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The sediment microbial fuel cell (SMFC) sensors using cathode as sensing element exhibited attractive prospects for online and in‐situ monitoring. However, the sensing performance of SMFC sensors to different types of contaminants was seldom reported. In this study, SMFCs were constructed in stimulated wetland to sense five types of contaminants, including oxidative heavy metals (Cu2+ and Cr6+), non‐oxidative...
The pollution of oil spill troubles people's health unquestionable seriously and restricts the development of coastal economy, severe oil spill will manipulate the ecological environment for quite a long period, and lead to some marine organism extinctions. Introduced an oil spills real-time monitoring system based on ultraviolet fluorescence, which can achieve the function in all weather, real-time...
Detecting runtime anomalies is very important to monitoring and maintenance of distributed services. People often use execution logs for troubleshooting and problem diagnosis manually, which is time consuming and error-prone. In this paper, we propose an approach for automatic anomaly detection based on logs. We first mine a hybrid graph model that captures normal execution flows inter and intra services,...
Detecting execution anomalies is very important to monitoring and maintenance of cloud systems. People often use execution logs for troubleshooting and problem diagnosis, which is time consuming and error-prone. There is great demand for automatic anomaly detection based on logs. In this paper, we mine a time-weighted control flow graph (TCFG) that captures healthy execution flows of each component...
Specific requirements and characteristics of primary storage make designing desirable deduplication schemes a sophisticated task. In this paper, we propose DIODE, a Dynamic Inline-Offline DEduplication scheme that provides salient read/write performance and space-saving simultaneously for primary storage systems. DIODE orchestrates inline and offline processes in a dynamic manner. We propose two innovative...
This study examines the effect of institutional ownership on dividend payouts through the lens of agency theory. We hypothesize that only institutions with certain traits are likely to monitor. Monitoring institutions will use dividend payouts as a tool to mitigate firms' agency problems, conditional on those firms' financial performance. We find that (1) there is a positive relation between lagged...
Motivated by frequent failures in cloud computing systems, we analyze failure frequency and continuity of tasks from the Google cloud cluster, and find what we call killer tasks that suffer from frequent failures and repeated rescheduling. Killer task can be a big concern in cloud systems as it causes unnecessary resource wasting and significant increase of scheduling workloads. In this paper, we...
Measurement samples are often taken in various monitoring applications. To reduce the sensing cost, it is desirable to achieve better sensing quality while using fewer samples. Compressive Sensing (CS) technique finds its role when the signal to be sampled meets certain sparsity requirements. In this paper we investigate the possibility and basic techniques that could further reduce the number of...
Numerous enterprises are migrating their applications onto cloud platforms to gain benefit from cloud computing technology. These applications are composed of several service components with complicated dependency structures, especially for network applications which commonly take serial collaboration of service components. We call a group of VMs belonging to the same application a VM family. Finding...
Under harsh environment with high voltage and intensive electromagnet field, a specific design of a wireless temperature monitoring system is presented in the paper. In High-Voltage Switchgears application, a temperature interrogation device is placed in the high voltage end, and a monitoring instrument is applied in low voltage end. The voltage isolation issue is solved by RF transmission strategy...
Non-intrusive load monitoring (NILM) is an important topic in smart-grid and smart-home. Many energy disaggregation algorithms have been proposed to detect various individual appliances from one aggregated signal observation. However, few works studied the energy disaggregation of plug-in electric vehicle (EV) charging in the residential environment since EVs charging at home has emerged only recently...
Firms with good corporate governance and enterprise have robust systems in order to enhance business performance. Government formulates laws for the purpose of preventing malpractice arising from lack of good corporate governance. This paper intends to examine how the ratio and part-time situation of independent directors affect firm performance. Empirical results show that ratio of independent directors...
With the cost of modern weapons, equipment procurement use and security (OSS) increasing, economic affordability becomes an unavoidable problem. Aerospace, defense departments, the services and other industries increasingly unable to afford such a huge financial even material resources and manpower cost. Based on the equipment maintenance cost estimation on the study, this paper focuses on the costs...
The weathering crust Elution-deposited Rare Earth is the peculiar and valuable source in China. The greatly mining activities in the south of GanZhou(Gannan) were occurred disorderly and illegally using the traditional extraction way, which brought out the dreadful environmental influence. In this study, the SPOT5 multispectral data was used to recognize and classify the destroyed land from mining...
Job Management is the important step that the teacher instructs students. In order to realize job submission in the computer room of low configuration, this paper brings forward the job submission system based on VB and BPFTP Server, analyzes the setting methods of user management, and illustrates the implementation process of job submission.
In order to improve the reliability of gas monitoring in coal mine, we design a wireless sensor networks with the piezoelectric gas sensors, The wireless sensor networks is suitable for gas monitoring in the severe environment of coal mine. The networks' topology is sub-cluster type, and the cluster head node is selected in competitive method. Data fusion and routing of the cluster nodes are controlled...
With data of Chinese electronic listed companies, this paper empirically analyzes the impact of corporate governance structure, operation situation and external environments on the voluntary disclosure of companies' information. The findings suggest that the share ratio of circulation stock, percentages of independent directors, separation of chairman of the board and CEO, company size and profitability...
SaaS(Software as a Service) has recently made a great impact on the software industry and changed the traditional lifetime of software. To obtain the benefit of SaaS, more and more software products have been converted into SaaS model, including business workflow management systems (BWfMS). Compared with the traditional BWfMSs, SaaS oriented BWfMSs introduce a new set of features which demand a new...
Oil spills in the ocean are one of the major environmental concerns. Some sensors, such as MODIS, and AVHRR, have been used to detect oil spills which often appear differently from the surrounding waters on the images. However, any single sensor can not offer the required temporal acquisition rate of the same area, to guarantee the possibility to monitor the large oil spill dynamically. In this study,...
This paper is based on the collection of atmospheric environment quality monitoring data and analysis of atmospheric environment quality evaluation method of Jining from 2002 to 2009. By aiming at coupling and complex dynamics of atmospheric environment, we apply fuzzy comprehensive evaluation method, and make an evaluation of atmospheric environment quality of Jining over the years. The results show...
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