Replay Function Research Articles

Development of a VR Training System for Saito's Music Conducting Method

It is important for university students studying elementary music education to master basic conducting gestures. We have developed a VR training system for self‐study of Saito's music conducting method. The system uses a depth camera and magnetic motion capture system to measure hand movements, and an HMD to superimpose the teacher's hand on the trainee's own hand. With the system, trainee can self‐study while visually and three‐dimensionally checking the motion and timing of the teacher's and the trainee's own hand gestures. In this paper, we describe an evaluation experiment with our system. The results showed that the VR environment is effective for learning three‐dimensional movements, and that the addition of a visual line display function for trajectories, a function to display trajectories from different viewpoints, and a replay function improves the learning effect. Specifically, the results of a short training session of 5 min revealed that the developed system was effective in bringing 75% of the trainees closer to the teacher's gesture. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

Multi-Scopic Cognitive Memory System for Continuous Gesture Learning.

With the advancement of artificial intelligence technologies in recent years, research on intelligent robots has progressed. Robots are required to understand human intentions and communicate more smoothly with humans. Since gestures can have a variety of meanings, gesture recognition is one of the essential issues in communication between robots and humans. In addition, robots need to learn new gestures as humans grow. Moreover, individual gestures vary. Because catastrophic forgetting occurs in training new data in traditional gesture recognition approaches, it is necessary to preserve the prepared data and combine it with further data to train the model from scratch. We propose a Multi-scopic Cognitive Memory System (MCMS) that mimics the lifelong learning process of humans and can continuously learn new gestures without forgetting previously learned gestures. The proposed system comprises a two-layer structure consisting of an episode memory layer and a semantic memory layer, with a topological map as its backbone. The system is designed with reference to conventional continuous learning systems in three ways: (i) using a dynamic architecture without setting the network size, (ii) adding regularization terms to constrain learning, and (iii) generating data from the network itself and performing relearning. The episode memory layer clusters the data and learns their spatiotemporal representation. The semantic memory layer generates a topological map based on task-related inputs and stores them as longer-term episode representations in the robot's memory. In addition, to alleviate catastrophic forgetting, the memory replay function can reinforce memories autonomously. The proposed system could mitigate catastrophic forgetting and perform continuous learning by using both machine learning benchmark datasets and real-world data compared to conventional methods.

How our understanding of memory replay evolves.

Memory reactivations and replay, widely reported in the hippocampus and cortex across species, have been implicated in memory consolidation, planning, and spatial and skill learning. Technological advances in electrophysiology, calcium imaging, and human neuroimaging techniques have enabled neuroscientists to measure large-scale neural activity with increasing spatiotemporal resolution and have provided opportunities for developing robust analytic methods to identify memory replay. In this article, we first review a large body of historically important and representative memory replay studies from the animal and human literature. We then discuss our current understanding of memory replay functions in learning, planning, and memory consolidation and further discuss the progress in computational modeling that has contributed to these improvements. Next, we review past and present analytic methods for replay analyses and discuss their limitations and challenges. Finally, looking ahead, we discuss some promising analytic methods for detecting nonstereotypical, behaviorally nondecodable structures from large-scale neural recordings. We argue that seamless integration of multisite recordings, real-time replay decoding, and closed-loop manipulation experiments will be essential for delineating the role of memory replay in a wide range of cognitive and motor functions.

Contextualizing Replay: Remediation, Affective Economies, Ontological Authority, and the Facade of Certitude

This study contextualizes replay within the discourse of sport media. Drawing on discourse as theory, the author articulates how replay functions within the sportscast as adjudication, arguably the most compelling yet contentious aspect of the live sportscast. Not only does replay function within sport media discourse, but it also operates within a broader cultural context. Given sport media’s key locus within the entertainment industry, the use of replay is a key technological innovation that has brought even more consolidation and coordination between sport media and the sport leagues and organizations. Replay is media’s contribution to maintaining the veneer of integrity through a quest for certitude. As an analytical strategy, the intertextuality of replay provides an opportunity to interrogate whose interests are being served and consolidated in the mobilization of this technology within affective economies that satisfy a neoliberal sensibility.

