Publisher: Springer-Verlag (Total: 2570 journals)

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Showing 1 - 200 of 2570 Journals sorted alphabetically
3D Printing in Medicine     Open Access   (Followers: 4)
3D Research     Hybrid Journal   (Followers: 21, SJR: 0.222, CiteScore: 1)
4OR: A Quarterly J. of Operations Research     Hybrid Journal   (Followers: 11, SJR: 0.825, CiteScore: 1)
AAPS J.     Hybrid Journal   (Followers: 29, SJR: 1.118, CiteScore: 4)
AAPS PharmSciTech     Hybrid Journal   (Followers: 9, SJR: 0.752, CiteScore: 3)
Abdominal Radiology     Hybrid Journal   (Followers: 21, SJR: 0.866, CiteScore: 2)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 4, SJR: 0.439, CiteScore: 0)
Academic Psychiatry     Full-text available via subscription   (Followers: 31, SJR: 0.53, CiteScore: 1)
Academic Questions     Hybrid Journal   (Followers: 9, SJR: 0.106, CiteScore: 0)
Accreditation and Quality Assurance: J. for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 33, SJR: 0.316, CiteScore: 1)
Acoustical Physics     Hybrid Journal   (Followers: 11, SJR: 0.359, CiteScore: 1)
Acoustics Australia     Hybrid Journal   (Followers: 1, SJR: 0.232, CiteScore: 1)
Acta Analytica     Hybrid Journal   (Followers: 7, SJR: 0.367, CiteScore: 0)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1, SJR: 0.675, CiteScore: 1)
Acta Biotheoretica     Hybrid Journal   (Followers: 3, SJR: 0.284, CiteScore: 1)
Acta Diabetologica     Hybrid Journal   (Followers: 19, SJR: 1.587, CiteScore: 3)
Acta Endoscopica     Hybrid Journal   (Followers: 1)
acta ethologica     Hybrid Journal   (Followers: 4, SJR: 0.769, CiteScore: 1)
Acta Geochimica     Hybrid Journal   (Followers: 7, SJR: 0.24, CiteScore: 1)
Acta Geodaetica et Geophysica     Hybrid Journal   (Followers: 3, SJR: 0.305, CiteScore: 1)
Acta Geophysica     Hybrid Journal   (Followers: 11, SJR: 0.312, CiteScore: 1)
Acta Geotechnica     Hybrid Journal   (Followers: 7, SJR: 1.588, CiteScore: 3)
Acta Informatica     Hybrid Journal   (Followers: 5, SJR: 0.517, CiteScore: 1)
Acta Mathematica     Hybrid Journal   (Followers: 12, SJR: 7.066, CiteScore: 3)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2, SJR: 0.452, CiteScore: 1)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 6, SJR: 0.379, CiteScore: 1)
Acta Mathematica Vietnamica     Hybrid Journal   (SJR: 0.27, CiteScore: 0)
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal   (SJR: 0.208, CiteScore: 0)
Acta Mechanica     Hybrid Journal   (Followers: 25, SJR: 1.04, CiteScore: 2)
Acta Mechanica Sinica     Hybrid Journal   (Followers: 5, SJR: 0.607, CiteScore: 2)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 8, SJR: 0.576, CiteScore: 2)
Acta Meteorologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.638, CiteScore: 1)
Acta Neurochirurgica     Hybrid Journal   (Followers: 7, SJR: 0.822, CiteScore: 2)
Acta Neurologica Belgica     Hybrid Journal   (Followers: 3, SJR: 0.376, CiteScore: 1)
Acta Neuropathologica     Hybrid Journal   (Followers: 5, SJR: 7.589, CiteScore: 12)
Acta Oceanologica Sinica     Hybrid Journal   (Followers: 3, SJR: 0.334, CiteScore: 1)
Acta Physiologiae Plantarum     Hybrid Journal   (Followers: 4, SJR: 0.574, CiteScore: 2)
Acta Politica     Hybrid Journal   (Followers: 19, SJR: 0.605, CiteScore: 1)
Activitas Nervosa Superior     Hybrid Journal   (SJR: 0.147, CiteScore: 0)
Adaptive Human Behavior and Physiology     Hybrid Journal   (Followers: 1)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 9, SJR: 0.103, CiteScore: 0)
ADHD Attention Deficit and Hyperactivity Disorders     Hybrid Journal   (Followers: 28, SJR: 0.72, CiteScore: 2)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 10)
Administration and Policy in Mental Health and Mental Health Services Research     Partially Free   (Followers: 21, SJR: 1.005, CiteScore: 2)
Adolescent Research Review     Hybrid Journal   (Followers: 2)
Adsorption     Hybrid Journal   (Followers: 5, SJR: 0.703, CiteScore: 2)
Advanced Composites and Hybrid Materials     Hybrid Journal  
Advanced Fiber Materials     Full-text available via subscription  
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 4, SJR: 0.698, CiteScore: 1)
Advances in Astronautics Science and Technology     Hybrid Journal  
Advances in Atmospheric Sciences     Hybrid Journal   (Followers: 40, SJR: 0.956, CiteScore: 2)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 23, SJR: 0.812, CiteScore: 1)
Advances in Contraception     Hybrid Journal   (Followers: 3)
Advances in Data Analysis and Classification     Hybrid Journal   (Followers: 57, SJR: 1.09, CiteScore: 1)
Advances in Gerontology     Partially Free   (Followers: 8, SJR: 0.144, CiteScore: 0)
Advances in Health Sciences Education     Hybrid Journal   (Followers: 35, SJR: 1.64, CiteScore: 2)
Advances in Manufacturing     Hybrid Journal   (Followers: 3, SJR: 0.475, CiteScore: 2)
Advances in Neurodevelopmental Disorders     Hybrid Journal  
Advances in Polymer Science     Hybrid Journal   (Followers: 49, SJR: 1.04, CiteScore: 3)
Advances in Therapy     Hybrid Journal   (Followers: 5, SJR: 1.075, CiteScore: 3)
Aegean Review of the Law of the Sea and Maritime Law     Hybrid Journal   (Followers: 8)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2, SJR: 0.517, CiteScore: 1)
Aerobiologia     Hybrid Journal   (Followers: 3, SJR: 0.673, CiteScore: 2)
Aerosol Science and Engineering     Hybrid Journal  
Aerospace Systems     Hybrid Journal   (Followers: 1)
Aerotecnica Missili & Spazio : J. of Aerospace Science, Technologies & Systems     Hybrid Journal  
Aesthetic Plastic Surgery     Hybrid Journal   (Followers: 11, SJR: 0.825, CiteScore: 1)
