cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Detection of spark discharges in an agitated Mars dust simulant isolated from foreign surfaces
Creators: name: Harper, Joshua Méndez
name: Dufek, Josef
name: McDonald, George
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Numerous laboratory experiments, starting in the Viking Lander era, have reported that frictional interactions between Martian analog dust grains can catalyze electrostatic processes (i.e. triboelectrification). Such findings have been cited to suggest that Martian dust devils and dust storms may sustain lightning storms, glow discharges, and other complex electrostatic phenomena. However, in many cases (if not most), these experiments allowed Martian dust simulant grains to contact foreign surfaces (for instance, the wall of an environmental chamber or other chemically dissimilar particles). A number of authors have noted that such interactions could produce charging that is not representative of processes occurring near the surface of Mars. In this work, we experimentally characterize the triboelectrification of a Martian dust simulant resulting from both isolated particle-particle collisions and particle-wall collisions under a simulated Martian environment. For the first time, we report the direct detection of spark discharges under Martian surface conditions in a flow composed solely of natural basalt and isolated from man-made surfaces. The charge densities acquired by the fluidized grains are found to be of order 10^-6 Cm^-2 (in excess of the theoretical maximum charge density for the near-surface Martian environment). Additionally, we demonstrate that the interaction of simulant particles with experimental walls can modulate the polarity of spark discharges. Our work supports the idea that small-scale spark discharges may indeed be present in Martian granular flows and may be qualitatively similar to small-scale discharges in terrestrial volcanic vents.
Necessity and Model of the Nationalization of Rural Elites
Creators: name: Yu, Yang
name: Yu, Yang
Publisher: name: Unknown
Year: 2009
Subjects: subject: Labor and Human Capital
subject: Rural elites in China
subject: Nationalization of elites
subject: Necessity
subject: Model

description: Concept of rural elite in China is introduced. And rural elites are classified into governing elite, economic elite, social elite and cultural elite with phenomenon of overlapping among the four types. Definitions of science nationalization and elite politicalization are introduced. Based on the review of previous research results, meaning of elite nationalization is defined: the state guides elites to join in its operation by means of controlling the elites’ occupation, promoting their status, improving their warfare, assimilating their thought and so on, so that elites may serve the political objectives of the state. Predicaments of rural elites are analyzed. Firstly, some rural governing elites and economic elites are high combined, or they use each other to exchange power and money. Secondly, the state pays little attention to the nationalization degree of rural social elite and cultural elite. Thirdly, the rights of economic elites in rural areas are illegally deprived by governing elites when doing business. Based on this, this paper points out that elite nationalization in rural areas is the inevitable choice of promoting rural economic and social development. Concrete models of elite nationalization in rural areas are discussed. Firstly, give certain political status to rural economic elite and strengthen the way of guidance. Secondly, improve the economic income and strengthen the supervision and education on rural governing elite. Thirdly, give certain political status to rural social elite and improve their ability to become rich. Fourthly, improve the economic income and political status of rural cultural elite and offer them opportunities for upward mobility.
Supplemental Figures from The architecture of co-morbidity networks of physical and mental health conditions in military veterans
Creators: name: Alexander-Bloch, Aaron F.
name: Raznahan, Armin
name: Shinohara, Russell T.
name: Mathias, Samuel R.
name: Harini Bathulapalli
name: Ish P. Bhalla
name: Goulet, Joseph
name: Satterthwaite, Theodore
name: Bassett, Danielle S.
name: Glahn, David C.
name: Brandt, Cynthia A.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: 90303 Biomedical Instrumentation
subject: FOS: Medical engineering
subject: 10199 Pure Mathematics not elsewhere classified
subject: FOS: Mathematics
subject: 80702 Health Informatics
subject: FOS: Media and communications
subject: 80201 Analysis of Algorithms and Complexity
subject: FOS: Computer and information sciences

description: Supplemental Figure 1-3
Gated Recurrent Context: Softmax-free Attention for Online Encoder-Decoder Speech Recognition
Creators: name: Lee, Hyeonseung
name: Kang, Woo Hyun
name: Cheon, Sung Jun
name: Kim, Hyeongju
name: Kim, Nam Soo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Recently, attention-based encoder-decoder (AED) models have shown state-of-the-art performance in automatic speech recognition (ASR). As the original AED models with global attentions are not capable of online inference, various online attention schemes have been developed to reduce ASR latency for better user experience. However, a common limitation of the conventional softmax-based online attention approaches is that they introduce an additional hyperparameter related to the length of the attention window, requiring multiple trials of model training for tuning the hyperparameter. In order to deal with this problem, we propose a novel softmax-free attention method and its modified formulation for online attention, which does not need any additional hyperparameter at the training phase. Through a number of ASR experiments, we demonstrate the tradeoff between the latency and performance of the proposed online attention technique can be controlled by merely adjusting a threshold at the test phase. Furthermore, the proposed methods showed competitive performance to the conventional global and online attentions in terms of word-error-rates (WERs).
АБДУЛАЗИЗХОН МАДРАСАСИ ВА БУХОРО ЁДГОРЛИКЛАРИДА ЗООМОРФИЗМ
Creators: name: Қобилов, Шохрухмирзо
Publisher: name: Zenodo
Year: 2024

