scholarly journals Human stampedes at mass gatherings: An overview

2020 ◽  
Vol 5 ◽  
pp. A83
Author(s):  
Lakshmi Devi Vanumu ◽  
Kumar Laxmikant ◽  
K.Ramachandra Rao
Keyword(s):  
Large Scale ◽  
Initial Step ◽  
Crowd Management ◽  
Mass Gatherings ◽  
Triggering Factors ◽  
Narrow Passage ◽  
Event Location ◽  
Triggering Factor ◽  
Factor Type ◽  
Past Experiences

The main aim of this study is to present an overview of human stampedes and to identify the major triggering factors with respect to the type of events leading to number of fatalities and injuries. Considering major crowd incidents, the stampedes were categorized based on location, triggering factor, type of event and year of occurrence. This paper lists a total of 137 stampedes occurred all over the world between the years 1883 and 2017. The details include the name and type of event, location of the event, number of injuries and fatalities, probable reason for the stampede and type of reliable source. Stampedes are classified based on type of events as religious, sports, entertainment, festival, political and others. Among all types of events, religious gatherings cause 64% of total fatalities and 51% injuries. The triggering factors are identified as rumours, fire, structural failure, narrow passage, overcrowding and others. Out of all the triggering factors mentioned above, narrow passage causes about 27% fatalities followed by overcrowding and rumours with 23 and 21% respectively. The majority of injuries caused by overcrowding turn out to be 35%. It is also observed that the frequency of stampede occurrences increasing since 1980. This study can be considered as an initial step in giving an overview of human stampedes, which would help to prepare a framework based on the past experiences. Further, it can give better insights for large-scale crowd management and to minimize the loss of human lives in future.

COVID-19 personal protective behaviors during mass events: Lessons from observational measures in Wales, UK.

2021 ◽  
Author(s):  
Ashley Gould ◽  
Lesley Lewis ◽  
Lowri Evans ◽  
Leanne Greening ◽  
Holly Howe-Davies ◽  
...  
Keyword(s):  
Large Scale ◽  
Protective Behaviors ◽  
Mass Gatherings ◽  
Observational Measures ◽  
Behavioral Observations ◽  
The Government ◽  
Additional Support ◽  
The Uk ◽  
Trained Observers ◽  
Personal Protective Behaviors

Within the context of reopening society in the summer of 2021, as the UK moved away from ’lockdown,’ the Government of Wales piloted the return on organised ‘mass gatherings’ of people at a number of test events. Behavioral observations were made at two of the test events to support this process. The research was particularly interested in four key factors: How (1) context within a venue, (2) environmental design, (3) staffing and social norms, and (4) time across an event, affected personal protective behaviors of social distancing, face covering use, and hand hygiene. Data collection was undertaken by trained observers across the above factors. Findings suggest that adherence of attendees was generally high, but with clear indications that levels were shaped in a systematic way by the environment, situational cues, and the passage of time during the events. Some instances of large-scale non-adherence to personal protective behaviors were documented. Overall, there were three main situations where behavioral adherence broke down, under conditions where: (1) staff were not present; (2) there was a lack of environmental signalling (including physical interventions or communications); and (3) later into the events when circumstances were less constrained and individuals appeared less cognitively vigilant. Behavioral observations at events can add precision and identify critical risk situations where/when extra effort is required. The findings suggest a liberal paternal approach whereby state authorities, health authorities and other key organisations can help nudge individuals towards COVID-safe behaviors. Finally, an individual’s intentions are not always matched by their actions, and so behavioral insights can help identify situations and contexts where people are most likely to require additional support to ensure COVID-19 personal protective behaviors are followed and hence protecting themselves and others.

scholarly journals ECE laboratory in the Vinca institute: Its basic characteristics and fundamentals of electrochemic etching on polycarbonate

2003 ◽  
Vol 18 (2) ◽  
pp. 57-60 ◽  
Author(s):  
Zora Zunic ◽  
Predrag Ujic ◽  
Igor Celikovic ◽  
Kenzo Fujimoto
Keyword(s):  
Large Scale ◽  
Electrochemical Etching ◽  
Initial Step ◽  
Field Application ◽  
Alpha Particles ◽  
Experimental Phase ◽  
Laboratory Equipment ◽  
Etch Pit ◽  
Large Scale Survey ◽  
Basic Characteristics

