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2011

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Low Density Parity Check (Ldpc) Codes For A Proposed Slantlet Transform Ofdm System In A Rayleigh Fading Channels With Perfect And Pilot Channel Estimation For M_Ary Psk Modulation, Ghanim Abd Al-Kareem Dec 2011

Low Density Parity Check (Ldpc) Codes For A Proposed Slantlet Transform Ofdm System In A Rayleigh Fading Channels With Perfect And Pilot Channel Estimation For M_Ary Psk Modulation, Ghanim Abd Al-Kareem

Iraqi Journal of Computers, Communications, Control and Systems Engineering

Orthogonal Frequency Division Multiplexing (OFDM) is a very attractive technique for high bit rate data transmission in a multipath fading environment that causes intersymbol interference (ISI). In this paper, two steps are used to improve the error rate performance of OFDM system. First, we proposed the Slantlet Transform (SLT) used instead of Fast Fourier Transform (FFT) to obtain high orthogonality properties between subcarriers and hence reduce (ISI). Second, we proposed the Low Density Parity Check (LDPC) Codes for the proposed SLT-OFDM system to improve the Bit Error Rate (BER) and Packet Error Rate(PER) performance. The goal of the proposed SLT …

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Hardware Implementation Of An Ann Trained By Ga And Pso Based On Fpga, Hanan A. R., Sundus Dhamad Hasan Dec 2011

Hardware Implementation Of An Ann Trained By Ga And Pso Based On Fpga, Hanan A. R., Sundus Dhamad Hasan

Iraqi Journal of Computers, Communications, Control and Systems Engineering

In this paper, Particle Swarm Optimization-feedforward Neural Network (PSONN) and Genetic Algorithm-Neural Network (GANN) are proposed to enhance the learning process of ANN in term of convergence rate and classification accuracy. They have been tested and compared and the results applied in pattern classification. The experiments show that both algorithms produce feasible results in terms of convergence time and classification percentage. At the end of the eVolutionary process of GANN for optimal structure, not only the best network structure for a particular application but also the trained network with few numbers of epochs is provided. A Hardware Design of ANN …

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Using Principal Component Analysis For Early Fault Detection In Louisville Water Distribution System., Kevin M. Kastensmidt Dec 2011

Using Principal Component Analysis For Early Fault Detection In Louisville Water Distribution System., Kevin M. Kastensmidt

Electronic Theses and Dissertations

This research dealt with the examination of Supervisory Control and Data Acquisition (SCADA) information of a water distribution system through Principal Component Analysis (PCA). PCA is a mathematical method to convert a set of possibly correlated data into a set of fewer variables called principal components. In a SCADA environment, possibly hundreds of data points such as booster pumps, storage tanks, pressure reducing valves, and others constantly provide operational statistics including water pressure, tank capacity, and more. This vast amount of data can be difficult to analyze in its entirety, especially to detect issues in the distribution system. PCA was …

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Comparative Evaluation Of Conventional Soldier Pile/Lagging Retention Systems Versus Soil Nailing Retention Systems., Abdul Amir Al-Helu 1966- Dec 2011

Comparative Evaluation Of Conventional Soldier Pile/Lagging Retention Systems Versus Soil Nailing Retention Systems., Abdul Amir Al-Helu 1966-

Electronic Theses and Dissertations

An investigation was made into the relative costs of excavation retention by two systems: conventional soldier pile-wale-tieback support, and support by soil nailing. The investigation included design of excavation supports by the two aforementioned systems for fifteen actual excavations, the majority of which were accomplished in the Louisville, Kentucky area. The design was optimized to arrive at minimum cost solutions. In all cases, the soil nailing system was much less costly than the conventional system. Several factors appeared to make soil nailing more economical than conventional retention systems, if deformations and settlement of soil nailing systems can be tolerated: lower …

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Examining Teachers' Perceptions Of Psychological Gender And Leadership Behavior Of Principals In Public Elementary Schools., Brittany D. Carpenter Dec 2011

Examining Teachers' Perceptions Of Psychological Gender And Leadership Behavior Of Principals In Public Elementary Schools., Brittany D. Carpenter

