Friday, 4 November 2016

Batteries - other technologies for grid scale storage


http://www.mckinsey.com/business-functions/sustainability-and-resource-productivity/our-insights/the-new-economics-of-energy-storage

Battery - Vanadium Redox Flow

 http://trace.tennessee.edu/cgi/viewcontent.cgi?article=2609&context=utk_chanhonoproj
May 2013

Economic Report on Vanadium Redox Flow Battery with Optimization of Flow Rate

Kevin Spellman University of Tennessee - Knoxville, kspellma@utk.edu



"Conclusions
Appendix D represents the conclusions of the economic analysis. After the inclusion of all capital costs, the 12 MW vanadium redox flow battery cannot be recommended for economic benefit currently. The massive capital costs associated with the project (table 16) are the major contributions to the annualized expense. Specifically the cost of Vanadium oxide causes the project to rapidly become unfeasible. The annualized expense of Vanadium is over $2 million. Also, the PCS equipment for power conversion contributes to the massive capital costs with over $6 million in capital. Thus, if the cost of these two capital expenses were lessoned then the project would likely be feasible economically.

Perhaps a used PCS system from a decommissioned power source could provide a cheaper alternative to the massive capital of a new system. However, the cost of vanadium shows no great alternatives. The only hope is that the cost of vanadium will continue to decrease with time. Vanadium still currently represents essentially the cheapest metal for use in a redox battery. However, $14.33/ kg is far from feasible because of the over $7 million in capital this price represents. As demand for vanadium increases across the world, additional mines could be constructed, increasing the availability and lowering the cost. Thus, only time could help make this project feasible due to the massive amounts of vanadium required for a 12 MW plant.

In the current scenario, though, VRFBs may become a necessary component of the grid due to the implementation of green power sources. Thus, under the most ideal scenario with 100% cycle availability the battery will lose $664,153.07 annually. In fact, even under the most ideal scenario, the price of the sold electricity would need to be raised approximately $.03/kWh (from the value of $.1576/kWh) simply to break even over the year."

Thursday, 3 November 2016

Funding Tertiary Education

21st August 2016

There have been renewed threats of closing down our Universities in support of the #FeesMustFall campaign. With this in mind, Peter Bruce's said the following in the Sunday Times today (21st August 2016): " What I do know is that the JSE All Share indes rose 1.3% on Thursday. That is an increase in wealth , in a day of almost R100 billion, a fraction of which, if it were somehow pooled, would solve the fees problem and a host of others. But business is the devil, isn't it? Why bother talking to capitalists? What do they know?"

It turns out that Peter's figures are rather accurate. At a market capitalization of R7317 billion, a 1.3% increase amounts to R95.121 billion which is indeed "almost R100 billion"

In the National Treasury's 2016 Budget Review we were told (on page 77) that "The number of students enrolled in higher education institutions is projected to increase from 1 million in 2015/16 to 1.1 million in 2018/19, and the number of postgraduates and doctoral graduates from 48 300 and 2 060 to 56 600 and 2 500, respectively, over the same period." At a cost of R50k per undergraduate student per annum, 1.1 million students translates to 55 billion rand: well within the R95 billion with which the JSE capitalization increased on Thursday. This makes the R16.3 billion for short-term funding for higher education look small in comparison.

This figure for the The Market capitalisation of the JSE is R7317 billion as of the 29 July 2016 according to http://www.ftse.com/Analytics/FactSheets/Home/DownloadSingleIssue?issueName=J203 

Just to provide the context, The South African GDP for 2015 was about R4,073,000,000,000 or R4073 billion (page 42 of the Full Review) and the total budget was R1463.3 billion for the 2016/2017 financial year. Full Review

