bluuebunny/crossref_metadata_2025_split huggingface dataset:
The global harnack estimates for a nonlinear heat equation with potential under finsler-geometric flow
Authors: Azami Shahroud 
Published: December 2022

AbstractLet (Mn,F(t),m),t∈ [0,T], be a compact Finsler manifold withF(t) evolving by the Finsler-geometric flow$\begin{array}{} \displaystyle \frac{\partial g(x,t)}{\partial t}=2h(x,t), \end{array}$whereg(t) is the symmetric metric tensor associated withF, andh(t) is a symmetric (0, 2)-tensor. In this paper, we consider local Li-Yau type gradient estimates for positive solutions of the following nonlinear heat equation with potential$$\begin{array}{} \displaystyle \partial_{t}u(x,t)=\Delta_{m}u(x,t)-\mathcal{R}(x,t)u(x,t) -au(x,t)\log u(x,t),\quad(x,t)\in M\times [0,T], \end{array}$$along the Finsler-geometric flow, where 𝓡 is a smooth function, andais a real nonpositive constant. As an application we obtain a global estimate and a Harnack estimate. Our results are also natural extension of similar results on Riemannian-geometric flow.
A note on set-star-K-Menger spaces
Authors: Singh Sumit 
Published: December 2022

AbstractA spaceXis said to have theset-star-K-Menger propertyif for each nonempty subsetAofXand for each sequence (𝓤n:n∈ ℕ) of collections of open sets inXsuch that for eachn∈ ℕ,A⊆ ⋃ 𝓤n, there is a sequence (Kn:n∈ ℕ) of compact subsets ofXsuch thatA⊆$\begin{array}{} \bigcup\limits_{n \in \mathbb{N}} \end{array} $St(Kn, 𝓤n). In this paper, we prove that:There exists aT1set-star-Menger space which is not set-star-K-Menger and there exists a Tychonoff set-star-K-Menger space that is not set-star-Menger.Assuming 𝔡 = 𝔠, there exists a Tychonoff set-star-K-Menger space having a regular-closedGδ-subspace which is not set-star-K-Menger.If the Alexandroff duplicate of a spaceXis set-star-K-Menger, thenXis set-star-K-Menger.The product of set-star-K-Menger space and a compact space is rectangular set-star-K-Menger space.The above-mentioned results answer to Problem 2.5 and Problem 3.6, and give a partial answer to Problem 3.11 in [SINGH, S.:On set-star-K-Menger spaces, Publ. Math. Debrecen100(2022), 87–100]. Further, we continue to study the topological properties of set-star-K-Menger spaces.
Application research of acoustic black hole in floating raft vibration isolation system
Authors: Gao Shengyao , Tao Zhou , Li Yuhui , Pang Fuzhen 
Published: December 2022

AbstractAcoustic black holes have good application prospects in the field of vibration and noise reduction. Based on engineering practice, this study proposes a systematic process method for the application of acoustic black hole structure in raft structure, which provides new ideas and references for improving the vibration isolation performance of floating raft system and reducing the level of ship vibration and noise. The influence law of each parameter on structural vibration and the recommended value range of each parameter are given, which provides support for the systematic method and process of the application of acoustic black holes in the raft structure. Then, the acoustic black hole process is applied to a floating raft system. According to the characteristics of the raft structure, an application scheme of the acoustic black hole in the raft structure is formed, and the vibration level drop of the floating raft vibration isolation system before and after the acoustic black hole is embedded, calculated, and analyzed. The changes further improve the vibration reduction and isolation performance of the raft system and effectively reduced the mechanical noise level of the ship’s cabin.
Acacetin alleviates neuroinflammation and oxidative stress injury via the Nrf2/HO-1 pathway in a mouse model of spinal cord injury
Authors: Zhang Xin , Xu Lijun , Chen Xiang , Zhou Xianjie , Cao Lanhua 
Published: December 2022

