bluuebunny/crossref_metadata_2025_split huggingface dataset:
Novel three-dimensional semi-rigid ring annuloplasty for concomitant tricuspid valve regurgitation
Authors: Tarabal Bernardo Parreiras Guimarães , Silva Marcus Vinícius de Paula da , Ruiz Gabriela Zamunaro Lopes , Caldas Mônica Maria Costa , Silva Thuanny Granato Fonseca , Coppola Fernanda de Figueiredo , Nunes Maria do Carmo Pereira , Asil Anas Sarraj , Gelape Cláudio Léo 
Published: January 2025

Objective: Several two and three-dimensional tricuspid valve annuloplasty rings have been used to deal with functional tricuspid valve regurgitation. However, residual or recurrent valve regurgitation occurs in 20% to 30% of patients. Here we report on the first experience with a new 3-dimensional semi-rigid annuloplasty ring. Methods: From January 2018 and December 2021, 20 patients underwent tricuspid valve annuloplasty for functional tricuspid valve regurgitation using a new 3-dimensional semi-rigid Star annuloplasty ring (manufactured by LABCOR®). Eighteen patients had associated mitral valve replacement; one had aortic and mitral valves replacement; and one a mitral valve repair. The tow year’s follow-up rate was 100% (cumulative total 20 patient-years). Results: Reduction of left atrium diameter (57.7 ± 8.4mm preoperatively to 51.1 ± 8.7mm post-operatively), reduction of tricuspid annulus (42 ± 16.3mm preoperatively to 26 ± 3.8mm postoperatively), reduction of tricuspid valve regurgitation, and a significant improvement of functional capacity on a clinical evaluation from an average of class 2.75 ± 0.7 preoperatively to class 1.2 ± 0.6 at the end of follow-up. Conclusions: This novel 3-dimensional semi-rigid Star annuloplasty Ring® is safe, with no patient experiencing atrioventricular disjunction or needed pacemaker implant, and it is effective especially in patients with severely dilated tricuspid annulus and right ventricular dysfunction.
Статистическая оценка уровней излучения антенн в исследованиях электромагнитной совместимости
Authors: Ястребцова О.И. 
Published: January 2025

В статье рассмотрен вопрос статистической оценки диаграмм направленности антенн для исследований электромагнитной совместимости. Представлен анализ статистического распределения величины отклонения излучения антенны от «пиковой» огибающей, что позволило сформулировать модель прогнозирования уровней излучения для любого процента времени. На данный момент в исследованиях электромагнитной совместимости используются «пиковые» и «средние» огибающие, соответствующие 0% и приблизительно 50–60% времени, в течении которых уровень излучения может быть превышен. Разработанная модель позволяет расширить понятие огибающих боковых лепестков на случай произвольного процента времени. Она применима к направленным антеннам с прямоугольными и круглыми раскрывами с различными амплитудными распределениями, т.е. например, к зеркальным антеннам и антенным решеткам. Модель может быть использована в исследованиях электромагнитной совместимости, проводимых методом Монте-Карло, или в расчетах единичных помех с использованием защитных критериев, которые могут превышаться в некотором заданном проценте времени.
The article considers the issue of statistical assessment of antenna radiation patterns for electromagnetic compatibility studies. An analysis of the statistical distribution of the deviation of antenna radiation from the “peak” envelope is presented, which made it possible to formulate a model for predicting radiation levels for any percentage of time. Current electromagnetic compatibility studies use “peak” and “average” envelopes corresponding to 0% and approximately 50-60% of the time during which the radiation level can be exceeded. The developed model allows to extend the concept of side lobe envelopes to the case of any percentage of time. It is applicable to directional antennas with rectangular and circular apertures with different amplitude distributions, i.e., for example, to reflector antennas and antenna arrays. The model can be used in electromagnetic compatibility studies conducted using the Monte Carlo method or to calculate single interference using protection criteria that can be exceeded in a certain percentage of time.
Модель оценки защищенности элементов телекоммуникационного оборудования
Authors: Саенко И.Б. , Васин А.В. , Марлей В.Е. , Лебедев С.Л. , Ермаков А.В. 
Published: January 2025

