cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
O'ZBEKISTON TARAQQIYOTINING YANGI BOSQICHIDA YOSHLAR HUQUQIY ONGINI RIVOJLANTIRISH ISTIQBOLLARI
Creators: name: Isanova Gulbahor Taxirovna «Siyosatshunoslik»kafedrasi dotsenti v.b., s.f.b (PhD) Qodirova  Nigora  Shaydullayevna
Publisher: name: Zenodo
Year: 2023

description: O`zbekiston Respublikasi Prezidenti Shavkat Mirziyoyevning 2022 yil 28 yanvardagi “2022 — 2026 yillarga mo‘ljallangan Yangi O‘zbekistonning Taraqqiyot strategiyasi to‘g‘risida”gi PF-60-conli farmoni bilan yettita ustuvor yo‘nalishdan iborat 2022 — 2026 yillarga mo‘ljallangan Yangi O‘zbekistonning taraqqiyot strategiyasi qabul qilindi. Ushbu strategiyaning Ma’naviy taraqqiyotni ta’minlash va sohani yangi bosqichga olib chiqish deb nomlangan 5-ustuvor yo‘nalishida 70-maqsad: Yoshlarga oid davlat siyosatini takomillashtirish borasida belgilangan vazifalardan biri “Yoshlarning huquqiy ongi va huquqiy madaniyati darajasini yuksaltirish” [1] bo‘lib, unga ko‘ra tegishli muassasa va tashkilotlarning joriy masala bo‘yicha aniq chora-tadbirlarni amalga oshirishlari belgilab berilgan.
Epigenetic Mechanisms of ART-Related Imprinting Disorders: Lessons From iPSC and Mouse Models.
Creators: name: Horánszky, Alex
name: Becker, Jessica
name: Zana, Melinda
name: Ferguson-Smith, Anne C
name: Dinnyés, András
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: genomic imprinting
imprinting disorders
assisted reproductive technology
DNA methylation
mouse models
iPSCs

description: The rising frequency of ART-conceived births is accompanied by the need for an improved understanding of the implications of ART on gametes and embryos. Increasing evidence from mouse models and human epidemiological data suggests that ART procedures may play a role in the pathophysiology of certain imprinting disorders (IDs), including Beckwith-Wiedemann syndrome, Silver-Russell syndrome, Prader-Willi syndrome, and Angelman syndrome. The underlying molecular basis of this association, however, requires further elucidation. In this review, we discuss the epigenetic and imprinting alterations of in vivo mouse models and human iPSC models of ART. Mouse models have demonstrated aberrant regulation of imprinted genes involved with ART-related IDs. In the past decade, iPSC technology has provided a platform for patient-specific cellular models of culture-associated perturbed imprinting. However, despite ongoing efforts, a deeper understanding of the susceptibility of iPSCs to epigenetic perturbation is required if they are to be reliably used for modelling ART-associated IDs. Comparing the patterns of susceptibility of imprinted genes in mouse models and IPSCs in culture improves the current understanding of the underlying mechanisms of ART-linked IDs with implications for our understanding of the influence of environmental factors such as culture and hormone treatments on epigenetically important regions of the genome such as imprints.
MOVPE Preparation of Double-Layer Stepped Silicon(100) for III-V-on-Silicon Solar Cells
Creators: name: Kleinschmidt, P.
name: Döscher, H.
name: Supplie, O.
name: Brückner, S.
name: Hannappel, T.
Publisher: name: WIP
Year: 2012
Subjects: Material Studies, New Concepts and Ultra-High Efficiency
New Materials, Cells and Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 67-69
description: The concept of III-V based high efficiency solar cells on silicon substrates relies on suitable Si(100) preparation
prior to III-V-on-Si heteroepitaxy. The method of choice for large scale III-V growth is metalorganic vapour
phase epitaxy (MOVPE), due to excellent control of material composition and quality and scalability of
production. One of the fundamental problems for III-V-on-Si growth relates to the difference in atomic structure
which manifests itself in the polarity of the III-V material as opposed to the non-polar nature of the silicon
substrate. As a consequence, the step structure of the substrate is vital for defect-free heteroepitaxy, with single
layer steps on the substrate initiating anti-phase disorder in the III-V material, while a double-layer stepped
substrate in principle enables anti-phase-free III-V growth. While UHV preparation of double-layer stepped
Si(100) is well established, less is known about comparable preparation methods in the hydrogen-based MOVPE
environment. We have investigated step formation on Si(100) in this environment and have established suitable
preparation procedures for double-layer steps on Si(100) substrates with different misorientations.
Topology of Smectic Order on Compact Substrates
Creators: name: Xing, Xiangjun
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Smectic orders on curved substrates can be described by differential forms of rank one (1-forms), whose geometric meaning is the differential of the local phase field of density modulation. The exterior derivative of 1-form is the local dislocation density. Elastic deformations are described by superposition of exact differential forms. Applying this formalism to study smectic order on torus as well as on sphere, we find that both systems exhibit many topologically distinct low energy states, that can be characterized by two integer topological charges. The total number of low energy states scales as the square root of the substrate area. For smectic on a sphere, we also explore the motion of disclinations as possible low energy excitations, as well as its topological implications.
description: 4 pages, 3 eps figures, accepted by physical review letters
3D printed biomimetic cochleae and machine learning co-modelling provides clinical informatics for cochlear implant patients.
Creators: name: Lei, Iek Man
name: Jiang, Chen
name: Lei, Chon Lok
name: De Rijk, Simone
name: Tam, Yu Chuen
name: Swords, Chloe
name: Sutcliffe, Michael
name: Malliaras, George
name: Bance, Manohar
name: Huang, Shery
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
/692/700
/692/308/1426
/692/308/575
/639/166/985
/119
/9
/123
/128
/139
article

