cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spatial Fuzzy C Means PET Image Segmentation of Neurodegenerative Disorder
Creators: name: Meena, A.
name: Raja, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Nuclear image has emerged as a promising research work in medical field. Images from different modality meet its own challenge. Positron Emission Tomography (PET) image may help to precisely localize disease to assist in planning the right treatment for each case and saving valuable time. In this paper, a novel approach of Spatial Fuzzy C Means (PET SFCM) clustering algorithm is introduced on PET scan image datasets. The proposed algorithm is incorporated the spatial neighborhood information with traditional FCM and updating the objective function of each cluster. This algorithm is implemented and tested on huge data collection of patients with brain neuro degenerative disorder such as Alzheimers disease. It has demonstrated its effectiveness by testing it for real world patient data sets. Experimental results are compared with conventional FCM and K Means clustering algorithm. The performance of the PET SFCM provides satisfactory results compared with other two algorithms
Statisztikát és információelméletet integráló mértéket alkalmazó dinamikus algoritmus mesterséges neurális hálózat tanítására - TDK dolgozat
Creators: name: , Szűcs
Publisher: name: Zenodo
Year: 2022
Subjects: Statisztika, Információelméletet, mérték, mesterséges neurális hálózat, tanítás

description: A Mesterséges Intelligencia és az Adattudomány széles körben elterjed módszerei között
 tartják számon a mesterséges neurális hálózatok használatát.
 Ezen modell felépítésének fontos kulcseleme a hálózat súlyainak tanítása, beállítása algoritmikus
 módszerekkel. Jelen TDK dolgozat egy új tanítómérték és egy új algoritmus részletes
 elemzését t˝uzi ki célul. Ez a módszer a tanítás, mint optimalizálási problémának a megoldására
 a Levenberg-Marquardt (LM) algoritmust használja egy fontos újítással módosítva. A hiba,
 eltérés méréséreaz adattudományban elterjedten használt (átlagos) négyzetes hiba (MSE) helyett
 a kutatás Silva et al. (2008) által bemutatott integrált exponenciális hiba továbbfejlesztett
 változatát, az újonnan bevezetett abszolútértékes exponenciális hibát alkalmazza, valamint az
 LM elgoritmust is kiegészíti új elemekkel.
 Ez a többszörösen továbbfejlesztett algoritmus nagyszámú benchmark adathalmazon került
 tesztelésre. A dolgozat ennek a tesztelésnek több f˝o szempontjai szerint, mint pontosság,
 sebesség, stabilitás kiértékelését mutatja be, ezeken kívül beszámol a témához kapcsolódó
 releváns tudományos irodalomban fellelhet˝o state-of-the-art eredményhez képest elért jobb
 algoritmikus teljesítményr˝ol is.
 (A szerz˝o az alapötlet korábbi változatát és más aspektusait BSc szakdolgozatában (Sz˝ucs
 (2020)) és korábbi TDK (Sz˝ucs (2021)) dolgozatában is vizsgálta.)
Exponential spreading and singular behavior of quantum dynamics near hyperbolic points
Creators: name: Iomin, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Quantum dynamics of a particle in the vicinity of a hyperbolic point is considered. Expectation values of dynamical variables are calculated, and the singular behavior is analyzed. Exponentially fast extension of quantum dynamics is obtained, and conditions for this realization are analyzed.
A new tool for precise radial velocity measurements
Creators: name: Vítková Michaela
name: Köhler Jana
name: Zechmeister Mathias
name: Skarka Marek
Publisher: name: Zenodo
Year: 2023

description: One of the most cost-effective, accurate, and cheap methods for radial velocity measurements is the usage of the gas absorption cell (e.g., Iodine cell) method. We present new open-access software for processing spectra obtained with gas cells, the python-based program Viper (Velocity and IP EstimatoR), and recent results obtained with it. It can be used for data obtained with gas cell from multiple instruments (e.g., OES, TCES, CRIRES+) and new can be easily added. When this method was tested on Ondřejov Echelle Spectrograph data, the achieved rms improved 6 times compared to a classic cross-correlation method. Viper is still under development. One of the new features we are currently working on is employing telluric lines that allow us to use Viper for the analysis without a gas cell.
Dynamics of the Chemical Master Equation, a strip of chains of equations in d-dimensional space
Creators: name: Galstyan, Vahe
name: Saakian, David B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the multi-chain version of the Chemical Master Equation, when there are transitions between different states inside the long chains, as well as transitions between (a few) different chains. In the discrete version, such a model can describe the connected diffusion processes with jumps between different types. We apply the Hamilton-Jacobi equation to solve some aspects of the model. We derive exact {(in the limit of infinite number of particles)} results for the dynamic of the maximum of the distribution and the variance of distribution.
description: 9 pages
Muonium annihilation into $ν_e\barν_μ$ and $ν_e\barν_μγ$
Creators: name: Shkerin, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate in detail the annihilation of Muonium into two-neutrino final state and two-neutrino and a photon state.
description: 5 pages, 1 figure
Pain Patterns and Well-Being in Children and Adolescents with Cerebral Palsy
Creators: name: Dr.Tshetiz Dahal (MBBS)
Publisher: name: Zenodo
Year: 2022
Subjects: Cerebral Palsy; physical and psychological well-being

