cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
On Toda Equation and Half BPS Supergravity Solution in M-Theory
Creators: name: Ganjali, Mohammad A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, it was shown that half BPS Supergravity solution of theories with SU(2$|$4) symmetry algebra is given uniformly by determining a single function which obeys three dimensional continuous Toda equation. In this paper, we study the scale invariant solution of Toda equation. Our motivation is that some solutions of half BPS sector of IIB supergravity, as one excepts from the fermion description of the theory, are scale invariant. By defining two auxiliary functions we prove that such solutions of Toda equation obey cubic algebraic equation. We obtain some simpl solutions of Toda equation specially, we observe that the PP-wave solution can be written in this fashion.
description: 13 pages, no figures
Mapping the Schrodinger picture of open quantum dynamics
Creators: name: Jordan, Thomas F.
name: Shaji, Anil
name: Sudarshan, E. C. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For systems described by finite matrices, an affine form is developed for the maps that describe evolution of density matrices for a quantum system that interacts with another. This is established directly from the Heisenberg picture. It separates elements that depend only on the dynamics from those that depend on the state of the two systems. While the equivalent linear map is generally not completely positive, the homogeneous part of the affine maps is, and is shown to be composed of multiplication operations that come simply from the Hamiltonian for the larger system. The inhomogeneous part is shown to be zero if and only if the map does not increase the trace of the square of any density matrix. Properties are worked out in detail for two-qubit examples.
description: 10 pages, 3 Figures, Accepted for publication in Phys. Rev. A
Sea wave data reconstruction using micro-seismic measurements and machine learning methods
Creators: name: Iafolla, Lorenzo
name: Fiorenza, Emiliano
name: Chiappini, Massimo
name: Carmisciano, Cosmo
name: Iafolla, Valerio Antonio
Publisher: name: arXiv
Year: 2024
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Machine Learning (cs.LG)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Sea wave monitoring is key in many applications in oceanography such as the validation of weather and wave models. Conventional in situ solutions are based on moored buoys whose measurements are often recognized as a standard. However, being exposed to a harsh environment, they are not reliable, need frequent maintenance, and the datasets feature many gaps. To overcome the previous limitations, we propose a system including a buoy, a micro-seismic measuring station, and a machine learning algorithm. The working principle is based on measuring the micro-seismic signals generated by the sea waves. Thus, the machine learning algorithm will be trained to reconstruct the missing buoy data from the micro-seismic data. As the micro-seismic station can be installed indoor, it assures high reliability while the machine learning algorithm provides accurate reconstruction of the missing buoy data. In this work, we present the methods to process the data, develop and train the machine learning algorithm, and assess the reconstruction accuracy. As a case of study, we used experimental data collected in 2014 from the Northern Tyrrhenian Sea demonstrating that the data reconstruction can be done both for significant wave height and wave period. The proposed approach was inspired from Data Science, whose methods were the foundation for the new solutions presented in this work. For example, estimating the period of the sea waves, often not discussed in previous works, was relatively simple with machine learning. In conclusion, the experimental results demonstrated that the new system can overcome the reliability issues of the buoy keeping the same accuracy.
On nuclear coalescence in small interacting systems
Creators: name: Kachelriess, M.
name: Ostapchenko, S.
name: Tjemsland, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The formation of light nuclei can be described as the coalescence of clusters of nucleons into nuclei. In the case of small interacting systems, such as dark matter and $e^+e^-$ annihilations or $pp$ collisions, the coalescence condition is often imposed only in momentum space and hence the size of the interaction region is neglected. On the other hand, in most coalescence models used for heavy ion collisions, the coalescence probability is controlled mainly by the size of the interaction region, while two-nucleon momentum correlations are either neglected or treated as collective flow. Recent experimental data from $pp$ collisions at LHC have been interpreted as evidence for such collective behaviour, even in small interacting systems. We argue that these data are naturally explained in the framework of conventional QCD inspired event generators when both two-nucleon momentum correlations and the size of the hadronic emission volume are taken into account. To include both effects, we employ a per-event coalescence model based on the Wigner function representation of the produced nuclei states. This model reproduces well the source size for baryon emission and the coalescence factor $B_2$ measured recently by the ALICE collaboration in $pp$ collisions.
description: 9 pages, 6 pdf figures; v2: minor changes, added references, accepted version
Nanophotonic enhancement and improved electron extraction in perovskite solar cells using near-horizontally aligned TiO2 nanorods
Creators: name: Kumar, Pawan
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: 30401 Biologically Active Molecules
subject: FOS: Chemical sciences
subject: 30403 Characterisation of Biological Macromolecules
subject: 30601 Catalysis and Mechanisms of Reactions
subject: 30301 Chemical Characterisation of Materials
subject: 30602 Chemical Thermodynamics and Energetics
subject: Cheminformatics
subject: 39999 Chemical Sciences not elsewhere classified

