Mathematics Jobs

162 were found based on your criteria {{ paging.total|number:0 }} were found based on your criteria

show all
  • Hourly ({{ jobTypeController.getFacetCount("0")|number:0}})
  • Fixed Price ({{ jobTypeController.getFacetCount("1")|number:0}})
Fixed-Price - Expert ($$$) - Est. Budget: $100 - Posted
My advisor wants me to work on the fracture model with two plates of different properties containing a non-viscous fluid first similar to Korneev et al 2014 So I have this Materials for us that may help Krauklis, P.,V., 1962. About some low frequency oscillations of a liquid layer in elastic medium, Prikladnaya matematika i mekhanika, 26, 1111-1115. (in Russian) So we will derive the general dispersion equation for that and that of Low frequency symmetric mode as in Krauklis wave in trilayer but the mechanical properties of the plates will be different. The plates should be Aluminum and Lucite From the dispersion equation, we will (1)estimate the phase velocity and attenuation (2) Vary the thickness of elastic plates as indicated by Korneev et al 2014 ( Krauklis waves in a trilayer) with repect to phase velocity and attenuation (3) Vary the thickness of the fluid layer ( Keeping that of the elastic layer constant) with respect to the phase velocity and attnuation ( 3) Compare our Phase velocity results with those of Korneev et al 2014 my superimposing his phase velocity solution with our at a particular plate thickness and fluid layer thickness. The second paper summary [8/24/2016 10:47:31 AM] Pavel Uglich: Well. this paper contains all dispersion equations and mechanical parameters. Comparison is possible. The authors compare their results with the previous existing dispersion equations for Krauklus wave Since symmetry is embedded in the solution, we need to satisfy boundary conditions on just one interface. The problem has four unknowns Aj , Bj ( j =1,2) , with four equations at the boundary using two components for both stress and displacement. I obtain the dispersion equation for symmetric modes by finding values of Vf for which the determinant of the system is zero. Using z = h / 2 , we can obtain (after some algebra) the equation [8/24/2016 10:49:22 AM] isa ali: The plots should be in log log scale [8/24/2016 10:50:44 AM] isa ali: the phase velocity , attenuation and frequency scale should be the same. [8/24/2016 10:52:02 AM] Pavel Uglich: Plots in log scale are available in Maple, it' not hard. [8/24/2016 11:15:30 AM] isa ali: Sorry for the delay in my response [8/24/2016 11:16:53 AM] isa ali: So our first task is to verify the exact solution of the dispersion equation and the numerical solutions for phase velocity and attenuation [8/24/2016 11:17:36 AM] isa ali: Use the range of frequency the used in the article I attached earlier [8/24/2016 11:21:57 AM] isa ali: I will also like us to look closely at this article and how the dispersion equation for low frequency symmetric mode was derived for a Thin Elastic Regime Use this model isa ali: and look also at the boundary conditions For symmetry purpose Use some notation like equation 42 and 43 to simplify the dispersion equation That is the dispersion equation they obttained isa ali: He used some notation to simply it so that the determiinant will not have some element like a11, a12..... Well, It's not hard. They use asymptotic expression for tanh to simplify dispersion equations. To find the dispersion curve for all the possible modes of propagation in the Fracture model in the presence of a viscous fluid Then simplify the equation to obtain the dispersion equation of the K-wave or the trapped mode in the fluid layer when the thickness of the two elastic layers are finite Just as in Krauklis wave in trilayer by korneev et at 2014 isa ali: et al. 2014 : Evaluate the phase velocity and attenuation from the dispersion equation : Compare their exact and numerical solutions for both phase velocity and attenuation Compare the results of the phase velocity to that of Korneev et al 2014 , Korneev 2008 and Nikikin et al 2016 at a particular thickness of the elastic layer Compare our attenuation results with those of Korneev et al 2008 and Nikitin et al. 2016 : Get the phase velocity at various plate thicknss like this To see how it will be affected in the presence of a viscous fluid Do same for Attenuation results : At a particular plate thickness , vary the aperture of the fracture or fluid layer just as is done in this Consider similar values on x- and y axis for all plots please) Compare the phase velocity and attenuation of K-waves in the presence various viscous fluid just like we did in the last project at certain plate thickness and at a particular aperture
Skills: Mathematics Physics
Hourly - Intermediate ($$) - Est. Time: More than 6 months, 10-30 hrs/week - Posted
New Vision Learning Services is currently accepting applications for online Science instructor with profound experience to teach highly motivated students. This is a great opportunity for you to supplement your income or to keep your skills fresh by teaching part-time courses online. About us We are an online education provider that offers a thoughtful and comprehensive online solution for students in grades K-12. Our typical student is aged 6-15. Selected instructors will be able to work from home or anywhere you wish as long as you have good internet access, all classes are home based. We offer you A competitive base rate per class. Small classes comprised of 2-4 students aged 6 or older. Each class is comprised of students with similar levels of English ability. Basic cultural competency training focused for an educational setting. Full training on our preferred web conferencing software. Instructor Responsibilities To teach students Science (primary or middle school in English. To evaluate the performance and progress of each student. Prepare lesson plan / courseware (PPT file) for the class. Orient students to their course and conduct instructional sessions. Deliver specific course content in an on-line environment. Provide instructions, support and guidance, manage the learning process and focus on individual needs of the students. Provide course development support/advice to our on-line class. Minimum Qualifications Bachelor or higher degree in Science (physics, chemistry, biology, math) or relevant field. Knowledge about primary and middle school science is an advantage. Active or retired teachers with experience in one or more of the following subjects: physics, chemistry, biology or math. Active teachers must have a current teaching credential. Retired teachers must demonstrate prior experience (past credentials or CV's). Candidates must have excellent PowerPoint development skills. Specifically, candidates will be required to create engaging lesson plans that utilize age appropriate graphics or other multimedia in addition to text in a Power Point presentation. Suitably qualified with a passion for teaching. Proficient in general PC literacy and online web conferencing platforms. High degree of flexibility. Ability to work remotely. Excellent communication skills, both oral and written. Energetic and professional personality. Ability to conduct classes between the hours of 18:00 to 21: 30 Monday-Friday GMT+8, and 8am to 21:30pm on weekend. A class with 2-5 students will be 1 hour in length. Able to interact with students of all levels and develop English as a Second Language curriculum. Always punctual (have class before or on time). Instructor Technical Requirements Instructors must have the following hardware and software requirements: A PC (or Mac ) purchased within the last 4 years with at least 8GB of Ram A 2Mbps > DSL or cable internet connection A wired connection to your internet access (modem, router) device MS Windows Vista or above Most recent version Microsoft Internet Explorer (preferred), or Firefox browser/Most recent version of Adobe Flash player A quality hands free headset with microphone/A high quality webcam resolution of 3MP / 720p Please send Resume in Word or PDF &Cover letter indicating your availability to teach (both days of the week).
