• Journal of radiological science and technology
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• v.31 no.3
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• pp.287-292
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• 2008

Position information of radiation interactions in detection material is essential to reconstruct a radiation source image. With most position sensing techniques, the position information of a single interaction inside the detectors can be precisely obtained. Each interaction position of multi-scattering inside scintillators, however, can not be individually measured and only the average of the scattering positions can be obtained, which causes the uncertainty in the measured interaction position. In this paper, the position uncertainties due to the multi-scattering were calculated by Monte Carlo simulation. The simulation model was a 50 by 50 by 5 mm $LaCl_3$(Ce) scintillator(pixel size is 2 by 2 by 5mm) which was utilized for the dual collimation camera. The dual collimation camera uses the information from both photoelectric effect and Compton scattering, and therefore, position uncertainties for both partial and full energy deposition of radiation interactions are calculated. In the case of partial energy deposition(PED), the standard deviations of positions are less than $1{\sim}2mm$, which means the uncertainty caused by multi-scattering is not significant. Because the effect of the multi-scattering with PED is insignificant, the multi-scattering has little effect on the performance of Compton imaging of dual collimation camera. In the case of full energy deposition(FED), however, the standard deviation of the positions is about twice that of the pixel size of the 1stdetector, except for 122keV incident radiations. Therefore, the standard deviations caused by multi-scatterings should be considered in the design of the coded mask of the dual collimation camera to avoid artifact on the reconstructed image. The position uncertainties of the FEDs are much larger than those of the PEDs for all radiation energies and the ratio of PEDs to FEDs increases when the incident radiation energy increases. The position uncertainties of both PEDs and FEDs are dependent on the incident radiation energy.

• Journal of Intelligence and Information Systems
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• v.23 no.4
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• pp.1-31
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• 2017

Modern businesses are adopting new technologies to serve their markets better as well as to improve efficiency and productivity. The advertising industry has continuously experienced disruptions from the traditional channels (radio, television and print media) to new complex ones including internet, social media and mobile-based advertising. This case study focuses on proposing intelligent advertising business model in Seoul's metro network. Seoul has one of the world's busiest metro network and transports a huge number of travelers on a daily basis. The high number of travelers coupled with a well-planned metro network creates a platform where marketers can initiate engagement and interact with both customers and potential customers. In the current advertising model, advertising is on illuminated and framed posters in the stations and in-car, non-illuminated posters, and digital screens that show scheduled arrivals and departures of metros. Some stations have digital screens that show adverts but they do not have location capability. Most of the current advertising media have one key limitation: space. For posters whether illuminated or not, one space can host only one advert at a time. Empirical literatures show that there is room for improving this advertising model and eliminate the space limitation by replacing the poster adverts with digital advertising platform. This new model will not only be digital, but will also provide intelligent advertising platform that is driven by data. The digital platform will incorporate location sensing, e-commerce, and mobile platform to create new value to all stakeholders. Travel cards used in the metro will be registered and the card scanners will have a capability to capture traveler's data when travelers tap their cards. This data once analyzed will make it possible to identify different customer groups. Advertisers and marketers will then be able to target specific customer groups, customize adverts based on the targeted consumer group, and offer a wide variety of advertising formats. Format includes video, cinemagraphs, moving pictures, and animation. Different advert formats create different emotions in the customer's mind and the goal should be to use format or combination of formats that arouse the expected emotion and lead to an engagement. Combination of different formats will be more effective and this can only work in a digital platform. Adverts will be location based, ensuring that adverts will show more frequently when the metro is near the premises of an advertiser. The advertising platform will automatically detect the next station and screens inside the metro will prioritize adverts in the station where the metro will be stopping. In the mobile platform, customers who opt to receive notifications will receive them when they approach the business premises of advertiser. The mobile platform will have indoor navigation for the underground shopping malls that will allow customers to search for facilities within the mall, products they may want to buy as well as deals going on in the underground mall. To create an end-to-end solution, the mobile solution will have a capability to allow customers purchase products through their phones, get coupons for deals, and review products and shops where they have bought a product. The indoor navigation will host intelligent mobile-based advertisement and a recommendation system. The indoor navigation will have adverts such that when a customer is searching for information, the recommendation system shows adverts that are near the place traveler is searching or in the direction that the traveler is moving. These adverts will be linked to the e-commerce platform such that if a customer clicks on an advert, it leads them to the product description page. The whole system will have multi-language as well as text-to-speech capability such that both locals and tourists have no language barrier. The implications of implementing this model are varied including support for small and medium businesses operating in the underground malls, improved customer experience, new job opportunities, additional revenue to business model operator, and flexibility in advertising. The new value created will benefit all the stakeholders.

