bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthetic X-ray Image Generation for Non-Destructive Testing using Generative Adversarial Networks
Authors:   Fraunhofer Institute for Integrated Circuits (IIS), Gosswami Bishwajit Mohan ,   Fraunhofer Institute for Integrated Circuits (IIS), Chanda Rajib Kumar ,   University of Erlangen-Nürnberg (FAU), Wittenberg Thomas
Published: May 2024

Developing and optimizing a Machine Learning (ML) based Non-Destructive Testing (NDT) tool for automotive
manufacturing can be challenging due to the need for a significant amount of annotated training data. Obtaining
such an extent of real X-ray images of different defects can be challenging and expensive. Hence, generating
synthetic images with adequate defects is a viable option to fill this gap. This contribution presents a novel
approach that harnesses Generative Adversarial Networks (GANs) to simulate industrial X-ray images of specific
parts of a car wheel (rim and spokes) with defects and their annotations. The presented method draws inspiration
from techniques used in medical healthcare radiography as well as the NDT field for simulating synthetic X-ray
images. We propose a novel deep neural network architecture for generating high-resolution X-ray images of size
1024 x 512 pixels with porous defects in specified locations. These images are automatically generated from edge
masks of the desired structure. We conducted separate evaluations for both, the generated images and the included
defects. To assess the generated image quality, we used image properties and structural similarity metrics. The
generated images achieved an MSSIM index of over 0.90. We analyzed the local gray-scale profile of synthetic
images to evaluate the quality of generated defects. A state-of-the-art defect detector (ISAR, developed by
Fraunhofer EZRT) was used to estimate defect detection based on various IoU thresholds.

In conclusion, the presented research demonstrates the feasibility of leveraging GANs to generate synthetic 2D X-
ray image data, including defects for training ML-based NDT tools. This approach opens new possibilities for
developing and optimizing robust NDT solutions by overcoming the challenges of obtaining real data with defects.
ASME Nondestructive Examination (ANDE) Designated Test Organizations (DTOs)
Authors:   Chattanooga State Community College, Potter Lyn ,   Chattanooga State Community College, Clifford Tracie
Published: May 2024

Control of Nondestructive Examination (NDE) and Quality Control (QC) practical examinations are essential for
an ANDE Designated Test Organization (DTO). This presentation describes the infrastructure, security, quality
system, and practical demonstration requirements as part of the application to be recognized as an ANDE DTO. A
key presentation component is the explanation of sourcing, validation, security, and control of the practical
demonstration specimens. Acquisition of the practical demonstration specimens, the examination process steps,
and applicant administration are key to the ANDE DTO examination designation. Practical demonstration
infrastructure includes the physical location, ANDE material and applicant traffic flow, and the sequence of
operations for personal practical demonstrations.

Learn more about the details of ANDE Certification Body (CB) preparation to meet the rigorous quality system
requirements. An ANDE DTO quality system must meet the quality requirements based on ISO 17024 quality
system conformance. Other quality system requirements, dependent on regulatory and statutory criteria such as
nuclear pressure vessel codes compared to non-nuclear pressure vessel codes can impact the designation of the
DTO.

This presentation includes an overview of how the tracking of the applicant, specific NDE/QC methods, test
categorization, and the test specimens are organized. Reference to the ASME Nondestructive Examination (ANDE)
standard will be included as part of this presentation.
Infrared and Visual Fusion Detection Framework for Oil and Gas Pipeline Environmental Inspection
Authors:   University of Electronic Science and Technology of China, Li Jiacheng ,   PipeChina, Zheng Jianfeng ,   University of Electronic Science and Technology of China, Gao Bin ,   University of Electronic Science and Technology of China, Xu Jieyi ,   University of Electronic Science and Technology of China, Zeng Yu ,   University of Electronic Science and Technology of China, Gong Yifei ,   PipeChina, Chen Pengchao ,   PipeChina, Li Rui ,   University of Newcastle, Tian Guiyun
Published: May 2024

The inspection of oil and gas pipeline retains important. These newly constructed pipelines may have defects near
the circumferential welds and potential issues with water accumulation. Improper management of these issues can
lead to severe consequences. Thus, the inner pipe structure detection prior to their operation is critically essential.
Visual camera provides a direct view of the pipeline environment such as circumferential weld seams and water
accumulation. In contrast, infrared thermal camera capture infrared radiation distribution from varied shapes and
materials, offering an indirect insight into the pipeline environment. This paper designs an integrated infrared and
visual NDT system for pipeline detection, capable of capturing time-synchronized infrared and visible image pairs
along with corresponding odometer and gyroscope data for further processing. Moreover, an infrared and visual
fusion detection algorithm is proposed, comprising coarse registration, base detectors, and probability-based late
fusion strategy. The late fusion strategy enhances detection accuracy by leveraging the complementary information
from both infrared and visual modalities. Furthermore, as the focus is primarily on the defects near the
circumferential welds, the size of the circumferential welds in forward images can be used to predict their position
in the circumferential visual detection system, achieving a 96.7% reduction in computational complexity compared
to processing all images. The proposed system and algorithm were actually tested in a 26.8 km 1219 pipeline. The
results verified the reliability of the system and the robustness and accuracy of the algorithm. The demo code is
available at: [https://github.com/ljcuestc/Probability-based-late-fusion.git].
Advanced Excitation Symmetry Analysis Method (ESAM) for improved automated ultrasonic testing of polished materials
Authors:   INSA Centre Val de Loire, Blois campus, University of Tours, Arruga Denis ,   INSA Centre Val de Loire, Blois campus, University of Tours, Dos Santos Serge ,   Inspection et Techniques de Contrôles Spécialisées (ITCS), Brochard Morgan
Published: May 2024

