Anak cantik,… bangun dong!!!

Anak cantik,… bangun dong!!!

Orianthi – According To You

http://www.orianthi.com/

Orianthi Panagaris (Greek: Οριάνθη Παναγιάρη) (born January 22, 1985), known mononymously as Orianthi, is an Australian singer and guitarist. She is best known for being Michael Jackson’s guitarist for his comeback concert series, This Is It. Her debut single “According to You” has peaked at #6 in Australia and #21 in the US, and her debut album Believe was released throughout the last three months of 2009 worldwide.

She worked together with Steve Vai in this video, please watch it…

Orianthi was Michael Jackson’s lead guitarist and was present on all rehearsals for his This Is It concerts before his death. In regards to being handpicked by Jackson, she stated:

“

I don’t know exactly why he picked me, but he watched my YouTube videos and loved them. He had his choice of guitar players, but I came in and played the ‘Beat It’ solo for him. Afterward he was so happy he got up and grabbed my arm and started walking up and down the stage area with me. He said, ‘Can you play once for me?’ He hired me that night. I wish he was still around. He made me believe in myself more, and I learned so much. Going into it, I thought it would be all about playing guitar solos. But the majority of it was playing chords and funky rhythms.

Her single with the title “According To You”, with great guitar sound please watch it here…

And this is the lyrics,… please enjoy it.

According to you

According to you
I'm stupid,
I'm useless,
I can't do anything right.
According to you
I'm difficult,
hard to please,
forever changing my mind.
I'm a mess in a dress,
can't show up on time,
even if it would save my life.
According to you. According to you.

But according to him
I'm beautiful,
incredible,
he can't get me out of his head.
According to him
I'm funny,
irresistible,
everything he ever wanted.
Everything is opposite,
I don't feel like stopping it,
so baby tell me what I got to lose.
He's into me for everything I'm not,
according to you.

According to you
I'm boring,
I'm moody,
you can't take me any place.
According to you
I suck at telling jokes cause I always give it away.
I'm the girl with the worst attention span;
you're the boy who puts up with it.
According to you. According to you.

But according to him
I'm beautiful,
incredible,
he can't get me out of his head.
According to him
I'm funny,
irresistible,
everything he ever wanted.
Everything is opposite,
I don't feel like stopping it,
so baby tell me what I got to lose.
He's into me for everything I'm not,
according to you.

I need to feel appreciated,
like I'm not hated. oh-- no--.
Why can't you see me through his eyes?
It's too bad you're making me decide.

According to me
you're stupid,
you're useless,
you can't do anything right.
But according to him
I'm beautiful,
incredible,
he can't get me out of his head.
According to him
I'm funny,
irresistible,
everything he ever wanted.
Everything is opposite,
I don't feel like stopping it,
baby tell me what I got to lose.
He's into me for everything I'm not,
according to you. [you, you]
According to you. [you, you]

According to you
I'm stupid,
I'm useless,
I can't do anything right.

Ayam Lada Hitam

Bahan :

• 2 buah ayam boneless (potong kecil2)
• 1 buah bawang bombay (1/2 di cincang , 1/2 di iris panjang)
• 1 buah wortel (iris panjang)
• 1 buah kentang (iris panjang)
• 1/2 sdm bawang putih pasta ( 1-2 bawang putih kali yee)
• 4 sdm Saus Tiram
• 2,5  sdm kecap manis
• 1 sdm saus sambal
• 2,5 sdt lada hitam
• merica secukupnya (optional )
• 2 sdm minyak goreng
• 1 sdm margarine
• maizena ( untuk taburan)

Cara Membuat :

1. Panaskan wajan, masukkan margarine. Kemudian masukkan kentang dan wortel lalu tumis hingga matang bersama 1 sdm saus tiram sampai empuk (sekitar 10 menit). angkat dan tiriskan. Lalu taburkan maizena ke dalamnya.

2. Panaskan wajan, masukkan minyak goreng. Tumis bawang bombay dan bawang putih hingga harum masukkan lada hitam, 3 sdm saus tiram, kecap manis, saus sambal, merica kemudian aduk rata.

