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Topic: Stocks and flows


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  Stocks and flows in economics - Wikipedia, the free encyclopedia
In economics, the distinction is made between stocks and flows (or stock variables and flow variables).
Stocks include the total amount of equity holdings, the total amount of capital goods existing, the total value of real estate, etc., all existing at a specific time.
Flows include the total amount of consumer spending, the total amount of equities sold per day, interest payments on loans outstanding, etc., all happening over time.
en.wikipedia.org /wiki/Stocks_and_flows_in_economics   (219 words)

  
 [No title]   (Site not responding. Last check: 2007-11-05)
One of the fundamental skills a system dynamics modeler must learn is how to identify the stocks and flows in the system experiencing the problem that he or she is trying to model.
Stocks possess four characteristics that are crucial in determining the dynamic behavior of systems.
In this example, it is clear that the stock reaches each of its peaks and troughs after the flow reaches each of its corresponding peaks and troughs, during each repetition of the cycle.
www.systemdynamics.org /DL-IntroSysDyn/stock.htm   (1696 words)

  
 AusStats : Chapter 7: Flows, stocks and accounting rules
Flows refer to actions and to the effects of events that take place within a given period of time, while stocks refer to positions at a given point in time.
Stocks, which represent the value of the stock of assets and liabilities at the beginning and end of the accounting period, appear in the balance sheet accounts.
Stocks are connected with the flows in that changes in their levels result from the accumulation of transactions and other flows over the accounting period in question.
www.abs.gov.au /ausstats/abs@.nsf/66f306f503e529a5ca25697e0017661f/994da94e075bca4dca2569a400061622!OpenDocument   (4722 words)

  
 The Runge-Kutta Methods   (Site not responding. Last check: 2007-11-05)
This estimate is based on an average of flow values computed at the beginning, and at the end, of the DT interval.
Finally, the four intermediate flow calculations are averaged together, yielding an estimate of the flow.
It is this average flow that is used to update the stock before the next iteration begins.
hps-inc.com /community/support/documentation/simulation_algorithms/the_runge-kutta_methods.htm   (668 words)

  
 Eldis aggregation tool   (Site not responding. Last check: 2007-11-05)
The terms are “stock” and “flow” and this article is an introduction to these terms.
In this context, stock and flow are “states” of electronic communications.
Stock is where the flows go to retire — they provide a historical record of a flow.
radio.weblogs.com /0131591/2004/04/11.html   (2969 words)

  
 European Ombudsman Decision 1939/2002/IJH
If information on the stocks and flows of banknotes in the territories of different euro area Member States were to be made available to the public, it could jeopardise the security of both the storage of banknotes and their subsequent transfer between national central banks: these transfers are made to compensate for any (potential) shortages.
Nevertheless, an important reason for denying access to information on stocks and flows of banknotes in different Member States is the risk that third parties could misinterpret the information and thus make a false assessment of the availability of certain banknote denominations.
Disclosure of statistics about stocks and flows of Euro banknotes in the territories of different euro area Member States could undermine the interests set out in Article 4 of Decision ECB/1998/12, because it could jeopardise the security of both the storage of banknotes and their subsequent transfer between national central banks.
www.euro-ombudsman.eu.int /decision/en/021939.htm   (2487 words)

  
 Economics: Stocks and Flows
The notion of health as a stock of capital helps inform decisions in tort cases about how much a person should be paid to compensate for a loss of health caused by someone else.
The distinction between stocks and flows will come in handy in the discussions we will be getting into next.
The capital stock required to start an enterprise has to be expressed as a flow in order to calculate cost functions.
hadm.sph.sc.edu /Courses/Econ/Classes/Stocksandflows/Stocksandflows.html   (683 words)

  
 Ryten Report - Technical and Analytical Considerations
The principal reason for drawing attention to the distinction between stocks and flows is that planning the physician workforce is about influencing and determining the magnitudes of flows.
The chart shows the stock of physicians in the years 1997 and 1998 and accounts for the difference between the two numbers in terms of the flows into practice and out of practice.
In the previous section, we discussed the role of the flow of first-time entrants into practice each year as the key indicator of the rate at which the physician workforce is renewed, expanded or contracted.
www.anesthesia.org /acuda/en/ryten/ryten_part_6.html   (5442 words)

