Modelo dinámico térmico de una cocina solar de pequeñas dimensiones en condiciones de radiación solar variable

En este trabajo se desarrolla un modelo del funcionamiento térmico de una cocina solar de pequeñas dimensiones, en el caso en que la radiación total incidente proviene de condiciones reales de campo. Con los datos de temperatura ambiente y radiación, se aplicó un modelo de evolución térmica de la temperatura de 300 ml de agua en una olla enlozada liviana, resolviendo la ecuación en este caso no paramétrico. Los resultados obtenidos fueron satisfactorios, con errores menores del 2%.A thermal dynamic model of a small solar cooker is developed and it is applied for a real field total solar radiation. With ambient temperature and solar radiation data, a model was applied for the time evolution of the temperature of 300 cc of water contained in a loosened light pot. The equation was solved for this non-parametric case. The obtained results were satisfactory, with obtained errors lower than 2%.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

African Linguistics in Central and Eastern Europe, and in the Nordic Countries

Non peer reviewe

Pacifica: Poetry International: Revolutions in Tunisian Poetry

A collection of contemporary poetry from Tunisia, including poems in translation with their French and Arabic original texts

KETANGGUHAN FRAKTUR KOMPOSIT HIGH DENSITY POLYETHYLENE BERPENGUAT SERAT ENCENG GONDOK

Penelitian ini memiliki tujuan yaitu (1) mengetahui sifat-sifat uji tarik padapengaplikasian komposit dengan HDPE dan serat eceng gondok dibidangotomotif, (2) Mengetahui sifat-sifat karakteristik HDPE dengan uji SEM.Material komposit terdiri dari serbuk HDPE sebagai matrik dan serat ecenggondok sebagai filer. Variasi fraksi volume serbuk HDPE sebagai komposisi spesimen yaitu 0%, 2%, 4%, 6%. Spesimen dicetak melalui proses injeksi molding dengan temperatur suhu 1750 C. Pengujian komposit dalam penelitian ini berupa uji kekuatan tarik menurut standart EWF. Hasil pengujian pada penelitian menyatakan bahwa untuk kekuatan maksimum komposit polimer berpengisi serat eceng gondok terdapat di komposisi serat2% yaitu 212,687 KJ/m²Kata Kunci: Serat Enceng Gondok, HDPE, Uji Tarik, Uji SEM

Bilinguisme et sociétés bilingues [Bilingualism and bilingual societies]

By stressing both the general characteristics and the complexity of those situations in which bilingualism occurs today, the author sets out a brief typology of bilingual societies which distinguishes the following categories : 1) «Developed» countries with an official language in international use ; 2) «developed» countries with an official language confined to the state within which it is spoken ; and 3) «developing» countries which have recently attained independence and possess languages or dialects which are little used outside the national frontiers and which are sometimes confined to the rôle of a popular vernacular alongside the language bequeathed by the former colonizing nation. Strictly speaking, bilingualism presents no problem in the first two types of society. In the last case, it gives rise to a major problem culminating in the national choice of an official language. The author then goes on within this context to examine the linguistic situation which has evolved in Tunisia. The linguistic situation in Tunisia was marked before independence by the opposition of French, imposed by French rule, and Arabic. The situation was complicated further by the division of the latter language into classical Arabic and its spoken dialectic variety. At the present time the linguistic debate mirrors the stratification of this society which belongs to the third category mentioned above. One current of opinion, represented by the governmental leaders and the State civil servants, is in favour of a combination of French and a form of Arabic spoken by the masses ; the educated elite aims at maintaining the norms of classical Arabic ; and, lastly, the bulk of the population favours the use of spoken Arabic. There results the division between the use of French for written communication and a form of Arabic half-way between the classical and dialectic varieties for everyday speech. In this context of Franco-Arabic bilingualism, French has not declined since independence as a result of the approval it enjoys from the governing body, and this in spite of the desire for a widespread extension of Arabic. In fact, a resolution to uphold bilingualism definitively appears to have been taken. Arabic is now defined as the language of culture and French as a medium of communication. The essential reason behind this choice lies, it would seem, in the fact the people responsible for realizing the propagation of Arab culture are in fact a French-speaking elite. The author concludes with the observation that, ultimately, language is one sign among others of a nation's wealth, and the poor or richer disposition of language can create diverse states of imbalance within both the individual and the nation. If bilingualism is desirable, it is only on condition that the imported language or languages make some contribution to the indigenous language which, in the present instance, would be Arabic.Garmadi Salah. Bilinguisme et sociétés bilingues [Bilingualism and bilingual societies]. In: Ethnies, volume 3, 1973. Linguistique et relations interethniques. pp. 37-54

Pengaruh Inflasi, Jumlah Penduduk Terhadap Pertumbuhan Ekonomi di Kabupaten/Kota Provinsi DKI Jakarta Tahun 2009-2013

Penelitian ini bertujuan untuk menguji pengaruh inflasi dan pertumbuhan penduduk terhadap pertumbuhan ekonomi di Kabupaten/Kota Provinsi DKI Jakarta periode 2009-2013. Penelitian ini menggunakan data sekunder yang didapat dari Badan Pusat Statistik (BPS) Provinsi DKI Jakarta. Metode yang digunakan dalam penelitian ini adalah analisis regresi berganda. Hasil dari penelitian ini menunjukkan bahwa: (1) inflasi tidak berpengaruh signifikan terhadap pertumbuhan penduduk di Kabupaten/Kota Provinsi DKI Jakarta. (2) jumlah penduduk berpengaruh signifikan terhadap pertumbuhan ekonomi di Kabupaten/Kota Provinsi DKI Jakarta. (3) inflasi dan jumlah penduduk berpengaruh secara bersama-sama (simultan) dan signifikan terhadap pertumbuhan ekonomi di Kabupaten/Kota Provinsi DKI Jakart

Remarques sur la syntaxe du français de Tunisie

Garmadi-Le Cloirec Juliette. Remarques sur la syntaxe du français de Tunisie. In: Langue française, n°35, 1977. Fonctionalisme et syntaxe du français, sous la direction de Denise François. pp. 86-91

Berbers and Arabs: Tracing the genetic diversity and history of Southern Tunisia through genome wide analysis

Objectives: Tunisia has been a crossroads for people from Africa, Europe, and the Middle East since prehistoric times. At present, it is inhabited by two main ethnic groups, Arabs and Berbers, and several minorities. This study aims to advance knowledge regarding their genetic structure using new population samplings and a genome-wide approach. Materials and Methods: We investigated genomic variation, estimated ancestry components and dated admixture events in three Berber and two Arab populations from Southern Tunisia, mining a dataset including Middle Eastern, sub-Saharan, and European populations. Results: Differences in the proportion of North African, Arabian, and European ancestries and the varying impact of admixture and isolation determined significant heterogeneity in the genetic structure of Southern Tunisian populations. Admixture time estimates show a multilayer pattern of admixture events, involving both ethnolinguistic groups, which started around the mid XI century and lasted for nearly five centuries. Discussion: Our study provides evidence that the relationships between genetic and cultural diversity of old and new inhabitants of North Africa in southern Tunisia follow different patterns. The Berbers seem to have preserved a significant part of their common genomic heritage despite Islamization, Arab cultural influence, and linguistic diversity. Compared to Morocco and Algeria, southern Tunisian Arabs have retained a higher level of Arabian ancestry. This is more evident in the semi-nomad R'Baya, who have kept their original Bedouin lifestyle, than in the population from Douz, who have undergone multiple events of stratification and admixture