Research for detecting or obtaining radionuclide by gamma energy spectrum data acquisition and process system is one of the key issues about intelligent measurement of gamma-ray spectrum. For this reason, a software a...Research for detecting or obtaining radionuclide by gamma energy spectrum data acquisition and process system is one of the key issues about intelligent measurement of gamma-ray spectrum. For this reason, a software and hardware implementation schematic design based on ARM ( Advanced RISC Machines) + DSP ( Digital Signal Processor) architecture for gamma energy spectrum data acquisition and processing system is proposed. The paper discusses in detail some key technologies such as communication interface design between microcontroller ARM and digital signal processor DSP,distribution scheduling under multi-task in the ARM-Linux,DSP handling procedures for multi-channel A / D high-speed sample. At the same time,because the traditional Gaussian fitting to determine the boundary of peak is not ideal,it puts forward a weighting factor of Gaussian function least squares fitting realize boundary determined. Finally gamma-spectrum data from sodium iodide NaI( TI) scintillation detector is tested and processed in the new system. The results show that gamma energy spectrum data acquisition and process system is perfect functionality, stable and convergence in unimodal. Compared with data from conventional energy spectrometers,the system can keep better energy resolution in a wide range of pulse pass rate.展开更多
This paper proposed a general purpose real-time image processing system based on a flexible DSP-based Network, which is implemented by a high bandwidth communication channel, links. The links is realized using FPGA an...This paper proposed a general purpose real-time image processing system based on a flexible DSP-based Network, which is implemented by a high bandwidth communication channel, links. The links is realized using FPGA and provides a bandwidth of 12. 8 Gbit/s. Using the links, The topologic of multi-DSP system can be changed online to meet the variabilities of the parallel algorithm of image processing. The system can be assembled with utmost tens of boards and maintain the high communication speed. Analysis of the system adaptivity to image processing is testified followed by actual results. Key words real-time image processing - multi-DSP - flexible - scalable - FPGA - links CLC number TP 303 Foundation item: Supported by the National Natural Science Foundation of China (60135020)Biography: MAO Hai-cen(1973-), male, Ph.D. candidate, research direction: artificial intelligence, expert system, pattern recognition and image processing展开更多
A discrete model is set up for High Resolution Range Profile (HRRP) of an extended target and the model of echo from an extended target for a Stepped Chirp Radar (SCR) is proposed. The effect of target motion on a ran...A discrete model is set up for High Resolution Range Profile (HRRP) of an extended target and the model of echo from an extended target for a Stepped Chirp Radar (SCR) is proposed. The effect of target motion on a range profile is thoroughly analyzed, and based on which precision re- quirement is developed for motion compensation. By studying the time domain correlation and the rule based on the least burst error, a motion compensation algorithm which satisfies the project requirement is presented, and the cyber-emulation confirms the conclusion. At last the processor is designed by using DSP devices to realize motion compensation and target recognition.展开更多
To improve the quality of outstanding products like automobile steel sheet etc.,Baosteel has spared no efforts to the studying and application of Baosteel integrated process control(BPC ) and diagnosis technology.In t...To improve the quality of outstanding products like automobile steel sheet etc.,Baosteel has spared no efforts to the studying and application of Baosteel integrated process control(BPC ) and diagnosis technology.In the light of the running mode of integrated process control,analysis and diagnosis,Baosteel has realized the full process including steel making,hot-rolling,cold-rolling data traceability.The research and implementation practice of the BPC systems,which specialized on iron and steel manufacturing process,mainly based on the key input variables(KIV) and keyoutput variables(KOV),has been constructed on the plant level and corporate level.Based on the BPC system,Baosteel has established a data processing platform to monitor and analysis the process data,puts forward a efficient data gathering technology,which directly gather the data from the cross-platform of different kinds of systems,such as the plant level process computer,PLC, DCS,PCS etc.In the mean time,a unique mass data processing technology has also been developed.The