Proposed Minimum Luminous Range for Existing Lighthouses in This Age of Global Navigation Satellite Systems by Using the Correlation between Light Intensity and Luminous Range

Ahmad Faizal AHMAD FUAD,Noor Apandi OSNIN,Mohd Naim FADZIL,Mohd Zamani AHMAD 국제이네비해양경제학회 2017 International Journal of e-Navigation and Maritime Vol.6 No.1

Long-range visual marine aids to navigation are not required for current marine navigational practices. Therefore, the objective of this study was to develop a minimum luminous range for major lighthouses that are still in existence to sustain the operation of the lighthouses in the future. Two steps were involved in the determination of the minimum luminous range, namely the modification of the existing geographical range formula, and the finding of a strong linear correlation between the light intensity and the luminous range with the lowest gradient possible in a graph. The application of the minimum luminous range would eliminate the loom of light beyond the geographical range of the lighthouse. This approach was applied to seven major lighthouses in Peninsular Malaysia, which resulted in a minimum luminous range of between 12 nm to 14 nm, which was a reduction from the existing range of 18 nm to 25 nm. The validation of the minimum luminous range was performed in two ways; using a Full Mission Ship Simulator (FMSS), and matching the proposed minimum luminous range with the lighting system available. The results of the validation by using the FMSS between the luminous range of 25 nm and 14 nm showed that the light could be sighted and identified at 58.7 nm and 58.6 nm, respectively, which was, therefore, not significant. The validation by matching with the lighting equipment available in the market showed that the eight-tier VLB-44, which has replaced the rotating lighting system in the US since 2008, was highly matched with the proposed minimum luminous range. This further validated the minimum luminous range. The minimum luminous range is sufficient for current navigational uses and may reduce the costs for procuring and maintaining lighting systems, and will be able to sustain the operations of lighthouses in this GNSS age.

교차로 환경에서 Range-based와 Range-free 위치측정기법을 혼합한 개선된 차량위치추적기법

박재복(Jaebok Park),고광신(Kwangshin Koh),조기환(Gihwan Cho) 大韓電子工學會 2011 電子工學會論文誌-CI (Computer and Information) Vol.48 No.2

USN(Ubiquitous Sensor Network) 환경은 언제, 어디서나 정보를 이용할 수 있게 한다. 이러한 환경의 기반이 되는 기술은 타겟의 정확한 위치설정을 전제로 한다. 특히 ITS(Intelligent Transportation Systems)는 USN 기술을 적용함으로써 쉽게 구축될 수 있다. 위치측정은 Range-based 방식과 Range-free 방식으로 나눌 수 있다. Range-based 방식은 전파의 불규칙하고 추가 장비가 필요로 센서네트워크기반 위치측정에 적합하지 않은 것으로 알려져 있다. 반면에 Range-free 방식은 능동적인 통신을 수단으로 위치를 측정하므로 자원제약적인 센서네트워크에서는 적합한 것으로 알려져 있다. 그러나 Range-free 방식은 일반적으로 정확성이 부족하며, 특히 밀집도가 낮은 환경에서는 정확성이 매우 낮다. 따라서 이 두 기법은 장단점을 가지고 있다. 그러므로 두 기법을 혼합하여 위치추적의 정확성을 개선할 수 있는 새로운 기법이 요구된다. 본 논문은 Range-free 방식을 개선할 수 있도록 추가 장비가 요구되지 않은 RSSI(Received Signal Strength Indication) 신호 값을 분류하고 주변노드의 위치와 통신범위 및 세기정보를 최대한 활용하여 이동차량을 보다 정확하게 추적할 수 있는 Range-hybrid 기반의 위치추적기법을 제시한다. 추가적으로 예측기법을 활용하여 위치추적의 정확성을 획기적으로 개선할 수 있는 방안을 제시한다. 그리고 시뮬레이션 결과, 제안된 기법이 기존 위치추적 알고리즘 보다 교통 환경에서 위치추적의 정확도가 우수함을 증명하였다. USN(Ubiquitous Sensor Network) environment permits us to access whatever information we want, whenever we want. The technologies to provide a basement to these environments premise an accurate location establishment. Especially, ITS(Intelligent Transportation Systems) is easily constructed by applying USN technology. Localization can be categorized as either Range-based or Range-free. Range-based is known to be not suitable for the localization based on sensor network, because of the irregularity of radio propagation and the additional device requirement. The other side, Range-free is much appropriated for the resource constrained sensor network because it can actively locate by means of the communication radio. But, generally the location accuracy of Range-free is low. Especially, it is very low in a low-density environment. So, these two methods have both merits and demerits. Therefore, it requires a new method to be able to improve tracking accuracy by combining the two methods. This paper proposes the tracking scheme based on range-hybrid, which can markedly enhance tracking accuracy by effectively using the information of surrounding nodes and the RSSI(Received Signal Strength Indication) that does not require additional hardware. Additionally, we present a method, which can improve the accuracy of vehicle tracking by adopting the prediction mechanism. Simulation results show that our method outperforms other methods in the transportation simulation environment.