This paper deals with the introductory aspects of the Electrochemical Etching Laboratory installed at the VINCA Institute in the year 2003. The main purpose of the laboratory is its field application for radon and thoron large-scale survey using passive radon/thoron UFO type detectors. Since the etching techniques together with the laboratory equipment were transferred from the National Institute of Radiological Sciences, Chiba, Japan, it was necessary for both etching conditions to be confirmed and to be checked up^ i. e., bulk etching speeds of chemical etching and electrochemical etching in the VINCA Electrochemical Etching Laboratory itself. Beside this initial step, other concerns were taken into consideration in this preliminary experimental phase such as the following: the measurable energy range of the polycarbonate film, background etch pit density of the film and its standard deviation and reproducibility of the response to alpha particles for different sets of etchings.

scholarly journals Crowd Event Perception Based on Spatiotemporal Weber Field

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Zhou Su ◽  
Hua Wei ◽  
Sha Wei
Keyword(s):  
Large Scale ◽  
Latent Dirichlet Allocation ◽  
Interaction Force ◽  
Motion Modeling ◽  
Allocation Model ◽  
Motion Patterns ◽  
Crowd Management ◽  
Latent Dirichlet Allocation Model ◽  
Spatiotemporal Signal ◽  
Crowd Motion

Over the past decade, a wide attention has been paid to the crowd control and management in intelligent video surveillance area. Among the tasks of automatic video-based crowd management, crowd motion modeling is recognized as one of the most critical components, since it lays a crucial foundation for numerous subsequent analyses. However, it still encounters many unsolved challenges due to occlusions among pedestrians, complicated motion patterns in crowded scenarios, and so forth. Addressing these issues, we propose a novel spatiotemporal Weber field, which integrates both appearance characteristics and stimulus of crowd motion patterns, to recognize the large-scale crowd event. On the one hand, crowd motion is recognized as variations of spatiotemporal signal, and we then measure the variation based on Weber law. The result is referred to as spatiotemporal Weber variation feature. On the other hand, motivated by the achievements in crowd dynamics that crowd motion has a close relationship with interaction force, we propose a spatiotemporal Weber force feature to exploit the stimulus of crowd behaviors. Finally, we utilize the latent Dirichlet allocation model to establish the relationship between crowd events and crowd motion patterns. Experiments on PETS2009 and UMN databases demonstrate that our proposed method outperforms the previous methods for the large-scale crowd behavior perception.

Impact of Mechanical Chevrons on Supersonic Jet Flow and Noise

2009 ◽  
Author(s):  
K. Kailasanath ◽  
Junhui Liu ◽  
Ephraim Gutmark ◽  
David Munday ◽  
Steven Martens
Keyword(s):  
Flow Field ◽  
Large Scale ◽  
Near Field ◽  
Supersonic Jet ◽  
Initial Step ◽  
Nozzle Geometry ◽  
Jet Flows ◽  
Flow Conditions ◽  
Nozzle Geometries ◽  
The Impact

In this paper, we present observations on the impact of mechanical chevrons on modifying the flow field and noise emanated by supersonic jet flows. These observations are derived from both a monotonically integrated large-eddy simulation (MILES) approach to simulate the near fields of supersonic jet flows and laboratory experiments. The nozzle geometries used in this research are representative of practical engine nozzles. A finite-element flow solver using unstructured grids allows us to model the nozzle geometry accurately and the MILES approach directly computes the large-scale turbulent flow structures. The emphasis of the work is on “off-design” or non-ideally expanded flow conditions. LES for several total pressure ratios under non-ideally expanded flow conditions were simulated and compared to experimental data. The agreement between the predictions and the measurements on the flow field and near-field acoustics is good. After this initial step on validating the computational methodology, the impact of mechanical chevrons on modifying the flow field and hence the near-field acoustics is being investigated. This paper presents the results to date and further details will be presented at the meeting.

scholarly journals Evaluation of Moisture Level Using Precipitation Indices as a Landslide Triggering Factor—A Study of Coonoor Hill Station

Climate ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 111 ◽  
Author(s):  
C. R. Suribabu ◽  
Evangelin Ramani Sujatha
Keyword(s):  
Heavy Rainfall ◽  
Large Scale ◽  
Standardized Precipitation Index ◽  
Moisture Level ◽  
Antecedent Moisture ◽  
Hill Station ◽  
Hilly Region ◽  
Triggering Factor ◽  
Heavy Rainfall Events

