| 1 | Genetic algorithms | 26 | 64.8K | 42 | 1 |
| 1 | Evolutionary Computation | 26 | 64.8K | 62 | 1 |
| 3 | Chemistry | 1,208 | 52.0K | 337 | 408 |
| 4 | Physics | 1,021 | 28.5K | 407 | 717 |
| 5 | Materials | 838 | 25.7K | 182 | 292 |
| 6 | Artificial Intelligence | 79 | 18.3K | 575 | 91 |
| 7 | biological evolution | 17 | 16.9K | 786 | 101 |
| 8 | Solid State Physics | 704 | 16.8K | 150 | 219 |
| 9 | Evolution | 14 | 16.7K | 796 | 80 |
| 10 | Condensed Matter | 679 | 16.4K | 140 | 242 |
| 11 | Materials Science | 543 | 15.5K | 143 | 249 |
| 12 | Chemical Engineering | 474 | 14.6K | 187 | 279 |
| 13 | Nanotechnology | 317 | 10.6K | 345 | 492 |
| 14 | Biocompatible Materials | 196 | 10.4K | 334 | 340 |
| 15 | Nuclear Physics | 627 | 10.3K | 343 | 514 |
| 16 | Catalysis | 300 | 9.9K | 258 | 374 |
| 17 | Manufacturing Processes | 207 | 9.7K | 85 | 41 |
| 18 | Organic Chemistry | 274 | 8.5K | 92 | 136 |
| 19 | Polymers | 305 | 8.4K | 338 | 380 |
| 20 | Biology | 189 | 7.8K | 997 | 1,255 |
| 21 | Colloids | 252 | 7.7K | 246 | 321 |
| 22 | Mathematics | 527 | 7.6K | 332 | 316 |
| 23 | Statistics | 240 | 7.2K | 118 | 150 |
| 24 | Biochemistry | 240 | 7.1K | 1,074 | 1,135 |
| 25 | Surface Chemistry | 200 | 6.1K | 316 | 368 |
| 26 | Fluid Mechanics | 177 | 6.1K | 44 | 46 |
| 27 | Statistical physics | 303 | 6.0K | 268 | 376 |
| 28 | mass transfer | 181 | 5.8K | 50 | 76 |
| 29 | Geophysics | 171 | 5.8K | 418 | 433 |
| 30 | polymerization | 219 | 5.6K | 359 | 403 |
| 31 | Nanostructured Materials | 197 | 5.3K | 220 | 349 |
| 32 | Metallurgy | 260 | 4.9K | 88 | 192 |
| 33 | Quantum Gravity | 253 | 4.9K | 255 | 414 |
| 34 | Optics | 379 | 4.6K | 248 | 406 |
| 35 | Science | 143 | 4.6K | 1,287 | 1,713 |
| 36 | Industrial Engineering | 148 | 4.5K | 64 | 81 |
| 37 | Composite Materials | 152 | 4.5K | 222 | 332 |
| 38 | Renewable Energy Sources | 65 | 4.4K | 324 | 367 |
| 39 | energy conservation | 50 | 4.3K | 300 | 227 |
| 40 | Numerical Analysis | 181 | 4.2K | 47 | 57 |
| 41 | Engineering | 247 | 4.2K | 168 | 248 |
| 42 | coal | 95 | 4.1K | 100 | 99 |
| 43 | Image Processing | 61 | 4.1K | 340 | 224 |
| 44 | Pollution | 105 | 4.0K | 801 | 961 |
| 45 | Biomedical Engineering | 170 | 4.0K | 458 | 614 |
| 46 | Nonlinear Dynamics | 178 | 3.7K | 147 | 229 |
| 47 | Electrical Engineering | 178 | 3.7K | 220 | 168 |
| 48 | Solid State Chemistry | 191 | 3.6K | 105 | 154 |
| 49 | Mechanical Engineering | 131 | 3.5K | 154 | 105 |
| 50 | Computer Vision | 17 | 3.5K | 381 | 134 |
| 51 | Biochemical Engineering | 75 | 3.4K | 543 | 698 |
| 52 | Wireless Communication Systems | 86 | 3.4K | 295 | 239 |
| 53 | Computer Graphics | 13 | 3.4K | 775 | 151 |
| 54 | Production Engineering | 107 | 3.4K | 126 | 81 |
| 55 | Environment | 57 | 3.3K | 1,029 | 1,084 |
| 56 | nanoscience | 93 | 3.3K | 371 | 513 |
| 57 | Physical Chemistry | 132 | 3.3K | 172 | 319 |
| 58 | Electronics | 327 | 3.3K | 139 | 391 |
| 59 | Metals | 201 | 3.2K | 100 | 261 |
| 60 | Earthquake Engineering | 115 | 3.1K | 111 | 155 |
| 61 | Structural dynamics | 74 | 3.0K | 90 | 111 |
| 62 | Environmental Engineering | 103 | 3.0K | 382 | 579 |
| 63 | Bioorganic chemistry | 75 | 3.0K | 382 | 352 |
| 64 | Technology | 163 | 3.0K | 288 | 450 |
| 65 | Environmental monitoring | 57 | 3.0K | 685 | 603 |
| 66 | Biotechnology | 117 | 2.9K | 800 | 1,172 |
| 67 | Heat Exchangers | 37 | 2.8K | 191 | 85 |
| 68 | Biophysics | 85 | 2.8K | 1,080 | 1,026 |
| 69 | Electromagnetism | 40 | 2.8K | 151 | 42 |
| 70 | Carbon | 31 | 2.8K | 247 | 179 |
| 71 | Boundary Value Problems | 38 | 2.8K | 92 | 21 |
| 72 | Antenna Arrays | 37 | 2.7K | 79 | 21 |
| 73 | Signal Processing | 113 | 2.7K | 299 | 414 |
| 74 | Electrochemistry | 158 | 2.7K | 520 | 631 |
| 75 | Environmental Health | 52 | 2.6K | 1,188 | 1,018 |
| 76 | Power Electronics | 69 | 2.6K | 133 | 160 |
| 77 | Microwaves | 126 | 2.6K | 97 | 113 |
| 78 | Crystal growth | 89 | 2.6K | 29 | 45 |
| 79 | Ecology | 57 | 2.5K | 1,427 | 1,485 |
| 80 | Natural history | 19 | 2.5K | 1,170 | 1,332 |
| 81 | Atmospheric Physics | 51 | 2.3K | 306 | 307 |
| 82 | Combustion | 86 | 2.3K | 118 | 145 |
| 83 | Molecular Biology | 87 | 2.3K | 1,519 | 1,802 |
| 84 | Spectrum analysis | 126 | 2.2K | 616 | 933 |
| 85 | environmental pollution | 64 | 2.2K | 846 | 994 |
| 86 | Water | 45 | 2.1K | 519 | 590 |
| 87 | Organometallic compounds | 72 | 2.0K | 97 | 130 |
| 88 | Bioengineering | 66 | 2.0K | 780 | 1,012 |
| 89 | Engineering Geology | 64 | 2.0K | 159 | 185 |
| 90 | Operations Research | 84 | 2.0K | 261 | 372 |
| 91 | Green Chemistry | 39 | 1.9K | 361 | 379 |
| 92 | Geomorphology | 33 | 1.9K | 309 | 237 |
| 93 | Energy Policy | 37 | 1.9K | 619 | 606 |
| 94 | Research | 64 | 1.8K | 1,816 | 1,794 |
| 95 | Fluid Dynamics | 83 | 1.8K | 85 | 119 |
| 96 | Building Materials | 36 | 1.8K | 430 | 408 |
| 97 | Telecommunication | 203 | 1.8K | 157 | 483 |
| 98 | Semiconductors | 86 | 1.8K | 172 | 162 |
| 99 | Atmospheric Chemistry | 32 | 1.8K | 238 | 256 |
| 100 | Soil Mechanics | 75 | 1.7K | 118 | 189 |
| 101 | Astronomy | 75 | 1.7K | 661 | 825 |
| 102 | Hydrology | 48 | 1.7K | 469 | 449 |
| 103 | actuators | 50 | 1.7K | 386 | 420 |
| 103 | transducers | 50 | 1.7K | 386 | 420 |
| 105 | Analytical Chemistry | 65 | 1.7K | 1,022 | 1,122 |
| 106 | environmental protection | 58 | 1.6K | 552 | 756 |
| 107 | Automation | 66 | 1.6K | 347 | 529 |
| 107 | biopolymers | 51 | 1.6K | 176 | 188 |
| 109 | Sustainable Engineering | 32 | 1.6K | 342 | 302 |
| 109 | Soft Condensed Matter | 60 | 1.6K | 147 | 173 |
| 111 | Solar Energy | 59 | 1.6K | 129 | 258 |
| 112 | Statistical Mechanics | 52 | 1.6K | 71 | 66 |
| 113 | Detectors | 40 | 1.6K | 224 | 131 |
| 114 | Optical materials | 57 | 1.6K | 519 | 713 |
| 115 | Mathematical Physics | 79 | 1.5K | 520 | 549 |
| 116 | Organometallic chemistry | 81 | 1.5K | 130 | 157 |
| 117 | Biomass Energy | 21 | 1.5K | 848 | 660 |
| 118 | machinery | 39 | 1.5K | 70 | 40 |
| 119 | pottery | 79 | 1.5K | 84 | 172 |
| 120 | Structural Engineering | 53 | 1.5K | 295 | 304 |
| 121 | Membranes | 32 | 1.4K | 475 | 478 |
