bluuebunny/crossref_metadata_2025 huggingface dataset:
Simulation and Nonlinearity Optimization of a High-Pressure Sensor
Authors: Li Ting , Shang Haiping , Wang Weibing
Published: August 2020

A pressure sensor in the range of 0–120 MPa with a square diaphragm was designed and fabricated, which was isolated by the oil-filled package. The nonlinearity of the device without circuit compensation is better than 0.4%, and the accuracy is 0.43%. This sensor model was simulated by ANSYS software. Based on this model, we simulated the output voltage and nonlinearity when piezoresistors locations change. The simulation results showed that as the stress of the longitudinal resistor (RL) was increased compared to the transverse resistor (RT), the nonlinear error of the pressure sensor would first decrease to about 0 and then increase. The theoretical calculation and mathematical fitting were given to this phenomenon. Based on this discovery, a method for optimizing the nonlinearity of high-pressure sensors while ensuring the maximum sensitivity was proposed. In the simulation, the output of the optimized model had a significant improvement over the original model, and the nonlinear error significantly decreased from 0.106% to 0.0000713%.
Guessing the Riddle of a Black Hole
Authors: Meierovich Boris E.
Published: August 2020

A static structure of matter, extremely compressed to the state of a Bose–Einstein condensate by its own gravitational field, is considered. Instead of the widely spread restriction detgik<0, I used a weaker condition of regularity: all invariants of gik are finite. This makes it possible to find regular static solutions to Einstein equations for a spherically symmetric distribution of matter with no restriction on total mass. In these regular static solutions, the metric component grr changes its sign twice: grr(r)=0 at r=rg and at r=rh>rg. The signature of the metric tensor is changed to (+,+,−,−) within the spherical layer rg<r<rh. Though the gravitation dominates at extremely high density, I assume that it does not violate the exchange interaction of elementary particles of the Standard Model. The found regular static solution to Einstein equations, having no limitation on mass, pretends to describe the state of a black hole to which the gravitational collapse leads. The features of a collapsed black hole, its internal composition depending on total mass and the relation with surrounding dark matter, are considered. An astrophysical application: The pressure balance at the interface between a black hole and dark matter determines the plateau velocity of a galaxy rotation curve as a function of the black hole mass. The plateau velocity is inversely proportional to the black hole mass. The speed of rotation of a star at the periphery of a galaxy is proportional to the square root of the black hole mass (direct attraction to the center) and inversely proportional to the mass of the same black hole (as the influence of dark matter). For a condensate of massive bosons in the Standard Model, the direct attraction to the black hole and the influence of dark matter are equal if the black hole mass is about M˜ ∼ 4.24×1037 g. In galaxies with black hole masses M≳M⊙=1.989×1033 g (like UMa: NGC 3726 and UMa: NGC 3769 of the Ursa Major cluster), the motion of stars is driven by dark matter. Their rotation curves should have a well-defined plateau. On the contrary, in galaxies with black hole masses M>>M˜ (like in our Milky Way with the black hole mass M=8.6×1039 g), the motion of stars is regulated by the black hole in the center. Dark matter does not play a significant role in our Milky Way Galaxy.
GIS-Modeling of Island Hopping Through the Philippines Demonstrates Trade-Offs Migrant Grey-Faced Buzzards During Oceanic Crossings
Authors: Concepcion Camille , Bildstein Keith L. , Katzner Todd E.
Published: August 2020

Migration can be costly with consequences that can influence population trajectories. These costs and consequences are especially heightened during over-water travels, which can be high-risk events for birds. We created spatial models to evaluate potential migratory responses of “oceanic”, island-hopping grey-faced buzzards that encounter variation in landscape parameters and weather as they move through and out of the Philippine archipelago. We constrained the modeled routes to enter the island chain at Basco and to use one of four potential exit points in the south of the country, either Balabac, Bongao, Balut Island, or Cape San Agustin. We used all possible combinations of our three external parameters (stopover sites, water crossings and wind direction) to model alternative migratory routes for each of the four exit points (n = 20 migratory routes). Modeled grey-faced buzzard routes were between 1,582 and 2,970 km. Routes overlapped over eastern and central Luzon, along a leading line created by the Sierra Madre Mountains. Routes also overlapped and suggested unavoidable over-water crossings between Mindoro and Palawan, Negros and Zamboanga del Norte, and Leyte and Surigao. Our models suggest that the optimal migratory strategy for these birds is to find the shortest route to an exit point with the greatest possible access to stopover habitats and fewest open-water crossings under wind resistance. Understanding how each of these external factors affected the geography and characteristics of the migratory routes helps us to understand the context for different migratory strategies of birds that face dangerous open-water crossings on migration.
A Policy Move towardsSustainable Urban Transport in Pakistan: Measuring the Social, Environmental and Economic Impacts of Lahore BRT System
Authors: Batool Irem , Irshad Muhammad , Abid Muhammad
Published: August 2020

We examine the impacts of a sustainable urban transport initiative, the first Bus Rapid Transit System launched in Lahore, Pakistan in year 2013.Wemeasure the socio-economic and environmental impacts of theBRTusing aquestionnaire-based survey that collected informationon customers’ travel purpose, travel frequency, travel time, mode access, previous travel mode choices (pre-BRT) and travel mode choices at present. Weestimate that,on average,a BRTpassenger savesabout 46 minutes per day on a singletrip. However, the modal shift from personal automobiles to theBRT system is found to be only 4 percent, i.e.,significantlyless than the shift found in otherworldwide BRT systems.Moreover, weestimate the reduction inthenumber of private vehicles on roads, total distance travelled in km and associated travelling costs and,subsequently,the reduction in the carbonemissions. We concludethat the Lahore BRTtransit systemneeds to be expandedto other parts of the city.
A Dimensão Lúdica da Experiência de Infância na Memória de Velhos
Authors: Medeiros Francisco Emílio de , Silva Ana Márcia , Silva Maurício Roberto da
Published: August 2020

