Critical Systems: Reliability, Availability, and Safety in Software Engineering
Introduction
Familiarization with system failure
- Systems collapse without an apparent reason
- Failures can cause damage
- We take steps to overcome the lack of confidence
- Backups
The higher the confidence level, the higher the cost.
The greater the trust, the lower the performance.
- Verification of the states
- Disaster Recovery
Trust is sometimes more important than performance.
Critical Systems
When a failure may cause:
- Economic losses
- Physical or environmental damage
- Risks to human life
The cost of a system failure
Read MoreZara’s Strategic Direction & Competitive Challenges in the 21st Century
Company’s Response: The Strategic Direction
Concept of Strategy
There are multiple definitions of strategy, but its formulation is based on five basic ideas:
- Strategy is an ongoing relationship between the company and its environment.
- Strategy is a response to the expectations of stakeholders, which are specified in the definition of a mission and long-term goals.
- Strategy is a decision model that establishes policies, short-term objectives, actions, and allocation of resources needed to fulfill the
Strategic Planning in Administrative Processes: A Guide
Customer Guidance and Administrative Processes
What is the Administrative Process?
The administrative process involves several stages essential to the functioning of any organization. These stages are:
- Prevision: Research, objectives, alternate courses of action.
- Planning: Policies, procedures, programs, budget.
- Organization: Functions, hierarchies, obligations.
- Integration: People, resources, technologies.
- Direction: Authority, power, delegation, supervision.
- Control: Standards, assessment.
Administrative
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How Can We Help Disadvantaged Children Achieve High School Success?
The answers are within reach. Schools have demonstrated the ability to overcome environmental challenges and provide students with access to a quality education that fosters meaningful learning.
Effective Schools: A Qualitative Study
A comprehensive qualitative study examined a sample of schools that serve students living in poverty. These schools, in the latter half of the 1990s, achieved exceptional SIMCE scores, comparable to the
Read MoreProject Documentation: A Comprehensive Guide
1. Project Documents and Descriptions
- Report: Describes and justifies the project.
- Plans: Graphical representation of the project, defining the maximum level of detail. Used extensively on-site for execution.
- Specifications: Establishes the technical and economic conditions for project implementation.
- Budget: Reflects the projected cost.
2. Binding Documents
Plans and specifications are binding documents with a contractual basis, making them mandatory like a contract. The report and budget are not binding.
Read MoreSoftware Development Life Cycle Models and Methodologies
Evolutionary Model
This model focuses on early product delivery and continuous evolution. It’s suitable for systems expecting changes throughout their lifespan, where requirements are difficult to stabilize initially. The project cycle becomes the life cycle.
Disadvantages
- Lack of planning
- Poorly structured software production
- Difficult code modification due to premature system analysis
- Integration challenges with other applications
- Limited use in large systems due to change control complexity
- Not recommended