cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
O wyborze metody porządkowania liniowego do oceny gospodarki odpadami w Polsce w ujęciu przestrzennym
On the Selection of the Linear Ordering Method for the Evaluation of Waste Management in Poland in Spatial Approach
Creators: name: Kukuła, Karol
name: Luty, Lidia
name: Kukuła, Karol
name: Luty, Lidia
Publisher: name: Unknown
Year: 2018
Subjects: subject: Research Methods/ Statistical Methods
subject: linear ordering method
subject: synthetic variable
subject: municipal waste
subject: metoda porządkowania liniowego
subject: cecha syntetyczna
subject: odpady komunalne

description: The aim of the article is to present the technique of selection of the method of the linear ordering of objects due to the level of a complex phenomenon, which is the status of waste management in voivodeships in Poland. For this purpose there were selected diagnostic variables describing the analyzed phenomenon and linear ordering methods were selected. Then, using the selection procedure for ordering methods, it was chosen the method of construction of a synthetic variable, that allowed to build ranking of voivodeships due to the level of the analyzed phenomenon. Then the voivodeships were divided into four groups: very high, high, average and low level of the discussed phenomenon. The research showed that the selection of procedure for the construction of synthetic variable affects the ranking of tested objects. The obtained ranking allows to conclude that waste management in Poland is regionally differentiated. / Synopsis. Celem artykułu jest przedstawienie techniki wyboru metody porządkowania liniowego obiektów ze względu na poziom zjawiska złożonego jakim jest stan gospodarki odpadami w województwach Polski. Do realizacji tego celu wyselekcjonowano cechy diagnostyczne opisujące badane zjawisko oraz wytypowano metody porządkowania liniowego. Następnie wykorzystując procedurę wyboru metody porządkowania dokonano wytypowania sposobu konstrukcji cechy syntetycznej, który pozwolił zbudować ranking województw ze względu na poziom analizowanego zjawiska. W dalszej kolejności dokonano podziału województw na cztery grupy: bardzo wysokiego, wysokiego, przeciętnego i niskiego poziomu rozwoju omawianego zjawiska. Badania pokazały, że wybór procedury konstrukcji cechy syntetycznej wpływa na ranking badanych obiektów. Otrzymany ranking pozwala sformułować wniosek, iż gospodarka odpadami w Polsce jest regionalnie zróżnicowana.
description: DOI: 10.22630/PRS.2018.18.2.46
Novel methodologies for the characterization and identification of proteins
Creators: name: Donohue, Maura Joyce
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences
classificationCode: 3401
subject: Analytical chemistry

description: The following report details the development of novel methods for characterizing proteins. In one case, a proteolytic microreactor column (PMC) was used to obtain a protein digest for peptide mapping by capillary electrophoresis (CE). A second project used CE to examine the isoform composition of prostate specific antigen (PSA). In addition, an off-line interface was designed to couple CE to a Matrix Assisted Laser Desorption Ionization-Time-of-Flight (MALDI-TOF) to obtain masses of separated species. The development of these methods will reduce the difficulties often encountered in measuring and characterizing proteins. In the first instance, a PMC was created by immobilizing trypsin onto an epoxy polymeric monolith within a fused silica capillary. The PMC was used to digest beta-casein for characterization by peptide mapping. beta-casein was perfused through the PMC, the effluent collected and separated by CE with detection by UV absorbance. The isoform composition of four preparations of PSA from different venders, PSA-ACT complex, and ACT were characterized using CE. The number of isoforms as well as their relative concentrations varied between samples illustrating the utility of this approach in assessing microheterogeneity. In the third project, glycoforms of PSA and human transferrin were analyzed by a combination of CE and off line MALDI-TOF-mass-spectrometry (MALDI-TOF-MS). Fractions collected directly from the CE were analyzed by MALDI-TOF-MS. Rapid off-line MALDI-TOF-MS on complex electropherograms is a powerful tool for characterization of proteins.
Smoothing of nonsmooth differential systems near regular-tangential singularities and boundary limit cycles
Creators: name: Novaes, Douglas D.
name: Vielma, Gabriel A. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34A26, 34A36, 34C23, 37G15

description: Understanding how tangential singularities evolve under smoothing processes was one of the first problem concerning regularization of Filippov systems. In this paper, we are interested in $C^n$-regularizations of Filippov systems around visible regular-tangential singularities of even multiplicity. More specifically, using Fenichel Theory and Blow-up Methods, we aim to understand how the trajectories of the regularized system transits through the region of regularization. We apply our results to investigate $C^n$-regularizations of boundary limit cycles with even multiplicity contact with the switching manifold.
Investigation of conceptual hail-formation models using airborne doppler radar
Creators: name: Hence, Deanna
name: Lee, Wen-chau
name: Nandi, Sreela
name: Morrill, Carrie
name: Reynolds, Amber
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2003

