cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hamiltonian BF theory and projected Borromean Rings
Creators: name: Contreras, Ernesto
name: Díaz, Adalberto
name: Leal, Lorenzo
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: It is shown that the canonical formulation of the abelian BF theory in D = 3 allows to obtain topological invariants associated to curves and points in the plane. The method consists on finding the Hamiltonian on-shell of the theory coupled to external sources with support on curves and points in the spatial plane. We explicitly calculate a non-trivial invariant that could be seen as a "projection" of the Milnor's link invariant MU(1; 2; 3), and as such, it measures the entanglement of generalized (or projected) Borromeans Rings in the Euclidean plane.
description: 6 pages, 1 figure, typos corrected, figure corrected
Personalized Search of the Medical Literature: An Evaluation
Creators: name: Hatzivassiloglou, Vasileios
name: Teuel, Simone
name: Sigelman, Sergey
Publisher: name: Columbia University
Year: 2003
Subjects: Computer science

description: We describe a system for personalizing a set of medical journal articles (possibly created as the output of a search engine) by selecting those documents that specifically match a patient under care. Key element in our approach is the use of targeted parts of the electronic patient record to serve as a readily available user model for the personalization task. We discuss several enhancements to a TF*IDF based approach for measuring the similarity between articles and the patient record. We also present the results of an experiment involving almost 3,000 relevance judgments by medical doctors. Our evaluation establishes that the automated system surpasses in performance alternative methods for personalizing the set of articles, including keyword-based queries manually constructed by medical experts for this purpose.
Automated Tutoring in Interactive Environments: A Task Centered Approach
Creators: name: Wolz, Ursula
name: McKeown, Kathleen
name: Kaiser, Gail E.
Publisher: name: Columbia University
Year: 1988
Subjects: Computer science

description: Tutoring in interactive computing environments is sometimes more properly understood as consulting. A tutor's implied curriculum may be adaptable to the user's knowledge and experience but still not meet the user's immediate needs -- to get some task done. A consultant however, can dynamically adapt to address the task at hand. We present a user's goal-centered approach to tutoring in interactive environments, and describe how we automate certain tutoring strategies appropriate for consulting behavior. We have implemented our approach in GENIE, a question answering system for the Berkeley Unix Mail system. We focus on the pedagogical strategies employed by GENIE to best meet the user's immediate needs.
Provenance and Mineralogy of Sediments from the Early Cretaceous Bluesky Formation, Peace River Oil Sands, Alberta, Canada
Creators: name: McKinnon, Lynsey
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: The provenance of sediment in the McMurray Formation of the Athabasca Oil Sands has been widely studied, while the Bluesky Formation of the Peace River Oil Sands which holds significant deposits of heavy oil, has not been studied to the same extent. Mineralogy of the Bluesky Formation is also relatively poorly understood in the area and is important to evaluate due to steam-assisted gravity drainage methods used to optimize production. U-Pb geochronology ages from four samples were collected from the McMurray Formation and the Bluesky Formation. McMurray samples yielded similar results of sediment provenance determined in past studies, while the Bluesky Formation showed similarities and new date populations in comparison to previous data. The lower PR-1-Lagoon facies yielded age ranges of detrital zircons distributed from east-southeast-to-northwest and northwest-to-southeast drainage systems, while the lower secondary PR-1-Wave facies resulted in age ranges that changed to a more local southeast-to-northwest drainage system and northwest-to-southeast system from the Western Cordillera to a reintegration of the east-southeast-to-northwest and northwest-to-southeast drainage systems in the upper secondary PR-1-Wave facies due to transgressions and regressions of the Boreal sea and basin partitioning between the Assiniboia and Edmonton channels. Mineralogical assemblages of the Bluesky Formation was also studied using a combination of qualitative and quantitative analytical procedures including SEM, XRF and XRD, which determined that there is a complex mineralogy in comparison to the McMurray Formation. Kaolinite was the largely dominant clay type that fills pore space due to its vermicular form, while dawsonite was also abundant in large clusters that limits porosity. Quantitative results of XRD and XRF should be used together to evaluate mineral weight percentage as XRF shows a more reliable yield in data that isn’t effected by surface area of grains as much as XRD. Fractured framework grains and development of intragranular porosity suggests mechanical and chemical weathering and grain alteration, which are characteristic of faults in the area and hydrothermal fluid influx. Oil wells producing with the aid of steam assisted gravity drainage (SAGD) techniques should be monitored as porosity-decreasing dawsonite and kaolinite can form at temperatures up to and over 200ᵒC, which will impact overall production and operation of the well.
Colorado water, July/August 2009
Creators: name: Schmidt, Laurie
name: Colorado Water Institute, Publisher
Publisher: name: Mountain Scholar
Year: 2009
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the state's research universities.
description: Newsletter of the Water Center of Colorado State University. Theme: Natural hazards.
The carbon, water and energy balances of two lodgepole pine stands recovering from mountain pine beetle attack in British Columbia
Creators: name: Brown, Mathew
Publisher: name: University of British Columbia
Year: 2011

