cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Plankton community seasonal interactions in the open Gulf of Riga and impacts on ecosystem
Creators: name: Rubene, Gunta
name: Jurgensone, Iveta
name: Putnis, Ivars
name: Labucis, Atis
Publisher: name: ASC 2013 - Theme session F
Year: 2024
Subjects: Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author. Summary Current research aims to clarify the zooplankton seasonal interactions with phytoplankton and autotrophic ciliate Mesodinium rubrum in the Gulf of Riga and possible impacts on ecosystem. Data collection was performed in 2011 and 2012 on monthly basis from May till October. Simple statistical (Person correlation, Regression) and multivariate statistical analysis (Redundancy analysis) was used in this study.
Exchange flow through a channel with an underwater sill
Creators: name: Zhu, Zhiwei
Publisher: name: University of British Columbia
Year: 2009

description: The gravitational exchange of fluids between two bodies of water of slightly different density through a channel with a smooth two-dimensional underwater sill is studied theoretically and experimentally. Internal hydraulic theory is extended to incorporate the effects of streamline curvature caused by the sill. The extended theory is applied to both single and two-layer flows. Unlike internal hydraulic theory which fails to predict a whole class of two-layer flows, namely, approach-controlled flows, the extended theory with non-hydrostatic pressure considered achieves excellent agreement with previous experimental measurements. Internal hydraulic theory is further extended to incorporate the effects of friction caused by the channel and the two-layer interface, as well as the streamline curvature. For the exchange flow through a channel of constant width with a sill, maximal exchange occurs when both sill and exit controls are present. With the effects of curvature and friction considered, the sill control is shifted away from the sill crest, and the internal energy is no longer constant. Exchange flows established in the laboratory are studied using flow visualization, particle tracking, and image processing techniques. The friction factors for the sidewalls and bottom are estimated using boundary layer theories, while the interfacial friction factor is determined experimentally. The friction reduces the internal energy throughout the channel, significantly increases the interface slope and reduces the flow rate. The frictional effect is important throughout the channel, whereas the curvature effect is mainly important in the sill region. With both effects included, the exchange flow over a sill is accurately predicted. On the interface of exchange flows, interfacial instabilities are observed, with Kelvin- Helmholtz instabilities at both ends of the channel where shear is strong, and Holmboe instabilities in the middle region where shear is weaker. The Holmboe instabilities have been studied in detail. The existence of the negative shift, i.e., the shear center being lower than the density interface, is confirmed. This shift initially results in non-symmetric Holmboe waves. Later in the experiments, the shift reduces to zero and symmetric Holmboe waves are observed. The growth rate, wave lengths, and wave speeds of the Holmboe instabilities are measured and found to be in agreement with the linear stability theory of Haigh (1995). Variations in wave speeds when the positive and negative waves pass through each other have been observed for the first time experimentally. The Holmboe waves are stabilized when the bulk Richardson number exceeds about 0.8.
Cosmological solutions in Einstein-Gauss-Bonnet gravity with static curved extra dimensions
Creators: name: Chirkov, Dmitry
name: Giacomini, Alex
name: Pavluchenko, Sergey A.
name: Toporensky, Alexey
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we perform systematic investigation of all possible solutions with static compact extra dimensions and expanding three-dimensional subspace (``our Universe''). Unlike previous papers, we consider extra-dimensional subspace to be constant-curvature manifold with both signs of spatial curvature. We provide a scheme how to build solutions in all possible number of extra dimensions and perform stability analysis for the solutions found. Our study suggests that the solutions with negative spatial curvature of extra dimensions are always stable while those with positive curvature are stable for a narrow range of the parameters and the width of this range shrinks with growth of the number of extra dimensions. This explains why in the previous papers we detected compactification in the case of negative curvature but the case of positive curvature remained undiscovered. Another interesting feature which distinguish cases with positive and negative curvatures is that the latter do not coexist with maximally-symmetric solutions (leading to ``geometric frustration'' of a sort) while the former could -- this difference is noted and discussed.
description: 27 pages, 8 figures
Modular classes of Poisson-Nijenhuis Lie algebroids
Creators: name: Caseiro, Raquel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B62; 17B66; 37J35; 53D17

description: The modular vector field of a Poisson-Nijenhuis Lie algebroid $A$ is defined and we prove that, in case of non-degeneracy, this vector field defines a hierarchy of bi-Hamiltonian $A$-vector fields. This hierarchy covers an integrable hierarchy on the base manifold, which may not have a Poisson-Nijenhuis structure.
description: To appear in Letters in Mathematical Physics
Detection of multipartite entanglement with two-body correlations
Creators: name: Toth, Geza
name: Gühne, Otfried
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show how to detect entanglement with criteria built from simple two-body correlation terms. Since many natural Hamiltonians are sums of such correlation terms, our ideas can be used to detect entanglement by energy measurement. Our criteria can straightforwardly be applied for detecting different forms of multipartite entanglement in familiar spin models in thermal equilibrium.
