bluuebunny/crossref_metadata_2025 huggingface dataset:
Fabrication and Characterization of Cellulose Acetat / N-Methyl Pyrollidon Membrane for Microplastics Separation in Water
Authors: Rahmawati Yeni , Nurkhamidah Siti , Rahmah Annisa Alifia , Rifai M. Ayub
Published: July 2024

Indonesia is the fifth ranked country with plastic waste that is not managed properly. Over time, plastic breaks down into microplastics (MPs) less than 5 mm in diameter, which in water can cause damage. One method of removing MPs that is considered efficient is MPs microfiltration using membrane technology. To obtain an adequate membrane in removing MPs particles, it is necessary to modify the membrane both in the material and the membrane manufacturing process itself. So this study aims to study the effect of immersion time in the manufacturing process on the characteristics and performance of microfiltration membranes to remove MPs in water. In this study, the membrane will be made using the phase inversion method with a flat sheet membrane finish. The membrane is made using Cellulose Acetate (CA) polymer with n-Methyl Pyrolidone (NMP) solvent and aquadest as its non-solvent. The selected variable is the membrane immersion time for 10; 17,5; and 25 minutes and operating pressure at membrane performance test 0,3; 0,5; and 0,7 bar. Furthermore, the resulting membrane will be analyzed for its characteristics through porosity and water content analysis, contact angle analysis, and SEM analysis. In addition, membrane performance tests are carried out to determine the ability of membranes when separating microplastics in water. CA/NMP flat sheet membrane fabrication produces white membrane flatsheet. The results of the experiments that have been carried out, obtained CA/NMP (15:85) membrane with a variable immersion time of 25 minutes has the best characteristics and performance. The membrane is white, has a thickness of 126μm, and is hydrophilic. The membrane also has a supporting layer with a finger-shaped pore structure and sponge. In addition, CA/NMP (15:85) membranes have a %microplastic rejection value in water reaching 99%.
Smartphone usage among Bachelor of Medicine and Surgery students at the University of Papua New Guinea: A survey
Authors: Temai L. , Pulsan F. , Vince J. , Yohang G. , Wohiemani J.
Published: July 2024

Introduction: Smartphones and digital technology have been increasingly important in medical education in most countries, but have only recently become widely available in Papua New Guinea. Our study aimed to examine the views and experiences of medical students on smartphone use at the University of Papua New Guinea School of Medicine and Health Sciences.Methodology: A pretested self-administered questionnaire was used to collect information on smartphone use in student learning. Data was entered into Microsoft Excel 2019 and analyzed using SPSS version 22.Results: One hundred and sixty-one (78%) of 206 enrolled medical students responded. All participants owned a smartphone. Seventy-seven percent (124/161) used the available school Wi-fi for internet connectivity, and 98.8 % (n=159) purchased mobile data. Most (72.7%, n=117) of the students spent more than an hour daily on their phone. Smartphones were used to access learning applications and websites, Google, YouTube, online libraries, medical journals, note-taking during seminars and tutorials, and share learning material with colleagues. Seventy-seven (47.8%) spent more than an hour each day accessing reading and learning materials, and 56 (34.8%) spent more than one hour a day on social media activities. The most frequently accessed Medical Journals were the British Medical Journal (27.5%, n=45) and the Papua New Guinea Medical Journal (28.8%, n=47).Conclusion: The study provides insight into smartphone use among medical students at the School of Medicine and Health Sciences. Most students use smartphones for learning, and the results of this study should inform the further integration of digital tools in medical education in Papua New Guinea.
Simulation vs Video-Assisted Learning on Retentivity of Clinical Competency and Knowledge of Basic Airway Devices in Medical Students: A Preliminary Study
Authors: Subramaniam T. , Azizan A. B. B. , Yan L. S. , Sivanendran D. , Wen T. U. , Kirihettige D. R. G.
Published: July 2024

Introduction: Teaching and learning challenges are common in clinical leaning settings and this research was conducted to determine the effectiveness of learning about simple airway devices using video assistance compared with face-to-face simulated learning.Methodology: A randomized single-blinded comparative study was conducted over 2 months, employing OBA (One Best Answer) and DOPS (Direct Observation of Practical Skills) to evaluate knowledge and practical skills of 20 third-year medical students without prior exposure to airway adjuncts. Assessments were conducted immediately, at 2 weeks and at 8 weeks post-exposure to either a video or simulated activity. Learning style was identified using a VARK questionnaire before the study.Results: Mann -Whitney U test showed that during the third DOPS assessment (U = 17.50, p = 0.011), the simulation group performed better than the video-assisted group with no difference in the first and second assessments. No difference was noted in OBA scores. Friedman test, followed by a Wilcoxon signed-rank test, showed a decrease from the first to the third OBA scores within the video group (Z = -2.038, p = 0.042), and no change in the simulation group. Learning styles did not influence performance. No differences in knowledge were noted between the two groups but knowledge decay was identified within the video-assisted group.Conclusion: No difference in knowledge was identified between the two groups. There was knowledge decay within the video-assisted group. Retention of procedural skills was better for the simulation group. The learning styles of students did not affect the outcome. Video-assisted learning can be useful for simple devices for remote learning and enhance blended learning. Further research with a larger sample size would be beneficial.
HIF-1 Transcriptionally Regulates Basal Expression of STING to Maintain Cellular Innate Immunity
Authors: Gao Chao , Xiao Chenglu , Wang Mengdong , Liang Xinxin , Qin Chao , Zhang Hang , Bai Rulan , Zhang Rui , Feng Wenhai , Yang Jinbo , Tang Jun
Published: July 2024

