Note: This page contains sample records for the topic identify common retention from Science.gov.
While these samples are representative of the content of Science.gov,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of Science.gov
to obtain the most current and comprehensive results.
Last update: November 12, 2013.
1

5 CFR 595.104 - What criteria are used to identify a recruitment and retention problem?  

Code of Federal Regulations, 2013 CFR

...What criteria are used to identify a recruitment and retention problem? 595.104...What criteria are used to identify a recruitment and retention problem? The head...agency may determine that a significant recruitment and retention problem exists for...

2013-01-01

2

Key to Identifying Common Household Ants  

NSDL National Science Digital Library

A short lucid key to 8 common household ant species with control strategies. The information presented is accurate and the key easy to use; ancillary pages are also useful. The key may present difficulties if other ant species are encountered or in other parts of the U.S.

0002-11-30

3

Partners in Research Identifying Common Interests.  

National Technical Information Service (NTIS)

The Agency for Health Care Policy and Research (AHCPR) undertook this project to develop a methodology for systematically matching research interests of private sector organizations with its own in order to identify potential research partners. The method...

1997-01-01

4

Focus on retention: Identifying barriers to nurse faculty satisfaction.  

PubMed

There has been a great deal of attention focused upon the professional and faculty nursing shortage. Retirement rates of seasoned nurse faculty, fewer nurses pursuing academic roles as nursing faculty, and insufficient numbers of nurses in doctoral programs hinder the ability to educate willing students to become professional nurses. The aim of this descriptive, quantitative study in the New England region was to determine barriers to job satisfaction as reported by nurse faculty. A 32-item survey was used with questions about workload, satisfaction, and identified barriers to satisfaction. Responses from 226 nurse faculty support findings regarding factors essential to job satisfaction, including work environment and workload. Implications for the study findings include the need for attention to the complexity of the academic work environment, specifically in nursing education. PMID:22916629

Bittner, Nancy Phoenix; O'Connor, Margaret

5

Identifying a parameterisation of the soil water retention curve from on-ground GPR measurements  

NASA Astrophysics Data System (ADS)

We show the potential of on-ground Ground-Penetrating Radar (GPR) to identify the parameterisation of the soil water retention curve, i.e. its functional form, with a semi-quantitative analysis based on numerical simulations of the radar signal. An imbibition and drainage experiment has been conducted at the ASSESS-GPR site to establish a fluctuating water table, while an on-ground GPR antenna recorded traces over time at a fixed location. These measurements allow to identify and track the capillary fringe in the soil. The typical dynamics of soil water content with a transient water table can be deduced from the recorded radargrams. The characteristic reflections from the capillary fringes in model soils that are described by commonly used hydraulic parameterisations are investigated by numerical simulations. The parameterisations used are (i) full van Genuchten, (ii) simplified van Genuchten with m = 1 - 1/n and (iii) Brooks-Corey. All three yield characteristically different reflections, which allows the identification of an appropriate parameterisation by comparing to the measured signals. We show that for the sand used here, these signals are not consistent with the commonly used simplified van Genuchten parameterisation with m = 1 - 1/n.

Dagenbach, A.; Buchner, J. S.; Klenk, P.; Roth, K.

2013-02-01

6

Iron and zinc retention in common beans (Phaseolus vulgaris L.) after home cooking  

PubMed Central

Background According to the World Health Organization (WHO), iron, iodine, and Vitamin A deficiencies are the most common forms of malnutrition, leading to severe public health consequences. The importance of iron and zinc in human nutrition and the number of children found to be deficient in these nutrients make further studies on retention in cooked grains and cooked bean broth important. Objectives This work aimed to evaluate iron and zinc retention in six common bean (Phaseolus vulgaris L.) cultivars under the following conditions: raw beans, regular pot cooking, pressure cooking, with and without previous water soaking, and broth. Design Determination of iron and zinc content in the raw, cooked bean grains and broth samples was carried out by Inductively Coupled Plasma (ICP) Optical Emission Spectrometry (Spectro Analytical Instrument – Spectroflame P). All experiments and analyses were carried out in triplicate. Results Overall, regardless of the cooking method, with or without previous water soaking, the highest zinc concentration was found in the cooked bean grains. However, pressure cooking and previous water soaking diminished iron retention in the cooked grains, while increasing it in the bean broth. Conclusion The common bean was confirmed to be an excellent source of iron and zinc for human consumption, and it was suggested that beans should be consumed in a combined form, i.e. grain with bean broth.

Carvalho, Lucia M. J.; Correa, Mariana M.; Pereira, Elenilda J.; Nutti, Marilia R.; Carvalho, Jose L. V.; Ribeiro, Ediane M. G.; Freitas, Sidinea C.

2012-01-01

7

Retention interval and eyewitness memory for events and personal identifying attributes.  

PubMed

The effect of varying the retention interval after an interaction with a stranger on the accuracy of memory for events and for personal identifying characteristics at 2 recall attempts was investigated. Although the number of correct event facts that were recalled decayed as expected, the percentage of recalled facts that were in error remained constant over time. In addition, a single recall attempt prevented further decay in the total amount correctly recalled. In contrast, although the perception of and memory for identifying characteristics varied with the attribute, retention interval had no effect on the accuracy of memory for the person, either at 1st recall or after a 2nd recall at 4 weeks. Confidence was highly predictive of the accuracy of personal descriptions. The relationship between the accuracy of witness descriptions and the probability of arresting an innocent suspect is discussed. PMID:9806014

Ebbesen, E B; Rienick, C B

1998-10-01

8

Identifying the predictors of acute urinary retention following magnetic-resonance-guided prostate brachytherapy  

Microsoft Academic Search

Purpose: Larger prostate gland volumes have been associated with long-term urinary morbidity in prostate interstitial radiation therapy utilizing ultrasound image guidance technique. This study was performed to identify the clinical and technical predictors of acute urinary retention following magnetic-resonance (MR)-guided prostate interstitial brachytherapy.Methods and Materials: Fifty patients underwent MR-guided prostate brachytherapy between December 1997 and March 1999. Patient selection was

Michael D Thomas; Robert Cormack; Clare M Tempany; Sanjaya Kumar; Judi Manola; L Schneider; Mark. D Hurwitz; Anthony V D’Amico

2000-01-01

9

The newly identified yeast GRD genes are required for retention of late-Golgi membrane proteins.  

PubMed Central

Processing of A-ALP, a late-Golgi membrane protein constructed by fusing the cytosolic domain of dipeptidyl aminopeptidase A to the transmembrane and lumenal domains of alkaline phosphatase (ALP), serves as a convenient assay for loss of retention of late-Golgi membrane proteins in Saccharomyces cerevisiae. In this study, a large group of novel grd (for Golgi retention defective) yeast mutants, representing 18 complementation groups, were identified on the basis of their mislocalization of A-ALP to the vacuole, where it was proteolytically processed and thus became enzymatically activated. All of the grd mutants exhibited significant mislocalization of A-ALP, as measured by determining the kinetics of A-ALP processing and by analyzing its

Nothwehr, S F; Bryant, N J; Stevens, T H

1996-01-01

10

Iodine content in bread, milk and the retention of inherent iodine in commonly used Indian recipes.  

PubMed

Iodine deficiency disorders (IDD) is still a major public health problem and iodized salt remains the most effective means to control IDD in India. Few reports indicate that vegans have inadequate iodine intake while at the same time concerns are being raised on the implementation of universal salt iodization in the country. Therefore, we investigated the iodine content in bread, milk and commonly used Indian recipes prepared without iodized salt and the retention of inherent iodine therein. Results showed considerable iodine content in bread (25 ?g/100g) and milk (303 ?g/L) as a positive fallout of universal salt iodization. Iodine content in 38 vegetarian recipes prepared without iodized salt was very low (2.9 ± 2.4 ?g/100g). Retention of inherent iodine (65.6 ± 15.4%) and iodine from iodized salt (76.7 ± 10.3%) in the same recipes was comparable. Thus, universal salt iodization programme remains the single most important source of dietary iodine for the Indian population. PMID:23122074

Longvah, T; Toteja, G S; Upadhyay, A

2012-09-16

11

The Tragedy of the Commons revisited Identifying behavioral principles  

Microsoft Academic Search

The theme of Hardin's renowned ‘The Tragedy of the Commons’ is that the common-pool resource is dissipated to the level where the average value of extraction equals the wage rate in the long run when the number of appropriators is unlimited. Yet experimental results and rapid deforestation in tropical countries follow a contrasting pattern: even though the number of appropriators

Masaru Ito; Tatsuyoshi Saijo; Masashi Une

1995-01-01

12

HOX expression patterns identify a common signature for favorable AML  

PubMed Central

Deregulated HOX expression, by chromosomal translocations and myeloid-lymphoid leukemia (MLL) rearrangements, is causal in some types of leukemia. Using real-time reverse transcription-PCR, we examined the expression of 43 clustered HOX, polycomb, MLL and FLT3 genes in 119 newly diagnosed adult acute myeloid leukemias (AMLs) selected from all major cytogenetic groups. Downregulated HOX expression was a consistent feature of favorable AMLs and, among these cases, inv(16) cases had a distinct expression profile. Using a 17-gene predictor in 44 additional samples, we observed a 94.7% specificity for classifying favorable vs intermediate/unfavorable cytogenetic groups. Among other AMLs, HOX overexpression was associated with nucleophosmin (NPM) mutations and we also identified a phenotypically similar subset with wt-NPM. In many unfavorable and other intermediate cytogenetic AMLs, HOX levels resembled those in normal CD34+ cells, except that the homogeneity characteristic of normal samples was not present. We also observed that HOXA9 levels were significantly inversely correlated with survival and that BMI-1 was over-expressed in cases with 11q23 rearrangements, suggesting that p19ARF suppression may be involved in MLL-associated leukemia. These results underscore the close relationship between HOX expression patterns and certain forms of AML and emphasize the need to determine whether these differences play a role in the disease process.

Andreeff, M; Ruvolo, V; Gadgil, S; Zeng, C; Coombes, K; Chen, W; Kornblau, S; Baron, AE; Drabkin, HA

2009-01-01

13

HOX expression patterns identify a common signature for favorable AML.  

PubMed

Deregulated HOX expression, by chromosomal translocations and myeloid-lymphoid leukemia (MLL) rearrangements, is causal in some types of leukemia. Using real-time reverse transcription-PCR, we examined the expression of 43 clustered HOX, polycomb, MLL and FLT3 genes in 119 newly diagnosed adult acute myeloid leukemias (AMLs) selected from all major cytogenetic groups. Downregulated HOX expression was a consistent feature of favorable AMLs and, among these cases, inv(16) cases had a distinct expression profile. Using a 17-gene predictor in 44 additional samples, we observed a 94.7% specificity for classifying favorable vs intermediate/unfavorable cytogenetic groups. Among other AMLs, HOX overexpression was associated with nucleophosmin (NPM) mutations and we also identified a phenotypically similar subset with wt-NPM. In many unfavorable and other intermediate cytogenetic AMLs, HOX levels resembled those in normal CD34+ cells, except that the homogeneity characteristic of normal samples was not present. We also observed that HOXA9 levels were significantly inversely correlated with survival and that BMI-1 was overexpressed in cases with 11q23 rearrangements, suggesting that p19(ARF) suppression may be involved in MLL-associated leukemia. These results underscore the close relationship between HOX expression patterns and certain forms of AML and emphasize the need to determine whether these differences play a role in the disease process. PMID:18668134

Andreeff, M; Ruvolo, V; Gadgil, S; Zeng, C; Coombes, K; Chen, W; Kornblau, S; Barón, A E; Drabkin, H A

2008-07-31

14

A new type of intracellular retention signal identified in a pestivirus structural glycoprotein.  

PubMed

Sorting of membrane proteins into intracellular organelles is crucial for cell function. Viruses exploit intracellular transport and retention systems to concentrate envelope proteins at the site of virus budding. In pestiviruses, a group of important pathogens of pigs and ruminants closely related to human hepatitis C virus, the E(rns) protein translated from the viral RNA is secreted from the infected cells and found in the serum of infected animals. Secretion of the protein is regarded as crucial for its function as a viral virulence factor associated with its RNase activity. However, ?95% of the E(rns) molecules are retained within the infected cell. Fusion of different E(rns) fragments to the C terminus of CD72 allowed identification of a retention signal within the C-terminal 65 aa of the viral protein. This C-terminal sequence represents its membrane anchor and folds into an amphipathic helix binding in-plane to the membrane surface. Residues L183, I190, and L208 are important for intracellular location of E(rns). Presentation of the retention signal on the cytoplasmic instead of the luminal face of the ER membrane in CD8? fusion proteins still led to retention. Thus, E(rns) contains in its C-terminal amphipathic helix an intracellular retention signal that is active on both faces of the membrane. PMID:22549508

Burrack, Sandra; Aberle, Daniel; Bürck, Jochen; Ulrich, Anne S; Meyers, Gregor

2012-05-01

15

Analysis of the parameter identifiability of the in situ diffusion and retention (DR) experiments  

Microsoft Academic Search

In situ diffusion experiments are performed at underground research laboratories to overcome the limitations of laboratory diffusion experiments. The diffusion and retention (DR) experiments are long-term, natural-scale, in situ experiments performed in the anisotropic Opalinus Clay Formation at Mont Terri, Switzerland. Dilution data are monitored at the injection interval and overcoring data will be measured at samples around the injection

Javier Samper; Shuping Yi; Acacia Naves

2010-01-01

16

A Brief Survey to Identify Priorities for Improving Clinician Recruitment and Retention: Results from Hawai'i Island Physicians  

PubMed Central

Background In light of the documented physician shortage on Hawai‘i Island, the Hawai‘i Clinician Recruitment and Retention survey was designed and implemented to assess perceptions of quality of life and the work environment among clinicians on Hawai‘i Island and to identify aspects of the environment on Hawai‘i Island that predict responses to questions regarding recruitment and retention. Methods The respondents were 127 Hawai‘i Island clinicians, specifically 96 physicians, 15 nurses, five pharmacists, four physician assistants, two social workers, and five “other” healthcare workers. The internal reliability of the survey was high (alpha=.91) and its convergent validity was supported by the significant correlation of item total scores with anchor items that measured overall ratings of the environment and likelihood of recruitment and retention. Given the small number of non-physician clinicians responding, descriptive analyses included only physicians. Physicians who indicated they plan to retire within 5 years were excluded from the correlation analyses to focus on patterns within the target group for retention. Results Overall, results indicate that, while the majority of physicians who relocated to Hawai‘i Island did so primarily for the quality of life, the best predictors of retention are financial sustainability, professional opportunities, community support, and access to good K-12 schools. Survey results also indicate that Hawai‘i Island will lose 32% of its current physicians within the next five years due to retirement or other causes. Discussion These findings indicate that increased urgency to find solutions is warranted.

2012-01-01

17

Keeping Our Students: Identifying Factors that Influence Student Withdrawal and Strategies to Enhance the Experience and Retention of First-Year Students  

ERIC Educational Resources Information Center

This article derives from local research at two UK universities as part of their institutional strategies to address retention and progression and enhance their students' experiences of higher education. In both Middlesex University and the University of Salford, research has been undertaken to identify factors which influence the retention and…

Parmar, Deeba; Trotter, Eileen

2004-01-01

18

Identifying vulnerable websites by analysis of common strings in phishing URLs  

Microsoft Academic Search

It has been shown that most phishing sites are created by means of a vulnerable Web server being re-purposed by a phisher to host a counterfeit Website without the knowledge of the server's owner. In this paper, we examine common vulnerabilities which allow these phishing sites to be created and suggest a method for identifying common attack methods, as well

Brad Wardman; Gaurang Shukla; Gary Warner

2009-01-01

19

Newly Identified Genetic Variations in Common Escherichia coli MG1655 Stock Cultures  

PubMed Central

We have recently identified seven mutations in commonly used stocks of the sequenced Escherichia coli strain MG1655 which do not appear in the reference sequence. The mutations are likely to cause loss of function of the glpR and crl genes, which may have serious implications for physiological experiments using the affected strains.

Freddolino, Peter L.; Amini, Sasan

2012-01-01

20

Analyses of medical data models - identifying common concepts and items in a repository of medical forms.  

PubMed

One year ago the portal of Medical Data Models (http://medical-data-models.org) was presented as a resource for the scientific community. As of November 2012 there are approximately 3,300 forms with 102,000 items available in the CDISC ODM format. First descriptive analyses regarding form metadata demonstrate the capability of such a repository to identify commonly used medical concepts. Most common items are administrative attributes which indicates that more clinical information are needed to increase the secondary use of data documented within these forms. PMID:23920826

Breil, Bernhard; Dugas, Martin

2013-01-01

21

Can Source Code Auditing Software Identify Common Vulnerabilities and Be Used to Evaluate Software Security?  

Microsoft Academic Search

Software vulnerabilities are a growing problem (c.f. MITRE's CVE, http:\\/\\/eve.mitre.org). Moreover, many of the mistakes leading to vulnerabilities are repeated often. Source code auditing tools could be a great help in identifying common mistakes, or in evaluating the security of software. We investigated the effectiveness of the auditing tools we could access, using the following criteria: number of false positives,

Jon Heffley; Pascal Meunier

2004-01-01

22

Common Fusion Transcripts Identified in Colorectal Cancer Cell Lines by High-Throughput RNA Sequencing12  

PubMed Central

Colorectal cancer (CRC) is the third most common cancer disease in the Western world, and about 40% of the patients die from this disease. The cancer cells are commonly genetically unstable, but only a few low-frequency recurrent fusion genes have so far been reported for this disease. In this study, we present a thorough search for novel fusion transcripts in CRC using high-throughput RNA sequencing. From altogether 220 million paired-end sequence reads from seven CRC cell lines, we identified 3391 candidate fused transcripts. By stringent requirements, we nominated 11 candidate fusion transcripts for further experimental validation, of which 10 were positive by reverse transcription-polymerase chain reaction and Sanger sequencing. Six were intrachromosomal fusion transcripts, and interestingly, three of these, AKAP13-PDE8A, COMMD10-AP3S1, and CTB-35F21.1-PSD2, were present in, respectively, 18, 18, and 20 of 21 analyzed cell lines and in, respectively, 18, 61, and 48 (17%-58%) of 106 primary cancer tissues. These three fusion transcripts were also detected in 2 to 4 of 14 normal colonic mucosa samples (14%–28%). Whole-genome sequencing identified a specific genomic breakpoint in COMMD10-AP3S1 and further indicates that both the COMMD10-AP3S1 and AKAP13-PDE8A fusion transcripts are due to genomic duplications in specific cell lines. In conclusion, we have identified AKAP13-PDE8A, COMMD10-AP3S1, and CTB-35F21.1-PSD2 as novel intrachromosomal fusion transcripts and the most highly recurring chimeric transcripts described for CRC to date. The functional and clinical relevance of these chimeric RNA molecules remains to be elucidated.

Nome, Torfinn; Thomassen, Gard OS; Bruun, Jarle; Ahlquist, Terje; Bakken, Anne C; Hoff, Andreas M; Rognum, Torleiv; Nesbakken, Arild; Lorenz, Susanne; Sun, Jinchang; Barros-Silva, Joao Diogo; Lind, Guro E; Myklebost, Ola; Teixeira, Manuel R; Meza-Zepeda, Leonardo A; Lothe, Ragnhild A; Skotheim, Rolf I

2013-01-01

23

Post-operative urinary retention.  

PubMed

Urinary retention is a common complication of surgery and anaesthesia. The risk of post-operative urinary retention is increased following certain surgical procedures and anaesthetic modalities, and with patients' advancing age. Patients at increased risk of post-operative urinary retention should be identified before surgery or the condition should be identified and treated in a timely manner following surgery. If conservative measures do not help the patient to pass urine, the bladder will need to be drained using either an intermittent catheter or an indwelling urethral catheter, which can result in catheter-associated urinary tract infections. This article provides an overview of normal bladder function, risk factors for developing post-operative urinary retention, and treatment options. Guidance drawn from the literature aims to assist nurses in identifying at-risk patients and inform patient care. PMID:24093416

Steggall, Martin; Treacy, Colm; Jones, Mark

2013-10-01

24

Effect of Population Density upon Life Expectancy and Wing Retention in the Common House Fly, Musca domestica L  

Microsoft Academic Search

In adult caged house flies, maintained on a complete diet of powdered whole milk, cane sugar and water, the median longevity, maximal longevity, and percentage that exhibit complete wing retention at death are increased as the number of individuals per cage is correspondingly decreased from 240 to 10 flies per cage. These effects are more marked for the shorter-lived males

Morris Rockstein; Jeffrey A. Chesky; Marc H. Levy; Lawrence Yore

1981-01-01

25

Sparse multitask regression for identifying common mechanism of response to therapeutic targets  

PubMed Central

Motivation: Molecular association of phenotypic responses is an important step in hypothesis generation and for initiating design of new experiments. Current practices for associating gene expression data with multidimensional phenotypic data are typically (i) performed one-to-one, i.e. each gene is examined independently with a phenotypic index and (ii) tested with one stress condition at a time, i.e. different perturbations are analyzed separately. As a result, the complex coordination among the genes responsible for a phenotypic profile is potentially lost. More importantly, univariate analysis can potentially hide new insights into common mechanism of response. Results: In this article, we propose a sparse, multitask regression model together with co-clustering analysis to explore the intrinsic grouping in associating the gene expression with phenotypic signatures. The global structure of association is captured by learning an intrinsic template that is shared among experimental conditions, with local perturbations introduced to integrate effects of therapeutic agents. We demonstrate the performance of our approach on both synthetic and experimental data. Synthetic data reveal that the multi-task regression has a superior reduction in the regression error when compared with traditional L1-and L2-regularized regression. On the other hand, experiments with cell cycle inhibitors over a panel of 14 breast cancer cell lines demonstrate the relevance of the computed molecular predictors with the cell cycle machinery, as well as the identification of hidden variables that are not captured by the baseline regression analysis. Accordingly, the system has identified CLCA2 as a hidden transcript and as a common mechanism of response for two therapeutic agents of CI-1040 and Iressa, which are currently in clinical use. Contact: b_parvin@lbl.gov

Zhang, Kai; Gray, Joe W.; Parvin, Bahram

2010-01-01

26

Analysis of common genetic variants identifies RELN as a risk gene for schizophrenia in Chinese population.  

PubMed

Abstract Objectives. Several lines of evidence have shown that both RELN mRNA and protein are possibly down-regulated in the brain of schizophrenia patients. Recent association studies in European populations suggested RELN as a risk gene for schizophrenia. In this study, we test if RELN contributes to the risk of schizophrenia in Chinese population. Methods. We conducted case-control association analysis of 19 representative single nucleotide polymorphisms (SNPs) spanning the entire region of RELN in two independent Han Chinese samples from southwestern China (the Kunming sample and the Yuxi sample). Results. We identified six SNPs significantly associated with schizophrenia in the Kunming sample and four of them remained significant in the combined samples (the P values range from 0.006 to 4.0 × 10(-5)). Haplotype analysis also suggested significant associations for the haplotypes incorporating the six significant SNPs (global P < 1.0 × 10(-5)). Additionally, we also observed several other haplotypes (defined by a different set of SNPs) significantly associated with schizophrenia in the Kunming sample. However, the reported association of rs7341475 in Ashkenazi Jews was not significant in Han Chinese. Conclusions: Our findings demonstrate that RELN is a susceptibility gene for schizophrenia in Chinese population, and it is likely a common risk gene for schizophrenia in major populations worldwide. PMID:21745129

Li, Ming; Luo, Xiong-Jian; Xiao, Xiao; Shi, Lei; Liu, Xing-Yan; Yin, Li-De; Ma, Xiao-Yuan; Yang, Shun-Ying; Pu, Xing-Fu; Yu, Jin; Diao, Hong-Bo; Shi, Hong; Su, Bing

2011-07-11

27

Genome-wide association study identifies common variants associated with circulating vitamin E levels.  

PubMed

In genome-wide association studies (GWAS) of common genetic variants associated with circulating alpha- and gamma-tocopherol concentrations in two adult cohorts comprising 5006 men of European descent, we observed three loci associated with alpha-tocopherol levels, two novel single-nucleotide polymorphisms (SNPs), rs2108622 on 19pter-p13.11 (P= 1.7 × 10(-8)) and rs11057830 on 12q24.31 (P= 2.0 × 10(-8)) and confirmed a previously reported locus marked by rs964184 on 11q23.3 (P= 2.7 × 10(-10)). The three SNPs have been reported to be associated with lipid metabolism and/or regulation. We replicated these findings in a combined meta-analysis with two independent samples, P= 7.8 × 10(-12) (rs964184 on 11q23.3 near BUD13, ZNF259 and APOA1/C3/A4/A5), P= 1.4 × 10(-10) (rs2108622 on 19pter-p13.11 near CYP4F2) and P= 8.2 × 10(-9) (rs11057830 on 12q24.31 near SCARB1). Combined, these SNPs explain 1.7% of the residual variance in log alpha-tocopherol levels. In one of the two male GWAS cohorts (n= 992), no SNPs were significantly associated with gamma-tocopherol concentrations after including data from the replication sample for 71 independent SNPs with P< 1 × 10(-4) identified. PMID:21729881

Major, Jacqueline M; Yu, Kai; Wheeler, William; Zhang, Hong; Cornelis, Marilyn C; Wright, Margaret E; Yeager, Meredith; Snyder, Kirk; Weinstein, Stephanie J; Mondul, Alison; Eliassen, Heather; Purdue, Mark; Hazra, Aditi; McCarty, Catherine A; Hendrickson, Sara; Virtamo, Jarmo; Hunter, David; Chanock, Stephen; Kraft, Peter; Albanes, Demetrius

2011-07-05

28

Genome-wide association study identifies common variants associated with circulating vitamin E levels  

PubMed Central

In genome-wide association studies (GWAS) of common genetic variants associated with circulating alpha- and gamma-tocopherol concentrations in two adult cohorts comprising 5006 men of European descent, we observed three loci associated with alpha-tocopherol levels, two novel single-nucleotide polymorphisms (SNPs), rs2108622 on 19pter-p13.11 (P= 1.7 × 10?8) and rs11057830 on 12q24.31 (P= 2.0 × 10?8) and confirmed a previously reported locus marked by rs964184 on 11q23.3 (P= 2.7 × 10?10). The three SNPs have been reported to be associated with lipid metabolism and/or regulation. We replicated these findings in a combined meta-analysis with two independent samples, P= 7.8 × 10?12 (rs964184 on 11q23.3 near BUD13, ZNF259 and APOA1/C3/A4/A5), P= 1.4 × 10?10 (rs2108622 on 19pter-p13.11 near CYP4F2) and P= 8.2 × 10?9 (rs11057830 on 12q24.31 near SCARB1). Combined, these SNPs explain 1.7% of the residual variance in log alpha-tocopherol levels. In one of the two male GWAS cohorts (n= 992), no SNPs were significantly associated with gamma-tocopherol concentrations after including data from the replication sample for 71 independent SNPs with P< 1 × 10?4 identified.

Major, Jacqueline M.; Yu, Kai; Wheeler, William; Zhang, Hong; Cornelis, Marilyn C.; Wright, Margaret E.; Yeager, Meredith; Snyder, Kirk; Weinstein, Stephanie J.; Mondul, Alison; Eliassen, Heather; Purdue, Mark; Hazra, Aditi; McCarty, Catherine A.; Hendrickson, Sara; Virtamo, Jarmo; Hunter, David; Chanock, Stephen; Kraft, Peter; Albanes, Demetrius

2011-01-01

29

School Grounds Guide: A Pictured Guide for Identifying Common Organisms Found In and Around the School Ground.  

ERIC Educational Resources Information Center

|Designed for quick, easy identification of some of the most commonly encountered organisms found in and around the school ground, this illustrated guide identifies by a picture and a short biological description the common animals and plants found in and around school lawns, house lawns, parks, fence rows, flower gardens, vacant lots, and…

Bain, Rodney

30

School Grounds Guide: A Pictured Guide for Identifying Common Organisms Found In and Around the School Ground.  

ERIC Educational Resources Information Center

Designed for quick, easy identification of some of the most commonly encountered organisms found in and around the school ground, this illustrated guide identifies by a picture and a short biological description the common animals and plants found in and around school lawns, house lawns, parks, fence rows, flower gardens, vacant lots, and…

Bain, Rodney

31

Identifying Success and Tragedy of FLOSS Commons: A Preliminary Classification of Sourceforge.net Projects  

Microsoft Academic Search

Free\\/Libre and Open Source Software (FLOSS) projects are a form of commons where individuals work collectively to produce software that is a public, rather than a private, good. The famous phrase \\

Robert English; Charles M. Schweik

2007-01-01

32

Metabolic and cardiovascular traits: an abundance of recently identified common genetic variants  

Microsoft Academic Search

Genome-wide association studies are providing new insights into the genetic basis of metabolic and cardi- ovascular traits. In the past 3 years, common variants in 50 loci have been strongly associated with meta- bolic and cardiovascular traits. Several of these loci have implicated genes without a previously known connection with metabolism. Further studies will be required to characterize the full

Karen L. Mohlke; Michael Boehnke; Goncalo R. Abecasis

2008-01-01

33

Southern Pine Beetle Handbook. How to Identify Common Insect Associates of the Southern Pine Beetle.  

National Technical Information Service (NTIS)

Heavy timber damage by the southern pine beetle (Dendroctonus frontails Zimmermann) (SPB) and recent intensive research have resulted in the need to identify this subcorticular insect and its insect associates. Associates include insects reported to be pr...

2005-01-01

34

Meta-analysis identifies common variants associated with body mass index in east Asians.  

PubMed

Multiple genetic loci associated with obesity or body mass index (BMI) have been identified through genome-wide association studies conducted predominantly in populations of European ancestry. We performed a meta-analysis of associations between BMI and approximately 2.4 million SNPs in 27,715 east Asians, which was followed by in silico and de novo replication studies in 37,691 and 17,642 additional east Asians, respectively. We identified ten BMI-associated loci at genome-wide significance (P < 5.0 × 10(-8)), including seven previously identified loci (FTO, SEC16B, MC4R, GIPR-QPCTL, ADCY3-DNAJC27, BDNF and MAP2K5) and three novel loci in or near the CDKAL1, PCSK1 and GP2 genes. Three additional loci nearly reached the genome-wide significance threshold, including two previously identified loci in the GNPDA2 and TFAP2B genes and a newly identified signal near PAX6, all of which were associated with BMI with P < 5.0 × 10(-7). Findings from this study may shed light on new pathways involved in obesity and demonstrate the value of conducting genetic studies in non-European populations. PMID:22344219

Wen, Wanqing; Cho, Yoon-Shin; Zheng, Wei; Dorajoo, Rajkumar; Kato, Norihiro; Qi, Lu; Chen, Chien-Hsiun; Delahanty, Ryan J; Okada, Yukinori; Tabara, Yasuharu; Gu, Dongfeng; Zhu, Dingliang; Haiman, Christopher A; Mo, Zengnan; Gao, Yu-Tang; Saw, Seang-Mei; Go, Min-Jin; Takeuchi, Fumihiko; Chang, Li-Ching; Kokubo, Yoshihiro; Liang, Jun; Hao, Mei; Le Marchand, Loïc; Zhang, Yi; Hu, Yanling; Wong, Tien-Yin; Long, Jirong; Han, Bok-Ghee; Kubo, Michiaki; Yamamoto, Ken; Su, Mei-Hsin; Miki, Tetsuro; Henderson, Brian E; Song, Huaidong; Tan, Aihua; He, Jiang; Ng, Daniel P-K; Cai, Qiuyin; Tsunoda, Tatsuhiko; Tsai, Fuu-Jen; Iwai, Naoharu; Chen, Gary K; Shi, Jiajun; Xu, Jianfeng; Sim, Xueling; Xiang, Yong-Bing; Maeda, Shiro; Ong, Rick T H; Li, Chun; Nakamura, Yusuke; Aung, Tin; Kamatani, Naoyuki; Liu, Jian-Jun; Lu, Wei; Yokota, Mitsuhiro; Seielstad, Mark; Fann, Cathy S J; Wu, Jer-Yuarn; Lee, Jong-Young; Hu, Frank B; Tanaka, Toshihiro; Tai, E Shyong; Shu, Xiao-Ou

2012-02-19

35

Inhibitory avoidance memory retention in the elevated T-maze is impaired after perivascular manipulation of the common carotid arteries  

Microsoft Academic Search

Perivascular manipulation promoted by the positioning of a silicone collar around the common carotid arteries causes local inflammation and has been suggested as an animal model of atherosclerosis. This manipulation induces biochemical and morphological changes that are similar to those observed in the early stage of atherosclerosis in humans. Based on evidences showing that atherosclerosis is associated with cognitive deficits

Valquíria Camin de Bortoli; Hélio Zangrossi Júnior; Fernando Morgan de Aguiar Corrêa; Sebastião de Sousa Almeida; Ana Maria de Oliveira

2005-01-01

36

Meta-analysis identifies common variants associated with body mass index in East Asians  

PubMed Central

Multiple genetic loci associated with obesity or body mass index (BMI) have been identified through genome-wide association studies conducted predominantly in populations of European ancestry. We conducted a meta-analysis of associations between BMI and approximately 2.4 million SNPs in 27,715 East Asians, followed by in silico and de novo replication in 37,691 and 17,642 additional East Asians, respectively. We identified ten BMI-associated loci at the genome-wide significance level (P<5.0×10?8), including seven previously identified loci (FTO, SEC16B, MC4R, GIPR/QPCTL, ADCY3/RBJ, BDNF, and MAP2K5) and three novel loci in or near the CDKAL1,PCSK1, and GP2 genes. Three additional loci nearly reached the genome-wide significance threshold, including two previously identified loci in the GNPDA2 and TFAP2B genes and a new locus near PAX6, which all had P<5.0×10?7. Findings from this study may shed light on new pathways involved in obesity and demonstrate the value of conducting genetic studies in non-European populations.

Wen, Wanqing; Cho, Yoon Shin; Zheng, Wei; Dorajoo, Rajkumar; Kato, Norihiro; Qi, Lu; Chen, Chien-Hsiun; Delahanty, Ryan J.; Okada, Yukinori; Tabara, Yasuharu; Gu, Dongfeng; Zhu, Dingliang; Haiman, Christopher A.; Mo, Zengnan; Gao, Yu-Tang; Saw, Seang Mei; Go, Min Jin; Takeuchi, Fumihiko; Chang, Li-Ching; Kokubo, Yoshihiro; Liang, Jun; Hao, Mei; Marchand, Loic Le; Zhang, Yi; Hu, Yanling; Wong, Tien Yin; Long, Jirong; Han, Bok-Ghee; Kubo, Michiaki; Yamamoto, Ken; Su, Mei-Hsin; Miki, Tetsuro; Henderson, Brian E.; Song, Huaidong; Tan, Aihua; He, Jiang; Ng, Daniel P.-K.; Cai, Qiuyin; Tsunoda, Tatsuhiko; Tsai, Fuu-Jen; Iwai, Naoharu; Chen, Gary K.; Shi, Jiajun; Xu, Jianfeng; Sim, Xueling; Xiang, Yong-Bing; Maeda, Shiro; Ong, Rick T.H.; Li, Chun; Nakamura, Yusuke; Aung, Tin; Kamatani, Naoyuki; Liu, Jian Jun; Lu, Wei; Yokota, Mitsuhiro; Seielstad, Mark; Fann, Cathy S.J.; Wu, Jer-Yuarn; Lee, Jong-Young; Hu, Frank B.; Tanaka, Toshihiro; Tai, E. Shyong; Shu, Xiao Ou

2012-01-01

37

Rapid multiplex PCR assay to identify respiratory viral pathogens: moving forward diagnosing the common cold.  

PubMed

Upper respiratory tract infections (URIs) can be a serious burden to the healthcare system. The majority of URIs are viral in etiology, but definitive diagnosis can prove difficult due to frequently overlapping clinical presentations of viral and bacterial infections, and the variable sensitivity, and lengthy turn-around time of viral culture. We tested new automated nested multiplex PCR technology, the FilmArray(®) system, in the TAMC department of clinical investigations, to determine the feasibility of replacing the standard viral culture with a rapid turn-around system. We conducted a feasibility study using a single-blinded comparison study, comparing PCR results with archived viral culture results from a convenience sample of cryopreserved archived nasopharyngeal swabs from acutely ill ED patients who presented with complaints of URI symptoms. A total of 61 archived samples were processed. Viral culture had previously identified 31 positive specimens from these samples. The automated nested multiplex PCR detected 38 positive samples. In total, PCR was 94.5% concordant with the previously positive viral culture results. However, PCR was only 63.4% concordant with the negative viral culture results, owing to PCR detection of 11 additional viral pathogens not recovered on viral culture. The average time to process a sample was 75 minutes. We determined that an automated nested multiplex PCR is a feasible alternative to viral culture in an acute clinical setting. We were able to detect at least 94.5% as many viral pathogens as viral culture is able to identify, with a faster turn-around time. PMID:24052914

Layman, Clifton P; Gordon, Sarah M; Elegino-Steffens, Diane U; Agee, Willie; Barnhill, Jason; Hsue, Gunther

2013-09-01

38

Rapid Multiplex PCR Assay To Identify Respiratory Viral Pathogens: Moving Forward Diagnosing The Common Cold  

PubMed Central

Upper respiratory tract infections (URIs) can be a serious burden to the healthcare system. The majority of URIs are viral in etiology, but definitive diagnosis can prove difficult due to frequently overlapping clinical presentations of viral and bacterial infections, and the variable sensitivity, and lengthy turn-around time of viral culture. We tested new automated nested multiplex PCR technology, the FilmArray® system, in the TAMC department of clinical investigations, to determine the feasibility of replacing the standard viral culture with a rapid turn-around system. We conducted a feasibility study using a single-blinded comparison study, comparing PCR results with archived viral culture results from a convenience sample of cryopreserved archived nasopharyngeal swabs from acutely ill ED patients who presented with complaints of URI symptoms. A total of 61 archived samples were processed. Viral culture had previously identified 31 positive specimens from these samples. The automated nested multiplex PCR detected 38 positive samples. In total, PCR was 94.5% concordant with the previously positive viral culture results. However, PCR was only 63.4% concordant with the negative viral culture results, owing to PCR detection of 11 additional viral pathogens not recovered on viral culture. The average time to process a sample was 75 minutes. We determined that an automated nested multiplex PCR is a feasible alternative to viral culture in an acute clinical setting. We were able to detect at least 94.5% as many viral pathogens as viral culture is able to identify, with a faster turn-around time.

Gordon, Sarah M; Elegino-Steffens, Diane U; Agee, Willie; Barnhill, Jason; Hsue, Gunther

2013-01-01

39

Large-scale integrative network-based analysis identifies common pathways disrupted by copy number alterations across cancers  

PubMed Central

Background Many large-scale studies analyzed high-throughput genomic data to identify altered pathways essential to the development and progression of specific types of cancer. However, no previous study has been extended to provide a comprehensive analysis of pathways disrupted by copy number alterations across different human cancers. Towards this goal, we propose a network-based method to integrate copy number alteration data with human protein-protein interaction networks and pathway databases to identify pathways that are commonly disrupted in many different types of cancer. Results We applied our approach to a data set of 2,172 cancer patients across 16 different types of cancers, and discovered a set of commonly disrupted pathways, which are likely essential for tumor formation in majority of the cancers. We also identified pathways that are only disrupted in specific cancer types, providing molecular markers for different human cancers. Analysis with independent microarray gene expression datasets confirms that the commonly disrupted pathways can be used to identify patient subgroups with significantly different survival outcomes. We also provide a network view of disrupted pathways to explain how copy number alterations affect pathways that regulate cell growth, cycle, and differentiation for tumorigenesis. Conclusions In this work, we demonstrated that the network-based integrative analysis can help to identify pathways disrupted by copy number alterations across 16 types of human cancers, which are not readily identifiable by conventional overrepresentation-based and other pathway-based methods. All the results and source code are available at http://compbio.cs.umn.edu/NetPathID/.

2013-01-01

40

A geographical approach to identify phosphorus-efficient genotypes among landraces and wild ancestors of common bean  

Microsoft Academic Search

Cultivars of common bean (Phaseolus vulgaris L.) capable of yielding well at low levels of native or added phosphorus (P)\\u000a are highly desirable in many tropical production systems. The objective of the present study was to identify geographical\\u000a regions which might be sources of such genotypes. A total of 364 landraces, cultivars and wild genotypes, drawn from a broad\\u000a geographic

Stephen Beebe; Jonathan Lynch; Nicholas Galwey; Joseph Tohme; Ivan Ochoa

1997-01-01

41

An algorithm to identify medical practices common to both the General Practice Research Database and The Health Improvement Network database.  

PubMed

PURPOSE: To identify practices common to both the General Practice Research Database and The Health Improvement Network database for purposes of combining the databases for analysis without duplicate records. METHODS: We developed two independent algorithms to identify practices common to the two databases. The first used the total number of patients in the therapy and clinical data sets and the total number of etoricoxib and celecoxib users each year during the study period. The second used the total number of patients stratified by gender and four different categories of birth year. Further checking of potential matched practice pairs identified by the two algorithms was performed by comparing the patient-level medical records by birth year, dates of clinical visits, and diagnosis codes. RESULTS: Three hundred twelve potential matched pairs of practices were found by both algorithms. Fifteen additional potential pairs were matched by only one algorithm: 13 by algorithm 1 (A1) only and 2 by algorithm 2 (A2) only. The examination of the patient-level visit dates and diagnosis codes for the matches revealed that all of the 327 potential pairs of duplicate practices were in fact the same practice in the two databases. CONCLUSIONS: The two algorithms successfully found the practices common to the two different databases without de-identifying the practices. The identification of the common practices allows for combining the two databases without duplicate records to create a larger data set for analysis, with 168 more practices than when using the General Practice Research Database alone, or with 268 more practices than when using The Health Improvement Network alone. Copyright © 2012 John Wiley & Sons, Ltd. PMID:22544805

Cai, Bing; Xu, Weifeng; Bortnichak, Edward; Watson, Douglas J

2012-04-30

42

Study of eight GWAS-identified common variants for association with obesity-related indices in Chinese children at puberty  

Microsoft Academic Search

OBJECTIVE:Genome-wide association studies (GWAS) have identified some common variants associated with obesity risk in European descents. However, their influences on obesity-related indices for the Chinese children at puberty are not widely clear yet. To address this question, we conducted a study that aims to examine effects of eight previously reported GWAS single-nucleotide polymorphisms (SNPs) on four obesity-related indices in a

J Wang; H Mei; W Chen; Y Jiang; W Sun; F Li; Q Fu; F Jiang

2012-01-01

43

Health communication instruction: toward identifying common learning goals, course content, and pedagogical strategies to guide curricular development.  

PubMed

Health communication is a vibrant and growing area of the communication discipline, with an abundance of theoretically grounded scholarship and practical application at many levels. Despite this growth, there has yet to be a published description of health communication pedagogy that could identify common conceptual approaches and teaching practices. To help address this gap, an online survey of health communication instructors at 77 colleges and universities throughout the United States was conducted. The questionnaire elicited information about the general characteristics of the institutions and the courses, learning goals, content areas, teaching strategies, and pedagogical practices. Key limitations are highlighted and some recent systematic curricular programs are then presented. PMID:17523859

Query, Jim L; Wright, Kevin B; Bylund, Carma L; Mattson, Marifran

2007-01-01

44

Identifying common pressure pathways from a complex network of human activities to support ecosystem-based management.  

PubMed

The marine environment is heavily exploited, but unintentional consequences cause wide-ranging negative effects to its characteristics. Linkage frameworks (e.g., DPSIR [driver-pressure-state-impact-response]) are commonly used to describe an interaction between human activities and ecological characteristics of the ecosystem, but as each linkage is viewed independently, the diversity of pressures that affect those characteristics may not be identified or managed effectively. Here we demonstrate an approach for using linkages to build a simple network to capture the complex relationships arising from multiple sectors and their activities. Using data-analysis tools common to ecology, we show how linkages can be placed into mechanistically similar groups. Management measures can be combined into fewer and more simplified measures that target groups of pressures rather than individual pressures, which is likely to increase compliance and the success of the measure while reducing the cost of enforcement. Given that conservation objectives (regional priorities) can vary, we also demonstrate by way of a case study example from the Marine Strategy Framework Directive, how management priorities might change, and illustrate how the approach can be used to identify sectors for control that best support the conservation objectives. PMID:23865227

Knights, Antony M; Koss, Rebecca S; Robinson, Leonie A

2013-06-01

45

Development of a high-throughput microsphere-based molecular assay to identify fifteen common bloodmeal hosts of Culex mosquitoes  

PubMed Central

For vectorborne infections, host selection by bloodfeeding arthropods dictates the interaction between host and pathogen. Because Culex mosquitoes that transmit West Nile virus (WNV) feed both on mammalian and avian hosts with varying competence, understanding the bloodfeeding patterns of these mosquitoes is important for understanding the transmission dynamics of WNV. Herein, we describe a new microsphere-based assay using Luminex xMAP® technology to rapidly identify 15 common hosts of Culex mosquitoes at our California study sites. The assay was verified with over 100 known vertebrate species samples and was used in conjunction with DNA sequencing to identify over 125 avian and mammalian host species from unknown Culex bloodmeals, more quickly and with less expense than sequencing alone. In addition, with multiplexed labeled probes, this microsphere array identified mixed bloodmeals that were difficult to discern with traditional sequencing. The microsphere set was easily expanded or reduced according to host range in a specific area, and this assay has made it possible to rapidly screen thousands of Culex spp. bloodmeals to extend our understanding of WNV transmission patterns.

