巻号一覧
51 巻 (2015)
- 6 号 p. 383-
- 5 号 p. 293-
- 4 号 p. 217-
- 3 号 p. 157-
- 2 号 p. 79-
- 1 号 p. 1-
- Supplement 号 p. S10-
前身誌
51 巻, Supplement 号
選択された号の論文の216件中201～216を表示しています
The 17th Japan-Korea Joint Symposium on Ergonomics 2015
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Mi-Hyun Choi, Hyung-Sik Kim, Jung-Chul Lee, Ji-Hye Baek, Sung-Jun Park ...2015 年 51 巻 Supplement 号 p. S462-S464
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーThe purpose of this study is to analyze causes of physical injuries, the types of accident, and affected body parts based on real-life accidents of eldelry homecare patients with senile dementia. The accident survey was conducted by visiting the patients' residential areas. The questionnaire was completed by 55 homecare patients with senile dementia (75.9±7.0 years). The questionnaire was used to solicit information on the time, place, cause, and type of accident, and the affected body regions. Frequency analysis was performed for the cause, type, and body region of each physical injury. Cross-tabulation frequency analysis was also performed for the cause, type, and body region of each physical injury. The body parts most affected by physical injuries were, in decreasing order of involvement, knees, due to tumbling, colliding, slipping, and falling; shoulder, due to tumbling; head due to colliding; waist due to slipping; and waist and hand due to falling in order. The most common types of injuries were, in order, bruise, abrasion, sprain, fracture, and burn.抄録全体を表示PDF形式でダウンロード (398K) -
Tomohiro Moriya, Katsutoshi Tadokoro, Keisuke Suzuki2015 年 51 巻 Supplement 号 p. S466-S469
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーIn the music therapy, activation of cerebral function is effective for minimizing the progress of dementia. Additionally, mental stability and reducing mental stress through the music are useful for the improvement of patient’s QOL. In this study, we investigated the activation level of cerebral function during the combination of singing, listening and resting. Furthermore, we investigated the relation between the physical property of music or the impression of music and the effect of listening music on mental condition under the stressful condition. In this investigation, we proposed a new index which can quantify the active status of cerebral function. This index is based on the distance between the center of gravity and its locus which consists of the absolute value of oxyHb and the differential value of oxyHb. At the same time, we analyzed the CSI which is an index of sympathetic nerve in order to investigate the fluctuation of autonomic nerve system. Through these investigations, we confirmed that it is possible to activate the cerebral function by decreasing the CSI efficiently after singing. Moreover, we concluded that familiar sound and the sound including 1/f fluctuation are effective for reducing the mental stress and calming of cerebral function.抄録全体を表示PDF形式でダウンロード (609K) -
Hiroshi Kobayashi, Keisuke Suzuki, Masayuki Karaki2015 年 51 巻 Supplement 号 p. S470-S473
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーThe medical inspection which detects the dementia in early stage is difficult because elderly persons have a negative impression to the inspection. For this reason, the purpose of this study is to propose a screening method which can detect the dementia by using the simple olfactory identification test. Authors focused on the deterioration of the olfactory function. Before the investigation, authors selected the seven odors which can be easily identified and which has not uncomfortable impression. These seven odors were selected among twelve odors that are included in OSIT-J. OSIT-J is an identification test of odor to evaluate the olfactory function. Experimental participants were eight healthy elderly people and fifty-five elderly people with dementia living at the nursing home. As a result, we clarified that olfactory function of elderly people with dementia is significantly deteriorated (p<0.01) than healthy elderly people. In the results of receiver operating characteristic (ROC) analysis, we clarified that the investigation using seven odors has high accuracy to screen dementia (Area Under the Curve：AUC=0.93). Through these investigations results, we devised a method which can screen 85% of dementia patients accurately. The devised method may detect the dementia more accurately by increasing the experimental participants.抄録全体を表示PDF形式でダウンロード (479K) -
Sanghyun Kwon, Sunghwan Park, Joong Hee Lee, Myung Hwan Yun2015 年 51 巻 Supplement 号 p. S474-S477
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーRecently, various kinds of interaction types have been widely utilized in numerous application devices. Especially in automobiles, rotary controllers and touch screens have been most prevalently adopted in controlling many functions of invehicle information systems (IVIS) while driving. In-vehicle devices should be much more carefully considered due to the dual task properties. Though many studies on the usability across interaction types of controllers have been conducted, the researches on comparison of differences in driver’s distraction between rotary controllers and touch screens for controlling the in-vehicle devices has been absent yet. The aim of this study is to analyze the driver's distraction across the two interaction types under driving situations. In this end, a user experiment was conducted in a driving simulator environment, to examine driver' distraction. The primary driving performance, secondary task performance, and visual distraction were measureed and evaluated. Based on the results, the distraction level of each interaction type was scrutinized. This study could be helpful in comprehension of which interaction types are more suitable in terms of safety and usefulness for invehicle devices under the driving situation.抄録全体を表示PDF形式でダウンロード (557K) -
