scholarly journals Design, Development and Applicability Evaluation of a Digital Cartographic Model for 3D Cadastre Mapping in China

2021 ◽  
Vol 10 (3) ◽  
pp. 158
Author(s):  
Chen Wang ◽  
Chang-bin Yu
Keyword(s):  
Ad Hoc ◽  
General Purpose ◽  
Design Development ◽  
Content Creation ◽  
Related Information ◽  
Proposed Model ◽  
3D Cadastre ◽  
Graphic Content ◽  
Content Modeling ◽  
Semantic Transformation

Structurally describing the portrayal-related information by using a standalone Digital Cartographic Model on top of a Digital Landscape Model has been proved applicable and beneficial for 2D mapping but has not yet been applied to 3D cadastre. This study, therefore, evaluates the applicability of digital cartographic model and the corresponding visualization pipeline for 3D cadastre in the context of Chinese urban cadastre. This research starts by identifying the requirements and design features of 3D cadastre mapping through a literature review and interviews with users and cartographers. Addressing the limitations of the existing general-purpose models, this paper proposes an ad hoc 3D cadastre digital cartographic model. The main developments of the proposed model are the inclusion of 3D content modeling, the support of the compound 3D symbols, and the introduction of the semantic transformation. The proposed model is then embedded into three parts of the cadastre visualization pipeline: the symbolic rule design, graphic content creation, and scene dissemination. The empirical result of qualitative proof-of-concept user tests supports that the proposed visualization pipeline is applicable and yields promising visualization results. The digital cartographic model-based visualization pipeline is a novel 3D cadastre mapping paradigm that facilitates designing, producing, sharing, and administrating.

FEATURES OF MOLECULAR ANALYSIS AS A REAL-TIME INTERNET SERVICE

2021 ◽  
Author(s):  
М.В. ЗАХАРОВ
Keyword(s):  
Traffic Flow ◽  
Simulation Modeling ◽  
General Purpose ◽  
Service Delivery Model ◽  
State University ◽  
Network Delay ◽  
Software Environment ◽  
Internet Service ◽  
Saint Petersburg ◽  
Proposed Model

Приведен обзор особенностей применения портативныхNIR спектрометров общего назначения, используемых для анализа состава продуктов питания и лекарственных средств. Представлена модель агрегированного потока сетевого трафика от нескольких спектрометров и модель предоставления услуги, обеспечивающая снижение сетевой задержки и объема передаваемых данных. Рассмотрен метод построения сети на основе граничных вычислений для снижения сетевой задержки. Для проверки предложенной модели и метода проведено имитационное моделирование в среде AnyLogic. The Bonch-Bruevich Saint-Petersburg State University of Telecommunications The article provides an overview of the features of the use of portable general-purpose NIR spectrometers to analyze the composition of food or medicines. A model of the aggregated network traffic flow of several spectrometers and a service delivery model, which provides the reduction of network delay and amount of transmitted data, are presented. A method of constructing a network based on edge computing for reduction of network delay is considered. To verify the proposed model and method simulation modeling was carried out in the software environment AnyLogic.

Integrated Multiple Attributive Decision Support System for Producibility Evaluation in Ship Design

2004 ◽  
Vol 20 (03) ◽  
pp. 147-163
Author(s):  
Osman Turan ◽  
Selim Alkaner ◽  
Aykut i. Ölçer
Keyword(s):  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Ad Hoc ◽  
Labor Cost ◽  
Ship Design ◽  
Design Stage ◽  
Design Development ◽  
Shipbuilding Industry ◽  
Design For X

Ship design today can be viewed as an ad hoc process. It must be considered in the context of integration with other design development activities, such as production, costing, quality control, and so forth. Otherwise, it is possible for the designer to design a ship that is difficult to produce, requires high material or labor cost, or contains some design flaws that the production engineers have to correct or send back for redesigning before production can be done. Any adjustment required after the design stage will result in a penalty of extra time or cost. Deficiencies in the design of a ship will influence the succeeding stages of production. In addition to designing a ship that fulfills producibility requirements, it is also desirable to design a ship that satisfies risk, performance, cost, and customer requirements criteria. More recently, environmental concerns, safety, passenger comfort, and life-cycle issues are becoming essential parts of the current shipbuilding industry. Therefore, "design for X paradigm" should also be considered during the ship design stages. An integrated multiple attributive decision support system for producibility evaluation in ship design (PRODEVIS) is developed to use by industry and researchers in evaluating the producibility of competing ship designs and design features during the early stages of ship design by taking into account cost, performance, risk, and "design for X paradigm" attributes. This developed approach is a fuzzy multiple attributive group decision-making methodology where feasible design alternatives are conducted by a ship production simulation technique. In this approach, an attribute-based aggregation technique for a heterogeneous group of experts is employed and used for dealing with fuzzy opinion aggregation for the subjective attributes of the ship design evaluation problem. The developed methodology is illustrated with a case study.

