cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Invariant generalized complex geometry on maximal flag manifolds and their moduli
Creators: name: Gasparim, Elizabeth
name: Valencia, Fabricio
name: Varea, Carlos
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53D18, 14M15

description: We describe moduli spaces of invariant generalized complex structures and moduli spaces of invariant generalized Kähler structures on maximal flag manifolds under $B$-transformations. We give an alternative description of the moduli space of generalized complex structures using pure spinors, and describe a cell decomposition of these moduli spaces induced by the action of the Weyl group.
description: 29 pages. The title has been changed. Final version to appear in Journal of Geometry and Physics
Efficacy and safety of CDK4/6 and PI3K/AKT/mTOR inhibitors as second-line treatment in postmenopausal patients with hormone receptor-positive, HER-2-negative metastatic breast cancer: a network meta-analysis
Creators: name: Leung, John Hang
name: Leung, Henry W. C.
name: Wang, Shyh-Yau
name: Huang, Song-Shan
name: Chan, Agnes L. F.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Marine Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: We compared the efficacy and safety of combinations of cyclin-dependent kinase 4/6 (CDK4/6) inhibitors and PI3K/AKT/mTOR inhibitors as second-line treatment in postmenopausal women with HR+, HER2− metastatic breast cancer. We searched the Medline, Embase, and Cochrane Library electronic databases for phase II/III randomized trials evaluating CDK4/6 and PI3K/AKT/mTOR inhibitors plus fulvestrant. We compared the results with a network meta-analysis. Study quality was assessed following the GRADE approach. Outcomes of interest were progression-free survival, overall response rate, overall survival and G3–4 adverse drug events (ADEs). Eight RCTs were identified in the network meta-analysis. PFS was significantly improved by treatment with abemaciclib plus fulvestrant and ribociclib plus fulvestrant compared to pictilisib plus fulvestrant. The ORR following treatment with abemaciclib plus fulvestrant, ribociclib plus fulvestrant, palbociclib plus fulvestrant, buparlisib plus fulvestrant, and alpelisib plus fulvestrant significantly differed from that observed following treatment with placebo plus fulvestrant. In terms of OS, compared with placebo plus fulvestrant, abemaciclib plus fulvestrant, ribociclib plus fulvestrant, and buparlisib plus fulvestrant had a significant difference. The risks of ADEs were similar among three CDK4/6 inhibitors. As second-line treatment, three CDK4/6 inhibitors showed superior clinical efficacy compared to other PI3K/AKT/mTOR inhibitors with comparable safety profiles.
Η συμβολή της δημιουργίας πιστοποιημένου δικτύου μονοπατιών στην αειφόρο ανάπτυξη των Αγράφων
Creators: name: Σταμπουλή, Βασιλική Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Δίκτυο μονοπατιών
Άγραφα
Αειφόρος ανάπτυξη
Path network
Agrafa
Sustainable development

description: Στην παρούσα διπλωματική εργασία ερευνάται η συμβολή της δημιουργίας πιστοποιημένου δικτύου μονοπατιών στην αειφόρο ανάπτυξη της περιοχής των Αγράφων. Αρχικά αποσαφηνίζονται βασικές έννοιες και έπειτα παρουσιάζεται το ερευνητικό κομμάτι. Στη συνέχεια, γίνεται ανάλυση της περιοχής των Αγράφων όσον αφορά την τοπογραφία της περιοχής, τις κλιματικές και γεωλογικές συνθήκες που επικρατούν στην περιοχή. Έπειτα γίνεται αναφορά στη χλωρίδα, την πανίδα της περιοχής αλλά και σε σημεία πολιτιστικού, φυσικού και θρησκευτικού ενδιαφέροντος. Η καλύτερη επαφή των ανωτέρω με τον επισκέπτη γίνεται μέσα από την πεζοπορία στα μονοπάτια των Αγράφων και τη διαμονή του σε τοπικά καταφύγια τα οποία παρουσιάζονται αναλυτικά. Στη συνέχεια γίνεται αναφορά στην ιστορία που διέπει τα μονοπάτια, το νομικό πλαίσιο που τα ορίζει, τα σηματοδοτεί, τα πιστοποιεί σε ευρωπαϊκό επίπεδο αλλά και τα χαρακτηρίζει ανάλογα με τον βαθμό δυσκολίας. Ειδικότερα γίνεται περιγραφή και χαρτογραφική απεικόνιση του δικτύου υπαρχόντων μονοπατιών. Τέλος, με βάση τα ανωτέρω αλλά και τη σύγκριση τους με άλλα ευρωπαϊκά μονοπάτια γίνεται SWOT ανάλυση του δικτύου μονοπατιών της περιοχής των Αγράφων με στόχο τη διαμόρφωση προτάσεων για την προβολή και ανάδειξη των διαδρομών των Αγράφων με στόχο τη βελτιστοποίηση τους, την ενίσχυση της οικονομίας και κυρίως την αειφόρο ανάπτυξη.
description: In this master thesis, the contribution of the creation of a certified path network to the sustainable development of the Agrafa area is investigated. First, basic terms are clarified and then the research part is presented. Next, the Agrafa area is analyzed in terms of the topography of the area, the climatic and geological conditions that prevail in the area. Then there is a reference to the flora and fauna of the area as well as points of cultural, natural and religious interest. The best contact of the above with the visitor is through hiking on the paths of Agrafa and staying in local shelters which are presented in detail. Then there is a reference to the history of the paths, the legal framework that defines them, marks them, certifies them at the European level but also characterizes them according to the degree of difficulty. In particular, a description and cartographic illustration of the network of existing paths is made. Finally, based on the above and their comparison with other European paths, a SWOT analysis of the network of paths in the Agrafa region is carried out with the aim of formulating proposals for the promotion of the Agrafa routes with the aim of optimizing them, strengthening the economy and above all aims at the sustainable development of the area.
Participation of immigrant and non-immigrant youth in the City of Calgary
Creators: name: Afatsawo, Christopher Komlavi
Publisher: name: Education
Year: 2004