3. Masukkan ayam kemudian tumis hingga matang dan empuk.

4. Campurkan kentang, wortel yang sudah ditaburi maizena,  tambahkan bawang bombay (1/2 buah irisan panjang) ke dalam wajan berisi ayam tadi, aduk rata.

5. Sajikan hangat-hangat.

The most integrated final project that I have done

This project called I-Studio.

Integrated small projects for multimedia system on our campus. We created streaming systems, broadcast systems, receiver systems and many things related with multimedia.

The members were from D4 Telkom A.

Ok guys, from now on Good Luck in the real world,… がんばてください

802.11 MAC (Media Access Control)

The following section describes the common Media Access Control layer used by the 802.11 family of standards.

The 802.11 family uses a MAC layer known as CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) NOTE: Classic Ethernet uses CSMA/CD – collision detection). CSMA/CA is, like all Ethernet protocols, peer-to-peer (there is no requirement for a master station).

In CSMA/CA a Wireless node that wants to transmit performs the following sequence:

1. Listen on the desired channel.
2. If channel is idle (no active transmitters) it sends a packet.
3. If channel is busy (an active transmitter) node waits until transmission stops then a further CONTENTION period. (The Contention period is a random period after every transmit on every node and statistically allows every node equal access to the media. To allow tx to rx turn around the contention time is slotted 50 micro sec for FH and 20 micro sec for DS systems).
4. If the channel is still idle at the end of the CONTENTION period the node transmits its packet otherwise it repeats the process defined in 3 above until it gets a free channel.

CSMA/CA Protocol

Key:

1. D = DCF Inter Frame Space (DIFS)
2. S = Short Inter Frame Space (SIFS)
3. CW = Contention Window
4. MPDU = MAC Protocol Data Unit
5. A = Ack

802 11 also offers a polling mode (known as PCF – Point Co-ordination Function) which is fairly classic polling scheme e.g. 3270 bi-sync!! As with all polling protocols a single master (Base Station) is required.

To improve efficiency additional features are employed:

1. Positive Acknowledgement (ACK)
2. MAC level retransmission
3. Fragmentation

ACKing

At the end of every packet the receiver, if it has successfully received the packet, will return an ACK packet (if not received or received with errors the receiver will NOT respond i.e. there is no NACK). The transmit window allows for the ACK i.e. CONTENTION period starts after the ACK should have been sent.

MAC level retransmission

If no ACK is received the sender will retry the transmit (using the normal CSMA/CA procedures) until either successful or the operation is abandoned with exhausted retries.

Fragmentation

Bit error rates on wireless systems (10**-5, 10**-6) are substantially higher than wire-line systems (10**-12). Large blocks may approach the number of bits where the probability of an error occurring may = 1 i.e. every block could fail including the re-transmission. To reduce the possibility of this happening large blocks may be fragmented by the transmitter and reassembled by the receiver node e.g. a 1500 byte block (12,000 bits) may be fragmented into 5 blocks of 300 bytes (2,400 bits). While there is some overhead in doing this – both the probability of an error occurring is reduced and, in the event of an error, the re-transmission time is also reduced.

The Hidden Node Problem

The hidden node problem occurs in a point to multi-point network and is defined as being one in which three (or more nodes) are present. Node A, Node B and Node C. It is possible that in this case Node B can hear Node A (and vice versa) and Node B can hear Node C (and vice versa) BUT Node C cannot hear Node A. In a CSMA/CA environment Nodes A and C would both properly transmit (they cannot hear each other on the ‘listen’ phase so could both simultaneously and properly transmit a packet) but Node B would get corrupted data.  Nodes A and C are said to be ‘hidden’ from each other.

Use of RTS and CTS

Hidden Nodes are solved by the use of a RTS (request to send)/CTS (clear to send) protocol prior to packet transmission. In our three node network above Node A sends a small RTS packet which is heard by Node B which send a small CTS packet which is heard by both Nodes A and Node C. Node C will not transmit in this case.

