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The kanban approach, between agility and leanness: a systematic review. The interest in lean product development in general and the Kanban approach in particular has increased over the years. However, practitioners, in the software development field, have significant challenges in implementing the Kanban approach as it lacks a clear definition of its principles, practices, techniques and tools. This study aims to provide insight into the Kanban approach and its elements (concepts, principles, practices, techniques, and tools) that have been empirically reported by scholars and practitioners. This insight is produced by using the systematic review method to analyze the available literature. 18 Ways To Lean Software Development Governance Indicators PdfA total of 3. 7 primary studies were selected from more than 3,0. Our findings show that the primary studies have considered and reported 2. Kanban approach based upon considerations of being an agile approach or a lean principle; these elements have realized great benefits and improvements to the software development teams. These benefits along with the challenges have been reported in this study. Due to the variety of organization types, contexts, and project sizes reported in the primary studies, it is expected that the results in this study would help in establishing knowledge on what are the different elements of the Kanban approach as well as offering a first step towards developing guidelines for practitioners to help in introducing the Kanban approach to software development organizations. Keywords. Kanban Lean Agile Software development Software engineering Process improvement Systematic review. Justre_1305E_titlelist isbn authoreditor1_lastname originators title subtitle series_title volume_number edition_number copyright_year number_of_arabic_pages. 18 Ways To Lean Software Development Governance Indicators DatabaseQuality Management for Organizational Excellence:Introduction to Total Quality David L. Goetsch Stanley Davis Seventh Edition Pearson Education Limited. Test-driven development (TDD) is a software development process that relies on the repetition of a very short development cycle: Requirements are turned into very.
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DASH7 - Wikipedia. DASH7. International standard. Based on ISO/IEC 1. Developed by. DASH7 Alliance. Industry. Automation, industrial, military. DASH7 Alliance Protocol (D7. A) is an open source Wireless Sensor and Actuator Network protocol, which operates in the 4. MHz, 8. 68 MHz and 9. MHz unlicensed ISM band/SRD band. DASH7 provides multi- year battery life, range of up to 2 km, low latency for connecting with moving things, a very small open source protocol stack, AES 1. The DASH7 Alliance Protocol is the name of the technology promoted by the non- profit consortium called the DASH7 Alliance. International standard[edit]DASH7 Alliance Protocol originates from the ISO/IEC 1. MHz ISM band air interface for active RFID. This standard was mainly used for military logistics. The DASH7 Alliance re- purposed the original 1. The DASH7 Alliance Protocol covers all Sub- GHz ISM bands making it available globally. The name of the new protocol was derived from the section seven denoted as - 7 (/'dæʃ 'sevən/) of the original standard document. The current version of the DASH7 Alliance protocol is no more compliant with the ISO/IEC 1. History[edit]In January 2. U. S. Department of Defense announced the largest RFID award in history, a $4. DASH7 devices, to four prime contractors: Savi Technology, Northrop Grumman Information Technology, Unisys and Systems & Processes Engineering Corp. SPEC).[1]In March 2. DASH7 Alliance, a non- profit industry consortium to promote interoperability among DASH7- compliant devices, was announced, and as of July 2. Similar to what the Wi. Fi Alliance does for IEEE 8. DASH7 Alliance is doing for the ISO 1. In April 2. 01. 1, the DASH7 Allianceannounced adoption of DASH7 Mode 2, a next- generation version of the ISO 1. In March 2. 01. 2, the DASH7 Alliance announced it was making the DASH7 Mode 2 specification available to non- members on an open source basis. In July 2. 01. 3, the DASH7 Alliance announced the DASH7 Alliance Protocol Draft 0. In May 2. 01. 5, the DASH7 Alliance publicly released the v. DASH7 Alliance Protocol. Fusion 4 Series Controllers are the most powerful relay controllers we currently manufacture. Capable of controlling relays from a computer, sensor readings, or a. Caution. Debug for Grove - NFC v1.0 : There is a bug while using I2C communication, please use jumper wires to follow those connection. · Tane: Contrarywise! In a system using sensors with digital interfaces, you’re absolutely screwed if the company stops making that sensor, or the. In January 2. 