African Archaeological Review     Hybrid Journal   (Followers: 20, SJR: 0.862, CiteScore: 1)
Afrika Matematika     Hybrid Journal   (Followers: 3, SJR: 0.235, CiteScore: 0)
Ageing Intl.     Hybrid Journal   (Followers: 7, SJR: 0.39, CiteScore: 1)
Aggiornamenti CIO     Hybrid Journal   (Followers: 1)
Aging Clinical and Experimental Research     Hybrid Journal   (Followers: 3, SJR: 0.67, CiteScore: 2)
Agricultural Research     Hybrid Journal   (Followers: 7, SJR: 0.276, CiteScore: 1)
Agriculture and Human Values     Open Access   (Followers: 15, SJR: 1.173, CiteScore: 3)
Agroforestry Systems     Open Access   (Followers: 20, SJR: 0.663, CiteScore: 1)
Agronomy for Sustainable Development     Open Access   (Followers: 19, SJR: 1.864, CiteScore: 6)
AI & Society     Hybrid Journal   (Followers: 9, SJR: 0.227, CiteScore: 1)
AIDS and Behavior     Hybrid Journal   (Followers: 17, SJR: 1.792, CiteScore: 3)
Air Quality, Atmosphere & Health     Hybrid Journal   (Followers: 5, SJR: 0.862, CiteScore: 3)
Akupunktur & Aurikulomedizin     Full-text available via subscription   (Followers: 1)
Algebra and Logic     Hybrid Journal   (Followers: 7, SJR: 0.531, CiteScore: 0)
Algebra Universalis     Hybrid Journal   (Followers: 2, SJR: 0.583, CiteScore: 1)
Algebras and Representation Theory     Hybrid Journal   (Followers: 1, SJR: 1.095, CiteScore: 1)
Algorithmica     Hybrid Journal   (Followers: 9, SJR: 0.56, CiteScore: 1)
Allergo J.     Full-text available via subscription   (Followers: 1, SJR: 0.234, CiteScore: 0)
Allergo J. Intl.     Hybrid Journal   (Followers: 2)
Alpine Botany     Hybrid Journal   (Followers: 5, SJR: 1.11, CiteScore: 3)
ALTEX : Alternatives to Animal Experimentation     Open Access   (Followers: 2)
AMBIO     Hybrid Journal   (Followers: 10, SJR: 1.569, CiteScore: 4)
American J. of Cardiovascular Drugs     Hybrid Journal   (Followers: 17, SJR: 0.951, CiteScore: 3)
American J. of Community Psychology     Hybrid Journal   (Followers: 30, SJR: 1.329, CiteScore: 2)
American J. of Criminal Justice     Hybrid Journal   (Followers: 9, SJR: 0.772, CiteScore: 1)
American J. of Cultural Sociology     Hybrid Journal   (Followers: 19, SJR: 0.46, CiteScore: 1)
American J. of Dance Therapy     Hybrid Journal   (Followers: 7, SJR: 0.181, CiteScore: 0)
American J. of Potato Research     Hybrid Journal   (Followers: 3, SJR: 0.611, CiteScore: 1)
American J. of Psychoanalysis     Hybrid Journal   (Followers: 22, SJR: 0.314, CiteScore: 0)
American Sociologist     Hybrid Journal   (Followers: 16, SJR: 0.35, CiteScore: 0)
Amino Acids     Hybrid Journal   (Followers: 7, SJR: 1.135, CiteScore: 3)
AMS Review     Partially Free   (Followers: 4)
Analog Integrated Circuits and Signal Processing     Hybrid Journal   (Followers: 11, SJR: 0.211, CiteScore: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 6, SJR: 0.536, CiteScore: 1)
Analysis in Theory and Applications     Hybrid Journal   (Followers: 1)
Analysis of Verbal Behavior     Hybrid Journal   (Followers: 6)
Analytical and Bioanalytical Chemistry     Hybrid Journal   (Followers: 32, SJR: 0.978, CiteScore: 3)
Anatomical Science Intl.     Hybrid Journal   (Followers: 3, SJR: 0.367, CiteScore: 1)
Angewandte Schmerztherapie und Palliativmedizin     Hybrid Journal  
Angiogenesis     Hybrid Journal   (Followers: 3, SJR: 2.177, CiteScore: 5)
Animal Cognition     Hybrid Journal   (Followers: 23, SJR: 1.389, CiteScore: 3)
Annales françaises de médecine d'urgence     Hybrid Journal   (Followers: 1, SJR: 0.192, CiteScore: 0)
Annales Henri Poincaré     Hybrid Journal   (Followers: 3, SJR: 1.097, CiteScore: 2)
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4, SJR: 0.438, CiteScore: 0)
Annali dell'Universita di Ferrara     Hybrid Journal   (SJR: 0.429, CiteScore: 0)
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1, SJR: 1.197, CiteScore: 1)
Annals of Biomedical Engineering     Hybrid Journal   (Followers: 19, SJR: 1.042, CiteScore: 3)
Annals of Combinatorics     Hybrid Journal   (Followers: 4, SJR: 0.932, CiteScore: 1)
Annals of Data Science     Hybrid Journal   (Followers: 13)
Annals of Dyslexia     Hybrid Journal   (Followers: 11, SJR: 0.85, CiteScore: 2)
Annals of Finance     Hybrid Journal   (Followers: 35, SJR: 0.579, CiteScore: 1)
Annals of Forest Science     Hybrid Journal   (Followers: 7, SJR: 0.986, CiteScore: 2)
Annals of Global Analysis and Geometry     Hybrid Journal   (Followers: 1, SJR: 1.228, CiteScore: 1)
Annals of Hematology     Hybrid Journal   (Followers: 15, SJR: 1.043, CiteScore: 2)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 14, SJR: 0.413, CiteScore: 1)
Annals of Microbiology     Hybrid Journal   (Followers: 13, SJR: 0.479, CiteScore: 2)
Annals of Nuclear Medicine     Hybrid Journal   (Followers: 4, SJR: 0.687, CiteScore: 2)
Annals of Operations Research     Hybrid Journal   (Followers: 11, SJR: 0.943, CiteScore: 2)
Annals of Ophthalmology     Hybrid Journal   (Followers: 14)
Annals of PDE     Hybrid Journal  
Annals of Regional Science     Hybrid Journal   (Followers: 9, SJR: 0.614, CiteScore: 1)
Annals of Software Engineering     Hybrid Journal   (Followers: 13)
Annals of Solid and Structural Mechanics     Hybrid Journal   (Followers: 11, SJR: 0.239, CiteScore: 1)
Annals of Surgical Oncology     Hybrid Journal   (Followers: 17, SJR: 1.986, CiteScore: 4)
Annals of Telecommunications     Hybrid Journal   (Followers: 9, SJR: 0.223, CiteScore: 1)
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1, SJR: 1.495, CiteScore: 1)
Antonie van Leeuwenhoek     Hybrid Journal   (Followers: 5, SJR: 0.834, CiteScore: 2)
Apidologie     Hybrid Journal   (Followers: 5, SJR: 1.22, CiteScore: 3)
