cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fully Modied Narrow-Band Least Squares Estimation of Stationary Fractional Cointegration
Creators: name: Orregaard Nielsen, Morten
name: Frederiksen, Per
name: Orregaard Nielsen, Morten
name: Frederiksen, Per
Publisher: name: Unknown
Year: 2009
Subjects: subject: Financial Economics
subject: Fractional cointegration
subject: frequency domain
subject: fully modified estimation
subject: long memory
subject: semiparametric

description: We consider estimation of the cointegrating relation in the stationary fractional cointegration model which has found important application recently, especially in nancial economics. Previous research on this model has considered a semiparametric narrow-band least squares (NBLS) estimator in the frequency domain, often under a condition of non-coherence between regressors and errors at the zero frequency. We show that in the absence of this condition, the NBLS estimator is asymptotically biased, and also that the bias can be consistently estimated. Consequently, we introduce a fully modied NBLS estimator which eliminates the bias, and indeed enjoys a faster rate of convergence than NBLS in general. We also show that local Whittle estimation of the integration order of the errors can be conducted consistently on the residuals from NBLS regression, whereas the estimator has the same asymptotic distribution as if the errors were observed only under the condition of non-coherence. Furthermore, compared to much previous research, the development of the asymptotic distribution theory is based on a dierent spectral density representation, which is relevant for multivariate fractionally integrated processes, and the use of this representation is shown to result in lower asymptotic bias and variance of the narrow-band estimators. We also present simulation evidence and a series of empirical illustrations to demonstrate the feasibility and empirical relevance of our methodology.
SparseIDS: Learning Packet Sampling with Reinforcement Learning
Creators: name: Bachl, Maximilian
name: Meghdouri, Fares
name: Fabini, Joachim
name: Zseby, Tanja
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Recurrent Neural Networks (RNNs) have been shown to be valuable for constructing Intrusion Detection Systems (IDSs) for network data. They allow determining if a flow is malicious or not already before it is over, making it possible to take action immediately. However, considering the large number of packets that has to be inspected, for example in cloud/fog and edge computing, the question of computational efficiency arises. We show that by using a novel Reinforcement Learning (RL)-based approach called SparseIDS, we can reduce the number of consumed packets by more than three fourths while keeping classification accuracy high. To minimize the computational expenses of the RL-based sampling we show that a shared neural network can be used for both the classifier and the RL logic. Thus, no additional resources are consumed by the sampling in deployment. Comparing to various other sampling techniques, SparseIDS consistently achieves higher classification accuracy by learning to sample only relevant packets. A major novelty of our RL-based approach is that it can not only skip up to a predefined maximum number of samples like other approaches proposed in the domain of Natural Language Processing but can even skip arbitrarily many packets in one step. This enables saving even more computational resources for long sequences. Inspecting SparseIDS's behavior of choosing packets shows that it adopts different sampling strategies for different attack types and network flows. Finally we build an automatic steering mechanism that can guide SparseIDS in deployment to achieve a desired level of sparsity.
Likelihood inference for a nonstationary fractional autoregressive model
Creators: name: Johansen, Soren
name: Orregaard Nielsen, Morten
name: Johansen, Soren
name: Orregaard Nielsen, Morten
Publisher: name: Unknown
Year: 2010
Subjects: subject: Financial Economics
subject: Research Methods/ Statistical Methods
subject: Dickey-Fuller test
subject: fractional unit root
subject: likelihood inference

description: This paper discusses model-based inference in an autoregressive model for fractional processes which allows the process to be fractional of order d or d􀀀b. Fractional di¤er- encing involves in nitely many past values and because we are interested in nonstation- ary processes we model the data X1; : : : ;XT given the initial values X􀀀n; n = 0; 1; : : :, as is usually done. The initial values are not modeled but assumed to be bounded. This represents a considerable generalization relative to all previous work where it is assumed that initial values are zero. For the statistical analysis we assume the condi- tional Gaussian likelihood and for the probability analysis we also condition on initial values but assume that the errors in the autoregressive model are i.i.d. with suitable moment conditions. We analyze the conditional likelihood and its derivatives as stochastic processes in the parameters, including d and b, and prove that they converge in distribution. We use the results to prove consistency of the maximum likelihood estimator for d; b in a large compact subset of f1=2 < b < d < 1g, and to nd the asymptotic distribution of the estimators and the likelihood ratio test of the associated fractional unit root hypothesis. The limit distributions contain the fractional Brownian motion of type II.
