adamcox9

Lately, I have been thinking about working solely. It seems as though working for other companies has a lot of cons. Do not get me wrong. There are also a lot of pros for working for another company. I would get full insurance, 401K, stock options, and more from working for other companies, but working on my own feels so much more rewarding. One of the cons is that sometimes you are pulling all the weight for a company, yet multiple people are reaping from your labor. I work for 3 years building a huge software system that makes millions of dollars, yet, I will only make $70,000 a year. Then again, working for myself, I could spend 3 years building a huge software system that makes nearly nothing. It is such a gamble doing it on your own. I have compiled a list of my websites that I have built to help start-up my own company. Here are some links to them:

Binding Designs, LLC - a software company founded by Adam Cox.

EZ App Builder - an application to create Facebook Applications.

Chat Room For My Website - a chat room to add to your website or web application.

Chizat.com - a chat room to add to your website or web application.

Get a Joomla Website - get a Joomla website set up at the domain of your choice.

deve.lopment.com - a list of some of my pieces of work.

Moriah - a website for my girlfriend Moriah.

MySQL Developer - Boston, MA - contact for MySQL consultant work.

PHP Developer - Boston, MA contact with your PHP Development project.

Pocket Social (com |
mobi |
net) - a social network for your pocket.

Random Thoughts - random thoughts from around the world.

Software Engineer - Boston, MA - get a Software Engineer in Boston, MA.

Web Designer - Boston, MA - get a Web Designer in Boston, MA.

Web Developer - Boston, MA - get a Web Developer in Boston, MA.

Thank you for visiting deve.lopment.com .

Tags: boston, company, developer, software

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24 April 2008 @ 04:10 am

Random Thoughts

I have created this great little application that works across platforms. It is very psychological and philosophical. The application is called Random Thoughts It allows users to enter, anonymously, their thoughts. Then anyone else can view them. Users are allowed to comment on other people's thoughts. It is like a mini blog based on random thoughts. I thought that it was an interesting concept. People are using it a lot and I am getting positive feedback. You can view the website at http://randomthoughts.ws/

my bestfriend is my husba...
black people suck
Life is just one day at a...
my name's levi
Never piss on an electric...
i waited too long
Life is so short and yet ...
if i had a heart maybe i ...
I'm wearing tye die
i want to move to norway ...
if your down... i love yo...
why live to cater to anyo...
is it terrible that i thi...
I realize that I'm not a ...
This isn't what I thought...
I'm a Crazy biatch!!!
you are loved by she phoe...
get your own layout here!...
i do miss you.
pleasure turns to the pai...
the moon concists of pure...
i dreamed i was missing a...
playboy bunnies r everywe...
If living can kill you, t...
why is this duck looking ...
I want to kick in every d...
murder will out!!!
i am jack's complete lack...
apperently when going thr...
i was pregnant with jesus...
do eskimos really kiss wi...
Apprently planned paret h...
ILL MAKE YOU SNORT A LOT ...
The sun isn't getting any...
if life gives you lemons ...
i secretly hate my boyfri...
be yourself!!
I've been dreaming of lov...
I feel like vomiting up t...
I came, I saw, I kicked s...
THIS poo IS BANANAS!
10 characters? funk you!
I like sno-cones
I miss my pimp cane...=[
funk you? WHAT THE FU...
I HATE HIM 84874848484
She hates me :( now im sa...
V FDGRBFRHERX SCREW YO...
we're gonna need a bigger...
If your mom had a penis sh...
Opinions are like butthole...
what is "good" about good...
clocks lose track of time...
i am a alien
You cant make people see ...
These black tears I cry t...
Me too love chocolate
You're probably right!
Sure You can!
go go pokemon
wish i was rich
Walking in the dark can b...
is that your mating call ...
im bored,lets talk it up!...
i am a angry lama!!!!!!!!...
you deserve the best.
Destiny is no matter of c...
rain is life.
try before go away
me: I wonder how they mak...
An egg is tastier on the ...
We may have come over on ...
2pac tpain mbuttari ect
the internet finally prov...
When I woke up, the drago...
What you don't know can i...
adicena_cena,vladutz.roac...
doobe doobe doo
NO JOE THATS KILLER CHEES...
i love c4rlos...hes hot!
i just lost the game
Oh beautifull day but Tue...
Mon vi vinder udbuddet An...

