著者
齊藤 哲 光國 光七郎
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)
巻号頁・発行日
vol.139, no.8, pp.944-951, 2019-08-01 (Released:2019-08-01)
参考文献数
19
被引用文献数
1

Business processes are defined as functions and information relationships between functions in the phase of business requirement definition when enterprise information systems are developed. The function which is defined in the phase of business requirement definition is decomposed into the unit called a program or a module in the lower phase. The description method of the flow chart type such as DFD has been used for the visualization of the decomposition of function conventionally. In recent years, many enterprise information systems are improved by executing Business Process Re-engineering (BPR) or introducing Enterprise Resource Planning (ERP). In this case, the definition of the information relationships between functions is important. The examples utilizing the description method of the matrix type called G-RD are seen to visualize information relationships. Therefore, the comparative experiment is performed by system engineers to visualize the same business processes utilizing DFD and G-RD. In this experiment, system engineers decompose functions and visualize functions and information relationships between functions. And information relationships which are added or changed by the decomposition of functions are measured. As the result, it is proved that G-RD is able to have prevent omissions or errors of information relationships.
著者
本間 達 若松 秀俊
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌. C (ISSN:03854221)
巻号頁・発行日
vol.137, no.10, pp.1329-1339, 2017

<p>Mathematical simulation is utilized to visualize the invisible phenomena, such as distribution of temperature and/or stress in a concerning object, by using properly structuralized nodes on each grid point of the orthogonal coordinate system. Here, the close-packed nodes with same effective radius are set on the vertex of regular tetrahedrons. Thus, the mathematical simulation calculating the interactions among nodes can be appropriately performed on the newly proposed coordinate system, which consists of continuous connection of regular tetrahedrons with six basic lattices. Then, the regular tetrahedron lattice coordinate system is well confirmed for the description of definite nodes having interaction with their neighboring ones.</p>
著者
芝 浩二郎 古屋 保 西 省吾 森 邦彦
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)
巻号頁・発行日
vol.126, no.8, pp.980-989, 2006-08-01
参考文献数
10
被引用文献数
1

We developed a prototype of the automatic go-record system using some image processing techniques. This system is composed of three units. Their units are a 1.10GHz laptop PC, a TV camera, and a pair of switches which tell the system to set a go-stone on the go-board. In this paper, we describe our implemented image processing techniques which are the method to generate a go-coordinates, the method to detect a location of a go-stone, and so on. As a result of the experiment on the prototype system, we confirmed that the correct go-record was generated in a stable indoor lighting condition.
著者
竹田 史章 大松 繁 井上 卓 尾波 宰三 小西 健一
出版者
The Institute of Electrical Engineers of Japan
雑誌
電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)
巻号頁・発行日
vol.112, no.4, pp.249-258, 1992-04-20 (Released:2008-12-19)
参考文献数
10
被引用文献数
1 1

In conventional bill money recognition machines, we develop the recognition algorithm according to the transaction speed and diffierence of various specifications. However, development of the algorithm for the recognition has been based on the trial and error method. Many researchers have reported that neural networks are suitable for pattern recognition because of the ability of selforganization, parallel processing, and generalization. In this paper, we present a new bill money recognition method with neural network and show the effectiveness of the present algorithm compared with the conventional method by discrimination functions. Furthermore, we transform bill money data by FFT into frequency domain to reduce influence of the noise due to conveyed fluctuation. Then we adopt these Fourier coefficients or its amplitudes as input of the neural network. We show that the ability of recognition can be evaluated in detail by introducing a new measure of reliability.
著者
渡部 泰明 小峰 清香 五箇 繁善 佐藤 隆幸 関本 仁 内田 剛
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)
巻号頁・発行日
vol.125, no.8, pp.1179-1184, 2005 (Released:2005-11-01)
参考文献数
8
被引用文献数
2 2

This paper describes an analysis of the close to carrier phase-noise characteristics of the narrow-band Colpitts oscillators. The open-loop impedance, that is, series of the SC-cut resonator and the oscillator active circuit, is calculated using a linear circuit model with a non-linear transistor model. It is shown that the loaded Q can be improved by introducing the resonator filter in the oscillation circuit. Based on the Leeson's model, the near carrier phase-noise is estimated using the calculated Q values. The results corresponded well with the previous experiments. It is also shown that the phase-noise can be exceedingly improved, that is, under -148 dBc/Hz at 10Hz offset, by using resonator filter with high Q.
著者
伊藤 誠悟 河口 信夫
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)
巻号頁・発行日
vol.126, no.10, pp.1212-1220, 2006-10-01
参考文献数
17
被引用文献数
17 10

