cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Laser Astrometric Test of Relativity: Science, Technology, and Mission Design
Creators: name: Turyshev, Slava G.
name: Shao, Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Laser Astrometric Test of Relativity (LATOR) experiment is designed to explore general theory of relativity in the close proximity to the Sun -- the most intense gravitational environment in the solar system. Using independent time-series of highly accurate measurements of the Shapiro time-delay (interplanetary laser ranging accurate to 3 mm at 2 AU) and interferometric astrometry (accurate to 0.01 picoradian), LATOR will measure gravitational deflection of light by the solar gravity with accuracy of 1 part in a billion -- a factor ~30,000 better than currently available. LATOR will perform series of highly-accurate tests in its search for cosmological remnants of scalar field in the solar system. We present science, technology and mission design for the LATOR mission.
description: 12 pages, 4 figures. To appear in the proceedings of the International Workshop "From Quantum to Cosmos: Fundamental Physics Research in Space", 21-24 May 2006, Warrenton, Virginia, USA http://physics.jpl.nasa.gov/quantum-to-cosmos/
Η στάση της ρουμανικής ιστοριογραφίας απέναντι στους Φαναριώτες
Creators: name: Χριστοδούλου, Γεώργιος Αλέξανδρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Φαναριώτες
Ρουμανία
Ιστοριογραφία
Phanariotes
Romania
Historiography

description: Σκοπός της διατριβής ήταν η μελέτη της στάσης της ρουμανικής ιστοριογραφίας αναφορικά με τους Φαναριώτες και το πώς αυτή μεταβάλλεται στο πέρασμα του χρόνου. Εξετάστηκε η ρουμανική και η διεθνή βιβλιογραφία ώστε να καθοριστεί επακριβώς ποία ήταν η τάξη των Φαναριωτών και ποιός είναι ο απολογισμός των ημερών τους στη Μολδαβία και τη Βλαχία. Στη συνέχεια παρουσιάστηκε η πορεία και τα στάδια που πέρασε η ρουμανική ιστοριογραφία από τις αρχές του 18ου αιώνα έως και τη σύγχρονη εποχή. Στα επόμενα κεφάλαια παρατίθεται η εικόνα των Φαναριωτών στη ρουμανική ιστοριογραφία ανά χρονολογικές περιόδους όπως αυτή προκύπτει από την εξέταση της διαθέσιμης βιβλιογραφίας.
description: The aim of the present thesis was the study of Romanian historiography’s stance in relation to the Phanariotes and how it changes over time. The Romanian and international bibliography was examined in order to determine with accuracy what was the class of the Phanariotes and what is the assessment of their days in Moldova and Wallachia. Furthermore there was a presentation of the course of the Romanian historiography and the stages which it went through from the beginning of the 18th century up until the contemporary era. In the following chapters the image of the Phanariotes in the Romanian historiography is portrayed by time periods, as it is ensued by the examination of the available bibliography.
Η διδασκαλία του μαθήματος της Ιστορίας στη δευτεροβάθμια εκπαίδευση με τη χρήση οπτικοακουστικού υλικού:
Creators: name: Παπαντώνη, Μαργαρίτα Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Διδασκαλία
Ιστορία
Οπτικοακουστικό
Teaching
History
Audiovisual

description: Η διατριβή αυτή στοχεύει στην προσέγγιση του μεγέθους της συμβολής της χρήσης οπτικοακουστικού υλικού στη διδασκαλία του μαθήματος της Ιστορίας, αλλά και στις προϋποθέσεις που πρέπει να συντρέχουν, ώστε αυτή να είναι αποτελεσματική. Αρχικά εξετάζουμε τις ιδιαιτερότητες που χαρακτηρίζουν την Ιστορία τόσο ως επιστημονικό, όσο και ως εκπαιδευτικό αντικείμενο. Αναφερόμαστε στον παραδοσιακό και σύγχρονο τρόπος προσέγγισής της, καθώς και στους στόχους διδασκαλίας που τίθενται από το Υπουργείο Παιδείας. Αναπτύσσουμε τις θεωρίες που πρέπει να γνωρίζει ο εκπαιδευτικός για να έχει καλύτερα μαθησιακά αποτελέσματα και τις θεωρίες που αφορούν τη διδασκαλία με τη χρήση πολυμεσικών εφαρμογών. Αναλύουμε τη χρησιμότητα της οπτικοποίησης του μαθήματος και παρουσιάζουμε το κάθε οπτικοακουστικό μέσο ξεχωριστά με τα ιδιαίτερα πλεονεκτήματα που προσφέρει, αλλά και τα προβλήματα που μπορούν να προκύψουν από τη χρήση του. Κάτω από τη σωστή χρήση από το διδάσκοντα παρατηρούμε ότι μπορεί να συμβάλει αποτελεσματικά στη διδασκαλία της Ιστορίας.\
description: The aim of this thesis is to approach the contribution of the audiovisual means in teaching history and the conditions under which these means can be effective. We examine history not only as a scientific field, but also as an educational subject. We refer both to the traditional and contemporary frameworks of History, as well as the educational objectives suggested by the Ministry of Education. We present theories that a teacher should be aware of in order to achieve better educational goals and others referring to the use of multimedia applications. We analyze the usefulness of the visualization of a course with the advantages and problems arising from the use of each individual means. If properly used by the teacher, these means can provide an effective contribution to the teaching of History.