description: Funder: W D Armstrong Trust; the Macao Postgraduate Scholarship Fund
description: Funder: UM Macao Fellowship; the Clarendon Scholarship Fund
description: Funder: Baroness de Turckheim Fund, Trinity College Cambridge
description: Funder: the Cambridge Hearing Trust; the Evelyn Trust
description: Cochlear implants restore hearing in patients with severe to profound deafness by delivering electrical stimuli inside the cochlea. Understanding stimulus current spread, and how it correlates to patient-dependent factors, is hampered by the poor accessibility of the inner ear and by the lack of clinically-relevant in vitro, in vivo or in silico models. Here, we present 3D printing-neural network co-modelling for interpreting electric field imaging profiles of cochlear implant patients. With tuneable electro-anatomy, the 3D printed cochleae can replicate clinical scenarios of electric field imaging profiles at the off-stimuli positions. The co-modelling framework demonstrated autonomous and robust predictions of patient profiles or cochlear geometry, unfolded the electro-anatomical factors causing current spread, assisted on-demand printing for implant testing, and inferred patients' in vivo cochlear tissue resistivity (estimated mean = 6.6 kΩcm). We anticipate our framework will facilitate physical modelling and digital twin innovations for neuromodulation implants.
Singlet-triplet dispersion reveals additional frustration in the triangular dimer compound Ba$_3$Mn$_2$O$_8$
Creators: name: Stone, M. B.
name: Lumsden, M. D.
name: Chang, S.
name: Samulon, E. C.
name: Batista, C. D.
name: Fisher, I. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present single crystal inelastic neutron scattering measurements of the S=1 dimerized quasi-two-dimensional antiferromagnet Ba$_3$Mn$_2$O$_8$. The singlet-triplet dispersion reveals nearest-neighbor and next-nearest-neighbor ferromagnetic interactions between adjacent bilayers that compete against each other. Although the inter-bilayer exchange is comparable to the intra-bilayer exchange, this additional frustration reduces the effective coupling along the c-axis and leads to a quasi-two dimensional behavior. In addition, the obtained exchange values are able to reproduce the four critical fields in the phase diagram.
description: 4 pages, 3 color figures, submitted to an APS physical review journal
PV 3.0
Creators: name: Krauter, S.
Publisher: name: WIP
Year: 2012
Subjects: PV - a Major Electricity Source
Markets

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 4520-4522
description: The present change of paradigms provides considerable difficulties to large parts of the PV industry
which grew up with comfortable feed-in tariffs. The step into the new era will open new business models such as
auto-consumption, energy contracting or sales of PV electricity on a public marketplace. Also, combination of PV
power supply with other measures such as energy saving and load curve adaptation will be emerge. The article gives
an overview of the historical development of PV, its application and business models and gives perspectives for PV
electricity, such as an “Ebay”-type trading model and diminution of storage necessities via a global grid set-up.
OP2 bundles in M-theory
Creators: name: Sati, Hisham
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Topology (math.AT)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Ramond has observed that the massless multiplet of eleven-dimensional supergravity can be generated from the decomposition of certain representation of the exceptional Lie group F4 into those of its maximal compact subgroup Spin(9). The possibility of a topological origin for this observation is investigated by studying Cayley plane, OP2, bundles over eleven-manifolds Y. The lift of the topological terms gives constraints on the cohomology of Y which are derived. Topological structures and genera on Y are related to the corresponding ones on the total space M. The latter, being 27-dimensional, might provide a candidate for `bosonic M-theory'. The discussion leads to a connection with an octonionic version of Kreck-Stolz elliptic homology theory.
description: Previous version split into two papers, based on a suggestion by the referee. This first part of 25 pages to appear in CNTP
Reaction Time and Visual Memory in Connection to Hazardous Drinking Polygenic Scores in Schizophrenia, Schizoaffective Disorder and Bipolar Disorder.
Creators: name: Mazumder, Atiqul Haq
name: Barnett, Jennifer
name: Isometsä, Erkki Tapio
name: Lindberg, Nina
name: Torniainen-Holm, Minna
name: Lähteenvuo, Markku
name: Lahdensuo, Kaisla
name: Kerkelä, Martta
name: Ahola-Olli, Ari
name: Hietala, Jarmo
name: Kampman, Olli
name: Kieseppä, Tuula
name: Jukuri, Tuomas
name: Häkkinen, Katja
name: Cederlöf, Erik
name: Haaki, Willehard
name: Kajanne, Risto
name: Wegelius, Asko
name: Männynsalo, Teemu
name: Niemi-Pynttäri, Jussi
name: Suokas, Kimmo
name: Lönnqvist, Jouko
name: Tiihonen, Jari
name: Paunio, Tiina
name: Vainio, Seppo Juhani
name: Palotie, Aarno
name: Niemelä, Solja
name: Suvisaari, Jaana
name: Veijola, Juha
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: cognition
visual memory
reaction time
hazardous drinking
PGS
schizophrenia
schizoaffective disorder
bipolar disorder

