cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On the Ionization of a Keplerian Binary System by Periodic Gravitational Radiation
Creators: name: Chicone, Carmen
name: Mashhoon, Bahram
name: Retzloff, David
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The gravitational ionization of a Keplerian binary system via normally incident periodic gravitational radiation of definite helicity is discussed. The periodic orbits of the planar tidal equation are investigated on the basis of degenerate continuation theory. The relevance of the Kolmogorov-Arnold-Moser theory to the question of gravitational ionization is elucidated, and it is conjectured that the process of ionization is closely related to the Arnold diffusion of the perturbed system.
description: 19 pages, REVTEX Style, To appear in JMP
Additional file 1 of TIGIT is the central player in T-cell suppression associated with CAR T-cell relapse in mantle cell lymphoma
Creators: name: Jiang, Vivian Changying
name: Hao, Dapeng
name: Jain, Preetesh
name: Li, Yijing
name: Cai, Qingsong
name: Yao, Yixin
name: Nie, Lei
name: Liu, Yang
name: Jin, Jingling
name: Wang, Wei
name: Lee, Heng-Huan
name: Che, Yuxuan
name: Dai, Enyu
name: Han, Guangchun
name: Wang, Ruiping
name: Rai, Kunal
name: Futreal, Andrew
name: Flowers, Christopher
name: Wang, Linghua
name: Wang, Michael
Publisher: name: figshare
Year: 2022
Subjects: subject: Biophysics
subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Supplementary Fig. S1. Cellular composition of immune cells in tumor microenvironment. Supplementary Fig. S2. Endogenous T cell clones expanded during responsive stage but depleted post relapse. Supplementary Fig. S3. Endogenous T cells post relapse are functionally deficient. Supplementary Fig. S4. Checkpoint inhibitors, HLA II molecules and hallmark pathways in monocyte subsets. Supplementary Fig. S5. Expression of cell surface genes and enriched hallmark pathways in MCL tumor cells. Supplementary Fig. S6. CXCR3 is overexpression in exhausted CD8 T cells and sIL2R and IL-2 failed to induce ex vivo cell expansion of PBMC collected post relapse. Supplementary Table S1. Summary of clinical characteristics of 15 patients with MCL. Supplementary Table S2. Summary of clinical characteristics for patients with MCL. Supplementary Table S3. Analytes included in the 65-plex and 20-plex assays for cytokine profiling.
Analysis of the hidden-bottom tetraquark mass spectrum with the QCD sum rules
Creators: name: Wang, Zhi-Gang
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this article, we extend our previous work to study the mass spectrum of the ground state hidden-bottom tetraquark states with the QCD sum rules in a systematic way. The predicted hidden-bottom tetraquark masses can be confronted to the experimental data in the future to diagnose the nature of the $Z_b$ states. In calculations, we observe that the scalar diquark states, the axialvector diquark states and the axialvector components of the tensor diquark state are all good diquarks in building the lowest tetraquark states.
description: 15 pages, 24 figures. arXiv admin note: text overlap with arXiv:1903.03468
Autism - Beyond the childTaking care of the parent's Quality of life
Creators: name: Indian Journal of Developmental and Behavioural Pediatrics (IJDBP)
Publisher: name: Neuro Developmental Chapter of Indian academy of Pediatrics (NDPIAP).
Year: 2024
Subjects: Autism - Beyond the childTaking

description: Children diagnosed with autism spectrum disorder (ASD) have impaired social functions, exhibit repetitive, stereotyped, and self-stimulatory behaviour, and often exhibit a significant delay in the development of verbal interactions
Lewes Dissenters Outside the Law, 1663-86
Creators: name: Brent, C
Publisher: name: Archaeology Data Service
Year: 2021

description: Sussex Archaeological Collections, 123, 195-214
description: Dissenters in Lewes are examined during the period of proscription and intermittent prosecution which lasted from 1663 to 1686. Estimates are made of their number, occupational spread and social weight, and the character of each congregation is discussed.
Oasthouses in Ewhurst Parish; Evidence for the History of an Industry
Creators: name: Jones, Gwen
Publisher: name: Archaeology Data Service
Year: 2021

