Cell Programming Language Research Articles

Approaches to work cell programming language design

User-friendly work cell programming languages are needed for many flexible manufacturing system applications. This paper surveys representative languages and code generators and identifies design criteria for improved work cell programming languages. Two object-like languages developed to support programming of a small work cell are presented. The first, Cell Programming Language (CPL), is a traditional statement-oriented language that provides a simple and user-friendly model for programming a small work cell using object-like constructs. The second language, State-based Control Language (SBCL), is a state-based language using the same objects as CPL, but incorporating support for concurrency. Both languages focus on cell-level control. The languages are implemented in an interpreted (or virtual machine) environment that distinguishes them from most other control languages, which are based on machine language.

Cellular segregation and engulfment simulations using the cell programming language

In developmental biology, modeling and simulation play an important role in understanding cellular interactions. In this paper a simple language, the Cell Programming Language(CPL), is suggested for writing programs that describe this behavior. Using these programs, it is possible to simulate and visualize intercellular behavior. CPL is used to model cellular segregation based upon the differential adhesion hypothesis. Results indicate that a high degree of segregation can be produced in a mixture of cells by allowing random motion. The engulfment of a tissue by a less adhesive tissue is also observed when the two tissues are placed in contact. Both these simulations utilize only local interactions and random motion of cells. Earlier simulations used long-range interactions to observe similar effects. The present simulations prove that random motion of cells can produce long-range effects.

The Cell Programming Language

In developmental biology, modeling and simulation play an important role in understanding cellular behavior. This article includes a review of the general models of development that are based on cellular interaction. Inspired by these models, we suggest a simple language, the Cell Programming Language (CPL), to write computer programs to describe this developmental behavior. These programs are an estimate of the minimal information needed to model realistically such developmental systems. Using these programs, it is possible to simulate and visualize cell behavior. We have employed CPL to model the following: aggregation in cellular slime mold in response to a chemotactic agent, cellular segregation and engulfment due to differential adhesion, and precartilage formation in vertebrate limbs. We believe CPL is a useful tool for developing, understanding, and checking biological models.

Simulation of aggregation in Dictyostelium using the Cell Programming Language.

In developmental biology, modeling and simulation play an important role in understanding cellular interactions. We suggest a simple language, the Cell Programming Language (CPL), to write computer programs to describe this behavior. Using these programs, it is possible to simulate and visualize intercellular behavior. We employ CPL to model aggregation in Dictyostelium in response to a chemotactic agent. CPL programs are utilized to model a variety of aggregation behavior including streaming, spiral formation and the effect of amoeba density on aggregation patterns. We believe CPL is a useful tool for developing, understanding and checking biological models that utilize cellular interactions.

The Cell Programming Language

In developmental biology, modeling and simulation play an important role in understanding cellular behavior. This article includes a review of the general models of development that are based on cellular interaction. Inspired by these models, we suggest a simple language, the Cell Programming Language (CPL), to write computer programs to describe this developmental behavior. These programs are an estimate of the minimal information needed to model realistically such developmental systems. Using these programs, it is possible to simulate and visualize cell behavior. We have employed CPL to model the following: aggregation in cellular slime mold in response to a chemotactic agent, cellular segregation and engulfment due to differential adhesion, and precartilage formation in vertebrate limbs. We believe CPL is a useful tool for developing, understanding, and checking biological models.

Design of a control system for a flexible manufacturing cell

A manufacturing cell control system (MCCS) is proposed for a small (4 to 6 machines) job shop production flexible manufacturing cell. The aim of MCCS is to solve the technological and scheduling problems of manufacturing in systems having a scarcely predictable and turbulent mix of products. The activities of MCCS are divided in two logical parts: (1) a manufacturing development subsystem devoted essentially to technological problems (process planning, operation sequencing, tooling, routing), and (2) a manufacturing management subsystem devoted to management activities (planning, scheduling, operative control of the system). After a brief description of the design concepts of MCSS, the manufacturing development subsystem will be described with some detail in this paper. In particular, a formal system of piece manufacturing specifications (PMS), capable of being largely computer aided is presented. Furthermore, a high-level cell programming language (CPL) is proposed to translate the PMS operation sequence into working activities within the cell. An example of the use of PMS and CPL for a cover-like piece is presented.