cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Profitability of Hermetic Purdue Improved Crop Storage (PICS) Bags for African Common Bean Producers
Creators: name: Jones, Michael
name: Alexander, Corinne E.
name: Lowenberg-DeBoer, James
name: Jones, Michael
name: Alexander, Corinne E.
name: Lowenberg-DeBoer, James
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: International Development
subject: Research and Development/Tech Change/Emerging Technologies
subject: agricultural pests
subject: technology adoption
subject: Phaseolus vulgaris
subject: hermetic storage
subject: storage economics

description: Bruchid species like Acanthoscelides obtectus (Coleoptera) and Zabrotes subfasciatus (Coleoptera) cause significant storage losses for African common bean producers. The value of storage protection to a market-oriented farmer is a function of price seasonality, value loss prevention, and their respective opportunity costs of capital. Evidence suggests that hermetic technologies like Purdue Improved Crop Storage (PICS) bags could be effective against key legume storage pests, but sustainable technology introduction requires that it be profitable for producers. While PICS bag effectiveness against these specific common bean bruchid species is still under investigation, this analysis references dry weight loss figures from life science articles and builds on previous value loss research to provide a model for potential competitiveness and technology adoption. PICS bag profitability with one and two years use are compared with estimated profitability of leading insecticide Actellic Super (permethrin (0.3%) + pirimiphos-methyl (1.6%)), weekly solar disinfestation and sieving, and the botanicals A.indica, T. minuta, C. lusitanica, and C. ambrosiodes. The Tanzanian market regions of Mbeya, Songea, Arusha, and Kigoma are analyzed. Results show competitive profitability of PICS bags with conservative loss estimates for alternative storage technologies, with high potential for adoption in Mbeya, Songea, and Kigoma.
Persistent Radio Emission from Synchrotron Heating by a Repeating Fast Radio Burst Source in a Nebula
Creators: name: Li, Qiao-Chu
name: Yang, Yuan-Pei
name: Dai, Zi-Gao
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The first repeating fast radio burst (FRB), FRB 121102, was found to be associated with a spatially coincident, persistent nonthermal radio source, but the origin of the persistent emission remains unknown. In this paper, we propose that the persistent emission is produced via synchrotron-heating process by multiple bursts of FRB 121102 in a self-absorbed synchrotron nebula. As a population of bursts of the repeating FRB absorbed by the synchrotron nebula, the energy distribution of electrons in the nebula will change significantly. As a result, the spectrum of the nebula will show a hump steadily. For the persistent emission of FRB 121102, the total energy of bursts injecting into the nebula is required to be about $3.3\times10^{49}\,\unit{erg}$, the burst injection age is over $6.7\times 10^4\,\unit{yr}$, the nebula size is $\sim0.02\,\unit{pc}$, and the electron number is about $3.2\times10^{55}$. We predict that as more bursts inject, the brightness of the nebula would be brighter than the current observation, and meanwhile, the peak frequency would become higher. Due to the synchrotron absorption of the nebula, some low-frequency bursts would be absorbed, which may explain why most bursts were detected above $\sim1~\unit{GHz}$.
description: 11 pages, 9 figures, accepted for publication in ApJ
Effect of the Casimir-Polder force on the collective oscillations of a trapped Bose-Einstein condensate
Creators: name: Antezza, Mauro
name: Pitaevskii, Lev P.
name: Stringari, Sandro
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We calculate the effect of the interaction between an optically active material and a Bose-Einstein condensate on the collective oscillations of the condensate. We provide explicit expressions for the frequency shift of the center of mass oscillation in terms of the potential generated by the substrate and of the density profile of the gas. The form of the potential is discussed in details and various regimes (van der Waals-London, Casimir-Polder and thermal regimes) are identified as a function of the distance of atoms from the surface. Numerical results for the frequency shifts are given for the case of a sapphire dielectric substrate interacting with a harmonically trapped condensate of $^{87}$Rb atoms. We find that at distances of $4-8 μm$, where thermal effects become visible, the relative frequency shifts produced by the substrate are of the order $10^{-4}$ and hence accessible experimentally. The effects of non linearities due to the finite amplitude of the oscillation are explicitly discussed. Predictions are also given for the radial breathing mode.
description: 28 pages, 10 figures. Submitted to PRA
THE EFFECTS OF THE INTERNATIONAL SMALLGROUP AND TREE PLANTING PROGRAM ON HOUSEHOLD INCOME IN NYERI DISTRICT, KENYA
Creators: name: Kinuthia, Emmanuel K.
name: Kinuthia, Emmanuel K.
