cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Orbital stability of compact three-planet systems, II: Post-instability impact behaviour
Creators: name: Bartram, Peter
name: Wittig, Alexander
name: Lissauer, Jack J.
name: Gavino, Sacha
name: Urrutxua, Hodei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Recent observational missions have uncovered a significant number of compact multi-exoplanet systems. The tight orbital spacing of these systems has led to much effort being applied to the understanding of their stability; however, a key limitation of the majority of these studies is the termination of simulations as soon as the orbits of two planets cross. In this work we explore the stability of compact, three-planet systems and continue our simulations all the way to the first collision of planets to yield a better understanding of the lifetime of these systems. We perform over $25,000$ integrations of a Sun-like star orbited by three Earth-like secondaries for up to a billion orbits to explore a wide parameter space of initial conditions in both the co-planar and inclined cases, with a focus on the initial orbital spacing. We calculate the probability of collision over time and determine the probability of collision between specific pairs of planets. We find systems that persist for over $10^8$ orbits after an orbital crossing and show how the post-instability survival time of systems depends upon the initial orbital separation, mutual inclination, planetary radius, and the closest encounter experienced. Additionally, we examine the effects of very small changes in the initial positions of the planets upon the time to collision and show the effect that the choice of integrator can have upon simulation results. We generalise our results throughout to show both the behaviour of systems with an inner planet initially located at $1$ AU and $0.25$ AU.
รูปแบบการสอนวิชาเพศศึกษา ระดับอุดมศึกษาด้วยกิจกรรมร่วมมือ
Creators: name: กนกพร ทองสอดแสง
name: อนุวัต ชัยเกียรติธรรม
Publisher: name: มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2011
Subjects: รูปแบบการสอนเพศศึกษา, กิจกรรมร่วมมือ

description: 2, 5, วารสารมหาวิทยาลัยราชภัฏมหาสารคามมนุษยศาสตร์และสังคมศาสตร์
Plenary Session: Utility of the Future (slides)
Creators: S. Bahramirad
L. Jones
T. Pierpoint
Publisher: name: IEEE
Year: 2023

The electric utility industry is being transformed and reshaped with renewable, clean, and more resilient energy solutions. Robust decarbonization goals are being set along with more pressure to increase reliability and become more resilient. This is coupled with the challenges of an aging infrastructure and changing workforce. Power utilities are at the center of this challenge; tasked with integrating record levels of new, renewable, energy assets while accommodating dramatically increased multidirectional power flows, and hardening the grid to prepare for increasingly severe weather events exacerbated by climate change. This panel is made up of industry executives who will present and discuss ideas and initiatives driving Decarbonization, Grid Modernization, and the Utility of the Future.
The electric utility industry is being transformed and reshaped with renewable, clean, and more resilient energy solutions. Robust decarbonization goals are being set along with more pressure to increase reliability and become more resilient. This is coupled with the challenges of an aging infrastructure and changing workforce. Power utilities are at the center of this challenge; tasked with integrating record levels of new, renewable, energy assets while accommodating dramatically increased multidirectional power flows, and hardening the grid to prepare for increasingly severe weather events exacerbated by climate change. This panel is made up of industry executives who will present and discuss ideas and initiatives driving Decarbonization, Grid Modernization, and the Utility of the Future.
การวิเคราะห์หาปริมาณโลหะหนักในสีย้อมกกสังเคราะห์และการผลิตสีย้อมกกจากธรรมชาติ
Creators: name: ศรินทร์ ทองธรรมชาติ
name: ชื่นจิตร ศรีชูยงค์
name: วัชระ วารินทร์
name: พัชราภรณ์ พิมพ์จันทร์
Publisher: name: มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2011
Subjects: สีย้อมกก, สีย้อมธรรมชาติ, กระบวนการย้อมกกจากวัสดุธรรมชาต

description: 2, 5, วารสารมหาวิทยาลัยราชภัฏมหาสารคามมนุษยศาสตร์และสังคมศาสตร์
Grid-Graph Signal Processing (Grid-GSP): A Graph Signal Processing Framework for the Power Grid
Creators: name: Ramakrishna, Raksha
name: Scaglione, Anna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The underlying theme of this paper is to explore the various facets of power systems data through the lens of graph signal processing (GSP), laying down the foundations of the Grid-GSP framework. Grid-GSP provides an interpretation for the spatio-temporal properties of voltage phasor measurements, by showing how the well-known power systems modeling supports a generative low-pass graph filter model for the state variables, namely the voltage phasors. Using the model we formalize the empirical observation that voltage phasor measurement data lie in a low-dimensional subspace and tie their spatio-temporal structure to generator voltage dynamics. The Grid-GSP generative model is then successfully employed to investigate the problems pertaining to the grid of data sampling and interpolation, network inference, detection of anomalies and data compression. Numerical results on a large synthetic grid that mimics the real-grid of the state of Texas, ACTIVSg2000, and on real-world measurements from ISO-New England verify the efficacy of applying Grid-GSP methods to electric grid data.
description: 15 Pages, under review in IEEE Transactions on Signal Processing
D5.1 Strategy and Status Report for Communication, Engagement and Exploitation
Creators: name: Frontini, Francesca
name: Kontino, Thalassia
name: Stavropoulos, Tassos
name: Kontopidi, Maria
name: Hienola, Anca
Publisher: name: Zenodo
Year: 2024
Subjects: communication
engagement

