Lugha ni chombo muhimu sana cha mawasiliano kilichoundwa na sauti za nasibu za kusemwa na kutumiwa na jamii ya utamaduni fulani. Jinsi ambavyo zipo jamii nyingi za tamaduni mbalimbali duniani, vivyo hivyo ziko lugha mbalimbali zilizoundwa kukidhi haja ya mawasiliano ya tamaduni mbalimbali. Maingiliano ya jamii zenye tamaduni na lugha mbalimbali yanayotokana na mashirikiano katika shughuli za biashara na nyinginezo za kijamii, huzusha haja ya kuwepo kwa lugha moja itakayoweza kuwaungaanisha watu hao wenye tamaduni na lugha mbalimbali. Maingiliano kama hayo yanaweza kuwa katika viwango mbalimbali.

Over 50 years ago, Marshall McLuhan (2003), a specialist in communication issues, said that the world is becoming smaller and smaller every starting day, a result of the emergence of modern communication around the world. This situation has given birth to the conept `new technology´. This article will break down this new concept by looking at it through the lens of oral literature, which is used in Swahili communities. However, oral Swahili literature uses Kiswahili language, which is the languagge of communication at different levels throughout East and central Africa. The article will examine the ideals and opinions connected to oral literature described in the existing academic literature, and as one of the genres of narrative literature. It will look at the way in which the concept of new technology is explained by specialists, and in which ways this connects to oral literature. Advantages and effects which came about in the society after the coming of this notion will be discussed. The article ends with a conclusion and possible recommendations.

Tamthilia ya Kiswahili imedhihirisha, kwa njia moja au nyingine, uhusiano wa kimwingilianomatini. Makala haya yanadhamiria kuchunguza viwango na aina za mwingilianomatini baina ya tamthilia mbili za Kiswahili. Tamthilia hizi ni Mashetani (Hussein 1971) na Kijiba cha Moyo (Arege 2009). Tathmini hii inaongozwa na nadharia ya mwingilanomatini. Tumeteua na kuhakiki tamthilia hizi kwa misingi kwamba, kwa muda mrefu, Ebrahim Hussein ameaminika kuwa mmojawapo wa watunzi bora wa tamthilia ya Kiswahili katika eneo la Afrika Mashariki. Wahakiki wa fasihi wanaelekea kukubalia na kwamba Ebrahim Hussein ameathiri watunzi wengi wa baadaye wa tamthilia kimtindo, kimaudhui na usawiri wahusika. Lengo la makala haya ni kujaribu kuonesha jinsi tamthilia za Mashetani na Kijiba cha Moyo zinavyofanana kwa kuchunguza viwango vya mwingilianomatini baina ya tamthilia hizo kwa kurejelea, motifu, maudhui, matumizi ya lugha, na wahusika. Je, ni kwa kiwango gani mtunzi wa Kijiba cha Moyo ameathiriwa na mtunzi wa Mashetani? Je, amemnukuu, kudondoa au kumwiga mtangulizi wake kwa kiwango gani?

Lugha ya Kiswahili imeenea na kukua kiasi cha kuweza kupambana na zingine katika ngazi za kimataifa kwenye mfumo wa sasa wa utandawazi. Hata hivyo, Kiswahili hakiwezi kupata fanaka inayotarajiwa huko nje iwapo hakithaminiwi na kudhaminiwa nyumbani (Afrika Mashariki). Bado lugha ya Kiswahili inakumbana na pingamizi nyingi mno; na miongoni mwa vikwazo hivyo ni mielekeo ya lugha inayobainika katika jamii. Makala hii inajikita zaidi katika mielekeo ya viongozi wa Afrika Mashariki, na wasomi wa Kiswahili kuhusu nafasi na umuhimu wa Kiswahili. Viongozi na wasomi wana ushawishi mkubwa sana kutokana na nafasi yao katika jamii. Wote wanaheshimika na kuenziwa; viongozi kutokana na mamlaka waliyopewa, na wasomi kwa sababu ya maarifa waliyonayo. Kutokana na ukweli huo, tabia na mienendo yao, pamoja na matamko yao mbalimbali yana athari kubwa sana katika jamii. Mara nyingi, watu wengi hupenda kuiga wayafanyayo; hali inayobainika pia katika matumizi ya lugha. Kabla ya kuijadili mielekeo na matumizi yao ya lugha, maswala mawili muhimu yanayochangia ujenzi wa hiyo mielekeo katika jamii yatazungumziwa: thamani ya lugha, na zoezi la kujifunza lugha ya pili.

