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Company · Sacramento · United States

Sierra Engineering (United States)

In research, Sierra Engineering (United States) stands highest in Physical Sciences (#11,005 of 17,446 worldwide), over all time.

sierraengineering.comROR OpenAlex
World rank, all time
#20,713
of 34,923
Rank in United States
#4,300
of 7,310
Research works
220
▲ 47% vs 2018-21
Citations
2.7k
12.4 per fractional work
Top-10% rate
10.5%
all institutions 10.0%
vs its own fields
1.00×
1.00× is exactly expected
Open access
42%
world 40%
International
17%
world 18%
Sierra Engineering (United States)

What is Sierra Engineering (United States) known for in research?

The fields where it stands highest, over all time, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorks
Physical SciencesDomain #11,005 of 17,446 5.5%149

Each strip is that field's whole ranked pool, with the notch where Sierra Engineering (United States) 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 average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does Sierra Engineering (United States) work in?

In 2022-now, 48% of research at Sierra Engineering (United States) is in Physical Sciences, 25% in Social Sciences. Its largest fields are Engineering (17%), Computer Science (16%), Medicine (12%).

Physical Sciences: 13 fractional works · 47.5% of its workEngineering: 5 fractional works · 17.4% of its workAerospace Engineering: 2 fractional works · 5.3% of its workOcean Engineering: 1 fractional works · 3.5% of its workCivil and Structural Engineering: 1 fractional works · 2.0% of its workBiomedical Engineering: 1 fractional works · 1.8% of its workSafety, Risk, Reliability and Quality: 0 fractional works · 1.6% of its workControl and Systems Engineering: 0 fractional works · 1.2% of its workMechanical Engineering: 0 fractional works · 0.9% of its workElectrical and Electronic Engineering: 0 fractional works · 0.6% of its workBuilding and Construction: 0 fractional works · 0.3% of its workIndustrial and Manufacturing Engineering: 0 fractional works · 0.3% of its workComputer Science: 4 fractional works · 15.9% of its workComputer Networks and Communications: 2 fractional works · 5.9% of its workComputer Vision and Pattern Recognition: 1 fractional works · 2.9% of its workInformation Systems: 1 fractional works · 2.6% of its workSignal Processing: 1 fractional works · 2.4% of its workArtificial Intelligence: 0 fractional works · 1.8% of its workComputer Science Applications: 0 fractional works · 0.3% of its workEnvironmental Science: 2 fractional works · 5.5% of its workEcology: 1 fractional works · 2.7% of its workGlobal and Planetary Change: 0 fractional works · 1.3% of its workNature and Landscape Conservation: 0 fractional works · 1.2% of its workSmaller subfields together: 0 fractional works · 0.3% of its workMaterials Science: 1 fractional works · 2.6% of its workMaterials Chemistry: 0 fractional works · 1.2% of its workCeramics and Composites: 0 fractional works · 1.0% of its workPolymers and Plastics: 0 fractional works · 0.4% of its workPhysics and Astronomy: 1 fractional works · 2.4% of its workAstronomy and Astrophysics: 0 fractional works · 1.5% of its workAtomic and Molecular Physics, and Optics: 0 fractional works · 0.6% of its workRadiation: 0 fractional works · 0.3% of its workChemistry: 0 fractional works · 1.3% of its workInorganic Chemistry: 0 fractional works · 0.6% of its workPhysical and Theoretical Chemistry: 0 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEarth and Planetary Sciences: 0 fractional works · 1.2% of its workPaleontology: 0 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.6% of its workEnergy: 0 fractional works · 1.1% of its workRenewable Energy, Sustainability and the Environment: 0 fractional works · 0.8% of its workNuclear Energy and Engineering: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.0% of its workMathematics: 0 fractional works · 0.1% of its workSocial Sciences: 7 fractional works · 24.7% of its workSocial Sciences: 3 fractional works · 12.0% of its workLaw: 1 fractional works · 3.5% of its workSociology and Political Science: 1 fractional works · 3.3% of its workEducation: 1 fractional works · 2.0% of its workTransportation: 0 fractional works · 1.2% of its workAnthropology: 0 fractional works · 0.8% of its workCultural Studies: 0 fractional works · 0.4% of its workUrban Studies: 0 fractional works · 0.4% of its