scholarly journals Influence of Radar and Gauge Rainfall Data Sources on the Analysis of Spatial Distribution of Traffic Accidents and Rainfall Events

2020 ◽  
Vol 10 (20) ◽  
pp. 7327
Author(s):  
Seong-Sim Yoon ◽  
Un Ji ◽  
Inhyeok Bae
Keyword(s):  
Spatial Distribution ◽  
Traffic Accidents ◽  
Reference Value ◽  
Radar Data ◽  
Rainfall Data ◽  
Assessment Tools ◽  
Severe Injury ◽  
Rainfall Distribution ◽  
Rainfall Events ◽  
Study Results

The records of 24,797 traffic accidents (9039 involving fatalities or severe injury) during rainy conditions from 2007 to 2017 in Seoul, South Korea, were used to analyze the spatial distribution of the traffic accidents and rainfall events based on radar and gauge rainfall data. According to the spatial correspondence analysis between rainfall distribution and accident locations for localized and stratiform rain events, radar data in a two-dimensional grid (250 by 250 m) of 10 min temporal resolution benefited the localized rainfall distribution concerning the accident location. The relative accident rate (RAR) from radar data, which was used as a quantitative reference value for the effect of rainfall on traffic accidents, was about 18% higher than that from gauge rainfall. The radar data more clearly classified the number of traffic accidents during rainy conditions because its spatial distribution was more precise for all accidents. In addition, the RAR estimation of accidents involving fatalities and severe injury during rainfall could provide information on the district in which traffic accidents increase due to rainfall. The study results support the adoption of radar-derived rainfall data to analyze the influence of rainfall on accidents and the development of more accurate risk-assessment tools for drivers and planners.

scholarly journals Observation of Short Duration Rainfall in Yogyakarta

2019 ◽  
Vol 8 (11) ◽  
pp. 2741-2745
Keyword(s):  
High Resolution ◽  
Short Duration ◽  
Distribution Patterns ◽  
Rainfall Event ◽  
Rainfall Data ◽  
Observation Data ◽  
Rainfall Distribution ◽  
Rainfall Events ◽  
Hourly Rainfall ◽  
Mitigation Effort

On the observation of hourly rainfall data in Java Island, for the modelling watershed purpose, it can be seen that short duration rainfall events are the most dominant. The percentage of short duration rainfall event is almost 70% of the observation data. By using the high resolution of hourly rainfall data with 5 minutes’ intervals, it can be easily to describe the rainfall distribution patterns that occur. This research observed high resolution of hourly rainfall data in hilly and mountainous at Mount Merapi area in Yogyakarta. It purposed to mitigation effort due to the rainfall events that often falls with short duration and high intensity.

scholarly journals Point-Based Rainfall Intensity Information System in Mt. Merapi Area by X-Band Radar

2019 ◽  
Vol 14 (1) ◽  
pp. 80-89 ◽  
Author(s):  
Santosa Sandy Putra ◽  
Banata Wachid Ridwan ◽  
Kazuki Yamanoi ◽  
Makoto Shimomura ◽  
Sulistiyani ◽  
...  
Keyword(s):  
Satellite Data ◽  
Early Warning Systems ◽  
Radar Data ◽  
Rain Gauge ◽  
Data Grid ◽  
Rainfall Data ◽  
Rainfall Events ◽  
Rain Gauge Data ◽  
X Band ◽  
Gauge Data

An X-band radar was installed in 2014 at Merapi Museum, Yogyakarta, Indonesia, to monitor pyroclastic and rainfall events around Mt. Merapi. This research aims to perform a reliability analysis of the point extracted rainfall data from the aforementioned newly installed radar to improve the performance of the warning system in the future. The radar data was compared with the monitored rain gauge data from Balai Sabo and the IMERG satellite data from NASA and JAXA (The Integrated Multi-satellitE Retrievals for GPM), which had not been done before. All of the rainfall data was compared on an hourly interval. The comparisons were conducted based on 11 locations that correspond to the ground rainfall measurement stations. The locations of the rain gauges are spread around Mt. Merapi area. The point rainfall information was extracted from the radar data grid and the satellite data grid, which were compared with the rain gauge data. The data were then calibrated and adjusted up to the optimum state. Based on January 2017–March 2018 data, it was obtained that the optimum state has a NSF value of 0.41 and R2value of 0.56. As a result, it was determined that the radar can capture around 79% of the hourly rainfall occurrence around Mt. Merapi area during the chosen calibration period, in comparison with the rain gauge data. The radar was also able to capture nearby 40–50% of the heavy rainfall events that pose risks of lahar. In contrast, the radar data performance in detecting drizzling and light rain types were quite precise (55% of cases), although the satellite data could detect slightly better (60% of cases). These results indicate that the radar sensitivity in detecting the extreme rainfall events must receive higher priority in future developments, especially for applications to the existing Mt. Merapi lahar early warning systems.

