bluuebunny/crossref_metadata_2025_split huggingface dataset:
Streaming video processing of marine scenes using advanced processor instructions
Authors: Фахми Ш.С. , Шаталова Н.В. , Костикова Е.В. 
Published: June 2021

Современные полупроводниковые технологии позволяют перейти к более развитым системам видеонаблюдения, где преобразование и обработка видеоинформации выполняются непосредственно на этапе съемки и формирования видеопотока. Умные камеры расширяют функциональность встроенных видеосенсоров, обеспечивая параллельную высокоуровневую обработку видео. В предлагаемом исследовании проведена разработка адаптивных алгоритмов спектрального преобразования изображений морских сюжетов, позволяющие решить необходимые задачи в реальном времени.Актуальным становится решение задачи использования современных процессорных технологий с использованием последних достижений в архитектуре процессорного ядра, в частности расширенные SSE-инструкции. Рассмотрен математический аппарат реализации адаптивных алгоритмов дискретного косинусного преобразования на базе SSEархитектуры процессорного ядра. Предложенные алгоритмы динамически выполняют предварительный анализ движения и определяют оптимальные размеры видеокубов. Для оценки эффективности предложенных алгоритмов сжатия было использовано множество различных изображений морских судов, полученных с камер и расположенных на беспилотниках с высоты 100-400м. Показаны результаты моделирования предложенных алгоритмов обработки видеоинформации морских сюжетов и определены количественные оценки информационных показателей качества видеосистем кодирования и декодирования изображений.
Modern semiconductor technologies allow us to move to more advanced video surveillance systems, where the transformation and processing of video information is performed directly at the stage of shooting and forming a video stream. Smart cameras even extend the functionality of the built-in video sensors, providing parallel high-level video processing. In the proposed study, adaptive algorithms for spectral transformation of images of marine plots were developed, which allow solving the necessary problems in real time. The solution of the problem of using modern processor technologies using the latest achievements in the architecture of the processor core, in particular, advanced SSE instructions, becomes relevant. The mathematical apparatus for implementing adaptive algorithms for discrete cosine transformation based on the SSE architecture of the processor core is considered. Proposed algorithms dynamically perform preliminary motion analysis and determine optimal dimensions of video cubes. To evaluate the effectiveness of the proposed compression algorithms, many different images of naval vessels obtained from cameras and located on drones from a height of 100-400m were used. The results of modeling the proposed algorithms for processing video information of marine scenes are shown and quantitative estimates of information quality indicators of video systems for encoding and decoding images are determined.
Development potential of logistics in the Arctic zone of the Russian Federation through the use of drones
Authors: Шаталова Н.В. , Михов О.М. , Бородина О.В. 
Published: June 2021

В статье рассматривается содержание транспортно-логистических задач в Арктике, а также перспективы международного сотрудничества. Изучен опыт других стран – Канады, США – в использовании дронов в логистике и доставке грузов. Раскрыта сущность использования беспилотных летательных аппаратов в логистике Арктической зоны, охарактеризованы преимущества и недостатки дронов на сегодняшний день и специфика их использования в Арктической зоне. Предложено использовать дроны в таких направлениях, как мониторинг состояния окружающей среды; контроль реальной загруженности логистических площадок на земле; транспортировки и перевалки грузов. Предлагается создать базу для оценки эффективности бюджета развития дронов для обеспечения логистических процессов в Арктической зоне РФ. Для этого проведено экономическое обоснование использования дронов в Арктической зоне в виде расчета чистого дисконтированного дохода и срока окупаемости проекта по использованию БПЛА в Арктической зоне. В качестве фактора экономии выступает меньшая потребность в топливе по сравнению с традиционными видами транспорта, используемыми в Арктике. Выделены проблемы и перспективы развития беспилотных перевозок в Арктической зоне. Сделан вывод о возможностях и изменениях развития в логистической деятельности в Арктической зоне в ближайшие годы.
The article discusses the content of transport and logistics tasks in the Arctic, as well as the prospects for international cooperation. The experience of other countries – Canada, the United States – in the use of drones in logistics and cargo delivery was studied. The essence of the use of unmanned aerial vehicles in the logistics of the Arctic zone is revealed, the advantages and disadvantages of drones today and the specifics of their use in the Arctic zone are described. It is proposed to use drones in such areas as monitoring the state of the environment; monitoring the real workload of logistics sites on the ground; transportation and transshipment of goods. It is proposed to create a basis for evaluating the effectiveness of the budget for the development of drones to support logistics processes in the Arctic zone of the Russian Federation. For this purpose, an economic justification for the use of drones in the Arctic zone was carried out in the form of calculating the net discounted income and the payback period of the project for the use of UAVs in the Arctic zone. As a factor of economy, there is less need for fuel in comparison with traditional modes of transport used in the Arctic. The problems and prospects for the development of unmanned transportation in the Arctic zone are highlighted. The conclusion is made about the opportunities and changes in the development of logistics activities in the Arctic zone in the coming years.
Rotational Velocities of Am and Non-chemical-peculiar Stars Based on Kepler and LAMOST DR5
Authors: Qin Li , Luo A-Li , Hou Wen , Li Yin-Bi , Cui Kai-Ming , Zuo Fang , Zhang Shuo , Wang Rui , Han Jin-Shu , Wang Li-Li , Lu Yan , Chen Xiang-Lei 
Published: June 2021

