bluuebunny/crossref_metadata_2025 huggingface dataset:
Distributed electric current and its relation to ultraviolet radiation of the active region
Authors: Fursyak Yu.A. , Kutsenko A.S.
Published: November 2021

We utilized full magnetic field vector magnetogramsacquired by the Helioseismic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory (SDO) to calculate vertical electric currents in the NOAA active region (AR) 12192. The AR was tracked between October 22, 2014 and October 25, 2014 with 720 s cadence. We revealed the presence of a large-scale electric current structure – distributed electric current – with the absolute magnitude varying in the range of (40–90)·1012 A. The distributed electric current is supposed to exist throughout the entire AR, and, extending to the upper layers of the solar atmosphere in one part of the AR, it closes through the chromosphere and corona in the remaining part of the AR. To test this assumption, we have compared the temporal variation of the distributed electric current value with the flare activity level (using GOES-15 data), as well as with intensity of ultraviolet radiation (UV) in the AR (using the Atmospheric Imaging Assembly (AIA/SDO) data in channels 94 Å, 193 Å, 304 Å, and 1600 Å). We found that: i) Time intervals of enhanced flare activity are co-temporal with intervals of increased values of the distributed electric current. The absence of rapid changes in the value of the distributed electric current during solar flares can be explained by high inductance of the current-carrying magnetic loops. ii) Rough estimates of the magnetic energy carried by the distributed electric current into the corona yield the values of about 1033–1034 erg for 12192. Onlya small amount of this energy is released during flare processes in the AR. Most of this energy seems to be consumed during other dissipative processes in the corona. iii) Comparison of the temporal variations of intensity in the 193 Å UV-radiation channel with dynamics of the distributed electric current in the AR reveals a good positive correlation between these values (Pearson’s R = 0.63). The absence of a correlation between the distributed electric current value and the intensity of UV radiation in channels 1600 Å, 304 Å and 94 Å might be explained by a low efficiency of the coronal loop heating by ohmic dissipation of electric currents in the corona due to the strong dependence of plasma conductivity on temperature. iv) Our results may support the concept of equivalent LRC circuit of a current-carrying coronal magnetic loop proposed by Alfven and Carlqvist in 1967 and developed by V.V. Zaitsev, A.V. Stepanov, and others. According to this model, the large-scale electric currents must exist in the upper layers of the solar atmosphere and take part in the coronal plasma heating.
Factors Affecting E-Scooter Sharing Purchase Intention: An Analysis Using Unified Theory of Acceptance and Use of Technology 2 (UTAUT2)
Authors: Irwan Putri Belinda Azzahra , Atha Farhan , Rizka Fathiyya , Amalia Rizki , Husna Shafira
Published: November 2021

Transportation uses a significant amount of energy and burns most of the world energy consumers. As a result, it gives effect to the environment, such as air pollution in the forms of carbon dioxide, carbon monoxide, nitrogen oxide, hydrocarbons or volatile organic compounds, and particulate matter. Those compounds contribute a phenomenon called global warming. Within the transportation sector, road transport is the largest contributor to global warming. To cope with global warming, environmental regulations in developed countries are trying to reduce the individual vehicle's emissions. However, this has been counterbalanced by an increase in the number of vehicles and increased use of each vehicle. Therefore, micro-mobility may alleviate several challenges facing big cities today and offer more sustainable urban transportation. This research utilizes the framework of the UTAUT2 to identify and build a quantitative approach to identify factors related to the purchase intention factors of e-scooter sharing. The 200 respondents' field data were collected in Jakarta Metropolitan Area (Jabodetabek) as a rapid increase in pollution level. The linear regression study revealed that the consumers' purchase intention of e-scooter sharing is shaped by seven main factors: performance expectancy, effort expectancy, social influence, facilitating condition, hedonic motivation, price value, and habit. Those factors can explain 81 percent of the field data. Moreover, a brief recommendation for related stakeholders based on the research result is proposed to increase the adoption of e-scooter sharing. The practical implication resulted from this analysis are suggested policy measures the e-scooter sharing environmentally impact potency and strengthening circular economy as a part of green economy achievement in the communities.
The state of the digestive organs of workers of harmful productions
Authors: Poteryaeva E. L. , Smirnova E. L. , Nesina I. A. , Karmanovskaya S. A. , Kiseleva T. V. , Pozdnyakov I. M.
Published: November 2021

An analysis of the data available in the scientifi c literature on the modern understanding of the infl uence of harmful production factors on the state of the gastrointestinal tract in workers has been carried out. The results of the analysis made it possible to systematize the data of long-term study of the infl uence of production factors on the formation of diseases of the digestive system. The data on the prevalence of diseases of the digestive system in various professional groups are presented. An in-depth analysis of the relative risk indicators showed that the pathology of the digestive system in workers in hazardous industries can be attributed to production- related.
Potential adherence to treatment in gastroenterological patients
Authors: Gorbenko A. V. , Skirdenko Yu. P. , Nikolaev N. A. , Livzan M. A. , Andreev K. A. , Fedorin M. M.
Published: November 2021

Objective. To assess the level of potential adherence to treatment in patients with gastrointestinal syndromes.

