bluuebunny/crossref_metadata_2025 huggingface dataset:
ON THE INTERACTION OF TWO CRACKS ALONG THE MATERIAL INTERFACE
Authors:   Oles Honchar Dnipro National University, Kostenko M , Sheveleva A ,   Oles Honchar Dnipro National University, Loboda V ,   Oles Honchar Dnipro National University
Published: May 2021

Plane deformation problem of the interaction of two collinear cracks between isotropic heterogeneous half-spaces loaded at infinity by normal and tangential stresses is considered. To find the solution, the representation of stresses and displacements through a function that is analytical in the entire complex plane except of the crack regions is used. With the help of these representations, the problem is reduced to the Riemann-Hilbert problem, for the specified piecewise analytical function with jumps along the segments of cracks. An analytical representation of the solution with unknown coefficients, which is determined from the conditions at infinity and the conditions of unambiguous displacements when traversing the contours of cracks, is written. The implementation of the latter leads to the need of calculatson the integrals from the functions with oscillating root singularities. Based on the obtained solution, analytical expressions are written for stresses at different segments outside the crack and jumps of displacements on the cracks. The behavior of stresses and derivatives of the displacements jumps at different parts of the material interface are established. Complex coefficients of stress intensity and energy release rate near the vertices of the right crack are found. The dependences of these factors on the mechanical characteristics of materials, size and mutual location of cracks, as well as on the intensities of the remote normal and tangential stresses are analyzed. The results are presented in the form of tables and graphs. In particular, an increase of the energy release rate for the crack tip when another crack approaches is shown. Graphs of changes in the jump of displacements for different ratios of modulus of elasticity of the upper and lower materials and different ratios of intensities of external normal and tangential stresses are also shown. It was found, in particular, that with a significant difference in the modulus of elasticity and with a significant shear stress field, the interpenetration of materials occurring because of the oscillating singularity near the crack vertices becomes noticeable.
The predictive value of intraoperative visual evoked potential for visual outcome after extended endoscopic endonasal surgery for adult craniopharyngioma
Authors: Qiao Ning , Yang Xiaocui , Li Chuzhong , Ma Guofo , Kang Jie , Liu Chunhui , Cao Lei , Zhang Yazhuo , Gui Songbai
Published: May 2021

OBJECTIVE

Due to the proximity of craniopharyngioma to the optic apparatus, one of the most common complications after surgery is visual deterioration. Intraoperative visual evoked potential (VEP), as a means of real-time visual function monitoring, has been integrated into transsphenoidal surgery for pituitary adenoma to predict postoperative visual outcome. Compared with pituitary tumor, craniopharyngioma often adheres to optic nerves, with increased risk of postoperative visual impairment. Furthermore, extended endoscopic endonasal surgery (EEES) can provide direct visualization of the surgical plane between the craniopharyngioma and the optic nerves, which contributes to analysis of the mechanism of real-time VEP changes during surgery. Therefore, VEP monitoring applied during EEES for craniopharyngioma may have more clinical value. However, only 9 patients who underwent EEES with VEP monitoring for craniopharyngioma have been sporadically reported to date. In this paper, the authors present the largest series to date analyzing the clinical value of VEP to predict postoperative visual outcome in adult patients with craniopharyngioma.

METHODS

Sixty-five adult patients who underwent EEES with intraoperative VEP monitoring for primary craniopharyngioma were retrospectively reviewed. The association between changes in VEP amplitude and postoperative visual outcome was determined. In addition, other potential prognostic factors with regard to postoperative visual outcomes were included in the analysis.

RESULTS

Gross-total resection was achieved in 59 patients (90.8%). Reproducible and stable VEP was recorded in 128 of 130 eyes (98.5%). During surgery, VEP remained stable in 108 eyes, 10 (9.3%) of which had new visual acuity (VA) and/or visual field (VF) defects after surgery. Transient VEP decrease was recorded in 15 eyes, 4 (26.7%) of which had visual deterioration. Of the 5 eyes with permanent VEP decrease, 3 (60%) experienced postoperative visual impairment. Permanent VEP decrease (OR 19.868, p = 0.007) and tight adhesion (OR 6.104, p = 0.040) were independent adverse factors for postoperative VA deterioration. Tight adhesion (OR 7.150, p = 0.002) and larger tumor volume (OR 1.066, p = 0.001) were significant risk factors for postoperative VF defects.

CONCLUSIONS

Intraoperative VEP monitoring can serve as a real-time warning to guide surgeons to avoid postoperative visual impairment. It effectively predicted VA changes in adult patients with craniopharyngioma after EEES. Tight adhesion and larger tumor volume were also strong predictors of postoperative visual impairment.
Endoscope-assisted far-lateral transcondylar approach for craniocervical junction chordomas: a retrospective case series and cadaveric dissection
Authors: Fava Arianna , Russo Paolo di , Tardivo Valentina , Passeri Thibault , Câmara Breno , Penet Nicolas , Abbritti Rosaria , Giammattei Lorenzo , Mammar Hamid , Bernat Anne Laure , Mandonnet Emmanuel , Froelich Sébastien
Published: May 2021

OBJECTIVE

Craniocervical junction (CCJ) chordomas are a neurosurgical challenge because of their deep localization, lateral extension, bone destruction, and tight relationship with the vertebral artery and lower cranial nerves. In this study, the authors present their surgical experience with the endoscope-assisted far-lateral transcondylar approach (EA-FLTA) for the treatment of CCJ chordomas, highlighting the advantages of this corridor and the integration of the endoscope to reach the anterior aspect and contralateral side of the CCJ and the possibility of performing occipitocervical fusion (OCF) during the same stage of surgery.

