cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Near-band-edge photoluminescence in doped silicon : an investigation of BMEC and DA pair processes
Creators: name: Ziemelis, Ugis Oskars
Publisher: name: University of British Columbia
Year: 2010

description: This thesis deals with the study of two types of radiative recombination in silicon : a) donor-acceptor pair recombination (DAPR) and b) bound mu1tiexciton complex (BMEC) recombination: a) DAPR Work. New sharp line structure in the 1.6 to 20 K, near-band-edge photo-luminescence of Si(P,In) has been identified as due to radiative recombination of electrons bound to P donors with holes bound to In acceptors. This work represents the first study of sharp line, DAPR luminescence in an elemental semiconductor. Straightforward analysis assuming only Coulomb interactions between otherwise isolated impurity centres indicates that recombination involving P and In centres separated by distances ranging from 7.7 to 20 Å is responsible for the sharp line structure, which is observed superimposed on the high energy shoulder of the distant (average P-In separation : ~ 55 Å) pair band. Transient measurements reveal a decay pattern consistent with that expected for DAPR luminescence. Annealing and intentional doping behaviour has also been measured . BMEC Work. The Zeeman spectra of the α¹ to α⁴ photoluminescence lines of Si(P) and the Li¹ to Li⁴ photoluminescence lines of Si(Li ) have been measured as a function of temperature in the range 1.5 to 4.2 K. As expected on the basis of the Kirczenow BMEC shell model (SM), the thermalization behaviour indicated by the Si(P) spectra differs substantially from that indicated by the Si(Li ) spectra. This is related to the different valley-orbit state ordering of the two systems. The observed Zeeman sub-structure and thermalization behaviour in both the Si(P) and Si(Li ) systems is shown to be in very good agreement with the predictions of the SM. Specifically, the SM predicts two unique effects: no low temperature thermalization for the Zeeman sub-components of α⁴ and the disappearance of all the Zeeman sub-components of Li¹ at the lowest temperatures; these effects have both, been observed, A direct measurement of the free exciton (FE) ground state splitting, based on the observation of a resolved splitting of the FE[sup TA] luminescence band is discussed briefly. The splitting is found to be ΔE = 0.31 (+ 0.03 , - 0.06) meV .
ТАФТИШ ТАРТИБИДА ИШ ЮРИТИШНИНГ АЙРИМ МАСАЛАЛАРИ
Creators: name: Ажибеков, Айбек
Publisher: name: Zenodo
Year: 2025

description: Ушбу мақолада мамлакатимизда сўнги йилларда суд-ҳуқуқ соҳасида амалга оширилаятган ислоҳотлар, суд ишларини юритишда янги институтлар жорий этилганлиги, суд ҳужжатларини тафтиш тартибида қайта кўриш бўйича иш юритиш, тафтиш тартибида шикоят қилиш ҳуқуқи, тафтиш тартибидаги шикоятни кўрадиган судлар, тафтиш тартибида шикоят бериш муддати, тафтиш тартибида кўрилган ишлар сони, тафтиш тартибидаги шикоятни кўриш муддати ҳамда судлар томонидан иқтисодий ишларни тафтиш тартибида кўришнинг айрим масалалари ҳақида ёзилган.
Von der Bewahrung zur Online-Veröffentlichung in Museen und Sammlungen. Theorie und mögliche Praxis des ethischen Umgangs mit Daten über Sammlungsgut aus kolonialen Kontexten
Creators: name: Quade, Lisa
Publisher: name: Zenodo
Year: 2024
Subjects: Museum, Koloniale Kontexte, Sensible Sammlungsgüter, Ethik, CARE

description: Sammlungsgut aus kolonialen Kontexten findet sich in vielen deutschen Kulturerbeeinrichtungen. Debatten um Rückgabeforderungen und die Errichtung des Humboldt-Forums in Berlin haben in den letzten Jahren zu mehr Aufmerksamkeit für jene Kulturgüter in der Öffentlichkeit geführt. Ethische Aspekte beim Umgang mit ihnen rücken in der Museumsarbeit in den Fokus. Mit den CARE-Prinzipien wurde 2019 ein Konzept geschaffen, das die Beteiligung der Herkunftsgesellschaften vorsieht und sich an Institutionen richtet, die „indigene Daten” verwalten. Doch vor welchen Herausforderungen stehen Museen und Sammlungen, wenn sie diese Aspekte bei ihrer Arbeit berücksichtigen wollen? In diesem Beitrag werden theoretische Empfehlungen den praktischen Ansätzen aus sechs Einrichtungen gegenübergestellt, die sich mit diesen Fragen intensiv beschäftigt haben. Sie können als Anregung dienen, welche Wege des ethischen Umgangs es beim Sammeln, Bewahren, Ausstellen, Vermitteln und Forschen geben kann und welche Fragestellungen hierbei zu berücksichtigen sind.