Abstract
Rotation is a critical physical process operating in the formation of Am stars. There is a strong correlation between low-velocity rotation and chemical peculiarity. However, the existence of many non-chemical-peculiar slow rotators challenges the understanding of Am stars. The purpose of our work is to search for low-velocity rotating non-chemical-peculiar A-type stars and Am stars and to make a comparative analysis. In this paper, we pick out a sample from the LAMOST–Kepler project, including 21 Am stars, 125 non-chemical-peculiar slow rotators, and 53 non-chemical-peculiar fast rotators. We calculate the rotational frequencies through a periodic change of light curves caused by inhomogeneous stellar surfaces and then obtain the rotational velocities. For slow rotators, the age of Am stars is statistically younger than that of non-chemical-peculiar stars in the same temperature bin. In the comparison of the period, the average amplitude, and stellar mass of Am and non-chemical-peculiar stars, we discover that there is no difference in the photometric variability between Am and non-chemical-peculiar stars, which implies similar inhomogeneities on the surfaces. The average amplitude of non-chemical-peculiar stars has a downward trend with the increase of effective temperature and stellar mass, which is consistent with the theoretical prediction caused by weak dynamo-generated magnetic fields in A-type stars. In addition, we confirm four non-chemical-peculiar stars that have flares by checking field-of-view images, pixel images, and pixel-level light curves.
Warm Jupiters in TESS Full-frame Images: A Catalog and Observed Eccentricity Distribution for Year 1
Authors: Dong Jiayin , Huang Chelsea X. , Dawson Rebekah I. , Foreman-Mackey Daniel , Collins Karen A. , Quinn Samuel N. , Lissauer Jack J. , Beatty Thomas , Quarles Billy , Sha Lizhou , Shporer Avi , Guo Zhao , Kane Stephen R. , Abe Lyu , Barkaoui Khalid , Benkhaldoun Zouhair , Brahm Rafael , Bouchy François , Carmichael Theron W. , Collins Kevin I. , Conti Dennis M. , Crouzet Nicolas , Dransfield Georgina , Evans Phil , Gan Tianjun , Ghachoui Mourad , Gillon Michaël , Grieves Nolan , Guillot Tristan , Hellier Coel , Jehin Emmanuël , Jensen Eric L. N. , Jordán Andres , Kamler Jacob , Kielkopf John F. , Mékarnia Djamel , Nielsen Louise D. , Pozuelos Francisco J. , Radford Don J. , Schmider François-Xavier , Schwarz Richard P. , Stockdale Chris , Tan Thiam-Guan , Timmermans Mathilde , Triaud Amaury H. M. J. , Wang Gavin , Ricker George , Vanderspek Roland , Latham David W. , Seager Sara , Winn Joshua N. , Jenkins Jon M. , Mireles Ismael , Yahalomi Daniel A. , Morgan Edward H. , Vezie Michael , Quintana Elisa V. , Rose Mark E. , Smith Jeffrey C. , Shiao Bernie 
Published: June 2021

