cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A third family of super dense stars in the presence of antikaon condensates
Creators: name: Banik, Sarmistha
name: Bandyopadhyay, Debades
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The formation of $K^-$ and $\bar K^0$ condensation in $β$-equilibrated hyperonic matter is investigated within a relativistic mean field model. In this model, baryon-baryon and (anti)kaon-baryon interactions are mediated by the exchange of mesons. It is found that antikaon condensation is not only sensitive to the equation of state but also to antikaon optical potential depth. For large values of antikaon optical potential depth, $K^-$ condensation sets in before the appearance of negatively charged hyperons. We treat $K^-$ condensation as a first order phase transition. The Gibbs criteria and global charge conservation laws are used to describe the mixed phase. Nucleons and $Λ$ hyperons behave dynamically in the mixed phase. A second order phase transition to $\bar K^0$ condensation occurs in the pure $K^-$ condensed phase. Along with $K^-$ condensation, $\bar K^0$ condensation makes the equation of state softer thus resulting in smaller maximum mass stars compared with the case without any condensate. This equation of state also leads to a stable sequence of compact stars called the third family branch, beyond the neutron star branch. The compact stars in the third family branch have different compositions and smaller radii than that of the neutron star branch.
description: 21 pages; RevTex; 5 figures included
Minimization of atomic displacements as a guiding principle of the martensitic phase transformation
Creators: name: Therrien, Félix
name: Stevanović, Vladan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a unifying description for the martensitic transformation of steel that accounts for important experimentally observable features of the transformation namely, the Neumann bands, the interfacial (habit) plane between the transformed and untransformed phases and their orientation relationship (OR). It is obtained through a simple geometric minimization of the total distance traveled by all the atoms from the austenite (FCC or $γ$) phase to the martensite (BCC or $α$) phase, without the need for any explicit energy minimization. Our description unites previously proposed mechanisms but it does not rely on assumptions and experimental knowledge regarding the shear planes and directions, or external adjustable parameters. We show how the Kurdjumov-Sach orientation relationship between the two phases and the $\{225\}_γ$ habit plane, which have both been extensively reported in experiments, naturally emerge from the distance minimization. We also propose an explanation for the occurrence of a different orientation relationship (Pitsch) in thin films.
description: 5 pages, 3 figures
How to Create Artificial Consciousness
Creators: name: Janew, Claus
Publisher: name: Knowledge Commons
Year: 2025
Subjects: subject: Artificial intelligence
subject: Neural networks (Computer science)--Computer simulation
subject: Computer science

description: I would like to convey the idea of how we can create artificial consciousness with free will using the concept of infinitesimality structure. The basic principle is surprisingly simple and has probably already been realized here and there.
IIA string instanton corrections to the four-fermion correlator in the intersection of Del Pezzo surfaces
Creators: name: Cheshel, Andrei
name: Ketov, Sergei V.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Becker-Becker-Strominger formula, describing the string world-sheet instanton corrections to the four-fermion correlator in the Calabi-Yau compactified type-IIA superstrings, is calculated in the special case of the Calabi-Yau threefold realized in the intersection of two Del Pezzo surfaces. We also derive the selection rules in the supersymmetric GUT of the Pati-Salam type associated with our construction.
description: 17 pages, LaTeX, 2 Tables, 1 diagram
Exploiting Global Camera Network Constraints for Unsupervised Video Person Re-identification
Creators: name: Wang, Xueping
name: Panda, Rameswar
name: Liu, Min
name: Wang, Yaonan
name: Roy-Chowdhury, Amit K
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Many unsupervised approaches have been proposed recently for the video-based re-identification problem since annotations of samples across cameras are time-consuming. However, higher-order relationships across the entire camera network are ignored by these methods, leading to contradictory outputs when matching results from different camera pairs are combined. In this paper, we address the problem of unsupervised video-based re-identification by proposing a consistent cross-view matching (CCM) framework, in which global camera network constraints are exploited to guarantee the matched pairs are with consistency. Specifically, we first propose to utilize the first neighbor of each sample to discover relations among samples and find the groups in each camera. Additionally, a cross-view matching strategy followed by global camera network constraints is proposed to explore the matching relationships across the entire camera network. Finally, we learn metric models for camera pairs progressively by alternatively mining consistent cross-view matching pairs and updating metric models using these obtained matches. Rigorous experiments on two widely-used benchmarks for video re-identification demonstrate the superiority of the proposed method over current state-of-the-art unsupervised methods; for example, on the MARS dataset, our method achieves an improvement of 4.2\% over unsupervised methods, and even 2.5\% over one-shot supervision-based methods for rank-1 accuracy.
description: This paper has been accepted to IEEE Transactions on Circuits and Systems for Video Technology (T-CSVT)
МИЛЛИЙ ҲИСОБЛАР ТИЗИМИНИНГ МАКРОИҚТИCОДИЙ КЎРCАТКИЧЛАРИНИ БАҲОЛАШНИНГ УСЛУБИЙ ЖИҲАТЛАРИ
Creators: name: Ғойибназаров, Баҳодир
Publisher: name: Zenodo
Year: 2024