description: While vertically oriented metal oxide nanowires have been intensely researched for use as electron transport layers (ETLs) in halide perovskite solar cells (HPSCs), horizontal nanowires (oriented roughly parallel to the substrate) have received much less attention despite their higher photonic strength due to overlapping electric and magnetic dipolar Mie resonance modes. Herein, we demonstrate the fabrication of an assembly of horizontally aligned TiO2 nanorods (HATNRs) on FTO substrates via a facile hydrothermal route. The HATNRs are employed as the ETL to achieve 15.03% power conversion efficiency (PCE) in
Quality of Available Mates, Education and Intra-Household Bargaining Power
Creators: name: Bercea, Brighita
name: Oreffice, Sonia
name: Bercea, Brighita
name: Oreffice, Sonia
Publisher: name: Unknown
Year: 2006
Subjects: Consumer/Household Economics

description: This paper further explores the role of sex ratios on spouses' bargaining power, by focusing on educational attainment in order to capture the qualitative aspect of mate availability. Using Census and Current Population Survey data for U.S. metropolitan areas in year 2000, a quality sex ratio is constructed by education brackets to test the effect on the intra-household bargaining power of couples in the corresponding education bracket. We argue that a relative shortage of suitably educated women in the spouses potential marriage market increases wives' bargaining power in the household while it lowers their husbands'. Additionally, we test the prediction that this bargaining power effect is greater as the assortative mating order by education increases. We consider a collective labor supply household model, in which each spouse's labor supply is negatively related to their level of bargaining power. We find that higher relative shortage of comparably educated women in the couple's metropolitan area reduces wives' labor supply and increases their husbands. Also, the labor supply impact is stronger for couples in higher education groups. No such effects are found for unmarried individuals, which is consistent with bargaining theory.
Effect of weak magnetic field on polariton-electron scattering in semiconductor microcavities
Creators: name: Bilykh, V. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We theoretically calculate the polariton linewidth associated with the polariton-electron scattering in a microcavity in presence of a magnetic field perpendicular to the microcavity plane. It is shown that the polariton linewidth oscillates as a function of the magnetic field magnitude and the polariton-electron scattering rate can be not only decreased but also increased by the magnetic field. The possible applications of such an effect are discussed.
description: LaTex, 6 pages, 3 figures
Entropic Causal Inference for Neurological Applications
Creators: name: Fish, Jeremie
name: DeWitt, Alexander
name: AlMomani, Abd AlRahman R.
name: Laurienti, Paul J.
name: Bollt, Erik
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Dynamical Systems (math.DS)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: The ultimate goal of cognitive neuroscience is to understand the mechanistic neural processes underlying the functional organization of the brain. Key to this study is understanding structure of both the structural and functional connectivity between anatomical regions. In this paper we follow previous work in developing a simple dynamical model of the brain by simulating its various regions as Kuramoto oscillators whose coupling structure is described by a complex network. However in our simulations rather than generating synthetic networks, we simulate our synthetic model but coupled by a real network of the anatomical brain regions which has been reconstructed from diffusion tensor imaging (DTI) data. By using an information theoretic approach that defines direct information flow in terms of causation entropy (CSE), we show that we can more accurately recover the true structural network than either of the popular correlation or LASSO regression techniques. We demonstrate the effectiveness of our method when applied to data simulated on the realistic DTI network, as well as on randomly generated small-world and Erdös-Rényi (ER) networks.
Unraveling the World-Wide Pollution Haven Effect
Creators: name: Grether, Jean-Marie
name: Mathys, Nicole A.
name: De Melo, Jaime
name: Grether, Jean-Marie
name: Mathys, Nicole A.
name: De Melo, Jaime
Publisher: name: Unknown
Year: 2006
Subjects: Environmental Economics and Policy

description: This paper contributes to the debate on the existence of pollution haven effects by systematically measuring the pollution content of trade (measured by the polluction content of imports (PCI)) and decomposing it into three components: a 'deep' (i.e. unrelated to the environmental debate) component and two components (factor endowments and environmental policies) that occupy centerstage in the debate on trade and the environment. The decomposition is carried out for 1986-88 for an extensive data set covering 10 pollutants, 48 countries and 79 ISIC 4-digit sectors. Illustrative decompositions presented for 3 of the 10 pollutants in the data set indicate a significant pollution haven effect and highlight the role of factor endowments in each region's PCI. However, because the bulk of trade is intra-regional with a high North-North share, these effects are small relative to the 'deep' determinants of the worldwide pollution content of trade.
New methods for modal decomposition in multi-mode fibres
Creators: name: Blin, S.
name: Nguyen, T.
name: Nguyen, D.
name: Rochard, P.
name: Provino, L.
name: Monteville, A.
name: Robin, T.
name: Mugnier, A.
name: Cadier, B.
name: Pureur, D.
name: Thual, Monique
name: Chartier, T.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose and demonstrate two methods for modal decomposition in multi-mode fibres. Linearly polarized modes propagating in a slightly multi-mode fibre are easily retrieved from intensity measurements at the fibre output surface. The first method is an improvement of the so-called spectrally and spatially imaging technique, which is limited to largemode-area optical fibers. The second method is a new, simpler and faster solution for the characterization of any kind of optical fibre, thus attractive in comparison to previously reported methods, which are cumbersome, time-consuming and/or limited to large-more-area fibres. Different kinds of multi-mode optical fibres are characterized. A large-modearea photonic-bandgap fibre, a photonic-crystal small-core non-linear fibre, and a standard index-stepped multi-mode fibre are characterized successfully.
Chain Networks as a Leverage for Innovation Capacity: The Case of Food SMEs
Creators: name: Kühne, Bianka
name: Gellynck, Xavier
Publisher: name: CentMA
Year: 2010
Subjects: innovation capacity; chain network; SMEs; food sector

