bluuebunny/crossref_metadata_2025 huggingface dataset:
Supply Chain Analysis of Rice (Oryza sativa. L.) Sub-Sector in Kanchanpur District, Nepal
Authors: Airee Sandeep , Ojha Bishnu Raj , Ojha Ankit , Bhandari Asmita
Published: October 2020

Rice shares about 20% of the agriculture gross domestic product (AGDP) and nearly 50% of the total calorie requirements of Nepalese people. The study was conducted to assess the different supply chain actors involved in the rice subsector in Kanchanpur district during April- August 2020. Pre-tested semi-structured questionnaires were used to collect the information by selecting 110 respondents including 75 rice producers, 10 agro-vet, 5 millers, 5 wholesalers, and 15 retailers. Statistical Package for Social Science (SPSS) and Microsoft Excel was used for data analysis. The findings revealed that there was a dominance of males (62%) over females (38%). The mean allocated area and productivity were 0.99 ha and 4.26 Mt/ha respectively. Cooperatives (33.33%) hold a major possession in the case of seed producers whereas their own seed (40.6%) and agro-vet (35.7%) hold a major source of seed in the case of grain producers for home consumption and marketed surplus. The average B: C ratio of the paddy growers was found to be 1.40 in the study area. The market margin and producer's share was higher in seeds supply chain NRs 29 per kg and 47.2% as compared to the grain supply chain as NRs 27 per kg and 46% respectively. About 77% of the paddy growers preferred to sell their produce to house and the remaining 23% sold to market. This research reflects the production constraints along with the establishment of an effective supply chain to assure the reliability of supply at an economic price.

Int. J. Soc. Sc. Manage. Vol. 7, Issue-4: 224-233
Production Economics and Determinants of Carrot (Daucus carota L.) production in Chitwan, Nepal
Authors: Pandey Nabin , Rijal Swodesh , Adhikari Himal , Bhantana Binod , Adhikhari Madhusudhan
Published: October 2020

Carrot (Daucus carota L.) is an important agricultural commodity in the world. A study was conducted for comparative analysis of demographic, economics assessment, and determinants of carrot production between ward no. 11 and ward no. 15 of the Bharatpur metropolitan of Chitwan district. Altogether 80 carrot growers, 40 from ward no. 11 and 40 from ward no. 15 of Bharatpur metropolitan were randomly selected. Pretested semi-structured questionnaire was used to collect primary information from randomly selected farmers. Carrot growers were interviewed using face to face method in November 2019. Moreover, Two Focus Group Discussion (FGDs) and two Key Informant Interviews (KII) were performed. All the data were entered in Statistical Package for Social Science (SPSS Statistics 20) and Microsoft Excel (Ms-2013) and analysis was done by using Microsoft Excel, SPSS, and Stata. In the majority of respondents, Poultry manure cost (37.16%) occupied the major portion of the cost of production followed by seed cost (30.18%). The average gross margin per kattha for carrot production found NRs. 4726.62 and the Benefit-cost ratio (BCR) was 1.50. The probability of cultivation of carrot on large scale was found to be 31.12% higher for the male gender of household head and 27% higher for the schooling of the household head. Farmers use the Nepa Drim, F1 variety which incurred higher cost in the seed. Splitting (26.25%) was identified as the most critical problem followed by cracking (21.15%) in the cultivation of carrot. It is recommended that the farmers involved in carrot farming in the study sites should be provided with Subsidy on seed, proper solution of physiological disorder problems and proper technical knowledge for optimizing the use of resources would help to increase the profit of carrot production in the Chitwan district of Nepal.

Int. J. Soc. Sc. Manage. Vol. 7, Issue-4: 234-241
The development of students' motor activity in extracurricular forms of physical education classes
Authors: Svitlik V. , Oliyarnik V. , Melnichuk M. , Smirnova L. , Festriga S.
Published: October 2020

The paper is devoted to the development of students' physical activity by means of physical education during their studies in institutions of higher education is considered. The relevance of the study is due to the objective need to increase the effectiveness of physical education at all its levels in accordance with modern social development as a significant factor in optimizing students' motor activity and maintaining their health. The purpose of the work is to identify and determine the directions of increasing the level of physical activity of students in physical education lessons in extracurricular forms of physical education. Research methods: theoretical analysis, systematization, comparison of different views on the problem under study, generalization of scientific and methodological and specialized literature. Determination of the structure of movement activity of students in the mode of the school day, that in the structure of physical activity walking predominates, which accounts for 55-60% of the time in the weekly physical activity it is established. Second place is occupied by classes in sports sections, third place is occupied by physical education in the network of student educational schedule.Organizational support of extracurricular physical education classes aimed at the development of students' motor activity during training has been defined and scientifically substantiated. As a result, these include: the individualization of the means and methods of physical activity, the formation of knowledge in the development of motor activity, ensuring the widespread use of information means, the choice of adequate means and methodical methods of transferring educational information, the implementation of control over the results.
Physical condition of future law enforcement officers at the stage of professional development
Authors: Khudyakova N. Yu.
Published: October 2020

The analysis of normative documents covering the peculiarities of selection of candidates for service in the National Police of Ukraine and assessment of their level of physical fitness is carried out. Requirements for the physical fitness of future law enforcement officers have been established. It was stated that the level of physical fitness of future law enforcement officers is determined during the selection of candidates for service in the police, and further - during the annual final inspection in the system of police training. The main goal is to establish a person's fitness for service in the police and the ability to tolerate physical activity without reducing the ability to work while performing official duties.