description: 5 pages including 2 figures, LaTeX; for the proceedings of the DPG spring meeting, Berlin, March 2005
Heat, particle and chiral currents in a boundary driven bosonic ladders in presence of gauge fields
Creators: name: Xing, Bo
name: Xu, Xiansong
name: Balachandran, Vinitha
name: Poletti, Dario
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Quantum systems can undergo phase transitions and show distinct features in different phases. The corresponding transport properties can also vary significantly due to the underlying quantum phase. We investigate the transport behaviour of a two-legged bosonic ladder in a uniform gauge field, which is known to have a Meissner-like phase and a vortex phase in the absence of dissipation. The ladder is coupled to bosonic baths at different temperatures, and we study it using the non-equilibrium Green's function method. In particular, we show the presence of a chiral current and how it is affected by the temperature bias and the dissipation strength. We also demonstrate that the opening of a gap between the lower and upper energy band results in the possibility of tuning heat and particle transport through the ladder. We show that for system parameters for which the ground state is in a vortex phase, the system is more sensitive to external perturbations.
description: 10 pages, 11 figures
Maximal sets of mutually orthogonal frequency squares
Creators: name: Cavenagh, Nicholas J.
name: Mammoliti, Adam
name: Wanless, Ian M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B15

description: A frequency square is a square matrix in which each row and column is a permutation of the same multiset of symbols. A frequency square is of type $(n;λ)$ if it contains $n/λ$ symbols, each of which occurs $λ$ times per row and $λ$ times per column. In the case when $λ=n/2$ we refer to the frequency square as binary. A set of $k$-MOFS$(n;λ)$ is a set of $k$ frequency squares of type $(n;λ)$ such that when any two of the frequency squares are superimposed, each possible ordered pair occurs equally often. A set of $k$-maxMOFS$(n;λ)$ is a set of $k$-MOFS$(n;λ)$ that is not contained in any set of $(k+1)$-MOFS$(n;λ)$. For even $n$, let $μ(n)$ be the smallest $k$ such that there exists a set of $k$-maxMOFS$(n;n/2)$. It was shown in [Electron. J. Combin. 27(3) (2020), P3.7] that $μ(n)=1$ if $n/2$ is odd and $μ(n)>1$ if $n/2$ is even. Extending this result, we show that if $n/2$ is even, then $μ(n)>2$. Also, we show that whenever $n$ is divisible by a particular function of $k$, there does not exist a set of $k'$-maxMOFS$(n;n/2)$ for any $k'\le k$. In particular, this means that $\limsup μ(n)$ is unbounded. Nevertheless we can construct infinite families of maximal binary MOFS of fixed cardinality. More generally, let $q=p^u$ be a prime power and let $p^v$ be the highest power of $p$ that divides $n$. If $0\le v-uh
title: Vertical distribution in relation with food availability and morphology of the larval stages of Polycheles typhlops (Decapoda, Polychelida) from plankton samples
Creators: name: Torres, Asvin P.
name: Guerao, Guillermo
name: Abelló, Pere
name: Blanco, Edurne
name: Boné, Alexandra
name: Palero, Ferran
name: Dos Santos, Antonina
name: Hidalgo., Manuel
Publisher: name: ASC 2013 - Theme session F
Year: 2024
Subjects: Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author. Despite crustacean decapod larvae may dominate the meroplankton in some areas and seasons, little is known about their larval ecology. In this study, mesozooplankton sampling was carried out using depth-stratified sampling devices at two stations located on the continental shelf break and middle slope, in the northwest and south of Mallorca (W Mediterranean) in late autumn 2009 and summer 2010
Αξιολόγηση Συστημάτων Καταγραφής Οδικών Τροχαίων Ατυχημάτων
Creators: name: Σπυριδωνίδου, Αλεξία Ευαγγέλου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Δελτία Οδικών Τροχαίων Ατυχημάτων
Συστήματα Καταγραφής & Επεξεργασίας Οδικών Τροχαίων Ατυχημάτων
Οδική Ασφάλεια
Road Accident Data Collection Forms
Accident Data Collection and Elaborating Systems
Road Safety

