bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessing the Curve of Spee in Permanent Dentition in Class I, II, III Malocclusions and its Relation with Overjet and Overbite
Authors: Razavi Negin , Nili Monireh , Feizbakhsh Masoud , Afrooz Bahador
Published: July 2022

Introduction: The curve of spee is very important in complete oral reconstructions and can be used as a reference for prosthetic and orthodontic reconstructions. This study assessed the curve of spee in the maxilla and mandible and its relationship with the overjet and overbite in class I, II, and III malocclusions in Iranian population. In this descriptive cross- sectional study, 75 pairs of dental casts with permanent dental system and having second molars, available in the clinic of Khorasgan Azad University and private orthodontic offices were selected and divided into three groups of 25 based on malocclusion I, II, and III.
Materials & Methods: In this descriptive cross- sectional study, 75 pairs of dental casts with permanent dental system and having second molars, available in the clinic of Khorasgan Azad University and private orthodontic offices were selected and divided into three groups of 25 based on malocclusion I, II and III. The radius and depth of curve of spee were obtained. Radius of the curve of spee, the tip of canine cusps, the mesiobuccal of the first molars, and the distobuccal cusps of the second molars were joined together in the form of an arch. To measure the depth of curve of spee, the reference plan was drawn from buccal canine cusp to distobuccal cusp of the second molars. The perpendicular lines were drawn from this line to the edge of the premolars cusp, the first molar and the second molar mesiobuccal cusp and the deepest part was regarded for the measurements. Overjet was measured as an average of 6 upper anterior teeth and overbite as an average of 4 anterior lower teeth and the values of radius and depth of horseshoe curvature and overbite and overjet values were analyzed by One-way ANOVA and Tukey test and Correlation between data was also examined by Pearson correlation coefficient test (p value = 0.05).
Results: In class II malocclusion, overbite values had a significant relationship with radius (p value = 0.02) and depth of the curve of spee (p value = 0.04), in class III malocclusion, overbite values had a significant relationship with the curve of spee (p value = 0.001) had. In class II malocclusion, the curve of spee was deeper and overbite values were higher, and also in the class III malocclusions, a direct relationship existed between the curve of spee and overbite
Conclusion: Curve of spee effects the values of overjet and overbite, and the presence of increased overbite results from a deep spee curvature.
Use of CO2 Laser in Treatment of Oral Irritation Fibroma Adjacent to Implant: A Case Report
Authors: Davari Abdolrahim , Ziaei Farzad
Published: July 2022

Introduction: Nowadays laser can be used in many dental procedures. Some of the advantages of laser surgery in oral soft tissue lesions treatment are: reduced need to use local anesthesia, minimal bleeding, faster healing and reduced risk of post-operative complications. Due to above reasons laser was used for treatment of this irritation fibroma case.
Case Report: In this case report an irritation fibroma lesion in a 54 year old female was removed by CO2 laser surgery and the rate and quality of healing and patient's relief levels have been evaluated.
Standalone android app for Visually Impaired people
Authors: Suman Shubham , Das Chandramouli , Dubey Om Prakash
Published: July 2022

Purpose of the study: In the race for performance improvements and extensive features that make lives easier, usability and reach-ability of the technology have taken a backseat. This is especially so for an abled section of our society. Here the researchers have formulated an android app for visually impaired ones.

Methodology: The goal of the research is to develop and verify the efficiency of an android application at helping the visually impaired to connect to the mainstream by providing an alternative method to perform general operations on an android device such as making calls, sending and reading text messages, and saving reminders or notes independently

Main Findings: The major problems faced by the visually impaired ones are is texting, calling, note-making whereas with the help of this application everything becomes very easy to operate.

Applications of this study: Study of this application suggests us to deploy it at each and every visually special user so, that they can be benefitted with this.
Forming and Displaying Video Data in Onboard Enhanced Vision Multispectral Systems
Authors: Bondarenko M.A. , Bondarenko A.V. , Drynkin V.N. , Pavlov Yu.V.
Published: July 2022

The article considers the results of long-term research and real flight tests for developing a multichannel system for enhanced vision in difficult for aircraft crew visibility conditions. The multicomponent nature of the aggregate video signal generated by a multispectral video system is shown, justifying its representation in color and the need to develop a color indicator of the aircraft windshield to obtain a better quality of situational awareness for pilot compared to the capabilities of traditionally used monochrome indicators. A method for integrating monochrome images of multichannel enhanced vision system spectral channels into a color multicomponent image is proposed. For more natural perception of the resulting color images by the human eye, the spectrum of the spectral characteristics of the video channels is rearranged in the direction of decreasing wavelength. For the most common RGB color image format, the red component R of the display system records the image of the long-wave thermal range, the green component G records the image of the mid-wave infrared range, the blue component B records the image of the short-wave visible television range. The resulting pseudo-color image allows unambiguous restoring the original images. This proves the absence of information loss during image integration. Since there are no colored windscreen displays yet, a method for reproducing a pseudo-color image on a mono-chrome display is proposed. To convert a pseudo-color image to monochrome one, methods are used in which color contrasts are preserved in the form of tonal contrasts. The advantages of the proposed technology are demonstrated on real examples
Expanding Possible Landing Areas on the Surface of Venus by using Gravity Assist Maneuvers
Authors: Nazirov R.R. , Eismont N.A. , Zubko V.A. , Belyaev A.A. , Fedyaev K.S. , Zasova L.V. , Gorinov D.A. , Simonov A.V. , Koryanov V.V.
Published: July 2022

