• 지능정보연구
• /
• 제25권2호
• /
• pp.1-23
• /
• 2019

소비자의 니즈가 다양해지면서 데이터 마이닝과 고도화된 고객관계관리(CRM) 기법을 활용한 체계적인 마케팅 서비스를 제공하는 기업이 증가하고 있으며, KB국민카드는 고객의 결제 데이터 등을 활용하여 고객 개개인의 니즈를 충족시키고 소비자의 평생가치를 극대화하기 위한 전략을 강조하고 있다. 실시간으로 고객의 카드이용과 고객 행동, 위치 정보 등을 감지하여 진행하는 고효율 마케팅 운영시스템인 스마트 오퍼링 시스템을 운영하고 있으며, 다양한 앱 등과 결합하여 더욱 정교화된 서비스를 제공하고 있다. KB국민카드는 스마트 오퍼링 시스템의 성공과 지속적인 성장을 위해 고도화되고 있는 ICT 기술과 인재 확보를 위한 투자를 진행해야 하며, 장기적인 관점에서의 수익확보를 위한 전략을 확립하여 체계적인 진행이 필요하다. 특히, 프라이버시 침해와 개인정보 유출 등의 문제가 쟁점이 되는 현재 상황에서 고객 정보를 활용한 마케팅에 대한 고객의 인식을 긍정적으로 유도하고, 보안성을 강조하는 기업 이미지 형성을 위한 노력이 필요하다. 본 연구는 CRM 전략의 변화 과정을 통해 현재 카드사의 실시간 CRM 전략을 KB 국민카드의 빅데이터 활용전략과 마케팅 활동을 통해 확인하고자 한다.

• 서비스연구
• /
• 제13권1호
• /
• pp.48-62
• /
• 2023

최근 K-POP 열풍에서 볼 수 있듯이 한국 음악 산업의 규모와 영향력은 더욱더 커지고 있다. 한국의 음원 시장에는 1년에 최소 6천 개의 음원이 공개되고 있지만 흥행했다고 말할 수 있는 음원은 많지 않다. 이에 흥행작을 만드는 요인이 무엇인지 밝히기 위한 많은 연구 및 시도가 이루어지고 있다. 음악의 상업적인 성공에는 음악의 질뿐만 아니라 미디어 노출이나 홍보와 같은 상업적인 요소 또한 중요한 역할을 담당한다. 최근 대중음악 산업에서는 인터넷 밈을 활용한 마케팅이 많이 나타나는데, 인터넷 밈이란 사람들 사이에서 확산되는 문화적 단위로 이미지나 동영상 등 다양한 형태로 확산되는 활동이나 트렌드라고 할 수 있다. 인터넷 환경과 디지털 커뮤니케이션 특성에 따라 다양한 밈의 형태로 콘텐츠들이 확대 재생산되고 있으며, 이는 소비자들에게 더 큰 반응을 일으킨다. 기존에 인터넷 밈현상은 자연적으로 발생해왔으나, 최근 마케팅 효과를 인지한 아티스트 측에서 마케팅의 요소로 활용하고 있다. 본 논문에서는 대중음악의 흥행 요인과 흥행의 관계에서 인터넷 밈의 매개효과를 분석하고, 이를 반영한 예측모델을 제안하였다. 분석 결과, '커버효과'와 '챌린지효과'의 매개효과가 있는 요인은 동일하게 나타났다. 내부 흥행요인 중에서는 '가수의 인지도', 'POP, 댄스, 발라드, 성인가요, 일렉트로니카' 장르에서 매개효과가 존재하였으며, 외부 흥행 요인 중에서는 '기획사 역량','음악 방송 프로그램 출연 횟수', '뉴스 기사 수'에서 매개효과가 나타났다. 커버효과와 챌린지효과를 반영한 예측 모형은 각각 F1-score가 0.6889, 0.7692로 나타났다. 본 연구는 실제 차트 데이터를 수집·분석하여 실무적으로 활용 가능한 상업적인 방향성을 제시하였으며, 대중음악의 여러 흥행 요인과 인터넷 밈의 매개효과가 존재한다는 것을 발견하였다는 점에서 의의를 갖는다.

