Public Safety Authorities Research Articles

Study of Fungal Organisms Associated with Smoked and Dried Fish Sold in Awka Markets, Anambra State

Fungal contamination of fish is considered as the major cause of spoilage and it constitutes a significant public health problem. This study was carried out to determine the fungal organisms associated with smoked and dried fish samples: Scomber scombrus (Mackerel), Sardinella longiceps (Sardine), Oreochromis niloticus (Tilapia), Clarias gariepinus (catfish), Gadus morhua (Stock fish), Ethmalosa fimbriata (Bonga fish), and Citharinus citharus (Mangala) sold in Awka markets, Anambra State, Nigeria. A total of fifty (50) (25 smoked and 25 dried) fishes were obtained from three markets in Awka and examined microbiologically for viable fungal infestation using Potato Dextrose Agar (PDA) media. A total of 121 fungal organisms were isolated from 25 smoked and 25 dried fish samples and identified. The isolated fungi were Mucor spp, Aspergillus niger, Aspergillus flavus, Penicillium spp, Fusarium spp and Rhizopus spp. It was observed that all the fish samples harboured multiple fungal organisms. Aspergillus niger was the fungus with the highest mean fungal count of 9.00±5.568, followed by Mucor spp (8.00±1.732), while Aspergillus flavus was the lowest (3.67±1.528). In the dried fish samples, Gardus morhua (stock fish) had the highest infestation with fungi (1.08±1.083), while in smoked fish, Clarias gariepinus (catfish) had the highest infestation. The high level of fungal contamination can be attributed to poor handling of fish and the environment. Considering the danger to public health, food and safety authorities should intensify their monitoring efforts towards controlling fish contamination, and fish sellers should also be sensitized on hygienic fish handling techniques.

Machine Learning and Imputation to Characterize Human Norovirus Genotype Susceptibility to Sodium Hypochlorite

Human norovirus (HuNoV) is the leading cause of foodborne illness in the developed world and a major contributor to gastroenteritis globally. Its low infectious dose and environmental persistence necessitate effective disinfection protocols. Sodium hypochlorite (NaOCl) bleach is a widely used disinfectant for controlling HuNoV transmission via contaminated fomites. This study aimed to evaluate the susceptibility of HuNoV genotypes (n = 11) from genogroups I, II, and IV to NaOCl in suspension. HuNoV was incubated for 1 and 5 min in diethyl pyrocarbonate (DEPC) treated water containing 50 ppm, 100 ppm, or 150 ppm NaOCl, buffered to maintain a pH between 7.0 and 7.5. Neutralization was achieved by a tenfold dilution into 100% fetal bovine serum. RNase pre-treatment followed by RT-qPCR was used to distinguish between infectious and non-infectious HuNoV. Statistical methods, including imputation, machine learning, and generalized linear models, were applied to process and analyze the data. Results showed that NaOCl reduced viral loads across all genotypes, though efficacy varied. Genotypes GI.1, GII.4 New Orleans, and GII.4 Sydney were the least susceptible, while GII.6 and GII.13 were the most susceptible. All NaOCl concentrations above 0 ppm were statistically indistinguishable, and exposure duration did not significantly affect HuNoV reduction, suggesting rapid inactivation at effective concentrations. For instance, some genotypes were completely inactivated within 1 min, rendering extended exposure unnecessary, while other genotypes maintained the initial concentration at both 1 and 5 min, indicating a need for longer contact times. These findings underscore the critical role of HuNoV genotype selection in testing disinfection protocols and optimizing NaOCl concentrations. Understanding HuNoV susceptibility to NaOCl bleach informs better disinfection strategies, aiding public health and food safety authorities in reducing HuNoV transmission and outbreaks.

