The subfamily Acronictinae is established by Harris in 1841 based on the type species, Acronicta leporina.. In the Korean penisula, the acronictine moth Acronicta cuspis was initially reported by leech in 1889, and a total 45 species have been recorded to date. This brief overview cover adult and larval morphology, as well as ecological data, for more profound comprehension of the Acronictinae. Additionally, further research direction could involve conducting a phylogenetic analysis and clarifying the evolutionary relationships within the subfamily.

The family Erebidae is acknowledged as a highly diverse group in Lepidoptera. The genus Ischyja Hübner, 1823 has been known from India, Thailand, Laos, Vietnam, southern China, Borneo, and Sundaland, predominantly in the old world tropic region. This research presents identification of two species, which have been in Vietnam for the first time. With these new findings, the total number of Ischyja species has increased to four. We present a checklist of them, including descriptions and illustrations of the newly recorded species.

In the early 1960s, US Air Force lost missile launch bases during ICBM development by a defect in the missile design and operation plan. U.S. DoD realized the limitation of the existing accident prevention method. Therefore, the weapon development required system safety activity, and procurement projects of U.S. DoD applied MIL-STD-882(System Safety). Development projects of U.S. DoD more emphasized the importance of system safety after the space shuttle Challenger exploded in 1986. Currently, Airworthiness certification for military aircraft uses system safety to minimize accidents. The domestic defense aviation R&D projects also use the system safety for the airworthiness certification. However, non-aviation weapon R&D projects rarely applied system safety. This paper presents a system safety application method for domestic weapon R&D projects by studying the U.S. military standards/organizations and domestic defense aviation projects.

Nowadays, research on human-robot interaction has been getting increasing attention. In the research field of human-robot interaction, speech signal processing in particular is the source of much interest. In this paper, we report a speaker localization system with six microphones for a humanoid robot called MAHRU from KIST and propose a time delay of arrival (TDOA)-based feature matrix with its algorithm based on the minimum sum of absolute errors (MSAE) for sound source localization. The TDOA-based feature matrix is defined as a simple database matrix calculated from pairs of microphones installed on a humanoid robot. The proposed method, using the TDOA-based feature matrix and its algorithm based on MSAE, effortlessly localizes a sound source without any requirement for calculating approximate nonlinear equations. To verify the solid performance of our speaker localization system for a humanoid robot, we present various experimental results for the speech sources at all directions within 5 m distance and the height divided into three parts.