivity. Zeil Nelson (ZN) method was used to diagnose pulmonary tuberculosis, ELISA method was adopted to confirm the HIV status and CD4 and CD8 count was done by flow cytometry. Results: The CD­4 + T cell lymphopenia was observed significantly associated (p=0.000) in Non-HIV pulmonary tuberculosis cases as compared to controls (370.87 ± 209.00 cells/μl v/s 673.60 ± 120.30 cells/μl).CD4 + T cell lymphopenia was significantin HIV positive pulmonary TB patients compared to healthy controls (p=0.000). CD4 + T cell lymphopenia was more severe in HIV co-infected pulmonary tuberculosis patients compared to Non-HIV pulmonary TB cases (p=0.029). Conclusion: We conclude that the pulmonary tuberculosis is an important cause of non HIV CD4, CD8 lymphopenia, with reversal of CD4/CD8 ratio, and this is reversible with effective treatment with antitubercular therapy (ATT).
Assessment of Dimensional Disparity in Posterior Arch Width Between Opposing Maxillae and Mandibles in Completely Edentulous Patients with Increased Resorption and Edentulous age - An in vivo Study
Authors:   Department of Prosthodontics, M R Ambedkar Dental College and Hospital, Bangalore, India, Shruthi C. S. , Kumar R. Vinod ,   Oxford Dental College and hospital, Bangalore, India;, Dharmashree R. D. ,   Subbaiah Dental College and Hospital, Shimoga, India, Poojya R. ,   Department of Prosthodontics, M R Ambedkar Dental College and Hospital, Bangalore, India;
Published: July 2023

Aim: To assess the dimensional disparity in arch width between opposing maxillae and mandibles with edentulous age and increased resorption in edentulous subjects wearing complete denture. Materials and Method: One hundred edentulous subjects wearing complete denture were selected for the study. Maxillary and mandibular casts and a panoramic radiograph were made for each subject. The original height of the mandible before loss of teeth and resorption was predicted by multiplying the distance between the inferior border of the mandible to the lower edge of the mental foramen by a factor of 2.9. The reduction in height of the edentulous mandible was expressed as percentage of the original height of the mandible. The maxillary arch widths immediately anterior to the tuberosities and mandibular arch widths immediately anterior to the retromolar pads were measured. The difference between these two measurements was calculated to determine the discrepancy in posterior arch width. Results: There was no statistically significant difference in the mean values of posterior arch width discrepancy for different groups of edentulous age as well as percentage resorption. The differences in the mean values for amount of resorption with edentulous age were statistically significant. Conclusion: The discrepancy in posterior arch width between opposing maxillae and mandible does not increase progressively with edentulous age and increased reduction in mandibular height. The arch width of the mandible exceeds the arch width of the maxillae in the molar region by an average of 6 to 8 mm after sufficient resorption establishes a definitive alveolar crest. This remains constant regardless of the amount of resorption or edentulous age. The mandibular ridge reduction is found to increase with edentulous age.
Places of power
Authors: Ainiala Terhi , Olsson Pia
Published: July 2023

By analysing Finnish data drawn from 106 written responses to a questionnaire, we have studied the ways people name their places of power and the ways affective meanings are present in their descriptions. Places of power renew, calm, invigorate and help in distress. They allow the respondents to be alone and listen to their own thoughts, or they make them feel at one with nature. Four main strategies are used to identify these places of power: official place names, relational place descriptions, unofficial place names and classifying expressions. In the process of placemaking, three kinds of agency stand out: the agency of the materiality of the place, that of emotions and affective practices, and that of the person experiencing the place. Identifying the place by naming it is part of this process.
Referring to women using feminine and neuter gender
Authors: Busley Simone , Nübling Damaris
Published: July 2023

In German, gender is a strongly grammaticalized category and has the function of indicating grammatical agreement between syntactic units. Usually, each noun is assigned one of three grammatical genders. In standard German, nouns denoting women are typically feminine. However, Luxembourgish and some German dialects show a peculiarity: here, the gender of female first names and other parts of speech (e.g. pronouns) referring to women can be both feminine and neuter, depending on the nature of the interpersonal relationship between the speaker and the female referred to. In these varieties, gender assignment is governed by sociopragmatic factors. Sociopragmatic gender assignment is a result of de-grammaticalization, which is reflected in both syntagmatic and paradigmatic gender variability. The study shows that there is considerable diatopic variation in the use and function of gender in references to women. In some dialects, the neuter has become the default gender of female first names; this is a case of re-grammaticalization.
The social and political life of names and naming
Authors: Rose-Redwood Reuben
Published: July 2023