description: This deliverable outlines the strategy for communication, engagement, and exploitation of OSTrails outcomes, detailing stakeholder targeting, communication tools, KPIs, and a value proposition roadmap for both EOSC, thematic and national users.
Isolate record for VAFB-ISO-659
Creators: name: Holloway, Corinne
Year: 1900
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory
subject: Chipped Stone
valueUri: https://core.tdar.org/browse/material-type/2/chipped-stone
subject: Chert
valueUri: https://core.tdar.org/browse/material-type/213/chert
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey

description: This document is the isolated find record for VAFB-ISO-659. The artifact is a dark brown banded Monterey chert biface mid-section.
Isolate record for VAFB-ISO-666
Creators: name: Holloway, Corinne
Year: 1900
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory
subject: Chipped Stone
valueUri: https://core.tdar.org/browse/material-type/2/chipped-stone
subject: Chert
valueUri: https://core.tdar.org/browse/material-type/213/chert
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey

description: This document is the isolated find record for VAFB-ISO-666. The artifact is a gray and white banded Monterey chert shatter.
Continuous forest inventory using multistage unequal probability sampling with partial replacement
Creators: name: Huang, Shongming
Publisher: name: University of British Columbia
Year: 2010

description: Continuous forest inventory (CFI) with partial replacement of sampling units (SPR) has been established as an efficient inventory technique. Previous CFI with SPR theory was based on equal probability sampling which might not be as efficient as the unequal probability sampling that is now widely used in forest inventories. In this study, the general theory of multistage sampling combined with CFI using unequal probabilities in a SPR structure on two occasions is discussed. Estimators of the current means and the change in means for both one-stage and two-stage cases are given, along with the estimators for the overall variances. The estimators derived for estimating the current means take the same form as those developed by other researchers. However, the estimators proposed for predicting the change in means take simpler forms than those presented in the literature. This might result in greater simplicity when used in data processing. The application of CFI with SPR using multistage unequal probability sampling to a Chinese national forest inventory is presented for illustrative purposes. Some particular points are addressed regarding specific situations in China. Although no precise theoretical demonstration of the gains from using this method is given, the combination of highly efficient sampling with unequal probabilities and the very practical multistage sampling in CFI with SPR inventories can certainly provide an efficient alternative to traditional Chinese inventory systems.
IMPROVING THE RESILIENCY OF COMMUNICATION NETWORKS BY APPLYING ARTIFICIAL INTELLIGENCE
Creators: name: Fernando, Mututhanthrige P
Publisher: name: Purdue University Graduate School
Year: 2025
Subjects: classificationCode: 461105
subject: Reinforcement learning
classificationCode: 461103
subject: Deep learning
classificationCode: 460609
subject: Networking and communications