Este artigo aborda a brincadeira com referência no mundo adulto a partir da dimensão lúdica da experiência de infância na memória de velhos. A partir de princípios da História Oral, foram entrevistados 19 velhos moradores da Ilha de Santa Catarina (Brasil) e de Açores (Portugal) onde passaram suas infâncias no espaço e tempo entre 1930 e 1950, tendo por referência os registros de brincadeiras e brinquedos contidos na obra do folclorista Franklin Cascaes. No campo investigado, dentre os achados da pesquisa encontra-se uma dimensão lúdica da experiência de infância que diz respeito à recriação ou à transformação do brinquedo, realizada pela criança, na relação que estabelece com o mundo adulto do qual o brinquedo se origina e que lhe impõe determinações contínuas.
Investigando a Ocupação das “Tribos” nos Espaços de Lazer da Orla de Atalaia em Aracaju/SE
Authors: Aragão Paula , Garcia Luciana Carolline Pina , Mezzaroba Cristiano
Published: August 2020

Esta pesquisa integra o Projeto Orla, que estuda os espaços públicos de lazer da Orla de Atalaia, Aracaju/SE, a qual reúne um número diversificado de espaços destinados às práticas corporais de esporte e lazer, fato que atrai pessoas de diferentes gostos e estilos. Considerando a localização e estrutura, buscou-se identificar os interesses dos grupos em relação ao espaço e seus equipamentos. Na pesquisa de caráter qualitativo e de cunho descritivo foram utilizados como instrumentos de coleta, a entrevista semi-estruturada e o diário de campo. Os resultados demonstram que a acessibilidade e a qualidade das estruturas são fatores primordiais de interesse às “tribos”.
Energy Efficient Optimized LEACH and SEP Routing Protocol for WSN
Authors:   M.Tech IV SEM, Department of E and C Engineering at Sri Dharmastalla Manjunatheshwara College of Engineering and Technology, Dharwad, Karnataka, India., Naik R Manjya , Bidkar Dr. G A ,   Professor, Department of E and C Engineering at SDMCET, Dharwad, Karnataka, India.
Published: August 2020

We all know how Wireless Sensor Network (WSN) is making its way in the modern world and how its application is growing effectively. It has been useful technology which helps to transmit and receive the data. In WSN, all information of physical parameter is sensed and processed by the sensor nodes. Along with the growth of technology in WSN, growth of sensor node is also in progress, it means that size of sensor node is getting reduced. Due to this dimension of the battery of the sensor node is also decreases. Hence Power storage of the battery is also reduced which is a demerit in WSN. But in sensor network replacement of battery is not possible. So we can increase the energy efficiency of sensor node by using LEACH protocol. This protocol helps us to increase life span of network. For heterogeneous network, LEACH produces greater unstable region. To the network stable the paper proposes another protocol is Stable Election protocol (SEP). In this paper LEACH and SEP protocol are tested with MATLAB simulation and comparison of both has done.
4D – Distracted Driver Detection Device
Authors:   IB world school, PISD, Plano Texas, USA., Sridhar Miss Ananya
Published: August 2020

This paper describes an inexpensive distracted driver detection device built using a Raspberry PI3, a video camera, and python code. Distracted and drowsy driving are two of the leading causes of automobile accidents in the United States, and this inexpensive standalone can help prevent those deaths. live video feed of the driver’s face is read in and through the facial landmark detector within DLIB, the co-ordinates of the eyes and mouth are extracted in real time. The ratio of the distance between the eyelids in the vertical direction to the horizontal direction defined as Eye Open Ratio is used to evaluate if the eye is open or closed and a similar ratio on the mouth(Mouth Open Ratio) is used to identify if it is open or closed. By looking at the eye and mouth open ratio for several consecutive frames, it is determined with >95% accuracy whether the driver is drowsy, distracted, or yawning. If any of these behaviors are noted, the device will prompt an audible warning to encourage the driver to focus on the road. The prototype was tested under a variety of lighting conditions from dark to bright light and on different subjects with and without glasses. This test data was used to determine the threshold for when the eye or mouth is determines open or closed. Additionally, the prototype’s settings are customizable for a primary driver to further improve the accuracy. The device connects to a smart phone and sends information with the time stamp of the distracted driver incident. This device can be used to prevent distracted or drowsy driving-related deaths, and is an inexpensive attachment that can easily be fitted into a preexisting vehicle.
Design and Fabrication of Raisin dryer using Solar Powered Air Blower
Authors:   Department of Mechanical, Kongu Engineering College, Perundurai, India., Saravanan A , Kishore S ,   Department of Mechanical, Kongu Engineering College, Perundurai, India., Gowtham A ,   Department of Mechanical, Kongu Engineering College, Perundurai, India., Mathan S ,   Department of Mechanical, Kongu Engineering College, Perundurai, India.
Published: August 2020

