cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Harmonics Modeling Techniques for Inverter Based Generation Resources
Creators: Bob Arritt
Krishnat Patil
Amir Kazemi
David Mueller
Publisher: name: IEEE
Year: 2024

Inverter based generation resources utilize voltage source converter schemes that require more advanced modeling methodologies compared to the simple current source models that are traditionally used for harmonic loads.  These panel presentations will illustrate harmonics studies examples of IBR plants, the source characteristics of voltage source converters, and modern software tools used for this analysis.
Inverter based generation resources utilize voltage source converter schemes that require more advanced modeling methodologies compared to the simple current source models that are traditionally used for harmonic loads.  These panel presentations will illustrate harmonics studies examples of IBR plants, the source characteristics of voltage source converters, and modern software tools used for this analysis.
Observation of spin-glass behavior in nickel adsorbed few layer graphene
Creators: name: Mitra, Sreemanta
name: Mondal, Oindrila
name: Banerjee, Sourish
name: Chakravorty, Dipankar
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nickel-adsorbed graphene was prepared by first synthesizing graphite oxide (GO) by modified Hummers' method and then reducing a solution containing both GO and $Ni^{2+}$. EDX analysis showed 31 atomic percent nickel was present. Magnetization measurements under both dc and ac magnetic fields were carried out in the temperature range 2 K to 300 K. The zero field cooled and field cooled magnetization data showed a pronounced irreversibility at a temperature around 20 K. The analysis of the ac susceptibility data were carried out by both Vogel-Fulcher as well as power law. From dynamic scaling analysis the microscopic flipping time $τ_{0}\sim 10^{-13} s$ and critical exponent $zν=5.9\pm0.1$ were found, indicating presence of conventional spin glass in the system. The spin glass transition temperature was estimated as 19.5 K. Decay of thermoremanent magnetization (TRM) was explained by stretched exponential function with a value of the exponent as 0.6 . From the results it is concluded that nickel adsorbed graphene behaves like a spin-glass.
description: 19 pages, 8 figures
Additional file 1 of Development of a core outcome set for informed consent for therapy: An international key stakeholder consensus study
Creators: name: Convie, Liam J.
name: Clements, Joshua M.
name: McCain, Scott
name: Campbell, Jeffrey
name: Kirk, Stephen J.
name: Clarke, Mike
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Additional outcomes suggested by Delphi participants during Round 1.
The Suzaku View of the Disk-Jet Connection in the Low Excitation Radio Galaxy NGC 6251
Creators: name: Evans, D. A.
name: Summers, A. C.
name: Hardcastle, M. J.
name: Kraft, R. P.
name: Gandhi, P.
name: Croston, J. H.
name: Lee, J. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present results from an 87-ks Suzaku observation of the canonical low-excitation radio galaxy (LERG) NGC 6251. We have previously suggested that LERGs violate conventional AGN unification schemes: they may lack an obscuring torus and are likely to accrete in a radiatively inefficient manner, with almost all of the energy released by the accretion process being channeled into powerful jets. We model the 0.5-20 keV Suzaku spectrum with a single power law of photon index $Γ=1.82^{+0.04}_{-0.05}$, together with two collisionally ionized plasma models whose parameters are consistent with the known galaxy- and group-scale thermal emission. Our observations confirm that there are no signatures of obscured, accretion-related X-ray emission in NGC 6251, and we show that the luminosity of any such component must be substantially sub-Eddington in nature.
description: 5 pages, 3 figures, 2 tables. Accepted for publication in ApJ Letters
Grid Forming IBR Operation Within Transmission Systems
Creators: Wei Du
Alex Shattuck
Amro Quedan
Anders Bostrom
Publisher: name: IEEE
Year: 2024

Discussion of current grid forming inverter-based resource activities within the world market, their implementations, functionality, and capabilities. Panelists represent those involved in research, system studies, manufacturers, and standards development.
Discussion of current grid forming inverter-based resource activities within the world market, their implementations, functionality, and capabilities. Panelists represent those involved in research, system studies, manufacturers, and standards development.
Quaternary stratigraphy and geomorphology of the Central Okanagan Valley, British Columbia
Creators: name: Thomson, Skye Ryan
Publisher: name: University of British Columbia
Year: 2011