White Dwarf Photospheric Abundances in Cataclysmic Variables: I. SS Aurigae and TU Mensae
Creators: name: Godon, Patrick
name: Sion, Edward
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Chemical abundances studies of cataclysmic variables have revealed high nitrogen to carbon ratios in a number of of cataclysmic variable white dwarfs (based on ultraviolet emission and absorption lines), as well as possible carbon deficiency in many secondaries (based on the absence of infrared CO absorption lines). These indicate that the accreted material on the white dwarf surface and the donor itself might be contaminated with CNO processed material. To further understand the origin of this abundance anomaly, there is a need for further chemical abundance study. In the present work, we carry out a far ultraviolet spectral analysis of the extreme SU UMa dwarf nova TU Men and the U Gem dwarf nova SS Aur using archival spectra. We derive the mass and temperature of the WD using the recently available DR2 Gaia parallaxes. The analysis of HST STIS spectra yields a WD mass $M_{\rm wd}=0.77^{+0.16}_{-0.13}M_{\odot}$ with a temperature of $27,750 \pm 1000$~K for TU Men, and a WD mass $M_{\rm wd} \sim 0.80 \pm 0.15$ with a temperature of $\sim 30,000 \pm 1000$~K for SS Aur. However, the analysis of a FUSE spectrum for SS Aur gives to a higher temperature $\sim 33,375 \pm 1875 $~K, yielding to a higher WD mass $\sim 1 \pm 0.25 M_{\odot}$, which could be due to the effect of a second hot emitting component present in the short wavelengths of FUSE. Most importantly, based on the white dwarf far ultraviolet absorption lines, we find that both systems have subsolar carbon and silicon abundances. For TU Men we also find suprasolar nitrogen abundance, evidence of CNO processing.
description: Accepted for publication in The Astrophysical Journal, 2021
Treatment of the Coulomb interaction in three-nucleon reactions
Creators: name: Deltuva, A.
name: Fonseca, A. C.
name: Sauer, P. U.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Coulomb interaction between the two protons is included in the calculation of three-nucleon hadronic and electromagnetic reactions using screening and renormalization approach. Calculations are done using integral equations in momentum space. The reliability of the method is demonstrated. The Coulomb effect on observables is discussed.
description: Talk given at the 18th International IUPAP Conference on Few-Body Problems in Physics, Santos, August 21 - 26, 2006
VirusBoxing: A HIIT-based VR boxing game
Creators: name: Xu, Wenge
name: Liang, Hai-Ning
name: Ma, Xiaoyue
name: Li, Xiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: H.5.2

description: Physical activity or exercise can improve people's health and reduce their risk of developing several diseases; most importantly, regular activity can improve the quality of life. However, lack of time is one of the major barriers for people doing exercise. High-intensity interval training (HIIT) can reduce the time required for a healthy exercise regime but also bring similar benefits of regular exercise. We present a boxing-based VR exergame called VirusBoxing to promote physical activity for players. VirusBoxing provides players with a platform for HIIT and empowers them with additional abilities to jab a distant object without the need to aim at it precisely. In this paper, we discuss how we adapted the HIIT protocol and gameplay features to empower players in a VR exergame to give players an efficient, effective, and enjoyable exercise experience.
description: Corresponding author: haining.liang@xjtlu.edu.cn
title: Can the standard IBTS-MIK survey provide reliable data on herring recruitment and spawning locations?
Creators: name: van Damme, C.J.G.
name: Bakker, C.
name: Höffle, H.
name: Nash, R.D.M.
Publisher: name: ASC 2013 - Theme session P
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author. In February and March each year an IBTS-MIK survey is conducted in the North Sea and English Channel to estimate the number of herring larvae. The standard sampling utilises a MIK (2m mid-water ring trawl: 1.6 mm mesh size), which is designed to catch larger autumn spawned herring larvae. The MIK-recruitment index ignores larvae below 11 mm. However, in recent years the numbers of small larvae has increased due to the increased herring winter spawning component and a prolonged spawning season. The international herring larvae surveys (IHLS) use a Gulf VII high-speed plankton sampler (280 µm) for catching small, recently hatched larvae. This survey finishes too early for newly hatched larvae in February.
Heat capacity of nonequilibrium electron-hole plasma in graphene layers and graphene~bilayers
Creators: name: Ryzhii, V.
name: Ryzhii, M.
name: Otsuji, T.
name: Mitin, V.
name: Shur, M. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyze the statistical characteristics of the quasi-nonequilibrium two-dimensional electron-hole plasma in graphene layers (GLs) and graphene bilayers (GBLs) and evaluate their heat capacity.The GL heat capacity of the weakly pumped intrinsic or weakly doped GLs normalized by the Boltzmann constant is equal to $c_{GL} \simeq 6.58$. With varying carrier temperature the intrinsic GBL carrier heat capacity $c_{GBL}$ changes from $c_{GBL} \simeq 2.37$ at $T \lesssim 300$~K to $c_{GBL} \simeq 6.58$ at elevated temperatures. These values are markedly differentfrom the heat capacity of classical two-dimensional carriers with $c = 1$. The obtained results can be useful for the optimization of different GL- and GBL-based high-speed devices.