description: Исломгача бўлган Бухоро тарихий ёдгорликларида инсон, ҳайвон, қуш тасвири ва бошқа шаклларнинг безак элементларини кўплаб учратиш мумкин. Масалан, биргина Варахша саройи харобаларида ўттизга яқин шундай турдаги деворий суратлар топиб ўрганилган. Шунингдек, Пойкент вайроналаридан топилган калонналарнинг пастги таянч қисмида товус шакллари бутунлигича сақланган. Варахша тасвирлари ганчдан Пойкент тасвирлари эса лойдан ишланганлиги билан ажралиб туради. Аммо воҳанинг кейинги даврлардаги меъморчилик услубида зооморфизм элементлари сиқиб чиқарилади.
title: Методика расчета на устойчивость к прогрессирующему обрушению пространственного каркаса монолитного железобетонного здания
Creators: name: ELS IPR BOOKS
Publisher: name: Казанский государственный архитектурно-строительный университет, ЭБС АСВ
Year: 2019

description: В учебно-методическом пособии даны требования и рекомендации к выполнению расчетной работы по дисциплинам «Теория и практика расчета строительных конструкций», «Строительная механика». Приведен обучающий пример с применением программного комплекса САПФИР и ЛИРА-САПР (программный комплекс «Академик сет 2019») для расчета на устойчивость к прогрессирующему обрушению пространственного каркаса монолитного железобетонного здания, позволяющий студентам освоить интерфейс программы, особенности компьютерного моделирования и анализа результатов расчетов. Представлен пример оформления пояснительной записки. Учебно-методическое пособие рекомендовано для студентов архитектурных и строительных специальностей, направлений подготовки 07.03.01, 08.03.01, 08.04.01, 08.05.01, 09.03.02 при выполнении расчетных работ, курсовых и выпускных квалификационных работ.
Supersymmetric black rings and three-charge supertubes
Creators: name: Elvang, Henriette
name: Emparan, Roberto
name: Mateos, David
name: Reall, Harvey S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present supergravity solutions for 1/8-supersymmetric black supertubes with three charges and three dipoles. Their reduction to five dimensions yields supersymmetric black rings with regular horizons and two independent angular momenta. The general solution contains seven independent parameters and provides the first example of non-uniqueness of supersymmetric black holes. In ten dimensions, the solutions can be realized as D1-D5-P black supertubes. We also present a worldvolume construction of a supertube that exhibits three dipoles explicitly. This description allows an arbitrary cross-section but captures only one of the angular momenta.
description: 59 pages, 6 figures; v2: minor corrections
Regional Sustainable Development of Rural Areas Based on HDI - a case of Jilin Province, China
Creators: name: Wang, Xiao-Yan
name: Chen, Li-Ming
name: Wang, Xiao-Yan
name: Chen, Li-Ming
Publisher: name: Unknown
Year: 2009
Subjects: subject: Community/Rural/Urban Development
subject: Research Methods/ Statistical Methods
subject: Resource /Energy Economics and Policy
subject: Human development index (HDI)
subject: Rural area
subject: Sustainable development
subject: Entropy weight
subject: China

description: This paper introduces the connotation of Human Development Index (HDI) and its dimensional indices, as well as the HDI comprehensive evaluation method based on entropy weight. And the specific formula and steps for calculation are put forward. This paper also selects the HDI dimensional indices (life expectancy index, education index and GDP index), and constructs the evaluation index system of regional sustainable development. Based on the field investigation on Yushu, Jiutai and Yongji in Jilin Province, relevant data of HDI dimensional indices are collected. According to the comprehensive evaluation method based on entropy weight, sustainable development levels of the three typical rural areas in Jilin Province are evaluated. Result shows that the descending order of the sustainable development status of rural areas is Yongji, Jiutai and Yushu, indicating that the sustainable development levels are relatively backward. Educational levels of the three areas (counties) have a relatively large gap; and the quality of secondary education in rural areas remains to be improved. Ageing of population is growing in Jilin Province, and life expectancy of the three areas (counties) rises sharply. There are small differences among the national economic development of the three areas (counties) with the descending order of per capita GDP index being Yongji, Yushu and Jiutai. Based on this, relevant policy recommendations are put forward. Firstly, improve the continued investment in basic and secondary education in rural areas with practical measures. Secondly, strengthen the rural health care and welfare protection in rural areas in order to improve the living standard of rural residents. Thirdly, while maintaining rapid economic growth, we should pay attention to the population factors and strive to the steady growth of per capita economic level.
Electronic supplementary material from Nutrients and warming interact to force mountain lakes into unprecedented ecological states
Creators: name: Oleksy, Isabella A.
name: Baron, Jill S.
name: Leavitt, Peter R.
name: Spaulding, Sarah A.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Environmental Science
subject: Ecology
subject: FOS: Biological sciences
subject: 60114 Systems Biology

