Essay on F/CFAT : An Approach for Combined Safety and Security Analysis

:: 10 Works Cited
Length: 1413 words (4 double-spaced pages)
Rating: Blue      
Open Document
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

System safety is a complex concept, which is represented by multiple attributes and which requires diverse sources of evidence to demonstrate its achievement. Safety-critical systems, which provide safety-critical services to their users, must be designed to be safe. This means that despite their complexities and despite variable environmental conditions, their operation should be demonstrably safety. A fundamental difficulty in measuring system safety arises due to the complexity of the notion – it is made up of multiple, potentially conflicting attributes, and difficult trade-offs may need to be made between these attributes. The attributes themselves are evaluated using multiple diverse sources of evidence, thus compounding the problem of measuring system safety.
Software safety has become an ever increasingly important issue in system safety due to the larger role software plays in complex cyber-physical systems. Such a system is a consisted of a number of components distributed over a predefined space. Components of a typical cyber-physical system communicate with each other and with an external world through communication gateway. The safety failures of the components of such a system result in safety hazard of the whole system. Additionally, external attackers can attack the system through sensor network and communication gateway and can manipulate software processes and data stored and exchanged in the system.
Over the last decades a good many number of safety analysis methods (i.e., FMEA, HAZOP, FTA) have been developed. Among them Fault Tree Analysis (FTA) [1] is a widely accepted method. It graphically shows how basic failures of components, in combination, cause a safety hazard at the system level....

... middle of paper ...

...and System Safety Analysis”. IASTED’04.
[4] J. Xiang, K. Ogata and K. Futatsugi. “Formal Fault Tree Analysis of State Transition Systems”. QSIC’05.
[5] K. M. Hansen, and A. P. Ravn. “From Safety Analysis to Software Requirements”. IEEE Transactions on Software Engineering 24(7). 1998.
[6] D. Coppit, K. J. Sullivan and J. B. Dugan. “Formal Semantics of Models for Computational Engineering: a Case Study on Dynamic Fault Trees”. ISSRE’00.
[7] G. Schellhorn, A. Thums and W. Reif. “Formal Fault Tree Semantics”. WCIDPT’02.
[8] W. Reif, G. Schellhorn, and A. Thums. “Safety Analysis of a Radio-Based Crossing Control System using Formal Methods”. IFAC’00.
[9] B. Kaiser. “A Fault-Tree Semantics to Model Software-Controlled Systems”. Softwaretechnik-Trends 23(3). 2003.
[10] B. Kaiser, P. Liggesmeyer and O. Maeckel. “A New Component Concept for Fault Trees”. SCS’03.

Click the button above to view the complete essay, speech, term paper, or research paper

This essay is 100% guaranteed.

