bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengembangan Best-Practices Pembelajaran Kompetensi Merancang Jaringan Akses Telekomunikasi Menggunakan Software Simulasi Opnet (Riverbed Academic Edition)
Authors: Fauzi Ahmad , Ridwan Taufik , Andrian Rian , Hikmawan Rizki 
Published: March 2024

Jaringan telekomunikasi merupakan bidang ilmu yang dinamis berkembang seiring perkembangan teknologinya. Dinamika ini juga berimplikasi terhadap pengembangan media dalam pembelajaran terkait hal ini, baik di perguruan tinggi, sekolah menengah kejuruan bahkan juga di lembaga pendidikan informal. Dengan demikian, perlu kiranya dibuatkan suatu pengamatan dan penelitian terhadap hal ini. Penelitian dikembangkan dengan mengadaptasi perkembangan teknologi jaringan telekomunikasi yang ada, kemudian memanfaatkannya untuk diterapkan dalam aplikasi simulasi. Aplikasi yang digunakan adalah Opnet (riverbed academic edition) yang dapat mensimulasikan jaringan telekomunikasi dengan mendekati kondisi aslinya. Hasilnya, diperoleh pengembangan media pembelajaran untuk merancang jaringan telekomunikasi.
Appropriate indicator of modeling error for threshold-based model selection in statistics-based ultrasound tissue characterization
Authors: Mori Shohei , Arakawa Mototaka , Yamaguchi Tadashi , Kanai Hiroshi , Hachiya Hiroyuki 
Published: March 2024

Abstract
Analysis of the envelope statistics of ultrasound echo signals contributes to quantitative tissue characterization in medical ultrasound. Many probability distribution model functions have been studied, and the model function that should be used for tissue characterization depends on the type of disease, even in the same organ. Thus, an appropriate model selection is important for an accurate diagnosis. In this study, we aimed to select a model using threshold processing for modeling errors instead of a simple selection by minimizing the modeling error. For this purpose, we compared several indicators of modeling errors using random number simulations, ultrasonic simulation, and phantom experiment. The results validated that the Mahalanobis distance of moments is an appropriate indicator because it enables the use of a constant threshold value, regardless of the type of model function and data length.
7.4 nm linewidth Pt nanowires by electron-beam lithography using non-chemically amplified positive-tone resist and post-exposure bake
Authors: Toyama Ryo , Majima Yutaka 
Published: March 2024

Abstract
7.4 nm linewidth Pt nanowires were demonstrated on SiO2/Si substrates via electron-beam lithography using a non-chemically amplified positive resist ZEP520A and post-exposure bake (PEB) treatment. The effect of the PEB treatment conditions on the nanowires’ characteristics was investigated. As the PEB temperature and time increased, a decrease in the mean linewidth and an improvement of the line-width (line-edge) roughness of the nanowires were observed. Pt nanowires with an ultrafine linewidth of 7.4 nm were successfully fabricated using the optimal condition of 100 °C for 2 min, verifying the effectiveness of PEB for fabricating sub-10 nm linewidth robust metal nanowires.
Continuously reconfigurable 100 GHz band phased array antenna with improved response time using a microfiber/liquid crystal composite
Authors: Lang Trong Nghia , Inoue Yo , Moritake Hiroshi 
Published: March 2024

Abstract
A 100 GHz band phased array antenna (PAA) based on a microfiber/liquid crystal composite is reported. This antenna features a simple and cost-effective design while delivering outstanding performance. Experimental results demonstrate that our PAA structure exhibits a high gain of nearly 11 dBi, continuous steering across a broad range of approximately 82.5°, and rapid switching times ranging from 80 to 260 ms.
Model-based predictive maintenance techniques applied to automotive industry
Authors: Longo Nicola , Serpi Valeria , Jacazio Giovanni , Sorli Massimo 
Published: March 2024