This concluding commentary critically and constructively engages with the articles in this first multidisciplinary issue of the Nordic Journal of Socio-Onomastics. It does so in the spirit of affirmative critique, with the aim of advancing the ongoing dialogue on the social and political life of names and naming. The commentary concludes by arguing that the multidisciplinary field of socio-onomastics is best viewed as a contact zone, or space of convergence, for scholarship that examines the diverse ways in which names and naming shape, and are shaped by, worlds-in-the-making.
Kommunens namn i kommunsloganer
Authors: Ainiala Terhi , Sjöblom Paula , Hakala Ulla
Published: July 2023

Most municipalities in Finland have a slogan. At best, the slogan stems from the municipality’s strategy and thereby conveys the mission of the municipality and strengthens both its image and its memorability. In our interdisciplinary project, we are analysing municipal slogans from both a linguistic and a marketing point of view, exploring their ability to promote the municipality’s reputation and visibility. Our analysis here is limited to slogans that include the name of the municipality; in these cases, the different linguistic ways in which the name of the municipality can function as a motivation are explored. The focus is on the syntactic position of the name and its discursive function, as well as on alliteration with the name in the slogans. Based on this linguistic analysis, the motivation for such slogans in municipalities’ marketing discourse is considered.
Factor structure, criterion-related validity, and longitudinal measurement invariance of the Regulation of Eating Behavior Scale (REBS): A bifactor S-1 exploratory structural equation modeling approach
Authors: Stenling Andreas , Martin Hannah , Hargreaves Elaine
Published: July 2023

The Regulation of Eating Behavior Scale (REBS) is one of the most popular measures to assess why people regulate their eating behaviors. However, few studies have examined its psychometric properties and problems with discriminant validity have been identified in previous research. The present study (re)examined the factor structure and criterion-related validity of the REBS using confirmatory factor analysis (CFA), exploratory structural equation modeling (ESEM), and bifactor (S-1) modeling in a sample of middle-aged women (N = 1447). We also examined longitudinal measurement invariance in a subsample of participants (n = 803) who responded to the survey 5 years later. The bifactor S-1 ESEM provided an excellent fit to the data and the factor loading pattern showed a well-defined global self-determination factor anchored in intrinsic motivation with decreasing contribution from the other items on the continuum. Relations between the global and specific motivation factors, food habits, binge eating, and BMI provided evidence of criterion-related validity. Longitudinal measurement invariance across time was also verified. Our results support the idea that the global factor represent a general quantity of self-determination rather than relative self-determination.
Childhood Leukemia: A Review
Authors: Awasthi D.K.
Published: July 2023

Leukemia is cancer of the blood. It’s the most common form of cancer in childhood. The cancer cells grow in bone marrow and go into the blood. The bone marrow is the soft, spongy centre of some bones. It makes blood cells. When a child has leukemia, the bone marrow makes abnormal blood cells that don’t mature. The abnormal cells are usually white blood cells (leukocytes). The bone marrow also makes fewer healthy cells. The abnormal cells reproduce very quickly. Children with leukaemia can need treatment for up to 3 years.
Spinal Infarction in a Young Adult without Predisposing Risk Factors: A Case Report
Authors: Grewal Iqbal , Elsemary Omar , Nasim Saifullah , Mukhtar Nadeem
Published: July 2023

Spinal cord infarctions are a form of stroke characterized by ischemia originating within the spinal cord or its supplying arteries. Presentation of spinal cord infarctions vary greatly due to its diverse pathologies, but can include bladder dysfunction, paraplegia, quadriplegia, etc. The average age of people with this disease tends to be older adults, with very few reported cases in the younger demographic. Here, we report a case of spinal infarction in a young 25-year-old adult male with no predisposing risk factors.
Partikel sebagai Pemarkah Wacana Fatis dalam Podcast @Kasisolusi
Authors: JR Vicno Triwira Dhika
Published: July 2023

