Notes, summaries, assignments, exams, and problems for Primary education

The Naturalists' View on Meaning

Ancient Greek philosophers who advocated this position viewed naming as a natural relationship between the signs and what these signs signified. They thought that the form of words was thus related to their meaning. This relationship was said to emanate from rigidly fixed inviolable principles on which man had no control.

The existence of a number of onomatopoeic words in natural languages, that is, words whose phonetic form is an imitation of the original sound they refer to such as cuckoo, splash, crush, and hoot in English, backed up the view held by the naturalist school.

The Conventionalists' View on Meaning

Greek philosophers who argued for the conventionalist explanation viewed the relationship of naming... Continue reading "Semantic Theory: Naturalists vs. Conventionalists" »

… Δ Qd Y1

EY = --------- × ---------

Δ Y Q1

…perfectly (or infinitely) elastic:

the extremely elastic situation of demand or supply where quantity changes by an infinite amount in response to any change in price; horizontal in appearance

perfectly inelastic:

the highly inelastic case of demand in which a percentage change in price, no matter how large, results in zero change in the quantity; thus, the price elasticity of demand is zero; vertical in appearance

(relatively) elastic:

the percentage change in quantity demanded is greater than the percentage change in price; measured price elasticity of demand is greater than one (in absolute value)

(relatively) inelastic:

the percentage change in quantity demanded is less than the percentage... Continue reading "Understanding Elasticity of Demand and Revenue in Economics" »

Elasticity

Elastic demand: A high responsiveness of quantity demanded or supplied to changes in price.

Elasticity: An economics concept that measures the responsiveness of one variable to changes in another variable.

Inelastic demand: A low responsiveness by consumers to price changes.

Necessities vs. Luxuries

Necessities tend to have inelastic demands, whereas luxuries have elastic demands.

Short Run Versus Long Run

Price elasticity of demand is usually lower in the short run, before consumers have much time to react, than in the long run, when they have a greater opportunity to find substitute goods. Thus, demand is more price elastic in the long run than in the short run.

Competitive Dynamics

Goods that can only be produced by one supplier generally... Continue reading "Price Elasticity of Demand and Supply: Formulas and Examples" »

Horario General del Grupo:

Ciclo: , Año Actual

Detalles del Periodo Principal

Nota: El valor de "Fin" para este periodo general no está explícitamente definido.

Horarios por Patrones

A continuación, se detallan los horarios específicos definidos por patrones.

Horario del Grupo:

Ciclo: , Año Actual

Detalles de Horas por Patrón

English Irregular Verbs

Irregular Verbs

Social Groups

The growth of cities transformed the organization of feudal society. Many artisans and traders were not dependent on the feudal lords. This group was the bourgeoisie.

Verb Phrases

• Buy a newspaper: comprar un periódico
• Call a taxi: llamar a un taxi
• Dance the tango: bailar el tango
• Draw a picture: dibujar una imagen
• Find a parking space: encontrar una plaza de aparcamiento
• Give somebody flowers: darles flores a alguien
• Hear a noise: oír un ruido
• Help somebody: ayudar a alguien
• Leave your bag on a train: dejar tu bolso en un tren
• Meet a friend: conocer a una amiga/amigo
• Paint a picture: pintar un cuadro
• Look for your keys: buscar tus llaves
• Remember somebody's name: recuerda el nombre de alguien
• Run a race: correr una carrera
• See a film: ver una película
• Send a text message: enviar un mensaje de texto
• Sing a song: cantar una canción
• Swim in the sea: nadar en el mar
• Take a photo: tomar una foto
• Talk to a friend: hablar a un

Present Value Calculation

Present Value Calculation: The present value method has multiple applications in finance and refers to today’s value for a stream of future cash flows. Positive cash flows are called cash inflows and negative cash flows are called cash outflows.

The present value (PV) formula can be written as follows:

Where k is the discount rate and the expression is called the discount factor.

Net Present Value (NPV)

Net Present Value: It is defined as the difference between the present value of the future cash flows generated by the investment and the initial cash outlay.

Internal Rate of Return (IRR)

IRR: It is defined as the discount rate that makes the present value of future cash flows equal to the initial investment outlay. The... Continue reading "Financial Valuation Methods and Cost of Capital" »

Decision Making and Problem Solving

Defining the Process

Problem Solving: Identifying the difference between the actual and desired state of affairs, and taking action to resolve the difference.

Decision Making: Defining the problem, identifying alternatives, determining criteria, evaluating alternatives, and choosing an alternative.

Types of Decision Problems

Single-Criterion Decision Problem: Finding the best solution based on one criterion.

Multicriteria Decision Problem: Finding the best solution considering multiple criteria.

Key Concepts in Decision Making

Decision: The selected alternative.

Model: A representation of a real object or situation.

• Iconic Model: A physical replica of a real object.
• Analog Model: A physical representation, but doesn'