8,154 research outputs found
Ground-water resources of the Oakland Park area of eastern Broward County, Florida
The Oakland Park area obtains its water from the Biscayne aquifer,
S composed of very permeable and porous, sandy limestones. The per-
3 meability of the aquifer increases with depth, and wells in the area
<\ generally obtain water at depths ranging from 60 to 80 feet, or between
S 100 and 200 feet, depending on the quantity of water desired. The
data presented in this paper can be used for further development of
water and wise management of resources in the area. Large quantities
S of ground water are still available at Oakland Park, if salt-water encroachment
can be controlled. The data in this study provide the necessary
information to begin an effective water management program.
(PDF has 49 pages
Studies of nucleotide sequences in TMV-RNA. II - The action of spleen diesterase
Spleen diesterase action on polynucleotide and ribonucleic acid infectivit
Three applications for mobile epidemic algorithms
This paper presents a framework for the pervasive sharing of data using wireless networks. 'FarCry' uses the mobility of users to carry files between separated networks. Through a mix of ad-hoc and infrastructure-based wireless networking, files are transferred between users without their direct involvement. As users move to different locations, files are then transmitted on to other users, spreading and sharing information. We examine three applications of this framework. Each of these exploits the physically proximate nature of social gatherings. As people group together in, for example, business meetings and cafés, this can be taken as an indication of similar interests, e.g. in the same presentation or in a type of music. MediaNet affords sharing of media files between strangers or friends, MeetingNet shares business documents in meetings, and NewsNet shares RSS feeds between mobile users. NewsNet also develops the use of pre-emptive caching: collecting information from others not for oneself, but for the predicted later sharing with others. We offer observations on developing this system for a mobile, multi-user, multi-device environment
Effectiveness of Financial Incentives in Improving Breast Cancer Screening Among Medicaid Recipients
Breast cancer remains one of the leading causes of death among women. Roughly 2.4 million women are diagnosed annually with breast cancer throughout the world. Although breast cancer survival rates are favorable for the United States compared to other nations (90% 5-year survival for non-metastatic disease), it comes at a high cost. The United States spends an estimated 75, 150. Covariates such as age (years), race, geographic sub-region of Baltimore, Maryland for the primary residence, and the number of people reported as living with the Medicaid recipient (household count) were considered when assessing the role of population characteristics and breast cancer screening utilization when a financial incentive was provided.
The primary question considered by the study was asking if financial incentives provided to Medicaid recipients increased the utilization of breast cancer screening. The study findings were inconclusive. A secondary question considered if larger-sized financial incentives increased the likelihood of breast cancer screening compared to when a smaller incentive was provided. It was identified that the smaller financial incentive (100 or $150) were not found to be statistically significant. The covariates of the Baltimore sub-region and the household count were identified to be not statistically significant in either the financial incentive or no financial incentive cohorts. Alternatively, the age (OR=1.07, 95% CI 1.04, 1.11, p-value \u3c0.05) and race covariates were identified as being statistically significant (p-value \u3c0.05) when a financial incentive was provided to increase breast cancer screening among Medicaid recipients. It was noted that American Indian/Alaskan Native and Black participants who received a financial incentive had a statistically significant (p-value \u3c0.05) increase in their likelihood of utilizing breast cancer screening
Alien Registration- Sherwood, Wilmot B. (Wade, Aroostook County)
https://digitalmaine.com/alien_docs/32635/thumbnail.jp
Measurement of outflow facility using iPerfusion
Elevated intraocular pressure (IOP) is the predominant risk factor for glaucoma, and reducing IOP is the only successful strategy to prevent further glaucomatous vision loss. IOP is determined by the balance between the rates of aqueous humour secretion and outflow, and a pathological reduction in the hydraulic conductance of outflow, known as outflow facility, is responsible for IOP elevation in glaucoma. Mouse models are often used to investigate the mechanisms controlling outflow facility, but the diminutive size of the mouse eye makes measurement of outflow technically challenging. In this study, we present a new approach to measure and analyse outflow facility using iPerfusion™, which incorporates an actuated pressure reservoir, thermal flow sensor, differential pressure measurement and an automated computerised interface. In enucleated eyes from C57BL/6J mice, the flow-pressure relationship is highly non-linear and is well represented by an empirical power law model that describes the pressure dependence of outflow facility. At zero pressure, the measured flow is indistinguishable from zero, confirming the absence of any significant pressure independent flow in enucleated eyes. Comparison with the commonly used 2-parameter linear outflow model reveals that inappropriate application of a linear fit to a non-linear flow-pressure relationship introduces considerable errors in the estimation of outflow facility and leads to the false impression of pressure-independent outflow. Data from a population of enucleated eyes from C57BL/6J mice show that outflow facility is best described by a lognormal distribution, with 6-fold variability between individuals, but with relatively tight correlation of facility between fellow eyes. iPerfusion represents a platform technology to accurately and robustly characterise the flow-pressure relationship in enucleated mouse eyes for the purpose of glaucoma research and with minor modifications, may be applied in vivo to mice, as well as to eyes from other species or different biofluidic systems
VPython: 3D programming for ordinary mortals
VPython is a programming environment that enables even novices to write programs that produce navigable real-time 3D animations. One to two hours of carefully crafted instruction is sufficient to bring novice students to the point of being able to do serious computer modeling (http://www.matterandinteractions.org). VPython is based on the Python programming language (http://python.org) which has a large user community. Like Python, VPython is open source freeware available for Windows, Linux, and Macintosh (http://vpython.org). Workshop participants will learn to write 3D programs
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Influence of the public transportation system on the air quality of a major urban center. A case study: Milan, Italy
A sampling campaign was conducted in the city of Milan, Italy before and during a transportation strike in January 2004. This strike provided a unique opportunity to investigate the influence of public transportation on the air quality in a major metropolitan area. Twenty-four air samples were collected each day around the city on January 2nd, 7th and 9th. The samples were analyzed for methane, carbon monoxide, non-methane hydrocarbons (NMHCs), halocarbons and alkyl nitrates. Significant differences in the mixing ratios were observed among the three days of sampling, with January 2nd showing the lowest concentrations as a result of decreased activity in the city during the holiday season. January 9th showed the highest NMHC concentrations because of increased vehicular activity in the city due to a public transportation strike. This paper investigates the correlation between the increased number of vehicles and decreased air quality because of a reduction in public transportation. Computer simulations were able to reproduce measurements of ozone production during the January 2004 strike and a July 2005 strike. The measurements and simulations suggest that reduced VOC emissions due to the existence of public transportation lowers peak ozone by 11-33% during the summer months. © 2008 Elsevier Ltd. All rights reserved
Ames research center publications, 1975
This bibliography cites 851 documents by Ames Research Center personnel and contractors which appeared in formal NASA publications, journals, books, patents, and contractor reports in 1975, or not included in previous annual bibliographies. An author index is provided
Picking pockets on the lawn: the development of tactics and strategies in a mobile game
This paper presents Treasure, an outdoor mobile multiplayer game inspired by Weiser’s notion of seams, gaps and breaks in different media. Playing Treasure involves movement in and out of a wi-fi network, using PDAs to pick up virtual ’coins’ that may be scattered outside network coverage. Coins have to be uploaded to a server to gain game points, and players can collaborate with teammates to double the points given for an upload. Players can also steal coins from opponents. As they move around, players’ PDAs sample network signal strength and update coverage maps. Reporting on a study of players taking part in multiple games, we discuss how their tactics and strategies developed as their experience grew with successive games. We suggest that meaningful play arises in just this way, and that repeated play is vital when evaluating such games
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