cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Occurrence of forest fires in Santa Ana canton, Manabí province, Ecuador (2012-2018)
Creators: name: Ramos Rodríguez, Marcos Pedro
name: García Castro, Humberto Josué
name: Tetto, Alexandre França
name: Batista, Antonio Carlos
name: Manrique Toala, Tayron Omar
name: Estévez Valdés, Ignacio
Publisher: name: figshare
Year: 2021
Subjects: subject: 70503 Forestry Fire Management
subject: FOS: Agriculture, forestry and fisheries

description: Knowledge of where, when and why forest fires occur underpins effective fire management programs. This descriptive research had the objective of analyzing when, where and why forest fires occurred in the Santa Ana Canton, Manabí province, Ecuador during the period 2012-2018. The data was provided by the Fire Department of that town. The analysis was performed considering a spatio-temporal context (years, months, days of the week, localities and vegetation cover). Statistical analyzes were performed with the SPSS Statistics for Windows program (version 22.0). We worked with a significance level of 0.05. In the analyzed period, 91 occurrences were reported, corresponding to 2016 the highest percentage (38.46 %). From July to January, 94.50 % of the total occurrences were recorded, associated with low rainfall and increased use of fire by farmers to clear the land. During the day the largest number of events was recorded from 2:00 p.m. to 4:00 p.m. (27.47 %). In the cases in which the parish and the vegetation cover were specified, the highest percentages corresponded to Ayacucho and weeds with 54.05 and 26.37 %, respectively. The work allowed establishing temporal and spatial patterns of fire occurrences and their causality, constituting an important and relevant contribution on when, where and why fires occur in the Santa Ana Canton, information that can be used by the decision-makers of the integrated fire management activities.
title: Организация и реализация всеобщего обучения в общеобразовательных школах Остяко-Вогульского национального округа в 30-х гг. XX в.
title: ORGANIZATION AND IMPLEMENTATION OF UNIVERSAL EDUCATION IN SECONDARY SCHOOLS OF THE OSTYAK–VOGUL NATIONAL OKRUG IN THE 30s OF THE 20th CENTURY
Creators: name: Файзуллина, Накия Камиловна
Publisher: name: Издательский центр СурГУ
Year: 2020

description: Статья посвящена проблеме развития системы школьного образования в Остяко-Вогульском национальном округе в 30-х годах XX века. Автор уделяет внимание реализации закона о всеобщем обучении детей школьного возраста. В статье дается характеристика роста школьной сети, интернатов в округе; рассматривается решение проблемы обеспечения школ учительскими кадрами.
description: The article discusses the development of the school system in the Ostyak–Vogul National Okrug in the 30s of the 20th century. The author pays attention to the implementation of the law on universal education of school-age children. The article describes the growth of the school network and boarding schools in the Okrug. The attention is paid to the problem of school provision with teaching staff.
The Increasing in Value of a Quality Product by E-commerce: A Case Study of Organic Extra virgin Olive Oil in Italy
Creators: name: Galluzzo, Nicola
name: Galluzzo, Nicola
Publisher: name: Unknown
Year: 2006
Subjects: subject: Agribusiness
subject: organic extravirgin olive oil
subject: marketplaces
subject: websites

description: The aim of this work is to show as the Italian olive farms use e-commerce to commercialise organic olive extravirgin, highlighting weaknesses, critical states and good opportunities for the export, comparing the results with an another research carried out in 2003.
Market Organisation - Relevance of Structural Embeddedness of Economic Transactions in Networks
Creators: name: Mumm, Jakob
name: Mumm, Jakob
Publisher: name: Unknown
Year: 2006
Subjects: subject: Industrial Organization
subject: Social Network Analysis
subject: Interorganizational Relations
subject: Structural Embeddedness
subject: p* Model
subject: Networks.

description: This paper deals with research questions about the social and structural embeddedness of interorganizational networks. Social Network Analysis have proven capable of not only dealing with attributive data but also with interdependent relational data of actors within a network. Social network analysis provides with the class of p* models a tool with which multiplex and interdependent relations and attributes can be handled. The outcome of p* models may help to demonstrate that the market organisation of an industry can be understood in terms of structural regularities in a specific multiplex exchange system, especially in regard to social aspects, which are assumed to be important for the resource exchanges among industry members.
Leben in Einheit
Creators: name: Borovoj, Vitalij Michajlovič
name: Borovoy, Vitali M.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 33 Nr. 2 (1984): Ökumenische Rundschau, Band 33, Heft 2
Evidence for a Canonical GRB Afterglow Light Curve in the Swift/XRT Data
Creators: name: Nousek, J. A.
name: Kouveliotou, C.
name: Grupe, D.
name: Page, K.
name: Granot, J.
name: Ramirez-Ruiz, E.
name: Patel, S. K.
name: Burrows, D. N.
name: Mangano, V.
name: Barthelmy, S.
name: Beardmore, A. P.
name: Campana, S.
name: Capalbi, M.
name: Chincarini, G.
name: Cusumano, G.
name: Falcone, A. D.
name: Gehrels, N.
name: Giommi, P.
name: Goad, M.
name: Godet, O.
name: Hurkett, C.
name: Kennea, J. A.
name: Moretti, A.
name: O'Brien, P.
name: Osborne, J.
name: Romano, P.
name: Tagliaferri, G.
name: Wells, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present new observations of the early X-ray afterglows of the first 27 gamma-ray bursts (GRBs) detected with the Swift X-ray Telescope (XRT). The early X-ray afterglows show a canonical behavior, where the light curve broadly consists of three distinct power law segments: (i) an initial very steep decay (t^{-alpha} with 34, and augments the already severe requirements for the efficiency of the prompt gamma-ray emission.
description: 35 pages, 8 figures, accepted for publication in ApJ
title: Investigating and Modeling the Impact of Moisture on the Reliability of Mid-Power Light-Emitting Diodes
Creators: name: Benkner, Simon
Publisher: name: UNSPECIFIED
Year: 2024