Publisher: name: Unknown
Year: 2010
Subjects: Environmental Economics and Policy
Food Security and Poverty

description: Household poverty and food insecurity in Kenya is a major challenge especially in rural areas. The situation has been exacerbated by poor economic performance, nationwide drought and the global financial crisis. Nevertheless, numerous efforts are being made both by the government and non-governmental organizations to mitigate the situation in rural areas notably in Nyeri district which is a relatively poor district in central province with poverty rate standing at 30% (CBS, 2008). Nyeri district has been a target of a non-governmental organization, The International Smallgroup and Tree Planting Program (TIST). Its objective is to help locals increase their income and conserve environment by planting trees. Farmers are increasingly joining the program substituting land previously allocated for food crops with tree planting enterprise. Despite presence of TIST, poverty still remains high in the region, with the statistics showing an increase in the population living below the poverty line from 29% in 2000 to 33% in 2006 (CBS, 2008). The main objective of the study was to determine the effects of TIST program on household income, environmental services and to determine factors that influence participation through a survey questionnaire. Multistage sampling was applied in selection of 120 farmers and analysis was done using SPSS and STATA. Heckman two stage sample selection model was used in analyzing factors that determine participation and log-log model was used to quantify the contribution of the program to household income upon participation. Descriptive statistics were used to determine the effects of the program on environmental services. The results showed no significant difference in income between participants and nonparticipants. Other socioeconomic and farm specific factors showed significant difference in household incomes. Farm sizes, access to micro-finance and program awareness positively influenced participation and were significant at 5% level of significance. Farm size p>(z) value was 0.048, access to micro finance(0.018) and program awareness(0.029). The program had a positive effect on a variety of environmental services. The study recommends that TIST program should adopt a better tree planting management approach to avoid total substitution of crops with tree planting enterprise and collaborate with the government and other stakeholders in linking farmers with market for their produce so as to enable them market their surplus and further research be done to explore issues that this study was not able to capture like technical issues regarding carbon sinking, the cost being presently incurred and potential benefits in the future and opportunity cost of the foregone agricultural output.
Relic neutrino background from cosmological supernovae
Creators: name: Ando, Shin'ichiro
name: Sato, Katsuhiko
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Present and future observations of supernova relic neutrinos (SRNs), i.e., a cosmological neutrino background from past core-collapse supernova explosions, potentially give us useful information concerning various fields of astrophysics, cosmology and particle physics. We review recent progress of theoretical and observational studies of SRNs, particularly focusing on the detectability and also on implications for cosmic star formation history and neutrino physics.
description: 29 pages, 8 figures, minor revision; review article accepted by New Journal of Physics, focus issue on neutrino physics
TECHNICAL EFFICIENCY OF UPLAND RICE PRODUCERS IN SOUTH WESTERN UGANDA
Creators: name: Jude, Asiimwe. K.
name: Jude, Asiimwe. K.
Publisher: name: Unknown
Year: 2009
Subjects: Crop Production/Industries
Farm Management

description: Uganda’s rice demand has been on an increase due to increasing population, urbanization and changing consumer preferences. The resulting effect has been increased importation of rice into the country consequently straining foreign exchange accounts. Insufficiency in the rice supply is related to the low national average yield of 1.5t/ha. New upland rice varieties that are high yielding have been introduced in the country to improve national supply, save wetlands, fight food insecurity and improve incomes of the rural poor. This study was conducted in South Western Uganda in the districts of Bushenyi and Rukungiri. It examined whether farmers were technically efficient in input use to generate the required output levels and the farm specific factors that were affecting their technical efficiency. A total of 196 respondents were randomly selected from four rice producing sub counties using a sampling frame generated by the sub county leaders. A Cobb Douglas production function was fitted to the data to generate results. Analysis was accomplished using frontier 4.1 programme. Results revealed that production of upland rice involved excessive use of labour (1136 person days/ ha) and seeds (154kg/ha) compared to the recommended rates. It was also found that technical efficiency of upland producers were below the frontier level averaging at 61% and the existing output was being achieved through land expansion. Attainment of primary five education significantly (P=0.076) improved efficiency of farmers. For farm level technical efficiency of upland rice to improve, yield improving and labour saving technologies need to be introduced notably soil enriching aspects like fertilizers. For labour saving technologies, use pre or post emergency herbicides and mechanization of the upland rice would be a better move in the right direction. Lastly promoting primary education and specialised extension services that target upland rice will improve efficiency greatly.
Hellmut Sichtermann und Guntram Koch, Griechische Mythen auf römischen Sarkophagen
Creators: name: Gabelmann, Hanns
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Hellmut Sichtermann und Guntram Koch, Griechische Mythen auf römischen Sarkophagen, unter Verwendung neuer Aufnahmen von G. Singer. Bilderhefte des Deutschen Archäologischen Instituts Rom 5-6. Verlag Ernst Wasmuth Tübingen 1975. 23 Seiten, 176 Tafeln.
