La Russia nella grande guerra: unità patriottica, definizioni del conflitto, rappresentazioni del nemico

L'articolo colloca lo studio dell'impero zarista durante la Prima guerra mondiale in una prospettiva pan-europea: si sofferma in particolare sull'unità patriottica nei primi mesi del conflitto, sulla legittimazione ideologica della guerra e sulla costruzione dell'immagine del nemico funzionale alla propaganda bellica

Food-Based Businesses and the Creative Class in New England\u27s Post-Industrial Cities

This master’s thesis examines how the density of food-based businesses in New England’s post-industrial urban neighborhoods relates to neighborhood demographic characteristics. The relationship between food-based businesses and demographic change has been examined in larger metropolitan areas like New York City and Chicago and has found that younger, wealthier, and more highly educated residents tend to live where there are greater densities of food businesses. However, there has been little research on the topic in New England’s post-industrial cities that have historically struggled to attract highly sought knowledge workers. I find that food business density and the share of residents employed in creative class professions is positively correlated in most cases; however, over time, the share of creative class workers and food businesses per capita has a negative relationship. Additionally, the share of residents living below the poverty line and food business densities have a significant and positive relationship. Neighborhood racial composition is a less significant factor, overall. In sum, the findings from this study suggest that food business density and creative class populations have a more nuanced relationship in regional post-industrial cities compared to larger metropolitan areas

Nuevos sitios precerámicos en la Puna Argentina

En el presente trabajo se bosqueja un complejo industrial precerámico hallado, hace un tiempo, en el valle de Santa María: Ampajango. Se trata de una industria caracterizada por bifaces, de distintas formas, asociadas a otros tipos toscos, tales como raspadores, raederas, unifaces, núcleos y lascas; trabajadas por percusión directa. Posteriormente se mencionan y describen nuevas industrias correspondientes a cazadores y recolectores no especializados: Barrancas, SII-T de Turilari y SI-Y de Yavi. En estos sitios fueron hallados materiales que están caracterizados por lascas alargadas, núcleos, lascas con escasos retoques y muy pocos bifaces toscos. Estos yacimientos, superficiales, se encuentran sobre terrazas altas. Por último se describen el sitio SII-Y de Yavi, que corresponde a una facie II de la industria de Ampajango y el sitio SI-T de Turilari donde los materiales recogidos pertenecen a cazadores especializados, caracterizados por puntas de proyectiles de tipo Ayampitín, Saladillo, asociadas a raspadores, cuchillos, lascas alargadas y núcleos con plano de percusión preparado.This work shows a industrial complex found a time ago in Sania María valley: Ampajango. It is an industry distinguished by handaxes of different types associated to other rough types as scrapers, sido scrapers, nucleus made by direct percussion. Afterwards, there are described and named new industries belonging to hunting and no particular collecters: Barrancas, SII-T of Turilari and SI-Y of Yavi. Materials were found in these places, wich are formed by prolonged flakes, nucleus, flakes with few finishing fouches and few handaxes roughs. This superficial field are found on high terrace. Finally it is described the SII-Y of Yavi site belonging to facie II of Ampajango’s industry and SI-T of Turilari site where the collected materials belong to special hunting characterized by proyectil points of Ayampitin’s tipe, Saladillo belonging to scrapers, knives, longish flakes and nucleus with prepared percussion plañe

On the type specimens of Dichromatos corupa and Dichromatos montanus (Orthoptera, Acridoidea, Melanoplinae)

The purpose of this note is to correct a nomenclatural problem associated with the names of two grasshopper species of the South American genus Dichromatos Cigliano, D. corupa and D. montanus.Fil: Cigliano, Maria Marta. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

A Perceptual Study of the Impact of Athletic Programs in Selected Community Colleges in the State of Tennessee.

The purpose of the study was to examine the economic, institutional, and human impact of athletic programs at community colleges in the Tennessee Board of Regents community college system to determine how the athletic programs affects the benefits, or lack of benefits, for students, the institutions, and the communities. Sixteen participants were interviewed: two presidents, two athletic directors, four coaches, and eight student-athletes. The student-athletes represented four different sports and came from a variety of educational backgrounds and academic standing. The primary benefits perceived for the institutions and the student-athletes were the impact on missions, enrollment, educational and athletic opportunities, and retention. The primary negative impacts perceived were the lack of preparation for college work by high school graduates inside and outside the athletic programs and the difficulties in recruiting the best academic student-athletes. Some administrative and athletic participants perceived the lack of preparation of high school graduates to do college work as a great obstacle for some student-athletes and others in the community colleges. Emergent themes included time management, the stress of maintaining dual paths in academics and athletics, and the need of good housing environment. Mentoring by coaches, motivation to progress in academics, the assistance of student development services, and faculty and staff were perceived by the student-athletes as being beneficial to their success and progress. The implication from this study is that student-athletes represent a variety of socioeconomic and diverse backgrounds that may impact educational backgrounds. They also represent a variety of academic levels that vary from year to year. Student-athletes are successful, with planning and assistance, in reaching their educational and career goals. The problem of remedial education is an obstacle for some of them, for the institution, and for the state. To become successful in increasing the number of Tennesseans who attain higher education levels, the obstacle needs to be addressed in the community college system and, more importantly, in the elementary and secondary schools

La convergenza digitale. Lo scenario di riferimento, le soluzioni su cui puntare e la grande sfida: i contenuti e la loro destrutturazione

2007-10-30Sardegna Ricerche, Edificio 2, Località Piscinamanna 09010 Pula (CA) - ItaliaContenuti Digitali: una vera rivoluzione

Observaciones sobre las características reproductoras de tres especies de Eunicidae (Polychaeta) asociadas a praderas de la fanerógama marina Posidonia oceanica en el Mar Mediterráneo