description: 6 pages, one figure
Singularity resolution in spherically reduced 2D semiclassical gravity with negative central charge
Creators: name: del Río, Adrián
name: Marañón-González, F. Javier
name: Navarro-Salas, José
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the semiclassical Schwarzschild geometry in the Boulware quantum state in the framework of two-dimensional (2D) dilaton gravity. The classical model is defined by the spherical reduction of Einstein's gravity sourced with conformal scalar fields. The expectation value of the stress-energy tensor in the Boulware state is singular at the classical horizon of the Schwarzschild spacetime, but when backreaction effects are considered, previous results have shown that the 2D geometry is horizonless and described by a non-symmetric wormhole with a curvature singularity on the other side of the throat. In this work we show that reversing the sign of the central charge of the conformal matter removes the curvature singularity of the 2D backreacted geometry, which happens to be horizonless and asymptotically flat. This result is consistent with a similar analysis recently performed for the CGHS model. We also argue the physical significance of negative central charges in conformal anomalies from a four-dimensional perspective.
description: V3: minor changes, misprints corrected, matches the published version (Phys. Rev. D)
Astrometric Perturbations in Substructure Lensing
Creators: name: Chen, Jacqueline
name: Rozo, Eduardo
name: Dalal, Neal
name: Taylor, James E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In recent years, gravitational lensing has been used as a means to detect substructure in galaxy-sized halos, via anomalous flux ratios in quadruply-imaged lenses. In addition to causing anomalous flux ratios, substructure may also perturb the positions of lensed images at observable levels. In this paper, we numerically investigate the scale of such astrometric perturbations using realistic models of substructure distributions. Substructure distributions that project clumps near the Einstein radius of the lens result in perturbations that are the least degenerate with the best-fit smooth macromodel, with residuals at the milliarcsecond scale. Degeneracies between the center of the lens potential and astrometric perturbations suggest that milliarcsecond constraints on the center of the lensing potential boost the observed astrometric perturbations by an order of magnitude compared to leaving the center of the lens as a free parameter. In addition, we discuss methods of substructure detection via astrometric perturbations that avoid full lens modeling in favor of local image observables and also discuss modeling of systems with luminous satellites to constrain the masses of those satellites.
description: 15 pages, 13 figures, ApJ accepted version. 2 new figures, additional section on halo-to-halo variation
title: Using fishers’ echo-sounder buoys. A behavioral approach to improve the remote characterization of fish aggregations around fish aggregating devices (FADs)
Creators: name: Lopez, Jon
name: Moreno, Gala
name: Boyra, Guillermo
name: Dagorn, Laurent
Publisher: name: ASC 2013 - Theme session P
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author. Thousands of drifting fish aggregating devices (DFADs) are employed worldwide in the tropical tuna purse seiner fishery, most of them actively monitored by satellite linked echo-sounder buoys which provide fishers with accurate geolocation information and rough estimates of total biomass. The aim of this study was to improve biomass estimates of current fishers’ echo-sounder buoys so that scientist can use this data source as observatory tools to study pelagic ecosystems. To this end, we developed three different methods combining vertical fish behavior of the diverse species present at DFADs, regional catch statistics, and different target strength values, and compared with manufacturers’ biomass estimation accuracy in 27 different samples. Results showed that the three methods developed by the authors have significantly improved the original error of manufacturers’ method, which is largely variable. In addition, the study suggests that on average only 25% of the aggregation present at DFAD is sampled by the echo-sounder buoy. We finally propose one of the three methods as the best approach to convert acoustic backscatter from fishers´ echo-sounder buoys into biomass, making the data useful to fish ecologist working on tropical pelagic ecosystems.
title: Ökonomische Bildung in der Sozialen Marktwirtschaft
title: Korreferat zu Nils Goldschmidt und Marco Rehm
titleType: Subtitle
Creators: name: Dilger, Alexander
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2024
Subjects: subject: 330 Economics

description: In diesem Korreferat zu dem Beitrag "Ökonomische Bildung in der Sozialen Marktwirtschaft"
von Nils Goldschmidt und Marco Rehm werden zuerst die Hauptpunkte ihrer Argumentation
herausgestellt und danach kritisch betrachtet. Die Ordonomik von Ingo Pies erscheint zu eng
und kontrovers für allgemeinbildende Schule, könnte jedoch als ein Element die ökonomische
Bildung bereichern, die nicht dogmatisch, sondern tolerant und pluralistisch die Grundlagen
der sozialen Marktwirtschaft vermitteln sollte.
description: In this discussion of the article "Economic Education in the Social Market Economy" by Nils
Goldschmidt and Marco Rehm, the main points of their argument are first highlighted and
then critically examined. Ingo Pies's Ordonomics appears to be too narrow and controversial
for general education schools, but could enrich economic education as an element, which
should teach the basics of the social market economy in a tolerant and pluralistic instead of
dogmatic way.