description: Ҳозирги пайтда иқтиcодиётни ўрганиш учун ишлаб чиқилаётган ва фойдаланилаётган макроиқтиcодий моделлар ораcида эконометрик моделлар муҳим ўрин эгаллайди. Иқтиcодий ҳодиcалар, қоида кўра, бир вақтнинг ўзида кўп cонли ва умумий амал қиладиган омиллар билан белгиланади. Шу муноcабат билан кўпинча битта ўзгарувчининг бир нечта изоҳловчи ўзгарувчига боғлиқлигини тадқиқ этиш вазифаcи юзага келади. Бу вазифа кўп ўлчовли регреccия таҳлили ёрдамида ҳал этилади.
Framework for simulating gauge theories with dipolar spin systems
Creators: name: Luo, Di
name: Shen, Jiayu
name: Highman, Michael
name: Clark, Bryan K.
name: DeMarco, Brian
name: El-Khadra, Aida X.
name: Gadway, Bryce
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Gauge theories appear broadly in physics, ranging from the standard model of particle physics to long-wavelength descriptions of topological systems in condensed matter. However, systems with sign problems are largely inaccessible to classical computations and also beyond the current limitations of digital quantum hardware. In this work, we develop an analog approach to simulating gauge theories with an experimental setup that employs dipolar spins (molecules or Rydberg atoms). We consider molecules fixed in space and interacting through dipole-dipole interactions, avoiding the need for itinerant degrees of freedom. Each molecule represents either a site or gauge degree of freedom, and Gauss law is preserved by a direct and programmatic tuning of positions and internal state energies. This approach can be regarded as a form of analog systems programming and charts a path forward for near-term quantum simulation. As a first step, we numerically validate this scheme in a small-system study of U(1) quantum link models in (1+1) dimensions with link spin S = 1/2 and S = 1 and illustrate how dynamical phenomena such as string inversion and string breaking could be observed in near-term experiments. Our work brings together methods from atomic and molecular physics, condensed matter physics, high-energy physics, and quantum information science for the study of nonperturbative processes in gauge theories.
Space-Adiabatic Perturbation Theory
Creators: name: Panati, Gianluca
name: Spohn, Herbert
name: Teufel, Stefan
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81Q05, 81Q15

description: We study approximate solutions to the Schrödinger equation $i\epsi\partialψ_t(x)/\partial t = H(x,-i\epsi\nabla_x) ψ_t(x)$ with the Hamiltonian given as the Weyl quantization of the symbol $H(q,p)$ taking values in the space of bounded operators on the Hilbert space $\Hi_{\rm f}$ of fast ``internal'' degrees of freedom. By assumption $H(q,p)$ has an isolated energy band. Using a method of Nenciu and Sordoni \cite{NS} we prove that interband transitions are suppressed to any order in $\epsi$. As a consequence, associated to that energy band there exists a subspace of $L^2(\mathbb{R}^d,\Hi _{\rm f})$ almost invariant under the unitary time evolution. We develop a systematic perturbation scheme for the computation of effective Hamiltonians which govern approximately the intraband time evolution. As examples for the general perturbation scheme we discuss the Dirac and Born-Oppenheimer type Hamiltonians and we reconsider also the time-adiabatic theory.
description: 49 pages
Dairy Farm Management Business Summary New York State 2005
Creators: name: Knoblauch, Wayne A.
name: Putnam, Linda D.
name: Karszes, Jason
name: Knoblauch, Wayne A.
name: Putnam, Linda D.
name: Karszes, Jason
Publisher: name: Unknown
Year: 2006
Subjects: subject: Livestock Production/Industries
subject: BUSINESS ANALYSIS
subject: DAIRY MANAGEMENT
subject: FARM BUSINESS SUMMARY
subject: NEW YORK FARMS

description: Business and financial records for 2005 from 225 New York dairy farm businesses are summarized and analyzed. This analysis demonstrates the use of cash accounting with accrual adjustments to measure farm profitability, financial performance, and costs of producing milk. Traditional methods of analyzing dairy farm businesses are combined with evaluation techniques that show the relationship between good management performance and financial success. The farms in the project averaged 340 cows per farm and 22,998 pounds of milk sold per cow, which represent above average size and management level for New York dairy farms. Net farm income excluding appreciation, which is the return to the operator's labor, management, capital, and other unpaid family labor, averaged $187,446 per farm. The rate of return to all capital invested in the farm business including appreciation averaged 10.7 percent. Differences in profitability between farms continue to widen. Average net farm income excluding appreciation of the top 10 percent of farms was $838,892, while the lowest 10 percent was a negative $23,283. Rates of return on equity with appreciation ranged from 35 percent to negative 10 percent for the highest decile and the lowest decile of farms, respectively. Large freestall farms averaged the highest milk output per cow and per worker, the lowest total cost of production and investment per cow, and the greatest returns to labor, management and capital. Farms milking three times a day (3X) were larger, produced more milk per cow and had higher net farm incomes than herds milking two times per day (2X). Operating costs per hundredweight of milk were $0.28 per hundredweight higher for 3X than 2X milking herds, while output per cow was 3,787 pounds higher. In 2005, farms supplementing the herd with bovine somatotropin (bST) attained higher rates of milk production per cow, had larger herds and were more profitable than farms not supplementing with bST for all measures of profitability. Farms adopting rotational grazing generally produced less milk per cow than non-grazing farms but had lower costs of production and higher profitability. One should not conclude that adoption of these technologies alone were responsible for differences in performance.
Observation of B0bar --> D0 K0bar and B0bar --> D0 K*0bar decays
Creators: name: Krokovny, P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report on a search for B0bar --> D0 K(*)0bar decays based on 85 10^6 BBar events collected with the Belle detector at KEKB. The B0bar --> D0 K0bar and B0bar --> D0 K*0bar decays have been observed for the first time with the branching fractions Br(B0bar --> D0 K0bar) = (5.0^{+1.3}_{-1.2}+- 0.6) 10^{-5} and Br(B0bar --> D0 K*0bar) = (4.8^{+1.1}_{-1.0}+- 0.5) 10^{-5}. No significant signal has been found for the B0bar --> D*0 K(*)0bar and B0bar --> D(*)0bar K*0bar decay modes, and upper limits at 90% CL are presented.
description: submitted to Phys. Rev. Lett
The Effects of Participation in High School Athletics and the National Honor Society on Future Earnings
Creators: name: Gius, Mark P.
name: Gius, Mark P.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Institutional and Behavioral Economics
subject: Research and Development/Tech Change/Emerging Technologies
subject: Research Methods/ Statistical Methods
subject: Athletic Participation
subject: Future Earnings