In the framework of the project "Venera-D" a problem of landing the descent module in a given area of the surface of Venus is considered. With the standard approach to selection of the launch window and with limitations on the value of the re-entry angle into the atmosphere, as well as on the maximum allowable overload for lander during descent, a significant part of the planet’s surface is inaccessible for landing. The simplest way to expand the landing area could be to increase the launch window by moderate reducing the payload mass. However, the potential for such an increase is significantly limited, primarily by the required characteristic velocity cost. In this study a new approach is proposed to ensure landing of the descent module at any point on the surface of Venus. The basis of the proposed approach is the use of the gravitational field of the planet to transfer the spacecraft to the heliocentric orbit, resonant at a ratio of 1:1 with the orbit of Venus, and the subsequent return to its original position in one Venusian year, when another part of the surface will be available for landing. In the presented paper it is shown that application of new approach allows to provide radical expansion of achievable landing areas, and also to provide access to any point on the surface of Venus due to increase of duration of flight and small increase of characteristic velocity costs
Pneumatic Damper Multicriteria Optimization in the Free-Piston Stirling Engine Displacer
Authors: Bobylev A.V. , Zenkin V.A.
Published: July 2022

The free-piston Stirling engine is a complex self-oscillating system, which parameters should be strictly coordinated with each other to ensure the unit operability. One of such coordination tasks is to ensure the balance of energy input to and output from the engine displacer. In this case, energy output depends on the dissipative forces, and energy output is provided by the displacer rod and depends on its diameter. The need to select rod diameter complicates and slows down the engine design. In addition, the system possible instability could lead to the engine racing. To solve this problem, it is proposed to install a pneumatic damper on the displacer rod ensuring the dissipative forces growth with an increase in the displacer amplitude above its nominal value. Thermodynamic model was created to evaluate the damper characteristics and select its parameters. MATLAB software package was used as the development environment. The system of differential equations was integrated using the Runge --- Kutta family method. The damper multicriteria optimization problem was formalized, and two objective functions with five independent parameters were compiled. Optimization was performed using the genetic algorithm, and the Pareto front was built. To evaluate results of the work performed, the damper mathematical model was integrated into the Stirling engine mathematical model, and the working process was calculated with selected damper parameters. It is demonstrated that the developed pneumatic damper prevents an increase in the displacer oscillation amplitude ensuring system stability and reducing time for the unit design
CPI Welcomes the Summer 2021 Special Issue “Multisensory Storytelling: Creating Different Forms of Knowing, Being and Living in our World” with Kathleen C. Sitter, invited Guest Editor
Authors: DePass Cecille , Abdi Ali A.
Published: July 2022

Editorial introducing the Volume 13, No. 1 issue of Cultural and Pedigogical Inquiry, Multisensory Stories with Guest Editor Kathleen Sitter.
CPI Special Issue: "Multisensory Stories: Celebrating Different Forms of Knowing, Being, and Living in our World" (Introduction)
Authors: Sitter Kathleen
Published: July 2022

Introduction to the Volume 13, No. 1  Summer 2021 Issue of CPI, Multisensory Stories by Guest Editor Kathleen C. Sitter.
Fractured Intimacies in (Re)membering
Authors: Ladhani Sheliza
Published: July 2022

Shelia Ladhani presents a series of stark black and white photgraphs in order to illustrate memory's elusive, changing nature.
Twins
Authors: Dabydeen Cyril
Published: July 2022

Based on a true incident, Cyril Dabydeen's poem explores two Euro-Canadian children's responses to race.
Disrupting Colonial Amnesia via Land-Based Sensory Fieldwork
Authors: Berkenkamp Geneve , Butterworth Surya , Derkat Noah , Godschild Chelsea , Grittner Alison L. , Yu Shane
Published: July 2022

The authors, Geneve Berkenkamp, Surya Butterworth, Noah Derkat, Chelsea Godschild, Alison L. Grittner and Shane Yu combine film, poetry and photography to disrupt settler amnesia narratives regarding colonization of Canada.
Moments of Home
Authors: Sitter Kathleen C.
Published: July 2022

Kathleen Sitter has created a short film exploring a parent and her children's lived experiences and responses to the early phases of Covid-19.
Re-Visioning Fragments of a Life in Jamaica
Authors: Campbell Carol
Published: July 2022

Carol Campbell with an example of cultural preservation in Jamaica, using photographs and an essay  to record the careful deconstruction of an old house to be re-constructed and preserved as a cultural museum.
Exploring Foodways as Embodied Knowledge and Multisensory Storytelling: A First Generation Canadian Making an Andhra Pradesh Thali
Authors: Rao Sandy
Published: July 2022

Sandy Rao graphically illustrates with audio, photography and narrative the ways in which food is central to understanding memory, history, culture, and notions of home.
Contributor Biographies
Authors: Sitter Kathleen C.
Published: July 2022

Complete biographies of contributing writers and artists to the CPI Special Issue: Multisensory Stories: Celebrating Different Forms of Knowing, Being, and Living in our World.
"Notes from My Desk"
Authors: Hickling-Hudson Anne
Published: July 2022

A summary of academic activities and projects produced by Dr. Anne Hickling-Hudson in recent years since retiring in 2013 from the Queensland University of Technology (QUT) in Australia. She continues as an adjunct Professor of Education in QUT’s Faculty of Creative Industries, Education and Social Justice.
Beauty and the Beast: Using creative expression to envision a just society amid post-truth politics, pandemic, and climate change
Authors: Bohac Clark Veronika
Published: July 2022

