Wed, Jul 11 AM
Chair: Susumu Matsui (Osaka Institute of Technology)
09:30 - 10:20 |
(1)
ASN |
09:30-09:55 |
Application of Precoding for Image Sensor Based Visible Light Communication and its Performance Evaluation in a Stationary Environment |
Satoshi Kamegawa, Takaya Yamazato, Hiraku Okada, Toshiaki Fujii (Nagoya Univ.), Shintaro Arai (Okayama Univ. of Sci.), Tomohiro Yendo (Nagaoka Univ. of Tech.), Koji Kamakura (Chiba Inst. of Tech.) |
(2)
ASN |
09:55-10:20 |
Throughput analysis of WLANs taking into account capture effect |
Takeshi Kanematsu (Chiba Univ.), Yuto Yoshida, Hiroo Sekiya (Chiba Univ.) |
Wed, Jul 11 AM
Chair: Suguru Kameda (Tohoku Univ.)
09:30 - 10:20 |
(3)
RCS |
09:30-09:55 |
Characteristic Improvement Method for Cancellation of Periodic Interference Performing Select Sideband |
Yuya Kimura, Satoshi Denno, Yafei Hou (Okayama Univ.) |
(4)
RCS |
09:55-10:20 |
A Basic Study on Transmission Interference Canceller in HetNet |
Reina Taniguchi, Teruya Fujii, Hideki Omote, Kei Sakaguchi (Tokyo Institute of Tech.) |
| |
10:20-10:30 |
Break ( 10 min. ) |
Wed, Jul 11 AM
Chair: Koji Yamamoto (Kyoto Univ.)
10:30 - 12:10 |
| (5) |
10:30-10:55 |
Random access network with cloud-cooperated interference cancellation using adaptive number of transmit replicas |
Toshiki Nonaka, Takeo Fujii (UEC), Osamu Takyu (Shinshu Univ.), Ohta Mai (Fukuoka Univ.) |
| (6) |
10:55-11:20 |
A New Concept of Autonomous Control in Wireless Distributed Networks Based on Interference Beats of Traveling Waves through Networks |
Masaki Aida (Tokyo Metropolitan Univ.), Chisa Takano (Hiroshima City Univ.), Masayuki Murata (Osaka Univ.) |
| (7) |
11:20-11:45 |
A Study on Wireless Networks to Collect Biogeocenosis Information in a River and Provide on the Web |
Takahiro Fujiwara (HNCT), Jovilyn Fajardo, Takao Moriya (STE) |
| (8) |
11:45-12:10 |
A Vehicle Location Information Sharing System Using LoRa |
Yasunori Owada, Goshi Sato, Katsuhiro Temma, Toshiaki Kuri, Masugi Inoue (NICT) |
| |
12:10-13:10 |
Break ( 60 min. ) |
Wed, Jul 11 PM
Chair: Takahiro Fujiwara (N.I.T. Hakodate College)
13:10 - 14:25 |
(9)
ASN |
13:10-13:35 |
Privacy-conscious Obstacle Detection System using Radio Tomography Technology in Railway |
Satoru Harada, Toshinobu Sakamoto (JR East), Yuichi Igarashi, Ryo Nakano, Masatoshi Takahashi (Hitachi) |
(10)
ASN |
13:35-14:00 |
A Fundamental Approach for Efficient Crowdsourced Multi-view Video Uploading |
Than Than Nu (Osaka Univ), Takuya Fujihashi (Ehime Univ.), Takashi Watanabe (Osaka Univ.) |
(11)
ASN |
14:00-14:25 |
[Encouragement Talk]
Bayesian Optimization for Searching for the Optimal Climate Recipe in Completely Controlled Plant Factory |
Tatsuya Iizuka, Ryo Shigeta, Yoshihiro Kawahara (Tokyo Univ.) |
Wed, Jul 11 PM
13:10 - 14:00 |
(12)
RCC |
13:10-13:35 |
In-Vehicle Radio Communications with Ultra-wideband Signals |
