cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hypothetical bias in stated choice experiments: Part II. Macro-scale analysis of literature and effectiveness of bias mitigation methods
Creators: name: Haghani, Milad
name: Bliemer, Michiel C. J.
name: Rose, John M.
name: Oppewal, Harmen
name: Lancsar, Emily
Publisher: name: arXiv
Year: 2021
Subjects: subject: Econometrics (econ.EM)
subject: FOS: Economics and business

description: This paper reviews methods of hypothetical bias (HB) mitigation in choice experiments (CEs). It presents a bibliometric analysis and summary of empirical evidence of their effectiveness. The paper follows the review of empirical evidence on the existence of HB presented in Part I of this study. While the number of CE studies has rapidly increased since 2010, the critical issue of HB has been studied in only a small fraction of CE studies. The present review includes both ex-ante and ex-post bias mitigation methods. Ex-ante bias mitigation methods include cheap talk, real talk, consequentiality scripts, solemn oath scripts, opt-out reminders, budget reminders, honesty priming, induced truth telling, indirect questioning, time to think and pivot designs. Ex-post methods include follow-up certainty calibration scales, respondent perceived consequentiality scales, and revealed-preference-assisted estimation. It is observed that the use of mitigation methods markedly varies across different sectors of applied economics. The existing empirical evidence points to their overall effectives in reducing HB, although there is some variation. The paper further discusses how each mitigation method can counter a certain subset of HB sources. Considering the prevalence of HB in CEs and the effectiveness of bias mitigation methods, it is recommended that implementation of at least one bias mitigation method (or a suitable combination where possible) becomes standard practice in conducting CEs. Mitigation method(s) suited to the particular application should be implemented to ensure that inferences and subsequent policy decisions are as much as possible free of HB.
Low Frequency Deep Brain Stimulation for Dystonia: Lower is Not Always Better
Creators: name: Velez-Lago, Frances M.
name: Oyama, Genko
name: Foote, Kelly D.
name: Hwynn, Nelson
name: Zeilman, Pamela
name: Jacobson, Charles
name: Wu, Samuel
name: Okun, Michael S.
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2012

description: Background: It has been observed that low-frequency stimulation (LFS) may be effective for dystonia, and the use of LFS may alleviate the need for frequent battery changes in a subset of patients. The aim of this study was to analyze LFS as a strategy to treat deep brain stimulation (DBS) patients with various dystonias. Methods: Subjects had to receive a minimum of 6 months of clinical follow-up at the University of Florida, and were required to have a minimum of 3 months on a LFS trial. Twenty-seven dystonia DBS patients were retrospectively analyzed from the UF-INFORM database. Results: Thirteen subjects met inclusion criteria. Of the 13 subjects, all had bilateral internal pallidum (GPi) DBS, and five (38.5%) remained with at least one side on LFS settings at their last follow up (average follow up 24 months, range 6–46 months). Within the first 6 months, six (46%) subjects remained on LFS and seven (54%) were changed to high-frequency stimulation (HFS). Those who remained on LFS settings at 6 months were characterized by shorter disease durations than those on HFS settings. There were no significant differences in dystonia severity (Unified Dystonia Rating Scale and Burke–Fahn–Marsden Dystonia Rating Scale) at baseline between the two settings. The estimated battery life for LFS (79.9±30.5) was significantly longer than for HFS settings (32.2±13.1, p<0.001) Discussion: LFS was ultimately chosen for 38.5% of all subjects. Although this study failed to yield solid predictive features, subjects on LFS tended to have shorter disease durations.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Cooperative learning activities : the study of random groupings and sociometric groupings and their impact on self-esteem
Creators: name: Lang, Esther Uldene
Publisher: name: University of British Columbia
Year: 2011

description: This study examined two polarized views of selecting students for grouping for cooperative learning activities, to see what impact each had on student self-esteem. One major question formed the basis of the study: Is there any significant difference in student self-esteem at the Grade 7 level, over a six month period of time, if the teacher were to choose group membership for cooperative learning activities randomly, as opposed to sociometrically. The subjects were 41 Grade 7 students in two classes within the same elementary school in a small town in the Interior of British Columbia. Keeping classes intact, one class was grouped sociometrically for three Social Studies units set up in Cooperative Learning format, while the other class was grouped randomly for the same three units. Subjects were given the Piers-Harris Children's Self-Concept Scale and the Coopersmith Self-Esteem Inventory at three times during the study - before any Cooperative Learning activities, at the end of the six month activities, and after two months of no Cooperative Learning activities. This measure was used to determine whether or not each group, as a whole, had a significant change in perceived self-esteem, as a result of the cooperative learning activities, and whether or not any changes in self-esteem were more significant in the sociometric grouping or in the random grouping. Tests were hand-scored, and their means, sums of squares, degrees of freedom, mean squares, F-ratios, and probabilities were calculated by entering the data into a computer and using the ANOVAR command file of the SPSS:X program to calculate the analysis of variance for repeated measures. According to the data for this particular sample, there is no significant difference in the self-esteem of the students grouped randomly or sociometrically. There was also no significant difference in self-esteem of males versus females. However, there was a significant difference over time, with the combined groups, suggesting that the cooperative learning activities could have had some impact on student self-esteem in general.
Cerebellar Pathology of a Dual Clinical Diagnosis: Patients with Essential Tremor and Dystonia
Creators: name: Ma, Karen
name: Babij, Rachel
name: Cortés, Etty
name: Vonsattel, Jean-Paul G.
name: Louis, Elan D.
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2012

