Think Lean

Lean manufacturing, lean enterprise, or lean production, often simply, “lean“, is a production practice that considers the expenditure of resources for any goal other than the creation of value for the end customer to be wasteful, and thus a target for elimination. Working from the perspective of the customer who consumes a product or service, “value” is defined as any action or process that a customer would be willing to pay for.

Essentially, lean is centered on preserving value with less work. Lean manufacturing is a management philosophy derived mostly from the Toyota Production System (TPS) (hence the term Toyotism is also prevalent) and identified as “lean” only in the 1990s.[1][2] TPS is renowned for its focus on reduction of the original Toyota seven wastes to improve overall customer value, but there are varying perspectives on how this is best achieved. The steady growth of Toyota, from a small company to the world’s largest automaker,[3] has focused attention on how it has achieved this success.

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Google Privacy Policy

We’re getting rid of over 60 different privacy policies across Google and replacing them with one that’s a lot shorter and easier to read. Our new policy covers multiple products and features, reflecting our desire to create one beautifully simple and intuitive experience across Google.
We believe this stuff matters, so please take a few minutes to read our updated Privacy Policy and Terms of Service at http://www.google.com/policies. These changes will take effect on March 1, 2012.
Got questions?
We’ve got answers.
Visit our FAQ at http://www.google.com/policies/faq to read more about the changes. (We figured our users might have a question or twenty-two.)

States Move on Privacy Law

Over two dozen privacy laws have passed this year in more than 10 states, in places as different as Oklahoma and California.
For Internet companies, the patchwork of rules across the country means keeping a close eye on evolving laws to avoid overstepping.

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Control de versión

Los repositorios administrados de documentos son importantes en el trabajo en equipo cuando varios miembros deben trabajar de manera simultánea o coordinada sobre los mismos documentos, pero también es útil en el caso de lobos solitarios. Control de versión es el arte de administrar cambios. Es una herramienta crítica en el desarrollo de software.

Algunos sistemas de control de versión son administradores de software (Software Configuration Management). Estos sistemas están especí­ficamente diseñados para administrar árboles de código fuente y soportan el ciclo de vida de aplicaciones. Otros sistemas son repositorios generales de documentos.

Un repositorio de información para control de versión guarda un registro de los cambios hechos tanto a los datos como a la estructura misma de archivos. Un cliente puede no solo ver la última versión de los documentos guardados, sino también estados previos del sistema de archivos. Por ejemplo un cliente puede hacer consultas del tipo ¿Qué cambios se hicieron en un documento en la última semana?

El problema fundamental es por un lado ¿Cómo compartir información y coordinar modificaciones concurrentes a un grupo de documentos? Y complementariamente ¿Cómo recuperar estados anteriores de los documentos cuando una serie de cambios resultan inapropiados o se requieren variaciones de base común?

Un enfoque para evitar conflictos es reservar-modificar-cambiar (lock-modify-unlock). Este enfoque no siempre garantiza la integridad o coherencia de un sistema cuando se trabaja con múltiples documentos y serializa el trabajo innecesariamente cuando se pudiera hacer cambios independientes. Otro enfoque es copiar-modificar-integrar (copy-modify-merge). El repositorio puede asistir en el manejo de documentos y sus cambios, pero una persona necesita hacer el análisis de si un conjunto de cambios es valido y los miembros de un equipo deben mantener una buena comunicación.

En el caso particular del software algunas de las áreas que soporta un SCM son:

        • Administración de versiones múltiples, permitiendo a usuarios y desarrolladores reportas defectos y cambios con relación a versiones históricas.

       

    • Administración de equipos de desarrollo, permitiendo que varios programadores trabajen en un mismo archivo e integrando los cambios.
    • Auditorias de cambios.

 

Los sistemas de control de versión trabajan con dos elementos base: áreas de trabajo y repositorios. Las áreas de trabajo es donde se hacen cambios y el repositorio es el lugar donde se guardan los documentos de referencia que sincronizan el trabajo de todos y define el estado de la información. El repositorio guarda metadata que permite rastrear cambios y versiones.
El paradigma central de control de versión es Pedir/Aplicar (check out/commit). Todos los documentos se almacenan en el repositorio. El programador registra una copia en su área de trabajo y procede a aplicar cambios a su copia. Cuando los cambios son estables, se aplican al repositorio de acuerdo a polí­ticas de administración de cambios y resolución de conflictos.

