The High Speed Water Tunnel three-component balance

An experimental program was initiated in the High Speed Water Tunnel to measure force coefficients for hydrofoils under cavitating conditions. This program necessitated either a new force balance or a major modification of the existing one. Various balance configurations and pressure seal designs which were considered are described. A balance modification design was selected which consists of an appendage bolted between the existing balance and the water tunnel working section. This appendage alters the basic geometry of the force balance so that the model is now mounted on a parallelogram linkage instead of on a simple pivoted lever. The addition of the parallelogram force table suspension to the old balance renders the modified balance unresponsive to moments which in the old balance, interacted with forces and resulted in errors in the force readings. This modification which is described in detail was accomplished and resulted in a successful force balance capable of accurate measurement of forces on cavitating and noncavitating hydrofoils; and, in fact, it is expected to replace the old force balance for all force measurement work in the High Speed Water Tunnel. The cost and construction time for the balance modification were considerably less than would have been required for an entirely new force balance of comparable accuracy and sensitivity

Increasing Productivity and Reducing Costs Is a Vital Alternative to Raising Taxes or Cutting or Eliminating Services in Local Governments

In local government across the United States, public officials, both elected and appointed, a retelling the tax payers that there are two alternatives in solving the problem of increasing costs that confront government. These alternatives are to increase taxes or to cut back or eliminate services. This paper examines vital alternatives by which local government can reduce the costs of services and increase efficiency and effectiveness of these services through productivity improvements rather than by increasing taxes or reducing or eliminating services and programs. Productivity will be defined. Productivity improvement techniques will be outlined. Also, barriers that hinder the implementation of a productivity improvement program will be discussed. The paper then provides an overview of productivity improvement programs in five units of local government. Finally, a case study is presented outlining how productivity was increased and resulted in a substantial cost reduction in the County Clerk's Department of Genesee County, Michigan. The paper concludes by indicating that the research data collected and analyzed supports the hypothesis outlined in the paper. Furthermore, the 80's will be a period of cut-back management and program entrenchment in local government due to the scarcity of resources to finance these programs and services. Therefore, the public official will be forced to turn to improvements in productivity in order to resolve the above crisis.Master of Public AdministrationPublic AdministrationUniversity of Michigan-Flinthttps://deepblue.lib.umich.edu/bitstream/2027.42/143475/1/McGraw.pd

Alien Registration- Mcgraw, Leonard G. (Eastport, Washington County)

https://digitalmaine.com/alien_docs/1399/thumbnail.jp

Relationship between Allan variances and Kalman Filter parameters

A relationship was constructed between the Allan variance parameters (H sub z, H sub 1, H sub 0, H sub -1 and H sub -2) and a Kalman Filter model that would be used to estimate and predict clock phase, frequency and frequency drift. To start with the meaning of those Allan Variance parameters and how they are arrived at for a given frequency source is reviewed. Although a subset of these parameters is arrived at by measuring phase as a function of time rather than as a spectral density, they all represent phase noise spectral density coefficients, though not necessarily that of a rational spectral density. The phase noise spectral density is then transformed into a time domain covariance model which can then be used to derive the Kalman Filter model parameters. Simulation results of that covariance model are presented and compared to clock uncertainties predicted by Allan variance parameters. A two state Kalman Filter model is then derived and the significance of each state is explained

Archeological Testing within the Right-of-Way of FM 1929, at Site 41CN218, Coleman County, and in the Vicinity of Site Complex 41CC48/49/50/51 and Site 41CC52, and Site 41CC246, Concho County, Texas

The State Department of Highways and Public Transportation (SDHPT) conducted archaeological testing within the right-of-way of FM 1929 at site 41CN218 in Coleman County, and in the vicinity of site complex 41CC48/49/50/51 and 41CC52 in Concho County. Intensive surface survey and mapping was also undertaken at site 41CC246 in Concho County. This report details the work undertaken, and summarizes the cultural sequence of the area. Excavations at site 41CN218 did not reveal any evidence of discrete cultural stratigraphy. Rather it appeared that artifacts were scattered throughout an upper brownish soil horizon, which in places reached depths of about 2 meters. The only feature tentatively recognized consisted of a limestone hearth. This was not associated with any diagnostic artifacts, identifiable cultural living surface, or any ash or charcoal. None of the artifacts recovered from the excavations were temporally or culturally diagnostic. For the most part, artifacts consisted of lithic debitage, with a few utilized flakes, one uniface, and two very small biface fragments. The nature of the debitage suggests that lithic activities were largely confined to final tool manufacture, at least within that part of the site tested. The utilized flakes suggest that scraping, cutting, and perhaps graving or piercing activities took place on the site. Fauhal remains consisted of a few small fragments of fossilized bone which could not be directly associated with cultural remains, and highly weathered fragments of mussel shell. The nature of the recovered remains is not conducive to the identification of specific activity areas, or other horizontal cultural patterning. Gross artifact counts indicate a higher density of artifacts along the western margin of the right-of-way. However, it was obvious from surface inspection of the area that the right-of-way crossed the eastern margin of the site, and that artifacts appeared with considerably greater frequency to the west of the right-of-way. On the basis of the excavations conducted, it is believed that those portions of the site within the highway right-of-way are not worthy of designation as a State Archeological Landmark. Excavations within the FM 1929 right-of-way in the vicinity of site complex 41CC48/49/50/51 and site 41CC52 failed to reveal any buried cultural materials, cultural features, or other evidence of buried cultural strata. Surface examination revealed a few scattered non-diagnostic cultural artifacts, but all were in plow-disturbed deposits. It is, therefore, believed that those portions of the sites within the highway right-of-way are not worthy of designation as a State Archeological Landmark. Survey within the FM 1929 right-of-way at site 41CC246 revealed that the area was extremely eroded. Although the investigations were primarily concerned with the historic component, scattered prehistoric lithic debitage, none diagnostic, was observed on the surface. This sparse scatter extended into site 41CC52, with no apparent discontinuity. Site mapping indicated that the concentration of rock and rubble associated with a house foundation was essentially outside the right-of- way, as was the accompanying sheet scatter of historic artifacts. Given the eroded nature of the area, the lack of intact features within the right-of-way, and previous impacts, it is believed that those portions of the site within the highway right-of-way are not worthy of designation as a State Archeological Landmark

