cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Belonging or estrangement
title: the European refugee crisis and its effects on immigrant identity
titleType: Subtitle
Creators: name: Prömel, Christopher
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: refugees
subject: migrants
subject: ethnis identity
subject: european refugee crisis
subject: 300 Sozialwissenschaften::330 Wirtschaft::330 Wirtschaft

description: This study deals with the impact of the 2015 European Refugee Crisis on the ethnic identity of resident migrants in Germany. To derive plausibly causal estimates, I exploit the quasi-experimental setting in Germany, by which refugees are allocated to different counties by state authorities without being able to choose their locations themselves. This study finds that higher shares of refugees in a county increased migrants’ attachment to their home countries, while not affecting their perceived belonging to Germany. Further analyses uncover strong heterogeneities with respect to country of origin and immigrant characteristics and suggest that the observed effects may be primarily driven by experiences of discrimination and the consumption of foreign media. Lastly, I find that changes in ethnic identity coincide with the political polarization of migrants. These results have various policy implications in terms of the dispersal of asylum seekers, the modes of communication with different migrant groups and the importance of antidiscrimination measures.
PUBLIC SECTOR PLANT BREEDING IN A PRIVATIZING WORLD
Creators: name: Thirtle, Colin G.
name: Srinivasan, Chittur S.
name: Heisey, Paul W.
name: Thirtle, Colin G.
name: Srinivasan, Chittur S.
name: Heisey, Paul W.
Publisher: name: Unknown
Year: 2001
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: plant breeding
subject: economics
subject: public sector
subject: private sector
subject: research policy
subject: biotechnology
subject: intellectual property

description: Intellectual property protection, globalization, and pressure on public budgets in many industrialized countries have shifted the balance of plant breeding activity from the public to the private sector. Several economic factors influence the relative shares of public versus private sector plant breeding activity, with varying results over time, over country, and over crop. The private sector, for example, dominates corn breeding throughout the industrialized world, but public and private activities in wheat breeding differ widely in Western Europe, different regions of the United States, Canada, and Australia. Public sector involvement in plant breeding may have benefits to society that the private sector's activities may not, fostering greater sharing of information and more work on traits of plant varieties (such as environmental suitability and nutritional characteristics) that may be under-researched by private breeding programs.
Inflation and dark energy arising from geometrical tachyons
Creators: name: Panda, Sudhakar
name: Sami, M.
name: Tsujikawa, Shinji
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the motion of a BPS D3-brane in the NS5-brane ring background. The radion field becomes tachyonic in this geometrical set up. We investigate the potential of this geometrical tachyon in the cosmological scenario for inflation as well as dark energy. We evaluate the spectra of scalar and tensor perturbations generated during tachyon inflation and show that this model is compatible with recent observations of Cosmic Microwave Background (CMB) due to an extra freedom of the number of NS5-branes. It is not possible to explain the origin of both inflation and dark energy by using a single tachyon field, since the energy density at the potential minimum is not negligibly small because of the amplitude of scalar perturbations set by CMB anisotropies. However geometrical tachyon can account for dark energy when the number of NS5-branes is large, provided that inflation is realized by another scalar field.
description: 11 pages, 8 figures
U.S. Organic Farming Emerges in the 1990s: Adoption of Certified Systems
Creators: name: Greene, Catherine R.
name: Greene, Catherine R.
Publisher: name: Unknown
Year: 2001
Subjects: subject: Farm Management
subject: organic farming systems
subject: organic certification
subject: certified organic acreage and livestock
subject: price premiums
subject: nation organic rules
subject: speciality agriculture
subject: high-value crops
subject: farmers' markets

description: Farmers have been developing organic farming systems in the United States for decades. State and private institutions also began emerging during this period to set organic farming standards and provide third-party verification of label claims, and legislation requiring national standards was passed in the 1990s. More U.S. producers are considering organic farming systems in order to lower input costs, conserve nonrenewable resources, capture high-value markets, and boost farm income. Organic farming systems rely on practices such as cultural and biological pest management, and virtually prohibit synthetic chemicals in crop production and antibiotics or hormones in livestock production. This report updates U.S. Department of Agriculture (USDA) estimates of land farmed with organic practices during 1992-94 with 1997 estimates, and provides new State- and crop-level detail.
Additional file 3 of BCAS1-positive immature oligodendrocytes are affected by the α-synuclein-induced pathology of multiple system atrophy
Creators: name: Kaji, Seiji
name: Maki, Takakuni
name: Ueda, Jun
name: Ishimoto, Tomoyuki
name: Inoue, Yutaka
name: Yasuda, Ken
name: Sawamura, Masanori
name: Hikawa, Rie
name: Ayaki, Takashi
name: Hodaka Yamakado
name: Takahashi, Ryosuke
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 3: Figure S2. Extensive analysis of BCAS1(+) cells in MSA and PD/DLB brains.
