10,305 research outputs found
An investigation into the archaeological application of carbon stable isotope analysis used to establish crop water availability: solutions and ways forward
Carbon stable isotope analysis of charred cereal remains
is a relatively new method employed by archaeological
scientists to investigate ancient climate and irrigation
regimes. The aim of this study was to assess the effect of
environmental variables on carbon isotope
discrimination (D) in multiple environments to develop
the technique and its archaeological application, using
crops grown at three experimental stations in Jordan.
There are two key results: (1) as expected, there was a
strong positive relationship between water availability
and D; (2) site, not water input, was the most important
factor in determining D. Future work should concentrate
on establishing ways of correcting D for the influence of
site specific environmental variables and on assessing
how well carbon isotope discrimination values are
preserved within the archaeological record
Parametric analysis of microwave and laser systems for communication and tracking. Volume 2 - System selection
System selection criteria of microwave and laser systems for communication and tracking - Vol.
Pre-apprenticeship training for young people: Estimating the marginal and average treatment effects
This paper evaluates traineeships, a voluntary programme of work placement and preparation that aims to help young unemployed people in England compete for jobs and apprenticeships. Applying the method of local instrumental variables to administrative data, we estimate the marginal treatment effects on apprenticeship take-up and employment. The heterogeneous impacts are then aggregated to form an estimate of the average impact of treatment for all participants. The results suggest that, among younger trainees, participation increases the probability of becoming an apprentice and that this holds across the distribution of unobserved heterogeneity. For older trainees, we find no significant effect on the probability of becoming an apprenticeship on average but some evidence of a negative effect among those more resistant to participating. We find no effects on employment for either age group
Dosimetry for radiobiological studies of the human hematopoietic system
A system for estimating individual bone marrow doses in therapeutic radiation exposures of leukemia patients was studied. These measurements are used to make dose response correlations and to study the effect of dose protraction on peripheral blood cell levels. Three irradiators designed to produce a uniform field of high energy gamma radiation for total body exposures of large animals and man are also used for radiobiological studies
COPTRAN - A method of optimum communication systems design
Single set of mathematical expressions describes system cost and probability of error of data transmission in terms of four basic parameters in the link equation. A Lagrange multiplier sets up equations whose solutions yield the optimum values for system design considerations and weight and cost values
User's manual for COPTRAN, a method of optimum communication system design
User manual for COPTRAN /communication system optimization program translator
Study and development of a mathematical analysis for the performance assessment of space communication system parameters
Electronic computer program user manual for optimum design of space communication syste
Access to Mobile Resources: How Does It Affect the Clerkship Experience?
Objectives: To evaluate the perceived benefits of access to library-licensed mobile clinical decision support resources in clinical medical education.
Methods: A cohort of medical students was surveyed midway through the clerkship year. Dana Medical Library offered instruction on clinical mobile resources at the beginning of the year. Students were offered a subject guide and assistance with authentication. Assessment methods included web analytics measuring the utility of the subject guide and a survey. Survey questions gathered data on access to mobile devices, relevance of instruction, use of library-licensed mobile resources, and benefits and barriers to their use in the clinical setting. Students were also asked whether access to mobile resources facilitated comparable educational experiences across clerkship sites.
Results: The survey was sent to all 111 students from the University of Vermont College of Medicine class of 2014; 31 completed the survey, with a completion rate of 28%. All respondents owned a mobile device, despite efforts to recruit both users and non-users. Nearly 75% of respondents reported using an iPhone. About 90% of respondents brought their mobile device on rotation. Generally, the wireless access at each clerkship site was rated good or excellent. Of the 60% of respondents who attended the instruction session on mobile resources, 94% found the class helpful. Half of the respondents looked at the Mobile Apps subject guide; 70% of those who did found it helpful. A significant increase in page views was reflected in subject guide usage statistics immediately following the instruction session. Approximately 25% of respondents sought out individual assistance at the library.
Conclusions: Respondents suggested improvements to library instruction such as distributing access codes during the class and demonstrating installation of an app. A large number of students did not seek additional assistance from the library, citing they did not have any questions. While that may be because they found the subject guide and/or class sufficiently helpful, a significant number of respondents indicated they were unaware of the subject guide. This suggests a need for further promotion and marketing efforts. Researchers were surprised that nonlibrary licensed apps (ePocrates or Medscape) were valued over resources such as DynaMed, and that the most common barrier cited was not having access to appropriate apps. Finally, almost all of the participants who reported taking a mobile device on a rotation agreed it facilitated access to clinical information and improved the clerkship experience
The Ruling On A Motion In Limine: Preserving The Issue For Appeal
Although the distinction between motions in limine based in fact and those rooted in law is widely recognized in Ohio, courts generally use a “one size fits all” approach when it comes to preserving the issues for appeal. Under that approach, an attorney must challenge the pretrial ruling at trial to ensure that the issue will be preserved for appeal. This Article argues that Ohio should modify its practices to conform to the federal method and follow in the footsteps of its neighbors by specifying that a definitive pretrial ruling on a motion in limine will preserve the issue for appeal. In coming to this conclusion, the Article discusses a current trend in Ohio and its parallels with earlier federal cases, which culminated in a 2000 amendment to Rule 103 of the Federal Rules of Evidence that preserves definitive pretrial rulings for appeal. It then examines the pros and cons of the federal policy and the ways to determine whether the ruling on the motion was definitive or precautionary. Finally, the Article considers how a ruling on a motion in limine might effectively be appealed in cases that do not go to trial
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