description: Bonner Jahrbücher, Bd. 177 (1977): Bonner Jahrbücher
COMPLIANCE WITH EUREPGAP STANDARDS: DETERMINANTS, COSTS AND IMPLICATIONS ON PROFITABILITY AMONG SMALLHOLDER FRENCH BEANS EXPORTERS IN KIRINYAGA DISTRICT, KENYA
Creators: name: Muriithi, Beatrice Wambui
name: Muriithi, Beatrice Wambui
Publisher: name: Unknown
Year: 2008
Subjects: Crop Production/Industries
International Relations/Trade
Productivity Analysis

description: Horticulture provides many developing countries with opportunities for export diversification, poverty alleviation and rural development. However, stringent public and private-sector food-safety standards, for example EurepGap, pose a challenge especially to small export farmers. Compliance with these standards entails costly investments that may be a burden to smallholder farmers, failure to which might lead to their exclusion in the global market. A number of questions which require empirical research arise to confirm or refute these concerns. The study assesses awareness of the EurepGap standards among smallholder farmers and analyzes the critical factors influencing their compliance. It also identifies the costs of complying with these standards and their implications on profitability of smallholder French bean farming business in Kirinyaga District in Kenya. The study uses simple random sampling technique to collect primary data from 103 respondents. Descriptive statistics, costbenefit accounting (partial budgeting) and binomial probit model are used to analyze the data. The results show that an information gap exits as regards to awareness of EurepGap standards especially among the non-compliant farmers. Compliance with the standards requires high costs of investment and this is a major constraint to the smallholder farmers. Strategies such as contract farming and collective action through group membership were found to enhance compliance among smallholder farmers. Further, empirical analysis shows that compliance with the standards is positively influenced by socio-economic and farm characteristics such as area under French beans production, and availability of external support from extension services, but negatively influenced by access to off-farm income. In addition to high cost of compliance, farmers face other constraints such as high cost of recommended chemicals and that of hiring extra personnel. Results also show that compliance is not for profit enhancement but may be for market assurance. However, farmers are enjoying non-financial benefits from compliance such as skills on good farm management and record keeping. Since the standards require high cost of compliance with EurepGap standards, the study suggests that the government and other stakeholders in this sub-sector should assist the smallholder farmers to ensure their continued access to the lucrative markets. The government should lead in disseminating information about the standards through extension training, besides encouraging farmers to form groups to share the cost of compliance. A policy to ensure the right prices translate to the farmers should be put in place. It is also worth exploring less strict market where Kenyan products can be channeled to.
Friedrich Rakob und Wolf-Dieter Heilmeyer, Der Rundtempel am Tiber in Rom
Creators: name: Gabelmann, Hanns
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Friedrich Rakob und Wolf-Dieter Heilmeyer, Der Rundtempel am Tiber in Rom. Mit einer Bauaufnahme von W. Niemann und einem Beitrag von P.A. Gianfrotta. Deutsches Archäologisches Institut Rom, Sonderschriften 2. Verlag Philipp von Zabern Mainz 1973. 48 Seiten, 60 Tafeln, 23 Beilagen.
description: Bonner Jahrbücher, Bd. 177 (1977): Bonner Jahrbücher
Superfluid response in electron-doped cuprate superconductors
Creators: name: Luo, H. G.
name: Xiang, T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose a weakly coupled two-band model with $d_{x^2-y^2}$ pairing symmetry to account for the anomalous temperature dependence of superfluid density $ρ_s$ in electron-doped cuprate superconductors. This model gives a unified explanation to the presence of a upward curvature in $ρ_s$ near $T_c$ and a weak temperature dependence of $ρ_s$ in low temperatures. Our work resolves a discrepancy in the interpretation of different experimental measurements and suggests that the pairing in electron-doped cuprates has predominately $d_{x^2-y^2}$ symmetry in the whole doping range.
description: 4 pages, 3 figures, title changed and references added
Additional file 1 of Adaptive matching between phyllosphere bacteria and their tree hosts in a neotropical forest
Creators: name: Lajoie, Geneviève
name: Maglione, Rémi
name: Kembel, Steven W.
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology
subject: Plant Biology

description: Additional File 1. Supplementary Tables. This additional file contains 2 supplementary tables, referred to in the main text.
