Notes, summaries, assignments, exams, and problems for Other courses

Competitiveness and Trade

Nominal Exchange Rates

When our currency's value increases, our competitiveness decreases, and importations increase in relative terms.

Price Levels

• Our Country: If prices in our country increase, our exports decrease, and imports increase.
• Foreign Country: If prices in foreign countries increase, our competitiveness increases, benefiting our exports, and our imports decrease.

Foreign Exchange Market

• Price Determination: The exchange rate between countries is established based on supply and demand.
• Hedging: Protection against currency fluctuations, safeguarding investors and businesses from losses due to currency appreciation or depreciation.
• International Finance: Countries can lend and borrow money by converting currencies.

Physical Decay and Familial Decline

From the story's outset, the Usher mansion is depicted as a structure in severe disrepair, with its "vacant eye-like windows," "minute fungi overspread the whole exterior," and an overall sense of decrepitude. This physical decay is not merely a backdrop but a direct representation of the Usher family's own decline. Just as the house is crumbling, so too is the family that inhabits it. Roderick Usher's acute mental distress and Madeline Usher's mysterious illness are symptomatic of a deeper, hereditary degeneration, reflecting the family's long-standing isolation and inbreeding.

The mansion's condition parallels the physical and mental ailments afflicting Roderick and Madeline. The narrative suggests that the...

Key Concepts in Language Acquisition and Child Development

Questions & Answers

1. According to Chomsky, language is... A (We possess an innate capacity for language.)
2. Which of the following statements is true? C (Learners need a supportive environment.)
3. Behaviorism relies on... A (Skinner's theory of operant conditioning.)
4. According to Krashen... C (Comprehensible input is important.)
5. According to constructivism... A (Children of a similar age think similarly.)
6. The term "concentration span" refers to... A (The time and capacity for focused attention.)
7. Comprehensible input means... B (The teacher uses facial expressions and gestures.)
8. Language acquisition does not require... D (All of the above.)
9. What is the zone of proximal development? A (The zone

Equity and Financial Concepts

Free Cash Flow (FCF)

FCF_t = EBIT + DEP - CAPEX - ΔWC - TAX

ΔWC = Δreceivables + Δinventories - Δpayables + Δother items

TAX = (EBIT-Y_t)*T = EBIT*T - Y_tT

FCFE = FCF_t - Y_t - PRINC_t

FCF_t^u = FCF_t - Y_tT

Y = k_dD₀ (interest paid is cost of debt*value of debt)

Standard WACC

k_s=(1-L)k_e + Lk_d(1-T) | Use Standard WACC with FCF_u | ITS is not included in both FCF_u & k_s | Need Constant Target Leverage Ratio (L)

k_e = reflects operating and financial risk faced by investors | k_u = unlevered cost of equity (if firm had no debt), reflects operating risk

V₀ = U₀ + I₀ (Enterprise Value = value of operations + value of ITS) | Leave space for Standard WACC equation if k_its = k_d OR k_its = k_u

Standard WACC model implicitly assumes k_its...

End of Isabel II's Reign and Political Unrest

In the final years of Isabel II's reign, political, economic, and social unrest spread throughout Spain.

Factors Leading to Isabel II's Downfall

• The economic crisis led to rural and urban revolts.
• Progressives, Republicans, and Democrats were excluded from the government and rejected the conservatism of the ruling powers.
• The bourgeoisie and the army distanced themselves from the regime due to its authoritarianism.
• The Queen grew increasingly unpopular.

The Pact of Ostend (1866)

In 1866, Progressives, Democrats, and Republicans signed the Pact of Ostend, in which they agreed to overthrow Isabel II and establish a democratic Spain. The Unión Liberal joined the pact in 1868.

The 1868 Revolution: La Gloriosa

In...

Database Query Processing: Steps and Cost Estimation

Query processing in a Database Management System (DBMS) involves several steps to transform a high-level query (such as an SQL query) into an efficient execution plan. Understanding these stages is crucial for database performance tuning.

