A Study of Adult Reading in a Selected Rural County of Utah

One of the most remarkable developments of the present age is the apparently large increase in the reading public. The vast output of reading materials being purchased would seem to be evidence that reading is playing an increasingly important part in the daily lives of most people. Magazines and other publications crowd our stores, our homes, our very tables; at first glance, one would think that reading matter usurps our attention, and that we have come to depend upon it. The modern reader glances at the label on a can to learn its contents and uses. He reads the weather forecast and dresses accordingly; he looks to the want-ads for a second-hand typewriter, an apartment, or a lost purse. If the world were suddenly deprived of all printed material, it is probably that many people in the United States would find life exceedingly empty. That the educational world is coming to realized the fundamental importance of reading in the life of the individual citizen is shown by the increasing amount of attention which is being given the subject by scientific investigators. Interest in and a desire for knowledge concerning the reading habits of adults and the factors which affect these habits have developed rapidly during the past few years. Some of the most significant contributions which have been made recently in the field of educational research have been studies of phases of the reading process. The studies reveal that the dominant reading interests of the American people have varied with their changing needs and ideals. Furthermore, these same reading interests have exerted a strong influence upon the nature of the materials supplied for school reading, for religious study, and for the influencing of the people\u27s loyalty to the nation. There are several reasons for the new emphasis upon the reading habits of adults: first, the efforts of librarians and educators generally to promote adult education, and second, the increased interest in reading by adults because of their own realization of its social utility. Also the fact that useful learning is not prevented by advancing age has had a great deal to do with the place of serious reading in a modern society, for it implies that serious reading is helpful at any age

RENEWABLE ENERGY–POWERED HYDROGEN GENERATION AND STORAGE FROM AMBIENT MOISTURE

This research combines the proven Electrochemical Hydrogen Production and Storage System with a renewable energy source for safe and reliable utilization in Department of Defense and Navy applications. Photovoltaic cells provide the most robust and cost effective renewable energy combined with minimal complexity and weight compared to other available renewable energy sources. Previous research has proven solar panels are capable of consistently achieving the desired energy output levels for hydrogen generation. The critical component of this research is the design and installation of a coupled control system and graphics display to effectively distribute energy from the solar panels to the different components of the generation system while monitoring system status and regulating production autonomously. Once all components function as desired independently, they are combined and assessed to confirm operational viability and a final configuration to maximize practical utilization is investigated. The final product is the fully autonomous coupled system utilizing the implemented controller as well as a capabilities study and a proof of concept report.Ensign, United States NavyApproved for public release. Distribution is unlimited

Generalized ray models of the San Fernando Earthquake

The exact Cagniard-de Hoop solutions for a point dislocation in half-space are used to construct models of the strong ground motion observed during the February 9, 1971 San Fernando earthquake (M_L = 6.4). By summing point dislocations distributed over the fault plane, three-dimensional models of a finite fault located in a half-space are constructed to study the ground motions observed at JPL (Pasadena), Palmdale, Lake Hughes, and Pacoima Dam. Since the duration of faulting is comparable to the travel times for various wave types, very complex interference of these arrivals makes a detailed interpretation of these wave forms difficult. By investigating the motion due to small sections of the fault, it is possible to understand how various wave types interfere to produce the motion due to the total fault. Rayleigh waves as well as S to P head waves are shown to be important effects of the free surface. Near-field source effects are also quite dramatic. Strong directivity is required to explain the difference in amplitudes seen between stations to the north and stations to the south. Faulting appears to have begun north of Pacoima at a depth of 13 km. The rupture velocity, which is near 2.8 km/sec in the hypocentral region, appears to slow to 1.8 km/sec at a depth of 5 km. Displacements on the deeper sections of the fault are about 2.5 m. Fault offsets become very small at depths near 4 km and then grow again to 5 m near the surface rupture. The large velocity pulse seen at Pacoima is a far-field shear wave which is enhanced by directivity. Peak accelerations at Pacoima are probably associated with the large shallow faulting. The total moment is 1.4 × 10^(26) ergs

A study of the strong ground motion of the Borrego Mountain, California, earthquake

Several synthetic models are constructed to fit the first 40 sec of the transversely polarized displacement, as recorded at El Centro, of the April 9, 1968 Borrego Mountain earthquake. The modeling is done in the time domain using the response computed for a distributed set of point shear dislocations embedded in a layered half-space. The beginning 10 sec of the observed record is used to model the spatial and temporal distribution of faulting whereas the remaining portion is used to determine the upper crustal structure based on surface-wave periodicity. A natural depth criterion was provided by comparing the amplitude of the direct arrival with the surface-wave excitations. Trade-offs are found to exist between source models and velocity structure models. Within the framework of a layer over a half-space model, faulting of finite vertical extent is required, whereas the horizontal dimensions of faulting are not resolvable. A model which is also consistent with the teleseismic results of Burdick and Mellman indicates massive faulting near a depth of 9 km with a fast rise time producing a 10-cm displacement pulse of 1 sec duration at El Centro. The faulting appears to slow down approaching the surface. The moment is calculated to be approximately 7 × 10^(25) dyne-cm which is somewhat smaller than the moment found by Burdick and Mellman (1976)

