cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analytically determined topological phase diagram of the proximity-induced gap in diffusive n-terminal Josephson junctions
Creators: name: Amundsen, Morten
name: Ouassou, Jabir Ali
name: Linder, Jacob
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Multiterminal Josephson junctions have recently been proposed as a route to artificially mimic topological matter with the distinct advantage that its properties can be controlled via the superconducting phase difference, giving rise to Weyl points in 4-terminal geometries. A key goal is to accurately determine when the system makes a transition from a gapped to non-gapped state as a function of the phase differences in the system, the latter effectively playing the role of quasiparticle momenta in conventional topological matter. We here determine the proximity gap phase diagram of diffusive n-terminal Josephson junctions, both numerically and analytically, by identifying a class of solutions to the Usadel equation at zero energy in the full proximity effect regime. We present an analytical equation which provides the phase diagram for an arbitrary number of terminals n. After briefly demonstrating the validity of the analytical approach in the previously studied 2- and 3-terminal cases, we focus on the 4-terminal case and map out the regimes where the electronic excitations in the system are gapped and non-gapped, respectively, demonstrating also in this case full agreement between the analytical and numerical approach.
description: 10 pages, 6 figures
Slow and fast methyl group rotations in fragile glass-formers studied by NMR
Creators: name: Böhmer, Roland
name: Qi, F.
name: Hinze, G.
name: Sillescu, H.
name: Zimmermann, H.
Publisher: name: Elsevier
Year: 2000
Subjects: subject: 530

description: The spin-lattice relaxation times of the selectively ring deuterated, fragile glass-formers propylene carbonate and toluene were compared with those measured for species which were specifically labeled at the methyl groups. It was found that the dynamics of the CD3 group is strongly decoupled from that associated with the primary response of toluene, while for propylene carbonate the degree of decoupling is relatively weak. The experimental results could be described successfully using a model which takes into account the ring dynamics as well as those of the methyl group.
Production of D-mesons in $p$+$p$ and $p$+Pb collisions at LHC energies
Creators: name: Baral, R. C.
name: Tripathy, S. K.
name: Younus, M.
name: Naik, Z.
name: Sahu, P. K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present theoretical model comparison with published ALICE results for D-mesons (D$^0$, D$^+$ and D$^{*+}$) in $p$+$p$ collisions at $\sqrt{s}$ = 7 TeV and $p$+Pb collisions at $\sqrt{s_{NN}}$ = 5.02 TeV. Event generator HIJING, transport calculation of AMPT and calculations from NLO(MNR) and FONLL have been used for this study. We found that HIJING and AMPT model predictions are matching with published D-meson cross-sections in $p$+$p$ collisions, while both under-predict the same in $p$+Pb collisions. Attempts were made to explain the $R_{pPb}$ data using NLO-pQCD(MNR), FONLL and other above mentioned models.
description: 11 pages, 3 figures (Accepted in IJMP-E)
Juvenile crime and juvenile delinquency administration in Addis Ababa: the case of yeka sub city
Creators: name: Yeshiwendim, Teferi
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The main objective of this study is about juvenile crime and juvenile delinquency administration in Yeka Sub City of Addis Ababa City Administration. A random sampling method was used to select a sample of 29 respondents. Data was presented and analyzed using descriptive technique. Based on the findings of this study, the researcher has reached the following conclusions. Firstly, the Sub City administration has faced problems to address the problems of juvenile delinquency because of lack of coordination and collaboration within the structures in the Sub City administration. Secondly, absence of trained manpower, lack of funding, lack of advocacy, absence of professionals, absence of research and absence of media outlet. Thirdly, the research has also identified implementation problems, information and management problems, lack of follow up, and the inability to build capacity and strengthen the structures in Yeka Sub City administration. The researcher recommended that Yeka Sub City administration should improve the administration in order to achieve standards set by Yeka Sub City and City Government of Addis Ababa, the Ministry of Health and other relevant organizations. Moreover, Yeka Sub City must also revise and introduce a comprehensive system that can pull together the administration for youth and children. The Sub city should up-date all existing, outdated procedures/systems to reflect and incorporate the principles of international standards of juvenile administration. Yeka Sub City must equip itself with capable personnel for the proper treatment of youth problems. It must also work for a well-designed and compiled data/information system to further investigate and to make better decisions and conduct studies. It should also work to develop partnerships and coordination to achieve more harmonization in the units and structures of the Sub City administration. Finally, more updated and planned administration is therefore needed in order to achieve its objective of educating and re-integrating children with a view of assisting them to assume socially constructive and productive roles in society.
