• Speech Sciences
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• v.10 no.1
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• pp.95-105
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• 2003

This paper describes a new parameter for voice activity detection which serves as a front-end part for automatic speech recognition systems. The new parameter called run-ratio is derived from the runs test statistic which is used in the statistical test for randomness of a given sequence. The run-ratio parameter has the property that the values of the parameter for the random sequence are about 1. To apply the run-ratio parameter into the voice activity detection method, it is assumed that the samples of an inputted audio signal should be converted to binary sequences of positive and negative values. Then, the silence region in the audio signal can be regarded as random sequences so that their values of the run-ratio would be about 1. The run-ratio for the voiced region has far lower values than 1 and for fricative sounds higher values than 1. Therefore, the parameter can discriminate speech signals from the background sounds by using the newly derived run-ratio parameter. The proposed voice activity detector outperformed the conventional energy-based detector in the sense of error mean and variance, small deviation from true speech boundaries, and low chance of missing real utterances

• The Academic Congress of Korean Shoulder and Elbow Society
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• 1999.03a
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• pp.3-4
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• 1999

The electromyographic activity of four muscles of biceps, rotator cuffs (supraspinatus, infraspinatus and subscapularis) was measured from the non-dominant shoulders of 12 volunteers during six methods of provocative test for the biceps pathology. Any method of provocative test can not isolates the biceps activity prominently compared to the other rotator cuff muscles. But the Speed test can more isolates the activity of biceps than the other tests. Based upon this study, we think that the O'Brien's test is not a provocative maneuver by which the pain reproduced is not associated with the tension generated within the biceps tendon.

• Therapeutic Science for Rehabilitation
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• v.4 no.1
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• pp.53-62
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• 2015

Objective : This study aimed to evaluate the effects of multisensory and Motor-Based group activity program on the problem behaviors and burden of care in persons with dementia. Methods : Five persons with moderate to severe dementia and significant problem behaviors, received 4 weeks of multisensory and Motor-based group activity program. The Neuropsychiatric Inventory was employed in the pretest and posttest. Analysis was performed using SPSS and including Wilcoxon signed rank test. Results : Participants' average problem behavior scores decreased from 70 in the pretest to 38 after program. Mean scores of burden of care decreased from 47 to 29. Conclusion : Multisensory and Motor-Based group activity program can be an effective method to decrease problem behaviors and burden of care for older people with dementia.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.18 no.1
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• pp.97-106
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• 2011

Purpose: The purpose of this study was to identify social support and health status based on characteristics of leisure activity in middle-aged women. Methods: Participants were 148 middle-aged women living in the capital area. Data were collected through self-report questionnaires which were constructed to include leisure activity characteristics, social support and Brodman's CMI. Data were analyzed using t-test, and ANOVA, with SPSS/WIN 14.0. Results: Social support was different depending on leisure type, leisure partner, length of participation in present activity, regularity, and motivation to start activity. Health status was different depending on the length of participation in present activity, and regularity. Conclusion: Because social support and health status depend on characteristics of leisure activity, further study in nursing one how to resolve the physical, psychological, social and health problems that middle-aged women might experience through various leisure activities.

• KIISE Transactions on Computing Practices
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• v.22 no.1
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• pp.32-37
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• 2016

In model-based testing using sequence diagrams, test cases are automatically derived from the sequence diagrams. For the generation of test cases, scenarios need to be found for representing as a sequence diagram, and to extract test paths satisfying the test coverage. However, it is hard to automatically extract test paths from the sequence diagram because a sequence diagram represents loop, opt, and alt information using CombinedFragments. To resolve this problem, we propose a transformation process that transforms a sequence diagram into an activity diagram which represents scenarios as a type of control flows. In addition, we generate test cases from the activity diagram by applying a test coverage concept. Finally, we present a case study for test cases generation from a sequence diagram.

• The Journal of the Korea Contents Association
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• v.8 no.7
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• pp.103-111
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• 2008

There have been a few mathematic education programs that based on operating activity considering cognitive development level of elementary student, although we can find a variety of computer-aided mathematic teaching methods for elementary school. The purpose of this paper was to examine the effect of mathematical program based on operating activity developed as teaching materials in plain figures. As results of the post-achievement test and attitude test, it was found that the math program has been improved the achievement positively. By a result that inspects mathematical learning attitude of the experiment group, it was found that variable factors such as interest, confidence, self-learning were changed significantly more important in statistics.

• The Journal of the Acoustical Society of Korea
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• v.26 no.1
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• pp.16-24
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• 2007

Voice activity detectors (VADs) are important in wireless communication and speech signal processing. In the conventional VAD methods. an expression for the likelihood ratio test (LRT) based on statistical models is derived. Then, speech or noise is decided by comparing the value of the expression with a threshold. We propose a new method with the modified decision rule based on the Gaussian distribution and the uniformly most power (UMP) test. This method requires the distribution of the absolute value of the incoming speech signal. Then we can obtain the final decision through the relation between the Rayleigh distributions. This VAD method can detect speech without a priori signal-to-noise ratio (SNR) which is required in the conventional VAD algorithms. Additionally, in the various VAD performance tests, the proposed VAD method is shown to be more effective than the traditional scheme.

• IEMEK Journal of Embedded Systems and Applications
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• v.8 no.6
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• pp.319-327
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• 2013

Most Android applications are being developed by one or a few person without professional testing team. In such a poor development environment, applications may contain severe errors which may also affect the Android platform. In order to detect these errors, the behaviors of Android activities should be identified by considering user-defined lifecycle as well as the system-defined one. This paper proposes a method to generate test scenarios based on the both of user-defined and system-defined activity lifecycle of Android GUI applications. The test scenarios are generated by a state diagram extracted from the source code and are transformed into Jython scribes by using GUI layout information for automatically performing testing.

• Journal of Fisheries and Marine Sciences Education
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• v.27 no.1
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• pp.108-114
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• 2015

The purpose of this study is to find the relationships among communication competency, social network centrality(trust centrality and knowledge sharing centrality), discussion performance, and online boarding activity in the team based learning situation. For investigating this topic, 44 students are participated in the classes of educational technology. In order to find out the relationships among communication competency, social network centrality, discussion performance, and online boarding activity, compared t-test and path analysis are used. Followings are the results of the research: (a) Communication competency is improved significantly after team based learning. (b) Trust centrality effects significantly on the knowledge sharing centrality. (c) Knowledge sharing effects significantly on discussion performance. (d) Trust centrality effects on the online boarding activity in the team based learning.

• Journal of Institute of Control, Robotics and Systems
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• v.16 no.1
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• pp.83-89
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• 2010

If an appliance perceives the location or health condition of a resident in the smart home, it can provide more intelligent service actively. That is, while the conventional appliance is operated by manual input of a resident, the location-based human adaptive appliance detects the resident's information such as location, activity pattern, or health condition by itself and provides the most suitable living condition for the resident autonomously. This paper presents the real-time location-based metabolic rate estimation method that measures the amount of physical activity (metabolic rate) for location-based human adaptive air-conditioner. And, the feasibility of the algorithm is evaluated experimentally on a test bed using the pyroelectric infrared sensor-based indoor location aware system (PILAS) that is a non-terminal-based location-aware system.