57205377820

F-1635-2016

FR7GX70AAAAJ

Федосов Денис Сергеевич

Denis Sergeevich Fedosov

к.т.н., доц.

Иркутский национальный исследовательский технический университет

Публикаций

Цитирований

Индекс Хирша

Области научных интересов

Релейная защита Электромагнитная совместимость

Навыки

Arduino AutoCAD Delphi Excel MATLAB Mathcad SimInTech Simulink labVIEW

Лаборатории

Кафедра электрических станций, сетей и систем

Руководитель

Аффилиации

Иркутский национальный исследовательский технический университет

2018 — 2026

Образование

Иркутский национальный исследовательский технический университет

2005 — 2010, Специалитет, Энергетический факультет

Диссертации

Разработка метода оценки влияния потребителей на несинусоидальность и несимметрию напряжений в электрической сети

2014, Кандидатская , Электроэнергетика, 2.4.3

Всего публикаций

Всего цитирований

Цитирований на публикацию

1.71

Среднее число публикаций в год

1.89

Среднее число соавторов

2.47

Годы публикаций

2018-2026 (9 лет)

h-index

i10-index

m-index

0.44

o-index

g-index

w-index

Описание метрик

h-index

Учёный имеет индекс h, если h из его N статей цитируются как минимум h раз каждая, в то время как оставшиеся (N - h) статей цитируются не более чем h раз каждая.

https://www.pnas.org/doi/full/10.1073/pnas.0507655102

i10-index

Число статей автора, получивших не менее 10 ссылок каждая.

https://scholar.googleblog.com/2011/11/google-scholar-citations-open-to-all.html

m-index

m-индекс ученого численно равен отношению его h-индекса к количеству лет, прошедших с момента первой публикации.

https://harzing.com/publications/white-papers/reflections-on-the-h-index

o-index

Среднее геометрическое h-индекса и числа цитирований наиболее цитируемой статьи ученого.

https://arxiv.org/abs/1511.01545

g-index

Для данного множества статей, отсортированного в порядке убывания количества цитирований, которые получили эти статьи, g-индекс это наибольшее число, такое что g самых цитируемых статей получили (суммарно) не менее g² цитирований.

https://doi.org/10.1007/s11192-006-0144-7

w-index

Если w статей ученого имеют не менее 10w цитирований каждая и другие статьи меньше, чем 10(w+1) цитирований, то w-индекс исследователя равен w.

https://doi.org/10.1002/asi.21276

Топ-100

Области наук

	1 2
General Medicine	General Medicine, 2, 11.76% General Medicine 2 публикации, 11.76%
	1 2

Журналы

	1 2 3
iPolytech Journal	iPolytech Journal, 3, 17.65% iPolytech Journal 3 публикации, 17.65%
Power engineering research equipment technology	Power engineering research equipment technology, 2, 11.76% Power engineering research equipment technology 2 публикации, 11.76%
Materials Science and Engineering B: Solid-State Materials for Advanced Technology	Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 1, 5.88% Materials Science and Engineering B: Solid-State Materials for Advanced Technology 1 публикация, 5.88%
Energy Reports	Energy Reports, 1, 5.88% Energy Reports 1 публикация, 5.88%
Energies	Energies, 1, 5.88% Energies 1 публикация, 5.88%
Интеллектуальная электротехника	Интеллектуальная электротехника, 1, 5.88% Интеллектуальная электротехника 1 публикация, 5.88%
Financial and Economic Journal	Financial and Economic Journal, 1, 5.88% Financial and Economic Journal 1 публикация, 5.88%
	1 2 3