Предложена математическая модель, позволяющая оперативно рассчитать текущий уровень защищенности оборудования пакетной коммутации сетей связи, в том числе при изменении любого его показателя (настройки). Кроме того, параметры модели позволяют сделать прогноз состояния защищенности оборудования на ближайшую перспективу.
A mathematical model is proposed that allows us to quickly calculate the current level of security of packet switching equipment for communication networks, including when changing any of its indicators (settings). In addition, the model parameters allow you to make a forecast on the state of equipment security in the near future.
Development of a Mobile Web-Based Food and Beverage Ordering Application in aYouth Cafe With QR Code Technology
Authors: Adilla Faradila A.Sagaf  , Ichsan Ibrahim  
Published: January 2025

The implementation of QR Code technology at Youth Cafe aims to increase ordering efficiency and provide a more comfortable experience for customers. Each table is equipped with a unique QR code that can be scanned to access the menu and place orders via the mobile web-based application. This application was designed using Native PHP with MySQL as the database, to ensure stability and optimal performance. The success of the system is measured by increasing order time efficiency by up to 50%, reducing manual errors by 90%, and the system's ability to handle up to 500 orders per day without interruption. Customer surveys show satisfaction levels increased by 35% after application implementation. These results show that the use of QR Code technology has succeeded in improving operations, efficiency and service quality at Youth Cafe, as well as making a significant contribution to innovation in the food and beverage industry.
Website Security Analysis Using Vulnerability Assessment Method
Authors: Haeruddin  , Gautama Wijaya  , Winata Hendra , Sukma Aji  , Muhammad Nur Faiz  
Published: January 2025

In today’s digital era, ensuring website security is crucial, especially in the education sector which is frequently targeted by cyber attacks. This research aims to test security of the Universitas Internasional Batam (UIB) website using OWASP ZAP and Nessus. The method will be used in this research was vulnerability assessment. It will involve gathering information with the tools such as, Nmap, whois and nslookup. OWASP ZAP detected 11 vulnerabilities, categorized into 6 medium level and 5 low level, including Content Security Policies (CSP) and anti-clickjacking headers. Otherwise, Nessus only detected one medium level vulnerability, the absence of HTTP Strict Transport Security (HSTS). The difference in detection results from the tools that OWASP ZAP is better at finding web application weakness that are consistent with the OWASP Top Ten 2021, while Nessus specifically targets server and network configuration. For educational institutions, these results emphasize the importance of conducting regular vulnerability assessment to protect sensitive data. Recommended action include implementing CSP to prevent Cross-site scripting (XSS) and other injection attacks, enforcing HSTS to secure communication, and its recommend to updating software to mitigate the unknown vulnerabilities. By adopting these measures, institutions can reduce their exposure to cyber attacks, its also can maintain user trust, and strengthen overall security. This research provides a pratical framework for stregthening the security of educational websites against evolving threats. These findings highlight that the importance of using multiple tools can provide a more comprehensive view of security gaps.
Penerapan Algoritma K-Means Clustering Pada Segmentasi Tenaga Kerja di Batam Dalam Sektor Manufaktur
Authors: Darmansah  , Fitra Kasma Putra  , Tomy Nanda Putra  
Published: January 2025

Penelitian ini bertujuan untuk menerapkan algoritma K-Means Clustering dalam segmentasi tenaga kerja di Batam pada sektor manufaktur, yang merupakan salah satu pusat industri penting di Indonesia. Dalam menghadapi tantangan peningkatan produktivitas dan efisiensi di sektor ini, segmentasi tenaga kerja berdasarkan karakteristik tertentu menjadi penting untuk membantu perusahaan dalam mengelola sumber daya manusia secara lebih efektif. Algoritma K-Means Clustering digunakan untuk mengelompokkan pekerja berdasarkan variabel-variabel seperti Id Pekrja, Usia, Pendidikan, Pengalaman Kerja, Gaji dan keterampilan Teknis. Data yang digunakan dalam penelitian ini berasal dari perusahaan manufaktur di Batam dengan jumlah pekerja yang signifikan. Setelah melalui tahapan praproses data, algoritma K-Means diterapkan untuk mengidentifikasi segmen-segmen pekerja yang memiliki karakteristik serupa. Hasil dari penelilitian yaitu Penelitian menghasilkan pengelompokkan tenaga kerja dalam industri manufaktur di Batam menjadi 3 kelompok yaitu C_0, C_1 dan C_2. Kemudian Jumlah pekerjada dibidang manukfaktur di kota batam terdapat paling banyak ada dalam cluster C_0 dalam kategori pekerja pemula dengan tingkat pendidikan SMA, C_1 dalam katergori pekerja menengah untuk Tingkat Pendidikan D3 dan S1 dan C_2 dalam kategori pekerja senior dengan Tingkat Pendidikan S2.
Sistem Pendukung Keputusan Penentuan Stunting Di Gorontalo Menerapkan Metode Multi Attribute Utility Theory
Authors: Santawali  , Muhammad Isla  , Citra Yustitya Gobel  
Published: January 2025

