Analysis is the process of breaking a complex topic or substance into smaller parts in order to gain a better understanding of it. The technique has been applied in the study of mathematics and logic since before Aristotle (384–322 B.C.), though analysis as a formal concept is a relatively recent development.The word comes from the Ancient Greek ἀνάλυσις (analysis, "a breaking-up" or "an untying;" from ana- "up, throughout" and lysis "a loosening"). From it also comes the word's plural, analyses.
As a formal concept, the method has variously been ascribed to Alhazen, René Descartes (Discourse on the Method), and Galileo Galilei. It has also been ascribed to Isaac Newton, in the form of a practical method of physical discovery (which he did not name).
Hi All,
I am doing some FA on SPSS. I entered 9 columns from an Excel file into
SPSS. I am just not sure of how the order of the initial columns corresponds to the order
of the components that have been extracted; specifically, in the "total Variance Explained" section of the outputs. Would...
Hi, I'm trying to figure out the forces Fx in the drawing I have uploaded. If I have a vertical force Fy acting on the bracket I have drawn. I know from experience that this force is going to pull my bracket horizontally but I can't figure out how I work out a horizontal force from a vertical...
This is the problem I'm currently working on:
The pi groups I identified were h1, h2, d, D, g, t, and velocity, but when I looked at the solution, it selected Δh, D, t, ρ, d, ϒ, h1, with no explanation why those variables are needed. If I was solving with the Bernoulli equation, I wouldn't...
1. The problem statement:
Let ##f:[a, b] \rightarrow \mathbb{R}##. Prove that if ##f## is continuous, then ##f## is bounded.
2. Relevant Information
This is the previous exercise.
I have already proved this result, and the book states to use it to prove the next exercise. It also hints to use...
Hi All,
I am trying to wrap my brain around Latent Class Analysis (LCA). In the mean time, does anyone know how to test for goodness of fit and whether a given number of classes is somehow optimal? AFAIK, Log-Likelihood should decrease as a measure of improved fit when adding latent classes...
Hi. Can someone point me to a good (and really basic) PDF file or text regarding Finite Element analysis? I would prefer it having an example where it would solve the 1D heat equation or the Laplace equation so I can extend what I know from finite difference methods to it.
Sorry if this seems...
I'm looking for a good Complex book, but the options seem slim. I was thinking about Rudin's Real and Complex. My only reservation is that it is not structured like any other book I've seen. I've had advanced analysis and measure and integration theory, so rigour is not a concern. I saw Alfohr's...
Hi,
In next semester, I am going to take vector calculus. Here is the course description: Vector fields, line and surface integrals, Green's Theorem, Stokes' Theorem, Divergence Theorem and advanced topics such as differential forms or applications to mechanics, fluid mechanics, or...
Hi All,
I need to do some work on Factor Analysis on Non-Continuous variables. I have searched the web, but found nothing of much substance. I would appreciate references on helpful sources on it. Thanks.
I am studying the modal analysis of a mechanism and I am only interested in the transverse modes, I wonder if there is a way to formulate my problem so that the results show only the transverse modes without the torsional and longitudinal ones, this would help in the post-processing a lot.
I am stuck on the questions, 5.3.10 and 5.3.11 which are part of a chapter on dimensional analysis in fluid mechanics by Streeter.
Question 5.3.10 (see also the attachment):
It asks me for the given fluid dynamic problems, where is the inertial force not important. It lists several fluid...
Hello all. I'm a mathematics undergrad student who finished his first university year succesfully. I got courses of calculus, but these weren't very rigorous. I did learn about stuff like epsilon and delta proofs but we never made exercises on those things. The theory I saw contained proofs but...
Homework Statement
Question:
For ##\Lambda^3+\Lambda^2+A=0## , show that for ##A<0## there is some real positive ##\Lambda## which solves this
Homework EquationsThe Attempt at a Solution
[/B]
Attempt:
Write ##-A=\hat{A} ##, then ##\hat{A} \in (0,\infty)##
and...
