Motoaki MOURI

近年IoTが活用され我々の生活は豊かになっている．IoTで使用される小型デバイスは，通信品質が低くリソースに制限がある．そのため，従来のルーティングプロトコルでは適切な経路構築が困難である．そこでIETFはRPLを提案した．一方で現状のRPLには，経路選択に関して不十分な点が2つ存在する．1つ目は複数の指標を考慮した経路選択ができていない点である。もう1つはネットワーク内に動的ノードが存在する際，通信の信頼性が低下する点である．これを解決するために本研究では，Fuzzy logicによってメトリックを複合させ，複数の指標を考慮したRPLを構築する．さらにメトリックに，経路情報の更新に用いるDIOの回数を導入することで動的ノードに対応させる．

現在，ブログやSNSなど情報の発信が容易になったことに伴い，文書データは日々蓄積されている．文書データが膨大であっても，話題抽出が適切に行われていれば，検索を容易にすることができる．また，テキストマイニング技術によって文書の構成を把握できれば，文書全体を読むことなく必要な部分のみを確認することも可能となる．文書の話題抽出を行う方法として，複数の文書間で比較し，話題に特有な単語を判別する手法が挙げられる．しかし，単一の文書の話題分析には用いることができない．そこで，単一の文書から得られる情報を用いた話題の抽出と推移を確認する．本稿では，文書内の単語の出現傾向に着目し，話題の推移の可視化を行う．

X-ray inspection equipment is often used by the inspection of PCB required high quality. Especially BGA solder-bumps sealed by the LSI package resin are mainly inspected by X-ray. In recent years, miniaturization of the solder-bumps and multi-layering of LSI structure make X-ray inspection indispensable because of the improved quality of industrial products, and improvement in image quality is required much more. Although the conventional technique of the noise suppressed on an inspection image is an addition average processing, the increase in X-ray inspection time is influenced critically. So, in the main subject, the image processing technology which reduces the frame number for addition average processing rather than the conventional technique is proposed. At first, a reference image of the integrous BGA solder-bumps is prepared in order to improve quality of an inspection image. Second, in a low-frequency region, αblend is performed with the correlation coefficient between the power spectrum of an inspection and a reference image. Finally, image quality is improved in real space, and the validity which can reduce the frame number by the proposed technique less than the conventional is examined.

X-ray inspection equipment is often used by the inspection of PCB required high quality. Especially BGA solder-bumps sealed by the LSI package resin are mainly inspected by X-ray. In recent years, miniaturization of the solder-bumps and multi-layering of LSI structure make X-ray inspection indispensable because of the improved quality of industrial products, and improvement in image quality is required much more. Although the conventional technique of the noise suppressed on an inspection image is an addition average processing, the increase in X-ray inspection time is influenced critically. So, in the main subject, the image processing technology which reduces the frame number for addition average processing rather than the conventional technique is proposed. At first, a reference image of the integrous BGA solder-bumps is prepared in order to improve quality of an inspection image. Second, in a low-frequency region, αblend is performed with the correlation coefficient between the power spectrum of an inspection and a reference image. Finally, image quality is improved in real space, and the validity which can reduce the frame number by the proposed technique less than the conventional is examined.

X-ray inspection equipment is often used by the inspection of PCB required high quality. Especially BGA solder-bumps sealed by the LSI package resin are mainly inspected by X-ray. In recent years, miniaturization of the solder-bumps and multi-layering of LSI structure make X-ray inspection indispensable because of the improved quality of industrial products, and improvement in image quality is required much more. Although the conventional technique of the noise suppressed on an inspection image is an addition average processing, the increase in X-ray inspection time is influenced critically. So, in the main subject, the image processing technology which reduces the frame number for addition average processing rather than the conventional technique is proposed. At first, a reference image of the integrous BGA solder-bumps is prepared in order to improve quality of an inspection image. Second, in a low-frequency region, αblend is performed with the correlation coefficient between the power spectrum of an inspection and a reference image. Finally, image quality is improved in real space, and the validity which can reduce the frame number by the proposed technique less than the conventional is examined.

X-ray inspection equipment is often used by the inspection of PCB required high quality. Especially BGA solder-bumps sealed by the LSI package resin are mainly inspected by X-ray. In recent years, miniaturization of the solder-bumps and multi-layering of LSI structure make X-ray inspection indispensable because of the improved quality of industrial products, and improvement in image quality is required much more. Although the conventional technique of the noise suppressed on an inspection image is an addition average processing, the increase in X-ray inspection time is influenced critically. So, in the main subject, the image processing technology which reduces the frame number for addition average processing rather than the conventional technique is proposed. At first, a reference image of the integrous BGA solder-bumps is prepared in order to improve quality of an inspection image. Second, in a low-frequency region, αblend is performed with the correlation coefficient between the power spectrum of an inspection and a reference image. Finally, image quality is improved in real space, and the validity which can reduce the frame number by the proposed technique less than the conventional is examined.

