bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on wind power prediction based on improved double wavelet transform and quantile regression forest
Authors: Huang Wenhui , Chen Ling 
Published: August 2024

Abstract
The random fluctuation of a wind power system will bring significant challenges to its stable operation when connected to the grid[1]. To reduce the impact of microgrid wind power integration on electric power systems and in response to the certain prediction inaccuracy of BP, LSSVM, and ARIMA-based prediction models in case of rapid fluctuation of actual power, a method of decomposing the original wind power sequence into several characteristic subcomponents through the improved double wavelet transform algorithm was proposed in this study to weaken the fluctuation of the wind power sequence. Specifically, a short-term wind power probability density prediction model based on the improved double wavelet algorithm and quantile regression method was established. Then, the original wind power sequence was decomposed into a series of components with different frequencies using the double wavelet transform method. Suitable components were chosen to construct a QRF prediction model to acquire the prediction results.
Multi-rate measurement fusion for power system state estimation
Authors: Zhu Jiaming , Gao Wengen 
Published: August 2024

Abstract
In recent years, the estimation of power systems has become increasingly critical. The introduction of Synchronized PMU has significantly enhanced the dynamic estimation capabilities of power systems. However, given the widespread deployment and usage of SCADA systems in the power grid, it is challenging to entirely replace SCADA systems with PMU systems in a short period. Therefore, utilizing a hybrid approach that combines the two systems for power state estimation is of utmost importance. This article achieves the integration of multi-rate and multi-sensor information in the power system by employing predictive interpolation on SCADA to match the sampling rate of PMU. The performance of power grid state estimation surpasses that of a single SCADA deployment.
Research on a short-term forecast of industry load based on PSO-LSTM
Authors: Jiao Dongxiang , He Ruiting , Wang Longyu , Zhang Ru , Zhang Bozhi , Dong Runting 
Published: August 2024

Abstract
Load prediction is crucial to maintaining a stable power grid and encouraging the use of innovative energy types like scenescape energy. The industrial load of a region accounts for a significant proportion of the total load, but the industrial load is difficult to predict due to its large fluctuations and instability. This study proposes a short-term power load prediction model, merging the Particle Swarm Optimization (PSO) algorithm and Long Short-Term Memory (LSTM) neural network. The PSO algorithm fine-tunes the LSTM network’s hyperparameters, which are then implemented on the LSTM layer. The trained model, using real-world datasets, is then tested for accuracy. Our model’s effectiveness is backed by practical examples.
Demand-side energy sharing mechanism with residential energy storage in active distribution networks
Authors: Jin Panlong , Zhou Zongchuan , Che Bin , Feng Xue , Wang Zhiyuan , Li Tengmu 
Published: August 2024

Abstract
With the widespread adoption of distributed new energy and residential energy storage (RES), demand-side users in active distribution networks (ADNs) are transitioning from traditional consumers to prosumers. The flexible resources of demand-side prosumers require an appropriate trading mechanism to achieve optimal resource allocation. A demand-side energy sharing mechanism based on residential energy storage is proposed. Firstly, a trading decision model for prosumer units is established by integrating the charge-discharge utility of RES devices with production-consumption characteristics. Then, a decentralized social welfare maximization energy sharing problem for ADNs is constructed using the Alternating Minimization Algorithm (AMA). Furthermore, a 10-node active distribution network is analyzed as an example. The proposed mechanism can maximize social welfare and increase the adaptation level of new energy from 64.58% to 66.83%.
Anomaly detection of power grid data based on storm cloud platform sliding window
Authors: Liu Shaowei 
Published: August 2024

Abstract
To realize the monitoring and diagnosis of multi-source data in the power industry and meet the real-time processing requirements of the power system, the storm-distributed real-time computing platform is introduced to process the data. On this platform, the streaming data processing model based on a sliding window is deployed to realize the anomaly diagnosis of data flow. By calculating the predicted value of a point and the confidence interval of the predicted value of the point, we can judge whether the actual point is an abnormal value. By testing the data processing capacity of a cluster and a single machine, the experiment shows that in the cluster environment, reasonably setting the component parallelism can improve the throughput of flow computing.
Research on data analysis method of oscillating water column wave energy converters
Authors: Zhang Yaqun , Li Xianhao , Sheng Songwei , Fan Zhaohui , Liu Jingfeng 
Published: August 2024