Pemarkah wacana merupakan penanda wacana. Penanda wacana yang dimaksud dapat berupa kata dan frasa. Misalnya dalam penggunaan partikel nah, oh, dan ya, partikel ini tidak hanya sekedar mengucapkan kata-kata, tetapi juga mengandung makna yang tersirat dalam tuturan partikel tersebut. Penelitian ini bertujuan untuk meneliti pemarkah wacana berupa partikel yang terdapat dalam Podcast @Kasisolusi. Penelitian ini hanya meneliti terkait partikel apa saja yang terdapat di dalam Podcast @Kasisolusi yang tergolong ke dalam pemarkah wacana. Penelitian ini menggunakan pendekatan metode penelitian deskriptif kualitatif. Teknik pengumpulan data yang digunakan dalam penelitian ini berupa teknik simak bebas libat cakap, dan teknik lanjutan berupa teknik dokumentasi. Teknik lanjutan dokumentasi digunakan untuk melihat penggunaan bahasa yang berasal dari dokumen video yang ada di channel Youtube. Teknik analisis data yang digunakan dalam penelitian ini berupa teknik agih. Berdasarkan penelitian yang telah dilakukan ditemukan 38 data pemarkah wacana yang berbentuk partikel pada tuturan pembawa acara yang bernama Deryansha dan narasumber yang bernama Ustad Harits Abu Naufal, dalam video yang berjudul Benarkah Muslim yang Sibuk Berbisnis Disebut Cinta Dunia pada Podcast @Kasisolusi. Penelitian ini juga mengungkapkan bahwa kategori fatis yang dominan digunakan dalam video Benarkah Muslim yang Sibuk Berbisnis Disebut Cinta Dunia pada Podcast @Kasisolusi ialah kategori fatis berbentuk partikel.
The Influence Of The Work Environment On Motivation And Their Impact On Employee Performance At Distribution Center The Body Shop Indonesia
Authors: Abdullah Muhammad
Published: July 2023

All companies in the world are currently in a condition affected by the effects of the Covid-19 pandemic that emerged at the end of 2019. The purpose of this study was to determine how the direct influence of the work environment on employee performance, the direct influence of motivation on employee performance, and to determine the effect of the work environment through motivation and its impact on employee performance at The Body Shop Indonesia Distribution Center. The population and sample of the object of this research are all employees who work in the Distribution Center of The Body Shop Indonesia, totaling 39 people. The results of the study indicate that there is a direct and significant influence of the work environment on employee performance, then there is also a direct and significant influence of motivation on employee performance and proves that there is an influence of the work environment through motivation on employee performance at the Distribution Center of The Body Shop Indonesia.
The Effect Of Mobile Banking Product Quality On Customer Satisfaction Of Indonesian Sharia Bank Jakarta Wolter Monginsidi Branch
Authors: Wiharso Gani , Hendri Prasetyo Johan , Prakoso Bobby Suryo , Fabrianto Luky
Published: July 2023

Bank is a financial institution that collects funds from the public in the form of deposits, both demand deposits, savings and time deposits. This study aims to determine the effect of mobile banking product quality on customer satisfaction of Bank Syariah Indonesia Jakarta branch Wolter Monginsidi. The method use is a survey methode using descriptive and verification analysis technique. The sampling technique of this study used a purposive sampling technique of 75 respondents.  The data collection technique use quisionnaire with 20 question items assessed on a Likert scale 1-5 and tested for validity and reliability. Hyphotesis testing using statistical analysis included classical assumption test (Normality test and Heteroscedasticity test), Autocorrelation test (Dubin Watson), Simple Linier Regression Analysis (R square, t-test, and F test). Based on partial test, it can be stated that Product Quality has a positive effect on visitors to the Jakarta branch of Bank Syariah Indonesia Wolter Monginsidi, so the hypothesis can be accepted.
Caracterización psicosocial de riesgo en contextos de pobreza
Authors: Rodriguez Canales Fredy Fernando , Uriol Alva Antonieta del Pilar
Published: July 2023

