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Physical Sciences and Mathematics Commons™
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- BINDING-ENERGIES (2)
- CATION-PI INTERACTIONS (2)
- DECKER SANDWICH (2)
- GAS-PHASE (2)
- IONIZATION ENERGIES (2)
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- RADIATIVE ASSOCIATION KINETICS (2)
- SANDWICH CLUSTERS (2)
- 260-NM ABSORPTION-SPECTRUM (1)
- ACETONITRILE CLUSTERS (1)
- ANISOTROPY (1)
- APPROXIMATION (1)
- Academic libraries (1)
- Algae; asteroids; astrobiology; asteroids; ecology; Mars; meteorites (1)
- BARRIER (1)
- CHARGE-TRANSFER (1)
- COMPLEXES (1)
- DENSITY (1)
- DIMERS (1)
- DIP INFRARED-SPECTROSCOPY (1)
- EFFECTIVE CORE POTENTIALS (1)
- FORCES (1)
- HOMOGENEOUS NUCLEATION (1)
- IRON CLUSTER (1)
- Interface Design (1)
- LIQUID ACETONITRILE (1)
- MAGNETIZATION (1)
- METAL-BENZENE COMPLEXES (1)
- MOLECULAR CALCULATIONS (1)
- MOLECULAR CLUSTERS (1)
- N N=2-8 CLUSTERS; ELECTRONIC-STRUCTURE; CO-N; TRANSITION; COBALT; APPROXIMATION; MOLECULES (1)
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Articles 1 - 29 of 29
Full-Text Articles in Physical Sciences and Mathematics
Planetary Bioresources And Astroecology 1. Planetary Microcosm Bioassays Of Martian And Carbonaceous Chondrite Materials: Nutrients, Electrolyte Solutions, And Algal And Plant Responses, Michael Noah Mautner
Planetary Bioresources And Astroecology 1. Planetary Microcosm Bioassays Of Martian And Carbonaceous Chondrite Materials: Nutrients, Electrolyte Solutions, And Algal And Plant Responses, Michael Noah Mautner
Chemistry Publications
The biological fertilities of planetary materials can be assessed using microcosms based on materials in martian and carbonaceous chondrite meteorites. Their biological fertilities are rated based on soluble electrolyte nutrients, on the growth of mesophile and cold-tolerant algae, and of plant tissue cultures. The Murchison CM2 carbonaceous chondrite meteorite and DaG 476 martian shergottite contain high levels of water-extractable Ca, Mg, and SO4–S. The martian meteorites DaG 476 and EETA 79001 also contain high levels of extractable nutrients NO3–N (0.013–0.017 g kg−1) and PO4–P (0.019–0.046 g kg−1). The yields of most of the water-extractable …
The Science Studio – A Workshop Approach To Introductory Physical Science, S. R. Chaudhury
The Science Studio – A Workshop Approach To Introductory Physical Science, S. R. Chaudhury
Journal of Mathematics and Science: Collaborative Explorations
This paper describes the Science Studio, an innovative workshop approach for instruction in a physical science course that combines aspects of traditional lecture and laboratory. The target audience for this introductory course is non-science majors, including prospective teachers. An inquiry-based, technology-rich learning environment has been created to allow students hands-on, in-depth exploration of topics in physics, and earth and space science. Course philosophy, course development, and sample activities are described in this paper, along with outcomes from a project-wide evaluation of the Virginia Collaborative for Excellence in the Preparation of Teachers (VCEPT), an investigation of change in student attitudes and …
A Future Teachers Conference – A Vehicle To Retain, Inform, And Inspire New And Prospective Teachers, J. Kasabian, L. Fathe, J. M. Dewar
A Future Teachers Conference – A Vehicle To Retain, Inform, And Inspire New And Prospective Teachers, J. Kasabian, L. Fathe, J. M. Dewar
Journal of Mathematics and Science: Collaborative Explorations
The Los Angeles Collaborative for Teacher Excellence (LACTE) Future Teachers Conference is a day-long learning event for beginning and pre-service K-12 math and science teachers. The Conference provides information, resources and connections tailored to the needs of prospective and new teachers. A unique aspect of the conference is that a group of new and future teachers serve as partners with college faculty on the planning committee. Thus the Conference not only serves to educate new and future teachers, but also provides leadership training for the planning team members; and, the presence of prospective and new teachers on the planning team …
My Library At Virginia Commonwealth University: Third Year Evaluation, Jimmy Ghaphery
My Library At Virginia Commonwealth University: Third Year Evaluation, Jimmy Ghaphery
VCU Libraries Faculty and Staff Publications
My Library is a personalization tool that allows the library user to consolidate frequently used library resources and services. Since 1998, My Library has been available as a web page to users of the Virginia Commonwealth University Libraries. An evaluation of My Library use at Virginia Commonwealth University (VCU) was completed and published in 2000. This article reports on a follow up study that took place between March 2000 and December 2001. The article also discusses the value of My Library as a teaching tool at VCU.