Coulomb-blockade and Pauli-blockade magnetometry
Creators: name: Széchenyi, Gábor
name: Pályi, András
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Scanning-probe magnetometry is a valuable experimental tool to investigate magnetic phenomena at the micro- and nanoscale. We theoretically analyze the possibility of measuring magnetic fields via the electrical current flowing through quantum dots. We characterize the shot-noise-limited magnetic-field sensitivity of two devices: a single dot in the Coulomb blockade regime, and a double dot in the Pauli blockade regime. Constructing such magnetometers using carbon nanotube quantum dots would benefit from the large, strongly anisotropic and controllable g tensors, the low abundance of nuclear spins, and the small detection volume allowing for nanoscale spatial resolution; we estimate that a sensitivity below $1 \, μ\text{T}/\sqrt{\text{Hz}}$ can be achieved with this material. As quantum dots have already proven to be useful as scanning-probe electrometers, our proposal highlights their potential as hybrid sensors having in situ switching capability between electrical and magnetic sensing.
description: 12 pages, 5 figures
A Sample-Based Forest Monitoring Strategy Using Landsat, AVHRR and MODIS Data to Estimate Gross Forest Cover Loss in Malaysia between 1990 and 2005
Creators: name: Giree, Namita
name: Stehman, Stephen V.
name: Potapov, Peter
name: Hansen, Matthew C.
Publisher: name: MDPI
Year: 2013
Subjects: Landsat
MODIS
AVHRR
Indonesia
probability proportional to x sampling
stratified sampling

description: Insular Southeast Asia is a hotspot of humid tropical forest cover loss. A sample-based monitoring approach quantifying forest cover loss from Landsat imagery was implemented to estimate gross forest cover loss for two eras, 1990–2000 and 2000–2005. For each time interval, a probability sample of 18.5 km × 18.5 km blocks was selected, and pairs of Landsat images acquired per sample block were interpreted to quantify forest cover area and gross forest cover loss. Stratified random sampling was implemented for 2000–2005 with MODIS-derived forest cover loss used to define the strata. A probability proportional to x (πpx) design was implemented for 1990–2000 with AVHRR-derived forest cover loss used as the x variable to increase the likelihood of including forest loss area in the sample. The estimated annual gross forest cover loss for Malaysia was 0.43 Mha/yr (SE = 0.04) during 1990–2000 and 0.64 Mha/yr (SE = 0.055) during 2000–2005. Our use of the πpx sampling design represents a first practical trial of this design for sampling satellite imagery. Although the design performed adequately in this study, a thorough comparative investigation of the πpx design relative to other sampling strategies is needed before general design recommendations can be put forth.
Colour, kitsch, and Christ : a search for the pure through the person of Mary in the Annunciation
Creators: name: Firth, Rosalee Anna.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Critical pedagogies in the secondary school classroom: Space, engagement, and emotions
Creators: name: Alfandari, Nelly
Publisher: name: London South Bank University
Year: 2023

description: The neoliberal school is marked by an exam-focused, league table-driven curriculum, matched with an array of school policies on performance and conduct and a stifling of critical engagement. In this context, this qualitative research study explores the challenges and transformative potentials of implementing critical pedagogies in the contemporary European secondary school classroom. The study reflects on the inclusivity of learning spaces, thereby taking into account high exclusion rates and segregation of students from marginalised communities and/or who are diverse learners. To research a multitude of classroom experiences of power, learning, and belonging, methodologically, alongside other qualitative methods, the research draws on image theatre, a method of the critical and participatory Theatre of the Oppressed. It proposes that image theatre, explored through a critical spatial lens, offers an active research method to explore pedagogical practices with and through the body. The research focuses on power dynamics in classrooms. Through the theatre, students, teachers and researcher together generate data by engaging and playing with the very power dynamics the research explores. The study engages with the contributions as well as challenges that the application of critical pedagogies engendered on a structural, relational, and emotional level. Findings show that sustainable changes towards an inclusive learning environment rely on policy and institutional support, yet a focus on spatial and temporal practices in the classroom application of critical pedagogies can support the production of more inclusive learning spaces. The thesis argues that critical pedagogical interventions allow for shifts in the terms of engagement within the learning spaces, offering participants possibilities to relate to both the learning and the research spaces through changed subjectification. This research contributes to important discussions on inclusive and critical pedagogical practices, while the theatre method opens spaces to collectively reimagine the classroom, whilst rehearsing for change.
