Progress 10/01/00 to 09/30/01
Outputs
na
Impacts
(N/A)
Publications
- No publications reported this period
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Progress 01/01/97 to 12/31/97
Outputs
The Department of Statistics conducts research in statistics and biomathematics applicable to problems in the life sciences and agriculture, and provides consulting services in experimental and survey design, data management, data analysis, biomathematical modeling and statistical computing to the research staff of the North Carolina Agricultural Research Service. The sample of publications generated through the activities of the Experimental Statistics Computing Services project listed below suggests the breadth of the work. Some collaborations involve graduate students in statistics who participate in a supervised consulting program as part of their training. During the last fiscal year, department faculty met over 800 different clients. These collaborations involved NCARS departments and programs.
Impacts
(N/A)
Publications
- BAYNES, R.E., BROWNIE, C., FREEMAN, H. AND RIVIEE, J.E. 1996. In vitro percutaneous absorption of benzidine in complex mechanistically defined chemical mixtures. Toxicology and Applied Pharmacology
- BROWNIE, C. and GUMPERTZ, M. 1997. Validity of spatial analyses for large field trials. Jour. of Agri., Biological and Environmental Statistics 2:1-23.--- GUMPERTZ, M.L. and CLARKE, G.P.Y. 1996. Two stage mixed model analysis using expected value transformations.
- GUMPERTZ, M.L., GRAHAM, J.M. and RISTAINO, J.B. 1997. Autologistic model of spatial pattern of Phytophthora epidemic in bell pepper: Effects of soil variables on disease presence. Jour. of Agri., Bio., and Env. Stat. 2:130-155.---
- STEFANSKI, L.A. and BAY, J.M. 1966. Parametric jackknife deconvolution of finite population CDF estimators. Biometrika 83:407-417. SYLVIA, K.E., W.M. WALTER and GIESBRECHT, F.G. 1997. Alkali processed sweet potato french fries. Journal of Food Quality
- SWALLOW, W.H. and KIANIFARD, F. 1996. Using robust scale estimates in detecting multiple outliers in linear regression. Biometrics
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Progress 01/01/94 to 12/30/94
Outputs
The Department of Statistics conducts research in statistics and biomathematics applicable to problems in biology and agriculture, and provides consulting services in experimental and survey design, data management, data analysis, biomathematical modeling and statistical computing to the research staff of the North Carolina Agricultural Research Service. The sample of publications listed below suggests the breadth of the work. Some collaborations involve graduate students in statistics who participate in a supervised consulting program as part of their training. During the last fiscal year, department faculty met nearly 900 different clients. These collaborations involved 19 N.C.A.R.S. departments and programs.
Impacts
(N/A)
Publications
- HUGHES-OLIVER, J. M., and SWALLOW, W.H. 1994. A two-stage adaptive group-testing procedure for estimating small proportions. J. Amer. Statist. Assoc. 89:982-993.
- MONAHAN, J. 1994. Testing the Behavior of Importance Sampling Weights. ComputingScience and Statistics. 25:112-115.
- WEIR, B.S. 1994. DNA profiling on trial. Nature. 369-351pp.
- BROWNIE, C., and BOOS, D.D. 1994. Type I error robustness of ANOVA and ANOVA on ranks when the number of treatments is large. Biometrics. 50:542-549.
- COCKERHAM, C.C. 1994. Further observations on the evolution of additive genetic variation with mutation. Theoretical Population Biology. 45:92-100.
- ELLNER, S., and HAIRSTON Jr., N.G. 1994. Role of overlapping generations in maintaining genetic variation in a fluctuating environment. American Naturalist.143:403-417.
- GILTINAN, D. M., and DAVIDIAN, M. 1994. Assays for recombinant proteins: a problem in nonlinear calibration. Statistics in Medicine. 13:1165-1179.
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Progress 01/01/92 to 12/30/92
Outputs
The Department of Statistics conducts research in statistics and biomathematics applicable to problems in biology and agriculture and provides consulting services in experiment and survey design, data management, data analysis, biomathematical modeling and statistical computing to the research staff of the North Carolina Agricultural Research Service. The sample of publications listed below indicates the breadth of the work. Some collaborations involve graduate students in statistics who participate in a supervised consulting program as part of their training. During the last fiscal year, department faculty met nearly 900 different clients. These collaborations involved 18 N.C.A.R.S. departments and programs.
