PDA(Personal Digital Assistant，个人数字助理)是一种小巧轻便的手持设备。这种手持设备集中了计算、电话、传真和网络等多种功能，已经越来越受到人们的青睐。PDA不仅可以用来管理个人信息(比如通信录、日程安排和工作计划等)，还可...PDA(Personal Digital Assistant，个人数字助理)是一种小巧轻便的手持设备。这种手持设备集中了计算、电话、传真和网络等多种功能，已经越来越受到人们的青睐。PDA不仅可以用来管理个人信息(比如通信录、日程安排和工作计划等)，还可以实现网上浏览、收发电子邮件等多种现代通信功能，为人们的生活和工作带来极大的方便。展开更多
An efficient calibration algorithm for an ambulatory audiometric test system is proposed. This system utilizes a personal digital assistant (PDA) device to generate the correct sound pressure level (SPL) from an audio...An efficient calibration algorithm for an ambulatory audiometric test system is proposed. This system utilizes a personal digital assistant (PDA) device to generate the correct sound pressure level (SPL) from an audiometric transducer such as an earphone. The calibrated sound intensities for an audio-logical examination can be obtained in terms of the sound pressure levels of pure-tonal sinusoidal signals in eight-banded frequency ranges (250, 500, 1 000, 2 000, 3 000, 4 000, 6 000 and 8 000 Hz), and with mapping of the input sound pressure levels by the weight coefficients that are tuned by the delta learning rule. With this scheme, the sound intensities, which evoke eight-banded sound pressure levels by 5 dB steps from a minimum of 25 dB to a maximum of 80 dB, can be generated without volume displacement. Consequently, these sound intensities can be utilized to accurately determine the hearing threshold of a subject in the ambulatory audiometric testing environment.展开更多
This work presents the authors＇ experience in the field of mobile technologies, from which several initiatives have emerged. As result of this, a games-based framework for learning has been developed in these last ye...This work presents the authors＇ experience in the field of mobile technologies, from which several initiatives have emerged. As result of this, a games-based framework for learning has been developed in these last years. This framework is composed by a competition called Mobigame, which has as main aim to stimulate the participation of the students. By participating in this competition participants learn to develop for mobile devices. A game to practice Japanese is also presented in this article, which was presented in the above mentioned competition. This game has been developed for mobile phones or PDAs （Personal Digital Assistants） based on the JME （Java Mobile Edition） technology. Finally, another initiative is also presented： A free download platform of digital contents for mobile devices based on info-educational games.展开更多
文摘PDA(Personal Digital Assistant，个人数字助理)是一种小巧轻便的手持设备。这种手持设备集中了计算、电话、传真和网络等多种功能，已经越来越受到人们的青睐。PDA不仅可以用来管理个人信息(比如通信录、日程安排和工作计划等)，还可以实现网上浏览、收发电子邮件等多种现代通信功能，为人们的生活和工作带来极大的方便。
基金supported by the grant of the Korean Ministry of Education, Science and Technology (The Regional Core Research Program/Chungbuk BIT Research-Oriented University Consortium)
文摘An efficient calibration algorithm for an ambulatory audiometric test system is proposed. This system utilizes a personal digital assistant (PDA) device to generate the correct sound pressure level (SPL) from an audiometric transducer such as an earphone. The calibrated sound intensities for an audio-logical examination can be obtained in terms of the sound pressure levels of pure-tonal sinusoidal signals in eight-banded frequency ranges (250, 500, 1 000, 2 000, 3 000, 4 000, 6 000 and 8 000 Hz), and with mapping of the input sound pressure levels by the weight coefficients that are tuned by the delta learning rule. With this scheme, the sound intensities, which evoke eight-banded sound pressure levels by 5 dB steps from a minimum of 25 dB to a maximum of 80 dB, can be generated without volume displacement. Consequently, these sound intensities can be utilized to accurately determine the hearing threshold of a subject in the ambulatory audiometric testing environment.
文摘This work presents the authors＇ experience in the field of mobile technologies, from which several initiatives have emerged. As result of this, a games-based framework for learning has been developed in these last years. This framework is composed by a competition called Mobigame, which has as main aim to stimulate the participation of the students. By participating in this competition participants learn to develop for mobile devices. A game to practice Japanese is also presented in this article, which was presented in the above mentioned competition. This game has been developed for mobile phones or PDAs （Personal Digital Assistants） based on the JME （Java Mobile Edition） technology. Finally, another initiative is also presented： A free download platform of digital contents for mobile devices based on info-educational games.