title: Διαχρονική ανάλυση των συστημάτων αξιολόγησης απόδοσης προσωπικού στην ελληνική δημόσια διοίκηση: θέσεις και αντιθέσεις
title: Analysis of personnel performance evaluation systems in greek public. Administration: positions and controversies
titleType: AlternativeTitle
Creators: name: Κονδύλη, Πανωραία
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Αξιολόγηση απόδοσης
Απόδοση εργαζομένων
Δημόσιοι υπάλληλοι
Αξιολόγηση δημοσίων υπαλλήλων
Αξιολόγηση δημοσίου τομέα
Δημόσια διοίκηση
Συστήματα αξιολόγησης απόδοσης

description: Η παρούσα εργασία πραγματεύεται το ζήτημα της αξιολόγησης των Δημοσίων Υπαλλήλων. Αρχικά, παρουσιάζεται το περιεχόμενο της έννοιας της αξιολόγησης της απόδοσης, το αντικείμενό της, καθώς επίσης οι θετικές και αρνητικές της επιπτώσεις. Σε επόμενο επίπεδο αναλύονται τα νομοθετικά πλαίσια του παρελθόντος αλλά και το ισχύον νομοθετικό πλαίσιο, όπως και οι αντιδράσεις που δημιουργήθηκαν από την εφαρμογή της. Στη συνέχεια δίνονται οι μέθοδοι αξιολόγησης που χρησιμοποιούνται. Η έρευνα του ζητήματος βασίστηκε στην βιβλιογραφική μελέτη πηγών που προέρχονται από την εγχώρια και την ξένη έρευνα. Τα βασικά συμπεράσματα που προέκυψαν από αυτή αφορούν τον βαθμό επιτυχίας της εφαρμογής των διαφόρων μεθόδων που έχουν αξιοποιηθεί, την αναγκαιότητα ύπαρξης ενός ορθά δομημένου συστήματος αξιολόγησης, τα περιθώρια και τις δυνατότητες βελτίωσης που μπορούν να υπάρξουν. Όπως προκύπτει, οι δημόσιοι υπάλληλοι αντιδρούν στην εφαρμογή των μεθόδων αξιολόγησης λόγω της ελλιπούς ενημέρωσης και του φόβου της απόλυσης. Δυστυχώς, δεν υπάρχει ένα ενιαίο σύστημα που να εξασφαλίζει την αντικειμενικότητα και την ορθότητα των αποτελεσμάτων με βάση το οποίο να μπορούν να εξαχθούν συμπεράσματα. Για το λόγο αυτό, η αξιοποίηση των αποτελεσμάτων που προκύπτουν δεν είναι εφικτή.
title: Recopilación de fuentes para la historia Mapuche, siglos XVII, XVIII y XIX
title: Edición y comentarios
titleType: Subtitle
Creators: name: Rinke, Stefan
name: Chacón, Nelson
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Archivos Nacionales
subject: Mapuches
subject: Chile Mapuche
subject: Cuidad
subject: Rechtsstreitigkeiten
subject: Seguridad
subject: Región
subject: República
subject: Indígenas
subject: Colonización
subject: Pleitos
subject: Ökonomie
subject: indigene Bevölkerung
subject: Kolonialisierung
subject: Nationalarchive
subject: Censos
subject: Fondos Documentales
subject: Economía
subject: 900 Geschichte und Geografie::980 Geschichte Südamerikas::980 Geschichte Südamerikas

description: Esta compilación recoge importantes testimonios documentales de la historia Mapuche de los siglos XVI a XIX. El conjunto sirve generar nuevas perspectivas de investigación a partir de problemas históricos. La riqueza del material procediendo de diferentes archivos chilenos proporcionará nuevas visiones sobre las sociedades modernas iberoamericanas.
description: Diese Quellensammlung beleuchtet die Geschichte der Mapuche zwischen dem 16. und 19. Jahrhundert. Das Quellenmaterial stammt aus verschiedenen Institutionen wie dem Archivo Franciscano de Chile, Chillán (Fondo de Asuntos Varios) und dem Archivo Nacional de Chile.
Nanostructured Electrodes as Random Arrays of Active Sites: Modeling and Theoretical Characterization
Creators: name: Oleinick, Alexander
name: Sliusarenko, Oleksii
name: Svir, Irina
name: Amatore, Christian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This review presents the main principles underlying the theoretical description of the behavior of regular and random arrays of nanometric active sites. It is further shown how they can be applied for establishing a useful semi-analytical approximation of the arrays responses under diffusion limited conditions when they involve the common situation of active sites with identical sizes. This approximation is general and, as exemplified for different type of arrays, can be employed for describing the behavior of any array involving arbitrary distributions of their active sites onto the substrate surface. Furthermore, this efficient approach allows statistical characterization of active sites distributions of any array based on chronoamperometric data.
description: Editors' Choice Review
Number of Spin $I$ States of Identical Particles
Creators: name: Zhao, Y. M.
name: Arima, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this paper we study the enumeration of number (denoted as ${D_I}$) of spin $I$ states for fermions in a single-$j$ shell and bosons with spin $l$. We show that $D_I$ can be enumerated by the reduction from SU$(n+1)$ to SO(3). New regularities of $D_I$ are discerned.
description: 3 pages, no figures. to be published
In situ synthesis of polyynes in a polymer matrix by pulsed laser ablation in liquid
Creators: name: Peggiani, Sonia
name: Facibeni, Anna
name: Milani, Alberto
name: Castiglioni, Chiara
name: Russo, Valeria
name: Bassi, Andrea Li
name: Casari, Carlo S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Polyynes are finite chains formed by sp-hybridized carbon atoms with alternating single and triple bonds and displaying intriguing electronic and optical properties. Pulsed laser ablation in liquid (PLAL) is a well assessed technique for the physical synthesis of hydrogen-capped polyynes in solution, however, their limited stability prevents further exploitation in materials for different applications. In this work, polyynes in poly(vinyl alcohol) (PVA) were produced in a single-step PLAL process by ablating graphite directly in aqueous solution of PVA, investigating the role of polymer concentration. The presence of PVA solution, as a participating medium for PLAL, is shown to favour the formation of polyynes. The addition of Ag colloids to the aqueous PVA/polyynes solution allowed surface-enhanced Raman spectroscopy (SERS) measurements, carried out both on liquid samples and on free-standing nanocomposites, obtained after solvent evaporation. We show that polyynes in the nanocomposite remain stable at least for 11 months, whereas the corresponding PVA/Ag/polyynes solution displayed a strong polyyne reduction already after 3 weeks. These results open the view to further characterizations of the properties of polyyne-based films and materials.