description: Theories on the origin of the valley-fill architecture and age of the Okanagan basin sediments remain divided between those favouring a pre-Fraser Glaciation and those favouring a post-Fraser Glaciation genesis. Regionally, landforms related to large meltwater discharges are continually being recognized, but sediment packages demonstrating those processes were previously unknown. Glacial sediments and landforms on the University of British Columbia campus near Kelowna BC were studied using surficial mapping, shallow seismic, and lithologic logs. Analysis revealed basin architecture consisting of fluvial valley fills, tributary fans, and subglacial flood deposits. The lowest valley sequence includes coarse fluvial sediments >65,000 yrs BP. Above are fine-grained sand and layers of organics (woody debris) radiocarbon dated at 35,000 - 23,000 yrs BP. Dates indicate continual deposition leading up to and during glaciation. The upper 10 - 20 m of sediments contains high energy bedforms that include dunes, antidunes, hummocky cross-stratification, and hummocky unconformities. Stacked bedforms are commonly conformably draped by laminated silt and clay couplets, indicating repeated discharge events filling a subglacial reservoir. Esker networks intrude into subglacial bedforms and represent high energy subglacial meltwater conduit erosion and deposition near the ice margins. Waning flow gravel deposits were initially parallel to esker direction, but locally reoriented into clastic dykes. Clastic dyke formation likely resulted from pressure created by regional ice recoupling after drainage of a subglacial lake phase. The following sequence is proposed: 1) The Okanagan Valley operated as a pre-glacial river valley 65,000 - 23,000 yrs BP and filled with clastic sediments and woody debris during glacial onset. 2) During the Fraser Glaciation, several high energy subglacial floods from the north and northwest filled a subglacial lake that repeatedly drained. 3) Esker conduit sedimentation and erosion indicates last stages of rapid flow from the west of the campus. 4) Clastic dykes within the esker indicate massive pressure heads ensued, and were likely caused by regional ice sheet recoupling. 5) Absence of tills in the central part of the valley and truncation of the esker distally indicates a late-stage water flow scoured out glacial sediments, except in the lee of bedrock obstacles.
Disentangled Person Image Generation
Creators: name: Ma, Liqian
name: Sun, Qianru
name: Georgoulis, Stamatios
name: Gool, Luc Van
name: Schiele, Bernt
name: Fritz, Mario
Publisher: name: CISPA
Year: 2023

description: Generating novel, yet realistic, images of persons is a challenging task due to the complex interplay between the different image factors, such as the foreground, background and pose information. In this work, we aim at generating such images based on a novel, two-stage reconstruction pipeline that learns a disentangled representation of the aforementioned image factors and generates novel person images at the same time. First, a multi-branched reconstruction network is proposed to disentangle and encode the three factors into embedding features, which are then combined to re-compose the input image itself. Second, three corresponding mapping functions are learned in an adversarial manner in order to map Gaussian noise to the learned embedding feature space, for each factor respectively. Using the proposed framework, we can manipulate the foreground, background and pose of the input image, and also sample new embedding features to generate such targeted manipulations, that provide more control over the generation process. Experiments on Market-1501 and Deepfashion datasets show that our model does not only generate realistic person images with new foregrounds, backgrounds and poses, but also manipulates the generated factors and interpolates the in-between states. Another set of experiments on Market-1501 shows that our model can also be beneficial for the person re-identification task.
Scalable EMT Simulation & Use in Transmission Planning
Creators: Jose Conto
Thai Thanh Nguyen
Ning Lin
Ash Vandaei
Publisher: name: IEEE
Year: 2024

As the penetration of power electronics increases in the power grid, the power system planning needs to undergo a transformation. This transformation will include the need for new design and planning tools for power system planners like electromagnetic transient (EMT) simulation tools. As this transition to the use of EMT tools happens, it becomes important to understand the processes needed to perform such analysis, models needed to perform such analysis, validation methods to maintain model quality, perform scalable EMT analysis of systems, among others. In this panel session, these different attributes that need to be considered for use of EMT in planning will be discussed as system operators and utilities embrace the use of EMT simulations in planning.
As the penetration of power electronics increases in the power grid, the power system planning needs to undergo a transformation. This transformation will include the need for new design and planning tools for power system planners like electromagnetic transient (EMT) simulation tools. As this transition to the use of EMT tools happens, it becomes important to understand the processes needed to perform such analysis, models needed to perform such analysis, validation methods to maintain model quality, perform scalable EMT analysis of systems, among others. In this panel session, these different attributes that need to be considered for use of EMT in planning will be discussed as system operators and utilities embrace the use of EMT simulations in planning.
Energy Design Performance Modelling for Multi-unit Residential Buildings: A Vancouver Case Study
Creators: name: Beckett, Robert
Publisher: name: Environmental Design
Year: 2018
Subjects: subject: building envelope
subject: early stage design
subject: building energy performance
subject: EnergyPlus
subject: Simulation
subject: parametric study
subject: interactive tool
subject: Energy

description: Acceleration of improvements in building energy performance will make an important contribution to Canada’s climate change reduction targets. Building energy codes and voluntary certification programs, such as LEED, have been successful at incrementally improving overall building energy performance, but do not directly address the design process that is at the core of the issue. In order for architects and integrated design teams to consistently propose building designs that drive down energy consumption and provide capacity for renewable energy generation, they must have effective tools that support evidence-based decision making. A focus on design performance modelling (DPM), rather than building energy modelling (BEM), focuses attention on individual decisions, rather than providing an evaluation of completed designs. In this thesis, analysis tools and workflows that are aligned with the rapid, iterative, non-linear design process are proposed to extract contextualized information from a database of parametric simulation results to provide evidence based support for early stage design decisions.
Genotype-by-environment effects on grain quality among heat and drought tolerant bread wheat (Triticum aestivum L.) genotypes
Creators: name: Zamalotshwa Thungo
name: Shimelis, Hussein
name: Odindo, Alfred
name: Mashilo, Jacob
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
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: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Plant Biology

