• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.425-425
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• 2021

북평산업단지내 공공폐수처리시설(6,500톤/일)의 가동률은 30% 이하로 매우 저조하며, 폐수배출업체는 29개소로 그 수가 적어 배출오염부하량 비율에 따른 처리비용이 일부 업체의 경우 과도하게 부과되고 있는 실정이다. 입주업체 운영비용 부담을 저감하기 위해 해당 지자체에서는 운영비용의 65% 이내에서 일정금액을 지원하고 있으나, 동일업종에 대한 원인자비용부담금 비율의 경우, 동해시 A업체는 30.18%로 타 지역 B업체의 4.83% 보다 높은 것으로 나타났으며, 지자체 지원금을 제외한 순수 처리부과금의 경우 A업체가 2배 이상 큰 것으로 나타났다. 이에 북평산업단지 공공폐수처리시설의 전체 운영비 절감을 위한 효율적인 운영방안 마련이 필요하다. 따라서 본 연구에서는 북평산업단지내 공공폐수처리시설의 운영 및 관리현황을 검토하여 효율적인 운영방안을 제시하고자 하였다. 현재 운영시설에 대한 현황을 파악하고 관련 법률 및 계획등을 검토한 결과, 북평산단 지역은 하수처리 구역이 아닌 공공폐수처리구역으로 산업폐수의 공공하수도처리시설 연계처리 지침에 따라 인근 공공하수처리시설과의 연계처리가 불가한 것으로 나타났다. 또한, 환경부에서는 가동률이 저조한 처리시설에 대해서는 시설개선을 통한 방안을 제시하고 있어 현 처리시설의 공정개선을 통한 운영비 절감방안이 가장 효율적인 것으로 판단되었다. 이에, 현재 생물 반응조 후단에서 운영 중인 가압 부상조에 새로운 배관을 설치하여, 최초 침전지 유출수를 가압부상조 처리 후, 생물 반응조로 유입하고, 최종 침전 후 총인을 제어 할 수 있는 약품투입 시설을 설치하는 공정 개선 방안을 제시하였다. 이처럼 생물 반응조 이전에 가압부상조를 설치하고, 후단 가압 부상조 미운영시 공정개선 전·후에 따른 총 슬러지 발생량은 24.2%, 탈수케익 처리비용은 27.6% 절감할 수 있는 것으로 산정되었으며, 전체 처리시설에 대한 총 운영비 감소율은 13.4%로 분석되었다.

• Journal of the Daesoon Academy of Sciences
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• v.23
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• pp.37-105
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• 2014

'공사(公事)'는 『전경』이 담고 있는 매우 중요한 종교 문화적 현상이다. 그리고 그 속에는 매우 깊은 사상적 의미가 내포되어 있다. 대순진리회 공사개념의 연원은 중국 고대의 경전과 문헌에서 그 단서를 찾아볼 수 있으나, 그것은 결코 단순히 중국의 것을 답습한 것이 아니다. 강성상제와 도주 조정산께서는 '묵은 하늘'의 음양 혼란 시대에 공사를 행하였기 때문에, 도수를 바로잡는 공사는 근본부터 바로잡는다는 의미가 있으며, 새로운 시대를 의미하는 '개벽'도 이에 포함된다. 중도, 화평, 공정은 질서가 바로 잡힌 사회의 시작을 의미하며, 이는 새로운 생활을 창조하는 데 있어 중요한 현실적 의의를 지닌다. 전체적으로 볼 때 대순진리회의 공사는 사회의 변화와 사회적 요구에 응답하여 생겨난 종교문화 활동이다. 이러한 종교문화 활동은 일종의 기호로서, 상징성을 갖춘 의식을 거행하는 것이다. 공사는 명부의 한을 해결하는 것으로부터 시작되는데, 이는 근본을 중시한다는 의미이며, 태초로 거슬러 올라가 사회를 다스리는 커다란 방향을 전개한다는 것이다. '역도(逆度)'를 조정하는 공사에서는 사회적 관점에서 보자면, 역사가 남긴 문제에 대해 고민하고 해결하려는 태도를 뜻한다. 이는 민생문제를 매우 중시하였음과 인간의 도에 대해 경외심과 존중을 표현하고 있음이 나타내며, 결국 '보세(普世)'의 의미를 지닌다고 볼 수 있다. 공사를 실천하는 방법은 '신생활법'이며, 이는 인(仁)과 인류와 동물에 대한 자비심을 강조하며 '삼계개벽'의 개혁정신과 창조적 사고를 나타낸다. 이로써 '통달(通達)'과 '대도(大道)'의 정신을 나타내었다. 이로 볼 때, 인간의 삶을 인도하며, 궁극적으로는 지상천국을 건설하고자 하는 정신이 공사의 개념 속에 분명하게 드러나 있음을 알 수 있다.