description: Nowadays, innovation is no longer limited to the individual firm but involves increasingly the chain network in which the firm is embedded. The chain network is considered as the place where the internal and external resources of a firm are combined and transformed, leading to innovation capacity. In the increasingly globalizing market, innovation is an important strategic tool for small and medium sized enterprises (SMEs) to achieve competitive advantage. However, SMEs are often confronted with barriers for developing and introducing innovations, such as the lack of economies of scale.
Our paper investigates how the chain network is contributing to the enhancement of the innovation capacity and which chain network characteristics are crucial in this process. In contrast to previous studies at chain network level, in our research specific chain networks are investigated and compared to each other. Hence, data collection took place at different chain network levels, being the supplier, the food manufacturer and the customer, working together and consequently belonging to one specific and unique chain network.

The analysis of innovation capacity at the chain network level is realized by means of cluster analysis. This results in a three-cluster solution dividing the sample into Non-innovator chain networks, Customer-driven innovator chain networks and food manufacturer-supplier-driven innovator chain networks. Next, the influence of the chain network on the innovation capacity is examined. Thereby, the three achieved clusters differ significantly related to certain chain network characteristics. The following characteristics form an important leverage for the innovation capacity: firm size, profitability and business growth of the chain network members, as well as higher dependency, and lower levels of integration, rewarding power, social satisfaction and collaboration. The distinction of Customer-driven and food manufacturer-supplier-driven innovator chain networks reveals that the involvement of the chain network partners for the enhancement of the innovation capacity is a very important aspect. In future research, the degree of complexity of the studied system should gradually be increased, namely from a chain network of three members to more complex chain networks.
description: International Journal on Food System Dynamics, Vol 1, No 4 (2010)
Constrained Probabilistic Movement Primitives for Robot Trajectory Adaptation
Creators: name: Frank, Felix
name: Paraschos, Alexandros
name: van der Smagt, Patrick
name: Cseke, Botond
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Placing robots outside controlled conditions requires versatile movement representations that allow robots to learn new tasks and adapt them to environmental changes. The introduction of obstacles or the placement of additional robots in the workspace, the modification of the joint range due to faults or range-of-motion constraints are typical cases where the adaptation capabilities play a key role for safely performing the robot's task. Probabilistic movement primitives (ProMPs) have been proposed for representing adaptable movement skills, which are modelled as Gaussian distributions over trajectories. These are analytically tractable and can be learned from a small number of demonstrations. However, both the original ProMP formulation and the subsequent approaches only provide solutions to specific movement adaptation problems, e.g., obstacle avoidance, and a generic, unifying, probabilistic approach to adaptation is missing. In this paper we develop a generic probabilistic framework for adapting ProMPs. We unify previous adaptation techniques, for example, various types of obstacle avoidance, via-points, mutual avoidance, in one single framework and combine them to solve complex robotic problems. Additionally, we derive novel adaptation techniques such as temporally unbound via-points and mutual avoidance. We formulate adaptation as a constrained optimisation problem where we minimise the Kullback-Leibler divergence between the adapted distribution and the distribution of the original primitive while we constrain the probability mass associated with undesired trajectories to be low. We demonstrate our approach on several adaptation problems on simulated planar robot arms and 7-DOF Franka-Emika robots in a dual robot arm setting.
description: There is a supplementary video accompanying the paper. It can be found at https://youtu.be/7UI6QX-eZ3I
จรรยาบรรณของผู้สอบบัญชี และความน่าเชื่อถือในการสอบบัญชีที่มีอิทธิพลต่อคุณภาพของงานสอบบัญชีของผู้สอบบัญชีรับอนุญาตในประเทศไทย
Creators: name: จุฬาสิณี ริ้วเจริญฤทธิ์กุล
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2567
Subjects: จรรยาบรรณของผู้สอบบัญชี
ความน่าเชื่อถือ
คุณภาพงานสอบบัญชี