Call for Submissions for the Special Issue of Cultural and Pedagogical Inquiry (CPI), (Winter of 2022) entitled "Beauty and the Beast: Using creative expression to envision a just society amid post-truth politics, pandemic and climate change.
Post Humanism: A Desire for a New Humanity
Authors: Fairchild Nikki , Lee Carol , Sidebottom Kay
Published: July 2022

Revised Call for Submissions for the two part Special Issue entitled "Post Humanism: A Desire for a New Humanity" with Part I  to be published in Summer 2022 (Volume 14, No. 1) and Part II in Winter 2023 (Volume 14, No. 2).
All that Glitters is not Gold: Culturally responsive online assessment and pedagogy in uncertain times
Authors: Koh Kim , Ercikan Kadriye , Lock Jennifer , DePass Cecille
Published: July 2022

Call for submissions for the Summer, 2023 issue of Cultural and Pedigogical Inquiry entitled All that Glitters is not Gold: Culturally Responsive Online Assessment and Pedigogy in Uncertain Times.
The Remembered Children of Maui - Pan-Pacific Conversations and Solildarities
Authors: Romero Noah , Mutch Carol , Grant Wairehu
Published: July 2022

Call for submissions for the Summer 2024 (Volume 16 No. 1) issue of Cultural and Pedagogical Inquiry entitled The Remembered Children of Maui - Pan-Pacific Conversations and Solidarities, with guest co-editors Noah Romero, Carol Mutch and Wairehu Grant.
Os 10 anos da Rede Cariniana do IBICT
Authors: Márdero Arellano Miguel Angel , Santos Gildenir Carolino
Published: July 2022

Em julho deste ano, a Rede Brasileira de Serviços de Preservação Digital – Cariniana completa 10 anos de atuação e, para celebrar, haverá uma série de ações em comemoração à data. Em consonância com os princípios do Instituto Brasileiro de Informação em Ciência e Tecnologia (Ibict), sobretudo o de preservar a produção intelectual científica e tecnológica, a Cariniana surgiu da necessidade de se criar uma rede de serviços de preservação digital de documentos eletrônicos brasileiros, com o objetivo de garantir seu acesso contínuo a longo prazo.
Science Process Skills and Self-efficacy of Civil Engineering Students
Authors: Kamil Firmanilah , Aida Nur
Published: July 2022

Penelitian bertujuan untuk mengetahui hubungan antara keterampilan proses sains dan self efficacy mahasiswa Teknik Sipil pada mata kuliah Mekanika Tanah . Jenis penelitian adalah korelasi dengan melakukan observasi dan pemberian angket. Sampel penelitian terdiri dari 53 mahasiswa Jurusan Teknik Sipil. Instrument terdiri dari angket untuk mengukur self efficacy dan lembar observasi untuk mengukur keterampilan proses sains. Data hasil kedua tes dianalisis dengan korelasi pearson product moment. Hasil penelitian menunjukkan adanya korelasi positif antara keterampilan proses sains dan self efficacy mahasiswa.
PEMANFAATAN ABU SEKAM PADI DAN PLASTIK PET MENJADIPENGGANTI SEBAGIAN AGREGAT HALUS DALAM PEMBUATAN PAVING BLOCK
Authors: Suganda Wijaya  , Daryati  , Rosmawita Saleh
Published: July 2022

Penelitian ini bertujuan untuk memanfaatkan limbah abu sekam padi dan plastik PET dalam pembuatan paving block. Dikarenakan limbah plastik PET memiliki kelebihan tidak mudah untuk terurai dan tahan lama, sedangkan abu sekam padi memiliki kelebihan daya ikat yang baik, di mana limbah plastik PET tidak memiliki daya ikat untuk mengikat campuran lain, kemudian untuk menutupi kekurangan itu maka di kombinasikan abu sekam padi dengan plastik PET. Metode yang digunakan pada penelitian ini yaitu metode eksperimen pada paving block dengan mengganti sebagian agregat halus dengan agregat buatan dengan variasi 0%, 5%, 10% dan 15% terhadap berat agregat halus. Benda uji berukuran 210 mm x 105 mm x 60 mm. Jenis pengujian yang dilakukan adalah pengujian tampak dan ukuran, uji kuat tekan, uji ketahanan aus dan uji daya serap air. Hasil pengujian nilai kuat tekan untuk variasi 5%, 10% dan 15% berturut-turut adalah 20 MPa, 17,597 MPa, dan 15,927 MPa. Paving block dengan variasi 5% temasuk kedalam mutu B, sedangkan paving block dengan  variasi 10% & 15% tidak termasuk ke dalam mutu B melainkan kedalam mutu C.
INDIKATOR PENENTU PENERAPAN PROGRAM KESELAMATAN KERJA PADA PEKERJAAN STRUKTUR BETON BERTULANG
Authors: Septiandini Erna
Published: July 2022

