bluuebunny/crossref_metadata_2025 huggingface dataset:
ЖАЛУВАНА ГРАМОТА МІСТАМ ТА МІСЬКІ ПОЛОЖЕННЯ 1870 ТА 1892 РР. У СУЧАСНІЙ ВІТЧИЗНЯНІЙ ІСТОРІОГРАФІЇ
Authors: Бондаренко Олександр
Published: January 2021

У статті проаналізовано стан сучасних досліджень історії становлення та еволюції міських самоврядних інституцій Наддніпрянської України в 1785–1917 рр.
Доведено, що попри відсутність узагальнювальних історіографічних праць, тема створення та розвитку міського громадського управління є найбільш розробленою серед усіх проблем міської історії.
З’ясовано, що історія самоврядування набула міждисциплінарного характеру та тісно пов’язана з регіональними особливостями розвитку українських міст у складі російської монархії.
Унаслідок аналізу тематичного доробку науковців виокремлено три групи досліджень порушеної проблеми. До першої належать праці, у яких розглядаються питання створення та функціонування міських самоврядних органів за Жалуваною грамотою містам 1785 р. і які діяли практично до 1870 р. Другу групу складають дослідження, що присвячені аналізу теорій місцевого громадського управління, зокрема громадської та державної. Третю групу становлять наукові праці, в яких вивчаються різноманітні аспекти формування та еволюції міських органів управління відповідно до Міських положень 1870 та 1892 рр.
Установлено, що досліджуючи механізм становлення та розвитку міського самоврядування та його державного регулювання, науковці звертають увагу на особливості впровадження органів громадського управління, пов’язаних з тривалим збереженням на українських землях традицій магдебурзького права. Водночас дослідники акцентують на тому, що тогочасне самоврядування намагалося долати ідентичні з теперішніми проблеми – корупцію, брак управлінських кадрів, жорсткий контроль державних органів влади за його діяльністю.
У висновках встановлено основні тенденції, окреслено здобутки та коло недостатньо досліджених проблем, визначено основні напрями подальшого вивчення становлення та функціонування міського самоврядування в імперський період.
USAGE OF NEAR-MISS-INCIDENTS TO ASSESS HAZARDS AT THE WORKPLACE OF WORKERS WITH DISABILITIES
Authors:   O. M. Beketov National University of Urban Economy in Kharkiv, Danova Karyna , Malysheva Viktoriia ,   O. M. Beketov National University of Urban Economy in Kharkiv
Published: January 2021

The aim of the work is to study the possibility of usage the near-miss incidents as the indicators reflecting the level of potential hazard at the workplaces of workers, in particular with stable functional changes in the state of health. This approach is of great preventive value, since it allows obtaining the information about the level of hazard even before it is realized in the form of a certain undesirable event, such as an accident or a casualty. Research methods. The information about near-miss incidents and the potential consequences of hazard realization was obtained using a questionnaire of employees with subsequent statistical processing of the results. Results. Based on the results of studies of near-miss incidents at the workplaces of various groups of workers, it was determined that disability and the severity of disabilities affect the frequency and potential severity of these incidents. In comparison with the control group of workers who did not have stable functional changes in their health, in the process of performing production tasks by workers with II disability group, near-miss incidents occurred 36% more often, and with workers of III group – by 22%. Increase of the potential severity of incidents depending on the group of disability is determined. The scientific novelty lies in the development of ways to use near-miss incidents as indicators of the level of hazard at the workplace of workers with disabilities. The practical significance lies in obtaining information about the frequency and possible severity of near-miss incidents at the workplaces of workers using the example of a metalworking workshop at the enterprise in Kharkiv. The introduction of the procedure to collect information about near-miss incidents with subsequent data processing allows forming data for making managerial decisions to improve the OSH management system at the enterprise and develop effective measures to prevent industrial injuries.
INCREASING INTRINSIC SAFETY IN PULSE POWER SUPPLY SYSTEMS OF CONSUMERS IN COMPARISON WITH DC POWER SUPPLY SYSTEMS
Authors:   Civil and Industrial Safety, Kolosjuk Volodymyr ,   Kremenchuk Mykhailo Ostrohradskyi National University, Rieznik Dmytro ,   Civil and Industrial Safety; Kremenchuk Mykhailo Ostrohradskyi National University, Chencheva Olha ,   Civil and Industrial Safety; Kremenchuk Mykhailo Ostrohradskyi National University, Bolibrukh Boris ,   Lviv Polytechnic National University, Khalmuradov Batyr ,   Head of the Department of Civil and Industrial Safety National Aviation University
Published: January 2021

The purpose of the work is to evaluate the magnitude of the arc sparking energy during switching in the wires of a pulsed power supply system when compared with the energy when powered from a direct current source and to determine the flammable currents of the methane-air mixture to improve intrinsic safety. Methodology. The research methodology is based on the fundamental principles of the application of the theory of electrical engineering, the theory of planning a scientific experiment, computer and simulation modelling. The experimental data were obtained in the laboratories of the Kremenchuk Mykhailo Ostrohradskyi National University using certified metrological measuring instruments. The system was modelled using the software packages Matthcad, Microsoft. EXCEL. StatGraphik. Results. Conducted theoretical and experimental studies of the magnitude of arc sparking prove that the energy of sparking with a pulsed current is less than with a constant one and can be used as the basis for reducing the ignition of gas in mines and other explosive industries. Scientific novelty. The useful use of the consumer’s reactive energy has been substantiated if the supply line or the current source is shut off for the duration of the pause and at the same time the consumer is shunted. Practical significance. The obtained results are recommended to be used in power supply systems of consumers that operate in a pulsed mode to increase their energy efficiency and explosion and fire safety of operation.
LABORATORY TESTING OF STEEL FIBER CONCRETE PRISM FOR TENSION IN BENDING
Authors:   Odessa State Academy of Civil Engineering and Architecture, Surianinov M.G. , Neutov S.P. ,   Odessa State Academy of Civil Engineering and Architecture, Korneeva I.B. ,   Odessa State Academy of Civil Engineering and Architecture, Kalchev I.K. ,   Odessa State Academy of Civil Engineering and Architecture
Published: January 2021

