cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Технико-экономические аспекты развития электромашиностроения с учетом направлений развития электроэнергетики
Creators: name: Владимировна, Шевченко Валентина
name: Панченко М.А.
Publisher: name: Zenodo
Year: 2013
Subjects: энергосбережение
реактивная мощность
компенсирующие устройства
турбогенераторы
ТГ

description: На русском: [Шевченко В.В., Панченко М.А. Технико-экономические аспекты развития электромашиностроения с учетом направлений развития электроэнергетики // Материалы 5-й межвузовской научно-технической конференции преподавателей, молодых ученых и студентов "Энерго- и ресурсосберегающие технологии при эксплуатации машин и оборудования", 11-12 декабря 2013 года, секция "Энергосберегающие и ресурсосберегающие технологии". - Украина, Донецк: Донецкий институт железнодорожного транспорта, 2013. - С. 6-7. https://doi.org/10.5281/zenodo.2555495]

Для выхода Украины из эколого-энергетического кризиса необходимо одновременно использовать энергосбережение и повышение КПД электрооборудования. Обсуждаются возможности электромашиностроительной отрасли.

Ключевые слова: энергосбережение, реактивная мощность, компенсирующие устройства, турбогенераторы.

Репозиторий НТУ "ХПИ" - открыть pdf
Tightly coupled MEMS INS/GPS integration with INS aided receiver tracking loops
Creators: name: Yang, Yong
Publisher: name: University of Calgary
Year: 2008

description: Bibilography: p. 162-173
description: some pages are in colour
description: Global Positioning System (GPS) receiver positioning capabilities are being challenged by increasing requirements on positioning and navigation under environments with GPS attenuated signal. This dissertation focuses on the performance enhancement of MEMS INS/GPS integrated navigation systems in signal-attenuated environments. MEMS INS/GPS tightly coup led integration with INS Doppler aided carrier tracking loops is studied in this dissertation. Based on an analysis of the conventional carrier tracking loop, carrier tracking capability is enhanced by using INS Doppler aiding. INS aided tracking is implemented by adding INS Doppler estimates to the receiver NCO. To theoretically analyze the performance of aided tracking loop, an IS signal simulator is developed. With helps from the simulator, the analysis concludes that INS aiding can effectively improve a standard GPS receiver tracking performance in weak signals and high dynamics environments. An EKF based MEMS I S/GPS tight integration scheme is used to control aiding errors from a MEMS based INS to the tracking loop. The tightly coupled INS/GPS can work well under the environment of fewer than four satellites. By using non-holonomic constraint for land vehicle applications, the position accuracy can be improved by around 60%. Furthermore, a novel pseudo-signal generation method is proposed to fulfill one gyro and 2 accelero meter. ( I G2A) suboptima l INS configuration . The proposed suboptimal I S/GPS tight integration can maintain the system poitioning enor within 7m, 27m, 38m, or 40m durin g 30s GPS signal outages, with 3, 2, l or O satellite(s) inview, respectively. With the error control by an EKF with INS/GPS tight scheme, MEMS INS Doppler aiding can achieve an additional 3dB - H z margin for the receiver signal tracking, allowing signals with power as weak as 24dB - H z . Furthermore, compared with the conventional tight integration, the position accuracy of the tight INS/GPS integration with aided tracking loops is improved under attenuated signal environments.
Investigation of Volumetric Modulated Arc Therapy Dosimetry: from Planning to Delivery
Creators: name: Sun, Lingyue
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Treatment planning
subject: Treatment delivery
subject: Volumetric modulated arc therapy
subject: Oncology
subject: Chemistry--Radiation
subject: Physics

