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2006

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Enhanced Degradation Of Phenanthrene And Benzo(A)Pyrene In A Field-Contaminated Sediment Inhabited By Ilyodrilus Templetoni: A Microcosm Study, Marilou Montevirgen Nabatilan Jan 2006

Enhanced Degradation Of Phenanthrene And Benzo(A)Pyrene In A Field-Contaminated Sediment Inhabited By Ilyodrilus Templetoni: A Microcosm Study, Marilou Montevirgen Nabatilan

LSU Master's Theses

The influence of the oligochaete Ilyodrilus templetoni on the degradation of phenanthrene and benzo(a)pyrene present in a field-contaminated sediment was studied in microcosm experiments. Results indicate an enhanced degradation of phenanthrene and benzo(a)pyrene in microcosms inhabited by I. templetoni. Total phenanthrene reduction was observed at an average of 9.78 % in worm microcosms, while no reduction was observed in the control microcosms. Benzo(a)pyrene reduction, on the other hand, was determined at 78.60 % and 30.04 % in worm and control microcosms, respectively. The lowest concentrations of these PAHs at the end of 97-day study were observed well below the surface …

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Comparison Of Data Mining And Statistical Techniques For Classification Model, Rochana Lahiri Jan 2006

Comparison Of Data Mining And Statistical Techniques For Classification Model, Rochana Lahiri

LSU Master's Theses

The purpose of this study is to observe the performance of three statistical and data mining classification models viz., logistic regression, decision tree and neural network models for different sample sizes and sampling methods on three sets of data. It is a 3 by 2 by 3 by 8 study where each statistical or data mining method has been employed to build a model for each of 8 different sample sizes and two different sampling methods. The effect of sample size on the overall performance of each model against two sets of test data are observed and compared. It is …

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Ice Sheet Grounding Zone Deposits On Ross Sea Continental Shelf (Antarctica): Seismic Facies Analysis And P-Wave Reflectivity Attributes, Adeniyi Adewumi Saanumi Jan 2006

Ice Sheet Grounding Zone Deposits On Ross Sea Continental Shelf (Antarctica): Seismic Facies Analysis And P-Wave Reflectivity Attributes, Adeniyi Adewumi Saanumi

LSU Master's Theses

Subglacial till and overlying glaciomarine deposits are difficult to distinguish because the physical properties of subglacial till may vary depending on the drainage conditions of the rock directly beneath the ice sheet. Based on approximately 120 kilometers of multi-channel seismic data, detailed seismic facies analysis and amplitude variation with offset (AVO) analysis are carried out to examine the distribution of ice sheet grounding zone deposits on the continental shelf of the Northern Basin, Ross Sea (Antarctica) and infer the physical properties of interpreted subglacial till. Seismic facies analysis led to the differentiation of distinct sub-environments around a grounded ice sheet: …

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The Crystal Structure Of A Dna-Binding Protein, Hucr, From Deinococcus Radiodurans R1: A Member Of The Marr Family Of Winged-Helix Transcriptional Regulators, Hansen Bordelon Jan 2006

The Crystal Structure Of A Dna-Binding Protein, Hucr, From Deinococcus Radiodurans R1: A Member Of The Marr Family Of Winged-Helix Transcriptional Regulators, Hansen Bordelon

LSU Doctoral Dissertations

The MarR family of transcriptional regulators is an important group of prokaryotic DNA binding proteins. As the family name implies, multiple antibiotic resistance, members of the MarR family often regulate the expression of resistance genes to multiple antibiotics, organic solvents, household disinfectants, detergents, and oxidative stress agents. Most MarR members act as transcriptional repressors and exist as homodimers in both free and DNA-bound states. DNA-binding is mediated via a winged-helix fold and is often relieved by anionic lipophilic ligands. Deinococcus radiodurans R1 was found to encode a 181 residue MarR homolog designated HucR (hypothetical uricase regulator). Biochemical evidence has shown …

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Substrate Utilization In Skeletal Muscle And Adipose Tissue, Lauren M. Sparks Jan 2006