Abstract
Taking the floating oscillating water column central tube wave energy converters (OWC WECs) as the research goal, the Fourier transform (FFT), and the ensemble empirical mode decomposition method (EEMD) were used to statistically analyze the wave height, motion acceleration, velocity and displacement of the device in the physical model test from the perspective of a frequency domain. Through the Fourier transform, the energy spectrum of the incident wave and the motion of the WEC is obtained, and it is found that the peak frequency of the two is the same, that is, the period is 1.138s, but the peak energy of the former is slightly greater than that of the latter. Through the ensemble empirical mode decomposition method, the 1-8 intrinsic mode functions of the incident wave and the displacement of the device are obtained, which shows that the device efficiently captures the dominant frequency wave in the incident wave, that is, the wave height is 0.0628m, the period is 1.1s, and the motion displacement of the vertical direction obtained by the device is 0.0585mm, and the period is 1.1119s. At the same time, it absorbs low-frequency, long-period reflected waves in the pool. The analysis results of the two methods are highly consistent, and the OWC WEC shows good hydrodynamic performance, with efficient wave trapping ability and fast wave responsability. This paper’s research methods and results provide a basis for the later optimization of the device and a new idea for the data processing method of the WECs.
Study on the impact of large-capacity unit commissioning on the stability of the power grid using EEAC theory
Authors: Wu Haiyan 
Published: August 2024

Abstract
In view of the fact that the commissioning of large-capacity units in areas with weak grids may reduce the transient stability of the system and lead to a decrease in the load capacity of the power grid, this paper analyzes the phenomenon. Combined with the actual situation of a certain power grid, the equal-area rule and the extended equal-area rule are applied in this paper. It is pointed out that in the planning and design of the power grid, factors such as the structure of the sending-end power system, the output of the unit, and the short-circuit capacity of the area should be fully considered, in order to avoid the drop in the transient stability of the power grid due to the structural characteristics of the large machine, large load and small network of the sending end system. Finally, through simulation analysis, it is proposed that the transient stability and splicing load capacity of the regional power grid can be improved by controlling the output of the unit, expanding the main transformer, quickly removing the fault, improving the characteristics of the generator and its excitation regulation system, increasing the terminal voltage and reactive power output of the leading group of units, and cutting the machine.
Tetrahedral core sandwich panels behavior under bending loading
Authors: Antonova O V , Ivanov M V , Mikhailov A A , Kuzmin V A 
Published: August 2024

Abstract
Sandwich panel with complex core structure could be represented as a homogenous panel with anisotropic mechanical properties to describe the behavior at the macro level. Effective physical and mechanical characteristics were determined, representing the body as a homogeneous anisotropic continuum. The results of the numerical analysis of sandwich panels in case of bending were performed using ANSYS software. The effective elastic characteristics analysis for the periodicity cell of a sandwich panel shows that, to describe the stress-strain state of a panel with a similar tetrahedral core at the macro level, in addition to the orthotropic behavior in the panel plane, different elastic behavior occurs under tension and compression.
Control of electroactive shear waves in a piezoelectric waveguide by different surface actions
Authors: Mkrtchyan M H , Avetisyan L V 
Published: August 2024

Abstract
In various cases of electromechanical surface actions, the problems of surface control of the propagation of an electroactive transverse wave in a piezoelectric waveguide (piezoelectric class 6 mm of hexagonal symmetry) are considered. In both problems, one of the surfaces of the piezoelectric waveguide is mechanically free, and an electrical displacement normal to the surface acts. The second surface of the waveguide is firmly clamped and grounded, in one task, or there is a drift of electrons over the surface and there are no mechanical effects, in another task. The formulated initial boundary value problems are solved by the method of Fourier series. True electromechanical fields are built in the form of series of eigenmodes of electroacoustic oscillations in accordance with the harmonics of surface effects.
Analytical and numerical calculations of the control process in cases of surface action are given.
On diagnostics of the properties of functional-gradient composites considering rheology
Authors: Vatulyan A O , Varchenko A A , Yurov V O 
Published: August 2024