APOPTOSIS     Hybrid Journal   (Followers: 9, SJR: 1.424, CiteScore: 4)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 3, SJR: 0.294, CiteScore: 1)
Applications of Mathematics     Hybrid Journal   (Followers: 3, SJR: 0.602, CiteScore: 1)
Applied Biochemistry and Biotechnology     Hybrid Journal   (Followers: 43, SJR: 0.571, CiteScore: 2)
Applied Biochemistry and Microbiology     Hybrid Journal   (Followers: 19, SJR: 0.21, CiteScore: 1)
Applied Categorical Structures     Hybrid Journal   (Followers: 4, SJR: 0.49, CiteScore: 0)
Applied Composite Materials     Hybrid Journal   (Followers: 53, SJR: 0.58, CiteScore: 2)
Applied Entomology and Zoology     Partially Free   (Followers: 7, SJR: 0.422, CiteScore: 1)
Applied Geomatics     Hybrid Journal   (Followers: 3, SJR: 0.733, CiteScore: 3)
Applied Geophysics     Hybrid Journal   (Followers: 10, SJR: 0.488, CiteScore: 1)
Applied Intelligence     Hybrid Journal   (Followers: 15, SJR: 0.6, CiteScore: 2)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 4, SJR: 0.319, CiteScore: 1)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 10, SJR: 0.886, CiteScore: 1)
Applied Mathematics - A J. of Chinese Universities     Hybrid Journal   (Followers: 1, SJR: 0.17, CiteScore: 0)
Applied Mathematics and Mechanics     Hybrid Journal   (Followers: 5, SJR: 0.461, CiteScore: 1)
Applied Microbiology and Biotechnology     Hybrid Journal   (Followers: 68, SJR: 1.182, CiteScore: 4)
Applied Physics A     Hybrid Journal   (Followers: 10, SJR: 0.481, CiteScore: 2)
Applied Physics B: Lasers and Optics     Hybrid Journal   (Followers: 26, SJR: 0.74, CiteScore: 2)
Applied Psychophysiology and Biofeedback     Hybrid Journal   (Followers: 8, SJR: 0.519, CiteScore: 2)
Applied Research in Quality of Life     Hybrid Journal   (Followers: 12, SJR: 0.316, CiteScore: 1)
Applied Solar Energy     Hybrid Journal   (Followers: 22, SJR: 0.225, CiteScore: 0)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 6, SJR: 0.542, CiteScore: 1)
Aquaculture Intl.     Hybrid Journal   (Followers: 26, SJR: 0.591, CiteScore: 2)
Aquarium Sciences and Conservation     Hybrid Journal   (Followers: 2)
Aquatic Ecology     Hybrid Journal   (Followers: 38, SJR: 0.656, CiteScore: 2)
Aquatic Geochemistry     Hybrid Journal   (Followers: 3, SJR: 0.591, CiteScore: 1)
Aquatic Sciences     Hybrid Journal   (Followers: 14, SJR: 1.109, CiteScore: 3)
Arabian J. for Science and Engineering     Hybrid Journal   (Followers: 5, SJR: 0.303, CiteScore: 1)
Arabian J. of Geosciences     Hybrid Journal   (Followers: 2, SJR: 0.319, CiteScore: 1)
Archaeological and Anthropological Sciences     Hybrid Journal   (Followers: 22, SJR: 1.052, CiteScore: 2)
Archaeologies     Hybrid Journal   (Followers: 13, SJR: 0.224, CiteScore: 0)
Archiv der Mathematik     Hybrid Journal   (Followers: 1, SJR: 0.725, CiteScore: 1)
Archival Science     Hybrid Journal   (Followers: 70, SJR: 0.745, CiteScore: 2)
Archive for History of Exact Sciences     Hybrid Journal   (Followers: 7, SJR: 0.186, CiteScore: 1)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3, SJR: 0.909, CiteScore: 1)
Archive for Rational Mechanics and Analysis     Hybrid Journal   (SJR: 3.93, CiteScore: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 6, SJR: 0.79, CiteScore: 2)
Archives and Museum Informatics     Hybrid Journal   (Followers: 179, SJR: 0.101, CiteScore: 0)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 6, SJR: 1.41, CiteScore: 5)
Archives of Dermatological Research     Hybrid Journal   (Followers: 7, SJR: 1.006, CiteScore: 2)
Archives of Environmental Contamination and Toxicology     Hybrid Journal   (Followers: 14, SJR: 0.773, CiteScore: 2)
Archives of Gynecology and Obstetrics     Hybrid Journal   (Followers: 19, SJR: 0.956, CiteScore: 2)
Archives of Microbiology     Hybrid Journal   (Followers: 10, SJR: 0.644, CiteScore: 2)
Archives of Orthopaedic and Trauma Surgery     Hybrid Journal   (Followers: 10, SJR: 1.146, CiteScore: 2)
Archives of Osteoporosis     Hybrid Journal   (Followers: 2, SJR: 0.71, CiteScore: 2)
Archives of Sexual Behavior     Hybrid Journal   (Followers: 11, SJR: 1.493, CiteScore: 3)
Archives of Toxicology     Hybrid Journal   (Followers: 18, SJR: 1.541, CiteScore: 5)
Archives of Virology     Hybrid Journal   (Followers: 5, SJR: 0.973, CiteScore: 2)
Archives of Women's Mental Health     Hybrid Journal   (Followers: 17, SJR: 1.274, CiteScore: 3)
Archivio di Ortopedia e Reumatologia     Hybrid Journal  
Archivum Immunologiae et Therapiae Experimentalis     Hybrid Journal   (Followers: 2, SJR: 0.946, CiteScore: 3)
ArgoSpine News & J.     Hybrid Journal  
Argumentation     Hybrid Journal   (Followers: 6, SJR: 0.349, CiteScore: 1)
Arid Ecosystems     Hybrid Journal   (Followers: 3, SJR: 0.2, CiteScore: 0)
Arkiv för Matematik     Hybrid Journal   (Followers: 1, SJR: 0.766, CiteScore: 1)
arktos : The J. of Arctic Geosciences     Hybrid Journal  
Arnold Mathematical J.     Hybrid Journal   (Followers: 1, SJR: 0.355, CiteScore: 0)
Arthropod-Plant Interactions     Hybrid Journal   (Followers: 2, SJR: 0.839, CiteScore: 2)
Arthroskopie     Hybrid Journal   (Followers: 1, SJR: 0.131, CiteScore: 0)
Artificial Intelligence and Law     Hybrid Journal   (Followers: 12, SJR: 0.937, CiteScore: 2)
Artificial Intelligence Review     Hybrid Journal   (Followers: 25, SJR: 0.833, CiteScore: 4)
Artificial Life and Robotics     Hybrid Journal   (Followers: 10, SJR: 0.226, CiteScore: 0)
Asia Europe J.     Hybrid Journal   (Followers: 4, SJR: 0.504, CiteScore: 1)
Asia Pacific Education Review     Hybrid Journal   (Followers: 12, SJR: 0.479, CiteScore: 1)
Asia Pacific J. of Management     Hybrid Journal   (Followers: 17, SJR: 1.185, CiteScore: 2)

