Sexual Dimorphism in the Compound Eye of Rhagophthalmus ohbai (Coleoptera: Rhagophthalmidae): II. Physiology and Function of the Eye of the Male

T.F.S. Lau,N. Ohba,K. Arikawa,V.B. Meyer-Rochow 한국응용곤충학회 2007 Journal of Asia-Pacific Entomology Vol.10 No.1

The eyes of male and female Rhagophthalmus ohbai are of very different sizes and possess approximately 3000 and 35 facets, respectively. In the male eye one can distinguish a smaller dorsal region with 500 facets and a larger ventral one with ca. 1800. Ultrastructural differences between them have been described earlier in this journal (Lau and Meyer- Rochow, 2006). Electrophysiological recordings from the two eye areas have now revealed that the ventral region is maximally sensitive to light of 600 nm wavelength, while the dorsal eye region responds maximally to light of 540-560 nm wavelengths. In the dorsal eye region sensitivity to UV-radiation at around 360 nm wavelength, being twice as high as that of the ventral eye region, amounted to ca. one quarter of peak wavelength sensitivity. The regional differences in spectral sensitivity seem to be a reflection of the different tasks of the two eye regions: looking downward to see the yellow light emitted by a female, sensitivity towards longer wavelengths would be advantageous, but looking upward into the twilight sky, sensitivity to shorter wavelength would be a more appropriate adaptation.

Sexual Dimorphism in the Compound Eye of Rhagophthalmus ohbai (Coleoptera: Rhagophthalmidae): II. Physiology and Function of the Eye of the Male

Lau, T.F.S.,Ohba, N.,Arikawa, K.,Meyer-Rochow, V.B. Korean Society of Applied Entomology 2007 Journal of Asia-Pacific Entomology Vol.10 No.1

The eyes of male and female Rhagophthalmus ohbai are of very different sizes and possess approximately 3000 and 35 facets, respectively. In the male eye one can distinguish a smaller dorsal region with 500 facets and a larger ventral one with ca. 1800. Ultrastructural differences between them have been described earlier in this journal (Lau and Meyer-Rochow, 2006). Electrophysiological recordings from the two eye areas have now revealed that the ventral region is maximally sensitive to light of 600 nm wavelength, while the dorsal eye region responds maximally to light of 540-560 nm wavelengths. In the dorsal eye region sensitivity to UV-radiation at around 360 nm wavelength, being twice as high as that of the ventral eye region, amounted to ca. one quarter of peak wavelength sensitivity. The regional differences in spectral sensitivity seem to be a reflection of the different tasks of the two eye regions: looking downward to see the yellow light emitted by a female, sensitivity towards longer wavelengths would be advantageous, but looking upward into the twilight sky, sensitivity to shorter wavelength would be a more appropriate adaptation.

Managing Within a Creative Environment

Sarah A. Meyer 사단법인 한국브랜드디자인학회 2007 브랜드디자인학연구 Vol.5 No.1

Managing a complex system, such as a design group, is not a matter of facilitating a sequence of discrete steps. It involves the interaction of self-management, cooperative behavior, feedback, and flexibility in processes that orchestrate these elements to the benefit of organizational strategy and the development of specific projects. Sarah Meyer defines this approach and illustrates the significance of these issues with "in-the-trenches" commentary from design managers.

A comprehensive description for damage of concrete subjected to complex loading

Meyer, Christian,Peng, Xianghe Techno-Press 1997 Structural Engineering and Mechanics, An Int'l Jou Vol.5 No.6

The damage of concrete subjected to multiaxial complex loading involves strong anisotropy due to its highly heterogeneous nature and the geometrically anisotropic characteristic of the microcracks. A comprehensive description of concrete damage is proposed by introducing a fourth-order anisotropic damage tenser. The evolution of damage is assumed to be related to the principal components of the current states of stress and damage. The unilateral effect of damage due to the closure and opening of microcracks is taken into account by introducing projection tensors that are also determined by the current state of stress. The proposed damage model considers the different kinds of damage mechanisms that result in different failure modes and different patterns of microdefects that cause different unilateral effects. This damage model is embedded in a thermomechanically consistent constitutive equation in which hardening and the triaxial compression caused shear-enhanced compaction can also be taken into account. The validity of the proposed model is verified by comparing theoretical and experimental results of plain and steel fiber reinforced concrete subjected to complex triaxial stress histories.

Toward Accounting for Sustainable Economic Develpment : Measurement Problems at Different Levels of Aggregation

Meyer, Peter B.,Yi, Yang Soo 한국국제지역사회개발학회 1999 地域社會開發學術誌 Vol.9 No.2

오늘날 "지속 가능한 개발(Sustainable Development)" 이라는 화두는 지역과 국가의 경제활동에 있어서 중요한 의제의 하나로 대두되고 있다. 그러나 "지속가능(Sustainability)"의 개념에 대한 정의와 측정에 대해서는 많은 논쟁이 오래 전부터 계속 되어왔다. 좁게는 지속가능의 범위를 경제적 활동영역에 국한 할 수도 있지만 지속 가능한 개발의 이념은 우리 인류의 경제적 활동 뿐만 아니라 자연자원을 포함한 인류전체의 복지를 포함한 모든 생태계의 조화로운 발전이 포함 되어야 한다. 본 논문은 기존의 국민총생산(GNP) 지표가 지속가능을 측정 하는 지표로 미흡하다는 점과 또 지속가능발전의 궁극적 목표인 국민복지를 제대로 반영하지 못한다는 것을 지적함과 동시에 "지속가능 (Sustainability)" 과 "국민복지 (Human-welfare)"의 측정에 있어서 4가지 중요한 구성요소로서 다양성(Diversity), 비 화폐적 경제활동(Non-monetized economic activity), 비 지속가능 활동의 수출(Export non-sustainability), 그리고 존재가치(Existence value; Non-use value,)를 제시하고자 하였다.

