bluuebunny/crossref_metadata_2025 huggingface dataset:
Deep Reinforcement Learning and Convex Mean-Variance Optimisation for Portfolio Management
Authors: Pretorius Ruan , van Zyl Terence
Published: February 2022

Traditional portfolio management methods can incorporate specific investor preferences but rely on accurate forecasts of asset returns and covariances. Reinforcement learning (RL) methods do not rely on these explicit forecasts and are better suited for multi-stage decision processes. To address limitations of the evaluated research, experiments were conducted on three markets in different economies with different overall trends. By incorporating specific investor preferences into our RL models’ reward functions, a more comprehensive comparison could be made to traditional methods in risk-return space. Transaction costs were also modelled more realistically by including nonlinear changes introduced by market volatility and trading volume. The results of this study suggest that there can be an advantage to using RL methods compared to traditional convex mean-variance optimisation methods under certain market conditions. Our RL models could significantly outperform traditional single-period optimisation (SPO) and multi-period optimisation (MPO) models in upward trending markets, but only up to specific risk limits. In sideways trending markets, the performance of SPO and MPO models can be closely matched by our RL models for the majority of the excess risk range tested. The specific market conditions under which these models could outperform each other highlight the importance of a more comprehensive comparison of Pareto optimal frontiers in risk-return space. These frontiers give investors a more granular view of which models might provide better performance for their specific risk tolerance or return targets.
Deep Reinforcement Learning in Human Activity Recognition: A Survey
Authors: Nikpour Bahareh , Sinodinos Dimitrios , Armanfard Narges
Published: February 2022

  Human activity recognition is a popular research field in computer vision that has already been widely studied. However, it is still an active research field since it plays an important role in many current and emerging real-world intelligent systems, like visual surveillance and human-computer interaction. Deep Reinforcement Learning (DRL) has recently been employed to address the activity recognition problem with various purposes, such as finding attention in video data or obtaining the best network structure. DRL-based human activity recognition has only been around for a short time, and it is a challenging, novel field of study. Therefore, to facilitate further research in this field, we have constructed a comprehensive survey on activity recognition methods that incorporate deep reinforcement learning. Towards the end of this survey, we summarize key challenges and open problems in this area that can be addressed by researchers in the future.  
Organization of scientific and methodological activity of the National Scientific Agricultural Library
Authors: Kapralyuk Oksana
Published: February 2022

The article gives an overview of the directions of scientific and methodological activity of the National Scientific Agricultural Library (NSAL) of the NAAS as a scientific methodological and coordination center of the network of agricultural libraries. It is noted that the specialists of the scientific and methodological work and abstracting department of the NSAL of the NAAS take part in the basic research related to the information support of the agroindustrial complex in the conditions of eurointegration processes, and their results are reflected in the articles, standards and guidelines recommended by the heads of institutions, scientists and specialists of the ministries and departments of Ukraine involved in the creation and dissemination of agricultural scientific and technical information. It is noted that the NSAL NAAS participates in improving the professional competence of library workers through training courses, which are organized annually by the Library together with the Institute of Postgraduate Education of the National University of Bioresources and Nature Management of Ukraine since 2002. Over the entire existence of the courses, more than 700 people have attended the lectures.It is emphasized that the issues of development of corporate interaction, cooperation of libraries and their integration into a single system are given priority. The main purpose of corporate interaction is to unite the information potential of each region of Ukraine to strengthen the information support of agrarian science, education, production, increase the role of agricultural libraries in the development of the state and the formation of civil society, more effective use of the world information potential. Territorial associations are headed by the main libraries, which currently number 22. The focus is on the scientific and analytical activities of the NSAL NAAS as a methodological center, which, since 2001, launched the publication of the Bulletin NAAN in order to present it in this area of activity. It annually publishes an overview of the activities of the network libraries by major areas of their work, scientific and methodological materials and official documents, as well as articles on the anniversary and the memory of colleagues.
Effects-based operations
Authors: Senchenko Mykola
Published: February 2022

In recent times, in addition to traditional diplomatic actions and hostilities, the use of indirect action technologies, which are undermining the rival state from within, is increasingly being used to address the current world interstate problems. There are many called such technologies: "soft power", "reasonable power", "controlled chaos", "hybrid wars" and more. Within these technologies, special operations known as " еffects based operations" (EBO) are used. The article examines the implications of such operations and the future of countries, provided they are applied globally.
It is noted that the "network structures", which were created in advance in the territory of the country of the victim of aggression, are used for the implementation of the EBO algorithms. This means that the formation of a "network" in the target countries is the deprivation of states, peoples, armies and governments of independence, sovereignty and subjectivity, transforming them into rigidly managed, programmed mechanisms. Base effect operations are special algorithms for organizational weapons for conducting warfare.
The main technological tool of network war involved in the implementation of the EBO — "network nodes" is considered. These include civil society organizations: non-governmental organizations (NGOs), non-profit organizations (NРOs), foundations, civic organizations, movements and political parties, newspapers and magazines, youth organizations, as well as corrupt officials and human rights defenders.
It is noted that the main purpose of organizational and informational aggression is a qualitative change of traditional cultural and spiritual life, violation of the continuity of national ideals and values, dismantling of historical memory. The information pressure that the initiates of the orgwein exert on a continuous and continuous basis is capable of damaging unifying national elements by distorting or destroying the traditional points of unity of the nation (orchestral weapons) of value.
The Ukrainian cultural paradigm on the pages of the Universum magazine (1993—2018)
Authors: Romanchuk Viktoriya
Published: February 2022

