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“We find that people will copy your design no matter what you do,” she says. “You might as well just play the game and go ahead and innovate. It’s fun, it keeps us on our toes.”

“The open source model just forces us to innovate,” says Boudreaux.

the open hardware model means that SparkFun’s existence depends not on any particular product, but on an ongoing relationship with customers that’s not too dissimilar to the loyalty commanded by a fashion house.

wolf of obsolescence is always at electronics’ door

don’t spend much time worrying about the copyists, they just keep releasing new looks

it’s about staying relevant and filling the needs of the community

SparkFun’s rapid turnover model is one that echoes the fashion industry.

keep their service exemplary

listening to their customers

developed a community of loyal users and fans

weekly new product posts

You can learn a lot about what a company cares about by looking at what they give away and what they protect.

SparkFun’s actual value is in the community of fans and loyal customers that keep coming back, and the expertise under its roof in servicing their needs.

Their catalog has about 2,500 items at any given time

SparkFun orders parts from 500 suppliers

15 new products every week

hey retire products at a similar rate, due to either low sales, or obsolescence

Of the 2,500 items, about 400 are things designed internally.

To handle the pace of change, SparkFun needs to keep its inventory lean.

“We try to do small runs and order in small quantities. Especially something that’s going to be obsolete quickly.”

To help manage the demand, they use an in-house software system

along with inventory and CMS management, tries to predict demand for different components and ensure they get ordered with sufficient lead time to account for how long it takes to get there.

the innovation (revisions and new releases) here at SparkFun is organic and not planned,” says Boudreaux, “But we do a few things to make sure we are keeping up.”

monitors all costumer feedback from emails to the comment section that is present on every page of the company’s site. They also ensure that team members have time to tinker in the office, write tutorials, and visit hackerspaces and maker events. “For us, designing (and revising) widgets is the job.”

anyone in the company can suggest ideas and contribute designs.

ideas run through an internal process of design, review, prototyping, testing and release.

“They eat these products up, even if the products are not ready for the mainstream & educator community due to minimal documentation or stability.”

symbiotic relationship with these early adopters, where feedback helps SparkFun revised and improve products for use by the rest of the community

I don’t think they help much

The risk of this rate of change is that SparkFun can end up outpacing some of their customers.

“There’s balance in everything,” says Boudreaux, “Innovation does not necessarily need speed in order to create valuable change. Sometimes innovation works at a slower pace, but that does not mean it is any less valuable to those that benefit from it, and we are constantly balancing the needs of two very different customers.”

unprotected and unencumbered by patents

racing to get the latest, coolest things in the hands of its customers.

patents

“We have to be willing to kill ideas that don’t work, take a lot of tough criticism, and move fast. If we stay agile, we stay relevant.”

cost $30,000 to $50,000

USPTO is so backed up you’ll have to wait three to five years to even hear back on their decision.

how much does technology change in five years?

company’s blog where they’ve been documenting production and business practices for years.

they even want to open source Sparkle. “It’s a wild ride,” she says, “but a fun one for sure.”

Geographical access control may be enforced by personnel (e.g., border guard, bouncer, ticket checker)

n alternative of access control in the strict sense (physically controlling access itself) is a system of checking authorized presence, see e.g. Ticket controller (transportation). A variant is exit control, e.g. of a shop (checkout) or a country

access control refers to the practice of restricting entrance to a property, a building, or a room to authorized persons

can be achieved by a human (a guard, bouncer, or receptionist), through mechanical means such as locks and keys, or through technological means such as access control systems like the mantrap.

Physical access control is a matter of who, where, and when

Historically, this was partially accomplished through keys and locks. When a door is locked, only someone with a key can enter through the door, depending on how the lock is configured. Mechanical locks and keys do not allow restriction of the key holder to specific times or dates. Mechanical locks and keys do not provide records of the key used on any specific door, and the keys can be easily copied or transferred to an unauthorized person. When a mechanical key is lost or the key holder is no longer authorized to use the protected area, the locks must be re-keyed.[citation needed] Electronic access control uses computers to solve the limitations of mechanical locks and keys. A wide range of credentials can be used to replace mechanical keys. The electronic access control system grants access based on the credential presented. When access is granted, the door is unlocked for a predetermined time and the transaction is recorded. When access is refused, the door remains locked and the attempted access is recorded. The system will also monitor the door and alarm if the door is forced open or held open too long after being unlocked

When a credential is presented to a reader, the reader sends the credential’s information, usually a number, to a control panel, a highly reliable processor. The control panel compares the credential's number to an access control list, grants or denies the presented request, and sends a transaction log to a database. When access is denied based on the access control list, the door remains locked.

