• 제목/요약/키워드: binary data

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랜덤 위상변조가 가미된 이진 진폭 데이터 영상의 홀로그래픽 저장 (Holographic s forage of random-phase-modulation-added binary amplitude data)

  • 오용석;신동학;장주석
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2001년도 춘계종합학술대회
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    • pp.489-492
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    • 2001
  • 본 논문에서는 효율적인 홀로그래픽 데이타 저장을 위해, 세기변조를 통한 2차원 이진데이타를 표현함에 있어서 가변적이고 이산적인 랜덤 위상마스크를 함께 사용하는 방법을 연구했다. 가변 위상 마스크는 twisted nematic LCD를 사용해 구현했다.

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A Kernel Approach to Discriminant Analysis for Binary Classification

  • 신양규
    • Journal of the Korean Data and Information Science Society
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    • 제12권2호
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    • pp.83-93
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    • 2001
  • We investigate a kernel approach to discriminant analysis for binary classification as a machine learning point of view. Our view of the kernel approach follows support vector method which is one of the most promising techniques in the area of machine learning. As usual discriminant analysis, the kernel method can discriminate an object most likely belongs to. Moreover, it has some advantage over discriminant analysis such as data compression and computing time.

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Clustering을 통한 Binary CDMA 전송거리 확보 (Increase of Binary CDMA transmission range by using Clustering technique)

  • 최현석;지충원;김정선
    • 한국HCI학회:학술대회논문집
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    • 한국HCI학회 2008년도 학술대회 1부
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    • pp.679-682
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    • 2008
  • 무선 통신에 대한 높은 관심은 관련 기술을 이용하여 실생활에 적용하기 위한 연구로 이어지고 있다. 이러한 무선 통신 기술들 중 근거리 무선 통신 기술인 Binary CDMA(Code Division Multiple Access)기술은 2.4Ghz의 RF영역을 사용하여 데이터를 전송하는 기술이다. 이 기술은 기존의 근거리 무선 통신인 Bluetooth보다 뛰어난 전송거리를 보장하고 있으나, 무선 통신 기술의 공통적인 문제점인 장애물에 의한 신호 감소로 인해, 실제 보장되는 거리보다 짧은 거리의 전송거리가 나타나는 구간이 생기게 된다. 이러한 문제점을 해결하기 위해 본 논문에서는 Clustering을 이용하여 보다 넓은 전송거리를 확보하기 위한 아이디어를 제시한다.

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Assessment of Reliability when Using Diagnostic Binary Ratios of Polycyclic Aromatic Hydrocarbons in Ambient Air PM10

  • Pongpiachan, Siwatt
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권18호
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    • pp.8605-8611
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    • 2016
  • The reliability of using diagnostic binary ratios of particulate carcinogenic polycyclic aromatic hydrocarbons (PAHs) as chemical tracers for source characterisation was assessed by collecting PM10 samples from various air quality observatory sites in Thailand. The major objectives of this research were to evaluate the effects of day and night on the alterations of six different PAH diagnostic binary ratios: An/(An + Phe), Fluo/(Fluo + Pyr), B[a]A/(B[a]A + Chry), B[a]P/(B[a]P + B[e]P), Ind/(Ind + B[g,h,i]P), and B[k]F/Ind, and to investigate the impacts of site-specific conditions on the alterations of PAH diagnostic binary ratios by applying the concept of the coefficient of divergence (COD). No significant differences between day and night were found for any of the diagnostic binary ratios of PAHs, which indicates that the photodecomposition process is of minor importance in terms of PAH reduction. Interestingly, comparatively high values of COD for An/(An + Phe) in PM10 collected from sites with heavy traffic and in residential zones underline the influence of heterogeneous reactions triggered by oxidising gaseous species from vehicular exhausts. Therefore, special attention must be paid when interpreting the data of these diagnostic binary ratios, particularly for cases of low-molecular-weight PAHs.

Interval prediction on the sum of binary random variables indexed by a graph

  • Park, Seongoh;Hahn, Kyu S.;Lim, Johan;Son, Won
    • Communications for Statistical Applications and Methods
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    • 제26권3호
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    • pp.261-272
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    • 2019
  • In this paper, we propose a procedure to build a prediction interval of the sum of dependent binary random variables over a graph to account for the dependence among binary variables. Our main interest is to find a prediction interval of the weighted sum of dependent binary random variables indexed by a graph. This problem is motivated by the prediction problem of various elections including Korean National Assembly and US presidential election. Traditional and popular approaches to construct the prediction interval of the seats won by major parties are normal approximation by the CLT and Monte Carlo method by generating many independent Bernoulli random variables assuming that those binary random variables are independent and the success probabilities are known constants. However, in practice, the survey results (also the exit polls) on the election are random and hardly independent to each other. They are more often spatially correlated random variables. To take this into account, we suggest a spatial auto-regressive (AR) model for the surveyed success probabilities, and propose a residual based bootstrap procedure to construct the prediction interval of the sum of the binary outcomes. Finally, we apply the procedure to building the prediction intervals of the number of legislative seats won by each party from the exit poll data in the $19^{th}$ and $20^{th}$ Korea National Assembly elections.