| 122 | Ceramics | 50 | 1.4K | 198 | 205 |
| 123 | Photochemistry | 61 | 1.4K | 123 | 233 |
| 124 | Microbiology | 33 | 1.4K | 1,876 | 1,801 |
| 125 | Glass | 47 | 1.4K | 146 | 184 |
| 126 | Photobiology | 55 | 1.3K | 57 | 116 |
| 127 | Water pollution | 31 | 1.3K | 799 | 778 |
| 128 | Geology | 61 | 1.3K | 704 | 776 |
| 129 | health planning | 68 | 1.3K | 192 | 257 |
| 130 | Soil dynamics | 37 | 1.3K | 57 | 53 |
| 131 | India | 196 | 1.3K | 15 | 20 |
| 132 | Rock Mechanics | 46 | 1.3K | 140 | 193 |
| 133 | Physical organic chemistry | 62 | 1.3K | 108 | 166 |
| 134 | Metallography | 49 | 1.3K | 61 | 74 |
| 135 | Bioinorganic chemistry | 65 | 1.2K | 146 | 242 |
| 136 | Hydraulic Engineering | 59 | 1.2K | 104 | 154 |
| 137 | Magnetohydrodynamics | 20 | 1.2K | 77 | 48 |
| 138 | probabilities | 62 | 1.2K | 193 | 148 |
| 139 | Tribology | 46 | 1.2K | 155 | 163 |
| 140 | Water quality management | 27 | 1.1K | 431 | 246 |
| 141 | Developmental Biology | 27 | 1.1K | 548 | 622 |
| 142 | Astrophysics | 88 | 1.1K | 722 | 1,109 |
| 143 | Planets | 31 | 1.1K | 475 | 534 |
| 144 | Earth Sciences | 54 | 1.1K | 695 | 855 |
| 145 | Radio | 39 | 1.1K | 336 | 420 |
| 146 | Ceramic materials | 39 | 1.1K | 197 | 218 |
| 147 | Energy Storage | 31 | 1.1K | 248 | 298 |
| 148 | mathematical analysis | 114 | 1.0K | 231 | 413 |
| 149 | Energy Conversion | 34 | 1.0K | 266 | 551 |
| 150 | Engineering Mathematics | 49 | 1.0K | 266 | 273 |
| 151 | Photonics | 59 | 1.0K | 345 | 631 |
| 152 | biological factors | 21 | 1.0K | 582 | 402 |
| 153 | Nanochemistry | 45 | 1.0K | 83 | 86 |
| 154 | Molecular structure | 58 | 1.0K | 325 | 576 |
| 155 | natural disasters | 16 | 1.0K | 389 | 219 |
| 156 | Meteorology | 37 | 1.0K | 542 | 714 |
| 157 | Ocean Engineering | 34 | 1.0K | 444 | 448 |
| 158 | fuel cells | 27 | 978 | 327 | 447 |
| 159 | Geochemistry | 43 | 976 | 512 | 660 |
| 160 | Molecules | 89 | 957 | 151 | 360 |
| 161 | Systems Engineering | 51 | 952 | 298 | 486 |
| 162 | Medical genetics | 13 | 934 | 1,012 | 874 |
| 163 | System analysis | 54 | 932 | 368 | 537 |
| 164 | Radio waves | 20 | 927 | 304 | 260 |
| 165 | sanitation | 13 | 921 | 683 | 692 |
| 165 | synthesis | 59 | 921 | 41 | 42 |
| 167 | Environmental Management | 24 | 917 | 954 | 1,114 |
| 168 | Control Theory | 34 | 916 | 447 | 402 |
| 169 | Environmental Policy | 19 | 886 | 1,197 | 1,205 |
| 170 | Robotics | 41 | 869 | 330 | 425 |
| 171 | computer networks | 41 | 867 | 523 | 695 |
| 172 | Economics | 50 | 857 | 1,077 | 1,152 |
| 173 | management | 52 | 854 | 751 | 1,261 |
| 174 | Nonlinear mechanics | 22 | 852 | 59 | 29 |
| 175 | Cell Biology | 24 | 837 | 1,316 | 1,501 |
| 175 | Fracture mechanics | 48 | 837 | 254 | 355 |
| 177 | Energy Consumption | 9 | 832 | 153 | 96 |
| 178 | Computational Fluid Dynamics | 43 | 826 | 41 | 88 |
| 179 | Biometrics | 15 | 820 | 427 | 259 |
| 180 | Radio wave propagation | 27 | 816 | 140 | 67 |
| 181 | Cytology | 27 | 793 | 1,309 | 1,535 |
| 182 | Nanoparticles | 42 | 792 | 303 | 616 |
| 183 | Medicine | 48 | 790 | 2,380 | 3,159 |
| 184 | Fuzzy systems | 24 | 780 | 355 | 167 |
| 185 | Plastics | 33 | 755 | 335 | 352 |
| 186 | Microelectronics | 52 | 752 | 317 | 700 |
| 186 | Computer-Aided Design | 22 | 752 | 315 | 252 |
| 188 | Rheology | 29 | 713 | 100 | 122 |
| 189 | microwave antennas | 24 | 712 | 40 | 20 |
| 190 | Machining | 21 | 702 | 7 | 2 |
| 191 | Nuclear Chemistry | 34 | 694 | 196 | 157 |
| 192 | Pharmacology | 23 | 693 | 1,798 | 1,772 |
| 193 | Environmental Geology | 17 | 692 | 565 | 458 |
| 194 | Magnetic Materials | 22 | 673 | 501 | 460 |
| 195 | Metallic Glasses | 11 | 666 | 174 | 83 |
| 196 | Multivariate Analysis | 20 | 657 | 109 | 111 |
| 197 | Pharmaceutical Technology | 16 | 656 | 592 | 497 |
| 198 | Molecular Spectroscopy | 37 | 655 | 335 | 459 |
| 199 | Meteorites | 22 | 651 | 333 | 467 |
| 200 | Psychology | 42 | 641 | 1,218 | 1,529 |
| 201 | Information Theory | 25 | 635 | 405 | 436 |
| 202 | vibration | 32 | 631 | 224 | 333 |
| 203 | Measurement | 21 | 626 | 360 | 297 |
| 204 | Cybernetics | 18 | 623 | 553 | 586 |
| 204 | Transportation | 31 | 623 | 413 | 580 |
| 206 | Neural circuitry | 30 | 620 | 468 | 709 |
| 207 | Microfabrication | 29 | 619 | 28 | 47 |
| 208 | Nanostructures | 35 | 618 | 380 | 780 |
| 209 | Computer Science | 25 | 617 | 524 | 378 |
| 210 | Simulation Methods | 25 | 613 | 121 | 105 |
| 211 | atmosphere | 15 | 588 | 235 | 197 |
| 212 | catalytic activity | 15 | 576 | 216 | 225 |
| 213 | lasers | 45 | 569 | 424 | 606 |
| 214 | miniaturization | 33 | 565 | 447 | 877 |
| 214 | Aging | 4 | 565 | 1,969 | 921 |
| 216 | Cell differentiation | 19 | 561 | 542 | 780 |
| 217 | Economic History | 42 | 557 | 777 | 982 |
| 218 | Remote Sensing | 52 | 550 | 142 | 309 |
| 219 | Quality Control | 15 | 540 | 581 | 528 |
| 220 | Differential Equations | 23 | 536 | 295 | 268 |
| 221 | atmospheric models | 7 | 534 | 411 | 309 |
| 222 | Smart Materials | 20 | 532 | 250 | 274 |
| 223 | Integrated Circuits | 35 | 528 | 95 | 42 |
| 224 | Ferroelectricity | 28 | 525 | 242 | 209 |
| 225 | Dynamics | 48 | 522 | 191 | 363 |
| 226 | Nonlinear functional analysis | 32 | 519 | 181 | 254 |
| 227 | pigments | 6 | 517 | 581 | 221 |
| 228 | Pharmaceutical Chemistry | 26 | 515 | 1,243 | 1,491 |
| 229 | proteins | 20 | 512 | 711 | 731 |
| 230 | Medical Laboratory Science | 30 | 506 | 504 | 933 |
| 231 | Paleoclimatology | 14 | 504 | 486 | 495 |
| 232 | Civil Engineering | 53 | 492 | 199 | 266 |
| 233 | Process Control | 17 | 486 | 275 | 513 |
| 234 | solar cells | 15 | 481 | 262 | 382 |
| 235 | Anatomy | 17 | 475 | 769 | 749 |
| 235 | Embryology | 17 | 475 | 564 | 722 |
| 235 | Growth | 15 | 475 | 451 | 633 |
| 238 | Public Health | 11 | 474 | 2,607 | 2,039 |
| 239 | Mineralogy | 29 | 471 | 412 | 549 |
| 240 | Structural design | 17 | 468 | 234 | 249 |
| 241 | Neurology | 12 | 461 | 2,151 | 2,013 |
| 242 | Luminescence | 28 | 454 | 251 | 311 |
| 243 | Social Psychology | 36 | 453 | 548 | 980 |
| 244 | Geriatrics | 2 | 450 | 2,770 | 1,035 |
| 245 | Hazardous waste | 14 | 444 | 293 | 495 |