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Similar Journals
Journal Cover
Artificial Life and Robotics
Journal Prestige (SJR): 0.226
Number of Followers: 10  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1614-7456 - ISSN (Online) 1433-5298
Published by Springer-Verlag Homepage  [2570 journals]
  • Correction to: Evaluation of visual image for remotely controlled ship
    • Abstract: The article Evaluation of visual image for remotely controlled ship, written by Ai Hoshino, Ayako Umeda, Takumi Nishina, Hidemasa Kimura, Katsuya Hakozaki, Tsuyoshi Ode and Etsuro Shimizu, was originally published electronically on the publisher’s internet portal (currently SpringerLink) on 27 January 2020 with open access.
      PubDate: 2020-02-13
       
  • Dual-arm robot teleoperation support with the virtual world
    • Abstract: This paper describes the construction of an operator support system for teleoperation of dual-arm robots in the real world and the virtual world. The robot simulator Choreonoid was implemented to create a virtual space. We focus on dual-arm robot teleoperation in particular because it is difficult for the operator to operate a dual arm with one controller. In the verification experiment for usability, through the use of questionnaires and statistical analysis, we show that it is possible to reduce the risks involved in dual-arm operation for a novice teleoperator by comparing the case when the virtual space was confirmed with when it was not.
      PubDate: 2020-02-12
       
