Proposed in this paper is a wireless sensor network source localization algorithm the three-dimensional space. By using measurements of received signal strength (RSS), two closed-form none-ambiguous estimators are proposed to geometrically locate position under shadowing noise channel. The dynamic adjustment scheme has been applied combat error ranging. With multiple RSS, lower bound also derived. numerical simulations show that outperform conventional least squares estimator, especially...

This research investigated the operations of a taxi fleet that uses electric vehicles to accommodate only those trips for which advance reservations are made. In such operations, dispatch system chains multiple form route and offers driver. unique problem is known as Singapore reservation with problem. Because have limited running time before recharging needed, minimizing number taxis used formulated customized paired pickup delivery window charging station. A two-phase heuristic approach...

This research involves a study of the existing taxi dispatch system employed by operators in Singapore. Based on booking surcharges, there are generally two categories bookings, current and advance. Current bookings requests that should reach customer immediately or within half an hour, advance made at least hour In this paper, novel trip-chaining strategy for based customized algorithm Pickup Delivery Problem with Time Window (PDPTW) was proposed. The idea is to chain several demand time...

GPS based location technologies can achieve high accuracy on meter level in outdoor environments, however, it cannot obtain position the indoor environment. Therefore, this paper, we propose a novel WIFI optimization approach fingerprint algorithm. Each contains set of intensity values detected WAPs, and then is defined as vector with fixed size. The proposed fingerprinting algorithm made up online offline phase, which generating database crucial issue. Particularly, at end training process,...

In recent years, application services based on indoor locations have become increasingly popular, attracting extensive research attention. Among these services, location technology Wi-Fi signal fingerprints has developed rapidly. However, wireless transmission is easily affected by the environment, which will lead to deviations in fingerprint of signal. To improve accuracy and reduce adverse effects environmental factors, a method for signals assisted smart phone built-in sensors proposed,...

Location-based services for mobile users provide a convenient means of filtering information based on current geographical position. However, the in traditional location service systems is provided through an abstract metaphor that user has to understand and translate into action. In this paper, augmented reality-based system individual recommendation proposed. The consists modules location, marker detection, three-dimensional (3D) display guide by combing reality with navigation technology....

Abstract Simulation on manufacturing process of production line is essential to reduce the cost and time layout design. Traditional simulation methods either have low fidelity or depend actual equipment external tools. Digital Twin a core element in Industry 4.0 viewed as next generation simulation. However, applying simulate inadequately researched. To assess lines advance, this paper proposes Manufacturing Integrated Platform (DTMSIP) embedded Cyber-Physical System (CPS). Powered by...

In order to solve the problem that customer's personalized need are not fully considered in existing multi-level logistics distribution network, combination of potential demand with introduced into network is proposed. According score data predict customer, and combined select best provider offer service. A supply optimization model constraints capacity, inventory capacity delivery time built whose objective sum service costs, costs transportation whole chain network. characteristics model,...

This research investigated the performance of an Electric Taxi (ET) fleet that catered solely for customers with advance reservations. In a previously related research, customized Paired Pickup and Delivery Problem Time Window Charging Station (PPDPTWCS) had been formulated to solve minimum number taxis would serve fixed set customer demand. The concept behind this optimization was chain multiple trips Stations (CSs) form route assigned taxi driver. paper sensitivity ET fleet's operations...

Abstract The Belt and Road Initiative (BRI) is an international project focused on creating a network of infrastructure strengthening trade links, primarily between China Europe. Transport goods within the BRI conducted through one maritime six rail economic corridors, which (New Eurasian Land Bridge) crosses territory Poland. This article covers issues related to impact regions participating countries aims determine position Podlaskie voivodeship compared other Polish voivodeships in BRI....

Within the era of Industry 4.0, Cyber-Physical Production Systems (CPPS) have been identified as a key technology that enables flexible manufacturing system (FMS) and ultimately accelerates paradigm shift to mass customization individualization. To address challenges FMS, we propose an Asset Administration Shell (AAS)-based approach for information modeling production processes capabilities role-based equipment within CPPS. On one hand, our intends decouple from resources functional roles...

Doubly fed induction generators and permanent magnet synchronous are widely used in wind power generation system recent years. However, they still have technological economic penalties, which limit their applications generation. This study presents a novel brushless doubly generator (BDFG) with the hybrid rotor, has several outstanding advantages, so as to penetrate into large‐scale offshore In this study, magnetic field modulation of rotor is studied detail. Owing decisive role ‘special...

This study proposes a capacitated centralized carrier collaboration multihub location problem (CAP-CCCMLP) for the small- to medium-sized less-than-truckload industry, with central entity (e.g., third-party logistics firm) seeking set of hybrid collaborative consolidation transshipment hubs help establish hub-and-spoke network that minimizes total costs collaborating carriers in system. A mathematical programming formulation is provided CAP-CCCMLP and shown be NP-hard. The model was solved...

Mainly studied order allocation of logistics service supply network under the background big data. According to characteristic prediction data, two-phase solutions `prediction data stage' and `model optimization are designed in network. The first stage through analysis massive amounts customer's location clicks predict best delivery time number demand. second is multi-level model with objective cost established. And selecting suppliers offer which customer was satisfied base on results...