description: Στόχο της παρούσας Διατριβής αποτελεί η διερεύνηση των συστημάτων καταγραφής και επεξεργασίας των οδικών τροχαίων ατυχημάτων ανά τον κόσμο, η σύγκριση και η αξιολόγησή τους, και στη συνέχεια η αξιοποίηση των συμπερασμάτων για την διαμόρφωση του πλαισίου επικαιροποίησης του ελληνικού συστήματος καταγραφής και επεξεργασίας οδικών τροχαίων ατυχημάτων, βάση του οποίου αποτελεί το Δελτίο Οδικών Τροχαίων Ατυχημάτων (Δ.Ο.Τ.Α.). Για τον σκοπό αυτό επιλέχθηκαν Δελτία Οδικών Τροχαίων Ατυχημάτων από είκοσι χώρες και διάφορες πολιτείες των Η.Π.Α., τα οποία αναλύθηκαν ως προς την έκταση, το περιεχόμενο και την ευχρηστία τους. Ταυτόχρονα διερευνήθηκαν οι τάσεις που διαφαίνονται σε παγκόσμιο επίπεδο, αναφορικά με το είδος και την ποιότητα των δεδομένων που συλλέγονται, καθώς και την διερεύνηση τρόπων για την εύκολη επεξεργασία και αξιοποίησή τους. Τα συμπεράσματα που προέκυψαν από τη σύγκριση αυτή, καθώς και η έρευνα στις προσπάθειες που γίνονται σε παγκόσμιο επίπεδο για την καταγραφή και επεξεργασία των οδικών τροχαίων ατυχημάτων οδήγησαν στην αξιολόγηση του ελληνικού Δ.Ο.Τ.Α. καθώς και στην τεκμηρίωση και διαμόρφωση προτάσεων, τόσο σε στρατηγικό επίπεδο, όσο και σε επιμέρους επεμβάσεις. Τέλος, παρουσιάζονται τα συμπεράσματα που προέκυψαν από την παραπάνω διαδικασία, καθώς και οι προοπτικές που διαφαίνονται για την ανάπτυξη των συστημάτων καταγραφής και επεξεργασίας των Οδικών Τροχαίων Ατυχημάτων, με γνώμονα τη βελτιστοποίηση της συμβολής τους στην έρευνα για την Οδική Ασφάλεια.
description: Main purpose of the current Thesis is to investigate, evaluate and compare the Road Accident Data Collection and Elaborating Systems worldwide. The outcomes of this procedure were used for shaping the framework under which the Greek Data Collection and Elaborating System could be updated. Road Accident Data Collection Forms from twenty countries/ States of U.S.A. were collected and been analyzed for this purpose. Guidelines that are being implemented at international level are also examined. Focusing on the kind of data being collected and on finding new, easier, ways for elaborating and using them. The outcomes of the comparison which was mentioned above, and the survey of the worldwide trends about Evaluation of Road Accident Data Collection and Elaborating Systems, were used to evaluate the Greek Road Accident Data Collection Form and then to propose changes at both strategic and particular level. Finally, the outcomes of the procedure of conducting this Thesis are being presented. Apart from that, it shows the perspectives and trends which were identified in the field of Road Accident Data Collection and Collaboration, and which have to do with improving the Road Safety Survey.
Theory of Light Emission in Sonoluminescence as Thermal Radiation
Creators: name: Tse, Wang-Kong
name: Leung, P. T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Based on the model proposed by Hilgenfeldt {\it at al.} [Nature {\bf 398}, 401 (1999)], we present here a comprehensive theory of thermal radiation in single-bubble sonoluminescence (SBSL). We first invoke the generalized Kirchhoff's law to obtain the thermal emissivity from the absorption cross-section of a multilayered sphere (MLS). A sonoluminescing bubble, whose internal structure is determined from hydrodynamic simulations, is then modelled as a MLS and in turn the thermal radiation is evaluated. Numerical results obtained from simulations for argon bubbles show that our theory successfully captures the major features observed in SBSL experiments.
description: 17 pages, 20 figures
title: Sufficiently wide assessment units to make MSFD monitoring effective: seabirds in the Baltic Sea as an example
Creators: name: Lappalainen, Antti
name: Rintala, Jukka
Publisher: name: ASC 2013 - Theme session G
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Seabirds form a visible and important biodiversity component in the Baltic Sea (BS) area. Assessment units based on national borders or BS sub-regions might be too narrow for highly mobile seabird species. We argue that even BS-wide assessment should be considered when two conditions are met: 1) the distribution area of the species of concern covers large parts of the BS and the individuals belong to the same population, and 2) the conservation status of the species can only be maintained or improved by large-scale management plans. This might be the case, for instance, if the population is affected by various additive pressures in different regions of the BS or even outside the BS. Here, we demonstrate that the two conditions are commonly met in sea ducks and auks in the BS. We also emphasize that monitoring of fledgling production should be included in assessments in order to improve understanding of the demographic factors affecting population dynamics. Sufficiently wide assessment units and monitoring approaches could enable the production of high-quality assessments for the EU Marine Strategy Framework Directive (MSFD).