Thiemann, TC; Brault, AC; Ernest, HB; Reisen, WK

2011-01-01

46

Network-based SNP meta-analysis identifies joint and disjoint genetic features across common human diseases  

PubMed Central

Background Genome-wide association studies (GWAS) have provided a large set of genetic loci influencing the risk for many common diseases. Association studies typically analyze one specific trait in single populations in an isolated fashion without taking into account the potential phenotypic and genetic correlation between traits. However, GWA data can be efficiently used to identify overlapping loci with analogous or contrasting effects on different diseases. Results Here, we describe a new approach to systematically prioritize and interpret available GWA data. We focus on the analysis of joint and disjoint genetic determinants across diseases. Using network analysis, we show that variant-based approaches are superior to locus-based analyses. In addition, we provide a prioritization of disease loci based on network properties and discuss the roles of hub loci across several diseases. We demonstrate that, in general, agonistic associations appear to reflect current disease classifications, and present the potential use of effect sizes in refining and revising these agonistic signals. We further identify potential branching points in disease etiologies based on antagonistic variants and describe plausible small-scale models of the underlying molecular switches. Conclusions The observation that a surprisingly high fraction (>15%) of the SNPs considered in our study are associated both agonistically and antagonistically with related as well as unrelated disorders indicates that the molecular mechanisms influencing causes and progress of human diseases are in part interrelated. Genetic overlaps between two diseases also suggest the importance of the affected entities in the specific pathogenic pathways and should be investigated further.

2012-01-01

47

High-resolution genomic analysis in Waldenström's macroglobulinemia identifies disease-specific and common abnormalities with marginal zone lymphomas.  

PubMed

Cytogenetic analyses have been historically limited in Waldenström's macroglobulinemia (WM) by the difficulty to obtain tumor metaphases. Thus, few recurrent karyotypic abnormalities have been reported and the molecular consequences of these imbalances are largely unknown. We used an array-based comparative genomic hybridization approach to better characterize the recurrent chromosome abnormalities associated with WM pathogenesis and to compare them with the publicly available findings in other B-cell neoplasias. The majority of the recurrent chromosome abnormalities identified in WM were shared with marginal zone lymphomas (MZL), as deletions of 6q23 and 13q14 and gains of 3q13-q28, 6p and 18q. On the other hand, gains of 4q and 8q were recurrently identified in WM but have not been described as being common abnormalities in MZL. The genetic consequences of these specific abnormalities remain elusive and further studies are critical to refine the search and to precise the molecular pathways affected by these abnormalities. PMID:19362969

Braggio, Esteban; Keats, Jonathan J; Leleu, Xavier; Wier, Scott Van; Jimenez-Zepeda, Victor Hugo; Schop, Roelandt F J; Chesi, Marta; Barrett, Michael; Stewart, Alexander Keith; Dogan, Ahmet; Bergsagel, Peter Leif; Ghobrial, Irene M; Fonseca, Rafael

2009-03-01

48

A common rejection module (CRM) for acute rejection across multiple organs identifies novel therapeutics for organ transplantation.  

PubMed

Using meta-analysis of eight independent transplant datasets (236 graft biopsy samples) from four organs, we identified a common rejection module (CRM) consisting of 11 genes that were significantly overexpressed in acute rejection (AR) across all transplanted organs. The CRM genes could diagnose AR with high specificity and sensitivity in three additional independent cohorts (794 samples). In another two independent cohorts (151 renal transplant biopsies), the CRM genes correlated with the extent of graft injury and predicted future injury to a graft using protocol biopsies. Inferred drug mechanisms from the literature suggested that two FDA-approved drugs (atorvastatin and dasatinib), approved for nontransplant indications, could regulate specific CRM genes and reduce the number of graft-infiltrating cells during AR. We treated mice with HLA-mismatched mouse cardiac transplant with atorvastatin and dasatinib and showed reduction of the CRM genes, significant reduction of graft-infiltrating cells, and extended graft survival. We further validated the beneficial effect of atorvastatin on graft survival by retrospective analysis of electronic medical records of a single-center cohort of 2,515 renal transplant patients followed for up to 22 yr. In conclusion, we identified a CRM in transplantation that provides new opportunities for diagnosis, drug repositioning, and rational drug design. PMID:24127489

Khatri, Purvesh; Roedder, Silke; Kimura, Naoyuki; De Vusser, Katrien; Morgan, Alexander A; Gong, Yongquan; Fischbein, Michael P; Robbins, Robert C; Naesens, Maarten; Butte, Atul J; Sarwal, Minnie M

2013-10-14

49

Meta-analysis of genome-wide association studies identifies common variants in CTNNA2 associated with excitement-seeking.  

PubMed

The tendency to seek stimulating activities and intense sensations define excitement-seeking, a personality trait akin to some aspects of sensation-seeking. This trait is a central feature of extraversion and is a component of the multifaceted impulsivity construct. Those who score high on measures of excitement-seeking are more likely to smoke, use other drugs, gamble, drive recklessly, have unsafe/unprotected sex and engage in other risky behaviors of clinical and social relevance. To identify common genetic variants associated with the Excitement-Seeking scale of the Revised NEO Personality Inventory, we performed genome-wide association studies in six samples of European ancestry (N=7860), and combined the results in a meta-analysis. We identified a genome-wide significant association between the Excitement-Seeking scale and rs7600563 (P=2 × 10(-8)). This single-nucleotide polymorphism maps within the catenin cadherin-associated protein, alpha 2 (CTNNA2) gene, which encodes for a brain-expressed ?-catenin critical for synaptic contact. The effect of rs7600563 was in the same direction in all six samples, but did not replicate in additional samples (N=5105). The results provide insight into the genetics of excitement-seeking and risk-taking, and are relevant to hyperactivity, substance use, antisocial and bipolar disorders. PMID:22833195

Terracciano, A; Esko, T; Sutin, A R; de Moor, M H M; Meirelles, O; Zhu, G; Tanaka, T; Giegling, I; Nutile, T; Realo, A; Allik, J; Hansell, N K; Wright, M J; Montgomery, G W; Willemsen, G; Hottenga, J-J; Friedl, M; Ruggiero, D; Sorice, R; Sanna, S; Cannas, A; Räikkönen, K; Widen, E; Palotie, A; Eriksson, J G; Cucca, F; Krueger, R F; Lahti, J; Luciano, M; Smoller, J W; van Duijn, C M; Abecasis, G R; Boomsma, D I; Ciullo, M; Costa, P T; Ferrucci, L; Martin, N G; Metspalu, A; Rujescu, D; Schlessinger, D; Uda, M

2011-10-18

50

Meta-analysis of genome-wide association studies identifies common variants in CTNNA2 associated with excitement-seeking  

PubMed Central

The tendency to seek stimulating activities and intense sensations define excitement-seeking, a personality trait akin to some aspects of sensation-seeking. This trait is a central feature of extraversion and is a component of the multifaceted impulsivity construct. Those who score high on measures of excitement-seeking are more likely to smoke, use other drugs, gamble, drive recklessly, have unsafe/unprotected sex and engage in other risky behaviors of clinical and social relevance. To identify common genetic variants associated with the Excitement-Seeking scale of the Revised NEO Personality Inventory, we performed genome-wide association studies in six samples of European ancestry (N=7860), and combined the results in a meta-analysis. We identified a genome-wide significant association between the Excitement-Seeking scale and rs7600563 (P=2 × 10?8). This single-nucleotide polymorphism maps within the catenin cadherin-associated protein, alpha 2 (CTNNA2) gene, which encodes for a brain-expressed ?-catenin critical for synaptic contact. The effect of rs7600563 was in the same direction in all six samples, but did not replicate in additional samples (N=5105). The results provide insight into the genetics of excitement-seeking and risk-taking, and are relevant to hyperactivity, substance use, antisocial and bipolar disorders.

Terracciano, A; Esko, T; Sutin, A R; de Moor, M H M; Meirelles, O; Zhu, G; Tanaka, T; Giegling, I; Nutile, T; Realo, A; Allik, J; Hansell, N K; Wright, M J; Montgomery, G W; Willemsen, G; Hottenga, J-J; Friedl, M; Ruggiero, D; Sorice, R; Sanna, S; Cannas, A; Raikkonen, K; Widen, E; Palotie, A; Eriksson, J G; Cucca, F; Krueger, R F; Lahti, J; Luciano, M; Smoller, J W; van Duijn, C M; Abecasis, G R; Boomsma, D I; Ciullo, M; Costa, P T; Ferrucci, L; Martin, N G; Metspalu, A; Rujescu, D; Schlessinger, D; Uda, M

2011-01-01

51

Development of monoclonal antibodies that identify Vibrio species commonly isolated from infections of humans, fish, and shellfish.  

PubMed Central

Monoclonal antibodies (MAbs) against Vibrio species that infect humans, fish, and shellfish were developed for application in rapid identifications. The pathogens included Vibrio alginolyticus, V. anguillarum, V. carchariae, V. cholerae, V. damsela, V. furnissii, V. harveyi, V. ordalii, V. parahaemolyticus, and V. vulnificus. Three types of MAbs were selected. The first important group included MAbs that reacted with only a single species. A second group comprised a number of MAbs that reacted with two, taxonomically closely related Vibrio species. For example, of 22 MAbs raised against V. alginolyticus, 6 recognized a 52-kDa flagellar H antigen common to both V. alginolyticus and V. parahaemolyticus; V. anguillarum and V. ordalii also shared antigens. A third group included three genus-specific MAbs that reacted with almost all Vibrio species but did not react with other members of the family Vibrionaceae (e.g., members of the Aeromonas, Photobacterium, and Plesiomonas genera) or a wide range of gram-negative bacteria representing many genera. This last group indicated the possible existence of an antigenic determinant common to Vibrio species. Two of these three genus-specific MAbs reacted with heat-stable antigenic determinants of Vibrio species as well as lipopolysaccharide extracted from Vibrio species. The use of the MAbs in blind tests and diagnosis of clinical isolates indicated that three different types of bacteria, viz., live, formalin-fixed, and sodium azide-killed bacteria, were detected consistently. Overall, it was found that the genus-specific MAbs were very useful for rapidly identifying vibrios in the screening of acute infections, while the species-specific MAbs and others were useful for completing the diagnosis. Images

Chen, D; Hanna, P J; Altmann, K; Smith, A; Moon, P; Hammond, L S

1992-01-01

52

Academic Advising, Retention, and Transfer.  

ERIC Educational Resources Information Center

|Stresses the central role of academic advising in student retention. Reviews Tinto's model of retention stressing the importance of student academic and social integration. Describes studies demonstrating the predictive validity of integration for retention, and identifying attitudinal and behavioral correlates of attrition. Reviews obstacles to…

King, Margaret C.

1993-01-01

53

Genome-wide association study identifies three common variants associated with serologic response to vitamin E supplementation in men.  

PubMed

Vitamin E inhibits lipid peroxidation in cell membranes, prevents oxidative damage to DNA by scavenging free radicals, and reduces carcinogen production. No study to our knowledge, however, has examined the association between genetic variants and response to long-term vitamin E supplementation. We conducted a genome-wide association study (GWAS) of common variants associated with circulating ?-tocopherol concentrations following 3 y of controlled supplementation. The study population included 2112 middle-aged, male smokers in the Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study cohort who received a trial supplementation of ?-tocopherol (50 mg/d) and had fasting serum ?-tocopherol concentrations measured after 3 y. Serum concentrations were log-transformed for statistical analysis and general linear models adjusted for age, BMI, serum total cholesterol, and cancer case status. Associations with serum response to ?-tocopherol supplementation achieved genome-wide significance for 2 single nucleotide polymorphisms (SNP): rs964184 on 11q23.3 (P = 2.6 × 10(-12)) and rs2108622 on 19pter-p13.11 (P = 2.2 × 10(-7)), and approached genome-wide significance for one SNP, rs7834588 on 8q12.3 (P = 6.2 × 10(-7)). Combined, these SNP explain 3.4% of the residual variance in serum ?-tocopherol concentrations during controlled vitamin E supplementation. A GWAS has identified 3 genetic variants at different loci that appear associated with serum concentrations after vitamin E supplementation in men. Identifying genetic variants that influence serum nutrient biochemical status (e.g., ?-tocopherol) under supplementation conditions improves our understanding of the biological determinants of these nutritional exposures and their associations with cancer etiology. PMID:22437554

Major, Jacqueline M; Yu, Kai; Chung, Charles C; Weinstein, Stephanie J; Yeager, Meredith; Wheeler, William; Snyder, Kirk; Wright, Margaret E; Virtamo, Jarmo; Chanock, Stephen; Albanes, Demetrius

2012-03-21

54

Genome-Wide Association Study Identifies Three Common Variants Associated with Serologic Response to Vitamin E Supplementation in Men1234  

PubMed Central

Vitamin E inhibits lipid peroxidation in cell membranes, prevents oxidative damage to DNA by scavenging free radicals, and reduces carcinogen production. No study to our knowledge, however, has examined the association between genetic variants and response to long-term vitamin E supplementation. We conducted a genome-wide association study (GWAS) of common variants associated with circulating ?-tocopherol concentrations following 3 y of controlled supplementation. The study population included 2112 middle-aged, male smokers in the Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study cohort who received a trial supplementation of ?-tocopherol (50 mg/d) and had fasting serum ?-tocopherol concentrations measured after 3 y. Serum concentrations were log-transformed for statistical analysis and general linear models adjusted for age, BMI, serum total cholesterol, and cancer case status. Associations with serum response to ?-tocopherol supplementation achieved genome-wide significance for 2 single nucleotide polymorphisms (SNP): rs964184 on 11q23.3 (P = 2.6 × 10?12) and rs2108622 on 19pter-p13.11 (P = 2.2 × 10?7), and approached genome-wide significance for one SNP, rs7834588 on 8q12.3 (P = 6.2 × 10?7). Combined, these SNP explain 3.4% of the residual variance in serum ?-tocopherol concentrations during controlled vitamin E supplementation. A GWAS has identified 3 genetic variants at different loci that appear associated with serum concentrations after vitamin E supplementation in men. Identifying genetic variants that influence serum nutrient biochemical status (e.g., ?-tocopherol) under supplementation conditions improves our understanding of the biological determinants of these nutritional exposures and their associations with cancer etiology.

Major, Jacqueline M.; Yu, Kai; Chung, Charles C.; Weinstein, Stephanie J.; Yeager, Meredith; Wheeler, William; Snyder, Kirk; Wright, Margaret E.; Virtamo, Jarmo; Chanock, Stephen; Albanes, Demetrius

2012-01-01

55

Studies of natural allele effects in mice can be used to identify genes causing common human obesity.  

PubMed

Although genes causing rare Mendelian forms of human obesity have provided much useful information about underlying causes of obesity, these genes do not explain significant proportions of common obesity. This review presents evidence that animal models can be used to uncover subtle genetic effects on obesity and can provide a powerful rigorous compliment to human association studies. We discuss the advantages of animal models of obesity, various approaches to discovering obesity genes, and the future of mapping and isolating naturally occurring alleles of obesity genes. We review evidence that it is important to map naturally occurring obesity genes using quantitative trait locus (QTL) mapping, instead of mutagenesis and knockout models because the latter do not allow study of interactions and because naturally occurring obesity alleles can interfere with cloning from mutagenesis projects. Because a substantial percentage of human obesity results from complex interactions, the underlying genes can only be identified by direct studies in humans, which are still very difficult, or by studies in mice that begin with QTL mapping. Finally, we emphasize that animal model studies can be used to prove that a specific gene, only associated with obesity in humans, can indeed be the underlying cause of obesity in mammals. PMID:14649375

Diament, A L; Fisler, J S; Warden, C H

2003-11-01

56

Detection of feeding behaviour in common carp Cyprinus carpio by using an acceleration data logger to identify mandibular movement.  

PubMed

Miniaturized acceleration data loggers were attached to the lower mandible of common carp Cyprinus carpio to remotely identify feeding behaviour. Whether the acceleration signal could distinguish the quantity and quality of food was also investigated. The frequency and amplitude of the lower mandible stroke, calculated from surging acceleration determined by continuous wavelet transformation, significantly increased during the feeding period compared to that during the non-feeding period. These characteristic movement patterns were maintained for mean ±s.e. 187·3 ± 38·2 s when the fish were fed a single item of food and for mean ±s.e. 419·3 ± 28·6 s when they consumed multiple items. The dominant cycle and amplitude calculated according to feeding event duration, however, did not differ significantly between the two types of diets the fish consumed. Surging acceleration could detect mean ±s.e. 89·8 ± 13·5% of feeding events, although the false detection rate was mean ±s.e. 25·9 ± 10·9%. The results indicate that the mandible acceleration measurement method could be utilized to detect and record the feeding events in fishes that use a suction feeding mode similar to C. carpio. PMID:22551186

Makiguchi, Y; Sugie, Y; Kojima, T; Naito, Y

2012-05-01

57

Short non-coding RNAs as bacteria species identifiers detected by surface plasmon resonance enhanced common path interferometry  

NASA Astrophysics Data System (ADS)

Small non-coding RNA sequences have recently been discovered as unique identifiers of certain bacterial species, raising the possibility that they can be used as highly specific Biowarfare Agent detection markers in automated field deployable integrated detection systems. Because they are present in high abundance they could allow genomic based bacterial species identification without the need for pre-assay amplification. Further, a direct detection method would obviate the need for chemical labeling, enabling a rapid, efficient, high sensitivity mechanism for bacterial detection. Surface Plasmon Resonance enhanced Common Path Interferometry (SPR-CPI) is a potentially market disruptive, high sensitivity dual technology that allows real-time direct multiplex measurement of biomolecule interactions, including small molecules, nucleic acids, proteins, and microbes. SPR-CPI measures differences in phase shift of reflected S and P polarized light under Total Internal Reflection (TIR) conditions at a surface, caused by changes in refractive index induced by biomolecular interactions within the evanescent field at the TIR interface. The measurement is performed on a microarray of discrete 2-dimensional areas functionalized with biomolecule capture reagents, allowing simultaneous measurement of up to 100 separate analytes. The optical beam encompasses the entire microarray, allowing a solid state detector system with no scanning requirement. Output consists of simultaneous voltage measurements proportional to the phase differences resulting from the refractive index changes from each microarray feature, and is automatically processed and displayed graphically or delivered to a decision making algorithm, enabling a fully automatic detection system capable of rapid detection and quantification of small nucleic acids at extremely sensitive levels. Proof-of-concept experiments on model systems and cell culture samples have demonstrated utility of the system, and efforts are in progress for full development and deployment of the device. The technology has broad applicability as a universal detection platform for BWA detection, medical diagnostics, and drug discovery research, and represents a new class of instrumentation as a rapid, high sensitivity, label-free methodology.

Greef, Charles; Petropavlovskikh, Viatcheslav; Nilsen, Oyvind; Khattatov, Boris; Plam, Mikhail; Gardner, Patrick; Hall, John

2008-05-01

58

Large-scale meta-analysis of cancer microarray data identifies common transcriptional profiles of neoplastic transformation and progression  

Microsoft Academic Search

Many studies have used DNA microarrays to identify the gene expression signatures of human cancer, yet the critical features of these often unmanageably large signatures remain elusive. To address this, we developed a statistical method, comparative metaprofiling, which identifies and assesses the intersection of multiple gene expression signatures from a diverse collection of microarray data sets. We collected and analyzed

Daniel R. Rhodes; K. Shanker; Nandan Deshpande; Radhika Varambally; Debashis Ghosh; Terrence Barrette; Akhilesh Pandey; Arul M. Chinnaiyan

2004-01-01

59

Strategies to improve engineering retention  

Microsoft Academic Search

Victoria University of Wellington in partnership with the regional polytechnic, WelTec, undertook a major exercise to identify, and where possible, resolve, barriers to recruitment and retention in the “digital” engineering specializations. This paper focuses on the retention aspects of this research. Informed by student surveys, focus groups and secondary school academic achievement data, we identified contributing issues of academic preparation,

Dale. A. Carnegie; Craig Watterson; Will N. Browne; James MacKay; Mel Lock; John Williams; Michael Forret

2012-01-01

60

Identifying Future Sacred Heart Administrators by Examining the Characteristics, Commonalities, and Personal Motivations of Current School Leaders  

ERIC Educational Resources Information Center

|Since their inception, all schools of the Sacred Heart have been headed by nuns of the Religious of the Sacred Heart of Jesus [RSCJ]. As the years have passed, many RSCJ nuns have aged and retired leaving vacancies that have proven difficult to fill. In this qualitative study, the characteristics, commonalities, and personal motivations of Sacred…

Teixeira, Julie Brill

2012-01-01

61

To watch or not to watch? That is the question. Identifying the common characteristics of the reality television viewing audience  

Microsoft Academic Search

Reality television shows are increasingly appearing on network and cable outlets each sea¬son. Not only are they advancing in number, they are consistently dominating the weekly Nielsen’s Top 10 ratings as well. This study seeks to identify the reality television show viewing audience, why captivated their interest to begin watching these shows and what kept them watching week-to-week. By identifying

Laura Sipple

2008-01-01

62

Boresight Retention.  

National Technical Information Service (NTIS)

This report provides a method of evaluating the boresight retention capability of gun control systems mounted in combat vehicles. It describes equipment and instrumentation including installation of reference telescopes. It also includes angular measureme...

1976-01-01

63

Boresight Retention.  

National Technical Information Service (NTIS)

This TOP describes procedures for evaluating the boresight retention capability of gun control systems mounted in combat vehicles other than field artillery weapons. The tests are designed to detect angular changes between gun and sighting systems after v...

1983-01-01

64

Comparison of Sepsis-Induced Transcriptomic Changes in a Murine Model to Clinical Blood Samples Identifies Common Response Patterns  

PubMed Central

Experimental models, mimicking physiology, and molecular dynamics of diseases in human, harbor the possibility to study the effect of interventions and transfer results from bench to bedside. Recent advances in high-throughput technologies, standardized protocols, and integration of knowledge from databases yielded rising consistency and usability of results for inter-species comparisons. Here, we explored similarities and dissimilarities in gene expression from blood samples of a murine sepsis model (peritoneal contamination and infection, PCI) and patients from the pediatric intensive care unit (PICU) measured by microarrays. Applying a consistent pre-processing and analysis workflow, differentially expressed genes (DEG) from PCI and PICU data significantly overlapped. A major fraction of DEG was commonly expressed and mapped to adaptive and innate immune response related pathways, whereas the minor fraction, including the chemokine (C–C motif) ligand 4, exhibited constant inter-species disparities. Reproducibility of transcriptomic observations was validated experimentally in PCI. These data underline, that inter-species comparison can obtain commonly expressed transcriptomic features despite missing homologs and different protocols. Our findings point toward a high suitability of an animal sepsis model and further experimental efforts in order to transfer results from animal experiments to the bedside.

Lambeck, Sandro; Weber, Martina; Gonnert, Falk A.; Mrowka, Ralf; Bauer, Michael

2012-01-01

65

Identifying the unique and common characteristics among the dsm-iv antisocial, borderline, and narcissistic personality disorders  

Microsoft Academic Search

A clinical chart-review study of the Cluster B personality disorders (PDs) was conducted to evaluate the specificity of DSM-IV criteria for the Antisocial Personality Disorder (ANPD), Borderline Personality Disorder (BPD); and Narcissistic Personality Disorder (NPD). Eighty-six outpatients meeting DSM-IV criteria for a PD were identified through a retrospective chart-review procedure. Records of these 86 patients were independently rated on all

Daniel J Holdwick; Mark J Hilsenroth; Frank D Castlebury; Mark A Blais

1998-01-01

66

Meta-analysis of genome-wide association studies identifies common variants associated with blood pressure variation in east Asians  

Microsoft Academic Search

We conducted a meta-analysis of genome-wide association studies of systolic (SBP) and diastolic (DBP) blood pressure in 19,608 subjects of east Asian ancestry from the AGEN-BP consortium followed up with de novo genotyping (n = 10,518) and further replication (n = 20,247) in east Asian samples. We identified genome-wide significant (P < 5 × 10?8) associations with SBP or DBP,

Fumihiko Takeuchi; Yasuharu Tabara; Tanika N Kelly; Min Jin Go; Xueling Sim; Wan Ting Tay; Chien-Hsiun Chen; Yi Zhang; Ken Yamamoto; Tomohiro Katsuya; Mitsuhiro Yokota; Young Jin Kim; Rick Twee Hee Ong; Toru Nabika; Dongfeng Gu; Li-ching Chang; Yoshihiro Kokubo; Wei Huang; Keizo Ohnaka; Yukio Yamori; Eitaro Nakashima; Cashell E Jaquish; Jong-Young Lee; Mark Seielstad; Masato Isono; James E Hixson; Yuan-Tsong Chen; Tetsuro Miki; Xueya Zhou; Takao Sugiyama; Jae-Pil Jeon; Jian Jun Liu; Ryoichi Takayanagi; Sung Soo Kim; Tin Aung; Yun Ju Sung; Xuegong Zhang; Tien Yin Wong; Bok-Ghee Han; Shotai Kobayashi; Toshio Ogihara; Dingliang Zhu; Naoharu Iwai; Jer-Yuarn Wu; Yik Ying Teo; E Shyong Tai; Yoon Shin Cho; Jiang He; Norihiro Kato

2011-01-01

67

Common variants in the JAZF1 gene associated with height identified by linkage and genome-wide association analysis  

PubMed Central

Genes for height have gained interest for decades, but only recently have candidate genes started to be identified. We have performed linkage analysis and genome-wide association for height in approximately 4000 individuals from five European populations. A total of five chromosomal regions showed suggestive linkage and in one of these regions, two SNPs (rs849140 and rs1635852) were associated with height (nominal P = 7.0 × 10?8 and P = 9.6 × 10?7, respectively). In total, five SNPs across the genome showed an association with height that reached the threshold of genome-wide significance (nominal P < 1.6 × 10?7). The association with height was replicated for two SNPs (rs1635852 and rs849140) using three independent studies (n = 31 077, n=1268 and n = 5746) with overall meta P-values of 9.4 × 10?10 and 5.3 × 10?8. These SNPs are located in the JAZF1 gene, which has recently been associated with type II diabetes, prostate and endometrial cancer. JAZF1 is a transcriptional repressor of NR2C2, which results in low IGF1 serum concentrations, perinatal and early postnatal hypoglycemia and growth retardation when knocked out in mice. Both the linkage and association analyses independently identified the JAZF1 region affecting human height. We have demonstrated, through replication in additional independent populations, the consistency of the effect of the JAZF1 SNPs on height. Since this gene also has a key function in the metabolism of growth, JAZF1 represents one of the strongest candidates influencing human height identified so far.

Johansson, Asa; Marroni, Fabio; Hayward, Caroline; Franklin, Christopher S.; Kirichenko, Anatoly V.; Jonasson, Inger; Hicks, Andrew A.; Vitart, Veronique; Isaacs, Aaron; Axenovich, Tatiana; Campbell, Susan; Dunlop, Malcolm G.; Floyd, Jamie; Hastie, Nick; Hofman, Albert; Knott, Sara; Kolcic, Ivana; Pichler, Irene; Polasek, Ozren; Rivadeneira, Fernando; Tenesa, Albert; Uitterlinden, Andre G.; Wild, Sarah H.; Zorkoltseva, Irina V.; Meitinger, Thomas; Wilson, James F.; Rudan, Igor; Campbell, Harry; Pattaro, Cristian; Pramstaller, Peter; Oostra, Ben A.; Wright, Alan F.; van Duijn, Cornelia M.; Aulchenko, Yurii S.; Gyllensten, Ulf

2009-01-01

68

Genome-wide association study to identify common variants associated with brachial circumference: a meta-analysis of 14 cohorts.  

PubMed

Brachial circumference (BC), also known as upper arm or mid arm circumference, can be used as an indicator of muscle mass and fat tissue, which are distributed differently in men and women. Analysis of anthropometric measures of peripheral fat distribution such as BC could help in understanding the complex pathophysiology behind overweight and obesity. The purpose of this study is to identify genetic variants associated with BC through a large-scale genome-wide association scan (GWAS) meta-analysis. We used fixed-effects meta-analysis to synthesise summary results across 14 GWAS discovery and 4 replication cohorts comprising overall 22,376 individuals (12,031 women and 10,345 men) of European ancestry. Individual analyses were carried out for men, women, and combined across sexes using linear regression and an additive genetic model: adjusted for age and adjusted for age and BMI. We prioritised signals for follow-up in two-stages. We did not detect any signals reaching genome-wide significance. The FTO rs9939609 SNP showed nominal evidence for association (p<0.05) in the age-adjusted strata for men and across both sexes. In this first GWAS meta-analysis for BC to date, we have not identified any genome-wide significant signals and do not observe robust association of previously established obesity loci with BC. Large-scale collaborations will be necessary to achieve higher power to detect loci underlying BC. PMID:22479309

Boraska, Vesna; Day-Williams, Aaron; Franklin, Christopher S; Elliott, Katherine S; Panoutsopoulou, Kalliope; Tachmazidou, Ioanna; Albrecht, Eva; Bandinelli, Stefania; Beilin, Lawrence J; Bochud, Murielle; Cadby, Gemma; Ernst, Florian; Evans, David M; Hayward, Caroline; Hicks, Andrew A; Huffman, Jennifer; Huth, Cornelia; James, Alan L; Klopp, Norman; Kolcic, Ivana; Kutalik, Zoltán; Lawlor, Debbie A; Musk, Arthur W; Pehlic, Marina; Pennell, Craig E; Perry, John R B; Peters, Annette; Polasek, Ozren; St Pourcain, Beate; Ring, Susan M; Salvi, Erika; Schipf, Sabine; Staessen, Jan A; Teumer, Alexander; Timpson, Nicholas; Vitart, Veronique; Warrington, Nicole M; Yaghootkar, Hanieh; Zemunik, Tatijana; Zgaga, Lina; An, Ping; Anttila, Verneri; Borecki, Ingrid B; Holmen, Jostein; Ntalla, Ioanna; Palotie, Aarno; Pietiläinen, Kirsi H; Wedenoja, Juho; Winsvold, Bendik S; Dedoussis, George V; Kaprio, Jaakko; Province, Michael A; Zwart, John-Anker; Burnier, Michel; Campbell, Harry; Cusi, Daniele; Smith, George Davey; Frayling, Timothy M; Gieger, Christian; Palmer, Lyle J; Pramstaller, Peter P; Rudan, Igor; Völzke, Henry; Wichmann, H-Erich; Wright, Alan F; Zeggini, Eleftheria

2012-03-29

69

Genome-Wide Association Study to Identify Common Variants Associated with Brachial Circumference: A Meta-Analysis of 14 Cohorts  

PubMed Central

Brachial circumference (BC), also known as upper arm or mid arm circumference, can be used as an indicator of muscle mass and fat tissue, which are distributed differently in men and women. Analysis of anthropometric measures of peripheral fat distribution such as BC could help in understanding the complex pathophysiology behind overweight and obesity. The purpose of this study is to identify genetic variants associated with BC through a large-scale genome-wide association scan (GWAS) meta-analysis. We used fixed-effects meta-analysis to synthesise summary results across 14 GWAS discovery and 4 replication cohorts comprising overall 22,376 individuals (12,031 women and 10,345 men) of European ancestry. Individual analyses were carried out for men, women, and combined across sexes using linear regression and an additive genetic model: adjusted for age and adjusted for age and BMI. We prioritised signals for follow-up in two-stages. We did not detect any signals reaching genome-wide significance. The FTO rs9939609 SNP showed nominal evidence for association (p<0.05) in the age-adjusted strata for men and across both sexes. In this first GWAS meta-analysis for BC to date, we have not identified any genome-wide significant signals and do not observe robust association of previously established obesity loci with BC. Large-scale collaborations will be necessary to achieve higher power to detect loci underlying BC.

Boraska, Vesna; Day-Williams, Aaron; Franklin, Christopher S.; Elliott, Katherine S.; Panoutsopoulou, Kalliope; Tachmazidou, Ioanna; Albrecht, Eva; Bandinelli, Stefania; Beilin, Lawrence J.; Bochud, Murielle; Cadby, Gemma; Ernst, Florian; Evans, David M.; Hayward, Caroline; Hicks, Andrew A.; Huffman, Jennifer; Huth, Cornelia; James, Alan L.; Klopp, Norman; Kolcic, Ivana; Kutalik, Zoltan; Lawlor, Debbie A.; Musk, Arthur W.; Pehlic, Marina; Pennell, Craig E.; Perry, John R. B.; Peters, Annette; Polasek, Ozren; Pourcain, Beate St; Ring, Susan M.; Salvi, Erika; Schipf, Sabine; Staessen, Jan A.; Teumer, Alexander; Timpson, Nicholas; Vitart, Veronique; Warrington, Nicole M.; Yaghootkar, Hanieh; Zemunik, Tatijana; Zgaga, Lina; An, Ping; Anttila, Verneri; Borecki, Ingrid B.; Holmen, Jostein; Ntalla, Ioanna; Palotie, Aarno; Pietilainen, Kirsi H.; Wedenoja, Juho; Winsvold, Bendik S.; Dedoussis, George V.; Kaprio, Jaakko; Province, Michael A.; Zwart, John-Anker; Burnier, Michel; Campbell, Harry; Cusi, Daniele; Davey Smith, George; Frayling, Timothy M.; Gieger, Christian; Palmer, Lyle J.; Pramstaller, Peter P.; Rudan, Igor; Volzke, Henry; Wichmann, H. -Erich; Wright, Alan F.; Zeggini, Eleftheria

2012-01-01

70

The Effects of Small Sample Size on Identifying Polytomous DIF Using the Liu-Agresti Estimator of the Cumulative Common Odds Ratio  

ERIC Educational Resources Information Center

|This study is an evaluation of the behavior of the Liu-Agresti estimator of the cumulative common odds ratio when identifying differential item functioning (DIF) with polytomously scored test items using small samples. The Liu-Agresti estimator has been proposed by Penfield and Algina as a promising approach for the study of polytomous DIF but no…

Carvajal, Jorge; Skorupski, William P.

2010-01-01

71

The Effects of Small Sample Size on Identifying Polytomous DIF Using the Liu-Agresti Estimator of the Cumulative Common Odds Ratio  

ERIC Educational Resources Information Center

This study is an evaluation of the behavior of the Liu-Agresti estimator of the cumulative common odds ratio when identifying differential item functioning (DIF) with polytomously scored test items using small samples. The Liu-Agresti estimator has been proposed by Penfield and Algina as a promising approach for the study of polytomous DIF but no…

Carvajal, Jorge; Skorupski, William P.

2010-01-01

72

Glutamine Sensitivity Analysis Identifies the xCT Antiporter as a Common Triple-Negative Breast Tumor Therapeutic Target.  

PubMed

A handful of tumor-derived cell lines form the mainstay of cancer therapeutic development, yielding drugs with an impact typically measured as months to disease progression. To develop more effective breast cancer therapeutics and more readily understand their clinical impact, we constructed a functional metabolic portrait of 46 independently derived breast cell lines. Our analysis of glutamine uptake and dependence identified a subset of triple-negative samples that are glutamine auxotrophs. Ambient glutamine indirectly supports environmental cystine acquisition via the xCT antiporter, which is expressed on one-third of triple-negative tumors in vivo. xCT inhibition with the clinically approved anti-inflammatory sulfasalazine decreases tumor growth, revealing a therapeutic target in breast tumors of poorest prognosis and a lead compound for rapid, effective drug development. PMID:24094812

Timmerman, Luika A; Holton, Thomas; Yuneva, Mariia; Louie, Raymond J; Padró, Mercè; Daemen, Anneleen; Hu, Min; Chan, Denise A; Ethier, Stephen P; van 't Veer, Laura J; Polyak, Kornelia; McCormick, Frank; Gray, Joe W

2013-10-03

73

Research on college reading programs and student retention efforts  

Microsoft Academic Search

This study examines research in retention and in college reading in order to clarify the role of college reading programs in student retention efforts. Problems in retention research are identified which complicate a clear?cut involvement of reading instruction in student retention efforts. Three categories of reading research are reviewed which seem to bear on student retention: 1) reading measures as

Charles E. Heerman

1983-01-01

74

AN ORIENTATION COURSE AND COMMUNITY COLLEGE RETENTION  

Microsoft Academic Search

Orientation and retention programs are common in institutions of higher education. The potential association between orientation programs and student retention, particularly within the community college sector, has long been neglected. This study presents an institutional view of a potential associative relationship between an orientation course and student retention measures. A chi-square analysis revealed a significant association among orientation program, student

Dustin C. Derby; Thomas Smith

2004-01-01

75

Sacral neuromodulation for urinary retention  

Microsoft Academic Search

Urinary retention without an identifiable urological cause presents a diagnostic and therapeutic challenge. Patients with nonobstructive chronic urinary retention usually have to rely on intermittent self-catheterization or indwelling suprapubic or transurethral catheters, which significantly affect quality of life. For some patients, however, sacral neuromodulation (SNM) offers an effective therapeutic alternative, and women with primary disorder of urethral sphincter relaxation (Fowler's

Clare J Fowler; Thomas M Kessler

2008-01-01

76

TM4SF10 gene sequencing in XLMR patients identifies common polymorphisms but no disease-associated mutation  

PubMed Central

Background The TM4SF10 gene encodes a putative four-transmembrane domains protein of unknown function termed Brain Cell Membrane Protein 1 (BCMP1), and is abundantly expressed in the brain. This gene is located on the short arm of human chromosome X at p21.1. The hypothesis that mutations in the TM4SF10 gene are associated with impaired brain function was investigated by sequencing the gene in individuals with hereditary X-linked mental retardation (XLMR). Methods The coding region (543 bp) of TM4SF10, including intronic junctions, and the long 3' untranslated region (3 233 bp), that has been conserved during evolution, were sequenced in 16 male XLMR patients from 14 unrelated families with definite, or suggestive, linkage to the TM4SF10 gene locus, and in 5 normal males. Results Five sequence changes were identified but none was found to be associated with the disease. Two of these changes correspond to previously known SNPs, while three other were novel SNPs in the TM4SF10 gene. Conclusion We have investigated the majority of the known MRX families linked to the TM4SF10 gene region. In the absence of mutations detected, our study indicates that alterations of TM4SF10 are not a frequent cause of XLMR.

Christophe-Hobertus, Christiane; Kooy, Frank; Gecz, Jozef; Abramowicz, Marc J; Holinski-Feder, Elke; Schwartz, Charles; Christophe, Daniel

2004-01-01

77

Principals Retention. Research Brief  

ERIC Educational Resources Information Center

Many districts are struggling with the problem of administrator retention. Hoffman (2004) identifies some of the reasons for this: (1) Increased accountability expectations; (2) Diminished or static levels of resources to support reform efforts; (3) Greater administrator vulnerability to sanctions; (4) The complex demands of government and the…

Muir, Mike

2005-01-01

78

Freshman Retention  

Microsoft Academic Search

Aggregate college data are used to help understand how college characteristics influence the decision for freshman to remain in school another year. Taking advantage of the aggregate data, we estimate a three-stage least squares model which takes retention, enrollment and SAT scores as all endogenous. Our results highlight interactions between the three endogenous variables which confirms our suspicion of the

John S. Heywood; Richard D. Marcus

1989-01-01

79

Key Principles of Community-Based Natural Resource Management: A Synthesis and Interpretation of Identified Effective Approaches for Managing the Commons  

Microsoft Academic Search

This article examines recent research on approaches to community-based environmental and natural resource management and reviews\\u000a the commonalities and differences between these interdisciplinary and multistakeholder initiatives. To identify the most effective\\u000a characteristics of Community-based natural resource management (CBNRM), I collected a multiplicity of perspectives from research\\u000a teams and then grouped findings into a matrix of organizational principles and key characteristics.

James S. Gruber

2010-01-01

80

College Counseling and Student Retention  

Microsoft Academic Search

Although it is commonly believed that college counseling positively affects student retention and further, that there are convincing data and evidence to support such a belief, an extensive literature search found no objective evidence at all on the relationship of a counseling center's conventional one-to-one counseling and therapy activities with short-term student retention. Two program evaluations which attempt to relate

Norman S Giddan; David M Levy; Ronald M Estroff; John C Cline; Erika B Altman; Karen A Isham; Steven J Weiss

1987-01-01

81

A repurposing approach identifies off-patent drugs with fungicidal cryptococcal activity, a common structural chemotype, and pharmacological properties relevant to the treatment of cryptococcosis.  

PubMed

New, more accessible therapies for cryptococcosis represent an unmet clinical need of global importance. We took a repurposing approach to identify previously developed drugs with fungicidal activity toward Cryptococcus neoformans, using a high-throughput screening assay designed to detect drugs that directly kill fungi. From a set of 1,120 off-patent medications and bioactive molecules, we identified 31 drugs/molecules with fungicidal activity, including 15 drugs for which direct antifungal activity had not previously been reported. A significant portion of the drugs are orally bioavailable and cross the blood-brain barrier, features key to the development of a widely applicable anticryptococcal agent. Structural analysis of this set revealed a common chemotype consisting of a hydrophobic moiety linked to a basic amine, features that are common to drugs that cross the blood-brain barrier and access the phagolysosome, two important niches of C. neoformans. Consistent with their fungicidal activity, the set contains eight drugs that are either additive or synergistic in combination with fluconazole. Importantly, we identified two drugs, amiodarone and thioridazine, with activity against intraphagocytic C. neoformans. Finally, the set of drugs is also enriched for molecules that inhibit calmodulin, and we have confirmed that seven drugs directly bind C. neoformans calmodulin, providing a molecular target that may contribute to the mechanism of antifungal activity. Taken together, these studies provide a foundation for the optimization of the antifungal properties of a set of pharmacologically attractive scaffolds for the development of novel anticryptococcal therapies. PMID:23243064

Butts, Arielle; DiDone, Louis; Koselny, Kristy; Baxter, Bonnie K; Chabrier-Rosello, Yeissa; Wellington, Melanie; Krysan, Damian J

2012-12-14

82

A Repurposing Approach Identifies Off-Patent Drugs with Fungicidal Cryptococcal Activity, a Common Structural Chemotype, and Pharmacological Properties Relevant to the Treatment of Cryptococcosis  

PubMed Central

New, more accessible therapies for cryptococcosis represent an unmet clinical need of global importance. We took a repurposing approach to identify previously developed drugs with fungicidal activity toward Cryptococcus neoformans, using a high-throughput screening assay designed to detect drugs that directly kill fungi. From a set of 1,120 off-patent medications and bioactive molecules, we identified 31 drugs/molecules with fungicidal activity, including 15 drugs for which direct antifungal activity had not previously been reported. A significant portion of the drugs are orally bioavailable and cross the blood-brain barrier, features key to the development of a widely applicable anticryptococcal agent. Structural analysis of this set revealed a common chemotype consisting of a hydrophobic moiety linked to a basic amine, features that are common to drugs that cross the blood-brain barrier and access the phagolysosome, two important niches of C. neoformans. Consistent with their fungicidal activity, the set contains eight drugs that are either additive or synergistic in combination with fluconazole. Importantly, we identified two drugs, amiodarone and thioridazine, with activity against intraphagocytic C. neoformans. Finally, the set of drugs is also enriched for molecules that inhibit calmodulin, and we have confirmed that seven drugs directly bind C. neoformans calmodulin, providing a molecular target that may contribute to the mechanism of antifungal activity. Taken together, these studies provide a foundation for the optimization of the antifungal properties of a set of pharmacologically attractive scaffolds for the development of novel anticryptococcal therapies.

Butts, Arielle; DiDone, Louis; Koselny, Kristy; Baxter, Bonnie K.; Chabrier-Rosello, Yeissa; Wellington, Melanie

2013-01-01

83

Substitution of Feline Leukemia Virus Long Terminal Repeat Sequences into Murine Leukemia Virus Alters the Pattern of Insertional Activation and Identifies New Common Insertion Sites  

Microsoft Academic Search

The recombinant retrovirus, MoFe2-MuLV (MoFe2), was constructed by replacing the U3 region of Moloney murine leukemia virus (M-MuLV) with homologous sequences from the FeLV-945 LTR. NIH\\/Swiss mice neonatally inoculated with MoFe2 developed T-cell lymphomas of immature thymocyte surface phenotype. MoFe2 integrated infrequently (0 to 9%) near common insertion sites (CISs) previously identified for either parent virus. Using three different strategies,

Chassidy Johnson; Patricia A. Lobelle-Rich; Adriane Puetter; Laura S. Levy

2005-01-01

84

Novel common copy number variation for early onset extreme obesity on chromosome 11q11 identified by a genome-wide analysis  

PubMed Central

Heritability of obesity is substantial and recent meta-analyses of genome-wide association studies (GWASs) have been successful in detecting several robustly associated genomic regions for obesity using single-nucleotide polymorphisms (SNPs). However, taken together, the SNPs explain only a small proportion of the overall heritability. Copy number variations (CNVs) might contribute to the ‘missing heritability’. We searched genome-wide for association between common CNVs and early-onset extreme obesity. Four hundred and twenty-four case-parents obesity trios and an independent sample of 453 extremely obese children and adolescents and 435 normal-weight and lean adult controls were genotyped by the Affymetrix Genome-Wide Human SNP Array 6.0. We detected 20 common copy number variable regions (CNVRs) which were associated with obesity. The most promising CNVRs were followed-up in an independent sample of 365 obesity trios, confirming the association for two candidate CNVRs. We identified a common CNVR exclusively covering the three olfactory receptor genes OR4P4, OR4S2 and OR4C6 to be associated with obesity (combined P-value = 0.015 in a total of 789 families; odds ratio for the obesity effect allele = 1.19; 95% confidence interval = 1.016–1.394). We also replicated two common deletions (near NEGR1 and at chromosome 10q11.22) that have previously been reported to be associated with body weight. Additionally, we support a rare CNV on chromosome 16 that has recently been reported by two independent groups. However, rare CNVs had not been the focus of our study. We conclude that common CNVs are unlikely to contribute substantially to the genetic basis of early-onset extreme obesity.

Jarick, Ivonne; Vogel, Carla I.G.; Scherag, Susann; Schafer, Helmut; Hebebrand, Johannes; Hinney, Anke; Scherag, Andre

2011-01-01

85

A community-driven approach to identifying "winnable" policies using the Centers for Disease Control and Prevention's Common Community Measures for Obesity Prevention.  

