Annual/Termination Reports:

[11/21/2002] [07/11/2003] [09/28/2004] [09/13/2005] [09/19/2006]

Report Information

Participants

Brief Summary of Minutes

Accomplishments

Publications

Impact Statements

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Report Information

Participants

Brief Summary of Minutes

Accomplishments

Publications

Impact Statements

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Report Information

Participants

OFFICIAL MEMBERS PRESENT: J. Aleong (VT), T. Bailey (IA), B. Bishop (OH), G. Bollero (IL), D. Bullock (IL), M. Christman (MD), P. Cornelius (KY), B. Craig (IN), L. Douglass (MD), S. Durham (UT), G. Fernandez (NV), E. Gbur (AR), M. Hinds (Pioneer), D. Meek (USDA-ARS-MWA), B. Momen (MD), D. Nettleton (IA), C. Ren (SD), W. Stroup (NE), R. Tempelman (MI), M. West (USDA-ARS-NPA);

OFFICIAL MEMBERS ABSENT: L. Miller (USDA-CSREES, Admin.), E. Russek-Cohen (MD), D. Whittaker (IN, Admin.), T. Park (GA), B. Shafii (ID), J. Zhu (WI) ;

GUESTS/PARTICIPANTS: M. Kramer (USDA-ARS-BA), G. Milliken (KS), B. Vinyard (USDA-ARS), H. Zhang (WA), and 21 members of USSES and the University of Florida

Brief Summary of Minutes

TECHNICAL PROGRAM: The meeting began at 8:45 am on Monday, July 11 with opening remarks by Ramon Littell. The theme of the morning session was the statistical aspects of microarray experiments. Technical presentations were given by Bruce Craig ("Statistical issues"), Rob Templeman ("Design issues"), and Dan Nettleton ("Examples of data analysis"). The afternoon session was devoted to a dry run of the spatial data workshop which is being developed by NCR-170. Presentations were given by Ed Gbur ("Basics of spatial data"), Bruce Craig ("Analysis of lattice data" and "Design in spatial experiments," the latter with Jun Zhu), and Mark West ("Combining multi-scale spatial data"). The afternoon session ended at 5:15 pm.

Tuesday's technical session began at 8:30 am with a presentation by Jamie Baldwin ("What does the Kenwood-Roger option do?"). The remainder of the session consisted of spatial workshop presentations by David Meek ("Screening procedures for databases") and John Aleong ("Quality control methods for spatial data").

BUSINESS MEETING: The business meeting began at 10:00 am with Ed Gbur presiding. Ramon Littell was thanked for providing an enjoyable meeting. The following items were discussed.

(1) Suggestions for a new administrative advisor were requested.

(2) Participants who wish to become official members were reminded that they need to file the necessary paperwork.

(3) The midterm report has been replaced by required annual reports which must follow a prescribed format, including a list of project activities, outputs, accomplishments and impacts. Ed requested all participants forward information to him regarding their recent activities.

(4) The 2005 meeting will be held in Fort Collins on July 14 and 15 with Mark West as host. George Milliken agreed to serve as program chair. One objective of next year's program will be to introduce potential new topics for the project. Suggested topics of interest to members were given to George. The 2006 meeting will be hosted by Jun Zhu at the University of Wisconsin.

(5) George Fernandez suggested that a news-group/discussion board type web site be established for NCR-170 members to interact during the year. Mark Hinds agreed to set up and maintain such a site.

The discussion then turned to the spatial workshop. Members provided feedback to the speakers and suggestions on how they might modify their presentations to match audience background. It was agreed that the workshop would be developed as a series of modules to allow it to be tailored to the needs of various subject matter audiences. The possibility of creating a CD containing a set of worked out spatial data analyses to be used in conjunction with the workshop was discussed. We probably could not sell such a CD separately because of copyright issues but it might be possible to give it to workshop attendees with production costs included as part of the workshop fee. George Milliken suggested that the workshop might be given to a subject matter audience in conjunction with next years Kansas State Conference on Applied Statistics in Agriculture. George would need a commitment by January at the latest. It was decided to set up an ftp site where draft versions of the modules would be available for feedback directly to the authors from project members during the year. Ed Gbur agreed to set up such a site. Finally, it was decided that the workshop would not be presented as part of next years technical program.

The meeting adjourned at approximately 11:30 am.

