A multi-INT semantic reasoning framework for intelligence analysis support

Lockheed Martin Corp. has funded research to generate a framework and methodology for developing semantic reasoning applications to support the discipline oflntelligence Analysis. This chapter outlines that framework, discusses how it may be used to advance the information sharing and integrated analytic needs of the Intelligence Community, and suggests a system I software architecture for such applications

A pulse generator with a temperature-dependent pulse spacing.

Multivibrators are closed-loop, positive-feedback systems having clearly defined stable or quasi-stable states. The nature of the states of such systems further categorizes multivibrators into three types: (1) astable multivibrators which have two quasi-stable states, (2) monostable multivibrators which have one quasi-stable state and one stable state, and (3) bistable multivibrators which have two stable states. Each type of multivibrator produces a signal form unique to its type. The astable multivibrator produces a rectangular wave signal that is self-starting and free-running. The monostable multivibrator produces a rectangular pulse signal that is triggered externally for each pulse. The bistable multivibrator switches from one state to another by external triggering for each state. Basically the astable multivibrator is a signal-generating device. The rectangular waves generated have periods that are functions of the time required to switch from one quasi-stable state to another and back. These periods are dependent on the type of circuit, the parameters of the active devices, and the values of the circuit elements. If transistors are used as the active devices, the signal becomes a function of temperature since transistor parameters are temperature dependent. Also, the circuit elements are temperature dependent. The purpose of this study was to determine the possibilities of generating a digital signal with an astable multivibrator circuit that was linearly dependent on temperature

The application of filters to time analysis of signals from Ge(Li) detectors.

The measurement of the time of occurrence of a nuclear event using semiconductor nuclear radiation detectors is increasing in importance in the field of nuclear research. Because of their large volumes and high efficiency for the detection of gamma rays, particular emphasis is being placed on the use of lithium drifted germanium detectors. The accuracy of time measurement with most Ge(Li) detectors using current time measurement methods is limited by charge collection variations in the detector and noise of the detector and preamplifier. The reduction of the effects of these limitations is accomplished by the use of filters. In this dissertation, an optimum filter which minimizes the effect of noise on time measurement was determinedi and the minimum timing error associated with this optimum filter was found. For the signal and noise from a Ge(Li) detector, charge-sensitive preamplifier system, the optimum filter is physically non-realizable. The effect of certain realizable RC filters on the reduction of the time measurement error due to noise is presented. The filters examined were time-invariant and time-variant RC high-pass, RC lowpass, and the combination of RC low-pass, RC high-pass filters. Both theoretical and experimental data were examined to determine the best filter. To reduce the errors in time measurement due to both charge collection variations and noise, the time-variant filters provided several advantages. The advantages of the time-variant filters were lower discriminator levels, allowing the reduction of the effect of charge collection variations, -and lower time measurement errors due to noise at the low discriminator levels. The use of the filters in a Ge(Li) detector, charge-sensitive preamplifier system detecting gamma rays was determined. The detector was a 23.4 cc true coaxial Ge(Li) detector, and the energy of the gamma rays was 511 kev. The filters examined were the time-invariant and time-variant filters examined to reduce the time measurement error due to noise. For the time-invariant filters, the mininnim timing error was 6.81 nanoseconds fwhm and 12.6 nanoseconds fw(.l)m. This minimum was obtained using an RC high-pass filter with 2.2 RC equal to 100 nanoseconds. The best time-variant filter was one with an RC highpass filter before the gate and an RC low-pass filter after the gate with 2.2 RC equal to 20 nanoseconds in both filters. The fwhm and corresponding fw(.l)m were S.63 nanoseconds and 10.58 nanoseconds

A Study of Factors Which Contribute to Teacher Turnover in Forty-Nine Selected High Schools in Western Kansas