One of the strategic plans of the international NDT community is to define standards for
developing advanced and digitalized non-destructive testing for automated set-up in mass
production [1,2]. Excitation Symmetry Analysis Method (ESAM) are new coded signal
processing tools exploring symmetry properties [3]. ESAM method aims to extract the
nonlinearity from an ultrasound output by studying the property of symmetry of the transfer
function. More precisely, the extraction of nonlinearity is done using basis function associated
to a group which is associated to an a priori transfer function. As soon as the linear tomography
uses the invariant properties of amplitude dependence, nonlinear tomography should exploit
the invariance properties (or symmetry properties) of the complex system. Consequently, the
invariance of the stationary properties of a complex medium would be supposed to be associated
to a signature of the degradation, that will be extracted with advanced signal processing tools.
The idea remains the same: studying the symmetry and more precisely the time reversal one
and the inversion. A signal processing is used to measure discrepancies in the autocorrelation
function (output signal called chirp coda) for two inputs: a signal and its inversion (pulse
inversion). The experiments were done on different sample with and without cracks. It has been
shown that when the nonlinearities are extracted from the chirp coda amplitude are non-
negligible in crack area and nonlinearities are out of phase. Then, mixing symmetries like time
reversal and pulse inversion enable the detection of defect that are difficult to detect with
conventional ultrasound method. Indeed, for such crack a destructive mechanical analysis
called Jomini is done where the material is polished and examined with microscope. The
sensitivity improvement of chirp-coded signal processing has been validated in various domains.
Coded excitation techniques, used in communication systems such as radar and sonar provide
improved SNR without increasing the amplitude of excitation. The typical test equipment
consists of a preamplifier Juvitek TRA-02 (0.02 - 5 MHz) connected to a computer, an amplifier
ENI model A150 (55 dB at 0.3-35 MHz), a shear wave transducer Technisonic (2.25 MHz),
and a longitudinal wave transducer Panametrics V155 (5 MHz). The experimental device was
tested with the V3 calibration block, improved, and specially scaled in order to access to a wide
range of multivalued parameters: mechanical properties, ultrasonic parameters (celerity and
attenuation) and local geometric data.
The Influence of Additively Manufactured Specimen Thickness on Laser-Induced Ultrasonic Signals
Authors:   Xi'an Jiaotong University, Zhang Zhenlong ,   Xi'an Jiaotong University, Li Bing ,   Xi'an Jiaotong University, Gao Fei ,   Xi'an Jiaotong University, Lei Chen ,   Xi'an Jiaotong University, Guo Dongyang
Published: May 2024

Selective laser melting (SLM) technology, employed in metal additive manufacturing, is widely utilised to
fabricate components with precise dimensions and excellent mechanical properties by melting powder layer by
layer. Laser ultrasonic testing is anticipated to be an efficient method for in-line monitoring in the additive
manufacturing (AM) process. The conversion of specimens from thin to thick during the SLM manufacturing
process has an impact on the ultrasonic signals. This paper focuses on the influence of AM specimen thickness
changes on ultrasonic signals. In the finite element analysis, the incremental specimen thickness was maintained
at 0.2 mm, which was the initial value. As the specimen thickness increased sequentially, ultrasonic signals were
obtained from different specimens. The results demonstrate that Lamb waves are generated when the specimen is
thin, and the dispersive characteristics weaken as the thickness increases. The dispersive phenomenon diminishes
significantly once the specimen thickness exceeds 1 mm. By employing the f-k method, calculated dispersion
curves for various specimen thicknesses were obtained. After fitting the derived dispersion curve, a mapping
relationship is established with respect to the specimen thickness. Consequently, the fitting coefficient of the
dispersion curve can therefore be utilized to characterize the thickness of the additive manufactured thin specimen.
Non-Destructive Inspection Method Using Elastic Waves for Quality Management in the Bending Process Region of BFRTP
Authors:   Kyoto University, Okude Nobuhiro ,   Kyoto University, Shiotani Tomoki
Published: May 2024

