Seminary and Archaeology
P-01 Egypt as God’s People: Isaiah 19:19-25 and its Allusions to the Exodus
Stephane A. Beaulieu, PhD Student in Old Testament
Isaiah 19:19-25 provides an overview of God’s relationship with Egypt and, more particularly, portrays the Egyptians as God’s people. When reading these concluding verses of Isaiah 19, one is struck by the question: How do the allusions to Exodus 3 in Isaiah 19:19-25 contribute to the meaning of the latter? Isaiah employs allusions with certain key words that lead the reader to see the associated story of Exodus. However, instead of Israel being the subject of a long narrative story, we have here a concise prophecy, but this time with Egypt as the subject.
P-02 Gods, Demons, and Other Semi-Divine Beings in the Book of Deuteronomy
J. Amanda McGuire-Moushon, PhD Student in Religion
This research analyzes Deuteronomy chapters 4, 17, 29, and 32 exegetically in order to determine the characteristics and role of supernatural sub-divine beings within the message of the book. These particular chapters illustrate the thesis of the book of Deuteronomy, that YHWH alone is worthy of worship as both the Creator and Redeemer. Its mention of other so-called deities and objects of worship enhance this thesis. Deuteronomy acknowledges the existence of other supernatural beings but prohibits Israel from worshipping such beings. This research is part of a larger project that examines angels, demons, gods, and other semi-divine beings from Deuteronomy to Kings.
P-03 Looking at Sabbath through a lens of holism
Cory Wetterlin, PhD Student in Theology
The basic content of this paper is looking at Sabbath through a lens of holism. The lens of holism is the middle ground in between the modernist atomism and the deconstructionalist nihilism. It allows the whole as well as the parts to be important in constructing a system of theology. Recognizing that God’s presence is the whole of the Sabbath. God resting in the Sabbath is what caused the Sabbath to be holy. Therefore all of the different aspects of the Sabbath (the seventh day, rest, grace, social justice, ecology, covenant, and worship) are affected by God’s presence. Just The whole of God’s presence affects each part each part also if needed to show the whole of the presence of God. For example: without social justice God’s presence is not fully represented. Jesus showed social justice clearly in his actions on the Sabbath. Following this holistic view of Sabbath further I also suggest that Sabbath is the culmination or the whole of the week. Therefore all the different aspects of Sabbath are to be integrated into the rest of the week. For example: we worship every day of the week, pursue social justice every day of the week, rest in God’s provision every day of the week, etc. Sabbath stands out from the other days of the week because it is the culmination of the other days of creation and it is the sign of the covenant. The “whole” of the presence of God is also reflected in the covenant aspect of the Sabbath because the sign of seal of God is the Holy Spirit.
P-04 Potential Indicators of Catastrophic Flooding in Chinle Valley
Reed Richardi, MDiv Student, SDA Theological Seminary
The Chinle Valley project is an ongoing study of potential indicators of previously unidentified catastrophic flooding in Chinle Arizona. These potential indicators include: the presence of scoured bedrock channels in several locations, erratic quartzite and granodiorite boulders (the largest of which is approximately 20 tons) resting on top of the alluvium, and a large number of streamlined mesas (interdunal deposits) whose shape and orientation could be partly due to aquatic sculpting. The combination of these data hold good potential toward forming a hypothesis of previously unidentified catastrophic flooding in Chinle Arizona.
P-05 East Jordan in Global History: The View from Hisban and the Madaba Plains
Oystein S. LaBianca and Jeffrey Hudon*, Behavioral Sciences Department
*PhD Student in Biblical and Near Eastern Archaeology
In this paper the perspective and narrative of global history will be adopted as a heuristic for synthesizing over four decades of archaeological survey and excavations in the country of Jordan by the Madaba Plains Project (MPP). The MPP collaboration sponsors on-going investigations of three major multi-millennial archaeological sites and their hinterlands in Jordan, namely Tall Hisban, Tall Jalul and Tall al-Umayri. Some examples of global history events and processes to which the rich and complementary data sets of the three MPP projects promises to contribute include the history of tribal societies and their interactions with secondary states and empires; responses by local populations to killer famines, draughts, plagues and epidemics; the causes and consequences of in- and out- migrations of small and large groups of peoples; local transformations wrought by ever-expanding economic world system; local responses to episodic climatic changes and intensifying rates of environmental degradation; and last, but not least, local adaptation to four millennia of nearly unabated imperial interventions. The will conclude by assessing the merits of the global history perspective as a grand narrative for synthesizing the findings of a multi-disciplinary and regional collaboration such as MPP.