It is determined that the study of the physical condition of higher education students will determine the effectiveness of training sessions and their focus on improving health. The purpose of the article: to determine the dynamics of the physical condition of future law enforcement officers at the stage of professional development. The level of physical condition was assessed by indicators of body weight, body length, age, heart rate, pressure and was determined by the formula of the physical condition index. Based on the research, the level and dynamics of indicators of physical condition of applicants for higher education institutions with specific learning conditions were determined. The study involved cadets of the 2016 enrollment (n = 121), who were trained at the National Academy of Internal Affairs (Kyiv, Ukraine).

It was found that the level of physical condition of future law enforcement officers during the training was defined as "above average". There was a significant improvement in the value of the index of physical condition of applicants in the second year (p<0.01) and an insignificant deterioration in the fourth (p˃0.05). The processing of the obtained results showed an increase in the number of people with a level of physical condition "above average" and a decrease with "low". The results of research give grounds to state the effectiveness of physical training in the first, second and third courses and prove the need to improve the educational process by increasing the share of general physical training in the fourth year.

We see prospects for further research in determining the dynamics of the physical condition of employees of practical units of the National Police of Ukraine.
Epidemiology problem of coronavirus COVID - 19 pandemic and their health hazards and sports activities of athletes: solutions
Authors: Tsyganenko O.I. , Pershehuba Ya.V. , Sklyarova N.A.
Published: October 2020

The purpose of the study: the work is to develop epidemiological approaches to reduce the negative effects of coronaviruses and their epidemics on the health and sports activities of athletes. Research methods: theoretical analysis of scientific literature: generalization, synthesis, formalization, abstraction.

Research results and conclusions: based on the analysis of scientific, scientific and methodological literature and other sources of information, approaches to reducing the negative impact of coronaviruses and their epidemics on the health and sports activities of athletes have been developed. Conclusions have been made about the need to take into account the epidemiological situation with infectious coronavirus diseases and the need to evacuate athletes from quarantine zones when necessary.
SINIF ÖĞRETMENLERİNİN FEN BİLİMLERİ DERSİ “MADDENİN ÖZELLİKLERİ” ÜNİTESİNDE DENEY YÖNTEMİNİN KULLANILMASINA YÖNELİK GÖRÜŞLERİ
Authors: ÇİL Serkan , ÇALIŞOĞLU Murat
Published: October 2020

Bu araştırmada ilkokul 4.sınıf Fen Bilimleri dersi “Maddenin Özellikleri” ünitesinde deney yöntemi kullanımına yönelik ilkokul 4.sınıfları okutan yada daha önceki yıllarda okutmuş olan sınıf öğretmenlerinin görüşlerinin alınması amaçlanmıştır. Araştırmada nitel araştırma yöntemlerinden biri olan durum çalışması uygulanmıştır. Çalışmanın verileri toplamak için yarı- yapılandırılmış mülakat tekniği kullanılmıştır. Tekniğe uygun olarak yarı-yapılandırılmış mülakat soruları hazırlanmış uzman görüşlerine sunulmuş ve bir tane sınıf öğretmeni ile pilot uygulama yapılmıştır. Pilot uygulama ve uzman görüşleri sonucu yarı-yapılandırılmış mülakat sorularına son şekli verilmiştir. Araştırmaya Ağrı İl Milli Eğitim Müdürlüğüne bağlı ilkokullarda görev yapan 4. sınıfı okutan ya da daha önceki yıllarda okutmuş olan gönüllü 6 sınıf öğretmeni katılmıştır. Mülakatlar katılımcıların bilgisi dahilinde ses kaydına alınmış ve bilgisayar ortamında yazıya aktarılmıştır. Araştırmanın verilerinin analiz edilmesinde betimsel analiz yöntemi tercih edilmiştir. Araştırmanın sonuçlarına göre sınıf öğretmenlerinin deney yöntemini birçok olumlu yönü olduğu için tercih ettiklerini belirtmişler, deney yönteminin öğrencinin derse olan ilgisini artırdığını, deney yönteminin öğrencinin akademik başarısını olumlu yönde etkilediğini bir katılımcı dışında tüm katılımcılar belirtmişlerdir. Maddenin özellikleri ünitesinde deney yöntemi uygulama yeterliliği açısından iki katılımcı dışındakiler kendilerini yeterli gördüklerini belirtmişlerdir. Deney yöntemini uygulama yeterliliği bakımından üniversitede aldıkları eğitimleri iki katılımcı dışındakiler yeterli bulmaktadır. Maddenin özellikleri ünitesinde deney yöntemini uygulama sürecinde malzeme eksikliği, laboratuvarın olmaması ve sınıfların kalabalık olması sınıf öğretmenlerinin yaşadığı güçlüklerdir.
Assessment of the Psychoemotional Status of Oncology Patients During an Unfavorable Epidemiological Situation
Authors: Sudakov Dmitrii Valerievich , Nazliev Danail Krasimirovich , Belov Evgenii Vladimirovich , Sudakov Oleg Valerievich , Shevtsov Artiom Nikolaevich
Published: October 2020

