Abstract: An ion source includes a magnetic field portion and an electrode. The magnetic field portion has an open side directing toward a workpiece and a closed side. An inner magnetic pole and an outer magnetic pole are disposed to be spaced apart from each other at the open side and the closed side is connected to a magnetic core, so that an accelerating closed loop of plasma electrons is formed at the open side. The inner magnetic pole has a gas injection portion configured to supply gas toward the accelerating closed loop. The electrode is disposed at a lower portion of the acceleration closed loop with being spaced apart from the magnetic field portion.

Abstract: A Radio Network Controller (RNC) in a high speed wireless communication system includes an apparatus to perform method for changing a serving cell in the high speed wireless communication system. The RNC receives UpLink (UL) cell change determination information representing UL channel states from a serving Base Station (BS) and a target BS. The UL is received if a UL soft handover of a Mobile Station (MS) is initiated depending on a DownLink (DL) channel quality of the MS. The RNC can determine UL cell change timing of the MS using the UL cell change determination information. Thereafter, the RNC can send an instruction of a UL cell change of the MS to the serving BS and the target BS.

Abstract: An ion beam source includes a magnetic field unit including a first side facing a target object to be treated and a second side, where the first side is opened and the second side is closed, and the first side includes a plurality of magnetic pole portions arranged at predetermined intervals with an N-pole and an S-pole alternatively or with same magnetic poles and configured to form a closed loop of plasma electrons and an electrode unit arranged at a lower end of the closed loop. The ion beam source is configured to rotate the plasma electrons within a process chamber along the closed loop, to generate plasma ions from an internal gas within the process chamber, and to provide the plasma ions to the target object.

Abstract: An ion beam source includes a magnetic field unit including a first side facing a target object to be treated and a second side, where the first side is opened and the second side is closed, and the first side includes a plurality of magnetic pole portions arranged at predetermined intervals with an N-pole and an S-pole alternatively or with same magnetic poles and configured to form a closed loop of plasma electrons and an electrode unit arranged at a lower end of the closed loop. The ion beam source is configured to rotate the plasma electrons within a process chamber along the closed loop, to generate plasma ions from an internal gas within the process chamber, and to provide the plasma ions to the target object.

Abstract: The present invention provides a composition for surface modification of a heat sink, the composition including: 0.01 to 10 parts by weight of an organic titanium compound; 0.01 to 5 parts by weight of an organic silane compound; 0.1 to 10 parts by weight of an organic acid; 0.01 to 5 parts by weight of a sequestering agent; and 0.1 to 10 parts by weight of a buffer with respect to 100 parts by weight of distilled water. The composition of the present invention provides excellent adhesion strength with prepreg, and improve heat releasing performance.

Abstract: A Radio Network Controller (RNC) in a high speed wireless communication system includes an apparatus to perform method for changing a serving cell in the high speed wireless communication system. The RNC receives UpLink (UL) cell change determination information representing UL channel states from a serving Base Station (BS) and a target BS. The UL is received if a UL soft handover of a Mobile Station (MS) is initiated depending on a DownLink (DL) channel quality of the MS. The RNC can determine UL cell change timing of the MS using the UL cell change determination information. Thereafter, the RNC can send an instruction of a UL cell change of the MS to the serving BS and the target BS.

Abstract: The present invention provides a composition for surface modification of a heat sink, the composition including: 0.01 to 10 parts by weight of an organic titanium compound; 0.01 to 5 parts by weight of an organic silane compound; 0.1 to 10 parts by weight of an organic acid; 0.01 to 5 parts by weight of a sequestering agent; and 0.1 to 10 parts by weight of a buffer with respect to 100 parts by weight of distilled water. The composition of the present invention provides excellent adhesion strength with prepreg, and improve heat releasing performance.

Abstract: A printed circuit board and a manufacturing method of the same. The method includes forming a circuit board by selectively positioning a heat release layer among multiple insulation layers that have circuit patterns formed on their surfaces, perforating a through-hole that penetrates through one side and the other side of the circuit board, forming a metal film over the heat release layer exposed at an inner wall surface of the through-hole, and forming a plating layer by depositing a conductive metal over an inner wall of the through-hole. By having the heat release layer selectively inserted inside the circuit board, the heat releasing effect may be improved, and the bending strength may be increased. Moreover, a reliable electrical connection can be implemented between the heat release layer and the circuit pattern, making it possible to utilize the heat release layer as a power supply layer or a ground layer.

Abstract: Disclosed is a radiant heat printed circuit board, which has improved heat-radiating properties and reliability, and a method of fabricating the same.

Abstract: Disclosed is a method for optimizing hard handoffs, e.g., between Mobile Switching Centers in a CDMA network. In the method, preliminary conditions for a hard handoff test are first set up. Idle handoffs are then performed in a hard handoff area, log data for the idle handoffs is analyzed and adjustments to communication equipment are made accordingly. Next, hard handoff tests are conducted in a traffic state in the hard handoff area. Log data of the hard handoff tests are analyzed and further adjustments to communication equipment are made if hard handoff performance during the hard handoff tests is determined to be unsatisfactory. A final hard handoff confirmation test is then performed in the hard handoff area following the latter communication equipment adjustments.

Abstract: A method for controlling forward power utilizing 13K erasure indicator bit in a CDMA system improves the call quality and subscriber capacity by setting a nominal_gain, a maximum traffic channel gain (max_tx_gain), a minimum traffic channel gain (min_tx_gain), and a reduction rate in an optimal combination, wherein the nominal_gain is initial gain of primary traffic channel, the max_tx_gain is maximum gain of traffic channel, the min_tx_gain is minimum gain of traffic channel, and the reduction rate represents a cycle rate to decrease the digital gain by 1 for the received frames. The nominal_gain satisfies E b N o = E c I o + P .