Anolis roosevelti

Number of Pages: 2Integrative BiologyGeological Science

Erosion Control in Ohio Farming

PDF pages: 4

Scaling up from greenhouse resistance to fitness in the field for a host of an emerging forest disease.

Forest systems are increasingly threatened by emergent, exotic diseases, yet management strategies for forest trees may be hindered by long generation times and scant background knowledge. We tested whether nursery disease resistance and growth traits have predictive value for the conservation of Notholithocarpus densiflorus, the host most susceptible to sudden oak death. We established three experimental populations to assess nursery growth and resistance to Phytophthora ramorum, and correlations between nursery-derived breeding values with seedling survival in a field disease trial. Estimates of nursery traits' heritability were low to moderate, with lowest estimates for resistance traits. Within the field trial, survival likelihood was increased in larger seedlings and decreased with the development of disease symptoms. The seed-parent family wide likelihood of survival was likewise correlated with family predictors for size and resistance to disease in 2nd year laboratory assays, though not resistance in 1st year leaf assays. We identified traits and seedling families with increased survivorship in planted tanoaks, and a framework to further identify seed parents favored for restoration. The additive genetic variation and seedling disease dynamics we describe hold promise to refine current disease models and expand the understanding of evolutionary dynamics of emergent infectious diseases in highly susceptible hosts

Optimalization by peak-holding

The problem presented is a study of the peak-holding method of optimalization. This method applies to a system that has an extremum. After describing how the complete system, consisting of the controller and the controlled system, works; variations in the controller are presented. These variations are changes in the final stage of the controller, the servo. A phase-plane analysis shows how the output of the controlled system varies with its rate of change. Limitations are presented which tell why the system cannot be kept at its peak value at all times. Finally an analog simulation is used to study the system and verify the theoretical results --Abstract, page ii

The Work of the Second Hague Conference

The second Hague Conference came to an end on October 18, 1907, after sitting for more than four months. In the popular mind the Conference has been dismissed as a failure. No sensational actions were taken, and the quiet and solid work of a group of international lawyers has had little attraction for the general public. It is, however, worth while to make a plain statement of what the Conference did and did not accomplish. The first Hague Conference in 1899 was essentially a peace conference. The question of partial disarmament was put at the head of the Russian program for that meeting and when no scheme embodying this proposal received favorable consideration, the conference was called a failure. But after eight years we know that it was not a failure, and that it will rank as one of the most important meetings in the world\u27s history

A Technical Guide to C-SIDE (Software for Intake Distribution Estimation). Dietary Assessment Research Series Report 9

The computer software package C-SIDE estimates usual intake distributions for nutrients and foods using statistical methodology developed at lows State University. An accompanying user\u27s guide explains how to use C-SIDE to obtain estimates of usual intake distributions. This technical manual provides a detailed description of the statistical methodology itself, and is the first document to fully describe every step of the method

The Recall and the Political Responsibility of Judges

The movement for the recall of State officers is one which has became important only within the past three or four years. The first application of the recall as a modem institution in the United States appears to have been in Los Angeles in 19o3, where the institution was adopted in the amendment of the charter framed by that city. From Los Angeles the recall as applicable only to municipal officers spread to other California cities, and has now been rather widely adopted in other States. The first State constitutional amendment with respect to the recall, that of California in 1906, provided that municipal charters should control with respect to the tenure of office or dismissal from office of municipal officers or employees. The first State-wide provision for a recall of public officers was that inserted into the constitution of Oregon by an amendment adopted on June I, 1908. A proposal in substantially the same terms af the Oregon provision was incorporated into the proposed constitution of Arizona, which was approved by a vote of the people of that territory on February 9, 1911, and a somewhat similar provision was adopted as a constitutional amendment by a vote of the people of California on October 1O, 1911

How to protect a wind turbine from lightning

Techniques for reducing the chances of lightning damage to wind turbines are discussed. The methods of providing a ground for a lightning strike are discussed. Then details are given on ways to protect electronic systems, generating and power equipment, blades, and mechanical components from direct and nearby lightning strikes

User Needs, Benefits, and Integration of Robotic Systems in a Space Station Laboratory

The methodology, results and conclusions of all tasks of the User Needs, Benefits, and Integration Study (UNBIS) of Robotic Systems in a Space Station Laboratory are summarized. Study goals included the determination of user requirements for robotics within the Space Station, United States Laboratory. In Task 1, three experiments were selected to determine user needs and to allow detailed investigation of microgravity requirements. In Task 2, a NASTRAN analysis of Space Station response to robotic disturbances, and acceleration measurement of a standard industrial robot (Intelledex Model 660) resulted in selection of two ranges of microgravity manipulation: Level 1 (10-3 to 10-5 G at greater than 1 Hz) and Level 2 (less than equal 10-6 G at 0.1 Hz). This task included an evaluation of microstepping methods for controlling stepper motors and concluded that an industrial robot actuator can perform milli-G motion without modification. Relative merits of end-effectors and manipulators were studied in Task 3 in order to determine their ability to perform a range of tasks related to the three microgravity experiments. An Effectivity Rating was established for evaluating these robotic system capabilities. Preliminary interface requirements for an orbital flight demonstration were determined in Task 4. Task 5 assessed the impact of robotics