Material and Methods. The open-label, cross- sectional study included 264 respondents who underwent preventive examinations. To identify gastroenterological syndromes we used Gastrointestinal Simptom Rating Scale (GSRS) questionnaire, which allows assessing the presence and the intensity of diarrheal, dyspeptic, constipation, refl ux syndrome and abdominal pain syndrome. The study group includes respondents who, according to the results of the GSRS questionnaire, have at least one syndrome (from 2 or more points) (N = 140). The comparison group included participants without gastrointestinal syndromes (N = 124). The level of adherence was assessed using the Quantitative Adherence Assessment Questionnaire (QAA-25). A score of less than 50% corresponds to a low level of adherence; a score between 50% and 75% corresponds to a medium level of adherence. Of 75% and above is considered to be a high and suffi cient level of adherence in the respondent.

Results. Absolutely all respondents demonstrated an insuffi cient level of adherence to both drug therapy and medical support and lifestyle modifi cations. One in ten study participants had an medium level of adherence. The other 90% of patients from all groups had a low level of compliance (less than 50%) in all three areas of treatment adherence.

Conclusions. Participants in our study were potentially unprepared for adherence to treatment that is consistent with optimal protocols. This demonstrates the need to work with adherence, both using ways to increase adherence and using patientcentered approaches that take into account the individual level of adherence.
Nonalcoholic liver disease: review with a focus on risks of progression
Authors: Teplyuk D. A. , Semenistaya M. Ch. , Sorokoletov S. M. , Lazebnik L. B. , Pavlov Ch. S.
Published: November 2021

Nonalcoholic fatty liver disease (NAFLD) is a disease which etiology is related to various metabolic, ethnic, genetic and even ecologic factors. Complexity of etiology and multiply pathogenesis ways, leading eventually to the lipid droplets appearance in hepatocytes, infl ammation process and parenchyma fi brosis in liver, and also frequent cardiometabolic comorbidities, together make diffi cult risks stratifi cation and prognosis evaluation in NAFLD patients. Another matter is a question of NAFLD therapy, since unifi ed pharmacotherapy approaches are not yet adopted worldwide, and lifestyle modifi cation being accepted as an eff ective therapeutic approach, is not followed by patients in real world setting. Current review is dedicated to the consideration of NAFLD diagnostics, its risk of progression and existing therapeutical capabilities.
Compte rendu : David Diop, La Porte du voyage sans retour, Paris, Seuil, 2021
Authors:   Universitatea din Bucureşti, Tănase Daniela
Published: November 2021

Book review
La mythologie des dévorations : corps mangé et corps mangeant chez Matéi Visniec
Authors:   Universitatea din Bucureşti, Tudor Victoriţa
Published: November 2021

This article aims to comprehend the complexity of the mythology of devoration in Matei Visniec’s dramaturgy, to identify the paradigms of the consumed and the consuming body while gravitating around the concept of corporality, because the body represents a macro-sign, a matrix of meanings and the very identitary root of the individual. We attempt to emphasize the complementary dimensions of consuming, the pleasure and the terror, according to Gilbert Durand and to analyze the role played by food and the act of eating in the economy of Visniec’s theater.
L’(im)possible regard fenestral chez Toussaint et Viel ou comment poser les yeux sur le monde contemporain
Authors:   Universitatea din Bucureşti, Croitoru Cristina
Published: November 2021

It is quite legitimate to ask whether the gaze – a function which, nowadays, is considered to be inherent to the window – is still possible in a world felt more and more opaque by an alienated individual, who no longer has any roots and who finds himself abandoned to the emptiness of his existence, hopelessly fallen inside his own body, with his “eyes in the void”. Both the protagonists of Toussaint and those of Viel seem to inhabit a world that can be described as equivocal, false, devoid of benchmarks to which they do not belong. The empty immensity of an increasingly opaque society frightens and we find them in interior spaces which they fill but which they have not necessarily tamed. Thus, to speak of any window and of the inherent gaze, in this perspective, means also speak of a non-window or an absence of the window from which an impossible gaze emerges through it.
The Determinants of Cloud Computing Adoption in Healthcare
Authors: AlTwaijiry Ahmad
Published: November 2021

Cloud computing is useful for the healthcare sector since it reduces complexity, enables efficientadministration, and facilitates collaboration between the systems in healthcare sectors. This research seeksto examine the factors affecting the adoption of cloud computing in healthcare. It used three robust leastsquare estimation techniques such as S-estimation, M-estimation, and MM-estimation. The findings suggestthat the determinants of adoption of cloud computing are similar to other business institutions such ascompatibility, technological preparedness, complexity, security, competitive constraints, savings on costs,assistance to senior management, vendor assistance.
Ramanujan cab numbers: a recreational mathematics activity
Authors: banerjee soumya
Published: November 2021

The story of the Indian mathematician Srinivasa Ramanujan is inspiring. None is more inspiring thanthe story of the Ramanujan cab number 1729 and the sequence of numbers defined by the equation:x^3 + y^3 = p^3 + q^3where x, y, p and q are distinct positive integers. 1729 is the smallest number that can be expressedas the sum of two cubes in two different ways:10^3 + 9^3 = 12^3 + 1^3 = 1729We introduce teaching activities and software that can inspire people and help them enjoy thesebeautiful mathematical creations.
COVID-19 Stress and Sexual Identities
Authors: Manning Wendy , Kamp Dush Claire M
Published: November 2021

