Notes, summaries, assignments, exams, and problems for University

Regarding the difference between a language and a dialect can be confusing. A language is a mental phenomenon, the language lives in the mind because it is a cognitive ability. However, a dialect is a certain type of linguistic variety. It is the way of speaking of a community which is a bit different from the standard one. One problem is dialectal continuum:

The distinction is very broad. If we ask how many languages there are, we will not have an exact answer because there are over 4000 and 6000 languages. It is difficult to say which is a language or which is not. The word 'language' is a concept more political than scientific, the decision in the end is political. For example, the Swedes, Danish, and Norwegians speak highly similar linguistic... Continue reading "Language vs Dialect: Power Dynamics and Societal Influence" »

The Rise of Mesopotamian Civilization

On the banks of the Tigris and Euphrates rivers, the main urban settlements that were to play a leading role in the three millennia of Mesopotamian history emerged. The periodic overflowing of their banks irrigated and enriched the surrounding land, allowing intensive agricultural exploitation. This favored the appearance of stable settlements and their development. Cities such as Uruk, Ur, Lagash, Assur, Mari, and Babylon, among many others, arose, governed independently from a temple-palace.

Mesopotamian Society and Governance

The temple-palace organized the economy and held the political and military monopoly, as it was where the production and surplus from their economic activities were stored. Society... Continue reading "Mesopotamian Civilization: Society, Economy, Religion" »

C Programming Examples

Here are several C programming examples:

Vector Operations

#include <stdio.h>

void leVetor (int v [] , int tam );
int prodEscalar (int v1 [] , int v2 [] , int tam );

int main (void) {
    int v1 [ DIM ], int v2 [ DIM ];
    int i;
    int prod ;

    leVetor (v1 , DIM );
    leVetor (v2 , DIM );
    prod = prodEscalar (v1 , v2 , DIM );
    printf ("%d\n", prod );
    return 0;
}

void leVetor (int v [] , int tam ) {
    /* Completar */
}

int prodEscalar (int v1 [] , int v2 [] , int tam ) {
    /* Completar */
}

Random Number Generation

#include <stdio.h>
#include <time.h>
#include <stdlib.h>

#define VEZES 10

int main (void) {
    int i , j , k;
    double r;

    srand ( time ( NULL )); /* inicializa

... Continue reading "C Programming Examples: Code Snippets and Explanations" »

Anchoring to Previous Knowledge

Anchoring to previous knowledge is important because learners' prior knowledge is the starting point for building new learning. Existing knowledge consists of content, language, attitudes, opinions, and experiences related to the topic under study.

The relational links are the glue that fixes learning in memory. The CLIL teacher can intensify the learners' brain connections by promoting the activation of the knowledge that the learners already possess.

Higher-Order Thinking Skills (HOTS)

The acronym HOTS stands for Higher-Order Thinking Skills. Teachers who ask "higher-order" questions promote learning; these questions require students to apply, analyze, synthesize, and evaluate information, rather than simply recalling... Continue reading "Effective CLIL Strategies: Anchoring Knowledge and HOTS" »

The seismic waves produced by the detonation of an explosive charge or any other system are transmitted through the Earth in the form of vibrations or waves that travel at different speeds. These speeds are influenced by several factors, including lithology, depth, porosity of the material, compaction, lithification, and fluid content, among others. Furthermore, these speeds depend on the elastic modulus and density. These parameters are essential for velocity analysis in the interpretation of seismic data. Below is a table showing the propagation speeds of seismic waves; these values specifically refer to longitudinal waves (P-waves).

Material	Velocity (V) [m/s]
Weathering layer	300–900
Modern alluvium	350–1,500
Clays	1,000–2,000
Marls	1,800–3,

... Continue reading "Seismic Wave Velocity in Various Rock Types" »

Theory of Indifference Curves

Developed by Prof. Thomas S. Alvarez

ECONOMICS AND INDUSTRIAL ORGANIZATION I

Indifference Curves

The table below shows points in four different indifference curves for a consumer.
(a) Draw the indifference curves I, II, III, and IV on the same set of axes.
(b) What are indifference curves?