Organophosphorus compounds in the German Baltic coastal area
Creators: name: Lohrer, Constantin
Publisher: name: Universität Rostock
Year: 2020
Subjects: subject: 540 Chemistry & allied sciences

description: This study investigates whether representatives of inositol phosphates and natural phosphonates are present in aquatic systems on the German Baltic coastal area and how high their proportion of total organic phosphorus is. Due to a lack of quantitative analytical methods, appropriate methods based on chromatography coupled with mass spectrometry were developed or adapted for all substances in a first step. In the next step these methods were used to detect the compounds inositol hexakisphosphate and methylphosphonic acid in samples from the aquatic systems mentioned above.
System-size dependence of strangeness production in high-energy A+A collisions and percolation of strings
Creators: name: Hoehne, C.
name: Puehlhofer, F.
name: Stock, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We argue that the shape of the system-size dependence of strangeness production in nucleus-nucleus collisions can be understood in a picture that is based on the formation of clusters of overlapping strings. A string percolation model combined with a statistical description of the hadronization yields a quantitative agreement with the data at $\sqrt{s_{NN}}=17.3$ GeV. The model is also applied to RHIC energies.
Validation of Emission-Line Galaxies Target Selection Algorithms for the Dark Energy Spectroscopic Instrument Using the MMT Binospec
Creators: name: Karim, Tanveer
name: Lee, Jae H.
name: Eisenstein, Daniel J.
name: Burtin, Etienne
name: Moustakas, John
name: Raichoor, Anand
name: Yèche, Christophe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The forthcoming Dark Energy Spectroscopic Instrument (DESI) experiment plans to measure the effects of dark energy on the expansion of the Universe and create a $3$D map of the Universe using galaxies up to $z \sim 1.6$ and QSOs up to $z \sim 3.5$. In order to create this map, DESI will obtain spectroscopic redshifts of over $30$ million objects; among them, a majority are \oii emitting star-forming galaxies known as emission-line galaxies (ELGs). These ELG targets will be pre-selected by drawing a selection region on the $g - r$ vs. $r - z$ colour-colour plot, where high redshift ELGs form a separate locus from the lower redshift ELGs and interlopers. In this paper, we study the efficiency of three ELG target selection algorithms -- the final design report (FDR) cut based on the DEEP2 photometry, Number Density Modelling and Random Forest -- to determine how the combination of these three algorithms can be best used to yield a simple selection boundary that will be best suited to meet DESI's science goals. To do this, we selected $17$ small patches in the DESI footprint where we run the three target selection algorithms to pre-select ELGs based on their photometry. We observed the pre-selected ELGs using the MMT Binospec, which is similar in functionality to the DESI instrument, to obtain their spectroscopic redshifts and fluxes of $1054$ ELGs. By analysing the redshift and fluxing distribution of these galaxies, we find that although NDM performed the best, simple changes in the FDR definition would also yield sufficient performance.
description: 16 pages, 9 figures, Accepted by the MNRAS on 2020 July 27
Zur Überlieferungsgeschichte des äthiopischen Henochbuches
Creators: name: Uhlig, Siegbert
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 69 (1985): Oriens christianus, Band 69
THE ROLE OF ECONOMICS IN EATING CHOICES AND WEIGHT OUTCOMES
Creators: name: Mancino, Lisa
name: Lin, Biing-Hwan
name: Ballenger, Nicole
name: Mancino, Lisa
name: Lin, Biing-Hwan
name: Ballenger, Nicole
Publisher: name: Unknown
Year: 2003
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Health Economics and Policy
subject: obesity
subject: CSFII
subject: DHKS
subject: weight
subject: age
subject: income
subject: education
subject: race/ethnicity

description: We use data from the USDA's 1994-96 Continuing Survey of Food Intakes by Individuals and the 1994-96 Diet and Health Knowledge Survey to ascertain whether economic factors help explain weight differences among adults. Weight differs among demographic subgroups, and differences in specific behaviors, health awareness, and eating patterns can be linked to weight outcomes. An economic framework helps explain how socioeconomic factors affect an individual's ability to achieve good health. Our results suggest that income, household composition, and formal education help explain variation in behaviors and attitudes that are significantly associated with weight outcomes.
Thermodynamics of the quantum spin-S XXZ chain
Creators: name: Rojas, Onofre
name: de Souza, S. M.
name: Silva, E. V. Correa
name: Thomaz, M. T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The thermodynamics of the spin-$S$ anisotropic quantum $XXZ$ chain with arbitrary value of $S$ and unitary norm, in the high-temperature regime, is reported. The single-ion anisotropy term and the interaction with an external magnetic field in the $z$-direction are taken into account. We obtain, for arbitrary value of $S$, the $β$-expansion of the Helmholtz free energy of the model up to order $β^6$ and show that it actually depends on $\frac{1}{S(S+1)}$. Its classical limit is obtained by simply taking $S\to \infty$. At $h=0$ and D=0, our high temperature expansion of the classical model coincides with Joyce's exact solution\cite{joyce_prl}. We study, in the high temperature region, some thermodynamic quantities such as the specific heat and the magnetic susceptibility as functions of spin and verify for which values of $S$ those thermodynamic functions behave classically. Their finite temperature behavior is inferred from interpolation of their high- and low-temperature behavior, and shown to be in good agreement with numerical results. The finite temperature behavior is shown for higher values of spin.