EVALUATION OF THE CONSTRAINTS TO PROFITABLE SMALLHOLDER DAIRYING: A CASE OF NAKURU COUNTY, KENYA
Creators: name: Dennis, Kinambuga
name: Dennis, Kinambuga
Publisher: name: Unknown
Year: 2010
Subjects: Farm Management
Livestock Production/Industries
Productivity Analysis

description: The Kenya dairy sub-sector has been undergoing developments since the 1980s, these has been in the areas of adoption of intensive dairy farming especially zero grazing. There have been concerted efforts to commercialize the sub-sector so as to make it more profitable to farmers, especially smallholder farmers. Despite the development, the profitability in the sector has not been consistent among the smallholder farmers; some farmers realize very dismal profits and even losses. The causes of the varying profits have not been empirically established with the influence of institutional arrangements and financial factors contributing to this inconsistency not fully established. The main objective of this study was to establish the critical institutional arrangements and financial factors that constrain the profitability of small-holder dairy farmers in Nakuru County. A sample of 129 smallholder dairy farmers was selected from Rongai, Baruti, Ngata and Mbogoini divisions of the County. Multi-stage sampling procedure was used to select respondents and the data was collected by the use of structured interview schedules administered by enumerators. The work employed the Data Envelopment Analysis to come up with profit efficiency rankings among the farmers, and the Frontier Model was used to establish the factors that constrain profit efficiency. The data was processed using STATA and DEA frontier packages. The mean efficiency according to the results was 86%. The factors that were significant in explaining profitability efficiency according to the frontier results were: feeding systems (-0.38), breed type (-0.11), gender (0.37), debt amount (-0.0002) and debt asset ratio (21.43). Issues of trust were also found to have effect on profitability, and they included trust on local buyer price (0.52), trust on institutional buyer unit of measure (-0.1.77), and trust on middlemen unit of measurement (-0.05). The positive sign signifies that the factor increases profit inefficiency while the negative sign indicates that the factor reduces profit inefficiency. These findings will be useful to the stakeholders of the dairy industry sub sector to formulate policy pertaining to dairy enterprise inputs, marketing issues and financial products and also provide smallholder dairy farmers with a package of critical factors to enhance and stabilize their profitability
Multidimensional exact classes, smooth approximation and bounded 4-types
Creators: name: Wolf, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: In connection with the work of Anscombe, Macpherson, Steinhorn and the present author in [1] we investigate the notion of a multidimensional exact class ($R$-mec), a special kind of multidimensional asymptotic class ($R$-mac) with measuring functions that yield the exact sizes of definable sets, not just approximations. We use results about smooth approximation [24] and Lie coordinatisation [14] to prove the following result (Theorem 4.6.4), as conjectured by Macpherson: For any countable language $\mathcal{L}$ and any positive integer $d$ the class $\mathcal{C}(\mathcal{L},d)$ of all finite $\mathcal{L}$-structures with at most $d$ 4-types is a polynomial exact class in $\mathcal{L}$, where a polynomial exact class is a multidimensional exact class with polynomial measuring functions.
Variability of the Penetration of Particles through Facemasks
Creators: name: Pushpawela, Buddhi
name: Amanatidis, Stavros
name: Huang, Yuanlong
name: Flagan, Richard C.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Neuroscience
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: COVID-19 is transmitted, at least in part, by airborne particles emitted by infected individuals. Wearing masks is one of the key actions that are required to prevent spreading COVID-19. To understand the variability in the performance, we evaluated the material performance of the whole mask, as manufactured, in terms of the penetration of particles, comfort and the quality factor of multiple copies of 29 different types. All masks were mounted to prevent leakage around the edges so the mask material and manufacture was tested, but the effects of the fit were not considered. The results of this study thus represent the upper bound of the performance of facemasks since leakage around the edges due to poor fit often overwhelms filtration through the mask material. The tests were performed at a steady flow rate of 30 L/min; mean values of the performance parameters were calculated for two different sizes; 0.12 µm and 0.3 µm. Of the masks tested, for 0.12 µm particles, N95 face filtering respirators consistently had the lowest peak penetration 1.7 ± 0.5%, while KN95 masks allowed 3.7 ± 2.6% penetration. In contrast, penetration through pleated procedure masks was 14.7 ± 16.9% due to one outlier - with that outlier removed, penetration decreased to 7.1 ± 4.3%; cloth masks allowed 26.4 ± 9.3% penetration. Tests on multiple copies of different masks demonstrated consistent performance of N95s, but considerably greater variability within the other classes of masks tested, leading to uncertainty in the degree of protection that they would provide.
Thermal condensation in a turbulent atomic hydrogen flow
Creators: name: Audit, E.
name: Hennebelle, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a numerical and analytical study of the thermal fragmentation of a turbulent flow of interstellar hydrogen. We first present the different dynamical processes and the large range of spatial (and temporal) scales that need to be adequately represented in numerical simulations. Next, we present bidimensionnal simulations of turbulent converging flows which induce the dynamical condensation of the warm neutral phase into the cold phase. We then analyse the cold structures and the fraction of unstable gas in each simulation, paying particular attention to the influence of the degree of turbulence. When the flow is very turbulent a large fraction of the gas remains in the thermally unstable domain. This unstable gas forms a filamentary network. We show that the fraction of thermally unstable gas is strongly correlated with the level of turbulence of the flow. We then develop a semi-analytical model to explain the origin of this unstable gas. This simple model is able to reproduce quantitatively the fraction of unstable gas observed in the simulations and its correlation with turbulence. Finally, we stress the fact that even when the flow is very turbulent and in spite of the fact that a large fraction of the gas is maintained dynamically in the thermally unstable domain, the classical picture of a 2-phase medium with stiff thermal fronts and local pressure equilibrium turns out to be still relevant in the vicinity of the cold structures.
description: to be published in A&A
Territoriality in organizations : theory and measurement
Creators: name: Brown, Graham
Publisher: name: University of British Columbia
Year: 2009

description: Territorial feelings and behaviors are important, pervasive, and yet largely overlooked aspects of organizational life. Organizational members can and do become territorial over physical spaces, ideas, roles, relationships and a myriad of other potential possessions in organizations. To this point, however, virtually no research has examined territoriality in organizations. In three different papers, I address the issue of territoriality in organizations. In the first paper, I theoretically examine the concept of territoriality as it applies to organizations and discuss some potential antecedents and consequences of territoriality. In the second paper, I develop a survey measure of territoriality that can be used to empirically study territoriality in organizations. In the final paper, I conduct an empirical study to examine the consequences of territoriality in organizations. This project begins an important direction in studying and better understanding human behavior in organizations.