AstroSat view of GRS 1915+105 during the Soft State: Detection of HFQPOs and estimation of Mass and Spin
Creators: name: H., Sreehari
name: Nandi, Anuj
name: Das, Santabrata
name: Agrawal, V. K.
name: Mandal, Samir
name: Ramadevi, M. C.
name: Katoch, Tilak
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the results of AstroSat observations of GRS 1915$+$105 obtained using 100 ks guaranteed-time (GT) during the soft state. The Color-Color Diagram (CCD) indicates a variability class of $δ$ with the detection of High Frequency QPO (HFQPO) in the power density spectra (PDS). The HFQPO is seen to vary in the frequency range of $67.96 - 70.62$ Hz with percentage rms $\sim 0.83 - 1.90$ % and significance varying from $1.63 - 7.75$. The energy dependent power spectra show that the HFQPO features are dominant only in $6 - 25$ keV energy band. The broadband energy spectra ($0.7 - 50$ keV) of SXT (Soft X-ray Telescope) and LAXPC (Large Area X-ray Proportional Counter) modelled with nthComp and powerlaw imply that the source has an extended corona in addition to a compact 'Comptonizing corona' that produces high energy emission and exhibits HFQPOs. The broadband spectral modelling indicates that the source spectra are well described by thermal Comptonization with electron temperature (kT$_{\rm e}$) of $2.07 - 2.43$ keV and photon-index ($Γ_{\rm nth}$) between $1.73-2.45$ with an additional powerlaw component of photon-index ($Γ_{\rm PL}$) between $2.94 - 3.28$. The norm of nthComp component is high ($\sim 8$) during the presence of strong HFQPO and low ($\sim 3$) during the absence of HFQPO. Further, we model the energy spectra with the kerrbb model to estimate the accretion rate, mass and spin of the source. Our findings indicate that the source accretes at super-Eddington rate of $1.17-1.31~ \dot{M}_{\rm Edd}$. Moreover, we find the mass and spin of the source as $12.44 - 13.09~M_{\odot}$ and $0.990-0.997$ with $90\%$ confidence suggesting that GRS 1915$+$105 is a maximally rotating stellar mass X-ray binary black hole source.
description: 11 pages, 9 figures
Η διαπίστευση συστημάτων πιστοποίησης στον ευρωπαϊκό: κριτήρια και διαδικασίες αξιολόγησης συστημάτων πιστοποίησης
Creators: name: Καυκιά, Χριστούλα Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Διαπίστευση
Πιστοποίηση
Αξιολόγηση
Συστήματα γλωσσομάθειας
Accreditation
Assessment
Evaluation
Certification
Language learning systems

description: Η παρούσα ερευνητική εργασία εκπονείται ως μια διαγνωστική μελέτη για την αποτύπωση της υφιστάμενης λειτουργίας της διαπίστευσης στον ευρωπαϊκό χώρο με επίκεντρο τα κριτήρια και τις διαδικασίες αξιολόγησης συστημάτων πιστοποίησης. Πρόκειται για εμπειρική έρευνα αμιγώς βιβλιογραφική, η οποία βασίζεται σε πληροφορίες λεκτικά διατυπωμένες και προσπελάσιμες σε βιβλιοθήκες και, κατά κύριο λόγο, στο διαδίκτυο. Το σώμα του υλικού συγκροτείται από κείμενα σε ηλεκτρονική μορφή τα οποία έχουν εκδοθεί από τους ίδιους τους φορείς διαπίστευσης που μελετώνται: του ΟΗ-ΝΥΑΚ και ΝΥΑΤ της Ουγγαρίας για τη διαπίστευση της πιστοποίησης γλωσσομάθειας, καθώς και του ελληνικού φορέα ΕΣΥΔ. Κατά την ιχνηλασία του δημοσιευμένου υλικού αποδελτιώνεται ένας αριθμός περιγραφητών που αφορούν το προφίλ του αρμόδιου οργανισμού για τη διαπίστευση, το νομικό έρεισμα, τις διεργασίες, τις προδιαγραφές και την τεκμηρίωση. Επιπλέον, διερευνάται ο τρόπος σύλληψης και υλοποίησης της Δ.Ο.Π (Διοίκηση Ολικής Ποιότητας) στην εκπαίδευση ως παροχή υπηρεσιών με ιδιαίτερα λεπτομερή μνεία στα εργαλεία της ΔΟΠ, ως εργαλεία αξιολόγησης «εσωτερικού» και «εξωτερικού» προσανατολισμού, και ένα πλήρες συνοδευτικό παράρτημα προς επαλήθευση των συμπερασμάτων. Τέλος, διατυπώνονται προτάσεις για μια επικείμενη διαπίστευση των συστημάτων πιστοποίησης γλωσσομάθειας που δραστηριοποιούνται στην Ελλάδα.
description: This research paper prepared as a diagnostic study to capture the actual operation of accreditation in Europe focusing on the criteria and procedures for evaluating certification schemes. It is a question of an empirical survey, based on information verbally articulated and accessible in libraries and, primarily, on the Internet. The body of the material consists of texts in electronic form issued by their own accreditation bodies are studied here: OH-NYAK and NYAT in Hungary for the accreditation of the certification language and the Greek institution of accreditation, ESYD. When tracking the published material a number of descriptors is indexed on the profile of the responsible agency for the accreditation, legal basis, processes, specifications and documentation. Furthermore, essential related research is recorded on how design and implementation of TQM may be applied in education, considered as a service, with highly detailed reference to the tools of TQM, as assessment tools with "internal" and "external" orientation and a complete accompanying Annex to verify the findings. Finally, proposals are formulated for a forthcoming accreditation of language certification systems operating in Greece.
