cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Ανάλυση φαινομένου ψυχρής νησίδας σε αστικά πάρκα
Creators: name: Σταυρακακη Μαρια
Publisher: name: Technical University of Crete
Year: 2017

description: Στην παρούσα εργασία μελετήθηκε ο βαθμός επίδρασης του Κήπου Χανίων ως ψυχρή νησίδα στον μετριασμό του φαινομένου της Αστικής Θερμικής Νησίδας εντός της πόλης των Χανίων. Μετρήσεις πραγματοποιήθηκαν από τον Ιούλιο έως και τα μέσα Σεπτεμβρίου κατά τις μεσημβρινές και απογευματινές ώρες. Για την ανάλυση και διεξαγωγή αποτελεσμάτων πραγματοποιήθηκε σύγκριση με δεδομένα 2 αστικών μετεωρολογικών σταθμών του Νομού Χανίων, καθώς και με δεδομένα από μετρήσεις στο πεδίο. Τα δεδομένα αυτά χρησιμοποιήθηκαν για τη συγκριτική ανάλυση των θερμοκρασιών σε αστικό επίπεδο. Σύμφωνα με τα αποτελέσματα για τις μεσημβρινές ώρες η μέση ένταση ψυχρής νησίδας του Κήπου παρουσιάζει αρνητικές τιμές γεγονός που αποδεικνύει ότι ο Κήπος είναι πιο ‘’δροσερός’’ από τον αστικό χώρο, επιδρώντας στο μικροκλίμα της πόλης. Αντίστοιχα, για τις απογευματινές ώρες η μέση ένταση ψυχρής νησίδας του πάρκου αποκτά θετικές τιμές με αποτέλεσμα ο Κήπος να λειτουργεί ως θερμή νησίδα για την περιβάλλουσα περιοχή. Επιπλέον, για θερμοκρασίες μεγαλύτερες από 30οC ο Κήπος παρουσιάζει μεγάλη ένταση ψυχρής νησίδας, καθιστώντας το χώρο αυτόν ιδιαιτέρως δροσερό σε σχέση με τις περιβάλλουσες περιοχές, ενώ για θερμοκρασίες μικρότερες των 29οC ο Κήπος παρουσιάζει υψηλότερες θερμοκρασίες από το αστικό κέντρο. Σημαντικές θερμοκρασιακές αλλαγές παρατηρήθηκαν στον Κήπο και κατά την αλλαγή της περιόδου μετρήσεων. Επιπρόσθετα, αξιολογήθηκε η ικανότητα του Κήπου να δράσει ως ψυχρή νησίδα για τις περιβάλλουσες περιοχές, με τη διεκπεραίωση 3 διαδρομών, εκ των οποίων οι 2 εκτείνονταν σε διαφορετική κατεύθυνση από αυτόν και σε απόσταση 248m και 104m. Η ένταση ψυχρής νησίδας του πάρκου ισούταν με -1.2Κ για τη διαδρομή 2 και με -1.3Κ για τη διαδρομή 3 τις μεσημβρινές ώρες, ενώ οι αντίστοιχες τιμές είναι 1.5Κ και 1.6Κ για τις απογευματινές ώρες. Ιδιαιτέρως σημαντική επίδραση φαίνεται να έχει η ένταση της ηλιακής ακτινοβολίας στον ρυθμό θέρμανσης και ψύξης των καταγεγραμμένων σημείων των διαδρομών. Για την 2η διαδρομή ο ρυθμός θέρμανσης είχε τιμή 1.1Κ/100m για το μεσημέρι και ρυθμό ψύξης 1.38Κ/100m για το απόγευμα ενώ οι αντίστοιχες τιμές για την διαδρομή 3 είναι 2.1Κ/100m και 2.56Κ/100m.
A multi-wavelength study of nuclear activity and environment of a low power radio galaxy CTD 86
Creators: name: Pandge, M. B.
name: Dewangan, G. C.
name: Singh, K. P.
name: Patil, M. K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present an X-ray study of the nuclear and extended emission of a nearby Fanaroff & Riley class I (FR-I) radio galaxy CTD 86 based on the \xmm{} observations. Two different components observed are : diffuse thermal emission from hot gas ($kT\sim 0.79\kev$, $n_e\sim 10^{-3}{\rm cm^{-3}}$, $L_X \sim 5\times10^{42}{\rm erg s^{-1}}$ extended over $\sim 186{\rm kpc}$), and unresolved nuclear emission exhibiting mild activity. The hot gaseous environment of CTD 86 is similar to that found in groups of galaxies or in bright early-type galaxies. No clear signatures of radio-lobe interaction with the diffuse hot gas is evident in this case. X-ray emission from the nucleus is well constrained by an intrinsically absorbed ($N_H \sim 5.9\times10^{22}{\rm cm^{-2}}$) power law ($Γ\sim 1.5$) with $2-10\kev$ luminosity $L_X \sim 2.1\times10^{42}{\rm erg s^{-1}}$. We have measured the stellar velocity dispersion, $σ=182\pm8\kms$, for the CTD 86 and estimated a mass $M_{BH}\sim 9\times 10^7{\rm M_\odot}$ with $L_{bol}/L_{Edd} \sim 4\times10^{-3}$. The low $L_{bol}/L_{Edd}$ rate and high $L_X/L_{[O III]}$ ratio suggest that the central engine of CTD 86 consists of a truncated accretion disk lacking a strong ionizing UV radiation and an inner hot flow producing the X-ray emission. The truncated disk is likely to be inclined with ($i\sim40^\circ-50^\circ$) such that our line of sight passes through the outer regions of a putative torus and thus results in high X-ray absorption. We have also identified two bright X-ray sources, SDSS J142452.11+263715.1 and SDSS J142443.78+263616.2, near CTD 86. SDSS J142452.11+263715.1 is a type 1 active galactic nucleus at $z=0.3761$ and unabsorbed $0.3-10\kev$ X-ray luminosity $L_X\sim 8 \times 10^{43}{\rm erg s^{-1}}$, while SDSS J142443.78+263616.2 is probably a galaxy with an active nucleus.
description: 19 pages, 3 Tables, 9 figures, Accepted for publication in MNRAS
Proposals which speed-up function-space MCMC
Creators: name: Law, Kody J. H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Methodology (stat.ME)
subject: Dynamical Systems (math.DS)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Inverse problems lend themselves naturally to a Bayesian formulation, in which the quantity of interest is a posterior distribution of state and/or parameters given some uncertain observations. For the common case in which the forward operator is smoothing, then the inverse problem is ill-posed. Well-posedness is imposed via regularisation in the form of a prior, which is often Gaussian. Under quite general conditions, it can be shown that the posterior is absolutely continuous with respect to the prior and it may be well-defined on function space in terms of its density with respect to the prior. In this case, by constructing a proposal for which the prior is invariant, one can define Metropolis-Hastings schemes for MCMC which are well-defined on function space, and hence do not degenerate as the dimension of the underlying quantity of interest increases to infinity, e.g. under mesh refinement when approximating PDE in finite dimensions. However, in practice, despite the attractive theoretical properties of the currently available schemes, they may still suffer from long correlation times, particularly if the data is very informative about some of the unknown parameters. In fact, in this case it may be the directions of the posterior which coincide with the (already known) prior which decorrelate the slowest. The information incorporated into the posterior through the data is often contained within some finite-dimensional subspace, in an appropriate basis, perhaps even one defined by eigenfunctions of the prior. We aim to exploit this fact and improve the mixing time of function-space MCMC by careful rescaling of the proposal. To this end, we introduce two new basic methods of increasing complexity, involving (i) characteristic function truncation of high frequencies and (ii) hessian information to interpolate between low and high frequencies.
OSp(5|4) Superconformal Symmetry of N=5 Chern-Simons Theory
Creators: name: Chen, Fa-Min
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We demonstrate that the general D=3, N=5 Chern-Simons matter theory possesses a full OSp(5|4) superconformal symmetry, and construct the corresponding superconformal currents. The closure of the superconformal algebra is verified in detail. We also show that the conserved OSp(6|4) superconformal currents in the general N=6 theory can be obtained as special cases of the OSp(5|4) currents by enhancing the R-symmetry of the N=5 theory from USp(4) to SU(4).
description: 24 pages, minor changes, version published in Nucl.Phys. B
The history of metal enrichment of NGC3115 galaxy :  monolitic vs merger formation
Creators: name: Nykytyuk, Tetyana
Publisher: name: Zenodo
Year: 2023

