bluuebunny/crossref_metadata_2025 huggingface dataset:
Challenges of an Online Pedagogy as a Method for TVET Practical Skills Training Delivery and Assessment
Authors: Mutebi Ronald , Kerre Bonaventure W. , Mubichakani Joseph
Published: August 2023

Natural catastrophes and pandemics have disrupted teaching and learning in unexpected ways, forcing educators to carefully contemplate a future in which the majority of training delivery and assessment may have to be online. However, before committing to this pedagogical shift, there is a need to establish, rank in terms of prevalence and thus address related challenges. This paper aims to establish and rank the challenges of online pedagogy as a method for TVET practical skills training delivery and assessment in the context of trainees, instructors, and assessors. A survey method was used to gather participants’ responses using an open-ended post-test questionnaire from a total of sixty-nine (69) trainees, twenty (20) instructors and eight (8) assessors after they had undergone an online training delivery and assessment of practical skills. The collected responses were first processed into operational data that was then clustered into twelve categories of closely related meanings. The clustered data was then statistically (descriptive) illustrated and then graphically presented in terms of the ranked average percentage of participants mentioning the category of challenges. The findings of the survey showed that lack of ICT equipment; poor or no internet connectivity; lack of feedback and realtime interaction; poor course/training design; and electricity outages ranked as the top challenges of an online pedagogy as a method for TVET practical skills training delivery and assessment. The paper recommends that governments, donor agencies and TVET providers should invest in the infrastructure and enablers of online training and assessment
PEMILIHAN FINTECH PAYMENT QRCODE UNTUK PELANGGAN MENGGUNAKAN TOPSIS
Authors: Rofiah Syahbaniar , Setiyadi Didik , Retnoningsih Endang , Sandradewi Kumaratih
Published: August 2023

Payment is inseparable from technology so it is fast in making transactions in real time. Payment is the most important stage in sales. Sales success can be obtained from the service process, both from the process of entering sales transactions to payment transactions. Problems that occur in transactions using the QRCode fintech payment are, it takes too long to read the QRCode, an error occurs when reading the QRCode, has made a payment but it is not detected. The aim of the research is to help service providers fix deficiencies that occur and help customers choose a QRCode fintech that is safe and fast to use. This research seeks QRCode fintech payment recommendations for customers using the Technique For Order Preference by Similarity of Ideal Solution (TOPSIS) with 6 alternatives, namely Sakuku, Link Aja, Gopay, Dana, Shopeepay and OVO. Then the 6 criteria consist of: C1 = real time, C2 = user friendly, C3 = payment, C4 = security, C5 = feature diversity, and C6 = merchant. The results obtained by Gopay obtained the highest score of the other 6 alternatives, namely 0.9208, which was chosen as the best QRCode fintech payment recommendation.
Diffusion of innovation, internet access, and adoption barriers for precision livestock farming among beef producers
Authors: Greig Jamie , Cavasos Kevin , Boyer Christopher , Schexnayder Susan
Published: August 2023

This study examined the relationship between internet access type and perceptions of Precision Livestock Farming (PLF) Technologies among beef producers in a specific state. Using data collected from an internet-based survey of beef producers (n = 137), this study conducted an exploratory factor analysis to construct variables corresponding to Diffusion of Innovation (DOI) attributes that influence innovation adoption. Findings indicate producers with cable, cellular, and broadband internet access had more favorable perceptions of PLF technologies in terms of barriers to adoption, while those with no internet access or satellite connections reported higher perceived complexity with the use of PLF technologies. Trialability and observability varied across internet types, suggesting hands-on experience and practical demonstrations might be more impactful for certain groups. Beef producers with satellite internet connections were more likely to perceive the need to trial PLF technologies before adoption. This study highlights the importance of internet access in rural areas and its potential impact on the adoption of PLF technologies, offering valuable insights for industry stakeholders and policymakers to promote the adoption of PLF technologies.
Predictores del desempeño académico mediante el uso del chatgpt en estudiantes universitarios
Authors: Gutiérrez Aguilar Olger , Delgado-Delgado Fredy , Meza-Málaga Joan , Turpo-Gebera Osbaldo
Published: August 2023

La importancia que ha adquirido el ChatGPT en el mundo académico universitario en la actualidad es muy trascendente. El estudio propone validar algunas de las variables predictoras, como la eficiencia en la adquisición de información, creatividad, competencia en la escritura, competencia lingüística, rendimiento académico y satisfacción con el propósito de generar instrumentos para la investigación con atributos de fiabilidad y validez. El estudio se realizó en Perú, con una muestra de 400 estudiantes universitarios de ambos sexos. Se utilizaron pruebas de análisis factorial exploratorio y confirmatorio. Para este estudio, se utilizaron análisis factoriales exploratorios y confirmatorios. De este modo, futuras investigaciones permitirán explorar y comprender plenamente la utilidad del ChatGPT en diversos contextos y su impacto en la educación superior.
Formative Research and Research Competencies in Foreign Language Students in Higher Education
Authors: Laura-De La Cruz Kevin Mario , Pérez Yufra Domingo Nicolás , Mendoza-Gómez Cecilia Rosario del Pilar , Mendoza-Del Valle Luz Anabella
Published: August 2023

The purpose of this study was to ascertain the degree of correlation between formative research and the attainment of research competencies by students majoring in Foreign Language at a Peruvian public university. Using a non-probabilistic sampling method, 59 colleague students were selected for the sample. The design of the study was non-experimental and transactional in nature. The correlation coefficient between the variables was calculated to be 0.705, indicating that the relationship is positive and has a strong positive correlation. Consequently, there is a significant relationship between the variables of the study.
PECULIARITIES OF CADET TRAINING METHODS IN MILITARY TOPOGRAPHY AT DEPARTMENTAL INSTITUTES OF THE PENAL AND CORRECTIONAL SYSTEM
Authors: Кашибадзе А.Г. , Кадралеева Ж.А.
Published: August 2023

