检索结果-内蒙古大学图书馆

2nd International Conference on Computer Information Science and Application technology, CISAT 2019

作者： Yue, Lei Niu, Pengfei Fang, Yifang Han, Zhonghua Sensor and Network Control Center Instrumentation Technology and Economy Institute Beijing100055 China Information Center Instrumentation Technology and Economy Institute Beijing100055 China Shenyang Institute of Automation Chinese Academy of Sciences Shenyang110016 China Faculty of Information and Control Engineering Shenyang Jianzhu University Shenyang110016 China

Researchers of information technology (IT) have often suggested that there is no clear relevance between the IT investment and return on investment (ROI) of enterprises. This phenomenon is called "productivity paradox". However, research on smart manufacturing capability maturity did not reflect empirically the fact that enterprises rarely benefit from information systems. Therefore, the aim of this article attempts to explore how humans and technologies are related and propose a smart manufacturing maturity assessment framework that can reveal the interaction between humans and technologies. This research addressed two questions, (a) what domains can be identified for smart manufacturing, and (b) how to harmonize all of the technical and social factors affecting maturity and benefits. A complicated concept "socio-technical system" was surveyed for interpreting how enterprises benefit from technologies. Results of this study showed a smart manufacturing maturity assessment framework from the socio-technical perspective. As an explanation, the understanding of manufacturing operations management (MOM) capability maturity model (CMM) within the framework in the case study and its results were presented. To conclude, this study may be regarded as a meta-model or reference model for specific maturity models, as well as has the merit of offering valuable insights into the maturity assessment. © Published under licence by IOP Publishing Ltd.

关键词： Flow control

来源：评论

学校读者我要写书评

暂无评论

Design of automatic frequency calibration used in the PLL frequency synthesizer for 2.4GHz WSN

Design of automatic frequency calibration used in the PLL fr...

引用

2012 IEEE MTT-S International Microwave Workshop Series on Millimeter Wave Wireless technology and Applications, IMWS 2012

作者： Fan, Xiangning Tang, Haihong Yu, Lu Li, Bin Institute of RF- and OE-ICs School of Information Science and Engineering Southeast University Nanjing 210096 China School of Integrated Circuits Southeast University Nanjing 210096 China Sensor Network Technology Research Center Southeast University Wuxi 214135 China

ISBN: (纸本)9781467309028

In this paper, an open looped fast automatic frequency calibration (AFC) unit used in 2.4GHz CMOS integer-N phase-locked loop (PLL) frequency synthesizer (FS) for IEEE802.15.4/ZigBee wireless sensor networks (WSN) is presented. The calibration method accomplishes efficient search for an optimum discrete tuning curve of the voltage controlled oscillator (VCO) among a group of frequency sub-bands. The pre-simulation, layout design and post-simulation results are given. Post simulation results show that the AFC performs well. © 2012 IEEE.

关键词： Wireless sensor networks

来源：评论

学校读者我要写书评

暂无评论

Experimental measurement-device-independent quantum key distribution with uncharacterized sources

Experimental measurement-device-independent quantum key dist...

引用

OSA Quantum 2.0 Conference, QUANTUM 2020

作者： Wang, Qin Institute of quantum information and technology Nanjing University of Posts and Telecommunications Nanjing210003 China "Broadband Wireless Communication and Sensor Network Technology" Key Lab of Ministry of Education NUPT Nanjing210003 China "Telecommunication and Networks" National Engineering Research Center NUPT Nanjing210003 China

We carry out a proof-of-principle demonstration of three-state uncharacterized measurement-device-independent quantum key distribution over 170 km, achieving the longest transmission distance under the same security l... 详细信息

ISBN: (纸本)9781557528209

关键词： Quantum cryptography

来源：评论

学校读者我要写书评

暂无评论

A high speed frequency divider in 0.18μm CMOS for wireless sensor networks

A high speed frequency divider in 0.18μm CMOS for wireless ...

引用

2012 IEEE MTT-S International Microwave Workshop Series on Millimeter Wave Wireless technology and Applications, IMWS 2012

作者： Fan, Xiangning Li, Bin Du, Yanqiang Wang, Yujie Yu, Lu Institute of RF- and OE-ICs School of Information Science and Engineering Southeast University Nanjing 210096 China School of Integrated Circuits Southeast University Nanjing 210096 China Sensor Network Technology Research Center Southeast University Wuxi 214135 China

ISBN: (纸本)9781467309028

This paper presents a 1V low-voltage high speed frequency divider-by-2 which is fabricated in a standard 0.18μm TSMC RF CMOS process. Employing parallel current switching topology, the 2:1 frequency divider operates up to 6.5GHz while consuming 4.64mA current with test buffers at a supply voltage of 1V, and the chip area of the core circuit is 0.065x0.055mm2. © 2012 IEEE.

