bluuebunny/crossref_metadata_2025 huggingface dataset:
Recent Trends in Wearable Electronic Textiles (e-Textiles): A Mini Review
Authors: Naeem Muhammad Awais , Javed Kashif , Fraz Ahmad , Anwar Faiza
Published: July 2023

Wearable electronic textiles (e-textiles) have the ability to sense, respond, and adjust in multiple environmental stimuli, which can interact with the human brain's capability for cognition, reasoning, and activation. Moreover, they have the ability to generate and store energy, keep track of the wearer's health, and react to varying situations. Conductive polymers, metal-wrapped yarns, as well as, carbon nanotubes with silver, copper, and gold nanoparticles are used in a variety of yarn structures to design circuits, switches, and fabrics directly. Knitting, stitching, embroidery, and other integration techniques are used to combine electronic components and electrical interconnects to develop flexible electronic clothing and smart wearables. For this purpose, controlled sensors, actuators, conductive embroidered or printed fabric, planer yarn, data transfer devices, conductive inks, electromagnetic shielding, power supply, and other components are incorporated in e-textiles design. Despite the progress made so far, wearable e-textiles still, lack the required performance and device features along with the issues related to complex fabrication techniques, end-of-life processing and sustainability. Hence, this review aims to discuss the recent developments, which address the future challenges concerning electronic (e-textiles).
Is gastrulation the most important time in your life?
Authors: Linde Marta
Published: July 2023

Gastrulation is considered a fundamental process of metazoan embryogenesis, as the layers that give place to all body parts are laid down by extensive cell movements and cell differentiation. It is commonly thought that gastrulation establishes the entire body axis. The discovery of neuromesodermal progenitors is challenging this view. These cells keep their pluripotency after gastrulation and they are able to differentiate into ectoderm (neural tube) and mesoderm derivatives (paraxial mesoderm, notochord) directly, without passing through a germ layer intermediate. They contribute to the elongation of the body axis and could play a key role in the evolution of the chordate body plan.
Developing a Novel Mobile Phase to Separate Polar and Nonpolar Leaf Pigments of Copperleaf (Acalypha wilkesiana) Using Thin Layer Chromatography
Authors: Adiga Vishwajit , Chandra P Samanyu , Venkatesh Kikkeri Varnika , Praveen Chinmaya , Senapati Subhadip
Published: July 2023

Plant species contain several pigments that are responsible for different functions. Depending on the structures of these pigments, some of these pigments are nonpolar (chlorophyll-a, chlorophyll-b, β-carotene, xanthophyll, etc.), whereas some are polar (anthocyanins), thus making them hydrophobic or hydrophilic, respectively. To understand more about the structure and properties of these pigments, it is essential to isolate them in pure forms. So far, planar chromatographic techniques have been mostly employed to separate nonpolar pigments from one another, but not from the polar ones. Here we are reporting a novel solvent composition (60% n-hexane, 10% ethyl acetate, 10% acetone, 10% isopropyl alcohol, 10% water), that can be used to separate the nonpolar pigments from the polar ones using thin-layer chromatography (TLC). This solvent composition enabled us to develop a chromatogram, where spots were distinctly separated, concentrated, and could easily be isolated. The pigments were identified from their colors and Rf (retardation factor) values, followed by characterization using Ultraviolet-visible (UV-Vis) spectra.
Hybrid Approach - A 21st Century Skill in Science Education
Authors: B. G. Vismitha , Sharma Anamika
Published: July 2023

_Research Objectives_: Students showed a fair amount of interest in discussing the topics of their choice. However, in the science class they seem to lose interest as it doesn’t match with their interest, and it slowly becomes a heavy subject as per school curriculum. The idea behind such activity was to improve their self-confidence and to eliminate the fear of the science subject.

_Material and Methods_: Students were allowed to prepare a formal presentation to discuss their choice of subject (science related). This was followed by the introduction of flipped classrooms. Concept of matter was introduced to students via flipped classroom approach. The results were analysed using 5-point rubric.

_Result and Discussion_: In this work, a study was conducted wherein the students presented the topic of their choice which was followed by Q&A sessions. Students were quite through with their topic of interest and presentation in the classroom allowed them to share their ideas and thoughts within the classroom. This increase in confidence within students and presentation approach was extrapolated to flipped classrooms to cover the concept of “Matter” which is part of the school curriculum.

_Conclusion_: Through this planned activity, the interaction among students was quite extraordinary and hence helped in eliminating their hesitance to some extent. As facilitators we got ourselves involved in the discussion and their promptness in answering depicted their interest in learning the Matter module as part of their science curriculum.
Zero-Divisor Graphs of ℤ_n, their products and D_n
Authors: Acharyya Amrita , Czajkowski Robinson
Published: July 2023

This paper is an endeavor to discuss some properties of zero-divisor graphs of the ring \(\mathbb{Z}_n\), the ring of integers modulo \(n\). The zero divisor graph of a commutative ring \(R\), is an undirected graph whose vertices are the nonzero zero-divisors of \(R\), where two distinct vertices are adjacent if their product is zero. The zero-divisor graph of \(R\) is denoted by \(\Gamma(R)\). We discussed \(\Gamma(\mathbb{Z}_n)\)'s by the attributes of completeness, k-partite structure, complete k-partite structure, regularity, chordality, \(\gamma - \beta\) perfectness, simplicial vertices. The clique number for arbitrary \(\Gamma(\mathbb{Z}_n)\) was also found. This work also explores related attributes of finite products \(\Gamma(\mathbb{Z}_{n_1}\times\cdots\times\mathbb{Z}_{n_k})\), seeking to extend certain results to the product rings. We find all \(\Gamma(\mathbb{Z}_{n_1}\times\cdots\times\mathbb{Z}_{n_k})\) that are perfect. Likewise, a lower bound of clique number of \(\Gamma(\mathbb{Z}_m\times\mathbb{Z}_n)\) was found. Later, in this paper, we discuss some properties of the zero divisor graph of the poset \(D_n\), the set of positive divisors of a positive integer \(n\) partially ordered by divisibility.
Ciudad de invierno (1979) en la sociología de la literatura
Authors: Pilca Patricio
Published: July 2023