Skills: Teaching Mathematics Biology Chemistry English
Fixed-Price - Entry Level ($) - Est. Budget: $100 - Posted
I will give you math tests and I want you to make around 5 minute videos which show you going through each question, showing the watcher (a student) how to do the question. Only Apply If: - You have math background - You have a likeable voice with minimal accent - Ability to create video like Khan Academy (you must have required software) Pay: $5 per video I will ask you to make and submit one video so I can see the quality (I will pay you for it once I hire you). Currently, I want to make about 20 videos. This may lead to long-term work.
Skills: Teaching Mathematics Video editing Video production
Hourly - Entry Level ($) - Est. Time: 3 to 6 months, 10-30 hrs/week - Posted
Mathematics writer needed to either complete or research Math and Engineering problems for research and guidance. ... Research can be online searches but might require some understanding of upper level mathematics.
Skills: Mathematics
Fixed-Price - Intermediate ($$) - Est. Budget: $30 - Posted
I need freelancers to write original and good quality physics questions for college level students. I will more specific instructions about the exam types after hiring the right candidates. You will have to write correct answer and short explanations for that as well. In your bid, please mention your bid per question. I will prefer if you have some past experience in writing questions. This can turn in to a long term work opportunity.
Skills: Mathematics Physics
Fixed-Price - Expert ($$$) - Est. Budget: $50 - Posted
We are seeking an simple algorithm to determine the order in which a borrower (who will apply a series of additional payments) should pay down his loans in order to become debt free as quickly as possible. Project Requirements: Algorithm Article/Discussion of why the algorithm is correct Below is an example problem that we would like help with. Example I have the three loans listed below. The total number of periods I will be in debt (N) is 219.26. I am making payments (p) of $280, $300, and $100 respectively. Loan #1 i = 4% a = $30,000 p = $280 n = 132.77 Loan #2 i = 6% a = $20,000 p = $300 n = 81.30 Loan #3 i = 15% a = $500 p = $100 n = 5.19 I am now making enough money to apply an additional $20 (E) to one of the three loans each month. My goal is to reduce the total number of periods I am in debt as much as possible (without respect to cost). The formula to calculate the total time I am in debt (N) is: N = n1 + n2 + n3 The formula to determine the number of periods remaining on a loan (n) with a constant interest rate and and payment amount is: n = -log(1 - ia/p) / log (1 + i) Question: Looking exclusively at the interest rates (i), principal balances (a), payment amounts (p) of my three loans, is there a simple way to formula that I can use to rank my loans in order of priority to minimize N by appling a series of constant extra payments (E)? Assuming the following: I want to apply my additional $20 (E) to my loans in the order that will minimize the total time I am in debt (N), without respect to cost, even if it means paying more money in total. Once I have one loan paid off I will apply the extra $20 (E) to the next loan, and so on. I do not need to know how much time will be saved by applying any extra funds to my loans, only the order in which I should apply the extra money (E) to my loans?
Skills: Mathematics
Fixed-Price - Expert ($$$) - Est. Budget: $800 - Posted
Hello first part i want to debug my script(PHP , JS) on iphone browser and making poker odds calculator and deal with other script through API second part is to use PHP with my poker API to make affiliate system- Rake calculation-prepaid card system website and payment integration and other features contact me for more detail
Skills: Mathematics Algorithms HTML JavaScript
Fixed-Price - Intermediate ($$) - Est. Budget: $94 - Posted
I am looking to create Math reference books for the SAT and GMAT. For example, I am looking to create a reference book on how to tackle the Algebra and Advance Algebra component of the GMAT or SAT. These books will be used by students as reference only and not as teaching material. For reference, please see the Manhattan Reading Comprehension book I want the following reference books created: 1. Arithmetic and Number Operations 2. Miscellaneous Topics - Data Interpretation, Probability, Functions
Skills: Mathematics Copywriting Teaching Mathematics