I II III IV
Qx Qy Qx Qy Qx Qy Qx Qy
2 13 3 12 5 12 7 12
3 6 4 8 5.5 9 8 9
4 4.5 5 6.3 6.3 8.3 9 7
5 3.5 6 5 7 7 10 6.3
6 3 7 4.4 8 6 11 5.7
7 2.7 8 4 9 5.4 12 5.3

(a)

(b) Indifference curves graphically display the tastes and preferences of consumers (in the analysis of utility, the total utility curve introduced consumer tastes). The consumer is indifferent to all the various combinations of X and Y on the same indifference curve... Continue reading "Indifference Curves, Budget Lines, and Consumer Equilibrium" »

The Cartagena Manifesto of 1812

The Cartagena Manifesto (15 December 1812) is the first of Bolivar's capital documents. It was written by Bolivar when he was twenty-nine years old; there is a palpable quality that was remarkable in the statesman. He analyzes the causes of the collapse of the First Republic and proposes a strategy that seemed to materially result in the attack which crystallized in the Second Republic, formed after the epic of the Admirable Campaign.

The Prophetic Letter from Jamaica of 1815

In the Letter from Jamaica (6 September 1815), there appears the penetrating intelligence of Bolivar showing prophetic gifts. There is nothing of the magician or sorcerer; it is the straight and accurate view of a coherent political mind with... Continue reading "Simon Bolivar's Political Legacy and Key Documents" »

Understanding Adverbial Clauses

Clauses of Time

They are often introduced by subordinators such as after, before, since, until, when, while, as soon as, and once.

Example: When I first met you, you were still studying.

Clauses of Place

They are introduced by where or wherever.

Example: They always went for their holidays wherever they could afford to go.

Clauses of Condition and Concession

This category includes two related types:

• Conditional Clauses: These express the dependence of one set of circumstances on another.

Example: If you are late, I will have gone away.

Concessive Clauses: These imply a contrast between two circumstances; the main clause is surprising in light of the subordinate one.

Example: Although I was late, she waited for me.

Specific

... Continue reading "Mastering Adverbial Clauses: Types, Subordinators, and Usage" »

Understanding Assembly Language

Assembly language is a low-level programming language where instructions are written using mnemonic codes rather than binary machine language. An assembler translates these instructions into executable machine code.

Classification of Assembly Instructions

Assembly language instructions are categorized into three primary types:

• Imperative Statements (IS): Specify operations for the processor to perform. These generate executable machine code. Examples include: STOP, ADD, SUB, MULT, MOVER, MOVEM, COMP, BC, DIV, READ, and PRINT.
• Declarative Statements (DL): Used for memory allocation and data definition. DS (Define Storage) reserves memory locations, while DC (Define Constant) stores a constant value in memory.
• Assembler

... Continue reading "Understanding Assembly Language: Instructions and Assemblers" »

Material Properties and Heat Treatment

• 2.1: Toughness
• 2.2: 14 × 10⁴, 90 × 10⁴
• 2.3: Stiffness
• 2.4: Toughness
• 2.5: Hardness
• 2.6: Malleability
• 2.7: 3–4% Carbon
• 2.8: Grey cast iron with ultimate tensile strength 300 N/mm²
• 2.9: Plain carbon steel (0.35–0.45% C, 0.7–0.9% Mn)
• 2.10: Mild steel
• 2.11: Less than 0.3% carbon
• 2.12: Sulphur
• 2.13: Chromium
• 2.14: Chromium
• 2.15: Above upper critical temperatures, cooled in still air
• 2.16: Case-hardening
• 2.17: Cyaniding
• 2.18: Case-carburising

Manufacturing and Tolerances

• 3.1: Aluminium
• 3.2: Fibre lines arranged in a predetermined way
• 3.3: Very small fillet radius
• 3.4: Easy removal of forged part from die cavities
• 3.5: Tolerances given on both positive and negative sides
• 3.6: Tolerance zone of hole and shaft overlap
• 3.7:

... Continue reading "Mechanical Engineering Design: Key Concepts and Formulas" »