期刊：
Carpathian Journal of Food Science and Technology,2015年7(3):61-67 ISSN：2066-6845
通讯作者：
Long, Zhuan(longzdei@163.com)
作者机构：
[Long, Zhuan] Sports Art Department Hunan University of Chinese Medicine, Changsha, Hunan, 410208, China;[Luo, Min] Sports Department Hunan Vocational College of Commerce, Changsha, Hunan, 410205, China
通讯机构：
[Long, Z.] S;Sports Art Department Hunan University of Chinese Medicine, Changsha, Hunan, China
关键词：
Energy gel;Energy supply ability;Sports food;Starch
摘要：
As the living level constantly improves, people require higher on health and then a sport storm rises. Under such a background pattern, sports food comes into sight. Sugar, fat and protein are the main energy source in sports food, which provide people nutrition needed during sports. Energy gel refers to the carbohydrates colloid made by choosing the Carbohydrates (sugar) as the main source of energy, at the same time adding all kinds of electrolytes and functional material. Using starch as the raw materials and all kinds of productions of amylase as the main source of energy, starch energy gel is a new sports nutritious food. At the same time, starch energy gel enjoys a large market and has a great development space due to the increasing demand of sport nutritious food. Based on the understanding of starch energy gel, this study explored the development and performance of starch energy gel and analyzed its rapid energy supply ability during sports. The quality of starch energy gel was improved by adding a little sodium citrate and electrolyte, on the premise of not affecting energy supply speed.
作者：
An Optimal Reduce Placement Algorithm for Data Skew Based on Sampling
作者机构：
湖南大学
会议名称：
Big Data Benchmarks, Performance Optimization and Emerging Hardware. 6th Workshop, BPOE 2015
会议时间：
2015-08-31到2015-09-04
会议地点：
Kohala, HI, USA
关键词：
Data sampling;Data skew;Inner communication;MapReduce;Reduce placement
摘要：
For frequent disk I/O and big data transmissions among different racks and physical nodes, the intermediate data communication has become the biggest performance bottle-neck in most running Hadoop systems. This paper proposes a reduce placement algorithm called CORP to schedule related map and reduce tasks on the near nodes or clusters or racks for the data locality. Since the number of keys cannot be counted until the input data are processed by map tasks, this paper firstly provides a sampling algorithm based on reservoir sampling to achieve the distribution of the keys in intermediate data. Through calculating the distance and cost matrices among the cross node communication, the related map and reduce tasks can be scheduled to relatively near physical nodes for data locality. Experimental results show that CORP can not only improve the balance of reduce tasks effectively, but also decrease the job execution time for the lower inner data communication.
期刊：
Journal of Loss Prevention in the Process Industries,2015年33:289-304 ISSN：0950-4230
通讯作者：
Zhu,Yi
作者机构：
Explosion and Science State Key Laboratory, Beijing Institute of Technology, Beijing 100081, China 。 Fire Protection Engineering Department of Chinese People's Armed Police Force Academy, Langfang, Hebei 065000, China
Explosion and Science State Key Laboratory, Beijing Institute of Technology, Beijing 100081, China 。
Explosion and Science State Key Laboratory, Beijing Institute of Technology, Beijing 100081, China
摘要：
•Some special features of the Qingdao crude oil vapor explosion accident are identified.•Various causes which lead the explosion, high casualties and severe damages are analyzed.•Three contentious issues in the official investigation report are tested and investigated.•Lessons learnt and preventive measures suggested for Qingdao-like accidents are discussed.•Some critical and interesting issues need to be further studied about Qingdao accident are put forward.
摘要：
The classical traditional Chinese formulation Liuwei Dihuang, shown to have clinical efficacy for "nourishing kidney-yin" in traditional Chinese medicine, has been used for thousands of years in China. Little attention, however, has been paid to quality control methods for this formulation. Hence, a rapid and sensitive analytical technique is urgently needed for the evaluation Liuwei Dihuang preparations to assess its quality and pharmacological functionality. In this study, an ultra high performance liquid chromatography dual-wavelength method was developed to simultaneously determine eleven constituents in Liuwei Dihuang preparations. This robust approach provided a fast and comprehensive quantitative determination of the major bioactive markers within Liuwei Dihuang preparations. To distinguish four dosage forms of Liuwei Dihuang preparations, a random forest technique was applied on the spectrometric fingerprint data obtained. This combination approach of chromatographic techniques and data analyses might serve as a rapid and efficient tool to ensure the quality of Liuwei Dihuang preparations and other Chinese medicinal formulations and can support quality control and scientific research into the pharmacological potential for these formulations. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.
摘要：
Communications via instant message tools have become increasingly popular in people's daily lives. However, one of the main issues in communication is the transmission of secret information. There are many methods for covert communications. In this paper, a novel text steganography method in chat is proposed which utilizes emoticons and interjections. Due to the tremendous numbers of emoticons and interjections used in many chat tools, the pre-shared sets of emoticons and interjections can be enlarged as required. Then, through selecting the emoticons and interjections of corresponding encoding in different locations, secret information can be embedded into the chat text. Experiment results demonstrate that the capacity and embedding efficiency have better performance than other text steganography methods in chat.