description: Over the past decade British Columbia (BC) has experienced the largest mountain pine beetle (MPB) outbreak on record. This study used the eddy covariance (EC) technique to examine the impact of the MPB outbreak on the net ecosystem production (NEP) and evapotranspiration (E) of two lodgepole pine stands in the central interior of BC from 2007 to 2010. MPB-06, an 85-year-old stand, and MPB-03, a 110-year-old stand, were first attacked by the beetle in 2006 and 2003, respectively. EC measurements were also made in two harvested stands, one in 2005 and one in 1997 (CC-05 and CC-97, respectively) during the 2007 growing season. Annual NEP increased from -81 to 64 g carbon (C) m-² from 2007 to 2010 at MPB-06 due to an increase in gross ecosystem photosynthesis (Pg). At MPB-03, annual NEP also varied with Pg, ranging from -57 g C m-² in 2007 to 6 g C m-² in 2009. Annual ecosystem respiration (Re) did not vary greatly over the four years at both sites. At MPB-03, Pg was reduced by drought in 2009 and 2010. The increase in Pg at both sites was due to an increase in the photosynthetic capacity of the surviving trees and vegetation, as shown by foliar net-assimilation measurements. Light response analysis indicated that daytime Re values derived using nighttime NEP data were likely realistic estimates of the actual respiratory fluxes. NEP measurements at CC-97 and CC-05, showed that these stands are likely to remain C sources for as many as 10 years following harvesting. There was little interannual variation in E at both sites as the surviving trees and vegetation compensated for reductions in E due to the death of the overstory. Root-zone drainage was much greater at MPB-03 than at MPB-06, due to larger P at MPB-03. Growing season water deficit showed both stands to be water limited in spite of the high proportion of dead pine trees. Results from this study showed the importance of the remaining healthy trees and vegetation in the recovery of these stands from MPB attack.
Verification of piezoresistive and piezoelectric properties in 2D transition-metal dichalcogenide PtSe2 and PtTe2 materials
Creators: name: Ko, Justin Sanghyeok
name: 0000-0002-4646-7832
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: 2D materials
PtSe2
PtTe2
Piezoresistivity
Piezoelectricity

description: Transition-metal dichalcogenide (TMD) materials have promising properties that make them suitable for wearable bioelectronics and biosensors. Specifically, the Platinum based TMD materials, PtSe2 and PtTe2, can be fabricated at low temperatures, allowing for growth on flexible substrates, such as polyimide film. Exploration of piezoresistivity and piezoelectricity in PtSe2 and PtTe2 can enable more applications for the novel 2D material. This report focuses on the experimental setup and results for the verification of the piezoresistive and piezoelectric property in PtSe2 and PtTe2. The piezoresistivity experiment focuses on the change in resistance in the material due to strain induced by bending using a two-point bending fixture. In the piezoelectricity experiment, samples are put in a periodic strain at 2 Hz with the voltage response of the material being measured using a digital oscilloscope. An analysis of the experimental results is discussed along with a proposal for further applications for using piezoelectric materials as energy-harvesting elements of the next-generation bioelectronics.
An Interpretive Ethnography: Nursing Culture for People with Dementia and Behavioral and Psychological Symptoms of Dementia in the Acute Care Environment
Creators: name: Hannaford, Sara Anne Dellarie
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Nursing
subject: FOS: Health sciences
subject: Dementia
subject: Ethnography
subject: Qualitative
subject: Acute Care
subject: Behavioral and Psychological Symptoms of Dementia
subject: Nursing

