Articles by Author: Etienne Tchoffo Houdji

Search results for Etienne Tchoffo Houdji

We found 9 results for you
  1. Operation and maintenance of back-up photovoltaic systems: An analysis based on a field study in Cameroon

    Operation and maintenance of back-up photovoltaic systems: An analysis based on a field study in Cameroon

    This work is an analysis of the data collected from 20 photovoltaic installations all over Cameroon. The objectives are to study the causes of the breakdown of the different installations and propose maintenance strategies to solve them and to evaluate...
  2. Sexual Responsibility Among Mozambican Adults

    Sexual Responsibility Among Mozambican Adults

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    We studied sexual responsibility among Mozambican adults living in the area of Maputo (n=451; Mozambican age range = 18–35 years; females= 218; males = 233). Participants completed the Sexual Practice/Sexual Responsibility scale (Hendrick & Hendrick, 1987,1995). Data were analyzed using...
  3. Realisation of two adjacent high tones: Acoustic evidence from Northern Sotho

    Realisation of two adjacent high tones: Acoustic evidence from Northern Sotho

    Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies
    We present findings of a multi-speaker production study that was undertaken to investigate the realisation of two adjacent high tones within the verb word in Northern Sotho, a Southern Bantu language. Experimental tokens are selected to ensure that the high...
  4. High prevalence of HIV and malaria co-infection in urban Douala, Cameroon

    High prevalence of HIV and malaria co-infection in urban Douala, Cameroon

    Item type: Journal Article • Journal: African Journal of AIDS Research
    A prospective cohort study was undertaken among 684 adult hospital attendees in Douala, Littoral Province, Cameroon. The objectives were to determine the prevalence of HIV/malaria co-infection and to determine and compare the prevalence of some parasitological, haematological and clinical parameters...
  5. Phonetics of intonation in South African Bantu languages

    Phonetics of intonation in South African Bantu languages

    Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies
    Much is already known about the prosodic systems of the indigenous South African languages from descriptions and analyses in the existing literature. All of the existing work has been carried out in the field of African studies or formal linguistics...
  6. Vowel variation in Southern Sotho: an acoustic investigation

    Vowel variation in Southern Sotho: an acoustic investigation

    Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies
    For the development of Human Language Technologies such as automatic speech recognition systems or text-to-speech systems, exact acoustic and phonological information of the language in question is essential. In the case of Southern Sotho, the current study is a first...
  7. Realisations of a single high tone in Northern Sotho

    Realisations of a single high tone in Northern Sotho

    Item type: Journal Article • Journal: Southern African Linguistics and Applied Language Studies
    This article reports on a production study that investigates the realisation of a single high tone in the verbal constituent in Northern Sotho, a Bantu language spoken in South Africa. The parameters of variation investigated are based on existing descriptive...
  8. Population density and habitat preferences of forest duikers in Moukalaba-Doudou National Park, Gabon

    Population density and habitat preferences of forest duikers in Moukalaba-Doudou National Park, Gabon

    Item type: Journal Article • Journal: African Zoology
    We conducted a line-transect survey via direct observation to estimate the densities of forest duikers in Moukalaba-Doudou National Park, Gabon. Five 2-km line transects were established in different vegetation types, and each transect was walked at 1.0 km/h. We also...
  9. Modelling the effects of petroleum product contaminated sand on the compressive strength of concretes using fuzzy logic and artificial neural networks: A case study of diesel

    Modelling the effects of petroleum product contaminated sand on the compressive strength of concretes using fuzzy logic and artificial neural networks: A case study of diesel

    In this study an artificial neural network (ANN) and fuzzy logic (FL) were used to predict the compressive strength of concrete produced with diesel contaminated sand. Concrete was produced using sand contaminated with diesel at 0, 0.5, 1, 1.5, 2,...