In the article there are reviewed cultural processes in Ukraine, fixed during 1993—2018 on the pages of the magazine of political science, futurology, economics, science and culture Universum (http://universum.lviv.ua). The important value of the national culture for the self-organization of the society under the modern circumstances of the state-building is shown. The organizing and mobilizing role of the culture in the incipience of the political nation and in the approval of its identity is displayed. The achievements of the magazine in the branch of the cultural interests of the edition are analyzed which is marked with the understanding of the need to fill up the national informational space with the modern meanings and values from acquisitions of the world cultural treasury.
Instead of the era of classical humanitarian culture, when clearly structured knowledge was transmitted through traditional school education and consolidated in higher education by studying different disciplines, giving the opportunity to get answers to the basic questions of being, the culture came fragmentary. In it, knowledge is formed through mass communication — fragmentary, often by accident. Such a quasi-knowledge violates a person's ability to think independently, leads to a loss of systematic and logical analysis skills, the ability to form / create a chain of causes and effects inherent in the phenomena of the world.
In its publications on cultural and artistic subjects, the Universum magazine constantly emphasizes that new conditions, dictated by the requirements of the information society, require the involvement of the intellectual potential of their nation, which is "grown" and operates most effectively in the system of implementation of a single linguistic, educational, cultural, and cultural policy of the state. In other words, the society will be ready for cultural competitions and dialogue of culture sat a high civilization level only at the time, when a modern system of the value orientations in the public consciousness will be established; whose spiritual and moral focus is the national idea.
Status and competence transformations of the modern editor
Authors: Bidun Anna
Published: February 2022

This article reviews the key status and competence transformations of the modern editor role, which determine the specifics of his/her professional activity with the content of the book at preliminary publishing, publishing and post-publishing stages. Due to ascertaining of the editor status and his/her field of responsibility transformations, as well as observation of current global trends, it outlines the key challenges and opportunities of the modern editor, requiring updating the established concepts of editorial and publishing processes within which editor develops activities, refinement of editor's professional knowledge and skills related to the book promotion using various media tools and different media platforms. Moreover, it highlights advantages of the project approach in engagement with the author and the content of the book, emphasizes the risks associated with author's unconstructive behaviour in collaboration with the editor, exposes various aspects of marketing forecasting of future edition perception by the target audience. The article raises the problem of professional editor's self-instruction, affecting not only his status in the professional environment, but also determining the degree of ambition and attractiveness of the publishing project he creates for other book agents to a certain extent. It reveals a contemporary need for the editor to navigate among the media trends and features of media consumption for developing communications with book agents and readers.
The article outlines editor's field of activity and responsibility in the promotion of publishing projects, developing a value field, which is of the highest importance for them, as well as the importance of professional and business authority of the editor in setting media image of the publishing house and its activities. Furthermore, attention is paid to the differences of the professional status of editor between Ukrainian and foreign publishers, the existing tendential gap among the attention paid to them not only within the professional audience but also from the reader's perspective.
FAKTOR-FAKTOR YANG MEMPENGARUHI PENYERAPAN TENAGA KERJA PADA UMKM INDUSTRI ROTI DI KOTA PAYAKUMBUH
Authors: Mega Amelia Putri, John Nefri, dan Retno Setiawan
Published: February 2022

Penelitian ini bertujuan untuk mengetahui pengaruh upah, modal, nilai penjualan, tingkat produktifitas dan tingkat pendidikan tenaga kerja terhadap penyerapan tenaga kerja pada UMKM industri roti di Kota Payakumbuh. Penelitian ini dilakukan terhadap 30 pengusaha pemilik industri roti yang masih aktif dan beroperasi. Data dalam penelitian ini adalah data primer yang diambil dengan menggunakan metode wawancara berpedoman pada kuesioner dan data sekunder diperoleh dengan metode kepustakaan. Metode analisis yang digunakan dalam penelitian ini adalah analisis regresi linier berganda dengan bantuan SPSS 26 for Windows. Hasil penelitian menunjukkan bahwa variabel upah (X1), nilai penjualan (X3) dan tingkat pendidikan tenaga kerja (X5) berpengaruh positif dan signifikan terhadap penyerapan tenaga kerja. Sedangkan variabel modal (X4) dan tingkat produktifitas tenaga kerja (X4) berpengaruh tidak signifikan terhadap penyerapan tenaga kerja pada UMKM industri roti di Kota Payakumbuh.
INDEKS EKOLOGI GASTROPODA SEBAGAI BIOINDIKATOR PENCEMARAN AIR DI EKOWISATA SITU BAGENDIT KECAMATAN BANYURESMI KABUPATEN GARUT
Authors: Sriwahjuningsih, Hudi Hernawan, dan Nurul Fitri
Published: February 2022