Electronic Theses and Dissertations

Research has shown that various leadership styles have different impacts on leader outcomes such as satisfaction, extra effort, and effectiveness. Specifically, researchers have found that transformational leadership positively impacts follower perceptions of satisfaction, extra effort, and leader effectiveness (Avolio, Bass, & lung, 1995; Philbin, 1997; Yammarino, Spangler, & Bass, 1993). However, research has shown that not all leaders display transformational leadership. In fact, Eagly, Karau, & lohnson (1992) and their colleagues have shown transformational leadership in education to be linked to the extent to which male and female principals carry out their gender roles - referring to role congruity. Currently, …

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The Parthenon, December 1, 2011 , Kristin Steele Dec 2011

The Parthenon, December 1, 2011 , Kristin Steele

The Parthenon

The Parthenon, Marshall University’s student newspaper, is published by students Monday through Friday during the regular semester and weekly Thursday during the summer. The editorial staff is responsible for the news and the editorial content.

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Characterization And Discrimination Of Large Caliber Gun Blast And Flash Signatures, Bryan J. Steward Dec 2011

Characterization And Discrimination Of Large Caliber Gun Blast And Flash Signatures, Bryan J. Steward

Theses and Dissertations

Two hundred and one firings of three 152 mm howitzer munitions were observed to characterize firing signatures of a large caliber gun. Muzzle blast expansion was observed with high-speed (1600 Hz) optical imagery. The trajectory of the blast front was well approximated by a modified point-blast model described by constant rate of energy deposition. Visible and near-infrared (450 - 850 nm) spectra of secondary combustion were acquired at 0.75 nm spectral resolution and depict strong contaminant emissions including Li, Na, K, Cu, and Ca. The O2 (X-b) absorption band is evident in the blue wing of the potassium D lines …

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Living Cities: The Integration Initiative In Cleveland, Ohio - Greater University Circle Community Wealth Building Initiative: Year One Formative And Summative Evaluation Report, Ziona Austrian, Kathryn W. Hexter, Candi Clouse, Matt Hrubey Dec 2011

Living Cities: The Integration Initiative In Cleveland, Ohio - Greater University Circle Community Wealth Building Initiative: Year One Formative And Summative Evaluation Report, Ziona Austrian, Kathryn W. Hexter, Candi Clouse, Matt Hrubey

All Maxine Goodman Levin School of Urban Affairs Publications

No abstract provided.

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Process Parameter-Microstructure-Mechanical Property Relations Of Sicp-Reinforced Aluminum Composites Produced By Powder-Injection Casting, M Bunma, P Subarporn, R Bobuangern, T Patthannkitdamrong, T Thuanwong, T Patcharawit Dec 2011

Process Parameter-Microstructure-Mechanical Property Relations Of Sicp-Reinforced Aluminum Composites Produced By Powder-Injection Casting, M Bunma, P Subarporn, R Bobuangern, T Patthannkitdamrong, T Thuanwong, T Patcharawit

Journal of Metals, Materials and Minerals

Aluminum composites are of interest for engineering applications such as electrical and especially automotive applications and their final physical and mechanical properties are usually determined by fabrication techniques. This research aimed to study effects of process parameters, which are i) argon gas flow rates at 5 and 10 l/min, and ii) casting temperatures at 620 and 680C, on integrity of the SiCp-reinforced 356 aluminum composites fabricated by powder-injection casting using a modified flux injection degassing machine. The SiCp additions are 0, 10 and 15 wt.%. Microstructure - mechanical property relations were constructed based on the predetermined process parameters. Aluminum 356 …

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Synthesis Of Aligned Carbon Nanotubes By Floating Catalyst Method Using Ferrocene, R Ravindra, B R. Bhat Dec 2011

Synthesis Of Aligned Carbon Nanotubes By Floating Catalyst Method Using Ferrocene, R Ravindra, B R. Bhat