AbstractSpinal cord injury (SCI) is a severe central nervous system disease, which may cause serious locomotor deficit. Acacetin is a flavone that possesses antioxidant and anti-inflammatory effects in different human diseases. The main purpose of this study was to explore whether acacetin ameliorates SCI in mice. A model of SCI was established in C57BL/6 mice. The Basso Mouse Scale (BMS) score, BMS subscore, mechanical hypersensitivity, and thermal hypersensitivity of mice were tested for determining the motor function. Immunofluorescence staining was utilized to detect NeuN, GFAP, and Iba-1 levels in spinal cord tissues. ELISA was utilized to assess the contents of proinflammatory factors such as interleukin (IL)-1β, IL-18, and tumor necrosis factor-alpha (TNF-α) in spinal cord tissues. The levels of oxidative stress markers, reactive oxygen species, thiobarbituric acid-reactive substances, superoxide dismutase, catalase, glutathione peroxidase, and glutathione were detected using their corresponding kits. Western blot was employed for estimating the levels of heme oxygenase 1 (HO-1), nuclear factor E2-related factor 2 (Nrf2), and Kelch-like ECH-associated protein 1 (Keap-1). In this study, acacetin treatment recovered the motor function in SCI mice. Acacetin improved neuron integrity and repressed glial cell activation in the spinal cord tissues of SCI mice. Furthermore, acacetin administration reduced the SCI-induced high concentrations of IL-1β, IL-18, and TNF-α, as well as inhibited oxidative stress in SCI mice. Moreover, acacetin activated HO-1/Nrf2 pathway in SCI mice. The neuroprotective effects of acacetin against SCI were reversed by Nrf2 inhibitor. Overall, acacetin alleviated neuroinflammation and oxidative stress injury by activating the Nrf2/HO-1 signaling pathway in the mouse models of SCI.
Enterotoxic potential of dietary cholesterol autoxidation products
Authors: Iaia Noemi , Canzoneri Federico , Rosso Ginevra , Menta Roberto , Biasi Fiorella 
Published: December 2022

Background
In both Western and Westernized diets, together with a relatively high amount of cholesterol, variable amountsof its oxidized metabolites, oxysterols, are consistently consumed. These oxysterols, mostly of non-enzymatic origin, are produced during sterol autoxidation in foodstuff manufacturing and storage.

Objective
This study aimed to analyze the potential enterotoxic effects of all main oxysterols of non-enzymatic origin so far identified in a variety of foods.

Experimental plan
Differentiated human intestinal cell monolayers (CaCo-2) were incubated up to 48 h in the presence or absence of 0.5, 1 or 5 µM with one out of seven non-enzymatic oxysterols, prior to the verification of minimal irreversible cell damage within the chosen concentration range.

Results
All tested oxysterols were proven to exert damaging effects on cell monolayers in vitro. The inflammatory interleukin-8 and monocyte chemotactic protein-1 were mostly upregulated by 7-ketocholesterol and 7β-hydroxycholesterol, respectively, then to a lower extent by 5α,6α-epoxycholesterol, 7α-hydroxycholesterol and 5β,6β-epoxycholesterol. 7-Ketocholesterol and 7β-hydroxycholesterol also appeared to be most effective in impairing claudin-1, occludin and E-cadherin proteins, followed by 25-hydroxycholesterol and triol.

Conclusions
The oxysterols consistently derived by food autoxidation were tested; they potentially impaired the integrity of the intestinal epithelial barrier and triggered an inflammatory response within 0.5–5 µM concentrations, easily reachable in a single Western meal.

Significance Statement
This comprehensive analysis focused on the potential impairment of the intestinal barrier by the main dietary non-enzymatic oxysterols, should guide further nutrition research aiming at defining a threshold amount of these cholesterol derivatives in order not to derange the physiological gut–brain axis.
Emergency Department Visits and Hospitalizations for Eating Disorders During the COVID-19 Pandemic
Authors: Milliren Carly E. , Richmond Tracy K. , Hudgins Joel D. 
Published: December 2022

Abstract

BACKGROUND AND OBJECTIVES
Recent studies have reported increasing eating disorder incidence and severity following the coronavirus disease 2019 (COVID-19) pandemic. In a diverse cohort of pediatric hospitals, we examined trends in the volume of emergency visits and inpatient admissions for eating disorders before and during the pandemic.

METHODS
We examined monthly trends in volume of patients with eating disorders (identified by principal International Classification of Diseases, 10th Revision, diagnosis codes) across 38 hospitals in the Pediatric Health Information System pre– (January 2018–March 2020) and post–COVID-19 onset (April 2020–June 2022). Using interrupted time series analysis, we examined the pre- and post monthly trends in eating disorder emergency and inpatient volume.

RESULTS
Before the pandemic, eating disorder emergency visit volume was increasing by 1.50 visits per month (P = .006), whereas in the first year postonset, visits increased by 12.9 per month (P &lt; .001), followed by a 6.3 per month decrease in the second year postonset (P &lt; .001). Pre–COVID-19, eating disorder inpatient volume was increasing by 1.70 admissions per month (P = .01). In the first year postonset, inpatient volume increased by 11.9 per month (P &lt; .001), followed by a 7.6 per month decrease in the second year postonset (P &lt; .001).