scholarly journals Investigation of Trends, Temporal Changes in Intensity-Duration-Frequency (IDF) Curves and Extreme Rainfall Events Clustering at Regional Scale Using 5 min Rainfall Data

Water ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 2167 ◽  
Author(s):  
Bezak ◽  
Mikoš
Keyword(s):  
Regional Scale ◽  
Extreme Rainfall ◽  
Rainfall Data ◽  
Extreme Rainfall Event ◽  
Extreme Rainfall Events ◽  
Rainfall Events ◽  
Significance Level ◽  
The Past ◽  
Study Results ◽  
Intensity Duration Frequency

High-frequency rainfall data is needed in different practical hydrologic applications, such as the construction of the intensity-duration-frequency curves (IDF). This paper presents an investigation of trends (station-wise and regional) for several rainfall durations that were constructed based on the 5 min rainfall data. Moreover, changes in IDF results for two 22-year sub-samples were also analyzed. Additionally, changes in extreme events clustering at the regional scale were also analyzed. Ten rainfall stations (44 years of data 1975–2018) located in Slovenia (central EU, approx. 20,000 km2) were used in this study. Results indicate that no clear pattern in the detected trends can be found based on the analyzed stations. However, all the statistically significant trends at the significance level of 0.05 for the 5 min rainfall data were negative. Moreover, regional trends for this duration were also statistically significant. The changes in the design rainfall events between two equal sub-samples (1975–1996, 1997–2018) were between −30% and 60%. The investigation of changes in extreme rainfall event clustering indicated that extreme 5, 30, and 60 min events could more frequently occur a few days earlier in spring or summer compared to the past period. On the other hand, longer duration events (i.e., 360 and 720 min) tend to more frequently occur a few days later in autumn compared to the past. In most cases, changes are not statistically significant.

scholarly journals Effect of spatial and temporal variability of gauged and radar rainfall data on hydrological modelingof urban basins

RBRH ◽  
2021 ◽  
Vol 26 ◽  
Author(s):  
Victor Costa Pontes ◽  
Carlos Ruberto Fragoso Jr. ◽  
Marllus Gustavo Ferreira Passos das Neves ◽  
Vladimir Caramori Borges de Souza
Keyword(s):  
Spatial Distribution ◽  
Urban Areas ◽  
Weather Radar ◽  
Radar Data ◽  
Rainfall Data ◽  
Spatial And Temporal Variability ◽  
Peak Time ◽  
Radar Rainfall ◽  
Storm Water Management Model ◽  
Runoff Modeling

ABSTRACT In urban areas, rainfall-runoff modeling provides large uncertainties due to the difficulty in representing the spatial distribution of rainfall events. In this context, the this work aims to evaluate the effect of temporal and spatial of rainfall data (weather radar and distributed rainfall gauges network) on runoff estimation in a urban basin. The Reginaldo basin, inserted in the urban area of the Maceió city, capital of state of Alagoas (Brazil), has a reasonable availability of rainfall datal covered with a high number and spatial distribution of rain gauges and weather radar, which was used as input of a hydrological model The EPA Storm Water Management Model (SWMM) has been used with 3 analysis rainfall scenarios: (i) considering uniform rainfall distribution based on measured average rainfall, (ii) considering distributed rainfall using catchment discretization, and (iii) considering distributed rainfall using radar cell discretization. In order to evaluate the model outcomes, we analyzed four hydrological output variables: (i) the peak flow; (ii) the peak time; (iii) the volume flowed and (iv) the volume losses. Based on this criterion, it was clear that, considering he analyzed scenarios, the effect of spatial distribution of rainfall data on hydrological response in small urban basins, with high impervious coverage, was not divergent for the analyzed scenarios and that the radar data showed significantly higher data resolution than rainfall gauges.

scholarly journals P014: Incidental findings in trauma whole-body CT scans: a systematic review

CJEM ◽  
2020 ◽  
Vol 22 (S1) ◽  
pp. S69-S69
Author(s):  
V. Tsang ◽  
K. Bao ◽  
J. Taylor
Keyword(s):  
Systematic Review ◽  
Incidental Findings ◽  
Traffic Accidents ◽  
Road Traffic ◽  
Subsequent Treatment ◽  
Whole Body ◽  
Trauma Patients ◽  
Patient Demographics ◽  
Study Results

