cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
War aggravating poverty in Angola
Creators: name: Shirima, Ludovick Leon
Publisher: name: American University
Year: 2023

description: Although there is a large body of research devoted to the investigation of the causes of poverty, none of these studies has treated and modeled war as the main contributing factor to the impoverished welfare of Angola. The study addresses this issue, in three main ways. First, a temporal poverty profile is constructed for the two periods, 1995/96 and 2000/2001. This kind of temporal poverty profile provides the trend of poverty measures over time. We are able to compare poverty measures for the two periods using the Household Budget Surveys (HBS) data. Results from this analysis indicate that poverty has increased over time. Secondly, the use of a path diagram is applied to shed some light on the effects of war on welfare determinants. These are assumed to be total household per adult equivalent expenditure and poverty level incidence. This method throws some insight on how these war effects may be direct or indirect with respect to the household welfare proxies. Thirdly, ordinary least squares (OLS) regressions are implemented. The results are that war decreases the mean consumption per adult equivalent and increases the Poverty incidence level. These results support all the hypotheses stated in this study.
Extracellular Vehicles (EVs): A Novel Approach for Treating and Diagnosing Diseases
Creators: name: Dr. Ankit R. Patel
Publisher: name: The Science world a Monthly e magazine
Year: 2024

description:             Extracellular vehicles (EVs) are lipid bilayer-enclosed particles released from all types of cells and found in biological fluids such as blood, cerebrospinal fluid (CSF), urine, saliva, breast milk, seminal fluid and tears and that carry cargoes such as lipids, proteins and nucleic acids, protecting them from enzymatic degradation in the extracellular environment (Liu et al., 2021). The three main subtypes of EVs are microvesicles (MVs), exosomes and apoptotic bodies which are differentiated based upon their biogenesis, release pathways, size, content and function (Bongiovanni et al., 2021). EVs play an important role in the maintenance of tissue homeostasis and pathogenesis. Due to their small size, we are unable to see EVs by light microscopy, and some of them can only be visualized by electron microscopy, eventually with the use of immunogold labeling using specific EV markers. Several techniques have been developed for the collection and analysis of EVs from body fluids such as blood, but it remains extremely difficult to isolate them directly from tissues. Cells use extracellular vesicles (EVs) to interact with one another. EVs are essentially messages consisting of certain "words" (bioactive chemicals). Thus, the content of EVs is very specific and makes them a highly attractive research topic. A growing body of research aims to better elucidate the roles of EVs in tissue development, maintenance, and function, as well as in pathogenesis. Noteworthy, EV messages can have a local or distant effect: They can act as paracrine agents when they are released into the extracellular space or as endocrine agents when they are released in the circulation and thereby affect distant organs and cells. The molecular content of EVs in the blood or in other body fluids can provide information about their tissue of origin, allowing them to be used as biomarkers. As EVs can target specific tissues and be taken up by specific cells, EVs can be exploited to convey and deliver therapeutic molecules.
War aggravating poverty in Angola
Creators: name: Shirima, Ludovick Leon
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 38
subject: Economics
classificationCode: 3803
subject: Economic theory

