Online TA Profiles
Xia Wang, PhD
OTA ID#: 104455
| Education Experience: |
BSc, Computational Mathematics & Applied Software, Jilin University, 1999 MA, Computational Mathematics, Shanghai Jiao Ting University, 2002 PhD, Applied Mathematics, University of Maryland, College Park, 2008 |
|---|---|
| Focus of Study: | Heuristics in operations research. |
| Work Experience: | University of Maryland, College Park
2002-Present Teaching Assistant, Lecturer of Math Undergraduate Courses |
| Skills & Achievements: | Math, Statistics, and Operations research. |
| Career Interests: | I'm working in Genetic Algorithms. |
| Outside Interests: | Statistics. |
| Message to Students and/or Parents: |
By practice, we'll make progress everyday. |
| Postings Answered: | 734 |
| Cumulative OTA Rating: | 4.8/5 What is OTA Rating? |
- Q 12 - The management of White Industries is considering a new method of assembling its golf cart... - The management of White Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on the average, to assemble a cart. The mean assembly time for a ...
- QUANTATIVE METHODS - 1. In a linear programming problem, a valid objective function can be represented as a. Max Z = 5xy b. Max Z 5x2 + 2y2 c. Max 3x + 3y + 1/3z d. Min (x1 + x2) / x3 2. A plant manager is attemp ...
- Quantitative Methods Linear/Integer Programming Study Questions - _______ 1. Linear programming models have decision variables for measuring the level of activity. _______ 2. In a transportation problem, a demand constraint for a specific destination represents ...
- According to an IRS study, it takes an average of 330 minutes for taxpayers... - 18. According to an IRS study, it takes an average of 330 minutes for taxpayers to prepare, copy, and electronically file a 1040 tax form. A consumer watchdog agency selects a random sample of 40 taxp ...
- Statistics - Tourism is one consideration for CoffeeTime's future, A survey of 1,233 visitors to Mumbai last year revealed that 110 visited a small cafe during their visit. Laura claims that 10% of tourists will i ...
- Inequality - 1. Why does the inequality sign change when both sides are multiplied or divided by a negative number? Does this happen with equations? Why or why not? Write an inequality to be solved with the answe ...
- Using the index of a sequence as the domain and the value of the sequence as the range, is a sequence a function? - Using the index of a sequence as the domain and the value of the sequence as the range, is a sequence a function? *Include the following in your answer: Which one of the basic function(linear, q ...
- Dr. Patton is a Professor of English.... - Dr. Patton is a Professor of English. Recently he counted the number of misspelled words in a group of student essays. For his class of 40 students, the mean number of misspelled words was 6.05 and th ...
- Exponential and Logarithmic Functions : Real-Life Applications - 1. Explain the relevance and application of exponential functions in real-life situations. 2. Explain the relevance and application of logarithmic functions in real-life situations. 3. Think o ...
- Coefficients of Quadratic Equations - Write three quadratic equations, with a, b, and c (coefficients of x2, x, and the constant) as: 1. Integers 2. Rational numbers 3. Irrational numbers
- Modeling Problem: Two Decision Variables (Linear Programming / Optimal Solution) - A manufacturer of excercise equipment will begin production of two types of machines: Body Plus 100 and Body Plus 200. The Body Plus 100 consists of a frame unit, a press station, and a pec-dec sta ...
- Quantitative Methods - Explain the connection between reduced costs and the range of optimality, and between dual prices and the range of feasibility.
- Linear Programming : Finding Constraints - Please formulate the constraints for this problem as well as solutions to parts c and d. --- Round Tree Manor is a hotel that has two types of rooms with three rental classes: Super Saver, Deluxe, ...
- Transportation, Transshipment, and Assignment Problem - I need help trying to find the answer. I have tried about 20 different constraints and all of them are wrong. I don't know what I am doing wrong. Some of the constraints that I have tried are x4 + ...
- Quantitative Stats - The production manager for the Whoppy soft drink company is considering the production of 2 kinds of soft drinks: regular and diet. The company operates one "8 hour" shift per day. Therefore, the prod ...
- Quantitative Methods - Homework problems. File is attached. --- True/False Indicate whether the sentence or statement is true or false. ______ 1. A linear programming model consists of decision variables, constr ...
- Linear Programming : Maximizing Subject to Constraints - 1. Consider the following integer linear programming problem. Max Z = 3x1 + 2x2 Subject to: 3x1 + 5x2 <= 30 4x1 + 2x2 <= 28 x1 <= 8 x1, x2 >= 0 and integer The solution to the linear program ...
- T3-22 - An on the job injury occurs once every 10 days on average, at an auto plant. WHat is the probability that the next on the job injury will occur within 10 days? A. .9513 B. .8647 C. .6500 D. .63 ...
- Statistical questions - 1. Can the formal hypothesis testing approach be used for non parametric tests? a) How are parametric and nonparametric statistics different? b) How are parametric and nonparametric statistics sim ...
- Network Model Transportation Problem : Supply Capacity and Demand Satisfaction - Canning Transport is to move goods from three factories to three distribution centers. Information about the move is given below. Give the network model and the linear programming model for this probl ...
