RESEARCH BRIEF: Origins of Supply Chain Management: First 20 Years of Research

by Edgar Arias, PhD Candidate, earias@vt.edu

Origins of Supply Chain Management: First 20 Years of Research The concept of Supply Chain Management ( SCM) is fairly new in the business literature; Giunipero et al. [1] and Mentzer [2] indicate that it was initially introduced in the 1960s by J.W. Forrester, in his book Industrial Dynamics, where the author established that success of industrial companies was intrinsically related to the “interactions between flows of information, materials, manpower and capital equipment” [1]. Nevertheless, after this initial effort to define the term, approximately 20 years passed before for the actual concept of “Supply Chain Management” to be addressed by scholars and practitioners in only a “handful” of articles between 1985 and 1987 [1, 3].

The end of the 1990s was characterized by an exponential growth in SCM research. Several literature reviews [1, 3] concur on the significant growth in the appearance of publications addressing the subject, particularly since 1999. In 2006, Burgess et al. [3] circulated a literature review where 100 peer-reviewed articles were randomly selected to study the nature of SCM publications available at the time. The group of researchers determined that out of the total sample chosen, only a small fraction were articles dated from 1985, and a total of 77 were published between 1999 and 2003. Figure 1 depicts the time distribution of publications based on Giunipero’s [1] research, which accounted for a sample size of 405 articles, covering the years between 1997 and 2006.

According to Mentzer [2], at least three factors may have contributed to the increase in interest of scholars and practitioners on the fundamentals behind the concepts of SCM in the early 2000s: trends on global sourcing, emphasis on time and quality-based competition, and their respective contribution to a greater environmental uncertainty. Globalization of suppliers and customers has brought an additional set of variables to consider in order to effectively managing business functions such as procurement, logistics, manufacturing, sales, marketing, etc.; which has posed a challenge on multinational firms to secure sustainability in highly competitive environments. Lead-time and quality, both understood as potential “market qualifiers”, are considered by Martin and Towill [4] as fundamental elements of a lean supply (chain) and therefore necessary to enable cost as a market winner , also identified by Kaplan and Norton [5] a as one of the key elements for any productivity-based financial strategy. The globalization of supply chains in combination with an increased emphasis on competition based on agility, summed to a fast pace on technology and economic condition changes, is what according to Meltzer’s perspective, it is creating the business intricacy that helped SCM become a popular area of study [2].

Continue reading “RESEARCH BRIEF: Origins of Supply Chain Management: First 20 Years of Research”

RESEARCH BRIEF: Reducing Energy Inefficiencies Using an Energy Management System

Shawn Crawford, MS Candidate at Virginia Tech Department of Sustainable Biomaterials. Contact Shawn at shawn88@vt.edu
 

Petroleum (oil) is the largest U.S. primary energy consumption followed by natural gas, coal, nuclear electric power, and renewable energy (EIA, 2011). Electricity is a secondary energy sources produced by these sources. Some of the main energy consumers in the U.S. are residential, commercial, industrial, and transportation. Industry accounts for one-third of the energy used in the country, 28% of that energy comes from natural gas and 14 % comes from electricity (EIA, 2009). Electrical demand growth is projected to increase at about 1% per year through 2035, while from 2005 to 2009 cents per kilowatthour increased by 1.24 (EIA, 2009). Due to a continually increasing demand for energy sources and a limited supply of those sources, energy prices are expected to increase (EnerNoc, 2011).

Figure 1. Electricity consumption over a 6 day period in a manufacturing facility

 Energy Management System (EMS)

An Energy Management System or EMS provides a company constant data feedback on their energy consumption. Depending on the type of EMS, energy consumption can be tracked all the way down to 5 min intervals. The more detailed the EMS the greater potential for improvements. Imagine and EMS that provides a company’s natural gas consumption every hour as opposed to a power company providing the information monthly. Some benefits of an EMS include; being able separate consumption rates, able to identify high consuming areas, able to make daily adjustments to improve monthly bill, automated system automatically manages/adjust to improve energy inefficiencies, and able to create new process improvements to increase efficient energy use. Figure 1 shows a snapshot of an EMS.

Managing Energy and Process

Fostering innovation and creativity should be an ongoing project for managers. An EMS provides the tools for a manager to take employee innovation and put it to the test. Innovative employees provide solutions to ongoing problems associated with the business, finances, process, and product, because they are the experts at their job/task. Providing employees with real time feedback showing how their improvements have helped to save money motivates employees to continually improve. This is crucial in sustaining an atmosphere of continuous improvement.

Continue reading “RESEARCH BRIEF: Reducing Energy Inefficiencies Using an Energy Management System”

RESEARCH UPDATE: Energy Savings for Wood Industries

 

Shawn Crawford, MS Candidate. shawn88@vt.edu

The purpose of this research update is to present some of the most significant energy reduction practices in the forest products sector.  This research update is currently using secondary sources, lit reviews, to discover popular energy saving practices within the forest products industry.  The update will provide industry examples of best energy management practices and how these practices should be applied throughout the forest products industry.

