Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Louisiana State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 9211 - 9240 of 12422

Full-Text Articles in Entire DC Network

Country Roads Magazine: Has The Move From The "Country" Influenced Baton Rouge Advertisers' Buying Habits, Arianne Parker Bellizaire Jan 2004

Country Roads Magazine: Has The Move From The "Country" Influenced Baton Rouge Advertisers' Buying Habits, Arianne Parker Bellizaire

LSU Master's Theses

Country Roads magazine celebrated its 20th anniversary in September of 2003. Founded by Dorcas Woods Brown in 1983, the publication prides itself on offering its readers a cultural events guide showcasing events, festivals and destinations from Natchez, Mississippi, to New Orleans, Louisiana. Readers have watched the magazine evolve over the years. However, nearly two years ago, readers experienced one of the biggest changes. The magazine moved its headquarters from St. Francisville to Baton Rouge. This study evaluated Baton Rouge advertisers' reactions the move. The researcher modified and tested the Country-of-Origin Effects (COO) on a smaller scale by examining City-of-Origin effects. …

Go to article

The Figuration Of Caliban In The Constellation Of Postcolonial Theory, Paulus Sarwoto Jan 2004

The Figuration Of Caliban In The Constellation Of Postcolonial Theory, Paulus Sarwoto

LSU Master's Theses

The surrogation of Caliban from Shakespeare’s The Tempest to Césaire’s A Tempest has always been related to colonialism. In Shakespeare’s time, Caliban, depicted as half animal, served to represent the Other in an emerging colonial discourse. As opposed to Shakespeare’s character, Césaire’s Caliban is blatantly black and racially oppressed. Césaire indicates that A Tempest is an adaptation of Shakespeare’s The Tempest for black theater. As an adaptation, the play reinterprets the figure of Caliban to express postcolonial attitudes of the time. This thesis addresses the questions of how the figure of Caliban in Shakespeare’s play fits into the discourse of …

Go to article

Protein Aggregation Studies: Inhibiting And Encouraging Β-Amyloid Aggregation, Jed Paul Aucoin Jan 2004

Protein Aggregation Studies: Inhibiting And Encouraging Β-Amyloid Aggregation, Jed Paul Aucoin

LSU Doctoral Dissertations

This work demonstrates peptide-based aggregation mediation of fibril forming peptides, notably β-amyloid (1-40), Aβ1-40. To achieve the goals of this work, Aβ1-40 aggregation was governed by ionic strength, temperature, and pH. After controlling and reproducing Aβ1-40 aggregate formation (fibrils), each peptide-based aggregation mediator was evaluated for its ability to self-aggregate and to possess surface-active properties. The incorporation of these mediators in Aβ1-40 solutions changed the surface tension and produced aggregate complexes of mediator and Aβ1-40. Evidence that Aβ1-40 fibril formation may be mediated by disorder-to-order transitions has been observed by layer formation …

Go to article

Isolation And Characterization Of Carbonic Anhydrase From Ostertagia Ostertagi, Andrew Allan Derosa Jan 2004

Isolation And Characterization Of Carbonic Anhydrase From Ostertagia Ostertagi, Andrew Allan Derosa

LSU Doctoral Dissertations

The first event in the infection process of Ostertagia ostertagi in cattle is the process of exsheathment. Before trichostrongylid nematodes can transition from a free-living infective stage larva (L3) on pasture to a parasitic existence within the ruminant host, it must first undergo exsheathment. Exsheathment is the process whereby the L2 cuticle retained from the previous molt is cast from the L3. Exsheathment enables the developmental transition from a free-living stage on pasture to a parasitic existence in the bovine host. For those species with a predilection site in the abomasum, such as O. ostertagi, …

Go to article

Thermodynamic Characterization Of Dna Binding By Type I Dna Polymerases From Thermus Aquaticus And Escherichia Coli, Kausiki Datta Jan 2004

