hey!!!!! everybody dats was simple ppt on mobile computing as u all aware dat d world is not stationary things are getting change technology is rocking all over so lets get into in it
and plz. dont forget to comment on my work weather u lik or not
IT6601 MOBILE COMPUTING UNITI
INTRODUCTION
Mobile Computing – Mobile Computing Vs wireless Networking – Mobile Computing Applications – Characteristics of Mobile computing – Structure of Mobile Computing Application. MAC Protocols – Wireless MAC Issues – Fixed Assignment Schemes – Random Assignment Schemes – Reservation Based Schemes.
hey!!!!! everybody dats was simple ppt on mobile computing as u all aware dat d world is not stationary things are getting change technology is rocking all over so lets get into in it
and plz. dont forget to comment on my work weather u lik or not
IT6601 MOBILE COMPUTING UNITI
INTRODUCTION
Mobile Computing – Mobile Computing Vs wireless Networking – Mobile Computing Applications – Characteristics of Mobile computing – Structure of Mobile Computing Application. MAC Protocols – Wireless MAC Issues – Fixed Assignment Schemes – Random Assignment Schemes – Reservation Based Schemes.
This ppt define the basic concepts of mobile computing. It is the first part of mobile computing.
It defines the following terms
Introduction to mobile computing
Generations of mobile computing
Cellular concepts
Signalling, modulation and Demodulation
Spread Spectrum
Frequency Reuse
Multiple access schemes
GSM
GPRS
CDMA
Mobile Ad hoc Networks (MANET) has become an exciting and important technology in recent years because of the rapid proliferation of wireless devices. A mobile adhoc network consists of mobile nodes that can move freely in an open environment. Communicating nodes in a Mobile Adhoc Network usually seek the help of other intermediate nodes to establish communication channels. In such an environment, malicious intermediate nodes can be a threat to the security of conversation between mobile nodes. The security experience from the Wired Network world is of little use in Wireless Mobile Ad hoc networks, due to some basic di_erences between the two Networks. Therefore, some novel solutions are required to make Mobile Adhoc Network secure.
Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor.
The most common wireless technologies use radio
Unit - I
Mobile Computing – Mobile Computing Vs wireless Networking – Mobile Computing Applications – Characteristics of Mobile computing – Structure of Mobile Computing Application. MAC Protocols – Wireless MAC Issues – Fixed Assignment Schemes – Random Assignment Schemes – Reservation Based Schemes.
This ppt define the basic concepts of mobile computing. It is the first part of mobile computing.
It defines the following terms
Introduction to mobile computing
Generations of mobile computing
Cellular concepts
Signalling, modulation and Demodulation
Spread Spectrum
Frequency Reuse
Multiple access schemes
GSM
GPRS
CDMA
Mobile Ad hoc Networks (MANET) has become an exciting and important technology in recent years because of the rapid proliferation of wireless devices. A mobile adhoc network consists of mobile nodes that can move freely in an open environment. Communicating nodes in a Mobile Adhoc Network usually seek the help of other intermediate nodes to establish communication channels. In such an environment, malicious intermediate nodes can be a threat to the security of conversation between mobile nodes. The security experience from the Wired Network world is of little use in Wireless Mobile Ad hoc networks, due to some basic di_erences between the two Networks. Therefore, some novel solutions are required to make Mobile Adhoc Network secure.
Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor.
The most common wireless technologies use radio
Unit - I
Mobile Computing – Mobile Computing Vs wireless Networking – Mobile Computing Applications – Characteristics of Mobile computing – Structure of Mobile Computing Application. MAC Protocols – Wireless MAC Issues – Fixed Assignment Schemes – Random Assignment Schemes – Reservation Based Schemes.
Part of the Mobile Communications Resource Center, this is one of several presentations created by Michael Hanley for Ball State University's College of Communication, Information and Media. All rights are reserved.
Self Prepared material when i didn't find one. It covers basics of communication network evolution and also covers the Key factors in communication network evolution.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
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Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
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Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
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GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
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https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...