PubMed

Federally funded, community-based participatory research initiatives encourage the development and implementation of obesity prevention policies. In 2009, the Centers for Disease Control and Prevention (CDC) published the Common Community Measures for Obesity Prevention (COCOMO), which include recommended strategies and measures to guide communities in identifying and evaluating environmental and policy strategies to prevent obesity. Agreeing on "winnable" policy issues can be challenging for community members. We used CDC's COCOMO to structure in-depth interviews and group discussions with local stakeholders (ie, planners, town managers, and a local community advisory council) to stimulate interest in and identify health-promoting policies for local policy and planning agendas. We first asked stakeholders to rank the COCOMO recommendations according to feasibility and likelihood of success given community culture, infrastructure, extent of leadership support, and likely funding support. Rankings were used to identify the most and least "winnable" COCOMO policy strategies. We then used questions from the evidence-based Community Readiness Handbook to aid discussion with stakeholders on the facilitators and barriers to enacting the most and least winnable policy options identified. Finally, we discuss potential adaptations to COCOMO for rural jurisdictions. PMID:22482138

Jilcott, Stephanie B; Whetstone, Lauren M; Wilkerson, Jean R; Smith, Tosha W; Ammerman, Alice S

2012-01-01

86

Comparative genomic hybridization and loss of heterozygosity analyses identify a common region of deletion at 15q11.1-15 in human malignant mesothelioma.  

PubMed

Comparative genomic hybridization analysis was performed to identify chromosomal imbalances in 24 human malignant mesothelioma (MM) cell lines derived from untreated primary tumors. Chromosomal losses accounted for the majority of genomic imbalances. The most frequent underrepresented segments were 22q (58%) and 15q1.1-21 (54%); other recurrent sites of chromosomal loss included 1p12-22 (42%), 13q12-14 (42%), 14q24-qter (42%), 6q25-qter (38%), and 9p21 (38%). The most commonly overrepresented segment was 5p (54%). DNA sequence amplification at 3p12-13 was observed in two cases. Whereas some of the regions of copy number decreases (i.e., segments in 1p, 6q, 9p, and 22q) have previously been shown to be common sites of karyotypic and allelic loss in MM, our comparative genomic hybridization analyses identified a new recurrent site of chromosomal loss within 15q in this malignancy. To more precisely map the region of 15q deletion, loss of heterozygosity analyses were performed with a panel of polymorphic microsatellite markers distributed along 15q, which defined a minimal region of chromosomal loss at 15q11.1-15. The identification of frequent losses of a discrete segment in 15q suggests that this region harbors a putative tumor suppressor gene whose loss/inactivation may contribute to the pathogenesis of many MMs. PMID:9927061

Balsara, B R; Bell, D W; Sonoda, G; De Rienzo, A; du Manoir, S; Jhanwar, S C; Testa, J R

1999-01-15

87

Genome-wide Ancestry Association Testing Identifies a Common European Variant on 6q14.1 as a Risk Factor for Asthma in African Americans  

PubMed Central

Background Genetic variants that contribute to asthma susceptibility may be present at varying frequencies in different populations, which is an important consideration and advantage for performing genetic association studies in admixed populations. Objective To identify asthma-associated loci in African Americans. Methods We compared local African and European ancestry estimated from dense single nucleotide polymorphism (SNP) genotype data in African American adults with asthma and non-asthmatic controls. Allelic tests of association were performed within the candidate regions identified, correcting for local European admixture. Results We identified a significant ancestry association peak on chromosomes 6q. Allelic tests for association within this region identified a SNP (rs1361549) on 6q14.1 that was associated with asthma exclusively in African Americans with local European admixture (OR=2.2). The risk allele is common in Europe (42% in the HapMap CEU) but absent in West Africa (0% in the HapMap YRI), suggesting the allele is present in African Americans due to recent European admixture. We replicated our findings in Puerto Ricans and similarly found that the signal of association is largely specific to individuals who are heterozygous for African and non-African ancestry at 6q14.1. However, we found no evidence for association in European Americans or in Puerto Ricans in the absence of local African ancestry, suggesting that the association with asthma at rs1361549 is due to an environmental or genetic interaction. Conclusion We identified a novel asthma-associated locus that is relevant to admixed populations with African ancestry, and highlight the importance of considering local ancestry in genetic association studies of admixed populations.

Torgerson, Dara G.; Capurso, Daniel; Ampleford, Elizabeth J.; Li, Xingnan; Moore, Wendy C.; Gignoux, Christopher R.; Hu, Donglei; Eng, Celeste; Mathias, Rasika A.; Busse, William W.; Castro, Mario; Erzurum, Serpil C.; Fitzpatrick, Anne M.; Gaston, Benjamin; Israel, Elliot; Jarjour, Nizar N.; Teague, W. Gerald; Wenzel, Sally E.; Rodriguez-Santana, Jose R.; Rodriguez-Cintron, William; Avila, Pedro C.; Ford, Jean G.; Barnes, Kathleen C.; Burchard, Esteban G.; Howard, Timothy D.; Bleecker, Eugene R.; Meyers, Deborah A.; Cox, Nancy J.; Ober, Carole; Nicolae, Dan L.

2012-01-01

88

A Four-Year Longitudinal Study of the Sustained Effects of Promotion/Retention and Skill-Specific Intervention Relative to Identified Deficiencies on the Performance of Elementary Students.  

ERIC Educational Resources Information Center

|One of a series of studies examining Louisiana's compensatory education program, this study investigated four assumptions upon which a skill-specific intervention program was based. Framed as questions, these assumptions are: (1) Is retention effective for students who do not know basic content for a given grade level? (2) When is retention most…

Rachal, Janella; Hoffman, Lee McGraw

89

Polymerase chain reaction assay identifies Culex nigripalpus: part of an assay for molecular identification of the common Culex (Culex) mosquitoes of the eastern United States.  

PubMed

Nucleotide sequence information on internal transcribed spacer (ITS) 1 and ITS 2 regions of the nuclear ribosomal DNA multigene family was used to develop a polymerase chain reaction assay that identifies Culex nigripalpus Theobald. The assay uses species-specific forward and reverse primers for Cx. nigripalpus and can be used along with previously described primers to distinguish among 4 common taxa of Culex (Culex) of the eastern USA with a single thermal cycler program. The assay distinguishes among the 4 taxa Cx. nigripalpus, Cx. restuans Theobald, Cx. salinarius Coquillett, and members of the Cx. pipiens Linnaeus complex. This assay may be used to verify the morphological identification of individual specimens of Culex or to confirm the species composition of mosquito pools. PMID:12825660

Aspen, Stephen; Crabtree, Mary B; Savage, Harry M

2003-06-01

90

From flower to seed: identifying phenological markers and reliable growth functions to model reproductive development in the common bean (Phaseolus vulgaris L.).  

PubMed

The lack of dependable morphological indicators for the onset and end of seed growth has hindered modeling work in the common bean (Phaseolus vulgaris?L.). We have addressed this problem through the use of mathematical growth functions to analyse and identify critical developmental stages, which can be linked to existing developmental indices. We performed this study under greenhouse conditions with an Andean and a Mesoamerican genotype of contrasting pod and seed phenotypes, and three selected recombinant inbred lines. Pods from tagged flowers were harvested at regular time intervals for various measurements. Differences in flower production and seed and pod growth trajectories among genotypes were detected via comparisons of parameters of fitted growth functions. Regardless of the genotype, the end of pod elongation marked the beginning of seed growth, which lasted until pods displayed a sharp decline in color, or pod hue angle. These results suggest that the end of pod elongation and the onset of color change are reliable indicators of important developmental transitions in the seed, even for widely differing pod phenotypes. We also provide a set of equations that can be used to model different aspects of reproductive growth and development in the common bean. PMID:23586628

Clavijo Michelangeli, Jose A; Bhakta, Mehul; Gezan, Salvador A; Boote, Kenneth J; Vallejos, C Eduardo

2013-05-12

91

The genes encoding the peripheral cannabinoid receptor and alpha-L-fucosidase are located near a newly identified common virus integration site, Evi11.  

PubMed Central

A new common region of virus integration, Evi11, has been identified in two retrovirally induced murine myeloid leukemia cell lines, NFS107 and NFS78. By interspecific backcross analysis, it was shown that Evi11 is located at the distal end of mouse chromosome 4, in a region that shows homology with human 1p36. The genes encoding the peripheral cannabinoid receptor (Cnr2) and alpha-L-fucosidase (Fuca1) were identified near the integration site by using a novel exon trapping system. Cnr2 is suggested to be the target gene for viral interference in Evi11, since proviruses are integrated in the first intron of Cnr2 and retroviral integrations alter mRNA expression of Cnr2 in NFS107 and NFS78. In addition, proviral integrations were demonstrated within the 3' untranslated region of Cnr2 in five independent newly derived CasBrM-MuLV (mouse murine leukemia virus) tumors, CSL13, CSL14, CSL16, CSL27, and CSL97. The Cnr2 gene encodes a seven-transmembrane G-protein-coupled receptor which is normally expressed in hematopoietic tissues. Our data suggest that the peripheral cannabinoid receptor gene might be involved in leukemogenesis as a result of aberrant expression of Cnr2 due to retroviral integration in Evi11.

Valk, P J; Hol, S; Vankan, Y; Ihle, J N; Askew, D; Jenkins, N A; Gilbert, D J; Copeland, N G; de Both, N J; Lowenberg, B; Delwel, R

1997-01-01

92

Player performance and in game advertising retention  

Microsoft Academic Search

In game advertising or IGA is an increasingly common means of promoting brands and products. This study seeks to understand the effectiveness of in game advertising by understanding player retention of brand messages. The researchers created a controlled environment and 3D car racing game, embedding in game advertising and measuring player performance and advertising retention. The study produces a highly

Lindsay D. Grace; James Coyle

2011-01-01

93

Grade Retention: What are the Costs and Benefits?  

ERIC Educational Resources Information Center

|Grade retention is a common practice used when students fail to meet required benchmarks. Therefore, it is important that we understand the relative benefits and costs associated with students repeating a grade. In this article we analyze the costs and benefits of grade retention. In our examination of retention, we obtain our calculations of the…

Eide, Eric R.; Goldhaber, Dan D.

2005-01-01

94

Strategies in identifying individuals in a segregant population of common bean and implications of genotype x environment interaction in the success of selection.  

PubMed

The objective of this study was to compare the BLUP selection method with different selection strategies in F(2:4) and assess the efficiency of this method on the early choice of the best common bean (Phaseolus vulgaris) lines. Fifty-one F(2:4) progenies were produced from a cross between the CVIII8511 x RP-26 lines. A randomized block design was used with 20 replications and one-plant field plots. Character data on plant architecture and grain yield were obtained and then the sum of the standardized variables was estimated for simultaneous selection of both traits. Analysis was carried out by mixed models (BLUP) and the least squares method to compare different selection strategies, like mass selection, stratified mass selection and between and within progeny selection. The progenies selected by BLUP were assessed in advanced generations, always selecting the greatest and smallest sum of the standardized variables. Analyses by the least squares method and BLUP procedure ranked the progenies in the same way. The coincidence of the individuals identified by BLUP and between and within progeny selection was high and of the greatest magnitude when BLUP was compared with mass selection. Although BLUP is the best estimator of genotypic value, its efficiency in the response to long term selection is not different from any of the other methods, because it is also unable to predict the future effect of the progenies x environments interaction. It was inferred that selection success will always depend on the most accurate possible progeny assessment and using alternatives to reduce the progenies x environments interaction effect. PMID:22576915

Mendes, M P; Ramalho, M A P; Abreu, A F B

2012-04-10

95

Student retention: Moving from numbers to action  

Microsoft Academic Search

We describe a multifaceted approach to providing information to improve student retention at an urban public university. Many students at this institution are older, working people; few live on campus and participate in “traditional” student experiences. A Retention Task Force, using qualitative as well as quantitative methods, identified problems that were barriers to student success or that contributed to student

Mary K. Kinnick; Mary F. Ricks

1993-01-01

96

Typewriting: Retention and Relearning.  

National Technical Information Service (NTIS)

Retention and relearning of straight-copy typewriting skill among 38 Administrative Specialists, 71L Military Occupational Specialty, were examined after the no-practice retention interval between Advanced Individual Training (AIT) graduation and unit dut...

J. D. Hagman

1979-01-01

97

Neckband retention for lesser snow geese in the western Arctic  

USGS Publications Warehouse

Neckbands are commonly used in waterfowl studies (especially geese) to identify individuals for determination of movement and behavior and to estimate population parameters. Substantial neckband loss can adversely affect these research objectives and produce biased survival estimates. We used capture, recovery, and observation histories for lesser snow geese (Chen caerulescens caerulescens) banded in the western Arctic, 1993-1996, to estimate neckband retention. We found that neckband retention differed between snow goose breeding colonies at Wrangel Island, Russia, and Banks Island, Northwest Territories, Canada. Male snow geese had higher neckband loss than females, a pattern similar to that found for Canada geese (Branta canadensis) and lesser snow geese in Alaska. We found that the rate of neckband loss increased with time, suggesting that neckbands are lost as the plastic deteriorates. Survival estimates for geese based on resighting neckbands will be biased unless estimates are corrected for neckband loss. We recommend that neckband loss be estimated using survival estimators that incorporate recaptures, recoveries, and observations of marked birds. Research and management studies using neckbands should be designed to improve neckband retention and to include the assessment of neckband retention.

Samuel, M. D.; Goldberg, D. R.; Smith, A. E.; Baranyuk, W.; Cooch, E. G.

2001-01-01

98

Prediction of Peptide Retention Times in High-Pressure Liquid Chromatography on the Basis of Amino Acid Composition  

Microsoft Academic Search

Analysis of peptides by reverse-phase high-pressure liquid chromatography would be simplified if retention times could be predicted by summing the contribution to retention of each of the peptide's amino acid side chains. This paper describes the derivation of values (``retention coefficients'') that represent the contribution to retention of each of the common amino acids and end groups. Peptide retention times

James L. Meek

1980-01-01

99

Establishment of reliable mass spectra and retention indices library: Identification of fatty acids in human plasma without authentic standards  

Microsoft Academic Search

Gas chromatography mass spectrometry (GC–MS) is routinely employed to analyze small molecules in various samples. The more challenge of GC–MS processing is to identify the unknown compounds in samples. Mass spectra and retention indices library searching are commonly used method. However, the current libraries are often built through collecting data from different groups. To unknown compounds with similar mass spectra

Liangxiao Zhang; Binbin Tan; Maomao Zeng; Hongmei Lu; Yizeng Liang

100

MONOGRAPH - Recruitment & Retention of Engineering Technology Students  

NSDL National Science Digital Library

Identifying strategies to assist with recruitment and retention of engineering technology students particularly women and minorities was the focus of a 1998 Retention Forum, held in Columbia, SC, and sponsored by the South Carolina Advanced Technological Education (SC ATE) Center of Excellence. The Center is funded by the National Science Foundation and the South Carolina State Board for Technical and Comprehensive Education. Approximately 90 Retention Forum participants discussed results from research on enrollment and retention of engineering technology (ET) students in South Carolinas technical college system. The SC ATE Center of Excellence commissioned the research report, Determinants of Enrollment and Retention in South Carolina Engineering Technology Programs, by Dr. W. Douglas Evans. Forum participants also heard a report on what SC technical colleges are doing well to recruit and retain women and minorities in ET fields. During the forum, a panel of women and minority ET students from South Carolina technical colleges shared their perspectives and experiences. In conclusion, participants met in focus groups to discuss new ways of enhancing recruitment and retention of engineering technology students. These research activities reveal some significant findings, which are being used to develop new retention strategies. In addition to an in-depth examination of opinions and attitudes of first- and second-year engineering technology students and engineering technology faculty and administrators, the research takes a closer look at recruitment and retention of women and minority students. The various components of this research activity by the SC ATE Center of Excellence are presented in this monograph.

Craft, Elaine; Wood, James C.; Mack, Lynn G.

2009-07-17

101

Genome-Wide Association Identifies a Common Variant in the Reelin Gene That Increases the Risk of Schizophrenia Only in Women  

Microsoft Academic Search

Sex differences in schizophrenia are well known, but their genetic basis has not been identified. We performed a genome-wide association scan for schizophrenia in an Ashkenazi Jewish population using DNA pooling. We found a female-specific association with rs7341475, a SNP in the fourth intron of the reelin (RELN) gene (p = 2.9 × 10?5 in women), with a significant gene-sex

Sagiv Shifman; Martina Johannesson; Michal Bronstein; Sam X Chen; David A Collier; Nicholas J Craddock; Kenneth S Kendler; Tao Li; Michael ODonovan; F. Anthony ONeill; Michael J Owen; Dermot Walsh; Daniel R Weinberger; Cuie Sun; Jonathan Flint; Ariel Darvasi

2008-01-01

102

Genome-wide scan on total serum IgE levels identifies no common variants in a healthy Chinese male population.  

PubMed

Immunoglobulin E (IgE) provides important information on the humoral immune status, and the IgE level is routinely detected in clinical practice. There are many diseases associated with IgE, such as atopic disease, autoimmune diseases, and so on. IgE is a genetically complex trait, but comprehensive genetic assessment of the variability in serum IgE levels is lacking. Previous genome-wide association studies (GWAS) on total serum IgE levels have identified FCER1A as the susceptibility locus; however, the candidate gene association study in southern Chinese patients reported no association. Given the genetic difference in different populations, we firstly conducted this two-stage GWAS in a Chinese population of 3,495 men, including 1,999 unrelated subjects in the first stage and 1,496 independent individuals replicated in the second stage. In the first stage, we totally identified three single nucleotide polymorphisms (SNPs) which reached a P value of 1.0 × 10??. Rs17090302 on chromosome 3 and Rs28708846 on chromosome 13 are intergenic. Rs432085 from chromosome 3p28 is located in the gene CCDC50. When the two-stage data was combined, none of the SNPs reached the genome-wide significant level. Collectively, we did not identify novel loci associated with the serum IgE level in Chinese males, but we hypothesized that CCDC50 was a candidate gene in regulation on IgE level. PMID:23661040

Liao, Ming; Shi, Dianchun; Wang, Yao; Zhang, Kai; Chen, Xin; Gao, Yong; Tan, Aihua; Xuan, Qiang; Yang, Xiaobo; Hu, Yanlin; Qin, Xue; Zhang, Haiying; Mo, Zengnan

2013-05-10

103

An SNP-guided microRNA map of fifteen common human disorders identifies a consensus disease phenocode aiming at principal components of the nuclear import pathway.  

PubMed

Recent large-scale genome-wide association (GWA) studies of SNP variations captured many thousands individual genetic profiles of H. sapiens and facilitated identification of significant genetic traits which are highly likely to influence the pathogenesis of several major human diseases. Here we apply the integrative genomics principles to interrogate relationships between structural features and gene expression patterns of disease-linked SNPs, microRNAs and mRNAs of protein-coding genes in association to phenotypes of 15 major human disorders, namely bipolar disease (BD); rheumatoid arthritis (RA); coronary artery disease (CAD); Crohn's disease (CD); type 1 diabetes (T1D); type 2 diabetes (T2D); hypertension (HT); ankylosing spondylitis (AS); Graves' disease (autoimmune thyroid disease; AITD); multiple sclerosis (MS); breast cancer (BC); prostate cancer (PC); systemic lupus erythematosus (SLE); vitiligo-associated multiple autoimmune disease (VIT); and ulcerative colitis (UC). We selected for sequence homology profiling a set of approximately 250 SNPs which were unequivocally associated with common human disorders based on multiple independent studies of 220,124 individual samples comprising 85,077 disease cases and 129,506 controls. Our analysis reveals a systematic primary sequence homology/complementarity-driven pattern of associations between disease-linked SNPs, microRNAs and protein-coding mRNAs defined here as a human disease phenocode. We utilize this approach to draw SNP-guided microRNA maps of major human diseases and define a consensus disease phenocode for fifteen major human disorders. A consensus disease phenocode comprises 72 SNPs and 18 microRNAs with an apparent propensity to target mRNA sequences derived from a single protein-coding gene, KPNA1. Each of microRNAs in this elite set appears linked to at least three common human diseases and has potential protein-coding mRNA targets among the principal components of the nuclear import pathway. We confirmed the validity of our findings by analyzing independent sets of most significant disease-linked SNPs and demonstrating statistically significant KPNA1-gene expression phenotypes associated with human genotypes of CD, BD, T2D and RA populations. Our analysis supports the idea that variations in DNA sequences associated with multiple human diseases may affect phenotypes in trans via non-protein-coding RNA intermediaries interfering with functions of microRNAs and defines the nuclear import pathway as a potential major target in 15 common human disorders. PMID:18719369

Glinsky, Gennadi V

2008-08-30

104

Genome-wide association study identifies common variants in SLC39A6 associated with length of survival in esophageal squamous-cell carcinoma.  

PubMed

We conducted a genome-wide scan of SNPs to identify variants associated with length of survival in 1,331 individuals with esophageal squamous-cell carcinoma (ESCC), with associations validated in 2 independent sets including 1,962 individuals with this cancer. We identified rs1050631 in SLC39A6 as associated with the survival times of affected individuals, with the hazard ratio for death from ESCC in the combined sample being 1.30 (95% confidence interval (CI) = 1.19-1.43; P = 3.77 × 10(-8)). rs7242481, located in the 5' UTR of SLC39A6, disturbs a transcriptional repressor binding site and results in upregulation of SLC39A6 expression. Immunohistochemical staining of ESCC tissues showed that higher expression of SLC39A6 protein was correlated with shorter length of survival in individuals with advanced ESCC (P = 0.013). Knockdown of SLC39A6 expression suppressed proliferation and invasion in ESCC cells. These results suggest that SLC39A6 has an important role in the prognosis of ESCC and may be a potential therapeutic target. PMID:23644492

Wu, Chen; Li, Dong; Jia, Weihua; Hu, Zhibin; Zhou, Yifeng; Yu, Dianke; Tong, Tong; Wang, Mingrong; Lin, Dongmei; Qiao, Yan; Zhou, Yuling; Chang, Jiang; Zhai, Kan; Wang, Menghan; Wei, Lixuan; Tan, Wen; Shen, Hongbing; Zeng, Yixin; Lin, Dongxin

2013-05-05

105

Comments on 'Is partial coherence a viable technique for identifying generators of neural oscillations?': Why the term 'Gersch Causality' is inappropriate: common neural structure inference pitfalls.  

PubMed

To aid prospective neural connectivity inference analysts and hoping to preclude misconception spread, we exploit the didatic value of some of the issues raised by Albo et al. (Biol Cybern 90: 318-326, 2004) who claim that signal-to-noise ratio (SNR) values can lead to mistakes in structural inference when using partial coherence in connection to Gersch's 1970 method for spotting signal sources (Gersch in Math Biosci 14: 177- 196, 1972). We show theoretically that Gersch's method is able only to spot which measurement of some common underlying factor has the least amount of additive noise and that this has nothing to do with any reasonable notion of 'causality' as suggested by Albo et al. (Biol Cybern 90: 318-326, 2004). We also show that despite the inherent structural ambiguity of the model used by Albo et al. (Biol Cybern 90: 318-326, 2004) to back their claim, its data can nonetheless furnish the correct time precedence hierarchy between the activities in its measured structures, both when simple (correlation) and more sophisticated methods are used (partial directed coherence) (Baccala and Sameshima in Biol Cybern 84:463-474, 2001a) in a true depiction of time series causality. PMID:16715246

Baccalá, Luiz A; Sameshima, Koichi

2006-05-20

106

Neurogenic urinary retention  

Microsoft Academic Search

This review article on neurogenic urinary retention is divided into three main sections. The first covers the neuroanatomy of the bladder and urethral sphincters, developing the peripheral innervation as well as the spinal cord organization and the cortical and subcortical brain control of micturition. The second discusses the main central and peripheral neurological lesions and diseases causing urinary retention. The

A. G. Herbaut

1993-01-01

107

Fuel retention in tokamaks  

Microsoft Academic Search

Tritium retention constitutes an outstanding problem for ITER operation and future fusion reactors, particularly for the choice of the first wall materials. In present day tokamaks, fuel retention is evaluated by two complementary methods. The in situ gas balance allows evaluation of how much fuel is retained during a discharge and, typically, up to one day of experiments. Post-mortem analysis

T. Loarer

2009-01-01

108

Wrestling with Retention.  

ERIC Educational Resources Information Center

|In Long Beach, California, a courageous, communitywide conversation devised a new approach to enforcing K-8 promotion standards. Retention programs will not be a repeat of services, but offer retained children a significantly different academic experience. Retention criteria will comprise multiple measures, based on proficiency with content…

DeVries, Karen E.; Cohn, Carla A.

1998-01-01

109

Systematic Analysis of RNAi Reports Identifies Dismal Commonality at Gene-Level and Reveals an Unprecedented Enrichment in Pooled shRNA Screens.  

PubMed

RNA interference (RNAi) has opened promising avenues to better understand gene function. Though many RNAi screens report on the identification of genes, very few, if any, have been further studied and validated. Data discrepancy is emerging as one of RNAi main pitfalls. We reasoned that a systematic analysis of lethality-based screens, since they score for cell death, would examine the extent of hit discordance at inter-screen level. To this end, we developed a methodology for literature mining and overlap analysis of several screens using both siRNA and shRNA flavors, and obtained 64 gene lists censoring an initial list of 7,430 nominated genes. We further performed a comparative analysis first at a global level followed by hit re-assessment under much more stringent conditions. To our surprise, none of the hits overlapped across the board even for PLK1, which emerged as a strong candidate in siRNA screens; but only marginally in the shRNA ones. Furthermore, EIF5B emerges as the most common hit only in the shRNA screens. A highly unusual and unprecedented result was the observation that 5,269 out of 6,664 nominated genes (~80%) in the shRNA screens were exclusive to the pooled format, raising concerns as to the merits of pooled screens which qualify hits based on relative depletions, possibly due to multiple integrations per cell, data deconvolution or inaccuracies in intracellular processing causing off-target effects. Without golden standards in place, we would encourage the community to pay more attention to RNAi screening data analysis practices, bearing in mind that it is combinatorial in nature and one active siRNA duplex or shRNA hairpin per gene does not suffice credible hit nomination. Finally, we also would like to caution interpretation of pooled shRNA screening outcomes. PMID:23848309

Bhinder, Bhavneet; Djaballah, Hakim

2013-11-01

110

Molecular and Genetic Analyses of Four Nonfunctional S Haplotype Variants Derived from a Common Ancestral S Haplotype Identified in Sour Cherry (Prunus cerasus L.)  

PubMed Central

Tetraploid sour cherry (Prunus cerasus) has an S-RNase-based gametophytic self-incompatibility (GSI) system; however, individuals can be either self-incompatible (SI) or self-compatible (SC). Unlike the situation in the Solanaceae, where self-compatibility accompanying polyploidization is often due to the compatibility of heteroallelic pollen, the genotype-dependent loss of SI in sour cherry is due to the compatibility of pollen containing two nonfunctional S haplotypes. Sour cherry individuals with the S4S6S36aS36b genotype are predicted to be SC, as only pollen containing both nonfunctional S36a and S36b haplotypes would be SC. However, we previously found that individuals of this genotype were SI. Here we describe four nonfunctional S36 variants. Our molecular analyses identified a mutation that would confer loss of stylar S function for one of the variants, and two alterations that might cause loss of pollen S function for all four variants. Genetic crosses showed that individuals possessing two nonfunctional S36 haplotypes and two functional S haplotypes have reduced self-fertilization due to a very low frequency of transmission of the one pollen type that would be SC. Our finding that the underlying mechanism limiting successful transmission of genetically compatible gametes does not involve GSI is consistent with our previous genetic model for Prunus in which heteroallelic pollen is incompatible. This provides a unique case in which breakdown of SI does not occur despite the potential to generate SC pollen genotypes.

Tsukamoto, Tatsuya; Hauck, Nathanael R.; Tao, Ryutaro; Jiang, Ning; Iezzoni, Amy F.

2010-01-01

111

Diagnostic screening identifies a wide range of mutations involving the SHOX gene, including a common 47.5?kb deletion 160?kb downstream with a variable phenotypic effect.  

PubMed

Léri-Weill dyschondrosteosis (LWD) results from heterozygous mutations of the SHOX gene, with homozygosity or compound heterozygosity resulting in the more severe form, Langer mesomelic dysplasia (LMD). These mutations typically take the form of whole or partial gene deletions, point mutations within the coding sequence, or large (>100?kb) 3' deletions of downstream regulatory elements. We have analyzed the coding sequence of the SHOX gene and its downstream regulatory regions in a cohort of 377 individuals referred with symptoms of LWD, LMD or short stature. A causative mutation was identified in 68% of the probands with LWD or LMD (91/134). In addition, a 47.5?kb deletion was found 160?kb downstream of the SHOX gene in 17 of the 377 patients (12% of the LWD referrals, 4.5% of all referrals). In 14 of these 17 patients, this was the only potentially causative abnormality detected (13 had symptoms consistent with LWD and one had short stature only), but the other three 47.5?kb deletions were found in patients with an additional causative SHOX mutation (with symptoms of LWD rather than LMD). Parental samples were available on 14/17 of these families, and analysis of these showed a more variable phenotype ranging from apparently unaffected to LWD. Breakpoint sequence analysis has shown that the 47.5?kb deletion is identical in all 17 patients, most likely due to an ancient founder mutation rather than recurrence. This deletion was not seen in 471 normal controls (P<0.0001), providing further evidence for a phenotypic effect, albeit one with variable penetration. PMID:23636926

Bunyan, David J; Baker, Kevin R; Harvey, John F; Thomas, N Simon

2013-05-01

112

Acute urinary retention among astronauts.  

PubMed

Although acute urinary retention (AUR) is not commonly thought of as a life-threatening condition, its presentation in orbit can lead to a number of medical complications that could compromise a space mission. We report on a middle-aged astronaut who developed urinary retention during two spaceflights. On the first mission of note, the astronaut initially took standard doses of promethazine and scopolamine before launch, and developed AUR immediately after entering orbit. For the first 3 d, the astronaut underwent intermittent catheterizations with a single balloon-tipped catheter. Due to the lack of iodine solution on board and the need for the astronaut to complete certain duties without interruption, the catheter was left in place for a total of 4 d. Although the ability to void returned after day 7, a bout of AUR reemerged on day 10, 1 d before landing. On return to Earth, a cystometrogram was unremarkable. During the astronaut's next mission, AUR again recurred for the first 24 h of microgravity exposure, and the astronaut was subsequently able to void spontaneously while in space. This report details the presentation of this astronaut, the precautions that were taken for space travel subsequent to the initial episode of AUR, and the possible reasons why space travel can predispose astronauts to urinary retention while in orbit. The four major causes of AUR--obstructive, pharmacologic, psychogenic, and neurogenic-are discussed, with an emphasis on how these may have played a role in this case. PMID:17511293

Stepaniak, Philip C; Ramchandani, Suneil R; Jones, Jeffrey A

2007-04-01

113

Student Retention in Athletic Training Education Programs  

PubMed Central

Context: The success of any academic program, including athletic training, depends upon attracting and keeping quality students. The nature of persistent students versus students who prematurely leave the athletic training major is not known. Understanding the profiles of athletic training students who persist or leave is important. Objective: To (1) explore the relationships among the following variables: anticipatory factors, academic integration, clinical integration, social integration, and motivation; (2) determine which of the aforementioned variables discriminate between senior athletic training students and major changers; and (3) identify which variable is the strongest predictor of persistence in athletic training education programs. Design: Descriptive study using a qualitative and quantitative mixed-methods approach. Setting: Thirteen athletic training education programs located in District 3 of the National Athletic Trainers' Association. Patients or Other Participants: Ninety-four senior-level athletic training students and 31 college students who changed majors from athletic training to another degree option. Data Collection: Data were collected with the Athletic Training Education Program Student Retention Questionnaire (ATEPSRQ). Analysis: Data from the ATEPSRQ were analyzed via Pearson correlations, multivariate analysis of variance, univariate analysis of variance, and a stepwise discriminant analysis. Open-ended questions were transcribed and analyzed using open, axial, and selective coding procedures. Member checks and peer debriefing techniques ensured trustworthiness of the study. Results: Pearson correlations identified moderate relationships among motivation and clinical integration (r ?=? 0.515, P < .01) and motivation and academic integration (r ?=? 0.509, P < .01). Univariate analyses of variance showed that academic integration (F1,122 ?=? 8.483, P < .004), clinical integration (F1,119 ?=? 30.214, P < .001), and motivation (F1,121 ?=? 68.887, P < .001) discriminated between seniors and major changers. Discriminant analysis indicated that motivation was the strongest predictor of persistence in athletic training education, accounting for 37.2% of the variance between groups. The theoretic model accurately classified 95.7% of the seniors and 53.8% of the major changers. A common theme emerging from the qualitative data was the presence of a strong peer-support group that surrounded many of the senior-level students. Conclusions: Understanding student retention in athletic training is important for our profession. Results from this study suggest 3 key factors associated with student persistence in athletic training education programs: (1) student motivation, (2) clinical and academic integration, and (3) the presence of a peer-support system. Educators and program directors must create comprehensive recruitment and retention strategies that address factors influencing students' decisions to stay in the athletic training profession.

Dodge, Thomas M; Mitchell, Murray F; Mensch, James M

2009-01-01

114

Gas chromatographic retention of 180 polybrominated diphenyl ethers and prediction of relative retention under various operational conditions  

Microsoft Academic Search

The gas chromatographic (GC) retention times of 180 polybrominated diphenyl ethers (PBDEs) were obtained under different operational conditions on two types of commonly used capillary columns, Restek Rtx-1614 and J&W DB-5MS, of different dimensions. The relative retention times (RRTs) for PBDEs were calculated by normalizing the retention times of individual congeners to the sum of those of BDEs 47 and

Hua Wei; Ruiqiang Yang; An Li; Erik R. Christensen; Karl J. Rockne

2010-01-01

115

Drug Retention Times  

SciTech Connect

The purpose of this monograph is to provide information on drug retention times in the human body. The information provided is based on plausible illegal drug use activities that might be engaged in by a recreational drug user.

Center for Human Reliability Studies

2007-05-01

116

Drug Retention Times  

SciTech Connect

The purpose of this monograph is to provide information on drug retention times in the human body. The information provided is based on plausible illegal drug use activities that might be engaged in by a recreational drug user

Center for Human Reliability Studies

2007-05-01

117

Retention of Leaves by Deciduous Trees  

Microsoft Academic Search

THE retention of leaves by beechen hedges referred to by your correspondent in NATURE, April 10, is by no means confined to those on elevated ground. It may commonly be observed in hedges of this tree whatever their situation. In Northumberland the beech is not infrequently used as a hedge, and always retains its leaves throughout the winter. Young beech

G. W. Bulman

1902-01-01

118

Measuring safety climate: identifying the common features  

Microsoft Academic Search

In UK industry, particularly in the energy sector, there has been a movement away from ‘lagging’ measures of safety based on retrospective data, such as lost time accidents and incidents, towards ‘leading’ or predictive assessments of the safety climate of the organisation or worksite. A number of different instruments have been developed by industrial psychologists for this purpose, resulting in

R. Flin; K. Mearns; P. O'Connor; R. Bryden

2000-01-01

119

Quantification of uncertainty in modelled partitioning and removal of heavy metals (Cu, Zn) in a stormwater retention pond and a biofilter  

Microsoft Academic Search

Strategies for reduction of micropollutant (MP) discharges from stormwater drainage systems require accurate estimation of the potential MP removal in stormwater treatment systems. However, the high uncertainty commonly affecting stormwater runoff quality modelling also influences stormwater treatment models. This study identified the major sources of uncertainty when estimating the removal of copper and zinc in a retention pond and a

L. Vezzaro; E. Eriksson; A. Ledin; P. S. Mikkelsen

120

Surface retention capacity calculation  

NASA Astrophysics Data System (ADS)

Flood wave transformation in the floodplain is the phenomenon which is researched within interdisciplinary project NIVA - Water Retention in Floodplains and Possibilities of Retention Capacity Increase. The project focuses on broad range of floodplain ecosystem services and mitigation of flooding is one of them. Despite main influence on flood wave transformation is due to flow retardation, retention in surface depressions within floodplain has been analyzed to get better overview of whole transformation process. Detail digital relief model (DRM) has been used for given purposes to be able to analyze terrain depressions volumes. The model was developed with use of stereophotogrammetric evaluation of airborne images with high resolution of 10 cm. It was essential for purposes of presented analysis not to apply pit removal routines which are often used for generation of DRM for hydrological modelling purposes. First, the methodology of analysis was prepared and tested on artificial surface. This surface was created using random raster generation, filtration and resampling with final resolution of 1000 x 1000 units and height of maximum 10 units above datum. The methodology itself is based on analysis of areas inundated by water at different elevation levels. Volume is than calculated for each depression using extraction of terrain elevations under corresponding water level. The method was then applied on the area of Lužnice River floodplain section to assess retention capacity of real floodplain. The floodplain had to be cut into sections perpendicular to main river orientation for analyses as the method was tested for square shaped area without any significant inclination. Results obtained by mentioned analysis are presented in this paper. Acknowledgement Presented research was accomplished within national project NIVA - Water Retention in Floodplains and Possibilities of Retention Capacity Increase, nr. QH82078. The project is funded by Ministry of Agriculture of the Czech Republic. The support is highly acknowledged.

David, Vaclav; Dostal, Tomas

2010-05-01

121

Nurse Retention in Home Health Care: Addressing the Revolving Door  

Microsoft Academic Search

An effective retention plan will be a critical component of a home health care agency's leap into the year 2000. Assessing current turnover and retention rates for your agency, surveying exiting and current staff, identifying the internal factors that lead to turnover, addressing these factors, and measuring the effects of your action plan at regular intervals are all key components

Kasey Chapin

1999-01-01

122

Defining IT's Role in Mission-Critical Retention Initiatives  

ERIC Educational Resources Information Center

Improving student success and increasing retention are important objectives for campuses worldwide. Too often, though, the persons responsible for retention are not clearly identified, and the information and tools needed to measure and improve student success are not available. These gaps provide an opportunity for IT to take a leadership role…

Coley, Tim

2010-01-01

123

What Works in Student Retention? All Survey Colleges  

ERIC Educational Resources Information Center

|This report reflects ACT's commitment to assist colleges and universities to better understand the impact of campus practices on college student retention and degree completion. Survey findings indicate that: (1) Only 51.7% of campuses have identified an individual responsible for coordinating retention strategies; (2) Only 47.2% of campuses have…

Habley, Wesley R.; McClanahan, Randy

2004-01-01

124

Flying Blind: National Graduation Goals and Adult Student Retention  

ERIC Educational Resources Information Center

The goal of this article is to shed light on a variety of metrics institutions and some accreditors currently use to track the retention of working adults. Further, it identifies a number of important principles that all stakeholders should consider when creating a standard measure of adult student retention. Finally, it describes a few errors to…

Tilghman, Chris

2012-01-01

125

Skill retention and relearning – a proposed cyclical model  

Microsoft Academic Search

Some of the conventions regarding relearning of complex tasks (requiring both psychomotor and procedural skills) are well known, especially as relating to retention curves. Still lacking, however, is information which better clarifies the relationship between relearning and skill retention. The purpose of this study was to examine this relationship while identifying the parameter affecting the duration between training intervals, in

S. Ginzburg; E. M. Dar-El

2000-01-01

126

CHANGING PERSPECTIVES ON STUDENT RETENTION: A Role for Institutional Research  

Microsoft Academic Search

This paper proposes a role for institutional research in changing institutional attitudes about the priority placed on student retention efforts. Problems associated with changing perspectives are described using Kuber-Ross's work On Death and Dying. Potential barriers associated with changing the status of student retention efforts within the institution are identified relative to her stages of grief-denial, hostility, bargaining, depression, and

Gerald W. Mclaughlin; Paul V. Brozovsky; Josetta S. Mclaughlin

1998-01-01

127

Development of a multiplexed polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay to identify common members of the Subgenera Culex (Culex) and Culex (Phenacomyia) in Guatemala.  

PubMed

Morphological differentiation of mosquitoes in the subgenera Culex (Culex) and Culex (Phenacomyia) in Guatemala is difficult, with reliable identification ensured only through examination of larval skins from individually reared specimens and associated male genitalia. We developed a multiplexed polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay to identify common Cx. (Cux.) and Cx. (Phc.). Culex (Cux.) chidesteri, Cx. (Cux.) coronator, Cx. (Cux.) interrogator, Cx. (Cux.) quinquefasciatus, Cx. (Cux.) nigripalpus/Cx. (Cux.) thriambus, and Cx. (Phc.) lactator were identified directly with a multiplexed primer cocktail comprising a conserved forward primer and specific reverse primers targeting ribosomal DNA (rDNA). Culex nigripalpus and Cx. thriambus were differentiated by restriction digest of homologous amplicons. The assay was developed and optimized using well-characterized specimens from Guatemala and the United States and field tested with unknown material from Guatemala. This assay will be a valuable tool for mosquito identification in entomological and arbovirus ecology studies in Guatemala. PMID:20682869

Kent, Rebekah J; Deus, Stephen; Williams, Martin; Savage, Harry M

2010-08-01

128

Seed Implant Retention Score Predicts the Risk of Prolonged Urinary Retention After Prostate Brachytherapy  

SciTech Connect

Purpose: To risk-stratify patients for urinary retention after prostate brachytherapy according to a novel seed implant retention score (SIRS). Patients and Methods: A total of 835 patients underwent transperineal prostate seed implant from March 1993 to January 2007; 197 patients had {sup 125}I and 638 patients had {sup 103}Pd brachytherapy. Four hundred ninety-four patients had supplemental external-beam radiation. The final downsized prostate volume was used for the 424 patients who had neoadjuvant hormone therapy. Retention was defined as reinsertion of a Foley catheter after the implant. Results: Retention developed in 7.4% of patients, with an average duration of 6.7 weeks. On univariate analysis, implant without supplemental external-beam radiation (10% vs. 5.6%; p = 0.02), neoadjuvant hormone therapy (9.4% vs. 5.4%; p = 0.02), baseline alpha-blocker use (12.5% vs. 6.3%; p = 0.008), and increased prostate volume (13.4% vs. 6.9% vs. 2.9%, >45 cm{sup 3}, 25-45 cm{sup 3}, <25 cm{sup 3}; p = 0.0008) were significantly correlated with increased rates of retention. On multivariate analysis, implant without supplemental external-beam radiation, neoadjuvant hormone therapy, baseline alpha-blocker use, and increased prostate volume were correlated with retention. A novel SIRS was modeled as the combined score of these factors, ranging from 0 to 5. There was a significant correlation between the SIRS and retention (p < 0.0001). The rates of retention were 0, 4%, 5.6%, 9%, 20.9%, and 36.4% for SIRS of 0 to 5, respectively. Conclusions: The SIRS may identify patients who are at high risk for prolonged retention after prostate brachytherapy. A prospective validation study of the SIRS is planned.

Lee, Hoon K., E-mail: Dr.Hoon@gmail.co [Regional Radiation Oncology, Staten Island, NY (United States); Department of Radiation Oncology, Richmond University Medical Center, Staten Island, NY (United States); Adams, Marc T. [Regional Radiation Oncology, Staten Island, NY (United States); Department of Radiation Oncology, Richmond University Medical Center, Staten Island, NY (United States); Shi, Qiuhu [Department of Biostatistics, School of Public Health, New York Medical School, Valhalla, NY (United States); Basillote, Jay; LaMonica, Joanne; Miranda, Luis; Motta, Joseph [Department of Urology, Richmond University Medical Center, Staten Island, NY (United States)

2010-04-15

129

Recruitment, Retention, Attrition Project.  

ERIC Educational Resources Information Center

|Based on a series of faculty workshops conducted at Jefferson Community College (KY) in 1978 and 1980, this handbook outlines 95 practical suggestions for increasing student retention rates. After introductory material describing these workshops, the first 22 suggestions recommend ways to foster positive student/teacher interaction. Methods are…

Horvath, Ronald J., Ed.

130

Secrets of Retention  

ERIC Educational Resources Information Center

Recruiting students is one thing, but keeping them in a chorus, orchestra, or band is another. Although a music director has no control over some variables, there is much that can be done to help students to stay. Several experts share their advice on retention. One expert said a teacher's own attitude and classroom strategies may be two of the…

Poliniak, Susan

2012-01-01

131

Come and stay a while: does financial aid effect retention conditioned on enrollment at a large public university?  

Microsoft Academic Search

Few studies examine whether financial aid affects college retention. This paper uses University of Oregon data to examine financial aid’s affect on retention net of uniquely detailed enrollee attributes and conditioned on unobserved enrollee attributes identified by jointly modeling retention and enrollment. The results show that need- and merit-based aid significantly increase retention, but that these effects are biased by

Larry D. Singell Jr

2004-01-01

132

Identifying harms.  