P-06 2012 Student/Faculty Research at Tall Hisban, Jordan
Stanley Beikmann, Department of Agriculture
This poster will summarize the work of the Grant Research Goals of the Jordan Field School trip to Tall Hisban in May/June of 2012. Specifically the Poster will review our findings on 1.) observations made of environmental, genetic and morphological factors that make Jordanian plants “xeriscapic” plants, the implications for their sustainability and xeriscapic plants discovered that have potential for introduction into the U.S. for use in the home landscape 2.) the results and formative conclusions, of our academic and physical research, for evidence supporting our premise that Tall Hisban is the site of an Iron Age Royal Garden.
P-07 Preparing Students for Careers in Effective International Agricultural Development
Katherine Koudele, Kristin Witzel, and Thomas Chittick, Department of Agriculture
The Department of Agriculture at Andrews University receives many requests to assist various parts of the developing world with improvement of their food security. In order to more effectively address these needs, we have developed a Bachelor of Technology degree in International Agriculture Development. The goal of the program is to prepare student to work with non-profit organizations, governmental agencies, and others to address the world’s growing food needs in a sustainable manner.
P-08 The Impact of Servant Leadership on Job Burnout among Employees of a Christian Hospital: Structural Equation Model
Jerry L. Chi1 and Grace C. Chi2, 1School of Business Administration, 2Department of Nursing
Servant leadership reflects the Christian values and Biblical principles of providing service to others. The effects of servant leadership on employees are not known. Our purpose was to examine whether the practice of servant leadership in a Christian hospital improves effectiveness and/or decreases job burnout among employees. Full-time employees of the Metroplex Adventist Hospital were surveyed. Structural Equation Model analysis of the 644 responses showed that servant leadership offers five virtues: interpersonal support, community building, altruism, egalitarianism, and moral integrity, all of which were significantly negatively correlated with job burnout in terms of emotional exhaustion, depersonalization, and personal accomplishment. Age was the most significant demographic variable: older healthcare providers perceived a higher level of servant leadership and experienced less job burnout. The results suggest that a spirit of service in the executive leader can permeate an entire hospital, alleviating human “pain” both physical and psychological.
P-09 The Use and Understanding of the International Leadership Association’s Guiding Questions: An Exploratory Study
Shirley Freed; Dan Jenkins; Rian Satterwhite; Matthew Sowcik; Kristine Hoover, Leadership Department
Over the past ten years, the International Leadership Association (ILA) has become the premier association for leadership programs. One of their contributions to the growing numbers of programs/members is the development of the “Guiding Questions” document which leads program faculty through a series of questions as they plan program components: Context, Conceptual Framework, Content, Pedagogy and Assessment. Data (interviews and documents) were collected from eight institutions who have used the Guiding Questions to understand how they are being used, challenges related to their use and recommendations for ILA as they continue to fine tune the questions. Results indicate a wide variety of usage.
P-10 Differentiating math and test anxiety, results from two samples
Rudolph N. Bailey, Department of Educational & Counseling Psychology
Differentiating math anxiety from test anxiety has been difficult since researchers have typically used measures of math anxiety that are based on a test anxiety conceptual base. In our study, we investigated children from two different studies. In the first study, 341 children, aged 9-11 years from rural Northeastern Indiana while the second study was comprised of 523 children, aged 9-12 years from a diverse Northeastern Indiana school district. Exploratory factor analysis indicated In the first study a 3-factor model for the NMAQ/MASC/CTAS, explained 44.97% of the total variance and was comprised of General Math Anxiety, Worry, and Off-task Behaviors. Items from the math anxiety questionnaires loaded on the same factor while items from the test anxiety questionnaire loaded on the remaining two factors. In the second study, a 4-factor solution was deemed the best fit. The conclusion seems to be that math anxiety is unidimensional and different from test anxiety.
P-11 Test Anxiety in Girls and Boys: A Detailed Analysis
Jeannie Montagano, Department of Educational & Counseling Psychology
This study examined gender differences in test anxiety using the Children’s Test Anxiety Scale (CTAS; Wren & Benson, 2004). The sample was 521 student equally divided between boys and girls. There was a significant difference between genders on the CTAS (F(2,515)=11.682; p=.001). The mean score for females was 2.33; while the mean score for males was 2.14. An exploratory factor analysis suggested the same factor structure for both samples. Thus both boys and girls experience test anxiety in the same way. More girls than boys were found in the moderate to severe groups, according to our criterion of 1.5 standard deviations above the mean. Considering all three approaches, more girls were test anxious but both genders experience test anxiety in the same way.