Projected single-spin flip dynamics in the Ising Model
Creators: name: Ferreira, A. L. C.
name: Toral, Raul
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study transition matrices for projected dynamics in the energy-magnetization space, magnetization space and energy space. Several single spin flip dynamics are considered such as the Glauber and Metropolis canonical ensemble dynamics and the Metropolis dynamics for three multicanonical ensembles: the flat energy-magnetization histogram, the flat energy histogram and the flat magnetization histogram. From the numerical diagonalization of the matrices for the projected dynamics we obtain the sub-dominant eigenvalue and the largest relaxation times for systems of varying size. Although, the projected dynamics is an approximation to the full state space dynamics comparison with some available results, obtained by other authors, shows that projection in the magnetization space is a reasonably accurate method to study the scaling of relaxation times with system size. The transition matrices for arbitrary single-spin flip dynamics are obtained from a single Monte-Carlo estimate of the infinite temperature transition-matrix, for each system size, which makes the method an efficient tool to evaluate the relative performance of any arbitrary local spin-flip dynamics. We also present new results for appropriately defined average tunnelling times of magnetization and compute their finite-size scaling exponents that we compare with results of energy tunnelling exponents available for the flat energy histogram multicanonical ensemble.
description: 23 pages and 6 figures
Generation and propagation of an open vortex beam
Creators: name: Zeng, Ruoyu
name: Zhao, Qi
name: Yang, Yuanjie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We theoretically and experimentally studied a novel class of vortex beams named open vortex beams (OVBs). Such beams are generated using Gaussian beams diffracted by partially blocked fork-shaped gratings (PB-FSGs).The analytical model of OVBs in the near field and far field is given by superpositions of Hypergeometric (HyG) modes. Unlike conventional integer and fractional vortex beams, the OVBs can have both an open ring structure and an integer topological charge (TC). The TC is decided by the circumference covered by the open ring. It is also quantitatively shown that a $π/2$ rotation of the open ring occurs in the propagation of an OVB due to the Gouy phase shift. Futhermore, we demonstrate experimental generation and detection of OVBs. Our experimental results are in very good agreement with the theory. We believe that the OVB can be the potential candidate for numerous applications, such as particle manipulation, quantum information and optical metrology.
Spin Dynamics of $Ni Cl_2-4SC(NH_2)_2$ in the Field-Induced Ordered Phase
Creators: name: Zvyagin, S. A.
name: Wosnitza, J.
name: Kolezhuk, A. K.
name: Zapf, V. S.
name: Jaime, M.
name: Paduan-Filho, A.
name: Glazkov, V. N.
name: Sosin, S. S.
name: Smirnov, A. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: $Ni Cl_2$-$4SC(NH_2)_2$ (known as DTN) is a spin-1 material with a strong single-ion anisotropy that is regarded as a new candidate for Bose-Einstein condensation (BEC) of spin degrees of freedom. We present a systematic study of the low-energy excitation spectrum of DTN in the field-induced magnetically ordered phase by means of high-field electron spin resonance measurements at temperatures down to 0.45 K. We argue that two gapped modes observed in the experiment can be consistently interpreted within a four-sublattice antiferromagnet model with a finite interaction between two tetragonal subsystems and unbroken axial symmetry. The latter is crucial for the interpretation of the field-induced ordering in DTN in terms of BEC.
description: 4 pages, 3 figures
title: Good Environmental Status and the plankton: combining disparate datasets to assess pelagic habitats at national and regional scales
Creators: name: McQuatters-Gollop, Abigail
name: Gowen, Richard
name: Scherer, Cordula
name: Tett, Paul
Publisher: name: ASC 2013 - Theme session G
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. A key feature of the MSFD is consistency and comparability in ecological datasets used for indicator construction and monitoring towards environmental targets; however this may be challenging due to the cost of modifying existing monitoring programmes or starting new ones. The preservation of existing time-series, particularly those which are multi-decadal, should be a priority, especially when attempting to separate the climate change signal from that occurring due to manageable human pressures. The UK has developed plankton indicators for the MSFD’s ‘biodiversity’ descriptors (D1 Biodiversity, D4 Foodwebs, D6 Seafloor integrity) which allow the combination and integration of data arising from existing plankton datasets, with disparate methods of sample collection and analysis, to be used to monitor changes in the state of the plankton. This method is based on the use of plankton lifeforms and encourages the continuation of established long-term datasets. Associated environmental targets have been developed which allow for ecosystem response to unmanageable climate change yet trigger management action if changes in the plankton are linked to anthropogenic pressure. The UK’s pelagic habitat indicators and targets have been recently approved for further development as OSPAR common indicators which, if operationalized, will be used by all OSPAR contracting parties to assess the state of the plankton component of pelagic ecosystems at the regional scale. Here the challenges and proposed solutions to MSFD pelagic habitat implementation at the UK and OSPAR levels are outlined.
