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A ring oscillator physical unclonable function (RO PUF) is an application-constrained hardware security primitive that can be used for authentication and key generation. PUFs depend on variability during the fabrication process to produce random outputs that are nevertheless stable across multiple measurements. Unfortunately, RO PUFs are known to be unstable especially when implemented on an Field...
Heterostructures of carbon nanotube on graphene, CNT-graphene, with two graphene layers connected by a CNT normal to the graphene planes, are investigated using first-principle calculations, leading to computed density of states (DOS) and electron transmission spectra. Based on these results, the structure consisting of graphene and a (4,4) CNT is determined to be metallic while that of graphene and...
Sequences of duplicate code, either with or without modification, are known as code clones or just clones. Code clones are generally considered undesirable for a number of reasons, although they can offer some convenience to developers. The detection of code clones helps to improve the quality of source code through software re-engineering. Numerous methods have been proposed for code clone detection...
This paper establishes a risk assessment index system for oil and gas resource countries, with 46 screened indicators across 5 dimensions, namely political risk, economic risk, investment risk, oil and gas resources risk, and the Chinese factor. Furthermore, by using the principal component analysis method, the 46 risk indicators were narrowed down to 16 principal components. Subsequently, a support...
An efficient, rigorous and intuitive modal formalism (valid for lossy and dispersive media) to model light interaction with resonant metallic nanostructures is proposed. It is the analogue of the modal waveguide formalism for electromagnetic resonators.
Service innovation has become a key factor to enterprises' competitiveness. Enterprises must constantly engage in innovation activities to maintain their competitive advantage. This study examines the case of Lungyen Life Service Corporation. The funeral industry of Taiwan is in great need of modernization and new concepts from service innovation. Past studies related to the funeral industry focused...
Complex systems design requires a time-consuming verification process in support of the safety and maintenance requirements. In this paper, we describe an integrated verification flow of system requirements as well as system fault behaviors and fault-tolerant properties. The process converts XML-based architectural descriptions into SystemC simulation modules tied to predefined libraries. Flexible...
Physical Unclonable Functions are promising candidates for lightweight authentication applications as they are hard to predict and clone. PUFs are dependent on process variations that occurs during silicon chip fabrication. As the CMOS technology scales down towards nanoscale dimensions, there are increasing transistor reliability challenges which impact the lifetime of integrated circuits. These...
A robust semi-supervised concept factorization (RSSCF) method is proposed in this paper, which not only makes good use of the available label information, but also addresses noise and extracts meaningful information simultaneously. In the proposed method, a constraint matrix is embedded into the basic concept factorization model to guarantee data with the same label share the same new representation...
In this paper, we consider the construction of True Random Numbers Generators (TRNGs) using variations in power supplies. We demonstrate that power supply line outputs do not have a constant voltage and the variations in voltage follow a normal distribution. These variations can be used to create truly random bits that demonstrates a high entropy rate based on the results obtained from the NIST Statistical...
Hadoop is a popular cloud computing software, and its major component MapReduce can efficiently complete parallel computing in homogeneous environment. But in practical application heterogeneous cluster is a common phenomenon. In this case, it's prone to unbalance load. To solve this problem, a model of heterogeneous Hadoop cluster based on dynamic load balancing is proposed in this paper. This model...
In recent years, the research on caching in cloud environment has become an important research topic, and it has profound meaning to research the cache replacement algorithm in hybrid Cloud. There aren't enough considerations on some aspects, such as the selection of pending cache files, the prefetching of pending cache files among different clouds and the cost of recovery of files. Considering those...
Research on MapReduce tasks scheduling method for the hybrid cloud environment to meet QoS is of great significance. Considering that traditional scheduling algorithms cannot fully maximize efficiency of the private cloud and minimize costs under the public cloud, this paper proposes a MapReduce task optimal scheduling algorithm named MROSA to meet deadline and cost constraints. Private cloud scheduling...
Survey of tree height always plays an important role in forest production, investigation, scientific research and education. This paper presents works, measurement process of measuring tree height in laser and the precision compute. This paper presents two measurement methods, to elucidate the conceptual and practical feasibility of the measurement provided in this paper, respectively by comparing...
Uncertainties in frequency regulations (FR) of generators and loads, and their effects on probabilistic power flow (PPF) analysis are addressed in this paper. The conventional PPF analysis is based on power flow model, without considering the frequency regulation. However, according to frequency regulation characteristics, generation outputs and load demand will respond to frequency deviation. Furthermore,...
Accurately estimating the probability distribution of renewable power production is a fundamental and challenging task in the probabilistic analysis of power systems with a high penetration of renewable energy. In this study, a novel hybrid method of minimum frequency and maximum entropy (MFME) is proposed for accurately and rapidly estimating the probability density function (PDF) of renewable power...
The smart phones and their applications add the richness of the VANET applications and increase the requirements on data dissemination support of the networks. This paper focuses on the link reliability model for data dissemination in urban VANETs. First, we extend the analytic model on 1-dimension road to the roads with orthogonal crossings. Then, we verify the link reliability model for the irregularly...
In urban areas, WiFi is the most widely-deployed portal for users to acquire the broadband access. Meanwhile, phishing AP (access point)-a rogue AP that falsifies the SSID (or even the BSSID) of a legitimate corporate AP-has caused many security problems in commodity WiFi networks. Existing research on the phishing AP detection can be divided into two categories: (1) the hardware-based approach usually...
Wire bonding technology has been used extensively in making electrical connections in microwave module. In microwave module, wire bonding technology is one of the key process, RF consistency, reliability and lifetime of microwave module is influenced directly by quality of wire bonding technology. Factors influencing quality of wire bonding technology in microwave module is studied in the paper. The...
This paper proposes a probabilistic power flow analysis technique based on the stochastic response surface method. The probability distributions and statistics of power flow responses can be accurately and efficiently estimated by the proposed method without using series expansions such as the Gram-Charlier, Cornish-Fisher, or Edgeworth series. The stochastic continuous input variables following normal...
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