Analysis of the 17 April 1995 data collected by the National Center for Atmospheric Research airborne Electra Doppler Radar (ELDORA) during the Verification of the Origins of Rotation in Tornadoes Experiment (VORTEX) was used to investigate the wind structure hypothesized in conceptual models of hail growth in supercell storms proposed by Browning and Foote in 1976. For the first time Doppler radar data resolved a horizontal vortex tube that resembles Browning and Foote's model. This supercell produced 1.75 inch diameter hail and an F1 tornado. In conjunction with 3-D variational analysis, ELDORA's data resolved fine scale convective structures and internal circulations within the supercell storm. The wind field and vertical vorticity calculation confirmed the existence of a mesocyclone-strength cyclonic rotation that coincided with the reported tornado. The horizontal vorticity and wind field also confirmed the existence of an anticyclonic horizontal vortex tube with a vorticity comparable to the mesocyclone. Particle trajectory analyses confirm that the horizontal vortex tube does support hail formation, but strong updraft regions also support hail formation. A delicate balance between hailstone embryo size, location, trajectory, and storm structure was realized.
Hydrometer habits and their relation to the electrification of two tornadic storms as revealed by a polarimetric doppler radar
Creators: name: Martinez, Maribel
name: Ryzhkov, Alexander
name: Windham, Thomas
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2003

The relationship between lightning and storm severity has been a topic of much interest to the meteorological community. Implementation of detailed radar and lightning detection networks have enabled researchers to further investigate the relationship between the electrification and microphysics of severe storms. On May 8 and 9, 2003 the research community was able to utilize two such instruments when supercells entered the coverage area of the Norman, Oklahoma (KOUN) WSR-88D radar and the Oklahoma Lightning Mapping Array (LMA). The KOUN radar, in operation as part of a proof-of-concept of an operational polarimetric WSR-88D, allows researchers to distinguish between areas of rain and hail. The LMA measures the time-of-arrival of VHF radiation produced by individual lightning discharges and provides a more detailed look at lightning evolution. The research focused on the combination of data from these instruments. Temporal height sequences, radiation rates, and a combination of horizontal and vertical radar images were produced to determine the variations in lightning and hydrometeors before and during tornado touchdowns. Analysis of the May 8 and May 9, 2003 tornadic supercells showed that VHF radiation occurred in the frozen part of the storm and the majority of the VHF radiation occurred at the height of the updraft's vertical extension. Although definitive results on the relationship between lightning and tornadoes can not yet be determined due to the lack of continuous data, the tools needed to further investigate the relationship are available for further research.
Lancio di Jwst confermato per venerdì 24
Creators: Redazione Media Inaf
Publisher: name: Media Inaf
Year: 2021

Alle 13:20 ora italiana di venerdì 24 dicembre uno fra i countdown più lunghi della storia dell’astrofisica spaziale dovrebbe giungere al termine, e il razzo Ariane 5 con a bordo il prezioso carico da 10 miliardi di dollari potrà finalmente alzarsi in volo dallo spazioporto europeo di Kourou, nella Guyana francese
Spatio-Temporal Change of Support Modeling with R
Creators: name: Raim, Andrew M.
name: Holan, Scott H.
name: Bradley, Jonathan R.
name: Wikle, Christopher K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: Spatio-temporal change of support methods are designed for statistical analysis on spatial and temporal domains which can differ from those of the observed data. Previous work introduced a parsimonious class of Bayesian hierarchical spatio-temporal models, which we refer to as STCOS, for the case of Gaussian outcomes. Application of STCOS methodology from this literature requires a level of proficiency with spatio-temporal methods and statistical computing which may be a hurdle for potential users. The present work seeks to bridge this gap by guiding readers through STCOS computations. We focus on the R computing environment because of its popularity, free availability, and high quality contributed packages. The stcos package is introduced to facilitate computations for the STCOS model. A motivating application is the American Community Survey (ACS), an ongoing survey administered by the U.S. Census Bureau that measures key socioeconomic and demographic variables for various populations in the United States. The STCOS methodology offers a principled approach to compute model-based estimates and associated measures of uncertainty for ACS variables on customized geographies and/or time periods. We present a detailed case study with ACS data as a guide for change of support analysis in R, and as a foundation which can be customized to other applications.
Mortality and Healthcare: a Stochastic Control Analysis under Epstein-Zin Preferences
Creators: name: Aurand, Joshua
name: Huang, Yu-Jui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: Optimization and Control (math.OC)
subject: FOS: Economics and business
subject: FOS: Mathematics
subject: 91G10, 93E20