Stimulator of IFN genes (STING) is a critical component of the innate immune system, playing an essential role in defending against DNA virus infections. However, the mechanisms governing basal STING regulation remain poorly understood. In this study, we demonstrate that the basal level of STING is critically maintained by hypoxia-inducible factor 1 (HIF-1)α through transcription. Under normal conditions, HIF-1α binds constitutively to the promoter region of STING, actively promoting its transcription. Knocking down HIF-1α results in a decrease in STING expression in multiple cell lines and zebrafish, which in turn reduces cellular responses to synthetic dsDNAs, including cell signaling and IFN production. Moreover, this decrease in STING levels leads to an increase in cellular susceptibility to DNA viruses HSV-1 and pseudorabies virus. These findings unveil a (to our knowledge) novel role of HIF-1α in maintaining basal STING levels and provide valuable insights into STING-mediated antiviral activities and associated diseases.
Reevaluating the epinephrine myth: A comprehensive review
Authors: Krishnaprabhu Sreeganesh , Das Joe M.
Published: July 2024

The combination of local anesthetic drugs with epinephrine has conventionally been contraindicated in acral regions due to concerns of potential necrosis caused by compromised blood flow. However, this belief has been challenged since 2001, when studies demonstrated the safety and effectiveness of the combination. This review aims to analyze reported cases of acral area necrosis following the use of local anesthesia with epinephrine since 2001. A thorough search was conducted on PubMed and Google Scholar using specific keywords to identify articles reporting acral area necrosis caused using local anesthesia and epinephrine. Our search yielded eight publications describing a total of 13 cases of ischemic events in acral areas. These cases involved finger necrosis (five cases), scrotal skin necrosis (two cases), and eyelid necrosis (six cases), following the injection of a combination of epinephrine and lignocaine. The majority of affected patients were female who underwent surgical intervention and reconstruction. The use of epinephrine in local anesthesia offers significant advantages and is generally safe for acral areas. However, the risk of necrosis cannot be entirely eliminated, particularly in patients with compromised vascular function. Adhering to proper guidelines and selecting suitable patients can help mitigate the risk. Phentolamine serves as a potential rescue agent if vascular compromise occurs. Precautionary measures must be taken when using this combination in high-risk patients.
Association of TPMT and NUDT15 gene polymorphisms with azathioprine-induced leukopenia: A case–control study in Eastern India
Authors: Mitra Sneha , Ghosh Abhijnan , Chatterjee Suparna , Chatterjee Mitali , Sinhamahapatra Pradyot
Published: July 2024

BACKGROUND:

Azathioprine (AZA) is a widely used immunosuppressant drug. Leukopenia is a serious adverse effect of the drug which often necessitates dose reduction or drug withdrawal. Predictors of leukopenia include genetic and nongenetic factors. Genetic polymorphism of AZA-metabolizing enzyme, thiopurine S-methyltransferase (TPMT) is well established. There is inconclusive evidence about the role of Nudix hydrolase (NUDT15) gene polymorphism. This case–control study assessed the association of genetic polymorphisms of NUDT15 and TPMT with leukopenia induced by AZA.

MATERIALS AND METHODS:

Cases were patients on AZA who developed leukopenia (white blood cell count <4000/μl) within 1 year of treatment initiation that necessitated dose reduction or drug withdrawal. Age and gender-matched patients without leukopenia within 1 year of treatment with AZA served as controls. TPMT (3 loci: c238G to C, c460G to A, c719A to G) and NUDT15 (c 415C to T, rs116855232) genotyping were done using TPMT strip assay and polymerase chain reaction–restriction fragment length polymorphism, respectively. Genotype frequencies were noted, and the odds ratio was calculated to determine the association between genotypes and leukopenia.

RESULTS:

Twenty-nine subjects (15 cases and 14 controls) were enrolled. Statistically significant differences were not observed in the TPMT genotype (*1/*1 and *1/*3C) (P = 0.23) between cases and controls. NUDT15 genotypes (*1/*1 and *1/*3) (P = 0.65) also showed no statistically significant difference between cases and controls.

CONCLUSION:

The above genotypes do not appear to be associated with AZA-induced leukopenia in an eastern Indian population.
Effect of antibiotics on physical and physiological development of children under 5—A scoping review
Authors: Dumbre Dipali U. , Devi Seeta , Chavan Ranjana G.
Published: July 2024

The scoping review aimed to investigate and compile the effects of antibiotics on children under the age of five’s physiological development. A PubMed, CINAHL, and Medline online database search was conducted, and related studies were included in the databases to carry out a more detailed search of the available literature utilizing keywords like “Antibiotics in children’s”; “Children under 5”; and “Physiological Development, Physical Development,” as well as Boolean operators to generate papers pertinent which were correlating with the objective of the study. It is imperative to demonstrate that a comprehensive, wide-ranging, and exhaustive search was carried out. MeSH words used for the search. MeSH is an is an effective tool for indexing and classifying literature on biology and health. MeSH terms are affixed to articles to enable precise and effective literature searches, guaranteeing that scholars, medical professionals, and other users can locate pertinent data within the extensive PubMed database. MeSH provides researchers with a standardized and structured method of indexing topics in the field of medicine and related disciplines, which aids in the identification and organization of pertinent articles during scoping reviews. PRISMA checklist was followed while doing the data collection and data extraction. The findings revealed that antibiotics hurt the physical and physiological development of children under 5. The study findings show that after exposure to antibiotics children get obese, it also affects the gut microbiota. Antibiotics also have an impact on the language and behaviors of children under 5. It also shows that children are more prone to get different medical disorders. These results highlight how crucial it is to make well-informed decisions about the use of antibiotics in pediatric care. To sum up, giving antibiotics to kids younger than five can have a big impact on how their bodies develop. This study also provides and implements guidelines that consider the possible long-term effects on the development of children under the age of five when prescribing antibiotics. Encourage healthcare professionals, parents, and other caregivers to learn about the proper use of antibiotics for young children as well as the possible risks of overusing or not using antibiotics at all. Promote funding and research for alternative approaches, such as targeted vaccines or probiotics, to treat and prevent infections in young children.
A scoping review of individual health responsibility: A context-base concept
Authors: Hosseini Nodeh Zahra , Hosseini Mohammadali , Fallahi Khoshknab Masoud , Shirozhan Shima , Khankeh Hamid Reza
Published: July 2024

BACKGROUND:

Individual health responsibility plays an important role in maintaining and improving people’s health. There are controversial opinions related to this concept. This study aimed to investigate controversial opinions related to individual health responsibility and familiarize researchers and policy makers with the available evidence and gap of knowledge in the recent years.

