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This paper introduces a method to automatically detect AutoPEEP (pulmonary distension), a frequent asynchrony in the patient-ventilator interface. The detection algorithm is developed based on a robust non-parametric hypothesis testing that requires no prior information on the distribution of the signal. The experiment results have shown that the proposed algorithm provide relevant AutoPEEP detection...
We revisit the well-known problem of boolean group testing which attempts to discover a sparse subset of faulty items in a large set of mostly good items using a small number of pooled (or grouped) tests. This problem originated during the second WorldWar, and has been the subject of active research during the 70's, and 80's. Recently, there has been a resurgence of interest due to the striking parallels...
Batik, as a cultural heritage from Indonesia, has a lot of motifs based on certain patterns. This paper discusses feature extraction methods for the recognition of batik motifs in digital images. In this study, the use of several feature extraction methods have been compared in terms of their performance with several scenarios for testing level accuracy. The methods include Gray Level Co-occurrence...
In this paper, a portable, easy to use, and real-time sleep stage classification device is presented. A simpler approach using raw features of ECG signals for sleep stage classification has been developed. Only one lead of ECG signal is required for operation which makes the device easily operable and only requiring user to attach 3 electrodes to the body. The device is constructed with singleboard...
This paper proposes a method of empirical mode decomposition (EMD) modal parameter identification based on Laplace wavelet matching, on the basis of synchronization test for pressure switch. Taking a pressure switch which is used in the air-conditioning of automotives as a object, the paper conducts a lot experiments with hammering test and white noise for vibrating identification of diaphragm. Results...
Abnormal sound test System of car electro motion backrest based on microphone is presented. When backrest is clamped, Connect the high-power DC power supply to backrest's motors by contactor, Contactor ON/OFF and the direction of Motor's current are controlled by PLC, Backrest can run forward or reverse, Two microphone are fix beside of backrest about 10cm before backrest rotation. The computer sample...
Scene classification in indoor and outdoor environments is a fundamental problem to the vision and robotics community. Scene classification benefits from image features which are invariant to image transformations such as rotation, illumination, scale, viewpoint, noise etc. Selecting suitable features that exhibit such invariances plays a key part in classification performance. This paper summarizes...
A novel word-based algorithm is presented to detect duplicate Picture in Picture (PiP) video sequences in this study. The conventional edge-based methods used to extract the PiP regions are not robust in the noise and blurring images. Bag of Words (BOW) model emphasizes words ambiguity and ignores spatial information. Without detecting the PiP regions and unlike the traditional word based approach,...
A function f : D ? R has Lipschitz constant c if dR(f(x),f(y)) = c· dD(x,y) for all x,y in D, where dR and dD denote the distance functions on the range and domain of f, respectively. We say a function is Lipschitz if it has Lipschitz constant 1. (Note that rescaling by a factor of 1/c converts a function with a Lipschitz constant c into a Lipschitz function.) In other words, Lipschitz functions are...
We describe a generalization of the group testing problem termed symmetric group testing. Unlike in classical binary group testing, the roles played by the input symbols zero and one are “symmetric” while the outputs are drawn from a ternary alphabet. Using an information-theoretic approach, we derive sufficient and necessary conditions for the number of tests required for noise-free and noisy reconstructions...
Previously, we compared several objective measures to estimate the subjective speech intelligibility scores of the Japanese Diagnostic Rhyme Test (DRT). PESQ-derived MOS, segmental SNR (SNRseg), frequency-weighed segmental SNR (fwSNRseg), and composite measures were tested. We mapped these measures to its corresponding intelligibility scores using quadratic equations trained on one speaker and one...
Comparing with the testing of conventional software systems, the testing of service-oriented systems (SOS) is considerably more challenging. Fault injection is a standard software testing approach that can be applied to the SOS. It is used in this paper as a base for testing of web service business processes at communication channel level as well as message level. The proposed approach provides simulation...
A vast number of historical and badly degraded document images can be found in libraries, public, and national archives. Due to the complex nature of different artifacts, such poor quality documents are hard to read and to process. In this paper, a novel adaptive binarization algorithm using ternary entropy-based approach is proposed. Given an input image, the contrast of intensity is first estimated...
In order to detect the small defect, the empirical mode decomposition (EMD) method is employed to process the magnetostrictive guided wave testing signal. Firstly, the principle of the EMD is introduced. Then, the experimental setup is developed to obtain guided wave testing signals. Both the prestressing strand and the parallel wire cable have been manufactured grooves in the wires. It is difficult...
Multiple faults in a program can interact to form new behaviors in a program that would not be realized if the program were to contain the individual faults. This paper presents an in-depth study of the effects of the interaction of faults within a program. Many researchers attempt to ameliorate the effects of faulty programs. Unfortunately, such researchers are left to rely upon intuition about fault...
This paper proposes a method for testing a device with multi-level signal interfaces. This method utilizes multi-level drivers that generate multi-level signals and multi-level comparators that are based on a new concept. The multi-level drivers can test the voltage noise tolerance of a receiver device with multi-level signal interfaces. The multi-level comparators realize real-time functional testing...
Affine moment invariants are important shape descriptors in pattern recognition and computer vision. Existing affine invariants methods are based on geometric and complex moments. In this paper, we propose a set of affine invariants extracted from Legendre moments. These invariants are derived by the relationship between the Legendre moment of the affine transformed image and that of the original...
We report the results of low and high dose rate total dose and SEE testing of the Intersil ISL70227RH low-noise operational amplifier together with a discussion of the part's electrical specifications and wafer fabrication process.
The platform aim to provide accurate friction experiment instrument for scientific research institutions and schools. The friction is measured on the testing platform by displacement method, then the amplification and filter signal is sent to the computer for data collecting and storing by means of lab-view real-time collection software, to realize the automatic test of friction coefficient. Through...
To drive hydraulic cylinder directly by hydraulic pump closed-loop represents a hot research area in the field of electro-hydraulic control technology today, and is the most direct means to improve the energy efficiency of electro-hydraulic control system. So far, this technology has been well applied to the pump-controlled symmetric hydraulic cylinder. But for the differential cylinder that widely...
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