CSMA/CA with RTS/CTS

Key:

1. D = DCF Inter Frame Space (DIFS)
2. S = Short Inter Frame Space (SIFS)
3. CW = Contention Window
4. MPDU = MAC Protocol Data Unit
5. A = Ack

Node Identification

Each node in a 802.11 network is identified by its MAC address (exactly the same as Ethernet a 6 byte – 48 bit value). Receiving nodes recognize their MAC address.

Access Points

MAC Packet Format

The following defines the format of an 802.11 packet (for 802.3 packet format see here)

Frame Control	Duration ID	Address1 (source)	Address2 (destination)	Address3 (rx node)	Sequence Control	Address4 (tx node)	Data	FCS
2	2	6	6	6	2	6	0 – 2,312	4

Values:

NOTE: Bits are numbered right to left (i.e. bit number is same as 2**n)

Field	Bits	Values	Notes/Description
Frame Control	15 – 14		Protocol version. Currently 0
	13 – 12		Type
	11 – 8		Subtype
	7		To DS. 1 = to the distribution system.
	6		From DS. 1 = exit from the Distribution System.
	5		More Frag. 1 = more fragment frames to follow (last or unfragmented frame = 0)
	4		Retry. 1 = this is a re-transmission.
	3		Power Mgt. 1 = station in power save mode, 1 = active mode.
	2		More Data. 1 = additional frames buffered for the destination address (address x).
	1		WEP. 1 = data processed with WEP algorithm. 0 = no WEP.
	0		Order. 1 = frames must be strictly ordered.
Duration ID	15 – 0		For data frames = duration of frame. For Control Frames the associated identity of the transmitting station.
Address 1	47 – 0		Source address (6 bytes).
Address 2	47 – 0		Destination address (6 bytes).
Address 3	47 – 0		Receiving station address (destination wireless station)
Sequence Control	15 – 0
Address 4	47 – 0		Transmitting wireless station.
Frame Body			0 – 2312 octets (bytes).
FCS	31 – 0		Frame Check Sequence (32 bit CRC). defined in P802.11.

---

IEEE – Young Researcher Award

From IEEE ISCE2009 in Kyoto, I got “Young Researcher Award”, thanks to  Prof. Nobuo Funabiki.

Thank you

My first IEEE Xplore page

http://www.ieeexplore.ieee.org/xpl/freeabs_all.jsp?isnumber=5156791&arnumber=5156885&count=275&index=92

Akhirnya aku punya juga,…

Efficient Reading of Papers in Science and Technology

Prepared by : Michael J. Hanson

Updated by: Dylan J. McNamee

Introduction:

Why Read?

Before beginning to read a paper, consider why you are doing it. What do you want to get out of it? Your needs control how you read. If you only need an overview, a brief skim may suffice. If you will present the paper to others, you will need to dig deeply, to challenge the paper’s arguments until you understand it fully. If you will use the information later, taking notes will help you remember it. If you don’t know what you hope to gain from the paper, you can not tell whether reading it will be beneficial or a waste of time.

In order to get the most from your reading, you should be properly prepared. Find a quiet place to work where you will not be disturbed or distracted, have a pencil and note pad at hand, and bear in mind exactly what you expect to get from this paper.

The following method for reading a scientific paper offers you ideas about the process of reading a paper, how to decide what to read, how to build a broad framework by skimming, and how to challenge the paper to get depth of understanding. Finally, it will show you how to take notes so that the key points won’t be lost as soon as you set the paper down. Since reading is the process of getting ideas from the author, you must focus on the author’s thoughts, not just read the words on the paper.

Deciding what to read

When you first approach a paper, ask yourself “What did the author do?” Reading the title and the abstract should tell you this. Then decide if the paper is useful to you now. If so, read it. If not, might the paper be useful to you later? If so, file it. If it is not relevant to you, skip it.