description: Bibliography: p. 137-142
description: Today, participation at all levels of society or community among Canadians appears elusive. More people appear to be disengaged in community affairs, and governments are concerned by lack of participation. Specifically, participation of youth in cities has become a concern since the well being of societies is dependent upon the civic engagement of its youth. In this context, I explore participation among immigrant and non-immigrant youth in the city of Calgary in order to understand the levels and patterns of participation among them. Mixing quantitative and qualitative paradigms, two sets of data are used in this study: a survey questionnaire administered to (N=811) high school students and follow-up interviews with (N=I5) participants. Emerging patterns from both data sets are interpreted from a critical perspective. The quantitative findings suggest that youth's level of participation in social and community activities is low. The qualitative data on the other hand suggest that youth's level of participation is not necessarily low. Instead, the level of participation varies tremendously.
Plasmoid ejection and secondary current sheet generation from magnetic reconnection in laser-plasma interaction
Creators: name: Dong, Quan-Li
name: Wang, Shou-Jun
name: Lu, Quan-Ming
name: Huang, Can
name: Yuan, Da-Wei
name: Liu, Xun
name: Li, Yu-Tong
name: Lin, Xiao-Xuan
name: Wei, Hui-Gang
name: Zhong, Jia-Yong
name: Shi, Jian-Rong
name: Jiang, Shao-En
name: Ding, Yong-Kun
name: Jiang, Bo-Bin
name: Du, Kai
name: He, Xian-Tu
name: Yu, M. Y.
name: Liu, C. S.
name: Wang, Shui
name: Tang, Yong-Jian
name: Zhu, Jian-Qiang
name: Zhao, Gang
name: Sheng, Zheng-Ming
name: Zhang, Jie
Publisher: name: arXiv
Year: 2012
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Reconnection of the self-generated magnetic fields in laser-plasma interaction was first investigated experimentally by Nilson {\it et al.} [Phys. Rev. Lett. 97, 255001 (2006)] by shining two laser pulses a distance apart on a solid target layer. An elongated current sheet (CS) was observed in the plasma between the two laser spots. In order to more closely model magnetotail reconnection, here two side-by-side thin target layers, instead of a single one, are used. It is found that at one end of the elongated CS a fan-like electron outflow region including three well-collimated electron jets appears. The ($>1$ MeV) tail of the jet energy distribution exhibits a power-law scaling. The enhanced electron acceleration is attributed to the intense inductive electric field in the narrow electron dominated reconnection region, as well as additional acceleration as they are trapped inside the rapidly moving plasmoid formed in and ejected from the CS. The ejection also induces a secondary CS.
Learning to listen: cochlear implant children in a preschool setting
Creators: name: Coulson, Marie
Publisher: name: Education
Year: 2004

description: Bibliography: p. 193-195
description: Some pages are in colour.
description: The intent of this qualitative study is to describe and reflect upon the lived experience of three profoundly deaf young children; each using a cochlear implant system, who are enrolled in an inclusive early childhood program. Using the paradigm of hermeneutic phenomenology, this study seeks to shed light upon the role of listening; the role of teaching, the role of comfort and care in a particular setting with these three particular children. It is a study of how these children interacted within the setting. It explores practices which, in this situation, required adjustment as well as those practices which brought empowerment. It explores aspects of historical issues which still impinge upon deaf children using a cochlear implant system. It is a study of a situation which can never be fully repeated, but can be captured to some extent through careful reflection.
Effect of processing variables on physico – chemical properties of Basmati rice – pigeonpea extrudates
Creators: name: Teraiya, Rajay Jayantilal
Publisher: name: No Publisher Supplied
Year: 2012

