cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The influences of gender, family involvement, and work-family conflict on managers’ preferences for family-oriented benefits
Creators: name: Olsen, Jane Michelle
Publisher: name: University of British Columbia
Year: 2009

description: This study examines the preferences of managers for job attributes designed to assist in balancing work and family demands. Specifically, this study investigates, within a conceptual framework relating work and extra-work domains (Rice, Near, & Hunt, 1979), whether male and female managers exhibit differences in their preferences for family-oriented work benefits and if such preferences are influenced by the levels of family involvement and work-family conflict characterizing the worker. Additionally, this study tests whether work-family conflict mediates the relationships between gender and preferences and between family involvement and preferences. Data were from the Career Development Survey of Managers and Professionals (Langton, 1995). The respondents were 264 male and female managers employed in organizations located throughout the Lower Mainland of British Columbia. Results supported the hypotheses that gender, family involvement, and work-family conflict influence managers' preferences for family-oriented benefits. However, the hypothesized gender difference was not supported when particular work- and family-related variables were used as statistical controls. The study also failed to find support for the hypotheses concerning the mediator effects of work-family conflict. Results are discussed in terms of previous research and model development in the area of work and family. Implications of this study for employees, employers, and family life educators as well as for future research are also discussed.
Impurity-driven transitions in frustrated quantum Ising ring
Creators: name: Kou, Han-Chuan
name: Zheng, Zhen-Yu
name: Li, Peng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the quantum phase transitions driven by a point impurity in a chain seamed with ring frustration. Rich phases and quantum phase transitions are uncovered and characterized by both bulk and impurity correlation functions. Nonlocality of the correlation functions are emphasized in manifesting the novel features in the system. We demonstrate that the long-range correlation function can be factorized into local and nonlocal factors in the thermodynamic limit. The gapless topological extended-kink (TEK) phase is disclosed to exhibit long-range correlation but without long-range order, because its ground state is nondegenerate and thus immune to spontaneous symmetry breaking. This conclusion is also true in the classical impurity limit, which is significantly different from that for the open boundary chain without ring frustration. However, spontaneous symmetry breaking does occur in the gapped kink zero mode (KZM) phase and leads to the antiferromagnetic zero mode (AFZM), in which antiferromagnetic order develops in the bulk while entangled states persists locally around the impurity. And as a new feature of quantum phase transition induced by impurity, the transition from the TEK phase to the KZM-AFZM phase is reflected by a steplike nonlocal factor of the correlation function.
description: 14 pages, 10 figures
MODIFIED PAMAM DENDRIMERS IN TUNABLE DRUG-DELIVERY SYSTEMS: A SUSTAINED-RELEASE DENDRIMER HYDROGEL FOR ANTI-GLAUCOMA DRUGS AND SURFACE-ENGINEERED MACROPHAGES AS NANOPARTICLE CARRIERS FOR TARGETED ANTI-CANCER THERAPY
Creators: name: Holden, Christopher
Publisher: name: VCU Libraries
Year: 2017