description: Volumetric modulated arc therapy (VMAT) for cancer treatment uses high-energy radiation to kill malignant cells. The general goal is to deliver a high and conformal dose to the target while minimizing dose to organs-at-risk. This thesis focuses on two areas in VMAT: developing high quality treatment plans and assessing the dosimetric impact of delivering pre-designed plans to patients whose anatomy and position change during treatment. Firstly, a quantitative assessment was made by comparing prostate plans optimized with and without a planning target volume upper dose constraint. It was found that removing the target dose uniformity requirement resulted in better rectum sparing and improved tumor control probability. Secondly, the impact of body contour changes on dose distributions for prostate and head and neck VMAT plans was examined. Rules of thumb for dose percentage change and isodose line shift were developed and body contour changes unlikely to require further investigations were addressed.
Universality of short-range nucleon-nucleon correlations
Creators: name: Feldmeier, H.
name: Horiuchi, W.
name: Neff, T.
name: Suzuki, Y.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Short-range correlations between nucleon pairs in different spin-isospin channels are investigated for light nuclei using the Argonne V8' interaction. At distances below 1 fm a universal behavior is found for the deuteron, 3H, 3He and for ground and first excited states in 4He. This behavior in coordinate space is reflected by a universal behavior for the high-momentum components in momentum space. The universality indicates that a pairwise renormalization is possible in order to obtain a universal effective two-body interaction that does not scatter to high momentum states. The exact two-body densities are compared with those obtained using the unitary correlation operator method with simple trial wave functions. The effect of three-body correlations due to the tensor force on the two-body densities is discussed.
description: 13 pages, 17 figures, journal version
Identification and expression analysis of capsaicin biosynthesis pathway genes at genome level in Capsicum chinense
Creators: name: Zhang, Wei
name: Wu, Dan
name: Zhang, Liping
name: Zhao, Chengzhi
name: Shu, Huangying
name: Cheng, Shanhan
name: Wang, Zhiwei
name: Zhu, Jie
name: Liu, Pingwu
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: Capsicum chinense is one of the best ingredients for making chili sauces and extracting capsaicin. In this study, we identified 59 genes associated with shikimic acid, phenylpropane, unsaturated fatty acids, phenylalanine, valine, leucine, isoleucine and other metabolic pathways based on pepper genome. In the present study, 58 of the 59 genes involved in capsaicin synthesis were found to be unevenly distributed on 11 chromosomes, and several genes with the same number of exons and high homology were found to be clustered in a duplication region of the chromosome. The promoter regions of these genes were predicted and analyzed, and multiple gene promoters were found to contain MYB binding sites, which provided a reference for the subsequent exploration of MYB target genes. At the same time, the expression levels of genes related to capsaicin synthesis were analyzed based on different transcriptomes, and it was found that these genes showed significant differences in different plant development stages and different tissues. The results of this study will be helpful to further study the synthesis mechanism of capsaicin in Capsicum chinense and the functional relationship between genes.
On large maximal partial ovoids of the parabolic quadric $\q(4,q)$
Creators: name: De Beule, Jan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B25, 51D20, 51E12, 51E20, 51E21

description: We use the representation $T_2(O)$ for $\q(4,q)$ to show that maximal partial ovoids of $\q(4,q)$ of size $q^2-1$, $q=p^h$, $p$ odd prime, $h > 1$, do not exist. Although this was known before, we give a slightly alternative proof, also resulting in more combinatorial information of the known examples for $q$ prime.
description: 11 pp
Possible $J^{PC} = 0^{+-}$ Exotic State
Creators: name: Du, Meng-Lin
name: Chen, Wei
name: Chen, Xiao-Lin
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the possible exotic states with $J^{PC} = 0^{+-}$ using the tetraquark interpolating currents with the QCD sum rule approach. The extracted masses are around 4.85 GeV for the charmonium-like states and 11.25 GeV for the bottomomium-like states. There is no working region for the light tetraquark currents, which implies the light $0^{+-}$ state may not exist below 2 GeV.
description: 13 pages, 11 figures, 2 tables
Supplementary document for Microsphere-assisted super-resolved hyperspectral microscopy - 6713798.pdf
Creators: name: Mollaei, Mina
name: Soltani, Peyman
name: Panahi, Majid
name: Moradi, Ali-Reza
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Microsphere-assisted super-resolved hyperspectral microscopy
Catalytic Upgrading of Low Cost Carbon Resources Under Methane Environment
Creators: name: Wang, Aiguo
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: zeolite
subject: Catalysis
subject: Methane
subject: Biomass
subject: Aromatics
subject: Model compounds
subject: Energy
subject: Engineering--Chemical
subject: Engineering--Environmental
subject: Materials Science
subject: Engineering--Petroleum