description: This paper studies optimal consumption, investment, and healthcare spending under Epstein-Zin preferences. Given consumption and healthcare spending plans, Epstein-Zin utilities are defined over an agent's random lifetime, partially controllable by the agent as healthcare reduces mortality growth. To the best of our knowledge, this is the first time Epstein-Zin utilities are formulated on a controllable random horizon, via an infinite-horizon backward stochastic differential equation with superlinear growth. A new comparison result is established for the uniqueness of associated utility value processes. In a Black-Scholes market, the stochastic control problem is solved through the related Hamilton-Jacobi-Bellman (HJB) equation. The verification argument features a delicate containment of the growth of the controlled morality process, which is unique to our framework, relying on a combination of probabilistic arguments and analysis of the HJB equation. In contrast to prior work under time-separable utilities, Epstein-Zin preferences facilitate calibration. The model-generated mortality closely approximates actual mortality data in the US and UK; moreover, the efficacy of healthcare can be calibrated and compared between the two countries.
FACTORS INFLUENCING INTENSITY OF ADOPTION OF INTEGRATED PEST MANAGEMENT PACKAGE AND PESTICIDE MISUSE IN THE CONTROL OF MANGO FRUIT FLY IN EMBU EAST SUB-COUNTY, KENYA
Creators: name: Korir, Josphat Kiplang'at
name: Korir, Josphat Kiplang'at
Publisher: name: Unknown
Year: 2016
Subjects: Crop Production/Industries
Farm Management

description: A Thesis Submitted to the Department of Agricultural Economics in Partial Fulfilment of the requirements for the award of a Master of Science Degree in Agricultural and Applied Economics, University of Nairobi. Advisors: Dr. Cecilia Ritho, Dr. Patrick Irungu, Dr. Hippolyte Affognon
Correlation of deep convection and lightning data with enhanced level of NO and NO₂ in the Upper Troposphere
Creators: name: Mattis, Damian
name: Massie, Steven
name: Petruzzi, Barbara
name: Smith, Jim
name: Drevon, Aztel
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2003

Nitrogen monoxide (NO) and nitrogen dioxide (NO₂), the components of NOX, are important trace gases influencing many atmospheric chemical processes. We correlated the presence of NOX in the upper troposphere with deep convection and lightning activity using three sources of archived data at two pressure levels: 121hPa and 100hPa. The Climate Diagnostics Center (CDC) provided Outgoing Longwave Radiation (OLR) data that indicated the location of deep convection, the Halogen Occultation Experiment (HALOE) experiment provided mixing ratios of NO and NO2 at 121 and 100hPa, and archived Optical Transient Detector (OTD) data provided lightning flash rates. The time frame of the data was from 1995 to mid-2002. These data were represented as bar graphs of OLR versus the mixing ratios of NOX, and also as latitude versus longitude graphs reflecting all longitudes and latitudes 30°N to 30°S (which included the tropical latitudes of 20°N - 20°S), showing geographical distributions of HALOE NOX and CDC OLR. The data were analyzed by visually comparing the location of intense convection (low OLR), to the location of high HALOE NOX. Low OLR corresponded to enhanced NOX mixing ratios, indicating that convection was correlated to enhanced NOX in the upper troposphere. Lightning flash rates were located predominantly over land and this correlated with enhanced NOX mixing ratios over South America, the Maritime continent (Indonesia), and Africa; the same three regions that showed the anti-correlation of low OLR to high NOX.
Improving the method of extracting aerosol optical depth information from multi spectral solar data
Creators: name: Medina, Carlos
name: Augustine, John
name: Mapes, Brian
name: Weber, William
name: Musgrave, Kate
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2003

Over the past decade, a network of Multifilter Rotating Shadowband Radiometers (MFRSRs) have been monitoring aerosol properties across the nation. The process of extracting aerosol data from the MFRSR's reading is very lengthy and difficult, making it very timely to produce results. A novel automated method of computing aerosol optical depth (AOD) was developed and explained in "A New Automated Method of MFRSR Based Optical Depth Analysis" (Augustine and Medina 2003). This method has been further improved upon in order to increase the accuracy and amount of information retrieved from MFRSR readings. The algorithm was improved by including all six channels of the MFRSR, instead of just one; improving the calibration-method; accounting for the variability in ozone and its effects on AOD retrievals; and improving error estimation. These changes resulted in improved discrimination of aerosol signals from cloud contamination, and useful estimates of instrumental drift and degradation over time. These and other improved automatic data processing procedures, result in a better and more timely AOD data product, which will be useful for satellite calibration, modeling, and climatological studies. The importance and usefulness of how this algorithm is applied will be of increasing demand due to the advancement of technology and the increasing amount of pollution in the atmosphere.
Anthophora (Micranthophora) parkeri Orr 2017
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: Anthophora (Micranthophora) parkeri Orr, 2017
[Holotype: BBSL; ♂ Corn Springs Campground, 0.4 km ESE, Corn Springs Wash, California, USA; April 9, 2014]
This species of Micranthophora occurs in the Sonoran and Mojave Deserts and specilizes on pollen from plants in the family Asteraceae, especially Bebbia juncea Greene (Orr et al. 2018). In BC, a single male specimen was collected south of San Felipe in 1976. The BBPT also collected one female and male in the Lower Colorado Desert in April 2023 (MABC). See fig. 75.
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 132, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
c-Fos levels in Lewis and Fischer rat strains following a dose of morphine or cocaine shown to differentially induce conditioned taste aversions
Creators: name: Grabus, Sheri D.
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 52
subject: Psychology
subject: FOS: Psychology
classificationCode: 5202
subject: Biological psychology