Accomplishments

ACCOMPLISHMENTS AND IMPACTS: Statisticians who consult and do research in an Agricultural Experiment Station environment enable land grant institutions to perform their agricultural research missions more effectively and efficiently than would otherwise be possible. However, most stations have at most one or two professional statisticians who are not, and can not be expected to be, experts in every area of statistics. This multi-state committee brings together statisticians to work cooperatively to determine the best current approaches to common statistical problems and to help guide future directions of sound statistical practice. In addition to group outputs such as workshops, it serves as a resource for its members and a sounding board for new ideas in their applied statistical research. As a result, all members are able to provide more effective assistance to agricultural researchers addressing national research priorities than they would without NCR-170.<br /> <br /> The highly successful mixed model workshop developed by project members continues to be offered at regional and national subject matter meetings.<br /> <br /> OUTPUTS: The self-education phase in spatial statistics has essentially ended with the dry run of the workshop at the project's annual meeting. The workshop will be offered to subject matter audiences within the next year.<br /> <br /> In addition, committee members have reported the following project related activities. <br /> <br /> Mixed model workshop presented at:<br /> <br /> 2004 Federation of Animal Science Societies annual meeting in St. Louis by Rob Tempelman, Larry Douglass and Bruce Craig.<br /> <br /> Department of Plants, Soils and Biometeorology at Utah State in December 2003 by Susan Durham.<br /> <br /> USDA-ARS researchers in Logan, Utah in February 2004 by Mark West and Susan Durham. Logistic regression was also included in the workshop.<br /> <br /> USDA-ARS researchers and Utah State faculty in April 2004 by Susan Durham with emphasis on repeated measures.<br /> <br /> Workshop entitled "Linear and nonlinear models for correlated data" presented at the 2004 Wildlife Society annual meeting in Calgary. Instructors were Mary Christman and Larry Douglass. 60 attendees.<br /> <br /> Invited session at the Eastern North American Region of the International Biometric Society meeting in March 2004 entitled "Statistical models for complex data in agricultural and environmental studies."<br /> Organizers were Estelle Russek-Cohen and Jun Zhu; chair was Mary Christman.<br /> Jun Zhu presented a paper entitled "A spatial-temporal auto-logistic regression model for the analysis of Southern Pine Beetle outbreaks."<br /> <br /> Selected presentations at the2004 Kansas State University Conference on Applied Statistics in Agriculture by:<br /> <br /> Christman, M.C. and I. Estevez. Methods for the analysis of movement and use of space of animals in confinement.<br /> <br /> OHara, C.G., J.L. Willers and G.A. Milliken. Spatial measurement parameters for characterizing precision agriculture.<br /> <br /> Tian, F., B. Shafii, C.J. Williams, T.S. Prather, W.J. Price and L.W. Lass. Prediction of yellow star thistle survival and movement over time and space.<br /> <br /> Meek, D. Covariates for problems in precision agriculture.<br /> <br /> Presentation by R.J. Tempelman entitled "Experimental design for gene expression microarrays" at the Long Oligonucleotide Microarray Workshop at the University of Arizona in May 2004.<br /> <br /> Several project members have become involved with the USDA-ARS Precision Agriculture group.<br /> <br /> SPECIFIC GOALS FOR THE NEXT THREE YEARS: (1) Complete the development of spatial workshops and begin to offer them to subject matter audiences. (2) Develop methodology to address both spatial and general statistical problems in the area of precision agriculture. (3) Continue to offer the mixed model workshop upon request from subject matter groups. (4) Explore possible future directions for the project.

Publications

Gbur, E.E., B.A. Craig and H. Zhang (2004). A simulation study of exponential semivariogram estimation. In Proceedings of the 2003 Kansas State University Conference on Applied Statistics in Agriculture. G.A. Milliken (ed). Manhattan, KS: Kansas State University. 121-136.<br /> <br /> Kaspar, T., D. Pulido, T. Fenton, T. Colvin, D. Karlen, D. Jaynes, and D. Meek (2004). Relationship of corn and soybean yield to soil and terrain properties. Agronomy Journal, 96, 700-709.<br /> <br /> Kaspar, T.C., T.S. Colvin, D.B. Jaynes, D.L. Karlen, D.E. James, D.W. Meek, D. Pulido, and H. Butler (2003). Estimating corn yield using six years of yield data and terrain attributes. Journal of Precision Agriciculture, 4, 87-101.<br /> <br /> Meek, D.W. and T.J. Sauer (2004). Suggestions for presenting kriging data. In Proceedings of the 2003 Kansas State University Conference on Applied Statistics in Agriculture. G.A. Milliken (ed). Manhattan, KS: Kansas State University. 258-276.<br /> <br /> Tempelman, R.J. (2004). Experimental design and statistical methods for classical and bioequivalence hypothesis testing with an application to dairy nutrition studies. Journal of Animal Science, 83 (E suppl.), E162-E172.<br /> <br /> Russek-Cohen, E. and M. Christman (2004). Statistical methods in environmental monitoring and assessment. In Environmental Monitoring. G.B. Wiersma (ed). CRC Press: Boca Raton, FL.<br /> <br /> Zhang, H. (2004). Inconsistent estimation and asymptotically equal interpolations in model-based geostatistics. Journal of the American Statistical Association, 99, 250-261.<br /> <br /> Zhu, J., C.L.S. Morgan, J.M. Norman, W. Yue and B. Lowery (2004). Combined mapping of soil properties using a multi-scale tree-structured spatial model. Geoderma, 118, 321-334.