P-12 Evaluating Sources: Information Literacy and the Epistemology of Testimony
Terry Robertson, James White Library
Evaluating information is a core facet of “information literacy.” Most IL literature on evaluating information illustrates principles with examples drawn from the objective and the empirical, i.e. medicine, economics, etc. While these examples may speak to evaluating the qualitative and quantitative research of religious experience (Doctor of Ministry projects), the connection to theology and exegesis is not evident. I suggest recent works on the epistemology of testimony provide a useful framework for discussing the evaluation of information in theological inquiry.
P-13 E-Textbooks Usage by Students at Andrews University: A Study of Attitudes, Perceptions, and Behaviors
Silas Marques de Oliveira, James White Library
Although e-books have been incorporated into the academic library’s collection for over a decade now, it has not been, until today, without question. It is still, as the literature reveals a controversial topic for librarians, publishers, and users around the globe. Although many researches indicate that patrons still prefer the printed format over the electronic version, the tipping point seems to be reaching us earlier than many might think. The growing availability of e-books to users has begun to affect user perceptions and attitudes, creating more access and usage opportunities, a recent research concluded. This paper presents the results of a large scale survey designed to investigate usage patterns of and attitudes towards e-books by students at Andrews University. One important aspect which the study investigated is how the use of e-books impacts student’s learning. The subjects were divided into two different groups, namely, (1) students who purchased the electronic version of an e-textbook for a class (the bookstore offered 74 books in an electronic format), and (2) students who had the opportunity of purchasing the electronic version of a textbook but preferred the traditional print format. Only four percent of the population studied opted to use an e-textbook. The print version is still greatly preferred by college students. However, the majority of those who used e-textbooks, would use it again and would recommend it to a friend. Lack of awareness, not knowing how to get it, eyestrain, and difficulty of reading are the culprits for students not using e-books more often. Although it is possible to note an increase of e-books usage, caution is recommended when developing collection development policies when includes e-books.
P-14 Ebooks and SDA Libraries
Lauren Matacio, James White Library
Although ebooks have been incorporated into the academic library's collection for over a decade, their adoption is still controversial and problematic. Many studies indicate that the majority of patrons still prefer the printed format; however, the growing availability of e-books to users has begun affecting perceptions and attitudes. This poster presents the results of a survey of Seventh-day Adventist librarians' perceptions and experiences with e-books in the library collection.
P-15 Evaluation of the Library Collection of Andrews Academy and its Use by Faculty and Students
Felipe E. Tan, James White Library
Evaluation of library collections helps determine how the library fulfills it mission. This study is an analysis of the collection at the Andrews Academy Instructional Media Center. The researcher looked at the growth and funding of the library collection from 1969 to 2012. Its present holdings of 11,204 items (9,901 print and 1,303 media materials) gives a ratio of 50 items per student based on the current enrollment of 223 students. These figures show that the holdings are quantitatively strong. As of press time, survey questionnaires on the use of the library collection have been distributed to Andrews Academy faculty and students. The survey data will help identify the strengths and weaknesses as well as the opportunities and threats. However, the challenges appear to be along the lines of digital technology. The eight computers in the Instructional Media Center are long overdue for replacement. The strong print and media collection should be complemented by academic databases and online resources. Recommendations for improving the effectiveness of the library collection will be made to the Andrews Academy administration.
P-16 Parental and Religiosity Influence on Alcohol Use and Sexual Behaviors Among Christian College Students
Alina M. Baltazar*, Duane McBride and Kathryn Conopio** Behavioral Sciences Department and Institute for Prevention of Addictions
*PhD Student in Human Development and Family Studies, Michigan State University
**MSA Student in Community and International Development
Alcohol use and having sex is often synonymous with being a college student. There are public health concerns regarding these behaviors. Certain variables appear to be protective and others put students at risk for these behaviors. The hypothesis that religiosity and parental involvement are inversely correlated with college student alcohol use and sexual activity was supported as was the hypothesis that family conflict would be positively correlated with alcohol use and sexual activity. College campuses should try to encourage continued parental involvement for their students, make available counseling resources to work on family conflict, and encourage religiosity among college students as a way to address alcohol use and sexual behavior.
P-17 Well-Being and the Internalization of Sabbath Keeping
Karl G. D. Bailey and Arian C. Emanuel*, Department of Behavioral Sciences
*MSA Student in Community and International Development
The internalization of religion is related to increased subjective well-being. However, relatively little is known about the process of religious internalization. In order to examine whether internalization of core religious behaviors show the same relationships with well-being as do overall measures of internalization, we studied the internalization of Sabbath keeping among a convenience sample of Seventh-day Adventist young adults on a Seventh-day Adventist university campus. In addition to replicating previous findings from more general measures of religious internalization with the internalization of a specific set of behaviors, we also developed a short instrument for measuring internalization of Sabbath keeping for use in further studies on the means of increasing internalization of Sabbath keeping, and on the role of internalized Sabbath keeping on individual and church health.
