Description
This paper examines the case of one supply chain in the electricity sector where RFID technology integrated with firm’s information systems acts as an enabler of process optimization. Using a business process approach and laboratory simulation, we explain how the implementation of RFID technology can increase the visibility of information at various layers of the supply chain, allowing members to gather precise information on real demand and improve replenishment processes.
University of Wollongong
Research Online
Faculty of Informatics - Papers (Archive) Faculty of Engineering and Information Sciences
2008
Understanding the Impact of Emerging
Technologies on Process Optimization: Te Case
of RFID Technology
S. F. Wamba
University of Wollongong, [email protected]
Y. Bendavid
Polytechnic School of Montreal
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Publication Details
Tis conference paper was originally published as Wamba, SF & Bendavid, Y, of Emerging Technologies on Process Optimization: Te
Case of RFID Technology, 13th Asian-Pacifc Decision Sciences Institute Conference, 2-5 July, Brisbane, Queensland, Australia.
Original conference information available here
Understanding the Impact of Emerging Technologies on Process
Optimization: Te Case of RFID Technology
Abstract
Tis paper examines the case of one supply chain in the electricity sector where RFID technology integrated
with frm’s information systems acts as an enabler of process optimization. Using a business process approach
and laboratory simulation, we explain how the implementation of RFID technology can increase the visibility
of information at various layers of the supply chain, allowing members to gather precise information on real
demand and improve replenishment processes. On the other hand, while RFID technology has the potential
to automate some processes, human intervention is still required. Terefore, use case scenarios and sensitivity
analysis should be carefully considered when selecting the proper design (architecture options) for the virtual
and hardware components of RFID systems. Te choice of the appropriate confguration needs to be
integrated in the frm’s strategies and supply chain partner’s vision.
Keywords
RFID, business process, Lab, ERP
Disciplines
Business Administration, Management, and Operations | E-Commerce | Management Information Systems |
Physical Sciences and Mathematics | Technology and Innovation
Publication Details
Tis conference paper was originally published as Wamba, SF & Bendavid, Y, of Emerging Technologies on
Process Optimization: Te Case of RFID Technology, 13th Asian-Pacifc Decision Sciences Institute
Conference, 2-5 July, Brisbane, Queensland, Australia. Original conference information available here
Tis conference paper is available at Research Online: htp://ro.uow.edu.au/infopapers/714
Understanding the Impact of Emerging Technologies on Process Optimization:
The Case of RFID Technology
Samuel Fosso Wamba
1, 2, 3
[email protected] and Ygal Bendavid
1, 2
(1)
Academia RFID, 9916 Cote de Liesse, Montréal, QC, H8T 1A1, Canada
(2)
Department of Industrial Engineering, ePoly Center of Expertise in Electronic Commerce, École
Polytechnique de Montréal, Station Centre-Ville, C.P. 6079, Montreal, QC, H3C 3A7, Canada
(3)
School of Information Systems & Technology (SISAT), University of Wollongong, Wollongong
NSW 2522 Australia,
Abstract
This paper examines the case of one supply chain in the
electricity sector where RFID technology integrated with
firm’s information systems acts as an enabler of process
optimization. Using a business process approach and
laboratory simulation, we explain how the implementation
of RFID technology can increase the visibility of
information at various layers of the supply chain, allowing
members to gather precise information on real demand and
improve replenishment processes. On the other hand,
while RFID technology has the potential to automate some
processes, human intervention is still required. Therefore,
use case scenarios and sensitivity analysis should be
carefully considered when selecting the proper design
(architecture options) for the virtual and hardware
components of RFID systems. The choice of the
appropriate configuration needs to be integrated in the
firm’s strategies and supply chain partner’s vision.
1. Introduction
Over the past, RFID technology (Radio-Frequency
Identification) has attracted the attention of the scientific
community. This increasing interest can be ascertained
through various special issues on the topic in academic
journals such as International Journal of Production
Economics, Production and Operations Management,
IEEE Transactions on Automation Science and
Engineering, International Journal of Electronic Business
and Journal of Theoretical and Applied Electronic
Commerce Research. Following this trend, this paper
addresses the case of one supply chain in the electricity
sector with emphasis on internal customers in charge of the
power grid maintenance and operation. The main objective
of the paper is to explain how RFID technology integrated
with firm’s information systems can act as an enabler of
process optimization and enhance the efficiency of a
supply chain.
Section 2 presents RFID technology. In section 3, a
literature review is presented with regards to supply chain
optimization integrating RFID technology, followed in
section 4 by an evaluation of the business value of
information technology. In Section 5 the context of the
study is presented followed in section 6, by the research
design where the business process approach and laboratory
simulation are presented. In section 7, selected RFID
enabled scenarios are discussed in terms of process
optimization. Lastly, the conclusion and future research
are presented in section 8.
2. RFID Technology
RFID technology is a wireless automatic identification
and data capture (AIDC) technology (see [16]). A basic
RFID system is composed of a tag containing a
microprocessor, a reader and its antennas, and a computer
equipped with a middleware program, in which business
rules are configured to automate some decisions [2]. The
tag, which is generally attached to a product,
communicates through radio frequencies with the reader’s
antennas. The reader sends the location and unique
identification of the product to a computer. When this
information is routed to specific enterprise information
systems (e.g. Enterprise Resource Planning Systems-ERP,
Warehouse Management Systems-WMS), automated
transactions can be performed such as reject unplanned
receipts, directly enter receipt into computers, compare
ASN (Advance Shipping Notice) for inbound deliveries,
etc.
Beside some standards and technological limitations
such as the read rate, data reliability, lack of unified
standards, high costs associated to the technology
(hardware and software), security issues (i.e. data access,
privacy and legislation) [4], RFID technology presents
many advantages over other AIDC (Automatic
Identification and Data Capture) technologies such as (i)
simultaneous multiple readings, (ii) no line of sight
requirements, (iii) read and write capabilities, longer read
range, etc. While RFID technology is considered
promising, there are still many questions concerning its
adoption [8], specifically in the ways its real potential can
be delivered. Therefore, the objective of this paper is to
demonstrate “how business processes can be optimized
using RFID technology”.
3. Literature Review on RFID Impact in the
Supply Chain
Previous works on RFID impacts in supply chain
context is still scarce, but represent a burgeoning area of
research. Most recent papers can be classified in four main
areas: conceptual papers, simulation modeling and
mathematical papers, articles with empirical results from
laboratory and from field studies.
For instance, among the conceptual papers, [18]
suggest that RFID may facilitate the development of
emerging supply chain configuration by acting as an
enabler of a build-to-order supply chain management
strategy. In the same vein, [25] and [31] suggest that RFID
may facilitate supply chain collaboration practices and
may constitute a link to more collaborative approaches
such as CPFR (collaborative planning, forecasting and
replenishment). [23] examine how RFID technology can
act as an enabler of traceability in the food supply chain.
