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Human Performance (human + performance)
Terms modified by Human Performance Selected AbstractsThe bounds of cognitive heuristic performance on the geographic profiling taskAPPLIED COGNITIVE PSYCHOLOGY, Issue 3 2009Paul J. Taylor Human performance on the geographic profiling task,where the goal is to predict an offender's home location from their crime locations,has been shown to equal that of complex actuarial methods when it is based on appropriate heuristics. However, this evidence is derived from comparisons of ,X-marks-the-spot' predictions, which ignore the fact that some algorithms provide a prioritization of the offender's area of spatial activity. Using search area as a measure of performance, we examine the predictions of students (N,=,200) and an actuarial method under three levels of information load and two levels of heuristic-environment fit. Results show that the actuarial method produces a smaller search area than a concentric search outward from students' ,X-marks-the-spot' predictions, but that students are able to produce search areas that are smaller than those provided by the actuarial method. Students' performance did not decrease under greater information load and was not improved by adding a descriptive qualifier to the taught heuristic. Copyright © 2008 John Wiley & Sons, Ltd. [source] Strategy Generalization Across Orientation Tasks: Testing a Computational Cognitive ModelCOGNITIVE SCIENCE - A MULTIDISCIPLINARY JOURNAL, Issue 5 2008Glenn Gunzelmann Abstract Humans use their spatial information processing abilities flexibly to facilitate problem solving and decision making in a variety of tasks. This article explores the question of whether a general strategy can be adapted for performing two different spatial orientation tasks by testing the predictions of a computational cognitive model. Human performance was measured on an orientation task requiring participants to identify the location of a target either on a map (find-on-map) or within an egocentric view of a space (find-in-scene). A general strategy instantiated in a computational cognitive model of the find-on-map task, based on the results from Gunzelmann and Anderson (2006), was adapted to perform both tasks and used to generate performance predictions for a new study. The qualitative fit of the model to the human data supports the view that participants were able to tailor a general strategy to the requirements of particular spatial tasks. The quantitative differences between the predictions of the model and the performance of human participants in the new experiment expose individual differences in sample populations. The model provides a means of accounting for those differences and a framework for understanding how human spatial abilities are applied to naturalistic spatial tasks that involve reasoning with maps. [source] Analogy retrieval and processing with distributed vector representationsEXPERT SYSTEMS, Issue 1 2000Tony A. Plate Holographic reduced representations (HRRs) are a method for encoding nested relational structures in fixed-width vector representations. HRRs encode relational structures as vector representations in such a way that the superficial similarity of the vectors reflects both superficial and structural similarity of the relational structures. HRRs also support a number of operations that could be very useful in psychological models of human analogy processing: fast estimation of superficial and structural similarity via a vector dot-product; finding corresponding objects in two structures; and chunking of vector representations. Although similarity assessment and discovery of corresponding objects both theoretically take exponential time to perform fully and accurately, with HRRs one can obtain approximate solutions in constant time. The accuracy of these operations with HRRs mirrors patterns of human performance on analog retrieval and processing tasks. [source] The concept of work compatibility: An integrated design criterion for improving workplace human performance in manufacturing systemsHUMAN FACTORS AND ERGONOMICS IN MANUFACTURING & SERVICE INDUSTRIES, Issue 4 2004S. Abdallah In this paper, we present the concept of work compatibility as an integrated work design criterion that simultaneously improves human health and safety, productivity, and work quality in manufacturing systems. In this respect, we have modeled work compatibility as a work design parameter that mathematically integrates the energizing (i.e., system resources) and the demand (i.e., system requirements) forces in the work system. A mathematical equation has been derived for the work compatibility matrix. Furthermore, an operating zone has been developed in which there is a region of optimality for the employee to function on practical grounds with a good degree of efficiency and sustainability. An application example is provided to demonstrate the potential of work compatibility to improve productivity and quality along with improvement in worker safety and health. © 2004 Wiley Periodicals, Inc. Hum Factors Man 14: 379,402, 2004. [source] Effective in-service education requires more than subject expertiseJOURNAL OF HEALTHCARE RISK MANAGEMENT, Issue 3 2010CPHRM, Krishna Lynch RN Several formal roles within the field of human performance and training are specifically responsible for ensuring that programs are designed and developed for maximum impact. Data show that education and training are essential functions of healthcare risk management professionals. For this, healthcare risk management professionals can maximize their training efforts by partnering with an instructional designer or developer to create a training program that promotes safe and trusted healthcare. [source] Perceptual