cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New Developments in Mean Curvature Flow of Arbitrary Codimension Inspired By Yau Rigidity Theory
Creators: name: Lei, Li
name: Xu, Hong-Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this survey, we will focus on the mean curvature flow theory with sphere theorems, and discuss the recent developments on the convergence theorems for the mean curvature flow of arbitrary codimension inspired by the Yau rigidity theory of submanifolds. Several new differentiable sphere theorems for submanifolds are obtained as consequences of the convergence theorems for the mean curvature flow. It should be emphasized that Theorem 4.1 is an optimal convergence theorem for the mean curvature flow of arbitrary codimension, which implies the first optimal differentiable sphere theorem for submanifolds with positive Ricci curvature. Finally, we present a list of unsolved problems in this area.
description: This survey article was published in the Proceedings of the 7th International Congress of Chinese Mathematicians, Vol. I, 327-348, Adv. Lect. Math. 43, Int. Press, Somerville, MA, 2019
A regularized shallow-water waves system with slip-wall boundary conditions in a basin: theory and numerical analysis
Creators: name: Israwi, Samer
name: Kalisch, Henrik
name: Katsaounis, Theodoros
name: Mitsotakis, Dimitrios
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2022
Subjects: subject: 10299 Applied Mathematics not elsewhere classified
subject: FOS: Mathematics

description: Abstract The simulation of long, nonlinear dispersive waves in bounded domains usually requires the use of slip-wall boundary conditions. Boussinesq systems appearing in the literature are generally not well-posed when such boundary conditions are imposed, or if they are well-posed it is very cumbersome to implement the boundary conditions in numerical approximations. In the present paper a new Boussinesq system is proposed for the study of long waves of small amplitude in a basin when slip-wall boundary conditions are required. The new system is derived using asymptotic techniques under the assumption of small bathymetric variations, and a mathematical proof of well-posedness for the new system is developed. The new system is also solved numerically using a Galerkin finite-element method, where the boundary conditions are imposed with the help of Nitsche’s method. Convergence of the numerical method is analysed, and precise error estimates are provided. The method is then implemented, and the convergence is verified using numerical experiments. Numerical simulations for solitary waves shoaling on a plane slope are also presented. The results are compared to experimental data, and excellent agreement is found.
A Score-Driven Conditional Correlation Model for Noisy and Asynchronous Data: an Application to High-Frequency Covariance Dynamics*
Creators: name: Buccheri, Giuseppe
name: Bormetti, Giacomo
name: Corsi, Fulvio
name: Lillo, Fabrizio
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: The analysis of the intraday dynamics of covariances among high-frequency returns is challenging due to asynchronous trading and market microstructure noise. Both effects lead to significant data reduction and may severely affect the estimation of the covariances if traditional methods for low-frequency data are employed. We propose to model intraday log-prices through a multivariate local-level model with score-driven covariance matrices and to treat asynchronicity as a missing value problem. The main advantages of this approach are: (i) all available data are used when filtering the covariances, (ii) market microstructure noise is taken into account, (iii) estimation is performed by standard maximum likelihood. Our empirical analysis, performed on 1-second NYSE data, shows that opening hours are dominated by idiosyncratic risk and that a market factor progressively emerges in the second part of the day. The method can be used as a nowcasting tool for high-frequency data, allowing to study the real-time response of covariances to macro-news announcements and to build intraday portfolios with very short optimization horizons.
Measuring Granger Causality in Quantiles*
Creators: name: Xiaojun Song
name: Abderrahim Taamouti
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Plant Biology

description: We consider measures of Granger causality in quantiles, which detect and quantify both linear and nonlinear causal effects between random variables. The measures are based on nonparametric quantile regressions and defined as logarithmic functions of restricted and unrestricted expectations of quantile check loss functions. They can consistently be estimated by replacing the unknown expectations of check loss functions by their nonparametric kernel estimates. We derive a Bahadur-type representation for the nonparametric estimator of the measures. We establish the asymptotic distribution of this estimator, which can be used to build tests for the statistical significance of the measures. Thereafter, we show the validity of a smoothed local bootstrap that can be used in finite-sample settings to perform statistical tests. A Monte Carlo simulation study reveals that the bootstrap-based test has a good finite-sample size and power properties for a variety of data generating processes and different sample sizes. Finally, we provide an empirical application to illustrate the usefulness of measuring Granger causality in quantiles. We quantify the degree of predictability of the quantiles of equity risk premium using the variance risk premium, unemployment rate, inflation, and the effective federal funds rate. The empirical results show that the variance risk premium and effective federal funds rate have a strong predictive power for predicting the risk premium when compared to that of the predictive power of the other two macro variables. In particular, the variance risk premium is able to predict the center, lower and upper quantiles of the distribution of the risk premium; however, the effective federal funds rate predicts only the lower and upper quantiles. Nevertheless, unemployment and inflation rates have no effect on the risk premium.
Research Data Management: Simple Ways to Make your Research Life Easier
Creators: name: Morrell, Thomas E.
Publisher: name: Zenodo
Year: 2024
Subjects: Research Data Management
CaltechDATA

description: v1.10 Presentation on Research Data Management for the Fall 2024 Data Analysis in the Biological Sciences BE/Bi 103 course.