Este artículo pretende discutir la producción literaria del país en la década de los ochenta, especialmente reflexionar alrededor de la noción de campo literario; para esto se recurre a los aportes del sociólogo Pierre Bourdieu. Es decir, se intenta argumentar los alcances y limitaciones del campo literario ecuatoriano. A partir de esto, en un segundo momento, se analiza una de las obras más relevantes en esta década, Ciudad de invierno, de Abdón Ubidia (1979). Esta obra deja ver pliegues novedosos en la narrativa ecuatoriana; por un lado, se narra la ciudad moderna, y, por otro, la trama y vida de personajes se mueven en una dimensión distinta a la narrativa anterior.
Labor de duelo, poemario de María Paulina Briones
Authors: Báez Meza Marcelo
Published: July 2023

Labor de duelo, poemario de María Paulina Briones
ВОЛОНТЕРСТВО, ЯК ПРОВІДНЕ ЯВИЩЕ В ПРОЦЕСІ ЗАБЕЗПЕЧЕННЯ СОЦІАЛЬНОЇ БЕЗПЕКИ УКРАЇНИ: ЕВОЛЮЦІЯ, ЗНАЧЕННЯ, СУЧАСНИЙ СТАН ТА ПРОБЛЕМАТИКА
Authors: Руденко Валентина
Published: July 2023

У статті розглядається роль волонтерства у розвитку соціальної безпеки України та проблеми, з якими стикаються волонтери з боку держави та суспільства. Наголошено на значенні волонтерського руху як інструменту об'єднання країни, сприяння соціальній єдності та розвитку громадянської свідомості. Зазначено, що волонтерство стало особливо актуальним та життєво необхідним явищем під час повномасштабного вторгнення, адже де воно відіграє важливу роль у підтримці та наданні допомоги військовим, постраждалим, а також у забезпеченні соціальної інтеграції вразливих груп. Також обговорюється внутрішнє переміщення людей внаслідок конфлікту і важлива роль волонтерів у наданні допомоги та реінтеграції цих осіб. Запропоновано ряд заходів для полегшення проблем волонтерства в Україні, включаючи покращення державної підтримки, розвиток професійного розвитку волонтерів, створення механізмів співпраці та підвищення свідомості суспільства. Зазначено, що волонтерство має велике значення для розвитку соціальної безпеки, економічного розвитку, підтримки вразливих груп населення та підвищення соціально-економічного благополуччя в Україні.
Piazza Senegal, Firenze 1990. Uno sciopero della fame tra storia e memoria
Authors: Bianchi Roberto
Published: July 2023

Nel 1990 la comunità senegalese di Firenze fu protagonista di una protesta per reagire a una serie di manifestazioni e violenze di tipo razzista, per contrastare provvedimenti decisi dalle autorità locali e centrali, per rispondere alle modalità di presentazione dell'immigrazione straniera fornite dai mass media. La lotta si realizzò con uno sciopero della fame in piazza, nei pressi del Duomo, incontrò il sostegno di una parte consistente della città, ebbe ampia risonanza e si concluse con una legittimazione politica dei suoi promotori. La protesta e il suo esito anticiparono temi che avrebbero assunto un rilievo notevole nel XXI secolo, ma fu presto dimenticata. L'articolo ricostruisce le premesse e il contesto in cui avvenne lo sciopero della fame, e propone una narrazione della protesta gettando uno sguardo all'interno della piazza, attraverso l'uso di fonti edite e inedite, intrecciandole con testi e documenti raccolti o prodotti dall'autore nel 1990
Phylogenetic study of Elona quimperiana (Gastropoda: Elonidae): identification of a new haplogroup
Authors: Somoza-Valdeolmillos E. , Gómez-Moliner B. J. , Caro A. , Chueca L. J. , Puente A. I. , Madeira M. J.
Published: July 2023

The land snail Elona quimperiana is listed in annexes II and IV of the Europe Habitats Directive. In this study, phylogenetic relationships between populations of this protected species from its whole distribution range were reconstructed based on the sequencing of two mtDNA gene fragments (COI and 16S rRNA) and one nDNA gene fragment (ITS2). Haplotype networks were also generated for the COI and 16S rRNA gene fragments. Results yielded three main intraspecific phylogroups, here designated as the lineages Brittany-Spain, Basque, and Navarre-Rioja. This last lineage had not been identified previously. Genetic distances between the three main phylogroups suggest they could have originated by allopatric fragmentation before the Last Glacial Maximum, and then separately evolved in three refugia in the Iberian Peninsula. We here propose that each phylogroup is considered an Evolutionarily Significant Unit. Through extended sampling, we were able to delimit the geographic distribution of all three lineages. Our genetic results support post-glacial colonization of this species from the north-eastern Iberian Peninsula to Brittany in NW-France as proposed previously, and rule out its recent anthropic introduction.
A spatial tool to identify potential conflict hotspots for the European ground squirrel in agricultural land
Authors: Poledník L. , Mateos-González F. , Poledníková, K. K.
Published: July 2023