Abstract
The solution of inverse problems on determining the variable rheological properties of functional-gradient beams using additional information about the angle of rotation of the end section is presented within the framework of the most used models: Euler–Bernoulli and Timoshenko. Within the framework of the concept of complex modules, nonlinear operator equations are obtained that connect the given and sought functions (instantaneous and long-term module, relaxation time). The solution is based on the linearization method and the formulation of an iterative process, at each step of which it is necessary to solve complex-valued boundary value problems and invert completely continuous operators with complex-valued kernels. Functions reflecting the laws of change in long-term and instantaneous modules have been restored. The results of computational experiments in some special cases are presented.
Creation of an aluminum matrix composite with a core-shell carbide reinforcing phase with improved strength characteristics using selective laser sintering
Authors: Morozov P E , Sidorov Y V , Sufiyarov V S , Yurchuk D V , Semenov B N , Morozov N F 
Published: August 2024

Abstract
The development of methods for printing metal matrix composites with a ceramic reinforcing phase is an urgent task in materials science. The production of new MMCs with dispersed filling in additive technology facesproblems that are difficult to solve within the hardware framework of the method. Our research group proposed the approach to the production of MMCs using ceramic-metal core-shell particles, with a matrix soluble shell. It makes possible to develop a universal sequence of synthetic steps used to introduce reinforcing ceramic particles into an Al matrix. The introduction of metal-layer coated ceramic particles into the metal matrix allows maximal contact during sintering between the matrix and the reinforcing phase due to improved phases wettability. As a result, a technique was developed for printing a composite using selective laser melting based on an Al powder matrix (50 µm) and reinforcing core-shell carbide particles (TiC/Ni) with varying reinforcement degrees and improved strength characteristics.
Application of the finite element method to the endochronic theory of thermoplasticity for isotropic materials in a plane stress state
Authors: Kuvyrkin G N , Rakhimov D R 
Published: August 2024

Abstract
To describe the nonlinear deformation of isotropic materials under non-isothermal loading, it is proposed to use the endochronic theory of thermoplasticity. In this study, the governing equations of this theory are obtained for the general case of loading and for the case of a plane stress state. The calculated dependences of the finite element method in relation to endochronic theory are given, and computational methods of solution are also presented. In the last part of the study, an example of calculating a thin plate under complex loading is considered.
Healing of discontinuities in metal by the strong electromagnetic field treatment
Authors: Kukudzhanov K V 
Published: August 2024

Abstract
The results of a study microstructure of polycrystalline zinc specimens under by short pulses of the high-energy electromagnetic field treatment on them are presented. The aim is to study the possibility of healing micropores and microcracks inside the material during such treatment. The equipment used and the experimental technique are described, the analysis of the experimental data obtained is carried out. Metallographic studies of the zinc microstructure before and after HEEMF treatment confirm the assumption that in the process of such treatment, the decrease in its porosity may occur in the metal and, as a consequence, a significant increase in the ultimate plastic strain before fracture. Investigations of the polycrystalline structure of the metal have shown that the decrease in porosity is not the result of recrystallization.
An experimental research of the influence of the concentrated force application point on the hinge supported beam deflection under the condition of its value constancy in the middle
Authors: Valesyan S Sh , Sahakyan A A 
Published: August 2024

Abstract
An experimental research of the hinge supported beam maximal deflection under the condition of one’s constant value at the middle point subjected to concentrated force is carried. The influence of the force application point on the maximal deflection under the above-mentioned condition is studied. The comparison of experimentally obtained results with the theoretical ones is brought.
Study of readout system for 3He linear position sensitive detectors
Authors: Hua Nan , Gong Hui , Liu Yinong , Wang Xuewu 
Published: August 2024

