Part 1.pdf __MACOSX/._Part 1.pdf Part 2.pdf __MACOSX/._Part 2.pdf Part 3.pdf __MACOSX/._Part 3.pdf Part 4.pdf __MACOSX/._Part 4.pdf Definitions Term Definition Access A means of approaching, entering, exiting, communicating with, or making use of: used a browser to access a website; accessed her bank account online. Authentication To positively verify the identity of a user, device, or other entity in a computer system, often as a prerequisite to allowing access to resources in a system. Connection A communications link between two points: Established a connection to the Internet. Customer One that buys goods or services. Data Distinct pieces of digital information. Data is usually formatted in a specific way and can exist in a variety of forms, such as numbers, text, etc. When used in the context of transmission media, data refers to information in binary digital format. Device A device is a unit of physical hardware or equipment that provides one or more computing functions within a computer system. It can provide input to the computer, accept output or both. A device can be any electronic element with some computing ability that supports the installation of firmware or third-party software. DSL Digital Subscriber Line or Digital Subscriber Loop. Refers to the variety of different types of Digital Subscriber Line protocols – high-speed data transmission protocols that are compatible with regular copper telephone wire. DSL is typically used to provide a continuous, high-speed connection directly to an Internet Service Provider Email Electronic mail. A service that sends messages on computers via local or global networks. Home network A local area network (LAN) that connects the PCs in a home and lets users access the Internet simultaneously, share drives, share files and printers, and play head-to-head multi-player games. Internet A network of networks; a group of networks interconnected via routers. The Internet (with a capital I) is the world's largest internet. Internet Access Access to the Internet via a dial-up account via telephone circuit or direct connection. Internet Protocol (IP). The IP part of TCP/IP; the protocol used to route a data packet from its source to its destination over the Internet. IP Address The unique 32 bit number assigned to each computer connected to the Internet and used by the TCP/IP protocol to route packets of data to their destinations. The number is usually written in shorthand "dotted octet" notation in which the 32 bit address is grouped into four sets of 8 bits. Each of those eight-bit sets is converted into a decimal number, and the four resulting decimal numbers are written separated by dots. Most Internet addresses consist of a network portion and a node portion. The address for a host must be unique on the network. When you connect to a web server, for example, you may tell your browser to connect to www.mysite.com, but your computer ultimately has to translate the name to its IP .

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Definitions
Term
Definition
Access
A means of approaching, entering, exiting, communicating with,
or making use of: used a browser to access a website; accessed

2. her bank account online.
Authentication
To positively verify the identity of a user, device, or other
entity in a computer system, often as a prerequisite to allowing
access to resources in a system.
Connection
A communications link between two points:
Established a connection to the Internet.
Customer
One that buys goods or services.
Data
Distinct pieces of digital information. Data is usually formatted
in a specific way and can exist in a variety of forms, such as
numbers, text, etc. When used in the context of transmission
media, data refers to information in binary digital format.
Device
A device is a unit of physical hardware or equipment that
provides one or more computing functions within a computer
system. It can provide input to the computer, accept output or
both. A device can be any electronic element with some
computing ability that supports the installation of firmware or
third-party software.
DSL
Digital Subscriber Line or Digital Subscriber Loop. Refers to
the variety of different types of Digital Subscriber Line
protocols – high-speed data transmission protocols that are
compatible with regular copper telephone wire. DSL is typically
used to provide a continuous, high-speed connection directly to
an Internet Service Provider
Email
Electronic mail. A service that sends messages on computers via
local or global networks.
Home network
A local area network (LAN) that connects the PCs in a home
and lets users access the Internet simultaneously, share drives,
share files and printers, and play head-to-head multi-player