MATERIAL AND METHOD:

This paper is a scoping review. The five-step approach of Arksey and O’Malley was used to review the relevant literature from the beginning of 2017 to the end of 2022. The search was done in the PubMed, Embase, Scopus, web of sciences, Cochrane databases, and Google Scholar search engine using the English keywords “health responsibility” AND “individual” OR “personal”.

RESULTS:

All articles and theses related to individual health responsibility, which were in English and had access to their full text, were included in the study. After a 2-stage screening for 1,412 articles and theses, 32 were included in the study. The findings indicated that most of the studies were conducted in developed European continent. The published articles included a wide range of quantitative, qualitative, and mixed research, and acute and chronic diseases have been considered in this field.

CONCLUSION:

Individual health responsibility is a multidimensional concept that is influenced by individual, social, and cultural factors, and emphasizing it can have both positive and negative effects on people’s health. To the concept be effective in health promotion, it is important to pay attention to individual and social context, health status, and community and health policy makers views about individual health responsibility.
A rare case of congenital vitiligo in a neonate with a review of literature
Authors: Behera Debasmita , Begum Farheen , Raj Chinmoy , Manocha Garima
Published: July 2024

Congenital vitiligo is a very rare entity, but cases in infancy have been reported. We are presenting the case of a 2-month-old male infant who came to us with complaints of multiple progressive white patches over the body since birth. The lesions showed white accentuation with fluorescence under a Wood’s lamp. There was a positive history of vitiligo in the maternal grandmother. The infant was successfully treated with topical pimecrolimus 1% cream. Our case in point contributes to the limited pool of studies on congenital vitiligo (nine cases reported till date) and lends credibility to the theory that, in genetically vulnerable individuals, the autoimmune process may begin in utero.
Stochastic Machine Learning Models for Mutation Rate Analysis of Malignant Cancer Cells in Patients with Acute Lymphoblastic Leukemia
Authors: Vasyl Martsenyuk , Sadiq Abubakar , Andriy Sverstiuk , Georgi Dimitrov , Tomasz Gancarczyk
Published: July 2024

Acute lymphoblastic leukemia, a pervasive form of the carcinogenic disease, is a lethal ailment subjecting numerous pediatric patients globally to terminal conditions. is a rapidly progressive condition, that exposes patients to conditions including Tumor Lysis Syndrome which often occurs early after the induction chemotherapy, contemporary research focuses primarily on the development of techniques for the early diagnosis of Acute Lymphoblastic Leukemia (ALL), leaving a gap within the literature. This study examines the application of machine learning techniques for the prognosis the mutation rate of cancer cells in pediatric patients with Acute Lymphoblastic Leukemia using clinical data from patients with ALL, who have undergone tests using Next Generation Sequencing (NGS) technology. An overview of the clinical data utilized is provided in this study, with a comprehensive workflow encompassing, data analysis, dimensionality reduction, classification and regression tree algorithm (CART), and neural networks. Results here demonstrate the efficiency with which these methods are able to target and decipher cancer cell proliferation in pediatric patients suffering from acute lymphoblastic leukemia. Valuable insights into relationships between key factors and conversion rates were also derived through data mining. However, tree classification and regression algorithms and neural networks used herein indicate the flexibility and the power of machine learning models in predicting the recurrence of cancer cells accurately. This study’s results affirm previous findings thus giving clinical proof for mutational drivers among pediatric patients having Acute Lymphoblastic Leukemia. This adds value to results by providing an applicable utility in medical practice. Principally, this study denotes a substantial advancement in leveraging machine learning workflows for mutation rate analysis of cancer cells. By appraising clinical corroboration, emphasizing the explain ability and interpretability, and building upon these findings, future research can contribute to improving patient care and results in the field of Leukaemia.
Desain Track Trace untuk Walking Measure pada Surveyor Jalan dan jembatan
Authors: Riski yuspa Vicki , Aditya Marcellino , Daniel Pandapotan Dan
Published: July 2024

Infrastruktur Indonesia mengalami peningkatan yang signifikan dalam Pembangunan Proyek Strategis Nasional (PSN), yang mencakup 201 proyek dan 10 program PSN. Konteks ini, tenaga ahli menjadi kunci di berbagai bidang terkait, termasuk bidang teknik sipil. Tugas dasar dalam bidang ini adalah melakukan survei, yang sering dilakukan oleh surveyor konstruksi menggunakan alat ukur yang tepat. Namun, penggunaan alat ukur seperti walking measure untuk pengukuran jalan dan lahan gedung seringkali menyebabkan keluhan sakit pada tubuh akibat cakupan pengukuran yang luas namun alatnya tidak ergonomis. Keluhan sakit pada tubuh pengguna, bertujuan untuk mengatasi masalah tersebut, dilakukan pengembangan tambahan pada alat bantu ukur walking measure dengan tujuan mengurangi keluhan fisik dan meningkatkan efisiensi kerja. Metode pengembangan ini meliputi observasi alat kerja yang digunakan, wawancara dengan pengguna, dan pengukuran tubuh dengan Nordic Body Map. Tahap Selanjutnya, dilakukan perancangan dengan metode SCAMPER dan pembuatan prototipe untuk diuji coba langsung oleh surveyor. Hasil uji coba menunjukkan beberapa temuan baru, seperti penambahan warna oranye stabilo pada rangka alat untuk meningkatkan visibilitas di lingkungan kerja yang berupa tanah, debu, dan bebatuan. Selain itu, kesalahan perhitungan ukuran oleh pengguna juga diidentifikasi sebagai masalah potensial yang mengakibatkan selisih hasil pengukuran dengan yang sebenarnya. Proses pengembangan produk berjalan tanpa kendala, produk berfungsi dengan baik dalam penggunaan normal.
PENGARUH PERUBAHAN INVENTARIS JALAN TERHADAP KUALITAS UDARA (EMISI GAS BUANG KENDARAAN) DI JALAN IMAM BONJOL DENPASAR DENGAN PENDEKATAN MIKROSIMULASI
Authors: Wahyu Dwi , Suartawan Putu Eka , Atmajaya Aswin Badarudin
Published: July 2024