description: The purpose of the present study is to determine the effects of two select types of high school extracurricular activities on future earnings: athletics and the National Honor Society. Utilizing data from the 1979 National Longitudinal Survey of Youth and a two-stage least squares estimation technique, the results of the present study indicate that high school athletes earn more in later years than honor society students. In fact, after controlling for academic achievement, honor society students earned no more in later years than non-honor society students. Finally, in examining the impact of participation in extra-curricular activities on future earnings, results of the present study suggest that participation in such activities increases earnings later in life.
Additional file 2 of INFIMA leverages multi-omics model organism data to identify effector genes of human GWAS variants
Creators: name: Dong, Chenyang
name: Simonett, Shane P.
name: Shin, Sunyoung
name: Stapleton, Donnie S.
name: Schueler, Kathryn L.
name: Churchill, Gary A.
name: Lu, Leina
name: Liu, Xiaoxiao
name: Jin, Fulai
name: Li, Yan
name: Attie, Alan D.
name: Keller, Mark P.
name: Keleş, Sündüz
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2 Review history
Hunting for fermionic instabilities in charged AdS black holes
Creators: name: Dias, Oscar J. C.
name: Masachs, Ramon
name: Papadoulaki, Olga
name: Rodgers, Paul
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Fermions scattering on a black hole background cannot develop an instability sourced by superradiance. However, in a global (or planar) AdS$_4$-Reissner-Nordström background fermions can violate the AdS$_2$ fermionic mass stability bound as measured by a near horizon observer at zero temperature. This suggests that AdS-Reissner-Nordström black holes might still be unstable to Dirac perturbations. Motivated by this observation we search for linear mode instabilities of Dirac fields in these backgrounds but find none. This is in contrast with the scalar field case, where a violation of the near-horizon Breitenlöhner-Freedman stability bound in the AdS-Reissner-Nordström background triggers the already known scalar condensation near-horizon linear instability (in the planar limit this is Gubser's instability that initiated the holographic superconductor programme). We consider both the standard and alternative AdS/CFT quantizations (that preserve the conformal invariance of AdS). These are reflective boundary conditions that have vanishing energy flux at the asymptotic boundary.
description: 55 pages, 12 figures. v2: improvements in some discussions made and subsection moved to appendix. Matches published version
Phraepsyche Malicky & Chantaramongkol
Creators: name: Oláh, János
name: Johanson, Kjell Arne
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Odontoceridae
Phraepsyche