v1.9 Presentation on Research Data Management for the Fall 2023 Data Analysis in the Biological Sciences BE/Bi 103 course.

v1.8 Presentation on Research Data Management for the Fall 2021 Data Analysis in the Biological Sciences BE/Bi 103 course.

v1.7 Presentation on Research Data Management for the Fall 2020 Data Analysis in the Biological Sciences BE/Bi 103 course.

v1.6 Presentation on Research Data Management for the Fall 2019 Data Analysis in the Biological Sciences BE/Bi 103 course.

v1.5 Presentation on Research Data Management for the June 2019 Introduction to Programming for the Biological Sciences Bootcamp.

v1.4 Presentation on Research Data Management for the Fall 2018 Data Analysis in the Biological Sciences BE/Bi 103 course.

v1.3 Presentation on Research Data Management for the Fall 2017 Data Analysis in the Biological Sciences BE/Bi 103 course.

v1.2 Presentation on Research Data Management for the June 2017 Introduction to Programming for the Biological Sciences Bootcamp BE/Bi/NB 203.
Supplementary file
Creators: name: Mazzoni, Gianluca
Publisher: name: figshare
Year: 2020
Subjects: subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences

description: Supplementary file for the paper "Characterization of the Endometrial Transcriptome in Early Diestrus Influencing Pregnancy Establishment in Dairy Cattle after Transfer of In-Vitro Produced Embryos"
Megachile willughbiella
Creators: name: Gérard, Maxence
name: Fiordaliso, William
name: Ferrais, Louise
name: Fournier, Chloé
name: Hairault, Malo
name: Lheureux, Lise
name: Rosa, Paolo
name: Ghisbain, Guillaume
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Megachilidae
Megachile
Megachile willughbiella

description: Megachile willughbiella (Kirby, 1802)
Conservation status
LC
description: Published as part of Gérard, Maxence, Fiordaliso, William, Ferrais, Louise, Fournier, Chloé, Hairault, Malo, Lheureux, Lise, Rosa, Paolo & Ghisbain, Guillaume, 2025, Wild bee diversity of the National Park of the Semois Valley (Belgium), pp. e 144223 in Biodiversity Data Journal 13 on page e144223, DOI: 10.3897/BDJ.13.e144223
Don't Let Me Be Misunderstood: Comparing Intentions and Perceptions in Online Discussions
Creators: name: Chang, Jonathan P.
name: Cheng, Justin
name: Danescu-Niculescu-Mizil, Cristian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Computation and Language (cs.CL)
subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Discourse involves two perspectives: a person's intention in making an utterance and others' perception of that utterance. The misalignment between these perspectives can lead to undesirable outcomes, such as misunderstandings, low productivity and even overt strife. In this work, we present a computational framework for exploring and comparing both perspectives in online public discussions. We combine logged data about public comments on Facebook with a survey of over 16,000 people about their intentions in writing these comments or about their perceptions of comments that others had written. Unlike previous studies of online discussions that have largely relied on third-party labels to quantify properties such as sentiment and subjectivity, our approach also directly captures what the speakers actually intended when writing their comments. In particular, our analysis focuses on judgments of whether a comment is stating a fact or an opinion, since these concepts were shown to be often confused. We show that intentions and perceptions diverge in consequential ways. People are more likely to perceive opinions than to intend them, and linguistic cues that signal how an utterance is intended can differ from those that signal how it will be perceived. Further, this misalignment between intentions and perceptions can be linked to the future health of a conversation: when a comment whose author intended to share a fact is misperceived as sharing an opinion, the subsequent conversation is more likely to derail into uncivil behavior than when the comment is perceived as intended. Altogether, these findings may inform the design of discussion platforms that better promote positive interactions.
description: Proceedings of The Web Conference (WWW) 2020
MHV Vertices and Scattering Amplitudes in Gauge Theory
Creators: name: Wu, Jun-Bao
name: Zhu, Chuan-Jie
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The generic googly amplitudes in gauge theory are computed by using the Cachazo-Svrcek-Witten approach to perturbative calculation in gauge theory and the results are in agreement with the previously well-known ones. Within this approach we also discuss the parity transformation, charge conjugation and the dual Ward identity. We also extend this calculation to include fermions and the googly amplitudes with a single quark-anti-quark pair are obtained correctly from fermionic MHV vertices. At the end we briefly discuss the possible extension of this approach to gravity.
description: Latex file, 38 pages, 15 figures; v2, minor changes, references added; v2, minor changes, 2 references added
A robust principal component analysis for outlier identification in messy microcalorimeter data
Creators: name: Fowler, J. W.
name: Alpert, B. K.
name: Joe, Y. -I.
name: O'Neil, G. C.
name: Swetz, D. S.
name: Ullom, J. N.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A principal component analysis (PCA) of clean microcalorimeter pulse records can be a first step beyond statistically optimal linear filtering of pulses towards a fully non-linear analysis. For PCA to be practical on spectrometers with hundreds of sensors, an automated identification of clean pulses is required. Robust forms of PCA are the subject of active research in machine learning. We examine a version known as coherence pursuit that is simple, fast, and well matched to the automatic identification of outlier records, as needed for microcalorimeter pulse analysis.
description: Accepted in J. Low Temperature Physics
Rayleigh-Benard Convection in Large-Aspect-Ratio Domains
Creators: name: Paul, M. R.
name: Chiam, K-H.
name: Cross, M. C.
name: Fischer, P. F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The coarsening and wavenumber selection of striped states growing from random initial conditions are studied in a non-relaxational, spatially extended, and far-from-equilibrium system by performing large-scale numerical simulations of Rayleigh-Bénard convection in a large-aspect-ratio cylindrical domain with experimentally realistic boundaries. We find evidence that various measures of the coarsening dynamics scale in time with different power-law exponents, indicating that multiple length scales are required in describing the time dependent pattern evolution. The translational correlation length scales with time as $t^{0.12}$, the orientational correlation length scales as $t^{0.54}$, and the density of defects scale as $t^{-0.45}$. The final pattern evolves toward the wavenumber where isolated dislocations become motionless, suggesting a possible wavenumber selection mechanism for large-aspect-ratio convection.
description: 5 pages, 6 figures
title: The experiences and understanding of the menstrual cycle in women with learning disabilities
Creators: name: Ditchfield, Hedy
Publisher: name: The Open University
Year: 2000

