bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improvement of Digest2 NEO Classification Code—utilizing the Astrometry Data Exchange Standard
Authors: Vereš Peter , Cloete Richard , Weryk Robert , Loeb Abraham , Payne Matthew J. 
Published: October 2023

Abstract
We describe enhancements to the digest2 software, a short-arc orbit classifier for heliocentric orbits. Digest2 is primarily used by the Near-Earth Object (NEO) community to flag newly discovered objects for a immediate follow-up and has been a part of NEO discovery process for more than 15 yr. We have updated the solar system population model used to weight the digest2 score according to the 2023 catalog of known solar system orbits and extended the list of mean uncertainties for 140 observatory codes. Moreover, we have added Astrometry Data Exchange Standard (ADES) input format support to digest2, which provides additional information for the astrometry, such as positional uncertainties for each detection. The digest2 code was also extended to read the roving observer astrometric format as well as the ability to compute a new parameter from the provided astrometric uncertainties (

RMS
′

) that can serve as an indicator of in-tracklet curvature when compared with tracklet’s great-circle fit rms. Comparison with the previous version of digest2 confirmed the improvement in accuracy of NEO identification and found that using ADES XML input significantly reduces the computation time of the digest2.
Progressive unsupervised control of myoelectric upper limbs
Authors: Gigli Andrea , Gijsberts Arjan , Nowak Markus , Vujaklija Ivan , Castellini Claudio 
Published: October 2023

Abstract

Objective. Unsupervised myocontrol methods aim to create control models for myoelectric prostheses while avoiding the complications of acquiring reliable, regular, and sufficient labeled training data. A limitation of current unsupervised methods is that they fix the number of controlled prosthetic functions a priori, thus requiring an initial assessment of the user’s motor skills and neglecting the development of novel motor skills over time. Approach. We developed a progressive unsupervised myocontrol (PUM) paradigm in which the user and the control model coadaptively identify distinct muscle synergies, which are then used to control arbitrarily associated myocontrol functions, each corresponding to a hand or wrist movement. The interaction starts with learning a single function and the user may request additional functions after mastering the available ones, which aligns the evolution of their motor skills with an increment in system complexity. We conducted a multi-session user study to evaluate PUM and compare it against a state-of-the-art non-progressive unsupervised alternative. Two participants with congenital upper-limb differences tested PUM, while ten non-disabled control participants tested either PUM or the non-progressive baseline. All participants engaged in myoelectric control of a virtual hand and wrist. Main results. PUM enabled autonomous learning of three myocontrol functions for participants with limb differences, and of all four available functions for non-disabled subjects, using both existing or newly identified muscle synergies. Participants with limb differences achieved similar success rates to non-disabled ones on myocontrol tests, but faced greater difficulties in internalizing new motor skills and exhibited slightly inferior movement quality. The performance was comparable with either PUM or the non-progressive baseline for the group of non-disabled participants. Significance. The PUM paradigm enables users to autonomously learn to operate the myocontrol system, adapts to the users’ varied preexisting motor skills, and supports the further development of those skills throughout practice.
Improving Hydraulic Fracturing Productivity in Khalda Oil Fields (Western Desert -Egypt)
Authors: Ahmed Ahmed Abuzeid , Bayoumi Abdel Wahab Abdel Hameed 
Published: October 2023