The COVID-19 pandemic has disrupted lives and resulted in high levels of stress. While the evidence at the societal level is clear, there have been no population-based studies of pandemic-based stress focusing on individuals who identify as sexual minorities. Drawing on representative data collected during the pandemic, National Couples’ Health and Time Use Study, we find that partnered (cohabiting or married) individuals who identified as sexual minorities experienced higher levels of stress than individuals who identified as heterosexual. However, variation exists observed among sexual minority adults. Although economic resources, discrimination, social and community support and health conditions are tied to reported stress levels they do not explain differentials according to sexual identity. These results provide evidence that sexual minority adults faced greater stress during the pandemic and the importance of recognizing that sexual minorities are not a monolithic group with varying stress responses to the pandemic.
Defended or defunded? Local and state policy outcomes of the 2020 Black Lives Matter protests
Authors: Ebbinghaus Mathis , Bailey Nathan , Rubel Jacob
Published: November 2021

This article provides novel evidence on the local policy outcomes of the largest protest movement in U.S. history: the 2020 Black Lives Matter protests. Building on a hand-compiled dataset containing information on the 300 largest cities in the United States, data on state legislation, and comprehensive protest data, we assess whether two core political demands of the movement were realized. We find that protest did not affect city police budgets but did lead to the adoptions of state police reform. We do not find compelling evidence that protest affected agenda setting at the state-level. Although inconsequential in local politics overall, protest proved counterproductive in cities with large white population shares and large Republican population shares. We argue that local and state politics offer different political opportunities for protests to succeed. In state politics, protest creates electoral incentives to make political concessions. In local politics, a lack of political threat and the perception of protest as inconvenient create political incentives to resist policy change.
What’s behind a scratch card? Designing a mobile application using gamification to study customer loyalty: An experimental approach
Authors: Behl Abhishek , Pereira Vijay
Published: November 2021

The use of game design elements (often called gamification) by firms to engage the customers has attracted attention in recent times. These game elements contribute to shaping up customer’s motivation and loyalty. Gamification is explored from the lens of both empirical as well as an experimental methodological standpoint. There still lacks substantial evidence that explains how and which types of rewards help to understand the customer's motivation. The study addresses this gap by designing an experimental study of 2x2 to address how gamified mobile apps used for making payments can help capture customer’s loyalty by offering them rewards. Data is collected from 385 customers who have been using mobile apps to make payments in the past. The data were tested to check if gamification positively helps the user hedonic and utilitarian motivation, which then positively impacts their loyalty. The study is also moderated by type of rewards (direct cash rewards v/s indirect third party partnered rewards) on the relationship of gamification and customer loyalty mediated through motivation. The results confirm that mobile payment apps' cash rewards are more useful, especially when the degree of uncertainty in the game element is high (scratch card). Additionally, they contribute to a higher degree of utilitarian benefits to the customers. The results contribute to the extension of the self-determination theory and stimulus organism response framework as well.
The critical importance of a vascularized flap in preventing recurrence after endoscopic repair of spontaneous cerebrospinal fluid leaks and meningoencephaloceles
Authors: Michael Alex P. , Elbuluk Osama , Tsiouris Apostolos John , Tabaee Abtin , Kacker Ashutosh , Anand Vijay K. , Schwartz Theodore H.
Published: November 2021

OBJECTIVE

Spontaneous CSF leaks into the anterior skull base nasal sinuses are often associated with meningoencephaloceles and occur in patients with idiopathic intracranial hypertension (IIH). Endonasal endoscopic repair has become the primary method of choice for repair. The authors sought to evaluate the success rate of endoscopic closure and to identify predictive factors for CSF leak recurrence.

METHODS

A consecutive series of endonasally repaired anterior skull base meningoencephaloceles was drawn from a prospectively acquired database. Lumbar punctures were not performed as part of a treatment algorithm. All patients had at least 5 months of follow-up. Chart review and phone calls were used to determine the timing and predictors of recurrence. Demographic information and details of operative technique were correlated with recurrence. Two independent radiologists reviewed all preoperative imaging to identify radiographic markers of IIH, as well as the location and size of the meningoencephalocele.

RESULTS

From a total of 54 patients there were 5 with recurrences (9.3%), but of the 39 patients in whom a vascularized nasoseptal (n = 31) or turbinate (n = 8) flap was used there were no recurrences (p = 0.0009). The mean time to recurrence was 24.8 months (range 9–38 months). There was a trend to higher BMI in patients whose leak recurred (mean [± SD] 36.6 ± 8.6) compared with those whose leak did not recur (31.8 ± 7.4; p = 0.182). Although the lateral recess of the sphenoid sinus was the most common site of meningoencephalocele, the fovea ethmoidalis was the most common site in recurrent cases (80%; p = 0.013). However, a vascularized flap was used in significantly more patients with sphenoid (78.3%) defects than in patients with fovea ethmoidalis (28.6%) defects (Fisher’s exact test, p = 0.005). Radiographic signs of IIH were equally present in all patients whose leak recurred (75%) compared with patients whose leak did not recur (63.3%); however, an enlarged Meckel cave was present in 100% (2/2) of patients whose leaks recurred compared with 13.3% (4/30) of patients whose leaks did not recur (p = 0.03). The average meningoencephalocele diameter tended to be larger (1.73 ± 1.3 cm) in patients with recurrence compared to those without recurrence (1.2 ± 0.66 cm; p = 0.22). A ventriculoperitoneal shunt was already in place in 3 patients, placed perioperatively in 5, and placed at recurrence in 2, none of whose leaks recurred.