description: The purpose of this study was to explore the association of cognition with hazardous drinking Polygenic Scores (PGS) in 2649 schizophrenia, 558 schizoaffective disorder, and 1125 bipolar disorder patients in Finland. Hazardous drinking PGS was computed using the LDPred program. Participants performed two computerized tasks from the Cambridge Automated Neuropsychological Test Battery (CANTAB) on a tablet computer: the 5-choice serial reaction time task, or Reaction Time (RT) test, and the Paired Associative Learning (PAL) test. The association between hazardous drinking PGS and cognition was measured using four cognition variables. Log-linear regression was used in Reaction Time (RT) assessment, and logistic regression was used in PAL assessment. All analyses were conducted separately for males and females. After adjustment of age, age of onset, education, household pattern, and depressive symptoms, hazardous drinking PGS was not associated with reaction time or visual memory in male or female patients with schizophrenia, schizoaffective, and bipolar disorder.
SPICE Simulations of Circumstances at Monolithic Contacts of CdTe Modules Supported by Electroluminescent Measurements
Creators: name: Bokalic, M.
name: Brecl, K.
name: Raguse, J.
name: Zaunbrecher, K.
name: Sites, J.R.
name: Topic, M.
Publisher: name: WIP
Year: 2012
Subjects: Thin Film Solar Cells
CdTe, CIS and Related Ternary and Quaternary Thin Film Solar Cells

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 2222-2225
description: Electroluminescence (EL) is investigated as spatial characterization of cadmium telluride (CdTe)
photovoltaic cells and modules. Acquired EL images are processed in order to extract the actual EL signal radiated
from the module. A spatially distributed model is designed for Simulation Program with Integrated Circuit Emphasis
(SPICE®) simulation framework for electrical simulations. SPICE simulations provide the current density distribution
map which we transform into an EL image. Simulated and measured EL images show good agreement and verify the
proposed SPICE model.
The SPICE model is used for case studies of discontinuities in patterning cuts of monolithic contact. A discontinuity
in patterning cut P2 does not noticeably influence current distribution, as long as it is relatively small. Discontinuities
in patterning cuts P1 and P3 do influence the current distribution across the cell. The discontinuity in P3 is much
more pronounced and may also present a risk of premature failure of the module.
Mid-Infrared Instrumentation for the European Extremely Large Telescope
Creators: name: Kendrew, S.
name: Brandl, B.
name: Lenzen, R.
name: Venema, L.
name: Käufl, H. U.
name: Finger, G.
name: Glasse, A.
name: Stuik, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: MIDIR is the proposed thermal/mid-IR imager and spectrograph for the European Extremely Large Telescope (E-ELT). It will cover the wavelength range of 3 to at least 20 microns. Designed for diffraction-limited performance over the entire wavelength range, MIDIR will require an adaptive optics system; a cryogenically cooled system could offer optimal performance in the IR, and this is a critical aspect of the instrument design. We present here an overview of the project, including a discussion of MIDIR's science goals and a comparison with other infrared (IR) facilities planned in the next decade; top level requirements derived from these goals are outlined. We describe the optical and mechanical design work carried out in the context of a conceptual design study, and discuss some important issues to emerge from this work, related to the design, operation and calibration of the instrument. The impact of telescope optical design choices on the requirements for the MIDIR instrument is demonstrated.
description: for publication in SPIE Proceedings vol. 6692, Cryogenic Optical Systems and Instrumentation XII, eds. J.B. Heaney and L.G. Burriesci, San Diego, Aug 2007
Movimiento Sindicalista Campesino en Chile 1924-2000.
Creators: name: Medel, Rodrigo M.
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 160804 Rural Sociology

description: El presente artículo realiza una revisión histórica y bibliográfica del movimiento campesino sindical en Chile en el siglo XX. A partir de ello, argumenta que la fuerza del movimiento tendrá como variable determinante, en cuanto a sus oportunidades políticas y posterior desarrollo, los procesos de apertura y cierre Estatal. Se pudo identificar 4 etapas o fases respecto a la relación entre Estado y Movimiento Campesino Sindical, que serán el de Formación, Contención, Apertura y Desarticulación. Respaldaremos la existencia de estas etapas con estadísticas sobre tasas de sindicalización y con fuentes documentales e históricas del período. Finalmente viendo las cuatro etapas en su conjunto se plantea una reflexión en torno a las potencialidades del sindicalismo rural en el siglo XXI.
PV Module Parameters Determination for System Simulation
Creators: name: Marzoli, M.
name: Friesen, G.
name: Mermoud, A.
Publisher: name: WIP
Year: 2012
Subjects: Components for PV Systems
PV Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3313-3316
description: Firstly, the increasing diffusion of PV modules based on thin film technologies; secondly, the request by
PV stakeholders for a PV plant simulation which is both fast and accurate (this being crucial for the definition of an
accurate business plan); and thirdly, the need of the PV module producers to have a quick and scalable determination of
parameters: these three conditions have led to carrying out a complete review and implementation of the process for the
PV one-diode model parameter determination, with an interaction between the indoor and outdoor PV measurements of a
crystalline silicon and a micromorph module.
After the stabilization of the thin film module, the first step of the process was the electrical characterization of the
modules with a solar simulator. Then, with the help of a software tool, the one-diode model parameters were determined,
achieving a very good fit between modeled and indoor-measured IV-curves. The following step was the outdoor exposure
of the modules and the validation of the parameters determined, and a general validation of the one-diode model.
The flashfm approach for fine-mapping multiple quantitative traits
Creators: name: Hernández, N
name: Soenksen, J
name: Newcombe, P
name: Sandhu, M
name: Barroso, Ines
name: Wallace, Chris
name: Asimit, Jennifer
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021