CONCLUSIONS
The volume of patients seeking emergency and inpatient eating disorder care at pediatric hospitals has increased dramatically since the pandemic onset and has not returned to prepandemic levels despite a decline in the second year postonset, with important implications for hospital capacity.
Efficacy of ultrasound in diagnosis of dirofilariasis in dogs caused by Dirofilaria immitis
Authors: Yevstafieva V. , Kryvoruchenko D. , Melnychuk V. , Nikiforova O. , Kone M. , Barabolia O. 
Published: December 2022

Ultrasonic diagnostics is a modern and effective method of laboratory testing of both animals and humans, used for estimation of overall state, and for detection of different pathologies in organs and systems. The aim of the present study was to establish the efficacy of ultrasonic diagnostics of dog dirofilariasis caused by Dirofilaria immitis parasitism, based on several indexes of invasion intensity. It was established that the number of D. immitis helminths found depended on the intensity indexes of microdirafilariasis invasion: using echocardiography, there were no helminths found under the index lower than 40 larvae/cm3. Under the index higher than that, we visualized 1–10 parasite individuals in the cavity of the right ventricle and right atrium, and at the tricuspid valve leaflets. It was established by the results of echocardiography of dogs invaded by D. immitis that the level of invasion intensity impacts significantly on the animals’ heart structure and function, and on their intracardiac hemodynamics. It was proved that under increase of microfilaria number in the blood, heart function deteriorates. Under the invasion intensity lower than 40 larvae/cm3, the changes were characterized by a slight increase in thickness of the posterior wall of the left ventricle in diastole, aorta diameter, left atrium and pulmonary artery (by 6.2%). Under the invasion intensity of 40–60 larvae/cm3, the deterioration in heart structure and function was followed by thickening of the interventricular septum in diastole, posterior wall of the left ventricle in diastole (by 5.6%), increase in ejection fraction index (by 7.0%), widening of aorta root, pulmonary artery, diameter of the left ventricle (by 21.4%), and with increase in indexes of ratio between diameters of the left ventricle and pulmonary artery, and aorta (by 15.6%). Signs of hemodynamic deterioration were established in sick animals, which was characterized by increase of blood speed in the tricuspid valve (by 33.7%), and its decrease in the pulmonary artery (14.1%). Under the invasion intensity higher than 60 larvae/cm3, the aforementioned indexes changed even more significantly. We observed thickening of the posterior wall of the right ventricle in diastole, decrease of the end-systolic size of the left ventricle (by 13.0%), blood speed increase in the aorta and mitral valve (by 12.2%). The obtained results show the necessity of echocardiographic testing of dogs with cardiac dirofilariasis, which allows effective proof of the diagnosis and also helps to understand the overall state of the animal more deeply and to provide it with the appropriate symptomatic cure.
Simplification of calibration of low-cost MARG sensors without high-precision laboratory equipment
Authors: Sabir Abdelhay , Zakriti Alia 
Published: December 2022

AbstractIn mechatronic-related applications, estimating orientation from a magnetic, angular rate, and gravity (MARG) sensor array is a significant topic. Representing attitude orientation is a well-known topic in the aerospace industry, where it plays a critical role in airplanes and unmanned aerial vehicles (UAVs), but it has also gained relevance in other sectors. However, most of the sensors utilized are quite expensive, heavy, and large, making them unsuitable for modest applications. This paper examines the performance of several sensors in low-cost hardware and high-acceleration environments. A theorical method was adopted to estimate Euler angles by using accelerometer, gyroscope and magnetometer, and a robust and easy to implement method calibration was proposed to calibrate the MARG sensor without any external equipment. An experimental verification of the proposed calibration method was completed. The experimental results are then interpreted to provide an insight to advantages and disadvantages for using each sensor separately.
Модель фильтрации информации в социальных медиа
Authors: Грушевская Вероника 
Published: December 2022

