Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (501)
- Engineering (301)
- Chemistry (128)
- Environmental Sciences (92)
- Earth Sciences (90)
-
- Life Sciences (88)
- Social and Behavioral Sciences (84)
- Computer Sciences (79)
- Education (71)
- Physics (67)
- Mechanical Engineering (66)
- Chemical Engineering (59)
- Analytical Chemistry (51)
- Geology (51)
- Electrical and Computer Engineering (47)
- Medicine and Health Sciences (44)
- Astrophysics and Astronomy (41)
- Artificial Intelligence and Robotics (40)
- Computer Engineering (39)
- Natural Resources and Conservation (38)
- Data Science (35)
- Operations Research, Systems Engineering and Industrial Engineering (34)
- Aerospace Engineering (33)
- Mathematics (33)
- Organic Chemistry (31)
- Statistics and Probability (29)
- Civil and Environmental Engineering (27)
- Condensed Matter Physics (27)
- Materials Science and Engineering (27)
- Physical Chemistry (26)
- Keyword
-
- Mechanical engineering (173)
- Electrical engineering (143)
- Computer science (121)
- Civil engineering (69)
- Industrial engineering (65)
-
- Mathematics (60)
- Petroleum engineering (56)
- Machine Learning (51)
- Aerospace engineering (50)
- Mining engineering (42)
- Chemical engineering (35)
- Educational technology (32)
- Energy (32)
- Artificial intelligence (31)
- Educational psychology (30)
- Higher education (30)
- Materials science (27)
- Educational administration (26)
- Curriculum development (23)
- Teacher education (23)
- Machine learning (22)
- Automotive engineering (21)
- Forestry (21)
- Biomedical engineering (20)
- Economics (20)
- Environmental engineering (20)
- Geology (20)
- Deep Learning (18)
- Artificial Intelligence (17)
- Educational leadership (17)
- Publication Year
- File Type
Articles 1441 - 1470 of 2865
Full-Text Articles in Entire DC Network
Civic Education In West Virginia: Guidelines And State Standards In A Case Study, Carolyn Jackson Brejwo
Civic Education In West Virginia: Guidelines And State Standards In A Case Study, Carolyn Jackson Brejwo
Graduate Theses, Dissertations, and Problem Reports (ETD)
Civic teachers are members of their community and are responsible for preparing their students to be future citizens. West Virginia is one of nine states that requires students to pass a class whose title includes the word "civic." All 12th grade students in the state must take a year long civic education course. The goal for the course is offered by the state in published documents. The documents lay out a course that is guided in part by the definition of civic education offered by the National Council for Social Studies (NCSS). West Virginia offers a much broader and deeper …
Evaluation Of Methods For Measuring Aggregate Specific Gravity, Rajasekhar Bikya
Evaluation Of Methods For Measuring Aggregate Specific Gravity, Rajasekhar Bikya
Graduate Theses, Dissertations, and Problem Reports (ETD)
The current American Association of State Highway and Transportation Officials (AASHTO) procedures for determining the aggregate specific gravities and absorption values are time consuming and hence are not appropriate for quality control processes. These methods are not repeatable too which is another issue with the standard test methods. The standard AASHTO method for fine aggregates has problems with angular and absorptive materials. Due to this problem several agencies have developed alternative methods. Correct measurement of the specific gravity and absorption play a crucial role in the design of hot mix asphalt (HMA) mixtures. Improper measurements can lead to poor asphalt …
Flexibility And Transient Dynamic Analysis Of A Slider-Crank Deployment Mechanism, Andres Cavezza
Flexibility And Transient Dynamic Analysis Of A Slider-Crank Deployment Mechanism, Andres Cavezza
Graduate Theses, Dissertations, and Problem Reports (ETD)
High Speed Deployment Mechanisms (HSDM) have become essential and indispensable for specific applications in industrial and aerospace sectors. However, the field of High Speed Deployment Mechanisms is still not completely explored in many areas; the holistic analysis of HSDM reveals a lack of information about its, classification, analysis and design considerations. A research was conducted to generate a systematic approach addressing the issues mentioned above. In the beginning of this research, a methodology is presented to perform the kinematic and dynamic analyses of a Slider-Crank Deployment Mechanism; this method is based on the Lagrange Multipliers approach. The analyses of position, …
The Application Of Single Porosity Model To Predict The Performance Of The Low Permeability Naturally Fractured Formations, Martial Hermann Tchuindjang Yatchou
The Application Of Single Porosity Model To Predict The Performance Of The Low Permeability Naturally Fractured Formations, Martial Hermann Tchuindjang Yatchou
Graduate Theses, Dissertations, and Problem Reports (ETD)
