To solve the pathological problems of the musculoskeletal system based on evidence, a sophisticated analysis of human motion is required. Traditional optical motion capture systems with high validity and reliability have been utilized in clinical practice for a long time. However, expensive equipment and professional technicians are required to construct optical motion capture systems, hence they are used at a limited capacity in clinical settings despite their advantages. The development of information technology has overcome the existing limit and paved the way for constructing a motion capture system that can be operated at a low cost. Recently, with the development of computer vision-based technology and optical markerless tracking technology, webcam-based 3D human motion analysis has become possible, in which the intuitive interface increases the user-friendliness to non-specialists. In addition, unlike conventional optical motion capture, with this approach, it is possible to analyze motions of multiple people at simultaneously. In a non-optical motion capture system, an inertial measurement unit is typically used, which is not significantly different from a conventional optical motion capture system in terms of its validity and reliability. With the development of markerless technology and advent of non-optical motion capture systems, it is a great advantage that human motion analysis is no longer limited to laboratories.

In this experiment, the error according to the measurement method was analyzed for the length, angle, radius of curvature, and diameter of the measurement system analysis using a profile projector device used in the field. One-way analysis was performed on each data tested 30 times using a statistical technique. Through the experiment, it was found that an error occurred in each data when measuring the angle according to the measurement method, and the null hypothesis that no error occurred when measuring the length, inside dia and radius was established.

Breakthrough analysis has widely been explored for the dynamic separation of gaseous mixtures in porous materials. In general, breakthrough experiments measure the components of a flowing gas when a gaseous mixture is injected into a column filled with an adsorbent material. In this paper, we report on the design and fabrication of a breakthrough curve measurement device to study the dynamic adsorptive separation of hydrogen isotopologues in porous materials. Using the designed system, an experiment was conducted involving a 1:1 mixture of hydrogen and deuterium passed through a column filled with zeolite 13X (1 g). At room temperature, both hydrogen and deuterium were adsorbed in negligible amounts; however, at a temperature of 77 K, deuterium was preferentially adsorbed over hydrogen. The selectivity was different from that in the existing literature due to the different sample shapes, measurement methods, and column structures, but was at a similar level to that of cryogenic distillation (1.5).

This study proposes a low-cycle fatigue life derived from measurement points on pipe elbows, which are components that are vulnerable to seismic load in the interface piping systems of nuclear power plants that use seismic isolation systems. In order to quantitatively define limit states regarding leakage, i.e., actual failure caused by low-cycle fatigue, in-plane cyclic loading tests were performed using a sine wave of constant amplitude. The test specimens consisted of SCH40 6-inch carbon steel pipe elbows and straight pipes, and an image processing method was used to measure the nonlinear behavior of the test specimens. The leakage lines caused by low-cycle fatigue and the low-cycle fatigue curves were compared and analyzed using the relationship between the relative deformation angles, which were measured based on each of the measurement points on the straight pipe, and the moment, which was measured at the center of the pipe elbow. Damage indices based on the combination of ductility and dissipation energy at each measurement point were used to quantitatively express the time at which leakage occurs due to through-wall cracking in the pipe elbow.

Aluminum nitride having a dense hexagonal structure is used as a high-temperature material because of its excellent heat resistance and high mechanical strength; its excellent piezoelectric properties are also attracting attention. The structure and residual stress of AlN thin films formed on glass substrate using TFT sputtering system are examined by XRD. The deposition conditions are nitrogen gas pressures of 1 × 102, 6 × 103, and 3 × 103, substrate temperature of 523 K, and sputtering time of 120 min. The structure of the AlN thin film is columnar, having a c-axis, i.e., a <00·1> orientation, which is the normal direction of the glass substrate. An X-ray stress measurement method for crystalline thin films with orientation properties such as columnar structure is proposed and applied to the residual stress measurement of AlN thin films with orientation <00·1>. Strength of diffraction lines other than 00·2 diffraction is very weak. As a result of stress measurement using AlN powder sample as a comparative standard sample, tensile residual stress is obtained when the nitrogen gas pressure is low, but the gas pressure increases as the residual stress is shifts toward compression. At low gas pressure, the unit cell expands due to the incorporation of excess nitrogen atoms.