Dos conceptos importantes en la administración de cambios son ramas (branches) y etiquetas (tags). La ramificación del código permite mantener el desarrollo del sistema y liberar versiones de acuerdo a plataformas, características y pruebas; O para pruebas de código experimental. Etiquetas son similares a ramas pero puntos de referencia en la misma línea de desarrollo, no a una variante del mismo.

El abuelito y punto de referencia de los sistemas de control de versión es CVS, referenciado a scripts escritos por Dick Grune y publicados en comp.sources.unix en diciembre de 1986.

Sistemas de control de versión:
CVS
Subversion
Perforce (p4)
BitKeeper
VOODOO Server
ClearCase
RCS (Revision Control System)

Quick Response Code

QR code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed for the automotive industry in Japan; a barcode is an optically machine-readable label that is attached to an item and that records information related to that item: The information encoded by a QR code may be made up of four standardized types (“modes”) of data (numeric, alphanumeric, byte / binary, Kanji) or, through supported extensions, virtually any type of data.[1]

The QR Code system has become popular outside the automotive industry due to its fast readability and greater storage capacity compared to standard UPC barcodes. Applications include product tracking, item identification, time tracking, document management, general marketing, and much more.[2]

A QR code consists of black modules (square dots) arranged in a square grid on a white background, which can be read by an imaging device (such as a camera) and processed using Reed-Solomon error correction until the image can be appropriately interpreted; data is then extracted from patterns present in both horizontal and vertical components of the image.[2]


PHP QR Code is open source (LGPL) library for generating QR Code, 2-dimensional barcode. Based on libqrencode C library, provides API for creating QR Code barcode images (PNG, JPEG thanks to GD2). Implemented purely in PHP, with no external dependencies (except GD2 if needed).

Some of library features includes:

  • Supports QR Code versions (size) 1-40
  • Numeric, Alphanumeric, 8-bit and Kanji encoding. (Kanji encoding was not fully tested, if you are japan-encoding enabled you can contribute by verifing it 🙂 )
  • Implemented purely in PHP, no external dependencies except GD2
  • Exports to PNG, JPEG images, also exports as bit-table
  • TCPDF 2-D barcode API integration
  • Easy to configure
  • Data cache for calculation speed-up
  • Provided merge tool helps deploy library as a one big dependency-less file, simple to “include and do not wory”
  • Debug data dump, error logging, time benchmarking
  • API documentation
  • Detailed examples
  • 100% Open Source, LGPL Licensed

General packet radio service (GPRS)

GPRS (General Packet Radio Service) is a very widely-deployed wireless data service, available now with most GSM networks.

GPRS offers throughput rates of up to 40 kbps, enabling mobile handsets to access online services at a similar speed to a dial-up modem, but with the convenience of being able to connect from almost anywhere.

GPRS enables people to enjoy advanced, feature-rich data services, such as e-mail on the move, multimedia messages, social networking and location-based services.

General packet radio service (GPRS) is a packet oriented mobile data service on the 2G and 3G cellular communication system’s global system for mobile communications (GSM). GPRS was originally standardized by European Telecommunications Standards Institute (ETSI) in response to the earlier CDPD and i-mode packet-switched cellular technologies. It is now maintained by the 3rd Generation Partnership Project (3GPP).[1][2]

GPRS usage is typically charged based on volume of data transferred, contrasting with circuit switched data, which is usually billed per minute of connection time. 5 GB per month for a fixed fee or on a pay-as-you-use basis. Usage above the bundle cap is either charged per megabyte or disallowed.

GPRS is a best-effort service, implying variable throughput and latency that depend on the number of other users sharing the service concurrently, as opposed to circuit switching, where a certain quality of service (QoS) is guaranteed during the connection. In 2G systems, GPRS provides data rates of 56–114 kbit/second.[3] 2G cellular technology combined with GPRS is sometimes described as 2.5G, that is, a technology between the second (2G) and third (3G) generations of mobile telephony.[4] It provides moderate-speed data transfer, by using unused time division multiple access (TDMA) channels in, for example, the GSM system. GPRS is integrated into GSM Release 97 and newer releases.

finnix

Finnix is a self-contained, bootable Linux CD distribution (“LiveCD”) for system administrators, based on Debian. You can mount and manipulate hard drives and partitions, monitor networks, rebuild boot records, install other operating systems, and much more. Finnix includes the latest technology for system administrators, with Linux kernel 3.0, x86 and PowerPC support, hundreds of sysadmin-geared packages, and much more. And above all, Finnix is small; currently the entire distribution is over 400MiB, but is dynamically compressed into a small bootable image. Finnix is not intended for the average desktop user, and does not include any desktops, productivity tools, or sound support, in order to keep distribution size low.