The authors also outline an “information data model” for
supporting traceability information modeling and an EPC
(Electronic Product Code) based system architecture to
indicate how to deploy the solution across a supply chain.
While exploring the impacts of RFID in a retail supply
chain, [25] and [15] also identify the emergence of
“intelligent processes” to support RFID enabled B-to-B
e-commerce applications.
When considering simulation modeling and
mathematical papers, authors have used various models to
assess the impact of RFID on supply chain performance.
For instance, [17] developed some “mathematical
frameworks” to evaluate quantitatively the impact of RFID
technology in various aspects of supply chain management.
Indeed the author looks at (i) the costs and incentive issues
in a supply chain implementation (ii) the added value of
information visibility in the supply chain, and (iii) the
benefits of implementing RFID technology in an assembly
environment. For instance, when considering the
improvement of inventory control policies through the use
of RFID, the author found that replenishment decisions
“overall cost improvement is in the range of 2.8 to 4.5%
with product progress information accounting for 47% to
65% of the cost savings” [17 p 15, 68]. Based on the six
“fundamental operation (business) models” found in the
Taiwan's printing industry [21] carried out a quantitative
benefit analysis for RFID applications in different supply
chain activities and presented the impact at various supply
chain levels. For example, when considering quantitative
cost and benefit analysis at the retailer level, the proposed
item tagging mechanism can save multiple working days
per year, and stock checking could be accomplished within
one hour instead of several days when compared with bare
codes. [14] used simulation as research method to study
the impact of several factors that cause inventory
inaccuracy (e.g. theft, unsaleables, misplaced items,
incorrect deliveries) on a number of monetary (e.g. cost
components that are affected by the factors that cause
inventory inaccuracy) and non monetary (i.e. inventory
inaccuracy, out-of-stock) supply chain performance
measures within a retail supply chain. Their results
indicate that eliminating inventory inaccuracy can reduce
supply chain cost as well as the level of out-of-stock, and
that RFID technology could greatly contribute to this
issue.
With respect to articles with empirical results from
laboratory studies, [16] explore the impact of RFID
technology and the EPC Network on mobile B2B
e-commerce in a retail supply chain. The authors point out
some major impacts in terms of (i) business and
operational process reengineering, (ii) IT infrastructure
requirements, (iii) information sharing/synchronization
between SC members, (iv) human and physical resource
utilization, and finally, (v) strategy redefinition. [4]
explore the impact of RFID technology in a five layer
supply chain in the utility industry. The authors indicate
that “open loop RFID implementation” could drastically
benefit to all supply chain members. Based on selected
RFID-enabled scenarios, they suggest multiples areas of
impacts such as (i) a better “asset utilization” (e.g. fleet
management by the transportation company, assembling
lines at the supplier level), without compromising (ii) the
“quality of service” provided by the operators, (iii) major
benefits in terms of “inventory management” at all the
supply chain levels, with the possibility to be provided
with real time inventory updates that was translated in
terms of millions, etc.
Finally, among articles with empirical results from field
studies, other recent studies such as those proposed by [27]
and [20] examine the influence on RFID technology on
emerging applications in the retail supply chains. More
specifically, [27] investigated the pilots conducted at the
Metro group in Germany, and found that the RFID
technology contributed to a reduction in out-of-stock by 9
to 14%, as compared to the preceding year, while
optimizing store space by about 11%. [20] conducted an
independent study at “Wal-Mart RFID-enabled stores”
over a period of 29 weeks. They found similar impacts
with RFID enabled stores being 63% more effective in
replenishing out-of-stocks than stores without RFID,
which can be translated into a reduction of out-of-stocks by
16%. [26] also examine the results of a joint RFID pilot
project conducted between Kaufhof Department Stores, a
leading European retailer and Gerry Weber, a fashion
merchandise manufacturer. Following the pilot, the
companies could observe time savings in moving
merchandise through the supply chain, lower labor costs in
existing processes, higher data quality and new service
offering possibilities. The authors also lay emphasis on
“data, about processes, product movement, and even
customer behaviour (…) that can be used for proprietary
and distinctive capabilities to gain competitive advantage
(if) turned into understandable and usable ‘content’”.
Again, previous studies suggest that RFID technology
is part of a broader system where automated data capture
has little value unless translated into business intelligence.
4. Evaluating the Business Value of
Information Technology
According to comparative analysis of worldwide IT
spending that have been aggregated by eMarketer, analysts
indicate a steady increase from 4% to 8% over the years
with sharpest growth is Eastern Europe and other
developing countries [11]. The global ICT spending was
expected to reach $2.86 trillion in 2005 with the US
market alone accounting for 39.6% of the worldwide
market spending. In the specific case of RFID technology,
analysts predict a $5.29 billion RFID market in 2008, with
an increase of almost 7.3% over the previous years.
Forecasts indicate that RFID spending will double before
2012 [22]. Other sources evaluate RFID annual growth
rates are over 23% [7]. These growing investments in IT
are pressuring many academics and practitioners to seek
for economic justification as “more than ever IT
executives encounter the justification issue due to senior
management’s insistence that the investment be properly
utilized” [9, p. 273]. The literature on the evaluation of
business value of IT can be classified into two main
categories, namely the production-economics based
approach and the process-oriented approach [33].
Respectively, studies in the first category use
production functions to study the relationship between IT
investments and productivity at the firm level, while
studies in the second category try to assess the impact of IT
investments on specific processes [30].For instance, by
adopting a production-economics based approach [5],
showed considerable return in IT investments at the firm
level in terms of cost savings, quality of service
improvement and better customer service. However, as
noted by [30, p. 200] the impacts of IT investments are
“perhaps better observed at the process level (versus the
firm level)”. Indeed, when the process approach is used to
assess the impacts of IT investments, other factors that
affect the translation of these investments into impacts are
investigated more obviously [24]. The process-oriented
approach has been used by various researchers to assess
the impact of IT (e.g. [13][25]), and it has been considered
as the best approach to study the impact of IT at a more
exhaustive level [6].
5. Context of the Study
In the utility context, the adoption of RFID technology
is still at its early stages and the use of this technology are
under preliminary investigation, mainly due to the
“technology push” from technology suppliers, as well as
competitive market conditions that create pressure toward
supply chain optimization solutions. In fact, today, the
world energy production is driven by demand with the
global energy consumption that has been rising over the
past three years at an annual average rate of 4.2% and is
expecting to rise in the years to come, with Asia and
Australasia (excluding Japan) which are expected to
consume almost as much energy as North America by 2009
[10]. In Canada, the energy sector accounts for nearly 6%
of GDP, which represents 1.9% of the labor force (327,000
jobs) and has been a major engine of growth in recent
years). Beside crude oil, natural gas, coal and uranium,
Canada is a major producer of electricity in the world (the
fifth largest producer of energy in the world), which
accounts for 9% of its total energy output. In this sector,
the country benefits from low-price electricity as
hydroelectric generation is the most important source of
electricity supply, accounting for 60% of the total
electricity output [10]. Owing to the abundance of energy,
the size of its territory, the rigor of its climate and the high
level of industrialization of its economy, Canada ranks
among the most intensive consumers of energy.
