how systems engineers think (a message for healthcare professionals)
TRANSCRIPT
7/25/2019 How Systems Engineers Think (a Message for Healthcare Professionals)
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(A Message for Healthcare Professionals)
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Shi-Jie (Gary) Chen, Ph.D.
Industrial and Systems Engineering
Northern Illinois University
Engineers Make Things.
Industrial and Systems Engineers Make Things Better
ISYE is not design an object, but in a sense design how
a business or industry will be run
ISYE is the study of applying scientific, mathematical
and computer techniques to design, model, analyze and
improve complex systems (i.e., manufacturing, service,
healthcare, transportation, government, etc.)
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Production
Planning
and Control
Prototyping
Process
Planning
QualityControl
Product
Design
Engineering
Analysis
Market
Analysis
R&D
Computer
Aided
Design
(CAD)
Computer
Aided
Manufacturing
(CAM)
Rapid
Prototyping
(RP)Computer
Aided
Engineering
(CAE)
Computer
Aided Process
Planning
(CAPP)
Computer
Aided Quality
Control
(CAQC)
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Business Strategy
Marketing StrategyOperations StrategyFinance Strategy
Operations
Management
People Plants Parts Processes
Planning and Control Systems
Production System
Input
Materials
Customers
Output
Products
Services
(Scrap & Waste)
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Time
D e m a n d
Time
D e m a n d
Time
D
e m a n d
Random Trend
Seasonality
(Cycles)Seasonality + Trend
D
e m a n d
Time
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Objective
Forecasting
WMA DES
Exponential
Smoothing
Moving
Average
Time Series
Methods
Causal
Models
Regression
Analysis
Seasonal
Factors
ES
Linear
Regression
o
Trend
Seasonality
rend
Trend
Cycle
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Business Strategy
Marketing StrategyOperations StrategyFinance Strategy
Operations
Management
People Plants Parts Processes
Planning and Control Systems
Production System
Input
Materials
Customers
Output
Products
Services
(Scrap & Waste)
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T
t
t S t U t Ot Rt I t F t H S cU cOc P c I c F c H c
1
Minimize
Subject to:
Wt = Wt-1 + Ht – Ft for 1 t T (workforce) (A)
It = It-1 + Pt + St – Dt for 1
t
T (inventory) (B)Pt = K nt Wt + Ot – Ut for 1 t T (production) (C)
Ht, Ft, It, Ot, Ut, St, Wt, Pt ≥ 0 (non negativity) (D)
Ot Ut = 0 for 1 t T (rounding)
Ht Ft = 0 for 1 t T (rounding)
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Business Strategy
Marketing StrategyOperations StrategyFinance Strategy
Operations
Management
People Plants Parts Processes
Planning and Control Systems
Production System
Input
Materials
Customers
Output
Products
Services
(Scrap & Waste)
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Business Strategy
Marketing StrategyOperations StrategyFinance Strategy
Operations
Management
People Plants Parts Processes
Planning and Control Systems
Production System
Input
Materials
Customers
Output
Products
Services
(Scrap & Waste)
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Market
Analysis
R&D
Computer AidedDesign (CAD)
Underbody_Sub
RoofFix
UB_Complet_ sm
Dash_Sub4
UB_Dash_Asm
BIW Ctr_Roof_Bowr_Roof_Bow Rr_Roof_Bow
Roof_Panel
HydroForm_Sub
B S_ Su b _R T B S_ Su b _L t
Frame_Fx
UB_Complet_Fx
UB_Fx
Dash_Sub3 Pnl_Cowl_Bar DashSub4Fx
Dash_Sub1 Dash_Sub3_Fx Dash_Sub2
Pt1 Pt2 Pt3 Pt4 Pt5 Dash_Sub1 _F x P t6 P t7 P t8 D as h_ Su b2 _F x
BS_Sub4_Rt BS_Sub5_Fx BS_Sub3_Rt
BS_Sub1_Rt BS_Sub2_Rt BS_Sub4_Fx
Pt21 Pt22 BS_Sub3_FxPt15 P t16 P t17 BS_Sub1_Fx
Pt18 Pt19 Pt20 BS_Sub2_Fx
Warren Truck
Underbody_Sub
RoofFix
UB_Complet_ sm
Dash_Sub4
UB_Dash_Asm
BIW Ctr_Roof_Bowr_Roof_Bow Rr_Roof_Bow
Roof_Panel
HydroForm_Sub
B S_ Su b _R T B S_ Su b _L t
Frame_Fx
UB_Complet_Fx
UB_Fx
Dash_Sub3 Pnl_Cowl_Bar DashSub4Fx
Dash_Sub1 Dash_Sub3_Fx Dash_Sub2
Pt1 Pt2 Pt3 Pt4 Pt5 Dash_Sub1 _F x P t6 P t7 P t8 D as h_ Su b2 _F x
BS_Sub4_Rt BS_Sub5_Fx BS_Sub3_Rt
BS_Sub1_Rt BS_Sub2_Rt BS_Sub4_Fx
Pt21 Pt22 BS_Sub3_FxPt15 P t16 P t17 BS_Sub1_Fx
Pt18 Pt19 Pt20 BS_Sub2_Fx
Warren Truck
Convert customer
need to function
of each part
Convert to design
specification
Design Principles
for quality and
productivity
Computer Aided Engineering (CAE)
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Cost of
having too
little
Cost of
having too
much
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If annual demand λ is 12,000 units:
Option 1
12,000
Jan. Dec.
