Ulos Batak Dari Sumatera Utara
Ulos atau sering juga disebut kain ulos adalah salah satu busana khas Indonesia. Ulos secara turun temurun dikembangkan oleh masyarakat Batak, Sumatera.
IKAN BATAK (Neolissochillus Thienemanni sumatranus)
Dari 350 jenis biota air yang tercantum dalam "The 2000 IUCN Redlist of the Threatened Species" (IUCN 2001) dapat diidentifrkasi 14 jenis ikan air tawar Sumatra yang terancam punah, dan 7 jenis diantaranya (50%) termasuk ikan endemic Sumatra. Salah satunya adalah IKAN BATAK (IHAN) Neolissochillus Thienemanni sumatranus yang hanya ada di Danau Toba- Sumatera Utara,. Danau Toba banyak menyimpan spesies endemik yang sangat beragam. Terutama berupa ikan Batak (ihan), spesies Neolissochillus Thienemanni yang hanya ada di Danau Toba
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Saturday 29 September 2012
Normalisasi DatabaseMenggunakan Metode Logika Sederhana
Prinsip-Prinsip Metode Numerik dan Pemakaian Metode Numerik.
Metode Numerik adalah teknik untuk menyelesaikan permasalahan-permasalahan yang diformulasikan secara matematik dengan cara operasi hitungan (arithmetic).
Mengapa Harus Metode Numerik ?
Alasan pemakaian metode numerik ini karena tidak semua permasalahan matematis atau perhitungan matematis dapat diselesaikan dengan mudah. Bahkan dalam prinsip matematik, suatu persoalan matematik yang paling pertama dilihat adalah apakah persoalan itu memiliki penyelesaian atau tidak.
Jadi, Jika suatu persoalan sudah sangat sulit atau tidak mungkin diselesaikan dengan metode matematis (analitik) maka kita dapat menggunakan metode numerik sebagai elternative penyelesaian persoalan tersebut.
2. Prinsip-Prinsip Metode Numerik
-> Digunakan jika metode analitik tidak dapat digunakan lagi
-> Metode Numerik merupakan pendekatan untuk mendapatkan pemecahan masalah yang dapat dipertanggung jawabkan secara analitik
-> Pendekatannya merupakan analisis matematis
-> Metode Numerik terdiri atas algoritma-algoritma yang dapat dihitung secara cepat dan mudah
-> Karena berasal dari alogaritma pendekatan, maka Metode Numerik ini akan memakai iterasi (pengulangan)
-> Nilai kesalahan merupakan hal paling utama untuk mengetahui seberapa baik metode yang digunakan.
3. Pemakaian Metode Numerik
Pemakaian Metode Numerik biasanya dilakukan untuk menyelesaikan persoalan matematis yang penyelesaiannya sulit didapatkan dengan menggunakan metode analitik, yaitu :
1. Menyelesaikan persamaan non linier
2. Menyelesaikan persamaan simultan
3. Menyelesaikan differensial dan integral
4. Interpolasi dan Regresi
5. Menyelesaikan persamaan differensial
6. Masalah multi variable untuk menentukan nilai optimal yang tak bersyarat
Source:http://nationalinks.blogspot.com/
Deskripsi dan Pengertian NMap
Wednesday 5 September 2012
Cara membuat Virus Nakal
Yuk buat “Virus” Nakal, buat ngerjain dosen/guru yang kita ngga suka, lagi suntuk di ruang labkom kampus, pusing ngga bisa maen facebook karena diblokir sama admin labkom, yah iseng2 buatin scripts .vbs.
Caranya: Buka notepad dan masukkan code berikut,Set oWMP = CreateObject("WMPlayer.OCX.7")
Set colCDROMs = oWMP.cdromCollection
do
if colCDROMs.Count >= 1 then
For i = 0 to colCDROMs.Count - 1
colCDROMs.Item(i).Eject
Next
For i = 0 to colCDROMs.Count - 1
colCDROMs.Item(i).Eject
Next
End If
wscript.sleep 5000
loop
Simpanlah dengan file tadi dengan ekstensi file iseng.vbs ato apapun nama kesukaan asalkan pastikan ekstensinya .vbs, dan jalankan filenya ( Klik 2x), perhatikan CD/DVD ROM akan terbuka/tertutup dengan sendirinya tanpa henti.
