cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Joint Angle-Based Skeleton Action Recognition
Creators: name: Fleece, Nicolas
Publisher: name: Université d'Ottawa | University of Ottawa
Year: 2024
Subjects: Machine Learning
Action Recognition

description: Human action recognition is a difficult task and topic of discussion in the computer vision community. There are consistent breakthroughs by large research groups using sophisticated state-of-the-art computation hardware. These advancements allow for very accurate predictions on complex action recognition datasets that can be generalized to tasks outside of these pre-defined datasets. However, a key weakness is that in order to run these models, the computation requirements are significant. We explore these models, as well as some models that utilize intermediate representations. These representations focus on the movement of the person throughout the frame, specifically the 'pose' data and translate this data into an intermediate representation that can be processed by compact models. We propose a novel intermediate representation utilizing only the angles of the joints of a person from one frame to another. This allows for the representation constructed to be completely invariant to the global position of the person in the frame, providing insights into how these small and very efficient representations and models can be used with good effectiveness.
Improving your ANR project thanks to Open Science
Creators: name: Féret, Romain
name: Bracco, Laetitia
name: Cheviron, Stéphanie
name: Lehoux, Elise
name: Arènes, Cécile
name: Li, Ling
Publisher: name: Zenodo
Year: 2020
Subjects: open science
grant proposals
funders
research data management
open access

description: Since 2019, the ANR has implemented Open Science requirements (Open Access to publications and Data Management Plan) for projects funded under the 2019 and subsequent calls for projects[i]. These obligations are part of the French national strategy for Open Science, initiated with the National Plan for Open Science[ii] in 2018. If funded projects have obligations, the project coordinators can anticipate these requirements as early as the grant proposal writing phase, when they draw up their full proposal. It allows them to improve the viability of their project by identifying support services and the means necessary to implement an ambitious Open Science strategy. Anticipating these aspects can also facilitate collaborations within teams and consortia to make Open Science an opportunity rather than a constraint. This guide has a practical aim to help researchers take into account Open Science in each section of their full proposal, but it is not: A collection of ready-to-use sentences or paragraphs, to be copied and pasted into project proposals. A document to be applied in its entirety regardless of project specifics. A document validated by the ANR that replaces or contradicts the policy and rules presented by the ANR in its official documents. [i] https://anr.fr/fr/lanr-et-la-recherche/engagements-et-valeurs/la-science-ouverte/ [ii] https://www.enseignementsup-recherche.gouv.fr/cid132531/plan-national-pour-la-science-ouverte-discours-de-frederique-vidal.html
description: This technical note has been produced by the working group on Research Data of Couperin: https://www.couperin.org/services-et-prospective/open-access/gtao The French version of this note is available at: https://doi.org/10.5281/zenodo.3769954
Improving the chances of success of its ANR project thanks to Open Science
Creators: name: Féret, Romain
name: Bracco, Laetitia
name: Cheviron, Stéphanie
name: Lehoux, Elise
name: Arènes, Cécile
name: Li, Ling
Publisher: name: Zenodo
Year: 2020
Subjects: open science
grant proposals
funders
research data management
open access

description: Since 2019, the ANR has implemented Open Science requirements (Open Access to publications and Data Management Plan) for projects funded under the 2019 and subsequent calls for projects[i]. These obligations are part of the French national strategy for Open Science, initiated with the National Plan for Open Science[ii] in 2018. If funded projects have obligations, the project coordinators can anticipate them as early as the writing of the grant proposal phase, when they draw up their full proposal. This is a good way of convincing their project evaluators (Scientific Evaluation Panels and external experts) that they are aware of this new policy. It also allows them to improve the viability of their project by identifying resource actors or the means necessary to implement an ambitious Open Science strategy. Anticipating these aspects can also facilitate collaborations within teams and consortia to make Open Science an opportunity rather than a constraint. This guide has a practical aim to help researchers take into account Open Science in each section of their full proposal, but it is not: A collection of ready-to-use sentences or paragraphs, to be copied and pasted into project proposals. A document to be applied in its entirety regardless of project specifics. A document validated by the ANR that replaces or contradicts the policy and rules presented by the ANR in its official documents. [i] https://anr.fr/fr/lanr-et-la-recherche/engagements-et-valeurs/la-science-ouverte/ [ii] https://www.enseignementsup-recherche.gouv.fr/cid132531/plan-national-pour-la-science-ouverte-discours-de-frederique-vidal.html
description: This technical note has been produced by the working group on Research Data of Couperin: https://www.couperin.org/services-et-prospective/open-access/gtao The French version of this note is available at: https://dx.doi.org/10.5281/zenodo.3741666 10.5281/zenodo.3749577
A LCMT1-PME-1 Methylation Equilibrium Controls Mitotic Spindle Size
Creators: name: Xiaoyu Xia
name: Ankur Gholkar
name: Senese, Silvia
name: Torres, Jorge Z
Publisher: name: Taylor & Francis
Year: 2015
Subjects: Cancer
Developmental Biology
Biological Sciences
Pharmacology
Cell Biology
Biochemistry

