A troublesome phenomenon encountered durmg the reahzatlon of free-standmg mlcrostructures, for example, beams, diaphragms and micromotors, IS that mltlally released structures afterwards stick to the substrate This effect may occur durmg wafer drying after the etching process has been completed, as well as during normal operation as soon as released structures come mto contact with the substrat...

In production process, scheduling isan important role in meeting the orders and reducing cost. This process becomes more complicated when factory produces various products. Scheduling model can be divided into two groups: make-to-stock (MTS) make-to-order (MTO). General constraint MTSmodel is limited capacity inventory work aims to propose hybrid MTS-MTO that improve lead time maintain low inve...

Methanol-to-olefins is a promising process that has attracted the attention of many research groups in last years. Zeolites are primary catalyst for this process, and SAPO-34 one most used because its high selectivity toward C2–C4 olefins. As drawback, it deactivates quickly forces to work alternately using reaction regeneration cycles. The mechanism by which still on debate, further needs be d...

Pull systems focusing on throughput time control and applicable in situations with high variety and customization are scarce. This paper compares pull systems that can cope with such situations: POLCA and CONWIP. Both systems constrain the maximum amount of work in progress (WIP) within a loop, but their effectiveness in terms of reducing total throughput time is questioned. They mainly differ ...

The association between natural viral infection and remission of cancer has been described for over a 100 years. 1 The clinical observations that microbial infection of tumor may produce direct killing of cancer or through host immune actions are the basis of the field of oncolytic viral therapy. Astute investigators in the 1950's through the 1960's attempted to capitalize on such observations ...

Make-to-order (MTO) operations have to effectively manage their capacity to make long-term sustainable profits. This objective can be met by selectively accepting available customer orders and simultaneously planning for capacity. We model a MTO operation of a job-shop with multiple resources having regular and non-regular capacity. The MTO firm has a set of customer orders at time zero with fi...