• Title/Summary/Keyword: science running

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Artificial Habitat Creation of Luciola lateralis (Coleoptera: Lamphyridae) and Research of Breeding Technique for Festival at Hwadamsup, Korea

  • Kang, Seung-Ho;Jeon, Mi-Kyung;Kwon, Soon-Jik;Na, Seok-Jong;Kim, Kyung-Ho;Jeong, Jong-Chul
    • Journal of Forest and Environmental Science
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    • v.34 no.4
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    • pp.275-283
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    • 2018
  • This study created the running water (Bandibooliwon) and lentic water (Sooryunwon) artificial habitats of Luciola lateralis in Hwadamsup, Gwangju-si, Gyunggi-do from April 2014 to February 2016. Through various habitat types, metapopulation was formed, and more sound population was induced to be maintained via interactions between habitats. We investigated coenosite at the habitat creation-target site, and 20 species in the lentic water site and 38 species in running water site were found. After releasing L. lateralis, we checked the status of settlement of L. lateralis larvae through traps and macroscopy, controlled the flow velocity of the habitats in line with the life cycle of L. lateralis (hatching, larva period, landing, pupation, copulation, and oviposition), and shaped gentle slope at water side, and planted moss. We artificially supplied melanian snails (Semisulcospira sp.), the food source, in the running water site and induced stable feeding. Also, We created artificial insectary, bred larvae stably in winter, and secured firefly population for a festival. Through night time observation, the time most suitable for a festival was confirmed to be from 20:30 to 22:00.

Intraoperative Neurophysiological Monitoring in Cerebello Pontine Angle Tumor

  • Park, Sang-Ku
    • Korean Journal of Clinical Laboratory Science
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    • v.46 no.1
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    • pp.38-45
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    • 2014
  • Intraoperative Neurophysiological Monitoring (INM) inspection has a very important role. While preserving the patient's neurological function be sure to safe surgery, neurological examination should thank. Cerebello pontine angle tumor surgery, especially in the nervous system is more important to the meaning of INM. In cochlear nerve, facial nerve, trigeminal nerve, which are intricate brain surgery, doctors are only human eye and brain to the brain that it is virtually impossible to distinguish the nervous system. They receives a lot of help from INM. In this paper, we examined six kinds broadly. First, the methods of spontaneous EMG and Free-running EMG, which can instantly detect a damage inflicted on a nerve during surgery. Second, methods of triggered EMG and direct nerve electrical stimulation, which directly stimulate a nerve using electricity to distinguish between nerves and brain tumors. Third, the method of knowing a more accurate neurologic status by informing neurological surgeons about Free-running EMG wave forms that are segmetalized into four. Fourth, three ways of knowing when a patient will be awaken from intraoperative anesthesia, which happens due to a weak anesthetic. Fifth, a method of understanding the structures of a brain tumor and a facial nerve as five dividend segments. Sixth, comparisons between cases normal facial nerve recovery and occurrence of a facial nerve paralysis during the postoperative course.

Public Library Multicultural Programs and Improvement Methods Analyzed from Case Studies (공공도서관 다문화프로그램 사례 분석과 개선방안 연구)

  • Ahn, In-Ja;Park, Mi-Young
    • Journal of the Korean Society for Library and Information Science
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    • v.45 no.3
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    • pp.279-301
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    • 2011
  • This study analyzed 138 multicultural programs from 40 libraries during the last two years. The study compares multicultural programs running in Korean libraries with those from American and Canadian libraries which have a long history of multicultural societies. The results are listed below. There is a need for long-running multicultural programs that address the needs of its users even from the planning stages. Programs should include out-reach based running methods, daily life based subjects and contents, and differentiated approaches for different levels and ages of users.