description: Joint fine-mapping that leverages information between quantitative traits could improve accuracy and resolution over single-trait fine-mapping. Using summary statistics, flashfm (flexible and shared information fine-mapping) fine-maps signals for multiple traits, allowing for missing trait measurements and use of related individuals. In a Bayesian framework, prior model probabilities are formulated to favour model combinations that share causal variants to capitalise on information between traits. Simulation studies demonstrate that both approaches produce broadly equivalent results when traits have no shared causal variants. When traits share at least one causal variant, flashfm reduces the number of potential causal variants by 30% compared with single-trait fine-mapping. In a Ugandan cohort with 33 cardiometabolic traits, flashfm gave a 20% reduction in the total number of potential causal variants from single-trait fine-mapping. Here we show flashfm is computationally efficient and can easily be deployed across publicly available summary statistics for signals in up to six traits.
description: Wellcome Trust [WT107881]
Characterising solar surface convection using Doppler measurements
Creators: name: Kashyap, Samarth G
name: Hanasoge, Shravan M
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Helioseismic Magnetic Imager (HMI) onboard the Solar Dynamics Observatory (SDO) records line-of-sight Dopplergram images of convective flows on the surface. These images are used to obtain the multi-scale convective spectrum. We design a pipeline to process the raw images to remove large-scale features like differential rotation, meridional circulation, limb shift and imaging artefacts. The Hierarchical Equal Area Pixelization scheme (HEALPix) is used to perform spherical harmonic transforms on the cleaned image. Because we only have access to line-of-sight velocities on half the solar surface, we define a "mixing matrix" to relate the observed and true spectra. This enables the inference of poloidal and toroidal flow spectra in a single step through the inversion of the mixing matrix. Performing inversions on a number of flow profiles, we find that the poloidal flow recovery is most reliable among all the components. We also find that the poloidal spectrum is in qualitative agreement with inferences from Local Correlation Tracking (LCT) of granules. The fraction of power in vertical motions increases as a function of wavenumber and is at 8% level for $\ell = 1500$. In contrast to seismic results and LCT, the flows show nearly no temporal-frequency dependence. Poloidal flow power peaks in the range of $\ell - |m| \approx 150-250$ which may potentially hint at a latitudinal preference for convective flows.
description: 21 pages, 23 figures
Supplementary document for Raman gain control in optical fibers with topologically induced chirality of light - 5811723.pdf
Creators: name: Liu, Xiao
name: Ma, Zelin
name: Antikainen, Aku
name: Ramachandran, Siddharth
Publisher: name: Optica Publishing Group
Year: 2022
Subjects: Uncategorized

description: Supplemetary material
Thin Wafer Thickness Stability in Multi-Wire Saw
Creators: name: Nasch, P.M.
name: Park, J.E.
name: Jodlowski, T.
name: Yin, M.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 1064-1067
description: Economical applications of photovoltaic require constant efforts in the reduction of the crystalline silicon
wafer cost. Approaches for a cost reduction of PV devices are inexpensive raw material sources (e.g. um-Si, remelt,…),
or a better utilization of the raw material for example by cutting thinner wafers (i.e., more wafers per crystal length) and
reducing the loss of raw material during slicing (saw dust or “kerf” loss). Nowadays, the race toward high-efficiency
(+20%), low cost commercial solar cells based on multi- or single-crystal Si technology is mainly focused on thin and
large wafer manufacturing capability. This is because the wafer thickness is an essential cost driver and a pristine
parameter for controlling the efficiency in high-efficiency cell designs. With cell thickness today in the range 180μm-
220μm, and global PV roadmap aiming at even thinner wafers for accrued cost savings, we investigated the capability of
the multi-wire slurry slicing process to further reduce the wafer thickness. In particular, we report on the impact of
decreasing the wafer thickness onto the wafer geometrical characteristics such as Total Thickness Variation (TTV). A
simple first-order model for TTV is presented yielding insights on potential routes to improve the overall wafering yield.
Detection of Emission from the CN Radical in the Cloverleaf Quasar at z=2.56
Creators: name: Riechers, Dominik A.
name: Walter, Fabian
name: Cox, Pierre
name: Carilli, Christopher L.
name: Weiss, Axel
name: Bertoldi, Frank
name: Neri, Roberto
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of CN(N=3-2) emission towards the Cloverleaf quasar (z=2.56) based on observations with the IRAM Plateau de Bure Interferometer. This is the first clear detection of emission from this radical at high redshift. CN emission is a tracer of dense molecular hydrogen gas (n(H2) > 10^4 cm^{-3}) within star-forming molecular clouds, in particular in regions where the clouds are affected by UV radiation. The HCN/CN intensity ratio can be used as a diagnostic for the relative importance of photodissociation regions (PDRs) in a source, and as a sensitive probe of optical depth, the radiation field, and photochemical processes. We derive a lensing-corrected CN(N=3-2) line luminosity of L'(CN(3-2) = (4.5 +/- 0.5) x 10^9 K km/s pc^2. The ratio between CN luminosity and far-infrared luminosity falls within the scatter of the same relationship found for low-z (ultra-) luminous infrared galaxies. Combining our new results with CO(J=3-2) and HCN(J=1-0) measurements from the literature and assuming thermal excitation for all transitions, we find a CO/CN luminosity ratio of 9.3 +/- 1.9 and a HCN/CN luminosity ratio of 0.95 +/- 0.15. However, we find that the CN(N=3-2) line is likely only subthermally excited, implying that those ratios may only provide upper limits for the intrinsic 1-0 line luminosity ratios. We conclude that, in combination with other molecular gas tracers like CO, HCN, and HCO+, CN is an important probe of the physical conditions and chemical composition of dense molecular environments at high redshift.
description: 6 pages, 5 figures, 1 table, to appear in ApJ (accepted May 23, 2007)
High Efficient Battery Storage System
Creators: name: Merz, R.
name: Ziegler, D.
name: Bollmann, B.
name: Seehuber, M.
Publisher: name: WIP
Year: 2012
Subjects: Components for PV Systems
Balance of System Components