description: Lewis (LEW) and Fischer (F344) rats differ in a variety of measures. For example, LEW rats are more sensitive to drug reward, as indicated by behavioral (Martin et al., 1999) and molecular assays (Selim & Bradberry, 1996). These strains are also differentially sensitive to drugs within conditioned taste aversion (CTA) learning, with LEW rats showing stronger cocaine- (Glowa, Shaw & Riley, 1994) and F344 rats demonstrating greater morphine- (Lancellotti, Bayer, Glowa, Houghtling & Riley, 2001) induced CTAs. Given that molecular differences between LEW and F344 rats parallel their differences in drug reward, Experiment 1 of the present study examined whether molecular differences between these strains may be related to differential CTA learning. LEW and F344 rats were injected with morphine, cocaine (32 mg/kg each) or their vehicles and tested for c-Fos expression in CTA-associated brain regions. Because these strains demonstrate differential reward (see above) and locomotion (Lipska & Weinberger, 1995) responsivities, Fos within the nucleus accumbens (NAc) and caudate putamen (CPu) was also assessed. The present results generally indicated that Fos in CTA-associated regions was greater for F344 rats following morphine and for LEW rats following cocaine, which paralleled the differences within CTA learning (see above). Fos levels within the NAc were greater in LEW rats following either drug (compared to saline levels), consistent with studies indicating that LEW (compared to F344) rats find morphine and cocaine more rewarding. In contrast, no strain differences were found in Fos levels within the CPu, indicating that differences in dopaminergic function were specific to the NAc. Because experiments have shown differential neurohormone responsivities in LEW and F344 rats (Simar, Sapier & Goeders, 1996), Experiment 2 examined corticosterone levels in animals from Experiment 1 to determine whether differential Fos levels were related to different stress responsivities to saline, morphine or cocaine. The present experiment indicated that differences in stress responsivities may have played a role in differential Fos levels following morphine, but not saline or cocaine.
Modulation of Thermoelectric Power of Individual Carbon Nanotubes
Creators: name: Small, Joshua P.
name: Perez, Kerstin M.
name: Kim, Philip
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Thermoelectric power (TEP) of individual single walled carbon nanotubes (SWNTs) has been measured at mesoscopic scales using a microfabricated heater and thermometers. Gate electric field dependent TEP-modulation has been observed. The measured TEP of SWNTs is well correlated to the electrical conductance across the SWNT according to the Mott formula. At low temperatures, strong modulations of TEP were observed in the single electron conduction limit. In addition, semiconducting SWNTs exhibit large values of TEP due to the Schottky barriers at SWNT-metal junctions.
description: to be published in Phys. Rev. Lett
Additional file 2 of The impact of the Adolescent Girls Empowerment Program (AGEP) on short and long term social, economic, education and fertility outcomes: a cluster randomized controlled trial in Zambia
Creators: name: Austrian, Karen
name: Soler-Hampejsek, Erica
name: Behrman, Jere R.
name: Digitale, Jean
name: Hachonda, Natalie Jackson
name: Bweupe, Maximillian
name: Hewett, Paul C.
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 2. Results from a probit regression for attrition.
The length of day in the past
Creators: name: Arbab, Arbab I.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We have found an empirical law for the variation of the length of the Earth's day with geologic time employing Wells's data. We attribute the lengthening of the Earth's day to the present cosmic expansion of the Universe. The prediction of law has been found to be in agreement with the astronomical and geological data. The day increases at a present rate of 0.002 sec/century. The length of the day is found to be 6 hours when the Earth formed. We have also found a new limit for the value of the Hubble constant and the age of the Universe.
description: 6 LateX Pages, 1 eps figure
TECHNICAL EFFICIENCY OF SUGARCANE MONOCULTURE AND SUGARCANE- SOYBEAN INTERGRATION AMONG SMALLHOLDER FARMERS IN AWENDO SUB-COUNTY, KENYA
Creators: name: Okoth, Ouko Kevin
name: Okoth, Ouko Kevin
Publisher: name: Unknown
Year: 2018
Subjects: Crop Production/Industries
Productivity Analysis