Kenichi Takizawa, Huan-Bang Li (NICT), Tsuneto Kimura, Tadahide Kunitachi (YAZAKI Corp.), Fumihide Kojima (NICT) |
(13)
RCC |
13:35-14:00 |
A note on controller design considering influences of packet loss as input disturbances |
Takashi Ogura, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama (Nagoya Univ.) |
Wed, Jul 11 PM
13:10 - 14:25 |
(14)
NS |
13:10-13:35 |
[Encouragement Talk]
Proposal of Automatic Data Collection and Repository Generation for Statistical Analysis and Visualization of Dark Web Markets |
Takahiro Iwanaga, Akihiro Nakao (The Univ. of Tokyo) |
(15)
NS |
13:35-14:00 |
Throughput Prediction Method based on machine learning in Mobile Networks |
Bo Wei, kenji Kanai, Wataru Kawakami, Jiro Katto (Waseda Univ.) |
(16)
NS |
14:00-14:25 |
Performance of TCP BBR Co-existing with CUBIC TCP on Deep Buffer Networks |
Kanon Sasaki, Naiki Oda, Kouto Miyazawa (Kogakuin Univ.), Satoshi Utsumi (Fukushima Univ.), Saneyasu Yamaguchi (Kogakuin Univ.) |
| |
14:25-14:35 |
Break ( 10 min. ) |
Wed, Jul 11 PM
14:35 - 15:50 |
| (17) |
14:35-15:00 |
An evaluation of propagation loss on wireless physical layer identification |
Taichi Ohtsuji, Tatsuya Soma, Toshiki Takeuchi, Masaki Kitsunezuka, Kazuaki Kunihiro (NEC) |
| (18) |
15:00-15:25 |
IoT Device Identification Based on Similarity Analysis of Communication |
Hirofumi Noguchi, Tatsuya Demizu, Misao Kataoka, Yoji Yamato (NTT) |
| (19) |
15:25-15:50 |
A Fundamental Study on Direction of Arrival Estimation with Deep Learning |
Yuya Kase, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa (Hokkaido Univ.) |
| |
15:50-16:00 |
Break ( 10 min. ) |
Wed, Jul 11 PM
Chair: Eisuke Fukuda (Fujitsu Labs.)
16:00 - 17:40 |
| (20) |
16:00-16:50 |
[Invited Talk]
The Latest Trend of Wireless Communication Technologies for IoT: LPWA and 5G
-- Current and Future of SIGFOX, LoRaWAN, LTE-M, NB-IoT and 5G -- |
Ritsu Tei (Chino) |
| (21) |
16:50-17:40 |
[Invited Talk]
IoT Solution System of Water Environment Infrastructure Facilities
-- Remote Monitoring of Facilities using Wireless Network -- |
Yasunori Sueyoshi, Hitochi Morita, Keoil Jin (Kubota) |
| |
17:40-17:50 |
Break ( 10 min. ) |
Thu, Jul 12 AM
09:30 - 10:45 |
(22)
SR |
09:30-09:55 |
Construction of Time-Space Radio Environment Database using HMM for Cooperative Sensing |
Yuya Aoki, Takeo Fujii (UEC) |
(23)
SR |
09:55-10:20 |
Attack classification method using neural network by analysis of log data of intrusion detection system and investigation for improvement of accuracy |
Tsukasa Mannen, Kohei Shiomoto (TCU) |
(24)
SR |
10:20-10:45 |
Experimental Verification of Frequency-Correlation of Radio Propagation Characteristics for Radio Environment Recognition |
Keita Onose (UEC), Koya Sato (TUS), Kei Inage (TMCIT), Takeo Fujii (UEC) |
Thu, Jul 12 AM
Chair: Koji Yamamoto (Kyoto Univ.)