Цитирующие журналы

	1 2 3 4 5 6 7 8 9
Журнал не определён	Журнал не определён, 9, 31.03% Журнал не определён 9 цитирований, 31.03%
Energy Reports	Energy Reports, 4, 13.79% Energy Reports 4 цитирования, 13.79%
Russian Physics Journal	Russian Physics Journal, 3, 10.34% Russian Physics Journal 3 цитирования, 10.34%
iPolytech Journal	iPolytech Journal, 3, 10.34% iPolytech Journal 3 цитирования, 10.34%
Power engineering research equipment technology	Power engineering research equipment technology, 2, 6.9% Power engineering research equipment technology 2 цитирования, 6.9%
Journal of Surface Investigation	Journal of Surface Investigation, 1, 3.45% Journal of Surface Investigation 1 цитирование, 3.45%
Silicon	Silicon, 1, 3.45% Silicon 1 цитирование, 3.45%
Optical Materials	Optical Materials, 1, 3.45% Optical Materials 1 цитирование, 3.45%
IEEE Internet of Things Journal	IEEE Internet of Things Journal, 1, 3.45% IEEE Internet of Things Journal 1 цитирование, 3.45%
Radiation Physics and Chemistry	Radiation Physics and Chemistry, 1, 3.45% Radiation Physics and Chemistry 1 цитирование, 3.45%
International Journal of Electrical Power and Energy Systems	International Journal of Electrical Power and Energy Systems, 1, 3.45% International Journal of Electrical Power and Energy Systems 1 цитирование, 3.45%
Brazilian Journal of Physics	Brazilian Journal of Physics, 1, 3.45% Brazilian Journal of Physics 1 цитирование, 3.45%
Energies	Energies, 1, 3.45% Energies 1 цитирование, 3.45%
	1 2 3 4 5 6 7 8 9