• Journal of the Korean Institute of Landscape Architecture
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• v.40 no.6
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• pp.161-172
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• 2012

The purpose of this study is to classify, evaluate and grade the existing highway tunnels to increase landscape and natural statistics keeping the structural safety about tunnel gates area and induce the ones that will be constructed in the future by drawing the improvements and restoring the techniques as an environment-friendly. To examine the types of tunnel gate area, total 54 tunnels were investigated by selecting Gyeongbu Expressway, Yeongdong Expressway, and Jungang Expressway. Tunnel entrances and exit ports were classified as a Wall-closed type and Protruding type, which is based on tunnel gate type. Vegetation Landscape types were classified as Multilayer-Same as the surrounding landscape_(MS), Multilayer-Difference of surrounding landscape_(MD), Single layer-Same as the surrounding landscape_(SS), Single layer-Difference of surrounding landscape_(SD), and a Desolate type which based on vegetation layers and environment-friendly. Potential vegetation recovery was identified based on the structural stability and revegetation potential of the tunnel. The factors include the structural stability of the slope height and slope gradient were selected. Revegetation potential was identified as a growth potential. This factor was used in the step to classify vegetation recovery potential of a tunnel. The result, which investigated the types of tunnel entrances and exit parts has found that the most typical in 33 places was a Wall closed type with 61.1% of the total ones. The case of vegetation landscape types was created but different from the ones surrounding it with 85.2% of the total ones. It is judged that the currently constructed vegetation of tunnel entrance and exit parts had put convenience on the safety and management before landscape consideration. In addition, tunnel entrance and exit parts with excellent potential for vegetation recovery were all Protruding type. In addition, it is judged that slope stability can easily obtain growth. Therefore, entrance and exist of the highway tunnels, which will be constructed in the future, should reflect location and the result of the natural and ecological survey in design by performing it in advance and their types, which minimize the damage area range, should be applied to the local characteristics suitably. In addition, the ecologically healthy tunnel construction should be done by introducing active vegetation recovery techniques based on its safety.

• Journal of Animal Science and Technology
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• v.47 no.4
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• pp.501-512
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• 2005

In Exp. 1, a total of forty eight multiparous sows were used in a 21-d performance assay. All litters were standardized at eleven piglets within 24h of parturition. Sows were fed one of the four experimental diets 1) CON(basal diet; Control), 2) MP1(basal diet added 0.05% of medicinal plant mixtures), 3) MP2 (basal diet added 0.1% of medicinal plant mixtures) and 4) MP3(basal diet added 0.2% of medicinal plant mixtures). Backfat thickness difference from farrowing to weaning was tended to increase in CON treatment compared to those of medicinal plants mixture(MP) treatments. However, there were not significant differences among the treatments(P>0.05). Sow’s ADFI was increased in sows fed MP2 treatment compared to MP3 treatment(P<0.05). Piglet weight gain was tended to increase in MP1 treatment compared to CON treatment(P<0.05). The glucose concentration of MP3 treatment was higher that of CON treatment(P<0.05). Exp. 2, a total of one hundred twenty weaning pigs ($L{\time}Y{\time}D$, 4.70$\pm$0.63kg average initial body weight) were used in a 20-d performance assay. Weanling pigs were fed treatments diets included 1) CON(basal diet; Control), 2) MP0.05(basal diet added 0.05% of medicinal plant mixtures), 3) MP0.1(basal diet added 0.1% of medicinal plant mixtures) and 4) MP0.15(basal diet added 0.15% of medicinal plant mixtures). Through entire experimental period, as MP increased in the diets, there was an increase in ADG(linear, P<0.067), improvement gain/feed(linear, P<0.018) and a decrease in ADFI (linear, P<0.008). DM digestibility was significantly increased with addition of MP(linear, P<0.004; quadratic, P<0.030). In conclusion, sows fed MP2 had showed less body weight loss and increased weight gain for suckling piglet. In weaning pigs, as supplementation MP from 0.05 to 0.1% in diet had improved growth performance and DM digestibility.