Abstract. Laboratory bending tests of concrete and steel-fiber-concrete prisms were carried out. The concrete matrix for all prisms is made of a concrete mixture of the same composition with a coarse aggregate size up to 10 mm and a water-cement ratio that allows correct mixing of the ready mixture with fiber, so that the latter is evenly distributed over the sample volume. Fiber reinforcement is 1% for all three types of fiber, a fiber made of the same steel with an ultimate strength of 1335 MPa, fiber length 50 mm, diameter 1 mm is used. Fibers differ only in shape, which makes it possible to compare test results across series without correction factors. Concrete samples without fiber are considered as control samples. As a result of laboratory tests, data sets were obtained and analyzed, which are presented in the form of diagrams. Different types of steel fiber show different increases in the load at the beginning of cracking and load-bearing capacity. The most profitable from this point of view is the addition of anchor fiber to concrete, the least – wave fiber. However, the presence of any of the considered steel fibers in the mixture significantly increases the load-bearing capacity of the sample. In addition, the type of destruction of such a sample changes from brittle to viscous. We also studied the deformability of samples with different fiber reinforcement and plotted the dependence of the relative longitudinal strain on the load. Before the crack formation begins, there is a direct proportionality between the load and the strain with the appearance of cracks, the slope of the graphs changes sharply. When the load-bearing capacity is lost, steel fiber-reinforced concrete samples are restrained from final destruction. The use of steel fiber in concrete on average increases the crack resistance by 40%, and the load-bearing capacity by 64%. Compared with samples without fiber reinforcement, samples with anchor fiber show an increase in load-bearing capacity by 89%, and crack resistance by 61%. When using flattened fiber, these values are 56% and 32%, and for wave fiber – 47% and 25%, respectively. The use of steel fiber in the manufacture of concrete mix avoids the brittle nature of destruction.
NUMERICAL ANALYSIS OF CIRCULAR PLATES ON AN ELASTIC BASE WITH VARIABLE BED COEFFICIENT
Authors:   Odessa State Academy of Civil Engineering and Architecture, Krutii Yu.S. , Surianinov M.G. ,   Odessa State Academy of Civil Engineering and Architecture, Soroka M.M. ,   Odessa State Academy of Civil Engineering and Architecture, Karnauhova G.S. ,   Odessa State Academy of Civil Engineering and Architecture
Published: January 2021

Abstract. The paper presents the results of a study of the stress-strain state of a circular plate of constant cylindrical stiffness, which lies on a variable elastic foundation and is under the influence of a continuously distributed transverse load. Twelve variants of calculation are considered ‒ six for a steel round plate and six more ‒ for a concrete round plate under two conditions of fixing and three different laws of variation of the bed coefficient. To solve the problem, the finite element method implemented in the LIRA-SAPR software package is used. It is noted that in the case when the bedding coefficient is a variable value depending on the coordinate in which the foundation settlement is determined, the analytical approach leads to the need to solve the corresponding differential equations with variable coefficients. Therefore, calculations of circular and annular plates lying on a variable elastic foundation by means of analytical solutions of differential equations are extremely rare in scientific periodicals and are of a private nature. An effective method for the analytical solution of differential equations with variable coefficients for a number of problems in mechanics was proposed by one of the authors of the article, however, the application of the method to the calculation of a circular plate on an elastic foundation with a variable bed coefficient requires verification, therefore, here we consider the features of the finite element analysis of such a plate under different boundary conditions and different laws of variation of the bed coefficient. In all versions, the results completely coincide with the known results of bending of slabs that do not have an elastic base and in the case when this base exists and its resistance is constant. The discrepancy here is very insignificant ‒ in the third significant digit after the decimal point for deflection when hinged and in the second for moments. In case of rigid clamping, the deflections and moments also differ from the corresponding values of the known solutions in the second significant digit after the decimal point.
OPTIMAL HEIGHT OF STEEL PLATE GIRDERS WITH CORRUGATED WEBS
Authors:   Kyiv National University of Civil Engineering and Architecture, Lavrinenko L.І. , Oleynik D.Y. ,   Kyiv National University of Civil Engineering and Architecture
Published: January 2021

