Group items tagged

cognitive perspective

continuous process integrated in the interaction with the environment

normative perspective

logic of decision making

and rationality

decision making is a reasoning or emotional process which can be rational or irrational, can be based on explicit assumptions or tacit assumptions.

Logical decision making

making informed decisions

recognition primed decision approach

without weighing alternatives

integrated uncertainty into the decision making process

A major part of decision making involves the analysis of a finite set of alternatives described in terms of some evaluative criteria.

multi-criteria decision analysis (MCDA) also known as multi-criteria decision making (MCDM).

differentiate between problem analysis and decision making

Problem analysis must be done first, then the information gathered in that process may be used towards decision making.[4]

decision making techniques people use in everyday life

Pros and Cons

Simple Prioritization:

Decision-Making Stages

Orientation stage

Conflict stage

Emergence stage

Reinforcement stage

Decision-Making Steps

Outline your goal and outcome

Gather data

Brainstorm to develop alternatives

List pros and cons of each alternative

Make the decision

take action

Learn from, and reflect on the decision making

Cognitive and personal biases

Selective search for evidence

Premature termination of search for evidence

Inertia

Selective perception

Wishful thinking or optimism bias

Choice-supportive bias

Recency

Repetition bias

Anchoring and adjustment

Group think – Peer pressure

Source credibility bias

Incremental decision making and escalating commitment

Attribution asymmetry

Role fulfillment

Underestimating uncertainty and the illusion of control

a person's decision making process depends to a significant degree on their cognitive style

thinking and feeling; extroversion and introversion; judgment and perception; and sensing and intuition.

someone who scored near the thinking, extroversion, sensing, and judgment

would tend to have a logical, analytical, objective, critical, and empirical decision making style.

national or cross-cultural differences

distinctive national style of decision making

human decision-making is limited by available information, available time, and the information-processing ability of the mind.

two cognitive styles: maximizers

satisficers

let's consider the terminology we use for events

event triggers

triggers

in response

event handler

event

onInstall function

onOpen function.

onEdit function

the simple event handlers are restricted in what they are permitted to do:

The spreadsheet containing the script must be opened for editing

cannot determine the current user

cannot access any services that require authentication as that user

Calendar, Mail and Site are not anonymous and the simple event handlers cannot access those services.

can only modify the current spreadsheet. Access to other spreadsheets is forbidden.

see Understanding Permissions and Script Execution.

The onOpen function runs automatically when a user opens a spreadsheet.

add custom menu items to the spreadsheet's menu bar.

onEdit function runs automatically when any cell of the spreadsheet is edited.

record the last modified time in a comment on the cell that was edited.

The onInstall function is called when a script is installed from the Script Gallery.

setting up custom menus for the user.

the script can call onOpen from onInstall.

Installable event handlers are set on the Triggers menu within the Script Editor, and they're called triggers in this document.

When a specific time is reached

When a form is submitted

When a Spreadsheet is edited

When a Spreadsheet is opened.

They can potentially access all services available to the user who installed the handler.

are fully-capable scripts with none of the access limitations of simple event handlers

may not be able to determine which user triggered the event being handled

The spreadsheet containing the script does not have to be open for the event to be triggered and the script to run.

You can connect triggers to one or more functions in a script. Any function can have multiple triggers attached. In addition, you can add trigger attributes to a function to further refine how the trigger behaves.

When a script runs because of a trigger, the script runs using the identity of the person who installed the trigger, not the identity of the user whose action triggered the event. This is for security reasons.

Installing an event handler may prompt for authorization to access

An event is passed to every event handler as the argument (e). You can add attributes to the (e) argument that further define how the trigger works or that capture information about how the script was triggered.

an example of a function that sends email to a designated individual containing information captured by a Spreadsheet when a form is submitted.

With Google Apps, forms have the option to automatically record the submitter's username, and this is available to the script as e.namedValues["Username"]. Note: e.namedValues are only available for Google Apps domains and not for consumer Google accounts.

The available attributes for triggers are described in the following tables.

you will want the custom menu to be displayed as soon as the Spreadsheet is opened. To do this,include an onOpen function in your script

array of objects

An array is a collection of elements that works something like a Spreadsheet. Each element in an array can be identified by its location in the array, called an index point.

Arrays

are zero-based

Arrays are a convenient way to store and manipulate data within a computer program or script.

Each menu item is placed inside curly braces, and this syntax defines each name-function name pair as an object.

After the definition of the menu entries comes the definition of the menu itself:

Here's generalized code for creating menu items and a menu.

The following code pops up a message box when a user selects a menu item on the new menu:

the generalized code

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

Credential

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

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.

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.