Google Nexus

Google Nexus is a line of mobile devices using the Android operating system produced by Google in conjunction with an original equipment manufacturer (OEM) partner. Devices in the Nexus series[1] do not have manufacturer or wireless carrier modifications to Android (such as custom graphical user interfaces), and have an unlockable bootloader[2] to allow further development and end-user modification.[3] Nexus devices are the first Android devices to receive updates to the operating system.[4][5][6] The Galaxy Nexus is one of the few smartphones recommended by the Android Open Source Project for Android software development.[7] As of November 2012[update], the latest devices in the series are the Nexus 4 phone by Google and LG, and the Nexus 7 and Nexus 10 tablet computers by Google with Asus and Samsung respectively.

rooting

Is the allure of being a superuser tempting you? Android rooting opens up a world of possibility, but it can also void your warranty, or even leave you with a bricked device. The important thing is to be careful. Read up about what you are going to do before you begin. Make sure that you backup your data. Follow the instructions to the letter. Manufacturers and carriers have a vested interest in dissuading you from rooting. If you’re careful, the risk is minimal, and the potential benefits are impressive. Let’s take a closer look.

Around since the early days of the T-Mobile G1 (HTC Dream), rooting can add functionality to a phone and often extend the life of the device. The T-Mobile G1, for instance, was officially supported through Android 1.6 Donut, but if you rooted the phone, you could load an alternative developer-made version of the OS that offered most of Android 2.2 Froyo’s features.

I’m going to share some of rooting’s benefits and risks, where to find some great replacements for the default Android OS, and a few other tips. If you have any of your own that I haven’t covered here, please add them to the comments below.

What is rooting?

Rooting, in a nutshell, is the process that provides users with full administrator control and access to an Android smartphone or tablet. Similar to “jailbreaking” an iOS device, this is often done in order to bypass carrier or handset maker limitations or restrictions. Once you achieve “root access,” you can replace or alter applications and system settings, run specialized apps, and more.

One of the more common reasons to root a phone is to replace the operating system with a ROM, another developer’s version of the OS that also gives you more control over details. In rooting culture, we’d call that “flashing a custom ROM.”

The process of rooting an Android phone varies for each device, but seems to have been streamlined over time. Google’s Nexus line of phones, such as the LG-made Nexus 4, appeals to developers and techie types and are among the most often rooted models. With that in mind, you’ll also find that popular devices like the Samsung Galaxy S3 and HTC One X+ have plenty of custom ROMs to choose from.

Note that rooting will void the device warranty; however, flashing a stock ROM can revert things back to their original state.

Why root?

There are multiple reasons for you to consider rooting your Android handset, some more obvious than others. Chief among the benefits is the ability to remove any unwanted apps and games that your carrier or phone maker installs before you ever unwrap your phone. Rather than simply disabling these bloatware titles, which is often the best you can do within Android, rooting can grant you a full uninstallation. Deleting apps you’ll never use can also free up some additional storage capacity.

Another main benefit of rooting is to enable faster platform updates. From the time it takes for Google to announce a new version of Android to the time your carrier pushes it to your device can be on the order of weeks, months, or even longer. Once rooted, you can often get some of the new platform features through custom ROMs in short order. This could, for some users, add years of life to an Android handset — rather than buy a new phone, flash a new ROM.

Other reasons to root a phone include being able to perform complete device backups, integrate tethering and mobile hot-spot features, and extend the device’s battery life through newfound settings and controls.

How to root your Android

What are the risks?

As I mentioned above, rooting your device can void your warranty. This is perhaps the biggest risk associated with playing around with your phone. If you run into big trouble and you’ve added a custom ROM build, your manufacturer and carrier likely won’t help you out.

In most cases, you’ll be able to overturn any ROM you flash, returning to the phone’s stock Android OS with as much ease as you installed the new ROM in the first place. However, a word of caution. If you’re not careful, or don’t follow the steps properly, you could end up with a glorified paperweight. Yes, I’m talking about “bricking” your device. It’s vitally important that you exercise caution when attempting to root your phone and pay close attention to what you’re doing.

