129 research outputs found

    Perspectives on retail payments fraud

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    Payment systems ; Fraud

    Landlord-tenant relationships in Tennessee

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    The purpose of this study is to test tim validity for Tennessee conditions of a check list of 17 recommendations proposed by the Division of State and Local Planning, Bureau of Agricultural Economics.¹ The list of recommendations as first proposed is as follows: 1. Leases drawn for a long term of years, 2. Automatic continuation clause in leases, 3. Six to eight months notice of termination or renewal, 4. Compensation by landlord to tenant for termination of lease without good cause. 5. Compensation by landlord to tenant for improvements made by tenant and not exhausted at the time the tenant moves, 6. Compensation by tenant to landlord for any damage or deterioration to landlord’s property, 7. Settlement of differences between landlord and tenant by arbitration, 8. Limitation of landlord’s lien to the production of the farm during current year, 9. Elimination of bonus or privilege rent, 10. Increasing the use of stock share leases, 11. Better crop share leases adapted to conservational rotations, 12. Combination crop share and livestock share leases, 13. Giving tenant option on farm in case of sale, 14. Encouragement of home ownership through Government aid to farm operators either by long-term credit at low interest or by the purchase of farms by Government for sale to tenants, with payments adjusted to parity, 15. Discouraging the ownership of rented farms by absentee landlords through differential taxation based on acreage or some other feasible means, 16. Control of speculation in land by taxes on profits made through the purchase and resale of farm property, and 17. Clarify the position of the sharecropper by making all sharecroppers: (1) tenants, or (2) farm laborers

    Lunar Ice Cube: Development of a numerical model for attitude control

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    https://scholarworks.moreheadstate.edu/student_scholarship_posters/1008/thumbnail.jp

    Feasibility of Long Range Wide Area Network (LoRaWAN) Technology for LEO Applications

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    Long Range (LoRa) is a widely used technology for terrestrial communications and is increasingly utilized for space related applications. On the ground, the LoRaWAN protocol allows gateways connected to the internet to serve as transceivers for any eligible end device in range of LoRa modulated signal. Certified gateways are produced by a variety of manufacturers with a range of capabilities, and publicly available networks contain thousands of gateways distributed around the world. Now, we propose to utilize the worldwide network of LoRaWAN gateways as a distributed ground station network capable of significantly reducing delays in link availability for a satellite in LEO. Using a COTS transceiver based on the LoRaWAN protocol, a module will be developed that functions as an end device in network architecture. As a half-duplex communication subsystem it will be capable of sending small packages of selective telemetry and receiving specific commands for essential functions, and will have worldwide compatibility in the range of 868 MHz to 915 MHz. Currently the module is planned to function as the secondary communication subsystem on the Cosmic X-Ray Background NanoSat-3 (CXBN-3) satellite, a 2U CubeSat mission under construction by students at Morehead State University to explore the diffuse emission of hard X-rays in the Cosmic X-Ray Background (CXB). This paper will describe the feasibility of LoRaWAN technology for LEO applications through the evaluation of a LoRaWAN space-based end device, its development based on a COTS transceiver, and validation testing to simulate LEO range by using LoRaWAN commercial gateways

    Lunar IceCube: Development of Thermal Management System

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    Design of a thermal control system for Lunar IceCube faced several challenges. Firstly, components have vastly different requirements for operational temperature range and heat dissipation. Secondly, the spacecraft does not have enough external surface to reject waste heat by traditionally designed thermal control system. Thirdly, integration of components into a single thermal control system represents a challenge due to several factors: namely, thermal interference between components due to high packing density; incompatibility of some components which are made by different vendors. The paper discusses a successful solution of the mentioned above problems. It shows that customization of thermal control systems for each group of components with similar thermal requirements enables successful resolution of thermal challenges

