Science Explorer Back to mapMap
Discussion
University · Jerusalem · Israel

Jerusalem College of Technology

In research, Jerusalem College of Technology stands highest in Social Sciences (#5,391 of 9,585 worldwide), Physical Sciences (#7,757 of 10,670 worldwide) and Health Sciences (#7,508 of 9,902 worldwide), 2022-now.

jct.ac.ilROR OpenAlex
World rank, 2022-now
#7,155
of 22,385 · #4,279 all time
Rank in Israel
#22
of 87
Research works
1.8k
▲ 14% vs 2018-21
Citations
18k
10.2 per fractional work
Top-10% rate
8.3%
all institutions 10.0%
vs its own fields
0.85×
1.00× is exactly expected
Open access
37%
world 40%
International
20%
world 18%
Jerusalem College of Technology

What is Jerusalem College of Technology known for in research?

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

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Social SciencesDomain #5,391 of 9,585 13.2%122 #2945
Physical SciencesDomain #7,757 of 10,670 5.1%177 #4054
Health SciencesDomain #7,508 of 9,902 7.9%87 #6241
Social SciencesField #4,863 of 5,988 14.8%62 #3234
MedicineField #7,054 of 8,541 7.0%72 #6160
EngineeringField #5,305 of 5,901 2.5%60 #2890

Each strip is that field's whole ranked pool, with the notch where Jerusalem College of Technology 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 of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022-now. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Social Sciences#2,945 #5,391
  2. Physical Sciences#4,054 #7,757
  3. Health Sciences#6,241 #7,508
  4. Social Sciences#3,234 #4,863
  5. Medicine#6,160 #7,054
  6. Engineering#2,890 #5,305
all time2022-now, better2022-now, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

Which fields of science does Jerusalem College of Technology work in?

In 2022-now, 43% of research at Jerusalem College of Technology is in Physical Sciences, 30% in Social Sciences. Its largest fields are Medicine (17%), Social Sciences (15%), Computer Science (15%).