• 대한의용생체공학회:의공학회지
• /
• 제6권2호
• /
• pp.1-8
• /
• 1985

The wall shear stress in the vicinity of end-to end anastomoses under steady flow conditions was measured using a flush-mounted hot-film anemometer(FMHFA) probe. The experimental measurements were in good agreement with numerical results except in flow with low Reynolds numbers. The wall shear stress increased proximal to the anastomosis in flow from the Penrose tubing (simulating an artery) to the PTFE: graft. In flow from the PTFE graft to the Penrose tubing, low wall shear stress was observed distal to the anastomosis. Abnormal distributions of wall shear stress in the vicinity of the anastomosis, resulting from the compliance mismatch between the graft and the host artery, might be an important factor of ANFH formation and the graft failure. The present study suggests a correlation between regions of the low wall shear stress and the development of anastomotic neointimal fibrous hyperplasia(ANPH) in end-to-end anastomoses. 30523 T00401030523 ^x Air pressure decay(APD) rate and ultrafiltration rate(UFR) tests were performed on new and saline rinsed dialyzers as well as those roused in patients several times. C-DAK 4000 (Cordis Dow) and CF IS-11 (Baxter Travenol) reused dialyzers obtained from the dialysis clinic were used in the present study. The new dialyzers exhibited a relatively flat APD, whereas saline rinsed and reused dialyzers showed considerable amount of decay. C-DAH dialyzers had a larger APD(11.70$\pm$1.32mmHg/min)compared to CF dialyzers(4.32$\pm$0.55mmHg/min)(p<0.05). However, there was no observable difference in the UFR between the two dialyzers. Neither APD nor UFR showed any significant increase with an increasing number of reuses for up to more than 20reuses. A substantial number of failures observed in APD(larger than 20mmHe/min)on the reused dialyzers(2 out of 40 CP and S out 26 C-DAK) were attributed to the Possible damage on the fibers. The CF 15-11 HFDs which failed APD test did not show changes in the UFR compared to normal dialyzers indicating that APD is a more sensitive test than UFR test to evaluate the integrity of the fibers. 30527 T00401030527 ^x For quantitative measurement of reflected light from a clinical diagnostic strip, a prototype old reflectance photometer was designed. The strip loader and cassette were made to obtain more accurate reflectance parameters. The strip was illuminated at 45˚c through optical fiber and the intensity of reflected light was determined at rectanguLat angle using a photodiode. The kubelka-munk coefficient and reflection optical density were determined ar four different wavelengths(500, 550, 570 and 610nm) for blood glucose strip. For higher concentration than 300mg/41 about glucose, a saturation state of abforbance was observed at 500, 550 and 570nm. The correlation between glucose concentration and parameters was the best at 610nm. 30535 T00401030535 ^x Radiation-induced fibrosarcoma tumors were grown on the flanks of C3H mice. The mice were divided into two groups. One group was injected with Photofrin II, intravenously (2.5mg/kg body weight). The other group received no Photofrin II. Mice from both groups were irradialed for approximately 15 minutes at 100, 300, or 500 mW/cm2 with the argon (488nm/514.5 nm), dye(628nm) and gold vapor (pulsed 628 nm) laser light. A photosensitizer behaved as an added absorber. Under our experimental conditions, the presence of Photolfrin II increased surface temperature by at least 40% and the temperature rise due to 300 mW/cm2 irradiation exceeded values for hyperthermia. Light and temperature distributions with depth were estimated by a computer model. The model demonstrated the influence of wavelength on the thermal process and proved to be a valuable tool to investigate internal temperature rise. 30536 T00401030536 ^x We investigated the structural geometry of thirty-eight Korean femurs. The purpose of this study is to identify major geometrical differences between Korean femurs 3nd others that we believe belong to Caucasians so that we would be able to get insights into the femoral component design that fits Asians including Koreans. We utilized computerized tomography (CT) images of femurs extracted from cadavers. The CT images were transformed into bitmap data by using a film scanner, and then analyzed by using a commercially available software called Image v.1.0 and a Macintosh IIci computer.The resulting data were compared with already published data. The major results show that the geometry of the Korean femurs is significantly different from that of Caucasians: (1) the anteversion angle and the canal flare index are greater by the amount of approximately 8˚ and 0.5, respectively, (2) the shape of the isthmus cross section is more round, and (3) the distance between the teaser trochanter and the proximal border of the isthmus is shelter by about 15 mm. The results suggested that the femoral component suitable for Asians should be different from the currently-used components designed and manufactured mostly by European or American companies. 30537 T00401030537 ^x It is well known that nonlinear propagation characteristics of the wave in the tissue may give very useful information for the medical diagnoisis. In this paper, a new method to detect nonlinear propagation characteristics of the internal vibration in the tissue for the low frequency mechanical vibration by using bispectral analysis is proposed. In the method, low frequency vibration of f0( = 100Hz) is applied on the surface of the object, and the waveform of the internal vibration x (t) is measured from Doppler frequency modulation of silmultaneously transmitted probing ultrasonic waves. Then, the bispectra of the signal x (t) at the frequencies (f0, f0) and (f0, 2f0) are calculated to estimate the nonlinear propagation characteristics as their magnitude ratio, w here since bispectrum is free from the gaussian additive noise we can get the value with high S/N. Basic experimental system is constructed by using 3.0 MHz probing ultrasonic waves and the several experiments are carried out for some phantoms. Results show the superiority of the proposed method to the conventional method using power spectrum and also its usefulness for the tissue characterization. 30541 T00401030541 ^x This paper describes the implementation of a computerized radial pulse diagnosis by aids of a clinical expert. On this base, we composed of the radial pulse diagnosis system in korean traditional medicine. The system composed of a radial pulse wave detection system and a radial pulse diagnosis system. With a detection system, we detected Inyoung and Cheongu radial pulse wave and processed it. Then, we have got the characteristic parameters of radial pulse wave and also quantified that according to the method of Inyoung-Cheongu Comparison Radial Pulse Diagnosis. We defined the jugement standard of radial pulse diagnosis system and then we confirmed the possibility for realization of automatic radial pulse diagnosis in korean traditional medicine. 30545 T00401030545 ^x Microspheres are expected to be applied to biomedical areas such as solid-phase immunoassays, drug delivery systems, immunomagnetic cell separation. To synthesize microspheres for biomedical application, "two stage shot growth method" was developed. The uniformity ratio of synthesized microspheres was always smaller than 1.05. And the surface charge density (or the number of ionizable functional groups) of the microspheres synthesized by "two stage shot growth method" was 6~13 times higher than that of the microspheres synthesized by conventional seeded batch copolymerization. As a previous step for biomedical application, adsorption experiments of bovine albumin on microspheres were carried out under various conditions. The maximum adsorbed amount was obtained in the neighborhood of pH 4.5. Isoelectric point of bovine albumin is pH 5.0, so experimental result shows that it shifted to acid area. The adsorption isotherm was obtained, the plateau region was always reached at 2.Og/L (bulk concentration of bovine albumin).The effect of the kind and the amount of surface functional group was also examined. 30575 T00401030575 ^x A medical image workstation was developed using multimedia technique. The system based on PC-486DX was designed to acquire medical images produced by medical imaging instruments and related audio information, that is, doctors' reporting results. Input information was processed and analyzed, then the results were presented in the form of graph and animation. All the informations of the system were hierarchically related with the image as the apex. Processing and analysis algorithms were implemented so that the diagnostic accuracy could be improved. The diagnosed information can be transferred for patient diagnosis through LAN(local area network). 30592 T00401030592 ^x In the conventional infrared imaging system, complex infrared lens systems are usually used for directing collimated narrow infrared beams into the high speed 2-dimensional optic scanner. In this paper, a simple reflective infrared optic system with a 2-dimensional optic scanner is proposed for the realization of medical infrared thermography system. It has been experimentally proven that the intfrared thermography system composed of the proposed optic system has the temperature resolution of 0.1˚c under the spatial resolution of lmrad, the image matrix size of 256 X 240, and tile imaging time of 4 seconds. 30593 T00401030593 ^x In this paper, MIIS (Medical Image Information System) has been designed and implemented using INGRES RDBMS, which is based on a client/server architecture. The implemented system allows users to register and retrieve patient information, medical images and diagnostic reports. It also provides the function to display these information on workstation windows simultaneously by using the designed menu-driven graphic user interface. The medical image compression/decompression techniques are implemented and integrated into the medical image database system for the efficient data storage and the fast access through the network. 30594 T00401030594 ^x In this paper, computerized BEAM was implemented for the space domain analysis of EEG. Trans-formation from temporal summation to two-dimensional mappings is formed by 4 nearest point inter-polaton method. Methods of representation of BEAM are two. One is dot density method which classify brain electrical potential 9 levels by dot density of gray levels and the other is colour method which classify brain electrical 12 levels by red-green colours. In this BEAM, instantaneous change and average energy distribution over any arbitrary time interval of brain electrical activity could be observed and analyzed easily. In the frequency domain, the distribution of energy spectrum of a special band can easily be distinguished normality and abnormality. 30608 T00401030608 ^x Laboratory information system (LIS) is a key tool to manage laboratory data in clinical pathology. Our department has developed an information system for routine hematology using down-sized computer system. We have used an IBM 486 compatible PC with 16MB main memory, 210 MB hard disk drive, 9 RS-232C port and 24 pin dot printer. The operating system and database management system were SCO UNIX and SCO foxbase, respectively. For program development, we used Xbase language provided by SCO foxbase. The C language was used for interface purpose. To make the system use friendly, pull-down menu was used. The system connected to our hospital information system via application program interface (API), so the information related to patient and request details is automatically transmitted to our computer. Our system interfaced with fwd complete blood count analyzers(Sysmex NE-8000 and Coulter STKS) for unidirectional data tansmission from analyzer to computer. The authors suggests that this system based on down-sized computer could provide a progressive approach to total LIS based on local area network, and the implemented system could serve as a model for other hospital's LIS for routine hematology. 