Control over catenation in a pillared paddlewheel metal−organic framework was achieved via solventassisted linker exchange. The linker exchange was demonstrated on the noncatenated structure of DO-MOF, by using 4,4′-bipyridine (L4) and 4,4′-azobis(pyridine) (L5) as linkers, leading to noncatenated materials SALEM-3 and SALEM-4. The de novo synthesized analogues of SALEM-3 and SALEM4 can only be...

This paper considers the economic lot and delivery scheduling problem in a two-echelon supply chains, where a single supplier produces multiple components on a flexible flow line (FFL) and delivers them directly to an assembly facility (AF). The objective is to determine a cyclic schedule that minimizes the sum of transportation, setup and inventory holding costs per unit time without shortage....

Abstract When checking and cleaning whether there is carbon deposit in the cylinder of gasoline engine, it often time-consuming laborious, process complicated. Once disassembly assembly not place, its service life will be affected. with carburizing agent agent, difficult to fully contact wall, so effect poor easy leave chemical composition engine. In this paper, some common ways engine are stud...

This paper reports on recent work undertaken to study the use of virtual environments for the prediction and assessment of aesthetic quality within the automobile industry. This paper builds on previously reported work and focuses on the recent development and evaluation of two new simulation modules that extend an existing system to facilitate the visualisation of non-nominal product variants....

The goal of this paper is to propose a tabu search heuristic for the car sequencing problem (CSP) used for the ROADEF 2005 international Challenge. This NP-hard problem was proposed by the automobile manufacturer Renault. The first objective of the car industry is to assign a production day to each customer-ordered car and the second one consists of scheduling the order of cars to be put on the...

Due to exorbitant product variety, very limited space, and other factors, organizing efficient and timely deliveries of parts and subassemblies to final assembly within the factory is one of the most pressing problems of modern mixed-model assembly production. Many automobile producers have implemented the so-called “supermarket” concept to transfer material to the assembly line frequently and ...

Assembly lines are often indispensable in factories, and order to attain a certain level of assembly line productivity, multiple goals must be considered at the same time. However, these may conflict with each other, this is multi-objective balancing problem. This study considers four objectives, namely minimizing cycle time, number workstations, workload variance, workstation idle Since object...

This note describes the DSP implementation of a full-duplex acoustic-echo cancellation (AEC) software. This software is based on the normalized least mean square (NLMS) algorithm. The algorithm includes active-channel and double-talk detection. This software was implemented on a TMS320C54x digital signal processor (DSP) in assembly language. It requires few resources in terms of million instruc...

Ford Motor Company’s Direct Labor Management System (DLMS) utilizes knowledge representation scheme based on the KL-ONE family of languages to represent the world of automobile vehicle assembly knowledge. DLMS is an implemented system that has been utilized by Ford personnel since 1991 and it remains an integral part of Ford’s worldwide manufacturing strategy. This paper will describe the ratio...