Physical Sciences: 205 fractional works · 42.9% of its workComputer Science: 70 fractional works · 14.6% of its workArtificial Intelligence: 30 fractional works · 6.3% of its workComputer Networks and Communications: 10 fractional works · 2.0% of its workInformation Systems: 7 fractional works · 1.5% of its workComputational Theory and Mathematics: 6 fractional works · 1.3% of its workComputer Vision and Pattern Recognition: 6 fractional works · 1.3% of its workComputer Science Applications: 4 fractional works · 0.9% of its workSignal Processing: 3 fractional works · 0.6% of its workHuman-Computer Interaction: 2 fractional works · 0.3% of its workHardware and Architecture: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.2% of its workEngineering: 69 fractional works · 14.4% of its workElectrical and Electronic Engineering: 26 fractional works · 5.5% of its workBiomedical Engineering: 13 fractional works · 2.7% of its workIndustrial and Manufacturing Engineering: 5 fractional works · 1.1% of its workAerospace Engineering: 5 fractional works · 1.0% of its workMedia Technology: 3 fractional works · 0.7% of its workControl and Systems Engineering: 3 fractional works · 0.5% of its workComputational Mechanics: 3 fractional works · 0.5% of its workMechanical Engineering: 2 fractional works · 0.5% of its workBuilding and Construction: 2 fractional works · 0.5% of its workCivil and Structural Engineering: 2 fractional works · 0.5% of its workMechanics of Materials: 2 fractional works · 0.4% of its workSmaller subfields together: 2 fractional works · 0.5% of its workPhysics and Astronomy: 30 fractional works · 6.2% of its workAstronomy and Astrophysics: 13 fractional works · 2.7% of its workAtomic and Molecular Physics, and Optics: 9 fractional works · 1.9% of its workStatistical and Nonlinear Physics: 4 fractional works · 0.8% of its workNuclear and High Energy Physics: 2 fractional works · 0.5% of its workSmaller subfields together: 1 fractional works · 0.3% of its workMathematics: 15 fractional works · 3.2% of its workGeometry and Topology: 3 fractional works · 0.7% of its workApplied Mathematics: 2 fractional works · 0.5% of its workTheoretical Computer Science: 2 fractional works · 0.5% of its workModeling and Simulation: 2 fractional works · 0.4% of its workAlgebra and Number Theory: 2 fractional works · 0.4% of its workMathematical Physics: 2 fractional works · 0.3% of its workDiscrete Mathematics and Combinatorics: 1 fractional works · 0.2% of its workStatistics and Probability: 1 fractional works · 0.2% of its workEnvironmental Science: 7 fractional works · 1.4% of its workGlobal and Planetary Change: 2 fractional works · 0.4% of its workHealth, Toxicology and Mutagenesis: 2 fractional works · 0.3% of its workManagement, Monitoring, Policy and Law: 1 fractional works · 0.2% of its workSmaller subfields together: 2 fractional works · 0.4% of its workEarth and Planetary Sciences: 6 fractional works · 1.2% of its workOceanography: 4 fractional works · 0.8% of its workSmaller subfields together: 2 fractional works · 0.4% of its workMaterials Science: 5 fractional works · 1.0% of its workMaterials Chemistry: 3 fractional works · 0.7% of its workSmaller subfields together: 2 fractional works · 0.4% of its workEnergy: 3 fractional works · 0.6% of its workRenewable Energy, Sustainability and the Environment: 2 fractional works · 0.4% of its workEnergy Engineering and Power Technology: 1 fractional works · 0.2% of its workChemistry: 2 fractional works · 0.4% of its workChemical Engineering: 0 fractional works · 0.0% of its workSocial Sciences: 144 fractional works · 30.2% of its workSocial Sciences: 73 fractional works · 15.3% of its workSociology and Political Science: 22 fractional works · 4.7% of its workEducation: 19 fractional works · 4.1% of its workHealth: 8 fractional works · 1.6% of its workDemography: 6 fractional works · 1.3% of its workPolitical Science and International Relations: 6 fractional works · 1.2% of its workCommunication: 4 fractional works · 0.9% of its workSafety Research: 3 fractional works · 0.7% of its workLaw: 2 fractional works · 0.4% of its workGender Studies: 1 fractional works · 0.2% of its workSmaller subfields together: 2 fractional works · 0.4% of its workPsychology: 35 fractional works · 7.4% of its workClinical Psychology: 19 fractional works · 4.0% of its workSocial Psychology: 8 fractional works · 1.7% of its workExperimental and Cognitive Psychology: 4 fractional works · 0.9% of its workDevelopmental and Educational Psychology: 2 fractional works · 0.4% of its workSmaller subfields together: 2 fractional works · 0.3% of its workBusiness, Management and Accounting: 11 fractional works · 2.3% of its workManagement Information Systems: 3 fractional works · 0.6% of its workStrategy and Management: 3 fractional works · 0.6% of its workOrganizational Behavior and Human Resource Management: 2 fractional works · 0.4% of its workManagement of Technology and Innovation: 1 fractional works · 0.3% of its workAccounting: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.2% of its workArts and Humanities: 9 fractional works · 2.0% of its workPhilosophy: 4 fractional works · 0.8% of its workLanguage and Linguistics: 2 fractional works · 0.3% of its workHistory and Philosophy of Science: 1 fractional works · 0.3% of its workSmaller subfields together: 3 fractional works · 0.6% of its workDecision Sciences: 8 fractional works · 1.7% of its workManagement Science and Operations Research: 5 fractional works · 1.0% of its workInformation Systems and Management: 2 fractional works · 0.4% of its workSmaller subfields together: 1 fractional works · 0.3% of its workEconomics, Econometrics and Finance: 7 fractional works · 1.6% of its workEconomics and Econometrics: 5 fractional works · 1.1% of its workFinance: 2 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workHealth Sciences: 100 fractional works · 20.9% of its workMedicine: 81 fractional works · 17.0% of its workPublic Health, Environmental and Occupational Health: 14 fractional works · 2.8% of its workOncology: 10 fractional works · 2.0% of its workPediatrics, Perinatology and Child Health: 8 fractional works · 1.7% of its workEpidemiology: 6 fractional works · 1.2% of its workRadiology, Nuclear Medicine and Imaging: 5 fractional works · 1.1% of its workObstetrics and Gynecology: 5 fractional works · 0.9% of its workCardiology and Cardiovascular Medicine: 4 fractional works · 0.9% of its workSurgery: 3 fractional works · 0.7% of its workOphthalmology: 3 fractional works · 0.6% of its workPhysiology: 3 fractional works · 0.6% of its workPsychiatry and Mental health: 3 fractional works · 0.6% of its workHealth Informatics: 2 fractional works · 0.5% of its workPulmonary and Respiratory Medicine: 2 fractional works · 0.5% of its workInfectious Diseases: 1 fractional works · 0.3% of its workNeurology: 1 fractional works · 0.2% of its workRheumatology: 1 fractional works · 0.2% of its workFamily Practice: 1 fractional works · 0.2% of its workEndocrinology, Diabetes and Metabolism: 1 fractional works · 0.2% of its workSmaller subfields together: 8 fractional works · 1.6% of its workHealth Professions: 15 fractional works · 3.2% of its workGeneral Health Professions: 8 fractional works · 1.8% of its workEmergency Medical Services: 2 fractional works · 0.4% of its workRadiological and Ultrasound Technology: 2 fractional works · 0.3% of its workSmaller subfields together: 3 fractional works · 0.7% of its workNursing: 3 fractional works · 0.6% of its workResearch and Theory: 2 fractional works · 0.5% of its workSmaller subfields together: 1 fractional works · 0.2% of its workDentistry: 1 fractional works · 0.1% of its workLife Sciences: 28 fractional works · 5.9% of its workBiochemistry, Genetics and Molecular Biology: 14 fractional works · 2.9% of its workMolecular Biology: 6 fractional works · 1.3% of its workGenetics: 3 fractional works · 0.6% of its workBiophysics: 3 fractional works · 0.5% of its workSmaller subfields together: 2 fractional works · 0.4% of its workNeuroscience: 9 fractional works · 1.9% of its workCognitive Neuroscience: 6 fractional works · 1.3% of its workCellular and Molecular Neuroscience: 1 fractional works · 0.2% of its workSmaller subfields together: 2 fractional works · 0.4% of its workImmunology and Microbiology: 3 fractional works · 0.5% of its workImmunology: 2 fractional works · 0.5% of its workSmaller subfields together: 0 fractional works · 0.1% of its workAgricultural and Biological Sciences: 2 fractional works · 0.4% of its workPharmacology, Toxicology and Pharmaceutics: 1 fractional works · 0.1% of its workALL ITS WORKJerusalem Collegeof Technology478fractional works, 2022-now
Life Sciences6%Physical Sciences43%Health Sciences21%Social Sciences30%