The article is devoted to the study of the characteristics of oncology patients’ psychoemotional status. This topic is relevant, since the number of detected cases of cancer is growing annually in Russia and around the world, the annual mortality from which in Russia alone is more than 160,000 people per year. It is outlined that the treatment of oncology patients is a complex and long process involving a wide variety of medical specialties. It is emphasized that the therapy for any malignant tumor is discussed and agreed upon by a special council, which usually includes a surgeon, oncologist, radiologist, chemotherapist, immunologist. However, many researchers acknowledge that often patients also need the help of a psychologist as a positive attitude can significantly help in the fight against a formidable disease. The study of psychoemotional aspects of oncology patients has already been carried out earlier. However, in 2020, the world is faced with a new threat – a new coronavirus infection, as a result of which the entire way of providing medical care has changed. The authors pay special attention to the fact that due to quarantine measures, even cancer centers were closed on a periodic basis, leaving, temporarily, patients in need without qualified assistance. It is the fact that determines the purpose of the work – the analysis of various aspects of oncology patients’ psychoemotional status. The objects of the study were 300 oncology patients, men and women, who were divided into 3 groups of 100 people, depending on their age: 18–40, 41–60, 60+. Then there was a further division into subgroups, depending on whether the oncology was newly diagnosed. The authors believe that the study is interesting since it was carried out in 2 stages – before the period of coronavirus infection and with its spread. The levels of situational and personal anxiety in patients were determined, various depressive states were identified, and patients’ main fears were indicated. The authors come to the conclusion that during a period of unfavorable epidemiological situation, the psychoemotional state of the patients worsened: the level of anxiety increased, various depressive states developed, and patients’ fears changed. The data obtained are of certain interest, both for practicing oncologists and psychologists, and for health professionals.
Vértebra transicional toracolombar em um felino: Relato de caso
Authors: Magnabosco Mariana
Published: October 2020

The transitional vertebra is a congenital anomaly characterized by a vertebra that assumes anatomical characteristics of another vertebra in the adjacent region and occurs at the cervicothoracic, thoracolumbar, lumbosacral, and sacrococcygeal junctions. It is the most common congenital anomaly in dogs and cats and is diagnosed by radiography. The present work aims to report a case of thoracolumbar transitional vertebrae in a feline, 11 years old, addressing the radiographic findings. The patient was received in the Laboratório de Diagnóstico por Imagem e Cardiologia (LADIC) of the Universidade Federal de Pelotas Veterinary Teaching Hospital for thoracic radiography to investigate the presence of lung metastasis. Radiographs in orthogonal views of the thorax were obtained and demonstrated the presence of ribs bilaterally inserted in the first lumbar vertebrae (L1), in addition to spondylosis along the thoracic spine. The patient did not have clinical signs compatible with these vertebral changes. The thoracolumbar transitional vertebrae have a large importance in the decision making of clinicians and surgeons when facing thoracic procedures. The radiologist must pay attention to this change and communicate it so that the clinician, surgeon, and the owner can acquire knowledge, thus avoiding possible medical errors that may harm the patient.
Leishmaniose visceral em canino: abordagem diagnóstica e terapêutica convencional associada com a ozonioterapia – Relato de caso
Authors: Borges Fernanda
Published: October 2020

Canine Visceral Leishmaniasis (CVL) is an infectious disease of chronic and zoonotic character, caused by a pleomorphic protozoan of the order Kinetoplastida, the dog, a main domestic reservoir of L. chagasi, both in urban and rural environments. Thus, adequate control and effective treatment for the maintenance of the patient with canine visceral leishmaniasis is important. Thus, the objective of this study was to report the diagnostic and therapeutic approach in a canine patient with CVL, using ozone therapy as a support for conventional treatment. At a veterinary clinic in Santarém city, Pará state, a four-year-old male canine, dachshund, weighing 7 kg, was seen. On the day of the evaluation, the animal presented decreased appetite, apathy, emesis, weight loss, onychogryphosis, alopecia, non-pruritic, and brittle exfoliative dermatitis. The animal was positive in the rapid test (DPP®) for leishmaniasis with a reagent result. As treatment in an asynchronous manner, the application of miltefosine, allopurinol, and domperidone is initially instituted, then five sessions of ozone therapy were administered with an interval of 7 days for each session. As a result, it was observed that the patient showed a clinical and symptomatic improvement, mainly in the cutaneous tissue after the administration of ozone, with satisfactory results being evidenced during the treatment, making it a viable option for the re-stabilization and/or strengthening of the leukocyte system. Furthermore, in this study, ozone therapy improved the patient's clinical and laboratory findings, however, it did not reduce the parasitic burden as demonstrated by the quantitative polymerase chain reaction (PCR).
PELESTARIAN LINGKUNGAN MELALUI PARTISIPASI PETANI DALAM PEMBENTUKAN RUANG PUBLIK DI DESA BULUTELLUE
Authors: Rahman Abdul , Syukur Muhammad , Rifal Rifal
Published: October 2020

Penelitian ini bertujuan untuk menguraikan partisipasi masyarakat dalam melestarikan hutan dengan memanfaatkan ruang publik sebagai arena aktivitas di Desa Bulutellue, Kecamatan Bulupoddo, Kabupaten Sinjai, Provinsi Sulawesi Selatan. Metode yang digunakan dalam penelitian ini adalah dengan pendekatan kualitatif. Pengumpulan data dilakukan dengan cara pengamatan terlibat dan wawancara terhadap tokoh masyarakat, aparat pemerintah desa, dan tokoh adat. Hasil penelitian menunjukkan bahwa upaya untuk melestarikan lingkungan dilakukan secara mandiri oleh masyarakat melalui pembentukan opini melalui diskusi di gardu sebagai ruang publik, pembentukan kelompok kerja yang otonom, dan ritual upacara adat. Upaya tersebut terbukti efektif dalam menjaga kelestarian lingkungan berserta sumber daya di dalamnya, sehingga mereka optimis akan keberlanjutan lingkungan dan dapat diwariskan kepada generasi selanjutnya.
ISOLASI MASYARAKAT TERASING: KAJIAN KEGIATAN PKSMT PADA SUKU ANAK DALAM
Authors: Setiyadi Bradley , Ranati Asih , Atani Moudy Hadillah
Published: October 2020