description: This study determined genotype-by-environment effect on grain quality among heat and drought tolerant bread wheat genotypes to select ideal genotypes for grain quality improvement. Gliadin (Gli), gluten (Glu), glutenin (Glut), gliadin: glutenin ratio (Gli: Glut ratio) and total protein content (TPC) were determined among 28 elite bread wheat genotypes under non-stressed and drought-stressed conditions. Additive main effect and multiplicative interaction and genotype and genotype-by-environment biplot were used for data analyses. Large genotypic effects were observed for Gli (55.42%), TPC (67.78%) and Gli: Glu ratio (49.77%), suggesting genotypic variation for these traits. High environmental influence of 89.65 and 89.06% were observed for Glu and Glut. Wheat genotypes LM03, LM22, LM23, LM41, LM44, LM60, LM62, LM71, LM73, LM71, LM85, LM90 and LM95 with high protein and protein-fractions and high levels of abiotic stress tolerance (i.e. heat and drought) were selected for breeding for high grain quality.
Interpretive Themes in Quantum Physics: Curriculum Development and Outcomes
Creators: name: Baily, Charles
name: Finkelstein, Noah D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics Education (physics.ed-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A common learning goal for modern physics instructors is for students to recognize a difference between the experimental uncertainty of classical physics and the fundamental uncertainty of quantum mechanics. Our prior work has shown that student perspectives on the physical interpretation of quantum mechanics can be characterized, and are differentially influenced by the myriad ways instructors approach interpretive themes in their introductory courses. We report how a transformed modern physics curriculum (recently implemented at the University of Colorado) has positively impacted student perspectives on quantum physics, by making questions of classical and quantum reality a central theme of the course, but also by making the beliefs of students (and not just those of scientists) an explicit topic of discussion.
description: Supporting materials available at http://tinyurl.com/baily-dissertation
Mixing effect on stand yield of Pinus tabulaeformis and Quercus liaotungensis is modulated by site quality and stand density in the Loess Plateau, China
Creators: name: Yang, Xiao-Zhou
name: He, Qiu-Yue
name: Zhang, Wen-Hui
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Pharmacology
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: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Plant Biology

description: Interactions between plants are complicated: they can change resource availability, the proportion of resources acquired and the efficiency of resource use. This can eventually lead to changes in stand yield, but the driving mechanisms remain controversial. This study aimed to clarify the effects of mixing on stand yield. We established 120 mixed and pure plots of Chinese pine (Pinus tabulaeformis) and Liaodong oak (Quercus liaotungensis) in the Loess Plateau, China. Based on the inventory data in 2009 and 2016, we compared the differences in yields between mixed and pure stands. Our results indicated that the mixing of pine and oak resulted in over-yielding, but there was no transgressive over-yielding and pure pine stands consistently produced the highest yields. The over-yielding was due to facilitation between pine and oak, especially the improvement of light conditions in the understory, and an increase in the light use-efficiency of young pine and the availability of light to young oak. Mixing did not reduce competition: pine was dominant in interspecific competition and inhibited the growth of oak. The mixing effect was affected by site quality and stand density: improvements in site quality reduced over-yielding, while increases in stand density increased over-yielding.
Phosphorus scavenging through calcite co-precipitation : bringing clarity to Clear Lake
Creators: name: Whitehouse, Ryan David
Publisher: name: University of British Columbia
Year: 2012