Variational Calculations using Low-Momentum Potentials with Smooth Cutoffs
Creators: name: Bogner, S. K.
name: Furnstahl, R. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recent variational calculations of the deuteron and the triton illustrate that simple wave function ansatze become more effective after evolving the nucleon-nucleon potential to lower momentum (``V_lowk''). However, wave function artifacts from the use of sharp cutoffs in relative momentum decrease effectiveness for small cutoffs (< 2 fm^-1) and slow down convergence in harmonic oscillator bases. These sharp cutoff artifacts are eliminated when V_lowk is generated using a sufficiently smooth cutoff regulator.
description: 11 pages, 4 figures
Towards the processing, review, and delivery of 80% of the ALMA data by the Joint ALMA Observatory (JAO)
Creators: name: Yus, Jorge F. García
name: Dent, Bill
name: Brisbin, Drew
name: Chang, Chin-Shin
name: Gómez, Laura
name: Nakos, Theodoros
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: After eight observing Cycles, the Atacama Large Millimeter-submillimeter Array (ALMA) is capable of observing in eight different bands (covering a frequency range from 84 to 950 GHz), with 66 antennas and two correlators. For the current Cycle (7), ALMA offers up to 4300 hours for the 12-m array, and 3000 hours on both the 7-m of the Atacama Compact Array (ACA) and TP Array plus 750 hours in a supplemental call. From the customer perspective (i.e., the astronomical community), ALMA is an integrated product service provider, i.e. it observes in service mode, processes and delivers the data obtained. The Data Management Group (DMG) is in charge of the processing, reviewing, and delivery of the ALMA data and consists of approximately 60 experts in data reduction, from the ALMA Regional Centers (ARCs) and the Joint ALMA Observatory (JAO), distributed in fourteen countries. Prior to their delivery, the ALMA data products go through a thorough quality assurance (QA) process, so that the astronomers can work on their science without the need of significant additional calibration re-processing. Currently, around 90% of the acquired data is processed with the ALMA pipeline (the so called pipeline-able data), while the remaining 10% is processed completely manually. The Level-1 Key Performance Indicator set by the Observatory to DMG is that 90% of the pipeline-able data sets (i.e. some 80% of the data sets observed during an observing cycle) must be processed, reviewed and delivered within 30 days of data acquisition. This paper describes the methodology followed by the JAO in order to process near 80% of the total data observed during Cycle 7, a giant leap with respect to approximately 30% in Cycle 4 (October 2016 - September 2017).
description: 18 pages, 11 figures, SPIE conference on Astronomical Telescopes and Instrumentation
Light pseudoscalar eta and H->eta eta decay in the simplest little Higgs mode
Creators: name: Cheung, Kingman
name: Song, Jeonghyeon
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The SU(3) simplest little Higgs model in its original framework without the so-called mu term inevitably involves a massless pseudoscalar boson eta, which is problematic for b-physics and cosmological axion limit. With the mu term introduced by hand, the eta boson acquires mass m_eta ~ mu, which can be lighter than half the Higgs boson mass in a large portion of the parameter space. In addition, the introduced mu term generates sizable coupling of H-eta-eta. The Higgs boson can dominantly decay into a pair of eta's especially when mH below the WW threshold. Another new decay channel of H->Z+eta can be dominant or compatible with H -> WW for mH above the Z+eta threshold. We show that the LEP bound on the Higgs boson mass is loosened to some extent due to this new H->eta eta decay channel as well as the reduced coupling of H-Z-Z. The Higgs boson mass bound falls to about 110 GeV for f=3-4 TeV. Since the eta boson decays mainly into a bb pair, H-> eta eta -> 4b and H-> Z eta -> Z bb open up other interesting search channels in the pursuit of the Higgs boson in the future experiments. We discuss on these issues.
description: major modification considering the simplest little Higgs model with the mu term
ANATOMIK TERMINOLOGIYANI O'RGATISH: TIBBIY TA'LIMDA SAMARALI O'RGATISH STRATEGIYALARI
Creators: name: Anorboyeva, Dilshoda
Publisher: name: Zenodo
Year: 2024

description: Barcha tibbiyot xodimlari aloqada ajralmas vosita bo'lgan keng qamrovli anatomik atamalarni o'zlashtirishlari kerak.. 1998 yilda Anatomik terminologiya federativ qo'mitasi tomonidan chiqarilgan Terminologia Anatomica ning ilk nashri keng xalqaro e'tirofga sazovor bo'ldi. Shunga qaramay, ko'pgina mualliflarning fikricha, klinik va didaktik jihatdan foydali bo'lgan anatomik tuzilmalarning qismlari va segmentlari uchun aniq ta'riflar va haqiqiy nomlar anatomik nomenklaturaning kelgusi nashrlarida kiritilishi kerak. Shunday qilib, Terminologia Anatomica-ni takomillashtirish va kengaytirish anatomlarning kelajak avlodlari uchun qiyin vazifa bo'lib qolmoqda. Shu bilan birga, anatomik nomenklaturaning murakkab tabiati katta qiyinchilik tug‘diradi, chunki murakkab terminologiyani o‘rganish, eslab qolish va tushunish, ayniqsa, tibbiyot fakultetining talabalari va ushbu sohaga yangi kelganlar uchun qiyin vazifa bo‘lib, anatomik tilni soddalashtirish zarurligini ta’kidlaydi. Ushbu maqolaning maqsadi tibbiyot talabalarining inson anatomiyasi va uning terminologiyasini o'zlashtirishga intilayotganda ta'lim tajribasini oshirishga qaratilgan maxsus strategiyalarni o'rganishdir.
