Driver Eye Scanning of Warning Signs on Rural Highways

1981 ◽  
Vol 25 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Helmut T. Zwahlen
Keyword(s):  
Recording System ◽  
Warning Signs ◽  
Warning Sign ◽  
Corneal Reflection ◽  
Rural Highways ◽  
Fixation Durations ◽  
Test Driver ◽  
Different Types ◽  
Scanning Behavior ◽  
Instrumented Vehicle

Eye scanning recordings were made for two drivers on a eight mile section of a rural hilly two-lane highway. Data was collected in both directions (total 66 warning signs). Nighttime data (with low beams) was also collected for one of the drivers. An instrumented vehicle with a corneal reflection technique television eye scanning recording system was used. Eye scanning behavior when approaching warning signs was analyzed for situations where there was no other traffic visible to the test driver. The results of this exploratory study suggest that: 1) drivers look practically at every warning sign, 2) drivers look on the average about 2.3 times at a warning sign, 3) the average first look distances for daytime and nighttime are about 450’ (137m) or about 7 seconds away from the warning signs, 4) the first look distances expressed as percentages of the maximum warning sign sight distances appear to be slightly larger for the nighttime condition than for the daytime condition (nighttime average 83%, daytime average 65%), 5) the fixation durations for looking at the warning signs during nighttime are considerably longer than during daytime (daytime average 0.45 seconds, nighttime average 0.75 seconds), and 6) different types of warning signs and warning sign arrangements appear to influence a driver's eye scanning behavior.

scholarly journals Technological video survaillance as protective tool of smart electricity meters from unauthorized access

2020 ◽  
Vol 2020 (2) ◽  
pp. 7-13
Author(s):  
Oxana Garifullaevna Koispaeva ◽  
Sergey Vladimirovich Golovko ◽  
Maksim Almansurovich Nadeev
Keyword(s):  
Video Surveillance ◽  
Surveillance System ◽  
Information Technologies ◽  
Video Recording ◽  
Video Stream ◽  
Recording System ◽  
Economic Feasibility ◽  
Electrical Networks ◽  
New Information ◽  
Different Types

The article touches upon the problems of interference in the electricity metering system and different types of electricity loss underestimation. It has been stated that in modern conditions the only effective way to identify and prevent violations is to install a remote electricity meter at the borderline of balance and operational responsibilities. РиМ 384.02 smart electricity meter is considered as an example. A picture of the device is presented and its main positive characteristics are listed. It has been proposed to introduce the twenty-four-hour video surveillance and video recording system into an expensive smart electricity meter in order to maintain the integrity and operability of the device. Video stream processing by means of machine vision and machine learning has been proposed. The economic feasibility of digitalization of the technological video surveillance system is being substantiated. The need of optimization of the electrical networks, the improvement of electricity metering system and of introducing the new information technologies in energy sales has been substantiated

scholarly journals Melting ice: "Warning Signs"

2007 ◽  
Vol 8 ◽  
pp. 66-73
Author(s):  
Ghana S. Malla
Keyword(s):  
Global Warming ◽  
Sea Level Rise ◽  
Sea Level ◽  
Atmospheric Temperature ◽  
Warning Signs ◽  
Warning Sign ◽  
Gradual Change ◽  
Liquid Form ◽  
Greenhouse Gasses ◽  
The Times

Melting ice is one of the concerns of world climate scientists and planners. It is the gradual change of ice in the liquid form caused by increase in atmospheric temperature. Global Warming is the increase in atmospheric temperature caused by greenhouse effects (C02, CH4, N20 and CFCs). Increase in temperature of atmosphere by 1oC that has been occurred since 1860 AD (IPCC, 1996). Scientists predicted that the Earth would warm by 1.4 to 5.8oC by 2100. In case of Nepal, increase of temperature was recorded 0.06oC per year (DHM). Sea level rise causes by melting ice is recent warning sign. The Times Center, 2007 estimated sea level rise would be 51 -140 cm by 2100 AD. It affects wide variety of ecosystem, water resources, agriculture, life and livelihoods of people in the world. However, its impact is largely unpredictable and uncertainty. There were series of glacial outburst in Nepal since 1964, destroying ecosystem of surrounding region caused by global warming. Therefore, IPCC member's countries with United State of America (USA) must act quickly to reduce greenhouse gasses to overcome threat of melting ice. The Journal of AGRICULTURE AND ENVIRONMENT Vol. 8, 2007, pp. 66-73