PubMed

Moral disagreements often revolve around the issue of harm to others. Identifying harms, however, is a contested enterprise. This paper provides a conceptual toolbox for identifying harms, and so possible wrongdoing, by drawing several distinctions. First, I distinguish between four modes of human vulnerability, forming four ways in which one can be in a harmed state. Second, I argue for the intrinsic disvalue of harm and so distinguish the presence of harm from the fact that it is instrumental to or constitutive of a valued act, practice or way of life. Finally, I distinguish between harm and wrongdoing, arguing that while harm is a normative concept requiring justification, not all harmed states are automatically unjustified. The advantage of this view is that it refocuses the moral debate on the normative issues involved while establishing a common basis to which both sides can agree: the presence of harm to others. PMID:21434956

Harrosh, Shlomit

2011-03-25

133

Generic Recruitment and Retention Plan  

Cancer.gov

February 23, 2010 Version 3 Division of Cancer Prevention Recruitment Retention and Adherence Plan TemplateInstructions NCI DCP requires a study-specific recruitment, retention and adherence (RRA) plan for each cancer chemoprevention study. Each participating

134

Assessing Chemical Retention Process Controls in Ponds  

NASA Astrophysics Data System (ADS)

Small ponds are a ubiquitous component of the landscape and have earned a reputation as effective chemical retention devices. The most common characterization of pond chemical retention is the retention coefficient, Ri= ([Ci]inflow-[Ci] outflow)/[Ci]inflow. However, this parameter varies widely in one pond with time and among ponds. We have re-evaluated literature reported (Borden et al., 1998) monthly average retention coefficients for two ponds in North Carolina. Employing a simple first order model that includes water residence time, the first order process responsible for species removal have been separated from the water residence time over which it acts. Assuming the rate constant for species removal is constant within the pond (arguable at least), the annual average rate constant for species removal is generated. Using the annual mean rate constant for species removal and monthly water residence times results in a significantly enhanced predictive capability for Davis Pond during most months of the year. Predictive ability remains poor in Davis Pond during winter/unstratified periods when internal loading of P and N results in low to negative chemical retention. Predictive ability for Piedmont Pond (which has numerous negative chemical retention periods) is improved but not to the same extent as Davis Pond. In Davis Pond, the rate constant for sediment removal (each month) is faster than the rate constant for water and explains the good predictability for sediment retention. However, the removal rate constant for P and N is slower than the removal rate constant for sediment (longer water column residence time for P,N than for sediment). Thus sedimentation is not an overall control on nutrient retention. Additionally, the removal rate constant for P is slower than for TOC (TOC is not the dominate removal process for P) and N is removed slower than P (different in pond controls). For Piedmont Pond, sediment removal rate constants are slower than the removal rate constant for water indicating significant sediment resuspension episodes. It appears that these sediment resuspension events are aperiodic and control the loading and the chemical retention capability of Piedmont Pond for N,P,TOC. These calculated rate constants reflect the differing internal loading processes for each component and suggest means and mechanisms for the use of ponds in water quality management.

Torgersen, T.; Branco, B.; John, B.

2002-05-01

135

Teacher Retention: Problems and Solutions  

ERIC Educational Resources Information Center

There is a teacher retention crisis in the United States. The purpose of this paper is to answer the following questions: What contributes to teachers leaving the field? How has "No Child Left Behind" affected teacher retention? What can be done to retain good teachers? What impact do school administrators have on teacher retention? After…

McLaurin, Sidney E.; Smith, Willis; Smillie, Amanda

2009-01-01

136

Research Synopsis: Spring 1983 Retention.  

ERIC Educational Resources Information Center

An analysis of spring 1983 retention rates and grade distributions within the Peralta Community College District (PCCD) revealed: (1) College of Alameda had the highest successful retention rate in the PCCD, defined as the total of all students who completed the term with a grade of A, B, C, D, or CR (credit); (2) the PCCD's successful retention

Peralta Community Coll. District, Oakland, CA. Office of Research, Planning and Development.

137

Common Cold  

MedlinePLUS

... nose, coughing - everyone knows the symptoms of the common cold. It is probably the most common illness. In ... avoid colds. There is no cure for the common cold. For relief, try Getting plenty of rest Drinking ...

138

Variability of Moisture Retention and Hydrophobicity Among Biochars  

EPA Science Inventory

This research identifies factors and mechanisms that control changes in moisture retention when biochars produced from different feedstocks and under different heat treatment temperatures are mixed with fine sand. While substantial experimental research has been conducted on the ...

139

Fatigue Evaluation of WTS-3 Wind Turbine Blade and Retention.  

National Technical Information Service (NTIS)

The WTS-3 wind turbine blade and retention computed stress levels are compared to material properties, and potentially fatigue critical areas are identified. For the blade, these are flatwise spar stresses, and blade shell flatwise stresses. It is not pos...

A. I. Gustavsson A. F. Blom

1987-01-01

140

Retention: A Model  

NASA Astrophysics Data System (ADS)

Bowie State University, one of six institutions, received a Model Institution for Excellence Award through the National Science Foundation and was funded by the National Aeronautic Space Administration - Goddard Space Flight Center. The primary goals for the Initiative are to increase Science Mathematics Engineering and Technology (SMET)student enrollment, retention and graduation rates and the number of minorities and women entering graduate school and SMET related workforces. Additionally, a satellite operations and control center was established at Bowie State University to provide training for students interested in space science. Thus far, the number of students entering the SMET domain has increase, the retention rate is up to 72-75%, graduation rate is up 80% and approximately 70 certifications have been awarded to students as Command Controllers, Spacecraft Analysts or Mission Planners as a result of their training in the Bowie State Satellite Operations and Control Center (BSOCC). The partnership between NASA and Bowie State University has been extremely beneficial to both and has established a model for the retention of science, mathematics, engineering and technology students.

Davis, E. J.; Strand, D.; Wiggs, M.

2004-12-01

141

Genome-Wide Association Study among Four Horse Breeds Identifies a Common Haplotype Associated with In Vitro CD3+ T Cell Susceptibility/Resistance to Equine Arteritis Virus Infection ?  

PubMed Central

Previously, we have shown that horses could be divided into susceptible and resistant groups based on an in vitro assay using dual-color flow cytometric analysis of CD3+ T cells infected with equine arteritis virus (EAV). Here, we demonstrate that the differences in in vitro susceptibility of equine CD3+ T lymphocytes to EAV infection have a genetic basis. To investigate the possible hereditary basis for this trait, we conducted a genome-wide association study (GWAS) to compare susceptible and resistant phenotypes. Testing of 267 DNA samples from four horse breeds that had a susceptible or a resistant CD3+ T lymphocyte phenotype using both Illumina Equine SNP50 BeadChip and Sequenom's MassARRAY system identified a common, genetically dominant haplotype associated with the susceptible phenotype in a region of equine chromosome 11 (ECA11), positions 49572804 to 49643932. The presence of a common haplotype indicates that the trait occurred in a common ancestor of all four breeds, suggesting that it may be segregated among other modern horse breeds. Biological pathway analysis revealed several cellular genes within this region of ECA11 encoding proteins associated with virus attachment and entry, cytoskeletal organization, and NF-?B pathways that may be associated with the trait responsible for the in vitro susceptibility/resistance of CD3+ T lymphocytes to EAV infection. The data presented in this study demonstrated a strong association of genetic markers with the trait, representing de facto proof that the trait is under genetic control. To our knowledge, this is the first GWAS of an equine infectious disease and the first GWAS of equine viral arteritis.

Go, Yun Young; Bailey, Ernest; Cook, Deborah G.; Coleman, Stephen J.; MacLeod, James N.; Chen, Kuey-Chu; Timoney, Peter J.; Balasuriya, Udeni B. R.

2011-01-01

142

Selenide retention by mackinawite.  

PubMed

The isotope (79)Se may be of great concern with regard to the safe disposal of nuclear wastes in deep geological repositories due to its long half-life and potential mobility in the geosphere. The Se mobility is controlled by the oxidation state: the oxidized species (Se(IV)) and (Se(VI)) are highly mobile, whereas the reduced species (Se(0) and Se(-II)) form low soluble solids. The mobility of this trace pollutant can be greatly reduced by interacting with the various barriers of the repository. Numerous studies report on the oxidized species retention by mineral phases, but only very scarce studies report on the selenide (Se(-II)) retention. In the present study, the selenide retention by coprecipitation with and by adsorption on mackinawite (FeS) was investigated. XRD and SEM analyses of the samples reveal no significant influence of Se on the mackinawite precipitate morphology and structure. Samples from coprecipitation and from adsorption are characterized at the molecular scale by a multi-edge X-ray absorption spectroscopy (XAS) investigation. In the coprecipitation experiment, all elements (S, Fe, and Se) are in a low ionic oxidation state and the EXAFS data strongly point to selenium located in a mackinawite-like sulfide environment. By contacting selenide ions with FeS in suspension, part of Se is located in an environment similar to that found in the coprecipitation experiment. The explanation is a dynamical dissolution-recrystallization mechanism of the highly reactive mackinawite. This is the first experimental study to report on selenide incorporation in iron monosulfide by a multi-edge XAS approach. PMID:22900520

Finck, N; Dardenne, K; Bosbach, D; Geckeis, H

2012-09-04

143

Common cold  

MedlinePLUS

... C for preventing and treating the common cold. Cochrane Database of Systematic Reviews 2007, Issue 3. Art. ... M, Das RR. Zinc for the common cold. Cochrane Database of Systematic Reviews 2011, Issue 2. Art. ...

144

Common Warts  

MedlinePLUS

Common warts Basics In-Depth Multimedia Resources Reprints A single copy of this article may be reprinted for personal, noncommercial use only. Common warts By Mayo Clinic staff Original Article: http://www. ...

145

Replication of genome wide association identified candidate genes confirm the role of common and rare variants in PAX7 and VAX1 in the etiology of nonsyndromic CL(P).  

PubMed

Following recent genome wide association studies (GWAS), significant genetic associations have been identified for several genes with nonsyndromic cleft lip with or without cleft palate (CL(P)). To replicate two of these GWAS signals, we investigated the role of common and rare variants in the PAX7 and VAX1 genes. TaqMan genotyping was carried out for SNPs in VAX1 and PAX7 and transmission disequilibrium test (TDT) was performed to test for linkage and association in each population. Direct sequencing in and around the PAX7 and VAX1 genes in 1,326 individuals of European and Asian ancestry was done. The TDT analysis showed strong associations with markers in VAX1 (rs7078160, P = 2.7E-06 and rs475202, P = 0.0002) in a combined sample of Mongolian and Japanese CL(P) case-parent triads. Analyses using parent-of-origin effects showed significant excess transmission of the minor allele from both parents with the effect in the mothers (P = 6.5E-05, OR (transmission) = 1.91) more striking than in the fathers (P = 0.004, OR (transmission) = 1.67) for VAX1 marker rs7078160 in the combined Mongolian and Japanese samples when all cleft types were combined. The rs6659735 trinucleotide marker in PAX7 was significantly associated with all the US cleft groups combined (P = 0.007 in all clefts and P = 0.02 in CL(P)). Eight rare missense mutations found in PAX7 and two rare missense mutations in VAX1. Our study replicated previous GWAS findings for markers in VAX1 in the Asian population, and identified rare variants in PAX7 and VAX1 that may contribute to the etiology of CL(P). Determining the role of rare variants clearly warrants further investigation. PMID:23463464

Butali, Azeez; Suzuki, Satoshi; Cooper, Margaret E; Mansilla, Adela M; Cuenco, Karen; Leslie, Elizabeth J; Suzuki, Yasushi; Niimi, Teruyuki; Yamamoto, Masahiko; Ayanga, Gongorjav; Erkhembaatar, Tudevdorj; Furukawa, Hiroo; Fujiwawa, Kumiko; Imura, Hideto; Petrin, Aline L; Natsume, Nagato; Beaty, Terri H; Marazita, Mary L; Murray, Jeffery C

2013-03-05

146

Using standardized fMRI protocols to identify patterns of prefrontal circuit dysregulation that are common and specific to cognitive and emotional tasks in major depressive disorder: first wave results from the iSPOT-D study.  

PubMed

Functional neuroimaging studies have implicated dysregulation of prefrontal circuits in major depressive disorder (MDD), and these circuits are a viable target for predicting treatment outcomes. However, because of the heterogeneity of tasks and samples used in studies to date, it is unclear whether the central dysfunction is one of prefrontal hyperreactivity or hyporeactivity. We used a standardized battery of tasks and protocols for functional magnetic resonance imaging, to identify the common vs the specific prefrontal circuits engaged by these tasks in the same 30 outpatients with MDD compared with 30 matched, healthy control participants, recruited as part of the International Study to Predict Optimized Treatment in Depression (iSPOT-D). Reflecting cognitive neuroscience theory and established evidence, the battery included cognitive tasks designed to assess functions of selective attention, sustained attention-working memory and response inhibition, and emotion tasks to assess explicit conscious and implicit nonconscious viewing of facial emotion. MDD participants were distinguished by a distinctive biosignature of: hypoactivation of the dorsolateral prefrontal cortex during working memory updating and during conscious negative emotion processing; hyperactivation of the dorsomedial prefrontal cortex during working memory and response inhibition cognitive tasks and hypoactivation of the dorsomedial prefrontal during conscious processing of positive emotion. These results show that the use of standardized tasks in the same participants provides a way to tease out prefrontal circuitry dysfunction related to cognitive and emotional functions, and not to methodological or sample variations. These findings provide the frame of reference for identifying prefrontal biomarker predictors of treatment outcomes in MDD. PMID:23303059

Korgaonkar, Mayuresh S; Grieve, Stuart M; Etkin, Amit; Koslow, Stephen H; Williams, Leanne M

2012-12-05

147

The "Ins and Outs" of Marketing and Retention in Virginia's Community Colleges: Exemplary Marketing and Retention Practices in the Virginia Community College System. Volume I.  

ERIC Educational Resources Information Center

|The Virginia Community College System (VCCS) initiated the Marketing and Retention Recognition Program (MRRP) to identify and publicize innovative marketing and retention activities being implemented throughout the system. This report offers brief sketches of some of the exemplary projects identified by the MRRP. First, introductory material…

Puyear, Don, Ed.; And Others

148

Auditing a Database under Retention Restrictions  

Microsoft Academic Search

Abstract—Auditing,the changes,to a database,is critical for identifying malicious behavior, maintaining data quality, and improving,system,performance.,But an accurate,audit log is a historical record of the past that can also pose a serious threat to privacy. Policies which,limit data retention conflict with the goal of accurate auditing, and data owners have to carefully balance the need for policy compliance,with the goal of accurate

Wentian Lu; Gerome Miklau

2009-01-01

149

Solvent Retention and Fibre Chemistry.  

National Technical Information Service (NTIS)

The aim of this study was to understand in which way different chemical and physical treatments affect the solvent retention properties of pulps used in the middle layer of folding boxboard. The solvent retention properties of the treated pulps were exami...

M. Rantanen

2003-01-01

150

Mechanical Retention of Resin Veneers.  

National Technical Information Service (NTIS)

Mechanical retention of resin veneers is provided for by a number of means, including the use of retentive beads. Studies have been reported in which resin-gold bonds were evaluated using beads, but no known effort had been made to determine the number be...

J. W. O'Hara W. G. Richardson R. J. Leupold G. B. Pelleu

1974-01-01

151

Retention: Are Students Good Predictors?  

Microsoft Academic Search

The retention rates of engineering students, in general, are much lower than they should be. Of particular concern is the fact that women and underrepresented minorities are not only recruited in small numbers, but their retention rates are also low. Research has shown that there are many actions that can be done to help retain students. In order to better

Mary R. Anderson-Rowland

152

Bridging the Gaps in Retention.  

ERIC Educational Resources Information Center

This paper reviews the literature on student retention at urban colleges and explores notions of student involvement and academic and social integration especially in relation to nontraditional students. It describes some programmatic interventions designed to improve retention. The paper concludes that partnerships with public schools may have a…

Pacheco, Arturo

1994-01-01

153

Leaf retention and cassava productivity  

Microsoft Academic Search

Increased longevity of leaves, or improved leaf retention, has been suggested as a possible means to increase productivity of cassava (Manihot esculenta Crantz). This study evaluated variation in leaf retention and its relation to cassava productivity under irrigated and stressed conditions. In the first trial 1350 clones were evaluated on the North Coast of Colombia with a 5-month dry period

J. I. Lenis; F. Calle; G. Jaramillo; J. C. Perez; H. Ceballos; J. H. Cock

2006-01-01

154

Increasing undergraduate student retention rates  

Microsoft Academic Search

Based on data from a questionnaire survey of the new undergraduate intake to the University of Birmingham, the factors which influence withdrawal\\/retention rates in the first term were examined. The effectiveness of counselling intervention with first-year undergraduate students at risk of leaving university in their first term is also explored. The implications for universities wishing to increase retention rates and

Barbara Rickinson; Desmond Rutherford

1995-01-01

155

Common Chemistry  

NSDL National Science Digital Library

A web resource that contains Chemical Abstracts Service (CAS) Registry Numbers for approximately 7,800 chemicals of widespread general public interest. Common Chemistry is helpful to non-chemists who know either a name or CAS Registry Number® of a common chemical and want to pair both pieces of information.

Chemical Abstracts Service (CAS)

156

Participant Retention in the Veterans Health Administration's MOVE! Weight Management Program, 2010  

PubMed Central

Introduction Participant retention is a frequent concern in structured weight-management programs. Although research has explored participant characteristics influencing retention, little attention has been given to the influence of program characteristics. The objective of this study was to examine how program characteristics relate to participant retention in the Veterans Health Administration’s weight-management program, MOVE! Methods We conducted semistructured interviews with coordinators of 12 MOVE! programs located throughout the United States, 5 with high participant retention rates and 7 with low rates. We transcribed and descriptively coded interviews and compared responses from high- and low-retention programs. Results Characteristics related to retention were provider knowledge of and referral to the program, reputation of the program within the medical facility, the MOVE! meeting schedule, inclusion of physical activity in group meetings, and involvement of the MOVE! physician champion. MOVE! introductory sessions, frequency of group meetings, and meeting topics were not related to retention. Coordinators described efforts to improve retention, including participant contracts and team competitions. Coordinators at 5 high-retention facilities and 1 low-retention facility discussed efforts to improve retention. Conclusion Coordinators identified important program characteristics that could guide improvements to retention in group-based weight-management programs. Training for providers is needed to assist with referral decisions, and program planners should consider incorporating physical activity in group meetings.

Sohn, Min-Woong; Spring, Bonnie; Hadi, Sattar; Weaver, Frances M.

2012-01-01

157

Simulating the Retention of an Atmosphere  

NASA Astrophysics Data System (ADS)

This poster will describe new simulations exploring concepts related to the retention of an atmosphere. Users have will have the capability to investigate the distribution of speeds for common gases and how they vary with temperature. Another simulator will focus on escape velocity. These concepts will be linked together in simulating exactly which gases are retained by various solar system bodies over time. The Nebraska Astronomy Applet Project consists of high quality astrophysics simulations surrounded by variety of supporting materials. The resources include complete background information, student guides, instructor guides, and embedded assessment. These materials are publicly available at http://astro.unl.edu and are funded by NSF grant #0231270.

Lee, Kevin M.; Siedell, C. M.; Davis, A. N.

2006-12-01

158

Push and pull factors affecting the retention of university students in a climate of civil war  

Microsoft Academic Search

Despite over 70 years of research, the retention of university students remains a major issue. In countries ravaged by long-term strife, the failure of universities to retain students has both immediate and long- term catastrophic consequences. Tinto (2005) identifies five factors that institutions can influence to increase retention. Somasundaram (2002) identifies psycho-social push and pull factors that affect the behaviour

Daya Somasundaram; Ratnajeevan Hoole; Arjuna Somasundaram

159

Data Retention and Anonymity Services  

NASA Astrophysics Data System (ADS)

The recently introduced legislation on data retention to aid prosecuting cyber-related crime in Europe also affects the achievable security of systems for anonymous communication on the Internet. We argue that data retention requires a review of existing security evaluations against a new class of realistic adversary models. In particular, we present theoretical results and first empirical evidence for intersection attacks by law enforcement authorities. The reference architecture for our study is the anonymity service AN.ON, from which we also collect empirical data. Our adversary model reflects an interpretation of the current implementation of the EC Directive on Data Retention in Germany.

Berthold, Stefan; Böhme, Rainer; Köpsell, Stefan

160

Common Cold  

NSDL National Science Digital Library

This Web site provides comprehensive information, selected by medical doctors, about the common cold. The goal is to provide a framework for critical thinking which will allow informed decisions about medical care for the common cold. The section entitled Understanding Colds gives a detailed overview of how the cold virus invades the human body and how cold symptoms are caused. Information about preventing colds, and some of the complications that can occur are also included. The Special Features section includes one of the most interesting parts of the site -- Myths of the Common Cold. This site should be interesting to almost anyone, but perhaps more so for those of us who have recently had a cold.

2007-12-12

161

Diversity and Retention in Engineering  

ERIC Educational Resources Information Center

|The authors describe three initiatives designed to increase the academic achievement and retention of historically underrepresented students (including females and underrepresented students of color) in engineering. (Contains 2 tables.)|

Davis, Cinda-Sue G.; Finelli, Cynthia J.

2007-01-01

162

Rip Current Retention  

NASA Astrophysics Data System (ADS)

Here, we show for the first time spatially synoptic estimates of rip current flow patterns and Lagrangian transport behavior using a fleet of 30 position-tracking surfzone drifters over multiple rip current systems in Sand City, Monterey Bay, CA. The rotational characteristics of the rip current resulted in a high number of Lagrangian observations that temporally and spatially iterated. Only 10% of the drifters that entered a rip current exited the surf zone resulting in high surfzone retention with maxima occurring in the center of the rip current vortices. Rip current diffusivities in the cross-shore have a periodic response, which modulates at ~300s, the time required for a drifter to complete one revolution around a rip current cell, before decreasing to an asymptotic limit. This suggests that material initially (t<90 s; ?xx = 4.9 - 6.1 m2/s) diffuses, then re-collects, reaching a lower asymptote (t>200 s; ?xx = 0.9 - 2.2 m2/s). The alongshore diffusivity is also periodic, but its asymptotic limit is larger (?yy = 2.8 - 3.9 m2/s), as the drifters spread to neighboring rip currents, whereas the cross-shore offshore limited by the surf zone width, reducing material transport. Asymptotic rip current diffusivities are similar to other asymptotic diffusivities of surf zones that support non-rip current circulation patterns. New thoughts of rip current behaviors are presented suggesting that rip currents retain more floatsom material within the surf zone as opposed to transporting floatsom material offshore.

Thornton, E.; Macmahan, J.; Reniers, A.; Brown, J.; Stanton, T.; Brown, J.

2008-12-01

163

The Recruitment and Retention of African-American Students in Gifted Education Programs: Implications and Recommendations. Recruitment and Retention Research-Based Decision Making Series 9406.  

ERIC Educational Resources Information Center

|This report describes barriers to the successful recruitment and retention of African American students in gifted education programs and services, and offers recommendations for ensuring successful recruitment and retention of this population. Barriers to recruitment identified include: inadequate identification practices, too little attention…

Ford, Donna Y.

164

Retention properties of triacylglycerols on silver ion high-performance liquid chromatography  

Microsoft Academic Search

The retention properties of series of synthetic disaturated-monounsaturated (1 to 6 double bonds) triacylglycerols and the common seed oil triacylglycerols on a silver ion high-performance liquid chromatography column have been studied in quantitative terms. Retention factors were found to increase stepwise, with a saturated dimonoenoic species being held ten times and trilinolenin ten thousand times more strongly than a disaturated

Boryana Nikolova-Damyanova; William W. Christie; Bengt G. Herslöf

1995-01-01

165

Enhancing Minority Student Retention and Academic Performance: What We Can Learn from Program Evaluations  

ERIC Educational Resources Information Center

In this important resource, Dr. Fleming (a noted expert in the field of minority retention) draws on educational evaluations she has developed in the course of her distinguished career. This book analyzes the common factors and the role institutional characteristics play in minority student retention to show what really works in increasing…

Fleming, Jacqueline

2012-01-01

166

Errors in water retention curves determined with pressure plates and their effect on soil hydraulic properties  

Microsoft Academic Search

Pressure plates are commonly used to measure the soil water retention curve. Low plate and soil conductance, lack of plate-soil contact, and soil dispersion, however, make this method often unreliable at low water potentials. In this paper, we investigate how errors in the determination of the water retention curve affect the soil hydraulic properties and the computation of plant available

M. Bittelli; M. Flury

2009-01-01

167

Common Beans  

Microsoft Academic Search

The common bean (Phaseolus vulgaris L.) is one of the most widely cultivated legumes in the world, occupying over 27 million hectares of tropical and temperate\\u000a agricultural land in the Americas, Europe, Africa and Asia (FAO, 2003). The genus Phaseolus is of American origin and comprises over 30 species (Debouck, 1999). P. vulgaris is the most widely grown legume, occupying

Francisco J. Morales

168

A Social Network Analysis of Student Retention Using Archival Data  

ERIC Educational Resources Information Center

This study attempts to determine if a relationship exists between first-to-second-year retention and social network variables for a cohort of first-year students at a small liberal arts college. The social network is reconstructed using not survey data as is most common, but rather using archival data from a student information system. Each…

Eckles, James E.; Stradley, Eric G.

2012-01-01

169

Orthodontic band retention on primary molar stainless steel crowns  

Microsoft Academic Search

The retention of orthodontic bands cemented on primary molar stainless steel crowns (SSC) was studied in vitro. Unitek maxillary and mandibular 1st and 2nd primary molar SSC were fitted with one of four commonly used orthodontic bands (Unitek regular, Unitek narrow, Rocky Mountain, or custom bands made from SSC) using glass ionomer cement. The cemented samples were tested for their

Randy L. Beemer; Jack L. Ferracane; Harold E. Howard

1993-01-01

170

A Social Network Analysis of Student Retention Using Archival Data  

ERIC Educational Resources Information Center

|This study attempts to determine if a relationship exists between first-to-second-year retention and social network variables for a cohort of first-year students at a small liberal arts college. The social network is reconstructed using not survey data as is most common, but rather using archival data from a student information system. Each…

Eckles, James E.; Stradley, Eric G.

2012-01-01

171

Retention Rate by Ethnicity. Information Capsule.  

ERIC Educational Resources Information Center

|This document discusses retention rate based on ethnicity for Miami-Dade Community College (M-DCC) for December 2002. The study found that the 2001 Fall-Spring retention rates increased among all ethnic groups. The total college retention rate rose by 2.7 percentage points to 75.2%. Among individual groups, the highest retention rate of 76.9% was…

Baldwin, Anne

172

Innovative techniques to address retention in a behavioral weight-loss trial  

Microsoft Academic Search

Given that retention rates for weight-loss trials have not significantly improved in the past 20 years, identifying effective techniques to en- hance retention is critical. This paper describes a conceptual and practical advance that may have improved retention in a behavioral weight- loss trial—the novel application of motivational interviewing techniques to diffuse ambivalence during interactive group-based orientation ses- sions prior

Jennifer H. Goldberg; Michaela Kiernan

2005-01-01

173

Reactive barriers for {sup 137}Cs retention  

SciTech Connect

{sup 137}Cs was dispersed globally by cold war activities and, more recently, by the Chernobyl accident. Engineered extraction of {sup 137}Cs from soils and groundwaters is exceedingly difficult. Because the half life of {sup 137}Cs is only 30.2 years, remediation might be more effective (and less costly) if {sup 137}Cs bioavailability could be demonstrably limited for even a few decades by use of a reactive barrier. Essentially permanent isolation must be demonstrated in those few settings where high nuclear level wastes contaminated the environment with {sup 135}Cs (half life 2.3x10{sup 6} years) in addition to {sup 137}Cs. Clays are potentially a low-cost barrier to Cs movement, though their long-term effectiveness remains untested. To identify optimal clays for Cs retention Cs resorption was measured for five common clays: Wyoming Montmorillonite (SWy-1), Georgia Kaolinites (KGa-1 and KGa-2), Fithian Illite (F-Ill), and K-Metabentonite (K-Mbt). Exchange sites were pre-saturated with 0.16 M CsCl for 14 days and readily exchangeable Cs was removed by a series of LiNO{sub 3} and LiCl washes. Washed clay were then placed into dialysis bags and the Cs release to the deionized water outside the bags measured. Release rates from 75 to 139 days for SWy-1, K-Mbt and F- 111 were similar; 0.017 to 0.021% sorbed Cs released per day. Both kaolinites released Cs more rapidly (0.12 to 0.05% of the sorbed Cs per day). In a second set of experiments, clays were doped for 110 days and subjected to an extreme and prolonged rinsing process. All the clays exhibited some capacity for irreversible Cs uptake so most soils have some limited ability to act as a natural barrier to Cs migration. However, the residual loading was greatest on K-Mbt ({approximately} 0.33 wt% Cs). Thus, this clay would be the optimal material for constructing artificial reactive barriers.

KRUMHANSL,JAMES L.; BRADY,PATRICK V.; ANDERSON,HOWARD L.

2000-05-19

174

Minority Student Retention.  

ERIC Educational Resources Information Center

Discusses the community college's role in Native American education. Describes recruitment, counseling, assessment, remedial, and outreach programs developed by San Juan College to help minority students succeed, and specifically help Native Americans bridge the worlds of public school, reservation, and university. Identifies keys to the programs'…

Henderson, James C.

1991-01-01

175

Analysis of common bean expressed sequence tags identifies sulfur metabolic pathways active in seed and sulfur-rich proteins highly expressed in the absence of phaseolin and major lectins  

Microsoft Academic Search

Background  A deficiency in phaseolin and phytohemagglutinin is associated with a near doubling of sulfur amino acid content in genetically\\u000a related lines of common bean (Phaseolus vulgaris), particularly cysteine, elevated by 70%, and methionine, elevated by 10%. This mostly takes place at the expense of an abundant\\u000a non-protein amino acid, S-methyl-cysteine. The deficiency in phaseolin and phytohemagglutinin is mainly compensated by

Fuqiang Yin; Agnieszka Pajak; Ralph Chapman; Andrew Sharpe; Shangzhi Huang; Frédéric Marsolais

2011-01-01

176

Retention of hydrogen in graphite  

SciTech Connect

The retention of hydrogen in POCO AXF-5Q graphite has been measured at room temperature as a function of fluence and flux for H/sub 2//sup +/ ions at energies from 250 to 500 eV provided by a glow discharge. More than 2 x 10/sup 18/ H/cm/sup 2/ has been retained, and no indication of saturation has been observed to a fluence of 5 x 10/sup 19/ H/cm/sup 2/. In this experiment, retention was found to increase linearly with fluence for constant flux. A flux dependence was observed; that is, the retention rate was observed to decrease monotonically as the flux increased. A change-over experiment, deuterium to hydrogen, was conducted; the results show that significant change-over occurs (i.e., about 30% change-over for a fluence of 5 x 10/sup 17/ D/cm/sup 2/).

Langley, R.A.

1986-10-01

177

Diffusion-limited retention of porous particles at density interfaces  

PubMed Central

Downward carbon flux in the ocean is largely governed by particle settling. Most marine particles settle at low Reynolds numbers and are highly porous, yet the fluid dynamics of this regime have remained unexplored. We present results of an experimental investigation of porous particles settling through a density interface at Reynolds numbers between 0.1 and 1. We tracked 100 to 500 ?m hydrogel spheres with 95.5% porosity and negligible permeability. We found that a small negative initial excess density relative to the lower (denser) fluid layer, a common scenario in the ocean, results in long retention times of particles at the interface. We hypothesized that the retention time was determined by the diffusive exchange of the stratifying agent between interstitial and ambient fluid, which increases excess density of particles that have stalled at the interface, enabling their settling to resume. This hypothesis was confirmed by observations, which revealed a quadratic dependence of retention time on particle size, consistent with diffusive exchange. These results demonstrate that porosity can control retention times and therefore accumulation of particles at density interfaces, a mechanism that could underpin the formation of particle layers frequently observed at pycnoclines in the ocean. We estimate retention times of 3 min to 3.3 d for the characteristic size range of marine particles. This enhancement in retention time can affect carbon transformation through increased microbial colonization and utilization of particles and release of dissolved organics. The observed size dependence of the retention time could further contribute to improve quantifications of vertical carbon flux.

Kindler, Kolja; Khalili, Arzhang; Stocker, Roman

2010-01-01

178

Developing a neonatal workforce: role evolution and retention of advanced neonatal nurse practitioners  

Microsoft Academic Search

Background: Over the past decade more than 120 advanced neonatal nurse practitioners (ANNPs) have graduated from the Southampton based ANNP programme.Objectives: To determine the scope of practice and evolving role of ANNPs and to identify factors that may affect future recruitment and retention.Method: An open ended structured questionnaire on clinical role, working arrangements, retention and attrition, continuing education, and professional

S L Smith; M A Hall

2003-01-01

179

Confounding Impacts of Iron Reduction on Arsenic Retention  

SciTech Connect

A transition from oxidizing to reducing conditions has long been implicated to increase aqueous As concentrations, for which reductive dissolution of iron (hydr)oxides is commonly implicated as the primary culprit. Confounding our understanding of processes controlling As retention, however, is that reductive transformation of ferrihydrite has recently been shown to promote As retention rather than release. To resolve the role iron phases have in regulating arsenic concentrations, here we examine As desorption from ferrihydrite-coated sands presorbed with As(lll); experiments were performed at circumneutral pH under Fe-reducing conditions with the dissimilatory iron reducing bacterium Shewanella putrefaciens strain CN-32 over extended time periods. We reveal that with the initial phase of iron reduction, ferrihydrite undergoes transformation to secondary phases and increases As(lll) retention (relative to abiotic controls). However, with increased reaction time, cessation of the phase transitions and ensuing reductive dissolution result in prolonged release of As(III) to the aqueous phase. Our results suggest that As(lll) retention during iron reduction is temporally dependent on secondary precipitation of iron phases; during transformation to secondary phases, particularly magnetite, As(lll) retention is enhanced even relative to oxidized systems. However, conditions that retard secondary transformation (more stable iron oxides or limited iron reducing bacterial activity), or prolonged anaerobiosis, will lead to both the dissolution of ferric (hydr)oxides and release of As(lll) to the aqueous phase.

Tufano, K.J.; Fendorf, S.

2009-05-26

180

Confounding impacts of iron reduction on arsenic retention.  

PubMed

A transition from oxidizing to reducing conditions has long been implicated to increase aqueous As concentrations, for which reductive dissolution of iron (hydr)oxides is commonly implicated as the primary culprit. Confounding our understanding of processes controlling As retention, however, is that reductive transformation of ferrihydrite has recently been shown to promote As retention rather than release. To resolve the role iron phases have in regulating arsenic concentrations, here we examine As desorption from ferrihydrite-coated sands presorbed with As(III); experiments were performed at circumneutral pH under Fe-reducing conditions with the dissimilatory iron reducing bacterium Shewanella putrefaciens strain CN-32 over extended time periods. We reveal that with the initial phase of iron reduction, ferrihydrite undergoes transformation to secondary phases and increases As(III) retention (relative to abiotic controls). However, with increased reaction time, cessation of the phase transitions and ensuing reductive dissolution result in prolonged release of As(III) to the aqueous phase. Our results suggest that As(III) retention during iron reduction is temporally dependent on secondary precipitation of iron phases; during transformation to secondary phases, particularly magnetite, As(III) retention is enhanced even relative to oxidized systems. However, conditions that retard secondary transformation (more stable iron oxides or limited iron reducing bacterial activity), or prolonged anaerobiosis, will lead to both the dissolution of ferric (hydr)oxides and release of As(III) to the aqueous phase. PMID:18678005

Tufano, Katharine J; Fendorf, Scott

2008-07-01

181

A simple approximation for larval retention around reefs  

NASA Astrophysics Data System (ADS)

Estimating larval retention at individual reefs by local scale three-dimensional flows is a significant problem for understanding, and predicting, larval dispersal. Determining larval dispersal commonly involves the use of computationally demanding and expensively calibrated/validated hydrodynamic models that resolve reef wake eddies. This study models variation in larval retention times for a range of reef shapes and circulation regimes, using a reef-scale three-dimensional hydrodynamic model. It also explores how well larval retention time can be estimated based on the "Island Wake Parameter", a measure of the degree of flow turbulence in the wake of reefs that is a simple function of flow speed, reef dimension, and vertical diffusion. The mean residence times found in the present study (0.48-5.64 days) indicate substantial potential for self-recruitment of species whose larvae are passive, or weak swimmers, for the first several days after release. Results also reveal strong and significant relationships between the Island Wake Parameter and mean residence time, explaining 81-92% of the variability in retention among reefs across a range of unidirectional flow speeds and tidal regimes. These findings suggest that good estimates of larval retention may be obtained from relatively coarse-scale characteristics of the flow, and basic features of reef geomorphology. Such approximations may be a valuable tool for modeling connectivity and meta-population dynamics over large spatial scales, where explicitly characterizing fine-scale flows around reef requires a prohibitive amount of computation and extensive model calibration.

Cetina-Heredia, Paulina; Connolly, Sean R.

2011-09-01

182

Student Selection and Retention in Nursing Schools. Health Manpower References.  

ERIC Educational Resources Information Center

|In order to provide all eligible nursing school applicants with equal access to careers in professional nursing and to assure an adequate supply of professional nurses, a study was conducted to identify factors that contribute to the successful recruitment, selection, and retention of students by nursing schools. A questionnaire was sent to all…

National League for Nursing, New York, NY.

183

Improving the Retention of Students from Lower Socioeconomic Groups  

Microsoft Academic Search

Success in higher education for students from lower socio-economic groups and from disadvantaged backgrounds is becoming an increasingly important policy goal in the UK and abroad. An analysis of the HEFCE performance indicators identified six English higher education institutions performing above their benchmarks with regard to widening participation and also student retention and completion, and prompted an investigation of what

Mantz Yorke; Liz Thomas

2003-01-01

184

Impact of active learner involvement on achievement and retention  

Microsoft Academic Search

The focus of this study was to look at three instructional strategies, worked-out examples, fading, and underlining, and to identify if one method resulted in better achievement and retention when learning computer logic. To account for learner variances, selected learner characteristics were also captured. The learner information collected consisted of age, gender, GPA, academic year, academic major, and learning style.

Wendy Norfleet

2008-01-01

185

Student Selection and Retention in Nursing Schools. Health Manpower References.  

ERIC Educational Resources Information Center

In order to provide all eligible nursing school applicants with equal access to careers in professional nursing and to assure an adequate supply of professional nurses, a study was conducted to identify factors that contribute to the successful recruitment, selection, and retention of students by nursing schools. A questionnaire was sent to all…

National League for Nursing, New York, NY.

186

Social Promotion or Retention? Factors That Influence Committee Decision  

ERIC Educational Resources Information Center

The purpose of the research presented here is to identify which factors school level practitioners consider in deciding whether to retain or promote a student and to ascertain their knowledge of and training in retention research. This research illuminates the process of determining which students are promoted and which are retained, and the…

Groom, Ileetha Brooks

2010-01-01

187

Urban Secondary Educators' Views of Teacher Recruitment and Retention  

Microsoft Academic Search

This inquiry is directed at understanding the factors related to recruitment and retention of urban secondary teachers. Data were collected via selected response questionnaires from 815 public high school teachers in a large Midwest city. The findings provide implications for urban centers in the U.S. educational system from the classroom teacher's perspective, by identifying the qualities associated with the best

Kelly D. Bradley; William E. Loadman

2005-01-01

188

RESEARCH AND PRACTICE OF STUDENT RETENTION: WHAT NEXT?  

Microsoft Academic Search

After reviewing the state of student retention research and practice, past and present, the author looks to the future and identifies three areas of research and practice that call for further exploration. These concern issues of institutional action, program implementation, and the continuing challenge of promoting the success of low-income students.

VINCENT TINTO

2007-01-01

189

VOCATIONAL CAREER TESTING CONTRIBUTES TO STUDENT RETENTION IN HOSPITALITY PROGRAMS  

Microsoft Academic Search

This paper documents the successful use of The Self-Directed Search to improve student retention in a hospitality school. This vocational\\/career test helps students to identify their talents and interests and to match them to hospitality job positions which require the same type of personality qualities as they have. This paper is based on five years of data collection and analysis

Madonna M. Murphy

1990-01-01

190

Social Promotion or Retention? Factors That Influence Committee Decision  

ERIC Educational Resources Information Center

|The purpose of the research presented here is to identify which factors school level practitioners consider in deciding whether to retain or promote a student and to ascertain their knowledge of and training in retention research. This research illuminates the process of determining which students are promoted and which are retained, and the…

Groom, Ileetha Brooks

2010-01-01

191

Integration of high-resolution array comparative genomic hybridization analysis of chromosome 16q with expression array data refines common regions of loss at 16q23–qter and identifies underlying candidate tumor suppressor genes in prostate cancer  

Microsoft Academic Search

We have constructed a high-resolution genomic microarray of human chromosome 16q, and used it for comparative genomic hybridization analysis of 16 prostate tumors. We demarcated 10 regions of genomic loss between 16q23.1 and 16qter that occurred in five or more samples. Mining expression array data from four independent studies allowed us to identify 11 genes that were frequently underexpressed in

J E Vivienne Watson; Norman A Doggett; Donna G Albertson; Armann Andaya; Arul Chinnaiyan; Herman van Dekken; David Ginzinger; Christopher Haqq; Karen James; Sherwin Kamkar; David Kowbel; Daniel Pinkel; Lars Schmitt; Jeffry P Simko; Stanislav Volik; Vivian K Weinberg; Pamela L Paris; Colin Collins; JE Vivienne Watson

2004-01-01

192

Meeting Individual Needs Fosters Retention.  

ERIC Educational Resources Information Center

|A 1991 study of non-returning students at Del Mar College (DMC), in Corpus Christi, Texas, revealed that only 37.9% of these students were actual dropouts (i.e., had failed to accomplish their educational goals, and had no plans to take up further study). Retention studies conducted in Texas between 1985 and 1989 have shown that DMC has…

Artman, Johanne I.; Gore, Robert C.

193

Enhancing student retention and employability  

Microsoft Academic Search

Retention of first year students in the Faculty of Engineering is a significant problem. There appears to be a pattern of loss of students early in Semester 1 with students failing to engage with their program of learning and again in Semester 2 after the publication of results of the January exam diet. This project aimed to address these problems

D. Ballance; A. Browitt; J. Davies; J. Pritchard; S. Roy; W. Stewart; M. Vezza; L. Walker; A. Whittaker

194

JCC Recruitment, Retention, Attrition Project.  

ERIC Educational Resources Information Center

|In an effort to reduce the class attrition rate of 40% at Jefferson Community College (JCC), and to investigate the entire process of recruitment, retention, and attrition (RRA), a series of four faculty workshops were held. The plan was to look at the RRA process from the student's point of view in terms of four phases: (1) the pre-enrollment…

Horvath, Ronald J.

195

Improving Hunter Recruitment and Retention  

Microsoft Academic Search

Current trends show that despite overall support for hunting, fewer Americans are participating in the activity. Traditional recruitment and retention methods in which hunting families initiate, train, and socialize their children or other family members into hunting tradition are still the primary routes to recruiting and retaining new hunters. With declining numbers of hunters, however, this approach alone will not

Elizabeth L. Ryan; Bret Shaw

2011-01-01

196

Standards, Retention, and Social Promotion.  

ERIC Educational Resources Information Center

Describes origin and elements of the standards movement. Reviews research on grade retention and social promotion and concludes that both are failed strategies to improve student achievement. Describes principal's role in meeting standards. Discusses the use of systemic and classroom interventions to help students meet state standards. (Contains…

Owings, William A.; Kaplan, Leslie S.

2001-01-01

197

Institutionalization of a Retention Model  

NASA Astrophysics Data System (ADS)

Bowie State University and NASA Goddard Space Flight Center have, for the past 10 years, worked diligently together to enhance the science, mathematics, engineering and technology (SMET) domain. Efforts made, because of a Model Institutions for Excellence (MIE) Award, have changed the landscape of the SMET domain by increasing the retention and graduation rates, the number of students entering graduate and professional schools, and the number of students entering SMET related careers for minorities and women. Several initiatives a Scholarship Program, PRISEM Tutoring Center, Safety-net Program, Research emphasis, Focused Mentoring, a Summer Academy for accepted incoming students, a Bridge Program for students needing assistance being admitted to the University, the RISE Program and the Bowie State Satellite Operations and Control Center (BSOCC) provide the nurturing, mentoring, and opportunities for our students. As a result of efforts made, the retention rate has increase to approximately 80%, the graduation rate has increased 40%, and 85% of the SMET students are now interested or entering graduate and professional schools. Successes that have been documented by various assessment activities have led to the institutionalization of the Retention Model of the MIE Initiative. It is anticipated that University-wide application of the retention model will prove the incentives necessary to obtain similar results as the MIE Initiative.

Davis, E. J.; Campbell, A.

2006-05-01

198

Educational Advising for Student Retention.  

ERIC Educational Resources Information Center

Drawing from the literature and research on educational advising and student retention, this handbook provides practical guidelines on advising students, based on five propositions. The propositions are that: (1) educational advisement should be designed to provide accurate, consistent, accessible information for students concerning their progress…

Santa Rita, Emilio

199

Meeting Individual Needs Fosters Retention.  

ERIC Educational Resources Information Center

A 1991 study of non-returning students at Del Mar College (DMC), in Corpus Christi, Texas, revealed that only 37.9% of these students were actual dropouts (i.e., had failed to accomplish their educational goals, and had no plans to take up further study). Retention studies conducted in Texas between 1985 and 1989 have shown that DMC has…

Artman, Johanne I.; Gore, Robert C.

200

Identify Symmetry  

NSDL National Science Digital Library

This unit will teach you how to identify symmetry in everyday objects and mathematical shapes in lines and rotational symmetry. What is line symmetry? Click on the link to find out: Line Symmetry Here is a line activity to see if you understand it: Line Symmetry Class Zone See if you understand the concepts by doing the following quiz: Line Symmetry Work Now for rotational symmetry: Rotational Symmetry See if you understand rotational symmetry by taking this quiz: Rotational Symmetry Work ...

Neubert, Mrs.

2011-03-03

201

Identifying Erosion  

NSDL National Science Digital Library

In this environmental science activity (page 3 of the PDF), leaners will identify and explain the causes of erosion. They will observe the effects of erosion on the surrounding area and further explore examples of erosion online. An extension activity allows learners to make a hands-on model of soil erosion. Though this was created as a pre-visit activity for a workshop about water flow and erosion, it makes a great stand-alone activity as well!