description: Background
 During the last 30 years there has been a proliferation of research into the menstrual cycle with particular focus on pre-menstrual syndrome (PMS). The research, however, has not specifically addressed the experiences of women with learning disabilities with regards to the menstrual cycle. The extent to which their experiences resemble those of non-disabled women is therefore not known.

 Aims
The research aimed to compare menstrual cycle change in women with learning disabilities with those of a group of non-disabled women. A further aim was to explore the subjective experiences of women with learning disabilities and to relate the findings to the research evidence pertaining to non-disabled women.

 Design
 The study was cross sectional and employed both within and between groups comparisons. There were two parts to research and both quantitative and qualitative methods were used.

 Method
 Quantitative 34 women with learning disabilities and 50 non-disabled women completed a modified form of the Menstrual Distress Questionnaire (MDQ) regarding changes experienced across the menstrual cycle.
 Qualitative A semi-structured interview was used to explore the views of eleven women with learning disabilities towards the menstrual cycle in general and menstruation in particular.

 Results
 Both groups reported significant changes in mood and behaviour occurring across the menstrual cycle. Between group analysis revealed that control group reported significantly more change in the pre-menstrual phase of the cycle whereas the client group reported more change during menstruation.

 Analysis of the interviews indicated that women with learning disabilities have little knowledge of the menstrual cycle and experience menstruation as a debilitating condition.

 Conclusion
 The focus on PMS in menstrual cycle research does not address the concerns of women with learning disabilities who appear to experience more difficulty with menstruation. The clinical and service implications are discussed and directions for future research suggested.
Impact of Contract Farming and Risk Preference on Food Security: The Case of Organic Basmati Rice Smallholders
Creators: name: Kumar, A.
name: Mishra, A.
name: Joshi, P.
name: D'Souza, A.
name: Kumar, A.
name: Mishra, A.
name: Joshi, P.
name: D'Souza, A.
Publisher: name: Unknown
Year: 2018
Subjects: Food Security and Poverty

