Several broad disciplines including Psychology, Human Factors and Cognitive Science subsume usability engineering, but the theoretical foundations of the field come from more specific domains: human perception and action ; human cognition ; behavioral research methodologies ; and, to a lesser extent, quantitative and statistical analysis techniques.

Factors influencing a crystal's habit include: a combination of two or more crystal forms ; trace impurities present during growth ; crystal twinning and growth conditions ( i. e., heat, pressure, space ); and specific growth tendencies like growth striations.

Factors investigated have included occupation ( i. e. exposure to chemicals in specific industries ), smoking, alcohol consumption, use of medicinal drugs during pregnancy and birth factors ; however, results have been inconclusive.

Factors governing organic reactions are essentially the same as that of any chemical reaction.

Factors which affect the quality are levels of ammonia, levels of dissolved oxygen and the Biochemical oxygen demand ( BOD ), which measures the amount of dissolved oxygen needed by organisms to break down organic matter in the water.

Factors in the soil, such as its texture, its ability to retain water, and the amount of organic matter contained in it, also affect the amount of pesticide that will leave the area.

Factors involved in the displacement formula are the bore diameter of the engine's cylinders, the length of the piston stroke, the number of cylinders in the engine, and a constant.

`` Factors in the cost of treatment are the length of time involved and the skill and education of the practitioner '', says Dr. Brodie.

Factors are

Factors of production ( or productive ' inputs ' or ' resources ') are any commodities or services used to produce goods and services.

' Factors of production ' may also refer specifically to the ' primary factors ', which are stocks including land, labor ( the ability to work ), and capital goods applied to production.

Factors that are known to cause variation in the levels of GH and IGF-1 in the circulation include an individuals genetic make-up, the time of day, their age, sex, exercise status, stress levels, genetics, nutrition level and body mass index ( BMI ), disease state, race, estrogen status and xenobiotic intake.

Factors that add to risk of heart disease include obesity and smoking, both of which are more prevalent in lesbians.

Factors which affect reproductive success are also important, an issue which Charles Darwin developed in his ideas on sexual selection.

Factors that affect reproductive success are also important, an issue that Charles Darwin developed in his ideas on sexual selection, for example.

Factors that can cause nitrate buildup in plants are frost, hail damage, drought, hot dry winds, pesticide damage, herbicide damage and any other plant stunting environmental causes.

Factors other than the potential causative variable of interest are controlled for by including them as regressors in addition to the regressor representing the variable of interest.

Factors of production are defined by Karl Marx in Das Kapital as labour, subjects of labour, and instruments of labour ; i. e., the term is equivalent to means of production plus labour.

Factors that can shape climate are called climate forcings or " forcing mechanisms ".

Factors which affect the quality of friction ridge impressions are numerous.

Factors shape this habitat are primarily bushfires, low phosphorus / nitrogen levels, intense summer heat and low water levels.

Factors including one's speed made good and the nature of heading and other course changes, and the navigator's judgment determine when dead reckoning positions are calculated.

Factors may be invariant if they are absent and don't exist in the population ( e. g. no one has access to a particular antibiotic ), or because they are omni-present ( e. g. if everyone is drinking coffee ).

Factors that can cause male as well as female infertility are:

If default models are biased to include arbitrary default data and " Ratings Factors are biased low compared to the true level of expected defaults, the Moody ’ s will not generate an appropriate level of average defaults in its default distribution process.

Factors in the assessment of wounds are:

Factors that acutely affect leptin levels are also factors that influence other markers of inflammation, e. g., testosterone, sleep, emotional stress, caloric restriction, and body fat levels.

The Institute of Ergonomics and Human Factors ( IEHF-formerly The Ergonomics Society ) is the UK-based professional society for ergonomists, human factors specialist and those involved in user-centred design.

Factors involved in lighting design are essentially the same as those discussed above in energy conservation analysis.

Factors such as lower literacy and education levels among Indian Muslims as compared to Indian Hindus, longstanding cultural differences, and outbreaks of religious violence such as those occurring during the 2002 Gujarat riots in India are cited.

Factors that may determine what line an angler chooses for a given fishing environment include breaking strength, knot strength, UV resistance, castability, limpness, stretch, abrasion resistance, and visibility.

Factors such as: energy and type of radiation, half-life, longevity, availability, shielding, portability, and the role of the environment will determine the effect of the radiological weapon.

Factors that determine the costs for desalination include capacity and type of facility, location, feed water, labor, energy, financing, and concentrate disposal.

Some of the Factors that can determine admissibility include:

Factors such as temperature, humidity, and the season of death all determine how fast a fresh body will skeletonize or mummify.

** Court employs 4 " Fairness Factors " from Parklane Hosiery Co., Inc. v. Shore, 439 U. S. 322 ( 1979 ), to determine validity of the Offensive Non-Mutual Collateral Estoppel:

Factors that determine which mothers are more likely to have a closely spaced repeat birth include marriage and education: the likelihood decreases with the level of education of the young woman – or her parents – and increases if she gets married.

Reduction Factors are applied to determine the various factored resistances of the section.

Factors such as age or genetic differences between individuals, the level of virulence of the individual strain of virus, as well as exogenous influences such as co-infection with other microbes may determine the rate and severity of HIV disease expression.

Factors that determine the surge heights for landfalling tropical cyclones include the speed, intensity, size of the radius of maximum winds ( RMW ), radius of the wind fields, angle of the track relative to the coastline, the physical characteristics of the coastline and the bathymetry of the water offshore.

Factors such as the range length and expected strength of the wind determine the best type of flag to use.

The Graham Factors, shown below, are used by courts to determine if the claimed invention is nonobvious.

The model assesses the individual's relative independence and potential for independence in ALs ,( considering their lifespan, development, and the five key factors ( see Factors below )) on a continuum ranging from complete dependence to complete independence in order to determine what interventions will lead to increased independence as well as what ongoing support is or will be required to compensate for dependency.

Factors that determine which member of the household has the most power in decision-making vary across cultures, but in most countries there is extreme gender inequality.