摘要:
The present invention relates to a digital contents providing device and method. The digital contents providing device authenticates a user according to a user terminal's access, receives a request message on first digital contents from the user terminal, searches the first digital contents corresponding to the request message from among a plurality of stored digital contents, checks period information and location information registered by the user so as to use digital contents, generates a contents message based on the searched period information, location information, and first digital contents, and provides the contents message to the user terminal. According to the present invention, the DRM contents having greater security than the DRM contents provided based on the conventional time information can be provided to the user terminal.
摘要:
A method for converting a mobile web application into a native application (the term “app” has the same meaning as the native application) and an apparatus using the method are disclosed. The method for converting a mobile web application into a native application may include: the steps of receiving at least one of a web implementation document that implements the mobile web application and a uniform resource locator (URL) for a local file; separating and analyzing a user interface element of the mobile web application based on the at least one of the web implementation document and the local file; and converting the mobile web application into the native application by mapping the analyzed user interface element to a native control that implements the native application.
摘要:
The present invention discloses an apparatus and method for protecting digital spatial information. The apparatus for protecting digital spatial information according to the present invention includes a spatial information authority database which stores access authority information on spatial information, an access authority determining unit which, when there is a request for access to the spatial information from a user, determines whether to permit the user to access the requested spatial information by referring to the spatial information authority database, a spatial information database, a spatial information providing unit which obtains the access-permitted spatial information from the spatial information database, organizes the information based on the user's request for access, and provides the information, and an access control unit.
摘要:
A system includes a server including a map data storage device storing original tile map data, grayscale image tile map data, and a plurality of multi-resolution color image tile map data having a resolution lower than that of the grayscale image tile map data, and a multi-resolution tile map data generation and transmission device generating the grayscale image tile map data and the multi-resolution color image tile map data and storing the generated data in the map data storage device, and a client including a multi-resolution tile map data reception and fusion device generating color tile map data by fusing the received grayscale image tile map data and color image tile map data and providing the color tile map data to a user, in which the resolution of the color image tile map data transmitted from the server is variably controlled according to the network environment.
摘要:
The method includes generating a 3D facility model for time-series information mapping using a 3D facility model, receiving input information on a desired time-series information type and a time-series information showing method, retrieving time-series information required to be visualized on the basis of the input information on the time-series information type and the time-series information showing method, mapping the retrieved time-series information to the generated 3D facility model according to the input time-series information showing method, and integratedly visualizing the 3D facility model and the time-series information mapped to the 3D facility model. When the apparatus and method are used, household-specific time-series information is precisely mapped and visualized to the corresponding 3D positions of a 3D spatial model, so that the time-series information in a 3D virtual city model can be integratedly visualized.
摘要:
Embodiments of a portable computer, a woofer speaker mounting structure for a portable computer and methods thereof can reduce transmission of vibrations from speaker to remaining portions of the portable computers. A woofer speaker mounting structure for a portable computer can include a case, a woofer speaker for producing bass sound positioned on the case and formed with support pieces, dampers for absorbing vibration from the woofer speaker can fit into the support pieces and can be coupled to the case. The damper can include a damper body made of an elastic material and through which a central hole is bored and shock-absorbing portions. Due to the structural and material properties of the damper, vibrations are also absorbed. Therefore, the operational characteristics of a portable computer are improved.
摘要:
The present invention relates to a method of economically preparing paraffin compounds corresponding to gasoline fuel or lubricating base oil using volatile fatty acids (VFAs) derived from biomass.
摘要:
Disclosed is a nano-sized Cu based catalyst and a method of preparing the same including dissolving, in an aqueous solution, a first component comprising a Cu precursor, a second component precursor comprising one or more selected from the group consisting of a transition metal, an alkaline earth metal and a Group IIIb metal, and a third component precursor comprising one or more selected from the group consisting of alumina, silica, silica-alumina, magnesia, titania, zirconia and carbon and then performing stirring; precipitating the stirred mixture solution using Na2CO3 and NaOH to form a catalyst precursor precipitate; and washing and filtering the formed catalyst precursor precipitate. Also a method of preparing alcohol is provided, including reacting hydrogen with carboxylic acid including a single acid or an acid mixture of two or more acids derived from a microorganism fermented solution, using the nano-sized Cu based catalyst.
摘要翻译:公开了一种纳米尺寸Cu基催化剂及其制备方法,包括在水溶液中溶解包含Cu前体的第一组分,第二组分前体,其包含一种或多种选自过渡金属, 碱土金属和IIIb族金属,第三组分前体,其包含选自氧化铝,二氧化硅,二氧化硅 - 氧化铝,氧化镁,二氧化钛,氧化锆和碳中的一种或多种,然后进行搅拌; 使用Na 2 CO 3和NaOH沉淀搅拌的混合物溶液以形成催化剂前体沉淀物; 并且洗涤和过滤形成的催化剂前体沉淀。 还提供了一种制备醇的方法,包括使用纳米尺寸的Cu基催化剂使氢气与包含单一酸或来自微生物发酵溶液的两种或更多种酸的酸混合物的羧酸反应。
摘要:
A small cylindrical reformer having at least a combustion reaction unit and a fuel-converting catalytic reaction unit wherein the combustion reaction unit and the fuel-converting catalytic reaction unit are structured as six cylindrical pipes to realize optimal heat exchange efficiently, a route supplying a water gas shift reformate to a preferential oxidation reactor and a route supplying feed and water into reforming reaction parts from the feed/water inlet overlap each other at a lower portion of the reformer so as to increase heat transfer efficiency, and a preferential oxidation reactor provided outside the fuel-converting catalytic reaction unit to decrease the concentration of carbon monoxide in the water gas shift reformate to a predetermined level or lower and increase heat transfer efficiency with an air/fuel preheating passage communicating with the air/fuel inlet.
摘要:
Disclosed herein is a small cylindrical reformer, which is suitable for use in the production of hydrogen from fossil fuels for a small fuel cell power plant. In the small cylindrical reformer according to this invention, a reforming reactor, a water gas shift reactor (high temperature or low temperature), a combustor, a heat exchanger, a steam generator, etc., may be integrated in a single container to form an optimal heat exchanging network, minimize heat loss and optimize heat exchange efficiency. Thereby, the reformer is designed to be easily processed and manufactured and to have a compact size, thus realizing high efficiency, light weight and ease of mass production.