8K 240-Hz Full-Resolution High-Speed Camera and Slow-Motion Replay Server Systems

We developed an 8K 240-Hz full-resolution high-speed camera and slow-motion replay server system for the creation of sports content. The high-speed camera acquires 8K 240-Hz video through three 1.25-in 33-Mpixel 240-Hz CMOS image sensors. Signals are transmitted between a camera head and a camera control unit (CCU) through a four-core optical camera cable, and the CCU then processes the sensor signal and outputs an 8K 240-Hz RGB 4:4:4 video signal. The 8K 240-Hz slow-motion replay server system can record up to 240 min of 8K 240-Hz video while simultaneously playing back an 8K 60-Hz slow-motion video. The input 8K 240-Hz video is compressed by a factor of 12 and stored on solid-state drives. The replay server offers loop-recording, live-editing, and slow-motion replay functions with a dedicated remote controller. We evaluated the 8K slow-motion video by combining the camera and slow-motion replay server system.

描画履歴再生機能つきドロー系ソフトウェア「Polka」を利用した実践と評価(1) : 理科学習における予測・観察・説明の支援

描画履歴再生機能つきドロー系ソフトウェア「Polka」を利用した実践と評価(1) : 理科学習における予測・観察・説明の支援

Develop Total IT Service Monitoring System of Agentless Method for Total Management of based on Cloud Service Demand

Cloud computing technology relieves the maintenance burden of corporate IT infrastructure, which is the highly expected area for cost saving to be achieved through corporate IT technology innovation. But logically more monitored items occur especially in cloud service using virtualization technology. In reality, monitoring tool is increasingly gaining more attention because of its capability of monitoring service quality, as virtualization-based equipments not seen physically. The system developed in this paper, allows for real-time total monitoring of all elements that configure services by implementing Agentless total computing monitoring system for comprehensive management of IT infrastructure service, as well as for service quality monitoring with Replay function through monitoring log analysis and Big Data analysis on resources traffic and performance data. Furthermore, Android application was developed in order to provide monitoring and alarming services.

Surveying the experiences and perceptions of undergraduate nursing students of a flipped classroom approach to increase understanding of drug science and its application to clinical practice

Patient harm from medication error is a significant issue. Individual failures by health professionals including knowledge deficits and poor communication have been identified as increasing the likelihood of medication administration errors. In Australia, the National Strategy for Quality Use of Medicines in 2002 compels health professionals to have the knowledge and skills to use medicines safely and effectively. This paper examines nursing students' perceptions of the effectiveness of a flipped classroom approach to increase understanding of pharmacology principles and the application of this knowledge to medication practice. An internet-based self-completion questionnaire was used in 2013 (n = 26) after the flipped classroom approach was implemented, and pre- (n = 6) and post-flipping (n = 25) in 2014. Students who engaged with digitally recorded lectures (eLectures) prior to face-to-face workshops stated that they had greater understanding of the subject and enhanced critical thinking skills. The replay function of the eLecture was perceived by some students as most beneficial to independent learning. However, for some students, time constraints meant that they relied on eLectures alone, while others preferred traditional teaching methods. Although limited by sample size and potential participant bias, the results provide insights about the flipped classroom experience from a student perspective.