01. DASH7 Alliance publicly released the v. DASH7 Alliance Protocol. The version constitutes a major update of v. Technical summary[edit]DASH7 contrasts with existing wireless data technologies, after: [2]Global Standard Used. Frequency bands. Channel width. Range. Frequencies available globally (yes/no)Maximum end node transmit power. Packet size. Data rate (uplink/downlink)Topology. End node roaming allowed. Governing body. DASH7 Alliance Protocol 1. MHz ISM/SRD2. 5 k. Hz or 2. 00 k. Hz. MHz: +1. 0d. Bm. 8. MHz: +2. 7d. Bmmax. Node- to- node, Star. Tree. Yes. DASH7 Alliance. IEEE P8. 02. 1. 1ah (low power Wi- Fi)Unlicensed Sub- 1 GHz bands (excluding TV whitespace)1/2/4/8/1. MHz. Up to 1 km (outdoor)Dependent on Regional. Regulations (from 1 m. W to 1 W)Up to 7,9. Bytes (w/o. Aggregation), up to 6. Bytes (with Aggregation)1. Mbit/s/1. 50kbit/s ~ 3. Mbit/s. Star, Tree. Allowed by other 8. IEEE 8. 02. 1. 1 working group. Ingenu RPMA2. 4 GHz ISM1 MHz (4. Lo. Sto 2. 0 d. Bm. B- 1. 0k. BAP aggregates to 6. Sector (Assumes 8 channel Access Point)/AP aggregates to 1. Sector (Assumes 8 channel Access Point)Typically Star. Tree. supported with an RPMA extender. Yes. Ingenu. LTE- Cat MCellular. MHz. 2. 5– 5 km. 10. W~1. 00 - ~1. 00. Star. Yes. 3GPPLo. Ra. WAN4. 33/8. 68/7. MHz ISMEU: 8x. 12. Hz, US 6. 4x. 12. Hz/8x. 12. 5k. Hz, Modulation: Chirp Spread Spectrum. EU: < +1. 4d. Bm. US: < +2. 7d. Bm. User defined. EU: 3. US: 9. 00bit/s- 1. Star on Star. Yes. Lo. Ra Alliancen. Wave. Sub- 1 GHz ISMUltra narrow band. W1. 2 byte header, 2- . Star. Yes. Weightless SIGSig. Fox. 86. 8/9. 02 MHz ISMUltra narrow band. Lo. S1. 0μW to 1. W1. 2 bytes (payload)1. Star. Yes. Sig. Fox. Weightless- W4. 00- 8. MHz (TV whitespace)5 MHz. Bm. 10 byte min. 1 kbit/s to. Mbit/s/1 kbit/s to 1. Mbit/s. Star. Yes. Weightless SIGWeightless- NSub- 1 GHz ISMUltra narrow band (2. Hz)3 km (urban)1. Bm. Up to 2. 0 bytes. Star. Yes. Weightless SIGWeightless- PSub- 1 GHz ISM1. Hz. 2 km (urban)1. Bm. 10 byte min. 2. Star. Yes. Weightless SIGBLAST networking technology[edit]Networks based on DASH7 differ from typical wire- line and wireless networks utilizing a "session". DASH7 networks serves applications in which low power usage is essential, and data transmission is typically much slower and/or sporadic, like basic telemetry. Thus instead of replicating a wire- line "session", DASH7 was designed with the concept of B. L. A. S. T.: Bursty: Data transfer is abrupt and does not include content such as video, audio, or other isochronous forms of data. Light: For most applications, packet sizes are limited to 2. Transmission of multiple, consecutive packets may occur but is generally avoided if possible. Asynchronous: DASH7's main method of communication is by command- response, which by design requires no periodic network "hand- shaking" or synchronization between devices. Stealth: DASH7 devices does not need periodic beaconing to be able to respond in communication. Transitive: A DASH7 system of devices is inherently mobile or transitional. Unlike other wireless technologies DASH7 is upload- centric, not download- centric, thus devices do not need to be managed extensively by fixed infrastructure (i. Sub 1- Ghz[edit]D7. A utilizes the 4. MHz frequencies[3], which is globally available and license- free. Sub 1- GHz is ideal for wireless sensor networking applications since it penetrates concrete and water, but also has the ability to transmit/receive over very long ranges without requiring a large power draw on a battery. The low input current of typical tag configurations allows for battery powering on coin cell or thin film batteries. Tag- to- tag communications[edit]Unlike most active RFID or LPWAN technologies, DASH7 supports tag- to- tag communications. Localization[edit]Localization techniques can be applied to DASH7 endpoints. An accuracy of 1m using DASH7 beacons at 4. MHz has been achieved in a lab experiment.[4]Integrated query protocol[edit]DASH7 supports a built- in query protocol that minimizes "round trips" for most messaging applications that results in lower latency and higher network throughput. DASH7 provides a link budget of up to 1. B with 2. 7 d. Bm transmission power, which positions the technology as Medium Range, compared to Short Range (Bluetooth, Wi. Fi, ..) and Long Range (Lo. Ra. WAN, Sig. Fox). Note that higher ranges are always obtained at the expense of per- bit power consumption and transmission duration. Low power long range technologies are generally not truly bi- directional as the regular scanning duty is pretty high. In this context, DASH7 is a very good compromise between range, power consumption, and bi- directionality and is very suitable for industrial applications with effective range of 1. In line- of- site situations, DASH7 devices today advertise read ranges of 1 kilometer or more, however ranges of up to 1. Savi Technology and are easily achievable in the European Union where governmental regulations are less constrained than in the USA. Interoperability[edit]The