Some of the hardest challenges in conservation are those situations which occur when endangered species' and human interests collide. The European ground squirrel Spermophilus citellus, a mainly herbivorous rodent which feeds on agricultural crops when available, is an endangered species facing extinction in several countries. Sustainable conservation of the species can only be achieved in collaboration with all stakeholders, particularly farmers. However, in the past, this species was considered a pest, and farmers actively persecuted it, using invasive methods such as trapping and poisoning. In this situation, early monitoring and prevention are the best tools to minimise and mitigate potential conflicts. We developed a risk model to assess the potential for crop damages by ground squirrels, using data from three different locations with agricultural mosaic landscape in the Czech Republic. Our model is based on four parameters: occurrence and density of ground squirrels, migration potential, and type of habitat. The resulting model provides a graphical map of the local potential risk of crop damage. These maps can complement the regular monitoring of the European ground squirrel and its potential effects on agriculture, aiding the implementation of proactive management strategies to prevent conflicts and support the sustainable conservation of the species.
Neural Network Calibration of Star Trackers
Authors: Khodabakhshian Shaghayegh , Enright John
Published: July 2023

To maintain ideal performance, star trackers must be able to predict the direction of incident starlight to within a few arcseconds across the entire instrument field of view (FOV). Parametric camera models are commonly used to calculate star vectors from camera images and correct for aberrations in the instrument optics. This conventional approach can be quite effective, but systematic errors can be difficult to eliminate, and proper selection of calibration basis functions is often difficult to determine. This study explores using supervised machine learning (ML) approaches such as radial basis function networks (RBFNs) and support vector machines (SVMs) for star tracker calibration as an alternative to conventional aberration formulations. These networks can be formulated as either a correction to a low-order camera model or a complete replacement for the whole model. When applied to the instrument calibration of a dozen Sinclair Interplanetary ST-16RT2 sensors, the RBFN formulation offers 27% reduction in the calibration residuals and almost 12% reduction in the validation residuals over conventional formulations.
Autonomous optical navigation using nanosatellite-class instruments: a Mars approach case study
Authors: Enright John , Jovanovic Ilija , Kazemi Laila , Zhang Harry , Dzamba Tom
Published: July 2023

Star trackers must be calibrated prior to flight so that they can make accurate measurements of star positions within the instrument field of view. This calibration is usually performed in atmosphere and after the sensor is launched; it is not uncommon to observe a small shift in some of the calibration parameters. In this paper, we explore several autonomous strategies for on-orbit recalibration of star trackers. We present an improved version of a popular camera model, develop optimizations to identify optimal parameter values, and validate performance using the data collected from on-orbit sensors. When compared with human-mediated batch processing, autonomous methods have comparable reliability, performance, and commissioning time. The sensor datasets used in this paper come from six Sinclair Interplanetary ST-16 star trackers launched between November 2013 and July 2014. Both batch and autonomous approaches to on-orbit calibration yield improvements in measurement availability as well as a 20%-80% reduction in residual geometric error compared to ground calibrations.
Into Darkness: Visual Navigation Based on a Lidar-Intensity-Image Pipeline
Authors: Barfoot Timothy D. , McManus Colin , Anderson Sean , Dong Hang , Beerepoot Erik , Tong Chi Hay , Furgale Paul , Gammell Jonathan D. , Enright John
Published: July 2023

Visual navigation of mobile robots has become a core capability that enables many interesting applications from planetary exploration to self-driving cars. While systems built on passive cameras have been shown to be robust in well-lit scenes, they cannot handle the range of conditions associated with a full diurnal cycle. Lidar, which is fairly invariant to ambient lighting conditions, offers one possible remedy to this problem. In this paper, we describe a visual navigation pipeline that exploits lidar’s ability to measure both range and intensity (a.k.a., reflectance) information. In particular, we use lidar intensity images (from a scanning-laser rangefinder) to carry out tasks such as visual odometry (VO) and visual teach and repeat (VT&R) in realtime, from full-light to full-dark conditions. This lighting invariance comes at the price of coping with motion distortion, owing to the scanning-while-moving nature of laser-based imagers. We present our results and lessons learned from the last few years of research in this area.
Pengembangan Instrumen Evaluasi Berbasis Keterampilan Pemecahan Masalah pada Materi Pencemaran Lingkungan
Authors: Ulhaq Riza , Widarta Fajar Okta , Fathiya Nir
Published: July 2023

Tujuan dari penelitian ini adalah untuk mengembangkan instrumen evaluasi keterampilan pemecahan masalah pada peserta didik kelas VII Madrasah Tsanawiyah. Penelitian ini adalah research and development dengan menerapkan model Borg dan Gall yang dimodifikasi oleh sugiyono, dilaksanakan di MTs kota Banda Aceh pada semester genap tahun ajaran 2021/2022, jumlah subjek penelitian sebanyak 60 peserta didik. Pengembangan instrumen disesuaikan dengan materi dan indikator pembelajaran materi pencemaran lingkungan. Instrumen berbentuk tes uraian yang berisi isu dan masalah pencemaran lingkungan yang terdapat disekitar peserta didik, meliputi:  memahami masalah, merencanakan penyelesaian masalah, menyelesaikan masalah, dan mengevaluasi. Instrumen yang telah disusun selanjutnya dilakukan validasi ahli (media dan konten). Hasil validasi ahli diperoleh skor 79,5%, instrumen yang dikembangkan dikategorikan cukup layak dengan sedikit perbaikan. Setelah memperbaiki instrumen berdasarkan masukan dan saran validator selanjutnya dilakukan uji coba lapangan untuk mengetahui validitas dan reabilitas instrumen. Hasil analisis uji lapangan  (validitas dan reablitas) instrumen diperoleh sebanyak 18 dari 20 item instrumen valid dengan nilai reabilitas 0,69  (kategori tinggi).
PENGARUH PEMBERIAN TEPUNG LIMBAH IKAN NILA (OREOCHROMIS NILOTICUS) TERHADAP PERTUMBUHAN BOBOT ITIK PEKING Anas Platyrhynchos Domestica L.
Authors: Chairunisah Tya , Elfrida Elfrida , Pandia Ekariana S
Published: July 2023