description: Over the past decades Light-emitting Diode (LED) devices have not only entered but occupied large segments of the general lighting market due to their flexible control features, high power conversion efficiency and exceptional long lifetime when operated at the recommended conditions. With the constant emergence of new application specific phosphor-materials niche applications are targeted. In some use cases the LEDdevice is exposed to multiple, often elevated environmental stress conditions, such as temperature and humidity. An example of such an application is horticulture lighting in vertical or greenhouse farming scenarios. However, especially the impact of moisture on the LED device as a whole is only sparsely investigated in past studies since mostly thermal and electrical stress conditions were targeted. In particular, only very few studies have been conducted on plastic-leaded chip carrier (PLCC) Mid-Power LED devices with respect to moisture. These situation is also reflected in common standards and methodologies for reliability testing and lifetime calculation. Therefore, the investigation of moisture ingress on performance of a LED and modeling this very is the main scope of this work. Over the course of this work an accelerated degradation test experiment was designed and conducted to gain further insights on the role of the combination of temperature, current and humidity on the devices degradation. This experiment included four state-of-the-art, commercially available Mid-Power LED devices recommended for the use in horticulture applications that were each subjected to 24 different temperature, humidity and current conditions. The current state of each device was measured continuously with respect to its optical, electrical and thermal characteristics. Based on the observed results it is concluded that especially moisture ingress severely impacts the devices performance by causing the encapsulant to detach from adjacent parts of the package due to shear forces introduced by hygroscopic swelling of the silicone encapsulant. Accompanying effects, such as tarnishing of the reflective lead-frame coating or accelerated dissolution admixed phosphor particles can also be reported. Regarding the modeling of the observed degradation trajectories various continuous decay functions and a segmented decay approach were investigated. Latter showed promising results especially when considering the subsequent modeling of its decay parameters according to Eyrings equation. In addition, a Gaussian Process Regression as a decay modeling approach as well as Survival Analysis as a time-to-failure approach were explored. Especially for case of non-monotonous acceleration functions both yielded an increased accuracy compared to typical physics-based modeling approaches.
title: Организация экзаменационных испытаний в школах Югры в 1945–1953 гг.
title: ORGANIZATION OF EXAMINATION TESTS IN UGRA SCHOOLS IN 1945–1953
Creators: name: Кирилюк, Денис Валериевич
Publisher: name: Издательский центр СурГУ
Year: 2020