description: Background: Clinical studies have implicated the cerebellum in the pathogenesis of essential tremor (ET), and recent postmortem studies have identified structural changes in the ET cerebellum. While the basal ganglia have traditionally been implicated in dystonia, cerebellar involvement has been suggested as well, and a recent study showed Purkinje cell (PC) loss. We conducted a detailed postmortem examination of the brain in four individuals with clinical diagnoses of ET and dystonia, and hypothesized that pathological changes in the cerebellum would be greater in these four ET cases than in published ET cases without dystonia. Methods: After a complete neuropathological assessment, a standard parasagittal neocerebellar tissue block was harvested in each brain. One 7-µm thick section was stained with luxol fast blue/hematoxylin and eosin, and one section with the Bielschowsky method. We quantified PCs, torpedoes, heterotopic PCs, PC dendritic swellings, and basket cell changes. Results: Two ET+dystonia cases had more microscopic changes in the cerebellum than published ET cases; the other two cases had similar changes to published ET cases. Discussion: This is the first report that uses human autopsy tissue to study patients with both ET and dystonia. The findings were heterogeneous. Additional studies, with larger samples, are needed.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Removing the Microlensing Blending-Parallax Degeneracy Using Source Variability
Creators: name: Assef, R. J.
name: Gould, A.
name: EROS-2, the
name: MACHO
name: Collaborations, OGLE
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Microlensing event MACHO 97-SMC-1 is one of the rare microlensing events for which the source is a variable star, simply because most variable stars are systematically eliminated from microlensing studies. Using observational data for this event, we show that the intrinsic variability of a microlensed star is a powerful tool to constrain the nature of the lens by breaking the degeneracy between the microlens parallax and the blended light. We also present a statistical test for discriminating the location of the lens based on the χ^2 contours of the vector Λ, the inverse of the projected velocity. We find that while SMC self lensing is somewhat favored over halo lensing, neither location can be ruled out with good confidence.
description: 15 text pages + 2 tables + 7 figures. Published in the Astrophysical Journal
Composable Learning with Sparse Kernel Representations
Creators: name: Tolstaya, Ekaterina
name: Stump, Ethan
name: Koppel, Alec
name: Ribeiro, Alejandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We present a reinforcement learning algorithm for learning sparse non-parametric controllers in a Reproducing Kernel Hilbert Space. We improve the sample complexity of this approach by imposing a structure of the state-action function through a normalized advantage function (NAF). This representation of the policy enables efficiently composing multiple learned models without additional training samples or interaction with the environment. We demonstrate the performance of this algorithm on learning obstacle-avoidance policies in multiple simulations of a robot equipped with a laser scanner while navigating in a 2D environment. We apply the composition operation to various policy combinations and test them to show that the composed policies retain the performance of their components. We also transfer the composed policy directly to a physical platform operating in an arena with obstacles in order to demonstrate a degree of generalization.
Exact solutions of the Schrodinger equation in D-dimensions for the pseudoharmonic potential plus ring-shaped potential
Creators: name: Ikhdair, Sameer M.
name: Sever, Ramazan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present analytically the exact energy bound-states solutions of the Schrodinger equation in $D$-dimensions for a pseudoharmonic potential plus ring-shaped potential of the form $V(r,θ)=D_{e}(\frac{r}{% r_{e}}-\frac{r_{e}}{r}) ^{2}+\frac{β\cos ^{2}θ}{r^{2}\sin ^{2}θ}$ by means of the conventional Nikiforov-Uvarov method. We also give a clear recipe of how to obtain an explicit solution to the radial and angular parts of the wave functions in terms of orthogonal polynomials. The total energy of the system is different from the pseudoharmonic potential because of the contribution of the angular part. The general results obtained in this work can be reduced to the standard forms given in the literature.
description: 17 pages
Συμβολή στη μελέτη της μικροβιακής χλωρίδας και ιδιαίτερα των Vibrio spp. σε ιχθυογεννητικούς σταθμούς τσιπούρας και λαβρακιού στην Ελλάδα
Creators: name: Κυρκούδης, Ιωάννης Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Λαβράκι
Τσιπούρα
Sea bass
Sea bream(Sparus aurata)
Vibrio anguillarum

