• Title/Summary/Keyword: 수행성 검증

Search Result 6,654, Processing Time 0.036 seconds

The Growth Characteristics of Angelica gigas Nakai according to Cultivation Regions (재배지별 참당귀의 생육특성)

  • Hong Woo Park;Hyun-Jun Kim;Ki Yoon Kim;Dae Hui Jeong;Chung Ryul Jung;Yurry Um;Kwon Seok Jeon
    • Proceedings of the Plant Resources Society of Korea Conference
    • /
    • 2020.08a
    • /
    • pp.99-99
    • /
    • 2020
  • 참당귀(Angelica gigas Nakai)는 중국의 동북부지역, 일본 및 한반도 전역에 자생하고 있으며, 예로부터 보혈, 활혈지통, 윤장등의 효능으로 심신혈허, 월경불순, 통경경폐 등의 병증에 주로 사용되었고, 8월부터 뿌리가 급격히 비대하여 10월 말에서 11월 초에 수확을 한다. 본 연구는 참당귀의 주산지인 봉화, 평창을 비롯한 영양, 인제 등 4지역을 선정하여 미세기상장비를 설치 및 토양의 이화학성 분석을 통해 지역별 생육환경을 측정하였고, 또한 참당귀의 생육특성을 조사하였다. 그 결과 5월에서 10월까지 평균 대기온도와 일사량은 인제지역에서 다른지역에 비해 비교적 높은 경향을 나타냈다. 또한 토양온도는 5월에서 8월까지는 영양지역이, 9월과 10월은 봉화지역이 다른지역에 비해 비교적 높은 것으로 조사되었다. 지역별 토양 성분의 이화학적 특성은 봉화지역이 유기물(5.17%), 전질소(0.19%), 유효인산(2187.76mg/kg), 칼륨(1.53cmol+/kg)의 함량이 다른 지역에 비해 높은 경향으로 확인되었고, 인제지역이 칼슘(12.63 cmol+/kg), 마그네슘(3.7cmol+/kg)등 미량원소의 함량이 높은 것으로 분석되었다. pH는 지역별 차이가 확인되지 않았으며, 영양지역의 토성이 사질식양토로 배수성의 차이는 확인되었다. 이에 따른 참당귀의 생육특성은 초장과 줄기직경은 영양지역에서 각각 70.95cm와 35.72mm로 가장 높게 측정되었으며, 잎 길이및 너비는 평창지역에서 각각 42.84cm, 52.39cm로 가장 높게 측정되었다. 뿌리직경은 영양에서 50.49mm, 뿌리길이는 봉화에서 38.05cm, 생중량은 평창에서 328.23g으로 다른지역에 비해 높은 경향을 나타냈다. 상기 결과를 바탕 재배환경과 생장량간의 상관관계를 분석하였다. 재배환경 중 대기 및 토양온도, 대기 습도는 실험이 수행되어진 전 지역에서 이상고온이나 저온과 같은 특이점 없이 비슷한 양상으로 측정되었고, 이에 따라 참당귀생장에 대해 유의한 상관관계가 분석되지 않았다. 토양습도는 지상부(초장, 줄기직경, 잎길이, 잎너비)의 생육과 음의 상관관계에 있다고 사료되나 유의성이 검증되지 않았다.

  • PDF

A Study of the Effectiveness of Habitat for Humanity Korea's Disaster Risk Reduction Interventions: Focusing on the Mental Health of Residents of a Perennially Flooded Area in Southern Bangladesh (한국 해비타트의 재난위기경감 개입 효과성 연구: 방글라데시 남부 상습 침수지역 거주민의 정신건강 실태를 중심으로)

  • Suyeon Lee;Eunseok Seo;Goosoon Kwon
    • Journal of the Society of Disaster Information
    • /
    • v.19 no.4
    • /
    • pp.788-805
    • /
    • 2023
  • Purpose: This study aimed to verify the impact of Habitat for Humanity Korea's disaster risk reduction intervention on the mental health and satisfaction with life among residents of southern Bangladesh who had constantly suffered from disaster stress due to perennial flooding. Method: The target group was 138 residents who were pre-surveyed in August 2020 and post-surveyed in November 2021. The interventions consisted of individual incremental housing, public facilities for evacuation, and disaster response training for capacity development. The data were analysed using paired sample t-tests for pre-post changes and one-way analysis of variance to identify differences between treatment groups. Result: The results showed significant improvements in residents' depression, anxiety, somatisation and satisfaction with life after the intervention, with significant differences in mental health levels between the intervention treatments. Specifically, relatively higher disaster mitigation effects were found for individual infrastructure improvements and employment facilities compared to disaster response drills. Conclusion: These results demonstrate the positive role of Habitat for Humanity Korea's disaster risk reduction interventions on the mental health recovery of disaster victims and suggest practical approaches that can be applied in disaster risk areas.