30609 T00401030609 ^x To develop an artificial bone substitute that is gradually degraded and replaced by the regenerated natural bone, the authors designed a composite that is consisted of calcium phosphate and collagen. To use as the structural matrix of the composite, collagen was purified from human umbilical cord. The obtained collagen was treated by pepsin to remove telopeptides, and finally, the immune-free atelocollagen was produced: The cross linked atelocollagen was highly resistant to the collagenase induced collagenolysis. The cross linked collagen demonstrated an improved tensile strength. 30618 T00401030618 ^x This paper is a study on the design of adptive filter for QRS complex detection. We propose a simple adaptive algorithm to increase capability of noise cancelation in QRS complex detection with two stage adaptive filter. At the first stage, background noise is removed and at the next stage, only spectrum of QRS complex components is passed. Two adaptive filters can afford to keep track of the changes of both noise and QRS complex. Each adaptive filter consists of prediction error filter and FIR filter The impulse response of FIR filter uses coefficients of prediction error filter. The detection rates for 105 and 108 of MIT/BIH data base were 99.3% and 97.4% respectively. 30619 T00401030619 ^x To develop an artificial bone substitute that is gradually degraded and replaced by the regenerated natural bone, the authors designed and produced a composite that is consisted of calcium phosphate and collagen. Human umbilical cord origin pepsin treated type I atelocollagen was used as the structural matrix, by which sintered or non-sintered carbonate apatite was encapsulated to form an inorganic-organic composite. With cross linking atelocollagen by UV ray irradiation, the resistance to both compressive and tensile strength was increased. Collagen degradation by the collagenase induced collagenolysis was also decreased. 30620 T00401030620 ^x We have developed a monoleaflet polymer valve as an inexpensive and viable alternative, especially for short-term use in the ventricular assist device or total artificial heart. The frame and leaflet of the polymer valve were made from polyurethane, To evaluate the hemodynamic performance of the polymer valve a comparative study of flow dynamics past a polymer valve and a St. Jude Medical prosthetic valve under physiological pulsatile flow conditions in vitro was made. Comparisons between the valves were made on the transvalvular pressure drop, regurgitation volume and maximum valve opening area. The polymer valve showed smaller regurgitation volume and transvalvular pressure drop compared to the mechanical valve at higher heart rate. The results showed that the functional characteristics of the polymer valve compared favorably with those of the mechanical valve at higher heart rate. 30621 T00401030621 ^x Explosive evaporative removal process of biological tissue by absorption of a CW laser has been simulated by using gelatin and a multimode Nd:YAG laser. Because the point of maximun temperature of laser-irradiated gelatin exists below the surface due to surface cooling, evaporation at the boiling temperature is made explosively from below the surface. The important parameters of this process are the conduction loss to laser power absorption (defined as the conduction-to-laser power parameter, Nk), the convection heat transfer at the surface to conduction loss (defined as Bi), dimensionless extinction coefficient (defined as Br.), and dimensionless irradiation time (defined as Fo). Dependence of Fo on Nk and Bi has been observed by experiment, and the results have been compared with the numerical results obtained by solving a 2-dimensional conduction equation. Fo and explosion depth (from the surface to the point of maximun temperature) are increased when Nk and Bi are increased.To find out the minimum laser power for explosive evaporative removal process, steady state analysis has been also made. The limit of Nk to induce evaporative removal, which is proportional to the inverse of the laser power, has been obtained. 30622 T00401030622 ^x N1 and N2 gross neural action potentials were measured from the round window of the guinea pig cochlea at the onset of the acoustic stimuli. N1-N2 audiograms were made by means of regulating stimulant intensities in order to produce constant N1-N2 potentials as criteria for different input tone pip frequencies. The lowest threshold was measured with an input tone pip I5 dB SPL in intensity and 12 KHz in frequency when the animal was in normal physiological condition. The procedure of experimental measurements is explained in detail. This experimental approach is very useful for the investigation of the Cochlear function. Both noN1inear and active functions of the Cochlea can be monitored by N1-N2 audiograms. 30623 T00401030623 ^x In electrical impedance tomography(EIT), we use boundary current and voltage measurements toprovide the information about the cross-sectional distribution of electrical impedance or resistivity. One of the major problems in EIT has been the inaccessibility of internal voltage or current data in finding the internal impedance values. We propose a new image reconstruction method using internal current density data measured by NMR. We obtained a two-dimensional current density distribution within a phantom by processing the real and imaginary MR images from a 4.77 NMR machine. We implemented a resistivity mage reconstruction algorithm using the finite element method and sensitivity matrix. We presented computer simulation results of the mage reconstruction algorithm and furture direction of the research. 30624 T00401030624 ^x A new method of digital image analysis technique for discrimination of cancer cell was presented in this paper. The object image was the Thyroid eland cells image that was diagnosed as normal and abnormal (two types of abnormal: follicular neoplastic cell, and papillary neoplastic cell), respectively. By using the proposed region segmentation algorithm, the cells were segmented into nucleus. The 16 feature parameters were used to calculate the features of each nucleus. A9 a consequence of using dominant feature parameters method proposed in this paper, discrimination rate of 91.11% was obtained for Thyroid Gland cells. 30625 T00401030625 ^x An electrical stimulator was designed to induce locomotion for paraplegic patients caused by central nervous system injury. Optimal stimulus parameters, which can minimize muscle fatigue and can achieve effective muscle contraction were determined in slow and fast muscles in Sprague-Dawley rats. Stimulus patterns of our stimulator were designed to simulate electromyographic activity monitored during locomotion of normal subjects. Muscle types of the lower extremity were classified according to their mechanical property of contraction, which are slow muscle (msoleus m.) and fast muscle (medial gastrocneminus m., rectus femoris m., vastus lateralis m.). Optimal parameters of electrical stimulation for slow muscles were 20 Hz, 0.2 ms square pulse. For fast muscle, 40 Hz, 0.3 ms square pulse was optimal to produce repeated contraction. Higher stimulus intensity was required when synergistic muscles were stimulated simultaneously than when they were stimulated individually. Electrical stimulation for each muscle was designed to generate bipedal locomotion, so that individual muscles alternate contraction and relaxation to simulate stance and swing phases. Portable electrical stimulator with 16 channels built in microprocessor was constructed and applied to paraplegic patients due to lumbar cord injury. The electrical stimulator restored partially gait function in paraplegic patients. 30626 T00401030626 ^x Two-Dimensional modelling of the Cochlear biomechanics is presented in this paper. The Laplace partial differential equation which represents the fluid mechanics of the Cochlea has been transformed into two-dimensional electrical transmission line. The procedure of this transformation is explained in detail. The comparison between one and two dimensional models is also presented. This electrical modelling of the basilar membrane (BM) is clearly useful for the next approach to the further. Development of active elements which are essential in the producing of the sharp tuning of the BM. This paper shows that two-dimension model is qualitatively better than one-dimensional model both in amplitude and phase responses of the BM displacement. The present model is only for frequency response. However because the model is electrical, the two-dimensional transmission line model can be extended to time response without any difficult. 30627 T00401030627 ^x A method has been proposed for the fully automatic detection of left ventricular endocardial boundary in 2D short axis echocardiogram using geometric model. The procedure has the following three distinct stages. First, the initial center is estimated by the initial center estimation algorithm which is applied to decimated image. Second, the center estimation algorithm is applied to original image and then best-fit elliptic model estimation is processed. Third, best-fit boundary is detected by the cost function which is based on the best-fit elliptic model. The proposed method shows effective result without manual intervention by a human operator. 30628 T00401030628 ^x The intelligent trajectory control method that controls moving direction and average velocity for a prosthetic arm is proposed by pattern recognition and force estimations using EMG signals. Also, we propose the real time trajectory planning method which generates continuous accelleration paths using 3 stage linear filters to minimize the impact to human body induced by arm motions and to reduce the muscle fatigue. We use combination of MLP and fuzzy filter for pattern recognition to estimate the direction of a muscle and Hogan's method for the force estimation. EMG signals are acquired by using a amputation simulator and 2 dimensional joystick motion. The simulation results of proposed prosthetic arm control system using the EMf signals show that the arm is effectively followed the desired trajectory depended on estimated force and direction of muscle movements. 30638 T00401030638 ^x A new neural network architecture for the recognition of patterns from images is proposed, which is partially based on the results of physiological studies. The proposed network is composed of multi-layers and the nerve cells in each layer are connected by spatial filters which approximate receptive fields in optic nerve fields. In the proposed method, patterns recognition for complicated images is carried out using global features as well as local features such as lines and end-points. A new generating method of matched filers representing global features is proposed in this network. 30659 T00401030659 ^x An implementation scheme of the magnetic nerve stimulator using a switching mode power supply is proposed. By using a switching mode power supply rather than a conventional linear power supply for charging high voltage capacitors, the weight and size of the magnetic nerve stimulator can be considerably reduced. Maximum output voltage of the developed magnetic nerve stimulator using the switching mode power supply is 3, 000 volts and switching time is about 100 msec. Experimental results or human nerve stimulations using the developed stimulator are presented. 30768 T00401030768 ^x In this paper, we describe the design methodology and specifications of the developed module-based bedside monitors for patient monitoring. The bedside monitor consists of a main unit and module cases with various parameter modules. The main unit includes a 12.1" TFT color LCD, a main CPU board, and peripherals such as a module controller, Ethernet LAN card, video card, rotate/push button controller, etc. The main unit can connect at maximum three module cases each of which can accommodate up to 7 parameter modules. They include the modules for electrocardiograph, respiration, invasive blood pressure, noninvasive blood pressure, temperature, and SpO2 with Plethysmograph.SpO2 with Plethysmograph.

