bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigation of the profilogram structure of microstrip microwave modules manufactured using additive 3D-printing technology
Authors: Vorunichev D. S. , Kostin M. S. 
Published: October 2023

Objectives. The aim of the work is to study the surface roughness of the current-carrying topology and dielectric of the upper (Top Layer) and lower (Bottom Layer) sides of microwave modules manufactured using additive three-dimensional printing technology when prototyping prototypes of microwave modules on a 3D printer of DragonFly 2020 LDM multilayer printed circuit boards.Methods. Methods of metallographic analysis in bright and dark fields, surface roughness profiling, and computer modeling were used.Results. Experimental samples of microstrip microwave elements of modules of multilayer boards of a given configuration, telemetry sensors, printed circuit board (PCB) antennas were obtained. The topological and radiophysical features of the additively formed upper and lower surface layers of experimental samples of boards of strip modules were studied. Optical profilogram measurements of the roughness of the outer sides of the board were carried out at 10 points, amounting to 2 µm for the upper layer of the topology and 0.3 µm for the lower layer; the average grain size of the dielectric base was determined at 0.007 mm2. The roughness of the conductive topology and upper side dielectric was shown to correspond to an accuracy class of 6–7, while the roughness of the microstrip conductive topology and the dielectric of the lower side of the board corresponds to an accuracy class of 10–12.Conclusions. It is established that an uneven formation of the lower and upper strip layers of the printed module can affect the inhomogeneity of the distribution of radiophysical parameters (dielectric permittivity, surface conductivity, etc.), as well as the instability of the structural (adhesion ability, thermal conductivity, etc.) characteristics of the strip module, which must be taken into account when prototyping devices using inkjet 3D printing technology, including when adapting Gerber projects of PCB modules created for classical board production technology.
Nonlinear magnetoelectric effect in a ring composite heterostructure
Authors: Musatov V. I. , Fedulov F. A. , Savelev D. V. , Bolotina E. V. , Fetisov L. Y. 
Published: October 2023

Objectives. The relevance of the study of magnetoelectric (ME) effect in ring ferromagnetic–piezoelectric heterostructures is due to the possibility of creating various ME devices having improved characteristics. A detailed investigation of the nonlinear ME effect in a ring composite heterostructure based on lead zirconate titanate (PZT) piezoceramics and Metglas® amorphous ferromagnetic (FM) alloy under circular magnetization is presented.Methods. The ME effect was measured by the low-frequency magnetic field modulation method. Excitation alternating- and constant magnetic bias fields were created using toroidal coils wound on a ring heterostructure for circular magnetization of the FM layer.Results. When excited with circular magnetic fields in a non-resonant mode, the ME ring heterostructure generates a nonlinear ME voltage of higher harmonics. The field and amplitude dependencies of the first three ME voltage harmonics were investigated. ME coefficients were obtained for the linear ME effect α(1) = 5.2 mV/(Oe·cm), the nonlinear ME effect α(2) = 6 mV/(Oe2·cm), and α(3) = 0.15 mV/(Oe3·cm) at an excitation magnetic field frequency f = 1 kHz. The maximum amplitudes of the 1st and 3rd harmonics were observed at a constant bias magnetic field H ~ 7 Oe, which is almost two times smaller than in planar PZT–Metglas® heterostructures.Conclusions. A nonlinear ME effect was observed and investigated in a ring heterostructure based on PZT piezoceramics and Metglas® amorphous FM alloy. Due to the absence of demagnetization during circular magnetization of the closed FM layer, nonlinear ME effects are detected at significantly lower amplitudes of the exciting alternating and constant bias magnetic fields as compared to planar heterostructures. The investigated ring heterostructures are of potential use in the creation of frequency multipliers.
Synchrotron radiation of a single electron application for optical spectroradiometry
Authors: Sigov A. S. , Lazarenko E. R. , Golovanova N. B. , Minaeva O. A. , Anevsky S. I. , Minaev R. V. , Pushkin P. Yu. 
Published: October 2023