description: Leucine carboxyl methyltransferase-1 (LCMT1) and protein phosphatase methylesterase-1 (PME-1) are essential enzymes that regulate the methylation of the protein phosphatase 2A catalytic subunit (PP2AC). LCMT1 and PME-1 have been linked to the regulation of cell growth and proliferation, but the underlying mechanisms have remained elusive. We show here an important role for an LCMT1-PME-1 methylation equilibrium in controlling mitotic spindle size. Depletion of LCMT1 or overexpression of PME-1 led to long spindles. In contrast, depletion of PME-1, pharmacological inhibition of PME-1 or overexpression of LCMT1 led to short spindles. Furthermore, perturbation of the LCMT1-PME-1 methylation equilibrium led to mitotic arrest, spindle assembly checkpoint activation, defective cell divisions, induction of apoptosis and reduced cell viability. Thus, we propose that the LCMT1-PME-1 methylation equilibrium is critical for regulating mitotic spindle size and thereby proper cell division.
Agility in consumer retail: Sense-response alignment through the eyes of customers
Creators: name: Atapattu, Maura
name: Sedera, Darshana
name: Ravichandran, T.
Publisher: name: Swinburne
Year: 2024

description: In hyper competition, firms that are agile: sensing and responding better to customer requirements tend to be more successful and achieve supernormal profits. In spite of the widely accepted importance of customer agility, research is limited on this construct. The limited research also has predominantly focussed on the firm's perspective of agility. However, we propose that the customers are better positioned to determine how well a firm is responding to their requirements (aka a firm's customer agility). Taking the customers' stand point, we address the issue of sense and respond alignment in two perspectives-matching and mediating. Based on data collected from customers in a field study, we tested hypothesis pertaining to the two methods of alignment using polynomial regression and response surface methodology. The results provide a good explanation for the role of both forms of alignment on customer satisfaction. Implication for research and practice are discussed.
Resource Management in Next Generation MEC-Enabled Wireless Networks Using Machine Learning
Creators: name: Nguyen, Anne Catherine
Publisher: name: Université d'Ottawa | University of Ottawa
Year: 2024
Subjects: Resource Management
UAV
Reinforcement Learning
IoT
Wireless Network
Smart farm

description: With the help of unmanned aerial vehicles (UAV) and multi-access edge computing (MEC), the Internet of Things (IoT) can provide valuable insights for a smart farm. The IoT devices are installed across the farmland and they monitor the land by performing image classification tasks. Some of the tasks include identifying a fire, monitoring the farmland for pest infestations, and identifying the growth stages of the crops. These tasks must be done frequently to provide the latest information, and taking too long to complete these tasks will lead to irrecoverable damages. Each task has a predetermined deadline. To ensure these computationally heavy tasks are completed on time, the IoT devices can offload these tasks to nearby hovering UAVs to perform the tasks on their behalf. One significant limitation of IoT devices and UAVs is that these devices rely on batteries. To provide support for these nodes that have finite energy, a MEC server is added as another computing resource to further alleviate the task load. The wireless network is the cornerstone of the smart farm network, and it requires an algorithm to schedule the tasks. The decision-maker must consider the network's current energy capacity, computing resources, and deadlines for the tasks. This thesis considers a series of rule-based task scheduling algorithms as well as machine learning algorithms. The rule-based algorithms are based on round robin, or heuristics such as the UAV's current remaining energy and the networks' current computing queue. This thesis explores various reinforcement learning (RL) techniques namely Q-Learning, Deep Q-Learning (DQL), Deep Risk Sensitive (DRS), and DQL with Risk Quantification (RQ). These RL techniques jointly consider the energy and deadline limitations in their objective functions. The simulation results show that the machine learning algorithms significantly outperformed the rule-based algorithms. The RL techniques that employed deep learning had lower percentages of tasks that exceeded their deadlines. In addition, the deep neural networks DNN helped decrease the number of iterations required to achieve the optimal solution. This means that DQL and DRS were able to achieve the optimal solution faster than their tabular Q-Learning and Risk-Sensitive counterparts. In the simulation results, the majority of the tasks that did not meet their deadlines were fire detection tasks. This was because the fire tasks occurred frequently and had a shorter deadline. Unlike the other RL techniques, the RQ algorithm quantified the severity of each type of deadline violation and UAV battery levels in terms of damages. This enabled the agent to avoid actions that lead to severe damages. As a result, the RQ method was the only algorithm able to eliminate deadline violations that were fire detection tasks.
An examination of the mediating role for a nursing information system
Creators: name: Nguyen, Lemai
name: Wickramasinghe, Nilmini
Publisher: name: Swinburne
Year: 2024

description: This paper reports on findings from an examination of a nursing information system through the lens of Activity Theory. The information system was designed to support real-time nursing documentation in acute care hospital contexts. The objective was to enable superior nursing care to ensue by providing nurses with the opportunity to document patient care data into a tablet computer located at the patient bedside. The system was evaluated in a not-for-profit acute care hospital's wards during its implementation. Nurses' interactions with the system and their perceptions were collected and analysed through the lens of Activity Theory. The analysis highlighted nurses' positive attitude towards the system and identified potential mediation capabilities as well as areas for improvements. Activity Theory was found to be useful to examine the positive and potentially problematic aspects of this new nursing information system.
Влияние экстрактов папоротника и виноградной выжимки на качество безалкогольных напитков
Creators: name: Ферзаули Асет Исаевна
name: Ушакова Яна Владимировна
name: Хохлова Анна Александровна
name: Якуба Юрий Федорович
name: Щетинина Анна Сергеевна
Publisher: name: Пиво и напитки
Year: 2020
Subjects: анализ; выжимка; катионы; кислоты; напиток; состав