В статье рассматриваются методы обучения, которые помогают достичь определенных задач учебного процесса, приводится их классификация. В частности, говорится о способах, необходимых для достижения главных целей военной топографии, о ее значимости для подготовки будущих сотрудников уголовно-исполнительной системы Российской Федерации. В процессе данного исследования выявлены проблемные аспекты, решение которых будет способствовать эффективному освоению курса «Военная топография». В частности, выделяются проблемынезаинтересованности современного поколения в данной дисциплине, следствием чего является необходимость постоянно требовать концентрации внимания на семинарах и практических занятиях. Также отмечено влияние информационно-коммуникационных технологий на отношение обучающихся к данной дисциплине. Отмечаются особенности обучения курсантов вузов ФСИН России, связанные с несением службы. В связи с этим авторы предлагают выстраивать процесс обучения путем подбора определенных методов и выбора формы организации обучения таким образом, чтобы он соответствовал потребностям современного общества, способствовал заинтересованности курсантов, их пониманию важности изучаемой дисциплины. Приводятся конкретные примеры возможного построения методики для освоения курса по военной топографии.

The article discusses teaching methods that help to achieve certain objectives of the educational process, provides their classification. In particular, it talks about the methods necessary to achieve the main goals of military topography, about its importance for the training of future employees of the penal system of the Russian Federation. In the course of this study, problematic aspects have been identified that should be solved in order to achieve the goals set during the development of the course "Military Topography". Namely, the problems of disinterest of the modern generation in the discipline are highlighted, as a result of which there is a need to constantly require them to maintain their concentration in seminars and practical classes. The influence of development in the field of information and communication technologies on the attitude of students to this discipline is also noted. At the same time, the service of cadets of the Federal Penitentiary Service of the Russian Federation simultaneously with the learning process is taken into account. In this regard, the authors propose to build the methodology in such a way that it will ensure the interest of cadets, an understanding of the importance of the discipline being studied, meet the needs of modern society, by selecting certain teaching methods and choosing the form of organization of the educational process. Concrete examples of the possible construction of a methodology for mastering a course on military topography are given.
THE POSSIBILITY OF LEGAL REGULATION OF THE PROCEDURE FOR THE SEIZURE AND STORAGE OF DIGITAL RIGHTS AS PROPERTY USED IN CRIMINAL ACTIVITY
Authors: Коновальчук М.В. , Письмарова М.А.
Published: August 2023

В статье рассмотрены проблемные вопросы, касающиеся возможности правовой регламентации порядка изъятия и хранения цифровых прав как имущества, используемого в преступной деятельности. Особое внимание уделено классификации цифровых прав, а также их свойствам, что и обусловило характер этого исследования как комплексного, на стыке гражданского, уголовного, уголовно-процессуального и уголовно-исполнительного права. В связи с заявленным положением авторами избрана соответствующая методология данной работы, в которой в первую очередь используется сравнительно-правовой метод исследования и анализ. Сравнительно-правовой метод исследования необходим для рассмотрения цифровизации и цифровых прав как в целом, так и касательно лиц, находящихся в следственных изоляторах. Анализ позволяет путем разделения предмета исследования на части (рассмотрение свойств цифровых прав) с последующей характеристикой каждой из этих частей, что впоследствии дает более полное представление о порядке их изъятия и хранения. Практическая значимость работы заключается в возможности корректировки уголовного и уголовно-исполнительного законодательства с учетом норм гражданского права, закрепляющего цифровые права. Авторами рассматривается возможность правовой регламентации порядка изъятия и хранения цифровых прав как имущества, используемого в преступной деятельности.

The article deals with problematic issues concerning the possibility of legal regulation of the procedure for the seizure and storage of digital rights as property used in criminal activity. Special attention is paid to the classification of digital rights, as well as their properties, which determined the nature of this study as a complex, at the junction of civil, criminal, criminal procedure and penal enforcement law. In connection with the stated position, the authors have chosen the appropriate methodology of this work, which primarily uses the comparative legal method of research and analysis. The comparative legal research method is necessary to consider digitalization and digital rights both in general and in relation to persons in pre-trial detention facilities. The analysis allows by dividing the subject of the study into parts (consideration of the properties of digital rights) with the subsequent characterization of each of these parts, which subsequently gives a more complete idea of the order of their withdrawal and storage. The practical significance of the work lies in the possibility of adjusting the criminal and penal enforcement legislation, taking into account the norms of civil law that enshrines digital rights. The authors consider the possibility of legal regulation of the procedure for the seizure and storage of digital rights as property used in criminal activity.
Determination of the Radii of Coated and Uncoated Silicon AFM Sharp Tips using Height Calibration Standard Grating and Nonlinear Regression Function
Authors: Boonpuek Perawat , Felts Jonathan Robert
Published: August 2023

