New pickup designs for a Bunch Arrival time Monitor (BAM) at the Free Electron Laser in Hamburg (FLASH) have been developed and simulated [1, 2] with CST PARTICLE STUDIO R ©. With regard to the signal characteristics and manufacturability a cone-shaped pickup was selected as a prospective candidate. At high frequencies, small manufacturing tolerances might have great influence on the pickup sig...

In this paper, we propose a new method for reducing assembly time in printed circuit board (PCB) assembly by prioritizing efficient simultaneous pickup operation of placement machines. There are three major problems of the scheduling: (1) component feeder location (affects efficiency of pickup operation), (2) mounting sequencing (affects total distance of the mounting tour) , and (3) simultaneo...

This paper studies the double traveling salesman problem with two stacks. A number of requests have to be served where each request consists in the pickup and delivery of an item. All the pickup operations have to be performed before any delivery can take place. A single vehicle is available that starts from a depot, performs all the pickup operations and returns to the depot. Then, it performs...

A novel monolithic free-space optical disk pickup head has been fabricated by micromachined micro-optical bench technology. The pickup head contains a self-aligned semiconductor edge-emitting laser, a collimating lens, a beam splitter, two focusing lenses, and two 45 degrees mirrors. All optical components are built monolithically on Si substrates. The 45 degrees mirror directs the optical outp...

Abstract Ions that are reflected at the shock front and escape back into upstream region can play role of ions start to be accelerated by a diffusive acceleration mechanism. Backstreaming have been shown generated from superthermal tail solar wind sufficiently high temperatures. The number such was found low they were not angles exceeding 50°. mechanism production is multiple reflection when an...

the problem of designing a set of routes with minimum cost to serve a collection of customers with a fleet of vehicles is a fundamental challenge when the number of customers to be dropped or picked up is not known during the planning horizon. the purpose of this paper is to develop a vehicle routing problem (vrp) model that addresses stochastic simultaneous pickup and delivery in the urban pub...

The Pickup and Delivery Problem (PDP) consists in defining a set of routes that satisfy transportation requests between a pickup point and a delivery point. This paper addresses a variant of the PDP where the requests are transportation demands arising from disabled persons. Vehicle passengers can change of vehicle during their trip on specific locations called “transfer points”. Solving this v...

A single-string instrument (monochord) was carefully designed and constructed to test a new prototype of a two-dimensional magnetic pickup. The objective of the research was to design the new transducer which would depict a more meaningful signal analogous to the two-dimensional vibration of the string. The monochord and 2D pickup were designed with much specification and detail. However, the t...

The existing angular displacement measurement methods rely on the manufacturing precision of the fixedplate and moving-plate with high manufacturing cost, and it is difficult to overcome a static error and drift for the static measurement method. A kind of angular displacement measuring method based on correlation algorithm is presented with the characteristics of a low manufacturing cost, high...