description: The heavy reliance on fossil fuels raises concerns about economic stability and environmental impact, making it desirable to find a renewable energy source that is cost competitive with traditional fuels. Catalytic conversion of low cost carbon resources such as biomass into biofuels and valuable chemicals has the potential of alleviating the dependence on fossil fuels. However, due to high oxygen content of biomass, the upgraded products are highly oxygenated and disadvantageous. The presence of oxygenated compounds, such as alcohols, carboxylic acids, phenolics, and furans, results in the products with low energy density, poor quality as well as incompatibility infrastructure. Hydrodeoxygenation is an efficient method to improve the quality of biomass-derived products by oxygen elimination. However, it requires high operating pressure and substantial consumption of expensive and unavailable hydrogen, which makes this process unpractical and economically unfeasible in a large scale. Methane, as the main component in natural gas that is an abundant natural resource present in Canada, is an ideal alternative to hydrogen for the valorization of bio-derived products. Methane (CH4) with the highest H/Ceff ratio could benefit the formation of hydrocarbon products with higher energy density and reduce the coke formation. The activation of methane can provide hydrogen atoms for the deoxygenation of oxygenated chemical compounds, and methyl moieties to form the aromatic hydrocarbons, thus improve the quality and yield of liquid products. Due to the complexity of biomass, several model compounds including ethanol, acetic acid, phenol, furfural, cellulose and lignin representing different functional groups, are selected to investigate the technical feasibility of catalytic co-conversion of bio-based compounds and methane to valuable aromatic hydrocarbons. Mechanistic investigations such as liquid and solid-state 1H, 2H and 13C NMR combined with experimental analyses evidence methane incorporation into aromatic products. Various catalyst characterizations including XRD, TEM, DRIFT, NH3-TPD, XPS, and XAS, are employed to reveal the relationship between the physicochemical properties of the catalyst and its excellent performance. The mechanistic understanding provides valuable insights into the catalytic chemistry of biomass valorization with methane, and the rational design of catalysts for cost-efficient utilizations of biomass and natural gas resources.
Causality bounds for neutron-proton scattering
Creators: name: Elhatisari, Serdar
name: Lee, Dean
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider the constraints of causality and unitarity for the low-energy interactions of protons and neutrons. We derive a general theorem that non-vanishing partial-wave mixing cannot be reproduced with zero-range interactions without violating causality or unitarity. We define and calculate interaction length scales which we call the causal range and the Cauchy-Schwarz range for all spin channels up to J = 3. For some channels we find that these length scales are as large as 5 fm. We investigate the origin of these large lengths and discuss their significance for the choice of momentum cutoff scales in effective field theory and universality in many-body Fermi systems.
description: 36 pages, 10 figures, 7 tables, version to appear in Eur. Phys. J. A
Biomechanical analysis of assisted sit to stand
Creators: name: Jeyasurya, Jeswin
Publisher: name: University of British Columbia
Year: 2011

description: A significant number of non-institutionalized older adults have difficulty rising from a chair. Although there exist several assistive devices to aid with sit to stand, there is a lack of research that compares and analyzes various modes of assisted sit to stand to characterize their relative effectiveness in terms of biomechanical metrics. In addition, few existing assistive devices have been designed specifically to share between the user and the device the force required to rise, an approach that has the benefit of maintaining both the mobility and muscular strength of the user. This thesis advances our understanding of different modes of load-sharing sit to stand through empirical quantification. A specially-designed sit-to-stand test bed with load sharing capabilities was fabricated for human-subjects experiments. In addition to an unassisted rise and a static assist using a grab bar, three mechatronic modes of assist, at the seat, waist and arms, were implemented. The test bed employs a closed-loop load-sharing control scheme to require a user to provide a portion of the effort needed for a successful rise motion. Experiments were performed with 17 healthy older adults using the five aforementioned modes of rise. Force and kinematic sensor measurements obtained during the rise were used as inputs into a biomechanical model of each subject, and each mode of rise was evaluated based on key biomechanical metrics extracted from this model relating to stability, knee effort reduction, and rise trajectory. In addition, a questionnaire was administered to determine subjective response to and preference for each rise type. Results show that the seat and waist assists provide statistically significant improvements in terms of stability and knee effort reduction, while the arm and bar assists do not provide any biomechanical improvement from the unassisted rise. The assists most preferred by the subject were the seat and bar assists. Because of subject preference and biomechanical improvements, of the modes tested, the seat assist was determined to be the best mode of providing assistance with sit to stand.
Colorado water, June 1997
Creators: name: Mauch, Jennifer
name: Schmidt, Laurie
name: Miller, Shirley
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 1997
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The scope of the newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the research universities in the state.
description: Newsletter of the Colorado Water Resources Research Institute.
Performance Analysis and Improvement in UNIX File System Tree Traversal
Creators: name: Smith, Jonathan M.
Publisher: name: Columbia University
Year: 1988
Subjects: Computer science

description: A utility program has been developed to aid UNIX system administrators in obtaining information about mounted file systems. The program gathers the information by a traversal of the accessible nodes in the file hierarchy; without kernel-recorded path names, this is the only way to dynamically determine mount-point names. The program has had three significant versions, the second and third of which were driven by performance requirements rather than functional requirements. The original version showed a factor of 7 improvements over the performance of a naive tree traversal. The second iteration showed a factor of 10 improvements over the previous version by using extra information about the structure of the file system tree to prune unnecessary branches from the traversal. The third iteration showed another factor of 3 improvements by changing the search strategy. The performance improvements depend on an analysis described in this report. Since the program's main task is traversal of a UNIX file system tree, our experience can be generalized to other such searches.
The effect of premature return to play on recurrent injury in elite adolescent ice hockey and associated psychosocial predictors
Creators: name: Mckay, Carly
Publisher: name: Kinesiology
Year: 2008

