Abstract: A method and a system for pollutant identifying and early warning based on cluster analysis include steps of: installing multiple high-definition cameras on a river or a sluice dam, capturing pollutant images in front of the sluice dam at certain intervals, and transmitting the pollutant images captured by the high-definition cameras to a computer; reading the pollutant images transmitted to the computer; extracting a main pollutant color in the pollutant images through cluster analysis; calculating a difference between the main pollutant color and RGB data in a pollutant color gamut database, and setting an aberration threshold to identify the pollutant color; performing scale conversion with two sets of common point image pixel coordinates and actual plane coordinates to calculate a current pollutant area; and judging whether a polluted area exceeds a critical value according to a preset pollutant area threshold, thereby realizing early warning.

Abstract: A method and a system for pollutant identifying and early warning based on cluster analysis include steps of: installing multiple high-definition cameras on a river or a sluice dam, capturing pollutant images in front of the sluice dam at certain intervals, and transmitting the pollutant images captured by the high-definition cameras to a computer; reading the pollutant images transmitted to the computer; extracting a main pollutant color in the pollutant images through cluster analysis; calculating a difference between the main pollutant color and RGB data in a pollutant color gamut database, and setting an aberration threshold to identify the pollutant color; performing scale conversion with two sets of common point image pixel coordinates and actual plane coordinates to calculate a current pollutant area; and judging whether a polluted area exceeds a critical value according to a preset pollutant area threshold, thereby realizing early warning.

Abstract: Described herein are techniques related to a wireless enhanced projector (WEP) that is utilized by one or more devices, such as a mobile phone, a cellular phone, a Smartphone, a personal digital assistant, a tablet computer, and the like. In an implementation, the one or more devices may connect to the WEP through a server device that may be connected and/or integrated with the WEP. In this implementation, at least one of the one or more devices may be configured to be a super-user device (i.e., moderator or administrator device), while the rest of the one or more devices may be regular client devices.

Abstract: Described herein are techniques related to a wireless enhanced projector (WEP) that is utilized by one or more devices, such as a mobile phone, a cellular phone, a Smartphone, a personal digital assistant, a tablet computer, and the like. In an implementation, the one or more devices may connect to the WEP through a server device that may be connected and/or integrated with the WEP. In this implementation, at least one of the one or more devices may be configured to be a super-user device (i.e., moderator or administrator device), while the rest of the one or more devices may be regular client devices.

Abstract: Hackers and other malicious users are prevented from injecting harmful SQL into a database and from retrieving confidential data. SQL statements formed by an application in response to user input (e.g., user Id and password), are scanned and compared to patterns of SQL commands and data embodied in one or more anti-SQL injection policies. If there is a match, the SQL statement is in violation of the policy. A severity level of the violation may be checked, for example, it may be determined whether the violation is critical or non-critical (normal). Different actions are taken depending on the severity of the violation. If the violation is critical, the SQL statement is dropped and the administrator is notified immediately and a trace of the violation is provided. If the violation is not critical, the data is retrieved and is compared against data in a confidential data registry. If any of the data is found to be confidential, that data is encrypted and then sent to the hacker.