Introduction & history of mobile computing
1. Introduction & History of Mobile
Computing
by David J Livingston
(davidjlivingston@gmail.com)
2. What is Mobile Computing?
Mobile Computing is a technology that allows
transmission of data, voice and video via a
computer or any other wireless enabled device
without having to be connected to a fixed
physical link.
Mobile Computing is an umbrella term used to
describe technologies that enable people to
access network services anyplace, anytime, and
anywhere.
3. Define Mobility
Mobile simply describes a computing device that
is not restricted to a desktop. A mobile device
may be a PDA, a “smart” cell phone or Web
phone, a laptop computer, a tablet PC or any
one of numerous other devices that allow the
user to complete computing tasks without being
physically connected to a network.
Mobile computing does not necessarily require
wireless communication. In fact, it may not
require communication between devices at all.
4. Mobility of Bits and Bytes
In the last two centuries, mobility has been
redefined.
Both physical and virtual objects are now mobile.
- Mobility of physical objects relate to movement
of matters,
- whereas movements of virtual objects relate to
movements of bits and bytes.
5. More Definition on Mobile
Computing!
A simple definition could be:
Mobile Computing is using a computer (of one kind or another)
while on the move
Another definition could be:
Mobile Computing is when a (work) process is moved from a
normal fixed position to a more dynamic position.
A third definition could be:
Mobile Computing is when a work process is carried out
somewhere where it was not previously possible.
6. Wireless Communication
Wireless refers to the method of transferring
information between a computing device, such
as a personal data assistant (PDA), and a data
source, such as an agency database server,
without a physical connection. Not all wireless
communications technologies are mobile.
For example, lasers are used in wireless data
transfer between buildings, but cannot be used
in mobile communications at this time.
7. Wired Vs. Wireless Networks
Wired Networks
Mobile Networks
- high bandwidth
- low bandwidth
- low bandwidth variability
- high bandwidth variability
- can listen on wire
- hidden terminal problem
- high power machines
- low power machines
- high resource machines
- low resource machines
- need physical access(security)
- need proximity
- low delay
- higher delay
8. Why Mobile Computing?
Enable anywhere/anytime connectivity
Bring computer communications to areas without pre
existing infrastructure
Enable mobility
Enable new applications
An exciting new research area
10. Computer Network
A computer network is collection of several
homogeneous/heterogeneous system, commonly used for
resource sharing.
Computer networks can be classified in many ways:
Area wise:
-
LAN , MAN & WAN
As per medium used:
-
Wired Computer Network & Wireless Computer Network
11. Advantage of Wireless Networks
Flexible: Radio waves can penetrate the obstacles. Sender and
receiver can be placed any where.
Mobility: Data can be access from any location.
Robustness : Can survive in disaster (Earthquake, military
operations)
Scalable: Can be configured in variety of topologies.
Easy Installation
Less Cost
Usage of ISM band: ISM (Industrial, Scientific and Medical) band
(2.40GHz to 2.484 GHz, 5.725 GHz to 5.850 GHz) is available for
use by anyone.
No Planning: Only Wireless Ad hoc not required any planning
.
12. Disadvantage of Wireless
Networks
Quality of Service:
Lower Bandwidth
Lower Data Transmission Rate
High Error Rates
Interference
Higher Delay
Restrictions: License-free frequency bands are not same worldwide.
Safety and Security: Interference from other devices (e.g. Hospital.
Eavesdropping is possible).
13. The Beginning
Most credit Guglielmo Marconi, “the father of radio”, with the
initiation of wireless technology
1894 Marconi experimented with Hertzian Waves (radio waves) to
produce and detect waves over long distances
1896 Marconi established the Wireless Telegraph & Signal
Company, the first radio factory
1901 St John’s, New Foundland, Marconi received the first transAtlantic wireless signal from Poldhu, England
14. Evolution of Wireless Technology
1905 the first distress signal sent using Morse Code
1919 Radio Corporation of America (RCA) was incorporated, and
consumer radio broadcasts for news and entertainment soon
became popular
During World War II the US Military used wireless signals with
encryption to send battle plans and instructions
US Military started the shift to radio data transmission technology
15. The Beginning of Wireless
Technology
In 1947 researchers in AT&T Bell Labs conceived the idea of
cellular phones.