description: One of the major concerns in wireless spectrum management is the underutilization of the active and licensed wireless spectrum. To enable the spectrum access to more users, it is of utmost importance to utilize these unused parts of the spectrum. Spectrum sensing and cognitive radio-based communication systems have emerged as a means to employ these unoccupied segments. These systems work by monitoring the spectrum for any licensed user activity and then transmitting when any licensed user activity is not present or transmitting while causing minimum interference when a licensed user is present. In a situation where an entity is attempting to transmit various traffic streams to multiple end-users by leveraging multiple cognitive radios, it would be appropriate to consider the entire set of cognitive radios as a single logical unit. The reason is that each cognitive radio transmission affects the transmission quality of other radios. Various cognitive communication systems that are capable of transmitting QoS and QoE-aware traffic to end-users have been proposed in the literature. However, there are significant technical challenges in effectively leveraging cooperation among cognitive radios to ensure reliable task-oriented communication, particularly in constrained communication environments. This comprehensive research tackles these technical challenges by exploring emerging AI and blockchain technologies. The research mainly consists of four main components: 1) development of blockchain-powered QoE-aware cooperative cognitive radio infrastructure, 2) exploration of trustworthy AI-powered spectrum sensing, 3) designing a QoE-aware communication infrastructure for surveilling wildfire, and 4) development of a semantic communication system for remote robot operations.
Static $\bar Q Q$ Potentials and the Magnetic Component of QCD Plasma near $T_c$
Creators: name: Liao, Jinfeng
name: Shuryak, Edward
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Static quark-anti-quark potential encodes important information on the chromodynamical interaction between color charges, and recent lattice results show its very nontrivial behavior near the deconfinement temperature $T_c$. In this paper we study such potential in the framework of the ``magnetic scenario'' for the near Tc QCD plasma, and particularly focus on the linear part (as quantified by its slope, the tension) in the potential as well as the strong splitting between the free energy and internal energy. By using an analytic ``ellipsoidal bag'' model, we will quantitatively relate the free energy tension to the magnetic condensate density and relate the internal energy tension to the thermal monopole density. By converting the lattice results for static potential into density for thermal monopoles we find the density to be very large around Tc and indicate at quantum coherence, in good agreement with direct lattice calculation of such density. A few important consequences for heavy ion collisions phenomenology will also be discussed.
description: 10 pages, 6 figures
Timing Covert Channel Analysis of the VxWorks MILS Embedded Hypervisor under the Common Criteria Security Certification
Creators: name: Cotroneo, Domenico
name: De Simone, Luigi
name: Natella, Roberto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Virtualization technology is nowadays adopted in security-critical embedded systems to achieve higher performance and more design flexibility. However, it also comes with new security threats, where attackers leverage timing covert channels to exfiltrate sensitive information from a partition using a trojan. This paper presents a novel approach for the experimental assessment of timing covert channels in embedded hypervisors, with a case study on security assessment of a commercial hypervisor product (Wind River VxWorks MILS), in cooperation with a licensed laboratory for the Common Criteria security certification. Our experimental analysis shows that it is indeed possible to establish a timing covert channel, and that the approach is useful for system designers for assessing that their configuration is robust against this kind of information leakage.
description: To appear on Computers & Security
February : General Issue
Creators: Bernard Fong
Soheil Mohseni
Alan Brent
Chun Sing Lai
Zhanlian Lie
Shishun Pan
Haoyi Zhou
Kishor Narnix
Publisher: name: IEEE
Year: 2023

Newsletter
This is a general issue featuring a foreword by Bernard Fong, "Advanced Analytics for Optimizing Energy Management in Smart Cities", "Grid Energy Storage and Smart City Standards for Electric Vehicle Integration Workshop", "Electric Vehicles Statistics", and "Electrotechnical Aspects of Smart Cities"
Mean Curvature Flow of Spacelike Graphs
Creators: name: Li, Guanghan
name: Salavessa, Isabel M. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 53C21, 53C40, 58D25, 35K55

description: We prove the mean curvature flow of a spacelike graph in $(Σ_1\times Σ_2, g_1-g_2)$ of a map $f:Σ_1\to Σ_2$ from a closed Riemannian manifold $(Σ_1,g_1)$ with $Ricci_1> 0$ to a complete Riemannian manifold $(Σ_2,g_2)$ with bounded curvature tensor and derivatives, and with sectional curvatures satisfying $K_2\leq K_1$, remains a spacelike graph, exists for all time, and converges to a slice at infinity. We also show, with no need of the assumption $K_2\leq K_1$, that if $K_1>0$, or if $Ricci_1>0$ and $K_2\leq -c$, $c>0$ constant, any map $f:Σ_1\to Σ_2$ is trivially homotopic provided $f^*g_20$, and $ρ=+\infty$ in case $K_2\leq 0$. This largely extends some known results for $K_i$ constant and $Σ_2$ compact, obtained using the Riemannian structure of $Σ_1\times Σ_2$, and also shows how regularity theory on the mean curvature flow is simpler and more natural in pseudo-Riemannian setting then in the Riemannian one.
description: version 5: Math.Z (online first 30 July 2010). version 4: 30 pages: we replace the condition $K_1\geq 0$ by the the weaker one $Ricci_1\geq 0$. The proofs are essentially the same. We change the title to a shorter one. We add an application
Galois cohomology of completed link groups
Creators: name: Blomer, Inga
name: Linnell, Peter
name: Schick, Thomas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 20E18, 20J06, 57M25

description: In this paper we compute the Galois cohomology of the pro-p completion of primitive link groups. Here, a primitive link group is the fundamental group of a tame link in the 3-sphere whose linking number diagram is irreducible modulo p (e.g. none of the linking numbers is divisible by p). The result is that (with Z/pZ-coefficients) the Galois cohomology is naturally isomorphic to the Z/pZ-cohomology of the discrete link group. The main application of this result is that for such groups the Baum-Connes conjecture or the Atiyah conjecture are true for every finite extension (or even every elementary amenable extension), if they are true for the group itself.
description: 11 pages, AMS-LaTeX 2e, v2 to appear in Proc.Amer.Math.Soc., minor corrections
Photovoltaic System Integration into LV Distribution Networks through Multiport Converters
Creators: name: Mohammed, Khaled A. A.
Publisher: name: Zenodo
Year: 2024