In order to establish a sustainable infrastructure, structures must maintain their minimum required performance
for an extended period. Typically, existing concrete structures are reinforced with steel, but the susceptibility of
steel reinforcements to corrosion, attributed to factors such as carbonation and chlorides, can lead to performance
degradation, rendering the specified requirements unmet. As a remedy, there has been a growing interest in using
lightweight and corrosion-resistant fiber-reinforced polymer (FRP) bars as an alternative to traditional steel
reinforcement in concrete structures. Particularly noteworthy is the use of FRP bars manufactured with
thermoplastic resins (FRTP) due to their ease of processing and convenient applicability on construction sites. This
study delves into the mechanical behavior evaluation by examining the propagation characteristics of elastic waves
in the curved section of basalt FRTP (BFRTP). Multiple BFRTP bars underwent a 180-degree bending process,
subject to various conditions, including heat and twist variations. Subsequent measurements focused on the
propagation characteristics of elastic waves in the curved sections, emphasizing wave attenuation, frequency
features, and propagation velocity. Additionally, bending tensile tests were conducted on the curved bars, and a
comparative analysis was performed between the tensile strength and the aforementioned elastic wave propagation
characteristics. The results affirm a consistent correlation between the propagation characteristics of elastic waves
(amplitude ratio, centroid frequency, velocity) during the traversal of the curved BFRTP section and its tensile
strength. Notably, both centroid frequency and velocity exhibited correlation coefficients exceeding 0.7,
suggesting their potential efficacy as reliable indicators for estimating tensile strength.
Efforts to Minimize Work Accidents at PT. Behavior Based Safety (BBS) Method
Authors: Nibraas Nabiiah Harijadi Naufal , Mardyansyah Ardhan Firman , Vanes Vanesa , Syifa Zahra , Dwi Cahyani Nanda , Handayani Epy , Ramadan Gilang
Published: May 2024

PT. X is a company engaged in the automotive sector, focusing on truck repair. The purpose of this report is to minimize work accidents through a behavior-based safety (BBS) approach at PT. X. The Behavior Based Safety (BBS) program is an approach to safety based on human behavior. It aims to increase employee awareness, involvement, and responsibility to create a safe working environment. The BBS program at the company aims to improve employee compliance and change work behaviors. The method used in the behavior-based safety approach is called DO IT. The DO IT method consists of 4 steps: Define, Observe, Intervene, and Test. The research was conducted using a qualitative method involving in-depth interviews with workshop management, direct observation, and analysis of documents related to BBS implementation. The results of the research indicate that the implementation of BBS will significantly contribute to improving the performance of the automotive workshop.
The deepest map – The high-stakes race to chart the world’s oceans
Authors: Brunt Douglas Paul
Published: May 2024

Award-winning environmental and ocean journalist Laura Tretheway takes readers on an interesting and informative voyage into the seascape of ocean mapping in their 2023 book, The Deepest Map – The High-Stakes Race to Chart the World’s Oceans.
AN ANALYSIS OF THE EFFECT OF EARLY BAPTISM ON FAITHFULNESS IN THE CHURCH IN THE SEVENTH DAY ADVENTIST CHURCH MORIA HILL CHURCH BASED ON MARK 16:16
Authors: Notty Chiccof Stephenson Benerivo , Mangadar Simbolon
Published: May 2024

This study aims to analyze the effect of early baptism on church faithfulness in the Seventh-day Adventist Church, especially in the Moria Hill Congregation, with reference to Mark 16:16. The research method used is a qualitative method with a case study approach. Data were collected through in-depth interviews with congregation members who have experienced baptism, as well as analysis of Scripture texts and related literature. The results showed that baptism too early can negatively impact faithfulness in the church, as in some cases, individuals who are baptized too soon may not have fully understood their commitment to their faith. The implication of this finding is the importance of a careful approach in the baptismal process, by providing a deep understanding of faith commitment before one is baptized. This research is expected to contribute to the development of more effective and sustainable baptismal practices in the context of the Seventh-day Adventist church
KETERLIBATAN ORANG MUDA DALAM KEGIATAN PEMUDA DI GEREJA MASEHI ADVENT HARI KETUJUH JEMAAT TARAKAN TERHADAP PERTUMBUHAN IMAN SESEORANG (1 TIMOTIUS 4:12)
Authors: Wuisan Dearestly Eftifena Arantxa , Alvyn C. Hendriks
Published: May 2024

Pentingnya peran aktif pemuda dalam kegiatan gerejawi, khususnya di Gereja Masehi Advent Hari Ketujuh Jemaat Tarakan. Fokusnya adalah bagaimana keterlibatan mereka memengaruhi pertumbuhan iman, sesuai dengan ajaran yang terdapat dalam 1 Timotius 4:12. Dengan menggunakan metode pendekatan kualitatif deskriptif, penelitian ini melakukan wawancara mendalam untuk menggali pengalaman dan persepsi pemuda terkait dengan keterlibatan mereka dalam kegiatan gerejawi. Hasilnya menunjukkan bahwa partisipasi aktif pemuda dalam kegiatan gerejawi memiliki dampak yang signifikan terhadap pertumbuhan iman mereka. Mereka mengalami peningkatan dalam keintiman hubungan dengan Allah dan membangun karakter rohani yang kuat melalui interaksi dan pengalaman dalam lingkungan gereja. Temuan ini memberikan wawasan berharga bagi pemimpin gereja untuk merancang program dan strategi yang lebih efektif dalam mendukung pertumbuhan rohani pemuda, terutama di lingkungan Gereja Masehi Advent Hari Ketujuh.Dengan demikian, jurnal tersebut tidak hanya menggarisbawahi pentingnya keterlibatan pemuda dalam kegiatan gerejawi, tetapi juga menyoroti bagaimana hal ini secara konkret memengaruhi pertumbuhan spiritual mereka. Hal ini menegaskan bahwa pemuda memiliki peran yang tidak bisa diabaikan dalam memperkuat kehidupan rohani komunitas gerejawi, dan bahwa upaya untuk mendorong keterlibatan mereka memerlukan perhatian khusus dari pemimpin gereja dan pembuat kebijakan gerejawi.
ANALISIS TERHADAP FUNGSI BAIT SUCI KEPADA BANGSA ISRAEL MENURUT KITAB YEHEZKIEL 43:9-11 DAN IMPLEMNTASINYA KEPADA ORANG PERCAYA MASA KINI
Authors: Barani Zamzius Andrian , Pardosi Milton Thorman
Published: May 2024

