Dissertations / Theses on the topic 'Task analysis'
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Ard, Michael Colin. "On the origin of a response time underadditivity by means of cross-modal task switching, or the redundancy of operations in the configuration of task sets for cross-modal shifts." Diss., [La Jolla] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p3366481.
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Thesis (Ph. D.)--University of California, San Diego, 2009.Title from first page of PDF file (viewed August 20, 2009). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 178-184).
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Astiasuinzarra, Bereciartua Txomin. "COMPILATION OF TASK ANALYSIS METHODS: PRACTICAL APPROACH OF HIERARCHICAL TASK ANALYSIS, COGNITIVE WORK ANALYSYS AND GOALS, OPERATIONS, METHODS AND SELECTION RULES." Thesis, KTH, Industriell ekonomi och organisation (Inst.), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91369.
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Progressively Human Factor methods are becoming more and more relevant in companies. Companies are more conscious about how affect work environment in workers and those in productivity. Globalization also affect to the companies given that they have to be more competitive, effective and flexible. In this context, Human Factors carry out very important role. With this perspective, this thesis is oriented to get acquainted some of the different methods of Human Factors. Human Factor's area is very extensive, for this reason in the thesis are included some of the most important methods. The main objective is to achieve a general perspective, a practical perspective. According with the previous paragraph, in this thesis the most relevant variables and constraints are analyzed and compared. It is theoretical based; different papers, articles and books are the platform of the thesis. The most prestigious authors’ works are included. Hierarchical Task Analysis (HTA), Cognitive Work Analysis (CWA) and Goal, Operator, Method, and Selection (GOMS) are the chosen methods. There are comparisons between HTA and CWA, and a general comparison between different techniques of GOMS. At the end, there are conclusions in order to underpin the previous analyses and comparisons.
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Kilisch, Markus. "Quantitative analysis of protein-protein interactions governing TASK-1/TASK-3 intracellular transport." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2016. http://hdl.handle.net/11858/00-1735-0000-0028-87D8-0.
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Waggoner, Charlotte M. "Dual task performance and antihistimane use." Thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-03032009-040655/.
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Adams, Anne Edith. "Understanding the skill of functional task analysis." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/37313.
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Although widely used, little is known about the nature of expertise involved in functional task analysis, methods used to discover and represent a task structure in terms of goals and subgoals. Training studies indicated that learning task analysis is not trivial. To counter the "task analysis is an art" explanation, this dissertation approached task analysis as a skill acquisition problem that can be understood through scientific inquiry. Two studies were designed to capture and characterize experienced and novice performance. Professional (Study 1) and novice (Study 2) task analysts conducted task analyses on six tasks from two domains (cooking, communication). Master task analyses were created for each task and served as a basis for analysis. Some similar patterns to the task analysis products and errors were observed for the hierarchy dimensions (breadth and depth of analysis), subgoal focus, and versatility. However, differences in separating subgoals (verb-noun pairs) were observed and may be further investigated in the future. Future directions could also focus on understanding the association between the general approach (breadth and depth-first) and the characteristics of the task analysis products.
Skill components of functional task analysis were derived from the findings in both studies conducted for this dissertation.
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Miller, Robert Howard. "A component task analysis of stereoscopic displays." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/39685.
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Miller, Janet E. "Critiquing as a cognitive task analysis methodology /." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486402544588743.
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Manoharan, Sathiamoorthy. "Task assignment in parallel processor systems." Thesis, University of Edinburgh, 1993. http://hdl.handle.net/1842/6568.
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A generic object-oriented simulation platform is developed in order to conduct experiments on the performance of assignment schemes. The simulation platform, called Genesis, is generic in the sense that it can model the key parameters that describe a parallel system: the architecture, the program, the assignment scheme and the message routing strategy. Genesis uses as its basis a sound architectural representation scheme developed in the thesis. The thesis reports results from a number of experiments assessing the performance of assignment schemes using Genesis. The comparison results indicate that the new assignment scheme proposed in this thesis is a promising alternative to the work-greedy assignment schemes. The proposed scheme has a time-complexity less than those of the work-greedy schemes and achieves an average performance better than, or comparable to, those of the work-greedy schemes. To generate an assignment, some parameters describing the program model will be required. In many cases, accurate estimation of these parameters is hard. It is thought that inaccuracies in the estimation would lead to poor assignments. The thesis investigates this speculation and presents experimental evidence that shows such inaccuracies do not greatly affect the quality of the assignments.
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McDonald, Allison N. "Using task clarification and corrective augmented feedback for behaviour change in an industrial manual task /." [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16857.pdf.
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Mayo, Kevin A. "Definition and evaluation of a synthesis-oriented, user-centered task analysis technique: the Task Mapping Model." Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/40167.
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A software system is an aggregate of communicating modules, and there are several different types of communication among these modules (direct, indirect, and global). Therefore, understanding the interfaces among these modules can characterize the system and are a major factor in the system's complexity. These interfaces could possibly also show and predict inadequacies in the reliability and maintenance of a system. Interfaces are defined early in the development life cycle at a detailed or high level design stage. Knowing that these interfaces exist and their structure leads us to measure them for an indication of the designed interface complexity. This designed interface complexity can then be utilized for software quality assurance by allowing users to choose from among several designs. With data provided by an Ada software developer, the interface complexity metrics correlated with established metrics, but also found complex interfaces that established metrics missed.Ph. D.
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Jin, Zhiqun, and Shijie Zhu. "END-TO-END TIMING ANALYSIS OF TASK-CHAINS." Thesis, Mälardalens högskola, Inbyggda system, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-36694.
