:: wikimiki.org ::
| Accretion |
AccretionAccretion, means any growth or increase in size by a gradual external addition or inclusion.
The term accretion is used in the following areas:
- In finance, accretion is predictable changes in the price of certain securities.
- In geography, accretion means an increase of land by the deposit of waterborne sediment.
- In science, accretion is increase in size by gradual addition of smaller parts.
The planets in our solar system formed through the process of accretion.
FinanceFinance studies and addresses the ways in which individuals, businesses and organizations raise, allocate and use monetary resources over time, taking into account the risks entailed in their projects. The term finance may thus incorporate any of the following:
- The study of money and other assets
- The management and control of those assets
- Profiling and managing project risks
- As a verb, "to finance" is to provide funds for business.
Examples of some basic financial concepts
The activity of finance is the application of a set of techniques that individuals and organizations (entities) use to manage their financial affairs, particularly the differences between income and expenditure and the risks of their investments.
An entity whose income exceeds its expenditure can lend or invest the excess income. On the other hand, an entity whose income is less than its expenditure can raise capital by borrowing or selling equity claims, decreasing its expenses, or increasing its income. The lender can find a borrower, a financial intermediary, such as a bank or buy notes or bonds in the bond market. The lender receives interest, the borrower pays a higher interest than the lender receives, and the financial intermediary pockets the difference.
A bank aggregates the activities of many borrowers and lenders. A bank accepts deposits from lenders, on which it pays interest. The bank then lends these deposits to borrowers. Banks allow borrowers and lenders of different sizes to coordinate their activity. Banks are thus compensators of money flows in space since they allow different lenders and borrows to meet, and in time, since every borrower will eventually pay back.
A specific example of corporate finance is the sale of stock by a company to institutional investors like investment banks, who in turn generally sell it to the public. The stock gives whoever owns it part ownership in that company. If you buy one share of XYZ inc, and they have 100 shares available, you are 1/100 owner of that company. You own 1/100 of anything on the asset side of the balance sheet. Of course, in return for the stock, the company receives cash, which it uses to expand its business in a process called "equity financing". Equity financing mixed with the sale of bonds (or any other debt financing) is called the company's capital structure.
Finance is used by individuals (personal finance), by governments (public finance), by businesses (corporate finance ), etc., as well as by a wide variety of organizations including schools and non-profit organizations. In general, the goals of each of the above activities are achieved through the use of appropriate financial instruments, with consideration to their institutional setting.
Personal finance
Questions in personal finance revolve around
- How much money will be needed by an individual (or a family) at various points in the future?
- Where will this money come from (e.g. savings or borrowing)?
- How do I protect myself against unforeseen events?
- How can family assets be best transfered across generations (bequests and inheritance)?
- How do taxes (tax subsidies or penalties) affect personal financial decisions?
Personal financial decisions involve paying for education, financing durable goods such as real estate and cars, buying insurance, e.g. health and property insurance, investing and saving for retirement.
Business finance
In the case of a company, managerial finance or corporate finance is the task of providing the funds for the corporations' activities. It generally involves balancing risk and profitability.
Long term funds would be provided by equity and long-term credit, often in form of bonds. These decisions lead to the company's capital structure. Short term funding or working capital is mostly provided by banks extending a line of credit.
On the bond market, borrowers package their debt in the form of bonds. The borrower receives the money it borrows by selling the bond, which includes a promise to repay the value of the bond with interest. The purchaser of a bond can resell the bond, so the actual recipient of interest payments can change over time. Bonds allow lenders to recoup the value of their loan by simply selling the bond.
Another business decision concerning finance is investment, or fund management. An investment is an acquisition of an asset in the hopes that it will maintain or increase its value. In investment management - in choosing a portfolio - one has to decide what, how much and when to invest. In doing so, one needs to
- Identify relevant objectives and constraints: institution or individual - goals - time horizon - risk aversion - tax considerations
- Identify the appropriate strategy: active vs passive - hedging strategy
- Measure the portfolio performance
Financial management is duplicate with the financial function of the accounting profession. However, accounting is concerned with reporting of historical financial information, while the financial decision is directed toward the future of the firm.