Tags: random, thoughts

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10 March 2008 @ 10:23 pm

Ethnography

by Binding Designs Software

Ethnography Summary

Ethnography is, basically, the study of human behavior in their natural environment. “The Role of Ethnography in Interactive Systems Design” is an article that focuses on ethnography in the realm of designing interactive systems. Studies on humans, in their natural habitat, offer deeper information than in a mock environment. Societies, or organizations, should be used as a basis for design because societies and organizations are not always the same as one another. An interface should consider the different aspects of different classifications of users. The layered approach is used to allow people with more knowledge to control more advanced features allowing beginners to use the system. The professional can access places that the beginner can not. Different cultures should have different interfaces with access to the same features on the same levels just having the interface mold to the different characteristics of that culture. Each culture, or different classification of users, should, based on their experience, have access to all layers of a system equally. The only aspect in a system that should be changed is the interface which should be bent to fit around the characteristics of the class of users. That is, the pieces of a system that interact with pieces of other systems (the masking interface) should be the only pieces subject to change. The non-interactive pieces (the underlying functionality) of the system should not change.

The key to design with respect to ethnography is to make the situation focus on how it is in the “real world” disregarding made up environments. It is used to realize the best way to make a system highly successful in interaction. System is not specifically used to refer to computers in this context. It is more general focusing on systems as any structure that follows the laws of physics. Applied to human-computer interaction, it is the design of computers that interact with humans in their natural environment. All of the human factors would have to be taken into consideration and these factors can be better obtained while studying humans (just another system) acting in their natural environment. Since humans create computers, it is just one system (humans) interacting with another system (computers). Computers are designed to match “our world” and the way humans would interact the best, would be an environment that is most like our world. Or, an environment created better than “this world”. “This world” is referred to as humans interacting with everyday non-computer objects or “our world.” It is not exactly clear what the difference between a machine and computer is, but machines were created much before computers. Humans have adapted, in the human evolutionary sense, to using machines. This is referred to as early as cavemen and their primitive tools as being machines. Humans evolved, physically changed, to a species that uses tools, machines and computers.

“Naturalistic observation is the act of observing humans in their natural environment while they are unaware of being watched. In a way, this could be tied into ethnography because both processes involve the observation of subjects (in this sense, humans) while in their natural atmosphere. Psychologists use this technique when other methods of experimentation are not feasible. For example, naturalistic observation is used when a study on preschool children and how they interact with each other is being done. The children will not act naturally if known they are being observed. The same could be said for the science of ethnography. Humans, and any other mammals, will always act differently if they are aware of being observed. This is called, in psychology, the role of being the ‘good’ or ‘faithful’ subject. The ‘good’ subject will answer, or act, in ways that he/she thinks will be pleasing to the experimenter; or in this case, observer” (Baker 2006).

Tags: computer, hci, human, interaction

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10 March 2008 @ 10:19 pm

Bluetooth

Brought to you by Binding Designs, LLC

Introduction:

This paper is about the wireless technology, Bluetooth, focusing on the architecture & protocols. There are four sections in this paper starting with the introduction. This is the introduction to the paper. A brief summary of Bluetooth will be mentioned next. The Bluetooth Protocols & Architecture will be covered after that. Lastly, the conclusion will be covered. Bluetooth is a short-range wireless technology used for wireless communications for electronics. A protocol is a defined form of communication and is more closely related to the software in this paper. The architecture is the underlying hardware that the software is implemented on.

Bluetooth:

“Bluetooth is both a hardware-based radio system and a software stack that specifies the linkages between layers (Apple).” The stack based design is used to separate the different layers. “This supports flexibility in implementation across different devices and platforms. It also provides robust guidelines for maximum interoperability and compatibility (Apple).” There are Profiles in Bluetooth that “define how to use Bluetooth technology to accomplish specific tasks (Apple).” “The Protocol Stack is the core of the Bluetooth specification that defines how the technology works (Apple).” All of the different layers of functionality, from the higher to lower level protocols will be discussed in the next section.

The vCard is an example of a high level application for Bluetooth. The vCard is an electronic business card that can be sent from one Bluetooth device to another. The vCard application interfaces with OBEX (Object Exchange). OBEX interfaces with RFCOMM which interfaces with L2CAP (Logical Link and Control Adaptation Protocol). L2CAP sends the data to the Baseband which transmits the bits through the air via radio waves.

“The Bluetooth specification includes security features at the link level. It supports authentication (unidirectional or mutual) and encryption. These features are based on a secret link key that is shared by a pair of devices. To generate this key a pairing procedure is used when the two devices communicate for the first time (Muller)”.