description: Phraepsyche Malicky & Chantaramongkol
 Phraepsyche Malicky & Chantaramongkol in Malicky et al. 2000: 865.
 Type species: Phraepsyche danaos Malicky & Sompong in Malicky et al. 2000. Original designation by monotypy.
 Type locality: Thailand.
 Malicky et al. (2000) described this genus based on a single species from Thailand. We describe 2 more species below, as well as give the following 2 additional characters to the genus diagnosis: (1) pectination of the antennae; and (2) presence of a sternal projection on the posterior margins of abdominal segment VI. All 3 species known in the genus have relatively uniform genitalia. There are significant differences among the species both in the groove and setal wart patterns on the head and on the thorax. The genitalia generally resemble those of species in the genera Marilia and Odontocerum, from which Phraepsyche species are easily distinguished mostly by forewing venation characters and presence of mesally claw-like and subapically located harpagones. The pectinate antennae being characteristic for this genus are present also in the Australian philorheithrid genus Ramiheithrus Neboiss, 1974. However, each antennal pecten of Ramiheithrus is directed mesad while in Phraepsyche it is directed laterad; and each pecten unit appears being of epidermal origin, not setal origin as in Ramiheithrus. The pectinate antennae were not mentioned in the original genus description of Phraepsyche, probably because they were lost. Pectination possibly developed from elongated setae because all branches originate from alveoli formed by a skeletal ring and rim, and from setal theca. Similarly to setae, this antennal pectination can be easily detached, but the alveoli remain visible. The pectinal branches on the first and second segments of the flagellae are very short. The well-developed, long and robust sternal projection (hammer) on the posterior margin of segment VI is only present in the males. In other families, like Rhyacophilidae, Glossosomatidae, Hydroptilidae and Philopotamidae, this structure might be used for substrate-born vibration communication. Such behavious has previously not been reported for any leptoceroid species.
description: Published as part of Oláh, János & Johanson, Kjell Arne, 2010, Description of 33 new species of Calamoceratidae, Molannidae, Odontoceridae and Philorheithridae (Trichoptera), with detailed presentation of their cephalic setal warts and grooves 2457, pp. 1-128 in Zootaxa 2457 (1) on page 113, DOI: 10.11646/zootaxa.2457.1.1, http://zenodo.org/record/5313709
Wireless Communications with Reconfigurable Intelligent Surface: Path Loss Modeling and Experimental Measurement
Creators: name: Tang, Wankai
name: Chen, Ming Zheng
name: Chen, Xiangyu
name: Dai, Jun Yan
name: Han, Yu
name: Di Renzo, Marco
name: Zeng, Yong
name: Jin, Shi
name: Cheng, Qiang
name: Cui, Tie Jun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Reconfigurable intelligent surfaces (RISs) comprised of tunable unit cells have recently drawn significant attention due to their superior capability in manipulating electromagnetic waves. In particular, RIS-assisted wireless communications have the great potential to achieve significant performance improvement and coverage enhancement in a cost-effective and energy-efficient manner, by properly programming the reflection coefficients of the unit cells of RISs. In this paper, free-space path loss models for RIS-assisted wireless communications are developed for different scenarios by studying the physics and electromagnetic nature of RISs. The proposed models, which are first validated through extensive simulation results, reveal the relationships between the free-space path loss of RIS-assisted wireless communications and the distances from the transmitter/receiver to the RIS, the size of the RIS, the near-field/far-field effects of the RIS, and the radiation patterns of antennas and unit cells. In addition, three fabricated RISs (metasurfaces) are utilized to further corroborate the theoretical findings through experimental measurements conducted in a microwave anechoic chamber. The measurement results match well with the modeling results, thus validating the proposed free-space path loss models for RIS, which may pave the way for further theoretical studies and practical applications in this field.
description: Accepted by IEEE Transactions on Wireless Communications. On the Path Loss of Reconfigurable Intelligent Surfaces-Assisted Wireless Communications: Modeling and Experimental Assessment
Non-Abelian Born-Infeld Action and Type I - Heterotic Duality (II): Nonrenormalization Theorems
Creators: name: Stieberger, S.
name: Taylor, T. R.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Type I - heterotic duality in D=10 predicts various relations and constraints on higher order F^n couplings at different string loop levels on both sides. We prove the vanishing of two-loop corrections to the heterotic F^4 terms, which is one of the basic predictions from this duality. Furthermore, we show that the heterotic F^5 and (CP even) F^6 couplings are not renormalized at one loop. These results strengthen the conjecture that in D=10 any Tr F^(2n) coupling appears only at the disc tree-level on type I side and at (n-1)-loop level on the heterotic side. Our non-renormalization theorems are valid in any heterotic string vacuum with sixteen supercharges.
description: 35 pages, harvmac; cosmetic changes; final version to appear in NPB
r-Process in Prompt Supernova Explosions Revisited
Creators: name: Sumiyoshi, K.
name: Terasawa, M.
name: Mathews, G. J.
name: Kajino, T.
name: Yamada, S.
name: Suzuki, H.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We reanalyze $r$-process nucleosynthesis in the neutron-rich ejecta from a prompt supernova explosion of a low-mass (11 M$_\odot$) progenitor. A pompt explosion is not yet ruled out as a possibility for low-mass supernova progenitors. Moreover, there is mounting evidence that a new $r$-process site may be required. Hence, we assume that a prompt explosion can occur and make a study of r-process nucleosynthesis in the supernova ejecta. To achieve a prompt explosion we have performed a general relativistic hydrodynamic simulation of adiabatic collapse and bounce using a relativistic nuclear-matter equation of state. The electron fraction $Y_e$ during the collapse was fixed at the initial-model value. The size of the inner collapsing core was then large enough to enable a prompt explosion to occur. Adopting the calculated trajectories of promptly ejected material, we explicitly computed the burst of neutronization due to electron captures on free protons in the photodissociated ejecta after the passage of the shock. The thermal and compositional evolution of the resulting neutron-rich ejecta originating from near the surface of proto-neutron star was obtained. These were used in nuclear reaction network calculations to evaluate the products of $r$-process nucleosynthesis. We find that, unlike earlier studies, the amount of $r$-process material ejected per supernova is quite consistent with observed galactic $r$-process abundances. Furthermore, the computed $r$-process abundances are in good agreement with Solar abundances of $r$-process elements for A$> 100$. This suggests that prompt supernovae are still a viable $r$-process site. Such events may be responsible for the abundances of the heaviest $r$-process nuclei.
description: 13 pages, 8 figures, ApJ in press. Minor revisions as per referee's suggestions
Airline fleets and registration of East Africa Countries focused on Somalia.
Creators: name: Abdirahman, Hassan Abdillahi
Publisher: name: Zenodo
Year: 2025
Subjects: Airline fleets
registration of East Africa Countries

description: The aviation industry is a huge and intricate sector that includes all facets of air travel, including the design, production, use, and regulation of aircraft. It is critical to global transportation since it connects people and goods all over the world. The essential components and dynamics of the aviation industry are briefly described in this overview:

