bluuebunny/crossref_metadata_2025 huggingface dataset:
Temperature Modeling, a Key to Assessing Impact on Rivers Due to Urbanization and Climate Change
Authors: McBean Edward , Bhatti Munir , Singh Amanjot , Mattern Logan , Murison Lorna , Delaney Patrick
Published: June 2022

With widespread ongoing urbanization and as climate change continues, the importance of protecting the water quality of streams and lakes is intensifying. However, while many water quality constituents in lakes and rivers are of overall interest, water temperature is a ‘key’ variable as temperature influences mixing within a waterbody, influences the acceptability of the habitat for flora and fauna, and serves as a guide to the general health of a stream. To enable the assessment, a physics-based, deterministic hydraulic and heat-balance modeling procedure using the combination of MIKE SHE, MIKE HYDRO and ECO Lab is described to assess heat transfer magnitudes in portions of the Credit River, Ontario. Changes in instream temperature regimes are examined, including both frequency and spatial extent, providing insights into the impacts of urbanization in terms of seasonal temperature shifts arising from land use changes. For flow and temperature regimes, Nash–Sutcliffe model efficiency coefficient (NSE) values of 0.49 and 0.955 were achieved, respectively, for current threshold conditions. Durations of temperature increases from threshold levels indicate that land use changes from current agriculture conditions to urbanization may change stream water temperatures for 9% of the time by 1 °C, and 2% of the time by 2 °C for distances of 1000 m downstream, because of land use change from agriculture to low-density urbanization, and for 20% of the time by 1 °C, and 4% of the time by 2 °C at distances of 1000 m downstream with land use change to high-density urbanization. With climate change RCP 4.5 Scenario in 2050 (Base, for a Wet Year—2017), the continuous amount of time the stream water temperature remains at elevated temperatures of more than 3 °C (from 5000 m to 25,607 m from the most upstream point of Fletchers Creek) for a distance of 20,000 m is more than 13 h. These elevations in temperature may have serious implications for flora and fauna in the creek, particularly impacting the cold-water and mixed-water fish species.
Distribution and Ecological Risk Assessment of Pharmaceuticals and Personal Care Products in Sediments of North Canal, China
Authors: Pei Shasha , Li Binghua , Wang Boxin , Liu Jingchao , Song Xuanying
Published: June 2022

The pollution of water bodies by pharmaceuticals and personal care products (PPCPs) has attracted widespread concern due to their widespread use and pseudo-persistence, but their effects on sediments are less known. In this study, solid-phase extraction-high performance liquid chromatography–tandem mass spectrometry (SPE-LC/MSMS) was used to investigate the occurrence and ecological risks of five typical pharmaceuticals and personal care products (PPCPs) in thirteen key reservoirs, sluices, dams, and estuaries in the Haihe River Basin. At the same time, the PPCP exchanges of surface water, groundwater, and sediments in three typical sections were studied. Finally, the PPCP’s environmental risk is evaluated through the environmental risk quotient. The results showed that the five PPCPs were tri-methoprazine (TMP), sinolamine (SMX), ibuprofen (IBU), triclosan (TCS), and caffeine (CAF). The average concentration of these PPCPs ranged from 0 to 481.19 μg/kg, with relatively high concentrations of TCS and CAF. The relationship between PPCPs in the surface sediments was analyzed to reveal correlations between SMX and TMP, CAF and IBU, CAF and TCS. The risk quotients (RQ) method was used to evaluate the ecological risk of the five detected PPCPs. The major contributors of potential environmental risks were IBU, TCS and CAF, among which all the potential environmental risks at the TCS samples were high risk. This study supplemented the research on the ecological risk of PPCPs in sediments of important reaches of the North Canal to reveal the importance of PPCP control in the North Canal and provided a scientific basis for pollution control and risk prevention of PPCPs.
Sizing of a Plug-In Hybrid Electric Vehicle with the Hybrid Energy Storage System
Authors: Tu Jian , Bai Zhifeng , Wu Xiaolan
Published: June 2022

For plug-in hybrid electric vehicle (PHEV), using a hybrid energy storage system (HESS) instead of a single battery system can prolong the battery life and reduce the vehicle cost. To develop a PHEV with HESS, it is a key link to obtain the optimal size of the power supply and energy system that can meet the load requirements of a driving cycle. Since little effort has been dedicated to simultaneously performing the component sizing of PHEV and HESS, this paper proposes an approach based on the particle swarm optimization (PSO) algorithm to simultaneously determine the sizes of the engine, motor, battery and supercapacitor (SC) in a PHEV with HESS. The drivetrain cost is minimized in a different all-electric range (AER)—and depends on the battery type—while ensuring the driving performance requirements. In addition, the effects of the power system and drive cycle on the component sizes were analyzed and compared. The simulation results show that the cost of the PHEV drivetrain with the Ni-MH battery/SC HESS is reduced by up to 12.21% when compared to the drivetrain with the Li-ion battery/SC HESS. The drivetrain cost is reduced by 8.79% when compared to analysis-based optimization. The type of power supply system and drive cycle can significantly affect the optimization results.
Abnormal wear patterns in different types of malocclusions
Authors: Smirnova А. A. , Gavrilova O. A. , Fedorova K. V. , Sokolova L. N. , Bobrov D. V.
Published: June 2022

Relevance. Abnormal tooth wear is a disease characterized by excessive loss of hard tissues of the erupted teeth, unrelated to the physiological process. This disease prevalence appears to have increased in recent decades. The literature often indicates malocclusion as the cause of abnormal tooth wear, though it rarely notes the impact of abnormality type on individual teeth.

Purpose. The study aimed to establish the relationship between the abnormality type and the degree and nature of abnormal tooth wear in children at different stages of dentition development.