A partir de las vivencias y experiencias exploratorias en el quehacer profesional de los autores y conjugadas con el análisis de revisión bibliográfica, desde una mirada psicosocial se caracteriza el impacto del fenómeno pobreza en las personas y las colectividades en el marco de cuatro dimensiones: cognoscitivo, afectivo – emotivo, comportamental y espiritual. En la Introducción, se define conceptualmente el fenómeno psicosocial como formas de comportamientos compartidos que en su origen en un sentido determinante responden a procesos de aprendizaje modelados por condicionamientos socios culturales. Se pretende demostrar las implicaciones las implicaciones de la situación social de pobreza en cuanto a formas de pensamiento, reacciones afectivo - emocionales, conductuales y sentido de trascendencia en quienes subsisten bajo esta condición bajo ocho características considerados de riesgo: desesperanza y fatalismo con repertorio lingüístico restringido,  subvaloración personal, estados de ánimo tristes y nostálgicos, tendencia al maltrato con escasa expresión paterna de afecto, pobre autocontrol y autorregulación, desconfianza en la interacción social, proyección temporal reducida al presente sin metas en proyecto de vida, y primacía del locus de control externo, concluyendo que es un aspecto que deben necesariamente tomarse en cuenta e incorporase en las estrategias, políticas y programas de lucha contra la pobreza, para finalmente señalar las Referencias documentales o fuentes consultadas.
Factors, stages and varieties of migration and migration processes: theoretization in ukrainian science.
Authors:   Akademia Nauk Stosowanych Gospodarki Krajowej, Białobłocki Krzysztof
Published: July 2023

The study is dedicated to analyzing, structuring and systematizing different The article structures the theorizations available in Ukrainian Political Science on the factors, stages and varieties of migration and migration processes, in particular at the back- ground of a number of political and socio-economic events of the past decades of the early 21st century. This period was chosen taking into account the fact that at this time different and divergent migration processes were gradually expressed both within Ukraine and from Ukraine to other countries in Europe and the world. It was shown that the migration process necessarily includes four stages – initial or preparatory, basic, residence stage and return stage. The author revealed that these stages are inherent in different types of migration, although due to quite different factors, including economic, social, political/political-legal, environmental, cultural/ethno cultural, demographic and so on. In general, it was found that the topics of factors, stages and varieties of migration processes are well developed and structured in Ukrainian science.
Analysis of The Basis of The Creative Economy in The Development Strategy of Economic Innovation
Authors: Rohmat Hidayat Agus , Alifah Nur
Published: July 2023

Change occurs quickly and is full of vulnerabilities, such as the current COVID-19 situation, which is very difficult for supply chain managers, even though it currently has a very high level of normalcy. Consumer trends change very quickly and are difficult to predict. With the aim of a creative economy-based innovation development strategy, this study aims to identify the variables that influence the implementation and competitiveness of the innovative industries to be developed. It is important to note that the advertising process is not only about providing information, availability of goods, money and progress, but also has the advantage of providing information, quality map knowledge and applying valuable walking skills. The Strengths, Opportunities, Aspirations, and Outcomes (SOAR) survey and site survey were used to determine the optional process. A strategy that takes into account all the attractive quality points acquired. Therefore, in preparing object forms (translation exercises and communication activities), the potentials and challenges must be carefully weighed to achieve inclusive benefits in each implementation. The results of the SOAR study produced five alternative approaches. The most significant added value is the examination of the importance of possible resource accessibility with a value of 15,862, followed by second to fifth, access to rapid market changes (14,840), the establishment of associations (14,646), standardization and economy. Objects (14,123) and the development of productivity standards for competitiveness (12,288). An imaginative approach to business development should consider resource potential and quick response to advertising requests, along with three other components.
Numerical Basis and Validation of CAD-Centric CFD: Honeycomb Heatsink Study
Authors:   Mentor Graphics Corporation, Wilsonville, OR, USA, Mikjaniec T. , Blais P. ,   Mentor Graphics Corporation, Wilsonville, OR, USA, Parry J. ,   Mentor Graphics Corporation, Wilsonville, OR, USA
Published: July 2023

In a study by Ma et al. (2010), an innovative honeycomb heatsink design for an LED lighting system was analysed using computational fluid dynamics (CFD) and experimentation. The previous simulation results were replicated using an immersed boundary approach, validating the code against that used in the earlier study. When we looked critically at the images of the experiment in Ma et al. (2010), we noted some discrepancies between the simulation model and the experimental setup. Although the experimental setup was not fully described, we were able to identify a number of issues and make near-exact estimates of the dimensions and other values needed to include their effects in the simulation. The resulting simulation matched the test data very well. In this paper, we present the rationale for applying a different approach that is commonly used in electronics thermal design. We also describe the different aspects of the alternative CFD technology used, as these will not be familiar to most readers, to describe how it can handle fluid flow and heat transfer within complex geometries without simplification. These benefits are illustrated using the honeycomb heatsink example.
Numerical Simulation of Painting Processes
Authors:   Institut für Industrielle Fertigung und Fabrikbetrieb, Universität Stuttgart, Germany, Scheibe Andreas , Westkämper Engelbert ,   Institut für Industrielle Fertigung und Fabrikbetrieb, Universität Stuttgart, Germany, Ye Qiaoyan ,   Institut für Industrielle Fertigung und Fabrikbetrieb, Universität Stuttgart, Germany
Published: July 2023

