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1

The policy analysis matrix for agricultural development, By Eric A Monke & Scott R Pearson, Cornell University Press, Ithaca and London, 1989

Journal:

Development Southern Africa

Year:

1990

Language:

english

File:

PDF, 517 KB

english, 1990

2

The efficiency of smallholder agriculture in South Africa

Jenifer Piesse, Helmke Sartorius Von Bach, Colin Thirtle, Johan Van Zyl

Journal:

Journal of International Development

Year:

1996

Language:

english

File:

PDF, 1.15 MB

english, 1996

3

Social Media, Permanence, and Tattooed Students: The Case for Personal, Personal Branding

Bergh, Luna, Jordaan, Jacques, Lombard, Elbie, Naude, Luzelle, van Zyl, Johan

Journal:

Year:

2017

Language:

english

File:

PDF, 562 KB

english, 2017

4

Agricultural market liberalization: a case study of the Western Cape Province in South Africa

Johan Van Zyl, Nick Vink, Rob Townsend, Johann Kirsten

Journal:

Journal of International Development

Year:

1998

Language:

english

File:

PDF, 133 KB

english, 1998

5

Spatial, temporal and source contribution assessments of black carbon over the northern interior of South Africa

Chiloane, Kgaugelo Euphinia, Beukes, Johan Paul, van Zyl, Pieter Gideon, Maritz, Petra, Vakkari, Ville, Josipovic, Miroslav, Venter, Andrew Derick, Jaars, Kerneels, Tiitta, Petri, Kulmala, Markku, Wie

Journal:

Atmospheric Chemistry and Physics

Year:

2017

Language:

english

File:

PDF, 19.23 MB

english, 2017

6

Short and long-run returns to agricultural R&D in South Africa, or will the real rate of return please stand up?

David Schimmelpfennig, Colin Thirtle, Johan van Zyl, Carlos Arnade, Yougesh Khatri

Journal:

Agricultural Economics

Year:

2000

Language:

english

File:

PDF, 1.07 MB

english, 2000

7

Statistical analysis of factors driving surface ozone variability over continental South Africa

Laban, Tracey Leah, Van Zyl, Pieter Gideon, Beukes, Johan Paul, Mikkonen, Santtu, Santana, Leonard, Josipovic, Miroslav, Vakkari, Ville, Thompson, Anne M., Kulmala, Markku, Laakso, Lauri

Journal:

Journal of Integrative Environmental Sciences

Year:

2020

File:

PDF, 2.47 MB

2020

8

FARM SIZE EFFICIENCY, FOOD SECURITY AND MARKET ASSISTED RURAL LAND REFORM IN SOUTH AFRICA

Journal:

Year:

1994

Language:

english

File:

PDF, 1.54 MB

english, 1994

9

Short and long-run returns to agricultural R&D in South Africa, or will the real rate of return please stand up?

David Schimmelpfennig, Colin Thirtle, Johan van Zyl, Carlos Arnade, Yougesh Khatri

Journal:

Agricultural Economics

Year:

2000

Language:

english

File:

PDF, 207 KB

english, 2000

10

EFFECTS OF THE 1992 DROUGHT ON PRODUCTIVITY IN THE SOUTH AFRICAN HOMELANDS: AN APPLICATION OF THE MALMQUIST INDEX

Jenifer Piesse, Colin Thirtle, Johan van Zyl

Journal:

Journal of Agricultural Economics

Year:

1996

Language:

english

File:

PDF, 545 KB

english, 1996

11

FOOD SECURITY IN SOUTH AFRICA

van Zyl, Johan, Kirsten, Johann

Journal:

Year:

1992

Language:

english

File:

PDF, 2.41 MB

english, 1992

12

[IEEE 2014 16th International Conference on Harmonics and Quality of Power (ICHQP) - Bucharest, Romania (2014.5.25-2014.5.28)] 2014 16th International Conference on Harmonics and Quality of Power (ICHQP) - The effect of real network phase disturbances on the calculation of IEC 61000-4-30 parameters

Rens, Johan, de Kock, Jan, van Wyk, Willie, van Zyl, Jacobus

Year:

2014

Language:

english

File:

PDF, 502 KB

english, 2014

13

ECONOMICS AND AFFIRMATIVE ACTION IN A DEMOCRATIC SOUTH AFRICA: ABOUT VALUES, WELFARE AND CHOICE AMONG ALTERNATIVE INSTITUTIONS IN THE FACE OF CONFLICT

Journal:

Year:

1993

Language:

english

File:

PDF, 664 KB

english, 1993

14

Agricultural education and training in South Africa: An overview

van Rooyen, Johan, Barnard, Robin, van Zyl, Johan

Journal:

Development Southern Africa

Year:

1996

Language:

english

File:

PDF, 1.13 MB

english, 1996

15

Total factor productivity in South African agriculture, 1947‐91

Thirtle, Colin, von Bach, Helmke Sartorius, van Zyl, Johan

Journal:

Development Southern Africa

Year:

1993

Language:

english

File:

PDF, 943 KB

english, 1993

16

The myth of large farm superiority: Lessons from agricultural transition in poland

Van Zyl, Johan, Parker, Andrew N., Miller, Bill R.

Journal:

The Journal of Policy Reform

Year:

2000

Language:

english

File:

PDF, 1.10 MB

english, 2000

17

CROP LEVEL SUPPLY RESPONSE IN SOUTH AFRICAN AGRICULTURE: AN ERROR CORRECTION APPROACH

Schimmelpfennig, David, Thirtle, Colin, van Zyl, Johan

Journal:

Year:

1996

Language:

english

File:

PDF, 788 KB

english, 1996

18

When “okay” is not okay: Acoustic characteristics of single-word prosody conveying reluctance

van Zyl, Marianne, Hanekom, Johan J.

Journal:

The Journal of the Acoustical Society of America

Year:

2013

Language:

english

File:

PDF, 185 KB

english, 2013

19

Characterising Particulate Organic Nitrogen at A Savannah-Grassland Region in South Africa

Booyens, Wanda, Van Zyl, Pieter G., Beukes, Johan P., Ruiz-Jimenez, Jose, Kopperi, Matias, Riekkola, Marja-Liisa, Vakkari, Ville, Josipovic, Miroslav, Kulmala, Markku, Laakso, Lauri

Journal:

Year:

2019

File:

PDF, 1.43 MB

2019

20

Effect of steroid therapy on ICP in tuberculous meningitis

Johan F. Schoeman, Lana E. Van Zyl, Jane N. De Villiers, Peter R. Donald

Journal:

Pediatric Neurology

Year:

1994

Language:

english

File:

PDF, 122 KB

english, 1994

21

PRICE LEADERSHIP IN THE SOUTH AFRICAN CARBOHYDRATE MARKET / Prysleierskap in die Suid-Afrikaanse koolhidraatmark

Sartorius von Bach, Helmke, van Zyl, Johan, Vivier, Leon, Millard, Solly

Journal:

Year:

1992

Language:

english

File:

PDF, 794 KB

english, 1992

22

Simulating effects of aerosols on rainfall in southern Africa

Henriksson, Svante, Sundström, Anu-Maija, Josipovic, Micky, van Zyl, Pieter, Beukes, Johan Paul

Journal:

Air Quality, Atmosphere & Health

Year:

2018

Language:

english

File:

PDF, 1.97 MB

english, 2018

23

Measurements of biogenic volatile organic compounds at a grazed savannah-grassland-agriculture landscape in South Africa

Jaars, Kerneels, van Zyl, Pieter G., Beukes, Johan P., Hellén, Heidi, Vakkari, Ville, Josipovic, Micky, Venter, Andrew D., Räsänen, Matti, Knoetze, Leandra, Cilliers, Dirk P., Siebert, Stefan J., Kulm

Journal:

Atmospheric Chemistry and Physics Discussions

Year:

2016

Language:

english

File:

PDF, 3.29 MB

english, 2016

24

Establishment and equilibrium levels of deleterious mutations in large populations

Viljoen, Johan W., de Villiers, J. Pieter, van Zyl, Augustinus J., Mezzavilla, Massimo, Pepper, Michael S.