title: Ecosystem management: accessing data through integrative approaches
Creators: name: Begossi, Alpina
name: Salivonchyk, Svetlana V.
name: Lopes, Priscila F.
name: Silvano, Renato A. M.
Publisher: name: ASC 2013 - Theme session G
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Summary: Obtaining multiple data sources for ecosystem management requires multidisciplinary approaches. In this study methods to gather information on target fish and Brazilian small-scale fishermen’s strategies, across different scales and through integrative approaches are discussed. Method 1: optimal foraging models, on the choice of food extracted by coastal populations (Case 1) and on the fish chosen to be a target fish (Case 2); b) Method 2: sampling catches at landing points integrated with fisher’s local ecological knowledge. We focus on Epinehephelus marginatus (grouper) in Copacabana (Rio de Janeiro) and Bertioga (São Paulo) coasts (SE Brazil). (Case 3); Method 3: focusing on species that occupies a diversity of environments. Common snook (Centropomus undecimalis) uses an array of habitats to reproduce and complete its life cycle; it is also a target species in the fisheries. Polluted areas may impact the development of snook, (Case 4). Method 4: using GPS to gather spatial data. This method provides information on fishing spots and could help detect fish spawning aggregations (Case 5).
Large $N$-ightmare Dark Matter
Creators: name: Morrison, Logan
name: Profumo, Stefano
name: Robinson, Dean J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A dark QCD sector is a relatively minimal extension of the Standard Model (SM) that admits Dark Matter (DM) candidates but requires no portal to the visible sector beyond gravitational interactions: A "nightmare scenario" for DM detection. We consider a secluded dark sector containing a single flavor of light, vector-like dark quark gauged under $SU(N)$. In the large-$N$ limit, this single-flavor theory becomes highly predictive, generating two DM candidates whose masses and dynamics are described by few parameters: A light quark-antiquark bound state, the dark analog of the $η'$ meson, and a heavy bound state of $N$ quarks, the dark analog of the $Δ^{++}$ baryon. We show that the latter may freeze-in with an abundance independent of the confinement scale, forming DM-like relics for $N \lesssim 10$, while the former may generate DM via cannibalization and freeze-out. We study the interplay of this two-component DM system and determine the characteristic ranges of the confinement scale, dark-visible sector temperature ratio, and $N$ that admit non-excluded DM, once the effects of self-interaction constraints and bounds on effective degrees of freedom at the BBN and CMB epochs are included.
description: 28 pages, 6 figures
The Field Perturbation Theory of Pseudogaps in HTSC
Creators: name: Dayan, Moshe
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Here I establish the field perturbation theory of pseudogaps in HTSC. The proposed ground state suggests an internal particle-hole field, which is normal to nesting surfaces, and having twice the Fermi wave-number. It is proved that the system violates momentum conservation by the wave-vector of this internal field. This violation applies to the quasi-particle propagators, as well as to the interactions. Interaction vertices via the Pauli matrix- are established. This, in turn, establishes the validity of the pseudogap Hartree self-energy.
Engaging Software Engineering Students in Grading: The effects of peer assessment on self-evaluation, motivation, and study time
Creators: name: Groeneveld, Wouter
name: Vennekens, Joost
name: Aerts, Kris
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Peer assessment is a popular technique for a more fine-grained evaluation of individual students in group projects. Its effect on the evaluation is well studied. However, its effects on the learning abilities of students are often overlooked. In this paper, we explore self-evaluation, motivation, and study time of students in relation to peer assessment, as part of an ongoing project at our local Faculty of Engineering Technology. The aggregated measurements of two years so far show that: (1) students get much better at evaluating their own project on some, but not all, of the evaluation criteria after a peer assessment session, (2) students report in a follow-up survey that they are more motivated to work on their project, and (3) the relation between motivation and time spent on the project increases. These results suggest that peer grading could have positive long-term effects on the reflective, and therefore lifelong learning, skills of students. A better understanding of the evaluation criteria results in more accurate self and peer grades, emphasizing the importance of properly defining and communicating these criteria throughout the semester.