Masyarakat terasing sebagai bagian dari masyarakat Indonesia, masih mengalami berbagai permasalahan sosial meliputi berbagai segi kehidupan dan penghidupan yang perlu memperoleh pembinaan secara sistematik untuk meningkatkan taraf kehidupannya. Masyarakat terasing adalah sekelompok masyarakat yang memiliki kesamaan ciri fisik, budaya dan mendalami wilayah tertentu yang terpencil sulit dijangkau dan secara geografis terisolasi, sehingga mengalami kesulitan dalam berinteraksi sosial (budaya) dengan masyarakat diluar mereka. PKSMT adalah suatu usaha pemantapan terhadap kelompok masyarakat yang rawan sosial karena keterasingan dan keterbelakangan, dengan tujuan untuk menciptakan kondisi sosial masyarakat yang mantap sehingga mereka mampu berkembang dan berpartisipasi dalam pembangunan. PKSMT merupakan program pembangunan dengan tujuan dapat mengentaskan dan memantapkan kehidupan Suku Anak Dalam agar memiliki kehidupan yang stabil sesuai dengan norma-norma standar yang dianut oleh masyarakat Indonesia seperti memeluk agama resmi yang diakui pemerintah dan hidup di desa serta dapat beradaptasi dengan lingkungan sosial serta hidup sejajar dengan masyarakat lain yang lebih maju dan pada akhirnya menjadi masyarakat mandiri. Tujuan pemerintah mengambil kebijakan tersebut dilandasi anggapan dasar bahwa Suku Anak Dalam telah hilang kontak dengan arus perubahan sosial. Kondisi tersebut mendorong pemerintah untuk melakukan model pembinaan.
PENGEMBANGAN MODEL LAYANAN INFORMASI BERBANTU MEDIA VISUAL UNTUK MENINGKATKAN PEMANTAPAN KARIER PADA SISWA SMA NEGERI DI KABUPATEN KUBU RAYA
Authors: Andriati Novi , Maulana Riki , Hartinah Galuh , Sukmawati Ema
Published: October 2020

Tujuan penelitian ini ialah mengembangkan model layanan informasi berbantu media visual untuk meningkatkan pemantapan karier pada siswa SMA, metode yang digunakan dalam penelitian ini adalah metode Penelitian dan Pengembangan (Research and Development). Hasil penelitian: 1) Gambaran pelaksanaan layanan informasi karier di sekolah tempat penelitian sudah dilaksanakan secara umumnya melewati tahapan pendahuluan, kegiatan dan pengakhiran, namun belum pernah menggunakan media tertentu seperti berbantuan media visual yang merupakan media yang dapat mempermudah penyampaian informasi kepada siswa, 2) Desain model yang dikembangkan adalah layanan informasi karier berbantuan media visual terdiri atas enam komponen, yaitu: (a) rasional, (b) tujuan layanan informasi karier, (c) asumsi, (d) target dan isi layanan informasi (e) komponen penunjang layanan informasi karier, dan (f) Langkah pelaksanaan layanan informasi karier berbantu media visual, 3) Model layanan informasi berbantu media visual dapat digunakan sebagai upaya untuk meningkatkan pemantapan karier siswa.
Successful treatment of non-midline primary malignant germ cell tumors with yolk sac components in neonates: report of 2 cases
Authors: Weil Alexander G. , Mathews Natalie , Farmer Jean-Pierre , St. Martin Christine , Albrecht Steffen , Jabado Nada , Dudley Roy W. R.
Published: October 2020

Here, the authors present 2 cases of nongerminomatous germ cell tumor (NGGCT): a neonate with a mixed malignant germ cell tumor, 5% yolk sac tumor (YST) and 95% immature teratoma components, originating from the right mesial temporal lobe; and a 2-month-old infant with a pure YST originating from the left middle cranial fossa. These tumors with yolk sac components, which are thought to have a poor prognosis, were successfully treated with complete tumor resection alone and subtotal tumor resection with chemotherapy, respectively. Event-free survival exceeds 5 years for each patient even though neither received radiotherapy. The authors highlight the role of radical surgery and the successful treatment of neonatal YST with aggressive resection (and chemotherapy in 1 case) while avoiding radiation therapy. They also report the very rare non-midline location of these neonatal NGGCTs and emphasize the importance of considering YSTs and mixed NGGCTs with YST components in the differential diagnosis of non-midline hemispheric or skull base tumors in newborns.
Is the Goutallier grade of multifidus fat infiltration associated with adjacent-segment degeneration after lumbar spinal fusion?
Authors: Duan Ping-Guo , Mummaneni Praveen V. , Guinn Jeremy M. V. , Rivera Joshua , Berven Sigurd H. , Chou Dean
Published: October 2020

OBJECTIVE

The aim of this study was to investigate whether fat infiltration of the lumbar multifidus (LM) muscle affects revision surgery rates for adjacent-segment degeneration (ASD) after L4–5 transforaminal lumbar interbody fusion (TLIF) for degenerative spondylolisthesis.