description: VCU Theses and Dissertations
Hilbert's 16th Problem for Quadratic Systems. New Methods Based on a Transformation to the Lienard Equation
Creators: name: Leonov, G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Fractionally-quadratic transformations which reduce any two-dimensional quadratic system to the special Lienard equation are introduced. Existence criteria of cycles are obtained.
Blind Monaural Source Separation on Heart and Lung Sounds Based on Periodic-Coded Deep Autoencoder
Creators: name: Tsai, Kun-Hsi
name: Wang, Wei-Chien
name: Cheng, Chui-Hsuan
name: Tsai, Chan-Yen
name: Wang, Jou-Kou
name: Lin, Tzu-Hao
name: Fang, Shih-Hau
name: Chen, Li-Chin
name: Tsao, Yu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Auscultation is the most efficient way to diagnose cardiovascular and respiratory diseases. To reach accurate diagnoses, a device must be able to recognize heart and lung sounds from various clinical situations. However, the recorded chest sounds are mixed by heart and lung sounds. Thus, effectively separating these two sounds is critical in the pre-processing stage. Recent advances in machine learning have progressed on monaural source separations, but most of the well-known techniques require paired mixed sounds and individual pure sounds for model training. As the preparation of pure heart and lung sounds is difficult, special designs must be considered to derive effective heart and lung sound separation techniques. In this study, we proposed a novel periodicity-coded deep auto-encoder (PC-DAE) approach to separate mixed heart-lung sounds in an unsupervised manner via the assumption of different periodicities between heart rate and respiration rate. The PC-DAE benefits from deep-learning-based models by extracting representative features and considers the periodicity of heart and lung sounds to carry out the separation. We evaluated PC-DAE on two datasets. The first one includes sounds from the Student Auscultation Manikin (SAM), and the second is prepared by recording chest sounds in real-world conditions. Experimental results indicate that PC-DAE outperforms several well-known separations works in terms of standardized evaluation metrics. Moreover, waveforms and spectrograms demonstrate the effectiveness of PC-DAE compared to existing approaches. It is also confirmed that by using the proposed PC-DAE as a pre-processing stage, the heart sound recognition accuracies can be notably boosted. The experimental results confirmed the effectiveness of PC-DAE and its potential to be used in clinical applications.
description: 13 pages, 11 figures, Accepted by IEEE Journal of Biomedical and Health Informatics
Neutrino Pair Emission from Excited Atoms
Creators: name: Yoshimura, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We explore a possibility of measuring the magnitude and the Majorana nature of neutrino masses, by using a novel process of neutrino pair emission from excited atoms. Except lepton number non-conserving processes, the neutrino pair ($ν\barν$) emission is the unique process to distinguish the Majorana neutrino from the Dirac neutrino. The small energy difference between atomic levels makes it easier to measure small neutrino masses as indicated by neutrino oscillation experiments. The crucial point is how to enhance the rate of pair emission without enhancing the radiative decay. We have in mind two particular cases; (1) laser irradiated pair emission from metastable atoms, and (2) microwave irradiated emission from circular Rydberg states. A new mechanism of the parametric amplification to enhance the neutrino pair emission is pointed out when Rydberg atoms are irradiated by microwave, while the radiative process may be inhibited by the cavity QED effect. A great variety of measurable neutrino parameters and a variety of experimental methods are conceivable.
description: 56 pages, 1 figure added showing the rate. 2 notes added in the end. Several typos are corected from the previous version
The role of the Blood Bank in patient blood management: transfusion triggers shine in 10-year blood utilization data
Creators: name: Arpad Szallasi
name: Jha, Ruchi
Publisher: name: F1000Research
Year: 2015

description: Based on retrospective analysis of our blood utilization data from 2004 to date, we conclude that strict transfusion triggers are an effective means to reduce the number of unnecessary transfusions in a community hospital setting.
Dynamical functional renormalization group computation of order parameters and critical temperatures in the two-dimensional Hubbard model
Creators: name: Vilardi, Demetrio
name: Bonetti, Pietro M.
name: Metzner, Walter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze the interplay of antiferromagnetism and pairing in the two dimensional Hubbard model with a moderate repulsive interaction. Coupled charge, magnetic and pairing fluctuations above the energy scale of spontaneous symmetry breaking are treated by a functional renormalization group flow, while the formation of gaps and order below that scale is treated in mean-field theory. The full frequency dependences of interaction vertices and gap functions is taken into account. We compute the magnetic and pairing gap functions as a function of doping $p$ and compare with results from a static approximation. In spite of strong frequency dependences of the effective interactions and of the pairing gap, important physical results from previous static functional renormalization group calculations are confirmed. In particular, there is a sizable doping regime with robust pairing coexisting with Néel or incommensurate antiferromagnetism. The critical temperature for magnetic order is interpreted as pseudogap crossover temperature. Computing the Kosterlitz-Thouless temperature from the superfluid phase stiffness, we obtain a superconducting dome in the $(p,T)$ phase diagram centered around 15 percent hole doping.
First-time-in-human phase 1 clinical trial in healthy volunteers with SNF472, a novel inhibitor of vascular calcification
Creators: name: Perelló, Joan
name: Salcedo, Carolina
name: Joubert, Pieter H.
name: Canals, Ana Z.
name: Ferrer, Miguel D.
Publisher: name: F1000Research
Year: 2015

description: Introduction: SNF472, an intravenous formulation of phytate, is being developed for the prevention of vascular calcification in patients with end-stage renal failure on hemodialysis. It acts by preventing the formation and growth of hydroxyapatite crystals. Extensive non-clinical investigations have shown adequate evidence of efficacy and safety to warrant a first study in humans.

Methods: A double-blind, randomized, single ascending dose study was performed in two cohorts of eight healthy male volunteers. Single ascending doses of 0.5, 5, 9 and 12 mg/kg of SNF 472 were administered by a four hour infusion in a leap-frog design. Apart from standard safety parameters and pharmacokinetics, a potential biomarker of calcification that assesses the potential for the formation of hydroxyapatite crystals ex vivo, by artificially increasing the calcium phosphorus product of blood samples from the subjects ex vivo, was used to assess pharmacodynamics.

Results: The only adverse event of note was mild dose dependent local venous irritation. This is not anticipated to be an issue in the target population as SNF472 will be administered into the tubing delivering blood to the dialysis column. At a dose of 0.5 mg/kg SNF472 plasma concentrations were below the limit of detection. At the 5, 9 and 12 mg/kg doses, mean maximum plasma concentrations above the anticipated EC50 (5µM) were achieved. With the 12 mg/kg dose concentrations were 10-fold more than the EC50. In terms of the biomarker, the doses of 5, 9 and 12 mg/kg were on a plateau and reduced hydroxyapatite crystal formation by 80%.

