cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A characterization of the Razak-Jacelon algebra
Creators: name: Nawata, Norio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: Primary 46L35, Secondary 46L40, 46L80

description: Combining Elliott, Gong, Lin and Niu's result and Castillejos and Evington's result, we see that if $A$ is a simple separable nuclear monotracial C$^*$-algebra, then $A\otimes\mathcal{W}$ is isomorphic to $\mathcal{W}$ where $\mathcal{W}$ is the Razak-Jacelon algebra. In this paper, we give another proof of this. In particular, we show that if $\mathcal{D}$ is a simple separable nuclear monotracial $M_{2^{\infty}}$-stable C$^*$-algebra which is $KK$-equivalent to $\{0\}$, then $\mathcal{D}$ is isomorphic to $\mathcal{W}$ without considering tracial approximations of C$^*$-algebras with finite nuclear dimension. Our proof is based on Matui and Sato's technique, Schafhauser's idea in his proof of the Tikuisis-White-Winter theorem and properties of Kirchberg's central sequence C$^*$-algebra $F(\mathcal{D})$ of $\mathcal{D}$. Note that some results for $F(\mathcal{D})$ are based on Elliott-Gong-Lin-Niu's stable uniqueness theorem. Also, we characterize $\mathcal{W}$ by using properties of $F(\mathcal{W})$. Indeed, we show that a simple separable nuclear monotracial C$^*$-algebra $D$ is isomorphic to $\mathcal{W}$ if and only if $D$ satisfies the following properties: (i) for any $θ\in [0,1]$, there exists a projection $p$ in $F(D)$ such that $τ_{D, ω}(p)=θ$, (ii) if $p$ and $q$ are projections in $F(D)$ such that $0<τ_{D, ω}(p)=τ_{D, ω}(q)$, then $p$ is Murray-von Neumann equivalent to $q$, (iii) there exists an injective homomorphism from $D$ to $\mathcal{W}$.
description: 23 pages, added references, fixed typos(v2), fixed typos(v3) to appear in Analysis and PDE
Tax Policy Issues Relevant to Captive Insurance Companies in Alberta
Creators: name: Dolson, Mike
Publisher: name: The School of Public Policy Publications
Year: 2022

description: Alberta recently enacted legislation that will permit the creation of captive insurance companies. This legislation will not come into force until Proclamation, which is unlikely to occur before detailed regulations are promulgated to address capital requirements, financial reporting standards, the lines of insurance business that captives may undertake, or the persons who may be insured. These critical regulatory items are the subject of a separate research paper on the captive insurance market published by the School of Public Policy.
description: The School of Public Policy Publications, Vol. 15 No. 1 (2022)
Stationary solution for quasi-homogeneous small-scale magnetic field advected by non-Gaussian turbulent flow
Creators: name: Il'yn, A. S.
name: Kopyev, A. V.
name: Sirota, V. A.
name: Zybin, K. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We consider fluctuations of magnetic field excited by external force and advected by isotropic turbulent flow. It appears that non-Gaussian velocity gradient statistics and finite region of pumping force provide the existence of stationary solution. The mean-square magnetic field is calculated for arbitrary velocity gradient statistics. An estimate for possible feedback of magnetic field on velocity shows that, for wide range of parameters, stationarity without feedback would take place even in the case of intensive pumping of magnetic field.
description: 7 pages, 2 figures
LINKS: Learning-based multi-source IntegratioN frameworK for Segmentation of infant brain images
Creators: name: Shen, Dinggang
name: Wang, Li
name: Gao, Yaozong
name: Li, Gang
name: Lin, Weili
name: Shi, Feng
name: Gilmore, John H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Segmentation of infant brain MR images is challenging due to insufficient image quality, severe partial volume effect, and ongoing maturation and myelination processes. In the first year of life, the image contrast between white and gray matters of the infant brain undergoes dramatic changes. In particular, the image contrast is inverted around 6-8 months of age, and the white and gray matter tissues are isointense in both T1- and T2-weighted MR images and thus exhibit the extremely low tissue contrast, which poses significant challenges for automated segmentation. Most previous studies used multi-atlas label fusion strategy, which has the limitation of equally treating the different available image modalities and is often computationally expensive. To cope with these limitations, in this paper, we propose a novel learning-based multi-source integration framework for segmentation of infant brain images. Specifically, we employ the random forest technique to effectively integrate features from multi-source images together for tissue segmentation. Here, the multi-source images include initially only the multi-modality (T1, T2 and FA) images and later also the iteratively estimated and refined tissue probability maps of gray matter, white matter, and cerebrospinal fluid. Experimental results on 119 infants show that the proposed method achieves better performance than other state-of-the-art automated segmentation methods. Further validation was performed on the MICCAI grand challenge and the proposed method was ranked top among all competing methods. Moreover, to alleviate the possible anatomical errors, our method can also be combined with an anatomically-constrained multi-atlas labeling approach for further improving the segmentation accuracy.
Moldova, and why it matters
Creators: name: Stöxen, Jana
Publisher: name: Eurac Research
Year: 2023