A Study on the Effect of Internal Resources and Business model Innovation of Venture Enterprises on Industrial Property Performance (벤처기업의 내부 자원과 비즈니스모델 혁신성이 산업재산 성과에 미치는 영향 연구)

  • Jeonghoon, Han;Sunghee, Lee
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
    • /
    • v.18 no.1
    • /
    • pp.237-251
    • /
    • 2023
  • This study tried to understand the effect of internal resources, capabilities, and business model innovation of venture enterprises on industrial property performance, as based on previous studies that securing industrial property rights has a positive effect on the technology commercialization of venture companies. Venture company capabilities were classified into intrinsic elements of a company (company's research resources) and creative elements (commercialization capabilities) that implement them, and they were intended to show that they could lead to a company's potential competitiveness through innovation in business models. In order to verify this research purpose, an empirical analysis was conducted on 1,733 corporate companies among venture confirmation companies subject to the 2019 venture company precision survey. It was confirmed that the systematic research organization and commercialization capabilities of venture companies were significant (+) in industrial property performance. However, in the final research model that applied both the rules of the business model's innovation variable, commercialization capability and business model innovation were significant (-), and research organization × business model innovation showed significant results (+). This means that venture companies' excellent resources and capabilities can have a positive impact on industrial property performance individually, but when applying the level of innovation in the actual business model, they must interact with the business model. The results of this study are meaningful in that it is necessary to pursue business model innovation that secures clear differentiators compared to competitors as well as strengthening the company's internal resources and capabilities to secure industrial assets and innovation growth.

  • PDF

Impact of Innovation Cluster Activating Factors on Business Performance: Focusing on the SMEs Case of Daedeok Innopolis (혁신클러스터 활성화 요인이 기업의 경영성과에 미치는 영향: 대덕연구개발특구 중소기업을 중심으로)

  • Park, Hwogeun;Bae, Kwanpyo
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
    • /
    • v.18 no.4
    • /
    • pp.149-163
    • /
    • 2023
  • The policy of promoting innovation clusters aims to enhance the competitiveness of industries by strengthening the linkages between industry sectors and research sectors in specific regions. In Korea, after the concept of innovation clusters was introduced by the OECD in 1997, Korean government actively pursued policies based on this concept in the fields of industry, region, and science and technology. Previous policies and research on the activation of innovation clusters have tended to focus on the exchange and collaboration among members. However, this study focused on enhancing the competitiveness of industries and regions, in other words, strengthening the competitiveness of companies, which is the fundamental reason for fostering innovative clusters. Accordingly, this study aimed to analyze the impact of factors activating innovation clusters on the business performance of SMEs located in the Daedeok Innopolis. To achieve this, based on the essential concept of innovation clusters such as industrial agglomeration factors, networking factors, innovation generation factors, the study derived factors for activating innovation clusters and verified hypotheses using the survey results of 175 companies. Among the factors activating innovation clusters, industrial agglomeration and innovation generation were found to have a positive impact on the business performance of companies. However, networking factors were analyzed to have no significant influence on the business performance of companies. This study differentiates itself by addressing the factors for activating innovation clusters through empirical analysis, unlike previous case-based studies. Furthermore, considering the difference between intuitive judgments on networking factors in innovation clusters and their actual impact on business performance, the study raised the practical significance of conducting a comprehensive examination from various perspectives, such as the socially and culturally embedded structures in the region, the characteristics of specialized industries, and the needs of cluster members, to develop more effective policies for innovation clusters.