Global History: The aviation business has a long history that stretches back to the Wright Brothers' first powered flight in 1903, which gave rise to the field. Aviation has advanced dramatically since then, from biplanes to modern jet aircraft and missions to Mars.

Key Players: The business is home to a variety of key players, including commercial airlines, freight carriers, aircraft manufacturers, and airports. Companies like American Airlines, Delta Air Lines, and Emirates are major players in the airline industry. Boeing and Airbus are the main aircraft manufacturers, and FedEx and UPS are prominent freight carriers.

Aviation Types: Aviation is divided into various categories, including commercial aviation, general aviation, military aviation, and space exploration. Commercial aircraft primarily transports passengers and freight, whereas general aviation includes private, business, and leisure flying. The history of the aviation sector in the nations of Eastern Africa has shaped the contemporary environment. This historical backdrop is critical for comprehending the significance and urgency of our research into airline fleets and aircraft registrations in the region.

In the early twentieth century, aviation in Eastern Africa was characterized by daring pioneers flying in primitive aircraft. A structured aircraft sector was not as prevalent during this period, but rather an experimental spirit. These pioneering aviators laid the groundwork for a prosperous industry later.
Economic Efficiency of Rice Productionin Smallholder Irrigation Schemes: A Case of Nkhate Irrigation Scheme in Southern Malawi
Creators: name: Magreta, Ruth
name: Magreta, Ruth
Publisher: name: Unknown
Year: 2011
Subjects: Agricultural and Food Policy
Farm Management
International Development

description: This study used a parametric frontier approach to analyze technical, allocative and economic efficiency of smallholder rice farmers. It further explored the factors that influence the efficiency levels of the rice farmers. The study used a trans-log stochastic production function to analyze the technical efficiency. It used the trans-log cost frontier to analyze the economic efficiency. Results from these efficiencies led to the derivation of the allocative efficiency levels. It further used the inefficiency model to analyze the factors underlying efficiency differentials among the sampled farming households. Results revealed an average technical, allocative and economic efficiency levels of 65%, 59% and 53% respectively. This suggests that farmers have a rice yield potential of 35% to be exploited. The average economic efficiency level entails that farmers can raise their profitability or rice production by 47% by adjusting input use. Soil fertility status, access to credit, household size and farmers experience were the factors that influence the efficiency levels of smallholder rice farmers. It is thus recommended that for improved efficiency levels there is need for better policies and strategies that address input and output markets. Furthermore, farmer groups or associations can play a great role in ensuring that farmers get relevant technical advice, credit access as well as learn and share knowledge from each other.
Analysis of Effectiveness of Modern Information and Communication Technologies on Maize Marketing Efficiency in Lilongwe and Dedza Districts and Selected Markets of Malawi
Creators: name: Tione, Sarah Ephridah
name: Tione, Sarah Ephridah
Publisher: name: Unknown
Year: 2011
Subjects: Agricultural and Food Policy
Farm Management
International Development

description: Government of Malawi has been promoting initiatives like Malawi Agriculture Commodity Exchange (MACE) that aim at reducing information asymmetry among market players especially smallholder farmers. Using co-integration error correction models, the study assessed effectiveness of modern ICT based market interventions on improving maize marketing efficiency in Malawi. Considering that efficient markets are integrated markets when price difference is only a factor of transaction costs, TAR models assessed price transmission speed in pre – ICT and post – ICT periods. Using logit model, the study further identified socioeconomic factors influencing use of modern ICTs among smallholder farmers. Of the sampled households, only 18 percent used modern ICTs because of high initial capital cost, illiteracy and lack of awareness on the modern ICTs. Based on the logit model results, the significant socioeconomic factors that highly influenced use of modern ICTs were physical asset wealth and gender of the household head. The spatial integration results show that markets in Malawi were integrating. The results of TAR models in pre – ICT and post – ICT periods show that ICT based market interventions have positively influenced market integration and price transmission. Thus, modern ICTs have contributed to the reduction of search transaction costs leading to improved marketing efficiency. Based on the results, the study recommends the need to increase awareness on ICT based market interventions to all gender groups and to improve market infrastructure in the country.
Anwendungsbeispiele für dampferzeugende Wärmepumpen (Technology Talk)
Creators: name: Dusek, Sabrina
name: NEFI New Energy for Industry
Publisher: name: NEFI New Energy for Industry
Year: 2025
Subjects: NEFI
Innovationsnetzwerk
Energie
Industrie
New Energy for Industry
Klima- und Energiefonds
Vorzeigeregion
Industrielle Abwärmenutzung
Hochtemperatur-Wärmepumpen
Dampferzeugende Wärmepumpen

description: Der NEFI Technology Talk zum Thema "Industrielle Abwärmenutzung mit Hochtemperaturwärmepumpen" am 3. April 2024 war ein voller Erfolg. Rund 90 Teilnehmer*innen kamen zusammen, um sich über die neuesten Entwicklungen und Herausforderungen in diesem Bereich auszutauschen. In dieser dynamischen Online-Veranstaltung, moderiert von unserer NEFI-Expertin Veronika Wilk (Thematic Coordinator Efficiency in Industrial Processes and Systems, AIT Austrian Institute of Technology), traf ein vielfältiges und engagiertes Publikum aufeinander.