• 한국우주과학회:학술대회논문집(한국우주과학회보)
• /
• 한국우주과학회 1993년도 한국우주과학회보 제2권2호
• /
• pp.17-17
• /
• 1993

The wall shear stress in the vicinity of end-to end anastomoses under steady flow conditions was measured using a flush-mounted hot-film anemometer(FMHFA) probe. The experimental measurements were in good agreement with numerical results except in flow with low Reynolds numbers. The wall shear stress increased proximal to the anastomosis in flow from the Penrose tubing (simulating an artery) to the PTFE: graft. In flow from the PTFE graft to the Penrose tubing, low wall shear stress was observed distal to the anastomosis. Abnormal distributions of wall shear stress in the vicinity of the anastomosis, resulting from the compliance mismatch between the graft and the host artery, might be an important factor of ANFH formation and the graft failure. The present study suggests a correlation between regions of the low wall shear stress and the development of anastomotic neointimal fibrous hyperplasia(ANPH) in end-to-end anastomoses. 30523 T00401030523 ^x Air pressure decay(APD) rate and ultrafiltration rate(UFR) tests were performed on new and saline rinsed dialyzers as well as those roused in patients several times. C-DAK 4000 (Cordis Dow) and CF IS-11 (Baxter Travenol) reused dialyzers obtained from the dialysis clinic were used in the present study. The new dialyzers exhibited a relatively flat APD, whereas saline rinsed and reused dialyzers showed considerable amount of decay. C-DAH dialyzers had a larger APD(11.70${\pm}$1.32mmHg/min)compared to CF dialyzers(4.32${\pm}$0.55mmHg/min)(p<0.05). However, there was no observable difference in the UFR between the two dialyzers. Neither APD nor UFR showed any significant increase with an increasing number of reuses for up to more than 20reuses. A substantial number of failures observed in APD(larger than 20mmHe/min)on the reused dialyzers(2 out of 40 CP and S out 26 C-DAK) were attributed to the Possible damage on the fibers. The CF 15-11 HFDs which failed APD test did not show changes in the UFR compared to normal dialyzers indicating that APD is a more sensitive test than UFR test to evaluate the integrity of the fibers. 30527 T00401030527 ^x For quantitative measurement of reflected light from a clinical diagnostic strip, a prototype old reflectance photometer was designed. The strip loader and cassette were made to obtain more accurate reflectance parameters. The strip was illuminated at 45˚c through optical fiber and the intensity of reflected light was determined at rectanguLat angle using a photodiode. The kubelka-munk coefficient and reflection optical density were determined ar four different wavelengths(500,550,570 and 610nm) for blood glucose strip. For higher concentration than 300mg/41 about glucose, a saturation state of abforbance was observed at 500,550 and 570nm. The correlation between glucose concentration and parameters was the best at 610nm. 30535 T00401030535 ^x Radiation-induced fibrosarcoma tumors were grown on the flanks of C3H mice. The mice were divided into two groups. One group was injected with Photofrin II, intravenously (2.5mg/kg body weight). The other group received no Photofrin II. Mice from both groups were irradialed for approximately 15 minutes at 100,300, or 500 mW/cm2 with the argon (488nm/514.5 nm), dye(628nm) and gold vapor (pulsed 628 nm) laser light. A photosensitizer behaved as an added absorber. Under our experimental conditions, the presence of Photolfrin II increased surface temperature by at least 40% and the temperature rise due to 300 mW/cm2 irradiation exceeded values for hyperthermia. Light and temperature distributions with depth were estimated by a computer model. The model demonstrated the influence of wavelength on the thermal process and proved to be a valuable tool to investigate internal temperature rise. 30536 T00401030536 ^x We investigated the structural geometry of thirty-eight Korean femurs. The purpose of this study is to identify major geometrical differences between Korean femurs 3nd others that we believe belong to Caucasians so that we would be able to get insights into the femoral component design that fits Asians including Koreans. We utilized computerized tomography (CT) images of femurs extracted from cadavers. The CT images were transformed into bitmap data by using a film scanner, and then analyzed by using a commercially available software called Image v.1.0 and a Macintosh IIci computer.The resulting data were compared with already published data. The major results show that the geometry of the Korean femurs is significantly different from that of Caucasians: (1) the anteversion angle and the canal flare index are greater by the amount of approximately 8˚ and 0.5, respectively, (2) the shape of the isthmus cross section is more round, and (3) the distance between the teaser trochanter and the proximal border of the isthmus is shelter by about 15 mm. The results suggested that the femoral component suitable for Asians should be different from the currently-used components designed and manufactured mostly by European or American companies. 30537 T00401030537 ^x It is well known that nonlinear propagation characteristics of the wave in the tissue may give very useful information for the medical diagnoisis. In this paper, a new method to detect nonlinear propagation characteristics of the internal vibration in the tissue for the low frequency mechanical vibration by using bispectral analysis is proposed. In the method, low frequency vibration of f0( = 100Hz) is applied on the surface of the object, and the waveform of the internal vibration x (t) is measured from Doppler frequency modulation of silmultaneously transmitted probing ultrasonic waves. Then, the bispectra of the signal x (t) at the frequencies (f0, f0) and (f0, 2f0) are calculated to estimate the nonlinear propagation characteristics as their magnitude ratio, w here since bispectrum is free from the gaussian additive noise we can get the value with high S/N. Basic experimental system is constructed by using 3.0 MHz probing ultrasonic waves and the several experiments are carried out for some phantoms. Results show the superiority of the proposed method to the conventional method using power spectrum and also its usefulness for the tissue characterization. 30541 T00401030541 ^x This paper describes the implementation of a computerized radial pulse diagnosis by aids of a clinical expert. On this base, we composed of the radial pulse diagnosis system in korean traditional medicine. The system composed of a radial pulse wave detection system and a radial pulse diagnosis system. With a detection system, we detected Inyoung and Cheongu radial pulse wave and processed it. Then, we have got the characteristic parameters of radial pulse wave and also quantified that according to the method of Inyoung-Cheongu Comparison Radial Pulse Diagnosis. We defined the jugement standard of radial pulse diagnosis system and then we confirmed the possibility for realization of automatic radial pulse diagnosis in korean traditional medicine. 30545 T00401030545 ^x Microspheres are expected to be applied to biomedical areas such as solid-phase immunoassays, drug delivery systems, immunomagnetic cell separation. To synthesize microspheres for biomedical application, "two stage shot growth method" was developed. The uniformity ratio of synthesized microspheres was always smaller than 1.05. And the surface charge density (or the number of ionizable functional groups) of the microspheres synthesized by "two stage shot growth method" was 6~13 times higher than that of the microspheres synthesized by conventional seeded batch copolymerization. As a previous step for biomedical application, adsorption experiments of bovine albumin on microspheres were carried out under various conditions. The maximum adsorbed amount was obtained in the neighborhood of pH 4.5. Isoelectric point of bovine albumin is pH 5.0, so experimental result shows that it shifted to acid area. The adsorption isotherm was obtained, the plateau region was always reached at 2.Og/L (bulk concentration of bovine albumin).The effect of the kind and the amount of surface functional group was also examined. 30575 T00401030575 ^x A medical image workstation was developed using multimedia technique. The system based on PC-486DX was designed to acquire medical images produced by medical imaging instruments and related audio information, that is, doctors' reporting results. Input information was processed and analyzed, then the results were presented in the form of graph and animation. All the informations of the system were hierarchically related with the image as the apex. Processing and analysis algorithms were implemented so that the diagnostic accuracy could be improved. The diagnosed information can be transferred for patient diagnosis through LAN(local area network). 30592 T00401030592 ^x In the conventional infrared imaging system, complex infrared lens systems are usually used for directing collimated narrow infrared beams into the high speed 2-dimensional optic scanner. In this paper, a simple reflective infrared optic system with a 2-dimensional optic scanner is proposed for the realization of medical infrared thermography system. It has been experimentally proven that the intfrared thermography system composed of the proposed optic system has the temperature resolution of 0.1˚c under the spatial resolution of lmrad, the image matrix size of 256 X 240, and tile imaging time of 4 seconds. 30593 T00401030593 ^x In this paper, MIIS (Medical Image Information System) has been designed and implemented using INGRES RDBMS, which is based on a client/server architecture. The implemented system allows users to register and retrieve patient information, medical images and diagnostic reports. It also provides the function to display these information on workstation windows simultaneously by using the designed menu-driven graphic user interface. The medical image compression/decompression techniques are implemented and integrated into the medical image database system for the efficient data storage and the fast access through the network. 30594 T00401030594 ^x In this paper, computerized BEAM was implemented for the space domain analysis of EEG. Trans-formation from temporal summation to two-dimensional mappings is formed by 4 nearest point inter-polaton method. Methods of representation of BEAM are two. One is dot density method which classify brain electrical potential 9 levels by dot density of gray levels and the other is colour method which classify brain electrical 12 levels by red-green colours. In this BEAM, instantaneous change and average energy distribution over any arbitrary time interval of brain electrical activity could be observed and analyzed easily. In the frequency domain, the distribution of energy spectrum of a special band can easily be distinguished normality and abnormality. 30608 T00401030608 ^x Laboratory information system (LIS) is a key tool to manage laboratory data in clinical pathology. Our department has developed an information system for routine hematology using down-sized computer system. We have used an IBM 486 compatible PC with 16MB main memory, 210 MB hard disk drive, 9 RS-232C port and 24 pin dot printer. The operating system and database management system were SCO UNIX and SCO foxbase, respectively. For program development, we used Xbase language provided by SCO foxbase. The C language was used for interface purpose. To make the system use friendly, pull-down menu was used. The system connected to our hospital information system via application program interface (API), so the information related to patient and request details is automatically transmitted to our computer. Our system interfaced with fwd complete blood count analyzers(Sysmex NE-8000 and Coulter STKS) for unidirectional data tansmission from analyzer to computer. The authors suggests that this system based on down-sized computer could provide a progressive approach to total LIS based on local area network, and the implemented system could serve as a model for other hospital's LIS for routine hematology. 