We have been studied saccade-related EEG signal before eye movements to develop Brain Computer Interface. In previous studies, we tried to comfirm relationship between saccadic eye movement and EEG signals recorded in visually guided saccade task(The eye movement in visually duided saccade tasks is not a voluntary eye movement perfectly). In these results, we observed sharply changed EEG signals just before eye movements in occipital lobe. The saccade-related EEG signals have sharp change in right occipital lobe when subjects moves their eyes to right side and these EEG signals have shrp change in left occipital lobe when subject moves their eyes to left side. In this paper, we recorded EEG signals in memory guided saccade task(The eye movement in memory guided saccade tasks is a voluntary eye movement) and comfirmed relationship between EEG signals and brain processing in saccade. As this results, we observed differences of the sharply changed EEG signal just before eye movements between visually guided saccade task and memory guided saccade tasks. Next, in order to focus on another saccade-related EEG signals, we do not use hi-pass filter (cut-off: 4Hz). As this resutls, we observed EEG signals which resemble contingent negative variation.

We have been studied saccade-related EEG signal before eye movements to develop Brain Computer Interface. In previous studies, we tried to comfirm relationship between saccadic eye movement and EEG signals recorded in visually guided saccade task(The eye movement in visually duided saccade tasks is not a voluntary eye movement perfectly). In these results, we observed sharply changed EEG signals just before eye movements in occipital lobe. The saccade-related EEG signals have sharp change in right occipital lobe when subjects moves their eyes to right side and these EEG signals have shrp change in left occipital lobe when subject moves their eyes to left side. In this paper, we recorded EEG signals in memory guided saccade task(The eye movement in memory guided saccade tasks is a voluntary eye movement) and comfirmed relationship between EEG signals and brain processing in saccade. As this results, we observed differences of the sharply changed EEG signal just before eye movements between visually guided saccade task and memory guided saccade tasks. Next, in order to focus on another saccade-related EEG signals, we do not use hi-pass filter (cut-off: 4Hz). As this resutls, we observed EEG signals which resemble contingent negative variation.

We have been studied saccade-related EEG signal before eye movements to develop Brain Computer Interface. In previous studies, we tried to comfirm relationship between saccadic eye movement and EEC signals recorded in visually guided saccade task(The eye movement in visually duided saccade tasks is not a voluntary eye movement perfectly). In these results, we observed sharply changed EEG signals just before eye movements in occipital lobe. The saccade-related EEG signals have sharp change in right occipital lobe when subjects moves their eyes to right side and these EEG signals have shrp change in left occipital lobe when subject moves their eyes to left side. In this paper, we check relationship between number of electrodes and extracting rate

We have been studied saccade-related EEG signal before eye movements to develop Brain Computer Interface. In previous studies, we tried to comfirm relationship between saccadic eye movement and EEC signals recorded in visually guided saccade task(The eye movement in visually duided saccade tasks is not a voluntary eye movement perfectly). In these results, we observed sharply changed EEG signals just before eye movements in occipital lobe. The saccade-related EEG signals have sharp change in right occipital lobe when subjects moves their eyes to right side and these EEG signals have shrp change in left occipital lobe when subject moves their eyes to left side. In this paper, we check relationship between number of electrodes and extracting rate

Our research group have been studied EEG signals related to saccadic eye movements. In previous results, we comfirmed sharply changed EEG signals at occipital lobe. Saccade-related electroencephalogram (EEG) signals have been the subject of application oriented research by our group toward developing prediction system for eye movements. However, in previous results, we detected saccade-related EEG signal by using ensemble averaging method. In order to develop prediction system for eye movements, we must detect saccade-related EEG signals by using single-trial processing. This paper presents extraction rate of saccade-related EEG signals by four ICA algorithms and six window size.

In this research, we try to extract saccade-related independent components in single-trial by independent component analysis (ICA). The ICA is signal processing to separate signals under assumption that each original signals are mutual independent. In order to use the ICA, we try to remove noises and background EEG signal and to extract only saccade-related independent components. In results, we can extract saccade-related independent components in signal-trial by the ICA and we can detect which direction subjects move their eyes to by the separation matrix.

In this research, we try to extract saccade-related independent components in single-trial by independent component analysis (ICA). The ICA is signal processing to separate signals under assumption that each original signals are mutual independent. In order to use the ICA, we try to remove noises and background EEG signal and to extract only saccade-related independent components. In results, we can extract saccade-related independent components in signal-trial by the ICA and we can detect which direction subjects move their eyes to by the separation matrix.