description: Sussex Archaeological Collections, 126, 195-224
description: Oasthouses are valued for their contribution to the south-eastern landscape. Their interest is not merely aesthetic, however. Very few are still used for hop drying, but while they are still in agricultural use, they retain features and details which show the development of the industry for which they were built. Although conversion to other uses preserves to a greater or lesser extent their outward appearance, that same conversion usually removes entirely the features of historical value and it is important that remaining buildings be recorded. This article seeks to chart the progress of the industry in one parish by using the evidence of the oasthouses themselves set within a framework of documentary research.
Two-species hardcore reversible cellular automaton: matrix ansatz for dynamics and nonequilibrium stationary state
Creators: name: Medenjak, Marko
name: Popkov, Vladislav
name: Prosen, Tomaž
name: Ragoucy, Eric
name: Vanicat, Matthieu
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper we study the statistical properties of a reversible cellular automaton in two out-of-equilibrium settings. In the first part we consider two instances of the initial value problem, corresponding to the inhomogeneous quench and the local quench. Our main result is an exact matrix product expression of the time evolution of the probability distribution, which we use to determine the time evolution of the density profiles analytically. In the second part we study the model on a finite lattice coupled with stochastic boundaries. Once again we derive an exact matrix product expression of the stationary distribution, as well as the particle current and density profiles in the stationary state. The exact expressions reveal the existence of different phases with either ballistic or diffusive transport depending on the boundary parameters.
Vertex Models with Alternating Spins
Creators: name: Hong, Jin
name: Kang, Seok-Jin
name: Miwa, Tetsuji
name: Weston, Robert
Publisher: name: arXiv
Year: 1998
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The diagonalisation of the transfer matrices of solvable vertex models with alternating spins is given. The crystal structure of (semi-)infinite tensor products of finite-dimensional $U_q(\hat{sl}_2)$ crystals with alternating dimensions is determined. Upon this basis the vertex models are formulated and then solved by means of $U_q(\hat{sl}_2)$ intertwiners.
description: 54 pages, uses epic.sty and texdraw.sty (references added)
Megapixel Photon-Counting Color Imaging using Quanta Image Sensor
Creators: name: Gnanasambandam, Abhiram
name: Elgendy, Omar
name: Ma, Jiaju
name: Chan, and Stanley H.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Quanta Image Sensor (QIS) is a single-photon detector designed for extremely low light imaging conditions. Majority of the existing QIS prototypes are monochrome based on single-photon avalanche diodes (SPAD). Passive color imaging has not been demonstrated with single-photon detectors due to the intrinsic difficulty of shrinking the pixel size and increasing the spatial resolution while maintaining acceptable intra-pixel cross-talk. In this paper, we present image reconstruction of the first color QIS with a resolution of $1024 \times 1024$ pixels, supporting both single-bit and multi-bit photon counting capability. Our color image reconstruction is enabled by a customized joint demosaicing-denoising algorithm, leveraging truncated Poisson statistics and variance stabilizing transforms. Experimental results of the new sensor and algorithm demonstrate superior color imaging performance for very low-light conditions with a mean exposure of as low as a few photons per pixel in both real and simulated images.
Cytotoxicity of nanoparticles - Are the size and shape only matters? or the media parameters too?: a study on band engineered ZnS nanoparticles and calculations based on equivolume stress model
Creators: name: Manikanta Bayal
name: Prajit Janardhanan
name: Tom, Emmanuel
name: Neeli Chandran
name: S. Devadathan
name: D. Ranjeet
name: Unnikrishnan Unniyampurath
name: Pilankatta, Rajendra
name: Nair, Swapna S.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Space Science
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 60506 Virology

description: Size dependent cytotoxicity of ZnS nanoparticles (NPs) was investigated in Human embryonic kidney (HEK-293) cell lines by MTT assay. The cells were incubated with varying concentration of ZnS NPs of sizes 4 nm, 10 nm and 25 nm for 48 h under different (cell culture) media viscosity conditions. The results showed that the toxicity is decreased with the particle size while it is negatively correlated with the viscosity of the media. Theoretical calculations were performed, by assuming equivolume stress model and the same is explained with schematics. Similarly, the effect of particle size and shape on toxicity is explained based on the theoretical calculation of the stress. The calculations showed that out of the possible cellular entry mechanisms for the cubic or cage shaped NPs, the highest toxicity is predicted for the entry through the corners while the lowest toxicity is predicted for the entry through the faces. The experimental observations depicting the cytotoxicity as a function of the viscosity of cell culture media was also validated by stress calculations and are found to be consistent. Studies on size and shape dependence of semiconductor NPs like ZnS is rather scarce, while the role of viscosity of cell culture media on the cytotoxicity is being reported for the first time. In summary, the study indicates that the cytotoxicity is an integral function of size and shape of NPs, physical parameters of the cell culture media in addition to the post entry biochemical interactions with the host cell.
Herbstellus pachylopus
Creators: name: Kurczewski, Frank E.
name: West, Rick C.
name: Waichert, Cecilia
name: Pitts, James P.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Pompilidae
Herbstellus
Herbstellus pachylopus

