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Thermal characteristics of novel convection-radiation coupling terminal based on energy cascade utilization for intermittent heating

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JOURNAL OF BUILDING ENGINEERING 2025年 103卷

作者： Yuan, Jianjuan Ma, Zhiyu Kong, Xiangfei Fan, Man Han, Zhao Hebei Univ Technol Sch Energy & Environm Engn Tianjin 300401 Peoples R China Gong da Keya Tianjin Energy Technol Co LTD Tianjin Peoples R China

With the increasing energy consumption of heating, intermittent heating is widely used as an energy-saving heating method. Unfortunately, radiator, fan coil and radiant panel are the main heating terminals, which can't fully meet the requirements of rapid response and high thermal inertia and indoor thermal comfort for intermittent heating. In this paper, based on the ideal of energy cascade utilization, by combining the radiator, evaporation side of heat pump (the heat pump is connected with the indoor fan coil through a pipeline) and wall radiant panel in series, the novel convection-radiation coupling terminal is proposed. The results of different heating combination models show that the heating model coupled with radiator, fan coil and wall radiant panel (RH + FH + WH) has the better thermal response rate, which is 7.4 times that of the slowest wall radiant panel heating model (WH), and the thermal inertia of RH + FH + WH is also better. In addition, the EER of RH + FH + WH is 30.64% higher than that of fan coil heating model (FH). For the indoor thermal comfort, RH + FH + WH can reduce the horizontal temperature difference of FH from 0.94 degrees C to 0.62 degrees C, the indoor air temperature is 99 % in the acceptable comfort temperature range. In addition, the water supply temperature of RH + FH + WH suggested in this paper is about 20.4% lower than that of WH and radiator heating model (RH). In conclusion, for intermittent heating, novel convection-radiation coupling terminal can not only provide faster thermal response rate, but also ensure better indoor thermal comfort, and has better energy saving performance.

关键词： Intermittent heating Convection-radiation coupling heating terminal Indoor thermal comfort Thermal response rate Energy utilization

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Development of stress concentration factor curves for round sleeve terminal cavity with different r/d ratios in automotive application

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PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING 2025年

作者： Kulkarni, Gourav Vivek Sharma, Ramesh S. RV Coll Engn Dept Mech Engn Mysuru Rd Bengaluru 560059 Karnataka India

Automotive connectors used in safety and infotainment systems employ round sleeve terminals for connectivity. In polarization insertion test, the plastic cavity is subjected to stress concentration at the sharp edges, avoided by introducing edge blends. The test per automotive specifications requires for round sleeve terminals to be restricted from entering the cavity during assembly below a specified force. This condition was not being met and certain mechanical failures were observed at the cavity edges. Why-Why analysis revealed the most likely root cause for this failure as stress concentration at the sharp corners. To overcome this, two re-design ideas were considered. The double edge blend and single edge blend features were thus taken up for the stress concentration study but the same was scarcely reported in literature and thus the development of Stress Concentration Factor curves was identified as the gap. The model was meshed with adaptive refinement near the edge blends in Ansys 2024 R1. The maximum stress was noted down and parametric simulation was run for r/d ratio ranging from 0.01 to 0.25 with steps of 0.01 for D/d of 1.3, 1.2 and 1.15 and chamfer angles of 30 degrees, 45 degrees and 60 degrees. The data was used to consolidate the Stress Concentration factor values and the consolidated curves were developed subsequently. Second order polynomial regression equations and logarithmic best fit curve equations along with respective acceptable correlation coefficients were summarized. 3D surface plots for interaction of parameters were obtained. A comparison of maximum stress values derived from the best fit curves and finite element analysis for various combinations showed a good agreement with a maximum deviation of 6.6%, thereby indicating Stress Concentration Factor (Kr) curves generated in the study can be faithfully used for similar configurations.