3. games.
Internet
A network of networks; a group of networks interconnected via
routers. The Internet (with a capital I) is the world's largest
internet.
Internet Access
Access to the Internet via a dial-up account via telephone
circuit or direct connection.
Internet Protocol
(IP). The IP part of TCP/IP; the protocol used to route a data
packet from its source to its destination over the Internet.
IP Address
The unique 32 bit number assigned to each computer connected
to the Internet and used by the TCP/IP protocol to route packets
of data to their destinations. The number is usually written in
shorthand "dotted octet" notation in which the 32 bit address is
grouped into four sets of 8 bits. Each of those eight-bit sets is
converted into a decimal number, and the four resulting decimal
numbers are written separated by dots. Most Internet addresses
consist of a network portion and a node portion. The address for
a host must be unique on the network. When you connect to a
web server, for example, you may tell your browser to connect
to www.mysite.com, but your computer ultimately has to
translate the name to its IP address, 109.208.000.1, before the
connection can be made
Network
A group of interconnected computers, including the hardware
and software used to connect them.
Remote
At a distance; in communications, referring to a system,
application, or device that must be accessed through a network.
Contrast local.
Router
An interconnection device that is similar to a bridge but serves
packets or frames containing certain protocols. Routers link
LANs at the network layer. A device that finds the best path for

4. a data packet to be sent from one network to another. A router
stores and forwards electronic messages between networks, first
determining all possible paths to the destination address and
then picking the most expedient route, based on the traffic load
and the number of hops. A router works at the network layer
(layer 3 of the OSI model); a bridge works at the data link layer
(layer 2). A router does more processing than a bridge does. A
router can be hardware or a combination of hardware and
software.
Service agreement
A contract between a service provider and a customer that
specifies what services the service provider will furnish
Software
Software is the program or set of programs that tell a computer
what to do. Hardware is the physical part of a computer system;
the machinery and equipment.
Vaild
Having legal force; effective or binding
Validated
To declare or make legally valid.
Wireless
Transmission via radio waves or satellite
Running head: BUSINESS ARCHITECTURE PROPOSAL FOR
SMART HOMES, INC. 1
4
22
BUSINESS ARCHITECTURE PROPOSAL FOR SMART
HOMES, INC.

5. Table of Contents
Executive Summary 3
Proposal Overview 4
Proposal Criticality 4
Approach 5
Proposal Scope 6
Key Stakeholders 7
Opportunities 8
Business Architecture Requirements 8
Business Architecture Design 10
Registration System 10
Monitored Data System 13
Remote Connection System 14
Smart Thermostat System 16
Internal View of the Organization 18
Smart Thermostat Business Rules 20
Registration System Business Rules 21
Monitored Data System Business Rules 22
Remote Connection System Business Rules 22
Smart Thermostat Business Rules 23
References: 23
Executive Summary
Smart Home products are expected to see dramatic growth over
the next few years with the evolution of the mobile network
infrastructure. Market research shows that app and cloud
services are paving the way for a more enhanced home
monitoring. In order to capitalize on this opportunity we submit
the proposal for a business architecture supporting Smart
Homes, Inc. In order to capitalize on this opportunity we submit
the proposal for a business architecture supporting Smart
Homes, Inc. This proposal will focus on the new smart home
thermostat product and registration system that will be used to
collect Smart Home thermostat information. This proposal will
include recommendations for establishing a cohesive product
launch and include all goals, processes, methods, resources and

6. time required to guarantee stakeholder satisfaction.
Proposal Overview
A&B Consulting was approached by Smart Homes Inc. to
introduce a business architecture proposal for the new smart
thermostat product. The business architecture will be designed
to not only include the best methods for supporting the new
smart thermostat product but also outline any inefficiency in
business operations to support current product lines and
strategic goals now and in the future. Proposal Criticality
The new thermostat product line, by Smart Homes, Inc. is
expected revolutionize the smart home market. In order to
ensure the quality of product and service to the consumer and
exceed projected sales quotas restructuring of current business
practices will need to be made. Implementing new business
architecture will allow Smart Homes Inc. to successfully
support and maintain the new product line while ensuring
stability for future growth.
The new smart thermostat product will redefine the way Smart
Homes Inc. conducts business. The addition of web and mobile-
based applications and service will introduce new security risks.
Each year millions of dollars are paid out in privacy violation
lawsuits. Major corporations are learning the hard way that it is