DASH7 Alliance is currently working on a Certification program that tests functionally the DASH7 devices. The certification is composed of a set of test scenarios covering transactions in different stack configurations (channel, Qo. S, security). The physical wireless interface is not covered by the certification, and will have to comply to local radio regulations. Alternative Modulations[edit]The DASH7 Alliance policy does not allow to add proprietary or licensable modulation techniques in the official DASH7 Alliance Protocol. However, the layered structure of the protocol allows to easily integrate alternative modulations, such as Lo. Ra, under the Network Layer (D7. ANL). Applications[edit]Commercial applications[edit]Similar to other networking technologies that began with defense sector (e. DARPA funding the Internet), DASH7 is similarly suited to a wide range of applications in development or being deployed including: Building Automation, Access Control, Smart Energy . DASH7's signal propagation characteristics allow it to penetrate walls, windows, doors, and other substances that serve as impediments to other technologies operating at 2. GHz, for example. 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Microsoft beating Citrix? Looking back at 1. Microsoft is going to kill Citrix" stories.)If you've been around the server- based computing industry for any length of time you're no stranger to the Citrix rumor mill. At one time there were stories about Citrix being doomed as a company, acquired by Microsoft, acquired by Oracle and even IBM or Cisco acquiring them. Of course none of these rumors came true, however the Microsoft killing Citrix rumor continues to have the most weight because they are the most likely company that actually could replace the functionality in Xen. App into the native RDS functionality. CTX115637 Citrix Session Graphics Memory Reference describes how multi-monitor resolution is determined. Open the registry (regedit) and navigate to: HKEY_LOCAL. Become a Partner Increase your profitability and success with Citrix. Citrix Partner Central Market, sell and manage your Citrix business.By submitting your personal information, you agree that Tech. Target and its partners may contact you regarding relevant content, products and special offers. You also agree that your personal information may be transferred and processed in the United States, and that you have read and agree to the Terms of Use and the Privacy Policy. Citrix's Demise in 1. One very interesting rumor (almost a fact) was that of Citrix's demise in 1. That year was when Citrix's license to the NT 3. Citrix needed to obtain a license of the NT 4. Microsoft was noticing Citrix's rise in profitability and began to wonder if they should take a bigger piece of the pie and not let this company keep reselling a modified Windows product quite successfully. Citrix stock tanked and it certainly looked like they might be doomed. After much negotiations, Microsoft later decided to strike a deal with Citrix. They would pay Citrix $1. Citrix's Multi. Win technology into a Microsoft Windows Terminal Server product. Microsoft would supply it's own protocol RDP and Citrix would retain rights to ICA. This was a defining moment in Citrix's future. Had that deal not come along, Citrix would quite possibly not exist today. An interesting bit of trivia on this topic is that there was a person who was critical in the negotiations of this deal at Microsoft. That man, Paul Maritz is now public enemy No. VMware. However, if it weren't for him there might not be a Citrix to compete with today. Interesting trivia, but getting off topic. Microsoft to release "Citrix- killer" in 2. R2. If you look at the history of RDS and Citrix products, there have been various "Citrix- killer" rumors over the years. None of the rumors were more crushing and realistic than the Project Bear Paw announcements in 2. Microsoft had already successfully launched Server 2. R2 and they made it known that they were planning on making some substantial improvements in Terminal Services. Back in the Server 2. Terminal Services as it lacked application publishing, seamless windows, good web interface, load balancing, enterprise management, etc. In June of 2. Program Manager for Terminal Services named Adam Henderson presented a deck at Tech. Ed called "Terminal Services in Windows Server 2. Technical Overview". The presentation was largely a rehash of existing known info, but it did contain a roadmap slide indicating what Microsoft was planning to do with Terminal Services. The short list of items includes: Application Publishing. Remote Apps Integrated Locally (RAIL) - Basically start menu integration. Collaboration. Single sign- on. Multimedia redirectionetc. Brian has blogged about the announcements related to Bear Paw and further analysis of what it means to Citrix. There is also a document containing info from a Citrix FAQ regarding their responses to the Bear Paw announcement. Bear Paw never happened. So what's your point? Bear Paw never was released, though Microsoft did incrementally improve TS/RDS over the years. Let's look at Server OS releases since then and talk through their major enhancements: Server 2. R2. This server OS release focused on core infrastructure improvements to AD, branch office server deployment, etc. Unfortunately, nothing really improved in 2. R2 related to Terminal Services which is why I advised many customers to just keep deploying Server 2. R2 Server images. Pure RDS/TS folks were just able to skip this release. Server 2. 