description: Herbstellus pachylopus (Kohl)
 CHILE: Coquimbo Region, Elqui Province, La Serena; 13 January 2021; S. Torres (Fotos de Vultur). Host: Lycinus sp. (Nemesiidae), adult or subadult female. The wasp grasped the immobilized spider’s left foretrochanter with her mandibles, and maintaining it dorsal side upward, walked backwards on the ground (Fig. 14; Torres 2021; Torres Zañartu, Santiago, Chile, 2021 pers. comm.).
description: Published as part of Kurczewski, Frank E., West, Rick C., Waichert, Cecilia & Pitts, James P., 2022, Additional new and unusual host records for Western Hemisphere spider wasps (Hymenoptera: Pompilidae), pp. 1-32 in Insecta Mundi 2022 (928) on page 4, DOI: 10.5281/zenodo.6533498
Network Models of the Lateral Intraparietal Area
Creators: Zhang, Wujie
Publisher: name: Columbia University
Year: 2016
Subjects: subject: Attention--Physiological aspects
subject: Neurosciences
subject: FOS: Clinical medicine
subject: Neurobiology
subject: Eye--Movements

description: The monkey lateral intraparietal area (LIP) is involved in visual attention and eye movements. It has traditionally been studied using extracellular recording, where often a single neuron is recorded at a time. Thus we have a wealth of correlational knowledge of what LIP neurons do, but not how or why, i.e. we do not know the circuit mechanisms and functions of the observed LIP activity. In this thesis, we have aimed to uncover the circuit mechanisms underlying LIP activity by building tightly constrained computational models.
      	In Part 1, we found that during two versions of a delayed-saccade task, beneath similar population average firing patterns across time lie radically different network dynamics. When neurons are not influenced by stimuli outside their receptive fields (RFs), dynamics of the high-dimensional LIP network lie predominantly in one multi-neuronal dimension, as predicted by an earlier model. However, when activity is suppressed by stimuli outside the RF, LIP dynamics markedly deviate from a single dimension. The conflicting results can be reconciled if two LIP local networks, each dominated by a single multi-neuronal activity pattern, are suppressively coupled to each other. These results demonstrate the low dimensionality of LIP local dynamics and suggest active involvement of LIP recurrent circuitry in surround suppression and, more generally, in processing attentional and movement priority and in related cognitive functions.
      	In Part 2, we examine the mechanisms of learning in LIP. When monkeys learn to group visual stimuli into arbitrary categories, LIP neurons become category-selective. Surprisingly, the representations of learned categories are overwhelmingly biased: while different categories are behaviorally equivalent, nearly all LIP neurons in a given animal prefer the same category. We propose that Hebbian plasticity, at the synapses to LIP from prefrontal cortex and from lower sensory areas, could lead to the development of biased representations. In our model, LIP category selectivity arises due to competition between inputs encoding different categories, and bias develops due to excitatory lateral interactions among LIP neurons. This model reproduces the different levels of category selectivity and bias observed in multiple experiments. Our results suggest that the connectivity of LIP allows it to learn the behavioral importance of stimuli in order to guide attention.
Renormalization group approach to neutron matter: quasiparticle interactions, superfluid gaps and the equation of state
Creators: name: Schwenk, Achim
name: Friman, Bengt
name: Brown, Gerald E.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Renormalization group methods can be applied to the nuclear many-body problem using the approach proposed by Shankar. We start with the two-body low momentum interaction V_{low k} and use the RG flow from the particle-hole channels to calculate the full scattering amplitude in the vicinity of the Fermi surface. This is a new straightforward approach to the many-body problem which is applicable also to condensed matter systems without long-range interactions, such as liquid 3He. We derive the one-loop renormalization group equations for the quasiparticle interaction and the scattering amplitude at zero temperature. The RG presents an elegant method to maintain all momentum scales and preserve the antisymmetry of the scattering amplitude. As a first application we solve the RG equations for neutron matter. The resulting quasiparticle interaction includes effects due to the polarization of the medium, the so-called induced interaction of Babu and Brown. We present results for the Fermi liquid parameters, the equation of state of neutron matter and the 1S0 superfluid pairing gap.
description: 31 pages, 9 figures, minor revisions, to appear in Nucl. Phys. A
Additional file 1 of SHTXTHHly, an extracellular secretion platform for the preparation of bioactive peptides and proteins in Escherichia coli
Creators: name: Zhu, Wen
name: Wang, Yang
name: Lv, Liangyin
name: Wang, Hui
name: Shi, Wenqiang
name: Liu, Zexin
name: Yang, Wei
name: Zhu, Jianwei
name: Lu, Huili
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Figure S1. Intracellular expression of the tag fusion proteins. SDS-PAGE analysis of culture samples. The tag fusion proteins are indicated above the image. The arrows indicate the tag fusion proteins. Figure S2. Thermal stability of the bio-produced AMPs. E. coli 25922 cells were spread over the LB agar plates containing filter-sterilized or autoclave-sterilized bio-produced PEW300/LL37, and incubated at 37 °C for 18 hrs. Nothing was added in the control group. Figure S3. Expression and purification of the RGDS (A), IL-15 (B), and ADH (C) fusion proteins. SDS-PAGE analysis of culture samples. W: Whole-cell lysate; S: Supernatant. IB: Inclusion body; So: Soluble proteins; S: Supernatant; FT: Flow-through; E: Eluent. The fusion proteins are indicated above the image. The arrows indicate the target fusion proteins. Figure S4. Dimerization determination of the HFc and H’mFc proteins. The sample of the HFc and H’mFc proteins were heated (95 °C, 10 min) or non-heated, then analyzed by SDS-PAGE under reducing or non-reducing conditions. NR: Non-reducing; R: Reducing; H: Heating; NH: Non-heating. Figure S5. ADCC effects mediated by bacteria-produced antibodies. The specific lysis for bacteria-produced antibodies opsonized U87 MG cells were detected by LDH Cytotoxicity Assay Kit after 4 hrs of co-incubation (E:T ratio=5). The 1-tailed Student's t-test was used to determine statistical differences between two groups. Table S1. Peptides/proteins used in this study. Table S2. Site mutated tags used in this study.
The Society of Dependents: Case Study in the Rise and Fall of Rural Peculiars
Creators: name: Homan, Roger
Publisher: name: Archaeology Data Service
Year: 2021