Electronic-Structure-Based Investigation Of Magnetism In The Fe8 Molecular Magnet, Mark R. Pederson, Jens Kortus, S. N. Khanna
Electronic-Structure-Based Investigation Of Magnetism In The Fe8 Molecular Magnet, Mark R. Pederson, Jens Kortus, S. N. Khanna
Physics Publications
We have performed density-functional-based electronic structure calculations on a single Fe8 molecular nanomagnet. Our calculated total moments and local moments are in excellent agreement with experiment. By including spin–orbit coupling we determine the easy, medium, and hard axes and find the ordering of the principle axes also agrees with experiment. From our calculated anisotropy Hamiltonian, we calculate the oscillations in the tunnel splittings and compare to the experimental results.
Caging Of Ni Clusters By Benzene Molecules And Its Effect On The Magnetism Of Ni Clusters, B. K. Rao, P. Jena
Caging Of Ni Clusters By Benzene Molecules And Its Effect On The Magnetism Of Ni Clusters, B. K. Rao, P. Jena
Physics Publications
Global optimization of the geometry of small Ni clusters interacting with benzene molecules yields equilibrium structures where the Ni atoms find themselves caged between the benzene molecules. This leads to quenching of the Ni magnetic moment in most of the complexes even though the structure of the caged Ni clusters remain relatively unchanged from their otherwise free gas phase geometry. The accuracy of these predictions, based on density functional theory with generalized gradient approximation for exchange and correlation, is established by the good agreement achieved between the calculated and available experimental dissociation energies and ionization potentials.
Spectroscopy Of Ni-N(Benzene)(M) Anion Complexes, B. K. Rao, P. Jena
Spectroscopy Of Ni-N(Benzene)(M) Anion Complexes, B. K. Rao, P. Jena
Physics Publications
Total energy calculations based on the generalized gradient approximation to the density functional theory reveal that the Ni(benzene) and Ni(benzene)2 anions are unstable against autodetachment of the additional electron while other anion complexes containing more than one Ni atom are stable. Although the adiabatic electron affinities increase with Ni content, they are significantly smaller than those in pure Ni clusters containing the same number of Ni atoms. The difference between adiabatic electron affinities and vertical detachment energies are around 0.2 eV in most cases, indicating that the equilibrium geometries of Nin(benzene)−m are not significantly altered from their corresponding neutral geometries. …
Magnetic Moment And Anisotropy In Fencom Clusters, J. Kortus, T. Baruah, M. R. Pederson, C. Ashman, Shiv N. Khanna
Magnetic Moment And Anisotropy In Fencom Clusters, J. Kortus, T. Baruah, M. R. Pederson, C. Ashman, Shiv N. Khanna
Physics Publications
Electronic structure calculations of FenCom (n+m=5 and 13) are used to examine the effects of alloying on the magnetic moment and magnetic anisotropies. Our density-functional studies show that many mixed clusters have moments comparable to or higher than the pure clusters. The mixed clusters, however, have very low anisotropies and could be ideal as soft magnetic materials. It is shown that shape, composition, and compositional ordering must be considered for optimization of anisotropy energies.
Contents
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Title Page
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
The Virginia Collaborative For Excellence In The Preparation Of Teachers, R. W. Farley, W. E. Haver
The Virginia Collaborative For Excellence In The Preparation Of Teachers, R. W. Farley, W. E. Haver
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Case Studies From An Integrated Mathematics And Science Course, P. E. Mcneil
Case Studies From An Integrated Mathematics And Science Course, P. E. Mcneil
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Revision Of A Non-Euclidean Geometry Course Based On The Van Hiele Model Of The Development Of Geometric Thought, M. P. Sheckels
Revision Of A Non-Euclidean Geometry Course Based On The Van Hiele Model Of The Development Of Geometric Thought, M. P. Sheckels
Journal of Mathematics and Science: Collaborative Explorations
This paper describes the revision of a course in non-Euclidean geometry to incorporate active student learning. The design of the course and the sequence of lessons were based on the van Hiele model of the development of geometric thought.