Design of Subharmonic Injection Locked Oscillator (부고조파를 이용한 X-band 주입 동기 발진기 설계 및 제작)

  • 전영상;이문규;남상욱
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.10 no.5
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    • pp.653-662
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    • 1999
  • In this paper, subharmonically injection locked oscillator(SILO) was designed and measured. SILO with series feedback was designed using Two Signal Method(TSM). The free-running oscillator frequency was 9.4 GHz with 6 dBm output power. In case of injection, the multiplied injected signal locked the free-running frequency. The locked signal output power was higher than any other spurious response at least 40 dB. The locking range was 220MHz (second subharmonic locking), 100 MHz(4th subharmonic locking), and phase noise was -111 dBc/Hz, -104 dBc/Hz at 100kHz offset, respectively.

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In-situ test and dynamic response of a double-deck tied-arch bridge

  • Gou, Hongye;Zhou, Wen;Chen, Genda;Bao, Yi;Pu, Qianhui
    • Steel and Composite Structures
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    • v.27 no.2
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    • pp.161-175
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    • 2018
  • In this study, in-situ dynamic tests of the world's longest steel box tied-arch bridge over the Yangtze River, China, are reported. The double deck bridge supports highway and monorail systems at upper and lower levels, respectively. Strain, displacement, and acceleration responses were measured and used to investigate the vibration characteristics of the bridge when excited by running trains and/or trucks at a speed of 5-60 km/h, train braking, and truck bouncing. Impact factors were correlated with the running speed of trains and trucks. A three-dimensional finite element model of the coupled monorail-train-bridge vibration system accounting for track irregularities was established to understand the system behavior and validated by the experimental results. Truck bouncing was the dominant impact factor on bridge responses. The running speed of vehicles determined the riding comfort of traveling trains.

A Study on Suspension Optimization of the Korean Personal Rapid Transit Vehicle (한국형 PRT차량의 현가장치 최적화 연구)

  • Kim, Hyun Tae;Kim, Jun Woo;Cho, Jeong Gil;Koo, Jeong Seo;Kang, Seokwon;Jeong, Raggyo
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.40 no.3
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    • pp.317-326
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    • 2016
  • In this study, running stability and ride quality analyses, applying the 'ISO 3888 (double lane change)' and 'ISO 2631-1' (mechanical vibration and shock) tests, were performed for the suspension optimization of the Korean personal rapid transit (PRT) vehicle. The suspension optimization results for running stability and ride quality were derived by applying the multiresponse surface method. From the comparisons of the optimization results for different ratios of the objective functions of running stability and ride quality, we derived the best objective function ratio of 3.9-to-6.1 to improve both the running stability and the ride quality. With the optimized results, the suspension stiffness became 30.68 N/mm, between the value of the $S_2$ and $S_3$ models, and the damping coefficient equaled that of the $D_1$ model. When compared with the suspension of the current PRT vehicle, the roll angle, yaw rate, sideslip angle, and ride comfort were improved by 0.37, 0.37, 2.8, and 5, respectively.

Drosophila CrebB is a Substrate of the Nonsense-Mediated mRNA Decay Pathway that Sustains Circadian Behaviors

  • Ri, Hwajung;Lee, Jongbin;Sonn, Jun Young;Yoo, Eunseok;Lim, Chunghun;Choe, Joonho
    • Molecules and Cells
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    • v.42 no.4
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    • pp.301-312
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    • 2019
  • Post-transcriptional regulation underlies the circadian control of gene expression and animal behaviors. However, the role of mRNA surveillance via the nonsense-mediated mRNA decay (NMD) pathway in circadian rhythms remains elusive. Here, we report that Drosophila NMD pathway acts in a subset of circadian pacemaker neurons to maintain robust 24 h rhythms of free-running locomotor activity. RNA interference-mediated depletion of key NMD factors in timeless-expressing clock cells decreased the amplitude of circadian locomotor behaviors. Transgenic manipulation of the NMD pathway in clock neurons expressing a neuropeptide PIGMENT-DISPERSING FACTOR (PDF) was sufficient to dampen or lengthen free-running locomotor rhythms. Confocal imaging of a transgenic NMD reporter revealed that arrhythmic Clock mutants exhibited stronger NMD activity in PDF-expressing neurons than wild-type. We further found that hypomorphic mutations in Suppressor with morphogenetic effect on genitalia 5 (Smg5) or Smg6 impaired circadian behaviors. These NMD mutants normally developed PDF-expressing clock neurons and displayed daily oscillations in the transcript levels of core clock genes. By contrast, the loss of Smg5 or Smg6 function affected the relative transcript levels of cAMP response element-binding protein B (CrebB) in an isoform-specific manner. Moreover, the overexpression of a transcriptional repressor form of CrebB rescued free-running locomotor rhythms in Smg5-depleted flies. These data demonstrate that CrebB is a rate-limiting substrate of the genetic NMD pathway important for the behavioral output of circadian clocks in Drosophila.

