Category: Computing

By Anders Goransson

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Multithreading is key so as to create an Android app with an outstanding person event, yet how have you learnt which options can assist resolve your challenge? This sensible e-book describes many asynchronous mechanisms on hand within the Android SDK, and offers instructions for choosing those the best option for the app you’re building.

Author Anders Goransson demonstrates the benefits and downsides of every approach, with pattern code and specific causes for utilizing it successfully. the 1st a part of the booklet describes the construction blocks of asynchronous processing, and the second one half covers Android libraries and constructs for constructing quick, responsive, and well-structured apps.

comprehend multithreading fundamentals in Java and at the Android platform
learn the way threads converse inside and among processes
Use options to minimize the danger of reminiscence leaks
deal with the lifecycle of a uncomplicated thread
Run initiatives sequentially within the history with HandlerThread
Use Java’s Executor Framework to manage or cancel threads
deal with history job execution with AsyncTask and IntentService
entry content material companies with AsyncQueryHandler
Use loaders to replace the UI with new data

By Khaled Tannir

Configure your Hadoop cluster to run optimal
MapReduce jobs

Overview
* Optimize your MapReduce activity functionality * determine your
Hadoop cluster's weaknesses * song your MapReduce configuration

In Detail

MapReduce is the distribution procedure that the Hadoop MapReduce
engine makes use of to distribute paintings round a cluster by means of working
parallel on smaller facts units. it's precious in a variety of
applications, together with dispensed pattern-based searching
distributed sorting, net link-graph reversal, term-vector per
host, net entry log stats, inverted index development, document
clustering, computing device studying, and statistical machine
translation

This booklet introduces you to complex MapReduce options and
teaches you every thing from deciding on the criteria that affect
MapReduce task functionality to tuning the MapReduce configuration
Based on real-world adventure, this e-book can assist you to fully
utilize your cluster's node assets to run MapReduce jobs
optimally

This ebook info the Hadoop MapReduce activity performance
optimization technique. via a couple of transparent and practical
steps, it's going to assist you to completely make the most of your cluster's node
resources

Starting with how MapReduce works and the criteria that affect
MapReduce functionality, you may be given an summary of Hadoop
metrics and a number of other functionality tracking instruments. additional on, you
will discover functionality counters that assist you establish resource
bottlenecks, money cluster wellbeing and fitness, and measurement your Hadoop cluster
You also will find out about optimizing map and decrease initiatives by
using Combiners and compression

The e-book ends with top practices and proposals on how to
use your Hadoop cluster optimally

What you'll examine from this book
* find out about the standards that have an effect on MapReduce functionality *
Utilize the Hadoop MapReduce functionality counters to identify
resource bottlenecks * dimension your Hadoop cluster's nodes * Set the
number of mappers and reducers adequately * Optimize mapper and
reducer job throughput and code dimension utilizing compression and
Combiners * comprehend a number of the tuning houses and best
practices to optimize clusters
Approach

This e-book is an example-based educational that offers with optimizing
MapReduce activity performance

Who this publication is written for

If you're a Hadoop administrator, developer, MapReduce consumer, or
beginner, this ebook is the most suitable choice to be had if you want to
optimize your clusters and functions. Having earlier knowledge
of growing MapReduce purposes isn't valuable, yet will
help you greater comprehend the suggestions and snippets of MapReduce
class template code

By Andreas Luszczak

Dynamics AX wird von Microsoft als Premium-Produkt für den Mittelstand im ERP-Markt positioniert und bei der Auswahl eines kaufmännischen structures von zahlreichen Unt- nehmen als substitute geprüft oder als Lösung implementiert. Gleichzeitig eignet es sich im universitären Bereich aufgrund seines hohen Integrationsgrades sehr intestine zum Studium der Möglichkeiten eines ERP-Systems. Dennoch gibt es bisher noch kaum praxistaugliche Literatur zur Abwicklung von Geschäftsprozessen mit Dynamics AX. Nachdem ich nicht nur als Projektleiter in zahlreichen Implementierungsprojekten tätig struggle, sondern auch Lehrveranstaltungen zu Dynamics AX an der FH Joanneum abhalten und an der Universität Linz vortragen durfte, entstand die Idee zu vorliegendem Buch. Mein Ziel ist es, damit einen kompakten Einstieg in Anwendung und Prozessabwicklung mit Dynamics AX zu bieten. Daneben soll über eine durchgehende Betrachtung der Ke- prozesse aber auch erfahrenen Benutzern die Möglichkeit gegeben werden, zentrale T- males rasch nachschlagen zu können. Der Aufbau wurde daher so gewählt, dass die durchgängige Darstellung von Geschäf- prozessen der Kernbereiche Vorrang vor der Behandlung von Teilaspekten hat. Eine e- heitliche Struktur der Kapitel soll nicht nur den Integrationsaspekt unterstreichen, sondern auch die Einarbeitung in Dynamics AX erleichtern. Am Beginn jedes Kapitels ist auch ein Abschnitt „Auf einen Blick“ enthalten, der eine Kurzdarstellung des jeweiligen Kernp- zesses enthält. Konsequent aufeinander aufbauende Übungsaufgaben unterstützen das Verständnis der Zusammenhänge.