Abstract
Warm Jupiters—defined here as planets larger than 6 Earth radii with orbital periods of 8–200 days—are a key missing piece in our understanding of how planetary systems form and evolve. It is currently debated whether Warm Jupiters form in situ, undergo disk or high-eccentricity tidal migration, or have a mixture of origin channels. These different classes of origin channels lead to different expectations for Warm Jupiters’ properties, which are currently difficult to evaluate due to the small sample size. We take advantage of the Transiting Exoplanet Survey Satellite (TESS) survey and systematically search for Warm Jupiter candidates around main-sequence host stars brighter than the TESS-band magnitude of 12 in the full-frame images in Year 1 of the TESS Prime Mission data. We introduce a catalog of 55 Warm Jupiter candidates, including 19 candidates that were not originally released as TESS objects of interest by the TESS team. We fit their TESS light curves, characterize their eccentricities and transit-timing variations, and prioritize a list for ground-based follow-up and TESS Extended Mission observations. Using hierarchical Bayesian modeling, we find the preliminary eccentricity distributions of our Warm-Jupiter-candidate catalog using a beta distribution, a Rayleigh distribution, and a two-component Gaussian distribution as the functional forms of the eccentricity distribution. Additional follow-up observations will be required to clean the sample of false positives for a full statistical study, derive the orbital solutions to break the eccentricity degeneracy, and provide mass measurements.
Determination of Rotation Periods for a Large Sample of Asteroids from the K2 Campaign 9
Authors: Podlewska-Gaca Edyta , Poleski Radosław , Bartczak Przemysław , McDonald Iain , Pál András 
Published: June 2021

Abstract
The Kepler mission is a powerful tool for the study of different types of astrophysical objects or events in the distant universe. However, the spacecraft also provides an opportunity to study solar system objects passing in the telescope’s field of view. The aim of this paper is to determine, for the first time, the rotation periods of a number of asteroids observed by the K2 satellite during the K2 Campaign 9. Using publicly available data from the Kepler mission, we have used the Modified Causal Pixel Model code to perform the aperture-like and point-response function–like photometry of 1026 asteroids. The results allowed us to determine the rotation periods for 188 asteroids. For asteroids with rotation periods that were previously measured, we compared the results and found very good agreement. There are an additional 20 asteroids for which we obtained lower limits on rotation periods and in all cases these limits are at least 100 hr.
Editorial
Authors: Gütl Christian 
Published: June 2021

Welcome to the sixth issue in 2021. I am very pleased to announce the journals’ Scopus CiteScore of 2.0 for 2020 indicating another scientifically successful year. On behalf of the J.UCS team, I would like to thank all authors for their sound research contributions, the reviewers for their very helpful suggestions and the consortium members for their financial support. Your commitment and dedicated work have strongly contributed to the long-lasting success of our journal.
In this regular issue, I am very pleased to introduce five accepted papers from six different countries and 17 involved authors.
Edinelço Dalcumune, Luis Antonio Brasil Kowada, André da Cunha Ribeiro, Celina Miraglia Herrera de Figueiredo and Franklin de Lima Marquezino from Brazil present in their article a new algorithm for synthesis of reversible circuits for arbitrary n-bit bijective functions using generalized Toffoli gates, which include positive and negative controls. Murat Firat, Derya Yiltas-Kaplan and Ruya Samli introduce their work on a machine learning method - including Artificial Neural Network (ANN), Linear Regression (LR) and Gradient Boosting (GB) - for determining optimal seat capacity that can supply the highest load factor for the flight operation between any two countries. In a collaborative research between Switzerland, China and the Netherlands Fabian Honegger, Yuan Feng and Matthias Rauterberg have investigated in their research effects of visual, auditory, vibration and draught stimuli on the sense of presence. Julio Moreno, David G. Rosado, Luis E. Sánchez, Manuel A. Serrano and Eduardo Fernández-Medina from Spain discuss in their research a security reference architecture for cyber-physical systems. Adem Tuncer from Turkey introduces a new approach based on a Artificial Bee Colony Algorithm for solving the 15-puzzle problem.
Entre construction identitaire, transmission et enchantement : formes et fonctions du récit dans une grande ONG
Authors: Errecart Amaia 
Published: June 2021

Cet article vise à explorer les formes et les fonctions du récit au sein d’une grande ONG spécialisée dans la défense des droits humains, Amnesty International France , à partir d’un corpus d’entretiens et d’un ensemble de textes recueillis sur son site Internet institutionnel. S’inscrivant en sciences de l’information et de la communication et mobilisant l’analyse de discours, notre approche des formes narratives à l’œuvre dans les discours étudiés s’appuie sur l’analyse des rhétoriques, des stratégies argumentatives, des logiques de présentation de soi ou d’ ethos , selon trois axes qui sont autant de fonctions du récit au sein de l’ONG : la construction identitaire, la transmission et l’enchantement.
Bóvedas tabicadas en la ingeniería militar española (s. XVIII)
Authors: Lluis i Ginovart Josep , Lluis-Teruel Cinta , Ugalde-Blázquez Iñigo 
Published: June 2021