Materials and methods. The study analyzed the examination results of 266 patients aged 8 to 18 years without a history of previous orthodontic treatment. The orthodontic diagnosis was made based on the ICD-10. The patients formed the groups according to the stage of dentition development. The tooth wear index (TWI) (only permanent teeth) evaluated the abnormal tooth wear. The maximum TWI score determined the grade of abnormal tooth wear. The study statistically analyzed the data by StatTech v. 2.5.6, compared the data using the Kruskal – Wallis test (ANOVA) and Pearson chi-square, and made post hoc comparisons using Dunn’s test with Holm adjustment. The prognostic model was developed using the linear regression method.

Results. The children and adolescents showed a sufficiently high prevalence of abnormal tooth wear (69.2% had at least one tooth with a tooth wear facet), tooth-wear grade increased with age (correlation coefficient rxy = 0.674, p < 0.001). The risk of abnormal tooth wear in distal and deep occlusion appeared to increase at incisors and canines (p < 0.001), in mesial occlusion - molars and premolars, in open bite – molars (p < 0.001). The combination of distal and deep occlusion led to severe abnormal tooth wear.

Conclusion. The study results showed that wear patterns differ in various types of malocclusions. The received data will help to develop effective measures to prevent abnormal tooth wear.
Brecha digital de género
Authors: Donoso Vázquez Trinidad , Estradé Sonia , Vergés Nuria
Published: June 2022

La brecha digital de género no es un problema personal de las mujeres y otros colectivos discriminados, sino que se tiene que entender como un problema que emerge de estructuras sociales más básicas. Por tanto, requiere de un cuestionamiento profundo de cómo el género atraviesa a las prácticas educativas y profesionales en nuestro sistema educativo, de la escuela a la universidad. En relación a las disciplinas STEM, estas normas culturales y prácticas educativas tienen que ver con estereotipos y roles de género, con la simbología de los espacios donde se construyen estas disciplinas, con las expectativas del profesorado diferenciadas para chicos y chicas, con el imaginario social construido alrededor de la ciencia y la tecnología, así como con las aspiraciones que finalmente desarrollan las chicas influidas por los factores anteriores. También los contextos profesionales relacionados con la revolución digital se construyen de formas codificadas como masculinas. La sociedad en su conjunto se ve perjudicada por la escasa presencia de mujeres en estos campos, ya que se necesitan equipos diversos para encontrar las mejores soluciones tecnológicas para los retos y problemas a los que se enfrenta. Es necesario desarrollar políticas educativas encaminadas a romper la brecha digital. En este capítulo se abordan diversas iniciativas llevadas a cabo desde la Universidad de Barcelona.
Epístola sobre os servidores do califa
Authors: Gemignani Beatriz , Jarouche Mamede
Published: June 2022

Tradução do árabe ao português de Epístola sobre os servidores do califa, de Ibn Almuqaffa (رسالة [في] الصحابة), por Beatriz Negreiros Gemignani e Mamede Mustafá Jarouche.
رسالة [في] الصحابة
Authors: عبد اللهِ بن المقفَّع
Published: June 2022

Texto original em árabe editado por Beatriz Negreiros Gemignani e Mamede Jaruche.
Livros como ferramentas do conhecimento: tradução do sexto capítulo do livro Almucīd fī Adab Almufīd wa Almustafīd, de ‘Abd Albāsit Alᶜalmawī
Authors: Criado Pedro
Published: June 2022

O presente artigo consiste numa tradução do sexto capítulo do livro Almuᶜīd fī Adab Almufīd wa Almustafīd (O assistente da literatura útil e proveitosa), intitulado “Questões sobre o decoro para com os livros, que são a ferramenta do conhecimento, e o que se relaciona a como corrigi-los, consertá-los, armazená-los, trabalhar com eles, comprá-los, emprestá-los, copiá-los e mais”, escrito pelo pregador damasceno ᶜAbd Albāsiṭ Alᶜalmawī (907-981 H./1502-1573 d.C.). Tal capítulo aborda o manejo de livros, tanto do ponto de vista da circulação e da aquisição, como do ponto de vista da elaboração escrita. Para isso, o contexto enfocado é o dos estudos religiosos islâmicos, e toma como exemplo casos pertinentes, sobretudo, ao chamado ᶜilm alḥadīṯ ou “ciência profética”.
breve história das traduções árabes do Tetrabiblos de Ptolomeu
Authors: Machado Cristina
Published: June 2022

Este artigo apresenta as primeiras traduções da obra astrológica de Ptolomeu, o Tetrabiblos, que foi traduzido num dos maiores episódios tradutórios da história, o movimento de tradução ocorrido nos séculos VIII-X em Bagdá. O objetivo aqui é explicitar o papel da tradução na circulação das ciências, e o caráter de constructo histórico de obras tão antigas. Não se trata apenas de um texto escrito por Ptolomeu, trata-se de uma comunidade textual composta por todas as escritas e reescritas nas mais diversas línguas e culturas, ou seja, o Tetrabiblos, que, como qualquer texto, cresce a cada leitura. É importante trazer para a tradução científica as questões debatidas em relação à tradução literária, afinal, apesar de suas especificidades, passa pelos mesmos processos linguísticos e retóricos que qualquer outra atividade humana. Por fim, e não menos importante, nunca é demais lembrar as raízes árabes da ciência ocidental.
Ideias em fluxo: imaginação política e intelectual na Présence Africaine (1950-1960)
Authors: Brescia dos Reis Raissa
Published: June 2022

