Digital Commons Network^™

Hydraulic Conductivity Imaging From 3-D Transient Hydraulic Tomography At Several Pumping/Observation Densities, Michael Cardiff, Warren Barrash, Peter K. Kitanidis

CGISS Publications and Presentations

3-D Hydraulic tomography (3-D HT) is a method for aquifer characterization whereby the 3-D spatial distribution of aquifer flow parameters (primarily hydraulic conductivity, K) is estimated by joint inversion of head change data from multiple partially penetrating pumping tests. While performance of 3-D HT has been studied extensively in numerical experiments, few field studies have demonstrated the real-world performance of 3-D HT. Here we report on a 3-D transient hydraulic tomography (3-D THT) field experiment at the Boise Hydrogeophysical Research Site which is different from prior approaches in that it represents a “baseline” analysis of 3-D THT performance using …

2014 Weed Control Recommendations For Kentucky Grain Crops, Jonathan D. Green, James R. Martin

Agriculture and Natural Resources Publications

The use of herbicides suggested in this publication is based on research at the Kentucky Agricultural Experiment Station and elsewhere. We have given what we believe to be the most effective herbicides, with the most suitable rates and times of application. Use of trade or brand names in this publication does not imply approval of the product to the exclusion of others which may be of similar or suitable composition.

Herbicide registrations and labels are constantly being revised and changed; therefore, herbicides recommended in this publication were registered for the prescribed uses when the publication was printed. If the registration …

Assessment Of Mathematical Modelling Tasks, K.E. Leong

Research Publications (2011 to 2015)

Mathematics modelling is now one of the areas that is important in the mathematics education arena. The essence of a modelling problem is constructing a mathematical model for the situation at hand. Assessing mathematical is a field that requires more study. Rubrics that assess the modelling process are a good beginning in finding suitable methods of assessing mathematical modelling. This article suggests an instrument for assessing mathematical modelling tasks. The instrument is a scoring rubric that is based on the modelling process.

Assessing Preservice Secondary School Mathematics Teachers' Knowledge Of Area, W. Thiam Yew, S.N.A. Syed Zamri, L. Hooi Lian, C. Cheng Meng

Research Publications (2011 to 2015)

The purpose of this paper is to assess preservice secondary school mathematics teachers’ knowledge of area. Clinical interview technique was employed to collect the data. Subjects of this study consisted of eight preservice secondary school mathematics teachers enrolled in a Mathematics Teaching Methods course at a public university in Peninsula Malaysia. They were selected based on their majors (mathematics, biology, chemistry, physics) and minors (mathematics, biology, chemistry, physics). This paper presents the analysis of the responses of the subjects related to a particular task, namely notion of area. The finding suggests that five of the preservice teachers in this study …

Effectiveness Of Using Geogebra Software On Students’ Understanding Of The Concept Of Circles, P. Shadaan, K.E. Leong

Research Publications (2011 to 2015)

The use of technology in the pedagogical process is growing at phenomenal rate, due to the vast availability of gadgets. Further, it is a challenging task for teachers to engage their students without technology integration, due to its popularity amongst their students. As a result, educationists see the urgent need of technology integration in students’ mathematical activities. Therefore, the purpose of this experimental study was to identify whether GeoGebra enhances students’ understanding of the concept of circles. Fifty-three grade nine students participated in this study and students were provided with six activities using GeoGebra to study the concept of circles. …

Exploring Students’ Conceptual Understanding Of Parallelograms Based On Geogebra, M. Delaviz, K.E. Leong

Research Publications (2011 to 2015)

This study used a mixed mode approach and aimed to explore students’ conceptual understanding in geometry using GeoGebra. The focus of this study was on the concept of parallelograms. This study was conducted in an Iranian governmental boys’ school using ten grade two lower secondary school students as participants. These students were randomly divided into two groups. The first group underwent the lesson using the GeoGebra whereas the other group was taught using the traditional approach. This research findings focused more on the qualitative section and less on the quantitative section in which detailed observation were executed as well as …

Hots: Evidence From Timss 2011 & Its Implication Towards Stem, K. Jayarajah, R. Mohd Saat, R.A. Abdul Rauf

Research Publications (2011 to 2015)

