• Title/Summary/Keyword: Combined Patterns

Search Result 632, Processing Time 0.023 seconds

Design of a Portable Electronic Tongue System using Fuzzy C-Means Algorithm (Fuzzy C-Means Algorithm을 이용한 휴대용 전자혀 시스템 설계)

  • Kim, Jeong-Do;Kim, Dong-Jin;Ham, Yu-Kyung;Jung, Young-Chang;Yoon, Chul-Oh
    • Journal of Sensor Science and Technology
    • /
    • v.13 no.6
    • /
    • pp.446-453
    • /
    • 2004
  • A portable electronic tongue (E-Tongue) system using an array of ion-selective electrode (ISE) and personal digital assistants (PDA) for recognizing and analyzing food and drink have been designed. By the employment of PDA, the complex algorithm such as fuzzy c-means algorithm (FCMA) could be used in E-Tongue, PUMA could iteratively solve the cluster centers of pre-determined standard patterns. And the membership between the standard patterns and unknown pattern could be analyzed easily by the present E-Tongue combined with PDA.

Development of Energy Demand Models for Hospitals (병원 건물의 에너지 부하모델 개발)

  • Park, Hwa-Choon;Chung, Mo
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
    • /
    • v.21 no.11
    • /
    • pp.636-642
    • /
    • 2009
  • Energy consumption data are surveyed and measured to develop energy demand models for hospital buildings as part of a complete package. Daily consumption profiles for electricity, heating, cooling and hot water are surveyed for 14 carefully chosen hospitals to establish energy demand patterns for a time span of a year. Then the hourly demand patterns of the 4 loads are field-measured for different seasons and statistically analyzed to provide higher resolution models. Used in conjunction with energy demand models for other types of buildings, the high resolution of 8760 hour energy demand models for a hospital for a typical year will serve as building blocks for the comprehensive model that allows the estimation of the combined loads for arbitrary mixtures of buildings.

Taxonomic Considerations on the Bast Fibres in the Genus Sida L. (Malvaceae) in Nigeria

  • Oladele, F.A.
    • Journal of Plant Biology
    • /
    • v.29 no.2
    • /
    • pp.135-143
    • /
    • 1986
  • The distributional pattern of the bast fibres strands or bundles in the stems of Sida species represented in Nigeria is studied. Three major patterns of arrangement are recognized, namely aggregation of fibre strands into units with wedge-shaped, or triangular, rectangular, rhomboidal, square and trapezoid outlines; serial arrangement of fibre strands into rings or circular, ovoid, semi-circular or crescentic rows; and intermediate pattern in which both fibre strands-aggregates and serial rows of strands patterns are combined. The first pattern is found in S. linifolia, S. urens and S. scabrida, the second in S. cordifolia, S. pilosa, S. ovata, S. rhombifolia and S. spinosa, and the third in S. garckeana, and S. acuta. A dichotomous key based on these features is presented. Dimensional characteristics of the bast fibre cells are also given.

  • PDF

Pre-Estimation of Soil Diffusion Caused by the Sea Construction (해상공사에 따른 토사확산예측)

  • 신문섭
    • Journal of Korean Society of Coastal and Ocean Engineers
    • /
    • v.8 no.2
    • /
    • pp.204-214
    • /
    • 1996
  • The purpose of this study is to find a variation in traveling patterns of soil and soil diffusion due to construction of the sea dike in Saemangum coastal sea region. Water circulations are calculated diagnostically from the observed water temperature, salinity and wind data, and tidal residual current. Three-dimensional movements of injected particles due to currents, turbulence and sinking velocity are tracked by the Euler-Lagrangian method. Calculated a variation in traveling patterns of soil and soil diffusion due to construction of the sea dike deposited mostly from estuarine area of the Geum River to Gokunsan coastal sea region. This results are believed to be the combined effect of coastal circulation.

  • PDF

Fatigue damage monitoring and evolution for basalt fiber reinforced polymer materials

  • Li, Hui;Wang, Wentao;Zhou, Wensong
    • Smart Structures and Systems
    • /
    • v.14 no.3
    • /
    • pp.307-325
    • /
    • 2014
  • A newly developed method based on energy is presented to study the damage pattern of FRP material. Basalt fiber reinforced polymer (BFRP) is employed to monitor the damage under fatigue loading. In this study, acoustic emission technique (AE) combined with scanning electronic microscope (SEM) technique is employed to monitor the damage evolution of the BFRP specimen in an approximate continuous scanning way. The AE signals are analyzed based on the wavelet transform, and the analyses are confirmed by SEM images. Several damage patterns of BFRP material, such as matrix cracking, delamination, fiber fracture and their combinations, are identified through the experiment. According to the results, the cumulative energy (obtained from wavelet coefficients) of various damage patterns are closely related to the damage evolution of the BFRP specimens during the entire fatigue tests. It has been found that the proposed technique can effectively distinguish different damage patterns of FRP materials and describe the fatigue damage evolution.

Fashion Cultural Product Designs Using Artifacts Excavated from the Iksan Mireuksaji

  • Kim, Hye Kyung;Hong, Jeong Hwa
    • Fashion & Textile Research Journal
    • /
    • v.16 no.4
    • /
    • pp.511-519
    • /
    • 2014
  • The aim of this study is to develop fashion cultural product designs in order to promote the Iksan region by using motifs from the Mireuksaji, Iksan's most representative archeological site of Baekje culture. The fashion cultural products designs developed by applying cultural resources can be effective at enhancing our cultural identity. Adobe Illustrator CS4 and Adobe Photoshop CS4 were used to reconstruct motifs from the Sumakse tiles and the bronze horse figure in the Mireuksaji Museum. The Iksan brand slogan "Amazing Iksan" was combined with the bronze horse to emphasize the local cultural identity. The motifs from the Mireuksaji were modified and stylized to make different patterns and these patterns were repeated in various ways to be applied to necktie and scarf designs. The motifs for necktie designs were double-row chrysanthemum tiles and phoenix tiles, and the motifs for scarf designs were the double-row lotus tiles and the bronze horse artifacts. Different colorways were chosen and the value of each color was displayed in the CMYK percentages. As a result, eight necktie designs and twelve scarf designs were proposed. The motifs and patterns developed in this study can be used to introduce Iksan's distinct history as the birthplace of Baekje culture. It is also expected that the result of this study can advance the promotion of Korean traditional culture internationally.