Book review: In 2004 the long awaited second edition of the Standard Swahili - Swahili Dictionary, edited by the Insitute of Kiswahili Research (TUKI) at the University of Dar es Salaam, appeared. With this publication TUKI has once again confirmed its leading role in the field of Swahili lexicography in East Africa. it is up to date, containing new words and phrases which are in use in East Africa in order to cope with the development in science and technology, society, economics and globalization.

Historically the culture of the Comoro Islands shows a strong relationship to the Swahili culture of the East African coast. Archeology, written and oral history have impressively documented these bonds dating back not less than a thousand years. The appearance of so called twarab in the first decades of the 20th Century once more demonstrated the closeness of this cultural imaginary that links the Comoros to the Swahili world, and beyond to include the predominantly Islamic cultures of the Western Indian Ocean. The paper is a first approach to the history of twarab on one island, Ngazidja, until the mid-1960s. It also addresses the question of language use, especially the relationship between East Coast and Comorian varieties of Swahili, and the influence of the Swahili poetic canon on the practice of Ngazidjan poets and singers. The orthography of names and place names follows Comorian conventions. A distinction is made between `twarab` and `taarab`, the former is the Comorian rendering and refers to the Comorian style, while the latter designates the East African Coast or Swahili variant.

The essay critically discusses the confusing state of the various Swahili language policies and studies brought forth in the colonial and post-colonial periods and examines the historical factors of the diversity within the Swahili language, which was once confined to the coastal area and later spread to the present area of distribution. The discussion focusses on the construction of Standard Swahili and the status of Swahili in regard to other East African languages. Special criticism is raised against recent East African and other authors, who wrote on the apparent unity of the Swahili language which they see as a result of the modern Tanzanian language policy.

Lugha ni chombo muhimu sana cha mawasiliano kilichoundwa na sauti za nasibu za kusemwa na kutumiwa na jamii ya utamaduni fulani. Jinsi ambavyo zipo jamii nyingi za tamaduni mbalimbali duniani, vivyo hivyo ziko lugha mbalimbali zilizoundwa kukidhi haja ya mawasiliano ya tamaduni mbalimbali. Maingiliano ya jamii zenye tamaduni na lugha mbalimbali yanayotokana na mashirikiano katika shughuli za biashara na nyinginezo za kijamii, huzusha haja ya kuwepo kwa lugha moja itakayoweza kuwaungaanisha watu hao wenye tamaduni na lugha mbalimbali. Maingiliano kama hayo yanaweza kuwa katika viwango mbalimbali.