Lösungen zur Nutzung industrieller Abwärme mit Hochtemperaturwärmepumpen standen im Mittelpunkt dieses NEFI Technology Talks und somit den Wissensstand der Teilnehmenden bezüglich Hochtemperaturwärmepumpen zu erhöhen.

Sabrina Dusek, Projektleiterin LEAP, am AIT, Center for Energy, stellte zwei Anwendungsbeispiele für dampferzeugende Wärmepumpen vor, die im Rahmen ihres NEFI-Projekts LEAP - Low Pressure Steam Heat Pump analysiert wurden. Dabei wurde die Amortisationszeit unter Berücksichtigung verschiedener Einflussfaktoren untersucht.
Granular Aluminum Meandered Superinductors for Quantum Circuits
Creators: name: Kamenov, Plamen
name: Lu, Wen-Sen
name: Kalashnikov, Konstantin
name: DiNapoli, Thomas
name: Bell, Matthew T.
name: Gershenson, Michael E.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have designed superinductors made of strongly disordered superconductors for implementation in "hybrid" superconducting quantum circuits. The superinductors have been fabricated as meandered nanowires made of granular Aluminum films. Optimization of the device geometry enabled realization of superinductors with the inductance $\sim 1 μH$ and the self-resonance frequency over 3 GHz. These compact superinductors are attractive for a wide range of applications, from superconducting circuits for quantum computing to microwave elements of cryogenic parametric amplifiers and kinetic-inductance photon detectors.
description: 5 pages, 4 figures; accepted manuscript, to be published in Phys. Rev. Appl
Cost Benefit Analysis of Climate Change Adaption Strategies on Crop Production Systems: A Case of Mpolonjeni Area Development Programme (ADP) in Swaziland
Creators: name: Shongwe, Phindile
name: Shongwe, Phindile
Publisher: name: Unknown
Year: 2013
Subjects: Agricultural and Food Policy
Demand and Price Analysis

description: The study is a descriptive survey done at Mpolonjeni ADP which is a representative sample for the project as it is affected by climate change and variability. This is evident as there is high level of food insecurity, crop failure, poverty and hunger Mpolonjeni ADP. The increased involvement of food relief agencies nearly on an annual basis is a clear indication that agricultural production, the mainstay of the areas has drastically fallen, and households’ livelihoods are at risk. The objectives of the study were to identify the impact of climate change on crop production, identify private adaptation strategies, conduct a cost benefit analysis for the adaptation strategies identified and identify socioeconomic factors influencing the choice of households when adapting to climate change. Sample was randomly selected and personal interviews were conducted. Data were analysed using descriptive statistics, Ricardian regression model, cost benefit analysis and multinomial logistic model. The results indicated that temperatures are increasing and rainfall is decreasing and this reduces maize yields. Adaptation strategies used are; drought resistant varieties, switching crops, irrigation, crop rotation, mulching, minimum tillage, early planting, late planting and intercropping. Switching crops has the highest NPV, where maize (E14.40) should be substituted with drought tolerant crops such as cotton (E1864.40), sorghum (E283.30) and dry beans (292.20). Factors influencing the choice of adaptation were; age of household head, occupation of household head, belonging to a social group , land category , access to credit, access to extension services training, high incidences of crop pest and disease, high input prices, high food prices, perceptions of households towards climate change. From the results, it is recommended that households should grow drought tolerant crops such as cotton, sorghum and dry beans instead of maize. The government should provide irrigation system, strengthen extension services and subsidise inputs. Further studies should analyse by CEA and MCA.
Improving Polyphonic Music Models with Feature-Rich Encoding
Creators: name: Peracha, Omar
Publisher: name: arXiv
Year: 2019
Subjects: subject: Sound (cs.SD)
subject: Machine Learning (cs.LG)
subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 68T99