7. extremely important to safeguard sensitive consumer
information. New business architecture is needed implement
security measures to provide network reliability and protection.
Approach
A steering committee will be selected to provide a current
business model and detailed information on current business
operations to be analyzed by A&B Consulting. This analysis
will require A&B to conduct interviews with Smart Homes Inc.
staff and include all departments in order to located
inefficiencies and gain a better understanding of business
operations. The analysis will determine where current business
operations fail to meet new requirements introduced with the
smart thermostat and registration system. All findings will be
documented and used to establish resource requirements and
recommendations.
This proposal can be broken down into distinct tasks with
milestones.
1. Business Analysis – Analyze current business practices,
model, operations and document finding for recommendations.
2. Milestone – Collect data from business analysis.
3. Identify requirements: Make recommendations based on
findings from Business analysis, Steering committee and staff
interviews.
Milestone – Identify requirements based on collected data.
4. Consumer Analysis – Through data mining, surveys, and
current market trends analyze consumer requirements.
5. Analyze the current IT infrastructure and determine
modification or changes required to support the new registration
system.
Milestone – create a Unified Modeling Language (UML)
diagram highlighting the smart thermostat registration system
and its current a future state process flow.
6. Draft the initial proposal.
Milestone – Present initial changes to business practices to
Stakeholders for review and document all discrepancies.

8. Schedule the final proposal presentation meeting.
7. Finalize the proposal and route for review.
Milestone – Present final proposal and create project
schedule.Proposal Scope
The scope of this proposal is to present the business
architecture needed to streamline business operations and
promote efficient work methodologies. The business
architecture will include all facets fo business operations of
Smart Homes, Inc. including, human resources, financial,
Information Technology (IT) and sales and their alignment to
the business. The final proposal will state all recommendations
to the operation infrastructure needed to facilitate the expanding
of Smart Homes Inc., product line. This scope is dynamic and
will change according to project needs.
The scope of this project includes and excludes the following
items:
In scope:
Data Collection/Investigation - Organization
· Analysis of Smart Homes, Inc. current business operations for
determining inefficiencies.
· Analysis of current Information Security and policies for
compliance.
· Current Consumer Surveys. Satisfaction, Understanding of
current system, Awareness of peak usage.
· Determine which departments will be responsible for data
collection from device.
Analysis – Information Technology
· Analysis on Smart Homes, Inc. current IT infrastructure and
its ability to support the smart thermostat registration system.
· Inspect current database architecture and capacity.
· Determine how each department will receive date from Smart
Thermstat.
· Analyze current web and mobile capabilities
· Evaluate network infrastructure and security.
· Technical training for equipment and software.

9. Recommendations
· Recommendations for new business architecture.
· Training for managers and staff for software and equipment.
· Proposed organizational charts and UML diagrams and data
mining information
· Define encryption recommendations for wireless and mobile
architecture.
· Any hardware/software requirements for optimal system
performance.
· Network architecture changes need to facilitate new system
requirements.
· Recommendations on changes to current architecture
· Recommendations for new operational process to support new
product line.
Out of scope:
· Procurement and/or implementation services – Not responsible
for the procurement of consultants and/or services for anything
outside of project scope.
· Performing human resource actions – Will not be responsible
for the scheduling, assigning or managing of staff.
· Product experts, training, and any other detail outside the
business architecture,
· Financial analysis – Will only analyze the inefficiencies of the
organizations operational functions and will not be responsible
for preforming a financial analysis of the organization.
System requirements that must be met include:
1. Support for the smart thermostat product and registration
system. IT infrastructure must be able to support and
implement device communication upon installation.
2. Smart thermostat data must be stored accordingly and all
registration processes must be create and working to optimal
standards.Key Stakeholders
Table 1 lists the key stakeholders for this proposal. The
primary stakeholder is the CIO who will be briefed weekly on

10. the status of the business architecture proposal.
Name
Position
Level of Interest
Level of Influence
Management
Frank Brogan
CEO
High
High
Eager and open to change.
Dennis DeVries
CFO
High
High
Eager and open to change
Gustavo Espinosa
CIO
High
High
Eager and open to change
Sandra Davis
HR Director
Low
Low
Only interested in staff
Audre Debler
Finance Director
Moderate
Concerned with cost
Lynn Angerstien
Richard Hernandez
Rob Schulz
Brenda Sellars
Monica Euresti

