<html><head><base href="x-msg://3/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Crispin et al; <div>That got me thinking: What about a vertical axis added to reflect effects of time on the given variables: Durability (stove amortization), payback period based on for fuel saved, or user acceptance, it might look like this,eh? (Interior concentric septimagon profile not shown to avoid utter confusion):<div><div> <img id="efe7dfb3-5307-4a08-85bf-40af317a7f52" height="549" width="558" apple-width="yes" apple-height="yes" src="cid:92DF37DE-28A6-4931-B8FA-8AB80CF517FD"></div><div><br></div><div>Richard, freezing in NIcaragua</div><div><br></div><div><br></div><div>======<br><div><div>On Mar 11, 2014, at 10:48 AM, Crispin Pembert-Pigott wrote:</div><br class="Apple-interchange-newline"><div lang="EN-CA" link="#0563C1" vlink="#954F72"><div class="WordSection1" style="page: WordSection1; "><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; ">Dear Ron<o:p></o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; ">I have spoken to Cecil and he will provide us a synopsis.<o:p></o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; ">A spider diagramme is a common way to show how products compare when measured using numerous dimensions. Here is one displaying graphically the properties chewing gum:<o:p></o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span><img width="473" height="386" id="Picture_x0020_1" apple-width="yes" apple-height="yes" src="cid:image003.jpg@01CF3D28.337DEAB0"></span><o:p></o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; ">By using a ‘high’ rating for the centre and a ‘low’ rating at the outside edge, one can create informative charts for as many properties as you want.</div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; "><o:p> </o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; ">Social science metrics include preferences, fuels, controllability, lighting time, ease of learning to use it, appearance, comparison with other products such as traditional stoves or competing improved stoves, working life, ease of maintenance, ability to accommodate a range of pots or multiple pots, price, installation cost, transport to the home issues, attention demand, fuel preparation requirement, safety concerns, space heating, light casting, clothes drying ability, fuel drying ability, thermal mass heat storage, fuel flexibility and many others relating to opinions of users or observers. Perception of modernity is another.<o:p></o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; "><o:p> </o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; ">As Verena Brinkmann said at the ISO meeting in Kenya, it is difficult to measure everything so what is needed is a list of things one might report, and a toolbox of methods that are used for each item. I was surprised at the use of the term ‘toolbox’ because that is exactly what I propose as a suitable method of determining stove performance across a wide range of devices, pots, foods, fuels and user habits. If the measurement you want is relative performance in the place where you plan to sell stoves, then the test of performance has to be relevant to those circumstances and ‘relevant’ includes many social dimensions.<o:p></o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; "><o:p> </o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; ">If you want to measure the things that are important to the stove users, you first have to know what they think is important and then see if the product addresses those needs or shortcomings well. In the case of funded projects, the ‘customer’ is both the funder and the end user so there are additional measurements required.<o:p></o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; "><o:p> </o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; ">By making a spider diagramme or spider chart on can put on the table those things which the project and users feel are important and rate products more easily and present comparisons in a pretty small space. In the chart above you can see that the green product line is inside all the others on every count. That might be a stove scoring better than other stoves on every score no matter how many scores one is tracking.<o:p></o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; "><o:p> </o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; ">Regards<o:p></o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; ">Crispin<o:p></o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; "><o:p> </o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><span style="color: black; "><o:p> </o:p></span></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; ">Crispin:<o:p></o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "> If it is difficult to send a chart or two, could you identify the Cecil Cook nine variables?<o:p></o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; ">Ron<o:p></o:p></div><div style="margin-top: 0mm; margin-right: 0mm; margin-bottom: 0.0001pt; margin-left: 0mm; font-size: 11pt; font-family: Calibri, sans-serif; "><o:p> </o:p></div></div>_______________________________________________<br>Stoves mailing list<br><br>to Send a Message to the list, use the email address<br><a href="mailto:stoves@lists.bioenergylists.org" style="color: rgb(5, 99, 193); text-decoration: underline; ">stoves@lists.bioenergylists.org</a><br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br><a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org" style="color: rgb(5, 99, 193); text-decoration: underline; ">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a><br><br>for more Biomass Cooking Stoves, News and Information see our web site:<br><a href="http://stoves.bioenergylists.org/" style="color: rgb(5, 99, 193); text-decoration: underline; ">http://stoves.bioenergylists.org/</a><br><br></div></div><br></div></div></div></body></html>