Perubahan tata guna lahan pada daerah perkotaan memicu naiknya pertumbuhan akan pergerakan dalam menunjang kegiatan masyarakat. Semakin tinggi pergerakan masyarakat maka diperlukan prasarana pendukung transportasi yang memadai berupa kapasitas jalan yang lebih besar sehingga arus kendaraan yang dapan melalui jalan tersebut semakin besar pula, seperti yang terjadi di jalan Imam Bonjol Denpasar yang melakukan pelebaran jalan untuk menampung jumlah kendaraan yang semakin banyak dan sampai saat ini belum diketahui bagaimana kualitas udara yang diakibatkan oleh produksi gas buang kendaraan yang melintas di jalan Imam Bonjol Denpasar. Maka dari itu, penelitian ini bertujuan untuk mengetahui kualitas udara yang disebabkan emisi gas buang tersebut. Pada penelitian ini kami menggunakan metode pemodelan vissim yang telah dikalibrasikan inventarisasi ruas jalan, kecepatan, dan volume yang kemudian dapat menentukan keluaran emisi kendaraan yang kemudian menghasilkan persentase keluaran gas buang yang dihasilkan yaitu adanya lonjakan hasil keluaran gas CO dan NOx sampai 216,21% setelah pelebaran jalan.
THE FACTORS INFLUENCING SEMARANG UNIVERSITY (USM) STUDENTS' PREFERENCES IN USING ONLINE TRANSPORTATION
Authors: Marshush Ummi Hanifah , Murni Murni , Hilmansyah Hilmi
Published: July 2024

Semarang city, as a metropolitan city, has not escaped the development of online transportation. There are several online transportation that are often used, namely Gojek, Grab and Maxim. The existence of online transportation can provide additional choices of transportation modes that can be used. Choosing online transportation to carry out daily activities cannot be separated from the push and pull factors for each individual which are definitely different. Therefore, this research aims to determine the factors that influence Semarang University students' preferences for using online transportation. This research was conducted using quantitative methods and multiple linear regression analysis techniques. Overall internal factors influence USM students' preferences in using online transportation, namely (0.720) or 72%. However, the main factors that influence this are feelings of stress, difficulty getting parking and not having a private vehicle. Meanwhile, external factors as a whole influence USM students' preferences for using online transportation, namely (0.680) or 68%. The main factors that influence this are punctuality and ease of using online transportation.
SERVICES OF THE KAMILIAN ORDER TOWARDS ODGJ IN SIKKA, FLORES, ACCORDING TO JOHN 4:1-42
Authors: Bour Eugenius Koresy , Dhogo Petrus Cristologus , Widyawati Fransiska
Published: July 2024

People with Mental Disorders (ODGJ) are a marginalized group who often receive inhumane treatment, are discriminated against, abandoned and become victims of violence. This article explores the pastoral care carried out by the Kamilian Order in Sikka, East Nusa Tenggara Province towards the ODGJ group from 2016 to 2023 and reflects on this work in the light of the Gospel of John 4:1-42. The method used is qualitative. Field data was obtained through interviews and participatory observation. The results of the research found that the Kamilian Order had implemented four superior routine programs, namely: 1) conducting professional searches and data collection on ODGJ, 2) building communication and education with patients and their families, 3) providing spiritual services, and 4) building safe houses free of shackles. Through this work, the Kamilian Order has presented a Christ who cares for and saves the small and marginalized, as is the message of the Gospel of John 4:1-42. This research concludes that the Kamilian Order has a significant concern and pastoral role in humanizing ODGJ in Sikka, NTT and realizing the gospel of liberation for marginalized people.
Cover Jurnal
Authors: Jurnal Cover
Published: July 2024

Cover Jurnal
Daftar Isi
Authors: Isi Daftar
Published: July 2024

Daftar Isi
Analisis dan Pengujian Sistem Informasi Penjualan menggunakan Metode Boundary Value Analysis dan Metode Equivalence Partitioning
Authors: Nevile Steven , Andika Irfan , Satya Richard
Published: July 2024