Journal:

Scientific Reports

Year:

2019

Language:

english

File:

PDF, 1.20 MB

english, 2019

25

[IEEE 2019 IEEE AFRICON - Accra, Ghana (2019.9.25-2019.9.27)] 2019 IEEE AFRICON - Assessment planning for the new Bachelor of Engineering Technology programme

Van Zyl, Johan, Doorsamy, Wesley, Bokoro, Pitshou

Year:

2019

File:

PDF, 154 KB

2019

26

The price of determinate solutions: A call for methodological pluralism in agricultural economics∗

Journal:

Development Southern Africa

Year:

1989

Language:

english

File:

PDF, 559 KB

english, 1989

27

Major secondary aerosol formation in southern African open biomass burning plumes

Vakkari, Ville, Beukes, Johan P., Dal Maso, Miikka, Aurela, Mika, Josipovic, Miroslav, van Zyl, Pieter G.

Journal:

Nature Geoscience

Year:

2018

Language:

english

File:

PDF, 1.96 MB

english, 2018

28

Surfactant treatment before first breath for respiratory distress syndrome in preterm lambs: comparison of a peptide-containing synthetic lung surfactant with porcine-derived surfactant

van Zyl, Johann, Smith, Johan

Journal:

Drug Design Development and Therapy

Year:

2013

Language:

english

File:

PDF, 1.86 MB

english, 2013

29

Distributional aspects if a zero correlation is assumed in a paired comparison of means

Johan M. Van Zyl

Journal:

Computational Statistics & Data Analysis

Year:

1991

Language:

english

File:

PDF, 941 KB

english, 1991

30

Editorial

Kirsten, Johann, van Zyl, Johan, Hassan, Rashid

Journal:

Year:

1999

Language:

english

File:

PDF, 170 KB

english, 1999

31

PRYSBELEID IN DIE MIELIEBEDRYF: EFFEKTE VAN PRYSSENSITIWITEIT, INTERAFHANKLIKHEID EN RELATIEWE INKOMEVERSKUIWINGS

Journal:

Year:

1990

File:

PDF, 132 KB

1990

32

An optimal image transform for threshold-based cloud detection using heteroscedastic discriminant analysis

Marais, Izak Van Zyl, Du Preez, Johan Adam, Steyn, Willem Herman

Journal:

International Journal of Remote Sensing

Year:

2011

Language:

english

File:

PDF, 1.13 MB

english, 2011

33

Alternative agriculture, by the Committee on the Role of Alternative Farming Methods in Modern Production Agriculture, Board on Agriculture, National Research Council. National Academy Press, Washington, DC, 1989

Journal:

Development Southern Africa

Year:

1990

Language:

english

File:

PDF, 490 KB

english, 1990

34

'N PERSPEKTIEF OP VOEDSELSELFVOORSIENENDHEID AS 'N DETERMINANT VAN VOEDSELSEKERHEID / A perspective on food self-sufficiency as a determinant of food security

Louw, Herman, van Zyl, Johan

Journal:

Year:

1991

File:

PDF, 1.62 MB

1991

35

Temporal and source assessments of organic and elemental carbon at sites in the northern South African interior

Maritz, Petra, Beukes, Johan P., van Zyl, Pieter G., Liousse, Catherine, Gardrat, Eric, Ramandh, Avishkar, Mkhatshwa, Gabisile V.

Journal:

Journal of Atmospheric Chemistry

Year:

2020

Language:

english

File:

PDF, 3.03 MB

english, 2020

36

Six-year observations of aerosol optical properties at a southern African grassland savannah site

Venter, Marcell, Beukes, Johan Paul, Gideon van Zyl, Pieter, Vakkari, Ville, Virkkula, Aki, Josipovic, Miroslav, Kulmala, Markku, Laakso, Lauri

Journal:

Atmospheric Environment

Year:

2020

File:

PDF, 5.08 MB

2020

37

Re-evaluating the NO2 hotspot over the South African Highveld

Lourens, Alexandra S.M., Butler, Timothy M., Beukes, Johan P., Van Zyl, Pieter G., Beirle, Steffen, Wagner, Thomas K., Heue, Klaus-Peter, Pienaar, Jacobus J., Fourie, Gerhardus D., Lawrence, Mark G.

Journal:

South African Journal of Science

Year:

2012

File:

PDF, 733 KB

2012

38

The effect of a peptide-containing synthetic lung surfactant on gas exchange and lung mechanics in a rabbit model of surfactant depletion

van Zyl, Johann M, Smith, Johan, Hawtrey,

Journal:

Drug Design Development and Therapy

Year:

2013

Language:

english

File:

PDF, 502 KB

english, 2013

39

Women and Difference || Where Are the Women Voters?