Energy

The debates about appropriate energy sources for South Africa become very heated mainly because of vested interests and hidden agendas. We have seen how the Gupta's have bought Uranium mines in anticipation of a nuclear new build. A well known columnist in the Engineering News worked for the old AEC and for ARMSCOR in the 1980s and now runs an organisation called "Nuclear Africa". He makes some of his money holding annual conferences jointly with Necsa to push the Nuclear option hard. As such he will use every argument under our Sun ( which does indeed send us energy produced by nuclear fusion) to not use solar energy to power our human needs on earth. On the other hand many people in the so called "green" environmental groups neglect the limited life time of solar installations and the limited availability of power from solar or wind installations. Very roughly speaking if a nuclear plant lasts 40 years and a solar plant only 20 years then the capital cost of the solar installation must be less than half that of the nuclear installation to be economically competitive. Furthermore if the nuclear installation only provides power for 80% of the hours in the year, given the need for refuelling an maintenance, and the solar or wind plant only provides power for 20% of the time for obvious reasons, then another factor of 20/80 which is one quarter comes in to play. So the solar installation must be one half times one quarter cheaper to be economically competitive. Hence only when solar and wind installation costs go down to below one eighth that of the nuclear installations can we say that their capital cost is competitive. Now these figures of 20 years, 40 years, 80% and 20% are not fixed and depending on what position you want to take in the debate, you will alter them up or down accordingly to justify your own view. This article by K. Branker a , M.J.M. Pathak a , J.M. Pearce entitled "A review of solar photovoltaic levelized cost of electricity"  provides a useful perspective on how financing options effect the relative cost of energy. In its Table 4 on page 8 it compares the Effect of degradation rate and performance requirement on system life. It shows that at a degradation rate of 0.2% a solar installation could last 80 years while at a 1.0% degradation rate the installation may only last 20 years. The technical challenge then is to reduce the degradation rate. It is these technical nuances which make it imperative that participants in energy debates listen carefully and make scrupulously honest comments in order to make the debate useful. We do not need our energy debates to descend to the level of Nkandla swimming pools being used as fire extinguishers.

State of Capture - Thuli Madonsela's Report

http://businesstech.co.za/news/wp-content/uploads/2016/11/329756252-State-of-Capture-14-October-2016.pdf

Tuesday, 1 November 2016

Eskom seems compromised in nuclear deal while research demonstrates that SA’s state-owned entities fall short of their constitutional obligations in terms of oversight, writes Neil Overy
01 November 2016 - 07:50 AM Neil Overy
https://www.businesslive.co.za/bd/opinion/2016-11-01-eskom-seems-compromised-in-nuclear-deal/

Nuclear costly and outdated, says US expert, Angelina Galiteva
The peak of California’s electricity consumption is about 60,000MW, just about double SA’s 32,000MW.
"Flexibility is what counts, not base load. Nobody cares about base load any more," Galiteva said. "Renewables can provide enough. You need to have very flexible resources.
https://www.businesslive.co.za/bd/companies/energy/2016-11-01-nuclear-costly-and-outdated-says-us-expert/ 

https://nuclear-news.net/category/africa/south-africa/

Saturday, 8 October 2016

Multilingualism

Some notes, links and papers.

Prof Mamokgethi Phakeng nee Setati
Recently appointed Deputy Vice Chancellor Research at UCT
She was at Wits, then at UNISA and now she is at UCT

http://www.uct.ac.za/dailynews/?id=9535

http://www.becomingyou.co.za/women-at-work-an-interview-with-professor-mamokgethi-phakeng/

https://www.researchgate.net/researcher/78181996_Mamokgethi_Setati

MAMOKGETHI SETATI and JILL ADLER
BETWEEN LANGUAGES AND DISCOURSES: LANGUAGE
PRACTICES IN PRIMARY MULTILINGUAL MATHEMATICS
CLASSROOMS IN SOUTH AFRICA
http://moscow.sci-hub.bz/6ccc9e4059ebcfa562eecdcf71d20322/setati2000.pdf