Sistem informasi penjualan pada PT. Tri Pratama Permai merupakan aplikasi yang digunakan karyawan untuk bisa mengelola penjualan maupun mengelola informasi barang yang keluar dan masuk dari gudang.Untuk mencegah terjadinya ketidakpuasan oleh pengguna dalam mengakses sistem informasi, maka dilakukan pengujian untuk memastikan kesesuaian antara perangkat lunak yang sudah dibangun dengan dokumen SRS. Pengujian dilakukan untuk mengevaluasi kesesuaian antara tujuan pembuatan aplikasi dengan fungsi-fungsi yang terdapat pada Sistem Informasi Penjualan. Pengujian Perangkat Lunak (Software Testing) adalah tahap dalam proses pelaksanaan program yang bertujuan untuk menemukan kesalahan pada aplikasi. Teknik pengujian yang digunakan adalah Boundary Value Analysis (BVA). Boundary Value Analysis merupakan teknik dalam metode pengujian Black Box yang bertujuan untuk menguji nilai input dengan menentukan batas atas dan batas bawah pada setiap data masukan. Diagram lain dalam UML juga diperhatikan untuk mengevaluasi seluruh fungsionalitas aplikasi. Hasil pengujian pada inputan data, beberapa inputan ada yang tidak memenuhi persyaratan sesuai dokumen SRS, akan tetapi sistem juga dapat mendeteksi kesalahan tersebut sehingga proses penyimpanan data tidak dilanjutkan.
Analisis & Pengujian Black Box Pada Aplikasi Pencatatan Material Menggunakan Metode Boundary Value Analysis
Authors: Alessandro Febryan , Steven Steven , Sudianto Kevin Fransisco , Sudrajat Antonius Wahyu
Published: July 2024

Aplikasi persediaan pada suatu perusahaan selalu berkaitan dengan mengelola pendataan suatu barang mulai dari stok barang, barang masuk serta barang keluar. Pada aplikasi persediaan PT. ABC ini merupakan aplikasi yang digunakan untuk mendata stok persediaan material pada perusahaan, lalu sebelum aplikasi ini akan secara resmi digunakan dalam kegiatan operasional, sangat pentingnya dilakukan proses pengujian pada aplikasi ini yang berguna untuk menghindari bug atau error yang bisa terjadi pada aplikasi serta untuk mendukung kelancaran pada saat proses operasional pada perusahaan nantinya. Pada pengujian kali ini akan menggunakan pengujian Black Box Testing dengan metode Boundary Value Analysis yang pengujiannya akan dibagi menjadi beberapa test case dan dengan memasukkan beberapa inputan yang berbeda pada aplikasi. Pada hasil pengujian menggunakan metode BVA terdapat beberapa test case yang mendapatan hasil tidak sesuai yang diinginkan tetapi hal tersebut hanya sebagian kecil dari semua test case yang diuji dan kebanyakan dari test case yang telah diuji mendapatkan hasil yang sesuai dengan yang dituju.
Pengujian Black Box Aplikasi Inventaris dengan Boundary Value Analysis di PT Duo Roda Motor
Authors: Sutomo Maverick , Simamora Fillipo Elly Berhauzer
Published: July 2024

Penelitian ini bertujuan untuk menguji aplikasi inventaris di PT Duo Roda Motor Palembang menggunakan metode black box dengan pendekatan Boundary Value Analysis (BVA). Perusahaan yang bergerak dalam distribusi dan penjualan sepeda motor ini membutuhkan sistem manajemen inventaris yang efisien untuk mendukung operasional bisnis dan kelangsungannya. Metode penelitian melibatkan pengumpulan data, kajian literatur, penetapan kasus uji, pelaksanaan pengujian BVA, analisis hasil uji, dan dokumentasi. Pengujian dilakukan dengan memeriksa variabel input pada batas minimum, nilai nominal, dan maksimum. Hasil penelitian menunjukkan bahwa aplikasi inventaris ini dapat mengatasi berbagai tantangan dalam pengelolaan stok dan memastikan aplikasi berfungsi dengan baik dalam berbagai kondisi input. Metode BVA terbukti efektif dalam mengidentifikasi kesalahan pada batas domain input, sehingga meningkatkan keandalan dan kualitas aplikasi. Penelitian ini memberikan wawasan penting mengenai keandalan dan kualitas aplikasi inventaris di PT Duo Roda Motor Palembang.
Configuración y gestión de equipos VOIP
Authors: Guaña Moya Edison Javier , Cabrera Sanmartín Ana Patricia , Camacho Reyes Ronald Durvanny , Marcillo Vera Fabricio Rolando
Published: July 2024

El crecimiento significativo de la tecnología VoIP en los últimos años, tanto para uso personal como empresarial, se ha visto impulsado por el desarrollo de estándares y protocolos mejorados, como H.323, que han mejorado la interoperabilidad y seguridad de las comunicaciones. VoIP permite la transmisión de voz, vídeo y datos a través de redes IP, ofreciendo una alternativa flexible y rentable a los sistemas telefónicos tradicionales. El libro se centra en la configuración y gestión de dispositivos MultiVoIP de Multitech, específicamente las series MVP 400 y MVP 200, utilizando el estándar H.323, proporcionando una guía práctica para implementar y administrar estos dispositivos en una red VoIP. Además, destaca la importancia del estándar H.323 en la evolución de las comunicaciones multimedia sobre redes dispersas. Asimismo, el documento discute las tendencias futuras, como la integración de inteligencia artificial y el despliegue de redes 5G, que prometen mejorar la eficiencia y calidad de las tecnologías VoIP, consolidando su posición como una opción avanzada y versátil de comunicación.
Nghiên cứu giá trị tiên lượng băng huyết sau sinh sớm dựa vào mô hình kết hợp ở phụ nữ mang thai sinh đường âm đạo
Authors: Lý Thị Hương , Hồ Trần Tuấn Hùng , Nguyễn Vũ Quốc Huy
Published: July 2024