description: This poster presents a study on enhancing distribution grid flexibility using Soft Open Points based on multiport converters. It outlines a two-stage back-to-back VSC approach, focusing on dynamic response, bidirectional power flow, and LVRT compliance. The work was presented at the Rete Italiana Ricerca Fotovoltaico 2024 conference held at NOI Techpark/Eurac Research in Bolzano, Italy, on 11–12 June 2024.
Spatial Commuting Patterns of German Regional Labour Markets: A Sustainability Perspective
Creators: name: Tedeschi, Federico
name: Reggiani, Aura
name: Nijkamp, Peter
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: SECS-P/02 Politica economica

description: This paper aims to investigate the relationship between commuting and spatial labour market developments in the framework of sustainability issues. To do so, we propose, first, an exploratory investigation of the effects of inbound commuter flows on employment in regional labour markets in Germany. Next, we address sustainability issues as a common umbrella for the relationship ‘economy-transportation’. In this context, we show that the German production system is faced with negative environmental externalities, which are clearly associated with a specific transport mode, viz. the private car. Negative environmental externalities as a result of modal choices in Germany are confirmed by data from EU-15 countries. Public transport, in particular the train, appears to be more environmentally-benign.
Our results bring to light that, on average, commuter flows have a positive and robust effect on employment in the receiving German labour market districts, while, for commuting flows, public transport, especially the train, is a more environmentally-benign mode of transport, compared with the car, in reducing greenhouse gas emissions and energy consumption. In the light of possible policy strategies, the paper argues that sustainability may lead to positive economic effects; in particular, the improvement of the public transport system, which can provide more opportunities for sustainable commuting patterns, may lead to favourable employment perspectives for the local or regional labour force.
Novel database design for extreme scale corpus analysis
Creators: name: Coole, Matthew
Publisher: name: Lancaster University
Year: 2021

description: This thesis presents the patterns and methods uncovered in the development of a new scalable corpus database management system, LexiDB, which can handle the ever-growing size of modern corpus datasets. Initially, an exploration of existing corpus data systems is conducted which examines their usage in corpus linguistics as well as their underlying architectures. From this survey, it is identified that existing systems are designed primarily to be vertically scalable (i.e. scalable through the usage of bigger, better and faster hardware). This motivates a wider examination of modern distributable database management systems and information retrieval techniques used for indexing and retrieval. These techniques are modified and adapted into an architecture that can be horizontally scaled to handle ever bigger corpora. Based on this architecture several new methods for querying and retrieval that improve upon existing techniques are proposed as modern approaches to query extremely large annotated text collections for corpus analysis. The effectiveness of these techniques and the scalability of the architecture is evaluated where it is demonstrated that the architecture is comparably scalable to two modern No-SQL database management systems and outperforms existing corpus data systems in token level pattern querying whilst still supporting character level pattern matching.
Event Clustering and Abnormal Returns: Reassessing the Informational Value of Bets
Creators: name: Castellani, Massimiliano
name: Pattitoni, Pierpaolo
name: Patuelli, Roberto
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: SECS-P/02 Politica economica

description: An avalanche of empirical studies has addressed the validity of the rank-size rule (or Zipf’s law) in a multi-city context in many countries. City size in most countries seems to obey Zipf’s law, but the
question under which conditions (e.g. sample size, spatial scale) this ‘law’ holds remained largely
underinvestigated. Another complementary question is whether socio-economic networks in space also show a similar hierarchical pattern.
Against this background, the present paper investigates – from a methodological viewpoint – the relationship between network connectivity and the rank-size rule (or Zipf’s law) in an urban-economic
network constellation. After a review of the literature, we address in particular the following methodological issues: (i) the (aggregate) behavioural foundation underlying the rank-size rule/Zipf’s
law in the light of spatial-economic network theories (e.g. entropy maximization, spatial interaction theory, etc.); (ii) the nature of the analytical relationship between social-spatial network analysis and the
rank-size rule/Zipf’s law. We argue that the rank size rule is compatible with conventional economic foundations of spatial network models. Consequently, a spatial-economic interpretation – as well as a
network connectivity interpretation – of the rank-size rule coefficient is provided.
Our methodological contribution forms the foundation for the subsequent empirical analysis applied to spatial networks in a socio-economic context. The aim here is to test the sensitivity of empirical findings for changes in scale, functional forms, time periods, and network structures. Our application is concerned with an extensive spatio-temporal panel database related to the evolution of urban population in Germany. We test the relevance of the rank-size rule/Zipf’s law, and its evolution over the years, and – in parallel – the related ‘socio-economic’ connectivity in these urban networks. In particular, we will show that Zipf’s law (i.e., with the rank-size coefficient equal to 1) is only valid under particular conditions of the sample size. The paper concludes with some retrospective and prospective remarks.
Slides for: Introduction to the ISO/IEC 5087 Series of City Data Standards
Creators: Mark Fox
Publisher: name: IEEE
Year: 2023