description: Bibliography: p. 141-153
description: This study examined risk factors for injury in 316 elite adolescent hockey players. The risk of injury associated with age and skill level was determined. Athletic identity, attitudes toward body checking, competitive state anxiety, rumination, and fear were investigated as risk factors for injury. These factors were also assessed as risk factors for subsequent injury following return to play. The effect of return to play prior to medical clearance on subsequent injury rates was examined. Bantam (age 13-14) players had higher risk of injury than Midget players (age 15-16), and risk increased with increasing skill. Players below the 25th percentile in athletic identity were at higher risk of a first injury, but those above the 75th percentile were at higher risk of subsequent injury. Early return to play was not significantly associated with subsequent injury. Anxiety, rumination, and fear did not affect injury rates. These relationships may require further investigation.
Who am I now? The changing roles of husbands, wives, and children in mixed-marriage families in Nazi Germany
Creators: name: Reynoso, Adriana
Publisher: name: University of British Columbia
Year: 2011

description: This thesis examines the human impact of Nazi policy on mixed marriages in Germany, especially the psychological and emotional effects that this policy had on spouses and children in these families. The Nazi regime wanted to remove all Jewish persons from the Reich in an effort to uphold the rhetoric of “racial purity” and maintain the supposed superiority of the so-called Aryan race. Intermarriage between Germans of Jewish and Christian faiths made this goal much more difficult than the regime had anticipated. Intermarried Germans were not so easily convinced of the correctness of Nazi rhetoric, so the regime enacted policies and regulations that attempted to convince mixed couples that divorce was their best option. These policies prevented any future intermarriages and criminalized “racial mixing” while simultaneously promoting the action of divorce. Most intermarried Germans refused to divorce their Jewish spouses, however, and faced dire consequences because of this refusal. To access their experiences, this thesis examines memoirs and diaries written by children and wives of mixed-marriage families as a means of exploring the emotional and psychological effects of getting divorced or remaining married. This thesis argues that these effects were made evident in a change of each family member’s sense of self with respect to their designated role within the family unit as a result of the Nazi policies on intermarriage. Women in this situation often emerged as the emotional mainstays of their families while men-whether Aryan or Jewish- were deeply damaged by their inability to continue their traditional role of protector and provider.
Funerary inscription for Marcus Limbricius and his wife Helvia Arura
Creators: name: Prag, Jonathan
Publisher: name: Zenodo
Year: 2020
Subjects: subject: Sicily
subject: epigraphy
subject: http://vocab.getty.edu/page/aat/300138808
subject: https://pleiades.stoa.org/places/462492

description: TEI EpiDoc record
Accuracy and Efficiency of Raytracing Photoionisation Algorithms
Creators: name: Mackey, Jonathan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Three non-equilibrium photoionisation algorithms for hydrodynamical grid-based simulation codes are compared in terms of accuracy, timestepping criteria, and parallel scaling. Explicit methods with first-order time accuracy for photon conservation must use very restrictive timestep criteria to accurately track R-type ionisation fronts. A second-order accurate algorithm is described which, although it requires more work per step, allows much longer timesteps and is consequently more efficient. Implicit methods allow ionisation fronts to cross many grid cells per timestep while maintaining photon conservation accuracy. It is shown, however, that errors are much larger for multi-frequency radiation than for monochromatic radiation with the implicit algorithm used here, and large errors accrue when an ionisation front crosses many optical depths in a single step. The accuracy and convergence rates of the different algorithms are tested with a large number of timestepping criteria to identify the best criterion for each algorithm. With these criteria selected, the second-order explicit algorithm is the most efficient of the three, and its parallel scaling is significantly better than that of the implicit algorithm. The upgrade from first- to second-order accuracy in explicit algorithms could be made very simply to fixed-grid and adaptive mesh-refinement codes which currently use a first-order method.
description: 14 pages, minor updates to match published version
Three Essays on China's Public Sector
Creators: name: Yan, Yan
Publisher: name: Arts
Year: 2018
Subjects: subject: Economics

description: This thesis is a collection of three essays examining the behavior and characteristics of China's public sector. The first chapter estimates public employees' corruption income in China. Benefited by a sudden institution change, both of the last two chapters study the consequences of decentralization: the second chapter investigates its effect on public expenditure, and the third chapter focuses on political turnover.
Projection Volumetric Display using Passive Optical Scatterers
Creators: name: Nayar, Shree K.
name: Anand, Vijay N.
Publisher: name: Columbia University
Year: 2006
Subjects: Computer science