Modified Newton's law, braneworlds, and the gravitational quantum well
Creators: name: Buisseret, F.
name: Silvestre-Brac, B.
name: Mathieu, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Most of the theories involving extra dimensions assume that only the gravitational interaction can propagate in them. In such approaches, called brane world models, the effective, 4-dimensional, Newton's law is modified at short as well as at large distances. Usually, the deformation of Newton's law at large distances is parametrized by a Yukawa potential, which arises mainly from theories with compactified extra dimensions. In many other models however, the extra dimensions are infinite. These approaches lead to a large distance power-law deformation of the gravitational newtonian potential $V_N(r)$, namely $V(r)=(1+k_b/r^b)V_N(r)$, which is less studied in the literature. We investigate here the dynamics of a particle in a gravitational quantum well with such a power-law deformation. The effects of the deformation on the energy spectrum are discussed. We also compare our modified spectrum to the results obtained with the GRANIT experiment, where the effects of the Earth's gravitational field on quantum states of ultra cold neutrons moving above a mirror are studied. This comparison leads to upper bounds on $b$ and $k_b$.
description: 11 pages, 1 figure
title: Acoustic detection of zooplankton during fishery surveys and sensitivity of acoustic backscatter prediction models to parameters estimates
Creators: name: Machairopoulou, Margarita
name: Lusseau, David
name: Rasmussen, Jens
Publisher: name: ASC 2013 - Theme session P
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author. The study of mixed zooplankton communities with acoustic methods is not very common due to difficulties in successfully relating the observed acoustic backscatter with known abundance or biomass estimates. Zooplankton samples were collected during acoustic surveys off the Firth of Forth, Northwest North Sea, during March 2011. Zooplankton was identified into 16 broad taxonomic groups and the majority were acoustically characterised as ‘fluid-like’. The distorted wave Born approximation (DWBA) scattering model was used to predict target strength (TS) for each of these groups. The sensitivity of TS to model parameters was examined. For small zooplankton (< ~2mm length) the model gave little variation in TS across all parameters. However, for larger zooplankton generally, TS had increasing variation with frequency. Of all the parameters, the model was most sensitive to organism orientation. The magnitude of acoustic backscatter expected to be zooplankton was extracted from the survey data at the 3 frequencies used. Zooplankton biomass estimates were derived from the net samples. The zooplankton backscatter, however, did not correlate with the biomass estimates indicating the need for continued investigation of parameter optimisation for ‘ground-truthing’ of acoustic survey data.
ผลของสารโคลชิซินต่อการเปลี่ยนแปลงการเจริญเติบโต และลักษณะทางสัณฐานวิทยาของข้าวพันธุ์ขาวเจ๊ก จังหวัดชัยนาท
Creators: name: สัณฐิตา ตังคจิวางกูร
Publisher: name: คณะเทคโนโลยีการเกษตร มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2024
Subjects: สารโคลชิซิน
ขาวเจ๊ก
สัณฐานวิทยา

description: วารสารเกษตรพระวรุณ, 21, 2, 93-101
Το ναυτεργατικό ατύχημα:
Creators: name: Πλαστάρα, Γλυκερία Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Ναυτικός
Ατύχημα
Αποζημίωση
Seaman
Accident
Compensation

description: Η διπλωματική εργασία με τίτλο «Το ναυτεργατικό ατύχημα» αναφέρεται στην έννοια του ναυτεργατικού ατυχήματος και στις αξιώσεις που γεννώνται στον ναυτικό που έπεσε θύμα ναυτεργατικού ατυχήματος, σύμφωνα με τις διατάξεις των Ν. 551/1915 και 66 ΚΙΝΔ. Μεγάλο τμήμα της εργασίας αναφέρεται στην ασθένεια του ναυτικού, η οποία αποτελεί και αυτή ναυτεργατικό ατύχημα, όταν εκδηλώνεται ή επιδεινώνεται υπό συγκεκριμένες προϋποθέσεις. Παράλληλα, γίνεται ειδική αναφορά σε ειδικές περιπτώσεις ναυτεργατικών ατυχημάτων, όπως η αυτοκτονία, η μέθη, το αφροδίσιο νόσημα και ο καρκίνος. Στο τέταρτο κεφάλαιο της εργασίας γίνεται εκτενής αναφορά στην έκταση και το βαθμό ευθύνη που φέρει εργοδότης ή κάποιος τρίτος σε περίπτωση ναυτεργατικού ατυχήματος καθώς και στο ενδεχόμενο συντρέχον πταίσμα του ίδιου του παθόντα ναυτικού. Στο ίδιο κεφάλαιο γίνεται, αναλυτικά, αναφορά στις παροχές που δικαιούται να αξιώσει για αποκατάσταση της ζημίας που υπέστη. Στο έκτο κεφάλαιο προσδιορίζονται τα πρόσωπα που δικαιούνται να λάβουν το ποσό της αποζημίωσης καθώς και το πρόσωπο που θα υποχρεωθεί να καταβάλει αυτήν, σε περίπτωση ναυτεργατικού ατυχήματος. Στο έβδομο κεφάλαιο γίνεται εκτενής αναφορά στην Κοινωνική Πρόνοια του ναυτικού και σε ειδικές κατηγορίες ναυτικών. Τέλος στο όγδοο και τελευταίο κεφάλαιο της εργασίας γίνεται αναφορά σε επιμέρους ζητήματα, όπως το εφαρμοστέο δίκαιο, η παραγραφή, ο συμβιβασμός και σε δικονομικά ζητήματα.