Conclusions: The findings support continuation of the development program, the next steps being a single dose and multiple dose studies in hemodialysis patients.
SNF472 inhibits the progression of vitamin D induced cardiovascular calcification in rats
Creators: name: Perelló, Joan
name: Salcedo, Carolina
name: Ketteler, Markus
name: Tur, Fernando
name: Bernat Isern
name: Joubert, Pieter H.
name: Ferrer, Miguel D.
Publisher: name: F1000Research
Year: 2015

description: Introduction and aims: Cardiovascular calcification (VC) has been shown to be an independent predictor of cardiovascular events in CKD patients. We investigated the effects of subcutaneous SNF472, a formulation of phytate, on vitamin D induced VC progression, after setting up a new model for the rapid induction of VC with subcutaneous (s.c.) vitamin D3 in rats.

Methods: Ninety male Sprague Dawley rats were used in this study. Of these 48 were used to evaluate the dose-response of vitamin D in producing VC. Calcification was induced through daily (day 1 to day 3) s.c. administration of 3, 10, 30, 100 or 300 kIU/kg of vitamin D3. A subset of 3 animals from each group was sacrificed and evaluated on days 3, 4 and 5. The remaining 42 animals were administered 100 kIU/kg vitamin D and divided into 5 groups, each group receiving daily s.c. vehicle or SNF472 for up to 5 days. One group received daily vehicle and 3 animals were sacrificed every day to evaluate VC progression up to day 5. Four more groups were dosed with SNF472 at 100 mg/kg, starting on day 1, 2, 3 or 4.

Results: VC was induced in rats when vitamin D3 was administered at doses above 30 kIU/kg. The time course of calcification was similar in aorta and heart, where calcification became evident during the fourth day of study and continued increasing by day 5. There was a relationship between dose-regimen and the response relationship to SNF472. The group that received 4 doses showed a reduction of aorta calcification progression of 95%. The group that received a single dose on day 4 showed a reduction of calcification progression of 51%. The groups in between had intermediate effects. Therefore, SNF472 had a significant effect even when administered on the last days of progression.