Exploring gamers' crowdsourcing engagement in Pokémon Go communities

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Shavneet Sharma ◽  
Neale Slack ◽  
Kritika Devi ◽  
Tuma Greig ◽  
Samantha Naidu
Keyword(s):  
Structural Equation ◽  
Online Survey ◽  
Information Quality ◽  
New Wave ◽  
System Quality ◽  
Content Type ◽  
Content Creation ◽  
Related Information ◽  
Content Consumption ◽  
Pokémon Go

PurposeWith the increasing popularity of online games like Pokémon Go, a new wave of crowdsourcing communities have emerged, allowing gamers to collaborate, communicate and share useful game-related information. This paper aims to examine the factors that influence gamers' crowdsourcing behaviour.Design/methodology/approachA conceptual framework is developed that combines the DeLone & McLean model, self-determination theory, and different levels of engagement behaviour. The online survey collected 371 responses that were analysed using Covariance Based Structural Equation Modelling (CB-SEM).FindingsThe results show that extrinsic and intrinsic motivation positively influenced gamers' crowdsourcing engagement intention. System quality and information quality were also confirmed to be positively associated with gamers' crowdsourcing engagement intention. Furthermore, crowdsourcing engagement intention was found to be positively associated with crowdsourcing content consumption, contribution, and creation.Practical implicationsThe findings of this study are useful for the owners of Pokémon Go and other gaming-related crowdsourcing platforms in devising tailored strategies to increase the crowdsourcing engagement of gamers.Originality/valueThis study provides the first empirical evidence of factors motivating online gamers' crowdsourcing intention. This study also presents novel insight into online gamers' crowdsourcing intention by combining diverse theories which offer different perspectives and a more comprehensive understanding of the phenomenon. Contribution to the research on the intention-behaviour gap by modelling three behavioural outcomes (content creation, contribution, and consumption behaviour) of crowdsourcing engagement intention, is another important contribution of this study.

Building Quality Online Courses

2018 ◽  
pp. 309-331
Author(s):  
Veronica Outlaw ◽  
Margaret L. Rice ◽  
Vivian H. Wright
Keyword(s):  
Learning Styles ◽  
Online Courses ◽  
Online Course ◽  
Course Development ◽  
Instructional Designers ◽  
Design Development ◽  
Proposed Model ◽  
Online Course Development ◽  
And Training

The authors have personally experienced the burdens of creating online courses without the assistance of trained instructional designers. Many faculty are employed in conditions where they develop online courses without the proper knowledge and training of many essential aspects that should accompany the development of an online course (e.g., design, development, learning styles, copyright, design principles, accessibility, incorporating technology, and technical skills) (Singleton et al., 2013; Speck, 2000; Wickersham et al., 2007). The authors propose and describe the use of a detailed online course development and delivery model (Outlaw & Rice, 2015) that was created to provide distance education units with a systematic approach to course development. The proposed model nourishes the partnerships between faculty and designers to improve the quality of online courses, while providing the support faculty need to successfully create online courses. The authors discuss a model that provides consistency in efforts to create efficient workflows to develop online courses.

Security Assessment of Networks

2011 ◽  
pp. 115-130 ◽  
Author(s):  
Aftab Ahmad
Keyword(s):  
Ad Hoc ◽  
Ieee 802.15.4 ◽  
Performance Model ◽  
Assessment Model ◽  
Security Assessment ◽  
Network Applications ◽  
Proposed Model ◽  
Threat Categories ◽  
Service Oriented ◽  
Ieee 802.15.4 Standard

In this chapter, a novel performance model for assessing security of a layered network has been proposed. The work is motivated by the fact that there is a need for a reference framework to account for all threats to a networked system. There are few such models available, and one of them is recommended by the International Telecommunications Union (ITU). The proposed assessment model is based on the ITU security framework, recommended in the ITU-T Recommendation X.805. We employ this model to quantify network security against five threat categories mentioned in the recommendations. The quantification has been done based on the recommended measures against all threats. A threat vector has been proposed that defines required measures for a particular threat category. Other vectors, such as the security implementation vector define how effectively these measures are implemented in a given device, system, or network. As a simple application of the proposed model, the security provided by the IEEE 802.15.4 standard is analyzed, viewing it as an ‘end-to-end’ system (e.g., for ad hoc sensor network applications). The proposed security assessment model can be applied to any type of network (wireless, wired, optical, service oriented, transport, etc.). The model can be employed to obtain security assessment in the form of five security metrics, one for each threat category (destruction, corruption, removal, disclosure, and interruption). An expression for the overall security against all threats has also been derived.

