scholarly journals Improving the method of conflict situations

2014 ◽  
Vol 9 (4) ◽  
pp. 317-324 ◽  
Author(s):  
Denis Kapski ◽  
Lina Bertulienė
Keyword(s):  
Road Safety ◽  
Rapid Assessment ◽  
Signalized Intersections ◽  
Annual Number ◽  
Safety Measures ◽  
Accident Prediction ◽  
Conflict Situations ◽  
Traffic Conflict ◽  
Speed Humps

The paper presents the results of research to develop methodology for a rapid assessment of the effect of measures used to improve road safety. The research includes the improvement of the method of determining traffic conflict situations and the development of accident prediction in conflict situations. A method of conflict situations is one of the most advanced and effective methods for predicting accidents at conflict sites since this method is based on the dependency of the number of accidents on the number of conflict situations. Having determined at the study site the number of conflict situations it is possible to calculate a predictable annual number of accidents at that site. The research implemented gave a possibility to increase the accuracy of accident prediction according to the method of conflict situations making it suitable to be used in practice for assessing the quality of road safety measures at the conflict sites – signalized intersections and pedestrian crossings, in the zone of which the artificial speed humps have been installed, such as a “sleeping policeman”.

scholarly journals Studies on the impact of the technical characteristics of local roads on road safety

2019 ◽  
Vol 262 ◽  
pp. 05006
Author(s):  
Stanisław Gaca ◽  
Mariusz Kieć
Keyword(s):  
Road Safety ◽  
Road Traffic ◽  
Road Accidents ◽  
Safety Measures ◽  
Accident Prediction ◽  
The Road ◽  
Access Road ◽  
Local Roads ◽  
On The Road ◽  
The Impact

Local roads (district roads) constitute an important part of the road network in Poland, making up around 29.7 % (124,945 km) of all public roads. In 2017, 10,578 accidents, which is 35.7% of all accidents in Poland, took place on local roads. These roads are used primarily by regular users who are very familiar with the defects of these roads. This means that the effects of the low technical standard of local roads and the insufficient number of road traffic devices on the safety on the road can be partly compensated for by the fact that drivers adjust their behaviour to the conditions on the road. This hypothesis can be verified through developing dependency models of road safety measures of local roads’ and technical characteristics. The article presents the research carried out based on regression models of accident prediction. The models were developed with the use of the data on the road surroundings arrangement (built-up areas, access), road condition and the extent of signposting, including data on speed limits and overtaking as well as risk exposure variables. Due to the incomplete data on accidents and the small number of accidents, different approaches to the modelling of the number of road accidents were applied.

scholarly journals Safety assessment of pedestrian crossing solutions

2014 ◽  
Vol 13 (4) ◽  
pp. 177-184 ◽  
Author(s):  
Piotr Olszewski ◽  
Witold Czajewski ◽  
Paweł Dąbkowski ◽  
Piotr Szagała
Keyword(s):  
Image Analysis ◽  
Video Analysis ◽  
Safety Assessment ◽  
Positive Impact ◽  
Vehicle Speed ◽  
Safety Measures ◽  
Conflict Situations ◽  
Before And After ◽  
Pedestrian Crossing ◽  
Speed Humps

Paper presents preliminary findings from the research project Mobis which is aimed at developing a method of assessing safety of pedestrian road crossings by using video image analysis. Pedestrian and vehicle traffic has been recorded at a selected crossing site in Warsaw for 2 months, before and after installation of safety measures which included active signage and speed humps. Speeds of approaching vehicles were measured and vehicle-pedestrian conflict situations identified by using video analysis. Results indicate that both SignFlash active signage and speed humps reduce mean vehicle speed and have a positive impact on drivers’ behaviour.

Principles for construction of bioluminescent enzyme biotests for analysis of complex media

2019 ◽  
Vol 485 (2) ◽  
pp. 229-233
Author(s):  
V. P. Kalyabina ◽  
E. N. Esimbekova ◽  
I. G. Torgashina ◽  
K. V. Kopylova ◽  
V. A. Kratasyuk
Keyword(s):  
Fruits And Vegetables ◽  
Rapid Assessment ◽  
Test System ◽  
Maximum Sensitivity ◽  
Toxic Chemicals ◽  
Complex Media ◽  
Luminescent Bacterium ◽  
Chemical Safety ◽  
Minimal Impact

We formulated the principles of designing bioluminescent enzyme tests for assessing the quality of complex media which consist in providing the maximum sensitivity to potentially toxic chemicals at a minimal impact of uncontaminated complex media. The developed principles served as a basis for designing a new bioluminescent method for an integrated rapid assessment of chemical safety of fruits and vegetables which is based on using the luminescent bacterium enzymes (NAD(P)H:FMN oxidoreductase and luciferase) as a test system.

scholarly journals Population-based rapid assessment of avoidable blindness survey in Sohag governorate in Egypt

