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

ALOS: Average Length of Stay

Total occupied room nights/total bookings

Attrition

Difference between the number of rooms reserved compared to the number of rooms used

Booking Curve

An important tool for yielding that provides a visual representation of the pickup, number of bookings, availability, and yielding capacity of the hotel over time

Pick Up

No. of reservations between today & day of arrival

Contract

>30 nights + large volume

Group

>10 rooms, contract, deposit

• Corporate: Negotiated rate for a block with a specific company
• Association/Convention: Negotiated rate for a block with trade, professional, philanthropic association
• Government: Negotiated rate for a block with a qualifying government agency

Transient

Ind & groups

• Retail: Market

A Composite Map of Social Class in the U.S.

The upper class
Wealthiest Americans earning more than $180,800 a year, owning large suburban homes, driving new luxury cars. Wealth comes from investment income (usually). About 5% of all American households.
The upper middle class
Well-off professionals, such as doctors, lawyers, professors, with incomes ranging from about $100,000 to about $180,000 or so. About 15% of all American households.
Lower Middle Class
Skilled services, office workers, skilled craftsmen, with household incomes from about $38,000 to about $100,000. About 40% of American households.
Working Class
Factory workers, mechanics, office workers, etc. About 20% of American households. Income from about $20,000 to $38,000.
The lower class
People... Continue reading "Social Class in the U.S.: Inequality, Mobility, and Gender" »

WEEK 1: Software that Manages Computer Hardware

Operating System as an Abstract Machine, Service Provider, and Resource Manager. OS Objectives: Convenience, Efficiency, and Ability to Evolve.

Performance Indices

Arrival Time, Service Time, Turnaround Time, Normalized Turnaround Time. First-Come-First-Served (FCFS) Scheduling Policy.

Microprocessor and DMA Activity

Impact of Microprocessor Bus Configuration and DMA Activity on System Speed.

Memory System and Cache

Cache and Main Memory Access Time, Average Access Time Calculation.

iOS and Android

Similarities and Differences between iOS and Android.

Job Execution and CPU Utilization

CPU Utilization for Uniprogramming and Multiprogramming.

Direct Memory Access (DMA)

Coordination, Memory Operations Completion,... Continue reading "Understanding Operating Systems: Functions, Performance, and Multithreading" »

Computer Network and Its Types

A network refers to a collection of interconnected nodes or entities that can communicate and share information with each other. These nodes can be computers, devices, or even people. Networks are used to facilitate the exchange of data, resources, or services among the connected entities.

Types of Networks

There are several types of networks, including:

• Local Area Network (LAN): LANs are typically limited to a small geographic area, such as a home, office, or campus. They are used for connecting devices within a relatively close proximity, often using Ethernet cables or Wi-Fi.
• Wide Area Network (WAN): WANs cover larger geographical areas and connect LANs over long distances. The internet is the most extensive example

PL/SQL

PL/SQL is a procedural language designed specifically to embrace SQL statements within its syntax. PL/SQL program units are compiled by the Oracle Database server and stored inside the database. And at run-time, both PL/SQL and SQL run within the same server process, bringing optimal efficiency. PL/SQL includes procedural language elements like conditions and loops. It allows declaration of constants and variables, procedures and functions, types and variable of those types and triggers. It can support Array and handle exceptions (runtime errors).

Differences between SQL and PL/SQL

• SQL is a single query that is used to perform DML and DDL operations.
• PL/SQL is a block of codes that used to write the entire program blocks/ procedure/ function,

What is Arbitration?

Arbitration is a legal process used to resolve disputes between parties outside of the traditional court system. It is a form of alternative dispute resolution (ADR) in which the parties involved in a dispute agree to have a neutral third party, known as an arbitrator or arbitral tribunal, make a binding decision to settle their dispute. Arbitration is often chosen as an alternative to litigation for various reasons, including its potential for faster resolution, greater privacy, and lower costs compared to going to court.

Key Elements of Arbitration:

1. Voluntary Agreement: Arbitration is typically based on the voluntary agreement of the parties involved. They may choose to arbitrate a dispute either before or after a dispute

Bronfenbrenner: Social/Bio Ecological NO STAGES

The Russian Nesting Doll

Used in the classroom and everyday life

Ignores the roles of cognition and is hard to back up with research

Microsystem:

The people and objects in an individual's immediate environment

Mesosystem:

Connections between microsystems

Exosystem:

Social settings that a person may not experience firsthand but that still influence development

Macrosystem:

Consists of cultural values, laws, customs, and resources

Connected to Piaget

Piaget: Cognitive STAGES

Jaffa Cakes, water beaker, coins

Underestimating children abilities, impact of culture

Sensorimotor:

Birth to 2 years, during which infants know the world mostly in terms of their sensory impressions and motor activities

Preoperational:

2 to 7... Continue reading "Developmental Theories: A Comparison of Bronfenbrenner, Piaget, Vygotsky, Erikson, and Kohlberg" »

How does Chimamanda define 'the single story'?

She defines 'the single story' as the tendency to reduce individuals or groups to a single narrative or perspective, often based on stereotypes, preconceived notions, or limited information. A single story shows a group of people as one thing and only one thing over and over again until that is what they become.

Name four 'single stories' that she discusses in this talk

Chimamanda's roommate who had a single story of Africa. She had a single story of catastrophe. In this single story, Africans weren't similar to her at all. She just felt pity for them. She stereotyped Chimamanda as a woman who shouldn't know how to speak English, listened to tribal music, and not well-known authors...

Chimamanda's... Continue reading "Chimamanda Ngozi Adichie: The Danger of Single Stories" »

Core Concepts in Organic Chemistry

Nucleophilic Substitution Reactions

SN1 Reaction: Unimolecular Substitution

SN1 stands for Substitution Nucleophilic Unimolecular reaction. It proceeds in two steps:

1. Slow Step: Dissociation of the substrate to form a carbocation intermediate.
2. Fast Step: The carbocation combines with the attacking nucleophile.

Characteristics of SN1 reactions:

• More stable carbocation leads to a faster reaction.
• Favored by polar solvents.
• Mostly given by tertiary alkyl halides.
• Occurs with racemization.
• Follows 1st-order kinetics: Rate = k[R-X].

SN2 Reaction: Bimolecular Substitution

SN2 stands for Substitution Nucleophilic Bimolecular reaction. It proceeds in a single step, which is the rate-determining step.

Characteristics of SN2 reactions:... Continue reading "Essential Concepts in Organic Chemistry: Reactions and Mechanisms" »

Causes and Consequences of the German Mark Hyperinflation

Why did the German Mark inflate so rapidly?

The German Mark inflated so rapidly primarily due to the immense cost of the war against France. Germany was forced to borrow significant amounts of money, leading to a loss of financial control and subsequent hyperinflation.

Why did France demand that Germany repay their debt in foreign currency?

France demanded that Germany repay its debt in foreign currency because the French populace was upset following the conflict. Consequently, France, with the help of its allies, set terms of surrender requiring Germany to make payments totaling billions in dollars.

Understanding Monetary Value and Economic Lessons

What is one lesson that can be learned from