Rabu, 25 Maret 2009
Senin, 23 Maret 2009
How to copy a movie from Youtube and watch with FLV Player
1. Open Youtube and select the movie or clip that you want to copy. Highlight the address bar and copy the URL.
2. Open in new window: http://keepvid.com
And paste the youtube url in the column and then click “download”.
3. A Download link will show up at the bottom. Click on it to save the file.
4. When the pop-up message show up, click Save to save the file. You will see the dialog box bring you to the save dialog box, with the file name as: get_video
5. Rename the File. Delete get_video with Filename you want to. For example: Ronaldo. But make sure put “.flv” at the end. So it should be: Ronaldo.flv
6. Once the file is saved, you can check it. If you don’t have the FLV player downloaded in the computer you are using right now, the file shown will be as the picture below. It is because this computer doesn’t have supported software (FLV Player). But don’t worry. Just copy it and bring it home and copy to your computer (which I assume you have downloaded FLV Player already).
7. If you have FLV player downloaded, when you copy the file, it will show an icon
8. Double Click the file and enjoy watching it, right now, in FLV Player. If you have FLV Player downloaded, you will see like below. If you want to enlarge, just click on the FLV Player, right hand down – right at the corner, hold the mouse and pull to enlarge, as big as you want. Ok have fun and enjoy watching You Tube movies.
Apakah anda ingin mengetahui lebih banyak tentang kapal tempat anda bekerja?Apakah anda ingin mengetahui benarkah kapal anda dilindungi dengan PKB ITF?Apakah anda ingin mengetahui secara jelas tentang data keselamatan kapal anda?Jika ya maka anda dapat mengunjungi www.equasis.org untuk mendapatkan informasi online gratis tentang kapal.Diwebsite ini anda bebas mencari informasi tentang kapaltermasuk data pemiliknya dan pemeriksaan PSC terakhir. Website ini juga mencakup informasi tentang ITF, terutama menyangkut perjanjian-perjanjian kerja ITF yang masih berlaku dikapal, ringkasan data awak kapal dan tanggal maupun lokasi terakhir kapal diperiksa oleh ITF.Untuk mengakses informasi ini, anda harus mendaftar terlebih dahulu dan pendaftaran tersebut gratis serta mudah.Cara mendaftar• Masuk ke website www.equasis.org• Pilih "Registration" pada bagian sebelah kiri menu• Jika anda setuju dengan aturan dan persyaratannya, pilih "Accept" yang ada pada bagian bawah halaman• Setelah format pendaftaran muncul, masukkan username dan password anda dan masukkan nama, alamat, email dan data lainnya.• Apabila proses ini sudah anda selesaikan, maka anda akan menerima konfirmasi pendaftaran yang lengkap, sesudah itu anda dapat menggunakan layanan untuk mencari data kapal.Bagaimana cara menggunakan layananAnda dapat mencari nama, call sign atau nomor IMO suatu kapal. Apabila anda mencari suatu kapal maka yang pertama kali muncul adalah:• Ship information – name, ship type, flag, build year.• Informasi tentang kapal– nama, tipe, bendera, tahun pembangunan, data pemilik dll• Klasifikasi kapal• Informasi tentang asuransi P&ISelanjutnya anda dapat memilih menu yang ada disebelah kiri untuk mengakses:• Informasi tentang PSC – daftar pemeriksaan termasuk laporan jumlah kekurangan.• Informasi pengawakan – jumlah awak kapal sesuai laporan PSC, Konvensi ILO yang telah diratifikasi oleh negara bendera kapal, informasi tentang ITF (data-data perjanjian ITF yang masih berlaku dikapal, ringkasan teranyar data awak kapal dan tanggal maupun lokasi terakhir kapal diperiksa oleh ITF)• Sejarah kapal– bendera/kebangsaan, kepemilikan dll.• Pengoperasian kapal– data tentang kapal-kapal lainnya yang dioperasikan oleh perusahaan yang sama.
A controllable pitch propeller (CPP) or variable pitch propeller is a special type of propeller with blades that can be rotated around their long axis to change their pitch. If the pitch can be set to negative values, the reversible propeller can also create reverse thrust for braking or going backwards without the need of changing the direction of shaft revolutions.
Controllable pitch propellers (CPP) for marine propulsion systems have been designed to give the highest propulsive efficiency for any speed and load condition. When the vessel is fully loaded with cargo the propulsion required at a given ship speed is much higher than when the vessel is empty. By adjusting the blade pitch, the optimum efficiency can be obtained and fuel can be saved. Also, the controllable pitch propeller has a "vane"-stance, which is useful with combined sailing / motor vessels as this stance gives the least water resistance when not using the propeller (eg when the sails are used instead).
While it is true that a fixed pitch propeller (FPP) can be more efficient than a controllable pitch propeller, it can only be so at one rotational speed and the designed load condition. At that one rotational speed and load, it is able to absorb all the power that the engine can produce. At any other rotational speed, or any other vessel loading, the FPP cannot, either being over pitched or under pitched. A correctly sized controllable pitch propeller can be efficient for a wide range of rotational speeds, since pitch can be adjusted to absorb all the power that the engine is capable of producing at nearly any rotational speed.