The effect of mothers' employment and social class on their children's school performance, conduct and stress within the Arab community in a mixed city in Israel
Creators: name: Baya'a, Amal Roby
Publisher: name: American University
Year: 2023

description: The social phenomenon of working mothers has become a fact in the Arab world and in Israel. Several questions were posed regarding the effect of this phenomenon on the development of the employed mothers' children. This study is a pioneer one which investigates the effect of the Arab mothers' employment, in a mixed city (Arab and Jewish citizens) called Acre in Israel, on their children's school performance, conduct, and stress, when considering also the mothers' social class as an intervening variable. The study sample included 200 students who were randomly selected from the only two secondary Arab schools in the mixed city Acre. One is private and the other is public. The study sample included children of working mothers (100) and children of non-working mothers (100). The participants in this study completed a personal data inventory to determine their social class and other demographic data, and the School Situation Survey (Helms and Gable, 1989) to obtain a measurement for their school stress. The average grades of the subjects mathematics, Arabic, Hebrew, and English were used to measure the children's school performance, and ranking evaluations of the school counselors were used to measure the children's school conduct. The findings of the study showed that mothers' employment had no significant effect on the children's school performance, conduct, and stress, except on children of mothers with high educational level and mothers of high social class. On those children, mother's employment had, surprisingly, a significant positive effect on their children's school performance. But, it had no significant effects on their children's school conduct and stress.
Additional file 8 of A metabolic switch regulates the transition between growth and diapause in C. elegans
Creators: name: Sider Penkov
name: Bharath Kumar Raghuraman
name: Erkut, Cihan
name: Oertel, Jana
name: Galli, Roberta
name: Ackerman, Eduardo Jacobo Miranda
name: Vorkel, Daniela
name: Jean-Marc Verbavatz
name: Koch, Edmund
name: Fahmy, Karim
name: Shevchenko, Andrej
name: Teymuras V. Kurzchalia
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Developmental Biology
subject: Inorganic Chemistry
subject: Computational Biology

description: Additional file 8: Figure S8. Control of the gluconeogenesis and the enzyme molar ratios. a Absolute quantification of enzymes of the gluconeogenesis and glycolysis in daf-2 and daf-2;aak-2 grown at 25 °C with or without DA compared to daf-2 animals at 15 °C. The red arrows and the green circle represent the two competing reactions at the point of divergence between oxaloacetate recycling and entry into gluconeogenesis. Means ± standard deviation (S.D.) of 3 biological replicates with 2 technical replicates each. b Median molar abundance ± S.D. of metabolic pathways. 3 biological replicates with 2 technical replicates each. c Median fold change ± S.D. of molar abundances of all proteins in dauers compared to L3 larvae. 3 biological replicates with 2 technical replicates each. d Median fold change ± S.D. of molar abundances of proteins according to the metabolic pathways in dauers compared to L3 larvae. 3 biological replicates with 2 technical replicates each. e Molar ratio between ICL-1 and IDHG-1. f Molar ratio between ICL-1 and IDH-1. g Molar ratio between PFK-1 and FBP-1. In e, f, and g: means ± (S.D.) of 3 biological replicates with 2 technical replicates each; p-values represent p > 0.05 (ns), p ≤ 0.05 (*), p ≤ 0.01 (**), p ≤ 0.001 (***), p ≤ 0.0001 (****). One way ANNOVA was performed with Holm-Bonferroni statistical method.
Issues pertaining to D'yakonov-Perel' spin relaxation in quantum wire channels
Creators: name: Pramanik, S.
name: Bandyopadhyay, S.
name: Cahay, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We elucidate the origin and nature of the D'yakonov-Perel' spin relaxation in a quantum wire structure, showing (analytically) that there are three necessary conditions for it to exist: (i) transport must be multi-channeled, (ii) there must be a Rashba spin orbit interaction in the wire, and (iii) there must also be a Dresselhaus spin orbit interaction. Therefore, the only effective way to completely eliminate the D'yakonov-Perel' relaxation in compound semiconductor channels with structural and bulk inversion asymmetry is to ensure strictly single channeled transport. In view of that, recent proposals in the literature that advocate using multi-channeled quantum wires for spin transistors appear ill-advised.
