检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

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

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

63 篇 会议
1 篇 期刊文献

馆藏范围

64 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

14 篇 工学
- 11 篇 电子科学与技术（可...
- 6 篇 计算机科学与技术...
- 4 篇 电气工程
- 4 篇 软件工程
- 3 篇 机械工程
- 3 篇 冶金工程
- 3 篇 信息与通信工程
- 2 篇 材料科学与工程（可...
- 2 篇 化学工程与技术
- 1 篇 光学工程
- 1 篇 仪器科学与技术
5 篇 理学
- 4 篇 物理学
- 2 篇 数学
- 2 篇 统计学（可授理学、...
- 1 篇 化学
1 篇 管理学
- 1 篇 管理科学与工程(可...

主题

17 篇 computer archite...
16 篇 hardware
11 篇 adders
9 篇 power dissipatio...
6 篇 tools
6 篇 logic gates
6 篇 energy efficienc...
5 篇 video coding
5 篇 transistors
5 篇 energy consumpti...
5 篇 very large scale...
5 篇 measurement
4 篇 field programmab...
4 篇 finite impulse r...
4 篇 standards
3 篇 cmos integrated ...
3 篇 libraries
3 篇 memory managemen...
3 篇 proposals
3 篇 computational ef...

机构

9 篇 graduate program...
8 篇 graduate program...
7 篇 graduate program...
7 篇 graduate program...
5 篇 graduate program...
4 篇 graduate program...
4 篇 ceitec s.a. semi...
3 篇 graduate program...
3 篇 graduate program...
2 篇 graduate program...
2 篇 school of engine...
2 篇 video technology...
2 篇 graduate program...
2 篇 federal institut...
2 篇 inesc-id institu...
2 篇 physics institut...
1 篇 graduate program...
1 篇 graduate program...
1 篇 federal universi...
1 篇 institute for ad...

作者

38 篇 sergio bampi
18 篇 guilherme paim
9 篇 eduardo costa
6 篇 pedro t. l. pere...
6 篇 bampi sergio
6 篇 eduardo a. c. da...
6 篇 eduardo da costa
5 篇 brito juan pablo...
5 篇 tiago r. balen
4 篇 luciano agostini
4 篇 marcelo porto
4 篇 leandro m. g. ro...
4 篇 leonardo bandeir...
4 篇 bruno zatt
4 篇 mateus grellert
3 篇 altamiro susin
3 篇 sérgio almeida
3 篇 vladimir afonso
3 篇 fernanda lima ka...
3 篇 fabio benevenuti

语言

64 篇 英文

检索条件"机构=PGMicro - Graduate Program on Microelectronics"

共 64 条记录，以下是51-60 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

Energy-efficient Gaussian filter for image processing using approximate adder circuits

Energy-efficient Gaussian filter for image processing using ...

引用

IEEE International Conference on Electronics, Circuits and Systems (ICECS)

作者： R. Oliveira Julio Leonardo B. Soares E. A. C. Costa Sergio Bampi Graduate Program on Electronic Engineering and Computing Universidade Catolica de Pelotas Pelotas Rio Grande do Sul BR Graduate Program on Microelectronics (PGMicro) Federal University of Rio Grande do Sul (UFRGS) Pelotas / Porto Alegre Brazil Graduate Program on Electronic Engineering and Computing Catholic University of Pelotas (UCPEL) Graduate Program on Microelectronics (PGMicro) Universidade Federal do Rio Grande do Sul Porto Alegre RS BR

This paper proposes the use of approximate adder circuits for 3×3 and 5×5 Gaussian filter implementations. The Gaussian filter is a convolution operator which is used to blur images and to remove noise, whose convolution implementation can be designed in hardware using only shifts and addition operations. In this work we evaluate the levels of approximations in computing or loss of accuracy in the arithmetic dataflow that the Gaussian filter can tolerate for a set of eight images. Our work deals with different levels of approximation in Ripple Carry Adders (RCA) which are part of the Gaussian filters adder tree implemented in hardware, and later compared to the best precise implementation of the same filter. Our results show an average energy savings of up to 40% and 25% for the approximate 3×3 and 5×5 Gaussian filters, respectively, without compromising the overall filtered images quality.

关键词： Adders Finite impulse response filters Kernel Energy efficiency Convolution Energy consumption Image processing

来源：评论

学校读者我要写书评

暂无评论

Within-die and die-to-die variability on 65nm CMOS : oscillators experimental results

Within-die and die-to-die variability on 65nm CMOS : oscilla...