Thermodynamic Characterization Of Dna Binding By Type I Dna Polymerases From Thermus Aquaticus And Escherichia Coli, Kausiki Datta

LSU Doctoral Dissertations

DNA binding of the DNA polymerase I from Thermus aquaticus (Taq and Klentaq fragment) and E. coli (Klenow fragment) have been studied as a function of [salt] and temperature in order to understand their DNA binding thermodynamics. Binding of the two different species of polymerases occurs with sub-micromolar affinities in very different salt concentration ranges. Thus, at similar [KCl] the binding of Klenow is ~ 3kcal/mol (150X) tighter than the binding of Taq/Klentaq. Linkage analysis of the [KCl] dependence of DNA binding at 25°C reveals a net release of 2-3 ions for Taq/Klentaq and 4-5 ions for Klenow. DNA binding …

Go to article

Text, Context, And Identities In Pointe Coupee, Louisiana: Six Young Women Positioned As Writers, Patricia Meeks Smith Jan 2004

Text, Context, And Identities In Pointe Coupee, Louisiana: Six Young Women Positioned As Writers, Patricia Meeks Smith

LSU Doctoral Dissertations

Texts are contextualized¡Xtied to times, tied to places, and tied to the people who live in those times and places. This dissertation is based on a study of writing and identity set at Catholic High School in Pointe Coupee, Louisiana. For their senior English class, the six young women participating in the study produced a number of pieces of writing of various types, contrasting in genre, length, content, and register. These kinds of writing represent varying discourse practices, and it was within these practices that the young women positioned themselves or were positioned by influences in their social context. The …

Go to article

Behavioral And Electrophysiological Assessment Of Children With A Specific Temporal Processing Disorder, Annette Hurley Jan 2004

Behavioral And Electrophysiological Assessment Of Children With A Specific Temporal Processing Disorder, Annette Hurley

LSU Doctoral Dissertations

Auditory processing disorders (APDs) have received considerable attention over the past few decades. Much of the attention has focused on the controversy surrounding the operational definition of APD, the heterogeneous nature of APD, and an appropriate test battery for APD assessment. Temporal processing deficits are one characteristic of APD and are the focus of the present investigation. This investigation reports behavioral and early electrophysiological measures in a group of children with specific temporal processing difficulties and an age-matched control group. In an effort to better describe the subjects, two language tests and the SCAN-C were administered. Significant differences were found …

Go to article

Estimation Of The Effect Of Misclassifications On Diagnostic Test Performance In Two Persistent Bovine Viral Infections, Kimberly Orr Jan 2004

Estimation Of The Effect Of Misclassifications On Diagnostic Test Performance In Two Persistent Bovine Viral Infections, Kimberly Orr

LSU Doctoral Dissertations

Validation of diagnostic assay performance is hampered where no gold standard exists. Bayesian estimates of the sensitivity and specificity were applied to studies of two persistent bovine infections: bovine immunodeficiency virus (BIV), and bovine viral diarrhea virus (BVDV). BVDV pathogenesis is well described. Losses of $20 million in 1992 alone led the Danish government to mandate eradication. Two enzyme-linked immunosorbent assay (ELISA) tests were developed; one antibody-based to detect exposure, one antigen-based to detect persistent infection. Bayesian estimates of the sensitivity and specificity were 96.6% and 99.2%, and 98.2% and 99.8% for the antibody and antigen ELISA, respectively. Maximum Likelihood …

Go to article

A Distributed Quadtree Dictionary Approach To Multi-Resolution Visualization Of Scattered Neutron Data, Rion Dooley Jan 2004

A Distributed Quadtree Dictionary Approach To Multi-Resolution Visualization Of Scattered Neutron Data, Rion Dooley