| 246 | Computational Biology | 21 | 431 | 809 | 1,051 |
| 247 | air quality management | 12 | 427 | 135 | 139 |
| 248 | Developing countries | 32 | 426 | 503 | 873 |
| 249 | Nuclear Engineering | 50 | 424 | 266 | 394 |
| 249 | Paleoecology | 10 | 424 | 589 | 493 |
| 249 | Paleogeography | 10 | 424 | 498 | 457 |
| 252 | solar power | 13 | 422 | 264 | 389 |
| 253 | Production Management | 12 | 418 | 523 | 740 |
| 254 | plasticity | 12 | 413 | 129 | 203 |
| 255 | Surface-Active Agents | 9 | 412 | 554 | 491 |
| 255 | Surface properties | 9 | 412 | 597 | 540 |
| 257 | China | 11 | 406 | 1,486 | 1,035 |
| 258 | protein | 14 | 405 | 478 | 481 |
| 259 | Telecommunication Systems | 24 | 397 | 416 | 508 |
| 260 | Geotechnical Engineering | 22 | 395 | 136 | 193 |
| 261 | Psychiatry | 12 | 394 | 1,865 | 1,764 |
| 262 | Computational Chemistry | 26 | 390 | 90 | 299 |
| 263 | Human genetics | 6 | 389 | 1,111 | 1,458 |
| 263 | Asia | 19 | 389 | 923 | 808 |
| 265 | water resources | 8 | 387 | 116 | 57 |
| 266 | Experimental Design | 6 | 384 | 158 | 120 |
| 266 | Finite Element Method | 6 | 384 | 192 | 60 |
| 268 | Medical Physics | 6 | 379 | 1,043 | 731 |
| 269 | Aerosols | 11 | 378 | 224 | 195 |
| 270 | Project Management | 1 | 377 | 510 | 192 |
| 271 | Quantum electronics | 32 | 375 | 395 | 580 |
| 272 | micromechanics | 18 | 372 | 163 | 227 |
| 273 | Electromagnetic compatibility | 9 | 371 | 162 | 91 |
| 273 | radioactive waste | 6 | 371 | 502 | 524 |
| 273 | industrial waste | 6 | 371 | 531 | 527 |
| 276 | finance | 13 | 368 | 1,165 | 1,015 |
| 277 | International Finance | 9 | 367 | 999 | 774 |
| 278 | energy resources | 13 | 364 | 582 | 970 |
| 279 | color | 3 | 360 | 235 | 40 |
| 280 | Geodynamics | 13 | 353 | 410 | 487 |
| 281 | Functional Analysis | 34 | 352 | 285 | 494 |
| 282 | Nondestructive testing | 23 | 351 | 121 | 211 |
| 283 | Materials Engineering | 22 | 348 | 92 | 117 |
| 284 | marketing | 8 | 345 | 1,227 | 1,055 |
| 285 | Cytogenetics | 5 | 343 | 919 | 769 |
| 286 | cell physiology | 5 | 339 | 1,007 | 865 |
| 287 | emergency management | 4 | 338 | 579 | 262 |
| 288 | Adhesion | 10 | 335 | 247 | 172 |
| 288 | adhesives | 10 | 335 | 264 | 173 |
| 290 | Food | 5 | 331 | 2,368 | 1,742 |
| 291 | Geographic information systems | 22 | 330 | 222 | 307 |
| 292 | particles | 22 | 329 | 182 | 339 |
| 293 | Product Design | 24 | 326 | 128 | 149 |
| 294 | Environmental Chemistry | 8 | 323 | 1,233 | 1,309 |
| 295 | Environmental Law | 3 | 321 | 1,032 | 811 |
| 296 | Industrial Microbiology | 6 | 319 | 1,328 | 1,141 |
| 297 | Bioinformatics | 13 | 318 | 918 | 1,033 |
| 298 | water supply | 8 | 314 | 479 | 516 |
| 299 | clay | 7 | 312 | 470 | 464 |
| 300 | hazard mitigation | 10 | 311 | 365 | 380 |
| 301 | concrete | 4 | 304 | 815 | 659 |
| 302 | Environmental Toxicology | 5 | 303 | 1,870 | 1,500 |
| 303 | Nutrition | 4 | 297 | 3,049 | 2,199 |
| 304 | Transnational corporations | 3 | 295 | 391 | 114 |
| 304 | Fiber Optics | 26 | 295 | 246 | 395 |
| 306 | phase diagrams | 17 | 291 | 36 | 41 |
| 307 | Nuclear Energy | 29 | 288 | 220 | 354 |
| 308 | Atomic spectroscopy | 28 | 285 | 265 | 482 |
| 309 | Japan | 12 | 283 | 761 | 625 |
| 310 | Botany | 3 | 282 | 3,192 | 2,153 |
| 311 | enzymes | 20 | 280 | 483 | 824 |
| 312 | econometric models | 6 | 279 | 374 | 249 |
| 313 | gene therapy | 7 | 277 | 575 | 607 |
| 314 | Biomechanics | 7 | 273 | 808 | 683 |
| 315 | Multiphase Flow | 13 | 270 | 128 | 206 |
| 316 | Environmental pollutants | 5 | 267 | 1,743 | 1,410 |
| 317 | Industry | 2 | 265 | 255 | 159 |
| 318 | Toxicology | 6 | 263 | 2,936 | 2,598 |
| 318 | weather | 1 | 263 | 1,015 | 264 |
| 320 | Software Engineering | 9 | 259 | 556 | 510 |
| 320 | plant molecular biology | 2 | 259 | 1,610 | 1,116 |
| 320 | Plants | 2 | 259 | 2,217 | 1,263 |
| 323 | Magnetic Resonance Spectroscopy | 22 | 256 | 387 | 524 |
| 324 | Structural optimization | 9 | 253 | 163 | 187 |
| 324 | Cosmochemistry | 13 | 253 | 361 | 540 |
| 326 | infection | 12 | 252 | 668 | 911 |
| 327 | reasoning | 5 | 251 | 268 | 136 |
| 328 | Highway Engineering | 13 | 248 | 124 | 146 |
| 329 | Metabolism | 7 | 247 | 1,373 | 1,496 |
| 330 | Raman spectroscopy | 24 | 245 | 126 | 381 |
| 330 | Diet | 2 | 245 | 2,034 | 1,399 |
| 332 | Catalysts | 13 | 244 | 215 | 307 |
| 333 | nucleic acids | 12 | 243 | 783 | 1,130 |
| 334 | Brain | 6 | 240 | 1,628 | 1,492 |
| 335 | pollutants | 3 | 236 | 1,838 | 1,310 |
| 336 | Multimedia Systems | 13 | 234 | 808 | 878 |
| 336 | Information Science | 30 | 234 | 621 | 1,638 |
| 338 | environmental exposure | 2 | 233 | 2,182 | 1,254 |
| 339 | Granular materials | 13 | 230 | 142 | 299 |
| 339 | United States | 20 | 230 | 1,882 | 2,554 |
| 341 | Stochastic Processes | 15 | 227 | 286 | 337 |
| 342 | Information Technology | 7 | 226 | 1,625 | 1,400 |
| 343 | Industrial Ecology | 1 | 224 | 333 | 143 |
| 343 | human behavior | 4 | 224 | 1,979 | 1,860 |
| 345 | Quantum Optics | 24 | 223 | 213 | 415 |
| 346 | Optoelectronic devices | 24 | 221 | 161 | 285 |
| 346 | Sedimentary rocks | 3 | 221 | 630 | 368 |
| 348 | Sustainable Development | 13 | 220 | 821 | 1,374 |
| 348 | Chemical industry | 26 | 220 | 301 | 566 |
| 350 | organization | 2 | 218 | 979 | 629 |
| 350 | Laser Spectroscopy | 23 | 218 | 184 | 381 |
| 352 | Flexible manufacturing systems | 5 | 216 | 243 | 188 |
| 353 | Chemical analysis | 7 | 213 | 719 | 714 |
| 354 | extraterrestrial environment | 13 | 212 | 179 | 225 |
| 354 | astronomical phenomena | 13 | 212 | 160 | 200 |
| 356 | Turbulence | 8 | 210 | 116 | 93 |
| 356 | energy development | 10 | 210 | 310 | 602 |
| 358 | Virology | 4 | 209 | 2,003 | 1,895 |
| 359 | nuclear magnetic resonance | 20 | 206 | 370 | 527 |
| 360 | Algebra | 33 | 203 | 389 | 544 |
| 360 | Cosmology | 8 | 203 | 365 | 404 |
| 360 | nuclear astrophysics | 7 | 203 | 299 | 329 |
| 363 | Genetic therapy | 6 | 201 | 642 | 705 |
| 364 | Economic Development | 12 | 199 | 698 | 1,080 |
| 364 | Lightweight concrete | 1 | 199 | 704 | 481 |
| 366 | Endocrinology | 5 | 198 | 1,820 | 1,778 |
| 366 | Enzyme | 5 | 198 | 362 | 388 |