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 25 fields, with their numbers
    1. Computer Science7014.6%
    2. Engineering6914.4%
    3. Physics and Astronomy306.2%
    4. Mathematics153.2%
    5. Environmental Science71.4%
    6. Earth and Planetary Sciences61.2%
    7. Materials Science51.0%
    8. Energy30.6%
    9. Chemistry20.4%
    10. Chemical Engineering00.0%
    1. Social Sciences7315.3%
    2. Psychology357.4%
    3. Business, Management and Accounting112.3%
    4. Arts and Humanities92.0%
    5. Decision Sciences81.7%
    6. Economics, Econometrics and Finance71.6%
    1. Medicine8117.0%
    2. Health Professions153.2%
    3. Nursing30.6%
    4. Dentistry10.1%
    1. Biochemistry, Genetics and Molecular Biology142.9%
    2. Neuroscience91.9%
    3. Immunology and Microbiology30.5%
    4. Agricultural and Biological Sciences20.4%
    5. Pharmacology, Toxicology and Pharmaceutics10.1%
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: 0.09× its world share, 2 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.54× its world share, 14 worksBiochemistry, Geneti…Immunology and Microbiology: 0.53× its world share, 2 worksImmunology and Micro…Neuroscience: 1.16× its world share, 9 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.42× its world share, 1 worksPharmacology, Toxico…Chemical Engineering: 0.13× its world share, 0 worksChemical EngineeringChemistry: 0.24× its world share, 2 worksChemistryComputer Science: 1.88× its world share, 70 worksComputer ScienceEarth and Planetary Sciences: 0.76× its world share, 6 worksEarth and Planetary …Energy: 0.66× its world share, 3 worksEnergyEngineering: 0.96× its world share, 69 worksEngineeringEnvironmental Science: 0.28× its world share, 7 worksEnvironmental ScienceMaterials Science: 0.29× its world share, 5 worksMaterials ScienceMathematics: 2.68× its world share, 15 worksMathematicsPhysics and Astronomy: 2.78× its world share, 30 worksPhysics and AstronomyDentistry: 0.22× its world share, 0 worksDentistryHealth Professions: 1.20× its world share, 15 worksHealth ProfessionsMedicine: 0.88× its world share, 81 worksMedicineNursing: 1.33× its world share, 3 worksNursingArts and Humanities: 0.69× its world share, 10 worksArts and HumanitiesBusiness, Management and Accounting: 0.70× its world share, 11 worksBusiness, Management…Decision Sciences: 1.73× its world share, 8 worksDecision SciencesEconomics, Econometrics and Finance: 0.73× its world share, 8 worksEconomics, Econometr…Psychology: 2.43× its world share, 35 worksPsychologySocial Sciences: 1.21× its world share, 73 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Physics and Astronomy, 2.8×. Every wedge is a field page.

