scholarly journals The Matrix KV Storage System Based on NVM Devices

Micromachines ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 346 ◽  
Author(s):  
Tao Cai ◽  
Fuli Chen ◽  
Qingjian He ◽  
Dejiao Niu ◽  
Jie Wang
Keyword(s):  
Complex I ◽  
Nonvolatile Memory ◽  
Storage System ◽  
Storage Device ◽  
Limited Capacity ◽  
Embedded Processor ◽  
Computing Power ◽  
Management Efficiency ◽  
Collaboration Management ◽  
The Matrix

The storage device based on Nonvolatile Memory (NVM devices) has high read/write speed and embedded processor. It is a useful way to improve the efficiency of Key-Value (KV) application. However it still has some limitations such as limited capacity, poorer computing power compared with CPU, and complex I/O system software. Thus it is not an effective way to construct KV storage system with NVM devices directly. We analyze the characteristics of NVM devices and demands of KV application to design the matrix KV storage system based on NVM Devices. The group collaboration management based on Bloomfilter, intragroup optimization based on competition, embedded KV management based on B+-tree, and the new interface of KV storage system are presented. Then, the embedded processor in the NVM device and CPU can be comprehensively utilized to construct a matrix KV pair management system. It can improve the storage and management efficiency of massive KV pairs, and it can also support the efficient execution of KV applications. A prototype is implemented named MKVS (the matrix KV storage system based on NVM devices) to test with YCSB (Yahoo! Cloud System Benchmark) and to compare with the current in-memory KV store. The results show that MKVS can improve the throughput by 5.98 times, and reduce the 99.7% read latency and 77.2% write latency.

Design of Online Pipeline Ultrasonic Data Acquisition and Storage System Based on PCI Bus

2014 ◽  
Vol 651-653 ◽  
pp. 2296-2300
Author(s):  
Jing Huang ◽  
She Yu Zhou ◽  
Bing Lei Guan
Keyword(s):  
Data Acquisition ◽  
Ultrasonic Testing ◽  
High Speed ◽  
Storage System ◽  
Ultrasonic Signal ◽  
Pci Bus ◽  
Online Data ◽  
Embedded Processor ◽  
Design Scheme ◽  
And Storage

Based on the theory of ultrasonic testing, an online data-acquisition and storage system is designed. The design scheme of hardware and software of the system is introduced in this paper, in which the embedded processor DSP and FPGA is used as its control core and the interface of PCI bus and DSP is designed. Thus a high speed and large-capacity ultrasonic signal can be processed, furthermore the pipelines defects can be analyze and evaluate.

Wind-Solar-Hydrogen Hybrid Energy Control Strategy Considering Delayed Power of Hydrogen Production

2021 ◽  
Vol 69 (2) ◽  
pp. 5-12
Author(s):  
Zheng Li ◽  
Yan Qin ◽  
Xin Cao ◽  
Shaodong Hou ◽  
Hexu Sun
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Reactive Power ◽  
Storage System ◽  
Energy Storage System ◽  
Storage Device ◽  
Solar Hydrogen ◽  
Dc Voltage ◽  
Hybrid Energy ◽  
Load Demand

In order to meet the load demand of power system, BP based on genetic algorithm is applied to the typical daily load forecasting in summer. The demand change of summer load is analysed. Simulation results show the accuracy of the algorithm. In terms of power supply, the reserves of fossil energy are drying up. According to the prediction of authoritative organizations, the world's coal can be mined for 216 years. As a renewable energy, wind power has no carbon emissions compared with traditional fossil energy. At present, it is generally believed that wind energy and solar energy are green power in the full sense, and they are inexhaustible clean power. The model of wind power solar hydrogen hybrid energy system is established. The control strategy of battery power compensation for delayed power of hydrogen production is adopted, and different operation modes are divided. The simulation results show that the system considering the control strategy can well meet the load demand. Battery energy storage system is difficult to respond to short-term peak power fluctuations. Super capacitor is used to suppress it. This paper studies the battery supercapacitor complementary energy storage system and its control strategy. When the line impedance of each generation unit in power grid is not equal, its output reactive power will be affected by the line impedance and distributed unevenly. A droop coefficient selection method of reactive power sharing is proposed. Energy storage device is needed to balance power and maintain DC voltage stability in the DC side of microgrid. Therefore, a new droop control strategy is proposed. By detecting the DC voltage, dynamically translating the droop characteristic curve, adjusting the output power, maintaining the DC voltage in a reasonable range, reducing the capacity of the DC side energy storage device. Photovoltaic grid connected inverter chooses the new droop control strategy.