Critical Infrastructure Management for Telecommunication Networks

2014 ◽  
Vol 5 (1) ◽  
pp. 1-13
Author(s):  
Haibo Wang ◽  
Bahram Alidaee ◽  
Wei Wang ◽  
Wei Ning
Keyword(s):  
Ad Hoc ◽  
Critical Infrastructure ◽  
Telecommunication Network ◽  
Telecommunication Networks ◽  
Critical Infrastructures ◽  
Infrastructure Management ◽  
Detection Model ◽  
Proposed Model ◽  
The Stability ◽  
Supporting Structures

Telecommunication network infrastructures both stationary and ad hoc, play an important role in maintaining the stability of society worldwide. The protection of these critical infrastructures and their supporting structures become highly challenged due to its complexity. The understanding of interdependency of these infrastructures is the essential step to protect these infrastructures from destruction and attacks. This paper presents a critical infrastructure detection model to discover the interdependency based on the theories from social networks and new telecommunication pathways while this study transforms social theory into computational constructions. The procedure and solution of protecting critical infrastructures are discussed and computational results from the proposed model are presented.

A Probabilistic Routing Protocol in VANET

2010 ◽  
Vol 2 (4) ◽  
pp. 21-37 ◽  
Author(s):  
Gongjun Yan ◽  
Stephan Olariu ◽  
Shaharuddin Salleh
Keyword(s):  
Ad Hoc Networks ◽  
Routing Protocol ◽  
High Speed ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Probability Model ◽  
Proposed Model ◽  
Probabilistic Routing ◽  
Hoc Networks ◽  
Manet Networks

The key attribute that distinguishes Vehicular Ad hoc Networks (VANET) from Mobile Ad hoc Networks (MANET) is scale. While MANET networks involve up to one hundred nodes and are short lived, being deployed in support of special-purpose operations, VANET networks involve millions of vehicles on thousands of kilometers of highways and city streets. Being mission-driven, MANET mobility is inherently limited by the application at hand. In most MANET applications, mobility occurs at low speed. By contrast, VANET networks involve vehicles that move at high speed, often well beyond what is reasonable or legally stipulated. Given the scale of its mobility and number of actors involved, the topology of VANET is changing constantly and, as a result, both individual links and routing paths are inherently unstable. Motivated by this latter truism, the authors propose a probability model for link duration based on realistic vehicular dynamics and radio propagation assumptions. The paper illustrates how the proposed model can be incorporated in a routing protocol, which results in paths that are easier to construct and maintain. Extensive simulation results confirm that this probabilistic routing protocol results in more easily maintainable paths.

scholarly journals Numerical investigation of passive stabilization of the surface temperature using PCM and metal foam

2018 ◽  
Vol 240 ◽  
pp. 05027
Author(s):  
Mirosław Seredyński
Keyword(s):  
Heat Transfer ◽  
Surface Temperature ◽  
Energy Transport ◽  
Metal Foam ◽  
Liquid Fraction ◽  
Heated Surface ◽  
General Purpose ◽  
Ansys Fluent ◽  
Proposed Model ◽  
Strong Relation

Stabilization of the temperature of PVs is of great importance, due to strong relation between operating temperature and its efficiency. Due to low thermal conductivity of PCM, intensification of heat transfer to the operating material is needed. The four fully passive PV’s temperature stabilization systems, based on the phase change material (PCM) are numerically investigated in this paper. Apart from the natural convection promotion, intensification of heat transfer is done with aluminium fins and aluminium foam. The simplified computational model based on the equilibrium formulation of energy transport equation, taking into account viscous and inertial fluid flow resistances in the porous material, is formulated and solved with the general purpose software - ANSYS Fluent. Proposed model is succesfully verified by comparing the results with available in literature numerical solutions.Simulations outcomes are presented, the temperature and liquid fraction distributions in proposed geometry configurations, temperature variations determined in selected points and averaged on the heated surface temperature plots. Presented results help to assign the best configuration.

scholarly journals Partial Compilation of ASP Programs

2019 ◽  
Vol 19 (5-6) ◽  
pp. 857-873 ◽  
Author(s):  
BERNARDO CUTERI ◽  
CARMINE DODARO ◽  
FRANCESCO RICCA ◽  
PETER SCHÜLLER
Keyword(s):  
Experimental Analysis ◽  
Ad Hoc ◽  
Blow Up ◽  
State Of The Art ◽  
Answer Set Programming ◽  
General Purpose ◽  
Combinatorial Problems ◽  
New Approach ◽  
Input Program ◽  
Evaluation Algorithm

AbstractAnswer Set Programming (ASP) is a well-known declarative formalism in logic programming. Efficient implementations made it possible to apply ASP in many scenarios, ranging from deductive databases applications to the solution of hard combinatorial problems. State-of-the-art ASP systems are based on the traditional ground&solve approach and are general-purpose implementations, i.e., they are essentially built once for any kind of input program. In this paper, we propose an extended architecture for ASP systems, in which parts of the input program are compiled into an ad-hoc evaluation algorithm (i.e., we obtain a specific binary for a given program), and might not be subject to the grounding step. To this end, we identify a condition that allows the compilation of a sub-program, and present the related partial compilation technique. Importantly, we have implemented the new approach on top of a well-known ASP solver and conducted an experimental analysis on publicly-available benchmarks. Results show that our compilation-based approach improves on the state of the art in various scenarios, including cases in which the input program is stratified or the grounding blow-up makes the evaluation unpractical with traditional ASP systems.

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