Slides for Webinar: Introduction to the ISO/IEC 5087 Series of City Data Standards
This presentation will review the portfolio of ontology-based standards for city data being development by ISO/IEC JTC1 Working Group 11 on Smart Cities. ISO/IEC 21972:2020 specifies an ontology for the representation of the definition of city indicators, and their publishing by cities. ISO/IEC 5087 : "Information technology City data model" is a multi- part standard where part 1 focuses on foundational ontologies for city data, such as time, location, and activity. Part 2 focuses on ontologies for city data whose content are both created and consumed by multiple city services, such as resident and household. Part 3 focuses on a particular city service, in this case Transportation Planning, where the content is created by that service, and consumed by multiple other services, such as vehicle and route. Subsequent parts to 5087 will focus on other city services such as public health, Water, Solid waste, education, public safety, etc. The presentation will include a short introduction to ontologies, and an example of how these standards are being applied in the City of Toronto.
Quasi-particle interference and superconducting gap in a high-temperature superconductor Ca2-xNaxCuO2Cl2
Creators: name: Hanaguri, T.
name: Kohsaka, Y.
name: Davis, J. C.
name: Lupien, C.
name: Yamada, I.
name: Azuma, M.
name: Takano, M.
name: Ohishi, K.
name: Ono, M.
name: Takagi, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: High-transition-temperature (high-Tc) superconductivity is ubiquitous in the cuprates containing CuO2 planes but each cuprate has its own character. The study of the material dependence of the d-wave superconducting gap (SG) should provide important insights into the mechanism of high-Tc. However, because of the 'pseudogap' phenomenon, it is often unclear whether the energy gaps observed by spectroscopic techniques really represent the SG. Here, we report spectroscopic imaging scanning tunneling microscopy (SI-STM) studies of nearly-optimally-doped Ca2-xNaxCuO2Cl2 (Na-CCOC) with Tc = 25 ~ 28 K. They enable us to observe the quasi-particle interference (QPI) effect in this material, through which unambiguous new information on the SG is obtained. The analysis of QPI in Na-CCOC reveals that the SG dispersion near the gap node is almost identical to that of Bi2Sr2CaCu2Oy (Bi2212) at the same doping level, while Tc of Bi2212 is 3 times higher than that of Na-CCOC. We also find that SG in Na-CCOC is confined in narrower energy and momentum ranges than Bi2212. This explains at least in part the remarkable material dependence of Tc
description: 13pages, 4figs
The effect of some British Columbia forest tenures on the distribution of economic rents, the allocation of resources, and the investments in silviculture
Creators: name: Luckert, Martin Karl
Publisher: name: University of British Columbia
Year: 2010

description: Canadian forest tenures serve as policy tools which have important economic implications. This study analyzes the effect of some British Columbia forest tenures on the distribution of economic rents, the allocation of resources, and silvicultural investments. The thesis first identifies the problem governments face, as landlords, in attempting to specify an optimum tenure. Tenures may be described in terms of packages of individual characteristics, each of which may be controlled, to varying degrees, by governments. The problem governments face is choosing an optimal combination of specified characteristics. Several problems emerge in the specification of individual tenure characteristics and their aggregation into whole optimum tenures. The specification of any one optimum tenure characteristic requires political value judgments implicit in social welfare functions. Furthermore, interdependencies exist between tenure characteristics which make difficult the aggregation of optimally specified characteristics into an optimum tenure. The interdependencies between tenure characteristics provide the basis for two hypotheses. First, every tenure characteristic may influence the benefits of tenure holders. Second, tenure holders may expect their tenures to change, which may influence the future benefits that they receive. By testing these hypotheses, the effect of tenures on the distribution of rents and allocation of resources are analyzed. To test these hypotheses, tenure holders in British Columbia were interviewed to obtain empirical measurements of the effects of attenuations of tenure characteristics on benefits of tenure holders, and the security tenure holders perceive in their tenures. Results support both hypotheses and show how tenures are distributing rents and allocating resources. The study also investigates the effects of tenures on investments in silviculture. Tenure holders in British Columbia are surveyed to determine amounts spent on silviculture on selected tenure types. It is found that tenure holders which have incentives for voluntary investments in silviculture spend significantly greater amounts than those who make expenditures which are reimbursed or mandatory. Using the results of this study, recent changes in British Columbia forest policy are critiqued and areas for further research are identified.
LET-838: SYBCI NAGRPA After-Action Report Transmittal
Creators: name: Zalud, Arianna
Year: 2023