METHODS

Nine consecutive cases of CCJ chordomas treated with the EA-FLTA between 2013 and 2020 were retrospectively reviewed. Preoperative characteristics, surgical technique, postoperative results, and clinical outcome were analyzed. A cadaveric dissection was also performed to clarify the anatomical landmarks.

RESULTS

The male/female ratio was 1.25, and the median age was 36 years (range 14–53 years). In 6 patients (66.7%), the lesion showed a bilateral extension, and 7 patients (77.8%) had an intradural extension. The vertebral artery was encased in 5 patients. Gross-total resection was achieved in 5 patients (55.6%), near-total resection in 3 (33.3%), and subtotal resection 1 (11.1%). In 5 cases, the OCF was performed in the same stage after tumor removal. Neither approach-related complications nor complications related to tumor resection occurred. During follow-up (median 18 months, range 5–48 months), 1 patient, who had already undergone treatment and radiotherapy at another institution and had an aggressive tumor (Ki-67 index of 20%), showed tumor recurrence at 12 months.

CONCLUSIONS

The EA-FLTA provides a safe and effective corridor to resect extensive and complex CCJ chordomas, allowing the surgeon to reach the anterior, lateral, and posterior portions of the tumor, and to treat CCJ instability in a single stage.
Entrepreneurship Education’s Influence on Learner’s Entrepreneurship Intention in South African Schools
Authors: Tshehla Steven S. , Chodokufa Kudakwashe , Costa King
Published: May 2021

Youth unemployment remains a South African problem and a global concern. Entrepreneurial activity enables people to identify opportunities and start new business ventures helping in addressing Youth unemployment. This study focuses on assessing the influence of entrepreneurship education on the learners’ intention towards entrepreneurship careers in high schools. A quantitative study was conducted consisting of 240 grade 12 learners with entrepreneurship education from the three townships in the City of Tshwane namely Mamelodi, Atteridgeville and Soshanguve. A structured close-ended questionnaire was used to collect data. Data was analysed using descriptive and inferential statistics using SPSS software. Findings have proven a relationship between theoretical education and experiential learning with learners’ intention towards entrepreneurship, with experiential learning significantly influencing the development of entrepreneurship intention in learners. Hence, to improve effectiveness of entrepreneurship education in high school learners, there should be emphasis on experiential learning. Study further indicated that entrepreneurship as a subject has an influence on the choice of entrepreneurship as a career. It is for this reason that learners should interaction with business people globally in order to gain exposure to people who have succeeded by taking entrepreneurship as a career.
The Effect Of Adversity Quotient On Entrepreneurial Motivation
Authors: Respita Reni
Published: May 2021

Abstract :This study aims to analyze the effect of the Adversity Quotient on students' entrepreneurial motivation at the Faculty of Economics, Padang State University. The total population is 1,209 students. Samples were taken using proportional random sampling technique with a sample of 300 students. In collecting data, a questionnaire was used as a technique for collecting it. Simple regression analysis is a data analysis technique used with the help of the SPSS 16 program. Based on the data analysis, it can be concluded that the adversity quotient has a positive and significant effect in increasing student entrepreneurial motivationAbstrak:Penelitian ini bertujuan untuk menganalisis efekAdversity Quotientterhadap motivasi berwirausaha mahasiswa di fakultas ekonomi Universitas Negeri Padang. Jumlah populasi adalah 1.209 orang mahasiswa. Sampel diambil dengan menggunakan teknik proportional random samplingdengan sampel berjumlah300 orang mahasiswa. Dalam pengumpulan data digunakan angket sebagai teknik pengumulannya. Analisis regresi sederhana merupakan teknik analisis data yang dipakai dengan bantuan program SPSS 16. Berdasarkan analisis data didapatkan kesimpulan bahwa adversity quotient memiliki pengaruh yang positif dan signifikan dalam meningkatkan motivasi berwirausaha mahasiswa.
Veteriner protozoolojide aşı uygulamalarına güncel yaklaşım
Authors: GÖKSU Ahmet , ÇİÇEK Hatice
Published: May 2021

Hayvanlarda görülen protozoer enfeksiyonlar, önemli üretim kayıplarına neden olur ve birçok protozoan parazit türü, zoonotik öneme sahiptir. Protozoer hastalıklarla mücadele etmenin en yaygın yolu, antiprotozoal ilaçların kullanılmasına dayanmaktadır. Bununla birlikte, gıda için yetiştirilen hayvanlarda antiprotozoan ilaç direnci ve ilaç kalıntılarının varlığı dünyanın çeşitli yerlerinde protozoan kontrol programları için ana sorunlardan biri olarak ortaya çıkmıştır. Protozoer enfeksiyonları kontrol etmenin en verimli ve uygun maliyetli yolu, bu tür enfeksiyonları önlemek için hayvanları aşılamaktır. Aşılamanın başlangıç maliyeti yüksek olmasına rağmen, hayvanların aşılanmasından kaynaklanan uzun süreli bağışıklık, bu tür enfeksiyonları kontrol altına almak için daha ucuz ve etkili bir alternatif sunmaktadır. Bu derlemede veteriner protozoolojide aşı uygulamalarının mevcut durumu gözden geçirilmiştir.
Indigenous Knowledge and Practices Related To the Reproductive Mother-Child Health Issues of the Karbis in Karbi Anglong, Assam
Authors: Bhattacharjee Somenath
Published: May 2021

