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TOPIC: Re:Parents are the best teacher
#8
ranlin1r (User)
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Parents are the best teacher 1 Year, 2 Months ago Karma: 0  
Parents are the best teacher

Who teaches you to walk? Who teaches you to speak? It is your parents who teach you to do these basic things in your life. So don't you think that parents are the best teachers! Firstly, parents know us very much. Parents give us life, and I think that we will spend large amount of time with them. So they know our merit and demerit in details. Meanwhile, they will help us to get rid of our demerit.
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Furthermore, parents possessed many experiences. Since they are older than us, they have experienced many things. Sometimes, they are just like our models. And as the saying goes: "Example is better than precept." So we will unconsciously copy some of our parents' habits and _style_s of behavior, i.e. we can learn many things from them.Finally, parents will teach us everything. Since schoolteachers can just teach us knowledge from the books, our parents can teach us everything. For example, I learn knitting, cooking and make-up from my mother, while learn fixing leaky faucet from my father. They are the persons who love me most, so they will teach me everything without reservations.

Just as the saying goes: "There is no place like home." And I think there is no teacher like our parents. They are the best teachers in our life.
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Self-confidence

Confidence is power--the power to attract, persuade, influence, and succeed. Imagine what your life would be like if you had an abundance of selfconfidence !

Confidence isn't an inherited trait, it' s a learned one. This means that you can have an abun-

dance of self-confidence. Start here, right now. archlord gold,

Confidence starts in the mind.What you think of yourself very much influences the way you feel about yourself. This, in turn, affects the way you speak and act.

No one can make you feel inferior without your consent.

The very first thing you have to do to create abundant self-confidence is to start thinking with confidence. Pay attention to your internal dialogue, and learn to notice when you allow negativity or doubt to control the course of your thinking.

Your environment has a tremendous influence on you. The books you read, the people you spend time with, and the music you listen to all influence the way you think and feel about yourself and the world around you.

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In a nutshell, your environment can either build up your self-confidence or drag it down.

If you're in a situation where you're discouraged, such as an unhealthy relationship or a miserable job, you have to change that situation if you want your self-confidence level to grow. aoc gold,

Create an environment that supports you if your desire to have abundant self-confidence. Spend time with confident people.

Remember those, self-confidence can be yours. Take it!


Parents are the best teacher
 
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#12
wufei526 (User)
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Re:Parents are the best teacher 1 Year ago Karma: 0  
Lamination
Some PCBs have trace _layer_s inside the PCB and are called multi-_layer_ PCBs. These are formed by bonding together separately etched thin boards.


Drilling
Holes, or vias, through a PCB are typically drilled with tiny drill bits made of solid tungsten carbide. The drilling is performed by automated drilling machines with placement controlled by a drill tape or drill file. These computer-generated files are also called numerically controlled drill (NCD) files or "Excellon files". The drill file describes the location and size of each drilled hole.

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When very small vias are required, drilling with mechanical bits is costly because of high rates of wear and breakage. In this case, the vias may be evaporated by lasers. Laser-drilled vias typically have an inferior surface finish inside the hole. These holes are called micro vias.

It is also possible with controlled-depth drilling, laser drilling, or by pre-drilling the individual sheets of the PCB before lamination, to produce holes that connect only some of the copper _layer_s, rather than passing through the entire board. These holes are called blind vias when they connect an internal copper _layer_ to an outer _layer_, or buried vias when they connect two or more internal copper _layer_s and no outer _layer_s.

The walls of the holes, for boards with 2 or more _layer_s, are plated with copper to form plated-through holes that electrically connect the conducting _layer_s of the PCB. For mult_i_layer__ boards, those with 4 _layer_s or more, drilling typically produces a smear comprised of the bonding agent in the laminate system. Before the holes can be plated through, this smear must be removed by a chemical de-smear process, or by plasma-etch.