    Pupillometric Assessment of Small Doses of Opioid in a Pediatric Population

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    According to the CDC, opioid prescriptions in the United States have more than tripled from 1999-2014, which has correlated with the staggering increase in opioid-involved drug overdose deaths. This pattern of prescription is thought to be a major contributory factor to the increase in drug overdose in America, as four out of five new heroin users started by misusing prescription painkillers. Providers need the means to objectively monitor analgesic efficacy of treatment in patients with pain to mitigate unnecessary analgesic prescribing. It is well established that mu opioid agonists like morphine cause miosis, an effect to which tolerance does not occur. This suggests a utility in using pupil size and responsiveness as a pharmacokinetic analogue of bioavailability. An infrared pupillometer is a device that produces a short light stimulus and subsequently measures parameters of the pupillary light reflex (PLR) including maximum and minimum pupil size (MAX, MIN), maximum constriction velocity (MCV), latency period before constriction onset (LAT), change in pupil size (DELTA), and average constriction velocity (ACV). Current data supports the efficacy of using infrared pupillometry to detect high dose opioid presence, but no research exists judging its efficacy in monitoring low dose therapeutic levels. We enrolled 15 patients between the ages of 7 and 18 on the pain medicine service receiving low dose opioids on patient controlled analgesia (PCA). The pupillometer was used to take a baseline PLR, and repeated measures were taken 10 and 15-minutes post PCA dose infusion. We found that the pupil size at 10 and 15-minute time points were significantly smaller than the baseline for the parameters MAX (p=.0016, p=.0010) and MIN (p=.0250, p=.0070). Additionally, it was found that LAT was significantly longer from baseline at the 15-minute measure (p=.0350), and there was a significant difference between the 10 and 15-minute time points for the MIN (p=0.0251). This evidence supports the sensitivity of the pupillometer in evaluating opioid activity. Furthermore, in concordance with previous research, the MIN is significantly correlated with opioid concentration dose-dependently across the 15-minute measurement window. Before applying the pupillometer to clinical pain medicine, more research comparing pupillometric parameters with blood levels of opioid metabolites will serve to determine detection limits. Providers could use this tool to monitor treatment efficacy by using these parameters to assess steady state equilibrium and to determine dosing intervals. Furthermore, the pupillometric parameters could elucidate individuals’ metabolic capacity for different opioids in order to prescribe therapeutic levels

    LunarCube: A Deep Space 6U CubeSat with Mission Enabling Ion Propulsion Technology

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    Busek, in partnership with Morehead State University (MSU), is developing a versatile 6U CubeSat platform nicknamed “LunarCube” that can undertake missions beyond LEO. The spacecraft can host a variety of science payloads, and its mission capability is highlighted by \u3e3km/s of delta-V maneuverability with a groundbreaking ion propulsion system heretofore unavailable to CubeSats. Salient features of this propulsion system include innovative use of solid iodine propellant and a 60W class mini RF ion thruster that is capable of 1.3mN thrust and 3250sec specific impulse (Isp). The primary objective of the LunarCube program is to support a deep space CubeSat mission to the Moon from GEO or a translunar trajectory (such as the SLS/EM-1 drop-off) and carry out a lunar science campaign as a technology demonstration of the platform. A secondary objective is to showcase that much of the spacecraft’s miniaturized avionics and power system can survive the harsh radiation environment. The LunarCube concept, especially its ion propulsion element, has received significant attention from the CubeSat user community targeting near-term lunar flights. In fact, the platform has already morphed into an EM-1 CubeSat mission known as “Lunar IceCube”, selected for flight by NASA’s Next Space Technologies for Exploration Partnerships (NextSTEP) program

    NGC 5291: Implications for the Formation of Dwarf Irregular Galaxies

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    The possible formation and evolution of dwarf irregular galaxies from material derived from perturbed evolved galaxies is addressed via an HI study of a likely example, the peculiar system NGC 5291. This system, located in the western outskirts of the cluster Abell 3574, contains the lenticular galaxy NGC 5291 which is in close proximity to a disturbed companion and is flanked by an extensive complex of numerous knots extending roughly 4\u27 north and 4\u27 south of the galaxy. In an initial optical and radio study, Longmore et al. (1979, MNRAS, 188, 285) showed that these knots have the spectra of vigorous star-forming regions, and suggested that some may in fact be young dwarf irregular galaxies. High resolution 21-cm line observations taken with the VLA are presented here and reveal that the H I distribution associated with this system encompasses not only the entire N-S complex of optical knots, but also forms an incomplete ring or tail that extends approximately 3\u27 to the west. The HI associated with NGC 5291 itself shows a high velocity range; the Seashell is not detected. The formation mechanism for this unusual system is unclear and two models-a large, low-luminosity ram-swept disk, and a ram-swept interaction-are discussed. The HI in the system contains numerous concentrations, mostly along the N-S arc of the star-forming complexes, which generally coincide with one or more optical knots; the larger HI features contain several X 109 M0 of gas. Each of the knots is compared to a set of criteria designed to determine if these objects are bound against their own internal kinetic energy and are tidally stable relative to the host galaxy. An analysis of the properties of the H I concentrations surrounding the optical star-forming complexes indicates that at least the largest of these is a bound system; it also possesses a stellar component. It is suggested that this object is a genuinely young dwarf irregular galaxy that has evolved from the material associated with the system and that this entire complex contains several proto- or young dwarf irregular galaxies in various stages of development. We are therefore witnessing the early evolution of a number of genuinely young galaxies. Given the evident importance of the NGC 5291 system as a \u27\u27nursery\u27\u27 for young galaxies, careful modeling is required if we are to understand this remarkable galaxy