作者：
CSRA: An Efficient Resource Allocation Algorithm in MapReduce Considering Data Skewness
作者机构：
湖南大学
会议名称：
8th International Conference on Knowledge Science, Engineering and Management (KSEM)
会议时间：
2015-12-28到2015-12-30
会议地点：
重庆
关键词：
MapReduce;Data skew;Splitting
摘要：
MapReduce offers a promising programming model for big data processing. One significant issue in practical applications is data skew, its an important reason for the emergence of stragglers which makes the data assigned to each reducer imbalance. This paper presents CSRA, an efficient resource allocation algorithm in MapReduce considering data skew. CSRA aims at reducing the running time and coefficient of variation by reordering the task list and splitting the big clusters. Through thinking over the actual status of tasks, this method largely squares up the resource utilization. After we implement CSRA in Hadoop, the experiments show that CSRA has negligible overhead and can speed up the execution time of some popular applications obviously.
作者机构：
[Lu, Hongmei; Fan, Wei; Wang, Xi] Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Huang, Jianhua] Hunan Univ Chinese Med, Dept Pharmaceut, Changsha 410208, Hunan, Peoples R China.
通讯机构：
[Lu, Hongmei] C;Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
摘要：
In this study, an approach based on near-infrared spectroscopy (NIRS), ultraviolet-visible spectroscopy (UV-Vis) and chemometric algorithms was developed for discrimination among five varieties of green tea, and further estimation of the total polyphenol content (TPC) in these tea varieties. Principal component analysis (PCA) and the random forest (RF) pattern recognition technique were used to classify these samples. Based on the joint information from the NIR and UV-Vis spectra, a successful classification model was established with RF. The classification accuracy was 96%. Furthermore, a partial least-squares regression (PLSR) model based on the NIR spectra and TPC values measured by the UV-Vis reference method was constructed for rapid analysis of the TPC in these tea samples. The values of RMSECV, RMSEC, and RMSEP were 0.3578, 0.1775 and 0.2693, respectively. The correction coefficients for the calibration and prediction set were 0.9966 and 0.9864, respectively. These results demonstrated that the proposed method can be efficiently utilized for fast, accurate, economic analysis of green tea.
作者机构：
[刘宏伟; 李坦平] Department of Material and Chemical Engineering, Hunan Institute of Technology, Hengyang, China;[黄建华] School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China;[谢华林] College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, China
作者：
A low redundancy and high coverage node scheduling algorithm for wireless sensor networks
作者机构：
湖南大学
会议名称：
8th China Wireless Sensor Network Conference, CWSN 2014
会议时间：
2014-10-31到2014-11-02
会议地点：
Xi’an, China
会议主办单位：
China; China Computer Federation; Computer Federation Technical Committee on Sensor Network; Springer
关键词：
WSN · Node scheduling · The coverage hole
摘要：
In order to efficiently use node’s energy and prolong node’s life time in wireless sensor networks (WSN), this paper presents a low redundancy and high coverage (LRHC) node scheduling algorithm. In LRHC, based on the characteristics of the cellular, the WSN network is divided into a number of cellular to help the selection of active nodes. A new triangle cover method has been theoretically analyzed and proposed to solve the coverage holes problem for the first time. In addition, during the scheduling, a new active node will be the substitute for the active node near to death, which guarantees the stability of network coverage quality. The experimental results demonstrate that the proposed LRHC algorithm reduces the required nodes to satisfy a certain coverage quality, and improves the life time and ensures the high coverage quality of the network compared with some existing algorithms.
摘要：
A challenge in coupling high-speed counter-current chromatography (HSCCC) online with high performance liquid chromatography (HPLC) for purity analysis was their time incompatibility. Consequently, HSCCC-HPLC was conducted by either controlling HPLC analysis time and HSCCC flow rate or using stop-and-go scheme. For natural products containing compounds with a wide range of polarities, the former would optimize experimental conditions, while the latter required more time. Here, a novel HSCCC-HPLC-diode array detector-mass spectrometry (HSCCC-HPLC-DAD-MS) was developed for undisrupted purification, analysis and identification of multi-compounds from natural products. Two six-port injection valves and a six-port switching valve were used as interface for collecting key HSCCC effluents alternatively for HPLC-DAD-MS analysis and identification. The ethyl acetate extract of Malus doumeri was performed on the hyphenated system to verify its efficacy. Five main flavonoids, 3-hydroxyphloridzin (1), phloridzin (2), 4',6'-dihydroxyhydrochalcone-2'-O-beta-D-glucopyranoside (3, first found in M. doumeri), phloretin (4), and chrysin (5), were purified with purities over 99% by extrusion elution and/or stepwise elution mode in two-step HSCCC, and 25 mM ammonium acetate solution was selected instead of water to depress emulsification in the first HSCCC. The online system shortened manipulation time largely compared with off-line analysis procedure and stop-and-go scheme. The results indicated that the present method could serve as a simple, rapid and effective way to achieve target compounds with high purity from natural products. (C) 2015 Elsevier B.V. All rights reserved.