The effects of a self-advocacy training program on the self-esteem of learning-disabled adolescents
Creators: name: Bullock, Marie McCarthy
Publisher: name: American University
Year: 2023

description: This study examined the effects of a twenty-session Self-Advocacy Training Program (SATP) on the self-esteem of thirty learning disabled students in a secondary school. It assessed self-esteem through the Coopersmith Self-Esteem Inventory (CSEI). An experimental design was used to test four hypotheses postulated to compare experimental and control group mean CSEI pre- and post-SATP scores. The effects of the program on grade-point average was also examined. The SATP was designed to help learning disabled students understand learning disabilities, to educate them on the laws which affect disabled populations, and to enable them to recognize their personal learning styles and strengths. It utilized cognitive teaching techniques to help students learn compensatory skills and coping strategies. Group discussion, group interaction exercises, and role playing were employed to help students become comfortable speaking out for themselves. Students examined sample Individualized Education Plans and educational reports, and were encouraged to examine their personal records with a special education teacher or counselor. One-tailed t tests at the.05 level were used to test the significance of differences between mean CSEI scores of the experimental and control groups. Compared to the control group, a significantly higher score was achieved after treatment by the experimental group in both self-esteem and grade-point average. Therefore, the SATP appears to have had a positive effect on both self-esteem and grade-point average for secondary learning disabled students. It was concluded that the SATP is an effective intervention to help learning disabled adolescents improve self-esteem and school grades. A regression analysis was used to examine factors which influenced gains made by students in the experimental group. Female gender and years in special education were found to most influence gains made in both self-esteem and grade-point average. Family structure was found to have the most detrimental effect in both areas.
Models of relativistic particle with curvature and torsion revisited
Creators: name: Arroyo, Josu
name: Barros, Manuel
name: Garay, Oscar J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Models, describing relativistic particles, where Lagrangian densities depend linearly on both the curvature and the torsion of the trajectories, are revisited in D=3 space forms. The moduli spaces of trajectories are completely and explicitly determined using the Lancret program. The moduli subspaces of closed solitons in the three sphere are also determined.
description: 13 pages
Additional file 7 of A metabolic switch regulates the transition between growth and diapause in C. elegans
Creators: name: Sider Penkov
name: Bharath Kumar Raghuraman
name: Erkut, Cihan
name: Oertel, Jana
name: Galli, Roberta
name: Ackerman, Eduardo Jacobo Miranda
name: Vorkel, Daniela
name: Jean-Marc Verbavatz
name: Koch, Edmund
name: Fahmy, Karim
name: Shevchenko, Andrej
name: Teymuras V. Kurzchalia
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Developmental Biology
subject: Inorganic Chemistry
subject: Computational Biology

description: Additional file 7: Figure S7. Control of the TCA and glyoxylate cycle. Absolute quantification of enzymes of the TCA cycle and the glyoxylate shunt in daf-2 and daf-2;aak-2 grown at 25 °C with or without DA compared to daf-2 animals at 15 °C. The red arrows and the green circle represent the two competing reactions at the point of divergence between the TCA and the glyoxylate pathway. Means ± standard deviation (S.D.) of 3 biological replicates with 2 technical replicates each.
Effective tight-binding models in optical moiré potentials
Creators: name: Johnstone, Dean
name: Mishra, Shanya
name: Zhu, Zhaoxuan
name: Sanchez-Palencia, Laurent
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A twist between two systems offers the possibility to drastically change the underlying physical properties. To that end, we study the bandstructure of twisted moiré potentials in detail. At sets of commensurate twisting angles, the low energy single-particle spectrum of a twisted moiré potential will form into distinct bands and gaps. To a first approximation, energy bands can be qualitatively modelled by harmonic states, localised in different potential minima. The bands are intrinsically linked to the number of distinct minima and size of the moiré unit cell, with smaller cells producing larger gaps and vice versa. For shallower potential depths, degeneracies between harmonic states are lifted by virtue of anharmonic confinement and coupling between states. Depending on the exact geometry of potential minima, bands can then be classified by $4$ unique forms of tight-binding models. We find excellent agreement between the continuous spectrum and fitting to our tight-binding models, allowing for accurate tunnelling rates and onsite energies to be extracted. Our results are directly relevant to the bosonic, many-body problem, and thus provide further understanding on the relative stability of quantum phases both in theory and experiments. In particular, the prominence of gaps can be mapped to strongly correlated insulating phases. Furthermore, tunnelling rates of different bands serve as thresholds on temperature in which a phase can be either a normal fluid or superfluid.