error and the culture of open disclosure in Australian radiologyJOURNAL OF MEDICAL IMAGING AND RADIATION ONCOLOGY, Issue 3 2006AG Pitman Summary The work of diagnostic radiology consists of the complete detection of all abnormalities in an imaging examination and their accurate diagnosis. Errors in diagnostic radiology comprise perceptual errors, which are a failure of detection, and interpretation errors, which are errors of diagnosis. Perceptual errors are subject to rules of human perception and can be expected in a proportion of observations by any human observer including a trained professional under ideal conditions. Current legal standards of medical negligence make no allowance for perceptual errors, comparing human performance to an ideal standard. Diagnostic radiology in Australia has a culture of open disclosure, where full unbiased evidence from an examination is provided to the patient together with the report. This practice benefits the public by allowing genuine differences of opinion and also by allowing a second chance of correct diagnosis in cases of perceptual error. The culture of open disclosure, which is unique to diagnostic radiology, places radiologists at distinct medicolegal disadvantage compared with other specialties. (i) Perceptual error should be acknowledged as an integral inevitable part of diagnostic radiology; (ii) culture of open disclosure should be encouraged by the profession; and (iii) a pragmatic definition of medical negligence should reflect the imperfect performance of human observers. [source] A Human,Automation Interface Model to Guide Automation Design of System FunctionsNAVAL ENGINEERS JOURNAL, Issue 1 2007JOSHUA S. KENNEDY A major component of the US Army's Future Combat Systems (FCS) will be a fleet of eight different manned ground vehicles (MGV). There are promises that "advanced automation" will accomplish many of the tasks formerly performed by soldiers in legacy vehicle systems. However, the current approach to automation design does not relieve the soldier operator of tasks; rather, it changes the role of the soldiers and the work they must do, often in ways unintended and unanticipated. This paper proposes a coherent, top-down, overarching approach to the design of a human,automation interaction model. First, a qualitative model is proposed to drive the functional architecture and human,automation interface scheme for the MGV fleet. Second, the proposed model is applied to a portion of the functional flow of the common crew station on the MGV fleet. Finally, the proposed model is demonstrated quantitatively via a computational task-network modeling program (Improved Performance Research and Integration Tool). The modeling approach offers insights into the impacts on human task-loading, workload, and human performance. Implications for human systems integration domains are discussed, including Manpower and Personnel, Human Factors Engineering, Training, System Safety, and Soldier Survivability. The proposed model gives engineers and scientists a top-down approach to explicitly define and design the interactions between proposed automation schemes and the human crew. Although this paper focuses on the Army's FCS MGV fleet, the model and analytical processes proposed, or similar approaches, are appropriate for many manned systems in multiple domains (aviation, space, maritime, ground transportation, manufacturing, etc.). [source] Knowledge Warfare in the 21ST Century: An Extension in PerformanceNAVAL ENGINEERS JOURNAL, Issue 2 2003Dr. Yvonne R. Masakowski ABSTRACT As we move into the 21st century, we are faced with a critical need to address the ways in which knowledge is generated and used to optimize system and human performance. Today, we are inundated with a plethora of information, emails, and ever-changing software. There is a dynamic relationship among humans, computers, expert systems and intelligent agent software that shapes the way we live, conduct business and participate in war. It is imperative that we master the critical components of knowledge management that will enhance their decision-making capacities and empower the warfighter. In the 21st century, knowledge management tools, intelligent agent architectures, robotics, and automated systems will facilitate expert performance necessary to fortify net-centric warfare. One of the principal metrics of performance will be our ability to reduce uncertainty and provide the most accurate information to the decision-maker at the right time. The importance of these goals becomes clear when considered within the context of images of the World Trade Center (WTC) crumbling to the ground. Now, we understand the cost of poor information in terms of life and freedom. This paper will provide an introduction to the importance of knowledge management and implications for future ship design. [source] A model for helping people hit their performance targetsPERFORMANCE IMPROVEMENT, Issue 8 2010Fred Nickols CPT This article presents the target model of human behavior and performance. The model is a closed-loop, feedback-governed view of human behavior and performance, which is to say it acknowledges that the performer controls his or her performance. The model provides a useful diagnostic framework for examining problems of human performance in the workplace. An example of its application is included. [source] Performance improvement: Applying a human performance model to organizational processes in a military training environmentPERFORMANCE IMPROVEMENT, Issue 5 2009Wayne Aaberg This article provides a description and the results of a study that utilized the human performance (HP) model and methods to explore and analyze a training organization. The systemic and systematic practices of the HP model are