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Many automotive systems are real-time systems, which means that not only correct operationsbut also appropriate timings are their main requirements. Considering the in uence that end-to-end delay might have on the performance of the systems, the calculation of it is of necessity.Abundant techniques have actually been proposed, and some of them have already been applied intopractical systems. In spite of this, some further work still needs to be done. The target of thisthesis is to evaluate and compare two end-to-end timing analysis methods from dierent aspectssuch as data age, consumption time, and then decide which method is a prior choice for end-to-end timing analysis. The experiments can be divided into three blocks, system generation andend-to-end delay calculation by two methods respectively. The experiments focus on two kinds ofperformance parameters, data age and the consumption time that these two methods cost duringtheir execution. By changing the system generating parameters like task number and periods, thechanges of performances of the two methods are analyzed. The performances of the two dierentmethods are also compared when they are applied into the same automotive systems. According tothe results of the experiments, the second method can calculate more accurate data age and consumeless time than the rst method does.
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Zhiqun, Jin, and Zhu Shijie. "End-to-end Timing Analysis of Task-Chains." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-36751.
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Many automotive systems are real-time systems, which means that not only correct operationsbut also appropriate timings are their main requirements. Considering the in uence that end-to-end delay might have on the performance of the systems, the calculation of it is of necessity.Abundant techniques have actually been proposed, and some of them have already been applied intopractical systems. In spite of this, some further work still needs to be done. The target of thisthesis is to evaluate and compare two end-to-end timing analysis methods from dierent aspectssuch as data age, consumption time, and then decide which method is a prior choice for end-to-end timing analysis. The experiments can be divided into three blocks, system generation andend-to-end delay calculation by two methods respectively. The experiments focus on two kinds ofperformance parameters, data age and the consumption time that these two methods cost duringtheir execution. By changing the system generating parameters like task number and periods, thechanges of performances of the two methods are analyzed. The performances of the two dierentmethods are also compared when they are applied into the same automotive systems. According tothe results of the experiments, the second method can calculate more accurate data age and consumeless time than the rst method does.
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Brehmer, Matthew Michael. "Why visualization? : task abstraction for analysis and design." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57543.
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Why do people visualize data? People visualize data either to consume or produce information relevant to a domain-specific problem or interest. Visualization design and evaluation involves a mapping between domain problems or interests and appropriate visual encoding and interaction design choices. This mapping translates a domain-specific situation into abstract visualization tasks, which allows for succinct descriptions of tasks and task sequences in terms of why data is visualized, what dependencies a task might have in terms of input and output, and how the task is supported in terms of visual encoding and interaction design choices. Describing tasks in this way facilitates the comparison and cross-pollination of visualization design choices across application domains; the mapping also applies in reverse, whenever visualization researchers aim to contextualize novel visualization techniques. In this dissertation, we present multiple instances of visualization task abstraction, each integrating our proposed typology of abstract visualization tasks. We apply this typology as an analysis tool in an interview study of individuals who visualize dimensionally reduced data in different application domains, in a post-deployment field study evaluation of a visual analysis tool in the domain of investigative journalism, and in a visualization design study in the domain of energy management. In the interview study, we draw upon and demonstrate the descriptive power of our typology to classify five task sequences relating to visualizing dimensionally reduced data. This classification is intended to inform the design of new tools and techniques for visualizing this form of data. In the field study, we draw upon and demonstrate the descriptive and evaluative power of our typology to evaluate Overview, a visualization tool for investigating large text document collections. After analyzing its adoption by investigative journalists, we characterize two abstract tasks relating to document mining and present seven lessons relating to the design of visualization tools for document data. In the design study, we demonstrate the descriptive, evaluative, and generative power of our typology and identify matches and mismatches between visualization design choices and three abstract tasks relating to time series data. Finally, we reflect upon the impact of our task typology.Science, Faculty of
Computer Science, Department of
Graduate
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Kossack, Merrick Frank. "Ecological task analysis : a method for display enhancement." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/24381.
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Pavlic, Theodore Paul. "Design and Analysis of Optimal Task-Processing Agents." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1281462093.
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GONZÁLEZ-CONDE, PÉREZ JOSÉ LUIS. "Analysis of task scheduling for multi-coreembedded systems." Thesis, KTH, Maskinkonstruktion (Inst.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209838.