This project describes the drying of grapes using a solar powered air blower and a heating module (peltier chip) .The preparation and maintenance of grapes has been considered to be a major complex issue for a long time. In order to achieve more product and higher marks and achieve customer satisfaction more attention is given to quality features. Quality factors including color, size, taste were very important as they would differ from the dehydration process. This project is used to reduce drying time by using solar energy. Solar power plants are important in the tropics, which face challenges in accessing electricity, which severely limits the refrigeration usage as storage of agricultural products is limited, and the need to make products competitive overseas. In this project, the solar energy used to dry food is described; it is thought that hot weather conditions are favorable during the summer season. A DC drive for suction fan operation is used to send atmospheric air into the system and the air temperature is increased using a peltier chip placed in the air. DC’s utility system is powered by a battery charged with the help of solar panels and electricity supply. It works well that the design will be able to shorten the final product time rather than the traditional method.
A Machine Learning Access for Person Identification using Dental X-Ray Images
Authors:   Student, Department of Electrical Engineering, MIT World Peace University, Kothrud, Pune, India., Meshram Pratik Shiva , Parate Dhanashree Keshao ,   Student, Department of Electrical Engineering, MIT World Peace University, Kothrud, Pune, India., Jawale Chetan Bhairu ,   Student, Department of Electrical Engineering, MIT World Peace University, Kothrud, Pune, India., Yewate Akshay Vyankat ,   Student, Department of Electrical Engineering, MIT World Peace University, Kothrud, Pune, India., Lokhande Dr. Netra ,   Department of Electrical Engineering, MIT World Peace University, Kothrud, Pune, India.
Published: August 2020

Dental radiographs do a great deal of work on the evidence of criminal classification. Science deontology is used in crimes that deal with the evidence of a person’s separation related to dental exposure. Due to the advances in data design and the need to evaluate more cases by legal professionals, it is important to use a human evidence framework. Dental radiographs can be classified as biometric if there are no alternatives to body biometrics, for example, palm, finger, iris, face, leg print, and so on. The human body seen using dental radiographs is best under certain conditions when there are no biometric alternatives because the teeth and bones are treated like skin tissues and tissues found in the human body.
Exploration of Characteristics of Steel Fiber Reinforced Concrete and Its Influence on Regular Concrete
Authors:   Student, Department of Civil Engineering, Dr. Vishwanath Karad MIT World Peace University, Pune, India., Deepak Dhruv , Minde Pravin ,   Assistant Professor, Department of Civil Engineering, Dr. Vishwanath Karad MIT World Peace University, Kothrud, Pune, India
Published: August 2020

Concrete is the most widely used product in the construction sector mainly because of its properties and its capability to be moulded to any size. Plain concrete has low tensile strength and forms internal micro cracks. It has been proven that with the addition of natural fibers and synthetic fibers in concrete, it helps in the durability and functionality of structure. The steel fibers are added to the concrete in very low volume doses and it has been effective in decreasing the plastic shrinkage in cracking and also acting as a crack arrestor. In this journal, experimental analysis on steel fiber reinforced concrete is done on M30 and M50 mix with 0.5%, 1%, 1.5% and 2% volume fraction of steel fiber content and is compared with samples of 0% steel fiber content and these samples are investigated on their compressive, split tensile and flexural strengths.
Integrated Reporting It‟s Impact on Value Creation
Authors:   Department of Management, Sri Sri University, Cuttack, India., Bal Tulika , Dhal Sunil Kumar ,   Professor, Department of Management, Sri Sri University, Cuttack, India.
Published: August 2020

Corporate reporting provides the comprehensive picture of an organisation’s performance and position to the stakeholders. In the recent years, corporate reporting has seen a major changes and it has evolved from the financial reporting to the integrated reporting (IR). IR is a corporate reporting reform practised recently by many big companies all over the world. In a precise way, IR has combined the financial report and sustainability report, thus making it more integrated and transparent. Integrated report focuses on the six capitals in a broad way and their value creation for the company over the years. This article has examined many recent research articles to find out the research progress in the area of IR. Analysis of data of 12 companies in six sectors has been made to analyse the value creation of these companies in six capitals. It is observed that the score of reporting for human capital, social and relationship capital, and financial capital was better as compared to intellectual capital, manufacturing capital and natural capital.
Simulation of the Effect of Turning Steering Wheel Intensity on the Vehicle Stability
Authors:   Military-Technical Institute of the National Guard of the Republic of Uzbekistan, PhD, Docent, Docent of department armored vehicles and their operations, Tashkent, Uzbekistan., Аkhmedov Doniyor А. , Xashimov Davron I. ,   Tashkent Institute of Design, Construction and Maintenance of Automobile Roads, PhD, Docent, Tashkent, Uzbekistan., Rashidova Munavvar X. ,   Independent researcher, Military-Technical Institute, National Guard of the Republic of Uzbekistan, Tashkent, Uzbekistan., Namozova Dilnoza B. ,   Independent researcher, Military-Technical Institute, National Guard of the Republic of Uzbekistan, Tashkent, Uzbekistan.
Published: August 2020

In this article, a mathematical model has been developed to show the effect of the drivers’ steering wheel turning intensity on the vehicle’s stability. The developed mathematical model was compared with the results of experiment and its adequacy was evaluated. 3 conditional drivers turn the steering wheel of the vehicle at different speeds. When the conditional drivers were analyzed in the “J-turn” maneuver, it was determined that the indicators of 1,2,3 – conditional drivers are close to the standard. The conditional 2-driver recorded an indicator close to the standard. As for the “Single Lane Change” maneuver, the value of the smallest quadratic deviation from the trajectory of conditional 1-driver was recorded, the correlation index was equal to 0.102, respectively, 0.88.
ANALISIS PRODUKTIVITAS PROSES PAINTING DENGAN PENDEKATAN METODE OVERALL EQUIPMENT EFFECTIVENESS (STUDI KASUS PT. SAKAE RIKEN INDONESIA)
Authors: Afif Hakim  , Sri Pramono
Published: August 2020