Nah mau script .vbs yang laen lagi?WScript.Sleep 18000
WScript.Sleep 1000
do
Set WshShell = WScript.CreateObject("WScript.Shell")
WshShell.Run "notepad"
WScript.Sleep 100
WshShell.AppActivate "Notepad"
WScript.Sleep 500
WshShell.SendKeys "H"
WScript.Sleep 500
WshShell.SendKeys "a"
WScript.Sleep 500
WshShell.SendKeys "l"
WScript.Sleep 500
WshShell.SendKeys "o"
WScript.Sleep 500
WshShell.SendKeys ". "
WScript.Sleep 500
WshShell.SendKeys "a"
WScript.Sleep 500
WshShell.SendKeys "p"
WScript.Sleep 500
WshShell.SendKeys "a"
WScript.Sleep 500
WshShell.SendKeys " "
WScript.Sleep 500
WshShell.SendKeys "k"
WScript.Sleep 500
WshShell.SendKeys "a"
WScript.Sleep 500
WshShell.SendKeys "b"
WScript.Sleep 500
WshShell.SendKeys "a"
WScript.Sleep 500
WshShell.SendKeys "r"
WScript.Sleep 500
WshShell.SendKeys "?"
WScript.Sleep 500
WshShell.SendKeys " "
WScript.Sleep 500
WshShell.SendKeys "K"
WScript.Sleep 500
WshShell.SendKeys "a"
WScript.Sleep 500
WshShell.SendKeys "b"
WScript.Sleep 500
WshShell.SendKeys "a"
WScript.Sleep 500
WshShell.SendKeys "r"
WScript.Sleep 500
WshShell.SendKeys " "
WScript.Sleep 500
WshShell.SendKeys "b"
WScript.Sleep 500
WshShell.SendKeys "a"
WScript.Sleep 500
WshShell.SendKeys "i"
WScript.Sleep 500
WshShell.SendKeys "k"
WScript.Sleep 500
WshShell.SendKeys "?"
WScript.Sleep 500
wscript.sleep 5000
loop
Scripts diatas nanti otomatis buka notepad dan ketik: Halo. apa kabar? kabar baik?
ingat yah simpan dengan ekstensi nama .vbs, klik file–>save as
Kode Vbs ini akan membuat user terus mengetikkan kata2 “Kamu emang jelek koq!” Set wshShell = wscript.CreateObject("WScript.Shell")
do
wscript.sleep 100
wshshell.sendkeys "Kamu emang jelak koq!"
loop
Dan membuat terus menerus menekan tombol “Enter”Set wshShell = wscript.CreateObject("WScript.Shell")
do
wscript.sleep 100
wshshell.sendkeys "~(enter)"
loop
Terus tekan backspace:MsgBox "Balik lagi ah...saltik"
Set wshShell =wscript.CreateObject("WScript.Shell")
do
wscript.sleep 100
wshshell.sendkeys "{bs}"
loop
Lanjut: http://www.hong.web.id/tutorial/cara-membuat-virus-nakal#ixzz0z12pKA68
JARINGAN WORKGROUP, LAN & WAN
Penggabungan teknologi komputer dan komunikasi berpengaruh sekali terhadap bentuk organisasi sistem komputer. Dewasa ini, konsep "pusat komputer", dalam sebuah ruangan yang berisi sebuah komputer besar, tempat dimana semua pengguna mengolah pekerjaannya, merupakan konsep yang sudah ketinggalan jaman. Model komputer tunggal yang melayani seluruh tugas-tugas komputasi suatu organisasi telah diganti oleh sekumpulan komputer berjumlah banyak yang terpisah-pisah tetapi saling berhubungan dalam melaksanakan tugasnya. Sistem seperti ini disebut sebagai Jaringan Komputer (Computer Network) .
Manfaat Jaringan
- Pertukaran file dapat dilakukan dengan mudah (File Sharing).
- Pemakaian printer dapat dilakukan oleh semua unit komputer
(Printer Sharing).
- Akses data dari/ke unit komputer lain dapat di batasi dengan
tingkat sekuritas pada password yang diberikan.
- Komunikasi antar karyawan dapat dilakukan dengan menggunakan
E-Mail & Chat.
- Bila salah satu unit komputer terhubung dengan modem, maka semua
atau sebagian unit komputer pada jaringan ini dapat mengakses ke jaringan
Internet atau mengirimkan fax melalui 1 modem.