description: This paper explores sequential modelling of polyphonic music with deep neural networks. While recent breakthroughs have focussed on network architecture, we demonstrate that the representation of the sequence can make an equally significant contribution to the performance of the model as measured by validation set loss. By extracting salient features inherent to the training dataset, the model can either be conditioned on these features or trained to predict said features as extra components of the sequences being modelled. We show that training a neural network to predict a seemingly more complex sequence, with extra features included in the series being modelled, can improve overall model performance significantly. We first introduce TonicNet, a GRU-based model trained to initially predict the chord at a given time-step before then predicting the notes of each voice at that time-step, in contrast with the typical approach of predicting only the notes. We then evaluate TonicNet on the canonical JSB Chorales dataset and obtain state-of-the-art results.
description: Proceedings of the 21st International Society for Music Information Retrieval Conference, ISMIR 2020
The X-ray virial relations for relaxed lensing clusters observed with Chandra
Creators: name: Allen, S. W.
name: Schmidt, R. W.
name: Fabian, A. C.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the relations linking mass, X-ray temperature and bolometric luminosity for a sample of luminous, relatively relaxed clusters of galaxies observed with the Chandra Observatory, for which independent confirmation of the mass results is available from gravitational lensing studies. Within radii corresponding to a fixed overdensity Delta = 2500 with respect to the critical density at the redshifts of the clusters, the observed temperature profiles, scaled in units of T_2500 and r_2500, exhibit an approximately universal form which rises within r~0.3 r_2500 and then remains approximately constant out to r_2500. We obtain best-fit slopes for the mass-temperature and temperature-luminosity relations consistent with the predictions from simple scaling arguments i.e. M_2500 \propto T_2500^{3/2} and L_2500 \propto T_2500^{2}, respectively. We confirm the presence of a systematic offset of ~40 per cent between the normalizations of the observed and predicted mass-temperature relations for both SCDM and LambdaCDM cosmologies.
description: 6 pages, 4 figs, 3 tables. Accepted for publication in MNRAS Letters
Psilotreta locumtenens Botosaneanu 1970
Creators: name: Oláh, János
name: Johanson, Kjell Arne
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Odontoceridae
Psilotreta
Psilotreta locumtenens

description: Psilotreta locumtenens Botosaneanu
 Psilotreta locumtenens Botosaneanu, 1970: 313.
 Ganonema odaenum Kobayashi, 1989, new synonym.
 Type locality: Democratic People's Republic of Korea.
description: Published as part of Oláh, János & Johanson, Kjell Arne, 2010, Description of 33 new species of Calamoceratidae, Molannidae, Odontoceridae and Philorheithridae (Trichoptera), with detailed presentation of their cephalic setal warts and grooves 2457, pp. 1-128 in Zootaxa 2457 (1) on page 102, DOI: 10.11646/zootaxa.2457.1.1, http://zenodo.org/record/5313709
An Assessment of Farmers' Willingness to Pay for the Protection of Nyabarongo River System, Rwanda
Creators: name: Sylvie, Nirere
name: Sylvie, Nirere
Publisher: name: Unknown
Year: 2012
Subjects: Agricultural and Food Policy
Environmental Economics and Policy
International Development

description: Nyabarongo River system is an ecosystem that provides goods and services to the Rwandese communities; this river serves as a tributary of the Nile River, an international resource. However, its integrity has been compromised due to increasing pressure for expansion of agricultural land. Against the aforementioned background, the present study was undertaken to assess farmers’ maximum Willingness To Pay (WTP) for protection of Nyabarongo River system. Further, the study assessed the potential influence of different factors on the WTP estimates. A sample of 359 households from four Districts in the catchment area was randomly selected and interviewed through household survey questionnaires. The Contingent Valuation Method (CVM) was applied to estimate the amount of money farmers are willing to pay while the influence of different factors was assessed using the Ordinary Least Squares regression method. Results showed that the mean household’s maximum WTP for the protection of Nyabarongo River system was 486.4 Rwandan francs (Rwf) per household per month over the proposed five years (USD$1 = 607 Rwf). The main factors that were found to have significant statistical influence on the WTP are household income, education of the household head, respondent’s perception of the current quality of water in Nyabarongo River, access to tap water, household size, extension contacts, initial bid amount and knowledge of individual responsibility in wetland protection. Based on these findings, it may be concluded that riparian communities attach considerable economic value to the river system. In order to achieve sustainable management of the wetland, there is need to increase awareness through radios, trainings, extension services and there is a possibility of raising funds from these communities for continued wetland protection
Data analysis - "Gadfly petrels use knowledge of the windscape, not memorised foraging patches, to optimise foraging trips on ocean-wide scales"
Creators: name: Ventura, Francesco
name: Granadeiro, José Pedro
name: Padget, Oliver
name: Catry, Paulo
Publisher: name: figshare
Year: 2021
Subjects: subject: 60201 Behavioural Ecology
subject: FOS: Biological sciences
subject: Marine Biology
subject: 60205 Marine and Estuarine Ecology (incl. Marine Ichthyology)

description: Data and R scripts to fully replicate the analysis presented in the research paper "Gadfly petrels use knowledge of the windscape, not memorised foraging patches, to optimise foraging trips on ocean-wide scales", by F.Ventura, J.P. Granadeiro, O. Padget and P. Catry
Psilotreta frontalis Banks 1899
Creators: name: Oláh, János
name: Johanson, Kjell Arne
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Odontoceridae
Psilotreta
Psilotreta frontalis