LSU Doctoral Dissertations

Grid computing is described as dependable, seamless, pervasive access to resources and services, whereas mobile computing allows the movement of people from place to place while staying connected to resources at each location. Mobile grid computing is a new computing paradigm, which joins these two technologies by enabling access to the collection of resources within a user's virtual organization while still maintaining the freedom of mobile computing through a service paradigm. A major problem in virtual organization is needs mismatch, in which one resources requests a service from another resources it is unable to fulfill, since virtual organizations are necessarily …

Go to article

Investigation Of Insect-Weed Interactions In The Rice Agroecosystem, Kelly V. Tindall Jan 2004

Investigation Of Insect-Weed Interactions In The Rice Agroecosystem, Kelly V. Tindall

LSU Doctoral Dissertations

Interactions between graminaceous weed and insect pests of rice and between management practices for these pests were investigated. Studies were conducted to examine preference and performance of rice water weevil, Lissorhoptrus oryzophilus Kuschel, on several weeds commonly found in rice fields. Several weeds were more preferred than rice, and larvae were present on several dicotyledonous weeds, suggesting the host range of L. oryzophilus is broader than previously thought. Effects of the presence of barnyardgrass, (Echinochloa crus-galli Beauv.), on rice stink bugs, Oebalus pugnax F., and L. oryzophilus populations in rice fields were investigated. Presence of barnyardgrass and the synchrony …

Go to article

The Relation Between Knowledge Of Adhd And Treatment Acceptability In A Multi-Disciplinary Pediatric Clinic, Rebecca Owen Currier Jan 2004

The Relation Between Knowledge Of Adhd And Treatment Acceptability In A Multi-Disciplinary Pediatric Clinic, Rebecca Owen Currier

LSU Doctoral Dissertations

Behavior modification and medication have been proven to be the most effective interventions for children with ADHD. For these treatments to be effective, utilization of mental health care services as well as compliance with treatment recommendations is necessary. There has been shown lower care utilization among minorities for the treatment of behavioral disorders. In addition, lack of adherence among these populations to ADHD treatment is not explained by SES, parenting stress, or family coping. An alternative explanation may be parental knowledge of ADHD and opinions of commonly used treatments. The present investigation examined the effect of a brief knowledge intervention …

Go to article

Performing Masculinities: U.S. Representations Of The Male Body In Performance Art Monologues, Darren C. Goins Jan 2004

Performing Masculinities: U.S. Representations Of The Male Body In Performance Art Monologues, Darren C. Goins

LSU Doctoral Dissertations

In this study, I describe and analyze the masculinities constructed in four performance art monologues staged in the US on Broadway. I examined Whoopi Goldberg’s 1984 performance Whoopi Goldberg Live, Lily Tomlin’s 1987 performance in Jane Wagner’s The Search for Signs of Intelligent Life in the Universe, Eric Bogosian’s 1990 performance Sex, Drugs, Rock & Roll, and John Leguizamo’s 1998 performance Freak: A Semi-Demi-Quasi-Pseudo Autobiography. My method of analysis is a critical interpretation incorporating the lenses of Robert Connell and Victor Seidler. It is grounded in a social-cultural perspective using Arthur W. Frank’s “sociology of the body.” By means of …

Go to article

Adult Attachment Styles, Children's Self-Competence, And Children's Cognitive Ability: An Ecological Study, Elizabeth Benchea Block Jan 2004

Adult Attachment Styles, Children's Self-Competence, And Children's Cognitive Ability: An Ecological Study, Elizabeth Benchea Block

LSU Doctoral Dissertations

This study investigated children's perceived self-competence and its relationship to the social antecedent of adult attachment and the outcome of children's cognitive ability. Utilizing a predominantly African American sample, 154 mothers, 80 fathers and 205 children were included in this cross-sectional study of second and fourth grade children. Regression analyses indicated that the exploratory relationship between adult attachment as a predictor of children's self-competence was upheld with both second and fourth grade children of participating mothers and fathers. More specifically, maternal attachment was a significant predictor of second grade children's perceived physical competence, social acceptance, and maternal acceptance. Maternal attachment …