description: File contains study area description, methodological details, and 2 supplementary figures
title: Экологические и медико-биологические основы техносферной безопасности в строительстве. Ч.2. Экологические и биологические основы техносферной безопасности в строительстве
Creators: name: ELS IPR BOOKS
Publisher: name: Казанский государственный архитектурно-строительный университет, ЭБС АСВ
Year: 2018

description: В учебном пособии изложены основы физиологических механизмов процессов адаптации человека к неблагоприятным условиям среды обитания, отмечены основные виды воздействия опасных экологических и производственных факторов и их влияние на организм человека. Рассмотрены отдельные аспекты токсикометрии и приведены токсикологические характеристики широкого ряда соединений, применяемых в строительной отрасли, а также основные виды профессиональных заболеваний в строительной отрасли. Книга предназначена для бакалавров и магистров высших строительных учебных заведений, представляет интерес для преподавателей. Некоторые разделы учебного пособия могут представлять интерес для широкого круга читателей.
Application of Just-Noticeable Difference in Quality as Environment Suitability Test for Crowdsourcing Speech Quality Assessment Task
Creators: name: Naderi, Babak
name: Möller, Sebastian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Multimedia (cs.MM)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Crowdsourcing micro-task platforms facilitate subjective media quality assessment by providing access to a highly scale-able, geographically distributed and demographically diverse pool of crowd workers. Those workers participate in the experiment remotely from their own working environment, using their own hardware. In the case of speech quality assessment, preliminary work showed that environmental noise at the listener's side and the listening device (loudspeaker or headphone) significantly affect perceived quality, and consequently the reliability and validity of subjective ratings. As a consequence, ITU-T Rec. P.808 specifies requirements for the listening environment of crowd workers when assessing speech quality. In this paper, we propose a new Just Noticeable Difference of Quality (JNDQ) test as a remote screening method for assessing the suitability of the work environment for participating in speech quality assessment tasks. In a laboratory experiment, participants performed this JNDQ test with different listening devices in different listening environments, including a silent room according to ITU-T Rec. P.800 and a simulated background noise scenario. Results show a significant impact of the environment and the listening device on the JNDQ threshold. Thus, the combination of listening device and background noise needs to be screened in a crowdsourcing speech quality test. We propose a minimum threshold of our JNDQ test as an easily applicable screening method for this purpose.
description: This paper has been accepted for publication in the 2020 Twelfth International Conference on Quality of Multimedia Experience (QoMEX)
The main issues of land consolidation in Hungary, with special regard to the voluntary exchange of lands
Creators: name: Alvincz, Jozsef
name: Kacz, Karoly
name: Koltai, Judit Petra
name: Alvincz, Jozsef
name: Kacz, Karoly
name: Koltai, Judit Petra
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Farm Management
subject: Land Economics/Use
subject: land ownership
subject: land structure
subject: land consolidation
subject: land policy

description: Land ownership and company structure is much more stabile in the agriculture of West- European countries than in Hungary. Therefore the lack of established land policy, land consolidation and farm regulation play the key role on the Hungarian agriculture’s ”map of problems”. These are strongly correlated and tasks urgently to be solved. These measures could help to raise the international competitiveness of Hungarian agriculture, positively influence the population supporting and keeping ability of the agricultural sector, and enable an environmentally sound management. The question of land consolidation – considering the legal possibilities regarding the voluntary exchange of lands – has not moved from standstill since the birth of the Land Act 14 years ago. Whereas a general land consolidation would have a lot of advantages; which would go as far as the establishment of viable farming units, expansion of rural employment facilities, cost reduction, improvement of profitability, stabilization of the corporate system of agriculture and land market.
Supplementary tables and figures from Community-level reorganizations following migratory pollinator dynamics along a latitudinal gradient
Creators: name: Magrach, Ainhoa
name: Lara, Carlos
name: Luna, Ubaldo Márquez
name: Díaz-Infante, Sergio
name: Parker, Ingrid
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Environmental Science
subject: Ecology
subject: FOS: Biological sciences
subject: Plant Biology

description: Predicting how communities re-arrange in response to changes in species composition remains a key challenge in ecology. Migratory species, which enter and leave communities across latitudinal gradients, offer us a unique opportunity to evaluate community-and species-level responses to a shift in community composition. We focused on a migratory hummingbird and the communities that host it along a latitudinal and species diversity gradient. Our results show higher niche overlap in more diverse communities, allowing resident species to compensate for the loss of the migrant in providing pollination services. Contrastingly, in less diverse communities, the migrant behaves as a specialist, monopolizing abundant resources. In its absence, its role is not fully covered by resident species, resulting in a decrease in the fruit set of the migrant's preferred plant species. These results help us understand the potential impacts of biodiversity loss and have important implications for community persistence given expected changes in the migratory behaviours of some species.
On local boundary CFT and non-local CFT on the boundary
Creators: name: Rehren, K. -H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81R15; 81T05; 81T40