description: 18 pages, 14 figures
title: Εκπαιδευτικό λογισμικό για την περιβαλλοντική εκπαίδευση στο εκπαιδευτικό σύστημα
title: Educational software for environmental education in the education system
titleType: AlternativeTitle
Creators: name: Σεϊτανίδη, Δέσποινα
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Περιβάλλον
subject: Ανακύκλωση
subject: Εκπαιδευτικό υλικό

description: Η παρούσα διπλωματική εργασία πραγματεύεται την υλοποίηση ενός προγράμματος που μπορεί να διευκολύνει τόσο τον καθηγητή όσο και τον μαθητή στα πλαίσια της Περιβαλλοντικής Εκπαίδευσης κατά τη διάρκεια της εκπαιδευτικής διαδικασίας. Βασιζόμενη στην αλληλεπίδραση του μαθητή με τον υπολογιστή του θα ενισχύσει την αντίληψη του για την αξία του περιβάλλοντος σε συνδυασμό με τις καθημερινές συνήθειες της ανακύκλωσης και κομποστοποίησης, οι οποίες αποτελούν ένα πρότυπο ζωής βασικό για την υγεία και την οικονομία. Σκοπός του προγράμματος είναι να ευαισθητοποιηθούν οι μαθητές για τα περιβαλλοντικά και κοινωνικοοικονομικά ζητήματα μέσα από τη χρήση των ηλεκτρονικών μέσων που πλέον έχουν θετικό αντίκτυπο στην διδασκαλία και ενισχύουν το επίπεδο μάθησης και διαμόρφωσης περιβαλλοντικής συνείδησης. Ο μαθητής ως χρήστης μπορεί να διαβάσει, να παρακολουθήσει βίντεο, να λάβει γνώσεις από ερωτηματολόγιο, και άλλου τύπου ασκήσεων ώστε να γίνει ένας μελλοντικός υπεύθυνος πολίτης, με σεβασμό αλλά και φροντίδα απέναντι στο περιβάλλον.
The low-luminosity type II SN\,2016aqf: A well-monitored spectral evolution of the Ni/Fe abundance ratio
Creators: name: Müller-Bravo, Tomás E.
name: Gutiérrez, Claudia P.
name: Sullivan, Mark
name: Jerkstrand, Anders
name: Anderson, Joseph P.
name: González-Gaitán, Santiago
name: Sollerman, Jesper
name: Arcavi, Iair
name: Burke, Jamison
name: Galbany, Lluís
name: Gal-Yam, Avishay
name: Gromadzki, Mariusz
name: Hiramatsu, Daichi
name: Hosseinzadeh, Griffin
name: Howell, D. Andrew
name: Inserra, Cosimo
name: Kankare, Erki
name: Kozyreva, Alexandra
name: McCully, Curtis
name: Nicholl, Matt
name: Smartt, Stephen
name: Valenti, Stefano
name: Young, Dave R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Low-luminosity type II supernovae (LL SNe~II) make up the low explosion energy end of core-collapse SNe, but their study and physical understanding remain limited. We present SN\,2016aqf, a LL SN~II with extensive spectral and photometric coverage. We measure a $V$-band peak magnitude of $-14.58$\,mag, a plateau duration of $\sim$100\,days, and an inferred $^{56}$Ni mass of $0.008 \pm 0.002$\,\msun. The peak bolometric luminosity, L$_{\rm bol} \approx 10^{41.4}$\,erg\,s$^{-1}$, and its spectral evolution is typical of other SNe in the class. Using our late-time spectra, we measure the [\ion{O}{i}] $λ\lambda6300, 6364$ lines, which we compare against SN II spectral synthesis models to constrain the progenitor zero-age main-sequence mass. We find this to be 12 $\pm$ 3\,\msun. Our extensive late-time spectral coverage of the [\ion{Fe}{ii}] $\lambda7155$ and [\ion{Ni}{ii}] $\lambda7378$ lines permits a measurement of the Ni/Fe abundance ratio, a parameter sensitive to the inner progenitor structure and explosion mechanism dynamics. We measure a constant abundance ratio evolution of $0.081^{+0.009}_{-0.010}$, and argue that the best epochs to measure the ratio are at $\sim$200 -- 300\,days after explosion. We place this measurement in the context of a large sample of SNe II and compare against various physical, light-curve and spectral parameters, in search of trends which might allow indirect ways of constraining this ratio. We do not find correlations predicted by theoretical models; however, this may be the result of the exact choice of parameters and explosion mechanism in the models, the simplicity of them and/or primordial contamination in the measured abundance ratio.
description: Accepted for publication in MNRAS
Capacity improvements using adaptive nullsteering antennas in IS-95 cellular CDMA systems
Creators: name: Chiu, See-Ming David
Publisher: name: University of British Columbia
Year: 2009

description: In this thesis, the effect of adaptive nullsteering on the system capacity of an IS-95 system is investigated. Adaptive nullsteering is a Spatial Division Multiple Access (SDMA) technology which can be used to increase the system capacity by exploiting a new spatial dimension. By using this SDMA smart antenna with Code Division Multiple Access (CDMA), the system capacity can be increased significantly. In order to simulate and compare the performance of adaptive algorithms in the IS-95 receivers, both IS-95 uplink and downlink are simulated at chip level. Classical adaptive algorithms such as Direct Matrix Inversion (DMI), Least Mean Square (LMS) and Recursive Least Square (RLS) are modified accordingly to conform to this IS-95 receiver architecture. With this receiver structure, performances between different adaptive nullsteering algorithms and that without smart antenna are compared in terms of Signal-to- Interference Ratio (SIR) and their convergence rate to the steady-state SIR. Based on these performance results, a power method is proposed which can be used to estimate the IS-95 system capacity efficiently in a multiple-cell scenario without performing Monte-Carlo simulation. Realistic urban multipath models are used in the simulation to obtain accurate system capacity results. From these results, the advantages of adaptive nullsteering over that without smart antenna are presented. In addition, the performances of adaptive nullsteering and beamforming are also compared in terms of IS-95 system capacity. It is shown that both adaptive nullsteering and beamforming have their own advantages in different urban environments.