applicable to military training organizations as well as civilian organizations. Implications of the study for future organizations grappling with registrar office concerns include the development of a rich information base and the acquisition of data collection resources. [source] Going beyond competencies: An exploratory study in defining exemplary workplace learning and performance practitionersPERFORMANCE IMPROVEMENT QUARTERLY, Issue 1 2009Terri Freeman Smith This study was an exploratory investigation used to identify exemplary performance in four of the areas of expertise (AOEs) as described in the American Society for Training and Development's Mapping the Future: New Workplace Learning and Performance Competencies (2004). Qualitative data were collected from the following four AOEs: (1) delivering training, (2) designing learning, (3) improving human performance, and (4) measuring and evaluating. Research suggests that an exemplary performer could have productivity differences 12 times greater than performers at the bottom of the performance scale and 85% greater than an average performer (Hunter, Schmidt, & Judiesch, 1990). Critical incidents were collected from behavioral event interviews of 23 exemplary performers and 9 typical performers. An analysis of the findings suggests that an exemplary performer may hold at least four key behaviors: taking calculated risks, entrepreneurial and visionary planning, documented business performance to support and influence change, and political prudence and leadership savvy. [source] Brief exposure to a 50 Hz, 100 ,T magnetic field: Effects on reaction time, accuracy, and recognition memoryBIOELECTROMAGNETICS, Issue 3 2002John Podd Abstract The present study investigated both the direct and delayed effects of a 50 Hz, 100 ,T magnetic field on human performance. Eighty subjects completed a visual duration discrimination task, half being exposed to the field and the other half sham exposed. The delayed effects of this field were also examined in a recognition memory task that followed immediately upon completion of the discrimination task, Unlike our earlier studies, we were unable to find any effects of the field on reaction time and accuracy in the visual discrimination task. However, the field had a delayed effect on memory, producing a decrement in recognition accuracy. We conclude that after many years of experimentation, finding a set of magnetic field parameters and human performance measures that reliably yield magnetic field effects is proving elusive. Yet the large number of significant findings suggests that further research is warranted. Bioelectromagnetics 23:189,195, 2002. © 2002 Wiley-Liss, Inc. [source] Strudel: A Corpus-Based Semantic Model Based on Properties and TypesCOGNITIVE SCIENCE - A MULTIDISCIPLINARY JOURNAL, Issue 2 2010Marco Baroni Abstract Computational models of meaning trained on naturally occurring text successfully model human performance on tasks involving simple similarity measures, but they characterize meaning in terms of undifferentiated bags of words or topical dimensions. This has led some to question their psychological plausibility (Murphy, 2002;Schunn, 1999). We present here a fully automatic method for extracting a structured and comprehensive set of concept descriptions directly from an English part-of-speech-tagged corpus. Concepts are characterized by weighted properties, enriched with concept,property types that approximate classical relations such as hypernymy and function. Our model outperforms comparable algorithms in cognitive tasks pertaining not only to concept-internal structures (discovering properties of concepts, grouping properties by property type) but also to inter-concept relations (clustering into superordinates), suggesting the empirical validity of the property-based approach. [source] GARDENS AND DWELLING: PEOPLE IN VERNACULAR GARDENS,GEOGRAPHICAL REVIEW, Issue 3 2004CLARISSA T. KIMBER ABSTRACT. Investigations of dooryard gardens, kitchen gardens, home gardens, and houselot gardens fall unequally into one of three groupings. The first are those that treat the plants in the gardens as biological entities and define a space considered a culturally controlled biological community or habitat. The second are those that consider plants cultural traits and the space defined by their positions a setting for household activities. The third conceives of plants as design elements within a garden or a landscape that frames a house or provides a setting for formal human performances. Recent decades have witnessed a broadening focus in the study of gardens, from spatial characteristics and biological content to social and cultural concerns such as reciprocity networks, contested spaces, and the concept of "dwelling." [source] On Speaking Thus: the Semantics of Indirect DiscourseTHE PHILOSOPHICAL QUARTERLY, Issue 205 2001Jane Heal Indexical predication is possible as well as the more familiar indexical reference. ,My curtains are coloured thus' describes my curtains. The indexical predicate expression it contains (,coloured thus') stands to possible non-indexical replacements (,red') as a referring indexical (,he') does to possible non-indexical replacements (,Tom'), in that it calls upon the context of utterance to fix its semantic contribution to the whole. Indexical predication is the natural resource to call upon in talk about skilful human performances, where we exhibit considerable know-how but little explicit know-that. Speech is among such performances. Both direct and indirect speech reports may be illuminated by seeing them in the light of this thought. A corollary of the approach is that the prospects of providing a formal semantic treatment of indirect speech do not look good. [source] | ||||||||||||||||||||||