P-18 Family Meals Participation and Suicidal Ideation
Lionel Matthews, Department of Behavioral Sciences
Suicide has been widely studied as a social phenomenon across time and national boundaries. Despite the considerable literature generated on suicide and the associated factors, the specter of suicide remains. It is estimated that over 33,000 Americans committed suicide in the 2001 -2009 decade. Adolescents are especially prone with an estimated 16% of students in grades 9 to 12 indicating they have seriously considered taking their own lives and 7.8% saying that they attempted doing so. Among the factors that have demonstrated a mediating effect on adolescent risk behaviors including suicide is participation in family meals. This study examines the effect of family meal participation by adolescents in four states on suicidal ideation. Preliminary analysis reveals an inverse relationship between family meal participation and suicidal ideation.
Science, Technology, Engineering, and Mathematics (STEM)
P-19 Developing an Integrative Wholistic Paradigm of Research
Desmond H Murray, Department of Chemistry and Biochemistry
Building Excellence in Science and Technology (BEST Early), www.bestearly.com,
My philosophy of research begins with a constant and deep recognition of the divine spark that gives rise to human insight and creativity. Research is, for me, an intensely sacred calling that winds through inspiration, revelation and imagination. It is also a journey of discovery as the root word – recherche – ‘to go about seeking,’ suggests. I believe the attitude of a relentless researcher is eternally embedded in the Old Testament archetype of Jacob wrestling and in the New Testament text ‘Ask, and it shall be given unto you; seek, and ye shall find; knock, and it shall be opened unto you.’ Emily Dickinson’ poem, ‘This World is Not Conclusion” also expresses a powerful reason ‘to go about seeking.’ My approach to research integrates varied and sometimes discordant elements, like a jazz composition, that answers the questions: when, who, what, and why? It proactively seeks, promotes and provides early engagement for all God’s children in one of the most consequential adventures known to humankind. The ‘what and why’ of my research focuses on organic synthesis, while ‘when and who’ is manifested through longstanding efforts towards universal adoption of early research participation. These aspects are supplemented by public science initiatives.
P-20 Validation of Bird Flu and Human Flu Viral Haemagglutinin (HA) Multimers as Probes for the Detection of 2, 3- and 2, 6-Sialic Acid Bond Structures
K. Partyka1, M. McDonald1, D. D. Nowack2, B. B. Haab1
1Cancer Immunodiagnostics, Van Andel Institute, Grand Rapids, MI
2Chemistry and Biochemistry, Andrews University, Berrien Springs, MI
The carbohydrate (CHO) moieties attached to glycoproteins are proving to be important loci for detection and regulation of cellular activity. Changes to the CHO moieties are linked to the presence of pre-cancerous and cancerous changes in the cells and tissues. In particular, changes in sialic acid bonds between 2,3 and 2,6 linkages may be important indicators of disease, but unfortunately an effective way of precisely measuring these linkages in biological samples does not yet exist. The various HA proteins (bird flu, swine flu, human flu) bind to 2,3- and 2,6-sialic acid bonds as a preliminary step for infection within the host. We hypothesized that HA proteins could be used to detect specific presentations of sialic acid moieties on glycoproteins captured from biological samples. In this study we used a simple method of multimerizing the HA protein to increase its binding avidity, and applied the HA proteins to the detection of sialic acids on biological glycoproteins. Using that specificity to detect changes in glycoprotein CHO structures, we discovered that the HA probes can differentiate between 2,3- and 2,6- sialic acid bond types in an efficient and reproducible manner. Studies also are underway to determine the relationship between sialic acid linkages and the presence of pancreatic cancer. This approach may provide robust and sensitive measurements of specific sialic acid presentations in biological samples.
P-21 Nitric Oxide interactions with Iron investigated with spectroscopy
David Randall1, Sheng Zheng2, Timothy Berto2, Nicolai Lehnert2
1Department of Chemistry, Andrews University
2Department of Chemistry, University of Michigan
Nitric Oxide (NO) is an important molecule in mammalian physiology that is involved in both signaling and immune defense. However, certain pathogenic bacteria have evolved enzymes that are able to detoxify NO by reduction to nitrous oxide (N2O), thus neutralizing this important immune defense agent. Collaborators at the University of Michigan have recently developed a model complex for the active site of this enzyme. This compound binds two NO molecules, and upon two-electron reduction, transforms them into N2O. Current work is now focused on understanding the mechanism of this reaction. Towards that end, we will present a titration of this model complex with NO as followed by EPR (and IR?) spectroscopy. We will also present an assay that was developed in which a cobalt(II) porphyrin complex (CoTPP) is used to measure the quantity of NO dissolved in various organic solvents.