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3655-3658
description: Battery storage systems got into focus for future development the past years. The efficiency of such
systems should be close to state of the art PV-systems. Simulation demonstrate adequate discharge efficiencies
h = 95 % for battery voltages VBatt ³ 200 V at an output power PAC > 5 kW. An optimized battery voltage
VBatt = 600 V allows discharge efficiencies h up to h = 98.6 %.
Maestre e maestri nell’Italia che cambia
Creators: name: Sindoni, Caterina
Publisher: name: Gli Argonauti. Rivista di Studi Storico-Educativi e Pedagogici
Year: 2024
Subjects: maestri; Italia unita; Risorgimento; Sicilia

description: Gli Argonauti. Rivista di Studi Storico-Educativi e Pedagogici, Vol 4, No 1 (2024)
Microcavity-like exciton-polaritons can be the primary photoexcitation in bare organic semiconductors.
Creators: name: Pandya, Raj
name: Chen, Richard YS
name: Gu, Qifei
name: Sung, Jooyoung
name: Schnedermann, Christoph
name: Ojambati, Oluwafemi S
name: Chikkaraddy, Rohit
name: Gorman, Jeffrey
name: Jacucci, Gianni
name: Onelli, Olimpia D
name: Willhammar, Tom
name: Johnstone, Duncan N
name: Collins, Sean
name: Midgley, Paul
name: Auras, Florian
name: Baikie, Tomi
name: Jayaprakash, Rahul
name: Mathevet, Fabrice
name: Soucek, Richard
name: Du, Matthew
name: Alvertis, Antonios M
name: Ashoka, Arjun
name: Vignolini, Silvia
name: Lidzey, David G
name: Baumberg, Jeremy
name: Friend, Richard
name: Barisien, Thierry
name: Legrand, Laurent
name: Chin, Alex W
name: Yuen-Zhou, Joel
name: Saikin, Semion K
name: Kukura, Philipp
name: Musser, Andrew J
name: Rao, Akshay
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021

