Aerospace Medicine and Biology: A continuing supplement 180, May 1978

This special bibliography lists 201 reports, articles, and other documents introduced into the NASA scientific and technical information system in April 1978

Aerospace Medicine and Biology: A continuing bibliography with indexes, supplement 182, July 1978

This bibliography lists 165 reports, articles, and other documents introduced into the NASA scientific and technical information system in June 1978

Aeronautical Engineering: A continuing bibliography, supplement 120

This bibliography contains abstracts for 297 reports, articles, and other documents introduced into the NASA scientific and technical information system in February 1980

Aeronautical engineering: A continuing bibliography with indexes (supplement 289)

This bibliography lists 792 reports, articles, and other documents introduced into the NASA scientific and technical information system in Mar. 1993. Subject coverage includes: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment, and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics

Aeronautical engineering: A continuing bibliography with indexes (supplement 306)

This bibliography lists 181 reports, articles, and other documents recently introduced into the NASA STI Database. Subject coverage includes the following: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment, and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics

PROGRAM REVIEW 1993: Self Study Report Department of Biometry

The CSRS review team applauds the statistical expertise of the Biometry Department which began as the statistical Laboratory in 1957 and culminated with the current academic Department of Biometry. This enhancement has been highlighted by a significant increase in the number of faculty and staff, the initiation of a Master of Science program, and the provision of graduate assistant stipends. With the presence of seven faculty, the imminent increase from seven to fifteen graduate students, the establishment of statistical consulting with numerous IANR faculty, and the diverse research and teaching expertise of the faculty, the department is poised to provide greater service to the University. Future goals may include: (1) establishment of a statistical department worthy of national recognition by joining the faculties of the Department of Biometry and the Division of statistics from the Department of Mathematics and Statistics, and (2) the formation of a PhD program in Statistics that encompasses biometry and theoretical statistics. It is apparent that the faculty is capable of conducting statistical research of a more theoretical nature. However, securing research grants as principal investigators or as co-investigators with other UNL faculty is required to fully support those research endeavors. With successful grant activity a greater portion of research results should be published in statistical journals. Based on discussions, consultations on experimental design and data analysis are appropriate and much appreciated by IANR faculty. While personal consultations have been highly beneficial, the initiation of a Help Desk provides rapid and accurate response to straightforward statistical questions; thereby relieving the Biometry faculty for personal ·consultation on more complex statistical issues. The help desk provides valuable and real world training for graduate students. Courses taught as a service to undergraduate and graduate IANR students appear to be appropriate in number and content. With a master\u27s program successfully started, more formal policies for recruitment, selection, advising, and placement should be initiated. Further attention is required to provide space, computers, and advisers for graduate students. Faculty expressed an appreciation for the strong support provided to Biometry by the administration from the Head, Deans, and Vice Chancellor. The team however, notes several management concerns including: the lack of faculty meetings; inadequate communications among Head, faculty, and graduate students; the need for continual curriculum improvement; and the lack of sufficient office and laboratory space. Concern is also raised about the potential over-commitment to international consulting at the expense of performing departmental functions. The team is reluctant to recommend the immediate initiation of a PhD program in the Biometry Department. Establishment of a successful master\u27s program before pursuing the doctoral program appears prudent. The merger of the two UNL statistical groups into one department would position UNL for a strong PhD program

Fir (Abies spp.) stand biomass additive model for Eurasia sensitive to winter temperature and annual precipitation

Climate change, especially modified courses of temperature and precipitation, has a significant impact on forest functioning and productivity. Moreover, some alterations in tree biomass allocation (e.g. root to shoot ratio, foliage to wood parts) might be expected in these changing ecological conditions. Therefore, we attempted to model fir stand biomass (t ha(-1)) along the trans-Eurasian hydrothermal gradients using the data from 272 forest stands. The model outputs suggested that all biomass components, except for the crown mass, change in a common pattern, but in different ratios. Specifically, in the range of mean January temperature and precipitation of -30 degrees C to +10 degrees C and 300 to 900 mm, fir stand biomass increases with both increasing temperature and precipitation. Under an assumed increase of January temperature by 1 degrees C, biomass of roots and of all components of the aboveground biomass of fir stands increased (under the assumption that the precipitation level did not change). Similarly, an assumed increase in precipitation by 100 mm resulted in the increased biomass of roots and of all aboveground components. We conclude that fir seems to be a perspective taxon from the point of its productive properties in the ongoing process of climate change.This paper was prepared within the programs of the current scientific research of the Ural Forest Engineering University and Botanical Garden of the Ural Branch of Russian Academy of Sciences. This work was supported by grant "EVA4.0", No. CZ.02.1.01/0.0/0.0/16_019/0000803 financed by OP RDE, by the Slovak Research and Development Agency under contracts No. APVV-15-0265, APVV-16-0325, APVV-18-0086 and the Scientific Grant Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic under contracts No. VEGA 1/0367/16

Weak second order explicit exponential Runge-Kutta methods for stochastic differential equations

We propose new explicit exponential Runge-Kutta methods for the weak approximation of solutions of stiff Itô stochastic differential equations (SDEs). We also consider the use of exponential Runge-Kutta methods in combination with splitting methods. These methods have weak order 2 for multidimensional, noncommutative SDEs with a semilinear drift term, whereas they are of order 2 or 3 for semilinear ordinary differential equations. These methods are A-stable in the mean square sense for a scalar linear test equation whose drift and diffusion terms have complex coefficients. We carry out numerical experiments to compare the performance of these methods with an existing explicit stabilized method of weak order 2