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This thesis performs a research on scheduling algorithms for parallel applications. The main focus is their usage on multi-core embedded systems’ applications. A parallel application can be described by a directed acyclic graph. A directed acyclic graph is a mathematical model that represents the parallel application as a set of nodes or tasks and a set of edges or communication messages between nodes. In this thesis scheduling is limited to the management of multiple cores on a multi-core platform for the execution of application tasks. Tasks are mapped onto the cores and their start times are determined afterwards. A toolchain is implemented to develop and schedule parallel applications on a Epiphany E16 developing board, which is a low-cost board with a 16 core chip called Epiphany. The toolchain is limited to the usage of offline scheduling algorithms which compute a schedule before running the application. The programmer has to draw a directed acyclic graph with the main attributes of the application. The toolchain then generates the code for the target which automatically handles the inter-task communication. Some metrics are established to help evaluate the performance of applications on the target platform, such as the execution time and the energy consumption. Measurements on the Epiphany E16 developing board are performed to estimate the energy consumption of the multi-core chip as a function of the number of idle cores. A set of 12 directed acyclic graphs are used to verify that the toolchain works correctly. They cover different aspects: join nodes, fork nodes, more than one entry node, more than one exit node, different tasks weights and different communication costs. A use case is given, the development of a brake-by-wire demonstration platform. The platform aims to use the Epiphany board. Three experiments are performed to analyze the performance of parallel computing for the use case. Three brake-by-wire applications are implemented, one for a single core system and two for a multi-core system. The parallel application scheduled with a list-based algorithm requires 266% more time and 1346% more energy than the serial application. The parallel application scheduled with a task duplication algorithm requires 46% less time and 134% more energy than the serial application. The toolchain system has proven to be a useful tool for developing parallel applications since it automatically handles the inter-task communication. However, future work can be done to automatize the decomposition of serial applications from the source code. The conclusion is that this communication system is suitable for coarse granularity, where the communication overhead does not affect so much. Task duplication is better to use for fine granularity since inter-core communication is avoided by doing extra computations.Detta examensarbete utför en studie av om schemaläggningsalgoritmer för parallella applikationer. Huvudfokus är deras användning för flerkärniga inbyggda systemapplikationer. En parallell applikation kan beskrivas genom en riktad acyklisk graf. En riktad acyklisk graf är en matematisk modell som representerar den parallella applikationen som en uppsättning av noder, eller uppgifter, och en uppsättning av pilar, eller meddelanden, mellan noder. I denna uppsats är schemaläggning begränsad till hanteringen av flera kärnor på en multikärnig plattform för genomförandet av applikationens uppgifter. Uppgifter mappas på kärnorna och deras starttider bestäms efteråt. En speciell verktygskedja kallad ett ”toolchain system” har tagits fram för att utveckla och schemalägga parallella applikationer på ett Epiphany E16 kort, vilket är ett billigt kort med ett 16-kärnigt chip som kallas Epiphany. Toolchain systemet är begränsat till användningen av offline schemaläggningsalgoritmer som beräknar ett schema innan du kör programmet. Programmeraren måste rita en riktad acyklisk graf med de viktigaste attributen. Toolchain systemet genererar därefter kod som automatiskt hanterar kommunikationen mellan uppgifterna. Ett antal prestandamått defineras för att kunna utvärdera applikationer på målplattformen, såsom genomförandetid och energiförbrukning. Mätningar på Epiphany E16 kortet genomförs för att uppskatta energiförbrukningen som en funktion av antalet lediga kärnor. En uppsättning av 12 riktade acykliska grafer används för att kontrollera att toolchain systemet fungerar korrekt. De täcker olika aspekter: noder som går ihop, noder som går isär, fler än en ingångsnod, fler än en utgångsnod, olika vikter på uppgifterna och olika kommunikationskostnader. Ett användningsfall ges, utveckling av en brake-by-wire demonstrations plattform. Plattformen syftar till att använda Epiphany kortet. Tre experiment utförs för att analysera resultatet av parallella beräkningar för användningsfallet. Tre brake-by-wire applikationer genomförs, en för ett enda kärnsystem och två för ett multikärnigt system. Den parallella applikationen som var schemalagd med en algoritm baserad på listor kräver 266% mer tid och 1346% mer energi än den seriella applikationen. Den parallella applikationen som var schemalagd med en uppgiftsduplicerings-algoritm kräver 46% mindre tid och 134% mer energi än den seriella applikationen. Toolchain systemet har visat sig att vara ett användbart verktyg för att utveckla parallella applikationer eftersom det automatiskt hanterar kommunikation mellan uppgifter. Däremot kan framtida arbete göras för att automatisera nedbrytningen av seriella program från källkod. Slutsatsen är att detta kommunikationssystem är lämpligt för grovkorning parallellism, där kommunikationskostnaden inte påverkar lika mycket. Uppgiftsdupliceringen är bättre att använda för finkorning parallellism eftersom kommunikation mellan kärnor undviks genom att göra extra beräkningar.
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Nakade, Radha Vi. "Verification of Task Parallel Programs Using Predictive Analysis." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6176.
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Task parallel programming languages provide a way for creating asynchronous tasks that can run concurrently. The advantage of using task parallelism is that the programmer can write code that is independent of the underlying hardware. The runtime determines the number of processor cores that are available and the most efficient way to execute the tasks. When two or more concurrently executing tasks access a shared memory location and if at least one of the accesses is for writing, data race is observed in the program. Data races can introduce non-determinism in the program output making it important to have data race detection tools. To detect data races in task parallel programs, a new Sound and Complete technique based on computation graphs is presented in this work. The data race detection algorithm runs in O(N2) time where N is number of nodes in the graph. A computation graph is a directed acyclic graph that represents the execution of the program. For detecting data races, the computation graph stores shared heap locations accessed by the tasks. An algorithm for creating computation graphs augmented with memory locations accessed by the tasks is also described here. This algorithm runs in O(N) time where N is the number of operations performed in the tasks. This work also presents an implementation of this technique for the Java implementation of the Habanero programming model. The results of this data race detector are compared to Java Pathfinder's precise race detector extension and permission regions based race detector extension. The results show a significant reduction in the time required for data race detection using this technique.
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Puerini, Sara. "Typing your mind away. Comparing keylogged tasks with the Task Segment Framework." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22899/.
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One of the main process features under study in Cognitive Translation & Interpreting Studies (CTIS) is the chronological unfolding of the tasks. The analyses of time spans in translation have been conceived in two ways: (1) studying those falling between text units of different sizes: words, phrases, sentences, and paragraphs; (2) setting arbitrary time span thresholds to explore where do they fall in the text, whether between text units or not. Writing disfluencies may lead to comprehensive insights into the cognitive activities involved in typing while translating. Indeed, long time spans are often taken as hints that cognitive resources have been subtracted from typing and devoted to other activities, such as planning, evaluating, etc.