description: Strong-coupling between excitons and confined photonic modes can lead to the formation of new quasi-particles termed exciton-polaritons which can display a range of interesting properties such as super-fluidity, ultrafast transport and Bose-Einstein condensation. Strong-coupling typically occurs when an excitonic material is confided in a dielectric or plasmonic microcavity. Here, we show polaritons can form at room temperature in a range of chemically diverse, organic semiconductor thin films, despite the absence of an external cavity. We find evidence of strong light-matter coupling via angle-dependent peak splittings in the reflectivity spectra of the materials and emission from collective polariton states. We additionally show exciton-polaritons are the primary photoexcitation in these organic materials by directly imaging their ultrafast (5 × 106 m s-1), ultralong (~270 nm) transport. These results open-up new fundamental physics and could enable a new generation of organic optoelectronic and light harvesting devices based on cavity-free exciton-polaritons.
description: EPSRC (EP/R025517/1), EPSRC (EP/M025330/1), ERC Horizon 2020 (grant agreements No 670405 and No 758826), ERC (ERC-2014-STG H2020 639088), Netherlands Organisation for Scientific Research, Swedish Research Council (VR, 2014-06948), Knut and Alice Wallenberg Foundation 3DEM-NATUR (no. 2012.0112), Royal Commission for the Exhibition of 1851, CNRS (France), US Department of Energy, Office of Science, Basic Energy Sciences, CPIMS Program, Early Career Research Program (DE-SC0019188).
Multi-colour photometry and Gaia EDR3 astrometry of two couples of binary clusters (NGC 5617 and Trumpler 22) and (NGC 3293 and NGC 3324)
Creators: name: Bisht, D.
name: Zhu, Qingfeng
name: Yadav, R. K. S.
name: Ganesh, Shashikiran
name: Rangwal, Geeta
name: Durgapal, Alok
name: Sariya, Devesh P.
name: Jiang, Ing-Guey
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This paper presents a comprehensive analysis of two pairs of binary clusters (NGC 5617 and Trumpler 22) and (NGC 3293 and NGC 3324) located in the fourth quadrant of our Galaxy. For this purpose we use different data taken from VVV survey, WISE, VPHAS, APASS, GLIMPSE along with Gaia~EDR3 astrometric data. We identified 584, 429, 692 and 273 most probable cluster members with membership probability higher than 80 % towards the region of clusters NGC 5617, Trumpler 22, NGC 3293 and NGC 3324. We estimated the value of R as ~ 3.1 for clusters NGC 5617 and Trumpler 22, which indicates normal extinction law. The value of R ~ 3.8 and 1.9 represent the abnormal extinction law towards the clusters NGC 3293 and NGC 3324. Our Kinematical analysis show that all these clusters have circular orbits. Ages are found to be 90\pm10 and 12\pm3 Myr for the cluster pairs (NGC 5617 and Trumpler 22) and (NGC 3293 and NGC 3324), respectively. The distances of 2.43\pm0.08, 2.64\pm0.07, 2.59\pm0.1 and 2.80\pm0.2 kpc estimated using parallax are alike to the values calculated by using the distance modulus. We have also identified 18 and 44 young stellar object candidates present in NGC 5617 and Trumpler 22, respectively. Mass function slopes are found to be in fair agreement with the Salpeter's value. The dynamical study of these objects shows a lack of faint stars in their inner regions, which leads to the mass-segregation effect. Our study indicates that NGC 5617 and Trumpler 22 are dynamically relaxed but the other pair of clusters are not. Orbital alongwith the physical parameters show that the clusters in both pairs are physically connected.
description: 21 pages, 20 figures, 7 tables, the article has been accepted for the publication MNRAS
Efficiency Enhancement in Plasmonic IBC Solar Cells
Creators: name: Chaverri Ramos, C.
name: Bellières, L.
name: Connolly, J.P.
name: Ayucar, J.
name: Sánchez, G.
Publisher: name: WIP
Year: 2012
Subjects: Material Studies, New Concepts and Ultra-High Efficiency
New Materials, Cells and Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 371-374
description: Silicon solar cells dominate photovoltaics but suffer from poor interaction with light. This work reports
on progress regarding both spectral conversion and improved light interaction with the LIMA design [1]. This
combines an efficient interdigitated back-contact (IBC) solar cell [2] with a silicon quantum dot (Si-QD) [3] to
optimize the spectral distribution of the incident spectrum, and finally a front-side plasmon layer to optimize light
interaction. Reflectivity after thickness and process optimization for a thin Ag layer and a Si3N4 shows that plasmonic
particle layers reduce reflectivity compared with an IBC with only a Si3N4 anti-reflective coating layer. There is an
increasing of the quantum efficiency in the infrared zone but losses remain in the UV zone which needs to be
addressed.
Dephasing assisted transport: Quantum networks and biomolecules
Creators: name: Plenio, M. B.
name: Huelga, S. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Transport phenomena are fundamental in Physics. They allow for information and energy to be exchanged between individual constituents of communication systems, networks or even biological entities. Environmental noise will generally hinder the efficiency of the transport process. However, and contrary to intuition, there are situations in classical systems where thermal fluctuations are actually instrumental in assisting transport phenomena. Here we show that, even at zero temperature, transport of excitations across dissipative quantum networks can be enhanced by local dephasing noise. We explain the underlying physical mechanisms behind this phenomenon, show that entanglement does not play a supportive role and propose possible experimental demonstrations in quantum optics. We argue that Nature may be routinely exploiting this effect and show that the transport of excitations in light harvesting molecules does benefit from such noise assisted processes. These results point towards the possibility for designing optimized structures for transport, for example in artificial nano-structures, assisted by noise.
Fine Line Metallization through Screen and Stencil Printing
Creators: name: Bottosso, C.
name: Martire, M.
name: Galiazzo, M.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 1645-1647
description: In this paper we investigate how to minimize the metallization costs of the solar cells. We will present
the latest results for Double Printing (DP) metallization process, where contact lines as narrow as 55μm have been
successfully printed. We will also demonstrate that by double printing fine lines, higher conversion efficiency
combined with lower Ag paste laydown is possible. In addition, we introduce stencil printing as a promising
technology to improve finger contact resistivity and we analyze features and benefits of both printing techniques.
MDA5 disease variant M854K prevents ATP-dependent structural discrimination of viral and cellular RNA.
Creators: name: Yu, Qin
name: Herrero Del Valle, Alba
name: Singh, Rahul
name: Modis, Yorgo
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021