By Tom Fifield, Diane Fleming, Anne Gentle, Lorin Hochstein, Jonathan Proulx, Everett Toews, Joe Topjian

Design, set up, and continue your personal inner most or public Infrastructure as a provider (IaaS), utilizing the open resource OpenStack platform. during this functional consultant, skilled builders and OpenStack individuals enable you construct clouds according to reference architectures, in addition to tips to practice day-by-day management tasks.

Designed for horizontal scalability, OpenStack permits you to construct a cloud via integrating a number of applied sciences. This strategy presents flexibility, yet understanding which strategies to exploit might be bewildering. when you entire this booklet, you’ll comprehend the best inquiries to ask once you arrange compute, garage, and networking assets. in the event you already understand how to control a number of Ubuntu machines and hold MySQL, you’re prepared to:

arrange computerized deployment and configuration
layout a single-node cloud controller
Use metrics to enhance scalability
discover compute nodes, community layout, and storage
set up OpenStack packages
Use an instance structure to aid simplify decision-making
construct a operating surroundings to discover an IaaS cloud
deal with clients, initiatives, and quotas
take on upkeep, debugging, and community troubleshooting
display screen, log, backup, and restore

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By Al Anderson, Ryan Benedetti

Annoyed with networking books so chock-full of acronyms that your mind is going into sleep mode? Head First Networking's exact, visually wealthy structure offers a task-based method of desktop networking that makes it effortless to get your mind engaged. You'll research the innovations through tying them to on-the-job projects, mixing perform and thought in a manner that merely Head First can.

With this ebook, you'll study abilities via various actual eventualities, from solving a malfunctioning workplace community to making plans a community for a high-technology haunted residence. You'll study precisely what you want to comprehend, instead of a laundry record of acronyms and diagrams. This ebook may help you:

* grasp the performance, protocols, and packets that make up real-world networking
* examine networking thoughts via examples within the field
* take on initiatives equivalent to making plans and diagramming networks, operating cables, and configuring community units akin to routers and switches
* computer screen networks for functionality and difficulties, and examine troubleshooting techniques
* perform what you've realized with approximately 100 workouts, questions, pattern difficulties, and projects

Head First's renowned structure is confirmed to stimulate studying and retention through enticing you with photos, puzzles, tales, and extra. even if you're a community expert with a CCNA/CCNP or a scholar taking your first collage networking path, Head First Networking can help you develop into a community guru.

By Carola Frediani

"DEEP internet - los angeles rete oltre Google" scatta quattro fotografie di quello che è su web, ma vive al di sotto della superficie in cui los angeles maggior parte delle persone naviga. È un percorso emozionante e contraddittorio che ci mette di fronte a quello che viene normalmente rimosso nella rete controllata ed edulcorata dei social community, dei web publication, dei siti net commerciali. Droga e furti telematici convivono assieme a libertà di pensiero, attivismo informatico, idee.
Carola Frediani ci connette con questo mondo nascosto, parlandoci dei suoi personaggi e delle sue storie. Ci racconta di Silk street, una mecca della droga online, del suo smantellamento da parte dell'Fbi e delle verità grigie che si nascondono dietro alla cattura dei suoi gestori, tra omicidi e foto di ragazzi according to bene. Ci parla di nameless, delle manifestazioni e delle azioni di attivismo politico function solo nel mondo della rete, ma non according to questo virtuali, anzi. E ancora di cybercriminalità, di clonazione di carte di credito, di accesso alle webcam dei pc di chi viaggia su net senza conoscere i meccanismi che stanno dietro a questo mondo che identifica ormai l. a. nostra contemporaneità. È il mondo di Tor, di Cipolla, del Datagate, dei Bitcoin. In una parola: è un mondo in cui riversiamo quotidianamente i nostri dati e da cui li scarichiamo. Questo booklet parla della libertà che ci è concessa, della sicurezza che questi dati hanno e di altri modi possibili di vivere una rete diversa, non omologata, pericolosa e alternativa.