description: Although there is a large body of research devoted to the investigation of the causes of poverty, none of these studies has treated and modeled war as the main contributing factor to the impoverished welfare of Angola. The study addresses this issue, in three main ways. First, a temporal poverty profile is constructed for the two periods, 1995/96 and 2000/2001. This kind of temporal poverty profile provides the trend of poverty measures over time. We are able to compare poverty measures for the two periods using the Household Budget Surveys (HBS) data. Results from this analysis indicate that poverty has increased over time. Secondly, the use of a path diagram is applied to shed some light on the effects of war on welfare determinants. These are assumed to be total household per adult equivalent expenditure and poverty level incidence. This method throws some insight on how these war effects may be direct or indirect with respect to the household welfare proxies. Thirdly, ordinary least squares (OLS) regressions are implemented. The results are that war decreases the mean consumption per adult equivalent and increases the Poverty incidence level. These results support all the hypotheses stated in this study.
Two intermediate-mass transiting brown dwarfs from the TESS mission
Creators: name: Carmichael, Theron W.
name: Quinn, Samuel N.
name: Mustill, Alexander J.
name: Huang, Chelsea
name: Zhou, George
name: Persson, Carina M.
name: Nielsen, Louise D.
name: Collins, Karen A.
name: Ziegler, Carl
name: Collins, Kevin I.
name: Rodriguez, Joseph E.
name: Shporer, Avi
name: Brahm, Rafael
name: Mann, Andrew W.
name: Bouchy, Francois
name: Fridlund, Malcolm
name: Stassun, Keivan G.
name: Hellier, Coel
name: Seidel, Julia V.
name: Stalport, Manu
name: Udry, Stephane
name: Pepe, Francesco
name: Ireland, Michael
name: Zerjal, Marusa
name: Briceno, Cesar
name: Law, Nicholas
name: Jordan, Andres
name: Espinoza, Nestor
name: Henning, Thomas
name: Sarkis, Paula
name: Latham, David W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We report the discovery of two intermediate-mass brown dwarfs (BDs), TOI-569b and TOI-1406b, from NASA's Transiting Exoplanet Survey Satellite mission. TOI-569b has an orbital period of $P = 6.55604 \pm 0.00016$ days, a mass of $M_b = 64.1 \pm 1.9 M_J$, and a radius of $R_b = 0.75 \pm 0.02 R_J$. Its host star, TOI-569, has a mass of $M_\star = 1.21 \pm 0.03 M_\odot$, a radius of $R_\star = 1.47 \pm 0.03 R_\odot$, $\rm [Fe/H] = +0.29 \pm 0.09$ dex, and an effective temperature of $T_{\rm eff} = 5768 \pm 110K$. TOI-1406b has an orbital period of $P = 10.57415 \pm 0.00063$ days, a mass of $M_b =46.0 \pm 2.7 M_J$, and a radius of $R_b = 0.86 \pm 0.03 R_J$. The host star for this BD has a mass of $M_\star =1 .18 \pm 0.09 M_\odot$, a radius of $R_\star = 1.35 \pm 0.03 R_\odot$, $ \rm [Fe/H] = -0.08 \pm 0.09$ dex and an effective temperature of $T_{\rm eff} = 6290 \pm 100K$. Both BDs are in circular orbits around their host stars and are older than 3 Gyr based on stellar isochrone models of the stars. TOI-569 is one of two slightly evolved stars known to host a transiting BD (the other being KOI-415). TOI-1406b is one of three known transiting BDs to occupy the mass range of $40-50 M_J$ and one of two to have a circular orbit at a period near 10 days (with the first being KOI-205b).Both BDs have reliable ages from stellar isochrones in addition to their well-constrained masses and radii, making them particularly valuable as tests for substellar isochrones in the BD mass-radius diagram.
description: 18 pages, 10 figures, 8 tables, accepted for publication in AJ
Search for TeV gamma-rays from SN 1987A in 2001
Creators: name: Enomoto, R.
name: Ksenofontov, L. T.
name: Katagiri, H.
name: Tsuchiya, K.
name: collaboration, CANGAROO-II
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We searched for TeV gamma-rays from the remnant of SN 1987A around 5400 days after the supernova. The observations were carried out in 2001, from November 16 to December 11, using the CANGAROO-II Imaging Atmospheric Cherenkov Telescope. In total, 708 minutes of ON- and 1019 minutes of OFF-source data were obtained under good conditions. The detection threshold was estimated to be 1 TeV, due to the mean zenith angle of 39$^\circ$. The upper limits for the gamma-ray flux were obtained and compared with the previous observations and theoretical models. The observations indicate that the gamma-ray luminosity is lower than $1\times 10^{37}$ erg s$^{-1}$ at $\sim 10$ TeV.
description: 8 pages, 3 figures, submitted for publication, style file added
Models of quintessence coupled to the electromagnetic field and the cosmological evolution of alpha
Creators: name: Copeland, E. J.
name: Nunes, N. J.
name: Pospelov, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the change of the effective fine structure constant in the cosmological models of a scalar field with a non-vanishing coupling to the electromagnetic field. Combining cosmological data and terrestrial observations we place empirical constraints on the size of the possible coupling and explore a large class of models that exhibit tracking behavior. The change of the fine structure constant implied by the quasar absorption spectra together with the requirement of tracking behavior impose a lower bound of the size of this coupling. Furthermore, the transition to the quintessence regime implies a narrow window for this coupling around $10^{-5}$ in units of the inverse Planck mass. We also propose a non-minimal coupling between electromagnetism and quintessence which has the effect of leading only to changes of alpha determined from atomic physics phenomena, but leaving no observable consequences through nuclear physics effects. In doing so we are able to reconcile the claimed cosmological evidence for a changing fine structure constant with the tight constraints emerging from the Oklo natural nuclear reactor.
description: 13 pages, 10 figures, RevTex, new references added
Sizes of Simultaneous Core Partitions
Creators: name: Even-Zohar, Chaim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: There is a well-studied correspondence by Jaclyn Anderson between partitions that avoid hooks of length s or t and certain binary strings of length s+t. Using this map, we prove that the total size of a random partition of this kind converges in law to Watson's U^2 distribution, as conjectured by Doron Zeilberger.
Endowment Effect and Market Effect: Revised
Creators: name: Fishelson, Gideon
name: Fishelson, Gideon
Publisher: name: Unknown
Year: 1992
Subjects: subject: Financial Economics
subject: Marketing
subject: FOS: Economics and business

