bluuebunny/crossref_metadata_2025_split huggingface dataset:
Phenomenological models of the main characteristics of a step optical fiber
Authors: Odegov Nikolay Anatoliyovich , Hlushchenko Iryna Oleksandrivna , Duridivka Vitaliy Olehovich 
Published: October 2021

The paper considers a group of polynomial models of various characteristics of an optical fiber (OF) depending on the wavelength and chemical composition of the fiber. A method for structural identification of such models is proposed. The following characteristics are considered: the refractive index of the fiber core and cladding, group refractive index, group velocity, dispersion coefficients, numerical aperture, cutoff wavelength of the fundamental mode, etc. An analysis of the well-known Cauchy, Lorentz-Lorenz equations, Sellmeier’s formulas, etc. is given in relation to the problem being solved. The applied method of structural identification provides for the decomposition of a complex computational problem into simpler ones. This technique involves the identification of polynomial models for different samples of a substance. After that, structural identification is performed by the parameter of the additives to quartz glass. The proposed method and models are tested on the example of parameter values: the wavelength range is from 0.8 to 1.8 μm, the type of optical fiber is single-mode, and the refractive index is stepped. For calculations, the tabular values of the coefficients of the Sellmeier formula for SiO2 with GeO2 additions from 0% to 13.5% were used. It is shown that the dependence of the main characteristics of OF on wavelength and chemical composition is modeled with sufficient accuracy by a polynomial model. Indicators of the highest degree on two arguments can be limited to the third degree. The synthesized models have an interpolation and extrapolation error in the considered ranges of the order of 0.001%. This makes it possible to recommend them for scientific and engineering applications, as well as for solving problems of the production of organic matter with predictable characteristics.
علاقة تسامي الذات بالاستقرار النفسي لدى طلبة الجامعة
Authors: اسماعيل حسين آمال 
Published: October 2021

يهدف البحث الحالي الى تعرف:
1 – تسامي الذات لدى طلبة الجامعة
2- الاستقرار النفسي لدى طلبة الجامعة
3- العلاقة الارتباطية بين تسامي الذات والاستقرار النفسي لدى طلبة الجامعة
4- الفرق في العلاقة الارتباطية بين تسامي الذات والاستقرار النفسي وفقاً لمتغيري الجنس (ذكور- اناث) والتخصص (علمي –انساني) . وتحدد البحث الحالي بطلبة الجامعة المستنصرية للعام الدراسي (2020-2021) للجنسين (ذكور- أناث) وللتخصصين (علمي- انساني) للدراسة الصباحية . وقامت الباحثة ببناء مقياس تسامي الذات يتكون من 24( فقرة ) وكذلك بناء مقياس الاستقرار النفسي يتكون من (20 فقرة ) تم تطبيقهما على عينة البحث البالغة(200) طالباً وطالبة ومع اجراء المعالجات الاحصائية توصلت الى النتائج الآتية :

وجود سمة التسامي لدى طلبة الجامعة
وجود الاستقرار النفسي لدى طلبة الجامعة
ظهرت علاقة ايجابية بين تسامي الذات والاستقرار النفسي لدى طلبة الجامعة
ظهر وجود فروق ذات دلالة احصائية بين تسامي الذات والاستقرار النفسي وفقا لمتغير الجنس ولصالح الاناث وكذلك وفقا لمتغير التخصص ولصالح التخصص الانساني . ثم ظهر البحث بعدد من التوصيات والمقترحات .
آراء المعلم والطلاب تجاه السلوك العدوانی في إدارة الصف فی مستوى الكلية
Authors: A. Ahmed Shano , M. Abdullah Ameera 
Published: October 2021