ILEORECTAL ANASTOMASIS: AN ANIMAL MODEL FOR STUDYING PROTEIN DIGESTION IN THE SMALL INTESTINE OF RUMINANTS

Meyer, J.H.F.,van Nickerk, A.C.M.,van der Walt, J.G. Asian Australasian Association of Animal Productio 1989 Animal Bioscience Vol.2 No.3

21 세기 대학교육의 미래

Meyer, Hans 梨花女子大學校 史學硏究所 2000 梨花史學硏究 Vol.27 No.-

Utilization of Grawfish Pigment and Other Fishery Processing By-Products

Meyers, S.P.,No, H.K. 대구효성가톨릭대학교 식품과학연구소 1995 식품과학지 Vol.7 No.-

Concepts in fishery processing increasingly involve utilization of various by-products, traditionally identified as waste with minimal economic value. Among these are fish frames, whole crustacean meals for use in crustacean aquaculture, and the biopolymers, chitin and chitosan. More recent studies have focused on a variety of value-added uses for such processing by-products. Other investigations have included recovery of protein hydrolysates, soluble proteins and amino acids, and seafood flavor compounds. Extraction of the carotenoid astaxanthin from Louisiana crawfish processing wastes, and food-grade crabmeat and flavorants from blue crab processing, are discussed as examples of integrated approaches toward total by-product recovery.

Attributes and references to honey bees (Insecta; Hymenoptera; Apidae) and their products in some Asian and Australian societies' folkloristic domains

Meyer-Rochow, V.B. The Ecological Society of Korea 2021 Journal of Ecology and Environment Vol.45 No.1

Background: References to insects in myths, stories, and idioms can be found in almost any culture, but with regard to references involving honey bee species in the Asia-Australian region, little information is available. Such references to bees can be highly informative by revealing attitudes of admiration, fear, ignorance, or even revulsion towards these insects. Results: The subject is briefly reviewed and examples of references to bees of selected cultural communities are given. Although folkloristic references to honey bees were found to be mostly positive highlighting fearlessness, cleverness, and industriousness of the bees, some also touch upon their ability to cause pain. Conclusions: Owing to the decreasing contacts and increasing alienization regarding insects generally, a plea is made to collect whatever information is still available about references to bees in songs, myths, stories, proverbs, and idioms and to compare such uses from different regions, e.g., North and South Korea. This would support other fields of research aiming to discover and to describe cultural relationships, migrations, and contacts between different peoples of the Asian/Australian region.

Attributes and references to honey bees (Insecta; Hymenoptera; Apidae) and their products in some Asian and Australian societies’ folkloristic domains

Meyer-Rochow V. B. 한국생태학회 2021 Journal of Ecology and Environment Vol.45 No.4

Background: References to insects in myths, stories, and idioms can be found in almost any culture, but with regard to references involving honey bee species in the Asia-Australian region, little information is available. Such references to bees can be highly informative by revealing attitudes of admiration, fear, ignorance, or even revulsion towards these insects. Results: The subject is briefly reviewed and examples of references to bees of selected cultural communities are given. Although folkloristic references to honey bees were found to be mostly positive highlighting fearlessness, cleverness, and industriousness of the bees, some also touch upon their ability to cause pain. Conclusions: Owing to the decreasing contacts and increasing alienization regarding insects generally, a plea is made to collect whatever information is still available about references to bees in songs, myths, stories, proverbs, and idioms and to compare such uses from different regions, e.g., North and South Korea. This would support other fields of research aiming to discover and to describe cultural relationships, migrations, and contacts between different peoples of the Asian/Australian region. Background: References to insects in myths, stories, and idioms can be found in almost any culture, but with regard to references involving honey bee species in the Asia-Australian region, little information is available. Such references to bees can be highly informative by revealing attitudes of admiration, fear, ignorance, or even revulsion towards these insects. Results: The subject is briefly reviewed and examples of references to bees of selected cultural communities are given. Although folkloristic references to honey bees were found to be mostly positive highlighting fearlessness, cleverness, and industriousness of the bees, some also touch upon their ability to cause pain. Conclusions: Owing to the decreasing contacts and increasing alienization regarding insects generally, a plea is made to collect whatever information is still available about references to bees in songs, myths, stories, proverbs, and idioms and to compare such uses from different regions, e.g., North and South Korea. This would support other fields of research aiming to discover and to describe cultural relationships, migrations, and contacts between different peoples of the Asian/Australian region.