한국군 실 사격 훈련간 효율적인 안전지대 데이터 구축 방안 연구

이준식(June-Sik Lee),최봉완(Bong-Wan Choi),오현승(Hyun-Seung Oh) 한국산업경영시스템학회 2015 한국산업경영시스템학회지 Vol.38 No.3

An effective method for produce munitions effectiveness data is to calculate weapon effectiveness indices in the US military’s Joint Munitions Effectiveness Manuals (JMEM) and take advantage of the damage evaluation model (GFSM) and weapon Effectiveness Evaluation Model (Matrix Evaluator). However, a study about the Range Safety that can be applied in the live firing exercises is very insufficient in the case of ROK military. The Range Safety program is an element of the US Army Safety Program,and is the program responsible for developing policies and guidance to ensure the safe operation of live-fire ranges. The methodology of Weapon Danger Zone (WDZ) program is based on a combination of weapon modeling/simulation data and actual impact data. Also, each WDZ incorporates a probability distribution function which provides the information necessary to perform a quantitative risk assessment to evaluate the relative risk of an identified profile. A study of method to establish for K-Range Safety data is to develop manuals (pamphlet) will be a standard to ensure the effective and safe fire training at the ROK military education and training and environmental conditions. For example, WDZs are generated with the WDZ tool as part of the RMTK(Range Managers Tool Kit) package. The WDZ tool is a Geographic Information System-based application that is available to operational planners and range safety manager of Army and Marine Corps in both desktop and web-based versions. K-Range Safety Program based on US data is reflected in the Korean terrain by operating environments and training doctrine etc, and the range safety data are made. Thus, verification process on modified variables data is required. K-Range Safety rather than being produced by a single program, is an package safety activities and measures through weapon danger zone tool, SRP (The Sustainable Range Program), manuals, doctrine, terrain, climate, military defence M&S, weapon system development/operational test evaluation and analysis to continuously improving range safety zone. Distribution of this K-range safety pamphlet is available to Army users in electronic media only and is intended for the standing army and army reserve. Also publication and distribution to authorized users for marine corps commands are indicated in the table of allowances for publications. Therefore, this study proposes an efficient K-Range Safety Manual producing to calculate the danger zones that can be applied to the ROK military’s live fire training by introducing of US Army weapons danger zone program and Range Safety Manual

약물검사에서 관리시료의 농축을 이용한 보고 가능 범위의 설정에 대한 연구

장상우 ( Sang Wu Chang ),김남용 ( Nam Yong Kim ),최호성 ( Ho Sung Choi ),박용원 ( Yong Won Park ),윤근영 ( Keun Young Yun ) 대한임상검사과학회 2004 대한임상검사과학회지(KJCLS) Vol.36 No.1

This study was designed to establish working range for reoportable range in own laboratory in order to cover the upper and lower limits of the range in test method. We experimented ten times during 10 days for setting of reportable range with between run for method evaluation. It is generally assumed that the analytical method produces a linear response and that the test results between those upper and lower limits are then reportable. CLIA recommends that laboratories verify the reportable range of all moderate and high complexity tests. The Clinical Laboratory Improvement Amendments(CLIA) and Laboratory Accreditation Program of the Korean Society for Laboratory Medicine states reportable range is only required for "modified" moderately complex tests. Linearity requirements have been eliminated from the CLIA regulations and from others accreditation agencies, many inspectors continue to feel that linearity studies are a part of good lab practice and should be encouraged. It is important to assess the useful reportable range of a laboratory method, i.e., the lowest and highest test results that are reliable and can be reported. Manufacturers make claims for the reportable range of their methods by stating the upper and lower limits of the range. Instrument manufacturers state an operating range and a reportable range. The commercial linearity material can be used to verify this range, if it adequately covers the stated linear interval. CLIA requirements for quality control, must demonstrate that, prior to reporting patient test results, it can obtain the performance specifications for accuracy, precision, and reportable range of patient test results, comparable to those established by the manufacturer. If applicable, the laboratory must also verify the reportable range of patient test results. The reportable range of patient test results is the range of test result values over which the laboratory can establish or verify the accuracy of the instrument, kit or test system measurement response.