description: The question regarding the determinants of the earning differential between two population groups at a given time period, and of its evolvement over time has been given continuous attention over the past three decades. The difference of the market prices of various endowments has also been called "discrimination" and measures were suggested for its quantification. In this study we present alternative formulations for the evaluation of the endowments vs. the market factors. We recommend the one which is the most consistent and symmetric over groups and show its performance for U.S. data.
Air-drying and drying-rewetting effects in Japanese Andosols subjected to long-term organic rice farming
Creators: name: Kautsar, Valensi
name: Cheng, Weiguo
name: Tawaraya, Keitaro
name: Hattori, Satoshi
name: Yamada, Susumu
name: Kobayashi, Kazuhiko
name: Toriyama, Kazunobu
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: Paddy fields are generally submerged during the growing season and drained in the fallow season, and occasionally stimulating the air-drying effect and drying-rewetting effect on soil nitrogen (N) mineralization and soil carbon (C) decomposition. It is important to understand how these two effects take place in Andosol field under organic farming. To elucidate these effects, we incubated fresh, air-dried, and dried-rewetted paddy soil anaerobically under flooded condition. Soils were from the fields subjected to organic rice farming (ORF) for 4–5 years (4ORF), 8–9 years (8ORF), and 12 years (12ORF) with only rice residues and fallow weeds as organic matter applied, and cnventional rice farming (CRF). Soil samples were collected from plow layer of 0–15 cm depth after the rice harvest. The results showed that air-dried and dried-rewetted treatments could significantly increase N mineralization potential in 8ORF and 12ORF. The air-drying effects were not significantly changed in 4ORF, but significantly increased in 8ORF and 12ORF as compared to CRF. The drying-rewetting effects of C decomposition potentials were highest in 12ORF significantly. The N mineralization potential of air-drying effect showed no significant difference compared to drying-rewetting effect on conventional and organic rice farming. The ratio of C decomposition to N mineralization after 8 weeks incubation was higher in fresh soil (at 7.26–8.61) than those in air-dried (at 4.09–4.35) and dried-rewetted (at 3.94–4.26) soils. These indicated that the easily decomposable soil organic matter under the anaerobic flooded condition from fresh soil was changed by air-drying and drying-rewetting treatments. The slow increase of N mineralization and C decomposition with years of organic farming suggest the slow increase of fallow weed, the biomass of which gradually increase with years. The specific behavior of 12ORF soil suggest the transition of soil condition from a transitional state to an established state.
Boundary Controllability of Riemann-Liouville Fractional Semilinear Equations
Creators: name: Tajani, Asmae
name: Alaoui, Fatima-Zahrae El
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We study the boundary regional controllability of a class of Riemann-Liouville fractional semilinear sub-diffusion systems with boundary Neumann conditions. The result is obtained by using semi-group theory, the fractional Hilbert uniqueness method, and Schauder's fixed point theorem. Conditions on the order of the derivative, internal region, and on the nonlinear part are obtained. Furthermore, we present appropriate sufficient conditions for the considered fractional system to be regionally controllable and, therefore, boundary regionally controllable. An example of a population density system with diffusion is given to illustrate the obtained theoretical results. Numerical simulations show that the proposed method provides satisfying results regarding two cases of the control operator.
description: This is a preprint version of the paper published open access in 'Commun. Nonlinear Sci. Numer. Simul.' [https://doi.org/10.1016/j.cnsns.2023.107814]. Submitted 26/Jul/2022; Revised 08/Dec/2022 and 16/Oct/2023; Accepted for publication 30/Dec/2023; Available online 03/Jan/2024
Excitation of Molecular Material Near the Young Stellar Object LkHalpha-234 in NGC 7129
Creators: name: Morris, P. W.
name: Noriega-Crespo, A.
name: Marleau, F. R.
name: Teplitz, H. I.
name: Uchida, K. I.
name: Armus, L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: With the Spitzer-IRS we have obtained the first mid-IR spectroscopy of NGC 7129, in the unusually strong outflow and in a ridge of H_2 emission near the Herbig Be star LkHalpha-234. The UV radiation field strength is estimated from PAH band intensities in the H_2 ridge, and from the rotational H_2 emission lines we have deduced aperture average excitation temperatures and column densities in the two regions, finding the H_2 ridge values to be consistent with pumping by UV fluorescence, but also comparable to regions that form H_2 in non-dissociative C-shocks. The H_2 emission in the outflow is consistent with formation by collisional excitation in J-shocks, with shock velocities of 10 - 30 km/sec. A photodissociating component may be present in the outflow, by similarity of S(0) line intensities in both regions. There is no indication of warm dust in the outflow. We also present the first 16um imaging of a Galactic nebula using the unique imaging capabilities of the IRS, and combine with ground-based 2.12um (H_2 1-0 S(1)) imaging. Candidate pre-main sequence objects are clearly evident in these data. We also find extended emission not previously observed around the young B star BD+65 1638, ~22'' across, showing that the region is not free of material as otherwise inferred by recent high angular resolution mapping at submillimeter wavelengths. The presence of this material complicates interpretation of the surrounding CO cavity and origin(s) of the photodissociated region, and further spectroscopic observations are needed to characterize its nature.
description: 5 pages, 3 figures, accepted for Spitzer ApJS volume
Diffusion and local deconfinement in relativistic systems
Creators: name: Wolschin, Georg
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In relativistic systems at RHIC energies, new deconfinement signatures emerge and indicate an increasingly clear separation between soft hadronic processes, and hard partonic interactions in a locally deconfined subsystem. Here the emphasis is on longitudinal variables, namely, net-baryon rapidity distributions. As described in a Relativistic Diffusion Model, they change from bell-shaped at the lower to double-humped at the higher SPS-energy, but do not reach local statistical equilibrium. At sqrt(sNN) = 200 GeV in the Au-Au system, however, they are shown to consist of three components. In addition to the nonequilibrium contributions, a third fraction close to midrapidity containing Z_eq = 22 protons reaches local statistical equilibrium in a discontinuous transition. It may be associated with a deconfinement of the participant partons and thus, serve as a signature for Quark-Gluon Matter formation.
description: 23 pages, 6 figures; fig. 2. added
ШАХС МАЪНАВИЙ ҚИЁФАСИДА ОИЛА МУҲИТИ ВА АНЪАНАЛАРИДАН ФОЙДАЛАНИШНИНГ ДОЛЗАРБЛИГИ
Creators: name: Зулхуморхон Рахматова
Publisher: name: Zenodo
Year: 2025