description: Τhe thesis entitled "The sailor’s accident" refers to the concept of seafarers accident and claims arising in the Navy sailors who fell victim to an accident, according to the Laws 551/1915 and 66 code of private maritime law. Much of the work refers to disease of the Navy, which also represents seafarers accident occurs or worsens when under certain conditions. Furthermore, specific reference to specific cases seafarers accidents, suicide, drunkenness, the venereal disease and cancer. In the fourth chapter of the work is extensive reference to the extent and degree of responsibility of an employer or a third party in case sailor’s accident and the possibility of contributory negligence victim's own navy. Still, in detail, refer to the benefits entitled to claim for damages suffered. The sixth chapter specified the persons entitled to the amount of compensation and the person who will have to pay it, if occurs an accident to a navy. In the seventh chapter is extensive reference to the Social Welfare of the seafarers and specific categories of seafarers. Finally in the eighth and final chapter of the work refers to specific issues such as the applicable law, the limitation, the compromise and procedural issues.
Activity patterns on random scale-free networks: Global dynamics arising from local majority rules
Creators: name: Zhou, Haijun
name: Lipowsky, Reinhard
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Activity or spin patterns on random scale-free network are studied by mean field analysis and computer simulations. These activity patterns evolve in time according to local majority-rule dynamics which is implemented using (i) parallel or synchronous updating and (ii) random sequential or asynchronous updating. Our mean-field calculations predict that the relaxation processes of disordered activity patterns become much more efficient as the scaling exponent $γ$ of the scale-free degree distribution changes from $γ>5/2$ to $γ< 5/2$. For $γ> 5/2$, the corresponding decay times increase as $\ln(N)$ with increasing network size $N$ whereas they are independent of $N$ for $γ< 5/2$. In order to check these mean field predictions, extensive simulations of the pattern dynamics have been performed using two different ensembles of random scale-free networks: (A) multi-networks as generated by the configuration method, which typically leads to many self-connections and multiple edges, and (B) simple-networks without self-connections and multiple edges.
description: 20 pages, 8 figures
Rational QCD loop amplitudes and quantum theories on twistor space
Creators: name: Dixon, Lance J.
name: Morales, Anthony
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show how curing an anomaly of the twistor uplift of self-dual Yang-Mills theory implies linear relations among one-loop, $n$-gluon, color-ordered subamplitudes in QCD, when all $n$ gluon helicities are positive, or when exactly one is negative. We compute the number of linearly independent subamplitudes as determined by these relations, in terms of unsigned Stirling numbers. Then we use a momentum-twistor parametrization to show that there are no further linear dependencies.
description: Fixed typos, added references
Non-classicality of photon added coherent and thermal radiations
Creators: name: Devi, A. R. Usha
name: Prabhu, R.
name: Uma, M. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Production and analysis of non-Gaussian radiation fields has evinced a lot of attention recently. Simplest way of generating such non-Gaussians is through adding (subtracting) photons to Gaussian fields. Interestingly, when photons are added to classical Gaussian fields, the resulting states exhibit {\em non-classicality}. Two important classical Gaussian radiation fields are coherent and thermal states. Here, we study the non-classical features of such states when photons are added to them. Non-classicality of these states shows up in the negativity of the Wigner function. We also work out the {\em entanglement potential}, a recently proposed measure of non-classicality for these states. Our analysis reveals that photon added coherent states are non-classical for all seed beam intensities; their non-classicality increases with the addition of more number of photons. Thermal state exhibits non-classicality at all temperatures, when a photon is added; lower the temperature, higher is their non-classicality.
description: Version 2, minor revision; new references added, to appear in Eur. Phys. J. D, 6 pages, 10 figure ps files, RevTeX
Topology-based Clusterwise Regression for User Segmentation and Demand Forecasting
Creators: name: Rivera-Castro, Rodrigo
name: Pletnev, Aleksandr
name: Pilyugina, Polina
name: Diaz, Grecia
name: Nazarov, Ivan
name: Zhu, Wanyi
name: Burnaev, Evgeny
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Topological Data Analysis (TDA) is a recent approach to analyze data sets from the perspective of their topological structure. Its use for time series data has been limited. In this work, a system developed for a leading provider of cloud computing combining both user segmentation and demand forecasting is presented. It consists of a TDA-based clustering method for time series inspired by a popular managerial framework for customer segmentation and extended to the case of clusterwise regression using matrix factorization methods to forecast demand. Increasing customer loyalty and producing accurate forecasts remain active topics of discussion both for researchers and managers. Using a public and a novel proprietary data set of commercial data, this research shows that the proposed system enables analysts to both cluster their user base and plan demand at a granular level with significantly higher accuracy than a state of the art baseline. This work thus seeks to introduce TDA-based clustering of time series and clusterwise regression with matrix factorization methods as viable tools for the practitioner.