Go to article

A Longitudinal Study Of Adolescent Educational Aspirations And Their Relationship To College Choice Using Hierarchical Linear Modeling And Group-Based Mixture Modeling, Aruna Lakshmanan Jan 2004

A Longitudinal Study Of Adolescent Educational Aspirations And Their Relationship To College Choice Using Hierarchical Linear Modeling And Group-Based Mixture Modeling, Aruna Lakshmanan

LSU Doctoral Dissertations

The purpose of this study was four-fold: (1) to investigate the patterns of change in educational aspirations from the eighth grade through the twelfth in a large national sample of students from the National Educational Longitudinal Survey of 1988 (NELS:88); (2) to understand how demographic, socioeconomic, parental, academic, and school experience factors impact both initial aspirations and change in aspirations; (3) to investigate how educational aspirations relate to students’ attempts to actualize plans for postsecondary education; and (4) to analyze the data and compare the results obtained using two different growth modeling techniques – hierarchical linear modeling and group-based mixture …

Go to article

Written Language Skills Of Middle And High School Students In An Alternative Program, Zuhar Rende Jan 2004

Written Language Skills Of Middle And High School Students In An Alternative Program, Zuhar Rende

LSU Doctoral Dissertations

The purpose of this study was to determine the written language skills of middle and high school students who were attending alternative programs in Southern California. The participants of this study were 114 students who were identified and served under Delinquency Prevention Program (DPP) and 83 students who were identified and served under Court Ordered Probation (COP). The Test of Written Language -3 (TOWL-3) (Hammill & Larsen, 1996) was administered to the participants in order to obtain written language measures. In addition, this study investigated whether any relationships exists between written language skills, academic measures and selected demographic characteristics of …

Go to article

Multifunctional Nanocomposite Co-Containing Diamondlike Carbon Thin Films, Fengli Wang Jan 2004

Multifunctional Nanocomposite Co-Containing Diamondlike Carbon Thin Films, Fengli Wang

LSU Doctoral Dissertations

Metal-containing, hydrogenated carbon films (Me-a-C:H) is a special class of nanocomposite films of particular interest since they can be multifunctional through the synergistic interaction of their individual components. Thus, nanocomposite thin films possess high potential in a wide field of engineering applications, especially in small scale devices. A series of multifunctional nanocomposite Co-a-C:H thin films have been synthesized by a hybrid chemical vapor deposition (CVD) and physical vapor deposition (PVD) process to uncover the relationship between synthesis, microstructure and properties. The effects of deposition parameters on the microstructural evolution and properties have been systematically studied. The results showed that the …

Go to article

Characteristics Of An Effective Teacher Of Reading In An Elementary School Setting, Jennifer Aby Archer Jan 2004

Characteristics Of An Effective Teacher Of Reading In An Elementary School Setting, Jennifer Aby Archer

LSU Doctoral Dissertations

Struggling readers have been the central focus of American politics for decades. Teachers of all ages and experiences across America deliver reading instruction in a variety of ways. The purpose of this study is to determine the characteristics of an effective teacher of reading in an elementary classroom setting. The study was conducted in a public and a private sector school in a capital city in the southern United States. Two principals, two second grade teachers, and two fourth grade teachers were participants in this study. A qualitative research focus provided the methodological basis for this study. The research design …

Go to article

Utility Of The Implementation Of Programmatic Systems To Reduce And Eliminate Restraint Use For The Treatment Of Problem Behaviors With Individuals With Mental Retardation, Yemonja Smalls Jan 2004

Utility Of The Implementation Of Programmatic Systems To Reduce And Eliminate Restraint Use For The Treatment Of Problem Behaviors With Individuals With Mental Retardation, Yemonja Smalls

