• 산업경영시스템학회지
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• 제43권2호
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• pp.126-136
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• 2020

Recently, unmanned aerial vehicles (UAV, Drone) are highly regarded for their potential in the agricultural field, and research and development are actively conducted for various purposes. Therefore, in this study, to present a framework for tracking research trends in UAV use in the agricultural field, we secured a keyword search strategy and analyzed social network, a methodology used to analyze recent research trends or technological trends as an analysis model applied. This study consists of three stages. As a first step in data acquisition, search terms and search formulas were developed for experts in accordance with the Keyword Search Strategy. Data collection was conducted based on completed search terms and search expressions. As a second step, frequency analysis was conducted by country, academic field, and journal based on the number of thesis presentations. Finally, social network analysis was performed. The analysis used the open source programming language 'Python'. Thanks to the efficiency and convenience of unmanned aerial vehicles, this field is growing rapidly and China and the United States are leading global research. Korea ranked 18th, and bold investment in this field is needed to advance agriculture. The results of this study's analysis could be used as important information in government policy making.

• 한국IT서비스학회지
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• 제23권1호
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• pp.55-79
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• 2024

Korea, which is expected to enter a super-aged society in 2025, is facing the most worrisome crisis worldwide. Efforts are urgently required to examine problems and countermeasures from various angles and to improve the shortcomings. In this regard, from a new viewpoint, we intend to derive useful implications by applying the recent natural language processing techniques to online articles. More specifically, we derive three research questions: First, what topics are being reported in the online media and what is the public's response to them? Second, what is the relationship between these aging-related topics and individual happiness factors? Third, what are the strategic directions and implications for benchmarking discussed to solve the problem of population aging? To find answers to these, we collect Naver portal articles related to population aging and their classification categories, comments, and number of comments, including other numerical data. From the data, we firstly derive 33 topics with a semi-supervised BERTopic by reflecting article classification information that was not used in previous studies, conducting sentiment analysis of comments on them with a current open-source large language model. We also examine the relationship between the derived topics and personal happiness factors extended to Alderfer's ERG dimension, carrying out additional 3~4-gram keyword frequency analysis, trend analysis, text network analysis based on 3~4-gram keywords, etc. Through this multifaceted approach, we present diverse fresh insights from practical and theoretical perspectives.

• 한국임상보건과학회지
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• 제4권2호
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• pp.582-592
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• 2016

Purpose. For more effective hospital management, it analyzes the trend through general characteristics, balance sheet, income statement, and financial ratio analysis, grasps the causes of the problems, and analyzes management of the hospital in order to use the result as baseline data for development of the hospital in the future. Methods. The collected data of 3 years from 2011 to 2013 about 3 tertiary hospitals in metropolitan cities from Alio (provider of public institution information; www.alio.go.kr), Health Insurance Review & Assessment Service (www.hira.or.kr), and the website of the Ministry of Health and Welfare (www.mw.go.kr) were analyzed and general characteristics, balance sheet, income statement, and financial ratio, analysis are used as data. Results & Conclusions. From the result of data analysis from 2011 to 2013, general characteristics, balance sheet, income statement, financial ratio analysis, and pie charts could lead to conclusions as follows. In the result of comprehensive analysis, the 3 tertiary hospitals showed increase of fixed expense due to extension of the buildings and so did the scale of fund and asset. Although medical revenue increased, the margin of increase for medical expense was greater than that of medical revenue, which consequently led to loss. In prediction for the 3 tertiary hospitals based on characteristics so far, it is expected to see improved revenue structure after building extension is completed, but it is necessary to exert management effort to maintain its optimal level by enhancement in stability of management and inventory turnover through management of inventories.

• Asian Pacific Journal of Cancer Prevention
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• 제17권3호
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• pp.1493-1498
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• 2016