本論文では,既設の無線LANアクセスポイントと,既存の無線LANアダプタを用いて端末の位置推定を行う手法を提案する。 本手法では,位置推定を行う場所において各無線LANアクセスポイントからの電波強度を事前に測定し,ユーザはそれらを事前モデルとして保持する。 ユーザは事前モデルと現在ユーザが観測できる無線LANアクセスポイントの電波強度を用いて現在位置を推定する。 しかし,屋内環境において無線LANの受信電波強度はマルチパス等の影響により複雑に変化するため,位置推定を行う際に利用するアクセスポイントを適切に選択する必要がある。 本手法においては端末の位置推定時に,アクセスポイントを選択する段階と位置推定を行う段階の2段階に分けることにより,位置推定のために有用な情報を提供するアクセスポイントを選択し,選択されたアクセスポイントの情報を利用して位置推定を行う。 実験の結果,適切なアクセスポイントを選択し位置推定を行うことにより,位置推定精度の向上を確認したので報告する。 加えて,無線LANによる位置依存アプリケーションを紹介する。
著者
川口 弘哲 松本 哲也 竹内 義則 工藤 博章 大西 昇
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)
巻号頁・発行日
vol.130, no.12, pp.2180-2181, 2010-12-01
参考文献数
2

We aim to discover the factors of an unpleasant sound by processing the sound in the frequency domain. The processed sounds have the same amplitude envelope as an unpleasant sound, and consist of only one or two peak frequencies of the original unpleasant sound. Using these sounds, we attempt to specify a frequency band relating to unpleasantness. As a result, the sound with two pair of peak frequencies tends to make subjects feel unpleasant compared with one peak, and subjects feel unpleasant by the sounds having peaks in 2kHz and 9kHz around. Next, we investigate whether the sound becomes unpleasant by adding the amplitude envelope of unpleasant sounds. The result shows that addition of the envelope makes subjects feel unpleasant compared with the carrier alone.
著者
向谷 博明 大屋 英稔 Xu Hua
出版者
The Institute of Electrical Engineers of Japan
雑誌
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)
巻号頁・発行日
vol.125, no.1, pp.67-76, 2005-01-01

This paper considers the robust stabilization of uncertain multimodeling systems. The guaranteed cost control technique is used to choose the design parameter which is included in the control gain. The ε-independent quadratically stabilizing controller is newly proposed. It is shown that if the reduced order algebraic Riccati equations (AREs) have positive definite stabilizing solution then the closed-loop uncertain multimodeling systems with the proposed controller are quadraticaly stable and have the cost bound. To show the effectiveness of the proposed algorithm, numerical example is included.
著者
姜 東植 大松 繁 吉岡 理文 小坂 利寿
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌. C (ISSN:03854221)
巻号頁・発行日
vol.118, no.12, pp.1706-1711, 1998

In this paper, we propose a neuro-classification method of the new and used bills using time-series acoustic data. The technique used here is based on an extension of an adaptive digital filter (ADF) by Widrow and the error back-propagation method. Two-stage ADFs are used to detect the desired acoustic data of bill from noisy input data. In the first stage, superfluous signals are eliminated from input signals and in the next stage, only the desired acoustic data is detected from output signal of the two-stage ADFs. The output signal of two-stage ADFs is transformed into spectral data to produce an input pattern to a neural network (NN). The NN is used to discriminate the new and used bills. It is shown that the experimental result using two-stage ADFs is better than that obtained by using original observation data.
著者
林 健一 長嶋 満宏 蘇原 祥夫 和田 英男 梶谷 淳
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)
巻号頁・発行日
vol.124, no.11, pp.2278-2286, 2004-11-01
参考文献数
6

The low cost improved recognition of an uncooled infrared image processing has been required urgently for the development of high sensitive uncooled sensor like a cooled sensor. In this study, the uncooled infrared image taken by YBaCuO bolometer camera was improved with applying a special low cost image processing systems. The improved image with this processing exhibited not only the edge enhancement in a large contrast area but also the suppression of heat noise in a small contrast area. It is clarified that this improved recognition image processing is easy to realize at low cost, and the demand for this image processing will be expected to grow up as the use of uncooled infrared sensor system increases.
著者
右山 剛 杉村 敦彦 長 篤志 三池 秀敏
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)
巻号頁・発行日
vol.129, no.5, pp.956-962, 2009-05-01
参考文献数
12
被引用文献数
2

