Notes, abstracts, papers, exams and problems of Technology

What Does a Flashing Yellow Light Mean?

1) Proceed with caution.

At Night, It's Hard to See:

1) Pedestrians.

If the Rear of Your Vehicle Starts to Skid Left, You Should:

1) Steer left.

Two Cars Come to an Intersection at the Same Time. Which of the Following is True?

1) The car 'A' turning left must yield.

Before You Leave a Parking Space, Which is Parallel to the Curb, You Should:

1) Look for traffic by turning your head.

When Two Vehicles Enter an Intersection from Different Highways at the Same Time, Which Vehicle Must Yield the Right of Way?

1) Vehicle on the left.

What Should You Do When You Are Going to Enter a Roadway from a Private Road?

1) Yield the right of way to pedestrians and roadway traffic.

The Driver's Left Hand and Arm are Extended Upward.

Functions of the Drillstring:

• Transmits rotation to the drillbit
• Exerts weight on the bit; the compressive force necessary to break the rock
• Guides and controls the trajectory of the bit
• Allows fluid circulation for cooling and cleaning

Components of the Drillstring:

• Drillpipe
• Drillcollars
• Accessories including:

• Heavy-walled drillpipe (HWDP)
• Stabilisers
• Reamers
• Directional control equipment

The Kelly:

• Transmits rotation and weight-on-bit to the drillbit
• Supports the weight of the drillstring
• Connects the swivel to the uppermost length of drillpipe
• Transmits drilling fluid from the swivel into the drill string

The Top Drive:

A combined rotary table and Kelly mounted on the rig's swivel, assisting in pipe handling during operations.

Drilling Problems:

• Pipe Sticking
• Lost

Malware

Malicious software, is a type of software that has been particularly designed to gain access to or damage a computer, mostly without the knowledge of the owner. There are a lot of types of malware, including computer worm, computer viruses, Trojan horse, adware and spyware.

Computer Crime

Defined as a crime in which a computer is the object of the crime (hacking, phishing, spamming) or is used as a tool to commit an offense (child pornography, hate crimes). Cybercriminals may use computer technology to access personal information, business secrets or use the internet for malicious purposes.

Trojan Horse

A type of malware that is often disguised as legitimate software. Trojans can be employed by cyber-thieves and hackers that offer useful... Continue reading "Understanding Malware and Cybercrime: A Comprehensive Guide" »

Technology's answer to the problems of society is to build products using a simple method called the project approach. The stages of the project approach include: problem, investigation, possible solution, chosen solution, design, planning, building, check, presentation, and assessment.

Report documents include:

• Description of the prototype
• List of modifications made
• Final drawing of the solution
• Total cost of the project and the number of hours spent on it
• Environmental impact of the solution created

Serendipity: The fact of finding interesting or valuable things by chance, by mistake. Coordinator: coordinates the work. Secretary: keeps the project documents safe and writes down the tasks that are completed each day and who did them. Tools manager:

Material Classification

Natural Materials

These materials are obtained directly from nature, such as:

• Wood
• Coal
• Metal
• Stone

Artificial Materials

These materials are derived from natural materials through processing, such as:

• Glass
• Paper
• Cement

Synthetic Materials

These materials are created through chemical reactions involving artificial materials, such as:

• Plastics

Material Types and Their Properties

Ceramics

Ceramics exhibit the following properties:

• Fragility
• Low thermal conductivity
• Low electrical conductivity
• Hardness
• Brittleness

Metallic Materials

Metals possess these characteristics:

• High electrical and thermal conductivity
• Resistance
• Ductility
• Malleability
• Ability to form alloys with other elements to enhance properties

Plastics/Polyesters

Plastics and polyesters... Continue reading "Understanding Materials: Properties, Types, and Treatments" »

• Unit 7

• Limited: kept within a particular size
• Potential: possible when the necessary conditions exist
• Excessive: more than is necessary
• Peer pressure: the influence of people who are similar age
• Disadvantaged: in a situation in which you are less likely to succeed than others
• Irritable: becoming annoyed very easily
• Expose: to remove what is covering something that is very large
• Awash: having an amount of something that is very large
• Artificial: not natural
• Upgrade: to improve something so that it is of a higher quality
• Zip a file: to reduce the size of a computer file
• Save: to make sure that a computer keeps information
• Browse the internet: to look at information on the internet
• Plug sth in: to connect a piece of electrical equipment to an electricity supply
• Sync