AFM sharp tips have been used to characterize nanostructures and quantify the mechanical properties of the materials in several areas of research. The analytical results can show unpredicted errors if we do not know the exact values of the AFM tip radius. There are many techniques of in-situ measurements for determining the actual AFM tip radius but limited to uncoated tips. This paper presents an alternative and simple method to determine the radii of coated tips and the uncoated tip. The Pt-coated, Cr-Au coated, and Si uncoated tips were used to scan on the calibration standard grating in AFM contact mode with sub-nano loading to get the curved scan profile of the edge corner of the grating structure. The data points of the curved profile of each tip were fitted with the nonlinear regression function to estimate the curvature radius of the tip. The results show that the estimated radius of the coated tips is in the range of nominal values provided by the tip manufacturer while the estimated radius of the Si uncoated tip is bigger than the nominal radius due to tip blunting during the scan. However, this method yields an accurate estimate of the tip radius with the low value of root mean squared error from curve fitting results.
MOURNING, MELANCHOLIA, DAN TRAUMA DALAM KARNAK KAFE KARYA NAGUIB MAHFOUZ: TINJAUAN PSIKOANALITIK SASTRA
Authors: Oktarina Dwi , Zuhdi M. Luthfi
Published: August 2023

Naguib Mahfouz adalah seorang sastrawan penting dari Mesir yang meraih hadiah Nobel Sastra pada tahun 1988. Karya-karya Mahfouz memusatkan perhatian pada kisah cinta, etika, tanggung jawab moral, dan krisis eksistensialime yang menjadi satu ciri perubahan budaya khususnya yang terjadi di Mesir, baik secara internal atau eksternal. Gambaran mengenai kondisi traumatis akibat ketidakpastian kondisi politik dituangkan Mahfouz dalam novel berjudul Karnak Kafe atau The Karnak. Novel ini menggambarkan kondisi masyarakat Mesir pasca terjadinya Perang Enam Hari di Juni 1967. Kajian ini berupaya membongkar aspek trauma yang dialami oleh para tokoh dalam novel Karnak Kafe karya Naguib Mahfouz. Untuk mengkaji hal tersebut, digunakan gagasan mourning dan melancholia ala Freud dan konsep trauma yang digagas oleh Caruth. Mourning dan melancholia ala Freud berkaitan erat dengan ekspresi kesedihan. Kesedihan itu dapat menimbulkan luka dan trauma mendalam seperti yang disampaikan oleh Caruth. Penelitian ini menggunakan pendekatan deskriptif interpretatif psikoanalitik sastra dengan metode close reading. Sumber data yang digunakan adalah unsur kutipan teks dalam novel yang memuat tuturan atau gagasan utama para tokoh terkait mourning, melancholia, atau trauma yang dirasakan. Hasil penelitian menunjukkan bahwa pergulatan para tokoh utama dalam novel ini berkutat dalam pengalaman-pengalaman kejiwaan yang dibentuk berdasarkan realitas kondisi sosial masyarakat yang terjadi di Mesir pada era 1960-an. Akibat perasaan trauma, mereka kehilangan identitas, harga diri, martabat, bahkan cinta dalam dirinya masing-masing. Status kehilangan yang disadari dan tidak disadari ini menjadi satu batasan kabur dan menunjukkan kehampaan atau bahkan kekosongan ego dalam diri mereka.
Eksistensi Perlindungan Hak Ulayat Masyarakat Hukum Adat Bali di Era Globalisasi
Authors: Tanti Herawati  , Danish Ferdie Therik  , Faruqy Nailufar  , Simona Bustani
Published: August 2023

Keberadaan masyarakat adat di Indonesia diakui secara tegas dalam konstitusi Negara yaitu Undang-Undang Dasar 1945, salah satu ciri khas masyarakat adat adalah adanya hak ulayat masyarakat adat. Masyarakat adat di Bali memiliki karakteristik budaya yang khas dibandingkan daerah-daerah lainnya di Indonesia demikian juga dengan kedudukan hak ulayat di dalam kehidupan masyarakat adat Bali. Masyarakat adat Bali tinggal dalam kelompok-kelompok adat yang disebut dengan desa adat Pakraman, Desa Pakraman memiliki kewenangan menguasai dan mengelola tanah-tanah ulayat yang disebut dengan Tanah Druwe sebagai harta kekayaan Desa Pakraman. Sudah cukup banyak peraturan perundang-undangan telah diterbitkan sebagai bentuk pengakuan terhadap masyarakat adat dan tanah ulayat, tetapi tidak banyak peraturan yang melindungi kepemilikan masyarakat adat terhadap tanah ulayat. Satu-satunya bentuk perlindungan hukum terhadap hak atas tanah adalah dengan pendaftaran (sertifikasi) tanah, sebelum tahun 2017 Desa Pakraman tidak dapat mendaftarkan seluruh Tanah Druwe karena Desa Pakraman belum diakui sebagai subjek hukum yang dapat memiliki hak atas tanah. Setelah terbitnya Keputusan Menteri ATR/Kepala BPN Nomor 276/KEP-19.2/X/2017 maka Desa Pakraman telah sah menjadi subjek hukum hak kepemilikan bersama atas tanah dan dapat mendaftarkan seluruh tanah-tanah Druwe untuk disertifikatkan, dengan terbitnya Keputusan Menteri ATR/Kepala BPN maka Negara telah melindungi masyarakat hukum adat Bali terhadap hak-hak atas tanah ulayatnya.
A Study on Adjustable Height Stand for Temperature Scanner
Authors: Mohammad Shahrul Nizam Amin Nuddin  , Norazlianie Sazali  , Ahmad Shahir Jamaludin  , Kumaran Kadirgama  , Devarajan Ramasamy  , Wan Sharuzi Wan Harun
Published: August 2023