Collection items from colonial contexts can be found in many German cultural heritage institutions. In recent years, debates about restitution claims and the establishment of the Humboldt Forum in Berlin have led to greater public awareness of these cultural assets. Ethical aspects in dealing with them are moving centre stage in museum work. With the CARE Principles, a concept was created in 2019 that provides for the participation of communities of origin and is aimed at institutions that manage ‘indigenous data’. But what challenges do museums and collections face if they want to take these aspects into account in their work? This article compares theoretical recommendations with practical approaches from six institutions that have worked intensively on these issues. They can serve as an inspiration as to what ethical approaches can be taken when collecting, preserving, exhibiting, communicating and researching and what issues need to be taken into account.
Humidity and temperature control in an evaporative cooling system of a poultry house
Creators: name: Kritsadang  Senawong
name: Sorayute Winitchai
name: Thana Radpukdee
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2012
Subjects: Sliding mode control,Evaporative cooling control,Poultry house

description: 1, 39, KKU Engineering Journal
Magnetocaloric properties of Fe_{2-x}T_xP (T = Ru and Rh) from electronic structure calculations and magnetisation measurements
Creators: name: Wiendlocha, B.
name: Tobola, J.
name: Kaprzyk, S.
name: Zach, R.
name: Hlil, E. K.
name: Fruchart, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: An analysis of the magnetocaloric properties of the pure and substituted Fe2P compounds is made based on KKR-CPA electronic structure calculations and magnetisation M(H,T) measurements. The computed electronic densities of states and magnetic moments are used to calculate both the values of the electronic and magnetic entropies, which fairly agree with the experimental findings. To enlighten the magnetic properties above Curie temperature, the paramagnetic state behaviours are simulated using the disordered local moments (DLM) concept. The KKR-CPA computations show, that in Fe2P, the Fe magnetic moment of the (3f) site disappears in the DLM state, while the moment of the (3g) site is only little lowered, comparison made with the low temperature ferromagnetic state.
description: 17 pages, 8 figures, Submitted to J. Phys. D
Modern Lower Bound Techniques in Database Theory and Constraint Satisfaction
Creators: name: Marx, Dániel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Complexity (cs.CC)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Conditional lower bounds based on $P\neq NP$, the Exponential-Time Hypothesis (ETH), or similar complexity assumptions can provide very useful information about what type of algorithms are likely to be possible. Ideally, such lower bounds would be able to demonstrate that the best known algorithms are essentially optimal and cannot be improved further. In this tutorial, we overview different types of lower bounds, and see how they can be applied to problems in database theory and constraint satisfaction.
description: PODS 2021 Tutorial
IMPTOX D2.2 - Project Website
Creators: name: Brancaleon, Riccardo
Publisher: name: Zenodo
Year: 2021

description: The present deliverable describes the results achieved within Task 2.2. “Communication Tools”. This task aims at developing a website to facilitate both, internal communication among the consortium members through a partner-only section, as well as external communication with stakeholders, the media and the general public. The website will support the work package leader and the members of the consortium throughout all three main tasks of this work-package: communication, dissemination and exploitation.
Probing charge dynamics in diamond with an individual color center
Creators: name: Gardill, A.
name: Kemeny, I.
name: Cambria, M. C.
name: Li, Y.
name: Dinani, H. T.
name: Norambuena, A.
name: Maze, J. R.
name: Lordi, V.
name: Kolkowitz, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Control over the charge states of color centers in solids is necessary in order to fully utilize them in quantum technologies. However, the microscopic charge dynamics of deep defects in wide-bandgap semiconductors are complex, and much remains unknown. Here, we utilize single shot charge state readout of an individual nitrogen-vacancy (NV) center to probe charge dynamics of the surrounding defects in diamond. We show that the NV center charge state can be converted through the capture of holes produced by optical illumination of defects many microns away. With this method, we study the optical charge conversion of silicon-vacancy (SiV) centers and provide evidence that the dark state of the SiV center under optical illumination is SiV2-. These measurements illustrate that charge carrier generation, transport, and capture are important considerations in the design and implementation of quantum devices with color centers, and provide a novel way to probe and control charge dynamics in diamond.
description: Main text: 18 pages, 4 figures, 32 references. Supporting Information: 20 pages, 9 figures, 2 tables, 12 references
Statistics of extremes by oracle estimation
Creators: name: Grama, Ion
name: Spokoiny, Vladimir
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62G32, 62G08 (Primary) 62G05 (Secondary)

description: We use the fitted Pareto law to construct an accompanying approximation of the excess distribution function. A selection rule of the location of the excess distribution function is proposed based on a stagewise lack-of-fit testing procedure. Our main result is an oracle type inequality for the Kullback--Leibler loss.
description: Published in at http://dx.doi.org/10.1214/07-AOS535 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
RESULTS OF USING ROTARY CULTIVATOR WORKING BODIES IN SOIL TILLAGE BETWEEN ROWS OF PLANTS.
Creators: name: Ermatov, V.A.
name: Batirov, B.K.
name: Zhong, Weizhou
name: Yang, Xueji
name: Guo, Fei
Publisher: name: Zenodo
Year: 2025