CONCLUSIONS

Recurrence after endonasal repair of spontaneous CSF leaks from meningoencephaloceles can be dramatically reduced with the use of a vascularized flap. Although failures of endonasal repair tend to occur in patients who have higher BMI, larger brain herniations, and no CSF diversion, the lack of vascularized flap was the single most important risk factor predictive of failure.
Consistent Reading of the Gospel During the Lent and the Passion Week
Authors: Воробьёв Тихон
Published: November 2021

Представленная статья посвящена рассмотрению богослужебной особенности последовательного чтения Евангелия в первые три дня Страстной седмицы. Одновременно рассматривается и практика подобного чтения Евангелия во дни Великого поста. Как правило, она связанна с переносом части указанного чтения со Страстной седмицы на предыдущие дни Великого поста. В статье анализируются основные литургические источники кафедрального и монастырского богослужебных обрядов. На основании анализа выдвигается гипотеза о происхождении практики полного чтения Евангелия в первые дни Страстной седмицы. По некоторым греческим и славянским богослужебным источникам рассматривается обычай переноса части чтения Евангелия со Страстной седмицы на другие дни Великого поста. Кроме этого, анализируются «Постные Евангелия» как памятник, фиксирующий последовательное чтение Евангелия во дни Великого поста. Обозначаются проблемы и перспективы дальнейших исследований данного вопроса и гипотезы для будущего изучения.

The present article is dedicated to the study of the liturgical features of the consistent reading of the Gospel in the first three days of the Passion Week and during the Lent. As a rule, they are connected by a transfer of a part of the prescribed reading from the Passion Week to the preceding days of the Lent. The article analyzes the main liturgical sources of the secular and regular liturgical rites. A hypothesis based on this analysis about the origin of the practice of the complete reading of the Gospel in the first days of Passion Week is put forward by the author. The custom of transferring some parts of the reading of the Gospel from Passion Week to other days of Great Lent is being considered in accordance to some Greek and Slavonic liturgical sources. In addition, the “Lenten Gospels” are analyzed as a monument fixing the consistent reading of the Gospel during the Lent. The problems and prospects for further research of this issue and hypotheses for future study are also indicated in the present article.
How Many Paradigms There are in Economic Theory – and Can it Become a One-paradigm Science
Authors: Egorov Dmitrij
Published: November 2021

Over the past 100 years, economics has stood out from other scientific disciplines because of the presence of two fundamentally different approaches to understanding its subject: from a systemic point of view, and from the point of view of individual choice. All the main directions of modern economic theory turn out to be reducible to two paradigms, conceptually related to two main interpretations of the economic science subject. The understanding of the economy as an equilibrium or non-equilibrium system is associated with two said paradigms. The author believes that the development of economic theory after Keynes can be interpreted as a series of attempts to integrate the identified paradigms. In another form, this is the question of the synthesis of micro- and macro-approaches in economic theory.
Значення творчості Роберта Візиренка-Клявіна та Дмитра Клявіна для розвитку балетного мистецтва України другої половини XX – початку XXI століття
Authors: Верховенко Ольга
Published: November 2021

Мета дослідження – вивчити сценічні здобутки Роберта Візиренка-Клявіна та Дмитра Клявіна в контексті їх артистичної, педагогічної та балетмейстерської діяльності. Методологія роботи базується на таких методах дослідження: загальноісторичному (задля вивчення історичних процесів, що відбувалися в балетному середовищі України у другій половині ХХ – на початку ХХІ ст.), історико-культурному (з метою дослідження хореографічної культури у виконавській і балетмейстерській площинах зазначеного періоду), аналітичному (для опрацювання наукової, культурологічної, мистецтвознавчої та театрознавчої літератури), системному (для узагальнення відомостей щодо творчого становлення Роберта та Дмитра Клявіних на сцені Національної опери України) та ін. Наукова новизна публікації полягає в тому, що вперше розглянуто артистичну, педагогічну та балетмейстерську діяльність танцівників династії Клявіних, яка істотно вплинула на розвиток балетної культури в Україні у другій половні ХХ – на початку ХХІ ст. Висновки. Роберт Візиренко-Клявін створив понад 20 оригінальних сценічних образів у балетах академічної спадщини та виставах радянської балетної класики. Упродовж 20-річної балетмейстерської діяльності хореограф поставив 7 балетів і взяв участь у підготовці хореографічних картин у кількох операх. Акторські здібності танцівника привернули увагу радянських режисерів, які надали можливість артисту заявити про себе у кінематографічній галузі – він зіграв 5 ролей у художніх кінострічках (2 з них – фільми- балети). Чимало професійних зусиль Р. Візиренко-Клявін приклав до формування вітчизняної чоловічої виконавської школи: понад 20 років він присвятив роботі в Київському ДХУ. Накопичений Р. Візиренком-Клявіним досвід актуалізував і розвинув його син – Дмитро Клявін, який створив на сцені Національної опери ім. Т. Шевченка близько 40 яскравих характерних партій. Плідною стала балетмейстерська діяльність артиста, відзначена 2019 р. премією ім. А. Шекери за досягнення у сфері хореографічного мистецтва України. Вагоме місце у творчості Д. Клявіна посіла педагогічна робота, розпочата у Київському ДХУ, яка триває і дотепер у Київській муніципальній академії танцю ім. С. Лифаря.
INTELLECTUAL HUMILITY – A MORAL CONSTRUCT, AN INTELLECTUAL VIRTUE
Authors:   Transilvania University of Braşov, Mitu Simona Mariana
Published: November 2021