Road Marking Contrast Threshold Revisited
Creators: name: Spieringhs, Rik Marco
name: Smet, Kevin
name: Heynderickx, Ingrid
name: Hanselaer, Peter
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Plant Biology

description: Sufficient contrast between road surface and road markings is key for a safe and comfortable driving experience. This calls for a comprehensive and well established contrast (threshold) model, which ideally results in a single contrast threshold value independent of object angular size or road luminance. The contrast threshold model introduced by Adrian is still commonly used in road lighting. More recently, new contrast metrics that also predict supra-threshold contrast visibility have been proposed, but the corresponding visibility thresholds are not yet known. In the present study, participants are presented a rendering of a highway, including road marking arrows of various size and luminance and were asked to indicate the direction of the arrow. The luminance of the road surface, acting as background for the markings, was varied too. Due to the very low luminance values and the very small differences in luminance, measurement accuracy and calibration issues require special attention. The results show good agreement with Adrian’s visibility model (R2 = 0.75) in terms of luminance contrast, background luminance and size. In addition, we used our experimental data to define contrast thresholds for several other existing image based contrast models. Unfortunately, it seems to be impossible to state one unique threshold contrast value independent of object angular size and road luminance.
Endo-S-c-di-GMP Analogues-Polymorphism and Binding Studies with Class I Riboswitch
Creators: name: Zhou, Jie
name: Sayre, David A.
name: Wang, Jingxin
name: Pahadi, Nirmal
name: Sintim, Herman O.
Publisher: name: MDPI
Year: 2012
Subjects: c-di-GMP
endo-S-c-di-GMP
polymorphism
G-quadruplex
analogues
DOSY
Vc2 RNA
fluorescence
aptamer

description: C-di-GMP, a cyclic guanine dinucleotide, has been shown to regulate biofilm formation as well as virulence gene expression in a variety of bacteria. Analogues of c-di-GMP have the potential to be used as chemical probes to study c-di-GMP signaling and could even become drug leads for the development of anti-biofilm compounds. Herein we report the synthesis and biophysical studies of a series of c-di-GMP analogues, which have both phosphate and sugar moieties simultaneously modified (called endo-S-c-di-GMP analogues). We used computational methods to predict the relative orientation of the guanine nucleobases in c-di-GMP and analogues. DOSY NMR of the endo-S-c-di-GMP series showed that the polymorphism of c-di-GMP can be tuned with conservative modifications to the phosphate and sugar moieties (conformational steering). Binding studies with Vc2 RNA (a class I c-di-GMP riboswitch) revealed that conservative modifications to the phosphate and 2'-positions of c-di-GMP dramatically affected binding to class I riboswitch.
An mCherry biolaser based on microbubble cavity with ultra-low threshold
Creators: name: Ma, Jiyang
name: Zhao, Shuoying
name: Peng, Xubiao
name: Li, Gaoshang
name: Wang, Yuanjin
name: Zhang, Bo
name: Zhao, Qing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Biolasers show considerable potential in the biomedical field. Fluorescent protein (FP) is a type of biomaterial with good luminescence efficiency that can be used as the luminescent gain medium in biolasers. Due to the higher cell/tissue permeability, lower cell phototoxicity, and relatively less background fluorescence than other fluorescent proteins, the red fluorescent protein is more suitable in biological applications. MCherry is the most extensively used high-quality red fluorescent protein because of its short maturation time and stable luminescence properties. In this study, using mCherry and microbubble cavity, we realize a highly stable mCherry fluorescent protein laser. The laser resonator achieves a quality factor of 10^8, which is the highest Q factor among the currently available FP lasers. Moreover, this laser exhibits low threshold of 286 fJ, which can effectively protect the luminescent material from being damaged by pump light. Such a threshold is the lowest in the FP lasers as per our knowledge. The prepared laser shows excellent stability in a wide pH range with good photobleaching resistance and can be stored at 4 degree for nearly a month. Also, the laser can serve as a high-sensitivity molecular concentration detector with mCherry as biomarker, owing to its lasing threshold behavior.
description: 10 pages, 6 figures
Being unable to be : revealing emotional abjection and self awareness through Shiva process self inquiry and song
Creators: name: Jowett, Charlotte Mary Robin.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Nucleon localization and fragment formation in nuclear fission
Creators: name: Zhang, C. L.
name: Schuetrumpf, B.
name: Nazarewicz, W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: An electron localization measure was originally introduced to characterize chemical bond structures in molecules. Recently, a nucleon localization based on Hartree-Fock densities has been introduced to investigate $α$-cluster structures in light nuclei. Compared to the local nucleonic densities, the nucleon localization function has been shown to be an excellent indicator of shell effects and cluster correlations. Using the spatial nucleon localization measure, we investigate the emergence of fragments in fissioning heavy nuclei. To illustrate basic concepts of nucleon localization, we employ the self-consistent energy density functional method with a quantified energy density functional optimized for fission studies. We study the particle densities and spatial nucleon localization distributions along the fission pathways of $^{264}$Fm, $^{232}$Th and $^{240}$Pu. We demonstrate that the fission fragments are formed fairly early in the evolution, well before scission. We illustrate the usefulness of the localization measure by showing how the hyperdeformed state of $^{232}$Th can be understood in terms of a quasimolecular state made of $^{132}$Sn and $^{100}$Zr fragments. Compared to nucleonic distributions, the nucleon localization function more effectively quantifies nucleonic clustering: its characteristic oscillating pattern, traced back to shell effects, is a clear fingerprint of cluster/fragment configurations. This is of particular interest for studies of fragment formation and fragment identification in fissioning nuclei.