description: 19 pages, 14 figures, comments welcome
The effects of a self-advocacy training program on the self-esteem of learning-disabled adolescents
Creators: name: Bullock, Marie McCarthy
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3903
subject: Education systems
classificationCode: 3904
subject: Specialist studies in education

description: This study examined the effects of a twenty-session Self-Advocacy Training Program (SATP) on the self-esteem of thirty learning disabled students in a secondary school. It assessed self-esteem through the Coopersmith Self-Esteem Inventory (CSEI). An experimental design was used to test four hypotheses postulated to compare experimental and control group mean CSEI pre- and post-SATP scores. The effects of the program on grade-point average was also examined. The SATP was designed to help learning disabled students understand learning disabilities, to educate them on the laws which affect disabled populations, and to enable them to recognize their personal learning styles and strengths. It utilized cognitive teaching techniques to help students learn compensatory skills and coping strategies. Group discussion, group interaction exercises, and role playing were employed to help students become comfortable speaking out for themselves. Students examined sample Individualized Education Plans and educational reports, and were encouraged to examine their personal records with a special education teacher or counselor. One-tailed t tests at the.05 level were used to test the significance of differences between mean CSEI scores of the experimental and control groups. Compared to the control group, a significantly higher score was achieved after treatment by the experimental group in both self-esteem and grade-point average. Therefore, the SATP appears to have had a positive effect on both self-esteem and grade-point average for secondary learning disabled students. It was concluded that the SATP is an effective intervention to help learning disabled adolescents improve self-esteem and school grades. A regression analysis was used to examine factors which influenced gains made by students in the experimental group. Female gender and years in special education were found to most influence gains made in both self-esteem and grade-point average. Family structure was found to have the most detrimental effect in both areas.
Comments on the kinematical structure of loop quantum cosmology
Creators: name: Velhinho, J. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We comment on the presence of spurious observables and on a subtle violation of irreducibility in loop quantum cosmology.
description: 7 pages
Quantum Hall network models as Floquet topological insulators
Creators: name: Potter, Andrew C.
name: Chalker, J. T.
name: Gurarie, Victor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Network models for equilibrium integer quantum Hall (IQH) transitions are described by unitary scattering matrices, that can also be viewed as representing non-equilibrium Floquet systems. The resulting Floquet bands have zero Chern number, and are instead characterized by a chiral Floquet (CF) winding number. This begs the question: How can a model without Chern number describe IQH systems? We resolve this apparent paradox by showing that non-zero Chern number is recovered from the network model via the energy dependence of network model scattering parameters. This relationship shows that, despite their topologically distinct origins, IQH and CF topology-changing transitions share identical universal scaling properties.
description: 5 pages, 3 figures, v2: references added, additional discussion of related prior work
An analysis of political economy and changing mass media policies in Taiwan: 1949-1990
Creators: name: Chen, Nelson Ning-Sheng
Publisher: name: American University
Year: 2023

description: This study seeks to explain the causes, consequences, and implications of changes in the Taiwan government's media policy, revealing links and relationships among economic development, the role of the state and policy formation. This analysis determines that in the case of Taiwan, social change, specifically political democratization and social modernization, was achieved as a result of economic development. The present researcher investigated the process of these changes based on Lipset's (1981) hypothesis that economic development is the precondition for political democracy, of which a free press is one of the important indices. This study employed qualitative and historical research methods. Data were collected in the research field through interviews with government and ruling party policymakers and analysis of relevant government documents on economic growth, political change, modernization, and government policy change regarding the mass media. For choosing interviewees three methods were used: snowball sampling, purposive sampling and random sampling. An accumulative approach was used to exhaust those relevant government documents to which the researcher was permitted access. The study found that the Taiwan experience of economic development, democratization and modernization process fully supports Lipset's hypothesis, confirming that a strong link exists between economic development and changes in mass media policies and in media industry. The study also found that economic development in Taiwan has been particularly conducive to subsequent modernization. Freedom of the press is guaranteed only by a modernized and democratic system. In a democratic society, ordinarily the government no longer imposes controls or restrictions on the mass media. The media become big enterprises which thrive economically by appealing to popular low tastes. Media monopolies which represent only the media owners' views also arise. Future studies relating to the topic of this study could employ media content analysis to examine the media's view on social change as revealed in news reports and editorials. In addition, a multiple research method consisting of a historical approach, content analysis, comparative study, and field research would be ideal in further studies of related topics.