description: Demand for organic basmati rice (OBR), both at home and abroad, coupled with policy reforms in India have given rise to contract farming (CF) production in that nation. OBR production, however, is highly susceptible to weather and pest risks. This study investigates the impact of smallholders perceived production risks on their adoption of CF in OBR farming. We also assess the impact of CF in OBR production on yields, prices received, and the livelihood of OBR producers. We use farm-level data from smallholder basmati rice farms in India and the endogenous switching regression method to account for heterogeneity. Although CF in OBR led to lower yields, it increased the prices producers received and improved the livelihood of OBR producers. The impact of CF varied with farmers revealed risk attitudes. Risk-loving OBR growers with CF experienced the highest loss in yields, and risk-averse OBR growers with CF received the highest prices. We find that the OBR growers who did not adopt CF would benefit from adopting it, regardless of their risk attitudes, especially when it comes to prices received and livelihood. Acknowledgement : The project was supported by IFPRI.
Electron-Hole Interference in an Inverted-Band Semiconductor Bilayer
Creators: name: Karalic, Matija
name: Štrkalj, Antonio
name: Masseroni, Michele
name: Chen, Wei
name: Mittag, Christopher
name: Tschirky, Thomas
name: Wegscheider, Werner
name: Ihn, Thomas
name: Ensslin, Klaus
name: Zilberberg, Oded
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electron optics in the solid state promises new functionality in electronics through the possibility of realizing micrometer-sized interferometers, lenses, collimators and beam splitters that manipulate electrons instead of light. Until now, however, such functionality has been demonstrated exclusively in one-dimensional devices, such as in nanotubes, and in graphene-based devices operating with p-n junctions. In this work, we describe a novel mechanism for realizing electron optics in two dimensions. By studying a two-dimensional Fabry-Pérot interferometer based on a resonant cavity formed in an InAs/GaSb double quantum well using p-n junctions, we establish that electron-hole hybridization in band-inverted systems can facilitate coherent interference. With this discovery, we expand the field of electron optics to encompass materials that exhibit band inversion and hybridization, with the promise to surpass the performance of current state-of-the-art devices.
description: 7 pages, 3 figures + supplemental material (24 pages, 14 figures), comments are welcome
POLICY PROGRAMMING FOR MEXICAN AGRICULTURE: Domestic Choices and World Market Conditions
Creators: name: Ballenger, Nicole S.
name: McCalla, Alex F.
name: Ballenger, Nicole S.
name: McCalla, Alex F.
Publisher: name: Unknown
Year: 1986
Subjects: subject: Agricultural and Food Policy
subject: International Development
subject: Agricultural policy
subject: Mexico
subject: mathematical programming

description: This paper presents an agricultural policy model for Mexico. The model can relate the impacts of government pricing policies on production, consumption, and trade, to government objectives for agriculture, like farm employment, net foreign exchange earnings, sector income, and food self-sufficiency. The model's multilevel mathematical programming technique can be used to identify tradeoffs among policy goals and can help policymakers choose the instruments best suited to realizing their goals. The model can also illustrate how changes in world market conditions might alter the tradeoffs and the choice of policy instruments.
Half-inverse spectral problems for Sturm--Liouville operators with singular potentials
Creators: name: Hryniv, Rostyslav O.
name: Mykytyuk, Yaroslav V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Spectral Theory (math.SP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: Primary 34A55, Secondary 34B24, 34L05

description: Half-inverse spectral problem for a Sturm--Liouville operator consists in reconstruction of this operator by its spectrum and half of the potential. We give the necessary and sufficient conditions for solvability of the half-inverse spectral problem for the class of Sturm--Liouville operators with singular potentials from the space $W^{-1}_2(0,1)$ and provide the reconstruction algorithm.
description: 21 pages
Non Gaussian information of heterogeneity in Soft Matter
Creators: name: Dandekar, Rahul
name: Bose, Soumyakanti
name: Dutta, Suman
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Heterogeneity in dynamics in the form of non-Gaussian molecular displacement distributions appears ubiquitously in soft matter. We address the quantification of such heterogeneity using an information-theoretic measure of the distance between the actual displacement distribution and its nearest Gaussian estimation. We explore the usefulness of this measure in two generic scenarios of random walkers in heterogeneous media. We show that our proposed measure leads to a better quantification of non-Gaussianity than the conventional ones based on moment ratios.
COSTS OF PRODUCING MAJOR CROPS, BY STATE AND CROPPING PRACTICE
Creators: name: McElroy, Robert G.
name: McElroy, Robert G.
Publisher: name: Unknown
Year: 1986
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Costs of production
subject: costs
subject: returns