关键词： Stress concentration terminal cavity connector polarization

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Familial inheritance of 14q terminal deletion syndrome and review of the literature

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EUROPEAN JOURNAL OF MEDICAL GENETICS 2025年 75卷 105015-105015页

作者： Vincent, Krista M. Prince, Bradley McGowan-Jordan, Jean Carter, Melissa T. CHEO Reg Genet Program Ottawa ON Canada Univ Calgary Cumming Sch Med Dept Med Genet Calgary AB Canada Univ Ottawa Dept Pathol & Lab Med Ottawa ON Canada

terminal deletions of chromosome 14q are characterized by a spectrum of phenotypes that can include microcephaly, growth deficiency, intellectual disability, characteristic facial features, and various congenital anomalies. The rarity of this syndrome, together with the broad spectrum of phenotypes, has made genotypephenotype correlations difficult. Herein, we describe a family with the core features of the condition and a heterozygous 3.7 Mb deletion at 14q32.32qter. To our knowledge, this is the first case of vertical transmission of a terminal 14q deletion. In addition to this family, we review 19 previously reported individuals. Additional descriptions of individuals with terminal 14q deletions will help to fully characterize the phenotypic spectrum and define the natural history of this condition.

关键词： terminal Deletion 14q

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Checkpoint: A Tool for Supporting terminal-Based Capture-the-Flag Assessments 56

Checkpoint: A Tool for Supporting Terminal-Based Capture-the...

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56th Annual SIGCSE Technical Symposium on Computer Science Education, SIGCSE TS 2025

作者： Bernard, Connor Robert Fabros, Melissa Li, Zhifei Norouzi, Narges Garcia, Daniel Fox, Armando University of California Berkeley Berkeley CA United States Renmin University of China Beijing China

ISBN: (纸本)9798400705328

Checkpoint is a responsive, terminal-based assignment system designed to support faculty in teaching and assessing a broad scope of computer science topics with Capture-the-Flag (CTF) style challenges. Unlike existing CTF frameworks, where binary completion of a given task is the only metric for evaluation, Checkpoint enables students to receive partial credit and dynamic feedback as they complete tasks. Not only does this allow students to confirm they are on the right track, but it simultaneously provides detailed analytics to instructors about each student's progress as they complete the assignment. Presented by an in-browser terminal emulator neatly wrapped in a Docker image, Checkpoint is a versatile tool that can be implemented in a variety of Learning Management Systems (LMSs) with minimal effort. Instructors can easily define flags in a user-friendly configuration file with flag names mapped to optional feedback and regex patterns, which automatically mark flags as complete and render feedback to students within their terminal environment. © 2025 Copyright held by the owner/author(s).

关键词： assessment ctf hands-on learning mastery learning software terminal

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Driver anomaly detection in cargo terminal

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Heliyon 2025年第2期11卷 e41567页

作者： Emaani, Shahab Saghaei, Abbas Master's degree Department of Industrial Engineering Technical and Engineering Faculty Research Science Unit Islamic Azad University Tehran Iran Department of Industrial Engineering Technical and Engineering Faculty Research Science Unit Islamic Azad University Tehran Iran

The Iranian road transportation sector, comprising about 500,000 owner-operator drivers, faces rising syndication challenges, leading to disruptions and driver refusals in some provinces. Drivers highlight the urgent need for load distribution improvements within terminals. This study investigates anomaly detection by drivers in cargo terminals, starting with the evaluation of driver assumptions through K-means clustering. The study confirms drivers' assertions regarding those who handle more cargo in less waiting time. Subsequently, Isolation Forest, KNN, and HBOS algorithms are applied to detect abnormal behavior using data mining techniques. Results reveal three distinct driver groups, with a notable proportion (98 %) of anomalies concentrated in one group. This study sheds light on the critical syndication issue of anomaly detection in cargo terminals by drivers, offering valuable insights for researchers and shipping practitioners. Moreover, limited research on theft prevention renders conventional methods ineffective, highlighting the overlooked use of clustering in prior literature reviews focused on case study analysis. © 2025 The Authors

关键词： Anomaly detection Cargo Fraud detection Machine learning terminal

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terminal-selective C（sp3）–H borylation of unbranched alkanes enabled by intermolecular radical sampling and LMCT photocatalysis

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National Science Review 2024年第5期11卷 96-98页

作者： Zhexuan Lei Jie Wu Department of Chemistry National University of Singapore

The selective functionalization of C（sp3）–H bonds with subtle differences in alkanes is highly sought after due to its atom-and step-efficiency. The activation of C（sp3）–H bonds through hydrogen atom transfer （... 详细信息