description: The holographic relation between local boundary conformal quantum field theories (BCFT) and their non-local boundary restrictions is reviewed, and non-vacuum BCFT's, whose existence was conjectured previously, are constructed.
description: 16 pages. Contribution to "Rigorous Quantum Field Theory", Symposium in honour of J. Bros, Paris, July 2004. Based on joint work math-ph/0405067 with R. Longo
Design and Implementation of a General Decision-making Model in RoboCup Simulation
Creators: name: Wang, Changda
name: Chen, Xianyi
name: Zhao, Xibin
name: Ju, Shiguang
Publisher: name: arXiv
Year: 2004
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The study of the collaboration, coordination and negotiation among different agents in a multi-agent system (MAS) has always been the most challenging yet popular in the research of distributed artificial intelligence. In this paper, we will suggest for RoboCup simulation, a typical MAS, a general decision-making model, rather than define a different algorithm for each tactic (e.g. ball handling, pass, shoot and interception, etc.) in soccer games as most RoboCup simulation teams did. The general decision-making model is based on two critical factors in soccer games: the vertical distance to the goal line and the visual angle for the goalpost. We have used these two parameters to formalize the defensive and offensive decisions in RoboCup simulation and the results mentioned above had been applied in NOVAURO, original name is UJDB, a RoboCup simulation team of Jiangsu University, whose decision-making model, compared with that of Tsinghua University, the world champion team in 2001, is a universal model and easier to be implemented.
Calculation of Minimum Speed of Projectiles Under Linear Resistance Using The Geometry of The Velocity Space
Creators: name: Pispinis, Dimitrios
Publisher: name: American University of Bahrain
Year: 2024
Subjects: classificationCode: 49
subject: Mathematical sciences

description: AbstractWe look at the problem of the minimum speed of projectiles in a constant gravitational field. In the absence of resistance, the problem may be studied in the frame of a high school curriculum. One needs only Newton’s laws and a minimum amount of analytic geometry to compute the orbit, which turns out to be parabolic. Furthermore, in case the projectile is launched upwards, employing the theorem of conservation of mechanical energy we conclude that the minimum speed occurs at the highest point.
In the presence of resistance, the system is dissipative and hence, the previous tools are not available. We focus at the case where the resisting force is linear in speed and opposing the velocity vector. It has been observed in numerical experiments that the minimum speed, if any, occurs when the projectile is on the way down, after having achieved the maximum height. We propose a presentation of the solution to this problem using the geometry of the velocity space. As a basic tool, we apply an old idea introduced by Hamilton and Maxwell, the hodograph of motion.
It turns out that the hodograph of motion in this case is a straight line. This fact allows us to describe the values of initial speed and launching angles that will result in an orbit with or without minimum speed. In the former case, the calculation of the value of minimum speed represents the distance of the origin to the hodograph line and is given by elementary manipulations. This approach in the study of physical problems, besides being elegant on its own right, helps college students feel the deep relation between physics and geometry.
SupplementaryMaterial_MethodsTablesFigures_MaySubmission.pdf from Precipitation and vegetation shape patterns of genomic and craniometric variation in the Central African rodent Praomys misonnei
Creators: name: Morgan, Katy
name: Mboumba, Jean Francois
name: Ntie, Stephan
name: Mickala, Patrick
name: Miller, Courtney A.
name: Zhen, Ying
name: Harrigan, Ryan J.
name: Underwood, Vinh Le
name: Ruegg, Kristen
name: Fokam, Eric B.
name: Taboue, Geraud C. Tasse
name: Clee, Paul R. Sesink
name: Fuller, Trevon
name: Smith, Thomas B.
name: Anthony, Nicola M.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Ecology

description: I have combined all of the supplementary material into one file as requested. This includes the supplementary methods, figures (with legends) and tables.
Chaotic maps coupled with random delays: connectivity, topology, and network propensity for synchronization
Creators: name: Marti, Arturo C.
name: Ponce, C. Marcelo
name: Masoller, Cristina
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We study the influence of network topology and connectivity on the synchronization properties of chaotic logistic maps, interacting with random delay times. Four different types of topologies are investigated: two regular (a ring-type and a ring-type with a central node) and two random (free-scale Barabasi-Albert and small-world Newman-Watts). The influence of the network connectivity is studied by varying the average number of links per node, while keeping constant the total input that each map receives from its neighbors. For weak coupling the array does not synchronize regardless the topology or connectivity of the network; however, for certain connectivity values there is enhanced coherence. For strong coupling the array synchronizes in the homogeneous steady-state, where the chaotic dynamics of the individual maps is suppressed. For both, weak and strong coupling, the array propensity for synchronization is largely independent of the network topology and depends mainly on the average number of links per node.
description: 5 pages, 3 figures. Proceedings for the conference LAWNP05
Pseudospin and Quantum Computation in Semiconductor Nanostructures
Creators: name: Scarola, V. W.
name: Park, K.
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We review the theoretical aspects of pseudospin quantum computation using vertically coupled quantum dots in the quantum Hall regime. We discuss the robustness and addressability of these collective, charge-based qubits. The low energy Hilbert space of a coupled set of qubits yields an effective quantum Ising model tunable through external gates. An experimental prediction of an even-odd effect in the Coulomb blockade spectra of the coupled quantum dot system probes the parameter regime necessary for realization of these qubits.
description: 13 pages, 6 figures, New Journal of Physics Focus Issue on "Solid State Quantum Information"
title: Информационное моделирование зданий и сооружений. Базовый уровень
Creators: name: ELS IPR BOOKS
Publisher: name: Казанский государственный архитектурно-строительный университет, ЭБС АСВ
Year: 2019