Reading for Breadth:

Build a framework

If you decide to read the paper, first skim it.
• Read the introduction.
• Read the section headings.
• Look at the tables and graphs to see what they say and read the captions.
• Read the definitions and theorems.
• Read the conclusions.
• Consider the credibility of the article:

Who wrote it? Are they well-known?
Where do they work? What biases might they have as a result of their employer?
Where was the article published? What is the reputation of the journal? Was the journal refereed?
When was it written? Might it be outdated or superceded?

• Skim the bibliography:

How extensive is it?
Are the authors aware of current work?
Does it reference classic papers in this field?
Have you read any of the papers that are referred to?
Do you know relevant research that isn’t cited?

By skimming the paper first you can learn what the authors did, and develop a framework to understand the parts of the paper. Developing a framework adds to your general understanding of the field, and gives you a basis to understand the paper. If you know what conclusions they draw, you can follow their arguments more easily. Knowing where they are going can help you to follow their path and give you a chance to find shortcuts or places where they missed a turn.

Once you have skimmed a paper you have a broad idea of what they did. Then you can decide if you want to know more. If you are interested in how they did it, then read the body of the paper for details. If not, file away what you have learned and congratulate yourself for saving the time of reading the paper in depth.

Reading in Depth:

Challenge what you read

There is a lot of junk published, so you should be selective in what you read and what you believe. When you read a paper in detail, approach it with scientific skepticism. You can do this by trying to tear the arguments apart.

Examine the assumptions

• Do their results rely on any assumptions about trends or environments?
• Are these assumptions reasonable?

Examine the methods

• Did they measure what they claim?
• Can they explain what they observed?
• Did they have adequate controls?
• Were tests carried out in a standard way?

Examine the statistics

• Were appropriate statistical tests applied properly?
• Did they do proper error analysis?
• Are the results statistically significant?

Examine the conclusions

• Do the conclusions follow logically from the observations?
• What other explanations are there for the observed effects?
• What other conclusions or correlations are there in the data that they did not point out?

By challenging what you read, you will understand better what the author is saying and why they say it. You will also be able to decide whether the evidence supports their conclusions, and to draw your own conclusions from their data. Once you understand the paper, ask yourself how you can apply their approach to your own work.

Taking Notes:

React to what you read

Taking notes will help you to understand what you read and will save you effort in the future. When you have just read a paper, you may understand it well. The definitions are clear, the charts show correlations at a glance. But next week, when you are writing a report on this subject, or next year, when you need to refer to the paper again, it may not be so clear.

Highlight major points

On papers you plan to keep, underline main points or mark them with a line in the margin; make notes so that new ideas will stand out. When you find a definition of a new term, abbreviation or acronym, write “def” in the margin. When you find an example that clarifies a point, note that in the margin.

When you see a chart or table, examine it. Figure out what its significance is. What trends does it show? What correlations? Write a note explaining it in your own way.

React to the points in the paper

If you see a correlation to other work, note it in the margin. If you doubt a statement, note your objection. If you find a pleasing quotation, write it down.

Construct your own example

This can tell you if you understand the definitions and terminology, give you insight on why a theorem or result holds, and expose aspects not covered by the examples in the paper.

Summarize what you read

When you have digested an article, write a short summary. In your own words, state what you learned from the paper. What were the main points for you? Keep the summary with the article for future reference.

Reacting to what you are reading gets you emotionally involved in the argument. Emotion emphasizes what is said, making it easier to remember. Writing a summary helps to relate the paper to what you already know, again aiding memory by tying into your framework for the subject. The summary also serves as a reference when you need to return to the paper.

Summary:
How to read a paper

Copyright © 1989, 1990 Michael J. Hanson,
revised by Dylan J. McNamee (dylan@cse.ogi.edu)

Reference Card

Manual for daily used with Linux

Vi Reference Card, gdb quick reference, Sed stream editor cheat sheet and awk reference

Table of Integrals, Series, and Products

Buat ngerjain rumus-rumus matematika, …

Terima Kasih buat Mas Zulkifli yang sudah mengenalkan buku ini.

Tables of Integrals, Series, and Products 7Ed

Google online version : Read