system can be used to reveal the latent rules between KIV and KOV during the melting and rolling of steel products.This artcal takes the cold products for example to explain the model establishing,applying and optimizing the design between the KIV and the KOV,aims to advance the products capability.During recent years,the BPC technology has been gradually developed from the point to the line,from the line to covered the plane,it has integrated the information technology,the statistical process control technology,the quality diagnosis technology into the steel products integrated management.The BPC system has been developed as a product quality management technology fulfilled with characteristic elements and efficiency,a unique path to continuously enhance the steel products performance.展开更多
The Orthogonal Frequency Division Multiplexing (OFDM) system is already used in commercial applications and is capable to deal with Intersymbolic Interference (ISI) caused by multipath channels. This system gained pop...The Orthogonal Frequency Division Multiplexing (OFDM) system is already used in commercial applications and is capable to deal with Intersymbolic Interference (ISI) caused by multipath channels. This system gained popularity after the application of the Fast Fourier Transform (FFT) and its inverse (IFFT) to modulate the signal in many subcarriers. This paper discusses implementation aspects of an OFDM system;such system is characterized by considering real constraints, including the memory consumption and the processing time. The OFDM modulator, channel samples and OFDM demodulator were implemented entirely in the DSP TMS320C6678 platform. As a proof-of-concept, a 256-QAM OFDM BER performance is compared with theoretical values. Moreover, the memory size is not demanding, consuming very few resources. It was observed a very high number of DSP clock cycles needed for the OFDM signal modulation, corresponding to more than 4 times the number used in demodulating the signal.展开更多
This paper sets to explore management perceptions regarding the impact of operational process factors on strategy implementation in microfinance organisations in Kenya.Small and medium enterprises(SMEs)play a critical...This paper sets to explore management perceptions regarding the impact of operational process factors on strategy implementation in microfinance organisations in Kenya.Small and medium enterprises(SMEs)play a critical role in developing countries as a source of employment creation and a basis for industrialization.However,the sector receives inadequate financial support from commercial banks as it is considered to bear high risks and operational costs associate with lending small loan amounts.Microfinance organisations(MFOs)that serve this sector will need to expand their operations to increase their outreach to SMEs.Formulation and implementation of competitive strategies will enable MFOs to achieve growth and sustainability.Content,context and operational process factors appear to have a significance positive relationship to the level of strategy implementation.This paper is focusing on operational process factors impacting on strategy implementation and is part of a full study on the topic of strategy implementation in MFOs.Comprehensive literature review provided the theoretical framework for the study.Primary data were collected by means of a survey obtaining 300 self-administered questionnaires from managers in 135 MFOs in Kenya.The study revealed that the level of strategy implementation in MFOs in Kenya is moderate to high.This study has revealed that the operational process category of factors is more significant to the level of strategy implementation than content and context factors.Five operational process factors critical to strategy implementation include:operational planning and monitoring,management control systems,people-strategy fit,teamwork,and effective communication.Further,the level of strategy implementation has significance positive influence to MFOs’financial sustainability and outreach.Practical guidelines are provided to assist MFOs in developing countries to improve the level of strategy implementation by focusing on operational process factors.展开更多
