Tampilkan postingan dengan label Source. Tampilkan semua postingan
Tampilkan postingan dengan label Source. Tampilkan semua postingan
Minggu, 14 Agustus 2011
Rabu, 10 Agustus 2011
Selasa, 09 Agustus 2011
Senin, 08 Agustus 2011
Sabtu, 30 Juli 2011
Selasa, 26 Juli 2011
Open Source and the Democratization of IT
The latest BriefingsDirect podcast discussion centers on how the role and impact of integration has shifted, and how a more comprehensive and managed approach to integration is required, thanks to such major trends as cloud, hybrid computing and managing massive datasets. Moreover, the tools that support enterprise integration need to be usable by more types of workers, those that are involved with business process activities and data analysis. The so-called democratization of IT effect is also progressing into the world of applications and data integration.
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Senin, 25 Juli 2011
Jumat, 22 Juli 2011
CFP: Legal and Licensing Aspects of Open Source at OWF 2011
Licensing is an important component of every free software and open source project. This is especially true as an increasing number of corporations are adopting and distributing open source applications and code. This track considers various legal and licensing aspects of open source, both from a community and a corporate perspective.
This track is a great opportunity for you to discuss legal and licensing aspects of open source with lawyers, decision makers, open source developers and other people who are interested in legal aspects of open source.
Here is a non-exhaustive list of topics we would like to cover:
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Sabtu, 02 Juli 2011
Open Source Project Brings Android Apps to iOS with 'Hello World' Panache
Ever think you'd see Android applications executing natively within iOS? A project called "in-the-box" is working toward this goal, and it's hoping to provide developers an easy path for submitting their software to the App Store. This means Apple users could get a crack at exotic titles from Google's turf, all without jailbreaking their devices. The magic is performed by porting the Dalvik virtual machine and Gingerbread API's to iOS, which developers must bundle inside their applications -- something that's already resulted in a Java-based "Hello world" app (see it in action after the break).
Sabtu, 25 Juni 2011
Best Practices for Making Source Code Available Under the GPL
When you release code under the GNU General Public License (GPL), you undertake a specific set of obligations. Many of these obligations, such as providing a copyright notice and a copy of the GPL version you are using, are relatively simple.
When you release code under the GNU General Public License (GPL), you undertake a specific set of obligations. Many of these obligations, such as providing a copyright notice and a copy of the GPL version you are using, are relatively simple. However, the obligation to provide source code with the object code is more complex, because you have several choices about how to fulfill it – and the choice you make can cause ongoing problems, especially if you are not set up to administer it.
Can Project Harmony Streamline Rules for Open Source Contributions?
According to the Project Harmony page: "Project Harmony is a community-centered group focused on contributor agreements for free and open source software (FOSS). As a group, we represent a diverse collection of perspectives, experiences, communities, projects, non-profit and for-profit entities. In that diversity, we share a common belief in the future of FOSS, and a common interest in using our skills (whether they're legal, organizational, editorial, technical, or otherwise) to the benefit of collaborative FOSS communities." The...
OStatic's open source theme of the day today is whether open source contributions are tracking with increases in open source usage, especially by businesses and organizations. In this post, we discussed how many organizations that now use open source aren't giving back at all. On this topic, one of the more interesting projects currently running isn't an open source software development project, but rather a coordinated effort to establish rules and guidelines for making contributions to open source. It's called Project Harmony, is heavily backed by Canonical, and on June 23 its first year of notable effort to establish rules for open source contributions will arrive.
According to the Project Harmony page:
"Project Harmony is a community-centered group focused on contributor agreements for free and open source software (FOSS). As a group, we represent a diverse collection of perspectives, experiences, communities, projects, non-profit and for-profit entities. In that diversity, we share a common belief in the future of FOSS, and a common interest in using our skills (whether they're legal, organizational, editorial, technical, or otherwise) to the benefit of collaborative FOSS communities."
Rabu, 22 Juni 2011
Has Open Source Made Google’s Software Stack Obsolete?
Google has succeeded as much or perhaps more than any other technology company ever. They have accomplished all of this all the while being supporters of and with the support of the open source community. They are known for their corporate drive to have the best of everything as much...
Google has succeeded as much or perhaps more than any other technology company ever. They have accomplished all of this all the while being supporters of and with the support of the open source community. They are known for their corporate drive to have the best of everything as much as their corporate motto of "do no evil". They have the best hardware, the best data centers, they hire the best people....
Senin, 06 Juni 2011
Read-Only Nation: Can Open Source Change the British Way?
We asked if open-source software had a part to play in increasing technological innovation in the UK. It seems that for a nation with such a great engineering heritage, we have too easily passed the tech leadership flag over to the US and to the emerging economies.…
Jumat, 03 Juni 2011
The Future of the OpenStack Open Source Cloud
From the blogs: Jonathan Bryce explains why Ubuntu Linux is used by OpenStack and why OpenStack is a once-in-a-lifetime open source opportunity.