  • Adaptive tracking controller for hexacopters with a wind disturbance
    • Abstract: In this paper, we propose an adaptive trajectory tracking control scheme for hexacopters with a wind disturbance. Using conventional controllers, position and attitude of hexacopters cannot be controlled independently. Using tilted rotors, it is expected that the problem of conventional controllers can be overcome. Therefore, we will develop an adaptive trajectory tracking controller for hexacopters with tilted rotors. The developed controller can ensure good control performance even if there exist uncertainties and unknown wind disturbances. Finally, to confirm the usefulness of the proposed controller, numerical simulations are carried out.
      PubDate: 2020-02-01
       
  • A design of EPIC type processor based on MIPS architecture
    • Abstract: This paper proposes an EPIC (Explicitly Parallel Instruction Computing Architecture) type processor based on MIPS. VLIW processors can execute multiple instructions simultaneously, but due to dependency of instructions, it is often impossible to execute maximum parallel execution. As a result, program contains many NOP instructions. EPIC processor can reduce NOP instructions by changing number of instructions to be executed simultaneously. To implement EPIC type processor, five bit field is embedded in the machine instruction code. For comparison, a 5-stage pipeline processor (basic processor), and a Very Long Instruction Word (VLIW) processor are designed. The proposed processors are described in hardware description language (VHDL) and implemented using FPGA. Operations are confirmed by software Tera Term. Processors are evaluated for instruction parallelism and program size using bubble sort program. It is confirmed that the proposed processor is 1.9 times faster than the basic processor. In addition, the program size of the proposed processor is 64 bytes, the basic processor is 56 bytes, and the VLIW processor is 80 bytes.
      PubDate: 2020-02-01
       