Pengukuran produktivitas penting dilakukan agar perusahaan dapat mengevaluasi kinerjanya. Salah satu metode pengukuran produktivitas adalah Overall Equipment Effectiveness (OEE). Pengukuran OEE menggunakan 3 rasio yaitu avaibility, performance, quality. Hasil dari perhitungan OEE tahun produksi 2018 sebesar 42,56 %, dilihat dari besarnya OEE tersebut dikategorikan ke dalam kategori 2 (40% - 59%) atau kategori rendah sehingga perlu dilakukan perbaikan sistem karena berpeluang akan menimbulkan kerugian dan daya saing rendah. Penyumbang terbesar rendahnya nilai OEE adalah pada aspek quality, dengan jenis losses yaitu defect losses dengan rasio 44,60%. Usulan perbaikan yang dilakukan adalah dengan menerapkan pendekatan kaizen 5S. Setelah dilakukan perbaikan selama 5 bulan didapatkan hasil perhitungan OEE sebesar 44,10 %. Jika dibandingkan dengan data tahun 2018 dengan nilai OEE 42,56%, maka mengalami kenaikan sebesar 1,54%. Dengan demikian, diharapkan perusahaan dapat terus meningkatkan performa produktivitasnya di masa-masa mendatang.

Productivity measurement is important so that companies can calculate their performance. One method of measuring productivity is the Overall Effectiveness of Equipment (OEE). The measurement of OEE uses 3 ratios, namely availability, performance, quality. The results of the OEE calculation for the 2018 production year were 42.56%, the contribution of OEE was categorized into category 2 (40% - 59%) ) or low category so it is necessary to improve the system because it is likely to cause losses and low competitiveness. The biggest contributor to the value of OEE is in the quality aspect, with the type of loss, namely defect losses with a ratio of 44.60%. After 5 months of improvement, the OEE calculation result was 44.10%, compared to the 2018 data with an OEE value of 42.56%, an increase of 1.54%, so the company is expected to continue to improve its productivity performance. in the future.
Cyberbullying Dan Interaksi Sosial Pada Remaja Kelas XI SMA Di Surabaya
Authors: Orizani Chindy Maria , The Monica Ganadhi
Published: August 2020

Technology, information, and communication are growing rapidly making it easy for teens to communicate through social media even for negative things like cyberbullying. Victims of cyberbullying receiving unpleasant treatment experience difficulties in their psychological development, impacting on the inability of a teenager to interact socially well. The purpose of this study was to determine the relationship of cyberbullying with social interaction in high school class XI teenagers in Surabaya. The study uses a correlation study design and cross sectional approach. The population of the study was 142 high school students in class XI, 105 samples were taken by simple random sampling. The results showed a low incidence of cyberbullying with moderate social interactions of 42 respondents (40%). Spearman Rank Test results obtained no correlation between cyberbullying and social interaction, p value = 0.516 and r = -0.064. Teenagers are expected to understand the impact of cyberbullying and be more responsive to cyberbullying events that occur around them. Parents and schools can provide education on how to use technology wisely

Keywords: cyberbullying, social interaction, adolescent.
Measuring the Effect of Location on House Prices in Italy
Authors: Gaetano Lisi  , Mauro Iacobini
Published: August 2020

The Italian housing market is characterised by both a strong heterogeneity of real estate assets and a reduced number of property sales. These features, indeed, hamper the use of the hedonic price method, namely, the method that is mostly used for assessing the house prices and for estimating the monetary value of housing characteristics. In this paper, therefore, a hedonic model with dummy variables that identify housing submarkets is used to achieve two important results: enabling greater use of multiple regression analysis in the study of the Italian real estate market, and catching, in the simplest possible manner, the effect of location on house price. Indeed, the house's location is, together with the area in square metres, the housing characteristic that most influences the house price.
BIMBINGAN PRAKTIKUM KIMIA UJI INDIKATOR ALAMI DI SMA NEGERI 1 SINGOSARI
Authors: Fitriana Nurin
Published: August 2020

Abstract: Practicum activities in learning Natural Sciences in the school environment is one of the effective methods to achieve learning objectives. Because in learning activities there are many concepts that can be explained if students carry out scientific activities or with laboratory tests. Singosari 1 High School is one of the high schools located on Jl. Ki Hajar Dewantara Singosari, Malang Regency. This community service activity aims to provide practical guidance to students in SMA Negeri 1 Singosari for Chemistry subjects. This is based on the results of interviews with chemistry teachers who showed that many students had difficulty in acid-base material. The method used needs analysis and is measured with quantitative data in the form of a tabulated questionnaire. The results of this service can be measured qualitatively and quantitatively, namely a questionnaire given to students that shows that there is a positive response and most feel very satisfied with the practicum activities undertaken. Students feel they can construct their understanding independently.