호남지역 삼국시대의 고고학 자료를 통해 본 부뚜막신앙

노미선 전북대학교 인문학연구소 2018 건지인문학 Vol.0 No.21

This paper seeks to identify the realities of kitchen range religion that would have been relfected onto the kitchen range during the period of the Three States discovered in the Honam region. The kitchen range played an important role in indoor living as it provided heating, stored a source of fire and made cooking or lighting possible. The holy meaning attached to the kitchen range is verified through the contributions of purified water, burying of steel devices, the tunnel shaped hang-over structure and the form of portable kitchen ranges. It has also been verified that the rituals of the kitchen range were included in the rituals for burials that were seen as a rite of passage. By reviewing the archeological materials related to the kitchen range from the period of the Three States in the Honam region, the kitchen range religion was found to have been born through the related rituals associated in all stages of constructing, using and disposing of the kitchen range. During the construction stage, the Haenam Shinguem historic site shows that steel devices were buried, while for the usage stage, the kitchen range in the Gokseong Ojiri historic site shows a round clay pot estimated to be jowangjungbal. In the disposal stage, round clay pots and intentional damaging to the tunnel shaped hang-over structure within the reisdential areas were found to be proof of such rituals. Moreover, it can be estimated that kitchen range rituals have carried onto be reflected onto burial rituals through the tunnel shaped hang-over structure and portable kitchen range. However, estimating rituals that are not tangible based on archeological documents can only be vague. But since there would be resulting items of such activities, more studies will be carried out to interpret ritual activities of ancient times.

군부대 방음사격장의 음향특성 분석 및 사격소음 예측

정아영(A-Yeong Jeong),김재수(Jae-Soo Kim) 한국소음진동공학회 2014 한국소음진동공학회 논문집 Vol.24 No.11

The shooting noise caused by shooting training, which has strength and impacts, is becoming a serious damage to the residents around the shooting range and, consequently, the number of civil appeals against the shooting noise is on the constant increase. For this reason, the military examines the effects of the shooting noise at the stage of design in constructing a shooting range and tries to build a soundproof shooting range to minimize civil appeals. However, the lack of research and data concerning propagation and attenuation, both of which characterize the shooting noise from within a soundproof shooting range, even makes it so difficult to design a soundproof shooting range in constructing it. So this study used an acoustic simulation in a soundproof shooting range to identify acoustic and propagation characteristics within the shooting range and, on this basis, predicted the noise level at an exit of the soundproof shooting range. As a result, if the form and specifications of a soundproof shooting range were decided on at the stage of design, it was possible to use a simulation to design a soundproof shooting range with optimized acoustic performance and, on this basis, to predict a sound pressure level at an exit of the soundproof shooting range. On the basis of these data, it is probably possible to determine the degree of the effects of the shooting noise on the villages around a shooting range and the extent of damage to it and to minimize civil appeals against the shooting noise and resolve the issues of compensation and agreement with ease. This study is expected to provide useful data for designing and constructing a similar soundproof shooting range.

Free Range Hens Use the Range More When the Outdoor Environment Is Enriched

Nagle, T.A.D.,Glatz, P.C. Asian Australasian Association of Animal Productio 2012 Animal Bioscience Vol.25 No.4