description: Abstract:
 Aim: To identify 5-week pain intensity trajectories and their relationship to physical and psychological wellbeing in children and young people with cerebral palsy (CP). Methods: A research study was undertaken with 101 Indian children and young people with CP, 49 of them were female. Their ages ranged from 8 to 18 years, with an overall mean age of 12 years and 11 months (SD, 3 years and 1 month). Physical and mental health (KIDSCREEN-27) were measured at baseline and after 5 weeks, as well as self-reported pain intensity (Faces Pain Scale – Revised). Latent class growth and generic linear models were used in statistical analysis. Results: All levels of the Gross Motor Function Classification System (I = 40.6%, II = 15.8 %, III = 20.8 %, IV = 13.9 %, and V = 8.9 %) were represented. There were found to be five pain intensity trajectories. Three trajectories showed mean steady pain that was either extremely low (35.4%), low (32.4%), or high (4.9%). Two trajectories saw moderate pain that changed (16.8%) and severe pain that decreased to moderate levels (10.5%), respectively. The lowest physical well-being was reported by the individuals with stable high pain (adjusted = 10.01; 95 percent confidence interval [CI] = -19.37 to -0.66). The lowest psychological well-being was found in those in the three trajectories with the highest mean baseline pain intensity (>3 out of 10) (adjusted = β-8.27, 95% CI = -14.84 to 1.70; = -6.74, 95% CI = -12.43 to -1.05; β = -5.82, 95% CI = -15.34 to 3.71) Conclusion: The pain intensity trajectories of nearly one-third of subjects were moderate to severe. Lower physical and psychological well-being was linked to membership in the trajectories of greater pain intensity. Images:
description: PUBLISHED IN IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) e-ISSN: 2279-0853, p-ISSN: 2279-0861.Volume 21, Issue 6 Ser.9 (June. 2022), PP 45-54 Selected to be presented at the International Live Conference on Cerebral Palsy
Study of $B_{s}$ ${\to}$ $η_{c}(J/ψ)D$ decay with perturbative QCD approach
Creators: name: Sun, Junfeng
name: Xiong, Zhengjun
name: Yang, Yueling
name: Lu, Gongru
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The $W$-exchange process $B_{s}$ ${\to}$ $η_{c}(J/ψ)D$ is studied with the perturbative QCD approach. Three kinds of wave functions for $B_{s}$ meson and two forms of wave functions for charmonium are considered. It is estimated that branching ratios for $B_{s}$ ${\to}$ $η_{c}\bar{D}$, $η_{c}D$, $J/ψ\bar{D}$, $J/ψD$ decays are the order of $10^{-7}$, $10^{-8}$, $10^{-8}$, $10^{-9}$, respectively, where the largest uncertainty is from wave functions. There is a possibility for measuring these decay in the near future.
description: 17 pages, revtex4, accepted by EPJC
Validation report which details the advanced models developed to describe a) static and continuous and b) dynamic force transfer standards taking into account sensitivity stability, temperature and other parasitic influences on the measurement uncertainty (target uncertainty is 1 % up to 100 Hz and 2 % between 100 - 1000 Hz)
Creators: name: Sander, J.
name: Mirian, D.
name: Frank, H.
name: Hassan, S.
name: Kumme, R.
name: Prato, A.
name: Germak, A.
name: Wozniak, M.
name: Izquierdo, G.
name: Carmen, M.
name: Vavrecka, L.
name: Dizdar, H.
name: Aydemir, B.
name: Korhonen, J.
name: Oliveira, R. S.
name: Hiti, M.
Publisher: name: Zenodo
Year: 2023
Subjects: static forces
continuous forces
dynamic forces
damping
stiffness
sensitivity stability
amplifier
calibration certificate
force transfer standards
parasitic components
measurement uncertainty
creep
force transducer
rock motion
kelvin-voigt model
artificial intelligence

description: Current document reports on the development and validation of advanced practical models for describing force measuring devices used for the measurement of static, continuous forces in part A as well as dynamic forces in part B of the report. In the force measurement applications, the sensitivity curve of the force measuring devices determined in the calibration gives the traceability to national standards. The measurement uncertainty in an application is mainly affected by the sensitivity stability, the influence of temperature and other parasitic components. To capture these effects an advanced model for static and continuous forces was developed in part A which describes these influences especially in respect of their contribution to the measurement uncertainty. In contrast to the static calibration procedure, the dynamic calibration of the sensor has been always challenging because of several reasons such as the sophisticated nature of dynamic measurement, insufficient structural equipment, and parasitic effects which yield higher measurement uncertainty in comparison to static measurements and therefore inappropriate characterization of the force transducers. To close this knowledge gap in the dynamic calibration, the advanced model for dynamic forces was developed in part B. To consider the dynamic properties of force measuring devices the frequency dependency of the sensitivity and the influence of parasitic influences from temperature of the force measuring devices was considered and described. The target uncertainty is 1 % for up to 100 Hz and the target uncertainty is 2 % for higher frequency range from 100 Hz up to 1000 Hz.
description: The ComTraForce project 18SIB08 has received funding from the European Metrology Programme for Innovation and Research (EMPIR) as well as the European Association of National Metrology Institutes (Euramet).
CYCLOPS2: the fibre image slicer upgrade for the UCLES high resolution spectrograph
Creators: name: Horton, Anthony
name: Tinney, C. G.
name: Case, Scott
name: Farrell, Tony
name: Gers, Luke
name: Jones, Damien
name: Lawrence, Jon
name: Miziarski, Stan
name: Staszak, Nick
name: Orr, David
name: Vuong, Minh
name: Waller, Lew
name: Zhelem, Ross
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: CYCLOPS2 is an upgrade for the UCLES high resolution spectrograph on the Anglo-Australian Telescope, scheduled for commissioning in semester 2012A. By replacing the 5 mirror Coudé train with a Cassegrain mounted fibre-based image slicer CYCLOPS2 simultaneously provides improved throughput, reduced aperture losses and increased spectral resolution. Sixteen optical fibres collect light from a 5.0 arcsecond^2 area of sky and reformat it into the equivalent of a 0.6 arcsecond wide slit, delivering a spectral resolution of R = 70000 and up to twice as much flux as the standard 1 arcsecond slit of the Coudé train. CYCLOPS2 also adds support for simultaneous ThAr wavelength calibration via a dedicated fibre. CYCLOPS2 consists of three main components, the fore-optics unit, fibre bundle and slit unit. The fore optics unit incorporates magnification optics and a lenslet array and is designed to mount to the CURE Cassegrain instrument interface, which provides acquisition, guiding and calibration facilities. The fibre bundle transports the light from the Cassegrain focus to the UCLES spectrograph at Coudé and also includes a fibre mode scrambler. The slit unit consists of the fibre slit and relay optics to project an image of the slit onto the entrance aperture of the UCLES spectrograph. CYCLOPS2 builds on experience with the first generation CYCLOPS fibre system, which we also describe in this paper. We present the science case for an image slicing fibre feed for echelle spectroscopy and describe the design of CYCLOPS and CYCLOPS2.
description: 9 pages, 6 figures, published in Proc. SPIE 8446
Search for pulsed gamma-ray emission from globular cluster M28
Creators: name: Wu, J. H. K.
name: Hui, C. Y.
name: Wu, E. M. H.
name: Kong, A. K. H.
name: Huang, R. H. H.
name: Tam, P. H. T.
name: Takata, J.
name: Cheng, K. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Using the data from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope, we have searched for the gamma-ray pulsations from the direction of globular cluster M28 (NGC 6626). We report the discovery of a signal with the frequency consistent with that of the energetic millisecond pulsar (MSP) PSR B1821-24 in M28. A weighted H-test test statisic (TS) of 28.8 is attained which corresponds to a chance probability of ~1e-5 (4.3-sigma detection). With a phase-resolved analysis, the pulsed component is found to contribute ~25% of the total observed gamma-ray emission from the cluster. On the other hand, the unpulsed level provides a constraint for the underlying MSP population and the fundamental plane relations for the scenario of inverse Compton scattering. Follow-up timing observations in radio/X-ray are encouraged for further investigating this periodic signal candidate.
description: 8 pages, 2 figures, 2 tables, accepted for publication in ApJ Letter
GRAPHENE-BASED SURFACE PLASMON POLARITON FOR PLASMONIC WAVEGUIDES AND DEVICES
Creators: name: Nunneh, Bill N.
Publisher: name: Zenodo
Year: 2022

