Digital Commons Network^™

Late Pleistocene Cryogenic Calcite Spherolites From The Malachitdom Cave (Ne Rhenish Slate Mountains, Germany): Origin, Unusual Internal Structure And Stable C-O Isotope Composition, Detlev Konrad Richter, Dana Felicitas Christine Riechelmann

International Journal of Speleology

Cryogenic calcites yielded U-series ages in the range from 15.61±0.20 ka to 14.48±0.12 ka, which is the youngest age obtained so far for this type of cryogenic cave carbonates in Europe. Most of these particles of the Malachitdom Cave (NE Brilon, Sauerland, North Rhine-Westphalia) are complex spherolites usually smaller than 1 cm. They show δ¹³C-values between –1 and –5 ‰ VPDB and δ¹⁸O-values ranging from –7 to –16 ‰ VPDB, the δ¹³C-values increase and the δ¹⁸O-values decrease from centre to border. The complex spherolites are interpreted to be formed in slowly freezing …

The Environmental Features Of The Monte Corchia Cave System (Apuan Alps, Central Italy) And Their Effects On Speleothem Growth, L. Piccini, G. Zanchetta, R. N. Drysdale, J. Hellstrom, I. Isola, A. E. Fallick, G. Leone, M. Doveri, M. Mussi, F. Mantelli, G. Molli, L. Lotti, A. Roncioni, E. Regattieri, M. Meccheri, L. Vaselli

International Journal of Speleology

The Monte Corchia cave system, one of the most famous and popular caves in Italy, has in recent times been the subject of investigation on its speleothems as paleoclimate archives. This paper describes the geology, geomorphology and water chemistry of the cave system with the aim to elucidate the processes that have generated these speleothems and the properties they contain that are so useful for paleoclimatology. Some general conclusions can be drawn: i) the Corchia system is a cave developed over different altitudes during progressive uplift of the mountain chain in which it is located, probably under drainage conditions very …

Palaeoclimate Research In Villars Cave (Dordogne, Sw-France), Dominique Genty

International Journal of Speleology

Villars Cave is a typical shallow cave from South-West France (45.44°N; 0.78°E; 175 m asl) that has provided several speleothem palaeoclimatic records such as the millennial scale variability of the Last Glacial period and the Last Deglaciation. Monitoring the Villars cave environment over a 13-year period has helped in the understanding of the stable isotopic speleothem content and in the hydrology. For example, it was demonstrated that most of the calcite CaCO₃ carbon comes from the soil CO₂, which explains the sensitivity of the δ¹³C to any vegetation and climatic changes. Drip rate monitoring, carried …

Terrorism, The Constitution, And Individual Liberties Lecture 20, Nadine Strossen

Articles & Chapters

No abstract provided.

Feed The Pig: A Financial Literacy Program For Grades 4-6, American Institute Of Certified Public Accountants. Financial Literacy Program

Guides, Handbooks and Manuals

No abstract provided.

Reframed Teacher Leadership: A Narrative Inquiry, Cynthia L. Kenyon

Dissertations and Theses @ UNI

Teacher leadership has been in schools from the time teachers rang the school bells. Three waves of teacher leadership have been examined. The first wave focused on formal managerial positions such as department chairs, the second wave focused on curriculum and staff development, and the third wave focused on daily acts of collaboration to solve problems and provide professional development activities for staffs. This study explored the third wave practice of teacher leaders in a qualitative study focusing on the narratives of 11 teacher leaders.

A narrative of lives format was used to study leadership experiences. A pilot study was …

The Aesthetics Of Trademarks, Peter H. Karlen

Contemporary Aesthetics (Journal Archive)

Trademarks are not just property, they are aesthetic creations that pervade everyday experience. One estimate is that the average person encounters more than 1,000 trademarks per day, many of which influence purchases and product use.

