Systems Engineer at Quantcast
San Francisco, California
Yinchuan Song currently works at Quantcast Yinchuan studied at Towson University and Yinchuan is located at San Francisco, California.
Systems Engineer at Quantcast
Medical Decision Logic, Qingdao University, Sun Microsystems, Qingdao University
Master of Science (MSc), Applied Information Technology@Towson University
Information Technology and Services
Information technology (IT) is the application of computers to store, study, retrieve, transmit and manipulate data, or information, often in the context of a business or other enterprise.Companies in the information technology field are often discussed as a group as the tech industry.In a business context, the Information Technology Association of America has defined information technology as the study, design, development, application, implementation, support or management of computer-based information systems. The business value of information technology lies in the automation of business processes, provision of information for decision making, connecting businesses with their customers, and the provision of productivity tools to increase efficiency.
Accenture, Hitachi, Huawei, Unisys, Infosys Technologies
California is a state in the Pacific Region of the United States. With 39.5 million residents, California is the most populous state in the United States and the third most extensive by area. The state capital is Sacramento. The Greater Los Angeles Area and the San Francisco Bay Area are the nation's second- and fifth-most populous urban regions, with 18.7 million and 8.8 million residents respectively. Los Angeles is California's most populous city, and the country's second largest after New York City. California also has the nation's most populous county, Los Angeles County; its largest county by area, San Bernardino County; and its fifth most densely populated county, San Francisco. California's $2.717 trillion economy is larger than that of any other state. If it were a country, California would be the 5th largest economy in the world, and the 36th most populous. The Greater Los Angeles Area and the San Francisco Bay Area are the nation's second- and third-largest urban economies. The San Francisco Bay Area combined statistical area has the nation's highest GDP per capita, and is home to four of the world's ten largest companies by market capitalization and four of the world's ten richest people. California is considered a global trendsetter in popular culture, innovation, and politics. It is the origin of the film industry, the hippie counterculture, the Internet, and the personal computer, among others. The San Francisco Bay Area and the Greater Los Angeles Area are widely seen as centers of the global technology and entertainment industries, respectively. California has a very diverse economy: fifty-eight percent of the state's economy is centered on finance, government, real estate services, technology, and professional, scientific and technical business services. Although it accounts for only 1.5 percent of the state's economy, California's agriculture industry has the highest output of any U.S. state. California borders Oregon the north, Nevada and Arizona to the east, and the Mexican state of Baja California to the south. The state's diverse geography ranges from the Pacific Coast in the west to the Sierra Nevada mountain range in the east, and from the redwood–Douglas fir forests in the northwest to the Mojave Desert in the southeast. The Central Valley, a major agricultural area, dominates the state's center. Though California is well-known for its warm Mediterranean climate, the large size of the state results in climates that vary from moist temperate rainforest in the north to arid desert in the interior, as well as snowy alpine in the mountains. What is now California was first settled by various Native American tribes before being explored by a number of European expeditions during the 16th and 17th centuries. The Spanish Empire then claimed it as part of Alta California in their New Spain colony. The area became a part of Mexico in 1821 following its successful war for independence but was ceded to the United States in 1848 after the Mexican–American War. The western portion of Alta California then was organized and admitted as the 31st state on September 9, 1850. The California Gold Rush starting in 1848 led to dramatic social and demographic changes, with large-scale emigration from the east and abroad with an accompanying economic boom.