Recently, digital cameras are offering technical advantages rapidly. However, the shot image is different from the sight image generated when that scenery is seen with the naked eye. There are blown-out highlights and crushed blacks in the image that photographed the scenery of wide dynamic range. The problems are hardly generated in the sight image. These are contributory cause of difference between the shot image and the sight image. Blown-out highlights and crushed blacks are caused by the difference of dynamic range between the image sensor installed in a digital camera such as CCD and CMOS and the human visual system. Dynamic range of the shot image is narrower than dynamic range of the sight image. In order to solve the problem, we propose an automatic method to decide an effective exposure range in superposition of edges. We integrate multi-step exposure images using the method. In addition, we try to erase pseudo-edges using the process to blend exposure values. Afterwards, we get a pseudo wide dynamic range image automatically.
著者
間普 真吾 平澤 宏太郎 古月 敬之
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)
巻号頁・発行日
vol.127, no.7, pp.1061-1067, 2007-07-01 (Released:2007-09-01)
参考文献数
15
被引用文献数
8 7

Genetic Network Programming (GNP) is an evolutionary computation which represents its solutions using graph structures. Since GNP can create quite compact programs and has an implicit memory function, it has been clarified that GNP works well especially in dynamic environments. In addition, a study on creating trading rules on stock markets using GNP with Importance Index (GNP-IMX) has been done. IMX is a new element which is a criterion for decision making. In this paper, we combined GNP-IMX with Actor-Critic (GNP-IMX&AC) and create trading rules on stock markets. Evolution-based methods evolve their programs after enough period of time because they must calculate fitness values, however reinforcement learning can change programs during the period, therefore the trading rules can be created efficiently. In the simulation, the proposed method is trained using the stock prices of 10 brands in 2002 and 2003. Then the generalization ability is tested using the stock prices in 2004. The simulation results show that the proposed method can obtain larger profits than GNP-IMX without AC and Buy&Hold.
著者
朴 正泌 小澤 誠一 阿部 重夫
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌. C (ISSN:03854221)
巻号頁・発行日
vol.121, no.5, pp.899-905, 2001

A main problem with dynamical associative memories (DAMs) is that when memory patterns are stored, pseudo-memories (false fixed points and limit cycles) are also generated and they hinder proper association of input patterns. To overcome this problem, Hassoun proposed a heuristic method of reducing pseudo-memories. In this method, DAMs are constructed such that a zero vector called &ldquo;ground state&rdquo; as well as stored patterns is stabilized and sparsely activated states (sparse patterns) converge to the ground state. Such dynamical properties of neural networks can be described with linear inequalities, and connection weights of networks are obtained by solving these inequalities using the Ho-Kashyap algorithm. In this paper, we propose an extended Hassoun model in which network dynamics are modified such that dense patterns, mix-ture patterns and inhibition patterns are also converged to the ground state. In simulations, we compare association performance of this extended Hassoun model with conventional associative memory models, and demonstrate the usefulness of our proposed model as a dynamical associative memory.
著者
飯間 等 三宮 信夫
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌. C (ISSN:03854221)
巻号頁・発行日
vol.122, no.3, pp.409-416, 2002
被引用文献数
1

This paper deals with modified scheduling problems in manufacturing systems. Recently optimization is required for not only basic scheduling problems but also scheduling problems modified in such a way that some constraints are added or are removed. Genetic algorithm (GA) is considered to be a promising method for solving the modified scheduling problems, because change of the procedure is small for the modification. In GA the problems can be solved only by adding (removing) the modules related to the added (removed) constraints. In this paper, a module type GA (MTGA) is proposed based on this idea, and the MTGA is designed for solving a mixed problem of machine scheduling and worker allocation. In a factory, both skillful workers and untrained workers work together, and the efficiency of operations depends on the allocation of workers to machines. The effectiveness of the proposed algorithm is investigated through a numerical result for a job-shop scheduling problem.
著者
松田 善臣 名嘉村 盛和 姜 東植 宮城 隼夫
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)
巻号頁・発行日
vol.124, no.7, pp.1507-1514, 2004 (Released:2004-10-01)
参考文献数
18
被引用文献数
2 2