Abstract
This study introduces a readout system for 3He linear
position-sensitive detectors (LPSDs), tailored for the Small Angle
Neutron Scattering (SANS) spectrometer of the Compact Pulsed Hadron
Source (CPHS) at Tsinghua University. Central to this system is the
employment of a trapezoidal filter as the primary signal shaper,
selected for its enhanced noise filtering capabilities and efficacy
in mitigating ballistic deficit. Additionally, the integration of a
digital CR filter aims to counteract baseline drift within trigger
signals. This innovative architecture underwent validation via
computer programs using experimental data, demonstrating superior
performance in spatial resolution compared to conventional Gaussian
filter-based approaches. Meanwhile, the improvement in spatial
resolution comes with a narrower pulse width, promising a higher
throughput at high count rates. When applied to a 16-tube detector
module, the system achieved an average position resolution of
3.63 mm (FWHM) at the central region and 4.03 mm at the end
regions. Furthermore, with a pusle width of 0.6 μs, the
96-tube detector array is promised to sustain a count rate over
1 Mcps.
Models and methods for transport demand and decarbonisation: a review
Authors: Thomas Hugh , Carmona Aparicio Luis Gabriel , Creutzig Felix , Hara Takuya , Hayashi Ayami , Ludovique Camila , Martinez Luis M , Natsuo Kishimoto Paul , Niamir Leila , Saheb Yamina , Trouvé Mallory 
Published: August 2024

Abstract
Rising global greenhouse gas emissions from the transport sector pose a major challenge to meeting the targets of the Paris Agreement. This raises questions of how technology, infrastructure and societal trends and policies can influence transport demand and thus also emissions, energy demand and service levels. Here, we review the literature on factors relevant to shifting total transport activity and mode shares, categorised into exogenous drivers, socio-behavioural, infrastructural and technological aspects. For each factor, we summarise current approaches to modelling and measuring the impact of each factor on transport systems, resulting in a proposed taxonomy to classify transport demand modelling approaches. We then comment on the suitability and sufficiency of existing modelling approaches for representing scenarios consistent with the Paris Agreement targets in models of the entire global energy system. Factors that affect transport demand are currently insufficiently represented in integrated assessment modelling approaches and thus emission reduction pathways. Improving the comprehension and representation of diverse factors that affect transport demand in global energy systems models, by incorporating features of complementary models with high resolution representations of transport, holds promise for generating well informed policy recommendations. Accordingly, policies could influence the development of the factors themselves and their potential role in mitigating climate change.
Siliciclastic Reservoir Geo-modeling using TGS-SIS hybrid algorithm of the Upper Cibulakan Formation, Offshore Northwest Java Basin
Authors: Renaldi Harlan , Surjono Sugeng S , Winardi Sarju , Dani Setiawan P. K. 
Published: August 2024

Abstract
The Upper Cibulakan is the primary hydrocarbon-producing formation in the Offshore Northwest Jawa area, operated by PHE ONWJ (Pertamina Hulu Energy Offshore Northwest Jawa). The productive interval in this formation comprises alternating sandstone and shale up to 45 feet of thick. Geologically, this interval is a shallow marine deposit with strong influence of tidal in the Ardjuna Sub-Basin, offshore part of Northwest Jawa Basin. The good quality reservoir layer is associated with Tidal Sand Ridges (TSR) facies characterized by lenticular sedimentary structures and the occurrence of shale intercalation in sandstone. The occurrence of shale, regarding its facies association package, varies greatly and significantly determines the quality of the reservoir. The geometry and quantity of facies distribution and association will significantly affect the calculation of hydrocarbon reserves during the modelling processes. Considering this, the selection of modeling methods and algorithms must be carried out appropriately. The use of the SIS (Sequential Indicator Simulation) algorithm in describing the TSR facies distribution still has shortcomings in randomness. Correspondingly, it requires to be combined with the TGS (Truncated Gaussian Simulation) method as it plays a great impact in calculating the distribution of sandstone and reservoir geometry. Meanwhile, SIS defines shale intercalation within TSR facies. Combining these two methods produces a more precise model of TSR facies associations. Besides, the concept of reservoir deposition is easier to explain based on the outcome result from the combined methods.
Discontinuity Measurement for Slope Failure Analysis with Structure from Motion Method Using Drone on A Slope in Hargowilis, Kokap District, Kulon Progo Regency, D.I. Yogyakarta Province
Authors: Pieter Chandra A.W , Setianto Agung , Gde Budi Indrawan I 
Published: August 2024