Abstract. This work is carried out in order to study the classical problem of determining the optimal height of a plate girder with given moment of resistance in relation to the features of the real operation of a beam with a corrugated web. A bi-symmetric plate girder with a wavy web is considered. The structural model parameters of the girder correspond to the Zenam technology, which determines the structural limitations of the task. The physical model is the 1st class double-tee girder according to the stress-strain state (in accordance with the current design standards of Ukraine SCS (State Construction Standards of Ukraine) В.2.6-198). The mathematical model is considered as a task of minimizing the objective function (beam mass) taking into account design factors. The height is a project variable. The objective function is formulated as one-parameter taking into account the bending strength of the beam. The structural coefficients and their influence on the objective function are considered. Both the shear strength constrain and overall wall shape stability constrain are taken into account. Deflections are determined taking into account the shear deformations of the thin web. The minimum values of the beam height are considered when the permissible deflection is not exceeded. It is shown that the introduction of the conditions of shear strength and wall stability into the resolving equation indicates the lower limit of the calculated variable value. The constraint is inactive in the area of feasible solutions. Areas of rational decisions are shown. Numerical studies have been conducted for corrugated beam structures. Design requirements in accordance with design standards are used as method constraints. The optimal values of the beam height are obtained according to the minimum mass criterion in the range of applied spans and loads. The effective values of spans and loads for beams with corrugated walls in the range of optimal parameters and technological limitations have been determined. Further research is needed to explore constructive solutions that would minimize the values of constructive coefficients, taking into account specific effects such as local tensions and real-world operating conditions.
Ella, la révélation au féminin à partir d'un accompagnement psychoesthétique dans le cadre d'un second cancer du sein
Authors: Lecointe M. , Dumet N.
Published: January 2021

Cette étude s'appuie sur le parcours d'Ella. Ella est une patiente rencontrée dans un dispositif d'accompagnement psychoesthétique lors de ses soins à l'occasion d'une récidive de cancer du sein. Les auteurs montrent comment l'expérience d'une seconde atteinte cancéreuse a pu favoriser la reprise symboligène d'affects et de représentations mobilisés antérieurement lors de la première traversée cancéreuse, et aboutissant à des remaniements réflexifs dans son être et son psychosoma féminins.
Embedding Ethnocultural Empathy in a Community-Based Health Intervention Writing Assignment
Authors: Ward Maranda
Published: January 2021

This article describes an undergraduate health sciences course where students propose a community-level intervention that addresses a local health disparity. Students use community planning principles and health equity concepts as a final project in their 8-week online community-engaged course. The student-proposed project engages a community in health education or promotion-program planning and allows for faculty assessment of pedagogical decisions. A curricular commitment to health equity enhances the capacity and competency of learners to address the structural inequities that fuel pervasive health disparities among socially disadvantaged populations. Ethnocultural empathy or racial/ethnic perspective taking is used as a measurable competency. The final paper requires students to describe how the perspectives of Black, Indigenous, People of Color (BIPOC) have shaped their proposed community intervention. They are also asked to offer recommendations on how to best mitigate the racial bias that may show up in community-based interventions.
Pengaruh Waktu terhadap Daya Dukung Fondasi Tiang Bersirip pada Tanah Lunak
Authors: Ananda Fikri , Fatnanta Ferry , Ika Putra Agus
Published: January 2021

Abstrak

  Penelitian ini mengkaji tentang pengaruh waktu terhadap peningkatan daya dukung fondasi tiang sirip dan polos. Variasi waktu pengujian dalam penelitian ini adalah 0, 1, 2, 4, 8, 16, 32 dan 64 hari, semua variasi waktu akan di analisis dan membandingkan hasil daya dukung aksial dari fondasi tiang sirip dan polos. Hasil penelitian ini menampilkan hasil perbandingan terbesar antara tiang sirip dan tiang polos yaitu sebesar 538,75%. Pengujian tiang sirip berdasarkan fungsi waktu, daya dukung aksial mengalami penurunan pada waktu pengujian 1, 4, 16 hari. Sedangkan daya untuk tiang polos selalu mengalami peningkatan berdasarkan fungsi waktu. Faktor peningkatan daya dukung (∆10) adalah sebesar 0,054 untuk tiang polos dan 0,014 unuk tiang sirip. Faktor peningkatan hasil penelitian ini lebih kecil dari penelitian sebelumnya, hal ini karena tanah yang digunakan tanah lanau organik. Tanah organik memiliki kadar air yang tinggi dan daya dukung yang rendah terhadap beban.

Kata kunci: Pengaruh Waktu, Daya Dukung, Faktor Peningkatan (∆10).
Ketahanan Beton Semen Portland Composite Cement (PCC) di Lingkungan Gambut Kabupaten Bengkalis
Authors: Adi Putra Wandala , Olivia* Monita , Saputra Edy
Published: January 2021

Penelitian ini membahas tentang ketahanan beton menggunakan semen PCC dengan mutu beton rencana f’cr 15 MPa, f’cr 20 MPa dan f’cr 28 MPa melalui proses perawatan menggunakan air normal selama 28 hari yang selanjutnya direndam di lingkungan air gambut dengan pH berkisar antara 3-3,80 dengan rata-rata pH 3,44 selama 120 hari di Kabupaten Bengkalis. Adapun penelitian ini memiliki tujuan untuk mengkaji kuat tekan dan porositas beton. Beton dengan menggunakan semen PCC, sampai dengan umur perendaman 120 hari di lingkungan gambut untuk beton dengan kuat tekan rencana 15 MPa, 20 MPa dan 28 MPa terjadi peningkatan kuat tekan yang signifikan yakni antara 23.4% s/d 29.8%. Terkait porositas terjadi sedikit peningkatan pada umur perendaman 28 hari di lingkungan gambut yakni berkisar 0.1-1.2%. Selanjutnya seiring bertambahnya umur perendaman, porositas semakin menurun hingga mencapai -15.1% hingga -27.5% pada umur 120 hari perendaman di lingkungan gambut. Hal ini mengindikasikan bahwa beton semakin padat. Kuat tekan mempengaruhi porositas dimana semakin besar kuat tekan maka semakin kecil porositas yang terjadi. Dari tiga jenis mutu beton rencana yang diujicobakan, maka f’cr 28 MPa dengan menggunakan semen PCC sangat disarankan untuk digunakan di lingkungan gambut.
Analisis Kecelakaan Lalulintas pada Area Black Spot Ruas Jalan Lintas Sumatra Duri – Pekanbaru Kabupaten Bengkalis
Authors: Wanto Naswandi , Djauhari Zulfikar , Sandhyavitri Ari
Published: January 2021

