Abstract: The present invention relates to a dark-field inspection device, and more particularly, to a dark-field inspection device capable of varying a wavelength of illumination light, selectively receiving a wavelength of scattered light, and adjusting an irradiation area of the illumination light.

Abstract: Disclosed are a system and method for automatically evaluating an essay. The system includes a structure analysis module configured to divide learning data and learner essay text in a predetermined structure analysis unit, generate structure tagging information for each structure analysis unit, and structure the learning data and the learner essay text by attaching the structure tagging information to the learning data and the learner essay text, a learning module configured to generate an essay evaluation model through learning by using essay text that is included in the structured learning data and the structure tagging information as an input value and using an evaluation score that is included in the structured learning data as a label, and an evaluation module configured to generate essay evaluation results using the essay evaluation model.

Abstract: Disclosed is an MCIA (message communication interface assembly) battery, easily installable in the MCIA, for realizing lightness, slimness, and overall compactness of the PDA. The MCIA battery comprises a battery body (13) for supplying power; a combiner (9) attachably and removably combined with the slot-type MCIA (3) attachable to/removable from the PDA 1; and hinges (19 and 21) and a link (17) for connecting the battery body (13) with the combiner (9). The hinges and the link rotate the battery body and the combiner to closely attach the battery body to the PDA, and accordingly, the present invention provides an easy installation of the battery in the slot-type MCIA and fully realizes lightness, slimness, and overall compactness that the PDA pursues.