description: วารสารชุมชนวิจัยและพัฒนาสังคม, 18, 3, 363-380
Near IR diffraction-limited integral-field SINFONI spectroscopy of the Circinus galaxy
Creators: name: Sanchez, F. Mueller
name: Davies, R. I.
name: Eisenhauer, F.
name: Tacconi, L. J.
name: Genzel, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using the adaptive optics assisted near infrared integral field spectrometer SINFONI on the VLT, we have obtained observations of the Circinus galaxy on parsec scales. The morphologies of the H_2(1-0)S(1) 2.12um and Br_gamma 2.17um emission lines are only slightly different, but their velocity maps are similar and show a gradient along the major axis of the galaxy, consistent with rotation.Since V_rot/sigma is approximately 1 suggests that random motions are also important, it is likely that the lines arise in a rotating spheroid or thickened disk around the AGN. Comparing the Br_gamma flux to the stellar continuum indicates that the star formation in this region began almost 10^8 yr ago. We also detect the [SiVI] 1.96um,[AlIX] 2.04um and [CaVIII] 2.32um coronal lines. In all cases we observe a broad blue wing, indicating the presence of two or more components in the coronal line region. A correlation between the ionisation potential and the asymmetry of the profiles was found for these high excitation species.
description: 6 pages, 5 figures, Submitted to the Proceedings of the IFS Workshop, Jul 4-8 2005, Durham, England
Frontier science in a quantum experiment: AEgIS at CERN
Creators: name: Kornakov, Georgy
name: Zieliński, Jakub
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Precise manipulation of matter at the atomic or molecular level has provided the path for the nanotechnological revolution impacting diverse fields such as biology, medicine, material science, quantum technologies, and electronics. At the Antiproton Decelerator facility at CERN, the AEgIS experiment utilises state-of-the-art technology to store and manipulate synthesised exotic atoms containing both matter and antimatter. Such experiments lay the groundwork for a better understanding of the fundamental interactions and hold the potential to unravel the enigma of the absence of antimatter in our universe. Additionally, the developed techniques advance the technological frontier of controlling the quantum states of ions, a critical aspect of quantum sensing and quantum computing applications.
HIV/AIDS Pandemic in Africa: Trends and Challenges
Creators: name: Luboobi, Livingstone S.
name: Mugisha, Joseph Y.T.
name: Luboobi, Livingstone S.
name: Mugisha, Joseph Y.T.
Publisher: name: Unknown
Year: 2005
Subjects: Health Economics and Policy

description: Three-quarters of the world's AIDS population lives in Sub-Saharan Africa; most have no access to lifesaving drugs, testing facilities or even basic preventive health care. One of the major factors inhibiting medical professionals in Africa from treating this disease is the inability to access vast areas of the continent with adequately equipped medical facilities. To meet this need, Architecture for Humanity challenged the world's architects and health care professionals to submit designs for a mobile HIV/AIDS health clinic. The pandemic is changing the demographic structure of Africa and wiping out life expectancy gains. Indeed, in many African countries, life expectancy is dropping from more than 60 years to around 45 years or even less. In this paper, we highlight the uniqueness of factors associated with HIV/AIDS pandemic in Africa and present its impact and challenges.
"ผู้นำชุมชน" กับ กระบวนการทำงานแบบมีส่วนร่วมกับชุมชนในการทำงานด้านยาเสพติดในชุมชนแห่งหนึ่งของกรุงเทพมหานคร
Creators: name: พุธันวา มหาทรัพย์สมบัติ
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2567
Subjects: กระบวนการมีส่วนร่วม
ยาเสพติด
ผู้นำชุมชน
กรุงเทพมหานคร

description: วารสารชุมชนวิจัยและพัฒนาสังคม, 18, 3, 381-396
Risk, Information, and Trust in the Food Chain: Factors Explaining Consumer Willingness to Pay
Creators: name: Latvala, Terhi
Publisher: name: CentMA
Year: 2010
Subjects: risk; trust; information; beef; willingness to pay

description: This paper analysed factors contributing to consumers’ willingness to pay (WTP) for increased quality information. The empirical scope of the study was restricted to beef, because the beef labelling system enables reliable tracing of quality attributes. The results showed that consumer perceptions of specific risks in food partly explain their WTP. Also negative experiences heard from other people increased the probability of WTP. Trust seems to be extremely significant factor in WTP models. This study implies that the majority of the respondents trust the food safety authorities and the co-operation of all stakeholders in the food chain.
description: International Journal on Food System Dynamics, Vol 1, No 4 (2010)
Inter-areal coordination of columnar architectures during visual cortical development
Creators: name: Kaschube, Matthias
name: Schnabel, Michael
name: Löwel, Siegrid
name: Wolf, Fred
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: The occurrence of a critical period of plasticity in the visual cortex has long been established, yet its function in normal development is not fully understood. Here we show that as the late phase of the critical period unfolds, different areas of cat visual cortex develop in a coordinated manner. Orientation columns in areas V1 and V2 become matched in size in regions that are mutually connected. The same age trend is found for such regions in the left and right brain hemisphere. Our results indicate that a function of critical period plasticity is to progressively coordinate the functional architectures of different cortical areas - even across hemispheres.
description: 30 pages, 1 table, 6 figures
title: Новгородская фразеологическая школа
Creators: name: Макаров, Владлен
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: В статье рассматривается понятие фразеологической школы. Выделяются критерии, по которым можно рассматривать формирование и деятельность фразеологической школы. Описываются исторический, географический, персональный, научно-теоретический аспекты понятия фразеологической школы. Подробно рассматривается деятельность Новгородской фразеологической школы, ее история, основные труды видных представителей, значимые теоретические положения, публикации, конференции, организатором которых выступила школа. Особое внимание уделяется деятельности основателя школы, доктора филологических наук, профессора В. П. Жукова. В обзор его деятельности входит описание как известных, признанных трудов В. П. Жукова, так и малодоступных на сегодня публикаций, тем не менее, важных для отражения теоретических взглядов ученого. Дается краткая характеристика таких важных для взглядов В. П. Жукова теоретических идей, как метод фразеологической аппликации, семантическая классификация компонентов фразеологической единицы, классификация пословиц и поговорок.
Prospects for a European Animal Welfare Label from the German Perspective: Supply Chain Barriers
Creators: name: Franz, Anabell
name: Von Meyer, Marie
name: Spiller, Achim
Publisher: name: CentMA
Year: 2010
Subjects: animal welfare; label; supply chain; neo-institutionalism