Extreme heavy rainfall events in the hilly region pose a great threat to public safety and causes dangerous landslides in the region. Several factors contribute to a landslide and, hence, it is essential to analyze the causes of such related incidents in all possible ways. Though rainfall is the major triggering factor for most of the landslides in the Western Ghats, the long period antecedent moisture level prevailing in the soil of a hilly terrain cannot be ignored. Few of the drought assessing and monitoring indices available in literature can be adopted to predict the degree of wetness from long-term precipitation data of the region. In the present work, three moisture level assessment indices, namely, standardized precipitation index (SPI), China Z-index (CZI), and statistical Z-Score (SZS) index are used to categorize the antecedent moisture level of Coonoor station. Monthly rainfall data for a period of 81 years is used for the study. It is evident from the study that higher level of moisture followed by heavy rainfall triggers medium- to large-scale landslides. Further, from the study it is inferred that an early warning for a landslide can be given once cumulative rainfall exceeds 300 mm during continuous storm periods.

scholarly journals Medical Care at Mass Gatherings: Emergency Medical Services at Large-Scale Rave Events

2012 ◽  
Vol 27 (1) ◽  
pp. 71-74 ◽  
Author(s):  
Jan Krul ◽  
Björn Sanou ◽  
Eleonara L Swart ◽  
Armand R J Girbes
Keyword(s):  
Medical Care ◽  
Large Scale ◽  
Life Support ◽  
Advanced Life Support ◽  
Field Research ◽  
Severity Index ◽  
First Aid ◽  
Disaster Medicine ◽  
Medical Problems ◽  
Mass Gatherings

AbstractObjective: The objective of this study was to develop comprehensive guidelines for medical care during mass gatherings based on the experience of providing medical support during rave parties.Methods: Study design was a prospective, observational study of self-referred patients who reported to First Aid Stations (FASs) during Dutch rave parties. All users of medical care were registered on an existing standard questionnaire. Health problems were categorized as medical, trauma, psychological, or miscellaneous. Severity was assessed based on the Emergency Severity Index. Qualified nurses, paramedics, and doctors conducted the study after training in the use of the study questionnaire. Total number of visitors was reported by type of event.Results: During the 2006–2010 study period, 7,089 persons presented to FASs for medical aid during rave parties. Most of the problems (91.1%) were categorized as medical or trauma, and classified as mild. The most common medical complaints were general unwell-being, nausea, dizziness, and vomiting. Contusions, strains and sprains, wounds, lacerations, and blisters were the most common traumas. A small portion (2.4%) of the emergency aid was classified as moderate (professional medical care required), including two cases (0.03%) that were considered life-threatening. Hospital admission occurred in 2.2% of the patients. Fewer than half of all patients presenting for aid were transported by ambulance. More than a quarter of all cases (27.4%) were related to recreational drugs.Conclusions: During a five-year field research period at rave dance parties, most presentations on-site for medical evaluation were for mild conditions. A medical team of six healthcare workers for every 10,000 rave party visitors is recommended. On-site medical staff should consist primarily of first aid providers, along with nurses who have event-specific training on advanced life support, event-specific injuries and incidents, health education related to self-care deficits, interventions for psychological distress, infection control, and disaster medicine. Protocols should be available for treating common injuries and other minor medical problems, and for registration, triage, environmental surveillance and catastrophe management and response.

scholarly journals (P2-39) Public Health Safety for Traditional Mass Gatherings in India: A 10-Year Analysis

2011 ◽  
Vol 26 (S1) ◽  
pp. s148-s148 ◽  
Author(s):  
S. Sanyal ◽  
A. Madan
Keyword(s):  
Violent Behavior ◽  
Healthcare Services ◽  
Mass Casualty ◽  
Sporting Events ◽  
Mass Gathering ◽  
Health Safety ◽  
Crowd Management ◽  
Mass Gatherings ◽  
Indian Context ◽  
The Times