Journal of Metals, Materials and Minerals

The aligned carbon nanotubes (CNTs) have been synthesised by floating catalyst method using ferrocene as catalyst precursor and acetylene as carbon precursor. The reaction was carried out at 850C in double stage chemical vapor deposition (CVD) apparatus. The grown aligned CNTs were purified by air oxidation and acid treatment method. The aligned CNTs were characterised by using scanning electron microscopy, transmission electron microscopy and Raman spectroscopy. The purity of CNTs was determined by Thermal analysis and X-ray diffraction method. The average diameter of aligned CNTs were around 20nm. This process not only produces aligned CNTs but also avoids the preparation …

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Lanthorn, Vol. 46, No. 28, December 1, 2011, Grand Valley State University Dec 2011

Lanthorn, Vol. 46, No. 28, December 1, 2011, Grand Valley State University

Volume 46, July 14, 2011 - June 18, 2012

Lanthorn is Grand Valley State's student newspaper, published from 1968 to the present.

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Common Crowd Dynamics: Shaping Behavioral Intention Models, Marcel Bouchard Dec 2011

Common Crowd Dynamics: Shaping Behavioral Intention Models, Marcel Bouchard

Theses

As the human population grows, so too does the need to understand human behavior. One particularly important aspect of human behavior is how it changes within conglomerations of people, i.e. crowds. In this thesis, a method for modeling crowd behavior is proposed. This method draws inspiration from the concept of behavioral intention and the related forces of attitudes, influences, and social norms. These topics are first defined and detailed, followed by a survey of related research. Next, the model is presented and adapted to three common crowd dynamics, each stressing a different component of behavioral intention. Observations are made about …

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Erosion From A Cross Country Gas Pipeline In The Central Appalachians, Bridget Mae Harrison Dec 2011

Erosion From A Cross Country Gas Pipeline In The Central Appalachians, Bridget Mae Harrison

Theses

Increasing energy demand, coupled with the recent emphasis on domestic production, has resulted in an increase in natural gas exploration and pipeline construction in the central Appalachian region. Very little is known about the effects of natural gas pipeline construction on sediment production. The goals of this project were to measure erosion and examine the effects of vegetation and precipitation characteristics on erosion on a newly constructed pipeline in the Fernow Experimental Forest in West Virginia. The study explored whether seed rate, slope class, or aspect, influenced erosion. The cross country pipeline was buried beneath the surface on study hillslopes …

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The Impact Of Chinese Purchases Of U.S. Government Debt On The Treasury Yield Curve, Radhames A. Lizardo, Andre V. Mollick Dec 2011

The Impact Of Chinese Purchases Of U.S. Government Debt On The Treasury Yield Curve, Radhames A. Lizardo, Andre V. Mollick

School of Economics and Finance Faculty Publications

Examining monthly data from May of 1985 to May of 2008, we find that increases in Chinese purchases of U.S government debt lead to decreases in Treasury yields. The effect is stronger as the maturity increases: a one percent increase in purchases of U.S. Treasuries by Chinese investors lowers the two-year (ten-year) Treasury yield by 10 to 38 basis points (39 to 55 basis points) on average, ceteris paribus . Overall, the demand-side variable capturing Chinese purchases of U.S. Treasuries improves the cointegrating properties of U.S. interest rates. In-sample and out-of-sample forecasts reinforce that the model with Chinese purchases greatly …

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Through-Silicon Via (Tsv) Related Noise Coupling In Three-Dimensional (3-D) Integrated Circuits (Ics), Mohammad Hosein Asgari Dec 2011

Through-Silicon Via (Tsv) Related Noise Coupling In Three-Dimensional (3-D) Integrated Circuits (Ics), Mohammad Hosein Asgari

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

As conventional integrated circuits are approaching the physical limits due to technology scaling, alternative and complementary technologies have become a major focus. Among various emerging technologies, three-dimensional (3-D) integration technology offers several advantages to increase performance and functionality while reducing cost. In 3-D technologies, multiple dies are stacked in a monolithic fashion where the communication among the dies is achieved by vertical through-silicon vias (TSVs). Despite important advantages, 3-D integration has certain challenges that need to be addressed. In this thesis, noise coupling due to TSVs, an important issue that degrades signal integrity, is investigated. Compact models are proposed to …

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Visual Synthesis Of Planar Parallel Manipulators Using Constraint Manifold Geometry, Sagar Sanjay Anantwar Dec 2011

