• Atmosphere
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• v.16 no.4
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• pp.343-350
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• 2006

The rainfall amount measured by Chugugi at Gongju was found in "Gaksadeungnok". Gaksadeungnok is ancient documents from governmental offices in Joseon dynasty. Rainfall data at Gongju are restored for 18 years of 19th century. In 1871, total rainfall amount is 1,338 mm. It is different by about 11% in the amount compared with Seoul Chugugi rainfall in 1871 and Daejeon modern raingauge measurement result during the 30 years (1971-2000). Annual march of monthly rainfall data at Gongju is similar with that of Seoul. Based on the results, restored rainfall at Gongju is consistent with Seoul Chugugi rainfall data. The rainfall amount restored in this study is measured by Chugugi which was installed at Gongju, in Chung-Cheong province. Furthermore, Gaksadeungnok includes rainfall amount reports by agricultural tool measurement in addition to Chugugi measurement. These facts prove a network of rain gauge in Joseon dynasty.

• Journal of the Chungcheong Mathematical Society
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• v.25 no.2
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• pp.201-215
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• 2012

In this paper, we prove the stability in random normed spaces via fixed point method for the functional equation $f(x+y+z+w)\;+\;2f(x)\;+\;2f(y)\;+\;2f(z)\;+\;2f(w)\;-\;f(x+y)\;-\;f(x+z)\;-\;f(x+w)\;-\;f(y+z)\;-\;f(y+w)\;-\;f(z+w)=0$.

• Journal of Korean Society of Archives and Records Management
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• v.20 no.2
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• pp.115-121
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• 2020

This article introduces the process of building Gongjuhak Archive that collects and databases data from various fields related to the region, enabling people to easily establish Gongju locality and lay the foundation for Gongju Studies. Gongjuhak Archive is built in accordance with the win-win development agreement between both Gongju City and Gongju University, and is proud to have played a pioneering role in the regional studies archive established by the local government. Therefore, we hope to share our concerns and experiences in building Gongjuhak Archive and to successfully develop it with regional studies archive building institutions across the country.

• Korean Journal of Veterinary Service
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• v.26 no.1
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• pp.19-26
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• 2003

This study was attempted to survey on the prevalence of canine heartworm(Dirofilaria immitis) infection among 100 dogs(male 39, female 61) on the nine breeding farms in eastern Chungnam province in December 2002. Blood samples taken from dogs were examined for the presence of D immitis microfilaria by the modified Knott's test and an antigen test was using FASTest$\^$/ HW Antigne kit (Mega Cor A-6912 Horbranz-Austraia). 1. Eleven(11.0%) of the 100 examined dogs were microfilaria positive, while nineteen dogs(19.0%) were antigen positive, which suggested that the antigen test was more sensitive than the microfilarial test in detecting heartworm infection. 2. Infected dogs were observed higher more at 2 years older ages(4/48, 8.3%) and male(9/39, 23.1%) than young ages(4/48, 8.3%) and female(10/61, 16.4%). 3. The regional infection rates were of Gongju(15/43, 34.9%), Geumsan(4.27, 14.8%), while none of infection dogs in Yeongi(0/30, 0%). 4. Survey for hematological values of D immitis infected dogs : WBC and eosinophils were 21.4${\pm}$7.2 k/${\mu}\ell$, 3.5${\pm}$0.4 k/${\mu}\ell$, respectively. In conculsion, this study could be overemphasized the importance of control program the heartworm in eastern Chungnam province

• Journal of Plant Biology
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• v.22 no.4
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• pp.141-145
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• 1979

Phytoplanktons and environmental conditions in the Geum River near Gongju were investigated at three stations in July, 1979. Fifty eight kinds of hytoplanktons were identified and of these, Cyanophyta and Chlorophyta in this area appeared more in the number of species than that in the Han River. The number of species of Chlorophyta was double or more at station 2 and station 3 which were situated near Gongju than at station 1, upperstream of Gongju and the number of species of phytoplankton was also higher at station 2 and station 3 than at station 1. In physicochemcial conditons, water temperature at all of three stations was lower than air temperature and pH might have no significance among these three stations. All of these three stations were characterized as the slower flowing water type of downstream in diatom river community.