description: Sussex Archaeological Collections, 119, 195-204
description: The Society of Dependents constitutes a provincial religious sect centred in West Sussex and hitherto apparently undiscovered by scholarly students of religion in Britain, though from time to time noted as a curiosity in Sussex books and magazines; to this extent, the Dependents warrant and are here given a comprehensive introduction. This article documents the origins, distinctive doctrines and organization of the Dependents and attempts to relate to these the burgeoning of the Dependents in the late nineteenth century and their subsequent decline. It has been researched principally by interviewing surviving Dependents and from unpublished manuscripts in their possession.
An Investigation into Income Distribution in Zanjan Province: A Case Study of Rural Households in Abhar County
Creators: name: Teimoori, Mostafa
name: Rajaee, Nina
name: Hajian, Mohammadhadi
name: Teimoori, Mostafa
name: Rajaee, Nina
name: Hajian, Mohammadhadi
Publisher: name: Unknown
Year: 2017
Subjects: subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: Abhar
subject: income distribution
subject: the Gini coefficient
subject: Lorenz curve
subject: rural areas

description: The present study aims to investigate income distribution in Zanjan Province, for which the statistics of cost-income of the households in rural areas of Abhar County were used. They were available in the Statistical Center of Iran. In order to measure income distribution, the indicators of Lorenz curve, the Gini coefficient, the proportion of high-income groups to lowincome groups, as well as the comparison of decades and quintiles are described below. The results indicated that 20% of the richest households in the rural community of Abhar County had more than half of the revenue, and four poor decades had less than 10% of revenue. The richest farmer docile had an income about 28 times as high as the poorest decade, and the richest non-farmer docile had an income about 74 times as high as the poorest non-farmer docile. The results of the Gini coefficient of the two occupational groups suggested that the Gini coefficient of people working in the agricultural sector was equal to 0.55, and that it was 0.56 for non-agricultural workers by comparison. The results of correlation analysis indicated a negative relationship between the age of household’s head and their annual income. Moreover education level of household’s head had a positive relationship with their annual income. In addition, there was no significant difference among annual incomes of households heads with different occupational groups.
Seed Potato Management among Potato Growers in Freydunshahr County (Isfahan Province), Iran
Creators: name: Bagheri, Asghar
name: Sooktanlou, Mojtaba
name: Bagheri, Asghar
name: Sooktanlou, Mojtaba
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Freydunshahr County
subject: potato seed tuber
subject: potato growers
subject: seed quality

description: This study investigated the mechanisms of seed potato management by potato growers of Freydunshahr County in Isfahan province. Survey research method was used in this study. A sample of 250 potato growers (N=725) was selected for data collection. Stratified random sampling method was used. The research instrument was a questionnaire that was validated for face validity by a panel of faculty members and agricultural experts of Agriculture Jihad Organization in Freydunshahr County. For determining the reliability, Cronbach's alpha was estimated which turned to be higher than 0.7. Results showed that "a part of tubers produced by farmers" was the first priority of farmers as seed tuber source. Results showed that 89.6 percent of potato growers store and keep seed tubers in inappropriate conditions. Majority of the farmers did not have sufficient information on seed potato management and there was a positive and significant relationship between the farmers’ education and potato yield per hectare, but a negative relationship was found for age. Based on logistic regression analysis, the predictive power of the model was 0.639 and the sensitivity of total model to determine the correct percentage was 86.0 percent. Among individual, professional and economic factors, variables of age, number of family labor, area of owned land, area of potato farming, potato yield per hectare, number of owned land parcels and knowledge and information level of respondents significantly impacted on the adoption and use of modern seed potato production systems.
Manifolds with singularities accepting a metric, of positive scalar curvature
Creators: name: Botvinnik, Boris
Publisher: name: arXiv
Year: 1999
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: Algebraic Topology (math.AT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 57R15, 53C21, 55T15, 57R90