Cybersecurity for tactical 6G networks: Threats, architecture, and intelligence

Edge intelligence, network autonomy, broadband satellite connectivity, and other concepts for private 6G networks are enabling new applications for public safety authorities, e.g., for police and rescue personnel. Enriched situational awareness, group communications with high-quality video, large scale IoT, and remote control of vehicles and robots will become available in any location and situation. We analyze cybersecurity in intelligent tactical bubbles, i.e., in autonomous rapidly deployable mobile networks for public safety operations. Machine learning plays major roles in enabling these networks to be rapidly orchestrated for different operations and in securing these networks from emerging threats, but also in enlarging the threat landscape. We explore applicability of different threat and risk analysis methods for mission-critical networked applications. We present the results of a joint risk prioritization study. We survey security solutions and propose a security architecture, which is founded on the current standardization activities for terrestrial and non-terrestrial 6G and leverages the concepts of machine learning-based security to protect mission-critical assets at the edge of the network.

Knowledge, perceptions, and practices regarding cooking and storage of olive oil: A consumer survey in Lebanon

BackgroundOlive oil consumption and production are evident among Lebanese households, yet little is known about the knowledge, perceptions, and practices of Lebanese consumers of olive oil. MethodsA total of 610 adolescents and adults who consume olive oil were surveyed using a semi-qualitative questionnaire comprising 47 questions between August 2022 and May 2023. Descriptive analyses of knowledge, perceptions, and practices were conducted in addition to a regression analysis of the predictors of higher knowledge. Results610 participants were included (61.0 % aged <25 years, and 71.5 % females; 53.8 % olive oil producers). Mainly, participants bought their olive oil once (37.0 %) and in bulk (52.8 %), utilized olive oil daily (55.1 %), and used approximately 2 teaspoons per day (27.4 %). In addition, 29.5 % of the participants’ households consumed more than 30 L per year. Most participants described olive oil as ‘fresh’ (66.1 %), expressed a strong preference for domestic olive oil over imported varieties (66.1 %), believed that olive oil is good for consumption without cooking, other oils/fats are better to cook (53.4 %), and 53.1 % favored olive oil based on its color. Regarding storage, 76 % stored olive oil in a closed cabinet, and 36.6 % used tinplate containers. Half the participants were not concerned about the oil being adulterated (50.2 %); 73.4 % trusted olive mills, and 33.1 % had no trust at all in public food safety authorities concerning olive oil and table olives. Finally, 37.2 % considered that the price of olive oil was high relative to other fats and oils. The mean knowledge score ± standard deviation (SD) was 7.33 ± 2.71 over 10. Higher age than 25 years, male gender, living in the South or Bekaa, being married, having a higher reported BMI, obtaining olive oil from self/family/known sources and olive oil mills, purchasing in bulk, and storing in opaque glass containers colored green, or brown were positively associated with knowledge of olive oil. ConclusionOur study reveals high consumption of olive oil but poor related knowledge and practices among consumers. Consumer education programs on olive oil and relevant practices are warranted, especially for young, female, people living in Beirut, single, and lean individuals. Addressing consumer concerns regarding adulteration and strengthening trust in public food safety authorities are needed.

Whole-genome sequencing for One Health surveillance of antimicrobial resistance in conflict zones: a case study of Salmonella spp. and Campylobacter spp. in the West Bank, Palestine.