The electrochemical type gas sensor has the advantage of being easy to use due its small size, and it is also relatively inexpensive. However, its output can easily vary depending on temperature and humidity conditions. Therefore, it is important to ascertain the exact output characteristics of a sensor according to the measuring environment in order to improve measurement accuracy for any set of given conditions. The purpose of this study is to obtain basic information about the output characteristics of a sensor that is used both indoor and outdoor according to the variation in temperature and humidity conditions in order to improve the accuracy of the sensor. To achieve this result, a calibration curve was made using ammonia standard gas and the calibration factor was calculated using the calibration curve and the measuring accuracy was confirmed with regard to the ammonia sensor. Based on the test results, the variation of the sensor output value was large in relation to temperature and humidity variation. It was found that the output value from the sensor at higher temperature and humidity conditions was also higher. However, the measuring accuracy of the sensor could be improved by more than 10% by applying the calibration factor and an average accuracy of more than 97% could be achieved. It is anticipated that the result of this study can be used as basic data to obtain more accurate results using electrochemical sensors for a given set of temperature and humidity conditions, and therefore, it can also be considered that the reliability and applicability of electrochemical sensors can be improved.

The purpose of this study is to analyze the effect of temperature and humidity on the measured Particulate Matter (PM) concentrations recorded by PMS5003T, a low-cost light scattering type measuring tool. A regression analysis was performed on the ratio of PM concentrations measured by the light scattering method and the beta-ray absorption method according to temperature and humidity in an outdoor environment. As the temperature decreased, the PM concentration ratio increased, and this tendency intensified below 0oC. As the humidity increased, the PM concentration ratio increased, but the effect was less than the temperature effect. The coefficients of determination for temperature and humidity were R2 = 0.325 and 0.003, respectively, and the effects of temperature and humidity on the measured values w ere formulated and compensated for. As a result of the compensation, R2, relative precision, accuracy and RMSE improved from 0.927 to 0.958, from 91.183% to 96.651%, from 31.383% to 74.058%, and from 13.517 μg/m³ to 6.690 μg/m³, respectively. Finally, results from this study indicate that the reliability of the low-cost light scattering type PM sensor can be improved by applying the temperature and humidity compensation method.

본 연구에서는 균일도 보정기법이 적용된 영상의 신호강도 측정 시 적용된 보정기법을 측정할 수 없는 ImageJ 프로그램 의 문제점을 알아보고자 하였다. 연구방법은, 균일도를 보정하지 않은 영상과 보정한 영상을 각각 획득한 후 적용된 보정기 법을 측정할 수 있는 전용 영상측정 프로그램과 측정할 수 없는 ImageJ 프로그램으로 신호강도를 측정하여 비교 평가하였다. 연구결과, 전용 영상측정 프로그램은 균일도를 보정한 영상과 보정하지 않은 영상 모두 유의한 차이가 있었으나, ImageJ 프로그램은 균일도를 보정한 영상과 보정하지 않은 영상 모두 유의한 차이가 없었다. 결론적으로 균일도를 보정한 영상의 신호강도 측정 시 적용된 보정기법을 측정할 수 없는 ImageJ 프로그램은 부정확한 신호강도 값이 산출되기 때문에 매우 주의를 해야 한다.