description: In this paper, we present a new class of volumetric displays that can be used to display 3D objects. The basic approach is to trade-off the spatial resolution of a digital projector (or any light engine) to gain resolution in the third dimension. Rather than projecting an image onto a 2D screen, a depth-coded image is projected onto a 3D cloud of passive optical scatterers. The 3D point cloud is realized using a technique called Laser Induced Damage (LID), where each scatterer is a physical crack embedded in a block of glass or plastic. We show that when the point cloud is randomized in a specific manner, a very large fraction of the points are visible to the viewer irrespective of his/her viewing direction. We have developed an orthographic projection system that serves as the light engine for our volumetric displays. We have implemented several types of point clouds, each one designed to display a specific class of objects. These include a cloud with uniquely indexable points for the display of true 3D objects, a cloud with an independently indexable top layer and a dense extrusion volume to display extruded objects with arbitrarily textured top planes and a dense cloud for the display of purely extruded objects. In addition, we show how our approach can be used to extend simple video games to 3D. Finally, we have developed a 3D avatar in which videos of a face with expression changes are projected onto a static surface point cloud of the face.
The development and evaluation of a knee non-physician expert training curriculum
Creators: name: Chan, Denise Siew Fong
Publisher: name: Kinesiology
Year: 2008

description: Bibliography: p. 137-153
description: Background The future implementation of a new health care delivery model, the "Knee Injury Clinic," will help to improve access to care for knee injuries by involving certified athletic therapists in an expanded role as "Non-Physician Experts" (NPE). Purpose and Methodology Two certified athletic therapists were trained to become Knee NPEs through a defined curriculum to safely assess, diagnose, investigate and manage soft tissue knee injuries under the supervision of a sport medicine physician. The program followed a six-step curriculum design. Pre- and post-test multiple choice question (MCQ) and objective structured clinical exams (OSCE) were used to evaluate improvement in knowledge and clinical skills. Conclusions Average improvement of the learners' knowledge on the MCQ exam was 12.0%. Clinical skills improvement ranged from 29.7 to 37.3% on the OSCE. The results support the role of NPEs in the new health care delivery model. Key resources contributing to the success of this curriculum were also identified.
A File System Component Compiler
Creators: name: Zadok, Erez
Publisher: name: Columbia University
Year: 1997
Subjects: Computer science

description: File System development is a difficult and time consuming task, the results of which are rarely portable across operating systems. Several proposals to improve the vnode interface to allow for more flexible file system design and implementation have been made in recent years, but none is used in practice because they require costly fundamental changes to kernel interfaces, only operating systems vendors can make those changes, are still non-portable, tend to degrade performance, and do not appear to provide immediate return on such an investment. This proposal advocates a language for describing file systems, called FiST. The associated translator can generate portable C code — kernel resident or not — that implements the described file system. No kernel source code is needed and no existing vnode interface must change. The performance of the file systems automatically generated by FiST can be within a few percent of comparable hand-written file systems. The main benefits to automation are that development and maintenance costs are greatly reduced, and that it becomes practical to prototype, implement, test, debug, and compose a vastly larger set of such file systems with different properties. The proposed thesis will describe the language and its translator, use it to implement a few file systems on more than one platform, and evaluate the performance of the automatically generated code.
Policy Entrepreneurship: Understanding Fiscal Policy Change for the Alberta Oil Sands
Creators: name: Weber, Jessica Dawn Marie
Publisher: name: Arts
Year: 2018
Subjects: subject: Energy Policy
subject: Canadian Politics
subject: Alberta Politics
subject: Industry-Government Relations
subject: Petroleum Industry
subject: Federalism
subject: Political Science
subject: FOS: Political science