Impact Statements

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Participants

Official Members Present:; R. Alldredge (WA); T. Bailey (IA); B. Bishop (OH); G. Bollero (IL); J. Boyer (KS, Admin.); D. Bullock (IL); P. Cornelius (KY); B. Craig (IN); L. Douglass (MD); S. Durham (UT); E. Gbur (AR); M. Hinds (Pioneer); D. Meek (USDA-ARS); L. Miller (USDA-CSREES, Admin.); G. Milliken (KS); W. Stroup (NE); R. Tempelman (MI); M. West (USDA-ARS); J. Zhu (WI);
;


Guests/Participants:; S. Duke (USDA-ARS); M. Kramer (USDA-ARS); G. Richardson (retired USDA-ARS); J. Willers (USDA-ARS)

Brief Summary of Minutes

Technical program: The meeting began at 8:30 am on Thursday, July 14 with opening remarks by Mark West and Larry Chandler, Associate Director, ARS Northern Plains Area. Technical presentations in the morning session were given by Rob Tempelman (Mixed model analysis of microarray data: Some issues we're struggling with), Rich Alldredge (Structural equation modeling) and Mark West (Analyzing spectroscopic data with methods of partial least squares). The theme of the afternoon session was statistical problems in precision agriculture. Presentations were given by Walt Stroup (Mixed models and design of experiments), Jeff Willers (Spatial information in precision agriculture management of cotton) and George Milliken (Using spatial information in the design and analysis of experiments to evaluate the effectiveness of precision agricultural management systems - coauthored with Jeff Willers and Chuck O'Hara). The afternoon session ended at 5:00 pm.

Business meeting: The business meeting began at 8:30 am on Friday, July 15 with Ed Gbur presiding. Mark West and George Milliken were thanked for providing an enjoyable meeting. The following items were discussed.

(1) Next year's meeting will be held on July 13-14, 2006 at the University of Wisconsin with Jun Zhu as host and Don Bullock as Program Chair. The 2007 meeting, which may be joint with USSES, was tentatively scheduled for Utah. The 2008 meeting was tentatively scheduled for Ohio.

(2) It was decided that the NCR project label should be converted to NCCC to be consistent with the new national project labeling scheme.

(3) The Spatial Workshop given on the day after the Conference on Applied Statistics in Agriculture at Kansas State was discussed. There were approximately 25 attendees from Kansas State and USDA. Feedback from participants varied greatly and reflected the diverse backgrounds of the audience. A workshop proposal has been submitted to the Tri-Societies (ASA, CSSA, SSSA) for their 2006 annual meeting. Additional potential meetings at which the workshop could be presented were discussed and several people volunteered to contact the host societies. Disciplines included weed science, plant pathology, range science, agricultural engineering and precision agriculture. The spatial workshop committee will continue to revise the content and possibly add a spatial point process module.

(4) Larry Miller presented a report on CSREES staffing, program reviews and the current status of the FY2006 budget.

(5) Project members were reminded to send their contributions for the accomplishment, output and impact sections of the annual report to Ed Gbur (egbur@uark.edu) as soon as possible. The target completion date for the report is mid-August so as to avoid the beginning of fall semester and the project renewal process.

(6) The current project is due to expire on Sept. 30, 2006. The renewal process will take place this fall. The deadline for each step in the renewal was discussed. Members were reminded that a new Appendix E form will need to be filed to retain membership on the renewed project. The writing committee will consist of Bruce Craig, Ed Gbur and Rob Tempelman.