description: Аннотатция:Миллий анъаналар ва қадриятлар маънавий соғлом оилани барпо этади. Соғлом  миллийлик барқ урган жойда умумбашарий фазилатларнинг қадрига етиш ҳам ортади, миллатлар ўртасидаги дўстона муносабатлар ҳам камол топади, ўз халқи, юртига содиқ, миллати ва ватани равнақи учун хизмат қиладиган, фидокор инсонлар этиб тарбиялашда муҳим аҳамият касб этади.

Kалит сўзлар: Тарбия, ор-номус, қадр-қиммат, маънавий-аҳлоқий тарбия, оила, ният, урф-одатлар, садоқат, қадрият, меҳр-муҳаббат.
Trade Wars and Trade Talks
Creators: name: Grossman, Gene M.
name: Helpman, Elhanan
name: Grossman, Gene M.
name: Helpman, Elhanan
Publisher: name: Unknown
Year: 1993
Subjects: subject: Financial Economics
subject: political economy
subject: trade policy
subject: tariff wars
subject: trade negotiations

description: Whether governments clash in trade disputes or negotiate over trade agreements, their actions in the international arena reflect political conditions back home. Previous studies of cooperative and noncooperative trade relations have focused on governments that are immune from political pressures and that act as benevolent servants of the public interest. Here we take a first step toward introducing domestic politics into the analysis of international economic relations. We study the interactions between national leaders who are concerned both with providing a high standard of living to the general electorate and collecting campaign contributions from special interest groups. The analysis reveals the determinants of the structure of protection in a noncooperative trade war and in a cooperative trade agreement.
Rapid Variations of Narrow Absorption Line Components in the Spectrum of P Cygni
Creators: name: de Jager, Cornelis
name: Israelian, Garik
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the detection of rapid wavelength and intensity variations of narrow components in absorption line profiles of the hot galactic supergiant P Cygni. During most of the time, in one week of observations, there were two such components present. Although the period of observation is too short for firm conclusions, the velocity curves do not contradict the photometic period of 17.3 d. These curves may be interpreted as a double wave, 'swinging in counterphase'. This observation would suggest the presence of one long wave over the stellar surface. The waves are possibly gravity waves with wavelengths of the order of half the stellar radius.
description: 8 pages, 2 figures
Public goods, private incentives, and agricultural R&D: Productivity and poverty in developing country agriculture
Creators: name: Spielman, David Jon
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 38
subject: Economics

description: This study examines how market and institutional structures affect the flow and distribution of productivity-enhancing and poverty-reducing agricultural innovations to small-scale farmers, workers and other agrarian agents in developing countries. The study first tests the hypothesis that private sector incentives affect the diffusion of productivity-enhancing technological innovation with a fixed effects panel estimation of yield data for 14 crops cultivated in a large sample of developing countries over a 33 year period (1963--1996). Evidence suggests that the diffusion of productivity-enhancing technologies for major cereal and commercial crops is stimulated by agricultural market growth and stronger intellectual property rights (IPRs) regimes, while the flow of similar technologies for subsistence crops is hindered by stronger forms of legal and technological IPRs, and relatively unaffected by agricultural market growth. Next, the study tests the hypothesis that the institutional design of the international agricultural R&D system affects its productivity-enhancing and poverty-reducing impacts. Based on a comparative historical analysis of the Green Revolution during the 1970s and the emerging agbiotech era, evidence suggests that these impacts cannot be achieved without strategic, international leadership from the public sector in the production and dissemination of scientific knowledge and technology in agriculture.
Melissodes (Eumelissodes) velutinus
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy

description: Melissodes (Eumelissodes) velutinus (Cockerell, 1916)
[Holotype: AMNH; ♀ Claremont, California, USA]
Melissodes velutinus is distributed in California, USA, and BC, Mexico. We reviewed the only known specimen (♂) from Baja California at CASC, collected in May 1963 in the Succulent Coastal Matorral. See fig. 109.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 175, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Velocity jump processes : an alternative to multi-timestep methods for faster and accurate molecular dynamics simulations
Creators: name: Monmarché, Pierre
name: Weisman, Jérémy
name: Lagardère, Louis
name: Piquemal, Jean-Philip
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We propose a new route to accelerate molecular dynamics through the use of velocity jump processes allowing for an adaptive time-step specific to each atom-atom pair (2-body) interactions. We start by introducing the formalism of the new velocity jump molecular dynamics, ergodic with respect to the canonical measure. We then introduce the new BOUNCE integrator that allows for long-range forces to be evaluated at random and optimal time-steps, leading to strong savings in direct space. The accuracy and computational performances of a first BOUNCE implementation dedicated to classical (non-polarizable) force fields is tested in the cases of pure direct-space droplet-like simulations and of periodic boundary conditions (PBC) simulations using Smooth Particule Mesh Ewald. An analysis of the capability of BOUNCE to reproduce several condensed phase properties is provided. Since electrostatics and van der Waals 2-body contributions are evaluated much less often than with standard integrators using a 1fs timestep, up to a 400 % direct-space acceleration is observed. Applying the reversible reference system propagator algorithms (RESPA(1)) to reciprocal space (many-body) interactions allows BOUNCE-RESPA(1) to maintain large speedups in PBC while maintaining precision. Overall, we show that replacing the BAOAB integrator by the BOUNCE adaptive framework preserves a similar accuracy and leads to significant computational savings.
Melissodes (Eumelissodes) utahensis LaBerge 1961
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy

description: Melissodes (Eumelissodes) utahensis LaBerge, 1961
[Holotype: SEMC; ♀ Eureka, Utah, USA; July 20, 1949]
Melissodes utahensis has a broad distribution across the USA and Mexico. In Baja California, it is known from a single record documented by INHS. It was collected in 1960 in the Baja California Mountains 5 mi. W La Rumorosa (GBIF 2023). See fig. 109.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 175, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Public goods, private incentives, and agricultural R&D: Productivity and poverty in developing country agriculture
Creators: name: Spielman, David Jon
Publisher: name: American University
Year: 2023