description: State-level cost-of-production estimates are particularly important in extension research. Official USDA estimates at the State level have not been available previously due to conceptual and methodological changes made 3 years ago. The costs and returns in this report are consistent with regional and national weighted averages published each year in Economic Indicators of the Farm Sector: Costs of Production. The estimates are preliminary and subject to Later revision.
Electronic, optical and thermoelectric properties of sodium pnictogen chalcogenides: A first principles study
Creators: name: Khare, I. S.
name: Szymanski, N. J.
name: Gall, D.
name: Irving, R. E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ternary chalcogenides have been of recent investigation for applications in photovoltaic and thermoelectric devices. We study the structural, electronic, optical, and thermoelectric properties of nine ternary chalcogenides, NaAX$_{2}$, where A represents pnictogens (As, Sb, and Te) and X represents chalcogens (S, Se, and Te). Calculations based on density functional theory yield the following results: (i) phonon dispersion curves predict three of the compounds, NaAsS$_{2}$, NaSbS$_{2}$, and NaSbSe$_{2}$, to be dynamically stable in the monoclinic, C2/c, structure, (ii) the layered atomistic configuration causes the corresponding electronic and optical properties to display a high degree of anisotropy, (iii) A-X electronic bonding features vary significantly with structural distortions arising from atomic size mismatch, therefore directly influencing stability, (iv) strong absorption is observed in the stable compounds, with coefficients ranging from 10$^{4}$ to 10$^{5}$ cm$^{-1}$ in the visible-UV range, and (v) remarkably high Seebeck coefficients exceeding 500 $μ$V/K at carrier concentrations commonly achieved in such materials. From these results, we conclude that NaAsS$_{2}$, NaSbS$_{2}$, and NaSbSe$_{2}$ are suitable candidates for both photovoltaic, particularly in tandem solar cells, and thermoelectric applications. Experimental synthesis and verification are suggested.
description: Submitted to Computational Materials Science; 31 pages, 12 figures
Field emission with relativistic effects in a magnetic field
Creators: name: Lebedynskyi, Serhii
name: Kholodov, Roman
Publisher: name: arXiv
Year: 2019
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The work concerns relativistic effects and the influence of an external magnetic field on the transmission coefficient. The Fowler-Nordheim equation has been relativistically generalized and effect of the Lorentz contraction of a potential barrier at the metal-vacuum interface has been found. Influence of the magnetic field parallel to a metal surface on the transmission coefficient is taken into account when cB < E.
Halictus maculatus Smith 1848
Creators: name: Gérard, Maxence
name: Fiordaliso, William
name: Ferrais, Louise
name: Fournier, Chloé
name: Hairault, Malo
name: Lheureux, Lise
name: Rosa, Paolo
name: Ghisbain, Guillaume
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Halictidae
Halictus
Halictus maculatus

description: Halictus maculatus Smith, 1848
Conservation status
VU
description: Published as part of Gérard, Maxence, Fiordaliso, William, Ferrais, Louise, Fournier, Chloé, Hairault, Malo, Lheureux, Lise, Rosa, Paolo & Ghisbain, Guillaume, 2025, Wild bee diversity of the National Park of the Semois Valley (Belgium), pp. e 144223 in Biodiversity Data Journal 13 on page e144223, DOI: 10.3897/BDJ.13.e144223
Partial Derivative Approach for Option Pricing in a Simple Stochastic Volatility Model
Creators: name: Montero, Miquel
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Pricing of Securities (q-fin.PR)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We study a market model in which the volatility of the stock may jump at a random time from a fixed value to another fixed value. This model was already described in the literature. We present a new approach to the problem, based on partial derivative equations, which gives a different perspective to the problem. Within our framework we can easily consider several prescriptions for the market price of volatility risk, and interpret their financial meaning. Thus, we recover solutions previously cited in the literature as well as obtain new ones.
description: 21 pages, 3 figures, submitted for publication
Tissue-engineered hydrogel scaffolds to study bone-tendon interface development
Creators: name: DONDERWINKEL, ILZE
Publisher: name: Monash University
Year: 2022
Subjects: subject: 90301 Biomaterials
subject: FOS: Medical engineering
subject: 100404 Regenerative Medicine (incl. Stem Cells and Tissue Engineering)
subject: FOS: Medical biotechnology

description: This thesis developed a model to study the development of a bone-tendon interface. It identified key players for the generation of an engineered bone-tendon interface that in the future can assist in the clinic for tendon injuries.
Application of multi-group structural equation modelling for investigation of traffic barrier crash severity
Creators: name: Rezapour, Mahdi
name: Ksaibati, Khaled
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: The severity of traffic barrier in the literature has been modelled considering different factors including human, environmental and road/traffic barrier characteristics. However, all these factors are interacting in a complicated way, and a real relationship between these factors is still unclear. A structural equation modelling (SEM) can be adopted to capture the intricate relationships between the contributory factors and latent (unseen) factors. This study was conducted by adopting multi-group SEM to unlock the complicated relationship between confounding factors and traffic barrier crash severity by considering differences across two important groups. Due to the possible difference across different highway systems, multi-group SEM was used instead of standard SEM to account for the differences across highway and interstate roadway system. SEM is a combination of confirmatory and path analysis, which could examine relationship between different observed and latent factors. Besides using factor analysis for identification of latent factors, item/variable cluster analysis was conducted to identify all the latent factors. Although cluster analysis often has been used in other fields, this is the first time this method has been applied in transportation problems for SEM modeling. The inclusion of the factors identified by cluster analysis show an improvement in goodness of fit. This study was conducted to evaluate the traffic barrier crash severity in terms of death, injury and severity of crashes. It examined the nature and causes of severe traffic barrier in Wyoming. The results indicated that different factors contribute to the severity size of traffic barrier crashes including different traffic barrier types, demographic characteristics, weather conditions, and indirect impact of force direction. The results indicated that collision force is a latent factor with highest impact on crash severity compared with other latent factors. Different models with different number of latent were compared based on different goodness-of-fit indices and a best model, with an acceptable model fit, was selected between them. A more discussion about the model presented in the manuscript.
Value-added agriculture: a context for the empowerment of French women farmers?
Creators: name: Annes, Alexis
name: Wright, Wynne
name: Annes, Alexis
name: Wright, Wynne
Publisher: name: Unknown
Year: 712
Subjects: subject: Farm Management
subject: Empowerment
subject: Gender
subject: Rural culture
subject: Value-added agriculture
subject: Women