• Korean Journal of Poultry Science
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• v.39 no.3
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• pp.195-205
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• 2012

The objective of this study was to evaluate the effects of different levels of dietary ME on growth performance and carcass characteristics in two different strains of broiler chicken. A total of one thousand, 1-day-old A strain and R strain male chicks were randomly assigned into 8 treatments in a $2{\times}4$ factorial arrangement. They were fed iso-nitrogenic (CP 21%) crumbled diets formulated to contain metabolizable energy (ME) 2,950 to 3,250 kcal/kg in increment of 100 kcal/kg in the starter phase (1 to 21d) and iso-nitrogenic (CP 19%) pelleted diets containing same ME levels as in the finishing phase (22 to 38d). The body weight (BW) gain of chicks fed the lower ME diets (2,950 or 3,050 kcal/kg) were higher than those of the higher ME groups. The dietary energy level showed significant effects on feed intake and feed conversion rate (FCR) from 1 to 38 days of age (p<0.05). With the increment of dietary energy, feed intake tended to be reduced, whereas FCR was improved in the two strains of broiler chickens. The lowest FCR was observed at 3,250 kcal/kg diet groups in both of the two strains from 1 to 38 days of age. Feed intake and BW gain during 38 days were significantly affected by the strain factor. Increasing dietary energy up to 3,250 kcal/kg had no effect on the relative weights of breast meat and abdominal fat. The dietary energy and strains showed significant effects on the dressing percentage. There were no significant differences in various blood profiles except for GPT activity.

• Proceedings of the Korean Information Science Society Conference
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• 2006.10d
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• pp.268-273
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• 2006

차세대 무선 네트워크 (4G)는 새로운 무선 접속 기술의 개발과 함께 많은 연구가 필요한 분야이다. 그 중에서 특히 단말의 끊김없는 이동성을 제공해 주기 위한 핸드오버 기술이 가장 중요하다고 할 수 있다. 차세대 무선 네트워크는 새로운 무선 접속 기술과 함께 기존의 무선랜이나 이동통신망 등과 같이 사용될 것으로 예상되며, 네트워크 계층에서의 이동성 지원을 위하여 Mobile IPv6를 사용할 것으로 예상되는 네트워크이다. 이러한 네트워크에서 끊김없는 이동성을 제공해 주기 위해서는 현재까지 연구된 핸드오버 기능 및 구조에 대한 연구와 함께 보다 다양해진 네트워크 환경과 QoS 등을 고려한 종합적인 핸드오버 기능에 대한 연구가 필요하다. 본 논문에서는 차세대 무선 네트워크에서 단말의 끊김없는 핸드오버를 제공해 주기 위하여 필요한 기능들을 도출하고, 이들간의 유기적인 연관관계를 정의하여 다양한 네트워크 환경과 사용자의 우선순위, 어플리케이션의 QoS 요구 조건 등을 고려한 종합적인 핸드오버 기능 구조를 제안하고자 한다. 제안하는 핸드오버 구조는 Monitoring, Triggering, Handover의 세 가지 module로 나뉘어져 있으며, 각각은 필요에 따라 sub-module로 다시 세분화된다. 제안하는 핸드오버 구조의 가장 큰 특징은 핸드오버를 유발시킬 수 있는 여러 가지 요소를 종합적으로 고려하며 이들간의 수평적인 비교가 아닌 다단계 비교를 수행하여 보다 정확한 triggering이 가능하도록 한다. 또한 단말의 QoS 요구 사항을 보장하고 네트워크의 혼잡도(congestion) 및 부하 조절 (load balancing)을 위한 기능을 핸드오버 기능에 추가하여 효율적인 네트워크의 자원 사용이 가능하도록 설계하였다.서버로 분산처리하게 함으로써 성능에 대한 신뢰성을 향상 시킬 수 있는 Load Balancing System을 제안한다.할 때 가장 효과적인 라우팅 프로토콜이라고 할 수 있다.iRNA 상의 의존관계를 분석할 수 있었다.수안보 등 지역에서 나타난다 이러한 이상대 주변에는 대개 온천이 발달되어 있었거나 새로 개발되어 있는 곳이다. 온천에 이용하고 있는 시추공의 자료는 배제하였으나 온천이응으로 직접적으로 영향을 받지 않은 시추공의 자료는 사용하였다 이러한 온천 주변 지역이라 하더라도 실제는 온천의 pumping 으로 인한 대류현상으로 주변 일대의 온도를 올려놓았기 때문에 비교적 높은 지열류량 값을 보인다. 한편 한반도 남동부 일대는 이번 추가된 자료에 의해 새로운 지열류량 분포 변화가 나타났다 강원 북부 오색온천지역 부근에서 높은 지열류량 분포를 보이며 또한 우리나라 대단층 중의 하나인 양산단층과 같은 방향으로 발달한 밀양단층, 모량단층, 동래단층 등 주변부로 NNE-SSW 방향의 지열류량 이상대가 발달한다. 이것으로 볼 때 지열류량은 지질구조와 무관하지 않음을 파악할 수 있다. 특히 이러한 단층대 주변은 지열수의 순환이 깊은 심도까지 가능하므로 이러한 대류현상으로 지표부근까지 높은 지온 전달이 되어 나타나는 것으로 판단된다.의 안정된 방사성표지효율을 보였다. $^{99m}Tc$-transferrin을 이용한 감염영상을 성공적으로 얻을 수 있었으며, $^{67}Ga$-citrate 영상과 비교하여 더 빠른 시간 안에 우수한 영상을 얻을 수 있었다. 그러므로 $^{99m}Tc$-transierrin이 감염 병소의 영상진단에 사용될 수 있을 것으로 기대된다.리를 정량화 하였다. 특히 선