• Korean Journal of Veterinary Service
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• v.24 no.1
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• pp.9-14
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• 2001

This study was carried out to investigate the prevalence of Neospora caninum infection in dairy cow and Korean native cattle(KNC), raised in several Chungnam province. To determine the prevalence of antibodies to N caninum, a total of five hundred fifty six sera were analyzed by indirected fluorescent antibody(IFA) test. Five hundred thirty three sera were collected from fifteen dairy herds and twenty three sera were taken from fourteen KNC herds from December 1999 to November 2000. Seropositive ratio of the dairy cattle sera were individually or herdly tested and showed 64.2% and 93.3%, respectively. It was recorded with 78.6% and 47.8% in KNC. The seropositive ratio of dairy cattle was depended on the size of ranch. It was 92.2, 60.7 and 57.9% at the size of less than thirty, thirty to seventy and more than seventy one cattle, respectively However, it was different from the province of Chungnam. The seropositive ratio to N caninum of dairy cattle were 79.5, 53.1, 61.4 and 31.1% at Gongju, Yeongi, Geumsan and Cheongwon, respectively. It showed difference at the growth stage and sex of cattle. The seropositive ratios of N caninum of calf, heifer, premiparous, multiparous(2nd-5th), multiparous (6>th) and bulls confirmed to 25.0, 50.3, 70.3, 71.2, 50.0 and 50.0%, respectively. It was related with brucellosis in cattle. The infected ones with brucellosis were 75.7% of seropositive ratios to N caninum. The results of this study indicated that N caninum infection was widespread in Chungnam province and confirmed existing with brucellosis in cattle.

• Journal of Wetlands Research
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• v.14 no.4
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• pp.537-545
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• 2012

Decay rate and nutrient dynamics during leaf litter decomposition of deciduous Quercus acutissima were compared between Gongju and Jinju for 33 months from December 2008 through March 2011. Percent remaining weight of Q. acutissima leaf litter after 33 months elapsed in Gongju and in Jinju was $41.2{\pm}0.4%$ and $28.3{\pm}0.6%$, and decay constant (k) was 0.39 and 0.61, respectively. Decomposition in Jinju was significantly faster than that in Gongju. This seemed to be related to higher temperature and precipitation in Jinju than those in Gongju during the experimental period. Initial C/N and C/P ratio of Q. acutissima leaf litter was 46.8 and 270.9, respectively. After 33 months elapsed, C/N and C/P ratios in Gongju decreased to 22.0 and 106.8, and those in Jinju decreased to 19.2 and 170.2, respectively. Initial concentration of N, P, K, Ca and Mg in Q. acutissima leaf litter was 8.31, 0.44, 4.18, 9.38, 1.37 mg/g, respectively. After 33 month elapsed, remaining N, P, K, Ca and Mg were 91.0, 85.4, 30.2, 47.9, 11.7% in Gongju, and 67.0, 54.2, 19.9, 30.0, 40.8% in Jinju, respectively. Except for Mg, remaining nutrients of decomposing leaf litter in Jinju were lower than those in Gongju. In case of N and P, initial immobilization was observed, however, only mineralization was observed in K, Ca and Mg during the whole experimental period.

• Journal of the Chungcheong Mathematical Society
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• v.36 no.2
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• pp.107-123
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• 2023

In this paper, we present some hyperstability results for a general quintic functional equation and a general septic functional equation.

• Honam Mathematical Journal
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• v.46 no.1
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• pp.146-167
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• 2024

In this paper, we investigate the stability of the general decic functional equation $$\sum_{i=0}^{11}_{11}C_i(-1)^{11-i}f(x+iy)=0$$ in the sense of Rassias.

• Korean Journal of Psychosomatic Medicine
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• v.30 no.1
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• pp.7-15
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• 2022

Objectives : The purpose of this study is to identify the effect of office workers' stress level and stress vulnerability on heart rate variability (HRV), confirm the significance of objective stress indicators obtained through subjective stress and heart rate variability devices, and examine their effectiveness as an integrated stress measurement tool in community mental health projects. Methods : From June to July in 2020, 929 workers participated in the stress management and mental health promotion project carried out by K hospital, and their recorded database was used for study analysis with their agreements. Multiple linear regression analysis was performed to find out the effects of general stress level, and stress vulnerability on heart rate variability. Results : All general characteristics were found to have a significant effect on SDNN (ln), RMSSD (ln), LF (ln), and HF (ln), but work experience did not significantly affect RMSSD (ln). Stress level and stress vulnerability did not significantly affect heart rate variability, but stress perception, a sub-factor of stress level, was found to have a significant effect on RMSSD (ln) (β=0.118, p=0.023). Conclusions : In this study, stress perception, a sub-factor of stress level, was found to be a factor affecting RMSSD (ln). This indicates an association with the activity of parasympathetic nerves in stressful situations, and more follow-up studies are needed to use it as a direct indicator of chronic stress and integrated stress in the community mental health field.