09:30 - 10:45 |
(25)
RCS |
09:30-09:55 |
Evaluation of Reception Performance Considering Error Vector Magnitude for Downlink Non-Orthogonal Multiple Access |
Kenta Mayama, Kohei Akimoto, Suguru Kameda, Noriharu Suematsu (Tohoku Univ.) |
(26)
RCS |
09:55-10:20 |
Physical Channel Multiplexing Using Symbol Repetition in Every Subframe for Full Duplex |
Mamoru Sawahashi, Hiroki Yamada (Tokyo City Univ.), Yoshihisa Kishiyama (NTT DOCOMO) |
(27)
RCS |
10:20-10:45 |
On Selective MIMO Diversity for Mobile Radio |
Fumiyuki Adachi, Amnart Boonkajay (Tohoku Univ.) |
| |
10:45-10:55 |
Break ( 10 min. ) |
Thu, Jul 12 AM
10:55 - 12:15 |
| (28) |
10:55-12:15 |
[Poster Presentation]
Detection of Visible Light Communication Transmitter by Machine Learning using Time Gradient Feature |
Masahiro Hori, Masayuki Kinoshita, Takaya Yamazato, Hiraku Okada, Toshiaki Fujii (Nagoya Univ.), Koji Kamakura (Chiba Inst. of Tech.), Tomohiro Yendo (Nagaoka Univ. of Tech.), Shintaro Arai (Okayama Univ. of Sci.) |
| (29) |
10:55-12:15 |
[Poster Presentation]
Deep Learning Based RSS Prediction Using RGB-D Camera for mmWave Communications |
Kota Nakashima, Yusuke Koda, Koji Yamamoto, Hironao Okamoto, Takayuki Nishio, Masahiro Morikura (Kyoto Univ.) |
| (30) |
10:55-12:15 |
[Poster Presentation]
Analysis of Multiuser Scheduling Gain in Poisson Cellular Networks |
Koji Yamamoto (Kyoto Univ.) |
| (31) |
10:55-12:15 |
[Poster Presentation]
Proposal of Real-Spatial based data management architecture for heterogeneous service cooperation |
Kentaro Nagao (kyutech), Yuzo Taenaka (NAIST), Akira Nagata (iD), Hitomi Tamura (FIT), Kazuya Tsukamoto (kyutech) |
| (32) |
10:55-12:15 |
[Poster Presentation]
Evaluation method for delay in dividing process and data on network system |
Takeshi Yamada, Koji Hoshino, Kazuhiro Kikuma (NTT) |
| (33) |
10:55-12:15 |
[Poster Presentation]
A Study of Machine Learning in Mobile Edge with Heterogeneous Resources |
Takayuki Nishio (Kyoto Univ.), Ryo Yonetani (The Univ. of Tokyo) |
| (34) |
10:55-12:15 |
[Poster Presentation]
A Examination of GPS Spoofing Defense with Machine-learning |
Tomokazu Fukuda, Koji Ishii (Kagawa Univ.) |
| (35) |
10:55-12:15 |
[Poster Presentation]
Experimental Evaluation of Reinforcement Learning-Based Pedestrian-Aware Predictive Handover for mmWave Networks |
Yusuke Koda, Koji Yamamoto, Takayuki Nishio, Masahiro Morikura (Kyoto Univ.) |
| (36) |
10:55-12:15 |
[Poster Presentation]
Supervised Learning-based Primary Exclusive Region Update Robust Against Imbalanced Data for Spectrum Sharing |
Aogu Yamada, Takayuki Nishio, Masahiro Morikura, Koji Yamamoto (Kyoto Univ.) |
| (37) |
10:55-12:15 |
[Poster Presentation]
Optimal Primary Exclusive Region Design for Cognitive Radio VANETs |
Yuxiang Fu, Keiji Yoshikawa, Shota Yamashita, Koji Yamamoto, Takayuki Nishio, Masahiro Morikura (Kyoto Univ.) |
| (38) |
10:55-12:15 |
[Poster Presentation]
Inter-system interference evaluation in spectrum sharing systems with multiple frequency bands |
