A Development Machine for Measuring the Precision and the Response Time of Punches

Objective: To develop and evaluate the device for measuring precision (in percentage) and response time (in seconds) of punches. Methods: Researchers cooperated with Sports Authority of Thailand and the Amateur Boxing Association of Thailand in development. Results: Robo-Boxing Trainer machine consisted of four targets. Each punching target has eight sensors and eight LED lights. Operating software, which programmed by PLC-CX programmer and DOPSoft (delta), can set the punching series and alarm signals. It recorded the response time from the starting signal to making contact with the target, calculating precision in percentage. This software could be set and recorded maximal 40 series and maximal 100 punches in each punching series. Researchers compared the accuracy of counting time with Digital Oscilloscope and tested the efficiency of sensors’ cutting signal. This study found the counting time to be of high accuracy (100% and 98.8%). The cutting sensors' signal test found to be efficient. Conclusion: Robo-Boxing Trainer machine, which is high in accuracy, may help to test and improve a boxer’s skills. Also, it can apply to train for other related sports.

Download Full-text

Indoor high-accuracy positioning system using image sensor and visible LED lights

Asia Communications and Photonics Conference 2016 ◽

10.1364/acpc.2016.as1b.6 ◽

2016 ◽

Author(s):

Wu Liu ◽

Chao Yang ◽

Qi Yang

Keyword(s):

Image Sensor ◽

High Accuracy ◽

Positioning System ◽

Led Lights

Download Full-text

High-accuracy positioning system using visible LED lights and image sensor

2008 IEEE Radio and Wireless Symposium ◽

10.1109/rws.2008.4463523 ◽

2008 ◽

Cited By ~ 42

Author(s):

Masaki Yoshino ◽

Shinichiro Haruyama ◽

Masao Nakagawa

Keyword(s):

Image Sensor ◽

High Accuracy ◽

Positioning System ◽

Led Lights

Download Full-text

A Novel Acoustic Dissolved Oxygen Transmitter for Fish Telemetry

Marine Technology Society Journal ◽

10.4031/002533206787353655 ◽

2006 ◽

Vol 40 (1) ◽

pp. 103-108 ◽

Cited By ~ 10

Author(s):

Jon C. Svendsen ◽

Kim Aarestrup ◽

John F. Steffensen ◽

Jannik Herskin

Keyword(s):

Dissolved Oxygen ◽

Response Time ◽

Oxygen Saturation ◽

Ambient Temperature ◽

Entire Range ◽

High Accuracy ◽

Field Observations ◽

Different Temperatures ◽

Fish Telemetry ◽

Oxygen Measurements

The multiple responses of fishes to changes in dissolved oxygen saturations have been studied widely in the laboratory. In contrast, only a few studies have included field observations. The objective of the present study was to evaluate the performance of a novel acoustic dissolved oxygen transmitter for field biotelemetry. The results demonstrated that the output of the transmitter was unaffected by three different temperatures (10 to 30°C) and described the dissolved oxygen saturation with high accuracy (r2 > 0.99) over the entire range of 0 to 191% saturation. The response time (≥ 90% of end value) of the transmitter was 12 s both in terms of decreasing (100 to 0%) and increasing (0 to 100%) oxygen saturations. When externally attached to fishes, the present findings support the use of the transmitter for reliable dissolved oxygen measurements on individuals living in environments that may change both temporally and spatially with regard to ambient temperature and dissolved oxygen saturation.

Download Full-text

A New 1,000 kV Electron Microscope

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100061318 ◽

1967 ◽

Vol 25 ◽

pp. 260-261

Author(s):

M. Nishigaki ◽

S. Katagiri ◽

H. Kimura ◽

B. Tadano

Keyword(s):

Electron Microscope ◽

High Voltage ◽

Basic Research ◽

Chromatic Aberration ◽

High Accuracy ◽

Biological Specimen ◽

Voltage Electron ◽

High Voltage Electron Microscope ◽

High Voltage Electron

The high voltage electron microscope has many advantageous features in comparison with the ordinary electron microscope. They are a higher penetrating efficiency of the electron, low chromatic aberration, high accuracy of the selected area diffraction and so on. Thus, the high voltage electron microscope becomes an indispensable instrument for the metallurgical, polymer and biological specimen studies. The application of the instrument involves today not only basic research but routine survey in the various fields. Particularly for the latter purpose, the performance, maintenance and reliability of the microscope should be same as those of commercial ones. The authors completed a 500 kV electron microscope in 1964 and a 1,000 kV one in 1966 taking these points into consideration. The construction of our 1,000 kV electron microscope is described below.

Download Full-text

Temporal Prediction Errors Affect Short-Term Memory Scanning Response Time

Experimental Psychology (formerly Zeitschrift für Experimentelle Psychologie) ◽

10.1027/1618-3169/a000339 ◽

2016 ◽

Vol 63 (6) ◽

pp. 333-342

Author(s):

Roberto Limongi ◽

Angélica M. Silva

Keyword(s):

Response Time ◽

Short Term Memory ◽

Estimation Error ◽

Predictive Coding ◽

Time Estimation ◽

Prediction Errors ◽

Memory Scanning ◽

Short Term ◽

Term Memory ◽

Temporal Prediction

Abstract. The Sternberg short-term memory scanning task has been used to unveil cognitive operations involved in time perception. Participants produce time intervals during the task, and the researcher explores how task performance affects interval production – where time estimation error is the dependent variable of interest. The perspective of predictive behavior regards time estimation error as a temporal prediction error (PE), an independent variable that controls cognition, behavior, and learning. Based on this perspective, we investigated whether temporal PEs affect short-term memory scanning. Participants performed temporal predictions while they maintained information in memory. Model inference revealed that PEs affected memory scanning response time independently of the memory-set size effect. We discuss the results within the context of formal and mechanistic models of short-term memory scanning and predictive coding, a Bayes-based theory of brain function. We state the hypothesis that our finding could be associated with weak frontostriatal connections and weak striatal activity.

Download Full-text