Thailand was implementing the policy of HIV/A1DS prevention in risky group, The youth is one of groups with sexual risk behaviors to HIV/AIDS. This research aims to elucidate the process of policy implementation at th...Thailand was implementing the policy of HIV/A1DS prevention in risky group, The youth is one of groups with sexual risk behaviors to HIV/AIDS. This research aims to elucidate the process of policy implementation at the national and regional levels, and to explain the obstacles of policy implementation. The method was qualitative study. The stakeholders were 88 people. The data were collected by in-depth interview and coded by a computer program. The policy was transferred from the national AIDS committee to the Department of Disease Control （DDC） and provincial level. This process was lacking budget support. The provincial AIDS committee was monitored by the provincial health office, cooperating with the central level. The major role was to transfer the policy to the school, Local Administration Organization （LAO） and associated organization. The activity was funded by provincial, global funds, and outside sources. In the community, the core activities were AIDS knowledge, establishing core youth groups, and building the network of AIDS. The obstacle at the national level was changing the policy process from one with a budget to one without budget. In the area of practice, the AIDS problem and the effects of the risk behavior in youth groups were slightly concerned.展开更多
This is a paper about laser gyro sign a l processing circuit which is designed based on field-programmable gate array(FPGA) and digital signal processor(DSP).Through a pre-amplifier circuit,FPGA and DSP,a weak current...This is a paper about laser gyro sign a l processing circuit which is designed based on field-programmable gate array(FPGA) and digital signal processor(DSP).Through a pre-amplifier circuit,FPGA and DSP,a weak current signal is converted and transferred,then sent to the computer to display the final results.Through the laser gyro performance te sting,the obtained results coincide with those of the existing methods.Thus th e d esigned circuit realizes the function of laser gyro signal processing.展开更多
In this paper, we present an optimized design method for high-speed embedded image processing system using 32 bit floating-point Digital Signal Processor （DSP） and Complex Programmable Logic Device （CPLD）. The DSP...In this paper, we present an optimized design method for high-speed embedded image processing system using 32 bit floating-point Digital Signal Processor （DSP） and Complex Programmable Logic Device （CPLD）. The DSP acts as the main processor of the system： executes digital image processing algorithms and operates other devices such as image sensor and CPLD. The CPLD is used to acquire images and achieve complex logic control of the whole system. Some key technologies are introduced to enhance the performance of our system. In particular, the use of DSP/BIOS tool to develop DSP applications makes our program run much more efficiently. As a result, this system can provide an excellent computing platform not only for executing complex image processing algorithms, but also for other digital signal processing or multi-channel data collection by choosing different sensors or Analog-to-Digital （A/D） converters.展开更多
This paper analyzes the current situation of the whole process engineering consultation, and holds that the existing management system and project supervision mode hinder the development of the whole process engineeri...This paper analyzes the current situation of the whole process engineering consultation, and holds that the existing management system and project supervision mode hinder the development of the whole process engineering consultation to a certain extent. Due to the different concentration of different business types, engineering consulting enterprises often limit their business integration and expansion. The local management department is cautious about the whole process of engineering consultation promotion for the management thinking of minimum risk. Combined with the above problems, this paper analyzes the realization path of the whole process engineering consulting, expounds the project implementation and enterprise cultivation, and gives corresponding countermeasures and suggestions for different subjects.展开更多
For a long time,the education work in China has been deeply affected by the target model.With the development of the times and the continuous reform of education,the impact of process model on education has become inc...For a long time,the education work in China has been deeply affected by the target model.With the development of the times and the continuous reform of education,the impact of process model on education has become increasingly prominent.It does not only give full play to the internal value of the curriculum content,but also cultivate students5 personality and subjectivity.Taking the middle school physical education curriculum design as an example,this paper explores the practical application of process model for reference.展开更多