Color-complexity enabled exhaustive color-dots identification and spatial patterns testing in images
Creators: name: Liao, Shuting
name: Liu, Li-Yu
name: Chen, Ting-An
name: Chen, Kuang-Yu
name: Hsieh, Fushing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Targeted color-dots with varying shapes and sizes in images are first exhaustively identified, and then their multiscale 2D geometric patterns are extracted for testing spatial uniformness in a progressive fashion. Based on color theory in physics, we develop a new color-identification algorithm relying on highly associative relations among the three color-coordinates: RGB or HSV. Such high associations critically imply low color-complexity of a color image, and renders potentials of exhaustive identification of targeted color-dots of all shapes and sizes. Via heterogeneous shaded regions and lighting conditions, our algorithm is shown being robust, practical and efficient comparing with the popular Contour and OpenCV approaches. Upon all identified color-pixels, we form color-dots as individually connected networks with shapes and sizes. We construct minimum spanning trees (MST) as spatial geometries of dot-collectives of various size-scales. Given a size-scale, the distribution of distances between immediate neighbors in the observed MST is extracted, so do many simulated MSTs under the spatial uniformness assumption. We devise a new algorithm for testing 2D spatial uniformness based on a Hierarchical clustering tree upon all involving MSTs. Our developments are illustrated on images obtained by mimicking chemical spraying via drone in Precision Agriculture.
description: 21 pages, 21 figures
title: Εκπαιδευτικό λογισμικό για τη διδασκαλία των λογικών πυλών και της άλγεβρας Boole στην επαγγελματική εκπαίδευση
title: Educational software for teaching logical gates and Boolean algebra in vocational education
titleType: AlternativeTitle
Creators: name: Παπαχρήστου, Ελένη
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Εκπαιδευτικά συστήματα
subject: Εκπαιδευτικό λογισμικό
subject: Επαγγελματική εκπαίδευση

description: Οι αλλαγές που παρατηρούνται στη σύγχρονη εποχή, κυρίως την τελευταία δεκαετία επηρεάζουν σημαντικά την εκπαίδευση στο επίπεδο της μάθησης. Τα σύγχρονα τεχνολογικά μέσα κατευθύνουν την εκπαίδευση σε αναβαθμισμένες μαθησιακές εμπειρίες και αποτελεσματικότερα εκπαιδευτικά συστήματα, μέσα από την υιοθέτηση σύγχρονων εκπαιδευτικών πρακτικών. Στην παρούσα διπλωματική εργασία υλοποιήθηκε εκπαιδευτική εφαρμογή, η οποία έχοντας το ρόλο του εκπαιδευτή καλείται να μεταδώσει το πεδίο της γνώσης στον χρήστη-μαθητή. Το εκπαιδευτικό λογισμικό βασιζόμενο στους δύο τομείς CAI (Computer – Aided Instructor) και ICAI (Intelligent Computer - Aided Instructor) ή αλλιώς ITS (Intelligent Tutoring Systems) έχει στόχο να διδάξει σε μαθητές της Επαγγελματικής Εκπαίδευσης τις Λογικές Πύλες και την Άλγεβρα Boole μέσα από έξυπνα διδακτικά συστήματα. Στο πρώτο μέρος της διπλωματικής εργασίας υλοποιείται το πρόγραμμα και περιγράφεται η εφαρμογή. Επίσης, παρουσιάζεται η θεωρία μάθησης καθώς και η χρήση των ΤΠΕ στην επαγγελματική εκπαίδευση. Στο δεύτερο μέρος παρουσιάζεται η αρχιτεκτονική του συστήματος. Στο τελευταίο μέρος προκύπτουν συμπεράσματα σχετικά με την εφαρμογή και γίνεται αναφορά σε ενδεχόμενες μελλοντικές επεκτάσεις του εκπαιδευτικού λογισμικού.