Substrate Utilization In Skeletal Muscle And Adipose Tissue, Lauren M. Sparks

LSU Doctoral Dissertations

Obesity and Type 2 diabetes are associated with high fat diet (HFD), reduced mitochondrial mass and function and insulin resistance as characterized by glucose disposal and relative to body fatness. We hypothesized that (a) HFD affects expression of genes involved in mitochondrial biogenesis and function, (b) carbohydrate metabolism and storage is under transcriptional control and (c) both overall fatness and characteristics of adipose tissue influence the interplay between free fatty acids (FFAs) and insulin-stimulated glucose disposal. To test hypotheses “a” and “b”, we fed 10 insulin-sensitive males an isoenergetic HFD for 3 days with muscle biopsies before and after intervention. …

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Asymmetry Of Tidal Plume Fronts In An Eastern Boundary Current Regime, David A. Jay, Jiayi Pan, Philip M. Orton, Alexander R. Horner-Devine Jan 2006

Asymmetry Of Tidal Plume Fronts In An Eastern Boundary Current Regime, David A. Jay, Jiayi Pan, Philip M. Orton, Alexander R. Horner-Devine

Civil and Environmental Engineering Faculty Publications and Presentations

The Columbia River tidal plume or near-field is formed twice daily by the ebb outflow of the Columbia River. It is a part of a larger, anticyclonic plume bulge, which in turn is embedded in far-field plume and coastal waters. Because of the mixing caused directly and indirectly by plume fronts, the interaction of the tidal plume and bulge with the California Current upwelling regime plays a vital role in coastal productivity on the Oregon and Washington shelves. The tidal plume is initially supercritical with respect to the internal Froude number on all stronger ebbs. It is separated from the …

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Export-Led Growth In Southern Africa, Ramona Sinoha-Lopete Jan 2006

Export-Led Growth In Southern Africa, Ramona Sinoha-Lopete

LSU Master's Theses

The objective of this thesis was to examine the validity of the Export-Led Growth (ELG) hypothesis in nine Southern African countries using annual data for the period 1980-2002. The thesis used time series econometric techniques to test for the causal linkage between exports and economic growth in Southern Africa. Dynamic econometric models were estimated to test for time series properties: unit root (ADF and PP tests), cointegration (Johansen’s procedure), and Granger-causality (Likelihood Ratio test-LR). The results of the unit root tests show that most of the series are stationary in first differences (series in levels have unit root—I(1)). Co-integration and …

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The Macarthur-Bates Communicative Development Inventory As An Assessment Tool For Low-Income, African American Children, Elizabeth Waters Wooden Jan 2006

The Macarthur-Bates Communicative Development Inventory As An Assessment Tool For Low-Income, African American Children, Elizabeth Waters Wooden

LSU Master's Theses

The purpose of this study was to examine the usefulness of the MacArthur- Bates Communicative Development Inventory (CDI) as an assessment tool for low-income, African American (AA) children. The data were from eighty-seven typically developing AA children, aged 8 to 30 months; these children were recruited from childcare centers that served low-income populations in Baton Rouge, Louisiana. Each participant’s primary caregiver completed a biographical sketch and a CDI inventory. Two analyses were completed. The first analysis examined the distribution of the CDI scores relative to the child’s age, gender, birth order, and level of maternal education. The second analysis involved …

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Positional Effects Of Trna Genes: Transfer Rna Genes As Chromatin Boundaries In Saccharomyces Cerevisiae, Tiffany Anne Simms Jan 2006

Positional Effects Of Trna Genes: Transfer Rna Genes As Chromatin Boundaries In Saccharomyces Cerevisiae, Tiffany Anne Simms

LSU Master's Theses

Recently, much evidence has been brought forth into the scientific community supporting the idea that RNA Polymerase III transcribed regions of DNA may serve as chromosomal landmarks for silencing. Transfer RNA genes are known to involve themselves in several extra-transcriptional functions within the chromosome, including the pausing of replication forks, Ty element integration, tRNA position effects (repression of neighboring genes), acting as a barrier to the spread of heterochromatin, and over-riding nuclosome positioning sequences. Our results suggest that many tRNA genes may serve these functions as well as exhibiting behavior similar to metazoan insulators. Also, ETC (Extra TFIIIC) sites within …

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Adaptive Scalable Protocols For Heterogeneous Wireless Networks, Vamsi Krishna Paruchuri Jan 2006

Adaptive Scalable Protocols For Heterogeneous Wireless Networks, Vamsi Krishna Paruchuri