description: Учебно-методическое пособие «Информационное моделирование зданий и сооружений. Базовый уровень» разработано в соответствии с Государственным образовательным стандартом по направлениям подготовки 07.03.01 «Архитектура», 07.03.04 «Градостроительство», 08.03.01/08.04.01 «Строительство», 08.05.01 «Строительство уникальных зданий и сооружений». Может применяться и для других направлений, использующих в ка-честве одной из графических программ AutoCAD. Пособие предназначено для быстрого освоения программы на уровне, достаточном для работы c чертежами зданий и сооружений. Может употребляться в качестве справочной литературы по AutoCAD.
A versenyképesség fogalma és mérési módszerei az agrárgazdaságban
Creators: name: Karacsony, Peter
name: Karacsony, Peter
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Production Economics
subject: competitiveness
subject: agrarian economy
subject: comparative advantage
subject: profitability

description: The examination of competitiveness – thanks to its many definitions and the applied research methods – is a complex task, and this is especially true in the case of agricultural products. The competitiveness of Hungarian agricultural product has to this day been examined by several foreign and Hungarian experts and the results of their examinations have been made public. At the same time very little special literature deals with the different explanations and interpretations of the concept of competitiveness, and the analysis of the suitability of the measurement methods. In my essay I attempt to show the locatable definitions of competitiveness, and to show without aiming for completeness, the measurement methods which are deemed acceptable in special literature.
Problems of milk quota management in accounting system their effect on property status of enterprises
Creators: name: Kiss, Arpad
name: Kiss, Arpad
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Financial Economics
subject: milk quota regulation
subject: evaluation of milk quota
subject: accounting
subject: amortisation

description: According to both international and Hungarian accounting standards milk quota shall be capitalised among the assets of the enterprises. It is necessary for the implementation of the activity; its value can be defined based on market processes and regulations of the authorities. Due to the possibility of trading quotas on the market it would be the only solution to avoid the recognition of requested and purchased quotas on different values in the accounting system. Considering the total amount of quotas a HUF 40 billion increase of assets could be reached by the enterprises in milk production, if quotas were recognized among the intangible assets. Based on the results of a questionnaire survey the majority of enterprises did not perform the valuation tasks, therefore the total asset value is lower than the realistic value by HUF 50 million (by 7.2% of the total asset value). The study introduces the possible methods of the calculation of historical cost and depreciation.
title: Εφαρμογή Απεικόνισης Γραφημάτων σε Συσκευές Android
titleType: AlternativeTitle
title: Graph Drawing Application for Android Devices
Creators: name: Keliri, Loukia P.
Publisher: name: National Technological University of Athens
Year: 2014
Subjects: Γραφήματα
Απεικόνιση γραφημάτων
Βιβλιοθήκη
Εφαρμογή Android
Graphs
Graph drawing
Library
Android application
Android

description: 66 σ.
description: Η απεικόνιση γραφημάτων μπορεί να διαδραματίσει πολύ σημαντικό ρόλο στην οπτικοποίηση διαφόρων πληροφοριών στα κινητά τηλέφωνα. Μέχρι στιγμής οι υπάρχουσες λύσεις είτε είναι σε αρχικά στάδια ή δίνουν έμφαση στο κομμάτι της οπτικοποίησης και δεν δίνουν ιδιαίτερη βαρύτητα στο γράφημα ως μαθηματική έννοια. Σε αυτή την εργασία αναπτύχθηκε βιβλιοθήκη σε κώδικα Java, για απεικόνιση γραφημάτων σε συσκευές με λογισμικό Android,καθώς επίσης και η εφαρμογή GRAPHitiη οποία χρησιμοποιεί τη βιβλιοθήκη αυτή, και παρέχει ένα γραφικό περιβάλλον επικοινωνίας στο οποίο ο χρήστης μπορεί να δημιουργήσει ένα γράφημα, ή να φορτώσει κάποιο ήδη υπάρχον από αρχείοτύπου GraphML, να το επεξεργαστεί τροποποιώντας χαρακτηριστικά των κόμβων και των ακμών του, να διατάξει αυτόματα τους κόμβους του σε κύκλο, και τέλος, να το αποθηκεύσει στη συσκευή του.
description: Graph drawing can play an important role in visualizing information on smartphones. So far, the existing solutions are either in early stages, or they emphasize on visualizing the graph and they are not paying much attention to the graph as a mathematical concept. As part of this thesis, a java library has been developed for visualizing graphs in Android devices, as well as the GRAPHiti application which relies on this library and provides a Graphical User Interface (GUI), through which the user can create, edit, automatically arrange a graph in a circular layout and also, save and load GraphML files.
Most frequent bovine diseases in cattle herds in the West-Transdanubian Region
Creators: name: Varga, Noemi
name: Varallyay, Erika Bertalanne
name: Salamon, Lajos
name: Varga, Noemi
name: Varallyay, Erika Bertalanne
name: Salamon, Lajos
Publisher: name: Unknown
Year: 2009
Subjects: subject: Health Economics and Policy
subject: Livestock Production/Industries
subject: stock diseases
subject: culling
subject: calving interval period
subject: losses