Nevertheless, Canada’s energy output exceeds domestic
needs from far, and the surpluses are exported in the US
which is its major client [12].
Since 1997, following a restructuring of the North
American market initiated by a deregulation opening the
markets to competition, utility industry has undergone
significant changes, with the entrance of important
competitors specializing in the production and trading of
electricity and other forms of energy. This phenomenon
has pushed industry members to rethink some of their
strategies and revise their business practices. In this
context, while supply chain applications at a strategic level
(e.g. strategy definition, supplier relationship management,
contractual logistic management) have been considered as
a rich area of opportunity for cost reduction [19], this
article focuses more on the operational aspects of supply
chain management. For instance, activities such as power
grid maintenance and mobile field service have also been
identified as having important effect on cost savings and
level of service improvement [32]. It is along this
continuum of electronic platforms (e.g. ERP, electronic
marketplaces) and IOS adoption, that utilities are now
looking toward emerging technologies such as RFID to
drive transaction cost reductions.
6. Methodology
This paper is part of a larger study conducted to
improve our understanding of RFID technology in a
supply chain context. The business process approach and
laboratory simulation are selected as they proved to be
relevant in order to assess the impacts and potential
benefits of RFID technology (e.g. [25][16]).
6.1 Research Sites
The investigated utility supply chain consists of: (i) a focal
firm (Firm A), one of its strategic first-tier suppliers (Firm
B), and one of its internal customers (Firm C). Firm A is a
major player in the utility industry (electricity) in North
America. As managers from Firm A indicated, among their
primary motivation toward RFID technology adoption, the
power grid maintenance and operations (repair) were key
areas of potential improvements. Firm A owns two major
distribution centers (DCs) and receives thousands of
products (namely overhead distribution transformers)
every year, of which 15 thousand are considered strategic
components of its power supply infrastructure. These
products which were selected in the study are distributed in
90 stores disseminated in a vast territory. Following a
power outage, missing one product could have a serious
impact on network down time. Therefore, optimizing
product replenishment at specific stores (level) and
automating the picking process at the store location were
identified as critical activities.
6.2 Data Collection
For this study, both qualitative and quantitative data
were collected using (i) on-site observations, (ii)
interviews and (iii) joint working session with industrial
partners in laboratory settings.
1. On-site observations were conducted in all research
sites involved in this study. The main objective of on-site
observations was to map the current intra- and
inter-organizational business processes (As-Is) related to
the chosen product value chain. This was done using a
Business Process Analysis tool (ARIS Toolset) at various
stages of the research. The ARIS Toolset is a Business
Process Analysis (BPA) tool used for global definition,
mapping, analysis, optimization and implementation of
business processes. It helps to make “quick decisions
about the management of e-business processes, by
providing realistic simulations of resource utilisation,
activity-based cost calculations, as well as web-based
communication of modelled and optimised company
processes” [1, p. 1].
2. Interviews were conducted with a semi-structured
questionnaire to complement to observations and gather
more information on specific business processes.
3. Joint working sessions where conducted with key
respondents from each firms to identify critical processes
to be redesigned while integrating RFID technology The
resulting RFID-enabled B2B e-commerce scenarios,
therefore, had to be validated by ERP consultants and
RFID solution providers and, most importantly, by a
middleware provider in order to ensure their technical
feasibility. This iterative approach allowed refining the
scope of the simulation in laboratory settings (see the
RFID laboratory in figure 1).
6.3 RFID Laboratory
The laboratory where RFID-enabled B2B e-commerce
scenarios were simulated is presented in figure 1.
On the left side, an RFID portal represents the
supplier’s shipping dock including:
• Photo eye (1) for automatic product detection and
trigger to activate two fixed antennas (2). This procedure
allows the antennas to be awakened and transmits radio
waves only where necessary.
• These two antennas are connected to a fixed reader
(3) that captures the information written on the tags (4).
• A stack light (5) linked to this reader allows the
confirmation of the status of the readings as the products
(or boxes) are passing on the conveyor belts (6).
• On the right side of figure 1 of an RFID portal
represents a customer’s receiving dock (7) with technical
consideration similar to that of the shipping dock.
• Based on each specific business cases, other
technological options could be considered such as
mounted RFID fork lift or handheld RFID gun.
• The third part of the laboratory is composed of the
ERP and middleware servers where all the business rules
are configured (8). While the new generations of readers
allow “built in intelligence”, in the case of these pre-pilot
experiments, business rules where configured in the
middleware.
• For the purpose of the demo, OMS from Ship2save
was used at the supplier location (simulated environment),
and Catamaran (provided by Hewlett Packard and
Shipcom Wireless) was used at the client location
(simulated environment). The integration of these two
middleware was facilitated with pre-configured bridges.
Because of the scope of this paper, our discussion will only
emphasize on the results obtained within Catamaran.
• Ultimately, the last components are the three screens
on the walls (9), where all the information resulting from
transactions is projected, allowing participants to follow
the information flow in real time, as each transaction is
automatically performed.
• Moreover, complementary devices such as mobile
RFID reader (i.e. RFID gun) were used, to allow real time
access to the middleware in order take action while being
on the move.
7. RFID-Enabled Scenarios
In this study, we have adopted a “store” perspective in
conformity with the indication of firms A managers on
targeted critical activities. This focus enables researchers
to understand HOW the work would be carried out within
one store as a power grid operator would handle an
electronic working order (eWO) in order to fix a power
outage.
The EPC (Event-driven Process Chains) formalism
was used as a common language between all the project
stakeholders for the participants to fully understand the
impacts of implementing RFID technology on selected
processes. The EPC formalism allows a logic
representation of activities within and between processes.
An interesting aspect of the EPC formalism is that it
highlights all the events that trigger the activities and the
resulting sequence of events; suggesting that a process can
be seen as a chain of events and functions (i.e. an activity
which needs to be performed). Moreover, the modeling of
a business process using EPC formalism uses three types
of logical connectors to indicate the workflow between
activities and events, mainly the “^” (i.e. and), “v”(i.e. or)
“XOR” (i.e. exclusive or). In addition to the basic
representation of a process using EPC formalism, it is
possible to assign responsibilities (i.e. employee) to a
specific function, allocate a system which is used to
perform the function (e.g. ERP, RFID middleware),
indicate information inputs and outputs (e.g. RFID data)
specify some business rules, assign them to logical
connectors and quantify their probabilities of occurrence.
7.1 Simulated Scenarios in the Laboratory
Today, when a power outage occurs, the operators have
to call a maintenance center for identifying the closest
remote store where required products (e.g. transformers)
are available in order to proceed with their picking before
to go on the site for repairing the power grid. However,
because of store management issues, a store manager has
to be assigned for opening the store, providing operators
with the products and filling up the documentation. An
alternative approach being used is a permanent store
manager assigned to a specific store.
