Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (783)
- Social and Behavioral Sciences (648)
- Life Sciences (513)
- Physical Sciences and Mathematics (501)
- Medicine and Health Sciences (458)
-
- Arts and Humanities (334)
- Psychology (253)
- Education (211)
- Mechanical Engineering (161)
- Civil and Environmental Engineering (142)
- Chemistry (128)
- Music (115)
- Chemical Engineering (113)
- Electrical and Computer Engineering (110)
- Business (94)
- Environmental Sciences (92)
- Earth Sciences (90)
- Civil Engineering (84)
- Materials Science and Engineering (83)
- Public Health (81)
- Music Performance (80)
- Communication (79)
- Computer Sciences (79)
- Nursing (79)
- Computer Engineering (77)
- Animal Sciences (75)
- History (75)
- Operations Research, Systems Engineering and Industrial Engineering (75)
- Neuroscience and Neurobiology (73)
- Ecology and Evolutionary Biology (67)
- Keyword
-
- Mechanical engineering (476)
- Electrical engineering (282)
- Civil engineering (254)
- Computer science (249)
- Forestry (156)
-
- Chemical engineering (152)
- Clinical psychology (152)
- Ecology (130)
- Behavioral psychology (116)
- Petroleum engineering (113)
- Aerospace engineering (112)
- Industrial engineering (112)
- Higher education (108)
- Economics (103)
- Environmental engineering (99)
- Geology (99)
- Animal sciences (97)
- Materials science (95)
- Molecular biology (94)
- Public health (90)
- Aquatic sciences (88)
- Mining engineering (88)
- Educational technology (86)
- Energy (84)
- Environmental science (84)
- Developmental psychology (83)
- Educational psychology (82)
- Dentistry (78)
- Machine Learning (75)
- Social psychology (71)
- Publication Year
- File Type
Articles 7591 - 7620 of 11969
Full-Text Articles in Entire DC Network
A Professional Development School Partnership: A Close Look At Professional Growth Opportunities., Sherry S. Hetzel
A Professional Development School Partnership: A Close Look At Professional Growth Opportunities., Sherry S. Hetzel
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this study, teacher candidates, mentor teachers, school principals, and university educators participated in interviews revealing their personal perceptions of the impact of the professional development component that exists as part of the Professional Development School partnership between the local university and four elementary schools. The participant dialogues were analyzed and coded in search of themes prevalent in the perceptions and voices of selected participants which represented all levels of the PDS partnership. The main relevance of the study was to provide insight and new understandings of the professional growth opportunities that occur in the partnership. The study addressed the …
"Divided Into Double Parts" Race, Gender, And The Double In Books 1-3 Of Spenser’S The Faerie Queene, Rachel N. Holmberg
"Divided Into Double Parts" Race, Gender, And The Double In Books 1-3 Of Spenser’S The Faerie Queene, Rachel N. Holmberg
Graduate Theses, Dissertations, and Problem Reports (ETD)
In the first canto of Book 1 of Spenser's The Faerie Queene, Archimago divides Redcrosse and Una "into double parts," creating the impression that they are not just divided from each other, but divided from themselves. While this is the first time the phrase "divided into double parts" is mentioned, the theme of division and doubling has already appeared in the text. Indeed, this kind of thematic echo, or doubling, is characteristic of Spenser's work. My dissertation argues that only when we are seeing double, do we recognize the unity in The Faerie Queene . The concept of decomposition allows …
The Human Experience: Changing Perspectives In Math Education., Sarah J. Selmer
The Human Experience: Changing Perspectives In Math Education., Sarah J. Selmer
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study focused on my personal experiences enhanced by the experiences of the participants as they exist within their programs of math education at West Virginia University. This research, a phenomenological study based on existential hermeneutical methodology offers a lens from which to view authentic learning explored through the theoretical framework of Paulo Freire, Parker Palmer, and the INTASC principles. I interviewed three preservice secondary math teachers with depth. Following, I used an interpretive framework to analyze the data.
