cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ultrafast Spectroscopy of Organic Semiconductors: Singlet Fission and Nonfullerene Acceptors for Organic Photovoltaics
Creators: name: Kim, Vincent Oteyi
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: physics
transient absorption spectroscopy
organic photovoltaics
OPV
singlet fission
nonfullerene
optoelectronics
pentacene
perfluoropentacene
charge transfer state
mediated singlet fission
solar cell
bulk heterojunction

description: In this dissertation, we investigate two emerging strategies for enhancing the performance of organic photovoltaics. The first takes advantage of a process called singlet exciton fission, and the second embodies an exodus from the fullerene electron acceptors prominent in organic solar cells. Indeed, this versatile class of tunable small molecules are aptly termed nonfullerene acceptors. However, both strategies would benefit from a greater understanding of underlying principles. Singlet exciton fission is a photon-multiplying process in which a singlet exciton from a high-energy absorbed photon splits into two triplet excitons. The process could significantly reduce energy lost to heat in photovoltaic devices, but its mechanisms are still misunderstood. One model involves direct coupling between the singlet and triplet states, and another model involves an intermediate charge transfer state. Transient absorption spectroscopy allowed us to examine singlet fission in films of pentacene, fluorinated pentacene, and coevaporated blends of various mixing ratios. We directly observe an intermolecular charge transfer state during singlet fission in solid films of coevaporated pentacene and peruoropentacene, which supports the model of charge transfer state-mediated singlet fission. Furthermore, we successfully induced singlet fission in one blend by directly exciting the charge transfer state below the bandgap. We use various types of steady state and time-resolved spectroscopy to characterize two types of nonfullerene electron acceptors. The first type is a group of tetraazabenzodiuoranthene diimide (BFI) dimers and a BFI monomer. The BFI dimers were designed to have twisted, nonplanar 3-dimensional structures and have helped achieve power conversion efficiencies of over 8% in organic solar cells. The other type of nonfullerene acceptor is a calamitic small molecule, and we consider the BAF-4CN electron acceptor, which has also been used in a solar cell whose efficiency exceeded 8%. Spectroscopic studies give insight into the performances of these nonfullerene devices in relation to fullerene-derivative counterparts. We find that the nonfullerene blends suffer from more geminate charge recombination. However, despite this drawback, in some cases, slower rates of nongeminate recombination may lead to successful power conversion efficiencies in nonfullerene solar cells.
description: Gates Cambridge Trust
QCD spectroscopy with three light quarks
Creators: name: Farchioni, F.
name: Gebert, C.
name: Montvay, I.
name: Schroers, W.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We report about a simulation using three dynamical Wilson quarks and on the progress in going to small quark masses.
description: Lattice2001(spectrum), 3 pages, 4 figures
title: Research report of Mongolia, April-May, 2022
Creators: name: (:Unkn) Unknown
Publisher: name: University of Bayreuth
Year: 2025
Subjects: subject: Arid regions
subject: Weather
subject: COVID-19 Pandemic, 2020-
subject: Livestock
subject: Prices
subject: notes (documents)
subject: Mongolia
subject: Household Income
subject: Lockdown

description: Digital
description: born digital
description: text, doc.
description: 15 kilobytes
The Complexity of Verifying Loop-Free Programs as Differentially Private
Creators: name: Gaboardi, Marco
name: Nissim, Kobbi
name: Purser, David
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Complexity (cs.CC)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: We study the problem of verifying differential privacy for loop-free programs with probabilistic choice. Programs in this class can be seen as randomized Boolean circuits, which we will use as a formal model to answer two different questions: first, deciding whether a program satisfies a prescribed level of privacy; second, approximating the privacy parameters a program realizes. We show that the problem of deciding whether a program satisfies $\varepsilon$-differential privacy is $coNP^{\#P}$-complete. In fact, this is the case when either the input domain or the output range of the program is large. Further, we show that deciding whether a program is $(\varepsilon,δ)$-differentially private is $coNP^{\#P}$-hard, and in $coNP^{\#P}$ for small output domains, but always in $coNP^{\#P^{\#P}}$. Finally, we show that the problem of approximating the level of differential privacy is both $NP$-hard and $coNP$-hard. These results complement previous results by Murtagh and Vadhan showing that deciding the optimal composition of differentially private components is $\#P$-complete, and that approximating the optimal composition of differentially private components is in $P$.
MOESM1 of The role of Acinetobacter baumannii response regulator BfmR in pellicle formation and competitiveness via contact-dependent inhibition system
Creators: name: Krasauskas, Renatas
name: Jūratė Skerniškytė
name: Armalytė, Julija
name: Sužiedėlienė, Edita
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Table S1. Bacterial strains and plasmids used in the study.
Odontomyia ornata
Creators: name: Mason, Franco
name: Rozkošný, Rudolf
name: Hauser, Martin
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Stratiomyidae
Odontomyia
Odontomyia ornata

