• International Journal of Industrial Entomology and Biomaterials
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• 제15권2호
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• pp.157-160
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• 2007

Nymph of the emma field cricket, Teleogryllus emma, were reared on several types of artificial diets. The development period of nymphs were 55.4 days when only a single food, wheat bran, was provided, and it did not show a significant difference compared to the rearing results of the Danong diet and mixed diet. The supplying period of fish meal as the animal feed, the high emergence rates were obtained at 3rd instar with 90% and 4th instar with 100%. For the added amount test, when more than 40% of the diet was added, it confirmed that the insect weight increased. The characteristics of development according to each added amount of the vegetable food (dry bean-curd residue and corn powder) were investigated to minimize the dangers of the degeneration of diet when rearing with a single feed during the $1st{\sim}3rd$ instar period. First, as the added amount of bean-curd residue increased, nymphal development period became longer and the emergence rate became low. With corn powder as the single diet, all died before becoming adult. However, when corn powder was added up to 30%, no difference existed in the breeding results.

• 한국컴퓨터정보학회논문지
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• 제20권8호
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• pp.121-128
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• 2015

This study aimed to investigate the effects of an unplugged robot education system capable of computerless coding education. Specifically, this study compared this education system with PicoCricket, an educational robot that can also be used with elementary students in lower grades, using assessment tools on perceived usefulness and ease. Using random sampling and randomized assignment for more objective validation, 30 participants were assigned to the unplugged robot education system group (experimental group) and 30 participants were assigned to the PicoCricket group (control group), for a total of 60 study participants. The research procedure included verification of the equivalence of the two groups by conducting a pretest after a 2-hour basic training session on algorithms and programming. The experimental and control groups learned the same content using different educational tools in accordance with software training guidelines for a total of 12 hours. Then, the difference in perceived usefulness and ease between the two groups was examined using a post-treatment test. The study results showed that scores on both dependent variables, perceived usefulness and perceived ease, were significantly higher in the experimental group than the control group. Moreover, scores on all sub-variables of the dependent variables were significantly higher in the experimental group than the control group. These results suggest that learners using the unplugged robot education system found it more useful and easier to use than learners using the existing educational robot, PicoCricket. This study's findings are significant, as according to the technology acceptance model, the perceived usefulness and ease of an educational tool are important variables that determine the acceptance of the tool (i.e., persistence of learning).

• International Journal of Industrial Entomology and Biomaterials
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• 제45권2호
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• pp.115-125
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• 2022

In this study, we investigated the developmental characteristics and genetic diversity of seven populations of two-spotted crickets (Gryllus bimaculatus De Geer, 1773 (Orthoptera: Gryllidae)) raised in South Korea. Regarding the developmental characteristics of the species, we observed no statistically significant difference in the weight of the nymphs in the six populations we tested. After molting, although weight differences were observed between the populations in each stage of the developmental period, the average weight for each developmental stage was constant. We also analyzed mitochondrial COI gene sequences (DNA barcoding region) of the reared crickets collected from five insect farms and two national insect rearing facilities and the resultant sequences were analyzed together with the 12 sequences from foreign countries specimens obtained from public data. We detected six haplotypes from 111 specimens, indicating a low intraspecific genetic distance (~1.8%). The most dominant haplotype was overwhelmingly haplotype 1, which was found in all South Korean specimens and four specimens from China, Indonesia, and Germany. These findings indicate that the low genetic diversity of South Korean specimens can be explained by the fact that the G. bimaculatus population imported for feed from Japan in the early 2000s became a maternal group that spread throughout cricket farms in South Korea. In order to breed healthy cricket strains, it is necessary to increase genetic diversity by importing them from other countries through appropriate quarantine procedures.