Evaluation Of Heavy-Duty Engine Exhaust Hydrocarbon And Non-Methane Hydrocarbon Analysis Methods, Abishek Muralidharan
Evaluation Of Heavy-Duty Engine Exhaust Hydrocarbon And Non-Methane Hydrocarbon Analysis Methods, Abishek Muralidharan
Graduate Theses, Dissertations, and Problem Reports (ETD)
The harmful environmental and health effects of automobile exhaust constituents have necessitated their regulation in many countries. The constituents of concern from diesel fueled engines are oxides of nitrogen (NOx), hydrocarbons (HC), carbon monoxide (CO) and particulate matter. Hydrocarbons combine with the oxides of nitrogen in a photochemical reaction, aided by sunlight, to form ozone which is a major constituent of smog. However methane does not aid in smog formation and is excluded from the present United States on-road hydrocarbon regulation.;Flame ionization detectors (FID) are the preferred detectors for hydrocarbon measurement from compression ignition internal combustion engines. Regulatory requirement for …
Use Of Native Seed Mixtures To Improve Erosion Control And Wildlife Habitat On Log Landings Following Timber Harvest In The Upper Elk Watershed Of West Virginia, Lisa R. Tager
Graduate Theses, Dissertations, and Problem Reports (ETD)
Foresters in West Virginia follow BMP guidelines by reseeding retired log landings with inexpensive grasses that quickly provide erosion control. However, these grasses typically are not native nor do they provide high quality forage for wildlife. I developed 3 native seed mixtures for log landing reclamation that would maintain sediment control, as well as enhance wildlife habitat. These mixtures included an erosion control mixture, a wildlife mixture, and a wildflower mixture. I assessed sediment control, biomass production, vegetation structure, forage quality, and small mammal usage of my native mixtures and a commonly used, nonnative traditional mixture in 2005 and 2006. …
Three-Dimensional, High Resolution, Computerized Ionospheric Tomographic Imaging And Computational Modeling Of An Artificial Ionospheric Cavity, Craig A. Selcher
Three-Dimensional, High Resolution, Computerized Ionospheric Tomographic Imaging And Computational Modeling Of An Artificial Ionospheric Cavity, Craig A. Selcher
Graduate Theses, Dissertations, and Problem Reports (ETD)
Tomographic techniques use line integral measurements to reconstruct local values of the measured parameter. These techniques have been applied to the ionosphere by using radio transmissions to measure the integral of electron density between a satellite and a chain of ground-based receiving stations. The resultant reconstructions form a two-dimensional map of the electron density in the plane of the satellite/receiver chain. Insufficient quantity of receivers and not having a complete range of accessible look angles with the available receivers are responsible for the non-uniqueness in the reconstructions. The limited look angle problem can be alleviated by making use of alternative …
Expression Profiling Of Oocyte Specific Genes, Transcription Factors And Micrornas During Early Embryonic Development In Rainbow Trout (Onchorhyncus Mykiss), Raghuveer K. Ramachandra
Expression Profiling Of Oocyte Specific Genes, Transcription Factors And Micrornas During Early Embryonic Development In Rainbow Trout (Onchorhyncus Mykiss), Raghuveer K. Ramachandra
Graduate Theses, Dissertations, and Problem Reports (ETD)
Genes specifically expressed in oocytes are important for the development of oocytes and early embryos. By analyzing ESTs from a rainbow trout oocyte cDNA library, we identified a novel EST sequence that does not show homology to any sequences in the GenBank. Analysis of tissue distribution by RT-PCR revealed that this gene was only expressed in unfertilized oocytes. Sequencing of the EST clone identified a cDNA of 3163 bp. Northern blot analysis showed the novel gene has a single transcript of 3.4 kb. Additional 5' sequence was obtained by 5' RACE, extending the novel cDNA to 3333 bp. Analysis of …
Three Essays On Corporate Liquidity, Financial Distress And Equity Returns, Fang Wang
Three Essays On Corporate Liquidity, Financial Distress And Equity Returns, Fang Wang
Graduate Theses, Dissertations, and Problem Reports (ETD)
The three essays in this dissertation study the impact of corporate liquidity on a firm's value, how corporate liquidity affects the probability of financial distress and equity returns, and whether corporate liquidity represents an idiosyncratic risk, or serves as a priced risk factor.;The first essay examines the relationship between corporate liquidity and equity returns for individual firms. It is found that firms holding more liquid assets have significantly higher equity returns. This positive relationship between corporate liquidity and equity returns is more pronounced among firms with financial constraints. In addition, firms expecting volatile cash flows stock more cash for precautionary …