Q -λ
T
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If annual demand λ is 12,000 units:
Option 2
12,000
Jan. Dec.
Q -λ
T
1,000
18
h
K 2Q
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Business Strategy
Marketing StrategyOperations StrategyFinance Strategy
Operations
Management
People Plants Parts Processes
Planning and Control Systems
Production System
Input
Materials
Customers
Output
Products
Services
(Scrap & Waste)
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F
G
E
A
D
B
C
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Task A B C D E F G H I J K L Task B C A K L J F I E D H GA B
B C
C A
D K
E L
F J
G F
H I
I E
J D
K
H
L G
(a) Original binary matrix (unpartitioned) (b) Reordered binary matrix (partitioned)
Dependent tasks}
Independent tasks}
}Interdependent
tasks
} Interdependent
tasks
From From
To To
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Business Strategy
Marketing StrategyOperations StrategyFinance Strategy
Operations
Management
People Plants Parts Processes
Planning and Control Systems
Production System
Input
Materials
Customers
Output
Products
Services
(Scrap & Waste)
Organization A
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Customer wants
detergent and goes
to Jewel
P&G or other
manufacturer
Jewel or third
party DC/WH
Jewel
Supermarket
Chemicalmanufacturer
(e.g. Oil Company)
Paper
Manufacturer
Timber
Industry
Plastic
Producer
Tenneco
Packaging
Chemical
manufacturer
(e.g. Oil Company)
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F
G
E
A
D
B
C
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Or . A B C D E F G H I J K L Or . B C A K L J F I E D H GA B B C C A D K E L F J G F H I I E J D K
H
L G
(a) Original binary matrix (unpartitioned) (b) Reordered binary matrix (partitioned)
Dependent organizations }
Independent organizations }
} Interdependent
organizations
} Interdependent
organizations
From From
To To
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7/25/2019 How Systems Engineers Think (a Message for Healthcare Professionals)
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Patient Safety
◦ Medication inventory control and safety stock levels
◦ Medication delivery analysis and improvement including
prescribing, transcribing, dispensing, administering, and
monitoring
◦ Human factors engineering (e.g., human-machine systems,
human error, auditory and visual systems)
◦ Information systems and technology (e.g., EMR, CPOE, auto
dispensing machine, etc.)
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Operations Efficiency
◦ Medication supply chain management (e.g., external supply
chain and internal supply chain)
◦ Systems/process improvement in emergency department,
operating rooms, intensive care unit, pharmacy,
medical/surgical unit, etc.◦ Systems analysis of patient flow, medication flow, work/task
flow, information flow, etc.
◦ Queuing and patient waiting time analysis
◦ Facilities planning and layout design
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Quality and Customer Satisfaction
◦ Six sigma and quality management program (e.g.,
patient service quality monitoring, DMAIC cycle for
problem solving and continuous improvement)
◦ Statistical process control
◦ Scheduling of nurses, surgical teams, operating
rooms, outpatients, etc.
◦ Capacity planning and resource allocation (e.g., demand
forecasting, staffing, beds allocation, etc.)
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