Proceedings of a workshop on Lunar Volcanic Glasses: Scientific and Resource Potential

This workshop on lunar mare volcanism was the first since 1975 to deal with the major scientific advances that have occurred in this general subject, and the first ever to deal specifically with volcanic glasses. Lunar volcanic glasses are increasingly being recognized as the best geochemical and petrologic probes into the lunar mantle. Lunar volcanic glasses, of which 25 compositional varieties are presently known, appear to represent primary magmas that were produced by partial melting of differentiated mantle source regions at depths of perhaps 400 to 500 km. These high-magnesian picritic magmas were erupted onto the lunar surface in fire fountains associated with the release of indigenous lunar volatiles. The cosmic significance of this volatile component, in an otherwise depleted Moon, remains a lingering puzzle. The resource potential, if any, of the surface-correlated volatile sublimates on the volcanic glass spherules had not been systematically addressed prior to this workshop

A Whole-Person Model for Biblical Integration in Business

This paper presents a whole-person model for doing biblical integration in business with applications in the field of information systems. The proposed model consists of five questions arranged in a circular fashion, starting with the identification of an ethical issue and the secular worldview associated with it. The model then asks, “Who is God?” in the context of the ethical issue. This is followed by the question, “What biblical principles/commands apply?” Then, the model asks for a decision of whether we accept, reject, or redeem the secular worldview. The model then continues the process to bring the question back to “Who is God?”, but this time it asks the question in the light of who God is to me, and what I must change to become more like Him. This model allows the Christian to develop a greater love and respect for God, while arriving at a biblically based answer to an ethical dilemma, and then growing closer to God as life changes are made to conform to the newfound understanding of who God is

Nurturing Sabbath Observance in the Lawrenceburg and Pulaski, Tennessee, Seventh-day Adventist Churches

Problem. Sabbathkeeping practices vary widely fran congregation to congregation and among Sabbathkeepers individually. This study attenuated to evaluate the Sabbathkeeping practices of two congregations before and after a series of sermons and a discussion session and to effect a change in these practices as compared to those of the control church, which did not have the benefit of the sermons and discussion. Method. Sermons were developed that followed the theology of Sabbath observance as presented in chapter 2 of this project and were delivered to the test churches. A questionnaire was administered twice to the two test churches, before and after the sermons and discussion, and also twice to the control church, which did not hear the sermons or the discussion. The comparison of the first and second administrations of the questionnaires was done by carputer analysis by Dr. Roger Dudley of the Institute of Church Ministry at Andrews University. Results. Personal observations of the behavior of members of the test churches and the results of analysis of the questionnaires revealed a need and desire for change in Sabbath observance. The comparison of the test group and control group indicated that this project was useful in effecting change in Sabbathkeeping practices. Conclusions. There are definite relationships between length of time as an Adventist, study habits, and spirituality and one\u27s attitude toward Sabbath observance. Although it is difficult to judge motives or to measure changes in the affective domain, which involves values, beliefs, and feelings, a minister can nurture observable growth in his congregation in the area of Sabbathkeeping

A Whole-Person Model for Biblical Integration in Business

This paper presents a whole-person model for doing biblical integration in business with applications in the field of information systems. The proposed model consists of five questions arranged in a circular fashion, starting with the identification of an ethical issue and the secular worldview associated with it. The model then asks, “Who is God?” in the context of the ethical issue. This is followed by the question, “What biblical principles/commands apply?” Then, the model asks for a decision of whether we accept, reject, or redeem the secular worldview. The model then continues the process to bring the question back to “Who is God?”, but this time it asks the question in the light of who God is to me, and what I must change to become more like Him. This model allows the Christian to develop a greater love and respect for God, while arriving at a biblically based answer to an ethical dilemma, and then growing closer to God as life changes are made to conform to the newfound understanding of who God is

Behavior of Pile-Supported Integral Abutments at Bridge Sites with Shallow Bedrock