Kyouhei Ueda, Shigeru Tomisato, Kazuhiro Uehara (Okayama Univ.) |
| (39) |
10:55-12:15 |
[Poster Presentation]
Detection of Error Tracking Based on Spacial Correlation in Physical Wireless Parameter Conversion Sensor Networks |
Naoya Amano, Osamu Takyu, Keiichiro Shirai (Shinshu Univ.), Takeo Fujii (UEC), Mai Ohta (Fukuoka Univ.), Fumihito Sasamori, Shiro Handa (Shinshu Univ.) |
| (40) |
10:55-12:15 |
[Poster Presentation]
Data Separation with Gradient of Sensing Data in Physical Wireless Parameeter Conversion Networks |
Shuhei Yamasaki, Osamu Takyu, Keiichiro Shirai (Shinshu Unv.), Takeo Fujii (UEC), Mai Ohta (Fukuoka Univ.), Fumihito Sasamori, Shiro Handa (Shinshu Unv.) |
| (41) |
10:55-12:15 |
[Poster Presentation]
A Study on Machine Learning Based Anomaly Detection for a Large Network with Cooperative Edge-Cloud Computing |
Kengo Tajiri, Yasuhiro Ikeda (NTT), Ryoichi Kawahara (Toyo Univ.), Ryoichi Shinkuma (Kyoto Univ.) |
| (42) |
10:55-12:15 |
[Poster Presentation]
A study on efficient Antenna selection based on Spatial Correlation for Adaptive Array Antenna |
Takumi Sakamoto, Kenta Umebayashi (TUAT), Antti Tolli (UOO) |
| |
12:15-13:15 |
Break ( 60 min. ) |
Thu, Jul 12 PM
13:15 - 14:55 |
(43)
NS |
13:15-13:40 |
[Encouragement Talk]
Mobile Application Identification using In-Network Machine Learning |
Masaki Kozuki, Akihiro Nakao (UT) |
(44)
NS |
13:40-14:05 |
Accuracy Evaluations of CNN based Transportation Modes Recognition Using Communication Quality |
Wataru Kawakami, Kenji Kanai, Bo Wei, Jiro Katto (Waseda Univ.) |
(45)
NS |
14:05-14:30 |
A Study on Adaptive Control Interval in Cloud Systems and an Evaluation of Flash Crowd Events |
Yukio Ogawa (Muroran IT), Go Hasegawa, Masayuki Murata (Osaka Univ.) |
(46)
NS |
14:30-14:55 |
Performance Evaluation of Layer 2 Switch with Frame Preemption |
Makoto Kubomi, Yusuke Sakagami, Sachiko Taniguchi, Ryusuke Kawate (Mitsubishi Electric) |
Thu, Jul 12 PM
Chair: Fumiaki Maehara (Waseda Univ.)
13:15 - 14:55 |
(47)
RCS |
13:15-13:40 |
[Invited Lecture]
Technical Trends on MIMO Techniques based on Patent Applications (Part 1) |
Jun Nishimura, Ryuichi Ohta (JPO) |
(48)
RCS |
13:40-14:05 |
[Invited Lecture]
Technical Trends on MIMO Techniques based on Patent Applications (Part 2) |
Ryuichi Ohta, Jun Nishimura (JPO) |
(49)
RCS |
14:05-14:30 |
Outdoor Trial of Beamforming in Ultra-Highly Mobile Environment
-- Downlink Massive MIMO Performance at 28GHz -- |
Kazushi Muraoka, Yuta Takahashi, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO) |
(50)
RCS |
14:30-14:55 |
Outdoor Trial of Beamforming in Ultra-Highly Mobile Environment
-- Uplink Massive MIMO and Handover Performances at 28GHz -- |
Yuta Takahashi, Kazushi Muraoka, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO) |
| |
14:55-15:05 |
Break ( 10 min. ) |
Thu, Jul 12 PM
15:05 - 17:05 |
| (51) |
15:05-17:05 |
[Tutorial Lecture]
Reinforcement Learning: Application and Issues |
Takaki Makino (Google) |
| |
17:05-17:15 |
Break ( 10 min. ) |
Thu, Jul 12 PM
Chair: Susumu Matsui (Osaka Institute of Technology)