This research project aimed to transform a common temperature scanner stand into a user-friendly adjustable stand holder temperature scanner. The temperature scanner automatically adjusts its height according to the user's height, reducing the risk of contact infection by using an ultrasonic sensor to detect the user in front of the scanner. The experiment involved measuring the time taken for the thermometer to move from the starting position to the maximum height of different individuals with varying heights. A frame capture application on a smartphone was used to record the motion and time, capturing data at a rate of 33 frames per second for accuracy. The tests were conducted using a constant motor speed of 100 revolutions per minute. The results showed that the duration of waiting time for the adjustable stand holder temperature scanner was valid for individuals with heights ranging from 100 cm to 180 cm. The constructed adjustable stand successfully served its purpose and demonstrated functionality and reliability in real-life testing. To improve the accuracy and expand the capabilities of the adjustable stand holder temperature scanner, future work are needed such as utilizing smart system programs to cater to user preferences, implementing material modifications to reduce vibrations, and introducing additional features to indicate a person's height and weight.
Electromyography Indices of Handgrip Force with Swinging Motion
Authors: Wan Hisarudin Wan Abdullah  , Wan Mohd Bukhari Wan Daud  , Mohammad Osman Tokhi  , Rubita Sudirman  , Mohd Juzaila Abd. Latif  , Norafizah Abas  , Nur Syuhada Abu
Published: August 2023

Electromyography (EMG) is a powerful tool for studying muscle activity, but there is limited research on EMG signals in the muscles of the human forearm, which poses challenges for prosthetic hand development. This study utilized the maximum voluntary contraction (MVC) normalization method to analyze the flexor carpi radialis muscle during handgrip and swinging motions. The MVC indices revealed a significant proportion of high-amplitude MVC results. We conducted three statistical analyses to validate the indices. One-way ANOVA showed significant differences in mean values among the seven subjects during the percent MVC test. RMS study demonstrated a linear correlation between muscle contraction and movement. Boxplot analysis revealed variations within the interquartile range and median values across the entire MVC range. To achieve these results, we employed an eighth-order Gaussian function for curve fitting and exponential weighted moving average. The median interquartile range showed high discrepancies, while the differences between MVC increments were minimal, providing reliable indices for swinging motion. This suggests that the fat layer thickness may influence the muscle signal's frequency characteristics. In summary, our study highlights the untapped potential of EMG signals in the forearm muscles for prosthetic hand development. By employing MVC normalization and conducting rigorous statistical analyses, we uncovered significant findings that contribute to advancements in this field. Our insights provide hope and inspiration for researchers and practitioners seeking to enhance prosthetic technology.
Using Analytical Hierarchy Process for Double Auction to Optimize Financial Performance of Private Higher Education Institutions
Authors: Satria Abadi  , Muhamad Hariz Muhamad Adnan  , Sri Redjeki  , Citrawati Jatiningrum
Published: August 2023

Internal factors and external factors are used to measure the performance of higher education institutions. Internal factors include those whose criteria come from within the organization, while external factors are those whose criteria come from outside the organization. Of these two factors, measurement criteria that can help in decision-making about the development and expansion of higher education competence, including financial criteria, are needed. This study examines the optimization of the financial performance of private higher education institutions by applying the Analytic Hierarchy Process method and a proposed double auction framework. Financial criteria are critical to supporting the development and enhancing the competency of higher education institutions. The Analytical Hierarchy Process is used to prioritize 19 sub-criteria, with the Teaching Process Operational Cost Development sub-criterion scoring highest for each operational criterion. The double auction framework is proposed to facilitate decision-making for the development and further competence of private higher education institutions. This paper represents an important contribution to the evaluation of the financial performance of private higher education institutions by using a novel approach that incorporates a double auction framework.
Comparison of Machine Learning Models in Forecasting Reservoir Water Level
Authors: Mohammad Amimul Ihsan Aquil  , Wan Hussain Wan Ishak
Published: August 2023

Reservoirs are important for flood mitigation and water supply storage. The reservoir water release decision, however, must be intelligently modeled due to the unknown volume of input. The model can help reservoir operators make early water release decisions during heavy rainstorms and hold water during drought seasons. One of the promising techniques has been a machine learning-based forecasting model. Therefore, in this study, several machine learning models were identified and compared in terms of performance using Mean Absolute Error (MAE), R-Square, and Root Mean Square (RMSE). The findings show that VARMAX has the highest R-squared value. This identifies the data set as a time series having a seasonal component. ARIMA, on the other hand, is unable to produce adequate results when a seasonal component is included. Both models' MAE and RMSE values accurately reflect the above-mentioned argument.
Application System Development of Accident Prevention and Safety Assistance using IoT Application
Authors: Muhammad Naufal Mansor  , Mohd Aminudin Jamlos  , Wan Azani Mustafa  , Muhammad Adib Rahmat  , Syahrul Affandi Saidi  , Noor Anida Abu Talib  , Mohd Zamri Hasan
Published: August 2023

The number of road accidents in Malaysia shows a steady increment from 2010 to 2019, reported by the Ministry of Transport Malaysia. This project aims to develop a system to prevent an accident by detecting aggressive driving. If an accident occurred, this system would send an alert for an immediate response, which is crucial to reduce the fatality rate. An accelerometer is utilized to detect aggressive driving and accident events. The method to detect aggressive driving is by determining an abrupt change in acceleration. For accident detection, the vehicle tilt angle and acceleration are monitored. An ESP32 SIM800L microcontroller processes the inputs and alert a web-based cloud service and a set phone number by Short Message Service (SMS). The microcontroller is used due to the embedded Global System for Mobile Communications (GSM) and other wireless communication modules. The small form factor gives an advantage in terms of mounting location flexibility. The alert contains the type of event, time, and location. This report contains the development of the proposed system, which includes the simulation for the system circuit and motion simulation. Accident detection, falls, SMS alerts and online alerts are consistently successful, while aggressive driving detection is inconsistent. Live tracking does not directly work during these detections. In conclusion, this project successfully detects accidents and sends alerts via SMS and internet using a Subscriber Identity Module (SIM) card.
Analysis of Convolutional Neural Networks for Facial Expression Recognition on GPU, TPU and CPU
Authors: Anbananthan Pillai Munanday  , Norazlianie Sazali  , Wan Sharuzi Wan Harun  , Kumaran Kadirgama  , Ahmad Shahir Jamaludin
Published: August 2023