description: A Thesis Submitted to the Graduate School in Partial Fulfilment for the Requirements of the Award of Master of Science Degree in Agricultural and Applied Economics of Egerton University. Advisors: Dr. Mary C. Mutai, Dr. Hillary K. Bett
Top condensation model: a step towards the correct prediction of the Higgs mass
Creators: name: Osipov, A. A.
name: Hiller, B.
name: Blin, A. H.
name: Palanca, F.
name: Moreira, J.
name: Sampaio, M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A realization of the composite Higgs scenario in the context of the effective model with the $SU(2)_L\times U(1)_R$ symmetric four-Fermi interactions proposed by Miransky, Tanabashi and Yamawaki is studied. The model implements Nambu's mechanism of dynamical electroweak symmetry breaking leading to the formation of $\bar tt$ and $\bar bb$ quark condensates. We explore the vacuum structure and spectrum of the model by using the Schwinger proper-time method. As a direct consequence of this mechanism, the Higgs acquires a mass in accord with its experimental value. The present prediction essentially differs from the known overestimated value, $m_χ= 2m_t$, making more favourable the top condensation scenario presented here. The mass formulas for the members of the second Higgs doublet are also obtained. The Nambu sum rule is discussed. It is shown that the anomalous $U(1)_A$ symmetry breaking modifies this rule at next to leading order in $1/N_c$.
description: 14 pages, version to appear in EPJC
Anthophora (Micranthophora) phenax
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: Anthophora (Micranthophora) phenax (Cockerell, 1898)
[Holotype: USNM; ♂ College Farm, Mesilla Park, New Mexico, USA; April 13, 1898]
Anthophora phenax is distributed throughout the Sonoran and Mojave Deserts and specializes on pollen from plants in the family Boraginaceae (Orr et al. 2018). This species is known by a single female collected in the Lower Colorado Desert in San Felipe, BC, in April 1963 (Orr et al. 2018). See fig. 76.
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 134, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
CO-OPERATIVE MEMBERS’ DECISIONS ON COFFEE MARKETING CHANNELS AND FACTORS INFLUENCING THEIR CHOICES IN ROMBO DISTRICT, TANZANIA
Creators: name: Mrema, Mathew Jerome
name: Mrema, Mathew Jerome
Publisher: name: Unknown
Year: 2017
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: A DISSERTATION SUBMITTED IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN AGRICULTURAL AND APPLIED ECONOMICS OF SOKOINE UNIVERSITY OF AGRICULTURE. MOROGORO, TANZANIA. Advisor: Prof. E. R. Mbiha
The design, building and testing of a calibration device for the atmospheric measurement of trace chemical species
Creators: name: Morrison, Okason
name: Mauldin, Lee
name: Lamarque, Jean-Francois
name: Worster, Cindy
name: Goyea, Olusegun
name: Singleton, Tamara
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2003

Calibration is needed for the quantification of values obtained from any instrument used for scientific measurements. In particular, when using Chemical Ionization Mass Spectrometry (CIMS) for atmospheric determinations, instrument response can be dependent upon many different atmospheric variables (e.g.: temperature, pressure, and humidity). Since these conditions are usually uncontrollable and may vary over time or with changes in location, a quick and portable method of periodically recalibrating is necessary to account for changes in atmospheric conditions. A calibration device was constructed for use in conjunction with a CIMS system for the measurement of trace species in the atmosphere. The calibration device is designed to hold four permeation tubes, each with known emission rates at a particular temperature. The permeant gas, when mixed with a steady flow of clean air provides a known concentration of the trace species of interest. This gaseous mixture is then diluted by injection into a stream of ambient air, after which it is analyzed by the CIMS system. The resulting mass spectra indicate an ion signal proportional to the concentration in the airflow of the trace species being studied. By systematically repeating this process at different dilutions, a calibration curve of signal versus concentration can be constructed. Ethanol (CH3CH2OH) calibration curves were constructed once every 30 minutes for an 8 hour measurement. Results for ethanol showed a linear relationship between signal and concentration over the investigated range of 1 to 10 parts per billion by volume (ppbv). This relationship can be used to equate ethanol signals measured in ambient air to ethanol concentrations.
A steady Euler flow on the 3-sphere and its associated Faddeev-Skyrme solution
Creators: name: Slobodeanu, Radu
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We present a steady Euler flow on the round 3-sphere whose velocity vector field has the property of having two independent first integrals, being tangent to the fibres of an almost submersion onto the 2-sphere. This submersion turns out to be a critical point for the quartic Faddeev-Skyrme model with a standard potential.
description: 9 pages; typos corrected
Non-Factorizable Phases, Yukawa Textures and the Size of sin (2 beta)
Creators: name: Branco, G. C.
name: Rebelo, M. N.
name: Silva-Marcos, J. I.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We emphasize the crucial r\^ ole played by non-factorizable phases in the analysis of the Yukawa flavour structure performed in weak bases with Hermitian mass matrices and with vanishing $(1,1)$ entries. We show that non-factorizable phases are important in order to generate a sufficiently large $\sin 2 β$. A method is suggested to reconstruct the flavour structure of Yukawa couplings from input experimental data both in this Hermitian basis and in a non-Hermitian basis with a maximal number of texture zeros. The corresponding Froggatt--Nielsen patterns are presented in both cases.
description: 15 pages, 3 figures
EXAMINING THE INVERSE RELATIONSHIP BETWEEN FARM SIZE AND EFFICIENCY IN TANZANIAN AGRICULTURE
Creators: name: Msangi, Haji Athumani
name: Msangi, Haji Athumani
Publisher: name: Unknown
Year: 2017
Subjects: Farm Management
Production Economics