Objectives. The investigations of optical radiation sources and metrological detector characteristics in the infrared (IR), visible, and air ultraviolet (UV) spectral regions are partially based on the unique metrological properties of synchrotron radiation. The aim of this work is to develop a high-precision method for determining the storage ring accelerated electron number with synchrotron radiation of a single electron to establish spectroradiometry and photometry units.Methods. By determining the number of accelerated electrons, any storage ring can be used to calculate the synchrotron radiation characteristics at wavelengths of many large then the critical wavelength in the visible, air UV, and IR regions of the spectrum. This makes it possible to determine the main metrological characteristics normalized to the number of electrons, such as luminous intensity, luminance, illuminance, radiant power, radiance, irradiance, etc., regardless of the energy of the electrons.Results. When applying the method for determining the number of accelerated electrons at low currents of the electronic storage ring, a total standard deviation of the number of accelerated electrons is less than 0.01% for an exposure range of the CCD matrix from 10−2 to 3 · 103 s in a wide dynamic range of 1−1010 electrons per orbit.Conclusions. The use of a CCD-based radiometer-comparator calibrated by responsivity on a synchrotron radiation source is particularly relevant in monitoring luminance contrast thresholds and spatial distribution of object and background brightness, as well as determining metrological characteristics of optoelectronic measuring instruments, including CCD cameras, radiometers, spectroradiometers and photometers.
On adaptive identification of systems having multiple nonlinearities
Authors: Karabutov N. N. 
Published: October 2023

Objectives. The solution to the relevant problem of identifying systems with multiple nonlinearities depends on such factors as feedback, ways of connecting nonlinear links, and signal properties. The specifics of nonlinear systems affect control systems design methods. As a rule, the basis for the development of a mathematical model involves the linearization of a system. Under conditions of uncertainty, the identification problem becomes even more relevant. Therefore, the present work sets out to develop an approach to the identification of nonlinear dynamical systems under conditions of uncertainty. In order to obtain a solution to the problem, an adaptive identification method is developed by decomposing the system into subsystems.Methods. Methods applied include the adaptive identification method, implicit identified representation, S-synchronization of a nonlinear system, and the Lyapunov vector function method.Results. A generalization of the excitation constancy condition based on fulfilling the S-synchronizability for a nonlinear system is proposed along with a method for decomposing the system in the output space. Adaptive algorithms are obtained on the basis of the second Lyapunov method. The boundedness of the adaptive system trajectories in parametric and coordinate spaces is demonstrated. Approaches for self-oscillation generation and nonlinear correction of a nonlinear system are considered along with obtained exponential stability conditions for the adaptive system.Conclusions. Simulation results confirm the possibility of applying the proposed approach to solving the problems of adaptive identification while taking the estimation of the structural identifiability (S-synchronization) of the system nonlinear part into account. The influence of the structure and relations of the system on the quality of the obtained parametric estimates is investigated. The proposed methods can be used in developing identification and control systems for complex dynamic systems.
Insulin Resistance Associated with Impaired Fasting Glycaemia in Anti-Retroviral Therapy Patients
Authors: K Karthik , Pillai Arathi , Gupta Anurodh , Ramaswamy Palaniswamy , Rawat Leena , K Sibin M 
Published: October 2023

Background: Insulin resistance was associated with type-2 diabetes mellitus regardless of HIV status. However, an association of insulin resistance in prediabetes with HIV-infected subjects undergoing anti-retroviral therapy (ART) has been reported in very few studies.
Methods: Serum insulin and insulin resistance (HOMA-IR) were measured in ART patients with impaired fasting glycemia (IFG) and those with normal glucose tolerance (NGT) along with other biochemical parameters.
Results: There was increased insulin resistance in the ART IFG group when compared to their ART NGT counterparts. There was a positive correlation of HOMA-IR with serum creatinine, triglycerides, and ALT levels. However, serum HDL showed a negative correlation with HOMA-IR.
Conclusion: Present study showed that there is association of insulin resistance in IFG associated with HIV-infected subjects on ART. Hence, monitoring the insulin resistance in ART patients may help in early prevention of type 2 diabetes mellitus.
Keywords: Human Immunodeficiency Virus, anti-retroviral therapy, impaired fasting glycemia, serum Insulin, HOMA-IR
Incidence of Peripheral Vascular Malformations of Limbs in SMS Hospital Jaipur
Authors: Shekhawat Chitresh , Singh Neetu , Sharma Gaurav 
Published: October 2023

Peripheral vascular malformations (PVMs) include a wide spectrum of diseases that can produce potentially life- or limb-threatening complications. The International Society for the Study of Vascular Anomalies (ISSVA) Classification System categorized vascular anomalies into two basic types, the vaso proliferative or vascular neoplasms and developmental vascular abnormalities.
Method: A retrospective, cross-sectional study was conducted for the period of 2 year. All patients under surgery OPD with a Peripheral limb vascular anomaly excluding upper limbs and lower limbs were taken into the study and investigated and followed up for at least 6 months.
Result: In this study, out of 38 patients 26 patients (12 (44%) males and 14 (56%) females) were diagnosed withvascular malformation of upper and lower limbs. It is observed that low flow lesions are more common in both upper and lower limbs. Male patients with these lesions tend to present much later in life than female patients.
Conclusion: AVMs show variance in site and type based on gender. Male patients were more likely present with high-flow AVMs in lower limbs whereas female patients typically presented with low-flow AVMs on the upper extremities.
Keywords: Peripheral limb vascular malformations, varicose veins, AVM.
The role of competitive advantage as a mediator of knowledge management, learning orientation and innovation on the performance of batik SMEs in Bangkalan regency, Indonesia
Authors: Mauludin Muchammad Firman , Sudarmiatin  , Mukhlis Imam , Handayati Puji 
Published: October 2023