30609 T00401030609 ^x To develop an artificial bone substitute that is gradually degraded and replaced by the regenerated natural bone, the authors designed a composite that is consisted of calcium phosphate and collagen. To use as the structural matrix of the composite, collagen was purified from human umbilical cord. The obtained collagen was treated by pepsin to remove telopeptides, and finally, the immune-free atelocollagen was produced: The cross linked atelocollagen was highly resistant to the collagenase induced collagenolysis. The cross linked collagen demonstrated an improved tensile strength. 30618 T00401030618 ^x This paper is a study on the design of adptive filter for QRS complex detection. We propose a simple adaptive algorithm to increase capability of noise cancelation in QRS complex detection with two stage adaptive filter. At the first stage, background noise is removed and at the next stage, only spectrum of QRS complex components is passed. Two adaptive filters can afford to keep track of the changes of both noise and QRS complex. Each adaptive filter consists of prediction error filter and FIR filter The impulse response of FIR filter uses coefficients of prediction error filter. The detection rates for 105 and 108 of MIT/BIH data base were 99.3% and 97.4% respectively. 30619 T00401030619 ^x To develop an artificial bone substitute that is gradually degraded and replaced by the regenerated natural bone, the authors designed and produced a composite that is consisted of calcium phosphate and collagen. Human umbilical cord origin pepsin treated type I atelocollagen was used as the structural matrix, by which sintered or non-sintered carbonate apatite was encapsulated to form an inorganic-organic composite. With cross linking atelocollagen by UV ray irradiation, the resistance to both compressive and tensile strength was increased. Collagen degradation by the collagenase induced collagenolysis was also decreased. 30620 T00401030620 ^x We have developed a monoleaflet polymer valve as an inexpensive and viable alternative, especially for short-term use in the ventricular assist device or total artificial heart. The frame and leaflet of the polymer valve were made from polyurethane, To evaluate the hemodynamic performance of the polymer valve a comparative study of flow dynamics past a polymer valve and a St. Jude Medical prosthetic valve under physiological pulsatile flow conditions in vitro was made. Comparisons between the valves were made on the transvalvular pressure drop, regurgitation volume and maximum valve opening area. The polymer valve showed smaller regurgitation volume and transvalvular pressure drop compared to the mechanical valve at higher heart rate. The results showed that the functional characteristics of the polymer valve compared favorably with those of the mechanical valve at higher heart rate. 30621 T00401030621 ^x Explosive evaporative removal process of biological tissue by absorption of a CW laser has been simulated by using gelatin and a multimode Nd:YAG laser. Because the point of maximun temperature of laser-irradiated gelatin exists below the surface due to surface cooling, evaporation at the boiling temperature is made explosively from below the surface. The important parameters of this process are the conduction loss to laser power absorption (defined as the conduction-to-laser power parameter, Nk), the convection heat transfer at the surface to conduction loss (defined as Bi), dimensionless extinction coefficient (defined as Br.), and dimensionless irradiation time (defined as Fo). Dependence of Fo on Nk and Bi has been observed by experiment, and the results have been compared with the numerical results obtained by solving a 2-dimensional conduction equation. Fo and explosion depth (from the surface to the point of maximun temperature) are increased when Nk and Bi are increased.To find out the minimum laser power for explosive evaporative removal process, steady state analysis has been also made. The limit of Nk to induce evaporative removal, which is proportional to the inverse of the laser power, has been obtained. 30622 T00401030622 ^x N1 and N2 gross neural action potentials were measured from the round window of the guinea pig cochlea at the onset of the acoustic stimuli. N1-N2 audiograms were made by means of regulating stimulant intensities in order to produce constant N1-N2 potentials as criteria for different input tone pip frequencies. The lowest threshold was measured with an input tone pip I5 dB SPL in intensity and 12 KHz in frequency when the animal was in normal physiological condition. The procedure of experimental measurements is explained in detail. This experimental approach is very useful for the investigation of the Cochlear function. Both noN1inear and active functions of the Cochlea can be monitored by N1-N2 audiograms. 30623 T00401030623 ^x In electrical impedance tomography(EIT), we use boundary current and voltage measurements toprovide the information about the cross-sectional distribution of electrical impedance or resistivity. One of the major problems in EIT has been the inaccessibility of internal voltage or current data in finding the internal impedance values. We propose a new image reconstruction method using internal current density data measured by NMR. We obtained a two-dimensional current density distribution within a phantom by processing the real and imaginary MR images from a 4.77 NMR machine. We implemented a resistivity mage reconstruction algorithm using the finite element method and sensitivity matrix. We presented computer simulation results of the mage reconstruction algorithm and furture direction of the research. 30624 T00401030624 ^x A new method of digital image analysis technique for discrimination of cancer cell was presented in this paper. The object image was the Thyroid eland cells image that was diagnosed as normal and abnormal (two types of abnormal: follicular neoplastic cell, and papillary neoplastic cell), respectively. By using the proposed region segmentation algorithm, the cells were segmented into nucleus. The 16 feature parameters were used to calculate the features of each nucleus. A9 a consequence of using dominant feature parameters method proposed in this paper, discrimination rate of 91.11% was obtained for Thyroid Gland cells. 30625 T00401030625 ^x An electrical stimulator was designed to induce locomotion for paraplegic patients caused by central nervous system injury. Optimal stimulus parameters, which can minimize muscle fatigue and can achieve effective muscle contraction were determined in slow and fast muscles in Sprague-Dawley rats. Stimulus patterns of our stimulator were designed to simulate electromyographic activity monitored during locomotion of normal subjects. Muscle types of the lower extremity were classified according to their mechanical property of contraction, which are slow muscle (msoleus m.) and fast muscle (medial gastrocneminus m., rectus femoris m., vastus lateralis m.). Optimal parameters of electrical stimulation for slow muscles were 20 Hz, 0.2 ms square pulse. For fast muscle, 40 Hz, 0.3 ms square pulse was optimal to produce repeated contraction. Higher stimulus intensity was required when synergistic muscles were stimulated simultaneously than when they were stimulated individually. Electrical stimulation for each muscle was designed to generate bipedal locomotion, so that individual muscles alternate contraction and relaxation to simulate stance and swing phases. Portable electrical stimulator with 16 channels built in microprocessor was constructed and applied to paraplegic patients due to lumbar cord injury. The electrical stimulator restored partially gait function in paraplegic patients. 30626 T00401030626 ^x Two-Dimensional modelling of the Cochlear biomechanics is presented in this paper. The Laplace partial differential equation which represents the fluid mechanics of the Cochlea has been transformed into two-dimensional electrical transmission line. The procedure of this transformation is explained in detail. The comparison between one and two dimensional models is also presented. This electrical modelling of the basilar membrane (BM) is clearly useful for the next approach to the further. Development of active elements which are essential in the producing of the sharp tuning of the BM. This paper shows that two-dimension model is qualitatively better than one-dimensional model both in amplitude and phase responses of the BM displacement. The present model is only for frequency response. However because the model is electrical, the two-dimensional transmission line model can be extended to time response without any difficult. 30627 T00401030627 ^x A method has been proposed for the fully automatic detection of left ventricular endocardial boundary in 2D short axis echocardiogram using geometric model. The procedure has the following three distinct stages. First, the initial center is estimated by the initial center estimation algorithm which is applied to decimated image. Second, the center estimation algorithm is applied to original image and then best-fit elliptic model estimation is processed. Third, best-fit boundary is detected by the cost function which is based on the best-fit elliptic model. The proposed method shows effective result without manual intervention by a human operator. 30628 T00401030628 ^x The intelligent trajectory control method that controls moving direction and average velocity for a prosthetic arm is proposed by pattern recognition and force estimations using EMG signals. Also, we propose the real time trajectory planning method which generates continuous accelleration paths using 3 stage linear filters to minimize the impact to human body induced by arm motions and to reduce the muscle fatigue. We use combination of MLP and fuzzy filter for pattern recognition to estimate the direction of a muscle and Hogan's method for the force estimation. EMG signals are acquired by using a amputation simulator and 2 dimensional joystick motion. The simulation results of proposed prosthetic arm control system using the EMf signals show that the arm is effectively followed the desired trajectory depended on estimated force and direction of muscle movements. 30638 T00401030638 ^x A new neural network architecture for the recognition of patterns from images is proposed, which is partially based on the results of physiological studies. The proposed network is composed of multi-layers and the nerve cells in each layer are connected by spatial filters which approximate receptive fields in optic nerve fields. In the proposed method, patterns recognition for complicated images is carried out using global features as well as local features such as lines and end-points. A new generating method of matched filers representing global features is proposed in this network. 30659 T00401030659 ^x An implementation scheme of the magnetic nerve stimulator using a switching mode power supply is proposed. By using a switching mode power supply rather than a conventional linear power supply for charging high voltage capacitors, the weight and size of the magnetic nerve stimulator can be considerably reduced. Maximum output voltage of the developed magnetic nerve stimulator using the switching mode power supply is 3,000 volts and switching time is about 100 msec. Experimental results or human nerve stimulations using the developed stimulator are presented. 30768 T00401030768 ^x In this paper, we describe the design methodology and specifications of the developed module-based bedside monitors for patient monitoring. The bedside monitor consists of a main unit and module cases with various parameter modules. The main unit includes a 12.1" TFT color LCD, a main CPU board, and peripherals such as a module controller, Ethernet LAN card, video card, rotate/push button controller, etc. The main unit can connect at maximum three module cases each of which can accommodate up to 7 parameter modules. They include the modules for electrocardiograph, respiration, invasive blood pressure, noninvasive blood pressure, temperature, and SpO2 with Plethysmograph.