  • PDF

Characteristics and Changes of Policy Responses to Local Extinction: A Case of Comprehensive Strategy and Basic Policy on Community-Population-Job Creation in Japan (지방소멸 대응 정책의 특징 및 변화 분석: 일본의 마을·사람·일자리 창생 종합전략 및 기본방침을 사례로)

  • Jang, Seok-Gil Denver;Yang, Ji-Hye;Gim, Tae-Hyoung Tommy
    • Journal of the Korean Regional Science Association
    • /
    • v.40 no.1
    • /
    • pp.37-51
    • /
    • 2024
  • To respond to local extinction, South Korea, under the leadership of the Ministry of the Interior and Safety, identified depopulated areas in 2021 and launched the Local Extinction Response Fund in 2022. However, due to its early stage of implementation, analyzing the characteristics and changes of policy response to local extinction at the central government level remains a challenge. In contrast, Japan, facing similar issues of local extinction as South Korea, has established a robust central government-led response system based on the Regional Revitalization Act and the Comprehensive Strategy and Basic Policy on Community-Population-Job Creation. Hence, this study examines Japan's policy responses to local extinction by analyzing the first and second periods of the Comprehensive Strategy and Basic Policy on Community-Population-Job Creation. For the analysis, topic modeling was employed to enhance text analysis efficiency and accuracy, complemented by expert interviews for validation. The results revealed that the first-period strategy's topics encompassed economy and society, start-up, local government, living condition, service, and industry. Meanwhile, the second-period strategy's topics included resource, the New Normal, woman, digital transformation, industry, region, public-private partnership, and population. The analysis highlights that the policy target, policy direction, and environmental change significantly influenced these policy shifts.

Design of a Decentralized Controller for Deep-sea Mining System (심해저 채광시스템에 대한 분산제어기 설계에 관한 연구)

  • Yeu, Tae-Kyeong;Park, Soung-Jea;Hong, Sup;Kim, Hyung-Woo;Choi, Jong-Su
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
    • /
    • v.13 no.3
    • /
    • pp.252-259
    • /
    • 2008
  • The deep-sea mining system is generally composed of surface vessel, lifting system, buffer, flexible pipe and miner. The mining system can be regarded as a large-scale system in which each subsystem is interconnected to other ones. In order to control a large-scale system, decentralized control approaches have been proposed recently. In this paper, as a basic study on application of decentralized control, firstly, the mining system was modeled in a simplified way. Lifting system and buffer were regarded as a spherical pendulum and the flexible pipe was taken as a two-dimensional linear spring connection. Based on the simplified model dynamics, the mining system can be decentralized two subsystems, the one consisting of surface vessel, lifting system and buffer, and the other, the miner. Next, this paper proposed the design of controller for each decentralized subsystem by regarding the interacting terms as disturbances. The controllers kept the constant distance between two subsystems during the miner was moving on the specified track. Finally, the efficiency of proposed controller was proven through the numerical simulation of the derived model.

Potential Effects of Hikers on Activity Pattern of Mammals in Baekdudaegan Protected Area (등산객의 활동이 백두대간보호지역에 서식하는 포유류 군집의 활동 패턴에 미치는 잠재적 영향)

  • Hyun-Su Hwang;Hyoun-Gi Cha;Naeyoung Kim;Hyungsoo Seo
    • Korean Journal of Environment and Ecology
    • /
    • v.37 no.6
    • /
    • pp.418-428
    • /
    • 2023
  • This study was conducted to clarify the daily activity patterns overlap between hikers and mammals from 2015 to 2019 in the Baekdudaegan protected area. To investigate relationship behaviors between hikers and mammals, we set the camera traps on the ridge of the Baekdudaegan protected area. Daily activity patterns of yellow-throated marten (Martes flavigula) and Siberian chipmunk (Eutamias sibiricus) were highly overlapped with hiker total study periods. Moreover, daily activity patterns of Siberian roe deer (Caperohus pygargus) and water deer (Hydropotes inermis) were highly overlapped with hikers only in spring. In winter, daily activity patterns of wild boar (Sus scrofa) were overlapped with hikers. However, leopard cat (Prionailurus bengalensis), raccoon dog (Nyctereutes procyonoides), and Eurasian badger (Meles leucurus) did not significantly overlap with hikers during the study periods. The daily activity patterns of 8 mammals differed by species-specific behavior and temporal characteristics. Overlap of daily activity patterns between mammals and hikers were differed in each season. Differences in daily activity pattern overlap between mammals and humans may lead to differences in human impact on mammal populations. Information on the interaction between hikers and mammals on species-specific and temporal-specific behavior could be basic ecological data for management and conservation of mammal populations and their habitats.