description: В статье рассматриваются вопросы организации экзаменационных испытаний в школах Ханты-Мансийского национального округа в первые послевоенные годы. Исследование основано на анализе информационных и статистических отчетов, справок и телеграмм руководства школьного образования Югры. Выделяются объективные и субъективные факторы низкого качества работы экзаменационных комиссий в школах, которые, по мнению автора, были связаны с общими проблемами развития школьного образования в регионе.
description: The article considers the organization of examination tests in schools of the Khanty-Mansi National Okrug in the early post-war years. The research is based on the analysis of information and statistical reports, references, and telegrams of the Ugra school administration. The author high-lights the objective and subjective factors of the low quality of work of examination commissions in schools. These factors, in the author's opinion, were associated with general problems of school education development in the region.
Light-Induced Valleytronics in Pristine Graphene
Creators: name: Mrudul, M. S.
name: Jiménez-Galán, Álvaro
name: Ivanov, Misha
name: Dixit, Gopal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Electrons in two-dimensional hexagonal materials have valley degree of freedom, which can be used to encode and process quantum information. The valley-selective excitations, governed by the circularly polarised light resonant with the material's band-gap, continues to be the foundation of valleytronics. It is often assumed that achieving valley selective excitation in pristine graphene with all-optical means is not possible due to the inversion symmetry of the system. Here we demonstrate that both valley-selective excitation and valley-selective high-harmonic generation can be achieved in pristine graphene by using the combination of two counter-rotating circularly polarized fields, the fundamental and its second harmonic. Controlling the relative phase between the two colours allows us to select the valleys where the electron-hole pairs and higher-order harmonics are generated. We also describe an all-optical method for measuring valley polarization in graphene with a weak probe pulse. This work offers a robust recipe to write and read valley-selective electron excitations in materials with zero bandgap and zero Berry curvature.
description: 16 pages, 4 figures
Topological and nematic superconductivity mediated by ferro-SU(4) fluctuations in twisted bilayer graphene
Creators: name: Wang, Yuxuan
name: Kang, Jian
name: Fernandes, Rafael M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose an SU(4) spin-valley-fermion model to investigate the superconducting instabilities of twisted bilayer graphene (TBG). In this approach, bosonic fluctuations associated with an emergent SU(4) symmetry, corresponding to combined rotations in valley and spin spaces, couple to the low-energy fermions that comprise the flat bands. These fluctuations are peaked at zero wave-vector, reflecting the "ferromagnetic-like" SU(4) ground state recently found in strong-coupling solutions of microscopic models for TBG. Focusing on electronic states related to symmetry-imposed points of the Fermi surface, dubbed here "valley hot-spots" and "van Hove hot-spots", we find that the coupling to the itinerant electrons partially lifts the huge degeneracy of the ferro-SU(4) ground state manifold, favoring inter-valley order, spin-valley coupled order, ferromagnetic order, spin-current order, and valley-polarized order, depending on details of the band structure. These fluctuations, in turn, promote attractive pairing interactions in a variety of closely competing channels, including a nodeless $f$-wave state, a nodal $i$-wave state, and topological $d+id$ and $p+ip$ states with unusual Chern numbers $2$ and $4$, respectively. Nematic superconductivity, although not realized as a primary instability of the system, still appears as a consequence of the near-degeneracy of superconducting order parameters that transform as one-dimensional and two-dimensional irreducible representations of the point group $D_{6}$.
description: 15 pages, 7 figures
Writing research projects: innovation and learning strategies
Creators: name: Ríos, Danilo Fernández
name: Cabañas, María Odilia Benítez
name: Dahiana Espínola Monges
name: Arias, Tomás López
name: Alvarenga, Andrea Alejandra Arrúa
Publisher: name: F1000Research
Year: 2016

description: When we look at lesson plans for teachers, curricula and standard textbooks, we realize that deep down in our educational and cultural systems, education remains merely a transmission process where knowledge is presented as a unequivocal and unquestionable set of facts from teacher to student. Moreover, teachers often oppose each other strategies of this type that include courses at initial levels of undergraduate and used only in advanced courses or postgraduate courses. In our particular exercise as graduate teachers we have seen that the skills generated from the inclusion of these strategies in initial courses have visibly improved the capabilities of our students.
title: К вопросу о кадровом обеспечении и условиях труда на предприятиях строительных материалов Тюменской области в 1960-е гг.
title: MORE ON STAFFING AND LABOUR CONDITIONS AT CONSTRUCTION MATERIALS ENTERPRISES OF TYUMEN OBLAST IN THE 1960s
Creators: name: Прищепа, Александр Иванович
Publisher: name: Издательский центр СурГУ
Year: 2020

description: В статье анализируется кадровая обеспеченность кирпичных заводов Западной Сибири в годы становления Западно-Сибирского нефтегазового комплекса. Отмечаются сложные условия трудовой деятельности и обыденной жизни рабочих. Рассматривается плохая обеспеченность работников жильем и медицинским обслуживанием. Акцентируется внимание на зависимости текучести кадров от решения проблем повседневной жизни тружеников строительной отрасли.
Большое место в публикации отводится исследованию формы подготовки и повышения квалификации трудящихся предприятий строительной индустрии. Отмечаются наиболее перспективные из них, особо подчеркивается институт наставничества в деле подготовки и воспитания молодых рабочих кадров.
description: The article analyzes the staffing of brick factories in Western Siberia during the formation of the West Siberian oil and gas complex. Difficult conditions of their work and everyday life are noted. Attention is drawn to the poor provision of housing and medical services for employees. The article focuses on the dependence of staff turnover on unsolved problems in the daily life of construction workers.
A large part of the publication is devoted to the study of the form of training and advanced training of workers in the construction industry. The most promising of them are noted, and the institution of mentoring in the training and education of young workers is mentioned.
Intrinsic and Enforceable Trust: A Research Agenda
Creators: name: Hofstede, Gert Jan
name: Hofstede, Gert Jan
Publisher: name: Unknown
Year: 2006
Subjects: subject: Institutional and Behavioral Economics
subject: Trust
subject: business network
subject: intrinsic trust
subject: enforceable trust

description: Trust is modelled as either enforceable or intrinsic. Antecedents of trust in history, human nature, personality and culture are analyzed. The implications of these for the dynamics of trust in business-to-business networks of organizations are discussed. Finally an agenda for empirical research is proposed, of which the author argues there is great need because of the crucial role of trust in networks of food provision.
title: Επανάχρηση και αναβίωση του Mercato Metronio, Ρώμη με βιοκλιματικά χαρακτηριστικά

title: Rethinking Mercato Metronio, Rome for a sustainable reuse
Creators: name: Μουντοκαλακη Ιωαννα
Publisher: name: Technical University of Crete
Year: 2023