Background: Breast cancer is the most common cancer in women worldwide with a rising incidence rate in most countries. Considering the increase in life expectancy and change in lifestyle of Iranian women, this study investigated the age-adjusted trend of breast cancer incidence during 2000-2009 and predicted its incidence to 2020. Materials and Methods: The 1997 and 2006 census results were used for the projection of female population by age through the cohort-component method over the studied years. Data from the Iranian cancer registration system were used to calculate the annual incidence rate of breast cancer. The age-adjusted incidence rate was then calculated using the WHO standard population distribution. The five-year-age-specific incidence rates were also obtained for each year and future incidence was determined using the trend analysis method. Annual percentage change (APC) was calculated through the joinpoint regression method. Results: The bias adjusted incidence rate of breast cancer increased from 16.7 per 100,000 women in 2000 to 33.6 per 100,000 women in 2009. The incidence of breast cancer had a growing trend in almost all age groups above 30 years over the studied years. In this period, the age groups of 45-65 years had the highest incidence. Investigation into the joinpoint curve showed that the curve had a steep slope with an APC of 23.4% before the first joinpoint, but became milder after this. From 2005 to 2009, the APC was calculated as 2.7%, through which the incidence of breast cancer in 2020 was predicted as 63.0 per 100,000 women. Conclusions: The age-adjusted incidence rate of breast cancer continues to increas in Iranian women. It is predicted that this trend will continue until 2020. Therefore, it seems necessary to prioritize the prevention, control and care for breast cancer in Iran.

• 한국콘텐츠학회논문지
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• 제9권2호
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• pp.125-132
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• 2009

세계의 경제가 지식 기반 경제로 급변함에 따라 특허경쟁력을 강화하기 위한 노력을 다각적으로 실시하고 있다. 이러한 특허경쟁력을 강화하기 위해 일반적으로 해당 기술 분야에 대한 특허동향조사를 통해 다양한 분석을 하고 있지만 대부분 현재까지의 기술동향에 대한 자료를 통계적으로 표현하거나 핵심 기술에 대한 전문가의 정성분석을 포함하는 정도에 국한되고 있다. 따라서 본 논문에서는 제한적으로 활용되고 있는 특허정보를 이용하여 향후 기술 확산 형태를 예측해 보고자 한다. 이를 위해 일반적으로 많이 사용되고 있는 확산모형인 Bass 모형과 Logistic 모형을 통해 실험을 진행하였고, 각 모형의 성능을 평가하기 위해 MSE값과 MAPE값을 이용하였다. 입력데이터로는 NCW 정보보호기술과 관련된 특허데이터를 사용함으로써 기존 특허동향조사와 연계한 심화분석을 도출하였다. 실험결과 NCW 정보보호기술에 대한 확산을 예측하기 위한 모형은 Logistic 모형이 더 우수함을 알 수 있었으며, NCW 정보보호기술은 2008년 현재 점차 기술 성숙기에 접어들고 있음을 예측할 수 있었다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권19호
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• pp.8345-8349
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• 2014

Background: Cancer is an increasing cause of mortality and morbidity worldwide. Incidences of common cancers has been growing in different provinces of Iran in recent years but trends in Khuzestan which shares a border with Iraq and is located in south west of Iran have not been investigated. This study aimed to assess secular changes in incidences of common cancers in Khuzestan province from 2004 to 2008. Materials and Methods: Data were collected from Khuzestan cancer registry which is a branch of Iranian Ministry of Health Cancer Registry (http://ircancer.ir) for the period 2004-2008. Data were presented as incidence rates by site, sex, age, using the crude rate and age-standardized rate (ASR) per $10^5$ persons. A direct method of standardization was applied according to the WHO guideline and data analysis was performed using the SPSS package. Results: During the 2004-2008 period, 14,893 new cases of cancer were registered in Khuzestan cancer registry. The age-standardized incidence rate of all cancers was 153.7 per $10^5$ in males and 156.4 per $10^5$ in females. The incidence was increased over the period of five years. The most incident cancers among males were skin cancer ($ASR=18.7/10^5$), stomach cancer ($ASR13.8/10^5$), lung cancer ($ASR12.9/10^5$), leukemia ($ASR=12.6/10^5$) and prostate cancer ($ASR=12.4/10^5$). In females, the most incident cancers were breast cancer ($ASR=41/10^5$), skin cancer ($ASR=16.4/10^5$), colorectal cancer ($ASR=10.0/10^5$), leukemia ($ASR=8.1/10^5$) and lung cancer ($ASR=6.9/10^5$). Conclusions: Incidences of various cancers are rising in Khuzestan. It is necessary to develop and implement comprehensive cancer control programs in this region which could be monitored and evaluated by the future trend data from Khuzestan cancer registry.