description: 7 pages, 8 figures
Search for $CP$ violation using $\hat{T}$-odd correlations in $B^{0} \to p \bar p K^{+} π^{-}$ decays
Creators: name: LHCb Collaboration
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for $CP$ and $P$ violation in charmless four-body $B^{0} \to p \bar p K^{+} π^{-}$ decays is performed using triple-product asymmetry observables. It is based on proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of $7$, $8$ and $13$ TeV, corresponding to a total integrated luminosity of $8.4$ fb$^{-1}$. The $CP$- and $P$-violating asymmetries are measured both in the integrated phase space and in specific regions. No evidence is seen for $CP$ violation. $P$-parity violation is observed at a significance of 5.8 standard deviations
description: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-003.html (LHCb public pages)
Kinetic Mixing from Kaluza-Klein Modes: A Simple Construction for Portal Matter
Creators: name: Wojcik, George N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The vector portal/kinetic mixing simplified model of dark matter, in which thermal dark matter of a mass ranging from a few MeV to a few GeV can be realized with a dark-sector $U(1)$, relies on a small kinetic mixing term between this dark $U(1)$ and the Standard Model (SM) hypercharge. It is well-known that kinetic mixing of the right magnitude can be generated at one loop by the inclusion of "portal matter" fields which are charged under both the dark $U(1)$ and the SM hypercharge, and it has been previously argued on phenomenological grounds that fermionic portal matter fields must exhibit a specific set of characteristics: They must be vector-like and have the same Standard Model group representations as existing SM fermions. A natural explanation for the presence of dark $U(1)$-charged copies of SM fermions would be to enlarge the dark gauge group and embed the SM and the portal matter into a single dark multiplet, however, previous works in this direction require significant ad hoc additions to ensure that the portal matter fields are vector-like while the SM fields are chiral, and rely on complicated dark Higgs sectors to realize the appropriate symmetry breaking. In this paper, we argue that a model with large extra dimensions can easily generate chiral SM fermions and vector-like portal matter from a single dark bulk multiplet, while allowing for a far simpler dark Higgs sector. We present a minimal construction of this "Kaluza-Klein (KK) portal matter" and explore its phenomenology at the LHC, noting that even our simple realization exhibits signatures unique from those of more conventional models with large extra dimensions and 4-D portal matter. Generically, the portal matter sector fields will be much lighter than the other KK fields in the model, so the portal matter sector has the potential to be the first observable experimental signature of an extra dimension.
description: 49 pages, 14 figures, v4: some discussions added, version accepted to PRD
Physical Activity and Brain Function in Older Adults at Increased Risk for Alzheimer’s Disease
Creators: name: Smith, J. Carson
name: Nielson, Kristy A.
name: Woodard, John L.
name: Seidenberg, Michael
name: Rao, Stephen M.
Publisher: name: MDPI
Year: 2013
Subjects: Alzheimer's disease
cognition
exercise
physical activity
APOE genotype
genetic risk
mild cognitive impairment
memory
MRI
neuroimaging

description: Leisure-time physical activity (PA) and exercise training are known to help maintain cognitive function in healthy older adults. However, relatively little is known about the effects of PA on cognitive function or brain function in those at increased risk for Alzheimer’s disease through the presence of the apolipoproteinE epsilon4 (APOE-ε4) allele, diagnosis of mild cognitive impairment (MCI), or the presence of metabolic disease. Here, we examine the question of whether PA and exercise interventions may differentially impact cognitive trajectory, clinical outcomes, and brain structure and function among individuals at the greatest risk for AD. The literature suggests that the protective effects of PA on risk for future dementia appear to be larger in those at increased genetic risk for AD. Exercise training is also effective at helping to promote stable cognitive function in MCI patients, and greater cardiorespiratory fitness is associated with greater brain volume in early-stage AD patients. In APOE-ε4 allele carriers compared to non-carriers, greater levels of PA may be more effective in reducing amyloid burden and are associated with greater activation of semantic memory-related neural circuits. A greater research emphasis should be placed on randomized clinical trials for exercise, with clinical, behavioral, and neuroimaging outcomes in people at increased risk for AD.
