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

ABAP Fundamentals: Key Concepts and Technical Q&A

Review essential knowledge points covering ABAP syntax, data structures, system fields, and event processing.

1. Client Dependency in ABAP Dictionary Tables

   If a table does not have MANDT as part of the primary key, it is:

   Client-independent

2. Invalid ABAP CALL Statement

   In regard to CALL, which of the following is NOT a valid statement?

   CALL PROGRAM

3. Characteristics of Transparent Tables

   Name the type of ABAP Dictionary table that has these characteristics:

   • Same number of fields as the database table
   • Same name as the database table
   • Maps 1:1 to the database table

   Transparent Table

4. ABAP Event Structure

   An event starts with an event keyword and ends with:

   Another event keyword

5. System Field for Current Date

   What is

why did adrian burn the telephone bill at the bonfire party?

because he didn´t want his father to see how big it was.

why did adrian´s mother leave mr. lucas?

because mr. lucas treated her like a sex object and she is very fond of his father.

why did they have christmas lunch four hours late?

because the turkey was not desfroot.

why did adrian believe bert and queenie´s wedding was a waste of time?

because he was 90 and 80 years old.

why did pandora refuse to nake love with adrian?

because pandora doesn´t wont to become an single parent.

why didn´t pandora send adrian a birthaday card?

she was angry because adrian liked barbara.

what happened to adrian when he sniffed the glue on the model plane?

his nose stuck to the plane and ge hat to go to... Continue reading "Dddddddddd" »

Question 1

Marks: 1

OP0001
If a pilot has connected the automatic pilot to the gyro compass

(which is assumed to be operating correctly) and the latter is

fitted with a rate correction device which is properly corrected by astronomical precession,

the course followed by the aircraft (in still air conditions) is a:

Choose one answer.

Correct

Marks for this submission: 1/1.

Question 2

Marks: 1

OP0009
If airworthiness documents do not shown any additionnal correction factor for landing performance determination on a wet runway, the landing distance shall be increased by:

Choose one answer.

Incorrect

Marks for this submission: 0/1.

Question 3

Marks:... Continue reading "Gozada de fuerte" »

Fast File System (FFS)

Writes

Writes: Writes data to blocks chosen by cylinder groups. Tries to place related blocks near each other and rotationally optimize access. Metadata updates (inodes, directories) are also written in-place within the same group.

Reads

Reads: Very fast because data is grouped by cylinder, minimizing seeks. Sequential reads benefit from rotational optimization and large block sizes (4–8 KB). The first read goes through the inode, then the inode's data block pointers.

Appends

Appends: Allocates the next block near the previous one. Uses rotational delay tables to place the next block just in time for the disk head. Large blocks plus fragments allow efficient small-file appends.

Crash Recovery

Crash Recovery: Uses fsck to walk... Continue reading "File Systems, Kernels, and High-Performance Networking" »

ASME Code for Design of Shafts

The ASME (American Society of Mechanical Engineers) code provides standard guidelines for calculating the safe diameter of a shaft subjected to different types of loads. The code considers combined effects of bending moment, torsional moment, shock, and fatigue.

ASME Shaft Diameter Determination

According to the ASME code, the shaft diameter is determined using the following formula:

$$d = \left( \frac{16}{\pi\,\tau_{allow}} \sqrt{ (K_b M_b)^2 + (K_t T)^2 } \right)^{1/3}$$

Formula Variables:

• $M_b$ = Bending moment
• $T$ = Torque
• $\tau_{allow}$ = Allowable shear stress
• $K_b$ = Shock and fatigue factor for bending
• $K_t$ = Shock and fatigue factor for torsion

ASME Recommended Allowable Stresses

The allowable shear stress ($\tau_... Continue reading "ASME Shaft Design Standards and Calculations" »

Shipboard Crew Positions

The crew of a vessel is organized into a clear hierarchy, divided by department. Below is a summary of various positions.

Core Artificial Intelligence Concepts

Black Box Models

Black Box Models are systems where the inputs and outputs are known, but the internal process is not transparent. Example: Facial recognition software within a machine learning system.

Deepfakes

Deepfakes refer to AI-generated media, such as fake celebrity videos, created to appear authentic.

Generative AI

Generative AI is technology that changes or generates realistic images, videos, and text. Example: Chatbots.

Large Language Models (LLMs)

Large Language Models are AI systems trained on vast amounts of text to understand and generate human-like language. Example: Grammarly.

Automation and Interaction

Workforce Automation

Workforce Automation involves AI, robots, or software taking over repetitive... Continue reading "Essential Artificial Intelligence Terms and Definitions" »

A widely used mathematical framework for Gaussian plume model assumes that the concentration distribution of pollutants in cross-sections perpendicular to the wind direction follows a normal distribution in both vertical and horizontal directions. The model is applied under specific assumptions:

1. Point source emissions with low vertical velocities.
2. Emissions at temperature ($T$) equal to or slightly above ambient air.
3. Stable atmospheric conditions, at least over one-hour intervals.
4. Flat and uniform soil with little surface roughness.

Hypotheses for the Model

• Wind speed and direction: constants.
• Conditions of the parameters that characterize the dispersive properties of the atmosphere: constants.
• Soil: uniform and flat.

General Diffusion Equation

The general... Continue reading "Gaussian Plume Model: Pollutant Dispersion Fundamentals" »

Investment Analysis II: Key Cash Flow Components

Financial leverage is debt. "Unleveraged" Free Cash Flow (FCF) means we calculate FCF without regard to how the firm is financed. Ultimately, we are valuing the assets of the project. We achieve this by estimating how much cash is generated by the asset side of the balance sheet.

Capital Expenditure (CAPEX)

Capital Expenditure (CAPEX) is defined as the original cost of investment in property, plant, or equipment and other long-term assets.

Formula for CAPEX

NET PPE (current) - NET PPE (prior) + Depreciation

Depreciation and Asset Valuation

Depreciation: Depreciation charges are intended to represent the cost of wear and tear over the asset's life. The Straight-Line Depreciation method divides the asset’s... Continue reading "Capital Budgeting: Calculating Cash Flows and Valuation Metrics" »

SR Flip-Flop (Set-Reset Flip-Flop)

The SR flip-flop is one of the simplest sequential circuits and serves as a fundamental building block for more complex flip-flops. It is a 1-bit memory device with two inputs: Set (S) and Reset (R). It has two outputs, Q and its complement Q̅ (Q with overline).

Logic Diagram and Working

An SR flip-flop can be constructed using two cross-coupled NAND gates (or NOR gates). Below is the working principle for the NAND-gate implementation:

1. Set Condition (S = 0, R = 1):

   • When S = 0, the output of the top NAND gate (Q) is forced to 1 (since NAND is the inverse of AND).

   • This Q = 1 is fed into the bottom NAND gate with R = 1; the bottom gate's inputs become 1 and 1, so its output (Q̅) becomes 0.

   • The circuit is now in the