Stick to the more reputable sources for help and feedback, and look for the most recent news about ROMs and your particular Android device. Along those lines, you’ll also want to ensure that you read through everything you can before starting down this road. If you’re in a forum thread, skim the replies to see if there are issues or problems with your particular handset.

Helping hands

For help with rooting, I would first recommend XDA developers, AndroidCentral forums, Androidforums, and Rootzwiki. I also suggest checking Google+ as a good source for rooting and modding news and feedback. The rooting scene is not some secret underground Fight Club; you’ll find plenty of documented help for rooting your phone. Filter your results by date, read through the details, and understand what it is you are about to do.

CyanogenMod is one of the oldest and feature-rich ROMs available.(Credit: CyanogenMod)

More about ROMs

For all practical purposes, (custom) ROMs are replacement firmware for Android devices that provide features or options not found in the stock OS experience. Often built from the official files of Android or kernel source code, there are more than a few notable ROMs to consider. Among the more popular custom ROMs are CyanogenMod, Paranoid Android, MIUI, and AOKP (Android Open Kang Project). There are, of course, countless others to check out, with more arriving almost daily.

In terms of sheer support and development, CyanogenMod is the clear leader in this field. The number of supported devices is unparalleled and the community has long rallied around this ROM. This is not meant to say that it’s necessarily the “best” ROM; beauty is in the eye of the beholder.

Closely resembling the stock Android experience, CyanogenMod has been known to introduce features that later end up in official builds of Android. As of today there are more than 4.2 million active installations of CyanogenMod releases, with v10.1 (based on Android 4.2 Jelly Bean) being the latest.

Paranoid Android is one of the more popular custom ROMs for Android.(Credit: Paranoid Android)

Where to look for ROMs

Forums are going to be a great place to keep yourself plugged in, but the larger ROM developers will provide their own Web sites. Aside from the aforementioned custom ROMs, others that have gained a strong following include SynergyROM, Slim Bean, LiquidSmooth, RevoltROM, and Xylon. Be warned: talking about ROMs can often result in heated debate as to which is better or offers more options.

Noteworthy apps

Aside from installing custom ROMs, rooting your phone opens the door to installing new apps and gaining extended device management and security functionality beyond what comes with the usual Android OS experience.

Should you decide to not load a new ROM interface, you can still install apps that add new levels of functionality to your rooted Android phone. Today’s more popular titles include ROM Toolbox Pro, Titanium Backup, Touch Control, Cerberus anti-theft, and SetCPU. The appeal of each will vary depending upon on how much you want to tweak your Android experience.

For those of you who plan to flash ROMs on a regular basis, I recommend starting with ROM Manager. This utility lets users manage backups and recoveries, install ROMs, and other handy functions. While it is available as a free app, the premium client has ROM update notifications, nightly ROM downloads, set automatic backups, and other features.

ROM Toolbox Pro is a handy utility for rooted users.(Credit: JRummy Apps)

Backup plans

When it comes to rooting your phone, it is always a good idea to have backup plans in place. After all, you’ll need something to fall back on should you run into an issue with an untested or experimental ROM. While Titanium Backup seems to be the most popular, Carbon has gained quite a fan base of late. Regardless of which route you take, it’s important to create a backup and test it before you apply a custom ROM.

Become familiar with the process and make sure that you’ll be able to restore things in the event of a catastrophe. It might take some practice and you could spend more time than you’d like creating this backup, but it could be all that stands between you and expensive phone repair.

Indeed, there is plenty to consider when it comes to rooting your Android phone. Rest assured, though, that no matter how daunting the task might seem, there’s a large community of users out there who will have your back. And while the actual rooting process varies with each handset model, on the whole, it isn’t as difficult as it may sound.

If you’ve read through this post and still don’t know if rooting is for you, my suggestion is to give it more time and mull it over. Replacing the default Android OS certainly isn’t for everyone and there’s quite a bit more on the topic besides. For many people, myself included, the rewards of tweaking your Android phone to have it exactly the way you want it are worth the risk.

What is rooting?