description: This document is the transmittal letter to the Santa Ynez Band of Chumash Indians for the Native American Graves Protection and Repatriation Act After-Action report associated with data recovery excavations at CA-SBA-512 as part of the Sentinel Test Program (Ground Base Strategic Deterrent [GBSD]).
Universal characteristics of resonant-tunneling field emission from nanostructured surfaces
Creators: name: Johnson, S.
name: Zuelicke, U.
name: Markwitz, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have performed theoretical and experimental studies of field emission from nanostructured semiconductor cathodes. Resonant tunneling through electric-field-induced interface bound states is found to strongly affect the field-emission characteristics. Our analytical theory predicts power-law and Lorentzian-shaped current-voltage curves for resonant-tunneling field emission from three-dimensional substrates and two-dimensional accumulation layers, respectively. These predicted line shapes are observed in field emission characteristics from self-assembled silicon nanostructures. A simple model describes formation of an accumulation layer and of the resonant level in these systems.
description: 5 pages, 4 figures, RevTex, to appear in J. Appl. Phys
From Crystal Color Symmetry to Quantum Spacetime
Creators: name: Bojowald, Martin
name: Saxena, Avadh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This perspective article elucidates both the importance and the implications of relativistic spacetime crystals as well as the renormalized blended coordinates transformation. It alludes to possible applications in materials science, condensed matter physics and quantum gravity.
description: 5 pages, 1 figure
Radiative transfer with opacity distribution functions: Application to narrow band filters
Creators: name: Anusha, L. S.
name: Shapiro, A. I.
name: Witzke, V.
name: Cernetic, M.
name: Solanki, S. K.
name: Gizon, L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Modelling of stellar radiative intensities in various spectral pass-bands plays an important role in stellar physics. At the same time the direct calculations of the high-resolution spectrum and then integrating it over the given spectral pass-band is computationally demanding due to the vast number of atomic and molecular lines. This is particularly so when employing three-dimensional (3D) models of stellar atmospheres. To accelerate the calculations, one can employ approximate methods, e.g., the use of Opacity Distribution Functions (ODFs). Generally, ODFs provide a good approximation of traditional spectral synthesis i.e., computation of intensities through filters with strictly rectangular transmission function. However, their performance strongly deteriorates when the filter transmission noticeably changes within its pass-band, which is the case for almost all filters routinely used in stellar physics. In this context, the aims of this paper are a) to generalize the ODFs method for calculating intensities through filters with arbitrary transmission functions; b) to study the performance of the standard and generalized ODFs methods for calculating intensities emergent from 3D models of stellar atmosphere. For this purpose we use the newly-developed MPS-ATLAS radiative transfer code to compute intensities emergent 3D cubes simulated with the radiative magnetohydrodynamics code MURaM. The calculations are performed in the 1.5D regime, i.e., along many parallel rays passing through the simulated cube. We demonstrate that generalized ODFs method allows accurate and fast syntheses of spectral intensities and their centre-to-limb variations.
description: 28 pages, 11 figures, accepted for publication in ApJS
From Unruh temperature to generalized Bousso bound
Creators: name: Pesci, Alessandro
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In a classical spacetime satisfying Einstein's equation and the null convergence condition, the same quantum mechanical effects that cause black holes to have a temperature are found to imply, if joined to the macroscopic nature of entropy, the covariant entropy bound in its generalized form. This is obtained from thermodynamics, as applied across the local Rindler causal horizon through every point p of the null hypersurfaces L the covariant entropy bound refers to, in the direction of the null geodesics generating L.
description: 5 pages. v2: some changes to clarify the path to the obtained results; two (final) paragraphs, the acknowledgments and a reference added
Fine-structure splitting of exciton states in quantum dot molecules: symmetry and tunnel-coupling effects
Creators: name: Xu, Dong
name: Zhao, Nan
name: Zhu, Jia-Lin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Exciton levels and fine-structure splitting in laterally-coupled quantum dot molecules are studied. The electron and hole tunneling energies as well as the direct Coulomb interaction are essential for the exciton levels. It is found that fine-structure splitting of the two-lowest exciton levels is contributed from the intra- and inter-dot exchange interactions, both of which are largely influenced by the symmetry and tunnel-coupling between the two dots. As the inter-dot separation is reduced, fine-structure splitting of the exciton ground state is largely increased while those of the excited states are decreased. Moreover, the dependence of the fine-structure splitting in quantum dot molecules on the Coulomb correlation is clearly clarified.
description: 8 pages, 8 figures
Surface temperature equalisation through automated laser vaporisation of
      thick film electrical heating elements
Creators: name: Ingham, Joshua
Publisher: name: Lancaster University
Year: 2019