Kamis, 02 Juni 2011
U.S. Gov't Lessons Learned from Open Source
New report provides guidance and best practices on how to leverage open source.
Selasa, 31 Mei 2011
Weekend Project: Pre-Loading Maps for Open Source Navigation Apps
Map-based navigation: it's one of the killer apps for any mobile platform. The only sticking point is getting the maps. Downloading map tiles on the fly is the default solution for most navigation apps, but pre-loading makes more sense when it's possible. Unfortunately, open source navigation apps have earned a reputation for clunky and awkward map-loading interfaces. This weekend, let's look at a simpler method, so you can get on the road quicker.
Sure, whenever you have solid data coverage and a cheap-but-fast mobile plan, you can stream maps on-demand — but even then your download speed can to a crawl at just the wrong moment. Plus, you can forget about streaming maps if you're traveling to the back woods or headed overseas with a pre-paid SIM. Pre-loading map sets bypasses the entire problem, plus for many apps it allows you to calculate routes while offline as well.
The problem is that the open source apps make pre-loading into a colossal pain. Some provide a pre-loading interface that falls flat — such as by requiring you to manually enter unformatted latitude and longitude coordinates for the corner points, by not allowing you to see which maps it already has stored, or by attempting to download every zoom level in the database. Others simply have no pre-loading interface at all, requiring manual configuration file editing to point the app towards the right storage directory.
If you had unlimited disk space, you could always grab the entire OpenStreetMap global data set, but for all practical purposes the way most people will operate is to keep a small set of maps on their device at any one time — home, the destination city for a particular trip, and so forth.
Complicating matters slightly is the fact that different navigation apps utilize different map sources. If you're hiking cross-country, you probably want a topographic map, so OSM's street map source isn't going to be any good, regardless of how easy it is to partition off the relevant boundary lines and download tiles. If you use more than one app then typically you double the amount of work involved, since most navigation apps have their own package format and directory structure — even when dealing with the same map source.
We can simplify the process by using the Java application Mobile Atlas Creator (or MOBAC for short). MOBAC includes a web map renderer on which you can select the region of which you're interested in generating an offline map source, plus controls that let you configure zoom level and other options. Whenever you have your "atlas" (which is MOBAC's term for each individual offline map bundle) configured, you can have MOBAC batch-download the tiles and properly configure them for the navigation device of your choice.
You can download MOBAC from the project's site on SourceForge.net. For most users, all you will need to do is grab the .jar package linked to under "Download" on the home page. It requires Java 1.6 or newer, which is standard fare for Linux. The developer recommends you also download the latest build of Java Advanced Imaging from Sun (or presumably, Oracle), although this is optional. A subset of mapping applications also require the Sqlite database; the Download section links to the appropriate Java library.
The current release of MOBAC is version 1.9 beta 5, which officially supports 28 different navigation and mapping apps. There are others that use a compatible format, but don't make the main list. Most are turn-by-turn mobile navigation aids like AndNav, OsmAnd, and Osmdroid, but off-road utilities like Mobile Trail Exporer, specialty apps like Nokia Sports Tracker, and GPS-logging apps are supported as well — including those for dedicated GPS hardware like Magellan and Garmin units.
After you've downloaded the requisite files, cd into the resulting directory and launch MOBAC with ./start.sh &. The left-hand window pane holds a series of expandable settings docks; click on the arrow in each dock's title bar to see its content. The right-hand pane is for GPX data, which is a different enough use case that we don't have time to discuss it. In the center is the map view widget.
The atlas-building process is a bit quirky, but you will soon get the hang of it. The "Map source" selection dock on the left lets you choose which map is displayed in the map view. "Atlas Content" further down displays the map components you have selected so far. By default, MOBAC starts a new atlas project named "Unnamed atlas" at startup. You can work on more than one at a time — use the "New" button to create one. Just keep an eye on which atlas project is selected as you work: every time you make a selection on the map view, you can click the "Add selection" button to add it to the currently chosen atlas project.
In the map view widget, the right mouse button acts as a "grab" controller, with which you can pan and scroll the map view. The left mouse button allows you to draw a selection rectangle onto the map. The scroll wheel zooms in and out. When you have selected the region you want to save, go to the "Zoom Levels" dock and check which levels you want to download. There is some trial-and-error involved, but if you're new you can learn a lot by visiting OSM's web renderer and watching the zoom level there. You probably don't need more than two or three levels; it simply depends on the detail level you want.
What makes MOBAC exceptionally useful, however, is that you don't have to stop at one selection rectangle or one map source. You can add multiple cities (at a high zoom level) and a large swatch of highway (at a lower zoom level) all to one atlas. You can also grab OSM street data and OSM public transport or hiking maps, and merge them all into a single atlas.