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[edit] Exposed conductor plating and coating
The places to which components will be mounted are typically plated, because bare copper oxidizes quickly, and therefore is not readily solderable. Traditionally, any exposed copper was plated with solder by hot air solder levelling (HASL). This solder was a tin-lead alloy, however new solder compounds are now used to achieve compliance with the RoHS directive in the EU, which restricts the use of lead. Other platings used are OSP (organic surface protectant), immersion silver (IAg), immersion tin, electroless nickel with immersion gold coating (ENIG), and direct gold. Edge connectors, placed along one edge of some boards, are often gold plated.

Electrochemical migration (ECM) is the growth of conductive _meta_l filaments on or in a printed circuit board (PC under the influence of a DC voltage bias.[1][2]


[edit] Solder resist
Areas that should not be soldered to may be covered with a polymer solder resist (solder mask) coating. The solder resist prevents solder from bridging between conductors and thereby creating short circuits. Solder resist also provides some protection from the environment.
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[edit] Screen printing
Line art and text may be printed onto the outer surfaces of a PCB by screen printing. When space permits, the screen print text can indicate component designators[1], switch setting requirements, test points, and other features helpful in assembling, testing, and servicing the circuit board.

Screen print is also known as the silk screen, or, in one sided PCBs, the red print.

Lately some digital printing solutions have been developed to substitute the traditional screen printing process. This technology allows printing variable data onto the PCB, including serialization and barcode information for traceability purposes.

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[edit] Test
Unpopulated boards may be subjected to a bare-board test where each circuit connection (as defined in a netlist) is verified as correct on the finished board. For high-volume production, a Bed of nails tester, a fixture or a Rigid needle adapter is used to make contact with copper lands or holes on one or both sides of the board to facilitate testing. A computer will instruct


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the electrical test unit to send a small amount of current through each contact point on the bed-of-nails as required, and verify that such current can be seen on the other appropriate contact points. A "short" on a board would be a solid connection where there should be no connection. An "open" is between two points that should be connected and are not. For small- or medium-volume boards, flying-probe and flying-grid testers use moving test heads to make contact with the copper/silver/gold/solder lands or holes to verify the electrical connectivity of the board under test
 
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#17
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Re:Parents are the best teacher 10 Months, 1 Week ago Karma: 0  
Kingston is the capital and largest city of Jamaica. It is located in the southeastern part of the island country. It was built in1692. The Blue Mountains, Red Hills, Long Mountain and the Kingston Harbour lie around the city. If you are those interested in true Jamaican culture and history, Kingston is a must visit.
Attractions:
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Devon House
Devon House stands in the heart of Kingston, Jamaica. It was built in 1881 by George Stiebel, a very rich Jamaican. It now serves as a museum, park, shopping and dining center for visitors.
Bob Marley Museum
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Jamaica’s world-famous son, singer-songwriter Bob Marley, made reggae music popular throughout America and around the world. He died of cancer in 1981 when he was 36 years old. In memory of him, the museum was built. It is the most-visited sight in Kingston.
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Hope Botanical Gardens
It is in the middle of Kingston. It is 20 hectares including a cactus garden, a forest garden and an ornamental pond. It lies next to the University of the West Indies, and also has a small zoo and an interesting, large cage where many birds are kept.
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High school student Clay Jensen returns home from school to find a mysterious box with his name on it lying on his porch. Inside he discovers several cassette tapes recorded by Hannah Baker, his classmate, who killed herself two weeks earlier. On the tapes, Hannah explains that there are thirteen reasons why she decided to end her life. Clay is one of them. If he listens, he’ll find out what happened.
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Through Hannah and Clay's narratives, the author Jay Asher invents an intricate and heartrending story.
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If you have the chance to read one novel this year, Thirteen Reasons Why should be your best choice. It’s sad, amazing, heartbreaking, and hopeful, all at the same time. By reading it, you’ll think about your actions, and wonder what type of effect they have on other people.
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#21
Ramya (User)
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Re:Parents are the best teacher 8 Months, 3 Weeks ago Karma: 0  
A Coke and a Smile