Teaching Mathematics in a Primary Multilingual Classroom
Mamokgethi Setati
University of theW itwatersrand
http://moscow.sci-hub.bz/a87435f6a5b309faadee2952c100b4bf/10.2307@30034945.pdf

https://www.researchgate.net/profile/Anthony_Essien/publication/280942447_Research_on_multilingualism_in_mathematics_education_in_South_Africa_2000-2007/links/55cdadb008aebebb8f578608.pdf?origin=publication_list&ev=auth_pub_xdl

http://cyber.sci-hub.bz/MTAuNTk1MS9qcmVzZW1hdGhlZHVjLjQ0LjEuMDExOQ==/10.5951@jresematheduc.44.1.0119.pdf

http://mamokgethi.com/wp-content/uploads/2014/04/Kgethi-CV-March-2014.pdf

http://www.uct.ac.za/downloads/email/AbridgedCV.Phakeng.Dec2015.Final.pdf


THE CALCULUS OF SOCIAL CHANGE – MATHEMATICS AT THE CUTTING EDGE
Mamokgethi Setati Phakeng (Chair)
University of South Africa
The aim of this plenary panel is to explore the idea of a Mathematics Education that is at the cutting edge and on the cusp/crest of making a difference, hence the title, “The Calculus of Social Change – Mathematics at the Cutting Edge”. This theme will be addressed by four panellists. In this introduction I give the rationale for the plenary panel and describe how it has been organised.
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.671.2061&rep=rep1&type=pdf#page=353

Thursday, 6 October 2016

The Universities and the challenges facing South Africa.

Our country is in crisis and our universities reflect that instability.
What is the actual situation at our universities?
Here are some articles which describe the challenges facing our universities
Please note that my publishing these links does not necessarily reflect my agreement or disagreement with the views expressed. I publish them with the intent of trying to understand the problems from as many different perspectives as possible.

1. The UCT Vice-Chancellor, Dr Max Price's restrained report on the UCT situation on Tuesday the 4th October 2016.
https://www.uct.ac.za/dailynews/?id=9989

A report dated 4th November about the arrest of a UCT activist:
http://www.politicsweb.co.za/news-and-analysis/uct-fallist-masixole-mlandu-arrested-again-for-vio

2. Pastor  Xola Skosana's war with privileged spaces
http://kaganof.com/kagablog/2016/06/10/pastor-xola-skosana-declares-war/ 

3. The thoughts of a socialist student leader - Athabile Nonxuba
http://www.studentinvestor.co.za/athabile-nonxuba-feesmustfall-interview/


4, Wits student leader Mcebo Dlamini
https://madibazradio.wordpress.com/politics/political-report-by-qhawe-ka-mkhwane/the-rise-and-fall-of-mcebo-dlamini/

5. Three old ones from 2013 and 2014 when Adam Habib had just been appointed vice-chancellor of Wits
http://mg.co.za/article/2013-08-30-00-mg-litfest-imagination-needed-to-face-this-new-moment-of-reckoning

http://www.financialmail.co.za/coverstory/2014/01/23/which-sa-universities-get-top-marks

http://mg.co.za/article/2014-11-07-varsities-we-darent-let-the-bucks-stop-here

6. A recent article about South African Business schools
http://www.financialmail.co.za/coverstory/2016/09/29/ranking-the-mbas-which-business-school-is-in-the-driving-seat

7. A overview of the senior management at UCT
https://www.uct.ac.za/about/management/execdirectors/

8. A New York Times Article about affirmative action at UCT
https://www.criminology-dev.uct.ac.za/usr/about/intro/transformation/new_york_times.pdf

9. Two articles from Achille Mbembe
 
http://mg.co.za/article/2016-09-22-mantashe-and-student-protesters-agree-on-university-shutdowns-but-this-is-the-last-thing-africa-needs-1

Saturday, 1 October 2016

Entry Level University text books

Open source textbooks for entry level university courses
http://2012books.lardbucket.org/

What is this?