Abstract
The hydraulic fracturing technique is used to create a highly conductive path between the reservoir and wellbore at an economic rate. There are two types of hydraulic fracturing based on the pumping schedule: the first is the conventional hydraulic fracturing which uses continuous pumping schedule and forms a proppant pack inside the fracture. The second is the channel hydraulic fracturing which uses intermittent (pulsing) pumping schedule and forms proppant pillars inside the fracture. The aim of this work is to study the factors affecting the fracture conductivity of the channel fracturing technique. Technical and economical comparison has been conducted between the above-mentioned two types of fracturing using real production data. The Fracturing Computer-Aided Design and Evaluation (FracCADE) simulator was utilized for this purpose. The results indicate that the conductivity of the channel fracturing technique is greater than that of the conventional one. The pulse time and perforated cluster length were found to have a significant effect on the fracture conductivity because of their influence on the pillar spacing. The results indicate also that: the cost of the channel fracturing is greater than that of the conventional one by about 26.28 %. However, the NPV of the produced oil by the channel fracturing is more than the same of the conventional one. In addition, the payout time of the channel fracturing is shorter which means a faster return of investments.
Exploration of the comparison method between nuclear magnetic logging porosity and core detection porosity
Authors: Jiang Gui-pu , Fu Yan , Shen Zhong-shan , Yu Wen , Cao Teng-fei , Du Ying , Liu Min , Lei Yu-ming , Dai Ming-duo , Li Yi-xiao 
Published: October 2023

Abstract
Porosity is the basis of reservoir parameter interpretation, permeability and saturation parameters are closely related to porosity, and the interpretation model of porosity has been established with the correlation between core porosity and electrical properties, and core porosity is the effective porosity measured by applying liquid saturation method. With the application of nuclear magnetic logging technology, the interpretation of porosity is more refined and can be subdivided into total porosity, effective porosity, capillary-bound water porosity, and clay-bound water porosity. In order to apply the nuclear magnetic logging technology more accurately, it is necessary to find a method to compare the two porosity detection methods. In this paper, we discuss the meaning of core porosity through the operation procedure of core detection porosity, combined with core piezometric curve and core density calculation method, get the conclusion that core detection porosity approximates total porosity, explore the comparison method between total porosity and core porosity of nuclear magnetic logging, and lay the geological foundation for the next step of applying nuclear magnetic logging data to improve porosity interpretation.
Seismic Identification and Hydrocarbon Accumulation Characteristics of Submarine Fan in offshore Suriname
Authors: Bian Hai-guang , Wen Zhi-xin , Wang Zhao-ming , He Zheng-jun , Song Cheng-peng , Liu Zuo-dong , Wang Xue-ling , Li Heng-xuan , Ji Tian-yu 
Published: October 2023

Abstract
In recent years, oil and gas fields have been continuously discovered in the Suriname-Guyana Basin of South Atlantic, the reservoir of which is submarine turbidite sandstone and become one of the hot exploration objectives in the world. Based on the interpretation and analysis of 2D seismic and well data, this paper presents the integrated geological and geophysical evaluation of the Suriname-Guyana basin within Suriname and describes the identification characteristics and hydrocarbon accumulation process of submarine fan in offshore Suriname. The tectonic evolution of this region can be divided into four stages, breakup of Pangea, intracontinental rift, regional uplift and drifting over the South Atlantic. The Upper Cretaceous marks the transition of a transgressive to a regressive system with increasing sediment input from the south west, creating a broad delta plain environment across the shallow offshore area. It has been confirmed that multi-stage submarine fans have developed from Upper Cretaceous to Neogene in offshore Suriname, with overlapping characteristics of multiple erosive surfaces. It is suggested that erosive surface forming local unconformity is the important identification mark of submarine fan. Among them, the Paleogene and Upper Cretaceous submarine fans are the most widely distributed and have the most obvious characteristics on seismic profiles. The bottom of the Paleogene and Upper Cretaceous fans are identified by the erosive surfaces. The fan root has obvious characteristics of cutting valley, forming inter-bedded with the deep-sea facies toward the outer fan, along with litho-logic granularity thinning and scope expansion. The distal parts of the submarine fan are surrounded by abyssal shale, which can form a good source, reservoir and cap configuration. Therefore, turbidite fan sandstone with good source rock and cap configuration is the favorable reservoir.
Research on the Fault Diagnosis Method of Reciprocating Compressors Based on the Probability Diagram Model
Authors: Liu Wencai , Wang Xiaofei , Zhang Jinxing , Zheng Huiyong 
Published: October 2023