  • Flexible manipulator inspired by octopi: advantages of the pulling
           mechanism
    • Abstract: In this study, we focus on flexible manipulators made of silicone. In conventional works, various flexible manipulators have been proposed. Usually, these manipulators are driven by air pressure. By expanding some parts of a finger, pushing force is generated to bend the finger. In contrast, most real creatures use a pulling force to move their bodies. In our previous works, we developed a flexible manipulator using pulling mechanism that generate octopus-like behavior. However, advantages of the pulling mechanism were not demonstrated enough. In this paper, to confirm the advantages of the proposed pulling mechanism, we develop two manipulators of the same size: one uses the conventional pushing mechanism, and the other uses the proposed pulling mechanism. The goal of this study is to explore the advantages of the developed manipulator with the pulling mechanism by comparing it to the conventional manipulator with the pushing mechanism. Experiments are conducted to compare their adaptive behaviors.
      PubDate: 2020-02-01
       
  • Improving controller performance for modeling two-person artificial
           wrestling by underestimating basins of attraction
    • Abstract: This study proposes a preprocessing method that overcomes the misprediction problems in the intelligent motion controllers (IMCs) of two-person wrestling models. In our previous study, the competitive problems were solved on a coupled inverted pendula model, in which an intelligent controller produced the desired final states by exerting impulsive forces on each pendulum. The final states were inferred from a look-up table (LUT) that stores the dynamic correspondences from the initial to the final states. In a numerical investigation, we demonstrated that the observed performance degradation resulted from mispredictions caused by the limited resolution of the LUT. We conjectured that these mispredictions occur near the basin boundaries of the desirable final states. In the present study, we first derive a simple algorithm that removes the basin boundary points from the LUT. We then show that the resulting controller largely reduces the number of mispredictions, but renders the controller overconservative. We hence propose an adaptive algorithm that removes only the boundary points causing the noted mispredictions. Our second algorithm successfully derives a less conservative controller and improves the overall control performance without increasing the resolution of the LUT, implying that the performance of such a competitive IMC can depend on tiny changes in the a priori knowledge of the system dynamics.
      PubDate: 2020-02-01
       
  • Model-based motion control for underwater vehicle-manipulator systems with
           one of the three types of servo subsystems
    • Abstract: This paper deals with a motion control scheme for underwater robots equipped with manipulators. In general, for each robot, its manipulator is directly driven by electric motors with position sensors such as encoders, whereas its robot body is propelled by marine thrusters with position sensors such as inertial measurement units. It has been pointed out in the literature that for this type of underwater robots, its robot body control is more challenging than its manipulator control, because the robot body has much larger inertia, and many more inaccurate position sensors and actuators than the manipulator. Therefore, it may be practically difficult to accurately control the motion of the robot body, even if an advanced control scheme with good performance is implemented in the controller of the robot body. In this paper, we develop a model-based motion controller for the manipulator under the condition that the robot body is independently controlled by a motion controller with poor performance. Its features are to design the manipulator controller in consideration of the dynamics of the robot body including the marine thrusters as well as those of the manipulator, and to be applicable to underwater robots equipped with one of the three types of servo systems (i.e., a voltage-controlled, a torque-controlled, and a velocity-controlled servo system). Some stability properties of the control system were theoretically ensured in the stability analysis. Furthermore, these results were supported by those obtained in numerical simulations.
      PubDate: 2020-02-01
       
  • Relationship between sexual attractiveness and heart rate variability in
           heterosexual men observing photos and self-introduction movies of women
    • Abstract: In recent years, the problem of declining birthrate has occurred, and how to increase the working-age population has been discussed as a problem to be tackled immediately. The rise in the unmarried rate also contributes to a decline in the birth rate. To solve these problems, you need a way to choose a partner appropriately. In this study, we investigated the relationship between heart rate variability (HRV) and sexual attractiveness while heterosexual men observed the photos and self-introduction movies of women. We measured the indicators of HRV, including low-frequency (LF) and high-frequency (HF) HRV, by computing R–R intervals of the heartbeat waveform. We also demonstrated the time-varying transition of HRV parameters during the self-introduction movies. We found that higher attractiveness evaluation scores were proportional to the transition of LF/HF. The LF/HF value increased when subjects watched videos of females who had been judged as having high attractiveness.
      PubDate: 2020-02-01
       
  • The large-scale parallelization of the Boids model on the K computer and
           the heterogeneous multi-processing unit
    • Abstract: While attempting the parallelization of multiagent systems, a load imbalance often slows down the calculation. Hirokawa et al. presented a multilevel hierarchy of parallelism to mitigate the load-imbalance problem of the Boids model using a pseudo-quadruple arithmetic technique. In this paper, we modify the hierarchies of parallelization for both the K computer and a heterogeneous multiprocessing (HMP) unit, and evaluate the performance of the proposed solutions on these systems. We observed that the parallelization can decrease the negative effects of a load imbalance. Furthermore, we discovered that the power consumption can be effectively controlled by calculating the load and that the simultaneous use of both high-performance cores and low-energy cores slows down the calculations on the HMP unit. Parallelization has been reported to have the potential for enabling the completion of simulations in real time and to have the ability to evaluate up to 3000 billion agents using the K computer.
      PubDate: 2020-02-01
       