P-22 Simultaneous Hydroxyl Number Determination and Moisture Analysis of Highly Functional Polyols using NIR Spectroscopy
Ryan T. Hayes, Stephen Gardner, Andrew Master, and Ethan Catron, Department of Chemistry & Biochemistry
Highly functional polymers, including hyperbranched polymers and dendrimers, are an emerging class of additives for a variety of industries such as the paints and coatings, plastics, adhesives, inks, and personal care products. The outer functional group density determines how these highly branched materials will perform and enhance the properties of consumer products. Traditional electrochemical titration methods provide an indirect method for determining the concentration of hydroxyl functional group per gram of material, and these methods are well known but challenging for highly branched polymers. Near Infrared spectroscopy provides a promising alternative that directly and nondestructively measures the concentration of hydroxyl functional groups in a dendritic polymer sample without chemically modifying the sample. This method can be adapted for the simultaneous determination of hydroxyl number and water content thus providing quality control information for formulators and manufacturers in the use of dendritic polymers for commercial products. NIR spectroscopy is simple, direct, and does not require the time and sample preparation of hydroxyl number titrations. This poster will show how NIR spectroscopy can be performed on highly functional polymers samples and how these values compare to theoretical and measured values of hydroxyl number and moisture content.
P-23 Carboxypeptidase O Regulates Epithelial Cell Migration and Adhesion
Peter J. Lyons* and Lloyd D. Fricker, Department of Molecular Pharmacology, Albert Einstein College of Medicine
*Currently Department of Biology, Andrews University
Proteolytic enzymes play important roles in many tissues of the body. We have recently begun to characterize a protease named carboxypeptidase O (CPO), which is found in epithelial cells lining the small intestine and is able to remove C-terminal glutamates from substrate proteins. When CPO was expressed in a model epithelial cell line, it was found to be present in small intracellular vesicles of unknown identity. These CPO-expressing cells exhibited faster migration and greater cell-cell adhesion than control cells. This phenotype and other work suggest a possible role for CPO in cancer mechanisms.
P-24 Stable Isotope Analysis of Incisor Enamel in Thirteen-lined Ground Squirrels (Ictidomys tridecemlineatus)
Jang, Woo Jong1, H. Thomas Goodwin1, Benjamin H. Passey2, and Brooke Kisser1
1Department of Biology, Andrews University, Berrien Springs, MI
2Department of Earth and Planetary Science, Johns Hopkins University, Baltimore, MD
We investigated stable-isotope profiles of incisor enamel from 8, well-referenced thirteen-lined ground squirrels (Ictidomys tridecemlineatus), using laser ablation coupled with gas chromatography–mass spectrometry. Stable isotope profiles were referenced to real time (cumulative dental growth record from mid-August to early May) based on known dates of events reflected in incremental dentin structure (entry into and exit from the hibernation season, fall injections of oxytetracycline). During late summer and fall, ∂13C of incisor enamel peaked between late August and mid September (individual peak values ranged from -3.7 to -1.9 ‰), with lower values before and after. Values of ∂13C were relatively low but variable during hibernation (≤ -9.6 ‰) and in the spring immediately after hibernation (≤ -11.0 ‰). Fall values of ∂18O were significantly and positively correlated with ∂13C for 5 of 8 squirrels. The roughly coordinated peak in ∂13C values in late summer across squirrels may indicate transient increase in the proportion of C4 plants (directly or indirectly via insects that feed on C4 plants), although this interpretation must be tested. Overall, our results indicate that fine-scale seasonal variation in paleo-diet and perhaps other paleoecological attributes might be reconstructed from incisors of fossil rodents.