The CPP also improves maneuverability of a vessel. When maneuvering the vessel the advantage of the CPP is the fast change of propulsion direction. The direction of thrust can be changed without slowing down the propeller and depending on the size of the CPP can be changed in approximately 15 to 40 seconds. The increased maneuverability can eliminate the need for docking tugs while berthing.
A reversing gear or a reversible engine is not necessary anymore, saving money to install and service these components. Depending on the main engine rotational speed and the size of the CPP, a reduction gear may still be required. A CPP does require a hydraulic system to control the position of the blades. A CPP does not produce more or less wear or stress on the propeller shaft or propulsion engine than an FPP. Therefore this will not be an argument to choose between an FPP or a CPP.
Most ships that wouldn't take a CPP are large vessels that make long trips at a constant service speed, for example crude oil tankers or the largest container ships which have so much power that a CPP is not yet designed for them. A CPP can mostly be found on harbor or ocean-going tugs, dredgers, cruise ships, ferries and cargo vessels that sail to ports with limited or no tug assistance.
At the moment the range of CPP goes up to 44000 kW (60,000 hp).
Minggu, 22 Maret 2009
Forces and motions
Motion model - forces working on the ship
Motion model - forces working on the ship
A seagoing vessel is subjected to forces from wind, waves and current as well as from forces generated by the propulsion system.
The vessel’s response to these forces, i.e. its changes in position, heading and speed, is measured by the position-reference systems, the gyrocompass and the vertical reference sensors. Reference systems readings are corrected for roll and pitch using readings from the vertical reference sensors. Wind speed and direction are measured by the wind sensors.
The K-Pos dynamic positioning control system calculates the forces that the thrusters must produce in order to control the vessel’s motion in three degrees of freedom - surge, sway and yaw - in the horizontal plane.
The K-Pos system is designed to keep the vessel within specified position and heading limits, and to minimise fuel consumption and wear and tear on the propulsion equipment. In addition, the K-Pos system tolerates transient errors in the measurement systems and acts appropriately if a fault occurs in the thruster units.
This system offer a full range of dynamic positioning systems to keep the vessel within specified position and heading limits. These systems are designed to minimise fuel consumption and wear and tear on the propulsion equipment. The K-Pos operator station is available in single, dual or triple configurations. More than 1200 dynamic positioning - DP systems have been supplied to oil and gas related vessels.
Typical applications for dynamic positioning systems
* Drill ships
* Cable-laying vessels
* Crane vessels
* Cruise ships
* Diving support vessels
* Maritime research vessels
* Mega yachts
* Mine sweepers
* Pipe laying vessels
* Platform supply vessels
* Rock dumping vessels
* Survey ships
* Supply vessels
* Shuttle tankers
The dynamic positioning systems controller
The dynamic positioning systems controller calculates the resulting force to be exerted by the thrusters/propellers in order for the vessel to remain on station. In station-keeping operations, the K-Pos Controller can be working in several of the following modes, all with special characteristics:
High Precision control: The High Precision dynamic positioning systems control provides high accuracy station-keeping in any weather condition at the expense of power consumption and exposure to wear and tear of machinery and thrusters.
Relaxed control: The Relaxed dynamic positioning systems control uses the thrusters more smoothly, at the expense of station-keeping accuracy. However, this type of control cannot guarantee that the vessel will stay within its operational area, and is mainly applicable for calm weather conditions.
Green DP® control: The Green DP® dynamic positioning systems control uses very different control technology, called non-linear Model Predictive Control, which is optimised for precise area keeping with minimum power consumption. The Green DP® control is applicable in all weather conditions. The transition between K-Pos dynamic positioning system controller modes is bumpless.
Stand alone or integrated systems
* Stand-alone dynamic positioning systems interface with other systems, such as power plant and thrusters, via conventional signal cables and serial lines
* Integrated dynamic positioning systems communicate with other KONGSBERG systems such as K-Chief (Marine Automation) and K-Thrust (Thruster Control) via a dual Ethernet LAN
Basic forces and motions
A seagoing vessel is subject to the forces of wind, waves and current and those generated by the propulsion system. In a dynamic positioning system the response to these forces in terms of changes in position, heading and speed, are measured by position-reference systems, gyrocompass and vertical reference sensors. The dynamic positioning system calculates the forces that the thrusters must produce in order to control the vessel's motion.
A ship is considered to have six degrees of freedom in its motion. Three of these involve translation:
* Surge (forward / astern)
* Sway (starboard / port)
* Heave (up / down)
The other three are rotation:
* Roll (rotation about surge axis)
* Pitch (rotation about sway axis)
* Yaw (rotation about heave axis)
Dynamic positioning - DP systems are concerned primarily with control of the ship in the horizontal plane, i.e. the three axes surge, sway and yaw.
Explain about him/her self
Job after finished school
Last job, position, his/her role – stressed to field job or hands on job
Job that mostly enjoyed, why
His/her strength and weaknes (4)
Kind supervisor he/she like to work with
Friend comments about him/her
Working environment he/she prefer to work in
Reason want to work with this company
Knowledge about company business or position apply
His/her imagination about the job/position
Explain what will he/she does if see something that being in-properly done
When the time he/she takes initiatives to the right things and do it right
Most creative achievement at school and at work
His/her motivators and de-motivators in a job
How does he/she sees him/her self in five years from now
The time when he/she had practical hands on job. Give an example
His/her role on that job
When did he/she feel realy under pressure in the job
How did it come about
How did he/she deals whit it