A new touchscreen application to retrieve speech information efficiently

In this paper, we describe an adaptive speech rate control technology for ultrafast listening that is equivalent to skimming. Nowadays, listening to audio books on mobile devices is quite common. Therefore, in the future we will obtain ever-increasing amounts of information through speech instead of conventional printed materials. People read books at various levels of detail from close reading to skimming. Although a similar feature to skimming is required to efficiently obtain information from audio sources, there is no tool equivalent to skimming for audio playback. Thus, we have developed a new speech rate conversion method to efficiently obtain information from audio sources with very fast replay. This algorithm will help not only sighted people to enjoy audio books but also visually impaired people because almost all of their information is obtained from speech. Thus, the implementation of this technology on special audio players for visually impaired people as a new replay function is expected to be useful. Moreover, this technology should be useful for all audio book listeners, not only people with limited sight.1

지그비기반의 실시간 이미지전송시스템의 설계 및 구현

원격지에 있는 이동 모형을 제어하기 위해서는 이동 모형이 있는 곳의 환경 정보(또는 이미지)를 획득해야 한다. 그러나 센서 네트워크로 구성되지 않은 중앙 통제형 시스템에서는 이동 모형에 대한 원격 제어가 쉽지 않다. 이를 위해 본 논문에서는 지그비(Zigbee) 기술에 기반한 이미지전송시스템과 통신 프로토콜을 설계하고 구현한다. 지그비는 근거리에서 Bluetooth에 비해 적은 전력소모로 신호를 송수신하기에 편리하다는 기술 특성을 이용해 다양한 서비스를 가능하게 해준다. 본 논문에서는 구현된 지그비 기반 제어 시스템과 통신프로토콜은 서버 PC와 WiFi에 기반한 스마트 기기를 이용하여 이동 모형을 원격으로 제어하며, 제어 기능으로는 일반 제어기능과 반복재생 기능을 탑재하고 있다. 최종적으로 구현된 시스템을 실제 무선 홈 네트워크 환경에 적용하여 기능적 동작성과 성능을 분석 하였다. In order to control moving facilities on a remote place effectively, it are required to acquire a environment informations such as images where the moving facilities are placed. However, since there is no tools to acquire such informations to the central control system based on the non-networked sensor environments, it is difficult to control the moving facilities remotely. Therefore, we design and implement the Zigbee based image transmission system and communication protocol to control the moving target remotely. The wireless control utilizing the Zigbee protocol is that electrically consumption is more small than the Bluetooth and reliability of data transmission is better. The implemented Zigbee based control systems and communication protocol have the normal and replay function for a realtime control of the moving target under the server PC and the mobile FDA with the WiFi protocol. The functional operability and performance are analyzed by a designed prototype under the wireless home network environment.

애니매트로닉스 모형제어를 위한 반복재생형 무선송수신 제어기

애니매트로닉스(animatronics) 기술은 CG(Computer Graphic)기술, 특수효과, 특수 장치의 결합을 통해 영상표현의 다양한 가능성의 제시와 함께 시각적인 이미지의 완성도를 높일 수 있는 중요한 요소기술이라 할 수 있다. 본 논문에서는 개와 곰과 같은 4족형 동물 애니매트로닉스 모형의 복합제어를 위해 지그비기반의 무선 송수신 제어기와 통신 프로그램을 설계하여 구현하였다. 지그비 프로토콜을 이용한 무선제어는 블루투스보다 전력소모가 적고 데이터 전송의 신뢰성이 좋다는 장점을 가진다. 구현된 송수신 제어기와 프로그램은 노말 제어기능과 메모리 기능을 갖는 반복재생 기능을 탑재하고 있다. 최종적으로 구현된 시스템을 애니매트로닉스 모형에 적용하여 무선 환경에서 기능과 동작성 테스팅을 완료하였다. The animatronics technique could be very important fact of technique not only to achieve full completion of visible image but also to offer lots of chances to express images by merging CG, special effects and special devices. In this thesis, we design and implement the Zigbee-based wireless transceiver and communication program to control animal animatronics such as a dog and bear. The wireless control utilizing the Zigbee protocol is that electrically consumption is more small than the Bluetooth and reliability of data transmission is better. The implemented control systems and program have the normal and replay function for control of animal models. This functions and operability are tested by a designed animatronics prototype under the wireless environment.