description: While women’s contributions to French agriculture are increasingly recognized, less clear is whether increasing visibility translates into empowerment opportunities. Using qualitative data drawn from interviews with French value-added farmers with diverse life experiences and trajectories, we examine how women have been able to achieve empowerment and the ways in which value-added agriculture specifically fosters an empowering context. We adopt a conceptualization of empowerment from the development scholarship in order to establish a baseline for scrutiny, viewing empowerment as a multidimensional process constituting the “power to” realize one’s goals, the opportunity to exercise “power with” others and the ability to find and nurture “power within” the self. The findings of this study indicate that through the performance of value-added agriculture, women were able to engage in the process of empowerment. They were able to exercise authority in the daily management of their farm operation, explore and define their own methods of work, to express creativity, satisfy needs for social ties and build a professional identity. However, our results also suggest the persistence of patriarchal and agrarian ideology, undermining the empowerment process. We conclude by discussing the context of empowerment which might mediate this experience for women farmers.
The detailed Fundamental Plane of two high redshift clusters: MS 2053-04 at z=0.58 and MS 1054-03 at z=0.83
Creators: name: Wuyts, Stijn
name: van Dokkum, Pieter G.
name: Kelson, Daniel D.
name: Franx, Marijn
name: Illingworth, Garth D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the fundamental plane relation in high redshift clusters using a sample of 26 galaxies in MS 2053-04 (z=0.583) and 22 galaxies in MS 1054-03 (z=0.83). The zeropoint and scatter are compared to results for lower redshift clusters in order to trace evolutionary effects. Furthermore, our large sample enables us to investigate correlations between residuals from the fundamental plane and other characteristics of the galaxies, such as color, $Hβ$ linestrength, spatial distribution, and mass. The observed scatter of the early-type galaxies with sigma > 100 km/s around the fundamental plane is 0.134 and 0.106 in log r_e for MS 2053-04 and MS 1054-03 respectively. The residuals from the fundamental plane of MS 2053-04 are correlated with residuals from the $Hβ- σ$ relation, suggesting that stellar populations are playing a role in shaping the fundamental plane. The measured evolution in log M/L is influenced by selection effects, as galaxies with lower M/L in the Johnson B-band enter a magnitude-limited sample more easily. When we select high mass early-type galaxies to avoid this bias, we find $\log M/L_B \sim -0.47 z$ and a formation redshift $z_{form} \sim 2.95$, similar to earlier results.
description: 11 pages, 7 figures, accepted for publication in ApJ
Lasioglossum costulatum
Creators: name: Gérard, Maxence
name: Fiordaliso, William
name: Ferrais, Louise
name: Fournier, Chloé
name: Hairault, Malo
name: Lheureux, Lise
name: Rosa, Paolo
name: Ghisbain, Guillaume
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Halictidae
Lasioglossum
Lasioglossum costulatum

description: Lasioglossum costulatum (Kriechbaumer, 1873)
Conservation status
CR
Distribution
Lasioglossum costulatum reaches the septentrional edge of its distribution in Poland and Belgium, extending southwards to Morocco and as far east as Irkutsk (Russia). In Belgium, this species has always been very rare and is now restricted to the Gaume Region (Pauly and Vereecken 2018). Restoring this species’ habitat involves maintaining and expanding forest gaps in order to enhance the abundance and diversity of Campanulaceae (Braun-Reichert et al. 2021).
Notes
This species is mainly observed along forest edges, in thermophilic habitats such as nutrient-poor meadows, quarries and railway embankments - though one of the specimens was also collected on a wet grassland. Nests are constructed in soils rich in sand or loess (Westrich 2018). The Campanulaceae are its preferred source of pollen (Pesenko et al. 2000). However, we observed it on three other plant families, where it may have been foraging for nectar. Although L. costulatum is generally considered solitary, some evidence suggests it may form communal aggregations (Pesenko et al. 2000). Females emerge from diapause in late April, while males begin flying from July onwards (Westrich 2018).
Diagnosis
This species is one of the many Lasioglossum featuring tergites with dark hind margins and a carinate propodeum (Fig. 13). Both males and females can be identified by the hexagonal shape of the posterior face of their propodeum, which features strong parallel wrinkles (Pauly 2015 a).
description: Published as part of Gérard, Maxence, Fiordaliso, William, Ferrais, Louise, Fournier, Chloé, Hairault, Malo, Lheureux, Lise, Rosa, Paolo & Ghisbain, Guillaume, 2025, Wild bee diversity of the National Park of the Semois Valley (Belgium), pp. e 144223 in Biodiversity Data Journal 13 on page e144223, DOI: 10.3897/BDJ.13.e144223
Synthesis, molecular docking, antibacterial, antioxidant, and cytotoxicity activities of novel pyrido-cyclopenta[b]indole analogs
Creators: name: A. Amuthavalli
name: B. Prakash
name: R. Thirugnanasampandan
name: M. Gogulramnath
name: G. Bhuvaneswari
name: R. Velmurugan
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences

description: A series of new pyrido-cyclopenta[1,2-b]indole derivatives were synthesized via Knoevenagel reaction and followed by reflux with dimethylformamide dimethyl acetal. Their structures were investigated by spectral techniques and elemental analysis. In vitro antibacterial assessment against seven selected microorganisms evidenced that the compounds with halogen substituent have strong inhibitory action than that of the reference drugs. The antioxidant results were apparent that the compounds 5b, 5c, and 6c manifested explicit activity when compared with Butylhydroxyanisole and Vitamin-C. Cytotoxic activity analysis toward HeLa and MCF-7 cell lines was also assessed. Analogs 6c (IC50 values 15.1 μM and 18.6 μM) and 6d (IC50 values 17.4 μM and 20.7 μM) illustrated the interesting cytotoxicity activity. Molecular docking studies against p38 MAP kinase displayed a potential binding affinity with the receptor. Furthermore, in silico pharmacokinetic studies articulated the drug-likeness nature of the target compounds.
On the reconstruction of diffusions from first-exit time distributions
Creators: name: Bal, Guillaume
name: Chou, Tom
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This paper explores the reconstruction of drift or diffusion coefficients of a scalar stochastic diffusion processes as it starts from an initial value and reaches, for the first time, a threshold value. We show that the distribution function derived from repeated measurements of the first-exit times can be used to formally partially reconstruct the dynamics of the process. Upon mapping the relevant stochastic differential equations (SDE) to the associated Sturm-Liouville problem, results from Gelfand and Levitan \cite{GelLev-51} can be used to reconstruct the potential of the Schrödinger equation, which is related to the drift and diffusion functionals of the SDE. We show that either the drift or the diffusion term of the stochastic equation can be uniquely reconstructed, but only if both the drift and diffusion are known in at least half of the domain. No other information can be uniquely reconstructed unless additional measurements are provided. Applications and implementations of our results are discussed.
description: Submitted to Inverse Problems
Climate-Conscious Cooling and Heating : Using Life Cycle Assessment to Determine the Carbon Impact of Heating and Cooling System Alternatives at UBC Ponderosa North
Creators: name: Bailey, Cameron
name: Lin, Sarah
name: Liu, Anna
name: Lumsden, Jaya
name: Verrier, Riley
Publisher: name: The University of British Columbia
Year: 2024

description: The Green Building Action Plan at UBC aims to achieve a net positive impact on human and natural systems within the campus buildings. A significant challenge involves reducing the total carbon emissions in the built environment, emphasizing both operational and embodied carbon emitted throughout the building’s life cycle. This project specifically focuses on the heating and cooling systems at UBC Ponderosa North. The carbon impact of Variable Refrigerant Flow (VRF) and Wall-Mounted Heat Pump (WMHP) systems is evaluated and compared using a life cycle assessment approach. By utilizing OpenLCA software and ecoincent 3.8 database, the study compares the global warming potential (GWP) of the WMHP system using R32 refrigerant against the VRF systems using R410A and R32 refrigerants. The results are calculated for a one-year span, showcasing 144,235 kg CO2e for WMHP, 11,606,500 kg CO2e for VRF with R410A, and 4,181,740 kg CO2e for VRF with R32. Ths comparative analysis provides insights into the environmental implications of HVAC choices and refrigerant types, contributing to the improvement of more sustainable building practices at UBC. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Microeconomic analysis of the competitiveness of rice production in Benin
Creators: name: Codjo, Simon Ogoudélé
name: Biaou, Gauthier
name: Fiamohe, Rose
name: Kinkingninhoun, Florent
name: Diagne, Aliou
name: Codjo, Simon Ogoudélé
name: Biaou, Gauthier
name: Fiamohe, Rose
name: Kinkingninhoun, Florent
name: Diagne, Aliou
Publisher: name: Unknown
Year: 1506
Subjects: subject: Land Economics/Use
subject: Competitiveness
subject: Rice
subject: Heterogeneous agent model
subject: Benin

