Look at the problem from two aspects.
Dimension, also called dimension, is the number of independent parameters in mathematics. In physics and philosophy, the number of independent space-time coordinates. Dimension 0 is a point and has no length. 1 dimension is a straight line with only length. 2D is a plane, which is the area formed by length and width (or curve). Three dimensions are two dimensions plus height to form a volume surface. Four dimensions are divided into four dimensions in time and space, and people often mention the concept of time. /kloc-in the 9th century, mathematicians discovered fractal, thus creating a new dimension-"fractal dimension", from which people realized that dimension is not only an integer, but also a fraction or even an irrational number. Professor Stephen Hawking, a famous British physicist, has this explanation: it is like a hair, which is a one-dimensional line from a distance. Under the magnifying glass, it is really three-dimensional; If we face time and space, if we have a magnifying glass with high magnification, we should also be able to reveal other possible 4-and 5-dimensional spaces, up to 1 1 dimensional space. Although ordinary people are used to integer dimensions, the dimensions in fractal are not necessarily integers, but may be integer rational numbers or irrational numbers.
What do the two dimensions of human life cycle mean?
The life cycle hypothesis, also known as the life cycle hypothesis of consumption and savings, was put forward by American economists F franco modigliani, R brumberg and A Anton. The difference between this theory and Keynes's consumption function theory is that Keynes's consumption function theory emphasizes the correlation between current consumption expenditure and current income, while the life cycle hypothesis is stronger.
How many dimensions does a * * * have? What does each dimension mean?
Dimension, also called dimension, is the number of independent parameters in mathematics. In physics and philosophy, the number of independent space-time coordinates. Dimension 0 is a point and has no length. 1 dimension is a straight line with only length. 2D is a plane, which is the area formed by length and width (or curve). Three dimensions are two dimensions plus height to form a volume surface. Four dimensions are divided into four dimensions in time and space, and people often mention the concept of time. (There are just two kinds of four dimensions. 1. Four-dimensional space-time refers to three-dimensional space plus one-dimensional time. 2. Four-dimensional space only refers to four-dimensional space. ) Four-dimensional motion produces five dimensions.
The sixth dimension refers to thought, which is independent of time and space in common sense. The sixth dimension is similar to time in nature, which goes beyond the physical category but is higher than time. The universe we live in cannot go beyond the sixth dimension, but can only run in it. Just like a computer program, although the execution result of the program may have an impact on time and space, the program itself can only run in the computer.
The common understanding is that "a point is 0-dimensional, a straight line is 1 dimensional, a plane is 2-dimensional, and an object is 3-dimensional". In fact, the concept mentioned in this statement is "premise" rather than "described object", and all described objects are "points". Therefore, its complete expression should be "the point based on point is 0 dimension, the point based on line is 1 dimension, the point based on plane is 2 dimension, and the point based on volume is 3 dimension". Further explanation, the point on the description (positioning) point is the point itself, and no parameters are needed; Describing (locating) a point on a straight line requires 1 parameters (coordinate values); Describing (locating) a point on a plane requires two parameters (coordinate values); Describing (locating) a point on a volume requires three parameters (coordinate values).
If you change the "object", you will get different conclusions, such as: "A straight line is 4-dimensional based on a plane, 6-dimensional based on a straight line, and 9-dimensional based on a plane". Further explanation, two points can determine a straight line, so describing (locating) a straight line requires 2×2 parameters (coordinate values) on the plane and 2×3 parameters (coordinate values) on the body; A plane can be determined by three points on a straight line, so 3×3 parameters (coordinate values) are needed to describe (locate) a plane on an object.
From the perspective of human life cycle, it can be divided into two dimensions. What are they?
time and space
What are the two dimensions of "scientific methodology"
Scientific methodology can be divided into broad sense and narrow sense. In a narrow sense, it only refers to the methodology of natural science, that is, the general methods in natural science such as research observation, experiment and mathematics. Broadly speaking, it refers to all correct methodologies, that is, scientific methodology. With the development of natural science in the 20th century, many new methods appeared, such as cybernetics, information and system methods, which promoted the development of methodology research.
Scientific methodology is increasingly showing its role in establishing new research directions, exploring new growth points of various departments, and prompting the basic principles and forms of scientific thinking. Materialist dialectics is a correct philosophical method summed up from human practice and a universal methodology of scientific research. It plays a guiding role in the general research methods of natural science and will develop with the development of scientific practice.
How many dimensions does a * * * have? What does each dimension mean?
According to the theory of relativity, a * * * has eleven dimensions. This is defined by relativity. If anyone can solve "why there are only eleven spatial dimensions", who will win the Nobel Prize in Physics? ...........................................................................................................................................
How to analyze the correlation between two dimensions with spss
You can grade several variables of the status quo with the same motivation.
Then you can divide the score into high, medium and low grades according to the sea area, and then calculate the ranking correlation, using spearman method.
If you don't divide the grades, you can directly use the scores to examine normality first, and then use Pearson correlation.
Of course, it is also good to use principal component analysis or factor analysis to reduce the dimension first.
What does the specific dimension of the questionnaire mean? Better give me an example. I would appreciate it.
For example, suppose the AB personality questionnaire has 20 questions, which are divided into two dimensions: A personality and B personality. That is to say, this questionnaire can measure whether a person is type A or type B, in which type A personality includes 8 questions and type B personality includes 12 questions, and then the scores of the two dimensions are the sum or average of the scores of the topics included respectively, which is the dimension score. We can know how much a person's type A personality is, whether it is high or low. (Analysis of questionnaire data handled by Nanxin. com)
What does it mean to know the ordinal number of two dimensions?
What does it mean to know the ordinal number of two dimensions?
Is your question misspelled or unclear?
Would you please describe the question clearly before you ask it?
Friends can answer your questions.
What does dimension mean? What is the difference between it and the influencing factors?
The concept of dimension is relatively large, which is somewhat similar to region and division.
Take each research direction as an example. Research, collect and sort out information about the pre-Qin period.
The optional dimensions include cultural dimensions, such as pre-Qin politics, economy and military culture.
The dimensions that can also be selected are the dimensions of people, events and things, such as celebrities, events and things in the pre-Qin period.
Both dimensions can be collected and studied.
But the influencing factors are relatively small. Taking the above as an example, the influencing factors related to the pre-Qin period are more specific.
Personal understanding of a dimension is more inclined to the world outlook, while the influencing factors are more inclined to methodology.