In automotive industry, and generally in the mass production world, maintenance is a very critical issue requiring special attention since every single stop causes a huge loss in term of item produced due to very small cycle time.
Basing on this observations, in the last years, a lot of efforts has been put in failure prevention and condition based maintenance; as an example in Fiat Chrysler Automobiles (FCA) the WCM (World Class Manufacturing) became part of its culture and the area dedicated to Professional Maintenance makes possible many step forwards. The ways WCM reaches the zero breakdown are Time Based Maintenance (TBM) and Condition Based Maintenance (CBM) but further improvements can be reached with focus on cost reduction and by optimizing the component usage without arriving to a fault.
In this paper, after an overview of maintenance techniques adopted in FCA plants worldwide, a model-based approach is suggested for a COMAU hemming tool named RHEvo. After the development of a simplified model, we try to estimate the actual status of internal components making use of Neural Network.
Focusing on the internal springs, the aging affects the elastic coefficient because of fatigue phenomena. As will be shown, under certain assumptions the cracks presence affects the nominal elastic coefficient; therefore, starting from the estimation coming from the Neural Network, it is possible to model an equivalent crack length. Finally, basing on stochastic crack growth model proposed by Yang and Manning an estimation of internal spring’s Remaining Useful Life Estimation (RULE) is calculated.
Multimorbidity in Atherosclerotic Cardiovascular Disease and Its Associations With Adverse Cardiovascular Events and Healthcare Costs: A Real-World Evidence Study
Authors: Dai Dingwei , Fernandes Joaquim , Sun Xiaowu , Lupton Laura , Payne Vaughn W. , Berk Alexandra 
Published: March 2024

Background: Atherosclerotic cardiovascular disease (ASCVD) remains the leading cause of mortality and disability in the United States and worldwide. Objective: To assess the multimorbidity burden and its associations with adverse cardiovascular events (ACE) and healthcare costs among patients with ASCVD. Methods: This is a retrospective observational cohort study using Aetna claims database. Patients with ASCVD were identified during the study period (1/1/2018–10/31/2021). The earliest ASCVD diagnosis date was identified as the index date. Qualified patients were ≥18 years of age and had ≥12 months of health plan enrollment before and after the index date. Comorbid conditions were assessed using all data available within 12 months prior to and including the index date. Association rule mining was applied to identify comorbid condition combinations. ACEs and healthcare costs were assessed using all data within 12 months after the index date. Multivariable generalized linear models were performed to examine the associations between multimorbidity and ACEs and healthcare costs. Results: Of 223 923 patients with ASCVD (mean [SD] age, 73.6 [10.7] years; 42.2% female), 98.5% had ≥2, and 80.2% had ≥5 comorbid conditions. The most common comorbid condition dyad was hypertension-hyperlipidemia (78.7%). The most common triad was hypertension–hyperlipidemia–pain disorders (61.1%). The most common quartet was hypertension–hyperlipidemia–pain disorders–diabetes (30.2%). The most common quintet was hypertension–hyperlipidemia–pain disorders–diabetes–obesity (16%). The most common sextet was hypertension–hyperlipidemia–pain disorders–diabetes–obesity–osteoarthritis (7.6%). The mean [SD] number of comorbid conditions was 7.1 [3.2]. The multimorbidity burden tended to increase in older age groups and was comparatively higher in females and in those with higher social vulnerability. The increased number of comorbid conditions was significantly associated with increased ACEs and increased healthcare costs. Discussion: Extremely prevalent multimorbidity should be considered in the context of clinical decision-making to optimize secondary prevention of ASCVD. Conclusions: Multimorbidity was extremely prevalent among patients with ASCVD. Multimorbidity patterns varied considerably across ASCVD patients and by age, gender, and social vulnerability status. Multimorbidity was strongly associated with ACEs and healthcare costs.
CULTURA E PRÁTICA DE LEITURA
Authors: Rangel Correia Germano , Fortuna Daniel Hilton , Sarmento dos Santos Ana Paula 
Published: March 2024