(7) The group discussed topics which would be included in the renewal. It was decided to continue with mixed models and spatial statistics, especially as they relate to statistical modeling of agricultural systems. Discussion then focused on the increasing number of collaborative projects in which large the numbers of variables are collected on very few experimental units and traditional statistical analyses are often not applicable. Examples of such application areas include biotechnology, precision agriculture and chemometrics. It was decided that the new focus would be on this type of statistical problem. The current project proposal was reviewed with discussion centering on using it as the basis of the renewal proposal.

The meeting adjourned at approximately 11:00 am.

Accomplishments

The spatial statistics workshop was presented to a group of 25 Kansas State University and USDA scientists in Manhattan, Kansas in April 2005 by Ed Gbur, Jun Zhu and Mary Christman. Contacts are being made with several subject matter societies to offer the workshop in conjuction with their annual meetings.<br /> <br /> In addition, committee members have reported the following project related activities. <br /> <br /> Selected presentations at the 2005 Kansas State University Conference on Applied Statistics in Agriculture by:<br /> <br /> Meek, D.W. and M.D. Tomer. Characterizing the discharge distribution from small agricultural watersheds.<br /> <br /> Zhu, J. and G. Morgan. Nonparametric block bootstrap for analyzing repeated-measures and spatially correlated data.<br /> <br /> Poster presentation entitled "Recommendations for fitting log profile data" by D.W. Meek at the 2004 American Society of Agronomy annual meetings.<br /> <br /> Several project members have become involved with the USDA-ARS Precision Agriculture group.<br /> <br /> Ed Gbur spent his sabbatical leave in the Statistics Department at the Ohio State University working with Noel Cressie (OSU) and Yongtao Guan (University of Miami) to develop methodology to analyze spatial point processes on cylinders and truncated cones. The research was motivated by collaborative work between Ed Gbur and entomologists at the University of Arkansas to model the spatial attack patterns of red oak borers on oak trees.<br /> <br /> Ed Gbur is a member of an interdisciplinary team of scientists at the University of Arkansas for a project entitled "Effectiveness and optimization of BMPs in improving water quality from an agricultural watershed" which was funded by USDA-CAEP. A portion of the project will involve the analysis of spatial data.<br /> <br /> Bruce Craig served as chair of the Purdue School of Science Spatial Statistics Search Committee. He was also named Director of the Purdue University Statistical Consulting Service and a University Faculty Scholar.<br /> <br /> Rich Alldredge provided complex mixed model analyses for the Spokane County Direct Seeding Project. The project was funded by USDA-SARE to Washington State University Extension Service.<br /> <br /> Rich Alldredge served as an external reviewer for a proposed project entitled "Estimation and Calibration of Dose-Response Functions" for the Idaho Agricultural Experiment Station. The project will involve mixed model analysis of variance.<br />