description: „[T]he problems of Moldovan history are the problems of Eastern European history writ small”, states [Rebecca Haynes](https://www.bloomsbury.com/us/moldova-9781788318129/). What is meant by this, and which factors or developments speak for this argument, are the subject of this post.
MR-based attenuation correction for PET/MRI neurological studies with continuous-valued attenuation coefficients for bone through a conversion from R2* to CT-Hounsfield units
Creators: name: Juttukonda, Meher R.
name: Benzinger, Tammie L.S.
name: Mersereau, Bryant G.
name: Su, Yi
name: Chen, Yasheng
name: Rubin, Brian G.
name: An, Hongyu
name: Lalush, David S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: AIM: MR-based correction for photon attenuation in PET/MRI remains challenging, particularly for neurological applications requiring quantitation of data. Existing methods are either not sufficiently accurate or are limited by the computation time required. The goal of this study was to develop an MR-based attenuation correction method that accurately separates bone tissue from air and provides continuous-valued attenuation coefficients for bone.

MATERIALS AND METHODS: PET/MRI and CT datasets were obtained from 98 subjects (mean age [±SD]: 66yrs [±9.8], 57 females) using an IRB-approved protocol and with informed consent. Subjects were injected with 352±29MBq of (18)F-Florbetapir tracer, and PET acquisitions were begun either immediately or 50min after injection. CT images of the head were acquired separately using a PET/CT system. Dual echo ultrashort echo-time (UTE) images and two-point Dixon images were acquired. Regions of air were segmented via a threshold of the voxel-wise multiplicative inverse of the UTE echo 1 image. Regions of bone were segmented via a threshold of the R2* image computed from the UTE echo 1 and UTE echo 2 images. Regions of fat and soft tissue were segmented using fat and water images decomposed from the Dixon images. Air, fat, and soft tissue were assigned linear attenuation coefficients (LACs) of 0, 0.092, and 0.1cm(-1), respectively. LACs for bone were derived from a regression analysis between corresponding R2* and CT values. PET images were reconstructed using the gold standard CT method and the proposed CAR-RiDR method.

RESULTS: The RiDR segmentation method produces mean Dice coefficient±SD across subjects of 0.75±0.05 for bone and 0.60±0.08 for air. The CAR model for bone LACs greatly improves accuracy in estimating CT values (28.2%±3.0 mean error) compared to the use of a constant CT value (46.9%±5.8, p<10(-6)). Finally, the CAR-RiDR method provides a low whole-brain mean absolute percent-error (MAPE±SD) in PET reconstructions across subjects of 2.55%±0.86. Regional PET errors were also low and ranged from 0.88% to 3.79% in 24 brain ROIs.

CONCLUSION: We propose an MR-based attenuation correction method (CAR-RiDR) for quantitative PET neurological imaging. The proposed method employs UTE and Dixon images and consists of two novel components: 1) accurate segmentation of air and bone using the inverse of the UTE1 image and the R2* image, respectively and 2) estimation of continuous LAC values for bone using a regression between R2* and CT-Hounsfield units. From our analysis, we conclude that the proposed method closely approaches (<3% error) the gold standard CT-scaled method in PET reconstruction accuracy.
Tests of Lorentz symmetry in single beta decay
Creators: name: Diaz, Jorge S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Low-energy experiments studying single beta decay can serve as sensitive probes of Lorentz invariance that can complement interferometric searches for deviations from this spacetime symmetry. Experimental signatures of a dimension-three operator for Lorentz violation that are unobservable in neutrino oscillations are described for the decay the polarized and unpolarized neutrons as well as for measurements of the spectral endpoint in beta decay.
description: 7 pages
Memorandum from Scott Shepherd to 12 MSG/CEP, Internal Renovation Building 901, Randolph Air Force Base, Texas
Creators: name: Shepherd, Scott B.
Publisher: name: Department of the Air Force, Air Education and Training Command
Year: 2009
Subjects: subject: Randolph Field Historic Landmark District
valueUri: https://core.tdar.org/browse/geographic-keyword/83364/randolph-field-historic-landmark-district
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Randolph Air Force Base
valueUri: https://core.tdar.org/browse/geographic-keyword/78971/randolph-air-force-base
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: NRHP
valueUri: https://core.tdar.org/browse/other-keyword/9857/nrhp
subject: Building 901
valueUri: https://core.tdar.org/browse/other-keyword/146466/building-901
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: Randolph Air Force Base conducted an evaluation on Building 901 and determined that the property is listed on the National Register of Historic Places. After review of the scope of work and past, related discussions it was determined that the action will have No Adverse Effect on the historic property or its landmark district.
Student Generational Trends and Contrary Post-Secondary Policies: A Case Study of a Large Canadian University
Creators: Dahl, Jenna E.
Publisher: name: University of Alberta Library
Year: 2022