기능성 게임은 현재 치료, 의학 관련 검사, 인지발달, 특수훈련 및 교육콘텐츠로서 많은 분야에 적용되고 있 다. 아동을 위해서도 주의, 작업기억, 공간인지 및 협응 능력 등 다양한 인지 및 인지 신경검사와 이런 인지 기능들의 증진을 위해 개발되고 있다. 하지만 놀이의 중요한 기능 중 정서적인 부분이 차지하는 것에 비해 기능성 게임이 보여준 역할은 매우 부족하며 아직 기초적 연구 단계에 머물러 있다. 컴퓨터 게임을 통한 정 서적 상호작용의 학습에 대한 연구와 도전이 시급하다. 본 연구에서는 아동의 정서 지능 측정을 위한 기능성 게임 개발을 목표에 두고 정서지능의 요소 중 하나인 타인의 정서 인식능력을 측정하는 게임을 개발하고자 하였다. 정서적 지능의 기초 요소인 정서인식이 기능성 게임으로 측정되고 나아가 향상될 수 있다면 아동의 정서지능을 위한 기능성 게임에 대한 새로운 가능성들을 여는 계기가 될 것이다. 실험 결과 개발된 정서지능 측정용 기능성 게임의 점수는 정서지능의 하위 요소인 정서인식, 감정이입, 정서활용과 통계적으로 유의미한 정적 상관관계를 나타내었으며, 인지적 처리와 비교적 관련이 많은 사고촉진과 정서통제 요인과는 상관을 보 이지 않았다. 이는 얼굴의 표정을 이용하여 긍정적인 자극에 대한 초등학생들의 정서적 반응을 이끌어내고 이를 게임의 점수로 환산하는 것으로서의 가능성을 잘 보여준다고 볼 수 있다.

With the advancement of industrialization, modern industry had sophisticated technology, and manufacturers also demanded high-precision measurement accuracy. Improving the quality level by increasing the reliability of measurement results as well as accurate measurement is a key issue to increase the competitiveness of today's manufacturing industry. In general, measurement results depend on tolerances in the industrial field, and it may be difficult to guarantee the reliability of the data in the case of an industry that deals with precision parts. Currently, measurement uncertainty is mainly applied to the calibration and test fields of instruments. This study is aim to apply measurement uncertainty as a way to improve the accurate analysis and reliability of measurement results in the industrial field. For this, precision parts connected by shaft and hole were selected among geometric elements, and roundness and cylindricity were measured using a roundness measuring instrument and CMM. And, taking into account the environment in which these measurements were made, factors affecting the measurement results were derived, and a mathematical model was established to calculate the measurement uncertainty. Applying uncertainty in the field in this way is expected to improve the level of quality and accurate analysis of measurement results.

본 연구는 무인기를 이용한 동계사료의 수량조사시 필요한 검량식의 작성을 위한 식생조사 및 분광측정의 적정 시기와, 작성된 검량식의 적용이 적절한 시기를 판단하기 위하여 고정식 자동 분광 측정장치를 개발하여 호밀, 총체보리, IRG를 대상으로 NDVI 를 장기간 측정하였다. 그리고 NDVI가 최댓값이 되는 날을 기준 으로 증가기간과 감소시간으로 기간을 나누어 건물수량 예측을 위한 검량식을 작성하고 검량식의 예측정확도를 각각 비교하였다. 조사결과 호밀, 총체보리, IRG는 각각 4월 8일, 4월 9일, 4월 5일에 NDVI가 최대치가 되었으며 NDVI 증가기간의 검량식은 결정계수(R2)는 각각 0.84, 0.84, 0.78로 높은 상관관계를 보였고 NDVI 감소기간에는 각각 0.00, 0.02, 0.27로 매우 낮게 나타났다. 따라서 NDVI 측정을 통한 건물수량 예측을 효율적으로 하기 위해서는 NDVI 변화를 정확히 측정할 필요가 있으며 고정식 자동 분광 측정 방법은 생육에 따른 NDVI의 정밀 측정에 효과적인 것으로 판단된다.