X-ray Flux Related Timing and Spectral Features of 2S 1417-62
Creators: name: Inam, S. C.
name: Baykal, A.
name: Scott, D. M.
name: Finger, M.
name: Swank, J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: RXTE observations of the X-ray transient pulsar 2S 1417-62 between 1999 November and 2000 August with a total exposure of $\sim 394$ ksec were analyzed. Observations include a main outburst followed by a series of mini outbursts. Changes in pulse morphology and pulse fraction were found to be related to the changes in X-ray flux. Particularly low X-ray flux regions were found to have significantly lower pulse fractions with different pulse morphologies. The 3-60 keV PCA-HEXTE main outburst spectrum was modeled with an absorbed power law model with high energy cut-off and a Gaussian Iron line complex feature. Using the same spectral model, individual 3-20 keV PCA spectra were found to be softer and less absorbed in low X-ray flux regions between outbursts. Spectral studies showed that hydrogen column density was correlated, and the power law index was anti-correlated with the 3-20 keV X-ray flux. X-ray flux related spectral and timing features in 2S 1417-62 except for low X-ray flux regions were interpreted as a sign of disc accretion with a similar accretion geometry with a varying mass accretion rate ($\dot{M}$), whereas spectral and timing features of the low X-ray flux regions were interpreted as a sign of possible temporary accretion geometry change prior to the next periastron where $\dot{M}$ increases again to restore the original accretion geometry.
description: 14 pages, 6 figures, accepted for publication in MNRAS
An analysis of political economy and changing mass media policies in Taiwan: 1949-1990
Creators: name: Chen, Nelson Ning-Sheng
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4408
subject: Political science
subject: FOS: Political science
classificationCode: 4410
subject: Sociology
subject: FOS: Sociology

description: This study seeks to explain the causes, consequences, and implications of changes in the Taiwan government's media policy, revealing links and relationships among economic development, the role of the state and policy formation. This analysis determines that in the case of Taiwan, social change, specifically political democratization and social modernization, was achieved as a result of economic development. The present researcher investigated the process of these changes based on Lipset's (1981) hypothesis that economic development is the precondition for political democracy, of which a free press is one of the important indices. This study employed qualitative and historical research methods. Data were collected in the research field through interviews with government and ruling party policymakers and analysis of relevant government documents on economic growth, political change, modernization, and government policy change regarding the mass media. For choosing interviewees three methods were used: snowball sampling, purposive sampling and random sampling. An accumulative approach was used to exhaust those relevant government documents to which the researcher was permitted access. The study found that the Taiwan experience of economic development, democratization and modernization process fully supports Lipset's hypothesis, confirming that a strong link exists between economic development and changes in mass media policies and in media industry. The study also found that economic development in Taiwan has been particularly conducive to subsequent modernization. Freedom of the press is guaranteed only by a modernized and democratic system. In a democratic society, ordinarily the government no longer imposes controls or restrictions on the mass media. The media become big enterprises which thrive economically by appealing to popular low tastes. Media monopolies which represent only the media owners' views also arise. Future studies relating to the topic of this study could employ media content analysis to examine the media's view on social change as revealed in news reports and editorials. In addition, a multiple research method consisting of a historical approach, content analysis, comparative study, and field research would be ideal in further studies of related topics.
Chirality Change in String Theory
Creators: name: Douglas, M. R.
name: Zhou, C-G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is known that string theory compactifications leading to low energy effective theories with different chiral matter content ({\it e.g.} different numbers of standard model generations) are connected through phase transitions, described by non-trivial quantum fixed point theories. We point out that such compactifications are also connected on a purely classical level, through transitions that can be described using standard effective field theory. We illustrate this with examples, including some in which the transition proceeds entirely through supersymmetric configurations.