The demographic of students accessing post-secondary education has changed significantly over time. As continues to be true over time, the average undergraduate student today is born of a different generation than those before it and therefore likely motivated by different things than those undergraduate students of the past. Parallel to this fact, post-secondary processes and funding models have also shifted over time. Though there has been a timeline of significant changes, policies have not focused specifically on the shifting needs in student motivators, but rather the shift in financial funding models.  This study hopes to provide insights into how traditional brick and mortar post-secondary institutions can practice policy in ways that will allow them to continue to attract students from the most prominent (87%) age group of students enrolled in postsecondary institutions in Canada; which according to Statista would be 29 years (Jeudy, 2022). This data was collected for the 2019/2020 academic year, meaning that students were born in 1990 and later. Due to the fact that these students represent the majority, millennial and generation Z students were the main focus of this study, with the understanding that they do not represent all students of today. Within this research I ask the question: how have universities in Canada adapted their policies and policy practices to effectively address the student motivator trends of millennial and generation z students? This case study uses a thematic analysis of data collected through semi-structured interviews and was employed to explore policy in practice at a large Canadian post-secondary institution in the Summer of 2021. The results identify significant areas of opportunity to integrate a restorative approach into policy creation and practice to better meet the motivator trends of students today. The key consideration is that student motivator trends emphasize a need for community inclusion. They care deeply about being involved in their education, as well as the campus environment. A restorative approach to policy creation and practice would seamlessly integrate a community-based approach to post-secondary development and culture shifts.
Stellungnahme zum Offenen Brief des Herrn Direktors; 1968
Creators: name: Gutzke, Peter
name: Schmidt, Jürgen
name: Heyck, Birgit
name: Lopez, Jose
name: Gärtner, Brigitte
Publisher: name: Universitätsbibliothek der Technischen Universität Berlin
Year: 2018

description: Enthält u. a.: Stellungnahme des Allgemeinen Studentenausschuss (AStA) der Staatlichen Akademie Werkkunst und Mode (AWM) zum offenen Brief des Direktor von Möllendorf zum Polizeieinsatz gegen 4 Mitglieder der Iranischen Studentenvereinigung während einer Unterschriftensammlung.- Gegendarstellung der Informationen zu den Abläufen.
Inverse problems for nonlinear magnetic Schrödinger equations on conformally transversally anisotropic manifolds
Creators: name: Krupchyk, Katya
name: Uhlmann, Gunther
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35R30, 35J61

description: We study the inverse boundary problem for a nonlinear magnetic Schrödinger operator on a conformally transversally anisotropic Riemannian manifold of dimension $n\ge 3$. Under suitable assumptions on the nonlinearity, we show that the knowledge of the Dirichlet-to-Neumann map on the boundary of the manifold determines the nonlinear magnetic and electric potentials uniquely. No assumptions on the transversal manifold are made in this result, whereas the corresponding inverse boundary problem for the linear magnetic Schrödinger operator is still open in this generality.
Studies on C–F Activation and Radiofluorination Reactions: Interactions of Fluorine with Boron and Silicon Lewis Acids
Creators: Dorian, Andreas
Publisher: name: University of Alberta Library
Year: 2022

Boron and silicon Lewis acids form strong bonds with fluorine. This ability facilitates a range of interesting reactivity. For example, small boron/silicon reagents are at the forefront of C-F activation, a field focused on cleaving one or more C-F bonds in organofluorine compounds. In addition to degradation of fluorine waste products, this field offers a compelling strategy to synthesize highly sought-after fluorinated motifs. Alternatively, boron/silicon functionalities can be introduced to a bioactive small-molecules or peptides of interest. These can facilitate inclusion of the radioisotope fluorine-18, a positron emitter that enables PET imaging - an important medical tool used in the diagnosis and monitoring of several diseases.

The introductory chapter of this thesis provides a broad overview of C-F activation with boron/silicon Lewis acids. Special focus is given to reactions with trifluoromethyl arenes (ArCF₃), especially those that achieve selective single activation, resulting in the formation of valuable difluoromethyl (ArCF₂R) chemotypes. The second chapter describes a new method for ArCF₃ halogen- exchange, using readily available BX₃ and FeX₃ reagents. The reaction was optimized to form ArCX₃ and ArCF₂X products, and was evaluated with a variety of substrates.