Beberapa aktivitas masyarakat disekitar perairan situ secara langsung maupun tidak langsung dapat berdampak terhadap kualitas perairan sungai diantaranya dapat mempengaruhi faktor-faktor biotik dan abiotik yang mengakibatkan rusaknya ekosistem di perairan. Penelitian bertujuan untuk mengetahui indeks ekologi gastropoda sebagai bioindikator pencemaran air yang terdapat di Ekowisa Situ Bagendit pada bulan April – Juni 2021. Metode penelitian yang digunakan adalah deskriptif dengan pendekatan kualitatif, metode pengumpulan data dan metode penentuan stasiun dengan purposive sampling method terhadap 10 stasiun. Sampel yang diambil meliputi pengukuran parameter biotik (gastropoda) serta abiotik. Hasil pengukuran parameter biotik penelitian menunjukkan  famili dari tiga stasiun berjumlah 5 famili diantaranya famili Thiaridae, famili Ampullariidae, famili Viviparidae, Lymnaeidae dan Famili Littorinidae, dan terdiri dari 16 spesies dengan total 1495 individu. Rata-rata nilai indeks keanekaragaman adalah 1,6860 termasuk kategori sedang, kenekaragaman tertinggi adalah spesies Melanoides formensis (0,3570) dan terendah adalah, spesies  Thiara rufis (0,0044). Rata-rata nilai indeks kelimpahan adalah, 100,6091 termasuk kategori sangat banyak, nilai kelimpahan tertinggi pada spesies Melanoides formosensis (28,2274) dan terendah pada spesies Thiara rufis (0,01). Rata-rata nilai indeks dominansi adalah, 0,1852 termasuk kategori rendah nilai dominansi tertinggi pada spesies Melanoides formosensis (0,0796)  dominansi terendah pada spesies Thiara rufis (0). Rata-rata nilai indeks kemerataan adalah, 28,5078 termasuk kategori stabil, nilai kemerataan tertinggi pada spesies Pomaceae maculata (3,5338) dan Lymnea Rubiginosa (3,5338) terendah pada spesies Thiara rufis (0). Rata-rata nilai indeks kepadatan adalah, 149,5 termasuk kategori tinggi, nilai kepadatan tertinggi pada spesies Melanoides formenssis (42,2) terendah pada spesies Thiara rufis (0,1).
Use of neutrophil/lymphocyte ratio (NLR) and lymphocyte/monocyte ratio (LMR) as biomarkers in the differential diagnosis of malignant solitary pulmonary nodules
Authors: Kuru Murat , Altinok Tamer
Published: February 2022

Objective: Histopathological diagnosis of atypical lung nodules is often not possible in the preoperative period. This study evaluates the diagnostic value of neutrophil/lymphocyte ratio (NLR) and lymphocyte/monocyte ratio (LMR) as biomarkers in the differentiation of undiagnosed lung nodules.
Material and Methods: The study includes 91 patients (21 females, 70 males, mean age: 59.35 ± 11.85, age interval 20-81) operated on for lung nodules between September 2010 and September 2020. Age, gender, type of operation performed, histopathological type of the tumor, nodule size, SUVmax values measured on PET-CT, preoperative neutrophil/lymphocyte, and lymphocyte/monocyte ratios were analyzed retrospectively. These values were compared in patients with primary lung cancer (Group 1) and patients with secondary lung cancer, that is, patients with lung metastases from other organs (Group 2).
Results: NLR was statistically significantly higher in group 2 patients (N: 37)(3.38 ± 2.03). There was no statistically significant difference between the two groups in terms of LMR.
Conclusion: For lung nodules with unknown histopathological diagnosis, NLR values lower than 1.69 in preoperative complete blood count suggest primary lung cancer, and values above 2.92 suggest metastasis from other organs to the lung.
UJI PARAMETER SPESIFIK KOMBINASI SINERGIS KULIT BATANG KAYU JAWA (Lannea coromandelica) DAN RIMPANG JAHE EMPRIT (Zingiber officinale var. Rubrum) SEBAGAI PENGEMBANGAN BAHAN BAKU OBAT TRADISIONAL
Authors: Jefri Muhamad , Ratna Ratna , Nasrudin Nasrudin
Published: February 2022

Penelitian ini bertujuan untuk mengetahui parameter spesifik pada kombinasi kulit batang kayu (Lannea coromandelica) jawa dan rimpang jahe emprit (Zingiber officinale var. Rubrum). Penetapan parameter spesifik menggunakan uji hedonik yaitu pada organoleptik. Hasil organoleptik aroma nilai tertinggi adalah sampel RJE, hasil uji kesukaan terhadap rasa yang nilai tertinggi adalah sampel KBKJ & RJE (1:2) dan hasil uji kesukaan terhadap warna nilai tertinggi adalah sampel KBKJ.
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK (LKPD) BERBASIS DISCOVERY LEARNING MATERI LARUTAN ELEKTROLIT DAN NON ELEKTROLIT KELAS X MIPA SMA NEGERI 1 SAMATURU
Authors: Hasriani Hasriani , Maysara Maysara
Published: February 2022

