Operating System Fundamentals: Processes, Memory, Concurrency, Scheduling
Operating System Processes
Process View: The Illusion of Exclusivity
A process is essentially a running instance of a program. One of the key abstractions that the Operating System (OS) provides is the illusion that each process has exclusive access to the CPU and memory. However, in reality, the CPU and memory are shared among multiple processes.
How the Illusion is Created
- CPU Time Sharing: The OS rapidly switches between processes (context switching) so that it seems each process has its own CPU.
Mastering English Adverbs: Usage and Placement
Understanding Adverbs in English Grammar
The word adverb suggests the idea of adding to the meaning of a verb. It is the word class that usually provides extra information about the action in the sentence by modifying a verb, i.e., by telling us how, when, where, etc., something happens. E.g.: Paganini played the violin beautifully.
What Adverbs Modify
Besides verbs, adverbs can modify:
- Adjectives: very good, awfully hungry
- Other Adverbs: very soon, awfully quickly
- Nouns: The man here is a doctor.
- Determiners:
Literary Insights: Anand, Gardiner, Bacon’s Wisdom
The Parrot in the Cage: Plot & Symbolism
“The Parrot in the Cage” is a short story by Mulk Raj Anand, one of India’s most prominent writers in English. Known for his humanistic themes, Anand often explores injustice, suffering, and social realities in his works. This story is a symbolic and emotional monologue of a parrot, trapped in a cage and voicing its sorrow and longing for freedom. The story is a strong allegory for human suffering, particularly the suffering of women and those oppressed
Business Entity Types in Spain: SLNE, Civil, Labor
Sociedad Limitada Nueva Empresa (SLNE)
- Minimum partners: 1, maximum: 5.
- Minimum capital: €3,000, maximum: €120,000.
- After three years, it can convert to a standard SL.
- Offers tax incentives, such as deferring Corporate Income Tax (IS) for two years and tax deductions for workers.
- Other aspects are similar to a standard SL.
Civil Society (Sociedad Civil)
- Established under a private contract, simplifying procedures and reducing establishment costs.
- Profits attributed to each member are taxed under personal
The Immune System Explained: Defenses, Cells, and Immunity Types
The Human Immune System: Defenses and Responses
The immune system is responsible for the body’s defenses. Key organs include:
- Bone marrow
- Thymus
- Spleen
- Lymph nodes
- Peyer’s patches
- Tonsils
- Adenoids
Immune Barriers: The Body’s First Lines of Defense
Immunity is broadly categorized into two main types:
1. Nonspecific (Natural) Immunity
This constitutes the primary and secondary barriers, providing immediate, general protection.
a) External Barriers
- Physical: Skin (keratin), cilia in the bronchi.
- Chemical: pH of the
Essential Accounting Concepts, Principles, and Practices
Accounting Foundations: Concepts, Principles, and Conventions
Accounting Concepts (Assumptions)
- Business Entity: A business is considered separate from its owner.
- Going Concern: It is assumed that the business will continue operating indefinitely.
- Money Measurement: Only transactions that can be expressed in monetary terms are recorded.
- Accounting Period: The life of a business is divided into specific time periods (e.g., a fiscal year) for reporting.
- Accrual: Revenues and expenses are recognized when
Nietzsche’s Zarathustra: Reimagining Human Existence
Nietzsche’s Thus Spoke Zarathustra: A Philosophical Journey
This message draws from Nietzsche’s seminal work, Thus Spoke Zarathustra. Given Nietzsche’s critical stance towards religion, he chose Zarathustra—historically considered the first prophet to introduce religion to the world—as a central figure. The work’s ironic subtitle, “A Book for Everyone and No One,” positions it as a “fifth gospel” from the prophet Zarathustra. However, instead of celebrating the birth of God, it proclaims the
Read MoreMastering Written Communication: Text Types & Grammar Essentials
Textual Properties and Communication Principles
Suitability: Introduction to Textual Elements
Suitability refers to how well a text adapts to its context. Key elements include:
- Margins and Paragraphs: Proper formatting for readability.
- Bold and Italic Typeface: Effective use for emphasis.
- Spelling Rules: Adherence to linguistic legislation for credibility.
Textual Register: Adapting to Context
The register of a text depends on the issue, the channel, and the receiver. There are two main types:
- Formal Register:
Spain’s 19th Century Conflicts: Carlist War and Liberal Triennium
The First Carlist War (1833-1840)
Absolutist-friendly groups refused to recognize Isabel II as the legitimate successor to the throne and revolted against the government of Maria Cristina de Borbón. The rebels proclaimed Infante Don Carlos as king, thereby starting a civil war.
Opposing Factions and Ideologies
The traditionalist and anti-liberal Carlists encompassed part of the clergy, the gentry, and a peasant social base, representing a conservative and archaic society. The Regent Maria Cristina,
Read MoreLegal Systems, State Legitimacy, and Justice Principles
The Concept of Law
Law is a systematic set of principles and rules governing the relations among social members and with institutions, demanding certain behaviors to achieve a stable, orderly, and safe social life. It can be categorized as:
- Natural Law: A set of human rights, inherent to human nature. Some consider it timeless, immutable, and universal. Others believe that law is valid because it originates from the divine.
- Positive Law: A set of rules and laws created by human reason within a specific