  • Characteristics of fractal cellular automata constructed from linear rules
    • Abstract: Cellular automata (CAs) have played a significant role in the study of complex systems. Recently, the recursive estimation of neighbors (REN) algorithm was proposed to extend a CA rule with a unit rule radius to rules with larger radii. This framework enables the construction of non-uniform CAs comprising cells that follow different CA rules. A non-uniform CA, referred to as fractal CA (F-CA), which comprises fractally arranged cells, inherits certain characteristics of basic CAs, including pattern replicability and time-reversibility of linear rules. In this paper, F-CAs based on linear rules, particularly the elementary CA #90 and #150, and life-like CA B1357S1357 and B1357S02468 are investigated. Cells in the F-CAs of #90 and B1357S1357 are separated into groups by their rule radius and each group has an independent lifetime. The explicitly constructed inverse rule of F-CA of #150 is more complex than that of F-CA. The complexity of the F-CA of B1357S02468 and its inverse CA is demonstrated by image scrambling. The F-CAs can be applied to encoding and decoding processes for encryption systems.
      PubDate: 2020-02-01
       
  • Constructing observational learning agents using self-organizing maps
    • Abstract: Observational learning is a form of social learning whose theory proposes that new behaviors can be acquired through observing and imitating others. We employed Kohonen self-organizing maps to create observational learning agents to model the real-world process of observational learning. Real-world observational learning is a process that occurs through constantly changing nature and imperfect observation. In this study, we use observational learning agents to conduct a multiagent simulation of a cleanup problem comprising the chained tasks of picking up trash and subsequently discarding it. The results indicate that the constructed observational learning agents produce new emergent behaviors under changing, imperfect observation. Furthermore, the agents demonstrated the best performance when observing others to a moderate degree.
      PubDate: 2020-02-01
       
  • The effects of population size and information update rates on the
           emergent patterns of cooperative clusters in a large-scale social particle
           swarm model
    • Abstract: We study the impact of network size in the context of interactions within social network services (SNS) on cooperation among its users, as well as that of the speed of information update about other neighbors during interaction, using an enhanced version of a swarm model that uses prisoner’s dilemma as social interaction strategy and that models users’ interactions through kinematics. We focus on the speed of information update about social environments and study the relationships between the resulting patterns of cooperation in different information update rates. We observed the large variations among emerging many cooperative clusters in size, speed, and cooperation rate in the large population. Moreover, cooperation was more promoted when the information update rate was high, in contrast to low update rate where the population converged to a few large clusters with many wandering defectors.
      PubDate: 2020-02-01
       
  • Reproduction of human dynamic stability in cooperation with human
           controller model
    • Abstract: We investigate the cooperative behavior between our previously proposed human controller model (HCM) and a human operator. In our previous study, we constructed our HCM by which the behavior of human’s individual balancing control can be accurately reproduced. In this study, we examine how accurately our HCM reproduce the dynamic stability of human behavior in a cooperative balancing task performed by a pair of our HCM and a human operator. To this end, the largest Lyapunov exponents (LLEs) of their balancing errors are estimated. Then, the ratios of LLE of our HCM to that of the human operator are calculated. These ratios are compared with those obtained by a conventional controller, indicating that the dynamic stabilities of the human operators are more accurately reproduced by our HCM than the conventional controller.
      PubDate: 2020-02-01
       
  • Relationship  between mechanisms of blood pressure change and facial skin
           temperature distribution
    • Abstract: Hypertension causes cerebrovascular and cardiovascular diseases. To help prevent this, early detection requires continuous monitoring of blood pressure in daily life, which must be measured without contact. We previously proposed a noncontact technique for measuring blood pressure in which we evaluated the relationship between the variation in blood pressure caused by the cardiac-dominant pattern and facial skin temperature distribution using independent component analysis and multiple regression analysis. The mechanism of blood pressure change is roughly classified into cardiac-dominant patterns and vascular-dominant patterns. An elucidation of the relationship between these patterns and facial skin temperature distribution is the objective of this study. Two tests resulting in cardiac-dominant and vascular-dominant patterns were conducted. These common and different features related to each mechanism of BP change in each subject were then evaluated. The results of the tests show that similar features were extracted from the nasal region and contrasting feature quantities were extracted from the other facial regions. Hence, individual models were constructed for estimating blood pressure using the common features related to both mechanisms. A high coefficient of determination was obtained from these models, suggesting that models for estimating blood pressure caused by both mechanisms can be constructed using the proposed approach.
      PubDate: 2020-02-01
       