Conclusions: These results suggest a potential for the possible use of SNF472 in the treatment of VC in ESRD patients.
Additional file 2 of Collaborative medication management for older adults after hospital discharge: a qualitative descriptive study
Creators: name: Pereira, Filipa
name: Bieri, Marion
name: del Rio Carral, Maria
name: Martins, Maria Manuela
name: Verloo, Henk
Publisher: name: figshare
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Supplementary Material 2
Additional file 3 of Collaborative medication management for older adults after hospital discharge: a qualitative descriptive study
Creators: name: Pereira, Filipa
name: Bieri, Marion
name: del Rio Carral, Maria
name: Martins, Maria Manuela
name: Verloo, Henk
Publisher: name: figshare
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Supplementary Material 3
The generally covariant meaning of space distances
Creators: name: Capozziello, Salvatore
name: Chiappini, Alice
name: Fatibene, Lorenzo
name: Orizzonte, Andrea
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a covariant and geometric framework to introduce space distances as they are used by astronomers. In particular, we extend the definition of space distances from the one used between events to non-test-bodies with horizons and singularities so that the definition extends through the horizons and it matches the protocol used to measure them. The definition we propose can be used in standard General Relativity although it extends directly to Weyl geometries to encompass a number of modified theories, extended theories in particular.
description: 12 pages, 4 figures
Atom-light hybrid quantum gyroscope
Creators: name: Wu, Yuan
name: Guo, Jinxian
name: Feng, Xiaotian
name: Chen, L. Q.
name: Yuan, Chun-Hua
name: Zhang, Weiping
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A new type of atom-light hybrid quantum gyroscope (ALHQG) is proposed due to its high rotation sensitivity. It consists of an optical Sagnac loop to couple rotation rate and an atomic ensemble as quantum beam splitter/recombiner (QBS/C) based on atomic Raman amplification process to realize the splitting and recombination of the optical wave and the atomic spin wave. The rotation sensitivity can be enhanced by the quantum correlation between Sagnac loop and QBS/C. The optimal working condition is investigated to achieve the best sensitivity. The numerical results show that the rotation sensitivity can beat the standard quantum limit (SQL) in ideal condition. Even in the presence of the attenuation under practical condition, the best sensitivity of the ALHQG can still beat the SQL and is better than that of a fiber optic gyroscope (FOG). Such an ALHQG could be practically applied for modern inertial navigation system.
description: 5 figures
X-Ray and Optical Microlensing in the Lensed Quasar PG 1115+080
Creators: name: Morgan, Christopher W.
name: Kochanek, Christopher S.
name: Dai, Xinyu
name: Morgan, Nicholas D.
name: Falco, Emilio E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyzed the microlensing of the X-ray and optical emission of the lensed quasar PG 1115+080. We find that the effective radius of the X-ray emission is 1.3(+1.1 -0.5) dex smaller than that of the optical emission. Viewed as a thin disk observed at inclination angle i, the optical accretion disk has a scale length, defined by the point where the disk temperature matches the rest frame energy of the monitoring band (kT=hc/lambda_rest with lambda_rest=0.3 micron), of log[(r_{s,opt}/cm)(cos(i) / 0.5)^{1/2}] = 16.6 \pm 0.4. The X-ray emission region (1.4-21.8 keV in the rest frame) has an effective half-light radius of log[r_{1/2,X}/cm] = 15.6 (+0.6-0.9}. Given an estimated black hole mass of 1.2 * 10^9 M_sun, corresponding to a gravitational radius of log[r_g/cm] = 14.3, the X-ray emission is generated near the inner edge of the disk while the optical emission comes from scales slightly larger than those expected for an Eddington-limited thin disk. We find a weak trend supporting models with low stellar mass fractions near the lensed images, in mild contradiction to inferences from the stellar velocity dispersion and the time delays.
description: 21 pages, 5 figures, submitted to ApJ; corrected errors with the measurement of the A1/A2 flux ratio
Learning Inter-Modal Correspondence and Phenotypes from Multi-Modal Electronic Health Records
Creators: name: Yin, Kejing
name: Cheung, William K.
name: Fung, Benjamin C. M.
name: Poon, Jonathan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Non-negative tensor factorization has been shown a practical solution to automatically discover phenotypes from the electronic health records (EHR) with minimal human supervision. Such methods generally require an input tensor describing the inter-modal interactions to be pre-established; however, the correspondence between different modalities (e.g., correspondence between medications and diagnoses) can often be missing in practice. Although heuristic methods can be applied to estimate them, they inevitably introduce errors, and leads to sub-optimal phenotype quality. This is particularly important for patients with complex health conditions (e.g., in critical care) as multiple diagnoses and medications are simultaneously present in the records. To alleviate this problem and discover phenotypes from EHR with unobserved inter-modal correspondence, we propose the collective hidden interaction tensor factorization (cHITF) to infer the correspondence between multiple modalities jointly with the phenotype discovery. We assume that the observed matrix for each modality is marginalization of the unobserved inter-modal correspondence, which are reconstructed by maximizing the likelihood of the observed matrices. Extensive experiments conducted on the real-world MIMIC-III dataset demonstrate that cHITF effectively infers clinically meaningful inter-modal correspondence, discovers phenotypes that are more clinically relevant and diverse, and achieves better predictive performance compared with a number of state-of-the-art computational phenotyping models.
description: Accepted by IEEE Transactions on Knowledge and Data Engineering (TKDE)