The East African Plateau provides a spectacular example of geodynamic plateau uplift, active continental rifting, and associated climatic forcing. It is an integral part of the East African Rift System and has an average elevation of approximately 1,000 m. Its location coincides with a negative Bouguer gravity anomaly with a semi-circular shape, closely related to a mantle plume, which influences the Cenozoic crustal development since its impingement in Eocene-Oligocene time. The uplift of the East African Plateau, preceding volcanism, and rifting formed an important orographic barrier and tectonically controlled environment, which is profoundly influenced by climate driven processes. Its location within the equatorial realm supports recently proposed hypotheses, that topographic changes in this region must be considered as the dominant forcing factor influencing atmospheric circulation patterns and rainfall distribution. The uplift of this region has therefore often been associated with fundamental climatic and environmental changes in East Africa and adjacent regions. While the far-reaching influence of the plateau uplift is widely accepted, the timing and the magnitude of the uplift are ambiguous and are still subject to ongoing discussion. This dilemma stems from the lack of datable, geomorphically meaningful reference horizons that could record surface uplift. In order to quantify the amount of plateau uplift and to find evidence for the existence of significant relief along the East African Plateau prior to rifting, I analyzed and modeled one of the longest terrestrial lava flows; the 300-km-long Yatta phonolite flow in Kenya. This lava flow is 13.5 Ma old and originated in the region that now corresponds to the eastern rift shoulders. The phonolitic flow utilized an old riverbed that once drained the eastern flank of the plateau. Due to differential erosion this lava flow now forms a positive relief above the parallel-flowing Athi River, which is mimicking the course of the paleo-river. My approach is a lava-flow modeling, based on an improved composition and temperature dependent method to parameterize the flow of an arbitrary lava in a rectangular-shaped channel. The essential growth pattern is described by a one-dimensional model, in which Newtonian rheological flow advance is governed by the development of viscosity and/or velocity in the internal parts of the lava-flow front. Comparing assessments of different magma compositions reveal that length-dominated, channelized lava flows are characterized by high effusion rates, rapid emplacement under approximately isothermal conditions, and laminar flow. By integrating the Yatta lava flow dimensions and the covered paleo-topography (slope angle) into the model, I was able to determine the pre-rift topography of the East African Plateau. The modeling results yield a pre-rift slope of at least 0.2°, suggesting that the lava flow must have originated at a minimum elevation of 1,400 m. Hence, high topography in the region of the present-day Kenya Rift must have existed by at least 13.5 Ma. This inferred mid-Miocene uplift coincides with the two-step expansion of grasslands, as well as important radiation and speciation events in tropical Africa. Accordingly, the combination of my results regarding the Yatta lava flow emplacement history, its location, and its morphologic character, validates it as a suitable “paleo-tiltmeter” and has thus to be considered as an important topographic and volcanic feature for the topographic evolution in East Africa. / Das Ostafrikanische Plateau ist ein eindrucksvolles Beispiel für aktive, kontinentale Grabenbildung, aber auch für geodynamische Hochebenenbildung mit weitreichendem klimatischen Einfluss auf die gesamte Region. Als integraler Bestandteil des Ostafrikanischen Grabensystems beläuft sich die mittlere Höhe des Plateaus auf durchschnittlich 1000 m ü.NN. Seine Lage korreliert gut mit der Präsenz einer halbkreisförmigen negativen Bouguer-Schwereanomalie, die an den Aufstieg eines Manteldiapirs im Untergrund gekoppelt ist. Dieser prägte die känozoische Krustenentwicklung seit seinem Aufstieg im Eozän-Oligozän. Die Hebungsgeschichte und topographische Entwicklung des Hochlandes steht seither in enger Beziehung zum einsetzenden Vulkanismus, der Bildung erster Abschiebungssysteme und führte schließlich zur Entwicklung des heutigen Vollgrabensystems. Neueste Hypothesen lassen den Schluss zu, dass topographische Veränderungen