Este estudo centra-se na análise dos processos de leitura e aquisição de material bibliográfico por parte dos docentes das unidades de Ensino Superior na província do Namibe, destacando-
se a caraterização e medição das variáveis de leitura. Objetivando perceber, categorizar e classificar a qualidade e quantidade do que os docentes leem, recorremos à pesquisa quantitativa, a qual permitiu obter dados extensivos dos docentes e aferir a propensão à prática e ao hábito de leitura entre estes. Participaram da pesquisa 50 professores das quatro instituições de Ensino Superior da província – Faculdade de Ciências Sociais e Humanidades, da Academia de Pescas e Ciências do Mar, do Instituto Superior Politécnico e do Instituto Superior Politécnico Gregório Semedo. Os dados demonstram que a quantidade de livros que se lê e que se possui individualmente não obedece aos parâmetros exigidos para odesenvolvimento do ensino, pesquisa e extensão universitária, condicionando a aquisição de outras competências, como literacia científica.
Efektivitas Kebijakan Sosial dalam Mengurangi Ketimpangan Pendapatan dan Angka Kemiskinan
Authors: Sarjito Aris 
Published: March 2024

Penelitian ini menyelidiki faktor sosial ekonomi, aspek budaya dan kedaerahan, dinamika politik, dan tata kelola yang mempengaruhi efektivitas kebijakan sosial dalam mengurangi ketimpangan pendapatan dan angka kemiskinan di Indonesia.
Studi ini menggunakan jenis penelitian kualitatif dan data sekunder untuk menganalisis kebijakan sosial dan ketimpangan pendapatan di Indonesia.
Temuan dari penelitian menunjukkan bahwa faktor sosial ekonomi seperti pendidikan, kesempatan kerja, dan program perlindungan sosial sangat penting untuk mengurangi ketimpangan pendapatan dan angka kemiskinan di Indonesia. Selain itu, aspek budaya dan kewilayahan memainkan peran penting dalam membentuk implementasi dan efektivitas kebijakan sosial. Beragamnya praktik budaya dan kesenjangan regional mempengaruhi distribusi sumber daya dan keberhasilan penerapan kebijakan sosial.
Selain itu, dinamika politik dan tata kelola juga mempengaruhi efektivitas kebijakan sosial. Iklim politik, tingkat korupsi, dan akuntabilitas pemerintah mempunyai implikasi terhadap alokasi sumber daya dan pelaksanaan program pengentasan kemiskinan.
Penelitian ini menggarisbawahi pentingnya mempertimbangkan faktor sosial-ekonomi, budaya, regional, dan politik ketika menilai efektivitas kebijakan sosial dalam mengurangi ketimpangan pendapatan dan kemiskinan di Indonesia.

Kata kunci:
angka kemiskinan; dinamika politik; faktor sosial ekonomi; kebijakan sosial; ketimpangan pendapatan
SANKSI PIDANA MENURUT PASAL 107 UNDANG-UNDANG NOMOR 7 TAHUN 2014 TENTANG PERDAGANGAN BAGI PENIMBUN MASKER DI MASA PANDEMI COVID-19
Authors: Yulianto Irwan 
Published: March 2024