• Food Science of Animal Resources
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• v.25 no.1
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• pp.20-25
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• 2005

This study was conducted to evaluate the effects of Zizyphus vulgaris supplementation on growth performance, blood cortisol and meat quality characteristics in finishing pigs. The total of thirty-six [Duroc${\times}$Yorkshir${\times}$Landrace] pigs ($91{\pm}2.11$ kg average initial body weight) were used in a 30-days assay. Dietary treatments included 1) CON (basal diet), 2) T1 (basal diet for 15 days and 0.1 % Zizyphus vulgaris for 15 days) and 3) T2 (0.1 % Zizyphus vulgaris for 30 days). The ADG (Average daily gain), ADFI (Average daily feed intake) and ADG/ADFI during the feeding period were not significantly differences among the treatments (p>0.05). Backfat thickness of pigs fed CON was higher than those of T1 and T2 (p<0.05). The appearance rate of A or B carcass grade was in T1 (74%) and T2 (84%) was significantly higher than that in CON (58%) (p<0.05). Pigs fed Zizyphus vulgaris 0.1 % for 30 days tended to decrease on blood cortisol compared with pigs fed CON and T1. But, there was not significantly difference among the treatments (p>0.05). The Hunter's L/sup */ (lightness) value of loin in the pork fed CON was higher than that of loin in the pork fed T1 and T2 (p<0.05). After 7 days, the L/sup */ value of loin in the pigs fed T2 was higher increased than that of pigs fed T1 and CON (p<0.05). However, a/sup */ and b/sup */ values were not affected by dietary Zizyphus vulgaris (p>0.05). There were not found remarkable differences in sensory properties (marbling, firmness and color) among the treatments. The results from the present study suggest that Zizyphus vulgaris could be a effective feed additive to improve meat quality of pigs. However, further research is needed to investigate effects of carcass characteristics.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.2 no.1
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• pp.67-85
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• 1995