| 368 | Traffic Engineering | 7 | 197 | 216 | 298 |
| 369 | Bacteriology | 5 | 196 | 1,292 | 1,327 |
| 369 | Cancer | 7 | 196 | 1,651 | 1,877 |
| 371 | Optical Communications | 14 | 195 | 273 | 369 |
| 372 | Nanomedicine | 5 | 192 | 111 | 150 |
| 372 | Community Psychiatry | 5 | 192 | 654 | 617 |
| 372 | peptides | 13 | 192 | 233 | 341 |
| 375 | Data Mining | 5 | 191 | 768 | 659 |
| 376 | Light | 8 | 190 | 536 | 819 |
| 377 | Neurochemistry | 7 | 189 | 1,402 | 1,472 |
| 378 | Behavior | 3 | 188 | 2,700 | 2,260 |
| 379 | drugs | 4 | 187 | 1,589 | 1,208 |
| 380 | Technological Innovations | 6 | 186 | 697 | 691 |
| 381 | Mechatronics | 4 | 185 | 770 | 577 |
| 381 | Clinical Chemistry | 8 | 185 | 1,474 | 1,701 |
| 381 | Decision making | 9 | 185 | 766 | 906 |
| 384 | Quantum theory | 12 | 184 | 472 | 580 |
| 385 | Aerospace Engineering | 20 | 183 | 55 | 75 |
| 386 | Thermodynamics | 43 | 182 | 140 | 511 |
| 387 | Biomolecules | 3 | 179 | 443 | 373 |
| 388 | Radiation | 24 | 178 | 665 | 1,183 |
| 389 | Roads | 12 | 175 | 325 | 339 |
| 389 | commerce | 11 | 175 | 739 | 1,014 |
| 391 | Energy Harvesting | 4 | 173 | 370 | 528 |
| 392 | Transportation Engineering | 7 | 172 | 197 | 223 |
| 393 | Planetary Science | 11 | 170 | 219 | 248 |
| 394 | world | 3 | 169 | 694 | 674 |
| 395 | Biomimetic materials | 1 | 166 | 27 | 9 |
| 396 | Solitons | 9 | 165 | 620 | 756 |
| 396 | Fractals | 9 | 165 | 623 | 762 |
| 396 | Chaos | 9 | 165 | 620 | 756 |
| 399 | Industrial Statistics | 11 | 163 | 30 | 33 |
| 400 | Cognition | 11 | 162 | 875 | 1,153 |
| 401 | Photography | 96 | 160 | 199 | 270 |
| 402 | Sociology | 15 | 157 | 1,267 | 1,871 |
| 402 | Neuropsychology | 3 | 157 | 1,968 | 1,496 |
| 402 | Databases | 6 | 157 | 246 | 259 |
| 402 | Computational Complexity | 12 | 157 | 407 | 468 |
| 402 | Agriculture | 9 | 157 | 1,149 | 1,449 |
| 407 | Endocrine glands | 3 | 156 | 246 | 341 |
| 407 | Hormones | 3 | 156 | 1,060 | 928 |
| 409 | Industrial Design | 3 | 155 | 285 | 183 |
| 409 | Hydrodynamics | 8 | 155 | 330 | 457 |
| 409 | Sound | 9 | 155 | 548 | 571 |
| 409 | Development | 5 | 155 | 570 | 692 |
| 409 | impact | 8 | 155 | 157 | 274 |
| 414 | Heterocyclic compounds | 10 | 153 | 465 | 425 |
| 415 | Petroleum Engineering | 5 | 151 | 515 | 464 |
| 415 | Petrology | 11 | 151 | 530 | 737 |
| 415 | Natural resources | 7 | 151 | 446 | 613 |
| 415 | visualization | 23 | 151 | 433 | 573 |
| 419 | Neurophysiology | 3 | 150 | 2,305 | 1,950 |
| 419 | Fluorescence | 14 | 150 | 60 | 182 |
| 421 | Photogrammetry | 25 | 149 | 154 | 172 |
| 422 | Information Retrieval | 4 | 148 | 376 | 341 |
| 422 | Information visualization | 21 | 148 | 14 | 31 |
| 422 | Electrochemical Analysis | 10 | 148 | 899 | 1,177 |
| 422 | natural gas | 5 | 148 | 240 | 269 |
| 426 | carbon monoxide | 4 | 146 | 262 | 324 |
| 427 | Tourism | 5 | 144 | 1,308 | 1,451 |
| 427 | Shock Waves | 14 | 144 | 37 | 86 |
| 427 | internet | 14 | 144 | 634 | 1,182 |
| 430 | Swarm Intelligence | 2 | 143 | 399 | 244 |
| 430 | Brain damage | 1 | 143 | 647 | 272 |
| 432 | Internet of Things | 12 | 140 | 502 | 959 |
| 433 | Cognitive Radio Networks | 4 | 139 | 164 | 152 |
| 434 | Drug delivery systems | 10 | 138 | 801 | 1,330 |
| 435 | Anthropology | 2 | 136 | 1,738 | 936 |
| 435 | Social Change | 3 | 136 | 1,073 | 1,155 |
| 437 | Social Sciences | 8 | 134 | 2,154 | 2,053 |
| 437 | Intelligent Control Systems | 9 | 134 | 565 | 462 |
| 439 | Microstructure | 9 | 133 | 419 | 445 |
| 440 | Human-Computer Interaction | 5 | 132 | 1,171 | 1,211 |
| 440 | Economic Assistance | 3 | 132 | 686 | 691 |
| 442 | auditory perception | 6 | 131 | 266 | 350 |
| 442 | Immunogenetics | 1 | 131 | 834 | 445 |
| 442 | Communication | 9 | 131 | 1,166 | 1,517 |
| 445 | elasticity | 13 | 130 | 61 | 157 |
| 446 | Porous materials | 19 | 129 | 129 | 427 |
| 447 | Speech Perception | 5 | 128 | 244 | 301 |
| 448 | Microscopy | 14 | 127 | 526 | 861 |
| 449 | Organizational Behavior | 2 | 126 | 702 | 616 |
| 449 | Combinatorial chemistry | 3 | 126 | 671 | 712 |
| 451 | Mass Spectrometry | 2 | 125 | 1,240 | 821 |
| 452 | Seismology | 4 | 124 | 410 | 354 |
| 452 | Customer service | 1 | 124 | 148 | 12 |
| 454 | aerosol | 4 | 123 | 320 | 280 |
| 455 | Corporate Social Responsibility | 1 | 122 | 645 | 408 |
| 455 | environmental auditing | 1 | 122 | 668 | 411 |
| 457 | Enzyme inhibitors | 3 | 120 | 393 | 306 |
| 458 | Molecular Pharmacology | 8 | 119 | 461 | 831 |
| 458 | Plant physiology | 4 | 119 | 1,756 | 1,896 |
| 460 | Analytical Biochemistry | 5 | 117 | 1,321 | 1,312 |
| 460 | Securities | 5 | 117 | 187 | 307 |
| 462 | Oceanography | 5 | 116 | 1,232 | 1,338 |
| 462 | Climatology | 9 | 116 | 975 | 1,515 |
| 464 | Clinical Psychology | 2 | 115 | 1,285 | 1,014 |
| 464 | Food additives | 3 | 115 | 1,100 | 1,130 |
| 466 | Genetics | 10 | 114 | 1,731 | 2,747 |
| 466 | Database Management | 5 | 114 | 590 | 624 |
| 466 | Human evolution | 1 | 114 | 646 | 447 |
| 466 | Solar System | 4 | 114 | 623 | 630 |
| 470 | Cloud Computing | 3 | 113 | 313 | 303 |
| 470 | Solutions | 6 | 113 | 223 | 243 |
| 472 | Medical Technology | 5 | 112 | 1,113 | 1,266 |
| 473 | plasma spraying | 7 | 111 | 111 | 174 |
| 474 | Marine Biology | 6 | 110 | 1,746 | 2,033 |
| 474 | hydrocolloids | 2 | 110 | 759 | 840 |
| 476 | Biopharmaceutics | 3 | 108 | 994 | 999 |
| 477 | Consciousness | 6 | 107 | 326 | 401 |
| 478 | Medical Anthropology | 4 | 106 | 996 | 1,259 |
| 479 | Cement | 3 | 105 | 552 | 740 |
| 480 | Geometry | 15 | 104 | 526 | 595 |
| 480 | Structural biology | 1 | 104 | 162 | 66 |
| 480 | Computational Intelligence | 10 | 104 | 236 | 487 |
| 480 | stocks | 3 | 104 | 118 | 178 |
| 484 | Neurobiology | 2 | 103 | 1,568 | 1,436 |
| 485 | Research Design | 6 | 102 | 751 | 1,008 |
| 485 | Therapeutics | 3 | 102 | 1,363 | 1,350 |
| 487 | Calorimetry | 8 | 101 | 688 | 943 |
| 487 | Thermal analysis | 8 | 101 | 688 | 943 |
| 489 | Biosensors | 3 | 99 | 1,236 | 1,590 |
| 489 | Marine Geology | 8 | 99 | 318 | 525 |
| 489 | Genomics | 3 | 99 | 2,521 | 2,403 |
| 489 | Chromosome mapping | 3 | 99 | 1,540 | 1,615 |