Access control system operation

The above description illustrates a single factor transaction. Credentials can be passed around, thus subverting the access control list. For example, Alice has access rights to the server room, but Bob does not. Alice either gives Bob her credential, or Bob takes it; he now has access to the server room. To prevent this, two-factor authentication can be used. In a two factor transaction, the presented credential and a second factor are needed for access to be granted; another factor can be a PIN, a second credential, operator intervention, or a biometric input

There are three types (factors) of authenticating information:[2] something the user knows, e.g. a password, pass-phrase or PIN something the user has, such as smart card or a key fob something the user is, such as fingerprint, verified by biometric measurement

Passwords are a common means of verifying a user's identity before access is given to information systems. In addition, a fourth factor of authentication is now recognized: someone you know, whereby another person who knows you can provide a human element of authentication in situations where systems have been set up to allow for such scenarios

Credential

A credential is a physical/tangible object, a piece of knowledge, or a facet of a person's physical being, that enables an individual access to a given physical facility or computer-based information system. Typically, credentials can be something a person knows (such as a number or PIN), something they have (such as an access badge), something they are (such as a biometric feature) or some combination of these items. This is known as multi-factor authentication. The typical credential is an access card or key-fob, and newer software can also turn users' smartphones into access devices.

An access control point, which can be a door, turnstile, parking gate, elevator, or other physical barrier, where granting access can be electronically controlled. Typically, the access point is a door. An electronic access control door can contain several elements. At its most basic, there is a stand-alone electric lock. The lock is unlocked by an operator with a switch. To automate this, operator intervention is replaced by a reader. The reader could be a keypad where a code is entered, it could be a card reader, or it could be a biometric reader. Readers do not usually make an access decision, but send a card number to an access control panel that verifies the number against an access list

monitor the door position

Generally only entry is controlled, and exit is uncontrolled. In cases where exit is also controlled, a second reader is used on the opposite side of the door. In cases where exit is not controlled, free exit, a device called a request-to-exit (REX) is used. Request-to-exit devices can be a push-button or a motion detector. When the button is pushed, or the motion detector detects motion at the door, the door alarm is temporarily ignored while the door is opened. Exiting a door without having to electrically unlock the door is called mechanical free egress. This is an important safety feature. In cases where the lock must be electrically unlocked on exit, the request-to-exit device also unlocks the doo

Access control topology

Access control decisions are made by comparing the credential to an access control list. This look-up can be done by a host or server, by an access control panel, or by a reader. The development of access control systems has seen a steady push of the look-up out from a central host to the edge of the system, or the reader. The predominant topology circa 2009 is hub and spoke with a control panel as the hub, and the readers as the spokes. The look-up and control functions are by the control panel. The spokes communicate through a serial connection; usually RS-485. Some manufactures are pushing the decision making to the edge by placing a controller at the door. The controllers are IP enabled, and connect to a host and database using standard networks

Access control readers may be classified by the functions they are able to perform

and forward it to a control panel.

Basic (non-intelligent) readers: simply read

Semi-intelligent readers: have all inputs and outputs necessary to control door hardware (lock, door contact, exit button), but do not make any access decisions. When a user presents a card or enters a PIN, the reader sends information to the main controller, and waits for its response. If the connection to the main controller is interrupted, such readers stop working, or function in a degraded mode. Usually semi-intelligent readers are connected to a control panel via an RS-485 bus.

Intelligent readers: have all inputs and outputs necessary to control door hardware; they also have memory and processing power necessary to make access decisions independently. Like semi-intelligent readers, they are connected to a control panel via an RS-485 bus. The control panel sends configuration updates, and retrieves events from the readers.