Natural gas extraction from shale is currently an expensive endeavor due to the tight reservoir rock with nano-darcy permeability. New technology in the form of horizontal drilling and hydraulic fracturing (fracturing through the use of high pressure liquids) has overcome the flow capacity problem of shale to achieve economic production. The low permeability shale formations, such Marcellus Shale, contain a natural fracture system with extremely low permeability. The characteristics of the natural fracture system are non-existent; therefore the application of single porosity model to predict the production performance of the shale formations can reduce the need for detail fracture system …
Optimization Models For Locating Cross-Docks Under Capacity Uncertainty, Anshul Soanpet
Optimization Models For Locating Cross-Docks Under Capacity Uncertainty, Anshul Soanpet
Graduate Theses, Dissertations, and Problem Reports (ETD)
The objective of this thesis is to develop mathematical models for locating cross-docks in a supply chain. Cross-docking is a strategy which can help consolidate the goods in the supply chain and save costs by reducing the number of truck trips. In this thesis four optimization models were developed. First two optimization models termed Model A and Model B were deterministic models. The goal of model A was to choose exactly P locations to locate cross-docks so that the transportation and handling costs are minimized. The goal of model B is to locate as many cross-docks as needed so that …
Modified Delphi Investigation Of Lesson Planning Concepts For Physical Education Teacher Education, Jack W. Sager
Modified Delphi Investigation Of Lesson Planning Concepts For Physical Education Teacher Education, Jack W. Sager
Graduate Theses, Dissertations, and Problem Reports (ETD)
Improving the methods of instructing future educators, through program evaluation and improvement, should be a goal of all teacher education programs. In physical education, the National Association for Sport & Physical Education created standards for initial preparation of physical education teachers. The six standards for preparation include Planning and Implementation, which include tenants pertaining to unit and lesson planning. Despite the significant importance of planning in the growth of preservice teachers as they complete a Physical Education Teacher Education (PETE) program, there is currently no consensus on what concepts to be included in lesson planning for physical education teacher education. …
Control Scheme For Cathode Airflow During Load Swings In A Solid Oxide Fuel Cell/Gas Turbine System, Megan Rae Gorrell
Control Scheme For Cathode Airflow During Load Swings In A Solid Oxide Fuel Cell/Gas Turbine System, Megan Rae Gorrell
Graduate Theses, Dissertations, and Problem Reports (ETD)
Control and management of cathode airflow in a solid oxide fuel cell gas turbine hybrid power system was analyzed using the Hybrid Performance (HyPer) hardware simulation at the National Energy Technology Laboratory (NETL), U.S. Department of Energy. This work delves into previously unexplored operating practices for HyPer, via simultaneous manipulation of bypass valves and the electric load on the generator. The work is preparatory to the development of a Multi-Input, Multi-Output (MIMO) controller for HyPer. A factorial design of experiments was conducted to acquire data for 81 different combinations of the manipulated variables, which consisted of three air flow control …
Development Of A Low-Cost Robotics Platform That Facilitates The Enhancement Of Microcomputer Structures And Interfacing Learning Objectives, Justin Ryan Morris
Development Of A Low-Cost Robotics Platform That Facilitates The Enhancement Of Microcomputer Structures And Interfacing Learning Objectives, Justin Ryan Morris
Graduate Theses, Dissertations, and Problem Reports (ETD)
Robotics has become a common educational tool to teach basic concepts in mathematics, science, engineering, technology, world affairs, and much more. Programs such as For Inspiration and Recognition of Science and Technology (FIRST) robotics are demonstrating that the recipe for student inspiration and learning involves robotics, problem solving, teamwork, and friendly competition. The successes of FIRST robotics programs and results from universities that have integrated robotics platforms into their curriculum provide evidence that infusing robotics platforms and curriculum into engineering departments better their capabilities and increase attractiveness to current and future students. This effort details the design and development of …
Analysis And Detection Of Fingerprint Creases, Olaoluwa Peter Laseinde
Analysis And Detection Of Fingerprint Creases, Olaoluwa Peter Laseinde
Graduate Theses, Dissertations, and Problem Reports (ETD)