关键词： terminal enabled lmct alkanes borylation intermolecular photocatalysis radical sampling selective

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terminal sliding mode control of rail pressure for gasoline direct injection engines

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Control Theory and Technology 2019年第2期17卷 183-189页

作者： Chen ZHANG Ying ZHANG Cong CHAI Miaolei ZHOU Department of Control Science and Engineering Jilin UniversityChangchun Jilin 130022China

The desired fuel rail pressure is a crucial factor for guaranteeing the gasoli ne direct injecti on(GDI)en gine to work *** order to solve the rail pressure control problem,the detailed no nlinear model of GDI is derived and reas on able simplification of this model is carried out for the following controller *** sliding mode control strategy is proposed to design the rail pressure controller with Lyapunov *** designed approach with the fast terminal sliding mode surface makes the system have the capacity of global fast con vergence and achieves precise tracking *** demonstrate the validity of the desig ned control method,simulations are conducted by tracking the different reference rail *** show that the designed controller tracks the given reference accurately and has strong robustness.

关键词： Rail pressure control terminal sliding mode control GDI system

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terminal observer and disturbance observer for the class of fractional-order chaotic systems

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SOFT COMPUTING 2020年第12期24卷 8881-8898页

作者： Soltanpour, Mohammad Reza Shirkavand, Mehrdad Shahid Sattari Aeronaut Univ Sci & Technol Dept Elect Engn POB ***Shamshiri St Tehran Iran

In this paper, a terminal fractional-order observer and a terminal disturbance observer is proposed to estimate internal states and external disturbances of the class of fractional-order chaotic systems. The estimation of states within fixed time is achieved by employing a nonlinear feedback in terms of the observer error. The fixed convergence time is not relevant to the initial conditions and can be adjusted to any desired values by tuning the designable parameters. Finally, the numerical simulations are performed on fractional-order chaotic Liu, Chen, and Financial systems to validate the theoretical results. Moreover, some numerical simulations are provided to compare the obtained theoretical results with the other methods in the literature.

关键词： Fractional order Chaos terminal Finite time Fixed time Observer Disturbance observer Liu Financial Chen Arnodo-Coullet Modified Jerk Lu

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EMPC of aluminium wire and copper terminal for electric vehicles

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MATERIALS AND MANUFACTURING PROCESSES 2023年第3期38卷 306-313页

作者： Li, Chengxiang Shen, Ting Zhou, Yan Dai, Ming Chongqing Univ Sch Elect Engn State Key Lab Power Transmiss Equipment Syst Secu Chongqing Peoples R China

Electric vehicle is one of the important development directions of the automotive industry, with a broad prospect. The high-voltage wire harness plays a key role in the power system for electric vehicle. Aluminum wire harness was proposed to be crimped with the copper terminal instead of the copper wire harness, which can decrease the weight and the cost. This work proposes an electromagnetic pulse crimping technology to connect the aluminum wire harness and copper terminal of electric vehicle. A 28 kJ electromagnetic pulse crimping system for crimping aluminum wire harness and copper terminal was established and the reliable joints were obtained and tested. The microstructure analysis results show that the connection interface has a corrugated morphology, and there was no obvious effect on the plating during the high-speed collision. The energy dispersive spectroscopy analysis results show that there was metal element diffusion in the connection interface. The testing results show that the joints with good electrical performance can be obtained, which can promote the realization of the aluminum wire harness instead of the copper wire harness. This work can provide technical reference and theoretical support for the development of high-voltage wire harnesses for electric vehicle.

关键词： Electric vehicle electromagnetic pulse crimping aluminum copper wire harness terminal microstructure plating

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terminal CONTINUA AND QUASI-MONOTONE MAPPINGS

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TOPOLOGY AND ITS APPLICATIONS 1992年第1期47卷 69-77页

作者： CHARATONIK, JJ UNIV WROCLAW INST MATHPL-50384 WROCLAWPOLAND

It is shown that if a continuous surjection between continua is quasi-monotone, then the image of a terminal (of an end) subcontinuum of the domain either is a terminal (an end) subcontinuum of the range or equals the... 详细信息

关键词： CONTINUUM END IRREDUCIBLE MAPPING QUASI-MONOTONE terminal

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