description: Το Mercato Metronio είναι μια δομή πολλαπλών χρήσεων και η κατασκευή της πραγματοποιήθηκε στην δεκαετία του 50 στην περιοχή του San Giovanni της Ρώμης. Το κτίριο αποτελείται από το τμήμα της αγοράς και το τμήμα του πάρκινγκ το οποίο έχει πάψει να λειτουργεί από το 2014.
Οι τοπικές αγορές είναι κατ' εξοχήν δημόσιοι χώροι: τόποι συνάντησης, σημεία ανταλλαγής αλλά και κέντρα συγκέντρωσης. Σήμερα, όμως, στις περιπτώσεις που δεν έχουν γίνει νεότερες επεμβάσεις ,είναι χώροι με λίγους ενεργούς χειριστές, έντονο ανταγωνισμό από μεγάλους λιανοπωλητές και όλο και λιγότερους κατοίκους που έρχονται για να κοινωνικοποιηθούν και να αγοράσουν είδη πρώτης ανάγκης.
Συνεπώς , σκοπός της εργασίας είναι η επανεξέταση του ρόλου των αγορών στην αστική δομή ως το νέο είδος κοινωνικής περιοχής, που υποστηρίζει τις αστικές παραδόσεις και αποτελεί το μέσο ανταλλαγής μεταξύ των κοινοτήτων όχι μόνο οικονομικά, αλλά και κοινωνικά Η έννοια της αγοράς απαιτεί την ενοποίηση της αγοράς με πολιτιστικές λειτουργίες, εκπαιδευτικούς χώρους και διαμερίσματα.
Comparative Many-Body Study of Pr$_4$Ni$_3$O$_8$ and NdNiO$_2$
Creators: name: Karp, Jonathan
name: Hampel, Alexander
name: Zingl, Manuel
name: Botana, Antia S.
name: Park, Hyowon
name: Norman, Michael R.
name: Millis, Andrew J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the many-body electronic structure of the stoichiometric and electron-doped trilayer nickelate Pr$_4$Ni$_3$O$_8$ in comparison to that of the stoichiometric and hole-doped infinite layer nickelate NdNiO$_2$ within the framework of density functional plus dynamical mean field theory, noting that Pr$_4$Ni$_3$O$_8$ has the same nominal carrier concentration as NdNiO$_2$ doped to a level of 1/3 holes/Ni. We find that the correlated Ni-$3d$ shells of both of these low valence nickelates have similar many-body configurations with correlations dominated by the $d_{x^2-y^2}$ orbital. Additionally, when compared at the same nominal carrier concentration, the materials exhibit similar many-body electronic structures, self energies, and correlation strengths. Compared to cuprates, these materials are closer to the Mott-Hubbard regime due to their larger charge transfer energies. Moreover, doping involves the charge reservoir provided by the rare earth $5d$ electrons, as opposed to cuprates where it is realized via the oxygen $2p$ electrons.
title: Kentucky Culvert Study:
title: An Engineering Review of Policies and Practices Related to Procurement of Culvert and Sewer Pipe
titleType: Subtitle
Creators: name: Byrd, Tallamy
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1979
Subjects: subject: Transportation Engineering

description: Objectives: This study was undertaken to provide the Kentucky Department of Transportation (KyDOT) with 1 ) information concerning the present state-of-the-art in the selection of culvert pipes with reference to the problem of drainage water from coal mines, shales and other excavations which may be highly acidic; and 2 ) recommendations on alternative materials and/or special treatments for pipes in areas of acid drain water.  Methodology: The study consisted of a review of the literature from selected highway agencies including Kentucky, a review of culvert pipe selection practices in other states and discussions with persons knowledgeable about pipe materials.  Findings: The pH of drainage water is the dominant factor affecting pipe performance in Kentucky. Three breakpoints in the pH ranges of drainage water can be used to define environmental conditions at drainage sites. Several alternative pipe materials and coatings are suitable for each pH range.  Recommendations: Based upon the study data and findings, a series of recommendations have been developed which can be used by KyDOT in a policy for selection of materials and/or special treatments for pipe culverts for each set of environmental conditions encountered in Kentucky.
A series of three dimensional lanthanoid(III)-metal-organic frameworks with zwitterionic linker
Creators: name: Aghamohammadi, Parya
name: Arici, Mürsel
name: Büyükgüngör, Orhan
name: Wriedt, Mario
name: Yeşilel, Okan Zafer
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Computational Biology

description: A series of isostructural 3D lanthanoid coordination polymers, {[Ln(µ4-cbpy)2]Br·xsolvent}n (Ln = La(1), Pr(2), Nd(3), Sm(4), Gd(5), Tb(6), Dy(7) and Ho(8), (H2cbpy)Br = 4-carboxy-1-(4-carboxybenzyl)pyridinium bromide), have been solvothermally synthesized and characterized by single-crystal X-ray diffraction, IR and elemental analysis. Powder X-ray diffraction (PXRD) and thermal analyses (TG, DTA and DTA) of 1–8 were also investigated. The single crystal X-ray diffraction analyses revealed that 1–8 were isostructural and crystallized in the monoclinic space group C2/c. In the complexes, each cbpy– acts as a tetrakis(monodentate) to connect to four Ln(III) ions. A pair of Ln(III) ions are coordinated by four carboxylate oxygen atoms to form paddle-wheel {Ln2(RCOO)4} secondary building units which are connected by four cbpy– ligand to form a 3D structure with scu topology.
Seasonal Variations in the Skid Resistance of Pavements in Kentucky
Creators: name: Burchett, James L.
name: Rizenbergs, Rolands L.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1979
Subjects: subject: Transportation Engineering