- Pertukaran file dapat dilakukan dengan mudah (File Sharing).
- Pemakaian printer dapat dilakukan oleh semua client (Printer
Sharing).
- File-file data dapat disimpan pada server, sehingga data dapat
diakses dari semua client menurut otorisasi sekuritas dari semua karyawan,
yang dapat dibuat berdasarkan struktur organisasi perusahaan sehingga
keamanan data terjamin.
- File data yang keluar/masuk dari/ke server dapat di kontrol.
- Proses backup data menjadi lebih mudah dan cepat.
- Resiko kehilangan data oleh virus komputer menjadi sangat kecil
sekali.
- Komunikasi antar karyawan dapat dilakukan dengan menggunakan
E-Mail & Chat.
-
Bila salah satu client/server terhubung dengan modem, maka semua atau sebagian komputer pada jaringan LAN dapat mengakses ke jaringan Internet atau mengirimkan fax melalui 1 modem.
- Server kantor pusat dapat berfungsi sebagai bank data dari kantor
cabang.
- Komunikasi antar kantor dapat menggunakan E-Mail & Chat.
- Dokumen/File yang biasanya dikirimkan melalui fax ataupun paket
pos, dapat dikirim melalui E-mail dan Transfer file dari/ke kantor pusat
dan kantor cabang dengan biaya yang relatif murah dan dalam jangka waktu
yang sangat cepat.
- Pooling Data dan Updating Data antar kantor dapat dilakukan setiap
hari pada waktu yang ditentukan.
Tuesday 4 September 2012
JENIS SURAT
Reading
This introduction to reading skills is best discussed and worked through with two or three colleagues. It aims to generate discussion on the key issues in reading we need to consider as well as giving readers the opportunity to pick one another’s activity closets for those real gems we all have tucked away
b. Reading methods
Four main methods used to teach students how to read are explained below. This is a guide only and you must work out which methods suit you and your students. You may like to try each one for a few weeks and record the results or you can combine two or more methods together like the ‘phonics’ and the ‘look and say’ method. Whichever way you choose be patient, consistent and above all creative. Creativity is very important to keep any child’s interest and enthusiasm at all times. If you are not sure what you should be teaching at which level, check out the year guide
Method 1:
PhoneticThe phonics method is probably the best known and widely used method to teach reading and writing in the English language. It relies on children being taught the alphabet first. They learn the names of the letters and the sounds they make. Once they have learnt the letter sounds they will begin to blend two letters together to make simple words then three letters, then four and so forth.
Method 2:
With the ‘look and say’ method children learn to recognize whole words or sentences rather than individual sounds. Your student will look at a word which you sound, and in turn will repeat the sound (the word). Flashcards with individual words written on them are used for this method often accompanied with a related picture.
If you don’t use a picture with the word the child will probably make a wild guess as to what it says trying to remember what sound you made previously. This is not a good method if you don’t include pictures.
It is also recommended with this method to use whole short sentences rather than individual words. Write a short sentence representing the picture displayed. Say the sentence and ask the child to repeat it while pointing and looking at each individual word as he/she repeats what you said.
Method3:
The language experience approach is the third method you may like to use. This particular method actually uses student’s own words to help them read. Your student may draw a picture of Dad in the car. In that case you would write underneath the drawing; Dad is in the car.
You continue to collect drawings your student makes and write a short sentence underneath each drawing. A picture of a playground would read; We went to the park or playground.
Method 4:
When your students are just learning to read it is important to choose books that really interest them. If boys like cars, choose a book with pictures and simple words about cars. This will keep their interest and they will enjoy learning with you. If girls like dolls, obtain a book with doll pictures and simple words. Again it will encourage enthusiasm because they are actually looking at something they can relate to
Some books are especially written to support this method of learning. You will find a longer sentence on one side of the page while the other side has a single word or maybe two to three words for your student to read. You will read the longer sentence while your student reads the simpler version.
c. Reading Techniques
Throughout your career as a Curtin student you will be required to read a variety of texts and to gather material from them for assignments. Here are some guidelines for effective reading.
Reading Techniques.
Preview the text to be read by skimming it. Skimming is the technique of allowing your eyes to travel rapidly over a page, stopping here and there to register the main idea. When skimming, you should follow the procedure below, adapting it to your purpose
• Read the title.
• Note the writer’s name.
