• 한국CDE학회논문집
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• 제21권4호
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• pp.453-461
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• 2016

The trend of using Grasshopper with Rhino3D actively in architectural design process is recently spreading around the world. Well-known architects and designers such as Zaha Hadid, Patrik Schmacher is famous for using Grasshopper as their main design tool. As a tool for so-called 'Parametric Design', Grasshopper is receiving much attention all over the world. Grasshopper as a visual programming language has an advantage that designers and non-professionals of computer can easily learn it and use it to their works. However, those designers tend to make inefficient approaches with Grasshopper compared to computer programming professionals. Meanwhile, the difference between other programming languages and Grasshopper leads to the need of different approaches from other programming languages. This study aims to propose desired approaches of Grasshopper programming or scripting to be able to break through the inefficient approaches that designer is likely to make, by examining the characteristics of Grasshopper and exploring the appropriate programming approaches for Grasshopper.

• 한국공간구조학회논문집
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• 제16권2호
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• pp.31-38
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• 2016

The objective of this study is to propose methods to design and analyze a catenary shell using a computer program without experiments and measurements. The intial idea stems from Pendergrast's study, but his method should be improved. In this study, the process of making catenary shell using computer was reproduced by Grasshopper script. In order to enhance credibility, two models from Grasshopper script were analyzed by SAP2000; one was just a square-based catenary shell, while the other was the re-created shell originated from the Naturtheater $Gr{\ddot{o}}tzingen$. The outcome of analysis was reasonable.

• International Journal of Industrial Entomology and Biomaterials
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• 제5권1호
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• pp.127-129
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• 2002

Lepidoscelio viatrix is a potential biocontrol agent of the eggs of wingless grasshopper, Neorthacris acuticeps nilgerensis, in mulberry plantation in natural conditions. The present investigation was undertaken to understand the attachment of the parasite to the hopper under scanning electron microscope and the oviposition behavior of the parasite. The results reveal that the parasite grips firmly to the lateral and dorsal surfaces of the female grasshopper with its mandibles implanted in the intersegmental membranes of the abdominal segments. During oviposition, L. viatrix initially turn around the egg pod and protrude its ovipositor and insert into the eggs. It lays eggs inside the eggs of grasshopper by an up and down movement of the ovipositor, Further, field observations indicated a drastic fall in the incidence of the grasshopper population on mulberry, with the increased parasitization of L. viatrix.

• 한국균학회지
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• 제48권3호
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• pp.197-207
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• 2020

In the screening of fungal diversity, two strains were collected from the soil of Yeongcheon and dissected guts from the bodies of Chinese rice grasshopper (Oxya chinensis), Chinese grasshopper (Acrida cinerea), and Far eastern devil grasshopper (Oedaleus infernalis) from Daejeon in Korea. They were identified as Umbelopsis vinacea (KNU-YC-1801B) and Mucor hiemalis f. corticola (KNU-20F7, KNU-20F8, KNU-20F9). Multigene phylogenetic analyses of the internal transcribed spacer (ITS) regions, and large subunit (LSU) sequence data confirmed two unreported taxa along with their morphology. The results of molecular phylogeny firmly supported the detailed description and illustration for each taxon. As far as we know, both Umbelopsis vinacea and Mucor hiemalis f. corticola are the first reported taxa in Korea.

• 한국BIM학회 논문집
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• 제10권3호
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• pp.22-32
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• 2020

Apartment building site planning is one of time consuming and labor-intensive tasks in architectural design field, due to its complexity in zoning regulations, building codes, local restrictions, and site-specific conditions. In other words, the process can be seen as a very complicated mathematical function with layers of variables and parameters, which ironically can be automated using computational methods on parametric tools. In this paper, a practical method of automating site planning of an apartment complex has been proposed by utilizing parametric approaches in Rhino 3D and Grasshopper. Two primary parameters, building heights and positions, determine the efficacy of building layouts under all regulatory standards, thus testing out numerous combinations of the two will produce some successful layout alternatives. For this, equation solver has been used for iterating the parametric model to sort out meaningful results among others. It also has been proven that the proposed process significantly reduced the time in site planning down to less than an hour on most cases, and many successful alternatives could be obtained by using multiple computers. Post evaluation processes such as day light and view shed analysis helped sort out the best performing ones out of functioning alternatives.