description: Odontomyia ornata (Meigen, 1822)
 Published records. Sardinia (Bezzi 1892; Mason & Krivosheina 1995; Troiano & Toscano 1997; Rozkošný 2004). Cagliari prov: Assemini, Rio Flumini Manu; Capoterra (Mason 2005). Oristano prov.: Fordongianus (Costa 1883).
 Material examined. Oristano prov.: Arborea, Sant’Anna, 10.VI.2004, L. Fancello leg., 1 ♀ (FMV).
 Distribution. A species widespread in Eurasia (Rozkošný 1982), eastwards to Patara (Turkey), Israel, Syria, Transcaucasia, Transcaspia, Omsk (SW Siberia) and Irkutsk (central Siberia); it appears to be absent in Norway, Finland, Ireland and Corsica (Rozkošný 1982, 2004).
description: Published as part of Mason, Franco, Rozkošný, Rudolf & Hauser, Martin, 2009, A review of the soldier flies (Diptera: Stratiomyidae) of Sardinia *, pp. 507-530 in Zootaxa 2318 on page 522
Polar Codes and Their Quantum-Domain Counterparts
Creators: name: Babar, Zunaira
name: Egilmez, Zeynep B. Kaykac
name: Xiang, Luping
name: Chandra, Daryus
name: Maunder, Robert G.
name: Ng, Soon Xin
name: Hanzo, Lajos
Publisher: name: arXiv
Year: 2019
Subjects: subject: Information Theory (cs.IT)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Arikan's polar codes are capable of achieving the Shannon's capacity at a low encoding and decoding complexity, while inherently supporting rate adaptation. By virtue of these attractive features, polar codes have provided fierce competition to both the turbo as well as the Low Density Parity Check (LDPC) codes, making its way into the 5G New Radio (NR). Realizing the significance of polar codes, in this paper we provide a comprehensive survey of polar codes, highlighting the major milestones achieved in the last decade. Furthermore, we also provide tutorial insights into the polar encoder, decoders as well as the code construction methods. We also extend our discussions to quantum polar codes with an emphasis on the underlying quantum-to-classical isomorphism and the syndrome-based quantum polar codes.
description: 35 pages, accepted for publication in IEEE Communications Surveys and Tutorials
PRODUCTION FRONTIER AND TECHNICAL EFFICIENCY : THE CASE FOR BEEKEEPING FARMS IN MALAYSIA
Creators: name: Habibullah, Muzafar Shah
name: Ismail, Mohd. Mansor
name: Habibullah, Muzafar Shah
name: Ismail, Mohd. Mansor
Publisher: name: Unknown
Year: 1994
Subjects: Production Economics

description: The objective of the present study is to determine the status of technical efficiency for a sample of beekeepers in Malaysia. This is because determining the efficiency status of farmers are very important for policy purposes. Efficiency also is a very important factor of productivity growth. In an economy where resources are scarce and opportunities for new technologies are lacking, inefficiency studies will be able to show that it is possible to raise productivity by improving efficiency without the resource base or developing new technology. Estimates on the extent of inefficiency can help decide whether to improve efficiency or to develop new technologies to raise agricultural productivity. In this study, a Cobb-Douglas production function was employed to beekeeping data. Using the method of Maximum Likelihood Estimation (MLE) procedure, we derived the stochastic frontier production function. The technical efficiency index computed shows a mean efficiency ratio of 0.625 implying that substantial inefficiency exists among the Malaysian beekeepers in the sample under study. Our results indicate that there are great potentials for the beekeepers to further increase output using the available inputs and technology.
Remote Sensing of Antarctic Penguin Populations
Creators: name: Steadman Jones, Matthew
Publisher: name: Apollo - University of Cambridge Repository
Year: 2015