description: Μελετήθηκε η μικροβιακή χλωρίδα σε νύμφες και ιχθύδια λαβρακιού(dicentrarchus labrax L.) και τσιπούρας(Sparus aurata L.), σε διαφορετικά στάδια ανάπτυξης, σε τρείς ιχθυογεννητικούς σταθμούς. Μελετήθηκε επίσης, η μικροβιακή χλωρίδα της παρεχόμενης τροφής(ζωντανής και σύνθετης). Στο κέντρο των ψαριών παρατηρήθηκαν αυξημένοι βακτηριακοί πληθυσμοί, χωρίς να παρουσιάζεται αυξημένη θνησιμότητα, εκτός από ένα ιχθυογεννητικό σταθμό, όπου παρουσιάστηκε αυξημένη θνησιμότητα, σε ιχθύδια λαβρακιού. Από τα ασθενή ιχθύδια απομονώθηκε το Vibrio anguillarum GR 1.1. Η παθογένεια του Vibrio anguillarum GR 1.1. επιβεβαιώθηκε με πειραματικές μολύνσεις. Το βακτηριακό στέλεχος προστέθηκε στο νερό εκτροφής σε δύο διαφορετικές δόσεις μόλυνσης. Το Vibrio anguillarum GR 1.1. εισήλθε στο έντερο των λαβρακιών, προκάλεσε σοβαρή εντερίτιδα με απόπτωση του εντερικού επιθηλίου και θάνατο. Τέλος, μελετήθηκε η αποτελεσματικότητα αυτεμβολίου του Vibrio angulillarum GR 1.1. σε λαβράκια, για διαφορετικές μεθόδους εμβολιασμού και δόσεις μόλυνσης. Εξήντα ημέρες από τον αρχικό εμβολιασμό τα εμβολιασμένα ψάρια και οι μάρτυρες μολύνθηκαν πειραματικά με ενδοπεριτοναϊκή έγχυση του Vbrio anguillarum GR 1.1. αποτελεσματικότερες μέθοδοι εμβολιασμού αξιολογήθηκαν ο εμβολιασμός με ένεση και ο αναμνηστικός εμβολιασμός με εμβάπτιση σε σύγκριση με τον ένα εμβολιασμό με εμβάπτιση
description: The intestinal nicroflora of sea bass(Dicentrarchus labrax L) and sea bream different marine fish hatcheries was studied. The bacterial flora of the rearing water and of supplied food(live, compound) was studied as well. Very high bacterial populations were detected in the intestine of the examined fish, without being directly related to increased mortality. However, only in one hatchery, massive mortalities occured in sea bass fingerlings. From diseases fingerlings, Vibrio anguillarum GR 1.1. was isolated. Virulence of Vibrio anguillarum GR 1.1 was confirmed in experimental infections trials. The bacterial strain was introduced into rearing water in two different doses. Vibrio anguillarum GR 1.1. reached the intestine of infected fish, caused severe enteritis with sloughing of the intestinal mucosa and death. Within seven days, mortality exceeded 90% for the high infection dose and 80% for the lower infection dose. Finally, the efficacy of an autogenous, Vibrio anguillarum GR 1.1., vaccine was evaluated for the different vaccination methods and challenge doses. Sixty days post the initial vaccination, vaccinated fish and controls were i.p. challenged with Vibrio anguillarum GR 1.1. Vaccination by injection and booster vaccination by immersion compared to a single vaccination by immersion were evaluated as the most effective vaccination methods
Entanglement quantification in atomic ensembles
Creators: name: Fadel, Matteo
name: Usui, Ayaka
name: Huber, Marcus
name: Friis, Nicolai
name: Vitagliano, Giuseppe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Entanglement measures quantify nonclassical correlations present in a quantum system, but can be extremely difficult to calculate, even more so, when information on its state is limited. Here, we consider broad families of entanglement criteria that are based on variances of arbitrary operators and analytically derive the lower bounds these criteria provide for two relevant entanglement measures: the best separable approximation (BSA) and the generalized robustness (GR). This yields a practical method for quantifying entanglement in realistic experimental situations, in particular, when only few measurements of simple observables are available. As a concrete application of this method, we quantify bipartite and multipartite entanglement in spin-squeezed Bose-Einstein condensates of $\sim 500$ atoms, by lower bounding the BSA and the GR only from measurements of first and second moments of the collective spin operator.
description: Comments are welcome
The Radio Neutrino Observatory Targeting the radio emission of neutrinos above 10 PeV at South Pole
Creators: name: Karle, Albrecht
name: Nelles, Anna
Publisher: name: Zenodo
Year: 2019
Subjects: neutrino

description: Poster presented at the XVIII Internationale Workshop on Neutrino Telescopes (Venice, March 18-22, 2019)
Epitaxial Bi2FeCrO6 Multiferroic Thin Films
Creators: name: Nechache, Riad
name: Harnagea, Catalin
name: Carignan, Louis-Philippe
name: Menard, David
name: Pignolet, Alain
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present here experimental results obtained on Bi2FeCrO6 (BFCO) epitaxial films deposited by laser ablation directly on SrTiO3 substrates. It has been theoretically predicted, by Baettig and Spaldin, using first-principles density functional theory that BFCO is ferrimagnetic (with a magnetic moment of 2 Bohr magneton per formula unit) and ferroelectric (with a polarization of ~80 microC/cm2 at 0K). The crystal structure has been investigated using X-ray diffraction which shows that the films are epitaxial with a high crystallinity and have a degree of orientation depending of the deposition conditions and that is determined by the substrate crystal structure. Chemical analysis carried out by X-ray Microanalysis and X-ray Photoelectron Spectroscopy (XPS) indicates the correct cationic stoichiometry in the BFCO layer, namely (Bi:Fe:Cr = 2:1:1). XPS depth profiling revealed that the oxidation state of Fe and Cr ions in the film remains 3+ throughout the film thickness and that both Fe and Cr ions are homogeneously distributed throughout the depth. Cross-section high-resolution transmission electron microscopy images together with selected area electron diffraction confirm the crystalline quality of the epitaxial BFCO films with no identifiable foreign phase or inclusion. The multiferroic character of BFCO is proven by ferroelectric and magnetic measurements showing that the films exhibit ferroelectric and magnetic hysteresis at room temperature. In addition, local piezoelectric measurements carried out using piezoresponse force microscopy (PFM) show the presence of ferroelectric domains and their switching at the sub-micron scale.
description: Accepted for publication in Philosophical Magazine Letters
Movement Disorders After Stroke in Adults: A Review
Creators: name: Bansil, Shalini
name: Prakash, Neel
name: Kaye, Joel
name: Wrigley, Sandra
name: Manata, Christina
name: Stevens-Haas, Claire
name: Kurlan, Roger
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2012