• 한국의류학회지
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• 제47권1호
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• pp.171-190
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• 2023

This study aims to develop algorithms for automatic extraction landmarks from the lower body of women aged 20-54 using the Grasshopper programming language, based on 3D scan data in the 8th SizeKorea dataset. First, 11 landmarks were defined using the morphological features of 3D body surfaces and clothing applications, from which automatic landmark extraction algorithms were developed. To verify the accuracy of the algorithm, this study developed an additional algorithm that could automatically measure 16 items, and algorithm-derived measurements and SizeKorea measurements were compared using paired t-test analysis. The statistical differences between the scan-derived measurements and the SizeKorea measurements were compared, with an allowable tolerance of ISO 20685-1:2018. This study found that the algorithm successfully identified most items except for the crotch point and gluteal fold point. In the case of landmarks with significant differences, the algorithms were modified. This study was significant because scan editing, landmark search, and measurement extraction were successfully performed in one interface, and the developed algorithm has a high efficiency and strong adaptability.

• 한국초등과학교육학회지:초등과학교육
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• 제22권1호
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• pp.121-129
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• 2003

The enhancement of inquiry skills has been emphasized as a important objective of science education for a long time. Of these, the observation is not only a simple and basic skill, but also a very important skill, in aspect of gathering informations about the nature of all things around us, through interaction between the sense organs of body and objectives. The purpose of this study is to investigate the results of observations about the grasshopper(Oxya chinesis), made by the elementary student from the 3rd to the 6th grade, and to make use of them as the basic materials for the observative teaming and the evaluation of the observation ability. Through this study, the collected items of observation are as follows For grasshopper, a total of observation items is 95, 70 using the sight sense, 13 using the tactile sense,7 using the olfactory sense. 3 using the palate sense and 2 using the auditory sense. In this study, the findings of elementary student's observation are as follows. 1. On the whole, most of students have observed mainly by the sight and the tactile sense, when observing the grasshopper. 2. It is showed a tendency that the observation ability of student is increased with the higher grade in elementary school. 3. As the grade ascends. the observations with operating are increased, also the quantitative expression and interpretation about them are increased. 4. In the case of same grade, there is no significant difference between students' gender, though girls' ability of the observation showed somewhat higher than boys' 5. Occasionally, the interpretations on the observative facts made by student, are inaccurate. Basis on the above results, we suggested some directions for the improvement of the observative learning program in science classroom of elementary school. First, the teacher have to serve as a guide and encouragement in the observative learning class, to be accomplished the various observation, which all the sensory organ can be used by student than the sight sense. Second, to get elevated the ability of observation, it is necessary that some experimental tools(magnifying lens, stereoscope, auxiliary implements etc.) are utilized. Third, the teacher have to make often endeavors showing an example of operation, to be activated the atmosphere of operative observation.

• 한국잠사곤충학회지
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• 제53권2호
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• pp.130-134
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• 2015

본 연구에서는 벼메뚜기의 생리활성을 확인하기 위하여 벼메뚜기의 성충을 실험재료로 하여 항산화 활성, 항균활성, 항균 물질의 열 안정성, pH 안정성, total polyphenol 함량 등을 측정하였다. 추출용매에 따른 항균력은 E. coli 균주의 경우 ethanol 혼합용매에서 가장 높은 항균력을 보였다. 항균 활성은 열풍건조 $40^{\circ}C$와 동결건조 조건에서 가장 높았으며 암수에 따른 차이는 없었고 항균 물질은 열과 pH에 안정하였다. 벼메뚜기의 항산화 활성은 50% ethanol 추출물과 70% ethanol 추출물에서 가장 높은 활성이 나타났고 total polyphenol은 12 ~ 17 mg/100 g으로 건조조건이나 성별에 따른 차이는 크지 않음을 확인하였다.

• 한국균학회지
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• 제44권4호
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• pp.355-359
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• 2016

During a survey of fungal diversity in insect guts in Korea, two fungal strains, EML-PGH2 and EML-PUKI88, were isolated from the gut of grasshopper and soldier fly larvae inhabiting the bulrush plants at a pond located in the Chonnam National University Arboretum, Gwangju, Korea. Based on their morphological characteristics and a phylogenetic analysis of the internal transcribed spacer (ITS1 and ITS2) and 5.8S rDNA sequences, the strains were identified as Blakeslea trispora. To our knowledge, the zygomycete species B. trispora has not been previously described in Korea.

• 약학회지
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• 제58권3호
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• pp.151-157
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• 2014

Water extracts of rice grasshopper (Oxya japonica japonica Thurnberg) were prepared and their antitumor and immunostimulatory activities were investigated using a flow cytometer. When LCT-CT was ip injected into ICR mice at the dose of 33.3 mg/kg before and after the implantation of $4{\times}10^5$ cells/mouse of sarcoma 180 tumor cells, it inhibited the growth of the tumor cells by 96.6%, showed lymphoblstogenic activities on the splenic lymphocytes and increased the expression of CD25 molecules on the splenic T lymphocytes. When co-cultured with the splenic lymphocytes of a BALB/c mouse, LCT-CT showed strong immunostimulatory activities at the concentration of $25{\sim}100{\mu}g/ml$ by significantly increasing lymphoblasts ratio and CD25 expression.