Keselamatan jalan merupakan salah satu penelitian bidang transportasi.Kecelakaan lalulintas menimbulkan masalah serius bagi masyarakat berupa biaya medis,biaya ekonomi (kerugian produktivitas),biaya kerusakan properti,serta biaya rasa sakit dan duka cita. Salah satu upaya untuk meningkatkan keselamatan transportasi yaitu dengan penentuan dan penanganan lokasi rawan kecelakaan lalu lintas. Metode yang digunakan untuk mengidentifikasi lokasi rawan kecelakaan yaitu metode pembobotan lokasi rawan kecelakaan untuk mengidentifikasi lokasi rawan kecelakaan dengan menggunakan metode Batas Kontrol Atas (BKA) dan Upper Control Limit (UCL) hasil analisis terdapat dua ruas jalan dengan jumlah angka ekivalen kecelakaan lebih besar dibandingkan nilai BKA dan nilai UCL dan diidentifikasi lokasi rawan kecelakaan lalu lintas adalah jalan lintas sumatera km112 dan km126. Hasil dari penelitian ini menunjukkan ketidak konsistenan desain geometri khususnya desain alinyemen horisontal segmen jalan yang ditinjau. Model yang dihasilkan menunjukkan bahwa tingkat kecelakaan akan turun jika radius tikungan lebih tinggi dari pada rata-rata radius tikungan dari segmen jalan tinjauan.
Perencanaan Traffic Light pada Persimpangan Jalan Garuda Sakti - Jalan Melati - Jalan Binawidya Kota Pekanbaru
Authors: Hutabarat Sahat , Lubis Fadrizal , Saleh Alfian
Published: January 2021

Simpang empat Garuda Sakti Pekanbaru merupakan salah satu titik temu antara lalu lintas Kota Pekanbaru dengan Kabupaten Kampar yang memiliki kepadatan lalu lintas yang sangat tinggi. Saat ini persimpangan tersebut tidak memiliki Alat Pemberi Isyarat Lalu Lintas (APILL), kondisi ini menyebabkan terjadinya titik konflik yang mengakibatkan kemacetan terutama di jam-jam sibuk. Penelitian ini bertujuan untuk mendapatkan fase berapa yang akan dibuat pada persimpangan tersebut. Perencanaan yang digunakan dalam penelitian ini terdiri dari tiga model pengaturan pergerakan yaitu pengaturan pergerakan 2 fase, 3 fase dan 4 fase. Pada perencanaan 2 fase didapat waktu siklus 52 detik dengan derajat kejenuhan rata-rata < 0,85 dan tundaan rata-rata 21 detik/smp, perencanaan 3 fase didapat waktu siklus 1955,3 detik dengan derajat kejenuhan yang tinggi yaitu > 1 dan tundaan rata-rata 694 detik/smp, perencanaan 4 fase didapat waktu siklus 166,3 detik dengan derajat kejenuhan yang tinggi yaitu > 1 dan tundaan rata-rata 623 detik/smp. Dari hasil penelitian, penulis merekomendasikan pengaturan pergerakan yang paling cocok untuk simpang empat Garuda Sakti Pekanbaru adalah model pengaturan pergerakan 2 fase dengan waktu siklus tidak terlalu besar, waktu hijau tidak terlalu lama dan tidak terlalu cepat pada masing-masing fase, sehingga mengurangi kecelakaan yang mungkin terjadi akibat menerobos lampu lalu lintas
Analisis Persepsi Mahasiswa terhadap Jalur Pendestrian Kampus
Authors: Meutia Wita , Osly Prima Jiwa , Tinumbia Nuryani , Arvian Radhitya Rio
Published: January 2021

Banyak mahasiswa berjalan kaki di koridor yang menghubungkan Fakultas Komunikasi dan Fakultas Psikologi dengan Lapangan Bola Fakultas Hukum kampus Universitas Pancasila untuk menuju beberapa gedung di sepanjang koridor tersebut. Pada segmen jalur pendestrian ini terdapat beberapa halangan seperti pohon dan terkadang di beberapa titik jalur pendestrian sering dijadikan tempat berkumpul sekelompok mahasiswa. Penelitian ini bertujuan untuk menganalisis persepsi mahasiswa terhadap kondisi jalur pendestrian di Universitas Pancasila khususnya jalur pendestrian pada koridor ini. Metode analisis yang digunakan dalam makalah ini adalah stastistik deskriptif yang diperoleh dari penyebaran kuesioner. Kuesioner berisikan pertanyaan persepsi yang didasarkan dari indikator Walkability dan karakteristik responden. Berdasarkan hasil survei yang diperoleh adanya persepsi ketidaksetujuan responden tehadap ketersediaan fasilitas penyebrangan dan kemudahan dalam menyebrang, sementara itu terdapat persepsi ketersetujuan responden pada indikator lainnya
Sistem Pembangkit Listrik Tenaga Surya untuk Tanaman Hidroponik
Authors: Setiawan David , Eteruddin Hamzah , Siswati Latifa
Published: January 2021

