Abstract: A routing method of a wireless network system is provided. Paths of the wireless network system are divided into down-stream and up-stream paths. The up-stream paths are reset for each period, or whenever a network is changed, or whenever transmission of data fails more than a predetermined number of times. Accordingly, it is possible to secure an average lifetime of a wireless network system by previously preventing a bottleneck from occurring at a specific node, increase a transmission speed of data by reducing the hop count to the sink node connected to the information collector, and reduce power consumption of a battery.

Abstract: Disclosed is a wireless sensor network with a linear structure capable of bidirectional communication. The wireless sensor network includes a plurality of nodes linearly connected from a sink node to a terminal node by connecting each node to a single upper-level node and a single lower-level node, each node has an active period for transmitting/receiving data to/from its upper-level node and lower-level node, the active period includes a downstream duration for transmitting data/commands from the sink node to the terminal node and an upstream duration for transmitting data/commands from the terminal node to the sink node, and each of the upstream and downstream durations sequentially includes RX, TX, and ACK intervals, so that bidirectional communication between the sink node and the terminal node can be performed within a single active period.

Abstract: The present invention is to provide a method and apparatus for multiplexing a sync node and a gateway of a wireless sensor network, which is capable of allowing communication of the wireless sensor network to be normally performed by multiplexing paths of the sync node and the gateway of the wireless sensor network even in the case where any one of the sync node and the gateway abnormally operates and by transmitting upstream data and downstream data through a path selected among the duplexed paths according to characteristics of the wireless sensor network.

Abstract: Provided is a semiconductor light emitting device. The semiconductor light emitting device comprises a first conductive type semiconductor layer, an active layer, and a second conductive type semiconductor layer. The active layer comprises a first active layer, a second active layer, an electron barrier layer on the first conductive type semiconductor layer. The first active layer and the second active layer comprise a quantum well layer and a quantum barrier layer. The electron barrier layer is formed between the first active layer and the second active layer. The second conductive type semiconductor layer is formed on the active layer.

Abstract: Provided is a semiconductor light emitting device and a method for manufacturing the same. The semiconductor light emitting device comprises: a first conductive type semiconductor layer; an active layer on the first conductive type semiconductor layer; an undoped semiconductor layer on the active layer; a first delta-doped layer on the undoped semiconductor layer; and a second conductive type semiconductor layer on the first delta-doped layer.

Abstract: Provided is an apparatus and method for detecting a malicious file that attempts to initiate communication in a mobile terminal without a user's approval. The method of detecting a malicious file in a mobile terminal includes: determining whether a file to be examined is an executable file; when the file is an executable file, examining whether the file is a malicious file that can cause unapproved communication based on at least one predetermined examination condition; and outputting the result of examining whether the file is the malicious file. Accordingly, an attack caused by a new type of malicious code can be coped with.

Abstract: Provided are a semiconductor light emitting device and a method of manufacturing the same. The semiconductor light emitting layer comprises a first conductive type semiconductor layer, an active layer on the first conductive type semiconductor layer, and a second conductive type semiconductor layer on the active layer. The active layer comprises a quantum well layer, a quantum barrier layer, and a dual barrier layer.

Abstract: A recordable and/or rewriteable recording medium for storing still picture data, and recording and/or reproducing method and apparatus therefor. The recording medium stores still picture group information for grouping a plurality of still pictures in order to manage the still picture at a group level, and stores audio group information for grouping additional audio data added to the still picture data after the still picture data are recorded. Therefore, large-capacity still picture data and additional audio data added thereto can be recorded using a minimum amount of management information. Further, during reproduction, data can be displayed and edited in units of the respective still pictures. Also, it is possible to cope with after-recording of the audio data.

Abstract: A pulse control device is maintained with a constant pulse width corresponding to a change of process or temperature. The pulse control device comprises a fuse set for selectively outputting a delay increase signal and a delay decrease signal that have a different state based on a cutting or non-cutting state of a fuse on which information on a change of process is programmed, and a pulse generator provided with a plurality of delay cells with predetermined time delay for selectively increasing or decreasing the number of the plurality of delay cells depending on the delay increase signal and the delay decrease signal to generate an internal clock with a pulse width corresponding to the number of the increased or decreased delay cells.

Abstract: Provided is a semiconductor light emitting device. The semiconductor light emitting device comprises a first conductive type semiconductor layer, an active layer, and a second conductive type semiconductor layer. The active layer comprises a first active layer, a second active layer, an electron barrier layer on the first conductive type semiconductor layer. The first active layer and the second active layer comprise a quantum well layer and a quantum barrier layer. The electron barrier layer is formed between the first active layer and the second active layer. The second conductive type semiconductor layer is formed on the active layer.

Abstract: Computer implemented method, system and computer usable program code for configuring a computing system. A determination is made whether there are any errors in the model, and responsive to determining that there is at least one error in the model, a determination is made whether there is at least one resolution for correcting the at least one error. Responsive to determining that there is at least one resolution for correcting the at least one error, at least one resolution among the at least one resolution for correcting the at least one error is selected to form at least one selected resolution to correct the at least one error. The at least one selected resolution is applied to the model to form a transformed model, and the transformed model is output to a user.