description: In 1995 and 1996 both the federal and provincial governments introduced major changes to their royalty and tax regimes for the Alberta oil sands industry. The stated goal of these reforms was to incentivize new investment. These changes came after decades of non-cooperation between the two levels of governments over oil sector policy and ignoring industry requests for fiscal reforms. Others have explained these changes as the result of a shift in priorities at high levels of government. However, there is no evidence that the policy change originated in government. Another explanation points to the creation of a new institution, the National Oil Sands Task Force. This is a partial explanation, but it does not ask explain how and why the Task Force was created. Using the policy entrepreneur model of policy change, this thesis provides an alternative explanation. Drawing on first-hand accounts from those who participated in the policy changes, interviews, and a contemporary newspaper analysis, this study concludes that a single person, Eric Newell, was a key factor—a successful policy entrepreneur—in achieving these reforms. The thesis documents how Newell determinedly created narratives, formed coalitions, and navigated multiple institutional venues to shape new fiscal policies for the oil sands industry.
Holographic Kondo Model in Various Dimensions
Creators: name: Benincasa, Paolo
name: Ramallo, Alfonso V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the addition of localised impurities to U(N) Supersymmetric Yang-Mills theories in (p+1)-dimensions by using the gauge/gravity correspondence. From the gravity side, the impurities are introduced by considering probe D(8-p)-branes extendingalong the time and radial directions and wrapping an (7-p)-dimensional submanifold of the internal (8-p)-sphere, so that the degrees of freedom are point-like from the gauge theory perspective. We analyse both the configuration in which the branes generate straight flux tubes -corresponding to actual single impurities - and the one in which connected flux tubes are created- corresponding to dimers. We discuss the thermodynamics of both the configurations and the related phase transition. In particular, the specific heat of the straight flux-tube configuration is negative for p<3, while it is never the case for the connected one. We study the stability of the system by looking at the impurity fluctuations. Finally, we characterise the theory by computing one- and two-point correlators of the gauge theory operators dual to the impurity fluctuations. Because of the underlying generalised conformal structure, such correlators can be expressed in terms of an effective coupling constant (which runs because of its dimensionality) and a generalised conformal dimension.
description: 56 pages, 3 figures; v2: typos corrected
Kinks in the electronic dispersion of the Hubbard model away from half filling
Creators: name: Grete, Patrick
name: Schmitt, Sebastian
name: Raas, Carsten
name: Anders, Frithjof B.
name: Uhrig, Götz S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study kinks in the electronic dispersion of a generic strongly correlated system by dynamic mean-field theory (DMFT). The focus is on doped systems away from particle-hole symmetry where valence fluctuations matter potentially. Three different algorithms are compared to asses their strengths and weaknesses, as well as to clearly distinguish physical features from algorithmic artifacts. Our findings extend a view previously established for half-filled systems where kinks reflect the coupling of the fermionic quasiparticles to emergent collective modes, which are identified here as spin fluctuations. Kinks are observed when strong spin fluctuations are present and, additionally, a separation of energy scales for spin and charge excitations exists. Both criteria are met by strongly correlated systems close to a Mott-insulator transition. The energies of the kinks and their doping dependence fit well to the kinks in the cuprates, which is surprising in view of the spatial correlations neglected by DMFT.
description: 13 pages, 15 figures
Testing the Elliott-Yafet spin-relaxation mechanism in KC8; a model system of biased graphene
Creators: name: Fábián, Gábor
name: Dóra, Balázs
name: Antal, Ágnes
name: Szolnoki, Lénárd
name: Korecz, László
name: Rockenbauer, Antal
name: Nemes, Norbert M.
name: Forró, László
name: Simon, Ferenc
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Temperature dependent electron spin resonance (ESR) measurements are reported on stage 1 potassium doped graphite, a model system of biased graphene. The ESR linewidth is nearly isotropic and although the g-factor has a sizeable anisotropy, its majority is shown to arise due to macroscopic magnetization. Albeit the homogeneous ESR linewidth shows an unusual, non-linear temperature dependence, it appears to be proportional to the resistivity which is a quadratic function of the temperature. These observations suggests the validity of the Elliott-Yafet relaxation mechanism in KC8 and allows to place KC8 on the empirical Beuneu-Monod plot among ordinary elemental metals.
description: 6 pages, 4 figures, submitted to Phys. Rev. B
Cache Conscious Indexing for Decision-Support in Main Memory
Creators: name: Rao, Jun
name: Ross, Kenneth A.
Publisher: name: Columbia University
Year: 1998
Subjects: Computer science

description: As random access memory gets cheaper, it becomes increasingly affordable to build computers with large main memories.We consider decision support workloads within the context of a main memory database system, and consider ways to enhance the performance of query evaluation. Indexes can potentially speed up a variety of operations in a database system. In our context, we are less concerned about incremental updating of the index, since we can rebuild indexes in response to batch updates relatively quickly. Our primary concerns are the time taken for a look-up, and the space occupied by the index structure. We study indexing techniques for main memory, including hash indexes,binary search trees, T-trees, B+-trees, interpolation search, and binary search on arrays. At one extreme, hash-indexes provide fast look-up but require a lot of space. At another extreme, binary search on an array requires no additional space beyond the array, but performs relatively poorly. An analysis of binary search on an array shows that it has poor reference locality, leading to many cache misses and slow look-up times. Our goal is to provide faster look-up times than binary search by paying better attention to reference locality and cache behavior,without using substantial extra space. We propose a new indexing technique called 'Cache-Sensitive Search Trees' (CSS-trees). Our technique stores a directory structure on top of a sorted array. The directory represents a balanced search tree stored itself as an array.Nodes in this search tree are designed to have size matching the cache-line size of the machine. Because we store the tree in an array Nodes in this search tree are designed to have size matching the cache-line size of the machine. Because we store the tree in an array structure, we do not have to store internal-node pointers; child nodes can be found by performing arithmetic on array offsets. We provide an analytic comparison of the algorithms based on their time and space requirements. We have implemented all of the techniques, and present a performance study on two popular modern machines. We demonstrate that with a small space overhead, we can reduce the cost of binary search on the array by more than a factor of two. We also show that our technique dominates B+-trees, T-trees, and binary search trees in terms of both space and time. Our performance graphs show significantly different rankings of algorithms than shown in a 1986 study by Lehman and Carey. The explanation of the difference is that during the last twelve years, the relative cost of a cache miss to that of a CPU instruction cycle has increased by two orders of magnitude. As a result, it is now much more important to design techniques with good cache behavior.
Colorado water, August 1996
Creators: name: Brady, Cindy
name: Eyre, Julie
name: Graf, David
name: Miller, Shirley
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 1996
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The scope of the newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the research universities in the state.
description: Newsletter of the Colorado Water Resources Research Institute.
Drivers’ Willingness to Engage Level 3 Vehicle Automation
Creators: name: TOMASEVIC, NEBOJSA
Publisher: name: Monash University
Year: 2021
Subjects: subject: 90204 Automotive Safety Engineering
subject: FOS: Mechanical engineering
subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: This research investigated driver’s willingness to engage vehicle automation in everyday driving situations. The introduction of automated vehicles promises to greatly reduce road fatalities and injuries and bring many other benefits to society. However, these benefits will not be realised if vehicle automation is not accepted, trusted and used appropriately by drivers. Using a newly-built automation driving simulator as the main research tool, four linked experiments were undertaken; from these, trust in automation, driver confidence and situation complexity were identified as key factors. The practical implications of this research will help the design and gradual implementation of automated vehicles.
Facilitating large groups where each participant contributes to the emergence of a common project
Creators: name: Balli, Fabio
Publisher: name: Zenodo
Year: 2023
Subjects: facilitation methods
team-building
training dynamics
open education
pedagogy of the oppressed
emerging change
open andragogy
co-creation
enovation