Pelaksanaan pekerjaan struktur, khususnya pada pekerjaan struktur beton bertulang di proyek konstruksi gedung bertingkat tinggi, tentu memiliki potensi terhadap kecelakaan kerja yang dapat melukai pekerja hingga menyebabkan kematian, hilangnya jam kerja, dan menganggu kinerja kerja. Untuk mencegah terjadinya kecelakaan kerja tersebut, maka diperlukan penerapan program keselamatan kerja di proyek konstruksi khususnya pada pekerjaan struktur beton bertulang. Tujuan dari penelitian ini ialah untuk mengidentifikasi indikator penentu penerapan program keselamatan kerja di proyek konstruksi khususnya pada pekerjaan struktur beton bertulang. Dalam penelitian ini menggunakan metode studi literatur dengan mengumpulkan berbagai data dari hasil penelitian relevan terkait program keselamatan kerja. Hasil dari penelitian ini menunjukkan bahwa terdapat empat indikator sebagai penentu penerapan program keselamatan kerja pada pekerjaan struktur beton bertulang, yaitu alat pelindung diri, teknologi, rambu-rambu keselamatan kerja, dan perilaku pekerja selama berada di area kerja.
Magnetic Nanorings for Biomedical Applications
Authors: Rodrigues Fernando , Azzolini Volnistem Eduardo , Sanguino Dias Gustavo , Aparecido dos Santos Ivair , Cotica Luiz
Published: July 2022

In this work we investigate the characteristics and feasibility of a new class of magnetic particles that are optimized for possible biological applications as magnetic hyperthermia. These new nanostructures have the nanoring shape, being composed of iron oxides (magnetite or hematite). Such morphology gives the nanoparticles a peculiar magnetic behavior due to their magnetic vortex state. The iron oxide nanorings were obtained using hydrothermal synthesis. X-ray Diffraction confirmed the existence of the desired crystal structure and Scanning Electron Microscopy shows that the magnetite particles had nanometric dimensions with annular morphology (diameter ~250 nm). The nanorings also show intensified magnetic properties and a transition to a vortex state. This study showed that it is possible to obtain magnetic nanorings with properties that can be used in nanotechnological applications (mainly biotechnological ones aimed at the treatment and diagnosis of cancer), in large quantities in a simple synthesis route.
Image of Woman in Indonesian Folktales: Selected Stories from the Eastern Indonesian Region
Authors:   Department of Indonesian Language Education, University of Muhammadiyah Malang, Indonesia, Andalas Eggy Fajar ,   Department of Indonesian Language Education, University of Muhammadiyah Malang, Indonesia, Bhakti Aditya Dwi Putra ,   Department of Communication Science, Faculty of Social and Politic Science, University of Muhammadiyah Malang, Indonesia
Published: July 2022

In Indonesia, a folk tale is used as a medium of entertainment as well as a teaching tool for children. Parents read folktales to their children at night. Folktales are used in the text of Indonesian lessons at the elementary education level. However, Indonesian folktale is suspected of being gender-biased. Although there is research on this subject, there is still little research on Indonesian folktales originating from Eastern Indonesia. Previous research conducted is still focused on the western region of Indonesia, for example, Java and Sumatra Island. This study aims to understand how women are depicted in Eastern Indonesian folktales, especially to understand the objectification of female characters. Based on the results of our research, we argue that many female characters in Eastern Indonesian folktales are subject to objectification. The objectification of female figures is carried out in the form of women as objects of sexuality, women as a medium of exchange of power, and women being passive and working in the domestic sphere. This finding shows that the folktale of Eastern Indonesia cannot be separated from patriarchal ideology. These stories show that women in the imagination of the Indonesian people still occupy an inferior position compared to men. Furthermore, the female characters also experience objectification and inequality as in folktales from Western Indonesia. The patriarchal point of view in folktales has deep roots and spreads in Indonesia. Research proves that the ideology of folktale is not always in harmony with the ideal values ??that exist in society. It takes a critical attitude towards the selection of stories that will be conveyed to children
Art and Culture in the Diplomatic Ceremonial as the Basis of International Relations
Authors:   Department of Art Management and Technology Events, National Academy of Management of Culture and Arts, Kyiv, Ukraine, Zakharova Oksana
Published: July 2022

Currently, there is an increased interest in ceremonial culture. A ceremonial is a kind of cultural message from one social group of people to another. The basic idea of behaviour, the inner meaning of secular ceremonial is laid down in church rituals, and external forms of behaviour can be borrowed from the traditions of everyday secular life. Diplomacy as one of the spheres of applied politics is a very complex and responsible type of human activity, which has always had a pronounced ritual character. The conclusion of contracts and alliances took place according to a certain scenario plan, according to which the ceremonial action developed. During the preparation and holding of the ceremony, the exchange of diplomatic letters and embassies continued, solemn meetings were arranged for the honored guests, feasts, theatrical performances, games, and festivities were given in their honor. the purpose of the article is to conduct a comprehensive study of the communicative functions of diplomatic ceremonial in international communication based on the analysis and generalisation of new facts with the involvement of archival materials and other sources introduced into scientific circulation for the first time. In this study, art is considered for the first time from the point of view of the communicative factor of a diplomatic ceremony. A ceremonial is an event in the life of society that has a symbolic meaning. The norms of ceremonial reflect not only ideology but also the social psychology of society, without an adequate interpretation of which it is impossible to correctly understand the behavior of statesmen in specific situations related to their official status.
‘Illusionary Homelands’ and In-Between Identities: Liminal Existence of the ‘Indian (Non)-Diaspora’
Authors:   Assistant Professor of English, Jain (Deemed-to-be University), Bangalore, & Doctoral Research Scholar, Department of English, Lovely Professional University, Punjab, India, Mathew Raisun , Pandya Digvijay ,   Associate Professor, Department of English, Lovely Professional University, Punjab, India
Published: July 2022