Visual Synthesis Of Planar Parallel Manipulators Using Constraint Manifold Geometry, Sagar Sanjay Anantwar

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

In this thesis, a visual approach for the dimensional synthesis of planar parallel manipulators is discussed. The presented approach transforms the kinematic constraint problem to a geometric constraint manifold manipulation problem. For planar mechanisms, the kinematic constraint equations represent the limits for the motion of the links in the Cartesian space. The use of Quaternions is made in designing of this motion. The problem of motion of planar mechanisms is translated into a problem of designing of a smooth rational curve in the Quaternion space (Image space). An intuitive graphical design tool has been developed. The design tool facilitates the …

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Post-Traumatic Stress Disorder: Symptoms And Its Relationship To Corticosteroid Dysregulation, Michelle Bylicky Dec 2011

Post-Traumatic Stress Disorder: Symptoms And Its Relationship To Corticosteroid Dysregulation, Michelle Bylicky

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Stress is the subjective experience of encountering or being affected by psychological or physical threats. Depending on the situation and the individual's ability to adapt to the particular event will affect how the individual continues to function. Memory can be both adaptive and maladaptive to the individual recovering from the stress of the event. It is known that part of successful adaptation is remembering the important events of a trauma in order to better decide how to react in possible, similar future events. However, certain individuals can develop Post traumatic Stress disorder (PTSD) as a response to an event. PTSD …

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Impacts On Spartina Alterniflora: Factors Affecting Salt Marsh Edge Loss., James Paul Browne Dec 2011

Impacts On Spartina Alterniflora: Factors Affecting Salt Marsh Edge Loss., James Paul Browne

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Spartina marshes are found on shores along the Atlantic coast of North America. A number of natural and anthropogenic impacts are thought to affect the rate of salt marsh loss. However, few long term assessments of changes in salt marshes are available. This dissertation project characterized and ranked factors that influence the recession of the edge of Spartina alterniflora salt marshes, focusing on Hempstead Bay, the westernmost bay of Long Island's South Shore Estuary reserve. I used 12 sets of aerial photographs of these marshes taken from 1926 to 2007 Using a randomization process, I chose 500 points along the …

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Structural And Energetic Determinants Of Function In The Heterotrimeric G-Proteins, Noel Carrascal Dec 2011

Structural And Energetic Determinants Of Function In The Heterotrimeric G-Proteins, Noel Carrascal

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The heterotrimeric G-proteins are important in signal transduction that triggers important biological functions in cells of living organisms. The use of theoretical models to study these proteins gives additional insight into mechanisms of signal transduction and molecular recognition events in the cell. With that objective in mind, molecular dynamics simulations of a heterotrimeric G-protein reveal structural and energetic differences among the states of its signaling cycle. The simulations are stripped explicit waters and analyzed in search of determinants of function with the help of backbone clustering and continuum electrostatic models such as Poisson-Boltzmann (PB) and generalized-Born (GB). The energies are …

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Wear Resistant Carbide-Based Thermal Sprayed Coatings: Process, Properties, Mechanical Degradation And Wear, Arash Ghabchi Dec 2011

Wear Resistant Carbide-Based Thermal Sprayed Coatings: Process, Properties, Mechanical Degradation And Wear, Arash Ghabchi

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Thermally sprayed ceramic-metallic composite (CerMet) materials consist of ceramic particles mainly in form of carbides reinforced by metallic binder exhibit unique microstructural and mechanical characteristics. Such structure brings in a novel combination of hardness and toughness enabling application of this class of material in wear resistant surfaces. Final deposit microstructure that defines the mechanical properties and wear performance of material depends on process parameters and starting material characteristics. Complex interaction of in-flight particles with supersonic flame, formation of complex defective deposit structure comprising of pores,cracks and splat boundaries make comprehending of interrelation of process, microstructure, properties and performance a difficult …

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Development Of A Single Photon Detector For Fluorescent Spectrometry, Dmytro Gudkov Dec 2011

Development Of A Single Photon Detector For Fluorescent Spectrometry, Dmytro Gudkov