Near- and Far-Field Excitation of Topological Plasmonic Metasurfaces
Creators: name: Proctor, Matthew
name: Xiao, Xiaofei
name: Craster, Richard V.
name: Maier, Stefan A.
name: Giannini, Vincenzo
name: Huidobro, Paloma Arroyo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The breathing honeycomb lattice hosts a topologically non-trivial bulk phase due to the crystalline-symmetry of the system. Pseudospin-dependent edge states which emerge at the interface between trivial and non-trivial regions can be used for directional propagation of energy. Using the plasmonic metasurface as an example system, we probe these states in the near and far-field using a semi-analytical model. We give the conditions under which directionality is observed and show that it is source position dependent. By probing with circularly-polarized magnetic dipoles out of the plane, we first characterize modes along the interface in terms of the enhancement of source emission due to the metasurface. We then excite from the far-field with non-zero orbital angular momentum beams. The position dependent directionality holds true for all classical wave systems with a breathing honeycomb lattice. Our results show that a metasurface in combination with a chiral two-dimensional material could be used to guide light effectively on the nanoscale.
description: 24 pages, 4 figures main text, 4 figures appendix
Technological networks and the spread of computer viruses
Creators: name: Balthrop, Justin
name: Forrest, Stephanie
name: Newman, M. E. J.
name: Williamson, Matthew M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Computer infections such as viruses and worms spread over networks of contacts between computers, with different types of networks being exploited by different types of infections. Here we analyze the structures of several of these networks, exploring their implications for modes of spread and the control of infection. We argue that vaccination strategies that focus on a limited number of network nodes, whether targeted or randomly chosen, are in many cases unlikely to be effective. An alternative dynamic mechanism for the control of contagion, called throttling, is introduced and argued to be effective under a range of conditions.
description: 9 pages, 1 figure
Benedictus Thomae, Laterculi praesidum II. Tabulae synchronae / S P Q R. Senatores procuratesque Romani nonnulli quorum cursus honorum munerumve post volumina prosopographiae Imperii Romani edita aut innotuerunt aut melius noti sunt quomodo rei publicae o
Creators: name: Halfmann, Helmut
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Benedictus Thomae, Laterculi praesidum II. Tabulae synchronae, Fasc. 1. Bokförlaget Radius Göteborg 1972. 60 Seiten. S P Q R. Senatores procuratesque Romani nonnulli quorum cursus honorum munerumve post volumina prosopographiae Imperii Romani edita aut innotuerunt aut melius noti sunt quomodo rei publicae operam dederint breviter illustravit Benedictus Thomae p. p. Bokförlaget Radius Göteborg 1975. 99 Seiten.
description: Bonner Jahrbücher, Bd. 177 (1977): Bonner Jahrbücher
Theory of Fano-Kondo effect of transport properties through quantum dots
Creators: name: Maruyama, Isao
name: Shibata, Naokazu
name: Ueda, Kazuo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Fano-Kondo effect in zero-bias conductance is investigated based on a theoretical model for the T-shaped quantum dot. The conductance as a function of the gate voltage is generally characterized by a Fano asymmetric parameter q. With varying temperature the conductance shows a crossover between the high and low temperature regions compared with the Kondo temperature T_K: two Fano asymmetric peaks at high temperatures and the Fano-Kondo plateau inside a Fano peak at low temperatures. Temperature dependence of conductance is calculated numerically by the Finite temperature density matrix renormalization group method (FT-DMRG).
description: 8 pages, 7 figures
A Systems Model on Corruption and Anti-Corruption Reform: International, Domestic Pressure, and Government Strategies to Preserve the Status Quo
Creators: name: Pozsgai-Alvarez, Joseph
Publisher: name: figshare
Year: 2020
Subjects: subject: 160699 Political Science not elsewhere classified
subject: FOS: Political science

description: Most countries across the globe, particularly in the developing world, continue showing a failure to implement anti-corruption reforms in line with national and international commitments. This situation is especially disheartening when the amount of resources the international community has poured into them is considered, as well as the level of academic interest and production this issue has attracted. Thus, a core question has remained unanswered: What is holding back the fight against corruption? In the present study, a theoretical model to understand the support and opposition to anti-corruption reforms, and the identification of strategies available to international and domestic actors, is developed following a systems approach. The model suggests that different patterns of stress on the political system, together with the availability of a variety of strategies to stimulate political support, make governmental actors able to resist reform even on the face of societal and international pressure.