All 25 fields, with their numbers
  1. Physics and Astronomy2.78×30 works
  2. Mathematics2.68×15 works
  3. Psychology2.43×35 works
  4. Computer Science1.88×70 works
  5. Decision Sciences1.73×8 works
  6. Nursing1.33×3 works
  7. Social Sciences1.21×73 works
  8. Health Professions1.20×15 works
  9. Neuroscience1.16×9 works
  10. Engineering0.96×69 works
  11. Medicine0.88×81 works
  12. Earth and Planetary Sciences0.76×6 works
  13. Economics, Econometrics and Finance0.73×8 works
  14. Business, Management and Accounting0.70×11 works
  15. Arts and Humanities0.69×10 works
  16. Energy0.66×3 works
  17. Biochemistry, Genetics and Molecular Biology0.54×14 works
  18. Immunology and Microbiology0.53×2 works
  19. Pharmacology, Toxicology and Pharmaceutics0.42×1 works
  20. Materials Science0.29×5 works
  21. Environmental Science0.28×7 works
  22. Chemistry0.24×2 works
  23. Dentistry0.22×0 works
  24. Chemical Engineering0.13×0 works
  25. Agricultural and Biological Sciences0.09×2 works

Who are the top researchers at Jerusalem College of Technology?

Ranked on the quality score, D. N. Chester, Raaya Alon and Adi Finkelstein lead among researchers whose main affiliation is Jerusalem College of Technology.