description: Extrusion of pigeonpea and Basmati rice was carried out to find out if there are optimum extrusion conditions in terms of the processing variables that give desirable physico –chemical properties to extrudates. Pigeonpea is a nutritionallydense legume. Because extrusion canproduce low moisture and long shelf life products, itwouldbe useful to make pigeonpeaavailable to wider market.High protein contentof pigeonpeamay limit its use asan extrudable materialbecause high proteinsconcentrationusually curtailsexpansion. Basmati rice, being a traditional supplement and rich in starch,can provide an aid for expansionwhen mixed with pigeon pea flour. A Brabender single screw extruder was employed for the extrusionof Basmati rice and pigeonpea flour mixture. Four factors of importance chosen for this studywere: ratio of whole pigeonpea to Basmati rice (25% to 75%), barreltemperature(120°C-160°C), moisture content (19-24%),and screw speed (120-180RPM). Response surface methodology (central composite design, CCD) was first used to design experiments.Based on results of the CCD design,a three factor Box-Behnken design(BBD)was employed which focused on the impact of three major parameters, namely, the temperature of the barrel (120°C-160°C), the moisture content (19-24%) and the screw speed (120-180 RPM)on extrudate properties. The fraction of pigeonpea in the mixture that could provide acceptable exapanded product with sufficient amount of protein was 0.5 or 50%. The processability was not significantly affected up to 50% pigeonpea in the mixture. Theparticle size distribution (PSD) hadsignificant effect on the physico-chemical properties of extrudate. Moisture content of the finished product was inversely proportional to the barrel temperature. An increase in temperature and/or screw speed caused a decrease in bulk density of the extrudate.Water solubility index (WSI) and water absorption index (WAI) increased with increase in barrel temperature. WSI was also influenced by fraction of pigeonpea in the mixture with a positive correlation. An increase in the screw speed reduced the brown color and increased the brightness of the extrudate to some extent.
Domain wall dynamics in classical spin chains: free propagation, subdiffusive spreading, and soliton emission
Creators: name: McRoberts, Adam J.
name: Bilitewski, Thomas
name: Haque, Masudul
name: Moessner, Roderich
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The non-equilibrium dynamics of domain wall initial states in a classical anisotropic Heisenberg chain exhibits a striking coexistence of apparently linear and non-linear behaviours: the propagation and spreading of the domain wall can be captured quantitatively by \textit{linear}, i.e. non-interacting, spin wave theory absent its usual justifications; while, simultaneously, for a wide range of easy-plane anisotropies, emission can take place of stable topological solitons -- a process and objects intrinsically associated with interactions and non-linearities. The easy-axis domain wall only has transient dynamics, the isotropic one broadens diffusively, while the easy-plane one yields a pair of ballistically counter-propagating domain walls which, unusually, broaden \textit{subdiffusively}, their width scaling as $t^{1/3}$.
description: 4 + 4 pages
Low-dimensional firing-rate dynamics for populations of renewal-type spiking neurons
Creators: name: Pietras, Bastian
name: Gallice, Noé
name: Schwalger, Tilo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: The macroscopic dynamics of large populations of neurons can be mathematically analyzed using low-dimensional firing-rate or neural-mass models. However, these models fail to capture spike synchronization effects of stochastic spiking neurons such as the non-stationary population response to rapidly changing stimuli. Here, we derive low-dimensional firing-rate models for homogeneous populations of general renewal-type neurons, including integrate-and-fire models driven by white noise. Renewal models account for neuronal refractoriness and spike synchronization dynamics. The derivation is based on an eigenmode expansion of the associated refractory density equation, which generalizes previous spectral methods for Fokker-Planck equations to arbitrary renewal models. We find a simple relation between the eigenvalues, which determine the characteristic time scales of the firing rate dynamics, and the Laplace transform of the interspike interval density or the survival function of the renewal process. Analytical expressions for the Laplace transforms are readily available for many renewal models including the leaky integrate-and-fire model. Retaining only the first eigenmode yields already an adequate low-dimensional approximation of the firing-rate dynamics that captures spike synchronization effects and fast transient dynamics at stimulus onset. We explicitly demonstrate the validity of our model for a large homogeneous population of Poisson neurons with absolute refractoriness, and other renewal models that admit an explicit analytical calculation of the eigenvalues. The here presented eigenmode expansion provides a systematic framework for novel firing-rate models in computational neuroscience based on spiking neuron dynamics with refractoriness.
description: 24 pages, 7 figures
Incorporation of curcumin in lipid based delivery systems and assessment of its bioaccessibility
Creators: name: Solanki, Kavitakumari
Publisher: name: No Publisher Supplied
Year: 2012