The purpose of this study was to determine the effects of rhythmic movement therapy for adaptation state in mastectomy patients. The quasi-experimental study was designed using nonequivalent control group pretest-posttest design within the framework of Laszarus & Folkman's stress-adaptation model. The subjects of the study were composed thirty-two mastectomy patients, of these fifteen were assigned to the experimental group and seventeen to the control group. Rhythmic movement therapy was carried out twice a week for thirty-five, minutes or forty minutes for six weeks period from August 22 to September 30 in 1994. Data was collected before and after the experimentation. Collected data was analyzed by mens of chi-square test, t-test, two-way ANOVA, Pearson's correlation coefficient with $SPSS/PC^+$. The results were summarized as follows : 1. Physical symptom score in the experimental group and control group was not significant difference. 2. Joint Movement Parameter in the experimental group and control group was significant difference. 3. Depression score in the experimental group and contrl group was significant difference. 4. Body image score in the experimental group and control group was significant difference. 5. Stress perception score in the experimental group and control group was significant difference. 6. Social adjustment score in the experimental group and control group was significant difference. 7. Each adaptational level in the experimental group and control group according to type of Health Locus of Control were partially significant difference. Depression score and social adjustment score between the experimental group and control group according to others Health Locus of control were significant difference. This data suggest that rhythmic movement therapy was more effective in the group of Others health Locus of Control. 8. Each adaptational level between the experimental group and control group according to amount of spouse support were not significant difference. 9. The significant positive correlation between physical symptom score and body image, between body image and social adjustment, were observed. The significant negative correlation between stress perception score and social adjustment, between depression and body image, between depression and social adjustment, were observed. This data suggest that the more physical symptom score increased, the more body image increased and the more body image, the more social adjustment. And then the more stress perception score decreased, the more social adjustment increasded and the more depression score, the more body image and social adjustment. Thus it is concluded that the rhythmic movement therapy was a useful nursing intervention for adaptation of mastectomy patients.

• Journal of Korean Home Economics Education Association
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• v.29 no.1
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• pp.125-143
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• 2017

This program aimed at preparing the pre-service teachers to teach about North Korean family life culture to secondary school students, by promoting the understanding and acceptance of cultural differences between the two Koreas. Based on the literature review, the educational contents were developed to reflect general aspects of North Korean family life. The program was implemented with 35 undergraduate students in a home economics teacher education program. The program consists of 15 units of 150-minute instructional sessions. The first three introductory sessions dealt with the definitions of family life culture and multiculturalism, as well as a historical review of South-North relationship. The following nine sessions were devoted to North Korean family life culture in five different domains: consumption and leisure, family and child-caring, food and dietary life, housing and neighborhood life, and clothing/fashion. During the final two weeks, pre-service teachers conducted mock-teaching. For evaluation, pre- and post-session scores on general teaching efficacy and understanding of cultural differences were compared using paired t-tests. The pre-/post-test results confirmed that the program was successful in promoting the understanding and acceptance of cultural differences between two Koreas of pre-service teachers.

• Journal of the Korean Institute of Educational Facilities
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• v.3 no.3
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• pp.59-70
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• 1996