P-25 Rocks and Fossils Reveal Island History
James L. Hayward1 and Shandelle M. Henson2
1Department of Biology, 2Department of Mathematics
Protection Island National Wildlife Refuge, a marine bird and mammal breeding center, was established on the island in 1988. Several geological features of this island serve as wildlife attractants: steep cliffs of unconsolidated Pleistocene and Holocene sediments around the island periphery afford ideal nesting sites for burrowing auklets and puffins; cliff ledges provide platforms for nesting cormorants; longshore currents deposit gravel spits at the east and west ends of the island on which gulls and guillemots nest and seals haul out. These features attract about 70% of Washington’s inland breeding seabirds each year and a high proportion of the state’s breeding seal population. Despite the presence of geologic features crucial to the breeding success of marine birds and mammals, little is known about Protection Island’s geological structure and paleoecological history. In collaboration with two geologists, we are 1) developing a geologic framework of mapped stratigraphic units; 2) collecting and preserving sediment and fossil samples from each stratigraphic unit; 3) characterizing the composition, thickness, depositional history, palynology, and paleoecological history of each of the island’s stratigraphic units; 4) developing a geologic map of Protection Island which will detail its stratigraphic features; 5) determining the ages of the various stratigraphic units; 6) developing a paleoecological history of the entire island; and 7) developing recommendations for the conservation of geological features of Protection Island. This poster provides a preliminary report of our findings.
P-26 Copulation behavior in the Glaucous-winged Gull
Amanda Sandler*1, Gordon Atkins1, Mindy McClarty1, Melisa McCormick1, Shandelle Henson2 and James Hayward1
1Department of Biology, 2Department of Mathematics, *MS Student in Biology
Biologists measure an animal’s reproductive fitness by the number of viable offspring produced, so reproductive behavior is considered a critically important aspect of an organism’s biology. Copulation by most birds is relatively quick and silent, but copulation in gulls involves highly visible wing-flagging and loud vocalizations. Copulation behavior and the male’s copulation song have not been described for any species of gull. We aim to describe the temporal and spectral features of the male’s copulation song and the influence that abiotic environmental factors have these features. Poisson distribution analysis indicated that the copulation mounts were not were not randomly distributed in space and time in a large area of the breeding colony, suggesting social facilitation may play a role in copulation behavior of these birds. For three weeks during the 2012 nesting season, we closely observed copulation behavior and recorded male copulation songs for approximately 30 pairs of Glaucous-winged Gulls. Average duration of a copulation mount was 87 seconds and the average number of cloacal contacts per mount was 2.45. Copulation song analysis is underway. This study provides the first baseline data for understanding the impact of the dramatic behaviors associated with gull copulation on reproductive fitness in detail.
P-27 Egg-laying behavior in Glaucous-winged Gulls
Gordon Atkins1, Amanda Sandler*1, Mindy McClarty1, Melisa McCormick1, Shandelle Henson2 and James Hayward1
1Department of Biology, 2Department of Mathematics, *MS Student in Biology
Various aspects of reproductive biology of Glaucous-winged gulls have been evaluated. Egg laying behavior has not yet been documented. We modified digital spy-cameras to monitor nests continuously during daylight hours. During labor, females stood or crouched over their nest for an average of 4.8 minutes. An average of 27 visible contractions occurred with maximum rates of 15.3 contractions/min during hard labor. During labor the wings were slightly spread and the abdomen was held close to the ground in a crouched position. After laying, females stood over the nest for an average of 8.9 min, which was followed by turning the egg and sitting on the egg. Three of the females vocalized during labor. This consisted of very short single or doublets of syllables having a fundamental frequency 900 kHz. Two females gathered small amounts of nest material and placed it on their backs while sitting on their nests prior to labor, and one did so while incubating after laying. While eggs were laid throughout the day and night, more eggs were laid between 0500-0800hr. The loss of eggs (mostly cannibalized) also varied significantly with most eggs lost in the early morning or later in the afternoon.
P-28 Onset of Synchrony in Avian Ovulation Cycles
Danielle Burton1*, Shandelle Henson1 and James Hayward2
1Department of Mathematics, 2Department of Biology, *MS Student in Math & Science
Spontaneous oscillator synchrony occurs when populations of interacting oscillators begin cycling together. Synchrony has been documented in many physical and biological systems, including estrous/menstrual cycles in rats and humans. In previous work we showed that Glaucous-winged Gulls (Larus glaucescens) can lay eggs synchronously on an every-other-day schedule, and that synchrony increases with colony density. Here we pose a discrete-time model of avian ovulation to study the dynamics of synchronization. We prove the existence and uniqueness of an equilibrium solution which bifurcates to synchronous cycles as colony density increases.
P-29 Steady State Solutions to General Population Model
Joon H. Kang, Department of Mathematics
Multiple species of animals are competing in the same environment. Under what conditions do they coexist peacefully? Under what conditions do they coexist in a unique pattern? Or under what conditions does either one of the species species become extinct, that is, is either one of the species excluded by the other? It is natural to say that they can coexist peacefully if their rates of reproduction and self-limitation are relatively larger than those of competition rates. In other words, they can survive if they interact strongly among themselves and weakly with others. We investigate this phenomena in mathematical point of view.
