7 results on '"Lisa Coffey"'
Search Results
2. Genotype-by-environment interactions affecting heterosis in maize.
- Author
-
Zhi Li, Lisa Coffey, Jacob Garfin, Nathan D Miller, Michael R White, Edgar P Spalding, Natalia de Leon, Shawn M Kaeppler, Patrick S Schnable, Nathan M Springer, and Candice N Hirsch
- Subjects
Medicine ,Science - Abstract
The environment can influence heterosis, the phenomena in which the offspring of two inbred parents exhibits phenotypic performance beyond the inbred parents for specific traits. In this study we measured 25 traits in a set of 47 maize hybrids and their inbred parents grown in 16 different environments with varying levels of average productivity. By quantifying 25 vegetative and reproductive traits across the life cycle we were able to analyze interactions between the environment and multiple distinct instances of heterosis. The magnitude and rank among hybrids for better-parent heterosis (BPH) varied for the different traits and environments. Across the traits, a higher within plot variance was observed for inbred lines compared to hybrids. However, for most traits, variance across environments was not significantly different for inbred lines compared to hybrids. Further, for many traits the correlations of BPH to hybrid performance and BPH to better parent performance were of comparable magnitude. These results indicate that inbred lines and hybrids show similar trends in environmental response and both are contributing to observed genotype-by-environment interactions for heterosis. This study highlights the degree of heterosis is not an inherent trait of a specific hybrid, but varies depending on the trait measured and the environment where that trait is measured. Studies that attempt to correlate molecular processes with heterosis are hindered by the fact that heterosis is not a consistent attribute of a specific hybrid.
- Published
- 2018
- Full Text
- View/download PDF
3. The Holistic Approach to Academia: Traditional Classroom Instruction and Experiential Learning of Student-Athletes
- Author
-
Lisa Coffey and Armani Davis
- Subjects
student-athlete employ-ability ,experiential learning ,transferable skills ,career development ,competitive advantage ,Education - Abstract
National Collegiate Athletic Association (NCAA) student-athletes represent a unique subculture on college campuses, and the athlete must balance the rigors of coursework, athletics, and the non-traditional dynamics associated with being an athlete, which include “dumb jock” stereotypes, isolation, negative criticism, and the fear associated with athletic retirement. Unlike non-athletes, these students face increasing pressure from outside sources, including family, coaches, and fans, to be the best. However, participation in athletics gives student-athletes an opportunity to learn valuable skills and characteristics that are transferrable to the workplace. This mixed-method research extracted descriptive data to identify the characteristics learned through athletics, the skill-sets potential employers value the most, and how those skills are transferable to the workplace. Those characteristics include refined leadership, communication skills, and an ability to multi-task with a laser-sharp focus. Student-athletes are assertive, driven, understand the concept of teamwork, and handle constructive criticism without adverse reactions. The results show that when student-athletes engage in the classroom and absorb the learning opportunities provided through athletics, student-athletes can have a competitive advantage in the job marketplace.
- Published
- 2019
- Full Text
- View/download PDF
4. Validation of a model for identification of patients with compensated cirrhosis at high risk of decompensation
- Author
-
Rebecca Harris, Audrey Dillon, Imad Waked, Philip J. Johnson, David J. Harman, Stephen Stewart, Alessandro Cucchetti, Sarah Berhane, Guruprasad P. Aithal, Omar Elshaarawy, Lisa Coffey, Indra Neil Guha, Martin W. James, Guha I.N., Harris R., Berhane S., Dillon A., Coffey L., James M.W., Cucchetti A., Harman D.J., Aithal G.P., Elshaarawy O., Waked I., Stewart S., and Johnson P.J.
- Subjects
Liver Cirrhosis ,Alcohol-Associated Liver Disease Outcome ,Male ,medicine.medical_specialty ,Cirrhosis ,Prognosi ,Liver Cirrhosi ,liver failure, prognostic factor, alcohol-associated liver disease outcome, NAFLD prediction ,Predictive Value of Test ,Risk Assessment ,Severity of Illness Index ,Follow-Up Studie ,03 medical and health sciences ,Liver disease ,0302 clinical medicine ,Model for End-Stage Liver Disease ,Predictive Value of Tests ,Risk Factors ,Internal medicine ,medicine ,Humans ,Decompensation ,Prospective Studies ,NAFLD Prediction ,Aged ,Framingham Risk Score ,Hepatology ,business.industry ,Prognostic Factor ,Risk Factor ,Hazard ratio ,Gastroenterology ,Middle Aged ,Prognosis ,medicine.disease ,Prospective Studie ,Liver ,030220 oncology & carcinogenesis ,Cohort ,Disease Progression ,Egypt ,Female ,030211 gastroenterology & hepatology ,Liver function ,business ,Ireland ,Liver Failure ,Follow-Up Studies ,Human - Abstract
Background & Aims It is important to rapidly identify patients with advanced liver disease. Routine tests to assess liver function and fibrosis provide data that can be used to determine patients’ prognoses. We tested the validated the ability of combined data from the ALBI and FIB-4 scoring systems to identify patients with compensated cirrhosis at highest risk for decompensation. Methods We collected data from 145 patients with compensated cirrhosis (91% Child A cirrhosis and median MELD scores below 8) from a cohort in Nottingham, United Kingdom, followed for a median 4.59 years (development cohort). We collected baseline clinical features and recorded decompensation events. We used these data to develop a model based on liver function (assessed by the ALBI score) and extent of fibrosis (assessed by the FIB-4 index) to determine risk of decompensation. We validated the model in 2 independent external cohorts (1 in Dublin, Ireland and 1 in Menoufia, Egypt) comprising 234 patients. Results In the development cohort, 19.3% of the patients developed decompensated cirrhosis. Using a combination of ALBI and FIB-4 scores, we developed a model that identified patients at low vs high risk of decompensation (hazard ratio [HR] for decompensation in patients with high risk score was 7.10). When we tested the scoring system in the validation cohorts, the HR for decompensation in patients with a high-risk score was 12.54 in the Ireland cohort and 5.10 in the Egypt cohort. Conclusion We developed scoring system, based on a combination of ALBI and FIB-4 scores, that identifies patients at risk for liver decompensation. We validated the scoring system in 2 independent international cohorts (Europe and the Middle East), so it appears to apply to diverse populations.