Multivariable Robust Control Of A Simulated Hybrid Solid Oxide Fuel Cell Gas Turbine Plant, Alex Tsai
Multivariable Robust Control Of A Simulated Hybrid Solid Oxide Fuel Cell Gas Turbine Plant, Alex Tsai
Graduate Theses, Dissertations, and Problem Reports (ETD)
This work presents a systematic approach to the multivariable robust control of a hybrid fuel cell gas turbine plant. The hybrid configuration under investigation built by the National Energy Technology Laboratory comprises a physical simulation of a 300kW fuel cell coupled to a 120kW auxiliary power unit single spool gas turbine. The public facility provides for the testing and simulation of different fuel cell models that in turn help identify the key difficulties encountered in the transient operation of such systems. An empirical model of the built facility comprising a simulated fuel cell cathode volume and balance of plant components …
Modeling Sediment Movement In Forested Watersheds Using Hill-Slope Attributes, Gregory W. Hamons
Modeling Sediment Movement In Forested Watersheds Using Hill-Slope Attributes, Gregory W. Hamons
Graduate Theses, Dissertations, and Problem Reports (ETD)
The amount of sediment delivered to stream channels and the determination of the topographical attributes responsible for the origination and transfer of sediment were investigated in a central Appalachian mixed hardwood forest from 2002 through 2005. Two study watersheds were chosen within the Indian Run watershed in north central West Virginia. One remained undisturbed (control) and the other underwent road construction and tree harvesting operations (treatment). Sediment samples were collected from silt fences which were installed along both sides of the stream channels in both watersheds to ensure all sediment material delivered from adjacent hill-slopes was captured and collected. Sediment …
Capacity -Based Parameter Optimization Of Bandwidth Constrained Cpm, Rohit Iyer Seshadri
Capacity -Based Parameter Optimization Of Bandwidth Constrained Cpm, Rohit Iyer Seshadri
Graduate Theses, Dissertations, and Problem Reports (ETD)
Continuous phase modulation (CPM) is an attractive modulation choice for bandwidth limited systems due to its small side lobes, fast spectral decay and the ability to be noncoherently detected. Furthermore, the constant envelope property of CPM permits highly power efficient amplification. The design of bit-interleaved coded continuous phase modulation is characterized by the code rate, modulation order, modulation index, and pulse shape. This dissertation outlines a methodology for determining the optimal values of these parameters under bandwidth and receiver complexity constraints. The cost function used to drive the optimization is the information-theoretic minimum ratio of energy-per-bit to noise-spectral density found …
Nonlinear Approximation Using Blaschke Polynomials, Daniel Van Vliet
Nonlinear Approximation Using Blaschke Polynomials, Daniel Van Vliet
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation, entitled Nonlinear Approximation Using Blaschke Polynomials, is motivated by questions arising from Empirical Mode Decomposition (EMD). EMD is a signal processing method which decomposes input signals into components called intrinsic mode functions (IMFs). These IMFs often have the desirable property that the instantaneous frequency of their analytic signals is positive. However, this is not always the case.;The first two chapters are introductions to approximation in general, and Empirical Mode Decomposition, respectively.;The third chapter presents a characterization of which analytic signals have the property of non-negative instantaneous frequency. These 'analytic signals with non-negative instantaneous frequency' (ASNIFs) are described using …
Reproductive Consequences Of Exposure To Sediment Extracts From The South Branch Of The Potomac River On Japanese Medaka (Oryzias Latipes), Seth R. Davis
Graduate Theses, Dissertations, and Problem Reports (ETD)
An intersex condition, defined as the presence of oocytes in the testes of male gonochoristic fish, has been observed in smallmouth bass in the South Branch of the Potomac River, West Virginia, which indicates exposure to exogenous estrogens. Endocrine disrupting chemicals (EDC's) are generally hydrophobic and would tend to be found within the sediment of aquatic environments. Few studies have attempted to show the effects of exposure to EDC's on fish using sediment chemical extracts. We have developed a mass sediment extraction technique using 2 solvents (hexane, ethyl acetate:acetone 50:50) to determine the effects of extracted chemicals from three sites …