Figure 1. Electrical Generation by Fuel (EIA 2009)

In the U.S., industrial energy demand accounts for 26% of total energy consumption supporting the statement that the U.S. is a highly industrialized country (EIA, 2010).  14% of the industrial energy demand is supplied by electricity making electrical energy demand a large source to focus on potential reduction (EIA, 2010).  The forest products industry makes up a small portion of the U.S. industry however; with increasing prices on electrical demand electricity is a contemporary topic for savings correlated with manufacturing cost.  Electricity prices have increased by 1.24 cents per kilowatthour from 2005 to 2009 (EIA, 2010). Energy prices are predicted to steadily increase in the future.  Coal accounts for 45% of total sources used for electricity however; coal stocks have decreased between May 2010 and May 2011 by 8.6 % which is a higher percentage than expected (EIA, 2010).

Figure1 shows the predicted increase in demand for coal and natural gas as a source of fuel for electrical generation.  However; due to decreased stocks in coal and natural gas, electricity prices are predicted to rise.  With predicted rises in electrical prices this makes electricity cost within a manufacturing facility an important element to analyze.

Energy savings opportunities through the implementation of “lean” manufacturing principles applied to different processes within the system can be quantified.  When applying lean manufacturing principles, the focus is on adding value from the perspective of the consumer.  Eliminating or trimming waste from the process materializes from the idea of value adding and non-value adding through the eyes of the consumer. Waste within a process has a significant impact on manufacturing cost, where energy utilization is one predominate cost. Dominant manufacturing costs in the form of electricity consist of compressed air, inefficient motors, and lighting.

Continue reading “RESEARCH UPDATE: Energy Savings for Wood Industries”

Applying Business Process Management to a Public Water Management Company

Dr. Henry Quesada delivers a CI training in Costa Rica

Increasing demand for drinkable water and proper sewer systems are the main drivers for utilities companies to look for different approaches to better manage their organizations. A better management of the organization’s assets could lead to an increase in customer satisfaction levels and also to an increase in productivity. In recent times public managed companies have realized the value of continuous improvement (CI) methodologies such as six sigma or lean management because of their positive impact and connection with the organization’s strategic goals. CI methodologies help organizations to achieve significant levels of success by performing small incremental changes in their processes, products, or organizational structures. These small changes are in most cases preferred because they slowly permeate into the organization’s culture and structure and avoid radical changes and potential high risk.

Continue reading “Applying Business Process Management to a Public Water Management Company”

WORKSHOP: Lean Management (Spanish)

 Lean Management

Desde el nacimiento del término en la Corporación Japonesa Toyota, la administración esbelta (Lean Management) ha sido una de las filosofías más eficaces para identificar valor y eliminar desperdicio en los procesos de empresas manufactureras y de servicios. La filosofía es hoy en día parte fundamental de los planes de acción de empresas grandes y pequeñas en su lucha por aumentar la productividad y calidad de los productos y servicios que ofrecen.

Para muchos la filosofía de pensamiento esbelto parece algo destinado sólo para las grandes empresas transnacionales. Sin embargo, hoy en día existen organizaciones consideradas pequeñas que han logrado una implementación eficaz y eficiente de esta filosofía. El éxito en la implementación del pensamiento esbelto radica en los principios de trabajo en equipo a través de los eventos Kaizen y la identificación de la cadena de valor como primeros pasos. Sólo diferenciando las actividades que generan valor de las que no es que las empresas han encontrado una nueva forma de aprovechar mejor sus recursos para producir más con menos. La administración esbelta puede ayudar a empresas de manufactura y servicio en esta tarea de identificar valor de manera que la estrategia de la firma gire en torno a las actividades o procesos que generen valor según la percepción del cliente.

Los beneficios de Lean Management están sumamente ligados al compromiso que tenga la administración de la firma para cambiar la personalidad, cultura, u organización de la empresa. Este cambio se basa en la reducción sistemática de desperdicio y el desarrollo de niveles de satisfacción a través de trabajo en equipo impactando todos los procesos del negocio. Adoptar el Sistema “Lean” permite a la empresa crear un sentido de dirección para alinear los procesos que no ofrecen valor y poder dar seguimiento a las mejoras a través de un conjunto de indicadores confiables.

Los conceptos y beneficios de Lean Management se pueden extender más allá de empresas de manufactura. Hoy en día Lean Management es utilizado por administradores en una amplia variedad de disciplinas e industrias como construcción, salud, finanzas, y gobierno. Administradores en estas disciplinas han ido progresivamente implementando Lean Management en sus procesos teniendo como resultado un impacto significativo en la estructura de costos así como en los niveles de satisfacción de los clientes.

Continue reading “WORKSHOP: Lean Management (Spanish)”