description: The history of metal enrichment of NGC3115 galaxy : monolitic  vs  merger formation. 
Chemical evolution of  the massive lenticular galaxy NGC3115 is considered. In the framework of monolithic and  hierarchical merger scenaries, observed stellar metallicity distributions for the outer and intermediate halo regions of a given galaxy were simulated. It is shown that the "excess" of metal-poor stars  in the  metallicity distribution of the outer halo  of NGC 3115 can be reproduced quite well in the framework of merger scenario. At the same time, the observational  stellar metallicity distribution  for the intermediate halo does not show such an "excess", therefore, this can be reproduced in a monolithic model with accretion of unenriched gas. The obtained results allows to assume that a formation of the outer halo  of galaxy NGC3115 could occur by accretion of individual non-massive fragments and such fragments must be at least 6.
title: Δειγματοληψία υπερκείμενου χώρου με χρήση μικροεκχύλισης υγρής φάσης υπό συνθήκες κενού
Creators: name: Κουτελα Νικη
Publisher: name: Technical University of Crete
Year: 2017

description: Η ρύπανση του περιβάλλοντος από επικίνδυνους ρύπους που απαντώνται σε μικρές συγκεντρώσεις, αποτελεί ένα μείζον θέμα καθώς μπορούν να προκαλέσουν σημαντικές επιπτώσεις τόσο στην υγεία των ανθρώπων αλλά και στα οικοσυστήματα. Η ανίχνευση ιχνοποσοτήτων τέτοιων ρύπων είναι αντικείμενο σύγχρονης έρευνας και μέχρι σήμερα έχουν δημοσιευτεί διάφορες τεχνικές προετοιμασίας δειγμάτων όπως αυτή της μικροεκχύλισης στερεής ή υγρής φάσης υπερκείμενου χώρου. Στην παρούσα διπλωματική εργασία ερευνάται για πρώτη φορά η δυνατότητα χρήσης μιας νέας μεθόδου δειγματοληψίας ημι-πτητικών ενώσεων από την υπερκείμενη φάση σε υδατικά δείγματα με χρήση της τεχνικής μικροεκχύλισης υγρής φάσης σε συνθήκες χαμηλής πίεσης. Η νέα μέθοδος ονομάζεται μικροεκχύλιση μονής σταγόνας υπερκείμενου χώρου κάτω από συνθήκες κενού (vacuum assisted single drop microextraction, Vac-HSSDME) και επιτυγχάνει την ταχεία, αποτελεσματική αλλά και σε χαμηλές θερμοκρασίες εκχύλιση ημι-πτητικών ρύπων που είναι και οι πιο δύσκολοι να εκχυλιστούν. Οι οργανικοί ρύποι που χρησιμοποιήθηκαν για την βελτιστοποίηση της μεθόδου ήταν τρεις αντιπροσωπευτικές ενώσεις της ομάδας των Πολυκυκλικών Αρωματικών Υδρογονάνθρακων (PAHs). Τα αποτελέσματα της βελτιστοποίησης της μεθόδου υπέδειξαν ως βέλτιστες συνθήκες: 20 μL οκτανόλης ως φάση δέκτη να κάνουν για 10 min δειγματοληψία του υπερκείμενου χώρου όγκου δείγματος 7 mL τοποθετημένα αεροστεγώς σε  22 mL φιαλίδια και κάτω από  ανάδευση 500 rpm αλλά και στους 35 °C. Κάτω από τις βέλτιστες συνθήκες η μέθοδος Vac-HSSDME, βρέθηκε να είναι γραμμική μέσα στο διάστημα συγκεντρώσεων 100 – 5000 ng/L με συντελεστής συσχέτισης πάνω από 0,999. Τα όρια ανίχνευσης για επιμολυσμένα υδατικά διαλύματα βρέθηκαν να κυμαίνονται από 37-160 ng/L. Η ακρίβεια της μεθόδου κυμαίνεται από 4,7 έως 9,2%. Σε όλη την πορεία της εργασίας τα αποτελέσματα σε κάθε στάδιο αλλά και απόδοση της μεθόδου συγκρίθηκαν με την συμβατική τεχνική δειγματοληψίας HSSDΜE υπό ατμοσφαιρικές συνθήκες. Τα αποτελέσματα έδειξαν ότι η δειγματοληψία υπό συνθήκες κενού επιταχύνει την μεταφορά αναλυτών με μικρές σταθερές Henry στην μικροσταγόνα και συμβάλλει στην ανάπτυξη ευαίσθητων και επαναλήψιμων μεθόδων. Πρόκειται για τη πρώτη παγκόσμια ερευνητική εργασία που μελετά την δειγματοληψία HSSDME κάτω από συνθήκες κενού.
title: Μοντελοποίηση της ροής υπόγειων υδάτων του υδροφορέα περιοχής Μοιρών Ηρακλείου, Κρήτης
Creators: name: Θωμαδακης Νικολαος
Publisher: name: Technical University of Crete
Year: 2017