Additional file 4 of Collaborative medication management for older adults after hospital discharge: a qualitative descriptive study
Creators: name: Pereira, Filipa
name: Bieri, Marion
name: del Rio Carral, Maria
name: Martins, Maria Manuela
name: Verloo, Henk
Publisher: name: figshare
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Supplementary Material 4
Molecular analysis of defective interfering RNAs associated with cucumber necrosis virus infections
Creators: name: Finnen, Renée Louise
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis, the molecular biology of defective interfering (DI) RNAs associated with cucumber necrosis virus (CNV), a simple, well characterized plant RNA virus, was examined to gain insight into CNV RNA replication. Seven different cDNA clones of DI RNAs associated with either a laboratory strain of CNV or nucleic acid extracts from serially-passaged CNV infections (de now-generated DI RNAs) were constructed using reverse transcription followed by the polymerase chain reaction (RT-PCR). The sequence of each clone was determined and RNA transcripts generated by T7 RNA polymerase were assessed for biological activity by coinfecting with CNV. This analysis demonstrated that three or four large sequence blocks of the CNV genome are retained in CNV DI RNAs. These sequence blocks therefore likely represent essential c/s-acting elements involved in viral RNA replication. The presence of DI RNAs in CNV infected plants interfered with the development of the severe necrosis typical of CNV infections. Total nucleic acid extracts from coinfections were also found to contain RNAs which were twice the size of the DI RNA used in the coinfection. Using RT-PCR analyses and direct sequencing of RNA templates, these RNAs were established to be linear, head-to-tail repeats of DI RNA sequence, the first described in association with tombusvirus DI RNAs. Further characterization revealed that DI RNA dimers are likely generated from monomers by RNA recombination. Individual DI RNAs were found to vary in the amount of dimer which they accumulate during coinfection. Dimer accumulation was examined by coinfecting a series of chimeric and mutated DI RNAs constructed from a DI RNA which accumulated primarily as monomer and one which accumulated primarily as dimer. These analyses identified two distinct tracts of sequence in the 3' terminal region which correlate with increased dimer accumulation. The results of these investigations are discussed in terms of the insights they provide into CNV replication and recombination. A model for the generation of DI RNA dimers is also proposed.
High-order harmonic generation in graphene: nonlinear coupling of intra and interband transitions
Creators: name: Sato, Shunsuke A.
name: Hirori, Hideki
name: Sanari, Yasuyuki
name: Kanemitsu, Yoshihiko
name: Rubio, Angel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate high-order harmonic generation (HHG) in graphene with a quantum master equation approach. The simulations reproduce the observed enhancement in HHG in graphene under elliptically polarized light [N. Yoshikawa et al, Science 356, 736 (2017)]. On the basis of a microscopic decomposition of the emitted high-order harmonics, we find that the enhancement in HHG originates from an intricate nonlinear coupling between the intraband and interband transitions that are respectively induced by perpendicular electric field components of the elliptically polarized light. Furthermore, we reveal that contributions from different excitation channels destructively interfere with each other. This finding suggests a path to potentially enhance the HHG by blocking a part of the channels and canceling the destructive interference through band-gap or chemical potential manipulation.
Tensor gauge fields in arbitrary representations of GL(D,R): II. Quadratic actions
Creators: name: Bekaert, Xavier
name: Boulanger, Nicolas
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Quadratic, second-order, non-local actions for tensor gauge fields transforming in arbitrary irreducible representations of the general linear group in D-dimensional Minkowski space are explicitly written in a compact form by making use of Levi-Civita tensors. The field equations derived from these actions ensure the propagation of the correct massless physical degrees of freedom and are shown to be equivalent to non-Lagrangian local field equations proposed previously. Moreover, these actions allow a frame-like reformulation a la MacDowell-Mansouri, without any trace constraint in the tangent indices.
description: LaTeX, 53 pages, no figure. Accepted for publication in Communications in Mathematical Physics. Local Fierz-Pauli programme achieved by completing the analysis of Labastida
Dynamical preparation of a steady ODLRO state in the Hubbard model with local non-Hermitian impurity
Creators: name: Zhang, X. Z.
name: Song, Z.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The cooperation between non-Hermiticity and interaction brings about a lot of counterintuitive behaviors, which are impossible to exist in the framework of the Hermitian system. We study the effect of a non-Hermitian impurity on the Hubbard model in the context of $η$ symmetry. We show that the non-Hermitian Hubbard Hamiltonian can respect a full real spectrum even if a local non-Hermitian impurity is applied to. The balance between dissipation of single fermion and on-site pair fluctuation results in a highest-order coalescing state with off-diagonal long-range order (ODLRO). Based on the characteristic of High-order EP, the critical non-Hermitian Hubbard model allows the generation of such a steady superconducting-like state through the time evolution from an arbitrary initial state, including the vacuum state. Remarkably, this dynamic scheme is insensitive to the on-site interaction and entirely independent of the locations of particle dissipation and pair fluctuation. Our results lay the groundwork for the dynamical generation of a steady ODLRO state through the critical non-Hermitian strongly correlated system.
description: 8 pages, 2 figures
On a family of gradient type projection methods for nonlinear ill-posed problems
Creators: name: Leitao, A.
name: Svaiter, B. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65J20, 47J06