This exploratory, pilot study combined both approaches to seek potential general tendencies and contrasts in informants’ inferred mental processes when performing different writing tasks, through the analysis of their behaviors, as keylogged. The study tasks were retyping, monolingual free writing, translation, revision and a multimodal task—namely, monolingual text production based on an infographic leaflet. Task logs were chunked, and shorter time spans, including those within words, were analyzed following the Task Segment Framework (Muñoz & Apfelthaler, in press). Finally, time span analysis was combined with the analysis of the texts as to their lexical density, type-token ratio and word frequency.
Several previous results were confirmed, and some others were surprising. Time spans in free writing were longer between paragraphs and sentences, possibly hinting at planning and, in translation, between clauses and words, suggesting more cognitive activities at these levels. On the other hand, the infographic was expected to facilitate the writing process, but most time spans were longer than in both free writing and translation. Results of the multimodal task and some other results suggest venues for further research.
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Tau, Sethunya Harriet Hlobisa. "An analysis of regulatory mechanisms during sustained task execution in cognitive, motor and sensory tasks." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1006806.
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Fatigue is a state that, although researched for many years, is still not completely understood. Alongside this lack of a general understanding of fatigue is a lack of knowledge on the processes involved in the regulation of fatigue. The existing theories relating to regulation are focussed on mental effort regulation, suggesting that performance outcomes are co-ordinated by effort regulation that functions by making alterations to physiological processes and strategic adjustments at a cognitive level in response to cognitive demands and goals. Since fatigue is a multi-dimensional construct with psychological, physiological, and behavioural effects that respond to endogenous and exogenous variables, it follows then that fatigue assessment techniques ought to include multi-dimensional measures to acquire a holistic depiction of the fatigue symptom. This study aimed to assess whether or not a mechanism that regulated fatigue during sustained task execution could be identified and whether this mechanism resulted in regulation patterns that were distinct to a specific task. An additional aim of the study was on assessing whether the manner in which performance, psychophysical and subjective variables were modified over time followed a similar regulation pattern. The research design was aimed at inducing task-related fatigue twice on two different occasions in the same participants and evaluating the resultant changes in fatigue manifestation. This was done to assess the ability of participants to cope with fatigue as a result of previous experience. The research protocol included three tasks executed for an hour aimed at targeting and taxing the sensory, cognitive, motor resources, each task performed twice. 60 participants were recruited to participate in the current study, with 20 participants – 10 males and 10 females – randomly assigned to each of the three tasks. The cognitive resource task consisted of a memory recall task relying on working memory intended to evaluate the extent of reductions in memory and attention. The sensory resource task consisted of a reading task measuring visual scanning and perception designed to evaluate the extent of reduced vigilance. The motor resource task consisted of a modified Fitts’ stimulus response task targeted at monitoring the extent of movement timing disruption. Performance measures comprised of: response delay and the number of correctly identified digits during the cognitive resource task, the amount of correctly identified errors and reading speed during the sensory resource task, response time during the motor resource task, and responses to simple auditory reaction time tests (RTT) initiated at intervals during the task and then again at the end of each task. Physiological measures included ear temperature, eye blink frequency and duration, heart rate (HR), and heart rate variability (HRV). Subjective measures included the use of the Ratings of Perceived Exertion Category Ratio 10 scale (RPE CR 10) to measure cognitive exertion and the NASA-Task Load Index (NASA-TLX) to index mental workload. Eye blink frequency and duration, HR and HRV were sensitive to the type of task executed, showing differing response patterns both over the different tasks and over the two test sessions. The subjective measures indicated increasing RPE ratings over time in all tasks while the NASA-TLX indicated that each task elicited different workloads. Differing task performance responses were measured between the 1st test session and the 2nd test session during all tasks; while performance was found to improve during the 2nd test session for the motor and sensory tasks, it declined during the cognitive task. The findings of this research indicate that there was a regulatory mechanism for fatigue that altered the manner in which performance, psychophysical and subjective variables were modified over time, initiating a unique fatigue regulation pattern for each variable and each task. This regulation mechanism is understood to be a proactive and protective mechanism that functions through reducing a person’s ability to be vigilant, attentive, to exercise discernment, and to direct their level of responsiveness, essentially impacting how the body adapts to and copes with fatigue. The noted overall findings have industry implications; industries should consider accounting for the effects of this regulatory mechanism in their fatigue management interventions, specifically when designing job rotation and work/rest schedules because each cognitive task, having elicited a unique fatigue regulation pattern, ought to also have a different management program.Microsoft� Office Word 2007
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Yip, Lai Ping Rhoda. "Comparing the effectiveness of differenet [sic] task types (information gap tasks and decision making tasks) on the promtotion [sic] of second language acquisition." HKBU Institutional Repository, 2004. http://repository.hkbu.edu.hk/etd_ra/557.
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Gay, Paul Eugene Jr. "An analysis of the influence of order of part task component training on whole task performance." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/28629.
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Middleton, Richard T. "Task forces as agents of policy innovation : an analysis of three mayoral race relations task forces /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3036846.
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Cadle, Adrienne W. "The Relationship between Rating Scales used to Evaluate Tasks from Task Inventories for Licensure and Certification Examinations." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4296.
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The first step in developing or updating a licensure or certification examination is to conduct a job or task analysis. Following completion of the job analysis, a survey validation study is performed to validate the results of the job analysis and to obtain task ratings so that an examination blueprint may be created. Psychometricians and job analysts have spent years arguing over the choice of scales that should be used to evaluate job tasks, as well as how those scales should be combined to create an examination blueprint. The purpose of this study was to determine the relationship between individual and composite rating scales, examine how that relationship varied across industries, sample sizes, task presentation order, and number of tasks rated, and evaluate whether examination blueprint weightings would differ based on the choice of scales or composites of scales used. Findings from this study should be used to guide psychometricians and job analysts in their choice of rating scales, choice of composites of rating scales, and how to create examination blueprints based upon individual and/or composite rating scales.