Any culture has its own practices to heal different health disorders and diseases. Any culture has evolved certain system of medicine to treat diseases in its own way. This is well variable across groups. It can be noted that disease and ailment, particularly in the simple societies is not an isolated phenomenon, rather they are interwoven with the environment, particularly the forest ecology. Their traditional healing are based on deep observation of ethno-ecology. The present study has been done on the Karbi tribal group of Karbi Anglong, Assam. The district is rich in biodiversity. Such resources are interwoven to their livelihood. The Karbi people had a strong belief that different malevolent supernatural agencies can create tremendous harm and allied misfortune to the reproductive mother as well as to the new born. The concerned people are very much psychologically dependent on the traditional healers and ethno-gynaecologists for the treatment related to such cases. The concerned healers use several locally available plant resources for such treatment. Meanwhile, particularly in the cases of reproductive mother-child health, a number of floral and faunal resources are also used by them, as a part of their ethnic diet. The present study has the prime objective to reveal the relationship between ethno-ecology and indigenous knowledge of the health care system of the Karbis, particularly related to reproductive mother-child health issues. The study has been primarily conducted through intensive fieldwork. Several anthropological methods are used in this regard to collect primary data.
TRADISI “UANG SIRIAH” DALAM TIMBANG TANDO DI NAGARI LANGSAT KADAP KECAMATAN RAO SELATAN KABUPATEN PASAMAN DITINJAU DARI ‘URF
Authors: Mawiyah Sri , Raus Afrian
Published: May 2021

Studi ini mengkaji tentang Tradisi “Uang Siriah” dalam timbang tando di Nagari Langsat Kadap Kecamatan Rao Selatan Kabupaten Pasaman ditinjau dari ‘urf . Dari permasalahan tersebut muncul pertanyaan bagaimana proses pelaksanaan Uang Siriah dalam timbang tando di Nagari Langsat Kadap Kecamatan Rao Selatan Kabupaten Pasaman dan bagaimana tinjauan ‘Urf terhadap pelaksanaan Uang Siriah. Jenis penelitian yang penulis gunakan adalah jenis penelitian lapangan (field research), untuk mendapatkan data-data dari permasalahan yang diteliti menggunakan metode kualitatif. Hasil penelitian yang penulis temukan bahwa sebelum melaksanakan perkawinan ada aturan adat yang harus dijalankan di Nagari Langsat Kadap Kecamatan Rao Selatan Kabupaten Pasaman yaitu calon laki- laki harus membayar uang siriah kepada niniak mamak pihak perempuan dalam proses timbang tando. Pelaksanaan uang siriah dalam pertunangan pada masyarakat Nagari Langsat Kadap pertama diawali proses monyuruah (menyampaikan kehendak). Kedua, proses timbang tando, setelah acara tukar menukar selesai maka dilanjutkan pemberian uang siriah oleh pihak laki- laki kepada niniak mamak perempuan berjumlah Rp. 600. 000. Sanksi bagi yang melanggar diakibatkan terjadi penundaan perkawinan yang sudah ditetapkan oleh kesepakatan  bersama niniak mamak di Nagari Langsat Kadap. Tinjauan ‘urf terhadap keberadaan uang siriah dalam timbang tando adalah termasuk kepada golongan ‘Urf Shahih, hal ini berdasarkan syarat-syarat ‘Urf dijadikan sebagai sumber hukum Islam yaitu, adat tersebut bernilai maslahat karena berdampak baik kepada pihak keluarga laki-laki dan pihak keluarga perempuan. Dengan adanya uang siriah ini memperlihatkan keseriusan seorang laki-laki menikahi seorang perempuan, memperlihatkan tanggung jawab laki-laki, terjailnnya silaturahmi dengan niniak mamak. Bagi keluarga yang keberatan atau tidak mampu seharusnya ditanggung bersama oleh niniak mamak pihak laki- laki sebagai ta’aun atau tolong menolong, supaya tidak mendapat sanksi dan penundaan perkawinan.
MANJAPUIK SUMANDO YANG BAGANYIE DI NAGARI BATU BALANG KECAMATAN HARAU PERSPEKTIF HUKUM ISLAM
Authors: Oktaviani Mori , Emrizal Emrizal
Published: May 2021

Studi ini mengkaji tentang sebuah adat kebiasaan Manjapuik Sumando yang Baganyie di Nagari Batu Balang, Kecamatan Harau yang ditinjau dari Perspektif Hukum Islam. Permasalahannya adalah fenomena banyaknya kaum sumando (suami) yang meninggalkan rumah istri dan pendamaian dengan penjemputan dari pihak istri. Dari permasalahan tersebut muncul pertanyaan Bagaimana Analisis Tinjauan Hukum Islam terhadap Tradisi Manjapuik Sumando yang Baganyie. Penulisan ini merupakan penulisan lapangan. Data/bahan diperoleh melalui wawancara. Setelah data terkumpul diolah dengan cara deskriptif. Dan dianalisis dengan cara pengolahan data kualitatif yaitu penguraian atau penggambaran secara tertulis tanpa menggunakan angka-angka atau statistik. Penulisan ini menemukan hasil Secara syar’i tradisi Manjapuik Sumando yang Baganyie ini sangat baik, termasuk URF SHOHIH yang harus di pertahankan bahkan seharusnya wajib di lakukan untuk terlaksananya tugas dan kewajiban seorang bapak daam rumah tangga (sebagai sumando) yaitu berkewajiban untuk nafkah lahir (sandang, pangan dan papan) serta nafkah bathin beserta pendidikan dan perlindungan bagi istri dan anaknya.
PENCEMARAN DAERAH ALIRAN SUNGAI (DAS) DI NAGARI SUNGAI DAREH KECAMATAN PULAU PUNJUNG KABUPATEN DHARMASRAYA PERSPEKTIF PERDA PROVINSI SUMATERA BARAT NOMOR 8 TAHUN 2014 DAN FIQH SIYASAH
Authors: Hardina Puja , Suryani Irma
Published: May 2021