Maraknya menanam tanaman dengan cara Hidroponik saat ini, banyak digemari karena tidak memerlukan tanah dan lahan yang luas. Dengan menanam dengan cara hidroponik, hasil panen akan lebih cepat namun perlu untuk memperhatikan ketepatan dalam pemberian nutrisi, intensitas cahaya dan suhu sekitar tanaman.  Menanam hidroponik menggunakan metode NFT (Nutrient Film Technique) dibutuhkan aliran air yang tetap terjaga, tujuannya untuk mengalirkan air nutrisi pada akar tanaman. Dalam praktiknya, PLN digunakan untuk menghidupkan pompa air tersebut namun bila suplai energi dari PLN mati akibat gangguan atau kealpaan maka pasokan nutrisi tanaman juga akan ikut terhenti sehingga diperlukan suatu solusi. Dalam penelitian ini, penulis akan membuat desain sistem pembangkit Tenaga Surya (Panel Surya) serta sistem kendali terhadap aliran air yang akan memasok nutrisi ke tanaman hidroponik tersebut.
Computational strategies for implementation of 2D elastic wave modeling in GPU
Authors: Páez Chanagá Anderson , Ramirez Silva Ana Beatriz , Sánchez Galvis Ivan Javier
Published: January 2021

Elastic wave modeling presents a challenge to implement since it is a computationally costly procedure. Nowadays, due to GPU increased power jointly with development in HPC computation, it is possible to execute elastic modeling with better execution times and memory use. This study evaluates the performance of 2 strategies for implementing elastic modeling using different kernel launching layouts, CPML memory allocation strategies, and wavefield storage management. The performance measures show that the algorithm, which includes 2D kernel launching layout, CPML reduced memory strategy, and GPU global memory storage to save wavefield cube peaks up to 88.4% better execution time and uses 13.3 times less memory to obtain the same elastic modeling results. There is also an increasing trend of enhancement in execution times and memory savings when working with models of bigger sizes with this strategy.
Evaluation attempt of own body sensing amongst persons with and without scoliosis
Authors: Szczygieł Elżbieta , Gigoń Agata , Chudyba Izabela Cebula , Joanna Golec , Edward Golec
Published: January 2021

BACKGROUND: Adolescent idiopathic scoliosis (AIS) is a common structural spine deformity affecting 2%–4% of adolescents. Due to the unknown cause of idiopathic scoliosis, its therapy is a long-term and often unsatisfactory process. In the literature, it is often suggested that problems related to the feeling of one’s own body are caused by AIS. OBJECTIVE: The aim of this study was to assess the feeling of one’s own body among children with and without scoliosis on the example of feeling the head position, pelvis shape and balance. METHOD: The research included 62 children: 30 with scoliosis and 25 without diagnosed scoliosis with an age range between 11 to 19 years. The minimum scoliosis value was 7∘ and the maximum was 53∘. The average value was 25∘. During the study, three functional tests were used: Cervical Joint Position Error Test (CJPET), Clinical Test of Sensory Integration on Balance (CTSIB) and Body proportion demonstration test (BPDT). RESULTS: The results of the tests showed statistically significant differences (CJPET p= 3.54*10-14, CTSIB p= 0.0376, BPDT p= 0.0127). However, none of the studies showed a correlation between the results of people with scoliosis and the value of their Cobb angles.
Investigating women’s chest size, trunk muscle co-contraction and back pain during prolonged standing
Authors: Johnston Heather , Wanninayake Susari , Drake Janessa D.M.
Published: January 2021

BACKGROUND: Chest size is a known factor in the development of back pain for women. However, the neuromuscular mechanisms associated with chest size and back pain are poorly understood. OBJECTIVE: The purpose of this study was to investigate chest size and its association with back pain development and muscle activity patterns during prolonged standing. METHODS: Twenty university-aged women were divided into two groups: small chest size (n= 10, ∼A/C cup) and large chest size (n= 10, ∼D/E cup). Participants completed a 2-hr standing protocol, where eight channels of bilateral trunk electromyography were collected. Muscle activity, specifically co-contraction, was compared between chest size groups, pain developers, and time. RESULTS: The large chest size group reported higher amounts of pain at the upper, middle, and low back. Women in the large chest group sustained higher levels of co-contraction for muscles involving the thoracic and lumbar erector spinae compared to those in the small chest size group during prolonged standing. CONCLUSIONS: Thoracolumbar co-contraction determined in this study may be a potential mechanism contributing to increased back pain development for women with large chest sizes during prolonged standing. This pain mechanism could be targeted and addressed in future non-invasive musculoskeletal rehabilitation to improve back pain for women.
Using reactive hyperemia to investigate the effect of cupping sizes of cupping therapy on skin blood flow responses
Authors: He Xiangfeng , Zhang Xueyan , Liao Fuyuan , He Li , Xu Xin , Jan Yih-Kuen
Published: January 2021