description: Our innate immune responses to viral RNA are vital defenses. Long cytosolic double-stranded RNA (dsRNA) is recognized by MDA5. The ATPase activity of MDA5 contributes to its dsRNA binding selectivity. Mutations that reduce RNA selectivity can cause autoinflammatory disease. Here, we show how the disease-associated MDA5 variant M854K perturbs MDA5-dsRNA recognition. M854K MDA5 constitutively activates interferon signaling in the absence of exogenous RNA. M854K MDA5 lacks ATPase activity and binds more stably to synthetic Alu:Alu dsRNA. CryoEM structures of MDA5-dsRNA filaments at different stages of ATP hydrolysis show that the K854 sidechain forms polar bonds that constrain the conformation of MDA5 subdomains, disrupting key steps in the ATPase cycle- RNA footprint expansion and helical twist modulation. The M854K mutation inhibits ATP-dependent RNA proofreading via an allosteric mechanism, allowing MDA5 to form signaling complexes on endogenous RNAs. This work provides insights on how MDA5 recognizes dsRNA in health and disease.
description: Human Frontier Science Program
Photometric and Spectroscopic study of a highly reddened type Ia supernova SN 2003hx in NGC 2076
Creators: name: Misra, Kuntal
name: Sahu, D. K.
name: Anupama, G. C.
name: Pandey, Kavita
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present $UBVRI$ CCD photometry and optical spectra of the type Ia supernova SN 2003hx which appeared in the galaxy NGC 2076, obtained till $\sim$ 146 days after the epoch of $B$ band maximum. The supernova reached at maximum brightness in $B$ band on JD 245 2893 $\pm$ 1.0 with an apparent magnitude of 14.92 $\pm$ 0.01 mag which was estimated by making template fits to the light curves. SN 2003hx is an example of a highly reddened supernova with $E(B-V)$ = 0.56 $\pm$ 0.23. We estimate $R_v$ = 1.97 $\pm$ 0.54 which indicates the small size of dust particles as compared to their galactic counterparts. The luminosity decline rate is $Δm_{15}(B)$ = 1.17 $\pm$ 0.12 mag and the absolute $B$ band magnitude obtained from the luminosity versus decline rate relation (Phillips et al. 1999) is $M^B_{max}$ = -19.20 $\pm$ 0.18 mag. The peak bolometric luminosity indicates that $\sim$ 0.66 $M_\odot$ mass of $^{56}$ Ni was ejected by the supernova. The spectral evolution indicates the supernova to be a normal type Ia event.
description: 16 pages, 21 figures, 5 tables, Accepted for publication in MNRAS
Silicon Nanocrystals for Downshifting Applications: A Preliminary Study
Creators: name: Sgrignuoli, F.
name: Jestin, Y.
name: Moser, E.
name: Ingenhoven, P.
name: Pucker, G.
name: Pavesi, L.
Publisher: name: WIP
Year: 2012
Subjects: Material Studies, New Concepts and Ultra-High Efficiency
New Materials, Cells and Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 375-378
description: Simulation and experimental studies on luminescent down-shifting (LDS) effect based on Si-quantum dots
dispersed in a silicon dioxide matrix are performed. We used a transfer matrix approach to simulate the optical properties
of our structure. In order to take into account the presence of the LDS-layer, we modify the incoming photon flux seen by
the cell, considering the Si-quantum dots absorption and emission with a fixed quantum yield (QY). The estimation of the
Si-quantum dots QY has been performed by photoluminescence decay time measurements. Using the method described
in [4], we find a QY between 25% and 35%.
Magnetoresistance driven by the magnetic Berezinskii-Kosterlitz-Thouless transition
Creators: name: Flebus, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: While the Berezinskii-Kosterlitz-Thouless transition (BKT) has been under intense scrutiny for decades, unambiguous experimental signatures in magnetic systems remain elusive. Here, we investigate the interplay between electronic and magnetic degrees of freedom near the BKT transition. Focusing on a metal with easy-plane ferromagnetic order, we establish a framework that accounts both for the coupling between the charge current and the flow of topological magnetic defects and for electron scattering on their inhomogeneous spin texture. We show that electron scattering is responsible for a temperature-dependent magnetoresistance effect scaling as the density of the topological defects, which is expected to increase dramatically above the BKT transition temperature. Our findings call for further experimental investigations.
Projekt CH+ Games for Democracy. User-Friendly Political Self-Education through Entertainment Design
Creators: name: Sophie, Walker
Publisher: name: gamevironments
Year: 2020

description: Projekt CH+ is a Switzerland-based initiative built on co-design and interdisciplinary exchange. It strives to identify new solutions at the intersection of politics, communication, game design and user experience. Together with voters, political experts and game designers we create an app which uses game mechanics to help users select their ideal candidates during elections. During the 2019 Swiss federal elections, more than 500 people participated in online surveys on feature requests for a gamified solution, which supports users in identifying political candidates that match their personal profile. This data was complemented by 15 testing sessions, where users could interact with a prototype. The received feedback was used to complete the beta-version, which was available as a web-app during cantonal elections in Uri, March 2020. During this first public field test, more than 200 volunteers signed up to test the prototype and 5 school classes participated in an A/B evaluation, where the playful prototype was compared to a traditional electoral support. This report outlines the theoretical framework at the base of the prototype, the most prominent findings of the field research and presents the CH+ Feedback Model, which lies at the centre of the design process. The CH+ app prototype and model are further developed in an iterative process from election to election.
description: gamevironments, No. #13 (2020)
BoS Costs - Status and Optimization to Reach Industrial Grid Parity
Creators: name: Ringbeck, S.
name: Sutterlueti, J.
Publisher: name: WIP
Year: 2012
Subjects: Components for PV Systems
Balance of System Components