The influence of colonialism and the emergence of globalisation have gradually induced a mixed culture that neither can be attached to the innateness of the traditionalist attributes of the home country nor the foreignness of the Western idiosyncrasies. Though not directly clipped into the identity of a diaspora in spatial existence, the residents in the country also experience an equal or more departure in the context of perpetuating the traditional culture through their lifestyle. There arises an in-between state of existence – neither traditional nor foreign. This research article explores how the residents in India possess alienation in their cultural identities concerning the hybrid forms of lifestyle followed regularly, qualifying to be termed based on the regularity of lifestyle as the ‘Indian non-diaspora’. The argument about the liminal existence of the residents in India, similar to the Indian Diaspora, is substantiated with the help of various secondary sources that describe the three factors selected for analysis. The research article would provide insights on the residents of the country from the perspective of the still-prevailing hegemonic influence of colonialism, the ongoing globalisation effects and the traditionally existing multiculturalism in the country.
Gay Subculture, AIDS, and Neo-Decadence: 1980s in Will Self’s Dorian: An Imitation (2002)
Authors:   Assistant Professor, Department of English. Malda College, Malda, West Bengal, India., Sil Jyotirmoy
Published: July 2022

Will Self’s Dorian: An Imitation (2002) provides a glimpse to the gay subculture of 1980s’ London and New York, and contextualizes the issues like AIDS epidemic and gay liberation movement. The shown attributes of the gay subculture including the queer fashion trends, drug consumptions, and unprotected gay sex even at the risk of HIV transmission parallel the hedonistic and counter-normative ‘decadent’ aspects of Oscar Wilde’s source–text, The Picture of Dorian Gray (1890). Cathode Narcissus, the video installation capturing the naked male beauty, makes Dorian the ‘dis-embodied’ model/emblem for gay pride in a digital era and marks the posthumanist shift in the new form of decadence or neo-decadence. This paper, with respect to Self’s Dorian: An Imitation, would engage to explore how the attributes of 1980s’ urban gay subculture and rapid transmission of HIV among gays come under the paradigm of neo-decadence in the fin de siècle (meaning, “end of the century”) of the twentieth century.
Decoding the imperial “grip” in J.G. Farrell’s The Singapore Grip
Authors:   Humanities & Applied Sciences Area, Indian Institute of Management Ranchi, India, Maurya Prashant , Kumar Nagendra ,   Dept. of Humanities & Social Sciences, Indian Institute of Technology Roorkee, India
Published: July 2022

The Singapore Grip (1978) is the third instalment of the Empire trilogy by Booker Prize-winning novelist James Gordon Farrell. It inscribes colonial Singapore’s socio-economic situation through the story of a British tycoon who is engaged in multi-commercial enterprises, mainly rubber business, in the colony of Singapore. The present paper examines the titular phrase “Singapore Grip” in the novel. It argues that Farrell explores many aspects of British colonialism in Singapore through this phrase. By decoding the multiple connotations of the phrase, through reading instances from the novel, the paper will foreground the social, political, and economic issues critical in understanding colonialism in colonial Singapore.
Relevance of Symbols in Paulo Coelho’s The Alchemist
Authors:   Research Scholar, Department of English and Cultural Studies, CHRIST (Deemed to be University), Bangalore, India, Sebastian Rajat
Published: July 2022

Brazilian author, Paulo Coelho is known for his tales that inspire readers to overcome conflicts and move toward the ‘ultimate truth’. The popularity of such inspirational writings (both fictional and non-fictional) in the new age has given rise to a new literature style. Coelho’s fiction, though inspirational, describes journeys that are physical and psychological at the same time. Symbols guide him in his journeys, forming a significant part of the novels. While these novels are said to appear inspirational for depressed souls with a profound philosophical and spiritual dilemma, the study of symbols found in these novels appears significant. This research aims to read closely the novel The Alchemist by Paulo Coelho and evaluate the symbols in it. The research shall attribute the commonly accepted meanings to the symbols and assess the impact of such ‘accepted’ meanings on the same novel through Peirce’s model of semiotic analysis.
Impact of Headache Frequency and Sleep on Migraine Patients During the COVID-19 Pandemic
Authors: Ma Mengmeng , Bao Jiajia , Fang Jinghuan , Li Changling , Li Yanbo , Ge Wenjing , Zhang Yang , Guo Jian , He Li
Published: July 2022

Background:

Coronavirus disease 2019 (COVID-19) has spread worldwide and poses a
great threat to global health. COVID-19 has also an unneglected effect on migraine patients. Migraine
attack frequency is one of the migraine characteristics, and its impact during COVID-19
needs further research. We aimed to evaluate whether migraine attack frequency during the
COVID-19 pandemic differed from pre-COVID-19 attack frequency and explore possible influencing
factors during the pandemic.

Method:

This prospective cohort study enrolled 187 migraine patients from the Department of
Neurology of West China Hospital from October 2019 to December 2019. After the inclusion and
exclusion criteria, a total of 157 patients were included. We collected demographic data, clinical
characteristics, and epidemiological contact information and followed up on March 2020. Then,
paired-samples T-tests, logistic regression and interaction tests were used to analyze the data.