Homework Statement
The internal and external diameter of a hollow cylinder are measured with the help of a vernier calipers. Their values are (3.87 ± 0.01) cm and (4.23 ± 0.01) cm respectively. The thickness of the wall of the cylinder is ?Homework Equations
Thickness of cylinder wall= 1/2...
I am doing FE analysis for symmetric shape in boundary conditions and geometry, I would like to know if I can use symmetry in my analysis or not. I have tried to run trials, the results are very similar but I am not sure if this just a coincident
Hey everyone! (new to the forum)
I am currently trying to self study more advanced mathematics. I have taken up to multivariable calculus and have taken a class for an introduction to mathematical proofs/logic (sets, relations, functions, cardinality). I want to get a head start on the...
https://www.amazon.com/dp/1305253663/?tag=pfamazon01-20
Are all these called root finding algorithms? All of it ?
<Moderator note: Link changed because of undetermined copyright situation. fresh_42>
Homework Statement
Homework EquationsThe Attempt at a Solution
For ##0 \ge \theta \ge \pi/2##
Forces on the ring,
##Mg + 2N\cos \theta = F\qquad 1##
Forces on the beads ##mv^2/R = - N + mg \cos \theta##
By conservation of energy when the bead has fallen through some angle ##\theta##...
I don't understand the motion of an accelerating wedge and a block. I'd really appreciate if you make me understand the motion in both an inertial and a non inertial reference frame.
Here's a figure I have made, a0 is the acceleration on the wedge with respect to an inertial frame, towards right.
Dear guys
can somebody explain, what is actually the following terms, used in fatigue analysis:
1. Mean stress correction factor
2. Plate thickness correction factor
3. Redundancy factor
Thanks guys. you are the best...
A refrigerator operates on a Carnot cycle. In this cycles, it absorbs 120 J of energy at a temperature Tc while 300 J of work is done on the gas undergoing the cycle.
How much energy is exhausted as heat during this process?
The answer is 420 J.
I am unsure of where to start for this...
Hello! Can someone explain to me, in real analysis, what is the difference in expanding a function as a Taylor series around 2 different point. So we have ##f(x)=\sum c_k (z-z_1)^k = \sum d_k (z-z_2)^k## and as ##k \to \infty## the series equals f in both cases, but why would one choose a point...
< Mentor Note -- thread moved to HH from the technical physics forums, so no HH Template is shown >
Hi,
I couldn't figure out from the equation that relate the current source IS to IA and IB. If both IA and IB is coming from the same direction and the positive terminal has been predicted...
This is more of a concept question; if I choose different repeating parameters to someone else, say my lecturer, and got different pi groups to him/her, however my groups are still dimensionless (i.e. the units for each pi group cancel to 1), is my answer still correct?
I know that mie theory is used to analyze the absorption/scattering/extinction of a homogeneous sphere within a homogeneous dielectric medium. However, if I wanted to perform the same analysis on a sphere enclosed by two different media, is there an analytic solution to this?
Hi,
I want a book about power system analysis that I can have laying around and read from time to time. I have taken a course in power system analysis some time ago, where I was taught simple fault analysis including unbalanced faults, frequency and voltage control.
So to maintain this...
I have to do a teaching assistant job on a multivariable calculus class, I have to survey books that can be useful as resources. Has anyone used this book by Bourne and Kendall? I noticed that the treatment of vector analysis seems good and the chapter on Cartesian tensors seem to be a good...
I analyzed uncertainty analysis of 2 port measurement. I referenced 2 book
"Transmission Reflection and Short Circuit Line Methods for Measuring Permittivity and Permeability"
at pages 31 equation(2.83)
"Transmission and Reflection and SCL Permittivity Measurements" at pages 44 equation(2.67)...
Hello! I see that all theorems in complex analysis are talking about a function in a region of the complex plane. A region is defined as an open, connected set. If I am not wrong, the real line, based on this definition, is a region. I am a bit confused why there are so many properties of the...