Moira Maconachie, Milla Mclachlan, Jenny Schreiner and Johan van Zyl

Journal:

Year:

1993

Language:

english

File:

PDF, 463 KB

english, 1993

40

Reevaluating the contribution of sulfuric acid and the origin of organic compounds in atmospheric nanoparticle growth

Vakkari, Ville, Tiitta, Petri, Jaars, Kerneels, Croteau, Philip, Beukes, Johan Paul, Josipovic, Miroslav, Kerminen, Veli-Matti, Kulmala, Markku, Venter, Andrew D., van Zyl, Pieter G., Worsnop, Douglas

Journal:

Geophysical Research Letters

Year:

2015

Language:

english

File:

PDF, 462 KB

english, 2015

41

Interspecific variations in attachment sites and density assessment in femaleIxodes rubicundus(Acari: Ixodidae) on domestic and natural hosts

Leon J. Fourie, Johan M. van Zyl

Journal:

Experimental and Applied Acarology

Year:

1991

Language:

english

File:

PDF, 598 KB

english, 1991

42

Contemporary South African Urbanization Dynamics

Alison Todes, Pieter Kok, Marie Wentzel, Johan Van Zyl, Catherine Cross

Journal:

Year:

2010

Language:

english

File:

PDF, 247 KB

english, 2010

43

Interrelationships in maize markets in Southern Africa II: Welfare aspects of the farmer support programme

Journal:

Development Southern Africa

Year:

1989

Language:

english

File:

PDF, 512 KB

english, 1989

44

THE EFFECTS OF INCREASED EARNINGS FROM TRADITIONAL AGRICULTURE IN LEBOWA / The effects of increased earnings from traditional agriculture in Lebowa/Die effekte van hoër inkomste vanuit tradisionele landbou in Lebowa

van Zyl, Johan, Machethe, Charles, Sartorius von Bach, Helmke, Singini, Richard

Journal:

Year:

1991

Language:

english

File:

PDF, 460 KB

english, 1991

45

DIE AARD EN OMVANG VAN RISIKO'S IN DIE RSA-LANDBOU

Journal:

Year:

1990

File:

PDF, 1.15 MB

1990

46

Submicrometer aerosols and excess CO as tracers for biomass burning air mass transport over southern Africa

Mafusire, Getrude, Annegarn, Harold John, Vakkari, Ville, Beukes, Johan Paul, Josipovic, Miroslav, van Zyl, Pieter Gideon, Laakso, Lauri

Journal:

Journal of Geophysical Research Atmospheres

Year:

2016

Language:

english

File:

PDF, 2.08 MB

english, 2016

47

Seasonal influences on surface ozone variability in continental South Africa and implications for air quality

Laban, Tracey Leah, van Zyl, Pieter Gideon, Beukes, Johan Paul, Vakkari, Ville, Jaars, Kerneels, Borduas-Dedekind, Nadine, Josipovic, Miroslav, Thompson, Anne Mee, Kulmala, Markku, Laakso, Lauri

Journal:

Atmospheric Chemistry and Physics Discussions

Year:

2018

Language:

english

File:

PDF, 3.14 MB

english, 2018

48

Selection criteria in the South African retail banking sector

Johan, Coetzee, Helena, van Zyl, Madeacute le, Tait

Journal:

AFRICAN JOURNAL OF BUSINESS MANAGEMENT

Year:

2012

File:

PDF, 119 KB

2012

49

An air quality assessment in the industrialised western Bushveld Igneous Complex, South Africa

Venter, Andrew D., Vakkar, Ville, Beukes, Johan P., Van Zyl, Pieter G., Laakso, Heikki, Mabaso, Desmond, Tiitta, Petri, Josipovic, Miroslav, Kulmala, Markku, Pienaar, Jacobus J., Laakso, Lauri

Journal:

South African Journal of Science

Year:

2012

File:

PDF, 1.58 MB

2012

50

AN ANALYSIS OF THE SUPPLY OF MAIZE IN SOUTH AFRICA / 'n Ontleding van die aanbod van mielies in Suid-Afrika

Journal:

Year:

1991

Language:

english

File:

PDF, 429 KB

english, 1991

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