Abstract: Disclosed is a method of preparing 3-hydroxytetrahydrofuran using cyclodehydration. More particularly, this invention relates to a method of preparing 3-hydroxytetrahydrofuran, including subjecting 1,2,4-butanetriol to cyclodehydration under reaction conditions of a reaction temperature of 30˜180° C. and reaction pressure of 5000 psig or less in the presence of a strong acid cation exchange resin catalyst having a sulfonic acid group as an exchange group. According to the method of this invention, 3-hydroxytetrahydrofuran can be economically prepared at higher yield and productivity than when using conventional methods.

Abstract: The present invention relates to a novel epoxy resin having improved heat-resistance, thermal expansion properties and processability, and to a thermosetting resin composition comprising the same. To this end, the present invention provides an epoxy resin of Chemical Formula 1 as disclosed in the Description, an epoxy resin composition comprising the same, and a packaging, substrate and transistor formed thereof. When a composition that contains an epoxy resin with a specific side functional group according to the present invention and/or an epoxy resin with a specific core structure is cured, a filler forms a strong chemical bond with the epoxy resin, thereby maximizing filling effects of the filler for the epoxy resin. Moreover, with the specific core structure, heat resistance and heat expansion properties of a cured product are substantially improved (CTE is reduced), and enhanced glass transition properties, strength and processability are demonstrated.

Abstract: The UV-curable aqueous coating composition is characterized by using a UV-curable aqueous emulsion obtained by urethane reaction with a mixture including a poly-carbonate polyol or polyester polyol; an isocyanate compound; a urethane-reactive carboxylic acid; a UV-curable acrylic oligomer having 2 to 9 functional acrylate groups; a UV-curable acrylic monomer; and a urethane-reactive acrylate without an organic solvent. The aqueous composition provides good environmental acceptability and satisfactory film properties comparable to those of the prior oily UV-curable coating composition and, therefore, it is useful for coating various plastics.

Abstract: An ultrasound imaging device and method for clutter filtering is provided. The ultrasound imaging device provides logic for calculating signal characteristic values from an in-phase/quadrature-phase (I/Q) of an ultrasound signal reflected from an object and determining to remove a clutter element from the I/Q signal through comparison of the calculated signal characteristic values. Accordingly, the ultrasound imaging device provides a blood flow distribution of the object, more precisely visualized, to a user.

Abstract: The ultrasound system includes a processor that extracts plane data from volume data formed by using ultrasound signals received from a target object to form a plane image and sets a region of interest (ROI) on the plane image. The processor extracts at least a portion of the volume data to form a ROI image and a 3D image corresponding to the ROI image. A control unit controls a display unit to display the plane image together with the 3D image, and also controls the processor to set a new ROI on the displayed plane image to form a new ROI image and a 3D image corresponding to the new ROI image.

Abstract: A recording medium and a recording apparatus for storing manufacturer information for supporting specific functions for each manufacturer and a method therefor. A reproducing apparatus for reproducing manufacturer information for supporting specific functions and a method therefor is also provided. If a recording apparatus modifies the contents of the recording medium, then it should record its manufacturer's identification code. A recording apparatus/reproducing apparatus should check the identification code on the recording medium before using its own manufacture information item for some specific function. Also, it is possible to reduce the time required to determine whether the manufacturer information items are effective.

Abstract: A recordable and/or rewriteable recording medium for storing still picture data, and recording and/or reproducing method and apparatus therefor. The recording medium stores still picture group information for grouping a plurality of still pictures in order to manage the still picture at a group level, and stores audio group information for grouping additional audio data added to the still picture data after the still picture data are recorded. Therefore, large-capacity still picture data and additional audio data added thereto can be recorded using a minimum amount of management information. Further, during reproduction, data can be displayed and edited in units of the respective still pictures. Also, it is possible to cope with after-recording of the audio data.

Abstract: A recordable and/or rewriteable recording medium for storing still picture data, and recording and/or reproducing method and apparatus therefor. The recording medium stores still picture group information for grouping a plurality of still pictures in order to manage the still picture at a group level, and stores audio group information for grouping additional audio data added to the still picture data after the still picture data are recorded. Therefore, large-capacity still picture data and additional audio data added thereto can be recorded using a minimum amount of management information. Further, during reproduction, data can be displayed and edited in units of the respective still pictures. Also, it is possible to cope with after-recording of the audio data.

Abstract: A recording medium and a recording apparatus for storing manufacturer information for supporting specific functions for each manufacturer and a method therefor. A reproducing apparatus for reproducing manufacturer information for supporting specific functions and a method therefor is also provided. If a recording apparatus modifies the contents of the recording medium, then it should record its manufacturer's identification code. A recording apparatus/reproducing apparatus should check the identification code on the recording medium before using its own manufacture information item for some specific function. Also, it is possible to reduce the time required to determine whether the manufacturer information items are effective.