: The present literature review brings together conceptualizations and study results obtained from extensive work that has been done on the virtue of Intellectual Humility (IH) for the pasts 9 years. While philosophers don’t settle yet to a single point of view on intellectual humility, psychologists take a pragmatic stance on the construct and evaluate possible implications IH can have on personal, social, and professional levels. The term is being extended to organizations, teams and organizational culture and studied in the intricate relationships established in the corporate culture. Studies in leadership also provide an insight of how organizations can benefit from the vision and culture a humble leader promotes.
PHOTOVOICE AS A TOOL FOR INCREASING AWARENESS AND PARTICIPATION IN LOCAL-BASED ENVIRONMENTAL EDUCATION
Authors:   Transilvania University of Braşov, Csesznek Codrina
Published: November 2021

Photovoice is a participatory technique used in sociology for presenting research results in form of visual stories. It can be a valuable tool to increase awareness and participation of citizens in local-based processes related to environmental education. This paper highlights some advantages of using photovoice as a visual participatory technique in improving environmental education, exploring some evidences from recent literature and presenting a case study conducted in Brasov, Romania. The case study is an example of how photovoice can be successfully used in working with social science students, in order to improve their professional skills for promoting local-based environmental education initiatives.
DETERMINANTS OF ATTITUDINAL COMPLIANCE DURING THE COVID-19 PANDEMIC
Authors:   ”1 Decembrie 1918” University of Alba Iulia, Pascaru Mihai
Published: November 2021

The paper presents the results of a survey administered to 1640 respondents from Romania and the Republic of Moldova in which a number of determinants have been taken into consideration like gender, age, education and COVID-19 exposure, verifying their association with attitudinal compliance. This notion has been conceptualized as agreement to prevention measures and willingness to get the COVID-19 vaccine. The results show a poor association with gender, but a more noticeable one with age and education. Direct exposure to the virus (personal contamination or loss of family member) did not seem to associate with higher levels of attitudinal compliance. Key words: COVID-19, prot
Оцінка змін якості підземних вод водоносних горизонтів Дніпровсько-Донецького артезіанського басейну
Authors: Lyutyi G. G. , Lyuta N. G. , Sanina I. V.
Published: November 2021

Методичними документами Водної рамкової директиви Європарламенту передбачено лише два класи якості підземних вод – “добра” і “погана”. Очевидно, що для оцінювання та картографування змін якості води цих двох градацій не досить. Тому було використано класифікацію Національного стандарту України “Джерела централізованого питного водопостачання. Гігієнічні та екологічні вимоги щодо якості води і правил вибирання” (ДСТУ 4808:2007), згідно з якою підземні води за показниками хімічного складу поділяють на чотири класи: “відмінна”, “добра”, “задовільна” і “посередня”. Щоб оцінити зміни якості підземних вод у часі, було порівняно гідрогеохімічні характеристики, отримані за результатами гідрогеологічного вивчення підземних вод на етапі розвідувальних робіт у період 60–70-х років XX сторіччя та гідрогеологічного довивчення раніше закартованих площ у 2000–2010 рр. Зіставлені дані за різні часові відтинки наочно засвідчили інтенсивний перебіг процесу забруднення підземних вод у четвертинних відкладах у межах Дніпровсько-Донецького артезіанського басейну (ДДАБ). Водночас негативних тенденцій змін якості підземних вод більш захищених – напірних водоносних горизонтів в еоценових і нижньокрейдово-сеноманських відкладах за період 1970–2010 рр. виявлено не було. Апробовані підходи картографічного оцінювання змін якості підземних вод у часі, рекомендовані ДСТУ 4808:2007, можна разом із іншими методами ефективно використовувати під час моніторингу підземних вод в Україні.
System modeling and control system performance optimization of magnetic suspension and balance system
Authors: Xia Wentao , Long Zhiqiang , Dou Fengshan
Published: November 2021

A magnetic suspension and balance system (MSBS) is a kind of aerodynamic test equipment for aircraft. It uses levitation control technology to replace the mechanical support and strain measurement technology in traditional wind tunnel balance. It has the advantage of no model support to interfere with the wind tunnel flow field and make the test environment more realistic, but the MSBS has technical difficulties to be solved. It is difficult to control and stabilize because it has a large suspension gap, nonlinear magnetic field, a long-acting distance of magnetic force, and uses a visual sensor to feedback the position of the controlled object that it has signal noise. At present, there are few studies on the suspension control method and suspension performance of MSBS. In this paper, in order to solve the above technical difficulties, the vertical control of the MSBS is taken as the research object, the electromagnetic field of the vertical coil is modeled and analyzed. A new control algorithm based on a fast-tracking differentiator (FTD) is proposed to solve the signal noise problem in MSBS. The influence of various factors in the control link on the suspension system is analyzed, and its optimization is carried out to improve the performance of the suspension system.
Effectiveness of different requirements checklists for novice designers
Authors: Altavilla Stefania , Becattini Niccolò , Fiorineschi Lorenzo , Rotini Federico
Published: November 2021