description: The article describes the analysis of agrotechnical indicators of new design rotary working bodies used for tillage and weed control between rows of plants. The structure, operational parameters and advantages of the rotary working body of the cultivator FAP02377, 2023 are explained by the results of experimental studies. It is shown that the use of the rotary working body in tillage between rows of plants allows for complete soil crushing and complete weed control in one tillage. Scientific conclusions are presented on the work performed.
Life cycle assessment for evaluating the energy balance of the multi-feedstock biodiesel production process in Indonesia
Creators: name: Wahyono, Yoyon
name: Hadiyanto, H.
name: Gheewala, Shabbir H.
name: Budihardjo, Mochamad Arief
name: Adiansyah, Joni
name: Widayat, Widayat
name: Christwardana, Marcelinus
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: This study aims to compare the energy balance of the production of biodiesel from multiple feedstocks to the production of biodiesel from palm oil in Indonesia. The energy balance study indicates that the biodiesel multi-feedstock plant is feasible to operate. The renewability of biodiesel from multiple feedstocks is 3.31 and that of palm oil biodiesel is 6.23. It is due to the fact that the energy content and demand of multi-feedstock biodiesel are much lower than palm oil biodiesel. The energy content of biodiesel from multiple feedstocks (and its co-products) is less than that of biodiesel from palm oil (and its co-products), 109,041 MJ vs 130,370 MJ, respectively. The energy demands for the production of biodiesel from multiple feedstocks and biodiesel from palm oil are 35 × 103 MJ and 23 × 103 MJ, respectively. Energy demands, including fossil and biomass, are attributable to plantation operations, including the usage of fertilisers. Plantations of multiple crops use more energy than plantations of oil palm alone because they require more fertilisers. It is not suggested to produce multi-feedstock biodiesel from sunflower, canola, and soybean since its energy balance is not better than biodiesel from palm oil.
Sweltsa resima Surdick 1995
Creators: name: Nye, Kelly C.
name: Stark, Bill P.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Chloroperlidae
Sweltsa
Sweltsa resima

description: Sweltsa resima Surdick (Figs. 13-18) Sweltsa resima Surdick, 1995:161. Holotype ♂ (United States National Museum), California, Inyo Co., Whitney Portal Material examined. CALIFORNIA: Inyo Co.: Division Creek, north of Independence, 7 June 1986, D. Giuliani, 2♂, 2♀ (MLBM). Lone Pine Creek, Whitney Portal, 36.34° N, 118.14° W, 28 July 2005, E. Drake, 8♂, 2♀ (KWS). Male epiproct. Total length ca. 600-654 µm, basal width ca. 230-260 µm, greatest width ca. 400-430 µm. Epiproct somewhat saggitate in outline with upturned tip and broad apically expanded mesal groove (Figs. 13-16). Dorsal surface bearing dense pile of short, multifilament setae (Fig. 17); ventral surface glabrous. Dorsal process. Located on tergum 9. Total width ca. 180-190 µm, median notch shallow, ca. 100-140 µm wide. Process broadly bilobed (Fig. 18). Comments. Surdick (1995) provides excellent illustrations of the epiproct of this species. Additional comments are given below.
description: Published as part of Nye, Kelly C. & Stark, Bill P., 2010, A Scanning Electron Microscopy Study Of The Epiprocts Of Western North American Sweltsa (Plecoptera: Chloroperlidae), pp. 248-255 in Illiesia 6 (18) on page 252, DOI: 10.5281/zenodo.4760011
description: {"references": ["Surdick, R. F. 1995. New western Nearctic Sweltsa (Plecoptera: Chloroperlidae). Proceedings of the Entomological Society of Washington, 97: 161 - 177."]}
Modified gravity with R-matter couplings and (non-)geodesic motion
Creators: name: Sotiriou, Thomas P.
name: Faraoni, Valerio
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider alternative theories of gravity with a direct coupling between matter and the Ricci scalar We study the relation between these theories and ordinary scalar-tensor gravity, or scalar-tensor theories which include non-standard couplings between the scalar and matter. We then analyze the motion of matter in such theories, its implications for the Equivalence Principle, and the recent claim that they can alleviate the dark matter problem in galaxies.
description: typos corrected, minor changes, version published in CQG
Optimisation of geometry and surface wettability for enhanced efficiency of the solar still-based desalination unit
Creators: name: Anand, Rajneesh
name: Mandal, Mrinal Kanti
name: Chaudhuri, Rajib Ghosh
name: Hens, Abhiram
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Evaporative solar desalination systems offer an economical method to produce pure water from brine solutions. In the present study, the effects of geometry (top surface inclination) and the surface wettability of the condensation plate on the performance of the basin-type solar desalination unit was investigated through the route of CFD (computational fluid dynamics) simulations. It was observed that inclination angle and surface patterning influence the overall rate of condensation. With the 26o top surface inclination, the rate of water production was 33.33% more than that of the 15o and 35o top surface inclinations. Surface wettability influences the production rate of pure water. A novel patterned condensation surface has been proposed, which can enhance the rate of condensation by 12.8% to produce more purified water. The patterned surface was obtained by placing alternate patches of hydrophilic and hydrophobic layers.
Solitary waves with intensity-dependent dispersion: variational characterization
Creators: name: Pelinovsky, D. E.
name: Ross, R. M.
name: Kevrekidis, P. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A continuous family of singular solitary waves exists in a prototypical system with intensity-dependent dispersion. The family has a cusped soliton as the limiting lowest energy state and is formed by the solitary waves with bell-shaped heads of different lengths. We show that this family can be obtained variationally by minimization of mass at fixed energy and fixed length of the bell-shaped head. We develop a weak formulation for the singular solitary waves and prove that they are stable under perturbations which do not change the length of the bell-shaped head. Numerical simulations confirm the stability of the singular solitary waves.
description: 15 pages, 7 figures
GGCHEMPY: A pure Python-based gas-grain chemical code for efficient simulation of interstellar chemistry
Creators: name: Ge, Jixing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this paper, we present a new gas-grain chemical code for interstellar clouds written in pure Python (GGCHEMPY). By combining with the high-performance Python compiler Numba, GGCHEMPY is as efficient as the Fortran-based version. With the Python features, flexible computational workflows and extensions become possible. As a showcase, GGCHEMPY is applied to study the general effects of three-dimensional projection on molecular distributions using a two-core system which can be easily extended for more complex cases. By comparing the molecular distribution differences between two overlapping cores and two merging cores, we summarized the typical chemical differences such as, N2H+, HC3N, C2S, H2CO, HCN and C2H, which can be used to interpret 3-D structures in molecular clouds.
description: Accepted for publication in RAA. GGCHEMPY is available on https://github.com/JixingGE/GGCHEMPY
title: Past, present and future of innovation agencies in Europe
Creators: name: Kattel, Rainer
Publisher: name: Austrian Foundation for Development Research
publisherIdentifier: https://ror.org/054z0bn29
publisherIdentifierScheme: ROR
Year: 2024