description: Background: Movement disorders occur in association with stroke and may have important clinical implications. Methods: We reviewed the medical literature regarding the clinical phenomenology, prevalence, localization and etiologic implications, and treatments for movement disorders occurring after stroke in adult patients. Results: Movement disorders occur uncommonly after stroke and include both hyperkinetic and parkinsonian conditions. They can occur at the time of stroke or appear as a later manifestation. Stroke lesions are typically due to small vessel cerebrovascular disease in the middle or posterior cerebral artery territory, vessels supplying the basal ganglia. Hemorrhagic lesions are more likely to induce hyperkinetic movements. Movement disorders in the setting of stroke tend to resolve spontaneously over time. Medical and surgical therapies are available to treat the movement problems. Discussion: Movement disorders after stroke can be helpful in localizing lesions after stroke, determining the etiology of stroke, may need to be a target for therapy and may importantly influence long term outcome.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Transverse Knots Distinguished by Knot Floer Homology
Creators: name: Ng, Lenhard
name: Ozsvath, Peter
name: Thurston, Dylan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Geometric Topology (math.GT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 57R17; 57R58, 57M25

description: We exhibit pairs of transverse knots with the same self-linking number that are not transversely isotopic, using the recently defined knot Floer homology invariant for transverse knots and some algebraic refinements of it.
description: Added explanations, corrected statement of Proposition 2
Examining the Motor Phenotype of Patients with Both Essential Tremor and Parkinson's Disease
Creators: name: Simões, Rita M.
name: Constantino, Anne
name: Gibadullina, Eliza
name: Houghton, David
name: Louis, Elan D.
name: Litvan, Irene
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2012

description: Background: The subset of patients with essential tremor (ET) that develops Parkinson's disease (PD) has not been fully clinically characterized. Methods: Motor features were retrospectively reviewed in 18 ET patients who developed PD (ET→PD), 20 ET and 30 PD patients with similar ages and disease durations. Results: Fewer ET→PD than ET patients had widespread postural and/or action tremor (2/17 [11.8%] vs. 11/17 [64.7%]; p = 0.001) and marginally fewer had cerebellar signs (1/15 [6.7%] vs. 6/18 [33.3%], p = 0.06). ET→PD patients required fewer ET medications than did their counterparts with ET (p = 0.001). ET→PD patients and PD patients did not differ in UPDRS, Hoehn and Yahr, or Schwab and England scores (each p≥0.14). Discussion: ET patients who develop PD may have distinct pre-PD motor features compared to their counterparts with ET who do not develop co-existing PD. Prospective studies are needed to evaluate the predictive value of these clinical features for the emergence of PD.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Intermediate CAG repeats in Huntington’s Disease: Analysis of COHORT
Creators: name: Ha, Ainhi Duy
name: Beck, Christopher A
name: Jankovic, Joseph
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2012

description: Background: There is emerging evidence that clinical and neuro-pathological manifestations of Huntington's disease (HD) may occur in individuals with intermediate length cytosine-adenine-guanine (CAG) repeats (27–35 CAG repeats) in the Huntingtin (HTT) gene. We aim to further define the clinical characteristics of individuals who possess CAG repeat lengths in this range. Methods: Data from the Cooperative Huntington's Observational Research Trial (COHORT) were analyzed. Participants were categorized according to the number of CAG repeats into normal (≤26), intermediate (27–35) and HD (≥36) groups. The motor, cognitive and behavioral scores on the Unified Huntington's Disease Rating Scale (UHDRS) were compared between the intermediate and normal groups. Results: Of 1985 individuals affected by HD or with a family history of HD who were genotyped, 50 (2.5%) had their larger CAG repeat in the intermediate range. There were statistically significant differences in scores of some motor, cognitive, and behavioral domains of UHDRS at baseline between normal and intermediate length CAG repeats. Furthermore, a significantly greater number of subjects with CAG repeats in the intermediate range reported at least one suicide attempt compared to the normal group. Discussion: Our findings of motor, cognitive and behavioral abnormalities in individuals with intermediate CAG repeats suggest the presence of subtle, but relevant, disease manifestations in patients with intermediate CAG repeats. These results have important implications for the pathogenesis of the disease and genetic counseling.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Theory of Polaron Resonance in Quantum Dots and Quantum-Dot Molecules
Creators: name: Hung, Kuan-Ming
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The theory of exciton coupling to photons and LO phonons in quantum dots (QDs) and quantum-dot molecules (QDMs) is presented. Resonant-round trips of the exciton between the ground (bright) and excited (dark or bright) states mediated by the LO-phonon alter the decay time and yield the Rabi oscillation. The initial distributions of the population in the ground and the excited states dominate the oscillating amplitude and frequency. This property provides a detectable signature to the information stored in a qubit made from QD or QDM for a wide range of temperature T. Our results presented herein provide an explanation to the anomaly on T-dependent decay in self-assembled InGaAs/GaAs QDMs recently reported by experiment.
description: 30 pages, 8 figures
Paroxysmal Kinesigenic Dyskinesia-like Symptoms in a Patient with Tourette Syndrome
Creators: name: Oyama, Genko
name: Okun, Michael S.
name: Ashizawa, Tetsuo
name: Malaty, Irene A.
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2011