Impacts
(N/A)
Publications
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Progress 01/01/91 to 12/30/91
Outputs
The Department of Statistics conducts research in statistics and biomathematics applicable to problems in biology and agriculture and provides consulting services in experiment and survey design, data management, data analysis, biomathematical modeling and statistical computing to the research staff of the North Carolina Agricultural Research Service. The sample of publications listed below indicates the breadth of the work. Some collaborations involve graduate students in statistics who participate in a supervised consulting program as part of their training. During the last fiscal year, department faculty met over 900 different clients. These collaborations involved 14 NCARS departments.
Impacts
(N/A)
Publications
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Progress 01/01/90 to 12/30/90
Outputs
The Department of Statistics conducts research in statistics and biomathematics applicable to problems in biology and agriculture and provides consulting services in experiment and survey design, data management, data analysis, biomathematical modeling and statistical computing to the research staff of the North Carolina Agricultural Research Service. The sample of publications listed below indicates the breadth of the work. Some collaborations involve graduate students in statistics who participate in a supervised consulting program as part of their training. During the last fiscal year, department faculty met about 650 different clients.
Impacts
(N/A)
Publications
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Progress 01/01/89 to 12/30/89
Outputs
The Department of Statistics conducts research in statistics and biomathematics applicable to problems in biology and agriculture and provides consulting services in experiment and survey design, data management, data analysis, biomathematical modeling and statistical computing to the research staff of the North Carolina Agricultural Research Service. The sample of publications listed below indicates the breadth of the work. Some collaborations involve graduate students in statistics who participate in a supervised consulting program as part of their training. This year there were 37 student registrations and over 172 project reports prepared under the program.
Impacts
(N/A)
Publications
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Progress 01/01/88 to 12/30/88
Outputs
The Department of Statistics conducts research in statistics and biomathematics applicable to problems in biology and agriculture and provides consulting services in experiment and survey design, data management, data analysis, biomathematical modeling and statistical computing to the research staff of the North Carolina Agricultural Research Service. The sample of publications listed below indicates the breadth of the work. Some collaborations involve graduate students in statistics who participate in a supervised consulting program as part of their training. This year there were 32 student registrations and over 125 project reports prepared under the program.
Impacts
(N/A)
Publications
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Progress 01/01/87 to 12/30/87
Outputs
The Department of Statistics conducts research in statistics and biomathematics applicable to problems in biology and agriculture and provides consulting services in experiment and survey design, data management, data analysis, biomathematical modeling and statistical computing to the research staff of the North Carolina Agricultural Research Service. The sample of publications listed below indicates the breadth of the work. Some collaborations involve graduate students in statistics who participate in a supervised consulting program as part of their training. This year there were 23 student registrations and over 100 project reports prepared under the program.
Impacts
(N/A)
Publications
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Progress 01/01/86 to 12/30/86
Outputs
The Department of Statistics provides consulting and collaborative research services in experiment and survey design, data management, data analysis, biomathematical modeling and statistical computing to the research staff of the North Carolina Agricultural Research Service. This service extends to review of manuscripts and research proposals for appropriateness of study design and data analysis. The sample of publications listed below indicates the breadth of the collaborations. Some of these collaborations involve graduate students in statistics who participate in a supervised consulting program as part of their training. This year there were 25 student registrations and some 170 project reports prepared under the program. Department staff are also engaged in a comprehensive evaluation of microcomputer statistical packages.
Impacts
(N/A)
Publications
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Progress 01/01/85 to 12/30/85
Outputs
The Department of Statistics provides consulting and collaborative research services in experiment and survey design, data management, data analysis, biomathematical modeling and statistical computing to the research staff of the North Carolina Agricultural Research Service. This service extends to review of manuscripts and research proposals for appropriateness of study design and data analysis. The sample of publications listed below indicates the breadth of the collaborations. Some of these collaborations involve graduate students in statistics who participate in a supervised consulting program as part of their training. This year there were 38 student registrations and some 110 project reports prepared under the program. A new member has been added to the staff during the year with special responsibility for statistical analysis using microcomputers. He has initiated a comparative study of statistical software available for such computers.
Impacts
(N/A)
Publications
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Progress 01/01/84 to 12/30/84
Outputs
The Department of Statistics provides consulting and collaborative research services in experiment design, data analysis, biomathematical modeling, statistical computing and computer programming to the research staff of the North Carolina Agricultural Research Service. These activities also include review of manuscripts and research proposals for appropriateness of experimental design and choice of methods of data analyses. The sample of publications listed below suggests the breadth of the collaborations. A new feature of the program this year was the involvement of graduate students from the Department of Statistics as statistical consultants. A total of 29 students, under the supervision of faculty members, consulted with approximately 185 clients about a wide range of agriculturally related statistical analyses. These consultations concerned aspects of statistical analysis from experimental planning and design to final analysis of experimental data.
