While offshore wind energy is showing enormous potential, effective approaches to enhance its economics are being sought at the same time. The design of maintenance strategy a type strategic decision-making for farms, aiming improve production and reduce expenses. As complicated challenging task, confronted with various types uncertainty in model. presence affects estimation performance, renders determined decisions sub-optimal or even inappropriate. In this paper, authors propose an...

The determination of maintenance strategies is subject to complexity and uncertainty arising from variable offshore wind farm states inaccuracies in model parameters. most common method the existing studies adopt an open-loop approach optimize a strategy. However, this lacks ability capture periodic operational state awareness eliminating uncertainty. Consequently, determined strategy inadequate instruct activities, inducing excessive revenue losses. In paper, closed-loop optimization...

The complex structure and harsh operating environment of wave energy converters can result in various faults transmission components. Environmental noise practical situations may obscure the effective information collected vibration signals, significantly increasing difficulty fault diagnosis. This paper presents a diagnosis model for gearbox point absorber converter. integrates convolutional neural network with long short-term memory to realize efficient extraction local features from...

Effective operation and maintenance (O&M) management is significant for enhancing the economic performance of offshore wind farms. Despite recent research progress in O&M, there remains a gap integrating health prognostics spare parts inventory into decision-making processes at scale To bridge this gap, paper develops an optimisation framework these aspects to establish cost-effective joint policies. In framework, policy firstly developed plan actions based on component opportunities....

Operation & maintenance (O&M) costs account for a large portion of total life cycle cost onshore wind energy, and the amount is estimated to be more offshore energy. Developing sound opportunistic strategy solution reduce O&M enhance energy's competitiveness. When farm located offshore, turbines are not only subject degradation but also impact from harsh marine environment. However, mainly regarded as cause failure in existing models energy sector. At same time, too frequent preventive...

Offshore wind energy is expected to be the most significant source of future electricity supply in Europe. farms are located far from shores, requiring a fleet various types vessels access sites when maintaining offshore turbines. The employment costly, accounting for majority total O&M costs energy. Therefore, configuring size and mix vessel support maintenance operations cost-effective manner an issue importance enhance economics sector. In this paper, discrete event simulation based model...

Large-segment bone defect caused by trauma or tumor is one of the most challenging problems in orthopedic clinics. Biomimetic materials for tissue engineering have developed dramatically past few decades. The organic combination biomimetic and stem cells offers new strategies repair, fate closely related to their extracellular matrix (ECM) properties. In this study, a photocrosslinked methacrylated gelatin (Bio-GelMA) hydrogel scaffold was prepared simulate physical structure chemical...

A growing consensus in the literature on how to improve quality of learning suggests that adaptions problem-based (PBL) methods could firstly experiences, problem solving, skill acquisition and a reasonable level transfer from student perspective, secondly develop better professional competence preparation these needed highway capacity analysis skills. This paper describes educational basis problem-oriented project-based (POPBL) approaches have been developed as an integral part four-year...

SignificanceOptical coherence tomography (OCT) is widely utilized to investigate brain activities and disorders in anesthetized or restrained rodents. However, anesthesia can alter several physiological parameters, leading findings that might not fully represent the true state. To advance understanding of function awake freely moving animals, development wearable OCT probes crucial.AimWe aim address challenge insufficient depth field (DOF) for imaging mice, ensuring high lateral resolution...

Cycling is well acknowledged as one of the most energy-efficient and healthy modes transport; walking follows closely. Many approaches models have been devoted to finding ways increase proportion bicycle trips. However, significant uncertainty exists about level effectiveness added cycling facilities. Few studies conducted a detailed cost–benefit analysis (CBA) To fill this knowledge gap, comprehensive method proposed for estimating important benefit components expenses associated with...

Road rage is accepted as a legitimate danger to the safe, effective, and efficient operation of transportation system, it important understand its prevalence, characteristics drivers that can be used predict potential for it. By distributing modified version Deffenbacher Driving Anger Scale wide variety compiling data collected from that, was possible determine just how common driving anger road truly were. It found nearly all either gender any age were prone at least moderate levels anger,...

The government has set an ambitious target of renewable energy development in Malaysia. As a promising source, wind plays important role the Malaysia roadmap. Compared to onshore energy, offshore resources with better quality can be provided areas away from coast, which greater potential contribute electricity generation. Wind and bathymetry conditions are two factors that determine feasibility economics turbines. In this paper, investigation is conducted on around data source mainly...

Traditionally, the process used by public transportation entities to determine acquisition strategy for new vehicle asset is based upon a broad range of criteria. Vehicle cost has been cited as one more critical factors which decision makers consider. It currently common practice consider other (life-cycle cost, fuel efficiency, reliability, environmental effects, etc.) that contribute comprehensive approach. This study investigates next generation advancements in making tools area...

Travel time and delay are among the most important measures for gauging a transportation system’s performance. To address growing problem of congestion in US, planning legislation mandated monitoring analysis system performance produced renewed interest travel studies. The use traditional sensors installed on major roads (e.g. inductive loops) collecting data is necessary but not sufficient because their limited coverage expensive costs setting up maintaining required infrastructure....

The analysis of potential operating problems in a port facility is an enduring theoretical and practical problem. Because the complexity problem, many existing methods have difficulties providing fast reliable multipurpose facility. In this study, simulation model developed to overcome difficulty by analysing operation regional seaport Delaware, USA. implemented identify possible bottlenecks optimise port. results are used choose optimal change significant elements (ship turnaround time,...

A serpentine micromixer (SMM) is a high-efficiency chaotic due to the high mixing efficiency caused by Dean flow. novel scaling method, selective scaling-out strategy, can be used significantly increase fluxes, facilitating application of SMMs in industrial production. However, no criteria for scale-out are available. In this article, series scaled-out were numerically studied at fluxes up 150 mL/min. The hydrodynamic properties these investigated using residence time distribution (RTD),...

In this article, a novel simulation–optimization method is proposed for the simultaneous design of heat-integrated coal-to-SNG/MeOH (CTSM) polygeneration process, aiming at exergy efficiency enhancement. The genetic algorithm adopted to simultaneously optimize presented which combines key reaction units based on rigorous kinetic modeling and simulation with waste heat recovery steam cycle (WHRSC). A integration approach that considers variable stream conditions introduced connect CTSM WHRSC....