• 한국수자원학회논문집
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• 제44권8호
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• pp.683-694
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• 2011

기후변화에 따른 지역적 영향인 기온 상승과 강수량 변화로 인한 수자원 변화 특성을 파악하기 위하여 기상청(KMA)으로부터 전국 59개 관측지점에 대해서 1973년부터 2009년까지 강수량 및 기온자료를 이용하여 산정한 강수효율자료와 국가수자원관리종합시스템(WAMIS)으로부터 1966년부터 2007년까지 PRMS 모의 유출량 자료를 수집, 분석하였다. 분석결과, 전반적으로 강수효율의 거동은 강수량의 변화 특성을 따르나 지역적으로 강수량이 증가함에도 불구하고 기온 상승에 따라 강수효율이 감소하는 거동을 보였으며, 이는 유출량의 변화 특성과 유사하였다. 또한 유출량의 평균대비 변화율은 강수량 변화보다 상당히 크게 나타나, 기후변화의 영향에 민감한 것으로 나타났다. 강수량이 증가하는 5월~9월을 제외한 전체 기간에 대하여 강수효율은 강수량보다 더 유의한 감소 경향을 나타내고 있어 해당기간의 가용 수자원량이 줄어들 것으로 판단되며, 이러한 특성은 봄, 가을 및 겨울철 수자원 관리에 반영되어야 할 것이다.

• Asian Pacific Journal of Cancer Prevention
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• 제16권8호
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• pp.3097-3100
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• 2015

Projections of cancer cases are particularly useful in developing countries to plan and prioritize both diagnostic and treatment facilities. In the prediction of cancer cases for the future period say after 5 years or after 10 years, it is imperative to use the knowledge of past time trends in incidence rates as well as in population at risk. In most of the recently published studies the duration for which the time trend was assessed was more than 10 years while in few studies the duration was between 5-7 years. This raises the question as to what is the optimum time period which should be used for assessment of time trends and projections. Thus, the present paper explores the suitability of different time periods to predict the future rates so that the valid projections of cancer burden can be done for India. The cancer incidence data of selected cancer sites of Bangalore, Bhopal, Chennai, Delhi and Mumbai PBCR for the period of 1991-2009 was utilized. The three time periods were selected namely 1991-2005; 1996-2005, 1999-2005 to assess the time trends and projections. For the five selected sites, each for males and females and for each registry, the time trend was assessed and the linear regression equation was obtained to give prediction for the years 2006, 2007, 2008 and 2009. These predictions were compared with actual incidence data. The time period giving the least error in prediction was adjudged as the best. The result of the current analysis suggested that for projections of cancer cases, the 10 years duration data are most appropriate as compared to 7 year or 15 year incidence data.

• Safety and Health at Work
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• 제9권2호
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• pp.144-148
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• 2018

Background: The objective of this study is to find temporal trends in the associations between cardiovascular disease and occupational risk factors in the context of the Canadian population. Methods: Population data were analyzed from the Canadian Community Health Survey (CCHS) collected between 2001 and 2014 for trends over time between heart disease and various occupational risk factors: hours worked, physical exertion at work, and occupation type (management/arts/education, business/finance, sales/services, trades/transportations, and primary industry/processing). Results: We found no significant difference in the average number of hours worked/wk between individuals who report having heart disease in all years of data except in 2011 ($F_{1,96}=7.02$, p = 0.009) and 2012 ($F_{1,96}=8.86$, p = 0.004). We also found a significant difference in the degree of physical exertion at work in 2001 ($F_{1,79}=7.45$, p = 0.008). There were statistically significant results of occupation type on self-reported heart disease from 2003 to 2014. Conclusion: Canadian data from the CCHS do not exhibit a trend toward an association between heart disease and the number of hours worked/wk. There is an association between heart disease and physical exertion at work, but the trend is inconsistent. The data indicate a trend toward an association between heart disease and occupation type, but further analysis is required to determine which occupation type may be associated with heart disease.

• 대한토목학회논문집
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• 제30권1B호
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• pp.1-11
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• 2010

본 논문에서는 측우기 관측 자료계열(CWK)과 근대우량계 관측 자료계열(MRG)의 월별 장기변화 특성을 파악하기 위하여 통계적 경향성 검정방법 5가지를 이용하여 각 자료계열의 경향성 여부를 검정하였다. 더불어 각 자료계열별로 연도별 시간축과 월별 시간축을 동시에 고려한 2차원 LOWESS 회귀분석을 실시하여 강우의 변동 특성을 분석하였다. 경향성 분석결과 검정방법별로 95% 신뢰수준에서 경향성에 대해 큰 유의성이 있다고 보기는 어려웠다. 4가지 강우특성에 대한 2차원 LOWESS 회귀분석 결과, 1980년 이후부터 강우의 양적 증가추세와 더불어 강우의 월간 변화폭도 급격한 증가추세를 보이고 있는 것으로 나타났다.