Systems with IP readers usually do not have traditional control panels, and readers communicate directly to a PC that acts as a host

a built in webservice to make it user friendly

Some readers may have additional features such as an LCD and function buttons for data collection purposes (i.e. clock-in/clock-out events for attendance reports), camera/speaker/microphone for intercom, and smart card read/write support

s. Euclidean space

metric space

topological space

Physical space is the extension surrounding a point

My presentation of a general theory of living systems will employ two sorts of spaces in which they may exist, physical or geographical space and conceptual or abstracted spaces

Physical or geographical space

Euclidean space

distance

moving

maximum speed

objects moving in such space cannot pass through one another

friction

The characteristics and constraints of physical space affect the action of all concrete systems, living and nonliving.

information can flow worldwide almost instantly

Physical space is a common space

Most people learn that physical space exists, which is not true of many spaces

They can give the location of objects in it

Conceptual or abstracted spaces

Peck order

Social class space

Social distance

Political distance

life space

semantic space

Sociometric space

A space of time costs of various modes of transportation

space of frequency of trade relations among nations.

A space of frequency of intermarriage among ethnic groups.

These conceptual and abstracted spaces do not have the same characteristics and are not subject to the same constraints as physical space

Social and some biological scientists find conceptual or abstracted spaces useful because they recognize that physical space is not a major determinant of certain processes in the living systems they study

interpersonal relations

one cannot measure comparable processes at different levels of systems, to confirm or disconfirm cross-level hypotheses, unless one can measure different levels of systems or dimensions in the same spaces or in different spaces with known transformations among them

It must be possible, moreover, to make such measurements precisely enough to demonstrate whether or not there is a formal identity across levels

fundamental "fourth dimension" of the physical space-time continuum

is the particular instant at which a structure exists or a process occurs

or the measured or measurable period over which a structure endures or a process continues.

durations

speeds

rates

accelerations

irreversible unidirectionality of time

thermodynamics

negentropy

"time's arrow."

Matter and energy

Matter is anything which has mass (m) and occupies physical space.

Energy (E) is defined in physics as the ability to do work.

kinetic energy

potential energy

rest mass energy

Mass and energy are equivalent

Living systems need specific types of matter-energy in adequate amounts

Energy for the processes of living systems is derived from the breakdown of molecules

Any change of state of matter-energy or its movement over space, from one point to another, I shall call action.

It is one form of process.

information (H)

Transmission of Information

Meaning is the significance of information to a system which processes it: it constitutes a change in that system's processes elicited by the information, often resulting from associations made to it on previous experience with it

Information is a simpler concept: the degrees of freedom that exist in a given situation to choose among signals, symbols, messages, or patterns to be transmitted.

The set of all these possible categories (the alphabet) is called the ensemble or repertoire

.) The unit is the binary digit, or bit of information

. The amount of information is measured as the logarithm to the base 2 of the number of alternate patterns

Signals convey information to the receiving system only if they do not duplicate information already in the receiver. As Gabor says:

[The information of a message can] be defined as the 'minimum number of binary decisions which enable the receiver to construct the message, on the basis of the data already available to him.'

meaning cannot be precisely measured

Information is the negative of uncertainty.

information is the amount of formal patterning or complexity in any system.

The term marker was used by von Neumann to refer to those observable bundles, units, or changes of matter-energy whose patterning bears or conveys the informational symbols from the ensemble or repertoire.

If a marker can assume n different states of which only one is present at any given time, it can represent at most log2n bits of information. The marker may be static, as in a book or in a computer's memory

Communication of almost every sort requires that the marker move in space, from the transmitting system to the receiving system, and this movement follows the same physical laws as the movement of any other sort of matter-energy. The advance of communication technology over the years has been in the direction of decreasing the matter-energy costs of storing and transmitting the markers which bear information.

There are, therefore, important practical matter-energy constraints upon the information processing of all living systems exerted by the nature of the matter-energy which composes their markers.

organization is based upon the interrelations among parts.