description: 50 pages, 2 figures
Effects of a leadership training course on participant self-perception of leadership style effectiveness
Creators: name: Conner, Charlotte Evans
Publisher: name: American University
Year: 2023

description: This quasi-experimental study examined the effects of a 40-hour leadership training course, Leading People Class, on participants' (67 managers/supervisors) self-perception of leadership style effectiveness in one computer corporation employing approximately 70,500 employees. It assessed self-perception through Leader Behavior Analysis II Self, Forms A and B (LBAII). Four hypotheses were tested by comparing both the experimental and control group LBAII mean and gain scores for pretest, posttest, and one-month follow-up posttest. Leading People Class was developed to provide instructional training which would enhance leadership effectiveness by reinforcing leadership knowledge and skills identified as essential for managerial discretion. Leading People Class employed techniques of adult learning theories. The course encouraged hands-on learning through exercises, demonstrations, and corporate-related role play situations. Both small and large group activities were a part of the course, as well as individual one-on-one application of theory which was presented. The data were analyzed using one-tailed and two-tailed independent and paired t tests at the.05 significance level. Mean scores on the pretest, posttest, and follow-up posttest were compared to determine if participation in the class caused a change in scoring results. Since the experimental group's pretest scores were significantly higher than those of the control group, an analysis of experimental and control group gain scores was used to determine posttest scores while controlling for pretest differences. Findings did not support the theoretical proposition that leader's self-perception of leadership style effectiveness, as assessed by LBAII, would significantly increase following completion of Leading People Class. No significant increase in leadership style effectiveness attributable to the training course was found. From study findings, the implication is that a structured training course, based on adult learning theories, such as Leading People Class, may not be an effective training strategy for the development of self-perception of leadership style effectiveness for corporate managers/supervisors.
Regenerative Medicine for Tendon/Ligament Injuries: De Novo Equine Tendon/Ligament Neotissue Generation and Application
Creators: name: Taguchi, Takashi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences

description: Tendon and ligament injuries are debilitating conditions across species. Poor regenerative capacities of these tissues limit restoration of original functions. The first study of this dissertation evaluated the effect of cellular administration on tendon/ligament injuries in horses using meta-analysis. The findings led to the second study that engineered implantable de novo tendon neotissue using equine adipose-derived multipotent stromal cells and collagen type I. The neotendon was evaluated for its biocompatibility and therapeutic potential in the third study using immunocompetent and immunocompromised rat bilateral calcaneal tendon elongation model. The fourth study investigated the therapeutic effects of neotendon in surgically-induced non-terminal equine accessory ligament of deep digital flexor tendon injury model.
Effects of a leadership training course on participant self-perception of leadership style effectiveness
Creators: name: Conner, Charlotte Evans
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: This quasi-experimental study examined the effects of a 40-hour leadership training course, Leading People Class, on participants' (67 managers/supervisors) self-perception of leadership style effectiveness in one computer corporation employing approximately 70,500 employees. It assessed self-perception through Leader Behavior Analysis II Self, Forms A and B (LBAII). Four hypotheses were tested by comparing both the experimental and control group LBAII mean and gain scores for pretest, posttest, and one-month follow-up posttest. Leading People Class was developed to provide instructional training which would enhance leadership effectiveness by reinforcing leadership knowledge and skills identified as essential for managerial discretion. Leading People Class employed techniques of adult learning theories. The course encouraged hands-on learning through exercises, demonstrations, and corporate-related role play situations. Both small and large group activities were a part of the course, as well as individual one-on-one application of theory which was presented. The data were analyzed using one-tailed and two-tailed independent and paired t tests at the.05 significance level. Mean scores on the pretest, posttest, and follow-up posttest were compared to determine if participation in the class caused a change in scoring results. Since the experimental group's pretest scores were significantly higher than those of the control group, an analysis of experimental and control group gain scores was used to determine posttest scores while controlling for pretest differences. Findings did not support the theoretical proposition that leader's self-perception of leadership style effectiveness, as assessed by LBAII, would significantly increase following completion of Leading People Class. No significant increase in leadership style effectiveness attributable to the training course was found. From study findings, the implication is that a structured training course, based on adult learning theories, such as Leading People Class, may not be an effective training strategy for the development of self-perception of leadership style effectiveness for corporate managers/supervisors.
Quantum Monte Carlo study of the pairing symmetry competition in the Hubbard model
Creators: name: Kuroki, Kazuhiko
name: Tanaka, Yukio
name: Kimura, Takashi
name: Arita, Ryotaro
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: To shed light into the pairing mechanism of possible spin-triplet superconductors (TMTSF)$_2$X and Sr$_2$RuO$_4$, we study the competition among various spin singlet and triplet pairing channels in the Hubbard model by calculating the pairing interaction vertex using the ground state quantum Monte Carlo technique. We model (TMTSF)$_2$X by a quarter-filled quasi-one dimensional (quasi-1D) Hubbard model,and the $γ$ band of Sr$_2$RuO$_4$ by a two dimensional (2D) Hubbard model with a band filling of $\sim 4/3$. For the quasi-1D system, we find that triplet $f$-wave pairing not only dominates over triplet p-wave in agreement with the spin fluctuation theory, but also looks unexpectedly competitive against d-wave. For the 2D system, although the results suggest presence of attractive interaction in the triplet pairing channels, the d-wave pairing interaction is found to be larger than those of the triplet channels.