  
 Common Craft - Social Design for the Web: Introduction to Stocks and Flows in Online Communication (part 1 of 3)   (Site not responding. Last check: 2007-11-05)
In a meeting recently, Jerry Michalski drew a diagram of communication tools and media in the context of “stocks” and “flows”.
Communication is either in a state of flow or it is stocked, and sometimes in transit from one to the other.
In this case, the ultimate value came from using stocks and flows in concert.
www.commoncraft.com /archives/000593.html   (859 words)

  
 8902
By determining precisely what stock is needed when, and then holding suppliers accountable for providing that stock within hours or even minutes of the right time, inventory carrying costs are dramatically reduced and the production process will flow smoothly.
Flows, such as attrition, are simplified in these diagrams just as it is assumed that the populations within boxes are all the same.
Although some large corporations rely on complicated and expensive computer models to forecast stocks and flows, for many companies these simple diagrams may be all that are needed to visualize the future workforce.
home.gwu.edu /~stephenw/8902.htm   (2679 words)

  
 Ideas about nature's production   (Site not responding. Last check: 2007-11-05)
In coastal districts, air chilled during the night can flow out to sea; sea breezes rise by day if the air is still, giving the coasts their characteristically small daily range of temperature.
There are-many processes of materials flow operating within and on the surface of the "rock- sphere." The earthquakes, volcanoes, and landslides noted earlier are associated with it, as are the less dramatic processes of weathering and erosion.
These flows maintain ourselves as an integral part of a living world which we increasingly utilise and impinge upon as we proceed with an ever increasing pace and scale of economic development.
www.culturalecology.info /version2/Ideasaboutnature'sproduction.html   (17136 words)

  
 NAP Skim View of:
The most common and simplest material flows analysis is one performed for a single geographical region, for a single material, and at a specific point in time, for example, the amount of steel entering the United States in one year.
MATERIAL FLOWS ACCOUNTS OF LINKED SYSTEMS A substantial complexity in material cycle analyses arises if two or more cycles are closely coupled that is, if a change in stocks or flows, for example, in the cycle of one chemical species significantly influences the cycle of another.
Environmental, resource, and technology issues clearly intersect at different levels, as when energy use in rural Alabama contributes to the potential for global climate change or when the rate of extraction of metal ores is dramatically changed by population migration to rapidly evolving cities.
www.nap.edu /nap-cgi/skimit.cgi?isbn=0309089441&chap=83-92   (536 words)

  
 eGovernment Resource Centre: A Methodology for Data Quality Management   (Site not responding. Last check: 2007-11-05)
Stocks and flows improvements are represented with cycles rather than with terminating lines because data quality improvement is a continuous effort.  In most practical situations 100% data accuracy will never be achieved and the level of accuracy will have a component of random fluctuation.
Flow rate can be defined as the number of creates, inserts, updates and deletions per time period as a percentage of the average number of instances in the database over the same period.  The period depends on the business cycle but per annum is a good start.
Flows accuracy can be derived either by comparing new data in the database against the real world or by doing an independent check at the observation step in the data acquisition process (Figure 5).
www.egov.vic.gov.au /Research/WebSiteIssues/InformationManagement/dataqual1.htm   (2602 words)

  
 Understanding Stocks and Flows   (Site not responding. Last check: 2007-11-05)
The numerical value of a flow variable does depend on knowing the length of time over which it is measured.
Flows can always be compared to flows, provided that the time units are the same.
Stocks can always be compared to stocks, without much trouble.
www.suu.edu /faculty/tufte/ECON3020/Understanding_Stocks_and_Flows.html   (552 words)