description: A DISSERTATION SUBMITTED IN PARTIAL FULLFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN AGRICULTURAL AND APPLIED ECONOMICS OF SOKOINE UNIVERSITY OF AGRICULTURE. MOROGORO, TANZANIA. Advisor: Prof. Ntengua S. Y. Mdoe
On proximal relations in transformation semigroups arising from generalized shifts
Creators: name: Shirazi, Fatemah Ayatollah Zadeh
name: Fallahpour, Amir
name: Mardanbeigi, Mohammad Reza
name: Ahmadabadi, Zahra Nili
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 54H20

description: For a finite discrete topological space $X$ with at least two elements, a nonempty set $Γ$, and a map $φ:Γ\toΓ$, $σ_φ:X^Γ\to X^Γ$ with $σ_φ((x_α)_{α\inΓ})= (x_{φ(α)})_{α\inΓ}$ (for $(x_α)_{α\inΓ}\in X^Γ$) is a generalized shift. In this text for $\mathcal{S}=\{σ_ψ:ψ\inΓ^Γ\}$ and $\mathcal{H}=\{σ_ψ: Γ\mathop{\rightarrow}\limits^ψΓ$ is bijective$\}$ we study proximal relations of transformation semigroups $(\mathcal{S},X^Γ)$ and $(\mathcal{H},X^Γ)$. Regarding proximal relation we prove: \[P({\mathcal S},X^Γ)=\{((x_α)_{α\inΓ},(y_α)_{α\inΓ}) \in X^Γ\times X^Γ: \existsβ\inΓ\:(x_β=y_β)\}\] and $P({\mathcal H},X^Γ)\subseteq \{((x_α)_{α\inΓ},(y_α)_{α\inΓ}) \in X^Γ\times X^Γ: \{β\inΓ:x_β=y_β\}$ is infinite~$\}\cup\{ (x,x):x\in \mathcal{X}\}$. \\ Moreover, for infinite $Γ$, both transformation semigroups $({\mathcal S},X^Γ)$ and $({\mathcal H},X^Γ)$ are regionally proximal, i.e., $Q({\mathcal S},X^Γ)=Q({\mathcal H},X^Γ)=X^Γ\times X^Γ$, also for sydetically proximal relation we have $L({\mathcal H},X^Γ)=\{((x_α)_{α\inΓ},(y_α)_{α\inΓ}) \in X^Γ\times X^Γ: \{γ\inΓ:x_γ\neq y_γ\}$ is finite$\}$.
description: 8 pages
HOUSEHOLD DEMAND FOR COMMON BEANS IN LILONGWE DISTRICT OF MALAWI
Creators: name: Msukwa, Wupe
name: Msukwa, Wupe
Publisher: name: Unknown
Year: 2017
Subjects: Consumer/Household Economics
Crop Production/Industries
Demand and Price Analysis

description: A THESIS SUBMITTED TO THE FACULTY OF DEVELOPMENT STUDIES IN PARTIAL FULFILMENT OF THE REQUIRMENTS FOR AWARD OF THE DEGREE OF MASTER OF SCIENCE IN AGRICULTURAL AND APPLIED ECONOMICS LILONGWE UNIVERSITY OF AGRICULTURE AND NATURAL RESOURCES BUNDA CAMPUS. Advisors: Prof. J. H. Mangisoni, Assoc. Prof. L. D. Mapemba, Dr. T. Chilongo
The structure of multigranular rough sets
Creators: name: Järvinen, Jouni
name: Radeleczki, Sándor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Rings and Algebras (math.RA)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We study multigranulation spaces of two equivalences. The lattice-theoretical properties of so-called "optimistic" and "pessimistic" multigranular approximation systems are given. We also consider the ordered sets of rough sets determined by these approximation pairs.
description: Keywords: equivalence relation, multigranular approximation, definable set, rough set, coherence, tolerance relation, irredundant covering, atomistic Boolean lattice, completely distributive lattice, Dedekind-MacNeille completion
A COMPARATIVE ANALYSIS OF BUSINESS MODELS OF TWO-WHEEL TRACTORS IN BABATI DISTRICT, MANYARA REGION, TANZANIA
Creators: name: Mbesa, Baraka
name: Mbesa, Baraka
Publisher: name: Unknown
Year: 2017
Subjects: Agribusiness
Research and Development/Tech Change/Emerging Technologies

description: A DISSERTATION SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN AGRICULTURAL AND APPLIED ECONOMICS OF SOKOINE UNIVERSITY OF AGRICULTURE. MOROGORO, TANZANIA. Advisor: Dr. A. Temu
c-Fos levels in Lewis and Fischer rat strains following a dose of morphine or cocaine shown to differentially induce conditioned taste aversions
Creators: name: Grabus, Sheri D.
Publisher: name: American University
Year: 2023