The advantages of constructing bridges with integral abutments are recognized by transportation agencies worldwide. However, pile supported integral abutments are limited to locations where the depth of overburden can provide fixed support conditions. In Maine, there are often cases where the depth to bedrock prohibits integral abutment bridges from being used. The goal of this research is to determine the feasibility of constructing integral abutments in conditions that cannot provide the fixed support conditions that are traditionally assumed. A finite element model was created that incorporates realistic constitutive and surface interaction models. These models allow for a good prediction of the soil/structure interaction and the structural response. Three critical model responses were identified: pile stresses, pile kinematics, and pilelbedrock interaction. These responses were examined in later parametric studies, which investigated how changes in girder length, pile length, loading, geometry, member properties, and subsurface conditions influenced the pile responses. It was shown that for piles less than 4 m in length on bedrock, the tip of the pile rotates but does not translate horizontally or vertically. This is similar, in principle, to a column with a pinned support. Dead and live loading of the girder induces a rotation of the abutments, which causes pile head displacement. Typically, displacements due to thermal loading are the only lateral pile displacements considered in integral abutment design. Under cyclic live and thermal loading, plastic deformation of the pile did not accumulate if the strains in the head were kept below 125% of the yield strain (1.25 E,). Observations of behavior from the parametric study were used as a basis for a set of design guidelines for piles that did not meet the length criteria of the current Maine Department of Transportation procedure. Using the criteria that pile head strains are kept below 1.25 E,, pile head moments based on data from the parametric studies are calculated from a relationship with the axial load. These relationships were created for various soil conditions and loadings, as well as pile sections. Forces at the pile tip are estimated from the moments at the head of the pile in order to determine if the pinned idealization is valid for the proposed pile/soil/load combinations. The ratio of shear forces and normal forces are compared to an equivalent coefficient of friction between the pile tip and bedrock, along with a factor of safety. The proposed design procedure results in values of moments and shear forces that are higher than those obtained from the finite element model. This is due to the inherent conservatism built into the methods used to calculate pile forces, which presents a worstcase design scenario. The proposed method expands the application of integral abutments to instances where an integral abutment supported by short piles is currently considered impractical. However, even with the expanded design criteria, finite element modeling indicates that there are cases where the combination of geometry, loading, and subsurface conditions may prohibit the use of integral abutments

Search for Life

NASA\u27s Astrobiology program seeks to determine the origin and distribution of life in the Milky Way galaxy using scientific expertise from many disciplines (e.g., astronomy, biochemistry, geochemistry). This presentation, which provides an overview of the progress that has been made in this effort, was delivered on 23 June 2015 at the Green Mountain Academy for Lifelong Learning in Manchester, VT. With NASA\u27s development of the Space Launch System (SLS), vigorous multi-disciplinary scientific research, and additional spacecraft (e.g., TESS) for finding and analyzing planets orbiting other stars, exciting discoveries will continue

NASA\u27s search for life beyond the Earth

Invited presentation (November 3, 2014 for the 119th Annual Conference of the Science Teachers Association of New York State) provides an overview of NASA\u27s search for worlds orbiting other nearby stars on the Milky Way galaxy

Pathways to Higher Education

Presents case studies from Ford's initiative to support efforts to transform universities abroad to enable poor, minority, and otherwise underrepresented students to obtain a university degree. Outlines selected best practices from grantees

Measurements of geomagnetic declination (1685-1910) using land surveys, LiDAR, and stone walls

Nearly 1200 kilometers of boundaries surveyed in 1685-1910, upon which stone walls were subsequently built, were measured using high-resolution LiDAR (Light Detection and Ranging) in the northeastern United States (New Hampshire and New York). The geomagnetic declinations at the time of the original land surveys of those stone wall-defined boundaries have been determined and compared with (i) current geophysical models (i.e., gufm1, IGRF12; United States Historical Declinations-USHD), and (ii) measured declinations (Bauer, 1902). With the exception of lower declinations (i.e., 1.5° eastward) in 1775-1810, the results of this study are in good agreement with gufm1 and IGRF12 geomagnetic declinations. This study yielded systematically higher declinations (i.e., up to 2.0° westerly) than the USHD values during 1750-1780. These results demonstrate that geomagnetic declination can be determined when durable, human-engineered structures on land (e.g., stone walls; roads) are accompanied by detailed historical documentation and accurate land surveys. An example of using old streets (1699) in Colonial Williamsburg, VA is also discussed. Precisions of the bearings along boundaries in the 17th-19th century land surveys used this study were typically better than ±0.30°

Stone Walls of New York and New England

Stone walls are an enduring testimony of the hard labors and work ethic of subsistence family farms on ~100-acre lots. Those lots had been defined by hardy teams of surveyors who used compasses and chains to define the magnetic directions and lengths of boundaries. Farmers cleared (‘improved’) large sections of their land of trees for the purpose of grazing animals and growing crops. As we venture into the deep woods today, we often encounter these forgotten stonewalls that reveal that others long ago were there. Modern airborne surveys using ‘Light Detection And Ranging’ (LiDAR) not only reveal the vast extent of these stone monuments in New York and New England (total estimated length ~200,000 miles), but also information about the slow drift of the Earth’s magnetic field