Antimicrobial resistance (AMR) is a critical global concern driven by the overuse, misuse, and/or usage of inadequate antibiotics on humans, animals' agriculture, and as a result of contaminated environments. This study is the first One Health survey in the Middle East that incorporated whole-genome sequencing (WGS) to examine the spread of AMR in Campylobacter spp. and Salmonella spp. This cross-sectional study was conducted to examine the role of AMR at the human-animal-environmental interface and was performed in Ramallah/Al-Bireh and Jerusalem governorates of the central West Bank, Palestine. In 2021 and 2022, a total of 592 samples were collected and analyzed. From a total of 65 Campylobacter jejuni and 19 Salmonella spp. isolates, DNA was extracted for WGS using Oxford Nanopore Technologies MinION platform. We found that the dominant serotypes of C. jejuni and Salmonella enterica were present in chicken manure, chicken meat sold in markets, and feces of asymptomatic farm workers, with high genetic similarities between the isolates regardless of origin. Additionally, our results showed rapid strain turnover in C. jejuni from the same sites between 2021 and 2022. Most of the positive Salmonella spp. samples were multidrug-resistant (MDR) S. enterica serovar Muenchen carrying the plasmid of emerging S. infantis (pESI) megaplasmid, conferring resistance to multiple antibiotics. Our findings highlight the spread of MDR foodborne pathogens from animals to humans through the food chain, emphasizing the importance of a One Health approach that considers the interconnections between human, animal, and environmental health. IMPORTANCE Prior to this study, there existed hardly an integrated human-animal-environmental study of Salmonellosis and Campylobacteriosis and related AMR in Middle Eastern countries. The few existing studies lack robust epidemiological study designs, adequate for a One Health approach, and did not use WGS to determine the circulating serotypes and their AMR profiles. Civil unrest and war in Middle Eastern countries drive AMR because of the breakdown of public health and food security services. This study samples simultaneously humans, animals, and the environment to comprehensively investigate foodborne pathogens in the broiler chicken production chain in Palestine using WGS. We show that identical serotypes of C. jejuni and S. enterica can be found in samples from chicken farms, chicken meat sold in markets, and asymptomatic broiler chicken production workers. The most striking feature is the rapid dynamic of change in the genetic profile of the detected species in the same sampling locations. The majority of positive Salmonella spp. samples are MDR S. enterica serovar Muenchen isolates carrying the pESI megaplasmid. The results demonstrate a close relationship between the S. enterica serovar Muenchen isolates found in our sample collection and those responsible for 40% of all clinical Salmonella spp. isolates in Israel as previously reported, with a sequence identity of over 99.9%. These findings suggest the transboundary spread of MDR S. enterica serovar Muenchen strains from animals to humans through the food chain. The study underscores the importance of combining integrated One Health studies with WGS for detecting environmental-animal-human transmission of foodborne pathogens that could not be detected otherwise. This study showcases the benefits of integrated environmental-animal-human sampling and WGS for monitoring AMR. Environmental samples, which may be more accessible in conflict-torn places where monitoring systems are limited and regulations are weak, can provide an effective AMR surveillance solution. WGS of bacterial isolates provides causal inference of the distribution and spread of bacterial serotypes and AMR in complex social-ecological systems. Consequently, our results point toward the expected benefits of operationalizing a One Health approach through closer cooperation of public and animal health and food safety authorities.

Public heath challenges in coping with COVID-19 pandemic in Brazil: an integrative review

Objective: to identify the main public health challenges facing the COVID-19 pandemic, addressing the main difficulties in this chaotic period for Brazilian health. Materials and Methods: This is an Integrative Review (IR) of a descriptive and exploratory nature. With the purpose of developing the guiding question, the domains of the PECo strategy were applied. A bibliographic survey was carried out in February 2023 in the databases: LILACS and MEDLINE via BVS, ColecionaSUS and Science Direct. DeCS and MeSH were selected as descriptors, in which both were linked by the Boolean AND operator. Thus, 10 scientific articles were selected to compose the final sample. Results and Discussion: During the COVID-19 pandemic, public safety authorities faced a number of challenges, including: misinformation, social inequality and economic impact. Final Considerations: It is believed that strengthening democracy and defending the SUS is one of the (perhaps only) ways to face the health crisis that the population is experiencing face to face.

Disaster Information Verification and Validation Application Using Machine Learning

Social media platforms have made it possible for people and organizations to disseminate information to their peers and target markets. Even while most information is shared with the best of intentions, some people utilize social media to further their own agendas. They might publish untrue or inaccurate information in their posts. Before, during, and after disasters and emergencies, social media is rife with rumors, misinformation, and misleading information. These false rumors and information could also make individuals anxious. How to stop the spread of this incorrect information is one of the main problems that public safety authorities and organizations face. DIVVA is a system that, using some provided input text data, evaluates and validates disaster-related information. The system has two tracks: a validation track and a verification track. Verification will classify the textual inputinto categories related to disasters or not related to disasters. The Validation track, on the other hand, will use the official handles of government disaster relief organizations like the NDRF (National Disaster Response Force) to determine whether the event mentioned in the text data actually happened or not before classifying the disaster- related data as real or fake. Therefore, if many individuals receive erroneous information about a calamity, we can utilize our approach to determine if the information is true or false. Our results show that the Bidirectional LSTM model performs well for the tweet classification (i.e. whether the tweets are related to disaster or not) task with 84% accuracy.