Itik (Anas platyrhynchos domestika L.) termasuk kedalam golongan itik tipe pedaging, yaitu jenis itik yang memiliki produktivitas tinggi terhadap pembentukan daging (karkas), sedangkan produktivitas telurnya rendah. Secara performans itik peking berbadan besar, dagingnya tebal, dan memiliki daya alih pakan menjadi protein (daging) tinggi dari pada menjadi produk protein berupa telur. Di indonesia itik peking sudah dikenal sejak 25 tahun silam. Tujuan penelitian ini untuk mengetahui pengaruh pemberian tepung limbah ikan nila (Oreochromis niloticus) terhadap pertumbuhan bobot itik peking (Anas platyrhynchos domestica L.). Metode yang dilakukan adalah penelitian eksperimen dengan menggunakan teknik Rancangan Acak Lengkap (RAL) non faktorial yang terdiri dari 4 perlakuan (P0,P1,P2,P3) dengan 6 pengulangan. Hasil penelitian menunjukkan bahwa pertumbuhan itik yang paling tinggi terdapat pada perlakuan P3 dengan pemberian tepung limbah ikan nila sebesar 75% sedangkan pertumbuhan itik terendah terdapat pada perlakuan kontrol P0 tanpa pemberian tepung limbah ikan nila (Oreochromis niloticus). Hasil uji ANAVA yaitu Fhitung > Ftabel yaitu 50,95 > 3,10 pada taraf kepercayaan 5%. Berdasarkan penelitian ini dapat disimpulkan bahawa pemberian tepung limbah ikan nila berpengaruh terhadap pertumbuhan bobot itik peking (Anas platyrhynchos domestica L).
IMPLEMENTASI FLIPPED CLASSROOM TERHADAP PEMAHAMAN KONSEP DAN MOTIVASI BELAJAR MAHASISWA PADA MATERI METABOLISME LIPID
Authors: Muhammad Nazar , M Nur Yaumil Istiqlal , Widarta Fajar Okta
Published: July 2023

Penelitian ini bertujuan mengidentifikasi perbedaan pemahaman konsep, motivasi belajar, dan respon   mahasiswa yang mengikuti pembelajaran menggunakan Flipped Classroom  dengan mahasiswa yang mengikuti proses pembelajaran secara konvensioal  pada materi metabolisme lipid di Program Studi Pendidikan Biologi FKIP Universitas Syiah Kuala. Penelitian ini merupakan jenis  penelitian quasi experimental desain model Post Test Only Control Group Design. Populasi mencakup seluruh mahasiswa Program Studi Pendidikan Biologi FKIP Universitas Syiah Kuala yang memprogram mata kuliah biokimia pada semester genap tahun ajaran 2021/2022. Sebagai kelas sampel adalah mahasiswa unit 01 sebagai kelas kontrol dan mahasiswa unit 02 sebagai kelas eksperimen. Data pemahaman konsep diperoleh dari hasil tes sumatif berbentuk soal  multiple choice sedangkan data  peningkatan motivasi belajar diperoleh dari kuisioner untuk mengidentifikasi motivasi belajar  mahasiswa. Data pemahaman konsep  dianalisis melalui  uji normalitas, uji homogenitas, dan uji- t. Hasil penelitian menunjukkan bahwa tingkat  pemahaman konsep mahasiswa kelas eksperimen lebih tinggi dari kelas kontrol. Hasil  uji-t diperoleh nilai  signifikansi 0.000 sehingga  H1 diterima. Motivasi belajar siswa yang menggunakan Flipped Classroom juga terlihat lebih besar berdasarkan rata-rata motivasi belajar kelas eksperimen.
IDENTIFIKASI MISKONSEPSI BUKU TEKS BIOLOGI KELAS XI DAN HUBUNGANNYA TERHADAP MINAT BACA SISWA SMAN DI KOTA BANDA ACEH
Authors: Safrida
Published: July 2023

ABSTRAK

 

Penelitian ini bertujuan untuk mengidentifikasi miskonsepsi yang disebabkan oleh kesalahan ejaan pada buku teks biologi kelas XI dan untuk mengetahui hubungannya dengan minat baca siswa SMAN kota Banda Aceh. Metode penelitian yang digunakan dalam penelitian ini adalah metode penelitian deskriptif. Objek dalam penelitian ini adalah buku tesk Biologi kelas XI yang paling dominan digunakan siswa dan siswa kelas XI SMAN di Kota Banda Aceh. Instrumen yang digunakan dalam penelitian ini adalah lembar observasi dan angket Berdasarkan hasil analisis data diketahui bahwa terdapat miskonsepsi yang disebabkan oleh kesalahan ejaan pada buku teks Biologi yang digunakan siswa SMAN di Kota Banda Aceh. Miskonsepsi yang paling tinggi terdapat pada materi struktur dan fungsi jaringan hewan yaitu sebesar 23%. Sementara itu, miskonsepsi yang paling rendah terdapat pada materi sistem reproduksi dan sistem koordinasi yaitu sebesar 3%. Hasil uji korelasi antara kesalahan ejaan dengan minat baca menghasilkan nilai rhitung = -0,408. Angka tersebut menunjukkan bahwa kedua variabel mempunyai korelasi yang sedang, karena nilai rhitung = -0,408 > 0,400. Sedangkan nilai probabilitas antara kesalahan ejaan dengan minat baca diperoleh sebesar 0,213> 0,05. Hasil uji korelasi menunjukkan bahwa terdapat hubungan antara kesalahan ejaan pada buku teks dengan minat baca siswa SMAN di Kota Banda Aceh, namun tidak signifikan.
Karakteristik Morfologi dan Pemanfaatan Bambu Duri (Bambusa blumea) di Wilayah Pesisir Desa Jambo Timu, Kecamatan Blang Mangat, Kota Lhokseumawe
Authors: Fathiya Nir , Qariza Maulin Hayatun , Nazhifah Sri Azizah , Diah Husna
Published: July 2023