يركز البحث الحالي في التعليم على معرفة وجهات نظر مختلفة حول إصلاح إدارة الصف الدراسي. فإن التعامل مع السلوك العدوانی و مواجهـته في الصف يسبب مصدر قلق كبير للمعلمين. بشكل عام السلوكيات التي تم تحديدها في هذا البحث تعتبرالقضايا التي تشغل بال المعلمين الجامعات على جميع الأصعدة هذه الأيام مثل، عدم الالتزام ، وعدم الاصغاء ، وضعف التركيز وعدم الانتباه ، والتحدث المستمر مع زملاء الدراسة ، وإزعاج الآخرين والجدل عند التوبيخ والتأخيرهو أكثر شيوع من سلوك العدوانی لدی الطلبة أعلن عنه المعلمون ، واستخدام الهواتف المحمولة في الصف ،ومنع الآخرين من المشاركة في أنشطة الصف. حدد المعلمون أيضاً أن عدم وجود الحافز وتجنب الواجب الصف لدی الطلبة یعتبر من سوء سلوك متكرر. من الواضح أن هذه السلوكيات يتداخل مع إلقاء المحاضرات وینقص فرص تعلم الطلبة.
بالإضافة، عندما تحدث السلوكيات العدوانیة شائعة في الصف التعليم العالي يكون لدى المعلمين خيارات للتعامل مع كل موقف في عملية التدريس والتعلم.و مع ذلك ، أفضل غایة التربوين والمعلمين هو إنهاء ارتکاب وجعل الطلاب المزعجين يواصلون مشاركتهم المدنية وتقدمهم في الصف.
فإن البحث الحالی تستهدف إجراء مقارنة بين وجهة نظرکل الاساتذة و الطلاب الجامعی حول أسباب السلوك العدوانی لدی طالبة ، والبحث في الممارسة التقنيات الحالية لتحسین السلوك في الصف من قبل الاساتذة الجامعة.
لتحقيق الغرض الرئيسي للبحث تم تصميم استبيانين مختلفين، وللتحقق من کیفیة طریقة استخدام استراتيجيات الاساتذة لتحسین سلوك العدوانی لدی الطلبة ، تم تطوير استبيان عن استراتيجيات تحسین السلوك ، وفي هذا الصدد ، تم اختيار ١٠٠ طالب وطالبة و ٥٠ استاذً من أساتذة الجامعة من مختلف الأقسام بشكل عشوائي في كلية التربية الأساسية / جامعة صلاح الدين للعام الدراسی ٢٠١٩-٢٠٢٠. بالإضافة إلى ذلك ، هذا البحث هو محاولة للعثور على إجابة عدد من الأسئلة المتعلقة بسلوك العدوانی للطالب: وجهات نظر المعلمين والطلاب تجاه عوامل السلوك العدوانی ، واختلاف بين وجهات نظرهم حول أسباب السلوك العدوانی للطلاب.
TO THE QUESTION OF GENERALIZATION OF STRUCTURAL-PARAMETRIC SHAPING OF TECHNICAL OBJECTS
Authors: Volodymyr Vanin  , Gennadii Virchenko  , Petro Yablonskyi  
Published: October 2021

The current stage of evolution of the applied geometry scientific school of the Igor Sikorsky Kyiv Polytechnic Institute is characterized, in particular, by the creation of an integrated complex methodology for shaping various technical objects to improve the efficiency of their design, manufacture and operation. At the same time, the tasks of developing the appropriate theoretical foundations, generalization of the relevant used means, improvement of methodological, informational and software support of computer systems, and practical implementation of the obtained results are very important.The structural-parametric approach to geometric modeling proposed by the applied geometry scientific school of the Igor Sikorsky Kyiv Polytechnic Institute is the basis for integrated complex automated shaping of various industrial products. Therefore, further improvement of this methodology due to the progress of the existing mathematical apparatus, the development of new and upgrading of existing methods, techniques and algorithms is an urgent scientific and applied problem.The publication presents a new method for generalization of structural-parametric geometric models by applying to their elements cyclic, ie repetitive, operations of shaping. The presented invariant method is illustrated by the example of computer-aided design of such components of agricultural machines as disk working bodies of tillage implements. At the same time, the geometric classification of these technical objects, the techniques for their computer solid-state shaping, a method for reducing the area of design solutions and a generalized contour, described in the previous works of the authors, were used.Thus, this work is the expansion of scientific achievements obtained at the Department of Descriptive Geometry, Engineering and Computer Graphics of Igor Sikorsky Kyiv Polytechnic Institute, a certain theoretical generalization of them. The article outlines the prospects for further research in the analyzed scientific direction for the development of an appropriate integrated complex methodology for shaping of variety technical objects.
Pengaruh Persepsi Dukungan Organisasi, Komitmen Organisasi, dan Spiritualitas Kerja Terhadap Produktivitas Kerja Dengan Organizational Citizenship Behavior (OCB) Sebagai Variabel Intervening Pada Direktorat Sumber Daya Manusia Universitas Airlangga
Authors: Aqdami Rizki Kurnia 
Published: October 2021