LSU Doctoral Dissertations

Persons with mental retardation continue to remain one of society’s most vulnerable groups as the number of individuals served increases and non-proportional resources are allotted to take of their needs. With results of national investigations indicating widespread indiscriminate abuse of restraints and overmedication to manage dangerous behaviors, federal mandates have been initiated to ensure ethical, safe and clinically sound use of these techniques. This study addressed the implementation of systemic changes that included a restraint education program and policy changes, careful monitoring and review of restraint and behavioral programming by oversight review bodies, and intense training of preventative and de-escalation …

Go to article

A Case Study Of A University-School Partnership: Impacting The Success Of Children, Teacher Candidates, And Inservice Teachers, Paula Summers Calderon Jan 2004

A Case Study Of A University-School Partnership: Impacting The Success Of Children, Teacher Candidates, And Inservice Teachers, Paula Summers Calderon

LSU Doctoral Dissertations

School reform is an often heard term within the Bush administration. Since the signing of his No Child Left Behind Act of 2001 (NCLB), President George W. Bush set out to make certain our teachers are highly qualified and that our children perform better in school. From the Holmes Group (1986) to present-day mandates from The National Council for Accreditation of Teacher Education (NCATE), university-school partnerships are becoming part of preservice teacher education as well as school reform. This study describes a pilot university-school partnership, focusing on teacher candidates, inservice teachers, and P-5 students. Employing qualitative and quantitative analysis (Gall, …

Go to article

The Relationship Between Social Behavior And Mealtime Behavior Problems In Individuals With Severe And Profound Mental Retardation, David E. Kuhn Jan 2004

The Relationship Between Social Behavior And Mealtime Behavior Problems In Individuals With Severe And Profound Mental Retardation, David E. Kuhn

LSU Doctoral Dissertations

One of the defining features of mental retardation is a problem in adaptive functioning. An area of adaptive skills commonly deficient in this population is social functioning, often characterized as behaviors that provide individuals with the means to interact effectively and appropriately with others. Researchers in this area have generally focused on improving appropriate social behavior and/or decreasing behavioral excesses that interfere with social interactions. Few studies have examined the effects of improving social behavior on collateral behaviors. The current study examined the relationship between social behavior and feeding and mealtime problem behavior in individuals with mental retardation. Individuals across …

Go to article

A Basic Interpretative Analysis Of Instrumental Music Education Majors' Approaches To Score Study In Varying Musical Contexts, Jeremy S. Lane Jan 2004

A Basic Interpretative Analysis Of Instrumental Music Education Majors' Approaches To Score Study In Varying Musical Contexts, Jeremy S. Lane

LSU Doctoral Dissertations

The purposes of this qualitative study were to 1) provide a holistic description of procedures used by undergraduate instrumental music education majors (N = 21) in music score study tasks; 2) examine relationships among these procedures and their use in varying musical contexts; 3) examine relationships among score study tendencies, education level, and overall musical ability; and 4) provide general comparisons of undergraduate music education majors’ score study procedures and those implied by expert conductors’ major disciplinary ways of thinking. Each subject participated in two one-on-one interview sessions with the investigator. During each session, subjects “thought out loud” as they …

Go to article

The Influence Of Ethnic Embeddedness On The Gender Role Attitudes And Division Of Household Labor Of Married Hispanic Women, Susana Guerra Jan 2004

The Influence Of Ethnic Embeddedness On The Gender Role Attitudes And Division Of Household Labor Of Married Hispanic Women, Susana Guerra

LSU Doctoral Dissertations

In this study I examine the effects of both network structure and network function on the gender role attitudes and division of household labor among Hispanic women. Using a representative sub-sample drawn from the first wave of the National Study of Families and Households, I determine to what extent network processes help explain the gender role attitudes and behaviors of Hispanic women. Specifically, I focus on how embeddedness within a Hispanic community, as well as a woman’s level of social support exchange with kin and non-kin help explain her current gender role attitudes and household labor allocation. I found that …