Bambu merupakan salah satu jenis tumbuhan yang telah banyak dimanfaatkan oleh masyarakat secara turun-temurun karena memiliki beragam khasiat dan harganya relatif murah. Salah satu jenis bambu yang ditemukan melimpah di wilayah Indonesia adalah bambu duri (Bambusa blumea). Tujuan penelitian adalah untuk menyediakan informasi tentang karakteristik morfologi dan pemanfaatan bambu duri di wilayah pesisir Desa Jambo Timu, Kota Lhokseumawe. Metode penelitian berupa Participatory Rural Appraisal (PRA) dan dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa bambu duri di Desa Jambo Timu memiliki karakteristik morfologi di antaranya: daun (bangun daun berbentuk lanset, pangkal daun tumpul, ujung daun meruncing, tepi daun merata, pertulangan daun sejajar, dan permukaan daun berbulu), buluh dan ranting (berwarna hijau, namun ada perbedaan dalam tingkatan warna dan memiliki duri), dan tunas (berwarna jingga dan tertutup dengan bulu-bulu halus cokelat). Bambu duri digunakan sebagai obat tradisional, pupuk, perkakas rumah tangga, kerajinan, dan bahan konstruksi. Bagian-bagian bambu duri yang dimanfaatkan oleh warga Desa Jambo Timu adalah buluh bambu, daun bambu, dan tunas bambu. Persentase bagian bambu duri terbanyak digunakan adalah buluh bambu yaitu sebesar 72%. Sedangkan daun bambu dan tunas bambu dimanfaatkan warga sebesar 14%.
Robotic Drilling of Aluminum Alloy
Authors: Messaoudi Fouad , Djebara Abdelhakim , Djennane Mohamed
Published: July 2023

This paper presents an experimental approach to evaluate the ability of a six-axis industrial robot to drill aluminum alloy parts. A strategy based on statistical tests has been studied to quantify and predict the relative contribution of cutting parameters on cutting force and shape errors during drilling. This technique is based on the identification of relevant sources of error during high-speed robotic fitting. The machining quality was quantified in terms of dimensional and geometric tolerance, chip formation and evacuation, burr formation, edge build-up, tool wear and surface damage. Statistical analysis of the experimental results reveals a strong dependence between part accuracy and drilling force. An experimental model was developed to represent and predict the cutting force during drilling and an accurate error prediction capability was distinguished. It was found that at high cutting speed and feed rate, the cutting force was the main source of error affecting the accuracy of the machined parts. Verification experiments are performed, and the results reveal that dimensional defects are significantly reduced by a heat treatment effect (90 HRE) and the thrust force decreases with an increase in cutting speed. The recommended cutting speed for robotic drilling is 6000 rpm with a feed rate of 0.15 mm/min. This study provides important technical guidance for improving the robotic drilling of aluminum alloy in practice.
Pares evaluadores de revistas científicas
Authors: Vargas Rafael , Camargo Sánchez Andrés
Published: July 2023

Como se mencionó en el editorial del número anterior, la ciencia y la investigación se comunican a través de artículos científicos o "papers"; sin embargo, el conocimiento científico publicado no es un producto acabado, no es infalible, y es susceptible a errores como lo esbozó el famoso astrofísico y divulgador científico Carl Sagan en dos frases célebres: “La ciencia no es perfecta, con frecuencia se utiliza mal, no es más que una herramienta, pero es la mejor herramienta que tenemos: se corrige a sí misma, está siempre evolucionando y se puede aplicar a todo. Con esta herramienta conquistamos lo imposible” y “en la ciencia la única verdad sagrada es que no hay verdades sagradas” (1). A pesar de las limitaciones planteadas por Sagan, las revistas científicas y los artículos publicados permiten que el progreso científico sea de dominio público y se emplee en beneficio de la sociedad.
Componente humano en estudiantes de un programa de ciencias de la salud en la Fundación Universitaria del Área Andina, Pereira, 2021
Authors: Blanco Vanegas Angélica María , Gómez González María del Pilar , Taborda Martínez Luisa Fernanda , Vásquez Giraldo Valentina , Vallejo Galvis Carlos Steven , Arias Velásquez Juan Pablo
Published: July 2023

La deshumanización es la reducción de las cualidades que distinguen a las personas como seres humanos, llevando al profesional a actuar sin ser capaz de experimentar empatía. La educación en ciencias de la salud enfrenta la dificultad que representa el desarrollar mecanismos que permitan implementar un componente humano óptimo desde la formación profesional. El propósito de no implicarse emocionalmente es, quizá, un mecanismo de defensa que aparta del sufrimiento ajeno. Esta actitud impersonal compromete la empatía, desgasta el ideal y promulga la necesidad de una educación afectiva para conservar la empatía durante los años de formación. Objetivo: identificar el componente humano en  estudiantes de un programa de ciencias de la salud en la Fundación Universitaria del Área Andina, Pereira, 2021. Método: estudio cuantitativo, descriptivo, transversal, muestra de 146 estudiantes seleccionados en forma no probabilística. La captura y procesamiento de la información básica según las variables de estudio se realizó a través del programa STATA 15. Resultados: el puntaje de medición de empatía global obtenido en la investigación fue de 97 lo que indica un nivel sobresaliente (88-113). Conclusiones: es importante generar estrategias que impacten desde la academia, que promuevan la empatía y el factor humanístico.
Costos socioambientales del fútbol moderno. Capitalismo, transformación y cambio climático
Authors: Bonada Chavarría Alejandro
Published: July 2023