Abstract MP45: National Women’s Knowledge of Stroke Warning Signs, Overall and by Race/Ethnic Group

Circulation ◽  
2014 ◽  
Vol 129 (suppl_1) ◽  
Author(s):  
Heidi Mochari-Greenberger ◽  
Amytis Towfighi ◽  
Lori Mosca
Keyword(s):  
Ethnic Group ◽  
Representative Sample ◽  
Demographic Data ◽  
Heart Association ◽  
Warning Signs ◽  
Warning Sign ◽  
The Us ◽  
English Speaking ◽  
Nationally Representative ◽  
Us Census

Background: Early treatment is associated with better clinical outcomes in stroke, but women must recognize the warning signs of a stroke to reduce delays in treatment. The purpose of this study was to evaluate contemporary knowledge of stroke warning signs and intent to call 9-1-1 first if warning signs occur, among a nationally representative sample of women, overall and by race/ethnic group. Methods: A study of cardiovascular disease awareness and knowledge was conducted by the American Heart Association in 2012 among English speaking US women > 25 years identified through random digit dialing (N=1,205; 54% white, 17% black, 17% Hispanic, 12% other). Demographic data, including race/ethnic group, were evaluated using standardized categorical questions. Knowledge about warning signs of stroke, and what to do first if experiencing signs of a stroke, was assessed by standardized unaided questions. Data were weighted to reflect the US population of women based on the US Census Bureau’s March 2011 Current Population Survey, overall and within ethnic strata. Results: In 2012, half of women surveyed (51%) identified sudden weakness/numbness of face/limb on one side as a stroke warning sign; this did not vary by race/ethnic group. Loss of/trouble talking/understanding speech was identified by 44% of women, and more frequently among white versus Hispanic women (48% vs. 36%; p<.05). Fewer than one in four women identified sudden severe headache (23%), unexplained dizziness (20%), or sudden dizziness/loss of vision (18%) as warning signs, and one in five (20%) did not know one stroke warning sign; these results did not vary by race/ethnicity. The majority of women said that they would call 9-1-1 first if they thought they were experiencing signs of a stroke (84%), and this did not vary among black (86%), Hispanic (79%), or white/other (85%) women. Conclusions: Knowledge of stroke warning signs was low among a nationally representative sample of women, especially among Hispanics. In contrast, knowledge to call 9-1-1 when experiencing signs of stroke was high. These data suggest effort to improve recognition of the warning signs of stroke has potential to reduce treatment delay and improve outcomes among women.

Balance Beams and Suicide-Risk Screening

2021 ◽  
pp. 49-76
Author(s):  
Craig J. Bryan
Keyword(s):  
Mental Illness ◽  
Suicide Risk ◽  
Warning Signs ◽  
Screening Tools ◽  
Warning Sign ◽  
Suicidal Behaviors ◽  
Risk Screening ◽  
Illness Model ◽  
Over Time ◽  
Suicide Risk Screening

This chapter examines how the mental illness model of suicide has led us to place more faith than may be warranted in concepts such as suicide “warning signs” and suicide-risk screening tools. These concepts are notoriously unreliable indicators of emerging suicidal behaviors because they do not sufficiently reflect the inherently dynamic and ever-changing nature of suicide risk. Any given warning sign for suicide will be wrong much, much more often than it will be right. Even when multiple warning signs are experienced or expressed by an individual, this problem persists. One factor limiting the accuracy of suicide-risk screening is that thoughts about death and suicide fluctuate over time. Thus, we should move away from assuming that we must know who will and who will not attempt suicide to prevent these behaviors from occurring.

scholarly journals Determination of Curve Speed Zones for Mountainous Freeways

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Yongtao Liu ◽  
Jie Qiao ◽  
Yanting Hu ◽  
Tengyuan Fang ◽  
Ting Xu ◽  
...  
Keyword(s):  
Traffic Safety ◽  
Warning Signs ◽  
Driving Safety ◽  
Warning Sign ◽  
Speed Limit ◽  
Vehicle Speed ◽  
Estimation Model ◽  
Traffic Efficiency ◽  
Safety Warning ◽  
The Difference

