Lin Ling

Tianjin University, T’ien-ching-shih, Tianjin Shi, China

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Publications (9)55.52 Total impact

  • Ma Yong · Yan Yu · Wang Yan · Liaoning Huludao · Li Gang · Lin Ling
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    ABSTRACT: Wireless body sensor network is employed into the coal mine rescue system. We present a multi-objective optimization methodology for self-organizing, adaptive wireless sensor network design and energy management, taking into consideration application-specific requirements, communication constraints and energy-conservation characteristics. We use genetic algorithm as the optimization tool. Simulation results show that this method can optimize the power management obviously to improve the network load balance, without lacking of network characteristics that are required by the coal mine rescue system.
    No preview · Article · Apr 2009
  • Zhan Minjing · Li Gang · Wei Qiang · Cui Hualei · Lin Ling
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    ABSTRACT: The TiO2 membrane supported on porous Ti planar can be used as a kind of alternative material of immunoisolation membranes, which are presently prepared by polymeric materials, in order to overcome defects of conventional immunoisolation membranes. The composite membranes were prepared by sol–gel technique with tetrabutyl titanate and the withdrawal velocity was 4mm/s. The circle of ‘dip-coating-sintering’ must be repeated five times. The retention rate of proteins and flux of glucose were used to evaluate the effect of immunoisolation. The result showed that the membranes, which were sintered under 700°C, could completely retain the proteins with molecular weight over 156kDa and the retention rate of BSA exceeded 85%. At the same time, the glucose and proteins, whose molecular weight were under 45kDa, could all freely pass the membranes according to the concentration difference of both sides. However, the retention rate of proteins first increased and subsequently decreased with the increase of sintering temperature. The membranes, which were sintered at 600°C, retained more proteins than the membranes sintered at other temperatures. So a better sintering temperature, which can be used as immunoisolation membrane, is about 600°C.
    No preview · Article · Dec 2008 · Applied Surface Science
  • Li Gang · Yu Chao · Lin Ling · Stephen C-Y Lu
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    ABSTRACT: Deep brain stimulators, often called `pacemakers for the brain', are implantable devices which continuously deliver impulse stimulation to specific targeted nuclei of deep brain structure, namely deep brain stimulation (DBS). To date, deep brain stimulation (DBS) is the most effective clinical technique for the treatment of several medically refractory movement disorders (e.g., Parkinson's disease, essential tremor, and dystonia). In addition, new clinical applications of DBS for other neurologic and psychiatric disorders (e.g., epilepsy and obsessive-compulsive disorder) have been put forward. Although DBS has been effective in the treatment of movement disorders and is rapidly being explored for the treatment of other neurologic disorders, the scientific understanding of its mechanisms of action remains unclear and continues to be debated in the scientific community. Optimization of DBS technology for present and future therapeutic applications will depend on identification of the therapeutic mechanism(s) of action. The goal of this review is to address our present knowledge of the effects of high-frequency stimulation within the central nervous system and comment on the functional implications of this knowledge for uncovering the mechanism(s) of DBS.
    No preview · Article · Sep 2005 · Journal of Physics Conference Series
  • Source
    Chen Yaqin · Lin Ling · Li Gang · Ye Wenyu · Yu Qilian
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    ABSTRACT: Noninvasive determination of tissue optical properties is essential for clinical applications in medical diagnostics and therapeutics. In this paper, we describe a method to determine reduced scattering coefficient μs' and absorption coefficient μa from spatially resolved relative diffuse reflectance. A neural network in conjunction with data preprocessing technique - principal component analysis (PCA) is employed to perform the estimations from the diffuse reflectance data generated by Monte Carlo simulations. The PCA-NN was trained and tested on the space with μs' between 0.1 and 2.0 mm<sup>-1</sup> and μa between 0.01 and 0.1 mm<sup>-1</sup>. Tests on the above space show the rms errors of this method to be 4.6% for μs' and 9.2% for μa. It's a more efficient and robust way for real-time clinical applications than other methods.
    Full-text · Conference Paper · Jan 2004
  • Ye Wenyu · Li Gang · Lin Ling · Yu Qilian