Studi ini mengkaji tentang bagaimana sebab terjadinnya pencemaran Daerah Aliran Sungai (DAS) di daerah Dhamasraya dari Perspektif Perda Provinsi Sumatera Barat Nomor 8 Tahun Tentang Pengelolaan Daerah Aliran Sungai dan Perspektif Fiqh Siyasah.  Penelitian ini dilaksanakan di Dinas Lingkungan Hidup Kabupaten Dharmasraya. Sumber data pada penelitian ini adalah Sekretaris Dinas Lingkungan Hidup, Kasi PPKLH, Pengawas Lingkungan Hidup, Pengelola Laboraturium dan wali Nagari Sungai Dareh. Penelitian ini menggunakan jenis penelitian lapangan (field research). Berdasarkan hasil Observasi Awal, Penulis menemukan salah Satu Daerah Aliran Sungai (DAS) yang tercemar. Daerah Aliran Sungai (DAS) yang tercemar tersebut diakibatkan oleh aktifitas masyarakat yang melakukan tindakan tambang ilegal dimulai dari tambang emas menggunakan mercuri (air raksa) serta alat berat, penambangan pasir. Di dalam sungai tersebut terdapat ikan yang dijadikan sebagai sumber makanan oleh masyarakat setempat dan juga dijadikan sebagai penopang utama kehidupan masyarakat. Dan ini sangat bertentangan dengan Perda Provinsi Sumatera Barat Nomor 8 Tahun 2014. Pencemaran Daerah Aliran Sungai (DAS) dari  perspektif Fiqh Siyasah yaitu: pelestarian kembali Pencemaran Daerah Aliran Sungai (DAS) yang dilakukan oleh pemerintah daerah Kabupaten Dharmasraya sesuai dengan syariat Islam, seorang ulil amri (Pemimpin) bertanggungjawab terhadap hak-hak warga negara yang wajib dilindungi, seperti mendekatkan kepada kemaslahatan dan menjauhkan dari kemudhorotan, termasuk dalam menjaga kelestarian lingkungan hidup.
LITERATURE REVIEW : THE APPLICATION OF SOAK FEET WARM WATER THERAPY ON DECREASE BLOOD PREASSURE IN ELDERLY WITH HYPERTENSION
Authors: Sari Laila Tafricha , Yuliastanti Yeni , Yuniarti Heni
Published: May 2021

Background : Hypertension is a silent killer because it is a disease that does not show typical symptoms. Based on reports worldwide, an estimated 17,7 million people die of herat desease and blood vessel disease by 2025, hypertension suffers are estimated to reach 1,6 billion people (WHO, 2013). Management of hypertension is more focused on pharmacological techniques and Non-pharmacological techniques.  Non-pharmacological techniques that can be used are soak feet warm water therapy in people with elderly hypertension.Purpose : To provide a theoretical basis for research on non-pharmacological soak feet warm water therapy in elderly with hipertension sufferers.Methods : This study uses a literature review method, the databases used are Google Scholar, PubMed, and Garba Rujukan Digital with a time limit of the last 5 years. Results : The application of soak feet warm water therapy in elderly with hypertension sufferers has a significant effect on reducing blood preassure.Conclusion : Giving soak feet warm water therapy has an effect on reducing blood preassure in people with elderly with hypertension Keywords : hypertension, elderly, soak feet warm water therapy1Student Departement of Ners Polytechnic Health Ministry of SemarangJl. Perintis Kemerdekaan, Magelang Utara, Kota Magelang, Jawa Tengah, Indonesia2Lecturer Departement of Polytechnic Health Ministry of SemarangJl. Perintis Kemerdekaan, Magelang Utara, Kota Magelang, Jawa Tengah, Indonesia3Public Health Office of Magelang CityJl. Jend. Sarwo Edhie Wibowo No.2, Kota Magelang, Jawa Tengah, Indonesia
The New Approach for Risk Regulation in Banks
Authors: Feschiyan Daniela , Andasarova Radka
Published: May 2021

The purpose of this report is to present the necessity of proceeding to new reforms in bank regulation and to increase the stability and risk sensitivity of the capital base under applying the Standardised Credit Risk Assessment Approach (SCRA) in banks. The dynamics in the bank regulation and supervision of credit risk assessment approaches are explored. In the paper, a thorough theoretical-methodological and historical-logical analysis was made of the evolution of the development and chronology of the global regulatory frameworks for banks - Basel 1, Basel 2 and Basel 3. The contemporary projections and challenges for the banks' management under the new regulatory and institutional changes are presented. The SCRA is a positive asset in bank capital regulation in contemporary banking. The revisions to the regulatory framework – Basel 3 by is a long continuous process influenced by numerous economic, social and political factors. The preparation of the Bulgarian banking system for a new reform of financial regulation is analyzed. The need for adoption of a new risk-based approach for capital assessment and the importance of transparency in bank financial reporting is proved.
The Influence of Earnings Quality for Restatements and Auditor’s Qualified Opinion
Authors: Antonio Siqueira Adriano , Caio Galdi Fernando
Published: May 2021