description: We study the question of existence of a Riemannian metric of positive scalar curvature metric on manifolds with the Sullivan-Baas singularities. The manifolds we consider are Spin and simply connected. We prove an analogue of the Gromov-Lawson Conjecture for such manifolds in the case of particular type of singularities. We give an affirmative answer when such manifolds with singularities accept a metric of positive scalar curvature in terms of the index of the Dirac operator valued in the corresponding "K-theories with singularities". The key ideas are based on the construction due to Stolz, some stable homotopy theory, and the index theory for the Dirac operator applied to the manifolds with singularities. As a side-product we compute homotopy types of the corresponding classifying spectra.
description: Published by Geometry and Topology at http://www.maths.warwick.ac.uk/gt/GTVol5/paper22.abs.html
Constructing $J/ψ$ family with updated data of charmoniumlike $Y$ states
Creators: name: Wang, Jun-Zhang
name: Chen, Dian-Yong
name: Liu, Xiang
name: Matsuki, Takayuki
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Based on the updated data of charmoniumlike state $Y(4220)$ reported in the hidden-charm %and open-charm channels of the $e^+e^-$ annihilation, we propose a $4S$-$3D$ mixing scheme to categorize $Y(4220)$ into the $J/ψ$ family. We find that the present experimental data can support this charmonium assignment to $Y(4220)$. Thus, $Y(4220)$ plays a role of a scaling point in constructing higher charmonia above 4 GeV. To further test this scenario, we provide more abundant information on the decay properties of $Y(4220)$, and predict its charmonium partner $ψ(4380)$, whose evidence is found by analyzing the $e^+e^-\to ψ(3686)π^+π^-$ data from BESIII. If $Y(4220)$ is indeed a charmonium, we must face how to settle the established charmonium $ψ(4415)$ in the $J/ψ$ family. In this work, we may introduce a $5S$-$4D$ mixing scheme, and obtain the information of the resonance parameters and partial open-charm decay widths of $ψ(4415)$, which do not contradict the present experimental data. Additionally, we predict a charmonium partner $ψ(4500)$ of $ψ(4415)$, which can be accessible at future experiments, especially, BESIII and BelleII. The studies presented in this work provide new insights to establish the higher charmonium spectrum.
description: 15 pages, 10 figures and 4 tables. Accepted by Phys. Rev. D
title: On the Efficient Update of the Singular Value Decomposition Subject to Rank-One Modifications
Creators: name: Stange, Peter
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2011
Subjects: subject: Singulärwertzerlegung
subject: Niedrigrangaufdatierung
subject: Rang-1 Modifikation
subject: Aufdatierung der Singulärwertzerlegung
subject: singular value decomposition
subject: low-rank updating
subject: rank-1 modification
subject: updating the singular value decomposition
subject: 51

description: In this paper we present an efficient method for updating the singular value decomposition (SVD) subject to a rank-one modification. The updated SVD can be characterized by two problems involving symmetric matrices. The singular values corresponding to these symmetric problems are computed by solving a secular equation. The secular equation can be solved reliably and efficiently with standard software. The singular vectors can be updated efficiently with a few matrix-matrix products. The computational effort to compute the matrix-matrix products can be considerably decreased by exploiting that some matrices are of Cauchy-type. We analyze several methods which exploit this structure. The computational complexity of the proposed approach is O(n2 log2 n).
Neoadjuvant Chemotherapy Monitoring of Breast Cancer Patients with Diffuse Optical Tomographic Imaging
Creators: Gunther, Jacqueline E.
Publisher: name: Columbia University
Year: 2016
Subjects: Breast--Cancer--Treatment
Cancer--Chemotherapy
Biomedical engineering
Breast--Cancer
Diagnostic imaging