A secondary data analysis was performed to help answer some of these questions. As part of the secondary data analysis, data from 20 survey validation studies performed during a five year period were analyzed. Correlations were computed between 29 pairings of individual and composite rating scales to see if there were redundancies in task ratings. Meta-analytic techniques were used to evaluate the relationship between each pairing of rating scales and to determine if the relationship between pairings of rating scales was impacted by several factors. Lastly, sample examination blueprints were created from several individual and composite rating scales to determine if the rating scales that were used to create the examination blueprints would ultimately impact the weighting of the examination blueprint.
The results of this study suggest that there is a high degree of redundancy between certain pairs of scales (i.e., the Importance and Criticality rating scale are highly related), and a somewhat lower degree of redundancy between other rating scales; but that the same relationship between rating scales is observed across many variables, including the industry for which the job analysis was being performed. The results also suggest the choice of rating scales used to create examination blueprints does not have a large effect on the finalized examination blueprint. This finding is especially true if a composite rating scale is used to create the weighting on the examination blueprint.
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Medina, Almitra Dadin. "Concurrent verbalization, task complexity, and working memory effects on L2 learning in a computerized task /." Connect to Electronic Thesis (ProQuest) Connect to Electronic Thesis (CONTENTdm), 2008. http://worldcat.org/oclc/436228033/viewonline.
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Rogers, Robert. "The costs of switching between cognitive tasks : a performance analysis." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318320.
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Lo, Yuet Mei. "Business process atomicity analysis supporting late task property bindings /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?COMP%202005%20LO.
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Sorbello, Tamma. "Goal orientation, ability and task performance : a moderated analysis /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19220.pdf.
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Israelsson, Sigurd. "Energy Efficiency Analysis of ARM big.LITTLE Global Task Scheduling." Thesis, Högskolan i Skövde, Institutionen för informationsteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-11296.
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In this paper an ARM big.LITTLE system with Global Task Scheduling is evaluated in terms of its energy efficiency and performance measured in execution time. The big.LITTLE system is evaluated against the same system but with only the big or LITTLE processor active. The evaluation is done by performing experiments that target three different levels of load: full load, varying load and low load. The benchmarking software PARSEC Blackscholes and BBench are used to put the system under a synthetic workload in the tests. The results show that overall big.LITTLE achieves an improvement in execution time for all test scenarios, although very slim for varying load, and is more energy efficient than the big processor with the possible exception of a low load scenario. However, the LITTLE processor by itself is found to be the most energy efficient system even though it showed the slowest execution time.
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Sattem, Jan Paul. "A task analysis of the Reformed North American pastor." Theological Research Exchange Network (TREN) Access this title online, 2005. http://www.tren.com.
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González-conde, pérez José Luis. "Analysis of task scheduling for multi-core embedded systems." Thesis, KTH, Maskinkonstruktion (Inst.), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-186330.
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This thesis performs a research on scheduling algorithms for parallel appli-cations. The main focus is their usage on multi-core embedded systems’ appli-cations. A parallel application can be described by a directed acyclic graph. A directed acyclic graph is a mathematical model that represents the parallel application as a set of nodes or tasks and a set of edges or communication messages between nodes.In this thesis scheduling is limited to the management of multiple cores on a multi-core platform for the execution of application tasks. Tasks are mapped onto the cores and their start times are determined afterwards. A toolchain is implemented to develop and schedule parallel applications on a Epiphany E16 developing board, which is a low-cost board with a 16 core chip called Epiphany. The toolchain is limited to the usage of o˜ine scheduling algorithms which compute a schedule before running the application.The programmer has to draw a directed acyclic graph with the main at-tributes of the application. The toolchain then generates the code for the target which automatically handles the inter-task communication. Some metrics are established to help evaluate the performance of applications on the target plat-form, such as the execution time and the energy consumption. Measurements on the Epiphany E16 developing board are performed to estimate the energy consumption of the multi-core chip as a function of the number of idle cores.A set of 12 directed acyclic graphs are used to verify that the toolchain works correctly. They cover di˙erent aspects: join nodes, fork nodes, more than one entry node, more than one exit node, di˙erent tasks weights and di˙erent communication costs.A use case is given, the development of a brake-by-wire demonstration platform. The platform aims to use the Epiphany board. Three experiments are performed to analyze the performance of parallel computing for the use case. Three brake-by-wire applications are implemented, one for a single core system and two for a multi-core system. The parallel application scheduled with a list-based algorithm requires 266% more time and 1346% more energy than the serial application. The parallel application scheduled with a task duplication algorithm requires 46% less time and 134% more energy than the serial application.The toolchain system has proven to be a useful tool for developing paral-lel applications since it automatically handles the inter-task communication. However, future work can be done to automatize the decomposition of serial applications from the source code. The conclusion is that this communication system is suitable for coarse granularity, where the communication overhead does not a˙ect so much. Task duplication is better to use for fine granularity since inter-core communication is avoided by doing extra computations.
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Gonzales-Conde, Perez José Luis. "Analysis of task scheduling for multi-core embedded systems." Thesis, KTH, Maskinkonstruktion (Inst.), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-202548.