Thinking About Geometry: Laying A Foundation For Future K-8 Teachers, L. D. Pitt
Thinking About Geometry: Laying A Foundation For Future K-8 Teachers, L. D. Pitt
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
A Model General Education Science Course Involving Humanities And Sciences, Education, And Medical School Collaboration, J. P. Chinnici
A Model General Education Science Course Involving Humanities And Sciences, Education, And Medical School Collaboration, J. P. Chinnici
Journal of Mathematics and Science: Collaborative Explorations
This article described an innovative general education biology course for non-science majors, BIOL 102-Science of Heredity (SOH), stressing active student learning and collaboration [1]. The course has three components. The lecture is taught by J. P. Chinnici and several undergraduate "teacher apprentices"; students receive a classnotes packet, take in-class quizzes, and interact to work on genetic worksheets; incentives include reviewing books, visiting a science museum, and finding albino squirrels. Recitations are taught by graduate students in the Department of Human Genetics; student activities include preparing a family pedigree, writing a term paper, reporting orally and in writing on several media …
Enhancing Finite Mathematics With Global Awareness, D. L. Hydorn
Enhancing Finite Mathematics With Global Awareness, D. L. Hydorn
Journal of Mathematics and Science: Collaborative Explorations
This paper describes the project of modifying the course, Finite Mathematics, to meet a Global Awareness course requirement. The components of the revised course are described, including topics, in-class activities, and student evaluation methods, along with a summary of the results of a general education assessment of the course.
The Use Of Dramatic Demonstrations To Enhance The Motivation And Learning Of Chemistry Students, H. A. Rowe
The Use Of Dramatic Demonstrations To Enhance The Motivation And Learning Of Chemistry Students, H. A. Rowe
Journal of Mathematics and Science: Collaborative Explorations
As part of the Virginia Collaborative for Excellence in the Preparation of Teachers (VCEPT) project, a series of demonstrations was incorporated into Chemistry 100: Man and Environment, a science course taken by non-science majors including many prospective K-12 teachers. Dramatic chemical demonstrations were first presented to the undergraduate students by the instructor, and then they used demonstration activities to teach each other during the semester. Finally, these undergraduates presented to the K-6 students in the Norfolk Statue University (NSU) Summer Children’s College. The perceptions of science by the undergraduates at the beginning and end of the course were assessed using …
Integration Of Technology In Math And Science Education – A Model For Teaching Elementary And Middle School Pre-Service Teachers, R. W. Fisher, J. D. Ha, J. P. Chinnici
Integration Of Technology In Math And Science Education – A Model For Teaching Elementary And Middle School Pre-Service Teachers, R. W. Fisher, J. D. Ha, J. P. Chinnici
Journal of Mathematics and Science: Collaborative Explorations
This paper describes the development and implementation of a course, Integration of Technology in Math and Science Education, to introduce elementary and middle school pre-service teachers to real technology skills that they can use in their future classrooms. Activities allowed the students to learn technology skills while using the Internet to enrich their content skills and share information with their fellow students. The course was designed to allow students to master a variety of technology skills, and see how these skills can be used appropriately in their future classrooms, while also increasing their comfort level to use the technology and …
Mathematics For Non-Science Majors Chemistry Course, D. D. Shillady
Mathematics For Non-Science Majors Chemistry Course, D. D. Shillady
Journal of Mathematics and Science: Collaborative Explorations
A chemistry course developed for non-science majors has been taught at Virginia Commonwealth University for the past five years. CHEM 112 uses current event articles from science magazines to make use of a verbal channel of learning in non-science majors, but some mathematics is necessary. Examples are given of successful presentation of nuclear chemistry and data needed for a balanced discussion of global warming. Manipulation of symbols in balancing chemical and nuclear reactions, simple algebra, and logarithms for pH and unit analysis of simple stoichiometric conversions are fundamental to basic chemistry. The population of a voting democracy could benefit from …
The Impact Of A Clinical Faculty Institute On Participants' Skills For Mentoring Novice Teachers, Grades K-8, J. H. Cothron, G. M. Bass Jr.
The Impact Of A Clinical Faculty Institute On Participants' Skills For Mentoring Novice Teachers, Grades K-8, J. H. Cothron, G. M. Bass Jr.