description: ABSTRACT: Presentation slides for the course project on the topic Graphene-based surface plasmon polariton for plasmonic waveguides and devices. Throughout the project the used of FDTD simulations were conducted for the report.
title: Geschickt aufgefädelt. Die Kreuzblume auf dem Vierungsturm des ehemaligen Zisterzienserklosters Bebenhausen
Creators: name: Kayser, Christian
name: Tutsch, Joram
Publisher: name: University Library Heidelberg
Year: 2015

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 44, Nr. 2 (2015), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Driving three atoms into a singlet state in an optical cavity via adiabatic passage of a dark state
Creators: name: Lu, Mei
name: Xia, Yan
name: Song, Jie
name: Song, He-Shan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we propose an efficient scheme to drive three atoms in an optical cavity into a singlet state via adiabatic passage. Appropriate Rabi frequencies of the classical fields are selected to realize the present scheme. The scheme is robust against deviations in the pulse delay and laser intensity through some simple analysis of the adiabatic condition. It is notable that the estimated range of the effective adiabaticity condition coincides with the numerical results. When taking dissipation into account, we show that the process is immune to atomic spontaneous emission as the atomic excited states are never populated in adiabatic evolution. Moreover, under certain conditions, the cavity decay can also be efficiently suppressed.
Dynamical twisting and the b ghost in the pure spinor formalism
Creators: name: Berkovits, Nathan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: After adding an RNS-like fermionic vector ψ^m to the pure spinor formalism, the non-minimal b ghost takes a simple form similar to the pure spinor BRST operator. The N=2 superconformal field theory generated by the b ghost and the BRST current can be interpreted as a "dynamical twisting" of the RNS formalism where the choice of which spin half ψ^m variables are twisted into spin 0 and spin 1 variables is determined by the pure spinor variables that parameterize the coset SO(10)/U(5).
description: 12 pages harvmac
Revealing the heavily obscured AGN population of High Redshift 3CRR Sources with Chandra X-ray Observations
Creators: name: Wilkes, Belinda J.
name: Kuraszkiewicz, Joanna
name: Haas, Martin
name: Barthel, Peter
name: Leipski, Christian
name: Willner, S. P.
name: Worrall, D. M.
name: Birkinshaw, Mark
name: Antonucci, Robert
name: Ashby, M. L. N.
name: Chini, Rolf
name: Fazio, G. G.
name: Lawrence, Charles
name: Ogle, Patrick
name: Schulz, Bernhard
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Chandra observations of a complete, flux-limited sample of 38 high-redshift (10) indicating obscuration (log N_H ~ 22-24 cm^-2). These properties and the correlation between obscuration and radio core-fraction are consistent with orientation-dependent obscuration as in Unification models. About half the NLRGs have soft X-ray hardness ratios and/or high [OIII] emission line to X-ray luminosity ratio suggesting obscuration by Compton thick (CT) material so that scattered nuclear or extended X-ray emission dominates (as in NGC1068). The ratios of unobscured to Compton-thin (10^{22}< N_H(int) < 1.5 x 10^{24} cm^-2) to CT (N_H(int) > 1.5 x 10^{24} cm^-2) is 2.5:1.4:1 in this high luminosity, radio-selected sample. The obscured fraction is 0.5, higher than is typically reported for AGN at comparable luminosities from multi-wavelength surveys (0.1-0.3). Assuming random nuclear orientation, the unobscured half-opening angle of the disk/wind/torus structure is ~ 60deg and the obscuring material covers 30deg of which ~ 12deg is Compton thick. The multi-wavelength properties reveal that many NLRGs have intrinsic absorption 10-1000x higher than indicated by their X-ray hardness ratios, and their true L_X values are ~10--100x larger than the hardness-ratio absorption corrections would indicate.
description: 42 pages, 11 figures, 3 tables; ApJ, in press
Impact of Resonant Magnetic Perturbations on Zonal Modes, Drift-Wave Turbulence and the L-H Transition Threshold
Creators: name: Leconte, M.
name: Diamond, P. H.
name: Xu, Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We study the effects of Resonant Magnetic Perturbations (RMPs) on turbulence, flows and confinement in the framework of resistive drift-wave turbulence. This work was motivated, in parts, by experiments reported at the IAEA 2010 conference [Y. Xu {\it et al}, Nucl. Fusion \textbf{51}, 062030] which showed a decrease of long-range correlations during the application of RMPs. We derive and apply a zero-dimensional predator-prey model coupling the Drift-Wave Zonal Mode system [M. Leconte and P.H. Diamond, Phys. Plasmas \textbf{19}, 055903] to the evolution of mean quantities. This model has both density gradient drive and RMP amplitude as control parameters and predicts a novel type of transport bifurcation in the presence of RMPs. This model allows a description of the full L-H transition evolution with RMPs, including the mean sheared flow evolution. The key results are: i) The L-I and I-H power thresholds \emph{both} increase with RMP amplitude $|\bx|$, the relative increase of the L-I threshold scales as $ΔP_{\rm LI} \propto |\bx|^2 ν_*^{-2} \gyro^{-2}$, where $ν_*$ is edge collisionality and $\gyro$ is the sound gyroradius. ii) RMPs are predicted to \emph{decrease} the hysteresis between the forward and back-transition. iii) Taking into account the mean density evolution, the density profile - sustained by the particle source - has an increased turbulent diffusion compared with the reference case without RMPs which provides one possible explanation for the \emph{density pump-out} effect.
description: 30 pages, IAEA-based article
Open Access logo cookie cutter: 3D model
Creators: name: Skelly, Lance
name: Rusu, Cristina
Publisher: name: Loughborough University
Year: 2022
Subjects: Uncategorized