Go to article

Assessment Of Instructional Methodologies And Student Information Processing Styles In A Terrorism Preparedness Course, William James Mccarthy Jan 2004

Assessment Of Instructional Methodologies And Student Information Processing Styles In A Terrorism Preparedness Course, William James Mccarthy

LSU Doctoral Dissertations

The focus of the research was the evaluation of two instructional methodologies for teaching terrorism preparedness at several universities in Louisiana. Participants were taught a curriculum for an audience who may work at a potential terrorist target. The purpose of the research was to determine if processing styles based instruction improved learning. The objectives of the study were to: 1) Describe participant demographics: a) age, b) gender, c) credit hours, d) field of study; and e) preferred Strategic Information Processing Style (SIPS); 2) Determine if changes occur in knowledge of terrorism preparedness as measured by the Terrorism Awareness test; 3) …

Go to article

Developing Embryo Technologies For The Eland Antelope (Taurotragus Oryx), Gemechu G. Wirtu Jan 2004

Developing Embryo Technologies For The Eland Antelope (Taurotragus Oryx), Gemechu G. Wirtu

LSU Doctoral Dissertations

Assisted reproductive technologies developed in domestic cattle serve as a starting point in similar studies on nondomestic bovids. The common eland is a useful model species for studies on rare tragelaphine antelopes. In Chapter 3 of the present study, effects of components/attributes of protein-free embryo culture media on the in vitro development of in vitro-derived bovine embryos were evaluated. A 2 x 2 factorial study comparing effects of groups of amino acids (20aa or 11aa) in two base media (modified KSOM or BM-3) demonstrated that amino acids and base medium affected embryonic development. A subsequent 7 x 2 factorial experiment …

Go to article

Multiwavelength Observations Revealing The Evolution Of The Outburst Of The Black Hole Xte J1118+480, S. Chaty, C. A. Haswell, J. Malzac, R. I. Hynes, C. R. Shrader, W. Cui Dec 2003

Multiwavelength Observations Revealing The Evolution Of The Outburst Of The Black Hole Xte J1118+480, S. Chaty, C. A. Haswell, J. Malzac, R. I. Hynes, C. R. Shrader, W. Cui

Faculty Publications

We report multiwavelength observations of the soft X-ray transient XTE J1118+480, which we observed with UKIRT, Hubble Space Telescope (HST), RXTE, Extreme Ultraviolet Explorer (EUVE) and many other instruments and facilities. Adding radio (Ryle Telescope, VLA), submillimetre (JCMT) and X-ray (Chandra and SAX) data from the literature, we assembled the most complete spectral energy distribution (SED) of this source yet published. We followed the evolution of this source for 1 yr, including six observations performed during the outburst, and one observation at the end of the outburst. Because of the unusually high galactic latitude of XTE J118+480, it suffers from …

Go to article

Molecular And Culture-Based Analyses Of Aerobic Carbon Monoxide Oxidizer Diversity, Gary M. King Dec 2003

Molecular And Culture-Based Analyses Of Aerobic Carbon Monoxide Oxidizer Diversity, Gary M. King

Faculty Publications

Isolates belonging to six genera not previously known to oxidize CO were obtained from enrichments with aquatic and terrestrial plants. DNA from these and other isolates was used in PCR assays of the gene for the large subunit of carbon monoxide dehydrogenase (coxL). CoxL and putative coxL fragments were amplified from known CO oxidizers (e.g., Oligotropha carboxidovorans and Bradyrhizobium japonicum), from novel CO-oxidizing isolates (e.g., Aminobacter sp. strain COX, Burkholderia sp. strain LUP, Mesorhizobium sp. strain NMB1, Stappia strains M4 and M8, Stenotrophomonas sp. strain LUP, and Xanthobacter sp. strain COX), and from several well-known isolates for which the capacity …

Go to article

Uptake Of Carbon Monoxide And Hydrogen At Environmentally Relevant Concentrations By Mycobacteria, Gary M. King Dec 2003