BMJ Open ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. e036337
Author(s):  
Heba AlSawahli ◽  
Ian McCormick ◽  
Caleb D Mpyet ◽  
Gamal Ezzelarab ◽  
Mohammad Shalaby
Keyword(s):  
Cataract Surgery ◽  
Census Data ◽  
Rapid Assessment ◽  
Population Based ◽  
Vision Impairment ◽  
Health System Strengthening ◽  
Secondary Outcome ◽  
Institutional Setting ◽  
Financial Barriers

ObjectivesTo determine the prevalence and causes of blindness and vision impairment, and the coverage and quality of cataract surgical services, among population aged 50 years and older in Sohag governorate in Egypt.DesignA population-based cross-sectional survey using two-stage cluster random sampling following the rapid assessment of avoidable blindness methodology.SettingA community-based survey conducted by six teams of ophthalmologists, assistants and local guides. Enrolment and examination were door-to-door in selected clusters.ParticipantsUsing 2016 census data, 68 population units were randomly selected as clusters (of 60 people) with probability proportionate to population size. Anyone aged 50 years and older, residing in a non-institutional setting in a cluster for at least 6 months, was eligible to participate.Primary and secondary outcome measuresThe prevalence and causes of blindness and vision impairment. Secondary outcomes were CSC and effectiveness and participant-reported barriers to cataract surgery.ResultsOf 4078 participants enrolled, 4033 (98.9%) were examined. The age-adjusted and sex-adjusted prevalence of blindness, severe vision impairment and moderate vision impairment were 5.9% (95% CI 4.8% to 6.9%), 4.7% (95% CI 3.8% to 5.7%) and 18.9% (95% CI 16.8% to 21.0%), respectively. Cataract caused most of blindness (41.6%), followed by non-trachomatous corneal opacity (15.7%) and posterior segment diseases (14.5%). Cataract surgical coverage (CSC) for persons for visual acuity <3/60 was 86.8%, the proportion of cataract surgeries with poor visual outcome was 29.5% and effective CSC (eCSC) was 44.9%. eCSC was lower in women than men. The most frequently reported barrier to surgery was cost (51.5%).ConclusionsThe prevalence of blindness in Sohag governorate is higher than districts in other middle-income countries in the region. CSC was high; however, women suffer worse quality-corrected CSC than men. The quality of cataract surgery needs to be addressed, while health system strengthening across government and private settings could alleviate financial barriers.

scholarly journals Driver Liability Assessment in Vehicle Collisions in Spain

2021 ◽  
Vol 18 (4) ◽  
pp. 1475
Author(s):  
Almudena Sanjurjo-de-No ◽  
Blanca Arenas-Ramírez ◽  
José Mira ◽  
Francisco Aparicio-Izquierdo
Keyword(s):  
Road Safety ◽  
Accurate Estimation ◽  
Main Hypothesis ◽  
Self Organizing Maps ◽  
Safety Measures ◽  
Vehicle Collisions ◽  
Promising Tool ◽  
Visual Clustering ◽  
Open Question ◽  
The Impact

An accurate estimation of exposure is essential for road collision rate estimation, which is key when evaluating the impact of road safety measures. The quasi-induced exposure method was developed to estimate relative exposure for different driver groups based on its main hypothesis: the not-at-fault drivers involved in two-vehicle collisions are taken as a random sample of driver populations. Liability assignment is thus crucial in this method to identify not-at-fault drivers, but often no liability labels are given in collision records, so unsupervised analysis tools are required. To date, most researchers consider only driver and speed offences in liability assignment, but an open question is if more information could be added. To this end, in this paper, the visual clustering technique of self-organizing maps (SOM) has been applied to better understand the multivariate structure in the data, to find out the most important variables for driver liability, analyzing their influence, and to identify relevant liability patterns. The results show that alcohol/drug use could be influential on liability and further analysis is required for disability and sudden illness. More information has been used, given that a larger proportion of the data was considered. SOM thus appears as a promising tool for liability assessment.

scholarly journals Online Assessment of Cognitive Functioning: A Reliable Alternative to Laboratory Testing?

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 576-577
Author(s):  
Maximilian Haas ◽  
Sascha Zuber ◽  
David Framorando ◽  
Elissa El Khawli ◽  
Susanne Scheibe ◽  
...  
Keyword(s):  
Cognitive Functioning ◽  
Cognitive Abilities ◽  
Rapid Assessment ◽  
Cognitive Disorders ◽  
Assessment Tools ◽  
Adult Lifespan ◽  
Face To Face ◽  
Age Related ◽  
Online Tools