Healing of Periodontal Flaps Following Use of MBR 4197 (Flucrylate) in Rhesus Monkeys: A Biometric and Histometric Evaluation

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141198/1/jper0305.pd

Bistable Gradient Networks II: Storage Capacity and Behaviour Near Saturation

We examine numerically the storage capacity and the behaviour near saturation of an attractor neural network consisting of bistable elements with an adjustable coupling strength, the Bistable Gradient Network (BGN). For strong coupling, we find evidence of a first-order "memory blackout" phase transition as in the Hopfield network. For weak coupling, on the other hand, there is no evidence of such a transition and memorized patterns can be stable even at high levels of loading. The enhanced storage capacity comes, however, at the cost of imperfect retrieval of the patterns from corrupted versions.Comment: 15 pages, 12 eps figures. Submitted to Phys. Rev. E. Sequel to cond-mat/020356

The Amateur Sky Survey Mark III Project

The Amateur Sky Survey (TASS) is a loose confederation of amateur and professional astronomers. We describe the design and construction of our Mark III system, a set of wide-field drift-scan CCD cameras which monitor the celestial equator down to thirteenth magnitude in several passbands. We explain the methods by which images are gathered, processed, and reduced into lists of stellar positions and magnitudes. Over the period October, 1996, to November, 1998, we compiled a large database of photometric measurements. One of our results is the "tenxcat" catalog, which contains measurements on the standard Johnson-Cousins system for 367,241 stars; it contains links to the light curves of these stars as well.Comment: 20 pages, including 4 figures; additional JPEG files for Figures 1, 2. Submitted to PAS

HAVOSS: A Maturity Model for Handling Vulnerabilities in Third Party OSS Components

Security has been recognized as a leading barrier for IoT adoption. The growing number of connected devices and reported software vulnerabilities increases the importance firmware updates. Maturity models for software security do include parts of this, but are lacking in several aspects. This paper presents and evaluates a maturity model (HAVOSS) for handling vulnerabilities in third party OSS and COTS components. The maturity model was designed by first reviewing industry interviews, current best practice guidelines and other maturity models. After that, the practices were refined through industry interviews, resulting in six capability areas covering in total 21 practices. These were then evaluated based on their importance according to industry experts. It is shown that the practices are seen as highly important, indicating that the model can be seen as a valuable tool when assessing strengths and weaknesses in an organization's ability to handle firmware updates

The CCD/Transit Instrument (CTI) data-analysis system

The automated software system for archiving, analyzing, and interrogating data from the CCD/Transit Instrument (CTI) is described. The CTI collects up to 450 Mbytes of image-data each clear night in the form of a narrow strip of sky observed in two colors. The large data-volumes and the scientific aims of the project make it imperative that the data are analyzed within the 24-hour period following the observations. To this end a fully automatic and self evaluating software system has been developed. The data are collected from the telescope in real-time and then transported to Tucson for analysis. Verification is performed by visual inspection of random subsets of the data and obvious cosmic rays are detected and removed before permanent archival is made to the optical disc. The analysis phase is performed by a pair of linked algorithms, one operating on the absolute pixel-values and the other on the spatial derivative of the data. In this way both isolated and merged images are reliably detected in a single pass. In order to isolate the latter algorithm from the effects of noise spikes a 3x3 Hanning filter is applied to the raw data before the analysis is run. The algorithms reduce the input pixel-data to a database of measured parameters for each image which has been found. A contrast filter is applied in order to assign a detection-probability to each image and then x-y calibration and intensity calibration are performed using known reference stars in the strip. These are added to as necessary by secondary standards boot-strapped from the CTI data itself. The final stages involve merging the new data into the CTI Master-list and History-list and the automatic comparison of each new detection with a set of pre-defined templates in parameter-space to find interesting objects such as supernovae, quasars and variable stars. Each stage of the processing from verification to interesting image selection is performed under a data-logging system which both controls the pipe-lining of data through the system and records key performance monitor parameters which are built into the software. Furthermore, the data from each stage are stored in databases to facilitate evaluation, and all stages offer the facility to enter keyword-indexed free-format text into the data-logging system. In this way a large measure of certification is built into the system to provide the necessary confidence in the end results