Science, Technology, Engineering and Mathematics (STEM) education aims to prepare all students with higher order thinking skills to succeed in the 21st century. However, based on The Trends in International Mathematics and Science Study (TIMSS) in 2011, Malaysian students are still weak in higher order thinking skills (HOTS) not only in answering science questions but also in solving science problems. This research was carried out through a microanalysis of TIMSS 2011 in the science assessment. The study found out that Malaysia performed lower than the international average benchmarking in all the cognitive domains except for reasoning in Biology. In fact …

Teaching And Learning Calculus Using Ti-Nspire, M.A.S. Parrot, K.E. Leong

Research Publications (2011 to 2015)

Failure to understand abstract concept among students might lead to misconception in understanding Calculus. Using instructional activities in discovering mathematical concepts by integrating technology may be one learning style to suit their needs. This study explored the concept of Calculus by using TI-Nspire. It was conducted by using a case study research design. The participants of this study were three Form Five students from a mixed ability classroom of a public school in Selangor. Instructional activities were designed on teaching and learning of the component Calculus in SPM Additional Mathematics. Two selected students will be interviewed based on their responses …

The Development Of The ‘Self-Directed Learning Readiness Scale In Biology’ (Sdlrsbio) For Pre-University Biology Students, K. Siew Wai, E.G.S. Daniel

Research Publications (2011 to 2015)

In past research, the measurement of students’ SDL readiness focused on self-motivation, self-management, and self-monitoring. These measurements were found to be too general to conclude one as a self-directed learner. Self-directedness should be specific for each subject area. This paper will discuss the pilot study of a larger research, where the SDLRSbio was developed using the Delphi technique. Specific biology laboratory skills readiness, experimental skills readiness, and data analysis and interpretation skills readiness were embedded in the SDLRSbio to ensure specificity in measuring biology students’ SDL readiness. The SDLRSbio developed consisted of 46 items in a 5 point Likert-scale. This …

Understanding Students’ Technical Skills During Transition From Primary To Secondary School, H. Mohd Fadzil, R. Mohd Saat

Research Publications (2011 to 2015)

Students lack exposure in ‘hands-on’ activities at primary school lead to insufficient manipulative skills and they may carry this problem with them to secondary school. Although most of the pupils are able to adapt to their new learning environment, some found transition difficult and problematic. Thus, to confront these issues, an in-depth study was proposed. This study resulted from a longitudinal study which employed a qualitative research paradigm. The research involved 10 primary school students (Year Six) and they were interviewed again in secondary school (Form One). Students’ ability in handling thermometer, measuring cylinder, Bunsen burner and microscope were observed …

Using Spreadsheet To Teach Limit Among College Students, C. Kok Fui, S.N.A. Syed Zamri

Research Publications (2011 to 2015)

The commandment of e-N definition is essential in order to learn the concept of limit. In Malaysia, students will only learn this definition in the tertiary level due to its complicated structure. Although technology component was introduced in secondary schools in year 2006, e-N definition was still not part of the syllabus as if learning of this definition was still impossible to secondary students. Furthermore, because of incorrect notions of limit perceived at the secondary level, students find learning e-N definition to be difficult in the tertiary level. These have motivated the researcher to create a technology-aided module that is …

Visualizing Fractions With Geogebra, N. Tambi, K.E. Leong

Research Publications (2011 to 2015)

The purpose of this study is to investigate the visualization of fractions using GeoGebra. Some studies had shown that students have poor conceptualization in visualizing fractions. Using GeoGebra enhances the understanding of fractions. GeoGebra provides a platform to construct fractions using rectangles. Students are able to understand the meaning of numerators over denominators symbols. Quasi experiment is used to compare the achievement of two groups of Year Four primary school students. Results indicate that there is a significant difference between the two groups. The findings are useful to propose an alternative way of learning fractions as well as assisting students …

Access Control In And For The Real World, Sara Sinclair

Dartmouth College Ph.D Dissertations

Access control is a core component of any information-security strategy. Researchers have spent tremendous energy over the past forty years defining abstract access-control models and proving various properties about them. However, surprisingly little attention has been paid to how well these models work in real socio-technical systems (i.e., real human organizations). This dissertation describes the results of two qualitative studies (involving 52 participants from four companies, drawn from the financial, software, and healthcare sectors) and observes that the current practice of access control is dysfunctional at best. It diagnoses the broken assumptions that are at the heart of this dysfunction, …

Rti Characteristics Commonly Implemented In High Performing Middle Schools, Mark Joseph Fitch

Dissertations

The Individuals with Disabilities Act of 2004 allowed schools to use a Response to Intervention (RtI) model as opposed to the discrepancy model to qualify students as learning disabled. The incorporation of the RtI model provided earlier interventions for students and reduced avoidance of special services and false diagnosis. With the success of the RtI model at the elementary level, middle schools attempt to implement the program with varying success. In this study, middle school principals were surveyed to determine their respective building’s current level of implementation in regard to RtI. The building’s implementation scores were compared to academic achievement …

Center For Renewable Energy Newsletter, November 2013, Illinois State University, Center For Renewable Energy

Center for Renewable Energy Newsletter

No abstract provided.