METHODS

A total of 178 patients undergoing single-level L4–5 TLIF for spondylolisthesis (2006 to 2016) were retrospectively analyzed. Inclusion criteria were a minimum 2-year follow-up, preoperative MR images and radiographs, and single-level L4–5 TLIF for degenerative spondylolisthesis. Twenty-three patients underwent revision surgery for ASD during the follow-up. Another 23 patients without ASD were matched with the patients with ASD. Demographic data, Roussouly curvature type, and spinopelvic parameter data were collected. The fat infiltration of the LM muscle (L3, L4, and L5) was evaluated on preoperative MRI using the Goutallier classification system.

RESULTS

A total of 46 patients were evaluated. There were no differences in age, sex, BMI, or spinopelvic parameters with regard to patients with and those without ASD (p > 0.05). Fat infiltration of the LM was significantly greater in the patients with ASD than in those without ASD (p = 0.029). Fat infiltration was most significant at L3 in patients with ASD than in patients without ASD (p = 0.017). At L4 and L5, there was an increasing trend of fat infiltration in the patients with ASD than in those without ASD, but the difference was not statistically significant (p = 0.354 for L4 and p = 0.077 for L5).

CONCLUSIONS

Fat infiltration of the LM may be associated with ASD after L4–5 TLIF for spondylolisthesis. Fat infiltration at L3 may also be associated with ASD at L3–4 after L4–5 TLIF.
СОВЕРШЕНСТВОВАНИЕ ДЕФОРМАЦИОННОЙ МОДЕЛИ РАСЧЕТА ИЗГИБАЕМЫХ ВНЕЦЕНТРЕННО РАСТЯНУТЫХ ЖЕЛЕЗОБЕТОННЫХ БАЛОК
Authors: Карпюк В М , Петров Н Н , Целікова А С
Published: October 2020

В данной статье исследовалось трещинообразование изгибаемых внецентренно растянутых железобетонных балок. При помощи эффективной компьютерной программы COMPEX были получены математические модели продольных растягивающих сил, вызывающих появление нормальных трещин. Также был проведен анализ полученных моделей, который показал, что решающие влияние на величину продольной силы, вызывающей появление нормальных трещин, оказывает эксцентриситет ее приложения.
ОСОБЛИВОСТІ ПОБУДОВИ ДІАГРАМИ «МОМЕНТ-КРИВИЗНА» НЕРОЗРІЗНИХ ЗГИНАЛЬНИХ ЕЛЕМЕНТІВ ЗА ДІЇ МАЛОЦИКЛОВИХ ЗНАКОЗМІННИХ НАВАНТАЖЕНЬ
Authors: Масюк Г Х , Ющук О В , Масюк В Г , Федюк М А
Published: October 2020

В даній статті наведено рекомендації побудови діаграми «момент-кривизна» статично-невизначених згинальних елементів за дії малоциклових повторних знакозмінних навантажень. На основі аналізу експериментально-теоретичних досліджень встановлено особливості побудови діаграми «».
ДЕФОРМУВАННЯ ДРІБНОЗЕРНИСТОГО ТА КРУПНОЗЕРНИСТОГО БЕТОНІВ ЗА МАЛОЦИКЛОВИХ НАВАНТАЖЕНЬ СЕРЕДНЬОГО ТА ВИСОКОГО РІВНІВ
Authors: Панчук Ю М
Published: October 2020

Наведені результати досліджень деструктивних характеристик дрібнозернистого та крупнозернистого бетонів за малоциклових навантажень середнього і високого рівнів. Побудовані діаграми об’ємного деформування бетонів, дозволяють простежити за тенденцією деформування матеріалу із зростанням кількості циклів навантаження.
ОКРЕМІ ПИТАННЯ АНАЛІЗУ УШКОДЖЕНЬ БУДІВЕЛЬНИХ ОБ’ЄКТІВ ВЕЛИКОЇ ПЛОЩІ
Authors: Дохойда Марек , Вітковска-Добрев Йоанна
Published: October 2020

У роботі представлений перелік проблем, що супроводжують будівельні об'єкти великої площі, в тому числі й підземні гаражі. Здійснено технічний аналіз окремих проблем, що виникають в таких будівлях під час їх експлуатації. Проектування, а пізніше і будівництво підземних гаражів найчастіше, пов'язане з вирішеням складних інженерних питань. Згідно з ними до найпоширеніших конструкційних недоліків у підземних гаражах віднесні: тріщини нижньої плити, порушення поверхових перекриттів, невластиве кручення бетону, відсутність дилатації або також помилково прийняті ґрунтово-водні умови.The paper concerns complex engineering challenges associated with multi-storey underground car parks. An analysis of selected issues in underground garages during the exploitation was performed. The design and implementation of structures of which function are underground garages is most often associated with serious engineering challenges. For structural reasons frequently occurring faults in garages may include fracture of the bottom slab and intermediate floors resulting from improper design of reinforcement, concrete shrinkage, lack of expansion joints or incorrectly adopted soil-water conditions.
СТРУКТУРА, ПРОЧНОСТЬ И МЕХАНИКА РАЗРУШЕНИЯ ЛЕГКИХ БЕТОНОВ НА ОСНОВЕ КЕРАМЗИТА РЕСПУБЛИКИ БЕЛАРУСЬ
Authors: Семенюк С Д , Москалькова Ю Г , Ржевуцкая В А
Published: October 2020