Finance of states
Country, state, county, city or municipality finance is called public finance. It is concerned with
- Identification of required expenditure of a public sector entity
- Source(s) of that entity's revenue
- The budgeting process
- Debt issuance (municipal bonds) for public works projects
Financial economics
Financial economics is the branch of economics studying the interrelation of financial variables, s.a. prices, interest rates and shares as opposed to those concerning the real economy. Financial economics concentrates on influences of real economic variables on financial ones, in contrast to pure finance.
It studies:
- Valuation - Determination of the fair value of an asset
- How risky is the asset? (identification of the asset appropriate discount rate)
- What cash flows will it produce? (discounting of relevant cash flows)
- How does the market price compare to similar assets? (relative valuation)
- Are the cash flows dependent on some other asset or event? (derivatives, contingent claim valuation)
- Financial markets and instruments
- Commodities - topics
- Stocks - topics
- Bonds - topics
- Money market instruments- topics
- Derivatives - topics
- Financial institutions and regulation
Financial mathematics
Financial mathematics is the branch of applied mathematics concerned with the financial markets. Financial mathematics is the study of financial data with the tools of mathematics, mainly statistics. Such data can be movements of securities - stocks and bonds etc. - and their relations. Another large subfield is insurance mathematics.
See also
- Funding, a synonym of financing
- There are also over 250 other finance articles in Wikipedia. See list of finance topics.
- Important publications in finance
External links
- For an in-depth finance glossary, see Glyn A. Holton's [http://www.riskglossary.com riskglossary]
- For finance theory and investing models, see [http://www.12manage.com/i_fi.html 12manage]
- For a Hypertextual Finance Glossary, see [http://www.duke.edu/~charvey/Classes/wpg/glossary.htm Prof. Campbell R. Harvey]
- For a Free Derivatives Valuation and Calculation site, see [http://www.derivativeone.com Financial Derivatives Valuation and Calculators]
- For material covering three areas in finance - corporate finance, valuation and investment management, see [http://pages.stern.nyu.edu/~adamodar/ Prof. Aswath Damodaran]
- For links to finance web sites, grouped by topic see [http://web.utk.edu/~jwachowi/wacho_world.html#Part%20I Web Sites for Discerning Finance Students], Prof. John M. Wachowicz
- For list of online brokerages, online trading resources see [http://www.peoplenmoney.com/online_brokers/online_brokers.html The most complete list of online brokers www.peopleNmoney.com]
- For articles on current corporate finance and investment issues, visit [http://www.oaktree-research.com Oaktree Research], a financial education portal
- The introductory finance web site at the University of Arizona, [http://www.studyfinance.com/ studyfinance.com]
- For illustrative (simpler) worked examples covering several of these topics see [http://www.teachmefinance.com teachmefinance]
- For introductory articles covering mathematical finance see [http://www.quantnotes.com/fundamentals/ quantnotes]
- For introductory articles, a full glossary and links to resources on behavioral finance see the [http://perso.wanadoo.fr/pgreenfinch/behavioral-finance.htm BF gallery]
- An extensive resource for mathematical and quantitative finance at [http://www.moneyscience.org moneyscience.org]
- For a English to Spanish Financial Dictionary [http://www.spanish-translator-services.com/dictionaries/finance-english-spanish/index.htm English to Spanish Dictionary of Finance Terms]
- For a Spanish to English Financial Dictionary [http://www.spanish-translator-services.com/dictionaries/finance-spanish-english/index.htm Spanish to English Dictionary of Finance Terms]
- For introductory articles and advanced discussion of finance with a focus on investing, see [http://www.investopedia.com investopedia].
-
ja:金融
th:การเงิน
Geography)]]
Geography is the study of the locational and spatial variation of both natural and human phenomena on Earth. The word derives from the Greek words Ge (γη) or Gaea (γεια), both meaning "Earth", and graphein (γραφειν) meaning "to describe" and "to write".