In light of the increasing computational capacity provided by Central Processing Units (CPUs), Graphics Processing Units (GPUs), and Tensor Processing Units (TPUs), all of these were designed to speed up deep learning workloads, and the fact that this iteration of human-computer interaction is becoming more natural and social, it is clear that the field of human-computer interaction is poised for significant growth. The scientific community has found emotion recognition to be of tremendous interest and significance. Despite these advances, it is still desired that research into computational methods for identifying and recognizing emotions at the same ease as humans. This study uses Convolutional Neural Networks (CNN) for human emotion identification from facial expressions to delve deeper into this topic. The results demonstrated that training an Artificial Neural Networks (ANN) on GPUs might cut computational time by as much as 90% while accuracy could be raised up to 65%.
Automated Staging and Grading for Retinopathy of Prematurity on Indian Database
Authors: KADGE S S , Nalbalwar S.L. , Nandgaokar A B , Shah Parag , V Narendran
Published: August 2023

Retinopathy of prematurity (ROP) is a disorder of the retina in neonates. If ROP is not treated at early stage, neonates’ vision is affected, leading to blindness. It is necessary to diagnose and treat ROP at earliest. Several ROP assessment techniques based on Image analysis have been introduced in recent years. These studies identify only normal, abnormal and plus disease. This research article explores the identification of distinct ROP stages along with normal and abnormal detection. Detecting the stages will help to expedite the treatment and prevent vision loss. The proposed framework consists of feature extraction using Scale Invariant Feature Transform (SIFT) and Pyramid Histogram of Words (PHOW) techniques. Three efficient supervised machine learning algorithms, namely random forest (RF), support vector machine (SVM) and extreme boosting gradient (XGBoost), are used to classify different stages of ROP. A data set captured by RetCam 3 is used to evaluate the model. Based on rigorous evaluation, the accuracy of different ROP stages is 93.68%, 83.33%, 85.71%, 55.55% and 100% for normal, stage 1, 2, 3 and 4, respectively.
Ứng dụng tính linh động của các vạt da cơ có cuống trong tạo hình khuyết hổng khoang miệng sau phẫu thuật ung thư
Authors: Nguyễn Khánh
Published: August 2023

TÓM TẮT

Mục tiêu: Đánh giá kết quả ứng dụng các vạt da cơ có cuống trong tạo hình khuyết hổng khoang miệng sau phẫu thuật ung thư biểu mô khoang miệng.

Đối tượng, phương pháp: Nghiên cứu mô tả tiến cứu, có can thiệp lâm sàng trên 36 bệnh nhân ung thư biểu mô vảy khoang miệng được phẫu thuật tại Bệnh viện Trung ương Huế từ tháng 03 năm 2020 đến tháng 5 năm 2023

Kết quả: Đã sử dụng 36 vạt da cơ có cuống trong tạo hình khuyết hổng sau phẫu thuật triệt căn ung thư biểu mô khoang miệng. Trong đó Vạt cân thái dương sử dụng cho 3 trường hợp (8,3%). Vạt cân cơ thái dương sử dụng cho 6 trường hợp (16,7%). Vạt da cân cơ dưới hàm sử dụng cho 15 trường hợp (41,7%). Vạt da cân cơ ngực lớn sử dụng cho 12 trường hợp (33,3%). Kết quả nghiên cứu với 83,3% vạt sống tốt, không có biến chứng nặng sau mổ, phục hồi chức năng tốt và tỷ lệ tái phát thấp sau mổ.

Kết luận: Sử dụng các vạt da cơ có cuống linh hoạt là lựa chọn phù hợp cho các tổn khuyết trung bình và lớn sau phẫu thuật cùng với tái tạo cơ quan quan trọng nhằm bảo tồn chức năng sống và hình thái của vùng khoang miệng cho bệnh nhân ung thư. ABSTRACT

APPLICATION OF VERSATILITY OF PEDICLED FLAPS IN ORAL CAVITY DEFECTS RECONSTRUCTION AFTER CANCER SURGERY

Objectives: To evaluate the results of application of pedicled flaps in reconstruction of oral cavity defects after surgery for oral carcinoma.

Methods: A prospective, clinical interventional descriptive study on 36 oral squamous cell carcinoma patients operated at Hue Central Hospital from March 2020 to May 2023.

Results: 36 pedicled musculocutaneous flaps were used in defect reconstruction after surgery of oral cancer. Four types of flaps were use, in which the temporalis fascia flap was used for 3 cases (8.3%), the temporalis myofascial flap was used for 6 cases (16.7%), the submandibular fascia flap was used for 15 cases (41.7%) and the pectoralis major myocutaneous one was used for 12 cases (33.3%). The results of the study showed that 83.3% of flaps were good. There were no serious complications after surgery. Good function recovery and low recurrence rate were recorded after surgery.