Introduction: Whole-body computed tomography scans (WBCT) are a mainstay in the work-up of polytrauma or multiple trauma patients in the emergency department. While incredibly useful for identifying traumatic injuries, WBCTs also reveal incidental findings in patients, some of which require further diagnostic testing and subsequent treatment. Although the presence of incidental findings in WBCTs have been well documented, there has been no systematic review conducted to organize and interpret findings, determine IF prevalence, and document strategies for best management. Methods: A systematic review was conducted using MEDLINE, PUBMED, and EMBASE. Specific journals and reference lists were hand-mined, and Google Scholar was used to find any additional papers. Data synthesis was performed to gather information on patient demographics, prevalence and type of incidental findings (IFs), and follow-up management was collected. All documents were independently assessed by the two reviewers for inclusion and any disagreements were resolved by consensus. Results: 1231 study results were identified, 59 abstracts, and 12 included in final review. A mean of 53.9% of patients had at least one IF identified, 31.5% had major findings, and 68.5% had minor findings. A mean of 2.7 IFs per patient was reported for articles that included number of total IFs. The mean age of patients included in the studies were 44 years old with IFs more common in older patients and men with more IFs than women. IFs were most commonly found in the abdominal/pelvic region followed by kidneys. Frequency of follow-up documentation was poor. The most common reported mechanisms of injury for patients included in the study were MVA and road traffic accidents (60.0%) followed by falls from >3m (23.2%). Conclusion: Although there is good documentation on the mechanism of injury, patient demographics, and type of IF, follow-up for IFs following acute trauma admission lacks documentation and follow-up and is an identified issue in patient management. There is great need for systematic protocols to address management of IFs in polytrauma patients.

Assessing employers’ stigmatizing attitudes toward people with disabilities: A brief report

2021 ◽  
pp. 1-7
Author(s):  
Jill Bezyak ◽  
Kanako Iwanaga ◽  
Erin Moser ◽  
Fong Chan
Keyword(s):  
People With Disabilities ◽  
Assessment Tools ◽  
Negative Attitudes ◽  
Negative Stereotypes ◽  
Individuals With Disabilities ◽  
Marginalized Groups ◽  
Study Results ◽  
Stigmatizing Attitudes ◽  
Areas Of Concern ◽  
Unidimensional Structure

BACKGROUND: People with disabilities are one of the most marginalized groups in society, and having a disability significantly increases the likelihood of unemployment or underemployment. The reluctance to hire individuals with disabilities is significantly influenced by the longstanding, negative stereotypes of people with disabilities. OBJECTIVE: To better understand employers’ negative attitudes toward individuals with disabilities, assessment tools must properly capture factors contributing to this stigma. METHODS: The Employers’ Stigmatizing Attitudes toward People with Disabilities Scale (ESATPD) was validated in the current study. RESULTS: Results of the exploratory factor analysis indicate a strong, unidimensional structure of the scale accounting for 47.14% of the total variance with a sample. The single ESATPD factor was labeled employment stigma. In addition, higher levels of employers’ stigma were related to negative attitudes toward disability, decreased support of recruitment efforts, as well as decreased intentions of hiring people with disabilities. CONCLUSION: Results support the implementation of tailored interventions directed at specific areas of concern for employers and employees in hiring positions.

Sustainable international tourist hotels: the role of the executive chef

2017 ◽  
Vol 29 (7) ◽  
pp. 1873-1891 ◽  
Author(s):  
Tung-Hsuan Wan ◽  
Yun-Shu Hsu ◽  
Jehn-Yih Wong ◽  
Shin-Hao Liu
Keyword(s):  
Delphi Method ◽  
Reference Value ◽  
Competency Framework ◽  
Content Type ◽  
Modified Delphi ◽  
International Tourist ◽  
Study Results ◽  
Critical Competencies ◽  
And Training ◽  
Behavioral Event

Purpose Human capital is the most important determinant of the Hospitality industry’s success. Executive chefs should be skilled in both management and culinary arts, in addition to ensuring the success of the entire hospitality division. The study aims to understand the competencies of executive chefs in international tourist hotels in Taiwan. Design/methodology/approach Literature review and behavioral event interviews were conducted with ten executive chefs and executive sous chefs. The modified Delphi method verified the results using 15 experts. Findings A competency framework was created, with four quadrants – managerial, operational, behaviors and skills – to classify executive chefs’ competencies. Each competency was further divided into sub-competencies – culinary research, emotional control, negotiation skills, job guidance and proactive thinking ability – for 25 items. Quadrants I and II are hard competencies that can be improved through education and training, whereas the third and fourth are soft competencies that require more time for development in workers. Practical implications The two-step study developed a competency framework with a practical reference value. The study results could be utilized by human resources managers during their companies’ training, recruitment, selection and promotion. Originality/value Besides the Delphi method, a deep behavioral event interview that enabled determining critical competencies was also used to collect data. The results obtained could be used to structure schools’ curricula. Collaborations between the hospitality industry and schools could help develop better curricula and training plans to maximize the availability of educational resources.

scholarly journals Posttraumatic Pneumopericardium: A Sign of Severe Injury or Radiodiagnostic Rarity?