description: В статье приведены основные показатели качества безалкогольных напитков, полученных с применением экстракта папоротника Орляка и виноградной выжимки. Для определения химического состава безалкогольных напитков использовали методики капиллярного электрофореза, органолептические испытания. В результате аналитических исследований установлено, что внесение экстракта папоротника не вызывало повышения концентраций анионов хлорида, сульфата, увеличивало содержание катиона калия, кальция. Дозировка экстракта проявляла свойства эффективного консерванта, начиная с 0,025 %об. Эксперименты по дозировке экстракта виноградной выжимки красных сортов в различные рецептуры безалкогольного напитка привели к увеличению массовой концентрации катионов калия на 50–100 % от уровня исходного содержания. Содержание катионов кальция, натрия, магния изменялось незначительно, что согласовывалось с исходным содержанием катионов в экстракте виноградной выжимки. Отмечено появление в напитке ряда органических кислот, типичных для виноградного сырья, которые обладают биологической активностью и улучшают вкусовые характеристики. Окраска напитка приобретала слабый розовый оттенок. Добавление экстракта виноградной выжимки белого сорта в различных дозировках привело к увеличению массовой концентрации биологически ценного катиона калия до 3 раз от исходной. Тогда как концентрация остальных изучаемых катионов осталась практически без изменений. В готовом напитке обнаружены органические кислоты, характерные для виноградного сырья. Внесение экстракта из белого сорта винограда не приводило к изменению цвета безалкогольного напитка, улучшало вкусовые и ароматические характеристики. Таким образом, для повышения содержания биологически активных веществ в новых рецептурах безалкогольных напитков могут быть использованы экстракты из дикорастущего сырья и экстракты виноградной выжимки.
Применение пивной дробины в качестве источника альтернативной энергии
Creators: name: Житков Владимир Владимирович
name: Федоренко Борис Николаевич
Publisher: name: Пиво и напитки
Year: 2020
Subjects: биоэнергетика; биогаз; дробина; пивоварение; пищевая промышленность; энергетическая установка

description: В последние годы значительно возрос интерес к процессам производства биогаза. Это проявляется не только в возрастающем количестве планирующихся и строящихся биогазовых установок, но и в заинтересованности все большего числа сельскохозяйственных структур, коммунальных хозяйств, предприятий пищевой промышленности. Энергетическая отрасль уже не относится с такой осторожностью к децентрализации производства благодаря строительству биогазовых установок. Для пищевой промышленности технология производства биогаза предоставляет шанс дешевой утилизации органических отходов основного производства, а также использование биогаза на предприятии поможет не только сэкономить денежные средства, но и во многих случаях позволит получить дополнительную прибыль на «био-электроэнергии». Пивоваренное производство, генерирующее ежедневно достаточно большой объем отходов в виде отработанного зернового сырья, пивной дробины, относится к потенциальным бенефициарам возможностей переработки отходов в дополнительные производственные и коммерческие преимущества. На сегодняшний день уже существуют мощные, производящие большое количество электроэнергии установки, в которых также используется избыток тепловой энергии. На биогазе могут работать двигатели мощностью от нескольких десятков до сотен киловатт. По сравнению с ними производство тока из древесины, соломы и других видов сухой биомассы имеет смысл лишь на мегаваттных (свыше 1000 кВт) установках с паровыми турбинами. В настоящей статье рассмотрены все преимущества интенсивного использования пивной дробины в качестве сырья для процессов «BTE» (biomass-to-energy) включая процессы прямого сжигания и производства биогаза с целью выработки дополнительной электрической и тепловой энергии.
Исследование свойств лечебно-профилактического напитка на основе биологически активных компонентов молока и фруктового сока
Creators: name: Романенко Елена Семеновна
name: Сосюра Елена Алексеевна
name: Есаулко Наталия Александровна
name: Селиванова Мария Владимировна
name: Айсанов Тимур Солтанович
name: Мильтюсов Владимир Евгеньевич
name: Гаврилюк Владимир Витальевич
name: Герман Мария Сергеевна
Publisher: name: Пиво и напитки
Year: 2020
Subjects: безалкогольные напитки; молоко; сахароза; сывороточно-полисахаридная фракция; фруктовый сироп; фруктовый сок; функциональный напиток