Neste artigo, pretende-se investigar, tendo como ponto de partida artigos, dossiês e editoriais da Présence Africaine do final da década de 1950 e do início dos anos de 1960, um fluxo de ideias políticas que foi central para o debate intelectual e político no continente africano e em outras regiões do planeta. Como veículo da imaginação dos futuros Estados africanos e também de sua inserção em projetos políticos coletivos, pan-africanos certamente, mas ao mesmo tempo terceiro-mundistas, a Présence Africaine é aqui considerada fonte privilegiada para compreender agendas e movimentos de solidariedade internacionais que visaram ao rompimento de lógicas imperiais e assimétricas do poder. Seguindo alguns sentidos deste imbricado fluxo, que se distribuem ao longo do espaço e também do tempo, o objetivo é duplo: compreender a projeção de futuros possíveis e conectados e entendê-los como ideias e conceitos políticos vividos no século XX que procuraram fomentar novos eixos de protagonismo político e epistemológico.
Geology of Crystal Geyser and environmental implications of its effluent, Grand County, Utah
Authors: Baer James L. , Rigby J. Keith
Published: June 2022

A geologic study was done in conjunction with an environmental impact investigation of the Crystal Geyser, 6.5 kilometers (4 miles) southeast of the community of Green River, Utah. Periodic eruptions of salt-laden waters from the geyser flow into the Green River and provide a source of salts into the Colorado River drainage system. Eruptions average 120 cubic meters (0.1 acre feet) of CO2 charged water with abundant Na, Ca, K. and Mg salts. The mineral laden waters form tufa deposits along a nearly 2 kilometer (1.3 miles) exposure that is situated along and controlled by the Little Grand Wash Fault. Three distinctive levels of tufa deposits indicate that the mineral-laden springs have been active along the fault for several hundred thousand years. Several methods considered to control the salt laden effluent were rejected as either impractical or too expensive.
Organization of specialized assistance to the patients with seriously thermal burn in Primorsky region
Authors: Griban P. А. , Usov V. V. , Terehov S. М. , Bondarchuk D. V. , Maystrovskiy K. V. , Polezhaev A. A. , Obydennikova T. N. , Sotnichenko S. А. , Partin А. P.
Published: June 2022

The review examines the organization of specialized medical care for victims having burn injury in Primorsky Region. Thermal injury continues to occupy a significant place in the structure of domestic and industrial injuries in the Russian Federation. Every year, more than 300 calls about patients having thermal damage are received in Primorsky Region TCDM. For five years (from 2017 to 2021), specialists of the Primorsky TCDM made 178 visits to regional medical institutions, 160 seriously burned people were delivered to the specialized department by ground and air transport. There is still a need for round-the-clock collection of medical and sanitary information about the severely burned patients in medical institutions of Primorsky Territory and the organization of interaction with a specialized department. The Regional TCDM organized timely evacuation of patients having deep thermal traumas to the burn unit of FEDMC. It allowed performing surgical treatment tactics, including effective early removal of necrotic tissues. An analysis of appeals to the dispatcher's office of the Territorial Center for Disaster Medicine regarding severe thermal injury, as well as a statistical analysis of victims from remote areas of the Primorsky Territory delivered to the burn department in Vladivostok were conducted. It is emphasized that timely transportation of patients having severe burn injuries is the first step in the system of active treatment of victims which allows conducting early surgical treatment and reducing the number of complications, and improving treatment results.
The morbidity rate of COVID-19 among medical workers: risk factors of getting infected and the development of severe clinical forms
Authors: Platonova T. A. , Golubkova A. A. , Sklyar M. S. , Smirnova S. S. , Karbovnichaya E. A. , Nikitskaya A. D.
Published: June 2022

Objective: The aim of the study was to assess non-professional risk factors for COVID-19 infection in medical workers and predictors of the development of severe clinical forms of the disease.Methods: The authors developed two online questionnaires to analyze the features of the clinical manifestations of COVID-19 and the impact of various risk factors on the employees of the Ministry of Defense. Questionnaires were filled out by 366 medical workers who had previously had a new coronavirus infection, and 306 employees who were intact for this disease.Results: When assessing the risk factors for SARS-CoV-2 infection, it was found that factors such as irregular preventive intake of vitamin D and multivitamins increased the risk of infection of employees of the Ministry of Defense by 1.5-2 times. The majority of employees (281 or 76.8%) suffered the disease in the form of acute respiratory infection (ARI) of mild or moderate severity, 23.2% (85 people) had a lesion of the pulmonary parenchyma in the form of interstitial pneumonia. The most severe clinical forms of COVID-19 occurred in employees in the age group older than 40 years, with a body mass index corresponding to overweight (more than 25.0), having chronic diseases of the genitourinary system, diabetes mellitus, and low physical activity.Conclusions: According to the results of the conducted study, the main clinical manifestations of the new coronavirus infection among medical workers, their severity in various forms of the disease, the leading non-professional risk factors for infection and predictors of the development of more severe clinical forms of COVID-19 were determined.
A case of surgical treatment of lobar emfysema in a newborn
Authors: Cyleva Yu. I. , Belov S. A. , Shatoba E. V. , Yurkina M. V.
Published: June 2022

Lobar emphysema still remains a significant issue of pediatric surgery. It accounts for 14% of all congenital anomalies of the respiratory system. The development of intra-thoracic tension syndrome leads to a critical oxygen supply disorder. The main method of treatment of congenital pathology in case of severe respiratory disorders is operative. However, an unrecognized anomaly of lung development leads to incorrect surgical tactics. A clinical case of surgical treatment of a newborn with lobar emphysema of the lung complicated by intra-thoracic tension syndrome is presented. Video-assisted thoracoscopic resection of the lower lobe of the left lung was performed. Six months after the intervention, a complete restoration of the function of external respiration was detected. Timely full-fledged surgical treatment contributed to the elimination of the cause of the development of an urgent condition in congenital lung abnormality, effective restoration of organ functions and favorable outcome.
Generalized approach to building computer’s tools of preventive medicine for home using
Authors: Файнзільберг Леонід Соломонович
Published: June 2022