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

I present a novel single photon spectrometer and discuss its use for ultra-fast and highly accurate detection of quantum dots and micro-beads encoded with compositions of various types of quantum dots. The spectrometer receives a polychromatic light through a fiber input. The received light undergoes color decomposition by a diffraction grating and is further detected by a 32-channel PMT (Hamamatsu, Japan) operating in single photon counting mode. Due to a novel, highly advanced analog/digital circuitry operating in GHz range, the 32-channel single photon detector has a unique performance: it supports detection of up to 108 photon/s/channel, data acquisition rate at …

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Verification Of Security Policy Administration And Enforcement In Enterprise Systems, Puneet Gupta Dec 2011

Verification Of Security Policy Administration And Enforcement In Enterprise Systems, Puneet Gupta

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The scale and complexity of security policies in enterprise systems makes it difficult to ensure that they achieve higher-level security goals. This dissertation explores two important ways in which policy analysis can help: reachability analysis for administrative policies, and analysis of policy enforcement in enterprise systems. An administrative policy specifies how each user in an enterprise may change the policy. Fully understanding the consequences of an administrative policy can be difficult, because sequences of changes by different users may interact in unexpected ways. Administrative policy analysis helps by answering questions such as user-permission reachability, which asks whether specified users can …

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Gasb-Based Type-I Diode Lasers Operating At 3 Μm And Above, Takashi Hosoda Dec 2011

Gasb-Based Type-I Diode Lasers Operating At 3 Μm And Above, Takashi Hosoda

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The ultimate goal of the research is the development of the semiconductor lasers operating at room temperature under continuous wave regime at 3 μm and above. This dissertation focuses on room temperature operated GaSb-based type-I diode lasers. The new device design was proposed to reach desirable laser operation wavelength. Besides employing the compressively strained quantum wells (QWs) in the devices active region, the composition of waveguide and barrier material has been modified to optimize the band offsets between quantum wells and the neighboring layers. The use of quinternary AlGaInAsSb alloys for waveguide and barrier layers, leads to the reduction of …

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Nanoscale Metal - Organic Ligand Interactions For Applications In Environmental Remediation And Catalysis, Prashant Kumar Jha Dec 2011

Nanoscale Metal - Organic Ligand Interactions For Applications In Environmental Remediation And Catalysis, Prashant Kumar Jha

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Ever since the proposal of correct structure of CoCl3*6NH3 by Alfred Werner in 1893 the field of coordination chemistry has only grown and has become the center of chemical science owing to wide ranging applications in the fields of catalysis, medicine, biochemistry and organometallic chemistry. This dissertation deals with novel application of coordination chemistry from three different perspectives. The first explores the fate of a known contaminant (uranyl ion) in ground water with natural organic matter (NOM) using simple analogous aromatic and aliphatic molecules (catechol and oxalic acid). It was found that not only the immediate complex formed, long term …

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What Is The Nature Of Legislative Resistance To National Education Standards?, Florian Jacobus Lewenstein Dec 2011

What Is The Nature Of Legislative Resistance To National Education Standards?, Florian Jacobus Lewenstein

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

During the past three decades there has been ongoing national discourse over the increasing deterioration of our public education system. There is universal agreement that education is a critical component of our societal infrastructure that is necessary for the future of our economy and our democratic way of life. From the outset, one reform that has been proposed as essential is the establishment of national standards for K - 12 education, to assure that all students will be provided access to a curriculum that will prepare them for higher education and participation in the civic life of our society. Proposals …

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Investigation Of Materials Surface Chemistry On Osteoblast Proliferation, Migration And Differentiation, Xia Lu Dec 2011

Investigation Of Materials Surface Chemistry On Osteoblast Proliferation, Migration And Differentiation, Xia Lu

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Osteoporosis, a bone disease caused by the decreased mass and impaired structure of bone, is becoming an increasing threat to the health of the elderly population. To treat and prevent this kind of suffering, understanding of the bone formation and regeneration is of significant importance, during which bone cell-biomaterial interaction plays a critical role, especially osteoblasts. In this work, we report an in situ investigation of osteoblast proliferation, migration and differentiation on a series of substrates with variable surface chemistry as a result of coating fabrication. Primary investigation indicated that cells migrated faster on sulfonated polystyrene (SPS)-coated MirrIR slides than …