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 2961-2975
description: It is essential to have a complete system overview to optimize Photovoltaic Power Plants and minimize Balance of System (BoS)
costs. The approach described here leads to a competitive system solution with lower LCoE (Levelized Cost of Energy).
Recently BoS costs have become more important due to rapidly decreasing PV Module prices. Improvements for mechanical and
electrical BoS costs are validated and benchmarked for PV technologies on a (sub) system level. An example of 30% BoS cost
reduction for TF-Si based on a low voltage design, transformerless inverter and a new Module Mounting Interface (MMI) are
investigated among others. The BoS cost fraction are expected to fall to 55% (TF-Si) and 60% (c-Si) for Ground Mounted Systems
(GMS) between 2010 and 2016 (including efficiency increase). The annual reduction of BoS costs is expected to be in the range of
8 - 9.5%. System costs for GMS and Commercial Roof Top (CRT) plants in Europe and Asia are discussed. In Europe the system
costs dropped from 2.35 €/Wp in 2010 to 1.00 €/Wp in 2016. LCoE reductions based on Sub-BoS optimizations are investigated.
Industrial grid parity is expected in 2012 in Italy (with system costs of 1.34 €/Wp) and 2016 for Germany (system cost 1.07 €/Wp).
BoS costs reductions needed for an LCoE of 0.084 €/kWh (25% below industrial electricity cost, 2016) and the gas parity level
(0.064 €/kWh in 2016) are explored. Evolutionary and revolutionary BoS approaches and cost reductions are discussed to meet these
targets.
Housing demand : an empirical intertemporal model
Creators: name: Schwann, Gregory Michael
Publisher: name: University of British Columbia
Year: 2010

description: I develop an empirical model of housing demand which is based as closely as possible on a theoretical intertemporal model of consumer demand. In the empirical model, intertemporal behavior by households is incorporated in two ways. First, a household's expected length of occupancy in a dwelling is a parameter in the model; thus, households are able to choose when to move. Second, a household's decision to move and its choice of dwelling are based on the same intertemporal utility function. The parameters of the utility function are estimated using a switching regresion model in which the decision to move and the choice of housing quantity are jointly determined. The model has four other features: (1) a characteristics approach to housing demand is taken, (2) the transaction costs of changing dwellings are incorporated in the model, (3) sample data on household mortgages are employed in computing the user cost of owned dwellings, and (4) demographic variables are incorporated systematically into the household utility function. Rosen's two step proceedure is used to estimate the model. Cragg's technique for estimating regressions in the presence of heteroscedasticity of unknown form is used to estimate the hedonic regressions in step one of the proceedure. In the second step, the switching regression model, is estimated by maximum likelihood. A micro data set of 2,513 Canadian households is used in the estimations. The stage one hedonic regressions indicate that urban housing markets are not in long run equilibrium, that the errors of the hedonic regressions are heteroscedastic, and that simple functional forms for hedonic regressions may perform as well as more complex forms. The stage two estimates establish that a tight link between the theoretical and empirical models of housing demand produces a better model. My results show that conventional static models of housing demand are misspecified. They indicate that households have vastly different planned lengths of dwelling occupancy. They also indicate that housing demand is determined to a great extent by demographic factors.
Discovery of higher order QED effect for the vacuum pair production
Creators: name: Zha, Wangmei
name: Tang, Zebo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The higher order quantum electrodynamics (QED) effect for vacuum pair production has been searched without success since 1954. In this paper, we show that the lowest order QED calculations for lepton pair vacuum production in heavy-ion collisions are about 20$\%$ higher than the combined world-wide data with a seven sigma-level of significance and the corresponding higher order QED results are consistent with data. We claim the discovery of higher order effect for the QED pair production, which settles the dust of previous debates for several decades. The verification of higher order QED effect is a fundamental scientific problem, which is an important milestone towards the nonperturbative and nonlinear regime of QED vacuum.
Rear Passivated High Efficiency Solar Cells: Optimization of Aluminum Alloying in Local Contacts by Modifying Paste Formulation
Creators: name: Wijekoon, K.
name: Khatri, H.
name: Tanner, D.
name: Zhang, L.
name: Shaikh, A.
name: Ponnekanti, H.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 608-613
description: Rear passivated point contact solar cells achieving more than 19.3% conversion efficiencies were
developed by using 156x156mm, p-type single crystalline silicon wafers. Full area aluminum back surface field solar
cells, fabricated with the same wafers exhibit only 18.6% conversion efficiency. Eight different specially formulated
aluminum pastes, with varying electrical and surface properties, and varying reactivity of silicon atoms to aluminum
matrix were evaluated. The pastes all contain non-leaded frits and the adhesion strength to the substrate of these
pastes lies in the range from less than 20N to greater than 40N. The thicknesses of the back surface field (BSF)
depend on the firing condition, as well as paste formulation, and range from 3.7μm to 7.5m. The extent of partial
contact fill and cavity formation varied from paste-to-paste; was shown to be largely reduced with optimized firing
conditions. A modified co-firing process was developed for the fabrication of rear local contacts without affecting the
integrity of the front metal contact.