If two parts are interrelated either quantitatively or qualitatively, knowledge of the state of one must yield some information about the state of the other. Information measures can demonstrate when such relationships exist

The disorder, disorganization, lack of patterning, or randomness of organization of a system is known as its entropy (S)

the statistical measure for the negative of entropy is the same as that for information

entropy becomes a measure of the probability

Increase of entropy was thus interpreted as the passage of a system from less probable to more probable states.

according to the second law, a system tends to increase in entropy over time, it must tend to decrease in negentropy or information.

therefore no principle of the conservation of information

The total information can be decreased in any system without increasing it elsewhere

but it cannot be increased without decreasing it elsewhere

. Making one or more copies of a given informational pattern does not increase information overall, though it may increase the information in the system which receives the copied information.

transforms information into negative entropy

smallest possible amount of energy used in observing one bit of information

calculations of the amount of information accumulated by living systems throughout growth.

the concept of Prigogine that in an open system (that is one in which both matter and energy can be exchanged with the environment) the rate of entropy production within the system, which is always positive, is minimized when the system is in a steady state.

in systems with internal feedbacks, internal entropy production is not always minimized when the system is in a stationary state. In other words, feedback couplings between the system parameters may cause marked changes in the rate of development of entropy. Thus it may be concluded that the "information flow" which is essential for this feedback markedly alters energy utilization and the rate of development of entropy, at least in some such special cases which involve feedback control. While the explanation of this is not clear, it suggests an important relationship between information and entropy

amount of energy actually required to transmit the information in the channel is a minute part of the total energy in the system, the "housekeeping energy" being by far the largest part of it

In recent years systems theorists have been fascinated by the new ways to study and measure information flows, but matter-energy flows are equally important. Systems theory is more than information theory, since it must also deal with energetics - such matters as

the flow of raw materials through societies

Only a minute fraction of the energy used by most living systems is employed for information processing

I have noted above that the movement of matter-energy over space, action, is one form of process. Another form of process is information processing or communication, which is the change of information from one state to another or its movement from one point to another over space

Communications, while being processed, are often shifted from one matter-energy state to another, from one sort of marker to another

transformations go on in living systems

One basic reason why communication is of fundamental importance is that informational patterns can be processed over space and the local matter-energy at the receiving point can be organized to conform to, or comply with, this information

the delivery of "flowers by telegraph."

Matter-energy and information always flow together

Information is always borne on a marker

. Conversely there is no regular movement in a system unless there is a difference in potential between two points, which is negative entropy or information

If the receiver responds primarily to the material or energic aspect, I shall call it, for brevity, a matter-energy transmission; if the response is primarily to the information, I shall call it an information transmission

Moreover, just as living systems must have specific forms of matter-energy, so they must have specific patterns of information

example

example

develop normally

have appropriate information inputs in infancy

pairs of antonyms

one member of which is associated with the concept of information (H)

the other member of which is associated with its negative, entropy (S)

System

A system is a set of interacting units with relationships among them

.The word "set" implies that the units have some common properties. These common properties are essential if the units are to interact or have relationships. The state of each unit is constrained by, conditioned by, or dependent on the state of other units. The units are coupled. Moreover, there is at least one measure of the sum of its units which is larger than the sum of that measure of its units.

Conceptual system

Units

terms

Relationships

a set of pairs of units, each pair being ordered in a similar way

expressed by words

or by logical or mathematical symbols

operations

The conceptual systems of science

observer

selects

particular sets to study

Variable

Each member of such a set becomes a variable of the observer's conceptual system

conceptual system may be loose or precise, simple or elaborate

Indicator

an instrument or technique used to measure fluctuations of variables in concrete systems

Function

a correspondence between two variables, x and y, such that for each value of x there is a definite value of y, and no two y's have the same x, and this correspondence is: determined by some rule

Any function is a simple conceptual system

Parameter

An independent variable through functions of which other functions may be expressed

The state of a conceptual system

the set of values on some scale, numerical or otherwise, which its variables have at a given instant

Formal identity

variables

varies comparably to a variable in another system

If these comparable variations are so similar that they can be expressed by the same function, a formal identity exists between the two systems

Relationships between conceptual and other sorts of systems

Science advances as the formal identity or isomorphism increases between a theoretical conceptual system and objective findings about concrete or abstracted systems

A conceptual system may be purely logical or mathematical, or its terms and relationships may be intended to have some sort of formal identity or isomorphism with units and relationships empirically determinable by some operation carried out by an observer

Concrete system

a nonrandom accumulation of matter-energy, in a region in physical space-time, which is organized into interacting interrelated subsystems or components.