Different vehicular speed limits may have an impact on the balance between safety and efficiency of travel on mountainous road corners associated with complex road conditions. Placing suitable speed limit warning signs does not merely effectively improve traffic safety but can also improve traffic efficiency. In this study, a global positioning system (GPS) terminal and Metrocount were used to collect vehicle speed data from more than 40 provincial-level curves in 8 provinces over the course of 1 year. Each road data collection time-period lasted approximately 8 hours. A descriptive statistics method was adopted by means of data screening and pretreatment. Additionally, both a velocity difference estimation model was established and a linear model of velocity differential estimation was constructed. Quantitative analysis was carried out on the safe speed, the driver’s expected speed, and the location of the speed limit warning signs. This demonstrated a positive correlation with the initial speed. When the difference in speed was greater than 15 km/h, a safety warning sign was required to limit the design speed to 80 km/h. A safety warning sign was also required when the corner radius was less than 300 m. The location of safety warning signs could be calculated based on the operating speed and taking driving safety and the visual range of drivers into consideration. The results can provide a theoretical reference for setting up appropriate safe speed limiting signs on road corners in mountainous areas.

scholarly journals Power Boat Operators' Visual Behavior Patterns

1977 ◽  
Vol 21 (3) ◽  
pp. 179-183 ◽  
Author(s):  
Susanne M. Gatchell
Keyword(s):  
Open Water ◽  
Corneal Reflection ◽  
Limited Access ◽  
Water Condition ◽  
Different Types ◽  
Processing Information ◽  
Visual Reference ◽  
Movement System ◽  
The Right ◽  
Speed Accuracy

Power boat operators' visual characteristics were recorded with a corneal reflection eye movement system in order to determine their foveal fixations. Data were collected while three (3) subjects performed three (3) different types of navigation tasks at three (3) velocities in two (2) boating environments. Results indicate that boaters scanned a significantly larger area to the right of the vessel during a limited access water condition than during an open water condition. More fixations to the right of the boat during a limited access water condition may be related to the fact that their cockpit station is on this side of the vessel. A significant velocity-navigation task interaction was observed for the duration parameters. It has been speculated that this effect was due to a speed/accuracy trade-off. During a channel task with increased velocities, the durations increased. McDowell (1975) related similar increases in automobile drivers' durations to processing information more accurately. The decrease in durations, which the boaters exhibited during compass and visual reference tasks, may be related to an increased information processing rate.

scholarly journals Warning signs to fasten seat belts result in higher rates of rear seat belt use in rideshare vehicles

2019 ◽  
Vol 63 (1) ◽  
pp. 2046-2050
Author(s):  
Kenneth Nemire
Keyword(s):  
San Francisco ◽  
Seat Belt ◽  
Rear Seat ◽  
Warning Signs ◽  
Future Research ◽  
Warning Sign ◽  
Seat Belts ◽  
Front Seat ◽  
Passenger Vehicles ◽  
Seat Belt Use

Using seat belts reduces traffic injuries and fatalities. Passengers in the rear seat typically use their seat belts less often than drivers or front-seat passengers. Seat belt use in the back is even less frequent in vehicles for hire such as taxi cabs and rideshare vehicles than in private passenger vehicles. This observational study of adult passengers video-recorded in rideshare vehicles in San Francisco found that a sign mounted at rear passenger seated eye level, and that warned of the risks of failing to wear a seat belt, resulted in significantly higher rates of seat belt use than for rear seat passengers not exposed to the warning sign. Results also showed that age, gender, and trip duration did not have a significant effect on rear seat belt use. Implications for future research and other countermeasures are discussed.

scholarly journals Awareness, Recognition, and Response to Stroke among the General Public—An Observational Study

2021 ◽  
Author(s):  
Sai Sirisha ◽  
Sireesha Jala ◽  
Sudhindra Vooturi ◽  
Praveen Kumar Yada ◽  
Subhash Kaul
Keyword(s):  
Risk Factors ◽  
Observational Study ◽  
Family Member ◽  
Correct Response ◽  
General Public ◽  
Tertiary Care ◽  
Warning Signs ◽  
Warning Sign ◽  
Care Hospital ◽  
Speech Impairment