description: The European Union, in the face of mounting geo-political and climate challenges, needs a more effective innovation policy. Currently, its broad experimentalist approach to innovation policies gives Member States and regions autonomy for policy design. However, this often needs more effective organisations and capabilities to take advantage of the policy space. Thus, European countries face quite a substantial rethinking of how innovation policy is designed and implemented through innovation agencies. This policy paper argues that on all levels of European governance, policymakers should pay closer attention to designing and developing organisational ecosystems for innovation, focusing on fostering new capabilities. The paper starts with the assumption that European innovation agencies today face two broad challenges. First, they are tasked with, or engaged in, transforming socio-technical systems (e.g., food, mobility); and second, socio-technical systems fall under over-lapping systems of governance (e.g., food system includes elements from energy, waste management, health, and other policy areas), typically governed by different bodies. The transformation challenge indicates that innovation agencies require a broad spectrum of new capabilities across multiple systems. The governance challenge indicates the need for inter-organisational or distributed capabilities (e.g., division of labour and coordination across multiple organisations). This report discusses how innovation agencies are responding to this dual challenge and what critical steps could be taken to increase their capabilities to tackle the challenges effectively.
Whom actually do multipole moments belong to?
Creators: name: Hernandez-Pastora, J. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using an integral definition to calculate the relativistic multipole moments (RMM), and the ensuing generalized relativistic Gauss theorem, we prove that the evaluation of that volume integral in Erez-Rosen coordinates, leads to a specific link between the RMM and the source of the exterior space--time, provided we have a global static axisymmetric metric in that coordinate system for any Weyl exterior field. This result allows to establish a relationship between the RMM and certain volume integral expressions involving the material content of the source from its energy-momentum tensor as well as the interior metric. In particular the relativistic quadrupole moment for the Erez-Rosen space-time is obtained.
Dimension reduction based on constrained canonical correlation and variable filtering
Creators: name: Zhou, Jianhui
name: He, Xuming
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62J07 (Primary) 62H20 (Secondary)