Result:

We found that the migraine attack frequency was 2.47 ± 1.12 before and 3.54 ± 1.79 during
COVID-19 (P<0.0001). Then, we divided patients into two groups based on the difference in
migraine attack frequency between the COVID-19 and pre-COVID-19 periods and employed logistic
regression analysis. In the logistic regression analysis, divorced status (OR = 6.53, P = 0.0453),
good sleep pre-COVID-19 and poor sleep during COVID-19 (OR = 3.11, P = 0.0432) had independent
effects on migraine attack frequency during the COVID-19 pandemic. We found no interaction
in poor sleep during COVID-19 between various subgroups.

Conclusion:

We found that migraineurs’ headache attacks were more frequent during COVID-19
than pre-COVID-19 and that increased migraine attack frequency was independently related to divorced
status and poor sleep during COVID-19.
Family support for the mathematical learning of the students of the middle basic sublevel
Authors: Toala-Bailón Rosa María , Ávila-Rosales Francisca Margarita
Published: July 2022

Family support in learning mathematics in students who entered in 2021 has had difficulties, so this research will study the causes that caused it. The results of the research carried out through a survey of parents are shown, to investigate the responsibility of family support in the learning of sixth grade students with respect to the support provided by parents in mathematics. A classification of topics on the family support of the students was carried out in the theoretical framework, through the analysis of family support, the causes of the conceptual errors are disclosed to improve the mathematical learning of the students. The objective of this research was to determine the correlation that exists between the perception and the support provided by parents in the subject of mathematics in sixth grade students with respect to mathematical learning. The qualitative method was applied in addition to carrying out a descriptive investigation, in addition to the inductive and descriptive method. The result was that family support affects the concept of this and the need to analyze, improve and propose a teaching-learning model based on a change in which parents are involved in their children's learning at school was observed.
On Son’gok Yi Tal’s Farewell Poetry
Authors:   The Association of DaeDong-Hanmun, Jang Jinyoup
Published: July 2022

This research aims to probe the meanings of farewells and the characteristics of Son’gok Yi Tal’s farewell poetry, as well as the modes of expressions employed in verbalizing the subject matter.
Good byes appear often in Yi Tal‘s poetry because his poetic self within the work is a ’wanderer’ and a ‘vagabond’. Being unable to settle down and having to leave produces repeated farewells. His poetic self wanders due to warfare and poverty - which compounds the sadness of the good byes. Although this poetic self reflects the actual personal history of Yi Tal, neither the Japanese Invasion of Korea in 1592, nor the historical and social contexts of the poet - for instance, of him being a sŏ-ŏl, which impoverished him - are made apparent in the poetry. Rather, farewell is depicted as a yoke of destiny in which no human can free themselves from. His farewell poetry focuses on illustrating the human ‘sorrow’ itself which is sealed inside fate. The decision to select farewell as the subject matter in his works, including yuefu poetry(樂府詩), also comes from the idea that farewell is the most apt subject for a genuine depiction of human sentiment.
Next, modes of expressions in Yi Tal’s farewell poetry have been inspected in two aspects. The first aspect concerns the characteristics apparent in the use of imagery; in describing the scene - which gives rise to the sentiment of farewell - Yi Tal often employs images of descent and darkness, as well as images of aimless drifting. Another in this aspect is the effective use of acoustic imagery; the sounds that are largely associated with seasons - such as cry of a cuckoo, nightingale, fall cicada, cricket, or a frosty wind - ring through the poems, working to deepen the sentiments of farewell. Following this, characteristics pertaining to composition techniques are discussed. First, Yi Tal juxtaposes farewells with encounters to highlight its sorrowful nature. The joy of the meeting intensifies the sorrow of the parting - and a brief encounter during the war brings sadness rather than delight. The farewells of the past are reminded in a poem about an encounter, and short meetings are followed by long separations. This mode of expression effectively communicates the sorrow of a good bye as a yoke of destiny. Another is to articulate the farewell of tomorrow in the last two lines of the poem; this mode serves to show the restrained sorrow through visualization.
Yi Tal is an important poet who epitomizes a certain turn that took place in mid Chosŏn era - the turn towards admiration of the Tang poetry style. His works call for a more thorough inspection, especially since the number of the remaining works is scarce. And in doing so, ‘farewell’ is a topic that requires much deliberation because of the weight it carries in his works. Further discussion is warranted on whether Yi Tal’s farewell poetry shows any difference when compared to the farewell poetry of his peers, or the poets of later generations.
Исследование влияния оптического излучения на резистивное переключение МДП-структур на основе ZrO-=SUB=-2-=/SUB=-(Y) на подложках Si(001) с наноостровками Ge
Authors: Коряжкина M.Н. , Филатов Д.О. , Шенина М.Е. , Антонов И.Н. , Круглов А.В. , Ершов А.В. , Горшков А.П. , Денисов С.А. , Чалков В.Ю. , Шенгуров В.Г.
Published: July 2022

The effect of optical radiation in the visible and near-infrared bands on resistive switching of a MOS stack based on ZrO2(Y) film on an n-Si(001) substrate with self-assembled Ge nanoislands on its surface has been studied. An increase in the resistive switching logical gap was observed upon the photoexcitation, in particular, when the photon energies were smaller than the Si band gap. The effect was associated with the impact of the photovoltage at the Si/Ge/ZrO2(Y) interface. In the latter case, the effect is associated with spatially indirect interband optical transitions in Ge nanoislands.
Фотонное эхо в германии с мелкими донорами
Authors: Цыпленков В.В. , Шастин В.Н.
Published: July 2022