The objective of the present study was to raise the cases of restatements and to evaluate whether these events were associated with the low earnings quality and with the provision of advice with a qualified opinion by audit firms. The results obtained with the analysis indicate that the low earnings quality increases the chances of republishing the financial statements. Additionally, the results indicate that there is no evidence that lower earnings quality increases the chances of issuing a qualified audit report or disapproval of the financial statements by the independent auditors. These results point to a divergence regarding the understanding of earnings quality by the auditors and by the regulatory agency.
Correlation alignment with attention mechanism for unsupervised domain adaptation
Authors: Chen Rong , Ren Chongguang
Published: May 2021

Domain adaptation aims to solve the problems of lacking labels. Most existing works of domain adaptation mainly focus on aligning the feature distributions between the source and target domain. However, in the field of Natural Language Processing, some of the words in different domains convey different sentiment. Thus not all features of the source domain should be transferred, and it would cause negative transfer when aligning the untransferable features. To address this issue, we propose a Correlation Alignment with Attention mechanism for unsupervised Domain Adaptation (CAADA) model. In the model, an attention mechanism is introduced into the transfer process for domain adaptation, which can capture the positively transferable features in source and target domain. Moreover, the CORrelation ALignment (CORAL) loss is utilized to minimize the domain discrepancy by aligning the second-order statistics of the positively transferable features extracted by the attention mechanism. Extensive experiments on the Amazon review dataset demonstrate the effectiveness of CAADA method.
Experimental researches of a two-level air-jet protection of an open surface of industrial baths of the big sizes
Authors: Korbut V. , Rybachov S.G.
Published: May 2021

The developed two-level air-jet screen of an industrial bath is experimentally investigated. The principle of its operation is the supply of air by a shielding jet at the upper level and the suction of polluted air at the lower level symmetrically from opposite sides. At this stage of experimental research, the velocity fields and the nature of the interaction of inflow jets and suction flares have been studied. When determining the geometric dimensions of the air-jet screen structure, the location of key components and system elements, it is important to know, ensure and not exceed the allowable values of air flow velocity above the surface of the liquid mirror. During the observations of the aerodynamic properties of two-level air-jet screens, questions arose about the need to use flat rotational flows and control the velocity field in their interaction. Minimization of the interaction of inflow jets and flares of suction is the basis of the concept of designing a sсreen of this type. The shielding conditions have been experimentally confirmed due to the stabilization of the velocity field above the bath surface. The corresponding dependencies of change of formation of the protective air screen from the basic parameters as that a ratio of velocity "inflow-removal" and geometrical characteristics of a design are defined. For the developed air-jet screen of galvanic baths experimentally determined conditions of effective shielding are as follows: the ratio of the width of the slot for ejection of air from the working area to the width of the gas-tight wall is 0.75, and the ratio of screening jet velocity to air removal rate is within 0.3-2.45. This achieves a capture efficiency of up to 90 %. The expediency of arranging an ejection slot under the air supply slot to increase the flow rate and range of the jet has been confirmed.
Trends in facade system overhaul based on the data analysis of procurement contracts via the PROZORRO public e-procurement system
Authors: A. Radkevich  , K. Netesa  , T. Tkach
Published: May 2021

Obviously, it goes without saying that sustainable economic development and an increase in the cost of energy carriers require improvements in the energy efficiency of existing buildings and structures. For this reason, intelligent energy monitoring and searching for new methods aimed at improving the performance of buildings have been of utmost importance. One of the feasible solutions to improving the performance of existing buildings would arguably be the reduction in energy costs by increasing the insulating properties of their facade systems. This paper analyses the current trends in the overhaul of facade systems in Ukraine. The research results into facade system renovation conducted via the ProZorro public e-procurement system demonstrated that a significant number of repair works were the improvements in the thermal insulation properties of facade systems by means of mineral wool panels and plaster cladding. The percentage of this type of overhaul contracts reached 67% of the total number of investigated contracts. Facade insulation renovation using expanded polystyrene plates approximately made up 20%. The restoration works of an outer layer of façade systems, including plaster restoration, spot-priming, restoration of hard putty, plaster facing and painting works, revetment, etc., which do not impact the energy efficiency of a building, made up about 13% of the total number of contracts. The area of façade works in question averaged from 200 m2 to 1500 m2. Having compared the prices per one square metre of a façade system, the average cost for such works has been calculated in the range of 1500 UAH to 2000 UAH; while the cost of advanced works ranged from 3500 UAH to 4000 UAH. Given a short maintenance-free service life of 7-10 years of the corresponding systems and guided by cost-effectiveness reasons, it has been suggested replacing these facade systems with ventilated facade systems with thermal insulation and ceramic cladding. This façade system has proved to have a significantly longer durability and maintenance-free service life, while the initial investment costs will further increase the energy efficiency properties of a building. As the result, this will enable keeping energy operating costs to minimum, which will consequently increase the building’s cost-effectiveness and its compliance with current global trends in energy conservation.
Research of technical and economic indicators of reinforcement of reinforced concrete beams by different technologies
Authors: О. Molodid  , I. Maksymiuk  , A. Hryhorova
Published: May 2021