description: Curcumin, the major curcuminoid compound from turmeric (Curcuma longa) is a well-studied nutraceutical with many health promoting biological properties. The benefits of curcumin greatly dependon its solubilization (bioaccessibility) and subsequent absorption through cell lining so that it can reach systemic/general circulation. Unfortunately, curcumin has low water solubility and undergoes rapid metabolism on oral delivery. Lipids have shown to affect the absorption of poorly soluble nutraceuticals such as curcumin by enhancing solubilization in the intestinal milieu through alterations to the composition and character of the colloidal environment –e.g. vesicles, mixed micelles and micelles when delivered orally. Thus, the purpose ofthis study was to formulate threelipid-based delivery systems with curcuminoids –gel like emulsions, nanoemulsions andorganogels, and investigate their impact on in vitro solubilization or bioaccessibility. Curcumin was dissolved in MC T oil with the help of Span 20 to be used as the lipid phase. Gel-like emulsions, nanoemulsions andorganogelswere then formulated using the curcumin-MCT oil lipid phase using different types of sugar esters as organogelators and emulsifiers. The organogels and gel-like emulsions are viscoelastic in naturewith a solid dominant behaviorwhich was supported by the rheological data. Optical and fluorescence microscopic imaging helped understand the morphology ofcurcumin inthe lipidbased delivery systemsas well as the systems themselves. Digital scanning calorimetry was used to study the phase transitionsthat occurin the systems. The bioaccessibilityof the different lipid based delivery systemswas evaluated using in vitrolipolysis experiments (dynamic pH stat lipid digestion model). Results suggest that lipid based delivery systems have more bioaccessibility when compared to that of unformulated curcuminoids. The bioaccessibility of curcumin increased at least 6.4 folds when it was incorporated in a lipid based delivery system as compared to unformulated curcuminoids.O ut of the three systems tested, gel-like emulsions had the highest stability and thus can be good candidate for incorporation and delivery of curcumin.
An Adaptation of "Plants in the Human-Altered Environment (PHAE)" for 100% Remote Learning at East Stroudsburg University
Creators: name: Rollinson, Emily
Publisher: name: QUBES Educational Resources
Year: 2020

description: PHAE is a project to compare effects of landscape alteration intensities on plant diversity. This adaptation modified and extends the modules to suit fully remote learning (data collected independently by each student with minimal equipment).
iGrid - Smart Grid Capacity Development and Enhancement in Tanzania
Creators: name: Kondoro, Aron
Publisher: name: Sci-GaIA Open Access Repository
Year: 1985

description: Use case  to design, implement, demonstrate, test and validate  an autonomous solar-powered LVDC nanogrid prototype, serving an off-grid community of 10-100 households that can also be integrated in a higher voltage AC/DC grid if needed, as part of of a bigger strategy to ensure access to reliable and affordable electrical power supply to all communities. (especially rural). Presentation done on Summer Hackfest at Catania,Italy on 6/7/2016
Turning in the landscape: a new mechanism for generating Primordial Black Holes
Creators: name: Fumagalli, Jacopo
name: Renaux-Petel, Sébastien
name: Ronayne, John W.
name: Witkowski, Lukas T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose a new model-independent mechanism for producing primordial black holes from a period of multi-field inflation. This requires an enhancement of primordial fluctuations at short scales compared to their value at CMB scales. We show that such an amplification naturally occurs when the inflationary trajectory exhibits a strong turn, that is a limited period during which the trajectory strongly deviates from a geodesic in field space, and is sufficient for subsequently producing primordial black holes with the abundance to be all or a fraction of dark matter. Our mechanism is generic to models of inflation realized in a multi-dimensional field space with an overlying potential and geometry, also referred to as the inflationary landscape, as arises in embeddings of inflation in high-energy theories. We study analytically and numerically how the duration and the strength of the turn impact the primordial fluctuation power spectrum and the abundance of primordial black holes. Our mechanism has the potential of exhibiting unique features accessible to observation through the primordial black hole spectrum and the stochastic background of gravitational waves, offering a precious glimpse at the dynamics of inflation.
description: 9 pages, 7 figures. v3: comparison of enhancement mechanism with mild waterfall phase of hybrid inflation added, new appendix on oscillations in power spectrum from moderately sharp features
Ballistic transport properties across nonuniform strain barriers in graphene
Creators: name: Pellegrino, F. M. D.
name: Angilella, G. G. N.
name: Pucci, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the effect of uniaxial strain on the transmission and the conductivity across a strain-induced barrier in graphene. At variance with conventional studies, which consider sharp barriers, we consider a more realistic, smooth barrier, characterized by a nonuniform, continuous strain profile. Our results are instrumental towards a better understanding of the transport properties in corrugated graphene.
description: High Press. Res., to appear
Efficacy and safety of CDK4/6 and PI3K/AKT/mTOR inhibitors as second-line treatment in postmenopausal patients with hormone receptor-positive, HER-2-negative metastatic breast cancer: a network meta-analysis
Creators: name: Leung, John Hang
name: Leung, Henry WC
name: Wang, Shyh-Yau
name: Huang, Song-Shan
name: Chan, Agnes LF
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Marine Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: We compared the efficacy and safety of combinations of cyclin-dependent kinase 4/6 (CDK4/6) inhibitors and PI3K/AKT/mTOR inhibitors as second-line treatment in postmenopausal women with HR+, HER2− metastatic breast cancer. We searched the Medline, Embase, and Cochrane Library electronic databases for phase II/III randomized trials evaluating CDK4/6 and PI3K/AKT/mTOR inhibitors plus fulvestrant. We compared the results with a network meta-analysis. Study quality was assessed following the GRADE approach. Outcomes of interest were progression-free survival, overall response rate, overall survival and G3–4 adverse drug events (ADEs). Eight RCTs were identified in the network meta-analysis. PFS was significantly improved by treatment with abemaciclib plus fulvestrant and ribociclib plus fulvestrant compared to pictilisib plus fulvestrant. The ORR following treatment with abemaciclib plus fulvestrant, ribociclib plus fulvestrant, palbociclib plus fulvestrant, buparlisib plus fulvestrant, and alpelisib plus fulvestrant significantly differed from that observed following treatment with placebo plus fulvestrant. In terms of OS, compared with placebo plus fulvestrant, abemaciclib plus fulvestrant, ribociclib plus fulvestrant, and buparlisib plus fulvestrant had a significant difference. The risks of ADEs were similar among three CDK4/6 inhibitors. As second-line treatment, three CDK4/6 inhibitors showed superior clinical efficacy compared to other PI3K/AKT/mTOR inhibitors with comparable safety profiles.
Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud
Creators: name: Adrich, P.
name: Blumer, P.
name: Caratsch, G.
name: Chung, M.
name: Cladé, P.
name: Comini, P.
name: Crivelli, P.
name: Dalkarov, O.
name: Debu, P.
name: Douillet, A.
name: Drapier, D.
name: Froelich, P.
name: Garroum, N.
name: Guellati-Khelifa, S.
name: Guyomard, J.
name: Hervieux, P-A.
name: Hilico, L.
name: Indelicato, P.
name: Jonsell, S.
name: Karr, J-P.
name: Kim, B.
name: Kim, S.
name: Kim, E-S.
name: Ko, Y. J.
name: Kosinski, T.
name: Kuroda, N.
name: Latacz, B. M.
name: Lee, B.
name: Lee, H.
name: Lee, J.
name: Lim, E.
name: Liszkay, L.
name: Lunney, D.
name: Manfredi, G.
name: Mansoulié, B.
name: Matusiak, M.
name: Nesvizhevsky, V.
name: Nez, F.
name: Niang, S.
name: Ohayon, B.
name: Park, K.
name: Paul, N.
name: Pérez, P.
name: Regenfus, C.
name: Reynaud, S.
name: Roumegou, C.
name: Roussé, J-Y.
name: Sacquin, Y.
name: Sadowski, G.
name: Sarkisyan, J.
name: Sato, M.
name: Schmidt-Kaler, F.
name: Staszczak, M.
name: Szymczyk, K.
name: Tanaka, T. A.
name: Tuchming, B.
name: Vallage, B.
name: Voronin, A.
name: van der Werf, D. P.
name: Won, D.
name: Wronka, S.
name: Yamazaki, Y.
name: Yoo, K-H.
name: Yzombard, P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We report on the first production of an antihydrogen beam by charge exchange of 6.1 keV antiprotons with a cloud of positronium in the GBAR experiment at CERN. The antiproton beam was delivered by the AD/ELENA facility. The positronium target was produced from a positron beam itself obtained from an electron linear accelerator. We observe an excess over background indicating antihydrogen production with a significance of 3-4 standard deviations.
Enhanced diffusivity and skewness of a diffusing tracer in the presence of an oscillating wall
Creators: name: Ding, Lingyun
name: Hunt, Robert
name: Woodie, Hunter
name: McLaughlin, Richard M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82C70, 82C80, 34E13, 76R50