Continuous-Time Models, Realized Volatilities, and Testable Distributional Implications for Daily Stock Returns
Creators: name: Andersen, Torben G.
name: Bollerslev, Tim
name: Frederiksen, Per
name: Orregaard Nielsen, Morten
name: Andersen, Torben G.
name: Bollerslev, Tim
name: Frederiksen, Per
name: Orregaard Nielsen, Morten
Publisher: name: Unknown
Year: 2008
Subjects: subject: Financial Economics
subject: Research Methods/ Statistical Methods
subject: Return distributions
subject: continuous-time models
subject: mixture-of-distributions hypothesis
subject: financial-time sampling
subject: high-frequency data
subject: volatility signature plots
subject: realized volatilities
subject: jumps
subject: leverage
subject: volatility feedback effects

description: We provide an empirical framework for assessing the distributional properties of daily speculative returns within the context of the continuous-time jump diffusion models traditionally used in asset pricing finance. Our approach builds directly on recently developed realized variation measures and non-parametric jump detection statistics constructed from high-frequency intraday data. A sequence of simple-to-implement moment-based tests involving various transformations of the daily returns speak directly to the importance of different distributional features, and may serve as useful diagnostic tools in the specifcation of empirically more realistic continuous-time asset pricing models. On applying the tests to the thirty individual stocks in the Dow Jones Industrial Average index, we find that it is important to allow for both time-varying diffusive volatility, jumps, and leverage effects to satisfactorily describe the daily stock price dynamics.
Governing the affairs of the town: Continuity and change in Rhode Island, 1750-1800
Creators: name: Herndon, Ruth Wallis
Publisher: name: American University
Year: 2023

description: This study, based on records kept by the clerks of twelve Rhode Island towns over fifty years, identifies common factors that bound Rhode Island to the larger New England region in the latter part of the eighteenth century. Rhode Island towns shared with all other New England towns a political framework of similar officials, a self-sufficient town government economy sustained by the same patterns of income and expenditure, and a set of regionally recognized and utilized solutions for the social problems posed by poor and troublesome inhabitants. In addition, New England towns all relied heavily on their town clerks, men of great prestige, wealth, and education who stayed in office longer than any other elected officials. The clerk functioned as the "hub" of the towns, receiving and dispensing information critical to the functioning of the community. The records clerks kept serve not only as the official history of their towns but also as journals of the clerks' priorities, concerns, and cultural sensibilities. This study uses the records of town clerks to trace the rise and fall of fourteen indicators of political, economic, and social change in Rhode Island during the Revolutionary Era. Indicators such as town meetings, town taxes, and warnouts of transients are statistically analyzed and organized into graphs that illustrate variations over time. The result is a paradox of continuity and change. The "skeleton" of the towns' operating structure remained unchanged throughout the period, reinforcing the idea of a conservative Revolution and challenging the idea of radical consequences in this state. But the "flesh" on the skeleton changed during the upheaval, as the number of town meetings tripled, local taxes quadrupled, and the number of poor transients soared. The Revolution tested the durability of Rhode Island town organization, which survived by flexing to accommodate the pressures of war and economic depression. This structure endured, and in 1800, Rhode Island's towns were organized just as they had been in 1750.