The article presents the results of experimental investigations to determine the destructive force of beams reinforced with external reinforcement and control (without reinforcement). According to the results of such investigations, it can be stated that the strengthening of beam structures by external reinforcement made it possible to increase their bearing capacity by 383.3%. It has been established that both carbon fiber reinforcement using "clamps" and carbon fiber reinforcement are effective.The performed analytical researches established technical and economic indicators of various methods of reinforcement of beam constructions, namely: the addition of additional supports, the addition of additional beams, the external reinforcement of stretched zones by MAPEI technology. As a result, data were obtained indicating that the reinforcement of the crossbar by bringing additional rigid support requires 110.4 man-hours (100%), the reinforcement of the crossbar by bringing additional beams - 94.4 man-hours (85.5%), the reinforcement of the crossbar by external reinforcement - 48 man-hours (43.5%). In this case, the reinforcement of the crossbar by bringing additional rigid support is performed in 9.7 days (100%), the reinforcement of the crossbar by bringing additional beams - 6 days (62%), the reinforcement of the crossbar by external reinforcement - 4 days (41.4%). It is also established that the reinforcement of the crossbar by bringing additional rigid support costs 51.8 thousand UAH (100%), strengthening the structure by bringing additional beams - 58.1 thousand UAH (112%), strengthening the structure by external reinforcement - 35.72 thousand UAH (68.9%).The obtained research results indicate that the labor intensity, duration and cost of reinforcing the beam with external reinforcement is lower compared to other technologies. Efficiency is achieved by a structural component - increasing the bearing capacity without changing the design solution and by technological component - reducing the labor intensity, duration and cost of work.
Determination of technological parameters of soil compacting process
Authors: Basarab V. A.
Published: May 2021

The article is devoted to determine the technological parameters of soil compaction by rollers according to soil properties in construction. The compaction of the soil occurs due to certain force loads on the soil. Nowadays, there are enough methods to determine the technological parameters of soil compaction process, however, there are few research methods that consider the system of soil-machine-technological parameters. The urgency of the soil compaction process, which ultimately determines the quality of construction products, was emphasized. The basic physical and mechanical properties of soil and technological parameters of the compaction process were given. Analysis of discrete mathematical model of interaction between roller and soil was carried out in order to determine the technological parameters of soil compaction process in the field of construction technologies. A rheological model to describe the soil properties was used. The differential equations of the interaction between roller and soil have been made. A numerical calculation method to solve the differential equations has been proposed. The basic technological parameters of soil compaction process by rollers have been determined - the thickness of soil layer to be compacted, the number of the roller passes, and the speed of the roller movement. The methodology of theoretical and experimental researches of interaction between roller and soil has been proposed in order to clarify the mathematical model and to find the technological parameters of the compaction process. Experimental research methods are based on the determination of the stress-strain state of soil and on the Fourier analysis of the experimental data. Fourier analysis of the experimental data makes it possible to analyze the qualitative energy spectrum of the interaction between roller and soil to determine the rational amplitude-frequency characteristics of the compaction process. Experimental studies allow obtaining such rheological properties of soil as elasticity, viscosity, coefficient of elastic resistance, etc. The main recommendations for the choice of compaction method depending on the type of soil have been proposed.
Energy-saving window systems: types, development, comparisons and perspectives
Authors: Yu. S. Riabinina  , T. Yu. Tsyfra
Published: May 2021

The tendency to use natural resources is decreasing; energy conservation and ecosystems are taking the first positions. Therefore, the use of glass finishing of buildings has become a starting point in the search for new technologies to save energy use, reduce the need for air conditioning and additional lighting. The developed smart glass is an advanced type of glass that can change transparency depending on different conditions, or convert sunlight into electricity that can be used for human needs. The work examines the appearance of the first types of smart windows, and further development of smart windows using various films, chemical and organic compounds. The prospect of using smart glass to improve natural lighting in various fields and the future possibilities of related technologies by comparing several types of smart glass. The main types of smart windows are presented: photochromic window, thermochromic window, electrochromic window, liquid crystal windows, windows based on suspended particles, window using a "thermal mirror". On the basis of the given characteristics of various technologies of smart glass, its advantages and disadvantages, as well as the associated difficulties, which should be resolved in the future, are revealed. The existing classification of smart windows by the type of use of films in them and their advantages and disadvantages of using. The main newest technologies of absorption of sunlight by the surface of the window and the conversion of light into electricity, the problem of achieving transparency by glass, and the tendency of solving this issue are described. On specific examples, the areas of application of glass with controlled transparency are considered, and the economic indicators obtained when it is used in buildings. The technology of using solar panels in the form of blinds and their influence on providing the building with energy is considered. improvement of some of its optical properties, contributed to a decrease in its cost, which leads to an increase in the availability of this material.
ДОСЛІДЖЕННЯ ШЛЯХІВ ПІДВИЩЕННЯ ЕФЕКТИВНОСТІ МОВНОЇ ПІДГОТОВКИ СЛУХАЧІВ ІНТЕНСИВНИХ КУРСІВ ІНОЗЕМНИХ МОВ ЗБРОЙНИХ СИЛ УКРАЇНИ
Authors: Пащук Юрій , Торська Марина
Published: May 2021