Conclusion: Using flexible pedicled musculocutaneous flaps is a suitable choice for moderate and large defects after surgery along with major organ reconstruction to preserve vital function and morphology of the oral cavity for cancer patients.
THE RECEPTIVITY OF YOUNGER GENERATION ROMANIAN EMPLOYEES TO NEW TECHNOLOGY IMPLEMENTATION AND ITS IMPACT ON THE BALANCE BETWEEN WORK AND LIFE
Authors: Trifan Vanina Adoriana , Pantea Mioara Florina
Published: August 2023

In the current era, technological advancement has completely changed many facets of our daily lives, such as the workplace, where modern-day companies are compelled to take proactive actions. Employees face the same challenges by shifting their practices from conventional to more innovative ones. This study explores Generation Z and Millennials‘ receptivity to technological advancement and how it impacts their personal and professional lives. By exploring four personalitybased characteristics – optimism, innovation, discomfort, and insecurity – this study develops clear pathways from the perspective of Romanian younger employees. The proposed research hypotheses were tested with a sample of 399 employees, and quantitative data analysis was carried out using partial least squares structural equation modelling. Our findings are expected to provide employers, human resource managers, recruiters, and policymakers with new insights that enable them to develop methods, strategies, policies, and measures tailored to the mentality and behavioural patterns of these specific target groups.
ACCESS, LRG-BEASTS, and MOPSS: Featureless Optical Transmission Spectra of WASP-25b and WASP-124b
Authors: McGruder Chima D. , López-Morales Mercedes , Kirk James , Rackham Benjamin V. , May Erin , Ahrer Eva-Maria , King George W. , Alam Munazza K. , Allen Natalie H. , Ceballos Kevin Ortiz , Espinoza Néstor , Gardner Tyler , Jordán Andrés , Meyer Kelly , Monnier John D. , Osip David J. , Wheatley Peter J.
Published: August 2023

We present new optical transmission spectra for two hot Jupiters: WASP-25b (M = 0.56 M

J
; R = 1.23 R

J
; P = 3.76 days) and WASP-124b (M = 0.58 M

J
; R = 1.34 R

J
; P = 3.37 days), with wavelength coverages of 4200–9100 Å and 4570–9940 Å, respectively. These spectra are from the ESO Faint Object Spectrograph and Camera (v.2) mounted on the New Technology Telescope and Inamori-Magellan Areal Camera & Spectrograph on Magellan Baade. No strong spectral features were found in either spectra, with the data probing 4 and 6 scale heights, respectively. Exoretrievals and PLATON retrievals favor stellar activity for WASP-25b, while the data for WASP-124b did not favor one model over another. For both planets the retrievals found a wide range in the depths where the atmosphere could be optically thick (∼0.4 μ–0.2 bars for WASP-25b and 1.6 μ–32 bars for WASP-124b) and recovered a temperature that is consistent with the planets’ equilibrium temperatures, but with wide uncertainties (up to ±430 K). For WASP-25b, the models also favor stellar spots that are ∼500–3000 K cooler than the surrounding photosphere. The fairly weak constraints on parameters are owing to the relatively low precision of the data, with an average precision of 840 and 1240 ppm per bin for WASP-25b and WASP-124b, respectively. However, some contribution might still be due to an inherent absence of absorption or scattering in the planets’ upper atmospheres, possibly because of aerosols. We attempt to fit the strength of the sodium signals to the aerosol–metallicity trend proposed by McGruder et al., and find WASP-25b and WASP-124b are consistent with the prediction, though their uncertainties are too large to confidently confirm the trend.
The Temporal and Spatial Evolution of Magnetohydrodynamic Wave Modes in Sunspots
Authors: Albidah A. B. , Fedun V. , Aldhafeeri A. A. , Ballai I. , Jess D. B. , Brevis W. , Higham J. , Stangalini M. , Silva S. S. A. , MacBride C. D. , Verth G.
Published: August 2023

Through their lifetime, sunspots undergo a change in their area and shape and, as they decay, they fragment into smaller structures. Here, for the first time we analyze the spatial structure of the magnetohydrodynamic (MHD) slow-body and fast-surface modes in the observed umbrae as their cross-sectional shape changes. The proper orthogonal decomposition (POD) and dynamic mode decomposition (DMD) techniques were used to analyze 3 and 6 hr Solar Dynamics Observatory/Helioseismic and Magnetic Imager time series of Doppler velocities at the photospheric level of approximately circular and elliptically shaped sunspots. Each time series was divided into equal time intervals to evidence the change in the shape of the sunspots. To identify the physical wave modes, the POD/DMD modes were cross-correlated with a slow-body mode model using the exact shape of the umbra, whereas the shape obtained by applying a threshold level of the mean intensity for every time interval. Our results show that the spatial structure of MHD modes are affected, even by apparently small changes in the umbral shape, especially in the case of the higher-order modes. For the data sets used in our study, the optimal time intervals to consider the influence of the change in the shape on the observed MHD modes is 37–60 minutes. The choice of these intervals is crucial to properly quantify the energy contribution of each wave mode to the power spectrum.
Electron Acceleration and Heating during Magnetic Reconnection in the Earth's Quasi-parallel Bow Shock
Authors: Bessho N. , Chen L.-J. , Hesse M. , Ng J. , Wilson L. B. , Stawarz J. E.
Published: August 2023