| 489 | Gerontology | 2 | 99 | 2,062 | 1,284 |
| 489 | gene mapping | 3 | 99 | 1,670 | 1,788 |
| 495 | Telecommunications | 7 | 98 | 414 | 518 |
| 495 | United Kingdom | 2 | 98 | 1,546 | 1,254 |
| 495 | mathematical concepts | 9 | 98 | 156 | 229 |
| 498 | behavioral medicine | 2 | 96 | 1,441 | 1,388 |
| 499 | Physical Geography | 2 | 95 | 633 | 444 |
| 499 | Technology Assessment | 2 | 95 | 565 | 579 |
| 499 | Cheminformatics | 2 | 95 | 417 | 411 |
| 502 | Psychoneuroimmunology | 1 | 94 | 871 | 736 |
| 502 | Neuroimmunology | 1 | 94 | 967 | 789 |
| 502 | Water Microbiology | 2 | 94 | 592 | 442 |
| 502 | technical education | 4 | 94 | 565 | 537 |
| 506 | Physiology | 6 | 92 | 2,565 | 3,170 |
| 506 | Ecological Engineering | 3 | 92 | 647 | 821 |
| 506 | Mineral resources | 3 | 92 | 641 | 753 |
| 509 | Mechanics | 8 | 91 | 791 | 981 |
| 510 | Religion and Psychology | 7 | 90 | 245 | 347 |
| 510 | Nanotubes | 7 | 90 | 71 | 71 |
| 512 | Computer Architecture | 10 | 89 | 215 | 368 |
| 512 | Chemical kinetics | 13 | 89 | 235 | 436 |
| 512 | Crystallography | 11 | 89 | 915 | 882 |
| 515 | nuclear power | 15 | 88 | 174 | 272 |
| 516 | Computer Engineering | 8 | 87 | 472 | 823 |
| 516 | Culture techniques | 9 | 87 | 126 | 240 |
| 518 | Business | 5 | 86 | 1,709 | 2,185 |
| 519 | Powder Metallurgy | 7 | 85 | 82 | 70 |
| 519 | water reuse | 2 | 85 | 457 | 371 |
| 519 | Cell death | 2 | 85 | 1,105 | 1,238 |
| 522 | Superconductors | 13 | 84 | 408 | 643 |
| 522 | Formal Languages | 4 | 84 | 248 | 110 |
| 522 | Microbial Metabolism | 3 | 84 | 154 | 268 |
| 522 | geological modeling | 3 | 84 | 533 | 438 |
| 522 | textile fibers | 5 | 84 | 301 | 288 |
| 522 | Minerals | 6 | 84 | 486 | 787 |
| 528 | free radicals | 3 | 83 | 1,179 | 1,480 |
| 528 | Post-traumatic stress disorder | 4 | 83 | 609 | 790 |
| 530 | Pharmacokinetics | 2 | 82 | 966 | 911 |
| 530 | Bioremediation | 4 | 82 | 708 | 1,029 |
| 530 | Marine Pollution | 4 | 82 | 1,032 | 1,375 |
| 533 | East Asia | 3 | 81 | 641 | 394 |
| 534 | Pharmacy | 2 | 80 | 2,100 | 1,879 |
| 534 | Liver diseases | 2 | 80 | 1,187 | 1,255 |
| 536 | Sintering | 5 | 79 | 20 | 12 |
| 537 | World Wide Web | 2 | 78 | 570 | 278 |
| 538 | Microbial Biotechnology | 3 | 77 | 1,054 | 1,135 |
| 538 | bioclimatology | 6 | 77 | 614 | 985 |
| 538 | irrigation | 8 | 77 | 158 | 292 |
| 538 | drainage | 8 | 77 | 120 | 189 |
| 542 | Freezing | 1 | 76 | 512 | 194 |
| 542 | silicon | 7 | 76 | 165 | 245 |
| 544 | Mobile Computing | 4 | 75 | 974 | 1,030 |
| 544 | Speech | 3 | 75 | 856 | 908 |
| 546 | Genetic engineering | 2 | 74 | 2,085 | 1,967 |
| 546 | Microwave devices | 7 | 74 | 297 | 443 |
| 548 | Flow Visualization | 26 | 73 | 3 | 4 |
| 548 | Sensor Networks | 2 | 73 | 348 | 212 |
| 548 | Entropy | 6 | 73 | 822 | 995 |
| 551 | Systems Analysis | 12 | 72 | 461 | 1,097 |
| 551 | Demography | 1 | 72 | 1,031 | 711 |
| 551 | personality | 2 | 72 | 1,662 | 1,618 |
| 551 | Recycling | 1 | 72 | 1,046 | 1,112 |
| 555 | Food Policy | 1 | 71 | 562 | 445 |
| 555 | agricultural policy | 1 | 71 | 429 | 380 |
| 555 | Mental Health Services | 4 | 71 | 945 | 1,126 |
| 555 | Medical innovations | 2 | 71 | 993 | 1,276 |
| 555 | Psychophysiology | 8 | 71 | 1,569 | 2,441 |
| 560 | Nanoelectronics | 13 | 70 | 304 | 600 |
| 561 | big data | 4 | 69 | 485 | 666 |
| 561 | Central Asia | 3 | 69 | 141 | 153 |
| 561 | Bones | 3 | 69 | 653 | 869 |
| 564 | economic policy | 11 | 68 | 1,248 | 1,806 |
| 564 | Bereavement | 3 | 68 | 170 | 161 |
| 566 | Superconductivity | 10 | 67 | 193 | 388 |
| 567 | Environmental Microbiology | 1 | 66 | 1,960 | 1,742 |
| 567 | Microbial Ecology | 1 | 66 | 2,741 | 2,542 |
| 567 | Qualitative Research | 3 | 66 | 522 | 531 |
| 567 | Culture | 6 | 66 | 764 | 843 |
| 571 | Petroleum Geology | 4 | 65 | 440 | 579 |
| 571 | Geomagnetism | 4 | 65 | 505 | 625 |
| 571 | System design | 5 | 65 | 107 | 233 |
| 574 | Microfluidics | 3 | 64 | 230 | 292 |
| 575 | Geosynthetics | 8 | 63 | 20 | 84 |
| 575 | Machine Learning | 4 | 63 | 271 | 381 |
| 575 | Antioxidants | 2 | 63 | 835 | 1,022 |
| 575 | vitamin C | 2 | 63 | 499 | 596 |
| 575 | vitamin E | 2 | 63 | 499 | 596 |
| 580 | Cultural Studies | 4 | 62 | 94 | 131 |
| 580 | Mental Health | 4 | 62 | 1,304 | 1,529 |
| 580 | Operator theory | 12 | 62 | 109 | 246 |
| 580 | Religion | 6 | 62 | 603 | 471 |
| 580 | Religion and Culture | 4 | 62 | 204 | 261 |
| 580 | data protection | 7 | 62 | 276 | 544 |
| 586 | Electrophoresis | 2 | 61 | 1,762 | 1,652 |
| 586 | Eastern Europe | 4 | 61 | 746 | 597 |
| 588 | Number Theory | 13 | 60 | 333 | 500 |
| 588 | Geodesy | 5 | 60 | 546 | 822 |
| 588 | Cerebellum | 1 | 60 | 504 | 356 |
| 588 | Cerebellar ataxia | 1 | 60 | 504 | 356 |
| 592 | Solar power plants | 2 | 59 | 212 | 274 |
| 592 | Cognitive neuroscience | 1 | 59 | 1,353 | 1,145 |
| 592 | Oncogenes | 1 | 59 | 1,168 | 1,262 |
| 592 | Discrete geometry | 2 | 59 | 339 | 196 |
| 592 | Photovoltaic Cells | 2 | 59 | 213 | 274 |
| 592 | Neuroplasticity | 1 | 59 | 513 | 408 |
| 592 | electroplating | 3 | 59 | 55 | 27 |
| 592 | surface preparation | 3 | 59 | 46 | 25 |
| 592 | human development | 1 | 59 | 1,245 | 1,004 |
| 601 | Embedded Systems | 9 | 58 | 77 | 211 |
| 601 | Cartography | 7 | 58 | 228 | 374 |
| 601 | Total Quality Management | 2 | 58 | 767 | 732 |
| 601 | Water quality | 2 | 58 | 316 | 282 |
| 601 | Water chemistry | 2 | 58 | 486 | 394 |
| 606 | Diagnostic Imaging | 9 | 57 | 959 | 1,635 |
| 606 | Environmental forensics | 2 | 57 | 86 | 54 |
| 606 | Cellulose | 2 | 57 | 801 | 882 |
| 609 | Systems Biology | 3 | 56 | 1,336 | 1,673 |
| 609 | Imaging systems | 4 | 56 | 709 | 650 |
| 609 | language | 3 | 56 | 803 | 950 |
| 612 | Food Preservation | 4 | 55 | 719 | 814 |
| 612 | rivers | 2 | 55 | 374 | 367 |
| 614 | Hydrogeology | 5 | 54 | 516 | 872 |
| 614 | Polymer Engineering | 1 | 54 | 292 | 95 |
| 616 | Community Psychology | 2 | 53 | 660 | 660 |
| 616 | sustainability | 5 | 53 | 631 | 1,290 |
| 616 | multimedia | 4 | 53 | 411 | 698 |
| 616 | Interactive multimedia | 4 | 53 | 476 | 773 |
| 620 | Probability | 5 | 51 | 424 | 693 |