description: Files to print a 3D cookie cutter of the Open Access logo. Created for Loughborough University, under commission.
 Image of baked cookies by Cristina Rusu. Shared with permission.
Multiscaling in Hall-Magnetohydrodynamic Turbulence: Insights from a Shell Model
Creators: name: Banerjee, Debarghya
name: Ray, Samriddhi Sankar
name: Sahoo, Ganapati
name: Pandit, Rahul
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We show that a shell-model version of the three-dimensional Hall-magnetohydrodynamic (3D Hall-MHD) equations provides a natural theoretical model for investigating the multiscaling behaviors of velocity and magnetic structure functions. We carry out extensive numerical studies of this shell model, obtain the scaling exponents for its structure functions, in both the low-$k$ and high-$k$ power-law ranges of 3D Hall-MHD, and find that the extended-self-similarity (ESS) procedure is helpful in extracting the multiscaling nature of structure functions in the high-$k$ regime, which otherwise appears to display simple scaling. Our results shed light on intriguing solar-wind measurements.
description: 7 pages, 6 figures
Black tunnels and hammocks
Creators: name: Biggs, WD
name: Santos, JE
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Regular Article - Theoretical Physics
AdS-CFT Correspondence
Black Holes
Gauge-Gravity Correspondence

description: Abstract We construct the holographic duals to a large N, strongly coupled $$ \mathcal{N} $$ N = 4 super Yang-Mills conformal field theory defined on a four-dimensional de Sitter-Schwarzschild background. There are two distinct five-dimensional bulk solutions. One, named the black tunnel, is static and possesses two disconnected horizons. The other, the black hammock, contains only one horizon in the bulk. The hammock horizon is not a Killing horizon, and hence possesses interesting properties, such as non-vanishing expansion and shear, as well as allowing classical flow along it. The DeTurck method was used in order to attain the black tunnel solutions, whilst the black hammocks were found in Bondi-Sachs gauge.
title: Jörn Staecker: Rex regum et dominus dominorum. Die wikingerzeitlichen Kreuz- und Kruzifixanhänger als Ausdruck der Mission in Altdänemark und Schweden. Lund Studies in Medieval Archaeology 23. Stockholm 1999
Creators: name: Morawski, Detlef
Publisher: name: University Library Heidelberg
Year: 2015

description: Rezension zu: Jörn Staecker: Rex regum et dominus dominorum. Die wikingerzeitlichen Kreuz- und Kruzifixanhänger als Ausdruck der Mission in Altdänemark und Schweden. Lund Studies in Medieval Archaeology 23. Almqvist & Wiksell International. Stockholm 1999. 621 Seiten. ISBN 9-22-01836-0.
SymFET: A Proposed Symmetric Graphene Tunneling Field Effect Transistor
Creators: name: Zhao, Pei
name: Feenstra, Randall M.
name: Gu, Gong
name: Jena, Debdeep
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work, an analytical model to calculate the channel potential and current-voltage characteristics in a Symmetric tunneling Field-Effect-Transistor (SymFET) is presented. The current in a SymFET flows by tunneling from an n-type graphene layer to a p-type graphene layer. A large current peak occurs when the Dirac points are aligned at a particular drain-to- source bias VDS . Our model shows that the current of the SymFET is very weakly dependent on temperature. The resonant current peak is controlled by chemical doping and applied gate bias. The on/off ratio increases with graphene coherence length and doping. The symmetric resonant peak is a good candidate for high-speed analog applications, and can enable digital logic similar to the BiSFET. Our analytical model also offers the benefit of permitting simple analysis of features such as the full-width-at-half-maximum (FWHM) of the resonant peak and higher order harmonics of the nonlinear current. The SymFET takes advantage of the perfect symmetry of the bandstructure of 2D graphene, a feature that is not present in conventional semiconductors.
Sub-parsec radio cores in nearby Seyfert galaxies
Creators: name: Panessa, Francesca
name: Giroletti, Marcello
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a census of sub-pc scale properties of the VLBI cores in a complete sample of local Seyfert galaxies. Seventeen out of 23 sources with a VLA detection are detected also with VLBI at 1.7 GHz and/or 5 GHz, with an average monochromatic radio luminosity log [P (5\, GHz) W Hz^{-1} = 19.4. Radio cores are of heterogeneous nature, the majority of them showing elongated structures or accompanied by extra components, broad ranges of brightness temperatures (10^{5}-10^{10} K) and spectral indices (from steep to highly inverted). Interestingly, the detection rate (26%) of water maser emission is considerably higher than that found in previous surveys (around 10%), suggesting that distance biases could significantly affect our knowledge of the actual occurrence of this phenomenon. The VLBI observational properties of type 1 and type 2 nuclei are similar except for the T_{B}, which is on average higher in type 1. These results suggest that both thermal and non-thermal emission are common in low luminosity AGN, with a prevalence of free-free processes among type 2 cores, likely associated to molecular gas. Though limited by the low number statistics, we find no significant correlation between the VLBI radio luminosity and the nuclear X-ray luminosity, the latter appears to be more connected to the tens of pc scales VLA radio emission, rather than to the sub-pc scales, particularly in the most X-ray luminous sources. The X-ray radio-loudness parameter R_{X} = L (6cm)/L(2-10 keV), is on average very low (< log R_X > = -4.8), with comparatively higher R_{X} found for sources with the largest black hole masses and the lowest Eddington ratios, although the radio power does not appear to depend on the accretion rate.
description: 7 pages, 3 figures, 2 tables, accepted for publication in MNRAS
title: Βιβλίο: Οι αναμνήσεις της ανθρωπότητας (Γέννηση και εξέλιξη στο πέρασμα των αιώνων)
title: Book: The memories of humanity (Birth and evolution over the centuries)
titleType: AlternativeTitle
Creators: name: Σιδερή, Δήμητρα
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Βιβλίο
Πολιτισμός
Εκπαίδευση
Αρχαιότητα
Υλικά γραφής
Τυπογραφία
Συντήρηση χαρτιού
Ψηφιακή βιβλιοθήκη