• Journal of the Korean Wood Science and Technology
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• v.39 no.4
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• pp.344-350
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• 2011

In this study, LVLs of radiata pine were fabricated with non-preservative treated veneers, CuAz treated veneers, and ACQ treated veneers, using aqueous vinyl urethane adhesive and phenol modified resorcinol resin adhesive. Then density gradient, bonding strength, bending properties and decay resistance of LVLs were evaluated. As results, the cone-shaped and higher density gradient pattern was found in layer close to glueline. After cyclic water boiled test, the LVL bonded with aqueous vinyl urethane resin adhesive was delaminated in all layers or partly delaminated including check, chasm in glueline layer. In the case of LVL bonded with phenol modified resorcinol resin adhesive, despite slight cupping due to great glueline stress and vertical check between glueline layers, it was observed that the bonding strength to delamination was higher, owing to most absence of delamination through overall glueline. On the other hand, in the decay test, mass loss by brown rot fungi was greater than white rot fungi in LVL bonded with aqueous vinyl urethane resin adhesive. However, in LVL bonded with phenol modified resorcinol resin adhesive, the mass loss by brown rot fungi was slight and non-preservative treated LVL was low. The mass loss of preservative-treated LVL was 0 (zero), showing the high decay resistance effect.

• Journal of the Korean Society for Nondestructive Testing
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• v.25 no.4
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• pp.294-303
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• 2005

This paper describes the analysis results of a series f Round-Robin test that was performed to intercompare inspection and diagnosis techniques for characterization of pressure tube f a pressurized heavy water reactor under the Coordinated Research Project(CRP) of IAEA's nuclear Power Programme. For this test, six nations, Korea, Canada, India, Argentina, Rumania, and China that currently have pressurized heavy water reactors under operation involved, and the "KOR-1" pressure tube sample prepared by Korea was used. Two kinds of NDE technique, ultrasonic and eddy current test, were applied for these tests. The "KOR-1" pressure tube sample contains total 12 artificial flaws such as crack-like EDM notches, wear that is similar to the real flaws and can be produced on the pressure tubes during plant operation. Test results showed that seven laboratories from six nations detected all twelve flaws in "KOR-1" specimen by using ultrasonic and eddy current test methods, and ultrasonic test method was more accurate than eddy current test method in flaw detectin and sizing. ID flaws in pressure tube sample were more easily detected and accurately sized than OD flaws.

• Journal of the Korean Wood Science and Technology
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• v.31 no.4
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• pp.24-30
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• 2003

In order to develop structural 'bamboo zephyr board', properties of boards produced by various methods making zephyr were estimated. All of boards were tested with KS(Korean Standards) F 3014 Particle board, and results were summarized as follow. The zephyr boards produced by final 1.5 mm roller space had the best properties(MOR, MOE and IB strength) among boards produced by different final roller space. Also, they had the best properties(MOR and MOE) in bending test after 1 hour soaking treatment after 2 hour-boiling in water, which were similar to properties of boards in dry-condition. Thickness swelling(TS) of all boards was less than 12% required to the Korean Standards A 3014. Zephyr boards produced by final 1.5 mm roller space also had the lowest values among all of boards. Boards produced by non-treatment (in green condition) had the better strength than those of boards produced by different pre-treatment methods(boiling in water and in 0.3% NaOH) in bending test.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.9
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• pp.206-214
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• 2018