Malware analysis, security evaluation for Android application
Creators: name: Κούκουνας, Άγγελος Παναγιώτης
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Malware analysis
subject: Security testing
subject: Android εφαρμογές
subject: Ανάλυση κακόβουλου λογισμικού
subject: Αξιολόγηση επιπέδου ασφαλείας

description: Το πλέον διαδεδομένο λειτουργικό σύστημα όσον αφορά τους υπολογιστές και τα laptops είναι με διαφορά από το δεύτερο το λειτουργικό σύστημα των Windows. Λόγω του ότι κατέχει το μεγαλύτερο μερίδιο στην αγορά, τα συστήματα με Windows OS αποτελούν και το στόχο των περισσότερων κακόβουλων ενεργειών. Από την άλλη, η εξέλιξη της τεχνολογίας στις κινητές συσκευές έχει επηρεάσει κάθε πτυχή της ανθρώπινης καθημερινότητας. Παρέχεται πλέον η δυνατότητα της υπολογιστικής ισχύος ενός υπολογιστή σε κινητά τηλέφωνα και tablets, χωρίς όμως να παρέχεται και το ίδιο επίπεδο ασφάλειας. Το κινητό τηλέφωνο σήμερα αποτελεί στόχο μεγαλύτερης αξίας σε σχέση με έναν υπολογιστή, καθώς οι χρήστες αποθηκεύουν σε αυτό πάρα πολλές πληροφορίες ενώ πραγματοποιούν ακόμα και τραπεζικές συναλλαγές. Το λειτουργικό σύστημα Android θεωρείται πλέον το κυρίαρχο λειτουργικό σύστημα για τις κινητές συσκευές καθώς κατέχει το μεγαλύτερο μερίδιο της αγοράς. Λαμβάνοντας υπ’όψιν τα παραπάνω, στο πρώτο μέρος της παρούσας διπλωματικής εργασίας ασχολούμαστε με το malware analysis, και συγκεκριμένα αναλύουμε κακόβουλα δείγματα που στοχεύουν συστήματα με Windows OS και κινητές συσκευές με λειτουργικό Android. Εξετάζουμε λοιπόν κατά σειρά: 1. ένα trojan malware, ονόματι Kovter 2. ένα ύποπτο εκτελέσιμο, παρουσιάζοντας τα βήματα που ακολουθούνται προκειμένου να προσδιορισθεί η φύση (κακόβουλη ή μη) της λειτουργίας του. 3. μια κακόβουλη εφαρμογή που στοχεύει συσκευές Android η οποία είναι καμουφλαρισμένη ως παιχνίδι, ονόματι Snake. 4. μια κακόβουλη εφαρμογή που στοχεύει συσκευές Android η οποία είναι καμουφλαρισμένη ως app γνωστής τράπεζας, ονόματι ING_certificaat. Κατόπιν, στο δεύτερο μέρος της εργασίας, χρησιμοποιούμε μια εφαρμογή που έχει αναπτυχθεί για σκοπούς testing προκειμένου να αναδείξουμε τις διαφορετικές ευπάθειες που ενδέχεται να υπάρχουν σε μία android εφαρμογή και να παρουσιάσουμε τους τρόπους με τους οποίους ένας κακόβουλος χρήστης μπορεί να τις εκμεταλλευτεί. Η εφαρμογή που εγκαθιστούμε και αναλύουμε, ονόματι Sieve, αποτελεί ένα app που διαχειρίζεται κωδικούς. Έχει αναπτυχθεί αποκλειστικά για σκοπούς testing από την F-SECURE Labs, εταιρεία που ανέπτυξε το drozer, ένα από τα πιο διαδεδομένα εργαλεία για την αξιολόγηση του επιπέδου ασφαλείας Android εφαρμογών και συσκευών.
The Thermodynamic Glass Transition in Finite Dimensions
Creators: name: Moore, M. A.
name: Yeo, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using an effective potential method, a replica formulism is set up for describing supercooled liquids near their glass transition. The resulting potential is equivalent to that for an Ising spin glass in a magnetic field. Results taken from the droplet picture of spin glasses are then used to provide an explanation of the main features of fragile glasses.
description: 4 pages; Final version published in Physical Review Letters
title: Plädoyer für die Nostalgie
title: Zu den Potentialen der Nostalgie für die Zukunftsforschung
titleType: Subtitle
Creators: name: Boettcher, Lilith
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Zukunftstrichter
subject: Retrotopie
subject: Imaginationstrichter
subject: Kritische Zukunftsforschung
subject: Dekoloniale Zukünfte
subject: Zukunftswerkstatt
subject: Causal Layered Analysis
subject: Storytelling Ansatz
subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::300 Sozialwissenschaften

description: Diese Arbeit löst die auf den ersten Blick bestehende Gegensätzlichkeit von Nostalgie und Zukunftsorientierung auf. Sie macht deutlich, welche Ähnlichkeiten zwischen Utopien und Zukunftsbildern – als Forschungsgegenständen der Zukunftsforschung – auf der einen Seite und reflexiver Nostalgie auf der anderen Seite bestehen. Es werden zwei Begriffe eingeführt, um diese Ähnlichkeiten zu verdeutlichen: ‘Nostalgiebilder‘ und ‘reflexive Retrotopien’. Diese können – so die These – insbesondere im Kontext kritischer Zukunftsforschung hilfreich sein: indem sie Zukunftsbilder bei der Dekonstruktion gegenwärtiger Weltbilder ersetzen; indem sie Zukunftsbilder durch ihre besondere Perspektive ergänzen; und indem sie durch ihre identitäts- und kreativitätsstärkenden Elemente den Imaginationsraum alternativer Zukünfte erweitern. Nicht zuletzt werden Nostalgiebilder auch methodisch konkretisiert und im Kontext der Causal Layered Analysis, einem Storytelling Ansatz für dekolonialisierte Zukünfte und der Zukunftswerkstatt als mögliches Werkzeug theoretisch verortet.
description: This paper challenges the seemingly contradictory notion between nostalgia (as past-oriented) and futures (as future-oriented). Reflective nostalgia, as a form of future-oriented nostalgia, fractures this contradiction and therefore provides an entry point for rethinking nostalgia from within futures studies. Images of the future (and utopias) – the research objects of futures studies – are compared with images of nostalgic pasts. Two new terms are defined to illustrate the similarities between them: ‘nostalgia images’ (Nostalgiebilder) and 'reflective retrotopias'. They are proposed – specifically in the context of critical futures studies – as (1) potential replacements for images of the future in deconstruction processes, (2) as complementary perspectives to images of the future, and (3) as creative and identity-strengthening tools for expanding the range of imagined alternative futures. Finally, nostalgia images are discussed in their potential benefit for several futuring methods, specifically the causal layered analysis, a storytelling approach for decolonized futures, and the futures workshop (Zukunftswerkstatt).