The paper treats an optimal routing problem for sightseeing (ORPS) in which we consider time varying travel time and location value. ORPS is defined on a complete graph in which location values are associated with node weight while travel time depends on edge weight. The aim of the problem is to construct a path with maximal total value under the condition that the total travel time does not exceed a time limit. In our model, the location value and the travel time are given as functions with respect to time. For the case that all the time functions are represented as piece-wise constant, we verify its ΝΡ-completeness.We present an algorithm to find the exact solution based on the backtrack searching and also propose a heuristic algorithm based on the time domain decomposition approach. The heuristic algorithm can lead good quality of approximate solutions, with drastically reduced computation time. To evaluate the algorithms, a computational experiment is given. The experimental results demonstrate that computing time by exact algorithm grow exponentially with the increase in nodes and time limits, whereas the heuristic approach derive approximate solution of 92% quality to the exact one within one second for practical problem size.
著者
米村 恵一 杉浦 彰彦
出版者
The Institute of Electrical Engineers of Japan
雑誌
電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)
巻号頁・発行日
vol.122, no.8, pp.1272-1278, 2002-08-01 (Released:2008-12-19)
参考文献数
10

Recently, because aging is progressing in our country, cerebral disease is becoming a serious problem. Therefore, viewing this problem objectively, we can say support of aging and dementia patients is a very useful research theme. In this time, we examine the drinking condition as one noticing point in a case of carrying out the rank evaluation of dementia. Because it is generally known the condition like dementia by alcohol, dementia is deeply involved with alcohol. In this time's experiment, we examined the condition like dementia by alcohol. We carried out the experiment to observe an internal condition (cognitive ability) and an external condition (expression control ability) for the first stage and second stage in drinking level. First, by assessment of cognitive ability, though decline of cognitive ability by drinking occurs whole brain, it is shown to influence to left-brain in first step. Next, by assessment of expression control ability, we showed AU influenced by drinking in expression's output level. By these 2 experiments, we found out the concrete symptom of the condition like dementia by alcohol. In future, we examine the relationship between the condition like dementia by alcohol and dementia, and then we proceed advancing of rank evaluation of dementia.
著者
松尾 康平 海住 太郎 中園 智晶 渡邉 慶 鈴木 隆文
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)
巻号頁・発行日
vol.136, no.9, pp.1324-1334, 2016-09-01 (Released:2016-09-01)
参考文献数
30

Dual-task paradigm is a behavioral procedure in which subjects are required to perform two independent tasks in parallel, each of which involves a distinct stimulus-response association that leads to a unique goal. Although dual tasks are widely used in human studies, they are seldom used in animals. One such rare case was a rat simultaneous temporal processing (STP) task, in which rats were asked to time two different intervals simultaneously(1). However, there are a few limitations in this paradigm, such that, for example, each of the two component tasks was not clearly associated with a unique stimulus-response association. In this report, in order to better characterize temporal dual-task performance in rats, we developed a modified version of the STP task that was comprised of two clearly-divided component tasks, and equipped our experimental system with a novel video-based motion tracking system. We show that even under this more rigidly controlled dual-task setting, rats are able to time two different intervals virtually without interference, and that our tracking system can simultaneously detect head-direction and body-location of a rat with high accuracy. These results suggest that the present experimental paradigm should be useful for investigating cognitive processes that underlie dual-task performance at both the behavioral and neuronal levels.
著者
服部 正典 大須賀 昭彦 関 俊文 一色 正男 本位田 真一
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)
巻号頁・発行日
vol.123, no.11, pp.2010-2019, 2003-11-01
参考文献数
12
被引用文献数
1

This paper describes a &ldquo;Ubiquitous Personalize Agent&rdquo; and it&rsquo;s application: &ldquo;Shopping assistance service&rdquo; for ubiquitous environments. Ubiquitous personalize agent is realized based on context reasoning technology. It can determine contexts of users by referring a lot of data which can be retrieved from devices in ubiquitous environments. We also have had an experimental trial of this service. In this paper, we state the technology, service, and evaluation on the experimental trial.
著者
孫 悠洛 鎌野 琢也 安野 卓 鈴木 茂行 原田 寛信
出版者
一般社団法人 電気学会
雑誌
電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)
巻号頁・発行日
vol.124, no.10, pp.2148-2154, 2004 (Released:2005-01-01)
参考文献数
32
被引用文献数
2 1

This paper describes the generation of adaptive gait patterns using new Central Pattern Generators (CPGs) including motor dynamic models for a quadruped robot under various environment. The CPGs act as the flexible oscillators of the joints and make the desired angle of the joints. The CPGs are mutually connected each other, and the sets of their coupling parameters are adjusted by genetic algorithm so that the quadruped robot can realize the stable and adequate gait patterns. As a result of generation, the suitable CPG networks for not only a walking straight gait pattern but also rotation gait patterns are obtained. Experimental results demonstrate that the proposed CPG networks are effective to automatically adjust the adaptive gait patterns for the tested quadruped robot under various environment. Furthermore, the target tracking control based on image processing is achieved by combining the generated gait patterns.