To evaluate the role of using forage, shade and shelterbelts in attracting birds into the range, three trials were undertaken with free range layers both on a research facility and on commercial farms. Each of the trials on the free range research facility in South Australia used a total of 120 laying hens (Hyline Brown). Birds were housed in an eco-shelter which had 6 internal pens of equal size with a free range area adjoining the shelter. The on-farm trials were undertaken on commercial free range layer farms in the Darling Downs in Southeast Queensland with bird numbers on farms ranging from 2,000-6,800 hens. The first research trial examined the role of shaded areas in the range; the second trial examined the role of forage and the third trial examined the influence of shelterbelts in the range. These treatments were compared to a free range area with no enrichment. Aggressive feather pecking was only observed on a few occasions in all of the trials due to the low bird numbers housed. Enriching the free range environment attracted more birds into the range. Shaded areas were used by 18% of the hens with a tendency (p = 0.07) for more hens to be in the paddock. When forage was provided in paddocks more control birds (55%) were observed in the range in morning than in the afternoon (30%) while for the forage treatments 45% of the birds were in the range both during the morning and afternoon. When shelterbelts were provided there was a significantly (p<0.05) higher % of birds in the range (43% vs. 24%) and greater numbers of birds were observed in areas further away from the poultry house. The results from the on-farm trials mirrored the research trials. Overall 3 times more hens used the shaded areas than the non shaded areas, with slightly more using the shade in the morning than in the afternoon. As the environmental temperature increased the number of birds using the outdoor shade also increased. Overall 17 times more hens used the shelterbelt areas than the control areas, with slightly more using the shelterbelts in the afternoon than in the morning. Approximately 17 times more birds used the forage areas compared to the control area in the corresponding range. There were 8 times more birds using a hay bale enriched area compared to the area with no hay bales. The use of forage sources (including hay bales) were the most successful method on-farm to attract birds into the range followed by shelterbelts and artificial shade. Free range egg farmers are encouraged to provide pasture, shaded areas and shelterbelts to attract birds into the free range.

저밀도 USN 환경을 위한 Range-hybrid 기반의 향상된 이동객체 추적기법

박재복(Jaebok Park),조기환(Gihwan Cho) 大韓電子工學會 2010 電子工學會論文誌-CI (Computer and Information) Vol.47 No.2

위치측정은 사용자나 사물에게 주변 환경에 대한 인식을 가능케 하는 기본적인 요소이기 때문에 센서네트워크 환경에서는 가장 핵심적인 요소이다. 기존 위치측정 기법은 크게 Range-based방식과 Range-free방식으로 나눌 수 있다. Range-based방식은 전파의 불규칙하고 추가 장비가 필요한 반면에 Range-free방식은 능동적인 통신을 수단으로 위치를 측정하므로 자원제약적인 센서네트워크에서는 적합한 것으로 알려져 있다. 그러나 위치측정의 정확성이 주변노드의 수에 따라 크게 좌우된다. 특히 밀집도가 낮은 센서네트워크 환경에서는 위치측정의 정확성이 매우 낮다. 본 논문에서 제안된 DRTS(Distributed Range-hybrid Tracking Scheme)는 Range-based와 Range-free방식을 혼합하고 주변노드의 위치와 통신범위 및 세기정보를 최대한 활용하여 이동물체를 추적할 수 있는 기법을 제시한다. 특히 주변노드를 최대한 활용한 효율적인 위치측정기법과 제안된 EGP(Estimative Gird Points)의 예측기법을 활용하여 위치추적의 정확성을 획기적으로 개선할 수 있는 방안을 제시한다. 그리고 시뮬레이션 결과를 통해 기존 위치추적 알고리즘 보다 추적의 정확도 관점에서 제안된 기법의 성능이 우수함을 증명하였다. Localization is the most important feature in the sensor network environment because it is a basic element enabling people and things to aware the circumference environment. Existing localization methods can be categorized as either range-based or range-free. While range-based is known to be not suitable because of the irregularity of radio propagation and the additional device requirement. range-free is much appropriated for the resource constrained sensor network because it can actively locate by means of the communication radio. But its location accuracy is just depended on the density of circumference nodes; it is very low in low-density sensor network environment. This paper proposes a mobile object tracking method, named DRTS(Distributed Range-hybrid Tracking Scheme), with combining range-based and range-free. It is optimally making use of the location, communication range, and received signal strength from circumference nodes. Especially, it can greatly improve the mobile tracking accuracy by adapting a new prediction method, named EGP(Estimative Gird Points) into the proposed location estimation method. The simulation results show that our method outperforms the other localization and tracking methods in the tracking accuracy point of view.