description: Penguins, high trophic-level predators almost exclusively confined to the Southern Ocean, are believed to be particularly susceptible to the unprecedented climatic changes that are currently being experienced in the region. Indeed, the two species of interest to this research, the chinstrap and gentoo penguins, are designated as ‘indicator species’ or sentinels of change within the natural environment by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), the responsible international agency for conserving Antarctic marine life. However, despite the intrinsic role that the species play, there is a dearth of knowledge about even basic demographic and biological aspects (census, distribution, habitat requirements, lifecycles) due, in the main, to the significant environmental and logistical barriers that are presented when considering field surveys within the region. As such, the potential of remote sensing applications and aligned software are beginning to be realised and are proving particularly apt at augmenting the data collected from the more traditional methods of ground-surveys and the laborious counting of species manually from imagery. To test this belief, freely-available ‘open-source’ software was used to design and develop research-specific methodological approaches to provide both population census information and to calculate nesting densities from aerial photography taken of the Cape Shirreff rookery, Livingston Island, the South Shetland Islands; with open-source software explicitly chosen in preference to commercial packages to test the potential of and for such software and the approaches described herein to be used by all, regardless of background and experience. The methodological approaches developed produced very favourable results: for population census, the counts were within 5% of the actual in-situ ground-counts recorded by the US Antarctic Marine Living Resources (US AMLR) programme; whilst nest-to-nest distances and colony density calculations correlated very well with the (admittedly, limited) published data, indicating that the adopted approaches described herein may be reliably utilised for future surveys, albeit with some modifications. Two further, unheralded, revelations emerged: firstly, that nest-to-nest distances of and between the two species increased markedly within congeneric colonies when compared to those colonies where only one species is nesting; whilst, secondly, the colonies are situated within two quite narrow bands within the rookery, leaving a broad swath of ostensibly suitable territory uncolonized. Whilst the reasons are somewhat uncertain, these observations further illustrate the imperative need for a concerted research campaign of appropriate spatio-temporal extent.
A study of top polarization in single-top production at the LHC
Creators: name: Espriu, D.
name: Manzano, J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper complements the study of single top production at the LHC aiming to estimate the sensitivity of different observables to the magnitude of the effective couplings. In a previous paper the dominant $W$-gluon fusion mechanism was considered, while here we extend the analysis to the subdominant (10% with our set of experimental cuts) s-channel process. In order to distinguish left from right effective couplings it is required to consider polarized cross-sections and/or include $m_b$ effects. The spin of the top is accessible only indirectly by measuring the angular distribution of its decay products. We show that the presence of effective right-handed couplings implies necessarily that the top is not in a pure spin state. We discuss to what extent quantum interference terms can be neglected in the measurement and therefore simply multiply production and decay probabilities clasically. The coarsening involved in the measurement process makes this possible. We determine for each process the optimal spin basis where theoretical errors are minimized and, finally, discuss the sensitivity in the s-channel to the effective right-handed coupling. The results presented here are all analytical and include $m_b$ corrections. They are derived within the narrow width approximation for the top.
description: 30 pages, 14 figures
title: Anonymus questionary of Tanzania's Covid19 situation, September 2020
Creators: name: (:Unkn) Unknown
Publisher: name: University of Bayreuth
Year: 2025
Subjects: subject: Food security
subject: Hygiene
subject: Tanzania
subject: Social distancing (Public health)
subject: Mass media
subject: COVID-19 Pandemic, 2020-
subject: Local Understanding
subject: Ecology
subject: FOS: Biological sciences
subject: notes (documents)
subject: Environment
subject: Household Income
subject: Water

description: Digital
description: born digital
description: text, doc.
description: 54 kilobytes
Possible lightest $Ξ$ Hypernucleus with Modern $ΞN$ Interactions
Creators: name: Hiyama, E.
name: Sasaki, K.
name: Miyamoto, T.
name: Doi, T.
name: Hatsuda, T.
name: Yamamoto, Y.
name: Rijken, Th. A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Experimental evidence exists that the $Ξ$-nucleus interaction is attractive. We search for $NNΞ$ and $NNNΞ$ bound systems on the basis of the AV8 $NN$ potential combined with either a phenomenological Nijmegen $ΞN$ potential or a first principles HAL QCD $ΞN$ potential. The binding energies of the three-body and four-body systems (below the $d+Ξ$ and $^3{\rm H}$/$^3{\rm He}+Ξ$ thresholds, respectively) are calculated by a high precision variational approach, the Gaussian Expansion Method. Although the two $ΞN$ potentials have significantly different isospin ($T$) and spin ($S$) dependence, the $NNNΞ$ system with quantum numbers $(T=0, J^π=1^+$) appears to be bound (one deep for Nijmegen and one shallow for HAL QCD) below the $^3{\rm H}$/$^3{\rm He}+Ξ$ threshold. Experimental implications for such a state are discussed.
description: 5 pages, 5 figures, preprint
MOESM1 of Characterisation of Anopheles strains used for laboratory screening of new vector control products
Creators: name: Williams, Jessica
name: Flood, Lori
name: Praulins, Giorgio
name: Ingham, Victoria
name: Morgan, John
name: Lees, Rosemary
name: Ranson, Hilary
Publisher: name: figshare
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Figure S1. Selection (0.05% deltamethrin) data over time. WHO tube bioassay 24 hour % mortality.
PATTERNS AND INTENSITY OF ADOPTION OF THE HYVs OF BORO RICE IN BANGLADESH
Creators: name: Hossain, Shah M. Alamgir
name: Chamala, Shankariah
name: Hossain, Shah M. Alamgir
name: Chamala, Shankariah
Publisher: name: Unknown
Year: 1994
Subjects: Research and Development/Tech Change/Emerging Technologies