description: Objectives: Acute care nurses care for people with dementia (PWD) who suffer from behavioral and psychological symptoms of dementia (BPSD) in care environments that may worsen BPSD. The purpose of this study is to understand the nursing culture of care that exists for PWD with BPSD, and align this culture of care with the theory of person-centered dementia care (PCC). Methods: An interpretive ethnography approach was used, and data was collected on a general medicine unit at one acute hospital through 75 hours of participant observation and five semi-structured interviews with registered nurses and licensed practical nurses. Data was thematically analyzed. Results: A number of facilitators (teamwork, creativity, knowing the person, care plans, flexibility) and barriers (time constraints, safety, restraint use) for prevision of PCC to PWD and BPSD were identified. The culture of care for PWD with BPSD is shaped by formal protocols, informal protocols or unwritten rules, and beliefs about PWD and the nurses’ role in acute care. Nurses’ ability to provide PCC is limited by the incompatibility between the needs of the PWD and the acute care environment, and risk-averse safety culture that promotes physical safety over the needs and wants of the PWD. Conclusion: PWD with BPSD should be supported outside of the acute care environment when possible. The acute care environment needs to become more dementia friendly, and nurses need support and permission on a systems and individual level to re-conceptualize the meaning of risk for PWD with BPSD.
Epidemic Spreading in Weighted Networks: An Edge-Based Mean-Field Solution
Creators: name: Yang, Zimo
name: Zhou, Tao
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Weight distribution largely impacts the epidemic spreading taking place on top of networks. This paper studies a susceptible-infected-susceptible model on regular random networks with different kinds of weight distributions. Simulation results show that the more homogeneous weight distribution leads to higher epidemic prevalence, which, unfortunately, could not be captured by the traditional mean-field approximation. This paper gives an edge-based mean-field solution for general weight distribution, which can quantitatively reproduce the simulation results. This method could find its applications in characterizing the non-equilibrium steady states of dynamical processes on weighted networks.
description: 7 pages, 5 figures
Improved drilling efficiency technique using integrated pdm and pdc bit parameters
Creators: name: Motahhari, Hamed Reza
Publisher: name: University of Calgary
Year: 2008

description: Bibliography: p. 85-89
description: Some pages are in colour.
description: The rising application of Positive Displacement Motors (PDM) and Polycrystalline Diamond Compact (PDC) drilling bits in directional and horizontal drilling operations creates a demand for a simulator tool which enables the drilling engineer to simulate these operations in a pre-planning mode. Therefore, a new approach to model the motor/bit integration was developed in this study which can be used to simulate drilling operations with a PDM and a PDC bit. The method can also be used to determine an optimum set of operational parameters in terms of weight on bit and surface rotary speed to reach the highest average rate of penetration for a given formation or depth interval. A background is established for the method by literature review of PDMs and PDC bits; their design and geometrical definitions and models developed to predict their performance. The PDM model considers the design and geometry of the motor and links the differential pressure and mud flow rate across the motor to its output torque and RPM. The PDC bit model predicts bit performance while integrating the effect of bit wear. The PDC bit model estimates ROP and torque for a set of applied operational parameters. The model was developed using single cutter test data from Sandia National Laboratories and full scale laboratory drilling data from BP-Amoco research center. The model also predicts bit wear rates dependent on the applied operational parameters and formation properties and estimates cumulative bit wear as drilled depth increases. The simulation method applied to the integrated models is based on dicretizing drilling interval into meter by meter sub-intervals and estimating ROP in each sub-interval while considering the PDM output parameters. The method is verified by using the inverted ROP model to predict a confined rock strength log based on drilling data for a previously drilled well in Alberta. This meter by meter strength log is compared to a confined rock strength log generated by a commercially available drilling simulator package. Also, the PDM differential pressure log is generated and compared to field recorded on bottom motor differential pressure values supplied by Husky Energy. Two applications of this method are illustrated by examples. First, a case study is done in a drilling interval of a well in Alberta, by simulating the performance of three different PDMs, to show how improper PDM selection can affect drilling operation results. Secondly, optimization is done for three PDMs in that interval by means of the method to determine an optimum set of operational parameters, i.e. WOB and surface RPM, for maximum ROP and lowest cost.
Driven superconducting proximity effect in interacting quantum dots
Creators: name: Moghaddam, Ali G.
name: Governale, Michele
name: König, Jürgen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a theory of non-equilibrium superconducting proximity effect in an interacting quantum dot induced by a time-dependent tunnel coupling between dot and a superconducting lead. The proximity effect, that is established when the driving frequency fulfills a gate-voltage-dependent resonance condition, can be probed through the tunneling current into a weakly-coupled normal lead. Furthermore, we propose to generate and manipulate coherent superpositions of quantum-dot states with electron numbers differing by two, by applying pulsed oscillatory variations to the couplings between dot and superconductors.
description: 6 pages, 5 figures, paper substantially extended: new section, new figure, new references introduced
McShane's Identity in Rank One Symmetric Spaces
Creators: name: Kim, Inkang
name: Kim, Joonhyung
name: Tan, Ser Peow
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geometric Topology (math.GT)
subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 51M10, 57S25