Publications

Ives, A.R. and J. Zhu (2005). Statistics for correlated data: phylogenies, space, and time. Ecological Applications. In press.<br /> <br /> Hartsock, N.J., T.G. Mueller, A.D. Karathanasis and P.L Cornelius (2005). Interpreting soil electrical conductivity and terrain attribute variability with soil surveys. Journal of Precision Agriculture, 6, 53-72.<br /> <br /> Jaynes, D.B., D.L. Dinnes, D.W. Meek, D.L. Karlen, C.A. Cambardella, and T.S. Clovin (2004). Using the late spring nitrate test to reduce nitrate loss within a watershed. Journal of Environmental Quality, 33, 669-677.<br /> <br /> Kladivko, E., J. Frankenberger, D. Jaynes, D. Meek, B. Jenkinson, and N. Fausey (2004). Nitrate leaching to subsurface drains as affected by drain spacing and changes in crop production system. Journal of Environmental Quality, 33,1803-1813.<br /> <br /> Malone, R.W., M.J. Shippilato, and D.W. Meek (2004). Relationship between herbicide concentration in percolate, percolate breakthrough time, and number of active macropores. Transactions of ASAE, 47(5), 1453-1456.<br /> <br /> Meek, D.W., J.H. Prueger, W.P. Kustas, and J.L. Hatfield (2005). Determining meaningful differences for SMACEX eddy covariance measurements. Journal of Hydrometorology. In press.<br /> <br /> Meek, D.W. and J.W. Singer (2004). Estimation of duration indices for repeated tensiometer readings. Agronomy Journal, 96, 1787-1790.<br /> <br /> Meek, D.W. and J.W. Singer (2005). An example of developing covariates for problems in precision agriculture. In Proceedings of the 2004 Kansas State University Conference on Applied Statistics in Agriculture. G.A. Milliken (ed). Manhattan, KS: Kansas State University. 270-278.<br /> <br /> Mueller, T.G., N.B. Pusuluri, P.L. Cornelius, K.K. Mathias, R.I. Barnhisel, and S.A. Shearer (2004). Map quality for ordinary kriging and inverse distance weighted interpolation. Soil Science Society of America Journal, 68, 2042-2047.<br /> <br /> Mueller, T.G., N.B. Pusuluri, K.K. Mathias, P.L. Cornelius, and R.I. Barnhisel (2004). Site-specific fertility management: A model for map quality. Soil Science Society of America Journal, 68, 2031-2041.<br /> <br /> Rosa, G.J.M, J.P. Steibel and R.J. Tempelman (2005). Reassessing design and analysis of two colour microarray experiments using mixed effects models. Comparative and Functional Genomics, 6, 123-131.<br /> <br /> Singer, J.W., R.W. Malone, D.W. Meek, and D. Drake (2004). Predicting yield loss in indeterminate soybean from pod density using simulated damage studies. Agronomy Journal, 96, 584-589.<br /> <br /> Singer, J.W. and D.W. Meek (2004). Repeated biomass removal affects soybean resource utilization and yield. Agronomy Journal, 96, 1382-1389.<br /> <br /> Tempelman, R.J. (2004). Experimental design and statistical methods for classical and bioequivalence hypothesis testing with an application to dairy nutrition studies. Journal of Animal Science, 82 (E. Suppl.), E162-E172.<br /> <br /> Tempelman, R.J. and G.J.M. Rosa (2004). Empirical Bayes approaches to mixed model inference in quantitative genetics. In Genetic Analysis of Complex Traits Using SAS. A. Saxton, (ed). Cary, NC: SAS Institute, Inc.149-178.<br /> <br /> Tempelman, R.J. (2005). Assessing statistical precision, power, and robustness of alternative experimental designs for two color microarray platforms based on mixed effects models. Veterinary Immunology and Immunopathology, 105, 175-186.<br /> <br /> Tomer, M.D., D.W. Meek, and L.A. Kramer (2005). Agricultural practices influence flow regimes of headwater streams in Western Iowa. Journal of Environmental Quality. In press.<br /> <br /> Zhu, J., Huang, H.-C., and Wu, C.T. (2005). Modeling spatial-temporal binary data using Markov random fields. Journal of Agricultural, Biological, and Environmental Statistics, 10, 212-225.

Impact Statements

1. The highly successful mixed model workshop developed by project members continues to be offered at regional and national subject matter meetings. The newly developed spatial statistics workshop has been offered for the first time and proposals will be submitted to several subject matter professional societies to offer the workshop at their annual meetings.
2. As a result of the development of the mixed model workshop, several project members with teaching responsibilities have revised their experimental design classes to include mixed model analysis of variance methodology and the associated data analysis using SAS. Such revisions help train the next generation of scientitsts using the most recent advances in statistical methodology.
3. In addition to group outputs such as workshops, the project serves as a resource for its members and a sounding board for new ideas in their applied statistical research. As a result, all members are able to provide more effective assistance to agricultural researchers addressing national research priorities than they would without NCR-170.

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Report Information

Participants

Ted Bailey (IA);
Bert Bishop (OH);
German Bollero (IL);
John Boyer (KS, Admin.);
Don Bullock (IL);
Bruce Craig (IN);
Larry Douglass (MD);
Sara Duke (USDA-ARS);
Susan Durham (UT);
George Fernandez (NV);
Ed Gbur (AR);
Mark Hinds (Pioneer);
David Meek (USDA-ARS);
George Milliken (KS);
Dan Nettleton (IA);
Walt Stroup (NE);
Rob Tempelman (MI);
Mark West (USDA-ARS);
Hao Zhang (WA);
Jun Zhu (WI);
Matt Kramer (USDA-ARS);
John Stevens (UT)

Brief Summary of Minutes

Technical program: The meeting began at 9:15 a.m. on Thursday, July 13 with opening remarks by Jun Zhu and Murray Clayton, Director of the Biometry Program at Wisconsin. Technical presentations in the morning session were given by Jun Zhu (Statistical modeling of spatial-temporal data in a forest entomology study) and George Fernandez (A SAS macro application for all possible model selection in PROC MIXED). Presentations in the afternoon session were given by Dan Nettleton (Microarray experimental design and analysis), Roxana Alexandridis (A unified approach to discover and classify tumor types using microarray data) Rob Tempelman (Hierarchical modeling of microarray data) and David Meek (Signal processing analysis using discrete Fourier transforms). The afternoon session ended at approximately 5:00 p.m. On Friday morning after the business meeting, Walt Stroup made the final techical presentation entitled "Initial experiences with SAS Proc GLIMMIX."