description: Frequent measurements of skid resistance were made on 20 pavements in common use in Kentucky. Tests were conducted from November 1969 through 1973. Principal analysis involved relating changes in skid resistance to day of the year and relating skid resistance to temperature at the time of test, to average antecedent temperatures, and to average rainfall.  Seasonal variations exhibited an annual sinusoidal cycle. The changes in sand-asphalt and bituminous concrete surfaces under higher volumes of traffic were about 12 skid numbers. The changes in portland cement concrete and bituminous concrete under lower volumes of traffic were about 5 skid numbers. The lowest skid numbers (SN's) occurred in early to mid-August for portland cement concrete and sand-asphalt pavements and in late August to early September for bituminous concrete. Correlations between changes in SN and temperature were best for ambient air temperature averaged over 4- and 8-week periods prior to date of test. However, correlations between changes in SN and temperature were not as good as correlations between SN and day of the year. On the other hand, combining traffic volumes in the form of deviations from yearly average daily traffic with temperature yielded correlations with SN's which were as good as correlations between SN's and the day of the year.  It was concluded that skid resistance measurements in Kentucky should be conducted between the first of July and the middle of November to be assured of detecting significant differences in SN. However, frequent testing of reference sections is recommended to define more specifically each year the beginning and ending date of the testing season.
Exponential functionals of Levy processes
Creators: name: Bertoin, Jean
name: Yor, Marc
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60 G 51, 60 J 55 (Primary) 60 G 18, 44 A 60 (Secondary)

description: This text surveys properties and applications of the exponential functional $\int_0^t\exp(-ξ_s)ds$ of real-valued Lévy processes $ξ=(ξ_t,t\geq0)$.
description: Published at http://dx.doi.org/10.1214/154957805100000122 in the Probability Surveys (http://www.i-journals.org/ps/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Detection of Binary Square Fiducial Markers Using an Event Camera
Creators: name: Sarmadi, Hamid
name: Muñoz-Salinas, Rafael
name: Olivares-Mendez, Miguel A.
name: Medina-Carnicer, Rafael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Event cameras are a new type of image sensors that output changes in light intensity (events) instead of absolute intensity values. They have a very high temporal resolution and a high dynamic range. In this paper, we propose a method to detect and decode binary square markers using an event camera. We detect the edges of the markers by detecting line segments in an image created from events in the current packet. The line segments are combined to form marker candidates. The bit value of marker cells is decoded using the events on their borders. To the best of our knowledge, no other approach exists for detecting square binary markers directly from an event camera using only the CPU unit in real-time. Experimental results show that the performance of our proposal is much superior to the one from the RGB ArUco marker detector. The proposed method can achieve the real-time performance on a single CPU thread.
description: An error in the abstract of the IEEE Access version has been corrected in this version. Link to the IEEE Access paper: https://doi.org/10.1109/ACCESS.2021.3058423
Design Proposal for a Circular Cavitation Loop Engine with Passive Fluidic Logic and Scissor-Based Actuation
Creators: name: Fernandes, Ricardo Miguel Machado
Publisher: name: Ricardo Miguel Machado Fernandes
Year: 2025
Subjects: Cavitation
Fluid dynamics
Biomimicry
Mechanical logic
Fluidic engine
Passive actuation
Circular energy systems