description: Η εργασία αυτή εξετάζει τις μεθόδους που χρησιμοποιούνται στα διάφορα μοντέλα κατά την προσομοίωση της κίνησης του υπόγειου υδροφορέα και τη μεταφορά ρύπων μέσα σε αυτόν. Στο θεωρητικό τμήμα της εργασίας περιγράφονται οι εξισώσεις και οι οριακές συνθήκες που διέπουν ένα τέτοιου είδους σύστημα υπόγειας ροής και γίνεται ανάλυση των δύο επικρατέστερων μεθόδων, εκείνης των πεπερασμένων στοιχείων και εκείνης των πεπερασμένων διαφορών. Κατόπιν, γίνεται αναφορά στο μοντέλο που χρησιμοποιείται στην παρούσα εργασία, το PTC (Princeton Transport Code), και περιγράφονται αναλυτικά οι εξισώσεις και οι οριακές συνθήκες που το διέπουν.
Στο δεύτερο τμήμα της εργασίας γίνεται σύντομη περιγραφή της περιοχής μελέτης (Μοίρες, Ηράκλειο Κρήτης) με μετεωρολογικά και κλιματικά στοιχεία (κατακρημνίσεις, άνεμοι), αλλά και στοιχεία για τη γεωλογία και το φυσικό περιβάλλον της περιοχής. Ακολουθεί η βαθμονόμηση του μοντέλου, βάσει των δεδομένων που είναι διαθέσιμα για την περιοχή. Αφού η διαδικασία περιγραφεί αναλυτικά σε βήματα, γίνεται αναφορά στα αποτελέσματα του μοντέλου και εξακρίβωση του κατά πόσον το μοντέλο αναπαριστά ικανοποιητικά την πραγματική κατάσταση της ροής των υπογείων υδάτων του υδροφορέα της περιοχής των Μοιρών.
Τέλος, εξετάζονται δύο σενάρια: στο μεν πρώτο προτείνεται αύξηση της ποσότητας νερού που αντλούν τα πηγάδια κατά 10% και μείωση της βροχόπτωσης κατά 10%, ενώ στο δεύτερο αύξηση της ποσότητας νερού που αντλούν τα πηγάδια κατά 20% και μείωση της βροχόπτωσης κατα 20%.
description: This paper examines the methods used in various models in order to simulate the movement of the underground aquifer and the transfer of pollutants within it. The theoretical part of the paper describes the equations and boundary conditions governing such a system of underground flow and analyzes the two most prevalent methods, that of finite elements and that of finite differences. Then the model used in the present study, the PTC (Princeton Transport Code), is mentioned, and the equations and boundary conditions governing it are described in detail.
In the second part of this paper, a brief description of the study area (Mires, Heraklion, Crete) is presented with meteorological and climatic data (rain, wind data), as well as data on geology and the natural environment of the area. The calibration of the model follows, based on the data available for the region. The process is described in steps. Then reference is made to the results of the model and to the verification of whether the model satisfactorily represents the actual condition of the groundwater flow of the Mires aquifer. Finally, two scenarios are examined, the first proposes increase in quantity of the extracted water from the pumping wells by 10% and the reduction of rainfall by 10%, while the second proposes increase in quantity of the extracted water from the pumping wells by 20% and the reduction of rainfall by 20%.
title: Αυτοματοποιημένη οπτική αναγνώριση αλφαριθμητικών χαρακτήρων σε ψηφιακές εικόνες πραγματικών συνθηκών
Creators: name: Κωνσταντάκης Γεώργιος
Publisher: name: Technical University of Crete
Year: 1999