Abstract
A reciprocating compressor is one of the key pieces of equipment in the petrochemical production industry. Its structure is complex and there are many sources of excitation causing vibration, making the analysis of the causes of failure challenging. Depending upon fault types, the failures in reciprocating compressors can be classified as leakage, wear, fracture, loosening, impact, blockage, etc.; depending upon where the faults occur, the failures can be classified by components affected such as a valve type, a transmission component type, a sealing component type, etc. This paper proposes a parameter self-learning method for diagnosing mechanical faults. With a probability diagram model for the “fault-sign” relationship on the equipment established according to Bayesian networks, the paper proposes a parameter self-learning method in which, based on the failure rate curve, the prior probability is determined subject to the double-parameter Weibull distribution while the conditional probability can be adjusted automatically according to the diagnosis results. After the probability diagram diagnosis model is built, it collects real-time operating data of the equipment, extracts eigenvalues, sets alarm thresholds, and enters into the diagnosis model the comparison results between the eigenvalues and alarm thresholds as the node states in the sign layer. The changes of the node states in the sign layer will change the posterior probabilities of the corresponding nodes in the fault layer so as to deliver the set of diagnosis results with the highest probability of fault occurrence, thus achieving the purpose of diagnosing the equipment fault.
Flow characteristics around the crack in pipeline
Authors: Ali Jafar A , Ahmed Payman S 
Published: October 2023

Abstract
Pipelines transport fluids especially petroleum and its products, the transportation process may face some problems due to the defects that can occur in the pipes. Cracks are the main defects that attack the pipes and reduce their performance. It is known that the flow around cracks in pipelines are complicated and affected by various factors, it worth to be considered before decision making on the pipeline integrity. In this study flow characteristics around the crack inside the pipeline has been investigated. The part of the pipe within the crack is the crack zone, where the flow behaviour is different with the rest of the pipe. The work carried out at the laboratory using pipes with different crack length and crude oil with known properties to observe the flow at the crack zone. Then the work theoretically analysed with computational fluid dynamics to model the flow. It is found that the fluid at the crack zone is going to be more viscous lead to accumulation and changes in the characteristics of the flow. The results revealed that the flow characteristics in cracked pipeline with no leakage depend on several factors; the size of the crack, temperature, pressure, velocity and fluid viscosity.
Analysis of Well Performance Based on Bottom Hole Pressure Calculations for Gas Lift Application
Authors: Mohamed Nader , Abdallah Elhassan Mostafa. , Almahdawi Faleh H. , Mukhtar Yasir M. F. 
Published: October 2023

Abstract
This paper focuses on optimizing gas lift techniques in four wells located in the North Sea to overcome the common issue of low reservoir pressure. Gas lift is a common artificial lift technique used in wells with low reservoir pressure where the natural pressure of the reservoir is insufficient to bring the oil to the surface. The success of gas lift optimization depends on identifying the deepest injection point, gas injection rate, and pressure of the gas injected. The paper proposes the deepest injection points for wells A-03, A-09A, A-10T2, and A-12BT2 as 3809.38 ft, 6649.7 ft, 3559.88 ft, and 3979.04 ft, respectively. The injection rates analyzed in this paper range from 1-10 mmscf/day, and injection pressures of 500 psia, 1000 psia, and 1500 psia were used. The response of each well to gas lift was analyzed, and increasing injection rate and pressure were found to increase oil production rate. The optimal gas injection rate and pressure for wells A-03, A-09A, and A-12BT2 were found to be 10 mmscf/day and 1500 psia, while for well A-12BT2, the best oil recovery was obtained at an injection rate of 3 mmcsf/day and injection pressure of 1500 psia. Tubing size within the range of 1-5.5 inch was examined, and it was found that increasing tubing size enhances oil flow rate. The optimal tubing size for the wells was found to be 5.5 inch, taking into consideration factors such as flow rate, pressure, temperature requirements, and fluid type.
Research and Application of HSE Control System for High Consequence Area Water Injection Pipeline
Authors: Qi Shen , Wang Xue-mei , Zhou Peng , Ji Jia-xiu , Zhao Li-juan , Deng Wen-bin 
Published: October 2023