Fingerprint is a biometric trait that is widely used for human identification and verification. Most fingerprint biometric systems make use of certain salient features on the fingerprint, including minutiae points, pores, and singular points, for comparing two fingerprint images. In this work, we explore the possibility of using fingerprint creases for comparing two fingerprints. Creases can be described as white lines or scars on a fingerprint image. Recent studies have determined that some creases are genetically influenced although the origin of creases has not been completely characterized. While no published work exists for crease matching, some studies have explored the …
Onboard Parameter Identification For A Small Uav, Amanda K. Mcgrail
Onboard Parameter Identification For A Small Uav, Amanda K. Mcgrail
Graduate Theses, Dissertations, and Problem Reports (ETD)
One of the main research focus areas of the WVU Flight Control Systems Laboratory (FCSL) is the increase of flight safety through the implementation of fault tolerant control laws. For some fault tolerant flight control approaches with adaptive control laws, the availability of accurate post failure aircraft models improves performance. While look-up tables of aircraft models can be created for failure conditions, they may fail to account for all possible failure scenarios. Thus, a real-time parameter identification program eliminates the need to have predefined models for all potential failure scenarios. The goal of this research was to identify the dimensional …
The Effects Of The Environmental Design Instruction On The Students' Gymnastics Skill Refinement, Han Chen
The Effects Of The Environmental Design Instruction On The Students' Gymnastics Skill Refinement, Han Chen
Graduate Theses, Dissertations, and Problem Reports (ETD)
The study compared the effects of Direct Instruction (DI) with DI+Environmental Design Instruction (EDI) on the refinement of both simple and difficult gymnastics skills refinement. Four boys aged six to eight with two years of gymnastics training experiences participated in the simple skill experiment (running tuck jump on the springboard). Four boys aged 11 to 13 with more than three years of gymnastics training experiences participated in the difficult skill experiment (mushroom circles). Three dependent variables were measured in the experiment of running tuck jump and they were: (1) the participant's hip angle while they jumped at the highest point, …
Development Of A Software Tool To Estimate Airfoil Feature Variations, Prasheel Chaganti
Development Of A Software Tool To Estimate Airfoil Feature Variations, Prasheel Chaganti
Graduate Theses, Dissertations, and Problem Reports (ETD)
The objective of this thesis is to design and develop a software tool that analyzes the incoming raw material inspection data obtained from a Coordinate Measuring Machine (CMM) and estimates feature variation created within the manufacturing process i.e. from the raw material stage to finished stage. This tool is used not only to disposition whether a lot is conforming or non-conforming, but also to provide the root installation operators an ideal N-angle, Leading Edge Angle (LEA) and Trailing Edge Angle (TEA) target that maximize the yield of the lot after further processing. The tool also helps reduce the number of …
Exploring The Experiences Of Successful First-Generation College Students At Selected Community Colleges, Jennifer Ann Waters
Exploring The Experiences Of Successful First-Generation College Students At Selected Community Colleges, Jennifer Ann Waters
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to examine how successful FGCS in community colleges addressed challenges they face in order to complete their degree programs. This study was based upon Titno's (1993) Model of Student Departure and explored what methods and programs were most beneficial in helping FGCS overcome the challenges they faced as they worked on their degrees. This study explored each of the three categories discussed: (a) responsive social support; (b) financial preparation and acquisition; and (c) proactive academic preparation and encouragement through the use of semi-structured individual interviews. A more thorough understanding of how to assist FGCS …
Reservoir Heterogeneity In A Carbon Sequestration Target: The Donovan Sand Member Of The Rodessa Formation, Citronelle Field, Alabama, Keith Coffindaffer
Reservoir Heterogeneity In A Carbon Sequestration Target: The Donovan Sand Member Of The Rodessa Formation, Citronelle Field, Alabama, Keith Coffindaffer
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Citronelle field, located in Mobile County, Alabama, has been chosen as a U.S. Department of Energy (DOE) Carbon Capture and Storage (CCS) pilot site, and supercritical CO2 has been injected for the combined purposes of long-term storage testing and enhanced oil recovery (EOR). The target formation for injection is the Early Cretaceous Donovan Sand of the Rodessa Formation, and is characterized by discontinuous fine- to medium-grained, heterogeneous arkosic fluvial sandstones interbedded with fissile mudstones and micaceous silts. Based upon core analysis of the Donovan Sand, depofacies indicate a fluvio-deltaic/estuarine depositional environment for the Donovan Sand. Probable sources of the …