17:15 - 18:05 |
| (52) |
17:15-18:05 |
[Invited Talk]
Towards Realizing Ambient Sensing in Advanced Mobility Society |
Yoh Shiraishi (Future Univ. Hakodate) |
| |
18:05-18:30 |
Break ( 25 min. ) |
Fri, Jul 13 AM
09:30 - 10:45 |
(53)
NS |
09:30-09:55 |
[Encouragement Talk]
Trends of New Application Fields of Mobile Edge Computing |
Takamitsu Iwai, Akihiro Nakao (UTokyo) |
(54)
NS |
09:55-10:20 |
[Encouragement Talk]
Vehicle control system with multi-layered edge servers for cooperative driving
-- Coordination with the autonomous and remote control -- |
Kengo Sasaki, Satoshi Makido (TCRDL), Akihiro Nakao (UT) |
(55)
NS |
10:20-10:45 |
Cooperative Location Aquisition of Mobile Nodes by Measurement of Moving Distance and Change of Observation Directions |
Masaaki Namekata, Hiroaki Higaki (Tokyo Denki Univ.) |
Fri, Jul 13 AM
Chair: Satoru Yokono (Japan Radio)
09:30 - 10:45 |
(56)
RCS |
09:30-09:55 |
Experimental evaluation of an optical wireless MIMO system with baseband modulation |
Fabien Corona, Hirotoshi Sugiura, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama (Nagoya Univ.) |
(57)
RCS |
09:55-10:20 |
A Study on DPD Configuration for Beamforming Transmitter |
Suguru Habu, Yasushi Yamao (UEC), Hiroyoshi Ishikawa, Toru Maniwa (Fujitsu Lab.) |
(58)
RCS |
10:20-10:45 |
Outdoor Experiments of Integrated Access and Backhaul Using 39 GHz Band |
Masashi Iwabuchi, Jun Tsuboi, Yoshihisa Kishiyama (NTT DOCOMO), Tingjian Tian, Guangmei Ren, Liang Gu, Yang Cui, Terufumi Takada (Huawei) |
Fri, Jul 13 AM
09:30 - 10:45 |
(59)
SR |
09:30-09:55 |
Measurement Results in Unlicensed Frequency Band Employing LoRa/LoRa WAN Module |
Ryoya Aoki, Nobuhiko Miki (Kagawa Univ.) |
(60)
SR |
09:55-10:20 |
Interference-based Graph Coloring Method using Non-linear Oscillator |
Syunsuke Nakano, Kei Inage (TMCIT) |
(61)
SR |
10:20-10:45 |
Network Selection Scheme Using Positioning Information for Heterogeneous Wireless System
-- Evaluation of Large-Size Data Transmission Delay Time of Traffic Relay -- |
Ono Kento, Ono Takahiro, Akimoto Kouhei, Kameda Suguru, Suematsu Noriharu (Tohoku Univ.) |
| |
10:45-10:55 |
Break ( 10 min. ) |
Fri, Jul 13 AM
10:55 - 12:35 |
(62)
NS |
10:55-11:20 |
Strictly Prioritized Transmission of Urgent Data Based on Channel Reservation in WSNs |
Tsubasa Inoue, Yosuke Tanigawa, Hideki Tode (Osaka Prefecture Univ.) |
(63)
NS |
11:20-11:45 |
A Simple Backoff Scheme for Full Duplex MAC protocols in Wireless LANs |
Shota Sakakura, Chikara Fujimura, Kosuke Sanada, Kazuo Mori (Mie Univ.) |
(64)
NS |
11:45-12:10 |
A Multi-User ACK Frame Aggregation Method for LoRaWAN |
Yohei Hasegawa (NEC Corp.), Kazuya Suzuki (Akita Prefectural Univ.), Toshio Tonouchi (NEC Corp.) |
(65)
NS |
12:10-12:35 |
Performance Evaluation of Maximum Transmission Rate Control for Promoting Autonomous User Mobility with Analysis and Simulation |
Tomoya Sugii, Takuji Tachibana (Univ. of Fukui) |
| |
12:35-12:45 |
Break ( 10 min. ) |
Fri, Jul 13 AM
Chair: Hiraku Okada (Nagoya Univ.)