Indeed, if multiple stores can constitute critical
inventory buffer areas between remote locations and
distribution centers, the current situation is rather costly
and inefficient. Therefore, a redesigned process
integrating RFID technology was proposed and validated
in laboratory settings. The simulated scenario represents
the automatic “access” to a remote store for the “automatic
picking” of a “specific product” in order to fix a power
outage that just occurred (Figure 2).
1
2
3
5
6
7
8
9
4
1
2
3
5
6
7
8
9
4
Figure 1: ePoly RFID –ERP Laboratory
(a) Select the e-Work Order (b) Read the RFID Tag on the selected product (c) Post the transaction to the ERP
(c-1) Actual Store Inventory (c-2) Atomated real time inventory update
(a) Select the e-Work Order (b) Read the RFID Tag on the selected product (c) Post the transaction to the ERP
(c-1) Actual Store Inventory (c-2) Atomated real time inventory update (c-1) Actual Store Inventory (c-2) Atomated real time inventory update
Figure 3: Steps related to automated picking in a store
Semi automatically
associate the product
with the e-WO
Stock movement
notified
Operator ID
accepted
Product match
Operator IDnot
accepted
Supplier Notified
Product does not
match
Automatically notify
stock movement and
pass transaction in
ERP
Semi automatically
read RFIDtags on
the product(s)
Automatically adjust
the inventory at the
specific location
Field Operator
automatically
identified
Go to specified
location (for
product picking)
e-Working Order
(e-WO) sent
Automatically
Receive e-WO
Arrived at the
store
Locate
Product(s)
Middleware
Middleware
Product picked
up
Middleware
Middleware
Field Operator
Field Operator
Field Operator
Pick up the product and
exit store
SAP - MM
SAP-RH
Mobile Device
SAP - MM
e-WOreceived
SAP - MM
RFIDsmart Card (ID)
Field Operator
identified
Access
automatically
authorized
Middleware
SAP-RH
Access
authorized
RFIDtag
e-WOassociated with
Operator IDand product
ID
On hand Inventory
adjusted
RFIDtags read
Middleware
SAP - MM
Stock movement
Middleware
SAP - MM
SAP - MM
ACCPAC - ERP
e-Working Order
Read automatically the
Operator ID
Stock movement notification
DC notified (based on
predetermined
business rules)
Internet
RFIDentry card
automatically read
RFIDsmart Card (ID)
e-Working Order
e-Working Order
Mobile Device
Product(s)
loxated
Field Operator
RFIDtag
Stock movement
Automatically notify
the DC for
replenishment
procedure (if required)
Automatically notify
the supplier for
replenishment
procedure (if required)
Stock movement notification
Go to power
outage
e-Working Order
Read automatically
the Operator ID
RFIDsmart Card (ID)
Access
authorized
Middleware
SAP-RH
Operator movement notification
= AND = OR = XOR
X
System
Human
ressource
Electronic Document
Event Function
Figure 2: Simulated RFID-enabled scenario
7.2 Discussion
The following course of actions is triggered by an
electronic working order (e-WO) sent to an operator in
order to fix a power outage that has just occurred.
More precisely, the following steps can summarize the
scenario simulated (Figure 2) in laboratory:
1. When the e-WO is received, the operator can
directly access the ERP from the field, using a wireless
device (i.e. PDA), check product availability in the
inventory and reserve the required product at the closest
store.
2. When the product arrives at the store, by automating
its identification (i.e. RFID employee smart card), the
operator automatically access the store, locate the reserved
product, scan the product to confirm the matching with a
specific e-WO before picking it up (i.e. operator equipped
with RFID reader with embedded middleware
functionalities and products equipped with RFID tags)
(Figure 3, part (a)).
3. Once the verification is performed, the operator semi
automatically validates the transaction by associating a
specific e-WO with this specific product (Figure 3, part (b))
and posts the transaction into the ERP (Figure 3, part (c)).
4. As this transaction is posted, this triggers other
functions such as the automatic inventory adjustment in the
ERP in real time (Figure 3, part (c-1, c-2)). This could in
turn trigger more events such as sending a notification to
specific supply chain members on the stock movements.
5. Finally, as the operator exits the store, a notification
is sent to the ERP to notify the status of the employee.
The same logic could be used to follow the whole
process from power outage to reparation, giving the
organisation a better visibility on its mobile workforce
performance.
8. Conclusion
This study attempts to improve our understanding of
the impact of RFID technology on business processes by
trying to answer the following question: “How business
processes can be optimized using RFID technology?” In
term of practical implications, it is in line with recent
questions raised by [29] and [8] about RFID while these
authors are asking for models, theories, concepts,
frameworks, methods, techniques, and tools that are being
applied in practice, raising the importance on RFID
research to meet the needs of practitioners and managers?
Our results suggest that, when implementing RFID
technology at the store level, the visibility could allow
supply chain members to gather precise information on
real demand, thus enabling lean assembling at the
supplier’s level and optimizing the replenishment
procedures at the distribution center and at the store levels.
Also, in critical situations, as power outage minimum
downtime is a key issue, RFID technology seems to be a
relevant technology to increase the responsivess of
organization managing emergency situations. Moreover,
RFID technology still requires human intervention for
some activities. For example, the operator still has to select
the exact working order to match the specific product for
the billing of a project. More intelligent business rules
could have been configured in the middleware to avoid this
human intervention, but is it worth it? Indeed, each
scenario could lead to many possible configurations,
suggesting that use case scenarios and sensitivity analysis
should be carefully considered when selecting the proper
design (architecture options) for the virtual and hardware
components of RFID systems.
In reality, the exercise can be highly complicated, when
considering all the options for selecting (i) the proper
RFID systems vs. other AIDC systems (ii) the type of
wireless network, (iii) the level of integration with various
enterprise information systems modules, and with
eCommerce intra and inter organizational systems.
Moreover, beside trade off on functionality vs. costs
consideration, the selected configuration will heavily
depend on the decisions of different managers at the supply
chain level. This raises the issue of the identification and
selection of performance measurement that needs to be
shared among supply chain members in order to evaluate
the implementation of the retained scenario [3]. Indeed,
when building RFID-enabled scenarios, such performance
measures would enable managers to (i) evaluate and
control the performance of their resources, (2)
communicate these performance, and (iii) improve their
supply chain processes [28] by identifying gaps (between
"as is" situation and expectation) and point out at action for
improvements. Also, the integration of RFID
infrastructure with the existing enterprise information
systems at focal firm level and between supply chain
members could be a very challenging task and require a
high level of collaboration. The next logical step of this
research could be the investigation of the impact of RFID
on the supply chain members’ relationship?