Real-Time Load Frequency Control For An Isolated Microgrid System, Moataz A. Elbaz
Real-Time Load Frequency Control For An Isolated Microgrid System, Moataz A. Elbaz
Graduate Theses, Dissertations, and Problem Reports (ETD)
Microgrids are small power grids with distinct operation characteristics; they can operate either independently or connected to larger grids, and usually a significant proportion of their generation capacity is comprised from intermittent resources such as solar and wind power generations. Power grids, in general, must operate such that the power generation and power demand are balanced at all times. Such balance is attained by implementing a Load Frequency Control (LFC) mechanism. The goal of LFC in a microgrid system is to maintain the system's frequency within acceptable limits around nominal value under various conditions, such as fluctuating power demand and/or …
Systems With Session-Based Workloads: Assessing Performance And Reliability, Nikola Janevski
Systems With Session-Based Workloads: Assessing Performance And Reliability, Nikola Janevski
Graduate Theses, Dissertations, and Problem Reports (ETD)
Many systems, including the Web and Software as a Service (SaaS), are best characterized with session-based workloads. Empirical studies have shown that Web session arrivals exhibit long range dependence and that the number of requests in a session is well modeled with skewed or heavy-tailed distributions. However, models that account for session workloads characterized by empirically observed phenomena and studies of their impact on performance and reliability metrics are lacking.;For assessing performance, we use a feedback queue to account for session-based workloads in a physically meaningful way and use simulation to analyze the behavior of the Web system under Long …
Evaluation Of The Potential For Detection And Classification Of Ailanthus Altissima (Tree Of Heaven) Using Lidar Data, Cassidy Robert Rhea
Evaluation Of The Potential For Detection And Classification Of Ailanthus Altissima (Tree Of Heaven) Using Lidar Data, Cassidy Robert Rhea
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis compares methods for delineating and classifying the invasive, exotic tree Ailanthus altissima (tree of heaven), using attributes derived entirely from light detection and ranging (LiDAR) data. The accuracy of two image segmentation methods: 1) Tree variable window program (TreeVaW) and 2) watershed segmentation, and three classifications schemes: 1) classification and regression trees (CART) 2) artificial neural networks (NN) and 3) support vector machines (SVM) are compared. I found that generally the watershed segmentation method produced better segmentation results than the TreeVaW segmentation method, and that the CART classification was the most accurate overall classifier, although the SVM classification …
Investigating Changes In Productivity Of An Old Growth Juniperus Stand: A Physiological And Isotopic Approach, Scott E. Spal
Investigating Changes In Productivity Of An Old Growth Juniperus Stand: A Physiological And Isotopic Approach, Scott E. Spal
Graduate Theses, Dissertations, and Problem Reports (ETD)
Forest ecosystems play a central role in the global carbon cycle and are a major part of the terrestrial carbon sink. For more accurate predictions of terrestrial C sequestration models require a mechanistic understanding of how carbon cycling in trees and forests responds to atmospheric CO 2, temperature, and precipitation. With this comes a need for a greater understanding of the physiological mechanisms involved with changes in forest productivity as trees and forests age. This research used an old growth stand of Juniperus virginiana (Eastern red cedar) in the Central Appalachian Mountains of West Virginia to examine how carbon assimilation …
Land As A Renewable Resource: Integrating Climate, Energy, And Profitability Goals Using An Agent-Based Netlogo Model, Inocencio Rodriguez
Land As A Renewable Resource: Integrating Climate, Energy, And Profitability Goals Using An Agent-Based Netlogo Model, Inocencio Rodriguez
Graduate Theses, Dissertations, and Problem Reports (ETD)
The objectives of this study center over the course of the beef production life cycle as a management strategy to optimize the financial and natural resource endowment on farms at the county level based on the data available. Although the application is to West Virginia, implications can be derived for other areas with similar resource endowments. The beef farms located in adjacent locations within a county are identified as suppliers of inputs to the farm of interest (or contracting farm) in order to provide the basic foundation for agglomeration economies.;Both an intertemporal component and a spatial component are involved since …