Working under constrained conditions can boost or kill creativity, depending on the nature of the constraints (organizational, personal or task-related). However, a design process without clearly identified constraints, which set the project objectives, could lead to inefficiencies and unfruitful iterations. Some of the most acknowledged procedures to support requirement definition are focused on the use of specific checklists. However, notwithstanding the importance of the task, little attention was dedicated to the verification of the effectiveness of these tools. In such a context, the paper presents an investigation aimed at assessing the performance of three checklists that exploit different strategies to elicit requirements. To that purpose, a sample of fifty engineering students was asked to use the checklists to define the requirements for a specific design case. The outcomes of the experiment were assessed according to well-acknowledged effectiveness metrics, i.e. quantity, operationality, validity, non-redundancy, and completeness. The result of the assessment highlights that checklists based on more general questions or abstract stimuli can better support novice designers in making explicit internally felt design constraints that can potentially lead to more innovative design.
A Prioritized Decision Making Method for Reliability Allocation: in Optimistic and Pessimistic View
Authors: Samanta Aniruddha , Basu Kajla
Published: November 2021

Reliability allocation is a very important problem during early design and development phases of a system. There are several reliability allocation techniques which are used to achieve the target reliability. The feasibility of objectives (FOO) technique is one of them that is widely used to perform system reliability allocation. But this technique has two fundamental shortcomings. The first is the measurement scale and the second is that it does not consider the order weight of the reliability allocation factors. The prioritization of the factors is also an important topic in decision making. Practically, all factors in multi-criteria decision making (MCDM) are not in the same priority level. Hence, in decision making situation, it is usual for decision makers to consider different priority factors. So, considering the prioritization of the factors, a reliability allocation method is proposed here to overcome the shortcomings of the FOO technique. Also, a case study on reliability allocation in airborne radar system is considered here to verify the efficiency of the proposed approach. Finally, the results are calculated in different optimistic and pessimistic view point and compared with the FOO technique. This comparison exhibits the advantages and supremacy of the proposed approach.
Brain Neuroimaging of Rapid Eye Movement Sleep Behavior Disorder in Parkinson’s Disease: A Systematic Review
Authors: Matzaras Rafail , Shi Kuangyu , Artemiadis Artemios , Zis Panagiotis , Hadjigeorgiou Georgios , Rominger Axel , Bassetti Claudio L.A. , Bargiotas Panagiotis
Published: November 2021

Background: REM-sleep behaviour disorder (RBD) is a parasomnia and a common comorbidity in Parkinson’s disease (PD). There is evidence that the presence of RBD is associated with more severe PD. The differences in the clinical manifestations and the natural history are likely to imply underlying differences in the pathophysiology among PD patients with and without RBD. The increasing number of neuroimaging studies support this notion. Objective: Our primary objective was to review the current evidence regarding the brain neuroimaging findings in PD patients with RBD (PDRBD). Methods: A systematic review of articles, published in PubMed between January 1, 2000 and September 23, 2020 was performed. We evaluate previous studies that assessed PD patients with RBD using various brain structural and functional magnetic resonance imaging (MRI) techniques and brain nuclear medicine imaging. Results: Twenty-nine studies, involving a total of 3,347 PD subjects among which 912 subjects with PDRBD, met the selection criteria and were included. The presence of RBD in PD patients is associated with structural and functional alterations in several brain regions, mainly in brainstem, limbic structures, frontotemporal cortex, and basal ganglia, raising the hypothesis of a PDRBD neuroimaging phenotype. Conclusion: The current review provides up-to-date knowledge in this field and summarizes the neurobiological/neuroimaging substrate of RBD in PD.
Electronic and structural computing features of some chromene derivatives and evaluating their anticancer activities
Authors: Azimzadeh-Sadeghi Setareh
Published: November 2021