• 인터넷정보학회논문지
• /
• 제14권5호
• /
• pp.1-10
• /
• 2013

RFID(Radio Frequency Identification)시스템은 하나의 RFDI리더, 다수의 RFID태그 장치들로 이루어진 비접촉방식의 근거리 무선 인식 기술이다. RFID태그는 자체적인 연산 수행이 가능한 능동형 태그와 이에 비해 성능은 떨어지지만 저렴한 가격으로 물류 유통에 적합한 수동형 태그로 나눌 수 있다. 데이터 처리 장치는 리더와 연결되어 리더가 전송받은 정보를 처리한다. RFID 시스템은 무선주파수를 이용해 다수의 태그를 빠른 시간에 인식할 수 있다. RFID시스템은 유통, 물류, 운송, 물품관리, 출입 통제, 금융 등 다양한 분야에서 응용되고 있다. 하지만 RFID시스템을 더욱 확산시키기 위해서는 가격, 크기, 전력소모, 보안 등 해결할 문제가 많다. 그 문제들 중에서 본 논문에서는 다수의 수동형 태그를 인식할 때 발생하는 충돌 문제를 해결하기 위한 알고리즘을 제안한다. RFID 시스템에서 다수의 태그를 인식하기 위한 충돌 방지 기법에는 확률적인 방식과 결정적인 방식 그리고 이를 혼합한 하이브리드 방식이 있다. 본 논문에서는 우선 기존에 있던 확률적 방식의 충돌방지기법인 알로하 기반 프로토콜과 결정적 방식의 충돌방지기법인 트리 기반 프로토콜에 대해 소개한다. 알로하 기반 프로토콜은 시간을 슬롯 단위로 나누고 태그들이 각자 임의로 슬롯을 선택하여 자신의 ID를 전송하는 방식이다. 하지만 알로하 기반 프로토콜은 태그가 슬롯을 선택하는 것이 확률적이기 때문에 모든 태그를 인식하는 것을 보장하지 못한다. 반면, 트리 기반의 프로토콜은 리더의 전송 범위 내에 있는 모든 태그를 인식하는 것을 보장한다. 트리 기반의 프로토콜은 리더가 태그에게 질의 하면 태그가 리더에게 응답하는 방식으로 태그를 인식한다. 리더가 질의 할 때, 두 개 이상의 태그가 응답 한다면 충돌이라고 한다. 충돌이 발생하면 리더는 새로운 질의를 만들어 태그에게 전송한다. 즉, 충돌이 자주 발생하면 새로운 질의를 자주 생성해야하기 때문에 속도가 저하된다. 그렇기 때문에 다수의 태그를 빠르게 인식하기 위해서는 충돌을 줄일 수 있는 효율적인 알고리즘이 필요하다. 모든 RFID태그는 96비트의 EPC(Electronic Product Code)의 태그ID를 가진다. 이렇게 제작된 다수의 태그들은 회사 또는 제조업체에 따라 동일한 프리픽스를 가진 유사한 태그ID를 가지게 된다. 이 경우 쿼리 트리 프로토콜을 이용하여 다수의 태그를 인식 하는 경우 충돌이 자주 일어나게 된다. 그 결과 질의-응답 수는 증가하고 유휴 노드가 발생하여 식별 효율 및 속도에 큰 영향을 미치게 된다. 이 문제를 해결하기 위해 충돌 트리 프로토콜과 M-ary 쿼리 트리 프로토콜이 제안되었다. 하지만 충돌 트리 프로토콜은 쿼리 트리 프로토콜과 마찬가지로 한번에 1비트씩 밖에 인식을 못한다는 단점이 있다. 그리고 유사한 태그ID들이 다수 존재할 경우, M-ary 쿼리 트리 프로토콜을 이용해 인식 하면, 불필요한 질의-응답이 증가한다. 본 논문에서는 이러한 문제를 해결하고자 M-ary 쿼리 트리 프로토콜의 매핑 함수를 이용한 m-비트 인식, 맨체스터 코딩을 이용한 태그 ID의 충돌정보, M-ary 쿼리 트리의 깊이를 하나 감소시킬 수 있는 예측 기법을 이용하여 성능을 향상시킨 적응형 M-ary 쿼리트리 프로토콜을 제안한다. 본 논문에서는 기존의 트리기반의 프로토콜과 제안하는 기법을 동일한 조건으로 실험하여 비교 분석 하였다. 그 결과 제안하는 기법은 식별시간, 식별효율 등에서 다른 기법들보다 성능이 우수하다.

• 지능정보연구
• /
• 제20권1호
• /
• pp.35-48
• /
• 2014

2013년 건설 경기 전망 보고서에 따르면 주택건설경기 침체 상황의 지속으로 건설 기업의 유동성 위기가 지속될 것으로 전망된다. 건설업은 파산으로 인한 사회적 파급효과가 다른 산업에 비해 큰 편이지만, 업종의 특성상 다른 산업과는 상이한 자본구조와 부채비율, 현금흐름을 가지고 있어서 기업의 파산 예측이 더 어려운 측면이 있다. 건설업은 레버리지가 큰 산업으로 부채비율이 매우 높은 업종이며 현금흐름이 프로젝트 후반부에 집중되는 특성이 있다. 그리고 경기사이클에 따른 부침이 매우 심하여 경기하강국면에선 파산이 급증하는 양상을 보인다. 건설업이 레버리지 산업인 이상 건설업체의 파산율 증가는 여신을 공여한 은행에 큰 부담으로 작용한다. 그럼에도 그간의 파산예측모델이 주로 금융기관에 집중되어 왔고 건설업종에 특화된 연구는 드물었다. 기업의 재무 자료를 바탕으로 한 파산 예측 모델에 대한 연구는 오래 전부터 다양하게 진행되었다. 하지만, 일반적인 기업 전체를 대상으로 하는 모델이기 때문에, 건설 기업과 같이 유동성이 큰 기업의 예측에는 적절하지 못할 수 있다. 건설 산업은 오랜 사업 기간과 대규모 투자, 그리고 투자금 회수가 오래 걸리는 특징을 갖는 자본 집약 산업이다. 이로 인해 다른 산업과는 상이한 자본 구조를 갖기 마련이고, 다른 산업의 기업 재무 위험도를 판단하는 기준과 동일한 적용이 곤란할 수 있다. 최근에는 기계 학습을 바탕으로 한 기업 파산 예측 연구가 활발하다. 기계 학습의 대표적 응용 분야인 패턴 인식을 기업의 파산 예측에 응용한 것이다. 기업의 재무 정보를 바탕으로 패턴을 작성하고 이 패턴이 파산 위험 군에 속하는지 안전한 군에 속하는지 판단하는 것이다. 전통적인 Z-Score와 기계 학습을 이용한 파산 예측과 같은 기존 연구들은 특정 산업 분야가 아닌 일반적인 기업을 대상으로 하기 때문에 기업들의 특성을 전혀 고려하고 있지 못하다. 본 논문에서는 건설 기업을 규모에 따라 각 기법들의 예측 능력을 비교하여 적응형 부스팅이 가장 우수함을 확인하였다. 본 논문은 건설 기업을 자본금 규모에 따라 세 등급으로 분류하고 각각에 대해 적응형 부스팅의 예측력을 분석하였다. 실험 결과 적응형 부스팅이 다른 기법에 비해 예측 결과가 좋았고, 특히 자본금 규모가 500억 이상인 기업의 경우 아주 우수한 결과를 보였다.

• Asia Marketing Journal
• /
• 제12권2호
• /
• pp.111-133
• /
• 2010

투자상품의 확산, 고령화 등으로 인한 금융니즈 다양화와 자본시장법 시행으로 인한 금융회사간 치열한 경쟁으로 인해 금융산업 내에서 마케팅의 역할이 더욱 중요해지고 있다. 그러나, 지금까지 다른 산업에 비해 금융산업의 마케팅 연구는 상대적으로 부족하였다. 본 연구는 향후 구체적인 금융마케팅 연구들이 진행되기에 앞서 국내 금융마케팅 연구들을 정리하고, 국내 금융회사 마케팅 담당자를 In-depth 인터뷰하여 실제 국내 금융 마케팅 현황을 조사하였다. 이를 통해 향후 금융마케팅 연구에 필요한 시사점을 얻고자 하였다. 분석 결과, 다른 산업의 마케팅과 다른 금융 마케팅만의 고유 특징에 대한 이론적인 연구가 부족하였고, 금융산업 내에서 은행, 증권, 보험, 카드 산업 간의 마케팅 특징 차이에 대한 연구도 부족하였음을 알 수 있었다. 소비자행동 관점에서 금융고객의 의사결정 과정에 관한 연구도 부족하였다. 또한, 우리나라의 금융회사의 마케팅 현황은 외형적으로 어느 정도 성숙 단계에 접어들었다고 볼 수 있으나, 실제 업무는 여전히 과거의 영업지원, 혹은 프로모션 및 CRM 데이터 분석 등 단기적인 부분에 치중되어 있었다. 그리고, 은행, 증권, 보험, 카드 회사 등 각 세부 금융산업별 마케팅 담당자들이 중요하게 생각하는 금융마케팅의 키워드와 문제 인식 정도도 서로 다름을 알 수 있었다. 본 연구는 이러한 분석 결과를 바탕으로 향후 금융마케팅 연구를 위한 시사점과 함께 6가지의 연구명제를 제안하였다.