description: This document presents a novel theoretical design for a self-sustaining cavitation-based engine, inspired by the pistol shrimp's claw mechanics. The proposed system consists of a closed-loop sequence of fluid chambers triggered by pressure pulses and bistable mechanical actuators. It integrates fluidic logic, passive energy transfer, and scissor-based compression in a circular configuration. This concept has not been previously implemented and may serve as a foundation for experimental research into low-input, cyclic energy systems and fluidic computation.
The imprints of local superclusters on the Sunyaev-Zel'dovich signals and their detectability with Planck
Creators: name: Dolag, K.
name: Hansen, F. K.
name: Roncarelli, M.
name: Moscardini, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use high-resolution hydrodynamical simulations of large-scale structure formation to study the imprints of the local superclusters onto the full-sky Sunyaev-Zel'dovich (SZ) signals. Following (Mathis et al. 2002), the initial conditions have been statistically constrained to reproduce the density field within a sphere of 110 Mpc around the Milky Way, as observed in the IRAS 1.2-Jy all-sky redshift survey. As a result, the positions and masses of prominent galaxy clusters and superclusters in our simulations coincide closely with their real counterparts in the local universe. We present the results of two different runs, one with adiabatic gas physics only, and one also including cooling, star formation and feedback. By analysing the full-sky maps for the thermal and kinetic SZ signals extracted from these simulations, we find that for multipoles with l<100 the power spectrum is dominated by the prominent local superclusters, and its amplitude at these scales is a factor of two higher than that obtained from unconstrained simulations; at lower multipoles (l<20) this factor can even reach one order of magnitude. We check the influence of the SZ effect from local superclusters on the cosmic microwave background (CMB) power spectrum at small multipoles and find it negligible and with no signs of quadrupole-octopole alignment. However, performing simulations of the CMB radiation including the experimental noise at the frequencies which will be observed by the Planck satellite, we find results suggesting that an estimate of the SZ power spectrum at large scales can be extracted.
description: revised version, MNRAS, accepted
Ginzburg-Landau theory of crystalline anisotropy for bcc-liquid interfaces
Creators: name: Wu, Kuo-An
name: Karma, Alain
name: Hoyt, Jeffrey J.
name: Asta, Mark
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The weak anisotropy of the interfacial free-energy $γ$ is a crucial parameter influencing dendritic crystal growth morphologies in systems with atomically rough solid-liquid interfaces. The physical origin and quantitative prediction of this anisotropy are investigated for body-centered-cubic (bcc) forming systems using a Ginzburg-Landau theory where the order parameters are the amplitudes of density waves corresponding to principal reciprocal lattice vectors. We find that this theory predicts the correct sign, $γ_{100}>γ_{110}$, and magnitude, $(γ_{100}-γ_{110}) / (γ_{100}+γ_{110})\approx 1%$, of this anisotropy in good agreement with the results of MD simulations for Fe. The results show that the directional dependence of the rate of spatial decay of solid density waves into the liquid, imposed by the crystal structure, is a main determinant of anisotropy. This directional dependence is validated by MD computations of density wave profiles for different reciprocal lattice vectors for $\{110\}$ crystal faces. Our results are contrasted with the prediction of the reverse ordering $γ_{100}
description: 9 pages, 5 figures
Synthesis, crystal structure, DFT analysis, and DNA studies of a binuclear copper(II) complex with 2,2′-bipyridine and 4-aminobenzoate
Creators: name: Parthiban, D.
name: Baskaran, S.
name: Rani, S.
name: Arumugham, M.N.
name: Si, N. T.
name: Kumar, R.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Computational Biology

description: A complex containing two discrete molecules, [Cu2(bpy)2(4-Ab)2(NO3)(H2O)] and [Cu2(bpy)2(4-Ab)2(H2O)2] and the lattice including three NO3 anions, one 4-Ab, and three H2O molecules (bpy = 2,2′-bipyridine, 4-Ab = 4-aminobenzoate), was prepared and structurally determined using elemental analyses, IR, EPR, UV-visible, and single-crystal X-ray crystallography. X-ray single-crystal structural studies indicated that the [Cu2(bpy)2(4-Ab)2] unit was present in both the crystallographic units. The complex crystallized in an orthorhombic crystal system with space group Pna21, a = 35.004(3) Å, b = 18.4134(16) Å and c = 12.8659(12) Å. In both crystallographic units, the geometry of the Cu(II) ions is distorted square-pyramidal, where both nitrogen atoms from one bpy and two oxygen atoms from two different p-aminobenzoate ions constitute the square plane and the apical positions are occupied by solvent or nitrate oxygen atoms. The geometry optimization of both units of the binuclear complex was carried out by taking the coordinates of the respective X-ray structures using DFT. The binding studies of the copper(II) complex with calf thymus DNA (CT-DNA) were explored by UV-Vis absorption, fluorescence spectroscopic, and cyclic voltammetric techniques. Also, the cleavage of pBR322 DNA with the binuclear copper(II) complex was studied using the gel electrophoresis method.
Random recursive trees and the Bolthausen-Sznitman coalescent
Creators: name: Goldschmidt, Christina
name: Martin, James B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 60J25 (Primary) 60C05, 60F05, 05C05 (Secondary)

description: We describe a representation of the Bolthausen-Sznitman coalescent in terms of the cutting of random recursive trees. Using this representation, we prove results concerning the final collision of the coalescent restricted to [n]: we show that the distribution of the number of blocks involved in the final collision converges as n tends to infinity, and obtain a scaling law for the sizes of these blocks. We also consider the discrete-time Markov chain giving the number of blocks after each collision of the coalescent restricted to [n]; we show that the transition probabilities of the time-reversal of this Markov chain have limits as n tends to infinity. These results can be interpreted as describing a ``post-gelation'' phase of the Bolthausen-Sznitman coalescent, in which a giant cluster containing almost all of the mass has already formed and the remaining small blocks are being absorbed.
description: 28 pages, 2 figures. Revised version with minor alterations. To appear in Electron. J. Probab
The experience of combining motherhood with career for members of the Royal Canadian Mounted Police
Creators: name: Goodwin, Shelley L.
Publisher: name: University of British Columbia
Year: 2009

