Notes, summaries, assignments, exams, and problems

Vulnerabilities in Von Neumann Architecture

The system architect of the von Neumann is the way that it can allow direct memory access to the low level languages like C and C++.

If the program goes and tries to access the memory out of bound by allocating code injection to the system, it allows the system to access the memory out of the stack which causes buffer overflow and the attacker can access the other memory from the allocated stack. This way an attacker can get access to the system. Therefore von Neumann architecture is vulnerable to code injection, the effect of the buffer overflow.

Understanding Threats and Attacks

Threats

• It is a potential security violation that might exploit vulnerability of the system or assets.
• Threats can be accidental,

Resolution and Sensitivity

Resolution = MaxV / (2^bit - 1).

Linear Potentiometer

Total Resistance = 800 Ohms, E = 2V, L = 10 cm.

Sensitivity = V/L. Max/Min Z.

Z_out = || 80{10 - |x|}.

Z_min = 0 Ohms.

Z_max = 400 || 400 = 200 Ohms.

Unknown input impedance = voltage follower.

Gauge Factor

20mm wire strain gauge resistance = 150 Ohms. Under force tension, R changes by 5, and L changes to 0.08.

Load Cell

Load Cell Sensitivity / Minimum Value of N.

LC makes a change in V from 0 to 2V. V varies linearly.

LCS = 2V / 10N = 0.2 V/N.

Minimum Value of N = 10N / 0.1N = 100, 2⁶.

Filters

IIR Filter Identification

Unbounded, non-causal.

IIR/Unbounded. y[n-1] = 200x[n] + 300x[n-1] - 500x[n-2]. Non-causal.

Digital-to-Analog Conversion

N-bit R-2R Ladder

V = 0/6.4. n = 5.

Maximum V_out... Continue reading "Understanding Sensors, Filters, and Data Conversion" »

tecnology= is an applied science used 4 solve problems in real life. Create or design goods or services. 2 allows us the adaptation of the enviroment 4 our needs and to pleases our desires

algorithm=Is a set of instructions for resolve problems or performate an action

project aproach: Is Create something to solve a problem. 10 steps: 1. Problem (see and analyze the problem / 2. Research= find information fo problem / 3. Possible solution = we propose all posible solutions / 4. Choose 1 possible solution / 5. Design= we think , design to build the solution / 6. Planning = we do a sceetch of the building / 7. Build= we build the final solution / 8. Check = we check if its correct * if it isn´t correct, we go to find another solution / 9. Presentation... Continue reading "I is correct ii is correct" »

^{Correction fluid is a white liquid. The organic solvent was originally used as an ingredient in the product. This solvent is readily absorbed by the lungs via inhalation. It has been replaced by a safer alternative for painting over mistakes. A brush (which was later replaced by a foam applicator) is attached to the cap, so when the bottle is closed, the brush is immersed in the fluid. When unscrewed, the brush is covered in liquid which is then painted over the mistake. However, it is still possible to see that the product has been used, and also the original content if the paper is held up to a light.}

Functions of Language

• Expresiva or emotiva: expresses feelings
• Funcion apelativa: incites the receiver
• Representativa: provides information
• Poetica

By the Vertical Angles Congruence Theorem (Theorem 2.6), m∠4 = 115°. Lines a and b are parallel, so you can use the theorems about parallel lines.

m∠4 + (x + 5)° = 180° Consecutive Interior Angles Theorem

115° + (x + 5)° = 180° Substitute 115° for m∠4.
x + 120 = 180 Combine like terms.

x = 60 Subtract 120 from each side.7

By the Alternate Exterior Angles Theorem, m∠8 = 120°.
∠5 and ∠8 are vertical angles. Using the Vertical Angles Congruence Theorem
(Theorem 2.6), m∠5 = 120°.
∠5 and ∠4 are alternate interior angles. By the Alternate Interior Angles Theorem,
∠4 = 120°. So, the three angles that each have a measure of 120° are ∠4, ∠5, and ∠8.

By the Linear Pair Postulate (Postulate 2.8), m∠1 = 180° − 136° = 44°.

Infinitive          Past Simple          Past Participle

leave                left                                  left     

lend                  lent                                 lent

let                     let                                   let

lie                     lay                                  lain

lose                  lost                                 lost

make                made                             made

meet                 met                                met

pay                   paid                    ... Continue reading "Irregular Verbs in English: A Comprehensive Guide" »

Pride and Prejudice is about a beautiful and intelligent woman who meets a rich man whom she initially dislikes, but eventually they fall in love. The film is based on the book Pride and Prejudice by Jane Austen. Set in the United Kingdom in 2004, the film stars Keira Knightley as Elizabeth Bennet and Matthew Macfadyen as Fitzwilliam Darcy.

My favorite character is Elizabeth because she is a very beautiful and intelligent woman, ahead of her time. She prioritizes her studies and doesn't dream of getting married like other women did. The movie is well-made, with great performances by the actors, although the image quality may not be the best by today's standards. It is ideal for romantic and sensitive individuals, as it evokes strong emotions.... Continue reading "Pride and Prejudice: A Beautiful Love Story in 2004" »

Amazing Irish Animals

B,A,C,A,D,B,C,D

A Ladder to the Sky

B,B,C,A,B,D,A,C

Dublin

A,B,D,B

Hurling

Been, to, every (at), from (of), well, if, more, out

Tennis Ragazzo

C,B,A,A,D,B

Good Food

C,F,A,G,E

Dublin's Street Art

Had, most, although, will, such, the, as, up

Calling All Redheads

A,A,C,D,B,D,B,A

Malala Yousafzai

D,F,B,A,C

Foto con 4 Ragazzi

D,B,A,D,C,A,B,C

Esercizio WOULD RADER

'd rather you left / Would you rather I took / 'd rather make / would you rather I bought / 'd rather they didn't know / 'd rather do / would you rather stay / 'd rather not visit / 'd rather you didn't smoke / 'd rather rent

testo past p/ continuos

h. Told/ h.B waiting/h. Drunk/h. Arranged/ h. A. Parked/h.B. Sitting/h. Sent/ h.A. Collected/h. Had/ h. Eaten/ h.E. thought/ h.A. Started.

complete using future continuos/ perfect 4 frasi

1. Will you be doing/ will be sitting 2. Will have studied/ will have lived/ will have been 3. Will have travelled 4. Will be playing /will be watching/will be complaining/will be doing

2 box verbi e proposizioni

starting at, live on, always complain about,rely on, don't speak to, Do you really belive in, listen to, pay for, apologise to, look after, Have you heard about, dream of.

passivo e attivo

It was thought that he was spending when he... , Nobody is belived to had been killed... , K.M is supposed to open the new child, The summer is... Continue reading "I choose to live" »

Setting

In time and place: Small town, everyone from the area goes to the same unique school. Kids from different family backgrounds merge

Symbols

The dolls house: represents power, wealth, and privilege. Excuse for segregation to the Kelveys, but a point of union between Kezia and them

The smell: 'But perfect, perfect little house! Who could possibly mind the smell. It was part of the joy, part of the newness'

Metaphor

People and things can look perfect on the outside and be the contrary on the inside

Rite of passage

1. Separation (mistreatment to the Kelveys) 'the Kelveys were shunned by everyone' 'Can I ask the Kelveys just once? Certainly no'
2. Then liminality (in-betweenness) 'You can come and see our dolls house if you want to'
3. And finally aggregation.