description: The overall goal of this thesis was to determine whether optical tomographic imaging can be employed to predict treatment outcome in women with breast cancer (BC) who undergo neoadjuvant chemotherapy (NACT). NACT is widely applied as a standard treatment for patients with newly diagnosed operable invasive BC.  Only about 13-30% of women have a response to this treatment.  Furthermore, NACT is an expensive and toxic treatment that takes several months to completely administer.  In order to know the response of the patient, physicians usually need to wait until the months of NACT has finished and the patient has undergo surgery in which they receive the pathology.  If the long-term treatment response could be predicted early into the treatment regimen, the patient would be relieved of any unnecessary side effects and alternative treatments could be initiated.  We have used a novel dynamic DOT system to study the effects of targeted NACT. Unlike X-ray imaging, which requires potentially harmful ionizing radiation, DOT can be applied without side effects, which is particularly important in the case of multiple imaging sessions to be performed over the course of treatment.  We have tracked 40 subjects and imaged them at 6 different time points during their NACT.  For this study, two different types of data were collected: static (single 3D image) and dynamic (3D movies).  The combination of the data may be used to accurately determine the response of the patient.  With non-invasive, non-ionizing DOT imaging we have been able to determine within two weeks if the patient will respond to treatment with an accuracy as high as 94.1%.
Statistical analyses - Data and Scripts - Depressive symptoms are associated with blunted reward learning in social contexts
Creators: name: Safra, Lou
Publisher: name: figshare
Year: 2019
Subjects: subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology

description: R Scripts and Data used for the analyses presented in Depressive symptoms are associated with blunted reward learning in social contexts
Pepsis heros
Creators: name: Kurczewski, Frank E.
name: West, Rick C.
name: Waichert, Cecilia
name: Pitts, James P.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Pompilidae
Pepsis
Pepsis heros

description: Pepsis heros (Fabricius)
 FRENCH GUIANA: 3 km S of Nancibo, Sourou Creek, Le Sourou Ecolodge; 24 October 2021; C. Leblond. Host: Theraphosa blondi (Latreille) (Theraphosidae), adult or subadult female. A photograph and video show the wasp dragging the paralyzed Goliath birdeater tarantula, dorsal side upward, over leaf litter on the ground, grasping the base of its left pedipalp with her mandibles (Leblond 2021).
description: Published as part of Kurczewski, Frank E., West, Rick C., Waichert, Cecilia & Pitts, James P., 2022, Additional new and unusual host records for Western Hemisphere spider wasps (Hymenoptera: Pompilidae), pp. 1-32 in Insecta Mundi 2022 (928) on page 4, DOI: 10.5281/zenodo.6533498
Network Resource Allocation Under Fairness Constraints
Creators: Chandramouli, Shyam Sundar
Publisher: name: Columbia University
Year: 2014
Subjects: Operations research

description: This work considers the basic problem of allocating resources among a group of agents in a network, when the agents are equipped with single-peaked preferences over their assignments. This generalizes the classical claims problem, which concerns the division of an estate's liquidation value when the total claim on it exceeds this value. The claims problem also models the problem of rationing a single commodity, or the problem of dividing the cost of a public project among the people it serves, or the problem of apportioning taxes. A key consideration in this classical literature is equity: the good (or the ``bad,'' in the case of apportioning taxes or costs) should be distributed as fairly as possible. The main contribution of this dissertation is a comprehensive treatment of a generalization of this classical rationing problem to a network setting.
      Bochet et al. recently introduced a generalization of the classical rationing problem to the network setting. For this problem they designed an allocation mechanism---the egalitarian mechanism---that is Pareto optimal, envy free and strategyproof. In chapter 2, it is shown that the egalitarian mechanism is in fact group strategyproof, implying that no coalition of agents can collectively misreport their information to obtain a (weakly) better allocation for themselves. Further, a complete characterization of the set of all group strategyproof mechanisms is obtained.
      The egalitarian mechanism satisfies many attractive properties, but fails consistency, an important property in the literature on rationing problems. It is shown in chapter 3 that no Pareto optimal mechanism can be envy-free and consistent. Chapter 3 is devoted to the edge-fair mechanism that is Pareto optimal, group strategyproof, and consistent. In a related model where the agents are located on the edges of the graph rather than the nodes, the edge-fair rule is shown to be envy-free, group strategyproof, and consistent.
      Chapter 4 extends the egalitarian mechanism to the problem of finding an optimal exchange in non-bipartite networks. The results vary depending on whether the commodity being exchanged is divisible or indivisible. For the latter case, it is shown that no efficient mechanism can be strategyproof, and that the egalitarian mechanism is Pareto optimal and envy-free. Chapter 5 generalizes recent work on finding stable and balanced allocations in graphs with unit capacities and unit weights to more general networks. The existence of a stable and balanced allocation is established by a transformation to an equivalent unit capacity network.
The sAKNS Hierarchy
Creators: name: Aratyn, Henrik
name: Das, Ashok
Publisher: name: arXiv
Year: 1997
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study, systematically, the properties of the supersymmetric AKNS (sAKNS) hierarchy. In particular, we discuss the Lax representation in terms of a bosonic Lax operator and some special features of the equations and construct the bosonic local charges as well as the fermionic nonlocal charges associated with the system starting from the Lax operator. We obtain the Hamiltonian structures of the system and check the Jacobi identity through the method of prolongation. We also show that this hierarchy of equations can equivalently be described in terms of a fermionic Lax operator. We obtain the zero curvature formulation as well as the conserved charges of the system starting from this fermionic Lax operator which suggests a connection between the two. Finally, starting from the fermionic description of the system, we construct the soliton solutions for this system of equations through Darboux-Backlund transformations and describe some open problems.
description: LaTeX, 16 pgs
Neo-traditional, volcanic pozzolan-lime mortars for the repair of
historic structures
Creators: Baragona, Anthony John
Publisher: name: Columbia University
Year: 2012
Subjects: subject: Architecture
subject: FOS: Civil engineering