description: This paper reports on an investigation concerning patterns and intensity of adoption of the high yielding varieties HYVs) of boro (winter) rice among the opinion leaders and the farmers in a progressive village and in a less progressive village of Bangladesh. In case of the less progressive village, the intensity of adoption of the HYVs of boro rice increased with the increase in the size of the irrigated area. However, for the farmers of the progressive village an opposite pattern of decreased intensity of adoption of the HYVs of boro in relation to the size of the irrigated area was observed. For all the farmers increase in the intensity of adoption of the HYVs of boro rice could be perfectly attributed to the percentage of the irrigated area showing the decisive importance of water in the cultivation of winter rice. The results of stepwise regression combining both the economic and non-economic factors and the economic factors as a set re-established the above finding. However, as a set, the non-economic factors contributed to a various but generally low extent to the explanation of the variance of intensity of adoption of the HYVs of Boro rice.
Hamilton-Jacobi hydrodynamics of pulsating relativistic stars
Creators: name: Westernacher-Schneider, John Ryan
name: Markakis, Charalampos
name: Tsao, Bing Jyun
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The dynamics of self-gravitating fluid bodies is described by the Euler-Einstein system of partial differential equations. The break-down of well-posedness on the fluid-vacuum interface remains a challenging open problem, which is manifested in simulations of oscillating or inspiraling binary neutron-stars. We formulate and implement a well-posed canonical hydrodynamic scheme, suitable for neutron-star simulations in numerical general relativity. The scheme uses a variational principle by Carter-Lichnerowicz stating that barotropic fluid motions are conformally geodesic and Helmholtz's third theorem stating that initially irrotational flows remain irrotational. We apply this scheme in 3+1 numerical general relativity to evolve the canonical momentum of a fluid element via the Hamilton-Jacobi equation. We explore a regularization scheme for the Euler equations, that uses a fiducial atmosphere in hydrostatic equilibrium and allows the pressure to vanish, while preserving strong hyperbolicity on the vacuum boundary. The new regularization scheme resolves a larger number of radial oscillation modes compared to standard, non-equilibrium atmosphere treatments.
description: 24 pgs, 3 figs. Typo fixed. v3: published version. https://doi.org/10.1088/1361-6382/ab93e9
Granular Collapses
Creators: name: Caplan, Joshua Sam
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: granular
granular collapse
granular flow
granular media
collapse
granular segregation
monodisperse
bidisperse

description: The research presented in this thesis concerns the granular collapse problem, where a mass of a granular material is allowed to collapse under its own weight and spread out across a base surface. Whilst this collapse process has been studied in the past, there are a number of potentially important aspects of this problem that have not been fully considered. We start this thesis by repeating previous experiments with the simplest case of a cylindrical mass of a monodisperse material of approximately spherical grains flowing over a horizontal base. By applying new measurement techniques we find differences with previously reported results. We then extend the problem to the bidisperse case by using layers of two types of particles that differ only in their size. We find that, contrary to expectation, there is little segregation of the two species during the collapse. We then return to the monodisperse problem and consider the effects of increasing the initial column aspect ratio beyond the values previously considered. We first use an asymptotic analysis of the possible shapes of the final deposit to find restrictions on the large aspect ratio behaviour of the deposit's maximum height and radius. Finally, we perform monodisperse collapses of a range of materials with aspect ratios of up to 80. We find that the dynamics of the flow and the shape of the final deposit are significantly different in this regime.
description: EPSRC PhD Studentship
Shear-Driven Field-Line Opening and the Loss of a Force-Free Magnetostatic Equilibrium
Creators: name: Uzdensky, Dmitri A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper discusses a quasi-static evolution of a force-free magnetic field under slow sheared footpoint motions on the plasma's boundary, an important problem with applications to the solar and accretion disk coronae. The main qualitative features of the evolution (such as field-line expansion and opening) are considered and a comparison is made between two different geometrical settings: the Cartesian case with translational symmetry along a straight line, and the axisymmetric case with axial symmetry around the rotation axis. The main question addressed in the paper is whether a continuous sequence of force-free equilibria describes the evolution at arbitrarily large values of the footpoint displacement or the sequence ends abruptly and the system exhibits a loss of equilibrium at a finite footpoint displacement. After a formal description of the problem, a review/discussion of the extensive previous work on the subject is given. After that, a series of simple scaling-type arguments, explaining the key essential reason for the main qualitative difference between the two geometry types, is presented. It is found that, in the Cartesian case, force-free equilibria exist at arbitrarily large values of shear and the field approaches the open state only at infinite shear, whereas in the axisymmetric case the field opens up already at a finite shear.
description: AASTEX, 24 pages, 3 figures. Accepted to Astrophysical Journal
Viral and cellular proteins involved in vaccinia virus egress
Creators: name: Gao, William Ning Da
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: Virology
Vaccinia Virus
Cell trafficking