Cosi

2009-01-01

202

Measurement errors of water retention curve using pressure plates: consequences on parameterization  

NASA Astrophysics Data System (ADS)

Pressure plates are very common experimental devices to measure the soil water retention curve. However, recent studies have demonstrated the lack of reliability of pressure plates when measuring the soil water retention curve in the dry range, due to low plate and soil conductance, lack of soil-plate contact and soil dispersion. In a recent investigation on a silt loam soil, water retention data were determined using pressure plates only and a combination of pressure plates and a dew point meter, showing errors in the measurement of the soil water retention curve at potentials less than 20 m-H2O. This error led to unreliable evaluation of soil hydraulic properties and their parameterization. We extended the investigation on the effects of water retention measurement error to eighteen soils having different textural properties, by comparing measurements of soil water retention curves obtained with a combination of Stackman's beds and pressure plates and soil water retention curves obtained with the chilled-mirror dew point technique. The aim of this research was to investigate the differences between the soil water retention curves as function of different soil textural properties and their effect of soil hydraulic properties and water drainage. Comparison between retention curves and fitting van Genuchten parameters, showed an error in measurements made by the combination Stackman's beds and Richards' pressure plates, for potential values below 1 m-H2O to 57 m-H2O. By characterizing textural properties by using geometric mean diameters, a clear relationship between texture and errors in water retention was established. In particular coarser soil displayed errors at lower potential (in absolute value) with respect to finer textures. The occurrence of these errors in the water retention measurement performed with pressure plates showed that it is advisable to use a combination of methodologies to correctly measure an entire soil retention curve and current parameters database should be used with caution.

Bittelli, M.; Solone, R.

2012-04-01

203

Managing faecal retention and incontinence in neurodisability.  

PubMed

The large number of patients with faecal retention and/or incontinence in continuing care wards and rehabilitation units presents a considerable challenge. In order to maintain dignity and minimize the unpleasant odour so commonly associated with these wards and units, effective bowel management should be planned for individual patients. For an effective bowel management regime a team approach should be adopted, involving, where possible, the patient and carer as well as all the health professionals administering the care. Two case studies illustrate the use of assessment and management of bowel problems in patients with severe complex neurodisability. Bowel dysfunction in this patient population, in general, is poorly covered in the literature. The present article, by relating theory to practice, offers information and guidance for nurses working with patients who have bowel-related problems. PMID:12066032

Pierce, E; Cowan, P; Stokes, M

204

9 CFR 354.73 - Retention labels.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Retention labels. 354.73 Section 354.73 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE...Packaging § 354.73 Retention labels. An inspector may use such labels, devices, and methods...

2013-01-01

205

Retention of minority participants in clinical research studies.  

PubMed

Recruitment of minority participants for clinical research studies has been the topic of several analytical works. Yet retention of participants, most notably minority and underserved populations, is less reported and understood, even though these populations have elevated health risks. This article describes two related, intervention-based formative research projects in which researchers used treatment theory to address issues of recruitment and retention of minority women participants in an exercise program to reduce obesity. Treatment theory incorporates a model of health promotion that allows investigators to identify and control sources of extraneous variables. The authors' research demonstrates that treatment theory can improve retention of minority women participants by considering critical inputs, mediating processes, and substantive participant characteristics in intervention design. PMID:15781904

Keller, Colleen S; Gonzales, Adelita; Fleuriet, K Jill

2005-04-01

206

A Whole-Genome Single Nucleotide Polymorphism-Based Approach To Trace and Identify Outbreaks Linked to a Common Salmonella enterica subsp. enterica Serovar Montevideo Pulsed-Field Gel Electrophoresis Type?†  

PubMed Central

In this study, we report a whole-genome single nucleotide polymorphism (SNP)-based evolutionary approach to study the epidemiology of a multistate outbreak of Salmonella enterica subsp. enterica serovar Montevideo. This outbreak included 272 cases that occurred in 44 states between July 2009 and April 2010. A case-control study linked the consumption of salami made with contaminated black and red pepper to the outbreak. We sequenced, on the SOLiD System, 47 isolates with XbaI PFGE pattern JIXX01.0011, a common pulsed-field gel electrophoresis (PFGE) pattern associated with isolates from the outbreak. These isolates represented 20 isolates collected from human sources during the period of the outbreak and 27 control isolates collected from human, food, animal, and environmental sources before the outbreak. Based on 253 high-confidence SNPs, we were able to reconstruct a tip-dated molecular clock phylogeny of the isolates and to assign four human isolates to the actual outbreak. We developed an SNP typing assay to rapidly discriminate between outbreak-related cases and non-outbreak-related cases and tested this assay on an extended panel of 112 isolates. These results suggest that only a very small percentage of the human isolates with the outbreak PFGE pattern and obtained during the outbreak period could be attributed to the actual pepper-related outbreak (20%), while the majority (80%) of the putative cases represented background cases. This study demonstrates that next-generation-based SNP typing provides the resolution and accuracy needed for outbreak investigations of food-borne pathogens that cannot be distinguished by currently used subtyping methods.

den Bakker, Henk C.; Moreno Switt, Andrea I.; Cummings, Craig A.; Hoelzer, Karin; Degoricija, Lovorka; Rodriguez-Rivera, Lorraine D.; Wright, Emily M.; Fang, Rixun; Davis, Margaret; Root, Tim; Schoonmaker-Bopp, Dianna; Musser, Kimberlee A.; Villamil, Elizabeth; Waechter, HaeNa; Kornstein, Laura; Furtado, Manohar R.; Wiedmann, Martin

2011-01-01

207

Reframing Retention Strategy: A Focus on Progress  

ERIC Educational Resources Information Center

|Few words have dominated the vocabulary of college retention as has the word "persistence." Many institutions still struggle to engage faculty and administrators in building campuswide retention efforts, to find the organizational levers that translate the abstractions and complexities of retention theory into scalable and durable initiatives,…

Spittle, Brian

2013-01-01

208

Reframing Retention Strategy: A Focus on Profile  

ERIC Educational Resources Information Center

|Over 35 years of retention theory and literature have acknowledged the importance of institutional and student profiles in accounting for cross-sectional differences in retention and completion rates between types of colleges and universities. The first "P" within a 4 Ps framework of student retention--"profile"--recognizes that an institution's…

Kalsbeek, David H.; Zucker, Brian

2013-01-01

209

Toward a perspective on orthodontic retention?  

Microsoft Academic Search

Retention is one of the most difficult challenges facing the clinician in orthodontics. In this article we collate current knowledge regarding the origin of orthodontic relapse and attempt to rationalize the necessary factors in planning orthodontic retention. Despite extensive research, the various elements leading to relapse of treated malocclusions are incompletely understood, giving rise to wide variation in retention protocols

Colin Melrose; Declan T. Millett

1998-01-01

210

Effective Retention Strategies for Engineering Students  

Microsoft Academic Search

Engineering Programs in the US have been working to improve retention rates of students for many years. Today universities in Europe and other countries are becoming increasingly interested in improving retention and student success. Improving retention rates is especially important in order to increase the nu mber of students who obtain engineering degrees. Many of t he programs developed in

Kerri A. Sleeman; Sheryl A. Sorby

211

Reframing Retention Strategy: A Focus on Progress  

ERIC Educational Resources Information Center

Few words have dominated the vocabulary of college retention as has the word "persistence." Many institutions still struggle to engage faculty and administrators in building campuswide retention efforts, to find the organizational levers that translate the abstractions and complexities of retention theory into scalable and durable initiatives, and…

Spittle, Brian

2013-01-01

212

Designing Online Courses to Promote Student Retention  

ERIC Educational Resources Information Center

|Although the issue of student retention is a campus-wide one, it is of special interest in online distance learning courses, where retention rates are reported to be lower than in face-to-face classes. Among the explanations and theories of retention rates in online courses, one that struck us as most useful is a structural one, namely, course…

Dietz-Uhler, Beth; Fisher, Amy; Han, Andrea

2008-01-01

213

Evaluating freshmen retention efforts in engineering housing  

Microsoft Academic Search

Freshman engineering retention is a national problem. At Arizona State University, freshmen retention is a major focus of the Office of Student Affairs in the College of Engineering and Applied Sciences (CEAS). The CEAS Fall 2000 freshmen class numbered 969 students. Major programs that have been developed to increase CEAS freshmen retention include engineering residence hall floors and academic and

Mary R. Anderson-Rowland; Joseph E. Urban

2001-01-01

214

Do We Have a Retention Problem ... Or Do We Have a Problem "about" Retention?  

ERIC Educational Resources Information Center

This paper deals with the "problem" of student retention in higher education. But unlike most, this paper focuses not on the problem of retention "per se" but rather on how institutional leaders think about student retention, completion, and success--how the way they frame their concerns about retention can give rise to a different sort of…

Butler, Lawrence

2011-01-01

215

Comparison of Vif sequences from diverse geographical isolates of HIV type 1 and SIV(cpz) identifies substitutions common to subtype C isolates and extensive variation in a proposed nuclear transport inhibition signal.  

PubMed

We compared the Vif sequences from more than 100 group M and O strains of HIV-1 isolated from diverse geographical regions and various subtypes, in order to identify regions of high variability and those amino acid residues that were highly conserved or invariant. Our analysis found that there were 10 highly conserved domains with additional invariant residues located throughout the protein. Our analysis revealed that in the highly conserved amino-terminal domain, all subtype C isolates examined had a methionine-to-leucine substitution at position 8 and most subtype C isolates had an arginine-to-lysine substitution at position 17 of the protein. Our analysis revealed that the MAP kinase phosphorylation sites, and the cysteine residues at positions 114 and 133, were conserved in Vif sequences from group M, group O, and SIV cpz isolates. Our analysis also shows that the RKKR motif at positions 90--93, proposed as a nuclear transport inhibition signal (NTIS), was conserved neither in different geographical group M and O HIV-1 isolates nor in SIVcpz. PMID:11177396

Stephens, E B; Singh, D K; Pacyniak, E; McCormick, C

2001-01-20

216

Identifying Species  

NSDL National Science Digital Library

This two part activity will allow students to investigate biological diversity in the area of their school. They will first prepare a taxonomic key to distinguish between the four insects or spiders that they have selected. All of the keys are combined and students then perform a transect study of a neighborhood field or school playing ground. Finally as a class students will compile a list of the animals and plants that are found within a mile of their school. They may need to use field guides, local resources, taxonomic keys, and species lists to help identify these organisms. Once they have compiled their list they will organize the species into the taxonomic groups they have studied.

Dispezio, Michael

217

Modeling colloid transport and retention in saturated porous media under unfavorable attachment conditions  

Microsoft Academic Search

A mathematical model is developed to describe colloid transport and retentionTheory is presented to improve prediction of model parametersThe model helps to identify areas where additional research is needed

Scott A. Bradford; Saeed Torkzaban; Jiri Simunek

2011-01-01

218

Breastfeeding reduces postpartum weight retention1-4  

Microsoft Academic Search

Background: Weight gained during pregnancy and not lost post- partum may contribute to obesity in women of childbearing age. Objective: We aimed to determine whether breastfeeding reduces postpartum weight retention (PPWR) in a population among which full breastfeeding is common and breastfeeding duration is long. Design:WeselectedwomenfromtheDanishNationalBirthCohort whoeverbreastfed(98%),andweconductedtheinterviewsat6(n 36 030) and 18 (n 26 846) mo postpartum. We used regression analyses

Jennifer L Baker; Michael Gamborg; Berit L Heitmann; Lauren Lissner; Thorkild IA Sørensen; Kathleen M Rasmussen

219

Platelet retention in columns packed with glass beads  

Microsoft Academic Search

Platelet retention in columns packed with glass beads has been theoretically analyzed in a manner similar to that commonly\\u000a used to describe the behavior of fixed-bed adsorbers. Combining the results of this analysis with experimental observations\\u000a has confirmed that the process of platelet deposition from whole blood onto glass bead surfaces is entirely adsorption controlled.\\u000a In contrast to this finding,

Channing R. Robertson; Ho Nam Chang

1974-01-01

220

Protein C Mutation (A267T) Results in ER Retention and Unfolded Protein Response Activation  

PubMed Central

Background Protein C (PC) deficiency is associated with a high risk of venous thrombosis. Recently, we identified the PC-A267T mutation in a patient with PC deficiency and revealed by in vitro studies decreased intracellular and secreted levels of the mutant. The aim of the present study was to characterize the underlying mechanism(s). Methodology/Principal Findings CHO-K1 cells stably expressing the wild-type (PC-wt) or the PC mutant were generated. In order to examine whether the PC mutant was subjected to increased intracellular degradation, the cells were treated with several inhibitors of various degradation pathways and pulse-chase experiments were performed. Protein-chaperone complexes were analyzed by treating the cells with a cross-linker followed by Western blotting (WB). Expression levels of the immunoglobulin-binding protein (BiP) and the phosphorylated eukaryotic initiation factor 2? (P-eIF2?), both common ER stress markers, were determined by WB to examine if the mutation induced ER stress and unfolded protein response (UPR) activation. We found no major differences in the intracellular degradation between the PC variants. The PC mutant was retained in the endoplasmic reticulum (ER) and had increased association with the Grp-94 and calreticulin chaperones. Retention of the PC-A267T in ER resulted in UPR activation demonstrated by increased expression levels of the ER stress markers BiP and P-eIF2? and caused also increased apoptotic activity in CHO-K1 cells as evidenced by elevated levels of DNA fragmentation. Conclusions/Significance The reduced intracellular level and impaired secretion of the PC mutant were due to retention in ER. In contrast to other PC mutations, retention of the PC-A267T in ER resulted in minor increased proteasomal degradation, rather it induced ER stress, UPR activation and apoptosis.

Tjeldhorn, Lena; Iversen, Nina; Sandvig, Kirsten; Bergan, Jonas; Sandset, Per Morten; Skretting, Grethe

2011-01-01

221

Bioassay data and a retention-excretion model for systemic plutonium  

SciTech Connect

The estimation of systemic burdens from urinalyses has been the most common and useful method of quantifying occupational exposures to plutonium. Problems arise in using this technique, however, because of inadequate modeling of human retention, translocation, and excretion of this element. Present methods for estimating the systemic burden from urinalyses were derived to a large extent from patterns observed in the first few months after exposure, but there is now evidence that these same patterns do not persist over long periods. In this report we collect and discuss data needed for the interpretation of bioassay results for Pu. These data are used to develop a model that describes the movement, retention, and excretion of systemic Pu in the human body in terms of explicitly identified anatomical compartments. This model may be used in conjunction with existing models and/or case-specific information concerning the translocation of Pu from the respiratory or gastrointestinal tract or from wounds to the bloodstream. Attention is restricted to the behavior of Pu after it has gained access to the bloodstream. There remain significant uncertainties concerning some aspects of the movement of Pu, particularly its translocation from the liver. An attempt has been made to construct the model in such a way as to elucidate those areas needing further attention. 98 references, 18 figures, 16 tables.

Leggett, R.W.

1984-05-01

222

Control of Gut Retention Time by Secondary Metabolites in Ripe Solanum Fruits  

Microsoft Academic Search

We tested whether compounds in ripe Solanum americanumfruits affect gut retention time of S. americanum seeds in Cedar Waxwings (Bombycilla cedrorum). Gly- coalkaloids were of special interest because they commonly occur in ripe Solanum fruits and are associated with diarrhea in humans. Also, we determined the influence of gut retention time and the presence\\/absence of two glycoalkaloids, a-solasonine and a-sola-

Sofia A. Wahaj; Douglas J. Levey; Anna K. Sanders; Martin L. Cipollini

1998-01-01

223

Prevention of urinary retention after general surgery: a controlled trial of carbachol\\/diazepam versus alfusozine  

Microsoft Academic Search

Background:Postoperative urinary retention is a common complication after surgical procedures. It can cause bladder dilatation, infection, and even sepsis. Carbachol\\/diazepam and alfusozine have been reported to lower the incidence of postoperative urinary retention, but no study showed the benefits of these drugs in a randomized, placebo-controlled trial.Study Design:We used a double blind, placebo-controlled trial in which 249 patients with postoperative

Desiree H. C Burger; A. Pieter Kappetein; Herman Boutkan; Paul J Breslau

1997-01-01

224

Stability of Balloon-Retention Gastrostomy Tubes with Different Concentrations of Contrast Material: In Vitro Study  

Microsoft Academic Search

The purpose of this study was to determine the performance of two balloon-retention-type gastrostomy tubes when the balloons\\u000a are inflated with two types of contrast materials at different concentrations. Two commonly used balloon-retention-type tubes\\u000a (MIC and Tri-Funnel) were inflated to the manufacturer’s recommended volumes (4 and 20 cm3, respectively) with normal saline or normal saline plus different concentrations of contrast material.

Jorge E. Lopera; Alex Alvarez; Clayton Trimmer; Shellie Josephs; Matthew Anderson; Bart Dolmatch

2009-01-01

225

Predicting relative permeability from water retention: A direct approach based on fractal geometry  

Microsoft Academic Search

Commonly, a soil's relative permeability curve is predicted from its measured water retention curve by fitting equations that share parameters between the two curves (e.g., Brooks\\/Corey-Mualem and van Genuchten-Mualem). We present a new approach to predict relative permeability by direct application of measured soil water retention data without any fitting procedures. The new relative permeability model, derived from a probabilistic

Abdullah Cihan; John S. Tyner; Edmund Perfect

2009-01-01

226

Cucurbit leaf crumple virus Identified in Common Bean in Florida  

Technology Transfer Automated Retrieval System (TEKTRAN)

Detection of Cucurbit leaf crumple virus in green beans in Florida suggests that this virus may be more widely distributed than previously known in the state and that green bean (and potentially other legumes) are potential reservoirs for Cucurbit leaf crumple virus....

227

Deuterium Retention in Liquid Lithium  

NASA Astrophysics Data System (ADS)

Flowing liquid Li as a plasma-facing material in a tokamak offers potential advantages over solid materials. The high-thermal conductivity of Li allows heat loads to be effectively removed and erosion lifetime is no longer a significant concern as a flowing liquid surface is self-repairing. In addition to this, it has also been demonstrated that lithium surfaces are effective in providing low-recycling boundaries. Oxygen, carbon and hydrogen are readily gettered by lithium and it is expected that fuel control should also be possible though the retention of deuterium. However, it is not clear that Li, in its liquid state, offers the same low-recycling properties. As part of the liquid-metals research effort being undertaken at the UCSD, we are examining the practicality of fuel control through studies of the retention of deuterium in liquid Li. Samples of solid and liquid Li have been exposed to deuterium plasma in the UCSD PISCES B linear plasma facility and characterized using secondary-ion mass spectrometry (SIMS), x-ray-photoelectron spectroscopy (XPS) and thermal-desorption mass spectrometry (TDS). Results will be presented and discussed at the meeting.

Baldwin, M. J.; Doerner, R. P.; Luckhardt, S. C.; Conn, R. W.; Seraydarian, R.; Whyte, D. G.

2000-10-01

228

QSAR in Chromatography: Quantitative Structure-Retention Relationships (QSRRs)  

NASA Astrophysics Data System (ADS)

To predict a given physicochemical or biological property, the relationships can be identified between the chemical structure and the desired property. Ideally these relationships should be described in reliable quantitative terms. To obtain statistically significant relationships, one needs relatively large series of property parameters. Chromatography is a unique method which can provide a great amount of quantitatively precise, reproducible, and comparable retention data for large sets of structurally diversified compounds (analytes). On the other hand, chemometrics is recognized as a valuable tool for accomplishing a variety of tasks in a chromatography laboratory. Chemometrics facilitates the interpretation of large sets of complex chromatographic and structural data. Among various chemometric methods, multiple regression analysis is most often performed to process retention data and to extract chemical information on analytes. And the methodology of quantitative structure-(chromatographic) retention relationships (QSRRs) is mainly based on multiple regression analysis. QSRR can be a valuable source of knowledge on both the nature of analytes and of the macromolecules forming the stationary phases. Therefore, quantitative structure-retention relationships have been considered as a model approach to establish strategy and methods of property predictions.

Kaliszan, Roman; B?czek, Tomasz

229

Organ retention and return: problems of consent  

PubMed Central

This paper explores difficulties around consent in the context of organ retention and return. It addresses the proposals of the Independent Review Group in Scotland on the Retention of Organs at Post Mortem to speak of authorisation rather than consent. Practical problems about whose consent determines disputes in relation to organ retention are explored. If a young child dies and his mother refuses consent but his father agrees what should ensue? Should the expressed wishes of a deceased adult override the objections of surviving relatives? The paper suggests much broader understanding of the issues embedded in organ retention is needed to provide solutions which truly meet families' and society's needs.

Brazier, M

2003-01-01

230

Planned cesarean delivery and urinary retention associated with spinal morphine.  

PubMed

Cesarean delivery (CD) is the second most commonly performed surgery in the United States. As such, prevention of complications associated with this procedure is a top priority in nursing care. Nurses at the study institution perceived that postcesarean patients experienced increased urinary retention after use of spinal morphine for postoperative pain relief. This observation prompted a review of the literature indicating that limited research had been conducted in this area. The purpose of this study was to explore the relationship of postelective CD urinary retention and dose of spinal morphine. A retrospective, quasi-experimental, three-group design was used. Records of 150 patients, ages 17 to 39, undergoing elective primary or repeat CD were examined. Morphine doses included 100, 150, and 200 mcg. No statistically significant differences were found between the three groups. PMID:23711308

DiBlasi, Susan M

2013-06-01

231

Retention and success of culturally diverse nursing students.  

PubMed

One of the major issues facing the future of the nursing profession is to increase the ethnic diversity of the nursing workforce (Institute of Medicine, 2010). The United States population is quickly becoming a nation of minorities (Sullivan Commission, 2004) and the nursing population must adapt in order to provide high quality, culturally competent care. Oklahoma's most recent population statistics indicate a dire need to focus on increasing the Black, Hispanic, and multiracial registered nurse populations. Nursing programs are challenged with this recommendation because culturally diverse students have lower retention rates and higher academic failure rates than Caucasian students. The purpose of this systematic review was to describe common barriers for culturally diverse nursing students and discover best practices to promote retention and success. The findings may be used to encourage further development of beneficial practices and programs within Oklahoma, as well as stimulate additional nursing research on cultural diversity. PMID:24049982

Duerksen, Jennifer L

232

A Hong Kong perspective on ways to improve nurse retention.  

PubMed

Nursing shortages are an international issue and are particularly evident in perioperative care, critical care and emergency services. The solution commonly adopted to tackle this problem is to increase the recruitment of nurses to replace the loss, whereas efforts to try and retain existing staff have only sporadically been mentioned. Furthermore, while retention programmes have occasionally received attention from some nursing scholars, they often fail to investigate the real needs of nurses. This article discusses three practical solutions adopted in Hong Kong, which could potentially alleviate difficulties with staff retention. It is hoped that the collaborative efforts of different professionals and nursing scholars will help to solve nursing shortages in the foreseeable future. PMID:20509381

Chan, Zenobia C Y; Lai, Wing-Fu

233

Factors affecting the retention of first-year female science and engineering students at the University of Michigan  

NASA Astrophysics Data System (ADS)

Alarming to many academics is that while the numbers of female students (at the University of Michigan in particular) in SEM (Science, Engineering, and Mathematics) departments have shown increases in enrollment over the past decades, the number of female professionals in the field has decreased. The purpose of the study was to determine the environmental perceptions of female SEM students in the Women in Science and Engineering (WISE) Program at the University of Michigan. The WISE-RP (Residence Program) is an existing living and learning education program at the university that was designed to facilitate the successful retention and graduation of undergraduate female SEM students in the capacity that the admissions statistics should logically imply. The objectives of the study included identification of the perceptions of female students that contribute to, and foster retention of students participating in the WISE-RP program. The knowledge obtained from this evaluation will guide the University of Michigan in formulating specific interventions and retention approaches, both in and out of the classroom. This was achieved by identifying (among other things) commonality of experiences, and female student's perceptions of acceptance, integration and interactivity. The data used in this secondary analysis was collected over a 2 year period (1999--2001). The primary instrument used for data collection was a structured interview protocol utilizing focus groups. The population and samples studied were comprised of: a research project consisting of 36 focus groups from WISE-RP, University Research Opportunity Program, and the University Research Opportunity in Residence Programs; the sample size of the initial project was 180 first year SEM male and female students. The research project consisted of working with a senior research team at the University of Michigan to develop a structured interview instrument, pilot the instrument, and select focus groups. Content analysis was conducted on the open-ended focus group questions. Three themes emerged from the data set: (a) general contributing factors to retention, (b) support networks and programmatic features that contributed to retention, (c) individual/gender specific challenges that students faced. It found that the initial mission of the program has been accomplished, as evidenced by the findings of this study. The University is graduating and retaining female SEM students at a higher rate than at the program's inception. The challenges for the University at this point include: increasing numbers of female SEM faculty, enhancing and focusing the living learning community mission of the program, integrating student affairs components to the program features on an administrative level, committing to longitudinal analysis and assessment of individual incoming students toward identifying strengths and weaknesses, and finally---committing increased resources to these objectives.

Ballard, Juliet Webb

234

Recruitment and retention of Alaska natives into nursing: elements enabling educational success.  

PubMed

In response to the underrepresentation of Alaska Native/American Indian nurses, nursing programs have implemented recruitment and retention efforts to support undergraduate Alaska Native/American Indian nursing students. The objective of this project was to provide graduates from the Recruitment and Retention of Alaska Natives into Nursing (RRANN) program the opportunity to identify program elements important to achieving academic success, levels of satisfaction, and make recommendations for future program direction. Findings suggest RRANN graduates viewed the program as vital to academic success. Recommendations include utilizing former graduates in recruitment and retention efforts, as mentors, and extending the program to benefit graduate students. PMID:23155892

Rearden, Annette K

2012-01-01

235

Adult Student Retention: A Practical Approach to Retention Improvement through Learning Enhancement  

ERIC Educational Resources Information Center

|Adult student retention is an issue of growing concern for many institutions. It differs from traditional retention much like traditional students differ from adult students. As the majority of student body growth comes from adult students, adult student retention management will become critical to the majority of colleges and universities. To…

Fincher, Mark

2010-01-01

236

Adult Student Retention: A Practical Approach to Retention Improvement through Learning Enhancement  

ERIC Educational Resources Information Center

Adult student retention is an issue of growing concern for many institutions. It differs from traditional retention much like traditional students differ from adult students. As the majority of student body growth comes from adult students, adult student retention management will become critical to the majority of colleges and universities. To…

Fincher, Mark

2010-01-01

237

Adult Student Retention: A Practical Approach to Retention Improvement Through Learning Enhancement  

Microsoft Academic Search

Adult student retention is an issue of growing concern for many institutions. It differs from traditional retention much like traditional students differ from adult students. As the majority of student body growth comes from adult students, adult student retention management will become critical to the majority of colleges and universities. To support this end, this article explores the forces producing

Mark Fincher

2010-01-01

238

Workforce Issues--Rural Illinois Hospital Chief Executive Officers' Perceptions of Provider Shortages and Issues in Rural Recruitment and Retention  

ERIC Educational Resources Information Center

|Background: It is important to assess rural health professions workforce needs and identify variables in recruitment and retention of rural health professionals. Purpose: This study examined the perspectives of rural hospital chief executive officers (CEOs) regarding workforce needs and their views of factors in the recruitment and retention

Glasser, Michael; Peters, Karen; MacDowell, Martin

2006-01-01

239

How work environment impacts retention.  

PubMed

Work environment is a major aspect of the day-to-day grind that drives the retention (or turnover) of RNs. When opportunities abound, it is easy to jump ship, and when turnover begins, it is usually the best and brightest who are first to depart. Recent research reported a whopping 27.1% average voluntary turnover rate among new graduate nurses during their first year of employment. Aging of the nurse workforce may be the largest factor impacting health care work environments, as employers struggle to diminish the physical effect of lifting thousands of pounds and walking several miles during each shift. Every influence on the work environment (management, peer behavior, patient acuity, equipment availability, the physical plant) should be assessed for impact on the workforce. While we cannot hope to create paradise in each work setting, we can promote an environment that is healing both to patient and to caregiver. PMID:18979696

Christmas, Kate

240

Uptake and retention of amitriptyline by kaolinite.  

PubMed

As the most commonly prescribed tricyclic antidepressant, amitriptyline (AT) is frequently detected in wastewater, surface runoff, and effluents from sewage treatment plants, and could potentially reach agriculture land through the application of municipal biosolids or reclaimed water. Kaolinite is one of the most important soil components under warm and humid climate conditions. In this study, the uptake and retention of AT by kaolinite from aqueous solution were investigated by batch tests, XRD, and FTIR analyses. The uptake of AT on kaolinite was instantaneous, attributed to surface adsorption as confirmed by XRD analyses. Quantitative correlation between desorption of exchangeable cations and AT adsorption confirmed experimentally that cation exchange was the dominant mechanism of AT uptake on kaolinite. The values for free energy of adsorption also suggested physi-sorption such as cation exchange. Solution pH had minimal influence at pH 5-11 even though the pKa value of AT was 9.4 and the surface charge of kaolinite was pH-dependent. PMID:24041550

Lv, Guocheng; Stockwell, Christie; Niles, Jacqueline; Minegar, Skylar; Li, Zhaohui; Jiang, Wei-Teh

2013-08-27

241

Retention of engineering and technology undergraduates  

Microsoft Academic Search

The issue of undergraduate retention is not a new one, it has been debated since the turn of the last century. Nevertheless, the issue has been receiving increased attention and has become more pressing. This work focuses on the academic aspects of attrition and retention, which could be divided loosely into those which are intrinsically within the domains of institutions

A. M. Ibrahim; M. E. Brihoum

2001-01-01

242

Minority Teacher Recruitment and Retention Strategies  

ERIC Educational Resources Information Center

|The tools and resources in this book help school leaders seamlessly incorporate minority teacher recruitment and retention programs into current human-resources activities. With details about exemplary minority teacher recruitment and retention programs, this book also showcases strategies for how to replicate such programs in your own school or…

Kearney-Gissendaner, Janet E.

2010-01-01

243

Academic Advising to Facilitate Student Retention.  

ERIC Educational Resources Information Center

Seven components of an academic advising program that emphasizes student retention are examined. These components are as follows: an institutional commitment to academic advising, a faculty-endorsed statement of adviser responsibilities (with retention as a major emphasis), the training of advisers, an adviser evaluation and recognition for…

Kapraun, E. Daniel; Coldren, Doris W.

244

Academic Advising to Facilitate Student Retention.  

ERIC Educational Resources Information Center

Academic advising is a significant dimension of a campus-wide retention program, stimulating a positive, personalized student-teacher relationship. Components of an advising program emphasizing retention include: institutional commitment, faculty endorsement of advisor responsibilities, advisor training, advisor evaluation and recognition, peer…

Kapraun, E. Daniel, Jr; Coldren, Doris W.

1982-01-01

245

Community College Attrition/Retention, 1980's.  

ERIC Educational Resources Information Center

This 37-item bibliography cites monographs, reports, and journal articles dealing with the factors affecting college student retention and attrition. The entries, arranged alphabetically by author, cite works on drop-out prevention strategies, the factors that precipitate retention or attrition, and methodology for conducting student attrition…

Baker, John

246

Skin Surface Retention of an Applied Ointment  

Microsoft Academic Search

A routine method using quantitative thin-layer chromatography for the determination of the retention time of an applied ointment on healthy and psoriatic skin is described. The retention time of the ointment was longer on the diseased skin than on the healthy skin. The method is thought to be of practical value in cosmetology and clinical dermatology.Copyright © 1974 S. Karger

Lars Hellgren; Jan Vincent

1974-01-01

247

Retention: are students good predictors? [engineering education  

Microsoft Academic Search

The retention rates of engineering students, in general, are much lower than they should be. Of particular concern is the fact that women and underrepresented minorities are not only recruited in small numbers, but their retention rates are also low. Research has shown that there are many actions that can be done to help retain students. In order to better

Mary R. Anderson-Rowland

1997-01-01

248

Testing versus review: Effects on retention  

Microsoft Academic Search

97 high school seniors studied a brief history text, then either took a test on the passage, spent equivalent time reviewing the passage, or went on to an unrelated task. A retention test given 2 wks later indicated that the test condition resulted in better retention than either the review or the control conditions. The effect was further shown to

Ronald J. Nungester; Philippe C. Duchastel

1982-01-01

249

Knowledge retention: minimizing organizational business loss  

Microsoft Academic Search

Purpose – Knowledge retention is becoming a main challenge in many countries, as knowledge becomes a main asset of organizations. The research questions the challenge of how can organizations minimize the loss of important knowledge while experiencing high levels of retiree? The research aims to suggest a framework for knowledge retention initiatives in organizations. Design\\/methodology\\/approach – The research methodology is

Moria Levy

2011-01-01

250

Increasing Retention Without Increasing Study Time  

Microsoft Academic Search

Because people forget much of what they learn, students could benefit from learning strategies that yield long-lasting knowledge. Yet surprisingly little is known about how long-term retention is most efficiently achieved. Here we examine how retention is affected by two variables: the duration of a study session and the temporal distribution of study time across multiple sessions. Our results suggest

Doug Rohrer; Harold Pashler

2007-01-01

251

Retention of classroom and television learning  

Microsoft Academic Search

Comparison of retention three years after instruction was made for four conditions of learning introductory psychology: An off-campus television group (n = 40), a traditional classroom group (n = 22), a TV-in-studio class (n = 11), and a kinescope class (n = 10). The original-test-retention-test differences were not significant, nor was the test x group interaction. \\

Reba Patterson Benschoter; Don C. Charles

1957-01-01

252

Predicting the Retention of University Students.  

ERIC Educational Resources Information Center

Survival analysis was used to model retention of 8,867 undergraduate students at Oregon State University from 1991 to 1996. Attrition increased with age and nonresident status; it decreased with higher high-school and first-quarter grades, and attendance in a freshman orientation course. Retention was also associated with race/ethnicity and…

Murtaugh, Paul A.; Burns, Leslie D.; Schuster, Jill

1999-01-01

253

The Psychology Underlying Successful Retention Practices.  

ERIC Educational Resources Information Center

Describes the psychological processes that lead to academic and social integration based on a retention model proposed by the authors. Describes how successful retention programs such as learning communities, freshman interest groups, tutoring, and orientation rely on psychological processes. Four psychological theories form the basis for…

Bean, John; Eaton, Shevawn Bogdan

2002-01-01

254

Increasing Retention without Increasing Study Time  

ERIC Educational Resources Information Center

Because people forget much of what they learn, students could benefit from learning strategies that provide long-lasting knowledge. Yet surprisingly little is known about how long-term retention is most efficiently achieved. Here we examine how retention is affected by two variables: the duration of a study session and the temporal distribution…

Rohrer, Doug; Pashler, Hal

2007-01-01

255

Management Outcome of Acute Urinary Retention  

Microsoft Academic Search

Objectives: To assess for predictors of outcome in patients presenting with acute urinary retention (AUR). Methods: A study was performed in our unit to evaluate trial without catheter (TWOC) and successive management. We assessed for predictors of surgical or medical management, which included: age, volume drained at time of catheterisation, cause of retention, serum creatinine, success of trial of voiding,

Pádraig Daly; Stephen Connolly; Eamonn Rogers; Paul Sweeney

2009-01-01

256

RETENTION OF ARIZONA DEER HUNTING CUSTOMERS  

Microsoft Academic Search

Trends in retention of Arizona deer hunting customers were examined to determine which factors influence retention. Much of Arizona experienced drought conditions fiom 1989 through the present. The resulting impact on vegetation and available water has contributed to a decline in deer population numbers. The Arizona Game and Fish Commission has responded by reducing the number of deer hunting permits

TICE SUPPLEE; AMBER A. MUNIG

257

Profile in Action: Linking Admission and Retention  

ERIC Educational Resources Information Center

|A profile-oriented retention strategy embraces the admission process as a powerful lever in improving retention and completion rates and recognizes that the student profile can be shaped by changes in admission policies or priorities--even within the current market position of the institution. In addition, the student body can be oriented toward…

Cortes, Carla M.

2013-01-01

258

The Grade Retention/Social Promotion Debate.  

ERIC Educational Resources Information Center

This publication focuses on the retention/promotion debate regarding failing and low-achieving students. An introductory essay describes the inherent limitation in the research done on this issue--the impossibility of obtaining an appropriate control group--and suggests that the retention/promotion quandary can best be resolved by accommodating…

Lindelow, John

1985-01-01

259

Measuring Student Retention: A National Analysis.  

ERIC Educational Resources Information Center

|The authors analyzed class-by-class enrollment data from the 1985-86 annual survey of nursing education programs to report retention rates in different types of nursing education programs nationwide. They also present results from a survey addendum in which program directors were asked which factors contribute to their retention problems. (CH)|

Rosenfeld, Peri

1988-01-01

260

A systematic review of the effect of retention methods in population-based cohort studies  

PubMed Central

Background Longitudinal studies are of aetiological and public health relevance but can be undermined by attrition. The aim of this paper was to identify effective retention strategies to increase participation in population-based cohort studies. Methods Systematic review of the literature to identify prospective population-based cohort studies with health outcomes in which retention strategies had been evaluated. Results Twenty-eight studies published up to January 2011 were included. Eleven of which were randomized controlled trials of retention strategies (RCT). Fifty-seven percent of the studies were postal, 21% in-person, 14% telephone and 7% had mixed data collection methods. A total of 45 different retention strategies were used, categorised as 1) incentives, 2) reminder methods, repeat visits or repeat questionnaires, alternative modes of data collection or 3) other methods. Incentives were associated with an increase in retention rates, which improved with greater incentive value. Whether cash was the most effective incentive was not clear from studies that compared cash and gifts of similar value. The average increase in retention rate was 12% for reminder letters, 5% for reminder calls and 12% for repeat questionnaires. Ten studies used alternative data collection methods, mainly as a last resort. All postal studies offered telephone interviews to non-responders, which increased retention rates by 3%. Studies that used face-to-face interviews increased their retention rates by 24% by offering alternative locations and modes of data collection. Conclusions Incentives boosted retention rates in prospective cohort studies. Other methods appeared to have a beneficial effect but there was a general lack of a systematic approach to their evaluation.

2011-01-01

261

Electrochemically modulated liquid chromatographic separation of triazines and the effect of pH on retention.  

PubMed

Electrochemically modulated liquid chromatography (EMLC) manipulates analyte retention by changing the potential applied (E(app)) to a conductive stationary phase. This paper applies EMLC to the separation of a set of seven triazines which are commonly used but environmentally hazardous herbicides. Experiments herein examine the influence of E(app) and the pH of the mobile phase on triazine retention. The results are discussed in terms of: (1) retention of triazines of dissimilar acid strengths and by correlations with the pH of the mobile phase; (2) how changes in E(app) and acid-base equilibria modulate elution; (3) qualitative insights into EMLC-based retention; and (4) potential merits of EMLC in realizing the rapid separation of the seven-component triazine mixture. PMID:20478562

Yakes, Betsy Jean; Keller, David W; Porter, Marc D

2010-04-18

262

Overcoming barriers to recruitment and retention in adolescent smoking cessation.  

PubMed

Participant recruitment and retention have been identified as challenging aspects of adolescent smoking cessation interventions. Problems associated with low recruitment and retention include identifying smokers, obtaining active parental consent, protecting participants' privacy, respecting participants' autonomy, and making participation relevant and accessible to adolescents. This paper describes nine strategies for minimizing these recruitment and retention problems via a proactive telephone counseling intervention, and reports on their simultaneous implementation among 1,058 smokers from 25 high schools in Washington state. Results are as follows: (a) 85.9% of parents of minor-age seniors provided active consent for their teen's participation, (b) 89.8% of eligible smokers were successfully contacted by counselors, (c) 86.5% of contacted smokers consented to participate in the cessation counseling, (d) 93.8% of consented smokers participated in smoking cessation counseling calls, and (e) 72.2% of participating smokers completed their full intervention. These results demonstrate that older teens who smoke, and their parents, are receptive to confidential cessation counseling that is personally tailored, supportive of their autonomy, and proactively delivered via the telephone. PMID:17365757

Kealey, Kathleen A; Ludman, Evette J; Mann, Sue L; Marek, Patrick M; Phares, Melissa M; Riggs, Karin R; Peterson, Arthur V

2007-02-01

263

Engagement and Retention in Outpatient Alcoholism Treatment for Women  

PubMed Central

Reviews of the dropout literature note significant attrition from addiction treatment. However, consistent predictors have not been identified and few studies have examined factors related to retention and engagement for women in gender-specific treatment. The current study consisted of 102 women and their partners randomized to individual or couples outpatient alcoholism treatment. Women attended more treatment sessions if they were assigned to individual treatment, older, had fewer symptoms of alcohol dependence, had more satisfying marital relationships, had spouses who drank, and had matched preference for treatment condition. Women were more engaged in treatment (i.e., completed more assigned homework) if they had fewer children at home, fewer alcohol dependence symptoms, later age of onset of alcohol diagnosis, more satisfying marital relationships, and spouses who accepted or encouraged their drinking. Results highlight important associations of treatment and relationship variables with treatment retention and engagement.

Graff, Fiona S.; Morgan, Thomas J.; Epstein, Elizabeth E.; McCrady, Barbara S.; Cook, Sharon M.; Jensen, Noelle K.; Kelly, Shalonda

2011-01-01

264

Nephrotic syndrome: new concepts in the pathophysiology of sodium retention.  

PubMed

The nephrotic syndrome is a frequent clinical condition characterized by fluid and salt retention. Although several theories have been put forward to explain the salt-retaining status, recent data have confirmed previous renal micropuncture observations indicating that the distal nephron is the site for increased salt reabsorption, eventually leading to sodium retention. Target proteomic approaches and immunocytochemistry experiments have identified the epithelial sodium channel (ENaC) and basolateral Na+,K+-ATPase as the main transport proteins responsible for increased transepithelial sodium reabsorption in various forms of experimental nephrotic syndrome. Although the fine-tuning for the up-regulation of these transporters has not been so far elucidated, it is clear from clinical studies that the use of amiloride, a selective, dose-dependent ENaC inhibitor, is an appropriate tool to reduce distal sodium reabsorption and thus to offset edema formation. PMID:19034867

Zacchia, Miriam; Trepiccione, Francesco; Morelli, Franco; Pani, Antonello; Capasso, Giovambattista

265

21 CFR 878.4930 - Suture retention device.  

Code of Federal Regulations, 2013 CFR

... MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4930 Suture retention device. (a...retention device is a device, such as a retention bridge, a surgical button, or a suture bolster, intended to aid wound...

2013-04-01

266

Aseptic Meningitis with Urinary Retention: A Case Report  

PubMed Central

Introduction. Aseptic meningitis is serious inflammation of the meninges caused by agents including viruses, non-viral pathogens, non-infectious conditions and chemicals. Case Presentation. This study concerns the case of a 16-year-old healthy Greek female with persistent fever, mild headache and acute urinary retention, secondary to aseptic meningitis. Physical examination revealed no distinct signs of meningeal irritation. The urinary bladder was palpable, painless and over-distended. Serology carried out for common viruses was as follows: CMV IgG (?), CMV IgM (?), HSV IgG (?), HSV IgM (+), VZ IgG (+), VZ IgM (?), EBV IgG (?) and EBV IgM (+). During recovery in hospital, three trials of removing a urinary catheter were carried out; during the first two attempts the patient was unable to urinate and had a loss of bladder sensation. On the third attempt the patient had modest bladder perception but she left a post-voiding residual, and was instructed to perform bladder self-catheterization. Seven days after being discharged the patient underwent a full recovery. Conclusion. There are few reports concerning aseptic meningitis together with acute urinary retention. A number of these cases concern so-called “meningitis-retention syndrome,” which implies an underlying CNS mechanism, while others concerned an underlying peripheral nervous system mechanism.

Ntziora, Fotinie; Alevizopoulos, Aristidis; Konstantopoulos, Kostas; Kanellopoulou, Sofia; Bougas, Dimitrios; Stravodimos, Konstantinos

2011-01-01

267

Effective recruitment and retention strategies in community health programs.  

PubMed

Issue addressed The aim of this project was to identify effective recruitment and retention strategies used by health-promotion organisations that focus on increasing physical activity and improving nutrition within the local community. Methods Semistructured telephone or face-to-face interviews with 25 key informants from stakeholder organisations were conducted. Key informants discussed strategies used by their organisation to effectively recruit and retain participants into community-based healthy eating and/or physical activity programs. Transcribed data were analysed with NVivo software. Results Effective recruitment strategies included word of mouth, links with organisations, dissemination of printed materials, media, referrals, cross-promotion of programs and face-to-face methods. Effective retention strategies included encouraging a sense of community ownership, social opportunities, recruiting a suitable leader and offering flexibility and support. Fees and support for recruiting and retaining participants was also identified. Conclusion This study provides novel insights to a greatly under researched topic in the field of health promotion. There are two key take-home messages from the present study that are applicable to health practitioners as well as developers and deliverers of community health-promotion programs: (1) it is imperative that all community health organisations report on the effectiveness of their recruitment and retention, both successes and failures; and (2) there is a clear need to tailor the recruitment and retention approach to the target population and the setting the program is occurring in. So what? These findings provide important insights for the development of future community-based healthy eating and physical activity programs. PMID:24168736

McCann, Jennifer; Ridgers, Nicola D; Carver, Alison; Thornton, Lukar E; Teychenne, Megan

2013-10-01

268

Predictors of Calcium Retention in Adolescent Boys  

PubMed Central

Context: The relationship between calcium (Ca) intake and Ca retention in adolescent boys was recently reported. Objective: This study evaluated the influence of Ca intake, serum hormone levels, biomarkers of bone metabolism, habitual physical activity, habitual Ca intake, and physical fitness on Ca retention in the same sample. Design: This study was a randomized, cross-over design that consisted of two 3-wk metabolic balance periods. Setting: The study took place on a university campus as a summer camp. Patients or Other Participants: A total of 31 American white boys (13–15 yr) participated in the study. Interventions: Each subject consumed a controlled diet with one of five high-low Ca intake pairs that ranged from 670-2003 mg/d, which was manipulated utilizing a fortified beverage. Main Outcome Measures: Ca retention was determined by Ca intake minus urinary and fecal Ca excretion during each balance period. Results: Ca intake explained 21.7% of the variability in Ca retention, and serum IGF-I concentration explained an additional 11.5%. Other serum hormone levels did not significantly add to the model. Biomarkers of bone metabolism, habitual physical activity, habitual Ca intake, and physical fitness were not significant predictors of Ca retention in adolescent boys. Conclusions: IGF-I, a regulator of growth during puberty, is an important predictor of Ca retention in adolescent boys. However, dietary Ca intake is an even greater predictor of Ca retention during this period of growth.