Multipliers on a new class of Banach algebras, locally compact quantum groups, and topological centres
Creators: name: Hu, Zhiguo
name: Neufang, Matthias
name: Ruan, Zhong-Jin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 43A10, 43A20, 43A30, 46H05

description: We study multiplier algebras for a large class of Banach algebras which contains the group algebra $L_1(G)$, the Beurling algebras $L_1(G, ω)$, and the Fourier algebra $A(G)$ of a locally compact group $G$. This study yields numerous new results and unifies some existing theorems on $L_1(G)$ and $A(G)$ through an abstract Banach algebraic approach. Applications are obtained on representations of multipliers over locally compact quantum groups and on topological centre problems. In particular, five open problems in abstract harmonic analysis are solved.
description: 38 pages
Μη ομογενείς Μαρκοβιανές διαδικασίες και συστήματα σε συνεχή χρόνο:
Creators: name: Γρηγοριάδου, Ευαγγελία Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Μαρκοβιανές αλυσίδες
Μαρκοβιανά συστήματα
Μη ομογενείς
Markov chains
Markov systems
Non-homogeneaous

description: Στόχος της παρούσας διπλωματικής είναι η περιγραφή και η μελέτη των μη ομογενών Μαρκοβιανών αλυσίδων και συστημάτων σε συνεχή χρόνο. Αρχικά παρουσιάζονται περιληπτικά τα βασικά στοιχεία της θεωρίας των ομογενών και μη ομογενών Μαρκοβιανών αλυσίδων, τα οποία αποτελούν ένα υπόβαθρο για τις επόμενες ενότητες. Στο δεύτερο κεφάλαιο διάφορα θεωρήματα που έχουν αποδειχθεί για μη ομογενείς αλυσίδες σε διακριτό χρόνο επεκτείνονται για μη ομογενείς αλυσίδες σε συνεχή χρόνο. Τα θεωρήματα αυτά έχουν παρουσιαστεί από τους Jean Johnson (1984), Jean Johnson και Dean Isaacson (1988) και μελετώνται σε αυτή τη διπλωματική για να γίνει βαθύτερα κατανοητός ο τρόπος με τον οποίο εργαζόμαστε με τις αλυσίδες αυτές. Στο τελευταίο κεφάλαιο μελετάται το μη ομογενές Μαρκοβιανό σύστημα σε στοχαστικό περιβάλλον (S-NHMS). Αρχικά παρουσιάζονται ο ορισμός και η δομή ενός S-NHMS σε διακριτό χρόνο όπως εμφανίστηκαν στην εργασία των Tsantas και Vassiliou (1993). Τέλος, αναλύεται η συμπεριφορά ενός S-NHMS σε συνεχή χρόνο. Ορίζονται με ανάλογο τρόπο με αυτόν του διακριτού χρόνου οι βασικές παράμετροι του συστήματος καθώς και η δομή του.
description: The goal of this Master Thesis is the description and study of non-homogeneous Markov chains and systems in continuous time. First, the basic data of the theory of homogeneous and non-homogeneous Markov chains are presented. In the second chapter several theorems which have been proven for non-homogeneous, discrete-time Markov chains are extended to non-homogeneous, continuous-time Markov chains. These theorems are given by Jean Johnson (1984), Jean Johnson and Dean Isaacson (1988) and they are studied in this Master Thesis in order to understand properly the way we use to work with non-homogeneous, continuous-time Markov chains. In the final chapter, the non-homogeneous Markov system in a stochastic environment (S-NHMS) is studied. First, we give the definition and the structure of an S-NHMS in discrete time as they were presented by Tsantas and Vassiliou (1993). Finally, we present the S-NHMS in continuous time. We define the basic parameters of the system and we study the problem of finding the expected structure of an S-NHMS in continuous time.
Pathways for achieving climate and biodiversity targets through sustainable land-use and food systems in the UK
Creators: name: Jones, Sarah
Publisher: name: Lancaster University
Year: 2024
Subjects: land use
food systems
pathways
sustainability

description: There is significant global awareness of the core challenges of climate
 change and biodiversity loss associated with land-use, with increased
 international commitment to reduce greenhouse gas emissions and restore
 nature. Land-use has a critical role to play in overcoming these
 challenges. In the UK, current land-use is unsustainable, and will be
 unable to achieve national and international agreements for net-zero
 greenhouse gas emissions and biodiversity conservation. Business-as-usual
 is not sufficient, and the UK requires urgent and decisive action to
 mitigate climate change, reverse biodiversity decline whilst ensuring food
 security for future generations. Furthermore, the numerous alternative
 land-use configurations, and the complexity of governance and land-use in
 the UK, highlight the need for comprehensive and effective policy
 strategies for transforming land-use to achieve net-zero and biodiversity
 conservation.

 This thesis examined alternative pathways for land-use and food systems in
 the UK and devolved nations to achieve national and international climate
 and biodiversity agreements. Using a modified version of the FABLE
 Calculator (a simple integrated land-use model), alternative policy
 pathways were developed and modelled, and their feasibility assessed
 through spatialisation. Trade-offs and synergies within the pathways were
 analysed, and the implications of the policy pathways were evaluated. The
 results showed that current policies are inadequate for achieving net-zero
 or conserving biodiversity, highlighting the urgent need for
 transformational change. Alternative configurations of land-use, resulting
 from different policy combinations, indicate that whilst some pathways
 generated similar outcomes for achieving net-zero, there were greater
 gains for biodiversity in pathways that embed a multifunctional approach
 to land-use compared to those that do not. Integrating non-spatial FABLE
 projections with a downscaling algorithm enhanced the realism and
 applicability of the pathways, showing that the policy changes within the
 pathways are theoretically feasible given spatial environmental
 constraints. This is critical in moving from theoretical, high-level
 objectives to more localised and practical solutions.

