Adware can be blocked by installing antivirus software, using a pop-up blocker, and reading software licenses before installation. Adware can also function as spyware, tracking browsing and risking private information. Avoid installing software without reading details and use a web browser with a pop-up blocker. While adware doesn’t destroy your computer in the same way […]
Proxy servers allow users to bypass internet restrictions, but can be blocked by using proxy server blocking software. This is important for parents and workplaces to prevent access to unsuitable websites. Proxy server blockers can be found in various applications, some of which are free. Many parents and workplaces try to limit Internet use by […]
Network block device (NBD) is a remote data storage technique used on Linux and Unix systems, allowing a client to access a data store on a remote system as if it were a local disk drive. NBD is similar to NFS but uses TCP for more accurate data transfer. NBD can also be used for […]
Block ciphers encrypt data in chunks and are more secure than stream ciphers. Symmetric encryption uses a single key, while asymmetric encryption uses two keys. Popular block ciphers include DES, AES, and IDEA. AES is more secure than DES and uses three different keys. IDEA uses a 128-bit key and is free for non-commercial use. […]
Block coding is a form of forward error correction that converts messages into specific codes and sends them as a block of data with a predetermined length. This reduces errors caused by noise during transfer and allows messages to be decipherable when they arrive. Hamming weight and distance are used to determine the likelihood of […]
Left bundle branch block (LBB) affects the heart’s electrical signals, causing delayed contraction in the left side of the heart. Symptoms may include fainting, and an electrocardiogram (ECG) is used to diagnose it. Treatment involves addressing underlying heart conditions, and patients may need an artificial pacemaker or angioplasty. The outlook is often positive, but LBB […]
A file control block (FCB) is a data structure used by an operating system to maintain the state of a data file. It contains information about the file, including its name, location, and dynamic information such as the current address within the file being read. The FCB helps prevent conflicting operations on the file and […]
Cipher locks are programmable keypads used to limit access to sensitive areas. The Cypher Lock® by Continental Instruments is a specific type. They can have four or five buttons and be mechanical or electronic. They can be combined with alarms and time settings for added security. A lock refers to a number of types of […]
A pillow block bearing is a type of plain bearing housed in a cast mounting bracket that provides external housing for the bearing. It is designed for low torque, low load situations and clean environments. The plummer block is similar but designed for higher loads and corrosive environments. Both types of bearing housings are bolted […]
The AV lock is a device used in drilling and machining processes to securely hold round workpieces of wood or steel. It eliminates errors and distortion, and can be magnetic or use clamps. It can also be used to hold pipes, create flared fittings, and fix fiber optic cable. The AV lock is a device […]
Block diagrams are graphical representations of systems that can be used to explain processes in various industries. They are similar to flowcharts but more generalized. Lines can be drawn to represent inputs, outputs, or alternative choices. Block diagrams can be used to illustrate computer programs or map out a process as a top-down diagram. A […]
Bifascicular block is a heart condition where two bundles of vascular tissue fail to send the appropriate signal, leading to an irregular heartbeat. It can be a birth defect or caused by heart events, medication, or vascular conditions. It can cause no symptoms or dizziness, chest pain, or shortness of breath. It can be diagnosed […]
A lockout is a security measure used in prisons and other facilities to prevent escapes or during emergencies. It involves locking all doors and cells. Lockdowns can also occur in other settings, such as retail stores during missing child situations, or metaphorically in areas under martial law or with increased security measures. A lockout is […]
Atrioventricular block is a heart condition where signals from the heart’s natural pacemaker are not routed correctly, causing a slow and/or irregular heartbeat. Treatment options include artificial pacing, and outcomes vary based on the severity of the blockage and the treatment provided. Symptoms may include nausea, shortness of breath, dizziness, fainting, and chest pain. An […]
A lock limit occurs when the trading price of a futures contract reaches the limit price recognized by the exchange, excluding any offers above or below that limit. It provides protection for investors and helps to minimize potential losses. The limit price is determined by the exchange and is based on various criteria. A lock […]
Third-degree heart block is a condition where the heartbeat becomes disorganized, often caused by ischemic heart disease. Treatment usually involves an artificial pacemaker, and exercise and a balanced diet can help reduce the risk of developing heart problems. Third-degree heart block is a heart disorder in which the heartbeat becomes disorganized because the pacemaker signal […]
Blocking phone numbers is easy thanks to improved technology. The National Do Not Call Registry can stop telemarketing calls, and private individuals can be blocked with call screening or blocking services. Mobile phones can use caller ID, and numbers can be hidden by dialing *67. Selective blocking is possible with *60, but may come with […]
A block grant is a form of government funding where a centralized government allocates funds to a regional government with little or no stipulations on how the money is spent. This allows local legislators to prioritize and determine where the funds are best spent. It is different from categorical grants, which are issued for specific […]
Block limits are a form of general limits that limit the total amount of compensation an insurance company will pay for claims associated with covered events that occur on a single city block. The limits are based on factors such as property, buildings, business operations, and crime rates. While not as common as in the […]
Block trades involve large volumes of securities, typically handled by institutions like banks and universities. They are usually managed through a block house, which specializes in such trades and has relationships with other companies. Block trading should be done with care as it can affect market value. Stockbrokers who specialize in block trading focus on […]