11. Steering Committee
High
High
Highly interested
Paul Boyle
IT Director
High
Moderate
Excited with new product. Opportunities
The goal of this proposal is to create an effective and efficient
organizational business plan that will facilitate the future
growth, profits and increase current customer base. Through
analysis and investigation opportunities will be created that
could address staffing, culture, resources, policies and
procedures. In addition, the actions performed under this
proposal will provide important information regarding network
and information security and the ability to successfully protect
customer information. The success of this proposal depends on
several critical factors including effective communication, a
clear understanding of the requirements, and most importantly
Stakeholder and management support. Business Architecture
Requirements
As defined in the scope of this document, the purpose of this
proposal is to provide analysis of the current business
architecture and operations infrastructure in order to provide
recommendations for recognized inefficiencies. The
recommendations will provide insight to streamlining current
processes and bridge the implementation of the new Smart
Thermostat product line. The requirements for the business
architecture, as directed by the Stakeholders, is to analyze
current organization operations and infrastructure and propose a
new business architecture design that will support new Smart
Thermostat hardware and registration system. The final
approved design will ensure the following:
1. System requirements for installation and communication of

12. Smart Thermostat at installation sites to include:
a. Network requirements – DSL, Wireless
b. Mobile device requirements – Software version, Data
requirements
2. User registration – User registration form requirements which
include required fields such as:
a. First and last name
b. Installation address
c. Billing address
d. Email address
e. Phone number
3. Device registration – The Smart Thermostat will register to
the system and provide the following information:
a. Serial number
b. Model number
c. Firmware version
d. Device name (Host name)
4. Data Collection – The Smart Thermostat will record and send
data to the data center for monitoring and billing purposes. The
data will include:
a. Current Environmental status (temperature, humidity)
b. Energy usage
c. Location
d. Current Energy Schedule
e. Filter lifecycle
f. Power status
5. Privacy – The design will include procedures to safeguard
customer, device and system data to ensure confidentiality and
integrity.
Business Architecture Design
The purpose of this proposal will introduce processes that will
streamline operations to efficient support the new Smart
Thermostat system. Monitoring, registration and connectivity
are paramount in allowing customers to setup their new Smart
Thermostat devices. The customer must register the device,
setup account information, setup mobile features and accept the

13. privacy policy.
Registration System
The registration system will establish customer Smart
Thermostat account. The system will allow multiple devices to
be registered to a single customer account. The System
Identification Number and the units MAC address will be used
to associate the device with the customer account. The data
collected for the system will include the following:
· First and last name
· Mailing address
· Email address
· Phone number
· System ID (Device Serial Number is hard coded.)
· Model Number
· MAC address
· IP address
· Firmware version
· Location
As shown in Figure 1, the system allows one user to register
multiple devices with each registered device having exactly one
location.
The registration process (as shown in Figure 2) involves that
transfer of sensitive personal customer information, which is
considered confidential. Customers of Smart Homes Inc., expect
that all personal information be kept private, in accordance with
the organizations privacy policy, and should this information be
compromised could lead to civil litigation. For this reason it is
imperative to maintain a high standard in regards to network
and data security. At minimum these standards should include:
· 128 bit minimum encryption methods to safeguard personal
confidential data.
· Cryptographic protocols such as HTTPS, SSL and IPSec for
secure data transfers over Internet.
· Strict compliance auditing practices.

14. · Comprehensive disclosure agreement in accordance with State
and Federal regulations.
· Proper authentication methods for validating device
information to the system.
Figure 2 - Customer Registration Process 1
Monitored Data System
The Smart Thermostat device will record, store and transmit
recorded information to the Smart Home Inc. data center once
every 30 minutes from the time the initial setup configuration is
saved. User and device registration information will be
uploaded every 12 hours for authentication purposes. The Smart
Thermostat will adhere to the privacy policy when collecting
and uploading data. To ensure product satisfaction and enhance
development all device errors will be recorded and uploaded.
This will provide the necessary information when developing
system and firmware updates. As shown in Figure 4, if a Smart
Thermostat does not register with monitoring system within a
48 period, then service will be immediately suspended. The
customer will be required to contact the Smart Homes. Inc.,
Help Desk to resume service.
Figure 4 - 48 Hour Data Collection Rule 1
Remote Connection System
The Stakeholders have made it a requirement that customers
have the option to remotely manage the Smart Thermostat from
a mobile device. This innovative feature is a top selling point
for the product line and will be highly marketed. In order to
ensure a superior customer experience this process must
undergo a thorough analysis. The system will be outline to
provide a visual depiction of each step in the process for better