 Overall, this thesis demonstrated the need for significant changes in
 policy, with increased ambitions across afforestation, crop and livestock
 productivity, stocking densities, biodiversity conservation, peatland
 restoration, dietary change and food waste. The findings underscore the
 urgent need for innovative, coordinated policy measures for supporting and
 incentivising transformative land-use changes. Through embracing these
 strategies, policy and decision-makers can pave the way towards a
 sustainable future that successfully balances climate change and
 biodiversity goals while maintaining a thriving agricultural sector.
title: Multi-sensor studies of euphausiid-fish interactions in the Gulf of Maine
Creators: name: Lawson, Gareth L.
name: Lavery, Andone C.
name: Wiebe, Peter H.
name: Jech, J. Michael
name: Copley, Nancy J.
Publisher: name: ASC 2013 - Theme session P
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author. The ecological importance of euphausiids in the Gulf of Maine is poorly understood, in part due to difficulties sampling them with traditional net systems. A study was conducted of herringeuphausiid interactions along the northwestern flank of Georges Bank using a suite of complementary sensors. Cruises were conducted in October and November of 2010, timed to capitalize on seasonal changes in herring predation on euphausiids and coordinated with fisheries acoustic/trawl surveys. Euphausiids were surveyed with depth-stratified nets (MOCNESS), a Video Plankton Recorder, and a multi-frequency (43, 120, 200, 420 kHz) echosounder, which was also used to observe fish. A combination of coarse-scale mapping along a regular grid of transects and fine-scale adaptive surveys were used to identify and then track euphausiid layers to observe how aggregation structure and vertical position varied with changing conditions. Tests were conducted of a new highfrequency (35 to 600 kHz) towed broadband echosounder intended to provide enhanced capabilities for acoustic discrimination of scatterer types relative to traditional narrowband systems. Comparisons of measurements between different sensor types were generally favorable.
Accessing a broader range of energy states in metallic glasses by variable-amplitude oscillatory shear
Creators: name: Priezjev, Nikolai V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The influence of variable-amplitude loading on the potential energy and mechanical properties of amorphous materials is investigated using molecular dynamics simulations. We study a binary mixture that is either rapidly or slowly cooled across the glass transition temperature and then subjected to a sequence of shear cycles with strain amplitudes above and below the yielding strain. It was found that well annealed glasses can be rejuvenated by small-amplitude loading if the strain amplitude is occasionally increased above the critical value. By contrast, poorly annealed glasses are relocated to progressively lower energy states when subyield cycles are alternated with large-amplitude cycles that facilitate exploration of the potential energy landscape. The analysis of nonaffine displacements revealed that in both cases, the typical size of plastic rearrangements varies depending on the strain amplitude and number of cycles, but remains smaller than the system size, thus preserving structural integrity of amorphous samples.
description: 23 pages, 8 figures
Hyperaccretion after the Blandford-Znajek Process: a New Model for GRBs with X-Ray Flares Observed in Early Afterglows
Creators: name: Lei, Wei-Hua
name: Wang, Ding-Xiong
name: Zou, Yuan-Chuan
name: Zhang, Lei
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a three-stage model with Blandford-Znajek (BZ) and hyperaccretion process to interpret the recent observations of early afterglows of Gamma-Ray Bursts (GRBs). In the first stage, the prompt GRB is powered by a rotating black hole (BH) invoking the BZ process. The second stage is a quiet stage, in which the BZ process is shut off, and the accretion onto the BH is depressed by the torque exerted by the magnetic coupling (MC) process. Part of the rotational energy transported by the MC process from the BH is stored in the disk as magnetic energy. In the third stage, the MC process is shut off when the magnetic energy in the disk accumulates and triggers the magnetic instability. At this moment, the hyperaccretion process may onset, and the jet launched in this restarted central engine generates the observed X-ray flares. This model can account for energies and timescales of GRBs with X-ray flares observed in early afterglows.
description: 10 pages, 2 figures. Accepted by ChJAA
Probabilistic Quantile Factor Analysis
Creators: name: Korobilis, Dimitris
name: Schröder, Maximilian
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Mathematical Sciences not elsewhere classified

description: This article extends quantile factor analysis to a probabilistic variant that incorporates regularization and computationally efficient variational approximations. We establish through synthetic and real data experiments that the proposed estimator can, in many cases, achieve better accuracy than a recently proposed loss-based estimator. We contribute to the factor analysis literature by extracting new indexes of low, medium, and high economic policy uncertainty, as well as loose, median, and tight financial conditions. We show that the high uncertainty and tight financial conditions indexes have superior predictive ability for various measures of economic activity. In a high-dimensional exercise involving about 1000 daily financial series, we find that quantile factors also provide superior out-of-sample information compared to mean or median factors.