Цитируемые журналы

	10 20 30 40 50 60
Журнал не определён	Журнал не определён, 53, 23.98% Журнал не определён 53 цитирования, 23.98%
IEEE Transactions on Power Delivery	IEEE Transactions on Power Delivery, 11, 4.98% IEEE Transactions on Power Delivery 11 цитирований, 4.98%
IEEE Access	IEEE Access, 10, 4.52% IEEE Access 10 цитирований, 4.52%
IEEE Transactions on Smart Grid	IEEE Transactions on Smart Grid, 5, 2.26% IEEE Transactions on Smart Grid 5 цитирований, 2.26%
iPolytech Journal	iPolytech Journal, 5, 2.26% iPolytech Journal 5 цитирований, 2.26%
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 4, 1.81% Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 4 цитирования, 1.81%
Ceramics International	Ceramics International, 4, 1.81% Ceramics International 4 цитирования, 1.81%
Energies	Energies, 4, 1.81% Energies 4 цитирования, 1.81%
Journal of Physics: Conference Series	Journal of Physics: Conference Series, 3, 1.36% Journal of Physics: Conference Series 3 цитирования, 1.36%
Nano-Micro Letters	Nano-Micro Letters, 3, 1.36% Nano-Micro Letters 3 цитирования, 1.36%
Electric Power Systems Research	Electric Power Systems Research, 3, 1.36% Electric Power Systems Research 3 цитирования, 1.36%
E3S Web of Conferences	E3S Web of Conferences, 3, 1.36% E3S Web of Conferences 3 цитирования, 1.36%
Applied Energy	Applied Energy, 3, 1.36% Applied Energy 3 цитирования, 1.36%
International Journal of Electrical Power and Energy Systems	International Journal of Electrical Power and Energy Systems, 3, 1.36% International Journal of Electrical Power and Energy Systems 3 цитирования, 1.36%
Power Technology and Engineering	Power Technology and Engineering, 3, 1.36% Power Technology and Engineering 3 цитирования, 1.36%
IEEE Transactions on Industry Applications	IEEE Transactions on Industry Applications, 3, 1.36% IEEE Transactions on Industry Applications 3 цитирования, 1.36%
MATEC Web of Conferences	MATEC Web of Conferences, 2, 0.9% MATEC Web of Conferences 2 цитирования, 0.9%
Mathematics	Mathematics, 2, 0.9% Mathematics 2 цитирования, 0.9%
IOP Conference Series: Materials Science and Engineering	IOP Conference Series: Materials Science and Engineering, 2, 0.9% IOP Conference Series: Materials Science and Engineering 2 цитирования, 0.9%
Energy Conversion and Management	Energy Conversion and Management, 2, 0.9% Energy Conversion and Management 2 цитирования, 0.9%
IEEE Sensors Journal	IEEE Sensors Journal, 2, 0.9% IEEE Sensors Journal 2 цитирования, 0.9%
Surface and Coatings Technology	Surface and Coatings Technology, 2, 0.9% Surface and Coatings Technology 2 цитирования, 0.9%
Radiation Physics and Chemistry	Radiation Physics and Chemistry, 2, 0.9% Radiation Physics and Chemistry 2 цитирования, 0.9%
Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations	Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations, 2, 0.9% Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations 2 цитирования, 0.9%
Russian Electrical Engineering	Russian Electrical Engineering, 2, 0.9% Russian Electrical Engineering 2 цитирования, 0.9%
IEEE Transactions on Power Systems	IEEE Transactions on Power Systems, 2, 0.9% IEEE Transactions on Power Systems 2 цитирования, 0.9%
Energy Reports	Energy Reports, 2, 0.9% Energy Reports 2 цитирования, 0.9%
Energy	Energy, 2, 0.9% Energy 2 цитирования, 0.9%
IEEE Transactions on Power Electronics	IEEE Transactions on Power Electronics, 2, 0.9% IEEE Transactions on Power Electronics 2 цитирования, 0.9%
Physical Review B	Physical Review B, 2, 0.9% Physical Review B 2 цитирования, 0.9%
Journal of Siberian Federal University. Engineering & Technologies	Journal of Siberian Federal University. Engineering & Technologies, 2, 0.9% Journal of Siberian Federal University. Engineering & Technologies 2 цитирования, 0.9%
IEEE Open Access Journal of Power and Energy	IEEE Open Access Journal of Power and Energy, 2, 0.9% IEEE Open Access Journal of Power and Energy 2 цитирования, 0.9%
Power engineering research equipment technology	Power engineering research equipment technology, 2, 0.9% Power engineering research equipment technology 2 цитирования, 0.9%
Journal of Surface Investigation	Journal of Surface Investigation, 1, 0.45% Journal of Surface Investigation 1 цитирование, 0.45%
Nanoscale	Nanoscale, 1, 0.45% Nanoscale 1 цитирование, 0.45%
TrAC - Trends in Analytical Chemistry	TrAC - Trends in Analytical Chemistry, 1, 0.45% TrAC - Trends in Analytical Chemistry 1 цитирование, 0.45%
