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Social media creates a novel marketing mechanism to boost opinion formation and information diffusion. As a crucial idea, social influence sheds light on individuals' features in the process of communicating brand stories, and changes other consumers' opinions and behavior. Social media marketing has drawn great interests from scholars in a past decade, but the extant work neglects to establish an...
New algorithms for blocking artifact detection on a compressed satellite image by using a 7×7 block and for analyzing its characteristics are proposed. Blocking artifacts often appear on an image when it has a very high compression rate based on either the loss-compression or lossless compression. Localization of blocking artifact is useful for finding the image's characteristics. This study also...
This paper studies the Contrast and Brightness Enhancement Technique for Scanning Electron Microscope images. Low contrast and/or brightness SEM image may have some hidden or information loss due to this limitation from image environment. This leads to the design of Minimum Mean Brightness Error Quad Histogram Equalization (MMBEQHE) technique. The MMBEQHE improves the visual image quality (qualitative...
The main goal of supervised data analytics is to model a target phenomenon given a limited amount of samples, each represented by an arbitrarily large number of variables. Especially when the number of variables is much larger than the number of available samples, variable selection is a key step as it allows to identify a possibly reduced subset of relevant variables describing the observed phenomenon...
The development of database systems and applications requires the use of metrics to evaluate the quality and the efficiency of each phase, especially as regards the physical phase, where logical, physical and hardware optimizations are mainly used. Since the 1980s, a large range of cost models has been proposed. Each cost model is dedicated to the calculation of specific metrics and mainly pertains...
This paper presents an image processing algorithm to highlight important features from Diptera wings, as a first step towards the development of an automated analysis tool for the identification, at a species level, of certain genres of Diptera based on their wings morphological characteristics. The present algorithm includes: patterns, landmarks, and spot cells, identification through filters, edge...
The location problem of interconnected facilities on the parallel lines with forbidden gaps is considered. Location in forbidden gaps is not allowed. The located facilities are connected among themselves and with gaps. The rectangular metric is used. It is need to minimize the total cost of connections between facilities and between facilities and gaps. The problem is an adequate model of many practical...
In view of the urgency of the problem of cancer diseases of the vocal apparatus and their treatment by surgery relevance of speech rehabilitation of patients is increased. This article describes the phoneme pronunciation quality assessment system, its inputs, outputs and internal parameters. Presented a mathematical model of the system, a functional model of the system in the form of contextual diagrams...
Robots capable of both locomotion and interaction with the environment are necessary for robots to move from ideal laboratory situations to real applications. Snake robots have been researched for locomotion in unstructured environments due to its unique and adaptable gaits. However, they have not been used to interact with the environment in a dexterous manner, for example to grasp or push an object...
The paper sets aside details of instrumentality to reveal the nature of the problem addressed by measurement. Its title is based on the title of a 1894 paper by Prof. W.E. Ayrton and his student H.C. Haycraft. They described a new and simplified method of measurement to improve the teaching of their underlying topic, and that is the goal of this paper. In the work described here, the measurand is...
In this paper we present motion optimization algorithms for computing manipulation motions in presence of obstacles. Our approach builds a geometric representation of the workspace by constructing Riemannian metrics using electric potentials emanating from the workspace obstacles. Velocity of the robot's body is measured with respect to this metric instead of traditional Cartesian velocity. Empirical...
Region of interest ROI image and video compression techniques have been widely used in visual communication applications in an effort to deliver good quality images and videos at limited bandwidths. Foveated imaging exploits the fact that the spatial resolution of the human visual system (HVS) is highest around the point of fixation (foveation point) and decreases dramatically with increasing eccentricity...
Indoor positioning is a key technology that enables the development of various smart and autonomous indoor applications. In recent years, wireless device is considered a promising technology enabler for indoor positioning despite facing various problems in the form of spatial, temporal, and device variation. Here we present a survey of problems in wireless-based indoor positioning and the state-of-the-art...
Optimal placement of sensors is a fundamental task to achieve high performance of different applications, especially in multi-sensor scenarios and complex environments. This paper proposes an alternative for automatically estimating the optimal placement of multiple microphones (individual or conforming arrays), in arbitrary complex indoor environments, for acoustic localization tasks. The proposal...
The demand for spare parts on the Chinese Space Station is always uncertain, meaning that an inventory for parts is difficult to confirm. A key problem on the space station is how to minimize the expected backorder number with limited resources. In this paper, a multi-ECHELON inventory model for worn spare parts based on the METRIC (Multi-ECHELON technology for recoverable items control) model was...
With the scale of small and medium hydropower increasing gradually, it is difficult to establish a detailed model because the parameters of each generating unit can barely be obtained. To build a dynamic equivalent model of the hydropower generator group, this paper presents an estimation-based equivalent method, which will keep the dynamic responses and the transient stability consistent before and...
Performance represents the completion of activities, programs, or policies to achieve the objectives, visions, and missions of organizations. The National Library of Indonesia is a government organization which provides public services. To improve its functions, the National Library established Electronic Library (E-Library) toward Information and Communication Technology (ICT) infrastructure aspect...
Handwritten character recognition is a translation problem of human writings into machine-editable text format. In this paper, hierarchical graph matching is presented for handwritten character recognition. Handwritten character was transformed into graphs based on its underlying skeleton structure. Edges of the extracted graph were categorized into shape types and vertices were extracted from each...
This paper presents a novel methodology of objective image quality assessment (IQA) based on Fuzzy Logic (FL) method. The main purpose is to automatically assess the quality of image in agreement with human visual perception. The used attributes (quality metrics) and evaluation criteria (human rating mean opinion score MOS) are extracted from image quality database TID2013. The fuzzy model design...
A well defined testing strategy is essential for any software development project. Testing efforts need to be carefully planed and executed in order to ensure effectiveness. Programming failures can represent a high risk for business. In order to mitigate such risk, companies have been increasingly investing more resources on software testing.
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