For early detection and timely correction of imbalances in the body that can lead to the development of various diseases, personalized devices are needed with which one can control the current state of the body at home. The purpose of the article is to develop a universal approach to the construction of such tools and, using examples of solving urgent problems, to demonstrate its effectiveness. A distinctive feature of the proposed approach is that the user at home has the ability to form a training sample of observations of his physiological indicators, according to which two integral characteristics are automatically calculated: the reference result, which is closest to all other observations, and the value, characterizing the average deviation of the results. Personalized diagnostic rules are proposed that ensure an increase in the reliability of decisions about the current functional state of the user and an assessment of the risk of a possible development of pathology. The proposed rules form the basis of original preventive medicine for home use, including the intelligent PHASEGRAPH® electrocardiograph for diagnosing myocardial ischemia at early stages, AI-RHYTHMOGRAPH software applications for determining heart rate variability parameters and AI-ARTERIOGRAPH for integral assessment of properties blood vessels, an intelligent blood pressure monitor that measures the long-term variability in blood pressure between doctor visits, and an intelligent stethoscope for detecting respiratory distress at home. Further development of the proposed approach will make it possible to create personalized means of assessing visual acuity and hearing acuity at home, control of the vestibular apparatus, essential tremor and other means.
Bir Sahne Olarak Gündelik Hayat: Benlik ve Başkaları
Authors: YALÇİ Abdurrahman
Published: June 2022

Birey, kendisinden önce düzenlenmiş olan bir dünyaya gözlerini açmaktadır. İçerisine doğulan toplum, gündelik etkileşimler sırasında ve aracılığıyla öğrenilmekte; ilk dönemden itibaren benlik bilinci de bu sürece bağlı olarak şekillenmektedir. Bilhassa rutin pratiklerin güven sağlayan yönü üzerinden gündelik hayatla ontolojik bir ilişki geliştirilmekte, pratik bilinç başkalarınca onanma temelinde kurgulanmaktadır. Bedeni ile etkileşim ağına dâhil olan birey, bir sunum gerçekleştirmekte ve beden politikasıyla ilişki içerisinde yaydığı izlenimi kontrol altında tutmak istemektedir. Bu çerçevede çalışmamız, gündelik pratiklerin bireyi kuşatıcı yönünü ve kimliğin kişilerarası boyutunu esas alarak sunumun kaçınılmaz oluşunu vurgulamaktadır. Böylelikle kimliğin ve ilişkili olarak pratik bilincin inşasında etkileşimin belirleyici yanını ortaya koymayı amaçlamaktadır. Metodolojik yol gösterici kavram olarak etkileşime odaklanan araştırmamız, yine bu bağlam üzerinden bir kavram repertuvarı kullanmaktadır.
Presentación muco-cutánea de la enfermedad de Behcet. Corcordancia de enfoques terapéuticos. Reporte de caso y revisión de literatura
Authors: Paucar-Lescano Patricia K.
Published: June 2022

La enfermedad de Behçet es una vasculitis inflamatoria sistémica crónica de curso recurrente-remitente, de etiología no clara, descrito en pacientes que tuvieron como factor desencadenante: infecciones bacterianas, virales y autoantígenos anormales en pacientes con predisposición genética; puede ser reconocida por hallazgos clínicos debido a la ausencia de una prueba de laboratorio de diagnóstico universalmente aceptada. Las úlceras orales y genitales, así como las lesiones de vasculitis cutáneas son consideradas marcadores de enfermedad de Behcet y con frecuencia preceden a otras manifestaciones. Las lesiones mucocutáneas ocupan un lugar destacado en la presentación y diagnóstico, por lo tanto su reconocimiento puede permitir su diagnóstico y tratamiento temprano, con resultados beneficiosos para el pronóstico del paciente, pero no son las únicas lesiones que presenta ésta enfermedad por lo que se realizó una revisión de literatura.
Diagnóstico de arritmias ventriculares en pacientes con síndrome post COVID-19
Authors: Aponte-Hidalgo Baltazar , Coelho-Lugo Tony D. , Escalona-García Lucymar R. , Figuera-Aparicio María V. , Hernández-Cabanzo Suheil A. , García-Calcurian Yuraima del Carmen , Lupi-Diaz Mildred N.
Published: June 2022

Objetivo. Identificar arritmias ventriculares en pacientes que padecieron esta enfermedad (síndrome post COVID-19). Materiales y métodos. Estudio descriptivo, prospectivo y transversal. La muestra correspondió a 79 pacientes infectados por COVID-19 diagnosticados, tratados y egresados de una institución venezolana. Las variables de estudio más importantes fueron: severidad por COVID-19 y tipos de arritmias ventricular. Se utilizó un instrumento de recolección de datos validado por juicio de expertos. Se empleó el Holter del ritmo para la evaluación cardiovascular. Se utilizo estadísticos descriptivos y gráficos-figuras. Resultados. El 45,57% de los pacientes fueron femeninos y 54,43% masculino, la edad promedio fue de 56 años, con predomio del grupo etario entre 41 y 60 años (49,4%). De acuerdo con la sintomatología, el 31,65% de los pacientes tuvo una enfermedad leve, el 59,5% moderada y un 8,86% severa. Los tipos de arritmias más frecuentes según el tipo de COVID-19 padecido, fueron: Ritmo Sinusal (28%) en casos leves; las Taquicardias Sinusal (26%) e Inapropiada (26%) para moderados y Taquicardia Ventricular (43%) en los casos severos. En cuanto a la evolución clínica del paciente, en el proceso de la enfermedad leve la evolución fue satisfactoria de un 100%; en la moderada la evolución tuvo un 88,5%, y en la severa de 16,6%. Conclusión. A través del Holter se pudo determinar el tipo de arritmia que padecían los pacientes, la cual fue diferente de acuerdo al grado de severidad de la enfermedad, por lo que esta información pudiera ser considerada como un factor predictivo.
Selectivity of dominant surface plasmon polariton modes using thin metal waveguides with grating structures
Authors: Hamashima Kou , Wu Di , Kishimoto Seiya , Inoue Shuichiro , Ohnuki Shinichiro
Published: June 2022

