Gebrakan Dunia Open Source

http://herman.gubukopensource.org/2007/05/09/open-source-untuk-perusahaan/

Pada saat ini banyak perusahaan-perusahaan besar yang telah mengunakan Software bebasis Open Source sebagai penunjang kinerja dari perusahaannya. Hal ini sangat memungkinkan karena sangat banyak Software yang berbasis Open Source telah memenuhi kreteria yang dibutuhkan oleh perusahaan.

 

Kompor Tenaga Sampah

Pada zaman globalisasi ini mayoritas industri baik itu industri rumah tangga maupun industri kecil menggunakan kompor sebagai alat masak utaman dalam proses memasak. Hal ini disebabkan selain memberikan banyak kemudahan dalam memasak ternyata efisiensi kompor dalam penggunannya memberikan dampak positif bagi penggunaan Sumber Daya Alam yaitu sebagai bahan bakar fosil.

 

Kompor dan Burner Berbahan Bakar Air

Teknologi Konversi Air menjadi Api dan Aplikasinya

  Indonesia memiliki jumlah penduduk sekitar 220 juta orang dan sebagain besar
penduduknya tinggal di pedesaan. Mereka membutuhkan bahan bakar minyak tanah
untuk kompor dan penerangan dengan jumlah sekitar 10 juta kilo liter per tahun.
Biaya produksi minyak tanah saat ini sekitar Rp. 6000 / liter sedangkan harga
yang dikenakan kepada penduduk adalah hanya Rp. 2000/ liter sehingga subsidinya
sekitar Rp. 4000 per liter. Jumlah subsidi minyak tanah per tahun dengan
demikian sekitar Rp. 40 trilyun. Jumlah subsidi ini sangat besar sehingga
sangat membebani biaya operasional  pemerintah. Salah satu alternatif untuk
mengurangi subsidi itu adalah mencari sumber alternatif energi yang murah dan
mudah diaplikasikan di pedesaaan untuk mengganti minyak tanah.

 

 

Kompor Minyak-Air Hemat dan Ramah Lingkungan

KETIKA Indonesia dilanda krisis ekonomi dan berlanjut hingga muncul gejolak minyak tanah, harga minyak bersubsidi melambung, barangnya pun sulit didapat. Masyarakat makin tercekik karena harga kebutuhan pokok juga melambung.

SUPARMIN memperlihatkan cara kerja kompor hemat bertenaga air atau brazier water fuel (BWF). Kompor BWF selain ekonomis dan efektif dilengkapi dengan korek elektrik juga ramah lingkungan karena tak menimbulkan asap hitam.*EVIYANTI/”PR”

Di sejumlah tempat ditemukan antrean manusia, terutama ibu rumah tangga yang berusaha untuk mendapatkan minyak tanah. Mereka panik karena tidak bisa memasak. Bahkan, sebagian warga ekonomi lemah akhirnya beralih menggunakan kayu bakar. Pemandangan mengenaskan ini nyaris tidak pernah terjadi selama 30 tahun terakhir.

“Krisis ini berlanjut dengan terjadinya krisis elpiji untuk bahan bakar kompor gas, yang biasa digunakan oleh keluarga menengah ke atas. Sebenarnya kenyataan pahit ini sudah terjadi, bahkan sudah berkali-kali dan berlanjut,” katanya.

 

Protect your wireless network from hackers

TALES FROM THE CRYPTOGRAPHER

It would send chills down your spine to learn how easy it is for others to connect to your Wi-Fi network and put your computers under their spell. If your computer has been acting funny lately, working fine at times while slowing to a crawl at others, it may have crossed over to the dark side and could be spamming your friends and scamming your parents.

 

How not to get hacked

It’s important to know how not to get hacked. The following details the layers of security you can place on your wireless network, as well as the effectiveness of each layer.

 

Improve wireless router signal strength

THE MISSING LINK

Once upon a midnight dreary, while pondering work for a meeting the next day, you decide you’ve had enough of your desk. Henceforth, you declare, you’ll work anywhere in your house your heart desires: the sofa, the bedroom, the backyard, the kitchen, the bathroom (well, maybe not the bathroom). So you buy a wireless laptop, install a wireless router, and after you check that it all works, give yourself a pat on the back. The next day you discover that your wireless network covers only half your house and that both your living room and your kitchen are shrouded in digital darkness. The package the router came in claims a range of up to 250 feet, but your Wi-Fi signal barely seems to penetrate into the next room. You return the router for a new one, only to discover that the replacement unit leaves you with the same dreadfully cramped coverage area. Condemned once again to spend your most productive hours at the desperate solitude of your desk, you acquiesce, take a seat, and start typing.

 

Set up wireless file and printer sharing

Here’s how to set up file and printer sharing on a wireless network so that these shared resources can be available to all printers on the network.

This lesson pertains primarily to Windows XP. For other versions of Windows, click here. For Mac instructions, click here.

 

Improve your cell phone signal

Your phone and your network could interfere with each other if they’re both operating at 5.8GHz, but you’re in luck. Devices that operate at 5.8GHz typically enjoy a lot more elbow room than devices that operate at 2.4GHz. That’s because 802.11a networking gear, which uses the 5.8GHz band, has eight nonoverlapping channels to choose from for indoor use (and four more for outdoor point-to-point connections). In contrast, 2.4GHz 802.11g devices have only three nonoverlapping channels. The extra wiggle room in the 5.8GHz band makes it much easier to keep devices operating at that frequency out of each other’s way. The trick is to use separate nonoverlapping channels for your network and your phone. Check the user manual for your wireless router or access point for instructions on how to adjust the channel of your wireless network.

http://help.cnet.com/Networking_and_Wi_Fi/9602-12576_39-0.html?messageID=2505402&tag=tip-2505402&kw=Networking+AND+and+AND+Wi+AND+Fi&nodeId=3243

 

Optimize your router for a stable wireless connection

HOUSE OF SCREAMING RADIOS

Say you’re approaching the end of a large download, and in the middle of a Skype call to clients in China, without warning, your Wi-Fi connection drops, leaving your download and VoIP call in limbo. You retry the wireless connection, but your router, though blinking contentedly in your den, seems to be off the air. Two hours later, for no apparent reason, your Wi-Fi connection miraculously resurfaces.

Wireless networking can be a blessing and a curse: great when it works and a mind-numbing frustration when it doesn’t. A common complaint among many who have moved to Wi-Fi is that their wireless connection mysteriously fades in and out.