description: We develop a theory of enhanced diffusivity and skewness of the longitudinal distribution of a diffusing tracer advected by a periodic time-varying shear flow in a straight channel. Although applicable to general fluid flow, we restrict the examples of our theory to the tracer advected by flows that are induced by a periodically oscillating wall in a Newtonian fluid between two infinite parallel plates as well as flow in an infinitely long duct. We first derived the formula of the flow produced by the wall motions. Second, we calculate the second Aris moment for all time and its long-time limiting effective diffusivity as a function of the geometrical parameters, frequency, viscosity, and diffusivity. Using a new formalism based upon the Helmholtz operator we establish a new single series formula for the variance. We show that the viscous-dominated limit results in a linear shear layer for which the effective diffusivity is bounded. For finite viscosities, the enhanced diffusion diverges in the high-frequency limit. We present a study of the effective diffusivity surface as a function of the non-dimensional parameters which shows how a maximum can exist for various parameter sweeps. Physical experiments are performed in water using particle tracking velocimetry to quantitatively measure the fluid flow. Using fluorescein dye as the passive tracer, we document that the theory is quantitatively accurate. Specifically, image analysis suggests that the distribution variance be measured using the full width at half maximum is robust to noise. Further, we show that the scalar skewness is zero for linear shear flows at all times, whereas for the nonlinear Stokes layer, the skewness sign can be controlled through the oscillating phase. Last, for single-frequency wall motion, the long-time skewness decays at the faster rate as compared with the case with steady flow.
Leia arcana Chandler, Belqat & Driauach 2024
Creators: name: El Mouden, Mohamed Amin
name: Chandler, Peter J.
name: Saidoun, Imane
name: Driauach, Ouafaa
name: Belqat, Boutaïna
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Mycetophilidae
Leia
Leia arcana