ABSTRAK Telah dilakukan penelitian Pengembangan Lembar Kerja Peserta Didik Berbasis Discovery Learning Materi Larutan Elektrolit dan Non Elektrolit  Media  Penelitian ini bertujuan untuk mengetahui  kualitas Lembar Kerja Peserta Didikberbasis discovery learning materi larutan elektrolit dan non elektrolit dan respon siswa terhadap produk Lembar Kerja Peserta Didik berbasis discovery learning materi larutan elektrolit dan non elektrolit yang dikembangkan. Metode penelitian yang digunakan adalah (Research and Development) dan Model pengembangan yang digunakan adalah model pengembangan 4D (define, design, development and disseminate.Hasil penelitian menunjukkan bahwa rata-rata penilaian validator dari aspek kelayakan isi, bahasa dan penyajian memiliki persentasi sebesar 91.5%  (Sangat baik) sedangakan hasil analisis repon siswa memiliki persentasi sebesar 91,46% (sangat baik). Dari hasil penelitian ini dapat disipulkan baahwa  Lembar Kerja Peserta Didik Berbasis Discovery LearningMateri Larutan Elektrolit dan Non Elektrolit yang di kemabangkan memiliki kualitas yang sangat baik.i
ANALISIS KEMAMPUAN BERPIKIR KRITIS DALAM MENYELESAIKAN MASALAH MATEMATIKA DITINJAU DARI GENDER PADA SISWA KELAS VII SMP NEGERI 16 POLEANG TENGAH
Authors: Nurmiati Nurmiati , Jufri Jufri
Published: February 2022

Penelitian ini bertujuan untuk mengetahui perbedaan kemampuan berpikir kritis dalam menyelesaikan masalah matematika pada siswa kelas VII SMP Negeri 16 Poleang Tengah ditinjau dari gender. Penelitian ini dilaksanakan di SMP Negeri  16 Poleang Tengah tahun ajaran 2019/2020. Jenis penelitian ini adalah penelitian deskriptif dengan perolehan data menggunakan data kuantitatif dan data kualitatif. Subjek penelitian ini terdiri dari 2 kelas dengan jumlah siswa 40 orang. Teknik analisis data menggunakan analisis deskriptif dan kualitatif yaitu kondensasi data, penyajian data dan penarikan kesimpulan. Hasil penelitian ini adalah siswa laki-laki dengan kemampuan berpikir kritis dalam menyelesaikan masalah matematika diperoleh nilai rata-rata adalah 46,25 sedangkan siswa perempan diperoleh nilai rata-rata sebesar 40,25. Hal ini menunjukkan kemampuan berpikir kritis siswa laki-laki menyelesaikan soal lebih baik dari siswa perempuan. Sedangkan hasil wawancara siswa laki-laki cenderung lebih aktif dalam mengeksplorasi pemahaman yang dimililikinya. Sedangkan siswa perempuan, lebih mengutamakan bagaimana soal terjawab dengan cepat tanpa mengeksplorasi pemahaman yang dimilikinya.
Teacher professional learning in Scotland during (and after) the COVID-19 pandemic: A story of hope and humanity?
Authors: Kennedy Aileen
Published: February 2022

Abstract
The COVID-19 pandemic changed teachers’ personal and professional lives almost overnight as we all moved our lives online to be at a safe social distance from each other. In some ways this has been a leveller in that almost nobody has escaped the influence of the pandemic, but COVID-related mitigations in teacher professional learning have undoubtedly made issues of access and equity better for some and more challenging for others. This article explores how these changes to teacher professional learning in Scotland have both advantaged and disadvantaged particular teachers in particular contexts. It then goes on to illuminate how elements of the pre-pandemic dominant discourse in teacher professional learning have been both maintained and disrupted. The article concludes by articulating a series of lessons learned: things to be kept, nurtured, and developed; things to be avoided or to be wary of; and excitingly, things that might be possible in the future as a result of this experience.

Keywords: teacher professional learning; COVID-19; Scotland; professional standards; discourse; rural
Modeling and simulation of suction-driven flow and heat transfer with temperature-dependent thermal conductivity in a porous channel
Authors:   Applied Mechanics Laboratory, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon, Nsoga V. N. , Hona J.
Published: February 2022

In this paper, the heat transfer equation is coupled to the Navier-Stokes equations for a steady flow induced by uniform suction on two porous walls kept at different temperatures. The incompressibility of the fluid and the fact that the velocity field has two components lead to introduce the stream function in the governing equations. A similarity method is used in order to transform the resulting set of partial differential equations satisfied by the stream function and temperature into two ordinary differential equations for the same problem. The analysis is focused on the description of the behaviors of the normal and axial velocities, the streamlines, and temperature through multiple solution branches under different values of the main control parameters of the problem which are the Reynolds number, the Péclet number and the sensitivity of the thermal conductivity to the variations of temperature.
Radiographic Prescription Practices Among Implant Practitioners In India: A Cross-sectional Survey
Authors: Mahule Aushili
Published: February 2022

Aim: To identify the contemporary radiographic prescription practices among the dental implant practitioners in India.

Materials and method: Two clinicians interviewed four hundred dentists using a 13-question questionnaire for commonly prescribed imaging modality options for implant treatment planning and assessment. The parameters included commonly available imaging techniques, exposure of radiation to the patient, coverage area of teeth and surrounding facial bones, ease of availability and the cost effectiveness. The interview was conducted by two operators to eliminate subject bias. CbctThe data collected was analyzed using Statistical Package for the Social Science (SPSS version 22, Armonk, NY: IBM Corp).

