• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 9
  • 2
  • 1
  • 1
  • Tagged with
  • 18
  • 12
  • 11
  • 10
  • 8
  • 7
  • 5
  • 4
  • 4
  • 4
  • 4
  • 3
  • 3
  • 3
  • 3
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Neadresné násilí na školách - kriminologický fenomén / Non-addressable school violence - criminological phenomenon

Vrána, Filip January 2013 (has links)
Non-addressable school violence - criminological phenomenon The purpose of the thesis is an analysis of non-addressable school violence, identifying it's roots, describe the perpetrators and the approaches used in fighting the problem, and lay down a characteristic of the youngest of them, a threat assessment program. The thesis is composed of three chapters, which are: Definition of non-addressable school violence, Current approaches to non-addressable school violence, Safe school iniciative and Implementing a threat assessment program. Each chapter is divided into subchapters according to the relevant issues. Chapter One consists of four parts. The first one deals with the definition of non-addressable school violence and the differences between it and the other types of violent behavior. The second one contains history of this phenomenon and how it changed in time. Third is about age of the perpetrators and the victimology and the last one deals with the effect of medialization. Second chapter is about current approaches used to describe non-addressable school violence, these are profiling, guided professional judgment, automated decision making and threat assessment. In the subchapters I argue pros and cons of all the approaches when used on the problém at hand. Third chapter is about "Safe...
2

Protein Microarray: "Theory" to "Real Practice"

Ng, Jin Kiat, Ajikumar, Parayil Kumaran, Lee, Jim Yang, Stephanopoulos, Gregory, Too, Heng-Phon 01 1900 (has links)
Fueled by ever-growing genomic information and rapid developments of proteomics–the large scale analysis of proteins and mapping its functional role has become one of the most important disciplines for characterizing complex cell function. For building functional linkages between the biomolecules, and for providing insight into the mechanisms of biological processes, last decade witnessed the exploration of combinatorial and chip technology for the detection of bimolecules in a high throughput and spatially addressable fashion. Among the various techniques developed, the protein chip technology has been rapid. Recently we demonstrated a new platform called “Spacially addressable protein array” (SAPA) to profile the ligand receptor interactions. To optimize the platform, the present study investigated various parameters such as the surface chemistry and role of additives for achieving high density and high-throughput detection with minimal nonspecific protein adsorption. In summary the present poster will address some of the critical challenges in protein micro array technology and the process of fine tuning to achieve the optimum system for solving real biological problems. / Singapore-MIT Alliance (SMA)
3

A Mini-invasive Low-power Measurement System of Bladder Pressure and A Self-disable Sense Technique for Content Addressable Memory

Wu, Jun-Han 15 July 2008 (has links)
The first topic of the thesis reveals a mini-invasive low-power measurement system for bladder pressure measurement. Not only can the mode of measurement be selected, the input range and amplification of instrumentation amplifier (IA) is also adjustable. The proposed system can measure the pressure in a bladder in a continuous mode. It also can monitor the pressure in a long-term mode with an automatic sleeping mechanism for power saving. The signal generated by the pressure sensor is sensed by an IA, which is then fed into the following ADC (analog-to-digital converter). The input range of the IA must be adjustable to keep the required linearity. The pressure range of the proposed system is found out to be 5 Psi with the maximum resolution of 1 cm-H2O, which covers the range of all of the known unusual bladder syndromes. The second topic is a self-disable sense technique for content addressable memory (CAM). The differential match-line sense circuit can be self-disabled to choke the charge current fed into the match line right after the comparison result is generated. Besides, the 13-T CAM cell provides the complete write, read, and comparison functions to refresh the data bit and verify its correctness before searching. The average energy consumption of the searching process is 1.872 fJ/bit/search according to thorough simulations.
4

Privacy protected location based services

Bao, Jie, Ku, Wei-Shinn, January 2009 (has links)
Thesis--Auburn University, 2009. / Abstract. Vita. Includes bibliographical references (p. 58-60).
5