Wonjoon Kim, Taebeum Ryu, Yushin Lee, Donggun Park, Myung Hwan Yun2015 年 51 巻 Supplement 号 p. S478-S483
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーThis study aims to determine the affective response that occurs when the driver listens to door opening sound of vehicles by analyzing the relationship of sound parameters and the affective satisfaction. For the purpose of this study, we conducted an experiment with 26 vehicles and 30 subjects. The subjects evaluated the door opening sounds of the vehicles on affective satisfaction by answering a standard affective evaluation. Through multiple regression analysis, the result of evaluation was utilized to create a model that can presume the satisfaction of door opening sound. As the result of the regression analysis, ‘SharpnessZ', ‘Short-term loudness', and ‘Roughness' turned out to be the sound parameters that have significant impact on improving the satisfaction of vehicle door opening sound. Moreover, the affective adjectives ‘Unstable', ‘Quiet', and ‘Clear' were confirmed to be the affective variables that influence the auditory satisfaction in the door opening quality. Through statistical analysis on the satisfaction of the opening sounds, we expect that a satisfaction model of vehicle door opening sounds can be developed based on the auditory parameters and the affective adjectives of vehicle door opening quality—to further aid designing procedure of vehicle door opening quality for improving affective satisfaction.抄録全体を表示PDF形式でダウンロード (475K) -
Daewon Choi, Kimin Ban, Jinsung Jung, Eui S. Jung2015 年 51 巻 Supplement 号 p. S484-S487
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーThe aim of this research is to figure out design variables that have an effect on user satisfaction for the operation of automotive switch and to investigate the relative importance of the variables and the utility of attribute level. To achieve these goals, an empirical evaluation was made through operating of automotive switchs. First, five design variables were selected for the external design elements and the internal design variables of switch were chosen based on the opinions of design experts and previous studies. Next, an experiment was designed using the fractional factorial design for 18 alternatives by 5 design variables (stroke, peak force, drop force, angle of surface, and curvature) that affect user satisfaction. Then, the level of satisfaction of each alternative were evaluated on 100-point scale by 22 subjects. Finally, ANOVA was conducted to verify the significant level of the 5 design variables of the automotive switch. A conjoint analysis was used to investigate the relative importance of each design variable by the utility of attribute level. As a result, the design variables turned out to be of significant importance. Moreover, the result showed relative importance for each design variable and utility of attribute level. It is expected that the results of this study could be utilized to improve the affective quality of the automotive switch.抄録全体を表示PDF形式でダウンロード (395K) -
Sanghyun Kim, Fumiya Ohta, Takashi Kawai, Katsumi Watanabe, Reiko Seto ...2015 年 51 巻 Supplement 号 p. S488-S491
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーThis paper was intended to examined whether the body sway during viewing stereoscopic three-dimensional (3D) tilted images was stable or not. Tilted 3D image was composed of directional information in which monocular disparity tilled by using a simple gradient depth map. Experiments were carried out to evaluate body sway using CG driving simulator in the five viewing conditions; left tilted 3D, right tilted 3D, forward tilted 3D, backward tilted 3D, and 2D condition. Standing twenty participants' body sway was measured by using balance wii board while driving and judging on direction before trespassing the intersection. As a result, it was suggested that body sway was significantly increased to select same direction in left and right tilted image conditions.抄録全体を表示PDF形式でダウンロード (900K) -
Kyung-Tae Lee, Yeong-Hun Lee2015 年 51 巻 Supplement 号 p. S492-S495
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーThis paper experimentally derived the optimal control-display ratio and the expected movement time of the foot-controlled isotonic mouse that positioning was controlled by a right pedal and clicking was performed by a left pedal. The results showed that both the index of difficulty and the control-display ratio varied the total movement time in a target acquisition task on the monitor. The optimal control-display ratio 0 was 3.76 in the index of difficulty below 3.0. The results could be used in design of a foot-controlled isotonic mouse for the arm-impaired users.抄録全体を表示PDF形式でダウンロード (500K) -
Sangeun Lee, Kimin Ban, Jiwon Jung, Eui S. Jung2015 年 51 巻 Supplement 号 p. S496-S499