Security-driven prioritization for tactical mobile networks

Public safety and security authorities utilize tactical mobile networks to enable communications in situations where fixed infrastructure is unavailable. While these rapidly deployable networks rely on open standards, and support emerging applications and cross-organization federation, they are also vulnerable for cyber and insider threats. Active cybersecurity and threat detection solutions must work in isolated tactical bubbles without human interactions and cannot assume connectivity to remote security operations centers. This study explores the concept of a tactical security operations center (T-SOC) and presents an approach to adapting mobile network applications based on security monitoring and analytics. The security-driven prioritization of traffic flows demonstrates, first, a security decision making that is based on traffic analysis and security posture assessment and, second, an intelligent security response to availability threats by dynamically adjusting quality parameters of live video streams. We describe field trialed implementations based on open-source components and measure and analyze trade-offs between edge and cloud-based deployments. We also discuss other potential reaction strategies, such as trust-based routing, and present directions for future research.

Field trial with tactical bubbles for mission critical communications

AbstractMain research and development interest of 5G and beyond systems are focusing on solution for populated and hot spot areas, but public safety authorities need reliable communication solutions in rural and remote areas. Tactical bubbles—ad hoc‐type nonpublic communications networks built with the 3rd Generation Partnership Project‐based mobile technologies—offer mission critical communications services for public safety authorities in areas with bad mobile network coverage while also providing additional capacity in hot spot areas. In this experimental study, three interconnected bubbles acting on three different frequency bands—2.3 GHz (40), 2.6 GHz (7), and 3.5 GHz (n78)—are trialed. This article provides the analysis of different factors related to performance and user experience of tactical bubbles. Both ground‐level and aerial trial measurements, as well as simulations, were utilized to verify our configuration for the tactical bubbles and their fulfillment of the quality requirements. The performance and coverage of the tactical bubbles are evaluated in a trial, which represents authorities' search operations in a rural environment with hills, forests, and swamps. The achieved coverage range of the bubbles is more than 1000 m with the unmanned aerial system‐based measurements, whereas by car, the coverage is less than 600 m. The effect of obstacles (ie, buildings and hills) on the coverage area and performance of bubbles is significant, especially on car‐based measurements on the ground level.

Serotypes, Virulence Factors and Antibiograms of Escherichia coli Isolated from Diarrhetic Calves in Egypt: A review

Colibacillosis is the main trouble confronted in cattle outputting, causing considerable economic losses. The infected or carrier calves and cows shed the bacteria in the feces and causing the transmission of pathogenic E. coli to calves at the environment. Diagnosis of E. coli infection in calves relies on history, clinical signs, the culture of bacteria, and serotyping of bacteria. Colibacillosis requires immediate response to colibacillosis is variable, centered on isolation and treatment of dehydration &antimicrobial therapy. Parental antibiotics can give a good result if given in the early stage, but not without rehydration therapy. The prevalence of colibacillosis differs from 5.4 to 100%, and it is roughly estimated that calf mortality connected with colibacillosis of 20% may reduce net profit to 40%. The emergence of multi-drug resistant E. coli isolated from diarrhetic calves has been raised as a new concern for public health and food safety authorities. Routine monitoring of E.coli isolated from diarrhetic calves will help reduce the transmission to humans and help select the most effective antibiotics. In conclusion, dam vaccination before calving, improve hygiene around calving and proper colostrum administration considered the main factors to control and prevent the disease. In addition, vigilant monitoring of E. coli isolates recovered from diarrhetic calves for antimicrobial sensitivity pattern will help choose the appropriate antibiotic and decrease the transmission of theses isolates to humans.