title: Μentoring - Ο θεσμός του μέντορα: οι αντιλήψεις των αναπληρωτών νηπιαγωγών με 0-5 έτη προϋπηρεσίας για τη χρησιμότητα του θεσμού
title: Mentoring - The institution of mentor: the perceptions of substitute kindergarten teachers with 0-5 years of pre-service for the use of the institution
titleType: AlternativeTitle
Creators: name: Μπριλλάκη, Παγώνα
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Μέντορας
subject: Mentoring
subject: Νεοεισερχόμενοι εκπαιδευτικοί
subject: Εκπαίδευση

description: Τα τελευταία χρόνια η παροχή ποιοτικής και αποτελεσματικής εκπαίδευσης όπως και ο εκσυγχρονισμός του εκπαιδευτικού συστήματος βρίσκονται στο επίκεντρο της εκπαιδευτικής πολιτικής. Η υποστήριξη και η καθοδήγηση των νεοεισερχόμενων εκπαιδευτικών αποτελεί έναν από τους βασικούς πυλώνες για την βελτίωση της εκπαιδευτικής διαδικασίας, αφού οι νεοεισερχόμενοι είναι τα θεμέλια της εκπαίδευσης, πάνω στα οποία χαράσσονται οι εκάστοτε εκπαιδευτικές πολιτικές. Η παρούσα μελέτη διερευνά τις αντιλήψεις των αναπληρωτών νηπιαγωγών με 0-5 έτη προϋπηρεσίας για το θεσμό του Μέντορα και την χρησιμότητά του. Το δείγμα αποτέλεσαν 8 νηπιαγωγοί, ενώ το εργαλείο συλλογής των δεδομένων που χρησιμοποιήθηκε ήταν η ημι-δομημένη συνέντευξη. Τα αποτελέσματα της έρευνας ανέδειξαν την ανάγκη ενεργοποίησης του θεσμού ο οποίος παραμένει ανενεργός από το 2010. Θέματα που αφορούν τη καθημερινότητα της σχολικής ζωής (σχέσεις με συναδέλφους, σχέσεις με γονείς, υποδομές, διοικητικά καθήκοντα), τη διαχείριση της τάξης και τη διδασκαλία, τη κοινωνική και επαγγελματική ένταξη φαίνεται να απασχολούν ιδιαιτέρως τους νεοεισερχόμενους κατά τα πρώτα τους επαγγελματικά βήματα. Η σωστή , ουσιαστική και στοχευμένη υποστήριξη και καθοδήγηση από έμπειρους Μέντορες, οι οποίοι διαθέτουν χαρακτηριστικά όπως μεγάλη επαγγελματική εμπειρία και ανάλογη κατάρτιση σχετικά με το ρόλο που έχουν κλιθεί να αναλάβουν, αλλά και προσωπικά χαρακτηριστικά όπως ενσυναίσθηση, κοινωνικότητα και επικοινωνιακές δεξιότητες αποτελούν τα εχέγγυα για μια επιτυχημένη μεντορική σχέση η οποία θα βοηθήσει τους νεοεισερχόμενους να αναπτυχθούν επαγγελματικά και προσωπικά, με απώτερο στόχο την παροχή μιας υψηλής ποιότητας εκπαίδευσης που θα απολαμβάνει στο σύνολο της η κοινωνία.
Additional file 1 of Symptoms and impacts in anemia of chronic kidney disease
Creators: name: Mathias, Susan D.
name: Blum, Steven I.
name: Sikirica, Vanja
name: Johansen, Kirsten L.
name: Colwell, Hilary H.
name: Okoro, Tony
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 1: Item S1. Research Team Characteristics and Relationship with Participants. Table S1. Research Team Characteristics. Item S2. Representative CE Interview Questions. Item S3. Literature Review Methods. Table S2. Detailed Search Strings for Selected CKD and Anemia PRO Measures.
Thin front propagation in random shear flows
Creators: name: Chinappi, M.
name: Cencini, M.
name: Vulpiani, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Chemical Physics (physics.chem-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Front propagation in time dependent laminar flows is investigated in the limit of very fast reaction and very thin fronts, i.e. the so-called geometrical optics limit. In particular, we consider fronts evolving in time correlated random shear flows, modeled in terms of Ornstein-Uhlembeck processes. We show that the ratio between the time correlation of the flow and an intrinsic time scale of the reaction dynamics (the wrinkling time $t_w$) is crucial in determining both the front propagation speed and the front spatial patterns. The relevance of time correlation in realistic flows is briefly discussed in the light of the bending phenomenon, i.e. the decrease of propagation speed observed at high flow intensities.
description: 5 Revtex4 pages, 4 figures included
DIFFERENCES IN CONSUMERS OF FRESH TOMATOES AT FOUR RETAIL VENUES
Creators: name: Brumfield, Robin G.
name: Brumfield, Robin G.
Publisher: name: Unknown
Year: 1994
Subjects: Consumer/Household Economics

description: This paper presents the results of surveys of fresh tomato consumers conducted in 1990 in four New Jersey produce venues: a supermarket, a farmers' market, an at-the-farm store, and two roadside stands. The surveys were conducted through face-to-face interviews. Consumers' preferences, purchasing patterns, attitudes and demographics were examined. Results of the surveys suggest that supermarkets should emphasize price and convenience in marketing fresh tomatoes; whereas farmers' markets, at-the-farm stores, and roadside stands should emphasize taste and freshness.
