Abstract: A semiconductor device, includes at least a first memory chip, which includes at least a first buffer connected to receive an input signal and a reference voltage; at least a first reference voltage generator configured to output a reference voltage based on a first control code; and at least a first self-training circuit for determining an operational reference voltage to use during a normal mode of operation of the semiconductor device. An output from the first buffer is input to the first self-training circuit, the first control code is output from the first self-training circuit into the first reference voltage generator, and the first buffer, the first self-training circuit, and the first reference voltage generator form a loop.

Abstract: There are provided an acoustic resonator module, and a method of manufacturing the same. An acoustic resonator module includes a resonating part disposed on a substrate and an inductor electrically connected to the resonating part, and having at least a portion disposed to be spaced apart from the substrate.

Abstract: A semiconductor chip, a test system, and a method of testing the semiconductor chip. The semiconductor chip includes a pulse generator configured to generate a test pulse in response to a test request; a logic chain comprising a plurality of logic devices serially connected to each other and transferring the test pulse sequentially; and a detector configured to detect a logic level of an output signal of each of the logic devices and output a detection result indicating a degree of an inter-symbol interference (ISI).

Abstract: An equalizer circuit may include an equalizer controller and a plurality of equalizers. The equalizer controller may prove separate sets of enable signals, delay control signals and voltage control signals to the separate equalizers based on a control signal. The equalizers provide equalizer signals to separate connection nodes between separate pairs of logic circuits. An equalizer may be selectively activated based on a received enable signal. An equalizer may include a delay control circuit and a voltage control circuit. The delay control circuit may delay a received transfer signal to generate a delayed transfer signal based on a received delay control signal. The voltage control circuit may generate an equalizer signal based on the delayed transfer signal and a received voltage control signal. The equalizer circuit may reduce inter-symbol interference in the integrated circuit based on providing the equalizer signals to the connection nodes between the logic circuits.

Abstract: A technical object is to provide an apparatus for attaching or detaching an insert of a cutting tool, which enables easy and fast replacement of the insert. To this end, the apparatus for attaching or detaching the insert to or from a body of the cutting tool is provided in the body of the insert and includes an insert receiving portion formed in the body of the cutting tool to receive the insert therein, a wedge receiving portion formed in the body of the cutting tool continuously after the insert receiving portion, a wedge received in the wedge receiving portion, and a rotating unit configured to rotate the wedge in a first direction that faces the insert receiving portion, or to a second direction opposite the first direction.

Abstract: A pressure sensor includes a sensor, an elastic support portion, a membrane, and a pressure detector. The sensor is accommodated in a frame of a base substrate. The elastic support portion is elastically connecting the sensor to the frame. The membrane is disposed on a surface of the sensor. The pressure detector is disposed on the membrane and configured to detect a variation in pressure based on a movement of the membrane.

Abstract: An actuator unit includes a driving part connecting a fixing part and a support part which are disposed to be substantially coplanar; an actuator which is configured to deform the driving part to drive the support part out of the coplanar relationship with respect to the fixing part; and a sensor which is configured to measure a displacement amount or deformation of the driving part.

Abstract: An organic light emitting device including: a first electrode, a hole injection layer on the first electrode, a hole transport layer on the hole injection layer, an organic light emitting layer on the hole transport layer, a first electron transport layer on the organic light emitting layer, a second electron transport layer on the organic light emitting layer, an electron injection layer on the second electron transport layer and a second electrode on the electron injection layer, where the first electron transport layer includes a first material for improving a thermal stability, a second material for improving a luminous efficiency and a third material for reducing a driving voltage, and the second electron transport layer is laminated with the first electron transport layer, and the second electrode faces the first electrode.

Abstract: The objective of the present invention is to provide a cutting insert which reduces cutting load and can be accurately positioned at a coupling part of a cutting tool even if cutting edges are broken or deformed. To this end, the cutting insert of the present invention includes an upper surface, a lower surface, a plurality of lateral surfaces connecting the upper surface with the lower surface, and a plurality of upper cutting edges formed between the plurality of lateral surfaces and the upper surface.

Abstract: Provided is a composition for preventing or treating osteoporosis. The composition contains an ibandronic acid, or a pharmaceutically acceptable salt thereof, or a hydrate thereof, and vitamin D. The composition has uniform medicinal effects by minimizing the differences in physical properties between ibandronic acid, or the pharmaceutically acceptable salt thereof, or the hydrate thereof, and vitamin D.

Abstract: An organic light emitting device including: a first electrode, a hole injection layer on the first electrode, a hole transport layer on the hole injection layer, an organic light emitting layer on the hole transport layer, a first electron transport layer on the organic light emitting layer, a second electron transport layer on the organic light emitting layer, an electron injection layer on the second electron transport layer and a second electrode on the electron injection layer, where the first electron transport layer includes a first material for improving a thermal stability, a second material for improving a luminous efficiency and a third material for reducing a driving voltage, and the second electron transport layer is laminated with the first electron transport layer, and the second electrode faces the first electrode.