description: The object of this research is to examine the possibilities of using naturally occurring volcanic pozzolans in lime-cement mortars for the repair of historic structures. Water vapor transmissivity, tensile splitting strength and set time are crucial performance criteria for historic repair mortars. Mortars samples were prepared from three different pozzolans: ground pozzolana from Pozzuoli, Italy; ground Rhenish trass from Andernach, Germany; and ground ash from Mount St. Helens in Washington State. The samples were tested by Vicat apparatus (per ASTM C807) during their initial set to gauge pozzolanic activity levels. After a curing period, the samples were tested for rate of water vapor transmission (per ASTM E96) as well as subjected to tensile strength testing (per ASTM D3967). The resultant data was compared to that of control mortar samples made of portland cement and lime, comparable to ASTM 'Type N' and 'Type O' mortars commonly used in repair of historic structures. While this research is specifically tailored to examine the applicability of using pozzolans in mortars for repair of historic structures (especially those near water or in areas of high humidity), its findings are also pertinent in a wider context to the concrete and construction industries, in particular with regards to the burgeoning field of 'green' or environmentally friendly materials. This thesis concludes that it is possible to formulate repair mortars using volcanic pozzolans and lime that exhibit qualities that make them suitable for a wide range of historic repair scenarios.
Tunneling Characteristics of an Electron-Hole Trilayer under an In-plane Magnetic Field
Creators: name: Lin, Y.
name: Mendez, E. E.
name: Abanov, A. G.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have studied the tunneling properties of GaSb/AlSb/InAs/AlSb/GaSb heterostructures, in which electrons and holes accumulate in the InAs and GaSb regions respectively, under a magnetic field parallel to the interfaces. The low-temperature (T = 4.2K), zero-bias magnetoconductance has shown a behavior with field that evidences the two-dimensional character of both electrons and holes and that has allowed us to determine the hole density and the electron-hole separation. The observed field dependence of the current-voltage characteristics is explained by the relative change in parallel momentum of electrons and holes induced by the field.
description: Four pages and four eps figures; submitted to Physical Review B
On the Estimates to Measure Hawking Effect and Unruh Effect in the Laboratory
Creators: name: Rosu, H. C.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: A comparison between the proposals made to measure Hawking-like effects and the Unruh effect in the laboratory is given at the level of their estimates. No satisfactory scheme exists as yet for their detection.
description: 5 pages in latex, no figures, some references updated
Localized Linear Regression in Networked Data
Creators: name: Jung, Alexander
name: Tran, Nguyen
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The network Lasso (nLasso) has been proposed recently as an efficient learning algorithm for massive networked data sets (big data over networks). It extends the well-known least absolute shrinkage and selection operator (Lasso) from learning sparse (generalized) linear models to network models. Efficient implementations of the nLasso have been obtained using convex optimization methods lending to scalable message passing protocols. In this paper, we analyze the statistical properties of nLasso when applied to localized linear regression problems involving networked data. Our main result is a sufficient condition on the network structure and available label information such that nLasso accurately learns a localized linear regression model from a few labeled data points. We also provide an implementation of nLasso for localized linear regression by specializing a primaldual method for solving the convex (non-smooth) nLasso problem.
Network Structures, Concurrency, and Interpretability: Lessons from the Development of an AI Enabled Graph Database System
Creators: Cooper, Hal James
Publisher: name: Columbia University
Year: 2020
Subjects: Computer science
Operations research
Graph databases
Artificial intelligence
Graph theory--Data processing