scholarly journals Case study of stationary energy storage device in a 3 kV DC traction system

2018 ◽  
Vol 180 ◽  
pp. 02005 ◽  
Author(s):  
Włodzimierz Jefimowski ◽  
Anatolii Nikitenko
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Utilization ◽  
Storage Device ◽  
Location Selection ◽  
Train Operation ◽  
Traction Substations ◽  
Traction System ◽  
Regenerative Energy

The paper presents the results of economic study of energy storage system (ESS) implemented in 3 kV DC power supply system. Two conceptions of ESS have been investigated: ESS with supercapacitor (SC) and hybrid ESS (HESS) with SC and LFP battery. The investigated locations of energy storage systems are considered among existing traction substations in two railway lines with different density of train operation. The considered aims of energy storage system implementation are decreasing of energy consumption by maximum regenerative energy utilization and reduction of peak 15- min power demand of traction substation. The paper presents a method of regenerative power estimation depending on the location of the considered ESS implementation point. Also the method of optimal location selection of ESS in terms of minimization of Simple Payback Time (SPBT) of investment is presented. Besides the influence of initial cost value as well as energy price on the SPBT value are investigated. The results are compared between two railway lines with different number of trains operating.

External alternative NADH:ubiquinone oxidoreductase redirected to the internal face of the mitochondrial inner membrane rescues complex I deficiency in Yarrowia lipolytica

2001 ◽  
Vol 114 (21) ◽  
pp. 3915-3921 ◽  
Author(s):  
Stefan J. Kerscher ◽  
Andrea Eschemann ◽  
Pamela M. Okun ◽  
Ulrich Brandt
Keyword(s):  
Yarrowia Lipolytica ◽  
Complex I ◽  
Functional Expression ◽  
Proton Pumping ◽  
Nadh:Ubiquinone Oxidoreductase ◽  
Inner Membrane ◽  
Mitochondrial Inner Membrane ◽  
The Matrix ◽  
Cytosolic Side ◽  
Respiratory Membrane

Alternative NADH:ubiquinone oxidoreductases are single subunit enzymes capable of transferring electrons from NADH to ubiquinone without contributing to the proton gradient across the respiratory membrane. The obligately aerobic yeast Yarrowia lipolytica has only one such enzyme, encoded by the NDH2 gene and located on the external face of the mitochondrial inner membrane. In sharp contrast to ndh2 deletions, deficiencies in nuclear genes for central subunits of proton pumping NADH:ubiquinone oxidoreductases (complex I) are lethal. We have redirected NDH2 to the internal face of the mitochondrial inner membrane by N-terminally attaching the mitochondrial targeting sequence of NUAM, the largest subunit of complex I. Lethality of complex I mutations was rescued by the internal, but not the external version of alternative NADH:ubiquinone oxidoreductase. Internal NDH2 also permitted growth in the presence of complex I inhibitors such as 2-decyl-4-quinazolinyl amine (DQA). Functional expression of NDH2 on both sides of the mitochondrial inner membrane indicates that alternative NADH:ubiquinone oxidoreductase requires no additional components for catalytic activity. Our findings also demonstrate that shuttle mechanisms for the transfer of redox equivalents from the matrix to the cytosolic side of the mitochondrial inner membrane are insufficient in Y. lipolytica.