description: The ``curse of dimensionality'' has remained a challenge for high-dimensional data analysis in statistics. The sliced inverse regression (SIR) and canonical correlation (CANCOR) methods aim to reduce the dimensionality of data by replacing the explanatory variables with a small number of composite directions without losing much information. However, the estimated composite directions generally involve all of the variables, making their interpretation difficult. To simplify the direction estimates, Ni, Cook and Tsai [Biometrika 92 (2005) 242--247] proposed the shrinkage sliced inverse regression (SSIR) based on SIR. In this paper, we propose the constrained canonical correlation ($C^3$) method based on CANCOR, followed by a simple variable filtering method. As a result, each composite direction consists of a subset of the variables for interpretability as well as predictive power. The proposed method aims to identify simple structures without sacrificing the desirable properties of the unconstrained CANCOR estimates. The simulation studies demonstrate the performance advantage of the proposed $C^3$ method over the SSIR method. We also use the proposed method in two examples for illustration.
description: Published in at http://dx.doi.org/10.1214/07-AOS529 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Discovery of New Dwarf Galaxies in the M81 Group
Creators: name: Chiboucas, Kristin
name: Karachentsev, Igor D.
name: Tully, R. Brent
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An order of magnitude more dwarf galaxies are expected to inhabit the Local Group, based on currently accepted galaxy formation models, than have been observed. This discrepancy has been noted in environments ranging from the field to rich clusters. However, no complete census of dwarf galaxies exist in any environment. The discovery of the smallest and faintest dwarfs is hampered by the limitations in detecting such faint and low surface brightness galaxies. An even greater difficulty is establishing distances to or group/cluster membership for such faint galaxies. The M81 group provides an almost unique opportunity for establishing membership for galaxies in a low density region complete to magnitudes as faint as M_{r'} = -10. With a distance modulus of 27.8, the tip of the red giant branch just resolves in ground-based surveys. We have surveyed a 65 square degree region around M81 with the CFHT/MegaCam. From these images we have detected 22 new dwarf galaxy candidates. Photometric, morphological, and structural properties are presented for the candidates. The group luminosity function has a faint end slope characterized by the parameter alpha = -1.27+/-0.06. We discuss implications of this dwarf galaxy population on cosmological models.
description: Accepted for publication in AJ. 50 pages, including 35 figures
An Evaluation of Anomaly Detection and Diagnosis in Multivariate Time Series
Creators: name: Garg, Astha
name: Zhang, Wenyu
name: Samaran, Jules
name: Ramasamy, Savitha
name: Foo, Chuan-Sheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Several techniques for multivariate time series anomaly detection have been proposed recently, but a systematic comparison on a common set of datasets and metrics is lacking. This paper presents a systematic and comprehensive evaluation of unsupervised and semi-supervised deep-learning based methods for anomaly detection and diagnosis on multivariate time series data from cyberphysical systems. Unlike previous works, we vary the model and post-processing of model errors, i.e. the scoring functions independently of each other, through a grid of 10 models and 4 scoring functions, comparing these variants to state of the art methods. In time-series anomaly detection, detecting anomalous events is more important than detecting individual anomalous time-points. Through experiments, we find that the existing evaluation metrics either do not take events into account, or cannot distinguish between a good detector and trivial detectors, such as a random or an all-positive detector. We propose a new metric to overcome these drawbacks, namely, the composite F-score ($Fc_1$), for evaluating time-series anomaly detection. Our study highlights that dynamic scoring functions work much better than static ones for multivariate time series anomaly detection, and the choice of scoring functions often matters more than the choice of the underlying model. We also find that a simple, channel-wise model - the Univariate Fully-Connected Auto-Encoder, with the dynamic Gaussian scoring function emerges as a winning candidate for both anomaly detection and diagnosis, beating state of the art algorithms.
description: IEEE Transactions on Neural Networks and Learning Systems
Cognitive MIMO Radio: A Competitive Optimality Design Based on Subspace Projections
Creators: name: Scutari, Gesualdo
name: Palomar, Daniel P.
name: Barbarossa, Sergio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Information Theory (cs.IT)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Cognitive MIMO Radio: A Competitive Optimality Design Based on Subspace Projections
Life cycle assessment for evaluating the energy balance of the multi-feedstock biodiesel production process in Indonesia
Creators: name: Wahyono, Yoyon
name: Hadiyanto, H.
name: Gheewala, Shabbir
name: Budihardjo, Mochamad Arief
name: Adiansyah, Joni
name: Widayat, Widayat
name: Christwardana, Marcelinus
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: This study aims to compare the energy balance of the production of biodiesel from multiple feedstocks to the production of biodiesel from palm oil in Indonesia. The energy balance study indicates that the biodiesel multi-feedstock plant is feasible to operate. The renewability of biodiesel from multiple feedstocks is 3.31 and that of palm oil biodiesel is 6.23. It is due to the fact that the energy content and demand of multi-feedstock biodiesel are much lower than palm oil biodiesel. The energy content of biodiesel from multiple feedstocks (and its co-products) is less than that of biodiesel from palm oil (and its co-products), 109,041 MJ vs 130,370 MJ, respectively. The energy demands for the production of biodiesel from multiple feedstocks and biodiesel from palm oil are 35 × 103 MJ and 23 × 103 MJ, respectively. Energy demands, including fossil and biomass, are attributable to plantation operations, including the usage of fertilisers. Plantations of multiple crops use more energy than plantations of oil palm alone because they require more fertilisers. It is not suggested to produce multi-feedstock biodiesel from sunflower, canola, and soybean since its energy balance is not better than biodiesel from palm oil.
Lattice polytopes cut out by root systems and the Koszul property
Creators: name: Payne, Sam
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52B20, 05E15, 16S37