This study was conducted from August 2017 to May 2018. Beer was prepared by different ratio of rice and malt and different types of beer, and quality analysis were conducted. The ratio of rice and malt was divided into 0:100 (S0), 20:80 (S1), 40:60 (S2), 60:40 (S3) and 80:20 respectively. We compared the characteristics of the mashing methods(infusion and decoction method) and investigated the characteristics of different types of beer (lager, ale, wheat beer) using yeast (bottom and top yeast). Even with different ratios of rice and malt, normal infusion time was observed and the iodine test was confirmed to be normal. Also, the mashing proceeded normally and the sugar content of the primary wort was between $21.0{\sim}21^{\circ}brix$. In mashing method, the mash concentration, color and flavor of wort were the highest in the three mash method(decoction method). During the fermentation period of beer, the sugar content, pH and yeast number did not differ significantly depending on the ratio of rice and malt, and the type of yeast. Higher alcohol and esters also had no correlation with the ratio of rice to malt, and wheat beer was somewhat higher. The higher the ratio of rice, the more the color intensity(EBC) decreased, the bitter unit(BU) and the preference decreased. When the rice ratio was higher than the malt rate, the degree of preference decreased significantly. Based on the results of this study, it is expected that the rice ratio will be less than the malt ratio and the flavor of the wort will be improved by using the deccoction method. If the malt is supplemented with the use of the special malt and the various hops according to the beer type, it may be helpful to manufacture rice beer.

• Journal of Digital Convergence
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• v.14 no.11
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• pp.181-191
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• 2016

The purpose of this study is to analyze the management performance of the companies in the auto parts production requirements of new management techniques ISO9001 quality management system requirements for management innovation perspective in convergence age. For this purpose, we conducted a survey visiting the auto parts manufacturers. The results were as follows. First, among the details of the four key requirements of the ISO 9001 quality management systems in small and medium component suppliers, managers and responsible resource management showed a positive impact on business performance. In addition, based on the results of the investigation of the differences by grade, the higher rank group executive responsibilities, sub-grade group showed a low awareness of the quality management according to ISO 9001. This will contribute to establishing the guidelines and Improvement Consulting Strategies to improve productivity in small and medium automotive rubber bellows automotive parts production.

• The Journal of Korean Institute for Practical Engineering Education
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• v.3 no.2
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• pp.75-82
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• 2011

Recently the technology of green growth became more important role among the problems of running out of fossil fuels and global warming. To procure a new growth power combined with energy and green growth, a lot of investment for wind power, photovoltaics system, fuel cell and biofuel expanded day by day. Among these, wing power has a merit of a highly economic and no discharge of toxic substance. These days government and industrial companies actively support the development of wind power technology with lots of investment, but domestic related education and equipment still stay in research level when it is compared with foreign advanced countries which lead the wind power technology. Therefore to expand the base of basic skill required in the related industrials and to advance technology, we are in the situation to be needed a development of a new curriculum and educational equipment which is analogous with the actual industrial system. In this paper a development of a new educational equipment for the learning of turbine control is introduced. This educational equipment has been developed for students to get easy understanding for the theory of wind turbine control. And finally to demonstrate the effect of the use of the developed equipments and curriculum a questionnaire carried out.

• Nuclear Engineering and Technology
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• v.11 no.1
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• pp.1-20
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• 1979

Neutron inelastic scattering studies on polycrystalline hydrates, NaBr-2$H_2O$ and BaCl$_2$-2$H_2O$ have been performed to observe librational modes. Assuming all observed peaks are from the $H_2O$ librational origin, the weighted frequency distribution functions are obtained by eliminating the contributions from the higher order processes. All of theoretical frequencies obtained using FG matrix method are dus to highly mixed modes, and therefore the modes identified as significant $H_2O$ librationat modes from their large potential energy distributions are assigned to the observed peaks. The H-bond interactions are estimated using a modified Lippincott Schroeder potential function, and the applicability of the potential function to the H-bond with highly bent or bifurcated configuration is examined on the basis of the shape of $H_2O$ librational potential energies. Some discussions are given on the usefulness of introducing O-H…Y bending terms in addition to the H…Y stretching in similar frequency calculation in order to obtain more information on the nature of H-bond. Also the purity and symmetry properties of the $H_2O$ librational modes are discussed using group theoretical analyses.

• Journal of KIISE:Computing Practices and Letters
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• v.8 no.6
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• pp.630-638
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• 2002

Debugging for application Programs running in embedded Linux systems has mostly been done remotely due to the limited resources of the target systems. The gdb, which is one of the most famous debugger in Linux systems, does not support the debugging of the child processes which is created by the fork system call in local and remote environments. Therefore, by using gdb, developers can debug the application programs that have single-process structure in local and remote environments, but they cannot debug the application programs that have multi-process structures by using gdb in remote environments. Also, although developers can debug the application programs that have multi-process structures by using gdb in local environments, it needs additional and unnecessary codings. In this paper, we presents the remote debugging scheme that can be used for debugging multi-process structured applications. The proposed scheme is implemented by using the library wrapping scheme, and also uses the conventional system components such as gdb and gdbserver.