description: The Federal Government of Germany as well as the European Commission are discussing the establishment of an animal welfare label. This label should enable consumers to make a conscious purchasing decision on animal welfare products. Various studies show that many consumers (in Germany around 20 %) prefer products produced under animal friendly conditions. However, the supply of such products is limited. The following study examines the source of this discrepancy by way of an action-based analytical approach and identifies different barriers within the supply chain that prevent the establishment of a market segment for animal welfare products. Although consumer demand will be decisive for long-term success, first of all the stakeholders of the supply chain must be convinced. If the stakeholders are not prepared to participate in an animal welfare program the diffusion phase can take a very long time or even fail. This study presents such supply chain barriers and interprets them in the light of neo-institutionalism.
description: International Journal on Food System Dynamics, Vol 1, No 4 (2010)
Search for exotic contributions to atmospheric neutrino oscillations
Creators: name: Battistoni, G.
name: Becherini, Y.
name: Cecchini, S.
name: Cozzi, M.
name: Dekhissi, H.
name: Esposito, L.
name: Giacomelli, G.
name: Giorgini, M.
name: Mandrioli, G.
name: Manzoor, S.
name: Margiotta, A.
name: Patrizii, L.
name: Popa, V.
name: Sioli, M.
name: Sirri, G.
name: Spurio, M.
name: Togo, V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The energy spectrum of neutrino-induced upward-going muons in MACRO was analysed in terms of relativity principles violating effects, keeping standard mass-induced atmospheric neutrino oscillations as the dominant effect. The data disfavor these possibilities even at a sub-dominant level; stringent 90% C.L. limits are placed on the Lorentz invariance violation parameter $|Δv| < 6 \times 10^{-24}$ at $\sin 2θ_v$ = 0 and $|Δv| < 2.5 ÷5 \times 10^{-26}$ at $\sin 2θ_v$ = $\pm$1. The limits can be re-interpreted as bounds on the Equivalence Principle violation parameters.
description: Presented at the 29th I.C.R.C., Pune, India (2005)
Settling behaviour of thin curved particles in quiescent fluid and turbulence
Creators: name: Chan, Timothy T. K.
name: Esteban, Luis Blay
name: Huisman, Sander G.
name: Shrimpton, John S.
name: Ganapathisubramani, Bharathram
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The motion of thin curved falling particles is ubiquitous in both nature and industry but is not yet widely examined. Here, we describe an experimental study on the dynamics of thin cylindrical shells resembling broken bottle fragments settling through quiescent fluid and homogeneous anisotropic turbulence. The particles have Archimedes numbers based on the mean descent velocity $0.75 \times 10^4 \lesssim Ar \lesssim 2.75 \times 10^4$. Turbulence reaching a Reynolds number of $Re_λ\approx 100$ is generated in a water tank using random jet arrays mounted in a co-planar configuration. After the flow becomes statistically stationary, a particle is released and its three-dimensional motion is recorded using two orthogonally positioned high-speed cameras. We propose a simple pendulum model that accurately captures the velocity fluctuations of the particles in still fluid and find that differences in the falling style might be explained by a closer alignment between the particle's pitch angle and its velocity vector. By comparing the trajectories under background turbulence with the quiescent fluid cases, we measure a decrease in the mean descent velocity in turbulence for the conditions tested. We also study the secondary motion of the particles and identify descent events that are unique to turbulence such as 'long gliding' and 'rapid rotation' events. Lastly, we show an increase in the radial dispersion of the particles under background turbulence and correlate the timescale of descent events with the local settling velocity.
description: 26 pages, 18 figures, 5 movies
การศึกษาผลสัมฤทธิ์ทางการเรียนหน่วยการเรียนรู้ พุ่งเข้าชนกับผลของโมเมนตัม และความฉลาดรู้ด้านวิทยาศาสตร์ ของนักเรียนชั้นมัธยมศึกษาปีที่ 4 ที่เรียนด้วยการจัดการเรียนรู้โดยใช้ปรากฏการณ์เป็นฐานร่วมกับเทคนิคการคิด-พูด-เขียน
Creators: name: นิติภูมิ โด่งพิมาย
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2567
Subjects: ปรากฏการณ์เป็นฐาน
เทคนิคคิด-พูด-เขียน
ความฉลาดรู้ด้านวิทยาศาสตร์