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doc_779518224.pdf
This paper examines the case of one supply chain in the electricity sector where RFID technology integrated with firm’s information systems acts as an enabler of process optimization. Using a business process approach and laboratory simulation, we explain how the implementation of RFID technology can increase the visibility of information at various layers of the supply chain, allowing members to gather precise information on real demand and improve replenishment processes.
University of Wollongong
Research Online
Faculty of Informatics - Papers (Archive) Faculty of Engineering and Information Sciences
2008
Understanding the Impact of Emerging
Technologies on Process Optimization: Te Case
of RFID Technology
S. F. Wamba
University of Wollongong, [email protected]
Y. Bendavid
Polytechnic School of Montreal
Research Online is the open access institutional repository for the
University of Wollongong. For further information contact the UOW
Library: [email protected]
Publication Details
Tis conference paper was originally published as Wamba, SF & Bendavid, Y, of Emerging Technologies on Process Optimization: Te
Case of RFID Technology, 13th Asian-Pacifc Decision Sciences Institute Conference, 2-5 July, Brisbane, Queensland, Australia.
Original conference information available here
Understanding the Impact of Emerging Technologies on Process
Optimization: Te Case of RFID Technology
Abstract
Tis paper examines the case of one supply chain in the electricity sector where RFID technology integrated
with frm’s information systems acts as an enabler of process optimization. Using a business process approach
and laboratory simulation, we explain how the implementation of RFID technology can increase the visibility
of information at various layers of the supply chain, allowing members to gather precise information on real
demand and improve replenishment processes. On the other hand, while RFID technology has the potential
to automate some processes, human intervention is still required. Terefore, use case scenarios and sensitivity
analysis should be carefully considered when selecting the proper design (architecture options) for the virtual
and hardware components of RFID systems. Te choice of the appropriate confguration needs to be
integrated in the frm’s strategies and supply chain partner’s vision.
Keywords
RFID, business process, Lab, ERP
Disciplines
Business Administration, Management, and Operations | E-Commerce | Management Information Systems |
Physical Sciences and Mathematics | Technology and Innovation
Publication Details
Tis conference paper was originally published as Wamba, SF & Bendavid, Y, of Emerging Technologies on
Process Optimization: Te Case of RFID Technology, 13th Asian-Pacifc Decision Sciences Institute
Conference, 2-5 July, Brisbane, Queensland, Australia. Original conference information available here
Tis conference paper is available at Research Online: htp://ro.uow.edu.au/infopapers/714
Understanding the Impact of Emerging Technologies on Process Optimization:
The Case of RFID Technology
Samuel Fosso Wamba
1, 2, 3
[email protected] and Ygal Bendavid
1, 2
(1)
Academia RFID, 9916 Cote de Liesse, Montréal, QC, H8T 1A1, Canada
(2)
Department of Industrial Engineering, ePoly Center of Expertise in Electronic Commerce, École
Polytechnique de Montréal, Station Centre-Ville, C.P. 6079, Montreal, QC, H3C 3A7, Canada
(3)
School of Information Systems & Technology (SISAT), University of Wollongong, Wollongong
NSW 2522 Australia,
Abstract
This paper examines the case of one supply chain in the
electricity sector where RFID technology integrated with
firm’s information systems acts as an enabler of process
optimization. Using a business process approach and
laboratory simulation, we explain how the implementation
of RFID technology can increase the visibility of
information at various layers of the supply chain, allowing
members to gather precise information on real demand and
improve replenishment processes. On the other hand,
while RFID technology has the potential to automate some
processes, human intervention is still required. Therefore,
use case scenarios and sensitivity analysis should be
carefully considered when selecting the proper design
(architecture options) for the virtual and hardware
components of RFID systems. The choice of the
appropriate configuration needs to be integrated in the
firm’s strategies and supply chain partner’s vision.
1. Introduction
Over the past, RFID technology (Radio-Frequency
Identification) has attracted the attention of the scientific
community. This increasing interest can be ascertained
through various special issues on the topic in academic
journals such as International Journal of Production
Economics, Production and Operations Management,
IEEE Transactions on Automation Science and
Engineering, International Journal of Electronic Business
and Journal of Theoretical and Applied Electronic
Commerce Research. Following this trend, this paper
addresses the case of one supply chain in the electricity
sector with emphasis on internal customers in charge of the
power grid maintenance and operation. The main objective
of the paper is to explain how RFID technology integrated
with firm’s information systems can act as an enabler of
process optimization and enhance the efficiency of a
supply chain.
Section 2 presents RFID technology. In section 3, a
literature review is presented with regards to supply chain
optimization integrating RFID technology, followed in
section 4 by an evaluation of the business value of
information technology. In Section 5 the context of the
study is presented followed in section 6, by the research
design where the business process approach and laboratory
simulation are presented. In section 7, selected RFID
enabled scenarios are discussed in terms of process
optimization. Lastly, the conclusion and future research
are presented in section 8.
2. RFID Technology
RFID technology is a wireless automatic identification
and data capture (AIDC) technology (see [16]). A basic
RFID system is composed of a tag containing a
microprocessor, a reader and its antennas, and a computer
equipped with a middleware program, in which business
rules are configured to automate some decisions [2]. The
tag, which is generally attached to a product,
communicates through radio frequencies with the reader’s
antennas. The reader sends the location and unique
identification of the product to a computer. When this
information is routed to specific enterprise information
systems (e.g. Enterprise Resource Planning Systems-ERP,
Warehouse Management Systems-WMS), automated
transactions can be performed such as reject unplanned
receipts, directly enter receipt into computers, compare
ASN (Advance Shipping Notice) for inbound deliveries,
etc.
Beside some standards and technological limitations
such as the read rate, data reliability, lack of unified
standards, high costs associated to the technology
(hardware and software), security issues (i.e. data access,
privacy and legislation) [4], RFID technology presents
many advantages over other AIDC (Automatic
Identification and Data Capture) technologies such as (i)
simultaneous multiple readings, (ii) no line of sight
requirements, (iii) read and write capabilities, longer read
range, etc. While RFID technology is considered
promising, there are still many questions concerning its
adoption [8], specifically in the ways its real potential can
be delivered. Therefore, the objective of this paper is to
demonstrate “how business processes can be optimized
using RFID technology”.
3. Literature Review on RFID Impact in the
Supply Chain
Previous works on RFID impacts in supply chain
context is still scarce, but represent a burgeoning area of
research. Most recent papers can be classified in four main
areas: conceptual papers, simulation modeling and
mathematical papers, articles with empirical results from
laboratory and from field studies.
For instance, among the conceptual papers, [18]
suggest that RFID may facilitate the development of
emerging supply chain configuration by acting as an
enabler of a build-to-order supply chain management
strategy. In the same vein, [25] and [31] suggest that RFID
may facilitate supply chain collaboration practices and
may constitute a link to more collaborative approaches
such as CPFR (collaborative planning, forecasting and
replenishment). [23] examine how RFID technology can
act as an enabler of traceability in the food supply chain.