关键词： Wireless sensor networks

来源：评论

学校读者我要写书评

暂无评论

Design of Temperature Measurement and Identification System based on STM32 22

Design of Temperature Measurement and Identification System ...

引用

2022 International Workshop on Control Sciences and Automation, WCSA 2022

作者： Hu, Xusheng Liu, Juan Tao, Binbin Ma'anshan Engineering Technology Research Center for Wireless Sensor Network and IntelliSense Ma'anshan243031 China Anhui Provincial Engineering Laboratory on Information Fusion and Control of Intelligent Robot Anhui Wuhu241002 China Ma'anshan Technical College Ma'anshan243030 China

ISBN: (纸本)9781450389396

In order to carry out contactless temperature measurement and identification and improve the speed of authentication, a temperature measurement and identification system based on STM32 is designed. Infrared temperature sensor is used for contactless temperature acquisition and measurement, and openmv system is used for identification. Openmv accurately recognizes the face and transmits the data to the single chip microcomputer, so as to control the LED lamp and buzzer for corresponding data output and alarm. The infrared temperature sensor collects the temperature and accurately displays it on the OLED screen through the single chip microcomputer. The experimental data show that the temperature control accuracy is ± 0.7 g, the success rate of identity recognition is higher than 80%, and the temperature and identity recognition effect are obvious. © 2022 ACM.

关键词： Temperature measurement

来源：评论

学校读者我要写书评

暂无评论

0.18μm 4.8GHz CMOS 1V LC VCO for wireless sensor networks

0.18μm 4.8GHz CMOS 1V LC VCO for wireless sensor networks

引用

2012 IEEE MTT-S International Microwave Workshop Series on Millimeter Wave Wireless technology and Applications, IMWS 2012

作者： Fan, Xiangning Wei, Yan Li, Bin Wang, Yujie Institute of RF- and OE-ICs School of Information Science and Engineering Southeast University Nanjing 210096 China School of Integrated Circuits Southeast University Nanjing 210096 China Sensor Network Technology Research Center Southeast University Wuxi 214135 China

ISBN: (纸本)9781467309028

Wireless sensor network (WSN) can be widely used in many fields. Based on 0.18μm RF CMOS process, this paper presents a 4.8GHz 1V low phase noise LC voltage controlled oscillator (VCO) used in the frequency synthesizer for WSN applications. In order to work under 1V voltage, the LC VCO uses the structure of only one couple of NMOS differential negative resistances. The core circuit is biased by PMOS tail current to reduce sensitivity to power supply and achieve low phase noise, furthermore, it can also decrease power consumption. A 3 bit switch capacitor array is used for wide tuning range without worsen the phase noise performance. The output buffer uses common source structure. With 1V supply voltage, post simulation results show that the tuning range is from 4.61-5.47GHz, the worst phase noise at 1MHz and 3.5MHz offset is -115.1dBc/Hz and -126.2dBc/Hz respectively. And the chip area is 770μmx666μm. © 2012 IEEE.

关键词： Wireless sensor networks

来源：评论

学校读者我要写书评

暂无评论

CMOS phase frequency detector and charge pump for wireless sensor networks

CMOS phase frequency detector and charge pump for wireless s...

引用

2012 IEEE MTT-S International Microwave Workshop Series on Millimeter Wave Wireless technology and Applications, IMWS 2012

作者： Fan, Xiangning Li, Bin Yuan, Likai Wang, Yujie Institute of RF- and OE-ICs School of Information Science and Engineering Southeast University Nanjing 210096 China School of Integrated Circuits Southeast University Nanjing 210096 China Sensor Network Technology Research Center Southeast University Wuxi 214135 China

ISBN: (纸本)9781467309028

As the key blocks of PLL (phase locked loop) circuits, PFD (Phase Frequency Detector) is dominated to the precision and stability of system, whereas CP (Charge Pump) offers a wide scale of frequency capture scale and fast locked performance. The structure of PFD using transfer gate dynamic D flip-flops and the structure with a wide input scale error amplifier for CP had been presented to achieve a high performance. In the end, the chip was taped out in the process of TSMC 0.18μm CMOS. The post-simulation results show that the PFD has correct logic function, whereas the charge pump current is stable at 100μA in the output range of 0.2V-0.8V, and the current mismatch is less than 0.4μA at output voltage range of 0.2V-0.8V, with total power consumption of 3mW with the power supply of 1V. © 2012 IEEE.