Business meeting: The business meeting began at 9:00 a.m. on Friday, July 14 with Ed Gbur presiding. Jun Zhu and Don Bullock were thanked for providing an enjoyable meeting. The following items were discussed.

(1) Next years meeting tentatively will be held jointly with USSES in Utah. The local arranagements chair will be Susan Durham and the program chair will be Mark Hinds. After some discussion it was decided to have the meeting on July 26-27 instead of the ususal mid-July dates because the Joint Statistics Meetings will be July 29-August 2 in Salt Lake City. It was felt that the later meeting date would help with travel costs for those attending JSM. The 2008 meeting was scheduled for Ohio.

(2) Ed Gbur reported that the project has been renewed until 2011. The current project ends on September 30 and the new project will begin on October 1. Final reports are no longer required since now the Directors use the set of annual reports, especially the accomplishments and impacts as they relate to our objectives, as the basis of their evaluation.

(3) Project members were reminded to send their contributions for the accomplishment, output and impact sections of the annual report to Ed (egbur@uark.edu) as soon as possible. The reporting period for this years report is July 2005 through September 2006. In the future, reporting periods will coincide with the Federal fiscal year. The target completion date for the report is mid-August to avoid the beginning of fall semester.

In the past, items have included publications (refereed and non-refereed), presentations (indicate if invited), workshops, grants, consulting projects, organization of sessions at meetings, teaching (for their effect on future scientists) and awards received. The annual report has a section entitled "Accomplishments and Impacts." The accomplishment part is straightforward. Impacts are a bit more difficult so any input as to the impact of what you are reporting would be very much appreciated.

(4) Don Bullock presented a report on his efforts to offer the spatial workshop at the annual meetings of various subject matter disciplines. He contacted the plant pathologists, entomologists, agricultural engineers and agronomists. As a result of his efforts, the workshop will be presented at the plant pathology annual meetings on July 29 in Quebec by Bruce Craig and Murray Clayton. Don believes that we will be approved for the 2007 agronomy meetings but was unsuccessful this year with the entomologists and agricultural engineers. He offered the following lessons that he learned this year about scheduling workshops:

(a) Subject matter groups are interested in our workshops.

(b) Find the right person to communicate with and keep the lines of communication open. Don't assume that the other person will take care of all of the details if you don't touch base with them regularly throughout the selection and scheduling process.

(c) Make sure that reimbursement arrangements are understood by all parties in advance.

Discussion then turned to future workshop offerings. It was noted that regional society meetings might be easier to deal with than national meetings and that it may take more than one try before being successful. It was also decided that the mixed model workshop would continue to be offered if organizations are interested. Walt Stroup suggested that ASA chapter meetings which target graduate students and M.S. level statisticians working outside of academics might be another place to do our workshops. John Boyer agreed to mention the availability of our workshops at the Council of Chapters meeting at JSM. Walt also suggested that agriculturally oriented social science groups might be interested in our workshops.

The following people agreed to contact subject matter groups about our mixed model and spatial workshops: Sara Duke  Society of Range Management; Walt Stroup  horticulture; Rob Tempelman  animal sciences; Susan Durham  ecology; Larry Douglass  entomology; Don Bullock  agronomy. Mary Christman will be contacted to check on the wildlife societies.

(5) The group discussed the focus on the new project since the new objective as described in the renewal request was very broad. Ed Gbur suggested that our group is large enough to have two separate topics related to the objective. The consensus of the members was that the two topics are genomics and generalized linear mixed models. Next years program should reflect both topics if possible.

The meeting adjourned at approximately 10:15 a.m. and was followed by the last presentation on the technical program.