description: Το βιβλίο στον πολιτισμό της ζωής του ανθρώπου είναι από τις σημαντικότερες εκδηλώσεις. Η παρούσα εργασία σκοπό έχει να αναδείξει την συμβολή του βιβλίου στην εκπαίδευση και στην παιδεία των λαών από την αρχαιότητα μέχρι και σήμερα. Από τους Φοίνικες αρχικά τον 12ο αιώνα και στη συνέχεια τους Έλληνες τον 9ο αιώνα έχουμε το αλφάβητο. Έχουμε λοιπόν τις πρώτες επιγραφές και την αρχική μορφή των βιβλίων με φύλλα μετάλλου, ξύλου ή φλαμουριάς. Το βιβλίο ρόλος και ο κώδικας είναι οι σημαντικότερες μορφές βιβλίου, που λειτούργησαν όμως ανταγωνιστικά μεταξύ τους. Σπουδαίο ρόλο στην διάδοση του βιβλίου έπαιξαν οι αντιγραφείς, ίδιοι ή κατ΄ ανάθεση ανάλογα με τις προσωπικές επιδιώξεις. Θα αναφερθούν οι κλοπές, οι καταστροφές όπως και το βιβλίο ως δώρο στην αρχαιότητα. Πλεονεκτήματα και πιθανά μειονεκτήματα του βιβλίου. Η σημαντική θέση των Βιβλιοθηκών, η αρχιτεκτονική των χώρων, η λειτουργία και η διοίκηση τους. Η ανάπτυξη της Τεχνολογίας που έφερε το e-book. H αποδοχή από τους αναγνώστες, τα πλεονεκτήματα και τα μειονεκτήματα είναι επίσης μέρος της έρευνας.
Harmonics suppression effect of the quasi-periodic undulator in SASE free-electron-laser
Creators: name: Wu, Ai-Lin
name: Jia, Qi-Ka
name: Li, He-Ting
Publisher: name: arXiv
Year: 2013
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this paper, the harmonics suppression effect of QPUs in SASE FEL is investigated. The numerical results show that the harmonics power is reduced by using QPUs, but the fundamental radiation power also has a pronounced decrease as the saturation length gets very long. The cases of employing QPUs as parts of undulators are studied. The calculations show that if the fraction of QPUs and their offgap are appropriate in an undulator system, the harmonics radiation could be suppressed remarkably, meanwhile the fundamental saturation length does not increase too much.
Multispacecraft Analysis of the Properties of Magnetohydrodynamic Fluctuations in Sub-Alfvénic Solar Wind Turbulence at 1 au
Creators: name: Zhao, Siqi
name: Yan, Huirong
name: Liu, Terry Z.
name: Liu, Mingzhe
name: Wang, Huizi
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022
Subjects: subject: 520

description: We present three-dimensional magnetic power spectra in wavevector space to investigate anisotropy and scalings of sub-Alfv\'enic solar wind turbulence at magnetohydrodynamic (MHD) scale using the Magnetospheric Multiscale spacecraft. The magnetic power distributions are organized in a new coordinate determined by wavevectors (k) and background magnetic field ($b_0$) in Fourier space. This study utilizes two approaches to determine wavevectors: singular value decomposition method and timing analysis. The combination of both methods allows an examination of magnetic field properties in terms of mode compositions without spatiotemporal hypothesis. Observations show that fluctuations ($\delta B_{\perp1}$) in the direction perpendicular to k and $b_0$ prominently cascade perpendicular to $b_0$, and such anisotropy increases with wavenumber. The reduced power spectra of $\delta B_{\perp1}$ follow Goldreich-Sridhar scalings: $P(k_\perp)\sim k_\perp^{-5/3}$ and $P(k_{||}) \sim k_{||}^{-2}$. In contrast, fluctuations within $kb_0$ plane show isotropic behaviors: perpendicular power distributions are approximately the same as parallel distributions. The reduced power spectra of fluctuations within $kb_0$ plane follow the scalings: $P(k_\perp)\sim k_\perp^{-3/2}$ and $P(k_{||})\sim k_{||}^{-3/2}$. Comparing frequency-wavevector spectra with theoretical dispersion relations of MHD modes, we find that $\delta B_{\perp1}$ are probably associated with Alfven modes. For Alfvenic components, the ratio of cascading rate to the wave frequency is found to be around a factor of one, fully consistent with critical balance in the strong turbulence regime. The magnetic field fluctuations within $kb_0$ plane more likely originate from fast modes based on isotropic behaviors. The anisotropy and scalings of different magnetic field components are consistent with predictions of the current compressible MHD theory.
Design of step-graded AlGaN buffers for GaN-on-Si heterostructures grown by MOCVD
Creators: name: Ghosh, Saptarsi
name: Hinz, Alexander M
name: Frentrup, Martin
name: Alam, Saiful
name: Wallis, David J
name: Oliver, Rachel A
Publisher: name: Apollo - University of Cambridge Repository
Year: 2023
Subjects: Paper
GaN-on-Si
AlGaN buffer
MOCVD
heteroepitaxy