First off, this is not the website for the original publisher. Instead, this is the archive of a small project by Andy Schmitz to archive Creative Commons-licensed copies of all the books which were available online from a specific publisher at the end of 2012. (That publisher has asked to remain unnamed here. For more information, see the attribution page.)
That publisher is a textbook publisher, focusing on (mostly entry-level) college textbooks. From their beginning until the end of 2012, they licensed all of their books under a Creative Commons by-nc-sa 3.0 license, allowing anyone who so desired to copy them, give them away, or modify them, as long as they acknowledged the authors, released the copies under the same license, and didn't do so for commercial gain. This was an unusual model, but they hoped it would work. (They sold access to additional study materials, as well as copies of books that would fit well on e-readers.)
In late 2012, they decided that the process of giving away access to their textbooks online wasn't working, and decided to switch to a different model, requiring students to pay for access to the books starting in 2013. (At least initially, these fees ware rather cheap compared to normal textbook prices, but still not free.)
Because the books were still available under a Creative Commons license at the end of 2012, I downloaded them to have copies known to be available under a Creative Commons license. I then repackaged them so that they are available outside of the publisher's website, and can be used by anyone under the terms of their Creative Commons license.

Friday, 30 September 2016

Today's Scripture

Friday 30th September 2016.
Today's Gospel
Saint  Luke.10:13-16.

Commentary:
http://mobile.evangelizo.org/

May all these languages spoken in our Church bring to mind each of our friends who speaks them.
Anke dipolelo tše di bolelwago mo kerekeng ya rena, di re gopotša bakgotsi ba rena bao ba di bolelago.

English
http://dailygospel.org/

Sepedi / Sesotho sa Leboa
https://www.bible.com/en-GB/bible/256/Psalms.139:1-14.NSO00
https://www.bible.com/en-GB/bible/256/Job.38:1-21.NSO00
https://www.bible.com/en-GB/bible/256/Luke.10:13-16.NSO00

Sesotho / Southern Sotho
https://www.bible.com/en-GB/bible/274/Psalms.139:1-14.sso89so
https://www.bible.com/en-GB/bible/274/Job.38:1-21.sso89so
https://www.bible.com/en-GB/bible/274/Luke.10:13-16.sso89so


Setswana
https://www.bible.com/en-GB/bible/278/Psalms.139:1-14.tsw08no
https://www.bible.com/en-GB/bible/278/Job.38:1-21.tsw08no
https://www.bible.com/en-GB/bible/278/Luke.10:13-16.tsw08no


XiTsonga
https://www.bible.com/en-GB/bible/418/Psalms.139:1-14.TSO89
https://www.bible.com/en-GB/bible/418/Job.38:1-21.TSO89
https://www.bible.com/en-GB/bible/418/Luke.10:13-16.TSO89


isiZulu
https://www.bible.com/en-GB/bible/286/Psalms.139:1-14.ZUL59
https://www.bible.com/en-GB/bible/286/Job.38:1-21.ZUL59
https://www.bible.com/en-GB/bible/286/Luke.10:13-16.ZUL59

isiXhosa
https://www.bible.com/en-GB/bible/282/Psalms.139:1-14.XHO96
https://www.bible.com/en-GB/bible/282/Job.38:1-21.XHO96
https://www.bible.com/en-GB/bible/282/Luke.10:13-16.XHO96

chiShona
https://www.bible.com/en-GB/bible/32/Psalms.139:1-14.BSN
https://www.bible.com/en-GB/bible/32/Job.38:1-21.BSN
https://www.bible.com/en-GB/bible/32/Luke.10:13-16.BSN

Tshivenda
https://www.bible.com/en-GB/bible/280/Psalms.139:1-14.ven98
https://www.bible.com/en-GB/bible/280/Job.38:1-21.ven98
https://www.bible.com/en-GB/bible/280/Luke.10:13-16.ven98

Chisena (Beira - Mozambique)
https://www.bible.com/en-GB/bible/1378/Luke.10:13-16.sehnt

Afrikaans
https://www.bible.com/af/bible/2/Psalms.139:1-14.aba
https://www.bible.com/af/bible/2/Job.38:1-21.aba
https://www.bible.com/af/bible/2/Luke.10:13-16.aba

