2. How would you create classic interface of your own? Pretend that you are an interface developer during the arcade era. Working within the limitations of the time, what type of game would you develop?and what would the interface look like?

3. How would you update a classic interface? Play a classic arcade, console, computer or handheld game. After familiarizing yourself with the interface, make a rough sketch of the interface. Then create updated version, incorporating elements that are commonly used in interfaces today.

4. What is your favorite classic game system, and why? What aspects of the hardware and software interface elements are appealing to you? What are some favorite games that you enjoyed playing on the system, and why?

5. How can interface limitations enhance the playing experience? Choose a current game with a rich or complicated interface. Begin to limit the interface in some way?by taking away certain components or restricting player movement, for example. Create new, simplified interface for the game. What changes would you have to make to the game itself in order to accommodate this new interface design?

1. This standard defines a structure of low altitude airspace for efficient Unmanned Aerial Vehicle (UAV) traffic management. The standard elaborates the structural low altitude based on UAV low altitude public air routes from five parts: grid technology, remote sensing data, communication and networking, route planning, operation and management. Gridding and coding techniques (Section 4.1) are the basic techniques for constructing structured low altitude; Remote sensing (Section 4.2) and surface object extraction technology are important sources of surface geographic information for low-altitude structural construction, which can meet the demand of high dynamic updating of information; Communication and networking technology (Section 4.3) can provide high-quality and reliable communication and data link for low-altitude UAV operations; The low altitude air route (Section 4.4) is a kind of fine low altitude airspace structure; Operation and management techniques (Section 4.5) provide macro policy support for the docking between the route and UTM. In addition, three annexes (A/B/C) are attached to show the details of low-altitude structure. The method proposed above comprehensively utilizes interdisciplinary technologies such as RS, geographic information system (GIS), aviation and transportation for efficient UAV operations in low altitude. This standard was supported and funded by the National Key Research and Development Program of China (No. 2017YFB0503005), the National Natural Science Foundation of China (Nos. 41771388, 41971359), and the Strategic Priority Research Program of Chinese Academy of Sciences (No. XDA19050501).

2. The technical specifications for, and testing of, the interconnection and interoperability between utility electric power systems (EPSs) and distributed energy resources (DERs) are the focus of this standard. It provides requirements relevant to the performance, operation, testing, safety considerations, and maintenance of the interconnection. It also includes general requirements, response to abnormal conditions, power quality, islanding, and test specifications and requirements for design, production, installation evaluation, commissioning, and periodic tests. The stated requirements are universally needed for interconnection of DER, including synchronous machines, induction machines, or power inverters/converters and will be sufficient for most installations. The criteria and requirements are applicable to all DER technologies interconnected to EPSs at typical primary and/or secondary distribution voltages.Installation of DER on radial primary and secondary distribution systems is the main emphasis of this document, although installation of DERs on primary and secondary network distribution systems is considered. This standard is written considering that the DER is a 60 Hz source.

3. This standard specifies the air interface, including the medium access control layer (MAC) and physical layer (PHY), of combined fixed and mobile point-to-multipoint broadband wireless access (BWA) systems providing multiple services. The MAC is structured to support the WirelessMAN-SC, WirelessMAN-OFDM, and WirelessMAN-OFDMA PHY specifications, each suited to a particular operational environment. The standard enables rapid worldwide deployment of innovative, cost-effective, and interoperable multi-vendor broadband wireless access products, facilitates competition in broadband access by providing alternatives to wireline broadband access, encourages consistent worldwide spectrum allocation, and accelerates the commercialization of broadband wireless access systems.

8. Solve the equation AT = 6 by using the LU factorization given for A. [2 pts] 2 6 A = -6 6 = 19 5 9. Matrix algebra. Mark each statement True or False. [4 pts] In general, if BC = BD then C = D. If A is row equivalent to the identity matrix then A is invertible. If A and B are n x n matrices then (A + B)(A - B) = 43 - B3. If AB = BA and A is invertible, then A-1B = BA-1.5. [10 points] Solve the system Ax = b for b = biz 2 using the following steps: (a) (3 points). Compute factorization A = LU. (b) (3 points). Solve Ly = b by forward substitution (c) (3 points). Solve Ux = y by backward substitution. (d) (1 point). What is the solution of Ax = b?Question 2 Solve the following linear system of equations. [2 points] x, +3x2 -X3 + 2x4 + 3x5 = 5 X1+2x2 -X3 + 4x4 + 9x5 = -3 3x1-5x2+3x3 + 2X4 - X5 = 7 2x2+ X3 + 2x5 = -3 X1 -X2 + 2x5 = 1 Using -LU Factorization. -Cramer's rule. Attach File Browse My Computer Browse Content Collection4 Written Problems (40 points) 1. Use LU factorization only to solve: 201 + 212 + 313 + 4x4 = 8 2x1 + 4x2 + 923 + 16.x4 =6 4x1 + 8.12 + 243 + 634 = -26 6x1 + 1612 + 51x3 + 10034 =6 Using other approaches will result in partial credits only. Show all steps. 2 2. Let A = 5 Find the elementary matrices E1, E2, Es such that 11 EsE, EA = U. Then, using only the elementary matrices you found, calculate L. Do not compute L based on your reduction from A to U. Note that L and U here refer to the LU factorization of A. Show all steps