description: The increasing proportion of energy used by electric heating devices
      creates an ever-growing demand for more efficient heating technology. This
      research project investigated the CO2 laser ablation of partially oxidised
      Ni-Fe-Cr-NiO flame sprayed electrical heating elements in order to develop
      an automated system to optimise the surface temperature profile of thin
      film electrical heating elements. The optimisation technique used was the
      targeted local resistance change across the surface of a heating element’s
      film so that the element temperature profile produced through the joule
      heating of the conductor is uniform and evenly distributed. Various
      surface treatment processing methods were developed that were used for the
      automated treatment of the element. These processing methods were compared
      and analysed through the standard deviation and kurtosis of the element’s
      surface temperature distribution, the greatest improvement of all the
      processing methods showed a 71% reduction in standard deviation of the
      surface temperature distribution of the heating element.
A coding theorem for the rate-distortion-perception function
Creators: name: Theis, Lucas
name: Wagner, Aaron B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The rate-distortion-perception function (RDPF; Blau and Michaeli, 2019) has emerged as a useful tool for thinking about realism and distortion of reconstructions in lossy compression. Unlike the rate-distortion function, however, it is unknown whether encoders and decoders exist that achieve the rate suggested by the RDPF. Building on results by Li and El Gamal (2018), we show that the RDPF can indeed be achieved using stochastic, variable-length codes. For this class of codes, we also prove that the RDPF lower-bounds the achievable rate
Volume 10: Issue 4: Data-Oriented Computing
Creators: Various
Publisher: name: IEEE
Year: 2022

Volume 10: Issue 4: Data-Oriented Computing
In this December 2022 issue, a new application area of data-driven computing - grid-edge computing for behind-the-meter resources - is presented to the readers. Essentially, grid-edge computing relies on computing power and communication so that many functions can be realized at the consumers' or prosumers' side, or grid edge. Those functions rely heavily on data and may have appeared in the academic literature a long time ago. It is the advancements in the computing hardware and communication that make those functions that rely on data feasible for practical applications. Seven feature articles and one "Technology Leaders" column have been amassed to cover grid-edge computing applications associated with the operation of distributed energy resources and smart buildings. This issue also includes two feature articles from regular submissions, one on the cooling technologies of electric vehicle batteries and one on Singapore's low-carbon energy deployment strategies.
Binary and ternary ionic compounds in the outer crust of a cold nonaccreting neutron star
Creators: name: Chamel, Nicolas
name: Fantina, Anthea
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The outer crust of a cold nonaccreting neutron star has been generally assumed to be stratified into different layers, each of which consists of a pure body-centered cubic ionic crystal in a charge compensating background of highly degenerate electrons. The validity of this assumption is examined by analyzing the stability of multinary ionic compounds in dense stellar matter. It is thus shown that their stability against phase separation is uniquely determined by their structure and their composition irrespective of the stellar conditions. However, equilibrium with respect to weak and strong nuclear processes imposes very stringent constraints on the composition of multinary compounds, and thereby on their formation. By examining different cubic and noncubic lattices, it is found that substitutional compounds having the same structure as cesium chloride are the most likely to exist in the outer crust of a nonaccreting neutron star. The presence of ternary compounds is also investigated. Very accurate analytical expressions are obtained for the threshold pressure, as well as for the densities of the different phases irrespective of the degree of relativity of the electron gas. Finally, numerical calculations of the ground-state structure and of the equation of state of the outer crust of a cold nonaccreting neutron star are carried out using recent experimental and microscopic nuclear mass tables.
description: 34 pages, 10 figures
Interacto: A Modern User Interaction Processing Model
Creators: name: Blouin, Arnaud
name: Jézéquel, Jean-Marc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Since most software systems provide their users with interactive features, building user interfaces (UI) is one of the core software engineering tasks. It consists in designing, implementing and testing ever more sophisticated and versatile ways for users to interact with software systems, and safely connecting these interactions with commands querying or modifying their state. However, most UI frameworks still rely on a low level model, the bare bone UI event processing model. This model was suitable for the rather simple UIs of the early 80s (menus, buttons, keyboards, mouse clicks), but now exhibits major software engineering flaws for modern, highly interactive UIs. These flaws include lack of separation of concerns, weak modularity and thus low reusability of code for advanced interactions, as well as low testability. To mitigate these flaws, we propose Interacto as a high level user interaction processing model. By reifying the concept of user interaction, Interacto makes it easy to design, implement and test modular and reusable advanced user interactions, and to connect them to commands with built-in undo/redo support. To demonstrate its applicability and generality, we briefly present two open source implementations of Interacto for Java/JavaFX and TypeScript/Angular. We evaluate Interacto interest (1) on a real world case study, where it has been used since 2013, and with (2) a controlled experiment with 44 master students, comparing it with traditionnal UI frameworks.
Perceptual and response organization of rhythmic patterns
Creators: name: Canic, Michael John
Publisher: name: University of British Columbia
Year: 2010