"Assessment on the Performance of Integrated Housing Development Program with Particular Reference to the Program's Objectives: Focusing on Addis Ababa
Creators: name: Merkebu, Kidst
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2014

description: This study assesses the performance of the Integrated Housing Development Program/Condominium Housing Construction Project in Addis Ababa City against its objectives. IHDP is complex and challenging program. It necessitates huge resources from the government; and also requires efficient resource management system. The houses being constructed are expected to be of low cost or affordable to the low income group and good quality. However, does the program achieve its objectives? The qualitative research methods specifically descriptive research method applied. Survey method was used to collect data. The target populations were condominium houses completed and transferred to beneficiaries within Addis Ababa. To select sample respondents from the target population's simple random sampling techniques were used. Although the government set low cost houses to low and middle income people but the results of my survey shows low income people were not benefiting from this program, due to problems in both registration and distribution process, increase in the price of houses due to poor workmanship and using poor quality materials. The survey result also shows that the houses constructed are of poor quality and fixed with substandard or poor quality materials. The other factor that makes the houses unaffordable to low income people was price increase due to delay i.e.it took from one up to one and half years to construct and distribute condominium houses. The other issue in construction and distribution of condominium houses is corruption. The government of Ethiopia is planning to continue the condominium housing construction project by itself using a single bank CBE. The government is involved starting from design preparation, awarding to contractors and distribution of houses to people. It also fixes prices of both inputs and houses. In general the idea of condominium houses is noble but its implementation has many problems. Key words: IHDP, Condominium houses, low and middle income people, government objectives, affordability, quality
Better Metrics to Automatically Predict the Quality of a Text Summary
Creators: name: Rankel, Peter A.
name: Conroy, John M.
name: Schlesinger, Judith D.
Publisher: name: MDPI
Year: 2012
Subjects: multi-document summarization
update summarization
evaluation
computational linguistics
text processing

description: In this paper we demonstrate a family of metrics for estimating the quality of a text summary relative to one or more human-generated summaries. The improved metrics are based on features automatically computed from the summaries to measure content and linguistic quality. The features are combined using one of three methods—robust regression, non-negative least squares, or canonical correlation, an eigenvalue method. The new metrics significantly outperform the previous standard for automatic text summarization evaluation, ROUGE.
Untangling the Near-IR Spectral Features in the Protoplanetary Environment of KH 15D
Creators: name: Arulanantham, Nicole A.
name: Herbst, William
name: Gilmore, Martha S.
name: Cauley, P. Wilson
name: Leggett, S. K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on Gemini/GNIRS observations of the binary T Tauri system V582 Mon (KH 15D) at three orbital phases. These spectra allow us to untangle five components of the system: the photosphere and magnetosphere of star B, the jet, scattering properties of the ring material, and excess near-IR radiation previously attributed to a possible self-luminous planet. We confirm an early-K subgiant classification for star B and show that the magnetospheric He I emission line is variable, possibly indicating increased mass accretion at certain times. As expected, the H$_2$ emission features associated with the inner part of the jet show no variation with orbital phase. We show that the reflectance spectrum for the scattered light has a distinctive blue slope and spectral features consistent with scattering and absorption by a mixture of water and methane ice grains in the 1-50 $μ$m size range. This suggests that the methane frost line is closer than $\sim$5 AU in this system, requiring that the grains be shielded from direct radiation. After correcting for features from the scattered light, jet, magnetosphere, and photosphere, we confirm the presence of leftover near-IR light from an additional source, detectable near minimum brightness. A spectral emission feature matching the model spectrum of a 10 M$_{J}$, 1 Myr old planet is found in the excess flux, but other expected features from this model are not seen. Our observations, therefore, tentatively support the picture that a luminous planet is present within the system, although they cannot yet be considered definitive.
description: Accepted by ApJ
The dialogic turn : how communication and collaborative modeling can enhance the educational turn
Creators: name: Cloke, Oliver.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Magnetic field effects in electron systems with imperfect nesting
Creators: name: Sboychakov, A. O.
name: Rakhmanov, A. L.
name: Kugel, K. I.
name: Rozhkov, A. V.
name: Nori, Franco
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyze the effects of an applied magnetic field on the phase diagram of a weakly-correlated electron system with imperfect nesting. The Hamiltonian under study describes two bands: electron and hole ones. Both bands have spherical Fermi surfaces, whose radii are slightly mismatched due to doping. These types of models are often used in the analysis of magnetic states in chromium and its alloys, superconducting iron pnictides, AA-type bilayer graphene, borides, etc. At zero magnetic field, the uniform ground state of the system turns out to be unstable against electronic phase separation. The applied magnetic field affects the phase diagram in several ways. In particular, the Zeeman term stabilizes new antiferromagnetic phases. It also significantly shifts the boundaries of inhomogeneous (phase-separated) states. At sufficiently high fields, the Landau quantization gives rise to oscillations of the order parameters and of the Néel temperature as a function of the magnetic field.