Abstract Objective To evaluate awareness and response to stroke among the general public. Materials and Methods In this prospective, observational study, self-reported stroke awareness questionnaire was administered in 2000 consecutive participants who visited outpatient clinic of a tertiary care hospital. For data analysis, comparison included for awareness of stroke and response in case of stroke. Results The average age of the study participants was 39.64 ± 15.55 (17–85), with 651(32.6%) women. Among the respondents, 786(39.3%) participants mentioned stroke as blood clot in the brain; 268(13.4%) stated it as brain hemorrhage. Awareness of stroke was higher in people in cities (71.0 vs. 8.5%; p < 0.001) and graduates (75.3 vs. 60.9%; p < 0.001) or knew a family member or friend who had stroke (42.7 vs. 30.4%; p < 0.001). Most commonly recognized risk factors included stress (1,152; 57.6%) and hypertension (1,148; 57.4%). Most identified warning sign was weakness of one side of body (807; 40.4%) and speech impairment (658; 32.9%). Participants who were aware of stroke knew a greater number of risk factors (3.75 ± 2.88 vs. 2.45 ± 2.66; p < 0.001) and warning signs (2.85 ± 2.25 vs. 1.49 ± 1.41; p <0.001). Among 1,138 participants who were aware of stroke, 166 (14.6%) participants knew one correct response in case of a stroke, either call a doctor (49.3 vs. 35.0%; p <0.001) or call an ambulance (41.1 vs. 34.9%; p = 0.055). Participants who knew one correct response to stroke had at least a family member/friend who had stroke (44.1 vs. 34.3%; p < 0.022). Conclusion We report that among 56.9% of the participants who were aware of stroke most could not name more than four risk factors or three warning signs of stroke. Only 14.6% of those aware of stroke knew appropriate response to stroke.

scholarly journals Cancer burden and alarm signals: a community based study from Kerala, India

2020 ◽  
Vol 8 (2) ◽  
pp. 681
Author(s):  
Geethu Mathew ◽  
Shaliet Rose Sebastian ◽  
Anoop I. Benjamin ◽  
Vinay Goyal ◽  
Abey Sushan ◽  
...  
Keyword(s):  
Female Gender ◽  
Warning Signs ◽  
Health Concern ◽  
Warning Sign ◽  
Community Based ◽  
Water Testing ◽  
Treatment And Prevention ◽  
Breast Examination ◽  
Study Population ◽  
Kerala State

Background: Cancer is emerging as a major public health concern in many countries including India. Kerala state has the highest burden of cancer in the country. Objective of this study was to estimate the prevalence of diagnosed cancers, warning signs and selected risk factors of cancer in Kadapra Panchayath of Pathanamthitta district, Kerala.Methods: A total of 16,391 population was covered by door to door survey using a structured questionnaire. The questionnaire collected information on the sociodemographic variables of the residents, source of water supply, warning signs of cancer and details of diagnosed cancer cases.Results: The mean age of the population was 40.9+21 years. The prevalence of diagnosed cases of cancer in our study population was 776/100,000 population. Breast cancer was the most common cancer (43.5%) identified in the population. The prevalence of any warning sign among the study population was 220/100,000 population. Breast lump was the common warning sign identified. Increasing age and female gender were the factors found to be significantly associated with cancer.Conclusions: As prevalence of cancer was found to be high in this population, an active community based screening along with teaching self-breast examination to the women in the community are required. Improving community awareness could help in early diagnosis, treatment and prevention. Soil and water testing for carcinogens is recommended.

scholarly journals MARSIPAN-based Early Warning Signs System: A full Audit cycle in the Inpatient Eating Disorders Ward

2019 ◽  
Author(s):  
Konstantinos Ioannidis ◽  
Gabriella Lewis ◽  
Jane Waterston ◽  
Carol Connolly ◽  
Felix Clay ◽  
...  
Keyword(s):  
Eating Disorders ◽  
Early Warning ◽  
Warning Signs ◽  
Warning Sign ◽  
Design Problems ◽  
System A ◽  
Early Warning Signs ◽  
Early Warning Sign ◽  
Audit Cycle ◽  
Future Work

Aims and method: We aimed to evaluate the MARSIPAN-guidance-adapted Early Warning Sign system (MARSI-MEWS) in respect to clinical governance standards for accuracy and completion. We performed a full audit cycle; between audit rounds, we addressed intrinsic information design problems related to the form in operation and provided guidance to staff on how to use this specialized tool. Result: Overall completeness of recording and scoring of MARSI-MEWS improved from 82.0% to 99.5% (χ2, p&lt;0.001). The accuracy of MARSI-MEWS scoring improved from 80% to 93% (χ2, p&lt;0.001). False recording of diastolic blood pressure dropped from 98% to 0% (χ2, p&lt;0.001). Clinical implication: This result suggests that the MARSI MEWS track-and-trigger system is suitable for use in inpatient eating disorders ward in regard to its completeness and accuracy standards. Specific training for staff might be essential in order to complete the tool effectively, and the validity of the tool should be tested in future work.

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