Securing Public Safety Communications on Commercial and Tactical 5G Networks: A Survey and Future Research Directions

The forthcoming communication networks for public safety authorities rely on the fifth generation (5G) of mobile networking technologies. Police officers, paramedics, border guards, as well as fire and rescue personnel, will connect through commercial operator's access network and rapidly deployable tactical bubbles. This transition from closed and dedicated infrastructure to hybrid architecture will expand the threat surface and expose mission-critical applications and sensitive information to cyber and physical adversaries. We explore and survey security architecture and enablers for prioritized public safety communication in 5G networks. We identify security threat scenarios and analyze enabling vulnerabilities, threat actors, attacks vectors, as well as risk levels. Security enablers are surveyed for tactical access and core networks, commercial infrastructure, and mission-critical applications, starting from push-to-talk and group video communication and leading to situational-awareness and remote-controlled systems. Two solutions are trialed and described in more detail: remote attestation enhanced access control for constrained devices, and securing of satellite backhauls. We also discuss future research directions highlighting the need for enablers to automate security of rapid deployments, for military-grade cost-effective customizations of commercial network services to ensure robustness, and for hardening of various types of public safety equipment.

A multinational listeriosis outbreak and the importance of sharing genomic data

A multinational listeriosis outbreak and the importance of sharing genomic data

Managing Close Contacts of COVID-19 Confirmed Cases in Metropolitan Areas in China.

The novel coronavirus (COVID-19) outbreak has rapidly spread across the world. As medical systems continue to develop vaccines and treatments, it is crucial for the public health community to establish nonpharmaceutical interventions (NPIs) that can effectively mitigate the rate of SARS-Coronavirus-2 (SARS-CoV-2) spread across highly populated residential areas, especially among individuals who have close contact with confirmed cases. A community-driven preparedness strategy has been implemented in metropolitan areas in China. The Chinese Center for Disease Control and Prevention (CCDC) has required that all COVID-19 confirmed cases be recorded and documented in a national notifiable disease surveillance system (NDSS). After receiving reports of newly confirmed cases, an epidemiological services team at the CCDC or trained medical professionals at local clinical facilities start a case-contact investigation. A task force performs home visits to infected individuals. Persons under investigation (PUIs) can stay in designated quarantine facilities for 14 days or in special circumstances can be quarantined at home. This community-based approach involved all stakeholders including local public health departments, public safety authorities, neighborhood councils, and community health centers.

Cooperation and collaboration between the Polish Police and Armed Forces of the Republic of Poland in terms of ensuring security and public order

Ensuring security and public order is one of the most important, constitutional objectives of the State and at the same time the task of many public authorities. The Police is leading, uniformed and armed formation in a system of public safety authorities whose overriding operating objective, determined by the legislator is to serve the society by protecting people’s safety and maintaining security and public order. However, in carrying out tasks related to such vast area of activity, the Police does not have to be unassisted. Natural partner for the Police is the army, despite the fact that the main task of the Armed Forces of the Republic of Poland is to protect the State and society from external military threat. This study aims to characterize formal foundations and scope of cooperation between Polish Police and Armed Forces in terms of ensuring security and public order. For this purpose, legal basis for providing support for the Police by the Polish Armed Forces under the laws on: state of emergency, natural disaster, crisis management, the Police, counter-terrorism actions and general obligation to defend the Republic of Poland and issued regulations based on them were examined. This article also refers to the issue of cooperation of the Police with the Armed Forces of the Republic of Poland on the basis of concluded agreements.

Performance of Veterinary Services Pathway evolution and One Health aspects.

Animals, and the health systems which ensure their protection, play a vital role in the security and economic and social well-being of humanity, and are therefore a key component of the One Health concept. For global and national health security, prevention is better than cure, and targeting 'risk at source' in animal populations is a vital strategy in safeguarding the planet from risks of emerging zoonoses and antimicrobial resistance (AMR). Neglected zoonoses - such as rabies and brucellosis - continue to have a significant global impact on human health and are also best managed at their animal source. The World Organisation for Animal Health (OIE) has built international consensus on the principles of good governance and the quality of Veterinary Services, which are incorporated within its international standards. The OIE has a proven track record in the provision of Member Country support based on these standards, especially since the advent of its flagship Performance of Veterinary Services (PVS) Pathway programme in 2006-2007. To date, approximately 140 countries have benefited from the structured and sustainable process of animal health systems evaluation and planning afforded by the PVS Pathway. The PVS Tool, the basic methodology upon which the PVS Pathway is based, addresses One Health by evaluating the Veterinary Authority's ability to coordinate with other Competent Authorities that have a role to play in One Health, most notably public health, food safety, and environmental authorities. Despite the undoubted success of the PVS Pathway, the OIE felt that it was time to consider how the programme might be developed to adapt to new challenges. Consequently, during 2017-2018, the OIE embarked on a process of PVS evolution, during which it carried out extensive consultation and further tailored the PVS Pathway to a changing global context. These improvements, which include both fundamental adaptations to the PVS Pathway methods and the development of new PVS Pathway activities targeting topics such as multisectoral collaboration, rabies and AMR, have further strengthened and embedded the One Health approach within the PVS Pathway.