15. understanding. Figure 5 shows a conceptual process model from
the initiation of the remote connect process to the subsequent
connection closed point from an internal prospective.
Figure 5 – Process for Remote Connection
The remote connection can be summarized as follows:
· Step 1: Remote device attempts a secure connection. Move to
step 2.
· Step 2: Registration system validates user.
· Step 2a: If user is valid pass to Step 3.
· Step 2b: User not valid pass to registration system. Return to
Step 2.
· Step 3: Registration system validates smart thermostat
· Step 3a: If device is valid pass to Step 4.
· Step 3a1: If device is not valid, is there a device to register?
· Yes. Move to step 3b.
· No. Pass to Step 6.
· Step 3b: Pass to registration system. Return to Step 3
· Step 4: Establish secure session. Move to Step 5.
· Step 5: Check Activity
· Step 5a: Connection Active?
· Yes. Return to Step 5.
· No. Pass to Step 6.
· Step 6: Disconnect secure session.
Strict authentication procedures will be implemented to
guarantee system integrity. The Smart Thermostat will use a
distributed system consisting of computer components,
databases and software. A vital software component will be the
Information Assurance Suite (IA) suite, which is a designated
set of hardware and software designed to protect the internal
systems. Other system components will include Intrusion
detection, hardware firewalls, and authentication severs.
Smart Thermostat System
The Smart Thermostat system is a distributed system composed

16. of hardware and software components that in a whole allow the
system to function. The system components consist of the
following registration system, monitoring system, remote
connectivity system, Information Assurance Suite and other
various elements that will facilitate the required architecture.
Figure 6 shows a high-level architectural design with
recommended internal resources needed to provide support for
the smart thermostat product line.
Figure 6 - Smart Thermostat System
The Marketing, Legal, Operations, and IT Departments play a
critical role in the success of the Smart Thermostat product line.
Each department will focus
· IT Department: Provide 24/7-helpdesk support to product
owners. Monitors smart thermostat events and for determining
firmware and software updates hardware and software
performance, connection circuits, IA suite, and troubleshooting.
Assist the Operations Department in smart thermostat support.
· Legal Department: Oversight of federal and state laws,
information disclosure terms, and internal audits the registration
and monitoring system.
· Operations Department – Will be available 24/7 for customer
support with Smart Thermostat hardware related issues. Provide
installation services.
· Marketing Department: Track registration data for sales
forecasting and sales reports.
Internal View of the Organization
Internal View of the Organization
During the investigative process of the development of the
business architecture inefficiencies were discovered. Part of the
goal of this process is to ensure that the organizations are
utilized in the most effective manner. As part of the approach in
developing this proposal, the organizational structure of the

17. company was obtained (Figure 5) and analyzed.
Figure 6 - Smart Homes Inc., Org Chart 1
As shown, the CEO is atop the organization with all other
business functions displayed at the second layer with the IT
function falling under the COO. To gain further perspective,
survey questions were developed and follow-on survey was
conducted across the organization. A Likert scale was used to
ask the following questions:
Results from a survey conducted by our company regarding
various aspects of the Information Technology Department an
its business practices where analyzed. The questions were based
on a Likert Scale (Likert scale) and consisted of the following
questons:
1. Do Senior management support IT?
2. Are business goals and vision defined and shared?
3. Does good communication exists between IT and all non-IT
departments?
4. Is IT is involved with strategy development?
5. Is IT initiatives tied to business goals?
6. Do you believe that IT understands the business?
7. Are IT projects are driven by business needs?
Survey question were sent out to 200 respondents with a 90%
response rate with over 52% of the respondents disagreeing or
strongly disagreeing with the questions.
The survey reveals inefficiencies with the current business
practices, which directly affect the success of Smart Homes,
Inc. and the smart thermostat product line. The current
organization promotes these issues and allows for IT needs in
non-IT departments to circumvent the CIO effectively missing
the opportunity to align the business. In order to build a solid
foundation for establishing solid communications within IT and
non-IT departments significant restructuring is needed.
In an effort to align IT with the business, improve
communication, and provide adequate resources to meet the
smart thermostat proposed architecture (Figure 4), Smart