The third chapter begins with a general overview of PET imaging and the synthesis of 18F-labeled compounds, with a special emphasis on [18F] ArCF₃ formation. The direct and efficient synthesis of [18F] ArCF₃ from the corresponding non-radioactive ArCF₃ precursor remains an outstanding goal in radiochemistry. The efforts made towards the development of such a synthetic method are discussed, wherein BX₃/FeX₃ reagents were used to mediate the desired reactivity. The fourth chapter provides an overview of a radiofluorination approach termed non-canonical labeling. Some of the clinical applications of this strategy are discussed, in particular radiotracers targeting PSMA, a significant biomarker used for imaging prostate cancer. The efforts made towards the synthesis of a novel PSMA radiotracer are also described.
Folding-model approach to reaction cross section of $^{4,6,8}$He+$^{12}$C scattering at 790 MeV
Creators: name: Tagami, Shingo
name: Wakasa, Tomotsugu
name: Takechi, Maya
name: Matsui, Jun
name: Yahiro, Masanobu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Tanihata {\it et al.} determined matter radii $r_{m}(σ_{\rm I})$ for $^{4,6,8}$He from interaction cross sections $σ_{\rm I}$ of $^{4,6,8}$He+$^{12}$C scattering at 790 MeV per nucleon, using the optical limit of the Glauber model. Lu {\it et al.} determined proton radii $r_{p}({\rm AIS})$ for $^{4,6,8}$He with the atomic isotope shifts (AIS). We investigate whether the Love-Franey $t$-matrix folding model is good for $^{4,6,8}$He+$^{12}$C scattering at 790 MeV per nucleon.
Developments in laser-driven plasma accelerators
Creators: name: Hooker, Simon Martin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Laser-driven plasma accelerators provide acceleration gradients three orders of magnitude greater than conventional machines, offering the potential to shrink the length of accelerators by the same factor. To date, laser-acceleration of electron beams to particle energies comparable to those offered by synchrotron light sources has been demonstrated with plasma acceleration stages only a few centimetres long. This article describes the principles of operation of laser-driven plasma accelerators, and reviews their development from their proposal in 1979 to recent demonstrations. The potential applications of plasma accelerators are described and the challenges which must be overcome before they can become a practical tool are discussed.
Kommilitonen! Das Studentenparlament hat am 9. 5.; 1968
Creators: name: Koch, Hans Rudolf
name: Rogge, Dirk
name: Ruschke, Hans
name: von Sichartshofen, Fedor
name: Krause, Jens
Publisher: name: Universitätsbibliothek der Technischen Universität Berlin
Year: 2018
Subjects: Veranstaltungen zur 2. Lesung der Notstandsgesetze im Bundestag
Notstandsgesetze