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This thesis performs a research on scheduling algorithms for parallel applications.The main focus is their usage on multi-core embedded systems’ applications.A parallel application can be described by a directed acyclic graph.A directed acyclic graph is a mathematical model that represents the parallelapplication as a set of nodes or tasks and a set of edges or communicationmessages between nodes.In this thesis scheduling is limited to the management of multiple coreson a multi-core platform for the execution of application tasks. Tasks aremapped onto the cores and their start times are determined afterwards. Atoolchain is implemented to develop and schedule parallel applications on aEpiphany E16 developing board, which is a low-cost board with a 16 core chipcalled Epiphany. The toolchain is limited to the usage of offline schedulingalgorithms which compute a schedule before running the application.The programmer has to draw a directed acyclic graph with the main attributesof the application. The toolchain then generates the code for the targetwhich automatically handles the inter-task communication. Some metrics areestablished to help evaluate the performance of applications on the target platform,such as the execution time and the energy consumption. Measurementson the Epiphany E16 developing board are performed to estimate the energyconsumption of the multi-core chip as a function of the number of idle cores.A set of 12 directed acyclic graphs are used to verify that the toolchainworks correctly. They cover different aspects: join nodes, fork nodes, morethan one entry node, more than one exit node, different tasks weights anddifferent communication costs.A use case is given, the development of a brake-by-wire demonstrationplatform. The platform aims to use the Epiphany board. Three experimentsare performed to analyze the performance of parallel computing for the usecase. Three brake-by-wire applications are implemented, one for a single coresystem and two for a multi-core system. The parallel application scheduledwith a list-based algorithm requires 266% more time and 1346% more energythan the serial application. The parallel application scheduled with a taskduplication algorithm requires 46% less time and 134% more energy than theserial application.The toolchain system has proven to be a useful tool for developing parallelapplications since it automatically handles the inter-task communication.However, future work can be done to automatize the decomposition of serialapplications from the source code. The conclusion is that this communicationsystem is suitable for coarse granularity, where the communication overheaddoes not affect so much. Task duplication is better to use for fine granularitysince inter-core communication is avoided by doing extra computations.Detta examensarbete utför en studie av om schemaläggningsalgoritmer förparallella applikationer. Huvudfokus är deras användning för flerkärniga inbyggdasystemapplikationer. En parallell applikation kan beskrivas genom enriktad acyklisk graf. En riktad acyklisk graf är en matematisk modell somrepresenterar den parallella applikationen som en uppsättning av noder, elleruppgifter, och en uppsättning av pilar, eller meddelanden, mellan noder.I denna uppsats är schemaläggning begränsad till hanteringen av flerakärnor på en multikärnig plattform för genomförandet av applikationens uppgifter.Uppgifter mappas på kärnorna och deras starttider bestäms efteråt. Enspeciell verktygskedja kallad ett ”toolchain system” har tagits fram för attutveckla och schemalägga parallella applikationer på ett Epiphany E16 kort,vilket är ett billigt kort med ett 16-kärnigt chip som kallas Epiphany. Toolchainsystemet är begränsat till användningen av offline schemaläggningsalgoritmersom beräknar ett schema innan du kör programmet.Programmeraren måste rita en riktad acyklisk graf med de viktigaste attributen.Toolchain systemet genererar därefter kod som automatiskt hanterarkommunikationen mellan uppgifterna. Ett antal prestandamått defineras föratt kunna utvärdera applikationer på målplattformen, såsom genomförandetidoch energiförbrukning. Mätningar på Epiphany E16 kortet genomförs för attuppskatta energiförbrukningen som en funktion av antalet lediga kärnor.En uppsättning av 12 riktade acykliska grafer används för att kontrolleraatt toolchain systemet fungerar korrekt. De täcker olika aspekter: noder somgår ihop, noder som går isär, fler än en ingångsnod, fler än en utgångsnod,olika vikter på uppgifterna och olika kommunikationskostnader.Ett användningsfall ges, utveckling av en brake-by-wire demonstrationsplattform. Plattformen syftar till att använda Epiphany kortet. Tre experimentutförs för att analysera resultatet av parallella beräkningar för användningsfallet.Tre brake-by-wire applikationer genomförs, en för ett enda kärnsystemoch två för ett multikärnigt system. Den parallella applikationen somvar schemalagd med en algoritm baserad på listor kräver 266% mer tid och1346% mer energi än den seriella applikationen. Den parallella applikationensom var schemalagd med en uppgiftsduplicerings-algoritm kräver 46% mindretid och 134% mer energi än den seriella applikationen.Toolchain systemet har visat sig att vara ett användbart verktyg för attutveckla parallella applikationer eftersom det automatiskt hanterar kommunikationmellan uppgifter. Däremot kan framtida arbete göras för att automatiseranedbrytningen av seriella program från källkod. Slutsatsen är att dettakommunikationssystem är lämpligt för grovkorning parallellism, där kommunikationskostnadeninte påverkar lika mycket. Uppgiftsdupliceringen är bättreatt använda för finkorning parallellism eftersom kommunikation mellan kärnorundviks genom att göra extra beräkningar.
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Jones, Diana Lynn. "Analysis of task structures in elementary physical education classes /." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487668215807882.
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Gandikota, Murthy S. "A task analysis of chemical and biotechnological process synthesis /." The Ohio State University, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487758680159963.
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Dyess, Robert M. "Operator task analysis of a shipboard electronic warfare system." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-03302010-020631/.
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Lee, Suet-mui Carol. "English teachers' conceptions of task-based learning." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25161416.
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Swieringa, Kurt A. "An evaluation of interval management (IM) using task analysis and work domain analysis." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47728.