The present contribution summarises ongoing investigations performed at the Institut für Industrielle Fertigung und Fabrikbetrieb (IFF) on the numerical simulation of spray painting in the automotive industry. Numerical models for electro-statically supported or pneumatic painting processes were implemented in a CFD code. These models account for all important effects involved in the relevant physical processes, being able to predict the film thickness distribution and the paint transfer efficiency on the work piece. Some tests on complicated targets have been carried out. The results confirm the applicability and reliability of the chosen models for the painting processes.
Initial Validation of Cross Wind Effects on a Static High-Sided Vehicle
Authors:   School of Civil Engineering, The University of Nottingham, NG7 2RD, Hargreaves D. , Morvan H. ,   School of Civil Engineering, School of Mechanical, Materials and Manufacturing Engineering
Published: July 2023

Computational Fluid Dynamics (CFD) has long been used by the automotive industry to optimise vehicle designs. Typically, simulations are performed with a vehicle moving into stationary air and the effect of the wind is ignored. This paper brings the wind effects to the fore and describes the set-up of a series of CFD simulations with a moving vehicle subject to a strong cross wind. The results from a series of CFD simulations of a static vehicle subject to a cross wind from a number of yaw angles are compared against both full scale and wind tunnel data. All simulations are transient and time-averaged values of drag, lift and overturning moments are presented. The positive and negative aspects of the modelling are discussed and a number of ideas for future work are presented.
Simulation of a Plasma Enhanced µ-jet-CVD Process
Authors:   Fraunhofer Institute SCAI, 53754 St. Augustin, Dehning C. , Holländer A. ,   Fraunhofer Institute IAP, 14476 Golm, Leventi-Peetz A-M. ,   Fraunhofer Institute SCAI, 53754 St. Augustin, Silmy K. ,   Fraunhofer Institute IAP, 14476 Golm
Published: July 2023

We present results of a coupled calculation to simulate the combined movement and plasma excitation of a process gas, accelerated in the form of a fine beam, known as micro-jet (µ-jet-CVD), between the RF electrodes of a CVD-plasma-reactor, before it reaches the deposition surface. The form and geometry of the deposition, as well as its chemical and physical properties, depend on the chemical properties of the gas, the externally supplied electrical energy as well as the gas-dynamical characteristics of the flow [1]. Previous open jet numerical simulations have examined the possibility of an existing direct analogy of the deposition form to the form of jet lines-geometry for corresponding pressure values in the reactor device. The present preliminary study shows the feasibility of flow coupled to plasma-excitation simulation calculations. The process simulated here is most probably well away from the equilibrium state.
Simulations of Viscoelastic Polymer Solution Flows
Authors:   Fraunhofer Institute for Industrial Mathematics (ITWM), Fraunhofer-Platz 1, D-67663 Kaiserslautern, Germany, Niedziela D. , Latz A. ,   Fraunhofer Institute for Industrial Mathematics (ITWM), Fraunhofer-Platz 1, D-67663 Kaiserslautern, Germany, Iliev O. ,   Fraunhofer Institute for Industrial Mathematics (ITWM), Fraunhofer-Platz 1, D-67663 Kaiserslautern, Germany
Published: July 2023

Many natural and synthetic fluids are viscoelastic materials i.e. the stress at a certain fluid particle depends upon the history of the deformation experienced by that particle. Polymer melts and most polymer solutions are examples of such liquids. Simulation of the flow of these fluids is therefore of great interest for the plastic industry. Viscoelastic fluids are examples of non - Newtonian fluids. While the Newtonian fluids are characterised by a constant viscosity (i.e., constant ratio between shear stress and the rate of strain), the non-Newtonian fluids require more complicated constitutive relations in order to close the governing system of equations...
Multibody Simulation of an Oscillating Aeroelastic Wing Model
Authors:   DLR German Aerospace Center, Institute of Aeroelasticity, D-37073 Göttingen, Germany, Arnold J. , Einarsson G. ,   DLR German Aerospace Center, Institute of Aerodynamics and Flow Technology, D-38108 Braunschweig, Germany, Krüger W. ,   DLR German Aerospace Center, Institute of Aeroelasticity, D-37073 Göttingen, Germany
Published: July 2023