Units

are also concrete systems

Relationships

spatial

temporal

spatiotemporal

causal

Both units and relationships in concrete systems are empirically determinable by some operation carried out by an observer

patterns of relationships or processes

The observer of a concrete system

distinguishes a concrete system from unorganized entities in its environment by the following criteria

physical proximity of its units

similarity of its units

common fate of its units

distinct or recognizable patterning of its units.

Their boundaries are discovered by empirical operations available to the general scientific community rather than set conceptually by a single observer

Variable of a concrete system

Any property of a unit or relationship within a system which can be recognized by an observer

which can potentially change over time, and whose change can potentially be measured by specific operations, is a variable of a concrete system

Examples

number of its subsystems or components, its size, its rate of movement in space, its rate of growth, the number of bits of information it can process per second, or the intensity of a sound to which it responds

A variable is intrasystemic

not to be confused with intersystemic variations which may be observed among individual systems, types, or levels.

The state of a concrete system

its structure

represented by the set of values on some scale which its variables have at that instant

Open system

Most concrete systems have boundaries which are at least partially permeable, permitting sizable magnitudes of at least certain sorts of matter-energy or information transmissions to pass them. Such a system is an open system. In open systems entropy may increase, remain in steady state, or decrease.

Closed system

impermeable boundaries through which no matter-energy or information transmissions of any sort can occur is a closed system

special case

No actual concrete system is completely closed

In closed systems, entropy generally increases, exceptions being when certain reversible processes are carried on which do not increase it. It can never decrease.

Nonliving system

the general case of concrete systems, of which living systems are a very special case. Nonliving systems need not have the same critical subsystems as living systems, though they often have some of them

Living system

a special subset of the set of all possible concrete systems

They all have the following characteristics:

open systems

inputs

throughputs

outputs

of various sorts of matter-energy and information.

maintain a steady state of negentropy even though entropic changes occur in them as they do everywhere else

by taking in inputs

higher in complexity or organization or negentropy

than their outputs

The difference permits them to restore their own energy and repair breakdowns in their own organized structure.

In living systems many substances are produced as well as broken down

To do this such systems must be open and have continual inputs of matter-energy and information

entropy will always increase in walled-off living systems

They have more than a certain minimum degree of complexity

They either contain genetic material composed of deoxyribonucleic acid (DNA)

or have a charter

blueprint

program

of their structure and process from the moment of their origin

may also include nonliving components.

They have a decider, the essential critical sub-system which controls the entire system, causing its subsystems and components to interact. Without such interaction under decider control there is no system.

other specific critical sub-systems or they have symbiotic or parasitic relationships with other living or nonliving systems

Their subsystems are integrated together to form actively self-regulating, developing, unitary systems with purposes and goals

They can exist only in a certain environment

change in their environment

produces stresses

Totipotential system

capable of carrying out all critical subsystem processes necessary for life is totipotential

Partipotential system

does not itself carry out all critical subsystem processes is partipotential

A partipotential system must interact with other systems that can carry out the processes which it does not, or it will not survive

parasitic

symbiotic

Fully functioning system

when it

Partially functioning system

it must do its own deciding, or it is not a system

Abstracted system

Units

relationships abstracted or selected by an observer in the light of his interests, theoretical viewpoint, or philosophical bias.

Some relationships may be empirically determinable by some operation carried out by the observer, but others are not, being only his concepts

Relationships

The relationships mentioned above are observed to inhere and interact in concrete, usually living, systems

these concrete systems are the relationships of abstracted systems.

The verbal usages of theoretical statements concerning abstracted systems are often the reverse of those concerning concrete systems

An abstracted system differs from an abstraction, which is a concept

representing a class of phenomena all of which are considered to have some similar "class characteristic." The members of such a class are not thought to interact or be interrelated, as are the relationships in an abstracted system

Abstracted systems are much more common in social science theory than in natural science.

are oriented toward relationships rather than toward the concrete systems

spatial arrangements are not usually emphasized

their physical limits often do not coincide spatially with the boundaries of any concrete system, although they may.

important difference between the physical and biological hierarchies, on the one hand, and social hierarchies, on the other

Most physical and biological hierarchies are described in spatial terms

we propose to identify social hierarchies not by observing who lives close to whom but by observing who interacts with whom

intensity of interaction

in most biological and physical systems relatively intense interaction implies relative spatial propinquity

To the extent that interactions are channeled through specialized communications and transportation systems, spatial propinquity becomes less determinative of structure.