BACKGROUND: Various cupping sizes of cupping therapy have been used in managing musculoskeletal conditions; however, the effect of cupping sizes on skin blood flow (SBF) responses is largely unknown. OBJECTIVE: The objective of this study was to compare the effect of three cupping sizes of cupping therapy on SBF responses. METHODS: Laser Doppler flowmetry (LDF) was used to measure SBF on the triceps in 12 healthy participants in this repeated measures study. Three cup sizes (35, 40 and 45 mm in diameter) were blinded to the participants and were tested at -300 mmHg for 5 minutes. Reactive hyperemic response to cupping therapy was expressed as a ratio of baseline SBF. RESULTS: All three sizes of cupping cups resulted in a significant increase in peak SBF (p< 0.001). Peak SBF of the 45 mm cup (9.41 ± 1.32 times) was significantly higher than the 35 mm cup (5.62 ± 1.42 times, p< 0.05). Total SBF of the 45 mm cup ((24.33 ± 8.72) × 103 times) was significantly higher than the 35 mm cup ((8.05 ± 1.63) × 103 times, p< 0.05). Recovery time of the 45 mm cup (287.46 ± 39.54 seconds) was significantly longer than the 35 mm cup (180.12 ± 1.42 seconds, p< 0.05). CONCLUSIONS: Our results show that all three cup sizes can significantly increase SBF. The 45 mm cup is more effective in increasing SBF compared to the 35 mm cup.
Potential application of dynamic contrast enhanced ultrasound in predicting microvascular invasion of hepatocellular carcinoma
Authors: Dong Yi , Qiu Yijie , Yang Daohui , Yu Lingyun , Zuo Dan , Zhang Qi , Tian Xiaofan , Wang Wen-Ping , Jung Ernst Michael
Published: January 2021

OBJECTIVE: To investigate the clinical value of dynamic contrast enhanced ultrasound (D-CEUS) in predicting the microvascular invasion (MVI) of hepatocellular carcinoma (HCC). PATIENTS AND METHODS: In this retrospective study, 16 patients with surgery and histopathologically proved HCC lesions were included. Patients were classified according to the presence of MVI: MVI positive group (n = 6) and MVI negative group (n = 10). Contrast enhanced ultrasound (CEUS) examinations were performed within a week before surgery. Dynamic analysis was performed by VueBox® software (Bracco, Italy). Three regions of interests (ROIs) were set in the center of HCC lesions, at the margin of HCC lesions and in the surrounding liver parenchyma accordingly. Time intensity curves (TICs) were generated and quantitative perfusion parameters including WiR (wash-in rate), WoR (wash-out rate), WiAUC (wash-in area under the curve), WoAUC (wash-out area under the curve) and WiPi (wash-in perfusion index) were obtained and analyzed. RESULTS: All of HCC lesions showed arterial hyperenhancement (100 %) and at the late phase as hypoenhancement (75%) in CEUS. Among all CEUS quantitative parameters, the WiAUC and WoAUC were higher in MVI positive group than in MVI negative group in the center HCC lesions (P < 0.05), WiAUC, WoAUC and WiPI were higher in MVI positive group than in MVI negative group at the margin of HCC lesions. WiR and WoR were significant higher in MVI positive group. CONCLUSIONS: D-CEUS with quantitative perfusion analysis has potential clinical value in predicting the existence of MVI in HCC lesions.
Abnormally high water temperature prediction using LSTM deep learning model
Authors: Choi Hey-Min , Kim Min-Kyu , Yang Hyun
Published: January 2021

Recently, abnormally high water temperature (AHWT) phenomena are occurring more often due to the global warming and its impact. These phenomena have damaged extensively to the maritime economy around the southern coast of Korea and caused an illness by exacerbating the propagation of Vibrio pathogens. To mitigate damages by AHWT phenomena, it is necessary to respond as quickly as possible or predict them in advance. In this study, therefore, we proposed a deep learning-based methodology to predict the occurrences of AHWT phenomena using the long short-term memory (LSTM) model. First, a LSTM model was trained using the satellite-derived water temperature data over the past ten years. Then, the water temperatures after a few days were estimated using the trained LSTM model. In a performance evaluation, when estimating water temperatures after one-day, the model achieved results of 1.865 and 0.412 in terms of mean absolute percentage error (MAPE) and root mean square error (RMSE), respectively. Second, we developed a decision algorithm based on the Markov state transition in order to predict the AHWT occurrence probability. As a result, we obtained 0.88 of F1 score for predicting AHWT phenomena after 1 day in case of the southern coast of Korea.
Research on financing efficiency and influencing factors of equipment manufacturing industry——Regression model based on SFA panel data
Authors: Wang Qian , Wang Jianxu , Li Hua , Li Xiang
Published: January 2021

Equipment manufacturing industry is the core industry of national economy. The development of artificial intelligence technology provides new development opportunities for the transformation and upgrading of equipment manufacturing industry, but in this process, China’s equipment manufacturing enterprises are faced with serious financing constraints and financing efficiency needs to be improved. Based on the panel data of Listed Companies in equipment manufacturing industry from 2009 to 2018, the article constructs a panel data regression model by using stochastic frontier analysis to measure the financing efficiency of equipment manufacturing industry and study its influencing factors. The results show that the average financing efficiency of China’s equipment manufacturing enterprises is in the medium level, while the traditional equipment manufacturing industry is lower; external financing has a positive impact on the financing efficiency of enterprises, and labor input has a negative impact; in the analysis of influencing factors, the Capital structure, R&D investment, Accounts receivable turnover rate, Fixed assets turnover rate have a great impact on the financing efficiency. The research results have a certain reference significance for equipment manufacturing enterprises to improve financing efficiency.
Research on the influence of E-commerce on the adjustment of rural industrial structure under the background of “internet plus” using intuitionistic fuzzy sets
Authors: Jing Wu , Jie Tian
Published: January 2021