P-30 A note on an inequality of Riemannian submersion invariant
Yun Myung Oh, Department of Mathematics
It has been known that if a Riemannian manifold admits a non-trivial Riemannian submersion with totally geodesic fibers, then it cannot be isometrically immersed in any Riemannian manifold of non-positive sectional curvature as a minimal submanifold. B.Y. Chen proved this using an inequality involving the submersion invariant and his inequality shows the maximum value of the invariant. I could find another inequality that gives the minimum of the submersion invariant under a certain assumption.
P-31 Mathematicians’ Evaluation of Students’ Proofs
Robert C. Moore, Department of Mathematics
The purpose of this study is to identify mathematicians’ beliefs and practices in evaluating students’ written mathematical proofs and teaching students to write proofs. Thus, this study addresses the call for research on mathematicians' pedagogical practices in advanced mathematics courses. Mathematicians were interviewed and asked to (a) evaluate proofs written by students, (b) discuss the characteristics they view as constituting a well-written proof, and (c) discuss their teaching practices with respect to proof.
P-32 Undergoing a Series of Stress-Relaxation Cycles
Boon Chai Ng, Gunnar Lovhoiden, Kalyanram Sompalli and Tanner Williams, Engineering and Computer Science Department
Di-electric electro-active polymers have potential applications as actuators and sensors. Their core characteristic is the ability to dynamically change their physical shape as a function of an electric stimulus. In this experiment, the electrical resistance of these materials are measured while the material is been subjected to a series of stress-relaxation cycles. The relation between the electrical resistance and the stress-relaxation cycles are determined and analyzed.
P-33 Development of a novel biosensor setup of combined QCM-D and FET
Hyun Kwon, Ricardo Huancaya and Thomas Zirkle, Engineering and Computer Science Department
A novel setup of a biosensor that combines an EGFET (extended gate field effect transistor) and a QCM-D (quartz crystal microbalance with dissipation) has been developed. The setup utilized a commercial, affordable MOSFET, hard wired to the QCM-D without having to undergo complicated nanofabrication procedures. This sensor was capable of detecting changes in electrochemical and thickness/flexibility during bio-molecular interactions. For the proof of concept, DNA fragments of H1N1 were detected in the setup. The sensor demonstrated in situ, label-free, and multi-modal characterization of bio-molecular interactions with high sensitivity and multiple parameters through a simple instrumentation.
P-34 Beyond the Judd-Ofelt approximation: Direct calculation of the two-photon absorption spectrum of Gd3+:LaF3
Gary W. Burdick1, C.-K. Duan2, M. F. Reid3
1Department of Physics, Andrews University, Berrien Springs, MI
2Department of Physics, University of Science and Technology of China, Hefei, China.
3Department of Physics and Astronomy and MacDiarmid Institute for Advanced Materials and Nanotechnology , University of Canterbury, Christchurch, New Zealand
Two-photon absorption (TPA) line strengths for transitions within the 4f7 configuration of Gd3+ have been determined directly using a two-configuration 4f7 and 4f65d calculation. This direct calculation takes into account the major interactions for the 4f7 and 4f65d configurations nonpertubatively. Contributions from dynamic coupling (also called ligand polarization) are found to be important in order to reconcile calculated and experimental spectra for the 8S7/2 → 6IJ transitions. Resulting calculated TPA spectra are shown to give a good reproduction of experimental line strengths and polarization dependencies.
P-35 What are gravitational waves?
Tiffany Summerscales, Department of Physics
According to Einstein's theory of general relativity, mass curves spacetime. When the distribution of mass changes, the curvature must also change and that change spreads outwards through space like the ripples on a pond. These ripples, also called gravitational waves, are very faint. Only the most catastrophic events and massive objects in the universe are capable of producing gravitational waves of measurable strength. LIGO (the Laser Interferometer Gravitational-wave Observitory) consists of three detectors, two in Hanford, WA and one in Livingston LA, built to find gravitational waves. Once these elusive spacetime ripples are caught, they will reveal important information about their sources. With gravitational waves it will be possible to watch neutron stars and black holes collide, see into the heart of a supernova, and look back to the moment of the universe's creation. The Andrews University Gravitational Wave Group (AUGWG) members are members of the LIGO Scientific Collaboration (LSC), an international group including hundreds of physicists who work on LIGO science. Currently, the AUGWG is involved in efforts to extract signals from multi-detector data and determine what information is carried by a gravitational wave.