Generation of Fuzzy Rules and Learning Algorithms for Servo Control in Holographic Data Storage System

2013 ◽  
Author(s):  
Jang Hyun Kim ◽  
Wooyoung Jeong ◽  
Hyunseok Yang
Keyword(s):  
Data Storage ◽  
Storage System ◽  
Optical Memory ◽  
Information Storage ◽  
Servo Control ◽  
Fuzzy Rules ◽  
Storage Device ◽  
Holographic Data Storage ◽  
Data Storage System ◽  
System 1

Today many media of information storage device are formed as disks. Hence, next generation removable data storage media are shaped as disk types too. The holographic data storage system also uses a disk type photopolymer media. And then, holographic data storage system is most advanced optical memory system. Tracking servo and tilt servo control are very important research in holographic data storage system. In this paper, we propose intelligent servo control by fuzzy rules in holographic data storage system. Hence, we have found pattern of tilt servo control in holographic data storage system through fuzzy system. Fuzzy rules were generated by Genetic algorithm for controlling tilt servo. Therefore, we control tilt servo using fuzzy rules in holographic data storage system. Consequently, practical pattern of tilt servo control was found by intelligence algorithm in holographic data storage system.[1]

The Role of Agarose Mechanical Response on the Matrix Synthesis of Nucleus Pulposus Cells: A Pilot Study

2009 ◽  
Author(s):  
Arzu Tasci ◽  
Ladina Ettinger ◽  
Stephen Ferguson ◽  
Philippe Büchler
Keyword(s):  
Cyclic Loading ◽  
Mechanical Response ◽  
Low Back ◽  
Limited Capacity ◽  
Nucleus Pulposus Cells ◽  
Matrix Synthesis ◽  
Biosynthetic Activity ◽  
The Matrix ◽  
Ivd Degeneration

Low back pain is the most common spinal disorder and its main cause is intervertebral disc (IVD) degeneration. IVD has a major role of withstanding loads generated in the spine during daily activities. However, it has a limited capacity for self-repair. Since it has an avascular structure, the pathways it uses for regeneration is quite complex and not yet well understood. The mechanical stimulation studies on the cell seeded constructs revealed that cells regulate their biosynthetic activity with cyclic loading [1,2]. The mechanical properties of the scaffold might play an important role in the transmission of mechanical signals to the embedded cells. The objective of this study is to investigate the effect of agarose concentration on the amount of extracellular matrix synthesis in IVD cell seeded constructs under static culture and cyclic loading conditions.

Recurring Themes and Images in a Series of Consecutive Rem Dreams

1988 ◽  
Vol 67 (3) ◽  
pp. 767-777E
Author(s):  
Ron Roberts
Keyword(s):  
Mathematical Model ◽  
Storage System ◽  
Consecutive Series ◽  
Limited Capacity ◽  
Nonrandom Pattern

A consecutive series of REM dreams were collected from one subject over a period of four nights and examined for recurring themes and images. Analysis suggested a nonrandom pattern of dreaming consistent with the proposition that the themes and images are held as elements in a limited capacity storage system from which they can be recycled. One such system can be described by means of a simple testable mathematical model. Some of the implications of this are discussed.

scholarly journals Low abundance of the matrix arm of complex I of mice liver mitochondria predicts longevity

2012 ◽  
Vol 1817 ◽  
pp. S59
Author(s):  
Satomi Miwa ◽  
Howsun Jow ◽  
Achim Treumann ◽  
Thomas von Zglinicki
Keyword(s):  
Complex I ◽  
Liver Mitochondria ◽  
The Matrix ◽  
Mice Liver

scholarly journals Optimal Design of FPGA Switch Matrix with Ion Mobility Based Nonvolatile ReRAM

2015 ◽  
Vol 2015 ◽  
pp. 1-6
Author(s):  
Peng Hai-yun ◽  
Zhou Wen-gang
Keyword(s):  
Ion Mobility ◽  
Nonvolatile Memory ◽  
Low Cost ◽  
Random Access ◽  
Memory Device ◽  
Resistive Random Access Memory ◽  
Mobility Model ◽  
Storage Device ◽  
New Device ◽  
Switching Matrix

There are high demands for research of new device with greater accessing speed and stability to replace the current SRAM storage cell. The resistive random access memory (ReRAM) is a metal oxide which is based on nonvolatile memory device possessing the characteristics of high read/write speed, high storage density, low power, low cost, very small cell, being nonvolatile, and unlimited writing endurance. The device has extreme short erasing time and the stored charge cannot be destroyed after power-off. Therefore, the ReRAM device is a significant storage device for many applications in the next generation. In this paper, we first explored the mechanism of the ReRAM device based on ion mobility model and then applied this device to optimize the design of FPGA switching matrix. The results show that it is beneficial to enhance the FPGA performance to replace traditional SRAM cells with ReRAM cells for the switching matrix.

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