description: Lewis (LEW) and Fischer (F344) rats differ in a variety of measures. For example, LEW rats are more sensitive to drug reward, as indicated by behavioral (Martin et al., 1999) and molecular assays (Selim & Bradberry, 1996). These strains are also differentially sensitive to drugs within conditioned taste aversion (CTA) learning, with LEW rats showing stronger cocaine- (Glowa, Shaw & Riley, 1994) and F344 rats demonstrating greater morphine- (Lancellotti, Bayer, Glowa, Houghtling & Riley, 2001) induced CTAs. Given that molecular differences between LEW and F344 rats parallel their differences in drug reward, Experiment 1 of the present study examined whether molecular differences between these strains may be related to differential CTA learning. LEW and F344 rats were injected with morphine, cocaine (32 mg/kg each) or their vehicles and tested for c-Fos expression in CTA-associated brain regions. Because these strains demonstrate differential reward (see above) and locomotion (Lipska & Weinberger, 1995) responsivities, Fos within the nucleus accumbens (NAc) and caudate putamen (CPu) was also assessed. The present results generally indicated that Fos in CTA-associated regions was greater for F344 rats following morphine and for LEW rats following cocaine, which paralleled the differences within CTA learning (see above). Fos levels within the NAc were greater in LEW rats following either drug (compared to saline levels), consistent with studies indicating that LEW (compared to F344) rats find morphine and cocaine more rewarding. In contrast, no strain differences were found in Fos levels within the CPu, indicating that differences in dopaminergic function were specific to the NAc. Because experiments have shown differential neurohormone responsivities in LEW and F344 rats (Simar, Sapier & Goeders, 1996), Experiment 2 examined corticosterone levels in animals from Experiment 1 to determine whether differential Fos levels were related to different stress responsivities to saline, morphine or cocaine. The present experiment indicated that differences in stress responsivities may have played a role in differential Fos levels following morphine, but not saline or cocaine.
Sterilization of urologic instruments
Creators: name: Creator not identified.
Publisher: name: DigitalHub. Galter Health Sciences Library & Learning Center
Year: 1940
Subjects: subject: Sterilization
subject: Urologic Instruments
subject: Sterilization
subject: Infection Control
subject: Surgical Instruments
subject: Urologic Surgical Procedures

description: Instructions on how to sterilize instruments before and after urological operations.
High contrast optical modulation by surface acoustic waves
Creators: name: Krishnamurthy, S.
name: Santos, P. V.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Numerical Calculations are employed to study the modulation of light by surface acoustic waves (SAWs) in photonic band gap (PBG) structures. The on/off contrast ratio in PBG switch based on optical cavity is determined as a function of the SAW induced dielectric modulation. We show that these structures exhibit high contrast ratios even for moderate acousto-optic coupling
description: 7 manuscript pages and 5 figures; submitted to Applied Physics Letters on April 24, 2003
Surface current variability in the Tropical Atlantic
Creators: name: Muñoz, Ernesto
name: Adamec, David
name: Busalacchi, Antonio
name: Weis-Taylor, Pat
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2003

It is important to understand the tropical oceanic circulation because of its effects on global climate. The bifurcation of the South Equatorial Current (SEC) might have significant effects on regional climates as a result of the contributions of mass and heat flowing north or south. The objectives of this study were to determine the seasonal variability of the surface currents of the tropical Atlantic and to analyze the bifurcation of the Atlantic SEC. The Ocean Surface Current Analyses – Real time (OSCAR) data set of velocity was analyzed in addition to dynamic height from the World Ocean Atlas and wind stress from Special Sensor Microwave Imager (SSM/I). OSCAR data were used to compute the seasonal climatology of the surface current velocity. The total velocity was computed by adding a geostrophic component, an Ekman component and a buoyancy gradient component. From the SSM/I wind stress, the curl was computed and lines where the wind stress curl was zero were identified as boundaries of the oceanic gyres. The coastal split of dynamic height contours was used as an estimate of the bifurcation of the SEC. The SEC was observed as having two branches with different behavior throughout the year. The annual means of dynamic height and wind stress curl indicate a region of bifurcation south of the equator between 10°S and 18°S. For March, the geostrophic velocity shows divergence close to the coast indicating a bifurcation while the total velocity does not show divergence south of the equator.
K--12 voucher programs and education policy: An exploratory study of policymaker attitudes and opinions
Creators: name: Laitsch, Daniel Alan
Publisher: name: American University
Year: 2023

