Piaget – kenning um vitsmunaþroska :
Skynhreyfistig = skynjun + hreyfingar
Foraðgerðastig = táknrænan hugsun + sjálflægni
Hlutbundið stig = hugsun um raunverulega + áþreifanlega hluti
Stig formlegra aðgerða = Abstrakt hugsun + rökhugsun
NOAM CHOMSKY - Börn með meðfædda málhæfni
Skapgerðarsnið :
Sjálfstjórn – stjórna tilfinningum, athygli og róa sig niður
Neikvætt skaplyndi – upplifa oft ótta, reiði
...E-commerce (electronic commerce) refers to the buying and selling of goods or services over the internet, categorized into four primary models—B2B, B2C, C2C, and C2B—based on the parties involved.
These models form the backbone of the modern digital economy, driving global trade, consumer convenience, and new income streams.
Primary Types of E-Commerce
.Business-to-Business (B2B)Definition: Transactions conducted between two businesses, such as a manufacturer and wholesaler, or a wholesaler
In developmental biology, the journey from a stem cell to a specialized tissue involves a series of progressive "decisions" and physical changes.
### 1. Competence, Determination, and Differentiation
These three concepts describe the "identity crisis" a cell goes through as it matures.
#### **Competence**
Competence is a cell's **ability to respond** to a specific developmental signal or "inducer." It is a state of readiness.
* **The Mechanism:** For a cell to be competent, it must have the necessary
In evolutionary biology, changes occur at different scales and timeframes. These scales—micro, macro, and mega-evolution—describe the hierarchy of biological change from a single gene to the development of entirely new body plans.
### 1. Micro-evolution
Micro-evolution refers to small-scale changes in **allele frequencies** within a single population over a relatively short period (a few generations). These changes do not result in a new species but rather adaptations within the existing one.
*
Liquidity risk, credit risk, and interest rate risk are three major risks faced by commercial banks. These risks are closely connected, meaning that problems in one area can quickly affect another area. Liquidity risk refers to the possibility that a bank may not have enough cash or liquid assets to meet withdrawal demands and payment obligations. Credit risk refers to the possibility that borrowers may fail to repay loans according to agreed terms. Interest rate risk refers to the possibility that...
## Evolution: Origins, Theories, and Mechanisms
Evolution explains the gradual changes in populations over time, leading to the vast diversity of life on Earth. It ranges from the molecular origins of the first cells to the large-scale formation of new species.
### 1. Origin of Life and Organic Evolution **Origin of Life:** The most widely accepted theory is the **Oparin-Haldane Hypothesis** (Chemical Evolution), which suggests life arose from inorganic molecules in a "primordial soup." This was experimentally
Interest rate risk is one of the most important risks faced by commercial banks because changes in market interest rates directly affect profitability and net interest income. One of the most common methods used to manage this risk is the repricing model, also called the GAP model. The repricing model measures the difference between rate-sensitive assets (RSA) and rate-sensitive liabilities (RSL) over a specific period of time. Rate-sensitive assets are assets whose interest rates can change or...
## Developmental Biology: Overview and Early Stages
Developmental biology explores the journey from a single cell (the zygote) to a complex, multi-cellular organism. It integrates genetics, molecular biology, and morphology to understand how tissues and organs form.
### 1. Historical Perspectives, Aims, and Scope
* **Historical Perspective:** The field evolved from **Epigenesis** (the idea that organs form step-by-step from an unorganized egg) vs. **Preformationism** (the debunked belief that a miniature
Dadaism1916 during World War I. Dada artists were angry @ society, politics, & traditional culture coz dey believed “reasonable” society had led 2 war.-strange, random, shocking, or anti-art. uses nonsense, chance, collage, readymade, & humor.Post-Impressionism. 1800s, after Impressionism. Artists still used bright color & visible brushstrokes, more emotion, structure, symbolism, & personal meaning than Impressionism.Futurism early 20th-century Italian art movement dat celebr8d
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