description: Μη διαθέσιμο
The CO-to-H2 Conversion Factor and Dust-to-Gas Ratio on Kiloparsec Scales in Nearby Galaxies
Creators: name: Sandstrom, K. M.
name: Leroy, A. K.
name: Walter, F.
name: Bolatto, A. D.
name: Croxall, K. V.
name: Draine, B. T.
name: Wilson, C. D.
name: Wolfire, M.
name: Calzetti, D.
name: Kennicutt, R. C.
name: Aniano, G.
name: Meyer, J. Donovan
name: Usero, A.
name: Bigiel, F.
name: Brinks, E.
name: de Blok, W. J. G
name: Crocker, A.
name: Dale, D.
name: Engelbracht, C. W.
name: Galametz, M.
name: Groves, B.
name: Hunt, L. K.
name: Koda, J.
name: Kreckel, K.
name: Linz, H.
name: Meidt, S.
name: Pellegrini, E.
name: Rix, H. -W.
name: Roussel, H.
name: Schinnerer, E.
name: Schruba, A.
name: Schuster, K. -F.
name: Skibba, R.
name: van der Laan, T.
name: Appleton, P.
name: Armus, L.
name: Brandl, B.
name: Gordon, K.
name: Hinz, J.
name: Krause, O.
name: Montiel, E.
name: Sauvage, M.
name: Schmiedeke, A.
name: Smith, J. D. T.
name: Vigroux, L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present kiloparsec (kpc) spatial resolution maps of the CO-to-H2 conversion factor (alpha_co) and dust-to-gas ratio (DGR) in 26 nearby, star-forming galaxies. We have simultaneously solved for alpha_co and DGR by assuming that the DGR is approximately constant on kpc scales. With this assumption, we can combine maps of dust mass surface density, CO integrated intensity and HI column density to solve for both alpha_co and DGR with no assumptions about their value or dependence on metallicity or other parameters. Such a study has just become possible with the availability of high resolution far-IR maps from the Herschel key program KINGFISH, 12CO J=(2-1) maps from the IRAM 30m large program HERACLES and HI 21-cm line maps from THINGS. We use a fixed ratio between the (2-1) and (1-0) lines to present our alpha_co results on the more typically used 12CO J=(1-0) scale and show using literature measurements that variations in the line ratio do not effect our results. In total, we derive 782 individual solutions for alpha_co and DGR. On average, alpha_co = 3.1 Msun pc^-2 (K km s^-1)^-1 for our sample with a standard deviation of 0.3 dex. Within galaxies we observe a generally flat profile of alpha_co as a function of galactocentric radius. However, most galaxies exhibit a lower alpha_co in the central kpc---a factor of ~2 below the galaxy mean, on average. In some cases, the central alpha_co value can be factors of 5 to 10 below the standard Milky Way (MW) value of alpha_co,MW =4.4 Msun pc^-2 (K km s^-1)^-1. While for alpha_co we find only weak correlations with metallicity, DGR is well-correlated with metallicity, with an approximately linear slope. Finally, we present several recommendations for choosing an appropriate alpha_co for studies of nearby galaxies.
description: accepted to ApJ July 9, 2013, 63 pages, 2-column ApJ format, p38-63 are an image atlas
The violent turn in soldier's letters
Creators: name: Janz, Nina
Publisher: name: Zenodo
Year: 2023
Subjects: War letters; violence; WWII

description: The ego documents, especially war letters from the front of the soldiers, have been studied from many points of view. The letters contain much information about the use of 'violence', whether in terms of the striking power of the weapons and the encounters and dealings with locals, prisoners of war or the 'enemy'.
 As the main task of the soldiers was to use violence to win or avoid being killed, the understanding and use of violence (towards enemy soldiers and locals) is a constant factor in the letters. As authors such as Latzel (Latzel 2004) and Buchbender (Buchbender and Sterz 1983) have studied the expression and use of war letters by soldiers, I, too, have come across many references and hints of the concept of violence in the sources in my current project.
 In the WARLUX project, we have collected the ego-documents of Wehrmacht soldiers' (letters, diaries and photographs). In my contribution to this conference, I will discuss the use and reference of ‘violence’ in soldiers' letters during the Second World War in the context of an in-depth study of the reading and analysis of the letters. Even if the sources are biased from the interpretative side, these doubts are nevertheless urgent to consider when studying violence and the effects of violence in wars.
 After a historiographical overview, I will present my current project and the extensive results of the war letters and diaries of Wehrmacht soldiers. With the help of digital tools (e.g. topic modelling and text analysis), I will present the results of the representation and justification and understanding of ‘violence’. Following the conference's theme, I will analyse different sources in which the ‘violent turn’ can be depicted. I will grasp soldiers' perceptions (and beliefs) about using force and the meaning and motivation to hold arms and pull the trigger. Even though the role of soldiers is clearly defined, the use and application of the concept of force are still worth further discussion. Soldiers' letters are one of the most widely circulated sources on the Second World War - over two billion letters were sent between the front and home. These letters are a rich yet controversial source, but they offer multiple opportunities to analyse the use and understanding of violence by millions of individuals.
title: Προσεγγιστική ανάλυση γραμμών παραγωγής με αναξιόπιστες μηχανές και πεπερασμένες αποθήκες
Creators: name: Καρνέσης Παναγιώτης
Publisher: name: Technical University of Crete
Year: 1992

description: Μη διαθέσιμο
The Strength of Varying Tie Strength
Creators: name: Bruggeman, Jeroen
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: ``The Strength of Weak Ties" argument (Granovetter 1973) says that the most valuable information is best collected through bridging ties with other social circles than one's own, and that those ties tend to be weak. Aral and Van Alstyne (2011) added that to access complex information, actors need strong ties (``high bandwidth") instead. These insights I integrate and generalize by pointing at actors' benefits and costs. Weak ties are well-suited for relatively simple information at low costs, whereas for complex information, the best outcomes are expected for those actors who vary their bandwidths along with the value of information accessed. To support my claim I use all patents in the USA (two million) over the period 1975---1999.
description: This paper replaces an earlier one with the title "Network Diversity and Economic Development" [arXiv:1011.0208]
title: Οργάνωση παραλαβής εντολής επισκευής οικιακών συσκευών στον τομέα παροχής τεχνικών υπηρεσιών για την εταιρία BSH
Creators: name: Κουκούλης Χαράλαμπος
Publisher: name: Technical University of Crete
Year: 1999