description: While women have been police officers for over 100 years, women were not permitted into the Royal Canadian Mounted Police (RCMP) until 1974. Past research focused on women's abilities to perform policing duties. As a result there is minimal research available which focuses on how women police officers combine their policing career and motherhood roles. This phenomenological study was conducted to explore the experiences of six female regular members of the RCMP who have combined career and motherhood roles. Using Colaizzi's (1978) method of phenomenological analysis was used to analyze the transcriptions of the indepth, tape-recorded interviews. Results of the analysis yielded five themes: 1) perceived need to prove themselves again in the Force; 2) sense of isolation; 3) sense of shift of priorities; 4) sense of restricted choices and opportunities; and 5) struggle to redefine self. Validation interviews were conducted to ensure the themes accurately reflected the womens' experiences of combining their career and motherhood roles. Implications for future research are discussed and suggestions for counselling female members of the RCMP who are combining career and motherhood roles are suggested.
Synthesis and structural characterization of Zn2+, Cd2+ and Hg2+ complexes with tripyrrolidinophosphine chalcogenides
Creators: name: Ebeid, Khaled
name: Ebnou, F.
name: M'haiham, M.
name: Carpenter-Warren, C.L.
name: Slawin, A.M.Z.
name: Woollins, J.D.
name: Dhia, M.T. Ben
name: Barry, A.H.
name: Sanhoury, M.A.K.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Marine Biology

description: Six new complexes of zinc(II), cadmium(II) and mercury(II) chlorides with tripyrrolidinophosphine chalcogenides of the types [MCl2(Pyrr3PE)2] (M = Zn, E = S (1) or E = Se (2); M = Cd, E = S (3) or E = Se (4)) and [{HgCl(Pyrr3PE)}2(µ-Cl)2] (E = S (5) or Se (6)) have been prepared in yields of 66-92% by reaction of the ligands with metal chloride in ethanol and characterized by 1H and 31P NMR, IR, elemental analysis, conductivity, and single crystal X-ray diffraction analysis. The results show that the complexes are pseudo-tetrahedral containing coordinated chloride ions. Interestingly, the X-ray studies reveal that while the title ligands produce dinuclear complexes with Hg, their Cd and Zn complexes are mononuclear. The tetrahedral bond angles vary from 85.69(5)° to 126.25(4)° in dinuclear complexes 5 and 6 and from 93.51(3)° to 117.38(3)° in mononuclear species 2-4. The E = S bond lengths are in the range 1.999(9)-2.198(2) Å. The coordination properties of the title ligands are discussed and compared to those obtained for their bulkier counterparts.
Observation of resonant dipolar collisions in ultracold $^{23}$Na$^{87}$Rb rotational mixtures
Creators: name: He, Junyu
name: Ye, Xin
name: Lin, Junyu
name: Guo, Mingyang
name: Quéméner, Goulven
name: Wang, Dajun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We report the investigation on dipolar collisions in rotational state mixtures of ultracold bosonic $^{23}$Na$^{87}$Rb molecules. The large resonant dipole-dipole interaction between molecules in rotational states of opposite parities brings about significant modifications to their collisions, even when an electric field is not present. In this work, this effect is revealed by measuring the dramatically enhanced two-body loss rate constants in the mixtures. In addition, the dipolar interaction strength can be tuned by preparing the NaRb mixture in different rotational levels with microwave spectroscopy. When the rotational level combination is not of the lowest energy, contributions from hyperfine changing collisions are also observed. Our measured loss rate constants are in good agreement with a quantum close-coupling calculation which we also present in full detail.
description: Expanded version with the theory included in detail
Single-copy entanglement in a gapped quantum spin chain
Creators: name: Hadley, Christopher
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The single-copy entanglement of a given many-body system is defined [J. Eisert and M. Cramer, Phys. Rev. A. 72, 042112 (2005)] as the maximal entanglement deterministically distillable from a bipartition of a single specimen of that system. For critical (gapless) spin chains, it was recently shown that this is exactly half the von Neumann entropy [R. Orus, J. I. Latorre, J. Eisert, and M. Cramer, Phys. Rev. A 73, 060303(R) (2006)], itself defined as the entanglement distillable in the asymptotic limit: i.e. given an infinite number of copies of the system. It is an open question as to what the equivalent behaviour for gapped systems is. In this paper, I show that for the paradigmatic spin-S Affleck-Kennedy-Lieb-Tasaki chain (the archetypal gapped chain), the single-copy entanglement is equal to the von Neumann entropy: i.e. all the entanglement present may be distilled from a single specimen.
description: Typos corrected; accepted for publication in Phys. Rev. Lett.; comments welcome
Two new MOFs based on a flexible tripod ligand, structure regulation, stability, Hirshfeld surface analysis and fluorescence properties
Creators: name: Jia, Mei-Mei
name: Zhang, Xiao-Yu
name: Yang, Qing-Lin
name: Xiong, Ding-Qi
name: Fu, Peng-Kun
name: Jiao, Miao-Miao
name: Wang, Xiao-Long
name: Dong, Xiu-Yan
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: In this work, two MOFs, {[Cd3(L)2(m-BDC)(NO3)4]·2(H2O)}n (1) and [Zn3(L)(m-BDC)3]n (2), were synthesized using the hydrothermal method. Single crystal diffraction showed that the flexible tripod ligand L (1,3,5-[1-(2-methylimidazole-methylene)]benzene) delivers completely different configurations under the influence of the coordination metal [Cd(II), Zn(II)] ions, resulting in two completely different structures. In 1, the flexible tripod ligand L adopted a "chair" conformation which combined with Cd(II) ions, forming a two-dimensional structure in the orthorhombic C2221 space group. In 2, L adopted a "bowl" conformation which combined with Zn(II) ions, forming another two-dimensional structure in the P-3m1 space group. The synthesized MOFs were characterized by PXRD, thermogravimetry (TGA), infrared spectroscopy (IR), elemental analysis, fluorescence property analysis, Hirshfeld surface analysis, and density functional theory (DFT) quantitative calculations. The fluorescence analysis displayed that the maximum emission wavelength of 1 and 2 has a blue shift. In addition, the results of thermogravimetric analysis (TGA) showed that the thermal stability of 1 is 150 °C higher than that of 2. This is probably because the energy of "chair" conformation is lower than that of the "bowl" conformation, which makes 1 more stable than that of 2.
title: Potential for waste heat utilization of hot‐water‐cooled data centers: A case study
Creators: name: Oltmanns, Johannes
name: Sauerwein, David
name: Dammel, Frank
name: Stephan, Peter
name: Kuhn, Christoph
Publisher: name: John Wiley & Sons
Year: 2024