El Duque de Belle-Isle y el Conde de Espié habían conocido en sus campañas de la Guerra de Sucesión (1701-1715) la voûte à la Roussillon. Estas bóvedas tabicadas obtuvieron una buena crítica en toda Europa y también en España (donde eran conocidas desde el siglo XIV) gracias a la difusión de los textos del Conde de Espié (1754) y de Pierre Patte (1777). Se determina qué uso tuvieron las bóvedas tabicadas desde el punto de vista de la construcción militar, favorecidas por sus supuestas cualidades mecánicas, y cuál fue la repercusión entre los ingenieros militares españoles del siglo XVIII. El estudio concluye que la localización de los proyectos realizados con esta técnica por ingenieros militares en el Levante español, coincide con los lugares donde ya existía una mano de obra especializada y que conocía esta técnica constructiva.
Preparation and characterization of Eudragit L 100-55/chitosan enteric nanoparticles containing omeprazole using general factorial design
Authors: Rezazadeh Mahboubeh , Safaran Reza , Minaiyan Mohsen , Mostafavi Abolfazl 
Published: June 2021

Background and purpose:
Omeprazole (OMP) is broadly used for the treatment of gastroesophageal reflux and other acid-related diseases. The current study aimed to prepare enteric-coated nanoparticles containing OMP to achieve a stable powder formulation easily prescribed in children.

Experimental approach:
The nanoparticles were formed by complex coacervation method using chitosan (CTS) and Eudragit L100/55 (EU) and the impact of various formulation variables (the concentrations of EU solution and its volume ratio to CTS solution) were assessed using 32 fractional design. The mean particle size (PS), zeta potential (ZP), encapsulation efficiency (EE), and drug loading (DL) were determined. Finally, the pharmacological effects of the optimized OMP enteric nanoparticles were evaluated by an in vivo antiulcer study using Sprague-Dawley rats.

Findings/Results:
The highest desirability value was for formulation F5 (containing EU concentration 4 mg/mL and EU/CTS volume ratio 2:1). PS, ZP, EE, and DL of the optimized OMP-loaded nanoparticles were confirmed 810 ± 14 nm, -38.2 ± 1.8 mV, 83.1± 4.2%, and 13.1± 1.5%, respectively. in vitro release studies showed the pH sensitivity of nanoparticles and OMP release was pH-dependent. in vivo pharmacological assessment revealed that the optimized formulation was able to protect rat stomach against ulcer formation induced by indomethacin compared to the group that received normal saline which demonstrated severe peptic ulcer and hemorrhagic spots.

Conclusion and implication:
Our results indicated that the enteric EU/CTS nanoparticles were successfully prepared via a complex coacervation method and their efficacy could be comparable with commercial OMP pellets.
Phytochemical screening, antioxidant potential, and cytotoxic effects of different extracts of red algae (Laurencia snyderiae) on HT29 cells
Authors: Karimzadeh Katayoon , Zahmatkesh Asgar 
Published: June 2021

Background and purpose:
Marine algae are potential renewable and sustainable sources of bioactive natural products which can be utilized in nutraceutical and pharmaceutical industries.

Experimental approach:
Different extracts (methanol, chloroform, and ethyl acetate) of red algae, Laurencia snyderiae, was evaluated for their antioxidant potential, with various antioxidant assessment assays, cytotoxic properties (using MTT colorimetric assay), and phytochemical constituents (total phenolic and flavonoid contents). The GC-MS analyses of the algal methanolic extract and its apoptotic effects on the human colon carcinoma cell line (HT29) were also investigated.

Findings/Results:
The total phenolic content in the methanol, chloroform, and ethyl acetate extracts of L. snyderiae was 3.6 ± 0.12, 3.2 ± 0.41, and 3.3 ± 0.35 μg/mg of gallic acid, respectively. Among different algae extracts, chloroform extract showed significantly chelating ability (IC50 = 0.027 mg/mL) and reducing power activity (IC50 = 0.082 mg/mL), while the highest DPPH scavenging activity (IC50 = 0.058 mg/mL) exhibited in the methanol extract compared to the other extracts. The methanolic extract was found to have a higher cytotoxicity effect on colon carcinoma cells with IC50 70.2 μg/mL. The viability of the cancer cells was increased with the decrease in the concentration in different extracts. GC-MS analysis of the algal methanolic extract revealed the presence of active antitumor constituents and apoptosis-based cytotoxicity against colon cancer cells through the DNA damage was also confirmed.