workArcheology: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workBusiness, Management and Accounting: 1 fractional works · 5.0% of its workManagement of Technology and Innovation: 1 fractional works · 3.7% of its workAccounting: 0 fractional works · 1.3% of its workDecision Sciences: 1 fractional works · 4.0% of its workManagement Science and Operations Research: 1 fractional works · 4.0% of its workArts and Humanities: 1 fractional works · 2.6% of its workGeneral Arts and Humanities: 0 fractional works · 1.2% of its workArcheology: 0 fractional works · 0.7% of its workPhilosophy: 0 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.1% of its workPsychology: 0 fractional works · 1.2% of its workSocial Psychology: 0 fractional works · 1.2% of its workHealth Sciences: 4 fractional works · 15.8% of its workMedicine: 4 fractional works · 12.3% of its workPublic Health, Environmental and Occupational Health: 0 fractional works · 1.6% of its workPediatrics, Perinatology and Child Health: 0 fractional works · 1.6% of its workRadiology, Nuclear Medicine and Imaging: 0 fractional works · 1.2% of its workComplementary and alternative medicine: 0 fractional works · 1.2% of its workGenetics: 0 fractional works · 1.0% of its workRheumatology: 0 fractional works · 0.8% of its workHematology: 0 fractional works · 0.8% of its workEpidemiology: 0 fractional works · 0.7% of its workPhysiology: 0 fractional works · 0.6% of its workSurgery: 0 fractional works · 0.5% of its workPulmonary and Respiratory Medicine: 0 fractional works · 0.3% of its workEndocrinology, Diabetes and Metabolism: 0 fractional works · 0.3% of its workNeurology: 0 fractional works · 0.3% of its workOrthopedics and Sports Medicine: 0 fractional works · 0.3% of its workPsychiatry and Mental health: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.9% of its workHealth Professions: 1 fractional works · 3.1% of its workPharmacy: 0 fractional works · 1.3% of its workSpeech and Hearing: 0 fractional works · 1.2% of its workGeneral Health Professions: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.2% of its workNursing: 0 fractional works · 0.4% of its workNutrition and Dietetics: 0 fractional works · 0.4% of its workLife Sciences: 3 fractional works · 11.9% of its workBiochemistry, Genetics and Molecular Biology: 2 fractional works · 7.0% of its workMolecular Biology: 1 fractional works · 2.9% of its workAging: 0 fractional works · 1.2% of its workDevelopmental Biology: 0 fractional works · 1.2% of its workCancer Research: 0 fractional works · 0.6% of its workClinical Biochemistry: 0 fractional works · 0.5% of its workBiochemistry: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.3% of its workAgricultural and Biological Sciences: 1 fractional works · 2.6% of its workPlant Science: 0 fractional works · 0.9% of its workForestry: 0 fractional works · 0.4% of its workEcology, Evolution, Behavior and Systematics: 0 fractional works · 0.3% of its workGeneral Agricultural and Biological Sciences: 0 fractional works · 0.3% of its workInsect Science: 0 fractional works · 0.3% of its workSoil Science: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workNeuroscience: 0 fractional works · 1.8% of its workCellular and Molecular Neuroscience: 0 fractional works · 1.2% of its workNeurology: 0 fractional works · 0.6% of its workImmunology and Microbiology: 0 fractional works · 0.5% of its workMicrobiology: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workALL ITS WORKSierraEngineering…28fractional works, 2022-now
Life Sciences12%Physical Sciences48%Health Sciences16%Social Sciences25%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 21 fields, with their numbers
    1. Engineering517.4%
    2. Computer Science415.9%
    3. Environmental Science25.5%
    4. Materials Science12.6%
    5. Physics and Astronomy12.4%
    6. Chemistry01.3%
    7. Earth and Planetary Sciences01.2%
    8. Energy01.1%
    9. Mathematics00.1%
    1. Social Sciences312.0%
    2. Business, Management and Accounting15.0%
    3. Decision Sciences14.0%
    4. Arts and Humanities12.6%
    5. Psychology01.2%
    1. Medicine412.3%
    2. Health Professions13.1%
    3. Nursing00.4%
    1. Biochemistry, Genetics and Molecular Biology27.0%
    2. Agricultural and Biological Sciences12.6%
    3. Neuroscience01.8%
    4. Immunology and Microbiology00.5%
All of science, and how each field's share has moved since 1950: the Science domain explorer

