Availability Assessment of Computer Systems Described by Stiff Markov Chains: Case Study

2013 ◽  
pp. 112-135 ◽  
Author(s):  
Vyacheslav Kharchenko ◽  
Oleg Odarushchenko ◽  
Valentina Odarushchenko ◽  
Peter Popov
Keyword(s):  
Markov Chains ◽  
Computer Systems ◽  
Availability Assessment

A Methodology for Characterizing System-Level ESD Sensitivity

2004 ◽  
Author(s):  
Marie-Pascale Chagny ◽  
John A. Naoum
Keyword(s):  
Electrostatic Discharge ◽  
Computer Systems ◽  
Electronic Equipment ◽  
Experimental Methodology ◽  
Computer Users ◽  
System Level ◽  
Permanent Damage ◽  
Design Improvement ◽  
Desktop Computers

Abstract Over the years, failures induced by an electrostatic discharge (ESD) have become a major concern for semiconductor manufacturers and electronic equipment makers. The ESD events that cause destructive failures have been studied extensively [1, 2]. However, not all ESD events cause permanent damage. Some events lead to recoverable failures that disrupt system functionality only temporarily (e.g. reboot, lockup, and loss of data). These recoverable failures are not as well understood as the ones causing permanent damage and tend to be ignored in the ESD literature [3, 4]. This paper analyzes and characterizes how these recoverable failures affect computer systems. An experimental methodology is developed to characterize the sensitivity of motherboards to ESD by simulating the systemlevel ESD events induced by computer users. The manuscript presents a case study where this methodology was used to evaluate the robustness of desktop computers to ESD. The method helped isolate several weak nets contributing to the failures and identified a design improvement. The result was that the robustness of the systems improved by a factor of 2.

Decoding the Globe: Globalism, Advertising, and Corporate Practice

1997 ◽  
Vol 15 (1) ◽  
pp. 73-86 ◽  
Author(s):  
Patrick McHaffie
Keyword(s):  
Global Economy ◽  
Computer Systems ◽  
Symbolic Power ◽  
Space Program ◽  
Spatial Practices ◽  
Hewlett Packard ◽  
The Real ◽  
The Us ◽  
Corporate Practice

The current graphical rhetoric of advertising includes everything from images of the globe borrowed from the US space program (for example, Hewlett-Packard Corp. computer systems), to pseudotribal renderings of a very different sort [for example, Minute Maid's (The Coca Cola Co.) Fruitopia]. The use of these images are part of what Goldman calls the economy of ‘commodity signs’, where produced meanings are linked to commodities through the medium of the print or broadcast advertisement. The increased incorporation of global images in Western advertising presents an opportunity to analyze the ideological underpinning of the ‘new global economy’. The sheer volume of purchased advertising space places these often confusing images before our eyes at an increasing pace, producing meanings which tend to obfuscate and fetishize discourse related to globalism. A decoding of specific advertisements with the use of the Hewlett-Packard Corporation as a case study, juxtaposed against the real spatial practices of the company will reveal ruptures, contradictions, and incoherence in advertising messages which appropriate the symbolic power of global images.

scholarly journals AVAILABILITY ASSESSMENT SIMULATIONS FOR ALLOCATING HUMAN RESOURCES IN AIRSPACE CONTROL CENTERS

2013 ◽  
Vol 4 (1) ◽  
pp. 61-76
Author(s):  
Walter Nogueira Pizzo
Keyword(s):  
Human Resources ◽  
Simulation Model ◽  
Control Systems ◽  
Computer Systems ◽  
Service Level ◽  
Point Of View ◽  
Operations And Maintenance ◽  
Human Operators ◽  
Availability Assessment

Airspace control systems introduced automation into functions previously performed by human operators. This situation increased the dependence on the availability of computer systems, in which degraded operation events can reduce the service level at any controlled airspace. This paper presents a relationship between availability and allocation of human resources in these centers, where maintenance and operations personnel are occasionally asked to repair losses caused by automated functions. A simulation model for the Arena tool is presented, to access availability, and then the operational point of view is explored, focusing on the required availability scenarios. The results presented herein can help determine the size of operations and maintenance teams, considering the reliability and maintainability parameters of airspace control systems.