The purpose of this study was to find contributing factors influencing teachers in selected high schools of Western Kansas to change teaching positions. No previous study or survey was located which dealt with this problem in Kansas. The procedure employed in this study was to contact several hundred secondary teachers who had changed teaching positions between 1955-1960. Questionnaires were sent to teachers in forty-nine selected high schools of Western Kansas, inviting them to participate in this study. There were 300 questionnaires sent out and 203, or 67 per cent, usable responses were received. Of this number, there were sixty women and 143 men respondents. Only the first five reasons listed by the respondents for changing positions were considered significant to the study. The findings of this study revealed “profession advancement” as the largest single factor causing mobility within the teaching profession. There were 57 per cent of the respondents who checked this factor. “Improvement of salary in another system” was ranked second, as 48 per cent of the respondents checked it as a reason for moving to another system. Other important factors listed in order of frequency were “town too small”, “dissatisfaction with administrator”, “dissatisfaction with community”, and too many activities to sponsor”. It was found that 82 per cent of the respondents were married and 42 per cent of the male respondents held Master\u27s degrees. Marriage apparently does not lessen teacher turnover, while the higher the education of the teacher, the more mobility may be expected. Other conclusions of the study were: (1) there is a need for more adequate promotion policy in the selected high schools of Western Kansas, and (2) there is a need for a more uniform salary schedule to be set up by a professional organization to attract and hold teachers

Mapping the Literature of Dental Hygiene: an Update

Objective: This study updates Haaland’s 1999 dental hygiene mapping study. By identifying core journals and estimating database coverage, it characterizes changes in dental hygiene research and aids librarians in collection development and user education. Method: Cited references from a three-year (2015–2017) sample of core dental hygiene journals were collected, categorized into five formats, and analyzed by format and publication year according to Bradford’s Law of Scattering. CINAHL Complete, MEDLINE, and EMBASE were surveyed to determine the indexing coverage of cited journals. Results: The number of cited journal titles increased from 389 in 1999 to 1,675 in 2018. Core Zone 1 titles increased from 5 to 11. Journal article citations increased from 69.5% of all citations in 1999 to 78.4% in the present study, whereas book citations decreased from 18.1% to 5.1%. A newly added category, “Internet sources,” accounted for 8.4% of citations. Overall, 68.6% of citations were 10 years or younger versus 71.4% in 1999. Most Zone 1 and Zone 2 journals were specific to dentistry or dental hygiene. Conclusion: Notable changes since 1999 were an increased volume of literature and a shift from print to online sources, reflecting improved accessibility of the literature and greater Internet use. From 1999 to 2018, citations to journal articles increased, books decreased, websites appeared, and government publications increased slightly. These findings indicate that dental hygiene research is growing and that indexing coverage for this field has improved dramatically in the past two decade

Assessing productivity of Kansas soils

Call number: LD2668 .T4 1978 T47Master of Scienc

Study of the Effect of Interaction Among Variables Affecting Conformity

Sociolog

A Simplified Control Multipurpose Robot (SCMPR)

In the previous chapters, SCMPR was developed as a basic model. It is intended as a domestic robot, but it has many other potential uses. The basic model could be used for all of the following tasks without modification: 1. Carrying mail. 2. Carrying baggage at airports. 3. Heavy yard work. 4. Grocery carrying. 5. Carrying items from a stockroom in a store. 6. Carrying bricks at a construction site. 7. Others. With the addition of circuit cards for sensors, attachments, or small modification, SCMPR could be used for the following tasks: 1. Firefighting. 2. Military weapon. 3. Ac as a pet. 4. Move snow. 5. Search for buried metal. Other models could be developed for more specific tasks. A SCMPR could carry a large mechanics tool box, have a power jack as an attachment, and have connections for jump starting a car. For longer range a SCMPR could be powered by a portable generator. This would enable it to act as a pack mule and a mobile power supply. This model would be useful for long treks and for jobs that require walking and carrying materials, such as fencing. A smaller model could be made to roam indoors with a memory and ultrasonic sensors and could deliver packages. While SCMPR was designed to be useful to the homeowner, its price will limit the market there. However, the possible uses for SCMPR suggests another list of potential customers. SCMPR may find a larger market among small businesses and organizations. SCMPR also provides a useful basic robot for experiments and education at colleges and universities. (It could possibly be sold in the same manner as the Healthkit Hero robot.) In conclusion, a simple robot is feasible with today’s technology and can be made to be useful at a reasonable price