scholarly journals Methods to Improve the Design of Household Fire Extinguishers through an Empirical Analysis of Consumer Compatibility

2020 ◽  
Vol 34 (3) ◽  
pp. 58-66
Author(s):  
Sung-Woo Lee
Keyword(s):  
Empirical Analysis ◽  
Fire Department ◽  
Fire Extinguisher ◽  
Loss Of Life ◽  
Fire Services ◽  
Korean Government ◽  
Fire Extinguishing ◽  
The Future ◽  
Household Environment ◽  
Fire Extinguishers

Households are categorized as exceptions in the Fire Services Act; oftentimes, the ‘Golden Time’ is missed at the early stages of a fire, resulting in loss of life. As such, due to the high number of deaths caused by household fires, the Korean government amended the Fire Services Act to make it mandatory for all detached houses to be equipped with a fire extinguisher from 2017 onwards. Only 34.8% of households were properly equipped with a fire extinguisher, according to the 2018 factual survey on fire extinguishing facilities in households conducted by the Fire Department. Fire extinguishers are crucial in case of fire but many households avoid them because they are red and have a rough aesthetic, which does not suit the household environment. There is now a need for diverse simple fire extinguisher designs so that they can be used as interior décor in the household in the day-to-day while being available for putting out a fire when necessary. If fire extinguishers have designs that go well with any household space like other decorative ornaments, this will greatly increase consumers’ motivation to purchase them. It is greatly anticipated that various companies will work on developing designs for fire extinguishers to commercialize them for households in the future.

scholarly journals Automatic Fire Extinguishing Agent Using Microcapsule for Early Fires

2021 ◽  
Vol 21 (2) ◽  
pp. 73-79
Author(s):  
Youngsam Lee ◽  
Sooho Baek
Keyword(s):  
Fire Safety ◽  
Fire Department ◽  
Fire Extinguisher ◽  
Fire Statistics ◽  
Small Space ◽  
Statistics Analysis ◽  
Common Cause ◽  
Safety Standards ◽  
Fire Extinguishing ◽  
Electrical Distribution

According to fire statistics analysis of the nation's fire department between 2015–2019, the most common cause of fire was electrical fire. As reported, 47,135 fires were caused by electricity, 22,852 were caused by mechanical causes, and 871 were caused by gas leakages. In this study, the fire adaptability of microcapsulated fire extinguishing agents was tested against small space electrical fires, such as electrical distribution boards. The tests showed that the fire extinguishing agent inside the capsule was released after initial fire contact and the fire of n-heptane was extinguished within 4.48 seconds (on average). Therefore, the KFI small space B-level fire extinguishing test by the Korea Institute of Fire and Industry met the criteria that the fire was extinguished and did not reoccur within 90 s after the end of the preliminary combustion. In addition, this fire extinguisher (agent) dramatically improved the volume of existing cylinder-type fire extinguishers for small spaces. However, there are no national fire safety codes (NFSCs) for this agent. Therefore, it is necessary to enact fire safety standards for this agent for smooth-field applications.

Fire Fighting of Wind Extinguisher with CO2 Gas Assisted

2011 ◽  
Vol 130-134 ◽  
pp. 1054-1057
Author(s):  
Chang Sheng Liu
Keyword(s):  
Wind Speed ◽  
Adverse Effects ◽  
Ambient Temperature ◽  
Gasoline Engine ◽  
Fire Fighting ◽  
Fire Extinguisher ◽  
Structure Characteristics ◽  
Main Drawback ◽  
Fire Extinguishing ◽  
Fire Extinguishers

The fire fighting equipments used for fight forest and grassland fire of China are mainly small two-stroke gasoline-powered portable wind fire-extinguishers owing to these areas are located in the more remote and inaccessible, where generally stay away from water. The main drawback of the wind fire-extinguisher is that it would lower the efficiency of power attributed to overheating of the two-stroke gasoline engine in the long process of firefighting, which will lead to decline the output speed and volumetric flow of fire extinguishing wind drived by the turbine when fire ambient temperature is high in the spring and summer. If this situation occurs, it will reduce efficiency of its fire fighting, what is more the adverse effects of wind to help the fire rather than put out the fire because the output of the extinguishing wind speed and volumetric flow is too small. In order to avoid the occurrence of such adverse effects and improve the extinguishing effect of fire extinguishers in the long process of firefighting, a program which use CO2 coordinate with wind fire-extinguisher to put out a fire was proposed in this paper, and the structure, characteristics of operation and precautions of the CO2 fire-extinguisher were described detailly.