description: This paper aims at analysing the competitiveness of rice production in Benin in 2010. It uses the policy analysis matrix (PAM) as a tool and the heterogeneous agent model. Unlike previous studies, it assesses the competitiveness at the microeconomic level. The data used were collected in Benin from 265 rice farmers selected randomly. The results indicate that rice production is financially profitable for 84.2 % of the farmers and economically profitable for 63.4 % of them. Rice farmers do not have a comparative advantage on average in rice production. However, the analysis of the distribution of domestic resource costs (DRC) indicates that 63.4 % of rice farmers have a comparative advantage in rice production. The effective and nominal protection coefficients indicate that the majority of producers are subsidized. Yield, unit cost of labour and price of fertilizers are the main determinants of the producers’ competitiveness.
Classical and quantum time dependent solutions in string theory
Creators: name: Martínez-Prieto, C.
name: Obregón, O.
name: Socorro, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the ontological interpretation of quantum mechanics in a particular sense, we obtain the classical behaviour of the scale factor and two scalar fields, derived from a string effective action for the FRW time dependent model. Besides, the Wheeler-DeWitt equation is solved exactly. We speculate that the same procedure could also be applied to S-branes.
description: 11 pages, To appear in Int. J. Mod. Phys. A
An explicit unconditionally stable numerical method for solving damped nonlinear Schrödinger equations with a focusing nonlinearity
Creators: name: Bao, Weizhu
name: Jaksch, Dieter
Publisher: name: arXiv
Year: 2003
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: This paper introduces an extension of the time-splitting sine-spectral (TSSP) method for solving damped focusing nonlinear Schrödinger equations (NLS). The method is explicit, unconditionally stable and time transversal invariant. Moreover, it preserves the exact decay rate for the normalization of the wave function if linear damping terms are added to the NLS. Extensive numerical tests are presented for cubic focusing nonlinear Schrödinger equations in 2d with a linear, cubic or a quintic damping term. Our numerical results show that quintic or cubic damping always arrests blowup, while linear damping can arrest blowup only when the damping parameter $\dt$ is larger than a threshold value $\dt_{\rm th}$. We note that our method can also be applied to solve the 3d Gross-Pitaevskii equation with a quintic damping term to model the dynamics of a collapsing and exploding Bose-Einstein condensate (BEC).
description: SIAM Journal on Numerical Analysis, to appear
ISO spectroscopy of star formation and active nuclei in the luminous infrared galaxy NGC 6240
Creators: name: Lutz, D.
name: Sturm, E.
name: Genzel, R.
name: Spoon, H. W. W.
name: Moorwood, A. F. M.
name: Netzer, H.
name: Sternberg, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present Infrared Space Observatory mid- and far-infrared spectroscopy of the merging galaxy NGC 6240, an object presenting many aspects of importance for the role of star formation and AGN activity in [ultra]luminous infrared galaxies. The mid-infrared spectrum shows starburst indicators in the form of low excitation fine-structure line emission and aromatic `PAH' features. A strong high excitation [OIV] line is observed which most likely originates in the Narrow Line Region of an optically obscured AGN. NGC 6240 shows extremely powerful emission in the pure rotational lines of molecular hydrogen. We argue that this emission is mainly due to shocks in its turbulent central gas component and its starburst superwind. The total shock cooling in infrared emission lines accounts for ~0.6% of the bolometric luminosity, mainly through rotational H_2 emission and the [OI] 63micron line. We analyse several ways of estimating the luminosities of the starburst and the AGN in NGC 6240 and suggest that the contributions to its bolometric luminosity are most likely in the range 50-75% starburst and 25-50% AGN.
description: 5 figures. Accepted for publication in A&A
Sphecodes crassus Thomson 1870
Creators: name: Gérard, Maxence
name: Fiordaliso, William
name: Ferrais, Louise
name: Fournier, Chloé
name: Hairault, Malo
name: Lheureux, Lise
name: Rosa, Paolo
name: Ghisbain, Guillaume
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Halictidae
Sphecodes
Sphecodes crassus

description: Sphecodes crassus Thomson, 1870
Conservation status
LC
description: Published as part of Gérard, Maxence, Fiordaliso, William, Ferrais, Louise, Fournier, Chloé, Hairault, Malo, Lheureux, Lise, Rosa, Paolo & Ghisbain, Guillaume, 2025, Wild bee diversity of the National Park of the Semois Valley (Belgium), pp. e 144223 in Biodiversity Data Journal 13 on page e144223, DOI: 10.3897/BDJ.13.e144223
Pulse-driven near-resonant quantum adiabatic dynamics: lifting of quasi-degeneracy
Creators: name: Yatsenko, L. P.
name: Guerin, S.
name: Jauslin, H. R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the quantum dynamics of a two-level system driven by a pulse that starts near-resonant for small amplitudes, yielding nonadiabatic evolution, and induces an adiabatic evolution for larger amplitudes. This problem is analyzed in terms of lifting of degeneracy for rising amplitudes. It is solved exactly for the case of linear and exponential rising. Approximate solutions are given in the case of power law rising. This allows us to determine approximative formulas for the lineshape of resonant excitation by various forms of pulses such as truncated trig-pulses. We also analyze and explain the various superpositions of states that can be obtained by the Half Stark Chirped Rapid Adiabatic Passage (Half-SCRAP) process.
description: 21 pages, 12 figures