| 620 | biological monitoring | 3 | 51 | 489 | 720 |
| 622 | Logistics | 2 | 50 | 732 | 874 |
| 622 | Bifurcation Theory | 4 | 50 | 199 | 303 |
| 622 | occupational diseases | 1 | 50 | 1,200 | 1,047 |
| 625 | Surveying | 4 | 49 | 93 | 87 |
| 625 | Graph Theory | 6 | 49 | 510 | 578 |
| 625 | Chemical processes | 7 | 49 | 311 | 664 |
| 625 | Social behavior | 1 | 49 | 1,735 | 1,369 |
| 625 | traffic safety | 4 | 49 | 232 | 367 |
| 630 | Logic | 6 | 48 | 314 | 368 |
| 630 | Tissue Engineering | 6 | 48 | 198 | 489 |
| 630 | Social History | 8 | 48 | 219 | 378 |
| 630 | infrared radiation | 5 | 48 | 445 | 629 |
| 630 | Ultrasonics | 2 | 48 | 1,427 | 1,710 |
| 635 | Soil Science | 3 | 47 | 1,788 | 2,189 |
| 635 | magnetic resonance | 1 | 47 | 874 | 544 |
| 637 | Oncology | 2 | 46 | 2,017 | 2,461 |
| 637 | health behavior | 2 | 46 | 1,041 | 1,111 |
| 637 | Health | 2 | 46 | 2,347 | 2,245 |
| 637 | Africa | 3 | 46 | 1,560 | 1,348 |
| 641 | Combinatorial optimization | 10 | 45 | 159 | 440 |
| 641 | Waste management | 6 | 45 | 978 | 1,641 |
| 641 | Building | 4 | 45 | 465 | 575 |
| 641 | public works | 7 | 45 | 68 | 146 |
| 641 | Vietnam | 2 | 45 | 129 | 142 |
| 646 | Nanomanufacturing | 3 | 44 | 109 | 69 |
| 646 | Proteome | 3 | 44 | 1,011 | 1,427 |
| 646 | Groundwater | 4 | 44 | 474 | 812 |
| 646 | Approximation Theory | 4 | 44 | 378 | 431 |
| 646 | Informatics | 8 | 44 | 473 | 1,117 |
| 651 | Molecular evolution | 2 | 43 | 1,696 | 2,023 |
| 651 | Electromagnetic waves | 4 | 43 | 250 | 381 |
| 653 | Philosophy | 6 | 42 | 1,125 | 1,004 |
| 653 | Land use | 1 | 42 | 1,794 | 1,641 |
| 655 | Inventory Control | 1 | 41 | 178 | 199 |
| 655 | Drug design | 2 | 41 | 1,729 | 1,888 |
| 655 | Zeolites | 4 | 41 | 828 | 1,431 |
| 655 | Middle East | 2 | 41 | 1,296 | 1,012 |
| 659 | Mountains | 2 | 40 | 550 | 467 |
| 660 | Linguistics | 2 | 39 | 1,522 | 1,293 |
| 660 | Adsorption | 3 | 39 | 199 | 338 |
| 660 | Semiconductor industry | 7 | 39 | 335 | 663 |
| 663 | Heterocyclic chemistry | 4 | 38 | 440 | 535 |
| 663 | Water Purification | 5 | 38 | 892 | 1,459 |
| 663 | microwave communication systems | 2 | 38 | 471 | 501 |
| 663 | Chemical structure | 3 | 38 | 524 | 552 |
| 667 | Sedimentology | 3 | 37 | 606 | 925 |
| 667 | Micropaleontology | 1 | 37 | 255 | 162 |
| 667 | Marine Geophysics | 5 | 37 | 157 | 369 |
| 667 | Endocrine system | 1 | 37 | 934 | 388 |
| 671 | Child Development | 3 | 36 | 1,618 | 2,169 |
| 672 | Nuclear Fusion | 4 | 35 | 463 | 630 |
| 672 | Virtual reality | 1 | 35 | 760 | 629 |
| 672 | touch | 1 | 35 | 210 | 189 |
| 672 | Wind power | 5 | 35 | 180 | 406 |
| 672 | Library Science | 6 | 35 | 593 | 977 |
| 672 | Combinatorial analysis | 5 | 35 | 826 | 892 |
| 678 | environmental indicators | 1 | 34 | 1,732 | 1,925 |
| 678 | Marine mineral resources | 4 | 34 | 116 | 216 |
| 678 | cross-cultural comparison | 2 | 34 | 667 | 769 |
| 678 | Seabed | 4 | 34 | 116 | 216 |
| 678 | genome | 3 | 34 | 1,311 | 1,995 |
| 678 | Cerebral cortex | 2 | 34 | 957 | 1,221 |
| 684 | Hospitality industry | 1 | 33 | 811 | 785 |
| 685 | Risk Management | 2 | 32 | 841 | 1,048 |
| 685 | sedimentary basins | 1 | 32 | 339 | 377 |
| 685 | Financial management | 2 | 32 | 601 | 888 |
| 685 | Risk | 2 | 32 | 643 | 855 |
| 685 | Peasants | 2 | 32 | 124 | 208 |
| 690 | Mining Engineering | 1 | 31 | 861 | 702 |
| 690 | Intelligent Transportation Systems | 4 | 31 | 951 | 1,633 |
| 690 | Microcirculation | 1 | 31 | 725 | 715 |
| 690 | Blood vessels | 1 | 31 | 628 | 629 |
| 694 | Optoelectronics | 12 | 30 | 173 | 577 |
| 694 | Discrete Mathematics | 4 | 30 | 287 | 281 |
| 694 | Crystallization | 2 | 30 | 614 | 551 |
| 694 | Noise | 2 | 30 | 189 | 201 |
| 694 | graph | 4 | 30 | 287 | 281 |
| 694 | Fossil fuels | 3 | 30 | 81 | 46 |
| 694 | Submersibles | 4 | 30 | 4 | 11 |
| 694 | Export Marketing | 2 | 30 | 305 | 510 |
| 694 | planning | 3 | 30 | 776 | 1,179 |
| 694 | Vaccines | 2 | 30 | 1,761 | 2,166 |
| 704 | Food Microbiology | 1 | 29 | 1,796 | 2,029 |
| 704 | Cognitive Therapy | 2 | 29 | 738 | 913 |
| 704 | Sonochemistry | 1 | 29 | 1,118 | 1,429 |
| 704 | Foodborne diseases | 1 | 29 | 478 | 501 |
| 704 | Social problems | 1 | 29 | 1,000 | 983 |
| 704 | place marketing | 1 | 29 | 244 | 377 |
| 710 | Pediatrics | 2 | 28 | 2,180 | 2,561 |
| 710 | Pediatric Neurology | 2 | 28 | 828 | 1,212 |
| 710 | Neurosurgery | 1 | 28 | 1,174 | 1,203 |
| 710 | Architectural Design | 2 | 28 | 630 | 634 |
| 710 | Child | 2 | 28 | 2,321 | 2,548 |
| 710 | Quality Assurance | 4 | 28 | 250 | 553 |
| 710 | complementary therapies | 3 | 28 | 1,660 | 2,499 |
| 710 | Semigroups | 2 | 28 | 408 | 261 |
| 710 | income | 1 | 28 | 331 | 295 |
| 710 | Input-output analysis | 1 | 28 | 445 | 399 |
| 710 | Wealth | 1 | 28 | 331 | 295 |
| 710 | Alloys | 7 | 28 | 126 | 289 |
| 710 | fusion reactors | 3 | 28 | 384 | 442 |
| 723 | Historic Preservation | 2 | 27 | 165 | 199 |
| 723 | international trade | 2 | 27 | 931 | 1,060 |
| 723 | city planning | 3 | 27 | 1,552 | 2,164 |
| 726 | Game Theory | 7 | 26 | 335 | 729 |
| 726 | Mathematics Education | 12 | 26 | 143 | 598 |
| 726 | Regional Planning | 2 | 26 | 1,680 | 1,963 |
| 726 | Geothermal Energy | 2 | 26 | 328 | 519 |
| 726 | Scheduling | 1 | 26 | 280 | 284 |
| 726 | Production Scheduling | 1 | 26 | 280 | 284 |
| 726 | Business Ethics | 3 | 26 | 995 | 1,748 |
| 726 | economic conditions | 3 | 26 | 503 | 765 |
| 726 | winds | 4 | 26 | 71 | 169 |
| 735 | Cryptography | 4 | 25 | 572 | 756 |
| 735 | Kinetics | 2 | 25 | 638 | 826 |
| 735 | Foraminifera | 3 | 25 | 87 | 196 |
| 735 | gene transfer | 1 | 25 | 461 | 487 |
| 735 | genetic transformation | 1 | 25 | 461 | 487 |
| 740 | Immunology | 3 | 24 | 2,410 | 3,350 |
| 740 | Agricultural Engineering | 1 | 24 | 767 | 812 |
| 740 | Public Relations | 3 | 24 | 448 | 754 |
| 740 | Public Administration | 3 | 24 | 1,352 | 1,693 |
| 740 | Brain-Computer Interfaces | 1 | 24 | 108 | 85 |
| 740 | Environmental Geochemistry | 2 | 24 | 795 | 1,154 |
| 740 | antibiotics | 1 | 24 | 442 | 523 |
| 747 | Digital electronics | 4 | 23 | 254 | 389 |
| 747 | Electronic Packaging | 5 | 23 | 146 | 357 |