description: Clear Lake represents an economically significant mesotrophic lake located in southwest Manitoba. In an attempt to describe the biogeochemical factors and mechanisms controlling the cycling of phosphorus in this waterbody various physio-chemical and chemical attributes of the lake water, seston and sediments were measured. Within the water column clear seasonal summer stratification was evident. Hypolimnetic water remained oxic throughout the ice-free period and pH remained neutral to alkaline throughout the entire period of observation. Chemical analysis of the lake indicated the water is enriched in Ca²⁺ and Mg²⁺, likely as a result of the calcareous Cretaceous shale in the surrounding watershed. During summer stratification in 2008, large concurrent increases in dissolved oxygen, pH and CaCO₃ saturation index were observed to occur simultaneously with large reductions in total and dissolved P. This was interpreted as an incidence of biologically-mediated pH shift during an algal bloom leading to a precipitation of CaCO₃ in association with occluded organic and inorganic P. Fractional P analysis, conducted on particulate seston and sediment, separated the total P (TP) into Organic P (OP), Non-Apatite Inorganic P (NAIP), and Apatite P (AP). Significant amounts of AP in the seston and sediment provide support for the interpretation that authigenic CaCO₃ scavenged P from the water column. Within the sediment cores, large and increasing amounts of AP indicate that all co-precipitated P is retained long term within the sediment as refractory AP. The combination of efficient scavenging during co-precipitation events and long-term storage of P as AP in the sediments suggests that the calcareous nature of the lake is playing an important role in the biogeochemical cycles.
Intersection of continua and rectifiable curves
Creators: name: Balka, Richárd
name: Harangi, Viktor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We prove that for any non-degenerate continuum $K \subseteq \mathbb{R}^d$ there exists a rectifiable curve such that its intersection with $K$ has Hausdorff dimension 1. This answers a question of B. Kirchheim.
Arbuscular mycorrhizal fungi (AMF) species and abundance exhibit different effects on saline-alkaline tolerance in Leymus chinensis
Creators: name: Yaping Cao
name: Xuefeng Wu
name: Zhukova, Anastasiia
name: Zhanhui Tang
name: Weng, Yue
name: Zhenxin Li
name: Yurong Yang
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Arbuscular mycorrhizal fungi (AMF) was considered as a biotechnological tool for plant stress tolerance improvement and degraded ecosystem restoration. However, the variations in the effects of AMF species and abundance on plant performance under stress condition have to be still investigated. The study was conducted to evaluate the mechanisms of five AMF species, single or mixture, on Leymus chinensis stress tolerance along a saline-alkaline gradient. The results showed that AMF enhanced plant stress tolerance by promoting plant growth, enhancing nutrient absorption, maintaining ion balance, and improving photosynthetic efficiency. Funneliformis mosseae, Rhizophagus intraradices and the mixture treatments had more beneficial effects than Diversispora versiformis and Acaulospora scrobiculata inoculations. Plant grown under high stress level exhibited more benefits from AMF symbiosis. Our study suggests that not only presence of AMF, but also the species and abundance should be considered to reveal the exact effects of AMF on plant saline-alkaline tolerance and degraded grassland restoration.
Power Quality Aspects of Grid Modernization
Creators: Gaurav Singh
Ramon  Saenz
Jan Meyer
Grazia Todeschini
David Mueller
Publisher: name: IEEE
Year: 2024

Grid modernization activities are resulting in many trends that will affect power quality levels on electricity transmission and distribution systems.  For example, inverter based resources will have many impacts, including the generation of higher frequency noise from switching.  New measurement methods and analytical techniques will be necessary to meet these challenges.
Grid modernization activities are resulting in many trends that will affect power quality levels on electricity transmission and distribution systems.  For example, inverter based resources will have many impacts, including the generation of higher frequency noise from switching.  New measurement methods and analytical techniques will be necessary to meet these challenges.
Resilience: from weather events to cyber-attacks - WIP
Creators: Robert Jeffers
Ananda Arunachalam
Junbo Zhao
Publisher: name: IEEE
Year: 2024

This panel will discuss resilience from multiple perspectives. First, the panel will discuss their work on various types of resilience events, including weather events and cyber security events. These resilience events will be explored from the perspective of the grid and the affected communities. The panelists represent the utilities, academia and the national laboratories and will discuss existing and potential industry-to-academia collaborations for resilience.    Bobby Jeffers, NREL  Ananda Arunachalam, Eversource  Junbo Zhao, University of Connecticut  Moderator: Elli Ntakou, Eversource
This panel will discuss resilience from multiple perspectives. First, the panel will discuss their work on various types of resilience events, including weather events and cyber security events. These resilience events will be explored from the perspective of the grid and the affected communities. The panelists represent the utilities, academia and the national laboratories and will discuss existing and potential industry-to-academia collaborations for resilience.    Bobby Jeffers, NREL  Ananda Arunachalam, Eversource  Junbo Zhao, University of Connecticut  Moderator: Elli Ntakou, Eversource
Salt stress affects mineral nutrition in shoots and roots and chlorophyll a fluorescence of tomato plants grown in hydroponic culture
Creators: name: Loudari, Aicha
name: Chahinez Benadis
name: Naciri, Rachida
name: Soulaimani, Aziz
name: Zeroual, Youssef
name: Gharous, Mohamed El
name: Kalaji, Hazem M.
name: Oukarroum, Abdallah
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
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: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: Salt stress is considered one of the major constraints limiting plant growth. Here, tomato plants were grown in hydroponic culture with two salt sodium chloride concentrations (S1 = 2.8 dS m−1 and S2 = 4.8 dS m−1). Under salt treatment, a significant decrease in chlorophyll content index and shoot and root dry weight were observed. We found that copper (Cu) was accumulated significantly in the shoot and sodium (Na) was significantly accumulated in the root. Furthermore, a significant nutrient imbalance indicated by a decrease in phosphorus (P), and potassium (K) uptake was measured. These decreases were accompanied by an increase in Na and Cu contents. A decrease in chlorophyll fluorescence yield was also observed indicating an inhibition at photosystem I acceptor sites. It seems that the downregulation of the electron transport between photosystem II and photosystem II under salt stress could be due to an imbalance in nutrient uptake.
Designing for the Mindbody in Technology-Mediated Music-Making
Creators: name: Pon, Aura
Publisher: name: Arts
Year: 2018
Subjects: subject: Music
subject: Music Technology
subject: Mindbody
subject: Computing Technology
subject: Interaction Design
subject: Embodied Cognition
subject: Digital Musical Instruments
subject: New Interfaces for Musical Expression
subject: Computer Music
subject: Fine Arts
subject: Music
subject: Education--Technology
subject: Computer Science