 

Keywords: Practicum, acid-base, IPA
FLocation of pathological glands in primary hyperparathyroidism
Authors: Díaz Gómez D , Martín Sánchez A
Published: August 2020

El hiperparatiroidismo primario (HPP) es el tercer trastorno endocrino más frecuente, causado mayoritariamente por el crecimiento de una sola glándula paratiroides (aunque no siempre). La variabilidad en su localización, la inconstancia de un numero fijo, el pequeño tamaño y la posibilidad de que aparezcan enfermas varias de de las glándulas a la vez hace que en ocasiones sea especialmente difícil extirpar todas las patológicas durante la cirugía. El tratamiento definitivo del HPP pasa hoy en día por la eliminación de la/s glándula/s enfermas/s, lo que puede realizarse mediante una exploración bilateral de cuello o por cirugía míni-invasiva enfocada en la glándula anormal. En los últimos años este abordaje ha ganado importancia por su tasa de éxitos con menor morbilidad, facilitado por las técnicas de localización preoperatoria. Realizamos una actualización en el diagnóstico de localización de las glándulas patológicas mediante revisión bibliográfica de los artículos publicados entre 2014 y 2019, ya que existen algunas bien establecidas como la ecografía o la gammagrafía, pero también hay otras más novedosas, de las cuales la Tomografía Axial Computada cervical con contraste multifásico (TAC 4D) destaca por su rendimiento localizador. Revisamos las técnicas de localización actuales de las glándulas enfermas, las más conocidas y las más novedosas, destacando sus ventajas e inconvenientes para facilitarnos su aplicación en los diferentes escenarios. En base a esto proponemos un algoritmo diagnóstico general sujeto a modificaciones particulares según las preferencias del equipo médico y el centro en el que se aplique.
Management of spontaneous rupture of simple hepatic cyst: a rare complication.
Authors: González Sierra B , Manuel Vázquez A , Ramia Ángel JM
Published: August 2020

Los quistes hepáticos simples representan una de las lesiones hepáticas más frecuentes. Por lo general son asintomáticos y se diagnostican de forma incidental en pruebas radiológicas realizadas por otros motivos. Las complicaciones de este tipo de lesiones son poco frecuentes, siendo la hemorragia intraquística y la infección las más frecuentes. Se han descrito, de forma excepcional, casos de rotura espontánea de quiste simple hepático no parasitario. Presentamos tres pacientes con rotura espontánea de quiste hepático simple no parasitario, donde la presencia o no de abdomen agudo condiciona su manejo y la decisión de actitud conservadora versus quirúrgico. No existe un tratamiento estandarizado para el manejo de esta complicación, siendo el manejo conservador una opción viable en pacientes sin datos de peritonitis en la exploración abdominal. En caso contrario, la opción de cirugía urgente se plantea ante la presencia de abdomen agudo.
تأثير تمرينات أسلوب اللعب في سرعة ودقة التصويب من القفز للاعبي كرة السلة للمتقدمين
Authors: Ahmed Mohannad Sabbah , Jarrow Sherzad Mmuhammad
Published: August 2020

هدف البحث الى معرفة تأثير تمرينات أسلوب اللعب في تطوير سرعة ودقة التصويب من القفز المحتسب بنقطتين وثلاث نقاط ومن عدة مناطق مختلفة، وقام الباحثان بتصميم اختبارين جديدين لقياس سرعة ودقة التصويب من القفز (2-3 نقاط) ومن عدة مناطق مختلفة. واستخدم الباحثان المنهج التجريبي لملائمته مع طبيعة المشكلة، وتمثل مجتمع البحث على لاعبي اندية بغداد الخمسة وهم (الأعظمية، الكهرباء، الخطوط، الشرطة، النفط)، المشاركة في الدوري العراقي الممتاز بكرة السلة للموسم الرياضي (2019-2020) والبالغ عددهم (60) لاعبا يمثلون خمسة اندية في بغداد، وبواقع (12) لاعب لكل نادي، وبلغ متوسط العمر (25.20)، وانحراف (±0.918) سنة، وبمتوسط عمر تدريبي (10.30) وانحراف (0.823±) سنة، ومتوسط وزن (88.60) وانحراف(4.857±) كغم، وبطول (186.50) وانحراف (7.337±) سم، وتم اختيار عينة الاختبار بصورة عمدية  وهم لاعبي نادي الأعظمية الرياضي الذي بلغ عددهم (12) لاعباً لاستخراج نتائج الدراسة ومناقشتها، وبعد تطبيق البرنامج على عينة البحث ظهر ان هناك تأثير ايجابي لتمرينات اسلوب اللعب في تطوير سرعة ودقة التصويب من القفز(2-3 نقاط) ولصالح المجموعة التجريبية, كما أن أغلب الفرق لم تؤكد إلى استعمال هذه التمرينات بشكل مركب وبأسلوب مشابه للعب، وهذا الموضوع ولد لدى الباحثان تصور بوجود حاجة إلى دراسة وبحث لإعداد تمرينات منفردة ومركبة بأسلوب مشابه للتحركات التي تحدث خلال المباراة تعمل على زيادة نسبة السرعة والدقة في أداء التصويب من القفز وذلك من خلال إعطائها دوراً أكبر في العملية التدريبية، وقد توصلت نتائج الدراسة الى فاعلية استخدام تمرينات اسلوب اللعب في تطور سرعة ودقة التصويب من القفز (2-3) نقطة.
تأثير تمرينات خاصة لتطوير زمن الاستجابة الحركية وبعض المهارات التحكيمية للحكام الجدد بكرة السلة
Authors: Quhaet Wisana Muhameed , Abulrida Firas Mtasher
Published: August 2020

