A longitudinal study of information system threat categories

2005 ◽  
Vol 36 (4) ◽  
pp. 68-79 ◽  
Author(s):  
Ghi Paul Im ◽  
Richard L. Baskerville
Keyword(s):  
Information System ◽  
Longitudinal Study ◽  
Threat Categories ◽  
System Threat

An Evaluation Method for Information Security Level Based on OWA Operator and Bayesian Network

2013 ◽  
Vol 411-414 ◽  
pp. 72-75
Author(s):  
Ke He Wu ◽  
Shi Chao Ye ◽  
Yu Guang Niu
Keyword(s):  
Information System ◽  
Information Security ◽  
Bayesian Network ◽  
Threat Assessment ◽  
Objective Evaluation ◽  
Assessment Model ◽  
Owa Operator ◽  
Security Threat ◽  
Threat Level ◽  
System Threat

Analysis of information security threats in the system elements and assessment process, the decision-maker's subjective judgment threat level information and to obtain an objective evaluation by testing different forms of information and data, it is difficult for a direct threat assessment, proposed based on Bayesian network and OWA operator information security threat assessment model. First, combined with expert knowledge Bayesian network inference rules introduced conditional probability matrix, in order to build an information security threat assessment model. Secondly, based on OWA operator build the expert group decision making information system threat level of the target's subjective judgment information, and as a Bayesian network model of the target information system threat level of a priori information, and objective evaluation of information as a shell Julius observation node network model, which integrates the subjective and objective information security threat level. Finally, a simulation example shows that the model is reasonable and effective.

A Symbiotic Model for Information Systems Success Determination

2012 ◽  
pp. 1-22
Author(s):  
Kieren Jamieson
Keyword(s):  
Information System ◽  
Information Systems ◽  
Longitudinal Study ◽  
Single Point ◽  
The Other ◽  
Power Relationship ◽  
Enterprise System ◽  
Implementation Success ◽  
Information Systems Success ◽  
Traditional Approaches

Traditional approaches to identifying and measuring Information Systems success or failure typically suffer from two deficiencies. First, the measures are taken at a single point in time, usually shortly after the system adoption with a focus on the implementation “success.” Second, the focus is purely on the organisational net gain or loss. The organisation is treated as a single entity, and the Information System itself is relegated to a subservient cog. The power relationship between the organisation and the Information System is left unexplored: in other words, which entity controls the other? This chapter proposes and demonstrates an alternate categorisation model that addresses both deficiencies. The model is applied to a longitudinal study of an implementation of an enterprise system in order to both categorise and explain the outcomes for the host organisation.

School Achievement and Adult Qualifications among Adoptees: A Longitudinal Study

1998 ◽  
Vol 39 (5) ◽  
pp. 669-685 ◽  
Author(s):  
Barbara Maughan ◽  
Stephan Collishaw ◽  
Andrew Pickles
Keyword(s):  
Longitudinal Study ◽  
School Achievement

A Longitudinal Posthumous Study of Letter Writing in a Late Elderly Case

2015 ◽  
Vol 20 (1) ◽  
pp. 22-33
Author(s):  
Angel Ball ◽  
Jean Neils-Strunjas ◽  
Kate Krival
Keyword(s):  
Longitudinal Study ◽  
Elderly Woman ◽  
Semantic Content ◽  
Cognitive Status ◽  
Letter Writing ◽  
Linguistic Performance ◽  
Errors Analysis ◽  
Normal Status

This study is a posthumous longitudinal study of consecutive letters written by an elderly woman from age 89 to 93. Findings reveal a consistent linguistic performance during the first 3 years, supporting “normal” status for late elderly writing. She produced clearly written cursive form, intact semantic content, and minimal spelling and stroke errors. A decline in writing was observed in the last 6–9 months of the study and an analysis revealed production of clausal fragmentation, decreasing semantic clarity, and a higher frequency of spelling, semantic, and stroke errors. Analysis of writing samples can be a valuable tool in documenting a change in cognitive status differentiated from normal late aging.

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