10:55 - 12:35 |
(66)
RCS |
10:55-11:20 |
Performance Evaluation Based on Proportional Fair Criteria in Small Cell Environments Employing Multiple Bands |
Nobuhiko Miki, Takaaki Kazumoto, Yusaku Kanehira (Kagawa Univ.) |
(67)
RCS |
11:20-11:45 |
Computational Capability of MEC & UE and Wireless Channel Condition Based Resource Allocation for Data Processing Time Minimization |
Ryuji Kobayashi, Koichi Adachi (UEC) |
(68)
RCS |
11:45-12:10 |
Using Carriers for Secondary User Transmission in Underlay Cognitive Radio Wireless Networks |
Ousmane Zeba, Shunsuke Saruwatari, Takashi Watanabe (Osaka University) |
(69)
RCS |
12:10-12:35 |
Power Saving of Ground Terminals in UAV-BS Wireless Communication Network |
Lumbantoruan Hendrik, Koichi Adachi (UEC) |
| |
12:35-13:35 |
Break ( 60 min. ) |
Fri, Jul 13 PM
Chair: Homare Murakami (NICT)
13:35 - 15:40 |
| (70) |
13:35-14:00 |
Interference Management for Millimeter-Wave Mesh Backhaul Networks |
Makoto Nakamura, Gia Khanh Tran, Kei Sakaguchi (Tokyo Tech) |
| (71) |
14:00-14:25 |
Theoretical Analysis of Data Collection Performance of p-persistent CSMA-based Wireless Sensor Networks employing Wake-up Receiver |
Junya Shiraishi, Hiroyuki Yomo (Kansai Univ.) |
| (72) |
14:25-14:50 |
Acquisition Method for Consistent Observation Time of Sensor Data in Wireless Sensor Networks |
Ayako Arao, Hiroaki Higaki (Tokyo Denki Univ.) |
| (73) |
14:50-15:15 |
High Performance Wireless Ad-Hoc Networks with Network Coding Communication based on Collision Detection of Control Messages |
Yusuke Aoi, Hiroaki Higaki (Tokyo Denki Univ.) |
| (74) |
15:15-15:40 |
An Experimental Study on Communications and Interference Characteristics of 920MHz Radios in Factory Environments |
Ryota Bingo, Ryota Ikeuchi, Hiroyuki Yomo (Kansai Univ.) |
| |
15:40-15:50 |
Break ( 10 min. ) |
Fri, Jul 13 PM
15:50 - 17:55 |
(75)
NS |
15:50-16:15 |
Optimal Network Configuration for Cascading Failure in D2D-based Social Networking Service |
Hanami Yokoi, Takuji Tachibana (Univ. of Fukui) |
(76)
NS |
16:15-16:40 |
Performance Evaluations of a Video Distribution Method balancing High Picture Quality and Bitrate Reduction |
Tatsuya Nagashima, Yusuke Sakamoto, Masaru Takeuchi, Kenji Kanai, Jiro Katto (Waseda Univ) |
(77)
NS |
16:40-17:05 |
A Proposal of Pub/Sub-based IoT Service Function Chaining Architecture |
Keigo Ogawa, Kenji Kanai, Jiro Katto, Hidenori Nakazato (Waseda Univ.) |
(78)
NS |
17:05-17:30 |
On-site Evaluation of Software Cellular based MEC with Downlink Slicing Method |
Koichiro Amemiya (Fujitsu/UTokyo), Yuko Akiyama, Kazunari Kobayashi, Yoshio Inoue (Fujitsu), Shu Yamamoto, Akihiro Nakao (UTokyo) |
(79)
NS |
17:30-17:55 |
On the Improvement of Service Quality by Edge Computing in Network-oriented Mixed Reality Application |
Shiori Takagi, Junichi Kaneda, Shin'ichi Arakawa, Masayuki Murata (Osaka Univ.) |
Fri, Jul 13 PM
Chair: Satoshi Suyama (NTT DoCoMo)
15:50 - 17:30 |
(80)
RCS |
15:50-16:15 |
A Fundamental Study on Large-Scale SCMA Signal Detection Using GaBP |
Renjie Li, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara (Hokkaido Univ.) |
(81)
RCS |
16:15-16:40 |
Aggregate-Compression-Aided Subcarrier IQ Index Modulation with Discreteness-Aware Approximate Message Passing |
Kazuya Ohira, Takanori Hara, Koji Ishibashi (The Univ. of Electro-Communications) |
(82)
RCS |
16:40-17:05 |
A Study on Application Effect of Delay Spread Estimation Method based on Level Crossing Rate to Ordering Cost Reduction Method in MU-MIMO-OFDM THP |
Yukiko Shimbo, Hirofumi Suganuma, Fumiaki Maehara (Waseda Univ.) |
(83)
RCS |
17:05-17:30 |
On Reduced-Complexity Coded MIMO Spatial Multiplexing System based on Matched-Filter Detecter and CRC-Assisted Interference Cancellation |
Kentaro Masukawa, Hideki Ochiai (Yokohama Natl. Univ.) |
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