An Exploratory Study on the Trustworthiness Analysis of Generative AI (생성형 AI의 신뢰도에 대한 탐색적 연구)

  • Soyon Kim;Ji Yeon Cho;Bong Gyou Lee
    • Journal of Internet Computing and Services
    • /
    • v.25 no.1
    • /
    • pp.79-90
    • /
    • 2024
  • This study focused on user trust in ChatGPT, a generative AI technology, and explored the factors that affect usage status and intention to continue using, and whether the influence of trust varies depending on the purpose. For this purpose, the survey was conducted targeting people in their 20s and 30s who use ChatGPT the most. The statistical analysis deploying IBM SPSS 27 and SmartPLS 4.0. A structural equation model was formulated on the foundation of Bhattacherjee's Expectation-Confirmation Model (ECM), employing path analysis and Multi-Group Analysis (MGA) for hypothesis validation. The main findings are as follows: Firstly, ChatGPT is mainly used for specific needs or objectives rather than as a daily tool. The majority of users are cognizant of its hallucination effects; however, this did not hinder its use. Secondly, the hypothesis testing indicated that independent variables such as expectation- confirmation, perceived usefulness, and user satisfaction all exert a positive influence on the dependent variable, the intention for continuance intention. Thirdly, the influence of trust varied depending on the user's purpose in utilizing ChatGPT. trust was significant when ChatGPT is used for information retrieval but not for creative purposes. This study will be used to solve reliability problems in the process of introducing generative AI in society and companies in the future and to establish policies and derive improvement measures for successful employment.

Research on the Development of Distance Metrics for the Clustering of Vessel Trajectories in Korean Coastal Waters (국내 연안 해역 선박 항적 군집화를 위한 항적 간 거리 척도 개발 연구)

  • Seungju Lee;Wonhee Lee;Ji Hong Min;Deuk Jae Cho;Hyunwoo Park
    • Journal of Navigation and Port Research
    • /
    • v.47 no.6
    • /
    • pp.367-375
    • /
    • 2023
  • This study developed a new distance metric for vessel trajectories, applicable to marine traffic control services in the Korean coastal waters. The proposed metric is designed through the weighted summation of the traditional Hausdorff distance, which measures the similarity between spatiotemporal data and incorporates the differences in the average Speed Over Ground (SOG) and the variance in Course Over Ground (COG) between two trajectories. To validate the effectiveness of this new metric, a comparative analysis was conducted using the actual Automatic Identification System (AIS) trajectory data, in conjunction with an agglomerative clustering algorithm. Data visualizations were used to confirm that the results of trajectory clustering, with the new metric, reflect geographical distances and the distribution of vessel behavioral characteristics more accurately, than conventional metrics such as the Hausdorff distance and Dynamic Time Warping distance. Quantitatively, based on the Davies-Bouldin index, the clustering results were found to be superior or comparable and demonstrated exceptional efficiency in computational distance calculation.

Cybersickness and Experience of Viewing VR Contents in Augmented Reality (증강현실에서의 가상현실 콘텐츠 시청 경험과 사이버 멀미)

  • Jiyoung Oh;Minseong Jin;Zion Park;Seyoon Song;Subin Jeon;Yoojung Lee;Haeji Shin;Chai-Youn Kim
    • Science of Emotion and Sensibility
    • /
    • v.26 no.4
    • /
    • pp.103-114
    • /
    • 2023
  • Augmented reality (AR) and virtual reality (VR) differ fundamentally, with AR overlaying computer-generated information onto the real world in a nonimmersive way. Despite extensive research on cybersickness in VR, its occurrence in AR has received less attention (Vovk et al., 2018). This study examines cybersickness and discomfort associated with AR usage, focusing on the impact of content intensity and exposure time. Participants viewed 30-minute racing simulation game clips through AR equipment, varying in racing speed to alter content intensity. Cybersickness was assessed subjectively using the Simulator sickness questionnaire (SSQ; Kennedy et al., 1993). Findings revealed a progressive increase in cybersickness with longer exposure, persisting even after removing the AR equipment. Contrarily, content intensity did not significantly influence cybersickness levels. Analysis of the SSQ subscales revealed higher oculomotor (O) scores compared to nausea (N) and disorientation (D), suggesting that discomfort primarily stemmed from oculomotor strain. The study highlights distinct differences in user experience between AR and VR, specifically in subjective responses.