description: Together as attributes of one entity, the mind and body determine how we experience, understand, and make music. Our bodily experiences in the world shape how we comprehend music. In turn, our music cognition and expressive intentions, which are based on our bodily experiences, are mediated through the body when we make music. This inseparable mind-body interaction is essential to our sense of meaning, connection, and embodiment in our musical experiences, yet this dynamic is not always intact in today's technology-mediated music-making. Digital technology offers endless possibilities for new musical sounds and the mechanisms to control them, but the relationship between musical intentions, human action, and sound in such technology must be deliberately designed. Some current approaches to designing computer-based musical experiences dichotomize these mental and physical aspects of music-making, causing issues of disembodiment and disengagement. Employing a practice-based research methodology, the author's project explores the potential of considering the “mindbody” in the design of interactive computer systems for music-making. This thesis presents the motivation, background context, mindbody concept development, research methodology, and the documentation and analysis of practical project work. Five interactive systems for music-making designed for this practical exploration are: 1) Vuzik, an interface for composing through painting gestures, 2) Womba, a musical instrument for a fetal child to play in in utero, 3) R-oboe, a system for digitally extending an oboe, 4) Mindsets, a system using brainwaves to transform an instrumentalist’s sound, and 5) Torrent, a system that musifies and physicalizes muscle tension. Four music compositions composed with these systems are: 1) Concordia discors for Vuzik interactive display and three ChoirMob instruments, 2) Being and Becoming for oboe and interactive electronics, 3) Mindsets for violin, brainwaves and digital signal processing, and 4) Torrent for flutes and water. This exploratory creative and design process also yielded a set of design heuristics for considering the mindbody in technology design, pertaining to 1) valuing and awareness of process, 2) integrating intention, action, and sound, and 3) whole-body engagement.
On an isoperimetric problem with a competing non-local term. II. The general case
Creators: name: Knuepfer, Hans
name: Muratov, Cyrill B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This paper is the continuation of [H. Knüpfer and C. B. Muratov, Commun. Pure Appl. Math. (2012, to be published)]. We investigate the classical isoperimetric problem modified by an addition of a non-local repulsive term generated by a kernel given by an inverse power of the distance. In this work, we treat the case of general space dimension. We obtain basic existence results for minimizers with sufficiently small masses. For certain ranges of the exponent in the kernel we also obtain non-existence results for sufficiently large masses, as well as a characterization of minimizers as balls for sufficiently small masses and low spatial dimensionality. The physically important special case of three space dimensions and Coulombic repulsion is included in all the results mentioned above. In particular, our work yields a negative answer to the question if stable atomic nuclei at arbitrarily high atomic numbers can exist in the framework of the classical liquid drop model of nuclear matter. In all cases the minimal energy scales linearly with mass for large masses, even if the infimum of energy may not be attained.
Generic models of renewable resources in commercial transient stability programs – new models, new dynamics, and recent experiences
Creators: Pouyan Pourbeik
Deepak Ramasubramanian
Wei Du
Leonardo Lima
Hossein Ashourian
Publisher: name: IEEE
Year: 2024

The objectives of the panel are to present and discuss the most recent generic models used in commercial transient stability programs – their structure and dynamic characteristics, and to disseminate the experiences acquired using such models.
The objectives of the panel are to present and discuss the most recent generic models used in commercial transient stability programs – their structure and dynamic characteristics, and to disseminate the experiences acquired using such models.
Long-Term Image Boundary Prediction
Creators: name: Bhattacharyya, Apratim
name: Malinowski, Mateusz
name: Schiele, Bernt
name: Fritz, Mario
Publisher: name: CISPA
Year: 2023