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: 0.54× its world share, 1 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 1.32× its world share, 2 worksBiochemistry, Geneti…Immunology and Microbiology: 0.52× its world share, 0 worksImmunology and Micro…Neuroscience: 1.09× its world share, 0 worksNeuroscienceChemistry: 0.84× its world share, 0 worksChemistryComputer Science: 2.04× its world share, 4 worksComputer ScienceEarth and Planetary Sciences: 0.77× its world share, 0 worksEarth and Planetary …Energy: 1.21× its world share, 0 worksEnergyEngineering: 1.16× its world share, 5 worksEngineeringEnvironmental Science: 1.10× its world share, 2 worksEnvironmental ScienceMaterials Science: 0.74× its world share, 1 worksMaterials ScienceMathematics: 0.12× its world share, 0 worksMathematicsPhysics and Astronomy: 1.06× its world share, 1 worksPhysics and AstronomyHealth Professions: 1.18× its world share, 1 worksHealth ProfessionsMedicine: 0.64× its world share, 4 worksMedicineNursing: 0.80× its world share, 0 worksNursingArts and Humanities: 0.90× its world share, 1 worksArts and HumanitiesBusiness, Management and Accounting: 1.54× its world share, 1 worksBusiness, Management…Decision Sciences: 4.10× its world share, 1 worksDecision SciencesPsychology: 0.39× its world share, 0 worksPsychologySocial Sciences: 0.95× its world share, 3 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Decision Sciences, 4.1×. Every wedge is a field page.

All 21 fields, with their numbers
  1. Decision Sciences4.10×1 works
  2. Computer Science2.04×4 works
  3. Business, Management and Accounting1.54×1 works
  4. Biochemistry, Genetics and Molecular Biology1.32×2 works
  5. Energy1.21×0 works
  6. Health Professions1.18×1 works
  7. Engineering1.16×5 works
  8. Environmental Science1.10×2 works
  9. Neuroscience1.09×0 works
  10. Physics and Astronomy1.06×1 works
  11. Social Sciences0.95×3 works
  12. Arts and Humanities0.90×1 works
  13. Chemistry0.84×0 works
  14. Nursing0.80×0 works
  15. Earth and Planetary Sciences0.77×0 works
  16. Materials Science0.74×1 works
  17. Medicine0.64×4 works
  18. Agricultural and Biological Sciences0.54×1 works
  19. Immunology and Microbiology0.52×0 works
  20. Psychology0.39×0 works
  21. Mathematics0.12×0 works

Who are the top researchers at Sierra Engineering (United States)?

Ranked on the quality score, George R. Mellman and Curtis W. Johnson lead among researchers whose main affiliation is Sierra Engineering (United States).

  1. 1 George R. Mellman United States · #3,861,315 worldwide 350 citations · 36 works
  2. 2 Curtis W. Johnson United States · #5,162,770 worldwide 323 citations · 34 works
All ranked researchers at Sierra Engineering (United States)

What are the most cited papers from Sierra Engineering (United States)?

The most cited paper from Sierra Engineering (United States) is "Diagnostic Performance of 18F-DCFPyL-PET/CT in Men with Biochemically Recurrent Prostate Cancer: Results from the CONDOR Phase III, Multicenter Study" (Michael J. Morris, Steven P. Rowe, Michael A. Gorin et al., 2021), with 401 citations. Next come "Feasibility and Effectiveness of Very Early Intervention for Infants At-Risk for Autism Spectrum Disorder: A Systematic Review" (279) and "An introduction to PON technologies [Topics in Optical Communications]" (226).