Stunting merupakan ketidakmampuan untuk tumbuh dan berkembang pada Balita disebabkan oleh kekurangan gizi jangka panjang, Penelitian ini bertujuan untuk membangun Sistem Pendukung Keputusan Penentuan Tingkat Kerentanan stunting pada Balita dengan melakukan analisis penerapan metode Multi Attribute Utility Theori pada pelayanan kesehatan di gorontalo. Urgensi Penellitian ini bahwa prevalensi stunting di Provinsi Gorontalo sebesar 23,8% termasuk ke kategori tinggi, data stunting diakhir desember 2023 berjumlah 4.545 anak, oleh sebab itu dibutuhkan sistem Pendukung untuk penentuan Tingkat Kerentanan Stunting balita yang kompherensi dan akurat. sehingga segera mendapatkan penanganan tepat. Metode Penelitian yang digunakan ialah Research and Development (R&D) yang merupakan proses untuk merancang dan mengembangkan sebuah sistem yang bertujuan mendukung pengambilan keputusan terkait pencegahan atau penanganan stunting. Hasil Pengujian Sistem Menggunakan Metode Whitebox memperoleh V(G) = 2 dan hasil Cyclometic Complexity (CC) = 2 serta Hasil Independent Path adalah R1 dan R2 yang dapat disimpulkan bahwa alur logika untuk modul input nilai balita yang dilakukan oleh perawat adalah efektif dan efisien. Sedangkan hasil Perhitungan Matriks normalisasi dan Nilai Utility pada Data delapan Balita menunjukan bahwa ada 5 balita memiliki keputusan rentan stunting dan 2 balita diputuskan Tidak Rentan Stunting dengan hasil nilai utility 0,23, hasil perhitungan dan pengagresian nilai utility diputusakan berdasarkan kategori Rentan apabila nilai utility > 0,5 dan Tidak Rentan apabila nilai utility < 0,5. Hasil Metode MAUT memungkinkan pemberian bobot pada setiap kriteria sesuai dengan relevansi dan kontribusinya terhadap kondisi stunting, sehingga menghasilkan evaluasi yang lebih objektif dan terstruktur dalam menilai kerentanan stunting.
Application of Analytic Network Process (ANP) Method in Determining Lecturer Performance Rating
Authors: Bambang Cahyono  , Muhammad Farman Andrijasa  , Tommy Bustomi  
Published: January 2025

The use of the Analytic Network Process (ANP) method in evaluating and ranking lecturer performance. ANP is a complex decision-making method that allows the assessment of various interrelated factors in a network. In the context of higher education, evaluating lecturer performance is very important because the quality of teaching and lecturers' contribution to research and scientific development has a direct impact on students' learning experience and institutional reputation. However, assessing lecturer performance is not an easy task because it involves a variety of complex and interrelated factors, such as teaching ability, research contribution, community service, and various other administrative aspects. The results of this study show that the ANP method has proven to be effective and successful in providing an objective, structured, and detailed description of lecturer performance. The results can be used to support decisions regarding awards, promotions, or training needed to achieve better overall performance with a 70% success rate in assessing lecturer performance.
Przełom w kształceniu plastycznym w środowisku lubelskim
Authors: Boguszewska Anna 
Published: January 2025