Abstract
The measurement of the discontinuity area is one of the important data to determine the slope failure kinematics. Discontinuity measurement can be done by geological compass measurements, but only limited to areas that can be reached and safe. Methods that can help measure the discontinuity plane is Structue from Motion techniques. This method uses raw data in the form of outcrop photos that are processed into point clouds to be processed into a 3-dimensional model. This model is used to measuring the position of the discontinuity plane digitally with a FACETS plug-in by CloudCompare software. FACETS plug-in performs a measurements automatically with the Kd-Nearest algorithm for two sides of of the outcrop. Side-1 has a dimension about 60 meter length and 25 meter height with slop face direction to the east an Side-2 has a dimensions about 25 meter length and 20 meter height, facing south. Side-1 kinematic analysis showing 8.97% of falilure mechanism are oblique. Meanwhile, wedge sliding are the most possible slope failure type happen ini Side-2 with 27,05% chance.
Lithological Control to the Gold Mineralization in the Main Ridge Complex of the Bakan Gold District, Northern Sulawesi, Indonesia
Authors: Pratama A , Idrus A , Warmada I W , Saifullah  
Published: August 2024

Abstract
Main Ridge complex is characterized by prominent high sulfidation epithermal-style mineralization with windows of porphyry style mineralization in the deeper zone. Several lithologic features play important controlling role in the occurrences of those mineralization. The oldest rock observed in the Main Ridge complex is unmineralized hornblende diorite (IDO-1) which encompasses the whole Bakan district. Several late intrusive stocks were concealed below the current topographic as mentioned as the microdiorite (IDO-2) and quartz diorite (IDO-3) in which the latter exhibits windows of porphyry-style mineralization. Those intrusive units were then covered by two unconformable volcanic tuff sequences which are andesitic tuff and dacitic tuff in compositions. Dacitic tuff is more favourable unit for gold mineralization compared to andesitic tuff which shown by near-surface ‘mushroom-like’ deposit form. In more peripheral area, the mineralization is also controlled by the bedding features of dacitic tuff which underlain by the less-mineralized andesitic tuff. In the latest stage, diatreme breccia cut all the lithologic units and becomes the most favourable host rock in sub-vertical deposit form. The comprehensive understanding of the lithological features is important to understand the mineralization control for further exploration target.
Low-rank coal upgrading to optimize its utilization as fuel
Authors: Fatia Umar Datin , Zulfahmi  , Madiutomo Nendaryono , Monika Ika , Setiawan Liston , Wijaya Truman , Akhdiat Daranin Edwin , Gunawan  
Published: August 2024

Abstract
Indonesia’s coal resources and reserves are mostly categorized as low-rank coal, lignite and sub-bituminous coals. Most of them have a high content of moisture, a low calorific value, and a high tendency to low-temperature oxidation and self-combustion, making them difficult to transport over long distances. To increase the utilization of the low-rank coals, a drying treatment was carried out by heating the coal at a temperature and pressure of 160°C and 3.5 Bar respectively for about 15 minutes. Two low-rank coal samples, from South Sumatra (A coal) and South Kalimantan (B coal) were used in this research. The result indicates that the degree of dewatering of A coal is 89.00% while B coal is 95.5%. B Coal has a higher inherent moisture content which generally has more capillary water which is relatively easier to remove. The higher the degree of dewatering the higher the calorific value degree of improvement. The calorific value of the A coal increased by 27.16% and the B coal increased by 40.65%. The combustion characteristic obtained from the thermogravimetry-differential thermal analysis shows that the A and B upgraded coals have a lower tendency to spontaneous combustion than that of the raw coals.