description: In this paper we study McShane's identity in real and complex hyperbolic spaces and obtain various generalizations of the identity for representations of surface groups into the isometry groups of rank one symmetric spaces. Our methods unify most of the existing methods used in the existing literature for proving this class of identities.
description: 27 pages
การพัฒนาทรัพยากรมนุษย์ของบุคลากรในองค์กรปกครองส่วนท้องถิ่นในอำเภอหนองวัวซอ จังหวัดอุดรธานี
Creators: name: ดนัย ลามคำ
Publisher: name: Department of Strategics for Improving Education Quality, Surindra Rajabhat University
Year: 2023
Subjects: องค์กรปกครองส่วนท้องถิ่น
การพัฒนาทรัพยากรมนุษย์
จังหวัดอุดรธานี

description: วารสารราชภัฏสุรินทร์วิชาการ, 1, 2, 1-14
Hegemony over the heavens: the Chinese and American struggle in space
Creators: name: Modinger, John Hodgson
Publisher: name: University of Calgary
Year: 2008

description: Bibliography: p. 303-349
description: China's rise has generated awe and fear-awe over the pace of its economic transformation; fear about how that power will be exercised. The rise of a new great power always reshapes the structure of any international system, though turbulence and warfare is as much produced by the actions of declining states. Over the next generation, the world system will be shaped by the dynamics of interaction between Washington and Beijing. The actions of each state will affect the response of the other, and each will act according to the logic of its strategic culture. The transformation from a unipolar to multipolar world is underway. Americans are anxious about that. In an atmosphere of fear and frustration, voters are likely to reward pledges to stem the slide in American power, even though such actions may unnecessarily heighten global tensions and exacerbate the decline they were intended to halt. One controversial proposal seeks to perpetuate American dominance by preemptively moving to control space. Advocates argue it will preserve American security and end war as we know it, ushering in unmatched global stability and fostering the spread of democracy and liberal institutions. What these advocates frequently marginalize are the staggering costs-economic and political-associated with such a preemptive move. Calls for unilateral action before American primacy in space is seriously challenged assume the placement of weapons in space is inevitable. Ultimately, they may be proven correct; however, a movement in that direction in the near term will likely have several negative consequences which may include a space arms race. Ironically, the greatest threat to U.S. security may be American impulsiveness. Facing an unknown but complex future, the United States may fall prey to worst-case scenario thinking and compromise, rather than improve, global stability. When China demonstrated its anti-satellite capability in 2007, it was not a direct challenge to American space power. Instead, Beijing was challenging the stated American policy goal of wanting to dominate space by military means. How the United States chooses to respond to this latter, more specific, challenge remains to be seen.
Limits on deliberative democracy in Canada: a study of political culture and how attitudes towards the United States shape Canadian public policy debates
Creators: name: Milke, Mark
Publisher: name: University of Calgary
Year: 2008

description: Bibliography: p. 253-276
description: Theorists of deliberative democracy point to a number of factors that can affect the potential for deliberation: lack of wealth, marginalization of one sort or another, and insufficient interest in the public good. However, such theorists have ignored another possible influence on deliberation: political culture, itself a result of various factors including historical events, political leadership, and elite and popular discourse. That political culture, including a dominant narrative, will have an effect upon whether a polity is open to a wide-ranging deliberative discussion. If the discourse is self-limiting in some way, say for reasons of a religious taboo on a subject, then deliberation is circumscribed from the outset. In this thesis, I add to the literature on deliberative democracy in four ways: first, I show that the existing literature mistakenly posits private interest as opposite to public interest when the latter is instead a continuum of the former; second, I note how discourse in Canada is rife with references to the United States ( often negative) and how that prevents more thorough deliberation of an issue or policy; third, the narratives of Ontario and Alberta are examined and explored for the possibility that the dominant Canadian narrative (Ontario's survivalist-garrison narrative) was triumphant in the past due to historical events, the subsequent reality of a significant population base and the attendant advantages that brought vis-a-vis the rest of Canada, and political considerations; fourth, I note the prevalence of anti-American discourse in Canada both in history and in the present but conclude that while chronic references to the United States will likely always be part of Canadian discourse, a weakening of the dominant Ontario narrative may produce two results: less consequential anti-American policy (in contrast to past actions), and a more deliberative national discourse as ideas and policies are considered on their merits.
การศึกษาความสามารถในการแก้ปัญหาทางคณิตศาสตร์ โดยใช้เทคนิค KWDL สำหรับนักเรียนชั้นมัธยมศึกษาปีที่ 2 เรื่อง ทฤษฎีบทพีทาโกรัส
Creators: name: วรินทร์ญา โพธิ์ทอง
Publisher: name: Department of Strategics for Improving Education Quality, Surindra Rajabhat University
Year: 2023
Subjects: เทคนิค KWDL
ความสามารถในการแก้ปัญหาทางคณิตศาสตร์
ทฤษฎีบทพีทาโกรัส

