Generation methods of the optical zero-correlation zone (ZCZ) sequence set with ZCZ 1, 4z − 2 and 2 z have been proposed, where z is a natural number. However, the code generator for the sequence with ZCZ 2 z has not been considered. In this paper, we propose a new construction of a code generator without ROM. The proposed code generator can suppress the circuit size and operate faster than the conventional code generator with ROM. In addition, the conventional and proposed code generators for the sequences with the ZCZ sizes of 2, 4, and 8 are implemented on a field-programmable gate array (FPGA) and compared. As a result, the proposed code generator can reduce the circuit size and operate faster than the conventional code generator.
This paper reports a web-based survey system developed to enhance institutional research. The system has basic functions implemented in the open-source web questionnaire system. In addition, this system has functions that enhance institutional research, such as (1) the display of the response rates of each university department, (2) collation of all results obtained (including paper-based surveys), and (3) an analysis of survey results using visual tools. The design considered the importance of a link-up with the authentication server belonging to Yamaguchi University. Thus, graphs may be compiled automatically and in real time to assist a comparison between departments within the university by respective stakeholders. This work provides an overview and a case study of the usage of this system.
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