Preparation of phosphor-tungstic acids (H3PW12O40) by solvent extraction with 2-octanol

For more than a hundred years, extraction with ethyl ether has been the most used method for synthetizing H3PW12O40. However, the use of ethyl ether as the extraction agent faced many problems, such as strict regulation by public safety and environment authorities, poor operating environment, significant dissolution loss, low yields (approximately 80%), and difficulty in realizing continuous production.To overcome these problems, a new extraction method has been proposed in this paper, which uses 2-octanol as the extraction agent and water as the stripping agent. Under optimal conditions (30% 2-octanol in kerosene, O:A = 1:1, 180 g/L H2SO4, 20 g/L H3PO4, 45 °C, and a contact time of 2 min), 90.2% of H3PW12O40 contained in the solution was extracted in a single stage; the loaded H3PW12O40 could then be stripped completely via 3-stage continuous countercurrent stripping by maintaining O:A = 5:1, 65 °C, and t = 5 min. Finally, the obtained strip liquor, containing more than 550 g/L H3PW12O40, was evaporated to obtain crystals, resulting in an increased recovery rate of 10%.

Surveillance of a Synthetic Cannabinoid Overdose Outbreak using Syndromic &amp; EMS Data

Objective: The aim of this project was to investigate anecdotal reports of an increase in synthetic cannabinoid (SynCan) overdoses in Lexington-Fayette County area of Kentucky, using rapid surveillance systems including emergency department (ED) syndromic surveillance (SyS) and emergency medical services (EMS) data.Introduction: In mid-2017, the Kentucky Injury Prevention and Research Center (a bonafide agent of Kentucky Department for Public Health-KDPH) was alerted by members of KDPH to anecdotal evidence of a possible increase of SynCan (primarily “Serenity”) overdoses. The situation presented an opportunity to demonstrate the capabilities of syndromic surveillance and emergency medical services (EMS) data systems to provide rapid situational awareness about SynCan overdoses.Methods: SynCan cases were identified based on EMS emergency runs with narratives including mentions of ‘serenity|K2|spice’ and occurred in the Lexington-Fayette County. In ED SyS, SynCan cases were identified for Lexington-Fayette County area ED visits with a chief complaints of ‘serenity|K2|spice’ or diagnosis code of T40.7X[1-4]A. The ICD code was included after analysis of diagnosis codes in positive cases from a chief complaint only query revealed T40.7X[1-4]A as a primary code assigned in these cases. Trends for Lexington-Fayette County area were compared to state-wide total to determine if the trend is unique or related to system-wide pattern changes. EMS and ED SyS trend results were compared for internal validity. EMS incident addresses were geocoded to point-level to enable more granular analysis of geospatial patterns over time for identification of hotspots/clustering.Results: ED SyS and EMS results demonstrated a clear temporal increase in SynCan overdoses beginning around March of 2017[Fig 1]. Further analysis indicated that this increase was most dramatically centered in the Lexington-Fayette County area [Fig 2]. The vast majority of those overdosing were males (SyS: 88.1%) with average age 37 compared to 11.9% and 36.0 for females, respectively. These demographics are similar to those reported by the New York City Department of Health and Mental Hygiene for a K2 outbreak in New York City in 20141. Kernel density mapping demonstrated a strong clustering in a specific area of downtown Lexington. Additionally, analysis of EMS data revealed that a large portion of these overdoses were being admitted for observational care and thus not being captured in SyS data (based on the primary hospital’s submission types).From a practical standpoint, the rapid surveillance results only took 1-2 days to complete and highlight the utility of these data systems in preparing rapid data products. The results of the analysis were shared with local and state health department authorities, including the local Emergency Medical Advisory Board. The geospatial analysis provided local authorities with information to enable precise targeting of public health and public safety messaging.Conclusions: By analyzing data from these systems, we were able to quickly identify the geographic areas and demographic groups that were most affected, and to describe trends in SynCan overdoses over time. As a result, we were able to provide highly-detailed data to local public health and public safety authorities to inform their response.