Electronic and structural features of some of representative chromene derivatives were investigated in this work towards recognizing their anticancer roles. Density functional theory (DFT) calculations were performed to obtain five structures of chromene derivatives with the same skeleton of original structure. In addition to obtaining optimized structural geometries, electronic molecular orbital features were evaluated for the models. Energy levels of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) indicated effects of additional R group pf chromene derivatives on electronic features. Based on such results, it was predicted that one of derivatives, L5, could better participate in interactions with other substances in comparison with other ligand structures. This achievement was obtained based on availability of HOMO and LUMO levels in lower energies easily catchable for electron transferring. On the other hand, L5 was assumed to interact in the weakest mode with other substances. Indeed, the main goal of this work was to examine anticancer activity of the investigated chromene derivatives, in which each of L1–L5 chromene derivatives were analyzed first to recognized electronic and structural features. Next, molecular docking (MD) simulations were performed to examine anticancer role of L1–L5 against methyltransferase cancerous enzyme target. The results indicated that formations of ligand-target complexes could be occurred within different types of interactions and surrounding amino acids of central ligand. In agreement with the achievements of analyses of single-standing L1–L5 compounds, L4-Target was seen as the strongest complex among possible complex formations. Moreover, values of binding energies and inhibition constant indicated that all five chromene derivatives could work as inhibitors of methyltransferase cancerous enzyme by the most advantage for L4 ligand. And as a final remark, details of such anticancer activity were recognized by graphical representations of ligand-target complexes showing types of interactions and involving amino acids in interactions.
Management of well appearing infants born to afebrile mothers with inadequate GBS prophylaxis: A retrospective comparison of the three approaches recommended by the COFN
Authors: Beck T. , Sloane A.J. , Carola D.L. , McElwee D. , Edwards C. , Bell-Carey B. , Leopold K. , Greenspan J.S. , Aghai Z.H.
Published: November 2021

BACKGROUND: There are three different approaches set forth by the Committee on the Fetus and Newborn (COFN) for managing asymptomatic neonates born to mothers with inadequate intrapartum antibiotic prophylaxis (IAP) for early-onset Group B Strep (GBS) infection. The first approach is that of categorical risk factor assessments, and recommends that asymptomatic infants born to afebrile mothers with inadequate IAP for GBS be monitored with clinical observation for 36–48 hours. The second approach recommends serial physical examinations and vital signs for 36–48 hours to closely monitor changes in clinical condition for all patients. The Kaiser Permanente EOS risk calculator (SRC) is an example of the third approach, a multivariate risk assessment, and it takes into consideration several perinatal risk factors. This multivariate risk assessment then provides recommendations for reassessment and management based on presume risk of the infant developing or having Early Onset Sepsis (EOS). The aim of our study was to compare these three recently published recommendations from the COFN for the management of asymptomatic neonates born to afebrile mothers with inadequate IAP for GBS. STUDY DESIGN: This is a retrospective study of asymptomatic neonates with gestational age ≥35 weeks born to afebrile mothers with indicated inadequate IAP for GBS between April 2017 and July 2020. Management recommendations of the SRC were compared to the recommendations of categorical risk assessment and risk assessment based on clinical condition. RESULTS: A total of 7,396 infants were born during the study period, 394 (5.3%. to mothers with inadequate IAP. Recommendations for these infants according to both the categorical risk factor guideline and the clinical condition guideline include extended, close observation. However, the SRC recommended routine newborn care for 99.7%.f these infants. None of the infants developed EOS. CONCLUSION: The SRC recommend routine neonatal care without enhanced and prolonged observation for nearly all asymptomatic infants born to afebrile mothers with inadequate IAP. As none of the infants in this cohort had EOS, further studies in a larger cohort are needed to establish the safety of SRC in neonates born to mothers with inadequate IAP.
Intelligent Integrative Platform for Sharing Heterogenuous Stem Cell Research Data
Authors: Borziak Kirill , Parvanova Irena , Finkelstein Joseph
Published: November 2021

Recent studies demonstrated that comparative analysis of stem cell research data sets originating from multiple studies can produce new information and help with hypotheses generation. Effective approaches for incorporating multiple diverse heterogeneous data sets collected from stem cell projects into a harmonized project-based framework have been lacking. Here, we provide an intelligent informatics solution for integrating comprehensive characterizations of stem cells with research subject and project outcome information. Our platform is the first to seamlessly integrate information from iPSCs and cancer stem cell research into a single platform, using a multi-modular common data element framework. Heterogeneous data is validated using predefined ontologies and stored in a relational database, to ensure data quality and ease of access. Testing was performed using 103 published, publicly-available iPSC and cancer stem cell projects conducted in clinical, preclinical and in vitro evaluations. We validated the robustness of the platform, by seamlessly harmonizing diverse data elements, and demonstrated its potential for knowledge generation through the aggregation and harmonization of data. Future aims of this project include increasing the database size using crowdsourcing and natural language processing functionalities. The platform is publicly available at https://remedy.mssm.edu/.
Research on complex attribute big data classification based on iterative fuzzy clustering algorithm
Authors: Qian Li
Published: November 2021

In order to overcome the low classification accuracy of traditional methods, this paper proposes a new classification method of complex attribute big data based on iterative fuzzy clustering algorithm. Firstly, principal component analysis and kernel local Fisher discriminant analysis were used to reduce dimensionality of complex attribute big data. Then, the Bloom Filter data structure is introduced to eliminate the redundancy of the complex attribute big data after dimensionality reduction. Secondly, the redundant complex attribute big data is classified in parallel by iterative fuzzy clustering algorithm, so as to complete the complex attribute big data classification. Finally, the simulation results show that the accuracy, the normalized mutual information index and the Richter’s index of the proposed method are close to 1, the classification accuracy is high, and the RDV value is low, which indicates that the proposed method has high classification effectiveness and fast convergence speed.
Research on information classification and storage in cloud computing data center based on group collaboration intelligent clustering
Authors: Zhang Linlin , Zhang Sujuan
Published: November 2021