Title Length Color Rating  
Protecting Firefighters Lives and Safety Essay - Every year communities struggle each year around the nation with issues of life safety. In 2012, the nation’s fire departments responded to 31,854,000 responses that resulted in the deaths 0f 2,855 civilians and injuring 16,500 causing an estimated $12,427 million dollars in damage. (United States Fire Administration, 2014) These incidents put at risk 345,950 career and 783,300 volunteer firefighters that resulted in the deaths of 81 individuals (U.S. Department of Homeland Security, 2013) and nearly 70,000 reported injuries....   [tags: safety, homeland security]
:: 22 Works Cited
1939 words
(5.5 pages)
Term Papers [preview]
Enhancing Focus on Airplane Security and Safety Essay - Everyday, millions of people throughout the world fly on airplanes to get to their destination. They have allowed people to travel to exotic places or just simply granted the ability for family members to see each other even if they are long distances apart. It is a convenient and effective means of transportation that is continuously growing and has a limitless future. Additionally, they are a structure with the potential to do a lot of good in this world and are a gift to all. However, like most gifts, someone is out to abuse them....   [tags: Airplane Safety] 908 words
(2.6 pages)
Better Essays [preview]
The Safety and Security of Students at a University Essay - Formatting Problems The Safety and Security of Students at a University Introduction Our group designed a study to measure violent crimes that occur on University’s campus. We began this study with the benefit being able to be distributed 3 ways: the parents, students, and faculty/staff. The parents would benefit from the results of the study by knowing or gaining a better understanding of how safe the campus of University is. The students would be better equipped with the tools needed to prevent and observe certain crimes from occurring on campus....   [tags: Security] 1123 words
(3.2 pages)
Strong Essays [preview]
Trading Privacy for Safety.: Is it worth It? Essay - Airports have become an extremely controversial since the implementation of body scanners. They have caused people to choose to side for or against the use of these scanners as a safety measure at airports. Due to the attacks of 9/11, Lockerbie, the underwear bomber and others, airport security has become a growing issue. This advancement is necessary since it is a matter of public safety, it protects against terrorist attacks and it is not that much of a hassle.Despite the argument against body scanners in airports that say they waste valuable time and it is invasive, they are necessary due to terrorist attacks and threats to people’s safety....   [tags: Security, Body Scanners, Airports, Safety]
:: 5 Works Cited
1158 words
(3.3 pages)
Strong Essays [preview]
Essay on Global Maritime Distress and Safety System - ... A problem is that a fishing wireless or cell phone cannot be a sufficient communication method for it can be out of service out at sea. As for the maritime distress incidents rates in Korea,vessels of 5 ton or less had 257 cases of incidents occupying 34% of all the incidents by vessels in 2008 (767 cases in 2008).Generally , Most vessels of 5 ton or less are operated by 1 person or a couple who are usually elderly not very competent with first responses in emergency. As a result, most incidents unfortunately cause fatal accidents.some small vessels led to missing or death because they could not get help even though they are operated off the shore within 2-3 miles (approx....   [tags: security, safety, pollution, communiction] 557 words
(1.6 pages)
Research Papers [preview]
Essay about Singapore Hotel Security Conference - A Hotel Security Conference 2007 was held in Singapore with the Senior Minister of State for Law and Home Affairs of Singapore addressing the public, and highlighting the need to enhance building security especially hotels. Ho (2007) has specially mentioned in this forum the usage and to incorporate CPTED considerations in future building or redevelopment plans, and as early as possible in all building design plan. He further mentioned that this approach will make security and criZXCxcsDDvcwvme prevention activity much more effective in the long term....   [tags: Security ] 1285 words
(3.7 pages)
Strong Essays [preview]
It Should Be Mandatory that All Security Guards Be Armed On Duty Essay - ... A security guard standing in the corner of that bank unarmed would be pretty pointless. That unarmed guard would not be able to stop the robber from putting a bullet through the bank employees or the bank costumers, nor would the guard be able to stop him from robbing the place. On the other hand if that guard who was standing in the corner would have been armed it would be a lot more intimidating. The sight of the fire arm on the guards waist may make the criminal think twice. If at that point the criminal would over look the guard and proceed to rob the place, the guard could then put the skills he learned through his training to use....   [tags: private security, safety, violence]
:: 3 Works Cited
979 words
(2.8 pages)
Strong Essays [preview]
The Security of Nuclear Power in the U.S.: We May Be in Trouble Essay - ... This is accomplished by holding “force-on-force” testing; annual events pitting mock attackers against the security apparatus of each nuclear power plant involved. When the maneuvers had concluded for the year, the NRC reported 23 issues that could have resulted in serious loss to either the plant or its personnel, but it isn’t clear what the issues are because the NRC is in the habit of not clarifying what they may be. More disconcerting is that one plant ended up being destroyed, “During one force-on-force exercise during 2012, the mock attackers simulated the destruction of every item on the Target Set—in other words, they successfully sabotaged the plant.” (Lochbaum) The NRC report...   [tags: plants, safety, security, devastation]
:: 3 Works Cited
577 words
(1.6 pages)
Research Papers [preview]
Safety and Security in Odysseus Essay - ... After being welcomed, Odysseus tests Eumaeus about the palace by asking him who the king is. “[W]ho was the man who bought you. . . [w]hat’s his name?” (305) By asking Eumaeus this, Odysseus is able to acquire information about the suitors and Penelope. He needs to feel secure that Penelope is safe and that the suitors can be destroyed. Testing is necessary because Odysseus needs to feel safe and secure in this strange and new Ithaca. Having a need for security is a human condition that requires satisfaction....   [tags: Testing, Hero, Journey] 785 words
(2.2 pages)
Research Papers [preview]
Safety Manager Essay - Safety Manager Background The safety management profession in engineering was created for the purpose of managing risk through minimizing it to acceptable levels or eliminating it completely. Risk in engineering refers to the probability of occurrence of a failure, and the consequences of the failure. For instance, failure of engineering concepts or designs may result in property damage, injuries, fatalities, and even deaths. The probability of occurrence of failure in engineering is difficult to predict as it could be caused by operator errors, environmental effects, and mechanical failures....   [tags: safety engineering]
:: 7 Works Cited
1985 words
(5.7 pages)
Strong Essays [preview]