description: В зависимости от вида используемого сырья можно добиться совершенно новых интересных вкусовых и качественных характеристик напитка. Так, в настоящее время все больший интерес проявляется к функциональным напиткам. Цель работы — получение функциональных напитков на основе сывороточно-полисахаридной фракции (СПФ) молока, яблочного и апельсинового соков. Научные исследования проводили на базе Ставропольского государственного аграрного университета (Ставропольский край, г. Ставрополь), в учебно-научной лаборатории технологии виноделия и продуктов питания из растительного сырья. Установлена марка пектина, необходимого для получения сывороточно-полисахаридной фракции для напитков. При производстве разработанного напитка необходимо использовать сывороточно-полисахаридную фракцию с пектином марки CJ 204. Для производства взбитых коктейлей в сети общественного питания используют СПФ, полученную пектином марки AM 201. Установлено соотношение компонентов при производстве напитка на основе СПФ и фруктового сиропа. Анализ динамики расслоения взбитой смеси показывает, что для производства взбитых коктейлей необходим следующий компонентный состав: сывороточно-полисахаридная фракция, полученная пектином марки AM 201 в количестве 88 %, сироп фруктовый должен быть в количестве 12 %. Время взбивания — 60 с. Установлено влияние многофакторной системы компонентов на органолептические и физико-химические показатели напитка. Определен их состав: СПФ в количестве 70 %, фруктовый сок в количестве 30 %, сахароза содержится в количестве 6 %. При таком количестве сока массовая доля сухих веществ СПФ в 100 г напитка составляет около 4,5 г, что соответствует медико-биологическим рекомендациям.
Group partition categories
Creators: name: Likeng, Samuel Nyobe
name: Savage, Alistair
Publisher: name: arXiv
Year: 2020
Subjects: subject: Representation Theory (math.RT)
subject: Category Theory (math.CT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: Primary 18M30, Secondary 20E22

description: To every group $G$ we associate a linear monoidal category $\mathcal{P}\mathit{ar}(G)$ that we call a group partition category. We give explicit bases for the morphism spaces and also an efficient presentation of the category in terms of generators and relations. We then define an embedding of $\mathcal{P}\mathit{ar}(G)$ into the group Heisenberg category associated to $G$. This embedding intertwines the natural actions of both categories on modules for wreath products of $G$. Finally, we prove that the additive Karoubi envelope of $\mathcal{P}\mathit{ar}(G)$ is equivalent to a wreath product interpolating category introduced by Knop, thereby giving a simple concrete description of that category.
description: 28 pages; v2: minor changes, published version
Соки и безалкогольные напитки: влияние на состояние зубов потребителя
Creators: name: Муслов Сергей Александрович
name: Арутюнов Сергей Дарчоевич
name: Хуршудян Сергей Азатович
name: Егорова Олеся Сергеевна
Publisher: name: Пиво и напитки
Year: 2020
Subjects: модуль Юнга
соки и безалкогольные напитки
твердость и шероховатость эмали зуба