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーThe recent improvement of wireless communication technology has triggered an increase in the frequency and diversification of the information process through smart-phones. Accordingly, interest in the efficient page shifting process based on user convenience is increasing. This study focuses on the use of the flicking gesture to derive the efficient touch area that reflects the features of the individual finger input when user shifts pages. The experiment was conducted with 4 types of alternatives obtained from a full factorial design according to four degrees of difficulty level (3.58/4.64/5.66/6.68). The dependent variables were used to measure completion time and error rate. And the subjective variable was measured with the comfort level of experiment participants. For the testing apparatus, Apple's I Phone 5S was used. The results showed that significant differences with respect to the alternatives and page shift methods through SNK post hoc analysis differed greatly. For the analysis, ANOVA was used, and optimal proposal was derived. As a result this study suggests a practical approach that is necessary for designing an efficient page switching method on the touch interface.抄録全体を表示PDF形式でダウンロード (376K) -
Seung-Hyun Kwak, Sang-Hyeok Seo, Hyung-Sik Kim, Soon-Cheol Chung, Byun ...2015 年 51 巻 Supplement 号 p. S500-S505
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーThis study was aimed to find out whether there was some difference comparing driving performance and the autonomic nervous system between normal state and sleep deprivation state, between sleep deprivation state and 100% Lavender oil exposed state and between sleep deprivation State and 100% Peppermint oil exposed state, while driving in a driving environment using a driving simulator. The subjects were 10 male drivers between 20 and 45 years age whose age in average was 30.9±7.7 years and who had been driving for 7±6.6 years, the road situation of three-lane road was copied as a driving environment, and the subjects were instructed to keep 1st lane, to keep a constant speed of 110km/h. In this driving condition, the subjects were instructed to steps on the brake until the speed of car is 0km/h, according to "STOP" sign shows in red which displayed on the screen suddenly. As a result of analyzing the reaction distance, there was a significant difference (p<0.05) between normal state and sleep deprivation state. Also, as a result of analyzing the speed average, there was no significant difference all groups. As a result of analyzing the LF/HF ratio, there was no significant difference before and after in all groups. As a result of analyzing the LF/HF ratio after unexpected situation, there was a significant difference (p<0.1) between sleep deprivation state and peppermint state. The results suggest that it could be judged that expressway accidents at 0 a.m. - 6 a.m. are closely related to drowsy driving. This phenomenon is thought monotonous driving environment and lack of sleep is coupled to lower the driving performance, and the peppermint has a statistically significant difference on the change in driving performance comparing sleep deprivation, such as the reaction distance. this means that the odor may be possible to temporarily driving performance improve.抄録全体を表示PDF形式でダウンロード (809K) -
Joonwoo Son, Myoungouk Park2015 年 51 巻 Supplement 号 p. S506-S509
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーIn the last years, a great deal of research has demonstrated that driving simulator studies can be a suitable alternative to field studies. However, a driving simulator must be correctly validated for each specific aspect of driver behavior such as speeds, steering control, driver response, etc.
This paper aims to investigate a behavioral validation of the interactive fixed-base driving simulator in order to verify the DGSIT driving simulator's usefulness as a tool for distraction research on a two-lane highway. Fifteen drivers were asked to complete three levels of a cognitive distraction task (n-back task) concurrently while driving either an instrumented vehicle or the simulator. The three pairs of distacted driving behaviors were analyzed in terms of absolute validity and relative validity. Results suggested that the participants' simulated driving behavior were not significantly different from the on-road driving behavior, establishing the relative validities. Especially, heart rate established absolute validity as well.抄録全体を表示PDF形式でダウンロード (361K) -
Han Seong Choe, Kwan Sub Lee, Hwa Kyung Shin2015 年 51 巻 Supplement 号 p. S510-S512
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーThis study was aimed to analyze the driving performance on the bimanual and unimanual steering during the simulated driving after stroke. Forty five patients with stroke and healthy adults were recruited for this study. 15 subjects were healthy adults and 20 subjects were stroke patients. A virtual reality (VR) driving simulation system (UC-win/Road Ver .5) was used as the experimental apparatus for driving task. Participants steered with paretic, non-paretic and both arms in the straight road of simulator. Main outcome measures were offset from the Lane On Center(LOC). In the main experiment, the participants drove on the 5km straight road 3 times, the average of which was used for analysis. Repeated two-way ANOVA was used to compare the groups and Boneferroni was employed for a post-hoc test. The RMSE(Root Mean Square Error) showed a significant difference by the use of the hand and group (p<0.05). It is thought that bimanual driving is better to activate more brain neurons in post stroke hemiparetic patients and that using both bimanual and unimanual driving is beneficial for the patients to use the hemiparetic side and improve overall driving performance. More driving rehabilitation and visual field training are needed for the left hemiparetic patients who have right hemisphere damage.抄録全体を表示PDF形式でダウンロード (279K) -
Joonwoo Son, Myoungouk Park, Bawul Kim2015 年 51 巻 Supplement 号 p. S514-S517