description: Psilotreta frontalis, new diagnostic species-group
The species in this diagnostic species-group are characterized by posessing a combination of genitalic characters, i.e. each harpago originates from the apex of the coxopodites; the apex of the harpagones each with few and large spines; and the absence of parameres in the phallic apparatus.
 The 6 species of this diagnostic species-group occur in eastern North America: P. amera Ross, 1939 (USA), P. frontalis Banks, 1899 (USA), P. indecisa Walker, 1852 (Canada), P. labida Ross, 1944 (USA), P. rossi Wallace, 1970 (USA), and P.rufa Hagen, 1861 (USA).
description: Published as part of Oláh, János & Johanson, Kjell Arne, 2010, Description of 33 new species of Calamoceratidae, Molannidae, Odontoceridae and Philorheithridae (Trichoptera), with detailed presentation of their cephalic setal warts and grooves 2457, pp. 1-128 in Zootaxa 2457 (1) on page 105, DOI: 10.11646/zootaxa.2457.1.1, http://zenodo.org/record/5313709
Random spanning forests and hyperbolic symmetry
Creators: name: Bauerschmidt, Roland
name: Crawford, Nicholas
name: Helmuth, Tyler
name: Swan, Andrew
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60K35

description: We study (unrooted) random forests on a graph where the probability of a forest is multiplicatively weighted by a parameter $β>0$ per edge. This is called the arboreal gas model, and the special case when $β=1$ is the uniform forest model. The arboreal gas can equivalently be defined to be Bernoulli bond percolation with parameter $p=β/(1+β)$ conditioned to be acyclic, or as the limit $q\to 0$ with $p=βq$ of the random cluster model. It is known that on the complete graph $K_{N}$ with $β=α/N$ there is a phase transition similar to that of the Erdős--Rényi random graph: a giant tree percolates for $α> 1$ and all trees have bounded size for $α<1$. In contrast to this, by exploiting an exact relationship between the arboreal gas and a supersymmetric sigma model with hyperbolic target space, we show that the forest constraint is significant in two dimensions: trees do not percolate on $\mathbb{Z}^2$ for any finite $β>0$. This result is a consequence of a Mermin--Wagner theorem associated to the hyperbolic symmetry of the sigma model. Our proof makes use of two main ingredients: techniques previously developed for hyperbolic sigma models related to linearly reinforced random walks and a version of the principle of dimensional reduction.
description: Accepted version
Search for anti-electron-neutrinos from the Sun at Super-Kamiokande-I
Creators: name: Kamiokande Collaboration
name: Gando, Y.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present the results of a search for low energy $\barν_e$ from the Sun using 1496 days of data from Super-Kamiokande-I. We observe no significant excess of events and set an upper limit for the conversion probability to $\barν_e$ of the $^8$B solar neutrino. This conversion limit is 0.8% (90% C.L.) of the standard solar model's neutrino flux for total energy = 8 MeV -- 20 MeV. We also set a flux limit for monochromatic $\barν_e$ for $E_{\barν_e}$ = 10 MeV -- 17 MeV.
description: 5 pages(LaTex), 5 figures, submitted to Phys. Rev. Letters
Farmers’ perceptions of foreign investment in Western Australian broadacre agriculture
Creators: name: Stewart, Fraser
name: Kragt, Marit
name: Gibson, Fiona
name: Stewart, Fraser
name: Kragt, Marit
name: Gibson, Fiona
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: farming systems
subject: foreign investment
subject: farmer attitudes
subject: Australian wheatbelt

description: Foreign investment can provide a flow of capital into Australian agriculture and has played an important role meeting the shortfalls in domestic savings throughout Australia’s history. Despite the political and media attention on foreign investment in agriculture, there is little knowledge about stakeholders’ perceptions of foreign investment in their community. This study assesses the opinions of farmers about foreign investment in the Wheatbelt. We investigate the economic, social and environmental opportunities and challenges associated with foreign investment. Interviews with agricultural experts identified three main operating structures of foreign investment: own-operate, own-lease and own-sharefarm. Semi-structured interviews with farmers in the WA Wheatbelt revealed that farmers generally have positive attitudes towards foreign investment, although there were clear advantages and disadvantages associated with the different operating structures. Overall, foreign investment was found to offer opportunities for capital injection, natural resource management, employment and community support in the Wheatbelt. This study provides evidence that, contrary to much speculation in the media, foreign investment is not having a detrimental effect on farmers and rural communities in the study locations.
NFDI4Biodiversity Training Materials
Creators: name: Röder, Juliane
Publisher: name: Zenodo
Year: 2024
Subjects: NFDI4Biodiversity
OER
training
training material

description: Diese kurze Präsentation gibt einen Überblick über die verschiedenen Arten von Trainingsmaterialien, die bisher im NFDI4Biodiversity Konsortium erstellt wurden. Grundsätzlich gibt es dabei drei Gruppen: 1) Trainingsmaterialien zu einzelnen Tools & Services, 2) Materialien aus Workshops, die als Trainingsmaterialien nachgenutzt werden können, und 3) eigens erstellte Trainingsmaterialien (unabhängig von bestimmten Anwendungen oder Workshops).

Diese Präsentation diente als Impulsvortrag in einem Treffen von DALIA und AP2 der NFDI Sektion EduTrain. Eine besondere Herausforderung bei der Annotation unserer Trainingsmaterialien im DALIA Interchange Format (DIF) ist, wie zusammengehörige Materialien am besten gruppiert werden können, auch wenn sie über diverse Plattformen verteilt veröffentlicht wurden.