Based on the Berlekamp-Massy （BM） algorithm for Reed-Solomon（RS） decoding, an improved version is proposed, which focuses on how to find the error locator polynomial using least iterative operations. The condition...Based on the Berlekamp-Massy （BM） algorithm for Reed-Solomon（RS） decoding, an improved version is proposed, which focuses on how to find the error locator polynomial using least iterative operations. The conditions to end the iterative operations is derived. As a special case, criterion of only one error symbol in one received codeword is derived as well. Steps are listed concerning the implementation of the improved iterative decoding algorithm, which is carried out as software on the platform of TI＇s C6416 DSP. Decoding performance and decoding-delay of both improved and original algorithms under different （n,k） conditions are simulated. The results of simulations demonstrate that the improved algorithm has less computational complexity when the number of errors in a received codeword is relatively small. Therefore, in channels with low noise power spectrum density, the improved algorithm results in less decoding-delay than BM algorithm.展开更多
随着广播电视行业的快速发展,音频信号的质量成为提升视听体验的关键因素。传统音频处理方法已无法满足现代广播电视系统对音频清晰度、动态范围及噪声控制的高要求,数字信号处理(Digital Signal Processing,DSP)技术以其强大的计算能...随着广播电视行业的快速发展,音频信号的质量成为提升视听体验的关键因素。传统音频处理方法已无法满足现代广播电视系统对音频清晰度、动态范围及噪声控制的高要求,数字信号处理(Digital Signal Processing,DSP)技术以其强大的计算能力和灵活的处理方式成为解决此问题的有效手段。重点研究DSP技术在广播电视音频信号处理中的优化措施,探讨优化噪声抑制算法、动态范围压缩、增强音频均衡处理以及集成回声消除算法等技术的融合应用。这些技术的有效结合能够显著减少噪声对音频质量的干扰,精确检测音频信号的动态变化,确保音频信号的均衡,并有效消除音频信号中的回声。展开更多
基于数字信号处理(Digital Signal Processing,DSP)技术,研究播音主持声音处理的关键技术,包括预处理与降噪、音色美化与均衡、动态范围控制。实验表明,应用基于DSP技术的播音主持声音处理技术,可使播音主持的声音更加清晰、悦耳且稳定...基于数字信号处理(Digital Signal Processing,DSP)技术,研究播音主持声音处理的关键技术,包括预处理与降噪、音色美化与均衡、动态范围控制。实验表明,应用基于DSP技术的播音主持声音处理技术,可使播音主持的声音更加清晰、悦耳且稳定,有效提高不同场景下的声音质量。展开更多
基金Sponsored by the Natural Science Fundation of Jiangxi Province(Grant No.20114BAB211026 and No.20122BA-B201028)Open Science Fund from Key Laboratory of Radioactive Geology and Exploration Technology Fundamental Science for National Defense,East China Institute of Technology(Grant No.2010RGET11)
文摘Research for detecting or obtaining radionuclide by gamma energy spectrum data acquisition and process system is one of the key issues about intelligent measurement of gamma-ray spectrum. For this reason, a software and hardware implementation schematic design based on ARM ( Advanced RISC Machines) + DSP ( Digital Signal Processor) architecture for gamma energy spectrum data acquisition and processing system is proposed. The paper discusses in detail some key technologies such as communication interface design between microcontroller ARM and digital signal processor DSP,distribution scheduling under multi-task in the ARM-Linux,DSP handling procedures for multi-channel A / D high-speed sample. At the same time,because the traditional Gaussian fitting to determine the boundary of peak is not ideal,it puts forward a weighting factor of Gaussian function least squares fitting realize boundary determined. Finally gamma-spectrum data from sodium iodide NaI( TI) scintillation detector is tested and processed in the new system. The results show that gamma energy spectrum data acquisition and process system is perfect functionality, stable and convergence in unimodal. Compared with data from conventional energy spectrometers,the system can keep better energy resolution in a wide range of pulse pass rate.
文摘This paper proposed a general purpose real-time image processing system based on a flexible DSP-based Network, which is implemented by a high bandwidth communication channel, links. The links is realized using FPGA and provides a bandwidth of 12. 8 Gbit/s. Using the links, The topologic of multi-DSP system can be changed online to meet the variabilities of the parallel algorithm of image processing. The system can be assembled with utmost tens of boards and maintain the high communication speed. Analysis of the system adaptivity to image processing is testified followed by actual results. Key words real-time image processing - multi-DSP - flexible - scalable - FPGA - links CLC number TP 303 Foundation item: Supported by the National Natural Science Foundation of China (60135020)Biography: MAO Hai-cen(1973-), male, Ph.D. candidate, research direction: artificial intelligence, expert system, pattern recognition and image processing
基金Supported by National Natural Science Foundation of China (No.60402032).
文摘A discrete model is set up for High Resolution Range Profile (HRRP) of an extended target and the model of echo from an extended target for a Stepped Chirp Radar (SCR) is proposed. The effect of target motion on a range profile is thoroughly analyzed, and based on which precision re- quirement is developed for motion compensation. By studying the time domain correlation and the rule based on the least burst error, a motion compensation algorithm which satisfies the project requirement is presented, and the cyber-emulation confirms the conclusion. At last the processor is designed by using DSP devices to realize motion compensation and target recognition.
