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Wireless TabletPC

 
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digital-doc
Moderator


Joined: 09 Jan 2003
Posts: 273
Location: Los Angeles

PostPosted: Fri Jan 17, 2003 7:24 pm    Post subject: Wireless TabletPC Reply with quote

Can anybody comment on the speed, or lack of speed, with respect to running a medical application across a 802.11 connection? I realize there are many variables involved here including the applications itself.

One of my concerns on a tabletPC is whether to make the tablet a server or a workstation. The advantage of making the tablet a server is that the program and data would be on my immediate hard drive as opposed to accessing data across a network.

Also, has anyone tried using Terminal Services on the TabletPC to run an application off an XP Pro server or Windows 2000 server? I am assuming the TabletPCs have TS with XP Pro.

Thanks.
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C.M.Wilkerson, D.C.
www.MedicalTabletPC.com
www.digital-doc.com

[url=http://www.digital-doc.com/C2/EMR.htm]TabletPCs in a Medical Environment[/url]

"Good software makes us think, good hardware and software, changes our lives."
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mitodad
Tableteer


Joined: 07 Dec 2002
Posts: 39
Location: NJ

PostPosted: Fri Jan 17, 2003 10:19 pm    Post subject: terminal server edition Reply with quote

my opinion is to not make the tablet a server for a couple of reasons.

1) from a practical standpoint, especially with new hipaa issues, the tablet is the most insecure server around - it's way to portable and wouldn't want all that information on a machine

2) there is no way to set up a mirrored raid system - the bare minimum requirement for a server

3) Windows XP Pro is not a Terminal Server Edition OS. The last Terminal Server Edition OS was Win2K. Having terminal services is not the same as being a Terminal Server Edition.

4) some of the functionality of tablets are lost because of #3 as speech/handwriting do not cross over the rdp session of citrix metaframe which sits on top of Terminal Server making it possible to use thin clients.

5) advantages of having a win xp pro client with citrix is that screen re-draws are so much faster!! than any win ce device. i hate using my nurse's MobilePro880 anymore because the MIPS 168Mhz processor is so noticeably slow across either the ISDN line we have in my second office or even as a direct wireless connection at my main office. for my apps, it was imperative that i have a full-screen device such as the sharp/vadem (mobilon/clio) twins which became obsolete when sharp dropped vadem's unit and vadem dropped technology completely and units went bad. (Pinax Group has now taken over the Vadem unit, but pricing to fix my units as sharp oem'ed their clio under mobilon moniker is not worth fixing). the NEC MobilePro880 is identical in form-factor - screen size, physical dimensions and weight, but again is a "crippled" machine as only has wince 2.11 (the professional handheld os) and is not upgradeable! it was a waste of time trying to work with "pocket" office apps and expect to sync to a server as the most important cardinal rule is to not install/play around with it as not too many things are terminal server friendly.

the above are just my views, and keep in mind that ? depends on apps requirements. as my emr requires free text entry for subjective input and treatment plans a pure slate is not possible. to have a pseudo convertible like the tc1000 also doesn't work in my set up being a pediatrician and literally on the go 50% of work day. portability was also important and that ruled out the toshiba. if your app is slate-friendly once fully configured, (meaning no keyboarding necessary) then i'd again say that tablet is best suited as a thin client and let the doc have the ability to have a full'fledged computer to bring home and do work with. can have a docking station at home for keyboarding needs. though you may have fitaly experience with pocket/palm devices, can't imagine how that or input panel can begin to replace keyboarding in a citrix session as these don't cross well as mentioned above.

hope this helps a little, though citrix limitations are probably not what you wanted to hear.

ken
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sallen83
Tableteer


Joined: 05 Jan 2003
Posts: 7
Location: Ohio

PostPosted: Sat Jan 18, 2003 6:41 am    Post subject: Reply with quote

I agree with everything Ken said. The tablet is not made to be a server and forcing it to be one will lose features of the tablet and the server.

If you're interested in storing data on the tablet, you might look for applications that store locally and can synchronize at a later time. Some apps store on Access or MSDE locally and then transfers data with MS SQL Server 2000 later.

I'm developing a web-based application so Tablets do well because we use a thin-client model.

I have used the tablet's Terminal Services to run a program on my Windows 2000 Server across a wireless network. It works very well for applications with simple graphics.

Hope this helps,

Scott
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digital-doc
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Joined: 09 Jan 2003
Posts: 273
Location: Los Angeles

PostPosted: Sat Jan 18, 2003 8:17 am    Post subject: Reply with quote

Thanks for the above replies, it helps me to get a handle on which Tabletpc to buy.

I have used Citrix. Citrix is a great program and absolutely essential when the hardware is limited and you don't want to be waiting for those screen shots to appear. However, I don't want to use Citrix, unless I have to.