Results: Cone beam computed tomography (CBCT) was found to be the most prescribed imaging modality prescribed by 44.2% of the dentists followed by orthopantograph (OPG) (17.9%). A combination of imaging modalities was preferred by 21.9% of dentists. The intraoral periapical radiographs (IOPA) were prescribed by 12.3% while conventional tomography was prescribed by 2.5% of the dentists. Precision of the imaging modality (51.2) reduced exposure to radiation (19.8) and ease of availability (13%) were the reasons for selection of radiograph prescription.

Conclusion: According to the study, cone beam computerized tomography (CBCT) appeared as the most prescribed imaging modality followed by OPG. Precise measurements were cited as the main reason for selecting a radiographic technique followed by the less exposure of the patient to radiation and easy availability of the modality.
UTILISING FIELD THEORY TO EXAMINE MEGA-EVENT LED DEVELOPMENT
Authors: Duignan Michael B.
Published: February 2022

Scholars and practitioners have long been analysing and evaluating the way events, particularly mega-events, serve as a mechanism of change. Powerful descriptions are typically brought to life via event impact and legacy case studies: yet, I argue such work can remain a-theoretical – or – conceptually disorganised. I draw on Bourdieu’s field theory and the management study of Field Configuring Events to develop a new analytical framework: the ‘Cognitive and Relational Mapping of Field Configuring Events’ – augmenting and offering a set of concepts to strengthen analysis and conceptual consistency between studies, whilst affording latitude to overlay different disciplinary perspectives. I detail methodological and conceptual advantages afforded alongside six ways the framework could be applied-and-extended across various cases and contexts.
Pengaruh Pendidikan Kesehatan Terhadap Peningkatan Pengetahuan Deteksi Dini Kanker Payudara Di Pondok Pesantren Rodhotul Jannah
Authors: Kusuma Ratna , Sakitri Ganik
Published: February 2022

ABSTRAK

SADARI adalah salah satu cara mudah untuk melakukan deteksi dini kanker payudara pada wanita setelah menstruasi dengan melakukan pemeriksaan payudara sendiri. Pemeriksaan payudara sendiri dapat meningkatkan kesadaran akan pentingnya kewaspadaan adanya benjolan yang tidak normal pada payudara. Penelitian ini bertujuan untuk mengetahui pengaruh pendidikan kesehatan terhadap peningkatan pengetahuan deteksi dini kanker payudara di Pondok Pesantren Rodhotul Jannah. Metode penelitian menggunakan pre eksperimental dengan one group prepost test design. Responden berjumlah 15 santriwati menggunakan teknik total sampling. Responden diukur dengan menggunakan kuisioner pengetahuan, selanjutnya diberikan penyuluhan kemudian responden diukur lagi menggunakan kuisioner pengetahuan yang sama. Hasil analisis data menggunakan uji statistik Wilcoxon Signed Ranks Test (α=0,05) didapatkan nilai probabilitas = 0,000. Hal ini menunjukan nilai p < nilai α. Dari hasil penelitian diatas dapat disimpulkan bahwa ada pengaruh pendidikan kesehatan terhadap peningkatan pengetahuan tentang deteksi dini kanker payudara di Pondok Pesantren Rodhotul Jannah.

Kata Kunci       : pendidikan kesehatan, pengetahuan, SADARI

 

ABSTRACT

 SADARI is an easy way to do early detection of breast cancer in women after menstruation by doing breast self-examination. Breast self-examination can increase awareness of the importance of being aware of an abnormal lump in the breast. This study aims to determine the effect of health education on increasing knowledge of early detection of breast cancer at the Pondok Pesantren Rodhotul Jannah. The research method used pre-experimental with one group pre-posttest design. Respondents amounted to 15 santriwati using total sampling technique. Respondents were measured using a knowledge questionnaire, then given counseling and then respondents were measured again using the same knowledge questionnaire. The results of data analysis using the Wilcoxon Signed Ranks Test statistical test (α = 0.05) obtained a probability value = 0.000. This shows the value of p < value of. From the results of the research above, it can be concluded that there is an effect of health education on increasing knowledge about early detection of breast cancer at the Pondok Pesantren Rodhotul Jannah.

Keywords        : heallth education, knowledge, SADARI
Ficha para atender especificidades socio-demográficas del estudiante adulto de cursos en línea
Authors: Cordero Hidalgo Aleska María
Published: February 2022

Se presentan algunas ideas en torno a las consideraciones que debe tener en cuenta el facilitador/asesor en una fase específica de la comunicación con el estudiante adulto de la EAD, en el marco de los modelos de la distancia transaccional desarrollados por Moore y otros. Se propone brindar atención especial a la calidad de los protocolos en el proceso de retroalimentación y una ficha-guía que incluya las dimensiones resaltantes del perfil particular de cada estudiante. Lo anterior de acuerdo con las alternativas de estrategias comunicacionales que ofrece el sistema instruccional para que éstas se ajusten a las demandas y características personalizadas del participante.
Vitamin D Levels in Residents of Arkhangelsk During Different Seasons of the Year
Authors:   Northern State Medical University, Kostrova Galina N. , Malyavskaya Svetlana I. , Lebedev Andrey V.
Published: February 2022