PARSONS

the unit of a partial social system is a role and not the individual.

culture

cumulative body of knowledge of the past, contained in memories and assumptions of people who express this knowledge in definite ways

The social system is the actual habitual network of communication between people.

RUESCH

A social system is a behavioral system

It is an organized set of behaviors of persons interacting with each other: a pattern of roles.

The roles are the units of a social system

On the other hand, the society is an aggregate of social subsystems, and as a limiting case it is that social system which comprises all the roles of all the individuals who participate.

What Ruesch calls the social system is something concrete in space-time, observable and presumably measurable by techniques like those of natural science

To Parsons the system is abstracted from this, being the set of relationships which are the form of organization. To him the important units are classes of input-output relationships of subsystems rather than the subsystems themselves

system is a system of relationship in action, it is neither a physical organism nor an object of physical perception

evolution

differentiation

growth

from earlier and simpler forms and functions

capacities for specializations and gradients

[action] is not concerned with the internal structure of processes of the organism, but is concerned with the organism as a unit in a set of relationships and the other terms of that relationship, which he calls situation

Abstracted versus concrete systems

One fundamental distinction between abstracted and concrete systems is that the boundaries of abstracted systems may at times be conceptually established at regions which cut through the units and relationships in the physical space occupied by concrete systems, but the boundaries of these latter systems are always set at regions which include within them all the units and internal relationships of each system

A science of abstracted systems certainly is possible and under some conditions may be useful.

If the diverse fields of science are to be unified, it would be helpful if all disciplines were oriented either to concrete or to abstracted systems.

It is of paramount importance for scientists to distinguish clearly between them

There’s an opportunity to disrupt how those organizations work. Intermediaries, though they do a good job, have a few problems — they’re centralized, which makes them vulnerable to attack or failure

They tax the system

They capture data

They exclude billions of people from the global economy

internet of value

With blockchain, we can go from redistributing wealth to distributing value and opportunity value fairly a priori, from cradle to grave.

creating a true sharing economy by replacing service aggregators like Uber with distributed applications on the blockchain

unleashing a new age of entrepreneurship

build accountable governments through transparency, smart contracts and revitalized models of democracy.

The virtual you is owned by large intermediaries

This virtual you knows more about you than you do sometimes

So there’s a strange phenomenon from the first generation of the Internet where the most important asset class that’s been created is data —and we don’t control it or own it.

individuals taking back their identity through your own personal avatar

The financial services industry

antiquated

a complicated machine that does a simple thing

settlement

an opportunity to profoundly change the nature of the entire industry. The Starbucks transaction should be instant.

At the heart of it, the financial services industry moves value.

so this is both an existential threat to the financial services industry and an historic opportunity.

Banks trade on trust

Within the decade, every single financial asset, which is really just a contract

will all move to a blockchain-based format

In the accounting world, a lot of firms rely on costly audits to drive their profits

With blockchain, you could have a third entry time-stamped in a distributed ledger that could be acceptable to any relevant stakeholders from regulators to shareholders, giving you a perfect record of the truth and thus the financial health of an organization.

Nobel-winning economist Ronald Coase argued that firms exist because transaction costs in an open market are greater than the cost of doing things inside the boundaries of the corporation.

four costs — of search, coordination, contracting and establishing trust

Blockchains will profoundly affect all of these.

you can now synthesize trust on an open platform and people who’ve never met can trust each other to do certain things. So this results in a whole number of new business models

It turns out the Internet of Everything needs a Ledger of Everything, because a lightbulb buying power from your neighbor’s solar panel definitely won’t use banks or the Visa network

Right now, governments take tax revenue from corporations, individuals, licenses and so on. All of that can change. We can first of all have transparency in a radical sense because sunlight is the best disinfectant. Secondly, we can open up governments in a different sense of sharing data.

governments can enable self-organization to occur in society where companies, civil society organizations, NGOs, academics, foundations, and government agencies and individual citizens ought to use this data to self-organize and create what we used to call services or forms of public value. The third one has to do with the relationship between citizens and their governments.

There are more opportunities to create government by the people for the people

Electronic voting won’t be delivered by traditional server technology because it won’t be trusted by citizens