Liquefied Natural Gas Logistics Management Through Optimal Road-Rail Intermodal Logistics Planning Considering Community Safety

Junsang, Porntip; Jaturanonda, Chorkaew; Wuttipornpun, Teeradej; Watcharejyothin, Mayurachat

doi:10.4018/ijkss.320486

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…Currently, KG storage methods mainly adopt a traditional relational database, RDF (request definition file) triple, and graph database. Among these, the "graph" data structure is an ideal management tool for KGs, as it can efficiently handle the operations of various complex relationships and is utilized for graph database storage (Junsang et al, 2023).…”

Section: Knowledge Storage Based On Neo4j Graph Databasementioning

confidence: 99%

Banking System Incidents Analysis Using Knowledge Graph

Kang

Cheung

2023

International Journal of Knowledge and Systems Science

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Risk incidents in the banks' systems have caused significant social impacts and economic losses. This study proposes a risk incident knowledge modeling and analysis approach based on the knowledge graphs to realize the effective integration and continuous accumulation of incident knowledge. The authors are the first to analyze the advantages of knowledge graphs in risk incident knowledge integration for the bank's core system. Moreover, they study and compare the related field's state-of-the-art models (including CRF, BiLSTM, BiLSTM-CRF, BERT-BiLSTM-CRF). This paper proposes an improved Bert-BiLSTM-CRF model to perform entity recognition which replaces “individual word mask and training” with “full word mask and training” targeted to solve the problem of low accuracy in the extraction of incident text entities in the banking system. Experiments on 1000 banking system incident material show that the improved Bert-BiLSTM-CRF model outperforms the state-of-the-art models based on the comparison of recall (R), precision (P), and F1-measure, with a 2%-9% improvement in the F1-measure.

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Section: Knowledge Storage Based On Neo4j Graph Databasementioning

confidence: 99%

Banking System Incidents Analysis Using Knowledge Graph

Kang

Cheung

2023

International Journal of Knowledge and Systems Science

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“…The transportation of natural gas to its destination is a very acute issue worldwide. To solve this issue, specialists used various methods of transportation: motor transport [1], tankers [2], railways [3], and main gas pipelines [4]. The latter method is currently the most acceptable due to its cost-effectiveness, which can be attributed to the following advantages: high speed of delivery to plants and storage points, wide geographical coverage, transporting the product over long distances, ensuring uninterrupted deliveries regardless of climatic conditions, and minimal resource losses during transit.…”

Section: Introductionmentioning

confidence: 99%

Finite-Element Modeling of the Dynamic Behavior of a Crack-like Defect in an Internally Pressurized Thin-Walled Steel Cylinder

Zhangabay,

Ibraimova,

Bonopera

et al. 2024

Applied Sciences

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This article presents one part of a study on the dynamic deformation and fracture of sections of steel gas pipelines with an external crack-like defect under the action of internal pressure. This work was performed on the basis of finite-element simulations using a cylindrical shell model executed by ANSYS-19.2 on the example of the section of the steel gas pipeline “Beineu–Bozoy–Shymkent” in the Republic of Kazakhstan. The propagation of the incipient crack-like defect along the pipeline and the resulting dynamic fracture in its tip area were investigated. The options of pipeline loading by working and critical internal pressure were both considered. It was found that, within the time of 1.0 ms, the formed crack expanded in the circumferential direction up to the maximum value, which depended on the value of the internal pressure. A further growth of cracks occurred along the longitudinal direction. At the operating pressure, the initial length of the crack increased by a factor of 5.6, while the equivalent stresses increased by a factor of 1.53 within 3.5 ms. Within the time of 3.75 ms, the equivalent stresses stopped growing due to the gas decompression. Specifically, there was a stop to the crack growth along the longitudinal direction. Vice versa, at the maximum pressure, the pipeline fracture did not change qualitatively, while at the time of the process, it decreased up to 3.5 ms. The finite-element results of the stress–strain state and pipeline fracture in the crack tip area at the working pressure showed that, within the time of 1.0 ms, the distance between the crack walls reached 23 mm at the free edge. Conversely, within the time periods of 2.25 and 3.5 ms, it increased two and three times, respectively. The crack elongation in the longitudinal direction occurred 5.8 times with time. Together, within the time of 3.5 ms, the equivalent stresses increased twice, after which the growth of the crack stopped due to the gas decompression. Moreover, studies on the growth of the crack-like defect in its tip area at the maximum pressure showed that additional considerations on the pressure on the crack edges led to an increment of 3.6% of the crack length. The results of this work can be used for the development of measurements for operating gas pipelines in the field of structural reinforcement.

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