Hill, Kathleen M.; Braun, Michelle; Kern, Mark; Martin, Berdine R.; Navalta, James W.; Sedlock, Darlene A.; McCabe, Linda; McCabe, George P.; Peacock, Munro; Weaver, Connie M.

2008-01-01

269

Common Wetland Delineation Sedges of the Northeast.  

National Technical Information Service (NTIS)

This field guide is intended to assist in identifying 16 of the most common Carex (sedge) species observed during wetland delineations. And additional 26 species that are similar in appearance to these common sedges are included and distinguished. This gu...

R. Lichvar

2005-01-01

270

New Directions in Education Research: Using Data Mining Techniques to Explore Predictors of Grade Retention  

ERIC Educational Resources Information Center

|The purpose of this study was to use classification trees and logistic regression to identify subgroups of students more likely to be retained. The National Educational Longitudinal Study of 1988 (NELS:88) was used to identify the sociodemographic, family background and school related factors associated with grade retention. The sample size for…

Kelley-Winstead, Deanna

2010-01-01

271

What predicts retention on an in-prison drug treatment program?  

PubMed

The effectiveness of treatments for substance use disorders is strongly related to retention, since early dropout from treatment is associated with greater likelihood of relapse. The purpose of this prospective, ex post facto study is to analyze the effect of individual variables on retention in a treatment program carried out in a prison drug-free unit. The Addiction Severity Index, motivation and personality profile of fifty inmates were assessed on entry to the prison. Inmates were monitored for a year to identify length of stay. Results: Motivation variables at intake play a vital role in the prediction of retention in a prison drug-free unit; scores on the Aggressive-Sadistic and Narcissistic scales are also strong predictors of treatment retention. PMID:23156938

Casares-López, María José; González-Menéndez, Ana; Fernández, Paula; Secades-Villa, Roberto; Fernández-Hermida, José Ramón

2012-11-01

272

10 CFR 490.810 - Record retention.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Record retention. 490.810 Section 490.810 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION ALTERNATIVE FUEL TRANSPORTATION PROGRAM Alternative Compliance § 490.810 Record...

2013-01-01

273

Taking a Holistic Approach to Retention.  

ERIC Educational Resources Information Center

Describes how, at the University of Kansas, many students of color are excelling at a rate that has outpaced their peers. Campus officials credit the HAWK Link program and its comprehensive approach to retention. (EV)

Fields, Cheryl D.

2002-01-01

274

49 CFR 576.7 - Retention.  

Code of Federal Regulations, 2012 CFR

...Retention. Duplicate copies need not be retained. Information may be reproduced or transferred from one storage medium to another (e.g., from paper files to microfilm) as long as no information is lost in the reproduction or transfer, and...

2012-10-01

275

Escitalopram-associated acute urinary retention.  

PubMed

New-onset urinary retention can typically be explained by the use of the routine normally suspected medications (e.g., anticholinergics, antihistamines). However, selective serotonin-reuptake inhibitors are not typically presumed as the cause of acute urinary retention (AUR). The following case describes the introduction of escitalopram in a patient and the subsequent development of AUR. Medical causes of urinary retention had been ruled out, and ipratropium was initially suspected to be the cause of urinary difficulties and was discontinued. However, the retention persisted four days after suspending the ipratropium. Normal micturition resumed only after stopping the escitalopram without further need for catheterization. Escitalopram may cause rare cases of AUR and may often times be overlooked possibly because of the paucity of reporting. PMID:24129221

Trombetta, Dominick; Garrett, Kathleen; Harrison, Marissa

2013-10-01

276

Managing Chemotherapy Side Effects: Swelling (Fluid Retention)  

MedlinePLUS

... anD human services national institutes of health Managing Chemotherapy Side Effects Swelling (Fluid retention) Call your doctor ... causes swelling? Swelling can be caused by the chemotherapy. Some types of cancer or hormone changes can ...

277

49 CFR 599.502 - Record retention.  

Code of Federal Regulations, 2012 CFR

...TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) REQUIREMENTS AND PROCEDURES FOR CONSUMER ASSISTANCE TO RECYCLE AND SAVE ACT PROGRAM Enforcement § 599.502 Record retention. (a) Manufacturers, dealers, salvage...

2012-10-01

278

49 CFR 599.502 - Record retention.  

Code of Federal Regulations, 2011 CFR

...TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) REQUIREMENTS AND PROCEDURES FOR CONSUMER ASSISTANCE TO RECYCLE AND SAVE ACT PROGRAM Enforcement § 599.502 Record retention. (a) Manufacturers, dealers, salvage...

2011-10-01

279

Deuterium retention in NSTX with lithium conditioning  

NASA Astrophysics Data System (ADS)

Fuel retention is an important constraint in the selection of plasma facing materials for next-step tokamaks. Gas balance measurements of retention in NSTX have been performed before- and with lithiumization of the vessel. The gas retained in ohmic discharges was measured by comparing the vessel pressure rise after a discharge to that of a gas-only pulse with the pumping valves closed. For neutral beam heated discharges the gas input and gas pumped by the NB cryopanels was tracked. Preliminary results show high (˜ 90%) prompt retention both with- and without lithiumization. Outgassing of deuterium follows, initially at a high rate that then slowed over the following 24 hours to become comparable to the baseline vessel presure rate of rise and reduced the retention to the ˜ 50% level. Four material samples were exposed to the plasma and analysed in-vacuo the same evening in order to investigate the fundamental processes governing particle balance with lithium coatings.

Skinner, C. H.; Kugel, H. W.; Roquemore, L.; Allain, J. P.; Taylor, C. N.; Soukhanovskii, V.

2009-11-01

280

7 CFR 400.412 - Record retention.  

Code of Federal Regulations, 2013 CFR

...REGULATIONS General Administrative Regulations; Collection and Storage of Social Security Account Numbers and Employer Identification Numbers § 400.412 Record retention. (a) FCIC or the insurance provider will retain all...

2013-01-01

281

Building 310 retention tanks characterization report.  

National Technical Information Service (NTIS)

The Health Physics Section of ANL performed a characterization of the Building 310 Service Floor Retention Tank Facility during the months of July and August, 1996. The characterization included measurements for radioactivity, air sampling for airborne pa...

C. M. Sholeen D. C. Geraghty

1996-01-01

282

Tritium retention and removal on TFTR  

SciTech Connect

Tritium retention and removal are critical issues for the success of ITER or any DT fusion reactor. The Tokamak Fusion Test Reactor, TFTR, is the first fusion facility to afford the opportunity to study the tritium retention and removal over an extended period. In TFTR, tritium accumulates on all surfaces with line of sight to the plasma by codeposition of tritium with carbon. Measurements of both deuterium and tritium retention fractions have yielded retention between 0.2 and 0.6 of the injected fuel in the torus. Tritium has been successfully removed from TFTR by glow discharge cleaning and by air purges. The in-vessel inventory was reduced by a factor of 2, facilitating machine maintenance. In TFTR, the amount of dust recovered from the TFTR vacuum vessel has varied from several grams to a few kilograms.

Mueller, D.; Blanchard, W. [Princeton Plasma Physics Lab., NJ (United States); Doyle, B.L. [Sandia National Labs., Albuquerque, NM (United States)] [and others

1997-10-01

283

Tritium retention and removal on TFTR  

SciTech Connect

Tritium retention and removal are critical issues for the success of ITER or any DT fusion reactor. The Tokamak Fusion Test Reactor, TFTR, is the first fusion facility to afford the opportunity to study the tritium retention and removal over an extended period. In TFTR, tritium accumulates on all surfaces with line of sight to the plasma by codeposition of tritium with carbon. Measurements of both deuterium and tritium retention fractions have yielded retention between 0.2 and 0.6 of the injected fuel in the torus. Tritium has been successfully removed from TFTR by glow discharge cleaning and by air purges. The in-vessel inventory was reduced by a factor of 2, facilitating machine maintenance. In TFTR, the amount of dust recovered from the TFTR vacuum vessel has varied from several grams to a few kilograms.

Mueller, D.; Blanchard, W. [Princeton Univ., NJ (United States). Princeton Plasma Physics Lab.; Doyle, B.L. [Sandia National Labs., Albuquerque, NM (United States)] [and others

1997-11-01

284

45 CFR 1309.41 - Record retention.  

Code of Federal Regulations, 2011 CFR

...HEAD START PROGRAM HEAD START FACILITIES PURCHASE, MAJOR RENOVATION AND CONSTRUCTION Other Administrative Provisions § 1309...retention. All records pertinent to the acquisition or major renovation of a facility must be retained by the grantee for a...

2011-10-01

285

45 CFR 1309.41 - Record retention.  

Code of Federal Regulations, 2012 CFR

...HEAD START PROGRAM HEAD START FACILITIES PURCHASE, MAJOR RENOVATION AND CONSTRUCTION Other Administrative Provisions § 1309...retention. All records pertinent to the acquisition or major renovation of a facility must be retained by the grantee for a...

2012-10-01

286

Compensation and Teacher Retention: A Success Story.  

ERIC Educational Resources Information Center

Describes components of successful teacher-evaluation and compensation program at the Ladue School District in suburban St. Louis, Missouri. Reports that salary increases based on performance evaluations improve teacher satisfaction and retention. (Contains 13 references.) (PKP)

Morice, Linda C.; Murray, James E.

2003-01-01

287

Measuring the value of customer retention  

Microsoft Academic Search

Competition will require changes in how market research is conducted and how customers are pursued. The question remains: How do we approach customer retention in a way that provides meaningful guidelines?

Ken Monts; Beverly Bonevac; Joseph Lauer; Dagnatchew Tessema

1997-01-01

288

Improved estimation of soil water retention characteristics from hydrostatic column experiments  

NASA Astrophysics Data System (ADS)

The soil water retention characteristic, ?(h), is required for modeling and predicting water and solute transport in unsaturated porous media. Commonly, ?(h) is determined by relating pressure heads, h, to mean water contents, ?, that are measured in column experiments under hydrostatic equilibrium conditions and fitting a parametric retention function to these data pairs. Implicit to this method is the assumption that the mean water content of the column is equivalent to a point measurement in the column center. Dependent on the nonlinearity of the vertical water content distribution, ?(z), in the column, this assumption may be invalid and introduces a systematic error. A sensitivity analysis shows that the magnitude of the error caused by neglecting the nonlinearity of the water content distribution may reach several percent if coarse materials with low air entry values and tall soil columns are investigated. Furthermore, neglecting ?(z) yields a smoothed retention characteristic and thus may lead to wrong conclusions about the most appropriate parametric model for the water retention characteristic. If the hydraulic conductivity function K(h) is predicted from such an incorrect retention function, it can differ greatly from the true function. In this paper, we propose to consider the measured water content of a soil column explicitly as an integral of the equilibrium water content distribution with depth. We show that this eliminates systematic parameter estimation errors and leads to improved estimates of the soil water retention function.

Peters, A.; Durner, W.

2006-11-01

289

Fluid Retention over the Menstrual Cycle: 1-Year Data from the Prospective Ovulation Cohort  

PubMed Central

We report menstrual and mid-cycle patterns of self-reported “fluid retention” in 765 menstrual cycles in 62 healthy women. Self-reported “fluid retention,” commonly described as bloating, is one element of the clinical assessment and diagnosis of premenstrual symptoms. These daily diary data were collected as part of an observational prospective one-year study of bone changes in healthy women of differing exercise characteristics. Ovulation was documented by quantitative basal temperature analysis, and serum estradiol and progesterone levels were available from initial and final cycles. Fluid retention scores (on a 0–4 scale) peaked on the first day of menstrual flow (mean ± SE : 0.9 ± 0.1), were lowest during the mid-follicular period, and gradually increased from 0.22 ± 0.05 to 0.50 ± 0.09 over the 11 days surrounding ovulation. Mid-cycle, but not premenstrual, fluid scores tended to be lower in anovulatory cycles (ANOVA P = 0.065), and scores were higher around menstruation than at midcycle (P < 0.0001). Neither estradiol nor progesterone levels were significantly associated with fluid retention scores. The peak day of average fluid retention was the first day of flow. There were no significant differences in women's self-perceived fluid retention between ovulatory and anovulatory cycles.

White, Colin P.; Hitchcock, Christine L.; Vigna, Yvette M.; Prior, Jerilynn C.

2011-01-01

290

ADDITIVE TESTING FOR IMPROVED SULFUR RETENTION: PRELIMINARY REPORT  

SciTech Connect

The Savannah River National Laboratory is collaborating with Alfred University to evaluate the potential for additives in borosilicate glass to improve sulfur retention. This preliminary report provides further background on the incorporation of sulfur in glass and outlines the experiments that are being performed by the collaborators. A simulated waste glass composition has been selected for the experimental studies. The first phase of experimental work will evaluate the impacts of BaO, PbO, and V{sub 2}O{sub 5} at concentrations of 1.0, 2.0, and 5.0 wt % on sulfate retention in simulated high level waste borosilicate glass. The second phase of experimental work will evaluate the effects of time at the melt temperature on sulfur retention. The resulting samples will be characterized to determine the amount of sulfur remaining as well as to identify the formation of any crystalline phases. The results will be used to guide the future selection of frits and glass forming chemicals in vitrifying Department of Energy wastes containing high sulfur concentrations.

Amoroso, J.; Fox, K.

2011-09-07

291

Faculty ratings of retention strategies for minority nursing students.  

PubMed

The purpose of this study was to investigate a) the types of retention strategies used by undergraduate nursing programs for the purpose of retaining minority students, b) the rated effectiveness of the strategies, as identified by faculty in those programs, and c) whether there is a relationship between strategies rated as effective and the type of nursing program, baccalaureate (BSN) or associate (AD) degree. Administrator-selected faculty from randomly sampled BSN and AD nursing programs within a 16-state area of the southeastern United States were asked to respond to an online survey regarding the use and effectiveness of retention strategies selected from the literature. Descriptive statistics and chi-square tests for association were used to analyze the data. Of the 14 strategies included in this analysis, faculty availability and timely feedback on tests and clinical performances were used by all undergraduate programs. Organized study groups and peer mentoring were the least used strategies. Faculty from both BSN and AD programs reported using many of the strategies and rated their use as effective overall for minority nursing student retention. The highest rated strategies were those that involved direct interaction of nurse faculty and students. PMID:20882860

Baker, Barbara H

292

Prediction of peptide retention times in high-pressure liquid chromatography on the basis of amino acid composition.  

PubMed

Analysis of peptides by reverse-phase high-pressure liquid chromatography would be simplified if retention times could be predicted by summing the contribution to retention of each of the peptide's amino acid side chains. This paper describes the derivation of values ("retention coefficients") that represent the contribution to retention of each of the common amino acids and end groups. Peptide retention times were determined on a Bio-Rad "ODS" column at room temperature with a linear gradient from 0.1 M NaclO(4), pH 7.4 or 2.1, at 0 min to 60% acetonitrile/0.1 M NaclO(4) at 80 min. The NaclO(4), a chaotropic agent, was added to improve peak shape and to minimize conformational effects. Retention coefficients for the amino acids were computed by using a Hewlett-Packard 9815A calculator programmed to change the retention coefficients for all amino acids sequentially to obtain a maximum correlation between actual and predicted retention times. Correlations of 0.999 at pH 7.4 and 0.997 at pH 2.1 were obtained for 25 peptides including glucagon, oxytocin, [Met]enkephalin, neurotensin, and somatostatin. This high degree of correlation suggests that, for peptides containing up to 20 residues, retention is primarily due to partition processes that involve all the residues. Although steric or conformational factors do have some effect on retention, the data suggest that under the above chromatographic conditions the retention of peptides containing up to 20 residues can be predicted solely on the basis of their amino acid composition. This possibility was tested by using data taken from the literature. PMID:6929513

Meek, J L

1980-03-01

293

N Retention in Urbanizing Headwater Catchments  

Microsoft Academic Search

Urbanization can potentially alter watershed nitrogen (N) retention via combined changes in N loading, water runoff, and N\\u000a processing potential. We examined N export and retention for two headwater catchments (?4 km2) of contrasting land use (16% vs. 79% urban) in the Plum Island Ecosystem (PIE-LTER) watershed, MA. The study period included\\u000a a dry year (2001–2002 water year) and a

Wilfred M. Wollheim; Brian A. Pellerin; Charles J. Vörösmarty; Charles S. Hopkinson

2005-01-01

294

Knowledge retention in the IT service industry  

Microsoft Academic Search

Purpose – The purpose of this paper is to develop and evaluate an effective employee retention plan for information technology (IT) service organizations as part of a knowledge management (KM) strategy. Design\\/methodology\\/approach – The employee retention plan is evaluated at three IT multi-national companies which are providing global IT services with successful knowledge management systems (KMS) in place. Semi-structured telephone

Jayachandra Bairi; B. Murali Manohar; Goutam Kumar Kundu

2011-01-01

295

Urinary retention in women and sacral neuromodulation  

Microsoft Academic Search

The remit of this article is to provide an overview of urinary retention in women, taking into account the predisposing factors,\\u000a aetiology, investigations and treatments. The information presented is based on a widespread search of the English literature\\u000a using multiple library sites on the internet and on personal experience. Urinary retention occurs when there is impaired bladder\\u000a emptying, resulting in

Sohier Elneil

2010-01-01

296

Molecular Mechanisms Controlling GLUT4 Intracellular Retention  

Microsoft Academic Search

ABSTRACT In basal adipocytes GLUT4 is sequestered intracellularly by an insulin-reversible retention mechanism. Here we analyze the roles of three GLUT4 trafficking motifs (FQQI, TELEY and LL), providing molecular links between insulin signaling, cellular trafficking machinery and the motifs in the specialized trafficking of GLUT4. Our resultssupport a GLUT4 retention model that involves two linked intracellular cycles: one between endosomes

Vincent Blot; Timothy E. McGraw

2008-01-01

297

All Retention all the Time: How Institutional Research Can Synthesize Information and Influence Retention Practices  

Microsoft Academic Search

Abstract This study reports how an institutionalre search office at a large public research university has taken the lead to call attention to retention problems, describe attrition\\/retention predictors, and influence policy. Building on existing retention theories and previous institutional research studies, the institutional research office began coordinating several first- year study-based initiatives whose primary purpose was understanding and promoting first-year

A. Michael Williford; Joni Y. Schaller

2005-01-01

298

A Computer-Based Undergraduate Exercise Using Internet-Accessible Simulation Software for the Study of Retention Behavior and Optimization of Separation Conditions in Ion Chromatography  

ERIC Educational Resources Information Center

|The ability to scan retention data over a wide range of eluent composition opens up the possibility of a computerized selection of the optimal separation conditions. The major characteristics of retention behavior, peak-shape effects and pH effects evident in ion chromatography (IC) using common stationary phases and eluents are illustrated.|

Haddad, Paul R.; Shaw, Matthew J.; Madden, John E.; Dicinoski, Greg W.

2004-01-01

299

Liposomal formulations of poorly soluble camptothecin: drug retention and biodistribution.  

PubMed

Camptothecin (CPT) represents a potent anticancer drug. However, its therapeutic use is impaired by both drug solubility, hydrolysis, and protein interactions in vivo. Use of liposomes as a drug-formulation approach could overcome some of these challenges. The aim of this study was to perform a mechanistic study of the incorporation and retention of the lipophilic parent CPT compound in different liposome formulations using radiolabeled CPT and thus to be able to identify promising CPT delivery systems. In this context, we also wanted to establish an appropriate mouse tumor model, in vivo scintigraphic imaging, and biodistribution methodology for testing the most promising formulation. CPT retention in various liposome formulations after incubation in buffer and serum was determined. The HT-29 mouse tumor model, (111)In-labeled liposomes, as well as (3)H-labeled CPT were used to investigate the biodistribution of liposomes and drug. The ability of different liposome formulations to retain CPT in buffer was influenced by lipid concentration and drug/lipid ratio, rather than lipid composition. The tested formulations were cleared from the blood in the following order: CPT solution > CPT liposomes > (111)In-labeled liposomes, and liposomes mainly accumulated in the liver. Lipid composition did not influence CPT retention to the same extent as earlier observed from incorporation studies. The set-up for the biodistribution study works well and is suited for future in vivo studies on CPT liposomes. The biodistribution study showed that liposomes circulated longer than free drug, but premature release of drug from liposomes occurred. Further studies to develop formulations with higher retention potential and prolonged circulation are desired. PMID:23210622

Flaten, Gøril Eide; Chang, Ting-Tung; Phillips, William T; Brandl, Martin; Bao, Ande; Goins, Beth

2012-12-05

300

Extensive management promotes plant and microbial nitrogen retention in temperate grassland.  

PubMed

Leaching losses of nitrogen (N) from soil and atmospheric N deposition have led to widespread changes in plant community and microbial community composition, but our knowledge of the factors that determine ecosystem N retention is limited. A common feature of extensively managed, species-rich grasslands is that they have fungal-dominated microbial communities, which might reduce soil N losses and increase ecosystem N retention, which is pivotal for pollution mitigation and sustainable food production. However, the mechanisms that underpin improved N retention in extensively managed, species-rich grasslands are unclear. We combined a landscape-scale field study and glasshouse experiment to test how grassland management affects plant and soil N retention. Specifically, we hypothesised that extensively managed, species-rich grasslands of high conservation value would have lower N loss and greater N retention than intensively managed, species-poor grasslands, and that this would be due to a greater immobilisation of N by a more fungal-dominated microbial community. In the field study, we found that extensively managed, species-rich grasslands had lower N leaching losses. Soil inorganic N availability decreased with increasing abundance of fungi relative to bacteria, although the best predictor of soil N leaching was the C/N ratio of aboveground plant biomass. In the associated glasshouse experiment we found that retention of added (15)N was greater in extensively than in intensively managed grasslands, which was attributed to a combination of greater root uptake and microbial immobilisation of (15)N in the former, and that microbial immobilisation increased with increasing biomass and abundance of fungi. These findings show that grassland management affects mechanisms of N retention in soil through changes in root and microbial uptake of N. Moreover, they support the notion that microbial communities might be the key to improved N retention through tightening linkages between plants and microbes and reducing N availability. PMID:23227252

de Vries, Franciska T; Bloem, Jaap; Quirk, Helen; Stevens, Carly J; Bol, Roland; Bardgett, Richard D

2012-12-05

301

Nurses' retention and hospital characteristics in New South Wales, CHERE Discussion Paper No 52  

Microsoft Academic Search

Nursing shortages are commonly observed features of hospital systems in Australia, Europe and the United States. To date there has been very little research on the effects of hospital characteristics on the retention of the nursing staff. In this paper we match individual data on registered nurses (RNs) working in the public sector in NSW in 1996 to the hospital

Denise Doiron; Glenn Jones

2004-01-01

302

Pilot Scale Microfiltration–Coagulation for Treatment of Retention Pond Water  

Microsoft Academic Search

An evaluation of two commonly used coagulants, alum and ferric chloride was conducted to treat retention pond water using microfiltration. To determine the effectiveness of these coagulants in removing turbidity, color, and total suspended solids two different sets of the experiments were performed. Preliminary test was carried out to evaluate the optimum dosages of coagulants. Optimum turbidity removal was achieved

Katayon Saed; Megat Johari Megat Mohd Noor; Abdul Ghani Liew Abdullah; Mohd Razman Salim; Hiroshi Nagaoka; Hidenori Aya

2004-01-01

303

The School of Language and Liberal Arts Writing Program and Retention at Fanshawe College  

ERIC Educational Resources Information Center

Student retention has remained, over many decades, a strong area of concern in postsecondary education, for good reason. Retaining students is a key factor in an institution's maintenance of its stability and reputation, and it helps students and society to avoid the all-too-common consequences associated with a lack of education, including…

Marshall, Corinne

2008-01-01

304

Using collaborative, modified peer led team learning to improve student success and retention in intro cs  

Microsoft Academic Search

It is common knowledge that enrollments in computer science have plummeted and educators are challenged to find ways to engage and promote success and retention of students while maintaining standards in introductory computer science courses. This study focuses on the implementation of a collaborative, modified peer-led team learning (PLTL) instructional approach in a large sized introductory computer science course. The

Maureen Biggers; Tuba Yilmaz; Monica Sweat

2009-01-01

305

Edge-related gradients in microclimate in forest aggregates following structural retention harvests in western Washington  

Microsoft Academic Search

Aggregated retention is now a common method of regeneration harvest in forest ecosystems managed for both timber and ecological objectives. If residual forest aggregates are to serve as temporary refugia for species sensitive to disturbance or environmental stress, microclimatic conditions must be sufficiently buffered to allow for their persistence. In 1-ha aggregates at three experimental sites in western Washington, we

Troy D. Heithecker; Charles B. Halpern

2007-01-01

306

Wage-Tenure Contracts in a Frictional Labour Market: Firms’ Strategies for Recruitment and Retention  

Microsoft Academic Search

A common assumption in equilibrium search and matching models of the labour market is that each firm posts a wage, to be paid to any worker hired. This paper considers the implications of firms posting contracts, in a random matching model with on-the-job search. More complex contracts enable firms to address both recruitment and retention problems by, for example, increasing

Margaret Stevens

2004-01-01

307

Rapid palatal expansion. Part 3: Strains developed during active and retention phases  

Microsoft Academic Search

Patterns of strain accumulation\\/dissipation during the active and retention phases of rapid palatal expansion treatment were studied in a preliminary animal model (5 cats) followed by clinical study (14 patients). Two uni-axial strain gauges were bonded to the arms of a hyrax screw. The strain gauges were wired intraorally to a common male connector and protected against salivary assault. For

Tamar Brosh; Alexander Dan Vardimon; Costas Ergatudes; Adir Spiegler; Myron Lieberman

1998-01-01

308

Wetting process and soil water retention of a minesoil amended with composted and thermally dried sludges  

Microsoft Academic Search

Composting or thermally-drying sludges are becoming commonly used in soil rehabilitation of degraded land. Sludge amendments increase soil organic matter, but can reduce soil wettability due to hydrophobic compounds. The main objective of this study is to analyse how composted and thermally dried sludges influence soil wettability and water retention properties of a minesoil obtained from limestone extraction during quarrying

G. Ojeda; S. Mattana; J. M. Alcañiz; G. Marando; M. Bonmatí; S. K. Woche; J. Bachmann

2010-01-01

309

Grade Retention: A Three Part Series. Policy Briefs. Grade Retention: A Flawed Education Strategy [and] Cost-Benefit Analysis of Grade Retention [and] Grade Retention: The Gap between Research and Practice  

ERIC Educational Resources Information Center

|This document compiles a series of three policy briefs focused on the subject of grade retention. The first brief, "Grade Retention: A Flawed Education Strategy," suggests educators and policymakers caution the use of grade retention as a remedy for poor student performance. As concluded by the majority of past studies, grade retention is a…

Xia, Claire; Glennie, Elizabeth

2005-01-01

310

Customer Retention, Purchasing Behavior and Relationship Substance in Professional Services  

Microsoft Academic Search

Customer retention is central to the development of business relationships. However, customer retention is specific to the context of each firm, and this is rarely recognized in models for customer retention. This paper studies how customer retention depends on the relationship substance built up due to interaction between the parties. Relationship substance may be of a more or less embedded

Kent Eriksson; Anna Lofmarck Vaghult

2000-01-01

311

Student Retention Policy: The Gap Between Research and Practice  

Microsoft Academic Search

A randomly selected national sample of 880 first and fifth grade teachers reported their perceptions of student retention. The overall finding was that there exists an unwritten policy among teachers that retention of students is beneficial. One finding revealed that teachers advocate retention to improve academic performance. Another confirmed that teachers believed in the practice of retention to facilitate student

C. Kenneth Tanner; F. Edward Combs

1993-01-01

312

Predictors of Retention among Men Attending STI Clinics in HIV Prevention Programs and Research: A Case Control Study in Pune, India  

Microsoft Academic Search

BackgroundRetention is critical in HIV prevention programs and clinical research. We studied retention in the three modeled scenarios of primary prevention programs, cohort studies and clinical trials to identify predictors of retention.Methodology\\/Principal FindingsMen attending Sexually Transmitted Infection (STI) clinics (n = 10, 801) were followed in a cohort study spanning over a ten year period (1993–2002) in Pune, India. Using

Seema Sahay; Nikhil Gupte; Radhika G. Brahme; Amit Nirmalkar; Shilpa Bembalkar; Robert C. Bollinger; Sanjay Mehendale

2011-01-01

313

Common Career Technical Core: Common Standards, Common Vision for CTE  

ERIC Educational Resources Information Center

This article provides an overview of the National Association of State Directors of Career Technical Education Consortium's (NASDCTEc) Common Career Technical Core (CCTC), a state-led initiative that was created to ensure that career and technical education (CTE) programs are consistent and high quality across the United States. Forty-two states,…

Green, Kimberly

2012-01-01

314

Common Career Technical Core: Common Standards, Common Vision for CTE  

ERIC Educational Resources Information Center

|This article provides an overview of the National Association of State Directors of Career Technical Education Consortium's (NASDCTEc) Common Career Technical Core (CCTC), a state-led initiative that was created to ensure that career and technical education (CTE) programs are consistent and high quality across the United States. Forty-two states,…

Green, Kimberly

2012-01-01

315

Colloid Transport and Retention in Fractured Media  

SciTech Connect

The goal of this project was to identify the chemical and physical factors that control the transport of colloids in fractured materials, and develop a generalized capability to predict colloid attachment and detachment based on hydraulic factors (head, flow rate), physical processes and structure (fracture aperture, matrix porosity), and chemical properties (surface properties of colloids, solution chemistry, and mineralogy of fracture surfaces). Both aqueous chemistry and physical structure of geologic formations influenced transport. Results of studies at all spatial scales reached consensus on the importance of several key controlling variables: (1) colloid retention is dominated by chemical conditions favoring colloid-wall interactions; (2) even in the presence of conditions favorable to colloid collection, deposited colloids are remobilized over long times and this process contributes substantially to the overall extent of transport; (3) diffusive exchange between water-conducting fractures and finer fractures and pores acts to ''buffer'' the effects of the major fracture network structure, and reduces predictive uncertainties. Predictive tools were developed that account for fundamental mechanisms of colloid dynamics in fracture geometry, and linked to larger-scale processes in networks of fractures. The results of our study highlight the key role of physical and hydrologic factors, and processes of colloid remobilization that are potentially of even greater importance to colloid transport in the vadose zone than in saturated conditions. We propose that this work be extended to focus on understanding vadose zone transport processes so that they can eventually be linked to the understanding and tools developed in our previous project on transport in saturated groundwater systems.

McCarthy, J.F.

2001-02-01

316

Genetic identifiers of epilepsy.  

PubMed

Epilepsy affects >0.5% of the world's population and has a large genetic component. The most common human genetic epilepsies display a complex pattern of inheritance, and the identity of the susceptibility genes is largely unknown despite recent advances in molecular biology. However, genetic identifiers of certain types of epilepsy with neurodegenerative characteristics and of a small number of familial idiopathic epilepsies have been uncovered to date. This article reviews recent progress made in molecular genetics of epilepsy, focusing mostly on idiopathic epilepsy together with our own discovery of novel mutations in the genes of autosomal dominant nocturnal frontal lobe epilepsy and benign familial neonatal convulsions (BFNCs), and the genetic locus of benign adult familial myoclonic epilepsy. Pathogenesis of epilepsy as a channelopathy and of BFNC also is discussed. PMID:12383274

Kaneko, Sunao; Iwasa, Hiroto; Okada, Motohiro

2002-01-01

317

Does the Timing of Grade Retention Make a Difference? Examining the Effects of Early versus Later Retention  

ERIC Educational Resources Information Center

|Research examining the effectiveness of grade retention has provided overwhelming and seemingly irrefutable evidence that grade retention is an ineffective and potentially harmful practice. However, proponents of grade retention often advocate that retention in the early elementary grades (e.g., kindergarten, first and second grade) is the…

Silberglitt, Benjamin; Jimerson, Shane R.; Burns, Matthew K.; Appleton, James J.

2006-01-01

318

Record Retention Practices among the Nation's "Most Wired" Hospitals  

PubMed Central

This exploratory study examined health record retention practices among health information management professionals in acute care general hospitals in the United States. A descriptive research design was used, and data were collected using a self-reporting survey. Respondents answered questions about record retention policies, the responsibility of health information professionals in policy administration, record retention periods, factors that determine retention periods, and other information about health record retention practices.

Rinehart-Thompson, Laurie A.

2008-01-01

319

SUPPORTING TEACHERS TO INCREASE RETENTION  

Microsoft Academic Search

Several national reports have identified the need to increase the pool of highly qualified mathematics teachers as a way to improve mathematics education. However, providing high quality mathematics education for all students goes beyond the recruitment of knowledgeable teachers. This working group is designed to offer an opportunity to examine the role that professional development and support play in the

Axelle Faughn; Terran Felter; Barbara Pence

320

Benchmark Factors in Student Retention.  

ERIC Educational Resources Information Center

The first purpose of this study was to identify significant factors affecting the first benchmark in retaining students in college--the decision to enroll in the first fall semester after orientation. The second purpose was to examine enrollment decisions at the second benchmark--the decision to re-enroll in the second fall semester after freshman…

Waggener, Anna T.; Smith, Constance K.

321

Comparison of the Retentive Property and Dentinal Crazing Ability of Retention Pins and Machinist's Taps  

Microsoft Academic Search

A comparison was made of the dentinal crazing formation and pull-out strength of conventional retention pins and modified machinist's taps. Modified machinist's taps produced less dentinal crazing in wet, fresh, and dried dentin than the conventional retention pins. Modified taps have sufficient pull-out strength to retain restorations on teeth with fresh dentin, in clinical situations.

Kai Chiu Chan; Carl W. Svare; R. H. Williams; Mohamed A. Khowassah

1974-01-01

322

The Retention of Minority Engineering Students. Report on the 1981-82 NACME Retention Research Program.  

ERIC Educational Resources Information Center

To help engineering schools improve their minority student retention rates, the National Action Council for Minorities in Engineering (NACME) undertook a Retention Research Program. The program consisted of two parts. First, NACME funded 11 projects which planned to add to or modify one or more minority student support services. Second, NACME used…

Penick, Benson E.; Morning, Carole

323

Common metrics for human-robot interaction  

Microsoft Academic Search

This paper describes an effort to identify common metrics for task-oriented human-robot interaction (HRI). We begin by discussing the need for a toolkit of HRI metrics. We then describe the framework of our work and identify important biasing factors that must be taken into consideration. Finally, we present suggested common metrics for standardization and a case study. Preparation of a

Aaron Steinfeld; Terrence Fong; David B. Kaber; Michael Lewis; Jean Scholtz; Alan C. Schultz; Michael A. Goodrich

2006-01-01

324

Employee retention: a customer service approach.  

PubMed

Employee retention is a huge problem. There are staff shortages in radiology because not enough people are entering the profession; too many people are leaving the profession for retirement, higher-paying jobs or jobs with less stress; and there are not enough opportunities for career advancement. Staff shortages are exacerbated by difficulty in retaining people who enter the profession. While much work has been focused on recruitment and getting more people "in the front door," I suggest that the bulk of future efforts be focused on employee retention and "closing the back door." Employee retention must be an ongoing process, not a program. Approaches to employee retention that focus on external things, i.e., things that the company can do to or for the employee, generally are not successful. The truth is that employee retention processes must focus on what the employee gets out of the job. The process must be a benefits-based approach that helps employees answer the question, "What's in it for me?" The retention processes must be ongoing and integrated into the daily culture of the company. The best way to keep your employees is to treat them like customers. Customer service works for external customers. We treat them nicely. We work to satisfy them. We help them achieve their goals. Why not do the same for our employees? If positive customer service policies and practices can satisfy and keep external customers, why not adapt these policies and practices for employees? And, there is a service/satisfaction link between employee retention and higher levels of customer satisfaction. Customers prefer dealing with the same employees over and over again. Employee turnover destroys a customer's confidence in the company. Just like a customer does not want to have to "train and educate" a new provider, they do not want to do the same for your "revolving door" employees. So, the key is to keep employees so they in turn will help you keep your customers. Because the techniques of this process mirror the activities of customer service and customer relationship management, I call the combined process C/ERM for customer/employee relationship management. Both activities must be going on simultaneously to create a loyalty link that ensures customer satisfaction and retention through employee service, satisfaction and retention. PMID:12080928

Gerson, Richard F

325

Liposome retention in size exclusion chromatography  

PubMed Central

Background Size exclusion chromatography is the method of choice for separating free from liposome-encapsulated molecules. However, if the column is not presaturated with lipids this type of chromatography causes a significant loss of lipid material. To date, the mechanism of lipid retention is poorly understood. It has been speculated that lipid binds to the column material or the entire liposome is entrapped inside the void. Results Here we show that intact liposomes and their contents are retained in the exclusion gel. Retention depends on the pore size, the smaller the pores, the higher the retention. Retained liposomes are not tightly fixed to the beads and are slowly released from the gels upon direct or inverted eluent flow, long washing steps or column repacking. Further addition of free liposomes leads to the elution of part of the gel-trapped liposomes, showing that the retention is transitory. Trapping reversibility should be related to a mechanism of partitioning of the liposomes between the stationary phase, water-swelled polymeric gel, and the mobile aqueous phase. Conclusion Retention of liposomes by size exclusion gels is a dynamic and reversible process, which should be accounted for to control lipid loss and sample contamination during chromatography.

Ruysschaert, Tristan; Marque, Audrey; Duteyrat, Jean-Luc; Lesieur, Sylviane; Winterhalter, Mathias; Fournier, Didier

2005-01-01

326

Modelling of arsenic retention in constructed wetlands.  

PubMed

A new model was developed in order to simulate the most significant arsenic retention processes that take place in constructed wetlands (CWs) treating high arsenic waters. The present contribution presents the implementation phases related to plants (arsenic uptake and accumulation, root arsenic adsorption, and root oxygen release), showing the first simulation results of the complete model. Different approaches with diverse influent configurations were simulated. In terms of total arsenic concentrations in effluent, the simulated data closely matched the data measured in all evaluated cases. The iron and arsenic species relationships, and the arsenic retention percentages obtained from simulations, were in agreement with the experimental data and literature. The arsenic retention efficiency increased whenever a new phase was implemented, reaching a maximum efficiency range of 85-95%. According to the quality of the obtained results, it can be considered that the implementation of all steps of RCB-ARSENIC provided reasonably good response values. PMID:23994963

Llorens, Esther; Obradors, Joshua; Alarcón-Herrera, María Teresa; Poch, Manel

2013-08-09

327

Identifying High Performance ERP Projects  

Microsoft Academic Search

Learning from high performance projects is crucial for software process improvement. Therefore, we need to identify outstanding projects that may serve as role models. It is common to measure productivity as an indicator of performance. It is vital that productivity measurements deal correctly with variable returns to scale and multivariate data. Software projects generally exhibit variable returns to scale, and

Erik Stensrud; Ingunn Myrtveit

2003-01-01

328

Influence of psychosocial factors on postpartum weight retention.  

PubMed

For some women, pregnancy may increase the risk of future obesity with consequences for health and well-being. Psychosocial factors may be partly responsible for this. The aim of this study was to examine the association between psychosocial factors during pregnancy and postpartum weight retention (PPWR) at 6 and 18 months. A total of 37,127 women in The Danish National Birth Cohort (DNBC; 1996-2002) participated in four telephone interviews before and after delivery. They gave information about their experience of distress, depression and anxiety, social support, and psychosocial burdens during pregnancy. PPWR was defined as retention ? 5 kg at 6 and 18 months postpartum according to a woman's prepregnancy weight. The associations were examined by use of logistic regression and presented as odds radios with 95% confidence intervals. Women who were more likely to feel depressed/anxious or distressed during pregnancy had a higher risk of PPWR at 6 months (1.35 (1.27; 1.44) and 1.30 (1.22; 1.38)) and 18 months (1.34 (1.24; 1.45) and 1.32 (1.23; 1.42)). Likewise, women who felt burdened by their economy or working situation had a higher risk of PPWR as did women with the lowest incomes or less education. Women who reported a high level of distress or depression/anxiety both during pregnancy and in the first 6 months of motherhood had the highest risk of PPWR 18 months postpartum (1.54 (1.39; 1.71) and 1.49 (1.32; 1.69), respectively). Feeling distressed, depressed, or anxious during pregnancy was associated with higher PPWR as was personal and economical burdens. Adverse psychosocial characteristics may be a common determinant of weight retention after childbirth. PMID:20706201

Pedersen, Pernille; Baker, Jennifer L; Henriksen, Tine B; Lissner, Lauren; Heitmann, Berit L; Sørensen, Thorkild I A; Nohr, Ellen A

2010-08-12

329

An Evaluation of Coded Wire and Elastomer Tag Performance in Juvenile Common Snook under Field and Laboratory Conditions  

Microsoft Academic Search

From 1997 to 2002, retention of coded wire tags (CWTs) and visible implant elastomer (VIE) tags was evaluated in a series of stock enhancement studies with common snook Centropomus undecimalis (60–230 mm fork length (FL)). These experiments were conducted in both field and laboratory settings in Sarasota, Florida. Retention rates of CWTs were stable after 30 d and remained greater

Nathan P. Brennan; Kenneth M. Leber; H. Lee Blankenship; John M. Ransier; Roger DeBruler Jr

2005-01-01

330

Sulfonate retention and residual oil saturation  

SciTech Connect

An empirical relationship between sulfonate retention and final residual oil saturation achieved by a micellar-polymer oil recovery process was found. Using this relationship and certain assumptions, expressions were derived for predicting oil recovery performance in core flood experiments. The equations contain two experimental constants. One is sulfonate retention. The other is a factor related to the oil recovery efficiency of the sulfonate slug in cores and is specific to both the slug and core material. This same relationship applies to both linear and radial cores. The equations so derived predict nonlinear scaling effects. These effects have been demonstrated in laboratory core floods. 8 refs.

Presley, C.T.

1981-01-01

331

Sulfonate retention and residual oil saturation  

SciTech Connect

This paper describes an empirical relationship between sulfonate retention and final residual oil saturation achieved by a micellar/polymer oil-recovery process. Using this relationship and certain assumptions, one can derive expressions for predicting oil recovery performance in core flood experiments. The equations contain two experimental constants: (1) sulfonate retention and (2) a factor related to the oil-recovery efficiency of the sulfonate slug in cores, specific to both the slug and core material. This same relationship applies to both linear and radial cores. The equations derived predict nonlinear scaling effects. These effects have been demonstrated in laboratory core floods.

Presley, C.T.

1983-04-01

332

Sulfonate retention and residual oil saturation  

SciTech Connect

This paper describes an empirical relationship between sulfonate retention and final residual oil saturation achieved by a micellar/polymer oil-recovery process. Using this relationship and certain assumptions, one can derive expressions for predicting oil recovery performance in coreflood experiments. The equations contain two experimental constants: sulfonate retention and a factor related to the oil-recovery efficiency of the sulfonate slug in cores, specific to both the slug and core material. This same relationship applies to both linear and radial cores. The equations derived predict nonlinear scaling effects. These effects have been demonstrated in laboratory corefloods.

Presley, C.T.

1983-04-01

333

Power system commonality study  

Microsoft Academic Search

A limited top level study was completed to determine the commonality of power system\\/subsystem concepts within potential lunar and Mars surface power system architectures. A list of power system concepts with high commonality was developed which can be used to synthesize power system architectures which minimize development cost. Examples of potential high commonality power system architectures are given in this

Franklin D. Littman

1992-01-01

334

Canonical Commonality Analysis.  

ERIC Educational Resources Information Center

Commonality analysis is a method of partitioning variance that has advantages over more traditional "OVA" methods. Commonality analysis indicates the amount of explanatory power that is "unique" to a given predictor variable and the amount of explanatory power that is "common" to or shared with at least one predictor variable. This paper outlines…

Leister, K. Dawn

335

Short-Term Effects of Grade Retention on the Growth Rate of Woodcock-Johnson III Broad Math and Reading Scores  

ERIC Educational Resources Information Center

|We investigated the effects of grade retention in first grade on the growth of the Woodcock-Johnson broad mathematics and reading scores over three years using linear growth curve modeling on an academically at-risk sample. A large sample (n=784) of first grade children who were at risk for retention was initially identified based on low literacy…

Wu, Wei; West, Stephen G.; Hughes, Jan N.

2008-01-01

336

Experimental analysis of retention forces of different magnetic devices for bone-anchored auricular facial prostheses.  

PubMed

The aim of this study was to determine which combination of differently designed magnetic abutments provides the best retention for an auricular prosthesis. The withdrawal forces of eight combinations of abutments were measured and results compared. There was a significantly higher withdrawal force in arrangements containing three magnets over only two. The highest withdrawal force was found in the combination of one telescopic magnet and two large spherical magnets (median: 7.69 N), whereas two telescopic magnets alone showed the lowest withdrawal force (3.41 N). The use of two conical magnets increased retention slightly, but the median retention force remained the same (3.41 N). The commonly used combination of two small spherical magnets and one telescopic magnet showed the lowest retention of combinations consisting of three magnets (4.94 N). There seems to be no difference in median withdrawal force if a conical magnet instead of a telescopic magnet is used. The withdrawal force at a 45 degrees angle was about 10% higher than the vertical force but the difference was not significant. The rupture force needed to tear the magnet completely out of the silicone was 240.6-519.7 N (mean 331.74 N) and therefore over 10 times higher than magnetic retention. PMID:18440779

Voigt, A; Christ, S; Klein, M

2008-04-28

337

Identification of recruitment and retention strategies for rehabilitation professionals in Ontario, Canada: results from expert panels  

PubMed Central

Background Demand for rehabilitation services is expected to increase due to factors such as an aging population, workforce pressures, rise in chronic and complex multi-system disorders, advances in technology, and changes in interprofessional health service delivery models. However, health human resource (HHR) strategies for Canadian rehabilitation professionals are lagging behind other professional groups such as physicians and nurses. The objectives of this study were: 1) to identify recruitment and retention strategies of rehabilitation professionals including occupational therapists, physical therapists and speech language pathologists from the literature; and 2) to investigate both the importance and feasibility of the identified strategies using expert panels amongst HHR and education experts. Methods A review of the literature was conducted to identify recruitment and retention strategies for rehabilitation professionals. Two expert panels, one on Recruitment and Retention and the other on Education were convened to determine the importance and feasibility of the identified strategies. A modified-delphi process was used to gain consensus and to rate the identified strategies along these two dimensions. Results A total of 34 strategies were identified by the Recruitment and Retention and Education expert panels as being important and feasible for the development of a HHR plan for recruitment and retention of rehabilitation professionals. Seven were categorized under the Quality of Worklife and Work Environment theme, another seven in Financial Incentives and Marketing, two in Workload and Skill Mix, thirteen in Professional Development and five in Education and Training. Conclusion Based on the results from the expert panels, the three major areas of focus for HHR planning in the rehabilitation sector should include strategies addressing Quality of Worklife and Work Environment, Financial Incentives and Marketing and Professional Development.