Radiation study of a Wire Antenna Mounted on the Complex Structure Using the FDTD Method (FDTD 기법을 이용한 복잡한 구조물 위에 부착된 안테나의 방사특성 해석)

  • Kim, Byoung-Nam;Park, Seong-Ook
    • Journal of the Korean Institute of Telematics and Electronics D
    • /
    • v.36D no.12
    • /
    • pp.1-10
    • /
    • 1999
  • In this paper, we analyzed the radiation patterns of a monopole antenna mounted on the complex structures by using FDTD method associated with 3-D PML absorbing boundary condition. In order to validate the proposed FDTD code, the radiation patterns of monopole antenna mounted on cylinders and spheres were compared with the exact solutions of $Carter^{[1]}$ and $Harrington^{[2]}$. For all case considered, the predicted radiation pattern exhibited excellent agreement with exact solution. To be able to model the more complex structures, the proposed FDTD methods are combined with BRL-CAD. And this procedures is applied to predict the radiation patterns of a wire antenna attached to the top of a Blackhawk helicopter.

  • PDF

Evaluation of Histograms Local Features and Dimensionality Reduction for 3D Face Verification

  • Ammar, Chouchane;Mebarka, Belahcene;Abdelmalik, Ouamane;Salah, Bourennane
    • Journal of Information Processing Systems
    • /
    • v.12 no.3
    • /
    • pp.468-488
    • /
    • 2016
  • The paper proposes a novel framework for 3D face verification using dimensionality reduction based on highly distinctive local features in the presence of illumination and expression variations. The histograms of efficient local descriptors are used to represent distinctively the facial images. For this purpose, different local descriptors are evaluated, Local Binary Patterns (LBP), Three-Patch Local Binary Patterns (TPLBP), Four-Patch Local Binary Patterns (FPLBP), Binarized Statistical Image Features (BSIF) and Local Phase Quantization (LPQ). Furthermore, experiments on the combinations of the four local descriptors at feature level using simply histograms concatenation are provided. The performance of the proposed approach is evaluated with different dimensionality reduction algorithms: Principal Component Analysis (PCA), Orthogonal Locality Preserving Projection (OLPP) and the combined PCA+EFM (Enhanced Fisher linear discriminate Model). Finally, multi-class Support Vector Machine (SVM) is used as a classifier to carry out the verification between imposters and customers. The proposed method has been tested on CASIA-3D face database and the experimental results show that our method achieves a high verification performance.

Size Tunable Nano Patterns Using Nanosphere Lithography with Ashing and Annealing Effect (나노 구체 리소그라피법에 Ashing과 Annealing 효과를 적용하여 크기조절 가능한 나노패턴의 제조)

  • Lee, Yu-Rim;Alam, Mahbub;Kim, Jin-Yeol;Jung, Woo-Gwang;Kim, Sung-Dai
    • Korean Journal of Materials Research
    • /
    • v.20 no.10
    • /
    • pp.550-554
    • /
    • 2010
  • This work presents a fabrication procedure to make large-area, size-tunable, periodically different shape metal arrays using nanosphere lithography (NSL) combined with ashing and annealing. A polystyrene (PS, 580 ${\mu}m$) monolayer, which was used as a mask, was obtained with a mixed solution of PS in methanol by multi-step spin coating. The mask morphology was changed by oxygen RIE (Reactive Ion Etching) ashing and temperature processing by microwave heating. The Au or Pt deposition resulted in size tunable nano patterns with different morphologies such as hole and dots. These processes allow outstanding control of the size and morphology of the particles. Various sizes of hole patterns were obtained by reducing the size of the PS sphere through the ashing process, and by increasing the size of the PS sphere through annealing treatment, which resulted in tcontrolling the size of the metallic nanoparticles from 30 nm to 230 nm.

Utilization of Planned Routes and Dead Reckoning Positions to Improve Situation Awareness at Sea

  • Kim, Joo-Sung;Jeong, Jung Sik;Park, Gyei-Kark
    • International Journal of Fuzzy Logic and Intelligent Systems
    • /
    • v.14 no.4
    • /
    • pp.288-294
    • /
    • 2014
  • Understanding a ship's present position has been one of the most important tasks during a ship's voyage, in both ancient and modern times. Particularly, a ship's dead reckoning (DR) has been used for predicting traffic situations and collision avoidance actions. However, the current system that uses the traditional method of calculating DR employs the received position and speed data only. Therefore, it is not applicable for predicting navigation within the harbor limits, owing to the frequent changes in the ship's course and speed in this region. In this study, planned routes were applied for improving the reliability of the proposed system and predicting the traffic patterns in advance. The proposed method of determining the dead reckoning position (DRP) uses not only the ships' received data but also the navigational patterns and tracking data in harbor limits. The Mercator sailing formulas were used for calculating the ships' DRPs and planned routes. The data on the traffic patterns were collected from the automatic identification system and analyzed using MATLAB. Two randomly chosen ships were analyzed for simulating their tracks and comparing the DR method during the timeframes of the ships' movement. The proposed method of calculating DR, combined with the information on planned routes and DRPs, is expected to contribute towards improving the decision-making abilities of operators.