description: Enthält u. a.: Aufruf der Unabhängigen Aktionsgemeinschaft an der TU Berlin (UAG) zur Teilnahme an den Veranstaltungen zur 2. Lesung der Notstandsgesetze im Bundestag am 15. Mai 1968 im Audimax.- Beschluss des Studentenparlaments vom 9. Mai 1968.- Fernbleiben von den Lehrveranstaltungen am 15. Mai 1968 .- Begründung der Zustimmung der UAG zum Beschluss des StuPa.- Ablehnung von Streikposten.- Notstandsgesetze. 1 Seite. S/w.
Regional differences in fiber tractography predict neurodevelopmental outcomes in neonates with infantile Krabbe disease
Creators: name: Gupta, A.
name: Escolar, M.L.
name: Styner, M.A.
name: Panigrahy, A.
name: Poe, M.D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: BackgroundKrabbe disease is a fatal neurodegenerative disease caused by rapid demyelination of the central and peripheral nervous systems. The only available treatment, unrelated umbilical cord blood transplantation, is effective only if performed before clinical symptoms appear. Phenotypic expressions of disease-causing mutations vary widely, but genotype–phenotype relationships are unclear. Therefore, we evaluated diffusion tensor imaging (DTI) tractography with volumetric analysis as a biomarker of early white matter changes and functional disability in presymptomatic infants.MethodsWe obtained DTI and structural scans of newborns with early-infantile Krabbe disease (n=9) diagnosed by family history or newborn screening. We compared white matter fiber tract properties to those of normal controls (n=336) and assessed the ability of tract-based properties to predict longitudinal development in four functional domains (cognitive, fine motor, gross motor, adaptive behavior) after treatment with unrelated umbilical cord blood transplantation. We also assessed the relationship between the standard evaluation (modified Loes score) and DTI results, and the volumetric differences between the Krabbe subjects and normal controls.FindingsReductions in fractional anisotropy were significant in the corticospinal tract in the Krabbe patients compared to controls, which strongly correlated with motor and cognitive outcomes after transplantation. Significant regional differences were observed in the splenium and uncinate fasciculus in Krabbe patients and these differences correlated only with cognitive outcomes. Regional brain volumes of Krabbe patients were slightly larger than controls. Loes scores did not correlate with DTI results.InterpretationNeonatal microstructural abnormalities correlate with neurodevelopmental treatment outcomes in patients treated for infantile Krabbe disease. DTI with quantitative tractography is an excellent biomarker for evaluating infants with Krabbe disease identified through newborn screening.Highlights•Reductions in FA and increases in MD and RD in the 6 tracts assessed in Krabbe neonates strongly correlate with motor and cognitive outcomes after cord blood transplantation.•Significant regional differences in the splenium and uncinate fasciculus correlated only with cognitive outcomes.•Regional brain volumes of Krabbe patients were slightly larger than controls.•Loes scores did not correlate with DTI results.•DTI tractography can be a key component of Krabbe newborn screening.
Addition of Kitchen Unit to Buildings 21, 23, 26, 33, 34, and 36, Blueprint, Camp Bullis, Texas
Creators: name: Brin, Adam
Publisher: name: Engineering Branch, Construction Division
Year: 1935
Subjects: subject: Camp Bullis
valueUri: https://core.tdar.org/browse/geographic-keyword/82533/camp-bullis
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Building 34
valueUri: https://core.tdar.org/browse/other-keyword/153695/building-34
subject: Building 36
valueUri: https://core.tdar.org/browse/other-keyword/153696/building-36
subject: Building 23
valueUri: https://core.tdar.org/browse/other-keyword/146157/building-23
subject: Building 21
valueUri: https://core.tdar.org/browse/other-keyword/153693/building-21
subject: Building 26
valueUri: https://core.tdar.org/browse/other-keyword/153694/building-26
subject: Building 33
valueUri: https://core.tdar.org/browse/other-keyword/146164/building-33
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: This set of drawings from May 2, 1935 document the addition of a kitchen unit to buildings 21, 23, 26, 33, 34, and 36 at Camp Bullis, Texas. The blueprint also includes cross-sections and extensive notes. The sponsor for this blueprint is the Office of the Post Quartermaster at Fort Sam Houston, Texas under the supervision of Harold Spigelmyre. The blueprint was originally drawn by “C.E.E.” and traced by “C.E.E.” The data measurements used to draw the blueprint were taken by Lt. Liebel.
3-Dimensional Diffusion Tensor Imaging (DTI) Atlas of the Rat Brain
Creators: name: Johns, Josephine
name: Radcliffe, Marlana
name: Lauder, Jean
name: Makam, Pooja
name: Oguz, Ipek
name: McMurray, Matthew
name: Rumple, Ashley
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Anatomical atlases play an important role in the analysis of neuroimaging data in rodent neuroimaging studies. Having a high resolution, detailed atlas not only can expand understanding of rodent brain anatomy, but also enables automatic segmentation of new images, thus greatly increasing the efficiency of future analysis when applied to new data. These atlases can be used to analyze new scans of individual cases using a variety of automated segmentation methods. This project seeks to develop a set of detailed 3D anatomical atlases of the brain at postnatal day 5 (P5), 14 (P14), and adults (P72) in Sprague-Dawley rats. Our methods consisted of first creating a template image based on fixed scans of control rats, then manually segmenting various individual brain regions on the template. Using itk-SNAP software, subcortical and cortical regions, including both white matter and gray matter structures, were manually segmented in the axial, sagittal, and coronal planes. The P5, P14, and P72 atlases had 39, 45, and 29 regions segmented, respectively. These atlases have been made available to the broader research community.
Persistence-Length Renormalization of Polymers in a Crowded Environment of Hard Disks
Creators: name: Schöbl, Sebastian
name: Sturm, Sebastian
name: Janke, Wolfhard
name: Kroy, Klaus
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The most conspicuous property of a semiflexible polymer is its persistence length, defined as the decay length of tangent correlations along its contour. Using an efficient stochastic growth algorithm to sample polymers embedded in a quenched two-dimensional hard-disk fluid, we find apparent wormlike chain statistics with a renormalized persistence length. We identify a universal form of the disorder renormalization that suggests itself as a quantitative measure of molecular crowding.
description: 5 pages, 3 figures, accepted for publication in PRL: http://journals.aps.org/prl/accepted/3d074YaeH101ac59529b8205a75f28f8e542c2fab
Letter from Stan Graves to Joseph Logan, Entrance Overhangs General Officer Quarters Building 520, Randolph Air Force Base, Texas
Creators: name: Graves, Stanley O.
Publisher: name: Texas Historical Commission
Year: 1993
Subjects: subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Randolph Air Force Base
valueUri: https://core.tdar.org/browse/geographic-keyword/78971/randolph-air-force-base
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/256/domestic-structures
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Domestic Structure or Architectural Complex
valueUri: https://core.tdar.org/browse/site-type/251/domestic-structure-or-architectural-complex
subject: Building 520
valueUri: https://core.tdar.org/browse/other-keyword/153007/building-520
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: Correspondence written by the Texas Historical Commission to Randolph Air Force Base concerning their proposal to add entrance overhangs to eight General Officer's Quarters which are eligible for the National Register of Historic Places. The Commission does not concur with the determination of no adverse effect and details their concerns. This letter is part of a group of correspondence concerning an undertaking that may effect General Officer housing units at Randolph Air Force Base, Texas. Attachments included with the letters are location maps, description and assessment, photographs, and construction elevations.
An Evaluation of Housing First Programs in Calgary
Creators: name: Kneebone, Ronald
name: Jadidzadeh, Ali
Publisher: name: The School of Public Policy Publications
Year: 2022