Tran, Diem; Hall, Linda McGillis; Davis, Aileen; Landry, Michel D; Burnett, Dawn; Berg, Katherine; Jaglal, Susan

2008-01-01

338

Retention and Access Issues Affecting Black Women Attending Predominantly White Institutions  

ERIC Educational Resources Information Center

|This study examined the self-reported experiences of Black, female, undergraduate students at a small, predominantly White, Midwestern college in the United States in order to identify factors affecting retention. Specific attention was paid to how participants perceived the effects of personal and institutional factors in relation to their…

De War, Joshua J.

2009-01-01

339

Beyond the Labor Market Paradigm: A Social Network Perspective on Teacher Recruitment and Retention  

ERIC Educational Resources Information Center

This article identifies limits of the dominant labor market perspective (LMP) in research on teacher recruitment and retention and describes how research that incorporates a social network perspective (SNP) can contribute to the knowledge base and development of teacher education, staffing, and professional development approaches. A discussion of…

Baker-Doyle, Kira

2010-01-01

340

An Assessment of Barriers and Strategies for Recruitment and Retention of a Diverse Graduate Student Population  

ERIC Educational Resources Information Center

The purpose of this exploratory qualitative investigation was to: a) describe the barriers of recruitment and retention of diverse graduate student population at one of the predominantly white universities (PWUs) in the Midwestern US as perceived by the program coordinators and directors and b) identify successful strategies for improving the…

Quarterman, Jerome

2008-01-01

341

Improving Minority Retention in Higher Education: A Search for Effective Institutional Practices.  

ERIC Educational Resources Information Center

Programs and policies at four-year majority white institutions with good minority retention rates are examined, and factors contributing to their success that are adaptable to other sites are identified. Identification of the institutions used in the study was based on an objective statistical procedure and expert nomination. The four institutions…

Clewell, Beatriz C.; Ficklen, Myra S.

342

Talent management : A strategy for improving employee recruitment, retention and engagement within hospitality organizations  

Microsoft Academic Search

Purpose – The purpose of this article is to clarify what is meant by talent management and why it is important (particularly with respect to its affect on employee recruitment, retention and engagement), as well as to identify factors that are critical to its effective implementation. Design\\/methodology\\/approach – This article is based on a review of the academic and popular

Julia Christensen Hughes; Evelina Rog

2008-01-01

343

Retention in Methadone Maintenance Treatment Programs, Connecticut and Massachusetts, 1990 – 1993  

Microsoft Academic Search

The goal of this study was to identify factors associated with six- and 12-month retention in methadone maintenance treatment programs (MMTPs) in Massachusetts and Connecticut. Data was obtained from 674 participants, clinic records, and clinic staff. Ethnographic and logistic regression analyses were conducted. Overall, 69% and 48% of the clients remained in treatment at six months and 12 months, respectively.

Robin J. MacGowan; Nancy M. Swanson; Robert M. Brackbill; Deborah L. Rugg; Thomas Barker; Susan Molde

1996-01-01

344

Faculty Recruitment and Retention: A Case Study of the Chair's Role.  

ERIC Educational Resources Information Center

|This document states that many studies have identified faculty recruitment as a specific job responsibility of college department chairs. Because the recruitment process is time consuming and costly, the chair must also ensure that recruitment leads to retention. This paper closely examines what strategies academic chairs use to recruit and…

Miller, Michael; Jackson, JoAnne C.; Pope, Myron L.

345

‘Hanging on a Little Thin Line’: Barriers to Progression and Retention in Social Work Education  

Microsoft Academic Search

Identifying the reasons why students leave higher education without completing their studies has become an increasingly important issue in higher education in the United Kingdom. This paper reports on a series of interviews held with social work students, social work educators, and higher education staff with responsibilities for recruitment and retention in four English higher education institutions (HEIs). The interviews

Jo Moriarty; Jill Manthorpe; Bharat Chauhan; Gwynne Jones; Helen Wenman; Shereen Hussein

2009-01-01

346

Minority Retention: Innovative Programs - The Broward Community College/Broward Manpower Council Work Experience Program.  

ERIC Educational Resources Information Center

|This report is focused on retention of minority students at Broward Community College. Convinced that identifiable minorities can progress through the college and its programs if they receive appropriate assistance, Broward Community College along with Broward Manpower Council designed a work experience program for full-time students who can work…

DiFede, Pat; Edwards, Larcelous, Jr.

347

Correlates of Retention for African-American Males in Community Colleges.  

ERIC Educational Resources Information Center

|Analyzed data for three cohorts of male, African-American community college students in a longitudinal design for three semesters, and used logistic regression to identify factors that best predict retention. Found that high school grades, age, number of courses, a positive view of personal skills, clear high goals, and the early identification…

Hagedorn, Linda Serra; Maxwell, William; Hampton, Preston

2002-01-01

348

Increasing One-Year Retention Rates by Focusing on Academic Competence: An Empirical Odyssey.  

ERIC Educational Resources Information Center

|Chronicles the 5-year effort of a comprehensive student development and advising center to identify the most effective support programs for increasing one-year retention rates for first-time freshmen. The progression from intrusive advising programs to integrated and systematic learning skills instruction resulted in substantial gains in…

Ryan, Michael P.; Glenn, Patricia A.

2003-01-01

349

The Drivers of Student Enrolment and Retention: A Stakeholder Perception Analysis in Higher Education  

ERIC Educational Resources Information Center

|This study identified the drivers of student participation in the academic programmes of a South African university department. First, it explored the determinants of student enrolment and retention from earlier research and literature. Second, it discussed the utility of Q methodology in the identification of subjective perception. Finally, it…

Angelopulo, George

2013-01-01

350

Factors Related to the Recruitment, Training, and Retention of Family Child Care Providers.  

ERIC Educational Resources Information Center

Identified factors related to the recruitment, training, and retention of family child care (FCC) providers in two rural communities who participated in an FCC training program. Findings point to the relative success of efforts to recruit and train high quality family child care providers and the relative difficulty of retaining these providers…

Mueller, Charles W.; Orimoto, Lisa

1995-01-01

351

Factors associated with one-year retention in a community college  

Microsoft Academic Search

This study sought to evaluate preenrollment variables as predictors of one-year retention of first-time students in a community college. The purpose was to use information that is typically available when a student begins his or her college program and determine if this information can help identify students who are more likely to drop out within their first year. Based on

Mary Jane Feldman

1993-01-01

352

Generation Y Student-Teachers' Motivational Factors: Retention Implications for K-12 Educational Leaders  

ERIC Educational Resources Information Center

|Generation Y represents a growing number of student-teachers who will impact the future of educational practice, yet little research has been conducted for this demographic group. The purpose of this mixed-method study was to identify motivational factors of neophyte teachers and the retention implications these findings had on Kindergarten…

Bontempo, Brian

2010-01-01

353

Using workforce structures to enable staff retention and development : An academic library case study  

Microsoft Academic Search

Purpose – The purpose of this study is to examine the practical context and implications surrounding a workforce review undertaken by the University of Tasmania (UTAS) Library and the measures taken to address the key problems it identified, particularly those relating to the recruitment and retention of new and existing liaison librarians. Design\\/methodology\\/approach – Workforce planning methodologies were used to

Vanessa Warren

2011-01-01

354

The Employment Retention and Advancement Project: Paths to Advancement for Single Parents. Executive Summary  

ERIC Educational Resources Information Center

|Between 2000 and 2003, the Employment Retention and Advancement (ERA) project identified and implemented a diverse set of innovative models designed to promote employment stability and wage or earnings progression among low-income individuals, mostly current or former welfare recipients. The project's goal was to determine which strategies could…

Miller, Cynthia; Deitch, Victoria; Hill, Aaron

2010-01-01

355

The Employment Retention and Advancement Project: Paths to Advancement for Single Parents  

ERIC Educational Resources Information Center

|Between 2000 and 2003, the Employment Retention and Advancement (ERA) project identified and implemented a diverse set of innovative models designed to promote employment stability and wage or earnings progression among low-income individuals, mostly current or former welfare recipients. The project's goal was to determine which strategies could…

Miller, Cynthia; Deitch, Victoria; Hill, Aaron

2010-01-01

356

Historical Review and Appraisal of Research on the Learning, Retention, and Transfer of Human Motor Skills  

Microsoft Academic Search

This review of human motor skills is historical and critical, and starts about 100 years ago. Three historical periods are identified. The main topics are knowledge of results, distribution of practice, transfer of training, retention, and individual differences in motor learning. Basic research is emphasized, but applied research is included also. The article concludes with projections for the future that

Jack A. Adams

1987-01-01

357

Predictors of first semester attrition and their relation to retention of generic associate degree nursing students  

Microsoft Academic Search

In community college nursing programs the high rate of attrition was a major concern to faculty and administrators. Since first semester attrition could lead to permanent loss of students and low retention in nursing programs, it was important to identify at-risk students early and develop proactive approaches to assist them to be successful. The goal of nursing programs was to

Donna Katherine Jackson

2002-01-01

358

Predictors of Retention among Men Attending STI Clinics in HIV Prevention Programs and Research: A Case Control Study in Pune, India  

PubMed Central

Background Retention is critical in HIV prevention programs and clinical research. We studied retention in the three modeled scenarios of primary prevention programs, cohort studies and clinical trials to identify predictors of retention. Methodology/Principal Findings Men attending Sexually Transmitted Infection (STI) clinics (n?=?10, 801) were followed in a cohort study spanning over a ten year period (1993–2002) in Pune, India. Using pre-set definitions, cases with optimal retention in prevention program (n?=?1286), cohort study (n?=?940) and clinical trial (n?=?896) were identified from this cohort. Equal number of controls matched for age and period of enrollment were selected. A case control analysis using conditional logistic regression was performed. Being employed was a predictor of lower retention in all the three modeled scenarios. Presence of genital ulcer disease (GUD), history of commercial sex work and living away from the family were predictors of lower retention in primary prevention, cohort study and clinical trial models respectively. Alcohol consumption predicted lower retention in cohort study and clinical trial models. Married monogamous men were less likely to be retained in the primary prevention and cohort study models. Conclusions/Significance Predicting potential drop-outs among the beneficiaries or research participants at entry point in the prevention programs and research respectively is possible. Suitable interventions might help in optimizing retention. Customized counseling to prepare the clients properly may help in their retention.

Sahay, Seema; Gupte, Nikhil; Brahme, Radhika G.; Nirmalkar, Amit; Bembalkar, Shilpa; Bollinger, Robert C.; Mehendale, Sanjay

2011-01-01

359

Laboratory Talk and Women's Retention Rates in Science  

NASA Astrophysics Data System (ADS)

Despite initiatives designed to increase women's participation in science, their attrition rates remain high. To improve women's retention rates, this article proposes a closer examination of the culture of science to discover what it is about it that women might find uncomfortable, that could create a "chilly climate" for them. A 2-year ethnographic study of a university research laboratory group was conducted that identified the group's communication style as problematic for some female members. A weekly meeting was selected that exemplifies several of the dynamics of the communication style that women at this laboratory had found problematic. An analysis of this meeting identified specific features of the talk and examined research findings from the fields of language and gender research and laboratory studies to explain why women might find these features problematic.

Conefrey, Theresa

360

Common Bayesian models for common cognitive issues.  

PubMed

How can an incomplete and uncertain model of the environment be used to perceive, infer, decide and act efficiently? This is the challenge that both living and artificial cognitive systems have to face. Symbolic logic is, by its nature, unable to deal with this question. The subjectivist approach to probability is an extension to logic that is designed specifically to face this challenge. In this paper, we review a number of frequently encountered cognitive issues and cast them into a common Bayesian formalism. The concepts we review are ambiguities, fusion, multimodality, conflicts, modularity, hierarchies and loops. First, each of these concepts is introduced briefly using some examples from the neuroscience, psychophysics or robotics literature. Then, the concept is formalized using a template Bayesian model. The assumptions and common features of these models, as well as their major differences, are outlined and discussed. PMID:20658175

Colas, Francis; Diard, Julien; Bessière, Pierre

2010-07-24

361

Does Retention Help? Perspectives after Three Years.  

ERIC Educational Resources Information Center

|The Austin Independent School District Office of Research and Evaluation (AISD-ORE) has recently completed a three year study of the effects of retention on elementary students. As in other studies comparing the academic achievement of elementary retainees and similar students not retained, findings indicated that promoted students generally show…

Schuyler, Nancy Baenen

362

Lung retention of cerium in humans.  

PubMed Central

A retrospective study was conducted to evaluate lung retention of particles containing cerium in subjects with and without previous occupational exposure to mineral dusts. Analytical transmission electron microscopy was performed on 459 samples of bronchoalveolar lavage (BAL) fluid and 75 samples of lung tissue. Study of the distribution of mineralogical species in human samples showed that particles containing cerium were encountered in less than 10% of subjects. The proportion of subjects with particles containing cerium in their biological samples was not different between controls and subjects with previous occupational exposure to fibrous or nonfibrous mineral dusts. This was considered as the background level of lung retention of cerium in the general population. By contrast, determination of the absolute concentration of particles containing cerium in BAL fluid and lung tissue samples showed that 1.2% (from BAL fluid) and 1.5% (from lung tissue) of subjects with previous exposure to mineral particles had high lung retention of particles containing cerium. This study is believed to be the first one in which lung retention of cerium was estimated in the general population.

Pairon, J C; Roos, F; Iwatsubo, Y; Janson, X; Billon-Galland, M A; Bignon, J; Brochard, P

1994-01-01

363

Metals Retention in Constructed Wetland Sediments  

SciTech Connect

The A-01 wetland treatment system (WTS) was designed to remove metals from the effluent at the A-01 NPDES outfall at the Savannah River Site, Aiken, SC. Sequential extraction data was used to evaluate remobilization and retention of Cu, Pb, Zn, Mn, and Fe in the wetland sediment. Remobilization of metals was determined by the Potentially Mobile Fraction (PMF) and metal retention by the Recalcitrant Factor (RF). The PMF, which includes water soluble, exchangeable, and oxides fractions, is the contaminant fraction that has the potential to enter into the mobile aqueous phase under changeable environmental conditions. PMF values were low for Cu, Zn and Pb (about 20 percent) and high for Fe and Mn (about 60 to 70 percent). The RF, which includes crystalline oxides, sulfides or silicates and aluminosilicates, is the ratio of strongly bound fractions to the total concentration of elements in sediment. RF values were about 80 percent for Cu, Zn and Pb, indicating high retention in the sediment and 30 percent to above 40 percent for Fe and Mn indication low retention.

KNOX, ANNA

2004-10-27

364

Nitrogen Saturation in Highly Retentive Watersheds?  

Microsoft Academic Search

Watershed managers are often concerned with minimizing the amount of N delivered to N-limited estuaries and coastal zones. A major concern is that watersheds might reach N saturation, in which N delivered to coastal zones increases due to declines in the efficiency of N retention despite constant or even reduced N inputs. We have quantified long-term changes in N inputs

M. L. Daley; W. H. McDowell

2009-01-01

365

5 CFR 293.511 - Retention schedule.  

Code of Federal Regulations, 2010 CFR

...Retention schedule. (a) Temporary EMFS records must not be placed in a newly-created EMF for a separating employee and must be removed from an already existing EMF before its transfer to another agency or to the NPRC. Such records must be...

2013-01-01

366

Shaping Retention from Research to Practice  

ERIC Educational Resources Information Center

|This article presents seven guidelines to direct professional practice aimed toward the improvement of institutional student retention rates. For each of the seven guidelines, specific recommendations to provide direction to the enactment of the focal guideline are described. These seven guidelines spring from empirical studies of campus-based…

Braxton, John M.; Brier, Ellen M.; Steele, Stephanie Lee

2008-01-01

367

MAKING STUDENT RETENTION AN INSTITUTIONAL PRIORITY  

Microsoft Academic Search

A study was conducted to determine the reasons behind the unusually high rate of student attrition at Mountain Empire Community College. The results, which suggested that work and family conflicts were the primary contributors to attrition, led to the formation of a task force that was charged with the development of a comprehensive student retention plan. A college?wide retreat involving

Debbie L. Sydow; Robert H. Sandel

1998-01-01

368

Recruitment & Retention: Special Report, Part II.  

ERIC Educational Resources Information Center

Articles on Black college faculty recruitment and retention and student financial aid examines these issues: senior Black faculty and diversity issues, recruiting Black faculty to small towns, the supply of doctorates, doctoral fellowship programs targeting minorities, financial aid information on the Internet, and an online college…

Black Issues in Higher Education, 1999

1999-01-01

369

Recruitment and Retention for Stepfamily Education  

Microsoft Academic Search

To assist scholars and practitioners involved with marriage and relationship education for diverse audiences, this article establishes new and verifies already existing strategies to recruit and retain couples in stepfamilies. We examine recruitment and retention strategies used by 10 different agencies who offer the Smart Steps program to low-income stepfamilies. Qualitative interviews were conducted with 20 facilitators and 40 participants.

Linda Skogrand; Katie Henderson Reck; Brian Higginbotham; Francesca Adler-Baeder; Loni Dansie

2010-01-01

370

Nursing Crisis: Retention Strategies for Hospital Administrators  

Microsoft Academic Search

High nursing turnover and shortages are symptomatic of the problems faced by many hospitals around the world. While the recruitment of agency and foreign nurses may provide temporary relief to staffing issues, hospital administrators are faced with the perennial problem of losing highly trained nurses with many years of experience. This paper discusses a number of retention strategies for hospital

Christopher C. A. Chan; Ken McBey; Mark Basset; Michael O'Donnell; Richard Winter

371

Moisture retention curve in landfilled waste  

Microsoft Academic Search

Moisture content and moisture movement are key factors in controlling the progress and rate of biodegradation within a landfill as it is the aqueous environment that facilitates the transport of nutrients and microbes. The modelling of infiltration and water movement requires information on the moisture retention and hydraulic conductivity properties, usually in the form of empirical functions such as those

Y. Kazimoglu; J. McDougall; I. Pyrah

372

Chemical retention during dry growth riming  

Microsoft Academic Search

Partitioning of volatile chemicals among the gas, liquid, and solid phases during the conversion of liquid water to ice in clouds can impact distributions of chemicals in precipitation and in the poststorm troposphere. In this paper, we extend a theoretical scaling model of chemical retention during hydrometeor freezing to all dry growth riming conditions. We account for spreading of drops

A. L. Stuart; M. Z. Jacobson

2004-01-01

373

32 CFR 240.6 - Retention program.  

Code of Federal Regulations, 2011 CFR

...may apply for a master's or doctoral degree program; enlisted...There are no part-time doctoral programs. All candidates...travel costs and necessary position back-fill for individuals...Retention students shall fulfill post-academic service...

2013-07-01

374

WATER RETENTION PEDOTRANSFER FUNCTION FOR A HORIZON  

Technology Transfer Automated Retrieval System (TEKTRAN)

Reports about the relationship between soil water retention and organic carbon content are contradictory. We hypothesized that this relationship is affected by both proportions of textural components and amount of organic carbon. We examined the relationship between total clay, sand and silt, textur...

375

Relationship of Personality Traits to Student Retention  

ERIC Educational Resources Information Center

|Carl Jung's theory of psychological types has been the basis for the development of personality categorization, including tests such as Myers-Briggs Type Indicator (MBTI). This study analyzed the extent of the relationship between MBTI and Tinto (1993) retention factors that influence Oriental medicine students' choice of staying or dropping out…

Liang, John Paul

2010-01-01

376

Beginning English Teacher Attrition, Mobility, and Retention  

Microsoft Academic Search

Although much research on teacher attrition and mobility exists, few researchers have addressed English teachers specifically. The present authors, using the 1999-2000 Schools and Staffing Survey (SASS) and the Teacher Follow-Up Survey (TFS; National Center for Education Statistics, 2005) examined individual and school characteristics and mentoring and induction activities that affect beginning English teachers' attrition, mobility, and retention. The results

Debbie L. Hahs-Vaughn; Lisa Scherff

2008-01-01

377

Student Selection and Retention in Nursing Schools.  

National Technical Information Service (NTIS)

Student selection and retention in nursing schools are analyzed on the basis of a survey of 1,439 nursing schools, 20 site visits, and a survey of 2,390 applicants to the 1974 programs of the 20 schools visited. Recruitment, screening, and selection pract...

1977-01-01

378

Mentoring and retention at a commuter campus  

Microsoft Academic Search

The purpose of the study was to determine whether a mentoring program offered to first-year commuter students at Purdue University Calumet could enhance their social and academic integration and whether this would positively impact student retention. The highest number of students drop out during the first academic year. Lack of social and academic integration has been theorized to be a

Carol M Servies

1999-01-01

379

Freshman learning communities, college performance, and retention  

Microsoft Academic Search

This paper applies a standard treatment effects model to determine that participation in Freshman Learning Communities (FLCs) improves academic performance and retention. Not controlling for individual self-selection into FLC participation leads one to incorrectly conclude that the impact is the same across race and gender groups. Accurately assessing the impact of any educational program is essential in determining what resources

Julie L. Hotchkiss; Robert E. Moore; M. Melinda Pitts

2005-01-01

380

Freshman Learning Communities, College Performance, and Retention  

Microsoft Academic Search

This paper applies a standard treatment effects model to determine that participation in Freshman Learning Communities improves academic performance and retention. Not controlling for individual self?selection into Freshman Learning Communities participation leads one to incorrectly conclude that the impact is the same across race and gender groups. Accurately assessing the impact of any educational program is essential in determining what

Julie L. Hotchkiss; Robert E. Moore; M. Melinda Pitts

2006-01-01

381

Job Performance and Retention among Welfare Recipients.  

ERIC Educational Resources Information Center

|Data from interviews with 750 employers in Chicago, Cleveland, Milwaukee, and Los Angeles were used to analyze the job performance and retention rates of recently hired welfare recipients. The 20-minute interviews focused on employers' subjective ratings of recently hired welfare recipients' job performance and whether employers experienced the…

Holzer, Harry J.; Stoll, Michael A.; Wissoker, Douglas

382

Effects of Emotional Intelligence on Teacher Retention  

ERIC Educational Resources Information Center

|This mixed methods, explanatory design study focused on determining if the emotional intelligence of principals affects the retention of new teachers. In phase one, a non-random cluster sample of 138 public school principals in the state of Louisiana was surveyed using a quantitative instrument. A Factor Analysis, Analysis of Variance (ANOVA),…

Gerald, Grant Ronald

2010-01-01

383

Foster Family Resources, Psychosocial Functioning, and Retention.  

ERIC Educational Resources Information Center

This longitudinal study examined the effect of family resources and psychosocial problems on retention for foster families. Almost 50 percent of families who started preservice training did not complete it. Families with more psychosocial problems and fewer resources were more likely to express uncertainly about continuing. These results have…

Rhodes, Kathryn W.; Orme, John G.; Cox, Mary Ellen; Buehler, Cheryl

2003-01-01

384

Goldratt's thinking process applied to employee retention  

Microsoft Academic Search

Purpose – This study seeks to investigate the nature and extent of employee retention and turnover for metropolitan police and fire departments. Design\\/methodology\\/approach – In order to maximize the system production, the weakest link must be improved and all other links in the processes regulated to the speed of the weakest link. The weakest link is the constraint. In the

Lloyd J. Taylor III; Becki Murphy; William Price

2006-01-01

385

Testing to Enhance Retention in Human Anatomy  

ERIC Educational Resources Information Center

|Recent work in cognitive psychology has shown that repeatedly testing one's knowledge is a powerful learning aid and provides substantial benefits for retention of the material. To apply this in a human anatomy course for medical students, 39 fill-in-the-blank quizzes of about 50 questions each, one for each region of the body, and four about the…

Logan, Jessica M.; Thompson, Andrew J.; Marshak, David W.

2011-01-01

386

Retention of USAF Obstetricians/Gynecologists.  

National Technical Information Service (NTIS)

Persistent low retention of USAF OB/GYNs has degraded the OB/GYN capability of several USAF medical facilities. In response to manning shortfalls, several USAF hospitals are now establishing very costly local contracts for OB/GYN services. This report exa...

S. P. Hellmann

1988-01-01

387

Retention of Electronic Fundamentals: Differences Among Topics.  

ERIC Educational Resources Information Center

|Criterion-referenced tests were used to measure the learning and retention of a sample of material taught by means of programed instruction in the Avionics Fundamentals Course, Class A. It was found that the students knew about 30 percent of the material before reading the programs, that mastery rose to a very high level on the immediate…

Johnson, Kirk A.

388

Kinesthetic retention, movement extent, and information processing  

Microsoft Academic Search

Using a lever response, kinesthetic recall of various movement lengths was studied under 3 retention interval conditions: immediate recall, 20-sec rest, and 20 sec. of information reduction activity (1.82 bits). 16 undergraduates served as Ss. The information reduction condition required S to accurately displace the lever to mimic and add pairs of angles. Increased absolute error was found in both

George E. Stelmach; Mark Wilson

1970-01-01

389

In-Vessel Retention of Molten Corium: Lessons Learned and Outstanding Issues  

SciTech Connect

In-vessel retention (IVR) of core melt is a key severe accident management strategy adopted by some operating nuclear power plants and proposed for some advanced light water reactors (ALWRs). If there were inadequate cooling during a reactor accident, a significant amount of core material could become molten and relocate to the lower head of the reactor vessel, as happened in the Three Mile Island Unit 2 (TMI-2) accident. If it is possible to ensure that the vessel head remains intact so that relocated core materials are retained within the vessel, the enhanced safety associated with these plants can reduce concerns about containment failure and associated risk. For example, the enhanced safety of the Advanced 600 MWe Pressurized Water Reactor (PWR) designed by Westinghouse (AP600), which relied upon External Reactor Vessel Cooling (ERVC) for IVR, resulted in the U.S. Nuclear Regulatory Commission (US NRC) approving the design without requiring certain conventional features common to existing Light Water Reactors (LWRs). However, it is not clear that the ERVC proposed for the AP600 could provide sufficient heat removal for higher-power reactors (up to 1500 MWe) without additional enhancements. This paper reviews efforts made and results reported regarding the enhancement of IVR in LWRs. Where appropriate, the paper identifies what additional data or analyses are needed to demonstrate that there is sufficient margin for successful IVR in high power thermal reactors.

J.L. Rempe; K.Y. Suh; F. B. Cheung; S. B. Kim

2008-03-01

390

Heterogeneity in cellular antigen retention structures.  

PubMed

The mechanism of presentation of foreign antigens to helper T lymphocytes and the nature of the structures involved in this process are not totally understood. It is well documented that this event is carried out by antigen-presenting cells (APC) (e.g., macrophages, dendritic cells, and B lymphocytes) that internalize the antigen, process it, reexpress it on their membrane surface, and present it to the T cell in the context of major histocompatibility complex class II (Ia) molecules. Recent evidence supports the hypothesis that peptide antigens associate directly with Ia molecules on the APC surface membrane. However, the characteristics of other APC membrane structures potentially involved in antigen presentation are not entirely clear. Previous studies in our laboratories identified a guinea pig macrophage membrane-bound, non-Ia-containing antigenic complex (peak A) formed upon incubation of APC with the octapeptide antigen angiotensin (AII). This complex was capable of stimulating AII-immune guinea pig T cells and thus appeared to contain the immunologically relevant form of the antigen. For this reason it was important to establish whether such complex formation with peptides occurs with other cell types and with other peptide antigens. In the present study we found that other types of cells are also capable of forming such a membrane complex with antigen (peak A) and that this event is not unique to AII. Two other peptides, alpha-melanocyte-stimulating hormone and human fibrinopeptide B, both of which are antigenic in mice, were found to form peak A with a number of murine cell lines. As in our earlier studies with guinea pig macrophages, there was no evidence from these experiments for a role for major histocompatibility complex Ia antigens in the peptide binding observed. Differences in both the amount of peak A formation and the pattern of peptide antigen degradation were found from cell line to cell line for a given peptide, and from peptide to peptide for a given cell line, suggesting cellular heterogeneity in peptide processing and retention. In addition, cross-inhibition studies indicated that there was peptide specificity in the formation of peak A perhaps suggestive of molecular heterogeneity in the structure of peak A. These results indicate that there may be several types of cell surface molecules that specifically bind and retain peptide antigens.(ABSTRACT TRUNCATED AT 400 WORDS) PMID:3680948

Betancourt, S V; Solvay, M J; Irani, D N; Thomas, D W; Nairn, R

1987-12-01

391

Staff retention and recruitment: "one great department".  

PubMed

The projected demand for healthcare workers during the next ten years has been the impetus for many organizations to develop more creative strategies to ensure adequate staffing levels in the future. In order to keep pace with service demands, the diagnostic imaging department at Valley Lutheran Medical Center (VLMC) in Mesa, Ariz., has been growing as well. Since November of 1999, the number of core FTEs increased from 54.5 to 96. As a result, efforts to retain the current employees became just as critical as efforts to recruit staff for the new positions that were created to support the expanded services. In February 2001, an AHRA seminar was held in Phoenix, which included a day-long session called "Workforce 2001: Recruitment, Selection, Retention of Quality Employees." The presenter, Clint Maun, C.S.P., emphasized the need to provide "passionate orientation" for new employees, encouraged team-based selection of new employees, and reminded the audience that new employees decide within the first three days whether or not they will stay with an organization, regardless of how long it actually takes to leave. Maun also described to the group a model for creating team effort called "One Great Unit" (OGU), which uses a "12-Week Plan" for engaging staff. For the diagnostic imaging department at VLMC, this concept was remodeled so that, instead of focusing on one modality (unit) in the department, the focus was on the whole department. The first step to creating "One Great Department" was to establish an Oversight Committee that would help define the focus of the 12-Week Teams. Five, front-line employees were recruited who represented a cross-section of the imaging department. To assist in the implementation, the director of learning and innovation at VLMC agreed to facilitate the first two meetings. The first 12-Week Team was called together in May 2001. The operational objective addressed was "improving communication inter- and intra-departmentally." Each member volunteered to take one issue to investigate. For instance, the team identified that unit secretaries used an outdated resource document for ordering radiology exams. The 2001 goal was to limit voluntary employee turnover to less than 15 percent, an aggressive goal considering that in 2000 the turnover rate was 40 percent. In January 2002, the 2001 turnover rate was 14.5 percent (Bravo!). While we accomplished our goal, there are many challenges ahead. The Arizona market is so volatile that we cannot afford to rest on any previous success. PMID:12422659

Casady, Wanda M; Dowd, Terry A

392

Scaling soil water retention functions using particle-size distribution  

NASA Astrophysics Data System (ADS)

The application of spatially distributed hydrological model is a challenging problem, particularly because of the difficulties arising in the identification of the model parameters describing the soil hydraulic properties and their spatial variability. Generally soil data are available just for a limited number of locations across the study area and very often the available data consist of soil physical and chemical properties rather than direct measurements of the soil hydraulic properties. Thus indirect methods are often required for an assessment of model parameters describing the soil hydraulic properties, based on a limited number of measurements. This study presents a methodology for assessing the variability of soil water retention from soil texture and bulk density measurements, based on a combination of the scaling approach proposed by Kosugi and Hopmans (1998) and the Arya-Paris (AP) physico-empirical pedotransfer function. The approach proposed by Kosugi and Hopmans (1998) represents the spatial variability of soil hydraulic properties by scaling factors which relate the soil hydraulic functions in any location to a single reference function, provided that soils are characterised by geometric similitude within the study area. The Arya-Paris (AP) physico-empirical pedotransfer function estimates the soil water retention from the soil particle-size distribution and bulk density. The proposed method has been evaluated in two different areas of Southern Italy. Laboratory-measured and AP-predicted reference water retention functions are compared by evaluating the lognormal distributions of the corresponding scaling factors. The method proved to be effective even with a limited number of soil samples (30-40 soil samples), provided that the study region is classified according to homogeneous soil textural classes, to ensure the geometric similitude within each soil sample set. This method can be potentially used as an effective tool for identifying homogeneous soil hydrologic response units at the catchment scale.

Nasta, P.; Chirico, G. B.; Kamai, T.; Hopmans, J. W.; Romano, N.

2009-04-01

393

Scaling soil water retention functions using particle-size distribution  

NASA Astrophysics Data System (ADS)

The application of spatially distributed hydrological model is a challenging problem, particularly because of the difficulties arising in the identification of the model parameters describing the soil hydraulic properties and their spatial variability. Generally soil data are available just for a limited number of locations across the study area and very often the available data consist of soil physical and chemical properties rather than direct measurements of the soil hydraulic properties. Thus indirect methods are often required for an assessment of model parameters describing the soil hydraulic properties, based on a limited number of measurements. This study presents a methodology for assessing the variability of soil water retention from soil texture and bulk density measurements, based on a combination of the scaling approach and the Arya-Paris (AP) physico-empirical pedotransfer function. The approach represents the spatial variability of soil hydraulic properties by scaling factors which relate the soil hydraulic functions in any location to a single reference function, provided that soils are characterised by geometric similitude within the study area. The Arya-Paris (AP) physico-empirical pedotransfer function estimates the soil water retention from the soil particle-size distribution and bulk density. The proposed method has been evaluated in two different areas of Southern Italy. Laboratory-measured and AP-predicted reference water retention functions are compared by evaluating the lognormal distributions of the corresponding scaling factors. The method proved to be effective even with a limited number of soil samples (30-40 soil samples), provided that the study region is classified according to homogeneous soil textural classes, to ensure the geometric similitude within each soil sample set. This method can be potentially used as an effective tool for identifying homogeneous soil hydrologic response units at the catchment scale.

Nasta, P.; Hopmans, J. W.; Kamai, T.; Romano, N.; Chirico, G.

2009-12-01

394

Vibrio chromosomes share common history  

PubMed Central

Background While most gamma proteobacteria have a single circular chromosome, Vibrionales have two circular chromosomes. Horizontal gene transfer is common among Vibrios, and in light of this genetic mobility, it is an open question to what extent the two chromosomes themselves share a common history since their formation. Results Single copy genes from each chromosome (142 genes from chromosome I and 42 genes from chromosome II) were identified from 19 sequenced Vibrionales genomes and their phylogenetic comparison suggests consistent phylogenies for each chromosome. Additionally, study of the gene organization and phylogeny of the respective origins of replication confirmed the shared history. Conclusions Thus, while elements within the chromosomes may have experienced significant genetic mobility, the backbones share a common history. This allows conclusions based on multilocus sequence analysis (MLSA) for one chromosome to be applied equally to both chromosomes.

2010-01-01

395

Anti-angiogenesis Enhances Intratumoral Drug Retention  

PubMed Central

The tumor vasculature delivers nutrients, oxygen, and therapeutic agents to tumor cells. Unfortunately, the delivery of anti-cancer drugs by tumor blood vessels is often inefficient and can constitute an important barrier for cancer treatment. This barrier can sometimes be circumvented by anti-angiogenesis-induced normalization of tumor vasculature. However, such normalizing effects are transient; moreover, they are not always achieved, as shown here, when 9L gliosarcoma xenografts were treated over a range of doses with the VEGF receptor-selective tyrosine kinase inhibitors axitinib and AG-028262. The suppression of tumor blood perfusion by anti-angiogenesis agents can be turned to therapeutic advantage, however, through their effects on tumor drug retention. In 9L tumors expressing the cyclophosphamide-activating enzyme P450 2B11, neoadjuvant axitinib treatment combined with intratumoral cyclophosphamide administration significantly increased tumor retention of cyclophosphamide and its active metabolite, 4-hydroxycyclophosphamide. Similar increases were achieved using other angiogenesis inhibitors, indicating that increased drug retention is a general response to anti-angiogenesis. This approach can be extended to include systemic delivery of an anti-cancer prodrug that is activated intratumorally, where anti-angiogenesis-enhanced retention of the therapeutic metabolite counterbalances the decrease in drug uptake from systemic circulation, as exemplified for cyclophosphamide. Importantly, the increase in intratumoral drug retention induced by neoadjuvant anti-angiogenic drug treatment is shown to increase tumor cell killing and substantially enhance therapeutic activity in vivo. Thus, anti-angiogenics can be used to increase tumor drug exposure and improve therapeutic activity following intratumoral drug administration, or following systemic drug administration in the case of a therapeutic agent that is activated intratumorally.

Ma, Jie; Chen, Chong-Sheng; Blute, Todd; Waxman, David J.

2011-01-01

396

Common Control System Vulnerability  

SciTech Connect

The Control Systems Security Program and other programs within the Idaho National Laboratory have discovered a vulnerability common to control systems in all sectors that allows an attacker to penetrate most control systems, spoof the operator, and gain full control of targeted system elements. This vulnerability has been identified on several systems that have been evaluated at INL, and in each case a 100% success rate of completing the attack paths that lead to full system compromise was observed. Since these systems are employed in multiple critical infrastructure sectors, this vulnerability is deemed common to control systems in all sectors. Modern control systems architectures can be considered analogous to today's information networks, and as such are usually approached by attackers using a common attack methodology to penetrate deeper and deeper into the network. This approach often is composed of several phases, including gaining access to the control network, reconnaissance, profiling of vulnerabilities, launching attacks, escalating privilege, maintaining access, and obscuring or removing information that indicates that an intruder was on the system. With irrefutable proof that an external attack can lead to a compromise of a computing resource on the organization's business local area network (LAN), access to the control network is usually considered the first phase in the attack plan. Once the attacker gains access to the control network through direct connections and/or the business LAN, the second phase of reconnaissance begins with traffic analysis within the control domain. Thus, the communications between the workstations and the field device controllers can be monitored and evaluated, allowing an attacker to capture, analyze, and evaluate the commands sent among the control equipment. Through manipulation of the communication protocols of control systems (a process generally referred to as ''reverse engineering''), an attacker can then map out the control system processes and functions. With the detailed knowledge of how the control data functions, as well as what computers and devices communicate using this data, the attacker can use a well known Man-in-the-Middle attack to perform malicious operations virtually undetected. The control systems assessment teams have used this method to gather enough information about the system to craft an attack that intercepts and changes the information flow between the end devices (controllers) and the human machine interface (HMI and/or workstation). Using this attack, the cyber assessment team has been able to demonstrate complete manipulation of devices in control systems while simultaneously modifying the data flowing back to the operator's console to give false information of the state of the system (known as ''spoofing''). This is a very effective technique for a control system attack because it allows the attacker to manipulate the system and the operator's situational awareness of the perceived system status. The three main elements of this attack technique are: (1) network reconnaissance and data gathering, (2) reverse engineering, and (3) the Man-in-the-Middle attack. The details of this attack technique and the mitigation techniques are discussed.

Trent Nelson

2005-12-01

397

Retention rates and retention predictors among graduates of Army Family Practice residency programs.  

PubMed

Accurate career retention rates for the 688 graduates of Army Family Practice residency programs over the period from 1973-1990 were determined by retrospective cohort analysis. Eight characteristics of these graduates were tested by chi-square analysis to determine if they had a predictive effect on retention: United States Military Academy attendance (USMA), Uniform Services University of the Health Science (USUHS) attendance, fellowship training, prior service, gender, first assignment, site of residency training, and spouse with history of active duty service. Overall retention was 21%. Significant predictors of retention at the p < 0.01 level (chi-square) were (1) USMA attendance, (2) USUHS attendance, (3) fellowship training, and (4) prior service. Gender, first assignment, and spouse history of active duty service were not factors. The 22% of the graduates who had at least one of the four positive predictors form two-thirds of the present career Family Physician force. PMID:7816225

Steinweg, K K

1994-07-01

398

State-dependent retention produced with estrus in rats.  

PubMed

State-dependent retention (SDR) has frequently been demonstrated with drug-induced physiological changes which apparently serve as contextual cues for memory. These support the assumption that commonly occurring endogenous dispositions play a role in memory, yet there are few reports showing SDR with states that are likely to be part of an organism's natural experiences. To determine if behavioral estrus could produce SDR, ovariectomized female rats were rendered estrus via hormone injections or remained anestrus via placebo injections, trained with quinine-laced apple juice, and later tested while in the same or different state for reactions towards pure juice. SDR was not evident in the amount of juice consumed; however, those tested in the same state as the initial experience were slower to initiate drinking than those tested in a different state revealing a state-dependent influence on memory related to phases of the ovarian cycle. PMID:7610126

Costanzo, D J; Riccio, D C; Kissinger, S

1995-05-01

399

Using Logistic Regression To Identify New "At-Risk" Freshmen.  

ERIC Educational Resources Information Center

A logit model was developed, using historical data, to identify characteristics inherent in a college student's decision to withdraw from college. Once the model was derived, predicted probabilities of retention for an incoming freshman class were computed, and a program for monitoring high-risk students' progress was developed. (Author/MSE)

Nichols, Jerry L.; Orehovec, Paul M.; Ingold, Scott

1999-01-01

400

12 CFR Appendix A to Part 749 - Record Retention Guidelines  

Code of Federal Regulations, 2010 CFR

...Record Retention Guidelines Credit unions often look to NCUA for guidance...this area, but as an aid to credit unions it is publishing this appendix...retention. NCUA recognizes that credit unions must strike a balance between the...

2009-01-01

401

12 CFR Appendix A to Part 749 - Record Retention Guidelines  

Code of Federal Regulations, 2010 CFR

...Record Retention Guidelines Credit unions often look to NCUA for guidance...this area, but as an aid to credit unions it is publishing this appendix...retention. NCUA recognizes that credit unions must strike a balance between the...

2010-01-01

402

12 CFR Appendix A to Part 749 - Record Retention Guidelines  

Code of Federal Regulations, 2010 CFR

...Record Retention Guidelines Credit unions often look to NCUA for guidance...this area, but as an aid to credit unions it is publishing this appendix...retention. NCUA recognizes that credit unions must strike a balance between the...

2012-01-01

403

49 CFR 219.901 - Retention of alcohol testing records.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Retention of alcohol testing records. 219.901 Section...DEPARTMENT OF TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE Recordkeeping Requirements § 219.901 Retention of alcohol testing records. (a) General...

2012-10-01

404

49 CFR 219.901 - Retention of alcohol testing records.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Retention of alcohol testing records. 219.901 Section...DEPARTMENT OF TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE Recordkeeping Requirements § 219.901 Retention of alcohol testing records. (a) General...

2011-10-01

405

7 CFR 1210.530 - Retention period for records.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Retention period for records. 1210.530 Section 1210.530 Agriculture Regulations of the Department...PROMOTION PLAN Rules and Regulations Records § 1210.530 Retention period for records. Each...

2012-01-01

406

5 CFR 536.301 - Mandatory pay retention.  

Code of Federal Regulations, 2013 CFR

...section, an agency must provide pay retention to an employee who moves between positions...management action that places an employee under a different pay schedule; (5) A management...action that may entitle the employee to pay retention under...

2013-01-01

407

47 CFR 42.6 - Retention of telephone toll records.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Retention of telephone toll records. 42.6 Section 42...Instructions § 42.6 Retention of telephone toll records. Each carrier that offers or bills toll telephone service shall retain for a...

2011-10-01

408

A Technique for Producing Soil Water Retention Curves  

Microsoft Academic Search

Water retention curves compiled for specific soil types are an essential management and research tool in evaluating plant stress. The method of producing water retention curves by means of the 1500 kPa pressure extractor is described.

L. van der Merwe

1990-01-01

409

49 CFR 219.903 - Retention of drug testing records.  

Code of Federal Regulations, 2011 CFR

... 2011-10-01 false Retention of drug testing records. 219.903 Section...TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE Recordkeeping Requirements § 219.903 Retention of drug testing records. (a) General...

2011-10-01

410

49 CFR 219.903 - Retention of drug testing records.  

Code of Federal Regulations, 2012 CFR

... 2012-10-01 false Retention of drug testing records. 219.903 Section...TRANSPORTATION CONTROL OF ALCOHOL AND DRUG USE Recordkeeping Requirements § 219.903 Retention of drug testing records. (a) General...

2012-10-01

411

15 CFR 762.6 - Period of retention.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Period of retention. 762.6 Section 762.6 Commerce and Foreign Trade Regulations Relating...EXPORT ADMINISTRATION REGULATIONS RECORDKEEPING § 762.6 Period of retention. (a) Five year...

2013-01-01

412

Multiple coding strategies in the retention of musical tones by possessors of absolute pitch.  