They realized that by using small service areas or cells they
can reuse the frequency.
This in turn can enhance the traffic capacity of mobile
phones.
AT&T requested the Federal Communication Commission
(FCC) to allocate a large number of radio-spectrum
frequencies so that widespread mobile telephone service
would become feasible.
16. Evolution in 20 Century
th
On October 4, 1957 the USSR (Union of Soviet Socialist Republic
now mainly Russia) launched the Sputnik. It was the first
artificial earth satellite launched from Baikonur cosmodrome in
Kazakhstan.
In response to this, the US formed the Advanced Research
Projects Agency (ARPA) within the Department of Defense
(DoD).
This laid the foundation of packet switched data networks. The
important ones are TCP /IP and X.25.
17. Evolution of Wireless Network
The first wireless network was commissioned in
Germany in 1958. It was called A-Netz and used
analog technology at 160 MHz.
Only outgoing calls were possible in this
network.That is to say that connection set-up
was possible from the mobile station only.
This system evolved into B-Netz operating at the
same 160 MHz. It was possible to receive an
incoming call from a fixed telephone network,
provided that location of the mobile station was
known.
18. Evolution of Wireless (Cont.)
A-Netz was wireless but not a cellular network.
Therefore, these systems (A-Netz and B-Netz)
did not have any function, which permitted
handover or change of base station.
In 1968, in USA, the FCC reconsidered its
position on Cellular network concept.
FCC agreed to allocate a larger frequency band
for more number of mobile phones provided the
technology to build a better mobile service be
demonstrated.
19. Cellular Technology
AT&T and Bell Labs proposed a cellular system to
the FCC with many small, low-powered,
broadcast towers, each covering a hexagonal
'cell' of a few kilometers in radius.
Collectively these cells could cover a very large
area.
Each tower would use only a few of the total
frequencies allocated to the system.
As the phones traveled across the area, calls
would be passed from tower to tower.
20. Some Inventions in Wireless
Technology
In April 1973, Martin Cooper of Motorola invented
the first mobile phone handset and made the
first call from a portable phone to Joel Engel.
By 1977, AT&T and Bell Labs constructed a
prototype of a public cellular network.
In 1978, public trials of the cellular telephony
system started in Chicago with over 2000 trial
customers.
21. First Cellular Mobile Network
In 1982, FCC finally authorized commercial
cellular service for the USA.
A year later in 1983, the first American
commercial analog cellular service AMPS
(Advanced Mobile Phone Service) was made
commercially available in Chicago.
This was the first cellular mobile network in the
world
22. Milestones in Wireless Network
TCP/IP was driven by education and defense in the USA whereas
X.25 was driven by European telecommunication industry and
Governments.
1971 network technologies met radio technologies when the first
wireless Local Area Network (LAN) was established at the
University of Hawaii during the experiment, ‘ALOHANET’
ALOHANET used a bidirectional star topology consisting of (7)
computers over (4) islands
23. Milestones (Cont.)
1973 Dr Martin Cooper, Motorola Labs, invented the first personal
mobile cellular telephone (weighed 2.5 lbs, 30 individual circuit
boards, no display screen, 9”x5”x1.75”, 10 hours to charge for
35 minutes of use)
1983 marked American entry into the commercial cellular service
market
1987 FCC allows and encourages cellular service providers to use
alternate technologies in the 800Mhz radio spectrum to prompt
use of digital transmission
24. IEEE Standard for Wirless
Networking
1990 IEEE 802 Executive Committee established the 802.11
Working Group to create a wireless LAN standard.
1997 working group approved IEEE 802.11 as the world’s first
wireless LAN standard
New standards are continuously being developed by the Institute of
Electrical and Electronical Engineers