Key Stages of Query Processing

The process typically follows these four major steps:

1. Parsing and Translation
2. Query Optimization
3. Evaluation/Execution Plan Generation
4. Query Execution

1. Parsing and Translation

Objective: Convert the SQL query into an internal representation, usually a parse tree or Abstract Syntax Tree (AST).

• The SQL query is checked for syntactic correctness.
• The SQL query is parsed into a parse tree.

Cost Estimation Techniques for Query Optimization

Cost...

Terminal and Log Command Examples

grep -i system /etc/passwd
grep -i ubuntu /etc/passwd
grep -i '*ubuntu*' /etc/passwd
grep -i "sync$" /etc/passwd
grep -E 'info|warn' /var/log/*log* && history | tail -n 2
Windows
findstr "*error*" C:\Windows\Logs\CBS\CBS.log
Select-String -Path "C:\Windows\Logs\dism\dism.log" -Pattern "2024-04 Manager"
findstr "^2024-01 | Manager" C:\Windows\Logs\DISM\dism.log
findstr /S /I /N "failed" C:\Windows\Logs\*.log
Get-EventLog -List
Get-EventLog -LogName System -Newest 25 | Format-List
wevtutil qe System /c:200 /rd:true /f:text | findstr /i "kernel"
wevtutil qe System /q:"*[System[TimeCreated[@SystemTime>='2023-09-01T00:00:00.000Z']]]" /f:text | findstr /i /c:"ProviderName: Disk"

Disk and Mount Commands

fdisk

English Exercises

Grammar

1 - D. 2 - B. 3 - B. 4 - D. 5 - A. 6 - C. 7 - B. 8 - B. 9 - A. 10 - B.

Vocabulary

• Get married
• Leave work
• Start school
• Settle down
• Have children
• Become a grandparent
• Grow up
• Pass away
• Retire from work
• Raise a family

Reading

1 - TRUE. 2 - FALSE. 3 - FALSE. 4 - TRUE. 5 - TRUE.

6 - TRUE. 7 - TRUE. 8 - FALSE. 9 - TRUE. 10 - FALSE.

Business Correspondence Examples

Business Loan Inquiry for a New Company

Subject: Business Loan Inquiry for My New Company

Dear Sir/Madam,

I hope this letter finds you well. I am writing to inquire about obtaining a business loan to finance my new company. Here are the details:

1. Business Type: I plan to start a small technology consulting firm specializing in providing IT solutions and services to local businesses.

Winston Churchill's Leadership During World War II

1. Early Challenges and Controversies

In fact, Churchill's job was to ensure the safe arrival of British merchant ships, which were hunted down by German U-boats. However, instead of listening to the key experts at the Navy, Churchill decided to seek out and attack the U-boats, leaving the merchant ships without protection. To convince the public that the British Navy was on top of the U-boat threat, Churchill publicly lied, claiming that the British Navy managed to sink half of the U-boats sent by Germany, while knowing for a fact that they had only sunk 9 out of 57 U-boats. When his claims were questioned or challenged by experts on German submarines, Churchill fired them. Churchill's ruthless...

1. Phone Call Vocabulary

Common Phrases

• Answer: responder
• Be careful: tener cuidado
• Break up: romper
• Caller: persona que llama
• Extension: extensión
• Get cut off: cortarse la llamada
• Hang up: colgar el teléfono
• Make a mistake: cometer un error
• Professional: profesional
• Put...on hold: poner en espera
• Put...through: pasar la llamada
• Repeat: repetir
• Ring: sonar
• Wrong number: número erróneo

2. Describing People

Personality Traits

• Angry: enfadado
• Friendly: amigable
• Funny: divertido
• Polite: educado
• Rude: maleducado
• Serious: serio

3. More Phone Call Phrases

Common Expressions

• Go out of the office: salir de la oficina
• Out of town: fuera de la ciudad
• Interference: interferencia
• Interrupt: interrumpir
• Leave a message: dejar un mensaje
• Leave a voicemail: dejar un mensaje de voz
• Line