Uptake Of Carbon Monoxide And Hydrogen At Environmentally Relevant Concentrations By Mycobacteria, Gary M. King

Faculty Publications

Liquid culture assays revealed a previously unreported capacity for Mycobacterium bovis BCG, M. gordonae, and M. marinum to oxidize CO and for M. smegmatis to consume molecular hydrogen. M. bovis BCG, M. gordonae, M. smegmatis, and M. tuberculosis H37Ra oxidized CO at environmentally relevant concentrations (<50 >ppm); H2 oxidation by M. gordonae and M. smegmatis also occurred at environmentally relevant concentrations (< 10 ppm). CO was not consumed by M. avium or M. microti, although the latter appeared to possess CO dehydrogenase (CODH) genes based on PCR results with primers designed for the CODH large subunit, coxL. M. smegmatis and M. gordonae oxidized CO under suboxic (10 and 1% atmospheric oxygen) and anoxic conditions in the presence of nitrate; no oxidation occurred under anoxic conditions without nitrate. Similar results were obtained for H2 oxidation by M. smegmatis. Phylogenetic analyses of coxL PCR products indicated that mycobacterial sequences form a subclade distinct from that of other bacterial coxL, with limited differentiation among fast- and slow-growing strains.

Go to article

Local-Field Factors In A Polarized Two-Dimensional Electron Gas, Juana Moreno, C. Marinescu Nov 2003

Local-Field Factors In A Polarized Two-Dimensional Electron Gas, Juana Moreno, C. Marinescu

Faculty Publications

We derive approximate expressions for the static local-field factors of a spin-polarized two-dimensional electron gas that smoothly interpolate between their small- and large-wave-vector asymptotic limits. The proposed analytical expressions reproduce recent diffusion Monte Carlo data for the unpolarized and fully polarized electron gas. We find that the degree of spin polarization produces important modifications to the local factors of the minority spins, while the local-field functions of the majority spins are less affected. © 2003 The American Physical Society.

Go to article

Rates Of Species Loss From Amazonian Forest Fragments, Gonçalo Ferraz, Gareth J. Russell, Philip C. Stouffer, Richard O. Bierregaard, Stuart L. Pimm, Thomas E. Lovejoy Nov 2003

Rates Of Species Loss From Amazonian Forest Fragments, Gonçalo Ferraz, Gareth J. Russell, Philip C. Stouffer, Richard O. Bierregaard, Stuart L. Pimm, Thomas E. Lovejoy

Faculty Publications

In the face of worldwide habitat fragmentation, managers need to devise a time frame for action. We ask how fast do understory bird species disappear from experimentally isolated plots in the Biological Dynamics of Forest Fragments Project, central Amazon, Brazil. Our data consist of mist-net records obtained over a period of 13 years in 11 sites of 1, 10, and 100 hectares. The numbers of captures per species per unit time, analyzed under different simplifying assumptions, reveal a set of species-loss curves. From those declining numbers, we derive a scaling rule for the time it takes to lose half the …

Go to article

All Linear Optical Quantum Memory Based On Quantum Error Correction, Robert M. Gingrich, Pieter Kok, Hwang Lee, Farrokh Vatan, Jonathan P. Dowling Nov 2003

All Linear Optical Quantum Memory Based On Quantum Error Correction, Robert M. Gingrich, Pieter Kok, Hwang Lee, Farrokh Vatan, Jonathan P. Dowling

Faculty Publications

An error-correction scheme that encodes an unknown two-photon state into four photons, up to one of which can be lost in the transmission is presented. Such a device acts as a simple repeater or quantum transponder when it is placed in series, and it acts as an optical quantum memory when it is inserted in an optical loop. Using this scheme, the conversion between flying qubits and stationary qubits in memory is not necessary, as the memory and quantum logic gates are composed fo the same optical resources.

Go to article

First Prev Next Last