1. INTRODUCTION
2. QUASAR SELECTION AND OBSERVATION
2.1. Quasar Candidate Selection
2.2. Optical Imaging Follow-up Observations with CQUEAN
2.3. Optical Spectroscopic Follow-up Observations
2.4. NIR Spectroscopic Observation
3. HIGH REDSHIFT QUASARS
3.2. Spectroscopic Properties
3.3. Individual Properties of Quasars
4. SELECTION COMPLETENESS
4.1. Completeness from Color Cuts
4.2. Expected Quasar Number from Our Surveys
5. PHYSICAL PROPERTIES OF QUASARS
5.1. Analysis of NIR Spectra
5.2. Ultraviolet Luminosity and M BH
5.3. Accretion Rate of Newly Discovered Quasars
6. SUMMARY