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Work Domain Analysis (WDA) and task analysis are methods that can be used to develop complex systems that support human operators. Task analysis can be used to describe the nominal tasks of many complex safety critical systems which are also highly proceduralized. However, complex systems may require human operators to have a greater understanding of the system's dynamics than can be obtained from procedures derived from a task analysis. This is particularly true when off-nominal events occur, for which there is no procedure. By concentrating on the constraints in the work domain instead of tasks, work domain analysis can complement task analysis by supporting operators during off-nominal events that do not have any predescribed procedures.
The goal of this study was to use WDA and two forms of task analysis to derive interface and procedure modifications for a new aviation concept called interval management. Interval management is a new concept whose goal is to increase runway throughput by enabling aircraft to achieve a precise interval behind a lead aircraft. This study used data from a human-in-the-loop study conducted at NASA Langley Research Center to develop a Hierarchical Task Analysis (HTA), Control Task Analysis (CTA), and WDA. The HTA was used to describe a nominal set or procedures, the CTA was used to describe strategies pilots could use to make decisions regarding the IM operation, and the WDA was used to determine representations and procedures that could convey complete and accurate knowledge of interval management to the flightcrew.
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Neninger, Carlos Rafael. "Robotic Hand Evaluation Based on Task Specific Kinematic Requirements." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3262.
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With the rise autonomous and robotic systems in field applications, the need for dexterous, highly adaptable end effectors has become a major research topic. Control mechanisms of robotics hands with a high number independent actuators is recognized as a complex, high dimensional problem, with exponentially complex algorithms. However, recent studies have shown that human hand motion possesses very high joint correlation which translates into a set of predefined postures, or synergies. The hand produces a motion using a complementing contribution of multiple joints, called synergies. The similarities place variables onto a common dimensional space, effectively reducing the number of independent variables.
In this thesis, we analyze the motion of the hand during a set of objects grasps using mul- tivariate Principal Component Analysis (mPCA) to extract both the principal variables and their correlation during grasping. We introduce the use of Functional PCA (fPCA) primarily on princi- pal components to study the dynamic requirements of the motion. The goal is to defined a set of synergies common and specific to all motions. We expand the analysis by classifying the objects grasps, or tasks, using their functional components, or harmonics over the entire motion. A set of groups are described based on these classification that confirms empirical findings. Lastly, we evaluate the motions generated from the analysis by applying them onto robotic hands. The results from the mPCA and fPCA procedures are used to map the principal components from each motion onto underactuated robotic designs. We produce a viable routine that indicates how the mapping is performed, and finally, we implement the motion generated onto a real hand. The resultant robotic motion was evaluated on how it mimics the human motion.
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Peters, Joseph G. "A job task analysis survey for patrol officers in XYZ Security Company." Online version, 2009. http://www.uwstout.edu/lib/thesis/2009/2009petersj.pdf.
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Breighner, Emily Sara. "A Phase 2 Task Analysis Study of the Process-Experiential Narrative Trauma Retelling Task in a Clinical Sample." Connect to full text in OhioLINK ETD Center, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1228229964.
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Yoonton, Sarakorn. "The ergonomic analysis of valve adjustment tasks for refinery unit operators at Kock Petroleum Group, St. Paul. Minnesota." Online version, 1999. http://www.uwstout.edu/lib/thesis/1999/1999yoonton.pdf.
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Xiang, Chun Ping. "A study on task-based language teaching and learning : tasks and language focus." Thesis, University of Macau, 2010. http://umaclib3.umac.mo/record=b2180749.
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Stevens, Tobias. "Cortical regions involved in proactive control of task-set." Thesis, University of Exeter, 2011. http://hdl.handle.net/10036/3285.
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This thesis is about what happens in the brain when people switch between tasks. Each task requires a particular assembly of cognitive processes, an orientation of attention and set of rules relating action to input — a "task-set". The research reported used a task-cueing paradigm to study preparatory control of task-set. On each trial a stimulus (a coloured shape) was preceded by a verbal task-cue specifying which task to do (judge the shape or the colour of the stimulus). Reaction time and error rate increase on trials when the task changes relative to trials on which it does not. When the cue stimulus interval (CSI) is increased, this "switch cost" is reduced, indexing a process of task-set reconfiguration in which top-down control is employed to reconfigure the task-set parameters. Effective reconfiguration may also be indicated by a reduction in the "response congruence effect" — poorer performance on stimuli mapped to different responses for the two tasks than for stimuli mapped to the same response. I present six experiments using transcranial magnetic stimulation (TMS), a technique for interfering briefly and harmlessly with neuronal activity in a small region of cortex, to address the question of which brain regions contribute to anticipatory control of task-set as indexed by these behavioural measures. To help guide the selection of candidate brain regions, I first present a review and meta-analysis of neuroimaging studies of task-switching in the literature. Many fMRI studies, comparing brain activation on task-switch and -repeat trials have been published. Some have also tried to isolate activations related specifically to pro-active control of task-set. The activations reported are quite inconsistent over studies. I used a quantitative meta-analysis technique to identify which brain regions are most consistently found by studies reporting switch minus repeat contrasts and which may be specifically important for preparation on switch trials. The experiments examined the effect of stimulating several regions during the long cue-stimulus interval of a task-cueing paradigm, relative to control conditions. A first pair of experiments suggests an important role in proactive task-set control for two regions in dorsal medial frontal cortex, the supplementary motor area (SMA) and an area known as pre-SMA, though the former region appeared to contribute to reducing the switch cost while the latter appeared to reduce the effects of response congruence. In a further three experiments, I examined the role of the right intra-parietal sulcus (rIPS); this appears to play a crucial role in preparation for a task-switch but not post-stimulus task-set reconfiguration. In a final experiment, I used TMS guided by fMRI activations in the same participants to study the effects of stimulation over the left inferior frontal junction (IFJ). The results indicate that a region just anterior to the left IFJ is specifically important for preparing for a switch trial. I discuss the roles that may be played by these three regions in task-set control.