description: Vaccinia virus (VACV) is a large double-stranded DNA virus with a cytoplasmic site of replication. It has a complex life cycle that produces two distinct infectious virion forms, Intracellular Mature Virions (IMVs) and Extracellular Enveloped Virions (EEVs). The host cell microtubule trafficking machinery is hijacked by the virus at three distinct positions of the viral life cycle. After virus entry, the virus cores are transported to pre-nuclear sites where they form viral factories that ultimately produce fully functional and infectious IMVs. A small proportion of IMVs are further transported to sites of wrapping, where they are enveloped by a host-derived double membrane to form Intracellular Enveloped Virions (IEVs). The IEVs are then transported to the cell periphery to facilitate efficient viral spread. The viral proteins A36, F12 and E2 together with the kinesin-1 microtubule motor protein are thought to be involved in IEV egress from the site of wrapping to the cell periphery, although the exact mechanism of movement is unclear. Until recently, A36 was the only known protein to interact with the kinesin-1 motor through kinesin light chain (KLC), but F12 has also been shown to interact with KLC through E2. The precise mechanism of how the IEV interacts with and activates the kinesin-1 motor protein is unclear, and this study explores the interactions of IEV proteins with KLCs in detail, mapping interactions between KLC and A36 or F12/E2. A36, F12 and E2 also show no sequence or predicted structural homology to any other known proteins, and structural studies were performed in an attempt solve their 3D structure. The CRISPR-Cas9 targeted genome editing tool was also utilised to knockout different KLC isoforms in multiple cell lines to assess their contribution to IEV egress as well as cellular trafficking. These studies will provide insight into the mechanisms behind the spatial and temporal control of kinesin motor activity in the cell.
description: MRC full PhD studentship
Oxycera trilineata
Creators: name: Mason, Franco
name: Rozkošný, Rudolf
name: Hauser, Martin
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Stratiomyidae
Oxycera
Oxycera trilineata

description: Oxycera trilineata (Linnaeus, 1767)
 Published record. Nuoro prov.: Siniscola (Costa 1888).
 Remarks. We did not find any recent material from Sardinia although this species very probably still occurs there.
 Distribution. A well known and widely distributed Palaearctic species (Rozkošný 1983, 2004).
description: Published as part of Mason, Franco, Rozkošný, Rudolf & Hauser, Martin, 2009, A review of the soldier flies (Diptera: Stratiomyidae) of Sardinia *, pp. 507-530 in Zootaxa 2318 on page 524
title: Mongolia's Covid19 Questionary, March 2022
Creators: name: (:Unkn) Unknown
Publisher: name: University of Bayreuth
Year: 2025
Subjects: subject: Arid regions
subject: COVID-19 Pandemic, 2020-
subject: Herders
subject: Grazing
subject: notes (documents)
subject: Mongolia

description: Digital
description: born digital
description: text, doc.
description: 23 kilobytes
IRRIGATION AND HOUSEHOLD INCOME : A CASE STUDY OF BANGLADESH
Creators: name: Quasem, Md. Abul
name: Quasem, Md. Abul
Publisher: name: Unknown
Year: 1994
Subjects: Consumer/Household Economics

description: The study is based on a field survey of 1208 households, spread over 62 villages of Bangladesh. The objectives of the study are to analyse the level of household income and its compositions by the intensity of irrigation in a village. The findings show that household income in highly irrigated village is lower than that of low irrigated village which is contrary to our hypothesis. Lower income is mainly due to smaller size of farm by 55 per cent over the low irrigated village. Impact of irrigation is however, clearly visible from higher per acre income (by 36 per cent), facilitated by larger adoption of modern rice. Further, higher household income in low irrigated village is predominantly due to more contribution from non-agricultural sources of income. The factors effecting income are not uniform in all the areas. The two most positive factors are number of non agricultural worker in a family and the household size. Among other factors, availability of electricity in low irrigated village, irrigation in highly irrigated village and institutional credit in medium irrigated village are found positively significant. This suggests that rural development policies should be made as far as possible area specific.
A canonical form for pairs consisting of a Hermitian form and a self-adjoint antilinear operator
Creators: name: Sykes, David
name: Zelenko, Igor
Publisher: name: arXiv
Year: 2019
Subjects: subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 15A21, 15A24, 15B05, 15A22, 32V40

description: Motivated by a problem in local differential geometry of Cauchy--Riemann (CR) structures of hypersurface type, we find a canonical form for pairs consisting of a nondegenerate Hermitian form and a self-adjoint antilinear operator, or, equivalently, consisting of a nondegenerate Hermitian form and a symmetric bilinear form. This generalizes the only previously known results on simultaneous normalization of such pairs, namely, the results of Benedetti and Cragnolini (1984) on simultaneous diagonalization of these pairs in the case where the Hermitian form is positive definite and of Hong and Horn (1986), where a criterion for simultaneous diagonalization is given.
description: 22 pages
OPTIMUM CROPPING PLAN FOR A SAMPLE OF FARMS IN A FARMING SYSTEM RESEARCH AREA OF BANGLADESH.
Creators: name: Uddin, Taj
name: Talukder, R. K.
name: Alam, M. S.
name: Uddin, Taj
name: Talukder, R. K.
name: Alam, M. S.
Publisher: name: Unknown
Year: 1994
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Optimum cropping plan has been developed using data from a sample of 40 farms in a farming system research area of Mymensingh district. The results revealed a considerable divergence between the existing and optimal crop plans under both restricted and unrestricted capital situation. Among the crops incorporated in the optimal plan under restricted capital, Aman (LV) found the prime place in the Kharif-II land under non-irrigated situation, accounting for 33 per cent of the total cropped area. When capital restriction was relaxed, brinjal (summer) was the most dominant crop occupying 39 per cent of total cropped area. The optimal return with unrestricted capital was 49 per cent higher than the existing return from the crop enterprises. The results imply that serious efforts need to be directed to remove credit constraints for improving farm incomes of the typical farms studied in the area.
Hydrodynamically modulated voltammetry in microreactors
Creators: name: Meng, Luwen
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: microreactors
electrochemistry
hydrodynamic modulation