Effect of aerosol concentration on post-corona unipolar diffusion charging: ion density retro-controlled by aerosol space charge versus geometry of ion-aerosol mixing
Creators: name: Jidenko, N.
name: Bouarouri, A.
name: Borra, J.-P.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: Computational Biology

description: The influence of aerosol concentration on the charge per particle is investigated in post-DC corona diffusion chargers for particle diameter between 10 nm and 1 µm. Particles are charged as they pass through the charger volume by collection of ions; the ion concentration decreases along the same path due to unipolar space charge repulsion and collection on walls. With crossflow of ions and aerosols, the final mean charge per particle decreases by up to one order of magnitude with increasing aerosol concentration from 109 to 1011 m−3. The evolution of the ion density profile along particle trajectories with aerosol concentration is shown to be due to the consumption of ions by aerosol charging and to ion dispersion by unipolar space charge repulsion including ions and charged particles. Both are investigated using a simplified 1.5D model with axial symmetry and homogeneous mixing of ions and aerosols. It is shown that, for a given operating condition, the aerosol space charge is responsible for the modification of the spatial ion distribution and the related lower Ni×τ and charge per particle reported at higher aerosol concentration. From calculations, we define the maximal aerosol concentration to keep the mean charge per particle unaffected by aerosol space charge in the optimal case of homogeneous mixing of ion and aerosol. Finally, the comparison of different ion-aerosol mixing conditions highlights that an axial symmetry of the charger reduces the influence of aerosol space charge. This effect of aerosol concentration on the particle charge is critical for aerosol chargers devoted to electric mobility selection for size measurements or focused electro-deposition, as well as for concentration measurements as performed using emerging low cost sensors based on corona chargers.
Multi-wavelength observations of 2HWC J1928+177: dark accelerator or new TeV gamma-ray binary?
Creators: name: Mori, Kaya
name: An, Hongjun
name: Feng, Qi
name: Malone, Kelly
name: Prado, Raul R.
name: Schutt, Yve E.
name: Dingus, Brenda L.
name: Gotthelf, E. V.
name: Hailey, Charles J.
name: Hare, Jeremy
name: Kargaltsev, Oleg
name: Mukherjee, Reshmi
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: 2HWC J1928+177 is a Galactic TeV gamma-ray source detected by the High Altitude Water Cherenkov (HAWC) Observatory up to ~ 56 TeV. The HAWC source, later confirmed by H.E.S.S., still remains unidentified as a dark accelerator since there is no apparent supernova remnant or pulsar wind nebula detected in the lower energy bands. The radio pulsar PSR J1928+1746, coinciding with the HAWC source position, has no X-ray counterpart. Our SED modeling shows that inverse Compton scattering in the putative pulsar wind nebula can account for the TeV emission only if the unseen nebula is extended beyond r ~ 4 [arcmin]. Alternatively, TeV gamma rays may be produced by hadronic interactions between relativistic protons from an undetected supernova remnant associated with the radio pulsar and a nearby molecular cloud G52.9+0.1. NuSTAR and Chandra observations detected a variable X-ray point source within the HAWC error circle, potentially associated with a bright IR source. The X-ray spectra can be fitted with an absorbed power-law model with $N_{\rm H} = (9\pm3)\times10^{22}$ cm$^{-2}$ and $Γ_X = 1.6\pm0.3$ and exhibit long-term X-ray flux variability over the last decade. If the X-ray source, possibly associated with the IR source (likely an O star), is the counterpart of the HAWC source, it may be a new TeV gamma-ray binary powered by collisions between the pulsar wind and stellar wind. Follow-up X-ray observations are warranted to search for diffuse X-ray emission and determine the nature of the HAWC source.
description: accepted to ApJ, 8 pages, 7 figures
Additional file 1 of Frequent upregulation of G9a promotes RelB-dependent proliferation and survival in multiple myeloma
Creators: name: Zhang, Xi Yun
name: Rajagopalan, Deepa
name: Chung, Tae-Hoon
name: Hooi, Lissa
name: Toh, Tan Boon
name: Tian, Johann Shane
name: Masturah Bte Mohd Abdul Rashid
name: Sahib, Noor Rashidha Bte Meera
name: Mengjie Gu
name: Jhin Jieh Lim
name: Wang, Wilson
name: Wee Joo Chng
name: Sudhakar Jha
name: Chow, Edward Kai-Hua
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 1. Additional Figures S1-S4; Additional Table S1 and Additional Table S2.