Kehidupan orang Kristen (orang Percaya) tidak jauh dari yang namanya Gereja. Karena Gereja adalah pusat peribadatan namun demikian masih banyak orang Kristen yang kurang menunjukan rasa hormat dalam kebaktian dan tidak berlaku sopan di dalam rumah Tuhan. Penulis melalui tulisan ini ingin membantu para pembaca agar sadar tentang betapa berharganya Bait Suci bagi bangsa Israel sehingga para pembaca bisa lebih hormat dan bersyukur saat berada di dalam Bait Suci yang saat ini disebut dengan Gereja karena di dalam Gereja Tuhan hadir untuk kita sembah, puji dan muliakan. Di dalam Gereja kita bisa diajarkan tentang kasih Tuhan, Hukum dan membantu kita agar lebih peka dalam merasakan peringatan dari Tuhan ketika kita hendak melakukan kesalahan.
A Conjoint Study and Segmentation on the Preferred Online Learning Attributes of Senior High School Learners
Authors: Cano Junar
Published: May 2024

The educational systems have been disrupted due to the COVID-19 pandemic that has resulted in the sudden shift in the instructional implementation from face-to-face to fully online distance learning. This quantitative study examined the learners’ socio-demographic characteristics and access to technological resources, preferred online learning attributes, and their segmentation. The study employed a descriptive and exploratory research design. Using Cochran's formula and disproportionate stratified random sampling technique, 300 senior high school learners were identified as respondents of the study. Five online learning attributes consisting of delivery type, lecture, learning tasks, learning materials, and assessment methods were analyzed through the orthogonal plan component of SPSS 22.0. Respondents voluntarily answered 16 profiles with 2 holdouts generated by the orthogonal design using an online 5-point Likert scale. The conjoint analysis revealed that learners' most preferred online learning attributes were assessment methods using multiple-choice and multiple types of exams; synchronous online lectures with slides as the delivery type; individual tasks; and learning materials utilizing visual aids. Further analysis revealed that learners, considering their preferences and profiles, could be classified into two segments based on grade level. Grade 12 learners comprised segment one, and Grade 11 dominated segment two. The results provide insights for academic institutions that learners in different grade levels differ in their learning preferences in an online setup and to reconsider the appropriate pedagogical activities to be utilized in an online learning setup to ensure educational advantage. Therefore, it would be ideal to redesign the curricula and innovate pedagogical approaches based on learners’ preferences and segmentation (grade level) to leverage learning in online education.
Boundless Classrooms and Touchless Bodies: Teaching Physical Education Online
Authors: Paderanga Lydie
Published: May 2024

This qualitative study explored the PE teachers’ experiences in teaching online during the outbreak of the COVID-19 pandemic in the Philippines.  Using the phenomenological approach, it investigated the pedagogical practices, the educational theories that guided the participants, and their reflections and insights on teaching PE online. In order to describe the PE teachers’ pedagogical practices and perspectives regarding online teaching, the following research questions guided the study: (1) What are the daily instructional practices of the participating online PE teachers?; (2) What educational theories guided these participants in teaching online?; and (3) What are the perspectives and reflections of the participants in teaching PE online? Data collection methods for this case study included 1) interviews with online PE teachers, 2) virtual classroom observations and field notes, and 3) text messaging and e-mail communications between the researcher and the participants. Content and thematic analyses were used to interpret the results of the study.  Results showed that teachers provided demonstration classes and allowed students to be creative in submitting their outputs.  They practiced differentiated instruction, challenged the creativity of students and developed innovative ways of teaching PE online.  They implicitly ascribed to Gardner’s multiple intelligence theory and Bandura’s Social Learning Theory.  The results of this study supported the premise that online college PE can be taught online and is workable this time of pandemic.
Towards an Age-friendly University: An Intergenerational Study among FICS-UPOU Graduates
Authors: Jarmin Suarez Margaret , Calora Patricia , Lleva Yrelle Mae , Basan Germaine
Published: May 2024