Determination Of The Nutritional Value, Protein Quality And Safety Of Krill Protein Concentrate Isolated Using An Isolelectric Solubilization/Precipitation Technique, Joseph Christopher Gigliotti
Determination Of The Nutritional Value, Protein Quality And Safety Of Krill Protein Concentrate Isolated Using An Isolelectric Solubilization/Precipitation Technique, Joseph Christopher Gigliotti
Graduate Theses, Dissertations, and Problem Reports (ETD)
Despite its abundance and nutritional value, krill has not been widely utilized for human consumption due to the lack of proper technology for protein recovery. The study objectives were to isolate krill protein concentrate (KPC) and to determine the nutritional value, health benefits, and safety of KPC for human consumption. Proximate analysis indicated KPC on a dry basis is composed of ∼78% protein and ∼8% fat of which ∼27% are omega-3 polyunsaturated fatty acids (o-3 PUFAs). The amino acid composition of KPC indicated that all nine essential amino acids were present in amounts that met the requirements for adult humans …
Attitudes Of 4-H Club Leaders Toward Volunteer Training In West Virginia, Jennifer Post
Attitudes Of 4-H Club Leaders Toward Volunteer Training In West Virginia, Jennifer Post
Graduate Theses, Dissertations, and Problem Reports (ETD)
Volunteers are essential to the 4-H program. This study was conducted to determine why individuals volunteer for 4-H, how volunteers feel towards the training they are offered, what the training needs of 4-H volunteers were, and the methods 4-H volunteers prefer to receive training. A questionnaire was sent to 260 volunteer club leaders in 27 counties in the state of West Virginia. 4-H volunteers have multiple reasons for being a volunteer club leader including helping people and working with youth. 4-H volunteer club leaders feel that training is important in becoming a leader and that training is for everyone regardless …
Market Risk Analysis Of Coal Liquefaction, Huan Mei
Market Risk Analysis Of Coal Liquefaction, Huan Mei
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study addresses the risks associated with coal liquefaction using a market risk simulation approach. The study can be divided into four phases: (i) identify the sources of risk, (ii) examine the relationships among different sources that cause the risk, (iii) estimate the risk level based on the sources of risk using statistical and financial method and (iv) provide conclusions and recommendations for risk analysis.;Market risk is considered the most important risk for commercial scale coal liquefaction projects and is one of the biggest obstacles to commercialization. This study analyses market risk and discusses methods to lower this type of …
Collective Behavior In Chemical Systems, Aaron J. Steele
Collective Behavior In Chemical Systems, Aaron J. Steele
Graduate Theses, Dissertations, and Problem Reports (ETD)
Experiments and simulations of the photosensitive Belousov-Zhabotinsky reaction are used to study collective behavior of simple interacting elements. Two different types of interacting elements are examined. In a network of excitable elements, interactions change the timing of activity of the individual elements. Interacting chemical wave segments form rotational modes or dynamically align due to their mutual interaction. In both cases, interactions result in emergent group behavior.
Choice Among Stimuli In Equivalence Classes, Christina Alligood
Choice Among Stimuli In Equivalence Classes, Christina Alligood
Graduate Theses, Dissertations, and Problem Reports (ETD)
Stability in responding to stimuli within equivalence classes has implications for the maintenance of classes and the ease at which they can be reformed. One way of investigating stability is to examine accuracy and speed of responding as a function of nodal number, or the number of nodes between stimuli in a class. Previous research suggests that subjects respond more quickly and more accurately on relations involving fewer nodes (Fields, Adams, & Verhave, 1989 [May]; Fields, Adams, Verhave, & Newman, 1990; Fields, Adams, & Verhave, 1993; Fields, Landon-Jiminez, Buffington, & Adams, 1995; Spencer & Chase, 1996). A second way to …
Stream Water Quality And Benthic Macroinvertebrate Ecology In A Coal-Mining, Acid-Sensitive Region, George T. Merovich Jr.
Stream Water Quality And Benthic Macroinvertebrate Ecology In A Coal-Mining, Acid-Sensitive Region, George T. Merovich Jr.