description: We propose and analyze a family of successive projection methods whose step direction is the same as Landweber method for solving nonlinear ill-posed problems that satisfy the Tangential Cone Condition (TCC). This family enconpasses Landweber method, the minimal error method, and the steepest descent method; thush providing an unified framework for the analysis of these methods. Moreover, we define in this family new methods which are convergent for the constant of the TCC in a range twice as large as the one required for the Landweber and other gradient type methods. The TCC is widely used in the analysis of iterative methods for solving nonlinear ill-posed problems. The key idea in this work is to use the TCC in order to construct special convex sets possessing a separation property, and to succesively project onto these sets. Numerical experiments are presented for a nonlinear 2D elliptic parameter identification problem, validating the efficiency of our method.
description: 29 pages, 6 figures
Decoherence Control in Open Quantum System via Classical Feedback
Creators: name: Ganesan, Narayan
name: Tarn, Tzyh Jong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we propose a novel strategy using techniques from systems theory to completely eliminate decoherence and also provide conditions under which it can be done so. A novel construction employing an auxiliary system, the bait, which is instrumental to decoupling the system from the environment is presented. Our approach to decoherence control in contrast to other approaches in the literature involves the bilinear input affine model of quantum control system which lends itself to various techniques from classical control theory, but with non-trivial modifications to the quantum regime. The elegance of this approach yields interesting results on open loop decouplability and Decoherence Free Subspaces(DFS). Additionally, the feedback control of decoherence may be related to disturbance decoupling for classical input affine systems, which entails careful application of the methods by avoiding all the quantum mechanical pitfalls. In the process of calculating a suitable feedback the system has to be restructured due to its tensorial nature of interaction with the environment, which is unique to quantum systems. The results are qualitatively different and superior to the ones obtained via master equations. Finally, a methodology to synthesize feedback parameters itself is given, that technology permitting, could be implemented for practical 2-qubit systems to perform decoherence free Quantum Computing.
description: 17 pages, 4 Figs
Analysis of Feature Representations for Anomalous Sound Detection
Creators: name: Müller, Robert
name: Illium, Steffen
name: Ritz, Fabian
name: Schmid, Kyrill
Publisher: name: arXiv
Year: 2020
Subjects: subject: Sound (cs.SD)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this work, we thoroughly evaluate the efficacy of pretrained neural networks as feature extractors for anomalous sound detection. In doing so, we leverage the knowledge that is contained in these neural networks to extract semantically rich features (representations) that serve as input to a Gaussian Mixture Model which is used as a density estimator to model normality. We compare feature extractors that were trained on data from various domains, namely: images, environmental sounds and music. Our approach is evaluated on recordings from factory machinery such as valves, pumps, sliders and fans. All of the evaluated representations outperform the autoencoder baseline with music based representations yielding the best performance in most cases. These results challenge the common assumption that closely matching the domain of the feature extractor and the downstream task results in better downstream task performance.
description: ICAART 2021, 10 pages, 7 figures, 2 tables
Additional file 1 of Effects of mosquito resting site temperatures on the estimation of pathogen development rates in near-natural habitats in Germany
Creators: name: Sauer, Felix Gregor
name: Kiel, Ellen
name: Lühken, Renke
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 1: Table S1. Results of the multiple linear regressions to predict the resting site temperatures in the two habitats meadows and forest for both study periods. Table S2. Mean number (with 95% confidence interval) of specimens per species collected per resting site type and height level. Total number resting site sampling events: 5043 (3213 in artificial resting sites and 1830 in natural resting sites).
Renormalization algorithm with graph enhancement
Creators: name: Hübener, R.
name: Kruszynska, C.
name: Hartmann, L.
name: Dür, W.
name: Verstraete, F.
name: Eisert, J.
name: Plenio, M. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We introduce a class of variational states to describe quantum many-body systems. This class generalizes matrix product states which underly the density-matrix renormalization group approach by combining them with weighted graph states. States within this class may (i) possess arbitrarily long-ranged two-point correlations, (ii) exhibit an arbitrary degree of block entanglement entropy up to a volume law, (iii) may be taken translationally invariant, while at the same time (iv) local properties and two-point correlations can be computed efficiently. This new variational class of states can be thought of as being prepared from matrix product states, followed by commuting unitaries on arbitrary constituents, hence truly generalizing both matrix product and weighted graph states. We use this class of states to formulate a renormalization algorithm with graph enhancement (RAGE) and present numerical examples demonstrating that improvements over density-matrix renormalization group simulations can be achieved in the simulation of ground states and quantum algorithms. Further generalizations, e.g., to higher spatial dimensions, are outlined.
description: 4 pages, 1 figure
Solar System Tests in Brans-Dicke and Palatini f(R)-theories
Creators: name: Bonino, Alice
name: Camera, Stefano
name: Fatibene, Lorenzo
name: Orizzonte, Andrea
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compare Mercury's precession test in standard General Relativity (GR), Brans-Dicke theories (BD), and Palatini f(R)-theories. We avoid post Newtonian (PN) approximation and compute exact precession in these theories. We show that the well-known mathematical equivalence between Palatini f(R)-theories and a specific subset of BD theories does not extend to a really physical equivalence among theories since equivalent models still allow different incompatible precession for Mercury depending on the solution one chooses. As a result one cannot use BD equivalence to rule out Palatini f(R)-theories. On the contrary, we directly discuss that Palatini f(R)-theories can (and specific models do) easily pass Solar System tests as Mercury's precession.
description: 22 pages, 2 figures
Data Science for Engineers: A Teaching Ecosystem
Creators: name: Tobar, Felipe
name: Bravo-Marquez, Felipe
name: Dunstan, Jocelyn
name: Fontbona, Joaquin
name: Maass, Alejandro
name: Remenik, Daniel
name: Silva, Jorge F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Physics Education (physics.ed-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We describe an ecosystem for teaching data science (DS) to engineers which blends theory, methods, and applications, developed at the Faculty of Physical and Mathematical Sciences, Universidad de Chile, over the last three years. This initiative has been motivated by the increasing demand for DS qualifications both from academic and professional environments. The ecosystem is distributed in a collaborative fashion across three departments in the above Faculty and includes postgraduate programmes, courses, professional diplomas, data repositories, laboratories, trainee programmes, and internships. By sharing our teaching principles and the innovative components of our approach to teaching DS, we hope our experience can be useful to those developing their own DS programmes and ecosystems. The open challenges and future plans for our ecosystem are also discussed at the end of the article.
description: Accepted at IEEE Signal Processing Magazine (Special Issue on Innovation Starts with Education)
Les contes de Mlle de Lubert : les textualités du ludique
Creators: name: Duggan, Maryse
Publisher: name: University of British Columbia
Year: 2009