Analysis and Comparison of Sorting Algorithms (Insertion, Merge, and Heap) Using Java

  • Khaznah, Alhajri;Wala, Alsinan;Sahar, Almuhaishi;Fatimah, Alhmood;Narjis, AlJumaia;Azza., A.A
    • International Journal of Computer Science & Network Security
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    • v.22 no.12
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    • pp.197-204
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    • 2022
  • Sorting is an important data structure in many applications in the real world. Several sorting algorithms are currently in use for searching and other operations. Sorting algorithms rearrange the elements of an array or list based on the elements' comparison operators. The comparison operator is used in the accurate data structure to establish the new order of elements. This report analyzes and compares the time complexity and running time theoretically and experimentally of insertion, merge, and heap sort algorithms. Java language is used by the NetBeans tool to implement the code of the algorithms. The results show that when dealing with sorted elements, insertion sort has a faster running time than merge and heap algorithms. When it comes to dealing with a large number of elements, it is better to use the merge sort. For the number of comparisons for each algorithm, the insertion sort has the highest number of comparisons.

An HTML5-based Web Application Running Platform of a Digital Broadcasting Receiver (디지털방송 단말의 HTML5 기반 웹 애플리케이션 실행 플랫폼)

  • You, Dae-Sang;Maeng, Seung-Ryol
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.17 no.9
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    • pp.2048-2054
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    • 2013
  • Due to the development of the digital technology, the territories of broadcasting and telecommunications are being converged and there have been the efforts to eliminate the spatial and/or temporal restrictions in utilizing the services (usually implemented as applications) via various devices (e.g. smart-phone, smart TV, pad-computer, etc). In the circumstances, Web is coming to the fore as a common running platform of the services and the digital broadcasting receivers are pressed to run Web applications as well as Java applications, which are the standard of data service of the digital broadcasting. The paper introduces a platform for running HTML5-based Web applications, which is equipped with a Web kernel (an engine for running HTML5 Web applications), a Web desktop (the facilities (with an UI similar to Window OS) for managing Web applications), and SDK (a set of API's for Web application developers).

The Effect of Number of Running Screens and Viewers in the Theaters, Genres, Holdback Period on the Number of Purchases of Movie VOD in the Digital Cable TV Subscribers (디지털케이블TV에서 영화의 선행창구 성과, 장르, 홀드백 기간이 영화 VOD 구매에 미치는 영향)

  • Park, Sun-Kyoo;Choi, Seong-Jhin
    • Journal of Broadcast Engineering
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    • v.20 no.6
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    • pp.950-962
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    • 2015
  • This paper analyzes the effect of the number of viewers and the number of running screens in the theater, genres of the movies and holdback period on the number of purchases movie VOD contents. In this paper, we deals with the 169 movies VOD consumption data which the digital cable TV subscribers purchased during the third quarter of 2013. As a result of the research, the average number of VOD purchases per each movie is 2,540. Regression analysis proves that the number of running screens and the holdback period are statistically playing a role of significance in movie VOD purchases. But the number of viewers in the theaters is not of significance. By genres, the result is shown as in this order: SF/fantasy 8,401 > dramas 4,011 > comedies 2,011 > action 1,789 > animation 1,138 > love story/melo 1,119 > horror/thriller 770 > erotic movies 636.