LSU Doctoral Dissertations

The focus of this dissertation is to propose analytical models to study the impact of collisions and interference in heterogeneous wireless networks and propose simple scalable and lightweight protocols that use these models to adapt to network conditions thus increasing efficiency, decreasing energy consumption and prolonging network lifetime. The contributions of this dissertation are multifold and are summarized as follows: - Analytical models to study the impact of collisions and interference on both broadcast and unicast messages. These analytical models are incorporated into the proposed protocols to adapt to the prevailing network conditions to improve their performance. - Optimized Flooding …

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Power Analysis For A Mixed Effects Logistic Regression Model, Yinmei Li Jan 2006

Power Analysis For A Mixed Effects Logistic Regression Model, Yinmei Li

LSU Doctoral Dissertations

In herd health studies, the mixed effects logistic regression model with random herd effects are commonly used for modeling clustered binary data. These models are well developed and widely used in the literature, among which is the logistic-normal regression model. In contrast to the rich literature in modeling methods, the sample size/power analysis methods for such mixed effects models are sparse. The sample size/power analysis method for the logistic-normal regression model is not readily available. This study is to develop a power analysis/sample size estimation method for the logistic-normal regression model. Extended from the sample size method for the likelihood …

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The Regulation Of Genes Involved In Trichome Development, Matthew Lloyd Brown Jan 2006

The Regulation Of Genes Involved In Trichome Development, Matthew Lloyd Brown

LSU Doctoral Dissertations

Arabidopsis thaliana is an organism that can be used as a model for most of the processes that occur in flowering plants. The leaf hairs, or trichomes, of Arabidopsis thaliana are macroscopic single cells that have been used as a model system for cell fate determination, cell expansion, cell cycle regulation, cell wall deposition, as well as other processes. Initiation of the trichome cell fate is controlled by a complex of genes including GLABRA1 (GL1), TRANSPARENT TESTA GLABRA (TTG), and GLABRA3 (GL3). This work examines the role of GL3 in trichome initiation and uses plants expressing varying levels of GL3 …

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Media Use, Hiv/Aids Knowledge, And Sexual Beliefs: An Exploration Of Differences Between Races, Tarana Hammond Jan 2006

Media Use, Hiv/Aids Knowledge, And Sexual Beliefs: An Exploration Of Differences Between Races, Tarana Hammond

LSU Master's Theses

As the numbers rise among African Americans who are contracting HIV/AIDS, it becomes evident that research is needed to examine where African Americans obtain HIV/AIDS information. This study identified where African Americans obtain HIV/AIDS information and examined how that information affects African Americans’ sexual beliefs about HIV/AIDS. The theoretical foundation for this study was the Health Belief Model (HBM). This study used a survey method. The data analysis demonstrated that race does influence the type of media an individual uses. Race does not impact an individual’s access to health information. Knowledge about HIV/AIDS impacts an individual’s sexual beliefs about HIV/AIDS. …

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A Performer's And Conductor's Analysis Of Ingolf Dahl's For Alto Saxophone And Wind Orchestra, Christopher Scott Rettie Jan 2006

A Performer's And Conductor's Analysis Of Ingolf Dahl's For Alto Saxophone And Wind Orchestra, Christopher Scott Rettie

LSU Doctoral Dissertations

Ingolf Dahl’s Concerto for Alto Saxophone and Wind Orchestra was written in 1949 for the famous concert saxophonist, Sigurd Rascher and was then revised to its present state in 1953. The concerto, widely known by saxophonists and wind band conductors alike, is considered among the finest of repertoire for band as well as for saxophone. Although Dahl’s concerto is one of the most frequently performed saxophone concerti, there has been surprisingly little written about it. Available published sources deal directly with the concerto, but do not address harmonic implications, the saxophone solo part, or the published wind band score. This …

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Numerical Solution Of Flow Resistance In Outflow Pathway And Intravitreal Drug Delivery In Vitrectomised Eyes, Jyoti Gururaj Kathawate Jan 2006

Numerical Solution Of Flow Resistance In Outflow Pathway And Intravitreal Drug Delivery In Vitrectomised Eyes, Jyoti Gururaj Kathawate

LSU Master's Theses

In this study, numerical computations of the ocular fluid dynamics in a human eye are presented with a perspective of understanding the mechanisms of increased flow resistance. In the present study, the TM is represented as a multilayered-graded porous structure with specific pore size and void fraction. The flow patterns and pressure distribution in anterior chamber are analyzed to delineate key flow mechanism; the shear stresses on the lens, iris and IW of SC are also examined to locate the maximum values. Inside the human eye, the largest pressure drop occurs across JCT and IW of SC. The highest pressure …