My reason for putting the EMR on the sever (tabletpc in this case) is because it will speed up access to application for the user of the tablet (me). My staff would be accessing me (tabletpc for history and demographic input) which would make it slower for them but then again they have more powerful desktops. I have experimented with these two scenarios (server client) on a Lifebook pen computer versus a SCSI server in the other room. On 802.11, in the absence of Citrix, using my 400 MHz Lifebook was as the server was the only way to go for me.

Having the application on the tablet as a server, enhances take home mobility, and arguably security, contingent on how you look at it.

I use a 20 Gig Peerless USB to backup every day. It's no portable raid but it works fine once the first backup is done and the rest are incrementals of only what changed.
_________________
C.M.Wilkerson, D.C.
www.MedicalTabletPC.com
www.digital-doc.com

[url=http://www.digital-doc.com/C2/EMR.htm]TabletPCs in a Medical Environment[/url]

"Good software makes us think, good hardware and software, changes our lives."
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mitodad
Tableteer


Joined: 07 Dec 2002
Posts: 39
Location: NJ

PostPosted: Sat Jan 18, 2003 8:35 am    Post subject: emr Reply with quote

digitial-doc

i understand your issues with the tablet pc being a server in your office. but, if you have intentions of making your application usable for anyone else, it won't work. the server needs thin clients only with citrix, citrix by definition would make it hipaa compliant as unless someone has details of your client passwords, etc, then they can't get to your data. furthermore, as a citrix client, you could access your server over the internet or as a direct dial-in. that's how i opened up my second office.

now that the pinax group has taken over the Vadem, they're selling for about $650. can also get NEC's MobilePro 880 for about the same price, too, for people who need to roam. for stationary people, why spend money on desktops when terminals would work??

just my 0.02, and depends on what your goals/expectations are with your app that you've developed.

ken
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digital-doc
Moderator


Joined: 09 Jan 2003
Posts: 273
Location: Los Angeles

PostPosted: Sat Jan 18, 2003 8:53 am    Post subject: Re: emr Reply with quote

[quote="mitodad"]digitial-doc

i understand your issues with the tablet pc being a server in your office. but, if you have intentions of making your application usable for anyone else, it won't work. the server needs thin clients only with citrix, citrix by definition would make it hipaa compliant as unless someone has details of your client passwords, etc, then they can't get to your data. furthermore, as a citrix client, you could access your server over the internet or as a direct dial-in. that's how i opened up my second office.

now that the pinax group has taken over the Vadem, they're selling for about $650. can also get NEC's MobilePro 880 for about the same price, too, for people who need to roam. for stationary people, why spend money on desktops when terminals would work??

just my 0.02, and depends on what your goals/expectations are with your app that you've developed.

ken[/quote]

>>i understand your issues with the tablet pc being a server in your office. but, if you have intentions of making your application usable for anyone else, it won't work<<

Citrix would definitely be a good solution, and probably the best solution, albeit an extra expense I am trying to avoid. The above scenario does work though, with my Lifebook as the server, it functions fairly fast for me. It takes the desktop client of my secretary, a little longer to open the application. It enables me to dictate directly into the Lifebook as well. (not possible with Citrix).
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C.M.Wilkerson, D.C.
www.MedicalTabletPC.com
www.digital-doc.com

[url=http://www.digital-doc.com/C2/EMR.htm]TabletPCs in a Medical Environment[/url]

"Good software makes us think, good hardware and software, changes our lives."
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btrogdon
Tableteer


Joined: 30 Jan 2003
Posts: 3
Location: Winston-Salem, North Carolina

PostPosted: Thu Jan 30, 2003 5:17 pm    Post subject: Citrix.. Reply with quote

Hello I am just joining the SIG's and since you are on the subject of Citrix I will pipe up. We are a 30+ provider private practice whom is rolling out EMR. We have almost 200 employees whom will be accessing the EMR at diffrent levels. I am currently evaluating numerous tablet PC's and am leaning toward the Fujitsu 4100 for the (Fat Client) and the WYSE Thin Tablet for the majority of our providers.

In the short that I have read I understand that you are debating or have already setup your tablet as the host and your users will get their data from your machine which is mobile and wireless. I do not know what application you are using for your EMR however what if your tablet (Host/Server) suddenly became damaged or worse what if it were stolen? Would you still be able to operate your EMR system? Would your users still have access to the data?

Most importantly HIPAA. If your laptop is wireless and your users are getting information from you as the host what type of security is in place? In other words, could I sit in your parking lot with my Wireless NIC and capture packets off your network? Could I log into your tablet (Host/Server)?

Citrix is not cheap but the benefit is much better in our case as to maintenance and configurations. If we loose a tablet no data would be in danger of walking out the door as its all housed in our SQL server which is attached to the Citrix Farm.

Brad Trogdon
Orthopaedic Specialists of the Carolinas
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