  • Improved analysis for skin color separation based on independent component
           analysis
    • Abstract: The conventional skin color separation method suffers from the severe limitation that the input skin image must have no shading component and must have substantial variation in the pigment density distribution, simultaneously. We therefore propose an improved method, which uses two input skin images instead of one. In this improved method, one input image has no shading component and the other has substantial variation in pigment density distribution. To verify the effect of our method, we took images of four subjects and separated them into pigment components. We then compared the independence evaluation value of the separated signals extracted using our method and that of the conventional method. The results show that we obtain separated signals that have a better independence evaluation value by our method than by the conventional method.
      PubDate: 2020-02-01
       
  • A study of a gravity compensation system for the spacecraft prototype test
           by using multi-robot system
    • Abstract: In our research, we proposed a system using multi-robot as a gravity compensation system for a ground test of a spacecraft with a deployable structure. The advantage of the system is its low cost and versatility. When the robots support the beam at the nodes, we can expect to simulate the free vibration of the space structure using the proposed system under gravity. In this study, supporting a uniform, flexible beam with vibration was first implemented to verify the performance of the proposed system. Then we investigated the performance of the system applying to the mock-up model of a spacecraft with a deployable structure as a demonstration.
      PubDate: 2020-02-01
       
  • Evaluation of task difficulty based on fluctuation characteristics in
           writing task
    • Abstract: Control of voluntary movements is a dual structure of cognitive and physical controls. Cognitive control involves attentional resources, whereas physical control does not. In this study, we evaluated the dependency on attentional resources while learning to perform physical exercises using the relationship between the attentional resources and fluctuations in body movements. The physical exercise to be learned is the process of writing certain Chinese characters by hand. Detrended fluctuation analysis was applied to the analysis of body movement fluctuations in this study. We herein propose an index that qualitatively evaluates fluctuations locally on a timescale and includes a general scaling index on the detrended fluctuation analysis. We investigate and analyze the fluctuation characteristics in the handwriting process of three Kanji characters using this index. Moreover, we examine the relationship among the six handwriting time elements defined in the handwriting process, the handwriting difficulty of the three Kanji characters, and the timescale.
      PubDate: 2020-02-01
       
  • Energy-saving trajectory planning for robots using the genetic algorithm
           with assistant chromosomes
    • Abstract: Fossil fuel depletion and global warming are becoming increasingly important problems. Many trajectory plans for robot manipulators are developed by prioritizing operation efficiency, such as operating time and controllability, without considering energy consumption. In this study, the energy consumption problem is examined. This study discusses the application of a genetic algorithm (GA) to solve the problem of minimizing the energy consumption of a robot manipulator with nonlinear friction in the joints. The GA can search a wide area for an optimal solution; however, a long computation time is required. A gradient method can be used to quickly find a solution; however, the solution has a high probability of being a local optimum. This paper proposes a method that combines a gradient method and GA to quickly determine an optimal solution. In addition, the validity of the proposed method is examined.
      PubDate: 2020-02-01
       
  • A motion imitation system for humanoid robots with inference-based
           optimization and an auditory user interface
    • Abstract: Humanoid robots are expected to perform various jobs replacing human beings, but it is difficult for non-expert users to control them. To control humanoid robots easily, various motion imitation systems, in which a humanoid robot does the same motion as a human teacher, have been studied. In the present study, we make two contributions to building easy-to-use imitation systems. The first contribution is a flexible learning system that enables both synchronous real-time imitation, in which the robot imitates human motion almost immediately, and batch imitation, in which the robot’s motion is optimized more accurately after longer measurement of human motion. We use an efficient inference-based optimization method to enable both learning modes. The other contribution is an auditory user interface that accepts voice commands from the user and at the same time identifies the target person to be imitated. This enables the user to easily use the imitation system even when other people are present. Experimental results show that the proposed system can be used in both imitation modes and that it can identify the target person.
      PubDate: 2020-02-01
       
  • Deformable tensegrity structure underwater robot with a transformation
           mechanism
    • Abstract: Underwater robots for inspecting marine structures such as breakwaters, pipes and quay walls require mobility not only for self-transport but for rotation during inspection. To facilitate rotation mobility, we have proposed a portable, lightweight underwater robot whose performance to translate and rotate is achieved by it altering its shape. The shape is that of a three-strut tensegrity structure of three pipes connected with rubber strings. This manuscript describes a transformation mechanism for an underwater robot with a deformable tensegrity structure. The transformation mechanism includes a winding unit with a planetary gear. We show that the transformation mechanism has a self-locking feature by selecting a high gear ratio of the winding unit. We also evaluate the fluid characteristics of the robot with the transformation mechanism in several experiments in a circulating water tank to investigate the effect of the transformation mechanism.
      PubDate: 2020-02-01
       
 
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