description: Μη διαθέσιμο
Quantum transport of pseudospin-polarized Dirac fermions in gapped graphene nanostructures
Creators: name: Majidi, Leyla
name: Zareyan, Malek
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the unusual features of the quantum transport in gapped monolayer graphene, which is in a pseudospin symmetry-broken state with a net perpendicular pseudomagnetization. Using these pseudoferromagnets (PFs), we propose a perfect pseudospin valve effect that can be used for realizing pseudospintronics in monolayer graphene. The peculiarity of the associated effects of pseudo spin injection and pseudo spin accumulation are also studied. We further demonstrate the determining effect of the sublattice pseudospin degree of freedom on Andreev reflection and the associated proximity effect in hybrid structures of PFs and a superconductor in S/PF and PF/S/PF geometries. In particular, we find a peculiar Andreev reflection that is associated with an inversion of the z component of the carriers pseudospin vector. Our results show that the gapped normal graphene behaves like a ferromagnetic graphene and the effect of the pseudospin degree of freedom in gapped graphene is as important as the spin in a ferromagnetic graphene.
description: 19 pages, 10 figures. Accepted for publication in the Journal of Computational Electronics special issue on "Electronic transport in graphene nanostructures and devices". A review of two submissions (arXiv:1208.2461, arXiv:1110.0637) + additional results for the pseudospin injection in pseudoferromaget/normal graphene junctions and the superconducting pseudospin valves
THE PROCESS OF REGULATING THE REGION'S ECONOMIC DEVELOPMENT
Creators: name: Bekmurodova, Saodat
Publisher: name: Zenodo
Year: 2023

description: This article provides comments on the process of regulating the economic development of the region, focusing on the annual development and modernization of the industrial facilities of the region, increasing internal and external investments as the main factors of production development. necessary. The need to develop a strategy for the development of financial and economic authority together with the development of the regional economy was mentioned.
title: Εκτίμηση ποσοστού ελαττωματικών προϊόντων με βάση τον συνδυασμό γραμμικής παλινδρόμησης με τη θεωρία των ασαφών συνόλων
Creators: name: Οικονόμου Κωνσταντίνος
Publisher: name: Technical University of Crete
Year: 1993

description: Μη διαθέσιμο
title: ПЕРВОЕ ВЫЯВЛЕНИЕ СОСНОВОГО СЕМЕННОГО КЛОПА (LEPTOGLOSSUS OCCIDENTALIS HEIDEMANN, 1910) – НОВОГО ИНВАЙДЕРА В СТАВРОПОЛЕ
Creators: name: Е.В. Ченикалова, Е.В.
Publisher: name:    Федеральное государственное бюджетное научное учреждение «Северо-Кавказский федеральный научный аграрный центр»
Year: 2023
Subjects: сосновый семенной клоп, г. Ставрополь, кормовые растения, карантин, энтомофаги, вредоносность, хвойные.
gall midges, invasive species, trophic relation- ships, distribution, Caragana, Calophaca, Halimodendron, Hedys- areae, Erysiphe (Microsphaera) palczewskii.

description: Новый для России агрессивный вид-вселенец – сосновый семенной клоп Leptoglossus occidentalis Heidemann, 1910 – был впервые обнаружен в центре г. Ставрополя в ноябре 2023 г. Впервые отмеченный в Европе на севере Италии в 1999 г., клоп постепенно распространяется и заселяет хвойные деревья в Польше, на Украине, в Причерноморье, активно продвигается по Евразии. В 2009 г. обнаружен в Ростовской области. В 2012 г. выявлен в посадках сосняков степной зоны Краснодар- ского края. В статье приведены сведения о распространении и краткая характеристика экологии и жизненного цикла этого карантинного фитофага.
description: For the first time, an overview of the fauna of gall midges de- veloping on plants of the genus Caragana is presented. 8 species from 5 genera were identified, 2 of which (Bremiola, Desertomyia) are specific to legumes. All species are Palearctic, found in Kazakh- stan on 10 species of Caragana. On C. arborescens, which is wide- spread within its secondary range, 4 species of gall midges from 3 genera are known. In Europe and Russia, 3 species were found, the larvae of which develop on Dasineura sibirica Marikovskij in leaf galls, Contarinia caraganicola Marikovskij in flower galls, and C. rhodendorfi Fedotova in fruit galls. For D. sibirica, first found in northwestern Russia (St.-Petersburg), the northern boundary of its range has been clarified. The fourth species, Bremiola (s. str.) cara- ganicola Fedotova, which forms leaf galls, is known only from the type habitat in Altai (Listvyaga Ridge). The features of the biology, distribution and formation of the fauna of gall midges on caragana and their evolutionary connections with the fauna known from plants from the close genera Calophaca and Halimodendron are shown.
The Kinetics of Wealth and the Origin of the Pareto Law
Creators: name: Boghosian, Bruce M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: General Finance (q-fin.GN)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: An important class of economic models involve agents whose wealth changes due to transactions with other agents. Several authors have pointed out an analogy with kinetic theory, which describes molecules whose momentum and energy changes due to interactions with other molecules. We pursue this analogy and derive a Boltzmann equation for the time evolution of the wealth distribution of a population of agents for the so-called Yard-Sale Model of wealth exchange. We examine the solutions to this equation by a combination of analytical and numerical methods, and investigate its long-time limit. We study an important limit of this equation for small transaction sizes, and derive a partial integrodifferential equation governing the evolution of the wealth distribution in a closed economy. We then describe how this model may be extended to include features such as inflation, production and taxation. In particular, we show that the model with taxation is capable of explaining the basic features of the Pareto law, namely a lower cutoff to the wealth density at small values of wealth, and approximate power-law behavior at large values of wealth.
description: 31 pages, 28 figures
title: >>3D οπτικοποίηση του τσουνάμι του 365 μ.Χ. στο Παλιό Λιμάνι των Χανίων με τη χρήση του ArcGis
Creators: name: Μαρμάνης Δημήτρης
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
title: Διαχείριση υπόγειου υδροφορέα με χρήση μοντέλου 3-D στην ευρύτερη περιοχή Πηγών Αγιάς Χανίων
Creators: name: Ταπόγλου Ευδοκία
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
Betti tables of $p$-Borel-fixed ideals
Creators: name: Caviglia, Giulio
name: Kummini, Manoj
Publisher: name: arXiv
Year: 2012
Subjects: subject: Commutative Algebra (math.AC)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 13D02