description: This thesis describes modulated methods using both voltammetric and microfluidic perturbations to study mechanisms of electrolysis reactions. The initial chapters provide an overview of applications and research development in the fields of micro-engineering and electrochemistry, including microfabrication methodology, electrochemical detection techniques and analysis methods. Some typical electrochemical reactions have been studied for different kinds of industrial applications. Also hydrodynamic modulation methods have been investigated. The result chapters begin in Chapter 3 with detailed investigation of various electrochemical reactions by using cyclic voltammetry (CV) and large amplitude Fourier transformed alternating current voltammetry (FTACV) under microfluidic conditions. Single electron transfer reactions with different kinetics were studied first by using potassium ferrocyanide and ferrocenecarboxylic acid (FCA). Dual electron transfer reactions with different pathways were investigated by using 2,5-dihydroxybenzoic acid for one step oxidation and N,N,N’,N’-tetramethyl-para-phenylene-diamine (TMPD) for two consecutive one-electron step oxidation. An irreversible reaction was explored by using borohydride solution. Examples of homogeneous reaction mechanisms were studied by using the combinations of Fe(CN)64-/L-cysteine or TMPD/ascorbic acid. The current response of all the electrolysis reactions except single electron transfer reactions was first reported under microfluidic conditions with FTACV, which has shown sensitive with the change of volume flow rates and the substrate concentrations when homogeneous reactions are involved. The linear relationships between peak current and volume flow rates or substrate concentrations can be obtained in every harmonic component. In chapter 4, the modulated technique was applied to microfluidic hydrodynamic systems. A range of electrolysis mechanisms including single electron transfer reactions, dual electron transfer reactions, irreversible reaction and homogeneous reactions were studied under hydrodynamic modulated conditions. The system showed rapid response with the change of volume flow rates during one measurement. The linear relationships between peak current and flow rates, as well as substrate concentrations, can be obtained simultaneously in one scan, which reveals a promising approach to get more information in a short-time measurement. Chapter 5 demonstrated a new protocol by forcing an oscillation of the electrochemical active solution flowing. Analysis of transition time and its effect on limiting current are presented to begin exploration of this new tool for supporting researchers on understanding redox mechanisms. A short simulated study was carried out to help better understand the mechanism under different hydrodynamic conditions.
description: Campus for Research Excellence and Technological Enterprise (CREATE) programme in Singapore
Top FCNC induced by a Z' boson
Creators: name: Cho, Sungwoong
name: Ko, P.
name: Lee, Jungil
name: Omura, Yuji
name: Yu, Chaehyun
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a Z' model where the Z' boson couples only to up and top quarks. As a simple setup, one can consider a family-dependent $U(1)'$ symmetry, under which only right-handed up-type quarks are charged. After symmetry breaking, the right-handed quarks mix with each other and top flavor-changing neutral currents (FCNCs) mediated by the Z' boson can be generated at tree level. We take into account several processes to probe the top FCNCs, and find that the same sign top quark pair production or the triple top quark production is the most capable of testing the top FCNCs. We also consider a few non-FCNC processes to probe the Z' boson, for example, dijet production at the LHC.
description: 21 pages, 11 figures, version published in PRD, detector simulation added
COMPARATIVE ECONOMICS OF DEEP TUBEWELLS WITH LINED AND UNLINED IRRIGATION CHANNELS-A STUDY IN BOGRA DISTRICT OF NORTHERN BANGLADESH
Creators: name: Kundu, Tarun Kanti
name: Jaim, W. M. H.
name: Kundu, Tarun Kanti
name: Jaim, W. M. H.
Publisher: name: Unknown
Year: 1994
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Based on micro level study, the present study is mainly concerned with examining impact of lined channel (concrete) compared to unlined channel (earthen) of Deep Tubeweel (DTW) project. The analysis showed that command areas of the DTWs were on the average increased by 40 per cent and significant increase in productivity of HYV Boro was possible just because of lining of irrigation channel. Although lining of channel involves huge cost, financial analysis showed that due to higher production, DTWs with lined channel were financially more viable compared to those of with unlined channel. To reduce losses fo scarce water, lining of irrigation channel may be suggested but this needs credit facilities, institutional supports to organize the farmers and technical help for constructing the channels.
Existence of a novel metallic ferromagnetic phase in models for undoped manganites
Creators: name: Hotta, Takashi
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The existence of a novel metal-insulator transition in the ferromagnetic state of models for undoped manganites is here discussed using numerical techniques applied to the $e_{\rm g}$-orbital degenerate Hubbard model tightly coupled with Jahn-Teller distortions. The ground-state phase diagram is presented in the plane defined by the electron-phonon coupling $λ$ and Coulomb interaction $u$. In contrast to the standard one-band Hubbard model for cuprates, the metallic phase is found to exist for finite values of both $λ$ and $u$ in the present $e_{\rm g}$-orbital Hubbard model even at half-filling, due to the Fermi-surface topology which is incompatible with the staggered orbital ordering concomitant to the insulating phase. Based on the present results, a possible scenario for Colossal Magneto-Resistive effect is discussed in undoped manganites.
description: 4 pages, Revtex, with 3 figures embedded in the text
title: Angela Kronenburg Garcia's Zoom meeting transcript and report on Kenya, September 15, 2020
Creators: name: (:Unkn) Unknown
Publisher: name: University of Bayreuth
Year: 2025
Subjects: subject: Food security
subject: East Africa
subject: Arid regions
subject: Kenya
subject: Masai
subject: COVID-19 Pandemic, 2020-
subject: transcripts
subject: Livestock