In this study, the educational experience of graduates under the Faculty of Information and Communication Studies (FICS) for A.Y. 2017-2018 was assessed through an intergenerational lens. Respondents’ age range was categorized into three generations: Baby Boomers (1945-1965), Generation X (1966-1985), and the Millennials (1986-2005). A survey questionnaire was used to gather data on the respondents’ socio-demographic profile (age, gender, and employment status) and educational experience. Educational experience was assessed through five variables: relevance of curriculum, usefulness of the program, quality of instruction, effectiveness of online delivery, and current employability. Generational disaggregation of data was done before data analysis. Afterward, the collected data were analyzed using both descriptive and inferential statistics. Aside from measures of central tendency, the means test, Kruskal-Wallis test, and Spearman correlation were also used to determine the relationship between the respondents’ socio-demographic characteristics and educational experience. On average, the respondents found their UPOU learning experience to be quite positive – indicating an age-friendly curriculum flexible to the needs of different generation cohorts. Results showed that there was no association between gender and learning experience; and age group and learning experience. On the other hand, employment status was found to have a weak inverse correlation with two indicators: effectiveness of online delivery; and current employability. The results of the study presented implications for instructional design and improvement of online delivery to achieve an age-friendly university consistent with its lifelong learning philosophy.
Evaluation of the UPOU MOOC "Principles of Graphic Design" using Product Variable of Biggs' 3P Model
Authors: Cerdeña Ma. Gian Rose , Mangubat Lexter , Gelisan Luisa , Crisanto Mari Anjeli
Published: May 2024

As Massive Open Online Courses (MOOCs) are being recognized as a link between higher education and the increasing demand for employability, it is imperative to employ continuous evaluation for quality assurance. This research aimed to evaluate the University of the Philippines Open University (UPOU) MOOC “Principles of Graphic Design” in accordance with the MOOC Quality Guidelines developed by the Commonwealth of Learning. With Biggs’ 3P Model incorporated in the MOOC Quality Guidelines, this evaluation research focused on the product variables of the model: completion/retention and certification rates, and enjoyment and self-satisfaction. The completion and certification rates were computed using LMS analytics, while the enjoyment and self-satisfaction rates were evaluated using a survey instrument based on the learner ratings for the product variable in the Guidelines for Quality Assurance and Accreditation of MOOCs using a five-point Likert scale on outcomes perception, continuing education, employment opportunities, and socializing. With a total of 22,942 enrolled students, 7,620 managed to complete the course and receive certificates. Of these, a total of 7,239 agreed to be survey respondents. Results of the study showed high satisfaction rates, with 77.95% of the respondents giving "very satisfied" rates to the said MOOC. The mean scores for three out of the four learner ratings were above four (4.32 to 4.88), with the socializing component given a neutral rating (3.14 to 3.59). Overall, results showed high completion and certification rates, as well as enjoyment and self-satisfaction ratings for the MOOC.
Numero completo
Authors: AA. VV.
Published: May 2024

Il volume 7 (2018) raccoglie articoli di studiose e studiosi che riflettono sulla scrittura delle donne e sulle donne nell'ambito della letteratura italiana.
--------------------------------------------------------------------------------------------------------
Volume 7 (2018) features essays by scholars who reflect on women’s writing and the role of women in Italian literature.
The Influence of Nursing Organizational Culture and Job Stress On Turnover Intention With Nurses' Commitment In Intervening Variables In Hospitals
Authors: Nafiah Taniatun , Anisah Iin , Susijawati Noveria
Published: May 2024

Turnover Intention is an interesting topic to discuss in a company because moving employees will disrupt company operations both in terms of cost and time. This study was conducted to determine the influence of nursing organizational culture and work stress on turnover intention with nurse commitment as an intervening variable in hospitals. The population in this study was employees in the hospital totaling 421 people with the number of nurses who were a population sample of 150 people. This study used quantitative methods with data collection through the distribution of questionnaires to hospital nurses. These findings provide important insights for hospitals and communities in understanding the factors that influence turnover intention.
Prototyping with purpose: Increasing participatory design with malleable interactive prototypes
Authors:   , Wik Malin
Published: May 2024

This work emphasises the long-standing focus on democratisation in the participatory design field by analysing how participation can be achieved (the pragmatics of participation) and how participation can be increased (the politics of participation) through malleable interactive prototyping.  Malleable interactive prototyping refers to the design of digital prototypes of IT systems that are open enough for a designer and a user to collaboratively design and re-design. The interactiveness allows the user to experience the interaction with the system and its design and also allows for redesign during the interaction. This type of prototyping is explored in the collaborative design of an IT system between a designer and citizens at a hospital, and in a short series of co-design workshops with young learners as designers within a component of their digital competence education in upper secondary school. Through a qualitative analysis, this work demonstrates that malleable interactive prototyping increases participation and participatory design. Four conclusions are proposed for the participatory design field: malleable interactive prototyping gives users an informed voice in the design process, allows users to collaboratively design an IT system with a designer, facilitates mutual learning between designer and user, and increases the ecological validity of the collaborative design. Furthermore, the explorations contribute to the education field by showing that malleable interactive prototyping can explicate future use and the user as well as the role of the user and the IT system for young learners, thus enabling young learners to experience democratic IT systems design processes. These conclusions suggest that school policy writers should consider including a socio-technical perspective in the computational-focused curriculum and that educators should contemplate the delivery of this education across all programmes.
A Balaton 3D hidro- és termodinamikai modelljének továbbfej-lesztése
Authors: Lükő Gabriella , Torma Péter
Published: May 2024