description: Leia arcana Chandler, Belqat & Driauach, 2024
Material examined.
Morocco – Middle Atlas Region • 1 ♂; Forêt gouffre Friouato; 19/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2426 • 7 ♂♂; Gouffre Izora; 19/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2427 • 31 ♂♂; Grotte Bouslama; 19/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2428 • 1 ♂; Ruisselet Ras Lma; 19/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2429 • 4 ♂♂; Vallée des oiseaux; 19/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2430 • 1 ♂; Village Bab Boudir; 19/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2431 • 3 ♂♂; Forêt Bab Boudir; 20/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2425 • 3 ♂♂; Grotte Bouhayati; 20/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2432 • 10 ♂♂; Oued Aïn Chabab; 20/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2433 • 9 ♂♂; Oued Taourirt; 20/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2434 • 1 ♂; Aïn Admam; 22/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2435 • 3 ♂♂; Forêt Admam; 22/V/2022; K. Aattouch, M. El Ouahabi and M. A. El Mouden leg; UAE-FST MA 22/2436.
North African distribution.
Morocco (El Mouden et al. 2024).
description: Published as part of El Mouden, Mohamed Amin, Chandler, Peter J., Saidoun, Imane, Driauach, Ouafaa & Belqat, Boutaïna, 2025, A new species of Docosia Winnertz, 1864 and new records of fungus gnats (Diptera, Bolitophilidae, Keroplatidae and Mycetophilidae) from North Africa, pp. 349-379 in ZooKeys 1233 on pages 349-379, DOI: 10.3897/zookeys.1233.130502
The many faces of the stochastic zeta function
Creators: name: Valkó, Benedek
name: Virág, Bálint
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We introduce a framework to study the random entire function $ζ_β$ whose zeros are given by the Sine$_β$ process, the bulk limit of beta ensembles. We present several equivalent characterizations, including an explicit power series representation built from Brownian motion. We study related distributions using stochastic differential equations. Our function is a uniform limit of characteristic polynomials in the circular beta ensemble; we give upper bounds on the rate of convergence. Most of our results are new even for classical values of $β$. We provide explicit moment formulas for $ζ$ and its variants, and we show that the Borodin-Strahov moment formulas hold for all $β$ both in the limit and for circular beta ensembles. We show a uniqueness theorem for $ζ$ in the Cartwright class, and deduce some product identities between conjugate values of $β$. The proofs rely on the structure of the Sine$_β$ operator to express $ζ$ in terms of a regularized determinant.
description: 71 pages, no figures
Heightened sensitivity of gifted students: an exploratory multiple case study
Creators: name: Dodd, Annie
Publisher: name: Education
Year: 2004

description: Bibliography: p. 135-142
description: With a particular interest in the affective characteristics, especially the heightened sensitivity of gifted children, the researcher reviewed the literature in the area. She found a consensus among the theoretical, prescriptive and anecdotal literary works that heightened sensitivity is characteristic of gifted students; however, there was virtually no empirical research available. Therefore, the researcher endeavoured to explore the phenomenon by interviewing gifted children, their respective teacher and parents to access the lived experience. The themes that emerged from the interviews and relevant documents within the students' cumulative files concur with the notions of heightened sensitivity as found in the literature. Literature in the area of giftedness formed the basis of this study for heightened sensitivity, with reference to Mendaglio's (2003) model of HMS (Heightened Multifaceted Sensitivity) to make sense of the findings. A qualitative, exploratory multiple case study design was selected to determine whether the affective characteristics, especially heightened sensitivity, as found in the literature, can be documented in younger gifted children and to discern whether heightened sensitivity is a distinguishing attribute of gifted children.
title: Tele-Coupling Energy Efficiency Polices in Europe: Showcasing the German Governance Arrangements
Creators: name: Ringel, Marc
Publisher: name: MDPI
Year: 2023

description: Climate change entails many situations of tele-coupling. We analyze an example in the field of European climate and energy policy. The EU aims at an almost full decarbonisation of its economy by 2050. Achieving this objective asks for transforming the energy sectors of EU Member States. These are responsible for 80% of carbon emissions. Further to this policy coupling, the EU transformation objectives have to be implemented by the Member States, regions and local actors. This proves especially complex in the field of energy efficiency. Here, a variety of policy instruments and actors are in place. In our contribution, we investigate in the question how multi-level governance arrangements in the energy efficiency field are designed. We focus on Germany as example for a federal state setting. Our review method comprises literature content analysis, primary sources, expert interviews and an in-depth screening of the German Sustainable Energy Action Plans. We find that formal vertical coordination has been successfully backed up by horizontal and especially informal governance mechanisms, leading to a model of polycentric governance. This model might serve as blueprint for other multi-level governance arrangements. Yet, we find that the “last mile” of this coordination still needs strengthening: Local actors need more active engaging and empowering to reap the full potential of the governance arrangements.
Aggregation and constraint processing in lifted probabilistic inference
Creators: name: Kisynski, Jacek Jerzy
Publisher: name: University of British Columbia
Year: 2010