동일한 Scan range의 검사에서 발생한 선량차이에 대한 연구

최성민(Seong Min Choi),김선기(Seon Ki Kim) 대한CT영상기술학회 2012 대한CT영상기술학회지 Vol.14 No.2

I. Subject Accurate Ct scan range setting is very important for decrease patient exposed dose. But when we study same scan range, the result of setting range and without setting scan range dose have difference So we want to know why difference arised. II. Meterial and Methods Materials-SOMATOM Definition AS(SIEMENS: Germany), Unfors Xi RIF & MAM detector, Unfors Xi Base unit W/mAs (Unfors: Sweden) Methods-Locate the Unfors Xi on head phantom in the middle and scan range set below 10 an. After setting scan ragne, we compared set scan range dose with without set scan range dose on same scan range. III. Result Stoped scan(none set scan range) 80, 100, 120 kVp and elf mAs 50 s CTDIvol was 0.81, 1.75, 3mGy and average absorbed dose was 1.563, 2.6o4, 4.491 respectively. Set scan range study’s absorbed dose was 1.398, 2.289, 3.932 mGy respectively. That studies proceed without AEC(auto exposure controler). On the contrary to this study apply AEC in none set scan range with 80 kVp, 20 ref. mAs, 36 elf. mAs of CTDIvol and absorbed dose was 0.6 and 0.969 mGy respectively. Also apply other valve 100 kVp, 20 ref. mAs, 25 elf. mAs and 120 kVp, 20 ref. mAs, 25 eff mAs. IV. Conclusions Even though examined the same scan range with using AEC or not, it is aware that dose that implemented as planned scan range is less than dose which implemented as suspended scan range. Therefore, to set up accurate scan range which is referred to before examination is better than halted scan which is created over range to reduce dose on pediatric or sensitive organ CT scan. 목적 CT scan 시 정확한 scan range의 절정은 환자의 피폭을 줄이는데 아주 중요하다. 그러나 동일한 scan range를 검사했더라도 계획하여 설정한 scan range로 검사된 선량과 넓은 scan range를 설정한 후 도중 중단하여 검사된 선량에 차이가 있어 이를 알아보고자 하였다. 대상 및 방법 실험 장비: SOMATOM Definition AS(SIEMENC Germany), Unfors Xi 선량 측정기 실험 방법: 두부 팬텀에 Unfors Xi 선량 측정기를 중앙에 위치시키고 scan range를 10cm 이내로 정하고 scan하던 중간에 멈추었다. 이후 scan이 멈춘 범위와 똑같은 range를 정하여 도중에 멈추지 않고 같은 image 수가 나오도록 scan하고 선량 측정기의 선량을 비교하였다. 결과 자동 노출 제어 장치(Automatic exposure control: 이하 AEC) 프로그램을 사용하지 않고 sam을 멈춘 경우 tube voltage를 각각 80, 100, 120 kVp tube current 50eff. mAs일 때 CTDIvol는 0.81mGy, 1.75mGy, 3mGy 평균 흡수선량은 1.563mGy, 2.604mGy, 4.491mGy로 측정, 동일 범위를 scan 도중 멈추지 않은 경우 평균 흡수선량에서 각각 1.398mGy, 2.289mGy, 3.932mGy로 측정되었다. AEC 프로그램을 사용한 경우 scan을 멈춘 경우 80, 100, 120 kVp 20 ref. mAs일 때 36 eff. mAs, 25 eff. mAs, 25 eff. mAs CTDIvol 0.6 mGy, 0.91 mGy, 1.54mGy, 평균 흡수선량 0.969mGy, 1.394mGy, 2.255mGy으로 나타났고, scan을 멈추지 않은 경우 80, 100, 120 kVp 20 ref, mAs일 때 29eff. mAs, 24eff. mAs, 23eff. mAs, CTDIvol 0.48mGy, 0.86mGy, 1.44mGy 평균 흡수선량 0.695mGy, 1.253mGy, 1.984mGy으로 나타났다. 결론 AEC 프로그램의 사용 여부와는 상관없이 동일한 scan range를 검사했더라도 계획하여 설정한 scan range로 검사된 선량이 넓은 scan range를 설정한 후 도중 중단하여 검사된 선량에 비하여 적은 선량으로 검사된다는 것을 알 수 있었다.

두경부 토모테라피 치료 시 CT scan range에 따른 치료계획의 정확성 평가

권동열,김진만,채문기,박태양,서성국,김종식,Kwon, Dong Yeol,Kim, Jin Man,Chae, Moon Ki,Park, Tae Yang,Seo, Sung Gook,Kim, Jong Sik 대한방사선치료학회 2019 대한방사선치료학회지 Vol.31 No.2