description: 12 pages, 5 eps figures, several typos corrected, new references added
صياغة إستراتيجية الأعمال النموذجية في المنظمات
Creators: name: خلوفي, سفيان
Publisher: name: figshare
Year: 2023
Subjects: Innovation management
Strategy
Strategy, management and organisational behaviour not elsewhere classified

description: هدفت هذه الورقة البحثية إلى التعرف على كيفية صياغة إستراتيجية الأعمال في منظمات الأعمال. من خلال توضيح إطارها المفاهيمي وموقعها داخل المنظمة وتحديد اختياراتها الإستراتيجية. وتوصلت الورقة البحثية إلى أن صياغة إستراتيجية الأعمال في المنظمات تمر من خلال مرحلة تحليل المواقف وهي عملية البحث عن المواءمة الإستراتيجية بين الفرص الخارجية ونقاط القوة الداخلية مع تجنب التهديدات الخارجية ونقاط الضعف الداخلي ويتم تحليل الموقف كما يلي :تحديد قائمة مركزة بالفرص والتهديدات، تحديد قائمة مركزة بالقوة والضعف، تحديد السوق الملائمة وإيجاد القوة السانحة، إعداد خلاصة بالعوامل الإستراتيجية، وأوصت الورقة البحثية في الأخير أنه على المؤسسات أن تستخدم الأنواع الثلاثة من الاستراتيجيات (إستراتيجية المنظمة، إستراتيجية الأعمال، إستراتيجية الوظيفة( في الوقت نفسه، كما أن هذه الاستراتيجيات تكمل وتدعم بعضها بعضا. الكلمات المفتاحية: إستراتيجية، إستراتيجية الأعمال، إستراتيجية المنظمة، إستراتيجية وظيفة، تحليل المواقف The purpose of this paper is to identify how business strategy is formulated in business organizations. By clarifying its conceptual framework, its location within the organization, and identifying its strategic choices, the paper concluded that the formulation of the business strategy in the organizations goes through the analysis of attitudes, a process of seeking strategic alignment between external opportunities and internal strengths while avoiding external threats and internal weaknesses. Situation analysis is as follows Identifying a focused list of opportunities and threats, identifying a focused list of strengths and weaknesses, identifying an appropriate market and creating opportunity, preparing a summary of strategic factors, Finally, the paper recommended that institutions should use the three types of strategies (corporate strategy, business strategy, job strategy) at the same time, and that these strategies complement and support each other. Key words: strategy, business strategy, organization strategy, job strategy, position analysis
Dirac Matrices and Feynman’s Rest of the Universe
Creators: name: Kim, Young S.
name: Noz, Marilyn E.
Publisher: name: MDPI
Year: 2012
Subjects: Dirac gamma matrices
Feynman's rest of the universe
two coupled oscilators
Wigner's phase space
non-canonical transformations
group generators
SL(4, r) isomorphic O(3, 3)
quantum mechanics interpretation

description: There are two sets of four-by-four matrices introduced by Dirac. The first set consists of fifteen Majorana matrices derivable from his four γ matrices. These fifteen matrices can also serve as the generators of the group 𝑆𝐿(4,𝑟). The second set consists of ten generators of the 𝑆𝑝(4) group which Dirac derived from two coupled harmonic oscillators. It is shown possible to extend the symmetry of 𝑆𝑝(4) to that of 𝑆𝐿(4,𝑟) if the area of the phase space of one of the oscillators is allowed to become smaller without a lower limit. While there are no restrictions on the size of phase space in classical mechanics, Feynman’s rest of the universe makes this 𝑆𝑝(4)-to-𝑆𝐿(4,𝑟) transition possible. The ten generators are for the world where quantum mechanics is valid. The remaining five generators belong to the rest of the universe. It is noted that the groups 𝑆𝐿(4,𝑟) and 𝑆𝑝(4) are locally isomorphic to the Lorentz groups 𝑂(3,3) and 𝑂(3,2) respectively. This allows us to interpret Feynman’s rest of the universe in terms of space-time symmetry.
Assessing Public Institutions Capacity for the Implementation of their Mandates:the Case of Ethiopian Ministry of Trade .