Hello! I have this Proposition: "A harmonic function is infinitely differentiable". The book gives a proof that uses this theorem: "Suppose u is harmonic on a simply-connected region G. Then there exists a harmonic function v in G such that ##f = u + iv## is holomorphic in G. ". In the proof...
Homework Statement
There is a paper in 1973:
T. Kushida, "Energy Transfer and Cooperative Optical Transitions in Rare-Earth Doped Inorganic Materials I. Transition Probability Calculation", J. Phys. Soc. Jpn. 1973, 34, 1318-1326. DOI: http://dx.doi.org/10.1143/JPSJ.34.1318
that explains the...
Homework Statement
Suppose f is entire and there exist constants a and b such that ##|f(z)| \le a|z|+b## for all ##z \in C##. Prove that f is a polynomial of degree at most 1.
Homework EquationsThe Attempt at a Solution
We have that for any ##z \neq 0##, ##\frac{|f(z)|}{a|z|} \le b##. So if we...
I'm reading a book on vortex methods and I came across the above mentioned terms, however, I don't understand what they mean in mathematical terms. The book seems to be quite valuable with its content and therefore I would like to understand what the author is trying to say using the above...
Hello,
I hope this is the appropriate section to post this question:
I conducted a study in which participants were to do one of three treatment options and then write a test. The intention was to separate the participants based on the option they selected and using a one-way ANOVA, analyze...
Hello,I am a mechanical engineering student that loves mathematics and fluid mechanics. My school offers three different analysis courses and I’m not sure which to take. I took honors Fundamental of Mathematics, where we covered Abstract Linear Algebra, Set theory (along with rings and fields)...
Hello i have a cyclinder that i want to apply pressure to. The pressure starts from a higher value and then drops as time progresses. Can someone tell me how to apply pressure based on time in ansys workbench?
Homework Statement
I am tasked with solving and creating a dimensionless equation from a differential equation given.
Homework Equations
This is the given equation:
The Attempt at a Solution
When doing the dimensional analysis I see that we are left with units of [m-3][kg1][s-2].
These...
Hi all,
I'm currently working on my bachelor's thesis in mechanical engineering. I must simulate a brake model, which consist of 1 rotor and 1 stator. The rotor rotate around z-axis and the stator move along z-axis. When pressure is on stator placed. The stator and rotor will be pressed...
Homework Statement
Let f_n: [0,1]-->R be a uniformly convergent sequence of continuous functions. Let f: [0,1]-->R be the uniform limit of {f_n}. Let c be an element of R. Suppose that for all n there is some x_n in [0,1] such that f_n(x_n)=c. Prove that there exists an x in [0,1] such that...
Homework Statement
Compute the Integral: ##\int_{-\infty}^\infty \space \frac{e^{-2ix}}{x^2+4}dx##
Homework Equations
##\int_C \space f(z) = 2\pi i \sum \space res \space f(z)##
The Attempt at a Solution
At first I tried doing this using a bounded integral but couldn't seem to get the right...
Homework Statement
The Attempt at a Solution
At this point, usually I would replace the values and sometimes separate into partial fractions, and then take the inverse Laplace transformation. So I know that the inverse Laplace needs to give me 6+12e^-2t.
I am given the answers in my...
Homework Statement
The Attempt at a Solution
As you can see, the answer is given in the problem. I have the 0.8t par right but somewhere along the way I messed up. I'm not really to sure about how to solve these types of problems using Laplace. Is there a general procedure that I should be...
Homework Statement
Homework Equations
The Attempt at a Solution
All loops are clockwise;
KVL Loop around 1V, 120kOhm and VBE (I1 is assigned to the loop):
-1V + 120kOhm * I1 + VBE = 0
I1 = IB = 0.3V / 120kOhm = 2.5 * 10-6 A;
Loop around 10kOhm, vCE (I2 is assigned to the loop);
KVL...