description: The electric energy demand of data centers in Germany has grown rapidly from 10.5 TWh/a in 2010 to 13.2 TWh/a in 2017, an average of 25% of which are used to fulfill the data centers' cooling demand. In order to increase its energy efficiency, TU Darmstadt applies a new cooling concept in the next generation of its high‐performance computing data center “Lichtenberg II.” Instead of the current air‐cooled servers with water‐cooled rear doors at 17‐24°C, the new data center will be equipped with direct hot‐water cooling for the high‐performance computer, supplying heat at a temperature of 45°C. The high‐temperature waste heat is used for heating purposes on the university's campus Lichtwiese. For waste heat utilization, two concepts are presented, either integrating the heat in the return line of the district heating network or using it locally in buildings located near the data center. Reductions in CO₂ emission and annuity are generated both by decreased compression cooling demand for the data center and by decreased heat generation due to waste heat utilization. Depending on the scenario, a total of 20%‐50% of the waste heat emitted by the high‐performance computer can be used for heating purposes, while the remaining heat is dissipated efficiently via free cooling without additional energy demand for mechanical chillers. CO₂ emission can be decreased by up to 720 tCO₂/a, representing a reduction of about 4% of the total emission at campus Lichtwiese. TU Darmstadt is currently implementing the waste heat integration into its district heating network and will benefit from this concept starting in 2020.
Maximum Likelihood Estimation in Gaussian Chain Graph Models under the Alternative Markov Property
Creators: name: Drton, Mathias
name: Eichler, Michael
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62H12; 62J05

description: The AMP Markov property is a recently proposed alternative Markov property for chain graphs. In the case of continuous variables with a joint multivariate Gaussian distribution, it is the AMP rather than the earlier introduced LWF Markov property that is coherent with data-generation by natural block-recursive regressions. In this paper, we show that maximum likelihood estimates in Gaussian AMP chain graph models can be obtained by combining generalized least squares and iterative proportional fitting to an iterative algorithm. In an appendix, we give useful convergence results for iterative partial maximization algorithms that apply in particular to the described algorithm.
description: 15 pages, article will appear in Scandinavian Journal of Statistics
On duality of color and kinematics in (A)dS momentum space
Creators: name: Albayrak, Soner
name: Kharel, Savan
name: Meltzer, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We explore color-kinematic duality for tree-level AdS/CFT correlators in momentum space. We start by studying the bi-adjoint scalar in AdS at tree-level as an illustrative example. We follow this by investigating two forms of color-kinematic duality in Yang-Mills theory, the first for the integrated correlator in AdS$_4$ and the second for the integrand in general AdS$_{d+1}$. For the integrated correlator, we find color-kinematics does not yield additional relations among $n$-point, color-ordered correlators. To study color-kinematics for the AdS$_{d+1}$ Yang-Mills integrand, we use a spectral representation of the bulk-to-bulk propagator so that AdS diagrams are similar in structure to their flat space counterparts. Finally, we study color KLT relations for the integrated correlator and double-copy relations for the AdS integrand. We find that double-copy in AdS naturally relates the bi-adjoint theory in AdS$_{d+3}$ to Yang-Mills in AdS$_{d+1}$. We also find a double-copy relation at three-points between Yang-Mills in AdS$_{d+1}$ and gravity in AdS$_{d-1}$ and comment on the higher-point generalization. By analytic continuation, these results on AdS/CFT correlators can be translated into statements about the wave function of the universe in de Sitter.
description: 14 pages, 4 figures, v2: Added references and footnote for double-copy