Architecture & Protocols:

"By providing well-defined layers of functionality, the Bluetooth Specification ensures interoperability of Bluetooth devices and encourages adoption of Bluetooth technology (Apple)". These well-defined layers are similar to other networking stacks. This provides clear interfaces to the technologies. There are many popular protocols implemented directly on top of the Bluetooth protocols. The top of the stack, the application layer, are the general applications and profiles that are built for different Bluetooth devices. The applications and profiles layer is on top of the SDP (Service Discovery Protocol) layer. The SDP layer interfaces with the L2CAP layer. Also, the application and profiles layer is on top to OBEX which interfaces with RFCOMM (Serial Cable Emulation Protocol). Also, the applications and profiles layer directly interfaces with the RFCOMM layer. RFCOMM interfaces with L2CAP. L2CAP is on top of the HCI (Host Controller Interface) layer. After this it goes down to the Link manager layer, the Baseband/Link controller layer and then the Radio layer. (Apple) Some of the other upper-level layers include vCard/vCal, which is an application layer protocol. These are on top of OBEX. WAE (Wireless Application Environment) and WAP (Wireless Application Protocol) are two high level protocols on top of UDP (User Datagram Protocol). UDP/TCP (Transport Control Protocol)/IP (Internet Protocol), the internet protocols, is built on top of PPP (Point-to-Point Protocol) which can be built on top of the Bluetooth layers such as RFCOMM and L2CAP. Audio, like rock ‘n’ roll or heavy metal, directly interfaces with the Baseband layer. There are many protocols that are compatible with Bluetooth. Almost any protocol can be implemented on top of Bluetooth. It was designed to allow for this to happen. “Nevertheless, each one of these different protocol stacks uses a common Bluetooth data link and physical layer (Riku).”

“The Baseband and Link Control layer enables the physical RF link between Bluetooth units forming a piconet [1]. As the Bluetooth RF system is a Frequency-Hopping-Spread-Spectrum system in which packets are transmitted in defined time slots on defined frequencies, this layer uses inquiry and paging procedures to synchronize the transmission hopping frequency and clock of different Bluetooth devices.

It provides 2 different kind of physical links with their corresponding Baseband packets, Synchronous Connection-Oriented (SCO) and Asynchronous Connectionless (ACL) which can be transmitted in a multiplexing manner on the same RF link. ACL packets are used for data only, while the SCO packet can contain audio only or a combination of audio and data. All audio and data packets can be provided with different levels of FEC or CRC error correction and can be encrypted.

Furthermore, the different data types, including link management and control messages, are each allocated a special channel (Riku)”.

“The link manager protocol [2] is responsible for link set-up between Bluetooth devices. This includes security aspects like authentication and encryption by generating, exchanging and checking of link and encryption keys and the control and negotiation of Baseband packet sizes. Furthermore it controls the power modes and duty cycles of the Bluetooth radio device, and the connection states of a Bluetooth unit in a piconet (Riku)”.

“The Bluetooth logical link control and adaptation protocol (L2CAP) [3] adapts upper layer protocols over the baseband. It can be thought to work in parallel with LMP in difference that L2CAP provides services to the upper layer when the payload data is never sent at LMP messages.

L2CAP provides connection-oriented and connectionless data services to the upper layer protocols with protocol multiplexing capability, segmentation and reassembly operation, and group abstractions. L2CAP permits higher level protocols and applications to transmit and receive L2CAP data packets up to 64 kilobytes in length. Although the Baseband protocol provides the SCO and ACL link types, L2CAP is defined only for ACL links and no support for SCO links is specified in Bluetooth Specification 1.0 (Riku)”.

“Discovery services are crucial part of the Bluetooth framework. These services provide the basis for all the usage models. Using SDP, device information, services and the characteristics of the services can be queried and after that, a connection between two or more Bluetooth devices can be established. SDP is defined in the Service Discovery Protocol specification [4] (Riku)”.

“RFCOMM is a serial line emulation protocol and is based on ETSI 07.10 specification. This “cable replacement” protocol emulates RS-232 control and data signals over Bluetooth baseband, providing both transport capabilities for upper level services (e.g. OBEX) that use serial line as transport mechanism.RFCOMM is specified in [5] (Riku)”.

Conclusion:

Bluetooth is a well used technology that is both reliable and very secure. All of the core Bluetooth protocols and most of the Bluetooth related protocols were covered in detail throughout this paper. SDP is the protocol that is used to allow devices to discover each other upon user request. RFCOMM is the protocol used to emulate the commonly used ETSI 07.10 specification. L2CAP is the protocol that provides data services to the upper level layers. LMP is the protocol used to set up connections between devices. All of these protocols interface with each other in a manner that is organized and very scalable.

Kumar, C Bala, Kline, Paul J., Thomson, Timothy J., Bluetooth Application Programming with the Java APIs.

San Francisco: Morgan Kaufman Publishers, 2004.

Kurose, James F., Ross, Keith W., Computer Networking: a Top-down Approach Featuring the Internet 3^rd edition. Boston: Addison Wesley, 2005.

Riku, Mettala. Bluetooth Protocol Architecture. Bluetooth Special Interest Group, 1999.

Muller, Thomas. Bluetooth Security Architecture. Bluetooth Special Interest Group, 1999.

Apple. Bluetooth Architecture. Developer Connection, 2006.

Tags: bluetooth, software, wireless

Current Location: Boston, MA

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