description: Since the 1983 report, A Nation at Risk, the performance of public schools has been increasingly scrutinized, and a variety of reforms designed to boost student achievement enacted. Among the reforms discussed, much attention has been focused on increasing educational choice and competition through vouchers. Many questions remain regarding voucher proposals and it is critical that policy makers and parties with a vested interest consider the wide array of issues posed by these systems. This study focused on specific states where education reforms have led to the creation or attempted creation of voucher programs in an effort to answer five questions: (1) What role do policymakers feel vouchers play in the larger context of reform? (2) How do policymakers react to specific policy arguments about vouchers? (3) How does the philosophy of a policymaker relate to their voucher attitudes? (4) How do demographic traits of policymakers relate to their educational philosophy? (5) How do demographic traits of policymakers relate to their views on vouchers?; In many instances, expectations remained true: Republican's were the strongest backers of voucher proposals, market arguments and accountability mechanisms were a concern to voucher advocates, and equity and resource allocation were primary concerns of antivoucher respondents. In other instance the findings suggest underlying discomfort with, and feelings of alienation from, the current system, as well as concerns about the impact of vouchers on the composition and structure of both public and private schools.
A Conway-Maxwell-Multinomial Distribution for Flexible Modeling of Clustered Categorical Data
Creators: name: Morris, Darcy Steeg
name: Raim, Andrew M.
name: Sellers, Kimberly F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Categorical data are often observed as counts resulting from a fixed number of trials in which each trial consists of making one selection from a prespecified set of categories. The multinomial distribution serves as a standard model for such clustered data but assumes that trials are independent and identically distributed. Extensions such as Dirichlet-multinomial and random-clumped multinomial can express positive association, where trials are more likely to result in a common category due to membership in a common cluster. This work considers a Conway-Maxwell-multinomial (CMM) distribution for modeling clustered categorical data exhibiting positively or negatively associated trials. The CMM distribution features a dispersion parameter which allows it to adapt to a range of association levels and includes several recognizable distributions as special cases. We explore properties of CMM, illustrate its flexible characteristics, identify a method to efficiently compute maximum likelihood (ML) estimates, present simulations of small sample properties under ML estimation, and demonstrate the model via several data analysis examples.
The remote influence of tropical Atlantic sea surface temperatures on the tropical Pacific
Creators: name: Noble, Erik
name: Tribbia, Joseph
name: Emmons, Louisa
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2003

Global climate models are tools that allow scientists to simulate the climate conditions of the past, present, and future to a reasonable degree with the exception that climate model projections contain biases. Biases exist such as differences between modeled temperatures and observed temperatures. This project is a sensitivity study that examines the biases contained in modeled Tropical Pacific sea surface temperatures (SSTs) by exploring the remote influence that the Tropical Atlantic may have upon the Tropical Pacific basin. We simulate several different scenarios on the time scale of a year that were induced with observed Tropical Atlantic SSTs by using a fully coupled-climate model. These scenarios include a Pacific warm event, cold event, and neutral event. The results indicate that there is a strong tropical Pacific SST impact. Comments to the robustness of the tropical Pacific SST impact with regards to the different scenarios compared to control experiments are provided with this coupled-climate model sensitivity study.
K--12 voucher programs and education policy: An exploratory study of policymaker attitudes and opinions
Creators: name: Laitsch, Daniel Alan
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: Since the 1983 report, A Nation at Risk, the performance of public schools has been increasingly scrutinized, and a variety of reforms designed to boost student achievement enacted. Among the reforms discussed, much attention has been focused on increasing educational choice and competition through vouchers. Many questions remain regarding voucher proposals and it is critical that policy makers and parties with a vested interest consider the wide array of issues posed by these systems. This study focused on specific states where education reforms have led to the creation or attempted creation of voucher programs in an effort to answer five questions: (1) What role do policymakers feel vouchers play in the larger context of reform? (2) How do policymakers react to specific policy arguments about vouchers? (3) How does the philosophy of a policymaker relate to their voucher attitudes? (4) How do demographic traits of policymakers relate to their educational philosophy? (5) How do demographic traits of policymakers relate to their views on vouchers?; In many instances, expectations remained true: Republican's were the strongest backers of voucher proposals, market arguments and accountability mechanisms were a concern to voucher advocates, and equity and resource allocation were primary concerns of antivoucher respondents. In other instance the findings suggest underlying discomfort with, and feelings of alienation from, the current system, as well as concerns about the impact of vouchers on the composition and structure of both public and private schools.
PROFIT EFFICIENCY OF SMALLHOLDER GROUNDNUT FARMERS IN EASTERN ZAMBIA
Creators: name: Chikobola, Musaka Mulanga
name: Chikobola, Musaka Mulanga
Publisher: name: Unknown
Year: 2017
Subjects: Crop Production/Industries
Production Economics
Productivity Analysis

description: A THESIS SUBMITTED TO THE FACULTY OF DEVELOPMENT STUDIES IN PARTIAL FULFILMENT OF REQUIREMENTS FOR AWARD OF THE DEGREE OF MASTER OF SCIENCE IN AGRICULTURAL AND APPLIED ECONOMICS LILONGWE UNIVERSITY OF AGRICULTURE AND NATURAL RESOURCES BUNDA CAMPUS. Advisors: Prof. Julius H. Mangisoni, Prof. Davies H Ng'ong'ola, Prof. Gelson Tembo
Particelle a sei quark previste dai supercomputer
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2021

Alcuni ricercatori giapponesi della Riken, grazie all’impiego di supercomputer per svolgere calcoli di cromodinamica quantisica, hanno previsto l’esistenza di una particella esotica composta da sei quark charm. Lo studio potrebbe approfondire la nostra comprensione di come i quark si combinano per formare i nuclei atomici. Media Inaf ha intervistato Stefano Marcellini dell’Infn, esperto di fisica delle particelle