Volumetric parcellation of the right ventricle for regional geometric and functional assessment
Creators: name: Bernardino, Gabriel
name: Hodzic, Amir
name: Langet, Helene
name: LeGallois, Damien
name: De Craene, Mathieu
name: Ballester, Miguel Angel González
name: Saloux, Eric
name: Bijnens, Bart
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: 3D echocardiography is an increasingly popular tool for assessing cardiac remodelling in the right ventricle (RV). It allows quantification of the cardiac chambers without any geometric assumptions, which is the main weakness of 2D echocardiography. However, regional quantification of geometry and function is limited by the lower spatial and temporal resolution and the scarcity of identifiable anatomical landmarks. We developed a technique for regionally assessing the 3 relevant RV regions: apical, inlet and outflow. The method's inputs are end-diastolic (ED) and end-systolic (ES) segmented 3D surface models. The method first defines a partition of the ED endocardium using the geodesic distances from each surface point to apex, tricuspid valve and pulmonary valve: the landmarks that define the 3 regions. The ED surface mesh is then tetrahedralised, and the endocardial-defined partition is interpolated in the blood cavity via the Laplace equation. For obtaining an ES partition, the endocardial partition is transported from ED to ES using a commercial image-based tracking, and then interpolated towards the endocardium, similarly to ED, for computing volumes and ejection fraction (EF). We present a full assessment of the method's validity and reproducibility. First, we assess reproducibility under segmentation variability, obtaining intra- and inter- observer errors (4-10% and 10-23% resp.). Finally, we use a synthetic remodelling dataset to identify the situations in which our method is able to correctly determine the region that has remodelled. This dataset is generated by a novel mesh reconstruction method that deforms a reference mesh, locally imposing a given strain, expressed in anatomical coordinates. We show that the parcellation method is adequate for capturing local circumferential and global circumferential and longitudinal RV remodelling.
Equation of State for Spin Systems with Goldstone Bosons: the 3d O(4) Case
Creators: name: Cucchieri, Attilio
name: Mendes, Tereza
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose an improved parametric form for the equation of state of three-dimensional O(N) spin systems. The proposed form is a series expansion with two sets of terms, which contribute (mainly) separately to the description of the high- and low-temperature regions of the phase diagram. Our goal is a better description of the low-temperature phase at zero magnetic field (i.e. the coexistence line), characterized by singularities induced by Goldstone modes. We test our proposed form by comparison with existing Monte Carlo data for the N=4 case, which is of interest in studies of the QCD phase transition and for which the Goldstone-mode effects are quite pronounced. We find that the description of the numerical equation of state is indeed improved with respect to other fitting forms. In all cases considered we determine the coefficients nonperturbatively, from fits to the data. As a consequence, we are able to obtain a very precise characterization of the pseudo-critical line for the model.
description: 20 pages, 3 figures
Governing the affairs of the town: Continuity and change in Rhode Island, 1750-1800
Creators: name: Herndon, Ruth Wallis
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 43
subject: History, heritage and archaeology
classificationCode: 4303
subject: Historical studies

description: This study, based on records kept by the clerks of twelve Rhode Island towns over fifty years, identifies common factors that bound Rhode Island to the larger New England region in the latter part of the eighteenth century. Rhode Island towns shared with all other New England towns a political framework of similar officials, a self-sufficient town government economy sustained by the same patterns of income and expenditure, and a set of regionally recognized and utilized solutions for the social problems posed by poor and troublesome inhabitants. In addition, New England towns all relied heavily on their town clerks, men of great prestige, wealth, and education who stayed in office longer than any other elected officials. The clerk functioned as the "hub" of the towns, receiving and dispensing information critical to the functioning of the community. The records clerks kept serve not only as the official history of their towns but also as journals of the clerks' priorities, concerns, and cultural sensibilities. This study uses the records of town clerks to trace the rise and fall of fourteen indicators of political, economic, and social change in Rhode Island during the Revolutionary Era. Indicators such as town meetings, town taxes, and warnouts of transients are statistically analyzed and organized into graphs that illustrate variations over time. The result is a paradox of continuity and change. The "skeleton" of the towns' operating structure remained unchanged throughout the period, reinforcing the idea of a conservative Revolution and challenging the idea of radical consequences in this state. But the "flesh" on the skeleton changed during the upheaval, as the number of town meetings tripled, local taxes quadrupled, and the number of poor transients soared. The Revolution tested the durability of Rhode Island town organization, which survived by flexing to accommodate the pressures of war and economic depression. This structure endured, and in 1800, Rhode Island's towns were organized just as they had been in 1750.
Construction of the Voronoi Diagram and Secondary Polytope
Creators: name: Musin, Oleg R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: A set S of n points in general position in R^d defines the unique Voronoi diagram of S. Its dual tessellation is the Delaunay triangulation (DT) of S. In this paper we consider the parabolic functional on the set of triangulations of S and prove that it attains its minimum at DT in all dimensions. The Delaunay triangulation of S is corresponding to a vertex of the secondary polytope of S. We proposed an algorithm for DT's construction, where the parabolic functional and the secondary polytope are used. Finally, we considered a discrete analog of the Dirichlet functional. DT is optimal for this functional only in two dimensions.