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1 – 10 of over 12000The increase in sophistication of aircraft has led to considerable escalation in the complexity of their alarm (i.e. warning and caution) systems in recent years. Each…
Abstract
The increase in sophistication of aircraft has led to considerable escalation in the complexity of their alarm (i.e. warning and caution) systems in recent years. Each individual alarm requires careful design in human engineering terms to ensure its validity in the environment of the aircraft flight‐deck.
Huynh Thi Lan Huong and Luong Huu Dzung
Determining alarm levels of river floods is considered an effective non-structural measure to prevent and mitigate the damages of flood and inundation. This study aims to…
Abstract
Purpose
Determining alarm levels of river floods is considered an effective non-structural measure to prevent and mitigate the damages of flood and inundation. This study aims to propose a holistic approach, a comprehensive review of the factors affecting flooding and flood risk, based on which the water level (WL) is proposed for the flood alarm levels. The corresponding proposed WL to the necessary flood alarm levels is based on observed data, as well as simulated data from statistical methods and hydrological and hydraulic models.
Design/methodology/approach
In this paper, the proposed criteria to delineate WLs corresponding to flood alarm levels include flood magnitude; flood derivation and flood duration; flood risks and damage; correlation with neighboring stations; flood characteristics and local characteristics; and other criteria (flood prevention strategy and flood experience).
Findings
The paper proposed a synthesis approach to determine flood warning levels in Vietnam. The retrieved levels are the basics to revise the Decision 632/2010 of the Vietnam Government on determining water alarm levels for flood prevention. The study proposes a new flood alarm system including revised flood levels at 115 existing stations and new flood levels at 30 additional stations. The proposed flood warning level can help manage the flooding problem in major river systems that supports flood protection and prevention services in Vietnam.
Originality/value
The paper proposed a novel synthesis approach to flood prevention in Vietnam.
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Valery Gitis and Alexander Derendyaev
The purpose of this paper is to offer two Web-based platforms for systematic analysis of seismic processes. Both platforms are designed to analyze and forecast the state…
Abstract
Purpose
The purpose of this paper is to offer two Web-based platforms for systematic analysis of seismic processes. Both platforms are designed to analyze and forecast the state of the environment and, in particular, the level of seismic hazard. The first platform analyzes the fields representing the properties of the seismic process; the second platform forecasts strong earthquakes. Earthquake forecasting is based on a new one-class classification method.
Design/methodology/approach
The paper suggests an approach to systematic forecasting of earthquakes and examines the results of tests. This approach is based on a new method of machine learning, called the method of the minimum area of alarm. The method allows to construct a forecast rule that optimizes the probability of detecting target earthquakes in a learning sample set, provided that the area of the alarm zone does not exceed a predetermined one.
Findings
The paper presents two platforms alongside the method of analysis. It was shown that these platforms can be used for systematic analysis of seismic process. By testing of the earthquake forecasting method in several regions, it was shown that the method of the minimum area of alarm has satisfactory forecast quality.
Originality/value
The described technology has two advantages: simplicity of configuration for a new problem area and a combination of interactive easy analysis supported by intuitive operations and a simplified user interface with a detailed, comprehensive analysis of spatio-temporal processes intended for specialists. The method of the minimum area of alarm solves the problem of one-class classification. The method is original. It uses in training the precedents of anomalous objects and statistically takes into account normal objects.
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Mustafa Suphi Erden and Aude Billard
The purpose of this study is to develop a robotic training system for the hand movements during manual welding. The system provides real-time notice-feedback with sound or…
Abstract
Purpose
The purpose of this study is to develop a robotic training system for the hand movements during manual welding. The system provides real-time notice-feedback with sound or light alarms, whenever the welding hand vibrates beyond the nominal level observed with professional welders.
Design/methodology/approach
The large variations of hand movements are detected by monitoring the deviation of the tool position from a smooth curve estimated in real time by a Kalman filter. An alarm is generated in the form of a flashing light or beep sound whenever the deviations exceed a predetermined threshold. The performance of hand movements is measured in terms of the variations of the position data. Twelve novice and five professional welders took part in the experiments and answered a questionnaire that assessed the usability and work load of the system.
Findings
Compared to the sound alarms, the light alarms resulted in a larger and statistically significant decrease in the variation of hand movements of the novice welders and brought the level of variation close to that of the professional welders. The alarms did not result in a significant decrease in the variation of hand movements of the professional welders. The responses to the questionnaire indicated that both professional and novice welders found the system useful and they did not experience any significant work load.
Social implications
The system developed in this study can ease the training of novice welders, by speeding up the learning and reducing the need for human tutors.
Originality/value
This study is first to provide real-time notice-feedback for training while manual welding, based on a comparison of the performances of novice and professional welders.
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This paper provides readers with an in‐depth look at the steps that must be taken to provide the proper planning for the implementation of physical security measures at…
Abstract
This paper provides readers with an in‐depth look at the steps that must be taken to provide the proper planning for the implementation of physical security measures at various threat levels. Readers will be provided with techniques for developing security operational concepts for various threat levels, developing alarm response procedures for security personnel, developing security patrol response procedures, maintaining operational procedures, and training security staff. This paper is designed for the security or facility manager who wants to confirm that their physical security programme meets their facility’s security needs and is consistent with the threat analysis for each facility. Readers will also receive instruction on how to improve their security systems by concentrating on how the security personnel will use the security systems to mitigate the risks. This paper will be useful for managers who already have physical security systems in place or who are planning to install or upgrade a security system.