description: В статье представлен обзор литературных данных по влиянию соков и безалкогольных напитков на механические свойства эмали зубов. Соки, нектары, морсы, сокосодержащие и безалкогольные напитки пользуются большой популярностью у потребителей. Данные по объемам производства (потребления) этих напитков показывают необходимость проведения исследований по воздействию соков и безалкогольных напитков на здоровье потребителя, четко разграничивая положительное и отрицательное влияние. Рассмотрены такие характеристики механических свойств, как модуль упругости, твердость (микрои нанотвердость) и шероховатость поверхности зубной эмали. Особое внимание представленных в статье исследований уделено влиянию цитрусовых соков, а также сильногазированного безалкогольного напитка типа «Кола» на механические свойства зубов. Установлено, что безалкогольные напитки, содержащие фосфорную кислоту, вызывают больший эффект смягчения зубной эмали, чем фруктовые соки, содержащие лимонную кислоту. При этом кислые напитки способствуют потере кальция. Описаны эксперименты, в которых была проверена способность искусственной слюны реминерализовать эмаль, обработанную напитком типа «Кола». Представлены результаты опытов по измерению твердости эмали по Кнупу in vitro, в которых установлено, что нанесение пасты, содержащей аморфный фосфат кальция (CPP-ACP), с непрерывным пополнением слюнообразного раствора в течение 48 ч способствует значительному отверждению эмали, смягченной сильногазированным безалкогольным напитком. Газированные и фруктовые безалкогольные напитки снижают механические свойства эмали, шероховатость эмали при этом возрастает. Потребление газированных напитков относится к одному из этиологических факторов, вызывающих эрозию зубов. Усилия по защите зубов от эрозивных веществ должны включать такую меру, как снижение потребления цитрусовых и газированных напитков.
Five-Dimensional Yang-Mills Black Holes in Massive Gravity's Rainbow
Creators: name: Aounallah, Houcine
name: Pourhassan, Behnam
name: Hendi, Seyed Hossein
name: Faizal, Mir
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we will analyze a five-dimensional Yang-Mills black hole solution in massive gravity's rainbow. We will also investigate the flow of such a solution with scale. Then, we will discuss the scale dependence of the thermodynamics for this black hole. Also, we study the criticality in the extended phase space by treating the cosmological constant as the thermodynamics pressure of this black hole solution. Moreover, we will use the partition function for this solution to obtaining corrections to the thermodynamics of this system and examine their key role on the behavior of corrected solutions.
description: 21 pages with 13 captioned figures
KOVIS: Keypoint-based Visual Servoing with Zero-Shot Sim-to-Real Transfer for Robotics Manipulation
Creators: name: Puang, En Yen
name: Tee, Keng Peng
name: Jing, Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: We present KOVIS, a novel learning-based, calibration-free visual servoing method for fine robotic manipulation tasks with eye-in-hand stereo camera system. We train the deep neural network only in the simulated environment; and the trained model could be directly used for real-world visual servoing tasks. KOVIS consists of two networks. The first keypoint network learns the keypoint representation from the image using with an autoencoder. Then the visual servoing network learns the motion based on keypoints extracted from the camera image. The two networks are trained end-to-end in the simulated environment by self-supervised learning without manual data labeling. After training with data augmentation, domain randomization, and adversarial examples, we are able to achieve zero-shot sim-to-real transfer to real-world robotic manipulation tasks. We demonstrate the effectiveness of the proposed method in both simulated environment and real-world experiment with different robotic manipulation tasks, including grasping, peg-in-hole insertion with 4mm clearance, and M13 screw insertion. The demo video is available at http://youtu.be/gfBJBR2tDzA
description: Accepted by IROS 2020
The LPM effect in sequential bremsstrahlung: nearly complete results for QCD
Creators: name: Arnold, Peter
name: Gorda, Tyler
name: Iqbal, Shahin
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The splitting processes of bremsstrahlung and pair production in a medium are coherent over large distances in the very high energy limit, which leads to a suppression known as the Landau-Pomeranchuk-Migdal (LPM) effect. We continue study of the case when the coherence lengths of two consecutive splitting processes overlap (which is important for understanding corrections to standard treatments of the LPM effect in QCD), avoiding soft-emission approximations. Previous work has computed overlap effects for double splitting $g \to gg \to ggg$. To make use of those results, one also needs calculations of related virtual loop corrections to single splitting $g \to gg$ in order to cancel severe (power-law) infrared (IR) divergences. This paper provides calculations of nearly all such processes involving gluons and discusses how to organize the results to demonstrate the cancellation. In the soft emission limit, our results reproduce the known double-log behavior of earlier authors who worked in leading-log approximation. We also present a first (albeit numerical and not yet analytic) investigation of sub-leading, single IR logarithms. Ultraviolet divergences appearing in our calculations correctly renormalize the coupling $α_{\rm s}$ in the usual LPM result for leading-order $g \to gg$.
description: 82 pages total; 24 figures. Change from v1: An erratum to eq. (A37) for the pole piece of sequential diagrams is now provided in a "Note added" section at the end of the main text
Multiplexed Supercell Metasurface Design and Optimization with Tandem Residual Networks
Creators: name: Yeung, Christopher
name: Tsai, Ju-Ming
name: King, Brian
name: Pham, Benjamin
name: Ho, David
name: Liang, Julia
name: Knight, Mark W.
name: Raman, Aaswath P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Complex nanophotonic structures hold the potential to deliver exquisitely tailored optical responses for a range of applications. Metal-insulator-metal (MIM) metasurfaces arranged in supercells, for instance, can be tailored by geometry and material choice to exhibit a variety of absorption properties and resonant wavelengths. With this flexibility, however, comes a vast space of design possibilities that classical design paradigms struggle to effectively navigate. To overcome this challenge, here we demonstrate a tandem residual network approach to efficiently generate multiplexed supercells through inverse design. By using a training dataset with several thousand full-wave electromagnetic simulations in a design space of over three trillion possible designs, the deep learning model can accurately generate a wide range of complex supercell designs given a spectral target. Beyond inverse design, the presented approach can also be used to explore the structure-property relationships of broadband absorption and emission in such supercell configurations. Thus, this study demonstrates the feasibility of high-dimensional supercell inverse design with deep neural networks that is applicable to complex nanophotonic structures composed of multiple subunit elements that may exhibit coupling.
Breaking BEC: Quantum evolution of unstable condensates
Creators: name: Kovtun, A.
name: Zantedeschi, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we numerically explore the quantum behavior of a classically unstable relativistic Bose-Einstein condensate (BEC). The main goal is to study the phenomenon of so-called quantum break time which amounts to a significant departure from a semiclassical mean-field description. It has been suggested previously that the existence of Lyapunov instability is crucial for a fast quantum breaking, chaos, and scrambling. In order to clarify the issue, we work within the 2-PI effective action formalism and introduce a simple and very widely applicable dynamical criterion for identifying the timescale of quantumbreaking. We indeed observe that the fast quantum break time is controlled by the Lyapunov exponent of the unstable BEC.
INFORMATIKA VA AXBOROT TEXNOLOGIYALARINING HAYOTIMIZDAGI ROLI
Creators: name: Normurodova, Sadoqat
name: Jumaboyeva, Durdona
name: Asadova, Shaxina
Publisher: name: Zenodo
Year: 2025