Conclusion and implications:
Based on these results, the red algae L. snyderiae possesses potent bioactive constituents and can use as additional resources as a natural antioxidant and antitumor agent in the pharmaceutical and nutraceutical area.
Benzylidene-6-hydroxy-3,4-dihydronaphthalenone chalconoids as potent tyrosinase inhibitors
Authors: Ranjbar Sara , Kamarei Mehraneh Mohammadabadi , Khoshneviszadeh Mahsima , Hosseinpoor Hona , Edraki Najmeh , Khoshneviszadeh Mehdi 
Published: June 2021

Background and purpose:
Tyrosinase enzyme has a key role in melanin biosynthesis by converting tyrosine into dopaquinone. It also participates in the enzymatic browning of vegetables by polyphenol oxidation. Therefore, tyrosinase inhibitors are useful in the fields of medicine, cosmetics, and agriculture. Many tyrosinase inhibitors having drawbacks have been reported to date; so, finding new inhibitors is a great need.

Experimental approach:
A variety of 6-hydroxy-3,4-dihydronaphthalenone chalcone-like analogs (C1-C10) have been synthesized by aldol condensation of 6-hydroxy tetralone and differently substituted benzaldehydes. The compounds were evaluated for their inhibitory effect on mushroom tyrosinase by a spectrophotometric method. Moreover, the inhibition manner of the most active compound was determined by Lineweaver-Burk plots. Docking study was done using AutoDock 4.2. The drug-likeness scores and ADME features of the active derivatives were also predicted.

Results/Findings:
Most of the compounds showed remarkable inhibitory activity against the tyrosinase enzyme. 6-Hydroxy-2-(3,4,5-trimethoxybenzylidene)-3,4-dihydronaphthalen-1(2H)-one (C2) was the most potent derivative amongst the series with an IC50 value of 8.8 μM which was slightly more favorable to that of the reference kojic acid (IC50 = 9.7 μM). Inhibitory kinetic studies revealed that C2 behaves as a competitive inhibitor. According to the docking results, compound C2 formed the most stable enzyme-inhibitor complex, mainly via establishing interactions with the two copper ions in the active site. In silico drug-likeness and pharmacokinetics predictions for the proposed tyrosinase inhibitors revealed that most of the compounds including C2 have proper drug-likeness scores and pharmacokinetic properties.

Conclusion and implications:
Therefore, C2 could be suggested as a promising tyrosinase inhibitor that might be a good lead compound in medicine, cosmetics, and the food industry, and further drug development of this compound might be of great interest.
E-Health
Authors: Latifi Masoomeh , Anvari Tafti Motahare , Davari Dolatabadi Nasrin , Rafiei Zahra , Allahbakhshian Farsani Leili 
Published: June 2021

Background:
Patients with heart failure are one of the high-risk groups for coronary artery. Distance education of self-care behaviors can be effective in preventing the disease. The aim of this study was to investigate the effect of social networks in explaining the awareness of cardiovascular patients' self-care behaviors toward COVID-19.

Materials and Methods:
In the present survey study, 227 patients with a history of heart failure were selected from Shahid Rajaei Hospital in Tehran by the available sampling method (May to July 2020). Data collection tools were the standard European Self-Care Behavior Questionnaire for heart failure and the Dorty Elizabeth Orem self-care model. Data were analyzed using SPSS Version 22.

Results:
The results of the Pearson correlation coefficient showed a positive and relatively strong linear relationship between the variable of the degree of persistence in the use of networks with the eight dimensions of self-care behavior except psychological emotion control (r = −0.39, P = 0.315). Furthermore, a significant weak inverse relationship between the dimension of “cooperation with physicians and treatment staff” (r = −0.22, P = 0.129). Moreover, psychological support (r = −0/034, P = 0.446) was observed with the use of networks. Multivariate regression analysis revealed that the type of activity and participation in networks has a greater share and effect in increasing the score of self-care behavior of 0.55.

Conclusions:
Since the use of networks has a positive effect on patients' self-care behavior, the use of these networks is recommended as a community-based approach in the health system and to improve health and health outcomes.