В статье приведены результаты экспериментальных исследований влияния характеристик заполнителей на прочностные и деформативные свойства легкого бетона, а также аналитический обзор работ разных исследователей по данной теме. Рассмотрены особенности формирования структуры легкого бетона, механики его разрушения, особенности формирования и развития микротрещин, основные принципы описания полной диаграммы деформирования.
МЕТОДИКА ТА РЕЗУЛЬТАТИ ЕКСПЕРИМЕНТАЛЬНИХ ДОСЛІДЖЕНЬ ПРУЖНО-ПЛАСТИЧНИХ ВЛАСТИВОСТЕЙ ДРІБНОЗЕРНИСТОГО БЕТОНУ ЗА МАЛОЦИКЛОВИХ НАВАНТАЖЕНЬ ВИСОКИХ РІВНІВ
Authors: Панчук Ю М
Published: October 2020

Наведені методика і результати експериментальних досліджень пружно-пластичних властивостей призм із дрібнозернистого бетону за мало- циклових навантажень високих рівнів
A Modified Method for Modeling of Heterogeneous Hydrodynamics Processes
Authors: Sandrakov Gennadiy
Published: October 2020

A modified method of numerical modeling for heterogeneous fluid dynamics processes with take of phase transitions will be presented. The method is based on the homogenization on cells and approximation of conservation laws for masses, momentums, and energies in integral and differential forms. The combination of Harlow's particle-in-cell method, Belotserkovskii's large particles method and Bakhvalov's homogenization method is used for computing by the modified method simulation for processes with phase transitions.
On One Approach to Predictive Modeling Based on Monitoring Data
Authors: Stefanyshyn Dmytro Volodymyrovych
Published: October 2020

The paper proposes one approach to predict the behavior of complex dynamic systems based on monitoring data presented as time series. The general idea of the approach is a decomposition of a prediction task of the behavior of a complex dynamic system possessing substantial structural and parametric uncertainty. The prediction task is performed in two stages. The first stage realizes the retrospective situational modeling for individual time periods resulting in a set of situational models in the form of simple regressions. The second stage comprises inductive modeling based on the previous situational modeling results. According to the approach, the prediction by means of such combined situational-inductive modeling is aimed at establishing relevant situational models of regression type being adequate in the future within certain limited time periods. The approach allows using simultaneously both the principle of optimization in modeling and the principle of adaptation to situational changes occurring in dynamic systems.
Law of universal gravitation with finite velocity of gravity and mathematical model of motion of a finite number of material points
Authors: Slyusarchuk Vasyl
Published: October 2020

The law of universal gravitation is intro- duced taking into account the finiteness of the gravi- tational velocity. Based on this law, a mathematical model of the motion of a finite number of material points is constructed, a separate case of which is the classical model of the motion of points, which is de- scribed by a system of ordinary differential equations. The constructed model is a system of nonlinear dif- ferential equations with deviating argument and func- tional equations. It more accurately describes the dy- namics of a finite number of material points than the corresponding classical model. A mathematical model of the motion of two material points is also considered.
A Sensitive and Cost-Effective Chemiluminescence ELISA for Measurement of Amyloid-β 1-42 Peptide in Human Plasma
Authors: Mehta Pankaj D. , Patrick Bruce A. , Miller David L. , Coyle Patricia K. , Wisniewski Thomas
Published: October 2020

Background: Amyloid-β42 (Aβ42) is associated with plaque formation in the brain of patients with Alzheimer’s disease (AD). Studies have suggested the potential utility of plasma Aβ42 levels in the diagnosis, and in longitudinal study of AD pathology. Conventional ELISAs are used to measure Aβ42 levels in plasma but are not sensitive enough to quantitate low levels. Although ultrasensitive assays like single molecule array or immunoprecipitation-mass spectrometry have been developed to quantitate plasma Aβ42 levels, the high cost of instruments and reagents limit their use. Objective: We hypothesized that a sensitive and cost-effective chemiluminescence (CL) immunoassay could be developed to detect low Aβ42 levels in human plasma. Methods: We developed a sandwich ELISA using high affinity rabbit monoclonal antibody specific to Aβ42. The sensitivity of the assay was increased using CL substrate to quantitate low levels of Aβ42 in plasma. We examined the levels in plasma from 13 AD, 25 Down syndrome (DS), and 50 elderly controls. Results: The measurement range of the assay was 0.25 to 500 pg/ml. The limit of detection was 1 pg/ml. All AD, DS, and 45 of 50 control plasma showed measurable Aβ42 levels. Conclusion: This assay detects low levels of Aβ42 in plasma and does not need any expensive equipment or reagents. It offers a preferred alternative to ultrasensitive assays. Since the antibodies, peptide, and substrate are commercially available, the assay is well suited for academic or diagnostic laboratories, and has a potential for the diagnosis of AD or in clinical trials.
Computational Design of Copper Ligands with Controlled Metal Chelating, Pharmacokinetics, and Redox Properties for Alzheimer’s Disease
Authors: Chaparro Diego , Flores-Gaspar Areli , Alí-Torres Jorge
Published: October 2020