P-36 Assessing Reliability of the PTSE Tool for the Evaluation of Clinical Instructors
Kim Coleman-Ferreira, A Lynn Millar, Brett Buda, Elliott Davis, Connor Knapp, and Yeong Park, Department of Physical Therapy
Introduction: A reliable tool to assess Clinical Instruction is essential to maximizing Physical Therapist student clinical education experiences. The purpose of this study was to analyze the reliability of the PTSE. Methods: Quasi-experimental design with test-retest. Subjects: 101 Students. Procedure: The PTSE survey sent, twice once to obtain scores which were reviewed with the CI and again for scores which were not reviewed with the CI. Statistical Analysis: Descriptive statistics were used for demographics variables; paired t-test to determine difference between first and second survey; an interclass correlation coefficient (ICC) test to determine reliability from first to second survey and frequencies and percentages for the 5 point Likert scale. Differences were considered significant if at the .05 probability. Results: 142 student surveys. For the student responses from the first to the second survey, there was a significant difference in 12 of the 29 PTSE questions, ranging from .001-.049. An ICC showed moderate to good reliability. Discussion: The significant difference found on the t-test suggests the possibility of unreliability however the ICC shows moderate- good reliability. Conclusion: Based on the ICC and the small difference in scores the statistical analysis suggests that the PTSE is a reliable tool for CI evaluation.
P-37 The Validity and Reliability of the Incontinence Impact Questionnaire and SF-36 for Stress Urinary Incontinence in Bangladesh Women Post Caesarean Section and Vaginal Delivery
Lori M. Walton*, Center for Rehabilitation of the Paralyzed, Dhaka-Savar, Bangladesh
*Currently: Department of Physical Therapy, Andrews University
Purpose: To determine the validity and reliability of IIQ-7 and SF-36 for use in Bangladeshi women. Subjects: (n=20) 20 women between the age of 18-54, living in Bangladesh and identified as having one or more births, either caesarean section or vaginal delivery within the last three years. Materials and Methods: Translation of the IIQ-7 and SF-36 was obtained by a certified Bengali language translator. IIQ-7 and SF-36 Bengali version were completed by 20 Bangladeshi women. Results: Test-retest reliability (ICC=.94-1.0) and internal consistency of both IIQ-7 and SF-36 (Cronbach’s alpha = .94-.99) were good. Conclusion: The Bengali translated SF-36 and IIQ-7 demonstrated good test-retest reliability, internal consistency, construct, concurrent, and convergent validity.
P-38 Intake of convenience foods by teens in Berrien Springs public and Adventist schools
Lillian-Marie Drew* and Peter Pribis, Department of Nutrition
*MS Student in Nutrition and Wellness
It is observed that the changing dietary patterns of American families and the growing number of convenient food products available both in frozen sections of groceries and fast food centers greatly influence what children and teens eat. Exposure to fast foods and other convenience foods is associated with intake of meat products and increased intake of sodium and fats among white and blackgirls. Previous studies on Seventh-day Adventist (SDA) and non-SDA schoolchildren showed that differences in eating patterns among schoolchildren showed tendencies for those who ate significantly more plant-based foods and less animal proteins to have lower BMI. We have explored the intake of convenience foods in Berrien Springs public and Seventh-day Adventist schools.
P-39 Exposure to occupational health hazards among Zambian workers: Results from the 2009 National Labour Force Survey
Seter Siziya1, Emmanuel Rudatsikira2, Aggrey Mweemba3, George Rachiotis4, Duncan Mugala1, Kasonde Bowa1, Adamson S. Muula5
1School of Medicine, The Copperbelt University, Ndola, Zambia
2School of Health Professions, Andrews University, Berrien Springs, MI, USA
3Department of Internal Medicine, University Teaching Hospital, Lusaka, Zambia
4Department of Hygiene and Epidemiology, Medical Faculty, University of Thessaly, Larissa, Greece
5Department of Community Health, College of Medicine, University of Malawi, Blantyre, Malawi
Data on occupational safety and health are scant in the southern Africa region. Hence the negative impact of poor working conditions is unappreciated and the scientific basis for interventions and policy formulation is lacking. The objective of the study was to determine the prevalence and associated factors for occupational health hazards exposure in Zambia. We used data collected in the 2009 National Labour Force Survey. Unadjusted odds ratios (OR) and adjusted odds ratios (AOR) and their 95% confidence intervals (CI) were used to measure magnitudes of associations. Results from this study indicate Zambian workers are exposed to a broad range of occupational health hazards. The results of the present study could be useful for the formulation of a multi-sectoral approach aiming at the prevention and control of occupational hazards.