Siswati
https://www.bible.com/en-GB/bible/604/Psalms.139:1-14.swtIsi
https://www.bible.com/en-GB/bible/604/Job.38:1-21.swtIsi
https://www.bible.com/en-GB/bible/604/Luke.10:13-16.swtIsi

isiNdebele
https://www.bible.com/en-GB/bible/450/Psalms.139:1-14.snd12
https://www.bible.com/en-GB/bible/450/Job.38:1-21.snd12
https://www.bible.com/en-GB/bible/450/Luke.10:13-16.snd12

XiTsonga
https://www.bible.com/en-GB/bible/418/Psalms.139:1-14.TSO89
https://www.bible.com/en-GB/bible/418/Job.38:1-21.TSO89
https://www.bible.com/en-GB/bible/418/Luke.10:13-16.TSO89

Kiswahili
https://www.bible.com/en-GB/bible/393/Psalms.139:1-14.bhnd
https://www.bible.com/en-GB/bible/393/Job.38:1-21.bhnd
https://www.bible.com/en-GB/bible/393/Luke.10:13-16.bhnd

Français
http://levangileauquotidien.org/

Italiano,
http://vangelodelgiorno.org/M/IT/

Nederlands
http://dagelijksevangelie.org/M/NL/

Deutsch (Germany)
http://evangeliumtagfuertag.org/

Español
http://evangeliodeldia.org/

Arabic
http://alingilalyawmi.org/M/AR/

Português
http://evangelhoquotidiano.org/M/PT/

Filipino
https://www.bible.com/tl/bible/399/Psalms.139:1-14.rtpv05
https://www.bible.com/tl/bible/399/Job.38:1-21.rtpv05
https://www.bible.com/tl/bible/399/Luke.10:13-16.rtpv05

Čeština / Czech
https://www.bible.com/cs/bible/15/Psalms.139:1-14.b21
https://www.bible.com/cs/bible/15/Job.38:1-21.b21
https://www.bible.com/cs/bible/15/Luke.10:13-16.b21

Sevenska / Swedish
https://www.bible.com/sv/bible/33/Psalms.139:1-14.bsv
https://www.bible.com/sv/bible/33/Job.38:1-21.bsv
https://www.bible.com/sv/bible/33/Luke.10:13-16.bsv

Magyar / Hungarian
https://www.bible.com/hu/bible/526/Psalms.139:1-14.csia
https://www.bible.com/hu/bible/526/Job.38:1-21.csia
https://www.bible.com/hu/bible/526/Luke.10:13-16.csia

Guiziga (Cameroon)
https://www.bible.com/en-GB/bible/550/Psalms.139:1-14.BEGDC
https://www.bible.com/en-GB/bible/550/Job.38:1-21.BEGDC
https://www.bible.com/en-GB/bible/550/Luke.10:13-16.BEGDC

Kapsiki (Cameroon)
https://www.bible.com/en-GB/bible/1515/Psalms.139:1-14.KBDC
https://www.bible.com/en-GB/bible/1515/Job.38:1-21.KBDC
https://www.bible.com/en-GB/bible/1515/Luke.10:13-16.KBDC

Noni (Cameroon North West Province near Kumbo)
https://www.bible.com/en-GB/bible/440/Luke.10:13-16.nhunt

Igbo (Nigeria)
https://www.bible.com/en-GB/bible/77/Psalms.139:1-14.igbob
https://www.bible.com/en-GB/bible/77/Job.38:1-21.igbob
https://www.bible.com/en-GB/bible/77/Luke.10:13-16.igbob

Yoruba (Nigeria)
https://www.bible.com/en-GB/bible/207/Psalms.139:1-14.bm
https://www.bible.com/en-GB/bible/207/Job.38:1-21.bm
https://www.bible.com/en-GB/bible/207/Luke.10:13-16.bm

Fula /Fulani /Fulfulde (Nigeria / Cameroon)
https://www.bible.com/en-GB/bible/905/Psalms.139:1-14.fbdc
https://www.bible.com/en-GB/bible/905/Job.38:1-21.fbdc
https://www.bible.com/en-GB/bible/905/Luke.10:13-16.fbdc