description: In this note we provide a counter-example to a conjecture of K. Pardue [Thesis, Brandeis University, 1994.], which asserts that if a monomial ideal is $p$-Borel-fixed, then its $\naturals$-graded Betti table, after passing to any field does not depend on the field. More precisely, we show that, for any monomial ideal $I$ in a polynomial ring $S$ over the ring $\ints$ of integers and for any prime number $p$, there is a $p$-Borel-fixed monomial $S$-ideal $J$ such that a region of the multigraded Betti table of $J(S \otimes_\ints \ell)$ is in one-to-one correspondence with the multigraded Betti table of $I(S \otimes_\ints \ell)$ for all fields $\ell$ of arbitrary characteristic. There is no analogous statement for Borel-fixed ideals in characteristic zero. Additionally, the construction also shows that there are $p$-Borel-fixed ideals with non-cellular minimal resolutions.
description: 6pp
CMB Distortions from Damping of Acoustic Waves Produced by Cosmic Strings
Creators: name: Tashiro, Hiroyuki
name: Sabancilar, Eray
name: Vachaspati, Tanmay
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study diffusion damping of acoustic waves in the photon-baryon fluid due to cosmic strings, and calculate the induced $μ$- and $y$-type spectral distortions of the cosmic microwave background. For cosmic strings with tension within current bounds, their contribution to the spectral distortions is subdominant compared to the distortions from primordial density perturbations.
description: version published in JCAP
title: Μοντελοποίηση της υπόγειας ροής της περιοχής Κάτω Μυραμβέλλου Λασιθίου Κρήτης
Creators: name: Χαραλαμπάκης Χαρίδημος
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
ПУТИ ПОВЫШЕНИЯ УРОВНЯ ЗАНЯТОСТИ НАСЕЛЕНИЯ В ЦИФРОВОЙ ЭКОНОМИКЕ
Creators: name: Назарова, Гулруҳ
Publisher: name: Zenodo
Year: 2023

description: В годы независимости большое внимание уделялось вопросам повышения уровня жизни населения, обеспечения достойными рабочими местами, подготовки кадров.  В то же время достигнут значительный прогресс в результате эффективных экономических реформ и ряда позитивных изменений в сферах, связанных с интеллектуальным потенциалом. Из-за особого внимания, уделяемого молодежи на рынке труда, высока доля занятых по отношению к общей численности населения.
Noise-aided Logic in an Electronic Analog of Synthetic Genetic Networks
Creators: name: Hellen, Edward H.
name: Dana, Syamal K.
name: Kurths, Jurgen
name: Kehler, Elizabeth
name: Sinha, Sudeshna
Publisher: name: arXiv
Year: 2012
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We report the experimental verification of noise-enhanced logic behaviour in an electronic analog of a synthetic genetic network, composed of two repressors and two constitutive promoters. We observe good agreement between circuit measurements and numerical prediction, with the circuit allowing for robust logic operations in an optimal window of noise. Namely, the input-output characteristics of a logic gate is reproduced faithfully under moderate noise, which is a manifestation of the phenomenon known as Logical Stochastic Resonance. The two dynamical variables in the system yield complementary logic behaviour simultaneously. The system is easily morphed from AND/NAND to OR/NOR logic.
description: 14 pages, 7 figures. Submitted. Revised 16 pages, 9 figures
Non-perturbative λΦ^4 in D=1+1: an example of the constructive quantum field theory approach in a schematic way
Creators: name: Gueron, Jorge
name: Leston, Mauricio
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: During the '70, several relativistic quantum field theory models in $D=1+1$ and also in $D=2+1$ have been constructed in a non-perturbative way. That was done in the so-called {\it constructive quantum field theory} approach, whose main results have been obtained by a clever use of Euclidean functional methods. Although in the construction of a single model there are several technical steps, some of them involving long proofs, the constructive quantum field theory approach contains conceptual insights about relativistic quantum field theory that deserved to be known and which are accessible without entering in technical details. The purpose of this note is to illustrate such insights by providing an oversimplified schematic exposition of the simple case of $λΦ^4$ (with $m>0$) in $D=1+1$. Because of the absence of ultraviolet divergences in its perturbative version, this simple example -although does not capture all the difficulties in the constructive quantum field theory approach- allows to stress those difficulties inherent to the non-perturbative definition. We have made an effort in order to avoid several of the long technical intermediate steps without missing the main ideas and making contact with the usual language of the perturbative approach.
description: 63 pages. Typos corrected
Three qubit Grover's algorithm using superconducting quantum interference devices in cavity QED
Creators: name: Waseem, Muhammad
name: Ahmed, Rizwan
name: Irfan, Muhammad
name: Qamar, Shahid
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a scheme for the implementation of three qubit Grover's algorithm using four-level superconducting quantum interference devices (SQUIDs) coupled to a superconducting resonator. The scheme is based on resonant, off-resonant interaction of the cavity field with SQUIDs and the application of classical microwave pulses. We show that adjustment of SQUID level spacing during the gate operations, adiabatic passage, and second-order detuning are not required that leads to faster implementation. We also show that the marked state can be searched with high fidelity even in the presence of level decay and cavity dissipation.
description: 12 pages, 7 figures. Quantum Information Processing, 2013
Die Schutzgesetzeigenschaft i.S.d. § 823 Abs. 2 BGB von kapitalmarktrechtlichen Vorschriften
Creators: name: Haak, Lucas Phillip
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2023
Subjects: subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::340 | Recht