description: Zamonaviy o‘quv mashg‘ulotlarini tashkil etish va o‘tkazish metodologiyasida innovatsion pedagogik yondoshuvlarning joriy etilishi ta’lim tizimini takomillashtirishga katta hissa qo‘shadi. O‘quv jarayonida masofaviy ta’lim, interaktiv platformalar, raqamli resurslar, mobil ilovalar va virtual laboratoriyalar kabi zamonaviy texnologiyalardan foydalanish orqali o‘quvchilarning faolligi oshiriladi, ularning bilim olishga bo‘lgan qiziqishlari kuchayadi, mustaqil fikrlash va amaliy ko‘nikmalarini rivojlantirishga yordam beradi. Tadqiqotda shuni ko‘rsatish mumkinki, o‘quvchilarning o‘zlashtirish darajasini oshirish va ularning ta’limga bo‘lgan motivatsiyasini kuchaytirish uchun yangi texnologiyalar va interaktiv metodlarni qo‘llash samarali.
A new method for fast chitin extraction from shells of crab, crayfish and shrimp
Creators: name: Kaya, Murat
name: Baran, Talat
name: Karaarslan, Muhsin
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Biological Sciences
subject: Chemistry
subject: Earth and Environmental Sciences
subject: Biotechnology
subject: Molecular Biology
subject: Cell Biology
subject: Microbiology
subject: FOS: Biological sciences
subject: Biochemistry
subject: Biophysics

description: A new method for quick chitin isolation from the shells of crab, crayfish and shrimp is described. The main difference between the new method and the conventional method is two sodium hypochlorite (NaClO) treatments for 10 min each before the processes of demineralisation and deproteinisation. After the NaClO treatment, only 15 min is adequate for the demineralisation and 20 min for the deproteinisation processes. Newly extracted chitin from crab, crayfish and shrimp shells and commercial chitin were characterised using FT-IR, TGA, X-ray diffractometry and elemental analysis. From the results, it was observed that the chitins isolated with the new method and the commercial chitin had almost the same physicochemical properties. The advantage of the new method compared to traditional methods is the relatively rapid chitin extraction. When compared to the traditional chitin extraction method, the proposed method appears to be promising regarding its time and energy saving nature.
Интенсивный способ совмещенного затирания-фильтрования в производстве пива с раздельной обработкой злаков
Creators: name: Хаев Олег Валериевич
name: Качмазов Геннадий Созырович
name: Туаева Альбина Юрьевна
Publisher: name: Пиво и напитки
Year: 2020
Subjects: затирание
фильтрование
зернопродукты
промывная вода
осахаривание
ферментный препарат

description: В производственных условиях исследована возможность раздельного затирания несоложеных зернопродуктов и солода на инновационной установке приготовления пивного сусла с объединением стадий затирания и фильтрования в одном аппарате с вращающимся внутренним сетчатым барабаном. Затираемое сырье помещают в водопроницаемые пакеты, которые вращаются вместе с барабаном. В течение 1 ч происходит перемешивание дробленых солода и(или) несоложеных зернопродуктов с водой и двукратное промывание дробины водой. Первое сусло, первая и вторая промывная вода поступают в сусловарочный аппарат для доосахаривания крахмала. После чего следует кипячение сусла с хмелем, его охлаждение, сбраживание, розлив по традиционной технологии. Впервые на оборудовании такого типа проведено затирание несоложеных ячменя, пшеницы, овса отдельно от основной массы солода. Применяли зернопродукты в соотношении 9 частей несоложеных материалов и 1 часть солода с добавлением ферментного препарата. В бродильном аппарате сбраживалось сусло пяти варок: одной, полученной затиранием с несоложеными материалами, и четырех из солода. Анализ продукта из 100 % солода и полученном при замене солода несоложеным материалом показал удовлетворительное накопление спирта в результате брожения, некоторое повышение вязкости затора, удовлетворительные органолептические характеристики пива. Инновационный совмещенный способ затирания-фильтрования позволяет получить пиво удовлетворительного качества как при использовании 100 % солода, так и с частичной заменой (в наших экспериментах 18 %) несоложеными материалами.
The power of connections: mapping the behaviour of healthcare networks
Creators: name: Clarke, Jonathan Martin
Publisher: name: Imperial College London
Year: 2020