As pervasive aesthetic creations having literary, pictorial, graphic, sculptural, and musical content, trademarks deserve aesthetic analysis. The article discusses the origins, strength, appeal, and effectiveness of trademarks within the context of aesthetic considerations such as meaning, intention, authorship, and mode of creation. Also reviewed are morphemic and phonemic analysis of trademarks, semantic positioning, the dichotomy between creation and discovery of trademarks, and the differences between …

Definition Of Videogames, Grant Tavinor

Contemporary Aesthetics (Journal Archive)

Can videogames be defined? The new field of games studies has generated three somewhat competing models of videogaming that characterize games as new forms of gaming, narratives, and interactive fictions. When treated as necessary and sufficient condition definitions, however, each of the three approaches fails to pick out all and only videogames. In this paper I argue that looking more closely at the formal qualities of definition helps to set out the range of definitional options open to the games theorist. A disjunctive definition of videogaming seems the most appropriate of these definitional options. The disjunctive definition I offer here …

Polymer Reinforced Aerogels And Composites A. Polyimide Crosslinked Aerogels B. Silica-Polymethylmethacrylate Composites, Vishal U. Patil

Masters Theses

"Crosslinking of aerogels is a promising approach to combine the advantages of inorganic and polymeric materials. In the present study, two types of polyimide-silica hybrid aerogels, APTES-BTDA-MDA (mol ratio: 2:2:1) and APTES-BTDA-MDA (mol ratio: 2:3:2), were synthesized using a sol-gel process followed by heating in order to imidize the polyamic acid that is formed quickly and is covalently bonded to silica. The hybrid aerogels were made using 3-aminopropyltriethoxysilane (APTES) endcapped polyamic acids and tetramethoxysilane (TMOS) as precursors. Polyimide crosslinked aerogels were characterized by TGA, SEM, FT-IR, BET, solid state NMR and gas pycnometry. These hybrid aerogels exhibit high thermal stability …

Cleaning Up Lake River, Victor P. Goldberg

Faculty Scholarship

A casebook favorite for exploring the liquid dated damage/penalty clause distinction is Lake River Corp. v. Carborundum Co. in which Judge Posner found a minimum quantity clause to be an unenforceable penalty clause. In this paper I argue that the case was framed improperly. Had the litigators recognized that the contract afforded one party an option, the result should have been different. The contract was for the provision of a service – setting aside capacity – which was valuable to the buyer and costly for the seller to provide. The primary purpose of the minimum quantity clause was the pricing …

Land Tenure And Rental In Western Sudan, Michael Kevane, Leslie C. Gray

Economics

This paper reports on aspects of land tenure in western Sudan, especially the nature of tenure insecurity and the functioning of the land rental market. The active land rental market accounted for about one-third of cultivated land. Patterns of land rental transactions, and tests of the importance of insecurity in renting land, where the owner may not be able to reclaim land rented out, do not support the presumption that rental markets perform poorly. The role of the sheikh as administrator of village land, and the claims of large landowners to vast tracts, are, however, important political problems that must …

“Love For Sale”—Sex And The Second American Revolution, Harold P. Southerl

Duke Journal of Gender Law & Policy

No abstract provided.

Hidden In Plain Sight: Achieving More Just Results In Hostile Work Environment Sexual Harassment Cases By Re-Examining Supreme Court Precedent, Elisabeth A. Keller, Judith B. Tracy

Duke Journal of Gender Law & Policy

No abstract provided.

Public Employment-Free Speech Jurisprudence: A New Constitutional Test For Disciplined Whistleblowers, Joseph O. Oluwole

University of Florida Journal of Law & Public Policy

No abstract provided.