  
 Page 6-Distinction between a stock and a flow
The distinction between stocks and flows is helpful in understanding many economic relationships — including, but not limited to, the categorization of resources.
The discussion below is designed to help you understand the general concept of stocks and flows, and then to use these concepts to categorize resources.
The distinction between stocks and flows can be summarized as follows: Stocks exist in specific quantities (even if the quantity is unknown) at any given point in time.
www.rci.rutgers.edu /~lsmall/Resources/StockVsFlow.htm   (94 words)

  
 MoneySense.ca: Stocks and Markets: Money flows   (Site not responding. Last check: 2007-11-05)
The major North American stock market indexes spent the better part of the first quarter of the year deep in the red.
Long-term expected earnings growth in the stocks comprising the SandP 500 was posted at 12.7% in March, down from a high of 18.7% in August 2000.
Still, demand for equities continues to be exceedingly weak, as retail investors for the most part have simply abandoned stocks altogether.
www.moneysense.ca /investing/stocks_markets/columnist.jsp;jsessionid=EANFCNHCNDCO?content=20030421_074340_3636   (1101 words)

  
 BBC NEWS | England | Cumbria | River flows increase fish stocks
Artificial floods are improving fish stocks in Cumbria, as part of a joint initiative between the Environment Agency and an energy distribution firm.
By releasing additional water from reservoirs, salmon and trout are being encouraged to spawn in tributaries of the rivers Eden and Derwent.
Stocks have been boosted with the help of United Utilities, which manages and operates the water network in Cumbria.
news.bbc.co.uk /1/hi/england/cumbria/4153703.stm   (185 words)

  
 Untitled Document
This heat flow depends on the temperature difference across the side wall, the thickness of the glass and the conductivity of the glass.
This means that the flow across 1 square meter of glass (with a thickness of 1 meter) would be 0.2 calories per second for each degree of temperature gradient across the surface.
Equations for the stocks and flows of the water temperature model.
www.wsu.edu /~forda/physics3.html   (706 words)

  
 soulsoup » Blog Archive » Stocks and Flows - Articulation Blog, e-learning, elearning, elearning blog, ...
Introduction to Stocks and Flows (2 of 3): Weblogs, Wikis and RSS
I was going through all of your posts in “ Technology in Plain English ” category after reading stocks and flow series.
In his post Lee mentioned wikis are predominantly stock resource, again a matter of debate, I think wikis can be used for conversation too.
incsub.org /soulsoup/index.php?p=56   (759 words)

  
 Yale Stocks and Flows   (Site not responding. Last check: 2007-11-05)
For a variety of reasons, those stocks may become inadequate or unavailable at some times or places in the future.
These issues can be addressed by developing cycles for the stocks and flows of materials of interest, particularly if the cycles are temporally and spatially resolved.
In this project, we are evaluating current and historical flows of specific technologically significant materials, determining the stocks available in different types of reservoirs and the flows among the reservoirs, and assessing the environmental and policy implications of the results.
research.yale.edu /stafproject/staf-project.html   (301 words)

  
 Stocks and Flows Modelling for Manpower Planning   (Site not responding. Last check: 2007-11-05)
Stocks and flows models are a more traditional method of modelling the forecast movement in recruitment, promotion, leavers, retirements etc. within a workforce group.
Although these models are usually written to a client's precise specification, the following - for a pharmacist workforce - is provided as an example.
In practice the model would be built to run for up to 10 years.
www.manpowerplanning.co.uk /Stock_flow.htm   (62 words)

  
 Paper M 19
It is capable of reproducing the system of stocks and flows distinguished for regional labour demand, because this segmentation is explicit part of the method.
That there is not one single, unambiguous way in distinguishing relevant stocks and flows for regional labour demand prove attempts by several researchers.
For a clear understanding of the significant stocks and flows that can be distinguished, we presented a systematic decomposition of the regional labour market.
www.ersa.org /ersaconfs/ersa97/sessions/paper-m/m19.htm   (10375 words)