description: วารสารราชภัฏสุรินทร์วิชาการ, 1, 2, 15-26
Evaluation of toxicity of halloysite nanotubes and multi-walled carbon nanotubes to endothelial cells in vitro and blood vessels in vivo
Creators: name: Wu, Bihan
name: Jiang, Mengdie
name: Liu, Xuewu
name: Huang, Chaobo
name: Gu, Zhipeng
name: Cao, Yi
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Nanomaterials (NMs) with tubular structures, such as halloysite nanotubes (HNTs), have potential applications in biomedicine. Although the biocompatibility of HNTs has been investigated before, the toxicity of HNTs to blood vessels is rarely systemically evaluated. Herein, we compared the toxicity of HNTs and multi-walled carbon nanotubes (MWCNTs) to human umbilical vein endothelial cells (HUVECs) in vitro and blood vessels of mice in vivo. HUVECs internalized HNTs and MWCNTs, but the uptake of HNTs was not obviously changed by clathrin inhibitor. Exposure to NMs decreased cellular viability, activated apoptotic proteins and up-regulated adhesion molecules, including soluble vascular cell adhesion molecule 1 (sVCAM-1) and VCAM-1. As the mechanisms, NMs decreased NO levels, eNOS mRNA and eNOS/p-eNOS proteins. Meanwhile, NMs promoted intracellular ROS and autophagy dysfunction, shown as decreased protein levels of LC3, beclin-1 and ATG5. The eNOS regulator Kruppel-like factor 4 (KLF4) was inhibited, but another eNOS regulator KLF4 was surprisingly up-regulated. Under in vivo conditions, ICR mice intravenously injected with NMs (50 μg/mouse, once a day for 5 days) showed an increased percentage of neutrophils, monocytes and basophils. Meanwhile, autophagy dysfunction, eNOS uncoupling, activation of apoptotic proteins and alteration of KLF proteins were also observed in mouse aortas. All of the toxic effects were more pronounced for MWCNTs in comparison with HNTs based on the same mass concentrations. Our results may provide novel insights about the toxicity of NMs with tubular structures to blood vessels. Considering the toxicological data reported here, HNTs are probably safer nanocarriers compared with MWCNTs.
Disclosure of an Autism Spectrum Disorder (ASD) Diagnosis: Parent Reported Impacts of Disclosure to Siblings
Creators: name: Gray, Shawna M.
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Autism Spectrum Disorder (ASD)
subject: siblings
subject: disclosure
subject: impacts
subject: Educational Psychology

description: Autism Spectrum Disorder (ASD) is a neurodevelopmental spectrum disorder of social communication and behaviour. ASD presents many different challenges to families in which an ASD diagnosis is present. As there is a growing prevalence rate of ASD, it is important to explore the impact that ASD can have on the family system. Researchers have focused on the disclosure of an ASD diagnosis to parents or individuals with ASD, but there is a lack of investigation of the impact of disclosure to siblings without ASD. To explore this gap in the literature, 22 parents of a child with ASD and another child without ASD were purposively sampled to complete a semi-structured interview about their perceived impacts of their telling their child(ren) without ASD about the affected child’s diagnosis. Data were analyzed via Thematic Analysis and five themes were derived: (1) Incorporation into support networks; (2) Making sense of difficult situations; (3) Embracing the sibling with ASD as they are; (4) Comprehension of observed differences; and (5) Endorse inquiry towards a greater understanding. Themes were fit into a temporal framework (long- or short-term impacts). The results provide a starting point for understanding how ASD diagnostic disclosure impacts unaffected siblings.
Synaptic regulation of intrinsic dynamics in ell pyramidal cells
Creators: name: Mehaffey, William Hamish
Publisher: name: University of Calgary
Year: 2008

