Digital Commons Network^™

Mgrre_Thinsections_Moc-14_87, Mgrre

Thin Sections

No abstract provided.

Mgrre_Thinsections_Moc-14_97, Mgrre

Thin Sections

No abstract provided.

Mgrre_Thinsections_Moc-14_91, Mgrre

Thin Sections

No abstract provided.

Mgrre_Thinsections_Moc-16_15, Mgrre

Thin Sections

No abstract provided.

Mgrre_Thinsections_Moc-16_7, Mgrre

Thin Sections

No abstract provided.

Mgrre_Thinsections_Moc-16_24, Mgrre

Thin Sections

No abstract provided.

Mgrre_Thinsections_Moc-17_1, Mgrre

Thin Sections

No abstract provided.

Mgrre_Thinsections_Mgrre-115_7, Mgrre

Thin Sections

No abstract provided.

Mgrre_Thinsections_Moc-08_81, Mgrre

Thin Sections

No abstract provided.

Mgrre_Thinsections_Moc-14_77, Mgrre

Thin Sections

No abstract provided.

Velocity Map Images Of Desorbing Oxygen From Sub-Surface States Of Rh(111), Arved C. Dorst, Friedrich Güthoff, Daniel Schauermann, Alec M. Wodtke, Daniel Killelea, Tim Schäfer

Chemistry: Faculty Publications and Other Works

We combine velocity map imaging (VMI) with temperature-programmed desorption (TPD) experiments to record the angular-resolved velocity distributions of recombinatively-desorbing oxygen from Rh(111). We assign the velocity distributions to desorption from specific surface and sub-surface states by matching the recorded distributions to the desorption temperature. These results provide insight into the recombinative desorption mechanisms and the availability of oxygen for surface-catalyzed reactions.

Testing Modified Gravity Theories With Numerical Solutions Of The External Field Effect In Rotationally Supported Galaxies, Stacy S. Mcgaugh

Faculty Scholarship

The strong equivalence principle is violated by gravity theories of Milgromian dynamics [modified Newtonian dynamics (MOND)] through the action of the external field effect. We test two different Lagrangian theories Aquadratic-Lagrangian (AQUAL) and quasilinear MOND (QUMOND) based on their numerical solutions of the external field effect, by comparing two independent estimates of the mean external field strength of the nearby universe: a theory-deduced value from fitting the outer rotation curves of 114 galaxies and an empirical value from the large-scale distribution of cosmic baryons. The AQUAL-deduced external field strength from rotation curves agrees with that from the large-scale cosmic environment, …

Strengthening The Southern Nevada Workforce Pipeline, Katie M. Gilbertson

Policy Briefs and Reports

This report analyzes the Southern Nevada employment ecosystem by utilizing occupational clusters recognized by the U.S. Department of Labor. The first section examines occupations in the tourism industry using three occupational clusters: hospitality and leisure; arts, audio/video technology and communications; and the transportation, distribution, and logistics. Next, this report utilizes the Las Vegas Global Economic Alliance’s 2022 Workforce Blueprint to identify the top 15 in-demand occupations for Southern Nevada and occupational clusters. A case study of the MGM College Opportunity Program (COP) is presented to demonstrate an existing workforce training program that promotes upward mobility of leisure and hospitality employees …

Characteristics Of Kelvin-Helmholtz Waves As Observed By The Mms From September 2015 To June 2017, Katariina Nykyri, Xuanye Ma, Rachel C. Rice

Publications

The Magnetospheric Multiscale (MMS) mission has presented a new opportunity to study the fine scale structures and phenomena of Earth’s magnetosphere, including cross scale processes associated with the Kelvin-Helmholtz Instability (KHI). We present an overview of 19 MMS observations of the KHI from September 2015 to June 2017. Unitless growth rates and unstable solid angles for each of the 19 events were calculated using 5 techniques to automatically detect plasma regions on either side of the magnetopause boundary. There was no apparent correlation between solar wind conditions during the KHI and its growth rate and unstable solid angle, though we …