  
 State of New Zealand's Environment 1997 - Chapter 7: State of the data [Ministry for the Environment]
Knowing how much water is falling, flowing, and stored in New Zealand is important for agriculture, forestry, electricity generation, flood and erosion control, drought impact management, urban water supply, recreational use of rivers, and maintaining the habitat and biodiversity of fish and other stream and river life.
With the establishment of catchment boards in the 1940s, monitoring was extended so that flood and erosion risk could be assessed and, in the 1960s, it was expanded still further so that water could be better managed to take account of its allocation and conservation.
Today, most monitoring of ground and surface water levels and river flows is undertaken by the successors to the catchment boards - regional councils and unitary authorities.
www.mfe.govt.nz /publications/ser/ser1997/html/chapter7.5.html   (2813 words)

  
 migrace online - Romanian Migration Abroad: Stocks and Flows after 1989   (Site not responding. Last check: 2007-11-05)
The temporary emigration from villages was higher for the larger villages of higher educational stock, smaller percentage of elderly people and having a high cultural (especially religious) diversity.
Villages of high rates of migration abroad are mainly located in the proximity of small towns from poor counties into non-isolated areas.
All the case studies indicate an increase in the role of the state as a significant actor in regulating the flows of temporary international migration.
www.migrationonline.cz /index.shtml?x=211628   (409 words)

  
 Common Craft - Social Design for the Web: Discussion on Introduction to Stocks and Flows in Online Communication (part ...   (Site not responding. Last check: 2007-11-05)
To quote: In this context, stock and flow are "states" of electronic communications.
Excerpt: "Communication is either in a state of flow or it is stocked, and sometimes in transit from one to the other.
Excerpt: In this context, stock and flow are
www.leelefever.com /mt/mt-tb.cgi?__mode=view&entry_id=593   (264 words)

  
 [No title]   (Site not responding. Last check: 2007-11-05)
The aim is to show that a stock of unemployment is the "natural" result of an incessant flow of workers losing their jobs and trying to meet the requirements of vacancies.
A comparison of unemployment rates and of flows of workers and jobs, and a clarification of the boundary between unemployment and inactivity leads us to conclude that exclusion from employment differs in the two countries.
When mobility flows are taken as a whole, we note that all flows towards and from E are of more or less the same magnitude in both countries.
forum.u-paris10.fr /telecharger/membres/larquier/sasebr.doc   (4981 words)

  
 2002 World Congress of Environmental and Resource Economists   (Site not responding. Last check: 2007-11-05)
The first is restoring the stock of quality.
The second is abating its flow of deterioration.
Although both approaches are widely used in real-world settings, analytic models have tended to focus on one strategy or the other.We consider a class of problems, which we call "SFQ" problems, in which both stocks and flows can be controlled to promote quality.
weber.ucsd.edu /%7Ecarsonvs/abstracts/2wcere_61.html   (224 words)

  
 Steady-State Economics by Herman E. Daly
The distinction between stocks and flows is the difference between accumulated wealth and current income.
Daly analyzes the relationship between the ecosystem and the economy in terms of stocks and flows.
Pollution and depreciation constitute a flow from the economy to the ecosystem, reducing economic stocks.
oak.cats.ohiou.edu /~piccard/entropy/daly.html   (661 words)

  
 Common Craft - Social Design for the Web: Introduction to Stocks and Flows (3 of 3): Back to Basics
To maximize flows from your web site, consider using notification systems like RSS or email to give your readers the ability to be notified as your website changes.
Looking at the web from the stock and flow perspective, its easy to put a lot of things in perspective.
Email is all about flow, with the ability to stock/archive stuff.
www.commoncraft.com /archives/000601.html   (1474 words)

  
 Forbes.com: US bonds the FX hub but stocks flows loom larger   (Site not responding. Last check: 2007-11-05)
CHICAGO, March 23 (Reuters) - Foreign exchange analysts seeking clues to the future of capital flows are turning their attention to equities, and when and why they may supplant bonds as the biggest magnet for cross-border currency flows.
Analysts argue that this sea change in investment flows is most likely to follow a change in the Federal Reserve Bank's stance on interest rates.
Stock quotes are delayed at least 15 minutes for Nasdaq, at least 20 minutes for NYSE/AMEX.
www.forbes.com /newswire/2004/03/23/rtr1308594.html   (986 words)

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