Mục tiêu: Đánh giá giá trị tiên lượng băng huyết sau sinh sớm ở phụ nữ mang thai sinh đường âm đạo dựa vào các mô  hình kết hợp CMQCC, AWHONN và ACOG. 
Đối tượng và phương pháp nghiên cứu: Nghiên cứu thuần tập hồi cứu trên 1.655 sản phụ (trong tổng số 9.706 sản phụ) đến  sinh tại Khoa Phụ Sản Bệnh viện Trường Đại học Y Dược Huế từ tháng 5/2020 đến tháng 6/2022, thoả mãn tiêu chuẩn chọn  bệnh: 1) Sản phụ mang thai có tuổi thai từ 22 tuần 0 ngày trở lên tính theo kinh cuối cùng hoặc dự kiến sinh theo siêu âm,  theo dõi nội trú; 2) Chuyển dạ tự nhiên hoặc khởi phát chuyển dạ và kết thúc bằng sinh đường âm đạo gồm sinh thường  hoặc sinh thủ thuật. Thu thập các yếu tố tiền sử, lâm sàng và cận lâm sàng, đánh giá và sắp xếp sản phụ vào phân tầng  nguy cơ theo ba bộ công cụ CMQCC, AWHONN và ACOG với 2 khoảng thời gian: 1) T1 là từ khi nhập viện theo dõi sinh và  cho đến kết thúc sổ thai (giai đoạn hai của chuyển dạ); 2) T2 là từ khi sau sổ thai và tính đến 1 giờ sau sinh. Số liệu được  nhập bằng phần mềm Epidata 3.0 và phân tích số liệu bằng phần mềm SPSS 20.0 
Kết quả: Đa số sản phụ trong nghiên cứu có độ tuổi từ 20 tuổi đến 34 tuổi. Sản phụ sinh con so, đơn thai, chuyển dạ tự  nhiên và sinh thường với tuổi thai từ 38 - 42 tuần chiếm đa số. Cân nặng trung bình của trẻ sau sinh là 3118,1 ± 434,6  gram. Băng huyết sau sinh sớm chiếm tỷ lệ 2,8%. Phân tầng nguy cơ băng huyết sau sinh: 1) Tại thời điểm T1, theo các bộ  công cụ CMQCC, AWHONN và ACOG: Phần lớn các sản phụ thuộc nhóm nguy cơ thấp, lần lượt là 93,0%, 90,1% và 93,6%;  2) Tại thời điểm T2, theo bộ công cụ CMQCC và ACOG: Nhóm nguy cơ thấp chiếm tỷ lệ cao nhất (87,6% và 88,1%), theo bộ  công cụ AWHONN: Nhóm nguy cơ trung bình có tỷ lệ cao nhất (78,6%). Bộ 3 công cụ CMQCC, AWHONN và ACOG đều cho  kết quả giá trị tiên đoán âm tính cao (trên 97,0% ở T1 và trên 99,5% ở T2) và khả năng cần truyền máu sau sinh (trên 91%  ở T1 và 80% ở T2). 
Kết luận: Cả ba bộ công cụ CMQCC, AWHONN và ACOG đều cho kết quả giá trị tiên đoán âm tính cao ở hai thời điểm trước  và sau sinh, giúp loại trừ phần lớn trường hợp ít có khả năng băng huyết sau sinh sớm và khả năng cần truyền máu sau  sinh để tập trung nguồn lực theo dõi nhóm các sản phụ có yếu tố nguy cơ cao hơn.
So sánh kết quả nuôi cấy phôi sau thụ tinh trong ống nghiệm cổ điển (IVF) và tiêm tinh trùng vào bào tương noãn (ICSI) ở bệnh nhân mắc Hội chứng buồng trứng đa nang
Authors: Đặng Thị Hồng Nhạn , Lê Minh Tâm
Published: July 2024

Mục tiêu: So sánh chất lượng phôi của các chu kỳ thực hiện kỹ thuật thụ tinh trong ống nghiệm cổ điển (IVF) và tiêm  tinh trùng vào bào tương noãn (ICSI) trên noãn chị em ở bệnh nhân mắc Hội chứng buồng trứng đa nang và có tinh trùng  bình thường. 
Đối tượng và phương pháp nghiên cứu: Thiết kế nghiên cứu mô tả cắt ngang thực hiện IVF/ICSI trên noãn chị em trên 50  cặp vợ chồng với người vợ mắc Hội chứng buồng trứng đa nang và người chồng có tinh trùng bình thường thực hiện thụ  tinh trong ống nghiệm bằng IVF và ICSI. Tế bào noãn chị em được chọn ngẫu nhiên để tiến hành thụ tinh bằng IVF hoặc  ICSI thông thường. Nghiên cứu tiến hành đánh giá tỷ lệ thụ tinh, tỷ lệ phôi phân cắt và chất lượng phôi nang ở cả 2 nhóm. 
Kết quả: Nhóm thực hiện IVF có tỷ lệ phôi nang và tỷ lệ tạo phôi nang tốt vào ngày 5 cao hơn có ý nghĩa thống kê so với  nhóm thực hiện ICSI (p = 0,018 và p = 0,028). Số hợp tử, số phôi ngày 2, số phôi tốt ngày 2, số phôi nang ngày 5, số phôi  nang tốt ngày 5, tỷ lệ thụ tinh, tỷ lệ phôi phân cắt và tỷ lệ tạo phôi tốt ngày 2 giữa 2 nhóm khác biệt không có ý nghĩa  thống kê. 
Kết luận: Tỷ lệ tạo phôi nang chất lượng cao hơn ở nhóm IVF so với nhóm thực hiện ICSI. ICSI không giúp cải thiện kết  quả thụ tinh trong ống nghiệm so với IVF ở những bệnh nhân mắc hội chứng buồng trứng đa nang và không do yếu tố  nam giới.
Position Paper on bisphenol A
Authors:   Committee on Toxicity of Chemicals in Food, Consumer Products and the Environment (COT)
Published: July 2024

The Committee on Toxicity of Chemicals in Food, Consumer Products and the Environment (COT) reviewed the scientific basis and implications for risk management of the new European Food Safety Authority (EFSA) tolerable daily intake (TDI) for bisphenol A (BPA), and the subsequent assessment by the German Federal Institute for Risk Assessment (BfR).
Tooth Fairy Mith: children's self-perception of the loss of Deciduous teeth
Authors: Dias Maria do Rosário , Neves Ana Cristina
Published: July 2024