als dominierende Einflussgrößen atmosphärischer Zirkulationsmuster sowie der regionalen Niederschlagsverbreitung anzusehen sind. Zusätzlich werden diese Prozesse durch die äquatoriale Lage des Ostafrikanischen Plateaus verstärkt und die Hebung dieser Region oft mit wichtigen Klima- und Umweltveränderungen in Ostafrika und angrenzende Gebiete in Verbindung gebracht. Während der weitreichende klimatische Einfluss des Hochlandes größtenteils akzeptiert ist, sind Zeitpunkt und Ausmaß seiner Heraushebung nicht eindeutig bestimmt und daher noch immer Grundlage bestehender Diskussionen. Diese Zwangslage hat ihre Ursache im Fehlen aussagekräftiger und datierbarer Referenzhorizonte. Um den Hebungsbetrag zu quantifizieren und Beweise signifikanten Reliefs vor der Entwicklung des Grabensystems entlang des Ostafrikanischen Hochlandes zu erbringen, analysierte und modellierte ich einen der längsten terrestrischen Lavaströme. Dieser vor 13,5 Ma abgelagerte Yatta-Lavastrom hat mit 300 km Länge seinen Ursprung in der Region der heutigen östlichen Grabenschulter des zentralen Kenia-Rifts. Die phonolitische Lava ergoss sich entlang eines Flussbettes, das einst die östliche Flanke des Hochlandes entwässerte. Aufgrund unterschiedlicher Erosionspotentiale bildet der Lavastrom gegenwärtig ein positives Relief und befindet sich oberhalb des Athi Flusses, der parallel zum Paläofluß, und somit versetzt zu seinen früheren Verlauf, strömt. Mein Ansatz der Lavastrom-Modellierung basiert auf einer Methode, die das Fließverhalten einer beliebigen Lava in Abhängigkeit von Temperatur und Magmenzusammensetzung in einem rechtwinkligen Kanal berechnet. Die wesentlichen Wachstumsmuster des Lavastroms sind durch ein eindimensionales Modell beschrieben, wobei Newtonsches Fließverhalten im Innern hinter der Lavastromfront von der zeitlichen Entwicklung der Viskosität und/oder der Fließgeschwindigkeit bestimmt wird. Vergleiche meiner Resultate mit verschiedenen Magmenzusammensetzungen zeigen, dass sich lange, kanalisierte Lavaströme mit hohen Ergussraten und schneller Platznahme bilden können. Dies geschieht unter annähernd isothermalen Bedingungen und erfordert laminares Fließen. Die Integration der Yatta- Lavastrom-Dimensionen und der bedeckten Paläotopographie (Neigungswinkel) in das Modell, erlaubte es mir die Topographie des Ostafrikanischen Hochlandes vor der Grabenbildung zu modellieren. Das Ergebnis der Modellierung ergibt einen Neigungswinkel von mindestens 0,2° und impliziert, dass der Lavastrom seinen Ursprung in einer Höhe von mindestens 1400 m ü.NN gehabt haben muss. Somit existierte bereits vor 13,5 Ma hohe Topographie in der heutigen Region des zentralen Kenia-Rifts. Diese abgeleitete regionale Hebungsgeschichte im mittleren Miozän korreliert mit der zweistufigen Ausbreitung der Graslandschaften, sowie dem Aufkommen neuer Arten im tropischen Afrika. Die Kombination aus Fließverhalten, Entstehungsort und morphologischer Eigenschaften macht den Yatta-Lavastrom zu einem “Paläoneigungsmesser” und wichtigen vulkanischen Untersuchungsobjekt für die topographische Entwicklung in Ostafrika.

This article deals with the communicative uses of the printed wrap cloth kanga. Specifically I will show how the kanga is constituted as a communicative sign and is at the core of ambiguation processes that are pervasive to this communicative genre. Because of its high degree of ambiguity the question arises whether we can, for communication by way of kanga, still speak of communication in any sense. In my opinion, we can only do so if it is possible to analyze the communication process within existing models of communication. Starting from the hypothesis that the kanga indeed has communicative potential communication is understood as social interaction, whereby the focus is not solely on meanings in a pragmatic or semantic sense, but rather on social meaning, i.e. the negotiation of relationships between the interactants in an area of tension between individual, social and cultural interests (within which meaning in a linguistic sense does play a role, too) (Anderson & Meyer 1988, Burgoon et aL 1996). This will be shown in the fust part of the analysis. In the second part of this article I will describe and explain the role of the medium kanga within this process of ambiguation. This article is based on material collected during two field periods in 1994/ 1995 and 1996 in Mombasa and, from 1995 onwards, in various archives in the Netherlands and Switzerland.