Response Of Planetary Waves And Tides To The 2019 Southern Hemisphere Ssw And Q2dw Enhancement In Jan-Feb 2020 Observed By Condor Meteor Radar In Chile And Adelaide Meteor Radar In Australia, Alan Liu, Zishun Qiao, Iain Reid, Javier Fuentes, Chris Adami

Publications

A new multi-static meteor radar (CONDOR) has recently been installed in northern Chile. This CONDOR meteor radar (30.3°S, 70.7°W) and the Adelaide meteor radar (35°S, 138°E) have provided longitudinally spaced observations of the mean winds, tides and planetary waves of the PW-tides interaction cases we present here. We have observed a Quasi-6-Day Wave (Q6DW) enhancement in MLT winds at the middle latitudes (30.3°S, 35°S) during the unusual minor South Hemisphere SSW 2019 by the ground-based meteor radars. Tidal analysis also indicates modulation of the Q6DW w/ amplitude ~15 [m/s] and diurnal tides w/ amplitude ~60 [m/s]. Another case we present …

An Exploration Of Recent Intelligent Image Analysis Techniques For Visual Pavement Surface Condition Assessment., Waqar Shahid Qureshi, Ibrahim Hassan Syed, Susan Mckeever, David Power, Brian Mulry, Kieran Feighan, Dympna O'Sullivan

Articles

Road pavement condition assessment is essential for maintenance, asset management, and budgeting for pavement infrastructure. Countries allocate a substantial annual budget to maintain and improve local, regional, and national highways. Pavement condition is assessed by measuring several pavement characteristics such as roughness, surface skid resistance, pavement strength, deflection, and visual surface distresses. Visual inspection identifies and quantifies surface distresses, and the condition is assessed using standard rating scales. This paper critically analyzes the research trends in the academic literature, professional practices and current commercial solutions for surface condition ratings by civil authorities. We observe that various surface condition rating systems …

From Model Organisms To Humans, The Opportunity For More Rigor In Methodologic And Statistical Analysis, Design, And Interpretation Of Aging And Senescence Research, Daniella E Chusyd, Steven N Austad, Andrew W Brown, Xiwei Chen, Stephanie L Dickinson, Keisuke Ejima, David Fluharty, Lilian Golzarri-Arroyo, Richard Holden, Yasaman Jamshidi-Naeini, Doug Landsittel, Stella Lartey, Edward Mannix, Colby J Vorland, David B Allison

Children’s Nutrition Research Center Staff Publications

This review identifies frequent design and analysis errors in aging and senescence research and discusses best practices in study design, statistical methods, analyses, and interpretation. Recommendations are offered for how to avoid these problems. The following issues are addressed: (a) errors in randomization, (b) errors related to testing within-group instead of between-group differences, (c) failing to account for clustering, (d) failing to consider interference effects, (e) standardizing metrics of effect size, (f) maximum life-span testing, (g) testing for effects beyond the mean, (h) tests for power and sample size, (i) compression of morbidity versus survival curve squaring, and (j) other …

Multi-Method Investigation Of Factors Influencing Amyloid Onset And Impairment In Three Cohorts, Tobey J Betthauser, Dean F Wong, Et Al.

2020-Current year OA Pubs

Alzheimer's disease biomarkers are becoming increasingly important for characterizing the longitudinal course of disease, predicting the timing of clinical and cognitive symptoms, and for recruitment and treatment monitoring in clinical trials. In this work, we develop and evaluate three methods for modelling the longitudinal course of amyloid accumulation in three cohorts using amyloid PET imaging. We then use these novel approaches to investigate factors that influence the timing of amyloid onset and the timing from amyloid onset to impairment onset in the Alzheimer's disease continuum. Data were acquired from the Alzheimer's Disease Neuroimaging Initiative (ADNI), the Baltimore Longitudinal Study of …

Implementing Just Climate Adaptation Policy: An Analysis Of Recognition, Framing, And Advocacy Coalitions In Boston, U.S.A., Jeffrey T. Malloy, Catherine Ashcraft, Paul Kirshen, Thomas G. Safford, Semra Aytur, Shannon H. Rogers