يعد الحكم من الركائز الاساسية التي تستند عليها لعبة كرة السلة بسبب الدور الكبير الذي يقدمه في ادارته للمباريات واخراجها بالصورة المطلوبة بأقل الاخطاء التحكيمية من خلال تطبيقه للقانون وتفسيراته واتخاذ القرارات الصحيحة خلال المباراة, لذلك نلاحظ الاهتمام الكبير بتطوير لعبة كرة السلة بشكل عام وحكامها بشكل خاص من قبل الاتحادات الدولية والمحلية. وتكمن اهمية البحث في اعداد تمرينات خاصة لتطوير زمن الاستجابة وبعض المهارات التحكيمية لحكام جدد بكرة السلة وتأهيلهم ليكونوا قادرين على ادارة المباريات , واستخدم الباحثان المنهج التجريبي ذو المجموعة التجريبية الواحدة ذات الاختبارين القبلي والبعدي على عينة من طلاب كلية التربية البنية وعلوم الرياضة جامعة بغداد والبالغ عددهم (8) طلاب من المشاركين في الدورة التحكيمية الاساسية التي اقامها اتحاد بغداد بكرة السلة, وتوصل الباحثان الى نتائج معنوية لزمن الاستجابة الحركية والمهارات التحكيمية لأفراد عينة البحث. كما استنتجا ان التمرينات المستخدمة خلال مدة الاعداد كانت ذا فاعلية في تطوير زمن الاستجابة الحركية وان التدريب بأسلوب مشابه لطبيعة المنافسات له تأثير كبير في عملية تطوير المهارات التحكيمية لأفراد عينة البحث.
PERFORMANCE OF HIGH-POWER VACUUM FISH PUMPING UNITS
Authors: Naumov Vladimir , Velikanov Nikolay , Zemlyanov Anton
Published: August 2020

The article describes the features of modeling the stages of pumping a waterfish mixture using a water-ring vacuum pump. The dynamics of pressure changes in reservoir during pump operation for different time intervals is considered. Solutions of the corresponding differential equations are obtained using the numerical method. The calculated characteristics of the process of water-fish mixture pumping into the receiving container are presented.
A ação direta como mecanismo para enfrentamento da Gentrificação: possibilidades e limites
Authors: Maziviero Maria Carolina , Sandler Daniela
Published: August 2020

Consideramos as contribuições dos novos ativismos urbanos para a luta antigentrificação em São Paulo, por meio de uma abordagem dupla. Primeiro, analisamos experiências atuantes em áreas vulneráveis à gentrificação, que demonstram o potencial e as dificuldades de resistir através de práticas artísticas alternativas. A seguir, incluímos o potencial latente de coletivos periféricos, que oferecem exemplos metodológicos de tecnologias sociais inclusivas que podem ser adaptadas para outras partes da cidade. A premissa é que ações autogeridas criam espaços de discussão autônomo, ampliando a agenda de luta pelo direito à cidade pela resistência concreta e simbólica. Defendemos que a politização do território coloca em xeque estratégias mercadológicas de incorporação harmônica de comunidades, impondo um movimento de ajuste nas estratégias de legitimação ultraliberais.
A construção arbitrária do preço do produto imobiliário e a natureza da renda na condominialização da cidade de São Paulo
Authors: Moreira Petrella Guilherme
Published: August 2020

A região da Luz, centro de São Paulo, constitui caso significativo de disputa pela produção do espaço: renovações urbanas e parcerias público-privada (Estado, agentes construtores e financeiros). O preço da construção (valorização e capitalização) estrutura a urbanização e se realiza como um conjunto de pressuposições que pretendem identificar a região da Luz a outras mais valorizadas da cidade. O produto imobiliário decorrente é aquele que responde a uma determinada “vocação”. Movimento da natureza da renda cuja capitalização se manifesta como aumento do preço, deslocando-se da valorização decorrente da exploração imediata da força de trabalho. Resulta uma marcha que estende relações de produção de condomínios fechados para a cidade, conflitos do privado ao público. Uma “condominialização”, que tende à generalização da propriedade privada e da renda. Uma luta de classes socioespacial.
FRagmentation and Evolution of Dense Cores Judged by ALMA (FREJA). I. Overview: Inner ∼1000 au Structures of Prestellar/Protostellar Cores in Taurus
Authors: Tokuda Kazuki , Fujishiro Kakeru , Tachihara Kengo , Takashima Tatsuyuki , Fukui Yasuo , Zahorecz Sarolta , Saigo Kazuya , Matsumoto Tomoaki , Tomida Kengo , Machida Masahiro N. , Inutsuka Shu-ichiro , André Philippe , Kawamura Akiko , Onishi Toshikazu
Published: August 2020

We have performed survey-type observations in 1 mm continuum and molecular lines toward dense cores (32 prestellar + 7 protostellar) with an average density of ≳105 cm−3 in the Taurus molecular clouds using the Atacama Large Millimeter/submillimeter Array–Atacama Compact Array (ALMA-ACA) stand-alone mode with an angular resolution of 6.″5 (∼900 au). The primary purpose of this study is to investigate the innermost part of dense cores with view to understanding the initial condition of star formation. In the protostellar cores, contributions from protostellar disks dominate the observed continuum flux with a range of 35%–90%, except for the very low-luminosity object. For the prestellar cores, we have successfully confirmed continuum emission from dense gas with a density of ≳3 × 105 cm−3 toward approximately one-third of the targets. Thanks to the lower spatial frequency coverage with the ACA 7 m array, the detection rate is significantly higher than that of the previous surveys, which have zero or one continuum-detected sources among a large number of starless samples using the ALMA Main Array. The statistical counting method tells us that the lifetime of prestellar cores until protostar formation therein approaches the freefall time as the density increases. Among the prestellar cores, at least two targets have possible internal substructures, which are detected in continuum emission with the size scale of ∼1000 au if we consider the molecular line (C18O and N2D+) distributions. These results suggest that small-scale fragmentation/coalescence processes occur in a region smaller than 0.1 pc, which may determine the final core mass associated with individual protostar formation before starting the dynamical collapse of the core with a central density of ∼(0.3–1) × 106 cm−3.
Limits on the Spin–Orbit Angle and Atmospheric Escape for the 22 Myr Old Planet AU Mic b*
Authors: Hirano Teruyuki , Krishnamurthy Vigneshwaran , Gaidos Eric , Flewelling Heather , Mann Andrew W. , Narita Norio , Plavchan Peter , Kotani Takayuki , Tamura Motohide , Harakawa Hiroki , Hodapp Klaus , Ishizuka Masato , Jacobson Shane , Konishi Mihoko , Kudo Tomoyuki , Kurokawa Takashi , Kuzuhara Masayuki , Nishikawa Jun , Omiya Masashi , Serizawa Takuma , Ueda Akitoshi , Vievard Sébastien
Published: August 2020