The central challenge is to simulate the time-accurate aeroelastic coupling of the flexible wing model of a transport aircraft with a non-linear aerodynamic solver in forced oscillations of large amplitude which are superimposed by rigid body motions. The rigid motions introduce flight mechanical aspects to the aeroelastic simulation. The simulation platform described in this work is one of two investigated variants in the DLR project SikMa and is characterized by the use of a multibody system (MBS) to account for the elastic structure as well as the flight mechanics and its loose coupling to the computational fluid dynamics (CFD) software. The exchanged data is interpolated with a commercial mesh coupling tool and transferred through an internet socket allowing a distributed computational environment. Simulations for the wind tunnel setup of the wing model cover the prediction of the aeroelastic state of equilibrium and forced oscillations for heave and pitch excitations. In the case of equilibrium, the simulation results are partially compared to wind tunnel data.
Numerical Simulation of Coupled Fluid-Solid Problems: State of the Art and Applications
Authors:   Fachgebiet Numerische Berechnungsverfahren im Maschinenbau Technische Universität Darmstadt Petersenstr. 30, D-64287 Darmstadt, Germany, Schäfer M.
Published: July 2023

The paper gives a survey on relevant topics related to the numerical simulation of coupled fluid-solid problems. Firstly, the corresponding problems are classifed according to different possible coupling mechanisms. The modelling of the problems within a continuum mechanical framework are discussed and numerical aspects related to discretization and solution procedures are addressed. Exemplary approaches for these issues are indicated. A variety of numerical examples involving various coupling mechanisms are presented, including a discussion of questions of numerical accuracy and computational efficiency of numerical solution procedures.
Free Surface Jet Flow Interaction with a Pelton Bucket
Authors:   Sulzer Markets & Technology Ltd., Sulzer Innotec, CH-8401 Winterthur, Switzerland, Muggli F. , Wintergerste T. ,   Sulzer Markets & Technology Ltd., Sulzer Innotec, CH-8401 Winterthur, Switzerland
Published: July 2023

The various flow phenomena in a Pelton turbine are quite complex and include the interaction of free surface jets with buckets in a rotating frame of reference. As the use of CFD for such flows is rather new it was decided to carry out individual validations of the flow codes for the different flow features. The main focus is the interaction of the jet with the bucket. The flow structures upstream of the jet have a strong influence on the jet shape and direction as well as on the secondary flow structure in the jet. Careful validations proofed that the selected CFD codes are able to compute these flows accurately. Based on this experience the flow of the free surface jet interacting with the buckets has been computed and the results have been compared to experimental data. These comparisons are in good agreement and provide the designer of Pelton turbines with a new insight and data previously not available. Inclusion of CFD flow predictions into the design process of Pelton turbines reduces development time and opens up new opportunities for optimization.
Simulation of Flows With Free Surfaces
Authors:   CD-adapco, Nürnberg Office, Germany, Muzaferija S. , Perić M. ,   CD-adapco, Nürnberg Office, Germany
Published: July 2023

Flows with free surfaces are often encountered in engineering and environment, in many variations. In this manuscript we present the state-of-the-art in simulating flows with free surfaces in complex geometries. The two major groups of methods for computing free surface flows – interface-tracking and interface-capturing – are briefly described. The emphasis is on presenting the advantages and disadvantages of each class with respect to particular application areas, ranging from the micro-scale (droplet and jets) to large-scale flows (ocean waves). Results from selected applications are used to demonstrate the quality of obtainable solutions.
Numerical Analysis of Material Flow in Continuously Reinforced Extrusion of Profiles
Authors:   University of Dortmund, Germany, Schikorra M. , Schomäcker M. ,   University of Dortmund, Germany, Kleiner M. ,   University of Dortmund, Germany
Published: July 2023