文摘To improve the quality of outstanding products like automobile steel sheet etc.,Baosteel has spared no efforts to the studying and application of Baosteel integrated process control(BPC ) and diagnosis technology.In the light of the running mode of integrated process control,analysis and diagnosis,Baosteel has realized the full process including steel making,hot-rolling,cold-rolling data traceability.The research and implementation practice of the BPC systems,which specialized on iron and steel manufacturing process,mainly based on the key input variables(KIV) and keyoutput variables(KOV),has been constructed on the plant level and corporate level.Based on the BPC system,Baosteel has established a data processing platform to monitor and analysis the process data,puts forward a efficient data gathering technology,which directly gather the data from the cross-platform of different kinds of systems,such as the plant level process computer,PLC, DCS,PCS etc.In the mean time,a unique mass data processing technology has also been developed.The system can be used to reveal the latent rules between KIV and KOV during the melting and rolling of steel products.This artcal takes the cold products for example to explain the model establishing,applying and optimizing the design between the KIV and the KOV,aims to advance the products capability.During recent years,the BPC technology has been gradually developed from the point to the line,from the line to covered the plane,it has integrated the information technology,the statistical process control technology,the quality diagnosis technology into the steel products integrated management.The BPC system has been developed as a product quality management technology fulfilled with characteristic elements and efficiency,a unique path to continuously enhance the steel products performance.
文摘The Orthogonal Frequency Division Multiplexing (OFDM) system is already used in commercial applications and is capable to deal with Intersymbolic Interference (ISI) caused by multipath channels. This system gained popularity after the application of the Fast Fourier Transform (FFT) and its inverse (IFFT) to modulate the signal in many subcarriers. This paper discusses implementation aspects of an OFDM system;such system is characterized by considering real constraints, including the memory consumption and the processing time. The OFDM modulator, channel samples and OFDM demodulator were implemented entirely in the DSP TMS320C6678 platform. As a proof-of-concept, a 256-QAM OFDM BER performance is compared with theoretical values. Moreover, the memory size is not demanding, consuming very few resources. It was observed a very high number of DSP clock cycles needed for the OFDM signal modulation, corresponding to more than 4 times the number used in demodulating the signal.
文摘This paper sets to explore management perceptions regarding the impact of operational process factors on strategy implementation in microfinance organisations in Kenya.Small and medium enterprises(SMEs)play a critical role in developing countries as a source of employment creation and a basis for industrialization.However,the sector receives inadequate financial support from commercial banks as it is considered to bear high risks and operational costs associate with lending small loan amounts.Microfinance organisations(MFOs)that serve this sector will need to expand their operations to increase their outreach to SMEs.Formulation and implementation of competitive strategies will enable MFOs to achieve growth and sustainability.Content,context and operational process factors appear to have a significance positive relationship to the level of strategy implementation.This paper is focusing on operational process factors impacting on strategy implementation and is part of a full study on the topic of strategy implementation in MFOs.Comprehensive literature review provided the theoretical framework for the study.Primary data were collected by means of a survey obtaining 300 self-administered questionnaires from managers in 135 MFOs in Kenya.The study revealed that the level of strategy implementation in MFOs in Kenya is moderate to high.This study has revealed that the operational process category of factors is more significant to the level of strategy implementation than content and context factors.Five operational process factors critical to strategy implementation include:operational planning and monitoring,management control systems,people-strategy fit,teamwork,and effective communication.Further,the level of strategy implementation has significance positive influence to MFOs’financial sustainability and outreach.Practical guidelines are provided to assist MFOs in developing countries to improve the level of strategy implementation by focusing on operational process factors.
文摘Thailand was implementing the policy of HIV/A1DS prevention in risky group, The youth is one of groups with sexual risk behaviors to HIV/AIDS. This research aims to elucidate the process of policy implementation at the national and regional levels, and to explain the obstacles of policy implementation. The method was qualitative study. The stakeholders were 88 people. The data were collected by in-depth interview and coded by a computer program. The policy was transferred from the national AIDS committee to the Department of Disease Control （DDC） and provincial level. This process was lacking budget support. The provincial AIDS committee was monitored by the provincial health office, cooperating with the central level. The major role was to transfer the policy to the school, Local Administration Organization （LAO） and associated organization. The activity was funded by provincial, global funds, and outside sources. In the community, the core activities were AIDS knowledge, establishing core youth groups, and building the network of AIDS. The obstacle at the national level was changing the policy process from one with a budget to one without budget. In the area of practice, the AIDS problem and the effects of the risk behavior in youth groups were slightly concerned.