If you’re an Administrator on a Windows machine, you have access to the entire operating system and you can do whatever you like. That’s essentially what happens if you root your Android device. With root access, you can get around any restrictions that your manufacturer or carrier may have applied. You can run more apps; you can customize your device to a greater degree; and you can potentially speed it up in a variety of ways.

The process involves backing up your current software and then flashing (installing) a new custom ROM (modified version of Android).

Why would you root?

One of the most obvious incentives to root your Android device is to rid yourself of the bloatware that’s impossible to uninstall. You’ll be able to set up wireless tethering, even if it has been disabled by default. You can also access your entire file system, install special apps that require a root, and flash custom ROMs, which can add extra features and streamline your phone or tablet’s performance. A lot of people are tempted by the ability to completely customize the look of their phones. You can also manually accept or deny app permissions.

You won’t find a lot of amazing must-have apps when you root, but there are enough to make it worthwhile. For example, some apps allow you to automatically backup all of your apps and all of their data, completely block advertisements, create secure tunnels to the Internet, overclock your processor, or make your device a wireless hotspot.

Why wouldn’t you root?

There are essentially three potential cons to rooting your Android.

  • Voiding your warranty: Some manufacturers or carriers will use rooting as an excuse to void your warranty. It’s worth keeping in mind that you can always unroot. If you need to send the device back for repair, simply flash the original backup ROM you made and no one will ever know that it was rooted.
  • Bricking your phone: Whenever you tamper too much, you run at least a small risk of bricking your device. This is the big fear everyone has. The obvious way to avoid it happening is to follow instructions carefully. Make sure that the guide you are following works for your device and that any custom ROM you flash is designed specifically for it. If you do your research and pay attention to feedback from others, bricking should never occur.
  • Security risks: Rooting may introduce some security risks. Depending on what services or apps you use on your device, rooting could create a security vulnerability. For example, Google refuses to support the Google Wallet service for rooted devices.

How to root your Android

Before you actually try to root your device, make sure that you do some reading. The best place to find discussions about rooting, guides, and custom ROMs is definitely the XDA Developers Forum. Look for a thread on your specific device and you’re sure to find a method that has worked for other people. It’s worth spending some time researching the right method for your device.

Preparation for root

You’ll want to ensure that your device is fully charged before you begin. You’ll also need to turn USB debugging on. On the Galaxy S3 you’ll find it in Menu > Settings > Developer options and then check the box next to USB debugging. You will likely be plugging your device into your computer in order to root it.

Most Android rooting methods require you to install some software on your computer. It’s likely you’ll need to install the Android SDK. You may find other software is required. Make sure you follow the instructions and install all of it before proceeding.

One-click rooting

One of the easiest methods of rooting, which also supports a long list of devices, is SuperOneClick. You’ll find clear instructions, including a video, on how to use it at this XDA Developers SuperOneClick thread.

You will need to install some software to prepare, but the actual rooting process is one click. It will only take a few minutes to complete and then you’ll need to restart your Android device.

There is software out there that claims to provide one click rooting with no extra installs, but you should not have to pay to root your device and it’s very important to be wary about the method you choose. If in doubt, do more research. The XDA Developers forum is the most trustworthy source for rooting guides.

Your specific device

The reason rooting isn’t more straightforward is that all Android devices are not created equal. There are significant differences between Android smartphones, between manufacturers, and even between carrier specific versions of the same phone model. Make sure that any rooting guide or custom ROM you intend to use does support your specific device or you are asking for trouble.

Once you have found the right guide for your phone or tablet, it’s simply a case of working through the listed steps methodically. It can be a complicated procedure and it can take a while. Here’s an example guide for rooting the Samsung Galaxy S3. It can appear intimidating at first glance, but provided you follow it step-by-step, it should be a pain-free process. You can post questions in the XDA Developers forum if you run into trouble.

To root or not to root

Gaining full root access to your Android device can be thrilling, especially if you want to tinker with settings and customize your device. How much it changes your experience depends largely on the device you have. If you have a shuttered device, like a Kindle Fire tablet, then it’s a great way to get the full Android experience.

The potential benefits for all Android users include improved battery life, root-only apps, custom ROMs, overclocking, an end to bloatware, improved performance, and the ability to upgrade your phone when you want. If you aren’t excited at the prospect of any of these things, rooting probably isn’t for you.

Read more: http://www.digitaltrends.com/mobile/how-to-root-android/#ixzz2VG0X985Z
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