description: We show that lattice polytopes cut out by root systems of classical type are normal and Koszul, generalizing a well-known result of Bruns, Gubeladze, and Trung in type A. We prove similar results for Cayley sums of collections of polytopes whose Minkowski sums are cut out by root systems. The proofs are based on a combinatorial characterization of diagonally split toric varieties.
description: 10 pages. v2: corrected treatment of G_2 case, improved exposition throughout
Finite element simulation of a laser scribing process for a head suspension
in hard disk drives
Creators: name: Teerawat Kumnorkaew
name: Vitoon Uthaisangsuk
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2012
Subjects: Laser scribing, Non-linear kinematic hardening, Head suspension, Flying height, Finite Element Analysis, Austenitic steel 304

description: 2, 39, KKU Engineering Journal
Thai musical instrument recognition and classification using C5.0 algorithm
Creators: name: Parinya Thongkam
name: Wanida Kanarkard
name: Kittiphong Meesawat
name: Wiroj Taweepworadej
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2012
Subjects: C5.0 Algorithm,Data classification,Thai musical instruments

description: 1, 39, KKU Engineering Journal
Chiral condensate in nuclear matter with vacuum corrections
Creators: name: Jiang, Wei-Zhou
name: Li, Bao-An
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Within the relativistic Hartree approach using a Lagrangian with density-dependent parameters respecting the chiral limit, it is found that the vacuum corrections from the nucleon Dirac sea soften the equation of state and favor the chiral symmetry restoration at high densities.
description: 12 pages
Langlands duality in Liouville-H_3^+ WZNW correspondence
Creators: name: Giribet, Gaston
name: Nakayama, Yu
name: Nicolas, Lorena
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show a physical realization of the Langlands duality in correlation functions of H_3^+ WZNW model. We derive a dual version of the Stoyanovky-Riabult-Teschner (SRT) formula that relates the correlation function of the H_3^+ WZNW and the dual Liouville theory to investigate the level duality k-2 \to (k-2)^{-1} in the WZNW correlation functions. Then, we show that such a dual version of the H_3^+ - Liouville relation can be interpreted as a particular case of a biparametric family of non-rational CFTs based on the Liouville correlation functions, which was recently proposed by Ribault. We study symmetries of these new non-rational CFTs and compute correlation functions explicitly by using the free field realization to see how a generalized Langlands duality manifests itself in this framework. Finally, we suggest an interpretation of the SRT formula as realizing the Drinfeld-Sokolov Hamiltonian reduction. Again, the Hamiltonian reduction reveals the Langlands duality in the H_3^+ WZNW model. Our new identity for the correlation functions of H_3^+ WZNW model may yield a first step to understand quantum geometric Langlands correspondence yet to be formulated mathematically.
description: 32 pages
Could saturation effects be visible in a future electron-ion collider?
Creators: name: Cazaroto, E. R.
name: Carvalho, F.
name: Gonçalves, V. P.
name: Navarra, F. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We expect to observe parton saturation in a future electron - ion collider. In this letter we discuss this expectation in more detail considering two different models which are in good agreement with the existing experimental data on nuclear structure functions. In particular, we study the predictions of saturation effects in electron - ion collisions at high energies, using a generalization for nuclear targets of the b-CGC model, which describes the $ep$ HERA quite well. We estimate the total, longitudinal and charm structure functions in the dipole picture and compare them with the predictions obtained using collinear factorization and modern sets of nuclear parton distributions. Our results show that inclusive observables are not very useful in the search for saturation effects. In the small $x$ region they are very difficult to disentangle from the predictions of the collinear approaches . This happens mainly because of the large uncertainties in the latter. On the other hand, our results indicate that the contribution of diffractive processes to the total cross section is about 20 % at large A and small Q^2, allowing for a detailed study of diffractive observables. The study of diffractive processes becomes essential to observe parton saturation.
description: 7 pages 5 figures
Density of states near a vortex core in ferromagnetic superconductors: Application to STM measurements
Creators: name: Linder, Jacob
name: Yokoyama, Takehito
name: Sudbø, Asle
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate numerically the local density of states (LDOS) in the vicinity of a vortex core in a ferromagnetic superconductor. Specifically, we investigate how the LDOS is affected by the relative weight of the spin bands in terms of the superconducting pairing, and we also examine the effect of different pairing symmetries for the superconducting order parameter. Our findings are directly related to scanning tunneling microscopy measurements and may thus be highly useful to clarify details of the superconducting pairing in recently discovered ferromagnetic superconductors.
description: 9 pages, 8 figures. Accepted for publication in Phys. Rev. B
Dissipation-driven quantum phase transitions in collective spin systems
Creators: name: Morrison, S.
name: Parkins, A. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We consider two different collective spin systems subjected to strong dissipation -- on the same scale as interaction strengths and external fields -- and show that either continuous or discontinuous dissipative quantum phase transitions can occur as the dissipation strength is varied. First, we consider a well known model of cooperative resonance fluorescence that can exhibit a second-order quantum phase transition, and analyze the entanglement properties near the critical point. Next, we examine a dissipative version of the Lipkin-Meshkov-Glick interacting collective spin model, where we find that either first- or second-order quantum phase transitions can occur, depending only on the ratio of the interaction and external field parameters. We give detailed results and interpretation for the steady state entanglement in the vicinity of the critical point, where it reaches a maximum. For the first-order transition we find that the semiclassical steady states exhibit a region of bistability.
description: 12 pages, 16 figures, removed section on homodyne spectra
Fidelity induced distance measures for quantum states
Creators: name: Ma, Zhihao
name: Zhang, Fu-Lin
name: Chen, Jing-Ling
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Fidelity plays an important role in quantum information theory. In this letter, we introduce new metric of quantum states induced by fidelity, and connect it with the well-known trace metric, Sine metric and Bures metric for the qubit case. The metric character is also presented for the qudit (i.e., $d$-dimensional system) case. The CPT contractive property and joint convex property of the metric are also studied.
description: 8 pages
Exact generating function for 2-convex polygons
Creators: name: James, W. R. G.
name: Jensen, I.
name: Guttmann, A. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A15