Penimbunan adalah perbuatan yang mengumpulkan barang-barang sehingga barang tersebut menjadi langkah di pasaran kemudian menjualnya dengan harga yang sangat tinggi sehingga warga setempat. sulit untuk menjangkaunya. Hal ini bisa dipahami bahwa apabila tersedia sedikit barang maka harga akan lebih mahal. Apalagi jika barang yang ditimbun itu merupakan kebutuhan primer manusia seperti bahan makanan pokok. Penelitian yang digunakan adalah jenis penelitian hukum atau penelitian kepustakaan. Penelitian Kepustakaan, yaitu penelitian yang dilakukan dengan cara meneliti bahan pustaka atau bahan sekunder yang terdiri dari bahan hukum primer, bahan hukum sekunder dan bahan hukum tersier. Dilihat dari bentuknya penelitian ini termasuk penelitian deskriptif. Penelitian ini bersifat preskriptif, penulis hendak memberikan perskripsi terhadap prinsip hukum perdagangan. Berdasarkan uraian latar belakang dan pembahasan penelitian ini, maka dapat diambil kesimpulan bahwa Dalam hal pemberian sanksi untuk para pelaku penimbun masker di masa pandemi covid-19, perbuatan tersebut melanggar atau menyalahi ketentuan Pasal 29 Undang-Undang Nomor 7 Tahun 2014 tentang Perdagangan. Larangan ini dimaksudkan untuk menghindari adanya penimbunan barang yang akan menyulitkan masyarakat dalam memperoleh ba-rang berkebutuhan pokok. Penerapan Undang-Undang Nomor 7 Tahun 2014 Tentang Perdagangan,Pasal 107 Pelaku Usaha yang menyimpan Barang kebutuhan pokok dan/atau Barang penting dalam jumlah dan waktu tertentu pada saat terjadi kelangkaan Barang, gejolak harga, dan/atau hambatan lalu lintas Perdagangan Barang sebagaimana dimaksud dalam Pasal 29 ayat (1) dipidana dengan pidana penjara paling lama 5 (lima) tahun dan/atau pidana denda paling banyak Rp50.000.000.000,00 (lima puluh miliar rupiah).
DAMPAK GAYA KEPEMIMPINAN DAN MOTIVASI KERJA TERHADAP KINERJA PEGAWAI PADA PT PEGADAIAN CABANG KEUTAPANG ACEH BESAR
Authors: Yusuf Yuslaidar , Ariyanto Agus , Fadhil Muhammad 
Published: March 2024

Tujuan dalam penelitian ini adalah untuk mengetahui dan menganalisis dampak gaya kepemimpinan dan motivasi kerja terhadap kinerja pegawai pada PT Pegadaian Cabang Keutapang, Aceh Besar. Jumlah sampel penelitian ini sebanyak 32 responden Data penelitian dikumpulkan melalui kuisioner, dan studi dokumentasi. Pengujian hipotesis menggunakan analisis regresi linier berganda, uji F dan uji t dimaksud untuk mengetahui secara simultan dan secara parsial pengaruh variabel independen terhadap variabel dependen pada tingkat kepercayaan 95% (α = 0,05). Hasil penelitian berdasarkan uji simultan menunjukan bahwa variabel Gaya kepemimpinan dan Motivasi Kerja berpengaruh signifikan terhadap Kinerja Pegawai PT Pegadaian di Cabang Keutapang, Aceh Besar. Sedangkan secara parsial variabel Gaya kepemimpinan dan Motivasi Kerja berpengaruh signifikan terhadap Kinerja Pegawai PT Pegadaian Cabang Keutapang, Aceh Besar dan variabel Gaya kepemimpinan mempunyai pengaruh dominan dalam meningkatkan Kinerja Pegawai PT Pegadaian Cabang Keutapang, Aceh Besar.
Control del mallado con FEM para caracterizar una junta mecánica en aplicaciones de investigación y prototipaje
Authors: González-Sosa Jesús Vicente , Ávila-Soler Enrique 
Published: March 2024

