An Anaylsis and Comparison of Eschatological Elements in the Hymns and Sermons of the Lutheran Church--Missouri Synod

It is in the wake of the proceedings of the Evanston Assembly of the World Council of Churches, and the re-examination of the Christian Hope in nearly every denomination of Christendom that this paper has been prepared. If it can truly be said that the actual living doctrine of a church is not properly that contained in its books only, but rather also that proclaimed from its pulpits and in the worship of its people, then this paper has value. It is the writer\u27s belief that this study will suggest more nearly than any other study to date the actual eschatological awareness of the people in the pews of The Lutheran Church--Missouri Synod, as well as some of the major factors that have influenced their Christian Hope

GREENSPACE: Virtual Reality Interface for Combine Operator Training

The complexity of operating a farm combine has increased dramatically in recent years with the introduction of features including automatic guidance, precision farming, and sophisticated implements with specialized controls. In this work, we describe the development of a virtual reality interface for use in operating a combine while harvesting virtual crops. Using the actual combine cab hardware for control input commands and operational displays, we provide a virtual farm that allows the operator to operate every aspect of the combine while using the true set of buttons, levers, and switches for a realistic driving experience. This simulator is designed primarily for operator training on the adjustment and operation of the machine controls, the use of automatic guidance systems, and interaction with the precision farming automation systems. However, the simulator is also applicable for engineering design development, where new control modes and hardware could be assessed in a virtual environment

Design, Development, and Testing of an Automated Window Sliade Controller

An approach to the design of active window shades is developed to control the direct solar gain through a window. Using simple actuation hardware and sensors, a control strategy is presented that automatically adjusts window shades to save HVAC energy by controlling direct solar radiation passing through a window. The control algorithm is based on a simple approach that admits direct light in the winter and blocks the direct light in the summer, while providing shade adjustment that affords maximum visibility through the window. Cloudy skies or indirect sun result in horizontal placement of the shades, and the shades close at night. The implementation uses two thin-film photovoltaic cells as sensors and a control algorithm that is independent of the window orientation, latitude, or solar time, so that it operates properly in any installation location. Preliminary analytic and test results show significant energy savings when the automatic window shades are compared with a window without shades, and with a window outfitted with fixed horizontal shades

Modeling and Designing a Hydrostatic Transmission With a Fixed-Displacement Motor

This study develops the dynamic equations that describe the behavior of a hydrostatic transmission utilizing a variable-displacement axial-piston pump with a fixed-displacement motor. In general, the system is noted to be a third-order system with dynamic contributions from the motor, the pressurized hose, and the pump. Using the Routh-Hurwitz criterion, the stability range of this linearized system is presented. Furthermore, a reasonable control-gain is discussed followed by comments regarding the dynamic response of the system as a whole. In particular, the varying of several parameters is shown to have distinct effects on the system rise-time, settling time, and maximum percent-overshoot

Hub-mounted actuators for blade pitch collective control

Blade collective pitch control is provided for a rotor system by rotary actuators located between adjacent blades. Each actuator is connected to the leading edge of one adjacent blade and the trailing edge of the other adjacent blade

Salmonine Consumption and Competition for Endemic Prey Fishes in Bear Lake, Utah-Idaho

Two principal sport fish—the indigenous Bonneville cutthroat trout Oncorhynchus clarki utah and the introduced lake trout Salvelinus namaycush—are the dominant piscivores in Bear Lake, a 282-km^2 oligotrophic system. These piscivores rely predominantly on four endemic prey fish species that make up a major portion of the unique Bear Lake fish assemblage. We estimated the annual biomass of pelagic and benthic prey fish by using hydroacoustic and trawling techniques. We also estimated the lakewide abundance of piscivores with a multiple mark–recapture survey and used a bioenergetics model to compare the population-level consumption of prey fish with prey fish production. Prey fish biomass declined to a minimum during 1991 and 1992 but subsequently recovered to reach maximum levels during 1994 and 1995. The proportion of maximum ration estimates from model simulations indicated that the piscivores were consuming well below maximum rations during a period when predation exceeded prey fish production, thereby providing the potential for a predator–prey imbalance. Predation impacts by lake trout cohorts were prolonged because of high survivorship and long life expectancy. Although cutthroat trout outnumbered lake trout, the larger, more piscivorous size-classes of cutthroat trout accounted for only 12.5% of their population. This information, combined with overlapping diets and declining condition factors at increased piscivore biomass, also indicates that lake trout may be competing with cutthroat trout during periods of low prey fish resources. Lake trout predation on juvenile cutthroat trout, combined with competition with other age-classes, also contributes to the poor survival of cutthroat trout. Although prey fish abundance appears to be largely influenced by bottom-up factors related to water elevation, lake trout exert a decoupled predatory threat to the endemic prey fish populations and have the potential to suppress endemic fishes during unpredictable periods of poor prey fish production