We perform a 2.5-dimensional particle-in-cell simulation of a quasi-parallel shock, using parameters for the Earth’s bow shock, to examine electron acceleration and heating due to magnetic reconnection. The shock transition region evolves from the ion-coupled reconnection dominant stage to the electron-only reconnection dominant stage, as time elapses. The electron temperature enhances locally in each reconnection site, and ion-scale magnetic islands generated by ion-coupled reconnection show the most significant enhancement of the electron temperature. The electron energy spectrum shows a power law, with a power-law index around 6. We perform electron trajectory tracing to understand how they are energized. Some electrons interact with multiple electron-only reconnection sties, and Fermi acceleration occurs during multiple reflections. Electrons trapped in ion-scale magnetic islands can be accelerated in another mechanism. Islands move in the shock transition region, and electrons can obtain larger energy from the in-plane electric field than the electric potential in those islands. These newly found energization mechanisms in magnetic islands in the shock can accelerate electrons to energies larger than the achievable energies by the conventional energization due to the parallel electric field and shock drift acceleration. This study based on the selected particle analysis indicates that the maximum energy in the nonthermal electrons is achieved through acceleration in ion-scale islands, and electron-only reconnection accounts for no more than half of the maximum energy, as the lifetime of sub-ion-scale islands produced by electron-only reconnection is several times shorter than that of ion-scale islands.
Metallicity Dependence of Molecular Cloud Hierarchical Structure at Early Evolutionary Stages
Authors: Kobayashi Masato I. N. , Iwasaki Kazunari , Tomida Kengo , Inoue Tsuyoshi , Omukai Kazuyuki , Tokuda Kazuki
Published: August 2023

The formation of molecular clouds out of H i gas is the first step toward star formation. Its metallicity dependence plays a key role in determining star formation throughout cosmic history. Previous theoretical studies with detailed chemical networks calculate thermal equilibrium states and/or thermal evolution under one-zone collapsing background. The molecular cloud formation in reality, however, involves supersonic flows, and thus resolving the cloud internal turbulence/density structure in three dimensions is still essential. We here perform magnetohydrodynamics simulations of 20 km s−1 converging flows of warm neutral medium (WNM) with 1 μG mean magnetic field in the metallicity range from the solar (1.0 Z
⊙) to 0.2 Z
⊙ environment. The cold neutral medium (CNM) clumps form faster with higher metallicity due to more efficient cooling. Meanwhile, their mass functions commonly follow

dn

/

dm
∝

m

−
1.7

at three cooling times regardless of the metallicity. Their total turbulence power also commonly shows the Kolmogorov spectrum with its 80% in the solenoidal mode, while the CNM volume alone indicates the transition toward Larson’s law. These similarities measured at the same time in units of the cooling time suggest that the molecular cloud formation directly from the WNM alone requires a longer physical time in a lower-metallicity environment in the 1.0–0.2 Z
⊙ range. To explain the rapid formation of molecular clouds and subsequent massive star formation possibly within ≲10 Myr as observed in the Large/Small Magellanic Clouds, the H i gas already contains CNM volume instead of pure WNM.
X-Ray Cavity Dynamics and Their Role in the Gas Precipitation in Planck Sunyaev–Zeldovich (SZ) Selected Clusters
Authors: Olivares V. , Su Y. , Forman W. , Gaspari M. , Andrade-Santos F. , Salome P. , Nulsen P. , Edge A. , Combes F. , Jones C.
Published: August 2023

We study active galactic nucleus (AGN) feedback in nearby (z < 0.35) galaxy clusters from the Planck Sunyaev–Zeldovich sample using Chandra observations. This nearly unbiased mass-selected sample includes both relaxed and disturbed clusters and may reflect the entire AGN feedback cycle. We find that relaxed clusters better follow the one-to-one relation of cavity power versus cooling luminosity, while disturbed clusters display higher cavity power for a given cooling luminosity, likely reflecting a difference in cooling and feedback efficiency. Disturbed clusters are also found to contain asymmetric cavities when compared to relaxed clusters, hinting toward the influence of the intracluster medium (ICM) “weather” on the distribution and morphology of the cavities. Disturbed clusters do not have fewer cavities than relaxed clusters, suggesting that cavities are difficult to disrupt. Thus, multiple cavities are a natural outcome of recurrent AGN outbursts. As in previous studies, we confirm that clusters with short central cooling times, t
cool, and low central entropy values, K
0, contain warm ionized (10,000 K) or cold molecular (<100 K) gas, consistent with ICM cooling and a precipitation/chaotic cold accretion scenario. We analyzed archival Multi-Unit Spectroscopic Explorer observations that are available for 18 clusters. In 11/18 of the cases, the projected optical line emission filaments appear to be located beneath or around the cavity rims, indicating that AGN feedback plays an important role in forming the warm filaments by likely enhancing turbulence or uplift. In the remaining cases (7/18), the clusters either lack cavities or their association of filaments with cavities is vague, suggesting alternative turbulence-driven mechanisms (sloshing/mergers) or physical time delays are involved.
The Single-pulse Observation of PSR B2111+46 with the Five-hundred-meter Aperture Spherical Radio Telescope
Authors: Zhi Q. J. , Bai J. T. , Shang L. H. , Xu X. , Dang S. J. , Li D. , Zhang L. , Wang P. , Xie X. Y. , Zhao R. S. , Dong A. J. , Qiao G. J.
Published: August 2023

We report the observations of periodic nulling in PSR B2111+46 at 1250 MHz with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The nulling fractions (NF) as well as nulling period of this pulsar were calculated. The NF and nulling period are 17% ± 1% and 62.49 ± 0.99 P
1, respectively, and the periodic nulling shows variations in periodicity with time. The durations of each consecutive burst and nulling were investigated, which show that the power-law distribution and the indices are −1.11 ± 0.04 and −2.08 ± 0.23. In the observed frequency band, the width of the profile is narrowed with the increase in frequency, and the degree of polarization has no obvious trend with the increase in frequency. We discovered a weak emission component in front of the leading component of this triple-type profile pulsar that was not observed in other bands and by other telescopes. With the fitting of rotation vector model, we obtained that the angles of the magnetic inclination α and the line of sight ζ are ∼13.°0 and ∼11.°6, respectively. The high-sensitivity observation of FAST improves our understanding of the emission of this pulsar.
Abundance Analysis of Stars at Large Radius in the Sextans Dwarf Spheroidal Galaxy*
Authors: Roederer Ian U. , Pace Andrew B. , Placco Vinicius M. , Caldwell Nelson , Koposov Sergey E. , Mateo Mario , Olszewski Edward W. , Walker Matthew G.
Published: August 2023