オンボード操船シミュレータ訓練の効果と練習船実習への応用

This paper describes the results of an experiment onboard a training ship that aimed at assessing effectiveness of onboard Ship Maneuvering Simulator (SMS) training. And, based on the results of the experiment, authors propose the optimal combination of onboard SMS training with actual training on a training ship. In the experiment, cadets were divided into group A and B, and practiced the anchoring practice according to the same scenario both by onboard SMS and by actual ship. Cadets practiced the training in a team that consist of 3 cadets who played the role of Captain, 1st officer and 3rd officer. The group A cadets went through the SMS training first and then the real onboard training, and the opposite was the case for the group B cadets. In the real anchoring practice using the test ship, ship-handling skill of cadets were scored by experienced instructors. In general, the figure of ability rank of group A was higher than that of group B in all elemental techniques, we considered that effective training on a training ship is possible by combining the onboard SMS training and actual training. On the application of proposed training method, it is important to choose a proper training item after consider the advantage of the onboard SMS training. As training replay function is one of the unique points of simulator, the use of onboard SMS is effective for the debriefing to cadets after real training.

Standalone performance measurement for wind farms

France-based Texsys has announced details of its performance measurement system for wind farms, Actem. The standalone generic system can provide synchronised and accurate data in order to monitor a windfarm at anytime and from any place. Data are acquired within a 1s cycle directly from power output and the metereological mast (no turbine turbulence disturbance occurs as in the case of a nacelle-based anemometer). Data can be displayed in realtime at a remote office with an instantly updated interface for quick performance analysis. Events are logged as well and defined alarms triggered when there is a problem. A replay function helps the user to quickly and accurately detect and understand a problem and how to intervene. The system has been developed by Texsys in partnership with ADEME (French Government Agency of Environment and Energy Sustainability). This is a short news story only. Visit www.re-focus.net for the latest renewable energy news.

3-dimensional movement analysis after internal fixation of pelvic ring fractures. A computer simulation

Several studies exist describing the biomechanical behavior of several external or internal fixation techniques of the posterior and anterior pelvic ring. Recently, the traditional models using isolated anatomical sections or fixed pelvic ring specimens for evaluation of linear or two-dimensional data have been replaced by three-dimensional measurement systems and simulations of muscle forces. These studies have contributed important information to the understanding of the biomechanics of the intact and injured pelvic ring, however, a consequent movement analysis is still missing. In the present study, 3-D data acquired during several series of testing implants for stabilization of the posterior pelvic ring (sacrum: sacral bars, sacral plates, transiliosacral lag screws; Sl joint: anterior plates, transiliosacral lag screws), using a complete pelvic ring model with single leg stance and static abductor muscle simulation, were converted into a commercially available 3-D animation package. By use of simple graphical representation of anatomical elements of the posterior pelvic ring, reproducible and reliable movement patterns for different types of stabilization could be identified, which demonstrated potential "weakness" of the fixation before failure occurred. These movements were analyzed by "replay functions" and were comparable to observations during the original experiment. The following movements were observed. Sacral fracture, transforaminal: (1) rotation of the transiliosacral lag screws around its axis, even with a second screw into S1; (2) Sacral bars: shearing with compression of the cranial-posterior fracture zone; (3) Sacral plates: minimal translation in the proximal fracture zone and distraction in the distal fracture line, effectively compensated by an additional plate at the S3 level. Sl joint disruption: (1) anterior plating (two plates), minimal translation in the plane of the Sl joint; (2) transiliosacral lag screws, rotational movement around the axis of the screws with only minimal movement at the S1 level. The provided information confirmed the observations and allowed a more detailed and comfortable examination of movement patterns. A better understanding of potential "failure zones" might be useful to optimize the dimensions, design, and the positioning of implants for the pelvic girdle. For further studies, more complex computer models including finite element technology might be useful to add accessory information and could result in a decreased need of living specimen testing.