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Tech Culture -- A Real World Practice Of Effectuation Theories, Yi J. Cheng Jan 2006

Tech Culture -- A Real World Practice Of Effectuation Theories, Yi J. Cheng

LSU Master's Theses

Tech Culture is a local startup company that has a very creative idea in the network security management area. The two founders have a very strong startup for their business but encounter some problems during the expansion of their business. This thesis is to analyze their business model using effectuation theories to make sure the business model fits the current economic development. Then, start using various business theories to correctly define and analyze their problems. At the end, some theory-driven suggestions are given to Tech Culture for its future development.

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The Scent Of A New World Novel: Translating The Olfactory Language Of Faulkner And García Márquez, Terri Smith Ruckel Jan 2006

The Scent Of A New World Novel: Translating The Olfactory Language Of Faulkner And García Márquez, Terri Smith Ruckel

LSU Doctoral Dissertations

Both William Faulkner and Gabriel García Márquez introduce the olfactory as a focal element in their writing, producing works that challenge the singular primacy of sight as the unrivaled means by which the New World might be understood. As they translate experiences of the New World into language, both writers record the power of olfactory perception to reflect memory and history, to shape identity, to mark unmistakably certain crisis moments of ethical action, and to delineate a form of knowledge crucial to their New World poetics of the novel. Observing and analyzing the olfactory language particular to the cultural spaces …

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Socrates As Citizen?: The Implications Of Socratic Eros For Contemporary Models Of Citizenship, Jeremy John Mhire Jan 2006

Socrates As Citizen?: The Implications Of Socratic Eros For Contemporary Models Of Citizenship, Jeremy John Mhire

LSU Doctoral Dissertations

This dissertation evaluates the appropriateness of using Socrates as a model for contemporary citizenship. I examine the question of Socrates' civic character by inquiring about the relation of the philosopher (or political scientist) to the city (that is, to political life) without taking for granted that they share a common aim or purpose. Instead, I prepare the discussion with an examination of the treatment of Socrates by the comic poet Aristophanes in the Clouds. I suggest that Socrates' famed eros, his unwavering love of wisdom, was a problem, one that threatened the very foundations of political society. By conceiving of …

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Tropical Pyramids: Dung Beetle Richness, Abundance, And Biomass, Meghan Gabrielle Radtke Jan 2006

Tropical Pyramids: Dung Beetle Richness, Abundance, And Biomass, Meghan Gabrielle Radtke

LSU Doctoral Dissertations

Volume is a proxy for biomass in hard bodied arthropods (P < 0.0001). I constructed biomass-volume equations for Neotropical (P < 0.0001), temperate (P < 0.0001) and 12 Neotropical genera of scarabs, of which 11 were highly significant. The effect of short term (< 1 year) alcohol storage on volume was negligable. I found scarab volume on geologically old soils in the Amazon was one-third that of the geologically young Amazon (P < 0.0001). Species richness (P = 0.0002), Chao 1 (P = 0.0003), Fisher’s  (P = 0.008) and Margalef indices (P = 0.0003) were greater on young soils. Menhinick (P = 0.54), Simpson (P = 0.54) and rarefied species richness (P = 0.24), which correct for sample size differences, indicated no difference in diversity. Young Amazonian soils likely support a higher volume and abundance of scarabs than old soils, but diversity across Amazonia may be similar. I compared beta-diversity of scarab communities across Amazonia. Species rank-abundance curves did not differ among sites whereas volume-abundance distributions and volume-rank abundance curves indicated a larger range of scarab sizes in Brazil than Ecuador. At local levels (<62 km), communities were similar whereas at large distances (>1750 km), they were different. Differences between Brazil and Ecuador may be explained by varied soil age and productivity. I examined the effects of tropical forest fragmentation on scarabs, comparing my results with three other studies from the same site. Among 1, 10, and 100-ha fragments and continuous forest, I found two important trends; beetle biomass and species richness increased with fragment area per sampling effort. Comparing all four studies, diversity increased with fragment size, and by my rarefaction analyses, two studies demonstrated beetle volume increased with fragment size. …

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Aristotelian-Liberal Autonomy, Geoffrey Allan Plauche Jan 2006