Produktivitas kerja menjadi topik utama pembahasan dalam era persaingan tata kelola di perguruan tinggi termasuk di Universitas Airlangga. Penelitian ini bertujuan untuk mencari hubungan antara persepsi dukungan organisasi, komitmen organisasi, dan spiritualitas kerja terhadap produktivitas kerja baik secara langsung maupun tidak langsung melalui variabel organizational citizenship behavior. Setelah dilakukan uji menggunakan metode structural equation modelling (SEM) kepada pegawai dan tenaga magang di Direktorat Sumber Daya Manusia Universitas Airlangga sebanyak 50 responden diperoleh hasil hanya variabel spiritualitas kerja yang berpengaruh signifikan dan positif terhadap variabel organizational citizenship behavior (OCB) dan variabel Organizational citizenship behavior tidak berpengaruh signifikan sebagai variabel intervening antara variabel persepsi dukungan organisasi, komitmen organisasi, dan spiritualitas kerja terhadap produktivitas kerja. Penelitian selanjutnya diharapkan lebih dapat memperbanyak sampel data dan pemilihan variabel disesuaikan dengan karakteristik responden.
Penggunaan English Vocabulary Games Untuk Meningkatkan Minat Belajar Bahasa Inggris Siswa Sekolah Dasar Inpres Karot Selama Masa Pandemi Covid-19
Authors: Wanti Kristina Kresna , Alur Katarina Ilaning , Oktaviana Maria , Daar Gabriel Fredi 
Published: October 2021

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan minat belajar bahasa Inggris Sekolah Dasar. Kegiatan dilakukan di Sekolah dasar Inpres Karot, Kabupaten Manggarai NTT. Kegiatan dilakukan dalam bentuk praktik dan simulasi bermain games kosa kata berbahasa Inggris. Berdasarkan hasil evaluasi melalui obervasi, ditemukan bahwa siswa SDI Karot senang dan antusias mengikuti kegiatan pembelajaran bahasa Inggris dengan menggunakan Vocabulary Games. Ini terlihat pada keaktifan dan partisipasi siswa dalam mengikuti diskusi kelompok dan dalam menjawab setiap pertanyaan yang diajukan pelaksana PKM. Dengan demikian dapat direkomendasikan bahwa penerapan Vocabulary Games hendaknya selalu diimplementasikan dalam kegiatan pembelajaran kepada siswa SD. Konsekuensinya adalah guru mempersiapkan dan merancang media secara sistematis yang dapat menunjang penerapan English Vocabulary Games.Kata Kunci: Bahasa Inggris, Vocabulary Games, Minat, Siswa Sekolah Dasar This community service activity aims to increase interest in learning English in Elementary School. The activity was carried out at the Karot Inpres Elementary School, Manggarai Regency, NTT. Activities carried out in the form of practice and simulation playing English vocabulary games. Based on the results of the evaluation through observation, it was found that SDI Karot students were happy and enthusiastic about participating in English learning activities using Vocabulary Games. This can be seen in the activeness and participation of students in participating in group discussions and in answering every question posed by PKM implementers. Thus, it can be recommended that the implementation of Vocabulary Games should always be implemented in learning activities for elementary school students. The consequence is that teachers prepare and design media systematically that can support the implementation of English Vocabulary Games.Keywords: English, Vocabulary Games, Interest, Elementary School Students
TO ASSESS SAFETY OF WITHHOLDING ANTITHROMBOTIC THERAPY IN PATIENTS WITH LOW OR INTERMEDIATE PROBABILITY OF PULMONARY EMBOLISM
Authors: Mangal Archi , Arya Mahendra Kumar , Khatana Devendra Kumar , Singh Dr. Sheetal 
Published: October 2021

Background & Method: The study was carried out in the Department of Radio diagnosis, Index Medical College, Hospital & Research Centre, Indore, M.P. including 100 chronic bedridden patients with an aim to assess safety of withholding antithrombotic therapy in patients with low or intermediate probability of pulmonary embolism.
Result: Males represented about 62% of the entire sample. Majority of male patients were in age group 50 and above. Majority (29%) of female patients were of age group of 20 to 40 yrs. On the basis of B-mode sonography and colour Doppler 20% patients were diagnosed to have acute deep vein thrombosis and 12 % patients were diagnosed to have chronic deep vein thrombosis. Out of 100 chronic bedridden patients in the study, 40% were suspected to have deep vein thrombosis on the basis of clinical signs,45% had a positive d-dimer test, 28% were positive on impedence plethysmography. 30% patients were diagnosed to have deep vein thrombosis by B mode sonography and 32% were diagnosed to have deep vein thrombosis by colour Doppler.
Conclusion: Only 32 patients were positive for deep vein thrombosis out of 100 patients so it is safe to withhold unnecessary anticoagulation therapy in all chronic bed ridden patients because even after 3 month follow up only 1% patients were positive. Impedence plethysmography is less sensitive than ultrasonography and D-dimer test is more sensitive but it lacks specificity so ultrasound and colour Doppler is more sensitive in clinically suspected DVT patients. Ultrasonography and colour Doppler is better predictor of DVT because it is more sensitive and specific, non-invasive, painless, widely available, easy to use, less expensive, no ionizing radiation.
Keywords: antithrombotic, pulmonary &embolism.
Financing of Preschool Education in Ukraine in 1919–1933: Historical and Legal, Historical and Economic Aspects
Authors: Ткаченко С. О. , Головко О. В. 
Published: October 2021