We intend to understand how children intrapsychically experience, the process of losing their Deciduous Dentition and the self-perception of the face; 115 children of both genders, aged between 5-12 y, were interviewed and – Empirical Protocols – were designed, in which the child was invited to draw their self-portrait in two different moments – Before (M1) and After (M2) the experience of losing their Deciduous teeth answer a set of open questions as well as a demographic questionnaire. The interpretative analysis of the pictorial narrative of the drawings (n=330) and the open-ended questions was carried out using two content analysis grids, created specifically for this research.  The results suggest the existence of analytical differences between the self-perception of the face, Before (M1) and After (M2) the loss of Deciduous Teeth. The analysis of the pictorial content of the drawings also reveals some notable differences, in terms of the pictorial investment demonstrated in the two drawings, created by each child. The results also suggest the existence of an adjusted mourning process when each of the primary tooth is lost. The results of the present study allow us to recognize some differences in terms of self-perception of the image of the face, before and after the loss of deciduous teeth, which points to the identification of possible clues that could help us to understand, how the loss of deciduous teeth can be experienced by the child as a process of mourning, also highlighting the role of the dentist as a health educator.
Instrumento para identificar los factores de riesgo asociados a la deserción universitaria
Authors: Toiber Jana Aylim Mejía , Castilla Ana María Cuellar , González Manuel Alejandro Gutiérrez , Rodríguez Patricia Ducoing , Castro Rodrigo Puga
Published: July 2024

La deserción escolar universitaria está influenciada por factores tanto internos como externos. Para investigar este complejo fenómeno se desarrollaron dos instrumentos de evaluación: el instrumento A, diseñado para evaluar factores de riesgo internos, y el instrumento B, dirigido a factores de riesgo externos. Los 1.375 participantes pertenecían a programas de dos años (TSU, Técnico Superior Universitario) o cuatro años (Licenciatura), y proporcionaron respuestas con una escala tipo Likert. Un análisis factorial realizado sobre los datos obtenidos del instrumento A reveló cinco dimensiones discernibles, siendo la "satisfacción y compromiso académico" (λ=6,05) la más destacada, seguida de las "habilidades del estudiante" (λ=2,32). De manera similar, un análisis factorial realizado con los datos del instrumento B delineó cinco dimensiones distintas, con especial importancia otorgada a la "suficiencia económica escolar" (λ=5,91) y la "comodidad económica" (λ=3,08). Los instrumentos de evaluación incluyeron un cuestionario sobre información sociodemográfica e historial académico. El análisis reveló que los estudiantes matriculados en programas de grado intensivos de dos años (TSU intensivo), los estudiantes que habían realizado extraordinarios, los estudiantes que autoevaluaban sus habilidades académicas como bajas y los estudiantes con bajas calificaciones, tenían un mayor riesgo de abandono debido a factores internos (Instrumento A). Con respecto a los factores externos (Instrumento B), los estudiantes con dependientes económicos, los estudiantes que tienen trabajo y los estudiantes de familias con menor nivel educativo tuvieron un mayor riesgo de abandono. Estos hallazgos informarán a futuros trabajos sobre intervenciones específicas y políticas públicas destinadas a reducir las tasas de deserción escolar entre los estudiantes vulnerables.
Factores académicos incidentes en la intención de abandono de estudios universitarios
Authors: Bá Cahuec Macario
Published: July 2024

PROBLEMA: abandono de los estudios de estudiantes de la Facultad de Humanidades de la Universidad de San Carlos del municipio de El Estor, departamento de Izabal. OBJETIVO: establecer los factores académicos que han sido desmotivantes e influyentes para considerar abandonar la carrera universitaria. MÉTODO: el estudio se realizó con enfoque mixto, utilizando para ello las técnicas de encuesta y entrevista. La muestra estuvo integrada por el total de estudiantes activos de la Universidad de San Carlos de Guatemala sede 73, El Estor, departamento de Izabal; siendo 42 estudiantes y 3 docentes asignados para la carrera de Profesorado de Enseñanza Media en Pedagogía y Ciencias Naturales con Orientación Ambiental.  RESULTADOS: se establece que, el rendimiento académico es el factor determinante, por lo que los estudiantes, abandonan sus estudios, mismo que se refleja en la investigación, con un 35.7%.   Dicha situación se vincula con otros factores, como:  la modalidad virtual, (26.2 por ciento), que fue, no sólo una moda, sino una exigencia por la época en la que se llevó a cabo el referido estudio. CONCLUSIÓN: al término de la investigación se concluye que, los factores académicos incidentes en la intención de abandono de estudios han sido: bajo rendimiento académico, las dificultades de acceso a la tecnología que requiere la modalidad virtual y como hallazgo emergente, se encuentra los factores económicos.
Pengembangan Video Pembelajaran Berbasis Doratoon Materi Sejarah Peradaban Islam SMA
Authors: Fakhrunnisaa Nur , Isnaini Hikmah , In Nurul
Published: July 2024

Islamic education requires more media variation in its presentation. One of the learning media variations is video learning, created using the doratoon application. This research aims to find out the validity and level of popularity of video learning material of the history of Islamic civilization. Research methods using R&D methods (research and dvelopment), with 4D models (define, design, develop, disseminite). Data collection techniques using interviews and lifts, as well as data analysis using quantitative descriptives. The research was conducted at UPT State High School 1 Sinjai, with research subjects of 35 students of X1 class. The results of the study showed the validity rate of the video learning material of the history of Islamic civilization based on the evaluation of the material expert was 90%, the average media expert was 83%, and the average learning expert was 91%, the third evaluation result of the entry into the category is very valid, as well as the rate of validity of the Video learning material history of the Islamic civilization average of 74% was in the category of interest. So, the video learning material of Islamic civilization is very valid and interesting to use in learning.
Representasi Budaya dalam Materi Pembelajaran Bahasa Indonesia Kurikulum Merdeka Tingkat SMA
Authors: Miranti Miranti , Mukodas Mukodas , Anwar Miftahulkhairah
Published: July 2024