This study examines the influence of knowledge management, learning orientation and innovation on the performance of 272 batik SMEs in Bangkalan Regency. The findings reveal that these factors significantly impact SME performance. The development of distinctive batik products with distinctive themes and a wide variety of offers in comparison to competitors serves a significant function as a mediator. Knowledge management facilitates the generation of new knowledge and ideas for product development whereas learning orientation focuses on developing employee capabilities and skills. SME innovation involves the early adoption of new products, variation development and the creation of superior offerings. This study highlights the importance of knowledge management, learning orientation and innovation in driving batik performance. It emphasizes the significance of competitive advantage in creating unique batik products and diversifying the product range to outperform competitors.
Susceptibilidad antimicrobiana y enterotoxinas en Staphylococcus aureus aislado de queso fresco expendido en mercados municipales de la ciudad de Cuenca – Ecuador
Authors: Farfán Sari Katherine Fernanda , Romero Zhagui Gabriela Rosario , Ortiz Tejedor Jonnathan Gerardo 
Published: October 2023

Introducción. Las bacterias son microorganismos unicelulares causantes de múltiples enfermedades. En la actualidad constituyen un problema de salud pública debido a su alta tasa de resistencia a los antimicrobianos por diferentes mecanismos. Staphylococcus aureus es una de las especies predominantes en los seres humanos, asociada a factores de virulencia y dentro de estos, destacan enterotoxinas A, B, C, D, E, siendo causantes de Enfermedades Transmitidas por Alimentos (ETAs). Objetivo. Determinar la susceptibilidad antimicrobiana y enterotoxinas en Staphylococcus aureus aislado de queso fresco expendido en mercados municipales de la ciudad de Cuenca – Ecuador. Metodología. La presente investigación se trata de un estudio de tipo descriptivo, de corte transversal, mediante la aplicación de métodos fenotípicos y moleculares para la determinación de la susceptibilidad de antimicrobianos, e identificación de enterotoxinas. Resultados. Mediante técnicas microbiológicas y biología molecular se confirmó, por medio de los genes nucA, femB la presencia de 3 muestras positivas para S. aureus, por otro lado, en la prueba de susceptibilidad obtuvimos un alto porcentaje de resistencia a penicilina de todas las muestras, sin embargo, para clindamicina, eritromicina y cefoxitina resultó completamente sensible, por lo que mediante la amplificación del gen blaZ se confirmó la resistencia a penicilina. Por otra parte, no se encontró la presencia de enterotoxinas, mediante métodos moleculares. Conclusión. El 62,5% de las muestras positivas resultaron resistentes a penicilina, confirmado mediante la amplificación del gen blaZ. En contra parte, el 100% resultó sensible para clindamicina, eritromicina y cefoxitina. Área de estudio general: Bioquímica y Farmacia. Área de estudio específica: Microbiología de alimentos y Biología molecular. Tipo de estudio: Original.
Calidad del servicio turístico y satisfacción del cliente en el cantón Guano, provincia de Chimborazo
Authors: Sampedro Guevara Juan José , Herrera Chávez Renato Hernán , Duque Vera Dalia Cristina 
Published: October 2023

Introducción. Guano conocido como la “Capital Artesanal del Ecuador”, es un pueblo antiguo que cuenta con una larga y vasta historia, por lo tanto, Guano potenciaría su turismo al dar satisfacción al cliente. Objetivo. El presente trabajo de investigación tiene como objetivo analizar la influencia entre la calidad del servicio turístico y la satisfacción del cliente en los establecimientos del cantón Guano provincia de Chimborazo. Metodología. El diseño de la investigación utilizado fue, no experimental, transversal, el tipo de investigación fue cualitativa, descriptiva y de carácter correlacional. La validación del instrumento de investigación a través de alfa de Cronbach, cuestionarios bajo la escala de Likert, la unidad de análisis de investigada fue a 15 establecimientos de alimentos y bebidas y 334 turistas. En el software SPSS, con chi cuadrado, se comprobó las hipótesis. Resultados. Se demuestra que no existe influencia significativa entre la calidad del servicio turístico y satisfacción del turista. A su vez se describen y caracterizan las dimensiones relacionadas a los procesos, servicio, mejoramiento, expectativa, experiencia y percepción. Conclusión. En el entorno en el que se realizó la investigación, no existe una influencia significativa entre la calidad del servicio turístico y la satisfacción del cliente en el cantón Guano. Área de la ciencia. Turismo, bioseguridad, insatisfacción, satisfacción, calidad.
SAĞLIĞI ETKİLEYEN ETMENLERİN VE HASTALIKLARIN AKTARIMINDA MEDYANIN GÖRÜNÜMÜ
Authors: KAPLAN ESEN Gülnur , MERT EBEŞ Miraç Pınar 
Published: October 2023