Materials Letters	Materials Letters, 1, 0.45% Materials Letters 1 цитирование, 0.45%
International Transactions on Electrical Energy Systems	International Transactions on Electrical Energy Systems, 1, 0.45% International Transactions on Electrical Energy Systems 1 цитирование, 0.45%
International Journal of Environmental Research and Public Health	International Journal of Environmental Research and Public Health, 1, 0.45% International Journal of Environmental Research and Public Health 1 цитирование, 0.45%
Molecules	Molecules, 1, 0.45% Molecules 1 цитирование, 0.45%
RSC Advances	RSC Advances, 1, 0.45% RSC Advances 1 цитирование, 0.45%
Progress in Quantum Electronics	Progress in Quantum Electronics, 1, 0.45% Progress in Quantum Electronics 1 цитирование, 0.45%
Sustainable Cities and Society	Sustainable Cities and Society, 1, 0.45% Sustainable Cities and Society 1 цитирование, 0.45%
Eastern-European Journal of Enterprise Technologies	Eastern-European Journal of Enterprise Technologies, 1, 0.45% Eastern-European Journal of Enterprise Technologies 1 цитирование, 0.45%
Energy Conversion and Management: X	Energy Conversion and Management: X, 1, 0.45% Energy Conversion and Management: X 1 цитирование, 0.45%
IEEE Transactions on Industrial Electronics	IEEE Transactions on Industrial Electronics, 1, 0.45% IEEE Transactions on Industrial Electronics 1 цитирование, 0.45%
Materials Today	Materials Today, 1, 0.45% Materials Today 1 цитирование, 0.45%
Chemical Physics Letters	Chemical Physics Letters, 1, 0.45% Chemical Physics Letters 1 цитирование, 0.45%
Superconductor Science and Technology	Superconductor Science and Technology, 1, 0.45% Superconductor Science and Technology 1 цитирование, 0.45%
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 1, 0.45% Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy 1 цитирование, 0.45%
International Journal of Green Energy	International Journal of Green Energy, 1, 0.45% International Journal of Green Energy 1 цитирование, 0.45%
International Journal of Emerging Electric Power Systems	International Journal of Emerging Electric Power Systems, 1, 0.45% International Journal of Emerging Electric Power Systems 1 цитирование, 0.45%
IEEE Transactions on Industrial Informatics	IEEE Transactions on Industrial Informatics, 1, 0.45% IEEE Transactions on Industrial Informatics 1 цитирование, 0.45%
Journal of Physical Chemistry C	Journal of Physical Chemistry C, 1, 0.45% Journal of Physical Chemistry C 1 цитирование, 0.45%
Optics Express	Optics Express, 1, 0.45% Optics Express 1 цитирование, 0.45%
The Analyst	The Analyst, 1, 0.45% The Analyst 1 цитирование, 0.45%
IEEE Computational Intelligence Magazine	IEEE Computational Intelligence Magazine, 1, 0.45% IEEE Computational Intelligence Magazine 1 цитирование, 0.45%
IET Generation, Transmission and Distribution	IET Generation, Transmission and Distribution, 1, 0.45% IET Generation, Transmission and Distribution 1 цитирование, 0.45%
Dyes and Pigments	Dyes and Pigments, 1, 0.45% Dyes and Pigments 1 цитирование, 0.45%
Polymer Degradation and Stability	Polymer Degradation and Stability, 1, 0.45% Polymer Degradation and Stability 1 цитирование, 0.45%
Journal of Magnetism and Magnetic Materials	Journal of Magnetism and Magnetic Materials, 1, 0.45% Journal of Magnetism and Magnetic Materials 1 цитирование, 0.45%
Inventions	Inventions, 1, 0.45% Inventions 1 цитирование, 0.45%
IEEE Transactions on Instrumentation and Measurement	IEEE Transactions on Instrumentation and Measurement, 1, 0.45% IEEE Transactions on Instrumentation and Measurement 1 цитирование, 0.45%
Mathematical Problems in Engineering	Mathematical Problems in Engineering, 1, 0.45% Mathematical Problems in Engineering 1 цитирование, 0.45%
Materials Characterization	Materials Characterization, 1, 0.45% Materials Characterization 1 цитирование, 0.45%
Journal of Modern Power Systems and Clean Energy	Journal of Modern Power Systems and Clean Energy, 1, 0.45% Journal of Modern Power Systems and Clean Energy 1 цитирование, 0.45%
Journal of Applied Physics	Journal of Applied Physics, 1, 0.45% Journal of Applied Physics 1 цитирование, 0.45%
Materials Chemistry and Physics	Materials Chemistry and Physics, 1, 0.45% Materials Chemistry and Physics 1 цитирование, 0.45%
IEEE Transactions on Sustainable Energy	IEEE Transactions on Sustainable Energy, 1, 0.45% IEEE Transactions on Sustainable Energy 1 цитирование, 0.45%