Creators: name: Mohammed, Kumneger
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: The aim of this study is to assess institutional capacity of public institution for the implementation of their mandates with due focus on Ethiopian ministry of trade. The capacity of the organization was assessed from human resource, financial resource, strategy and mission and physical infrastructure and facilities dimensions. In order to achieve this objective, data were collected though questionnaires, interview and document review. The population of the study was grouped in to customers, employee and management. Purposive, accidental and simple random sampling methods were employed to gather data. To analyze the data, semi- structured questionnaires were prepared and distributed to the all levels of employees under Ministry of Trade on the simple random sampling techniques, In addition to the questionnaires, semi structured interview was carried out with purposely sampled senior managements team. To triangulate the data obtained from employees and managements, semi structured questionnaire were also distributed and gathered from customers of the organization. Data were analyzed in tables, chart and graphs by using percent and mean. The finding of the study revealed that the organization has faced several challenge in human resource dimension. High employee turnover critically challenged the organization to not effectively execute its mandates. In terms of financial resource, though the organization is capable enough to obtain sufficient fund to run its operations, however capacity challenges are observed in utilizing the allocated budgets effectively. Adequate Physical infrastructures are in place to support the organization functions. However, frequent office utilities service interruption coupled with insufficient manpower and skill gaps of employee created customer's dissatisfaction. Hence, it is recommended that the organization should give due attention to human resource development. In addition to that, to retain skilled man power and to attract the best man to the organization, the organization should work on non-financial incentive schemes. Furthermore, to improve the budget utilization practice, the senior's management should develop a controlling mechanism to examine budget status
Maurer-Cartan elements in the Lie models of finite simplicial complexes
Creators: name: Buijs, Urtzi
name: Félix, Yves
name: Murillo, Aniceto
name: Tanré, Daniel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55P62, 17B10

description: In a previous work, we have associated a complete differential graded Lie algebra to any finite simplicial complex in a functorial way. Similarly, we have also a realization functor from the category of complete differential graded Lie algebras to the category of simplicial sets. We have already interpreted the homology of a Lie algebra in terms of homotopy groups of its realization. In this paper, we begin a dictionary between models and simplicial complexes by establishing a correspondence between the Deligne groupoid of the model and the connected components of the finite simplicial complex.
Hand Gesture Recognition with Two Stage Approach Using Transfer Learning and Deep Ensemble Learning
Creators: name: Savaş, Serkan
name: Ergüzen, Atilla
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Human-Computer Interaction (HCI) has been the subject of research for many years, and recent studies have focused on improving its performance through various techniques. In the past decade, deep learning studies have shown high performance in various research areas, leading researchers to explore their application to HCI. Convolutional neural networks can be used to recognize hand gestures from images using deep architectures. In this study, we evaluated pre-trained high-performance deep architectures on the HG14 dataset, which consists of 14 different hand gesture classes. Among 22 different models, versions of the VGGNet and MobileNet models attained the highest accuracy rates. Specifically, the VGG16 and VGG19 models achieved accuracy rates of 94.64% and 94.36%, respectively, while the MobileNet and MobileNetV2 models achieved accuracy rates of 96.79% and 94.43%, respectively. We performed hand gesture recognition on the dataset using an ensemble learning technique, which combined the four most successful models. By utilizing these models as base learners and applying the Dirichlet ensemble technique, we achieved an accuracy rate of 98.88%. These results demonstrate the effectiveness of the deep ensemble learning technique for HCI and its potential applications in areas such as augmented reality, virtual reality, and game technologies.
description: ICISNA'23 - 1st International Conference on Intelligent Systems and New Applications Proceedings Book, Liverpool, UNITED KINGDOM, April 28-30, 2023. E-ISBN: 978-605-72180-3-2
Coherent Population Oscillation-Based Light Storage
Creators: name: Neveu, P.
name: Maynard, M. -A.
name: Bouchez, R.
name: Lugani, J.
name: Ghosh, R.
name: Bretenaker, F.
name: Goldfarb, F.
name: Brion, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically study the propagation and storage of a classical field in a $Λ$-type atomic medium using coherent population oscillations (CPOs). We show that the propagation eigenmodes strongly relate to the different CPO modes of the system. Light storage in such modes is discussed by introducing a "populariton" quantity, a mixture of populations and field, by analogy to the dark state polariton used in the context of electromagnetically induced transparency light storage protocol. As experimentally shown, this memory relies on populations and is then - by contrast with usual Raman coherence optical storage protocols - robust to dephasing effects.
description: 5 pages, 3 figures, Supplemental Material
Imaging current-induced switching of antiferromagnetic domains in CuMnAs
Creators: name: Grzybowski, M. J.
name: Wadley, P.
name: Edmonds, K. W.
name: Beardsley, R.
name: Hills, V.
name: Campion, R. P.
name: Gallagher, B. L.
name: Chauhan, J. S.
name: Novak, V.
name: Jungwirth, T.
name: Maccherozzi, F.
name: Dhesi, S. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The magnetic order in antiferromagnetic (AF) materials is hard to control with external magnetic fields. However, recent advances in detecting and manipulating AF order electrically have opened up new prospects for these materials in basic and applied spintronics research. Using x-ray magnetic linear dichroism microscopy, we show here that staggered effective fields generated by electrical current can induce reproducible and reversible modification of the antiferromagnetic domain structure in microdevices fabricated from a tetragonal CuMnAs thin film. The current-induced domain switching is inhomogeneous at the submicron level. A clear correlation between the average domain orientation and the anisotropy of the electrical resistance is demonstrated.