I know now that the man who sat with me on the old wooden stairs that hot summer night over thirty-five years ago was not a tall man. But to a five-year-old, he was a giant. We sat side by side, watching the sun go down behind the old Texaco service station across the busy street. A street that I was never allowed to cross unless accompanied by an adult, or at the very least, an older sibling. (wow power leveling)


Cherry-scented smoke from Grampy's pipe kept the hungry mosquitoes at bay while gray, wispy swirls danced around our heads. Now and again, he blew a smoke ring and laughed as I tried to target the hole with my finger. I, clad in a cool summer nightie, and Grampy, his sleeveless T-shirt, sat watching the traffic. We counted cars and tried to guess the color of the next one to turn the corner.


Once again, I was caught in the middle of circumstances. The fourth born of six children, it was not uncommon that I was either too young or too old for something. This night I was both. While my two baby brothers slept inside the house, my three older siblings played with friends around the corner, where I was not allowed to go. I stayed with Grampy, and that was okay with me. I was where I wanted to be. My grandfather was baby-sitting while my mother, father and grandmother went out. world of warcraft gold


Thirsty?" Grampy asked, never removing the pipe from his mouth.

" Yes," was my reply." How would you like to run over to the gas station there and get yourself a bottle of Coke?"

I couldn't believe my ears. Had I heard right? Was he talking to me? On my family's modest income, Coke was not a part of our budget or diet. A few tantalizing sips was all I had ever had, and certainly never my own bottle.

" Okay," I replied shyly, already wondering how I would get across the street. Surely Grampy was going to come with me.

Grampy stretched his long leg out straight and reached his huge hand deep into the pocket. I could hear the familiar jangling of the loose change he always carried. Opening his fist, he exposed a mound of silver coins. There must have been a million dollars there. He instructed me to pick out a dime. After he deposited the rest of the change back into his pocket, he stood up. World of warcraft Power Leveling

" Okay," he said, helping me down the stairs and to the curb, " I'm going to stay here and keep an ear out for the babies. I'll tell you when it's safe to cross. You go over to the Coke machine, get your Coke and come back out. Wait for me to tell you when it's safe to cross back."

My heart pounded. I clutched my dime tightly in my sweaty palm. Excitement took my breath away.

Grampy held my hand tightly. Together we looked up the street and down, and back up again. He stepped off the curb and told me it was safe to cross. He let go of my hand and I ran. I ran faster than I had ever run before. The street seemed wide. I wondered if I would make it to the other side. Reaching the other side, I turned to find Grampy. There he was, standing exactly where I had left him, smiling proudly. I waved.

" Go on, hurry up," he yelled. cd keys

My heart pounded wildly as I walked inside the dark garage.I had been inside the garage before with my father. My surroundings were familiar. I heard the Coca-Cola machine motor humming even before I saw it. I walked directly to the big old red-and-white dispenser. I knew where to insert my dime. I had seen it done before and had fantasized about this moment many times.

The big old monster greedily accepted my dime, and I heard the bottles shift. On tiptoes I reached up and opened the heavy door. There they were: one neat row of thick green bottles, necks staring directly at me, and ice cold from the refrigeration. I held the door open with my shoulder and grabbed one. With a quick yank, I pulled it free from its bondage. Another one immediately took its place. The bottle was cold in my sweaty hands. I will never forget the feeling of the cool glass on my skin. With two hands, I positioned the bottleneck under the heavy brass opener that was bolted to the wall. The cap dropped into an old wooden box, and I reached in to retrieve it. I was cold and bent in the middle, but I knew I needed to have this souvenir. Coke in hand, I proudly marched back out into the early evening dusk. Grampy was waiting patiently. He smiled.

wow power level," Stop right there," he yelled. One or two cars sped by me, and once again, Grampy stepped off the curb." Come on, now," he said, " run." I did. Cool brown foam sprayed my hands." Don't ever do that alone," he warned.I held the Coke bottle tightly, fearful he would make me pour it into a cup, ruining this dream come true. He didn't. One long swallow of the cold beverage cooled my sweating body. I don't think I ever felt so proud.
 
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