Effects of magnification methods and magnifier shapes on visual inspection

Lee, Fion C.H.; Chan, Alan H. S.

doi:10.1016/j.apergo.2008.11.005

Cited by 15 publications

(9 citation statements)

References 17 publications

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“…The assessment of the status of wild stingless bee populations made by the interviewed beekeepers (92% believe there are now less wild bees than 50 years ago), supports recent reports on global bee declines [ 18 , 59 , 60 ]. We must point out that this was no quantitative assessment, as it was based entirely on the beekeeper´s opinion.…”

Section: Discussionsupporting

confidence: 73%

“…Stingless bees are an important asset to fulfill the growing agricultural demand for pollination, because they could compensate for the worldwide declines in honeybee populations [ 18 – 20 ] by assuring enough pollinators [ 21 ] and by pollinating crops more effectively [ 22 ]. In addition, remarkable features make stingless bees appealing both to potential entrepreneurs and development officers.…”

Section: Introductionmentioning

confidence: 99%

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Bees for Development: Brazilian Survey Reveals How to Optimize Stingless Beekeeping

et al. 2015

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Stingless bees are an important asset to assure plant biodiversity in many natural ecosystems, and fulfill the growing agricultural demand for pollination. However, across developing countries stingless beekeeping remains an essentially informal activity, technical knowledge is scarce, and management practices lack standardization. Here we profited from the large diversity of stingless beekeepers found in Brazil to assess the impact of particular management practices on productivity and economic revenues from the commercialization of stingless bee products. Our study represents the first large-scale effort aiming at optimizing stingless beekeeping for honey/colony production based on quantitative data. Survey data from 251 beekeepers scattered across 20 Brazilian States revealed the influence of specific management practices and other confounding factors over productivity and income indicators. Specifically, our results highlight the importance of teaching beekeepers how to inspect and feed their colonies, how to multiply them and keep track of genetic lineages, how to harvest and preserve the honey, how to use vinegar traps to control infestation by parasitic flies, and how to add value by labeling honey containers. Furthermore, beekeeping experience and the network of known beekeepers were found to be key factors influencing productivity and income. Our work provides clear guidelines to optimize stingless beekeeping and help transform the activity into a powerful tool for sustainable development.

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Section: Discussionsupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Bees for Development: Brazilian Survey Reveals How to Optimize Stingless Beekeeping

et al. 2015

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“…In view of the psychophysical properties of human eyes and the variable visual acuity nature of human vision across fovea and periphery, the idea of differential magnification methods was proposed (Lee & Chan, ). Compared with the typical linear magnification method, a past study focusing on the learning effect (Lee & Chan, ) and this study focusing on the auditory cueing effect consistently showed the practicability of the differential magnification methods.…”

Section: Discussionmentioning

confidence: 99%

“…The results of the past study (Lee & Chan, 2009a) suggested there was competition for attentional resources between foveal and peripheral magnified objects. In the differential magnification methods, a lower level of scaling was applied in the high-resolution central fixation area, while the peripheral objects were scaled with a higher magnification power.…”

Section: Introductionmentioning

confidence: 91%

“…The difference in attentional deployment between the traditional linear and differential magnification methods accounted well for the unfavorable consequences of increased inspection time and target misses noted in the differential magnification methods. Since the magnifying lens in the past studies (Lee & Chan, , ) was designed to be smaller than the human's visual lobe area (Chan & Chiu, , ; Tsang, Chan, & Yu, , ), the scaled objects on the magnifying lens could have been discerned in a single fixation. Nevertheless, in the differential magnification methods, attention was deployed at the peripheral area prior to the central area of the lens.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Auditory Cues for Linear and Differential Magnification Methods on Visual Inspection Performance

Lee

Chan

2014

Hum Ftrs & Erg Mfg Svc

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The unfavorable consequence of biased attention to peripheral objects was reported with the use of a newly proposed differential magnification method by the authors. Given the favorable influence of auditory cueing on attention orientation, this study investigated the effectiveness of auditory cues in directing participants' attention from the peripheral to foveal areas of the differential magnifying lens for improving inspection performance. Thirty-nine Chinese undergraduates performed a simulated inspection task using a particular magnification method (between-participant factor). Three withinparticipant factors of auditory cue interval, target difficulty, and magnification power were tested. Objective performance measures of speed and accuracy and subjective evaluation using NASA task load index were collected and analyzed. The results showed that positive effects of auditory cues were found for the differential magnification methods but not for the traditional linear magnification method. Significant effects of target difficulty and magnification power were also found. It was concluded that the aid of auditory cues, which did not share the same attentional resource with the visual inspection task, proved to be an appropriate reminder for the differential magnification methods to improve participants' visual inspection performance. Attention should also be paid to selecting an appropriate auditory cue interval for search tasks of different target difficulties. The findings of this study have implications for the design of video magnifiers in the context of multimodal humanmachine interfaces. C 2014 Wiley Periodicals, Inc.

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Development of Training System for Appearance Inspection Using Motion Capture and Large Size Display

Nakajima

Fujimoto

2023

Lecture Notes in Production Engineering

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Effects of magnification methods and magnifier shapes on visual inspection

Cited by 15 publications

References 17 publications

Bees for Development: Brazilian Survey Reveals How to Optimize Stingless Beekeeping

Bees for Development: Brazilian Survey Reveals How to Optimize Stingless Beekeeping

Effects of Auditory Cues for Linear and Differential Magnification Methods on Visual Inspection Performance

Development of Training System for Appearance Inspection Using Motion Capture and Large Size Display

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