description: Two dynamics are often found in large groups. One is conferences, forums, congresses, symposiums and conventions; the other is hackathons, open forums, open cafes, unconferences and game jams. Unfortunately, these dynamics do not encourage the emergence of a common project. A third way is to co-create, out of individual realities, a common content. The commitment of each individual makes it possible to achieve a common result, while preserving the collective energy. This document presents six steps for creating such a dynamic. Version française
Recursive Tangential-Angular Operator as Analyzer of Synchronized Chaos
Creators: name: Makarenko, A. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: I.6.3
subject: 70K99, 74H65, 34C15, 34C14

description: A method for the quantitative analysis of the degree and parameters of synchronization of the chaotic oscillations in two coupled oscillators is proposed, which makes it possible to reveal a change in the structure of attractors. The proposed method is tested on a model system of two unidirectionally coupled logistic maps. It is shown that the method is robust with respect to both the presence of a low-intensity noise and a nonlinear distortion of the analyzed signal. Specific features of a rearranged structure of the attractor of a driven subsystem in the example under consideration have been studied.
description: 7 pages, 5 figures, An expanded and corrected version of article published in: Technical Physics Letters, 2011, Vol. 37, No. 8, pp. 784-788
Development of post-implant analysis methodologies for permanent breast seed implant
Creators: name: Watt, Elizabeth Rose
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: brachytherapy
subject: radiotherapy
subject: Breast Cancer
subject: Oncology
subject: Physics--Radiation

description: Permanent breast seed implant (PBSI) is a novel treatment technique for early-stage breast cancer. Post-lumpectomy, 103Pd seeds are permanently implanted in the patient’s breast as an alternative to standard fractionated whole breast irradiation. In recent years, the use of PBSI has grown internationally with several new clinics beginning to offer this technique to eligible women. In this thesis, we investigate several sources of uncertainty in PBSI post-implant analysis. While permanent implant brachytherapy procedures have been in clinical use in the prostate for several decades, implementation in the breast raised several new questions, particularly due to tissue mobility and different organs-at-risk. The protracted length of time over which the prescription dose is deposited renders this an important question in the context of post-implant analysis. We performed a study investigating the impact of patient arm position on resultant dosimetry, recommending imaging with the patient arm in the treatment position. Furthermore, we created a model of the dose deposition over the first two months post-implant to assess the most appropriate time to perform analysis, recommending approximately 30 days post-implant. To perform rigorous post-implant analysis, a process to reconstruct the implant and compare it to the plan is required. In this work, we developed an optimization algorithm to automate plan reconstruction and calculate indices pertaining to the geometric quality of the implant. This algorithm has also allowed us to analyze post-implant seed migration and assess any needle characteristics that may be predictive of increased migration. Prior to implanting radioactive seeds, quality assurance is performed to ensure the seeds are of an expected activity. In this work, we produced correction factors for air-kerma strength measurement of several seeds due to variations caused by altitude. In this thesis, we have made several recommendations for the performance of PBSI post-implant analysis. These recommendations have helped to improve patient convenience, by reducing their number of visits to the cancer centre; inter-centre consistency, by recommending time points and patient positioning for imaging studies; and facilitate implementation of post-implant analysis into the clinical analysis process.
Schafe im Weinbau – Eignung unterschiedlicher Rassen und mögliche Zuchtziele
Creators: name: Conrad, Lucas
name: Henke, Maverick
name: Hörl, Jakob
name: Luick, Rainer
name: Schoof, Nicolas
Publisher: name: Berichte über Landwirtschaft - Zeitschrift für Agrarpolitik und Landwirtschaft
Year: 2020