Graduate Theses, Dissertations, and Problem Reports (ETD)
Acid mine drainage (AMD) and acid rain are important sources of impairment to streams in the Tygart Valley and Cheat River basins in north central West Virginia, USA. Due to a network of abandoned mined lands and bond forfeiture sites in this coal-mining region, AMD represents severe, but rather localized impacts to water quality. AMD is a consequence of the chemical oxidation of reduced geological minerals (sulfides) usually associated with coal during mining operations. The reactions produce aqueous solutions high in sulfates and dissolved metals when the minerals are exposed to the oxic environment through land disturbance. In addition, the …
Sociodemographic And Health -Related Risks For Loneliness And Outcome Differences By Loneliness Status In A Sample Of Older U.S. Adults, Laurie A. Theeke
Sociodemographic And Health -Related Risks For Loneliness And Outcome Differences By Loneliness Status In A Sample Of Older U.S. Adults, Laurie A. Theeke
Graduate Theses, Dissertations, and Problem Reports (ETD)
Background. Loneliness is a prevalent problem for older adults and has been shown to be associated with negative physical, psychological, and social variables. There has been limited research focusing on the relationship of loneliness to health. There is a gap in the literature when it comes to understanding how the problem of loneliness relates to the health of older adults in the United States.;Purpose. The purpose of this study was to address this gap in the literature through the testing of two models, the first model represented the postulated risks for loneliness and the second model represented the postulated outcomes …
Parsimony-Based Genetic Algorithm For Haplotype Resolution And Block Partitioning, Nadezhda A. Sazonova
Parsimony-Based Genetic Algorithm For Haplotype Resolution And Block Partitioning, Nadezhda A. Sazonova
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation proposes a new algorithm for performing simultaneous haplotype resolution and block partitioning. The algorithm is based on genetic algorithm approach and the parsimonious principle. The multiloculs LD measure (Normalized Entropy Difference) is used as a block identification criterion. The proposed algorithm incorporates missing data is a part of the model and allows blocks of arbitrary length. In addition, the algorithm provides scores for the block boundaries which represent measures of strength of the boundaries at specific positions. The performance of the proposed algorithm was validated by running it on several publicly available data sets including the HapMap data …
Dna Damage Response Activated By Anti-Cancer Agent, Irofulven, Timothy D. Wiltshire
Dna Damage Response Activated By Anti-Cancer Agent, Irofulven, Timothy D. Wiltshire
Graduate Theses, Dissertations, and Problem Reports (ETD)
The DNA damage response is a complex network of signals that coordinate to protect cells from accumulating mutations that lead to the development of cancer. Upon the introduction of DNA damage from either environmental or endogenous sources, the DNA damage response coordinates the control of cell cycle with DNA repair mechanisms to ensure genomic integrity within the cell. Mutations in proteins in this pathway lead to genomic instability and early onset of cancer. BRCA1 is a protein that plays a critical role in response to DNA damage caused by ionizing radiation and is responsible for approximately 50% of inherited breast …
Bus Transit Equity Among Demographic Groups Considering Monetary And Travel Time Costs, Leonel Medellin
Bus Transit Equity Among Demographic Groups Considering Monetary And Travel Time Costs, Leonel Medellin
Graduate Theses, Dissertations, and Problem Reports (ETD)
The generalized cost of a transit user depends mostly on time and money spent per trip. On the other hand, time and distance determine most of the transit agency's cost to provide service. These are important factors to consider in determining the equity performance of service provided to users of different demographic groups. The purpose of this study is to determine significant statistical differences in resources spent by bus users in two metropolitan areas. The study measures inequality among different socioeconomic groups of users in terms of travel time and money consumed per mile in using the service. Inequality is …
Application Of A Reflective Optical Probe To Measure Solids Fractions In A Circulating Fluidized Bed, Steven M. Seachman
Application Of A Reflective Optical Probe To Measure Solids Fractions In A Circulating Fluidized Bed, Steven M. Seachman
Graduate Theses, Dissertations, and Problem Reports (ETD)
A novel method of extracting localized solids volume fractions from reflective multi-fiber optical probes was developed. The fiber optic probes were originally designed by Vector Scientific, Inc. to measure local solids velocities. The probe measures reflected light from a particle medium which is converted into a voltage. Development of this new method yields two valuable solid flow parameters from a single probe system. The method involves a formulated model with empirical calibrations and three physical bases. The three physical bases are the Conservation Law, Beer-Lambert's Law, and the reflected light intensity from the particle medium. A novel bed depth calibration …