00. 8This was a big release for Microsoft. There were lots of core OS changes that ultimately improved the situation for RDS like: Hard resource quotas for shared critical resources - To protect things like paged pool memory allocations. Page file optimizations - Reading and writing the page file in larger blocks of memory. Low priority I/O - Allows for things like disk defragmentation and anti- virus scans to run only when low disk I/Os are occuring. SMB 2. 0 - Can improve read/write speeds to file servers where user documents and profile data are stored. Kernel Transaction Manager - Provides better reliability of application of server hot fixes, etc. Windows System Resource Manager - Provides mechanism to control resource consumption of user processes (works with RDS sessions)Group Policy Preferences - Removes the need for most logon scripts. Specifically for Terminal Server functionality, the following features were added: TS Remote App - Seamless windows and locally integrated apps in the start menu. TS Web Access - Web user interface to TS Remote App Published applications. TS Session Broker - Limited, but functional brokering of user sessions. TS Gateway - RDP over SSL tunneling/proxying of RDP sessions. Single point of access through public firewall. TS Easy Print - A least common denominator fall back software printer similar to Citrix's Universal Print Driver v. Higher screen resolution - Up to 4. Parallel session creation - Prior to Server 2. TS session could be logged on simultaneously. Session Manager improvements now brings a minimum of 4 simultaneous sessions. Dynamic System Address Space - Dynamic balancing between Paged Pool, Nonpaged Pool and System PTEs. In 2. Built- in User Profile Hive Cleanup Services - No more need for UPHClean (at least for stuck registry handles)While these are some great features for Server 2. Terminal Services, the reality is that they were quite limited. Limited enough to prevent most people from deploying this without Citrix as some add- on middleware. Brian blogged about this release and his assessment was "Citrix has nothing to worry about" and it was largely true. However, this release pretty much adds the rumored features of Bear Paw. There were plenty of companies wondering if this release had just enough that would allow them to shake the extra Citrix licensing. In most cases, it didn't deliver enough. Server 2. 00. 8 R2. Yet another huge release for Microsoft and lots of changes for TS (now called Remote Desktop Services). Let's look at some core additions: Hyper- V 2. R2 baked in - Hyper- V 1. Hyper- V R2 is right up there with v. Sphere and Xen. Server. Direct Access / Branch Cache - Great new technologies for enabling branch office users and mobile laptop users to provide access to files, etc in an WAN friendly way. IIS 7. 0 - Yet a more secure IIS web server version. Specifically for TS/RDS, the following features were added: Broker now integrates VDI (RDVH - Remote Desktop Virtualization Host) and TS (RDSH - Remote Desktop Services Session Host)Improvements to RDS Web Access and RD Gateway. True Multi- monitor support (prior to this Microsoft only supported spanning - now you can have up to 1. Improved multimedia support and bidirectional audio support (for Vo. IP applications)Aero Glass supported over RDSWindows Installer Engine properly supports multiple simultaneous logons and processing of self healing by queuing actions (this use to fail completely)RDS Powershell Provider - For automating RDS via Power. Shell. Server 2. 00. R2 with SP1. Server 2. R2 Service Pack 1 added two primary features: Dynamic Memory - A method of dynamically allocating memory to VMs to provide higher density while allowing good performance. Remote. FX - New method of providing virtual GPU access to VMs on Hyper- V. Provides a content agnostic host- side rendered RDS model. Remote. FX is the future direction for RDS, however it's currently a LAN- only technology. In looking at all of these incremental improvements to RDS, it's clear that Microsoft continues to improve the platform. So what is it about Citrix Xen. App that continues to lead the pack against Microsoft and RDS? Star Wars aka "Where Microsoft Loses"Brian blogged back in 2. 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