We obtained spectra of the pre-main-sequence star AU Microscopii during a transit of its Neptune-sized planet to investigate its orbit and atmosphere. We used the high-dispersion near-infrared spectrograph InfraRed Doppler (IRD) on the Subaru telescope to detect the Doppler “shadow” from the planet and constrain the projected stellar obliquity. Modeling of the observed planetary Doppler shadow suggests a spin–orbit alignment of the system (

deg), but additional observations are needed to confirm this finding. We use both the IRD data and spectra obtained with NIRSPEC on Keck II to search for absorption in the 1083 nm line of metastable triplet He i by the planet’s atmosphere and place an upper limit for the equivalent width of 3.7 mÅ at 99% confidence. With this limit and a Parker wind model we constrain the escape rate from the atmosphere to

M
⊕ Gyr−1, comparable to the rates predicted by an X-ray and ultraviolet energy-limited escape calculation and hydrodynamic models, but refinement of the planet mass is needed for rigorous tests.
Thermal Variations of Extremely Close-in Exoplanets
Authors: Carter Jennifer L.
Published: August 2020

Modern exoplanet light curves allow for detailed parameter characterization and are now employed to estimate parameters such as reflectivity and temperature to provide information about planet composition and potential habitability. Currently, exoplanet heat maps are in active development, but a simple model of temperature distribution assumes that the exoplanet has only a dayside and nightside temperature, where each side of the exoplanet emits thermal radiation like a blackbody at constant temperature. Presented here is a new method of characterizing the thermal emissions of exoplanets that considers N temperature zones. The zones make up a series of rings axially symmetric about the substellar point and each will be treated as a blackbody of constant temperature. The hottest zone will be centered about the substellar point. Here I will outline the differences between the N-zone and the dayside/nightside models.
Reliability of Shear-Box Tests Upon Soaking Process on the Sand Soil in Al-Najaf City
Authors: Mahmood Mohammed Sh. , Al-Baghdadi Waseem Haleem , Rabee Asaad M. , Almahbobi Suhad Abdulsattar
Published: August 2020

Accurate prediction of the soil shear strength parameters is essential in the reliable geotechnical design of civil engineering structures. This recent paper investigates the effect of the dry testing condition on the shear strength parameters of the sandy soil using the direct shear apparatus and compared with the saturated condition tests in previous researches on the same soil. The dry soil, usually above the water table, is the principal condition of the Al-Najaf city soil in Iraq. Samples are selected from the site of the University of Kufa, which represents the sandy soil of the city. For reliability purposes, the soil is exposed to different pre-soaking durations (one, two, and four weeks) then air-dried for shear tests. The main results revealed that the angle of internal friction (Φ) tested as a dry sample decreases about -6% up to two-weeks soaking then recovered upon four-week soaking about +6%. Compared to the saturated testing, there are increases in F between 6%-17% from saturated tests. Finally, it is recommended to aware in the selection of testing conditions for calculations of the angle of internal friction.
Effect of Bedding Compaction on the Behavior of Buried Plain Concrete Pipes
Authors: Al-Mosawe Mosa J. , Said Abdul Muttalib I. , Dawood Abbas O.
Published: August 2020

Plain Concrete pipes serve as effective underground infrastructure lines especially as sewer lines and culverts. The installation quality has a high effect on the performance of the buried pipe-soil system besides the pipe material strength. In this research, experimental investigation of buried plain concrete pipes installed in gravelly-sand soil and subjected to strip loading platform as surface loading to search the effect of the bedding compaction on the pipe. Granular soil bedding is a traditional material surrounding concrete pipes. An experimental testing program for two precast plain concrete pipes has 300 mm inner diameter was conducted in a laboratory soil box test facility. Loading on a pipes-soil system were applied up to collapse. Circumferential strain in pipes was measured by means of strain gauges in addition to the measurements of displacement developed in the vertical direction by means of a linear variable differential transformer (LVDT’s) and dials gauges. It is concluded that in case of loose bedding, a higher bedding factor of 1.83 is produced in comparison with dense bedding which produces a bedding factor of 1.49, thus yields that the quality of installation is improved with relatively loose bedding under the pipe.
Improvement of the Assessment Method for Fire Resistance of Steel Structures in the Temperature Regime of Fire under Realistic Conditions
Authors: Shnal Taras , Pozdieiev Serhii , Nuianzin Oleksandr , Sidnei Stanislav
Published: August 2020

