Feature requirements for an enterprise wireless network

Article written by MobaProject

Wireless network access has gone from a convenience to an absolute necessity in the enterprise. Previously, companies set up wireless access around meeting rooms and open work areas. Now, employees expect complete coverage of offices and campuses. Unlike homes, enterprise wireless system selection is based on several features. Here are the most important:

Management

Enterprise wireless networks can range from 10 to as many as 100 access points. Managing anything over a few devices individually is impossible. This is why higher end wireless networking equipment comes with wireless controllers. Each controller manages several if not all of the access points. A single change at the controller is propagated to all the access points in the system.

Handoff

Handoff is the term used to describe a client moving from one wireless access point to another. The client device decides which access point to which it connects. This selection is based on signal strength (or lack thereof). The wireless controller manages this handoff by preventing clients from connecting to access points with low signal strength. This keeps a user constantly connected even as they move across a building.

Network isolation

For the sake of security, network isolation prevents two devices connected to the same network from communicating with each other. Proper wireless systems block this interaction only allow communication with the router or gateway. This usage is ideal for guest networks where outsiders connect to a corporate network.

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Amazon planning premium Alex speaker with a large screen

Article written by Cyburg

According to Mark Gurman, Amazon is developing a premium Echo like speaker with a screen. This is an effort to expand its lineup of Alexa enabled devices in order to capitalize on its surprise success.

According to people who are familiar with the matter, the screen will be approximate seven inches. It will also be a departure from the typical cylindrical shape of the current lineup of devices. Just like the Echo, the primary interface will be voice driven and will respond to the current set of commands.

The screen is expected to be introduced in order to provide access to content such as weather forecasts, calendars, and news etc. The screen and speaker will be at an angle so the screen will be visible when close by. The device will be powered by a modified version of Fire OS. It is also likely that the screen itself will be touch capable. There are no plans to change the current lineup and the new screen-based version will come at a higher price point.

This is another volley from Amazon in the growing battle by tech companies to own the living room. The Echo’s success was a surprise to everyone, including Amazon. Now there is a scramble from everyone to get a voice controlled device to the market. At the moment the market leader is Amazon. We are yet to see the market impact of the new entrant Google Home.

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Differentiating Physical Vapor Deposition from Chemical Vapor Deposition

Article written by The Digital Terror

PVD and CVD are both reliable techniques utilized in various industries today.

Physical Vapor Deposition (PVD) and Chemical Vapor Deposition (CVD) are two types of deposition techniques that are used to create very thin film layers of a material of choice onto a substrate. Mainly used in the semiconductor production industry, where thin layers are prevalent, both techniques have been making their way into any other industries as well like optics, solar panels, and others. This article will showcase the main differences between the two are the processes that they employ.

As their names imply, PVD utilizes physical forces to deposit while CVD uses chemical reactions. Regardless of the process, both of these techniques produce a thin film in the end.

Physical Vapor Deposition

During the PVD coating process, a source material is gasified through the process of evaporation, the application of electric power, lasers, and other techniques. This evaporated material will then condense onto the substrate, therefore creating the thin film. No chemical reactions occur throughout the process.

Chemical Vapor Deposition

CVD on other hand, uses a source material that is not as pure due to it being mixed with a volatile precursor material. This mixture is then injected within a chamber containing the substrate, where the deposition process occurs, similar to PVD thermal evaporation. Once the mixture adheres to the substrate, the precursor will then decompose, leaving behind a layer of the source material in the substrate. After this, the product is then removed from the chamber through gas flow. This process can also accelerated through the use of plasma, heat, and other processes.


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Different uses for portable air conditioning

Written by Movincool

Portable air conditioners are self-contained units that are quick to set up and install. They can be used for events or emergencies. Anywhere that requires some form of spot cooling. Here are a few examples of different use cases:

Outdoor events

Outdoor events like weddings and concerts are perfect uses for a spot cooler. Outdoor wedding marquees can be cooled on hot summer days and opened out in the evening. Concert and event back-end equipment and crews will need cooling while the event is run. Even what people assume to be impossible to cool events can usually be covered using one or many portable air conditioners.