Classification Of Cylindrical Targets Buried In Seafloor Sediments, Edit J. Kaminsky, Madalina Barbu

Electrical Engineering Faculty Publications

This paper presents the development and evaluation of a time-frequency processing technique for detection and classification of buried cylindrical targets from chirpbased parametric sonar data. The software is designed to discriminate between cylindrical targets —such as cables— of different diameters, which need to be identified as different from other strong reflectors or point targets. The method is evaluated on synthetic data generated with an acoustic scattering model for elastic cylinders for seven different diameters. The model generates characteristic responses of targets acquired by a parametric sonar system. The signal at the sonar receiver hydrophones is first windowed to reduce the …

Of Republicrats And Dempublicans: Can African American Voting Patterns At The Local Level Translate Into Broader Support For National Republican Candidates?, Cleveland Ferguson Iii

University of Florida Journal of Law & Public Policy

No abstract provided.

11 U.S.C. § 707(B)(2)(A)(Iii): Does It Mean What It Says And Say What It Means?, A. Jay Cristol, Cheryl Kaplan

University of Florida Journal of Law & Public Policy

No abstract provided.

Effects Of Illustrations On Retention And Visual Attention Using Authentic Textbooks, Loris P. Fagioli

Master's Theses

Problem

The purpose of this exploratory study was to validate a model of multimedia learning, incorporating learner-specific characteristics such as intelligence, memory, and measures of visual attention.

Method

The sample consisted of 62 Andrews University students (26 males, 36 females, and mean age 21.7). Data were gathered by means of standardized testing (RPM, WAIS- III) and eye-tracking. MLR was used to determine significant visual attention predictors for retention and SEM was used to test a hypothesized model of multimedia learning.

Results

Multiple Linear Regression was significant (p.05; GFI = .923; CFI = .986; RMSEA = .043; PGFI = .451) proving …

Department Of Fisheries Annual Report To Parliament 2007/08, Government Of Western Australia Department Of Fisheries

Department of Fisheries Annual Reports

In accordance with Section 61 of the Financial Management Act 2006 (FMA) and Section 263 of the Fish Resources Management Act 1994 (FRMA), | submit for your information the Annual Report to Parliament of the Department of Fisheries of Western Australia for the financial year ending 30 June 2008.

If there is a key word to describe the bulk of the Department of Fisheries' achievements during 2007/08, 'collaborative' fits very well.

Collaboration is, of course, essential in the work of a government agency that deals with a variety of clients, and must be accountable to the Parliament and public of …

Geology Of Virginia For Teachers At Radford University, J. Tso

Journal of Mathematics and Science: Collaborative Explorations

The Radford University version of the Virginia Earth Science Collaborative‘s Geology of Virginia was taught during Summer 2006 and 2007, and was entitled, Geology of Virginia for Teachers (GEOL 691). A total of eighteen teachers, primarily from southside and southwestern Virginia, attended the class. The goal of the course was to provide essential knowledge and advanced skills in geology in general, and the geology of Virginia in particular. The course had a strong field emphasis, using Virginia as a natural teaching laboratory to illustrate such concepts as plate tectonics, rock interpretation, and Steno‘s Laws. Lectures and lab activities were used …

School Division Leaders Keen On In-School Mathematics Experts, D. Blount, J. Singleton

Journal of Mathematics and Science: Collaborative Explorations

No abstract provided.

Aims & Scope

Journal of Mathematics and Science: Collaborative Explorations

No abstract provided.

New Exact Traveling Wave Solutions For The Nonlinear Klein-Gordon Equation, Zaiyun Zhang

Turkish Journal of Physics

In this paper we discuss the nonlinear Klein-Gordon equation and we derive the new traveling wave solutions by applying trigonometric function series method. Also, they are complex linear combinations of kink solitary wave solutions and bell solitary wave solutions.

Pressure Induced Phase Transition In Monopnictides Cesb And Lasb, Sadhna Singh, Raja Chauhan, Atul Gour

Turkish Journal of Physics

In the present paper, monopnictides of Ce and La, which crystallize in B_1 structure, have been studied using effective interaction potential (EIP) approach. The phase transition pressure and volume collapses for CeSb and LaSb predicted from this approach are found to be close to experimental data.

