Chinese Space Science and Technology

Chinese Space Science and Technology，sponsored by China Academy of Space Technology， is an academic and technical journal which introduces Chinese spacecraft engineering technology thoroughly and systematically. Marshal Nie Rongzhen, former vice chairman of the Central Military Commission of the People's Republic of China was much concerned about this journal. The first publication of this journal was published in June.1981. Marshal Nie Rongzhen himself inscribed for the journal and also expressed his best wishes as “Rapid development for Chinese space science and technology, Great achievements for comrades”. The purpose of the journal is to “communicate scientific research achievements, explore advanced technology, activate academic research, encourage the growth of elites, and serve space undertaking”. The goal of the journal is to make Chinese Space Science and Technology one of the top domestic academic technology journals. This journal complies with the guideline that is “to let a hundred flowers blossom, to let a hundred schools of thought contend”. Academic democracy is encouraged and academic researches and discussions are carried out in this journal. We should try our best to make this journal as an important carrier for the personnel of Chinese space science and technology to publish their research achievements, to have academic communication with each other, and to explore advanced technology. We should also try our best to make this journal as an important window to propagandize and show the academic achievements of Chinese space science and technology, and also as a “bridge” or “link” for communications among personnel who engage in scientific researches in space technology areas.

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Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Category	Year	Quartile
Aerospace Engineering	2005	Q4
Aerospace Engineering	2006	Q4
Aerospace Engineering	2007	Q3
Aerospace Engineering	2008	Q3
Aerospace Engineering	2009	Q3
Aerospace Engineering	2010	Q3
Aerospace Engineering	2011	Q3
Aerospace Engineering	2012	Q3
Aerospace Engineering	2013	Q3
Aerospace Engineering	2014	Q3
Aerospace Engineering	2015	Q3
Aerospace Engineering	2016	Q3
Aerospace Engineering	2017	Q3
Aerospace Engineering	2018	Q3
Aerospace Engineering	2019	Q3
Aerospace Engineering	2020	Q4
Aerospace Engineering	2021	Q3
Aerospace Engineering	2022	Q3
Aerospace Engineering	2023	Q3
Electrical and Electronic Engineering	2005	Q4
Electrical and Electronic Engineering	2006	Q4
Electrical and Electronic Engineering	2007	Q3
Electrical and Electronic Engineering	2008	Q3
Electrical and Electronic Engineering	2009	Q3
Electrical and Electronic Engineering	2010	Q3
Electrical and Electronic Engineering	2011	Q3
Electrical and Electronic Engineering	2012	Q3
Electrical and Electronic Engineering	2013	Q3
Electrical and Electronic Engineering	2014	Q3
Electrical and Electronic Engineering	2015	Q3
Electrical and Electronic Engineering	2016	Q3
Electrical and Electronic Engineering	2017	Q3
Electrical and Electronic Engineering	2018	Q3
Electrical and Electronic Engineering	2019	Q3
Electrical and Electronic Engineering	2020	Q3
Electrical and Electronic Engineering	2021	Q3
Electrical and Electronic Engineering	2022	Q3
Electrical and Electronic Engineering	2023	Q3
Materials Science (miscellaneous)	2005	Q4
Materials Science (miscellaneous)	2006	Q3
Materials Science (miscellaneous)	2007	Q3
Materials Science (miscellaneous)	2008	Q3
Materials Science (miscellaneous)	2009	Q3
Materials Science (miscellaneous)	2010	Q3
Materials Science (miscellaneous)	2011	Q3
Materials Science (miscellaneous)	2012	Q3
Materials Science (miscellaneous)	2013	Q3
Materials Science (miscellaneous)	2014	Q3
Materials Science (miscellaneous)	2015	Q3
Materials Science (miscellaneous)	2016	Q3
Materials Science (miscellaneous)	2017	Q3
Materials Science (miscellaneous)	2018	Q3
Materials Science (miscellaneous)	2019	Q3
Materials Science (miscellaneous)	2020	Q4
Materials Science (miscellaneous)	2021	Q3
Materials Science (miscellaneous)	2022	Q3
Materials Science (miscellaneous)	2023	Q3

SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Year	SJR
2005	0.102
2006	0.109
2007	0.125
2008	0.134
2009	0.148
2010	0.166
2011	0.157
2012	0.238
2013	0.208
2014	0.226
2015	0.278
2016	0.246
2017	0.224
2018	0.255
2019	0.220
2020	0.204
2021	0.243
2022	0.245
2023	0.238