The production of continuously reinforced profiles by use of aluminum as base material and a reinforcement made of steel or carbon offers a great potential for modern lightweight constructions. Within this scope, they present the potential for an increase in usage of space frame constructions in automotive or aerospace engineering. But the insertion of reinforcement in the material flow of the extrusion process leads to a significant local perturbation inside of the forming tool: while the velocity of the base material increases due to the increasing press ration the velocity of the reinforcement remains constant at the profiles out-coming velocity. These effect leads in the compound zone to the induction of tensile stresses into the reinforcement which result in failures like cracking during the extrusion process. By use of a coupled thermo-mechanical finite element simulation with the commercial fe-codes Superform from MSC and HyperXtrude from Altair the velocity fields of an extrusion process with and without reinforcement were calculated and the resulting stress components were analysed. Based on these results, a process optimisation to reduce stresses on the reinforcement has been carried out, for example by a modification of the tool geometry. The numerical results went along with experiments to verify the calculated failures and the optimised process.
Simulation of Flows in Complex Geometries: New Meshing and Solution Methods
Authors:   CD-adapco, Nürnberg Office, Dürrenhofstraße 4, 90402 Nürnberg, Germany, Perić M.
Published: July 2023

The use of CFD is spreading in all areas of engineering. The flow domains are usually very complicated, which places high demands on both meshing and solution methods. In this manuscript the newest developments in the handling of complex geometries in CFD are presented. The limitations with respect to the shape of control volumes that may appear in a numerical grid are lifted: cells of arbitrary polyhedral shape are allowed. CAD-integration of all CFD tools and automatic generation of polyhedral meshes, as well as a solution method that can use such meshes, are also presented and the advantages of the new technology are discussed. The emphasis is on CAD integration, automatic mesh generation, and optimisation of mesh quality. The aim of all of these measures is the shortening of analysis time in all phases of a CFD simulation and at the same time an improvement of solution quality.
Turbulence Modelling for Technical Flows
Authors:   ANSYS-CFX Otterfing, Germany, Menter F.
Published: July 2023

The paper describes the need for turbulence modelling in industrial flow simulations. It will describe the general problem in the simulation of turbulent flows and the required averaging procedures to arrive at a manageable equation system. The principal concepts behind turbulence models will be described and some current model formulations will be described briefly. Simulations will be shown for generic testcases and industrial applications.
Searching For Black Holes Using Auto Differentiation
Authors: Doyle William
Published: July 2023

This study presents GravAD, a novel approach for detecting gravitational waves using automatic differentiation and JAX. GravAD demonstrates comparable signal-to-noise ratio and mass values to established LIGO pipelines with a significant reduction in the number of templates. Limitations include the inability to handle binary neutron star systems and some lower-mass black holes. Leveraging JAX’s acceleration, GravAD offers potential as a rapid preliminary tool for gravitational wave detection. Future work includes further optimisation of functions, exploration of alternative optimisation algorithms, real-time data analysis adaptation, and expanding the scope to handle a broader range of astrophysical sources.
PENGARUH KOMUNIKASI, BUDAYA KERJA DAN TANGGUNG JAWAB TERHADAP KINERJA PEGAWAI PADA BADAN PUSAT STATISTIK PROVINSI SULAWESI TENGGARA
Authors: Eka Baktiar  , Bakhtiar Abbas  , Muh. Nur
Published: July 2023

Penelitian ini bertujuan untuk mengetahui dan menganalisis pengaruh komunikasi, budaya kerja dan tanggung jawab terhadap kinerja pegawai pada Badan Pusat Statistik Provinsi Sulawesi Tenggara. Hasil penelitian menunjukkan bahwa: (1) Komunikasi, budaya kerja dan tanggung jawab berpengaruh positif dan signifikan terhadap kinerja pegawai pada BPS Provinsi Sulawesi Tenggara.  (2) Komunikasi berpengaruh positif dan signifikan terhadap kinerja pegawai pada BPS Provinsi Sulawesi Tenggara. (3) Budaya kerja berpengaruh positif dan signifikan terhadap kinerja pegawai pada BPS Provinsi Sulawesi Tenggara. (4) Tanggung jawab berpengaruh positif dan signifikan terhadap kinerja pegawai pada BPS Provinsi.
PENGARUH GAYA KEPEMIMPINAN DAN MOTIVASI KERJA TERHADAP KINERJA KARYAWAN PADA PT. PEGADAIAN CABANG MANDONGA
Authors: Fransiska Nia  , Ibnu Hajar  , Asraf
Published: July 2023