description: Digital
description: born digital
description: text, doc.
description: 19 KB
BORROWER VIABILITY : A TEST OF SUCCESS OF THE GRAMEEN BANK IN BANGLADESH
Creators: name: Elahi, Khandaker Qudrat-I
name: Islam, Md. Faridul
name: Rahman, Khandaker Md. Mostafizur
name: Elahi, Khandaker Qudrat-I
name: Islam, Md. Faridul
name: Rahman, Khandaker Md. Mostafizur
Publisher: name: Unknown
Year: 1994
Subjects: Research and Development/Tech Change/Emerging Technologies

description: The Grameen Bank has earned world-wide reputation. Its performance has been evaluated primarily from the institutional perspective by analysing recovery performance, contribution to rural poverty alleviation etc. This paper examines the performance of the Grameen Bank from the borrower perspective by analysing their viability. Borrower viability is evaluated in this paper in terms of changes in economic welfare. The study shows that the GB has infact enhanced economic welfare of its members. However, the paper observed that the approaches and activities of the GB should be recast in the light of the general strategy of current FFYP to be more successful.
MOESM1 of Transcriptomic analysis associated with reversal of cisplatin sensitivity in drug resistant osteosarcoma cells after a drug holiday
Creators: name: Niveditha, Divya
name: Sharma, Harshita
name: Syamantak Majumder
name: Mukherjee, Sudeshna
name: Rajdeep Chowdhury
name: Shibasish Chowdhury
Publisher: name: figshare
Year: 2019
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Table S1a. List of pathways regulated by key genes shown in Fig. 4b. Table S1b. List of all the differentially regulated genes mentioned in Fig. 4c.
Massless classical electrodynamics
Creators: name: Ibison, Michael
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In the direct action form of classical EM we give the equation of motion for a classical massless bare charge without self-interaction in the presence of an external field. That equation permits superluminal speeds and time-reversals, and so is a realization of the Stueckelberg-Feynman view of electrons and positrons as different segments of a single trajectory. We give a particular solution to a one body problem, and briefly discuss some aspects of the two-body problem. There is some discussion of the historical context of this effort, including the direct action and absorber theories, and some speculation on how the massless bare charge may acquire mass, and how these findings impact the problem of singular self-action.
description: Revised. Accepted for publication in Fizika A
Many-body localization from a one-particle perspective in the disordered 1D Bose-Hubbard model
Creators: name: Hopjan, Miroslav
name: Heidrich-Meisner, Fabian
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We numerically investigate 1D Bose-Hubbard chains with onsite disorder by means of exact diagonalization. A primary focus of our work is on characterizing Fock-space localization in this model from the single-particle perspective. For this purpose, we compute the one-particle density matrix (OPDM) in many-body eigenstates. We show that the natural orbitals (the eigenstates of the OPDM) are extended in the ergodic phase and real-space localized when one enters into the MBL phase. Furthermore, the distributions of occupations of the natural orbitals can be used as measures of Fock-space localization in the respective basis. Consistent with previous studies, we observe signatures of a transition from the ergodic to the many-body localized (MBL) regime when increasing the disorder strength. We further demonstrate that Fock-space localization, albeit weaker, is also evidently present in the distribution of the physical densities in the MBL regime, both for soft- and hardcore bosons. Moreover, the full distribution of the densities of the physical particles provides a one-particle measure for the detection of the ergodic-MBL transition which could be directly accessed in experiments with ultra-cold gases.
description: Final version, 15 pages, 17 figures. Data shown in the manuscript is partially available as ancillary files
Sargus iridatus
Creators: name: Mason, Franco
name: Rozkošný, Rudolf
name: Hauser, Martin
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Stratiomyidae
Sargus
Sargus iridatus