description: Funder: Deutsche Forschungsgemeinschaft; doi: http://dx.doi.org/10.13039/501100001659
description: Abstract For the growth of low-defect crack-free GaN heterostructures on large-area silicon substrates, compositional grading of AlGaN is a widely adapted buffer technique to restrict the propagation of lattice-mismatch induced defects and balance the thermal expansion mismatch-induced tensile stress. So far, a consolidation of the design strategy of such step-graded buffers has been impaired by the incomplete understanding of the effect of individual buffer design parameters on the mechanical and microstructural properties of the epilayers. Herein, we have analyzed a series of metal-organic chemical vapor deposition grown GaN/graded-AlGaN/AlN/Si heterostructures through in situ curvature measurements and post-growth x-ray diffraction (XRD). Our results reveal that in such epi structures, the GaN layer itself induces more compressive stress than the AlGaN buffer, but the underlying AlGaN layers dictate the magnitude of this stress. Furthermore, for a fixed AlGaN buffer thickness, the mean-stress accumulated during the GaN growth is found to be correlated with its structural properties. Specifically, one µm thick GaN layers that acquire 1.50 GPa or higher compressive mean-stress are seen to possess 20 2 ˉ 1 XRD ω-FWHM values less than 650 arc-sec. Also, the evolution of instantaneous stresses during the growth of the AlGaN layers is found to be a valuable indicator for buffer optimization, and composition difference between successive layers is established as a crucial criterion. The results also show that increasing the total buffer thickness (for a fixed number of steps) or increasing the number of steps (for a fixed total buffer thickness) may not always be beneficial. Irrespective of the buffer thickness, optimized high electron mobility transistor structures show similarly low sheet-resistance (∼350 Ω □)−1 and high mobility (∼2000 cm2 V−1 s −1) at room temperature.
Exploring Online Depression Forums via Text Mining: A Comparison of Reddit and a Curated Online Forum
Creators: name: Moßburger, Luis
name: Wende, Felix
name: Brinkmann, Kay
name: Schmidt, Thomas
Publisher: name: Universität Regensburg
Year: 2020
Subjects: subject: Health Language Processing, Social Media, Reddit, Topic Modeling, Sentiment Analysis
subject: 004 Informatik
subject: 150 Psychologie
subject: 400 Sprachwissenschaft, Linguistik
subject: 420 Englisch

description: We present a study employing various techniques of text mining to explore and compare two different online forums focusing on depression: (1) the subreddit r/depression (over 60 million tokens), a large, open social media platform and (2) Beyond Blue (almost 5 million tokens), a professionally curated and moderated depression forum from Australia. We are interested in how the language and the content on these platforms differ from each other. We scrape both forums for a specific period. Next to general methods of computational text analysis, we focus on sentiment analysis, topic modeling and the distribution of word categories to analyze these forums. Our results indicate that Beyond Blue is generally more positive and that the users are more supportive to each other. Topic modeling shows that Beyond Blue's users talk more about adult topics like finance and work while topics shaped by school or college terms are more prevalent on r/depression. Based on our findings we hypothesize that the professional curation and moderation of a depression forum is beneficial for the discussion in it.
Ανάπτυξη υπολογιστικής σκέψης με χρήση της τεχνητής νοημοσύνης στη δευτεροβάθμια εκπαίδευση
Creators: name: Μπισμπίκη, Βασιλίνα
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Υπολογιστική σκέψη
subject: Τεχνητή νοημοσύνη
subject: Δευτεροβάθμια εκπαίδευση
subject: Υπολογιστικός γραμματισμός
subject: ΤΠΕ