description: Der Einsatz von Schafen in Weingärten während der Vegetationsperiode erfährt in der Praxis aktuell eine relativ hohe Aufmerk­samkeit. Schafe können teils obligatorische weinbauliche Arbeitsschritte übernehmen und sind eine interessante Option für das Weinmarketing. Der Schafeinsatz birgt auch Risiken und Nach­teile, wie etwa den Aufwand, der sich fallweise aus der Tierhaltung und der noch defizitären Infor­mations­lage ergeben kann. In den häufigsten Reberziehungssystemen Mitteleuropas bestimmt die Schafrassenwahl entscheidend über potenzielle Risiken und Möglichkeiten. In der vor­liegenden Un­tersuchung wurden Rassen hinsichtlich ihrer Eignung für das Doppelnutzungsmodell eva­luiert. Dazu wurden zunächst die weinbaulich gewünschten Rassenmerkmale identifiziert. In der Un­tersuchung wurden anschließend 94 Herd­buchzüchter nach spezifischen Rassecharakteristika wie der Fähigkeit zum Zweibeinstand befragt. Für die Bewertung der Eignung einer Schafrasse ist die zu erwar­tende Verbisshöhe ent­scheidend. Sie definiert die potenzielle Einwirkung auf die Laubwand und de­terminiert die mögliche Beweidungsdauer im Sommer. Um die Äserhöhe zu bestim­men, wurden 179 Tiere von Herdbuchzüchtern vermessen. Als besonders geeignete Rassen für den Einsatz im Flachbogen-Spaliersystem wurden Shropshire dänischer Zuchtlinie sowie Southdown (nicht zu ver­wechseln mit „Babydoll“) identifiziert. Mit Abstrichen sind auch Ouessant-Schafe prinzipiell geeignet. Dies sind 3 der 27 hier be­handelten Rassen. Andere Rassen können im Sommer allenfalls kurzzeitig in einer mitteleuropäischen Rebanlage eingesetzt werden und erzwingen rasche Flächenwechsel. Die Zuchtziele für eine (neue) mittelrahmige (Kreuzungs-)Rasse wären die fehlende Fähigkeit zum Zweibeinstand, ein natürlicher Haarwechsel, Robustheit (auch gegen Kupfer) und eine gute Führigkeit.
description: Berichte über Landwirtschaft - Zeitschrift für Agrarpolitik und Landwirtschaft, Aktuelle Beiträge
Colorado water, June 1995
Creators: name: Miller, Shirley
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 1995
Subjects: subject: Water resources development -- Colorado
subject: Water-supply -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Management -- Colorado

description: The scope of the newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the research universities in the state.
description: Newsletter of the Colorado Water Resources Research Institute.
Aboriginal health education programs : examining sustainability
Creators: name: Wisener, Katherine Marie
Publisher: name: University of British Columbia
Year: 2011

description: Despite evidence supporting the ongoing provision of health education interventions in First Nations communities, there is a paucity of research that specifically addresses how these programs should be designed to ensure sustainability and long-term effects. Using a Community-Based Research approach, constructivist theories, and Indigenous methods, a collective case study was completed with three Canadian First Nations communities to address the following research question: What factors are related to sustainable health education programs, and how do they contribute to and/or inhibit program success in an Aboriginal context? A university-community partnership titled the Community Learning Centres (CLC) provided the context for the collective cases. CLC involved the development of three learning centres (CLCs), each of which provided community members with a physical space and online resources pertaining to culturally relevant health education. Semi-structured interviews and a sharing circle were completed with 19 participants, including members of community leadership, external partners, and program staff and users. Document review served to verify information described by participants. Analysis included a description of each case (within-case analysis) and a thematic analysis across cases (cross-case analysis). Seven factors were identified to either promote or inhibit CLC sustainability, including: 1) community uptake (if and how users access the CLC); 2) environmental factors (conditions within the CLC and the community); 3) stakeholder awareness and support (presence and extent of support exhibited by stakeholder groups); 4) presence of a champion (passionate leaders dedicated to CLC success); 5) availability of funding (ability to identify and allocate program funding); 6) fit and flexibility (CLCs’ ability to address user needs and community priorities), and; 7) capacity and capacity building (capacity to sustain the CLC and use learned skills to address other health education issues). These findings were integrated into practical sustainability tools where each factor was provided a working definition, influential moderators, key evaluation questions, and their relationship to other factors. These tools represent the development of a sustainability framework that is grounded in, and builds on existing research, and can be used by First Nations communities and universities to support effective sustainability planning for community-based health education intervention.