• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2005년도 추계종합학술대회
• /
• pp.1225-1228
• /
• 2005

This paper compares the differences between Java virtual machine and x86 processor in data transfer viewpoint. Memory models of JVM and x86 are analyzed and the data transfer paths are identified. As all operations must be performed to the values on operand stack, a great many data transfer operation is unavoidable in JVM. We also lists the number of data transfer operations necessary for executing some typical high-level language statements including assignment, arithmetic, conditional, and iterative statements.

• 한국수학사학회지
• /
• 제9권1호
• /
• pp.12-31
• /
• 1996

주판은 지난 수천년동안 인류가 애용했던 산판(abacus)의 일종으로서, 휴대용 계산기(Calculator)가 보편화되기 전까지 덧셈이나 곱셈 등의의 사칙연산을 수행하는 데에 사용된 대표적인 산술도구이다. 한편, 자동화를 위한 단순한 계산기계로부터 발전되어 온 컴퓨터는 오늘날 디지털 시대를 주도하면서 불과 수십년만에 우리의 삶과 생각을 완전히 새로운 모습으로 바꾸어 놓은 또 하나의 산술도구인 것이다. 본 논문에서는 주판에 적용된 여러 가지 산술원리들을 역사적으로 살펴본뒤, 산술의 발전과 컴퓨터 사이에 어떠한 상관관계가 있는 지를 살펴보고자 한다. 이를 위하여, 새로운 산술원리를 컴퓨터에 도입하게 된 동기와 파급효과를 주판의 경우와 대비하여 설명하고, 현재 진행중인 컴퓨터 산술(computer arithmetic)분야의 연구동향을 토대로 미래의 컴퓨터를 전망한다.

• International Journal of Contents
• /
• 제3권2호
• /
• pp.40-43
• /
• 2007

This paper proposed a new modular inverse algorithm based on the right-shifting binary Euclidean algorithm. For an n-bit numbers, the number of operations for the proposed algorithm is reduced about 61.3% less than the classical binary extended Euclidean algorithm. The proposed algorithm implementation shows substantial reduction in computation time over Galois field GF(p).

• Journal of Electrical Engineering and information Science
• /
• 제3권2호
• /
• pp.131-138
• /
• 1998

We derive a back-propagation learning algorithm of fuzzy neural networks using fuzzy operations, which preserves the shapes of fuzzy numbers, in order to utilize fuzzy if-then rules as well as numerical data in the learning of neural networks for classification problems and for fuzzy control problems. By introducing the shape preseving fuzzy operation into a neural network, the proposed network simplifies fuzzy arithmetic operations of fuzzy numbers with exact result in learning the network. And we illustrate our approach by computer simulations on numerical examples.

• Journal of information and communication convergence engineering
• /
• 제8권3호
• /
• pp.317-322
• /
• 2010

This paper presents an algorithm generating inverse element over finite fields GF($3^m$), and constructing method of inverse element generator based on inverse element generating algorithm. An inverse computing method of an element over GF($3^m$) which corresponds to a polynomial over GF($3^m$) with order less than equal to m-1. Here, the computation is based on multiplication, square and cube method derived from the mathematics properties over finite fields.

• 호남수학학술지
• /
• 제31권4호
• /
• pp.611-632
• /
• 2009

The orders in a quaternion algebra play a central role of the theory of Hecke operators. In this paper, we study the arithmetic properties of optimal embeddings of orders in a quaternion algebra over a dyadic local field.

• 한국멀티미디어학회:학술대회논문집
• /
• 한국멀티미디어학회 2002년도 춘계학술발표논문집(상)
• /
• pp.22-26
• /
• 2002

일반적으로 멀티미디어 하드웨어는 지금까지의 각종 데이터 처리보다는 훨씬 방대한 데이터 양, 최적의 데이터 압축 및 복원, 초고속 전송, 암호화 및 복호화 등의 복합적이고 고기능의 기술이 요구되고 있다. 따라서 본 논문에서는 이러한 점들을 수행 할 수 있는 방법으로 최근에 그 활용도가 높아지고 있는 임베이드 컴퓨터시스템에 기반을 둔 고효율 연산시스템 구성의 한 가지 방법을 제안하였다.

• 융합신호처리학회 학술대회논문집
• /
• 한국신호처리시스템학회 2000년도 하계종합학술대회논문집
• /
• pp.1-4
• /
• 2000

In this paper, A useful nonlinear function for the RBF(Radial Basis Function) equalization is proposed. This proposed function need not calculate an exponential function that is generally used for conventional RBF equalizer and uses the only four rules of arithmetic. Therefore the computational requirement for the RBF equalizer with the proposed function is decreased. As a computer simulation result, the equalizer with the proposed function effectively reduce nonlinear intersymbol interference, caused by nonlinear communication channel.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2008년도 춘계종합학술대회 A
• /
• pp.225-228
• /
• 2008

In this paper, we presented our implementation of a counter mode AES based on Virtex4 FPGA. Our design exploits three advanced features: composite field arithmetic SubByte, efficient MixColumn transformation, and On-the-Fly Key-Scheduling for fully pipelined architecture. By pipelining the composite field implementation of the S-box, the area cost is reduced to average 17 percent. By designing the On-the-Fly key scheduling, we implemented an efficient key-expander module which is specialized for a pipelined architecture.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2002년도 ITC-CSCC -1
• /
• pp.281-284
• /
• 2002

Error resilience for image coding is an important component of multimedia communication system. Error resilience schemes address loss recovery from the compression perspective. Multiple description coding (MDC) is one of the error resilience techniques promising for robust video transmission. It is the way to achieve tradeoff description such as scalar quantization, correlating transform and the quantized frame expansion. In this paper, we consider Multiple Description Scalar Quantization (MDSQ) to wavelet domain. Conventional MDSQ schemes considered description with equal weights in each sub-bands. But, we can see that the each sub-bands is unequal contribution to whole image quality. Therefore, we experiment the multiple design MDSQ table to make probability of zero index high, which gives high efficiency in arithmetic symbol coder. We also compare our proposed method with the conventional methods and show improved performance in terms of redundancy-rate-distortion.