The conversion of incident light to surface plasmon polaritons (SPPs) was verified for a dielectric-metal-dielectric waveguide with a grating structure. The dominant SPP mode with respect to the propagation distance could be selected by adjusting the thickness of the gold film. To realize highly efficient light-to-SPPs conversion, the grating parameters for a realistic length of plasmonic waveguides were optimized using a recently developed numerical technique, FDCFD-FILT. This novel technique is the combination of finite-difference complex-frequency-domain (FDCFD) with fast inversion of laplace transform (FILT) and a powerful tool for designing plasmonic waveguides and investigating propagation characteristics efficiently.
A large unidirectional magnetoresistance in Fe–Sn heterostructure devices
Authors: Shiogai Junichi , Fujiwara Kohei , Nojima Tsutomu , Tsukazaki Atsushi
Published: June 2022

Unidirectional magnetoresistance (UMR) is an attractive magnetic-field sensing technique as it enables us to detect the in-plane direction of the external magnetic field with a single element. However, the UMR amplitude is typically several orders of magnitude smaller than those of other directional magnetoresistances exhibited in ferromagnetic thin films, hindering sensing applications using the UMR. For a directional magnetic sensor using the UMR, an in-depth understanding of the mechanisms of the UMR and its enhancement are highly desirable. In this study, the structural dependence of the UMR in Fe–Sn heterostructure devices is investigated. We find a weak dependence of the UMR on interface configuration in the oxide cap/Fe–Sn heterostructures on various oxide substrates. In contrast, the normalized UMR amplitude is enhanced by a factor of 27 with increasing Fe–Sn layer thickness from 4.0 to 100 nm. These results suggest that the magnetothermal effect dominates the large UMR in the Fe–Sn heterostructure devices.
Mid-infrared free space wavelength beam splitter based on dual frequency reflective metalens
Authors: Wu Boqi , Chi Yaodan , Zhang Hengxu , Zhao Chunlei , Zhao Yang , Lv Sa , Yang Jia
Published: June 2022

We present a reflective metalens with a hybrid antenna structure, which can realize the beam splitting function of two wavelengths in free space. A key feature of our design is the presence of phase-independent regulation at two different wavelengths in each nanoresonator, which can generate a specific phase or a continuous sweep in the range of 0° to more than 300°. To demonstrate the wavefront manipulation ability of the array, we simulated the characteristics of wavelength beam splitting, especially the free space wavelength beam splitter with a focal length of 300 μm and a relative focal position of 100 μm.
Pengaruh Profitabilitas, Leverage dan Ukuran Perusahaan terhadap Kebijakan Dividen
Authors:   Universitas Hayam Wuruk Perbanas Surabaya, Surabaya, Ridhwan Achmad , Dwiati Agustina Ratna ,   Universitas Hayam Wuruk Perbanas Surabaya, Surabaya
Published: June 2022

Abstract: Purpose: This study examines the factors that can affect dividend policy. The factors discussed are profitability, leverage and company size. Therefore, the purpose was to determine whether profitability, leverage and firm size can have an influence on the occurrence of dividend policy. Research Methodology: This research was conducted quantitatively. The population used is the companies engaged in manufacturing and also listed on the Indonesia Stock Exchange for 2016-2018 period. Purposive sampling method was used for determining a sample data. The total data is 149 data. The data testing method uses multiple regression analysis. Results: This research have a result that conclude that profitability have an effect toward dividend policy but leverage and firm size cannot affect dividend policy. Limitations: Generalization of result cannot be used for this research other than manufacturing companies and there are 91% other factors that can affect dividend policy. Contribution: This research contributes in terms of empirical evidence that can be used by investors and/or potential investors to learn about factors that can affect company policy regarding dividens. Keywords: 1. Dividend Policy 2. Profitability 3. Leverage 4. Firm Size
Pemberdayaan Masyarakat Melalui Badan Usaha Milik Desa sebagai Sentra Produk Pangan Berbasis Jagung dan Mete
Authors:   Fakultas Pertanian Universitas Nusa Cendana, Nusa Tenggara Timur, Abidin Zainal , Harini Titik Sri ,   Fakultas Pertanian Universitas Nusa Cendana, Nusa Tenggara Timur, Jati Hironnymus ,   Fakultas Ekonomi dan Bisnis Universitas Nusa Cendana, Nusa Tenggara Timur, Jutomo Lewi ,   Fakultas Kesehatan Masyarakat Universitas Nusa Cendana, Nusa Tenggara Timur, Puspitaningtyas Gabriella Dhyang Dyah ,   Fakultas Pertanian Universitas Nusa Cendana, Nusa Tenggara Timur, Wanno Sarniyati Wini ,   Fakultas Pertanian Universitas Nusa Cendana, Nusa Tenggara Timur, Tamelab Matris Awardi ,   Fakultas Pertanian Universitas Nusa Cendana, Nusa Tenggara Timur, Sanan Jefrianus Toy ,   Fakultas Pertanian Universitas Nusa Cendana, Nusa Tenggara Timur, Beti Meki Jefry ,   Fakultas Pertanian Universitas Nusa Cendana, Nusa Tenggara Timur
Published: June 2022