title: Ecosystem-based approach to chemicals management in marine ecosystems: Case of the Baltic Sea chemicals management
Creators: name: Udovyk, Oksana
Publisher: name: ASC 2013 - Theme session G
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. The study examines risk-based chemicals control system utilized in EU, its possibilities, its problems and its applicability and relevance for the marine management. It argues that the current approach to chemicals management in marine environment underestimates the scale, complexity, and diversity of the problem. Existing management system is pervaded with contradictions, where the accumulation of knowledge only serves to increase uncertainty. Fundamental shifts in the mode of chemical assessment and policy are required; new frameworks suggest an ecosystem-based approach to chemicals management in marine ecosystems
Inference and Evaluation of the Multinomial Mixture Model for Text Clustering
Creators: name: Rigouste, Loïs
name: Cappé, Olivier
name: Yvon, François
Publisher: name: arXiv
Year: 2006
Subjects: subject: Information Retrieval (cs.IR)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: In this article, we investigate the use of a probabilistic model for unsupervised clustering in text collections. Unsupervised clustering has become a basic module for many intelligent text processing applications, such as information retrieval, text classification or information extraction. The model considered in this contribution consists of a mixture of multinomial distributions over the word counts, each component corresponding to a different theme. We present and contrast various estimation procedures, which apply both in supervised and unsupervised contexts. In supervised learning, this work suggests a criterion for evaluating the posterior odds of new documents which is more statistically sound than the "naive Bayes" approach. In an unsupervised context, we propose measures to set up a systematic evaluation framework and start with examining the Expectation-Maximization (EM) algorithm as the basic tool for inference. We discuss the importance of initialization and the influence of other features such as the smoothing strategy or the size of the vocabulary, thereby illustrating the difficulties incurred by the high dimensionality of the parameter space. We also propose a heuristic algorithm based on iterative EM with vocabulary reduction to solve this problem. Using the fact that the latent variables can be analytically integrated out, we finally show that Gibbs sampling algorithm is tractable and compares favorably to the basic expectation maximization approach.
Heteronuclear ionizing collisions between laser-cooled metastable helium atoms
Creators: name: McNamara, J. M.
name: Stas, R. J. W.
name: Hogervorst, W.
name: Vassen, W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We have investigated cold ionizing heteronuclear collisions in dilute mixtures of metastable (2 3S1) 3He and 4He atoms, extending our previous work on the analogous homonuclear collisions [R. J. W. Stas et al., PRA 73, 032713 (2006)]. A simple theoretical model of such collisions enables us to calculate the heteronuclear ionization rate coefficient, for our quasi-unpolarized gas, in the absence of resonant light (T = 1.2 mK): K34(th) = 2.4*10^-10 cm^3/s. This calculation is supported by a measurement of K34 using magneto-optically trapped mixtures containing about 1*10^8 atoms of each species, K34(exp) = 2.5(8)*10^-10 cm^3/s. Theory and experiment show good agreement.
description: 8 pages, 6 figures
title: Integrating scientific efforts among regional areas of the Atlantic and the Mediterranean towards EBM: the WGCOMEDA initiative
Creators: name: Coll, Marta
name: Hidalgo, Manuel
Publisher: name: ASC 2013 - Theme session G
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Harmonizing data and initiatives to move forward the Ecosystem-based Approach to Fisheries (EAF) and the Ecosystem-Based Management (EBM) in European Seas is a current challenge. This process should be assisted by the integrative combination of collaborative pan-European platforms of research that address crucial scientific questions filling fundamental gaps for different regions. The “Working Group on Comparative Analyses between European Atlantic and Mediterranean marine ecosystems to move towards an Ecosystem-based Approach to Fisheries” (WGCOMEDA) was recently established to integrate knowledge and resources from different areas of the Atlantic and Mediterranean, with emphasis on European Seas. The initiative aims at strengthening the scientific basis for regional and integrated ecosystem approaches using a comparative platform of research. This is essential to harmonize and integrate our knowledge on how Atlantic and Mediterranean ecosystems are structured, how they function and how they react to external stressors. WGCOMEDA will investigate cross-systems and system-specific key scientific questions using existing data and analyses. The work plan for 2014 includes (1) the comparative synthesis of current data and tools, and (2) the identification of sensitive ecological processes and functions to climate variability and fishing impact. This new initiative seeks the participation and collaboration of proactive scientists and initiatives in the region.
Spectroscopy of superconducting charge qubits coupled by a Josephson inductance
Creators: name: Yamamoto, T.
name: Watanabe, M.
name: You, J. Q.
name: Pashkin, Yu. A.
name: Astafiev, O.
name: Nakamura, Y.
name: Nori, F.
name: Tsai, J. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have designed and experimentally implemented a circuit of inductively-coupled superconducting charge qubits, where a Josephson junction is used as an inductance, and the coupling between the qubits is controlled by an applied magnetic flux. Spectroscopic measurements on the circuit are in good agreement with theoretical calculations. We observed anticrossings which originate from the coupling between the qubit and the plasma mode of the Josephson junction. Moreover, the size of the anticrossing depends on the external magnetic flux, which demonstrates the controllability of the coupling.
description: Accepted for publication in PRB. 11 pages, 7 figures
title: Olrac-RTI: A new and operational approach to holistic management of fisheries for multiple commercial species and ecosystem objectives. Part 1.
