Abstract: Provided is a keyword presenting system based on a sematic depth structure, including: a communication unit connected with a client via a network; an interface unit configured to receive keyword information inputted from the client and to provide a search interface presenting multiple candidate keywords; a search database configured to save multiple search results and multiple candidate keywords constituting the search interface; a semantic depth database configured to save a semantic depth structure representing a semantic distance between keywords for each candidate keyword; and a semantic depth engine configured to derive multiple associated keywords based on the search database regarding the keyword inputted from the client, and to support a function of gradationally presenting recommended keyword lists for each semantic depth level according to the selection of a user by forming recommended keyword groups for each semantic depth level based on the multiple associated keywords using the semantic depth dat

Abstract: Provided is a keyword presenting system based on a sematic depth structure, including: a communication unit connected with a client via a network; an interface unit configured to receive keyword information inputted from the client and to provide a search interface presenting multiple candidate keywords; a search database configured to save multiple search results and multiple candidate keywords constituting the search interface; a semantic depth database configured to save a semantic depth structure representing a semantic distance between keywords for each candidate keyword; and a semantic depth engine configured to derive multiple associated keywords based on the search database regarding the keyword inputted from the client, and to support a function of gradationally presenting recommended keyword lists for each semantic depth level according to the selection of a user by forming recommended keyword groups for each semantic depth level based on the multiple associated keywords using the semantic depth dat

Abstract: A hydro roll rod that includes a first liquid chamber and a second liquid chamber formed in a rear insulator and configured to provide a space in which a fluid is stored. A rod case is extended toward an outside from a portion where the first liquid chamber and the second liquid chamber are partitioned and configured to support a load. A first bridge encloses an outer circumference of the second liquid chamber and coupled to one side surface of the rod case. A second bridge encloses an outer circumference of the first liquid chamber and coupled to one side surface of the rod case. A plate is fixedly coupled to an end of the second liquid chamber. A first bracket encloses and supports outer circumferences of the first bridge and the plate, and a second bracket encloses and supports an outer circumference of the second bridge.

Abstract: The present invention relates to a pellet-type non-crosslinked polypropylene foam having a melting point of 125 to 140° C., and a process and device for producing said foam. Since the pellet-type foams of non-crosslinked polypropylene of the present invention has a lower melting point and a closed cell content of 80% or more, it is advantageous to mold such foams. The present invention also relates to an article molded from the above pellet-type non-crosslinked polypropylene foams.

Abstract: The present invention relates to a pellet-type non-crosslinked polypropylene foam having a melting point of 125 to 140□, and a process and device for producing said foam. Since the pellet-type foams of non-crosslinked polypropylene of the present invention has a lower melting point and a closed cell content of 80% or more, it is advantageous to mold such foams. The present invention also relates to an article molded from the above pellet-type non-crosslinked polypropylene foams.