description: วารสารชุมชนวิจัยและพัฒนาสังคม, 18, 3, 397-411
Value Sharing and Food System Dynamics for Milk, Tomato, and Cereals food Chains
Creators: name: Bertazzoli, Aldo
name: Ghelfi, Rino
name: Rivaroli, Sergio
name: Samoggia, Antonella
Publisher: name: CentMA
Year: 2010
Subjects: food chain; value system; economic performance; potato; fruit, cheese

description: The aim of the paper is to analyse value sharing and food system dynamics of milk, tomato, and cereals food chains, so to explore the agro-food enterprises capacity to be competitive and sustainable. The paper is based on the functionalist approach of Malassis and the notion of the system of the General Systems Theory. The methodology is aimed at creating a consolidated financial statement for each food chain so to re-create the chain value and identify how this is shared among the different food chain stages. The analysis is carried out on primary and secondary data: around 2400 financial statements concerning 480 enterprises from 2003 to 2007 and stakeholders’ interviews. Results show that value is usually created in the processing and distribution stages, to the detriment of the primary sector, and that the retail managing practices tend to impose damaging structural changes on farms whose profitability is at times becoming sustainable only thanks to European subsidies. To conclude, there is evidence of inadequate definition of strategic and network alliance along the chain. Competitiveness is still a concept achieved by single food chain stages against others and food chain internal competition entails a declining sustainability of small farms and enterprises.
description: International Journal on Food System Dynamics, Vol 1, No 4 (2010)
Choosing to Have Less Choice
Creators: name: Salgado, Maria
name: Salgado, Maria
Publisher: name: Unknown
Year: 2006
Subjects: Consumer/Household Economics

description: This paper investigates choice between opportunity sets. I argue that individuals may prefer to have fewer options for two reasons: First, smaller choice sets may provide information and reduce the need for the agent to contemplate the alternatives. Second, contemplation costs may be increasing in the size of the choice set, making smaller sets more desirable even when they do not provide any information to the agent. I identify which of these reasons drives individual behavior in a laboratory experiment. I find strong support for both the information and cognitive overload arguments. The effects do not disappear as participants gain experience with the task. Applications of these results include firms' choices of product variety, as costs increase with the number of products offered, and the design of government policies, such as the Medicare Drug Discount Card Program, in which older citizens can choose among numerous cards for discounts in prescription drugs.
Network Governance at the Firm and Network Level: Goals, Routines, and Social Mechanisms
Creators: name: Ziggers, Gerrit W.
name: Gagalyuk, Taras
name: Hanf, Jon
Publisher: name: CentMA
Year: 2010
Subjects: network governance; social network theory; governance mechanisms

description: This article contributes to the general understanding of governance in networks and the achievement of private and common goals.  Integrating transaction costs and social network theory, a simple integrated framework is provided for understanding why firms collaborate and under which conditions they establish durable networks that succeed in achieving goals. Network theory is extended by explicitly distinguishing between firm and network level governance, and by identifying governance mechanisms that adapt, coordinate, and safeguard customized exchanges. This way issues as how networks evolve, how they are governed, and ultimately, how collective outcomes might be generated can be better comprehended. This is especially relevant to policy planners and those having a perspective that goes beyond the performance of individual organizations.
description: International Journal on Food System Dynamics, Vol 1, No 4 (2010)
Italy's Privatization Process and Its Implications for China
Creators: name: Bortolotti, Bernardo
name: Bortolotti, Bernardo
Publisher: name: Unknown
Year: 2005
Subjects: Political Economy

description: This report provides an overview of the causes and consequences of the Italian State-owned Enterprises (SOE) reform process. Particularly, it analyzes the symbiotic link between share issue privatization (SIP), i.e. privatization in public equity markets, and financial market development, and shows how the sustained policy of sales has jumpstarted the Italian domestic stock market. Based on the Italian and international experience, the report provides some possible guidelines and policy recommendations in order to achieve the same goal in the People's Republic of China (PRC).
Dreier, Wilhelm, Kümmel, Reiner: Zukunft durch kontrolliertes Wachstum
Creators: name: Boeckler, Richard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 28 Nr. 3 (1979): Ökumenische Rundschau, Band 28, Heft 3
Particle acceleration, magnetic field generation, and emission in relativistic pair jets
Creators: name: Nishikawa, K. -I.
name: Hardee, P.
name: Hededal, C. B.
name: Richardson, G.
name: Sol, H.
name: Preece, R.
name: Fishman, G. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Shock acceleration is a ubiquitous phenomenon in astrophysical plasmas. Plasma waves and their associated instabilities (e.g., Buneman, Weibel and other two-stream instabilities) created in collisionless shocks are responsible for particle (electron, positron, and ion) acceleration. Using a 3-D relativistic electromagnetic particle (REMP) code, we have investigated particle acceleration associated with a relativistic jet front propagating into an ambient plasma. We find that the growth times of Weibel instability are proportional to the Lorentz factors of jets. Simulations show that the Weibel instability created in the collisionless shock front accelerates jet and ambient particles both perpendicular and parallel to the jet propagation direction.
description: 4 pages, 2 figures, submitted to Il nuovo cimento (4th Workshop Gamma-Ray Bursts in the Afterglow Era, Rome, 18-22 October 2004)
Hiding hot topics: science, sex and schooling in British Columbia, 1910-1916
Creators: name: Swann, Michelle
Publisher: name: University of British Columbia
Year: 2009

