|Excitonic interactions in covalently-linked porphyrin dimers
Koehorst, R.B.M. ; Benthem, L. ; Kielstra, J. ; Schaafsma, T.J. - \ 1984
In: VIth International Symposium on the Photochemistry and photophysics of coordination compounds, Royal Institution of Great Britain, London (1984)
Landbouw en welvaart in het Regentschap Pasoeroean : bijdrage tot de kennis van de sociale economie van Java
Vries, E. de - \ 1931
Wageningen University. Promotor(en): J.C. Kielstra. - Wageningen : Veenman - 311
java - landbouw - sociaal welzijn - economische sociologie - nederlands indië - cum laude - java - agriculture - social welfare - economic sociology - netherlands east indies
De Vries compiled a historical review of agricultural development in the Regency of Pasuruan (East Java) from the beginning of the nineteenth century until 1929. Special attention was given to the sugar industry, coffee, pepper, indigo culture, animal husbandry, irrigation, trade, fisheries and handicrafts. Much information was given on demographic situation, landownership, land tenure, credit provisions, human diet, use of irrigated fields (sawahs), rice varieties, rice productivity, the coconut, kapok and mangga illustrated by tables and charts. Detailed aspects of the agriculture in a small district (Poh-djentreck) near the town of Pasuruan were presented. The book ends with some suggestions and deliberations on ways of improving the welfare of the county.
Deelbouw in Nederlandsch-Indie
Scheltema, A.M.P.A. - \ 1931
Landbouwhogeschool Wageningen. Promotor(en): J.C. Kielstra. - Wageningen : Veenman - 425
pachtovereenkomsten - bewoning - pachtstelsel - nederlands indië - farm leases - tenancy - tenure systems - netherlands east indies
Scheltema described extensively the manifold terms in share-tenancy encountered in the Netherlands East Indies and reviewed share-tenancy in the world. Legal, economic and social aspects of share-tenancy in the Netherlands East Indies were thoroughly discussed. The descriptions and considerations showed, that the aspects of share-tenancy were of considerable complexity.
In general share-tenancy was an obstacle to technical improvement, but served mobility of the production factor land, and to some extent regulated the wages in agriculture and in other occupations, especially in purely farming communities. The author considered that legal control of share-tenancy was not desirable.
Indische bergcultuurondernemingen voornamelijk in Zuid-Sumatra : gegevens en beschouwingen
Hoedt, T.G.E. - \ 1930
Wageningen University. Promotor(en): J.C. Kielstra. - Wageningen : Veenman - 243
landbouw - grote landbouwbedrijven - beplantingen - gebergten - tropen - subtropen - indonesië - sumatra - nederlands indië - agriculture - large farms - plantations - mountains - tropics - subtropics - indonesia - sumatra - netherlands east indies
Highland crops was here used of tropical perennial crops (cinchona, coffee, rubber, tea), cultivated mainly in mountain districts. These crops were grown on estates, owned by western companies and managed by European staff. The organization of the highland plantation industry in Java and Sumatra, particularly South Sumatra, concerned with economic and technical interests of the estates was described in detail.
Attention was paid to natural, economic, social and legal conditions under which European planters had to work.
Particularly discussed problems were labour supply, important because the estates could not recruit sufficient labour from the local thin population, which disliked plantationwork. For that reason labour had to be imported from dense populated centres in Java. Importation was allowed only if estates issued labour contracts to future plantation coolies according to Government regulations (Coolie Ordinance).
Besides financial and social conditions labour contracts could include penal sanctions to prevent desertion of estates by coolies. Contracts without such penal sanctions were also possible (Free Coolie Ordinance). Merits and consequences of both kinds of contracts were critically discussed.
Agricultural development and results were discussed with the help of numerous figures. A map shows the position of estates, road and rail communications and distances to seaports.
De inlandsche landbouwproductie in verband met het welvaarts-probleem
Hirsch, H.T. - \ 1929
Wageningen University. Promotor(en): J.C. Kielstra. - Wageningen : Veenman - 117
rekeningen van landbouwbedrijf - boekhouding van landbouwbedrijf - nederlands indië - farm accounts - farm accounting - netherlands east indies
In an economic study of the Netherlands East Indies a distinction was made between absolute and relative deficiency in prosperity. Of the indigenous population 80 % was engaged in agriculture. Material economic development had lagged behind non-material development.