In the context of the development of the Merdeka Curriculum in Indonesia, this study highlights the importance of understanding how cultural values are reflected in Indonesian language learning at the high school level. The research method used is descriptive using qualitative analysis to explore the integration of local culture and the use of local languages in the “Cerdas Cergas Berbahasa dan Bersastra Indonesia” textbook for grades X, XI, and XII. The findings show that the adoption of folklore, customs and local languages in the curriculum not only enhances students' understanding of Indonesia's cultural heritage, but also provides a rich and meaningful learning experience. As such, this integration provides a strong national identity for students and reinforces a sense of pride in the nation's culture. This research makes an important contribution to understanding how education can be an effective vehicle for enriching and maintaining cultural diversity in Indonesia.
MACHINE LEARNING METHODS AS AN ALTERNATIVE TO FACTORIZATION OF MULTIDIMENSIONAL DATA
Authors: Slavutskii Leonid A. , Slavutskaya Elena V.
Published: July 2024

Multidimensional random data and information flows often have different or limited numerical dimensions. When analyzing the intra-system relationships of such data, correlation and factor analysis are ineffective.

The purpose of the study is to evaluate the possibilities of the combined use of the “decision tree” method and the artificial neural networks for the analysis of multidimensional random data.

Materials and methods. Machine learning methods are used to classify multidimensional random data with different numerical dimensions and statistical distribution. The analytical platform “Deductor” is used as the software. The experimental data set contains 27 random parameters. The system analysis was carried out on a sample of 200 to 500 values of each parameter.

Results. It is shown that the proposed approach to the system analysis of multidimensional information flows has a number of advantages over traditional correlation and factor analysis. It does not impose restrictions on statistical distributions, allows one to work with a limited data sample, and select the most significant parameters.

Conclusions. The combined use of machine learning methods allows one to significantly reduce the training sample without losing the calculations accuracy. For technical applications, this makes it possible to receive and analyze information dynamically, in real time using standard microprocessor equipment. The results can be applied in the tasks of information exchange and cybersecurity of the electric power industry.
THE TECHNIQUE OF REVERSE ENGINEERING OF ELECTROMAGNETIC CONTACTOR
Authors: Ivanov Ivan P. , Mikhailov Alexey V. , Moiseev Sergey A.
Published: July 2024

When creating new objects, reverse engineering technologies are often used. Unlike traditional (direct) engineering, when a product is created from scratch, with reverse engineering, a new product is developed based on a prototype, which significantly saves money and reduces time. The purpose of the study is to systematize and evaluate the main approaches of reverse engineering of modern electromagnetic contactors. Materials and methods. The paper uses comparative analysis and generalization of the results in graphical form, and computer mathematical modeling in the COMSOL software product. Research results. A variant of the content and sequence of stages which is typical of reverse engineering of an electromagnetic contactor is presented. The stages of reverse engineering of an electromagnetic contactor are formulated and analyzed in detail. The main part of the design consists in the development of a 3D model of the prototype based on the results of digitization of its parts, as well as modeling and research of the main components (contact and magnetic systems) using their computer mathematical models (model experiments). As an example, the modeling of the magnetic system of a DC contactor is considered in detail. Based on the results of optimization and design development, a 3D model of the new contactor is developed. Conclusions. A method of reverse engineering of an electromagnetic contactor based on the use of modern CAD and CAE systems is proposed. The main difference of the technique is the optimization of the design based on the results of model experiments performed with minimal time in standard software products that do not require expertise.
METHOD FOR IMPLEMENTING SENSORLESS FEEDBACK FOR INTERNAL DRIVE CONTROL LOOP USING KALMAN FILTERING ALGORITHM
Authors: Malinin Grigoriy V. , Ekantyev Andrey I.
Published: July 2024

The paper discusses the implementation of a three-circuit control system for the angular position of the drive output shaft. An armature current sensor, an angular velocity sensor of the DC motor output shaft, and an angular position sensor of the drive output shaft are used as feedback sensors. As a rule, the introduction of all of these sensors into a product that has already been put into operation cannot be carried out, in addition, one or another sensor of the internal drive control loop may fail. The three-circuit control system, in turn, has significant advantages when controlling the angular position of the drive output shaft in relation to the single-circuit control system. The paper shows that three-loop control can be implemented even in the absence of feedback sensors in the internal control loops: instead of measuring the controlled variables, in this case they are evaluated.

The purpose of the study is construction of a three-loop control system in the absence of sensors of internal control loops using the assessment of controlled variables by a discrete Kalman filtering algorithm.

Materials and methods. To implement the proposed algorithm, a mathematical model of the drive has been developed, taking into account each control loop and all controller parameters. Modeling of a system with feedback sensors or evaluation of variables of internal control loops is carried out in the MATLAB Simulink software environment.

Research results. Simulation shows that three-loop control of the angular position of the drive output shaft with one physical feedback sensor of the external control loop can be achieved by estimating the variables of the internal control loops of the drive with a discrete Kalman filter. In this case, an increase in the overshoot of the angular position is observed compared to the option of constructing a system with sensors in feedback circuits. To reduce overshoot in the drive transfer function, the damping coefficient is increased and its most optimal value is selected. The quality of regulation in the resulting system does not deteriorate.

Conclusions. The implementation of sensorless feedback is possible, but it requires additional computational costs, which makes the computer more expensive. Also, inaccurate correspondence of estimates of control variables of internal loops to their actual value leads to the need to correct the calculated parameters of the regulator of the external control loop of the drive.