Abstract: Disclosed are novel ?-galactosylceramide derivatives, pharmaceutically acceptable salts thereof, preparation methods thereof, and pharmaceutical compositions for use in an immune adjuvant containing the same as an active ingredient. The derivatives, in which the amide moiety of ?-GalCer is bioisosterically replaced with a triazole moiety, direct cytokine secretion toward IL-4 rather than IFN-?and thus can be used as a therapeutic for autoimmune diseases regulated by IL-4, such as type 1 diabetes and multiple sclerosis.

Abstract: The present invention is an integrated authentication system managing a process of conclusion of an electronic contract by communicating the electronic contract concluded at a mobile terminal with an integrated authentication server, the integrated authentication system comprises the electronic contract for electronically concluding a contract; the mobile terminal for downloading the electronic contract from the integrated authentication server, concluding a contract electronically, and transferring the concluded electronic contract to the integrated authentication server; and the integrated authentication server for transferring the electronic contract to the mobile terminal, receiving the electronic contract concluded from the mobile terminal, and managing the process of concluding the electronic contract, wherein the integrated authentication server comprises: a form-design unit for making an image of the electronic contract, and designing the form of the electronic contract; a log-in managing unit for aut

Abstract: The present disclosure relates to a structure for reducing thermal displacement of a machine tool structure, and more particularly, to a structure for reducing thermal displacement of a machine tool structure capable of reducing thermal displacement of a structure in order to prevent processing precision from deteriorating due to deformation of a fixed structure by heat generated at a part where the fixed structure and a movable structure perform frictional motion together with each other. Accordingly, in order to resolve a technical problem, an object of the present invention is to provide a structure for reducing thermal displacement of a machine tool structure capable of preventing a structure from being deformed and distorted by reducing a temperature deviation over the entire structure by rapidly transferring heat to other parts when a temperature of a specific part of the structure is raised.

Abstract: A fluid pressure liquid lens includes: a fluid pressure driving portion which is configured to include a first cavity, a fluid pressure generating groove, and an actuator generating a fluid pressure on liquid so as to adjust the fluid pressure by using the actuator; a first transparent elastic membrane which is disposed on an upper surface of the fluid pressure driving portion to seal an upper portion of the first cavity of the fluid pressure driving portion and of which the curvature is changed according to the fluid pressure of the liquid; and a transparent substrate which is disposed on a lower surface of the fluid pressure driving portion to seal a lower portion of the first cavity of the fluid pressure driving portion and which is made of transparent material passing through incident light, wherein a focal length is adjusted by using the fluid pressure generated by the actuator.

Abstract: A variable focus liquid lens includes: a lens barrel which is configured to include a first cavity to contain first and second liquids which are not mixed with each other in upper and lower portions of the first cavity, respectively; a fluid pressure driving unit which is configured to include a second cavity, a fluid pressure generating groove, and an actuator generating a fluid pressure on the second liquid so as to adjust the fluid pressure of the second liquid by using the actuator; a first transparent elastic membrane sealing an upper portion of the first cavity of the lens barrel; and a conductive transparent substrate sealing a lower portion of the second cavity of the fluid pressure driving unit. The focal length is adjusted by changing the curvatures of the surfaces of the first and second liquids and the curvature of the first transparent elastic membrane by a voltage.

Abstract: The present invention relates to a time-delayed sustained release pharmaceutical composition for oral administration, which comprises an immediate release phase and a prolonged sustained release phase, wherein said immediate release phase and prolonged sustained release phase respectively comprise Dapoxetine therein as an active ingredient.

Abstract: The present invention relates to a composition for preventing or treating osteoporosis which comprises an ibandronic acid, or a pharmaceutically acceptable salt thereof, or a hydrate thereof, and vitamin D. The present invention relates to a composition for preventing or treating osteoporosis which has uniform medicinal effects by minimizing the differences in physical properties between ibandronic acid, or the pharmaceutically acceptable salt thereof, or the hydrate thereof, and vitamin D.

Abstract: Provided is a liquid lens capable of adjusting a focus by using an electrical signal and/or a fluid pressure.

Abstract: A time-domain voltage comparator for an analog-to-digital converter includes a first voltage-to-time converter configured to be connected in series with at least one time delay cell and convert an input voltage into time information; a second voltage-to-time converter configured to be connected in series with at least one time delay cell and convert an input voltage into time information; and a phase comparator configured to determine a difference between times outputted from the first voltage-to-time converter and the second voltage-to-time converter.