Dynamic Geotechnical Comparative Testing Capability

A concept and preliminary design are presented for a special testing capability to be added to an existing large laboratory geotechnical testing chamber. The modified chamber is intended to allow, through comparative testing, the reasonably rigorous evaluation of methods for providing detailed information, for soil deposits, on in situ undegraded nonlinear inelastic shear stress vs strain characteristics needed for dynamic geotechnical earthquake engineering analyses. Basically, the added capability is to be a large resonant column-like torsional testing system that tests the entire chamber sample and allows access to the center of the sample for the testing of the method to be evaluated. The main features of the modified test chamber are meant to be that 1) tests of methods to be evaluated and comparative tests are to be conducted on the same sample and 2) the comparative testing method is to provide the information of interest

In Situ Torsional Cylindrical Shear Test-Laboratory Results

We present results from cyclic tests conducted in the laboratory using a prototype in situ cyclic torsional cylindrical shear geotechnical testing system. The system is intended to advance our ability to design critical systems to resist earthquakes by improving our ability to analytically predict the behavior of soil-structure-equipment systems during earthquakes. It is to do so by providing, more reliably than we feel is now possible, estimates of the in situ cyclic shear stress vs strain characteristics needed by refined earthquake analyses. These characteristics include 1) resistances to initial liquefaction, cyclic degradation, and large cyclic deformations, and 2) undegraded, nonlinear, inelastic characteristics. The testing system was found to be effective under representative controlled laboratory conditions and promising for field use. Test results were found to be reasonable and consistent with published results of laboratory tests of a high quality. Additionally, we did not observe major limitations or encounter abnormal difficulties

A rule-based functional-structural model of rice considering source and sink functions

As a first step towards a generic genotype-phenotype model of rice, we present here a model of the growth and morphology of rice in combination with ecophysiological processes using the technique of functional-structural plant modelling (FSPM) and the interactive modelling platform GroIMP along with the graph-based Relational Growth Grammar formalism. The model constitutes a simple yet functionally coherent phenotype model of rice, consisting of a set of morphogenetic RGG rules describing an “average” developmental course and final morphology, partially linking yield traits to processes (tiller and grain number, stem length, grain filling rate, grain weight)

FSPM-P: towards a general functional-structural plant model for robust and comprehensive model development

In the last decade, functional-structural plant modelling (FSPM) has become a more widely accepted paradigm in crop and tree production, as 3D models for the most important crops have been proposed. Given the wider portfolio of available models, it is now appropriate to enter the next level in FSPM development, by introducing more efficient methods for model development. This includes the consideration of model reuse (by modularisation), combination and comparison, and the enhancement of existing models. To facilitate this process, standards for design and communication need to be defined and established. We present a first step towards an efficient and general, i.e., not speciesspecific FSPM, presently restricted to annual or bi-annual plants, but with the potential for extension and further generalization. Model structure is hierarchical and object-oriented, with plant organs being the base-level objects and plant individual and canopy the higher-level objects. Modules for the majority of physiological processes are incorporated, more than in other platforms that have a similar aim (e.g., photosynthesis, organ formation and growth). Simulation runs with several general parameter sets adopted from the literature show that the present prototypewas able to reproduce a plausible output range for different crops (rapeseed, barley, etc.) in terms of both the dynamics and final values (at harvest time) of model state variables such as assimilate production, organ biomass, leaf area and architecture

Speech Communication

Contains three reports on research facilities and systems.U. S. Air Force Cambridge Research Laboratories, Office of Aerospace Research, under Contract F19628-69-C-0044National Institutes of Health (Grant 2 ROl NB-04332-06

Speech Communication

Contains reports on three research projects.U.S. Air Force Cambridge Research Laboratories under Contract F19628-72-C-0181National Institutes of Health (Grant 5 RO1 NS04332-09)Joint Services Electronics Programs (U.S. Army, U. S. Navy, and U. S. Air Force) under Contract DAAB07-71-C-0300M. I. T. Lincoln Laboratory Purchase Order CC-57

Law Library Consortium Data Base Components and Standards Study Group Report

The Data Base Components and Standards Committee of the Law Library Consortium recommends the establishment of a national law data base to meet the multi-faceted needs of the legal community for legal and law-related information. The scope of the Report includes bibliographic description and control, as well as subject and full-text access to Anglo-American, foreign, comparative, and international law materials in monographs, serials, non-book media including audio-visual and computerized information, computerassisted instruction, confidential data control and resource persons. Standardsf or inputting information are suggested

Law Library Consortium Data Base Components and Standards Study Group Report

The Data Base Components and Standards Committee of the Law Library Consortium recommends the establishment of a national law data base to meet the multi-faceted needs of the legal community for legal and law-related information. The scope of the Report includes bibliographic description and control, as well as subject and full-text access to Anglo-American, foreign, comparative, and international law materials in monographs, serials, non-book media including audio-visual and computerized information, computerassisted instruction, confidential data control and resource persons. Standardsf or inputting information are suggested