Most cited papers
#PaperReleasedCitations
1 Diagnostic Performance of 18F-DCFPyL-PET/CT in Men with Biochemically Recurrent Prostate Cancer: Results from the CONDOR Phase III, Multicenter Study Michael J. Morris, Steven P. Rowe, Michael A. Gorin et al. · Clinical Cancer Research Open access 23 Feb 2021 401
2 Feasibility and Effectiveness of Very Early Intervention for Infants At-Risk for Autism Spectrum Disorder: A Systematic Review Jessica L. Bradshaw, Amanda Mossman Steiner, Grace W. Gengoux et al. · Journal of Autism and Developmental Disorders Review 13 Sep 2014 279
3 An introduction to PON technologies [Topics in Optical Communications] Frank J. Effenberger, David Cleary, Onn Haran et al. · IEEE Communications Magazine Mar 2007 226
4 Modeling conifer tree crown radius and estimating canopy cover Samantha J. Gill, Gregory S. Biging, Edward C. Murphy · Forest Ecology and Management Feb 2000 221
5 A Natural Product Telomerase Activator As Part of a Health Maintenance Program Calvin B. Harley, Wei‐Min Liu, Marı́a A. Blasco et al. · Rejuvenation Research Open access 7 Sep 2010 196
All 60 most cited papers, with filters and sorting

Which keywords describe research at Sierra Engineering (United States)?

By fractional works in 2022-now, weighted toward what it does more of than the world: IoT Security, Machine Learning, Deep Learning, Cybersecurity, Big Data, Intrusion Detection, Network Security and Digital Transformation.

▲ 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-now 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 17 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 17 words, with their numbers
  1. Deep Learning3▲ 3.2×6 topics
  2. Machine Learning3▲ 3.4×5 topics
  3. IoT Security2▲ 27×2 topics
  4. Big Data2▲ 7.4×2 topics
  5. Cybersecurity2▲ 28×2 topics
  6. Intrusion Detection2▲ 41×1 topic
  7. Network Security2▲ 46×1 topic
  8. Artificial Intelligence1▲ 3.1×3 topics
  9. Digital Transformation1▲ 7.6×3 topics
  10. Business Models1▲ 49×1 topic
  11. Customer Experience1▲ 22×1 topic
  12. Data Cleaning1▲ 122×1 topic
  13. Legal Education1▲ 41×1 topic
  14. Professionalism1▲ 22×2 topics
  15. Record Linkage1▲ 122×1 topic
  16. Risk Assessment1▲ 5.5×4 topics
  17. Welfare Rights Advice1▲ 233×1 topic

Which research topics does Sierra Engineering (United States) publish most on?

By volume in 2022-now: Network Security and Intrusion Detection, Data Quality and Management, Digital Innovation in Industries and Legal Education and Practice Innovations.

Network Security and Int…2Network Security and Intrusion Detection: 2 fractional worksData Quality and Management: 1 fractional worksDigital Innovation in Industries: 1 fractional worksLegal Education and Practice Innovations: 1 fractional worksAdvanced Malware Detection Techniques: 1 fractional worksStructural Engineering a…0Structural Engineering and Vibration Analysis: 0 fractional worksSpace Exploration and Technology: 0 fractional worksInfant Health and Development: 0 fractional worksLegal and Regulatory Analysis: 0 fractional worksAnimal Vocal Communication and Behavior: 0 fractional works
Computer Networks and CommunicationsManagement Science and Operations ResearchManagement of Technology and InnovationLaw6 others

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

  1. 1 Network Security and Intrusion Detection Computer Networks and Communications 2 works
  2. 2 Data Quality and Management Management Science and Operations Research 1 works
  3. 3 Digital Innovation in Industries Management of Technology and Innovation 1 works
  4. 4 Legal Education and Practice Innovations Law 1 works
  5. 5 Advanced Malware Detection Techniques Signal Processing 1 works
  6. 6 Structural Engineering and Vibration Analysis Civil and Structural Engineering 0 works
  7. 7 Space Exploration and Technology Aerospace Engineering 0 works
  8. 8 Infant Health and Development Pharmacy 0 works
  9. 9 Legal and Regulatory Analysis Transportation 0 works
  10. 10 Animal Vocal Communication and Behavior Developmental Biology 0 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 available42.1%not open57.9%

World: 40% of research is openly available.

with international co-authors17.3%domestic only82.7%

World: 18% is written across borders.

How has Sierra Engineering (United States)'s research output changed?

Output in 2022-2025 was 47% higher than in 2018-2021.

still counting1990200020102020
grewheldshrank

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

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Sierra Engineering (United States) as a percentage of every work published that year, 0.00011% in 2024.

still counting0.00050%0.0010%0.0015%Sierra Engineering (United States)0.00015% in 202519801990200020102020

Fractional works of Sierra Engineering (United States) over all fractional works that year. How the balance of science has shifted.

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Sierra Engineering (United States) on Science Explorer

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