Journal of Mathematics and Science: Collaborative Explorations
A seven-day Clinical Faculty Institute was implemented to increase the skills of mentor teachers and to develop a cadre of Clinical Faculty for the four participating colleges and universities. The 128 participants entered with "some confidence" in their ability to mentor novice teachers in areas typically taught in methods courses; whereas, they displayed "minimal confidence" in skills typically taught in supervisory courses. By the end of the Institute, participants showed significant changes in their "self-perceptions" of skills in twenty areas, with post-scores clustering between 3.5 and 3.9 on a four-point scale. Future institutes should focus on supervisory skills and then …
A Collaborative Pre-Practicum Apprentice Program Gives A Community College A Jump-Start In Teacher Preparation, G. F. Childers
A Collaborative Pre-Practicum Apprentice Program Gives A Community College A Jump-Start In Teacher Preparation, G. F. Childers
Journal of Mathematics and Science: Collaborative Explorations
The Virginia Collaborative for Excellence in the Preparation of Teachers (VCEPT), funded by a grant from the Division of Undergraduate Education of the National Science Foundation, implemented the VCEPT Pre-Practicum Apprentice Program a couple of years into the grant. Groups of colleges within the Collaborative were to work together to set up an experience for pre-service teachers at their colleges which emphasized mathematics, science, and technology and which gave the pre-service teachers some in-field experience observing instruction in the local schools with lead teachers in these disciplines. Virginia Commonwealth University (VCU), Virginia Union University (VUU), and J. Sargeant Reynolds Community …
Programs That Work Section, L. D. Pitt
Programs That Work Section, L. D. Pitt
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Tracking Transfer Of Reform Methodology From Science And Math College Courses To The Teaching Style Of Beginning Teachers Of Grades 5-12, E. Judson, D. Sawada
Tracking Transfer Of Reform Methodology From Science And Math College Courses To The Teaching Style Of Beginning Teachers Of Grades 5-12, E. Judson, D. Sawada
Journal of Mathematics and Science: Collaborative Explorations
The purpose of this study was to determine if reformed science and math courses at community colleges and the university were impacting education majors as they began a teaching career. The reformed courses, in contrast to typical lecture classes, implemented inquiry-based methods that emphasized deep understanding of fundamental science and math concepts. Trained evaluators, utilizing the Reformed Teaching Observation Protocol (RTOP) gathered a total of 86 classroom observations to gauge the level of reform that beginning teachers (one to three years’ teaching experience) were implementing in grades 5-12. The pre-service experience of the beginning teachers varied from having had zero …
Evaluating Reform Teaching In College Courses – Action Evaluation Is Action Research, G. M. Bass Jr.
Evaluating Reform Teaching In College Courses – Action Evaluation Is Action Research, G. M. Bass Jr.
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Chrome: A Pre-College Program For Science, Mathematics, Engineering, And Technology, E. G. Wilson
Chrome: A Pre-College Program For Science, Mathematics, Engineering, And Technology, E. G. Wilson
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Journal Of Mathematics And Science: Collaborative Explorations
Journal Of Mathematics And Science: Collaborative Explorations
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Aims & Scope
Journal of Mathematics and Science: Collaborative Explorations
No abstract provided.
Using Technology Within The Teacher Preparation Program As A Model For Effective Instruction, J. P. Johnson, L. E. Wilkowski
Using Technology Within The Teacher Preparation Program As A Model For Effective Instruction, J. P. Johnson, L. E. Wilkowski
Journal of Mathematics and Science: Collaborative Explorations
This article describes a methods course for teachers of elementary science and how it was enhanced to increase students’ abilities and attitudes toward using technology as a tool in teaching science. The course was enhanced as a result of the Virginia Collaborative for Excellence in the Preparation of Teachers (VCEPT) project. Prior to this project, the course was known for its constructivist approach, cooperative group activities, and experiential base that allowed students to actually do and teach elementary science. As a result of VCEPT, the class now also features an elaborate technology component. Technology of many types are regularly modeled …
Experimental And Theoretical Study Of Benzene (Acetonitrile)(N) Clusters, N=1-4, M. Samy El-Shall, George M. Daly, Douglas Wright
Experimental And Theoretical Study Of Benzene (Acetonitrile)(N) Clusters, N=1-4, M. Samy El-Shall, George M. Daly, Douglas Wright
Chemistry Publications
Well-resolved spectra of benzene–acetonitrile binary clustersBAn, with n=1–4 have been obtained by the (one-color) resonant two-photonionization technique using the benzene’s B2u←A1g 000 and 610 resonances. The spectra reveal a rapid increase in complexity with the number of acetonitrile molecules in the cluster, associated with van der Waal modes and isomeric forms. While only single cluster origins are found for the benzene–acetonitrile (BA) and the BA2clusters, two and four distinct isomers are identified for the BA3 and BA4clusters, respectively. The origins of the BA and BA2clusters are blueshifted with respect to the free benzene molecule by 38 cm−1 and 26 …