Integer Flows And Modulo Orientations, Yezhou Wu
Integer Flows And Modulo Orientations, Yezhou Wu
Graduate Theses, Dissertations, and Problem Reports (ETD)
Tutte's 3-flow conjecture (1970's) states that every 4-edge-connected graph admits a nowhere-zero 3-flow. A graph G admits a nowhere-zero 3-flow if and only if G has an orientation such that the out-degree equals the in-degree modulo 3 for every vertex. In the 1980ies Jaeger suggested some related conjectures. The generalized conjecture to modulo k-orientations, called circular flow conjecture, says that, for every odd natural number k, every (2k-2)-edge-connected graph has an orientation such that the out-degree equals the in-degree modulo k for every vertex. And the weaker conjecture he made, known as the weak 3-flow conjecture where he suggests that …
Group Connectivity Of Graphs, Senmei Yao
Group Connectivity Of Graphs, Senmei Yao
Graduate Theses, Dissertations, and Problem Reports (ETD)
Tutte introduced the theory of nowhere-zero flows and showed that a plane graph G has a face k-coloring if and only if G has a nowhere-zero A-flow, for any Abelian group A with |A| ≥ k. In 1992 Jaeger et al. [16] extended nowhere-zero flows to group connectivity of graphs: given an orientation D of a graph G, if for any b: V (G) A with sumv∈ V(G ) b(v) = 0, there always exists a map ƒ: E(G) A - {lcub}0{rcub}, such that at each v ∈ V(G), e=vw isdirectedfrom vtow fe- e=uvi sdirectedfrom utov fe=b v in A, …
Perfect Matching And Circuit Cover Of Graphs, Dong Ye
Perfect Matching And Circuit Cover Of Graphs, Dong Ye
Graduate Theses, Dissertations, and Problem Reports (ETD)
The research of my dissertation is motivated by the Circuit Double Cover Conjecture due to Szekeres and independently Seymour, that every bridgeless graph G has a family of circuits which covers every edge of G twice. By Fleischner's Splitting Lemma, it suffices to verify the circuit double cover conjecture for bridgeless cubic graphs.;It is well known that every edge-3-colorable cubic graph has a circuit double cover. The structures of edge-3-colorable cubic graphs have strong connections with the circuit double cover conjecture. In chapter two, we consider the structure properties of a special class of edge-3-colorable cubic graphs, which has an …
Driving Cycle Properties And Their Influence On Fuel Consumption And Emissions, Oscar Francisco Delgado-Neira
Driving Cycle Properties And Their Influence On Fuel Consumption And Emissions, Oscar Francisco Delgado-Neira
Graduate Theses, Dissertations, and Problem Reports (ETD)
When developing regulations or preparing emissions inventory models for on-road mobile sources, it is of critical importance to obtain representative values of fuel consumption and emissions rates that accurately represent the vehicle behavior for varying vehicle operation. Unfortunately, fuel consumption and emissions are often only known for a few test cycles which generally represent limited types of vehicle activity. It is known that distance-specific emissions and vehicle fuel consumption strongly depend on the vehicle activity and this dependency causes difficulties when trying to estimate fuel consumption and emissions over different vehicle activity than the original test cycle(s). The central hypothesis …
Optimal Portfolio And Consumption With Transaction Costs, Zheng Zhang
Optimal Portfolio And Consumption With Transaction Costs, Zheng Zhang
Graduate Theses, Dissertations, and Problem Reports (ETD)
In Chapter 1, we study optimal portfolio and consumption with both fixed and proportional transaction costs. For a power utility function we find an explicit solution to the HJB equation governing the no-transaction region. Based on the explicit solution, we formulate a combined stochastic and impulse control problem as a quasi-variational inequality and find the transaction regions, the no-transaction region, and the boundary curves separating them. We show that the explicit solution we find satisfies the verification theorem and it is also a viscosity solution for the quasi-variational inequality. We present numerical results where we compare the various cases of …
A Structured Approach For Facilitating The Implementation Of Iso 50001 Standard In Manufacturing Industry, Kartik Ramamoorthy
A Structured Approach For Facilitating The Implementation Of Iso 50001 Standard In Manufacturing Industry, Kartik Ramamoorthy
Graduate Theses, Dissertations, and Problem Reports (ETD)
Technical solutions and technological changes alone cannot sustain energy saving improvements and promote continual improvement in an organization. Successful bridging between technical and management principles to implement an energy management system would lead to energy savings. To overcome the lack of availability of proper framework to implement an energy management system conforming to the ISO 50001, a standard methodology using flow charts and a software ISO 50001 Analyzer is developed to help facilities get certified by checking if their energy management system complies with the ISO 50001 standard. The major aim of the software is to reduce the degree of …