    Significant aspects of weaving an exhibit of woven tapis

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    Like other arts, weaving originally had great ritual and practical significance in the hieratic structure of early cultures. If we had worn only leather skins all our lives, woolen cloth would seem wonderful to us. The Athenian, clothed in his woolen chlamys, must have found the sheer silks from the island of Cos fabulous, divine. So it would seem from the frequency of the representation of the "coa vestis" in classical vase painting," and sculpture. To us fineness, or any other quality in textiles, has a purely commercial and practical connotation, but in the past, certain fabrics, certain colors, because of their exceptional qualities, were the property only of royalty, or of the religious offices, in recognition of the spiritual significance of the fine and wonderfully made

    Lunar Ice Cube: BIRCHES Payload and the Search for Volatiles with a First Generation Deep Space CubeSat

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    Lunar Ice Cube, a science requirements-driven deep space exploration 6U cubesat mission was selected for a NASA HEOMD NextSTEP slot on the EM1 launch. We are developing a compact broadband IR instrument for a high priority science application: understanding volatile origin, distribution, and ongoing processes in the inner solar system. JPL\u27s Lunar Flashlight, and Arizona State University\u27s LunaH-Map, both also EM1 lunar orbiters, will provide complimentary observations to be used in understanding volatile dynamics. The Lunar Ice Cube mission science focus, led by the JPL science PI, is on enabling broadband spectral determination of composition and distribution of volatiles in regoliths of the Moon and analogous bodies as a function of time of day, latitude, regolith age and composition and thus enabling understanding of current dynamics of volatile sources, sinks, and processes, with implications for evolutionary origin of volatiles. Lunar Ice Cube utilizes a versatile GSFC-developed payload: BIRCHES, Broadband InfraRed Compact, High-resolution Exploration Spectrometer, a miniaturized version of OVIRS on OSIRIS-REx. BIRCHES is a compact (1.5U, 2 kg, 7W including cryocooler) point spectrometer with a compact cryo-cooled HgCdTe focal plane array for broadband (1 to 4 micron) measurements, achieving sufficient SNR (\u3e400) and spectral resolution (10 nm) through the use of a Linear Variable Filter to characterize and distinguish important volatiles (water, H2S, NH3, CO2, CH4, OH, organics) and mineral bands. We are also developing compact instrument electronics which can be easily reconfigured to support the instrument in \u27imager\u27 mode, once the communication downlink band-width becomes available, and the H1RG family of focal plane arrays. Thermal design is critical for the instrument. The compact and efficient Ricor cryocooler is designed to maintain the detector temperature below 120K. In order to maintain the optical system below 220K, a special radiator is dedicated to optics alone, in addition to a smaller radiator to maintain a nominal environment for spacecraft electronics. The Lunar Ice Cube team is led by Morehead State University, who will provide build, integrate and test the spacecraft, provide missions operations and ground communication. Propulsion is provided by the Busek Iodine ion propulsion (BIT-3) engine. Attitude Control will be provided by the Blue Canyon Technology XB1, which also includes a C&DH \u27bus\u27. C&DH will also be supported, redundantly, by the Proton 200k Lite and Honeywell DM microprocessor. Onboard communication will be provided by the Xband JPL Iris Radio and dual patch antennas. Ground communication will be provided by the DSN Xband network, particularly the Morehead State University 21-meter substation. Flight Dynamics support, including trajectory design, is provided by GSFC. Use of a micropropulsion system in a low energy trajectory will allow the spacecraft to achieve the science orbit within a year. The high inclination, equatorial periapsis orbit will allow coverage of overlapping swaths, with a 10 km along-track and cross-track foot-print, once every lunar cycle at up to six different times of day (from dawn to dusk) as the mission progresses during its nominal six month science mapping period
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