Exploring The Use Of Human Metrology For Biometric Recognition, Nikhil Mallikarjun Reddy Burri
Exploring The Use Of Human Metrology For Biometric Recognition, Nikhil Mallikarjun Reddy Burri
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis explores the possibility of incorporating human body measurements in a biometric framework. While metrological features have been used for identifying persons in the late 19th century, there is limited work in automating this process for surveillance applications. We first establish the relevance of using metrological features in biometric systems by studying two anthropometric data-sets (NASA and NHANES). We then propose a technique to automatically extract a subset of these measurements from a video sequence. A robust segmentation technique (HMMF) to detect moving pixels corresponding to human objects is used in the first stage. Next, we use Active Contours …
User Habitation In Keystroke Dynamics Based Authentication, Qi Cheng
User Habitation In Keystroke Dynamics Based Authentication, Qi Cheng
Graduate Theses, Dissertations, and Problem Reports (ETD)
Most computer systems use usernames and passwords for authentication and access control. For long, password security has been framed as a tradeoff between user experience and password security. Trading off one for the other appears to be an inevitable dilemma for single password based security applications. As a new biometric for authenticating access, keystroke dynamics offers great promises in hardening the password mechanism. Our research first investigate the keystroke dynamics based password security by conducting an incremental study on user's habituation process for keystroke dynamics analysis using two distinct types of passwords. The study shows that (1) long and complex …
Estimation Of Skin Factor By Using Pressure Transient Testing Results Of A Single Rate Well Test, Delal Gunaydin
Estimation Of Skin Factor By Using Pressure Transient Testing Results Of A Single Rate Well Test, Delal Gunaydin
Graduate Theses, Dissertations, and Problem Reports (ETD)
About one-fifth of the natural gas used by Americans each winter comes from natural gas storage sites. Gas storage is the primary means for the gas industry to manage fluctuations in supply and demand. Natural gas can be stored in a variety of ways. Most commonly, it is held in underground formations, in depleted oil or gas reservoirs, or in natural aquifers.;Many gas storage wells show a decline in deliverability as a function of time due to several damage mechanisms. The remedial operations such as stimulation and workovers are used to restore the loss in deliverability and to enhance the …
Quality Of Iris Segmentation As A Predictor Of Verification Performance, Syvale Lee
Quality Of Iris Segmentation As A Predictor Of Verification Performance, Syvale Lee
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this thesis, the accuracy of iris segmentation algorithms will be compared using quality measures based on both homogeneity and heterogeneity of the resulting image regions. After calculation of the quality measures, Principal Component Analysis (PCA) is performed. The resulting pairwise distances between the genuine pairs are compared to the hamming distance scores of the iris templates. The relationship between the two samples will be examined, and curve fitting by least squares regression is shown to be an adequate method of prediction for genuine Hamming distance score. The work proposes a segmentation quality metric that is highly correlated with the …
Experimental Studies Of Electromagnetic Signals To Enhance Radio Imaging Method (Rim), William D. Monaghan
Experimental Studies Of Electromagnetic Signals To Enhance Radio Imaging Method (Rim), William D. Monaghan
Graduate Theses, Dissertations, and Problem Reports (ETD)
Safety and production of coal mining operations could be greatly affected by geologic anomalies such as faults, sandstone intrusions, dykes, fracture zones, sudden thinning and severe undulation of the coal seam. Since most of these geologic anomalies in coal seams effect the attenuation rate of electromagnetic signal that passes through them, the radio imaging method (RIM), using a signal in the kilohertz range, is capable of locating the zones of geologic anomalies in underground coal mines with the help of tomographic reconstruction programs. RIM technology is a promising geophysical tool for exploring the geologic anomalies ahead of modern longwall faces, …
Stand Dynamics Of An Old-Growth Hemlock-Hardwood Forest In West Virginia, Nathan R. Beane
Stand Dynamics Of An Old-Growth Hemlock-Hardwood Forest In West Virginia, Nathan R. Beane
Graduate Theses, Dissertations, and Problem Reports (ETD)
Cathedral State Park (CSP) is a 54-ha, old-growth, hemlock-hardwood forest located in the central Appalachian Mountains of West Virginia. Trees larger than 100 cm diameter at breast height (dbh) and 35 m tall are common. Hemlock woolly adelgid (HWA) (Adelges tsugae Annand) is an exotic insect that currently threatens eastern hemlock (Tsuga canadensis (L.) Carr.) throughout its native range, and was found in CSP in 2002. In 2006, field plots established in 2000 were remeasured to assess adelgid-induced changes to forest structure and species composition. The herbaceous plant community was also measured during the 2006 growing season to describe how …