Impacts
(N/A)
Publications
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Progress 01/01/83 to 12/30/83
Outputs
The Department of Statistics provides consulting and collaborative research services in experiment design, data analysis, biomathematical modeling, statistical computing and computer programming to the research staff of the North Carolina Agricultural Research Service. These activities also include review of manuscripts and research proposals for appropriateness of experimental design and choice of methods of data analyses. The service involves 17 faculty and 6 support personnel. The sample of publications listed below suggests the breadth of the collaborations. Statistical computing programs and data management systems are continuously upgraded and modified to meet changing needs and changing computer technology. Current examples include statistical graphics and microcomputer applications. In addition faculty members pursue research into the development of new statistical methods and the adaptation of existing methods for application to agricultural research.
Impacts
(N/A)
Publications
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Progress 01/01/82 to 12/30/82
Outputs
The Department of Statistics provides consulting and collaborative research services in experiment design, data analysis, biomathematical modeling, statistical computing and computer programming to the research staff of the North Carolina Agricultural Research Service. These activities also include review of manuscripts and research proposals for appropriateness of experimental design and choice of methods of data analyses. The service involves 17 faculty and 6 support personnel. The sample of publications listed below suggest the breadth of the collaborations. Statistical computing programs and data management systems are continuously upgraded and modified to meet changing needs and changing computer technology. In addition faculty members pursue research into the development of new statistical methods and the adaptation of existing methods for application to agricultural research.
Impacts
(N/A)
Publications
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Progress 01/01/81 to 12/30/81
Outputs
The Department of Statistics provides consulting and collaborative research services in experiment design, data analysis, biomathematical modeling, statistical computing and computer programming to the research staff of the North Carolina Agricultural Research Service. These activities also include review of manuscripts and research proposals for appropriateness of experimental design and choice of methods of data analyses. The service is carried out by 17 faculty and 7 support personnel. The sample of publications listed below suggest the breadth of the collaborations. Efforts continue to expand in the area of mathematical modeling of biological and agricultural systems with new projects proposed in animal physiology and plant pest systems. Statistical computing programs and data management systems are continuously upgraded and modified to meet changing needs and changing computer technology.
Impacts
(N/A)
Publications
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Progress 01/01/80 to 12/30/80
Outputs
The research staff of the North Carolina Agricultural Research Service has been provided statistical and biomathematical consulting service, computer programming and statistical computing service and cooperative research by 16 faculty and 7 support personnel. Assistance has also been provided in manuscript review and in the review of research project outlines. Progress continues in integrating the Biomathematics Program into cooperative projects and endeavors in the modeling of agricultural and biological systems and related work. Work continues in the development of and improvement of computer programs and data management systems, with the Statistical Analysis System (SAS) continuing to be heavily used in meeting many of the statistical computing and data handling needs.
Impacts
(N/A)
Publications
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Progress 01/01/79 to 12/30/79
Outputs
Statistical and biomatjematical consulting service, cooperative research, computer programming and service has been provided to the research staff of the North Carolina Agricultural Research Service by 16 faculty and 5 support personnel. Assistance has also been provided in manuscript review and in the revview of research project outlines. Progress continues in broadening the Biomathematics Program, and there are several cooperative endeavors in modeling biological and agricultural systems and related work. Work continues in the development of the improvement of computer programs and data management systems, with the Statistical Analysis System (SAS) continuing to be heavily used in meeting many computing needs.
Impacts
(N/A)
Publications
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Progress 01/01/78 to 12/30/78
Outputs
Statistical and biomathematical consulting service, computer programming and service has been provided to the research staff of the Agricultural Experiment Station by 16 faculty and 5 support personnel. In addition, assistance has been provided in manuscript review, and in review of research project outlines. Progress is being made in broadening the Biomathematics Program by adding Associate Faculty and planning for cooperative research. The statistical Analysis System (SAS) is heavily used for data management and processing, and it susefulness continues to increase because of improvement of the System.
Impacts
(N/A)
Publications
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Progress 01/01/77 to 12/30/77
Outputs
The research staff of the Agricultural Experiment Station has been provided statistical and biomathematical consulting service, computer programming and service by 13 faculty members and 4 support personnel. The Statistical Analysis System (SAS) continues to be heavily used in the analysis of research data. The statistical liaison system, assigning one or more statisticians to each department, continues to function well, and much work is done by the liaison in reviewing research projects and manuscripts. Three statisticians have been heavily involved in the Integrated Pest Orchard Management System (IPOMS) interdisciplinary project in its planning, data gathering and analysis. The Biomathematics Program is being broadened to hopefully provide more service to the research staff.
