Linked-Object Dynamic Offloading (LODO) for the Cooperation of Data and Tasks on Edge Computing Environment

With the evolution of the Internet of Things (IoT), edge computing technology is using to process data rapidly increasing from various IoT devices efficiently. Edge computing offloading reduces data processing time and bandwidth usage by processing data in real-time on the device where the data is generating or on a nearby server. Previous studies have proposed offloading between IoT devices through local-edge collaboration from resource-constrained edge servers. However, they did not consider nearby edge servers in the same layer with computing resources. Consequently, quality of service (QoS) degrade due to restricted resources of edge computing and higher execution latency due to congestion. To handle offloaded tasks in a rapidly changing dynamic environment, finding an optimal target server is still challenging. Therefore, a new cooperative offloading method to control edge computing resources is needed to allocate limited resources between distributed edges efficiently. This paper suggests the LODO (linked-object dynamic offloading) algorithm that provides an ideal balance between edges by considering the ready state or running state. LODO algorithm carries out tasks in the list in the order of high correlation between data and tasks through linked objects. Furthermore, dynamic offloading considers the running status of all cooperative terminals and decides to schedule task distribution. That can decrease the average delayed time and average power consumption of terminals. In addition, the resource shortage problem can settle by reducing task processing using its distributions.

IDENTIFICATION OF PARAMETERS OF MATHEMATICAL NON-LINEAR MODEL OF VESSEL LONGITUDINAL MOTION

The article considers the important task of modern control theory to construct an adequate mathematical model of a specific dynamic object or vessel movement, that is, its identifica-tion (structural or parametric). It is proposed to construct a nonlinear model of the longitudinal motion of the ship. Practical data were obtained experimentally, a brief description of the experimental platform for an unmanned boat and equipment used in the study of the object dynamic characteristics is given. It is noted that the boat is characterized by three modes of movement: displacement, transitional and planning. The relationship between the thrust of the propeller and the speed of the boat is determined. To solve the identification problem in the work, it is proposed to use the apparatus of power series. The power series coefficients are determined experimentally. The problem of selecting the coefficients of a power series can be solved using the least squares method. In order to avoid the cumbersome calculations there were used numerical optimization methods applying the capabilities of the MS Excel computing environment. The solution to the problem was obtained by using a different number of members of the power series (N = 1, 3, 5). The efficiency of the proposed approach is justified.

Backscatter communications with passive receivers: from fundamentals to applications

The principle of backscattering has the potential to enable a full realization of the Internet of Things. This paradigm subsumes massively deployed things that have the capability to communicate directly with each other. Based on the types of excitation and receivers, we discriminate four types of backscattering systems: (i) Dedicated Exciter Active Receiver systems, (ii) Ambient Exciter Active Receiver systems, (iii) Dedicated Exciter Passive Receiver systems, and (iv) Ambient Exciter Passive Receiver systems. In this paper, we present an overview of bacskscattering systems with passive receivers which form the foundation for Backscattering Tag-to-Tag Networks (BTTNs). This is a technology that allows tiny batteryless RF tags attached to various objects to communicate directly with each other and to perform RF-based sensing of the communication link. We present an overview of recent innovations in hardware architectures for backscatter modulation, passive demodulation, and energy harvesting that overcome design challenges for passive tag-to-tag communication. We further describe the challenges in scaling up the architecture from a single link to a distributed network. We provide some examples of application scenarios enabled by BTTNs involving object-to-object communication and inter-object or human-object dynamic interactions. Finally, we discuss key challenges in present-day BTTN technology and future research directions.

Use of computer for formation and development of practical skills of students in learning process of “straightforward uniform movement and straightforward uneven movement” in physics for VII classes

The presented article indicates the methods of teaching the lesson on the example of the topic “ Uniform Motion and Non-uniform Motion” for VII classes “Physics” both in full-time and in remote (synchronized) form, as well as the movement of the DCM object (dynamic computer model). The result was obtained by conducting studies and calculations on the model using Excel. According to the results of the course, it was revealed that the student comments on the mechanical motion along the sings, using computer programs and summarizing, knows how to summarize his observations. On the other hand, the article states that computer models differ in time by static and dynamic factors. And dynamic computer models differ in “controlled” and “unmanaged” computer models. Key words: computer, model, animation, practical skills, event, speed, time

A Comparative Approach for Standard Shadow Detection Methods

False tracking is the biggest problem identified in tracking. The reasons for this is identified as shadow of the object to be tracked which have their shape mapping to the shape of the object. Dynamic shadow detection is the field in which videos are used. Dynamic shadow detection is found to be more exposed in literature due to the possibility of comparison, frame differentiation, background subtraction. All this not being possible in case of static images as they represent a single frame and are not used to that extent. Taking this as a challenge this paper presents static shadow detection in which the static shadow detection methods are mapped with dynamic images within the domain of image processing.The results so obtained are then authenticated from the user side. Every user may have different views, so as to bring the evaluation at a standard level this qualitative evaluation is quantified so as to be represented in form of tables and graphs for further analysis.