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Year	Documents
2004	65
2005	68
2006	67
2007	69
2008	64
2009	69
2010	70
2011	69
2012	70
2013	69
2014	68
2015	63
2016	70
2017	84
2018	63
2019	64
2020	79
2021	90
2022	92
2023	93

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per document	Year	Value
Cites / Doc. (4 years)	2004	0.000
Cites / Doc. (4 years)	2005	0.077
Cites / Doc. (4 years)	2006	0.135
Cites / Doc. (4 years)	2007	0.130
Cites / Doc. (4 years)	2008	0.134
Cites / Doc. (4 years)	2009	0.164
Cites / Doc. (4 years)	2010	0.123
Cites / Doc. (4 years)	2011	0.188
Cites / Doc. (4 years)	2012	0.243
Cites / Doc. (4 years)	2013	0.237
Cites / Doc. (4 years)	2014	0.313
Cites / Doc. (4 years)	2015	0.377
Cites / Doc. (4 years)	2016	0.341
Cites / Doc. (4 years)	2017	0.478
Cites / Doc. (4 years)	2018	0.551
Cites / Doc. (4 years)	2019	0.536
Cites / Doc. (4 years)	2020	0.612
Cites / Doc. (4 years)	2021	0.810
Cites / Doc. (4 years)	2022	1.051
Cites / Doc. (4 years)	2023	0.988
Cites / Doc. (3 years)	2004	0.000
Cites / Doc. (3 years)	2005	0.077
Cites / Doc. (3 years)	2006	0.135
Cites / Doc. (3 years)	2007	0.130
Cites / Doc. (3 years)	2008	0.142
Cites / Doc. (3 years)	2009	0.185
Cites / Doc. (3 years)	2010	0.099
Cites / Doc. (3 years)	2011	0.167
Cites / Doc. (3 years)	2012	0.245
Cites / Doc. (3 years)	2013	0.220
Cites / Doc. (3 years)	2014	0.313
Cites / Doc. (3 years)	2015	0.377
Cites / Doc. (3 years)	2016	0.355
Cites / Doc. (3 years)	2017	0.443
Cites / Doc. (3 years)	2018	0.567
Cites / Doc. (3 years)	2019	0.548
Cites / Doc. (3 years)	2020	0.611
Cites / Doc. (3 years)	2021	0.917
Cites / Doc. (3 years)	2022	1.112
Cites / Doc. (3 years)	2023	1.050
Cites / Doc. (2 years)	2004	0.000
Cites / Doc. (2 years)	2005	0.077
Cites / Doc. (2 years)	2006	0.135
Cites / Doc. (2 years)	2007	0.096
Cites / Doc. (2 years)	2008	0.110
Cites / Doc. (2 years)	2009	0.158
Cites / Doc. (2 years)	2010	0.098
Cites / Doc. (2 years)	2011	0.158
Cites / Doc. (2 years)	2012	0.230
Cites / Doc. (2 years)	2013	0.245
Cites / Doc. (2 years)	2014	0.230
Cites / Doc. (2 years)	2015	0.336
Cites / Doc. (2 years)	2016	0.328
Cites / Doc. (2 years)	2017	0.414
Cites / Doc. (2 years)	2018	0.630
Cites / Doc. (2 years)	2019	0.531
Cites / Doc. (2 years)	2020	0.551
Cites / Doc. (2 years)	2021	0.902
Cites / Doc. (2 years)	2022	1.130
Cites / Doc. (2 years)	2023	1.077

Total Cites

Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Cites	Year	Value
Self Cites	2004	0
Self Cites	2005	0
Self Cites	2006	0
Self Cites	2007	0
Self Cites	2008	0
Self Cites	2009	0
Self Cites	2010	2
Self Cites	2011	8
Self Cites	2012	11
Self Cites	2013	13
Self Cites	2014	6
Self Cites	2015	18
Self Cites	2016	25
Self Cites	2017	53
Self Cites	2018	63
Self Cites	2019	67
Self Cites	2020	72
Self Cites	2021	112
Self Cites	2022	131
Self Cites	2023	56
Total Cites	2004	0
Total Cites	2005	5
Total Cites	2006	18
Total Cites	2007	26
Total Cites	2008	29
Total Cites	2009	37
Total Cites	2010	20
Total Cites	2011	34
Total Cites	2012	51
Total Cites	2013	46
Total Cites	2014	65
Total Cites	2015	78
Total Cites	2016	71
Total Cites	2017	89
Total Cites	2018	123
Total Cites	2019	119
Total Cites	2020	129
Total Cites	2021	189
Total Cites	2022	259
Total Cites	2023	274