Accomplishments

Workshops:<br /> <br /> The spatial statistics workshop was presented to a group of 40 participants at the Joint Meeting of the American Phytopathological Society, the Canadian Phytopathological Society and the Mycological Society of America in Quebec on July 2006 by Bruce Craig and Murray Clayton. The workshop is also scheduled to be presented at the Tri-Societies (ASA-CSSA-SSSA) annual meeting in November 2006.<br /> <br /> David Meek presented two in-house mixed model workshops at the National Soil Tilth Laboratory in December 2005 and February 2006.<br /> <br /> USDA-ARS statisticans at Beltsville organized and co-hosted a two day spatial statistics workshop with USGS and the U.S. Fish and Wildlife Service in March 2006. The impetus for the workshop came in part from the interaction between NCCC-170 and the ARS statisticians, some of whom are project members. In addition, four presentations were made by project members:<br /> <br /> Mary Christman. Lattice models with spatial dependencies: An introduction.<br /> <br /> Jun Zhu. Spatial sampling design and strategies.<br /> <br /> Mark Otto and David Meek. Diagnostics for spatial models.<br /> <br /> Mark West. Combining multi-scale spatial data. <p><br /> <br /> Presentations:<br /> <br /> Selected presentations at the 2006 Kansas State Conference on Applied Statistics in Agriculture were made by:<br /> <br /> George Fernandez. A SAS macro application for all possible model selection in the PROC MIXED procedure.<br /> <br /> David Meek (with J.W. Singer). Terrain effects on corn yield during a 7 year small-plot study.<br /> <br /> Bahman Shafii (with T.S. Prather, W.J. Price, L.W. Lass and D. Howard). Modelling dispersal of yellow starthistle in the canyon grasslands of North Central Idaho.<br /> <br /> <br /> <br /> Bruce Craig coauthored (with R. Becker) an invited presentation at the Joint Statistics Meetings in Minneapolis in August 2005 entitled "Metrics used to evaluate the Purdue University's Statistical Consulting Service." <br /> <br /> Mary Christman presented an invited paper entitled "Statistical issues in surveys of invasive species" at USDA-APHIS in March 2005 at Riverdale, Maryland.<br /> <br /> Bruce Craig coauthored (with N.S. Mosier) an invited paper entitled "Predicting cell capture from dilute samples for microfluidic biosensors" at an NISS Workshop: Food Safety at Iowa State University in October 2005. <br /> <br /> Mary Christman presented an invited paper entitled "Effect of model misspecification on estimating a spatial average" at the Western North American Region of the International Biometric Society annual meeting in June 2006.<br /> <br /> Mary Christman presented an invited paper entitled "Application and comparison of alternative spatial modeling approaches of zero inflated data" at the Joint Statistical Meetings in August 2006.<br /> <br /> Bruce Craig made a presentation entitled "Critically assessing the statistical methods section: Common issues to consider when reading published papers" at the Purdue Department of Animal Science Seminar Series in September 2005. <p><br /> <br /> <br /> Other project related activities:<br /> <br /> George Fernandez served as an associate editor for statistics for American Society for Horticultural Sciences Journal, Hort Science and American Potato Research Journal.<br /> <br /> Bruce Craig developed and taught a new course entitled "Statistical Consulting and Collaboration." The course is a required course for the Applied Master's Degree in Statistics at Purdue University. He used a variety of ideas discussed at NCCC-170 meetings as part of the course materials.<br />