description: Bibliography: p. 228-239
description: Some pages are in colour.
description: A near ubiquitous feature of neuronal architecture is an extensive dendritic tree, an anatomical specialization that allows large numbers of synaptic inputs from presynaptic cells to influence the firing of a postsynaptic neuron. However, the dendrite is also able to directly influence somatic firing dynamics. Because of the electrotonic coupling between somatic and dendritic compartments, somatic events can charge dendritic membrane or trigger active dendritic spikes, promoting current flow which reflects back to the soma. This thesis is focused on dendrosomatic feedback, its regulation by inhibition, and the resulting effects on sensory processing in pyramidal cells of the electrosensory lobe (ELL) of the weakly electric fish Apteronotus leptorhynchus. I show that feedback arising from dendritic spike backpropagation has a multiplicative effect on the response gain of pyramidal cells. Morever, gain can be regulated in a divisive manner by dendritic inhibition from GABAA receptor activation which decreases the amplitude of the dendritic spike. In contrast, GAB An receptor activation alters the timing of the dendritic feedback to cause a qualitative change in firing dynamics and a paradoxical increase in burst output. Thus, distinct subtypes of synaptic inhibition can have different nonlinear effects on the firing of the cell. I further model a direct feedback pathway known to recruit GABA8 inhibition of pyramidal cells, whereas regulation of burst dynamics modulates frequency tuning and spike patterning, even when embedded in a dynamic network. FinaJly, I examine the intrinsic properties of pyramidal cell spike and burst discharge in relation to frequency tuning across three sensory maps of the ELL with known behavioural contribution . These interactions are important in determining how this animal and central neural circuit encodes electric signals that are used to detect prey, examine its environment, and for social interactions. Since these interactions are often distinguishable by their frequency content, frequency tuning is of distinct ethological relevance in this system. I show that spike bursts that arise through dendritic feedback are correlated with low frequency tuning across the maps, and thus may contribute to specialized detection of prey-like events.
Determination of Mode I Fracture Toughness, Tensile Strength and Adhesion of Compacted Clays
Creators: name: Cao, Keda
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Mode I Fracture Toughness
subject: Tensile Strength
subject: Adhesion
subject: Compacted Clay
subject: Engineering--Civil
subject: Geotechnology

description: Tensile strength and fracture toughness are two parameters used to define the ability of resisting fracture under tensile stresses. Adhesion of clays to metals is the strength of soil-metal interface. These properties of cohesive soils are fundamental and essential for geotechnical problems. Two types of compacted clays were used in this research — Calgary till and Regina clay. The fracture toughness KIc and tensile strength σt of two clays were measured by straight notched disk bending (SNDB) method and uniaxial direct tensile test, respectively. Results showed that the variations of σt with respect to moisture content and dry density were very similar with that of KIc. A strong positive correlation between these two properties was found. The tensile strength of compacted clays was curve fitted based on a double-porosity concept which considers the water among micropores and macropores in clay structure and their contribution to the strength of soils. The adhesion of compacted clays to stainless steel was measured using a modified direct shear box test. To obtain the adhesion factors, the adhesion was correlated with unconfined compressive strength of compacted clays. The effects of moisture content and pre-consolidation pressure on adhesion were investigated.
MPEC 2023-W150 : 2013 HQ166
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2013 HQ166

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Improved Controller Synthesis from Esterel
Creators: name: Soviani, Cristian
name: Zeng, Jia
name: Edwards, Stephen A.
Publisher: name: Columbia University
Year: 2004
Subjects: Computer science

description: We present a new procedure for automatically synthesizing controllers from high-level Esterel specifications. Unlike existing \textsc{rtl} synthesis approaches, this approach frees the designer from tedious bit-level state encoding and certain types of inter-machine communication. Experimental results suggest that even with a fairly primitive state assignment heuristic, our compiler consistently produces smaller, slightly faster circuits that the existing Esterel compiler. We mainly attribute this to a different style of distributing state bits throughout the circuit. Initial results are encouraging, but some hand-optimized encodings suggest room for a better state assignment algorithm. We are confident that such improvements will make our technique even more practical.
Object Recognition Using Vision and Touch
Creators: name: Allen, Peter K.
Publisher: name: Columbia University
Year: 1985
Subjects: Computer science

description: A robotic system for object recognition is described that uses both active exploratory tactile sensing and passive stereo vision. The complementary nature of these sensing modalities allows the system to discover the underlying three dimensional structure of the objects to be recognized. This structure is embodied in rich, hierarchical, viewpoint independent 3-D models of the objects which include curved surfaces, concavities and holes. The vision processing provides sparse 3-D data about regions of interest that are then actively explored by the tactile sensor which is mounted on the end of a six degree of freedom manipulator. A robust hierarchical procedure has been developed to integrate the visual and tactile data into accurate three dimensional surface and feature primitives. This integration of vision and touch provides geometric measures of the surfaces and features that are used in a matching phase to find model objects that are consistent with the sensory data. Methods for verification of the hypothesis are presented, including the sensing of visually occluded areas with the tactile sensor. A number of experiments have been performed using real sensors and real, noisy data to demonstrate the utility of these methods and the ability of such a system to recognize objects that would be difficult for a system using vision alone.
GREMLIN CONUS1 Manually Selected Storms Dataset
Creators: name: Hilburn, Kyle
Publisher: name: Zenodo
Year: 2023
Subjects: subject: Earth and related environmental sciences
subject: FOS: Earth and related environmental sciences
subject: artificial intelligence
subject: convolutional neural network
subject: geostationary
subject: imagers
subject: Lightning
subject: machine learning
subject: radar
subject: Remote Sensing
subject: satellite