description: Between the years 1910-1916, the Vancouver Medical Association was responsible for designing a sex education program for the British Columbia Public School System. Through the course of the committee's work, the Vancouver Medical Association Sex Hygiene Committee (VMASHC) familiarised themselves with the teachings of the Sex Hygiene movement. The program which they recommend for implementation can be seen as representative of the second stage of North American sex education which advocated the teaching of sex education from the standpoint of biology. The VMASHC can be seen as a pioneer in the effort to teach sex education within Canadian schooling. Considerable time is spent contextualizing and explaining the impetus for the creating the first sex education program in British Columbia. The historical conditions and constraints involved in the birth of sex education are considered. It is argued that the social and political climate of early Vancouver played a direct role in influencing the VMASHC's final creation of what they called "a new line" of sex education in B.C.
The Rise of Accelerated Seasoned Equity Underwritings
Creators: name: Bortolotti, Bernardo
name: Megginson, William
name: Smart, Scott B.
name: Bortolotti, Bernardo
name: Megginson, William
name: Smart, Scott B.
Publisher: name: Unknown
Year: 2007
Subjects: Financial Economics

description: Seasoned equity offerings (SEOs) executed through accelerated underwritings have increased global market share recently, raising over $850 billion since 1998, and now account for over half (two-thirds) of the value of U.S. (European) SEOs. We examine 31,242 global SEOs, executed during 1991-2004, which raise over $2.9 trillion for firms and selling shareholders. Compared to fully marketed deals, accelerated offerings occur more rapidly, raise more money, and require fewer underwriters. Importantly, accelerated deals reduce total issuance cost by about 250 basis points. Accelerated deals sell equal fractions of primary and secondary shares, whereas in traditional SEOs primary shares dominate. Announcement period returns are comparable for traditional and accelerated offerings, while secondary and mixed offerings trigger more negative market responses than do primary offerings. We conclude that this rapid, worldwide shift towards accelerated underwriting creates a spot market for SEOs, and represents the long-predicted shift towards an auction model for seasoned equity sales.
รูปแบบการจัดการของผู้ประกอบการธุรกิจยูทูปเบอร์ด้านท่องเที่ยวและการบริการที่ประสบความสำเร็จในประเทศไทย
Creators: name: มัลลิกา คล้ายจาด
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2567
Subjects: ผู้มีอิทธิพลทางสื่อสังคมออนไลน์
ผู้ประกอบธุรกิจ
การท่องเที่ยวและบริการ
การจัดการความสำเร็จ

description: วารสารชุมชนวิจัยและพัฒนาสังคม, 18, 3, 412-431
Study of the axial U(1) anomaly at high temperature with lattice chiral fermions
Creators: name: Aoki, S.
name: Aoki, Y.
name: Cossu, G.
name: Fukaya, H.
name: Hashimoto, S.
name: Kaneko, T.
name: Rohrhofer, C.
name: Suzuki, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We investigate the axial U(1) anomaly of two-flavor QCD at temperatures 190--330 MeV. In order to preserve precise chiral symmetry on the lattice, we employ the Mobius domain-wall fermion action as well as overlap fermion action implemented with a stochastic reweighting technique. Compared to our previous studies, we reduce the lattice spacing to 0.07 fm, simulate larger multiple volumes to estimate finite size effect, and take more than four quark mass points, including one below physical point to investigate the chiral limit. We measure the topological susceptibility, axial U(1) susceptibility, and examine the degeneracy of U(1) partners in meson and baryon correlators. All the data above the critical temperature indicate that the axial U(1) violation is consistent with zero within statistical errors. The quark mass dependence suggests disappearance of the U(1) anomaly at a rate comparable to that of the SU(2)_L x SU(2)_R symmetry breaking.
description: 40 pages, 19 figures, the version published in PRD
Nonleptonic Weak Decays of B to D_s and D mesons
Creators: name: Thomas, C. E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Branching ratios and polarization amplitudes for B decaying to all allowed pseudoscalar, vector, axial-vector, scalar and tensor combinations of D_s and D mesons are calculated in the Isgur Scora Grinstein Wise (ISGW) quark model after assuming factorization. We find good agreement with other models in the literature and the limited experimental data and make predictions for as yet unseen decay modes. Lattice QCD results in this area are very limited. We make phenomenological observations on decays in to D_s(2317) and D_s(2460) and propose tests for determining the status and mixings of the axial mesons. We use the same approach to calculate branching ratios and polarization fraction for decays in to two D type mesons.
description: 21 pages, 9 figures. v3: updated to reflect changes in published paper, conclusions unchanged (see source file for details). Added comments on factorization. v2: experimental data updated, references added, tables of results added, more on axial D_s mixing, added section on D D decay modes and typos corrected
Traceability and Demand Sensitiveness: Evidences from Italian Fresh Potatoes Consumption
Creators: name: Caracciolo, Francesco
name: Cembalo, Luigi
Publisher: name: CentMA
Year: 2010
Subjects: traceability; early potato; censored demand system estimation; sample selection approach