Server rooms

These installations can be permanent or temporary for emergencies. Some server room designs are based on enclosed clusters of racks facing each other. These enclosures are perfect for portable air conditioners. In other designs, a portable unit can be brought in when there is a failure of the central air conditioner and system uptime has to be maintained. There have been times when multiple portable units have been used to cool an entire server farm while the main unit is under maintenance.

Workshops

Another good use case is for cooling industrial workplaces. Factories and other facilities sometimes cannot afford to cool an entire structure. In those cases, portable cooling can be used to cool areas where staff will be concentrated. This allows economical cooling while maintaining the high productivity levels that come with cooler workspaces.

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Movincool is a supplier of industrial cooling solutions and portable air conditioners. Look no further for future outdoor cooling needs.

 

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How to Understand Aviation Starting Units’ Voltage Ranges

Written by: Start Pac

Summary: Starting units are powerful aviation tools that can provide additional power when needed.

When it comes to selecting the right type of battery packs for your aircraft, aircraft start units are the ideal solution when it comes to the majority of models. With an enhanced design, it can immediately start an aircraft ranging from a small commercial plane to a major business airplane. These starting units are powerful, durable, and efficient for use. Here is a brief overview on what you need to know when it comes to choosing the right starting unit for your plane.

How to Find a Starting Unit

When finding a portable power supply for your aircraft, the first thing that you’ll need to know is that it comes in a range of voltages (12V, 24V, and 28V). It’s not only important that you choose the right one, but you need to consider what you are going to use the starting unit for. Do you need it solely for emergency purposes, or will you be using it multiple times throughout the day? By figuring this out, you’ll be able to narrow down which unit will work best with your lifestyle.

Discussing the Voltage of Starting Units

This is only the first step, you’ll also need to understand the various voltages. It’s highly recommended that you speak to a specialist in the department that you are purchasing from to ensure that it’ll function correctly with your aircraft. Although this piece of aircraft maintenance equipment is enough for an aircraft, there are certain cases where additional power is needed. Speak with a specialist in regards to this.

For small aircraft, the voltage requirement that you’ll need is 12V. There are various sizes and models, however the larger sizes are normally for larger aircrafts. Standard DC powered aircraft require 24V DC to start up. Most of the designs have a 24V battery within, therefore it requires a 24V unit to start. Now, when it comes to these units, you have choices. You can purchase a portable unit, or you can have one that is attached to a large trolley cart. 28V units are also available – although many of these are sole with the purpose of having peace of mind, as most aircraft will start up with a 24V current. However, there are a few aircraft models that are volt sensitive and will require a 28V unit to start. Discuss this with an expert beforehand so you won’t have any difficulties when using it.

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Netflix now allows downloads

Article written by SuperTechStore

In a surprise announcement by Netflix, a much-requested feature has finally been enabled: the ability to download TV shows and movies for offline viewing. In some respects, it is surprising that it took so long for this to become a reality. There are, however, some limits.

The first is that it is limited to certain shows only. For the moment this covers almost all of Netflix’s own originals and some others. For example, shows like Orange is the New Black, Narcos and The Crown are available right now. According to Netflix, we can expect the catalog of offline capable shows to grow as the licensing deals are negotiated.

Another limitation is that it is only possible on smartphone and tablets. For the moment, it cannot be done on desktop computers or even TV compatible systems.

In order to download a show, navigate to the episode list of the show. Supported shows will have a download symbol to the left of the play button. Clicking on this will start the immediate download of that episode and will be enabled for offline playback.

With Netflix expected to produce nearly 50 shows per year for the next two years, the catalog of offline capable shows will grow. In order to avoid losing the licensing revenue from Netflix, it is also quite plausible that other networks will also allow some of their shows to be downloadable.

Netflix will be rolling out the latest version of its app which is required to download offline capable shows.

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