China remains one among largest agricultural countries in the world and one of the fastest growing Internet countries in the world. The further thorough and penetration of the Internet into the rural hinterland indicates that the combination of the Internet and the rural areas already has the technical foundation. The transformation of rural economy with Internet as medium is the future direction of rural development. Starting from the current situation of rural Internet development, based on the annotation of “Internet plus”, this paper explores the theoretical and practical application of rural e-commerce development. We utilize Intuitionistic Fuzzy Sets operator for modelling multiple attribute issues related to decision making to estimate influence of e-commerce in industries. This paper puts forward the measure method of industrial transformation and proves that “Internet plus” e-commerce has exerted a great influence on the commercial civilization, industrial structure and economic structure transformation of rural areas. The steady and lasting impact of this continuous release may become a new paradigm of technological economy. It is of great significance to the formation of the “four modernizing” linkage mechanism with information as media and the innovation of the conventional path of rural economic development and the rapid growth of rural economy.
Patch-CNN: Deep learning for logo detection and brand recognition
Authors: Yousaf Waqas , Umar Arif , Shirazi Syed Hamad , Khan Zakir , Razzak Imran , Zaka Mubina
Published: January 2021

Automatic logo detection and recognition is significantly growing due to the increasing requirements of intelligent documents analysis and retrieval. The main problem to logo detection is intra-class variation, which is generated by the variation in image quality and degradation. The problem of misclassification also occurs while having tiny logo in large image with other objects. To address this problem, Patch-CNN is proposed for logo recognition which uses small patches of logos for training to solve the problem of misclassification. The classification is accomplished by dividing the logo images into small patches and threshold is applied to drop no logo area according to ground truth. The architectures of AlexNet and ResNet are also used for logo detection. We propose a segmentation free architecture for the logo detection and recognition. In literature, the concept of region proposal generation is used to solve logo detection, but these techniques suffer in case of tiny logos. Proposed CNN is especially designed for extracting the detailed features from logo patches. So far, the technique has attained accuracy equals to 0.9901 with acceptable training and testing loss on the dataset used in this work.
Dual discriminative auto-encoder network for zero shot image recognition
Authors: Bai Haoyue , Zhang Haofeng , Wang Qiong
Published: January 2021

Zero Shot learning (ZSL) aims to use the information of seen classes to recognize unseen classes, which is achieved by transferring knowledge of the seen classes from the semantic embeddings. Since the domains of the seen and unseen classes do not overlap, most ZSL algorithms often suffer from domain shift problem. In this paper, we propose a Dual Discriminative Auto-encoder Network (DDANet), in which visual features and semantic attributes are self-encoded by using the high dimensional latent space instead of the feature space or the low dimensional semantic space. In the embedded latent space, the features are projected to both preserve their original semantic meanings and have discriminative characteristics, which are realized by applying dual semantic auto-encoder and discriminative feature embedding strategy. Moreover, the cross modal reconstruction is applied to obtain interactive information. Extensive experiments are conducted on four popular datasets and the results demonstrate the superiority of this method.
THE EFFECTIVENESS OF LEARNING DURING A PANDEMIC COVID-19
Authors: Mujib Abdul , Yunita Yuyun
Published: January 2021

The pandemic Covid-19, which requires everyone, including students to do activities at home, it is easier because of technological advances. The most influential technology in education today is the Internet. The internet allows teachers to provide learning materials without having to meet in person. Teachers can upload learning materials for later access by students. Several internet-based applications and sites are also commonly used by teachers and students to hold face-to-face classes via Whatsapp video calls, Google Clasroom, Zoom Meetings and other online media. Apart from teaching and learning activities, internet-based technology can also be used to support student productive activities. Due to this work from home policy, student activities such as organizations, committees, clubs and so on are hampered. However, by utilizing internet-based applications and sites such as Google Meet, Zoom, Skype and so on, learning activities in the form of meetings and group discussions can run more optimally. Working on group assignments can be easier by using Google Doc where multiple students can edit a document together directly.
Evaluating the U.A.E.’s Orographic Cloud Seeding Techniques: A Comprehensive Analysis of Cloud Seeding Microphysics and Particle Microstructures.
Authors: Singh Divraj
Published: January 2021

Although our knowledge of cloud seeding techniques has increased substantially over the past few decades, there remains a lack of overview of its efficacy and procedures across spatial scales. (1) In this paper, we analyze the 219 cloud seeding events conducted by the U.A.E.’s National Center Of Meteorology. (2) These events aimed to improve agriculture and mitigate the negative effects of summer drought. We analyze the microstructures of cloud particles and the microphysics of air volume and sediment interaction to identify which of the U.A.E.’s cloud seeding techniques were most efficient. First, we evaluate the conditions conducive to cloud condensation nuclei (CCN) formation through the collision-coalesce model and nucleation. Second, we consider cloud particle sedimentation, collision rates and aerosol concentrations to explain cloud behavior and cloud stability during seeding. Third, we analyze the surface tension of spherical particles and how they affect CCN grouping and collision success. Lastly, we examine current static, hygroscopic, dynamic and nanotechnology cloud seeding techniques implemented globally and identify which techniques are most suitable for the U.A.E. to adopt. We find that given the natural U.A.E. climate and the safety concerns associated with uncertain nature of emerging cloud seeding technology, it is best to use non-chemical hygroscopic methods to maximize condensation and rainfall in a sustainable way.
The Relationship of Surgeon Handedness and Experience on Operative Duration and Hearing Improvement in Ipsilateral and Contralateral Otologic Surgeries
Authors: Barzaga Gillian
Published: January 2021

ABSTRACT

Objective: To determine the relationship of the surgeon handedness and operative site laterality on operative duration and hearing improvement in otologic surgery, and to further explore whether this relationship may be related to surgeon experience.