A Study on Decision Tree for Multiple Binary Responses

  • Lee, Seong-Keon
    • Communications for Statistical Applications and Methods
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    • 제10권3호
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    • pp.971-980
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    • 2003
  • The tree method can be extended to multivariate responses, such as repeated measure and longitudinal data, by modifying the split function so as to accommodate multiple responses. Recently, some decision trees for multiple responses have been constructed by Segal (1992) and Zhang (1998). Segal suggested a tree can analyze continuous longitudinal response using Mahalanobis distance for within node homogeneity measures and Zhang suggested a tree can analyze multiple binary responses using generalized entropy criterion which is proportional to maximum likelihood of joint distribution of multiple binary responses. In this paper, we will modify CART procedure and suggest a new tree-based method that can analyze multiple binary responses using similarity measures.

바이너리 CDMA 기술을 이용한 무선 배전 자동화 시스템의 구현 (Implementation of Wireless Distribution Automation System using Binary CDMA Technology)

  • 권대길;조진웅;홍대기
    • 전기학회논문지P
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    • 제61권4호
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    • pp.239-244
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    • 2012
  • In this paper, we first introduce our own binary CDMA technology. Then we propose a wireless distribution automation system using the binary CDMA technology. The major research items are the binary CDMA distribution automation system, piconet configuration for remote control and monitoring, scheduling for the transmission and reception of data, and ways of applying encryption to protect wireless packet. To verify the possibility of applying wireless transmission to the distribution automation system, we experiment the implemented system in terms of the transmission rate by applying it to a real-world environment.

Multi-Symbol Binary Arithmetic Coding Algorithm for Improving Throughput in Hardware Implementation

  • Kim, Jin-Sung;Kim, Eung Sup;Lee, Kyujoong
    • Journal of Multimedia Information System
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    • 제5권4호
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    • pp.273-276
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    • 2018
  • In video compression standards, the entropy coding is essential to the high performance compression because redundancy of data symbols is removed. Binary arithmetic coding is one of high performance entropy coding methods. However, the dependency between consecutive binary symbols prevents improving the throughput. For the throughput enhancement, a new probability model is proposed for encoding multi-symbols at one time. In the proposed method, multi-symbol encoder is implemented with only adders and shifters, and the multiplication table for interval subdivision of binary arithmetic coding is removed. Compared to the compression ratio of CABAC of H.264/AVC, the performance degradation on average is only 1.4% which is negligible.

Applying intrabinary shock model to various X-ray observation data

  • Sim, Minju;An, Hongjun
    • 천문학회보
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    • 제46권2호
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    • pp.52.1-52.1
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    • 2021
  • Low mass X-ray binary(LMXB) 중 accretion disk가 존재하지 않으며 매우 작은 질량 (1 ≪ M)의 동반성을 가지는 pulsar binary system에서 중성자별과 동반성의 항성풍은 상호작용하여 intrabinary shock(IBS)을 형성한다. 이곳에서 입자들은 상대론적으로 가속되어 싱크로트론 복사를 방출한다고 생각된다. 이 복사는 X-선 영역으로 관측되며 이때 관측된 X-선 궤도 광도곡선은 IBS의 모양에 따라 달라진다. 우리는 IBS의 X-선 복사 과정을 모델화하여 shock의 모양과 내부의 전자 특성을 파악하고, 광학 관측을 통해 얻은 orbital parameter와 비교하며 binary의 geometry를 보다 정확히 이해하고자 한다. 이 발표에서는 다양한 pulsar binary system의 Chandra, XMM 그리고 NuSTAR의 X-선 관측 데이터에 IBS 모델을 적용해보고 IBS와 binary의 geomerty를 분석한 결과를 제시한다.

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수용액에서의 이성분 및 삼성분 염기성 염료의 진주층에 대한 경쟁흡착 (Binary and Ternary Competitive Adsorption of Basic Dyes from Aqueous Solution onto the Conchiolin Layer)

  • 신춘환;송동익
    • 대한환경공학회지
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    • 제28권3호
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    • pp.270-275
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    • 2006
  • 채취한 양식진주를 불순물 제거와 표면표백을 통해 염색이 용이하도록 전처리하였다. 전처리된 양식 진주의 표면은 해수로부터 형성된 경단백질의 일종인 Conchiolin 막으로 덮혀있기 때문에 Conchiolin 층에 흡착이 가능한 염료를 선택하여 상품으로 원하는 색상을 흡착하는 공정이 필요하다. Conchiolin 층에 흡착 가능한 염료들은 Rhodamine 6aG(R6G), Rhodamine B(RB) 및 Methylene Blue(MB) 등의 염기성 염료들이 주류를 이루고 있으며 이들 염기성 염료를 선택하여 각각 이성분 및 삼성분으로 염색용액을 제조하여 경쟁흡착 실험을 수행하였다. 이성분 및 삼성분 경쟁흡착의 친화도는 단일성분 흡착 model 인 Langmuir 혹은 Redlich-Peterson(RP) model과 결합된 ideal adsorbed solution theory(IAST)를 이용하였으며, 흡착자료와 IAST 예측치의 차이를 $R^2$ 및 SSE 값으로 판단하였다. 결과적으로 분급되지 않은 진주층에 대한 R6G와 RB의 경쟁흡착의 경우에는 IAST 예측치는 실험값과 잘 일치하고 있으나, 분말상 진주층의 경우, 높은 농도에서의 RB는 실험치와 예측치가 일치하고 있지 않음을 알 수 있었다. 분급된 진주층의 경우에도 R6G/RB, R6G/MB, MB/RB에서 이성분계 혼합용액의 이성분 경쟁흡착에서 R6G/RB의 경우에만 RB는 잘 일치하지 않음을 확인되었다. 삼성분계의 경우에도 RB를 제외하고는 실험치와 예측치가 잘 일치하고 있었다.