Faculty Publications

Cities face intersectional challenges implementing climate adaptation policy. This research contributes to scholarship dedicated to understanding how policy implementation affects socially vulnerable groups, with the overarching goal of promoting justice and equity in climate policy implementation. We apply a novel framework that integrates social justice theory and the advocacy coalition framework to incrementally assess just climate adaptation in Boston, Massachusetts in the United States. Boston made an ambitious commitment to address equity as part of its climate planning and implementation efforts. In this paper, we evaluate the first implementation stage over the period 2016–2019 during which Boston developed coastal resilience …

Sub-Recent Microfauna Within Allogenic Sediments At The Bottom Of A Deep Cave, Njemica (Biokovo Mt., Croatia), Tomislav Kurečić, Valentina Hajek Tadesse, Lara Wacha, Marija Horvat, Nina Trinajstić, Ivan Mišur

International Journal of Speleology

Clastic sediments deposited at the bottom of the vertical, nearly 1000 m deep Njemica Cave (Biokovo Mountain, Croatia) were analysed. Owing to the vertical morphology of the cave, the occurrences of clastic sediments are sparse. Small, up to decimetre-thick, undisturbed sediment accumulations situated near the siphon lake revealed interesting palaeontological and mineralogical data. These data are used as a useful proxy for discussing depositional processes, the provenance of the sediments and paleo-habitats of the subterranean fauna.

The sub-recent assemblages of ostracods were discovered within the sediment, and they were shown to be correlative to the known endemic species in the …

The Effect Of A Training Program Based On Suchman Inquiry Model On The Development Of Reflective Thinking Skills Of Science Teachers In Jordan أثر برنامج تدريبي مستند إلى أُنموذج سكمان Suchman في تنمية مهارات التفكير التأملي لدى معلمي العلوم في الأردن, Khawla Yousef Al-Atram, Prof. Hani A. Weshah

Jordanian Educational Journal

Abstract:

This study aimed at investigating the effect of a training program based on Suchman inquiry model on the development of reflective thinking skills among science teachers in Jordan. The study used the quasi-experimental approach and was applied on a sample of (60) science teachers from public schools at Al-Muwaqqar educational directorate, who were selected purposefully and divided into groups, experimental group (n=30) and a control group (n=30). The experimental group received training based on Suchman inquiry model for 3 weeks while the control group received conventional training. A scale of reflective thinking was applied on both groups after ensuring …

The Effect Of Using The Model Of Creative Problem Solving In Mathematics In Improving Habits Of Mind Among Ninth Grade Student أثر استخدام أُنموذج الحل الإبداعي للمشكلات الرياضية في تحسين عادات العقل لدى طلبة الصف التاسع الأساسي, Emtenan Suliman Wahibi, Prof. Ali Mohammad Al-Zoubi, Prof. Tariq Yousef Jawarneh

Jordanian Educational Journal

Abstract:

This study aimed to reveal the effect of using the model of creative problem solving in mathematics in improving habits of mind among ninth grade students. To achieve the objectives of the study, a test was prepared on the habits of mind. The sample was (60) female students distributed equally into two experimental and control groups before and after the experiment utilizing quasi-experimental approach. The results of the study showed that there were statistically significant differences in the means of students' grades in the habits of mind test in the experimental and control groups attributed the method of teaching …

Effectiveness Of A Program Based On Stem In Developing Critical Thinking Skills In Mathematics Among Eleventh Grade Scientific Students In Gaza, Mohammed Asqule, Rana Ziada

An-Najah University Journal for Research - B (Humanities)

The study aimed to investigate the effectiveness of a program based on STEM approach in developing critical thinking skills in Mathematics for the students in GAZA. To achieve the study objectives, the researchers adopted the experimental approach. A program based on STEM, teacher guide has been prepared. To verify the effectiveness of the program, the study tool was a critical thinking skills test. This test has undergone pre and post application on a sample consisted of a group of (86) female students selected from Al-Zahraa Secondary School. The study results revealed that there were statistically significant differences at the level …

The Sensitivity Of Meteorological Dynamics To The Variability In Catchment Characteristics, Shimelash Molla Kassaye, Tsegaye Tadesse, Getachew Tegegne, Kindie Engdaw Tadesse