To raise the prosperity of the rural population further encouragement of the farmers was needed to intensify and rationalize their farms, and raise their production and efficiency in food and cash crops, especially in view of their rising needs and the growing population. Circumstances and conditions were then favourable for larger exports. The shift from subsistence agriculture towards export agriculture should however be gradual to allow an increase in economic resilience of the farmers.
De bevolkingstheecultuur in de residentie West-Priangan
Vroon, L.J. - \ 1928
Wageningen University. Promotor(en): J.C. Kielstra. - Wageningen : Veenman - 173
camellia sinensis - thee - java - nederlands indië - camellia sinensis - tea - java - netherlands east indies
The importance of the native tea cultivation in the West Priangan Residency, situated in the south-western part of Java, was demonstrated by the fact that approximately 45 % of the total production of 25 million kg dry tea in 1926 was prepared from leaves bought from native planters, the rest originating from estates.
There were booms in prices paid to native planters through severe competition among buying firms at certain times. At slack periods there was an extreme fall in price.
To improve this situation a purchase system was devised which guaranteed tea merchants sufficient raw material of a consistently good quality at a reasonable price and guaranteed native planters a sufficient outlet for their product Ott a price related to the price of dry tea on the world market.
The trading risk previously borne exclusively by the native planter was now more fairly spread.
Bevolkingsrietcultuur in Nederlandsch-Indie : een landbouweconomische studie
Kolff, G.H. van der - \ 1925
Wageningen University. Promotor(en): J.C. Kielstra. - Nijmegen : Thieme - 288
saccharum officinarum - suikerriet - agrarische bedrijfsvoering - nederlands indië - saccharum officinarum - sugarcane - farm management - netherlands east indies
The origin and history of sugar-cane in the Dutch East Indies were described and consecutive phases of development of Indonesian agriculture were suggested. Cultivation and processing of native sugar-cane in the 1920's and some data on trade in sugar lumps were examined.
The importance of native sugar-cane as a cash crop was stressed and needed encouragement rather than discouragement. There was some conflict between the native sugar industry in its infancy, still modest in size and technique, and the economically powerful Dutch sugar concerns with their elaborate plantations and factories. In close agreement with the Western sugar interests the Government policy favoured the status quo, both thwarting the extension of native enterprise and preventing any form of co-operation. The thesis condemned this policy and saw the common interest as the only safe solution in the future. A gradual transition was needed to a system where the local cane-growers could supply the large factories with cane for refining.
Het studiejaar 1922-1923
Kielstra, J.C. - \ 1923
Wageningen : Veenman - 11
Omvormingen in de inlandsche samenleving van Nederlandsch Oost-Indië
Kielstra, J.C. - \ 1923
Wageningen : Veenman & Zonen - 16
cultuursociologie - rurale sociologie - nederlands indië - sociale groepen - cultural sociology - rural sociology - netherlands east indies - social groups
Rede uitgesproken op den 9den Maart 1923, ter gelegenheid van de 50ste verjaardag van landbouwhoogeschool
De credietbehoefte van den Indonesischen landbouwer
Doorn, C.L. van - \ 1922
Wageningen University. Promotor(en): J.C. Kielstra. - Apeldoorn : Wekker - 123
landbouwkrediet - nederlands indië - agricultural credit - netherlands east indies
The mutual relation was studied of the communal credit system and Indonesian society. The penetration of world trade in Indonesian farming at the end of the 19th and beginning of the 20th century was influenced by population increase, demand for previously unknown products and taxation. The necessary money was obtained by growing commercial crops and by working on European plantations.
Various forms of credit before the development of trade and ways of preventing profiteering from money-lending were discussed. The Indonesian credit system was said to have derived largely from a changed conception about this society rather than from needs originating through a deep change in Indonesian society. Reasons were set out why co-operative credit had developed less adequately in many parts of Java than in India. The relationships determining the manner in which agricultural work was carried out were discussed. It was demonstrated how the granting of credit through the communal credit system could influence the establishment of share-cropping and tenancy.
Credit for buying seed, breeding livestock, land improvement and for buying land were considered. Credit for buying land would not lead to an intensifying of agriculture such as would occur in Europe.
Recht en werkelijkheid
Kielstra, J.C. - \ 1918
Wageningen : Veenman - 19
recht - landbouw - kolonialisme - politiek - law - agriculture - colonialism - politics