Pseudogaps: Introducing the Length Scale into DMFT
Creators: name: Kuchinskii, E. Z.
name: Nekrasov, I. A.
name: Sadovskii, M. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Pseudogap physics in strongly correlated systems is essentially scale dependent. We generalize the dynamical mean field theory (DMFT) by including into the DMFT equations dependence on correlation length of pseudogap fluctuations via additional (momentum dependent) self-energy Sigma_k. This self-energy describes non-local dynamical correlations induced by short-ranged collective SDW-like antiferromagnetic spin (or CDW-like charge) fluctuations. At high enough temperatures these fluctuations can be viewed as a quenched Gaussian random field with finite correlation length. This generalized DMFT+Sigma_k approach is used for the numerical solution of the weakly doped one-band Hubbard model with repulsive Coulomb interaction on a square lattice with nearest and next nearest neighbour hopping. The effective single impurity problem is solved by numerical renormalization group (NRG). Both types of strongly correlated metals, namely (i) doped Mott insulator and (ii) the case of bandwidth W
description: 21 pages, 10 figures, submitted to HTSC Jubilee issue of Low Temperature Physics
Evolution of the X-Ray Jets from 4U 1755--33
Creators: name: Kaaret, P.
name: Corbel, S.
name: Tomsick, J. A.
name: Lazendic, J.
name: Tzioumis, A. K.
name: Butt, Y.
name: Wijnands, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on new X-ray observations of the large-scale jets recently discovered in X-rays from the black hole candidate 4U 1755-33. Our observations in 2004 show that the jets found in 2001 are still present in X-rays. However, sensitive radio observations in 2004 failed to detect the jets. We suggest that synchrotron radiation is a viable emission mechanism for the jets and that thermal bremsstrahlung and inverse-Compton emission are unlikely on energetic grounds. In the synchrotron interpretation, the production of X-rays requires acceleration of electrons up to ~ 60 TeV, the jet power is ~ 4x10^35 erg s^-1, and the radio non-detection requires a spectral index alpha > -0.65 (S_ν\propto ν^α) which is similar to the indexes found in lobes surrounding some other compact objects. We find an upper limit on the flux of 4U 1755-33 in quiescence of 5x10^-16 erg cm^-2 s^-1 in the 0.3-8 keV band.
description: accepted by ApJ, 11 pages, 2 color figures
Electromagnetic Dipole Radiation Fields, Shear-Free Congruences and Complex Center of Charge World Lines
Creators: name: Kozameh, Carlos N.
name: Newman, Ezra T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that for asymptotically vanishing Maxwell fields in Minkowski space with non-vanishing total charge, one can find a unique geometric structure, a null direction field, at null infinity. From this structure a unique complex analytic world-line in complex Minkowski space that can be found and then identified as the complex center of charge. By ''sitting'' - in an imaginary sense, on this world-line both the (intrinsic) electric and magnetic dipole moments vanish. The (intrinsic) magnetic dipole moment is (in some sense) obtained from the `distance' the complex the world line is from the real space (times the charge). This point of view unifies the asymptotic treatment of the dipole moments For electromagnetic fields with vanishing magnetic dipole moments the world line is real and defines the real (ordinary center of charge). We illustrate these ideas with the Lienard-Wiechert Maxwell field. In the conclusion we discuss its generalization to general relativity where the complex center of charge world-line has its analogue in a complex center of mass allowing a definition of the spin and orbital angular momentum - the analogues of the magnetic and electric dipole moments.
description: 17 pages
Staticity Theorem for Higher Dimensional Generalized Einstein-Maxwell System
Creators: name: Rogatko, Marek
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We derive formulas for variations of mass, angular momentum and canonical energy in Einstein (n-2)-gauge form field theory by means of the ADM formalism. Considering the initial data for the manifold with an interior boundary which has the topology of (n-2)-sphere we obtained the generalized first law of black hole thermodynamics. Supposing that a black hole evevt horizon comprisesw a bifurcation Killing horizon with a bifurcate surface we find that the solution is static in the exterior world, when the Killing timelike vector field is normal to the horizon and has vanishing electric or magnetic fields on static slices.
description: 10 pages, REVTEX, to published in Phys.Rev. D15
Numerical simulations of quasar absorbers
Creators: name: Theuns, Tom
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The physical state of the intergalactic medium can be probed in great detail with the intervening absorption systems seen in quasar spectra. The properties of the Hydrogen absorbers depend on many cosmological parameters, such as the matter-power spectrum, reionisation history, ionising background and the nature of the dark matter. The spectra also contain metal lines, which can be used to constrain the star formation history and the feedback processes acting in large and small galaxies. Simulations have been instrumental in investigating to what extent these parameters can be unambiguously constrained with current and future data. This paper is meant as an introduction to this subject, and reviews techniques and methods for simulating the intergalactic medium.
description: 20 pages, to appear in IAU 199 conf proc, "Probing Galaxies through Quasar Absorption Lines," eds. Williams, Shu, Menard
Computing the elastic mechanical properties of rod-like DNA nanostructures
Creators: name: Chhabra, Hemani
name: Mishra, Garima
name: Cao, Yijing
name: Prešern, Domen
name: Skoruppa, Enrico
name: Tortora, Maxime M. C.
name: Doye, Jonathan P. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: To study the elastic properties of rod-like DNA nanostructures, we perform long simulations of these structure using the oxDNA coarse-grained model. By analysing the fluctuations in these trajectories we obtain estimates of the bend and twist persistence lengths, and the underlying bend and twist elastic moduli and couplings between them. Only on length scales beyond those associated with the spacings between the interhelix crossovers do the bending fluctuations behave like those of a worm-like chain. The obtained bending persistence lengths are much larger than that for double-stranded DNA and increase non-linearly with the number of helices, whereas the twist moduli increase approximately linearly. To within the numerical error in our data, the twist-bend coupling constants are of order zero. That the bending persistence lengths we obtain are generally somewhat higher than in experiment probably reflects both that the simulated origami have no assembly defects and that the oxDNA extensional modulus for double-stranded DNA is too large.