PubMed

Eighteen musicians with absolute pitch (AP) confirmed by screening tests participated in tonal and verbal short-term-retention tasks. In the tonal task, subjects identified three successive piano tones by their letter names. Recall of these note names after 18 sec of counting backwards was near perfect. Recall after an 18-sec delay filled with random piano tones was also near perfect. In contrast, the same subjects demonstrated significant forgetting when required to retain letter trigrams while counting backwards for 18 sec. These results were essentially replicated in a second experiment using longer (27 sec) retention intervals, a more demanding verbal interference task, and an active musical interference task (singing a descending scale). We interpret these results as indicating that retention of note names by possessors of AP is not limited to verbal encoding; rather, multiple codes (e.g., auditory, kinesthetic, and visual imagery) are probably used. PMID:2796743

Zatorre, R J; Beckett, C

1989-09-01

413

Toward unique identifiers  

Microsoft Academic Search

This paper discusses the creation and use of unique identifiers for intellectual property. General concepts applicable to unique identifiers are defined and discussed [identifier, digital object, dumb and intelligent identifiers, readability, affordance or computability, multiple identification, resolution, metadata, persistence, granularity, derivatives (e.g., versions, formats, manifestations, and copies), check digits, and intermediate objects]. Requirements for unique identifiers are reviewed. Capacity issues

NORMAN PASKIN

1999-01-01

414

Retention Time Alignment of LC/MS Data by a Divide-and-Conquer Algorithm  

NASA Astrophysics Data System (ADS)

Liquid chromatography-mass spectrometry (LC/MS) has become the method of choice for characterizing complex mixtures. These analyses often involve quantitative comparison of components in multiple samples. To achieve automated sample comparison, the components of interest must be detected and identified, and their retention times aligned and peak areas calculated. This article describes a simple pairwise iterative retention time alignment algorithm, based on the divide-and-conquer approach, for alignment of ion features detected in LC/MS experiments. In this iterative algorithm, ion features in the sample run are first aligned with features in the reference run by applying a single constant shift of retention time. The sample chromatogram is then divided into two shorter chromatograms, which are aligned to the reference chromatogram the same way. Each shorter chromatogram is further divided into even shorter chromatograms. This process continues until each chromatogram is sufficiently narrow so that ion features within it have a similar retention time shift. In six pairwise LC/MS alignment examples containing a total of 6507 confirmed true corresponding feature pairs with retention time shifts up to five peak widths, the algorithm successfully aligned these features with an error rate of 0.2%. The alignment algorithm is demonstrated to be fast, robust, fully automatic, and superior to other algorithms. After alignment and gap-filling of detected ion features, their abundances can be tabulated for direct comparison between samples.

Zhang, Zhongqi

2012-04-01

415

Predictors of Retention in Dual-Focus Self-Help Groups  

PubMed Central

Attendance at 12-step groups has been found useful in maintaining abstinence from substance use; many members disengage early, missing out on potential benefits. New 12-step based groups have emerged to address the recovery needs of the many substance users with psychiatric comorbidity. Little is known about factors associated with retention in 12-step, especially in this population. This study sought to identify predictors of retention over a one-year period among members of a dual-focus 12-Step fellowship (N = 276). Using multivariate analysis, the following baseline characteristics were associated with greater retention one year later: older age, more lifetime arrests, abstinence in the pre-baseline year, more psychiatric symptoms in the pre-baseline year, not taking psychiatric medication, being more troubled by substance abuse than by mental health, and greater level of self-efficacy for recovery; residing in supported housing and being enrolled in outpatient treatment at follow-up were also significantly associated with better retention. Clinical implications to enhance retention in specialized 12-step groups are discussed.

Laudet, Alexandre B.; Magura, Stephen; Cleland, Charles M.; Vogel, Howard S.; Knight, Edward L.

2007-01-01

416

Short-term effects of grade retention on the growth rate of Woodcock-Johnson III broad math and reading scores.  

PubMed

We investigated the effects of grade retention in first grade on the growth of the Woodcock-Johnson broad mathematics and reading scores over three years using linear growth curve modeling on an academically at-risk sample. A large sample (n=784) of first grade children who were at risk for retention was initially identified based on low literacy scores. Scores representing propensity for retention were constructed based on 72 variables collected in comprehensive baseline testing in first grade. We closely matched 97 pairs of retained and promoted children based on their propensity scores using optimal matching procedures. This procedure adjusted for baseline differences between the retained and promoted children. We found that grade retention decreased the growth rate of mathematical skills but had no significant effect on reading skills. In addition, several potential moderators of the effect of retention on growth of mathematical and reading skills were identified including limited English language proficiency and children's conduct problems. PMID:19083352

Wu, Wei; West, Stephen G; Hughes, Jan N

2007-03-23

417

Orbit Evolution in Common Envelopes  

NASA Astrophysics Data System (ADS)

We study how the inclination angle and eccentricity evolve during a common envelope phase. During a common envelope phase, a compact star is swallowed by its giant companion and spirals into a tighter orbit. A close binary results if the compact star releases enough energy to expel the envelope. We investigate possible fossil evidence of the common envelope phase on the inclination angle and the eccentricity. A convective common envelope leads to force component perpendicular to the orbital plane, and thus change the orbital inclination. This makes it harder to uniquely identify the signature of neutron star natal kicks. A common envelope is usually assumed to circularize orbits, but some eccentricity in fact arises both from the spiral-in process itself, and from random forces in the orbital plane. When the envelope is expelled, it might seem that the binary system would preserve whatever eccentricity had been established at the final stage of the inspiral. But tidal dissipation by the residual envelope can reduce the eccentricity. The final eccentricity depends on which of these effects wins or how they balance each other. We discuss applications and observational tests of these predictions.

Luan, Jing; Phinney, E. S.

2011-09-01

418

Retention, Learning by Doing, and Performance in Emergency Medical Services  

PubMed Central

Objectives To examine the strength of the volume–outcome relationship among paramedics, a group of providers that has not been previously studied in this context. By identifying the effects of individual learning on performance, we also assess the value of paramedics' retention. The prehospital emergency medical services (EMS) setting allows us to interpret any volume–outcome relationship as learning by doing, uncontaminated by reputation-based referrals because ambulance units are dispatched based on proximity. Data Sources Incident-level EMS data spanning 1991 to 2005 from the Mississippi Emergency Medical Services Information System collected by the Mississippi Department of Health. Research Design Using linear and quantile methods with and without provider fixed effects, we estimate the relationship between experience accumulation and performance using the universe of trauma incidents involving injured patients (including motor vehicle crashes, falls, stabbings, and shootings). Principal Findings We find that greater individual volume is robustly related to improved performance. In addition, we find that the benefit of learning operates through both recent and past experiences, accrues differentially across tenure groups, and operates on both mean performance and the upper quantiles of the performance distribution. Conclusions Persistent past and current volume effects suggest that policy and managerial implications in EMS should be directed at retention efforts to take advantage of individual learning by paramedics.

David, Guy; Brachet, Tanguy

2009-01-01

419

Why Study Geoscience? Identifying Effective Recruitment and Retention Strategies for an Undergraduate Earth & Environmental Sciences Program  

NASA Astrophysics Data System (ADS)

McMaster University is a `research intensive' university with 17,000+ full time undergraduate students. The School of Geography and Earth Sciences (SGES) is located within the Faculty of Science, offers B.Sc., B.A., M.Sc., M.A. and PhD degree programs and teaches more than 70 undergraduate courses on an annual basis. The Honours B.Sc program in Earth and Environmental Sciences (EES) graduates approximately 25 students per year. Students enroll in undergraduate SGES programs in their second year, after completion of an introductory first year in the Faculty of Science in which they take compulsory science courses including math, physics, chemistry, and biology. First year students, as well as those in upper years, may also elect to take one or more of three introductory courses offered by SGES (Earth & the Environment, The Living Environment, Atmosphere & Hydrosphere) to complete their science requirements. Most students entering the Faculty of Science know little about geoscience as it does not form an important part of the Ontario secondary school curriculum. Hence, recruitment into the EES program is primarily via the first year courses. In order to establish reasons why students elected to take the introductory courses offered by SGES, and their reasons for considering subsequent entry to the B.Sc program, a survey of students taking one of the courses was conducted in the fall of 2003. Results from the survey indicate that students enroll in the course, and subsequently the EES program, for a variety of reasons including: general interest in how the planet works, concern for the environment, interesting title of the course and reputation of the instructor. Student concern over lack of potential jobs is cited as the main reason for not pursuing a degree in geoscience. This survey has helped to direct the multifaceted recruitment strategies used by SGES to continue to develop its undergraduate program through delivery of high quality first year courses. Additional recruitment strategies used to recruit and retain high quality students include an active undergraduate society and departmental events that contribute towards a culture of learning and sense of belonging that is sought by students.

Vajoczki, S.; Eyles, C. H.; Stewart, J.; Dasilva, L.

2005-12-01

420

Why Study Geoscience? Identifying Effective Recruitment and Retention Strategies for an Undergraduate Earth & Environmental Sciences Program  

Microsoft Academic Search

McMaster University is a `research intensive' university with 17,000+ full time undergraduate students. The School of Geography and Earth Sciences (SGES) is located within the Faculty of Science, offers B.Sc., B.A., M.Sc., M.A. and PhD degree programs and teaches more than 70 undergraduate courses on an annual basis. The Honours B.Sc program in Earth and Environmental Sciences (EES) graduates approximately

S. Vajoczki; C. H. Eyles; J. Stewart; L. Dasilva

2005-01-01

421

Effective Institutional Practices for Improving Minority Retention in Higher Education.  

ERIC Educational Resources Information Center

Provides case studies of minority retention programs at four institutions that represented different institutional types, different geographical locations, varying programs and services, and good rates of minority retention. In each case study the program and institutional context are described, and the characteristics of effective retention

Clewell, Beatriz Chu; Ficklen, Myra S.

1987-01-01

422

Framing Retention for Institutional Improvement: A 4 Ps Framework  

ERIC Educational Resources Information Center

|A 4 Ps framework for student retention strategy is a construct for reframing the retention discussion in a way that enables institutional improvement by challenging some conventional wisdom and prevailing perspectives that have characterized retention strategy for years. It opens new possibilities for action and improvement by suggesting that…

Kalsbeek, David H.

2013-01-01

423

5 CFR 536.302 - Optional pay retention.  

Code of Federal Regulations, 2013 CFR

...an authorized agency official may provide pay retention to an employee not entitled to pay retention under § 536.301, but whose payable...conjunction with an action that may entitle the employee to pay retention under paragraph (a) of this...

2013-01-01

424

Finishing and retention procedures in the Alexander discipline  

Microsoft Academic Search

Carefully transitioning from orthodontic treatment into the retention phase of orthodontics requires planning and preparation throughout treatment. Precision finishing is critical for excellent results. By achieving established goals and following specific steps in retention, the patient can have excellent long-term stability. This article highlights some of the factors considered important in planning and performing retention according to the Alexander Discipline.

Tucker Haltom

2001-01-01

425

The Tutor/Facilitator Role in Student Retention  

ERIC Educational Resources Information Center

Open and distance learning provide particular (and sometimes overlapping) contexts for discussions of student retention. This paper argues that the environment for learning created by distance learning tutors is a key factor in student retention, whether retention is taken to refer to student completion of a single course or student persistence…

Tait, Jo

2004-01-01

426

Measuring Student Retention at an Online Institution of Higher Education  

ERIC Educational Resources Information Center

|Student persistence or retention has been a documented issue in higher education in the United States since the late 1800s. While much has been written about the topic of retention at the more traditional types of institutions, little has been written about retention at the online institutions of higher learning that have developed since the…

Boston, Wallace E., Jr.

2010-01-01

427

Success in Cyberspace: Student Retention in Online Courses  

ERIC Educational Resources Information Center

|Student retention is an important issue in distance education. In the literature of higher education literature, however, information on student retention in online courses is incomplete. Few empirical studies have been conducted. Many articles reference the issue and then provide descriptions of best practices to address retention. Seldom,…

Moore, Kathleen; Bartkovich, Jeffrey; Fetzner, Marie; Ison, Sherrill

2003-01-01

428

Clinical methods for adjusting retention force of cast clasps  

Microsoft Academic Search

Careless adjusting methods to increase or decrease retention by grinding, polishing, or bending the clasp arm can lead to instability of the removable partial denture, damage to the surrounding tissues, and fracture of the clasp arm. This article describes systematic evaluation criteria and adjusting methods of retention force of a cast clasp. Excessive retention can be reduced by using a

Yuuji Sato

1999-01-01

429

Interference in short-term retention of discrete movements  

Microsoft Academic Search

Examined the retention of discrete lever movements with additional movements of the same lever interpolated in a 12-sec retention interval. In Exp. I with 28 males the position within the retention interval of 1 or 2 interpolated movements was varied. The absolute error of recall was significantly greater as the amount of interpolated material increased, and as its position moved

A. S. Faust-Adams

1972-01-01

430

Policies and Practice: A Focus on Higher Education Retention.  

ERIC Educational Resources Information Center

|This book, based on a discussion at an interactive videoconference, examines student diversity issues and retention strategies in the context of the Sallie Mae National Retention Project that addressed state expectations for more accountability and federal reporting requirements on graduation and retention. The eight chapters focus on equity as…

American Association of State Colleges and Universities, Washington, DC.

431

Observed peptide pI and retention time shifts as a result of post-translational modifications in multidimensional separations using narrow-range IPG-IEF.  

PubMed

Modified peptides constitute a sub-population among the tryptic peptides analyzed in LC-MS based shotgun proteomics experiments. For larger proteomes including the human proteome, the tryptic peptide pool is very large, which necessitates some form of sample fractionation. By carefully choosing the sample fractionation and separation methods applied as shown here for the combination of narrow-range immobilized pH gradient isoelectric focusing (IPG-IEF) and nanoUPLC-MS, significantly increased information content can be achieved. Relatively low standard deviations were obtained for such multidimensional separations in terms of peptide pI (<0.05 pI units) and retention time (<0.3 min for a 350 min gradient) for a selection of highly complex proteomics samples. Using narrow-range IPG-IEF, experimental and predicted pI were in relative good agreement. However, based on our data, retention time prediction algorithms need further improvements in accuracy to match state-of-the-art reversed-phase chromatography performance. General trends of peptide pI shifts induced by common modifications including deamidations and N-terminal modifications are described. Deamidations of glutamine and asparagines shift peptide pI by approximately 1.5 pI units, making the peptides more acidic. Additionally, a novel pI shift (+~0.4 pI units) was found associated with dethiomethyl Met modifications. Further, the effects of these modifications as well as methionine oxidation were investigated in terms of experimentally observed retention time shifts in the chromatographic separation step. Clearly, post-translational modification-induced influences on peptide pI and retention time can be accurately and reproducibly measured using narrow-range IPG-IEF and high-performance nanoLC-MS. Even at modest mass accuracy (±50 ppm), the inclusion of peptide pI (±0.2 pI units) and/or retention time (±20 min) criteria are highly informative for human proteome analyses. The applications of using this information to identify post-translationally modified peptides and improve data analysis workflows are discussed. PMID:20725754

Lengqvist, Johan; Eriksson, Hanna; Gry, Marcus; Uhlén, Kristina; Björklund, Christina; Bjellqvist, Bengt; Jakobsson, Per-Johan; Lehtiö, Janne

2010-08-20

432

Ability of Slovakian Pupils to Identify Birds  

ERIC Educational Resources Information Center

A pupil's ability to identify common organisms is necessary for acquiring further knowledge of biology. We investigated how pupils were able to identify 25 bird species following their song, growth habits, or both features presented simultaneously. Just about 19% of birds were successfully identified by song, about 39% by growth habit, and 45% of…

Prokop, Pavol; Rodak, Rastislav

2009-01-01

433

Convention et Common knowledge  

Microsoft Academic Search

[eng] Convention and common knowledge. . « Rationality cannot feed on itself only » (Aumann). Unless it feeds also on collective entities, such as conventions, that are not amenable to individual rationality, it fails to determine social reality. The concept of Common knowledge is examined in this Hght, as well as its ambition to render the collectivity totally transparent to

Jean-Pierre Dupuy

1989-01-01

434

Justified common knowledge  

Microsoft Academic Search

In this paper we introduce the justified knowledge operator J with the intended meaning of J? as ‘there is a justification for ?.’ Though justified knowledge appears here in a case study of common knowledge systems, a similar approach is applicable in more general situations. First we consider evidence-based common knowledge systems obtained by augmenting a multi-agent logic of knowledge

Sergei N. Artëmov

2006-01-01

435

Conceptualizing an information commons  

Microsoft Academic Search

Concepts from Strategic Alignment, a technology management theory, are used to discuss the Information Commons as a new service delivery model in academic libraries. The Information Commons, as a conceptual, physical, and instructional space, involves an organizational realignment from print to the digital environment.

Donald Beagle

1999-01-01

436

Conceptualizing an Information Commons.  

ERIC Educational Resources Information Center

Concepts from Strategic Alignment, a technology-management theory, are used to discuss the Information Commons as a new service-delivery model in academic libraries. The Information Commons, as a conceptual, physical, and instructional space, involves an organizational realignment from print to the digital environment. (Author)

Beagle, Donald

1999-01-01

437

Space Station Commonality Analysis.  

National Technical Information Service (NTIS)

This study was conducted on the basis of a modification to Contract NAS8-36413, Space Station Commonality Analysis, which was initiated in December, 1987 and completed in July, 1988. The objective was to investigate the commonality aspects of subsystems a...

1988-01-01

438

[Advances in recently identified coronaviruses].  

PubMed

Coronaviruses are a large family of viruses which include viruses that cause the common cold and severe acute respiratory syndrome (SARS) in humans and other diseases in animals. There are considerable genetic diversities within coronaviruses due to their wide rang hosts and their special gene replication and transcription mechanisms. During this process, gene recombinations often occur, resulting in novel subtype or coronavirus emerge constantly. Of note are SARS-like-CoVs and novel HCoV-EMC identified in 2012. This minireview summarized major advances of recently identified coronaviruses, focusing on the genome structures and interspecies jumping mechanism of coronavirus. PMID:23547382

Geng, He-Yuan; Tan, Wen-Jie

2013-01-01

439

The Library as Learning Commons: Rethink, Reuse, Recycle  

Microsoft Academic Search

At Oregon State University (OSU) Libraries, librarians are evaluating the decade-old information commons in the transition to a learning commons. Visits to commons spaces at libraries across the country provided perspective on this transition. This paper describes the development of the OSU Libraries Information Commons, identifies themes from our trips to other commons, and discusses the idea that we need

Uta Hussong-Christian; Hannah Gascho Rempel; Anne-Marie Deitering

2010-01-01

440

Retention of Information as a Function of Lesson Design for Middle School Studies of Wetlands in New Jersey  

Microsoft Academic Search

Considering the breadth of innovative teaching strategies available, it is helpful to identify which will be best suited for a particular subject. With students that have a variety of interests, it is important to engage as many as possible in the lab activity, especially those who might not identify science as their preferred interest. Here we test the retention of

A. Parsekian; C. Cimiluca; A. E. Gates; I. Calderon

2010-01-01

441

Errors in water retention curves determined with pressure plates: Effects on the soil water balance  

NASA Astrophysics Data System (ADS)

Pressure plates apparatus are very common experimental devices utilized to measure the soil water retention curve. Many studies have demonstrated the lack of reliability of pressure plates apparatus when they are used to measure the soil water retention curve in the dry range, due to low plate and soil conductance, lack of hydrostatic equilibrium, lack of soil-plate contact and soil dispersion. In this research, we investigated measurements of soil water retention curves obtained with a combination of Stackman's tables, pressure plates apparatus and the chilled-mirror dew point technique. Specifically, the aim of this research was: (a) to investigate the differences in the measured soil water retention curves by the different experimental methods, (b) evaluate relationships between the experimental differences and soil texture, (c) analyze the effect of experimental differences on hydraulic properties parameterization and (d) investigate the effects of the different parameters set on water transport computation. The results showed differences in measurements made by the combination of Stackman's tables and Richards' pressure plates apparatus as compared to the dew point method, for fine textured soils, while no significant differences were detected for coarse textured soils. Computed cumulative drainage and evaporation displayed lower values if soil water retention curves were obtained from data obtained with the Stackman's tables and Richards' pressure plates apparatus instead of the dew point method. In soils, where the soil water retention curve was measured with traditional methods (Stackman's tables and Richards' pressure plates apparatus) average cumulative drainage was 173 mm, with respect to a combination of methods including the dew point methods, where the average cumulative drainage was 184 mm. Average cumulative evaporation was 77 mm for the traditional methods, while it was 91 mm, for the combination of methods. Overall, when simulation models are used for studies related to solute transport, polluted soil remediation, irrigation management and others, erroneous measurement of the SWRC for fine textured soils, may lead to erroneous computation of the soil water balance.

Solone, R.; Bittelli, M.; Tomei, F.; Morari, F.

2012-11-01

442

Causes and recommendations for unanticipated ink retention following tattoo removal treatment.  

PubMed

While placement of ink into the skin is a long-standing tradition, patients are now seeking tattoo removal on a more frequent basis. Once considered acceptable removal options, tattoo ink removal via physical destruction included dermabrasion, chemical destruction, salabrasion, thermal destruction, and cryotherapy. Now these options are used extremely infrequently. These modalities provided unpredictable results and often required prolonged healing times and left patients with skin discoloration, pain, scarring, and ink retention. Even the widely adopted use of lasers, now considered the gold standard method, offers some level of unpredictability surrounding the natural progression of ink resolution. Multiple factors need to be taken into consideration when successfully removing tattoo pigment including the modalities used, number and frequency of treatments, proper device technique, and physiological barriers to tattoo removal. This paper serves to elucidate the common causes of ink retention following tattoo removal treatment with recommendations on how best to address this relatively common occurrence. PMID:23882312

Kirby, William; Chen, Cynthia L; Desai, Alpesh; Desai, Tejas

2013-07-01

443

Improving student retention in computer engineering technology  

NASA Astrophysics Data System (ADS)

The purpose of this research project was to improve student retention in the Computer Engineering Technology program at the Northern Alberta Institute of Technology by reducing the number of dropouts and increasing the graduation rate. This action research project utilized a mixed methods approach of a survey and face-to-face interviews. The participants were male and female, with a large majority ranging from 18 to 21 years of age. The research found that participants recognized their skills and capability, but their capacity to remain in the program was dependent on understanding and meeting the demanding pace and rigour of the program. The participants recognized that curriculum delivery along with instructor-student interaction had an impact on student retention. To be successful in the program, students required support in four domains: academic, learning management, career, and social.

Pierozinski, Russell Ivan

444

Science Teacher Retention: Mentoring and Renewal  

NSDL National Science Digital Library

âSome forty percent of all new science teachers leave the profession within five years, and too many science teachers are wedded to their textbooks and the routines they acquired during their collegiate years." What can be done to retain new science teachers and reinvigorate more experienced science teachers? Allow Science Teacher Retention: Mentoring and Renewal to âmentorâ you as you reach toward this lofty but attainable goal. For this book, Jack Rhoton and Patricia Bowers assembled some of the countryâs most noted science educators and asked them to offer ideas to resolve the problems of science teacher retention and renewal. Their suggestions are designed to keep the brightest and most motivated new teachers in the profession and help all science teachers to continue to learn and to treat their own profession like science itselfâthat is, by basing it on questions, suggesting answers, and using their interests and abilities to test the validity of these answers.

2008-07-28

445

Tritium Retention and Removal in Tokamaks  

SciTech Connect

Management of tritium inventory remains one of the grand challenges in the development of fusion energy. Tritium is an important source term in safety assessments, it is expensive and in short supply. Tritium can be continuously retained in a tokamak by codeposition with eroded carbon or beryllium and JET and TFTR with carbon plasma facing components showed a tritium retention level that would be unacceptable in ITER or future fusion reactors. Asdex-U and Alcator C-mod have shown reduced hydrogenic retention with tungsten clad and molybdenum plasma facing components. Once the tritium inventory approaches the administrative limit, tritium must be removed to permit continued D-T plasma operations. Several candidate techniques are being considered and need to be proven at a relevant speed and efficiency in contemporary tokamaks. Projections for ITER are discussed.

Skinner, Charles H. [Princeton Plasma Physics Laboratory, POB 451, Princeton, NJ 08543 (United States)

2009-02-19

446

Common Carrier Microwave Pending Applications Dump.  

National Technical Information Service (NTIS)

Contains fiche copies of pending application records that were not used in the production of the common carriers construction permit authorizations. These records are printed, (unformatted and without titles of labels to identify contents) utilizing the H...

1983-01-01

447

The influence of retrieval on retention  

Microsoft Academic Search

Four experiments tested the hypothesis that successful retrieval of an item from memory affects retention only because the\\u000a retrieval provides an additional presentation of the target item. Two methods of learning paired associates were compared,\\u000a In the pure study trial (pure ST condition) method, both items of a pair were presented simultaneously for study. In the test\\u000a trial\\/study trial (TTST

Mark Carrier; Harold Pashler

1992-01-01

448

207-A retention basins system design description  

Microsoft Academic Search

The 242-A Evaporator is a waste treatment facility designed to reduce liquid waste volumes currently stored in the Hanford Area double shell Waste Storage Tanks. The evaporator uses evaporative concentration to achieve this volume reduction, returning the concentrated slurry to the double-shell tanks for storage. The process effluent is transferred to various retention\\/treatment facilities for eventual release to the environment.

Wahlquist

1994-01-01

449

Impact of Interactive Learning on Knowledge Retention  

Microsoft Academic Search

There is amble evidence that supports true interactivity, both in the interface and in the presentation methodology, will\\u000a further enhance learning and knowledge retention among students. The real challenge is how to implement it, measure and evaluate\\u000a this outcome. This paper presents findings that look into the efficacy of the combination of virtual environments and interactive\\u000a teaching techniques in enhancing

Mohamed Ibrahim; Osama Al-shara

2007-01-01

450

Inquiry-Based Learning and Student Retention  

Microsoft Academic Search

The purpose of the study was to evaluate the benefits of inquiry based hands-on education, engage students in their own learning, and increase retention of knowledge. Research supports the connection between this process and the learning in a science curriculum. Four topics to be discussed in the following chapter are hands-on learning and inquiry-based instruction, hands-on learning beyond the classroom,

Shelly Marie Lamanna

2010-01-01

451

300 Area Building Retention Evaluation Mitigation Plan  

SciTech Connect

Evaluate the long-term retention of several facilities associated with the PNNL Capability Replacement Laboratory and other Hanfor mission needs. WCH prepared a mitigation plan for three scenarios with different release dates for specific buildings. The evaluations present a proposed plan for providing utility services to retained facilities in support of a long-term (+20 year) lifespan in addition to temporary services to buildings with specified delayed release dates.

D. J. McBride

2007-07-03

452

Short and long term retention in antiretroviral care in health facilities in rural Malawi and Zimbabwe  

PubMed Central

Background Despite the successful scale-up of ART services over the past years, long term retention in ART care remains a major challenge, especially in high HIV prevalence and resource-limited settings. This study analysed the short (<12 months) and long (>12 months) term retention on ART in two ART programmes in Malawi (Thyolo district) and Zimbabwe (Buhera district). Methods Retention rates at six-month intervals are reported separately among (1) patients since ART initiation and (2) patients who had been on ART for at least 12 months, according to the site of ART initiation and follow-up, using the Kaplan Meier method. ‘Retention’ was defined as being alive on ART or transferred out, while ‘attrition’ was defined as dead, lost to follow-up or stopped ART. Results In Thyolo and Buhera, a total of 12,004 and 9,721 patients respectively were included in the analysis. The overall retention among the patients since ART initiation was 84%, 80% and 77% in Thyolo and 88%, 84% and 82% in Buhera at 6, 12 and 18 months, respectively. In both programmes the largest drop in ART retention was found during the initial 12 months on ART, mainly related to a high mortality rate in the health centres in Thyolo and a high loss to follow-up rate in the hospital in Buhera. Among the patients who had been on ART for at least 12 months, the retention rates leveled out, with 97%, 95% and 94% in both Thyolo and Buhera, at 18, 24 and 30 months respectively. Loss to follow-up was identified as the main contributor to attrition after 12 months on treatment in both programmes. Conclusions To better understand the reasons of attrition and adapt the ART delivery care models accordingly, it is advisable to analyse short and long term retention separately, in order to adapt intervention strategies accordingly. During the initial months on ART more medical follow-up, especially for symptomatic patients, is required to reduce mortality. Once stable on ART, however, the ART care delivery should focus on regular drug refill and adherence support to reduce loss to follow up. Hence, innovative life-long retention strategies, including use of new communication technologies, community based interventions and drug refill outside the health facilities are required.

2012-01-01

453

Surface free energy effect on bacterial retention.  

PubMed

Bacterial infection is one of the most frequent and severe complications in the long-term effectiveness of medical implants and devices, greatly increasing treatment cost and inconvenience to the patient. Surface physical and chemical properties are known to influence the extent and form of bacterial infection, although the exact correlation with specific properties is difficult due to the complexity of the system. One approach in the attempt to reduce the bacterial colonisation is to modify the surface energy and chemistry, so as to influence the interactions between the surface and the bacteria that come into contact with it. Five types of coatings were investigated in this study, together with silicone, and polished and non-polished stainless steel 316L. Surfaces were tested for retention of Pseudomonas aeruginosa AK1 after 1h. A good correlation (>90%) was found between P. aeruginosa AK1 retention and total surface free energy, as well as its polar and dispersive components. The minimum level of P. aeruginosa AK1 retention was found for a range of total surface free energy in the range 20-27 mN/m. PMID:16545555

Pereni, C I; Zhao, Q; Liu, Y; Abel, E

2006-03-06

454

Improved motor sequence retention by motionless listening.  

PubMed

This study examined the effect of listening to a newly learned musical piece on subsequent motor retention of the piece. Thirty-six non-musicians were trained to play an unfamiliar melody on a piano keyboard. Next, they were randomly assigned to participate in three follow-up listening sessions over 1 week. Subjects who, during their listening sessions, listened to the same initial piece showed significant improvements in motor memory and retention of the piece despite the absence of physical practice. These improvements included increased pitch accuracy, time accuracy, and dynamic intensity of key pressing. Similar improvements, though to a lesser degree, were observed in subjects who, during their listening sessions, were distracted by another task. Control subjects, who after learning the piece had listened to nonmusical sounds, showed impaired motoric retention of the piece at 1 week from the initial acquisition day. These results imply that motor sequences can be established in motor memory without direct access to motor-related information. In addition, the study revealed that the listening-induced improvements did not generalize to the learning of a new musical piece composed of the same notes as the initial piece learned, limiting the effects to musical motor sequences that are already part of the individual's motor repertoire. PMID:22434336

Lahav, Amir; Katz, Tal; Chess, Roxanne; Saltzman, Elliot

2012-03-21

455

Deuterium Retention in NSTX with Lithium Conditioning  

SciTech Connect

High (approximate to 90%) deuterium retention was observed in NSTX gas balance measurements both with- and without lithiumization of the carbon plasma-facing components. The gas retained in ohmic discharges was measured by comparing the vessel pressure rise after a discharge to that of a gas-only pulse with the pumping valves closed. For neutral beam heated discharges the gas input and gas pumped by the NB cryopanels were tracked. The discharges were followed by outgassing of deuterium that reduced the retention. The relationship between retention and surface chemistry was explored with a new plasma-material interface probe connected to an in vacuo surface science station that exposed four material samples to the plasma. XPS and TDS analysis demonstrated that binding of D atoms in graphite is fundamentally changed by lithium - in particular atoms are weakly bonded in regions near lithium atoms bound to either oxygen or the carbon matrix. This is in contrast to the strong ionic bonding that occurs between D and pure Li. (C) 2010 Elsevier B.V. All rights reserved.

Skinner, C. H. [Princeton Plasma Physics Laboratory (PPPL); Allain, J. P. [Purdue University; Blanchard, W. [Princeton Plasma Physics Laboratory (PPPL); Kugel, H. W. [Princeton Plasma Physics Laboratory (PPPL); Maingi, Rajesh [ORNL; Roquemore, L. [Princeton Plasma Physics Laboratory (PPPL); Soukhanovskii, V. A. [Lawrence Livermore National Laboratory (LLNL); Taylor, C. N. [Purdue University

2011-01-01

456

Trace Element Retention and Release on Minerals and Soil in a Constructed Wetland  

Microsoft Academic Search

environments. The most common inorganic forms are arsenite (H3AsO3) and arsenate (H2AsO 4 or HAsO 2 4 ). Constructed wetlands are one method under investigation for the Various organic forms of As also occur, primarily meth- remediation of trace element-contaminated agricultural drainwater. A greater understanding of the retention of trace elements by the ylated species formed through microbial processes. Ar-

Patricia M. Fox; Harvey E. Doner

2002-01-01

457

Preceptors promote competence and retention: strategies to achieve success.  

PubMed

When considering factors that affect nurse recruitment and retention, an appropriate response to the nursing shortage may be to either implement a preceptor model or refine an existing preceptor program. This article describes the evolution of a comprehensive preceptor model including the following: strategies to gain staff, administrative, and educational support and involvement; a preceptorship policy and procedure; a formal program to prepare preceptors; the need for identified orientation, learning expectations, and documentation of the same; evaluation methods of a preceptor model; and rewards for the preceptor. The viability and strength of this preceptor program may be attributed to the inclusion of all levels of nursing staff in its development and implementation. PMID:2513344

Hitchings, K S

458

Visual implant elastomer mark retention through metamorphosis in amphibian larvae  

USGS Publications Warehouse

Questions in population ecology require the study of marked animals, and marks are assumed to be permanent and not overlooked by observers. I evaluated retention through metamorphosis of visual implant elastomer marks in larval salamanders and frogs and assessed error in observer identification of these marks. I found 1) individual marks were not retained in larval wood frogs (Rana sylvatica), whereas only small marks were likely to be retained in larval salamanders (Eurycea bislineata), and 2) observers did not always correctly identify marked animals. Evaluating the assumptions of marking protocols is important in the design phase of a study so that correct inference can be made about the population processes of interest. This guidance should be generally useful to the design of mark?recapture studies, with particular application to studies of larval amphibians.

Grant, E.H.C.

2008-01-01

459

Visual implant elastomer mark retention through metamorphosis in amphibian larvae  

USGS Publications Warehouse

Questions in population ecology require the study of marked animals, and marks are assumed to be permanent and not overlooked by observers. I evaluated retention through metamorphosis of visual implant elastomer marks in larval salamanders and frogs and assessed error in observer identification of these marks. I found 1) individual marks were not retained in larval wood frogs (Rana sylvatica), whereas only small marks were likely to be retained in larval salamanders (Eurycea bislineata), and 2) observers did not always correctly identify marked animals. Evaluating the assumptions of marking protocols is important in the design phase of a study so that correct inference can be made about the population processes of interest. This guidance should be generally useful to the design of mark-recapture studies, with particular application to studies of larval amphibians.

Grant, E. H. C.

2008-01-01

460

Capsule endoscopy device retention and magnetic resonance imaging  

PubMed Central

A 55-year-old man was hospitalized for a neurologic and infectious workup after having hallucinations and productive cough for 2 days. During hospitalization, he experienced dark stools with an acute drop in hemoglobin. Upper endoscopy and colonoscopy were negative for an identifiable source of bleed. Capsule endoscopy was later done and subsequently an anteroposterior abdominal radiograph confirmed the presence of a retained capsule near the junction of the descending and distal transverse colon, likely contained within a colonic diverticulum. In the interim, the patient developed acute right-sided lumbar radiculopathy prompting emergent lumbar spine magnetic resonance imaging (MRI). During the scanning process, the retained capsule was seen and the test was immediately terminated without harm to the patient. Device retention is a complication unique to capsule endoscopy, occurring at a rate of 1% to 1.7%; retained devices are considered a danger and contraindication to MRI.

Liang, Jackson J.; DeJesus, Ramona S.

2013-01-01

461

From vigilance to violence: mate retention tactics in married couples.  

PubMed

Although much research has explored the adaptive problems of mate selection and mate attraction, little research has investigated the adaptive problem of mate retention. We tested several evolutionary psychological hypotheses about the determinants of mate retention in 214 married people. We assessed the usage of 19 mate retention tactics ranging from vigilance to violence. Key hypothesized findings include the following: Men's, but not women's, mate retention positively covaried with partner's youth and physical attractiveness. Women's, but not men's, mate retention positively covaried with partner's income and status striving. Men's mate retention positively covaried with perceived probability of partner's infidelity. Men, more than women, reported using resource display, submission and debasement, and intrasexual threats to retain their mates. Women, more than men, reported using appearance enhancement and verbal signals of possession. Discussion includes an evolutionary psychological analysis of mate retention in married couples. PMID:9107005

Buss, D M; Shackelford, T K

1997-02-01

462

Common Foot Problems  

MedlinePLUS

... are an area of thickened skin caused by friction and pressure. Juvenile plantar dermatosis occurs in children ... occurs in response to excessive, repeated shear or friction forces, commonly due to constant rubbing of the ...

463

Metabolism - Common Metabolism Concepts  

NSDL National Science Digital Library

This article explains how solar energy is the energy source for almost all living systems on earth. Photosynthesis, catabolic reactions, and anabolic reactions are briefly discussed. Lastly, common questions are answered about converting food to energy.

464

Common Reactions After Trauma  

MedlinePLUS

... trauma? All kinds of trauma survivors commonly experience stress reactions. This is true for veterans, children, and disaster rescue or relief workers. If you understand what is happening when ...

465

Common Carrier Services.  

ERIC Educational Resources Information Center

This bulletin outlines the Federal Communications Commission's (FCC) responsibilities in regulating the interstate and foreign common carrier communication via electrical means. Also summarized are the history, technological development, and current capabilities and prospects of telegraph, wire telephone, radiotelephone, satellite communications,…

Federal Communications Commission, Washington, DC.

466

Common MANET Framework.  

National Technical Information Service (NTIS)

This effort researched, developed and demonstrated a Common Mobile Ad-hoc Networking (MANET) framework (CMF) to provide a uniform abstraction for wireless discovery, communication, and routing of network traffic over heterogeneous transmission technologie...

G. Frazier

2008-01-01

467

Common NICU Equipment  

MedlinePLUS

... period. Common NICU equipment The NICU contains many machines and other types of equipment used to care for sick babies with many different problems. These machines seem less intimidating when you understand how they ...

468

Common peroneal nerve dysfunction  

MedlinePLUS

... type of peripheral neuropathy (damage to nerves outside the brain or spinal cord). This condition can affect people ... people: Who are very thin (for example, from anorexia nervosa ) ... damage the common peroneal nerve Charcot-Marie-Tooth disease is ...

469

Deriving Common Model Characteristics  

NSDL National Science Digital Library

In this activity, students confront several different models - from the DNA helix Watson and Crick constructed in their laboratory to a map of McDonalds density in the US - and work in small groups to derive their commonalities.

Momsen, Jennifer; Long, Tammy M.; Speth, Elena B.

470

[A new method for predicting retention time of solutes under linear gradient elution conditions in RP-HPLC].  

PubMed

A new method for predicting the retention time of solutes under linear gradient elution has been established. In this method, the migration distance of solutes in column and the mobile phase gradient were modified simultaneously according to the distribution of mobile phase in column. The prediction results of retention time of both weakly and strongly retentive solutes were accurate in different instrumental systems using this method. In order to test and verify this method, the retention time of fifteen amino acids and eight homologous compounds of benzene were predicted. The predicted results were compared with those predicted by the method in common use. The relative average errors between predicted and experimental values were 3.70% and 4.90% for the weakly retentive solutes, far smaller than those obtained by the reference method (23.61% and 31.16%). For the strongly retentive solutes, the relative average errors were 0.21% and 6.01% respectively, slightly smaller than those obtained by the reference method (0.81% and 6.69%). It is seen that this new method has many advantages. PMID:12541812

Shan, Y C; Zhao, R H; Zhang, W B; Zhang, Y K

2001-05-01

471

Facilitating job retention for chronically ill employees: perspectives of line managers and human resource managers  

PubMed Central

Background Chronic diseases are a leading contributor to work disability and job loss in Europe. Recent EU policies aim to improve job retention among chronically ill employees. Disability and occupational health researchers argue that this requires a coordinated and pro-active approach at the workplace by occupational health professionals, line managers (LMs) and human resource managers (HRM). Little is known about the perspectives of LMs an HRM on what is needed to facilitate job retention among chronically ill employees. The aim of this qualitative study was to explore and compare the perspectives of Dutch LMs and HRM on this issue. Methods Concept mapping methodology was used to elicit and map statements (ideas) from 10 LMs and 17 HRM about what is needed to ensure continued employment for chronically ill employees. Study participants were recruited through a higher education and an occupational health services organization. Results Participants generated 35 statements. Each group (LMs and HRM) sorted these statements into six thematic clusters. LMs and HRM identified four similar clusters: LMs and HRM must be knowledgeable about the impact of chronic disease on the employee; employees must accept responsibility for work retention; work adaptations must be implemented; and clear company policy. Thematic clusters identified only by LMs were: good manager/employee cooperation and knowledge transfer within the company. Unique clusters identified by HRM were: company culture and organizational support. Conclusions There were both similarities and differences between the views of LMs and HRM on what may facilitate job retention for chronically ill employees. LMs perceived manager/employee cooperation as the most important mechanism for enabling continued employment for these employees. HRM perceived organizational policy and culture as the most important mechanism. The findings provide information about topics that occupational health researchers and planners should address in developing job retention programs for chronically ill workers.

2011-01-01

472

Enantiomer identification in the flavour and fragrance fields by "interactive" combination of linear retention indices from enantioselective gas chromatography and mass spectrometry.  

PubMed

This study describes the development of a gas chromatography-mass spectrometry (GC-MS) library to identify optically active compounds in the flavour and fragrance field using enantioselective GC with cyclodextrin derivatives (CDs) as chiral selectors in combination with MS. The library operates on the "interactive" combination of linear retention indices (I(T) values) in parallel to MS spectra, so as to identify enantiomers reliably and to measure EE and/or ER unequivocally. Since MS is not a selective probe to discriminate optical isomers, mass spectra (or diagnostic ions in SIM mode) are used to locate the enantiomer(s) in the chromatogram, and I(T) values to identify it(them) safely and reliably in particular in complex mixtures. The library has been built up through the following steps: Some applications of the library are also reported. (a) Selection of CD derivatives able to cover a wide range of racemate separations. Four cyclodextrin derivatives were used: 2,6-di-O-methyl-3-O-pentyl-beta-CD, 2,3-di-O-methyl-6-O-tert-butyldimethylsilyl-beta-CD, 2,3-di-O-ethyl-6-AO-tert-butyldimethylsilyl-beta-CD, and 2,3-di-O-acetyl-6-O-tert-butyldimethylsilyl-beta-CD. (b) Determination of the analytes' I(T) values and evaluation of their stability and reliability at both intra- and inter-laboratory level. (c) Determination of the range within which the I(T) of an enantiomer has to be correctly identified, i.e. determination of a common retention index allowance (RIA). (d) Construction of the library, at the moment comprising the enantiomers of 134 racemates. A record has been attributed to each enantiomer including I(T) values determined on the four CD coated columns, mass spectrum, IUPAC chemical names, CAS numbers, molecular weight, and, when separated, racemate enantiomer resolution on the CD investigated. Some applications of the library are also reported. PMID:18508067

Liberto, Erica; Cagliero, Cecilia; Sgorbini, Barbara; Bicchi, Carlo; Sciarrone, Danilo; Zellner, Barbara D'Acampora; Mondello, Luigi; Rubiolo, Patrizia

2008-04-24

473

Regionalization of soil water retention curves in a highly variable soilscape, II. Comparison of regionalization procedures using a pedotransfer function  

Microsoft Academic Search

As measuring soil water retention curves (WRCs) is time-consuming and costly, pedotransfer functions (PTFs) which predict WRCs from the fundamental soil properties bulk density (Db), texture, and organic C (Corg) are in common use. The regionalization of WRCs with a PTF can be performed in two different ways. (1) Interpolate first the fundamental properties, and apply then the PTF to

W. Sinowski; A. C. Scheinost; K. Auerswald

1997-01-01

474

Experimental corrections of simplified methods for predicting water retention curves in clay-loamy soils from particle-size determination  

Microsoft Academic Search

The Arya and Paris model for predicting soil water retention curves from particle-size distribution data is a commonly accepted method for rigid soils with medium grain size but limitations to its application for fine textured soils occur, due to the dominant role of internal structure in such soils. Moving from the consideration that simplified models for determining soil hydraulic characteristics

Angelo Basile; Guido D'Urso

1997-01-01

475

Retention of total carotenoid and ?-carotene in yellow sweet cassava (Manihot esculenta Crantz) after domestic cooking  

PubMed Central

Background Over the last decade, considerable efforts have been made to identify cassava cultivars to improve the vitamin A nutritional status of undernourished populations, especially in northeast Brazil, where cassava is one of the principal and essentially only nutritional source. Objectives The aim of this study was to evaluate the total carotenoid, ?-carotene, and its all-E-, 9-, and 13-Z-?-carotene isomers content in seven yellow sweet cassava roots and their retention after three boiling cooking methods. Design The total carotenoid, ?-carotene, and its all-E-, 9-, and 13-Z-?-carotene isomers in yellow sweet cassava samples were determined by ultraviolet/visible spectrometry and high-performance liquid chromatography, respectively, before and after applying the cooking methods. All analyses were performed in triplicate. Results The total carotenoid in raw roots varied from 2.64 to 14.15 µg/g and total ?-carotene from 1.99 to 10.32 µg/g. The ?-carotene predominated in all the roots. The Híbrido 2003 14 08 cultivar presented the highest ?-carotene content after cooking methods 1 and 3. The 1153 – Klainasik cultivar presented the highest 9-Z-?-carotene content after cooking by method 3. The highest total carotenoid retention was observed in cultivar 1456 – Vermelhinha and that of ?-carotene for the Híbrido 2003 14 11 cultivar, both after cooking method 1. Evaluating the real retention percentage (RR%) in sweet yellow cassava after home cooking methods showed differences that can be attributed to the total initial carotenoid contents. However, no cooking method uniformly provided a higher total carotenoid or ?-carotene retention in all the cultivars. Conclusion Differences were found in the cooking methods among the samples regarding total carotenoid or ?-carotene retention, suggesting that the different behaviors of the cultivars need to be further analyzed. However, high percentages of total carotenoid or ?-carotene retention were observed and can minimize vitamin A deficiency in low-income populations.

Carvalho, Lucia M. J.; Oliveira, Alcides R. G.; Godoy, Ronoel L. O.; Pacheco, Sidney; Nutti, Marilia R.; de Carvalho, Jose L. V.; Pereira, Elenilda J.; Fukuda, Wania G.

2012-01-01

476