Search results for "supply network"
showing 10 items of 11 documents
Medición del efecto látigo en redes de suministro
2016
La variabilidad de la demanda que se origina de un agente a otro en la cadena de suministro, aumenta o amplifica a medida que la señal se aleja del punto de origen; estas distorsiones se denominan Efecto Látigo. En este artículo se aborda una red de suministros multieslabón, que estima los intervalos de medición de la distorsión de la demanda de la red, de acuerdo a comportamientos extremos en el sistema que permiten diagnosticar su desempeño en términos de la amplificación de demanda. Para la investigación se aplican mediciones estáticas locales y globales del efecto látigo, en cada nivel de la red de suministros del juego de la cerveza de cuatro eta-pas; cada etapa o eslabón tiene múltipl…
Optimization of Osmotic Desalination Plants for Water Supply Networks
2016
Water scarcity and the poor quality of water resources are leading to a wider diffusion of desalination plants using the Reverse Osmosis (RO) process. Unfortunately, the cost of a cubic meter of fresh water produced by an RO plants is still high and many efforts are in progress to increase the efficiency of the membranes used in osmotic plants and to limit the energy required by the process. A further reduction of the energy cost could be obtained by an optimal operation of the desalination plant so reducing the hourly energy cost, or by coupling the RO plant with an energy production plant based on direct osmosis (Pressure Retarded Osmosis PRO). The economic viability of the desalination p…
To trust or not to trust – a case of Finnish technology industry supply network
2010
Conference paper. Presented in the EIASM 5th Workshop on trust within and between organizations, Jan 28-29, 2010, Madrid, Spain peerReviewed
Cross-Flow Turbine Design For Energy Production And Discharge Regulation
2015
Cross-flow turbines are very efficient and cheap turbines that allow a very good cost/benefit ratio for energy production located at the end of conduits carrying water from a water source to a tank. In this paper a new design procedure for a cross-flow turbine working with a variable flow rate is proposed. The regulation of the head immediately upstream the turbine is faced by adopting a shaped semicircular segment moving around the impeller. The maximum efficiency of the turbine is attained by setting the velocity of the particles entering the impeller at about twice the velocity of the rotating system at the impeller inlet. If energy losses along the pipe are negligible, the semicircular …
Management dilemmas in innovative supplier networks
2016
This paper focuses on the challenges in managing innovation within supply networks. We present an empirical study on innovation collaboration between a focal company and its supply network of small and medium sized enterprises. By analysing the case from the viewpoints of the focal company, the suppliers and investors we point out three controversial issues in innovation management within the supply network: intellectual property rights, partnering versus competition, and commitment versus independency. Furthermore, we analyse the suppliers' positions with a purchasing portfolio model and present implications for innovation management practices in supply chains. peerReviewed
A New Device for Pressure Control and Energy Recovery in Water Distribution Networks
2017
The potential energy of the water in Water Distribution Networks (WDNs) usually exceeds the amount needed for delivery and consumption and, at the present time, it is mainly dissipated through Pressure Reducing Valves (PRVs) or Open Water Tanks. The present study suggests the use of a new energy-producing device, a Cross-flow turbine with positive outlet pressure named PRS (Power Recovery System), which can provide the same service as PRVs and water tanks, with additional significant hydropower production. After a short presentation of the PRS, the management rules of the proposed device are laid out, according to two possible modes. In the ‘passive’ mode, the piezometric level downstream o…
Trouble in Paradise: a Case of a Technology Industry Supply Network
2009
The development of value networks is regarded as a necessity for achieving agility in global markets. Nowadays the focal companies often state that they are committing to more in-depth partnerships with selected suppliers, which are given more responsibility over both production and R&D. In this article we study the relationship of one focal company with its suppliers and identify the main concerns regarding governance and cooperation within the studied supply network in relation with the focal company’s strategy to enhance its innovative capabilities and ensure capacity in its supplier network. By analyzing the network relationships from three differing vantage points (the focal company, t…
Business networking strategy: operations management and organizational economics different perspectives
2008
THE DEVELOPMENT OF BUSINESS LOGISTICS CONCEPT. FROM OPERATIONAL MANAGEMENT OF LOGISTICS PROCESSES TO THE INTEGRATED FLOW MANAGEMENT WITHIN THE SUPPLY…
2019
Background: Firms constantly search for ways enabling them to achieve and maintain longterm competitive advantage. Among the most significant concepts influencing the achievement of such an advantage by a firm, an important role is played by the business logistics concept. The aim of the chapter is to identify the most important stages of the logistics concept development, ranging from the operational management of logistics processes to the integrated flow management throughout the entire supply network. Methods: The chapter has a conceptual character. A review of significant works devoted to the development of the logistics concept in business was carried out. Within the chapter there is …
La «innovación escondida» de las pymes industriales en el capitalismo español. Gestión, estrategias y repertorios de prácticas innovadoras en pymes m…
2019
Las pymes industriales dinámicas e innovadoras son una de las bases de prosperidad colectiva en algunos países y regiones europeas. Desde una sociología multinivel que integra los niveles micro (empresarial-organizativo), meso (regional-local y sectorial) y macro (capitalismo estatal-nacional) dentro del sistema de redes-cadenas de producción del capitalismo global, el artículo analiza la actividad innovadora de las pymes industriales, la cual se puede denominar innovación escondida al no aparecer en los indicadores convencionales de innovación. En base a 22 entrevistas semiestructuradas a directivos de pymes manufactureras de Cataluña, se aplica la Teoría Fundamentada para construir catego…