En el siglo XXI, la industria del fútbol ha crecido más rápido que en todo el siglo XXI. La organización de copas continentales, mundiales de fútbol entre dos o más países sede, la construcción de enormes estadios y el aumento en la condición física y nviel de juego de los futbolistas es una de las caras más publicitadas. Sin embargo, al ser un producto de consumo global, el espectáculo del balompié oculta una serie de explotaciones socioambientales que no han sido discutidas por las ciencias sociales. Algunos clubes y federaciones están implementando proyectos y acciones para mitigar impactos como la huella de carbono y la sustentabilidad energética. Sin embargo, muchos de ellos no están libres de contradicciones ya que, por un lado, son eficientes en cosas como captación de agua pluvial en los estadios, mientras que su construcción se llevó a cabo a partir de la deforestación y despojo. En este sentido, el artículo es una exploración a estas estrategias, así como del fetichismo del fútbol como mercancía, desde una perspectiva socioambiental.
Los Mundiales de fútbol: una lectura desde breves acercamientos a la tecnología, la digitalización y la geopolítica
Authors: Salazar López Santiago Sebastián
Published: July 2023

Los cambios progresivos en la sociedad, indudablemente inciden dentro de las formas geopolíticas de nuestra organización y de la digitalización de la misma en función del tiempo. El cómo nos relacionamos con el avance dentro de las nuevas tecnologías en diferentes planos, suma también cambios en los ámbitos interpersonal, político, económico, organizacional y aperturan una oportunidad de cambio estratégico con nuevos espacios de sociabilidad o antagonismos, con la emergencia de nuevos socioactores. En el escenario geopolítico la situación también es progresiva, pues los diferentes procesos denotan una carrera por el poder, por los réditos económicos y la tecnología. No es menor que, escenarios como el deporte, también respondan a estas fluctuaciones en las condiciones históricas y disputas actuales, más aún cuando se trata del deporte más popular del planeta: el fútbol. En ese sentido, este artículo permitirá visibilizar dos procesos: el de la digitalización y la geopolítica, vinculadas esencialmente con el estudio de los Mundiales de Fútbol.
PENERAPAN MEDIA PEMBELAJARAN BERBASIS ANDROID DENGAN MENGGUNAKAN SMART APPS CREATOR (SAC) UNTUK MENINGKATKAN MINAT BELAJAR SISWA
Authors: Diana Tri Septiani  , Yoyo Zakaria
Published: July 2023

Penelitian ini bertujuan (1) Untuk mengetahui bagaimana media pembelajaran dengan Smart Apps Creator (SAC) dapat diterapkan di kelas X Multimedia SMK PGRI Ciawigebang, (2) Untuk mengetahui bagaimana penggunaan media pembelajaran dengan Smart Apps Creator (SAC) terhadap minat belajar siswa di kelas X Multimedia SMK PGRI Ciawigebang. penelitian ini merupakan penelitian yang menggunakan quasi eksperimen dengan pendekatan kuantitatif untuk mengukur minat belajar siswa pada mata pelajaran Informatika dan penerapan media pembelajaran berbasis android berbantukan Smart Apps Creator (SAC) terhadap minat belajar siswa. Sampel dalam penelitian ini yaitu 18 siswa kelas X Multimedia 1 dan 18 siswa kelas X Multimedia 2 SMK PGRI Ciawigebang. Hasil penelitian ini diperoleh: (1) Pencapaian persentase skor minat belajar siswa sebelum menggunakan media pembelajaran berbasis android dengan Smart Apps Creator (Pretest) sebesar 63,89% termasuk kategori cukup sedangkan pencapaian persentase skor minat belajar siswa setelah menggunakan media pembelajaran berbasis android dengan Smart Apps Creator (Posttest) sebesar 72,78% termasuk kategori baik. Dengan demikian media pembelajaran dengan Smart Apps Creator (SAC) dapat meningkatkan minat belajar siswa.
Anticuerpo anti-antígeno de superficie del virus de la hepatitis B. Valor diagnóstico en la fibrosis hepática significativa
Authors: Mendoza Coussette Ulises , Carrasco Ruano Cesar
Published: July 2023