Penelitian ini bertujuan untuk mengetahui dan menganalisis: 1) Pengaruh Gaya Kepemimpinan dan Motivasi Kerja terhadap Kinerja Karyawan PT. Pegadaian Cabang Mandonga; 2) Pengaruh Gaya Kepemimpinan terhadap Kinerja Karyawan PT. Pegadaian Cabang Mandonga; 3) Pengaruh Motivasi Kerja Karyawan terhadap Kinerja Karyawan PT. Pegadaian Cabang Mandonga.  Hasil penelitian ini menyimpulkan bahwa: 1) Dari hasil uji simultan yang dilakukan pada hipotesis pertama, maka Gaya Kepemimpinan dan Motivasi Kerja berpengaruh positif dan signifikan terhadap Kinerja Karyawan Pada PT. Pegadaian Cabang Mandonga. Hal ini berarti bahwa Gaya Kepemimpinan yang baik dan Motivasi Kerja yang kuat dapat meningkatkan kinerja karyawan pada PT. Pegadaian Cabang Mandonga; 2) Berdasarkan hasil uji parsial yang dilakukan pada hipotesis kedua, dapat disimpulkan bahwa Gaya Kepemimpinan berpegaruh positif dan signifikan terhadap Kinerja Karyawan pada PT. Pegadaian Cabang Mandonga. Hal ini berarti Gaya Kepemimpinan yang baik dapat meningkatkan kinerja karyawan pada PT. Pegadaian Cabang Mandonga; 3) Berdasarkan hasil uji parsial yang dilakukan pada hipotesis ketiga, dapat disimpulkan bahwa Motivasi Kerja berpengaruh positif dan signifikan terhadap Kinerja Karyawan Pada PT. Pegadaian Cabang Mandonga. Hal ini berarti Motivasi Kerja yang kuat dapat meningkatkan kinerja karyawan pada PT. Pegadaian Cabang Mandonga.
PENGARUH INSENTIF NON FINANSIAL DAN PELATIHAN KERJA TERHADAP PRODUKTIVITAS KARYAWAN PT. PLTU NII TANASA KONAWE
Authors: Muh. Mulyo Sugirmantoro  , Samdin  , Abdul Hakim
Published: July 2023

Tujuan penelitian ini untuk menganalisis dan mengetahui: (1) pengaruh insentif non finansial dan pelatihan kerja secara simultan terhadap produktivitas karyawan, (2) pengaruh insentif non finansial secara parsial terhadap produktivitas karyawan, (3) pengaruh pelatihan kerja secara parsial terhadap produktivitas karyawan PT. Pembangkit Listrik  Tenaga Uap (PLTU) Nii Tanasa Konawe. Penelitian ini merupakan penelitian deskriptif kuantitatif. populasi dalam penelitian ini adalah seluruh karyawan tetap Pembangkit Listrik Tenaga Uap (PLTU) Nii Tanasa Konawe yaitu sebanyak 150 orang sedangkan sampel dalam penelitian ini sebanyak 60 orang. Pengambilan sampel dalam penelitian ini dengan menggunakan teknik sampling random sehingga diperoleh jumlah sampel sebanyak 60 orang.Analisis data menggunakan analisis regresi linear berganda. Hasil penelitian ini menunjukkan bahwa: (1) Insentif Non Finansial Dan Pelatihan Kerja secara simultan berpengaruh positif dan signifikan terhadap Produktivitas Karyawan, (2) Insentif Non Finansial Berpengaruh Positif Dan Signifikan Terhadap Produktivitas, (3) Pelatihan Kerja Berpengaruh Positif Dan Signifikan Terhadap Produktivitas Karyawan PT. Pembangkit Listrik Tenaga Uap (PLTU) Nii Tanasa Konawe.
DAMPAK PANDEMI COVID-19 TERHADAP KINERJA PENJUALAN PT. SINAR GALESONG KENDARI
Authors: Sukriansyah  , Abdul Azis Muthalib  , Rince Tambunan
Published: July 2023

Penelitian ini bertujuan untuk mengetahui Dampak Pandemi Covid-19 Terhadap Kinerja Penjualan PT. Sinar Galesong Kendari. Penelitian ini meruapakan penelitian Kuantitatif Statistik. Data penelitian ini di peroleh melalui dokumentasi. Metode analisis data yang digunakan adalah analisis statistik deskriptif dengan alat uji yang di gunakan yaitu uji normalitas dan uji Paired Sample Test. Hasil penelitian menunjukkan bahwa adanya perbedaan yang siginifikan antara kinerja penjulan PT. Sinar Galesong Kendari sebelum masa pandemi Covid-19 dengan kinerja penjualan PT. Sinar Galesong Kendari selama masa pandemi Covid-19 yang artinya pandemi Covid-19 berdmpak negatif terhadap kinerja Penjualan PT. Sinar Galesong Kendari.