Living in high latitudes is a risk factor for developing vitamin D deficiency. Literature data indicate that in the northern regions vitamin D cannot be synthesized in the skin for most of the year. It seems relevant to study vitamin D levels in the population of the Arctic zone of the Russian Federation during different seasons of the year, which was the purpose of our research. Materials and methods. We assessed 25(OH)D levels in 913 residents of the city of Arkhangelsk (64°N) in the course of three seasons: winter, spring, and autumn. The study included 191 children aged 7–8 years, of which 107 boys and 84 girls; 403 adolescents aged 13–17 years, of which 167 boys and 236 girls; 260 young people aged 18–22 years, of which 58 men and 202 women; 59 adults aged 24–65 years, of which 12 men and 47 women. Results. We revealed low vitamin D levels in residents of arkhangelsk qualifying as deficient throughout all three seasons. The median concentration of 25(OH)D was 16.3 (12.0–21.8) ng/ml in winter,16.9 (12.8–22.9) ng/ml in spring, and 15.8 (11.4–20.2) ng/ml in autumn. The proportion of subjects with a normal level of 25(OH)D wаs less than 1 % in winter, 8 % in spring, and 2 % in autumn. We revealed no dependence of 25(OH)D concentration on the average daylight duration or significant differences in 25(OH)D levels in different seasons of the year. Presumably, these results can be explained by the low amount of daylight hours spent outdoors by the subjects during the three seasons of the year. Further research is required on the contribution of various factors affecting 25(OH)D levels: length of time spent outdoors, level of physical activity, contribution of dietary sources of vitamin D.
Raman Geobarometry of Quartz Inclusions in Kyanite: Application to Quartz Eclogite from the Gongen Area of the Sanbagawa Belt, Southwest Japan
Authors: Tomioka Yuki , Kouketsu Yui , Taguchi Tomoki
Published: February 2022

Residual pressure values of quartz inclusions in host kyanite were estimated using Raman spectroscopy and show that the quartz-inclusions-in-kyanite system can be used as a geobarometer for estimating peak metamorphic conditions. Samples of quartz eclogite, a pelitic high-pressure metamorphic rock composed mainly of garnet, omphacite, and quartz, with subordinate kyanite, were obtained for analysis from the Gongen area in the Sanbagawa metamorphic belt, southwest Japan. Residual pressure in the 236 analyzed quartz inclusions within kyanite grains varies from 0.12 to 0.76 GPa. Values are independent of inclusion size and inclusion aspect ratio, and the distribution of residual pressure within the inclusions is homogeneous, except at inclusion-host interfaces. Numerical calculations based on elastic modeling with the equations of state of quartz and kyanite were applied using the highest residual pressure value of 0.76 GPa, with the calculated isopleth being consistent with previous results obtained by conventional thermodynamic geothermobarometry. We conclude that the quartz-inclusions-in-kyanite system can be used as a reliable new Raman geobarometer.
Composition of Diamond from the 95-2 Pipe, Lake Timiskaming Kimberlite Cluster, Superior Craton, Canada
Authors: van Rythoven Adrian D. , Schulze Daniel J. , Stern Richard A. , Lai Mei Yan
Published: February 2022

Forty-one samples of diamond from the Jurassic 95-2 kimberlite pipe in the Lake Timiskaming Kimberlite Cluster, Superior Craton, Canada, were imaged using cathodoluminescence and analyzed by secondary ion mass spectrometry and Fourier-transform infrared absorbance spectrometry to determine carbon stable isotope composition, total nitrogen abundance, and nitrogen aggregation state.

The carbon isotope compositions results (δ13CVPDB) range from –9.11 to –3.57‰, with a mean value of –5.8‰. Intra-stone variation is small (maximum ∼2.2‰, and in most individual diamond samples <1‰). Nitrogen contents range from 0.5 to 2040 ppm (mean of 483 ppm). The greatest range of values in a single stone is 825 ppm. The samples are poorly aggregated in terms of nitrogen. The samples are mostly type IaA or IaAB, with a few bordering on type Ib.

Diamond growth was episodic, with nitrogen behaving highly compatibly (i.e., D = [N]diamond/[N]fluid >> 1). Precipitation was likely from a carbonate-rich fluid in a peridotitic (lherzolitic) environment within the mantle of the central Superior Craton. This generation of diamond growth is very similar to those reported from the Jurassic age Victor and U2 pipes of the Attawapiskat Kimberlite Cluster, and distinct from a possibly much older (>1.1 Ga) generation of diamond reported in other older host rocks (T1, Wawa, Lynx, and Renard). This older generation of diamond at these other localities is also predominantly of the peridotitic (harzburgitic) paragenesis but contains far less nitrogen (although typically more aggregated as B centers) and has higher δ13CVPDB.