Artificial Intelligence Assisted History Matching -- Proof Of Concept, Alireza Shahkarami
Artificial Intelligence Assisted History Matching -- Proof Of Concept, Alireza Shahkarami
Graduate Theses, Dissertations, and Problem Reports (ETD)
History matching is the process of adjusting uncertain reservoir parameters until an acceptable match with the measured production data is obtained. Complexity and sub-optimal knowledge of reservoir characteristics makes this process time-consuming with high computational cost. In the past, computer-assisted history matching has attempted to make this process faster; however, the degree of success of these techniques continues to be a subject for debate.;In this study, the objective is to prove and examine the application of a relatively new Artificial Intelligence based technology (Surrogate Reservoir Model -- SRM) to assist the history match process. SRM is a prototype of full-field …
Hot Mix Asphalt Concrete Density, Bulk Specific Gravity, And Permeability, Yu Yan
Hot Mix Asphalt Concrete Density, Bulk Specific Gravity, And Permeability, Yu Yan
Graduate Theses, Dissertations, and Problem Reports (ETD)
Field permeability test using NCAT Permeameter were conducted at four project sites before and after the application of fog seal. Due to the fact that it is difficult to estimate the thickness of pavement tested, instead of permeability, the infiltration rate is calculated to estimate the effectiveness of fog seal on reducing the permeability of pavement.;Cores from I-79, I-64 and Route-19 projects were collected and sent to the WVUATL for bulk specific gravity (Gmb) measurements. According to AASHTO T 166, when the percent of water absorbed by the specimen exceeds 2%, AASHTO T 275 or T 331 should be used …
Failure Behavior Of Pultruded Gfrp Members Under Combined Bending And Torsion, Muhammad Asif Mahmood Qureshi
Failure Behavior Of Pultruded Gfrp Members Under Combined Bending And Torsion, Muhammad Asif Mahmood Qureshi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Glass fiber reinforced polymer (GFRP) composite sections, manufactured through pultrusion process, are known for their high strength-to-weight ratio, corrosion resistance, low thermal conductivity, electric and magnetic transparency, low life cycle cost and ease of fabrication. They are being widely applied in infrastructure systems.;The load response of thin-walled GFRP composite sections is different from that of isotropic slender members. For instance, stress variation exists across the wall thickness and the FRP members are more prone to warping and local buckling including shear-lag. The literature survey revealed that the response of pultruded GFRP sections under combined bending and torsion has not yet …
Effectiveness Of A Flanged And Unflanged Small Rectangular Capturing Hood, Stephen Philip Kasberger
Effectiveness Of A Flanged And Unflanged Small Rectangular Capturing Hood, Stephen Philip Kasberger
Graduate Theses, Dissertations, and Problem Reports (ETD)
Capturing hoods are an important tool for protecting workers from hazardous airborne exposures and often preferred because their small sizes offers little interference to the worker or process. Current ventilation guidelines for capturing hood assume that exceeding a recommended capture velocity ensures an acceptable degree of effectiveness. That assumption has little basis in scientific studies. This study investigated the effectiveness of a 6 inch by 12 inch rectangular capturing hood centered on a work table with a manikin acting as a surrogate for a worker.;The study utilized a tracer gas (Freon-134a) to evaluate effectiveness of a capturing hood at three …
Effect Of Seat Orientation On Ingress/Egress Joint Kinematics And Reach Envelope, Christopher W. Moore
Effect Of Seat Orientation On Ingress/Egress Joint Kinematics And Reach Envelope, Christopher W. Moore
Graduate Theses, Dissertations, and Problem Reports (ETD)
Crew modules use recumbent seats to sustain increased acceleration in the upright direction. Entry (ingress) and exit (egress) of such seats require different techniques. Most of the existing research on ingress and egress biomechanics was done using vertically mounted automobile seats. In this study, ingress and egress and planar reach motions performed using seats mounted in vertical and horizontal orientations were evaluated. An eight camera (MX-13 series) optical motion analysis system (Vicon, Nexus, UK) was used to record the 3D kinematic data. Ten healthy male participants performed ingress and egress motions using the following three seat orientations, while reach tasks …