description: Boundary estimation in images and videos has been a very active topic of research, and organizing visual information into boundaries and segments is believed to be a corner stone of visual perception. While prior work has focused on estimating boundaries for observed frames, our work aims at predicting boundaries of future unobserved frames. This requires our model to learn about the fate of boundaries and corresponding motion patterns -- including a notion of "intuitive physics". We experiment on natural video sequences along with synthetic sequences with deterministic physics-based and agent-based motions. While not being our primary goal, we also show that fusion of RGB and boundary prediction leads to improved RGB predictions.
Analytical $ππ$ scattering amplitude and the light scalars-II
Creators: name: Achasov, N. N.
name: Kiselev, A. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In the paper Phys. Rev. {\bf D83}, 054008 (2011) we constructed the $ππ$ scattering amplitude $T^0_0$ with regular analytical properties in the $s$ complex plane, describing both experimental data and the results based on chiral expansion and Roy equations. Now the results obtained during development of our work are presented. We dwell on questions dealing with the low $σ-f_0$ mixing, inelasticity description and the kaon loop model for $ϕ\to γ(σ+f_0)$ reaction, and show a number of new fits. In particular, we show that the minimization of the $σ-f_0$ mixing results in the four-quark scenario for light scalars: the $σ$(600) coupling with the $K\bar K$ channel is suppressed relatively to the coupling with the $ππ$ channel, and the $f_0$(980) coupling with the $ππ$ channel is suppressed relatively to the coupling with the $K\bar K$ channel. The correct analytical properties of the $ππ$ scattering amplitude are reached with the help of rather complicated background function. We also suggest much more simple background parameterization, practically preserving the resonance features, which is comfortable for experimental data analysis, but allows to describe the results based on chiral expansion and Roy equations only on the real $s$ axis.
description: 24 pages, 50 figures, 7 tables
Spectral functions of two-band spinless fermion and single-band spin-1/2 fermion models
Creators: name: Orignac, Edmond
name: Tsuchiizu, Masahisa
name: Suzumura, Yoshikazu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We examine zero-temperature one-particle spectral functions for the one-dimensional two-band spinless fermions with different velocities and general forward-scattering interactions. By using the bosonization technique and diagonalizing the model to two Tomonaga-Luttinger-liquid Hamiltonians, we obtain general expressions for the spectral functions which are given in terms of the Appell hypergeometric functions. For the case of identical two-band fermions, corresponding to the SU(2) symmetric spin-1/2 fermions with repulsive interactions,the spectral functions can be expressed in terms of the Gauss hypergeometric functions and are shown to recover the double-peak structure suggesting the well-known "spin-charge" separation. By tuning the difference in velocities for the two-band fermions, we clarify the crossover in spectral functions from the "spin-charge" separation to the decoupled fermions. We discuss the relevance of our results to the spin-1/2 Hubbard model under a magnetic field which can be mapped onto two-band spinless fermions.
description: RevTeX 4, 18 pages, 11 Encapsulated Postscript figures (v2) fig. 9 replaced for compatibility with PDF generation (v3) new references added
3D Magnetic Analysis of the CMS Magnet
Creators: name: Klyukhin, V. I.
name: Campi, D.
name: Curé, B.
name: Desirelli, A.
name: Farinon, S.
name: Gerwig, H.
name: Green, D.
name: Grillet, J. P.
name: Hervé, A.
name: Kircher, F.
name: Levesy, B.
name: Loveless, R.
name: Smith, R. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The CMS magnetic system consists of a super-conducting solenoid coil, 12.5 m long and 6 m free bore diameter, and of an iron flux-return yoke, which includes the central barrel, two end-caps and the ferromagnetic parts of the hadronic forward calorimeter. The magnetic flux density in the center of the solenoid is 4 T. To carry out the magnetic analysis of the CMS magnetic system, several 3D models were developed to perform magnetic field and force calculations using the Vector Fields code TOSCA. The analysis includes a study of the general field behavior, the calculation of the forces on the coil generated by small axial, radial displacements and angular tilts, the calculation of the forces on the ferromagnetic parts, the calculation of the fringe field outside the magnetic system, and a study of the field level in the chimneys for the current leads and the cryogenic lines. A procedure to reconstruct the field inside a cylindrical volume starting from the values of the magnetic flux density on the cylinder surface is considered. Special TOSCA-GEANT interface tools have being developed to input the calculated magnetic field into the detector simulation package.
