Monday, May 25, 2009

Pekerja TI: Jabatan Keren, Gaji Pas-pasan

Penulis: Dimitri Mahayana - detikinet

Kolom Telematika - "Iya nih gaji IT Indo ironis, jauh banget dibanding gaji IT luar, gw aja ditertawain dengan gaji indo ma orang luar, ironis deh, (NH)."


"Operator warnet aja cuma digaji Rp 300 ribu, sudah kerja 10 tahun tapi perusahaan tidak care (Aroep Manhattan)."


Demikian bunyi beberapa dari banyak komentar pembaca detikINET atas berita yang ditulis 8 Mei lalu, berjudul: "SDM IT Lari ke luar negeri, Pemerintah Diminta Waspada".


Keluh kesah di atas, rasanya, bukan sekali-dua kali terdengar. Sudah sejak lama, praktisi teknologi informasi (TI) di Indonesia memang diperlakukan minim, sangat timpang dengan apa yang diterima teknisi serupa negara tetangga.


Hasil survei kami tahun lalu menunjukkan, gaji seorang system developement di Indonesia mencapai US$4.808 per tahun alias sekitar Rp52 juta atau Rp4,4 juta per bulan. Padahal, tugas mengembangkan sistem TI, tentu rumit bukan main.


Bandingkan untuk posisi serupa di India US$11.805, Malaysia (US$17.651), Filipina (US$10.545), Thailand (US$17.545), India (US$11.805), Singapura (US$35.245), Hongkong (US$46.769), dan Australia (US71.484).Untuk posisi project management pekerja TI, remunerasi yang diperoleh di Indonesia US$8.580.


Angka ini separuh dari jabatan yang sama di India, 1/6 di Singapura, dan 1/10 di Australia (Daftar lengkap, lihat tabel di bawah). Akan tetapi, bagaimanapun, berkeluh kesah saja tidak cukup. Demi progresivitas dan visi perbaikan yang kontinyu, alangkah baiknya jika apreasiasi kurang ini justru dijadikan momentum intropeksi.


Kita awali soal mengkaji diri ini dengan melihat hasil survei Sharing Vision kepada 24 responden dan 14 perusahaan pada April lalu menunjukkan, 43% sumber daya TI yang ada dinilai kurang kompoten.Selain tidak kompeten, 14% responden juga mengaku memiliki sumber daya TI yang tidak sesuai dengan kebutuhan organisasi.


Karenanya, 14% dari mereka merasakan tingkat turnover pekerja TI yang tinggi di perusahaan.32% responden mengaku pula sulitnya mencari tenaga ahli TI anak bangsa di tanah air--hal yang kemudian memicu banyaknya konsultan bermata biru di tanah air yang bayarannya berkali-kali lipat tadi. Secara teknis-administratif, pekerja TI di Indonesia yang telah memiliki sertifikasi baru mencapai 28,60% sementara sisanya belum memiliki karena masih ada anggapan tidak pentingnya sertifikasi semacam CCNA, MCP, PMP, dan lainnya.Padahal, mengacu survei HR Certification Institute 2008, pekerja TI yang sudah tersertifikasi tadi, terbukti memberi dampak positif pada finansial perusahaan dan otomatis membuat mereka lebih dipercaya perusahaan.Dengan demikian, mengacu hasil-hasil riset tadi, remunerasi yang minim ini, ternyata banyak disebabkan pula oleh belum tingginya tingkat kompetensi yang dimiliki. Kemampuan yang ada belumlah optimal.


Remunerasi rendah, sedikit-banyak, disumbangkan oleh belum tajamnya kompetensi yang dimiliki yang membuat ketergantungan sumber daya eksternal masih ada, misalnya. Akibatnya, daya tawar pekerja TI belum begitu tinggi.Kalau mau jujur, belum optimalnya kemampuan ini sendiri mayoritas 'disumbangkan' perusahaan tempat mereka bernaung. Betapa tidak. Alokasi anggaran training perusahaan mayoritas hanya di angka kurang dari 3% dari bea divisi TI.


Perusahaan masih tampak ogah mengeluarkan biaya besar dalam meningkatkan kemampuan pekerja TI. Alih-alih meningkatkan kemampuan, mereka lebih berharap karyawan mau belajar otodidak yang serba gratis.Maka, daripada terus berkubang dalam komplain remunerasi, sudah seharusnya pekerja TI (sekaligus perusahaannya) tak berhenti memperbaiki kompetensi miliknya, sehingga ke depan tak ada lagi kisah satir pekerja TI: Jabatan keren, gaji pas-pasan!Dimitri Mahayana adalah dosen ITB dan Chief of SHARING VISION. Penulis bisa dihubungi melalui email redaksi@detikinet.com.( rou / rou )

Sunday, May 24, 2009

Information Theory : Entropy

Berikut video tutorial tentang Entropy

Huffman Codes

Salah satu materi pada mata kulia Teori Informasi dan Pengkodean Sumber adalah Huffman Codes. Berikut video tutorial yang diambil dari YouTube.com