description: Η υπολογιστική σκέψη είναι μια διαδικασία επίλυσης προβλημάτων που περιλαμβάνει μια σειρά από χαρακτηριστικά, όπως λογικό συλλογισμό, αφαίρεση και αποσύνθεση. Είναι μια διαδικασία που μπορεί να εφαρμοστεί σε οποιοδήποτε πρόβλημα, όχι μόνο σε αυτά που αφορούν υπολογιστές. Η τεχνητή νοημοσύνη είναι η εφαρμογή της υπολογιστικής σκέψης για τη δημιουργία ευφυών μηχανών. Ο τρόπος με τον οποίο συντίθενται τα συστήματα τεχνητής νοημοσύνης, μιμείται τα στοιχεία της υπολογιστικής σκέψης. Για το λόγο αυτό θα μπορούσε να αποτελέσει σημαντικό εργαλείο στην διδασκαλία με σκοπό την ανάπτυξη της υπολογιστικής σκέψης. Τα τελευταία χρόνια, έχει γίνει πολλή συζήτηση για την τεχνητή νοημοσύνη (AI) και τις πιθανές επιπτώσεις της σε διάφορους κλάδους. Ένας τομέας που έχει λάβει λιγότερη προσοχή, ωστόσο, είναι ο πιθανός αντίκτυπος της τεχνητής νοημοσύνης στη δευτεροβάθμια εκπαίδευση. Η εισαγωγή της στην εκπαίδευση εντάσσεται στην εισαγωγή των ΤΠΕ στην εκπαίδευση σαν ένα μέρος αυτών. Υπάρχουν διάφοροι τρόποι με τους οποίους η τεχνητή νοημοσύνη θα μπορούσε ενδεχομένως να μεταμορφώσει τη δευτεροβάθμια εκπαίδευση. Για παράδειγμα, συστήματα διδασκαλίας βασισμένα σε τεχνητή νοημοσύνη θα μπορούσαν να χρησιμοποιηθούν για την παροχή εξατομικευμένης διδασκαλίας στους μαθητές. Η τεχνητή νοημοσύνη θα μπορούσε επίσης να χρησιμοποιηθεί για τη δημιουργία πιο εξατομικευμένων μαθησιακών εμπειριών, με βάση τα δυνατά και τα αδύνατα σημεία κάθε μαθητή. Επιπλέον, η χρήση της τεχνητής νοημοσύνης στην εκπαίδευση μπορεί να βοηθήσει τους μαθητές να μάθουν με τον δικό τους ρυθμό και να προσαρμόσουν τη μάθησή τους στις ατομικές τους ανάγκες. Η δευτεροβάθμια εκπαίδευση είναι η διαδικασία προετοιμασίας των νέων για τη μετάβαση από την παιδική ηλικία στην ενήλικη ζωή. Συχνά, η δευτεροβάθμια εκπαίδευση περιλαμβάνει τόσο την ακαδημαϊκή όσο και την επαγγελματική κατάρτιση. Ωστόσο, η εφαρμογή μεθόδων διδασκαλίας της υπολογιστικής σκέψης στη δευτεροβάθμια εκπαίδευση βρίσκεται ακόμη στα αρχικά στάδια. Υπάρχουν πολλές προκλήσεις που πρέπει να αντιμετωπιστούν, όπως η έλλειψη κατάρτισης των εκπαιδευτικών και η έλλειψη πόρων υπολογιστικής σκέψης. Με τη σωστή υποστήριξη, η υπολογιστική σκέψη μπορεί να γίνει πολύτιμο εργαλείο στη δευτεροβάθμια εκπαίδευση.. Διδάσκοντας στους μαθητές πώς να συλλογίζονται λογικά, να αφαιρούν και να αποσυνθέτουν, θα είναι καλύτερα εξοπλισμένοι για να αντιμετωπίσουν προβλήματα του πραγματικού κόσμου.
Integral inequalities of Hermite-Hadamard type for $(α,m)$-GA-convex functions
Creators: name: Ji, Ai-Ping
name: Zhang, Tian-Yu
name: Qi, Feng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: Primary 26A51, Secondary 26D15, 41A55

description: In the paper, the authors introduce a notion "$(α,m)$-GA-convex functions" and establish some integral inequalities of Hermite-Hadamard type for $(α,m)$-GA-convex functions.
description: 10 pages
Εκπόνηση επιχειρηματικού σχεδίου σε ιδιωτικό ΙΕΚ (Ινστιτούτο Επαγγελματικής Κατάρτισης)
Creators: name: Γλίνα, Ιωάννα
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Επιχειρηματικό σχέδιο
subject: Ιδιωτικό ΙΕΚ
subject: Στρατηγική
subject: Ανάπτυξη
subject: Ειδικότητες
subject: Επαγγελματική αποκατάσταση

description: Η συγκεκριμένη επένδυση αφορά τη δημιουργία ενός Ινστιτούτου Επαγγελματικής Κατάρτισης στα βόρια προάστια Αθηνών και συγκεκριμένα στην Κηφισιά. Η ΕΕ προωθεί έντονα την επαγγελματική εκπαίδευση & κατάρτιση. Στην Ελλάδα υπάρχει σημαντική ζήτηση στην αγορά εργασίας για άτομα τα οποία έχουν συγκεκριμένες επαγγελματικές δεξιότητες και εμμέσως δημιουργείται ζήτηση για συγκεκριμένες ειδικότητες. Το συγκεκριμένο ΙΕΚ θα προσφέρει μια σειρά από ειδικότητες, οι οποίες θα πληρούν όλα τα ποιοτικά στάνταρ της σύγχρονης εκπαίδευσης και θα προσφέρουν τα απαραίτητα εφόδια στους σπουδαστές για να μπορέσουν να εργαστούν στον τομέα της επιλογής τους. Επιπλέον, οι συνεργασία του ΙΕΚ με μια σειρά από επιχειρήσεις θα διευκολύνει την επαγγελματική αποκατάσταση των αποφοίτων. Η επωνυμία της επιχείρησης πρόκειται να οριστεί ως ERGOPRO Ι.Κ.Ε., ενώ το συνολικό κόστος της επένδυσης εκτιμάται ότι θα ανέλθει στα 140.058,07€.
Outflow vs. Infall in Spiral Galaxies: Metal Absorption in the Halo of NGC 891
Creators: name: Bregman, Joel N.
name: Miller, Eric D.
name: Seitzer, Patrick
name: Cowley, C. R.
name: Miller, Matthew J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Gas accreting onto a galaxy will be of low metallicity while halo gas due to a galactic fountain will be of near-solar metallicity. We test these predictions by measuring the metal absorption line properties of halo gas 5 kpc above the plane of the edge-on galaxy NGC 891, using observations taken with HST/STIS toward a bright background quasar. Metal absorption lines of Fe II, Mg II, and Mg I in the halo of NGC 891 are clearly seen, and when combined with recent deep H I observations, we are able to place constraints on the metallicity of the halo gas for the first time. The H I line width defines the line broadening, from which we model opacity effects in these metal lines, assuming the absorbing gas is continuously distributed in the halo. The gas-phase metallicities are [Fe/H] = -1.18 +/- 0.07 and [Mg/H] = -0.23 +0.36/-0.27 (statistical errors) and this difference is probably due to differential depletion onto grains. When corrected for such depletion using Galactic gas as a guide, both elements have approximately solar or even supersolar abundances. This suggests that the gas is from the galaxy disk, probably expelled into the halo by a galactic fountain, rather than from accretion of intergalactic gas, which would have a low metallicity. The abundances would be raised by significant amounts if the absorbing gas lies in a few clouds with thermal widths smaller than the rotational velocity of the halo. If this is the case, both the abundances and [Mg/Fe] would be supersolar.
description: 24 pages, 4 figures
A Double White-Dwarf Cooling Sequence in ω Centauri
Creators: name: Bellini, A.
name: Anderson, J.
name: Salaris, M.
name: Cassisi, S.
name: Bedin, L. R.
name: Piotto, G.
name: Bergeron, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have applied our empirical-PSF-based photometric techniques on a large number of calibration-related WFC3/UVIS UV-B exposures of the core of ω Cen, and found a well-defined split in the right part of the white-dwarf cooling sequence (WDCS). The redder sequence is more populated by a factor of ~2. We can explain the separation of the two sequences and their number ratio in terms of the He-normal and He-rich subpopulations that had been previously identified along the cluster main sequence. The blue WDCS is populated by the evolved stars of the He-normal component (~0.55 Msun CO-core DA objects) while the red WDCS hosts the end-products of the He-rich population (~0.46 Msun objects, ~10% CO-core and ~90% He-core WDs). The He-core WDs correspond to He-rich stars that missed the central He-ignition, and we estimate their fraction by analyzing the population ratios along the cluster horizontal branch.
description: 6 pages, 4 figures, accepted for publication in ApJ Letters. Fixed a typo in the metadata
title: Το στρατηγικό μάνατζμεντ ανθρωπίνων πόρων ως ανταγωνιστικό πλεονέκτημα : μελέτη περίπτωσης
title: Strategic human resource management as a competitive advantage : case study
titleType: AlternativeTitle
Creators: name: Γουρδομιχάλη, Όλγα
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Βιώσιμο ανταγωνιστικό πλεονέκτημα
subject: Δέσμευση εργαζομένων στον τραπεζικό κλάδο
subject: Ανάπτυξη ανθρωπίνου κεφαλαίου
subject: Στρατηγικό μάνατζμεντ ανθρωπίνων πόρων
subject: Ελληνικό τραπεζικό σύστημα