В условиях цифровой цивилизации искусственный интеллект оказывает существенное влияние на селекцию информационных потоков. Алгоритмы социальных сетей и поисковых систем отбирают контент с опорой на данные об интересах и поведении пользователя и его окружения. Однако характер массовых коммуникаций определяет не только автоматизированная селекция, но и сложная совокупность медийных, рекламных и рыночных процессов. Таким образом, необходимо систематизировать знания, описывающие распространение массмедийного контента в цифровой среде. В научной литературе только начинают анализироваться свой­ства медиасреды и ее влияния на человека и общество. Отдельные исследования и наблюдения описывают принципы распространения информации в социальных медиа, методы продвижения контента, новые возможности и трансформации медиасреды. Ученые фиксируют ряд дисфункций: эхо-камеры, возможности манипулирования общественным мнением на основе микротаргетинга и фальсификации реальности, ограничения выбора, связанные с естественным формированием пузырей фильтров, предвзятой и непрозрачной работой сервисов, диспропорциями медийной и рекламной активности разных социальных групп. В работе систематизированы актуальные научные публикации, описывающие процессы распространения и фильтрации информации в сетевых медиа, и проблемы, с ними связанные. Обзор научной литературы дополнен данными серии глубинных интервью с представителями молодежи Екатеринбурга, регулярно просматривающими контент популярных видеоблогов, которые проводились в 2021 г. с целью выявления объяснений привычек использования видеоблогов. Полученные данные позволили дополнить существующие модели автоматизированной селекции информации рядом важных социальных, когнитивных и психологических факторов селекции контента на этапе медиапотребления. В работе фиксируется общность дискурсивных принципов оформления развлекательного контента, доминирующего в видеоблогах, с массовыми дискурсивными феноменами, характерными для развлекательного сегмента традиционной журналистики, их гедонистическая направленность. Проанализированы вирусность и коллаборации как методы продвижения контента в видеоблогах, выявлены дискурсивные и стилистические маркеры и приемы, способствующие распространению информации. К таким маркерам можно отнести игровое начало, коллаборации, повышенную эмоциональность, провокационность и презентационность. Результатом работы стала модель фильтрации информации в социальных медиа, учитывающая индивидуальный, технологический, социальный, рекламный, дискурсивный и стратегический факторы.
Artificial Intelligence in Social Security: Opportunities and Challenges
Authors: Бенуашан Хассан 
Published: December 2022

Artificial intelligence (AI) is shaping up to be the transformative technology of our time and has become a powerful driver for social change. Social security institutions are progressively applying emerging technologies, including big data analysis, artificial intelligence, blockchain, and biometrics. The increasing use of AI by social security institutions is enabling more proactive and automated deliveries of social services. Although the potential of these technologies has not yet been fully tested nor explored, they are already providing relevant outcomes in key social security areas such as addressing error, evasion, and fraud, as well as developing effective approaches and automated solutions to customers’ concerns aimed at improving social services. The field of application of the technologies includes medical care, adaptive systems in robots carrying out dangerous activities at work, communication with insured people, and management of welfare benefits. However, the application of AI in the social sector also poses important challenges, prompting state institutions to consider how best to take full advantage of this new technology. Rapid introduction of automated technological solutions poses potential risks as well. This paper explores the various types of AI application and current and future uses of the AI in the field of social security, with a particular focus on strategies for governments as they consider implementing AI. It concludes that the use of AI in social security is both inevitable and potentially beneficial for all parties involved. It also is not necessarily either an unadulterated boon or bane but calls for careful planning and a comparative assessment of the benefits and challenges of AI versus human labour.
Роль спорта в «жизненном мире» людей с инвалидностью (на примере Волгоградского региона)
Authors: Ткаченко Ольга , Василенко Инна 
Published: December 2022

В статье анализируется жизненный мир людей с инвалидностью, занимающих активную жизненную позицию, в Волгоградском регионе. Авторы приходят к выводу о наличии объективных и субъективных ограничений, которые не способствуют полноценной жизни инвалидов в экономическом, социальном и психологическом плане. Ориентируясь на стереотипы относительно нетипичных людей, государство, социальные институты и индивиды структурируют социальную реальность, не включая в нее людей с ограниченными возможностями, что во многом объясняет неэффективность проводимых федеральных и региональных социальных программ. Статья ставит цель выявить причину того, почему инвалиды принимают на веру свой «ущербный статус». Жизненный мир инвалидов ограничен социальными контактами с первичной социальной группой, что не позволяет им сформировать «чувственный опыт», который необходим для полноценной жизни. Такая ситуация интуитивно принимается инвалидом, заранее определяя его пассивную позицию по отношению к себе и своей жизни. Теоретический анализ и результаты качественного глубинного интервью позволили показать, что спорт как часть жизненного мира, при условии активной жизненной позиции людей с инвалидностью, может поэтапно реконструировать или сконструировать их деятельность сначала в спорте, а затем, на его основе, создать полноценную социальную реальность. Спорт позволяет улучшить физическое состояние, поверить в себя и свои силы, реализоваться и в других сферах повседневной жизни: в работе, учебе, личной жизни. Результаты исследования позволили выделить два вектора, по которым люди с инвалидностью пришли к занятию спортом. Информанты с приобретенной инвалидностью посредствам спорта пытаются реконструировать свой жизненный мир «до». Инвалиды детства конструируют свой жизненный мир посредством социальных агентов: родителей, тренеров, коллег – создают новый, перспективный мир, смещающий фокус внимания на мир тренировок, соревнований и достижений, а затем в более широкий мир, в котором есть возможность саморазвития и самореализации.
Attitudes and Behaviors of Turkish Consumers Regarding the Olive Oil Consumption
Authors: ALTUNTAŞ Ümit , GÜZEL İsmail , YILMAZ Özlem , ULUATA Sibel , ÖZÇELİK Beraat 
Published: December 2022