Célunk egy olyan igazolt hidro- és termodinamikai modell felállítása a Balatonra, amely részletes transzport vizsgálatokra és a későbbiekben akár az áramlások és hőmérsékleti viszonyok előrejelzésre is alkalmas lehet. Sekély tavakban szeles időben a hullámzás által befolyásolt felszíni és a fenékközeli határrétegek átfedhetik egymást, ennek következtében összetett áramlási és keveredési viszonyok alakulnak ki. Ezzel szemben, szélcsendes időben gyenge hőmérsékleti rétegződés jön létre, amely jellemzően éjszaka felszakad, napi ciklust eredményezve. A numerikus szimulációkhoz az FVCOM modellt alkalmaztuk, valamint áramlás- és hőmérsékletméréseket végeztünk egy nyílt vízi helyszínen, valamint a hőmérsékleteket egy partmenti helyen is rögzítettük a Keszthelyi-medencében. A modellt térben változó szélmezővel hajtjuk meg, annak érdekében, hogy figyelembe vehessük a belső határréteg-fejlődés és mezoskálájú változékonyság hatását a vízfelszínen ható szél-csúsztatófeszültségre. Előbbi a szélsebesség meghajtási hossz menti növekedését eredményezi. Megmutatjuk, hogy az inhomogén szélmeghajtás elengedhetetlen mind a tó különböző pontjain mért vízszint-kilendülések, mind a Keszthelyi-medence nyílt vizén jelentkező áramlási irányok pontos modellezéséhez. Az áramlás mellett a hőmérsékleti szerkezet megbízható szimulációja érdekében érzékenységvizsgálatot végeztünk a modell paramétereire, beleértve a légkör-víz közötti hőcsere paramétereit, a fénykioltási együtthatót és a turbulenciamodell háttérkeveredési együtthatóját. Összehasonlítjuk a Keszthelyi-medence közepén a modellezett és mért áramlásokat, hőmérsékleteket és annak rétegződését, utóbbit a potenciálisenergia-anomália mutatójával. A többcélú kalibráció nagy számú szimulációt igényel, hogy lefedjük a széles paraméterteret és egy optimális paraméterkombinációt találjunk.
Kezelt szennyvíz újrafelhasználásának lehetőségei és kihívásai Magyarországon
Authors: Györki Gábor
Published: May 2024

A szennyvízkezelés évezredes múltra tekint vissza, ezen kívül a szennyvíz újrafelhasználására is többször volt már példa a történelem során. Napjainkban a vízkészleteket fenyegető egyre súlyosabb és változatosabb szennyezések, valamint a gyakori felelőtlen vízgazdálkodás, a népességnövekedés és a globális felmelegedés okozta általános édesvíz-hiány a fő hajtóerő az újrafelhasználás mögött. Az utóbbi évtizedekben jelentős fejlődés történt mind az analitikában, mind a szennyvíztisztítási technológiák körében, nem utolsó sorban a tisztítást és az újrafelhasználást támogató jogi intézkedések tekintetében. A látszólag számos előnnyel bíró felhasználási módok bevezetése gyakran pénzügyi, technológiai, vagy jogi akadályokba ütközik, a nem körültekintő gyakorlat pedig akár több problémát is okozhat, mint amennyit megold. Jelen tanulmány a releváns szakirodalom és a szabályozások áttekintésével kíván átfogó képet adni a szennyvíz újrafelhasználásának lehetőségeiről, előnyeiről és hátrányairól, a megvalósításának nehézségeiről és a fejlődési lehetőségekről.
Peran Guru Pendidikan Agama Kristen dalam Membangun Konsep Diri Positif Peserta Didik
Authors: Riskha Oktavia , Wicaksono Arif
Published: May 2024

Konsep diri positif yang timbul dari dalam diri seseorang berawal dari suatu keyakinan dan pola pikir positif yang dimiliki seseorang terhadap kemampuan dan potensi yang ia miliki. Konsep diri yang negatif ditujukan bagaimana seseorang malu terhadap dirinya dengan keadaan fisik yang berbeda, minder, tidak mau bertanya kepada guru/pendidik jika belum mengerti materi yang disampaikan oleh pendidik, tidak mau berpendapat, tidak mau berteman dengan teman-temannya. Tujuan dari diskusi ini adalah untuk mengubah pemikiran, perspektif dan sikap seseorang yang sebelumnya irasional menjadi rasional. Tujuannya adalah untuk memperbaiki dan mengubah sikap, persepsi, cara berpikir, dan keyakinan seseorang yang irasional menjadi rasional sehingga mereka dapat berkembang dan mencapai realisasi dari yang optimal. Jenis penelitian yang dilakukan dalam makalah ini adalah melalui kualitatif. Dengan peran dari pendidik yang membangun kembali konsep diri yang positif terhadap peserta didik, akan dapat perubahan terhadap peserta didik, yaitu peserta didik tidak lagi malu dengan keadaan fisiknya, serta mau menerima kekuranngan yang ia miliki pada dirinya, dan berusaha mengoptimalkan potensi yang ia miliki.
Managing operational risk in banks during times of instability
Authors: Sobanova Jelena , Kudinska Marina
Published: May 2024