Una de las características clave de los sellos mecánicos es lograr una estanqueidad efectiva entre dos piezas mecánicas para evitar el desplazamiento y las fugas de refrigerante en aplicaciones industriales. Actualmente la mayoría de estos elementos se producen utilizando neopreno, cartón comprimido, papel alquitranado, grafito laminado, por lo que buscamos producirlos utilizando materiales ABS y PLA. Para el diseño se utilizó software CAD con licencia educativa destinada a educadores e investigadores, posteriormente se realiza un análisis de elementos finitos según las especificaciones del producto. En este sentido, se ha identificado la importancia del FEM como herramienta de evaluación en el contexto de esta tendencia de utilizar tecnologías innovadoras para la investigación. Como parte de los resultados, los datos obtenidos permiten seleccionar tanto las variables como las propiedades físicas de la biela y pueden ser utilizados para desarrollar proyectos y estudios de esta naturaleza aplicables en casos de estudio relacionados con la Ingeniería mecánica, mecatrónica, industrial y electrónica. Finalmente, las variables Factor de Seguridad (FS), Von Mises Stress (VM) y YZ Stress, se analizan después de la simulación mediante FEM, proporcionando un rango de valores para su uso en aplicaciones de ingeniería con diferentes técnicas en las que se utilizan bielas, FS [ 0,55, 12,26], VM [1,63, 36,45], YZ [-1,36, 10,13]. En cuanto a los demás resultados presentados en este estudio, el coeficiente de correlación se utiliza como parte estadística con gráficos para evaluar la simulación, la dependencia de variables y parámetros relevantes para el estudio de caso, por lo que se observó una fuerte relación entre las variables; esfuerzo plano, deformación, desplazamiento y el esfuerzo de Von Mises, cuyos valores oscilan entre 0,87 y 0,99, mostrando una fuerte relación entre estas variables y, para las demás, se debe considerar mejorar la relación y aumentar el coeficiente.
Outflows Driven from a Magnetic Pseudodisk
Authors: Basu Shantanu , Sharkawi Mahmoud , Machida Masahiro N. 
Published: March 2024

Abstract
Outflows play a pivotal role in star formation as one of its most visible markers and a means of transporting mass, momentum, and angular momentum from the infalling gas into the surrounding molecular cloud. Their wide reach (at least thousands of astrnomical units) is a contrast to typical disk sizes (∼10–100 au). We employ high-resolution three-dimensional nested-grid nonideal magnetohydrodynamic (MHD) simulations to study outflow properties in the Class 0 phase. We find that no disk wind is driven from the extended centrifugal disk that has weak magnetic coupling. The low-velocity winds emerge instead from the infalling magnetic pseudodisk. Much of the disk actually experiences an infall of matter rather than outflowing gas. Some of the pseudodisk wind (PD-wind) moves inward to regions above the disk and either falls onto the disk or proceeds upward. The upward flow gives the impression of a disk wind above a certain height even if the gas is originally emerging from the pseudodisk. The PD-wind has the strongest flow coming from a disk interaction zone that lies just outside the disk and is an interface between the inwardly advected magnetic field of the pseudodisk and the outwardly diffusing magnetic field of the disk. The low-velocity wind exhibits the features of a flow driven by the magnetic pressure gradient force in some regions and those of a magnetocentrifugal wind in other regions. We interpret the structure and dynamics of the outflow zone in terms of the basic physics of gravity, angular momentum, magnetic fields, and nonideal MHD.
Proposed Resolution to the Solar Open Magnetic Flux Problem
Authors: Arge C. Nick , Leisner Andrew , Antiochos Spiro K. , Wallace Samantha , Henney Carl J. 
Published: March 2024

Abstract
The solar magnetic fields emerging from the photosphere into the chromosphere and corona are comprised of a combination of closed (field lines with both ends rooted at the Sun) and open (field lines with only one end at the Sun) fields. Since the early 2000s, the magnitude of total unsigned open magnetic flux estimated by coronal models has been in significant disagreement with in situ spacecraft observations, especially during solar maximum. Estimates of total open unsigned magnetic flux using coronal hole observations (e.g., using extreme ultraviolet or helium (He) I) are in general, in average agreement with the coronal model results and thus show similar disagreements with in situ observations. This paper provides a brief overview of the problem, summarizes the proposed explanations for the discrepancies, and presents results that strongly support the explanation that the discrepancy is due to dynamics at the open-closed boundary. These results are derived from the determination of the total unsigned open magnetic flux, utilizing the Wang–Sheeley–Arge model at a particular spatial resolution and different field-line tracing methods. One of these methods produces excellent agreement with in situ observations. Our results imply that strong magnetic fields in close proximity to active regions and residing near the boundaries of mid-latitude coronal holes are the primary source of the missing open flux. Furthermore, the results outlined here resolve many of the seemingly contradictory facts that have made the open-flux problem so difficult.
Exploring Spatial and Temporal Patterns in the Debrecen Solar Faculae Database: Part I
Authors: Elek Anett , Korsós Marianna B. , Dikpati Mausumi , Gyenge Norbert G. , Belucz Bernadett , Erdélyi Robertus 
Published: March 2024