• 한국식품영양과학회지
• /
• 제41권8호
• /
• pp.1118-1133
• /
• 2012

본 연구는 충청북도 지역 학교 영양(교)사를 대상으로 학교급식 식단관리 운영실태 및 인식을 조사함으로써 학교급식의 효율적인 개선방안을 제시하고자 하였으며 조사기간은 2010년 9월 1일부터 9월 15일까지로, 배포된 설문지는 328부이며 이 중 265부(80.8%)가 분석에 이용되었다. 연구 결과의 요약은 다음과 같다. 첫째, 조사대상의 일반사항으로 학교유형은 초등학교 55.8%, 중학교 22.3%, 고등학교 21.9%로, 급식유형은 도시형이 54.0%, 농촌형이 46.0%로 나타났다. 학교에서 1일 제공하는 끼니 수에 대해 1식이 80.8%, 2식이 5.3%, 3식이 13.9%로 중식 한 끼를 제공하는 학교가 가장 많았으며, 식단형태는 98.8%가 단일식단을, 0.4%가 선택식단, 0.8%가 단일식단과 선택식단을 같이 사용하였다. 둘째, 학교급식 식단 작성 시 고려요인의 중요도 및 어려운 정도에 대한 조사결과로 중요도 점수가 식품비예산(평균 4.53점)으로 가장 높았으며, 식중독위해요소(4.42점), 영양기준량(4,42점), 피 급식자의 기호도 및 선호도(4.18점), 조리시간(3.90점), 급식시설 및 기기수준(3.88점), 식재료의 원산지(3.79점), 음식의 색과 모양(3.77점) 순이었으며, 모든 고려요인의 중요도 점수가 3점(보통이다) 이상이었다. 어려운 점은 '식품비예산'(평균 4.27점)에 대한 사항이 가장 높게 나타났으며, '피 급식자의 기호도 및 선호도'(4.06점), '식중독위해요소'(3.98점), '급식시설 및 기기수준'(3.90점), '조리시간'(3.82점), '조리종사원 수'(3.68점), '조리종사원의 숙련도'(3.67점), '적온배식'(3.51점) 순으로 나타났으며, 모든 고려요인의 어려운 정도 점수가 3점(보통이다) 이상이었다. 셋째, 식단 작성 시 영양관리에 관한 조사결과 식단 작성 시 고려주기에 대해 주별이 63.8%로 가장 높았고, 끼니별 31.3%, 월별 3.8%, 계절별 1.1% 순이었다. 식단 작성 시 가장 먼저 고려하는 영양소로 1순위는 에너지가 90.1%로 가장 높은 응답률을 나타냈다. 식단 작성 시 가장 초과되는 영양소는 단백질이 41.9%로 가장 높았고 에너지 36.2%, 칼슘 9.8%, 비타민류 7.9%, 철분 4.2% 순이었다. 반면, 식단 작성 시 가장 부족한 영양소는 칼슘이 37.7%로 가장 높게 응답률을 나타냈고, 철분 33.6%, 비타민류 17.0%, 에너지 10.2%, 단백질 1.5% 순이었다. 에너지 구성 권장비 중 가장 초과되는 영양소는 단백질이 47.2%로 가장 높았고, 탄수화물 29.4%, 지방 23.4% 순이었다. 넷째, 학교급식법령에 제시된 식단 작성 시 고려해야 할 사항 및 영양관리기준에 대한 인지도, 중요도 및 수행도 점수를 조사결과 학교급식법령에 제시된 식단 작성 시 고려하여할 사항은 '전통식문화의 계승발전을 고려', '곡류 및 전분류, 채소류 및 과일류, 어육류 및 콩류, 우유 및 유제품 등 다양한 종류의 식품을 사용', '염분, 유지류, 단순당류 또는 식품첨가물 등을 과다하게 사용하지 않음', '가급적 자연식품과 계절식품을 사용', '다양한 조리방법을 활용' 모두 5개 항목으로 인지도 점수결과 '전통식문화의 계승발전을 고려'(평균 3.78점) 이외의 항목은 4점(준수한다) 이상이었으며, '곡류 및 전분류, 채소류 및 과일류, 어육류 및 콩류, 우유 및 유제품 등 다양한 종류의 식품을 사용'(4.40점), '가급적 자연식품과 계절식품을 사용'(4.40점)이 높게 나타났다. 중요도 점수결과 '전통식문화의 계승발전을 고려'(3.77점) 이외의 항목은 4점(준수한다) 이상이었으며, '곡류 및 전분류, 채소류 및 과일류, 어육류 및 콩류, 우유 및 유제품 등 다양한 종류의 식품을 사용'(4.45점), '염분, 유지류, 단순 당류 또는 식품첨가물 등을 과다하게 사용하지 않음'(4.45점)이 높게 나타났다. 수행도 점수결과 '다양한 조리방법을 활용'(3.71점)과 '전통식문화의 계승발전을 고려'(3.29점) 이외의 항목은 4점(준수한다) 이상이었으며, '가급적 자연식품과 계절식품을 사용'(4.24점)이 높게 나타났다. 5개 항목 중 '전통식문화의 계승발전을 고려'가 인지도, 중요도, 수행도 모든 부분에서 다른 항목에 비해 낮은 점수를 나타냈다. 학교급식법령에 제시된 학교급식 영양관리기준 '학년별 성별 에너지공급기준${\pm}10%$ 이내', '탄수화물(5~70%) : 단백질(7~20%) :지방(15~30%) 비율', '단백질 상한 비율(20%) 이내', '칼슘 등 미량영양소 기준'에 대한 인지도, 중요도 및 수행도 점수를 분석하였다. 인지도, 중요도 및 수행도 조사 결과 모든 항목에서 4점 이상(5점 만점)이었다. 인지도는 '탄수화물(55~70%) : 단백질(7~20%) :지방(15~30%) 비율'과 '단백질 상한 비율(20%) 이내'가 각각 평균 4.59점, 4.56점이었고, '칼슘 등 미량영양소 기준'은 평균 4.33점이었다. 중요도는 '학년별 성별 에너지공급기준${\pm}10%$ 이내'와 '탄수화물(55~70%) : 단백질(7~20%) :지방(15~30%) 비율'이 각각 평균 4.39점, 4.38점이었고, 칼슘 등 미량영양소 기준'은 평균 4.16점이었다. 수행도는 '탄수화물(55~70%) : 단백질(7~20%) :지방(15~30%) 비율'과 '학년별 성별 에너지공급기준${\pm}10%$ 이내'가 각각 평균 4.34점, 4.27점이었다. 다섯째, 학교급식 식단 작성 시 영양관리기준 적용실태에 대한 조사결과 1일 영양기준량(아침:점심:저녁) 적용 비율은 1:1.5:1.5가 38.5%로 가장 높게 나타났고, 1일 영양기준량을 탄력으로 적용하는 이유로는 '아침 결식률을 고려해서'가 59.2%로 가장 높았고, 1일 영양기준량(아침:점심:저녁) 탄력적으로 적용하는 방법으로는 '실태조사 없이 임의자료로 운영위원회의 심의를 받아 적용'이 49.4%로 가장 높았다. 여섯째, 학교급식법령에 제시된 영양관리기준량에 따른 급식 제공시 어려운 정도를 조사한 결과 '피 급식자의 기호도 반영이 어렵다는 점'(평균 4.19점)과 '실제 공급량과 급식일지의 불일치한다는 점'(4.07점), '급식단가에 따라 적절한 영양소 공급이 어렵다는 점'(4.03점), '미량 영양소나 에너지 균형의 어려운 점'(3.94점), '새로운 메뉴개발의 업무가 소홀해진다는 점'(3.89점), '학교특성에 맞는 요구량을 맞출 수 없다는 점'(3.62점), '영양기준 비적용대상이 함께 급식수혜자가 된다는 점'(3.28점)으로 조사되었다. 일곱째, 학교급식에서의 표준조리법 작성실태 및 인식에 대한 조사결과 표준조리법 작성방법에 대해 '교육행정정보시스템의 요리관리'가 87.5%로 가장 높게 나타났고, 교육행정정보시스템과 개인 소장표준조리법을 함께 사용하는 경우가 9.1%이었다. 작성 중인 표준 조리법 구성항목은 '음식명', '식품명', '1인 분량'은 조사 대상 전체인 100%가 작성하고 있었고 '영양가 분석'은 73.6%, '조리방법'은 71.3%이었으나 '이용 배식도구'는 4.9%로 낮았다. 표준조리법 용도는 '생산되는 음식의 양을 균일성 있게 유지'하도록 하는데 30.4%이었다.

• 중소기업연구
• /
• 제32권2호
• /
• pp.209-223
• /
• 2010

본고에서는 일본 중견기업의 위상, 특징, 관련 정책을 검토함으로써 우리나라에서의 중견기업 정책의 방향을 모색하고자 한다. 일본의 경쟁우위업종인 기계, 전자부품업의 출하와 고용비중은 여타 업종보다 높아, 그 저변에 두터운 중견기업이 존재하고 있음을 알 수 있다. 일본의 중견기업 육성정책은 연구개발과 환경대책을 위한 기업간 제휴 유도라는 측면에서 간접적으로 지원하고 있다. 우리나라도 특정 정책사업에 있어서 기업간 협력 유도를 통하여 중견기업을 육성할 수 있을 것이다.