description: 4 pages, 6 figures, 1 equation, 14 references
Histone deacetylase 6 inhibition exploits selective metabolic vulnerabilities in LKB1 mutant, KRAS driven non-small cell lung cancer
Creators: name: Zhang, Hua
name: Nabel, Christopher
S.
name: Li, Dezhi
name: Í. O’Connor, Ruth
name: R. Crosby, Caroline
name: M. Chang, Sarah
name: Hao, Yuan
name: Stanley, Robyn
name: Sahu, Soumyadip
name: S.Levin, Daniel
name: Chen, Ting
name: Tang, Sittinon
name: Huang, Hsin-Yi
name: Meynardie, Mary
name: Stephens, Janaye
name: Sherman, Fiona
name: Chafitz, Alison
name: Costelloe, Naoise
name: Rodrigues, Daniel A
name: Fogarty, Hilda
name: KIERNAN, MIRANDA
name: Cronin, Fiona
name: Papadopoulos, Eleni
name: Ploszaj, Magdalena
name: Weerasekara, Vajira
name: Deng, Jiehui
name: KIELY, PATRICK
name: Bardeesy, Nabeel
name: Heiden, Matthew G. Vander
name: Ni Chonghaile, Triona
name: DOWLING, CATRIONA
name: Wong, Kwok-Kin
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: IntroductionIn KRAS-mutant NSCLC, co-occurring alterations in LKB1 confer a negative prognosis compared with other mutations such as TP53. LKB1 is a tumor suppressor that coordinates several signaling pathways in response to energetic stress. Our recent work on pharmacologic and genetic inhibition of histone deacetylase 6 (HDAC6) revealed the impaired activity of numerous enzymes involved in glycolysis. On the basis of these previous findings, we explored the therapeutic window for HDAC6 inhibition in metabolically-active KRAS-mutant lung tumors.MethodsUsing cell lines derived from mouse autochthonous tumors bearing the KRAS/LKB1 (KL) and KRAS/TP53 mutant genotypes to control for confounding germline and somatic mutations in human models, we characterize the metabolic phenotypes at baseline and in response to HDAC6 inhibition. The impact of HDAC6 inhibition was measured on cancer cell growth in vitro and on tumor growth in vivo.ResultsSurprisingly, KL-mutant cells revealed reduced levels of redox-sensitive cofactors at baseline. This is associated with increased sensitivity to pharmacologic HDAC6 inhibition with ACY-1215 and blunted ability to increase compensatory metabolism and buffer oxidative stress. Seeking synergistic metabolic combination treatments, we found enhanced cell killing and antitumor efficacy with glutaminase inhibition in KL lung cancer models in vitro and in vivo.ConclusionsExploring the differential metabolism of KL and KRAS/TP53-mutant NSCLC, we identified decreased metabolic reserve in KL-mutant tumors. HDAC6 inhibition exploited a therapeutic window in KL NSCLC on the basis of a diminished ability to compensate for impaired glycolysis, nominating a novel strategy for the treatment of KRAS-mutant NSCLC with co-occurring LKB1 mutations.
Pressure balance at the magnetopause: Experimental studies
Creators: name: Suvorova, A. V.
name: Dmitriev, A. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The pressure balance at the magnetopause is formed by magnetic field and plasma in the magnetosheath, on one side, and inside the magnetosphere, on the other side. In the approach of dipole earth's magnetic field configuration and gas-dynamics solar wind flowing around the magnetosphere, the pressure balance predicts that the magnetopause distance R depends on solar wind dynamic pressure Pd as a power low R ~ Pd^alpha, where the exponent alpha=-1/6. In the real magnetosphere the magnetic filed is contributed by additional sources: Chapman-Ferraro current system, field-aligned currents, tail current, and storm-time ring current. Net contribution of those sources depends on particular magnetospheric region and varies with solar wind conditions and geomagnetic activity. As a result, the parameters of pressure balance, including power index alpha, depend on both the local position at the magnetopause and geomagnetic activity. In addition, the pressure balance can be affected by a non-linear transfer of the solar wind energy to the magnetosheath, especially for quasi-radial regime of the subsolar bow shock formation proper for the interplanetary magnetic field vector aligned with the solar wind plasma flow.
description: 8 pages, 2 figures
Transferring Tests Across Web Applications
Creators: name: Rau, Andreas
name: Hotzkow, Jenny
name: Zeller, Andreas
Publisher: name: CISPA
Year: 2023

