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Nonprofit · Watertown · United States

Primary Source

In research, Primary Source stands highest in Engineering (#3,241 of 6,636 worldwide) and Physical Sciences (#7,269 of 12,888 worldwide), 2022–2025. Relative to its size it is most specialised in Electrical and Electronic Engineering — Electrical and Electronic Engineering is 5.5× its share of world research.

primarysource.orgROR OpenAlex
World rank, 2022–2025
#8,919
of 28,054 · #14,668 all time
Rank in United States
#1,197
of 4,192
Research works
974
▼ 19% vs 2013–17
Citations
11k
10.9 per fractional work
Top-10% rate
15.1%
record average 16.5%
Open access
33%
world 28%

What is Primary Source known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
EngineeringField #3,241 of 6,636 16.7%81 #5435
Physical SciencesDomain #7,269 of 12,888 15.1%137 #9700

Each strip is that field’s whole ranked pool, with the notch where Primary Source sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

What does Primary Source specialise in?

Where its research is concentrated relative to its size: Electrical and Electronic Engineering takes 5.5× the share of its output that it takes of world research.

  1. Electrical and Electronic EngineeringSubfield · 47.2 works5.5×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.72× its world share, 8 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.26× its world share, 3 worksBiochemistry, Geneti…Immunology and Microbiology: 0.29× its world share, 1 worksImmunology and Micro…Neuroscience: 0.65× its world share, 3 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 1.04× its world share, 1 worksPharmacology, Toxico…Chemical Engineering: 2.29× its world share, 2 worksChemical EngineeringChemistry: 0.69× its world share, 3 worksChemistryComputer Science: 0.82× its world share, 16 worksComputer ScienceEarth and Planetary Sciences: 0.78× its world share, 3 worksEarth and Planetary …Energy: 3.53× its world share, 8 worksEnergyEngineering: 2.21× its world share, 81 worksEngineeringEnvironmental Science: 0.56× its world share, 7 worksEnvironmental ScienceMaterials Science: 1.70× its world share, 14 worksMaterials ScienceMathematics: 0.19× its world share, 0 worksMathematicsPhysics and Astronomy: 0.76× its world share, 4 worksPhysics and AstronomyDentistry: 0.45× its world share, 0 worksDentistryHealth Professions: 1.33× its world share, 8 worksHealth ProfessionsMedicine: 0.93× its world share, 44 worksMedicineNursing: 0.49× its world share, 1 worksNursingVeterinary: 2.10× its world share, 1 worksVeterinaryArts and Humanities: 1.05× its world share, 7 worksArts and HumanitiesBusiness, Management and Accounting: 0.56× its world share, 4 worksBusiness, Management…Decision Sciences: 0.55× its world share, 1 worksDecision SciencesEconomics, Econometrics and Finance: 0.37× its world share, 2 worksEconomics, Econometr…Psychology: 0.81× its world share, 6 worksPsychologySocial Sciences: 0.48× its world share, 15 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Energy, 3.5×. Every wedge is a field page.

Who are the top researchers at Primary Source?

Ranked on the composite score, Roger Manvell and Cyril Béghin lead among researchers whose main affiliation is Primary Source.

  1. 1 Roger Manvell United States · #721,027 worldwide 2 citations · 19 works
  2. 2 Cyril Béghin United States · #789,519 worldwide 2 citations · 88 works
All ranked researchers at Primary Source

