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Two new records of the genus Nola Leach, 1815 (Lepidoptera: Nolidae, Nolinae) from Laos
Yeong–Bin Cha,Ulziijargal Bayarsaikhan,Sol–Moon Na,Dong–June Lee,Jae–Ho Ko,Tak–Gi Lee,Hyeong–Kyu Kim,Chang–Moon Jang,Han–Ul Kim,Yang–Seop Bae 한국응용곤충학회 2019 한국응용곤충학회 학술대회논문집 Vol.2019 No.04
The genus Nola (Nolidae, Nolinae) was established by Leach (1815), with the Noctua palliola Denis & Schiffermüller, 1775 (a junior subjective synonym of Phalaena cucullatella Linnaeus, 1758) from Vienna, Austria. Nola comprises over 200 species: Africa and western Palearctic approximately described 100 speices (Hacker et al., 2012); Oriental and Eastern Palearctic regions have over 100 species (László et al., 2010; Sasaki et al., 2011; Kononenko and Pinratana, 2013). Two species of the genus Nola Leach; Nola euryzonata (Hampson, 1900) and Nola lucidalis (Walker, 1865), reported for the first time in Laos. Illustrations of adults and genitalia of all the examined species are provided.
Yeong-Bin Yang,Jae-Hoon Kang 국제구조공학회 2016 Structural Engineering and Mechanics, An Int'l Jou Vol.60 No.2
Exact solutions for stresses, strains, displacements, and the stress concentration factors of a rectangular plate perforated by an arbitrarily located circular hole subjected to in-plane pure shear loading are investigated by two-dimensional theory of elasticity using the Airy stress function. The hoop stresses, strains, and displacements occurring at the edge of the circular hole are computed and plotted. Comparisons are made for the hoop stresses and the stress concentration factors from the present study and those from a rectangular plate with a circular hole under uni-axial and bi-axial uniform tensions and in-plane pure bending moments on two opposite edges.
Design of sliding-type base isolators by the concept of equivalent damping
Yang, Yeong-Bin,Chen, Yi-Chang Techno-Press 1999 Structural Engineering and Mechanics, An Int'l Jou Vol.8 No.3
One problem with base isolators of the sliding type is that their dynamic responses are nonlinear, which cannot be solved in an easy manner, as distinction must be made between the sliding and non-sliding phases. The lack of a simple method for analyzing structures installed with base isolators is one of the obstacles encountered in application of these devices. As an initial effort toward simplification of the analysis procedure for base-isolated structures, an approach will be proposed in this paper for computing the equivalent damping for the resilient-friction base isolators (R-FBI), based on the condition that the sum of the least squares of errors of the linearized response with reference to the original nonlinear one is a minimum. With the aid of equivalent damping, the original nonlinear system can be replaced by a linear one, which can then be solved by methods readily available. In this paper, equivalent damping curves are established for all ranges of the parameters that characterize the R-FBI for some design spectra.
Yeong-Bin Yang,Jae-Hoon Kang 국제구조공학회 2016 Structural Engineering and Mechanics, An Int'l Jou Vol.58 No.5
Exact solutions for stresses, strains, and displacements of a perforated rectangular plate by an arbitrarily located circular hole subjected to both linearly varying in-plane normal stresses on the two opposite edges and in-plane shear stresses are investigated using the Airy stress function. The hoop stress occurring at the edge of the non-central circular hole are computed and plotted. Stress concentration factors (the maximum non-dimensional hoop stresses) depending on the location and size of the non-central circular hole and the loading condition are tabularized.
Sliding and rocking response of rigid blocks due to horizontal excitations
Yang, Yeong-Bin,Hung, Hsiao-Hui,He, Meng-Ju Techno-Press 2000 Structural Engineering and Mechanics, An Int'l Jou Vol.9 No.1
To study the dynamic response of a rigid block standing unrestrained on a rigid foundation which shakes horizontally, four modes of motion can be identified, i.e., rest, slide, rock, and slide and rock. The occurrence of each of these four modes and the transition between any two modes depend on the parametric values specified, the initial conditions, and the magnitude of ground acceleration. In this paper, a general two-dimensional theory is presented for dealing with the various modes of a free-standing rigid block, considering in particular the impact occurring during the rocking motion. Through selection of proper values for the system parameters, the occurrence of each of the four modes and the transition between different modes are demonstrated in the numerical examples.
Yang-Seop Bae,Yeong-Bin Cha,Sung-Hwan Oh,Ulzijargal Bayarsaikhan,Sol-Moon Na,Dong-June Lee,Jae-Ho Ko,Tak-Gi Lee,Hyeong-Kyu Kim,Chang-Moon Jang 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.10
The genus Meganola (Nolidae, Nolinae) was established by Dyar (1898), with the type species Meganola conspicua Dyar, 1898, from America (Type locality: Texas, Colorado, Arizona). This genus comprises 80 species described in the Palaearctic and Oriental region. In this study, genus Meganola Dyar is reviewed from Korea, with description of a new species. We redescribed 12 species and one new species. Illustrations of adults and genitalia of all Korean species are provided, with a key to the genus of Meganola based on the male genitalia.
Review of the genus Nemapogon Schrank (Lepidoptera, Tineidae), from Korea
Yang Seop Bae,Dong June Lee,Sol Moon Na,Tak gi Lee,Yeong Bin Cha 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.10
Genus Nemapogon Schrank, 1802, of Nemapogoninae is reviewed in Korea, with four species. The genus comprises approximately 70 named speices. Some species of the genus Nemapogon Schrank, 1802 (N. granella, N. cloacella, and N. variatella) are well known as storage pests and distributed worldwide (Gaedike, 2000). The larvae of these moths feed on stored food such as cereals, flour, and dried mushrooms (Robinson and Nielsen, 1993). In Korea, the genus Nemapogon have been reported only one species up to date (Byun et al., 2009), with Nemapogon granella (Linnaeus, 1758). In this study, three additional species of the genus Nemapogon Schrank is reported for the first time in Korea. The adults are briefly described and illustrated, including adults genitalia.