This software tool automates the statistical analysis of heating indicators for a family of trajectories. It allows for quick and clear relative comparison of the trajectories by concisely and meaningfully reducing an arbitrarily large set of body point heating into single values that are used to rank the trajectories. This software is user friendly, and enables other engineers to easily perform analysis. PFlASH post-processes the XF0002 Dump7 files or QLIST to calculate heating indicators and statistics on the heating indicators. PFlASH automatically generates Matlab.m files to produce presentation-quality plots that are ready to be inserted into briefings or collated into a pdf.

Formation of Quantitative and Age Structure of Tractor Park in the Conditions of Limitation of Resources of Agricultural Production

2015-26-014701/14/2015

A feature of the present state of the Russian agricultural industry is that productive resources (tractor pool, arable land area and number of workers involved) are diminishing and the reduction does not have a quantified value. In the prevailing conditions of limited resources, agricultural enterprises are forced to operate tractors beyond their amortization periods on a massive scale, which results in an unpredictable service life. This situation calls for an assessment of the optimal composition of the tractor pool in terms of number and age. By way of a solution to this problem, the given article presents a methodological approach as to the analysis of two opposing factors. On the one hand, it takes into account the fact that the use of tractors beyond their depreciation periods leads to increased costs of their operation and further yield losses related to the poor technical condition factor, which is proportional to the number of tractors with expired depreciation periods. On the

Shevtsov, Vladimir, Lavrov, Alexandr, Izmailov, Andrei, lobachevskii, Yakov

Comparison of In-Cylinder Pressure Measurement Methods in a Small Spark Ignition Engine

2014-32-000711/11/2014

In this work, in-cylinder pressure was measured in a 55 cc single cylinder, 4.4 kW, two stroke, spark ignition engine. In cylinder pressure measurements were taken using two different pressure transducers to determine if the performance differences between the two transducers are discernible in a small, spark ignition engine. A Kistler brand measuring spark plug was compared to a Kistler brand flush mount high temperature pressure sensor. Both sensors employ piezo-electric pressure sensing elements and were designed to measure indicated mean effective pressure as well as to detect knock at high temperature engine conditions. The pressure sensors were installed and adjusted to ensure cylinder volume after sensor installation matched the engine's original configuration within reasonable manufacturing tolerances. A series of tests at four throttle settings ensued to determine if either device altered the combustion volume or the engine's performance. Performance measurements were obtained

Ausserer, Joseph K., Rowton, Alexander K., Grinstead, Keith D., Litke, Paul J., Polanka, Marc D.

Detecting High Stress in Oral Interviews and Text Documents

TBMG-20938

11/01/2014

When a person is interviewed, some of the answers may be inaccurate, or even deceptive, because the person may have either incomplete information, is telling only part of the truth, or is fabricating a false answer, or a combination of all three. When the person is habitually making statements that are known to be false, or only partly true, emotional and/or intellectual conflicts often arise within them, and these conflicts may become manifest by inconsistencies in use of different parts of speech or in logical relationships between statements. These inconsistencies are more subtle than inconsistencies in factual statements, and identification of these inconsistencies is more difficult and less straightforward than identification of factual inconsistencies.

Powder Handling Device for Analytical Instruments

TBMG-20714

10/01/2014

A new technology provides for automated sample handling and movement of coarse-grained powder or other solid materials to enable analysis by a robotic or totally automated computer system. Currently, many analytical instruments require a powder sample to control the shape and/or volume of the specimen, to increase the surface area of the specimen, to increase the statistical representation of a specimen when samples are not homogeneous with regard to the characterized property, and/or to increase the statistical representation of the specimen spatial orientation when the properties being characterized are not equivalent in different viewing directions. Grinding the material down to an ideal grain size is sometimes impossible, and conditioning the sample for analysis is often time-consuming and labor-intensive. In the new approach, the powder is handled as a fluid, using mechanical vibrations in conjunction with a driving force (gravity or gas flow), and requiring few or no moving parts

Items per page:

1 – 50 of 423