Abstract
Photospheric faculae are markers of the solar magnetic field, appearing as bright regions along the edges of granules on the Sun’s surface. Using data from the Debrecen Solar Faculae Database, we investigated the spatiotemporal distribution of photospheric faculae between 2010 May 1 and 2014 December 31 and found the following. (i) At lower latitudes, there is an enhanced abundance of faculae appearing as stripes at given Carrington longitudes, which are interpreted as indicative of the presence of active longitudes. (ii) At higher latitudes, we identified so-called crisscross patterns of facular appearance. These patterns are likely the result of faculae in regions situated along the boundaries of supergranules. Last but not least, (iii) various periods of oscillatory phenomena were identified in this facular data set, including a longer periodic range consistent with the quasi-biennial oscillations and shorter ones with periods of 4–12 days. Our findings are supported by the visualization of a simple heuristic thought experiment and more complex dynamo simulations, strengthening the proposed interpretation of the three observed solar phenomena reported.
Magnetic Field Strength Effects on Nucleosynthesis from Neutron Star Merger Outflows
Authors: Lund Kelsey A. , McLaughlin Gail C. , Miller Jonah M. , Mumpower Matthew R. 
Published: March 2024

Abstract
Magnetohydrodynamic turbulence drives the central engine of post-merger remnants, potentially powering both a nucleosynthetically active disk wind and the relativistic jet behind a short gamma-ray burst. We explore the impact of the magnetic field on this engine by simulating three post-merger black hole accretion disks using general relativistic magnetohydrodynamics with Monte Carlo neutrino transport, in each case varying the initial magnetic field strength. We find increasing ejecta masses associated with increasing magnetic field strength. We find that a fairly robust main r-process pattern is produced in all three cases, scaled by the ejected mass. Changing the initial magnetic field strength has a considerable effect on the geometry of the outflow and hints at complex central engine dynamics influencing lanthanide outflows. We find that actinide production is especially sensitive to magnetic field strength, with the overall actinide mass fraction calculated at 1 Gyr post-merger increasing by more than a factor of 6 with a tenfold increase in magnetic field strength. This hints at a possible connection to the variability in actinide enhancements exhibited by metal-poor, r-process-enhanced stars.
Low-amplitude Solar-like Oscillations in the K5 V Star ϵ Indi A
Authors: Lundkvist Mia S. , Kjeldsen Hans , Bedding Timothy R. , McCaughrean Mark J. , Butler R. Paul , Slumstrup Ditte , Campante Tiago L. , Aerts Conny , Arentoft Torben , Bruntt Hans , Cardoso Cátia V. , Carrier Fabien , Close Laird M. , da Silva João Gomes , Kallinger Thomas , King Robert R. , Li 李 Yaguang 亚光 , Murphy Simon J. , Rørsted Jakob L. , Stello Dennis 
Published: March 2024

Abstract
We have detected solar-like oscillations in the mid-K-dwarf ϵ Indi A, making it the coolest dwarf to have measured oscillations. The star is noteworthy for harboring a pair of brown dwarf companions and a Jupiter-type planet. We observed ϵ Indi A during two radial velocity campaigns, using the high-resolution spectrographs HARPS (2011) and UVES (2021). Weighting the time series, we computed the power spectra and established the detection of solar-like oscillations with a power excess located at 5265 ± 110 μHz—the highest frequency solar-like oscillations so far measured in any star. The measurement of the center of the power excess allows us to compute a stellar mass of 0.782 ± 0.023 M
⊙ based on scaling relations and a known radius from interferometry. We also determine the amplitude of the peak power and note that there is a slight difference between the two observing campaigns, indicating a varying activity level. Overall, this work confirms that low-amplitude solar-like oscillations can be detected in mid-K-type stars in radial velocity measurements obtained with high-precision spectrographs.