Modern geography is a diverse discipline that draws influence from almost every other arena of knowledge. Geographers engage with other disciplines according to their particular research interests and, while subjects such as biology and economics have a powerful influence, there are geographers who use concepts taken from subjects such as sociology, psychology and sports science, among many others.
Within the discipline there have been many long-running tensions among those seeking to define geography - whether as a 'science' or as a 'humanity', as a 'systematic' subject or 'regional' specialism and so forth - which at various times have come close to destroying geography as an academic discipline. Whilst profound differences do exist among geographers, the dual concepts of space and place provide a commonality of interest, which gives the subject a unique identity.
Structure of geography
William Hughes - who taught the geography of the Holy Lands to divinity students at King's College London - defined geography in an address in 1863:
:"Mere place names are not geography. To know by heart a whole gazeteer full of them would not, in itself, constitute anyone a geographer. Geography has higher aims than this: it seeks to classify phenomena (alike of the natural and of the political world insofar as it treats of the latter) to compare, to generalise, to ascend from effects to causes and in doing so to trace out the great laws of nature and to mark their influence upon man. In a word, geography is a science, a thing not of mere names, but of argument and reason, of cause and effect."
This was a specific rejection of geography as a merely descriptive discipline and also defined it as inclusive of both the physical world and the human. Within the discipline, however, there are many areas of specialism. Modern geographers tend to specialise in one of the broad branches (or sub-branches). However, most introductory geography syllabuses seek to ensure that geographers have at least working knowledge of the main focus of each branch of the subject.
Physical geography
Physical geography (or physiogeography) focuses on geography as an Earth science. It aims to understand the physical layout of the Earth, its weather and global flora and fauna patterns. Many areas of physical geography make use of geology, particularly in the study of weathering and sediment movement.
Physical Geography can be divided into the following broad categories:
- Geomorphology
- Hydrology
- Glaciology
- Biogeography
- Climatology
- Pedology (soil study)
- Coastal/Marine studies
- Geodesy
- Palaeogeography
- Environmental Geography and management
- Landscape ecology
Exact lines between these different areas are often difficult to draw. Sometimes Oceanography is included as a branch within physical geography, but is now considered a separate subject in its own right.
Related topics: Atmosphere - Archipelago - Continent - Desert - Island - Landform - Ocean - Sea - River - Lake - Ecology - Soil - Timeline of geography, paleontology - Geostatistics - Environmental science - Oceanography - Environmental studies
Human geography
Human geography is a branch of geography that focuses on the study of patterns and processes that shape human interaction with various environments. It encompasses human, political, cultural, social, and economic aspects. While the major focus of human geography is not the physical landscape of the Earth (see Physical geography) it is hardly possible to discuss human geography without referring to the physical landscape on which human activities are being played out, and environmental geography is emerging as a link between the two.
Human geography can be divided into broad categories, such as:
- Economic geography
- Development geography
- Population geography or Demography
-
- Urban geography
- Social geography
- Behavioral geography
- Cultural geography
- Political geography, including Geopolitics
-
- Historical geography
- Regional science
- Strategic geography
- Military geography
- Feminist geography
- Distinction between these fields of study have become increasingly blurred over time and the above list should not be considered definitive.
Related topics: Countries of the world - Country - Nation - State - Personal union - Province - County - City - Municipality - Central place theory - Urban morphology
Socio-environmental geography
During the time of environmental determinism, geography was defined not as the study of spatial relationships, but as the study of how humans and the natural environment interact. Though environmental determinism has died out, there remains a strong tradition of geographers addressing the relationships between people and nature. There are two main subfields of socio-environmental geography:
- cultural and political ecology (CAPE) and
- risk-hazards research.