description: This thesis describes the development of the SmartGraph, an AI enabled graph database. The need for such a system has been independently recognized in the isolated fields of graph databases, graph computing, and computational graph deep learning systems, such as TensorFlow. Though prior works have investigated some relationships between these fields, we believe that the SmartGraph is the first system designed from conception to incorporate the most significant and useful characteristics of each. Examples include the ability to store graph structured data, run analytics natively on this data, and run gradient descent algorithms. It is the synergistic aspects of combining these fields that provide the most novel results presented in this dissertation. Key among them is how the notion of “graph querying” as used in graph databases can be used to solve a problem that has plagued deep learning systems since their inception; rather than attempting to embed graph structured datasets into restrictive vector spaces, we instead allow the deep learning functionality of the system to natively perform graph querying in memory during optimization as a way of interpreting (and learning) the graph. This results in a concept of natural and interpretable processing of graph structured data. Graph computing systems have traditionally used distributed computing across multiple compute nodes (e.g. separate machines connected via Ethernet or internet) to deal with large-scale datasets whilst working sequentially on problems over entire datasets. In this dissertation, we outline a distributed graph computing methodology that facilitates all the above capabilities (even in an environment consisting of a single physical machine) while allowing for a workflow more typical of a graph database than a graph computing system; massive concurrent access allowing for arbitrarily asynchronous execution of queries and analytics across the entire system. Further, we demonstrate how this methodology is key to the artificial intelligence capabilities of the system.
Network and Algebraic Topology of Influenza Evolution
Creators: Chan, Joseph
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Virology
subject: Evolution (Biology)

description: Evolution is a force that has molded human existence since its divergence from chimpanzees about 5.4 million years ago. In that same amount of time, an influenza virus, which replicates every six hours, would have undergone an equivalent number of generations over only a hundred years. The fast replication times of influenza, coupled with its high mutation rate, make the virus a perfect model to study real-time evolution at a mega-Darwin scale, more than a million times faster than human evolution. While recent developments in high-throughput sequencing provide an optimal opportunity to dissect their genetic evolution, a concurrent growth in computational tools is necessary to analyze the large influx of complex genomic data. In my thesis, I present novel computational methods to examine different aspects of influenza evolution. I first focus on seasonal influenza, particularly the problems that hamper public health initiatives to combat the virus. I introduce two new approaches: 1. The q2-coefficient, a method of quantifying pathogen surveillance, and 2. FluGraph, a technique that employs network topology to track the spread of seasonal influenza around the world. The second chapter of my thesis examines how mutations and reassortment combine to alter the course of influenza evolution towards pandemic formation. I highlight inherent deficiencies in the current phylogenetic paradigm for analyzing evolution and offer a novel methodology based on algebraic topology that comprehensively reconstructs both vertical and horizontal evolutionary events. I apply this method to viruses, with emphasis on influenza, but foresee broader application to cancer cells, bacteria, eukaryotes, and other taxa.
Network based analysis of genetic disease associations
Creators: Gilman, Sarah Roche
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences

description: Despite extensive efforts and many promising early findings, genome-wide association studies have explained only a small fraction of the genetic factors contributing to common human diseases. There are many theories about where this "missing heritability" might lie, but increasingly the prevailing view is that common variants, the target of GWAS, are not solely responsible for susceptibility to common diseases and a substantial portion of human disease risk will be found among rare variants. Relatively new, such variants have not been subject to purifying selection, and therefore may be particularly pertinent for neuropsychiatric disorders and other diseases with greatly reduced fecundity.  Recently, several researchers have made great progress towards uncovering the genetics behind autism and schizophrenia. By sequencing families, they have found hundreds of de novo variants occurring only in affected individuals, both large structural copy number variants and single nucleotide variants. Despite studying large cohorts there has been little recurrence among the genes implicated suggesting that many hundreds of genes may underlie these complex phenotypes. The question becomes how to tie these rare mutations together into a cohesive picture of disease risk. Biological networks represent an intuitive answer, as different mutations which converge on the same phenotype must share some underlying biological process. Network-based analysis offers three major advantages: it allows easy integration of both common and rare variants, it allows us to assign significance to collection of genes where individual genes may not be significant due to rarity, and it allows easier identification of the biological processes underlying physical consequences. This work presents the construction of a novel phenotype network and a method for the analysis of disease-associated variants. This method has been applied to de novo mutations and GWAS results associated with both autism and schizophrenia and found clusters of genes strongly connected by shared function for both diseases. The results help elucidate the real physical consequences of putative disease mutations, leading to a better understanding of the pathophysiology of the diseases.
Kac-Moody and Virasoro Characters from the Perturbative Chern-Simons Path Integral
Creators: name: Porrati, Massimo
name: Yu, Cedric
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We evaluate to one loop the functional integral that computes the partition functions of Chern-Simons theories based on compact groups, using the background field method and a covariant gauge fixing. We compare our computation with the results of other, less direct methods. We find that our method correctly computes the characters of irreducible representations of Kac-Moody algebras. To extend the computation to non-compact groups we need to perform an appropriate analytic continuation of the partition function of the compact group. Non-vacuum characters are found by inserting a Wilson loop in the functional integral. We then extend our method to Euclidean Anti-de Sitter pure gravity in three dimensions. The explicit computation unveils several interesting features and lessons. The most important among them is that the very definition of gravity in the first-order Chern-Simons formalism requires non-trivial analytic continuations of the gauge fields outside their original domains of definition.
description: 76 pages, 4 figures. V2: minor corrections, published version