High Field Conduction In Thin Films Of A-(Ge_{.20}{Se0}_{.80})_{1-X}{Pb}_X Glassy Alloys, Rachna Singh, Santosh Kumar

Turkish Journal of Physics

The present paper reports d.c. conductivity measurements at high electric fields in vacuum evaporated amorphous thin films of (Ge_{.20}Se0_{.80})_{1-x}Pb_x (where x = 0, 0.02, 0.04, 0.06 and 0.10) glassy alloys. Current-Voltage (I-V) Characteristics have been measured at various fixed temperatures. In these samples, at low electric fields, ohmic behavior is observed. However, at high electric fields (E \sim 10^4 V/cm), non-ohmic behavior is observed. An analysis of the experimental data confirms the presence of space charge limited conduction (SCLC) in the glassy materials studied in the present case. From the fitting of the data to the theory of SCLC, the …

Path Integral Evaluation Of A Time-Dependent Oscillator In An External Field, Akpan Ndem Ikot, Eno Etim Ituen, Ime. E. Essien, Louis Ete Akpabio

Turkish Journal of Physics

The Lagrangian of a system describing the dynamical behaviour of a time-dependent harmonic oscillator is modified and then used to evaluate the Feynman path integral of the oscillator. The path integral of the time-dependent oscillator is shown to reduce to the time-independent within certain limits.

Electric Dipole Oscillator Strengths Of Boron, Gökhan Tekeli̇, Şule Ateş, Gülteki̇n Çeli̇k

Turkish Journal of Physics

Electric dipole oscillator strengths for both individual and multiplet lines between some excited levels of atomic boron are calculated using the Weakest Bound Electron Potential Model Theory (WBEPMT). The Numerical Coulomb Approximation wave functions for expectation values of radii in all states and experimental ionization energies have been employed to determinate the parameters. The obtained results from this work agree very well with the accepted values taken from NIST, Multi-Configurational Hartree-Fock (MCHF) results and atomic line data.

Static Plane Symmetric Zeldovich Fluid Model In Scale Invariant Theory, Bivudutta Mishra

Turkish Journal of Physics

Field equations in the presence of a perfect fluid distribution for static plane symmetric metric are obtained in the scale invariant theory of gravitation proposed by Wesson [1]. A static Zeldovich fluid model corresponding to perfect fluid is presented. Physical and kinematical properties of the model are discussed.

Theoretical Investigation Of Superconducting State Parameters Of Binary Metallic Glasses Cu_{1-C}Sn_C, Aditya M. Vora

Turkish Journal of Physics

Superconducting state parameters (SSP) viz. electron-phonon coupling strength \lambda, Coulomb pseudopotential \mu^*, transition temperature T_C, isotope effect exponent \alpha and effective interaction strength N_O V of seven Cu_{1-c} Sn_c binary metallic glasses have been reported using Ashcroft's empty core (EMC) model potential for the first time. Five local field correction functions proposed by Hartree (H), Taylor (T), Ichimaru-Utsumi (IU), Farid et al. (F) and Sarkar et al. (S) are used in the present investigation to study the screening influence on the aforesaid properties. The T_C obtained from H-local field correction function are found in qualitative agreement with available experimental data …

Theoretical Analysis Of Acoustic Attenuation And Nonlinearity In Barium Monochalcogenides In B2 Phase, Rajendra Kumar Singh, Rishi Pal Singh, Manish Pratap Singh, Sujeet Kumar Chaurasia

Turkish Journal of Physics

Temperature dependence of ultrasonic attenuation due to phonon-phonon interaction and thermo-elastic loss have been studied in (CsCl-type) barium monochalcogenides (BaX, X= S, Se, Te), in the temperature range 50-500 K; for longitudinal and shear modes of propagation along , and directions. Second and third order elastic constants have been evaluated using electrostatic and Born repulsive potentials and taking interactions up to next nearest neighbours. Gruneisen parameters, nonlinearity constants, nonlinearity constants ratios and viscous drag due to screw and edge dislocations have also been evaluated for longitudinal and shear waves at 300 K. In the present investigation, it has been found …