Predictability of strong ground motion in the Imperial Valley: Modeling the M4.9, November 4, 1976 Brawley earthquake

Strong-motion displacements, recorded at 33 km (IVC) and 36 km (ELC) from the November 4, 1976 Brawley earthquake, are modeled using the Cagniard-deHoop technique. The IVC record consists almost entirely of transversely polarized motion, whereas the ELC record contains an approximately equal proportion of transversely and radially polarized motion. A simplified shear-wave velocity model was determined from the compressional wave refraction studies of Biehler, Kovach, and Allen (1964). The epicentral location and focal mechanism computed from P-wave first-arrival studies were used to locate and orient a double-couple point source within the layered half-space. The far-field time function and source depth were the only parameters without good independent constraints. A triangular far-field time function with a duration of 1.5 sec and a source depth of 7 km were sufficient to model the first 25 sec of tangential ground motion. It appears that the effects of velocity structure on the propagation of long-period SH waves are predictable in the Imperial Valley. A study of the synthetic Fourier amplitude spectra indicates that wave propagation effects should be included in studies of source spectra and seismic wave attenuation

Detecting failure events in buildings: a numerical and experimental analysis

A numerical method is used to investigate an approach for detecting the brittle fracture of welds associated with beam -column connections in instrumented buildings in real time through the use of time-reversed Green’s functions and wave propagation reciprocity. The approach makes use of a prerecorded catalog of Green’s functions for an instrumented building to detect failure events in the building during a later seismic event by screening continuous data for the presence of waveform similarities to one of the prerecorded events. This study addresses whether a set of Green’s functions in response to an impulsive force load can be used to approximate the response of the structure to a localized failure event such as a brittle weld fracture. Specifically, we investigate whether prerecorded Green’s functions can be used to determine the absolute time and location of a localized failure event in a building. We also seek to differentiate between sources such as a weld fracture that are structurally damaging and sources such as falling or colliding furniture and other non-structural elements that do not contribute to structural failure. This is explored numerically by comparing the dynamic response of a finite-element cantilevered beam model structure to a variety of loading mechanisms. A finite-element method is employed to determine the behavior of the resulting elastic waves and to obtain a general understanding of the structural response

Strong-Motion and Broadband Teleseismic Analysis of the Earthquake for Rupture Process and Hazards Assessment

We have used broadband records from 18 teleseismic stations and three-component records from 16 local strongmotion stations in a formal inversion to determine the temporal and spatial distribution of slip during the earthquake. Separate inversions of the teleseismic (periods, 3-30 s) and strong-motion (periods, 1-5 s) data sets result in similar source models. The data require bilateral rupture, with relatively little slip in the region directly updip from the hypocenter. Slip is concentrated in two patches: one centered 6 km northwest of the hypocenter at 12-km depth with an average slip amplitude of 250 cm, and the other centered about 5 km southeast of the hypocenter at 16-km depth with an average slip amplitude of 180 cm. This bilateral rupture results in large-amplitude ground motions at sites both to the northwest and southeast along the fault strike. The northwestern patch, however, has a larger seismic moment and overall stress drop and thus is the source of the highest ground-motion velocities, a result consistent with observations. The bilateral rupture also results in relatively moderate ground motion directly updip from the hypocenter, in agreement with the ground motions observed at Corralitos, Calif. Furthermore, there is clear evidence of a foreshock (M~4.5-5.0) or slow rupture nucleation about 2 s before the main rupture; the origin time implied by strong-motion trigger times is systematically nearly 2 s later than that predicted from the high-gain regional-network data. The seismic moment obtained from either or both data sets is about 3.0x10^(26) dyne-cm, and the seismic potency is 0.95 km^3. Our analysis indicates that the rupture model determined from the teleseismic data set alone, independent of the strong-motion data set, is adequate to predict many characteristics of the local-strong-motion recordings

Retention characteristics of some antibiotic and anti-retroviral compounds in hydrophilic interaction chromatography using isocratic elution, and gradient elution with repeatable partial equilibration

© 2018 Elsevier B.V. The separation of some zwitterionic, basic and neutral antibiotic and antiretroviral compounds was studied using hydrophilic interaction chromatography (HILIC) on bare silica, bonded amide and urea superficially porous phases. The differences in the selectivity and retentivity of these stationary phases were evaluated for compounds with widely different physicochemical properties (logD −3.43 to 2.41 at ww pH 3.0). The mobile phase was acetonitrile-ammonium formate buffered at low ww pH. Compounds containing quinolone and serine groups showed poor peak shapes on all columns, attributed to metal-oxide interactions with system metals. Peak shapes were improved by addition of citrate buffers. Gradient elution, particularly with regard to column equilibration, was also studied due to the large differences in retention factors observed under isocratic conditions. Full equilibration in HILIC was slow for both ionogenic and neutral solutes, requiring as much as ∼40 column volumes. However, highly repeatable partial equilibration, suitable for gradient elution, was achieved in only a few minutes. Pronounced selectivity differences in the separations were shown dependent on the partial equilibration time