У статті досліджено основні проблемні питання щодо забезпечення належної результативності функціонування інтенсивних курсів із вивчення українськими військовослужбовцями іноземних мов, зокрема англійської мови. Проведено системний аналіз ефективності інтенсивних курсів іноземних мов у системі мовної підготовки Збройних Сил України за чотирма основними аспектами: організація навчальної діяльності; професійна підготовка та педагогічна майстерність науково-педагогічних працівників; всебічне забезпечення мовної підготовки; мотивація слухачів. Розглянуто дієвість реалізації перспективних напрямів розвитку і вдосконалення мовної підготовки особового складу, зокрема використання інноваційних методологій та методів вивчення іноземних мов, що ґрунтуються на застосуванні інформаційно-комп’ютерних технологій. Висвітлено основні підсумки впровадження змішаної (гібридної) форми у процес вивчення військовослужбовцями англійської мови на курсах іноземних мов за допомогою гнучкого поєднання традиційного очного (резидентного) навчання з дистанційною діяльністю слухачів. Цей підхід дозволяє підвищити навчальну мотивацію слухачів, а також розширити можливості їх доступу до ресурсів навчального віртуального простору. За результатами вказаного аналізу визначено ключові фактори, що сприяють підвищенню якості навчання особового складу англійській мові та опанування слухачами визначених цільових рівнів. На підставі вивчення передового досвіду організації мовної підготовки в Україні та збройних силах держав-партнерів запропоновано шляхи подальшого розвитку і підвищення мовленнєвої компетентності військовослужбовців з англійської мови до рівня не нижче СМР 2 відповідно до вимог мовного стандарту НАТО СТАНАГ 6001.
ВИКЛАДАННЯ УКРАЇНОЗНАВСТВА У ВИЩІЙ ШКОЛІ ЯК НАЦІОНАЛЬНА ПОТРЕБА
Authors: Петрук Наталія
Published: May 2021

Українознавство – це навчальна дисципліна, яка є частиною простору гуманітарних наук у вищій школі. Необхідність її викладання пов’язана з процесом формування інтегративного знання про Україну й українство, з актуальною потребою пізнання світоглядних, геополітичних, культурних основ українського буття. Важливі завдання покладаються на українознавство в контексті виховання особистості, органічного входження її в український світ, зміцнення почуття національної ідентичності. Українознавство – це націєтворча дисципліна, яка об’єктивно сприяє розвитку етнонаціональних процесів в Україні. Філософсько-гуманістичні основи українознавства проявляються в тому, що в межах цієї навчальної дисципліни органічно синтезуються процес пізнання українського світу і система виховання, університетська та народна педагогіка. Головна мета, яка досягається при викладанні курсу українознавства – це не лише знання, але й виховання громадянина з чіткою національною позицією і державницьким спрямуванням свідомості, стійкими гуманістичними етичними та естетичними принципами діяльності. Одним із нагальних завдань, що стоять перед вищою школою України, є формування цілісного методичного комплексу, змістом якого є вивчення становлення і розвитку української спільноти, визначення її місця у світі, аналіз діяльності світового українства, історії формування українського етносу. Статус українознавства в університеті повинен визначатися потребами осягнення й розуміння феномена України як соціокультурної реальності, дослідженням особливостей процесів націєтворення, виховання нового покоління молодих людей, формування національної ідентичності. Окреслюючи місце України в сучасному глобальному світі, українознавство орієнтоване на посилення процесів інкорпорування високих зразків національної культури в масову свідомість.Українознавство – це гуманітарна наука, що ґрунтується на поєднанні виховання та навчання. Це система знань і науково-освітня методологія. В такій ролі українознавство сприяє формуванню та розширенню гуманітарного простору у вищій школі. Отже, задовольняється потреба молодої людини в знанні про український етнос, про його історію та культуру, про шляхи націє- і державотворення.
Synthesis of pyrano[3,2-c]quinoline derivatives using catalyst prepared from L-proline and p-toluenesulfonic acid
Authors: Dung Pham Duc , Nguyen Tai Huu
Published: May 2021

This research prepared new generation of ionic liquid (Deep eutectic solvent, DES) from L-proline and p-toluenesulfonic acid. The ionic liquid has an asymmetric center in its structure because the original amino acid has an asymmetric center. Subsequently, the ionic liquid was studied catalytic activity in reactions of quinoline[3,2-c]pyrano derivatives synthesis. Conditions affecting the reaction and rate of the two products were also investigated. The results of the reaction conditions showed that aprotic polar solvents gave better yields and the best reaction conditions were: temperature: 50oC, time: 2 h, catalytic amount: 35% mol . The ratios of two product isomers showed that the reaction always forms a mixture of two diastereomers and the trans products were synthesized with moderate enantiomeric excess (40% for four derivatives) compared with the cis products. In addition, the results on catalytic reuse also showed that the catalyst had good usability without significant decreasing activity. When benzaldehyde and aniline were changed with their derivates bearing donating electron group (-CH3), the reaction yields slightly decrease. However, benzaldehyde bearing withdrawing electron group (-F) gave moderate yield.
Assessment of aerobic bacteria killing activity of low energry X-rays in potatoes
Authors: Sơn Nguyễn An , Cao Hai Van , Le Trieu Ngoc , Nguyen Giang Van , Nguyen Ha Thi Nguyet , Tran Quynh Ngoc Dieu , Bui Tien Nguyen Thuy , Le Duc Doan Dinh
Published: May 2021

Potato is one of popular agricultural products grown and used in the world with high effective economic and nutritional value. In potatoes, there are always have some harmful bacteria species due to the sources of exposure from the seed, soil as well as the post-harvest environment which make deceasing the quality and quantity of potatoes. Usually, irradiation with gamma isotope sources is used in food irradiation, however, the disadvantage of the gamma source is the safe shielding reason even without the use of irradiation. Nowadays, X-ray irradiation in food is one of the methods interest to storage in long time. The first advantage of X-ray irradiation is that most of aerobic bacteria in food is killed, but does it not change the quality of the potato. Moreever, the advantage of an X-ray generator is that it does not have to cover up radiation when not in use. In this study, we have used low energy X-rays emitted from X-ray generator MBR-1618R-BE (Hitachi -Japan) to study the ability to kill aerobic bacteria in potatoes grown in Da Lat. After preparation, potato samples were irradiated at doses ranging from 50 Gy to 5000 Gy. The irradiated samples were homogenized and inoculated on Nutrient Agar and incubated at 370C in an incubator to check the changes of aerobic bacteria. The research showed that the number of aerobic bacteria decreased dramatically to a dose of 1000 Gy (the aerobic bacteria was only less than 0,6%), despite a sharp increase in the dose of irradiation, this number decreased a little. The results also showed that D10 dose was 471,34 Gy.
PROSES PEREBUSAN TBS KELAPA SAWIT PADA STASIUN STERILIZER (Studi Kasus pada PT. Tri Bakti Sarimas PKS 2 Ibul, Riau)
Authors: Masruroh Lilis , Mardesci Hermiza
Published: May 2021