A theoretical study was made of the conditions for
observing the photon echo effect in a germanium crystal doped
with shallow donors. A numerical calculation of the medium
polarization excited by a sequence of two optical pulses at a
frequency close to the impurity transition frequency has been
made. The effect of excitation pulse parameters, such as
the pulse duration, the inhomogeneous broadening of impurity
transitions and the relaxation rate of population and coherence
in the system on the echo is considered. The key aspect in
the experimental implementation of the effect is the control of
the crystal temperature under photoexcitation, since the rate
of coherence relaxation in the system strongly depends on the
temperature of the crystal lattice.
Определение толщины зародышевого слоя AlN, сформированного на поверхности Al-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=-(0001) в процессе нитридизации, методами РФЭС и ИК-спектроскопии
Authors: Милахин Д.С. , Малин Т.В. , Мансуров В.Г. , Кожухов А.С. , Новикова Н.Н. , Яковлев В.А. , Журавлев К.С.
Published: July 2022

The effect of different degrees of the sapphire surface nitridation process completion on the AlN buffer layer morphology has been studied. It was found that ~85% completion of the AlN crystalline phase formation promotes the growth of a two dimensional AlN buffer layer with a smooth surface morphology, regardless of the substrate temperature and ammonia flux. In contrast, during the AlN nucleation layer formation as a result of weak or excessive sapphire nitridation, a polycrystalline or three-dimensional AlN structures with a high density of inversion domains, respectively, were formed. Using independent methods of X-ray photoelectron spectroscopy and infrared spectroscopy of surface polaritons, the thickness of the AlN nucleation layer was determined at ~85% degree of the nitridation process completion, which amounted to ~1 monolayer.
Поперечный термомагнитный эффект в двоякопериодических полупроводниковых сверхрешетках без центра инверсии
Authors: Перов А.А. , Пикунов П.В.
Published: July 2022

В одноэлектронном приближении во внешнем магнитном поле при наличии градиента температуры рассчитана поверхностная плотность тока носителей заряда в двумерных двоякопериодических полупроводниковых сверхрешетках n-типа. Магнитное поле предполагалось постоянным и однородным, приложенным перпендикулярно плоскости электронного газа. В результате совместного решения уравнения Шредингера и кинетического уравнения Больцмана показано, что зависимости поверхностной плотности поперечного тока от температуры и модуля градиента температуры имеют существенно нелинейный характер, присутствуют участки с отрицательной поперечной дифференциальной проводимостью. Зависимость времени релаксации от квазиимпульса электрона учтена в модели феноменологически через закон дисперсии носителей в магнитных подзонах. В отсутствие центра инверсии электростатического поля сверхрешетки законы дисперсии электрона в магнитных блоховских подзонах не являются четными функциями проекций квазиимпульса в магнитной зоне Бриллюэна. Как следствие, многократно возрастает величина поверхностной плотности поперечного термомагнитного тока по сравнению со случаем центросимметричного потенциала поля сверхрешетки. Ключевые слова: термомагнитный эффект, двумерные двоякопериодические полупроводниковые сверхрешетки.
Влияние дозы имплантации водорода на релаксацию электрофизических характеристик структур "кремний-на-изоляторе" после воздействия рентгеновского излучения
Authors: Абросимова Н.Д. , Юнин П.А. , Дроздов М.Н. , Оболенский С.В.
Published: July 2022

Experimental studies of the relaxation of electrophysical parameters of SOI structures with different doses of hydrogen implantation after exposure to stationary X-ray radiation are presented.Investigation of high-frequency CV characteristics and pseudo-MOS transistors made it possible to obtain information about the accumulated charge, the density of surface states, mobility of carriers. The impurity composition and depth profileof hydrogen concentration were determined by the SIMS method. Structural perfection of the layers and interfaces was evaluated using the XRR and XRD methods. A different nature of the relaxation dependence and the recovery time of the electrophysical parameters for SOI structures with different doses of hydrogen implantation are recorded. The values of mobility and charge density are higher for the structure with a lower hydrogen implantation dose.
Исследование влияния дозы ионно-лучевой обработки поверхности Si(111) на процессы роста нитевидных нанокристаллов GaAs
Authors: Шандыба Н.А. , Черненко Н.Е. , Балакирев С.В. , Еременко М.М. , Кириченко Д.В. , Солодовник М.С.
Published: July 2022

This paper presents the results of experimental studies of the effect of the Ga ion dose during ion-beam treatment of the Si(111) surface using the focused ion beam technique on the GaAs nanowires epitaxial growth processes. A significant difference is revealed between the parameters of nanowire arrays formed on modified and unmodified areas of the Si substrate in this way. It is shown that changing the Ga ions dose from 0.052 to 10.4 pC/μm^2 during ion-beam treatment makes it possible to form GaAs nanowires arrays with a different set of parameters in a single technological cycle with a high degree of localization. The regularities of the influence of the dose of Ga ions during surface modification on the key characteristics of GaAs nanowires (density, diameter, length, and orientation with respect to the substrate surface) are experimentally established.
Исследование влияния отжига и состава на инфракрасную фотолюминесценцию наногетероструктур GeSiSn/Si с множественными квантовыми ямами
Authors: Коляда Д.В. , Фирсов Д.Д. , Тимофеев В.А. , Машанов В.И. , Караборчев А.А. , Комков О.С.
Published: July 2022