Abstract As the population ages, risks for cognitive decline threaten independence and quality of life for older adults. Classically, psychological assessment tools to evaluate cognitive functioning are administered in face-to-face laboratory sessions, which is time- and resource-consuming. With the aim of reducing such costs, the present study set out to develop and validate two new online tools, allowing a rapid assessment of general cognitive abilities and of prospective memory. We collected data from 250 participants equally spread across the adult lifespan (aged 18 – 86). Results suggest that performance assessed via these newly developed online tools is comparable to performance in face-to-face laboratory settings. Our findings thereby indicate that these online tools can reliably measure cognitive functioning across the lifespan at a reduced cost, which may help detect individuals at risk of developing age-related cognitive disorders.

scholarly journals National control laboratory independent lot testing of COVID-19 vaccines: the UK experience

npj Vaccines ◽  
2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Nicola J. Rose ◽  
Paul Stickings ◽  
Silke Schepelmann ◽  
Marc J. A. Bailey ◽  
Chris Burns
Keyword(s):  
Clinical Trials ◽  
Vaccine Development ◽  
Regulatory Approval ◽  
Safety Measures ◽  
Discovery Research ◽  
Innovative Products ◽  
The Uk ◽  
Vaccine Availability ◽  
And Control

AbstractThe past 18 months have seen an unprecedented approach to vaccine development in the global effort against the COVID-19 pandemic. The process from discovery research, through clinical trials and regulatory approval often takes more than 10 years. However, the critical need to expedite vaccine availability in the pandemic has meant that new approaches to development, manufacturing, and regulation have been required: this has necessitated many stages of product development, clinical trials, and manufacturing to be undertaken in parallel at a global level. Through the development of these innovative products, the world has the best chance of finding individual, or combinations of, vaccines that will provide adequate protection for the world’s population. Despite the huge scientific and regulatory achievements and significant investment to accelerate vaccine availability, it is essential that safety measures are not compromised. Here we focus on the post regulatory approval testing by independent laboratories that provides an additional assurance of the safety and quality of a product, with an emphasis on the UK experience through the National Institute for Biological Standards and Control (NIBSC), an expert centre of the UK’s Medicines and Healthcare products Regulatory Agency (MHRA).

Methods for Evaluating Road Safety Measures

1982 ◽  
Vol 14 (6) ◽  
pp. 487-488
Author(s):  
John B. Toomath
Keyword(s):  
Road Safety ◽  
Safety Measures

Analysis of Pedestrian Conflicts with Left-Turning Traffic

1996 ◽  
Vol 1538 (1) ◽  
pp. 61-67 ◽  
Author(s):  
Dominique Lord
Keyword(s):  
Data Collection ◽  
Statistical Tests ◽  
Computer Programs ◽  
Signalized Intersections ◽  
Laptop Computer ◽  
Expected Number ◽  
Positive Correlation ◽  
Data Collection Process ◽  
Traffic Conflicts ◽  
Traffic Conflict

The interaction between pedestrians and left-turning vehicles at signalized intersections are examined using the traffic conflict technique. Paramount was a comparison of the safety of left turns at two types intersections: T-intersections and X-intersections (cross-intersections). Previous research has indicated that T-intersections are more dangerous to pedestrians. In preparation for the comparison several traffic conflict definitions and their applications to pedestrians were evaluated. Use of a laptop computer for data collection was tested. Eight sites taken from intersections in Hamilton, Ontario, Canada, were selected. A conflict recording methodology was developed for T-intersections and X-intersections that consisted of recording data at various times along the paths of pedestrians and left-turning vehicles, and recording traffic conflicts. Two computer programs were written for the data collection process: one for vehicles and one for pedestrians. Several statistical tests to relate traffic conflicts and the expected number of accidents were performed. These tests indicate that a positive correlation between traffic conflicts and expected number of accidents exists; they also suggest that T-intersections have a higher traffic conflict rate than X-intersections.

scholarly journals The Current Situation and Prospect Of Study Quality Evaluation Research in China in The Last 10 Years

2020 ◽  
Vol 2 (1) ◽  
pp. 101-112
Author(s):  
Wu Aixia ◽  
Zhou Ying ◽  
Tommy Tanu Wijaya
Keyword(s):  
Quality Evaluation ◽  
Evaluation Research ◽  
Teaching Quality ◽  
Current Situation ◽  
Annual Number ◽  
Future Research ◽  
Existing Problems ◽  
Content Analysis Method ◽  
Future Research Directions

With the deepening of China's educational reform, the evaluation of teaching quality has become an important aspect of teaching reform.And the evaluation of students'learning quality is an important part of teaching evaluation. Research on it will help to improve the teaching quality of our country and promote the overall improvement of students' morality, intelligence, physical fitness and beauty.Therefore, this study takes 108 literatures related to the study of learning quality evaluation in China as the research object, uses content analysis method, carries out statistical analysis on the annual number of literatures, Journal distribution, author status, paper influence, research content, etc., analyzes the current situation and existing problems of the study of learning quality evaluation in China, and puts forward the need for further deepening.On the basis of these questions, possible future research directions are proposed.

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