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当代学界

已有 971 次阅读 2024-6-16 04:24 |个人分类:微波吸收|系统分类:科研笔记

1 科研

教学水平持续滑坡,发表文章档次越来越高。

Structural engineering on carbon materials for microwave absorption: From micro to macro to meta

Sichuan University, Chengdu

Carbon Volume 224, 25 April 2024, 119058

Received 10 January 2024, Revised 15 March 2024, Accepted 18 March 2024, Available online 21 March 2024, Version of Record 3 April 2024.

https://doi.org/10.1016/j.carbon.2024.119058

Metal-organic-frameworks derived hollow carbon derivatives: Controllable configurations and 

optimized microwave absorption

Northwestern Polytechnical University, Xi'an,

Carbon Volume 219, 10 February 2024, 118853

Received 29 December 2023, Revised 21 January 2024, Accepted 22 January 2024, Available online 23 January 2024, Version of Record 26 January 2024.

https://doi.org/10.1016/j.carbon.2024.118853

Facile design and enhanced interface polarization of CoFe-PBA/MXene towards microwave absorption, EMI shielding and energy storage

Beijing Institute of Technology, Beijing

Carbon Volume 226, June 2024, 119239

Received 25 March 2024, Revised 9 May 2024, Accepted 11 May 2024, Available online 13 May 2024, Version of Record 16 May 2024.

https://doi.org/10.1016/j.carbon.2024.119239

In-situ construction of phase-separated interconnected PVA@RGO frameworks 

using dual-crosslinking/reduction steps for broadband microwave absorption and enhanced structural performance of aramid honeycombs

Sichuan University

Carbon Available online 15 June 2024, 119360

Received 22 April 2024, Revised 31 May 2024, Accepted 15 June 2024, Available online 15 June 2024.

https://doi.org/10.1016/j.carbon.2024.119360

Hierarchical porous biomass-derived carbon with rich nitrogen doping for high-performance 

microwave absorption and tensile strain sensing

Northeast Normal University, Changchun, China

Yiman Lu, Xiaoning Zhao, Qiaoling Tian, Ya Lin, Peng Li, Ye Tao, Zhongqiang Wang, Jiangang Ma, Haiyang Xu, Yichun Liu

Received 20 January 2024, Revised 20 March 2024, Accepted 25 March 2024, Available online 26 March 2024, Version of Record 27 March 2024.

https://www.sciencedirect.com/science/article/abs/pii/S0008622324003026

Facile preparation and broadband microwave absorption of multilayered materials based on thin films of reduced graphene oxide

East China University of Science and Technology

Carbon  Volume 224, 25 April 2024, 119093

Received 15 January 2024, Revised 18 March 2024, Accepted 31 March 2024, Available online 1 April 2024, Version of Record 4 April 2024.

https://doi.org/10.1016/j.carbon.2024.119093

The tune of shell numbers of multi-shell hollow mesoporous carbon microspheres 

for enhanced microwave absorption

Shaanxi University of Science and Technology, Xi'an

Carbon Volume 227, 30 June 2024, 119267

Received 23 March 2024, Revised 9 May 2024, Accepted 19 May 2024, Available online 21 May 2024, Version of Record 24 May 2024.

https://doi.org/10.1016/j.carbon.2024.119267

Facile synthesis of vaterite CaCO3 microspheres from carbon capture and solid waste utilization 

towards microwave absorption and dye wastewater adsorption

Minzu University of China, Beijing

Carbon Volume 226, June 2024, 119199

Received 6 February 2024, Revised 11 April 2024, Accepted 27 April 2024, Available online 27 April 2024, Version of Record 30 April 2024.

https://doi.org/10.1016/j.carbon.2024.119199

Transformation of traditional carbon fibers from microwaves reflection to efficient absorption via carbon fiber microstructure modulation

Wuhan University of Technology, Wuhan

Carbon Volume 219, 10 February 2024, 118802

Received 29 August 2023, Revised 30 December 2023, Accepted 6 January 2024, Available online 8 January 2024, Version of Record 12 January 2024.

https://doi.org/10.1016/j.carbon.2024.118802

Confined pyrolysis-driven one-dimensional carbon structure evolution from polyacrylonitrile fiber 

and its microwave absorption performance

Harbin Institute of Technology

Carbon Volume 218, 31 January 2024, 118751

https://doi.org/10.1016/j.carbon.2023.118751

Fabrication of multiple core-shell structures MnO@HsGDY@NC@HsGDY hybrid nanofibers 

for enhanced microwave absorption

Northwestern Polytechnical University

Carbon Volume 216, 5 January 2024, 118588

https://doi.org/10.1016/j.carbon.2023.118588

One-step in-situ preparation of C/TiO2@rGO aerogel derived from Ti3C2Tx MXene 

for integrating microwave absorption, electromagnetic interference shielding and catalytic degradation of antibiotics

University of Chemical Technology, Beijing

Carbon Volume 217, 25 January 2024, 118610

https://doi.org/10.1016/j.carbon.2023.118610

Dielectric gene engineering on biochar for ultrawide-band microwave absorption with a rational double-layer design

Sichuan University

Carbon Available online 10 June 2024, 119326

https://doi.org/10.1016/j.carbon.2024.119326

Reinforcement of microwave absorption and thermal conductivity of polydimethylsiloxane achieved by metal-organic framework-derived carbon nanotube/boron nitride flake heterogeneous structure

Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou

Carbon Volume 227, 30 June 2024, 119242

https://doi.org/10.1016/j.carbon.2024.119242

Size regulated N-doped carbon encapsulated NiFe alloys/Ni phosphide composites derived from 

bimetallic Prussian blue analogues for effective microwave absorption

Wuhan University of Science and Technology

Carbon Volume 218, 31 January 2024, 118668

https://doi.org/10.1016/j.carbon.2023.118668

Defect-steering the prominent thermal conduction, microwave absorption, and electrical insulation of porous g-C3N4 nanofibers

Zhejiang Normal University

Carbon Volume 219, 10 February 2024, 118849

https://doi.org/10.1016/j.carbon.2024.118849

Macro-ordered porous carbon nanocomposites for efficient microwave absorption

Zhejiang University

Carbon Volume 218, 31 January 2024, 118614

https://doi.org/10.1016/j.carbon.2023.118614

Reduced graphene oxide/nonwoven fabric filled honeycomb composite structure 

for broadband microwave absorption

Xi'an Jiaotong University

Carbon Volume 223, 10 April 2024, 119005

https://doi.org/10.1016/j.carbon.2024.119005

--------------

科研专家,往往发表过很多高档文章,他们看不起教学研究

Peer Review Antagonist - Peeref

The quality of the writing is very poor, barely at the level of a student term paper at a decent university. The authors must learn to write in Standard English of an appropriate academic quality, also paying attention to overall structure, flow, and clarity of expression. ...There is no sense conveyed to the reader that there has been a clear advance over the state of the art (that something not possible using any existing method has been accomplished using the authors' work). In fact, the authors merely use a textbook model in their work, which means that their work is at best at the level of a student project.

只有人类最优秀的成就才有资格进入教室。

如果说一项研究有资格进入教室,那么是对这项研究的最高褒奖

相反

如果一个研究者连教材的内容都没有搞懂,

却在顶刊发表了文章,

那么这种文章不是错误文章就是垃圾文章,

这种文章不会有深度

根本没有花精力阅读的价值。

人类历史上有价值的贡献都是那些有坚实理论基础的人做出来的。

https://www.zhihu.com/question/28692518/answer/3389839556

为什么很多科研很厉害的老师却不擅长教课?

https://www.zhihu.com/question/629479594/answer/3361023597

微波吸收材料领域困惑?

https://doi.org/10.32388/4PN4RT

-----------------------

教材和期刊文献,前者更值得下大功夫研读

实验的目的是取得理论认知

期刊同行评审:发现稿件错误很低效,不让颠覆性创新正确稿件发表效率很高 

https://zhuanlan.zhihu.com/p/703093457

https://zhuanlan.zhihu.com/p/701523122

https://zhuanlan.zhihu.com/p/701498908

是理论使这个世界变得简单了、更容易把握了

为什么现代微波吸收理论错了

2 教育是决定学术界水平最重要的因素

很多学生毕业总成绩分数很高,但是并没有下很大功夫学习,没学懂什么。

他们中相当一部分能考上研究生。

研究生都要有SCI高档次论文才能毕业,

他们中很少有不能毕业的,意味着海量SCI文章被发表。

垃圾文章的大量产出导致的问题不仅仅是虚假繁荣 

https://www.pnas.org/doi/full/10.1073/pnas.2021636118

https://www.pnas.org/doi/full/10.1073/pnas.2021636118?doi=10.1073%2Fpnas.2021636118

Slowed canonical progress in large fields of scienc

3 高考选拔

现在正在高考评卷。

出考卷的专家是现代滑坡教育培养出来的。

考卷中反映的问题:

能衡量水平的考题,只要求一个最终数字填空,没有中间步骤分可以给,

不能衡量水平的考题却有中间步骤分数。

评卷的人也是当今滑坡教育培养出来的。

评分过程的质量也决定高考选拔的质量。

是不是真的高水平的学生被高考选拔了出来也成为问题。

-----

学校的研究生专业考题,通常是学校有权威的教授出的。

然而

一所学校的研究生的专业试卷的考题,连续几年一塌糊度、答案充满错误(这些考题和答案,后届考生花钱是可以内部买到的),直到最后被一位老师纠正。

任何考题和评分标准,都会产出高分考生,然后分数遮盖百丑,产生似乎合理的录取。

我们有严格的监督和教学检查机制,但是这些机制如同期刊同行评审,面对真正的问题全都无能为力。

教育的关键是有高水平的教师;

科研的关键,是有理论基础扎实真正做学问的研究人员;

然而现今除了无用的严格游戏规则、就是学术的游戏化。

===========

有人提出教学不能因人设课;

但是真正的教育靠的是优秀的教师,

教师的自主教学权对教育质量攸关重要。

然而,

国际上教师都受限于以前制定的教学大纲,

国际上大学教师都是学生一票否决。

国际上大学

学术游戏化,或者说是白左的所谓“政治正确”。

期刊同行评审就是学术的游戏化,“政治正确化”的典型代表。

===

我们关心的仅仅是能不能在顶刊上把文章发表出去,

我们并不关心发表的文章是不是有价值。

https://doi.org/10.32388/2FM225



https://blog.sciencenet.cn/blog-3589443-1438350.html

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