  1. 1 D. N. Chester Israel · #737,388 worldwide 1.6k citations · 45 works
  2. 2 Raaya Alon Israel · #840,680 worldwide 204 citations · 36 works
  3. 3 Adi Finkelstein Israel · #1,023,955 worldwide 446 citations · 58 works
  4. 4 Chedva Levin Israel · #1,058,093 worldwide 241 citations · 20 works
  5. 5 Zvika Orr Israel · #1,224,661 worldwide 412 citations · 51 works
  6. 6 Meier Schwarz Israel · #1,722,586 worldwide 305 citations · 22 works
  7. 7 Eliyahu M. Heifetz Israel · #1,869,726 worldwide 390 citations · 31 works
  8. 8 Anat Romem Israel · #2,064,453 worldwide 267 citations · 30 works
  9. 9 Ronit Pinchas‐Mizrachi Israel · #2,069,292 worldwide 407 citations · 39 works
  10. 10 Avi Kay Israel · #2,111,265 worldwide 341 citations · 40 works
All ranked researchers at Jerusalem College of Technology

What are the most cited papers from Jerusalem College of Technology?

The most cited paper from Jerusalem College of Technology is "The human tumor microbiome is composed of tumor type–specific intracellular bacteria" (Deborah Nejman et al., 2020), with 2,523 citations. Next come "Association of cardiac troponin, CK-MB, and postoperative myocardial ischemia with long-term survival after major vascular surgery" (493) and "Conductive nanomaterials for 2D and 3D printed flexible electronics" (472).

Most cited papers
#PaperReleasedCitations
1 The human tumor microbiome is composed of tumor type–specific intracellular bacteria Deborah Nejman et al. · Science Open access 28 May 2020 2,523
2 Association of cardiac troponin, CK-MB, and postoperative myocardial ischemia with long-term survival after major vascular surgery Giora Landesberg, Vadim Shatz, Inna Akopnik et al. · Journal of the American College of Cardiology Open access Nov 2003 493
3 Conductive nanomaterials for 2D and 3D printed flexible electronics Alexander L. Kamyshny, Shlomo Magdassi · Chemical Society Reviews Review 20 Dec 2018 472
4 Pulse oximetry: fundamentals and technology update Meir Nitzan, Ayal Romem, Robert I. Koppel · Medical Devices Evidence and Research Open access Jul 2014 445
5 Sonochemical Deposition of Silver Nanoparticles on Silica Spheres Vilas Ganpat Pol, Divesh Narayan Srivastava, Oleg Palchik et al. · Langmuir 3 Mar 2002 427
All 60 most cited papers, with filters and sorting

Which keywords describe research at Jerusalem College of Technology?

By fractional works in 2022-now, weighted toward what it does more of than the world: Mental Health, Machine Learning, Quantum Gravity, Relativity, Health Disparities, Frequency Conversion, Social Media and Raman Lasers.

▲ 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 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. Machine Learning28▲ 1.78×41 topics
  2. Mental Health22▲ 3.3×24 topics
  3. Deep Learning20▲ 1.21×41 topics
  4. Social Media15▲ 2.3×15 topics
  5. Quantum Gravity11▲ 27×4 topics
  6. Relativity10▲ 71×2 topics
  7. Health Disparities9▲ 7.2×6 topics
  8. Frequency Conversion9▲ 43×3 topics
  9. Metabolic Syndrome8▲ 2.1×11 topics
  10. Raman Lasers8▲ 16×2 topics
  11. Gender Differences8▲ 4.2×12 topics
  12. Israel8▲ 47×2 topics
  13. Social Support8▲ 2.9×9 topics
  14. Psychological Adjustment7▲ 11×5 topics
  15. Resilience7▲ 3.1×7 topics
  16. General Covariance7▲ 119×1 topic
  17. Unified Field Theories7▲ 119×1 topic
  18. Biosensors7▲ 2.9×6 topics
  19. Health7▲ 3.5×5 topics
  20. Well-being7▲ 3.6×9 topics
  21. Religion6▲ 2.9×7 topics
  22. STEM Education6▲ 3.0×7 topics
  23. Discrimination6▲ 6.3×4 topics
  24. Trauma6▲ 6.1×6 topics
  25. Crystal Growth6▲ 4.4×2 topics
  26. Solid-State Lasers6▲ 77×1 topic
  27. Ytterbium6▲ 77×1 topic
  28. End-of-Life Care6▲ 10×4 topics
  29. Coping Strategies5▲ 4.5×2 topics
  30. Text Classification5▲ 7.0×3 topics
  31. Emotion Recognition5▲ 5.5×3 topics
  32. Spirituality5▲ 9.8×3 topics
  33. Optical Modulators5▲ 6.8×3 topics
  34. Dark Energy4▲ 14×2 topics
  35. Coping4▲ 18×2 topics
  36. Ethnic Identity4▲ 8.0×2 topics
  37. Mathematics Education4▲ 19×2 topics
  38. Community4▲ 7.4×3 topics
  39. General Relativity4▲ 13×2 topics
  40. Palestine4▲ 16×2 topics