description: Οι πρακτικές Στρατηγικού Μάνατζμεντ Ανθρωπίνων Πόρων, η ανάπτυξη του ανθρωπίνου κεφαλαίου και η δέσμευση των εργαζομένων εξετάστηκαν ως προς το ανταγωνιστικό πλεονέκτημα στο τραπεζικό κλάδο στην Ελλάδα. Προκειμένου να διαμορφωθεί το κατάλληλο ανταγωνιστικό πλεονέκτημα μέσω των εργαζομένων, τα πιστωτικά ιδρύματα θα πρέπει να εστιάσουν κυρίως στο Στρατηγικό Μάνατζμεντ Ανθρωπίνων Πόρων και στην ανάπτυξη του ανθρωπίνου κεφαλαίου. Οι οργανισμοί του δείγματος της έρευνας, δηλαδή οι 4 Ελληνικές τράπεζες αποδείχθηκε ότι συγκαταλέγονται μεταξύ εκείνων των οργανισμών που έχουν επίγνωση του γεγονότος ότι οι ανθρώπινοι πόροι αποτελούν αναπόσπαστο μέρος της επίδοσης του οργανισμού. Τα ευρήματα της έρευνας υποδηλώνουν μια γραμμική σχέση μεταξύ εξαρτημένης μεταβλητής (Βιώσιμο Ανταγωνιστικό Πλεονέκτημα) και των ανεξάρτητων μεταβλητών (Στρατηγικό Μάνατζμεντ Ανθρωπίνων Πόρων, Ανάπτυξη Ανθρωπίνου Κεφαλαίου, Δέσμευση Εργαζομένων) σε επίπεδο σημαντικότητας 1%.
Directed random walks on hierarchic trees with continuous branching: a renormalization group approach
Creators: name: Saakian, David B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate the directed random walk on hierarchic trees. Two cases are investigated: random variables on deterministic trees with a continuous branching, and random variables on the trees constructed trough the random branching process. We derive renormalization group (partial differential) equations for the branching models with binomial, Poisson and compound Poisson distributions of random variables on the links of tree. These renormaliation group equations are new class of reaction-diffusion equations in 1-dimension.
description: 6 pages
Dear Alice - New work for The Immersive Guitar
Creators: name: Schaupp, Karin
name: Tomlinson, Vanessa
Publisher: name: Griffith University
Year: 2023
Subjects: subject: 190406 Music Composition
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 190407 Music Performance

description: Dear Alice is a new composition for The Immersive Guitar - an 11:1 scale classical guitar originally built for Curiocity Brisbane (2021) by the research team Tomlinson, Schaupp with Hassan Karampour, Bruce Wolfe and Jim Redgate. This new work was commissioned by The Adelaide Guitar Festival to mark the purchase of this installation by the Adelaide Festival Centre. Dear Alice is composed and performed by Karin Schaupp and Vanessa Tomlinson - each contributing compositional ideas alongside performance techniques. This work corporates text from Lewis Caroll's Alice in Wonderland, drawing upon the original concept for The Immersive Guitar - to have the experience of climbing inside the soundhole of a guitar. Dear Alice is scored for The Immersive Guitar and a classical guitar to be played together - by both of the performers. This premier performance formed part of the 2022 Adelaide Guitar Festival, with visitors signing up for tours of the installation, with the composition shared in the lobby/waiting room of the Festival Centre, and online. The work was also shared via The Morning Show (Channel 7) and The Advertiser. Dear Alice builds on the world premier of The Immersive Guitar at Curiocity Brisbane. In this Adelaide iteration there are refinements with the instrument tuning, new performance techniques explored, the pairing of the original sized guitar with The Immersive Guitar, and the introduction of storytelling into the project.