External Cites per Doc

Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

Cites	Year	Value
External Cites per document	2004	0
External Cites per document	2005	0.077
External Cites per document	2006	0.135
External Cites per document	2007	0.130
External Cites per document	2008	0.142
External Cites per document	2009	0.185
External Cites per document	2010	0.089
External Cites per document	2011	0.128
External Cites per document	2012	0.192
External Cites per document	2013	0.158
External Cites per document	2014	0.284
External Cites per document	2015	0.290
External Cites per document	2016	0.230
External Cites per document	2017	0.179
External Cites per document	2018	0.276
External Cites per document	2019	0.240
External Cites per document	2020	0.270
External Cites per document	2021	0.374
External Cites per document	2022	0.549
External Cites per document	2023	0.835
Cites per document	2004	0.000
Cites per document	2005	0.077
Cites per document	2006	0.135
Cites per document	2007	0.130
Cites per document	2008	0.142
Cites per document	2009	0.185
Cites per document	2010	0.099
Cites per document	2011	0.167
Cites per document	2012	0.245
Cites per document	2013	0.220
Cites per document	2014	0.313
Cites per document	2015	0.377
Cites per document	2016	0.355
Cites per document	2017	0.443
Cites per document	2018	0.567
Cites per document	2019	0.548
Cites per document	2020	0.611
Cites per document	2021	0.917
Cites per document	2022	1.112
Cites per document	2023	1.050

% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

Year	International Collaboration
2004	0.00
2005	0.00
2006	0.00
2007	4.35
2008	0.00
2009	0.00
2010	2.86
2011	0.00
2012	0.00
2013	0.00
2014	0.00
2015	1.59
2016	1.43
2017	0.00
2018	0.00
2019	0.00
2020	2.53
2021	0.00
2022	2.17
2023	0.00

Citable documents

Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Documents	Year	Value
Non-citable documents	2004	0
Non-citable documents	2005	0
Non-citable documents	2006	0
Non-citable documents	2007	0
Non-citable documents	2008	0
Non-citable documents	2009	0
Non-citable documents	2010	0
Non-citable documents	2011	0
Non-citable documents	2012	0
Non-citable documents	2013	0
Non-citable documents	2014	0
Non-citable documents	2015	0
Non-citable documents	2016	0
Non-citable documents	2017	0
Non-citable documents	2018	0
Non-citable documents	2019	0
Non-citable documents	2020	0
Non-citable documents	2021	0
Non-citable documents	2022	0
Non-citable documents	2023	0
Citable documents	2004	0
Citable documents	2005	65
Citable documents	2006	133
Citable documents	2007	200
Citable documents	2008	204
Citable documents	2009	200
Citable documents	2010	202
Citable documents	2011	203
Citable documents	2012	208
Citable documents	2013	209
Citable documents	2014	208
Citable documents	2015	207
Citable documents	2016	200
Citable documents	2017	201
Citable documents	2018	217
Citable documents	2019	217
Citable documents	2020	211
Citable documents	2021	206
Citable documents	2022	233
Citable documents	2023	261

Cited documents

Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Documents	Year	Value
Uncited documents	2004	0
Uncited documents	2005	61
Uncited documents	2006	116
Uncited documents	2007	180
Uncited documents	2008	181
Uncited documents	2009	176
Uncited documents	2010	185
Uncited documents	2011	173
Uncited documents	2012	164
Uncited documents	2013	169
Uncited documents	2014	158
Uncited documents	2015	151
Uncited documents	2016	153
Uncited documents	2017	136
Uncited documents	2018	127
Uncited documents	2019	132
Uncited documents	2020	130
Uncited documents	2021	96
Uncited documents	2022	107
Uncited documents	2023	133
Cited documents	2004	0
Cited documents	2005	4
Cited documents	2006	17
Cited documents	2007	20
Cited documents	2008	23
Cited documents	2009	24
Cited documents	2010	17
Cited documents	2011	30
Cited documents	2012	44
Cited documents	2013	40
Cited documents	2014	50
Cited documents	2015	56
Cited documents	2016	47
Cited documents	2017	65
Cited documents	2018	90
Cited documents	2019	85
Cited documents	2020	81
Cited documents	2021	110
Cited documents	2022	126
Cited documents	2023	128