scholarly journals GIS-BASED INFECTIOUS DISEASE DATA MANAGEMENT ON A CITY SCALE, CASE STUDY OF ST. PETERSBURG, RUSSIA

2020 ◽  
Vol XLIII-B3-2020 ◽  
pp. 1463-1467
Author(s):  
I. Kuznetsov ◽  
E. Panidi ◽  
A. Kolesnikov ◽  
P. Kikin ◽  
V. Korovka ◽  
...  
Keyword(s):  
Infectious Diseases ◽  
Geographical Information Systems ◽  
Medical Data ◽  
Geographical Information ◽  
Infrastructure Development ◽  
Collection System ◽  
Medical Infrastructure ◽  
Availability Assessment ◽  
The City

Abstract. Medical geography and medical cartography can be denoted as classical application domains for Geographical Information Systems (GISs). GISs can be applied to retrospective analysis (e.g., human population health analysis, medical infrastructure development and availability assessment, etc.), and to operative disaster detection and management (e.g., monitoring of epidemics development and infectious diseases spread). Nevertheless, GISs still not a daily-used instrument of medical administrations, especially on the city and municipality scales. In different regions of the world situation varies, however in general case GIS-based medical data accounting and management is the object of interest for researchers and national administrations operated on global and national scales. Our study is focused onto the investigation and design of the methodology and software prototype for GIS-based support of medical administration and planning on a city scale when accounting and controlling infectious diseases. The study area is the administrative territory of the St. Petersburg (Russia). The study is based upon the medical statistics data and data collection system of the St. Petersburg city. All the medical data used in the study are impersonalized accordingly to the Russian laws.

An Analysis for a Precise Reliability and Availability Assessment of “Photovoltaic System” Pilot Site: a Case Study

2021 ◽  
Author(s):  
Fabio Leccese ◽  
Enrico Petritoli ◽  
Marco Cagnetti ◽  
Silvia Sangiovanni ◽  
Luca Podesta ◽  
...  
Keyword(s):  
Photovoltaic System ◽  
Pilot Site ◽  
Availability Assessment ◽  
Reliability And Availability

Robot Technology in the Shipyard Production Environment

1996 ◽  
Vol 12 (01) ◽  
pp. 39-48
Author(s):  
Svein I. Sagatun ◽  
Karl Erik Kjelstad
Keyword(s):  
Production Line ◽  
Material Flow ◽  
Emerging Technologies ◽  
Computer Systems ◽  
Current Status ◽  
Production Environment ◽  
Shipbuilding Industry ◽  
Component Line ◽  
Robot Technology

This paper presents the current status of robot technology in the shipyard production environment. The focus is on a case study in which a computer-integrated and robotized web and component line is presented. This production line will be fully operational by mid-1995. An overview has also been included of the most relevant technologies with regard to robot production in the shipbuilding industry, and how these technologies contributed to the introduction of robots in shipyards. The need for integrating the robots with the rest of the shipyard's material flow, computer systems and organization is discussed, followed by a brief survey of emerging technologies which may be useful for the shipbuilding community.

All the World's a Stage

2022 ◽  
pp. 394-413
Author(s):  
Brian S. Grant
Keyword(s):  
Computer Systems ◽  
Deliberate Practice ◽  
Practical Experience ◽  
Learning Model ◽  
Thought Process

This chapter provides a case study where a systematic, organized method of storytelling, presented as the Story-based Learning model, is used to design a series of integrated and engaging activities for cybersecurity training (to protect computer systems and networks) that fosters deliberate practice and improves performance. To address the talent shortage in the global cybersecurity workforce, the client developed a blended curriculum designed to provide practical experience to prospective cybersecurity professionals. A key component of this curriculum was the capstone exercises, activities focused on application of the content introduced in the courseware. Essentially, this is a story of using stories, one of humanity's oldest technologies, to solve the problem of training and cultivating expertise in future cybersecurity personnel. Based on solid prior evidence supporting the use of stories to increase engagement and retention, this case study focuses on detailing the thought process used to reach this set of solutions, as captured by the Story-based Learning model.

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