Aristotelian-Liberal Autonomy, Geoffrey Allan Plauche

LSU Master's Theses

Written in the burgeoning tradition of Aristotelian liberalism, my thesis seeks to enrich this tradition by developing a liberal theory of autonomy based on a broadly Aristotelian foundation. Chapter One summarizes and critiques the major contemporary theories of autonomy developed by Kant and analytic philosophers. Chapter Two explicates the Aristotelian conception of autonomy, drawing on recent work by Fred Miller and Roderick Long. Aristotle is chided for not being liberal enough and so Chapter Three develops an Aristotelian-liberal theory of autonomy based in part on recent work by Douglas Rasmussen, Douglas Den Uyl and Roderick Long. Global and local individual …

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The Emerging Culture Of A Community College, Misty Kyle O'Connell Jan 2006

The Emerging Culture Of A Community College, Misty Kyle O'Connell

LSU Master's Theses

This study explores the emerging organizational culture of Baton Rouge Community College (BRCC). Specifically, the study looks at how faculty and key administrators describe the institution’s culture. Qualitative interviews with seven administrators and ten faculty members reveal the two groups had consistent viewpoints on many themes. Findings indicate BRCC exhibits the characteristics of an adhocracy culture. BRCC’s administration and faculty also describe the college’s culture as strong and externally oriented.

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A Stochastic Mesoscopic Cell-Transmission Model For Operational Analysis Of Large-Scale Transportation Networks, Ciprian Danut Alecsandru Jan 2006

A Stochastic Mesoscopic Cell-Transmission Model For Operational Analysis Of Large-Scale Transportation Networks, Ciprian Danut Alecsandru

LSU Doctoral Dissertations

The cell transmission model (CTM), developed by Daganzo in 1994 was not fully exploited as an operations model for analysis of large-scale traffic networks. Because of its macroscopic / mesoscopic features, CTM offers calibration and computational advantages over microscopic models. This study presents a series of enhancements to the original form of CTM. These enhancements show potential to increase the model’s accuracy and realism of traffic flow representation. For example, topological enhancements and modifications to the flow advancing equation are introduced to allow variable cell lengths and non-discrete movements of vehicles between cells. In addition, implementation of lane-changing behavioral logics …

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Population Boundaries And Gravitational-Wave Templates For Evolving White Dwarf Binaries, Ravi Kumar Kopparapu Jan 2006

Population Boundaries And Gravitational-Wave Templates For Evolving White Dwarf Binaries, Ravi Kumar Kopparapu

LSU Doctoral Dissertations

We present results from our analysis of double white dwarf (DWD) binary star systems in the inspiraling and mass-transfer stages of their evolution. Theoretical constraints on the properties of the white dwarf stars allow us to map out the DWD trajectories in the gravitational-wave amplitude-frequency domain and to identify population boundaries that define distinct sub-domains where inspiraling and/or mass-transferring systems will and will not be found. We identify for what subset of these populations it should be possible to measure frequency changes and, hence, directly follow orbit evolutions given the anticipated operational time of the proposed space-based gravitational-wave detector, LISA. …

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Computer-Aided Diagnostic Systems For Digital Mammograms, Nicholas Jabari Lee Jan 2006

Computer-Aided Diagnostic Systems For Digital Mammograms, Nicholas Jabari Lee

LSU Master's Theses

A computer-aided diagnostic (CAD) system that uses a unique shape-based classification scheme, the Ellipse-Closed Curve Fitting (ECCF) algorithm, is developed for digital mammogram image analysis. The system is developed to work as a post-processing extension to a previously developed CAD system that locates and segments mass lesions, or tumors, found in digital mammograms into separate images. The ECCF system is implemented in the MATLAB mathematical scripting language and is thus capable of running on multiple platforms. The ECCF algorithm detects edges in tumor images and casts them into closed curve functions. Parameters for an ellipse of best fit for a …

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Zachary Richard's "Faire Récolte": A Translation From The French, Michael D. Bierschenk Jan 2006

Zachary Richard's "Faire Récolte": A Translation From The French, Michael D. Bierschenk

LSU Master's Theses

In the second half of the twentieth century, the Cajun language, which had been entirely oral for most of its history, began to emerge as a productive literary language. One of the prominent new authors of the period was Zachary Richard, also an important Cajun musician. One of his collections of poetry, Faire récolte (Les Éditions Perce-Neige, 1997), is translated here. This thesis also includes a translator's note that briefly explores the broad themes of the poems and the methods used in translating them.