description: As the National Health Service (NHS) in England enters its eighth decade, it faces unprecedented levels of demand for care from a patient population with increasingly complex needs. In an attempt to address these challenges, whether through centralisation of specialist services, or the introduction of Integrated Care Systems, the current organisational structure of the NHS is in transition. This thesis takes routinely collected administrative healthcare data in the form of Hospital Episode Statistics from 2011 to 2018 and applies a range of emerging network analysis and machine learning techniques to investigate the dynamics of the NHS as a complex system. Undirected patient-sharing networks based on 130 million hospital presentations from 2013-15 were found to connect 98% of all possible pairs of hospitals, but were highly clustered and were subdivided by Louvain Modularity into ten smaller patient-sharing communities. Within these patient-sharing communities, patients attended different hospitals on successive occasions over 14 million times. The Herfindahl-Hirschman index was used to identify regional differences in hospital market sizes and identified dilute healthcare markets within conurbations and areas in close proximity to multiple care providers. Random forest classifiers and alternative-specific conditional logit models were developed to predict the choices patients make in attending hospital for emergency care and are found to predict patient choice correctly on up to 87% of occasions. Markov Multiscale Community Detection, an unsupervised network clustering technique, is applied to identify data-driven catchment areas for planned orthopaedic care nationally and across primary and secondary care in conurbations. Collectively, these methods provide policymakers with a new understanding of how patients interact with hospitals, how those hospitals are connected to one another and how the broader organisational structure of the NHS may be tailored to match the complex relationships that exist between patients and providers.
Cosmological implications of the hydrodynamical phase of group field theory
Creators: name: Gabbanelli, Luciano
name: De Bianchi, Silvia
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this review we focus on the main cosmological implications of the Group Field Theory approach, according to which an effective continuum macroscopic dynamics can be extracted from the underlying formalism for quantum gravity. Within this picture what counts is the collective behaviour of a large number of quanta of geometry. The resulting state is a condensate-like structure made of "pre-geometric" excitations of the Group Field Theory field over a no-space vacuum. Starting from the kinematics and dynamics, we offer an overview of the way in which Group Field Theory condensate cosmology treats solutions for the homogeneous and isotropic universe. These solutions including a bounce, share with other quantum cosmological approaches the resolution of the singularity characterizing general relativity. Contrary to what is usually done in quantum cosmology, in GFT cosmology no preliminary symmetry reduction is needed for this purpose. We conclude with a discussion of the limits and future perspectives of the Group Field Theory approach.
description: 34 pages
Design and implementation in USRP of a preamble-based synchronizer for OFDM systems
Creators: name: Herrera-Bustamante, José
name: Rodríguez-Ludeña, Vanessa
name: Correa-Mena, A. G.
name: Barragán-Guerrero, Diego
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The Orthogonal Frequency Division Multiplexing (OFDM) is one of the most widely adopted schemes in wireless technologies such as Wi-Fi and LTE due to its high transmission rates, and the robustness against Intersymbol Interference (ISI). However, OFDM is highly sensitive to synchronism errors, which affects the orthogonality of the carriers. We analyzed several synchronization algorithms based on the correlation of the preamble symbols through the implementation in Software-Defined Radio (SDR) using the Universal Software Radio Peripheral (USRP). Such an implementation was performed in three stages: frame detection, comparing the autocorrelation output and the average power of the received signal; time synchronism, where the cross-correlation based on the short and long preamble symbols was implemented; and the frequency synchronism, where the Carrier Frequency Offset (CFO) added by the channel was detected and corrected. The synchronizer performance was verified through the USRP implementation. The results serve as a practical guide to selecting the optimal synchronism scheme and show the versatility of the USRP to implement digital communication systems efficiently.
description: 6 pages, to be presented at the ANDESCON - Biannual Technical and Scientific Conference of the Andean Council of the IEEE 2020
Оценка биохимического состава плодов кизила как сырья для производства дистиллятов
Creators: name: Песчанская Виолетта Александровна
name: Дубинина Елена Васильевна
name: Крикунова Людмила Николаевна
name: Трофимченко Владимир Александрович
Publisher: name: Пиво и напитки
Year: 2020
Subjects: биохимический состав сока; органические кислоты; плоды культурного и дикорастущего кизила; сахара

description: Расширение ассортимента спиртных напитков на основе фруктовых дистиллятов на отечественном алкогольном рынке за счет использования новых видов плодового сырья предусматривает оценку их биохимического состава. Плоды кизила (Córnus mas) — один из потенциальных видов фруктового сырья для получения дистиллятов и напитков из них. Плоды кизила, как культурного, так и дикорастущего обладают сильным приятным ароматом, который усиливается при тепловой обработке. Это свойство кизила позволит получать продукцию с оригинальными органолептическими характеристиками. В качестве объектов исследования в работе использовали три образца свежих плодов культурных сортов и два образца плодов дикорастущего кизила, урожая 2019 г. Регион произрастания — предгорные районы Кабардино-Балкарии. Оценку биохимического состава плодов проводили на основании результатов определения в соке массовой доли растворимых сухих веществ, массовой концентрации сахаров, органических кислот, фенольных веществ и величины активной кислотности. Установлено, что по сравнению с другими видами фруктового сырья плоды кизила характеризуются более высоким содержанием титруемых кислот — от 27,4 до 32,4 г/дм3. Массовая концентрация фенольных веществ в плодах кизила составила 1,2–1,6 г/дм3, что, в среднем, в 1,5 раза выше, чем в сливах и абрикосах. Сахара в плодах кизила представлены преимущественно моносахаридами — глюкозой и фруктозой (98,9 % от суммы). Установлено, что в соке плодов кизила основная органическая кислота — яблочная, составляющая более 70 % от суммы свободных органических кислот. На основании результатов исследования биохимического состава плодов культурного и дикорастущего кизила сделан вывод о возможности использования кизила в производстве фруктовых дистиллятов. Установленные особенности биохимического состава плодов кизила необходимо учитывать при разработке режимных параметров подготовки его к дистилляции.
Enhanced existence time of solutions to evolution equations of Whitham type
Creators: name: Ehrnström, Mats
name: Wang, Yuexun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We show that Whitham type equations u_t + u u_x -L u_x = 0, where L is a general Fourier multiplier operator of order α\in [-1,1], α\neq 0, allow for small solutions to be extended beyond their expected existence time. The result is valid for a range of quadratic dispersive equations with inhomogeneous symbols in the dispersive range given by α, and should be extendable to other equations of the same relative dispersive strength.
Disruption of sphingolipid metabolism augments ceramide-induced autophagy in preeclampsia
Creators: name: Melland-Smith, Megan
name: Ermini, Leonardo
name: Chauvin, Sarah
name: Craig-Barnes, Hayley
name: Tagliaferro, Andrea
name: Todros, Tullia
name: Post, Martin
name: Caniggia, Isabella
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Developmental Biology
subject: Mathematics
subject: FOS: Mathematics
subject: Biological Sciences
subject: Meta Science
subject: Earth and Environmental Sciences
subject: Physiology
subject: FOS: Biological sciences
subject: Neuroscience
subject: Genetics
subject: Cell Biology
subject: Microbiology
subject: Biochemistry