description: Representations that mix graphical models and first-order logic - called either first-order or relational probabilistic models — were proposed nearly twenty years ago and many more have since emerged. In these models, random variables are parameterized by logical variables. One way to perform inference in first-order models is to propositionalize the model, that is, to explicitly consider every element from the domains of logical variables. This approach might be intractable even for simple first-order models. The idea behind lifted inference is to carry out as much inference as possible without propositionalizing. An exact lifted inference procedure for first-order probabilistic models was developed by Poole [2003] and later extended to a broader range of problems by de Salvo Braz et al. [2007]. The C-FOVE algorithm by Milch et al. [2008] expanded the scope of lifted inference and is currently the state of the art in exact lifted inference. In this thesis we address two problems related to lifted inference: aggregation in directed first-order probabilistic models and constraint processing during lifted inference. Recent work on exact lifted inference focused on undirected models. Directed first-order probabilistic models require an aggregation operator when a parent random variable is parameterized by logical variables that are not present in a child random variable. We introduce a new data structure, aggregation parfactors, to describe aggregation in directed first-order models. We show how to extend the C-FOVE algorithm to perform lifted inference in the presence of aggregation parfactors. There are cases where the polynomial time complexity (in the domain size of logical variables) of the C-FOVE algorithm can be reduced to logarithmic time complexity using aggregation parfactors. First-order models typically contain constraints on logical variables. Constraints are important for capturing knowledge regarding particular individuals. However, the impact of constraint processing on computational efficiency of lifted inference has been largely overlooked. In this thesis we develop an efficient algorithm for counting the number of solutions to the constraint satisfaction problems encountered during lifted inference. We also compare, both theoretically and empirically, different ways of handling constraints during lifted inference.
Thermodynamics of Water Entry in Hydrophobic Channels of Carbon Nanotubes
Creators: name: Kumar, Hemant
name: Mukherjee, Biswaroop
name: Dasgupta, Shiang-Tai Lin Chandan
name: Sood, A. K.
name: Maiti, Prabal K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Experiments and computer simulations demonstrate that water spontaneously fills the hydrophobic cavity of a carbon nanotube. To gain a quantitative thermody- namic understanding of this phenomenon, we use the recently developed Two Phase Thermodynamics (2PT) method to compute translational and rotational entropies of confined water molecules inside single-walled carbon nanotubes and show that the increase in energy of a water molecule inside the nanotube is compensated by the gain in its rotational entropy. The confined water is in equilibrium with the bulk wa- ter and the Helmholtz free energy per water molecule of confined water is the same as that in the bulk within the accuracy of the simulation results. A comparison of translational and rotational spectra of water molecules confined in carbon nanotubes with that of bulk water shows significant shifts in the positions of the spectral peaks that are directly related to the tube radius.
description: 18 pages, 7 figures
Structure and Performance of Grocery Products Brokers
Creators: name: Stafford, Thomas H.
name: Grinnell, Gerald E.
name: Stafford, Thomas H.
name: Grinnell, Gerald E.
Publisher: name: Unknown
Year: 1982
Subjects: subject: Agribusiness
subject: Industrial Organization
subject: Production Economics
subject: Brokers
subject: Food brokers
subject: Grocery products
subject: Wholesalers
subject: Wholesale trade
subject: Economies of size