description: Four studies were undertaken to investigate the advance planning and perception of simple rhythmic patterns. Subjects listened to patterns of identical, computer-generated tones and then reproduced them as accurately as possible by tapping on a single response key. Section One focussed on the advance planning of isochronous rhythmic patterns in which subjects performed the additional task of initiating pattern reproduction as quickly as possible. In Experiment 1, subjects listened to patterns of one to six tones with interstimulus intervals (ISIs) of 300 ms. The reproduction phase involved no stimulus uncertainty. Reaction time (RT) was found to increase linearly with number of response events. Advance planning thus occurs for patterns reproduced as slow as 300 ms per response event. Stimulus uncertainty is not a necessary condition for RT to increase with response complexity. In Experiment 2, subjects reproduced patterns of one to eight tones with ISIs of 200, 400, 600, and 800 ms. A linear RT trend was found only at the 200-ms rate. Patterns slower than this rate did not display "response coherence". Patterns at the 200-ms and 400-ms rates showed evidence of grouping through the accenting of first and last intervals. These patterns' displayed "perceptual coherence". Section Two focussed on the perceptual organization of patterns in which pattern structures could suggest the grouping of events as two equal-duration intervals. In Experiment 3, subjects reproduced two series of patterns, one series in which the suggested grouping-intervals were initiated by external-world events, and one in which they were not. Pattern structures in the latter series were not suggestive enough to induce grouping of events as two equal-duration intervals. Patterns were instead grouped as two intervals of unequal duration showing that the relative temporal positions of external-world events dominates in simple perceptual grouping. Experiment 4 investigated the upper temporal limit of perceptual grouping intervals and the influence of number of group constituents. Results showed that perceptual grouping of events that span more than 1800 ms is seldom accomplished and that grouping occurs when intervals contain up to seven constituents.
Flow based features and validation metric for machine learning reconstruction of PIV data
Creators: name: Akbari, Ghasem
name: Montazerin, Nader
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Reconstruction of flow field from real sparse data by a physics-oriented approach is a current challenge for fluid scientists in the AI community. The problem includes feature recognition and implementation of AI algorithms that link data to a physical feature space in order to produce reconstructed data. The present article applies machine learning approach to study contribution of different flow-based features with practical fluid mechanics applications for reconstruction of the missing data of turbomachinery PIV measurements. Support vector regression (SVR) and multi-layer perceptron (MLP) are selected as two robust regressors capable of modelling non-linear fluid flow phenomena. The proposed flow-based features are optimally scaled and filtered to extract the best configuration. In addition to conventional data-based validation of the regressors, a metric is proposed that reflects mass conservation law as an important requirement for a physical flow reproduction. For a velocity field including 25% of clustered missing data, the reconstruction accuracy achieved by SVR in terms of R2-score is as high as 0.993 for the in-plane velocity vectors in comparison with that obtained by MLP which is up to 0.981. In terms of mass conservation metric, the SVR model by R2-score up to 0.96 is considerably more accurate than the MLP estimator. For extremely sparse data with a gappiness of 75%, vector and contour plots from SVR and MLP were consistent with those of the original field.
description: 31 pages, 11 figures
Electric Vehicle Charging Based on Solid-State Circuit Breaker Technology-Slides
Creators: Binesh Kumar
Publisher: name: IEEE
Year: 2023

TEC Webinar Video
Abstract: EV Charging infrastructure has become one of the biggest barriers to EV adoption and to meeting global decarbonization goals. There needs to be an overhaul in the approach of EV charging to support wide-scale charging infrastructure and to ensure future scalability, safety, security, and availability needs are met.  In this webinar, we will cover some of the fundamentals of EV Charging and how solid-state circuit breaker technologies can help overcome the challenges associated with it and to provide a scalable EV Charging infrastructure.
Effective action in elliptic and hyperbolic spacetimes
Creators: name: Alvarez, Enrique
name: Anero, Jesus
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The full one-loop (scalar) effective action is computed for both hyperbolic and elliptic spacetimes.
description: LaTeX, 13 pages, references added