Stream specificity and asymmetries in feature binding and content-addressable access in visual encoding and memory

Huynh, D.L., Tripathy, Srimant P., Bedell, H.E., Ogmen, Haluk 09 1900 (has links)
Yes / Human memory is content addressable—i.e., contents of the memory can be accessed using partial information about the bound features of a stored item. In this study, we used a cross-feature cuing technique to examine how the human visual system encodes, binds, and retains information about multiple stimulus features within a set of moving objects. We sought to characterize the roles of three different features (position, color, and direction of motion, the latter two of which are processed preferentially within the ventral and dorsal visual streams, respectively) in the construction and maintenance of object representations. We investigated the extent to which these features are bound together across the following processing stages: during stimulus encoding, sensory (iconic) memory, and visual shortterm memory. Whereas all features examined here can serve as cues for addressing content, their effectiveness shows asymmetries and varies according to cue–report pairings and the stage of information processing and storage. Position-based indexing theories predict that position should be more effective as a cue compared to other features. While we found a privileged role for position as a cue at the stimulus-encoding stage, position was not the privileged cue at the sensory and visual short-term memory stages. Instead, the pattern that emerged from our findings is one that mirrors the parallel processing streams in the visual system. This stream-specific binding and cuing effectiveness manifests itself in all three stages of information processing examined here. Finally, we find that the Leaky Flask model proposed in our previous study is applicable to all three features.
6

A Comprehensive Test and Diagnostic Strategy for TCAMs

Wright, Derek January 2005 (has links)
Content addressable memories (CAMs) are gaining popularity with computer networks. Testing costs of CAMs are extremely high owing to their unique configuration. In this thesis, a fault analysis is carried out on an industrial ternary CAM (TCAM) design, and search path test algorithms are designed. The proposed algorithms are able to test the TCAM array, multiple-match resolver (MMR), and match address encoder (MAE). The tests represent a 6x decrease in test complexity compared to existing algorithms, while dramatically improving fault coverage.
7

A Comprehensive Test and Diagnostic Strategy for TCAMs

Wright, Derek January 2005 (has links)
Content addressable memories (CAMs) are gaining popularity with computer networks. Testing costs of CAMs are extremely high owing to their unique configuration. In this thesis, a fault analysis is carried out on an industrial ternary CAM (TCAM) design, and search path test algorithms are designed. The proposed algorithms are able to test the TCAM array, multiple-match resolver (MMR), and match address encoder (MAE). The tests represent a 6x decrease in test complexity compared to existing algorithms, while dramatically improving fault coverage.
8

An introduction to Digital Addressable Lighting Interface (DALI) systems & study of a DALI day lighting application

Meyer, Lisa January 1900 (has links)
Master of Science / Department of Architectural Engineering and Construction Science / Raphael A. Yunk / The DALI (Digital Addressable Lighting Interface) protocol has set forth the requirements for a digital fluorescent ballast that out performs its predecessors with respect to flexibility and functionality. The advantages of a DALI lighting control system range from advanced dimming capabilities and daylight sensing to saving money in energy and maintenance costs. A DALI lighting control system can also be beneficial to designers when trying to meet the requirements of code or recommended practices. The information in this report will help designers decide when to consider using a DALI lighting control system. This report covers topics such as the advantages of digitally addressable lighting, the equipment required to make a DALI system work, the limitations and drawbacks of DALI, cost information on installing and using a DALI system, and how DALI can help meet code and recommended practices, and concludes with a case study demonstrating how a DALI system has the potential to save money in energy costs.
9

Investigation of light-addressable potentiometric sensors for electrochemical imaging based on different semiconductor substrates