Tıbbın alanına dâhil olan sağlık/hastalık kavramını, sosyal ve kültürel alanların dışında değerlendirmek mümkün değildir. Kişisel etmenler, yaşam koşulları ve çevresel etmenler, sosyo-kültürel etmenler sağlığın nedensellik ağı içinde birbiriyle bağlantılıdır. Hastalıkların önlenmesi, sağlığın korunması, sağlık bilincinin oluşturulması, sağlık eğitiminin sağlanması, sağlık okuryazarlığının artırılması aşamasında kitle iletişim araçlarına büyük sorumluluk düşmektedir. Kamu sağlığı enformasyonunun aktarımındaki en önemli araçlardan biri konumunda olan medya; hazırlanan içerikleri belirlenen hedef kitlelere iletmede, hedef kitlelerin farkındalığını oluşturmada ve davranışlarını yönlendirmede birincil kaynak durumundadır. Kamusal güçlerin eylem alanında bulunan sağlık ve sağlıklı olma anlayışının değişmesi ve şekillendirilmesi, medyayla sağlanmaktadır. Sağlık sorunları, medya aracılığıyla toplumsal ve ekonomi-politik bağlamından koparılmaktadır.
Bu çalışmada televizyonda yayınlanan sağlık programları çerçevesinde; hastalık/sağlık kavramının medyada nasıl yapılandırıldığı ortaya konularak, sağlığı etkileyen etmenlerin aktarımında medyanın nasıl rol aldığı tespit edilip eleştirel olarak irdelenip sunulması amaçlanmıştır. Medya araçları içinde hem kolay erişilebilmesi hem de kolay tüketilebilmesi açısından televizyonda yayınlan sağlık programları, bireylerin sağlıkla ilgili enformasyonun büyük çoğunluğunu aldıkları mecradır. Bu nedenle çalışmada, televizyonda yayınlanan sağlık programları araştırmanın evrenini oluşturmaktadır. CNN TÜRK Kanalında yayınlan Sağlık Kontrolü programıysa, araştırmanın örneklemini oluşturmaktadır. Kanalın internet arşivinden izlenen Sağlık Kontrolü programının 02 Ocak 2016 – 30 Haziran 2016 tarihleri arasında yayınlanan 26 ve 04 Ocak 2020 – 31 Mayıs 2020 tarihleri arasında yayınlanan 21 bölümü incelenmiştir. Toplanan veriler, niteliksel ve niceliksel içerik çözümlemesi yöntemiyle analiz edilmiştir. COVID-19 pandemisi sürecinde ve öncesinde, sağlığı etkileyen etmenlerin aktarımında medyanın nasıl bir işlev gördüğü karşılaştırmalı olarak değerlendirilmiştir. Yayınlanan sağlık programının bulguları değerlendirildiğinde, her iki dönemde de yoğunluk olarak hastalıkların, tedavi yöntemlerinin, tedavide kullanılacak teknolojik araçların üzerinde odaklanıldığı, sağlığın nedensellik ağının sekteye uğratıldığı sonucuna ulaşılmıştır.
FUNGSI, MAKNA DAN NILAI ESTETIKA TARI WADIAN KELONG DALAM UPACARA ARUH ADAT BAHARIN DI DESA KAPUL KABUPATEN BALANGAN
Authors: Janearditta Wulan , Sutardi Edi , Suwarjiya  
Published: October 2023