description: Sargus iridatus (Scopoli, 1763)
 Published record. Sardinia (Rozkošný 2004). Sassari prov. (Troiano & Toscano 1997).
 Distribution. A species ranging from Europe to western Siberia and Mongolia (Rozkošný 1983, 2004).
description: Published as part of Mason, Franco, Rozkošný, Rudolf & Hauser, Martin, 2009, A review of the soldier flies (Diptera: Stratiomyidae) of Sardinia *, pp. 507-530 in Zootaxa 2318 on page 525
Dark Matter and Naturalness
Creators: name: Hertzberg, Mark P.
name: Sandora, McCullen
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Standard Model of particle physics is governed by Poincaré symmetry, while all other symmetries, exact or approximate, are essentially dictated by theoretical consistency with the particle spectrum. On the other hand, many models of dark matter exist that rely upon the addition of new added global symmetries in order to stabilize the dark matter particle and/or achieve the correct abundance. In this work we begin a systematic exploration into truly natural models of dark matter, organized by only relativity and quantum mechanics, without the appeal to any additional global symmetries, no fine-tuning, and no small parameters. We begin by reviewing how singlet dark sectors based on spin 0 or spin ${1\over2}$ should readily decay, while pure strongly coupled spin 1 models have an overabundance problem. This inevitably leads us to construct chiral models with spin ${1\over2}$ particles charged under confining spin 1 particles. This leads to stable dark matter candidates that are analogs of baryons, with a confinement scale that can be naturally $\mathcal{O}(100)$TeV. This leads to the right freeze-out abundance by annihilating into massless unconfined dark fermions. The minimal model involves a dark copy of $SU(3)\times SU(2)$ with 1 generation of chiral dark quarks and leptons. The presence of massless dark leptons can potentially give rise to a somewhat large value of $ΔN_{\text{eff}}$ during BBN. In order to not upset BBN one may either appeal to a large number of heavy degrees of freedom beyond the Standard Model, or to assume the dark sector has a lower reheat temperature than the visible sector, which is also natural in this framework. This reasoning provides a robust set of dark matter models that are entirely natural. Some are concrete realizations of the nightmare scenario in which dark matter may be very difficult to detect, which may impact future search techniques.
description: 32 pages, 3 figures. V2: Further clarifications; updated towards version published in JHEP
Prefazione al volume di Rudy Gorian, Autori, bibliotecari, open access, Trento, 2021
Creators: name: Caso, Roberto
Publisher: name: Zenodo
Year: 2021
Subjects: Open Science
Open Access

description: L’esperienza di lavoro e ricerca narrata da Rudj Gorian in questo volume si iscrive nelle azioni dell’Università di Trento dedicate allo sviluppo dell’accesso aperto alle pubblicazioni scientifiche. Il testo viene pubblicato in un momento storico caratterizzato da tre rilevanti fenomeni: (a) il passaggio dall’open access all’open science; (b) il confronto tra due logiche di attuazione dei principî di apertura: no profit e commerciale; (c) l’entrata in scena della pandemia da CoViD-19.
Spin polarizations under a pseudovector interaction between quarks with the Kobayashi-Maskawa-'t Hooft term in high density quark matter
Creators: name: Morimoto, M.
name: Tsue, Y.
name: da Providencia, J.
name: Providencia, C.
name: Yamamura, M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A possibility of a quark spin polarization originated from a pseudovector condensate is investigated in the three-flavor Nambu-Jona-Lasinio model with the Kobayashi-Maskawa-'t Hooft interaction which leads to flavor mixing. It is shown that a pseudovector condensate related to the strange quark easily occurs compared with pseudovector condensate related to light quarks. Further, it is shown that the pseudovector condensate related to the strange quark appears at a slightly small chemical potential by the effect of the flavor mixing due to the Kobayashi-Maskawa-'t Hooft interaction.
description: 14 pages, 14 figures
title: Eduard Gargallo and Jona Heita's transcript, Namibia, May 02, 2022
Creators: name: (:Unkn) Unknown
Publisher: name: University of Bayreuth
Year: 2025
Subjects: subject: Households
subject: Arid regions
subject: Community-based conservation
subject: Namibia
subject: Tourism
subject: FOS: Economics and business
subject: Drylands
subject: COVID-19 Pandemic, 2020-
subject: Mass media
subject: Conservancies
subject: transcripts
subject: Livelihoods
subject: Religious leaders
subject: Vaccination

description: Digital
description: born digital
description: text, doc.
description: 48 kilobytes