文摘This is a paper about laser gyro sign a l processing circuit which is designed based on field-programmable gate array(FPGA) and digital signal processor(DSP).Through a pre-amplifier circuit,FPGA and DSP,a weak current signal is converted and transferred,then sent to the computer to display the final results.Through the laser gyro performance te sting,the obtained results coincide with those of the existing methods.Thus th e d esigned circuit realizes the function of laser gyro signal processing.
基金Supported by the National Natural Science Foundation of China (No.60472046)
文摘In this paper, we present an optimized design method for high-speed embedded image processing system using 32 bit floating-point Digital Signal Processor （DSP） and Complex Programmable Logic Device （CPLD）. The DSP acts as the main processor of the system： executes digital image processing algorithms and operates other devices such as image sensor and CPLD. The CPLD is used to acquire images and achieve complex logic control of the whole system. Some key technologies are introduced to enhance the performance of our system. In particular, the use of DSP/BIOS tool to develop DSP applications makes our program run much more efficiently. As a result, this system can provide an excellent computing platform not only for executing complex image processing algorithms, but also for other digital signal processing or multi-channel data collection by choosing different sensors or Analog-to-Digital （A/D） converters.
文摘This paper analyzes the current situation of the whole process engineering consultation, and holds that the existing management system and project supervision mode hinder the development of the whole process engineering consultation to a certain extent. Due to the different concentration of different business types, engineering consulting enterprises often limit their business integration and expansion. The local management department is cautious about the whole process of engineering consultation promotion for the management thinking of minimum risk. Combined with the above problems, this paper analyzes the realization path of the whole process engineering consulting, expounds the project implementation and enterprise cultivation, and gives corresponding countermeasures and suggestions for different subjects.
文摘For a long time,the education work in China has been deeply affected by the target model.With the development of the times and the continuous reform of education,the impact of process model on education has become increasingly prominent.It does not only give full play to the internal value of the curriculum content,but also cultivate students5 personality and subjectivity.Taking the middle school physical education curriculum design as an example,this paper explores the practical application of process model for reference.
基金Sponsored by the National High Technology Research and Development Program of China ("863"Program) (2007AA01Z293)
文摘Based on the Berlekamp-Massy （BM） algorithm for Reed-Solomon（RS） decoding, an improved version is proposed, which focuses on how to find the error locator polynomial using least iterative operations. The conditions to end the iterative operations is derived. As a special case, criterion of only one error symbol in one received codeword is derived as well. Steps are listed concerning the implementation of the improved iterative decoding algorithm, which is carried out as software on the platform of TI＇s C6416 DSP. Decoding performance and decoding-delay of both improved and original algorithms under different （n,k） conditions are simulated. The results of simulations demonstrate that the improved algorithm has less computational complexity when the number of errors in a received codeword is relatively small. Therefore, in channels with low noise power spectrum density, the improved algorithm results in less decoding-delay than BM algorithm.
文摘随着广播电视行业的快速发展,音频信号的质量成为提升视听体验的关键因素。传统音频处理方法已无法满足现代广播电视系统对音频清晰度、动态范围及噪声控制的高要求,数字信号处理(Digital Signal Processing,DSP)技术以其强大的计算能力和灵活的处理方式成为解决此问题的有效手段。重点研究DSP技术在广播电视音频信号处理中的优化措施,探讨优化噪声抑制算法、动态范围压缩、增强音频均衡处理以及集成回声消除算法等技术的融合应用。这些技术的有效结合能够显著减少噪声对音频质量的干扰,精确检测音频信号的动态变化,确保音频信号的均衡,并有效消除音频信号中的回声。