• 마케팅과학연구
• /
• 제19권4호
• /
• pp.32-43
• /
• 2009

信任在心理学, 经济学, 社会学中已被广泛研究, 其重要性不仅在市场营销中被强调, 在一般商业原则中也被强调. 供应商和买家之间的关系与过去不同, 过去的关系需要相当大的私人网络优势, 并可能涉及不道德的商业行为. 而在以工业营销成功的为核心的二十一世纪激烈的全球竞争中, 供应商和买家之间的关系是伙伴关系. 在相互合作的高级别信任的基础上, 通过交换的关系, 这会给买家和供应商带来长期的利益, 竞争力增强和交易成本的降低以及其他福利. 尽管现有的研究有信任的重要性, 但是在购买与供应关系中却忽视了信任的作用, 也没有系统地分析信任对关系的影响. 因此, 深入研究, 确定买家和商业服务供应商之间信任和关系绩效之间的联系是绝对需要的. 本研究中的商业服务, 包括那些支持制造业, 正作为下一代经济增长的引擎而吸引着人们的注意. 韩国政府已选择其作为制造业发展的战略领域. 由于商业服务开放市场的需求日趋激烈, 商业服务业的竞争力应该比以往得到更多的提倡. 本研究的目的是探索相互信任对买家和供应商之间的关系绩效的影响. 具体来说, 本研究在商业服务交易中提出了一个关于信任-关系绩效的理论模型, 并实证检验根据模型而提出的假设. 这项研究表明, 研究结果有战略意义. 本研究通过多种方法收集经验数据. 这些方法包括通过电话, 邮件和面试. 作为样本的公司是在韩国供应和购买商业服务的以知识为本的公司. 本研究收集的是二进的基础数据. 每个样本公司对包括购买公司及其相应的供应公司. 并跟踪调查每个公司对的相互信任. 本研究为商业服务的买卖双方提出了信任-关系绩效的模型. 该模型由信任和它的前因和后果. 买家的信任分为对供应公司的信任和对销售人员的信任. 根据Doney 和Cannon (1997)的研究我们在个人水平和组织水平上观察信任. 通常情况下, 买方是信任的受体, 但这项研究我们建议以供应商为观察受体. 因此, 它独特的关注了双边角度的知觉风险. 换言之, 供应商和买家一样, 是信任的主体, 因为交易通常是双边的. 从这个角度来看, 供应商对买家信任和买方对供货商的信赖一样重要. 供应商的信任从某种程度上受它信任的买方公司和买家的影响. 这种使用个人水平和组织水平的信任分类是根据Doney 和Cannon (1997)的研究. 信任影响供应商的选择, 这是一项双向放的工作. 供应商们积极参与供应商选择过程中, 和买家密切的一起工作. 此外, 该过程从某种程度上受每一方信任的合作伙伴的影响. 挑选过程包括一些步骤: 识别, 信息检索, 供应商选择和绩效评价. 作为这一进程的结果, 买家和供应商都进行绩效评估, 并就这些结果为基础, 采取有形或无形的纠正行动. 本研究中使用的关于信任的测量问项是根据Mayer, Davis 和 Schoorman (1995) 以及Mayer和Davis (1999)的研究发展起来的. 根据他们的建议, 有关信任的三个方面的研究包括有能力, 善和完整. 根据商业服务这个背景我们调整了原来的问题. 例如, 如 "他/她的专业能力" 已被改为 "当我们讨论我们的产品时销售人员表现出专业能力. "这项研究使用的测量问项不同于在以往的研究中使用的问项（Rotter 1967; Sullivan和Peterson 1982; Dwyer和Oh 1987. 本研究中有关信任的前因后果的测量问项是根据Doney和Cannon (1997)的研究为基础制定的. 根据商业服务这个背景我们调整了原来的问题. 特别是, 问题被设计为对买家和供应商以解决下列因素: 信誉 (诚信, 客户服务, 良好意愿), 市场地位 (公司规模, 市场份额, 在行业中的地位), 愿意定制（产品, 过程, 交付), 信息共享(专有信息, 个人信息), 愿意保持良好关系, 认为专业, 权威授权, 买方与卖方的相似性, 以及接触频率. 作为信任相应的变量, 我们对关系绩效进行了测试. 关系绩效分为有形的影响, 无形影响, 和副作用. 有形的影响包括财务业绩;无形的影响, 包括关系的改善, 网络开发, 以及内部员工的满意度;副作用包括既不是有形影响也不是无形影响的影响. 我们联系了350对公司, 105对公司答复了我们. 由于不完整我们删除了5对公司, 105对公司被用于数据分析. 用于数据分析的回应率为30%(三百五十零分之一百零五), 高于工业营销的平均回复比率. 至于回复的公司的特点, 大多数的公司运作的商业服务既为买方(85.4%)也为供应商(81.8%). 大部分买家是做消费品贸易(76%), 而供应商的大部分(70%)是做工业品贸易. 这可能意味着买家的过程是购入材料, 部件和组件从而生产消费品成品. 正如他们对他们与合作伙伴关系的长度的报告表示, 供应商比买家有更长的商业关系. 假设1测试买方-供应方特点对信任的影响. 销售人员的专业度(t=2.070, p<0.05)和权威授权(t=2.328, p<0.05)积极影响买方对供应方的信任. 另一方面, 权威授权(t=2.192, p<0.05)积极影响供应方对买方的信任. 对买方和供应方来说, 权威授权的程度对保持对彼此的信任有关键作用. 假设2测试买卖双方关系特点对信任的影响. 买家倾向于信任供应方, 因为供应方总是尽全力联系买方(t=2.212, p<0.05)这种倾向性在供应方方面也表现得很强(t=2.591, p<0.01). 另一方面, 供应商对买方的信任是由于供应商感知买家与自己的相似性(t=2.702, p<0.01). 这一发现证实了Crosby, Evans, 和Cowles(1990)的研究结果. 他们的结果表明供应方和买方通过商务或私务的定期会议来建立彼此的联系. 假设3测试信任对感知风险的影响. 结果表明无论对买方还是供应方, 信任越低, 感知风险就越大(买方: t =-6.621, p<0.01; 供应方: t=-2.437, p<0.05). 有趣的是, 这一趋势已被证明对买方更强. 这种较高水平的感知风险的一个可能的解释是在商业服务交易中买方通常比供应方感知到更大的风险. 为此, 有必要对供应商对买方实施减少风险的战略. 假设4测试信任对信息搜集. 根据结果, 对供应方和买方, 与预期相反, 信任取决于他们合作伙伴的名誉(买方t=2.929, p<0.01; 供应方t=2.711, p<0.05). 这一发现表明, 具有良好信誉的供应商往往是可信的. 以往的经验并没有显示出任何与买家或供应商信任的重要关系. 假设5测试信任对供应方/买方选择的影响. 与买方不同, 当供应方认为以往与买方的交易重要时, 供应方倾向信任买方(t=2.913 p<0.01). 但是, 本研究并没有现实资源忠诚和买方对供应方的信任之间有显著关系. 假设6测试的是信任对关系绩效的影响. 对买方和供应方, 当财务表现被报告提高时, 他们比较信任他们的合作伙伴(买方: t=2.301, p<0.05;供应方: t=3.692, p<0.01). 有趣的是, 这种趋势在供应方比较明显. 类似的, 当竞争力被报告提高时, 买卖双方比较信任他们的合作伙伴(买方t=3.563, p<0.01 ; 供应方t=3.042, p<0.01). 对供应方来说, 当对买方信任时效率和生产力会提高(t=2.673, p<0.01). 其他绩效指标与信任没有显著关系. 这项研究结果有一定的战略意义. 首先和最重要的是, 以信任为基础的交易对供应商和买家而言都是有益的. 根据研究证实, 通过努力建立和保持相互信任可以使财务表现提高. 同样, 可以通过同样的努力提高竞争力. 第二, 以信任为基础的交易能够减少购买情况中的感知风险. 这对供应商和买家都有启示. 人们普遍认为, 在一个高度参与的采购情况中买家感知到更高的风险. 为了减少风险, 以往的研究已建议供应商制定降低风险的策略. 而本研究的特点是从双边角度关注知觉风险. 换言之, 供应商也容易存在风险, 特别是当他们提供的服务, 需要非常先进的技术, 操作和维护. 因此, 购买者和供应商必须一起密切合作解决问题. 因此, 相互信任在问题解决过程中起着关键作用. 第三, 在这项研究中发现, 销售人员有更多的授权, 他或她越被信任. 这一发现从战术角度看是非常重要的. 建立信任是一个长期的任务, 然而, 当互信尚未开发, 供应商能够通过授权销售人员做出某些决定来克服遇到的问题, 这一结论也适用于供应商.