Behavioral Modeling Of The Individual’S Acceptance And Use Of Internet In Bangladesh: An Analysis Using An Integrated Approach, Md Shah Azam, Mohammed Quaddus, Nasrin Lubna

Journal of International Technology and Information Management

This study attempts to examine individuals’ behavior in the adoption and usage of the Internet for accomplishing various transactions and communication in Bangladesh. A descriptive research design is administered to ascertain the joint impact of the study constructs. A combination of AMOS 18 and PLS graph has been used for structural equation modeling with a cross-sectional dataset of 239 individuals in Bangladesh collected through a questionnaire survey. The proposed model was assessed with two step procedure after scrutiny and correction for non response and subjective response bias. The psychometric properties of the model, convergent and discriminant validity were assessed through …

Does The Presence Of A Learning Disability Elicit A Stigmatization?, Kelsey Lisle, T. Joel Wade

Faculty Journal Articles

Aims: To determine whether or not a Learning Disability(LD) label leads to stigmatization. Study Design: This research used a 2(sex of participant) x 2(LD label)x 2 (Sex of stimulus person) factorial design. Place and Duration of Study: Bucknell University, between October 2010 and April 2011. Methodology: Sample: We included 200 participants (137 women and 63 men, ranging in age from 18 – 75 years, M = 26.41. Participants rated the stimulus individual on 27 personality traits, 8 Life success measures, and the Big-5 personality dimensions. Also, participants completed a Social Desirability measure. Results: A MANOVA revealed a …

G Forces: Gideon V. Wainwright And Matthew Adler's Move Beyond Cost-Benefit Analysis, Janet Moore

Seattle Journal for Social Justice

No abstract provided.

2114-2251_Nir_Gnirs, Michael C. Liu

Publications and Research

No abstract provided.

Characterization Of Planar Wave Guides By Angle-Dependent Excitation Of Guided Modes, Edward D. Lunde

Physics

In this project a high resolution rotation stage was used to measure the angle of coupling of light into planar waveguide modes. Control of the stage and acquisition of light intensity data was done using the commercially available programming environment, MATLAB. Reliable, repeatable excitation of modes was done using prism coupling. We also investigated coupling using a surface grating on the waveguide.

Moving Difference (Mdiff) Non-Adiabatic Rapid Sweep (Nars) Epr Of Copper(Ii), James S. Hyde, Brian Bennett, Aaron W. Kittell, Jason M. Kowalski, Jason Walter Sidabras

Physics Faculty Research and Publications

Non-adiabatic rapid sweep (NARS) EPR spectroscopy has been introduced for application to nitroxide-labeled biological samples (Kittell et al., 2011). Displays are pure absorption, and are built up by acquiring data in spectral segments that are concatenated. In this paper we extend the method to frozen solutions of copper-imidazole, a square planar copper complex with four in-plane nitrogen ligands. Pure absorption spectra are created from concatenation of 170 5-gauss segments spanning 850 G at 1.9 GHz. These spectra, however, are not directly useful since nitrogen superhyperfine couplings are barely visible. Application of the moving difference (MDIFF) algorithm to the digitized NARS …

Tracking Transmission Of Apicomplexan Symbionts In Diverse Caribbean Corals, Nathan L. Kirk, Raphael Ritson-Williams, Mary Alice Coffroth, Margaret W. Miller, Nicole D. Fogarty, Scott R. Santos

Marine & Environmental Sciences Faculty Articles

Symbionts in each generation are transmitted to new host individuals either vertically (parent to offspring), horizontally (from exogenous sources), or a combination of both. Scleractinian corals make an excellent study system for understanding patterns of symbiont transmission since they harbor diverse symbionts and possess distinct reproductive modes of either internal brooding or external broadcast spawning that generally correlate with vertical or horizontal transmission, respectively. Here, we focused on the under-recognized, but apparently widespread, coral-associated apicomplexans (Protista: Alveolata) to determine if symbiont transmission depends on host reproductive mode. Specifically, a PCR-based assay was utilized towards identifying whether planula larvae and reproductive …