Introducción: la identificación no invasiva temprana de la fibrosis hepática significativa se mantiene aún como desafío científico y clínico. Una pregunta es la capacidad discriminante  del anticuerpo frente al antígeno de superficie de la Hepatitis B sobre la fibrosis hepática significativa en pacientes con infección crónica por el virus de la hepatitis B. Objetivos: evaluar el valor diagnóstico y predictivo del anticuerpo contra el antígeno de superficie sobre la fibrosis hepática significativa en la infección crónica por el virus de la hepatitis B. Metodología: fue llevado a cabo un estudio observacional y transversal incluyendo 15 pacientes infestados crónicos por el virus de la hepatitis B con fibrosis hepática significativa y 43 sujetos controles  sin fibrosis hepática significativa. El recuento plaquetario, niveles de anticuerpo frente a antígeno de superficie, antígeno de superficie, Aspartato- Aminotransferasa y Alanino- Aminotransferasa fueron medidos por métodos automatizados, según instrucciones del fabricante. Los índices de fibrosis hepática APRI y FIB-4 fueron calculados acorde a formula recomendada. La fibrosis hepática significativa fue considerada cuando los índices FIB-4 y/o APRI fueran iguales o superiores a 1,45 y 0,5, respectivamente. El paquete estadístico SPSS, versión 18.0, fue usado para analizar los resultados. Resultados: los niveles séricos del anticuerpo frente al antígeno de superficie fueron encontrados como predictor independiente (regresión múltiple; OR= 0,680; p= 0,021) y buena discriminante (AUROC=0,876; p=0,000) de la fibrosis hepática significativa. El punto de corte 4,9 mUI/ml para este anticuerpo mostro 100 % y 72,1 % de sensibilidad y especificidad diagnostica, respectivamente, y razón de verosimilitud positiva de 3,58. Conclusiones: el nivel sérico del anticuerpo frente al antígeno de superficie mostró capacidad diagnóstica y valor predictivo sobre la fibrosis hepática significativa en curso de la infección crónica por el virus de la hepatitis B. Niveles séricos del anti-antígeno de superficie menores de 4,9 mUI/ml sugieren fibrosis hepática significativa en curso de infección crónica por el virus de la hepatitis B. El punto de corte 4,25 mUI/ml mostró el mayor porciento de exactitud diagnostica (88%).
Anticuerpo frente al antígeno de superficie y biomarcadores de fibrosis hepática. Resultados preliminares
Authors: Mendoza Coussette Ulises , Carrasco Ruano Cesar
Published: July 2023

Introducción: la detección oportuna de la Fibrosis Hepática en personas con infección crónica por el virus de la Hepatitis B mediante biomarcadores no invasivos permanece como problema científico. El anticuerpo Anti- Antígeno de Superficie es un biomarcador específico del virus de la hepatitis B asociado al control de la infección, cuya relación con la fibrosis hepática en estas personas no ha sido completamente esclarecida en Granada. Objetivo: evaluar la relación entre los niveles séricos del anticuerpo anti – Antígeno de Superficie del virus de la Hepatitis B y los índices de fibrosis hepática APRI y FIB-4. Metodología: se realizó un estudio transversal incluyendo 20 pacientes infectados crónicos por el virus de la Hepatitis B y 23 voluntarios saludables vacunados contra el mismo. El estudio fue conducido desde julio a noviembre de 2018. Fueron considerados como criterios de exclusión: resultado positivo de los análisis serológicos para virus de inmunodeficiencia humana y Hepatitis C; así como otras causas de enfermedad hepática crónica. Los niveles de plaquetas, anti-antígeno de superficie, antígeno de superficie y actividad sérica de Aspartato-Aminotransferasa y Alanino-Aminotransferasa, fueron medidos en equipos automatizados acorde a instrucciones del fabricante. Los índices de fibrosis hepática FIB-4 y APRI fueron calculados acorde a las fórmulas recomendadas. El programa SSPS, versión 18.0, fue usado para analizar los resultados. Resultados: los niveles séricos del Anti-Antígeno de Superficie mostraron correlación negativa con el índice de fibrosis hepática FIB-4 en el grupo de los pacientes (Rho de Spearman = (-) 0, 539; p = 0, 014). Conclusiones: los niveles séricos del anticuerpo frente al antígeno de superficie estuvieron negativamente asociados con la fibrosis hepática en los pacientes infectados crónicos por el virus de Hepatitis B estudiados.
A low burden of severe illness: the COVID-19 Omicron outbreak in the remote Torres and Cape region of Far North Queensland
Authors: Taunton Caroline , Hawthorn Leanne , Matysek Rittia , Coates Marlow , Pickering Emma , Neville Johanna , Hanson Josh , Smith Simon , Hempenstall Allison
Published: July 2023

A coronavirus disease 2019 (COVID-19) outbreak was declared in the remote Torres and Cape region of Far North Queensland soon after the Queensland border opened for quarantine-free domestic travel in December 2021, with a total of 7,784 cases notified during the first ten-month outbreak period. We report a crude attack rate among residents of 25.6% (95% confidence interval [95% CI]: 25.1–26.1%), a hospitalisation rate of 1.6% (95% CI: 1.3–1.9%) and a crude case fatality rate of 0.05% (95% CI: 0.01–0.13%). Hospitalisation and case fatality rates were similar among First Nations and non-Indigenous people, with double dose COVID-19 vaccination rates higher among First Nations than non-Indigenous people by the end of the outbreak period. We attribute the low burden of severe illness to local community leadership, community engagement, vaccination coverage and recency, and community participation in a local culturally considered COVID-19 care-in-the-home program.
Test di Funzione Tabulare
Authors: Sessa Adalberto , Meroni Mietta , Fumagalli Matilde
Published: July 2023

Abstract non disponibile (Management)
Il Bilancio Dei Fluidi in Trattamenti Prolungati: Esperienza Clinica Con Equaline®
Authors: Luciano Fecondini , Claudio Ronco
Published: July 2023

Abstract non disponibile
Importanza Diagnostica e Limiti Della Valutazione Della Beta 2-microglobulin Urinaria
Authors: David S.
Published: July 2023

Abstract non disponibile
Studio Del Pattern Lipidico e Lipoproteico Nel Paziente in Emodialisi
Authors: Sanna G. , Cherchi G.M.
Published: July 2023

Abstract non disponibile
La diagnosi Radiologica Dell'osteopatia Uremica
Authors: Giusti B.P. , Pedaccini P. , Duranti E. , Grani M. , Sasdelli M.
Published: July 2023

Abstract non disponibile
La Nutrizione Nel Trapianto Renale
Authors: Quintaliani G. , Demegni L. , Brugnano R. , Pittavini L. , Buoncristiani U.
Published: July 2023