description: The political and economical changes in 1989 and 90 influenced Hungary’s agriculture greatly. The transition hit the branches of animal husbandry more than plant growing. Cattle husbandry is one of the most important branches of agriculture in Hungary. Its production is equally important both for the domestic and for export markets. Under the present market conditions Hungary will only be able to maintain its cattle stock if the profitability and competitiveness of the branch can be enhanced considering the requirements of the European Union. Therefore the hidden causes of economic losses should be revealed and solutions have to be found in order to eliminate them. It is only possible if data on the health state of the herds are available. Several factors influence the profitability of running a dairy farm. Some of them cannot be influenced at all or little but there are a few factors, which can be changed considerably. Mastitis, fertility problems and metabolic diseases, lameness and several other infectious diseases like bovine virus diarrhoea (BVD) and infectious bovine rhinotracheitis (IBR) cause great losses in dairy herds in Hungary. They also cause high losses in countries with developed cattle breeding. In our study we wanted to answer the questions: ”What are the most frequent stock health problems on cattle farms in the West-Transdanubian region?” and ”How high is the rate of cows culled because of diseases?” We summarised and evaluated the data from questionnaires about the spread of the following diseases on 30 cattle farms: foot diseases, placenta retention and metritis, clinical and sub-clinical mastitis. Among them sub-clinical mastitis came highest (13.1%) followed by placenta retention (12.4%), metritis (9.6%) and clinical mastitis (9.5%). Culling owing to diseases reached 20.1% on average during the period of the investigation.
Step by step capping and strain state of GaN/AlN quantum dots studied by grazing incidence diffraction anomalous fine structure
Creators: name: Coraux, J.
name: Favre-Nicolin, V.
name: Renevier, H.
name: Proietti, M. G.
name: Daudin, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The investigation of small size embedded nanostructures, by a combination of complementary anomalous diffraction techniques, is reported. GaN Quantum Dots (QDs), grown by molecular beam epitaxy in a modified Stranski-Krastanow mode, are studied in terms of strain and local environment, as a function of the AlN cap layer thickness, by means of grazing incidence anomalous diffraction. That is, the X-ray photons energy is tuned across the Ga absorption K-edge which makes diffraction chemically selective. Measurement of \textit{hkl}-scans, close to the AlN (30-30) Bragg reflection, at several energies across the Ga K-edge, allows the extraction of the Ga partial structure factor, from which the in-plane strain of GaN QDs is deduced. From the fixed-Q energy-dependent diffracted intensity spectra, measured for diffraction-selected iso-strain regions corresponding to the average in-plane strain state of the QDs, quantitative information regarding composition and the out-of-plane strain has been obtained. We recover the in-plane and out-of-plane strains in the dots. The comparison to the biaxial elastic strain in a pseudomorphic layer indicates a tendency to an over-strained regime.
description: submitted to PRB
Heterotic on Half-flat
Creators: name: Gurrieri, Sebastien
name: Lukas, Andre
name: Micu, Andrei
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the effective action of the heterotic string compactified on particular half-flat manifolds which arise in the context of mirror symmetry with NS-NS flux. We explicitly derive the superpotential and Kahler potential at lowest order in alpha' by a reduction of the bosonic action. The superpotential contains new terms depending on the Kahler moduli which originate from the intrinsic geometrical flux of the half-flat manifolds. A generalized Gukov formula, valid for all manifolds with SU(3) structure, is derived from the gravitino mass term. For the half-flat manifolds it leads to a superpotential in agreement with our explicit bosonic calculation. We also discuss the inclusion of gauge fields.
description: 31 pages, references added
Quantum Annealing-Based Software Components: An Experimental Case Study with SAT Solving
Creators: name: Krüger, Tom
name: Mauerer, Wolfgang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Emerging Technologies (cs.ET)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Quantum computers have the potential of solving problems more efficiently than classical computers. While first commercial prototypes have become available, the performance of such machines in practical application is still subject to exploration. Quantum computers will not entirely replace classical machines, but serve as accelerators for specific problems. This necessitates integrating quantum computational primitives into existing applications. In this paper, we perform a case study on how to augment existing software with quantum computational primitives for the Boolean satisfiability problem (SAT) implemented using a quantum annealer (QA). We discuss relevant quality measures for quantum components, and show that mathematically equivalent, but structurally different ways of transforming SAT to a QA can lead to substantial differences regarding these qualities. We argue that engineers need to be aware that (and which) details, although they may be less relevant in traditional software engineering, require considerable attention in quantum computing.
On the convergence of continued fractions at Runckel's points and the Ramanujan conjecture
Creators: name: Tsygvintsev, Alexei
Publisher: name: arXiv
Year: 2004
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 40A15