description: When a traceability system takes place, either when mandatory or voluntary, many questions arise that need to be addressed and answered. One of the firsts concerns whether it introduces new costs with no gain in efficiency or, on the contrary, the system efficiency increases lowering costs and, as a consequence, market price of the good in hand. Among others, another issue that only rarely is addressed regards the effect of a price change on the final market. The objective of this paper was to simulate the effect on fresh Italian vegetables market of prices change due to a newer traceability procedure, focusing on early potato. Reasons why early potato was the main object of our study will be explained in detail later in the paper. Moreover, this study concerns a demand system estimation that has, as main goal, the measurement of own and cross price elasticities as well as expenditure elasticities. Such estimations are not strictly related with traceability because they measure any change in quantity demanded due to price changes due to any market perturbation. However, since early potato is experiencing a peculiar market and chain change in Italy, our simulation is meant to reason in terms of a “what if” approach, formally simulating the effect of any change in price due to an hypothesis of traceability system involved. In order to estimate a demand system, real household consumption data (3,000 observations) of a statistically representative sample of the Italian population of households was taken into account. Relevant measures of market variables were estimated by means of a Linear Almost Ideal Demand System implementing a large set of fresh vegetables: potato split in early and late, cabbage, salad, mushrooms, fruits vegetables, roots, asparagus, onion, tomatoes, peppers, cucumbers, beans, zucchinis and others.
description: International Journal on Food System Dynamics, Vol 1, No 4 (2010)
Valence Advantages and Public Goods Consumption: Does a Disadvantaged Candidate Choose an Extremist Position?
Creators: name: Soubeyran, Raphael
name: Soubeyran, Raphael
Publisher: name: Unknown
Year: 2006
Subjects: Political Economy

description: Does a disadvantaged candidate always choose an extremist program? When does a less competent candidate have an incentive to move to extreme positions in order to differentiate himself from the more competent candidate? If the answer to these questions were positive, as suggested in recent work (Ansolabehere and Snyder (2000), Aragones and Palfrey (2002), Groseclose (1999), and Aragones and Palfrey (2003)), this would mean that extremist candidates are bad politicians. We consider a two candidates electoral competition over public consumption, with a two dimensional policy space and two dimensions of candidates heterogeneity. In this setting, we show that the conclusion depends on candidates relative competences over the two public goods and distinguish between two types of advantages (an absolute advantage and comparative advantage in providing the two public goods).
Is there Need for more Transparency and Efficiency in Cause-related Marketing?
Creators: name: Langen, Nina
name: Grebitus, Carola
name: Hartmann, Monika
Publisher: name: CentMA
Year: 2010
Subjects: cause-related marketing; transparent labelling; donations efficiency

description: The popularity of ethical consumption increases. This has motivated firms to increasingly implement Cause-related Marketing (CrM) campaigns in Germany. But research reveals that especially German consumers are sceptic with regard to the amount of money spent for the good ‘cause’ by the enterprises. This can be explained by the small share of information provided by CrM campaigns to consumers. In consequence, this can reduce consumers’ willingness to purchase CrM products. Therefore, this study analyses whether the efficiency and transparency of a CrM campaign are important for consumers. The share of money reaching the cause relative to the product price consumers’ pay is taken as a proxy for efficiency while transparency is understood as the open communication of donated amounts on the product by label.
A consumer survey conducted in Germany in 2009 reveals that consumers have a great interest in the transparency of a CrM campaign. Furthermore, the study gives evidence that there is a gap between the levels of expected and requested efficiency of CrM donations. Consequently, firms should label the donation amount to meet consumers’ transparency needs. Furthermore, to create a successful CrM campaign companies also have to consider that the amount of money devoted to the good cause is of relevance for consumers.
description: International Journal on Food System Dynamics, Vol 1, No 4 (2010)
การมีส่วนร่วมอนุรักษ์พุทธศิลปกรรมเขาถมอรัตน์ อุทยานประวัติศาสตร์ศรีเทพ จังหวัดเพชรบูรณ์
Creators: name: พระสุธีวชิราภรณ์
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2567
Subjects: การมีส่วนร่วม
วัด
ชุมชน
การอนุรักษ์พุทธศิลปกรรม

description: วารสารชุมชนวิจัยและพัฒนาสังคม, 18, 3, 432-447