Crisis communication adaptation strategies in the MM&A train explosion in Lac-Mégantic downtown

PurposeThe purpose of this paper is to deal with the adaptation of communication strategies set out in the pre-crisis plan implemented by the members of Quebec’s public safety authorities in the specific case of the rail explosion and fire that destroyed the downtown of Lac-Mégantic in July 2013.Design/methodology/approachBased on a triangulation approach combining three qualitative methodologies, namely in-depth interviews, analysis of communication artifacts, and news analysis, this research aims to determine how public safety authorities used the existing crisis management plan at the time of the Lac-Mégantic crisis. It also seeks to determine whether or not the crisis managers used emergent communication strategies, as defined by Mintzberg (2007). Finally, the case study also seeks to identify potentially unforeseen contextual elements that influenced the communication strategies deployed.FindingsThe analysis reveals that the disaster, whose magnitude and consequences were unprecedented in Canada, prompted those in charge of public safety to review the established crisis management communication strategies and practices in order to adapt to the realities of a particular terrain and context. It is important to mention, first, that the crisis was managed in an unforeseen context of a twofold digital divide that created a dead zone for emergency and public health messages; and, second, that direct communication with the victims revealed major difficulty in understanding such messages (literacy). As a result, the traditional and digital communication strategies established in the crisis management plan had to be rapidly reviewed in order to incorporate “old-fashioned” communication tools, such as giving out information door-to-door, meeting with people on their front porches, and holding informal street gatherings with public health doctors and social workers to better communicate messages to the disaster victims and to promote the adoption of safe behaviors.Originality/valueThe findings demonstrate that in a crisis and emergency context, communication efforts must sometimes deviate from the planned strategies and come back to simple, direct, and “human” communication methods in order to adapt to the realities of the victims.

Emergency crowd evacuation modeling and simulation framework with cellular discrete event systems

First responders and security personnel face many challenges to safely evacuate crowded environments. Conducting frequent physical and table-top exercises are neither feasible nor economical. This is where modeling and simulation comes into play in providing a risk-free and economical method to practice various evacuation strategies, train first responders, and provide accurate decision-support and emergency guidance. With the aid of formal methods, here we present a suite of various egress strategies build on top of an open-source modeling and simulation environment. We use Cellular Discrete-Event System Specification (Cell-DEVS) formalism to explore emergency evacuation scenarios by building 12 egress models representing aspects of human behaviors under emergencies and the activities of authorities in guiding the crowd. The proposed framework explores random and controlled human movement, as well as implementing psychological conditions such as herd following and panicked states. We provide results analysis to compare evacuation speed under various egress methods, allowing for decision making when using the suite for training purposes. The outcome of this work is available on a public repository to serve the DEVS community, researchers, and public safety authorities interested in emergency evacuation simulations.

Confounding borders and walls: documents, letters and the governance of relationships in São Paulo and Barcelona prisons

Spanish women arrested in São Paulo, and Brazilian women arrested in Barcelona, often carry letters and documents in folders, plastic bags and envelopes, well protected in pockets, purses or knapsacks. The papers tell of events in the lives of these women, and provide clues and legibility to relationships maintained with people and places outside prison. In this paper, I analyze how letters and documents are products of family and transnational relationships that they can also produce. The paper looks at how they are used as evidence of families and loving relationships that each day are evaluated, and recognized or rejected, by public safety authorities, prison wardens, prosecutors, public defenders, consulates and immigration police. The letters and documents tell stories that are used to substantiate the deportation or immigration of Spanish women imprisoned in São Paulo and Brazilian women imprisoned in Barcelona.