Historical and legal, historical and economic aspects of the process of formation and development of the system of public preschool education in Ukrainian SSR in 20s – early 30s of the XX century have been analyzed.
It has been proved that the issue of preschool education with the victory of the Soviet government took its place in the general system of education’s development, which the Bolsheviks began to introduce first in the industrial regions in 1919, and then throughout Ukrainian SSR.
The authors have the legal basis of the process of formation and development of the system of public preschool education in Soviet Ukraine in 1919–1933. The upbringing of children from the early age, according to the Program of the party and the decisions of the Soviet government, had to become the complete prerogative of public educational agencies.
The main reasons for the rapid growth in the number of institutions of state and public education of children of preschool age have been analyzed. That process was caused by the economic devastation in Ukraine as a result of the First World and Civil Wars, which doomed more than one million children to starvation. State authorities were forced to make certain commitments to provide food and education for deprived children.
There is a destruction of the old pre-revolutionary pedagogy, which considered preschool education only as a forced measure for working parents and orphans, by giving preference to family upbringing of children at an early stage of life.
It has been proved that the system of legal regulation of financing of public preschool education in Ukrainian SSR at that time has passed three stages of development:
– 1919–1922 – financing of preschool institutions was carried out in a centralized way by monthly allocations from the republican budget, as well as from the budget of central agencies;
– 1923–1927 – financing of preschool institutions was transferred from the republican to local budgets;
– 1928–1933 – attraction of state and local councils’ budgets, funds from trade unions, other institutions and enterprises, parental payment. There was the final consolidation of budgetary sources of maintenance of preschool education system in the legislation.
There was the thesis that the legal consolidation of financing of preschool education in Ukraine should reflect the priority of public importance and state support of this field of educational activity from the standpoint of investing in the future of the state, forming the foundations of a harmonious personality as a prerequisite for successful secondary and later higher education.
It has been emphasized that the financing of preschool education and its legal consolidation should be aimed at stimulating the work of educational and pedagogical staff, attracting highly qualified specialists to this field. Society and the state must realize that this category of professionals have the prerequisites for successful development, prosperity of future generations.
Papel de la radiocirugía en el tratamiento de malformaciones arterio-venosas cerebrales : revisión de la literatura y análisis de resultados.
Authors: Ricagni Leandro , Rivero Fuentes Milexys , Aguiar Sergio , Sallabanda Kita 
Published: October 2021

Introducción: las malformaciones arteriovenosas (MAVs) son patologías infrecuentes, con una incidencia estimada de 1,1 en 100.000 habitantes. El tratamiento puede ser embolización vascular, microcirugía o radiocirugía estereotáctica. Por su baja incidencia, resulta difícil seleccionar un grupo homogéneo para un seguimiento prospectivo a largo plazo, y en base a resultados estadísticamente significativos definir una conducta. Objetivo: establecer el rol de la radiocirugía estereotáctica en el tratamiento de malformaciones arteriovenosas cerebrales. Métodos: se realizó una búsqueda en bases de datos para un análisis descriptivo de ensayos clínicos en pacientes con malformaciones arteriovenosas tratados con radiocirugía estereotáctica, sin radioterapia previa. Resultados: fueron seleccionados 26 artículos. Los resultados provenientes en su mayoría de estudios retrospectivos. La obliteración estimada para malformaciones arteriovenosas pequeñas o moderadas con radiocirugía estereotáctica varía entre un 61% a 90%, con una morbilidad menor a 5%. La respuesta al tratamiento varía según el tamaño del nido, la dosis y la no embolización previa. Para las malformaciones arteriovenosas gigantes la tasa de obliteración descrita es del 35% al 58%, con una morbilidad que alcanza el 15%. Conclusión: la radiocirugía estereotáctica parece ser una opción efectiva y segura cuando no se plantea microcirugía, con tasas satisfactorias de obliteración, sin aumento del riesgo de sangrado en el periodo de latencia. En malformaciones arteriovenosas gigantes la radiocirugía muestra una menor tasa de respuesta completa por lo que el tratamiento intervencionista multimodal es justificable. La radiocirugía estereotáctica ha demostrado ser segura y efectiva, con un papel preponderante en malformaciones arteriovenosas pequeñas, profundas o en áreas elocuentes.
A Co-delivery System Based on a Dimeric Prodrug and Star-Shaped Polymeric Prodrug Micelles for Drug Delivery
Authors: Zhou Man , Luo Yan , Zeng Weijia , Yang Xiaoqing , Chen Tingting , Zhang Lulu , He Xiaoyan , Yi Xiuguang , Li Yongxiu , Yi Xiaoqing 
Published: October 2021