description: Die Thesis untersucht die Schutzgesetzeigenschaft kapitalmarktrechtlicher Vorschriften i.S.d. § 823 Abs. 2 BGB. Ziel ist es, die wesentlichen Argumentationslinien, welche die wissenschaftliche Diskussion um den Individualschutzcharakter prägen, auf ihre Güte und Reliabilität zu überprüfen. Im Fokus stehen dabei insbesondere die europarechtlichen Implikationen für den Schutzgesetzeigenschaft kapitalmarktrechtlicher Normen. Mit der Arbeit soll die Forschungsfrage beantwortet werden, inwieweit der Durchsetzungsmechanismus aus § 823 Abs. 2 BGB den Anforderungen des Kapitalmarktrechts gerecht werden und ein geeignetes Instrument für einen – vorschnell? – postulierten Paradigmenwechsel sein kann.
Entanglement witnesses with variable number of local measurements
Creators: name: Laskowski, Wieslaw
name: Markiewicz, Marcin
name: Paterek, Tomasz
name: Weinar, Ryszard
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a class of entanglement identifiers which has the following experimentally friendly feature: once the expectation value of the identifier exceeds some definite limit, we can conclude the state is entangled, even if not all measurements defining the identifier have been performed. These identifiers are in the form of sums of non-negative functions of correlations in a quantum state, mostly squares of correlations, and we illustrate their use and strengths on various examples.
description: 6 pages, 1 figure
Experiment mit einem dynamischen Umlegungsverfahren
Creators: name: Vrtic, Milenko
name: Axhausen, Kay W.
Publisher: name: ETH Zurich
Year: 2002
Subjects: subject: VERKEHRSMODELLE + VERKEHRSSIMULATION (VERKEHR UND TRANSPORT)
subject: STRASSENVERKEHRSPLANUNG (VERKEHR UND TRANSPORT)
subject: TRANSPORT MODELS + TRAFFIC SIMULATION (TRANSPORTATION AND TRAFFIC)
subject: ROAD TRANSPORT PLANNING (TRANSPORTATION AND TRAFFIC)
subject: info:eu-repo/classification/ddc/624
subject: info:eu-repo/classification/ddc/380
subject: Civil engineering
subject: FOS: Civil engineering
subject: Commerce, communications, transport

description: Arbeitsberichte Verkehrs- und Raumplanung, 138
Determination of the polynomial restoring force of a one DoF bistable Duffing oscillator by linear regression
Creators: name: Wulff, Paul
name: Lentz, Lukas
name: Von Wagner, Utz
Publisher: name: Springer Science and Business Media LLC
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::620 Ingenieurwissenschaften::620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: oscillator
subject: linear regression
subject: bistable magnetoelastic oscillator
subject: energy-harvesting systems
subject: high amplitude oscillations

description: A large class of energy-harvesting systems includes a bistable magnetoelastic oscillator. Due to the high complexity of the inherent magnetic field forces, those systems are commonly represented as a combination of physical and phenomenological, low-dimensional models. Therein occurring three free parameters of dissipation and restoring force are determined by the decay rate as well as constraints for the position of the equilibria and the frequency of small amplitude oscillations. As will be shown in this paper, one major disadvantage of this procedure is that high amplitude oscillations, which are most relevant in context of energy harvesting, yield the poorest consistency with experimental observations. To overcome the problem, a regression-based nonlinear system identification is performed using system responses under harmonic excitation. Models with cubic as well as quintic restoring forces are identified and compared with the experimental observations as well as a model that was built with the commonly used identification procedure. As a result, it is found that both models from the regression show a higher agreement with the experimental data. Furthermore, the quintic model is found to be more accurate than the cubic model. This shows the necessity to be able to include more than three free parameters in the model. The advantage of the applied procedure lies in the raised flexibility of model adaptation resulting in improved agreement of simulation and experimental results.
On the total mass of closed universes
Creators: name: Szabados, László B
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The total mass, the Witten type gauge conditions and the spectral properties of the Sen-Witten and the 3-surface twistor operators in closed universes are investigated. It has been proven that a recently suggested expression ${\tt M}$ for the total mass density of closed universes is vanishing if and only if the spacetime is flat with toroidal spatial topology; it coincides with the first eigenvalue of the Sen-Witten operator; and it is vanishing if and only if Witten's gauge condition admits a non-trivial solution. Here we generalize slightly the result above on the zero-mass configurations: ${\tt M}=0$ if and only if the spacetime is holonomically trivial with toroidal spatial topology. Also, we show that the multiplicity of the eigenvalues of the (square of the) Sen-Witten operator is at least two, and a potentially viable gauge condition is suggested. The monotonicity properties of ${\tt M}$ through the examples of closed Bianchi I and IX cosmological spacetimes are also discussed. A potential spectral characterization of these cosmological spacetimes, in terms of the spectrum of the Riemannian Dirac operator and the Sen-Witten and the 3-surface twistor operators, is also indicated.
description: 14 pages, plenary talk at the `Spanish Relativity Meeting in Portugal 2012', Guimar\~aes 3-7 September; Final version, appearing in General Relativity and Gravitation
Chydaeus bedeli
Creators: name: Kataev, Boris M.
name: Wrase, David W.
name: Schmidt, Joachim
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Chydaeus
Chydaeus bedeli