Impacts
(N/A)
Publications
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Progress 01/01/76 to 12/30/76
Outputs
Statistical and biomathematical consulting and computing service has been provided to the research staff of the Agricultural Experiment Station. In addition, the various departments have been provided assistance in the formulation and review of projects, and in the review of manuscripts through thestatistical liaison personnel. Also, consulting has led in several instances tocooperative research efforts resulting in joint publications with the statistician. While the Statistical Analysis System continues to be the major instrument for data summary and analysis, several special programs were written to handle individual situations.
Impacts
(N/A)
Publications
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Progress 01/01/75 to 12/30/75
Outputs
The research staff of the North Carolina Agricultural Experiment Station has been provided statistical and biomathematical consulting service, computer programming and service, and statistical computing service by 16 faculty memberswith five support personnel. This is the second year of the use of designated statistical liaison personnel to each of the departments in the Experiment Station; this plan appears to provide for more participation in project planning& review, & in review of manuscripts. As a consequence, it has involved more personnel time. The Statistical Analysis System (SAS) continues to be the primary instrument for the summary and analysis of research data.
Impacts
(N/A)
Publications
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Progress 01/01/74 to 12/30/74
Outputs
Statistical and biomathematical consulting service, statistical computing service, computer programming consulting and service have been provided to the research staff of the Agricultural Experiment Station by 16 faculty members (part-time) of the Department of Statistics. Some of the consulting work has developed into cooperative research efforts between the personnel involved. During the year, a statistical liaison person was appointed from the Department of Statistics for each department in the Agricultural Experiment Station to facilitate communication regarding the various aspects of statistical consulting, computer programming and service and project and manuscript review procedures. The Statistical Analysis System (SAS), supported by a regional project, is in the process of further development and expansion, and is used extensively in the summary and analysis of reserach data.
Impacts
(N/A)
Publications
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Progress 01/01/73 to 12/30/73
Outputs
The Department of Statistics has provided statistical consulting and cooperativeresearch, and computer programming, consulting and services to the research staff of the Agricultural Experiment Station, including the Home Economics groupat Greensboro. Thirteen faculty members have devoted part-time to full-time, and four computer programmers and statistical aides have devoted full-time to this task. In several areas, cooperation has been of sufficient depth to merit joint publications. Emphasis is given to providing service in the design and planning of experiments and surveys, and in methods of data collection. In a parallel project, the Statistical Analysis System (SAS) is being developed and maintained, and SAS is a major tool in the statistical analysis of research data. Where necessary, programmers supplement of augment SAS for a particular analysis, or write a special program.
Impacts
(N/A)
Publications
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Progress 01/01/69 to 12/30/69
Outputs
Statistical consulting and computer programming, consulting, and services have been provided for the research staff of the Agricultural Experiment Station by the staff of the Department of Experimental Statistics. Twelve faculty members and four computer programmers have devoted part or all of their time to this project. In several areas (see list of publications) collaboration has been in sufficient depth to share publication responsibility. Data reduction and statistical analysis has been facilitated by further development of the Statistical Analysis System (SAS) by A. J. Barr and J. H. Goodnight. The SAS iswritten in Computer Language, easily understood by the scientist and statistician, with support for its development coming also from an NIH computer grant. Work is also underway to develop data acquisition systems for laboratoryequipment, and to introduce more research staff to the use of remote low speed computer terminals.
Impacts
(N/A)
Publications
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Progress 01/01/68 to 12/30/68
Outputs
The Department of Experimental Statistics has provided extensive statistical consulting, computer programming, and computing service to the research staff ofthe North Carolina Agricultural Experiment Station. Twelve faculty members and four computer programmers have devoted part or all of their effort to this project. During this past year a new system of allocation of computer time to departments was initiated, and it appears to be functioning smoothly. This mechanism of allocation allows the decisions on priority of computing to be madeat the departmental level, and at the same time provides for frequent technical reviews by experienced computer personnel in the Department of Experimental Statistics.
Impacts
(N/A)
Publications
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Progress 01/01/67 to 12/30/67
Outputs
A staff of 10 statisticians and three computer consultants and programmers have provided statistical consulting and computing services to the research staff of the Agricultural Experiment Station. This service has included consulting on the planning, design and analysis of experiments and surveys, including projectsin Home Economics from Greensboro, the writing of computer programs, where necessary, and the processing of research data, cooperative research in areas where technique and methodology needs to be explored and developed, and providing special training sessions for interested faculty and graduate studentsin computer programming. Through the Department of Soil Science, special assistance has been provided the Soil Testing Division in developing a computer program system for making fertilizer and lime recommendations from soil test results and supplementary information.
Impacts
(N/A)
Publications
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