The younger generation of diamond formed after mantle heating during formation of the Mid-Continental Rift (ca. 1.1 Ga) destroyed any proximal prior generation(s) of diamond. Igneous activity after 1.1 Ga subsequently refertilized the cratonic mantle to a lherzolitic paragenesis in which the younger generation precipitated.
The redefinition of gunterite, Na4Ca[V10O28]·20H2O
Authors: Kampf Anthony R. , Cooper Mark A. , Hawthorne Frank C. , Hughes John M. , Nash Barbara P. , Adams Paul M.
Published: February 2022

Gunterite was originally assigned the ideal formula Na4[H2V10O28]·22H2O. More detailed bond-valence analysis brought into question the presence of a protonated decavanadate anion, which led to the reexamination of the mineral. Infrared spectroscopy confirmed the absence of NH4. Reinterpretation of the original crystal structure data and new electron-probe microanalyses support the redefinition of gunterite as having the ideal formula Na4Ca[V10O28]·20H2O. This redefinition has been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association.
On Lorentz Spengler and a neotype for the foraminifer Calcarina spengleri
Authors: Hansen Hans Jørgen
Published: February 2022

In 1781, Lorentz Spengler, curator of the Royal Collection of Art, Crafts and Rarities of Nature, Den­mark (1771-1807), described several foraminifera from sand obtained from the interior of large gas­tropods. On sectioning these minute foraminiferal tests he observed that they had no siphuncle (thus predating d'Orbigny's well-known observation of 1826) and that the septa curved in the opposite direc- tion to those of Nautilus "and the Ammon's Hom". One of Spengler's species was named Calcarina stellata by de Ferussac in 1827. This is a valid senior subjetive synonym of Pararotalia ea/car (d'Orbigny, 1839), and an application has therefore been made to the International Commission on Zoological Nomanclature for its suppression.
The type species of the genus Calcarina was described and illustrated by Spengler (1781) and named Nautilus spengleri by Gmelin (1791). The type was described from sand contained in an east Indian gastropod. The gastropod has been located in the Zoological Museum, Copenhagen. It still contained some sediment, from which a neotype has been selected.
LANGUAGE REPRESENTATION OF THE TIME CONCEPT IN ENGLISH ORAL NARRATIVE DISCOURSE
Authors: BIGUNOVA Natalia , DOMBROVSKA Sophiia
Published: February 2022

This study addresses two interrelated issues: first, the status of narratology, and second, the role of language means in manifestation of the time concept in oral narrative discourse. The article focuses on the semantic, morphological and syntactic means realizing the time concept in English oral narrative discourse. The authors offer their own classification of temporal meanings characteristic of oral narrative discourse. The classification includes the following temporal meanings: succession, priority, simultaneity, frequency / oneness, duration and time localization. The proportion of the defined temporal meanings in the investigated narrative discourses has been quantified as well, proving that the biggest layer of temporally coloured language items is formed by the temporal meaning of succession, while the rest of the meanings form approximately equal layers. The main part of the study presents and analyses language manifestation of each of the singled out temporal meanings in the oral narrative discourse. The study has also revealed a number of language units that can express a few temporal connotations and thus are included into the language bulks representing different temporal meanings. The authors come to affirming the complex nature of a linguistic signal and provide a detailed description how exactly a temporal meaning is signalled at each language level in oral narrative discourse.
TEACHING BULGARIAN AS A FOREIGN LANGUAGE FROM A MORPHOSYNTACTIC PERSPECTIVE: VALENCY AND RECTION OF THE BULGARIAN VERBS
Authors: HADZHIEVA Krasimira
Published: February 2022

Despite the skepticism of a number of linguists towards the valency theory it should take an important place in foreign language teaching. Valency theory is closely related to the phenomenon of verb rection. The valency of a verb refers to its ability to control the number and type of the arguments that can appear in its environment. Valency is a syntactic (and a semantic) notion. The rection of a verb refers to its ability to determine the morphological form of the words that appear in its environment. Since the verb is in control of the declension of the neighbouring words (nouns, adjectives, pronouns, etc.), that is to say, it requires a word to be modified to express different grammatical categories such as number, case, definiteness, etc., rection could be considered a morphological notion. Due to the interface between this two phenomena, in other words, due to the interaction between syntactic and morphological features of the words a morphosyntactic approach is applicable in foreign language teaching, and in particular in teaching Bulgarian as a foreign language. Valency and rection are among the major sources of grammatical errors in foreign language learning. Consequently, a good approach for learners of Bulgarian is to learn new verbs simultaneously with their valency and rection.
CARMEN PERPETUUM: CHAOS AND METAMORPHOSIS
Authors: SPASSOVA Kamelia , VIDINSKY Vassil , KALINOVA Maria
Published: February 2022

Ovid's poem "Metamorphoses" forms its own literary and philosophical concept of metamorphosis, in which every collapse of forms is only a step in the process of their transformation. The most important aspect is that chaos is twofold: it is both material disorganization and an immanent force. The article points out that not only the primal state is chaotic, but chaos is present in the catastrophe of all forms, it is in the absence of a slit or a gap, which pushes matter to mix and confuses itself incessantly. The gap between the separated moments (narrative, motifs, or figurative interruptions) can be fulfilled in two ways. The first is merely receptive and universal (the role of the reader); the second one is metapoetic. It is in the meta-level of the creation of the concrete work itself – the self-reflexive indication that "Metamorphosis" is an artificial fusion, which assembles heterogenic elements in one texture. And although Ovid introduces the story of the plastic transformation of new images, forms and bodies, the very force of change is chaotic – it creates new links and new forms. The episodes with the catastrophe of the bodies are a crystallization of the chaos in the order of forms. Dixere chaos: nothing dies, it just mingles or blends and so it can't end for good.
TWO PATHS TO BUILDING THE MODERN BULGARIAN NATIONAL MYTHOLOGY: “HADZHI DIMITAR” BY HRISTO BOTEV AND “THE NEW GRAVEYARD ABOVE SLIVNITSA” BY IVAN VAZOV
Authors: RIKEV Kamen
Published: February 2022