description: The grocery products brokerage industry is generally competitive. Concentration is low in segments of the industry that primarily sell in local markets and high for brokers who sell nationally. Entry into the industry is not restricted and other types of wholesalers account for a large share of sales in the more concentrated industry segments. Brokers have been losing business to manufacturers' sales offices, and this trend could continue. Operating expenses and commission rates, which are highly correlated, vary with the type of products handled and establishment size. Large operations have the lowest rates, on average.
Virial expansion with Feynman diagrams
Creators: name: Leyronas, Xavier
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a field theoretic method for the calculation of the second and third virial coefficients b2 and b3 of 2-species fermions interacting via a contact interaction. The method is mostly analytic. We find a closed expression for b3 in terms of the 2 and 3-body T-matrices. We recover numerically, at unitarity, and also in the whole BEC-BCS crossover, previous numerical results for the third virial coefficient b3.
Surgical Phase and Instrument Recognition: How to identify appropriate Dataset Splits
Creators: name: Kostiuchik, Georgii
name: Sharan, Lalith
name: Mayer, Benedikt
name: Wolf, Ivo
name: Preim, Bernhard
name: Engelhardt, Sandy
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Purpose: Machine learning models can only be reliably evaluated if training, validation, and test data splits are representative and not affected by the absence of classes of interest. Surgical workflow and instrument recognition tasks are complicated in this manner, because of heavy data imbalances resulting from different lengths of phases and their erratic occurrences. Furthermore, the issue becomes difficult as sub-properties that help define phases, like instrument (co-)occurrence, are usually not considered when defining the split. We argue that such sub-properties must be equally considered.
 Methods: This work presents a publicly available data visualization tool that enables interactive exploration of dataset splits for surgical phase and instrument recognition. It focuses on the visualization of the occurrence of phases, phase transitions, instruments, and instrument combinations across sets. Particularly, it facilitates the assessment and identification of sub-optimal dataset splits.
 Results: We performed an analysis of common Cholec80 dataset splits using the proposed application and were able to uncover phase transitions and combinations of instruments that were not represented in one of the sets. Additionally, we outlined possible improvements to the splits. A user study with ten participants demonstrated the ability of participants to solve a selection of data exploration tasks using the proposed application.
 Conclusion: In highly unbalanced class distributions, special care should be taken with respect to the selection of an appropriate dataset split. Our interactive data visualization tool presents a promising approach for the assessment of dataset splits for surgical phase and instrument recognition. Evaluation results show that it can enhance the development of machine learning models. The application is available at https://cardio-ai.github.io/endovis-ml/ .
description: Accepted at IPCAI 2023 as long abstract; Submitted to IJCARS as original article; 21 pages, 10 figures, 3 tables
Stability of nodal structures in graph eigenfunctions and its relation to the nodal domain count
Creators: name: Berkolaiko, Gregory
name: Raz, Hillel
name: Smilansky, Uzy
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The nodal domains of eigenvectors of the discrete Schrodinger operator on simple, finite and connected graphs are considered. Courant's well known nodal domain theorem applies in the present case, and sets an upper bound to the number of nodal domains of eigenvectors: Arranging the spectrum as a non decreasing sequence, and denoting by $ν_n$ the number of nodal domains of the $n$'th eigenvector, Courant's theorem guarantees that the nodal deficiency $n-ν_n$ is non negative. (The above applies for generic eigenvectors. Special care should be exercised for eigenvectors with vanishing components.) The main result of the present work is that the nodal deficiency for generic eigenvectors equals to a Morse index of an energy functional whose value at its relevant critical points coincides with the eigenvalue. The association of the nodal deficiency to the stability of an energy functional at its critical points was recently discussed in the context of quantum graphs [arXiv:1103.1423] and Dirichlet Laplacian in bounded domains in $R^d$ [arXiv:1107.3489]. The present work adapts this result to the discrete case. The definition of the energy functional in the discrete case requires a special setting, substantially different from the one used in [arXiv:1103.1423,arXiv:1107.3489] and it is presented here in detail.
description: 15 pages, 1 figure
Fractal zeta functions of orbits of parabolic diffeomorphisms
Creators: name: Mardešić, Pavao
name: Radunović, Goran
name: Resman, Maja
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 11M41, 28A75, 28A80, 37C05, 37C15, 44A15, 37C25

description: In this paper, we prove that fractal zeta functions of orbits of parabolic germs of diffeomorphisms can be meromorphically extended to the whole complex plane. We describe their set of poles (i.e. their complex dimensions) and their principal parts which can be understood as their fractal footprint. We study the fractal footprint of one orbit of a parabolic germ f and extract intrinsic information about the germ f from it, in particular, its formal class. Moreover, we relate complex dimensions to the generalized asymptotic expansion of the tube function of orbits with oscillatory "coefficients" as well as to the asymptotic expansion of their dynamically regularized tube function. Interestingly, parabolic orbits provide a first example of sets that have nontrivial Minkowski (or box) dimension and their tube function possesses higher order oscillatory terms, however, they do not posses non-real complex dimensions and are therefore not called fractal in the sense of Lapidus.
description: 61 pages, corrected typos and a minor mistake in the proof of Proposition 4.2
Search for multi-lepton events from strong and electroweak SUSY production in pp collisions at a [center-of-mass energy] of 7 TeV
Creators: name: Thomassen, Peter
Publisher: name: No Publisher Supplied
Year: 2012

description: We present a search for the production of three or more isolated leptons in proton–proton collision data at√s=7TeV, corresponding to an integrated luminosity of4.98fb−1, that was collected by the CMS detector during the 2011 LHC run. Thepossible final states are classified according to a number of physical properties toproperly account for varying Standard Model backgrounds and signal yields. Several super symmetric (SUSY) models that yield multi-lepton events are investigated, andmass exclusions along with cross-section upper limits are presented for anR-parityconserving co-NLSP model, anR-parity violating model (both from strong SUSY pro-duction) as well as for several SUSY topologies that lead to electroweak pair productionof charginos and neutralinos which then decay to multi-lepton final states. No new physics was observed.
Honour song: Native graduates voice success
Creators: name: Dobson, Margaret A.E.
Publisher: name: Education
Year: 2004

description: Bibliography: p. 244-253
description: The success achieved in university by Aboriginal graduates is the subject of this qualitative study. The increasing number of graduates was the catalyst to document, improve understanding of, provide insights about and celebrate Aboriginal student success. Story telling is the strategy invoked in the study, which features the researcher's personal historical narrative about teaching and learning in the Aboriginal student community, and the narrative recollections shared by Aboriginal graduates about the university journey, their experiences and their achievement of success. The stories voiced by the graduates are shared within the conceptual model of a medicine wheel, and reveal an interactive pattern of the graduates aspirations, their challenges met and overcome, their growth achieved, and the resulting changes which took place in their lives. The process of success emerging from the graduates' stories, illuminates the way for Aboriginal students who go to university, and is an empowering vision for change.