Search for a Charmonium Assignment for the X(3872)
Creators: name: Olsen, Stephen L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report recent results on the properties of the X(3872) produced via the B-->KX(3872) decay process in the Belle detector. We compare these properties with expectations for possible charmonium-state assignments.
description: 10 pages, 5 figures, plenary talk at MESON2004, Krakow, June 2004
El ciclo político de la lucha contra la corrupción: La experiencia del Perú con su primera Comisión Nacional Anticorrupción
Creators: name: Pozsgai-Alvarez, Joseph
Publisher: name: figshare
Year: 2020
Subjects: subject: 160699 Political Science not elsewhere classified
subject: FOS: Political science

description: A pesar del progreso hecho en las últimas dos décadas, los actuales esfuerzos anticorrupción continúan luchando con problemas de implementación en determinados países. El presente estudio propone una aproximación a la implementación de políticas anticorrupción que considera la lucha contra las inconductas públicas en términos de sus posibles costos y beneficios en el liderazgo político. La existencia de un ciclo político para las iniciativas anticorrupción se propone y se prueba a través de un examen de la Comisión Nacional Anticorrupción de Perú entre los años 2001 y 2005. El análisis empírico respalda los principios teóricos, demostrando cómo el gobierno del Presidente Alejandro Toledo creó y luego retrocedió con la comisión anticorrupción, dados los intereses privados y las circunstancias políticas.
Peter Herz, Untersuchungen zum Festkalender der römischen Kaiserzeit nach datierten Weih- und Ehreninschriften
Creators: name: Freis, Helmut
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Peter Herz, Untersuchungen zum Festkalender der römischen Kaiserzeit nach datierten Weih- und Ehreninschriften. Dissertation Mainz 1975. 2 Bände, 604 Seiten.
description: Bonner Jahrbücher, Bd. 177 (1977): Bonner Jahrbücher
Ultracold Neutral Plasmas
Creators: name: Killian, Thomas C.
name: Chen, Y. C.
name: Gupta, P.
name: Laha, S.
name: Martinez, Y. N.
name: Mickelson, P. G.
name: Nagel, S. B.
name: Saenz, A. D.
name: Simien, C. E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Ultracold neutral plasmas are formed by photoionizing laser-cooled atoms near the ionization threshold. Through the application of atomic physics techniques and diagnostics, these experiments stretch the boundaries of traditional neutral plasma physics. The electron temperature in these plasmas ranges from 1-1000 K and the ion temperature is around 1 K. The density can approach $10^{11}$ cm$^{-3}$. Fundamental interest stems from the possibility of creating strongly-coupled plasmas, but recombination, collective modes, and thermalization in these systems have also been studied. Optical absorption images of a strontium plasma, using the Sr$^+$ ${^2S\_{1/2}} -> {^2P\_{1/2}}$ transition at 422 nm, depict the density profile of the plasma, and probe kinetics on a 50 ns time-scale. The Doppler-broadened ion absorption spectrum measures the ion velocity distribution, which gives an accurate measure of the ion dynamics in the first microsecond after photoionization.
description: 12th International Congress on Plasma Physics, 25-29 October 2004, Nice (France)
Energy Dissipation in Multi-Phase Infalling Clouds in Galaxy Halos
Creators: name: Murray, Stephen D.
name: Lin, Douglas N. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: During the formation of large galaxies, thermal instability leads to the formation of a population of cool fragments embedded within a background of tenuous hot gas. The hot gas attains a quasi-hydrostatic equilibrium. Although the cool clouds are pressure confined by the hot gas, they fall into the galactic potential, and their motion is subject to drag from the hot gas. The release of gravitational energy due to the infall of the cool clouds is first converted into their kinetic energy, and is subsequently dissipated as heat. The cool clouds therefore represent a potentially significant energy source for the background hot gas, depending upon the ratio of thermal energy deposited within the clouds versus the hot gas. In this paper, we show that most of dissipated energy is deposited in the tenuous hot halo gas, providing a source of internal energy to replenish losses in the hot gas through bremsstrahlung emission and conduction into the cool clouds. The heating from the motion of the cool clouds allows the multi-phase structure of the interstellar medium to be maintained.
description: 24 pages, 4 color figures, pdf format (figure quality reduced from the original for better download)
Richard Duncan-Jones, The Economy of the Roman Empire
Creators: name: Schneider, Hans-Christian
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Richard Duncan-Jones, The Economy of the Roman Empire. Quantitative Studies, Cambridge University Press 1974, XVI und 396 Seiten.