Abstract non disponibile
Plasmafiltrazione a Cascata
Authors: Passalacqua S. , Costanzi S. , Fulignati P. , Splendiani G.
Published: July 2023

Abstract non disponibile
IL Caso Clinico
Authors: Garosi G.
Published: July 2023

Abstract non disponibile
Normative Di Sicurezza Nei Trattamenti Dialitici Extracorporei
Authors: Mura C. , Sasdelli M.
Published: July 2023

Abstract non disponibile
Ecografia Nella Calcolosi Renale
Authors: Conti P. , Mura C. , Sanna G.
Published: July 2023

Abstract non disponibile
La risonanza magnetica pesata in diffusione (DWI) per la quantificazione del volume delle cisti e la caratterizzazione del tessuto non cistico nella malattia policistica renale: lo studio dell’Istituto Mario Negri
Authors: Benigni Ariela
Published: July 2023

Beyond total kidney and cyst volume, non-cystic tissue plays an important role in autosomal dominant polycystic kidney disease (ADPKD) progression. Recent advancements in magnetic resonance imaging (MRI) offer the possibility to study kidney microstructure and function, besides anatomy. In particular, Diffusion Weighted Imaging (DWI), an MRI technique sensitive to water molecule motion (diffusion) in biological tissues, allows to investigate microstructure. This study, recently published in the European Radiology scientific journal, proposes and preliminary validates a novel method to segment cystic and non-cystic volume on DWI scans from ADPKD patients. The study also provides evidence of DWI potential in characterising non-cystic kidney tissue, denoted by higher diffusion and lower perfusion than healthy tissue, in line with its fibrotic nature and the likely presence of microcysts. Overall, this study provides evidence in support of DWI potential in ADPKD. DWI could complement existing biomarkers for noninvasively staging, monitoring, and predicting ADPKD progression and evaluating the impact of novel therapies, possibly targeting damaged non-cystic tissue besides cyst expansion.
The Effect of Company Size, Financial Leverage, Profitability, and Dividend Payout Ratio on Income Smoothing Practices
Authors: Dewi Sintia , Pratama Bayu
Published: July 2023

This study aims to test whether company size, financial leverage, profitability, and dividend payout ratio affect earnings smoothing practices in LQ-45 index companies on the Indonesia Stock Exchange in 2018-2020. This research uses quantitative methods. The population in this study is the LQ-45 company index with a sample recruitment technique using purposive sampling. The selected samples were 19 companies through predetermined sample criteria. Hypothesis testing uses logistic regression analysis, and data is processed using E-Views 10 software. The results of this study indicate that company size has a significant positive effect on the practice of the role of profit, financial leverage has a significant and negative effect on the practice of the role of profit, profitability has an effect and is significant positive effect on income smoothing practices, dividend payout ratio has no effect on income smoothing practices in LQ 45 index companies on the Indonesia Stock Exchange in 2018-2020.
Jane Austen, Virginia Woolf and Worldly Realism
Authors: Morris Pam
Published: July 2023

The book presents Austen and Woolf as materialists - a wholly new critical and political perspective. In conscious opposition to the growing dominance of idealist ideology in their own times, they assert an egalitarian, constitutive continuity between people, things, and the physical universe. This radical redistribution of the importance of things and the biological challenges the idealist hierarchy of mind over matter that underpins gender, sexuality, class and race subordination. Equally, it radically reconfigures notions of interiority and human exceptionalism. This materialist understanding produces an experimental writing practice termed worldly realism, constituted by innovations in focalisation, an emphasis upon things as they mediate self, social, cultural and physical existence. The book substantiates this view of Austen’s and Woolf’s work by means of close textual readings of the novels alongside new research on public discourses and forces of consumerism, productivity and processes of change. Austen and Woolf enter their writing careers at the critical moments of the French Revolution and the First World War when established order and values were destabilised. Sharing a political inheritance of empirical Enlightenment scepticism, their rigorous critiques of the danger s of mental vision unchecked by facts, is more timely than ever in the current world dominated by fundamentalist free market, religious and nationalist belief systems.
Robinia pseudoacacia L. — an important introduced tree species in protective stands of forest-agrarian landscapes of Ukraine
Authors: Chornobrov O. , Solomakha V.
Published: July 2023

The article analyzes the importance of black locust (Robinia pseudoacacia L.) in forest-agricultural landscapes of Ukraine. As a result of cultivation and invasion black locust became part of the landscape of a number of European countries, in particular Ukraine, as well as a component of culture and economy, including cultural and historical heritage. In some European countries, this tree species is economically important and is used to obtain commercial wood and firewood, biomass for energy needs, honey, also used to prevent erosion, in greening of populated areas, phytoremediation of contaminated soils, etc. In Ukraine black locust occupies about 5% of the total forest area and is widely used in the planting of protective forest stands (anti-erosion, runoff-controlling, field protection forest belts) and in beekeeping (production of honey). At the same time, this invasive plant poses a threat to the preservation of native species and natural habitats. However, the possibility of uncontrolled spread of the black locust in the agricultural landscapes of Ukraine beyond the boundaries of protective stands is significantly limited by intensively cultivated agricultural land (arable land). In forests, the spread of black locust is controlled by appropriate cutting. The ban on the use of black locust in reforestation will lead to a problem in the restoration of protective forest stands, in particular anti-erosion and field protection forest belts, in which it was the main species. Therefore, we offer a balanced approach, which involves the controlled use of black locust in forest melioration, forestry and agriculture (as a source of wood, honey, forage) and bioenergy (biomass), while simultaneously preventing its invasion into the ecosystems of the nature protection fund. This approach is consistent with the State Forest Management Strategy of Ukraine until 2035 and the environmental policy of the European Union in the field of management of invasive alien plant species.