description: We consider the limit periodic continued fractions of Stieltjes $$ \frac{1}{1-} \frac{g_1 z}{1-} \frac{g_2(1-g_1) z}{1-} \frac{g_3(1-g_2)z}{1-...,}, z\in \mathbb C, g_i\in(0,1), \lim\limits_{i\to \infty} g_i=1/2, \quad (1) $$ appearing as Shur--Wall $g$-fraction representations of certain analytic self maps of the unit disc $|w|< 1$, $w \in \mathbb C$. We precise the convergence behavior and prove the general convergence [2, p. 564 ] of (1) at the Runckel's points of the singular line $(1,+\infty)$ It is shown that in some cases the convergence holds in the classical sense. As a result a counterexample to the Ramanujan conjecture [1, p. 38-39] stating the divergence of a certain class of limit periodic continued fractions is constructed.
description: 8 pages
Weyl metrics and the generating conjecture
Creators: name: Richterek, L.
name: Horsky, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: By means of Ernst complex potential formalism it is shown, that previously studied static axisymmetric Einstein-Maxwell fields obtained though the application of the Horsky-Mitskievitch generating conjecture represent a combination of Kinnersley's transformations [W. Kinnersley: J. Math. Phys. 14 (1973) 651]. New theoretical background for the conjecture is suggested and commented.
description: 10 pages, to appear in Czech.J. Phys
Terahertz Pulse Shaping Using Diffractive Surfaces
Creators: name: Veli, Muhammed
name: Mengu, Deniz
name: Yardimci, Nezih T.
name: Luo, Yi
name: Li, Jingxi
name: Rivenson, Yair
name: Jarrahi, Mona
name: Ozcan, Aydogan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Recent advances in deep learning have been providing non-intuitive solutions to various inverse problems in optics. At the intersection of machine learning and optics, diffractive networks merge wave-optics with deep learning to design task-specific elements to all-optically perform various tasks such as object classification and machine vision. Here, we present a diffractive network, which is used to shape an arbitrary broadband pulse into a desired optical waveform, forming a compact pulse engineering system. We experimentally demonstrate the synthesis of square pulses with different temporal-widths by manufacturing passive diffractive layers that collectively control both the spectral amplitude and the phase of an input terahertz pulse. Our results constitute the first demonstration of direct pulse shaping in terahertz spectrum, where a complex-valued spectral modulation function directly acts on terahertz frequencies. Furthermore, a Lego-like physical transfer learning approach is presented to illustrate pulse-width tunability by replacing part of an existing network with newly trained diffractive layers, demonstrating its modularity. This learning-based diffractive pulse engineering framework can find broad applications in e.g., communications, ultra-fast imaging and spectroscopy.
description: 27 pages, 6 figures
Interactions between the Agricultural Sector and the HIV/AIDS Pandemic: Implications for Agricultural Policy
Creators: name: Jayne, Thomas S.
name: Villarreal, Marcela
name: Pingali, Prabhu L.
name: Hemrich, Gunter
name: Jayne, Thomas S.
name: Villarreal, Marcela
name: Pingali, Prabhu L.
name: Hemrich, Gunter
Publisher: name: Unknown
Year: 2004
Subjects: subject: Agricultural and Food Policy
subject: Health Economics and Policy
subject: agricultural policy
subject: HIV/AIDS
subject: structural transformation
subject: production factors