Empirical Analysis of the Influence of Culture in Managerial Processes Based on the Hofstede Model

2020 ◽  
Vol 26 (1) ◽  
pp. 205-210
Author(s):  
Dumitru Iancu ◽  
Dorel Badea
Keyword(s):  
Empirical Analysis ◽  
Decision Makers ◽  
Cultural Characteristics ◽  
The Future ◽  
Organizational Problem ◽  
Cultural Structure

AbstractWe communicate and decide every day, but the complexity of the context in which we do these things is increasing. Today, the cultural structure of the organization’s members, due to the need to have competent employees in correlation with the established objectives, is somewhat puzzled and dynamical. Thus, the decision-makers must take into account (mandatory) the cultural basis of the subordinates when choosing the best alternative for solving an organizational problem. From this perspective, Hofstede’s model can be one of the explanatory modalities of the organization’s cultural characteristics as a basis to identify the action’s solutions in that organization for the future.

scholarly journals Improving Sustainability of Smart Cities through Visualization Techniques for Big Data from IoT Devices

2020 ◽  
Vol 12 (14) ◽  
pp. 5595 ◽  
Author(s):  
Ana Lavalle ◽  
Miguel A. Teruel ◽  
Alejandro Maté ◽  
Juan Trujillo
Keyword(s):  
Big Data ◽  
Smart City ◽  
Smart Cities ◽  
Fire Department ◽  
Heterogeneous Data ◽  
Fire Extinguishing ◽  
Heterogeneous Data Sources ◽  
Iot Devices ◽  
Visualization Techniques ◽  
The Impact

Fostering sustainability is paramount for Smart Cities development. Lately, Smart Cities are benefiting from the rising of Big Data coming from IoT devices, leading to improvements on monitoring and prevention. However, monitoring and prevention processes require visualization techniques as a key component. Indeed, in order to prevent possible hazards (such as fires, leaks, etc.) and optimize their resources, Smart Cities require adequate visualizations that provide insights to decision makers. Nevertheless, visualization of Big Data has always been a challenging issue, especially when such data are originated in real-time. This problem becomes even bigger in Smart City environments since we have to deal with many different groups of users and multiple heterogeneous data sources. Without a proper visualization methodology, complex dashboards including data from different nature are difficult to understand. In order to tackle this issue, we propose a methodology based on visualization techniques for Big Data, aimed at improving the evidence-gathering process by assisting users in the decision making in the context of Smart Cities. Moreover, in order to assess the impact of our proposal, a case study based on service calls for a fire department is presented. In this sense, our findings will be applied to data coming from citizen calls. Thus, the results of this work will contribute to the optimization of resources, namely fire extinguishing battalions, helping to improve their effectiveness and, as a result, the sustainability of a Smart City, operating better with less resources. Finally, in order to evaluate the impact of our proposal, we have performed an experiment, with non-expert users in data visualization.

A Comparative Study on the Noise between Floors of Apartment and Multiplex Housing

2015 ◽  
Vol 752-753 ◽  
pp. 1232-1235
Author(s):  
Ji Hun Kim ◽  
Yoon Seok Shin
Keyword(s):  
Comparative Analysis ◽  
Comparative Study ◽  
Field Measurements ◽  
Apartment Building ◽  
Noise And Vibration ◽  
Korean Government ◽  
Current State ◽  
The Future ◽  
House Type ◽  
Almost All

Since recently almost all housing built in Korean have shared walls and floor, diverse problems are unavoidable including noise between floor arising from noise and vibration. Many efforts have been made by the Korean government, but the number of complaints related with the noise between floors has been gradually increasing. Therefore, through the field measurements by house type, the current state of noise was understood. To do this, the noise between floors was measured in an apartment household and a multiplex house to perform a comparative analysis. As the result, the differences in the noise between the two house types were clarified. The findings of this research are expected to contribute to reduction of the noise between floors in an apartment building in the future.