PURPOSES : The purpose of this study is to suggest a thermal expansion coefficient measurement method using an embedded strain transducer (EST) and vibrating wire gauge (VWG), as well as to evaluate the reliability of the proposed methods by comparing them with the AASHTO T 336-10 standard method. METHODS : To apply the AASHTO 336-10 test method, which is the criterion for reliability evaluation, a reference specimen using stainless steel (sus304) is manufactured, and a thermal expansion coefficient of 17.308με/°C is obtained based on ISO regulations. Using the reference specimen, the correction factor of the thermal expansion coefficient measurement equipment is measured to be 2.93με/°C, and using this value, the thermal expansion coefficient of the mortar specimen containing the embedded gauges is measured accurately. The reliability of the proposed experimental method is evaluated by measuring the thermal expansion coefficient of the embedded gauge with temperature compensation and then comparing it with that of the reference specimen. RESULTS : The coefficient of thermal expansion of the mortar specimen is measured to be 12.423με/°C based on AASHTO 336-10, 11.963με/°C using the EST method, and 12.522με/°C using the VWG method. Based on the results obtained using the AASHTO method, the embedded gauges show a difference of 1%~3% in terms of the average results, as well as a difference in the standard deviation of 0.059~0.186. Therefore, our level of confidence in the thermal expansion coefficient experiment using the embedded gauges is high. CONCLUSIONS : When using the AASHTO 336-10 test method, the thermal expansion coefficient should be obtained by measuring the length change of the specimen; however, some engineering judgment of the experimenter is required when the measurement values fluctuate during the temperature stabilization period. In the thermal expansion coefficient test using embedded gauges (EST and VWG), temperature compensation must be performed. Furthermore, it is assumed that the temperature difference between the water tank and test specimen does not significantly affect the thermal expansion coefficient measurement because the important point is not the actual temperature value but the temperature gradient. For reliability evaluation, a statistical significance review of the strain distribution by measurement method is performed via a T-test comparing with the AASHTO test result (12.423με/°C) and the reliability level for each measurement method remains confidential.

본 연구는 최근 기업 조직 내 급속도로 유입되고 있으며, 기업 경영 전면에 부각되고 있는 밀레니얼 세대 구성원들의 특성이 반영된 팔로워십 역량 측정도구를 개발하고 타당화하는데 있다. 이를 위해 선행 연구에서 제시된 국내 대기업 밀레니얼 세대 팔로워십 역량 모형을 바탕으로 후속 연구를 진행하여 타당성이 확보된 측정도구를 개발하였다. 연구 절차는 DeVellis의 척도 개발 절차를 적용하여 예비문항 개발 및 검증, 측정도구 검증 단계를 거쳐 타당성을 확보하였다. 주요 연구결과는 다음과 같다. 첫째, 선행연구에서 제시된 3대 영역, 14개의 팔로워십 역량 구성요인의 측정도구로 사용할 예비문항을 개발하여 검증한 결과 59개 문항으로 구성되었다. 둘째, 측정도구 타당성 확보를 위해 탐색적 요인분석과 확인적 요인분석을 실시한 결과 요인적재량 기준에 미치지 못한 문항이 삭제되었고, 유사한 개념끼리 통합되어 3대 영역, 10개의 팔로워십 역량 요인, 44개 측정 문항으로 구성되었다. 이후 공인타당성, 측정동일성 검증, 동일방 법편의 검증의 과정을 거쳐 최종 확정된 밀레니얼 세대 팔로워십 역량 측정도구는 개인영역은 학습민첩성, 자기성찰 등 24문항, 관계영역은 공감, 협력 등 13문항, 조직영역은 조직목표추구, 변화감지 등 8문항으로 총 44개 문항으로 구성되었다. 본 연구는 기존 국내 팔로워십 역량 연구에서 다루지 못한 세대의 특성을 반영한 팔로워십 역량 측정도구를 타당화하였다는 점에서 학문적 의의가 있으며, HRD 현장에 밀레니얼 세대의 팔로워십 역량을 측정하고 그 결과를 바탕으로 인적자원을 활용하는데 지원할 수 있다는 점에서 실천적 의의가 있다.