description: This paper considers how the design of agricultural policies and programmes might be modified to better achieve policy objectives in the context of severe HIV epidemics and underscores the central role of agricultural policy in mitigating the spread and impacts of the epidemic. Based on projections of future demographic change in the hardest-hit countries of eastern and southern Africa, HIV/AIDS is likely to have the following effects on the agricultural sector: (1) increased rural inequality caused by disproportionately severe effects of AIDS on relatively poor households; (2) a reduction in household assets and wealth, leading to less capital-intensive cropping systems for severely affected communities and households; and (3) problems in transferring knowledge of crop husbandry and marketing to the succeeding generation of African farmers. It is argued that -- even though the absolute number of working age adults in the hardest-hit countries is projected to remain roughly the same over the next two decades -- the cost of labour in agriculture may rise in some areas as increasing scarcity of capital (notably, animal draft power for land preparation and weeding) will increase the demand for labour in agricultural production or shift agricultural systems to less labour- and capital-intensive crops. The paper suggests that the most effective means for agricultural policy to respond to HIV/AIDS will entail focusing on: (1) investing in agricultural research to generate improved technologies capable of raising the productivity of crop and livestock systems; (2) rehabilitating agricultural extension services; (3) instituting crop and input marketing systems that contribute to small scale farmers productivity and food security. Finally, the paper provides some elements of a framework for governments and donors to assess and potentially modify existing agricultural programmes, policies, and investment strategies for achieving their agricultural and rural development objectives after factoring in the impacts of HIV/AIDS on the rural socio-economy.
A fast particle-mesh simulation of non-linear cosmological structure formation with massive neutrinos
Creators: name: Bayer, Adrian E.
name: Banerjee, Arka
name: Feng, Yu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Quasi-N-body simulations, such as FastPM, provide a fast way to simulate cosmological structure formation, but have yet to adequately include the effects of massive neutrinos. We present a method to include neutrino particles in FastPM, enabling computation of the CDM and total matter power spectra to percent-level accuracy in the non-linear regime. The CDM-neutrino cross-power can also be computed at a sufficient accuracy to constrain cosmological observables. To avoid the shot noise that typically plagues neutrino particle simulations, we employ a quasi-random algorithm to sample the relevant Fermi-Dirac distribution when setting the initial neutrino thermal velocities. We additionally develop an effective distribution function to describe a set of non-degenerate neutrinos as a single particle to speed up non-degenerate simulations. The simulation is accurate for the full range of physical interest, $M_ν\lesssim 0.6$eV, and applicable to redshifts $z\lesssim2$. Such accuracy can be achieved by initializing particles with the two-fluid approximation transfer functions (using the REPS package). Convergence can be reached in $\sim 25$ steps, with a starting redshift of $z=99$. Probing progressively smaller scales only requires an increase in the number of CDM particles being simulated, while the number of neutrino particles can remain fixed at a value less than or similar to the number of CDM particles. In turn, the percentage increase in runtime-per-step due to neutrino particles is between $\sim 5-20\%$ for runs with $1024^3$ CDM particles, and decreases as the number of CDM particles is increased. The code has been made publicly available, providing an invaluable resource to produce fast predictions for cosmological surveys and studying reconstruction.
description: 20 pages, 8 figures, 1 table. Code available at https://github.com/fastpm/fastpm
Supplementary online material to “Evolution of division of labour in mutualistic symbiosis“
Creators: name: Uchiumi, Yu
name: Sasaki, Akira
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 60801 Animal Behaviour
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Mathematical analyses and additional results
VLA Polarimetry Observations of PKS 2322-123; Estimating Magnetic Fields in the Abell 2597 Cluster
Creators: name: Pollack, L. K.
name: Taylor, G. B.
name: Allen, S. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present 5, 8, and 15 GHz total intensity and polarimetric observations of the radio source PKS 2322-123 taken with the Very Large Array (VLA). This small (11 kpc) source is located at the center of the cooling-core cluster Abell 2597. The inner X-ray structure, the radio morphology, and the steep spectral index (alpha = -1.8) in the lobes, all suggest that the radio emission is confined by the ambient X-ray gas. We detect a small region of polarized flux in the southern lobe and are able to calculate a Faraday rotation measure (RM) of 3620 rad/m/m over this region. Based on these observations and Chandra X-ray data we suggest that the southern lobe has been deflected from its original southwestern orientation to the south and into our line-of-sight. Using the observed RMs and our calculated electron density profiles, and assuming both a uniform and tangled magnetic field topology, we estimate a lower limit of the line-of-sight cluster magnetic field, B = 2.1 microgauss.
description: Accepted by MNRAS. 10 pages, 10 figures
ШАҲАР ИЧИДАГИ ШАҲАР (АРК ҚАЛЪАСИНИНГ ЎРГАНИЛИШ ТАРИХИДАН)
Creators: name: Қобилов, Шохрухмирзо
Publisher: name: Zenodo
Year: 2024

description: Бухорода 400 дан ортиқ қадимшунослик, меъморчилик ёдгорлиги, шу жумладан 11 меъморий сарой ансамбли, 8 мақбара, 47 масжид, 14 карвонсарой, 39 мадраса, 8 қадимшунослик ёдгорлиги, 250 турар жой, давлат муҳофазаси остидаги 32 монументал санъат ёдгорликлари мавжуд
Supplementary information from The genomic footprint of coastal earthquake uplift
Creators: name: Elahe Parvizi
name: Fraser, Ceridwen I.
name: Dutoit, Ludovic
name: Craw, Dave
name: Waters, Jonathan M.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Science

description: supplementary methods, results, figures and tables