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A Figura Of Authenticity: Redefining Authentic Living In Kazuo Ishiguro's Never Let Me, Stacy Marie Mckelvey Dec 2011

A Figura Of Authenticity: Redefining Authentic Living In Kazuo Ishiguro's Never Let Me, Stacy Marie Mckelvey

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

This essay explores the concept of authenticity in Kazuo Ishiguro's novel Never Let Me Go in relation to the ontologies presented in Martin Heidegger's Being and Time and Jean-Paul Sartre's Being and Nothingness. Through a comparison of the three central characters, I argue that Kathy H. reveals an image of authentic living that reflects Heidegger's and Sartre's philosophies, yet also transcends them. Ishiguro, I argue, reconceives the exigencies of authentic self-creation by creating a protagonist who is able to establish her own existential projects, recognize the relationship between the factical and transcendental aspects of her identity, and accept her death …

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Glass House, Robert Bruce Morris Dec 2011

Glass House, Robert Bruce Morris

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Anthony is an architect who idolizes Mid-Century Modern design. When he and his wife, Abby, move into a glass house in the suburbs, his obsession with order surfaces as his persona begins to shatter. On the simplest level, living together tests the couple's ability to cohabitate. But the probing presence of a difficult neighbor named Jane pushes their difficulties into a true crisis. Jane, an African American, suspects that Anthony, who looks to be of Middle Eastern descent, is a terrorist. The situation is particularly loaded because Jane, who has erased all traces of her cultural ethnicity, takes pride in …

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Synthesis, Characterization And Luminescence Studies Of Lanthanide-2,5-Thiophenedicarboxyalate Frameworks, Quddus Amin Nizami Dec 2011

Synthesis, Characterization And Luminescence Studies Of Lanthanide-2,5-Thiophenedicarboxyalate Frameworks, Quddus Amin Nizami

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Four novel three-dimensional lanthanide-thiophenedicarboxylate hybrid compounds, Tb4(C44S6O37) [Tb4(2,5-TDC) [1]; TDC= thiophenedicarboxylate]; space group P-1, a=12.8068(9) ? , b=14.5574(10) ? , c= 19.1276(12) ? , α= 106.660(2)̊, β= 105.621(2)̊, γ= 93.691(2)̊, V= 3251.21(4) ? 3 , Dy4(C46H43O32S6) [Dy4(2,5-TDC) [2]], space group P-1, a= 12.807(8) ? , b= 14.6904(9) ? , c= 19.0866(11) ? , , α= 107.101(1)̊, β= 105.534(1)̊, γ= 93.529(2)̊, V= 3266.9(3) ? 3, Nd2(C21O16S4) [Nd2 (2,5-TDC) [3]], space group C2/c, a=24.037(2) ? , b=10.0649(8) ? , c=17.963(3) ? , β=128.656(2)̊, γ= 90̊, V=3393.8(7) ? 3 and Er2(C45O32S6) [Er2 (2,5-TDC) [4]], space group Pbam, a=20.9870(15) ? , b=17.1420(12) ? , …

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Characterization Of Intracranial Pulsatility In A Rat Model Of Communicating Hydrocephalus: An Mri And Two-Photon Microscopy Study, Shams Rashid Dec 2011

Characterization Of Intracranial Pulsatility In A Rat Model Of Communicating Hydrocephalus: An Mri And Two-Photon Microscopy Study, Shams Rashid

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Introduction Communicating hydrocephalus (CH) is a severe neurodegenerative disorder characterized by an increased volume of cerebrospinal fluid (CSF) within enlarged cerebral ventricles. Previous studies have found that pulsatile CSF flow in the human cerebral aqueduct is elevated in CH, and have suggested that the causes of CH may be related to this increased pulsatility, as opposed to the traditionally accepted view of CSF malabsorption at the arachnoid villi. However, this has yet to be proven. In this dissertation, our goal was to investigate the significance of elevated aqueductal pulsatility in CH. We hypothesized that pulsatile CSF flow is a significant …

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