We present the stellar parameters and chemical abundances of 30 elements for five stars located at large radii (3.5–10.7 times the half-light radius) in the Sextans dwarf spheroidal galaxy. We selected these stars using proper motions, radial velocities, and metallicities, and we confirm them as metal-poor members of Sextans with −3.34 ≤ [Fe/H] ≤ −2.64 using high-resolution optical spectra collected with the Magellan Inamori Kyocera Echelle spectrograph. Four of the five stars exhibit normal abundances of C (−0.34 ≤ [C/Fe] ≤ + 0.36), mild enhancement of the α elements Mg, Si, Ca, and Ti ([α/Fe] = +0.12 ± 0.03), and unremarkable abundances of Na, Al, K, Sc, V, Cr, Mn, Co, Ni, and Zn. We identify three chemical signatures previously unknown among stars in Sextans. One star exhibits large overabundances ([X/Fe] > +1.2) of C, N, O, Na, Mg, Si, and K, and large deficiencies of heavy elements ([Sr/Fe] = −2.37 ± 0.25, [Ba/Fe] = −1.45 ± 0.20, [Eu/Fe] < + 0.05), establishing it as a member of the class of carbon-enhanced metal-poor stars with no enhancement of neutron-capture elements. Three stars exhibit moderate enhancements of Eu (+0.17 ≤ [Eu/Fe] ≤ + 0.70), and the abundance ratios among 12 neutron-capture elements are indicative of r-process nucleosynthesis. Another star is highly enhanced in Sr relative to heavier elements ([Sr/Ba] = +1.21 ± 0.25). These chemical signatures can all be attributed to massive, low-metallicity stars or their end states. Our results, the first for stars at large radius in Sextans, demonstrate that these stars were formed in chemically inhomogeneous regions, such as those found in ultra-faint dwarf galaxies.
Observing Supernova Neutrino Light Curves with Super-Kamiokande. IV. Development of SPECIAL BLEND: A New Public Analysis Code for Supernova Neutrinos
Authors: Harada Akira , Suwa Yudai , Harada Masayuki , Koshio Yusuke , Mori Masamitsu , Nakanishi Fumi , Nakazato Ken’ichiro , Sumiyoshi Kohsuke , Wendell Roger A.
Published: August 2023

Supernova neutrinos are invaluable signals that offer information about the interior of supernovae. Because a nearby supernova can occur at any time, preparing for future supernova neutrino observation is an urgent task. For the prompt analysis of supernova neutrinos, we have developed a new analysis code, the “Supernova Parameter Estimation Code based on Insight on Analytic Late-time Burst Light curve at Earth Neutrino Detector” (SPECIAL BLEND). This code estimates the parameters of supernovae based on an analytic model of supernova neutrinos from the proto-neutron star cooling phase. For easy availability to the community, this code is public and easily runs in web environments. SPECIAL BLEND can estimate the parameters better than the analysis pipeline we developed in a previous paper. By using SPECIAL BLEND, we can estimate the supernova parameters within 10% precision up to ∼20 and ∼60 kpc (Large Magellanic Cloud contained) with Super-Kamiokande and Hyper-Kamiokande, respectively.
SN 2020bio: A Double-peaked, H-poor Type IIb Supernova with Evidence of Circumstellar Interaction
Authors: Pellegrino C. , Hiramatsu D. , Arcavi I. , Howell D. A. , Bostroem K. A. , Brown P. J. , Burke J. , Elias-Rosa N. , Itagaki K. , Kaneda H. , McCully C. , Modjaz M. , Gonzalez E. Padilla , Pritchard T. A. , Yesmin N.
Published: August 2023

We present photometric and spectroscopic observations of SN 2020bio, a double-peaked Type IIb supernova (SN) discovered within a day of explosion, primarily obtained by Las Cumbres Observatory and Swift. SN 2020bio displays a rapid and long-lasting initial decline throughout the first week of its light curve, similarly to other well-studied Type IIb SNe. This early-time emission is thought to originate from the cooling of the extended outer hydrogen-rich (H-rich) envelope of the progenitor star that is shock heated by the SN explosion. We compare SN 2020bio to a sample of other double-peaked Type IIb SNe in order to investigate its progenitor properties. Analytical model fits to the early-time emission give progenitor radius (≈100–1500 R
⊙) and H-rich envelope mass (≈0.01–0.5 M
⊙) estimates that are consistent with other Type IIb SNe. However, SN 2020bio displays several peculiarities, including (1) weak H spectral features indicating a greater amount of mass loss than other Type IIb progenitors; (2) an underluminous secondary light-curve peak that implies a small amount of synthesized 56Ni (M
Ni ≈0.02 M
⊙); and (3) low-luminosity nebular [O i] and interaction-powered nebular features. These observations are more consistent with a lower-mass progenitor (M
ZAMS ≈ 12 M
⊙) that was stripped of most of its H-rich envelope before exploding. This study adds to the growing diversity in the observed properties of Type IIb SNe and their progenitors.