- Published
- 2019
5. Characterizing allele-by-environment interactions using maize introgression lines
- Author
-
Nathan M. Springer, Candice N. Hirsch, Patrick S. Schnable, Nathan D. Miller, Aaron J. Lorenz, Zhi Li, Edgar P. Spalding, Lisa Coffey, Dnyaneshwar C. Kadam, Sara B. Tirado, Shawn M. Kaeppler, and Natalia de Leon
- Subjects
Phenotypic plasticity ,Range (biology) ,fungi ,Introgression ,food and beverages ,Quantitative trait locus ,Biology ,equipment and supplies ,Phenotype ,Genome ,complex mixtures ,Evolutionary biology ,bacteria ,Allele - Abstract
Relatively small genomic introgressions containing quantitative trait loci can have significant impacts on the phenotype of an individual plant. However, the magnitude of phenotypic effects for the same introgression can vary quite substantially in different environments due to allele-by-environment interactions. To study potential patterns of allele-by-environment interactions, fifteen near-isogenic lines (NILs) with >90% B73 genetic background and multiple Mo17 introgressions were grown in 16 different environments. These environments included five geographical locations with multiple planting dates and multiple planting densities. The phenotypic impact of the introgressions was evaluated for up to 26 traits that span different growth stages in each environment to assess allele-by-environment interactions. Results from this study showed that small portions of the genome can drive significant genotype-by-environment interaction across a wide range of vegetative and reproductive traits, and the magnitude of the allele-by-environment interaction varies across traits. Some introgressed segments were more prone to genotype-by-environment interaction than others when evaluating the interaction on a whole plant basis throughout developmental time, indicating variation in phenotypic plasticity throughout the genome. Understanding the profile of allele-by-environment interaction is useful in considerations of how small introgressions of QTL or transgene containing regions might be expected to impact traits in diverse environments.Key MessageSignificant allele-by-environment interactions are observed for traits throughout development from small introgressed segments of the genome.
- Published
- 2019
- Full Text
- View/download PDF
6. The Holistic Approach to Academia: Traditional Classroom Instruction and Experiential Learning of Student-Athletes
- Author
-
Armani Davis and Lisa Coffey
- Subjects
Public Administration ,media_common.quotation_subject ,Physical Therapy, Sports Therapy and Rehabilitation ,Leadership ,Experiential learning ,Competitive advantage ,career development ,Education ,Constructive criticism ,student-athlete employ-ability ,0502 economics and business ,Developmental and Educational Psychology ,Computer Science (miscellaneous) ,Transferable skills analysis ,media_common ,Medical education ,Teamwork ,experiential learning ,05 social sciences ,050301 education ,College athletics ,Computer Science Applications ,transferable skills ,Coursework ,competitive advantage ,lcsh:L ,Psychology ,0503 education ,050203 business & management ,lcsh:Education - Abstract
National Collegiate Athletic Association (NCAA) student-athletes represent a unique subculture on college campuses, and the athlete must balance the rigors of coursework, athletics, and the non-traditional dynamics associated with being an athlete, which include &ldquo, dumb jock&rdquo, stereotypes, isolation, negative criticism, and the fear associated with athletic retirement. Unlike non-athletes, these students face increasing pressure from outside sources, including family, coaches, and fans, to be the best. However, participation in athletics gives student-athletes an opportunity to learn valuable skills and characteristics that are transferrable to the workplace. This mixed-method research extracted descriptive data to identify the characteristics learned through athletics, the skill-sets potential employers value the most, and how those skills are transferable to the workplace. Those characteristics include refined leadership, communication skills, and an ability to multi-task with a laser-sharp focus. Student-athletes are assertive, driven, understand the concept of teamwork, and handle constructive criticism without adverse reactions. The results show that when student-athletes engage in the classroom and absorb the learning opportunities provided through athletics, student-athletes can have a competitive advantage in the job marketplace.
- Published
- 2019
- Full Text
- View/download PDF
7. Educational Technology Leadership Conference Helps Digital Immigrants Understand Digital Natives.
- Author
-
Mahoney, Lisa Coffey
- Subjects
CONFERENCES & conventions ,EDUCATIONAL technology conferences ,EDUCATIONAL innovations - Abstract
The article presents information on the Educational Technology Leadership Conference held at the Bishop O'Dowd High School in Oakland, California on October 28, 2006. The conference was planned by an association of technology leaders and heads of various schools. Writer Marc Prensky, in his keynote speech, encouraged educators to engage students electronically. A group discussion about technologies that can be used in education was also included in the conference.
- Published
- 2007
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.