description: Polygons are described as almost-convex if their perimeter differs from the perimeter of their minimum bounding rectangle by twice their `concavity index', $m$. Such polygons are called \emph{$m$-convex} polygons and are characterised by having up to $m$ indentations in their perimeter. We first describe how we conjectured the (isotropic) generating function for the case $m=2$ using a numerical procedure based on series expansions. We then proceed to prove this result for the more general case of the full anisotropic generating function, in which steps in the $x$ and $y$ direction are distinguished. In so doing, we develop tools that would allow for the case $m > 2$ to be studied. %In our proof we use a `divide and conquer' approach, factorising 2-convex %polygons by extending a line along the base of its indents. We then use %the inclusion-exclusion principle, the Hadamard product and extensions to %known methods to derive the generating functions for each case.
description: 28 pages, 15 figures, IoP style
Fence methods for mixed model selection
Creators: name: Jiang, Jiming
name: Rao, J. Sunil
name: Gu, Zhonghua
name: Nguyen, Thuan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62F07, 62F35 (Primary) 62F40 (Secondary)

description: Many model search strategies involve trading off model fit with model complexity in a penalized goodness of fit measure. Asymptotic properties for these types of procedures in settings like linear regression and ARMA time series have been studied, but these do not naturally extend to nonstandard situations such as mixed effects models, where simple definition of the sample size is not meaningful. This paper introduces a new class of strategies, known as fence methods, for mixed model selection, which includes linear and generalized linear mixed models. The idea involves a procedure to isolate a subgroup of what are known as correct models (of which the optimal model is a member). This is accomplished by constructing a statistical fence, or barrier, to carefully eliminate incorrect models. Once the fence is constructed, the optimal model is selected from among those within the fence according to a criterion which can be made flexible. In addition, we propose two variations of the fence. The first is a stepwise procedure to handle situations of many predictors; the second is an adaptive approach for choosing a tuning constant. We give sufficient conditions for consistency of fence and its variations, a desirable property for a good model selection procedure. The methods are illustrated through simulation studies and real data analysis.
description: Published in at http://dx.doi.org/10.1214/07-AOS517 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
On the Possible Association of Ultra High Energy Cosmic Rays with Nearby Active Galaxies
Creators: name: Moskalenko, Igor V.
name: Stawarz, Lukasz
name: Porter, Troy A.
name: Cheung, Chi C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) Data collected by the Pierre Auger Observatory (Auger) provide evidence for anisotropy in the arrival directions of cosmic rays (CRs) with energies >57 EeV that suggests a correlation with the positions of AGN located within ~75 Mpc. A detailed study of the sample of AGN whose positions are located within 3.2 degrees of the CR events (and extending our analysis out to ~150 Mpc) shows that most of them are classified as Seyfert 2 and low-ionization nuclear emission-line region (LINER) galaxies whose properties do not differ substantially from other local AGN of the same types. Therefore, if the production of the highest energy CRs is persistent in nature, i.e., operates in a single object on long (>Myr) timescales, the claimed correlation between the CR events observed by Auger and local active galaxies should be considered as resulting from a chance coincidence. Additionally, most of the selected sources do not show significant jet activity, and hence, in most conservative scenarios, there are no reasons for expecting them to accelerate CRs up to the highest energies, ~10^20 eV. A future analysis has to take into account AGN morphology and may yield a correlation with a larger deflection angle and/or more distant sources. We further argue that the nearby radio galaxy NGC 5128 (Cen A) alone could be associated with at least 4 events due to its large radio extent, and PKS 1343-60 (Cen B), another nearby radio galaxy, can be associated with more than 1 event due to its proximity to the Galactic plane and, correspondingly, the stronger Galactic magnetic field the UHECRs encounter during propagation to the Earth. Future gamma-ray observations (by, e.g., Fermi Gamma-ray Space Telescope, and HESS) may provide additional clues to the nature of the accelerators of the UHECRs in the local Universe.
description: 14 pages, 7 figures, emulateapj.cls; ApJ in press. Many considerable changes, conclusions unchanged
Personal Managment of Digital Information in University Students from a Gender Perspective
Creators: name: López, Vicent
name: Serrano, José Luis
name: Gutiérrez, Isabel
Publisher: name: Zenodo
Year: 2021