description: Background: Paroxysmal kinesigenic dyskinesia (PKD) is characterized by episodic dystonia or choreiform movements provoked by sudden voluntary movement. PKD is not commonly reported in Tourette syndrome (TS). We describe a unique case of TS with PKD-like episodic dyskinesia that responded to carbamazepine. Case Report: A 36-year-old male with long-standing TS developed paroxysmal “cramping”. Attacks were provoked by quick, sudden arm movements, which induced dystonic cramping, or by reaching overhead, which caused painful contraction of truncal muscles. The spells typically lasted 5–20 seconds and occurred multiple times daily. The patient’s mother suffered from intermittent dystonic toe curling. In view of the similarity of symptoms to PKD, carbamazepine was prescribed at 400 mg daily. The symptoms resolved completely. Inadvertent discontinuation led to relapse, and resumption led to recapture of benefit. Discussion: This case demonstrates the possibility that PKD-like symptoms may co-occur with TS and may be responsive to carbamazepine.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Phase Transitions in Higher Derivative Gravity
Creators: name: Dey, Tanay K.
name: Mukherji, Sudipta
name: Mukhopadhyay, Subir
name: Sarkar, Swarnendu
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This paper deals with black holes, bubbles and orbifolds in Gauss-Bonnet theory in five dimensional anti de Sitter space. In particular, we study stable, unstable and metastable phases of black holes from thermodynamical perspective. By comparing bubble and orbifold geometries, we analyse associated instabilities. Assuming AdS/CFT correspondence, we discuss the effects of this higher derivative bulk coupling on a specific matrix model near the critical points of the boundary gauge theory at finite temperature. Finally, we propose another phenomenological model on the boundary which mimics various phases of the bulk space-time.
description: 33 pages, 12 figures, LaTeX, typos corrected, clarifications in sections 5 and 6, references added
Frequency Light Shifts Caused by the Effects of Quantization of Atomic Motion in an Optical Lattice
Creators: name: Taichenachev, A. V.
name: Yudin, V. I.
name: Ovsiannikov, V. D.
name: Pal'chikov, V. G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Frequency light shifts resulting from the localization effects and effects of the quantization of translational atomic motion in an optical lattice is studied for a forbidden optical transition $J$=0$\to$$J$=0. In the Lamb-Dicke regime this shift is proportional to the square root from the lattice field intensity. With allowance made for magneto-dipole and quadrupole transitions, the shift does not vanish at the magic wavelength, at which the linear in intensity shift is absent. Preliminary estimates show that this shift can have a principal significance for the lattice-based atomic clocks with accuracy of order of 10$^{-16}-10^{-18}$. Apart from this, we find that the numerical value of the magic frequency depends on the concrete configuration of the lattice field and it can vary within the limits 1-100 MHz (depending on element) as one passes from one field configuration to another. Thus, theoretical and experimental investigations of contributions originated from magneto-dipole and quadrupole transitions are of principal self-dependent interest.
description: 4 pages,1 figure, RevTex
Determination of density of states of thin high-$T_c$ films by FET type microstructures
Creators: name: Mishonov, Todor
name: Stoev, Martin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A simple electronic experiment with a field effect transistor type microstructure is suggested. The thin superconductor layer is the source-drain channel of the layered structure where an AC current is applied. It is necessary to measure the second harmonic of the source-gate voltage and third harmonic of the source-drain voltage. The electronic measurement can give the logarithmic derivative of the density of states which is an important parameter for fitting of parameters of the band structures.
description: 3 pages, 1 figure
Familial Cortical Myoclonic Tremor with Epilepsy and Cerebellar Changes: Description of a New Pathology Case and Review of the Literature
Creators: name: Sharifi, Sarvi
name: Aronica, Eleonora
name: Koelman, Johannes H. T. M.
name: Tijssen, Marina A. J.
name: Rootselaar, Anne-Fleur Van
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2012