description: Calgary is one of many cities internationally that has implemented a Housing First (HF) model for reducing homelessness. The HF model is based on the philosophy that stable housing, provided without preconditions, is a necessary prerequisite for helping someone deal with the issues that have caused them to become homeless. The original HF model, New York City’s Pathways Housing First (PHF) model, has been closely studied with the use of controlled experiments involving clients whose personal characteristics match those for whom the model is designed. Based on the favourable evidence drawn from these controlled experiments, many jurisdictions have implemented HF programs. These include many programs that have drifted a considerable distance from the design of the Pathways model. Despite this drift in program design, HF programs continue to find support from governments comforted by the favourable results of controlled experiments. In this paper we evaluate HF programs implemented in a real world, non-experimental setting over many years. Evaluating HF programs as they are implemented in large scale non-experimental settings is important for determining their practical usefulness to system operators and policymakers. Using richly detailed administrative datasets, we evaluate the success of HF programs as implemented in Calgary over the period 2012 to 2018. We identify the extent of the drift of these HF programs from the original Pathways model and show how the personal characteristics of people chosen for HF programs influence the rate of program success. We find that HF programs in Calgary have proven very successful in graduating people to permanent housing and reducing the number of people returning to homelessness. Fifty-five per cent of clients enrolled in HF programs, many of whom are dealing with the debilitating effects if mental health challenges, substance abuse, and prolonged periods of homelessness, remained housed in HF programs or graduate to permanent housing without case management support. We argue that this rate of success is comparable to that claimed for PHF programs evaluated under controlled conditions and for much shorter periods. Although the devil is in his usual place when it comes to evaluating the success of any HF program, our results are suggestive that limited deviations from the Pathways model, such as those we observed in Calgary, do not significantly affect the rates of success reported from controlled experiments.
description: The School of Public Policy Publications, Vol. 15 No. 1 (2022)
Fine-Granularity Functional Interaction Signatures for Characterization of Brain Conditions
Creators: name: Lv, Peili
name: Hu, Xintao
name: Guo, Lei
name: Li, Kaiming
name: Zhu, Dajiang
name: Han, Junwei
name: Liu, Tianming
name: Shen, Dinggang
name: Wang, Lihong
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: In the human brain, functional activity occurs at multiple spatial scales. Current studies on functional brain networks and their alterations in brain diseases via resting-state functional magnetic resonance imaging (rs-fMRI) are generally either at local scale (regionally confined analysis and inter-regional functional connectivity analysis) or at global scale (graph theoretic analysis). In contrast, inferring functional interaction at fine-granularity sub-network scale has not been adequately explored yet. Here our hypothesis is that functional interaction measured at fine-granularity subnetwork scale can provide new insight into the neural mechanisms of neurological and psychological conditions, thus offering complementary information for healthy and diseased population classification. In this paper, we derived fine-granularity functional interaction (FGFI) signatures in subjects with Mild Cognitive Impairment (MCI) and Schizophrenia by diffusion tensor imaging (DTI) and rsfMRI, and used patient-control classification experiments to evaluate the distinctiveness of the derived FGFI features. Our experimental results have shown that the FGFI features alone can achieve comparable classification performance compared with the commonly used inter-regional connectivity features. However, the classification performance can be substantially improved when FGFI features and inter-regional connectivity features are integrated, suggesting the complementary information achieved from the FGFI signatures.
Perturbative gadgets without strong interactions
Creators: name: Cao, Yudong
name: Nagaj, Daniel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Perturbative gadgets are used to construct a quantum Hamiltonian whose low-energy subspace approximates a given quantum $k$-body Hamiltonian up to an absolute error $ε$. Typically, gadget constructions involve terms with large interaction strengths of order $\text{poly}(ε^{-1})$. Here we present a 2-body gadget construction and prove that it approximates a target many-body Hamiltonian of interaction strength $γ= O(1)$ up to absolute error $ε\llγ$ using interactions of strength $O(ε)$ instead of the usual inverse polynomial in $ε$. A key component in our proof is a new condition for the convergence of the perturbation series, allowing our gadget construction to be applied in parallel on multiple many-body terms. We also show how to apply this gadget construction for approximating 3- and $k$-body Hamiltonians. The price we pay for using much weaker interactions is a large overhead in the number of ancillary qubits, and the number of interaction terms per particle, both of which scale as $O(\text{poly}(ε^{-1}))$. Our strong-from-weak gadgets have their primary application in complexity theory (QMA hardness of restricted Hamiltonians, a generalized area law counterexample, gap amplification), but could also motivate practical implementations with many weak interactions simulating a much stronger quantum many-body interaction.
description: 26 pages, 8 figures
Semi-Supervised Multimodal Relevance Vector Regression Improves Cognitive Performance Estimation from Imaging and Biological Biomarkers
Creators: name: Shen, Dinggang
name: Zhang, Daoqiang
name: Chen, Songcan
name: Kaufer, Daniel I.
name: Cheng, Bo
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Accurate estimation of cognitive scores for patients can help track the progress of neurological diseases. In this paper, we present a novel semi-supervised multimodal relevance vector regression (SM-RVR) method for predicting clinical scores of neurological diseases from multimodal imaging and biological biomarker, to help evaluate pathological stage and predict progression of diseases, e.g., Alzheimer’s diseases (AD). Unlike most existing methods, we predict clinical scores from multimodal (imaging and biological) biomarkers, including MRI, FDG-PET, and CSF. Considering that the clinical scores of mild cognitive impairment (MCI) subjects are often less stable compared to those of AD and normal control (NC) subjects due to the heterogeneity of MCI, we use only the multimodal data of MCI subjects, but no corresponding clinical scores, to train a semi-supervised model for enhancing the estimation of clinical scores for AD and NC subjects. We also develop a new strategy for selecting the most informative MCI subjects. We evaluate the performance of our approach on 202 subjects with all three modalities of data (MRI, FDG-PET and CSF) from the Alzheimer’s Disease Neuroimaging Initiative (ADNI) database. The experimental results show that our SM-RVR method achieves a root-mean-square error (RMSE) of 1.91 and a correlation coefficient (CORR) of 0.80 for estimating the MMSE scores, and also a RMSE of 4.45 and a CORR of 0.78 for estimating the ADAS-Cog scores, demonstrating very promising performances in AD studies.
1950 forderten die Ingenieurstudenten; 1968
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Technischen Universität Berlin
Year: 2018