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Schlenker-Korb, Rebecca Gail. "EFFECTS OF CHOICE AND NO CHOICE OF PREFERRED ENGAGMENT STIMULI TASKS ON THE OFF-TASK BEHAVIOR OF." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1465.
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Problem behavior, such as off &ndash - &ndash task behavior, is one of the most commonly cited challenges competing with school readiness skills for young children with disabilities. This study demonstrated how a functional behavior assessment can be conducted in a school setting to determine the functional relation between off &ndash - &ndash task behavior and academic engagement stimuli for three kindergarten students at &ndash - &ndash risk of academic failure. Indirect and descriptive behavior assessments were first conducted to determine the hypothesized function of off &ndash - &ndash task behavior. Two experimental functional analysis conditions were then constructed to confirm the hypothesized function. Results demonstrated that when preferred academic engagement stimuli were used during instruction, escape &ndash - &ndash maintained off &ndash - &ndash task behavior decreased substantially. Therefore, the use of preferred stimuli as an instructional support may have abolished the value of escape as reinforcement for off &ndash - &ndash task behavior. Implications for practice and future research are discussed.
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Thornton, Michael Douglas. "TDL - a software tool to support designers in task analysis." Thesis, University of Hull, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243468.
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Khemira, Mohamed Mustapha. "Information-based analysis of a one-dimensional mechanical positioning task." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36663.
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Austin, Theodore Matthew. "A Task Analysis of Metacommunication in Time-Limited Dynamic Psychotherapy." Antioch University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=antioch1305028242.
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Astley, J. A. "An evaluation of task analysis techniques for industrial process control." Thesis, Aston University, 1991. http://publications.aston.ac.uk/10831/.
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The concept of a task is fundamental to the discipline of ergonomics. Approaches to the analysis of tasks began in the early 1900's. These approaches have evolved and developed to the present day, when there is a vast array of methods available. Some of these methods are specific to particular contexts or applications, others more general. However, whilst many of these analyses allow tasks to be examined in detail, they do not act as tools to aid the design process or the designer. The present thesis examines the use of task analysis in a process control context, and in particular the use of task analysis to specify operator information and display requirements in such systems. The first part of the thesis examines the theoretical aspect of task analysis and presents a review of the methods, issues and concepts relating to task analysis. A review of over 80 methods of task analysis was carried out to form a basis for the development of a task analysis method to specify operator information requirements in industrial process control contexts. Of the methods reviewed Hierarchical Task Analysis was selected to provide such a basis and developed to meet the criteria outlined for such a method of task analysis. The second section outlines the practical application and evolution of the developed task analysis method. Four case studies were used to examine the method in an empirical context. The case studies represent a range of plant contexts and types, both complex and more simple, batch and continuous and high risk and low risk processes. The theoretical and empirical issues are drawn together and a method developed to provide a task analysis technique to specify operator information requirements and to provide the first stages of a tool to aid the design of VDU displays for process control.
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Mason, Claire Marjorie. "Group task satisfaction : the construct of job satisfaction applied to groups /." [St. Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16188.pdf.
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Mottola, Danica J. "Solutions for total force structure division's conduct of troop-to-task analysis." Thesis, Monterey, California : Naval Postgraduate School, 2010. http://edocs.nps.edu/npspubs/scholarly/theses/2010/Mar/10Mar%5FMottola.pdf.
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Thesis (M.S. in Manpower Systems Analysis)--Naval Postgraduate School, March 2010.Thesis Advisor(s): Simon, C. A. ; Hatch, W. D. Second Reader:Dooley, S. G. "March 2010." Description based on title screen as viewed on April 23, 2010. Author(s) subject terms: Troop-to-task analysis, Deputy Commandant Combat Development and Integration (DC, CD&I), Total Force Structure Division (TFSD), Total Force Structure Process (TFSP), Expeditionary Force Development System (EFDS), Marine Requirements Oversight Council (MROC), Universal Needs Statement (UNS), Uncompensated Review Board (URB), Capabilities Based Analysis (CBA) Includes bibliographical references (p. 99-101). Also available in print.
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Fournier, Helene. "The nature of task representation by novice multimedia authors /." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85160.
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The continuing importance of literacy and the emergence of electronic text forms have incited interest in the use of technology in a number of domains, among them writing and multimedia authoring. The expectation is that technology will facilitate the writing process by supporting cognitive processes and align school instruction with real-world tasks by providing more meaningful learning environments. This study tracked middle school students' task representation as they participated in protracted multimedia design and writing tasks. Students were engaged in the creation of a literary magazine over several weeks, with both written and media products linked to a particular theme. Cognitive strategies and behaviours associated with problem solving and communication are described through joint design activities. Students' working activities and their competencies in English Language Arts and Computer Science were identified, and cognitive processes tracked in negotiating and defining the boundaries of the task. Teachers' task representations were also examined in terms of their ability to address student variability; strengths and weaknesses between members of a group as well as their inherent dynamics are brought to the fore. Results point to the need for a better understanding of complex cognitive activities in developing new and more sophisticated repertoires of practice to realize the vision of children 'constructing' their own knowledge. Consequently, educators will gain new insights into what students can achieve when given the opportunities and the tools to do so. The role of educators is seen as instrumental in providing structure and mechanisms for supporting students' engagement in complex tasks. Findings underscore the importance of adopting a broader framework for thinking about the impact of students' participation in literacy projects. Limitations of the study are addressed as well as the key variables in the research on written