Bu çalışmanın amacı, Türk tüketicilerinin Akdeniz diyetinin önemli bir parçası olan zeytinyağı tüketimine ilişkin tutum ve davranışlarını ortaya koymak, zeytinyağının duyusal özelliklerinin tüketiciler üzerindeki etkisini ölçmek ve bu konudaki farkındalıklarını ve tutumlarını belirlemektir. Literatür araştırması doğrultusunda, tüketicilerin zeytinyağı tercihinde en çok önem verdiği özellikler ve zeytinyağı satın alma/tüketim sıklığı Türkiye'de sıklıkla mutfaklarda kullanılan zeytinyağının önemi ve mevcut durumu göz önünde bulundurularak, tüketicilerin zeytinyağı tercihinde etkili olan parametreleri değerlendirmek için incelenmiştir. Zeytinyağı tüketim ve satın alma sıklığı, ambalaj tercihi, duyusal özelliklerin önemi gibi anket soruları hazırlanmış ve anket çalışması tasarlanmıştır. Bu anket çalışmasında tüketicilerin demografik ve sosyo-ekonomik yapıları da dikkate alınmış ve elde edilen verilerin demografik özelliklerine (cinsiyet, yaş, eğitim, gelir düzeyi) göre farklılık gösterip göstermediği istatistiksel olarak tespit edilmiştir. Belirlenen tasarım doğrultusunda "VETİ" programı ile hazırlanan anket Türkiye'de yaşayan 272 kişiye uygulanmıştır. Anketin istatistiksel analizi SPSS paket programı ile gerçekleştirilmiş, verilerin analizinde frekans dağılımı ve Ki kare Öz
Bu çalışmanın amacı, Türk tüketicilerinin Akdeniz diyetinin önemli bir parçası olan zeytinyağı tüketimine ilişkin tutum ve davranışlarını ortaya koymak, zeytinyağının duyusal özelliklerinin tüketiciler üzerindeki etkisini ölçmek ve bu konudaki farkındalıklarını ve tutumlarını belirlemektir. Literatür araştırması doğrultusunda, tüketicilerin zeytinyağı tercihinde en çok önem verdiği özellikler ve zeytinyağı satın alma/tüketim sıklığı Türkiye'de sıklıkla mutfaklarda kullanılan zeytinyağının önemi ve mevcut durumu göz önünde bulundurularak, tüketicilerin zeytinyağı tercihinde etkili olan parametreleri değerlendirmek için incelenmiştir. Zeytinyağı tüketim ve satın alma sıklığı, ambalaj tercihi, duyusal özelliklerin önemi gibi anket soruları hazırlanmış ve anket çalışması tasarlanmıştır. Bu anket çalışmasında tüketicilerin demografik ve sosyo-ekonomik yapıları da dikkate alınmış ve elde edilen verilerin demografik özelliklerine (cinsiyet, yaş, eğitim, gelir düzeyi) göre farklılık gösterip göstermediği istatistiksel olarak tespit edilmiştir. Belirlenen tasarım doğrultusunda "VETİ" programı ile hazırlanan anket Türkiye'de yaşayan 272 kişiye uygulanmıştır. Anketin istatistiksel analizi SPSS paket programı ile gerçekleştirilmiş, verilerin analizinde frekans dağılımı ve Ki kare testleri kullanılmıştır. Bu anket çalışması sonucunda, Türk tüketicilerin kendilerine yöneltilen sorulara verdikleri yanıtlara göre, incelenen demografik değişkenlere, "cinsiyet", "yaş" ve "eğitim durumu" ve "gelir düzeyi"ne göre istatistiksel farklılıklar bulunmaktadır.