Which keywords describe research at Primary Source?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Cathode Materials, Energy Storage, Lithium-ion Batteries, Rechargeable Batteries, Power Electronics, Renewable Energy Integration, Renewable Energy and Thermal Management.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Cathode Materials15▲ 15×3 topics
  2. Energy Storage14▲ 8.8×10 topics
  3. Lithium-ion Batteries14▲ 14×4 topics
  4. Renewable Energy12▲ 3.5×26 topics
  5. Epidemiology9◆ 0.96×55 topics
  6. Rechargeable Batteries9▲ 14×2 topics
  7. Power Electronics9▲ 11×7 topics
  8. Renewable Energy Integration8▲ 10×5 topics
  9. Thermal Management8▲ 10×4 topics
  10. Battery Technology7▲ 11×3 topics
  11. Electric Vehicles7▲ 9.7×3 topics
  12. Energy Efficiency6▲ 2.9×16 topics
  13. Sustainability6◆ 1.09×20 topics
  14. Battery Materials6▲ 16×1 topic
  15. Nanostructured Anodes6▲ 16×1 topic
  16. Safety Concerns6▲ 17×2 topics
  17. Battery Management Systems6▲ 16×1 topic
  18. Thermal Runaway6▲ 16×1 topic
  19. Lithium-Sulfur Batteries6▲ 17×2 topics
  20. Nanostructured Cathodes6▲ 19×1 topic
  21. Solid-State Electrolytes6▲ 19×1 topic
  22. Electric Vehicle Charging5▲ 25×2 topics
  23. Nanomaterials5▲ 1.90×8 topics
  24. Nanocomposites5▲ 2.4×13 topics
  25. DC-DC Converters4▲ 32×1 topic
  26. High-Frequency Power Conversion4▲ 32×1 topic
  27. Optimization4▲ 3.2×9 topics
  28. Smart Grid4▲ 4.0×7 topics
  29. Fault Tolerance4▲ 9.0×5 topics
  30. Electrocatalysis3▲ 5.0×5 topics
  31. Metal-Organic Frameworks3▲ 3.4×3 topics
  32. Efficiency3▲ 4.4×6 topics
  33. Model Predictive Control3▲ 5.0×3 topics
  34. Aqueous Zinc-Ion Batteries3▲ 11×1 topic
  35. Zinc Anode3▲ 11×1 topic
  36. Energy Conversion3▲ 5.2×4 topics
  37. Reliability3▲ 14×2 topics
  38. Polymer Electrolyte Membranes2▲ 13×1 topic
  39. Proton Exchange Membranes2▲ 13×1 topic
  40. Photovoltaic Systems2▲ 11×2 topics

Which research topics does Primary Source publish most on?

By volume in 2022–2025: Advancements in Battery Materials, Advanced Battery Technologies Research, Advanced Battery Materials and Technologies and Advanced DC-DC Converters.

Advancements in Battery Materials: 6 fractional worksAdvanced Battery Technologies Research: 6 fractional worksAdvanced Battery Materials and Technologies: 6 fractional worksAdvanced DC-DC Converters: 4 fractional worksAdvanced battery technologies research: 3 fractional worksFuel Cells and Related M…2Fuel Cells and Related Materials: 2 fractional worksMultilevel Inverters and Converters: 2 fractional worksElectrocatalysts for Energy Conversion: 2 fractional worksBiblical Studies and Interpretation: 2 fractional worksSilicon Carbide Semiconductor Technologies: 1 fractional works
Electrical and Electronic EngineeringAutomotive EngineeringRenewable Energy, Sustainability and the EnvironmentReligious studies

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Advancements in Battery Materials Electrical and Electronic Engineering 6 works
  2. 2 Advanced Battery Technologies Research Automotive Engineering 6 works
  3. 3 Advanced Battery Materials and Technologies Electrical and Electronic Engineering 6 works
  4. 4 Advanced DC-DC Converters Electrical and Electronic Engineering 4 works
  5. 5 Advanced battery technologies research Electrical and Electronic Engineering 3 works
  6. 6 Fuel Cells and Related Materials Electrical and Electronic Engineering 2 works
  7. 7 Multilevel Inverters and Converters Electrical and Electronic Engineering 2 works
  8. 8 Electrocatalysts for Energy Conversion Renewable Energy, Sustainability and the Environment 2 works
  9. 9 Biblical Studies and Interpretation Religious studies 2 works
  10. 10 Silicon Carbide Semiconductor Technologies Electrical and Electronic Engineering 1 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available33.0%not open67.0%

World: 28% of research is openly available.

with international co-authors37.9%domestic only62.1%

World: 19% is written across borders.

How has Primary Source's research output changed?

Output in 2018–2022 was 19% lower than in 2013–2017.

1990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Watertown

All research institutions in Watertown

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.