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Creation Date 

1. Before 1959  (105)
2. 1959 To 1974  (2,978)
3. 1975 To 1990  (40,782)
4. 1991 To 2007  (204,650)
5. After 2007  (550,921)
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New Records 

1. New From Last Week  (107)
2. New From Last Month  (10,240)
3. New From Last 3 Month  (13,330)
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Resource Type 

1. Patents  (392,948)
2. Articles  (332,888)
3. Book Chapters  (18,397)
4. magazinearticle  (16,906)
5. Conference Proceedings  (11,236)
6. Reports  (10,392)
7. Thesises (postgraduate)  (7,716)
8. Books  (4,648)
9. Reviews  (2,213)
10. Web Resources  (1,325)
11. Newsletter Articles  (689)
12. References  (483)
13. Text Resources  (283)
14. Newspaper Articles  (241)
15. Standards  (163)
16. Other  (92)
17. Images  (82)
18. Datasets  (56)
19. Audio  (46)
20. Videos  (45)
21. Journals  (29)
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Subject 

1. Science & Technology  (238,726)
2. Physics  (222,868)
3. Electricity  (174,643)
4. Technology  (157,595)
5. Electric Communication Technique  (137,969)
6. Engineering  (112,971)
7. Testing  (89,848)
8. Measuring  (89,034)
9. Signal Processing  (83,031)
10. Physical Sciences  (76,173)
11. Algorithms  (70,730)
12. Engineering, Electrical & Electronic  (68,298)
13. Pictorial Communication, E.G. Television  (67,269)
14. Life Sciences & Biomedicine  (58,803)
15. Computer Science  (54,943)
16. Counting  (45,580)
17. Computing  (45,385)
18. Calculating  (45,342)
19. Humans  (38,575)
20. Acoustics  (34,922)
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Author/Creator 

1. Vesa Välimäki (Ed.)  (1)
2. Ulrike Domahs; Hubert Truckenbrodt; Richard Wiese  (1)
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Databases 

1. esp@cenet  (330,648)
2. ProQuest Central  (247,325)
3. DOAJ Directory of Open Access Journals  (153,259)
4. ROAD: Directory of Open Access Scholarly Resources  (126,168)
5. GFMER Free Medical Journals  (67,500)
6. MEDLINE  (57,347)
7. PubMed Central  (53,512)
8. USPTO Issued Patents  (37,629)
9. USPTO Published Applications  (24,621)
10. Springer Nature OA/Free Journals  (20,972)
11. Wiley-Blackwell Open Access Titles  (15,259)
12. IOP Publishing Free Content  (14,737)
13. Hyper Article en Ligne (HAL) (Open Access)  (14,149)
14. Freely Accessible Journals  (13,353)
15. IOPscience (Open Access)  (11,569)
16. arXiv.org  (11,071)
17. ProQuest One Psychology  (9,932)
18. DTIC STINET  (9,436)
19. DTIC Technical Reports  (9,436)
20. Ebook Central - Academic Complete  (9,292)
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Language 

1. English  (762,328)
2. Chinese  (93,661)
3. French  (47,716)
4. Japanese  (43,493)
5. German  (33,830)
6. Korean  (17,843)
7. Spanish  (3,049)
8. Russian  (2,876)
9. Portuguese  (1,720)
10. Swedish  (877)
11. Italian  (691)
12. Danish  (608)
13. Norwegian  (594)
14. Finnish  (528)
15. Dutch  (351)
16. Polish  (258)
17. Ukrainian  (242)
18. Croatian  (190)
19. Turkish  (164)
20. Hebrew  (137)
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Journal Title 

1. Applied Sciences  (5,398)
2. arXiv.org  (10,640)
3. Circuits, Systems, And Signal Processing  (4,677)
4. Eurasip Journal On Advances In Signal Processing  (7,966)
5. Journal Of Physics: Conference Series  (8,105)
6. Journal Of Physics. Conference Series  (8,695)
7. Plos One  (5,089)
8. Scientific Reports  (4,232)
9. Sensors  (12,852)
10. The Journal Of The Acoustical Society Of America  (4,684)
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