Creators: name: Kraak, Sarah B. M.
name: Reid, Dave G.
name: Barkai, Amos
name: Meredith, Guy
name: Felaar, Fatima
Publisher: name: ASC 2013 - Theme session G
Year: 2024
Subjects: Ecosystem observation, processes and dynamics
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. The recently proposed Real-Time Incentives (RTI) fisheries management approach (http://icesjms.oxfordjournals.org/content/69/4/590) integrates mixed-fisheries targets and ecosystem objectives into a single „currency‟ for management measures. In this approach, fishermen would be allocated fishing-impact credits, called RTIs, to spend according to spatiotemporally varying tariffs, replacing the conventional landings quota. RTI-quotas and tariffs would be based on commercial stock and ecosystem targets, using a tested algorithm so that the spatiotemporal tariffs reflect our understanding of the exploited ecosystem. The fisherman could dynamically choose how to spend his RTIs, e.g. by limited fishing in sensitive areas and fishing longer in less sensitive areas. The RTI-tariffs would be gear and vessel-type specific. Olrac SPS has developed and manufactured a complete electronic logbook and vessel tracking and data recording and reporting system (Dynamic Data Logger, DDL) linked to an onshore data management system (Dynamic Data Manager, DDM). Olrac SPS is now developing a customised version of DDL-DDM to suit the requirements of the RTI approach. The system will provide the onboard software with the up-to-date tariff maps. Once a fishing trip has started the Olrac DDL will record the time the vessel spent in each of predefined RTI management rectangles. This information will be sent to the Olrac DDM and will be used together with any available VMS data to automatically calculate the amount of RTIs utilised by the vessel during its fishing trip. This amount will then be automatically deducted from the vessel‟s annual RTI-account. Olrac DDM will also integrate the vessels‟ reported catch data from the Olrac DDL vessel units and combine them, using a tested algorithm, to update the spatial tariffs as appropriate, so that the updated tariff maps could reflect our understanding of the exploited ecosystem. Olrac DDM will also provide the managers with detailed and summary reports of RTI uptake and reported catches in time and space. This management approach provides fishermen with a practical and simple management regime, in contrast to the current micro-management.
Searching for New Interactions at Sub-micron Scale Using the Mossbauer Effect
Creators: name: Gratta, Giorgio
name: Kaplan, David E.
name: Rajendran, Surjeet
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A new technique to search for new scalar and tensor interactions at the sub-micrometer scale is presented. The technique relies on small shifts of nuclear gamma lines produced by the coupling between matter and the nuclei in the source or absorber of a Mossbauer spectrometer. Remarkably, such energy shifts are rather insensitive to electromagnetic interactions that represent the largest background in searches for new forces using atomic matter. This is because nuclei are intrinsically shielded by the electron clouds. Additionally, electromagnetic interactions cause energy shifts by coupling to nuclear moments that are suppressed by the size of the nuclei, while new scalar interactions can directly affect these shifts. Finally, averaging over unpolarized nuclei, further reduces electromagnetic interactions. We discuss several possible configurations, using the traditional Mossbauer effect as well as nuclear resonant absorption driven by synchrotron radiation. For this purpose, we examine the viability of well known Mossbauer nuclides along with more exotic ones that result in substantially narrower resonances. We find that the technique introduced here could substantially improve the sensitivity to a variety of new interactions and could also be used, in conjunction with mechanical force measurements, to corroborate a discovery or explore the new physics that may be behind a discovery.
description: 11 pages, 7 figures
String Bracket and Flat Connections
Creators: name: Abbaspour, Hossein
name: Zeinalian, Mahmoud
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Topology (math.AT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 55P35,57R19,58A10,57R22,57N65, 55N33,55N91

description: Let $G \to P \to M$ be a flat principal bundle over a closed and oriented manifold $M$ of dimension $m=2d$. We construct a map of Lie algebras $Ψ: \H_{2\ast} (L M) \to ø(\Mc)$, where $\H_{2\ast} (LM)$ is the even dimensional part of the equivariant homology of $LM$, the free loop space of $M$, and $\Mc$ is the Maurer-Cartan moduli space of the graded differential Lie algebra $Ω^\ast (M, \adp)$, the differential forms with values in the associated adjoint bundle of $P$. For a 2-dimensional manifold $M$, our Lie algebra map reduces to that constructed by Goldman in \cite{G2}. We treat different Lie algebra structures on $\H_{2\ast}(LM)$ depending on the choice of the linear reductive Lie group $G$ in our discussion.
description: 28 pages. This is the final version