Background: Redox active metal cations, such as Cu2 +, have been related to induce amyloid plaques formation and oxidative stress, which are two of the key events in the development of Alzheimer’s disease (AD) and others metal promoted neurodegenerative diseases. In these oxidative events, standard reduction potential (SRP) is an important property especially relevant in the reactive oxygen species formation. Objective: The SRP is not usually considered for the selection of drug candidates in anti-AD treatments. In this work, we present a computational protocol for the selection of multifunctional ligands with suitable metal chelating, pharmacokinetics, and redox properties. Methods: The filtering process is based on quantum chemical calculations and the use of in silico tools. Calculations of SRP were performed by using the M06-2X density functional and the isodesmic approach. Then, a virtual screening technique (VS) was used for similar structure search. Results: Protocol application allowed the assessment of chelating, drug likeness, and redox properties of copper ligands. Those molecules showing the best features were selected as molecular scaffolds for a VS procedure in order to obtain related compounds. After applying this process, we present a list of candidates with suitable properties to prevent the redox reactions mediated by copper(II) ion. Conclusion: The protocol incorporates SRP in the filtering stage and can be effectively used to obtain a set of potential drug candidates for AD treatments.
Rotor head shape optimization in a salient pole synchronous machine
Authors: Mohamodhosen Bilquis , Tounzi Abdelmounaïm , Gillon Frédéric
Published: October 2020

The purpose of this paper is to optimize the topology of the rotor head in a Salient Pole Synchronous Generator to maximize the magnetic flux in the stator yoke and in the air gap. The generator is modelled using FE method, and the ON-OFF method is used to manage the optimization domain. Genetic Algorithm is used to find the optimal solution for the problem. The resulting topology and convergence graphs are also presented, and the results are discussed.
Coupled design approach for an integrated GaN-based wireless power transfer rotating system
Authors: Bastiaens Koen , Krop Dave C.J. , Curti Mitrofan , Jumayev Sultan , Lomonova Elena A.
Published: October 2020

This paper concerns the design of a high-frequency GaN-based rotating transformer confined by conductive materials. The design approach combines the high-order spectral element method for the magnetic modeling, an electronic circuit model, and the finite element method for the thermal modeling. The objective of the design analysis is to minimize the ratio of core inertia to efficiency. Two different transformer topologies are considered, in which the power is either transferred in the axial or radial direction. The resulting designs are compared in terms of efficiency, core inertia, and transferred power. The radial design shows the best performance within the optimization problem.
Core losses of the induction motor operating in a wide frequency range supplied from the inverter
Authors: Dems Maria , Komęza Krzysztof , Majer Krzysztof
Published: October 2020

Reducing motor losses is very important in connection with raising the requirements set by international regulations on reducing electricity consumption. As induction motors are increasingly powered by high-frequency voltage, core losses starting to play a dominant role in motor loss balance. The presented paper shows how to calculate the basic and additional losses in the core of the induction motor, generated by the reluctance and slot harmonics of the magnetic field in the motor and by the higher harmonics produced by the inverter, using analytical and field-circuit methods. The results for motor operation at frequencies of supply voltage 10, 20 and 350 Hz were presented and compared with the results of measurements. The main achievement is the statement that losses in the core of the motor fed from the inverter should be calculated as the sum of losses generated by individual harmonics both in the motor and generated by the inverter.
Modal analysis of magnetic vibration of induction motor used in household appliances
Authors: Witczak Pawel , Kubiak Witold , Szulakowski Jacek
Published: October 2020

The paper deals with analysis of vibrational behavior of induction motor using the combined approach linking the finite elements method (FEM) applied to modelling of magnetic and mechanical phenomena in the motor with its modal description in spectral domain. Results of investigations presented in this paper proved that relatively small rotor axis misalignment against stator leads to visible vibration if forces resulted from this effect have frequency close to rotor bending resonance. Paper contains a rigorous description of all steps in analysis with a special attention paid to details of numerical approach both in FEM and in spectral consideration. Results of theoretical investigations were confirmed by measurements.
ANN-based optimization approach devoted to the sizing of arbitrary rotor pole geometries of permanent magnet motors for electric motorcycle
Authors: Nobahari Amin , Vahedi Abolfazl , Takorabet Noureddine
Published: October 2020

Various design approaches have been studied for performance improvement of permanent magnet motors, especially for electric vehicles application. This paper deals with an effective concept that is based on adopting non-traditional geometries for permanent magnet poles. The study focuses on a general methodology for optimal sizing of the rotor poles’ pre-defined geometrical parameters considering certain objectives. For this purpose, the artificial neural network is employed for creating an accurate and simple model to be used in a multi-objective optimization procedure. An interior crescent-shaped permanent magnet motor for an electric motorcycle is studied as a typical case study to prove the performance of the proposed method. Finite element models are developed to create the required dataset for the modeling stage as well as to verify the results.
Laser measurement system dedicated to the determination of rails deformation of a hybrid electromagnetic launcher
Authors: Domin Jarosław
Published: October 2020

The growing applications area of an electromagnetic launcher lead to numerous researches on new constructions and analyzes of existing and novel solutions of this type of device. The typical solutions with a coil or rail drive (named coil-gun and rail-gun) as well as a new hybrid construction which is a combination of these two types of drives are known. The paper presents the construction and mathematical model of the hybrid electromagnetic launcher (containing coil-gun and rail-gun module) with pneumatic assists, but the main purpose of this paper is to present measurement and simulation results of rails deformation for an electromagnetic launcher with rails (rail-gun module). The computer simulations were made using Inventor Professional software. In the measurement system the laser displacement sensor was used.
Investigation of heat effects in pulse electric field treatment of cellular materials
Authors: Iatcheva Ilona , Saykova Ilonka
Published: October 2020