Penelitian ini bertujuan untuk (1) mendeskripsikan bentuk penyajian tari Wadian Kelong dalam upacara Aruh Adat Baharin di Desa Kapul Kabupaten Balangan. (2) mendeskripsikan fungsi dan makna tari Wadian Kelong dalam upacara Aruh Adat Baharin di Desa Kapul Kabupaten Balangan. (3) mendeskripsikan nilai estetika tari Wadian Kelong dalam upacara Aruh Adat Baharin di Desa Kapul Kabupaten Balangan. Metode yang digunakan adalah metode kualitatif. Teknik pengumpulan data menggunakan teknik observasi, wawancara dan dokumen. Hasil penelitian yang didapat adalah (1) Bentuk penyajian tari Wadian Kelong dalam upacara Aruh Adat Baharin tidak mementingkan keindahan gerak, namun lebih mementingkan maksud dan tujuan 2) Fungsi tari Wadian Kelong adalah sebagai sarana upacara ritual dan Makna tari Wadian Kelong untuk ungkapan jiwa, penghormatan dan pembayar rejeki (3) Nilai estetika tari Wadian Kelong dalam upacara Aruh Adat Baharin yaitu gerak tari sederhana dan memiliki kandungan daya intensitas dalam ketaksuan, iringan tari tidak banyak irama/ritmis bersipat inten dan khusu, tidak menggunakan tata rias wajah melainkan hanya menggunakan olesan kapur pada bagian tangan dan dada, tata busana bersifat khusus dan menjadi bagian identitas pada Wadian
Сучасні підходи в антропології: зміна парадигм та інтердисциплінарність
Authors: Шауренко Анна 
Published: October 2023

Сучасна антропологія як наука постійно знаходиться у стані еволюції та трансформації, адаптуючись до нових викликів, змін у суспільстві та науковому середовищі. Стаття має на меті ретельно дослідити два важливих аспекти сучасної антропології: зміну парадигм і роль інтердисциплінарності, що відображають актуальні тенденції у розвитку цієї науки.
Розглядається еволюція антропологічних парадигм. Вивчається перехід від класичних еволюціоністських концепцій, які намагалися пояснити різноманітність культур на основі їх розвитку, до більш сучасних підходів, де аналізується вплив культурної релятивності та контекстуальності на розуміння людських явищ. З’ясовуються ключові фактори, що призвели до зміни парадигм та розширення обсягу досліджень в антропології.
Досліджується роль співпраці антропології з іншими науками, а саме: соціологія, біологія, психологія, лінгвістика тощо. Аналізуються позитивні аспекти використання інтердисциплінарності, такі як: збагачення теоретичного апарату, розширення методологічних підходів та відкриття нових можливостей для досліджень.
Робота підсумовує, що зміна парадигм та інтердисциплінарність є ключовими чинниками розвитку сучасної антропології, які допомагають розкрити різноманітність та складність людського життя, а також призвичаїтися до реалій ХХІ ст.
Novel frameshift variants expand the map of the genetic defects in IRF2BP2
Authors: García-Aznar José María , Maneiro Pampín Emilia , García Ramos Maite , Acuña Pérez María José , Paz Gandiaga Nerea , Minguell Domingo Laura , Calavia Olga , Soler-Palacin Pere , Colobran Roger , Novoa Bolívar Erika M. , Ocejo Vinyals Javier Gonzalo 
Published: October 2023

BackgroundAt present, the knowledge about disease-causing mutations in IRF2BP2 is very limited because only a few patients affected by this condition have been reported. As previous studies have described, the haploinsufficiency of this interferon transcriptional corepressors leads to the development of CVID. Very recently, a more accurate phenotype produced by truncating variants in this gene has been defined, manifesting CVID with gastrointestinal inflammatory symptoms and autoimmune manifestations.MethodsWe analyzed 5 index cases with suspected primary immunodeficiency by high throughput sequencing. They were submitted for a genetic test with a panel of genes associated with immune system diseases, including IRF2BP2. The screening of SNVs, indels and CNVs fulfilling the criteria with very low allelic frequency and high protein impact, revealed five novel variants in IRF2BP2. In addition, we isolated both wild-type and mutated allele of the cDNA from one of the families.ResultsIn this study, we report five novel loss-of-function (LoF) mutations in IRF2BP2 that likely cause primary immunodeficiency, with CVID as more frequent phenotype, variable expression of inflammatory gastrointestinal features, and one patient with predisposition of viral infection. All identified variants were frameshift changes, and one of them was a large deletion located on chromosome 1q42, which includes the whole sequence of IRF2BP2, among other genes. Both de novo and dominant modes of inheritance were observed in the families here presented, as well as incomplete penetrance.ConclusionsWe describe novel variants in a delimited low-complex region, which may be considered a hotspot in IRF2BP2. Moreover, this is the first time that a large CNV in IRF2BP2 has been reported to cause CVID. The distinct mechanisms than LoF in IRF2BP2 could cause different phenotype compared with the mainly described. Further investigations are necessary to comprehend the regulatory mechanisms of IRF2BP2, which could be under variable expression of the disease.