When you have all of your selections made, choose "Convert atlas format" from the "Atlas" menu. This dialog lets you select the output format of your maps. The README file (which is also accessible through the Help menu) describes which format is required for each of the supported apps. For other apps, you need to look online for documentation (Mappero, for example, uses the "OSMTracker tile storage" format, which seems to be popular among the open source apps, although AndNav has its own). If you installed the Java Advanced Imaging package mentioned earlier, you can select some custom tile processing options (such as reducing the color data to save space), but it's not required. When you're ready, click "Create atlas" and MOBAC will download all of the tiles in your atlas selections, convert them, and package them for use on your device.
At this point, all that remains is to copy your freshly-minted atlas to your mobile device. Here the process varies from app to app. Start by clicking the "Open Atlas Folder" button in MOBAC's "success" dialog. Each atlas project you've built will be saved in one location, so you can maintain a local library. Whether you can simply drag-and-drop an atlas folder from your hard disk to a USB-attached device, or whether you need to navigate inside it and drag the sub-folders independently depends on the app. Start by consulting the README file; if you don't find instructions there, go to the MOBAC wiki, which maintains pages on the subject — often linked to real-world how-to guides.
You may have noticed that there is a long list of map sources rambling down the sidebar of the MOBAC homepage, but that I have only discussed using OSM-based data sets. That is because Robert, MOBAC's lead developer, recently made a change to the application that disabled most of the commercial and proprietary map sources. As he explains on the forum, he did not do this because the map data was licensed in a manner incompatible with MOBAC's GPLv2 , but because the terms of use for a handful of the more litigious map providers explicitly forbid so-called "bulk" downloads through their APIs.
Whether your personal usage of MOBAC constitutes a "bulk" request depends on how much you select, but Robert did not feel like working it all out individually. Instead, he disabled the problematic services, and now says he will re-enable any of them for which a clearly-expressed deal can be reached. He is asking MOBAC users to contact map service providers rather than doing the deal-making himself.
I have grave doubts as to whether that third-party negotiation technique will work, but in the meantime I don't mind: OSM works everywhere I have traveled, and it is explicitly free. You can read more about the map source setup process in the same thread, including how to add map sources that are free but don't offer any TOS at all (or simply don't respond to inquiries). It's important to notice, however, that a web map source has to meet some technical requirements in order to function. The MOBAC site has a list of map sources that are incompatible, and a tool to help you determine if a new source meets the requirements.
It only takes a few seconds for MOBAC to download and convert hefty map collections if you have a reasonably fast Internet connection. Doing so once might be a slight convenience when compared to making a single custom map set, but what makes MOBAC worth keeping around is how it simplifies the process on a repeating basis.
As mentioned above, you can save your old atlases for later re-use; MOBAC can also be configured to freshen already-downloaded tiles so that updates to the map are added to your existing atlas. It also allows you to bookmark map views, so that you can quickly re-visit settings; this is especially useful as you are getting used to what your preferred zoom levels are for different types of transport. In addition, MOBAC excels because of its support for multiple map layers. How uninteresting would it be if you had to choose between street maps or public transport, but not both?
Open source navigation apps have come a long way in a short period of time, particularly on Android, but they all still have room to improve in the area of offline map support. It is an understandable afterthought if you are the developer, where offline and online maps are such very different features. Which is why it's such a good thing MOBAC is available to bridge the gap.
Kamis, 26 Mei 2011
Future of Open Source Survey Points to Cloud and Mobile Opportunities
The annual Open Source Business Conference (OSBC), sponsored by Computerworld, is underway in San Francisco this week, and, as usual at the conference, Northbridge Venture Partners has released its Future of Open Source survey results. This year's edition of the survey involved more than 20 industry collaborators and more than 450 participants from all over the open source community. We've covered the results of this survey in the past, where it has typically pointed to important new trends such as the integration of open source with cloud computing strategies, and the rise of open source business intelligence software. This year's survey results show especially bright trends for open source in the mobile and cloud computing arenas.
Selasa, 24 Mei 2011
No Honeycomb Open Source Till After Ice Cream Sandwich
Google will not be making the Honeycomb source code available to the general public until after it has released its replacement, Ice Cream Sandwich
Minggu, 22 Mei 2011
AMD Embedded Commits to Open Source BIOS Coreboot
Monday, 09 May 2011 00:00 The H
AMD's Embedded Solutions has announced a roadmap for its future use of coreboot, the open source BIOS, and is planning coreboot support "for all future products on the roadmap"
Jumat, 20 Mei 2011
Dual-Monitor Setups Are Ideal for Open Source Enthusiasts
If you happen to work each day around other computer users, you've probably noticed that more and more of them have dual-monitor setups on their desktops. A closer analysis of this phenomenon reveals that certain kinds of users benefit most from having two monitors instead of one. Working with that idea, Computeworld has an interesting analysis posted on whether developers benefit disproportionately from dual monitors. In my experience, developers can definitely benefit from this setup, but so can open source enthusiasts who work in more than one desktop environment, and open source users who favor both of the leading open source browsers: Firefox and Google Chrome. Here is why you should investigate a two-monitor lashup if you haven't already.
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