Na przełomie lat sześćdziesiątych i siedemdziesiątych XX w. na terenie kraju stopniowo wprowadzana była reforma systemu kształcenia nauczycieli umożliwiająca podnoszenia wykształcenia absolwentom wyższych szkół nauczycielskich do stopnia magistra. Rok 1973 stanowił punkt zwrotny w kształceniu nauczycieli. Zmiany były poparte opracowaniem raportu o stanie oświaty, postanowiono, że dokształcenie czynnych nauczycieli oraz kształcenie nauczycieli odbywać będzie się na poziomie akademickim, jako studia czteroletnie, jednokierunkowe o jednej specjalności przedmiotowej Zaistniała zatem możliwość kształcenia plastycznego nauczycieli na wyższym poziomie.
Celem niniejszego artykułu jest prezentacja początków działalności pracowników prowadzących kształcenie plastyczne w latach 1972-1976, czyli do momentu powołania Instytutu Wychowania Plastycznego na Uniwersytecie Marii Skłodowskiej-Curie w Lublinie. Za ważne uznano przedstawienie przełomowych okoliczności i znaczenia osób, ich decyzji, które przyczyniły się do odnowienia kształcenia plastycznego w Lublinie i formowania edukacji na poziomie wyższym. Podjęto próby rekonstrukcji biogramów osób mających kluczowe znaczenie w opisywanej materii. Wyniki analiz stanowią przyczynek do badań dokumentujących działania edukacyjne o charakterze artystycznym.
Biografie sprawców przemocy w kontekście relacji partnerskiej
Authors: Okoniewska Ewelina , Rębiś Daria 
Published: January 2025

Na podstawie biografii trzech sprawców przemocy przebywających w Areszcie Śledczym w Kielcach, przestawiono mechanizmy psychologiczne zachodzące pomiędzy ofiarą a sprawcą z perspektywy sprawcy. Sprawcy dzielili się swoimi doświadczeniami z przemocą z wczesnodziecięcego okresu życia, a także aktualnym rozumieniem i definiowaniem zjawiska przemocy w bliskich relacjach. W badaniu zastosowano wywiad narracyjny z elementami wywiadu ustrukturyzowanego oraz analizę dokumentów takich jak opinie sądowo-psychiatryczne sporządzone przez biegłych psychiatrów oraz sprawozdania z wywiadów środowiskowych autorstwa kuratorów zawodowych. Dzięki uzyskanym materiałom badawczym, do których należało przybliżenie historii swojego życia przez sprawcę przemocy, możliwe było nakreślenie obrazu narracyjnego sprawcy przemocy oraz określenie jego spójności ze stanem faktycznym. Uzyskano interesujące zależności związane z funkcjonowaniem sprawców przemocy w okresie dzieciństwa w rodzinie pochodzenia, a determinantą przebiegu funkcjonowania badanych oraz ich działaniem w czasie obecnym.
Prevalence and risk implications of Hepatitis B and C Viruses in a University community in Lagos, Nigeria
Authors: Ashaka Oluwaseyi , Ezeanya-Bakpa Chinyere , Olukoya Fehintiola , Awodesu Caleb , Abdulkadir Oluwademilade , Mbata Philip , Yangs Faithfulness , Orukotan Abimbola 
Published: January 2025

Objectives: This study determined the prevalence and risk implication of HBV and HCV in an asymptomatic university student group in Lagos, Nigeria.
Methods: A total of 90 students (38 males and 52 females) aged 16-25 years were enrolled in this study. Hepatitis B surface Antigen (HBsAg) and Hepatitis C Virus Antibodies (Anti-HCV) were detected using an ELISA microplate spectrophotometer at 450nm absorbance. Data on medical and socio-demographic information was obtained using pretested structured self-administered questionnaires.
Results: The overall seroprevalence for HBsAg and Anti-HCV was 2.2% respectively. Hepatitis B surface antigen was tested in 2 (5.3%) males only. Anti-HCV antibody was detected in both males and females with a prevalence of 1 (2.63%) and 1 (1.92%) respectively; with a male-to-female ratio of 1: 1. The age 19-21 years had HBsAg with a prevalence of 4.26%. The age group 16- 18 years and 19-21 years had an Anti-HCV prevalence of 3.57% and 2.12% respectively. Sexual intercourse, intravenous drug use, tattoos and body piercings were found to be associated (p < 0.05) with HBsAg and anti-HCV.
Conclusions: The prevalence of HBV and HCV among undergraduate university students in Lagos was 2.2% respectively. HBsAg and anti-HCV were detected among an asymptomatic group of students aged 16 -21 years with associated risk factors. This group must be considered as a high-risk group for viral hepatitis infection intervention.
A Cosmic Ray Acceleration Mechanism Based on Background Flow Velocity Inhomogeneities Yielding Power-law Spectra
Authors: Wang 王 J.-F. 俊芳 , Qin 秦 G. 刚 
Published: January 2025