description: The CONUS1 dataset is a "toy" dataset that is small enough to be able to train a convolutional neural network on a laptop computer to do image translation from geostationary satellite images to ground-based radar images. It provides three input channels from GOES-16 ABI, one input channel from GOES-16 GLM, and one output channel from MRMS.
description: You may read the dataset using any software that can read NetCDF-4.Funding provided by: NOAA GOES-R*
Crossref Funder Registry ID:
Award Number: NA19OAR4320073
description: The methodology is described in detail by Hilburn et al. (2021). The ABI, GLM, and MRMS data sets were resampled to a common 3 km grid. A cloud height of 10 km was used for removing parallax displacements. Satellite and radar samples were matched in time with a maximum time difference of 2.5 minutes. GLM lightning groups were accumulated over 15-minute time periods.
Design rules for the self-assembly of a protein crystal
Creators: name: Haxton, Thomas K.
name: Whitelam, Stephen
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Theories of protein crystallization based on spheres that form close-packed crystals predict optimal assembly within a `slot' of second virial coefficients and enhanced assembly near the metastable liquid-vapor critical point. However, most protein crystals are open structures stabilized by anisotropic interactions. Here, we use theory and simulation to show that assembly of one such structure is not predicted by the second virial coefficient or enhanced by the critical point. Instead, good assembly requires that the thermodynamic driving force be on the order of the thermal energy and that interactions be made as nonspecific as possible without promoting liquid-vapor phase separation.
description: 5 pages, 4 figures
Variation in the Timing of Nutritional Weaned Age in Colobus vellerosus
Creators: name: Rissling, Tianna C.
Publisher: name: Arts
Year: 2018
Subjects: subject: Weaning
subject: Anthropology
subject: FOS: Sociology
subject: Anthropology--Physical

description: The transition between infancy and juvenility occurs once nutritional independence is achieved. Weaning, weaned age, and weaned event are all landmarks during this transition but are ill defined. In this thesis, I reviewed the literature on the transition from infancy to juvenility. I then examined the factors that influenced this transition from nutritional dependence to independence, and survivorship in a wild, folivorous primate. I compiled behavioural records from 83 infants from a population of Colobus vellerosus. Infants were weaned earlier when they lived in a good quality home range. Most weaned events occurred during or prior to peaks in easy to process foods. New juveniles were also more likely to survive when their weaned event coincided with high food availability. These findings suggest that food availability is the most influential factor determining when during the year, and at what age, infants transition to juveniles.
An Algorithmic Taxonomy of Production System Machines
Creators: name: Mills, Russell C.
Publisher: name: Columbia University
Year: 1988
Subjects: Computer science

description: This paper presents a survey of computer architectures designed to execute production systems. After a brief description of production systems and production system languages, the paper summarizes match algorithms, particularly the Rete algorithm, and outlines suggested parallelizations. Most parallel production system algorithms have as their unit of sequential computation a single production's left-hand side, activations of a single Rete node, a single activation of a Rete node, or a single comparison in a Rete node. The paper discusses a number of proposed production system machine architectures in terms of the parallel and sequential computations performed in the algorithms suggested for each machine. A taxonomy of parallel production system algorithms, describing in detail the distribution and replication of data and computations, concludes the paper.
Colorado water, June 2003
Creators: name: Flanagan, Marian
name: Jacobson, Alex
name: Miller, Shirley
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 2003
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 Water Center at Colorado State University.
Sequential delivery of dual drugs with nanostructured lipid carriers for improving synergistic tumor treatment effect
Creators: name: Xu, Man
name: Li, Guangmeng
name: Zhang, Haoxiang
name: Chen, Xiaoming
name: Li, Yi
name: Yao, Qianming
name: Xie, Maobin
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: To improve synergistic anticancer efficacy and minimize the adverse effects of chemotherapeutic drugs, temozolomide (TMZ) and curcumin (CUR) co-loaded nanostructured lipid carriers (NLCs) were prepared by microemulsion in this study. And the physicochemical properties, drug release behavior, intracellular uptake efficiency, in vitro and in vivo anticancer effects of TMZ/CUR-NLCs were evaluated. TMZ/CUR-NLCs showed enhanced inhibitory effects on glioma cells compared to single drug loaded NLCs, which may be owing to that the quickly released CUR can sensitize the cancer cells to TMZ. The inhibitory mechanism is a combination of S phase cell cycle arrest associated with induced apoptosis. Notably, TMZ/CUR-NLCs can accumulate at brain and tumor sites effectively and perform a significant synergistic anticancer effect in vivo. More importantly, the toxic effects of TMZ/CUR-NLCs on major organs and normal cells at the same therapeutic dosage were not observed. In conclusion, NLCs are promising nanocarriers for delivering dual chemotherapeutic drugs sequentially, showing potentials in the synergistic treatment of tumors while reducing adverse effects both in vitro and in vivo.
Towards Designing a Biometric Measure for Enhancing ATM Security in Nigeria E-Banking System
Creators: name: Ibidapo
name: Akinyemi, O.
name: Omogbadegun, Zaccheous O.
name: Oyelami, Olufemi M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences
subject: K.4.4

