319 research outputs found
COMPUTER APPLICATIONS: OFF-LINE ORDER ENTRY
The author presents his company's experience with off line order entry equipment.Agribusiness,
The variance-covariance method: Microdosimetry in time-varying low dose-rate radiation fields
The variance-covariance method is employed at low doses and in radiation fields of low dose rates from an241Am (4 nGy/s) and a90Sr (300 nGy/s) source. The preliminary applications and results illustrate some of the potential of the method, and show that the dose average of lineal energy or energy imparted can be determined over a wide range of doses and dose rates. The dose averages obtained with the variance-covariance method in time-varying fields, for which the conventional variance method is not suitable, agree well with results obtained under the condition of constant dose rate. The results are compared to data obtained in terms of the conventional single-event measurements. The method has evident advantages, such as facility and speed of measurement
Recommended from our members
Pioneer vegetation on glacier forelands in southern Norway: emerging communities?
On Classical PCF, Linear Logic and the MIX Rule
We study a classical version of PCF from a semantical point of view. We define a general notion of model based on categorical models of Linear Logic, in the spirit of earlier work by Girard, Regnier and Laurent. We give a concrete example based on the relational model of Linear Logic, that we present as a non-idempotents intersection type system, and we prove an Adequacy Theorem using ideas introduced by Krivine. Following Danos and Krivine, we also consider an extension of this language with a MIX construction introducing a form of must non-determinism; in this language, a program of type integer can have more than one value (or no value at all, raising an error). We propose a refinement of the relational model of classical PCF in which programs of type integer are single valued; this model rejects the MIX syntactical constructs (and the MIX rule of Linear Logic)
Prodigy: an Innovative Approach for Character Development
The formation and development of healthy and effective characters among the students are closely related to the role played by a counselor at school. However, in the era of globalization, the role of counselor in the development of good character in students is more difficult and complicated. Thus, apart from the knowledge and skills, counselor should have an effective strategy in encouraging the development of good character in young children. The purpose of this paper is to introduce a ‘Prodigy\u27 as an approach to assist the guidance and counseling teachers as well as other individuals who play vital roles in the development and improvement of students\u27 behavior. Prodigy is unique and innovative because it helps counselors to understand the essential elements for the improvement and enhancement of human development in schools; and comprehensive as they integrate the affective, cognitive and behavioral components of character development. This paper discusses relevant course modules for character development and touches the benefits of using Prodigy in fostering character development
The Influence of Polyploidy and Genome Composition on Genomic Imprinting in Mice
Genomic imprinting is an epigenetic mechanism that switches the expression of imprinted genes involved in normal embryonic growth and development in a parent-of-origin-specific manner. Changes inDNAmethylation statuses from polyploidization are a well characterized epigenetic modification in plants. However, how changes in ploidy affect both imprinted gene expression and methylation status in mammals remains unclear. To address this, we used quantitative real time PCR to analyze expression levels of imprinted genes in mouse tetraploid fetuses. We used bisulfite sequencing to assess the methylation statuses of differentially methylated regions (DMRs) that regulate imprinted gene expression in triploid and tetraploid fetuses. The nine imprinted genes H19, Gtl2, Dlk1, Igf2r, Grb10, Zim1, Peg3, Ndn, and Ipw were all unregulated; in particular, the expression of Zim1 was more than 10-fold higher, and the expression of Ipw was repressed in tetraploid fetuses. The methylation statuses of four DMRs H19, intergenic (IG), Igf2r, and Snrpn in tetraploid and triploid fetuses were similar to those in diploid fetuses. We also performed allele-specific RT-PCR sequencing to determine the alleles expressing the three imprinted genes Igf2, Gtl2, and Dlk1 in tetraploid fetuses. These three imprinted genes showed monoallelic expression in a parent-of-origin-specific manner. Expression of non-imprinted genes regulating neural cell development significantly decreased in tetraploid fetuses, which might have been associated with unregulated imprinted gene expression. This study provides the first detailed analysis of genomic imprinting in tetraploid fetuses, suggesting that imprinted gene expression is disrupted, but DNA methylation statuses of DMRs are stable following changes in ploidy in mammals
An examination of the geologic features of Rock and Pipestone counties, Southwestern Minnesota, and their economic and environmental implications
The rock outcrops and glacial features exposed in Rock and Pipestone counties in southwestern Minnesota display unusual combinations of sedimentary features and occupy a strategic position for interpreting regional stratigraphic and tectonic events. Geologists have only recently begun to systematically study the area's features, and much of the past research has overlooked stratigraphic relationships and sedimentary structures, and instead emphasized the historic and economic aspects of the two counties' geologic deposits. Indeed the historic and economic aspects of the area's geologic features are extremely important, and to fully study the area and its geologic resources it is necessary to investigate the historic, economic, and environmental impact that the area's residents have had. This paper examines the stratigraphy and probable origins of the area's geologic deposits, and evaluates the area's resources with respect to their historic, economic, and environmental implications.No embarg
- …