The authors also outline an “information data model” for
supporting traceability information modeling and an EPC
(Electronic Product Code) based system architecture to
indicate how to deploy the solution across a supply chain.
While exploring the impacts of RFID in a retail supply
chain, [25] and [15] also identify the emergence of
“intelligent processes” to support RFID enabled B-to-B
e-commerce applications.
When considering simulation modeling and
mathematical papers, authors have used various models to
assess the impact of RFID on supply chain performance.
For instance, [17] developed some “mathematical
frameworks” to evaluate quantitatively the impact of RFID
technology in various aspects of supply chain management.
Indeed the author looks at (i) the costs and incentive issues
in a supply chain implementation (ii) the added value of
information visibility in the supply chain, and (iii) the
benefits of implementing RFID technology in an assembly
environment. For instance, when considering the
improvement of inventory control policies through the use
of RFID, the author found that replenishment decisions
“overall cost improvement is in the range of 2.8 to 4.5%
with product progress information accounting for 47% to
65% of the cost savings” [17 p 15, 68]. Based on the six
“fundamental operation (business) models” found in the
Taiwan's printing industry [21] carried out a quantitative
benefit analysis for RFID applications in different supply
chain activities and presented the impact at various supply
chain levels. For example, when considering quantitative
cost and benefit analysis at the retailer level, the proposed
item tagging mechanism can save multiple working days
per year, and stock checking could be accomplished within
one hour instead of several days when compared with bare
codes. [14] used simulation as research method to study
the impact of several factors that cause inventory
inaccuracy (e.g. theft, unsaleables, misplaced items,
incorrect deliveries) on a number of monetary (e.g. cost
components that are affected by the factors that cause
inventory inaccuracy) and non monetary (i.e. inventory
inaccuracy, out-of-stock) supply chain performance
measures within a retail supply chain. Their results
indicate that eliminating inventory inaccuracy can reduce
supply chain cost as well as the level of out-of-stock, and
that RFID technology could greatly contribute to this
issue.
With respect to articles with empirical results from
laboratory studies, [16] explore the impact of RFID
technology and the EPC Network on mobile B2B
e-commerce in a retail supply chain. The authors point out
some major impacts in terms of (i) business and
operational process reengineering, (ii) IT infrastructure
requirements, (iii) information sharing/synchronization
between SC members, (iv) human and physical resource
utilization, and finally, (v) strategy redefinition. [4]
explore the impact of RFID technology in a five layer
supply chain in the utility industry. The authors indicate
that “open loop RFID implementation” could drastically
benefit to all supply chain members. Based on selected
RFID-enabled scenarios, they suggest multiples areas of
impacts such as (i) a better “asset utilization” (e.g. fleet
management by the transportation company, assembling
lines at the supplier level), without compromising (ii) the
“quality of service” provided by the operators, (iii) major
benefits in terms of “inventory management” at all the
supply chain levels, with the possibility to be provided
with real time inventory updates that was translated in
terms of millions, etc.
Finally, among articles with empirical results from field
studies, other recent studies such as those proposed by [27]
and [20] examine the influence on RFID technology on
emerging applications in the retail supply chains. More
specifically, [27] investigated the pilots conducted at the
Metro group in Germany, and found that the RFID
technology contributed to a reduction in out-of-stock by 9
to 14%, as compared to the preceding year, while
optimizing store space by about 11%. [20] conducted an
independent study at “Wal-Mart RFID-enabled stores”
over a period of 29 weeks. They found similar impacts
with RFID enabled stores being 63% more effective in
replenishing out-of-stocks than stores without RFID,
which can be translated into a reduction of out-of-stocks by
16%. [26] also examine the results of a joint RFID pilot
project conducted between Kaufhof Department Stores, a
leading European retailer and Gerry Weber, a fashion
merchandise manufacturer. Following the pilot, the
companies could observe time savings in moving
merchandise through the supply chain, lower labor costs in
existing processes, higher data quality and new service
offering possibilities. The authors also lay emphasis on
“data, about processes, product movement, and even
customer behaviour (…) that can be used for proprietary
and distinctive capabilities to gain competitive advantage
(if) turned into understandable and usable ‘content’”.
Again, previous studies suggest that RFID technology
is part of a broader system where automated data capture
has little value unless translated into business intelligence.
4. Evaluating the Business Value of
Information Technology
According to comparative analysis of worldwide IT
spending that have been aggregated by eMarketer, analysts
indicate a steady increase from 4% to 8% over the years
with sharpest growth is Eastern Europe and other
developing countries [11]. The global ICT spending was
expected to reach $2.86 trillion in 2005 with the US
market alone accounting for 39.6% of the worldwide
market spending. In the specific case of RFID technology,
analysts predict a $5.29 billion RFID market in 2008, with
an increase of almost 7.3% over the previous years.
Forecasts indicate that RFID spending will double before
2012 [22]. Other sources evaluate RFID annual growth
rates are over 23% [7]. These growing investments in IT
are pressuring many academics and practitioners to seek
for economic justification as “more than ever IT
executives encounter the justification issue due to senior
management’s insistence that the investment be properly
utilized” [9, p. 273]. The literature on the evaluation of
business value of IT can be classified into two main
categories, namely the production-economics based
approach and the process-oriented approach [33].
Respectively, studies in the first category use
production functions to study the relationship between IT
investments and productivity at the firm level, while
studies in the second category try to assess the impact of IT
investments on specific processes [30].For instance, by
adopting a production-economics based approach [5],
showed considerable return in IT investments at the firm
level in terms of cost savings, quality of service
improvement and better customer service. However, as
noted by [30, p. 200] the impacts of IT investments are
“perhaps better observed at the process level (versus the
firm level)”. Indeed, when the process approach is used to
assess the impacts of IT investments, other factors that
affect the translation of these investments into impacts are
investigated more obviously [24]. The process-oriented
approach has been used by various researchers to assess
the impact of IT (e.g. [13][25]), and it has been considered
as the best approach to study the impact of IT at a more
exhaustive level [6].
5. Context of the Study
In the utility context, the adoption of RFID technology
is still at its early stages and the use of this technology are
under preliminary investigation, mainly due to the
“technology push” from technology suppliers, as well as
competitive market conditions that create pressure toward
supply chain optimization solutions. In fact, today, the
world energy production is driven by demand with the
global energy consumption that has been rising over the
past three years at an annual average rate of 4.2% and is
expecting to rise in the years to come, with Asia and
Australasia (excluding Japan) which are expected to
consume almost as much energy as North America by 2009
[10]. In Canada, the energy sector accounts for nearly 6%
of GDP, which represents 1.9% of the labor force (327,000
jobs) and has been a major engine of growth in recent
years). Beside crude oil, natural gas, coal and uranium,
Canada is a major producer of electricity in the world (the
fifth largest producer of energy in the world), which
accounts for 9% of its total energy output. In this sector,
the country benefits from low-price electricity as
hydroelectric generation is the most important source of
electricity supply, accounting for 60% of the total
electricity output [10]. Owing to the abundance of energy,
the size of its territory, the rigor of its climate and the high
level of industrialization of its economy, Canada ranks
among the most intensive consumers of energy.