In order to overcome the problems of long time and low accuracy of traditional methods, a cloud computing data center information classification and storage method based on group collaborative intelligent clustering was proposed. The cloud computing data center information is collected in real time through the information acquisition terminal, and the collected information is transmitted. The optimization function of information classification storage location was constructed by using the group collaborative intelligent clustering algorithm, and the optimal solutions of all storage locations were evolved to obtain the elite set. According to the information attribute characteristics, different information was allocated to different elite sets to realize the classified storage of information in the cloud computing data center. The experimental results show that the longest time of information classification storage is only 0.6 s, the highest information loss rate is 10.0%, and the highest accuracy rate is more than 80%.
Application of deep learning image reconstruction algorithm to improve image quality in CT angiography of children with Takayasu arteritis
Authors: Sun Jihang , Li Haoyan , Li Haiyun , Li Michelle , Gao Yingzi , Zhou Zuofu , Peng Yun
Published: November 2021

BACKGROUND: The inflammatory indexes of children with Takayasu arteritis (TAK) usually tend to be normal immediately after treatment, therefore, CT angiography (CTA) has become an important method to evaluate the status of TAK and sometime is even more sensitive than laboratory test results. OBJECTIVE: To evaluate image quality improvement in CTA of children diagnosed with TAK using a deep learning image reconstruction (DLIR) in comparison to other image reconstruction algorithms. METHODS: hirty-two TAK patients (9.14±4.51 years old) underwent neck, chest and abdominal CTA using 100 kVp were enrolled. Images were reconstructed at 0.625 mm slice thickness using Filtered Back-Projection (FBP), 50%adaptive statistical iterative reconstruction-V (ASIR-V), 100%ASIR-V and DLIR with high setting (DLIR-H). CT number and standard deviation (SD) of the descending aorta and back muscle were measured and contrast-to-noise ratio (CNR) for aorta was calculated. The vessel visualization, overall image noise and diagnostic confidence were evaluated using a 5-point scale (5, excellent; 3, acceptable) by 2 observers. RESULTS: There was no significant difference in CT number across images reconstructed using different algorithms. Image noise values (in HU) were 31.36±6.01, 24.96±4.69, 18.46±3.91 and 15.58±3.65, and CNR values for aorta were 11.93±2.12, 15.66±2.37, 22.54±3.34 and 24.02±4.55 using FBP, 50%ASIR-V, 100%ASIR-V and DLIR-H, respectively. The 100%ASIR-V and DLIR-H images had similar noise and CNR (all P > 0.05), and both had lower noise and higher CNR than FBP and 50%ASIR-V images (all P < 0.05). The subjective evaluation suggested that all images were diagnostic for large arteries, however, only 50%ASIR-V and DLIR-H met the diagnostic requirement for small arteries (3.03±0.18 and 3.53±0.51). CONCLUSION: DLIR-H improves CTA image quality and diagnostic confidence for TAK patients compared with 50%ASIR-V, and best balances image noise and spatial resolution compared with 100%ASIR-V.
Neurovascular conflict with the compression of the motor portion of the trigeminal nerve: hemimasticatory spasm and Parry-Romberg syndrome. Case report
Authors:   Kazan State Medical University, Kazan, Russian Federation, Matveeva T.V. , Kazantsev A.Yu. ,   Kazan State Medical University, Kazan, Russian Federation, Aleskerova A.B. ,   Medical Wing of the Ministry of Internal Affairs in the Republic of Tatarstan, Kazan, Russian Federation, Gaifutdinov R.T. ,   Kazan State Medical University, Kazan, Russian Federation
Published: November 2021

The most common cause of neurovascular conflict (NVC) is the compression of the sensory portion of the trigeminal nerve root by artery or vein directly at the brainstem. This results in local demyelination manifested as the classic trigeminal neuralgia. The motor portion of the trigeminal nerve is affected less commonly. The authors describe a case history of a 26-year-old man with a verified NVC of the motor portion of the trigeminal nerve. At the onset, the disease manifested as intense pain paroxysms in the left side of the face preceded by a masseter muscle spasm that was accompanied by lockjaw and tongue biting (hemimasticatory spasm). Shortly after disease onset, facial hemiatrophy with local scleroderma developed. The diagnosis of NVC with the compression of the motor portion of the trigeminal nerve accompanied by hemimasticatory spasm and Parry-Romberg syndrome was verified by brain FIESTA MRI and needle EMG. Later on, these symptoms spontaneously regressed. Concepts of hemimasticatory spasm and facial hemiatrophy are discussed. The rarity of this condition, lack of information on the compression of the motor portion of the trigeminal nerve in NVC, unusual disease onset, and presentations make this issue interesting for a wide range of experts. KEYWORDS: neurovascular conflict, hemimasticatory spasm, facial hemiatrophy, Parry-Romberg syndrome, trigeminal neuralgia, trigeminal nerve, local scleroderma, oromandibular dystonia. FOR CITATION: Matveeva T.V., Kazantsev A.Yu., Aleskerova A.B., Gaifutdinov R.T. Neurovascular conflict with the compression of the motor portion of the trigeminal nerve: hemimasticatory spasm and Parry-Romberg syndrome. Case report. Russian Medical Inquiry. 2021;5(10):668–673 (in Russ.). DOI: 10.32364/2587-6821-2021-5-10-668-673.