Resource Type

Journal Article 5

Year

2023 1

2021 1

2020 1

2013 1

2011 1

Keywords

Key-value (KV) store 1

Log-structured merge (LSM) tree 1

Non-volatile memory (NVM) 1

Non-volatile memory express soild-state drive (NVMe SSD) 1

Organic compounds 1

QSPR 1

Quantum chemical descriptors 1

Storage lipid/water distribution coefficient 1

Write-ahead log (WAL) 1

christa philtri geometrically justified 1

cleft lip and palate 1

formula of water temperature released 1

hydropower station intake 1

log Klip/w 1

model experiment 1

rotation advancement 1

stop-log gate 1

sufficient rotation 1

thermally stratified reservoir 1

open ︾

Search scope:

排序： Display mode:

Developing the QSPR model for predicting the storage lipid/water distribution coefficient of organic compounds

Miao Li, Jian Li, Yuchen Lu, Cenyang Han, Xiaoxuan Wei, Guangcai Ma, Haiying Yu

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1316-z

Abstract: . • Hydrophobic and electrostatic interactions and molecular size dominate log Klip/w. • The model canbe used in a wide application domain to predict log Klip/w values.The storage lipid/water distribution coefficient (log Klip/w) of organic chemicals, which quantitativelyof small organic compounds was constructed based on 305 experimental log Klip/w values.partitioning coefficient were employed to characterize the intermolecular interactions that dominate log

Keywords： Storage lipid/water distribution coefficient     log Klip/w     Organic compounds     QSPR     Quantum    

HTML PDF Collect

A prediction formula of water temperature released from the multi-level stop-log gate intake of hydropower

Gao Xueping,Chen Hong,Song Huifang

Strategic Study of CAE 2011, Volume 13, Issue 12,   Pages 63-67

Abstract:

In thermally stratified reservoir, a multi-level intake structure is usually adopted in hydropower station to reduce the negative effect of releasing lower-temperature water to the environment in downstream reach. And a simple and practical formula of water temperature released is need. In this paper, based on Nuozhadu Hydropower Station, a model test is conducted to model the thermal stratification of this reservoir, and measure the temperature of water released from the intake structure. A prediction formula of water temperature released is put forward based on the experimental data. The formula is validated by the experimental results of water temperature released from the intakes of Jinping No.1 Hydropower Station.

Keywords： thermally stratified reservoir     hydropower station intake     stop-log gate     formula of water temperature    

HTML PDF Collect

Sufficient downward rotation of the christa philtri on the cleft side: a modified technique

Yi Xu, Jingtao Li, Bing Shi

Frontiers of Medicine 2013, Volume 7, Issue 4,   Pages 510-516 doi: 10.1007/s11684-013-0299-6

Abstract:

Cleft lip and palate (CLP) is the most common craniofacial congenital deformity.Sixty patients with unilateral complete cleft lip and palate were operated with this technique.The lip height, lip length, and relative height of the christa philtri were measured for symmetry evaluationThe difference observed in the lip height and lip length immediately after surgery became statisticallyinsignificant after 10 months (P = 0.104 for lip height and 0.121 for lip length).

Keywords： cleft lip and palate     rotation advancement     sufficient rotation     christa philtri geometrically justified    

HTML PDF Collect

MyWAL: performance optimization by removing redundant input/output stack in key-value store Research Article

Xiao ZHANG, Mengyu LI, Michael NGULUBE, Yonghao CHEN, Yiping ZHAO,zhangxiao@nwpu.edu.cn,limy@mail.nwpu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 7,   Pages 980-993 doi: 10.1631/FITEE.2200496

Abstract: Based on a , the key-value (KV) storage system can provide high reading performance and optimize random writing performance. It is widely used in modern data storage systems like e-commerce, online analytics, and real-time communication. An LSM tree stores new KV data in the memory and flushes to disk in batches. To prevent data loss in memory if there is an unexpected crash, RocksDB appends updating data in the before updating the memory. However, synchronous WAL significantly reduces writing performance. In this paper, we present a new WAL mechanism named MyWAL. It directly manages raw devices (or partitions) instead of saving data on a traditional file system. These can avoid useless metadata updating and write data sequentially on disks. Experimental results show that MyWAL can significantly improve the data writing performance of RocksDB compared to the traditional WAL for small KV data on solid-state disks (SSDs), as much as five to eight times faster. On non-volatile memory express soild-state drives (NVMe SSDs) and , MyWAL can improve data writing performance by 10%‍–‍30%. Furthermore, the results of YCSB (Yahoo! Cloud Serving Benchmark) show that the latency decreased by 50% compared with SpanDB.

Keywords： Key-value (KV) store     Log-structured merge (LSM) tree     Non-volatile memory (NVM)     Non-volatile memoryexpress soild-state drive (NVMe SSD)     Write-ahead log (WAL)    

HTML PDF Collect

A novel color image encryption algorithm based on a fractional-order discrete chaotic neural network and DNA sequence operations Research Articles

Tenreiro Machado, Ran-chao Wu,lip_chenhut@126.com

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 6,   Pages 809-962 doi: 10.1631/FITEE.1900709

Abstract: A novel algorithm based on dynamic deoxyribonucleic acid (DNA) encoding and chaos is presented. A three-neuron fractional-order discrete Hopfield neural network (FODHNN) is employed as a pseudo-random chaotic sequence generator. Its initial value is obtained with the secret key generated by a five-parameter external key and a hash code of the plain image. The external key includes both the FODHNN discrete step size and order. The hash is computed with the SHA-2 function. This ensures a large secret key space and improves the algorithm sensitivity to the plain image. Furthermore, a new three-dimensional projection confusion method is proposed to scramble the pixels among red, green, and blue color components. DNA encoding and diffusion are used to diffuse the image information. Pseudo-random sequences generated by FODHNN are employed to determine the encoding rules for each pixel and to ensure the diversity of the encoding methods. Finally, confusion II and XOR are used to ensure the security of the encryption. Experimental results and the security analysis show that the proposed algorithm has better performance than those reported in the literature and can resist typical attacks.

Keywords： 分数阶离散系统；神经网络；DNA加密；彩色图像加密    

HTML PDF Collect

Title Author Date Type Operation

Developing the QSPR model for predicting the storage lipid/water distribution coefficient of organic compounds

Miao Li, Jian Li, Yuchen Lu, Cenyang Han, Xiaoxuan Wei, Guangcai Ma, Haiying Yu

Journal Article

A prediction formula of water temperature released from the multi-level stop-log gate intake of hydropower

Gao Xueping,Chen Hong,Song Huifang

Journal Article

Sufficient downward rotation of the christa philtri on the cleft side: a modified technique

Yi Xu, Jingtao Li, Bing Shi

Journal Article

MyWAL: performance optimization by removing redundant input/output stack in key-value store

Xiao ZHANG, Mengyu LI, Michael NGULUBE, Yonghao CHEN, Yiping ZHAO,zhangxiao@nwpu.edu.cn,limy@mail.nwpu.edu.cn

Journal Article

A novel color image encryption algorithm based on a fractional-order discrete chaotic neural network and DNA sequence operations

Tenreiro Machado, Ran-chao Wu,lip_chenhut@126.com

Journal Article