description: Bonner Jahrbücher, Bd. 177 (1977): Bonner Jahrbücher
Neutrino Masses: Shedding Light on Unification and Our Origin
Creators: name: Pati, Jogesh C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the first part of the talk, three key ideas proposed in the 1970s, and in particular their combined role in providing an understanding of the neutrino-masses as well as of the baryon-asymmetry of the universe, are expounded. The ideas in question include: (i) The symmetry SU(4)-color, which introduces the right-handed neutrino as an essential member of each family and also provides (rather reliably) the Dirac mass of the tau-neutrino by relating it to the top quark mass; (ii) SUSY grand unification together with the scale of the meeting of the three gauge couplings, which provides the scale for the superheavy Majorana masses of the RH neutrinos; and (iii) the seesaw mechanism, which combines the Dirac and the superheavy Majorana masses of the neutrinos obtained as above to yield naturally light LH neutrinos and in particular the right magnitude for m(nu-tau). In the second part, an attempt is made, based in part on recent works, to show how a set of diverse phenomena including (a) fermion masses, (b) neutrino oscillations, (c) CP and flavor violations, and (d) baryogenesis via leptogenesis can fit together neatly within a single predictive framework based on an effective symmetry group G(224) = SU(2)_L x SU(2)_R x SU(4)-color or SO(10), possessing supersymmetry. CP and flavor violations arising within this framework include enhanced rates (often close to observed limits) for mu -> e + gamma and tau -> mu + gamma and also measurable electric dipole moments of the neutron and the electron. Expectations arising within the same framework for proton decay are summarized at the end. It is stressed that the two notable missing pieces of this framework, which is otherwise so successful, are supersymmetry and proton decay.
description: An interesting remark by C. N. Yang on his long-held belief in massless neutrinos is added. Some new references on string-derivation of the G(224) symmetry are cited, and some typographical corrections are made
Lattice strain accommodation and absence of pre-transition phases in Ni$_{50}$Mn$_{25+x}$In$_{25-x}$
Creators: name: Nevgi, R.
name: Priolkar, K. R.
name: Righi, L.
name: Solzi, M.
name: Cugini, F.
name: Dias, E. T.
name: Nigam, A. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The stoichiometric Ni$_{50}$Mn$_{25}$In$_{25}$ Heusler alloy transforms from a stable ferromagnetic austenitic ground state to an incommensurate modulated martensitic ground state with a progressive replacement of In with Mn without any pre-transition phases. The absence of pre-transition phases like strain glass in Ni$_{50}$Mn$_{25+x}$In$_{25-x}$ alloys is explained to be the ability of the ferromagnetic cubic structure to accommodate the lattice strain caused by atomic size differences of In and Mn atoms. Beyond the critical value of $x$ = 8.75, the alloys undergo martensitic transformation despite the formation of ferromagnetic and antiferromagnetic clusters and the appearance of a super spin glass state.
description: Appearing in Journal of Physics: Condensed Matter
Oskar Ziegenaus und Gioia de Luca, Das Asklepieion 2. Der nördliche Temenosbezirk und angrenzende Anlagen in hellenistischer und frührömischer Zeit
Creators: name: Pinkwart, Doris
Publisher: name: Bonner Jahrbücher
Year: 2021

description: Rezension zu: Oskar Ziegenaus und Gioia de Luca, Das Asklepieion 2. Der nördliche Temenosbezirk und angrenzende Anlagen in hellenistischer und frührömischer Zeit. Mit einem Beitrag von A. Furtwängler. Altertümer von Pergamon XI 2. Verlag W. de Gruyter Berlin 1975. 145 Seiten, 120 Tafeln.
description: Bonner Jahrbücher, Bd. 177 (1977): Bonner Jahrbücher
Bacterial agent of bioterrorism
Creators: name: Gelalcha, Fikiru
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 310701
subject: Bacteriology
classificationCode: 320701
subject: Medical bacteriology
classificationCode: 320703
subject: Medical mycology
classificationCode: 320799
subject: Medical microbiology not elsewhere classified

description: SummaryBioterrorism literally means using microorganisms or infected samples to cause terror and panic in populations. Its purposefully release or threat of biologic agents (i.e. viruses, bacteria, fungi or their toxins) that cause disease and death among human population or food crops and livestock to terrorize a civilian population or influence the government. In other word, bacterial agent of bioterrorism means the bacterial strain or species which can be used as bioweapon for own purpose to attach others. Bioterrorism had already started 14 centuries before Christ. In world war I around 20th century Germany troops attempted to release bacillus anthrax and glanders which now known to cause by burkcholderia mallei among their enemies solders. Disease Control and Prevention have categorized in to three different categories, i.e. category A, category B, category C. thus, Category A is high bioterrorism agent ,category B get low priority and pathogen of water-food born disease category C for their future threat and emerging pathogen. hence, this seminar paper going to tell the most significant pathogenic , their character, route of transmission. This seminar paper focus specifically on Bacillus anthracis, Coxiella burnetii ,Tularemia ,Botulism ,Yersinia pestis, Brucellosis (Brucella Species) Glanders (Burkholderia mallei) ,Melioidosis (Burkholderia pseudomallei,Epsilon Toxin of Clostridium perfringen. Keeping in mind those sever and emerging essentially to discover new plan and policy of prevention and control among bacterial agent of bioterrorismThis seminar paper entitled bacterial agent of bioterrorism organized and prepared based on peer review journal, online platform, CDC publication, published medical books. Objective of the title is to gather information relevant to general characteristics, classification, history background, dissemination and disease cause, transmission route of bacterial agent of bioterrorism. Search engine was Google scholars, PubMed, science direct, American clinical journal, CDC publication. Citation and referencing method by Mendeley reference manager