Frontiers in Energy Research	Frontiers in Energy Research, 1, 0.45% Frontiers in Energy Research 1 цитирование, 0.45%
Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)	Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi), 1, 0.45% Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) 1 цитирование, 0.45%
Scientific Reports	Scientific Reports, 1, 0.45% Scientific Reports 1 цитирование, 0.45%
International Journal of Power Electronics and Drive Systems	International Journal of Power Electronics and Drive Systems, 1, 0.45% International Journal of Power Electronics and Drive Systems 1 цитирование, 0.45%
IEEJ Transactions on Power and Energy	IEEJ Transactions on Power and Energy, 1, 0.45% IEEJ Transactions on Power and Energy 1 цитирование, 0.45%
Journal of Power Sources	Journal of Power Sources, 1, 0.45% Journal of Power Sources 1 цитирование, 0.45%
Communications of the ACM	Communications of the ACM, 1, 0.45% Communications of the ACM 1 цитирование, 0.45%
Journal of Crystal Growth	Journal of Crystal Growth, 1, 0.45% Journal of Crystal Growth 1 цитирование, 0.45%
International Review of Electrical Engineering	International Review of Electrical Engineering, 1, 0.45% International Review of Electrical Engineering 1 цитирование, 0.45%
Applied Sciences (Switzerland)	Applied Sciences (Switzerland), 1, 0.45% Applied Sciences (Switzerland) 1 цитирование, 0.45%
Bioelectrochemistry	Bioelectrochemistry, 1, 0.45% Bioelectrochemistry 1 цитирование, 0.45%
Procedia Engineering	Procedia Engineering, 1, 0.45% Procedia Engineering 1 цитирование, 0.45%
International Journal of Energy Research	International Journal of Energy Research, 1, 0.45% International Journal of Energy Research 1 цитирование, 0.45%
Faraday Discussions	Faraday Discussions, 1, 0.45% Faraday Discussions 1 цитирование, 0.45%
Transportation Research, Part D: Transport and Environment	Transportation Research, Part D: Transport and Environment, 1, 0.45% Transportation Research, Part D: Transport and Environment 1 цитирование, 0.45%
Progress in Materials Science	Progress in Materials Science, 1, 0.45% Progress in Materials Science 1 цитирование, 0.45%
Icarus	Icarus, 1, 0.45% Icarus 1 цитирование, 0.45%
Periodica polytechnica Electrical engineering and computer science	Periodica polytechnica Electrical engineering and computer science, 1, 0.45% Periodica polytechnica Electrical engineering and computer science 1 цитирование, 0.45%
Ain Shams Engineering Journal	Ain Shams Engineering Journal, 1, 0.45% Ain Shams Engineering Journal 1 цитирование, 0.45%
PLoS ONE	PLoS ONE, 1, 0.45% PLoS ONE 1 цитирование, 0.45%
SSRN Electronic Journal	SSRN Electronic Journal, 1, 0.45% SSRN Electronic Journal 1 цитирование, 0.45%
Engineering Reports	Engineering Reports, 1, 0.45% Engineering Reports 1 цитирование, 0.45%
Vestnik IGEU	Vestnik IGEU, 1, 0.45% Vestnik IGEU 1 цитирование, 0.45%
ESAIM Proceedings and Surveys	ESAIM Proceedings and Surveys, 1, 0.45% ESAIM Proceedings and Surveys 1 цитирование, 0.45%
Vestnik of Samara State Technical University Technical Sciences Series	Vestnik of Samara State Technical University Technical Sciences Series, 1, 0.45% Vestnik of Samara State Technical University Technical Sciences Series 1 цитирование, 0.45%
Bulletin of the South Ural State University series Power Engineering	Bulletin of the South Ural State University series Power Engineering, 1, 0.45% Bulletin of the South Ural State University series Power Engineering 1 цитирование, 0.45%
Modern technologies System analysis Modeling	Modern technologies System analysis Modeling, 1, 0.45% Modern technologies System analysis Modeling 1 цитирование, 0.45%
Red Giants as Probes of the Structure and Evolution of the Milky Way	Red Giants as Probes of the Structure and Evolution of the Milky Way, 1, 0.45% Red Giants as Probes of the Structure and Evolution of the Milky Way 1 цитирование, 0.45%
2007 IEEE Power Engineering Society General Meeting	2007 IEEE Power Engineering Society General Meeting, 1, 0.45% 2007 IEEE Power Engineering Society General Meeting 1 цитирование, 0.45%
Mechanical Properties and Performance of Engineering Ceramics and Composites IV	Mechanical Properties and Performance of Engineering Ceramics and Composites IV, 1, 0.45% Mechanical Properties and Performance of Engineering Ceramics and Composites IV 1 цитирование, 0.45%
Elektrichestvo	Elektrichestvo, 1, 0.45% Elektrichestvo 1 цитирование, 0.45%