The results of studying the photoluminescence of nanoheterostructures with multiple Ge1-x-ySixSny/Si quantum wells grown by molecular beam epitaxy on silicon substrates and annealed at different temperatures are presented. As a result of the annealing of the structures, a multifold increase in the intensity of the luminescence peak close in energy to the optical transitions within the multiple quantum wells is observed. The optimal annealing temperature and duration are determined in terms of the intensity of photoluminescence. The luminescent properties of a series of annealed Ge0.93-xSixSn0.07/Si structures with different Ge compositions are investigated. As a result, a shift of the low-temperature photoluminescence peak towards lower energies with an increase in the fraction of germanium in the alloy composition is shown. Thus, the possibility of controlling the luminescence spectrum of Ge0.93-xSixSn0.07/Si nanoheterostructures in the wavelength range of 1.3 −2.0 µm is demonstrated.
Радиационная стойкость источника субтерагерцового излучения после нейтронного воздействия
Authors: Иванов А.С. , Павельев Д.Г. , Оболенский С.В. , Оболенская Е.С.
Published: July 2022

The study of the radiation hardness of subterahertz radiation source from a Gunn diode oscillator and a multiplier, based on a semiconductor superlattice GaAs/AlAs was continued. The dependences of the output power on the frequency of a Gunn diode oscillator before and after neutron irradiation are experimentally measured. The dependence of the output power on the frequency of the source of subterahertz radiation to neutron radiation with fluences of 3.5·1012 cm-2, 2.85·1013 cm -2, 1014 cm -2 has been analytically estimated.
Степень поляризации комбинационного рассеяния света в нанокристаллах кремния
Authors: Иго А.В.
Published: July 2022

Исследовано комбинационное рассеяние света на массиве ориентированных нанокристаллов кремния. Измерялась угловая зависимость интенсивности поляризованных компонент комбинационного рассеяния света и определялся параметр степени поляризации рассеянного света. Обнаружено, что степень поляризации комбинационного рассеяния света связана с размером нанокристаллов в образцах. Массив нанокристаллов имеющих одинаковую кристаллографическую ориентацию получали термическим отжигом нарушенного ионной имплантацией монокристалла кремния. При термическом отжиге образца кристалличность слоя восстанавливается не одновременно во всем нарушенном объеме, а в виде нанокристаллов, разделенных аморфными промежутками, и образованные нанокристаллы имеют преимущественно кристаллографическую ориентацию исходного монокристалла. Особенности степени поляризации комбинационного рассеяния света в нанокристаллах связаны с квантово-механической неопределенностью величины волнового вектора фонона и неопределенностью направления фонона в ограниченном объеме нанокристалла. Получены соотношения, связывающие степень поляризации комбинационного рассеяния света с размером нанокристаллов. Обсуждается возможность определения размеров нанокристаллов по измерениям степени поляризации комбинационного рассеяния света как независимого метода. Ключевые слова: комбинационное рассеяние света, кремний, нанокристаллы, ионная имплантация, отжиг, аморфная фаза.
Исследование кристаллического состояния слоев молекулярно-лучевой эпитаксии гетероструктур (013)HgCdTe/CdTe/ZnTe/GaAs методом генерации второй гармоники
Authors: Дворецкий С.А. , Ступак М.Ф. , Михайлов Н.Н. , Макаров С.Н. , Елесин А.Г. , Верхогляд А.Г.
Published: July 2022

The crystal perfection of HgCdTe layers of heterostructures grown on (013)GaAs substrates with ZnTe and CdTe buffer layers and orientation rotation in the plane(angle φ) and perpendicular to the growth direction (angle θ) were studied by the method of second harmonic generation. A change in the angle φ for CdTe layers was observed depending on the orientationof the GaAs substrate and its non-monotonic change throughout thickness in the MCT layer of constant composition and graded widegap layers at its boundaries. An increase in the angle θ was observed when growing the upper graded widegap MCT layer. The absolute value of the angle θ can be used for a qualitative assessment of the crystalline perfection of the HgCdTe layers
Динамика широкоапертурных гетеролазеров со сбоем фазы гофрировки брэгговской структуры
Authors: Кочаровская Е.Р. , Гинзбург Н.С. , Сергеев А.С. , Малкин А.М. , Заславский В.Ю.
Published: July 2022

Using the coupled-wave method supplemented by the quasi-optical approximation, we study the dynamics of wide-aperture distributed-feedback (DFB) heterolasers with planar resonators having a step of corrugation phase. In configurations where the width of the Bragg structure is several times smaller or equal to the width of the active zone, the diffraction transverse losses provide mode selection with respect to the transverse index and, simultaneously, suppress the excitation of the longitudinal modes with frequencies above the bandgap. Stable single-mode operation of the DFB-heterolaser is possible in the wide range of positions and values of the corrugation phase step, which determine the level and ratio of the values of power radiated from the opposite ends of the DFB heterolaser. Conditions are found that ensure almost unidirectional output of radiation.
Взаимодействие электромагнитной H-волны с полупроводниковым нанослоем
Authors: Кузнецова И.А. , Савенко О.В.
Published: July 2022

A theoretical model of the electromagnetic H-wave interaction with a semiconductor nanolayer, the thickness of which can be comparable to or less than charge carrier de Broglie wavelength is constructed. We assume the frequency range of the electromagnetic wave to be much less than the plasma frequency. Analytical expressions are derived for optical coefficients as the functions of the dimensionless thickness, electromagnetic wave frequency and incidence angle, chemical potential, and surface roughness parameters. The results derived for the limiting cases of degenerate and nondegenerate electron gas are analyzed.