| 747 | Molecular recognition | 1 | 23 | 457 | 454 |
| 747 | Microprocessors | 6 | 23 | 378 | 949 |
| 747 | Coding Theory | 3 | 23 | 376 | 465 |
| 752 | Agricultural Ecology | 1 | 22 | 1,597 | 1,879 |
| 752 | Plasma chemistry | 2 | 22 | 493 | 704 |
| 752 | Enteral nutrition | 1 | 22 | 1,117 | 1,330 |
| 752 | Developmental Neurobiology | 2 | 22 | 682 | 886 |
| 752 | Parenteral nutrition | 1 | 22 | 1,255 | 1,443 |
| 752 | Sequential Analysis | 4 | 22 | 62 | 102 |
| 752 | Mesoporous materials | 3 | 22 | 91 | 202 |
| 752 | Plasma polymerization | 2 | 22 | 320 | 488 |
| 752 | Liposomes | 3 | 22 | 589 | 983 |
| 752 | Lipid bilayers | 3 | 22 | 497 | 788 |
| 752 | Oxidation | 2 | 22 | 192 | 309 |
| 752 | Peptide | 1 | 22 | 319 | 297 |
| 752 | Petroleum | 1 | 22 | 464 | 380 |
| 752 | Maps | 2 | 22 | 206 | 304 |
| 766 | Ergonomics | 1 | 21 | 1,385 | 1,360 |
| 766 | Pharmacognosy | 1 | 21 | 2,529 | 2,829 |
| 766 | Econometrics | 4 | 21 | 1,192 | 1,654 |
| 766 | Algorithms | 2 | 21 | 926 | 1,050 |
| 766 | Industrial Safety | 2 | 21 | 1,457 | 1,824 |
| 766 | Organizational learning | 2 | 21 | 647 | 905 |
| 766 | Drug targeting | 1 | 21 | 593 | 823 |
| 766 | consumer behavior | 2 | 21 | 707 | 1,163 |
| 766 | Thermochemistry | 3 | 21 | 507 | 809 |
| 766 | Knowledge management | 2 | 21 | 595 | 834 |
| 766 | Mitochondria | 1 | 21 | 510 | 640 |
| 766 | X-ray crystallography | 2 | 21 | 604 | 698 |
| 766 | Oral communication | 2 | 21 | 558 | 738 |
| 766 | Tunneling | 2 | 21 | 409 | 680 |
| 766 | underground construction | 2 | 21 | 409 | 680 |
| 766 | RNA | 1 | 21 | 774 | 934 |
| 766 | drug evaluation | 1 | 21 | 1,768 | 1,950 |
| 783 | Geography | 1 | 20 | 2,745 | 2,753 |
| 783 | Infections | 1 | 20 | 1,420 | 1,696 |
| 783 | Asymmetric synthesis | 3 | 20 | 87 | 252 |
| 783 | Geobiology | 1 | 20 | 688 | 825 |
| 783 | Transport | 1 | 20 | 949 | 1,109 |
| 783 | Pacific Islands | 1 | 20 | 612 | 519 |
| 783 | Virulence | 1 | 20 | 1,351 | 1,735 |
| 783 | Refractory materials | 1 | 20 | 280 | 156 |
| 791 | Food Science | 1 | 19 | 500 | 478 |
| 791 | Public Policy | 2 | 19 | 1,976 | 2,734 |
| 791 | Psycholinguistics | 3 | 19 | 902 | 1,400 |
| 791 | heat pipes | 8 | 19 | 3 | 10 |
| 791 | Extreme Value Theory | 2 | 19 | 107 | 166 |
| 791 | intergroup relations | 1 | 19 | 372 | 485 |
| 791 | Gene expression regulation | 2 | 19 | 1,057 | 1,467 |
| 791 | Social policy | 2 | 19 | 1,256 | 1,570 |
| 791 | Genetic regulation | 2 | 19 | 1,129 | 1,602 |
| 791 | Infrared spectroscopy | 2 | 19 | 430 | 781 |
| 791 | Ultrasonic Imaging | 1 | 19 | 842 | 939 |
| 791 | Ultrasound | 1 | 19 | 1,076 | 1,219 |
| 803 | Economic Thought | 2 | 18 | 376 | 650 |
| 803 | radiative transfer | 2 | 18 | 737 | 899 |
| 803 | environmental remediation | 1 | 18 | 765 | 886 |
| 803 | Adaptive control systems | 3 | 18 | 624 | 1,000 |
| 803 | Economic planning | 1 | 18 | 943 | 1,131 |
| 808 | Stem cells | 3 | 17 | 1,152 | 1,871 |
| 808 | Lipids | 4 | 17 | 1,028 | 2,013 |
| 808 | North America | 1 | 17 | 1,361 | 1,356 |
| 808 | Nonlinear systems | 2 | 17 | 767 | 1,041 |
| 812 | Atmospheric Science | 1 | 16 | 342 | 407 |
| 812 | Medical Oncology | 1 | 16 | 1,859 | 2,154 |
| 812 | Radiography | 1 | 16 | 1,033 | 1,250 |
| 812 | Cross-Cultural Studies | 2 | 16 | 926 | 1,389 |
| 812 | Visual Perception | 1 | 16 | 1,840 | 1,970 |
| 812 | Random graphs | 1 | 16 | 257 | 246 |
| 812 | Korea | 1 | 16 | 716 | 598 |
| 812 | Perception | 2 | 16 | 1,644 | 2,180 |
| 820 | Investment analysis | 1 | 15 | 1,590 | 1,628 |
| 820 | Urban Areas | 1 | 15 | 471 | 525 |
| 820 | cryosphere | 1 | 15 | 542 | 707 |
| 820 | rehabilitation | 2 | 15 | 2,258 | 3,074 |
| 820 | Genes | 1 | 15 | 1,579 | 1,798 |
| 825 | Hemostasis | 2 | 14 | 752 | 1,059 |
| 825 | Thrombosis | 2 | 14 | 989 | 1,446 |
| 825 | Cognitive Science | 4 | 14 | 1,358 | 2,659 |
| 825 | Soil stabilization | 1 | 14 | 37 | 35 |
| 825 | Continuum Mechanics | 2 | 14 | 224 | 382 |
| 825 | Child psychology | 1 | 14 | 1,926 | 2,211 |
| 825 | Radioisotopes | 6 | 14 | 729 | 1,569 |
| 832 | Political Science | 3 | 13 | 1,615 | 1,999 |
| 832 | Audiology | 2 | 13 | 814 | 1,122 |
| 832 | Pathology | 1 | 13 | 2,216 | 2,646 |
| 832 | Pharmacogenetics | 1 | 13 | 1,221 | 1,520 |
| 832 | Educational Psychology | 1 | 13 | 2,057 | 2,264 |
| 832 | genre | 1 | 13 | 458 | 590 |
| 832 | Oxidative stress | 2 | 13 | 989 | 1,841 |
| 832 | epilepsy | 1 | 13 | 1,235 | 1,479 |
| 832 | Lattice Theory | 3 | 13 | 207 | 283 |
| 832 | Coral reef biology | 2 | 13 | 376 | 658 |
| 832 | Hearing Aids | 2 | 13 | 256 | 369 |
| 832 | Cell cycle | 1 | 13 | 507 | 705 |
| 832 | Cell survival | 2 | 13 | 265 | 695 |
| 832 | cell proliferation | 1 | 13 | 542 | 733 |
| 832 | construction | 1 | 13 | 374 | 491 |
| 832 | Investments | 2 | 13 | 723 | 1,184 |
| 832 | molecular chaperones | 2 | 13 | 306 | 703 |
| 832 | Plant cells | 1 | 13 | 1,355 | 1,887 |
| 850 | Health Services Administration | 2 | 12 | 1,233 | 1,952 |
| 850 | Visual Communication | 1 | 12 | 849 | 951 |
| 850 | Health Information Management | 1 | 12 | 663 | 1,116 |
| 850 | Intelligence | 1 | 12 | 435 | 556 |
| 850 | Molecular cloning | 1 | 12 | 1,956 | 2,303 |
| 850 | Image enhancement | 1 | 12 | 684 | 854 |
| 850 | Socialization | 1 | 12 | 886 | 1,182 |
| 850 | Genetic recombination | 1 | 12 | 1,923 | 2,279 |
| 850 | industrial relations | 2 | 12 | 1,025 | 1,482 |
| 850 | scientific societies | 2 | 12 | 864 | 1,428 |
| 850 | role | 1 | 12 | 761 | 1,063 |
| 850 | Recombinant DNA | 1 | 12 | 2,001 | 2,364 |
| 862 | Inorganic Chemistry | 1 | 11 | 125 | 245 |
| 862 | Nanobiotechnology | 1 | 11 | 743 | 1,223 |
| 862 | Urban Transportation | 1 | 11 | 302 | 428 |
| 862 | Globalization | 1 | 11 | 1,053 | 1,288 |
| 862 | Emulsions | 2 | 11 | 498 | 879 |
| 862 | Programming Languages | 1 | 11 | 88 | 74 |
| 862 | Biodiversity | 2 | 11 | 2,438 | 3,329 |
| 869 | Educational Technology | 1 | 10 | 2,599 | 3,086 |
| 869 | Population Genetics | 2 | 10 | 1,276 | 2,079 |
| 869 | Multiscale Modeling | 3 | 10 | 70 | 157 |
| 869 | soil management | 1 | 10 | 900 | 1,259 |
| 869 | Risk assessment | 3 | 10 | 649 | 1,489 |