• 한국응용곤충학회지
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• 제59권2호
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• pp.133-138
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• 2020

2016년에 쌍별귀뚜라미는 식품의약품안전처 식품공전에 등록된 식품원료로 가장 큰 장점은 월동 없이 연중 대량 사육이 가능하다는 것과 60% 이상의 단백질 함량이다. 본 연구에서는 사육공간, 인건비 등의 문제로 인하여 귀뚜라미 사육이 불가능할 때를 대비하여 저장조건을 설정하였으며, 산란율이 높은 산란처 선발과 알의 동종포식률을 조사하였다. 산란은 상토 산란처에서 가장 선호도가 높았으며(p < 0.05), 알의 동종포식률을 보았을 때 10 L 당 종령 약충 62마리 이하, 1일 동안 산란을 받는 것이 가장 적합한 것으로 판단되었다(p < 0.05). 알의 저온 저장을 하였을 때는 28℃에서 10일간 보관 후 16℃에서 10일간 저온 저장했을 때 부화율이 가장 높았고, 저장을 하지 않았을 때와 비교하였을 때 12~14일 부화를 연장할 수 있었다(p < 0.05). 쌍별귀뚜라미의 산란처, 산란 방법 및 알 저장조건을 설정함으로써 효율적인 생산방법을 제시하였다.

• 한국응용곤충학회:학술대회논문집
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• 한국응용곤충학회 2004년도 춘계 학술발표회
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• pp.84-84
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• 2004

• 한국잠사학회:학술대회논문집
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• 한국잠사학회 2005년도 제48회 춘계 학술연구 발표회
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• pp.69-69
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• 2005

• 한국잠사학회:학술대회논문집
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• 한국잠사학회 2004년도 International Conference of Sericultural and Entomological Sciences
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• pp.48-48
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• 2004

• 농촌지도와개발
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• 제25권2호
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• pp.99-110
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• 2018

Research confirms that healthful benefits accrued when people connect with nature and insect by viewing and interacting with them. Insect rearing is easy, relatively inexpensive, and can breed small space. This study aimed to investigate the physiological effects of animal assisted activity using insect(Oriental garden cricket) with diets and a rearing manual. The group of insect activity whose ages ranged from 65 to 82 years old that attending a community center in Daegu, Korea, were enrolled in the study between April and May 2014. The collected data was analyzed using qualitative analysis. Qualitative study is utilized to explore mental models, and their linguistic, affective, cognitive, social and cultural significance. The result showed that people-insect interactions promote well being of the elders, and the important aspect of insect activity aids in improvements in their social, emotional and cognitive functioning which were enhancing life satisfaction, reducing loneliness and increasing activities of daily life.

• 한국통신학회논문지
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• 제34권6C호
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• pp.611-618
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• 2009

최근 유비쿼터스 컴퓨팅 환경에서 상황인식 서비스를 위한 핵심 기술로 실내 위치인식 기술이 주목받고 있다. 기존에 연구된 크리켓은 비중앙집중형 구조로 설계되어 사용자의 프라이버시를 보호하고, 확장, 유지관리가 용이하며, 하드웨어 비용이 저렴한 잇점이 있다. 이 논문에서는 RF와 초음파신호 사이의 TDOA에 기반한 크리켓 시스템보다 개선된 실내 측위시스템을 설계하였다. RF 메시지를 전송하기 위하여 ISM 대역인 2.4GHz 주파수를 사용하였다. 비콘에서 RF와 초음파를 전송하는 빈도(Beaconing frequency)는 채널 이용률을 높이기 위해 2배 높였다. 초음파 펄스 지속시간은 초음파 신호의 거리를 증가시키면서 최적화 시켰다. 또한 위치좌표를 계산하는 기능을 리스너에 내장시켰다. 실험결과 위치 업데이트율과 위치 정확도는 향상되었다.

• 공학교육연구
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• 제15권5호
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• pp.93-97
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• 2012

Most of ubiquitous computing devices such as stereo camera, ultrasonic sensor based MIT cricket system and other wireless sensor network devices are widely applied to the 2 Dimensional(2D) localization system in today. Because stereo camera cannot estimate the optimal location between moving node and beacon node in Wireless Personal Area Network(WPAN) under Non Line Of Sight(NLOS) environment, it is a great weakness point to the design of the 2D localization system in indoor environment. But the conventional 2D triangulation scheme that is adapted to the MIT cricket system cannot estimate the 3 Dimensional(3D) coordinate values for estimation of the optimal location of the moving node generally. Therefore, the 3D triangulation scheme based on the space segmentation in WPAN is suggested in this paper. The measuring data in the suggested scheme by computer simulation is compared with that of the geographic measuring data in the AutoCAD software system. The average error of coordinates values(x,y,z) of the moving node is calculated to 0.008m by the suggested scheme. From the results, it can be seen that the location correctness of the suggested scheme is very excellent for using the localization system in WPAN.