The purpose of the work resulting in this report is to develop a mechanically enhanced breaking bar, or prying bar, for bringing down trees. There was already a prototype to study, which was assembled by welded steel components. A specification of demands took form after continuous technical discussions with the inventor, assignee and mentors. When an analysis of this device and its function was made, the work continued with calculations to establish the foundation to design a mechanical model. Geometrical relationships were established to design the sub-components of the breaking bar and its functions. Simulations regarding material strength and mechanical function were made by the use of different modules in the CAD-software Solid Works and led to a simplified version of the breaking bar. The new simplified version was accepted by the inventor and the drawings for the new tool could now be made. During the time of this work the inventor has prepared his patent request and therefore this work has been classified and considered under secrecy for the inner circle persons containing the Kogertek-employees. The breaking bar which was produced with its powerful gear ratio is amplifying the force from the handle by a factor 25 and lifts 50 mm in the felling cut of the tree. In theory the tool would weigh approximately 1800 grams and can be used to bring down a tree with a diameter of at most 40 cm. Drawings for the constituent components were sent to a workshop to be manufactured and a mechanical breaking bar was assembled and tested.

We study the ∂-Neumann operator and the Kobayashi metric. We observe that under certain conditions, a higher-dimensional domain fibered over Ω can inherit noncompactness of the d-bar-Neumann operator from the base domain Ω. Thus we have a domain which has noncompact d-bar-Neumann operator but does not necessarily have the standard conditions which usually are satisfied with noncompact d-bar-Neumann operator. We define the property K which is related to the Kobayashi metric and gives information about holomorphic structure of fat subdomains. We find an equivalence between compactness of the d-bar-Neumann operator and the property K in any convex domain. We also find a local property of the Kobayashi metric [Theorem IV.1], in which the domain is not necessary pseudoconvex. We find a more general condition than finite type for the local regularity of the d-bar-Neumann operator with the vector-field method. By this generalization, it is possible for an analytic disk to be on the part of boundary where we have local regularity of the d-bar-Neumann operator. By Theorem V.2, we show that an isolated infinite-type point in the boundary of the domain is not an obstruction for the local regularity of the d-bar-Neumann operator.

Darbe lyginamos dvi objektų identifikavimo sistemos: BAR kodas ir radijo dažniu pagrįsta RFID. Šiame darbe stengiamasi objektyviai įvertinti abiejų technologijų privalumus bei trūkumus, apžvelgti jų panaudojimo sritis. Pagrindinis dėmesys skiriamas logistikai, kur lig šiol plačiai naudojama BAR kodas, bet jau dabar yra galimybės sėkmingai jį pakeisti naująja RFID ir taip padidinti verslo rentabilumą. / In this article two objects identification technologies are analyzed, that’s BAR code and Radio Frequency Identification. Author of this article seeks to evaluate employment nuances of both technologies. Main attention was paid to logistic, where BAR code is still widely in use. Lot of specialist talk that there are already possibility to replace BAR with RFID and increase profitableness of business.

A survey is made of analytic, experimental and numerical techniques in the field of the dynamic initiation, and early propagation, of cracks. As no closed form analytic solutions exist for finite geometries, even in the elastic case, numerical and experimental techniques have to be developed. In instrumented impact tests plasticity often occurs. The specific problem of the Instrumented Charpy Test is discussed in detail by virtue of its technological significance and the extensive literature available for the test. Although a standard for the test has been proposed there are still outstanding questions to be answered, for which the techniques described above can be used. The problem of the dynamic calibration of various notched geometries is addressed in the original work of the thesis. The Charpy, Izod, Slender Cantilever and Double Notched Bar geometries are studied using dynamic photoelasticity and 8000 fps photography. It is shown that the response of the DNB is more straightforward than the Charpy geometry. Further photoelastic study of the latter two geometries, using epoxy model material and 10⁶ fps photography, gives a quantitative measure of the growth of stress intensity factor at the notch tips and hence a dynamic calibration is deduced. An explicit finite difference code is used to supplement photoelastic data. Having achieved progress in the derivation of the dynamic calibration of the two selected geometries, corresponding instrumented impact tests are then undertaken. The Hopkinson Pressure Bar method of loading is used. It is concluded that the proposed standard for the Instrumented Charpy Test is valid within limits but that there is a requirement for a dynamic calibration. Such a calibration is complex in the case of the Charpy geometry whereas a simpler geometry, viz. DNB, could prove to be more amenable to analysis and hence be more practical from the technological point of view.