The paper deals with modeling and analysis of coupled electro-thermal processes during the pulsed electric field treatment of cellular materials for extraction of bioactive compounds. Subject of consideration is evaluation of heat effects: appearance of local thermal spots and high temperature gradients in the treated tissue. The presence of these phenomena is important for the processing: it aids the process of electroporation and thereby is useful for the extraction, but also could cause overheating and deterioration of the product quality. The analysis is provided using the finite element method, applied to the coupled time-dependent electric and transient thermal field problem. The mechanisms of heat transfer are studied by numerical simulations corresponding to the parameters (type and duration of electric pulses) of experimental examination of the processes of extraction of substances from vegetable seeds. Two steps are considered in the modeling: before and after electroporation. The field analysis after electroporation is carried out for correspondingly changed size and properties of the contact area between the cells. The obtained results can be used for adjustment of the process parameters in order to improve the yield of the extracted substances, without risk of overheating and degrading the quality of extracted product.
Analysis of magnetic field distribution in a transverse-flux linear motor with superconducting windings
Authors: Habelok Krzysztof , Lasek Pawel , Stepien Mariusz
Published: October 2020

The influence of permanent magnet excitation on HTS coil in transverse-flux linear motor is analyzed. Numerical analysis using finite-element method is carried for two commonly used magnet arrays - alternating and Halbach. The influence of magnet arrangements on critical current density of HTS winding operating in temperature of liquid nitogen of 77 K is examined. The goal is to find optimal air gap size and magnet span to assure the best performance of the motor where anisotropy of superconductor is taken into account.
Intelligent modulation recognition algorithm for optical communication
Authors: Xiong Shuiping
Published: October 2020

In order to improve the modulation recognition algorithm effect of an optical communication system, an improved modulation recognition algorithm technology based on wavelet transform on the time-varying optical communication system is designed. Firstly, considering the time-varying effect of noise on the communication system, wavelet transform is introduced to pre-process the signal of the optical communication system, extracting the characteristic number of modulation recognition of optical communication system, and a classifier of modulation recognition is established by data mining technology to realize modulation recognition technology of optical communication system. Finally, several typical modulation modes of the optical communication system are tested by simulated experiments. In this paper, several typical modulation modes are identified accurately, and real-time on-line analysis of modulation recognition is realized. In the optical communication system, the recognition accuracy of the modulation pattern is higher than other modulation recognition technologies, which has high practical application value.
Study on the optimization of market competition of potato planting industry to agricultural products economic management based on intelligent system management
Authors: Lin Feiting
Published: October 2020

The potato itself has high nutritional value, strong adaptability, long industrial chain and extremely stable yield. At the same time, due to the rich variety of processed products, the further improvement of China’s social and economic level is greatly strengthened. In February 2016, the Ministry of Agriculture issued guiding opinions on promoting the development of the potato industry, which took potato as the main food product for industrial development. The central government attaches great importance to the rapid development of the potato industry, but at the same time, it also exposes many problems, which affect the production and development of the potato industry to a large extent. In order to change this problem, the relevant staff needs to strengthen the application of intelligent technology, so as to improve the level of potato production and processing and improve the competitive advantage of China’s potato industry. There are many types of research on the potato industry in China, but most of them focus on Cultivation and maintenance skills, and there is almost no research on market competition of agricultural products economic management based on the intelligent system. Based on the current situation of potato production in China, combined with the advantages of an intelligent system, this paper analyzes its competitive advantages and disadvantages from the perspective of economic management, and constructs the industrial competitiveness analysis model with the intelligent system as the core technology, and analyzes and discusses the adverse factors affecting the competitiveness. And from the perspective of international trade, the export competitiveness of China’s potato industry was analyzed. Finally, we collected Ximeng as the sample of this study and verified the core points of improving competitiveness from the research. In this paper, based on the intelligent system management of the potato planting industry on agricultural product economic management of market competition optimization research, to a certain extent, filled the domestic blank, has high research and promotion value.
Materials extrusion-inspired engineering reflection of social pressure-induced environmental impact on academy community well-being
Authors: Perig Alexander V. , Zavdoveev Anatoliy V. , Skyrtach Violetta M. , Kovalov Oleksii D. , Arnout Boshra A. , Uskoković Vuk , Gavrish Pavlo A. , Hanevych Oleh D. , Sharapaniuk Bohdan Yu. , Kostikov Alexander A. , Subotin Oleg V.
Published: October 2020

BACKGROUND: Existing issues with student mental health are the sources of ongoing violation of academic and educational integrity in learning and instructional dynamics in all educational institutions worldwide. OBJECTIVE: This didactical paper addresses the practical case of educational integrity violations induced by student mental illness. It presents a thought-provoking unified viewpoint of the existence of a non-obvious geometric analogy between the irreversible psycho-social process of mental disorder growth and the irreversible pressure forming-induced deformation process of materials extrusion through an angular domain. METHODS: This paper uses the method of geometric analogy between the dynamics of social irreversible processes in human society and technical irreversible processes in materials extrusion. RESULTS: The novel analogy between the loss of elliptical shape of an initial circular material element within pressure-extruded material and the development of student mental inadequacy during intensive university education was firstly studied and analyzed in detail. CONCLUSIONS: The author-proposed original socio-technical cross-disciplinary analogy improves and broadens student understanding of nonlinear dynamics both in the technical processes of macroscopic rotation formation in pressure-formed material and in the bio-social processes of psycho-neurological pathology development within a learner’s mind.
La Promoción Social
Authors: Martínez Cachero Luis Alfonso
Published: October 2020

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La formación de directivos de empresa en la E.S.A.D.E. de Barcelona
Authors: Sobreroca Ferrer Luis A.
Published: October 2020

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Reseñas breves
Authors: Autores Varios
Published: October 2020

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