description: This study examines how market and institutional structures affect the flow and distribution of productivity-enhancing and poverty-reducing agricultural innovations to small-scale farmers, workers and other agrarian agents in developing countries. The study first tests the hypothesis that private sector incentives affect the diffusion of productivity-enhancing technological innovation with a fixed effects panel estimation of yield data for 14 crops cultivated in a large sample of developing countries over a 33 year period (1963--1996). Evidence suggests that the diffusion of productivity-enhancing technologies for major cereal and commercial crops is stimulated by agricultural market growth and stronger intellectual property rights (IPRs) regimes, while the flow of similar technologies for subsistence crops is hindered by stronger forms of legal and technological IPRs, and relatively unaffected by agricultural market growth. Next, the study tests the hypothesis that the institutional design of the international agricultural R&D system affects its productivity-enhancing and poverty-reducing impacts. Based on a comparative historical analysis of the Green Revolution during the 1970s and the emerging agbiotech era, evidence suggests that these impacts cannot be achieved without strategic, international leadership from the public sector in the production and dissemination of scientific knowledge and technology in agriculture.
Quantum Vibronic Effects on the Excitation Energies of the Nitrogen-Vacancy Center in Diamond
Creators: name: Kundu, Arpan
name: Galli, Giulia
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the impact of quantum vibronic coupling on the electronic properties of solid-state spin defects using stochastic methods and first principles molecular dynamics with a quantum thermostat. Focusing on the negatively charged nitrogen-vacancy center in diamond as an exemplary case, we found a significant dynamic Jahn-Teller splitting of the doubly degenerate single-particle levels within the diamond's band gap, even at 0 K, with a magnitude exceeding 180 meV. This pronounced splitting leads to substantial renormalizations of these levels and subsequently, of the vertical excitation energies of the doubly degenerate singlet and triplet excited states. Our findings underscore the pressing need to incorporate quantum vibronic effects in first-principles calculations, particularly when comparing computed vertical excitation energies with experimental data. Our study also reveals the efficiency of stochastic thermal line sampling for studying phonon renormalizations of solid-state spin defects.
description: 41 pages and 14 figures in total. To be published in J. Phys. Chem. Lett
High-redshift X-ray properties of the haloes of simulated disc galaxies
Creators: name: Rasmussen, Jesper
name: Sommer-Larsen, Jesper
name: Toft, Sune
name: Pedersen, Kristian
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: X-ray luminosities and surface brightness profiles of the hot gas haloes of simulated disc galaxies at redshifts z=0-2 are presented. The galaxies are extracted from fully cosmological simulations and correspond in mass to the Milky Way. We find that the bolometric X-ray luminosities of the haloes decrease by a factor 4-10 from z~1 to z~0, reflecting the decrease in the rate at which hot halo gas cools out on to the disc. At all redshifts, most of the emission is found to originate within 10-15 kpc of the disc. When combined with models in which the evolution of disc X-ray luminosity is dominated by X-ray binaries, the predicted halo luminosities at z~1 show good agreement with constraints from spiral galaxies in Chandra Deep Field data. There is an indication that haloes with a metal abundance of 0.3 solar overpredict observed X-ray luminosities at z~1, suggesting that halo metallicities are lower than this value. Prospects for direct detection of the haloes of Milky Way-sized galaxies with current and future X-ray instrumentation are discussed. It is found that XEUS should be able to single out the halo emission of highly inclined Milky Way-sized disc galaxies out to approximately z=0.3. For such galaxies in this redshift interval, we estimate a lower limit to the surface density of detectable haloes on the sky of ~10 deg^(-2). More generally, owing to their luminosity evolution, the optimum redshifts at which to observe such haloes could be 0.5
description: 9 pages, 4 figures, minor corrections to conform to version accepted to MNRAS
Assessing the Beliefs and Behaviours of Waste Reduction Practices of Vancouver Residents
Creators: name: Erickson, Carly
name: Sing, Cheryl
name: Chen, Monica
name: Wang-Tretiak, Nicholas
name: Sakai, Ryo
Publisher: name: The University of British Columbia
Year: 2017

description: We examined waste reduction beliefs and behaviours in Vancouver, B.C. We were interested in determining what people in Vancouver believe to be the most effective waste reduction practices in their daily lives, what are the costliest, what actions they are currently doing, and what actions they would be willing to adopt. We distributed an online self-report survey questionnaire which a total of 134 Vancouver residents completed. We found several interesting results. First, we found that participants’ willingness to adopt waste reduction practices was higher on average, than their frequency to use the practices in their daily lives, although frequency and willingness were positively correlated. Second, we found that perceived cost did not play as significant a role as does perceived effectiveness in restricting participants’ waste reduction behavior. We found that Willingness and Perceived effectiveness were positively correlated, meaning that Vancouver residents are more willing to adopt the waste reduction practices that they perceive to have more significant impact on the environment. An implication of these results is that there may be another variable at play, other than cost or perceived effectiveness, which makes waste reduction less desirable. If that variable is time/effort, initiatives should be focused on making waste reduction more convenient. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Constantin Caratheodory: 1873--1950
Creators: name: Hill, Vicki Lynn
Publisher: name: American University
Year: 2023

description: The motion picture is a powerful tool that can educate and inspire. In the mathematical sciences, the motion picture can bring to life the life, times, and work of a mathematician and the excitement of discovery. We see this in the success of motion pictures such as A Beautiful Mind, Pi, and Good Will Hunting, television programming such as PBS's Nova, and documentaries such as The Proof. These movies present mathematics and mathematicians in an interesting and exciting manner. A student's classroom experience is broadened when well-produced educational television programming is incorporated into the mathematics curriculum. The film, Constantin Caratheodory: 1873--1950, is a 30-minute documentary on the life and times of the mathematician Constantin Caratheodory. It discusses his contributions to mathematics and explores several of those contributions in-depth. Through the use of archival photographs and footage, interviews, live action, recreations, and graphics Constantin Caratheodory's life and work emerges. The documentary will focus primarily on his years of mathematical work but briefly discuss his early years and family background.
CMS highlights on searches for new physics in final states with jets
Creators: name: Vourliotis, Emmanouil
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Many new physics models, e.g., leptoquarks, extra dimensions, extended Higgs sectors, supersymmetric theories, and dark sector extensions, are expected to manifest themselves in the final states with hadronic jets. Novel experimental techniques, including a dedicated scouting trigger stream and advanced machine learning techniques can be employed to identify such signals. This talk presents searches in CMS for new phenomena in the final states that include jets, focusing on the most recent results obtained using the full Run-II data-set collected at the LHC.
description: Contribution to The Eleventh Annual Conference on Large Hadron Collider Physics (LHCP2023), 22-26 May 2023, Belgrade, Serbia
Constantin Caratheodory: 1873--1950
Creators: name: Hill, Vicki Lynn
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education