description: Background: Over 60 Asian and European families with cortical myoclonic tremor and epilepsy have been reported under various names. Cerebellar changes may be part of the syndrome. In this study, we report the neuropathology findings in a new Dutch familial cortical myoclonic tremor with epilepsy case and review the literature on this syndrome. Methods: Neuropathological investigations were performed for a third case of the Dutch pedigree. In addition, we searched the literature for pedigrees meeting the criteria for benign familial myoclonic tremor and epilepsy. Results: Our third Dutch case showed cerebellar Purkinje cell changes and a normal cerebral cortex. The pedigrees described show phenotypical differences, cerebellar symptoms and cerebellar atrophy to a variable degree. Japanese pedigrees with linkage to chromosome 8q have been reported with milder disease features than members of Italian pedigrees with linkage to chromosome 2p. French pedigrees (5p) possibly show even more severe and progressive disease, including cognitive changes and cerebellar features. Discussion: Currently, familial cortical myoclonic tremor is not listed by the International League Against Epilepsy, although it can be differentiated from other epileptic syndromes. Genetic heterogeneity and phenotypical differences between pedigrees exist. Cerebellar changes seem to be part of the syndrome in at least a number of pedigrees.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Hippocampus segmentation in magnetic resonance images of Alzheimer's patients using Deep machine learning
Creators: name: Yousefi-Banaem, Hossein
name: Malekzadeh, Saber
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Background: Alzheimers disease is a progressive neurodegenerative disorder and the main cause of dementia in aging. Hippocampus is prone to changes in the early stages of Alzheimers disease. Detection and observation of the hippocampus changes using magnetic resonance imaging (MRI) before the onset of Alzheimers disease leads to the faster preventive and therapeutic measures. Objective: The aim of this study was the segmentation of the hippocampus in magnetic resonance (MR) images of Alzheimers patients using deep machine learning method. Methods: U-Net architecture of convolutional neural network was proposed to segment the hippocampus in the real MRI data. The MR images of the 100 and 35 patients available in Alzheimers disease Neuroimaging Initiative (ADNI) dataset, was used for the train and test of the model, respectively. The performance of the proposed method was compared with manual segmentation by measuring the similarity metrics. Results: The desired segmentation achieved after 10 iterations. A Dice similarity coefficient (DSC) = 92.3%, sensitivity = 96.5%, positive predicted value (PPV) = 90.4%, and Intersection over Union (IoU) value for the train 92.94 and test 92.93 sets were obtained which are acceptable. Conclusion: The proposed approach is promising and can be extended in the prognosis of Alzheimers disease by the prediction of the hippocampus volume changes in the early stage of the disease.
Four-spin-exchange- and magnetic-field-induced chiral order in two-leg spin ladders
Creators: name: Sato, Masahiro
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a mechanism of a vector chiral long-range order in two-leg spin-1/2 and spin-1 antiferromagnetic ladders with four-spin exchanges and a Zeeman term. It is known that for one-dimensional quantum systems, spontaneous breakdown of continuous symmetries is generally forbidden. Any vector chiral order hence does not appear in spin-rotationally [SU(2)]-symmetric spin ladders. However, if a magnetic field is added along the S^z axis of ladders and the SU(2) symmetry is reduced to the U(1) one, the z component of a vector chiral order can emerge with the remaining U(1) symmetry unbroken. Making use of Abelian bosonization techniques, we actually show that a certain type of four-spin exchange can yield a vector chiral long-range order in spin-1/2 and spin-1 ladders under a magnetic field. In the chiral-ordered phase, the Z_2 interchain-parity (i.e., chain-exchange) symmetry is spontaneously broken. We also consider effects of perturbations breaking the parity symmetry.
description: 8 pages, 1 figure, RevTex, published version
The Relationship Between Parkinson's Disease and Essential Tremor: Review of Clinical, Epidemiologic, Genetic, Neuroimaging and Neuropathological Data, and Data on the Presence of Cardinal Signs of Parkinsonism in Essential Tremor
Creators: name: Jiménez-Jiménez, Félix Javier
name: Alonso-Navarro, Hortensia
name: García-Martín, Elena
name: Agúndez, José A.G.
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2012

description: Background: The possible relationship between essential tremor (ET) and Parkinson’s disease (PD) remains controversial since the first description of PD. However, there is increasing evidence suggesting the overlap between these two disorders. The aim of this review is to examine the relationship between PD and ET, focusing on clinical, epidemiologic, genetic, neuroimaging and neuropathological data, and the presence of cardinal symptoms of parkinsonism in ET. Methods: We conducted a PubMed search from 1966 until November 2011 on the relationship between ET and PD and the presence of postural tremor in PD patients, and the presence of rest tremor, rigidity and slowed movements in ET patients are reviewed. Results: Clinical series, follow-up studies of ET patients, and case-control and genetic epidemiological studies indicate that ET is associated with increased risk for PD. Some neuroimaging studies and neuropathological reports suggest association between the two diseases. ET patients have shown a high prevalence of rest tremor and at least 7 studies showed slowed movements (possibly related with cerebellar dysfunction and/or bradykinesia) in patients with ET. Conclusions: There is reasonable epidemiological and clinical evidence to support a link between ET and PD, although it is not clear what factors could predict the risk of developing PD in ET patients (or more rarely, of developing ET in PD patients). Future multicentric and multidisciplinary studies including epidemiological, clinical, neuroimaging, genetic and neuropathological assessment would be required to understand these associations.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Controlled multi-photon subtraction with cascaded Rydberg superatoms as single-photon absorbers
Creators: name: Stiesdal, Nina
name: Busche, Hannes
name: Kleinbeck, Kevin
name: Kumlin, Jan
name: Hansen, Mikkel G.
name: Büchler, Hans Peter
name: Hofferberth, Sebastian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The preparation of light pulses with well-defined quantum properties requires precise control at the individual photon level. Here, we demonstrate exact and controlled multi-photon subtraction from incoming light pulses. We employ a cascaded system of tightly confined cold atom ensembles with strong, collectively enhanced coupling of photons to Rydberg states. The excitation blockade resulting from interactions between Rydberg atoms limits photon absorption to one per ensemble and engineered dephasing of the collective excitation suppresses stimulated re-emission of the photon. We experimentally demonstrate subtraction with up to three absorbers. Furthermore, we present a thorough theoretical analysis of our scheme where we identify weak Raman decay of the long-lived Rydberg state as the main source of infidelity in the subtracted photon number. We show that our scheme should scale well to higher absorber numbers if the Raman decay can be further suppressed.
Tremor: Clinical Phenomenology and Assessment Techniques
Creators: name: Hess, Christopher W.
name: Pullman, Seth L.
Publisher: name: Tremor and Other Hyperkinetic Movements
Year: 2012