description: Enthält u. a.: Forderung des Studentenverbandes Deutscher Ingenieurschulen (SVI) nach Änderung des Status der Ingenieurschulen, nach Selbstverwaltungsrechten und nach Neuordnung der Eingangsvoraussetzungen.- Ankündigung eines Streiks der Ingenieurstudenten und Dozenten in der Bundesrepublik. 1 Blatt. Mehrfarbig.
Computer-assisted proof of shear-induced chaos in stochastically perturbed Hopf systems
Creators: name: Breden, Maxime
name: Engel, Maximilian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 35P99, 37-04, 37M25, 37H15, 60J99

description: We confirm a long-standing conjecture concerning shear-induced chaos in stochastically perturbed systems exhibiting a Hopf bifurcation. The method of showing the main chaotic property, a positive Lyapunov exponent, is a computer-assisted proof. Using the recently developed theory of conditioned Lyapunov exponents on bounded domains and the modified Furstenberg-Khasminskii formula, the problem boils down to the rigorous computation of eigenfunctions of the Kolmogorov operators describing distributions of the underlying stochastic process.
An die neue Irakische Regierung; 1968
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Technischen Universität Berlin
Year: 2018

description: Enthält u. a.: Offener Brief von Allgemeiner Studentenausschuss der Freien Universität, Allgemeiner Studentenausschuss der TU Berlin, Sozialistischer Deutscher Studentenbund (SDS) Berlin, Republikanischer Club (RC) Berlin, Liberaler Studentenbund Deutschland (LSD) Berlin, Sozialdemokratischer Hochschulbund (SHB) Berlin, Iranische Studenten-Vereinigung (ISV) Berlin, Türkische Studentenvereinigung in Berlin, Groupe l´Etudes et d´Action Socialistes Tunesien (G.E.A.S.T.), Vereinigung irakischer Studenten (VIS) Berlin an die neue irakische Regierung, die Arabische Liga, die UNO-Menschenrechtskommision in Genf und das Internationale Rote Kreuz in Genf.- Freiheit der politischen Gefangenen im Irak nach dem Putsch vom 8. Feb. 1963.- Hungerstreik am 18. Juli 1968. 1 Blatt. S/w.
Identifying Informative Imaging Biomarkers via Tree Structured Sparse Learning for AD Diagnosis
Creators: name: Zhang, Daoqiang
name: Liu, Manhua
name: Shen, Dinggang
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Neuroimaging provides a powerful tool to characterize neurodegenerative progression and therapeutic efficacy in Alzheimer’s disease (AD) and its prodromal stage—mild cognitive impairment (MCI). However, since the disease pathology might cause different patterns of structural degeneration, which is not pre-known, it is still a challenging problem to identify the relevant imaging markers for facilitating disease interpretation and classification. Recently, sparse learning methods have been investigated in neuroimaging studies for selecting the relevant imaging biomarkers and have achieved very promising results on disease classification. However, in the standard sparse learning method, the spatial structure is often ignored, although it is important for identifying the informative biomarkers. In this paper, a sparse learning method with tree-structured regularization is proposed to capture patterns of pathological degeneration from fine to coarse scale, for helping identify the informative imaging biomarkers to guide the disease classification and interpretation. Specifically, we first develop a new tree construction method based on the hierarchical agglomerative clustering of voxel-wise imaging features in the whole brain, by taking into account their spatial adjacency, feature similarity and discriminability. In this way, the complexity of all possible multi-scale spatial configurations of imaging features can be reduced to a single tree of nested regions. Second, we impose the tree-structured regularization on the sparse learning to capture the imaging structures, and then use them for selecting the most relevant biomarkers. Finally, we train a support vector machine (SVM) classifier with the selected features to make the classification. We have evaluated our proposed method by using the baseline MR images of 830 subjects from the Alzheimer’s Disease Neuroimaging Initiative (ADNI) database, which includes 198 AD patients, 167 progressive MCI (pMCI), 236 stable MCI (sMCI), and 229 normal controls (NC). Our experimental results show that our method can achieve accuracies of 90.2 %, 87.2 %, and 70.7 % for classifications of AD vs. NC, pMCI vs. NC, and pMCI vs. sMCI, respectively, demonstrating promising performance compared with other state-of-the-art methods.
Kommilitoninnen und Kommilitonen!; 1968
Creators: name: (:Unav)
Publisher: name: Universitätsbibliothek der Technischen Universität Berlin
Year: 2018