description: Security measures at banks can play a critical, contributory role in preventing attacks on customers. These measures are of paramount importance when considering vulnerabilities and causation in civil litigation. Banks must meet certain standards in order to ensure a safe and secure banking environment for their customers. This paper focuses on vulnerabilities and the increasing wave of criminal activities occurring at Automated Teller Machines (ATMs) where quick cash is the prime target for criminals rather than at banks themselves. A biometric measure as a means of enhancing the security has emerged from the discourse. Keywords-Security, ATM, Biometric, Crime.
description: 6 pages, 7 figures, and 7 references; http://www.ijens.org/109106-3535%20IJECS-IJENS.pdf, http://www.ijens.org/IJECS%20Vol%2010%20Issue%2006.html
On the Structure of Solutions of Computable Real Functions
Creators: name: Hartmanis, Juris
name: Hemachandra, Lane A.
Publisher: name: Columbia University
Year: 1988
Subjects: Computer science

description: The relationship between the structure of a domain and the complexity of computing over that domain is a fundamental question of computer science. This paper studies how the structure of the real numbers constrains the behavior of computable real functions. In particular, we uncover a close correlation between the structure of the zero set of a computable real function, and the complexity of the zeros. We show that computable real functions with hard solutions perforce have many solutions. Furthermore, as the complexity of solutions increases, the number of solutions increases. We prove that computable real functions with nonrecursive, nonarithmetical, or random zeros have solution sets that are, respectively, infinite,“˜ uncountable, or of positive measure. In addition, we show that the computational complexity of the zero set of a computable real function is limited by its topological complexity. These results suggest an emerging paradigm-the inability of machines to name complex strings can serve as the basis of powerful proof techniques in computational complexity theory.
Observation of a new Xi(b) baryon
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The first observation of a new b baryon via its strong decay into Xi(b)^- pi^+ (plus charge conjugates) is reported. The measurement uses a data sample of pp collisions at sqrt(s) = 7 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3 inverse femtobarns. The known Xi(b)^- baryon is reconstructed via the decay chain Xi(b)^- to J/psi Xi^- to mu^+ mu^- Lambda^0 pi^-, with Lambda^0 to p pi^-. A peak is observed in the distribution of the difference between the mass of the Xi(b)^- pi^+ system and the sum of the masses of the Xi(b)^- and pi^+, with a significance exceeding five standard deviations. The mass difference of the peak is 14.84 +/- 0.74 (stat.) +/- 0.28 (syst.) MeV. The new state most likely corresponds to the J^P=3/2^+ companion of the Xi(b).
description: Submitted to Physical Review Letters
Double electromagnetically induced transparency
Creators: name: MacRae, Andrew John
Publisher: name: University of Calgary
Year: 2008

description: Bibliography: p. 62-65
description: Some pages are in colour.
description: Electromagnetically Induced Transparency (EIT) has become an invaluable resource for numerous applications in quantum information theory, fundamental physics, nonlinear optics and precision metrology. This thesis is concerned with an extension to EIT: double- EIT, in which two separate optical fields experience EIT due to a coherence between a common ground state. Double EIT has appeared as the basis for a number of theoretical proposals but has yet to be demonstrated and analyzed experimentally. In this thesis, a double-EIT system is experimentally implemented and analyzed, using a hot vapor of rubidium-87 atoms. The interplay between the two signal fields is studied and properties are found to emerge which may prove useful for application. An application of double EIT which in principle allows large nonlinear interactions between light pulses as low as several photons per atomic cross section is discussed. Progress towards a physical demonstration of this effect is reported and prospects for further work in this direction are then described.
Frequently Asked Questions about Natural Language Processing - Second Edition
Creators: name: Radev, Dragomir R.
Publisher: name: Columbia University
Year: 1999
Subjects: Computer science

description: This is an attempt to put together a list of frequently (and not so frequently) asked questions about Natural Language Processing and their answers. This document is in no way perfect or complete or 100% accurate. In no way should the maintainer be responsible for damage resulting directly or indirectly from using information in this FAQ. The FAQ originated from Mark Kantrowitz's FAQ on AI. Some questions in the present document come directly from Mark's original FAQ (available at http://www.faqs.org). This FAQ is maintained by Dragomir R. Radev from Columbia University.Please send me all your comments, suggestions, corrections, additions,and such to my e-mail address: radev@cs.columbia.edu