IntroductionIn the past decade, India has witnessed many lapses in crowd safety during mass gatherings. The high casualty rate in stampedes during traditional mass gatherings has prompted the study of these events. Wide variations exist in casualty rates for similar events, and key issues in healthcare services in these special situations were addressed in the Indian context.MethodsFrom 2001–2010, Mass gathering data were collected from news items reported in the archives of newspapers, “The Times of India”, “The Hindu” and “The Indian Express”. The keywords used were: “stampede”, “mass gathering”, “mass-gathering events”, “mass-gathering incidents”, “crowd”, and “crowd management”. The study included triggers for the incident and the number of casualties (dead and injured) in each incident.ResultsIn 27 separate mass gatherings in India, there were 936 dead and 540 injured casualties. The unique characteristics of mass gatherings in India included a predominance of old and vulnerable people in traditional mass gatherings, in contrast to the young and middle-aged groups who gather for music and sporting events elsewhere. Further, alcohol/substance abuse, brawls, and violent behavior were absent at traditional Indian mass gatherings. Non-traditional mass gatherings accounted for a lesser number of incidents in India, and were located in movie theatres and railway stations.ConclusionsIn a populous country like India, traditional mass gatherings predominate, and ensuring the health, safety, and security of the public at such events will require an understanding of crowd behavior, critical crowd densities, and crowd capacities in the Indian context. However, planning for mass gatherings can be developed using the existing body of knowledge of mass-casualty preparedness, food safety, and health promotion.

Overview of Pharmacologic Treatment of Obesity: Past Experiences, Present Options, and Future Directions

2005 ◽  
Vol 21 (6) ◽  
pp. 319-324
Author(s):  
T Kristopher Harrell ◽  
Leigh Ann Ross ◽  
Deborah S King
Keyword(s):  
Adverse Effects ◽  
Large Scale ◽  
English Language ◽  
Data Extraction ◽  
Treatment Options ◽  
Pharmacologic Treatment ◽  
Related Factors ◽  
Treatment Of Obesity ◽  
Past Experiences ◽  
Pharmacologic Agents

Objective: To review the literature regarding the past, present, and future pharmacologic agents used in the treatment of obesity. Data Sources: Articles were identified by searching MEDLINE (1966–April 2005) and International Pharmaceutical Abstracts (1970–April 2005) using the key words obesity, antiobesity agents, sibutramine, orlistat, phentermine, and leptin. Additional resources were identified by examining the references of the articles cited. Searches were limited by human subject and English language, but were not limited by time of publication. Study Selection and Data Extraction: Large-scale clinical studies of pharmacologic agents used to treat obesity were selected for this review including agents that were previously available, currently available, and those currently undergoing clinical trials. Data Synthesis: Thyroid hormone was the first antiobesity agent used. Several other agents have been withdrawn from the market due to adverse effects. Current therapies indicated for obesity management include orlistat, sibutramine, and noradrenergic agents. Future therapies include both newer agents and existing agents that are principally used for other indications, mainly diabetes, depression, and seizure disorders. Conclusions: Obesity is a major epidemic in the US, affecting over half of the population. Past experiences with the pharmacologic treatment of obesity have been disappointing and, in some cases, harmful to patients. Current options are available that include noradrenergic agents, orlistat, and sibutramine. However, these agents still have only demonstrated limited efficacy for short-term use plus some undesirable adverse effects. Newer treatment options are being evaluated as new pathways are being identified and other related factors are being discovered.

scholarly journals Examining the Mediating Role of Innovativeness on the Relationship between Innovation Strategy, Atmosphere, Culture and Performance of Hotel Industry in Thailand: A Pilot Study

2020 ◽  
Vol 2 (2) ◽  
pp. 29-39
Author(s):  
Thienchai Phankhong ◽  
Lily Julienti Abu Bakar ◽  
Donny Abdul Latief Poespowidjojo
Keyword(s):  
Pilot Study ◽  
Large Scale ◽  
Initial Step ◽  
Innovation Strategy ◽  
Validity And Reliability ◽  
Good Reliability ◽  
Mediating Role ◽  
Hotel Performance ◽  
And Performance

Pilot study is an essential initial step of a survey. The paper aims to explore the validity and reliability of the instrument in the pilot study stage before implementing large scale study of the mediating role of innovativeness between innovation strategy, organizational atmosphere, organizational culture and hotel performance in Thailand. The data were collected from 60 three to five stars hotel in Thailand. In this study using PLS-SEM 3.2.8 software for data analysis. The main results of the study found that content validity greater than 0.90, the cronbach’s alpha coefficient value of all the five constructs ranged from 0.747 to 0.928. Furthermore, the results of the composite reliability were above 0.70 which is acceptable confirmed that the instruments have a good reliability. Additionally, the results confirmed that the instruments were fit to be used for the actual study.

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