장안초등학교는 한국전쟁 이후인 1955년에 개교된 초등학교이다. 처음에는 8학급의 가교사시설에 18학급으로 편성되어 초기부터 시설이 양적으로 부족하였다. 또한 이 지역의 학생수 증가로 거의 매년에 걸쳐 학급수의 증가와 교실증축이 함께 이루어 졌다. 현재 건물의 건립년도를 살펴보면 1965년 6월에 처음 신관 1층 부분이 건설되어 70년대와 80년대에 걸쳐 꾸준히 증축되어 왔으며, 대지 동측의 별관은 1993년 12월에 건설된 새건물로, 학교교사 건물이 30년된 건물과 최근의 건물이 함께 공존하고 있다. 철근콘크리트 건물이 구조적으로는 100년도 견딘다 하지만 실제로는 약 30년이면 콘크리트의 산성화가 가속화되면서 구조적으로 안전하지 못하다는 학설이 인정되어, 최근 30년이 경과된 학교 건축의 재건축이 사회적 문제로 대두되고 있다. 실제로는 25년이상 경과된 건물에서도 구조적인 하자가 발생하는 예 가 많아 교육부에서는 대체로 25년이상 경과된 건물에 대하여 재건축을 실시하고 있다. 장안초등학교는 20년에서 30년 경과된 건물이 많은 부분을 차지하는 관계로 재건축이 실시되는 예이다. 아직까지 사용이 가능하다고 판단되는 건물은 본관의 남측부분의 교사(1983년 증축)과 신관의 우측부분(1985년 9월 23일 증축)과 별관(1993년 12월 14일 신축)교사동을 들수 있다. 때문에 이 부분에 대하여 철거할 것인가 혹은 그대로 사용할 것인가에 대한 의견이 있어, 최종적으로 별관은 그대로 사용하는 것을 원칙으로 하고 본관 남측부분은 가장 마지막 건설시기에 철거하고 신관 우측부분은 규모가 작아 철거하기로 하였다. 학교건축은 다른 일반건물과는 달리 교육이라는 기능을 충분히 발휘할수 있는 공간구성이 필수적이라 할수 있다. 여기서 말하는 교육이란 예전의 주입식 교육이 아니라 21세기를 바라보는 정보화 세계화를 지향하는 교육으로 학생 개개인의 창의성과 자주성을 발휘시킬수 있는 교육이라는 점에 대하여 의견은 없을 것이다. 이러한 교육이란 다양한 교육방법을 전제로 하며 하나의 학년을 하나의 학습그룹으로 생각하는 것은 중요한 출발점이 될 것이다. 한 학년의 그룹을 교대상의 기본으로하여 이러한 그룹에 대하여 일제학습, 그룹학습, 팀티칭, 개별학습이 이루어 질수 있는 공간을 제공하는 점을 본 장안초등학교 기본계획에서 출발점으로 하였다. 물론 학교전체 학생을 콘트롤할 수 있는 교육방법도 존재한다. 선진 외국의 예를 살펴보면 아동의 능력별 교육을 위하여 무학년제(Non-Grade)를 도입하는 경우도 있지만 아직 우리나라에서는 학급단위가 중요시되고 있다. 이 학급단위는 교육단위이면서 생활지도 단위이기도 하다. 이러한 점을 인식하여 학교건축의 간장 기본 단위가 되는 보통교실 계획을 보통교실과 오픈스페이스를 연속시킨 유니트로 계획하여 일제학습, 그룹학습, 팀티칭, 개별학습 등이 이루어 질수 있도록 하였다. 실제로는 36학급을 계획할 경우, 한학년의 6개 학급이 하나의 공통된 공간내에 그룹핑 되는 것이 바람직하지만(제3안의 배치에서 제안하여 보았지만 북측교실, 오픈스페이스의 통로화등의 문제점이 있었다), 그 규모가 너무 커서 3개학급을 하나의 유니트로 하였다. 물론 한학년이 동일한 층에 배치시켜 서로의 관련성을 높게 하였다. 특별교실 계획은 보통교실과의 관련성과 장래 지역개방의 역할을 고려하여 계획하여야 할 것이다. 장안 초등학교의 경우는 별관을 그대로 사용 한다는 조건이 있기 때문에 기존의 편복도 형식의 교실에서는 보통교실 계획의 어려움이 있어 특별 교실동으로 고려하였다. 때문에 지역개방에 대해서는 문제점을 안고 있다. 체육관은 기준령에는 권장시설로 되어 있지만 학교시설에 필수적인 시설이라 생각한다. 체육은 국민건강에 직결되기 때문이다. 또한 체육관 건설은 실외체육 실내체육에 대응할 뿐 아니라 학교 행사등에 유용히 사용되기 때문에 더욱 필요시설이라 할수 있겠다. 또한 지역개방을 위하여 정문 혹은 후문 가까이에 배치시키는 것은 필수적이다. 별관, 체육관, 운동장, 후문측에 12학급용의 단독건물 등의 기본적인 제약조건을 고려하여 배치하자면 자연히 교실동들이 분산되는 결과를 낳게된다. 이러한 각각의 교사동을 A동을 중심으로 구름다리로 연결하여 동선의 불편함을 해소시켰다. 주차장은 후문 가까이에 약 10정도의 주차공간이 확보가능하다. 이외에는 운동장을 사용하는 방법과 체육관의 1층부분을 필로티로 하여 그곳에 20대 정도 주차시키는 방안이 있다. 주차는 많을수록 편리는 하겠지만 제한된 대지에 모두 만족 시켜주기는 불가능하다. 공공용의 주차와 소방에 필요한 동선이 요구된다. 특히 도심주차난을 생각할 때는 차라리 적극적으로 지하주차장을 계획하는 방안이 있을 것이다. 마지막으로 현재 67학급은 초대형 규모로 초등학교 규모로는 적합하지 못하다. 장래를 고려하여 48학급에서 최종적으로 36학급으로 계획하였으나 한동안은 67학급이 그대로 유지될 것으로 보인다. 신설 초등학교가 가까운 시기에 개교될 것을 기대한다.