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Do Accruals Exacerbate Information Asymmetry In The Market?, Sonia Wasan Jan 2006

Do Accruals Exacerbate Information Asymmetry In The Market?, Sonia Wasan

LSU Doctoral Dissertations

A considerable body of evidence, both archival and experimental, suggests that accounting accruals are heterogeneously interpreted by investors. In this study, I examine whether the information asymmetry among investors arising from this heterogeneous interpretation, implied in these empirical results, affects transactions costs in the form of the bid-ask spread and its adverse selection component. I examine this impact both, in general, for all trading activity occurring for a firm over a continuous flow of information during the year and around the first release of accrual information for each quarter. The results of the study provide empirical evidence of a positive …

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Burn Scar Mapping In The Sabine National Wildlife Refuge Using Landsat Tm And Etm+ Imagery, Chris Pennington Jan 2006

Burn Scar Mapping In The Sabine National Wildlife Refuge Using Landsat Tm And Etm+ Imagery, Chris Pennington

LSU Master's Theses

Marsh fires burn on a regular basis on the Southwestern Louisiana Coast from both natural and anthropogenic ignitions. Remote sensing based studies of these fires are scarce. Several burn scar mapping techniques have been developed and implemented for study of forest fires in the American West but have not been applied to marsh fires. Erdas Imagine and ArcGIS Software was used to process Landsat imagery of the Sabine National Wildlife Refuge in accordance with the most commonly used burn scar mapping spectral indices and tested for accuracy against manually digitized burn scar maps. Indices tested included the Normalize Burn Ratio …

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Pulsed Vertical Jet In Cross Flow At Mean Blowing Ratios 0.35 And 0.45, Pierre-Emmanuel Jacques Joseph Bouladoux Jan 2006

Pulsed Vertical Jet In Cross Flow At Mean Blowing Ratios 0.35 And 0.45, Pierre-Emmanuel Jacques Joseph Bouladoux

LSU Master's Theses

This thesis deals with a pulsed vertical jet transverse to a cross flow (U∞=1.6m/s) at mean blowing ratios 0.35 and 0.45. First the reasons of this study are explained and the previous work in the field is described. Then the experimental setup, the experimental procedures and the data processing are detailed. The system (wind tunnel and jet) is characterized before studying the Jet in Cross Flow (JICF). The JICF is explored under unforced and forced conditions through LASER sheet visualizations and constant temperature anemometry (CTA) measurements using hot-wire sensors. Blowing ratios ranging from 0.150 to 0.600 are studied …

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Voluntary Childlessness In The United States: Recent Trends By Cohort And Period, Laurie Chancey Jan 2006

Voluntary Childlessness In The United States: Recent Trends By Cohort And Period, Laurie Chancey

LSU Master's Theses

Most large-scale studies on voluntary childlessness since the waning of the baby boom provide cross-sectional estimates for a single time period. They cannot be synthesized to estimate change because of the varied definitions used to operationalize voluntary childlessness. In this study, I use data from the 1973-2002 cycles of the National Survey of Family Growth (NSFG) to estimate change in voluntary childlessness using a consistent definition by period and birth cohort. I find that voluntary childlessness stayed relatively constant through the seventies and eighties, but showed a large increase from the mid-nineties to 2002. I show that voluntary childlessness increased …

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High Harmonic Generation By Short Laser Pulses: Time-Frequency Behavior And Applications To Attophysics, Mitsuko Murakami Jan 2006

High Harmonic Generation By Short Laser Pulses: Time-Frequency Behavior And Applications To Attophysics, Mitsuko Murakami

LSU Doctoral Dissertations

High harmonic generation (HHG) is a process in which noble gas atoms excited by an intense laser field at frequency ω1 emit radiation of higher frequencies that are odd integer multiples of ω1. Driven by an infrared laser, high harmonic radiation can span from the optical into the extreme ultraviolet (XUV) frequency range. In this thesis, I study HHG using short laser pulses by solving the time-dependent Schrödinger equation (TDSE). In particular, I will focus on calculating and controlling the time-dependent instantaneous frequency (chirp) of high harmonics. The harmonic chirp is a direct consequence of the atom-field …

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