Re-Examining The Electronic Structure Of Germanium: A First-Principle Study, C. E. Ekuma, M. Jarrell, J. Moreno, D. Bagayoko

Faculty Publications

We report results from an efficient, ab initio method for self-consistent calculations of electronic and structural properties of Ge. Our non-relativistic calculations employed a GGA potential and LCAO formalism. The distinctive feature of our computations stem from the use of Bagayoko-Zhao-Williams-Ekuma- Franklin method. Our results are in agreement with experimental ones where the latter are available. In particular, our theoretical, indirect band gap (EgΓ-L) of 0.65 eV, at the experimental lattice constant of 5.66 Å, is in excellent agreement with experiment. Our predicted, equilibrium lattice constant is 5.63 Å, with corresponding EgΓ-L of 0.65 eV and a bulk modulus of …

C. S. Lewis: The Art And Power Of Mythopoeia, Megan Joy Rials

Honors Capstones

No abstract provided.

Detection And Phylogenetic Analysis Of The Membrane-Bound Nitrate Reductase (Nar) In Pure Cultures And Microbial Communities From Deep-Sea Hydrothermal Vents, Ileana Pérez-Rodríguez, Kenneth A. Bohnert, Mariola Cuebas, Ramaydalis Keddis, Costantino Vetriani

Faculty Publications

Over the past few years the relevance of nitrate respiration in microorganisms from deep-sea hydrothermal vents has become evident. In this study, we surveyed the membrane-bound nitrate reductase (Nar) encoding gene in three different deep-sea vent microbial communities from the East Pacific Rise and the Mid-Atlantic Ridge. Additionally, we tested pure cultures of vent strains for their ability to reduce nitrate and for the presence of the NarG-encoding gene in their genomes. By using the narG gene as a diagnostic marker for nitrate-reducing bacteria, we showed that nitrate reductases related to Gammaproteobacteria of the genus Marinobacter were numerically prevalent in …

Geometric Satake, Springer Correspondence And Small Representations, Pramod N. Achar, Anthony Henderson

Faculty Publications

For a simply-connected simple algebraic group G over ℂ, we exhibit a subvariety of its affine Grassmannian that is closely related to the nilpotent cone of G, generalizing a well-known fact about GL . Using this variety, we construct a sheaf-theoretic functor that, when combined with the geometric Satake equivalence and the Springer correspondence, leads to a geometric explanation for a number of known facts (mostly due to Broer and Reeder) about small representations of the dual group. © 2013 Springer Basel. n

About The Authors

Seattle Journal for Social Justice

No abstract provided.

Generalized Modified Ratio Estimator For Estimation Of Finite Population Mean, Jambulingam Subramani

Journal of Modern Applied Statistical Methods

A generalized modified ratio estimator is proposed for estimating the population mean using the known population parameters. It is shown that the simple random sampling without replacement sample mean, the usual ratio estimator, the linear regression estimator and all the existing modified ratio estimators are the particular cases of the proposed estimator. The bias and the mean squared error of the proposed estimator are derived and are compared with that of existing estimators. The conditions for which the proposed estimator performs better than the existing estimators are also derived. The performance of the proposed estimator is assessed with that of …

Test For Intraclass Correlation Coefficient Under Unequal Family Sizes, Madhusudan Bhandary, Koji Fujiwara

Journal of Modern Applied Statistical Methods

Three tests are proposed based on F-distribution, Likelihood Ratio Test (LRT) and large sample Z-test for intraclass correlation coefficient under unequal family sizes based on a single multinormal sample. It has been found that the test based on F-distribution consistently and reliably produces results superior to those of Likelihood Ratio Test (LRT) and large sample Z-test in terms of size for various combinations of intraclass correlation coefficient values. The power of this test based on F-distribution is competitive with the power of the LRT and the power of Z-test is slightly better than the powers of F-test and LRT when …

Variables Sampling Plan For Correlated Data, J. R. Singh, R. Sankle, M. Ahmad Khanday

Journal of Modern Applied Statistical Methods

The sampling plan for the mean for correlated data is studied. The Operating Characteristic (OC) of the variable sampling plan for mean for correlated data are calculated and compared with the OC of known σ case.