description: The fairy tales of Mile de Lubert (1710-1779) are all but forgotten today even though they stand out as unusual in the vast production of the eighteenth century. This research, based on Gerard Genette's theory of "transtextualite" presents, as a minor literary case, a phase in the evolution of the genre, in which the concept of fairy tale has been revisited and often pushed to extreme. Chapter one studies the aspect of paratext and essentially of definition by title. Due to their repetitive scheme, titles function as contracts of reading. According to a structural approach which takes into account the concept of typology, the titles outline two categories of fairy tales, one being traditional, the other totally outside the norm. Chapter two considers the remaining aspects of paratextuality, namely the information on author and conditions of publishing, and the liminary texts. The prevalent censorship encourages the mention of phony places of publishing; author and dedicator remain broadly anonymous; prefaces are places to fight preconceived ideas about fairy tales and to offer a complete theory of the genre with a unique motto: pure entertainment. In chapter three, the intertext considers the literary and esoteric realms, including Greco-Roman mythology and Cabal. The major intertextual field remains the folktale with a predilection for motives such as metamorphosis and monstrosity among masculine and feminine characters. Chapter four takes into account the principle of hyper/hypotextuality. The texts with an obvious hypotext are mainly imitations but transformation can become usurpation. Some tales present the characteristics of parody without being given as such. These converging textualities surround Mile de Lubert's practice in literary fairy tales and settle the corpus as an outburst in the pleasure field.
Lambda-N scattering length from the reaction gamma d -> K^+ Lambda n
Creators: name: Gasparyan, A.
name: Haidenbauer, J.
name: Hanhart, C.
name: Miyagawa, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The perspects of utilizing the strangeness-production reaction gamma d -> K^+ Lambda n for the determination of the Lambda n low-energy scattering parameters are investigated. The spin observables that need to be measured in order to isolate the Lambda n singlet (1S0) and triplet (3S1) states are identified. Possible kinematical regions where the extraction of the Lambda n scattering lengths might be feasible are discussed.
description: 8 pages, 4 figures
Novae, supernovae, or something else? -- (Super-)nova highlights from Hoffmann & Vogt are quite certainly comets (AD 668 and 891)
Creators: name: Neuhaeuser, Ralph
name: Neuhaeuser, Dagmar L.
name: Chapman, Jesse
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Galactic novae and supernovae can be studied by utilizing historical observations, yielding explosion time, location on sky~etc. Recent publications by Hoffmann & Vogt present CVs, supernova remnants, planetary nebulae etc. as potential counterparts based on their list of historically reported transients from the Classical Chinese text corpus. Since their candidate selection neglects the state-of-the-art (e.g. Stephenson \& Green), and since it includes `broom stars' and `fuzzy stars', i.e. probable comets, we investigate their catalogue in more detail. We discuss here their two highlights, the suggestion of two `broom star' records dated AD 667 and 668 as one historical supernova and of the `guest star' of AD 891 as recurrent nova U Sco. The proposed positional search areas are not justified due to translation and dating problems, source omission, as well as misunderstandings of historical Chinese astronomy and unfounded textual interpretations. All sources together provide strong evidence for comet sightings in both AD 668 and 891 -- e.g., there are no arguments for stationarity. The AD 667 record is a misdated doublet of 668. Our critique pertains more generally to their whole catalogue of `24 most promising events': their speculations on counterparts lack a solid foundation and should not be used in follow-ups.
Magnetic Effects of Plasma Pressure Gradients in the Upper F Region
Creators: name: Laundal, K. M.
name: Hatch, S. M.
name: Moretto, T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The Swarm satellites fly at altitudes that at polar latitudes are generally assumed to onlycontain currents that are aligned with the local magnetic field. Therefore, disturbances along the main field direction are mainly signatures of auroral electrojet currents, with a relatively smooth structure due to the distance from the currents. Here we show that superimposed on this smooth signal is an irregular pattern of small perturbations, which are anticorrelated with the plasma density measured by the Langmuir probe. We show that the perturbations can be remarkably well reproduced by assuming they represent a j x B force, which balances the plasma pressure gradient implied by the density variations. The associated diamagnetic current, previously reported to be most important near the equator, appears to be a ubiquitous phenomenon also at polar latitudes. A spectral analysis indicates that this effect dominates magnetic field intensity variations at small-scale sizes of a few tens of kilometers.