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーIt is known that driving style is highly correlated with safety and fuel economy. In general, drivers who have moderate driving style shows safer driving behavior than aggressive drivers, and they may achieve higher fuel efficiency than their aggressive counterpart. Some previous studies found forward collision warning systems supported to change driving style toward safer behavior. However, their potential benefit of improving fuel economy was not clearly evaluated. This paper aims to analyze the effect of the advanced driver assistance systems (ADAS) on driving style and fuel economy using field operational test data from 52 participants. A half of participants were supported by ADAS and the others were not supported. Each participant drove approximately 5.5 km of rural road (about 10 minutes), 6.2 km of urban road (about 25 minutes) and 9.6 km of highway (about 10 minutes). The results suggested that there has been significant interaction between ADAS and gender on driving style, and consequently ADAS supported younger male drivers' improvement in fuel efficiency was observed.抄録全体を表示PDF形式でダウンロード (373K) -
Katsuya Gohda, Keisuke Suzuki, Shun'ichi Doi, Toshihiko Tsukada, Keiic ...2015 年 51 巻 Supplement 号 p. S518-S521
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーAdaptive Driving Beam (ADB) is being used in the market. It is expected that the technology of detection for pedestrians and the control technology of head-light distribution advances in the future. Therefore, we propose “Advanced ADB” as a new head-light distribution pattern. Advanced ADB enables not only to enhance the driver's visibility without the glare of forward drivers, but also to make the driver recognize pedestrian's location by flashing. The purpose of this study is to establish an evaluation environment in terms of driver's visibility for the design of Advanced ADB. Specifically, we proposed an evaluation method which evaluates driver's behavior and driver's mental workloads quantitatively in using Low-beam, High-beam, ADB and Advanced ADB in a Driving Simulator (DS). At first, we set up the conditions of High-beam, Low-beam, ADB and the advanced ADB in DS. Second, we set up a scenario that a pedestrian crosses from right side to left side when a driver goes straight on a road. In conclusion, we established an evaluation environment to design Advanced ADB by evaluating driver's behavior and driver's mental workloads regarding four head-light distribution patterns.抄録全体を表示PDF形式でダウンロード (533K) -
Masaya Miyazaki, Keisuke Suzuki2015 年 51 巻 Supplement 号 p. S522-S525
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーIn this study, we constructed a Kagawa version ISA (Intelligent Speed Adaptation) system which can reduce the pedestrian-car accident at intersections and exceeding speed on a road. The suggested ISA system presents the warning information on a display and warning sound when the vehicle exceeds the speed limit and the vehicle is close to the intersection. Furthermore, we focused on optimizing the method of presenting information based on the characteristics of driving behavior. DSQ is a questionnaire which is able to clarify the characteristic of vehicle driver. Second, we classified driving characteristic of vehicle driver to four groups in terms of cluster analysis. Finally, we optimized the method of presenting information for each driver group based on the result of driving simulator experiment. In addition to this, we developed ISA system which can be mounted on the vehicle.抄録全体を表示PDF形式でダウンロード (888K) -
2C5-4 Change of Driving Behaviors with Stopping Alert at Intersection for Individual Elderly DriversSeunghee Hong, Takafumi Asao, Keisuke Suzuki, Byungchan Min, Shun'ichi ...2015 年 51 巻 Supplement 号 p. S526-S531
発行日: 2015/06/13
公開日: 2015/08/06
ジャーナル フリーAccording to traffic accident reports, many of the accidents that occur at intersections are caused by elderly drivers, and development of an assistant system that can prevent non-stopping accidents (i.e., accidents that occur by not stopping when required) is currently a pressing need. To develop an anti-stopping alert, it has been assumed that an alarm that informs the driver about the impending approach of an intersection is effective. However, a uniform alarm system cannot be expected to influence the individual differences among elderly drivers. Then, audio-visual assistance systems that consist of a nudge that informs drivers about the existence of an intersection and of an approach alarm that follows the nudge, as well as of a display and a warning with sound and voice, were designed based on the timing when braking occurs and on a given elderly driver's braking behavior when approaching an intersection. In this research, considering an elderly driver's cognition, judgment capability, and individual driving abilities, and while investigating individual elderly drivers' vision capabilities and judgment functions, a questionnaire survey on the posture and concerns about driving was conducted in advance. Subsequently, using the driving simulator of a city road, the driving behavior of an elderly driver from braking behavior to stopping performance was observed; furthermore, driving behavioral changes following the proposed driving assistance alarm were analyzed. The result of our analysis demonstrated that elderly drivers differed in their response to the assistance alarm according to their cognition and judgment capabilities, their experience, and driving style. The proposed system's effectiveness was apparent when the alarm was adapted to each individual's capabilities.抄録全体を表示PDF形式でダウンロード (611K)