Proses produksi pengolahan tandan buah segar (TBS) kelapa sawit menjadi minyak sawit/Crude Palm Oil (CPO) melewati beberapa tahap pengolahan. Tahapan pengolahan tersebut dilakukan di beberapa stasiun, diantaranya stasiun penerimaan, stasiun sortasi, stasiun sterilizer, stasiun thresher, stasiun digester dan press, dan stasiun clarifikasi. Salah satu proses yang sangat penting berada pada stasiun sterilizer. Kualitas CPO yang dihasilkan, salah satunya bergantung pada proses perebusan di stasiun sterilizer. Proses perebusan TBS di PT. Tri Bakti Sarimas PKS 2 Ibul menggunakan sistem double peak, dengan tekanan sekitar 2,5 sampai 3 bar. Proses perebusan dilakukan selama 60 sampai 90 menit. Waktu proses yang cukup lama tersebut, akan mematangkan buah sampai ke lapisan bawah.
MODIFIKASI SELEKSI EAR TO ROW MENJADI SELEKSI SPIKE TO HOLE PADA GANDUM AUSTRALIA
Authors: Pamungkas Surya Seno , Murdono Djoko
Published: May 2021

Penelitian ini melakukan modifikasi seleksi “ear to row” pada jagung yang diubah menjadi “spike to hole” untuk penyesuaian pada tanaman gandum. Modifikasi yang dilakukan bertujuan untuk mengidentifikasi sekaligus menyeleksi dan mengelompokan potensi benih gandum Australia yang didapat dengan metode ini. Hasil dari penelitian ini disajikan dalam bentuk data deskriptif disertai gambar dokumentasi tanaman gandum Australia yang ditanam dalam penelitian ini. Setidaknya didapatkan 4 tipe gandum Australia yang berpontesi untuk dikembangkan pada iklim tropis Indonesia. Keempat tipe gandum yang didapat dalam penelitian ini memiliki kode tipe 1, tipe 2, tipe 1a, dan tipe 2a. Perbedaan keempat tipe gandum Australia dalam penelitian ini terlihat secara visual, yaitu pada tipe 1 memiliki warna malai tua berwarna kuning pucat sedangkan pada tipe 2 memiliki warna kuning emas yang terlihat lebih pekat. Pada tipe 1 dan tipe 2 juga memiliki umur panen pada 113HST lebih awal disbandingkan tipe 1a dan tipe 2a. Secara visual tipe 1a dan tipe 2a memiliki ciri yang serupa dengan tipe 1 dan tipe 2, hanya saja pada umur panen gandum tipe 1a dan 2a lebih lamat 14 hari yaitu pada 127HST.
ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI MAHASISWA MEMILIH PROGRAM STUDI (PRODI) PIAUD DI STIT NU AL FARABI PANGANDARAN
Authors: MASITOH IMAS
Published: May 2021

The PIAUD study program is one of the majors that has many interested people today. Because one of the requirements to be able to propose certification is completing undergraduate education, certainly the requirements according to study programs, namely the PIAUD for PIAUD teaching staff. This study used qualitative research methods and descriptive research. The results showed that, (1) out of the 13 students who were the subjects of the study, there was 1 student who chose the PIAUD Study Program owe to personal factors,2 students due to psychological factors, 1 student due to social factors, 5 students due to personal and cultural factors, 1 student due to social and cultural factors, 1 student due to personal and psychological factors, and there were 2 students due to psychological, social, and cultural factors; (2) the factors that most influence students that choosing PIAUD Study Program at STIT NU Al Farabi Pangandaran are personal and cultural factors, which are 5 students.Keywords: factor analysis, choosing study programs, PIAUD study programs.
PERAN GURU DALAM MENINGKATKAN KUALITAS PROSES BELAJAR MENGAJAR DI MTS AL-QAMARIYAH POPIDOLON
Authors: SALEH SUMA K , TAHAWALI MASRION
Published: May 2021

Adapun Tujuan  penelitian untuk mengetahui peran guru Dalam Meningkatkan kualitas Proses Belajar Mengajar di MTs AL-Qamariyah Popidolon Kecamatan liang kabupaten banggai kepulaun. Metodologi dalam penulisan ini menggunakan pendekatan kualitatif, pengumpulan data menggunakan teknik observasi dan wawancara. Hasil penelitian  menujukan bahwa peran guru dalam meningkatkan kualitas proses belajar mengajar Di MTs Al- Qamariyah Popidolon Kecamatan Liang Kabupaten Banggai Kepulauan, dari hasil penelitian peneliti mendapatkan peran seorang guru di sekolah tersebut sangat baik dalam mengembangkan peningkatan kualitas proses belajar mengajar Kata kunci : Peran; Guru; Kualitas; Belajar; Mengajar