Effect of Gameplay Uncertainty, Display Type, and Age on Virtual Reality Exergames
Creators: name: Xu, Wenge
name: Liang, Hai-Ning
name: Yu, Kangyou
name: Baghaei, Nilufar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Uncertainty is widely acknowledged as an engaging gameplay element but rarely used in exergames. In this research, we explore the role of uncertainty in exergames and introduce three uncertain elements (false-attacks, misses, and critical hits) to an exergame. We conducted a study under two conditions (uncertain and certain), with two display types (virtual reality and large display) and across young and middle-aged adults to measure their effect on game performance, experience, and exertion. Results show that (1) our designed uncertain elements are instrumental in increasing exertion levels; (2) when playing a motion-based first-person perspective exergame, virtual reality can improve performance, while maintaining the same motion sickness level as a large display; and (3) exergames for middle-aged adults should be designed with age-related declines in mind, similar to designing for elderly adults. We also framed two design guidelines for exergames that have similar features to the game used in this research.
description: Accepted to ACM 2021 CHI Conference on Human Factors in Computing Systems (CHI 2021)
Asymptotic properties of the development of conformally flat data near spatial infinity
Creators: name: Kroon, J. A. Valiente
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Certain aspects of the behaviour of the gravitational field near null and spatial infinity for the developments of asymptotically Euclidean, conformally flat initial data sets are analysed. Ideas and results from two different approaches are combined: on the one hand the null infinity formalism related to the asymptotic characteristic initial value problem and on the other the regular Cauchy initial value problem at spatial infinity which uses Friedrich's representation of spatial infinity as a cylinder. The decay of the Weyl tensor for the developments of the class of initial data under consideration is analysed under some existence and regularity assumptions for the asymptotic expansions obtained using the cylinder at spatial infinity. Conditions on the initial data to obtain developments satisfying the Peeling Behaviour are identified. Further, the decay of the asymptotic shear on null infinity is also examined as one approaches spatial infinity. This decay is related to the possibility of selecting the Poincaré group out of the BMS group in a canonical fashion. It is found that for the class of initial data under consideration, if the development peels, then the asymptotic shear goes to zero at spatial infinity. Expansions of the Bondi mass are also examined. Finally, the Newman-Penrose constants of the spacetime are written in terms of initial data quantities and it is shown that the constants defined at future null infinity are equal to those at past null infinity.
description: 24 pages, 1 figure
Additional file 1 of A prospective randomized study to compare standard versus intensive training strategies on long-term improvement in critical care ultrasonography proficiency
Creators: name: Suzuki, Reina
name: Kanai, Mio
name: Oya, Kazumasa
name: Harada, Yohei
name: Horie, Ryohei
name: Sekiguchi, Hiroshi
Publisher: name: figshare
Year: 2022
Subjects: subject: Cell Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1. Skill Portion of the Critical Care Ultrasonography (CCUS) Proficiency Test.
การวิเคราะห์อิทธิพลของพฤติกรรมการเป็นสมาชิกที่ดีขององค์การ : กรณีศึกษาพนักงานมหาวิทยาลัยราชภัฏ
Creators: name: ฉันธะ จันทะเสนา
Publisher: name: คณะพาณิชยศาสตร์และการบัญชี มหาวิทยาลัยธรรมศาสตร์
Year: 2015
Subjects: ความพึงพอใจในงาน, ความผูกพันต่อองค์การ, การรับรู้การสนับสนุนจากองค์การ, พฤติกรรมการเป็นสมาชิกที่ดีขององค์การ

description: 147 (ก.ค.-ก.ย. 58), 38, วารสารบริหารธุรกิจ JBA
ปัจจัยที่มีความสัมพันธ์ต่อการจัดตั้งคณะกรรมการจัดการความเสี่ยง : หลักฐานจากบริษัทจดทะเบียนในตลาดหลักทรัพย์แห่งประเทศไทย
Creators: name: วัลภา ถมยา
Publisher: name: คณะพาณิชยศาสตร์และการบัญชี มหาวิทยาลัยธรรมศาสตร์
Year: 2015
Subjects: คณะกรรมการจัดการความเสี่ยง, การกำกับดูแลกิจการ, คณะกรรมการบริษัท

description: 147 (ก.ค.-ก.ย. 58), 38, วารสารบริหารธุรกิจ JBA