Chemotherapy is one of the commonly used therapies for the treatment of malignant tumors. Insufficient drug-loading capacity is the major challenge for polymeric micelle–based drug delivery systems of chemotherapy. Here, the redox-responsive star-shaped polymeric prodrug (PSSP) and the dimeric prodrug of paclitaxel (PTX) were prepared. Then the dimeric prodrug of PTX (diPTX, diP) was loaded into the core of the star-shaped polymeric prodrug micelles of PSSP by hydrophobic interaction forming the redox-responsive prodrug micelles of diPTX@PSSP for intracellular drug release in tumor cells. The hydrodynamic diameter of diPTX@PSSP nanoparticles was 114.3 nm ± 2.1 (PDI = 0.219 ± 0.016), and the micelles had long-term colloidal stability and the drug-loading content (DLC) of diPTX and PTX is 16.7 and 46.9%, respectively. The prepared micelles could broke under the reductive microenvironment within tumor cells, as a result, the dimeric prodrug of diP and polymeric prodrug micelles of PSSP were rapidly disassembled, leading to the rapid release of intracellular drugs. In vitro release studies showed that under the condition of reduced glutathione (GSH) (10 mM), the release of PTX was significantly accelerated with approximately 86.6% released within 21 h, and the released PTX in cytoplasm could promote the disintegration of microtubules and induce cell apoptosis. These results indicated that the new type of this reduction-sensitive nanodrug delivery system based on dimeric prodrug@polymeric prodrug micelles would be a promising technology in chemotherapy.
Cardiologic Long-Term Follow-Up of Patients Treated With Chest Radiotherapy: When and How?
Authors: Lestuzzi Chiara , Mascarin Maurizio , Coassin Elisa , Canale Maria Laura , Turazza Fabio 
Published: October 2021

Introduction: Radiotherapy may cause valvular (VHD), pericardial, coronary artery disease (CAD), left ventricular dysfunction (LVD), arrhythmias. The risk of radiation induced heart disease (RIHD) increases over time. The current guidelines suggest a screening for RIHD every 5 years in the long-term survivors who had been treated by chest RT.Methods: We reviewed the clinical and instrumental data of 106 patients diagnosed with RIHD. In one group (Group A: 69 patients) RIHD was diagnosed in an asymptomatic phase through a screening with ECG, echocardiogram and stress test. A second group (37 patients) was seen when RIHD was symptomatic. We compared the characteristics of the two groups at the time of RT, of RIHD detection and at last follow-up.Results: Overall, 64 patients (60%) had CAD (associated to other RIHD in 18); 39 (36.7%) had LVD (isolated in 20); 24 (22.6%) had VHD (isolated in 10 cases). The interval between the last negative test and the diagnosis of moderate or severe RIHD was &lt;5 years in 26 patients, and &lt;4 years in 18. In group A, 63% of the patients with CAD had silent ischemia. The two groups did not differ with regard to type of tumor, cardiovascular risk factors, use of anthracycline-based chemotherapy, age at RT treatment, radiation dose and interval between RT and toxicity detection. The mean time from RT and RIHD was 16 years in group A and 15 in group B. Interventional therapy at RIHD diagnosis was more frequent in group B (54 vs. 30%, p &lt; 0.05). At last follow-up, 27 patients had died (12 of cancer, 9 of cardiac causes, 6 of other causes); mean ejection fraction was 60% in group A and 50% in group B (p &lt; 0.01). Patients with ejection fraction ≤ 50% were 14.5% in group A and 40% in group B (p &lt; 0.01).Conclusions: Clinically relevant RIHD become evident at a mean interval of 16 years after RT. The most frequent clinical manifestations are CAD and LVD. RIHD diagnosis in asymptomatic patients may preserve their cardiac function with timely interventions. We suggest -after 10 years from radiotherapy- a screening every 2–3 years.