18. Homes, Inc. will benefit from the organizational structure
proposed in Figure 6.
Figure 6 - Proposed Org Chart 1
The organization structure elevates the CFO, CIO and Legal
functions under the CEO and places the remaining functions in a
third and fourth tier. This change will allow for legal oversight
of various functions of Human Resources and allow all IT
communications and needs to filter through the CIO. A newly
formed Operation Department will house the IT and operations
divisions all of which play critical roles in the new thermostat
product line.Smart Thermostat Business Rules
The business rules for the smart thermostat registration system
are based on the requirements set forth in this proposal and
support the detailed analysis performed on the Registration,
Monitored Data, and Remote Connection System modules
earlier in this paper. Business rules for the various modules are
written to provide easy understanding and promote use
throughout the organization (Morgan, 2002). Business rules
will contain unique numerical designations in order to keep
separation and add clarity. The Smart Thermostat business
rules are written to provide guidance, structure and
understanding for the new product line. Business rules will be
structured with numerical labels to provide clear distinction.
Numerical designations are as follows:
· Registration System – r1xx
· Monitored Data System – r2xx
· Remote Connection System – r3xx
Registration System Business Rules
The following business rules are suggested to ensure the
Registration System, shown in Figure 1 and 2, meets Smart
Homes, Inc. requirements.
r101 A registered customer must have a first name, last name,
mailing address, and email address.

19. r102 A registered device must have a model number, serial
number, and location.
r103 A registered customer can register more than one device.
r104 A registered device must have only one location
r105 A registration session must be encrypted
r106 The registration page will time out after 5 minutes of
idleness and will not save data.
r107 Customers must provide a valid email address.
r108 Each customer email address must be validated.
r109 If a customer does not enter all the required fields data,
then registration will not be granted.
r110 Only Smart Homes Inc., Smart Thermostat devices will be
authorized for registration.
Monitored Data System Business Rules
The following business rules are suggested to ensure the
Monitored Data System, shown in Figure 2, meets Smart
Homes, Inc. requirements.
r201 Customers will have only one concurrent license.
r202 A data collected per device.
r203 A data will be collected every 30 minutes.
r204 A data will be cached on device.
r205 A stored data set is defined as at least one data set kept
local to the device.
r206 A stored data set must be transmitted to the registration
database every 12 hours.
r207 A stored data set must be encrypted prior to transmission.
r208 Customer must have working and configured wireless
router and home network.
r209 A device must register at minimum once every 48-hours.
r210 Customer historical data will be available for one year.
Remote Connection System Business Rules
The following business rules are suggested to ensure the
Remote Connection System, shown if Figure 4, meets Smart
Homes, Inc. requirements.

20. r301 An active connection is defined as receive or transmit
sessions not greater than five minutes apart.
r302 A valid connection exists only if :
· The customer is registered
· The device is registered
· Active communication exists between the remote source and
Registration and Monitoring System
· The connection is encrypted.
r303 Customers may access system via multiple devices.
r304 Access to Smart Thermostat will require authentication.
r305 Internet connection is required to access Smart Thermostat
system.
Smart Thermostat Business Rules
The following business rules are suggested to ensure the Smart
Thermostat System, shown if Figure 3, meets Smart Homes, Inc.
requirements.
r401 Customers are limited to one one system account per
service agreement.
r402 Each Smart Thermostat customer is limited to.
r403 A valid connection exists only if :
· The customer is registered
· The device is registered
· Active communication exists between the remote source and
Registration and Monitoring System
· The connection is encrypted.
r403 A non-valid connection must be disconnected.
r404 Only authorized persons will be allowed access to
customer data.
References:
Likert scale (n.d.) from Wikipedia Retrieved on February 26,
2013 from http://en.wikipedia.org/wiki/Likert_scale

21. Smart Homes CEO
CFO
Finance
HR
Marketing
Legal
CIO
IT

22. Smart Homes CEO
Chief Financial Officer
Finance
Legal
Human Resources
Chief Information Officer
Operations
IT

23. Marketing
Remote Device
Connection

24. Validate User
Validate
Smart
Thermostat
Mobile to
Thermostat
Connection
Pass to
User/Device
Registration
Device to
Register
Check Activity
Connection
Active
Disconnect
Secure Session
Valid
Not Valid
Valid
Not Valid
Active

25. Not Active
No
Yes
Remote Device
Connection
Validate User
Validate
Smart
Thermostat
Mobile to
Thermostat
Connection
Pass to
User/Device
Registration
Device to
Register
Check Activity
Connection
Active
Disconnect
Secure Session
Valid
Not Valid
Valid
Not Valid
Active
Not Active
No
Yes