Abstract: Purpose: To increase the knowledge and skills of partners in corn and cashew-based food processing and knowledge of distribution permits, improve the quality and selling value of products using Appropriate Technology, organize the organization and management of food processing, and assess the role of Village-Owned Enterprise (VOE) in community empowerment. Method: Solving partner problems are replacing manual equipment with appropriate technology, counseling, training, assistance in processing corn and cashews, improving organization and management, and assisting in managing distribution permits. The target of the activity is the partner farmer group of the food processing business unit of the Sillu Raya VOE. Results: Achieved were an increase in knowledge about the importance and management of distribution permits, more effective and efficient processed food production processes, mastery of appropriate technology, halal-certified and labeled products, improved structure and management of food processing business units, Sillu Raya VOE have not play an effective role in empowering the community's economy. The knowledge and skills of partners increase, partners master appropriate technology and the selling value of marning corn and various processed cashew nuts increases. Assistance will be by seeking food safety education with resource persons from the Food and Drug Monitoring Agency of East Nusa Tenggara as a condition of obtaining a distribution permit for market expansion. Contribution: To increasing the knowledge and skills of the community so that they are independent in food processing in order to increase the added value of the products produced. Keywords: 1. Community empowerment 2. economy 3. VOE 4. Technology 5. food processing 6. corn 7. cashew 8. organization 9. management
Supporting Probabilistic Constellation Shaping in 5G-NR Evolution
Authors: Hu Sha , Wang Hao , Semnov Sergei
Published: June 2022

It is well-known that probabilistic constellation shaping (PCS) provides a shaping-gain of 1.53dB asymptotically as signal-to-noie (SNR) increases. This is however, under ideal assumptions that the considered system operates in optimal sense and can achieve the Shannon capacity. While in practice the system can operate below the capacity, and in particular when block-error rate (BLER) and throughput are considered which are the most relevant merits, the benefits of PCS are unclear. In this paper, we propose a PCS-transceiver for the fifth-generation new-radio (5G-NR) that supports quadrature-amplitude-modulation (QAM) constellations shaped with PCS, namely, PCS-QAM. We put a special interest in the throughput achieved under a stringent BLER constraint, and validate the effectiveness of PCS with practical detection and decoding algorithms, in comparison to conventional uniform QAM constellations, namely, Uniform-QAM. We also analyze the properties of power-gain, entropy-loss, and peak-to-average power-ratio (PAPR), in connections to the PCS design. Further, we derive a necessary and sufficient condition for a PCS-QAM to outperform a Uniform-QAM in throughput, and prove that the normalized entropy-loss with the PCS-QAM must be less than the BLER obtained with the Uniform-QAM. Furthermore, we demonstrate that the PCS-transceiver is flexible in rate-adaption without affecting the encoder, and yields a better throughput-envelope by mitigating the SNR-gaps between two adjacent modulation and coding scheme (MCS) indexes in 5G-NR.
An investigation of cyber-attacks and security mechanisms for connected and autonomous vehicles
Authors: Gupta Sandeep , Maple Carsten , Passerone Roberto
Published: June 2022

Connected and autonomous vehicles (CAVs) can fulfill the emerging demand for smart transportation on a global scale. Such innovations for transportation can bring manyfold benefits from fully autonomous driving services to proactive vehicle monitoring and traffic management. However, given the complexity involved in the deployment of CAVs, zero-tolerance safety, and security measures must be incorporated to avert vehicle immobilization, road accidents, disclosure of sensitive data, or any potential threats. In this article, we present a reference architecture of CAVs to investigate existing and emerging cyber threats and thus, derive a common attack taxonomy for a CAVs ecosystem based on our studies of academic literature and industry white papers. After that, we discuss security mechanisms for the CAVs ecosystem that can be useful for the safe and secure transportation of passengers from one destination to another. Our work can provide insights to security engineers and system architects for investigating security problems using a top-to-bottom approach and subsequently, identifying optimal security solutions for CAVs.
SAP: A Secure Low-latency Protocol for Mitigating High Computation Overhead in WI-FI Networks
Authors: Jain Vineeta , Wetzker Ulf , Laxmi Vijay , Gaur Manoj Singh , Mosbah Mohamed , Mery Dominique
Published: June 2022

 The increase in popularity of wireless networks in industrial, embedded, medical and public sectors has made them an appealing attack surface for attackers who exploit the vulnerabilities in network protocols to launch attacks such as Evil Twin, Man-in-the-middle, sniffing, etc., which may result in economic and non-economic losses. To protect wireless networks against such attacks, IEEE 802.11 keep updating the protocol standards with new and more secure versions. There has always been a direct correlation between attacks and the improvement of protocol standards. As the sophistication of attacks increases, protocol standards tend to move towards higher security, resulting in a significant rise in both latency and computational overhead, and severe degradation in the performance of low-latency applications such as Industrial Internet of Things (IIoT), automotive, robotics, etc. In this paper, we make the first attempt to highlight the importance of both latency and security in wireless networks from implementation and performance perspective. We make a review of existing IEEE 802.11 protocols in terms of security offered and overhead incurred to substantiate the fact that there is a need of a protocol which in addition to providing optimum security against attacks also maintains the latency and overhead. We also propose a secure and low-latency protocol known as Secure Authentication Protocol (SAP) which operates in two phases - registration and authentication, where the first phase is a one time process implemented using asymmetric cryptography and the second phase is implemented using symmetric cryptography. The protocol is structured in a way that it maintains the original structure of IEEE 802.11 protocols and performs both phases using fewer messages than existing protocols. By simulating the protocol using well-established OMNeT++ simulator, we proved that the proposed protocol incurs a low computation overhead, making it ideal for low-latency applications. We extensively verified the security properties of the proposed protocol using formal verification through widely-accepted Scyther tool. Finally, we perform a comparative analysis of SAP with existing IEEE 802.11 wireless network protocols to highlight the improvement.
ricordo di Giovanni Cruciani
Authors: Calamini Gianfranco
Published: June 2022