Operational risk management for banks is becoming more important every year and getting more crucial during times of instability. According to the research, most of the banks were not prepared for COVID-19-pandemic and had to review operational risk procedures immediately to secure their businesses in working from home environment. The War in Ukraine nowadays also influenced operational risk management in banks significantly. The aim of the paper is to understand the operational risk management challenges in banks during times of uncertainty, to highlight the operational risk management weaknesses when working remotely during pandemic or other unpredictable circumstances and to find out potential operational risk management solutions for banks. By gathering and analysing survey data from the finance sector's workforce and empirical evidence, the research is aimed to identify the gaps in managing operational risk in banks during times of instability, making the subject current and relevant. Factors influencing operational risk management form the basis of the qualitative method used in this study. The key findings and results are that banks must re-evaluate their business continuity planning strategies and reinforce their remote working policies, to adjust the controls that exist and enhance the processes that don't have any controls at all with the focus on transaction processing.
Does time matter?: Impact of financial decision-making abilities on financial choices mediated by time perspective
Authors: Imtiaz Arif , Khan Lubna , Irshad Nida
Published: May 2024

The aim of this paper is to examine the relationship between financial decision-making ability and financial choices, and also to check the mediating role of time perspective in this relationship. Financial decision-making ability is composed of two factors: financial behavior (FB) and financial literacy (FL). Whereas, three financial choices are used, which are: investment, savings, and consumption. Using structural equation modeling (SEM), the sample of 380 participants was used to analyze the results. The findings indicate that both financial literacy and financial behavior significantly increase the investment and choices of individuals, while financial behavior also increase consumption. In addition, study found that different factors of time perspective also mediate the relationship between financial decision-making ability and financial choices. The paper concludes with significant policy implications.
Applying attitude theory to determine user security approaches
Authors: Szűcs Kata , Tick Andrea , Reicher Regina
Published: May 2024

Mobile phones and internet form a crucial part of modern life, which raises important questions, such as security, data protection and privacy. Countless studies examine what influences users' approaches towards security. The attitude theory gives the basic background to the present study through which the topics of cyber safety and security, data protection and privacy are examined. The three components of attitude, which served as the three pillars of the applied survey, are: (1) the cognitive component (belief and knowledge), (2) the affective component (feelings) and (3) the behavioural component (the effect of the attitude on the users' behaviour). Self-reported security knowledge and feelings about security were assessed, out of which three factors were formed using EFA. The security behaviour of each factor was examined to determine the consistency of the responses. Moreover, the three factors helped to identify three separate clusters. As a conclusion it can be stated that the theory of attitudes can help understanding user security behaviour better. Finally, future research directions are suggested.
A bibliometric and thematic review of green marketing and green consumer behavior research from 2000 to 2022
Authors: Agarwal Sulabh , Singh Dubey
Published: May 2024

Overconsumption habits of consumers have led to the exhaustion of resources at the blazing rate which causes damage to the environment. Green marketing evolved as an important medium to satisfy human wants with minimum negative impact on the eco system. Thus, many researches been conducted in the area of green marketing over the last two decades. However, the discussion of its impact on consumer behavioural context is still having deficit of systematic and thorough bibliometric research. This paper aiming to consolidate the standard research on green marketing by bibliometric study of published papers and articles during last 22 years from 2000 to 2022. In addition, the results show evolving trends of keywords, productive and impactful countries, organizations or institutions, authors, research articles and journals; international collaborations and authorship patterns on green marketing and its impact on consumer behavior. During the study period, a gradual increase in the research on green marketing is observed which has surmounted after Covid 19 spread. A total of 482 articles that were published in 216 journals, books, conference proceedings, etc catalogued in renowned index namely, Scopus and WOS (Web of Science) for this period were identified and analysed using bibliometric technique. Future researches may cover other databases for more comprehensive analysis.
Assessing the spillover of shocks from the oil market to the stock market of different industry sectors in America: A quantile regression approach
Authors: Bakić Sanja
Published: May 2024

The research problem of this paper examines the impact of Brent oil price shocks on stock returns of nine companies from the US market, operating in three different industrial sectors. The observation period covers 2015 to 2023. The research process involves determining the impact of shock transmission using a quantile regression approach. The results show that most of the evaluated quantile parameters are highly statistically significant, i.e. with more than 99% probability. The estimated quantile parameters have the property of being able to observe the spillover effects of shocks in different states of the economy, such as recession, normal state and expansion. The research results suggest that the spillover of shocks from the Brent oil market is most pronounced in the automotive industry sector, that is, in the companies that are most dependent on oil for energy. The significance of the research is reflected in the lack of existing research that deals with the impact of the most important commodity in the world on the prices of company shares with the application of this methodology, which is also a contribution to science. Finally, the results of this research are very relevant for making investment decisions for economic policy makers, investors and company management.
The role and factors impacting virtual human resource management capacity to build remote teams' effectiveness and retention
Authors: Depoo Lucie , Hermida Aimee
Published: May 2024