National Drought Mitigation Center: Faculty Publications

Evaluating meteorological dynamics is a challenging task due to the variability in hydroclimatic settings. This study is designed to assess the sensitivity of precipitation and temperature dynamics to catchment variability. The effects of catchment size, land use/cover change, and elevation differences on precipitation and temperature variability were considered to achieve the study objective. The variability in meteorological parameters to the catchment characteristics was determined using the coefficient of variation on the climate data tool (CDT). A land use/cover change and terrain analysis was performed on Google Earth Engine (GEE) and ArcGIS. In addition, a correlation analysis was performed to identify …

Are We Ovary-Acting? All Visuospatial Abilities May Not Be Equally Affected Throughout The Menstrual Cycle., Caroline G. Haynes, Audrey N. Wade

Science University Research Symposium (SURS)

Are we ovary-acting? All visuospatial abilities may not be equally affected throughout the menstrual cycle.

Department of Psychological Sciences & Neuroscience, Belmont University, Nashville, TN

Visuospatial skills pertain to the ability to conceptualize and comprehend visual representations of objects and the spatial relationships among objects. They are integral for the proper functioning of other cognitive systems such as memory, attention, and reasoning (Kaufman, 2007). Sex hormones are one of many factors reported to affect visuospatial processing, with estrogen specially being associated with poor performance on visuospatial tasks in females (Hausmann, 2000). The current study investigated performance differences on three visuospatial …

Mgrre_Thinsections_05_A_92, Mgrre

Thin Sections

No abstract provided.

Investigating Small-Group Cognitive Engagement In General Chemistry Learning Activities Using Qualitative Content Analysis And The Icap Framework, Safaa Y. El-Mansy, Jack Barbera, Alissa J. Hartig

Chemistry Faculty Publications and Presentations

The level of students’ engagement during active learning activities conducted in small groups is important to understanding the effectiveness of these activities. The Interactive–Constructive–Active–Passive (ICAP) framework is a way to determine the cognitive engagement of these groups by analyzing the conversations that occur while student groups work on an activity. This study used qualitative content analysis and ICAP to investigate cognitive engagement during group activities in a General Chemistry course at the question level, a finer grain size than previously studied. The analysis determined the expected engagement based on question design and the observed engagement based on group conversations. Comparisons …

Cold Atoms In Space: Community Workshop Summary And Proposed Road-Map, Iván Alonso, Cristiano Alpigiani, Brett David Altschul, Henrique Araújo, Gianluigi Arduini, Jan Arlt, Leonardo Badurina, Antun Balaž, Satvika Bandarupally, Barry C. Barish, Michele Barone, Michele Barsanti, Steven Bass, Angelo Bassi, Baptiste Battelier, Charles F. A. Baynham, Quentin Beaufils, Aleksandar Belić, Joel Bergé, Jose Bernabeu, Et. Al.

Faculty Publications

We summarise the discussions at a virtual Community Workshop on Cold Atoms in Space concerning the status of cold atom technologies, the prospective scientific and societal opportunities offered by their deployment in space, and the developments needed before cold atoms could be operated in space. The cold atom technologies discussed include atomic clocks, quantum gravimeters and accelerometers, and atom interferometers. Prospective applications include metrology, geodesy and measurement of terrestrial mass change due to, e.g., climate change, and fundamental science experiments such as tests of the equivalence principle, searches for dark matter, measurements of gravitational waves and tests of quantum mechanics. …

Teaching Competency In The Digital Era In Indonesia, Malaysia And The Philippines, Rashid Ating

Research Publications (2021 to 2025)

This study investigated the challenges of teaching in the digital environment and identified digital competency among lecturers in higher learning institutions in the digital era. The survey was carried out from April to September 2022 with 155 valid responses among 200 lecturers, 77.5% response rate from private and public higher learning institutions from Indonesia, Malaysia, and the Philippines. PLS-SEM was used to analyse the survey results and hypothesis testing was conducted through bootstrapping. Among the seven hypotheses proposed, six were accepted and one was rejected, which was the development of digital learning resources towards competency teaching in the digital era.

Accurately Grasp The New Features Of Cybersecurity Technology Development And Fully Promote The Modernization Of National Security System And Capabilities, Dengguo Feng

Bulletin of Chinese Academy of Sciences (Chinese Version)

No abstract provided.