Notes, summaries, assignments, exams, and problems

Project Roadmap: Decentralized Space Renting on Blockchain

Creating a blockchain-based decentralized space renting project involves understanding key concepts and technologies. Here's a roadmap:

1. Blockchain Fundamentals

• Learn about blockchain technology, its principles, and how it works.
• Understand blocks, transactions, consensus mechanisms (PoW, PoS), smart contracts, and decentralization.

2. Solidity Programming

• Solidity is key for Ethereum smart contracts.
• Learn its syntax, data types, control structures, and best practices.
• Understand deployment and interaction with smart contracts on Ethereum.

3. Ethereum Platform

• Study Ethereum, a leading platform for DApps.
• Learn about Ethereum wallets, nodes, gas fees, and the Ethereum Virtual Machine (EVM).

To eat up – consumir, tragar-se

To give up – abandonar o rendir-se

To cut back on sth – reduir o recortar algo

To work on – treballar-hi / tratar de convencer

To turn down – rechazar

To keep up with – seguir el ritme

It isn’t everyone’s cup of tea – No a todo el mundo le gusta

To bite off more than I can chew – Morder más de lo que puedo masticar

To stuff yourself with sth – Atiborrarse de algo

It’s food for thought – algo que haria de ser pensat o tenir en compte

a broken heart – cor trencat

a heart of gold – cor d’or

a hearty meal – buena comida

from the bottom of your heart – de tot cor

good-hearted – de buen corazón

hand on heart – con la mano en el corazón

the heart of the matter – el cor del tema

To meet up

What is Personality?

Personality refers to an individual's characteristic patterns of thinking, feeling, and behaving. Personality psychology seeks to understand how personality develops and influences behavior.

Major Approaches in Personality Psychology

• The psychoanalytic approach emphasizes the unconscious and early childhood experiences.
• The trait approach examines stable personality characteristics and traits.
• The biological approach studies how genetics, nerves, and neurotransmitters relate to personality.
• The phenomenological approach focuses on individuals' subjective experiences.
• Learning theories examine how experience and reinforcement shape personality.
• Cognitive theories look at how thoughts, beliefs, and expectations influence personality

Hello, we are going to talk about landslides. For us, this is really a massive natural disaster because it has a strong impact on all aspects, like the environment, the economy, and security. It is important to know about them because, basically, they can happen anywhere in the world. But first of all, what is a landslide?

Understanding the Causes of Landslides

It's important to understand the causes of this natural disaster because often people think that natural disasters are caused by supernatural forces. For example, in Mexico, some people believe that earthquakes happen in the month of September. Similarly, with landslides, some people think they are caused by a punishment from God or because Mother Nature is angry, but this is completely... Continue reading "Understanding Landslides: Causes and Impacts" »

Qualitative and Quantitative Variables

Qualitative: variables that are not numerical. They represent categories or groups that the data can fall into. Nominal: the categories do not have a natural order or ranking. The key characteristic of nominal variables is that the different categories are mutually exclusive and there is no inherent order to the categories. Ordinal: the categories have a logical or natural order. However, the distances between the categories are not necessarily meaningful.

Quantitative: variables that represent quantities and can be measured numerically. Discrete: a type of quantitative variable that can take on a countable number of distinct values. These are typically values that you can list or count. They often represent... Continue reading "Understanding Data Types and Sampling Methods" »

Theory of Computation

Automata Theory

Automata theory is a theoretical branch of computer science and mathematics that deals with the logic of computation using simple machines called automata. The main goal of automata theory is to develop methods for describing and analyzing the dynamic behavior of discrete systems. Automata consist of states (represented by circles) and transitions (represented by arrows).

Finite Automata

A finite automaton is an abstract computing device and a mathematical model of a system with discrete input, output, states, and a set of transitions between states that occur on input symbols from an alphabet. Finite automata are the simplest machines for pattern recognition, used to characterize regular languages, analyze... Continue reading "Theory of Computation: Automata, and Regular Expressions" »

Factors Affecting Reaction Rates

Concentration

Increasing the concentration increases the probability of a collision between reactant particles. With more particles in the same volume, collisions are more frequent, speeding up the reaction rate. Conversely, a lower concentration leads to fewer collisions and a slower reaction rate.

Surface Area

If a solid reactant or catalyst is broken down into smaller pieces, the rate of reaction increases. This is because smaller pieces of the same mass have a greater surface area, providing more opportunities for reactant particles to collide with the surface and react.

Types of Rate Laws

Differential Rate Law: Describes how the rate of a reaction depends on the concentration of reactants (often simply called... Continue reading "Factors Affecting Reaction Rates and Rate Laws" »

1. The Canovas System and Its Foundations

1.1. Bases of the Canovas System

Cánovas' ideology drew inspiration from French doctrinal liberalism and Spanish moderatism. He advocated for a British-style system based on bipartisanship, where the Conservative Party and the Liberal Party would alternate in power and opposition.

This bipartisanship excluded Carlists and Republicans from the political system.

The intended peaceful alternation of power under Cánovas' system did not work as expected and became a facade. Both parties used pacts and a tacit agreement based on:

• Peaceful transfer of power
• Calling elections
• Electoral fraud

Electoral fraud involved caciquismo, encasillado, and pucherazo. Caciquismo refers to a pyramidal patronage network where high-... Continue reading "Understanding Spain's Political System: From the Canovas System to Opposition Movements" »

Franz and the Last Lesson

Franz's Expectations and Regrets

Q. What was Franz expected to be prepared with for school that day?

Franz was expected to be prepared with his lesson on participles, as announced by his French teacher, M. Hamel. However, Franz hadn't studied them.

Q. Why did Franz want to spend his day out of doors?

Franz was tempted by the beautiful weather and the allure of nature, contrasting with the confinement of the classroom.

Q. Why did Franz repent?

Franz repented because he realized the value of education and the importance of his native language, which he had taken for granted.

M. Hamel's Perspective

Q. What are M. Hamel's views about the French language?

M. Hamel cherished the French language, considering it the most beautiful language... Continue reading "Understanding "The Last Lesson": A Q&A Exploration" »