The paper investigates the impact of virtual human resource management techniques on the effectiveness of remote teams and employee's retention to the organization. The paper provides relevant and new information on virtual teams given the transformational impact resulting from the COVID pandemic. Data was gathered from 323 managers working with virtual teams formed a base for this study across the globe using an anonymous survey. Data was analysed by two-dimensional statistics. The findings revealed that the implementation of the VHRM has led to high productivity, effectiveness and retention capacity of employees as they learn to adapt to the technological changes. Results demonstrate that adequate effort and resources invested in VHRM, human resource managers can identify and implement work efficient solutions, investing in new technology/tools for virtual teams (48%), improving communications (52%), and offering new upskilling opportunities for employees, that maximize employee output. Based on the results, remote team effectiveness is not directly affected by virtual work and mainly relates to the career possibilities as well as improved communication combined with professional development. Improvement is tied to integration of Artificial Intelligence, which significantly improve efficiency and workflows, awarding performance and supporting growth.
The impact of sales growth on manufacturing companies' profitability in the Republic of Serbia: Panel data analysis
Authors: Nuševa Daniela , Dakić Stojanka , Peštović Kristina , Hladika Mirjana
Published: May 2024

Background: Sales growth is one of the key factors for achieving a target high profitability rate. Sales growth provides more comprehensive use of companies' capacities, thereby allocating fixed costs to higher value of revenue resulting in higher profitability rate. Purpose: The aim of this paper is to examine the impact of sales growth on manufacturing companies' profitability in the Republic of Serbia during 2018-2021. Study design/methodology/approach: The profitability as a dependent variable was measured as return on assets, while the size of the company, current ratio, leverage, sales growth, and inventory ratio were set as independent variables. The research was based on a sample of 200 observations of large and medium size manufacturing companies and panel regression models were used. Findings: The results indicate that there is a positive and significant impact of inventory ratio and sales growth on the return on assets. The profitability of manufacturing enterprises increases with the increase in sales. The results of this paper are expected to be used by the management of manufacturing companies to be more careful to achieve stable business and development. Limitations/future research: Recommendations, limitations, and future research are given in the conclusions.
Understanding and role of gut microbiota on drug response and toxicity
Authors: Seshadri Sriram , Gajjar Devanshi , Joshi Aneri , Bhatia Zeel , Kumar Sunny
Published: May 2024

The gut microbiota affects human health profoundly, and evidence is mounting that it can cause, worsen, or resolve illnesses. Particularly in drug-induced toxicity, its role in diverse toxicological reactions has garnered attention recently. Drugs may interact directly or indirectly, through the gut flora, whether or not they are taken orally, changing the toxicity. Current research focuses mainly on the one-way effect of xenobiotics on the makeup and activities of gut microbes, which leads to altered homeostasis. However, there are two-way interactions between the gut microbiota and xenobiotics, and it is important to consider how the gut microbiota affects xenobiotics, particularly medications. Therefore, we emphasise the microbiome, microbial metabolites, and microbial enzymes in this review to emphasise how the gut microbiota affects medication toxicity. To aid in the identification of micro-biologic targets and processes linked to drug toxicity, we establish connections between medications, the microbiome, microbial enzymes or metabolites, drug metabolites, and host toxicological reactions. In addition, a summary and discussion of contemporary mainstream approaches to control medication toxicity by microbiota targeting are provided.
REPRESENTASI PRIMORDIALISME DALAM FILM DOKUMENTER “SEDEKAH KA BUMI” KARYA WATCHDOC
Authors: Fadhilah Yowana
Published: May 2024

Indonesia is a country with a multicultural society, which has led to the emergence of various customs or belief systems, traditions, and different social structures. The documentary film "Sedekah Ka Bumi" produced by Rendi Dwi Julianto and published by Watchdoc provides information related to one of the Sundanese customs. The purpose of this research is to analyze the representation of primordialism contained in several scenes in the documentary film "Sedekah Ka Bumi" by Watchdoc and also focuses on the customs of the Urug Traditional Village community, Bogor Regency. The representation of primordialism in this film is analyzed through Ferdinand De Saussure's semiotic theory which focuses on Signs, Markers and Signifiers. This research uses qualitative research methods. The results of this study show that the movie "Sedekah Ka Bumi" succeeded in portraying well the elements of primordialism in the culture and religion of the people of Kampung Urug. The film depicts how they maintain their traditions, religious identity, and the way they respect nature. The main message is that the traditional values applied remain relevant and respected in the modern world.
Efeito Mpemba e o Ensino de Física: tradução do artigo “Cool?”
Authors: Mpemba Erasto Bartholomeo , Osborne Denis Gordon , Luís Miranda de Barcellos Coelho André
Published: May 2024

Este é um trabalho de tradução do artigo original em inglês intitulado “Cool”, de 1969, que descreveu pela primeira vez o que viria ser conhecido como Efeito Mpemba.
Viva a ciência brasileira! Beatriz Alvarenga e Cesar Lattes: a física e o seu ensino
Authors: Alcantara Marlon Cesar de , Menezes Paulo Henrique Dias
Published: May 2024

Neste editorial, a revista A Física na Escola (FnE) presta sua homenagem aos centenários de Beatriz Alvarenga (1923-2023) e Cesar Lattes (1924-2005). Duas pessoas, cientistas, brasileiras, referências na ciência e no ensino de física do Brasil e do mundo. Apresentamos também uma análise das publicações da FnE no ano de 2023, na qual exaltamos outras pessoas, que também trabalham, muitas vezes de forma anônima, para produzir conhecimento e aumentar a credibilidade da ciência brasileira. Este editorial é um convite para lembrarmos e celebrarmos a importância da diversidade de perspectivas no avanço da ciência. Viva a ciência brasileira!