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    ABSTRACT: A new method for clustering analysis of QRS complexes is proposed. The method integrates principal component analysis (PCA) with self-organizing map neural network (SOM). The QRS complex feature is extracted based on PCA and the unsupervised SOM is employed to cluster the data. The characteristics and the behavior of the proposed method applying different SOM architectures are studied. The method is tested with the MIT-BIH database. It is demonstrated that QRS complexes feature can be presented by four largest principle components and the PCA results can be used to cluster analysis efficiently. The relationship between cluster results and clinical categories are also investigated in this paper.
    No preview · Conference Paper · Jan 2004
  • Li Gang · Ye Wenyu · Lin Ling · Yu Qilian · Yu Xuemin
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    ABSTRACT: The issue we address in this article is how to reduce the computational burden by using an algorithm based on a linear-approximation distance-thresholding compression technique combined with the backpropagation neural network method. We also address how to improve the training speed. The experimental results found with the MIT-BIH database show that the new algorithm is faster in convergence and more accurate in feature recognition than existing methods.
    No preview · Article · Apr 2000 · IEEE Engineering in Medicine and Biology Magazine
  • Lin Ling · M A Xiaorong · L I Gang
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    ABSTRACT: This paper presents several methods of designing low-power-consumption solid-state Holter recorders. The recorder designed with these methods uses an average working current of only 19mA, which can satisfy the needs of a 24-hour, large capacity, whole information Holter recorder. (C)1995Aspen Publishers, Inc.
    No preview · Article · Nov 1995 · Journal of clinical engineering
  • L I Gang · Lin Ling · Y U Qilian · Y U Xuemin
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    ABSTRACT: A new adaptive coherent model algorithm for removal of power-line interference in biomedical signals is presented in this paper. Because most biomedical signals are extremely weak, interference from the environment, especially power-line interference, is often much stronger than the signal to be measured. Therefore, how to eliminate or reduce the effect of 50/60 Hz interference has been one of the most important problems in biomedical signal measurement. The primary idea presented in this paper is: based on signal coherent quality, to establish an adaptive interference model using the original signal itself; then to subtract the interference model from the original signal so as to eliminate power-line interference. This adaptive coherent model method has been proven with on-line as well as off-line experiments, and has satisfactory effect for removal of power-line interference in physiological signal measurement. The algorithm is simple, saves time, and can be used in a microprocessor-based instrument. (C)1995Aspen Publishers, Inc.
    No preview · Article · Mar 1995 · Journal of clinical engineering
  • Li Gang · Feng Jing · Lin Ling · Yu Qilian
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    ABSTRACT: The system clock in the authors' Intel 80c31-based Holter recorder is 12 MHz, and thus it takes tens of milliseconds to obtain the d/sub k/ at instant k. Therefore, it is impossible to apply the original linear approximation distance thresholding (LADT) algorithm in real time. With the authors' improved algorithm it takes about one ms to calculate /spl verbar/a/sub adm//spl verbar/=/spl sigma//spl middot/(1+(a/t)/sup 2/)/sup 1/2/. Though it is much faster to fulfill a linear segment approximation by the improved algorithm than by the original one, it is still difficult directly to apply the improved algorithm in a real-time system. However, it takes only two microseconds to get /spl verbar/a/sub adm//spl verbar/ by look-up in the error threshold table. In this way, about one millisecond is needed to complete a linear segment approximating (about 50 points). It can be seen that the fast realization scheme using the error threshold table not only preserves the high compression ratio and low distortion advantages of the LADT algorithm, but also makes possible the application of the LADT algorithm in real-time.< >
    No preview · Article · May 1994 · IEEE Engineering in Medicine and Biology Magazine

Publication Stats

46 Citations
55.52 Total Impact Points


  • 1995-2009
    • Tianjin University
      • • State Key Laboratory of Precision Measurement Technology and Instruments
      • • School of Precision Instrument and Opto-Electronics Engineering
      • • Department of Precision Instrument Engineering
      T’ien-ching-shih, Tianjin Shi, China