Hausa (Nigeria)
https://www.bible.com/en-GB/bible/71/Psalms.139:1-14.hau
https://www.bible.com/en-GB/bible/71/Job.38:1-21.hau
https://www.bible.com/en-GB/bible/71/Luke.10:13-16.hau

Luguru (Tanzania)
https://www.bible.com/en-GB/bible/915/Psalms.139:1-14.lbv
https://www.bible.com/en-GB/bible/915/Job.38:1-21.lbv
https://www.bible.com/en-GB/bible/915/Luke.10:13-16.lbv

Acholi (Uganda)
https://www.bible.com/en-GB/bible/559/Psalms.139:1-14.aco85
https://www.bible.com/en-GB/bible/559/Job.38:1-21.aco85
https://www.bible.com/en-GB/bible/559/Luke.10:13-16.aco85

Lango (Uganda)
https://www.bible.com/en-GB/bible/472/Psalms.139:1-14.la79
https://www.bible.com/en-GB/bible/472/Job.38:1-21.la79
https://www.bible.com/en-GB/bible/472/Luke.10:13-16.la79

Pope Francis' twitter page
https://mobile.twitter.com/Pontifex

Vatican News
www.news.va/en

Map of Israel in New Testament Times:
http://www.bible-history.com/geography/ancient-israel/israel-first-century.html

Jerusalem at the time of Abram and Melchizedek ((16- Salem, Jebus)
http://www.generationword.com/jerusalem/16-salem-jebus.html

The Catholic Church in South Africa through the eyes of the Southern Cross
https://www.facebook.com/thescross/?rc=p
or http://www.scross.co.za/
The Jesuit Institute South Africa
https://www.facebook.com/JesuitInstitute

Our Parish Website
http://www.staugustinesilverton.com


Thursday, 29 September 2016

Johannesburg girl wins top prize at Google Science Fair in the USA

Some fantastic news from the Google Science Fair 2106 in the USA, if you have not already heard the news.

Kiara Nirghin (16) from Jo'burg won it with a project on using orange peels to store water.

https://www.googlesciencefair.com/en/

And here is an earlier report about the finalists.

http://googleforeducation.blogspot.co.za/2016/08/sixteen-science-and-engineering.html?m=1
Please pass on the news to other people involved in Science Expo and Science Fairs in South Africa.

This is really encouraging for all our young scientists.

Michaelmas - Feast of Saints Michael, Gabriel, Uriel and Raphael

29th September 2016

Michaelmas

http://mobile.evangelizo.org/gospel.php

"

Symeon the New Theologian
"The angels in heaven always look upon the face of my heavenly Father" (Mt 18,10)
I give thanks to you, my God, because you have enabled me to live, to know and to worship you. For life is “to know you the only true God” (Jn 17,3), O Creator and Author of all, unbegotten, uncreated, without source, unique, and the Son begotten of you, and Most Holy Spirit proceeding from you: threefold unity worthy of all praise... What glory or light of immortality is there among angels and archangels, Sovereignties, cherubim and seraphim and all other heavenly hosts; what joy is there, what radiance of insubstantial life if not the incomparable light of the Blessed Trinity?... Mention to me any being, corporeal or incorporeal, and you will find that God made them all. Should anyone talk to you about any beings whatsoever, those of heaven, of earth or those of the underworld, for them, too, and for all, there is only one life, one glory, one hope, one kingdom, one only treasure, joy, crown, victory, peace or splendor of any kind: and that is to know the origin and cause from which all has originated, all has come to birth. He is the one who upholds all things above and those below; He is the one who orders all the spiritual beings, He is the one who reigns over every visible being... These increased in knowledge and redoubled their fear when they saw Satan fall and his associates carried off by their presumption. Those who fell forgot it all, slaves of pride that they were; whereas all those who retained their knowledge, supported by fear and love, clung to their Lord. Thus the recognition of his lordship Resulted, too, in an increase of their love because they now saw better and more clearly the dazzling radiance of the Trinity.

"