Nevertheless, Canada’s energy output exceeds domestic
needs from far, and the surpluses are exported in the US
which is its major client [12].
Since 1997, following a restructuring of the North
American market initiated by a deregulation opening the
markets to competition, utility industry has undergone
significant changes, with the entrance of important
competitors specializing in the production and trading of
electricity and other forms of energy. This phenomenon
has pushed industry members to rethink some of their
strategies and revise their business practices. In this
context, while supply chain applications at a strategic level
(e.g. strategy definition, supplier relationship management,
contractual logistic management) have been considered as
a rich area of opportunity for cost reduction [19], this
article focuses more on the operational aspects of supply
chain management. For instance, activities such as power
grid maintenance and mobile field service have also been
identified as having important effect on cost savings and
level of service improvement [32]. It is along this
continuum of electronic platforms (e.g. ERP, electronic
marketplaces) and IOS adoption, that utilities are now
looking toward emerging technologies such as RFID to
drive transaction cost reductions.
6. Methodology
This paper is part of a larger study conducted to
improve our understanding of RFID technology in a
supply chain context. The business process approach and
laboratory simulation are selected as they proved to be
relevant in order to assess the impacts and potential
benefits of RFID technology (e.g. [25][16]).
6.1 Research Sites
The investigated utility supply chain consists of: (i) a focal
firm (Firm A), one of its strategic first-tier suppliers (Firm
B), and one of its internal customers (Firm C). Firm A is a
major player in the utility industry (electricity) in North
America. As managers from Firm A indicated, among their
primary motivation toward RFID technology adoption, the
power grid maintenance and operations (repair) were key
areas of potential improvements. Firm A owns two major
distribution centers (DCs) and receives thousands of
products (namely overhead distribution transformers)
every year, of which 15 thousand are considered strategic
components of its power supply infrastructure. These
products which were selected in the study are distributed in
90 stores disseminated in a vast territory. Following a
power outage, missing one product could have a serious
impact on network down time. Therefore, optimizing
product replenishment at specific stores (level) and
automating the picking process at the store location were
identified as critical activities.
6.2 Data Collection
For this study, both qualitative and quantitative data
were collected using (i) on-site observations, (ii)
interviews and (iii) joint working session with industrial
partners in laboratory settings.
1. On-site observations were conducted in all research
sites involved in this study. The main objective of on-site
observations was to map the current intra- and
inter-organizational business processes (As-Is) related to
the chosen product value chain. This was done using a
Business Process Analysis tool (ARIS Toolset) at various
stages of the research. The ARIS Toolset is a Business
Process Analysis (BPA) tool used for global definition,
mapping, analysis, optimization and implementation of
business processes. It helps to make “quick decisions
about the management of e-business processes, by
providing realistic simulations of resource utilisation,
activity-based cost calculations, as well as web-based
communication of modelled and optimised company
processes” [1, p. 1].
2. Interviews were conducted with a semi-structured
questionnaire to complement to observations and gather
more information on specific business processes.
3. Joint working sessions where conducted with key
respondents from each firms to identify critical processes
to be redesigned while integrating RFID technology The
resulting RFID-enabled B2B e-commerce scenarios,
therefore, had to be validated by ERP consultants and
RFID solution providers and, most importantly, by a
middleware provider in order to ensure their technical
feasibility. This iterative approach allowed refining the
scope of the simulation in laboratory settings (see the
RFID laboratory in figure 1).
6.3 RFID Laboratory
The laboratory where RFID-enabled B2B e-commerce
scenarios were simulated is presented in figure 1.
On the left side, an RFID portal represents the
supplier’s shipping dock including:
• Photo eye (1) for automatic product detection and
trigger to activate two fixed antennas (2). This procedure
allows the antennas to be awakened and transmits radio
waves only where necessary.
• These two antennas are connected to a fixed reader
(3) that captures the information written on the tags (4).
• A stack light (5) linked to this reader allows the
confirmation of the status of the readings as the products
(or boxes) are passing on the conveyor belts (6).
• On the right side of figure 1 of an RFID portal
represents a customer’s receiving dock (7) with technical
consideration similar to that of the shipping dock.
• Based on each specific business cases, other
technological options could be considered such as
mounted RFID fork lift or handheld RFID gun.
• The third part of the laboratory is composed of the
ERP and middleware servers where all the business rules
are configured (8). While the new generations of readers
allow “built in intelligence”, in the case of these pre-pilot
experiments, business rules where configured in the
middleware.
• For the purpose of the demo, OMS from Ship2save
was used at the supplier location (simulated environment),
and Catamaran (provided by Hewlett Packard and
Shipcom Wireless) was used at the client location
(simulated environment). The integration of these two
middleware was facilitated with pre-configured bridges.
Because of the scope of this paper, our discussion will only
emphasize on the results obtained within Catamaran.
• Ultimately, the last components are the three screens
on the walls (9), where all the information resulting from
transactions is projected, allowing participants to follow
the information flow in real time, as each transaction is
automatically performed.
• Moreover, complementary devices such as mobile
RFID reader (i.e. RFID gun) were used, to allow real time
access to the middleware in order take action while being
on the move.
7. RFID-Enabled Scenarios
In this study, we have adopted a “store” perspective in
conformity with the indication of firms A managers on
targeted critical activities. This focus enables researchers
to understand HOW the work would be carried out within
one store as a power grid operator would handle an
electronic working order (eWO) in order to fix a power
outage.
The EPC (Event-driven Process Chains) formalism
was used as a common language between all the project
stakeholders for the participants to fully understand the
impacts of implementing RFID technology on selected
processes. The EPC formalism allows a logic
representation of activities within and between processes.
An interesting aspect of the EPC formalism is that it
highlights all the events that trigger the activities and the
resulting sequence of events; suggesting that a process can
be seen as a chain of events and functions (i.e. an activity
which needs to be performed). Moreover, the modeling of
a business process using EPC formalism uses three types
of logical connectors to indicate the workflow between
activities and events, mainly the “^” (i.e. and), “v”(i.e. or)
“XOR” (i.e. exclusive or). In addition to the basic
representation of a process using EPC formalism, it is
possible to assign responsibilities (i.e. employee) to a
specific function, allocate a system which is used to
perform the function (e.g. ERP, RFID middleware),
indicate information inputs and outputs (e.g. RFID data)
specify some business rules, assign them to logical
connectors and quantify their probabilities of occurrence.