목 적: 두경부 토모테라피 치료 시 다양한 이유로 CT scan range가 부족한 상황이 발생한다. CT scan range는 정확한 선량 계산에 영향을 주기 때문에 Re-CT Simulation이 좋지만 환자의 피폭선량 증가와 불편함, 치료일정 변경 등 문제점을 갖는다. 이에 본 저자는 기존 CT scan range에서 Plan setup parameter 변화를 통해 Re-CT Simulation 없이 정확한 치료계획에 필요한 최소한의 CT scan range를 평가해보고자 한다. 대상 및 방법: CT simulator(Discovery CT590 RT, GE, USA)와 In House Head & Neck Phantom을 이용하였고, Target의 끝단에서 0.25~3.0cm까지 0.25cm씩 증가시켜 CT scan range 별 이미지를 획득하였다. Target과 정상 장기를 Head & Neck Phantom에 등록하고 ACCURAY Precision^® 이용하여 치료계획을 설계하였다. 처방 선량은 Daily 2.2Gy, 27 Fxs, Total Dose 59.4Gy, Target은 처방 선량의 95~107%, 정상 장기는 SMC Protocol에 맞춰 치료계획을 설계하였다. 동일한 치료계획 조건에서 Field Width(FW)와 Jaw 모드를 고려한 5가지 방법(Fixed-1cm, Fixed-2.5cm, Fixed-5cm, Dynamic-2.5cm Dynamic-5cm)과 2가지 Pitch(0.43, 0.287)의 Plan Setup parameter로 치료계획을 설계하였다. 각 치료계획에 대한 선량 전달의 정확성은 EBT3 film과 RIT(Complete Version 6.7, RIT, USA)를 이용하여 분석하였다. 결 과: Target의 처방 선량과 정상 장기의 견딤선량(Tolerance dose)을 만족한 치료계획(SMC Protocol)은 Fixed-1cm은 0.25cm 이상, Fixed-2.5cm는 0.75cm 이상, Dynamic-2.5cm는 1cm 이상, Fixed-5cm과 Dynamic-5cm인 경우는 1.75cm 이상의 Scan range가 있어야 정확한 치료계획을 할 수 있었다. 선량 전달의 정확성은 RIT로 분석한 결과 SMC Protocol을 만족한 치료계획에서 3% 미만의 오차였다. 결 론: 두경부 토모테라피 치료 시 CT scan range가 부족한 경우 Plan Setup Parameter 중 Field Width(FW)를 조절하여 정확한 치료계획을 설계할 수 있었다. 이에 본 저자가 추천한 Plan Setup Parameter를 CT scan range에 따라 적용하고 Re-CT 여부를 판단한다면 업무의 효율성 및 환자의 피폭선량을 감소시킬 수 있을 것으로 사료된다. Purpose: CT scan range is insufficient for various reasons in head and neck Tomotherapy^®. To solve that problem, Re-CT simulation is good because CT scan range affects accurate dose calculations, but there are problems such as increased exposure dose, inconvenience, and a change in treatment schedule. We would like to evaluate the minimum CT scan range required by changing the plan setup parameter of the existing CT scan range. Materials and methods: CT Simulator(Discovery CT590 RT, GE, USA) and In House Head & Neck Phantom are used, CT image was acquired by increasing the image range from 0.25cm to 3.0cm at the end of the target. The target and normal organs were registered in the Head & Neck Phantom and the treatment plan was designed using ACCURAY Precision^®. Prescription doses are Daily 2.2Gy, 27 Fxs, Total Dose 59.4Gy. Target is designed to 95%~107% of prescription dose and normal organ dose is designed according to SMC Protocol. Under the same treatment plan conditions, Treatment plans were designed by using five methods(Fixed-1cm, Fixed-2.5cm, Fixed-5cm, Dynamic-2.5cm Dynamic-5cm) and two pitches(0.43, 0.287). The accuracy of dose delivery for each treatment plan was analyzed by using EBT3 film and RIT(Complete Version 6.7, RIT, USA). Results: The accurate treatment plan that satisfying the prescribed dose of Target and the tolerance dose in normal organs(SMC Protocol) require scan range of at least 0.25cm for Fixed-1cm, 0.75cm for Fixed-2.5cm, 1cm for Dynamic-2.5cm, and 1.75cm for Fixed-5cm and Dynamic-5cm. As a result of AnalysisAnalysis by RIT. The accuracy of dose delivery was less than 3% error in the treatment plan that satisfied the SMC Protocol. Conclusion: In case of insufficient CT scan range in head and neck Tomotherapy^®, It was possible to make an accurate treatment plan by adjusting the FW among the setup parameter. If the parameter recommended by this author is applied according to CT scan range and is decide whether to re-CT or not, the efficiency of the task and the exposure dose of the patient are reduced.