description: When manually testing Web applications, humans can go with vague, yet general instructions, such as ``add the product to shopping cart and proceed to checkout''. Can we teach a robot to follow such instructions as well? We show how to leverage tests of other applications to guide test generation for new applications in the same domain: Given a test for payments on Amazon, we guide test generation on eBay towards payment functionality, exploiting the semantic similarity between UI elements across both applications. Evaluated on twelve Web apps in three domains, our approach allows for discovering deep functionality in a few minutes, where an undirected crawler would require days or weeks to accomplish the same task.
Seismic Strengthening of Unreinforced Masonry Structures Using Eco-friendly Ductile Cementitious Composite Repair Material
Creators: name: Kaheh, Pedram
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: EDCC
subject: Seismic Strengthening
subject: Unreinforced Masonry
subject: Shake Table
subject: Quasi-static
subject: Free Vibration
subject: Engineering--Civil

description: Masonry has been used to construct different kinds of structures for thousands of years. Unreinforced masonry structures suffer from low tensile strength and low ductility due to the absence of steel. Therefore, during an earthquake unreinforced masonry structures are more prone to damage than reinforced ones. In addition, many masonry structures are, or become, unsafe due to weathering, poor maintenance and inefficient structural systems for resisting lateral load. In masonry structures, the walls are usually the main structural elements expected to resist the lateral forces and to dissipate the earthquake input energy. Existing masonry structures in seismic areas that do not comply with the new earthquake building regulations typically need to be strengthened and retrofitted to increase their survivability during an earthquake. The intent of the research described in this thesis was to find a simple, eco-friendly, sustainable way of strengthening existing unreinforced masonry structures in areas of Canada where earthquakes are known to happen, such as schools and low-rise office complexes in British Columbia (BC). The experimental study investigated the effects of bonding Eco-friendly Ductile Cementitious Composite (EDCC) repair material to the surfaces of plain, concrete-block masonry walls (not reinforced with steel) on the structural behaviour of those walls. The research was part of a collaborative study between researchers at the Universities of British Columbia, Calgary and Manitoba. The study involved development of the EDCC repair material and a wide range of material and structural tests. This research was on the structural testing, including quasi-static, free vibration and shake table tests. In total, thirty large scale specimens representing masonry walls in schools in BC were tested during my part of the research. Of the thirty specimens, fifteen specimens have been tested under free vibration and quasi-static loading conditions. The shake table at the University of Calgary was used to simulate ground motions for testing the remaining specimens, including eleven straight walls, two U-shaped specimens, and two L-shaped specimens. This experimental study has provided new results and findings in the field of structural engineering to improve the quality of unreinforced masonry structures in Canada and has also opened up a new field with regard to the application of binders with much reduced Portland cement to decrease carbon dioxide emissions due to the production of Portland cement.
Platinum thickness dependence of the inverse spin-Hall voltage from spin pumping in a hybrid YIG/Pt system
Creators: name: Castel, Vincent
name: Vlietstra, Nynke
name: Youssef, Jamal Ben
name: van Wees, Bart J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show the first experimental observation of the platinum (Pt) thickness dependence in a hybrid YIG/Pt system of the inverse spin-Hall effect from spin pumping, over a large frequency range and for different rf powers. From the measurement of the dc voltage ($Δ\textrm{V}$) at the resonant condition and the resistance ($R$) of the Pt layer, a strong enhancement of the ratio $Δ\textrm{V}/R$ has been observed, which is not in agreement with previous studies on the NiFe/Pt system. The origin of this behaviour is still unclear and cannot be explained by the spin transport model that we have used.
description: 4 pages, 3 figures
Ligand-independent activation of steroid hormone receptors by gonadotropin-releasing hormone
Creators: name: Chen, Junling
Publisher: name: University of British Columbia
Year: 2011

description: Nuclear receptors including estrogen receptors (ERs) and progesterone receptors (PRs) are activated by their ligands as well as by signaling pathways in response to peptide hormones and growth factors. In gonadotrophs, gonadotropin releasing hormones (GnRHs) act via the GnRH receptor (GnRHR). Both GnRH-I and GnRH-II activate an estrogen response element (ERE)-driven luciferase reporter gene in LβT2 mouse pituitary cells, and GnRH-I is more potent in this regard. The ERα is phosphorylated at Ser¹¹⁸ in the nucleus and at Ser¹⁶⁷ in both nucleus and cytoplasm after GnRI-I treatments, and this coincides with increased ERct binding to its co-activator, the P300/CBP-associated factor (PCAF). Most importantly, both GnRH subtypes robustly up-regulate expression of the immediate early response gene, Fosb, while co-treatment with ERα siRNA or PCAF siRNA attenuates this effect. This appears to occur at the transcriptional level because co-recruitment of ERα and PCAF to an ERE within the endogenous Fosb promoter is increased by GnRH treatments, as shown by chromatin immunoprecipitation assays. Furthermore, cross-talk between GnRH-I and PR accentuates gonadotropin production. GnRH-I activates a progesterone response element (PRE)-driven luciferase reporter gene and gonadotropin a subunit (Gsua) gene expression in two mouse gonadotroph cell lines, αT3-1 and LβT2. Up-regulation of the PRE-luciferase reporter gene by GnRH-I is attenuated by pre-treatment with protein kinase A (H89) and protein kinase C (GF109203X) inhibitors, while only GF109203X inhibits GnRH-1-induced Gsua mRNA levels. In both cell lines within the same time-frame, knockdown of PR levels by siRNA reduces GnRH-I activation of Gsua mRNA levels by approximately 40%. Both GnRH-I and GnRH-II also increase mouse Gnrhr-luciferase promoter activity and this is significantly reduced by knockdown of PR in LβT2 cells. We conclude that the effects of GnRH-I on Fosb and Gsua expression, as well as mouse Gnrhr promoter activity in mouse gonadotrophs are mediated by ligand-independent activation of ERα and PR. These ligand-independent effects of GnRHs on steroid hormone receptor function may influence the magnitude of changes in the expression of specific genes in the pituitary during the mouse estrous cycle, which in this context may serve as a model in the human menstrual cycle.