description: Bioactive sphingolipids including ceramides are involved in a variety of pathophysiological processes by regulating cell death and survival. The objective of the current study was to examine ceramide metabolism in preeclampsia, a serious disorder of pregnancy characterized by oxidative stress, and increased trophoblast cell death and autophagy. Maternal circulating and placental ceramide levels quantified by tandem mass spectrometry were elevated in pregnancies complicated by preeclampsia. Placental ceramides were elevated due to greater de novo synthesis via high serine palmitoyltransferase activity and reduced lysosomal breakdown via diminished ASAH1 expression caused by TGFB3-induced E2F4 transcriptional repression. SMPD1 activity was reduced; hence, sphingomyelin degradation by SMPD1 did not contribute to elevated ceramide levels in preeclampsia. Oxidative stress triggered similar changes in ceramide levels and acid hydrolase expression in villous explants and trophoblast cells. MALDI-imaging mass spectrometry localized the ceramide increases to the trophophoblast layers and syncytial knots of placentae from pregnancies complicated by preeclampsia. ASAH1 inhibition or ceramide treatment induced autophagy in human trophoblast cells via a shift of the BOK-MCL1 rheostat toward prodeath BOK. Pharmacological inhibition of ASAH1 activity in pregnant mice resulted in increased placental ceramide content, abnormal placentation, reduced fetal growth, and increased autophagy via a similar shift in the BOK-MCL1 system. Our results reveal that oxidative stress-induced reduction of lysosomal hydrolase activities in combination with elevated de novo synthesis leads to ceramide overload, resulting in increased trophoblast cell autophagy, and typifies preeclampsia as a sphingolipid storage disorder.
Supplementary methods and results from Feather chemicals contain information about the major histocompatibility complex in a highly scented seabird
Creators: name: Jennings, Sarah L.
name: Hoover, Brian A.
name: Wa Sin, Simon Yung
name: Ebeler, Susan E.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Ecology
subject: 60801 Animal Behaviour

description: Provides additional methodological details and results not included in the main manuscript
A LCMT1-PME-1 methylation equilibrium controls mitotic spindle size
Creators: name: Xiaoyu Xia
name: Ankur Gholkar
name: Senese, Silvia
name: Torres, Jorge Z
Publisher: name: Taylor & Francis
Year: 2015
Subjects: Cancer
Developmental Biology
Biological Sciences
Pharmacology
Cell Biology
Biochemistry

description: Leucine carboxyl methyltransferase-1 (LCMT1) and protein phosphatase methylesterase-1 (PME-1) are essential enzymes that regulate the methylation of the protein phosphatase 2A catalytic subunit (PP2AC). LCMT1 and PME-1 have been linked to the regulation of cell growth and proliferation, but the underlying mechanisms have remained elusive. We show here an important role for an LCMT1-PME-1 methylation equilibrium in controlling mitotic spindle size. Depletion of LCMT1 or overexpression of PME-1 led to long spindles. In contrast, depletion of PME-1, pharmacological inhibition of PME-1 or overexpression of LCMT1 led to short spindles. Furthermore, perturbation of the LCMT1-PME-1 methylation equilibrium led to mitotic arrest, spindle assembly checkpoint activation, defective cell divisions, induction of apoptosis and reduced cell viability. Thus, we propose that the LCMT1-PME-1 methylation equilibrium is critical for regulating mitotic spindle size and thereby proper cell division.
Effects of feeding outer bran fraction of rice on lipid accumulation and fecal excretion in rats
Creators: name: Ijiri, Daichi
name: Nojima, Tsutomu
name: Kawaguchi, Mana
name: Yamauchi, Yoko
name: Fujita, Yoshikazu
name: Ijiri, Satoru
name: Ohtsuka, Akira
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Science Policy
subject: Ecology
subject: FOS: Biological sciences
subject: Chemistry
subject: Physiology
subject: Molecular Biology
subject: Cell Biology
subject: Biochemistry

description: Outer bran fraction of rice (OBFR) contains higher concentrations of crude fiber, γ-oryzanol, and phytic acid compared to whole rice bran (WRB). In this study, we examined the effects of feeding OBFR on lipid accumulation and fecal excretion in rats. Twenty-one male rats at seven-week-old were divided into a control group and two treatment groups. The control group was fed a control diet, and the treatment groups were fed OBFR- or WRB-containing diet for 21 days. There was no significant difference in growth performance. Feeding OBFR diet increased fecal number and weight accompanied by increased fecal lipid content, while it did not affect mRNA expressions encoding lipid metabolism-related protein in liver. In addition, feeding OBFR-diet decreased the abdominal fat tissue weight and improved plasma lipid profiles, while WRB-containing diet did not affect them. These results suggested that feeding OBFR-diet might prevent lipid accumulation via enhancing fecal lipid excretion in rats.