Abstract
In view of the fact that the safety management technology prevention and control capabilities are weak in the safety management technology such as long operating life, high pipeline operating pressure, large control area, difficulty in detecting abnormal phenomena, slow valve opening and closing speed, and difficulty in quickly handling emergencies in oilfields, the HSE control system of water injection pipelines in high consequence areas is developed and designed with the help of technical means such as Internet of Things and edge gateway computing, which realizes real-time monitoring of water injection pipeline pressure in high consequence areas, remote control of shut-off valves, timely elimination of hidden dangers, and timely control of dangerous situations. Purpose of expeditious disposal. This research project was tested in the field of a branch of a water injection line in a typical high-consequence area. The verification results show that the system has the functions of real-time monitoring of water injection pressure and remote control of shut-off valve, which is of great significance for improving the HSE technical defense system of oilfield and improving the ability of oilfield to deal with emergencies.
Dynamics Analysis of Droplets Collision with the Wall Driven by Buoyancy
Authors: Rong Feng , He Li-min , Lü Yu-ling , Wang Ce , Han Yi-shuo 
Published: October 2023

Abstract
Dynamics analysis of the oil droplet in water impacting on a rigid wall in the range of Re=9.3 ∼ 231.39, We=0.003 ∼ 0.637 was carried out by combining microscopic experiment with theoretical study. In the oil droplet’s force equation, we consider the added mass force and the water film induced force, in addition to the conventional forces, i.e. buoyancy and resistance to flow. Stokes-Reynolds drainage equation (i.e. SR model) and Young-Laplace equation (i.e. YL model) are combined with the force equation to numerically solve the motion law of oil droplets near the wall for different control parameters. The study indicates that coupled model would expect oil droplet velocities, motion trajectories and capture the kinetic behaviors of the water-film drainage evolution. The interfacial deformation of oil droplets causes changes in the pressure and the pressure distribution pattern has an important relationship with the shape of the oil droplet interface. These two forces play a dominant role in droplet motion during the collision and the maximum value of these two forces increases with increasing droplet size and Re number. Future research should shift towards complex oil-water systems and consider the effects of chemicals on oil droplets so that the application of the model will be more generalisable. At the same time, computer technology should be used to transfer the two-dimensional view to a three-dimensional view to analyse the deformation of the oil-water interface and to better understand the drainage process of the water film.
Uniform Acid Cleaning Technology and Its Application in Horizontal Wells with Open Hole Screen Tube
Authors: Jia Peifeng , Cui Chuanzhi , Sui Yingfei , Ren Jiamin , Lv Chao 
Published: October 2023

Abstract
After the completion of the open hole sieve tube in a horizontal well, it is necessary to replace the slurry and put it into production. Generally, circulating acid outside the tube cannot fully remove mud pollution. The acidification process needs to fully consider the heel effect of horizontal wells. Based on the horizontal pipe flow model and the characteristics of foam diversion, a mathematical model of acid washing suitable for open hole screen horizontal wells is established. Analysis suggests that lower flow rates and higher fluid viscosity during the acid washing process are more conducive to the uniform entry of the plugging solution into the formation. We have designed a uniform liquid mixing equipment with a flow blocking mechanism, and improved the acid washing construction process to achieve negative pressure reverse discharge of acid solution. This process can achieve uniform entry of the unblocking fluid into the formation after passing through the screen gap, and remove the blockage of the mud layer inside and outside the near screen tube. The horizontal wells using this process have a 30% increase in production capacity compared to oil wells in the same block, and the high yield validity period has been extended by 680 days.
An S-band MMIC LNA in GaAs 0.15-μm pHEMT
Authors: Liang Ruirui , He Wenlong 
Published: October 2023