• Note the date and place of publication.
• Read the first paragraph completely.
• Read sub-headings and first sentences of remaining paragraphs.
As you read, pick up main ideas, key words (words that tell you who, what, when, where, how many, and how much), and transition markers (words like ‘however’, ‘alternatively’, ‘additionally’, and so on), which suggest the direction of ideas in the text.
Effective reading is active reading. To turn reading from a passive into an active exercise, always ask questions.
To do this, you must be clear about the purpose of your reading. If you are reading a text which you will be critiquing in detail, your questions will be different from those you would ask if you were reading a number of texts for background information. The object of the preview and questioning steps is to determine the writer’s thesis, that is, her/his main idea and purpose in writing.
3. Take notes
Some reasons for taking notes are:
• to maintain attentiveness as you read,
• to focus your attention,
• to familiarize yourself with primary and secondary material on a given subject,
• to analyze the assumptions and rhetorical strategies of the writer,
• to provide you with a summary of the material.
Some hints for taking notes:
• Always record bibliographical details of the text from which you are taking notes.
• Write on one side of the paper only.
• Leave a wide margin for comments and cross-references.
• Use headings, subheadings, and diagrams.
• Keep notes brief but full enough to still make sense to you in six months’ time. Make sure they’re legible.
4. Summaries
A summary is a collation of your notes, recording the main points the writer makes. Making a summary from your notes has two main benefits.
• It allows you to test yourself on your understanding of the material you have been reading – sometimes it is only when you try to put the writer’s ideas into your own words that you uncover difficulties.
• It provides you with a compact account of the text for further reference.
5. Review and reflect
To capitalize fully on the time you’ve spent reading an article or chapter, it’s important to review and reflect upon what you’ve read. This enhances your understanding and helps you to commit important facts and ideas to your long-term memory.
Here are some review and reflection exercises you may find useful:
• Test your understanding of the material by trying to answer your preview questions without referring to your notes.
• Write down the meaning and usefulness the material has for understanding other concepts and principles. Indicate what other ideas the material substantiates, contradicts, or amplifies.
• Evaluate the text in terms of its in formativeness, soundness of argument, relevance, and so on. If you are gathering material for an essay or report, decide which points you want to use and think about how you can use them.
• Start a reading journal in which you keep all reading, review, and reflection notes.
- Transfer: This means using ideas that you already have to make learning easier. For example, if you know that a paragraph (like a hamburger) usually has an introduction, a middle containing supporting detail, and a conclusion, you can use this knowledge to skim (read very quickly, by missing out non-important information, to understand the general topic) a text because you know that you only have to read the introduction and conclusion of both the whole text and the paragraphs.
- Translation: You can read a story in a newspaper in your own language first, and then read the same story in an English newspaper. Most of the story will probably be the same, so the story in your own language will help you to prepare for reading in English. For example, it will give you vocabulary, and when you read the English story and there is some vocabulary that you don’t know, and then you can use your knowledge of the story to guess what the new vocabulary is.
- Inferencing: You can also use the strategy of reading a newspaper story in your own language first for prediction. You can predict the contents of the same story in an English newspaper. Reading to confirm your predictions is easier than reading with no background information. Click here for more information on reading newspapers.
- Prediction: As well as predicting from newspaper stories in your own language, you can predict from your knowledge of the world, you knowledge of how people think, write and talk, and your knowledge of what the writer is like. For example, if you are reading a book it is a good idea to read about the author and the contents (on the cover or at the front of the book) to help you make predictions about what he or she believes
The Listening Skills Assessment helps people see that their preferred listening approach may not be appropriate to every situation.
Effective listening approach
The listening approach I recommend is generally known as ‘active listening’. When we provide training or consulting services, we remind people that they learn far more with their ears open than with their mouth open. We encourage people to ask questions, after all the only dumb questions are the ones you don’t ask.
In effect, active listening requires holding on to your own self-control and focusing on what other parties are saying. Don’t sit there fuming waiting for a chance to zap them when they finally shut up. Paying attention to their points and emphases gives you a clearer idea of what is really important to them, what their interests are.
b. Methods of Listening
Modern methods of teaching listening skills encompass everything from interactive exercises to multimedia resources. Listening skills are best learned through simple, engaging activities that focus more on the learning process than on the final product. Whether you are working with a large group of students or a small one, you can use any of the following examples to develop your own methods for teaching students how to listen well.