2006 ◽  
Vol 49 (2) ◽  
pp. 129-132 ◽  
Author(s):  
Vladimír Lonský ◽  
Jiří Manďák ◽  
Jan Harrer ◽  
Martin Tuna ◽  
Petr Dvořák ◽  
...  
Keyword(s):  
Transesophageal Echocardiography ◽  
Blunt Chest Trauma ◽  
Traffic Accidents ◽  
Chest Trauma ◽  
Road Traffic ◽  
Severe Injury ◽  
Road Traffic Accidents ◽  
Associated Injuries ◽  
Air Tamponade ◽  
Trauma Injury

We present three cases of pneumopericardium following blunt chest trauma injury. All three patients were victims of road traffic accidents. All had multiple associated injuries and pneumopericardium was found as the additional finding. Pneumopericardium was treated conservatively with thoracic drains placement and patients observation. Transesophageal echocardiography was used as a method of choice for exclusion of cardiac air tamponade. All three patients survived.

scholarly journals Lived Experience of Transportation Network Company Driver About the Causes of High-risk Driving Behaviors: A Thematic Analysis

2021 ◽  
Vol 6 (3) ◽  
pp. 169-178
Author(s):  
Aref Shayganmehr ◽  
◽  
Fatemeh Hazratian ◽  
Robabeh Emrouzi ◽  
◽  
...  
Keyword(s):  
High Risk ◽  
Cause Of Death ◽  
Internal Control ◽  
Traffic Accidents ◽  
Human Life ◽  
World Health ◽  
External Control ◽  
Driving Behaviors ◽  
Study Results ◽  
Abnormal Behaviors

Background: Nowadays, industrialization, using cars and consequently traffic jams are part of human life which grows every day. Along with the expansion of communication and transportation speed, the number and severity of traffic accidents increases. According to the World Health Organization, traffic accidents are now recognized as the ninth cause of death worldwide. In Iran, traffic accidents after cardiovascular diseases are the second leading cause of death. Materials and Methods: This qualitative study was designed and implemented to determine driver’s views and opinions in two cities of Warsaw, Poland, and Tabriz, Iran, about driver’s high-risk behaviors. This study was conducted using in-depth interviews with 27 drivers. The study results were divided into four main questions about driving behaviors, reasons for driving abnormal behaviors, the prevalence and causes of abnormal behaviors, and suggested measures to correct these behaviors. Results: The study results were divided into six main themes of driving norms, individual factors, social factors, external factors, driving skills, and driving laws. Our findings indicate that drivers are more likely to rely on individual skills in driving in unacceptable conditions. In other words, they ignore the rules and regulations. But, when driving in high standards conditions and good facilities, drivers accept the rules and prioritize them. Conclusion: Internal control should be considered a helpful complement to external control, and that external control provides the highest efficiency when it comes with internal control. To internalize norms and observe driving laws and regulations, the authors suggest removing obstacles such as distrust among drivers regarding the effectiveness of driving laws, unawareness of breaking the laws, lack of job satisfaction, low level of participation, and structural barriers. Also, roads and vehicle safety must be improved along with a better track of the drivers’ behavior.

scholarly journals Spatial distribution of spruce trees in the nature reserve 'Jankove bare' on mt. Kopaonik

2009 ◽  
pp. 191-204
Author(s):  
Branko Stajic ◽  
Milivoj Vuckovic ◽  
Marko Smiljanic
Keyword(s):  
Spatial Distribution ◽  
Tree Growth ◽  
Environmental Conditions ◽  
National Park ◽  
Nature Reserve ◽  
Distance Methods ◽  
Study Results

The methodology and applicability of the study of spatial distribution of trees in Serbian forestry have been insufficiently reported and presented. This paper, based on mathematical?statistical principles, analyses the method of spatial distribution of spruce trees in the Nature Reserve 'Jankove Bare' in the National Park 'Kopaonik'. The following methods in the group of distance methods were applied: Kotar's method (1993), T2?method, and the index of distance dispersion (Johnson, Zimmer, 1985). The study results in a pure uneven-aged spruce stand based on all three methods showed that spruce trees are randomly distributed over the stand area. Therefore, environmental conditions in the study stand can be regarded as homogeneous and equally suitable for tree growth, and there are no significant interactions between the trees, which could cause a higher competition between the trees for nutrients, water, etc.

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