摘要：
A quantitative analysis of multiple components with a single-marker method was established for the simultaneous determination of five sesqutiterpenoids in Xingnaojing injection. This method was established with Xingnaojing injection determined by high-performance liquid chromatography coupled with diode array detection. The durability and system suitability of the established method were evaluated, and the reliable relative correction factors were obtained with curdione selected as an internal reference. The contents of the five components in all Xingnaojing injections were determined by external standard method and the contents of curcumenone, curcumenol, curzerenone, and germacrone were also calculated with the obtained relative correction factors. Then, relative error was investigated to estimate the difference of the two methods. As a result, the established new method possesses good adaptability, and there is no significant difference between the two methods, except for the content of curzerenone in eight samples. To put the established method into practice, the limits of quantitation of the established method of the five components were proposed and defined. Thus, the developed methodology can also be utilized to the quality evaluation of Xingnaojing injection, in spite of the difference found in the content of curzerenone between the external standard method and the newly established method. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.
关键词：
reversible data hiding;medical images;ROI-based;prediction error expansion;sorting
摘要：
A novel ROI-based reversible data hiding scheme is proposed for medical images, which is able to hide electronic patient record (EPR) and protect the region of interest (ROI) with tamper localization and recovery. The proposed scheme combines prediction error expansion with the sorting technique for embedding EPR into ROI, and the recovery information is embedded into the region of non-interest (RONI) using histogram shifting (HS) method which hardly leads to the overflow and underflow problems. The experimental results show that the proposed scheme not only can embed a large amount of information with low distortion, but also can localize and recover the tampered area inside ROI.
期刊：
Journal of Physical Chemistry A,2015年119(29):8216-8224 ISSN：1089-5639
通讯作者：
Rong, Chunying
作者机构：
[Wu, Wenjie; Huang, Ying] Hunan Univ Chinese Med, Sch Pharm, Changsha 410208, Hunan, Peoples R China.;[Rong, Chunying; Wu, Zemin; Liu, Shubin] Hunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Minist Educ China, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.;[Rong, Chunying] McMaster Univ, Dept Chem, Hamilton, ON L8S 4M1, Canada.;[Lu, Tian] Beijing Kein Res Ctr Nat Sci, Beijing 100022, Peoples R China.;[Liu, Shubin] Univ N Carolina, Ctr Res Comp, Chapel Hill, NC 27599 USA.
通讯机构：
[Rong, Chunying] H;Hunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Minist Educ China, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.
摘要：
The electrophilic aromatic substitution for nitration, halogenation, sulfonation, and acylation is a vastly important category of chemical transformation. Its reactivity and regioselectivity is predominantly determined by nucleophilicity of carbon atoms on the aromatic ring, which in return is immensely influenced by the group that is attached to the aromatic ring a priori. In this work, taking advantage of recent developments in quantifying nucleophilicity (electrophilicity) with descriptors from the information-theoretic approach in density functional reactivity theory, we examine the reactivity properties of this reaction system from three perspectives. These include scaling patterns of information-theoretic quantities such as Shannon entropy, Fisher information, Ghosh-Berkowitz-Parr entropy and information gain at both molecular and atomic levels, quantitative predictions of the barrier height with both Hirshfeld charge and information gain, and energetic decomposition analyses of the barrier height for the reactions. To that end, we focused in this work on the identity reaction of the monosubstituted-benzene molecule reacting with hydrogen fluoride using boron trifluoride as the catalyst in the gas phase. We also considered 19 substituting groups, 9 of which are ortho/para directing and the other 9 meta directing, besides the case of R = -H. Similar scaling patterns for these information-theoretic quantities found for stable species elsewhere were disclosed for these reactions systems. We also unveiled novel scaling patterns for information gain at the atomic level. The barrier height of the reactions can reliably be predicted by using both the Hirshfeld charge and information gain at the regioselective carbon atom. The energy decomposition analysis ensued yields an unambiguous picture about the origin of the barrier height, where we showed that it is the electrostatic interaction that plays the dominant role, while the roles played by exchange-correlation and steric effects are minor but indispensable. Results obtained in this work should shed new light for better understanding of the factors governing the reactivity for this class of reactions and assisting ongoing efforts for the design of new and more efficient catalysts for such kind of transformations.
作者机构：
[彭东明; 刘艳飞; 王晓红; 张姗姗; 张航] School of Chemistry and Chemical Engineering, Central South University, Changsha, China;[刘珍宝] School of Pharmacy, Central South University, Changsha, China;[尹伟成; 彭东明] School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
通讯机构：
School of Chemistry and Chemical Engineering, Central South University, Changsha, China
作者机构：
[王群; 杨媛; 曹庸; 陈雪香; 李俊] College of Food Science, South China Agriculture University, Guangzhou, China;[欧阳文] School of Pharmacy, Hunan University of Traditional Chinese Medicine, Changsha, China
通讯机构：
College of Food Science, South China Agriculture University, Guangzhou, China