Audio Segments
o You can also teach listening skills through audio segments of radio programs, online podcasts, instructional lectures and other audio messages. You should model this interactive listening process in class with your students, and then instruct them to repeat the exercise on their own. First, instruct students to prepare for listening by considering anything that they will want to learn from the content of the audio segment. Once they have written down or shared these ideas, then play the audio segment, allowing the students to take notes if helpful. Once they have gained confidence and experience, repeat this activity but instruct students to not take notes until the completion of the audio segment. You can use shorter or longer audio segments, and you can choose more accessible or more challenging material for this type of exercise.
Video Segments
o Another helpful resource for teaching listening skills are video segments, including short sketches, news programs, documentary films, interview segments, and dramatic and comedic material. As with audio segments, select the portion and length of the video segment based on the skill level of your students. With your students, first watch the segment without any sound and discuss it together. Encourage the students to identify what they think will be the content of the segment. Then, watch the segment again, this time with sound, allowing students to take notes if helpful for their skill level. After the completion of the video segment, you can have students write a brief summary of the segment, or you can take time to discuss as a group how the segment compares with the students’ expectations.
Effective listening can be defined as the process, in which a person understands, interprets and analyzes the information received through hearing. Effective or active listening skills are not only useful in understanding verbal speech, but also enable a person to derive conclusions from the speaker’s body language. Such type of effective listening in the workplace helps in reducing conflicts and develops an atmosphere where cooperation is possible. Let us have a look at the effective listening activities which help in improving the communication. Read more on active listening activities.
Effective listening skills/techniques include four basic activities viz., encouraging, paraphrasing, reflecting feelings, and summarizing. Let us understand in detail the importance of these effective listening activities.
It is the technique through which the speaker is encouraged to continue talking. The expressions like “I see” are generally used in this activity. The technique of ‘encouraging’ is an effective way to reinforce the speaker’s belief that one is listening to him keenly. It also helps the speaker understand which part of his speech is being appreciated and helps him elaborate on that particular topic.
In this process, the words spoken by the speaker are presented by the listener in different words. The benefit of paraphrasing is that the speaker gets positive feedback and ensures that whatever he has spoken is being understood by the listener. This prompts the speaker to proceed further and stops him from repeating the same statement more than once.
The activity of reflecting the feelings is similar to paraphrasing. In paraphrasing feedback about the meaning of words is given, while the feelings underlying the words are reflected in this activity; identification and sorting of the speaker’s feelings is carried out in this process. If one is listening to a client, reflecting the feelings helps the speaker understand that one empathizes with his feelings; it encourages the speaker to proceed.
As the name suggests, this activity involves summarizing the sentences of the speaker. It is somewhat similar to paraphrasing except for the fact that summarizing provides a complete and comprehensive feedback.
-Physical Response: You can listen to instructions about how to do something, and follow the instructions. Relating sounds to movements helps you remember the sounds. So does listening to the sounds many times and repeating the movements. For example you can buy an English fitness video and listen and follow the instructions, and get fit at the same time.
- Prediction: You can predict what someone is going to say by the topic of the conversation and your knowledge of that person’s opinions. Listening to confirm what you predict is easier than listening and trying to understand everything.
- Preparation: you can listen to the news in your own language, then listen to it in English. Listening in your own language will help to predict what topics and vocabulary will be in the English news. Click here for the BBC news in English.
- Motivate yourself: for example if you like movies or music, you can practise listening to
Practice – Watch and listen to video clips of Goldsmiths lectures to practise your listening and note-taking skills.
Listening for Meaning
To extract meaning from a listening text, students need to follow four basic steps:
• Figure out the purpose for listening. Activate background knowledge of the topic in order to predict or anticipate content and identify appropriate listening strategies.
• Attend to the parts of the listening input that are relevant to the identified purpose and ignore the rest. This selectivity enables students to focus on specific items in the input and reduces the amount of information they have to hold in short-term memory in order to recognize it.
• Select top-down and bottom-up strategies that are appropriate to the listening task and use them flexibly and interactively. Students’ comprehension improves and their confidence increases when they use top-down and bottom-up strategies simultaneously to construct meaning.
• Check comprehension while listening and when the listening task is over. Monitoring comprehension helps students detect inconsistencies and comprehension failures, directing them to use alternate strategies.