引用

European Workshop on CMOS Variability (VARI)

作者： Juan Pablo Martinez Brito Marcelo Lubaszewski Sergio Bampi CEITEC S.A. Semiconductors Porto Alegre Brazil Graduate Program on Microelectronics - PGMICRO - Informatics Institute Federal University of Rio Grande do Sul- UFRGS

This paper presents experimental data and analyses from the oscillation frequency of CMOS ring oscillators (ROs). The measurements are analyzed in order to separate the coefficient of variation (CV = σ/μ) behavior of both within-die (WID) process variations and Die-to-Die (D2D) process variations. Three different RO's sizes distributed over a total of 96 ROs per chip were measured in 32 different chip samples, all from a single MOSIS Multi-Project-wafer in a commercial 65nm CMOS process. All ROs were measured with varying power supply voltages, from nominal VDD (1.2V) down to nearthreshold (0.45V), resulting in a sample space of 18.432 points of interest. Statistical analysis results are shown regarding each RO stage size, the applied power supply and the correlation of both to the WID and D2D variations. The increase on D2D and WID coefficients of variations at the near-threshold supplies is very significant, as explained by increased delay variability at the moderate inversion regime of the FETs. The 96 test ROs occupy a total area of 200 x 480 μm 2 in each test chip.

关键词： Frequency measurement Ring oscillators Semiconductor device measurement Inverters Transistors CMOS integrated circuits Standards

来源：评论

学校读者我要写书评

暂无评论

Near-threshold computing for very wide frequency scaling: Approximate adders to rescue performance

Near-threshold computing for very wide frequency scaling: Ap...

引用

Annual IEEE Northeast Workshop on Circuits and Systems (NEWCAS)

作者： L. B. Soares Sergio Bampi A. L. R. Rosa E. A. C. Costa Graduate Program on Microelectronics (PGMicro) PPGC - Informatics Institute Federal University of Rio Grande do Sul (UFRGS) Catholic University of Pelotas (UCPEL) Porto Alegre Brazil

Near-threshold computing in CMOS is a promising alternative for any application which can tolerate very wide voltage-frequency scaling (VFS). Internet-of-Things (IoT) devices will operate in very different power-performance modes, from sub-MHz to peaks of hundreds of MHz. The nano-power range which is achievable in deca-nanometer CMOS at near-VT is the alternative we explore for VLSI circuits (8051 processor, filters, and ISCAS benchmark circuits). This paper proposes a method to design CMOS circuits for a wide dynamic range of VFS, and targets near-threshold for best efficiency. A standard-cell based design methodology specific for near-VT is demonstrated here in for a commercial 65nm CMOS process. Power and timing variability are characterized, so that variation-aware and yet ultra-low supply voltage designs are enabled. Our cell design method avoids unnecessary upsizing and it focus on near- and well above threshold regions of operation. For the study cases of medium complexity notch filter design (24kgates), and an 8051 compatible core (20kgates) we demonstrate 63X to 77X energy/operation savings for applications that tolerate ultra-wide frequency scaling (from hundreds of KHz to 1GHz) in their operating modes. The results were obtained using the minimal cycle time achievable at each supply voltage. The extremely low and highly-variable performance at sub- and near-VT have to be addressed by new logic design paradigms. In this paper we also exploit the use of approximate adders to increase the timing performance of a class of digital filter circuits, to enable compensating the performance loss inherent to near-VT operation in CMOS. Our results show that the effort to explore energy savings in low power optimized circuits through the approximate computing approach is validated with energy and worst path delay reductions up to 19.4% and 36.7% respectively, compared to the precise arithmetic implementation, without compromising the filters frequency response. Our a

关键词： Finite impulse response filters Adders CMOS integrated circuits Libraries Approximation methods Energy efficiency Timing

来源：评论

学校读者我要写书评

暂无评论

Approximate adder synthesis for area- and energy-efficient FIR filters in CMOS VLSI

Approximate adder synthesis for area- and energy-efficient F...