Abstract
In astrophysics, one significant challenge lies in understanding the acceleration of cosmic rays, which leads to the occurrence of a power law. In this article, momentum transport generated by the combined effects of pitch-angle diffusion and background flow velocity inhomogeneities is proposed to obtain a cosmic rays acceleration mechanism, starting from the well-known focused transport equation describing particle diffusion and acceleration. The inhomogeneities of background flow velocity are ubiquitous in the astrophysical environment. The equation for the isotropic part of the distribution function of charged energetic particles is derived, and its solution is obtained, demonstrating the form of momentum power laws of cosmic rays. In addition, if it is assumed that cosmic rays penetrate compressive MHD waves or turbulence, for quasi-steady states, the spectral index δ of the momentum power law spectrum of cosmic rays is found to be in the range [−5, −3], which includes the observed power law indices of galactic cosmic rays. The results obtained in this article demonstrate that the mechanism proposed in this article, along with shock acceleration, may also contribute to the acceleration of galactic cosmic rays. Furthermore, when momentum convection effect and higher-order momentum derivative terms are considered, the indices of power laws should be smaller than −5. This may explain the power laws of solar energetic particle events.
Expanded Generalized Needlet Internal Linear Combination (eGNILC) Framework for the 21 cm Foreground Removal
Authors: Dai Wei-Ming , Ma Yin-Zhe 
Published: January 2025

Abstract
The Generalized Needlet Internal Linear Combination (GNILC) method is a nonparametric component separation algorithm to remove the foreground contamination of the 21 cm intensity mapping data. In this work, we perform the discrete cosine transform along the frequency axis in the expanded GNILC framework (denoted eGNILC), which helps reduce the power loss in low multipoles, and further demonstrates its performance. We also calculate the eGNILC bias to modify the criterion for determining the degrees of freedom (dof) of the foreground, and embed the robust principal component analysis in mixing matrix computation to obtain a blind component separation method. We find that the eGNILC bias is related to the averaged domain size and the dof of the foreground but not the underlying 21 cm signal. In the case of no beam effect, the eGNILC bias is negligible for simple power-law foregrounds outside the Galactic plane. We also examine the eGNILC performance in the SKA Phase-I in mid-frequency (SKA-MID) and Baryon Acoustic Oscillations from Integrated Neutral Gas Observations (BINGO) simulations. We show that if the adjacent frequency channels are not highly correlated, eGNILC can recover the underlying 21 cm signal with good accuracy. With the varying Airy-disk beam applied to both SKA-MID and BINGO, the power spectra of 21 cm can be effectively recovered at the multipoles ℓ ∈ [20, 250] and [20, 300], respectively. With no instrumental noise, the SKA-MID exhibits ≲20% power loss, and BINGO exhibits ~10% power loss. The varying Airy-disk beam only causes significant errors at large multipoles.
Improved Particle Spray Algorithm for Modeling Globular Cluster Streams
Authors: Chen Yingtian , Valluri Monica , Gnedin Oleg Y. , Ash Neil 
Published: January 2025

Abstract
Stellar streams that emerge from globular clusters (GCs) are thin stellar structures spread along the orbits of progenitor clusters. Numerical modeling of these streams is essential for understanding their interaction with the host galaxy's mass distribution. Traditional methods are either computationally expensive or oversimplified, motivating us to develop a fast and accurate approach using a particle spray algorithm. By conducting a series of N-body simulations of GCs orbiting a host galaxy, we find that the position and velocity distributions of newly escaped stream particles are consistent across various GC masses and orbital parameters. Based on these distributions, we develop a new algorithm that avoids computing the detailed internal cluster dynamics by directly drawing tracer particles from these distributions. This algorithm correctly reproduces the action space distribution of stream particles and achieves a 10% accuracy in stream morphology and velocities compared to N-body simulations. To facilitate broader use, we have implemented this algorithm in galactic dynamics codes agama, gala, galax, and galpy.