The pot marigold (Calendula officinalis L.) is a well-known garden plant cultivated also for medicinal purposes. In Bulgaria, C. an annual plant, often self-seeding and generating escapees. present study describes assessment of the genetic diversity wilding plants originating from region Rose Valley, using SRAP (sequence-related amplified polymorphism) markers. Analysis data Structure software ...

⎯In this study, two (or more) supply chains where the suppliers share information on their production, inventory and delivery status are considered. Due to uncertain supplier deliveries and lead time, horizontal supplier coordination is implemented to reduce lead time and deliveries uncertainty, and thus the safety inventory due to risk pooling effect. As a result, the total system profit incre...

This paper studies the optimal procurement of a large-scale project. The project consists of several subprojects to be procured in a predetermined order and yields its full return upon completion. In the unique Markov perfect equilibrium of the dynamic procurement game, I find that: (1) Even though the procurer lacks long term commitment power, both the procurer and suppliers strictly prefer th...

In this work we consider the supply chain management in olive oil industry. We construct the mixed-integer programming model connecting the optimization of olives harvesting and storage and olive oil production. The goal is to maximize the olive oil producer profit consisting of revenue, production cost and storage cost. In the same time, we have to take into the consideration the farmers’ (sup...

We examine incentives for innovation from learning-by-doing for photovoltaic cell producers. Industry structure and insights from interviews are reflected in a two-period and two-stage model. Equipment suppliers decide on the price level for innovative manufacturing devices. Cell producers invest in new production lines and chose the share of innovative production equipment. Policy instruments ...

Supplier competition and investment of effort are important concerns in supply base design. They are affected not only by the number of suppliers, but also by their capacity profile. This paper studies supply base design in terms of the number and capacities of suppliers, considering both supplier competition and investment of cost-reduction effort. We analyze a buyer who invests in capacities ...

In nowadays world competitive market, on account of the development of electronic media and its influence on shortening distances, companies require some core competencies in order to be able to compete with numerous competitors in industry and sustain their situation in such a market. In addition companies achieve this target are those which their processes perform great and exploit from compe...

This paper is focused on the tactical design of steel supply chain (SSC). A general mathematical model is proposed to integrate production and transportation planning in multi-commodity SSC. The main purpose is to prepare a countrywide production and distribution plan in an SSC with three layers consisting of iron ore mines as suppliers, steel companies as producers, and subsidiary steel compan...

Successful cooperation between large manufacturers and their suppliers is a crucial aspect, especially in the automotive industry. Such mutually beneficial cooperation requires at least a certain level of integration and interoperation of the partners’ IT and e-business systems. This chapter looks at two approaches in order to achieve this goal: sector-specific harmonization (in the form of ele...