Publications

Aukema, B.H., A.L. Carroll, J. Zhu, K.F. Raffa, T.A. Sickley and S.W. Taylor (2006). Landscape level population dynamics of mountain pine beetle in British Columbia, Canada: Searching for origins and possible mechanisms of the present outbreak. Ecography, 29, 427-441.<br /> <br /> Christman, M. C., D.C. Culver, M.K. Madden and D. White (2005). Patterns of endemism of the Eastern North American cave fauna. Journal of Biogeography, 32, 1441-1452.<br /> <br /> Christman, M. C. and E.N.H. Leone (2006). Statistical aspects of the analysis of group size effects in confined animals. Applied Animal Behavior Science. Corrected proofs available at doi:10.1016/j.applanim.2006.05.020.<br /> <br /> Christman, M. C. and D. Lewis (2005). The spatial distribution of dominant animals within a group: Comparison of four tests. Animal Behaviour, 70, 73-82.<br /> <br /> Ericksena, A., M.S. Gustin, M. Xina, P.J. Weisberga and G.C.J. Fernandez (2006). Airsoil exchange of mercury from background soils in the United States. Science of the Total Environment, 366, 851-863.<br /> <br /> Estevez, I. and M.C. Christman (2006). Analysis of the movement and use of space by animals in confinement. Applied Animal Behavior Science, 97, 221-240.<br /> <br /> Hartle, .R.T, G.C.J. Fernandez and R.S. Nowak (2005). Horizontal and vertical zones of influence for root systems of four Mojave Desert shrubs. Journal of Arid Environments, 64,586-603.<br /> <br /> Ives, A.R. and J. Zhu (2006). Statistics for correlated data: phylogenies, space, and time. Ecological Applications, 16, 20-32.<br /> <br /> Johnson, D., H. Zhang and R. Alldrege (2006). Spatial pattern of verticillium wilt in commercial mint fields. Plant Disease, 90, 789-797.<br /> <br /> Jensen, O. P., M. C. Christman, and T. J. Miller (2006). Landscape-based geostatistics: A case study of the distribution of blue crab in Chesapeake Bay. Environmetrics, 17, 605-621.<br /> <br /> Karlen, D.L., E.G. Hurley, S.S. Andrews, C.A. Cambardella, D.W. Meek, M.D. Duffy, and A.P. Mallarino (2006). Crop rotation effects on soil quality at three northern corn/soybean belt locations. Agronomy Journal, 98, 484-495.<br /> <br /> Kaspar, T.C., T.B. Parkin, D.B. Jaynes, C.A. Cambardella, D.W. Meek, and Y.S. Jung (2006). Examining changes in soil organic carbon with oat and rye cover crops using terrain covariates. Soil Science Society of America Journal,70, 1168-1177.<br /> <br /> Medina, R. F., P. Barbosa, M.C. Christman and A. Battisti (2006). Number of individuals and molecular markers to use in genetic differentiation studies. Molecular Ecology Notes. Corrected proofs available online at doi:10.1111/j.1471-8286.2006.01476.x.<br /> <br /> Meek, D.W., J.H. Prueger, W.P. Kustas, and J.L. Hatfield (2005). Determining meaningful differences for SMACEX eddy covariance measurements. Journal of Hydrometorology, 6(6), 805-811.<br /> <br /> Pascual, J. and H. Zhang (2006). Estimation of linear correlation coefficient of two correlated spatial processes. Sankhya. In press.<br /> <br /> Pipan, T., M.C.Christman and D.C. Culver (2006). Dynamics of epikarstic communities: Microgeographic pattern and environmental determinants of epikarstic copepods in Organ Cave, West Virginia. American Midland Naturalist, 156, 75-87.<br /> <br /> Sauer, T.J., C.A. Cambardella, and D.W.Meek (2006). Spatial variation of soil properties relating to vegetation changes, Plant and Soil, 280, 1-5.<br /> <br /> Smithwick, E.A.H., M.C. Mack, M.G. Turner, F.S. Chapin III, J. Zhu, and T.C. Balser (2005). Spatial heterogeneity of ecosystem processes after severe fire in a black spruce (Picea mariana) forest, Alaska. Biogeochemistry, 76, 517-537. <br /> <br /> Tomer, M.D., D.W. Meek, and L.A. Kramer (2005). Agricultural practices influence flow regimes of headwater streams in Western Iowa. Journal of Environmental Quality, 34, 1547-1558.<br /> <br /> Zhang, H. and D. Zimmerman (2005). Toward reconciling two asymptotic frameworks in spatial statistics. Biometrika, 92, 921-936.<br /> <br /> Zhang, H. (2006). Maximum likelihood estimation for multivariate spatial linear coregionalization models. Environmetrics. In press.<br /> <br /> Zhu, J., H.-C. Huang and C.T. Wu (2005). Modeling spatial-temporal binary data using Markov random fields. Journal of Agricultural, Biological, and Environmental Statistics, 10, 212-225. <br /> <br /> Zhu, Z. and H. Zhang (2006). Spatial sampling design under the infill asymptotic framework. Environmetrics, 17, 323-337.<br />

Impact Statements

1. In addition to group outputs such as workshops, the project serves as a resource for its members and a sounding board for new ideas in their applied statistical research. As a result, all members are able to provide more effective assistance to agricultural researchers addressing national research priorities than they would without NCR-170.
2. The spatial workshop developed by project members has been presented twice to subject matter audiences, once in conjuction with the Conference on Applied Statistics in Agriculture at Kansas State University and in July 2006 at the joint annual meeting of the American Phytopathological Society, the Canadian Phytopathological Society and the Mycological Society of America.
3. USDA-ARS statisticans at Beltsville organized and co-hosted a two day spatial statistics workshop with USGS and the U.S. Fish and Wildlife Service in March 2006. The impetus for the workshop came in part from the interaction between NCCC-170 and the ARS statisticians, some of whom are project members. In addition, presentations were made by four project members at the workshop.

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