Wu, Fan January 2017 (has links)
Light-addressable potentiometric sensors (LAPS) and scanning photo-induced impedance microscopy (SPIM) have been extensively applied as chemical sensors and biosensors. This thesis focuses on the investigation of LAPS and SPIM for electrochemical imaging based on two different semiconductor substrates, silicon on sapphire (SOS) and indium tin oxide (ITO) coated glass. Firstly, SOS substrates were modified with 1,8-nonadiyne self-assembled organic monolayers (SAMs), which served as the insulator. The resultant alkyne terminals provided a platform for the further functionalization of the sensor substrate with various chemicals and biomolecules by Cu(I)-catalyzed azide alkyne cycloaddition (CuAAC) 'click' reactions. The CuAAC reaction combined with microcontact printing (μCP) was successfully used to create chemical patterns on alkyne-terminated SOS substrates. The patterned monolayers were found to be contaminated with the copper catalyst used in the click reaction as visualized by LAPS and SPIM. Different strategies for avoiding copper contamination were tested. Only cleaning of the silicon surfaces with an ethylenediaminetetraacetic acid tetrasodium salt (EDTA) solution containing trifluoroacetic acid after the 'click' modification proved to be an effective method as confirmed by LAPS and SPIM results, which allowed, for the first time, the impedance of an organic monolayer to be imaged. Furthermore, the 1,8-nonadiyne modified SOS substrate was functionalized and patterned with an RGD containing peptide, which was used to improve the biocompatibility of the substrate and cell adhesion. By seeding cells on the peptide patterned sensor substrate, cell patterning was achieved. Single cell imaging using LAPS and SPIM was attempted on the RGD containing peptide modified SOS substrate Finally, an ITO coated glass substrate was used as a LAPS substrate for the first time. The photocurrent response, the pH response, LAPS and SPIM imaging and its lateral resolution using ITO coated glass without any modification were investigated. Importantly, single cell images were obtained with this ITO-based LAPS system.
10

Low-Power High-Performance Ternary Content Addressable Memory Circuits

Mohan, Nitin January 2006 (has links)
Ternary content addressable memories (TCAMs) are hardware-based parallel lookup tables with bit-level masking capability. They are attractive for applications such as packet forwarding and classification in network routers. Despite the attractive features of TCAMs, high power consumption is one of the most critical challenges faced by TCAM designers. This work proposes circuit techniques for reducing TCAM power consumption. The main contribution of this work is divided in two parts: (i) reduction in match line (ML) sensing energy, and (ii) static-power reduction techniques. The ML sensing energy is reduced by employing (i) positive-feedback ML sense amplifiers (MLSAs), (ii) low-capacitance comparison logic, and (iii) low-power ML-segmentation techniques. The positive-feedback MLSAs include both resistive and active feedback to reduce the ML sensing energy. A body-bias technique can further improve the feedback action at the expense of additional area and ML capacitance. The measurement results of the active-feedback MLSA show 50-56% reduction in ML sensing energy. The measurement results of the proposed low-capacitance comparison logic show 25% and 42% reductions in ML sensing energy and time, respectively, which can further be improved by careful layout. The low-power ML-segmentation techniques include dual ML TCAM and charge-shared ML. Simulation results of the dual ML TCAM that connects two sides of the comparison logic to two ML segments for sequential sensing show 43% power savings for a small (4%) trade-off in the search speed. The charge-shared ML scheme achieves power savings by partial recycling of the charge stored in the first ML segment. Chip measurement results show that the charge-shared ML scheme results in 11% and 9% reductions in ML sensing time and energy, respectively, which can be improved to 19-25% by using a digitally controlled charge sharing time-window and a slightly modified MLSA. The static power reduction is achieved by a dual-VDD technique and low-leakage TCAM cells. The dual-VDD technique trades-off the excess noise margin of MLSA for smaller cell leakage by applying a smaller VDD to TCAM cells and a larger VDD to the peripheral circuits. The low-leakage TCAM cells trade off the speed of READ and WRITE operations for smaller cell area and leakage. Finally, design and testing of a complete TCAM chip are presented, and compared with other published designs.

Page generated in 0.1758 seconds