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المرجعية الدينيّة في نظر الدارسين – دراسة في الآراء العلميّة والسياسيّة
Authors: الساعدي رحيم , جبر عهود
Published: June 2022

لا يوجد
الإصلاح و التجديد في فكر السيد هبة الدين الحسيني الشهرستاني ( قدس)
Authors: حافظ حسين , العتابي ليث
Published: June 2022

لا يوجد
اطر التجديد في العمل الاسلامي في العراق بعد الاحتلال البريطاني 1918 - 1920
Authors: مهدي سؤدد
Published: June 2022

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تجديد مفاهيم علوم القرآن عند السيد الخوئي في كتابه البيان
Authors: العسكري ساجد
Published: June 2022

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دور المرجعية الدينية الرشيدة في اصلاح عناصر العملية التعليمية الجامعية في المجتمع العراقي بعد التعليم. بعد احداث 9/4/2003 دراسة استنباطية
Authors: الزبيدي صباح
Published: June 2022

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دور مؤسسات الخدمة الاجتماعية ( مراكز الارشاد الاسري ) التابعة للمرجعية الرشيدة في الاصلاح الاجتماعي
Authors: عبد الزهرة منتهى , جبار وفاء
Published: June 2022

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الخطاب المرجعي الاجتماعي وأثره في تحقيق السلم المجتمعي
Authors: الكشفي عبد الكريم , شويخ هادي
Published: June 2022

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السلم الوطني والعيش المشترك في فكر السيد علي السيستاني
Authors: عبد ناصر عمار
Published: June 2022

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رؤية المرجعية الدينية لدور الأمم المتحدة في العراق ٢٠٠٣م – ٢٠٠٦م
Authors: المياحي شكري
Published: June 2022

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دور المرجعية في تعزيز الوحدة الوطنية السيد السيستاني أنموذجا
Authors: مهنا باسل , الخرسان امير
Published: June 2022

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المرجعية الدينية ودورها في تجسيد مشروعية الدولة الدستورية قراءة في مفهوم الدستور والمجلس التشريعي (البرلمان)في الفكر السياسي الشيعي العراق وإيران انموذجا"
Authors: الفتلاوي صباح
Published: June 2022

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موقف المرجعية الدينية من الاحداث السياسية في العراق عام (2003- 2007) دراسة تاريخية
Authors: ابراهيم علياء
Published: June 2022

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المرجعية وموقفها من انظمة الحكم (السيد محسن الحكيم الطباطبائي أنموذجاً ) ( 1963 – 1970 )
Authors: ال خليفة فاتن
Published: June 2022

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المرجعية الدينية كرامه وطن ومواجهه مستمرة للاستعمار والإرهاب
Authors: شويخ هادي
Published: June 2022

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Tubular Ectasia of the Rete Testis: A Case Report
Authors: Andaloussi Zineb Abbad El , Arbouni Hind , Laanait Ali , Tabakh Houria , Siwane Abdellatif , Kacimi Omar , Touil Najwa , Chikhaoui Nabil
Published: June 2022

Aims: To show the value of ultrasound in the diagnosis of tubular ectasia of the rete testis. Case presentation: We report the case of a 60 year old patient, without any notable history, in whom a cystic dilatation of the rete testis was revealed, following a scrotal trauma. Discussion and conclusion: Tubular ectasia of the rete testis is a pathologically benign process with a complex and varied etiology. It should be differentiated from neoplastic disease of the test is based on the patient's age, mode of presentation, tumor marker status, and characteristic findings on ultrasound and Doppler studies. Knowledge and diagnosis of this clinical entity may avoid unnecessary surgery in these patients.
Effectiveness of Corporate Governance on SMEs in the Stock Broking Firms in Nigeria
Authors: Oladimeji Oladimeji , Abiodun Johnson , Aladejebi Aladejebi , Olufemi Olufemi
Published: June 2022

Corporate Governance is a broad term that defines the methods, structure and the processes through which the business and affairs of an organisation is managed and directed in the best interest of the company and other stakeholders. An effective Corporate Governance mechanism eliminate the conflict of ownership and control by separately defining the interest of shareholders and managers. This paper reviews the effectiveness of corporate governance on SMEs in the stock broking firms in Nigeria. Questionnaire was formulated using five-point Likert scale to collect data from a sample size of 200 stock broking owners and managers using convenience sampling technique. Valid responses were received from 171 respondents which was analysed using SPSS. The results shows that stock broking firms shows higher responsibility and commitment to corporate governance, the structure and functioning of the board of directors and the control environment and process complied with corporate governance structure while transparency and disclosure requirements positively affect the overall performance by the SMEs in the stock broking firms. The study suggest that there is need for more awareness on the importance of good corporate governance on SMEs in Nigeria. Also, the regulatory authorities should ensure close and proper monitoring of the SMEs in the stock broking firms to ensure that the corporate governance gains achieved are not only sustained but improved upon for the stakeholders’ benefits.
Hyporexia and cellular/biochemical characteristics of pleural fluid as predictive variables on a model for pleural tuberculosis diagnosis
Authors: Santos1 Ana Paula , Ribeiro-Alves2 Marcelo , Corrêa3 Raquel , Lopes3 Isabelle , Almeida Silva3 Mariana , Thomaz Mafort1 Thiago , Leung1 Janaina , Silva Rodrigues3 Luciana , Rufino1 Rogério
Published: June 2022