The Study of Fire-extinguishing Process of Modelled Fire Seats

2021 ◽  
pp. 57-62
Author(s):  
V.N. Bordakov ◽  
Keyword(s):  
Flow Rate ◽  
Experimental Studies ◽  
Physical Modelling ◽  
Specific Flow Rate ◽  
Specific Flow ◽  
Acceptable Error ◽  
Fire Extinguishing ◽  
Fire Zone ◽  
Analysis Of Results ◽  
Fire Extinguishers

Test-fires to determine fire-extinguishers’ efficiency for extinguishing B class fires are conducted by operators equipped with working clothes, which does not comply with the requirements of physical modelling. This is why the ranks of extinguished modelled seats are significantly overestimated. The quantitative results of fire seats’ extinguishing can be comparatively evaluated in accordance with the value of specific flow rate of a fire-extinguishing agent. As it was detected, the specific flow rate of a fire-extinguishing agent does not actually depend on the rank of modelled fire seat when extinguished by an operator wearing thermal-protective clothes. At the same time, it is increasing along with the expansion of the fire zone scale in case the fire is extinguished without special protective clothes. Consequently, to increase the fire-extinguisher’s efficiency data reliability, the certifying tests should be conducted in conditions close to the real application conditions when the first person to firefight is not equipped with such special protective clothes. The experimental studies to determine the specific flow rate of a fire-extinguishing agent used modelled fire seats of various ranks. The analysis of results showed that the fire-extinguishers ensuring generation of drops of prevailing size more than 0,5 mm are required to extinguish the modelled sire seats. The degree of increasing flow rate for the fire-extinguishing agent to eliminate a fire and observation of a safe distance from the flame for an operator are conditioned by the scale of fire zone and affect the specific flow rate of agent required to ensure stable fire-extinguishing. Based on the results of extinguishing the fire seats «34В» or «55В», it is demonstrated that via using a correction factor it is possible, assuming an acceptable error, to evaluate the flow rate of fire-extinguishing agent to extinguish a modelled fire seat of any rank.

scholarly journals The Analysis of Blocking Behavior and Pricing: The Case of Airbnb

2020 ◽  
pp. 1-28
Author(s):  
Yifeng Peng
Keyword(s):  
Empirical Analysis ◽  
Rapid Growth ◽  
Profit Maximization ◽  
Sharing Economy ◽  
Pricing Strategy ◽  
Pricing Strategies ◽  
Product Pricing ◽  
Starting Point ◽  
The Future ◽  
Resources Sharing

Over the years, as people's lives have improved, our need for transportation and accommodation has increased, driving the rapid growth of the sharing economy. Some well-known network sharing platforms, such as Uber, Drip and Airbnb, provide a large number of convenient options for users with transactional needs, make more use of idle tourism, accommodation and other resources. Sharing economy platforms continue to improve the content and format of their products, but at the same time, the future of sharing platforms and the difficulty of competition is a concern as more platform companies become involved and prices become more transparent. Under this circumstance, optimizing product pricing has become an urgent need for many sharing economy platforms. In this paper, we take Airbnb as the starting point and conduct an empirical analysis of the blocking behavior of homeowners based on proprietary data to explore the factors that affect their product supply. We find that price, number of beds, and listing type all have a significant impact on blocking houses. After that, we conducted further research on price factors and developed a model aiming at profit maximization to obtain the best pricing range for the region and provide suggestions for pricing strategies. Keywords: Sharing Economy, Blocking behavior, Pricing Strategy, Airbnb

scholarly journals E-GOVERNMENT IN BULGARIA – STRATEGIC OBJECTIVES FOR DEVELOPMENT AND RESULTS FROM IMPLEMENTATION OF PROJECTS

2019 ◽  
Vol 17 (Suppl.1) ◽  
pp. 76-81 ◽  
Author(s):  
T. Daskalova
Keyword(s):  
Empirical Analysis ◽  
Future Development ◽  
Good Governance ◽  
Strategic Objectives ◽  
Scientific Methods ◽  
The Future ◽  
Research Problems ◽  
The Republic

The development of e-Government is the main priority in the strategic documents of the Republic of Bulgaria during the programme period 2014-2020. The projects financed under Operational Programme “Good Governance” are of key significance both for the attainment of the strategic objectives and of the expected results input in them. The purpose of the publication is to analyse the conformity between the strategic documents and the projects implemented in the sphere of e-Government in the country. A desk analysis, an empirical analysis and other scientific methods are applied for the attainment of the purpose in the research. Problems in their development are identified as a result of the analysis of the current projects and alternatives are proposed for their elimination. Perspectives are outlined for the future development of the e-Government in Bulgaria in conclusion.

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