description: The bedeli species group
 Diagnosis. Body elongate, medium-sized, length above 9.0 mm. Elytra not fused along suture, with parascutellar strioles rather long and basal parascutellar setigerous pores present; preapical sinuations of elytra comparatively deep. Metepisterna markedly narrowed posteriad, longer than or approximately as long as wide. Tergite VII (last visible) of female dentiform at apex. Metacoxae each with an additional posterolateral setigerous pore. Median lobe of aedeagus sharply bent dorsad just at apex.
description: Published as part of Kataev, Boris M., Wrase, David W. & Schmidt, Joachim, 2014, New species of the genus Chydaeus from China, Nepal, Myanmar, and Thailand, with remarks on species previously described (Coleoptera: Carabidae: Harpalini), pp. 1-28 in Zootaxa 3765 (1) on page 2, DOI: 10.11646/zootaxa.3765.1.1, http://zenodo.org/record/285551
The Distance Coloring of Graphs
Creators: name: Miao, Lian-Ying
name: Fan, Yi-Zheng
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15, 05C50

description: Let $G$ be a connected graph with maximum degree $Δ\ge 3$. We investigate the upper bound for the chromatic number $χ_γ(G)$ of the power graph $G^γ$. It was proved that $χ_γ(G) \leΔ\frac{(Δ-1)^γ-1}{Δ-2}+1=:M+1$ with equality if and only $G$ is a Moore graph. If $G$ is not a Moore graph, and $G$ holds one of the following conditions: (1) $G$ is non-regular, (2) the girth $g(G) \le 2γ-1$, (3) $g(G) \ge 2γ+2$, and the connectivity $κ(G) \ge 3$ if $γ\ge 3$, $κ(G) \ge 4$ but $g(G) >6$ if $γ=2$, (4) $Δ$ is sufficiently large than a given number only depending on $γ$, then $χ_γ(G) \le M-1$. By means of the spectral radius $λ_1(G)$ of the adjacency matrix of $G$, it was shown that $χ_2(G) \le λ_1(G)^2+1$, with equality holds if and only if $G$ is a star or a Moore graph with diameter 2 and girth 5, and $χ_γ(G) < λ_1(G)^γ+1$ if $γ\ge 3$.
Euler systems for Rankin--Selberg convolutions of modular forms
Creators: name: Lei, Antonio
name: Loeffler, David
name: Zerbes, Sarah Livia
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F85, 11F67, 11G40, 14G35

description: We construct an Euler system in the cohomology of the tensor product of the Galois representations attached to two modular forms, using elements in the higher Chow groups of products of modular curves. We use this Euler system to prove a finiteness theorem for the strict Selmer group of the Galois representation when the associated p-adic Rankin--Selberg L-function is non-vanishing at s = 1.
description: Revised version with many updates and corrections
Interplay of anisotropies of momentum distribution and mean field in heavy-ion collisions
Creators: name: Simon, C. H.
name: Danielewicz, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Two important parametrizations of momentum-dependent nucleonic fields, proposed for the simulations of central heavy-ion collisions, one by Gale et al. and the other by Welke et al., suffer from practical limitations. The first gives rise to mean fields isotropic in momentum, even when underlying momentum distributions are anisotropic, making descriptions of early nonequilibrium stages of collisions unrealistic. The second parametrization gives rise to anisotropic mean fields, but is computationally expensive, because the mean field has to be computed separately for every location of a nucleon in phase space, through folding. Here we construct a parametrization of the nucleonic mean field that yields an anisotropic mean field for an anisotropic momentum distribution and is inexpensive computationally. To demonstrate the versatility of our parametrization, we take the case of results from the parametrization by Welke et al. and attempt to approximate them. In arriving at a suitable anisotropic mean-field potential, we draw, on one hand, from the idea behind the parametrization of Gale et al., of a separable expansion of the potential energy, and, on the other, from the idea of a parallel expansion of the energy and mean field in anisotropy. We show that using our novel parametrization we can qualitatively and partially quantitatively reproduce the features of the mean-field parametrization of Welke et al.. This opens up the possibility of exploring the effects of mean-field anisotropy in collisions, without the penalty of computational cost behind the folding parametrization.
description: 18 pages, 14 figures, expanded justification for the effort discussed in the paper, introduced other minor corrections
Classical percolation fingerprints in the high-temperature regime of the integer quantum Hall effect
Creators: name: Flöser, M.
name: Piot, B. A.
name: Campbell, C. L.
name: Maude, D. K.
name: Henini, M.
name: Airey, R.
name: Wasilewski, Z. R.
name: Florens, S.
name: Champel, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have performed magnetotransport experiments in the high-temperature regime (up to 50 K) of the integer quantum Hall effect for two-dimensional electron gases in semiconducting heterostructures. While the magnetic field dependence of the classical Hall law presents no anomaly at high temperatures, we find a breakdown of the Drude-Lorentz law for the longitudinal conductance beyond a crossover magnetic field B_c ~ 1 T, which turns out to be correlated with the onset of the integer quantum Hall effect at low temperatures. We show that the high magnetic field regime at B > B_c can be understood in terms of classical percolative transport in a smooth disordered potential. From the temperature dependence of the peak longitudinal conductance, we extract scaling exponents which are in good agreement with the theoretically expected values. We also prove that inelastic scattering on phonons is responsible for dissipation in a wide temperature range going from 1 to 50 K at high magnetic fields.
description: 14 pages + 8 Figures
title: Μεθοδολογίες παραμόρφωσης και τροποποίησης μη δομημένων υβριδικών υπολογιστικών πλεγμάτων
Creators: name: Κουσκουρής Πολυζώης Ε.
Publisher: name: Technical University of Crete
Year: 2011

description: Μη διαθέσιμο
Maren Saiko: Cura dabit faciem. Kosmetik im Altertum - literarische, kulturhistorische und medizinische Aspekte
Creators: name: Lütke Börding, Cornelia
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Maren Saiko: Cura dabit faciem. Kosmetik im Altertum - literarische, kulturhistorische und medizinische Aspekte. Trier: Wissenschaftlicher Verlag Trier 2005, 392 Seiten, (ISBN 3-88476-756-9)
description: Forum Classicum, Nr. 4 (2005): Forum Classicum