Over 95% of imports entering the United States from outside North America arrive via cargo containers by sea at 329 ports of entry. The current layered approach for the detection only scans 5% of cargo bound for the United States. This is inadequate to protect our country. This research involved the building of a gamma-ray radiation detection system used for cargo scanning. The system was mounted on a spreader bar crane (SBC) at the Port of Tacoma (PoT) and the applicability and capabilities of the system were analyzed. The detection system provided continuous count rate and spectroscopic data among three detectors while operating in an extreme environment. In a separate set of experiments, 60Co and 137Cs sources were positioned inside a cargo container and data were recorded for several count times. The Monte Carlo N-Particle (MCNP) code was used to simulate a radioactive source inside an empty cargo container and the results were compared to experimentally recorded data. The detection system demonstrated the ability to detect 60Co, 137Cs, 192Ir, highly-enriched uranium (HEU), and weapons-grade plutonium (WGPu) with minimum detectable activities (MDA) of 5.9 ± 0.4 microcuries (μCi), 19.3 ± 1.1 μCi, 11.7 ± 0.6 μCi, 3.5 ± 0.3 kilograms (kg), and 30.6 ± 1.3 grams (g), respectively. This system proved strong gamma-ray detection capabilities, but was limited in the detection of fissile materials Additional details of this system are presented and advantages of this approach to cargo scanning over current approaches are discussed.

Vehicle anti-roll bars are suspension components used for limiting body roll angle. They have a direct effect on the handling characteristics of the vehicle. Design changes of anti-roll bars are quite common at various steps of vehicle production, and a design analysis must be performed for each change. Finite Element Analysis (FEA) can be effectively used in design analysis of anti-roll bars. However, due to high number of repeated design analyses, the analysis time and cost problems associated with the use of general FEA package programs may create considerable disadvantages in using these package programs for performing anti-roll bar design analysis. In this study, an automated design program is developed for performing design analysis of vehicle anti-roll bars. The program is composed of two parts, the user interface and the FEA macro. The FEA macro includes the codes for performing deformation, stress, fatigue, and modal analysis of anti-roll bars in ANSYS 7.0. The user interface, which is composed in Visual Basic 6.0, includes the forms for data input and result output procedures. By the developed software, the FEA of the anti-roll bars is simplified to simple data entry via user interface. The flow of the analysis is controlled by the program and the finite element analysis is performed by ANSYS at the background. The developed software can perform design analysis for a wide range of anti-roll bars: The bar centerline can have any 3D shape, the cross section can be solid or hollow circular, the end connections can be of pin or spherical joint type, the bushings can be mounted at any position on the bar with a user defined bushing length. The effects of anti-roll bar design parameters on final anti-roll bar properties are also evaluated by performing sample analyses with the automated design program developed in this study.

Thesis--University of Chicago, 1915. / "Private edition." "Reprinted from the American Journal of Semitic Languages and Literatures, vol. XXXII, No. 3, April, 1916." "The text of Antonius Rhetor's treatise on Syriac prosody [the fifth book of his Rhetoric] as found in H" (Reproduced from Harvard ms. Semetic museum no. 4057) : p. 176-195. Appendix I. (English translation of Bardaisan's 55th hymn against heresies) : p. 196-202. Appendix II. (Collation of the Harvard ms., Semitic museum no. 4049, containing the first three books of the Dialogues of Severus of Mar Mattai (bar Shakko)) : p. 203-216.

Thesis--University of Chicago, 1915. / "Private edition." "Reprinted from the American Journal of Semitic Languages and Literatures, vol. XXXII, No. 3, April, 1916." "The text of Antonius Rhetor's treatise on Syriac prosody [the fifth book of his Rhetoric] as found in H" (Reproduced from Harvard ms. Semetic museum no. 4057) : p. 176-195. Appendix I. (English translation of Bardaisan's 55th hymn against heresies) : p. 196-202. Appendix II. (Collation of the Harvard ms., Semitic museum no. 4049, containing the first three books of the Dialogues of Severus of Mar Mattai (bar Shakko)) : p. 203-216.

Thesis (M.S.)--University of Wisconsin--Madison, 1970. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.) University of Missouri-Columbia, 2006. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on August 23, 2007) Includes bibliographical references.