Cultural and political ecology
Cultural ecology grew out of the work of Carl Sauer in geography and a similar school of thought in anthropology. It examined how human societies adapt themselves to the natural environment. Sustainability science has been one important outgrowth of this tradition. Political ecology arose when some geographers used aspects of critical geography to look at relations of power and how they affect people's use of the environment. For example, an influential study by Michael Watts argued that famines in the Sahel are caused by the changes in the region's political and economic system as a result of colonialism and the spread of capitalism.
Risk-hazards research
Research on hazards began with the work of geographer Gilbert F. White, who sought to understand why people live in disaster-prone floodplains. Since then, the hazards field has expanded to become a multidisciplinary field examining both natural hazards (such as earthquakes) and technological hazards (such as nuclear reactor meltdowns). Geographers studying hazards are interested in both the dynamics of the hazard event and how people and societies deal with it.
Historical geography
This branch seeks to determine how cultural features of the multifarious societies across the planet evolved and came into being. Study of the landscape is one of many key foci in this field - much can be deduced about earlier societies from their impact on their local environment and surroundings.
; What's in a name? Historical geography and the Berkeley School
"Historical Geography" can indeed refer to the reciprocal effects of geography and history on each other. But in the United States, it has a more specialized meaning: This is the name given by Carl Ortwin Sauer of the University of California, Berkeley to his program of reorganizing cultural geography (some say all geography) along regional lines, beginning in the first decades of the 20th Century.
To Sauer, a landscape and the cultures in it could only be understood if all of its influences through history were taken into account: Physical, cultural, economic, political, environmental. Sauer stressed regional specialization as the only means of gaining expertise on regions of the world.
Sauer's philosophy was the principal shaper of American geographic thought in the mid-20th century. Regional specialists remain in academic geography departments to this day. But many geographers feel that it harmed the discipline in the long run: Too much effort was spent on data collection and classification, and too little on analysis and explanation. Studies became more and more area specific as later geographers struggled to find places to make names for themselves. This probably led in turn to the 1950s crisis in Geography which nearly destroyed it as an academic discipline.
History of geography
:See main article: History of geography
History of geography
The Greeks are the first known culture to actively explore geography as a science and philosophy. Mapping by the Romans as they explored new lands added new techniques. During the Middle Ages, Arabs such as Idrisi, Ibn Batutta, and Ibn Khaldun maintained the Greek and Roman techniques and developed new ones.
Following the journeys of Marco Polo, interest in geography spread throughout Europe. The great voyages of exploration in 16th and 17th centuries revived a desire for both accurate geographic detail, and more solid theoretical foundations. This period is also known as Great Geographical Discoveries. By the 18th century, geography had become recognized as a discrete discipline and became part of a typical university curriculum in Europe (especially Paris and Berlin).
Over the past two centuries the quantity of knowledge and the number of tools has exploded. There are strong links between geography and the sciences of geology and botany, as well as economics, sociology and demographics. In the West during the 20th century, the discipline of geography went through four major phases: environmental determinism, regional geography, the quantitative revolution, and critical geography.
Geographic techniques
As spatial interrelationships are key to this synoptic science, maps are a key tool. Classical cartography has been joined by a more modern approach to geographical analysis, computer-based geographic information systems (GIS).
- Cartography studies the representation of the Earth's surface with abstract symbols (map making). Although other subdisciplines of geography rely on maps for presenting their analyses, the actual making of maps is abstract enough to be regarded separately. Cartography has grown from a collection of drafting techniques into an actual science. Cartographers must learn cognitive psychology and ergonomics to understand which symbols convey information about the Earth most effectively, and behavioral psychology to induce the readers of their maps to act on the information. They must learn geodesy and fairly advanced mathematics to understand how the shape of the Earth affects the distortion of map symbols projected onto a flat surface for viewing. It can be said, without much controversy, that cartography is the seed from which the larger field of Geography grew. Most geographers will cite a childhood fascination with maps as an early sign they would end up in the field.
mathematics
- Geographic Information Systems deals with the storage of information about the Earth for automatic retrieval by a computer, in an accurate manner appropriate to the information's purpose. In addition to all of the other subdisciplines of geography, GIS specialists must understand computer science and database systems. GIS has so revolutionized the field of cartography that nearly all mapmaking is now done with the assistance of some form of GIS software.
