The use of technology in construction has been fundamental in the increase of efficiency in all facets of the industry. Many solutions exist about how best to back up your data: Go with what suits you most but remember to also protect your computer from petty thieves. If you opt for local backup, make sure your storage is quite secure, otherwise you may want to entrust your data with cloud services. There has been a great deal of talk lately (from people with a variety of political points of view) about the prevalence and dangers of fake online news stories. This issue, however, is nothing new. For as long as there has been an internet, it has been common knowledge that much of what we come across online cannot be trusted. – Stabilitas, Linux sangat luar biasa stabil, jika dikonfigurasi dengan benar, system linux akan hidup terus menerus hingga hardwarenya tidak memadai (rusak), lain dengan windows yang memerlukan reboot berkala untuk menjaga stabilitas. Salah satu yang mendasari stabilitas ini adalah penomoran versi dari shared libraries, kebanyakan aplikasi windows menginstall versi-versi baru dari dynamic link libraries (DLL), yang mengakibatkan aplikasi lain yang menimpa versi lain dari DLL tersebut tidak berfungsi dengan semestinya. Linux juga mewarisi tradisi UNIX dengan mendukung adanya file permission (izin file), yang dapat mencegah pengubahan atau penghapusan file tanpa izin dari pemiliknya, karena itu, virus pada dasarnya tidak dikenal di dunia linux. I’m keeping my landline and I don’t own a cell phone. I worked as a tech support person for a cable company. I know how easy it is for those phones to go down versus keeping a reliable landline. One of Thomas Edison’s main rivals was George Westinghouse Jr., a pioneer of the electrical industry. In 1886 he founded Westinghouse Electric and Manufacturing Company to pursue the technology of alternating current (AC). An alternating current power system allowed voltages to be “stepped up” by a transformer for distribution, which reduced power losses, and then “stepped down” by a transformer for consumer use. He thought that Edison’s power network based on low-voltage direct current was too inefficient to be scaled up to a large size. In 1885 Westinghouse purchased power transformers developed by Lucien Gaulard and John Dixon Gibbs. Transformers were not a new invention, however this design was one of the first that was able to handle large amounts of power, yet was still easily manufactured. Using these transformers and a Siemens alternating current generator, he began experimenting with alternating current networks. Westinghouse worked to perfect the transformer design and build a practical alternating current power network with the help of William Stanley and Franklin Leonard Pope. In 1886 Westinghouse and Stanley installed the first multiple-voltage alternating current power system. The network was driven by a hydropower generator that produced 500 volts. The voltage was stepped up to 3,000 volts for distribution, and then stepped back down to 100 volts to power electric lights. This device made it possible to spread electric service over a wide area and allowed for the availability of alternating current at different voltages, forming the basis of modern electrical power distribution. Over the next year 30 more alternating current lighting systems were installed, but the method was limited because they lacked an efficient metering system and an alternating current electric motor. In 1888, Westinghouse and his engineer Oliver Shallenberger created a power meter that would be more effective and the same basic meter technology remains in use today.
Sensors are specialized electronic devices that detect changes in quantities such as temperature , electrical power levels, chemical concentrations, physical position, fluid flow, or mechanical properties like velocity or acceleration When a sensor responds to change, it usually requires a transducer to convert the quantity the sensor has measured into electrical signals that are translated into printouts, electronic readouts, recordings, or information that is returned to the device to control the change measured. Specialized resistors and capacitors are sometimes used as combined sensors and transducers. Variable resistors respond to mechanical motions by changing them to electrical signals. The thermistor varies its resistance with temperature; a thermocouple also measures temperature changes in the form of small voltages as temperatures are measured at two different junctions on the thermocouple. Usually, sensors produce weak electronic signals, and added circuits amplify these. But sensors can be operated from a distance and in conditions such as extreme heat or cold or contaminated environments where working conditions are unpleasant or hazardous to humans. Kirsten Nunez, MS is a health and lifestyle journalist based in Beacon, New York. Since 2014, she has contributed to over 15 digital publications. Her work has appeared on nutrition and health websites such as SparkPeople, CureJoy, and Healthline. Kirsten has a Master of Science in Nutrition and Bachelor of Science in Dietetics. The body loses water through urine, sweat and physiological functions such as digestion. Even a modest restriction in water intake can decrease your total water volume and impact your health. A mild fluid decline of 2 percent can impact your ability to concentrate, according to the June 2003 issue of the “European Journal of Clinical Nutrition.” Severe dehydration makes it hard for your organs to function and impairs your brain, kidneys and cardiovascular system. Symptoms of dehydration include low urine output, lethargy, no tears, dry mouth and sunken eyes. Clearly virtualisation is here to stay. In fact, it never left. Virtualisation technologies date from the 1960s. Hypervisors were developed at that time. As with all things IT, what goes around, comes around. IBM, which pioneered virtualisation back in the 1960’s for its mainframe systems, also punched its ticket to ride the XEN train. They announced recently that the company would support XEN on its server and blade platforms that run on Intel and AMD processors, and that its middleware will also support the virtualisation technology.