There was researched the influence of fire temperature regimes, obtained by the proposed mathematical models, on the mechanical characteristics of metal structures. As a result, the identified patterns of the influence of the parameters of the premises with fires are shown as the slit coefficient decreases and the fire load density increases, the actual limit of fire resistance begins to decrease, as well as at values of fire load density less than 600 [MJ/m2], there is an area where the occurrence of a boundary state is not observed and Nomograms for determining the limit of fire resistance for steel structures at standard values of critical temperature were constructed and an appropriate method was developed.
The Amplitude Calculation Massive Foundations of Machines Taking into Account the Damage
Authors: Mykhailovska Olena V. , Zotsenko Mykola L.
Published: August 2020

The known methods of calculation of oscillation amplitudes of massive foundations of machines taking into account damage are analyzed in the article. It is established that the method set out in the building codes allows to determine the amplitudes of the foundation oscillations at any point of the foundation, approximately enough. This technique does not take into account the interaction with the soil of the deepened foundations, but takes into account only the physical and mechanical characteristics under the sole of the foundation. The authors propose a finite element method (FEM) calculation using the Plaxis 7 software package installed on a personal computer and a vibrometer. The result is the oscillation amplitude of the massive foundation. The presence of cracks and damage increases the magnitude of the oscillation amplitudes from the dynamic impact. If you make timely planned repairs to the foundations, the amplitude of the oscillations can be reduced.
Major Issues of Theory and Practice of Fire Resistance of Reinforced Concrete Structures and Buildings
Authors: Fomin Stanislav , Bondarenko Yurii , Butenko Serhii , Koliesnikov Serhii
Published: August 2020

The basic problems of the theory such as principle of assigning classes of fire resistance, reliability issues, alternative approach to calculation methods, mathematical models of concrete and reinforcement deformation diagram, numerical modelling techniques, temperature analysis and calculation of mechanical work of structural system in fire conditions have been considered. It is revealed that the real practical problem is the lack of professional training of civil engineers in Ukraine and abroad.
Calculation of Lateral Soil Pressure at the Hydraulic Construction and its Sustainability on the Stone Bed
Authors: Karpiuk Irina A. , Karpiuk Vasyl M. , Karpiuk F.R.
Published: August 2020

The engineering method of analysis of pressure of a ground on flat walls is offered at presence of combine strip superficial loading in view of seismic influences. It is recommended to determine a situation of an internal slip surface dividing an elastic zone from area of limiting balance, on the basis of the technical theory of the ultimate stress condition. Proceeding from a situation of an internal and external slip plane, size of strip loading on the fill, the pressure of a ground which is taking place in an ultimate condition, on an internal slip surface of is determined on developed by P. Yakovlev to the specified Coulomb's method [1], and on an internal side of a retaining structure on the basis of the Boussinesq decision. In comparison with the earlier developed way it is offered specified according to the Boussinesq theory a method of definition of pressure transmitted by bed on a ground of the basis and, as a consequence more reasonable definition of safety factor of stability of a structure. Thus, curvilinear normal pressure diagram in a ground under a sole of lay is replaced on isosides trapeziform.
Methodology for Calculating the Technical State of a Reinforced-Concrete Fragment in a Building Influenced by High Temperature
Authors: Bashynska Olha , Otrosh Yurii , Holodnov Oleksandr , Tomashevskyi Andrey , Venzhego Galyna
Published: August 2020

The purpose of research was to develop a methodology for testing the fire-resistant quality of a building fragment influenced by a real fire to substantiate the main calculation methodology provisions and determine the residual load-carrying ability. While testing, it was supposed to determine the technical state of reinforced-concrete structures after high-temperature exposure and further intensive extinguishment. High-temperature heating and further fire extinguishing with water leads to the surface layers’ destruction and weakening of concrete. Impact on the structures of the open air leads to destruction and delamination of weakened concrete with further exposing of reinforcement and its corrosion. The approach, implemented in LIRA-SAPR software package, makes possible to take into account the influence of changes in the temperature regime of operation on the stress-strain state of the structure. After determining the temperature fields, it is necessary to reduce the rigidity characteristics of materials and perform a calculation of strength. When using this approach in order to determine the total deformations of the structure, it is necessary to take into account the creep deformation.
Treatment of Determination Method for Strength Characteristics of Reinforcing Steel by Using Thread Cutting Method after Temperature Influence
Authors: Kovalov Andrii , Otrosh Yurii , Rybka Evgeniy , Kovalevska Tatiana , Togobytska Violeta , Rolin Ihor
Published: August 2020

The article describes the results of an experiment that was done to develop a technique of reinforcement strength characteristics determination by using method of “thread cut”, after various temperature effects on it.
Physic-Mechanical Properties of Composites Based on Secondary Polypropylene and Dispersed of Plant Waste
Authors: Danchenko Yuliya , Kariev Artem , Lebedev Vladimir , Barabash Elena , Obizhenko Tatyana
Published: August 2020

The physic-mechanical properties of filled composites based on secondary polypropylene are investigated. As fillers the dispersed wastes of processing of agricultural plants - buckwheat and oat husk, as well as needles flour and wood flour were used. Water absorption, abrasion, impact strength and bending strength of composites were investigated. It has been proven that oat and buckwheat husks can be effectively used in composites based on secondary polypropylene and replace traditional wood fillers. It has been shown that the physic-chemical properties of the filled composites depend on the structure and physicochemical interactions on the phase separation surface, as well as on the surface properties of the filler particles. It is established that for the production of filled composites with improved physic-mechanical characteristics it is necessary to use fillers with small specific surface and concentration of surface functional groups, and the acid-base characteristic of the surface should be closer to neutral. It is shown that these conditions provide for the formation of a uniform structure of the filled composite with less internal stresses.