引用

Annual IEEE Northeast Workshop on Circuits and Systems (NEWCAS)

作者： Leonardo Bandeira Soares Sergio Bampi Eduardo Costa Graduate Program on Microelectronics (PGMicro) Federal University of Rio Grande do Sul (UFRGS) Porto Alegre Brazil Polytechnique Institute Catholic University of Pelotas (UCPEL) Pelotas Brazil

This paper proposes the synthesis of approximate adders to improve the area and energy efficiency of FIR filters implemented in CMOS. We demonstrate energy per sample savings and hardware area reduction in the filters with our design method. All savings are in addition to the improvements obtained on previously optimized digital filters in which state-of-the-art multiplierless multiple constant multiplication optimizations are included in the design method. Digital finite impulse response filters are largely used in multimedia systems which can tolerate levels of approximations in computing or loss of accuracy in the arithmetic dataflow. Our work deals with different levels of approximation in ripple-carry adders which are part of the filters implemented in hardware, fully synthesized in CMOS, and later compared to the best precise implementation of the same filter. Our results show that the effort to explore area and energy savings in low power optimized circuits through the approximate computing approach is validated with area and energy reductions up to 18.8% and 15.5% respectively, without compromising the filters frequency response or the Signal to Noise Ratio (SNR) of recorded 16-bit audio signals. Our approximate adder method enables a higher degree of area and energy efficiencies in CMOS VLSI filters.

关键词： Finite impulse response filters Adders Approximation methods Signal to noise ratio CMOS integrated circuits Energy efficiency

来源：评论

学校读者我要写书评

暂无评论

Numerical analysis of the harmonics influence on linear interpolation for Power Quality assessment

Numerical analysis of the harmonics influence on linear inte...

引用

International Conference on Harmonics and Quality of Power

作者： Cesar David Paredes Crovato Leonardo Bandeira Soares Sergio Bampi Electrical Engineering Graduate Program-PPGEE Feevale University Unisinos University Novo Hamburgo/Sao Lepoldo Brazil Microelectronics Graduate Program-PGMicro-Informatics Federal University of Rio Grande do Sul-UFRGS Porto Alegre Brazil

This paper presents a numerical analysis to determine the minimum sampling frequency for which a linear interpolation of AC Power signals can be reliably used in the digital domain, regarding the harmonics influence for Power Quality (PQ) assessment. The proposed approach of this paper is based on exhaustive simulations which take into account a large combination of distinct values for module and phase of the third and fifth harmonic components at a given range of sampling frequencies. Our results show that the linear interpolation produces spectrum module errors up to 33.38% for a sampling frequency of 250/32 kHz, while the module percentage error is up to 2.08% at 250/4 kHz. The main contribution of this work is to best determine the minimum sampling frequency that can be used, considering the presence of harmonics components, which makes the linear interpolation an efficient technique for PQ assessment. A minimum sampling frequency turns out to be advantageous for the digital signal processing performance and cost.

关键词： Harmonic analysis Interpolation IEC standards Power system harmonics Power quality Electromagnetic compatibility

来源：评论

学校读者我要写书评

暂无评论

Surface plasmon resonances of interacting metal nanoparticles in thin films: Extension of maxwell garnett theory

Surface plasmon resonances of interacting metal nanoparticle...

引用

Optical Interference Coatings, OIC 2013

作者： Menegotto, Thiago Horowitz, Flavio Physics Institute and Microelectronics Graduate Program IF-PGMicro-UFRGS Campus do Vale CP 15051 Porto Alegre RS 91501-970 Brazil

Effective medium theory for composite films was extended to include interaction between neighbor particles. Application to an Ag nanoparticles/silica film agreed well with measured transmittances around surface plasmo... 详细信息

ISBN: (纸本)9781557529701

关键词： Surface plasmon resonance

来源：评论

学校读者我要写书评

暂无评论

RF system level design for a Spectrum Sensing Receiver

RF system level design for a Spectrum Sensing Receiver

引用

IEEE International Conference on Electronics, Circuits and Systems (ICECS)

作者： Filipe D. Baumgratz Sandro B. Ferreira Sergio Bampi Graduate Program on Microelectronics (PGMICRO) Rio Grande do Sul Federal University (UFRGS) Porto Alegre Brazil

This paper presents an RF system-level design of a Spectrum Sensing Direct Conversion Receiver for Cognitive Radios. An extension to the recently developed IEEE 802.22 standard from 54MHz to 4GHz is proposed to take advantage of additional underused frequency bands. The proposed architecture is designed to detect IEEE 802.22, IEEE 802.16, and LTE signals as incumbents. The receiver is composed of low noise amplifier (LNA), mixer and variable gain amplifier (VGA) with noise figure, 1dB compression point, second and third order intermodulation point, and gain defined through budget simulation. Results show that severe linearity requirements are imposed on such receiver due to the strong interferers entering in the wideband receiver.