| 869 | Parallel Processing | 2 | 10 | 541 | 963 |
| 869 | optical instruments | 1 | 10 | 521 | 617 |
| 869 | Iron | 1 | 10 | 504 | 627 |
| 869 | Social work | 1 | 10 | 2,063 | 2,255 |
| 869 | Population | 2 | 10 | 1,040 | 1,781 |
| 869 | Testing | 2 | 10 | 95 | 232 |
| 869 | tillage | 1 | 10 | 718 | 1,078 |
| 869 | educational innovations | 1 | 10 | 965 | 1,201 |
| 869 | Plasma devices | 2 | 10 | 357 | 625 |
| 883 | Agricultural Chemistry | 2 | 9 | 2,428 | 3,462 |
| 883 | Nonparametric Statistics | 2 | 9 | 243 | 384 |
| 883 | Structural health monitoring | 1 | 9 | 376 | 593 |
| 883 | Biodegradation | 1 | 9 | 1,316 | 1,812 |
| 883 | ecological risk assessment | 2 | 9 | 345 | 838 |
| 883 | digital preservation | 1 | 9 | 158 | 273 |
| 883 | Supramolecular chemistry | 1 | 9 | 516 | 634 |
| 883 | structural stability | 1 | 9 | 518 | 786 |
| 883 | Electromagnetic interference | 1 | 9 | 33 | 37 |
| 883 | wind erosion | 1 | 9 | 214 | 416 |
| 883 | Reservoirs | 1 | 9 | 369 | 510 |
| 883 | Health promotion | 2 | 9 | 1,310 | 2,022 |
| 883 | lakes | 1 | 9 | 180 | 286 |
| 883 | Capital market | 2 | 9 | 580 | 1,095 |
| 883 | Health Risk Assessment | 2 | 9 | 607 | 1,215 |
| 883 | Australia | 2 | 9 | 2,154 | 3,114 |
| 883 | Human biology | 1 | 9 | 1,049 | 1,307 |
| 900 | Radiology | 5 | 8 | 941 | 1,971 |
| 900 | Marine Engineering | 2 | 8 | 451 | 615 |
| 900 | Cochlear Implants | 1 | 8 | 163 | 208 |
| 900 | Information Systems | 3 | 8 | 1,394 | 2,715 |
| 900 | Naval Architecture | 2 | 8 | 515 | 763 |
| 900 | Supply Chain Management | 1 | 8 | 69 | 151 |
| 900 | Liquid Crystals | 1 | 8 | 1,320 | 1,323 |
| 900 | Child welfare | 1 | 8 | 1,746 | 2,095 |
| 900 | Public Choice | 1 | 8 | 615 | 772 |
| 900 | Group decision making | 1 | 8 | 824 | 1,046 |
| 900 | natural products | 1 | 8 | 2,553 | 2,898 |
| 900 | Biomass | 1 | 8 | 1,221 | 1,818 |
| 900 | irreversible processes | 1 | 8 | 81 | 137 |
| 900 | Nonequilibrium thermodynamics | 1 | 8 | 81 | 137 |
| 900 | Autism | 1 | 8 | 1,008 | 1,400 |
| 915 | Signal Transduction | 1 | 7 | 1,752 | 2,360 |
| 915 | Environmental Sociology | 1 | 7 | 94 | 190 |
| 915 | Acoustics | 1 | 7 | 583 | 574 |
| 915 | Municipal Engineering | 2 | 7 | 461 | 1,110 |
| 915 | Interior Design | 1 | 7 | 31 | 34 |
| 915 | Greenhouse gases | 1 | 7 | 472 | 816 |
| 915 | Functional equations | 1 | 7 | 455 | 448 |
| 915 | Spectroscopy | 1 | 7 | 382 | 378 |
| 915 | World Bank | 1 | 7 | 110 | 243 |
| 915 | Earthquakes | 2 | 7 | 460 | 797 |
| 915 | Sulfur | 1 | 7 | 249 | 360 |
| 915 | Quality of life | 1 | 7 | 2,150 | 2,881 |
| 915 | Memory | 2 | 7 | 1,611 | 2,530 |
| 915 | Chemical reactors | 3 | 7 | 156 | 409 |
| 915 | Emotions | 1 | 7 | 912 | 1,286 |
| 930 | Education | 3 | 6 | 3,426 | 4,984 |
| 930 | food technology | 1 | 6 | 3,317 | 4,074 |
| 930 | Libertarianism | 1 | 6 | 92 | 123 |
| 930 | Moon | 2 | 6 | 186 | 369 |
| 930 | foods | 1 | 6 | 286 | 531 |
| 930 | International Business | 1 | 6 | 406 | 676 |
| 930 | software | 1 | 6 | 1,590 | 2,203 |
| 937 | Archaeology | 2 | 5 | 1,408 | 1,995 |
| 937 | Experimental Psychology | 1 | 5 | 901 | 1,105 |
| 937 | Comparative Literature | 1 | 5 | 348 | 106 |
| 937 | Radiochemistry | 2 | 5 | 1,202 | 1,827 |
| 937 | Diabetes mellitus | 1 | 5 | 2,217 | 2,994 |
| 937 | Pesticide residues | 1 | 5 | 167 | 391 |
| 937 | diffusion | 1 | 5 | 613 | 513 |
| 937 | Nonlinear Optics | 1 | 5 | 262 | 352 |
| 937 | Religion and law | 1 | 5 | 24 | 21 |
| 937 | Calculus of Variations | 1 | 5 | 845 | 973 |
| 937 | food contamination | 1 | 5 | 1,746 | 2,343 |
| 937 | Religion and Sociology | 1 | 5 | 437 | 512 |
| 937 | Entrepreneurship | 1 | 5 | 1,619 | 2,273 |
| 937 | organizational effectiveness | 1 | 5 | 869 | 1,227 |
| 937 | stability | 1 | 5 | 217 | 284 |
| 937 | England | 1 | 5 | 327 | 258 |
| 937 | Labor market | 1 | 5 | 15 | 65 |
| 937 | optical devices | 1 | 5 | 827 | 1,129 |
| 937 | DNA | 1 | 5 | 993 | 1,381 |
| 937 | Scanning electron microscopy | 1 | 5 | 304 | 490 |
| 937 | Diabetes | 1 | 5 | 2,253 | 3,005 |
| 958 | Visual Arts | 1 | 4 | 241 | 359 |
| 958 | Architecture | 1 | 4 | 940 | 1,075 |
| 958 | Cognitive Psychology | 2 | 4 | 570 | 988 |
| 958 | Intercultural Communication | 1 | 4 | 836 | 1,246 |
| 958 | Phenomenology | 2 | 4 | 330 | 513 |
| 958 | Mathematical Economics | 2 | 4 | 384 | 653 |
| 958 | Philosophy of Mind | 2 | 4 | 362 | 680 |
| 958 | soil pollution | 1 | 4 | 1,080 | 1,628 |
| 958 | foreign exchange | 1 | 4 | 600 | 898 |
| 958 | Financial Institutions | 1 | 4 | 742 | 1,087 |
| 958 | design | 1 | 4 | 542 | 621 |
| 958 | ozone | 1 | 4 | 270 | 548 |
| 958 | drug development | 2 | 4 | 1,024 | 1,981 |
| 958 | Hydrocarbons | 1 | 4 | 200 | 327 |
| 958 | electrocatalysis | 1 | 4 | 249 | 509 |
| 973 | Obstetrics | 1 | 3 | 2,486 | 3,279 |
| 973 | International Relations | 2 | 3 | 1,209 | 1,756 |
| 973 | Magnetic Resonance Imaging | 1 | 3 | 620 | 897 |
| 973 | Health Policy | 1 | 3 | 2,902 | 3,829 |
| 973 | Neonatology | 1 | 3 | 941 | 1,490 |
| 973 | Autobiography | 1 | 3 | 226 | 181 |
| 973 | Computational Linguistics | 1 | 3 | 1,078 | 1,476 |
| 973 | particle accelerators | 1 | 3 | 193 | 308 |
| 973 | Behavioral Finance | 1 | 3 | 145 | 369 |
| 973 | Language and Logic | 1 | 3 | 171 | 250 |
| 973 | Noise control | 8 | 3 | 117 | 306 |
| 973 | particle beams | 1 | 3 | 187 | 304 |
| 973 | radar | 2 | 3 | 226 | 576 |
| 973 | drug therapy | 1 | 3 | 2,154 | 2,877 |
| 973 | smart structures | 1 | 3 | 25 | 66 |
| 973 | Women's health | 1 | 3 | 1,948 | 2,740 |
| 973 | applications | 1 | 3 | 135 | 227 |
| 990 | Quality Management | 1 | 2 | 379 | 675 |
| 990 | Human Geography | 1 | 2 | 1,675 | 2,344 |
| 990 | Agricultural Biotechnology | 1 | 2 | 595 | 835 |
| 990 | Microeconomics | 2 | 2 | 414 | 795 |
| 990 | Sustainable agriculture | 1 | 2 | 1,288 | 2,025 |
| 990 | Biogeochemical cycles | 1 | 2 | 604 | 940 |
| 990 | Forecasting | 2 | 2 | 716 | 1,417 |
| 990 | Drying | 1 | 2 | 680 | 1,103 |
| 990 | Executive Power | 1 | 2 | 201 | 259 |
| 990 | Amyloidosis | 2 | 2 | 162 | 430 |
| 990 | Flood control | 1 | 2 | 577 | 1,019 |