The paper contains a contrastive analysis of two poems: Hristo Botev’s “Hadzhi Dimitar” (1873) and Ivan Vazov’s “The New Graveyard Above Slivnitsa” (1886). Throughout the 20th century both texts were regarded as highly representative of Bulgarian literature with strong influence on the modern national mythology. Their common theme (the death and glorification of national heroes), however, has not provoked intertextual analyses to date. The research leads to the conclusion that while Botev builds his symbolic system on the basis of Bulgarian folklore, Vazov relies on military metaphors and Christian notions, such as the righteous death, the Second Coming and eternity. This pattern, consistent with other works by the two authors, allows to comment on a literary confrontation that shares some similarities with Western European disputes between defenders of classicism and romanticism. In the case of Bulgarian literary history, Botev can be interpreted as the initiator of a long-lasting tradition of romantic glorification through transformation and integration of the folkloristic heritage (mainly the folk song), while Vazov’s classicist concepts had far fewer adherents. In the light of the conducted contrastive analysis the popular thesis, defended by Milena Tsaneva, about Botev and Vazov’s collaboration and continuity in creating the national poetic pantheon demands verification through the questions of confronting ideological and symbolic strategies towards revealing the uniqueness of modern Bulgarian identity.
THE MOTIF OF DUALITY IN SVETOSLAV MINKOV’S STORIES
Authors: MUSIY Valentina
Published: February 2022

This paper is dedicated to the investigation of the reasons for the double appearing in Svetoslav Minkov’s stories, the archetype roots of the duality motif in these works, the variants of duality and the connection of this motif with Minkov’s conception of the human. Three groups of stories in which the motif of duality has a constructive function are marked in the paper: bifurcation of the hero, when a part of his nature separates and starts its own existence; appearance of artificially made human likeness; representation of doubles by objects. Attention is paid mainly to the stories in which human beings and plants (or objects, things, etc.) are constantly replacing each other. Such stories are: “Blue Chrysanthemum”, “Asphalt” and “The Story of One Begonia”. The investigation of the story “Blue Chrysanthemum” is accompanied by parallels with the works of Nikolai Gogol (“Portrait”) and Alexander Grin (“Mysterious Disc” and “Grey Automobile”), in which the thing gains power over man, as well as with Karel Chapek’s story, which emphasizes the uniqueness of the blue chrysanthemum. Psychological and mystical motivations of what happened to the hero of the story “Blue Chrysanthemum” (fear as a cause of hallucinations or the mythological motif of the subject, which becomes the twin of its owner and avenges instead of him) are offered. In the stories “Asphalt” and “Story of One Begonia” the identification of heroes and objects (things) has another sense: it emphasizes the abnormality of the emptiness of life of the heroes.
The author of the article applied to the study of Minkov's stories a motive analysis, hermeneutic strategies, as well as a typological method.
FANTASY AND REALITY IN THE NOVEL "ZHARI IN AFRICA" BY EMIL KORALOV
Authors: STOYANOVA Tanya
Published: February 2022

The deals with the novel “Zhari in Africa” by Emil Koralov, published in 1942. The author of the paper focuses on the fantastic in the novel – the mechanisms that realize it, the relations between fantasy and realism. She pays attention to the adventure, the education, the cult of the science and the Utopia in view of the fact that this novel was created for children.
Fantasy is a relatively young genre in contemporary Bulgarian literature. It was created under the influence of the translated literature and its beginning can be traced in diabolism. Between World War I and World War II far more fantastic books for children were published than for the adults. Such books were written by Emil Koralov, Elin Pelin, Nikolay Fol, etc. The accent is on adventure, travels in unknown lands and seas, and new technologies. The authors use some motifs from folklore and mythology.
Emil Koralov was one of the first authors who wrote science fiction in the field of children’s literature and he was actually the most prolific writer between the World War I and the World War II. He wrote more than twenty novels for two decades. These novels were published in sequential instalments on the pages of the literary newspaper for children and teenagers “The Jolly Company”. Then these novels were exceptionally popular.
RESEARCH ON HISTORICAL PHRASEOLOGY IN UKRAINIAN LINGUISTICS (50s of the XX century – 20s of the XXI century)
Authors: DENYSIUK Vasyl
Published: February 2022

The article attempts to analyze the state of studying the formation of the phraseological fund of the Ukrainian language in domestic linguistics. The analysis showed that the traditional approach in Ukrainian studies is to fix the phraseology, clarify its semantics and unite them in groups according to the semantic criterion. In a few studies, the stylistic functions of phraseological units are presented and their comparative analysis in related languages is performed. It was found that the research was performed on the basis of materials of business style written documents of the XIV–XVII centuries, while written documents of other styles serve as a source base much less often or were left out of consideration. The same applies to the time period where the Kyiv Rus’ period is presented in only one study. The analysis of works on historical phraseology showed that in Ukrainian linguistics this trend has not been studied yet. The number of written memorabilia available for research is increasing, while several linguists are currently working on their phraseological system. The traditional method of interpreting phraseology is undergoing transformation: instead of studying phraseology within one style, one can observe its processing through discourse analysis and cross-stylistic parallels, which allows to record metaphorical shifts and determine in which style or genre the phraseologized meaning developed.