description: Enthält u. a.: Wahlaufruf der Unabhängigen Aktionsgemeinschaft an der TU Berlin (UAG) zur Wahl des 24. Studentenparlaments der TU Berlin vom 11. bis 15. Juni 1968. 1 Seite. Mehrfarbig.
The Traps Have Sprung? Sino-American Challenges for Hegemonic Leadership
Creators: name: Gaudreault, Charlie
name: Duchesne, Érick
Publisher: name: The School of Public Policy Publications
Year: 2022

description: In an ambivalent twist of foreign policy, the Trump administration reordered Washington’s stance towards Beijing. In the wake of its tense relationship with China, the United States has abandoned much of its international leadership. There were high hopes of renewed American commitment to the international order when Joe Biden was elected in November 2020. The prospect for a greater international guidance from the Biden administration has yet to lead to a cohesive policy. In contrast, under the strong hand of Xi Jinping, China has taken a more decisive role in international affairs. It remains to be seen, however, if the rest of the world is ready to follow in China’s footsteps. This state of affairs leaves us in the uncomfortable situation where we must assess two daunting traps facing the future of the international system. On one hand, reminiscent of Thucydides’ trap, we face the possibility of an escalation of tension that could inexorably lead to a direct confrontation between the two superpowers. On the other hand, an even less appealing scenario would take the form of a rudderless world bringing back painful memories of the 1930s. In this paper, we assess these two eventual consequences of the Sino-American confrontation, as well as possibilities of escaping those traps.
description: The School of Public Policy Publications, Vol. 15 No. 1 (2022)
OAHP Inventory, Building 2429 Vehicle Storage, Fort Sam Houston, Texas
Creators: name: Walter, Chelsea
Publisher: name: Office of Archaeology and Historic Preservation
Year: 1978
Subjects: subject: Fort Sam Houston
valueUri: https://core.tdar.org/browse/geographic-keyword/83681/fort-sam-houston
subject: San Antonio
valueUri: https://core.tdar.org/browse/geographic-keyword/4149/san-antonio
subject: Bexar (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/4150/bexar-county
subject: Texas
valueUri: https://core.tdar.org/browse/geographic-keyword/6923/texas
subject: Historic
valueUri: https://core.tdar.org/browse/culture-keyword/25/historic
subject: Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/318/governmental-structure
subject: Historic Governmental Structure
valueUri: https://core.tdar.org/browse/site-type/320/historic-governmental-structure
subject: Non-Domestic Structures
valueUri: https://core.tdar.org/browse/site-type/309/non-domestic-structures
subject: OAHP
valueUri: https://core.tdar.org/browse/other-keyword/138292/oahp
subject: Vehicle Storage
valueUri: https://core.tdar.org/browse/other-keyword/159096/vehicle-storage
subject: Building 2429
valueUri: https://core.tdar.org/browse/other-keyword/146582/building-2429
subject: Architectural Documentation
valueUri: https://core.tdar.org/browse/investigation-type/16/architectural-documentation
subject: Architectural Survey
valueUri: https://core.tdar.org/browse/investigation-type/2/architectural-survey
subject: Heritage Management
valueUri: https://core.tdar.org/browse/investigation-type/24/heritage-management

description: An inventory form by the Office of Archaeology and Historic Preservation for Building 2429 at Fort Sam Houston, Texas. The structure was built in 1960 as a vehicle storage.
Current-driven dynamics of coupled domain walls in a synthetic antiferromagnet
Creators: name: Saarikoski, Henri
name: Kohno, Hiroshi
name: Marrows, Christopher H.
name: Tatara, Gen
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We develop the theory of magnetic domain wall motion in coupled double-layer systems where electrons can hop between the layers giving rise to an antiferromagnetic coupling. We demonstrate that the force from the interlayer coupling drives the walls and the effect of the extrinsic pinning is greatly reduced if the domain walls are initially separated. The threshold current density for metastable spin-aligned configurations is also much lower. We conclude that the interlayer coupling has a significant effect on domain wall mobility in double-layer systems.
description: 9 pages, 9 figures
Bosons in a double well: two-mode approximation and fluctuations
Creators: name: Olgiati, Alessandro
name: Rougerie, Nicolas
name: Spehner, Dominique
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the ground state for many interacting bosons in a double-well potential, in a joint limit where the particle number and the distance between the potential wells both go to infinity. Two single-particle orbitals (one for each well) are macroscopically occupied, and we are concerned with deriving the corresponding effective Bose-Hubbard Hamiltonian. We prove (i) an energy expansion, including the two-modes Bose-Hubbard energy and two independent Bogoliubov corrections (one for each potential well), (ii) a variance bound for the number of particles falling inside each potential well. The latter is a signature of a correlated ground state in that it violates the central limit theorem.