Information Theory : Coding

Berikut video tutorial mata kuliah "Teori Informasi dan Pengkodean Sumber" yang dikutip dari YouTube.com
Semoga Bermanfaat




WiFi - Wireless Fidelity

Wifi, stands for Wireless Fidelity is a type of wireless networking. It's also known as 802.11. The advantages of wifi is easy to setup and inexpensive. With Wifi the information is travel over the air using the radio waves. In fact, communication across a wireless network is a lot like two-way radio communication. Here's what happens:

  1. A computer's wireless adapter translates data into a radio signal and transmits it using an antenna.
  2. A wireless router receives the signal and decodes it. It sends the information to the Internet using a physical, wired Ethernet connection.
The process also works in reverse, with the router receiving information from the Internet, translating it into a radio signal and sending it to the computer's wireless adapter. The radio waves used in WiFi is higher than the frequencies used for cell phones, walkie-talkies and televisions. The higher frequensi used, more data can carried by the signal. It use 2,4GHz or 5 GHz frequency. There are several versions of 802.11 Standard as belows :



  • 802.11a, use 5 GHz frequency, up to 54 Mbps bandwidth. Using OFDM (Orthogonal Frequency Division Multiplexing), a more efficient coding technique that splits that radio signal into several sub-signals before they reach a receiver. This greatly reduces interference.
  • 802.11b, use 2,4 GHz frequency, up to 11 Mbps. Using CCK (Complimentary Code Keying).
  • 802.11g, use 2,4 GHz frequency, up to to 54 Mbps. Faster than 802.11b, using OFDM.
  • 802.11n, use 2,4 GHz frequency, it is reported can achieve speeds as high as 140 megabits per second.
To build wireless network we need wireless router and wireless adapter.


  • Wireless Adapter














It is the picture of USB and PCMCIA wireless adapter for WiFi. This adapter can plug into your PC's usb or PCMCIA slot.

  • Wireless Access Point


As with wireless adapters, many routers can use more than one 802.11 standard. 802.11b routers are slightly less expensive, but because the standard is older, they're slower than 802.11a, 802.11g and 802.11n routers. Most people select the 802.11g option for its speed and reliability.

IP Address Explained

IP Address (Internet Protocol Address): This number is an exclusive number all information technology devices (printers, routers, modems, et al) use which identifies and allows them the ability to communicate with each other on a computer network. There is a standard of communication which is called an Internet Protocol standard (IP). In laymans terms it is the same as your home address. In order for you to receive snail mail at home the sending party must have your correct mailing address (IP address) in your town (network) or you do not receive bills, pizza coupons or your tax refund. The same is true for all equipment on the internet. Without this specific address, information cannot be received. IP addresses may either be assigned permanently for an Email server/Business server or a permanent home resident or temporarily, from a pool of available addresses (first come first serve) from your Internet Service Provider. A permanent number may not be available in all areas and may cost extra so be sure to ask your ISP.

Domain Names (Domain Name System-DNS): This allows the IP address to be translated to words. It is much easier for us to remember a word than a series of numbers. The same is true for email addresses.

For example, it is much easier for you to remember a web address name such as whatismyip.com than it is to remember 67.192.10.3 or in the case of email it is much easier to remember anonymous@whatismyip.com than anonymous@67.192.10.3
Dynamic IP Address: An IP address that is not static and could change at any time. This IP address is issued to you from a pool of IP addresses allocated by your ISP or DHCP Server. This is for a large number of customers that do not require the same IP Address all the time for a variety of reasons. Your computer will automatically get this number as it logs on to the network and saves you the trouble of having to know details regarding the specific network configurations. This number can be assigned to anyone using a dial-up connection, Wireless and High Speed Internet connections. If you need to run your own email server or web server, it would be best to have a static IP.

Static IP Address: An IP address that is fixed and never changes. This is in contrast to a dynamic IP address which may change at any time. Most ISP’s a single static IP or a block of static IP’s for a few extra bucks a month.

IP version 4: Currently used by most network devices. However, with more and more computers accessing the internet, IPv4 addresses are running out quickly. Just like in a city, addresses have to be created for new neighborhoods but, if your neighborhood gets too large, you will have to come up with an entire new pool of addresses. IPv4 is limited to 4,294,967,296 addresses.

IP version 5: This is an experimental protocol for UNIX based systems. In keeping with standard UNIX (a computer Operating System) release conventions, all odd-numbered versions are considered experimental. It was never intended to be used by the general public.
IP version 6: The replacement for the aging IPv4. The estimated number of unique addresses for IPv6 is 40, 282, 366, 920, 938, 463, 463, 374, 607, 431, 768, 211, 456.
The old and current standard of addresses was this: 192.168.100.100 the new way can be written different ways but means the same and are all valid:
* 1080:0000:0000:0000:0000:0034:0000:417A
* 1080:0:0:0:0:34:0:417A
* 1080::34:0:417A
***re-posted by BR

The Fourier Transform