By Ricardo Buettner (auth.), Eitan Altman, Iacopo Carrera, Rachid El-Azouzi, Emma Hart, Yezekael Hayel (eds.)

This quantity of LNICST is a set of the papers of the 4th foreign convention on Bio-Inspired types of community, info, and Computing structures (Bionetics). the development happened within the medieval urban of Avignon, recognized additionally because the urban of the Popes, in the course of December nine to eleven, 2009. Bionetics major goal is to convey b- encouraged paradigms into machine engineereing and networking, and to reinforce the fruitful interactions among those fields and biology. this system of the convention certainly comprises purposes of assorted paradigms that experience their foundation in biology: inhabitants dynamics, branching tactics, ant c- ony optimization. The lawsuits comprise 19 papers protecting a wide diversity of - portant concerns in parts with regards to bio-inspired applied sciences. They correspond to pr- entations at 6 technical classes. 4 papers correspond to an invited consultation at the Epidemic-type forwarding in DTNs (sparse cellular ad-hoc instant networks) org- ized via Dr Francesco De Pellegrini, (Italy, CREATE-NET). the next nine papers (selected out of 15 submissions) correspond to contributions to average periods on Bio-inspired protection, Bio-Inspired Networking, Bioinspired algorithms and software program structures. the remainder 6 papers (selected out of a complete of nine submissions) are de- cated to paintings in growth. for every paper, now we have supplied no less than self reliant reports, such a lot of which have been provided through individuals of the TPC.

By Andrzej Bielecki, Marzena Bielecka, Anna Chmielowiec (auth.), Leszek Rutkowski, Ryszard Tadeusiewicz, Lotfi A. Zadeh, Jacek M. Zurada (eds.)

This booklet constitutes the refereed court cases of the ninth overseas convention on man made Intelligence and smooth Computing, ICAISC 2008, held in Zakopane, Poland, in June 2008.

The 116 revised contributed papers awarded have been conscientiously reviewed and chosen from 320 submissions. The papers are prepared in topical sections on neural networks and their functions, fuzzy structures and their functions, evolutionary algorithms and their purposes, category, rule discovery and clustering, picture research, speech and robotics, bioinformatics and clinical purposes, a variety of difficulties of synthetic intelligence, and agent systems.

By Rob Flickenger

Publish yr note: First released in 2003
------------------------

A efficient procedure administrator understands Linux server is a excessive functionality approach for routing quite a lot of info via a community connection. establishing and preserving a Linux server calls for realizing not just the undefined, however the bits and bobs of the Linux working method in addition to its assisting forged of utilities in addition to layers of functions software program. There's uncomplicated documentation on-line yet there's much past the fundamentals you want to understand, and this merely comes from individuals with hands-on, real-world event. this sort of "know how" is what we sought to seize in Linux Server Hacks .

Linux Server Hacks is a suite of a hundred industrial-strength hacks, delivering suggestions and instruments that resolve sensible difficulties for Linux procedure directors. each hack could be learn in exactly a couple of minutes yet will keep hours of looking for definitely the right resolution. many of the hacks are refined, a lot of them are non-obvious, and them all exhibit the facility and suppleness of a Linux process. You'll locate hacks dedicated to tuning the Linux kernel to make your approach run extra successfully, in addition to utilizing CVS or RCS to trace the revision to procedure documents. You'll study other ways to do backups, the best way to use approach tracking instruments to trace procedure functionality and numerous safe networking recommendations. Linux Server Hacks additionally is helping you deal with large-scale net installations operating Apache, MySQL, and different open resource instruments which are in most cases a part of a Linux system.

O'Reilly's new Hacks sequence proudly reclaims the time period "hacking" for the nice men. Hackers use their ingenuity to unravel attention-grabbing difficulties. Rob Flickenger is an skilled method administrator, having controlled the platforms for O'Reilly community for numerous years. (He's additionally into group instant networking and he's written a publication on that topic for O'Reilly.) Rob has additionally accumulated the easiest principles and instruments from a couple of different hugely expert contributors.

Written for clients who already comprehend the fundamentals, Linux Server Hacks is equipped upon the services of people that quite understand what they're doing.

By Yang Bo, Li Yingfang, Li Junsheng, Sun Jianhong (auth.), Yanwen Wu (eds.)

This six-volume-set (CCIS 231, 232, 233, 234, 235, 236) constitutes the refereed court cases of the foreign convention on Computing, info and keep watch over, ICCIC 2011, held in Wuhan, China, in September 2011. The papers are equipped in volumes on leading edge Computing and data (CCIS 231 and 232), volumes on Computing and clever structures (CCIS 233 and 234), and in volumes on details and administration Engineering (CCIS 235 and 236).