description: 5 pages, 4 figures
Controllability analysis of directed networks in finite states based on pruning motif isomorph
Creators: name: Zhang, Jiarui
name: Huang, Jian
name: Guang, Ji
name: Gao, Jialong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The current driver nodes search methods are difficult to cope with large networks, and the solution process does not consider the node cost. In order to solve the practical control problem of networks with different node costs in finite states, this paper proposes a pruning and motif isomorph search method for driver node set. Firstly, we prove the sufficient conditions for the network to be strictly controllable under partial nodes control, then we classify the nodes and prove the equivalence controllability of the pruning network, and then we establish three models of maximum augmenting path search, local pruning and motif matching to form a complete driver nodes set search algorithm. Finally, the algorithm is validated by real networks. The results show that our method not only guarantee the accuracy of search results, but also has the low time complexity, which can efficiently handle large networks, and no more than 16.84% of the maximum driver nodes can control the whole network.
Operational Automatic Remote Sensing Image Understanding Systems: Beyond Geographic Object-Based and Object-Oriented Image Analysis (GEOBIA/GEOOIA). Part 2: Novel system Architecture, Information/Knowledge Representation, Algorithm Design and Implementation
Creators: name: Baraldi, Andrea
name: Boschetti, Luigi
Publisher: name: MDPI
Year: 2012
Subjects: categorical variable, computer vision
continuous variable
decision-tree classifier
deductive learning from rules
Geographic Object-Based Image Analysis (GEOBIA)
Geographic Object-Oriented Image Analysis (GEOOIA)
image classification
inductive learning from either labeled or unlabeled data
inference
machine learning
physical model
prior knowledge
radiometric calibration
remote sensing
Satellite Image Automatic Mapper (SIAM)
syntactic inference system
statistical model
Strengths Weakness Opportunities and Threats (SWOT) analysis of a project

description: According to literature and despite their commercial success, state-of-the-art two-stage non-iterative geographic object-based image analysis (GEOBIA) systems and three-stage iterative geographic object-oriented image analysis (GEOOIA) systems, where GEOOIA ⊃ GEOBIA, remain affected by a lack of productivity, general consensus and research. To outperform the Quality Indexes of Operativeness (OQIs) of existing GEOBIA/GEOOIA systems in compliance with the Quality Assurance Framework for Earth Observation (QA4EO) guidelines, this methodological work is split into two parts. Based on an original multi-disciplinary Strengths, Weaknesses, Opportunities and Threats (SWOT) analysis of the GEOBIA/GEOOIA approaches, the first part of this work promotes a shift of learning paradigm in the pre-attentive vision first stage of a remote sensing (RS) image understanding system (RS-IUS), from sub-symbolic statistical model-based (inductive) image segmentation to symbolic physical model-based (deductive) image preliminary classification capable of accomplishing image sub-symbolic segmentation and image symbolic pre-classification simultaneously. In the present second part of this work, a novel hybrid (combined deductive and inductive) RS-IUS architecture featuring a symbolic deductive pre-attentive vision first stage is proposed and discussed in terms of: (a) computational theory (system design), (b) information/knowledge representation, (c) algorithm design and (d) implementation. As proof-of-concept of symbolic physical model-based pre-attentive vision first stage, the spectral knowledge-based, operational, near real-time, multi-sensor, multi-resolution, application-independent Satellite Image Automatic Mapper™ (SIAM™) is selected from existing literature. To the best of these authors’ knowledge, this is the first time a symbolic syntactic inference system, like SIAM™, is made available to the RS community for operational use in a RS-IUS pre-attentive vision first stage, to accomplish multi-scale image segmentation and multi-granularity image pre-classification simultaneously, automatically and in near real-time.
Constraining the monochromatic gamma-rays from dark matter annihilation by the LHC
Creators: name: Esmaili, Arman
name: Khatibi, Sara
name: Najafabadi, Mojtaba Mohammadi
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The installation of forward detectors in CMS and ATLAS turn the LHC to an effective photon-photon collider. The elastic scattering of the beam-protons via the emission of photons, which can be identified by tagging the intact protons in the forward detectors, provides a powerful diagnostic of the central production of new particles through photon-photon annihilation. In this letter we study the central production of dark matter particles and the potential of LHC to constrain the cross section of this process. By virtue of the crossing symmetry, this limit can immediately be used to constrain the production of monochromatic gamma-rays in dark matter annihilation, a smoking gun signal under investigation in indirect dark matter searches. We show that with the integrated luminosity $\mathcal{L}=30~{\rm fb}^{-1}$ in LHC at center-of-mass energy $\sqrt{s}=$ 13 TeV, for dark matter masses $\sim (50-600)$ GeV, a model-independent constraint on the cross section of dark matter annihilation to monochromatic gamma-rays at the same order of magnitude as the current Fermi-LAT and the future limits from CTA, can be obtained.
description: 19 pages, 6 figures