Tight computationally efficient approximation of matrix norms with applications by Juditsky, Anatoli, Kotsalis, Georgios, Nemirovski, Arkadi

“…We specify rather general families of norms on the argument and the images space (“ellitopic” and “co-ellitopic”, respectively) allowing for reasonably tight computationally efficient upper-bounding of the associated operator norms. …”
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Study on the effect of space tightness on the inerting effect of liquid CO2 in pottery jar liquor warehouses by Xueming Li, Wei Wan, Gang Bai, Youkai Zhao, Xunxian Shi, Jinsong Zhu

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Occupational mismatch in the labour market of selected EU countries by Alka Obadić, Viktor Viljevac

“…Methodology: Methodologically, the study uses Beveridge curves, labour market tightness, and matching efficiency estimates to measure the matching needs of employers and unemployed job seekers within various occupation groups. …”
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Quantitative Characterization of Surfactant Displacement Efficiency by NMR—Take the Tight Oil of Chang 8 Member of Yanchang Formation in Fuxian Area, Ordos Basin, as an Example by Hu Yin, Gaorun Zhong, Jiangbin Liu, Yanjun Wu

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Effect of microscopic pore–throat structure heterogeneity on waterflooding seepage characteristics of tight sandstone reservoirs by Zhang Quanpei, Yang Chen, Tian Yu, Liu Hui, Xiao Wen, Wang Zhikun, Mi Zhongrong, Li Zheyu, Huo Yong, Li Yong, Min Jie, Zhang Duoduo, Chen Linzi, Duan Qiong

“…Based on these findings, high-temperature and high-pressure waterflooding experiments were performed to explore dynamic waterflooding behavior and systematic factors influencing fluid mobility and waterflooding efficiency (E w). …”
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Characterization of the Dynamic Imbibition Displacement Mechanism in Tight Sandstone Reservoirs Using the NMR Technique by Liangbin Dou, Min Yang, Hui Gao, Dongxing Jiang, Chenglu Liu

“…Moreover, the displacement efficiency of dynamic imbibition is compared with that of static imbibition. …”
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A new dynamic model of supply boundary at low pressure in tight gas reservoir by Jinbu Li, Lili Liu, Yuan Zhu, Lian Zhao, Xiaolong Chai, Leng Tian

“…At present, there are few studies on the dynamic supply boundary considering the threshold pressure gradient, reservoir and fracture stress sensitivity and slip effect for the gas-water two-phase model of tight gas reservoirs. …”
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Evaluation of Proppant Placement Efficiency in Linearly Tapering Fractures by Xiaofeng Sun, Liang Tao, Jinxin Bao, Jingyu Qu, Haonan Yang, Shangkong Yao

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Gas-water relative permeability characteristics and production dynamic response of low pressure and high water cut tight gas reservoirs by GUO Zhidong, KANG Yili, WANG Yubin, GU Linjiao, YOU Lijun, CHEN Mingjun, YAN Maoling

“…Clarifying the relationship between the gas-water relative permeability behavior of tight sandstone and the production performance of gas wells is conducive to the efficient development of tight gas reservoirs. …”
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Digital economy and carbon efficiency: the roles of population aging and human capital by Rongrong Li, Qiang Wang, Ting Yang

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Interrelationship Between Indexes of the Population Medical Care Quality and Macroeconomic Efficiency by Nataliia Sheliemina

“…In the given article, the author deeply examines the tight relationship between population medical care quality and macroeconomic efficiency. …”
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Dynamic and static integrated classification model of gas well based on XGBoost algorithm—an example from block S of Sulige tight sandstone gas field by Shuangshuang Zhang, Shuangshuang Zhang, Xiangdong Yu, Xiuli Gao, Donglin Li, Shijun Huang

“…The original classification standard of gas wells in the Sulige gas field has weak regularity of each parameter, large overlapping range of classification results, serious discrepancy between the dynamic and static, and low efficiency of manual classification. …”
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The impact of top management team tenure heterogeneity on innovation efficiency of declining firms. by Xunjiang Huang, Qilin Gao, Deng Wang

“…Under the dilemma of resources reduction and recovery, the declining firm pays more attention to the efficient utilization of the diminishing innovation resources. …”
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Low-input CUT&Tag for efficient epigenomic profiling of zebrafish stage I oocytes by Qianwen Zheng, Xiaotong Wu, Xin Li, Xianming Mo, Bo Xiang, Jing Chen

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Development of a highly efficient p-coumaric acid-responsive biosensor in Saccharomyces cerevisiae by Xueqing Pang, Jingyuan Zhu, Yuqing Li, Jing Xiao, Xinyu Zhang, Depeng Ren, Pingping Zhou

“…Notably, the PBS1-CCW12 hybrid promoter exhibited tight regulation by BsPadR and enhanced activity in response to p-coumaric acid. …”
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Microscopic seepage process of gas and water in fractures of tight reservoirs by Shiwei HOU, Xunqing LÜ, Suyun MENG, Hao ZHANG, Xiuli DU

“…To investigate the dynamic seepage mechanisms of fluids within fractures of tight reservoirs, a three-dimensional digital core fracture structure of an actual reservoir was constructed based on deep learning segmentation results. …”
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Tightly Coupling Fusion of UWB Ranging and IMU Pedestrian Dead Reckoning for Indoor Localization by Rashid Ali, Ran Liu, Anand Nayyar, Basit Qureshi, Zhiqiang Cao

“…Ultra-wideband (UWB) and inertial measurement unit (IMU) fusion is an efficient method to resolve the uncertainties of UWB in non-line-of-sight (NLOS) situations because of signals refraction, the effect of multipath and inertial positioning error accumulation in indoor environments. …”
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Comprehensive Evaluation of Waterflooding Performance with Induced Fractures in Tight Reservoir: A Field Case by Naichao Feng, Yuwen Chang, Zuoqian Wang, Tao Liang, Xiaofei Guo, Yimeng Zhu, Limin Hu, Yang Wang

“…Whether intentionally or unintentionally, waterflooding always takes place under fracturing condition in tight reservoir because of the extremely limited water absorption ability of the formation. …”
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Identification Method of Gas Migration Channels for CO2 Drive in Tight Oil Reservoirs by LU Xiaoxiao, AN Jixing, ZHU Lin, WANG Shaoqing, LI Pengfei, PAN Weizhi, LIN Yujing

“…This results in suboptimal planar sweep efficiency and subsequently impacts the oil displacement effect. …”
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Mechanisms of Proppant Transport in Rough Fractures of Offshore Unconventional Reservoirs: Shale and Tight Sandstone by Biao Yin, Yishan Lou, Shanyong Liu, Peng Xu

“…Compared to the smooth model, fluctuations in JRC_28 (tight sandstone) drastically increase turbulent kinetic energy within the fracture, altering particle transport dynamics. …”
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