Which research topics does Jerusalem College of Technology publish most on?

By volume in 2022-now: Relativity and Gravitational Theory, Solid State Laser Technologies, Religion, Spirituality, and Psychology and Cosmology and Gravitation Theories.

Relativity and Gravitati…7Relativity and Gravitational Theory: 7 fractional worksSolid State Laser Techno…6Solid State Laser Technologies: 6 fractional worksReligion, Spirituality, and Psychology: 4 fractional worksCosmology and Gravitation Theories: 4 fractional worksFamily and Disability Su…4Family and Disability Support Research: 4 fractional worksJewish Identity and Society: 4 fractional worksJewish and Middle Eastern Studies: 4 fractional worksTopic Modeling4Topic Modeling: 4 fractional worksGlobal Cancer Incidence and Screening: 4 fractional worksCancer Risks and Factors: 4 fractional works
Astronomy and AstrophysicsElectrical and Electronic EngineeringHealthClinical Psychology4 others

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

  1. 1 Relativity and Gravitational Theory Astronomy and Astrophysics 7 works
  2. 2 Solid State Laser Technologies Electrical and Electronic Engineering 6 works
  3. 3 Religion, Spirituality, and Psychology Health 4 works
  4. 4 Cosmology and Gravitation Theories Astronomy and Astrophysics 4 works
  5. 5 Family and Disability Support Research Clinical Psychology 4 works
  6. 6 Jewish Identity and Society Demography 4 works
  7. 7 Jewish and Middle Eastern Studies Sociology and Political Science 4 works
  8. 8 Topic Modeling Artificial Intelligence 4 works
  9. 9 Global Cancer Incidence and Screening Oncology 4 works
  10. 10 Cancer Risks and Factors Oncology 4 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 available36.7%not open63.3%

World: 40% of research is openly available.

with international co-authors19.9%domestic only80.1%

World: 18% is written across borders.

How has Jerusalem College of Technology's research output changed?

Output in 2022-2025 was 14% 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 Jerusalem College of Technology as a percentage of every work published that year, 0.0018% in 2024.

still counting0.0020%0.0040%Jerusalem College of Technology0.0023% in 202519801990200020102020

Fractional works of Jerusalem College of Technology over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting5%10%15%Jerusalem College of Technology10.3% in 2025all institutions10.0% in 2025200020102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 11.7% in 1998.

Other research institutions in Jerusalem

All research institutions in Jerusalem

Share Jerusalem College of Technology's ranking

Jerusalem College of Technology on Science Explorer

A card with Jerusalem College of Technology's standing and the fields it leads in, for a post or a slide. A link to this page previews as the same card.

Download the card

1200 × 630 PNG, sized for social posts, drawn from the latest snapshot.

Badges for a website1Each links back here and updates with every snapshot

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners have tabs of their own, above.

Discussion

Ask a question or share a note about Jerusalem College of Technology. Keep it to the research: no personal attacks, advertising or links. Any reader can report a post, which collapses it for everyone until it is opened.