关键词： CMOS integrated circuits

来源：评论

学校读者我要写书评

暂无评论

Power allocation optimization in MC-NOMA systems for maximizing weighted sum-rate 24

Power allocation optimization in MC-NOMA systems for maximiz...

引用

24th Asia-Pacific Conference on Communications, APCC 2018

作者： Chen, Ruilu Wang, Xiaoming Xu, Youyun School of Telecommunication and Information Engineering Nanjing Univ. of Posts and Telecom. Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing Univ. of Posts and Telecom. Nanjing China National Engineering Research Center of Comm. and Network Nanjing Univ. of Posts and Telecom. Nanjing China

ISBN: (纸本)9781538669280

In this paper, we investigate a power allocation scheme in downlink multi-carrier non-orthogonal multiple access (MC-NOMA) systems for maximizing weighted sum-rate. Taking user-priority into account, we add the weighting factors into the formulated optimization problem. Firstly, we give sufficient and necessary concavity conditions that should be satisfied by the proposed weighted sum-rate maximization problem. Then, for more generally non-concave case, we use a first order approximation to convert the optimization problem and provide an iterative power allocation algorithm to find the globally optimal solution. Simulation results show that our proposed algorithm is superior to orthogonal frequency division multiple access (OFDMA) scheme and average power allocation scheme. © 2018 IEEE.

关键词： Frequency division multiple access

来源：评论

学校读者我要写书评

暂无评论

Atomic switches of metallic point contacts by plasmonic heating

引用

Light(Science & Applications) 2019年第1期8卷 893-900页

作者： Weiqiang Zhang Hongshuang Liu Jinsheng Lu Lifa Ni Haitao Liu Qiang Li Min Qiu Bingqian Xu Takhee Lee Zhikai Zhao Xianghui Wang Maoning Wang Tao Wang Andreas Offenhausser Dirk Mayer Wang-Taek Hwang Dong Xiang Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology Key Laboratory of Optical Information Science and TechnologyInstitute of Modern OpticsCollege of Electronic Information and Optical EngineeringNankai University300350 TianjinChina State Key Laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang University310027 HangzhouChina College of Engineering University of GeorgiaAthensGA 30602USA Department of Physics and Astronomy and Institute of Applied PhysicsSeoul National UniversitySeoul 08826Korea Institute of Materials Research and Engineering A*STAR2 Fusionopolis WayInnovisSingapore 138634Singapore Institute of Complex Systems ICS-8BioelectronicsResearch Center Juelich and JARA Fundamentals of Future Information TechnologyJülich 52425Germany

Electronic switches with nanoscale dimensions satisfy an urgent demand for further device miniaturization.A recent heavily investigated approach for nanoswitches is the use of molecular junctions that employ photochromic molecules that toggle between two distinct *** contrast to the reports on this approach,we demonstrate that the conductance switch behavior can be realized with only a bare metallic contact without any molecules under light *** demonstrate that the conductance of bare metallic quantum contacts can be reversibly switched over eight orders of magnitude,which substantially exceeds the performance of molecular *** the switch process,the gap size between two electrodes can be precisely adjusted with subangstrom accuracy by controlling the light intensity or *** by simulations,we reveal a more general and straightforward mechanism for nanoswitching behavior,i.e.,atomic switches can be realized by the expansion of nanoelectrodes due to plasmonic heating.

关键词： metallic behavior illumination

来源：评论

学校读者我要写书评

暂无评论

Design of a low power 2GHz CMOS frequency divider for WSN applications

Design of a low power 2GHz CMOS frequency divider for WSN ap...

引用

2012 International Conference on Microwave and Millimeter Wave technology, ICMMT 2012

作者： Cao, Qinqing Li, Zhiqun Institute of RF and OE ICs Southeast University Nanjing 210096 China Engineering Research Center of RF-ICs and RF-Systems Ministry of Education Nanjing 210096 China Jiangsu Provincial Key Laboratory of Sensor Network Technology Southeast University Wuxi 214135 China

ISBN: (纸本)9781467321839

A 2 GHz programmable frequency divider is presented in this paper for Chinese and American band WSN applications. The divide ratio can be programmed from 720 to 960. The divider basically consists of a 15/16 dual-modulus prescaler and a programmable pulse-swallow counter. Forward phase switching technique is used to reduce power consumption and avoid glitches. Designed in 0.18-μm CMOS process, the 15/16 prescaler and pulse-swallow occupies a chip area of approximately 60 μm * 90 μm and 85 μm * 85 μm. The post-layout simulation shows that the divider can operate under input frequency ranging from 1GHz to 3GHz and consume 3.24 mW from a single 1.8V supply. © 2012 IEEE.

关键词： Phase locked loops

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：