	10 20 30 40 50 60

Издатели

	1 2 3
Irkutsk National Research Technical University	Irkutsk National Research Technical University, 3, 17.65% Irkutsk National Research Technical University 3 публикации, 17.65%
Elsevier	Elsevier, 2, 11.76% Elsevier 2 публикации, 11.76%
Kazan State Power Engineering University	Kazan State Power Engineering University, 2, 11.76% Kazan State Power Engineering University 2 публикации, 11.76%
MDPI	MDPI, 1, 5.88% MDPI 1 публикация, 5.88%
Nizhny Novgorod State Technical University n.a. R.E. Alekseev	Nizhny Novgorod State Technical University n.a. R.E. Alekseev, 1, 5.88% Nizhny Novgorod State Technical University n.a. R.E. Alekseev 1 публикация, 5.88%
Institute for Education and Consulting Development, LLC	Institute for Education and Consulting Development, LLC, 1, 5.88% Institute for Education and Consulting Development, LLC 1 публикация, 5.88%
	1 2 3

Организации из публикаций

	2 4 6 8 10 12
Организация не определена	Организация не определена, 11, 64.71% Организация не определена 11 публикаций, 64.71%
Иркутский национальный исследовательский технический университет	Иркутский национальный исследовательский технический университет, 6, 35.29% Иркутский национальный исследовательский технический университет 6 публикаций, 35.29%
Московский энергетический институт	Московский энергетический институт, 2, 11.76% Московский энергетический институт 2 публикации, 11.76%
Забайкальский государственный университет	Забайкальский государственный университет, 1, 5.88% Забайкальский государственный университет 1 публикация, 5.88%
Шаньдунский женский университет	Шаньдунский женский университет, 1, 5.88% Шаньдунский женский университет 1 публикация, 5.88%
Шаньдунский технологический университет	Шаньдунский технологический университет, 1, 5.88% Шаньдунский технологический университет 1 публикация, 5.88%
Университет Русе Анхеля Канчева	Университет Русе Анхеля Канчева, 1, 5.88% Университет Русе Анхеля Канчева 1 публикация, 5.88%
	2 4 6 8 10 12

Страны из публикаций

	2 4 6 8 10 12 14
Россия	Россия, 14, 82.35% Россия 14 публикаций, 82.35%
Страна не определена	Страна не определена, 3, 17.65% Страна не определена 3 публикации, 17.65%
Китай	Китай, 1, 5.88% Китай 1 публикация, 5.88%
Болгария	Болгария, 1, 5.88% Болгария 1 публикация, 5.88%
Словения	Словения, 1, 5.88% Словения 1 публикация, 5.88%
	2 4 6 8 10 12 14

Цитирующие организации

	2 4 6 8 10 12
Организация не определена	Организация не определена, 12, 41.38% Организация не определена 12 цитирований, 41.38%
Томский государственный университет систем управления и радиоэлектроники	Томский государственный университет систем управления и радиоэлектроники, 7, 24.14% Томский государственный университет систем управления и радиоэлектроники 7 цитирований, 24.14%
Торайгыров Университет	Торайгыров Университет, 2, 6.9% Торайгыров Университет 2 цитирования, 6.9%
Уральский федеральный университет имени первого Президента России Б.Н. Ельцина	Уральский федеральный университет имени первого Президента России Б.Н. Ельцина, 1, 3.45% Уральский федеральный университет имени первого Президента России Б.Н. Ельцина 1 цитирование, 3.45%
Иркутский национальный исследовательский технический университет	Иркутский национальный исследовательский технический университет, 1, 3.45% Иркутский национальный исследовательский технический университет 1 цитирование, 3.45%
Югорский государственный университет	Югорский государственный университет, 1, 3.45% Югорский государственный университет 1 цитирование, 3.45%
Университет Стоуни-Брук	Университет Стоуни-Брук, 1, 3.45% Университет Стоуни-Брук 1 цитирование, 3.45%
	2 4 6 8 10 12

Цитирующие страны

	2 4 6 8 10 12 14 16 18
Россия	Россия, 17, 58.62% Россия 17 цитирований, 58.62%
Страна не определена	Страна не определена, 4, 13.79% Страна не определена 4 цитирования, 13.79%
Китай	Китай, 3, 10.34% Китай 3 цитирования, 10.34%
Казахстан	Казахстан, 2, 6.9% Казахстан 2 цитирования, 6.9%
США	США, 1, 3.45% США 1 цитирование, 3.45%
	2 4 6 8 10 12 14 16 18