Objectives: Pleural tuberculosis (PlTB) diagnosis is a challenge due to its paucibacillary nature and to the need of invasive procedures. This study aimed to identify easily available variables and build a predictive model for PlTB diagnosis which may allow earlier and affordable alternative strategy to be used in basic health care units. Methods: An observational cross-sectional study compared PlTB and non-TB patients followed at a tertiary Brazilian hospital between 2010 and 2018. Unconditional logistic regression analysis was performed and a Decision Tree Classifier (DTC) model was validated and applied in additional PlTB patients with empiric diagnosis. The accuracy (Acc), sensitivity (Se), specificity (Sp), positive and negative predictive values were calculated. Results: From 1,135 TB patients, 160 were considered for analysis (111 confirmed PlTB and 49 unconfirmed PlTB). Indeed, 58 non-TB patients were enrolled as controls. Hyporexia [adjusted odds ratio (aOR) 27.39 (95% CI 6.26 - 119.89)] and cellular/biochemical characteristics on pleural fluid (PF) (polimorphonuclear in two categories: 3-14% aOR 26.22, 95% CI 7.11 - 96.68 and < 3% aOR 28.67, 95% CI 5.51 - 149.25; and protein = 5g/dL aOR 7.24, 95% CI 3.07 - 17.11) were associated with higher risk for TB. The DTC constructed using these variables showed Acc=87.6%, Se=89.2%, Sp=84.5% for PlTB diagnosis and was successfully applied in unconfirmed PlTB patients. Conclusion: The DTC model showed an excellent performance for PlTB diagnosis and can be considered as an alternative diagnostic strategy by using clinical patterns in association with PF cellular/biochemical characteristics, which were affordable and easily performed in basic health care units.
Impact of prone positioning on patients with COVID-19 and ARDS on invasive mechanical ventilation: a multicenter cohort study
Authors: C A Cunha1 Marieta , Schardonga Jociane , Camponogara Righi2,3 Natiele , Lunardi4 Adriana Claudia , Nery de Sant’Anna4 Guadalupe , Padrão Isensee4 Larissa , Fagundes Xavier4 Rafaella , Roberta Brambatti2 Kaciane , Pompeu4 José Eduardo , Frâncio5 Fabiano , Martins Faria6 Luiza , Astolfi Cardoso7 Rozana , Vargas da Silva2 Antonio Marcos , de Christo Dorneles8 Camila , Weber Werle8 Roberta , Carvalho Ferreira1 Juliana , Della Méa Plentz2,3 Rodrigo , R F Carvalho4 Celso
Published: June 2022

Objective: To identify factors that lead to a positive oxygenation response and predictive factors of mortality after prone positioning. Methods: This was a retrospective, multicenter, cohort study involving seven hospitals in Brazil. Inclusion criteria were being > 18 years of age with a suspected or confirmed diagnosis of COVID-19, being on invasive mechanical ventilation, having a PaO2/FIO2 ratio < 150 mmHg, and being submitted to prone positioning. After the first prone positioning session, a 20 mmHg improvement in the PaO2/FIO2 ratio was defined as a positive response. Results: The study involved 574 patients, 412 (72%) of whom responded positively to the first prone positioning session. Multiple logistic regression showed that responders had lower Simplified Acute Physiology Score III (SAPS III)/SOFA scores and lower D-dimer levels (p = 0.01; p = 0.04; and p = 0.04, respectively). It was suggested that initial SAPS III and initial PaO2/FIO2 were predictors of oxygenation response. The mortality rate was 69.3%. Increased risk of mortality was associated with age (OR = 1.04 [95 CI: 1.01-1.06]), time to first prone positioning session (OR = 1.18 [95 CI: 1.06-1.31]), number of sessions (OR = 1.31 [95% CI: 1.00-1.72]), proportion of pulmonary impairment (OR = 1.55 [95% CI: 1.02-2.35]), and immunosuppression (OR = 3.83 [95% CI: 1.35-10.86]). Conclusions: Our results show that most patients in our sample had a positive oxygenation response after the first prone positioning session. However, the mortality rate was high, probably due to the health status and the number of comorbidities of the patients, as well as the severity of their disease. Our results also suggest that SAPS III and the initial PaO2/FIO2 predict the oxygenation response; in addition, age, time to first prone positioning, number of sessions, pulmonary impairment, and immunosuppression can predict mortality.
Ideal Factor Analysis of Implementation Management Due to Waste Material of Building Construction Materials on Contractor Projects In Indonesia
Authors: Thoengsal James , Tumpu Miswar
Published: June 2022

The implementation of building construction projects cannot be separated from the problem of wasting costs, which is one of the contributing factors due to the emergence of residual materials during the construction process. The purpose of this study is to identify and analyze the ideal indicators in the application of construction material waste management in an effort to reduce the impact of cost inefficiency due to the of waste material so far, which in this study is viewed from the point of view of the parties involved in the building project. The results obtained from this study are that the ideal factor for implementing the ideal construction material waste management. Where at the planning/design stage, the most priority variable category is the Selection of Low Waste Materials, then at the procurement stage, namely the Estimation and Ordering of Material Volume and at the construction stage, namely the category Management Commitment category variables. The direction of research development is in the form of developing the concept of an ideal building construction material waste management model that can be applied by the construction operator, in this case addressed to the contractor, planning consultant and material supplier in an effort to reduce the impact of inefficiency in material costs during the construction process in Indonesia.