description: The motion picture is a powerful tool that can educate and inspire. In the mathematical sciences, the motion picture can bring to life the life, times, and work of a mathematician and the excitement of discovery. We see this in the success of motion pictures such as A Beautiful Mind, Pi, and Good Will Hunting, television programming such as PBS's Nova, and documentaries such as The Proof. These movies present mathematics and mathematicians in an interesting and exciting manner. A student's classroom experience is broadened when well-produced educational television programming is incorporated into the mathematics curriculum. The film, Constantin Caratheodory: 1873--1950, is a 30-minute documentary on the life and times of the mathematician Constantin Caratheodory. It discusses his contributions to mathematics and explores several of those contributions in-depth. Through the use of archival photographs and footage, interviews, live action, recreations, and graphics Constantin Caratheodory's life and work emerges. The documentary will focus primarily on his years of mathematical work but briefly discuss his early years and family background.
Comparative carcass characteristics of ruminant species in Bangladesh
Creators: name: Abedin, S. M. A.
name: Alam, M. R.
name: Faruqe, M. O.
name: Abedin, S. M. A.
name: Alam, M. R.
name: Faruqe, M. O.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Livestock Production/Industries
subject: Production Economics
subject: Species
subject: Slaughter house
subject: Dressing percentage
subject: Products and By-products
subject: Carcass

description: The present study describes the effect of species on carcass yield and composition of goat, sheep, cattle and buffalo. This experiment was conducted on 32 goats, 21 sheep, 8 cattle and 9 buffaloes in the slaughter house of Mymensingh town and Animal Breeding and Genetics Laboratory, Bangladesh Agricultural University. Animals were slaughtered according to "Mohammedan" method by severing the Major vessels-of the throat by a transverse cut. The average age at slaughtering of goat, sheep, cattle and buffalo was 11.48, 11.32, 38.00 and 28.00 months and the dressing percentage was 43.73, 41.60, 44.02 and 42.64 respectively. There was no significant effect of genotype on the dressing percentage of the animals. The total average edible products and by-products for goat, sheep, cattle and buffalo were 58.18%, 55.23%, 57.24% and 58.32% respectively and it varied significantly (p<0.05) among the aforesaid species. All edible by-products (except heart) i. e. head, liver, lung plus trachea, pluck, spleen and kidney differed significantly (p<0.01 or p<0.05) as per cent of body weight among the four different species. The total average inedible by-products percentage for goat, sheep, cattle and buffalo were 42.13, 44.85, 42.68 and 40.21respectively and there was no significant variation on it among the species considered. There was significant (p<0.01) species effect on leg and skin as per cent of body weight while that for blood and gut it was not. In case of carcass chemical composition, the moisture content (%) was as 74.37, 75.27, 75.79 and 74.72; crude protein (%) as 21.52, 19.59, 20.18 and 20.41; ether extract (%) as 3.29, 3.25, 2.60 and 3.36; ash (%) as 1.23, 1.26, 1.07 and 1.15 for goat, sheep, cattle and buffalo respectively. There was no significant difference in the carcass chemical composition among the four species.
Nonlinear electrodynamics and the gravitational redshift of highly magnetised neutron stars
Creators: name: Cuesta, Herman J. Mosquera
name: Salim, Jose' M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The idea that the nonlinear electromagnetic interaction, i. e., light propagation in vacuum, can be geometrized was developed by Novello et al. (2000) and Novello & Salim (2001). Since then a number of physical consequences for the dynamics of a variety of systems have been explored. In a recent paper Mosquera Cuesta & Salim (2003) presented the first astrophysical study where such nonlinear electrodynamics (NLEDs) effects were accounted for in the case of a highly magnetized neutron star or pulsar. In that paper the NLEDs was invoked {\it a là} Euler-Heisenberg, which is an infinite series expansion of which only the first term was used for the analisys. The immediate consequence of that study was an overall modification of the space-time geometry around the pulsar, which is ``perceived'', in principle, only by light propagating out of the star. This translates into an significant change in the surface redshift, as inferred from absorption (emission) lines observed from a super magnetized pulsar. The result proves to be even more dramatic for the so-called magnetars, pulsars endowed with magnetic ($B$) fields higher then the Schafroth quantum electrodynamics critical $B$-field. Here we demonstrate that the same effect still appears if one calls for the NLEDs in the form of the one rigorously derived by Born & Infeld (1934) based on the special relativistic limit for the velocity of approaching of an elementary particle to a pointlike electron [From the mathematical point of view, the Born & Infeld (1934) NLEDs is described by an exact Lagrangean, whose dynamics has been successfully studied in a wide set of physical systems.].
description: Accepted for publication in Month. Not. Roy. Ast. Soc. latex file, mn-1.4.sty, 5 pages, 2 figures
Beyond BFKL
Creators: name: Peschanski, R. B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Balitsky-Fadin-Kuraev-Lipatov (BFKL) evolution equation is known to be ``unstable'' with respect to fluctuations in gluon virtuality, transverse momentum and energy requiring to go beyond the leading order BFKL. Still, these instabilities point to fruitful improvements of our deep understanding of QCD. Recent applications to next-leading order and to saturation problems are outlined.
description: 12 pages, 6 figures, Invited Talk at the Ringberg Workshop ``New Trends in HERA Physics 2003''September 28 - October 3, 2003
The Arab Nahdha projects and the Arab intellectuals' perspectives of modernity and social change in the Arab world
Creators: name: Al-Sulaim, Fatimah Abdullah
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4410
subject: Sociology
subject: FOS: Sociology