Methods:Design: Retrospective CohortSetting: Tertiary Private Teaching HospitalParticipants: Seventy-three (73) patients aged 18 to 65 years old who underwent primary ear surgery under general anesthesia between January 2016 and December 2019 were retrospectively divided into two groups: 39 contralateral and 34 ipsilateral. The operative durations and hearing improvements were compared using independent t-tests, with consideration of surgeon experience in years further stratifying patients.

Results: There was no significant difference in operative duration, t(71) = 1.14, p = .26, between the contralateral (M = 281.95 minutes, SD = 71.82) and ipsilateral (M = 261.15, SD = 79.26) groups. This same pattern was more pronounced among surgeons with 10+ years of experience although there was also no significant difference in operative time, t(33) = 1.31, p = .19 for both ipsilateral and contralateral surgeries There was no statistically significant difference, t(36) = -0.72, p = .47, in overall mean hearing gain among patients in the contralateral (M = +2.22 dB, SD = 10.54) and ipsilateral (M = +5.12 dB, SD = 14.26) groups. Although the difference was also not statistically significant, t(16) = -1.94, p = .07 for contralateral (M = 0.00, SD = 5.43) and ipsilateral (M = +7.95 dB, SD = 11.52) procedures performed by surgeons with experience of 10 years or more, a mean hearing gain of +7 dB in the ipsilateral group compared to 0 dB in the contralateral group was notable.

Conclusion: This study did not prove that regardless of surgeon experience, right-handed surgeons operating on the right ear and left-handed surgeons operating on the left ear have better ear surgery outcomes of operative duration and hearing improvement compared to right- handed surgeons operating on the left ear and left-handed surgeons operating on the right ear. Future studies on larger samples with more complete data may yet demonstrate this effect.
Reconstruction of Large Nasal Alar Squamous Cell Carcinoma Defect Using a Superiorly - Based Nasolabial Flap
Authors: Cordero Jan Caezar
Published: January 2021

The nasal skin is the most common site of malignancy in the face accounting for as much as 25.5 percent by virtue of its location and propensity for direct exposure to ultraviolet radiation from the sun.1-3 Among the various cutaneous malignancies, basal cell carcinoma is the most ommon, but other types of cancer such as squamous cell carcinoma, cutaneous malignant melanoma, and basosquamous carcinoma are also common.4 Following surgical resection of a malignant lesion, the defect calls for a reconstructive option that will restore aesthetics and function. We present a squamous cell carcinoma of the nasal alar skin which underwent excision and reconstruction of the defect using a superiorly - based nasolabial flap.

CASE REPORT

A 66-year-old man consulted at the outpatient clinic due to a nasal alar mass on the right. The mass started one year prior to consult as a pimple-like lesion on the right nasal ala. There was no history of manipulation or trauma to the aforementioned area. He consulted at a local hospital where he was given unrecalled antibiotics that did not cure the lesion. Instead, he noticed that it gradually enlarged, and a deep ulceration developed within the mass. This prompted consult at our outpatient clinic where a 3 x 2 cm ulcerating mass with crusting and necrotic areas was noted on his right nasal ala. (Figure 1) Anterior rhinoscopy showed an intact mucosa in the right nostril with no gross evidence of tumor involvement. There were no enlarged cervical lymph nodes palpated in the neck. A wedge biopsy revealed a well-differentiated squamous cell carcinoma. He claimed that he had no family history of cutaneous malignancy. However, he had a 20 pack-year history of smoking and was a heavy alcoholic beverage drinker. He previously worked as an electrician and denied chronic exposure to sunlight.

He consequently underwent excision of the right nasal alar mass with 5-mm margin. (Figure 2A, B) A histologic evaluation of the margins revealed that the borders and tumor base were negative for malignancy. The alar cartilage was not involved by tumor. Reconstruction of the defect was done using a superiorly - based nasolabial flap on the right. (Figure 3A, B, C) Two weeks postoperatively, the patient came in for follow-up with a healed, aesthetically - pleasing, and well-coaptated wound. (Figure 4) He remains free of any evidence of recurrence after 1 year.
Architectural and constructive decisions of a triangular reinforced concrete arch with a self-stressed steel brace
Authors:   Educational and Scientific Institute of Architecture and Construction, National University ", Semko Oleksandr ,   Yuri Kondratyuk Poltava Polytechnic", Hasenkо Аnton ,   Educational and Scientific Institute of Architecture and Construction, National University "Yuri Kondratyuk Poltava Polytechnic", Fenkо Aleksey ,   Educational and Scientific Institute of Architecture and Construction, National University "Yuri Kondratyuk Poltava Polytechnic", Emmanuel B. Arch. J Godwin ,   C.A.R.E. School of Architecture, No.27, Dariienko Victor ,   Central Ukrainian National Technical University
Published: January 2021

The article describes the influence of overall dimensions, namely the ratio of lifting height to the span of the triangular reinforced concrete arch of the coating, to the change in internal forces in its cross sections. The change of axial force in steel rods and reinforced concrete half-panels and the change of bending moment in reinforced concrete half-panels depending on the angle of inclination of roof are determined. According to the obtained values of the effort, the required diameters of the working reinforcement and its cost are determined.