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Although there is a growing international movement toward the use of engineered or performance‐based fire safety design, current practice is dominated by…
Abstract
Although there is a growing international movement toward the use of engineered or performance‐based fire safety design, current practice is dominated by prescriptive‐based design. In prescriptive‐based fire safety design, only those requirements prescribed by appropriate building regulations, installation standards, or approved documents tend to be applied. Because these requirements typically include fire protection measures, such as fire detection and signaling systems, automatic sprinkler systems, fire compartmentation, and emergency egress systems, there is often an assumption that occupants, employees, and users of a facility will be safe should a fire occur. However, there are a variety of factors that could affect the actual fire safety of a facility that comply with the appropriate regulations. Fuel type, loading, configuration, and location can change, leading to an increase in fire risk. Occupants may not see, hear or understand fire alarm signals as fire alarm signals. Fire detection and signaling systems, fire suppression systems, or smoke management systems may not be 100 percent functional at all times. Fortunately, many of these factors can be controlled for, if they are understood and addressed, within a fire safety management plan. To assist with such planning, this paper discusses various human behavior and response issues that may affect life safety during a fire or emergency, and provides suggestions for integrating these issues into a fire safety management plan.
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Noora Kokkarinen, Andy Shaw, Jeff Cullen, Montserrat Ortoneda Pedrola, Alex Mason and Ahmed Al-Shamma’a
The purpose of this paper is to outline the level of audible carbon monoxide (CO) alarm ownership. In this particular paper the data collected by the fire and rescue…
Abstract
Purpose
The purpose of this paper is to outline the level of audible carbon monoxide (CO) alarm ownership. In this particular paper the data collected by the fire and rescue services from West Midlands and Merseyside will be analysed, and discussed.
Design/methodology/approach
Research was conducted in two stages. Using the indices of multiple deprivation identified whether households in the top and bottom four areas owned an audible alarm. In stage two data loggers were placed into homes to take readings every minute for a total period of three days to three weeks.
Findings
There was a noticeable trend that deprived areas were less likely to own audible CO alarms than homes in non-deprived areas. All homes surveyed in stage two had CO levels >0 which further emphasises that anyone can be under health risk and that perhaps the maintenance of gas appliances and other sources is not being conducted at regular intervals.
Social implications
This paper aims to raise awareness regarding not only the symptoms during CO poisoning but also the ones that have been reported to occur after treatment. It will also disseminate information as to what areas have low alarm ownership and thus more at risk of poisoning. It is hoped that findings from papers such as this one will promote more stringent maintenance and replacement requirements for gas or solid fuel appliances.
Originality/value
Pilot study for the comparison of two English cities has not been conducted before and may lead to more studies of this kind.
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Research and experience show that occupants tend to ignore fire alarm signals and continue their activities in large public buildings. Alternative means to alert the…
Abstract
Research and experience show that occupants tend to ignore fire alarm signals and continue their activities in large public buildings. Alternative means to alert the public in the event of an emergency and to initiate evacuation movement are discussed. The use of a standardized Temporal‐Three fire alarm signal is advocated to ensure occupant recognition of the fire alarm. Also, a communication system combined with closed‐circuit televisions (CCTVs) is recommended to convey precise information to the public. Building managers are considered responsible for developing a fire safety plan, and for ensuring that employees are well trained and that communication among staff is efficient in order to transmit information to the public that will prompt fast and safe evacuation movement.
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Michael Alles, Gerard Brennan, Alexander Kogan and Miklos A. Vasarhelyi
In this paper we report on the approach we have developed and the lessons we have learned in an implementation of the monitoring and control layer for continuous…
Abstract
In this paper we report on the approach we have developed and the lessons we have learned in an implementation of the monitoring and control layer for continuous monitoring of business process controls (CMBPC) in the US internal IT audit department of Siemens Corporation. The architecture developed by us implements a completely independent CMBPC system running on top of Siemens’ own enterprise information system which has read-only interaction with the application tier of the enterprise system. Among our key conclusions is that “formalizability” of audit procedures and audit judgment is grossly underestimated. Additionally, while cost savings and expedience force the implementation to closely follow the existing and approved internal audit program, a certain level of reengineering of audit processes is inevitable due to the necessity to separate formalizable and non-formalizable parts of the program. Our study identifies the management of audit alarms and the prevention of the alarm floods as critical tasks in the CMBPC implementation process. We develop an approach to solving these problems utilizing the hierarchical structure of alarms and the role-based approach to assigning alarm destinations. We also discuss the content of the audit trail of CMBPC.
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Leigh Plunkett Tost and E. Allan Lind
Purpose – In this chapter, we seek to resolve the conflicting implications that emerge from status quo theories of justice, on the one hand, and theories of distributive…
Abstract
Purpose – In this chapter, we seek to resolve the conflicting implications that emerge from status quo theories of justice, on the one hand, and theories of distributive, procedural, and interactional justice on the other. Specifically, status quo theories depict individuals as resistant to perceptions of injustice in their social environments, whereas theories of distributive, procedural, and interactional justice depict individuals as quite sensitive to the justice that characterizes outcomes and treatment.
Methodology/approach – We build on previous research on the justice judgment process to consider ways in which the findings from these two research streams can be integrated.
Findings – We suggest that the two overarching streams of research have identified and empirically explored two distinct modes of justice evaluation: a system justification mode and a system critique mode.
Originality/value of chapter – We develop a model of the justice judgment process that specifies the circumstances under which each of the two modes is likely to operate.