As Manipulações em Tela Compondo a Dimensão Corporificada da Cognição Matemática

Dispositivos móveis com tela sensível ao toque estão nas mãos de todos. Ou, ainda, as mãos do homem da atualidade espelham smartphone. É difícil hoje imaginar o cotidiano sem um celular conectado e seus diferentes aplicativos. Do mesmo modo que o surgimento do compasso e de outros recursos de desenho mudou a forma de construir e entender conceitualmente determinado objeto matemático, os ambientes móveis de construção dinâmica também estão trazendo alterações ao aprendizado nos dias atuais. Este artigo traz ideias do campo da cognição, da linguagem e da neurociência para mostrar como elas podem orientar pesquisas com dispositivos com toques em tela; articula algumas dessas ideias a exemplos focados em formas de giro em uma tela ou com o próprio dispositivo; e ressalta as manipulações em tela como mais uma dimensão da cognição corporificada. Sublinha também a necessidade de incluir no pacote semiótico (escrita, fala, registros, construções em tela etc.) essa nova forma de interação e de manifestação e apropriação da linguagem.Palavras-chave: Dispositivos Móveis. Touchscreens. Tablets. Smartphones. IsometriasAbstractMobile devices with touchscreen are on the hands of all. Or rather, nowadays our hands mirror smartphone. It is difficult to imagine the daily lives without a connected cell phone and its different APP. In the same sense that the emergence of compass and other drawing resources changed the way we construct and conceptually understand a particular mathematical object, dynamic mobile environments are bringing for learning nowadays. In this article I bring ideas from the field of cognition, language, and neuroscience to show how they can guide researches with touchscreen devices. I articulate some of these ideas to examples focused on ways of turning on a screen or with the device itself. The article highlights the manipulations on screen as one more dimension of embodied cognition. It also emphasizes the need to include in the semiotic bundle (writing, speech, inscriptions, constructions on screen, etc.) this new form of interaction and manifestation and appropriation of language.Keywords: Mobile Devices. Touchscreens. Tablets. Smartphones. Isometries.

Dynamic Combined with Static Analysis for Mining Network Protocol's Hidden Behavior

Unknown protocol's hidden behavior is becoming a new challenge in network security. This paper takes the captured messages and the binary code that implement the protocol both as the studied object. Dynamic Taint Analysis combined with Static Analysis is used for protocol analyzing. Firstly, monitor and analyze the process of protocol program parses the message in the virtual platform HiddenDisc prototype system developed by the authors, record the protocol's public behavior, then based on the authors' proposed Hidden Behavior Perception and Mining algorithm, static analyze the protocol's hidden behavior trigger conditions and hidden behavior instruction sequences. According to the hidden behavior trigger conditions, new protocol messages with the sensitive information are generated, and the hidden behaviors are executed by dynamic triggering. HiddenDisc prototype system can sense, trigger and analyze the protocol's hidden behaviors. According to the statistical analysis results, the authors propose the evaluation method of Protocol Execution Security. The experimental results show that the present method can accurately mining the protocol's hidden behaviors, and can evaluate unknown protocol's execution security.

Truss Harbor Cranes Modal Design Elements Research

Dockside cranes must meet the relevant strength requirements that provide usefulness and not endanger the safety of their use. The vibration effect on structural safety hazard results from the impact of horizontal forces caused by the transport of goods for loading and transverse forces caused by wind, which can be dangerous for correct functioning. In addition, there are often serious effects of climate-related impacts of the environment, material fatigue, which actuates the degradation state of the object. Dynamic loads may therefor cause random effects that devastate the structures or lead to their catastrophic destruction. Recognizing the need to improve the testing methods of crane structures in order to assess their condition and assess their safety factors - this paper attempts to develop a methodology for testing the degradation of the selected portion of a construction crane - using experimental modal analysis, realized in simulation tests in the Inventor environment as well as at test stand research.