Batu Sapphire adalah salah satu jenis batu permata yang ada di dunia, paling cari serta minati oleh para penggemarnya berwarna biru. Untuk memudahkan penjualan alami dengan menggunakan Vending machine. Metode penelitian melakukan penggambaran Finite State Automata Deterministic Automata, perancangan Diagram tentang fitur-fitur dan desain antarmuka saat machine diimplementasikan. Hasil menunjukk...

T he Internet today has been widely used by all circles, even young children are familiar with it . However, there some places that still not covered an adequate signal. Therefore , this research makes effort to create a Vending Machine can provide variety of packages be in certainly strategic places. In addition, the machine charges very affordable price and is helpful for users get proper acc...

Although millions of automatic teller machines (ATMs) are currently used all over the world, users of ATMs still have usability problems including inappropriate user-ATM interaction, display problems and others. Many developed countries already have standards in place for ATMs. However, this is not the case in many other countries. This paper aims to assess certain dimensions of ATM machines an...

Recent advances in blockchain technologies have provided exciting opportunities for decentralized applications. Specifically, blockchain-based smart contracts enable credible transactions without authorized third parties. The attractive properties of smart contracts facilitate distributed data vending, allowing for proprietary data to be securely exchanged on a blockchain. Distributed data vend...

A problem of concurrent system specification is studied. A functionally equivalent system is first specified, then a set of independent actions or abstract resources is devised, and, finally, this sequential system is transformed into an equivalent concurrent system. The method is based on the theory of path expressions. The notion of functional equivalence is formally defined and studied. Nece...

As a graphical and mathematical modeling tool, CPN (Colored Petri Net) is often used to describe the transition of states for an information system. The advantage of CPN model is that the model can be simulated dynamically. This paper presents an approach to generating test cases based on a transition graph of CPN model. The transition graph provides a solid basis for test cases generation in a...

We suggest a three-level integrated approach to design, specification and verification of distributed system. The approach is based on a newly designed specification language Basic-REAL (bREAL) and comprises (I) translation of a high-level design of distributed systems to executional specifications of bREAL, (II) presentation of high-level properties of distributed systems as logical specificat...

In this report, we advocate an approach to combine formal specification components. Our work aims at building or reusing specification components, and compose them with a gluing language constituted of a minimal but sufficient set of operators. The glue allows to have at one’s disposal a global formal specification with heterogeneous components as basic entities. The interests are manifold: mod...

The aim of this paper is to introduce a plug-and-play mechanism for an Internet of Things (IoT) device to instantiate a Software as a Service (SaaS) application in a private cloud, built up with OpenStack. The SaaS application is the digital avatar of a physical object connected to Internet. As a proof of concept, a Vending Machine is retrofitted and connected to Internet with and Arduino Open ...

In this paper, we advocate an approach to combine formal specification components. Our work aims at building or reusing specification components, and compose them with a gluing language constituted of a minimal but sufficient set of operators. The glue allows to have at one’s disposal a global formal specification with heterogeneous components as basic entities. The interests are manifold: mode...