7.1 Simulated Scenarios in the Laboratory
Today, when a power outage occurs, the operators have
to call a maintenance center for identifying the closest
remote store where required products (e.g. transformers)
are available in order to proceed with their picking before
to go on the site for repairing the power grid. However,
because of store management issues, a store manager has
to be assigned for opening the store, providing operators
with the products and filling up the documentation. An
alternative approach being used is a permanent store
manager assigned to a specific store.
Indeed, if multiple stores can constitute critical
inventory buffer areas between remote locations and
distribution centers, the current situation is rather costly
and inefficient. Therefore, a redesigned process
integrating RFID technology was proposed and validated
in laboratory settings. The simulated scenario represents
the automatic “access” to a remote store for the “automatic
picking” of a “specific product” in order to fix a power
outage that just occurred (Figure 2).
1
2
3
5
6
7
8
9
4
1
2
3
5
6
7
8
9
4
Figure 1: ePoly RFID –ERP Laboratory
(a) Select the e-Work Order (b) Read the RFID Tag on the selected product (c) Post the transaction to the ERP
(c-1) Actual Store Inventory (c-2) Atomated real time inventory update
(a) Select the e-Work Order (b) Read the RFID Tag on the selected product (c) Post the transaction to the ERP
(c-1) Actual Store Inventory (c-2) Atomated real time inventory update (c-1) Actual Store Inventory (c-2) Atomated real time inventory update
Figure 3: Steps related to automated picking in a store
Semi automatically
associate the product
with the e-WO
Stock movement
notified
Operator ID
accepted
Product match
Operator IDnot
accepted
Supplier Notified
Product does not
match
Automatically notify
stock movement and
pass transaction in
ERP
Semi automatically
read RFIDtags on
the product(s)
Automatically adjust
the inventory at the
specific location
Field Operator
automatically
identified
Go to specified
location (for
product picking)
e-Working Order
(e-WO) sent
Automatically
Receive e-WO
Arrived at the
store
Locate
Product(s)
Middleware
Middleware
Product picked
up
Middleware
Middleware
Field Operator
Field Operator
Field Operator
Pick up the product and
exit store
SAP - MM
SAP-RH
Mobile Device
SAP - MM
e-WOreceived
SAP - MM
RFIDsmart Card (ID)
Field Operator
identified
Access
automatically
authorized
Middleware
SAP-RH
Access
authorized
RFIDtag
e-WOassociated with
Operator IDand product
ID
On hand Inventory
adjusted
RFIDtags read
Middleware
SAP - MM
Stock movement
Middleware
SAP - MM
SAP - MM
ACCPAC - ERP
e-Working Order
Read automatically the
Operator ID
Stock movement notification
DC notified (based on
predetermined
business rules)
Internet
RFIDentry card
automatically read
RFIDsmart Card (ID)
e-Working Order
e-Working Order
Mobile Device
Product(s)
loxated
Field Operator
RFIDtag
Stock movement
Automatically notify
the DC for
replenishment
procedure (if required)
Automatically notify
the supplier for
replenishment
procedure (if required)
Stock movement notification
Go to power
outage
e-Working Order
Read automatically
the Operator ID
RFIDsmart Card (ID)
Access
authorized
Middleware
SAP-RH
Operator movement notification
= AND = OR = XOR
X
System
Human
ressource
Electronic Document
Event Function
Figure 2: Simulated RFID-enabled scenario
7.2 Discussion
The following course of actions is triggered by an
electronic working order (e-WO) sent to an operator in
order to fix a power outage that has just occurred.
More precisely, the following steps can summarize the
scenario simulated (Figure 2) in laboratory:
1. When the e-WO is received, the operator can
directly access the ERP from the field, using a wireless
device (i.e. PDA), check product availability in the
inventory and reserve the required product at the closest
store.
2. When the product arrives at the store, by automating
its identification (i.e. RFID employee smart card), the
operator automatically access the store, locate the reserved
product, scan the product to confirm the matching with a
specific e-WO before picking it up (i.e. operator equipped
with RFID reader with embedded middleware
functionalities and products equipped with RFID tags)
(Figure 3, part (a)).
3. Once the verification is performed, the operator semi
automatically validates the transaction by associating a
specific e-WO with this specific product (Figure 3, part (b))
and posts the transaction into the ERP (Figure 3, part (c)).
4. As this transaction is posted, this triggers other
functions such as the automatic inventory adjustment in the
ERP in real time (Figure 3, part (c-1, c-2)). This could in
turn trigger more events such as sending a notification to
specific supply chain members on the stock movements.
5. Finally, as the operator exits the store, a notification
is sent to the ERP to notify the status of the employee.
The same logic could be used to follow the whole
process from power outage to reparation, giving the
organisation a better visibility on its mobile workforce
performance.
8. Conclusion
This study attempts to improve our understanding of
the impact of RFID technology on business processes by
trying to answer the following question: “How business
processes can be optimized using RFID technology?” In
term of practical implications, it is in line with recent
questions raised by [29] and [8] about RFID while these
authors are asking for models, theories, concepts,
frameworks, methods, techniques, and tools that are being
applied in practice, raising the importance on RFID
research to meet the needs of practitioners and managers?
Our results suggest that, when implementing RFID
technology at the store level, the visibility could allow
supply chain members to gather precise information on
real demand, thus enabling lean assembling at the
supplier’s level and optimizing the replenishment
procedures at the distribution center and at the store levels.
Also, in critical situations, as power outage minimum
downtime is a key issue, RFID technology seems to be a
relevant technology to increase the responsivess of
organization managing emergency situations. Moreover,
RFID technology still requires human intervention for
some activities. For example, the operator still has to select
the exact working order to match the specific product for
the billing of a project. More intelligent business rules
could have been configured in the middleware to avoid this
human intervention, but is it worth it? Indeed, each
scenario could lead to many possible configurations,
suggesting that use case scenarios and sensitivity analysis
should be carefully considered when selecting the proper
design (architecture options) for the virtual and hardware
components of RFID systems.
In reality, the exercise can be highly complicated, when
considering all the options for selecting (i) the proper
RFID systems vs. other AIDC systems (ii) the type of
wireless network, (iii) the level of integration with various
enterprise information systems modules, and with
eCommerce intra and inter organizational systems.
Moreover, beside trade off on functionality vs. costs
consideration, the selected configuration will heavily
depend on the decisions of different managers at the supply
chain level. This raises the issue of the identification and
selection of performance measurement that needs to be
shared among supply chain members in order to evaluate
the implementation of the retained scenario [3]. Indeed,
when building RFID-enabled scenarios, such performance
measures would enable managers to (i) evaluate and
control the performance of their resources, (2)
communicate these performance, and (iii) improve their
supply chain processes [28] by identifying gaps (between
"as is" situation and expectation) and point out at action for
improvements. Also, the integration of RFID
infrastructure with the existing enterprise information
systems at focal firm level and between supply chain
members could be a very challenging task and require a
high level of collaboration. The next logical step of this
research could be the investigation of the impact of RFID
on the supply chain members’ relationship?
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