description: Tremors are among the most common movement disorders. As there can be considerable variability in the manner in which clinicians assess tremor, objective quantitative tools such as electromyography, accelerometry, and computerized, spiral analysis can be very useful in establishing a clinical diagnosis and in research settings. In this review, we discuss the various methods of quantitative tremor analysis and the classification and pathogenesis of tremor. The most common pathologic tremors and an approach to the diagnosis of tremor etiology are described. Pathologic tremors are common, and the diagnosis of underlying etiology is not always straightforward. Computerized quantitative tremor analysis is a valuable adjunct to careful clinical evaluation in distinguishing tremulous diseases from physiologic tremors, and can also help shed light on their pathogenesis.
description: Tremor and Other Hyperkinetic Movements, Tremor and Other Hyperkinetic Movements
Search for the Rare Decay B0_s -> phi mu^+ mu- with the D0 Detector
Creators: name: D0 Collaboration
name: Abazov, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a search for the flavor-changing neutral current decay B0_s -> phi mu+ mu- using about 0.45 fb^-1 of data collected in p \bar p collisions at sqrt{s} =1.96 TeV with the DØdetector at the Fermilab Tevatron Collider. We find an upper limit on the branching ratio of this decay normalized to B0_s -> J/psi phi of B(B0_s -> phi mu+ mu-)/B(B0_s -> J/psi phi) < 4.4\times 10^{-3} at the 95% C.L. Using the central value of the world average branching fraction of B0_s -> J/psi phi, the limit corresponds to B(B0_s -> phi mu+ mu-) < 4.1 \times 10^{-6} at the 95% C.L., the most stringent upper bound to date.
description: 7 pages, 2 figures, LaTeX, to be submitted to Physical Review Letters
Magnon-spinon dichotomy in the Kitaev hyperhoneycomb $β$-Li$_2$IrO$_3$
Creators: name: Ruiz, Alejandro
name: Breznay, Nicholas P.
name: Li, Mengqun
name: Rousochatzakis, Ioannis
name: Allen, Anthony
name: Zinda, Isaac
name: Nagarajan, Vikram
name: Lopez, Gilbert
name: Upton, Mary H.
name: Kim, Jungho
name: Said, Ayman H.
name: Huang, Xian-Rong
name: Gog, Thomas
name: Casa, Diego
name: Birgeneau, Robert J.
name: Koralek, Jake D.
name: Analytis, James G.
name: Perkins, Natalia B.
name: Frano, Alex
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The family of edge-sharing tri-coordinated iridates and ruthenates has emerged in recent years as a major platform for Kitaev spin liquid physics, where spins fractionalize into emergent magnetic fluxes and Majorana fermions with Dirac-like dispersions. While such exotic states are usually pre-empted by long-range magnetic order at low temperatures, signatures of Majorana fermions with long coherent times have been predicted to manifest at intermediate and higher energy scales, similar to the observation of spinons in quasi-1D spin chains. Here we present a Resonant Inelastic X-ray Scattering study of the magnetic excitations of the hyperhoneycomb iridate $β$-Li$_2$IrO$_3$ under a magnetic field with a record-high-resolution spectrometer. At low-temperatures, dispersing spin waves can be resolved around the predicted intertwined incommensurate spiral and field-induced zigzag orders, whose excitation energy reaches a maximum of 16meV. A 2T magnetic field softens the dispersion around ${\bf Q}=0$. The behavior of the spin waves under magnetic field is consistent with our semiclassical calculations for the ground state and the dynamical spin structure factor, which further predicts that the ensued intertwined uniform states remain robust up to very high fields (100 T). Most saliently, the low-energy magnon-like mode is superimposed by a broad continuum of excitations, centered around 35meV and extending up to 100meV. This high-energy continuum survives up to at least 300K -- well above the ordering temperature of 38K -- and gives evidence for pairs of long-lived Majorana fermions of the proximate Kitaev spin liquid.
description: 8 pages, 4 figures
D1.3 Data Management Plan (v1.2 July 2019). Deliverable report of project H2020 MONOCLE (grant 776480)
Creators: name: Clements, Oliver
name: Poser, Kathrin
name: Simis, Stefan
Publisher: name: Zenodo
Year: 2018