Abstract
The study adopts a monolithic microwave integrated circuit (MMIC) low-noise amplifier (LNA) applied in S-band was designed using ADS simulation software, GaAs 0.15-um pseudomorphic high electron mobility transistor (pHEMT) process. The LNA small signal gain is greater than 30.8 dB, gain flatness is ±0.45 dB, noise coefficient is less than 1.5 dB, input and output return loss is greater than 10 dB, and the chip area is 1.2*2.4 mm2. The low noise amplifier is composed of a two-stage cascade structure. Gain flatness, gain control, and bandwidth broadening are improved by RLC negative feedback network. The minimum noise coefficient circle and maximum gain circle are narrowed by adding negative feedback to achieve better noise coefficient and gain.
Security label and attribute-based access control in service-oriented environments
Authors: Cao Jingyi , Yin Liang , Li Menglin , Zhu Yayun , Zhang Hongjie , Zhang Xiaojuan , Lin Ziqing , Hu Baiji , Yao Shuang , Peng Jianing 
Published: October 2023

Abstract
Compared with traditional systems, service-oriented environments are more dynamic and distributed. Although traditional access control is able to fulfill the security of requirements of closed systems on the whole, it can no longer meet the requirements of service-oriented environments. To deal with the issues that access control in the service-oriented environment needs to cross the boundary of the security domain, the high distribution, and heterogeneity of environmental characteristics, and how to establish efficient and guaranteed access to resources, access control based on security label and attribute is proposed for fine-grained resource information and rich policy security requirements. By using a CP-ABE mechanism, distributed fine-grained access control can be realized in the company of solving the issue of policy privacy leakage; By using the security label technology, the multi-level security mandatory access control is realized, and the security flow of information is achieved, thus protecting the service and its methods from unauthorized users. Finally, the proposed scheme has been verified to have reliable security through security analysis. The experimental outcomes indicate this proposed scheme is available and effective in terms of performance.
A Novel Power System Side Channel Attack Method Based on Machine Learning CNN-Transformer
Authors: Zhang Xiaojuan , Zhu Yayun , Hu Baiji , Cao Jingyi , Lin Ziqing 
Published: October 2023

Abstract
Continuous advancements in cryptography and information technology have rendered current cryptographic algorithms highly robust against traditional cryptanalysis methods. However, in modern power systems, the equipment’s inherent process characteristics result in the leakage of side channel information during the operation of cryptographic algorithms. This information includes power consumption, electromagnetic signals, and timing data. Adversaries can exploit these side channels to compromise encryption keys. To address this issue, a groundbreaking power system side-channel attack method is introduced in this paper, leveraging the CNN-Transformer architecture in machine learning. The proposed approach utilizes power consumption analysis techniques to identify relevant points of interest in the side channel power consumption data. By employing a machine learning model for training, encryption can be breached. Empirical results demonstrate the superior attack efficiency of the model compared to LSTM and CNN models in side channel attacks.
Temporal Role Access Control Model for New Power Systems Based on Trust Degree
Authors: Wu Kehe , Han Yang , Tian Zheng , Wu Weidong , Sun Yizhen 
Published: October 2023

Abstract
With the continuous development of information construction in the new power system and the power information network system, users have their own role identities in the corresponding business systems, and access permissions change over time. Traditional access control permanently assigns user roles, which has made the issue of power information security increasingly prominent. This article introduces time constraints in the role-based access control of the new power system. Building on the research of GTRBAC, a trust-based time-constrained role-based access control model for the new power system is proposed. The model’s semantics, execution model, and formal verification are defined.
Recording channel design for time-based measurements in 28 nm CMOS
Authors: Kadlubowski L.A. , Kmon P. 
Published: October 2023

Abstract
In this paper we present a recording stage dedicated to
time-based measurements required in imaging detectors. The prototype
ASIC is manufactured in the 28 nm CMOS process and consists of a
8 × 4-pixel matrix of 50 μm pitch. Each pixel includes
a recording stage that processes input signals for the digital
circuitry, responsible for performing time-based measurements such
as Time-over-Threshold and Time-of-Arrival. The digital part of the
pixel is made up of two ring-based oscillators, configuration
registers, and counters. The recording channel occupies only
12 × 50 μm while consuming 4.5 μA current. The
in-pixel coarse and fine correction methods implemented allowed an
improvement of gain and offset uniformity 3.3 and 10 times,
respectively.