Notes, summaries, assignments, exams, and problems

Chapter 20: Evaluation

Critical Thinking and Evaluation

Critical thinking is how a nurse gathers patient data from nursing diagnoses to develop a plan of care and implement interventions. Evaluation, the final step of the nursing process, determines whether the patient's condition or well-being improves after applying the nursing process. Nurses apply their knowledge and previous experiences to evaluate the effectiveness of nursing care.

Evaluative Measures vs. Assessment

Assessment identifies existing problems, while evaluation determines if those problems have remained the same, worsened, or changed.

Importance of Evaluative Measures

Using the right evaluative measures increases the likelihood of accurately identifying changes in the patient's... Continue reading "Effective Nursing Evaluation: Critical Thinking & Patient Outcomes" »

Why Online Shopping Is the Superior Way to Shop

In the modern age of convenience and technology, online shopping has become an increasingly popular way to shop. It stands out as the best method for several compelling reasons:

• Vast Selection: The array of products available at our fingertips is unparalleled. Whether you're looking for the latest fashion trends, rare collectibles, or everyday essentials, online stores offer a seemingly endless selection.
• Effortless Comparison: The ease of comparison shopping allows consumers to find the best deals and prices, often with just a few clicks. This not only saves money but also significant time and effort.
• Unmatched Convenience: Shopping from the comfort of your own home, avoiding crowded stores and long

Internet Technologies

The internet relies on several key technologies:

• Transmission Control Protocol (TCP): Enables connections and data exchange between hosts.
• Internet Protocol (IP): A unique 32-bit numeric address for each computer, represented by four numbers (0-255) separated by periods.
• Domain Name System (DNS): Converts domain names (e.g., google.com) to IP addresses.
• Hypertext Transfer Protocol (HTTP): The standard for transferring web pages.
• Hypertext Markup Language (HTML): Formats documents and links to other resources.
• Uniform Resource Locator (URL): References a web resource's location and retrieval method.

Cloud Computing

Cloud computing provides access to shared computing resources over a network. Different service models exist:

• Software

Ionic Bonding

Bonding between a non-metal and a metal where electrons are transferred from the metal to the non-metal. This results in the non-metal forming a negative ion and the metal forming a positive ion. The structure is a giant ionic lattice with strong electrostatic forces between ions. A lot of energy is needed to break these forces, resulting in high melting and boiling points. Ionic compounds conduct electricity when aqueous or molten, as the ions are free to move around. They can be represented using dot and cross diagrams.

Covalent Bonding

Bonding between two non-metals. Covalent compounds do not conduct electricity as there are no charged particles. Small molecules are liquids or gases at room temperature due to weak intermolecular... Continue reading "Chemical Bonding and Structure" »

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" »

Photosynthesis and Cellular Respiration

Photosynthesis

Photosynthesis is the process by which plants convert carbon dioxide and water into glucose and oxygen, using light energy. This endothermic reaction can be summarized by the following equation:

6CO₂ + 6H₂O -> C₆H₁₂O₆ + 6O₂

The rate of photosynthesis is influenced by several factors, often referred to as limiting factors. These include:

• Light intensity: Increased light levels generally lead to a higher rate of photosynthesis until an optimum level is reached.
• Carbon dioxide concentration: Higher levels of carbon dioxide can enhance the rate of photosynthesis, up to a certain point.
• Temperature: Plants in their ideal temperature range perform photosynthesis more efficiently than those outside

Standard Form/Scientific Notation

If you had a number like this:

54300000.0

Then you would have to make the number so it is under 10:

5.4300000

But you moved the decimal place 7 places to the left, so the standard form is:

5.43 x 10⁷

HINT

Recurring decimals are written with a little dot or a line above a number to show that it goes on forever.

HINT

Terminating decimals are decimals that eventually stop and are not recurring.

Rounding

When rounding, you round to the nearest number with the amount of decimal places provided. For example:

59.54

The critical digit (last number) determines what the number will be. In this example, the critical digit is 4. 4 or less, let it rest. 5 or more, raise the score. So because the critical digit is 4, you would round the... Continue reading "Decimals, Fractions, and Percentages" »

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" »