description: Appendix I. Variables, questions and items of the questionnaire used. Complementary to: López, P., Serrano, J.L. & Gutiérrez, I. (in press). Personal Managment of Digital Information in University Students from a Gender Perspective. New Aproaches in Educational Research.
Clump morphology and evolution in MHD simulations of molecular cloud formation
Creators: name: Banerjee, Robi
name: Vazquez-Semadeni, Enrique
name: Hennebelle, Patrick
name: Klessen, Ralf
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Abridged: We study the properties of clumps formed in three-dimensional weakly magnetized magneto-hydrodynamic simulations of converging flows in the thermally bistable, warm neutral medium (WNM). We find that: (1) Similarly to the situation in the classical two-phase medium, cold, dense clumps form through dynamically-triggered thermal instability in the compressed layer between the convergent flows, and are often characterised by a sharp density jump at their boundaries though not always. (2) However, the clumps are bounded by phase-transition fronts rather than by contact discontinuities, and thus they grow in size and mass mainly by accretion of WNM material through their boundaries. (3) The clump boundaries generally consist of thin layers of thermally unstable gas, but these layers are often widened by the turbulence, and penetrate deep into the clumps. (4) The clumps are approximately in both ram and thermal pressure balance with their surroundings, a condition which causes their internal Mach numbers to be comparable to the bulk Mach number of the colliding WNM flows. (5) The clumps typically have mean temperatures 20 < T < 50 K, corresponding to the wide range of densities they contain (20 < n < 5000 pcc) under a nearly-isothermal equation of state. (6) The turbulent ram pressure fluctuations of the WNM induce density fluctuations that then serve as seeds for local gravitational collapse within the clumps. (7) The velocity and magnetic fields tend to be aligned with each other within the clumps, although both are significantly fluctuating, suggesting that the velocity tends to stretch and align the magnetic field with it. (8) The typical mean field strength in the clumps is a few times larger than that in the WNM. (9) The magnetic field strength has a mean value of B ~ 6 mu G ...
description: substantially revised version, accepted by MNRAS, 13 pages, 14 figures, high resolution version: http://www.ita.uni-heidelberg.de/~banerjee/publications/MC_Formation_Paper2.pdf
Transition Redshift: New Kinematic Constraints from Supernovae
Creators: name: Cunha, J. V.
name: Lima, J. A. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The transition redshift (deceleration/acceleration) is discussed by expanding the deceleration parameter to first order around its present value. A detailed study is carried out by considering two different parameterizations: $q=q_0 + q_1z$ and $q=q_0 + q_1 z(1+z)^{-1}$, and the associated free parameters ($q_o, q_1$) are constrained by 3 different supernova samples. The previous analysis by Riess {\it{et al.}} [ApJ 607, 665, 2004] using the first expansion is slightly improved and confirmed in light of their recent data ({\emph{Gold}}07 sample). However, by fitting the model with the Supernova Legacy Survey (SNLS) type Ia sample we find that the best fit to the redshift transition is $z_t = 0.61$ instead of $z_t = 0.46$ as derived by the High-z Supernovae Search (HZSNS) team. This result based in the SNLS sample is also in good agreement with the Davis {\it{et al.}} sample, $z_t=0.60^{+0.28}_{-0.11}$ ($1σ$). Such results are in line with some independent analyzes and accommodates more easily the concordance flat model ($Λ$CDM). For both parameterizations, the three SNe type Ia samples considered favor recent acceleration and past deceleration with a high degree of statistical confidence level. All the kinematic results presented here depend neither on the validity of general relativity nor the matter-energy contents of the Universe.
description: 19 pages, 15 figures, 1 table, revised version accepted for publication in MNRAS