关键词： Receivers Gain Mixers Linearity Sensors Noise WiMAX

来源：评论

学校读者我要写书评

暂无评论

A fast EMD-based technique for Power Quality signals decomposition, compression, and time-frequency analysis

A fast EMD-based technique for Power Quality signals decompo...

引用

International Conference on Digital Signal Processing (DSP)

作者： Leonardo Bandeira Soares Sergio Bampi Cesar David Paredes Crovato Informatics Institute-Microelectronics Graduate Program (PGMicro) Federal University of Rio Grande do Sul Porto Alegre Brazil ICET/PPGE Feevale Univ. São Leopoldo Brazil

In this paper an EMD-based (Empirical Mode Decomposition) technique is proposed in order to improve the data compression and reconstructed signal accuracy trade-off for PQ (Power Quality) signals. We demonstrate that our technique saves computational cost and reduces the mode mixing problem when compared to the EEMD (Ensemble EMD) and traditional EMD, respectively. After simulations with recorded power line test-cases, we compare our results with DWT (Discrete Wavelet Transform), and both traditional and EEMD. Results have shown that our technique outperforms the DWT in both data compression ratio and reconstruction accuracy metrics. Moreover, we analyze the balance between computational costs and mode mixing reduction for the three EMD techniques.

关键词： Discrete wavelet transforms Computational efficiency Accuracy Time-frequency analysis Wavelet analysis Splines (mathematics)

来源：评论

学校读者我要写书评

暂无评论

A 50MHz-1GHz wideband low noise amplifier in 130nm CMOS technology

A 50MHz-1GHz wideband low noise amplifier in 130nm CMOS tech...

引用

2012 25th Symposium on Integrated Circuits and Systems Design, SBCCI 2012

作者： Pimentel, Henrique Luiz Andrade Bampi, Sergio PGMICRO - Graduate Program on Microelectronics Universidade Federal do Rio Grande do Sul Porto Alegre RS Brazil

ISBN: (纸本)9781467326087

This paper presents the design of a differential wideband LNA with inherent limitations of low noise figure in a large frequency range using a commercial 130nm RF CMOS process. This circuit is to be applied to IEEE 802.22 Cognitive Radio (CR) applications. The design is based on the noise-canceling technique, with an inductorless solution, showing that this technique effectively reduces the noise figure over the desired frequency range with moderate power consumption and a small die area. The wideband LNA covers the frequency range from 50MHz to 1GHz, achieving a noise figure of 3dB to 4dB, a gain of HdB to 12dB, and an input/output return loss lower than -12dB. The input IP3 and input P1dB at 580MHz are above 0dBm and -10dBm, respectively. It consumes 46.5mW from a 1.5V supply and occupies an active area of 0.056mm2. ©2012 IEEE.

关键词： Low noise amplifiers

来源：评论

学校读者我要写书评

暂无评论

Impact and optimization of lithography-aware regular layout in digital circuit design

Impact and optimization of lithography-aware regular layout ...

引用

IEEE International Conference on Computer Design: VLSI in Computers and Processors, (ICCD)

作者： Vinícius Dal Bem Paulo Butzen Felipe S. Marranghello André I. Reis Renato P. Ribas Graduate Program in Microelectronics (PGMicro) Federal University of Rio Grande do Sul Porto Alegre Brazil Center of Computational Science Federal University of Rio Grande Rio Grande Brazil

Regular fabrics are expected to mitigate manufacturing process variations, increasing fabrication yield in deep sub-micron CMOS technologies. This paper presents an extensive analysis of aspects involved in the optimization of regular fabric (based) designs. The choice of the most efficient regular fabric design strategy depends on the area overhead and circuit performance degradation, which may vary according the fabric pattern optimization possibilities. Yield improvements have to be traded-off against area and performance losses due to regular design rules. This paper evaluates the losses introduced by using regular fabrics. Several benchmark circuits have been mapped over different regular layout templates through specific cell libraries built for this purpose. Results have demonstrated that the design impact is quite manageable by choosing appropriately the fabric pattern or template.

关键词： Transistors Libraries Logic gates Fabrics Layout Benchmark testing Optimization

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共7页 << < 1 2 3 4 5 6 7 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

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：