- Geographic quantitative methods deal with numerical methods peculiar to (or at least most commonly found in) geography. In addition to spatial analyses, you are likely to find things like cluster analysis, discriminant analysis, and non-parametric statistical tests in geographic studies.
- Geographic qualitative methods, or ethnographic research techniques, are used by human geographers. In cultural geography there is a tradition of employing qualitative research techniques also used in anthropology and sociology. Participant Observation and in-depth interviews provide human geographers with qualitative data.
In their study geographers use four interrelated approaches:
- Systematic - Groups geographical knowledge into categories that can be explored globally
- Regional - Examines systematic relationships between categories for a specific region or location on the planet.
- Descriptive - Simply specifies the locations of features and populations.
- Analytical - Asks why we find features and populations in a specific geographic area.
Related fields
Urban and regional planning
Urban planning and regional planning use the science of geography to assist in determining how to develop (or not develop) the land to meet particular criteria, such as safety, beauty, economic opportunities, the preservation of the built or natural heritage, etcetera. The planning of towns, cities and rural areas may be seen as applied geography although it also draws heavily upon the arts, the sciences and lessons of history. Some of the issues facing planning are considered briefly under the headings of rural exodus, urban exodus and Smart Growth.
Regional science
In the 1950s the regional science movement arose, led by Walter Isard to provide a more quantitative and analytical base to geographical questions, in contrast to the more qualitative tendencies of traditional geography programs. Regional Science comprises the body of knowledge in which the spatial dimension plays a fundamental role, such as regional economics, resource management, location theory, urban and regional planning, transport and communication, human geography, population distribution, landscape ecology, and environmental quality.
Reference
See also
- List of geography topics
- Geographical terms
- List of countries
- Geography reference tables
- Map
- Geographical renaming
- Geographic magazines
- National Geographic Society (United States)
- National Geographic Bee (United States)
- Point of Beginning
- Royal Geographical Society (United Kingdom)
External links
- [http://www.confluence.org/ Confluence.org - A work in progress, involving travelling to every point on the globe where the lines of longitude and latitude intersect and taking a photograph in each direction.]
- [http://www.aag.org/ Association of American Geographers]
- [http://www.gisuser.com/ GISuser.com, information-rich portal about GIS]
- [http://www.populationdata.net/ PopulationData.net]
- [http://www.freemaps.de/ Free Maps Germany]
- [http://www.ericdigests.org/1996-4/high.htm Using Literature To Teach Geography in High Schools. ERIC Digest.]
- [http://ericdigests.org/1992-5/geography.htm Teaching Geography at School and Home. ERIC Digest.]
- [http://ericdigests.org/1996-1/geography.htm The National Geography Content Standards. ERIC Digest.]
- [http://www.geo-guide.de Geo-Guide] extensive list of academic resources on geography and earth science
- [http://www.geopium.org Geopium: Geopolitics of Illicit Drugs in Asia]
- [http://www.nationalgeographic.com/ National Geographic Online]
- [http://www.rgs.org Royal Geographical Society]
- [http://www.rcgs.org Royal Canadian Geographical Society]
- [http://www.canadiangeographic.ca Canadian Geographic]
- [http://hypergeo.free.fr Hypergeo : Geographical Encyclopedia]
- [http://www.rare-maps.com/links.cfm Antique and Rare Maps - Art Source International] - Links to rare and antique maps and to cartography resources.
- [http://www.mapinfo.com/ MapInfo GIS Software]
-
Category:School subjects
als:Geografie
ko:지리학
ms:Geografi
ja:地理学
simple:Geography
th:ภูมิศาสตร์
Kategória:BzdochyKategória:Hmyz
Kategória:Kategórie bez interwiki
pisanie prac spielautomaten warsaw hotels spalacze tuszczu online slots
|
|
|
|