description: Since the introduction of modernity to the Arab World in 1798, the Arab World has experienced three attempts of modernization called (Arab Nahdha projects). These projects served as the theoretical and practical agenda for social change, designed for achieving liberty, progress and prosperity. The first two projects (1815--1837, and 1952--1970) failed, and the Arab World is currently going through the third attempt. The failure of the Nahdha projects, and the persistence of backwardness of the Arab World have resulted in rich and diverse intellectual writings about modernity and the desired social change in the Arab World. This qualitative study analyzes the Arab intellectuals' perspectives regarding modernity and social change in the Arab World. A classification of the main trends and currents of the Arab Intellectuals' thoughts is formulated as a methodological tool. This classification divides the intellectual thought into two main categories: modernity in Focus and modernity marginal. Each category is further divided, and the thought of each intellectual representing each main current is reviewed, discussed and analyzed in detail. Building on this classification, the analysis of the thought of Sadik Jalal al-Azm represents the extreme secular current, whereas the thought of Mohammad Arkoun represents the moderate secular current. While the ideas of Sayyid Qutb represents the Salafi current, the thought of Mohammad Abid al-Jabiri represents the reconciliatory current. The analysis clearly demonstrates the divers macro-perspectives of these intellectuals particularly in their interpretations of the causes of backwardness, and the agenda proposed for solutions and social change in the Arab World. In addition, this study shows a noticeable gap between the macro-perspectives of the intellectuals and the findings of some empirical micro-studies. This study demonstrates the inadequacy of relying on one single approach and proposes the integration of both macro and micro perspectives. Therefore, this study suggests integration between the macro and the micro perspectives in interdisciplinary studies about the social reality of the Arab World.
New measurement of the Lithium-6/Lithium-7 isotopic ratio in the extra-solar planet host star HD82943 and line blending in the Li 6708 A region
Creators: name: Israelian, Garik
name: Santos, Nuno
name: Mayor, Michel
name: Rebolo, Rafael
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The presence of possible blends in the spectral region of the Li resonance line at 6708 A in solar-type metal-rich stars is investigated using high resolution and high signal-to-noise spectroscopic observations. Our analysis does not confirm the identification of a weak absorption feature at 6708.025 A with the low excitation TiI line proposed by Reddy et al. (2002). Our spectrum synthesis suggests that the unidentified absorption is most probably produced by a high excitation SiI line originally proposed by Muller et al. (1975). Reanalysis of the Lithium-6/Lithium-7 isotopic ratio in HD82943 was performed by taking the SiI line into account and using new VLT/UVES spectra of HD82943 with a signal-to-noise ratio close to 1000. We confirm the presence of Lithium-6 in the star's atmosphere while the updated value for the isotopic ratio is f(Lithium-6) = 0.05+-0.02.
description: 11 pages, 10 figures, Accepted to the Astronomy and Astrophysics
Precision predictions for scalar leptoquark pair-production at hadron colliders
Creators: name: Borschensky, Christoph
name: Fuks, Benjamin
name: Kulesza, Anna
name: Schwartländer, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We revisit scalar leptoquark pair-production at hadron colliders and significantly improve the level of precision of the cross section calculations. Apart from QCD contributions, we include lepton t-channel exchange diagrams that turn out to be relevant in the light of the recent B-anomalies. We evaluate all contributions at next-to-leading-order accuracy in QCD and resum, in the threshold regime, soft-gluon radiation at next-to-next-to-leading logarithmic accuracy. Our predictions consist hence in the most precise leptoquark cross section calculations available to date, and are necessary for the best exploitation of leptoquark searches at the LHC.
description: 7 pages, 2 figures; version accepted by PRD