description: The objective of this data management plan (DMP) is to detail the plan for management of data generated and collected within the MONOCLE project. The DMP describes the data management life cycle for all datasets collected, processed and/or generated by the project. It covers • what data will be collected, processed or generated • how the data will be handled during and after the project • who is considered as an owner of a data set and who it is shared with • how the sharing of the data within and outside the project is organised • what formats, meta data and standards the data will adhere to • how data will be curated and preserved MONOCLE data will consist of a diverse range of types and formats and standardization of the data and data flows is one of the main project objectives.
Perceived safety from crime in the outdoor environment
Creators: name: Loewen, Laura June
Publisher: name: University of British Columbia
Year: 2011

description: Past research reports a number of environmental characteristics which can influence perceived safety in the outdoor public environment. Appleton's Prospect and Refuge Theory attempts to explain how the environment can affect people's feelings of perceived safety by its offering (or not) of the ability to see without being seen. According to Appleton, it is this ability which is the basis of all other activities and thus a place which offers a view and possible hiding places will be perceived to be attractive because it fulfils survival needs. The purpose of this research was to discover, first, which environmental characteristics people will name as being important when they are not prompted to consider any particular ones, and second, how those characteristics will affect feelings of perceived safety when presented visually and how they might interact with each other. Findings showed that subjects most often mentioned "light", "access to help", and "open space" as contributing to perceived safety in the outdoor environment. These three features can be seen to fit Prospect and Refuge Theory in that light and open space offer a good view and access to help offers unambiguous refuge. When tested in an experimental setting, the three features interact to create a number of possible environments some of which are considered to be safer than others: The situations which contained all three of the features (thus offered a balance of the values of each) were rated as being safer than situations which offered one or two of the features and compromised the other(s) and situations in which none of the three features was represented. Design implications and future research are discussed.
Global optimization of functional redundancy in a 6R robot for smoothing five-axis milling operations
Creators: name: Liu, Yuesheng
name: Chen, Xindu
name: Wu, Lei
name: Huang, Guancheng
name: Luo, Jianming
name: Huang, Yunbao
name: Li, Pu
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Space Science
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: Functional redundancy optimization is one of the most effective ways to improve robotic posture and performance. However, owing to the trade-off between smoothness of the robot's motion and other important aspects of performance, the optimization problem is too nonlinear to be solved in robotic milling processes. In this article, a derivation is shown that the robot's motion will be approximately smooth when the functional redundancies for each cutter location are smoothing variables. On this basis, a Legendre surrogate model is constructed to plan the overall optimal functional redundancy by remarkably reduced computation. Moreover, a trimmed sequential linear programming method is proposed to improve the solution further. From the outcomes of a 3D S-shaped grooves real milling experiment, the robot motion paths planned by the proposed methods achieve more stable tool-tip milling performance than that of comparable methods, while being several times or even 10 times faster in computational efficiency.
Ανάπτυξη μεθόδων προσδιορισμού ιχνοστοιχείων σε τρόφιμα φυτικής προέλευσης με την τεχνική της φασματοσκοπίας ατομικής εκπομπής επαγωγικά συζευγμένου πλάσματος
Creators: name: Awad, Momen A.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: ICP-AES

description: Στα πλαίσια της διατριβής αυτής αναπτύχθηκαν και βελτιστοποιήθηκαν αναλυτικές μέθοδοι για την ανάλυση βασικών φυτικών τροφών όπως δημητριακών, οσπρίων και ξηρών καρπών. Η μέθοδος έχει ικανοποιητική ακρίβεια, γρήγορη, πιστότητα και με χαμηλά όρια ανίχνευσης. Επιτυγχάνεται ο πολυστοιχειακός προσδιορισμός κύριων(Cr, Cu, Fe, Mg, Mn, Zn), δευτερευόντων με τη μέθοδο ICP-AES. Σε αυτή τη μελέτη, τέσσερις διαφορετικές διαδικασίες πέψης μελετήθηκαν σε βάθος και εκτιμήθηκαν για την ακρίβεια τους όσον αφορά στην επίδραση τους στον προσδιορισμό των περισσοτέρων στοιχείων στα δείγματα που υπάρχουν στο εμπόριο. Η μέθοδος υγρής πέψης με HNO3/H2SO4 συστήνεται για τα δείγματα δημητριακών, ενώ η υγρή πέψη με HNO3/H2O2 συστήνεται για τα οποία έχουν υψηλή συγκέντρωση λιπιδίων
description: In this contribution, different dejestion procedures were throughly investigated and accurately evaluated with respect to their effect on the analysis of food samples. After optimization, four procedures were selected and further developed for determination of Aj, Al, Ba, Bi, Cd, Cr, Cu, Fe, Ga, In, Mg, Pb and Zn by ICP-AES. Experimental designs were used for identifuing the critical factors in determining the response variables of interest and to select optimized dijestion conditions for food samples. The instrumental conditions were also optimized. The results indicated that, some elements were abundantly present, but others were intermdiate