Observations on the reproductive features are provided for three species of Eunicidae (Lysidice ninetta Audouin and Milne Edwards, Lysidice collaris Grube and Nematonereis unicornis (Grube)). They all occur in Posidonia oceanica meadows as borers in the sheaths. The material examined was collected during several studies on P. oceanica meadows conducted at various times of the year and in different years along the coasts of Sardinia and the Ischia islands (Tyrrhenian Sea), and Otranto (Southern Adriatic Sea). All individuals of the three species were measured (width 3rd chaetiger, diameter of eyes), and checked for presence of gametes. In each of the females recognized, egg diameter was measured. To integrate the observations, living specimens were collected in March 2003 and reared in the laboratory until August 2003 to check for gamete maturation; mature males were fixed for analysis of the structure of the spermatozoa by transmission electron microscopy (TEM). All three species studied are gonochoric. For both species of Lysidice gametes occurred in individuals with a width greater than 0.8 mm. The overall scarcity of mature males and females observed with respect to the total number of specimens collected is probably due to the dimensional constraint exerted by the sheaths. In Lysidice spp. specimens with small developing oocytes were observed in January-February and reached their maximum diameter between June and August (157 µm). Gametes were located mainly in the posterior part of the body, and an enlargement of the eyes (almost doubled in size) characterized mature specimens close to spawning. N. unicornis is a smaller species, and it is less frequent in Posidonia sheaths than Lysidice spp.; individuals with gametes had a width greater than 0.55 mm. A few mature specimens were observed between March and May with a maximum egg diameter of about 155 µm. In this species maturation of the gametes is coupled with a huge enlargement of the eyes (ten-times larger than in immature individuals), while the posterior part of the body is swollen and full of mature gametes, indicating reproduction by schizogamy. Analysis of mature spermatozoa of the three eunicids revealed a similar morphology, which is that of an “ect-aquasperm” type, typical of many free-spawning species with external fertilization. The nucleus is round and globose (2.5 µm diameter) and the acrosome, slightly different among the three species, has the general shape of a truncate sub-cone.Se discuten algunas caracteristicas generales de la biología de la reproducción de tres especies de poliquetos Eunicidae (Lysidice ninetta Audouin and Milne- Edwards, Lysidice collaris Grube y Nematonereis unicornis (Grube)). Estas especies fueron obtenidas en praderas de Posidonia oceánica, en donde viven asociadas a las escamas de las hojas. El material examinado fue recolectado en diferentes anos y en praderas de P. oceánica distribuidas en la costa de Cerdeña, de la isla de Ischia (Mar Tirreno), y de Otranto (Mar Adriatico Sur). Todos los individuos fueron medidos (anchura del tercer segmento, diámetro de los ojos), y analizados para observar en ellos la presencia de los gametos. En cada hembra se midió el diámetro de los huevos. El desarrollo de otros individuos fue observado en el laboratorio desde Marzo a Agosto 2003 con la finalidad de estudiar la maduración de los gametos. Los machos maduros fueron fijados para el análisis de la ultra-estructura de los espermatozoos al Microscopio Electrónico. Las tres especies estudiadas son gonocóricas (sexos separados). Para las dos especies del genero Lysidice las hembras con huevos siempre se presentaron en individuos superiores en anchura a 0,8 mm. La escasez de hembras y machos maduros en relación al total de individuos está probablemente relacionado con las limitaciones que suponen las dimensiones y espesor de las escamas de Posidonia. Individuos de Lysidice spp. con huevos pequeños en desarrollo se observaron desde Enero-Febrero; los oocitos alcanzaron el máximo diámetro en Junio y Agosto (157 μm). Los gametos se localizaron preferentemente en la parte posterior del cuerpo, y cuando los individuos alcanzaron la madurez, sus ojos se hicieron más anchos (casi el doble en su diámetro). N. unicornis es una especie más pequeña, y menos frecuente en las escamas de Posidonia que Lysidice spp. Los individuos con gametos presentan anchuras superiores a 0,55 mm. Algunos individuos maduros fue observado desde Marzo a Mayo, con diámetros máximos de los huevos de casi 155 μm. En esta especie la madurez se relaciona con un enorme aumento del diámetro de los ojos (diez veces mas anchos que en individuos inmaduros), y en la dilatación de la parte posterior del cuerpo llena de gametos maduros; esta característica indica una reprodución de tipo eschizogámico. La ultra-estructura de los espermatozoos maduros es muy similares en las tres especies de Eunicidae, de tipo”ect-aquasperm”, típicas des especies con fecundación externa. El núcleo (2,5 μm en diámetro) es redondo y globular, y el acrosoma, que es un poco diferente entre las especies, es de forma general en cono truncado. &nbsp

The high-Andean Jivarus Giglio-Tos (Orthoptera, Acridoidea, Melanoplinae): Systematics, phylogenetic and biogeographic considerations

The high-Andean genus Jivarus Giglio-Tos from Ecuador, Colombia and Peru is revised. Morphological cladistic analysis indicated that Jivarus montanus and the new species digiticercus. sp.n. and rugosus. sp.n. must be treated as a separate genus, Maylasacris gen.n. The remaining species included in the analysis are assigned to the genus Jivarus, for which the following six species groups are identified: americanus group, antisanae group, carbonelli group, cohni group, pictifrons group and jagoi group. Twenty-nine species are recognized for Jivarus, with ten described as new: J. rectus. sp.n., J. megacercus sp.n., J. spatulus. sp.n., J. auriculus. sp.n., J. riveti. sp.n., J. sphaericus. sp.n., J. discoloris. sp.n., J. profundus. sp.n., J. ronderosi. sp.n. and J. guarandaensis. sp.n. The following new synonymies are proposed: Jivarus albolineatus Ronderos with J. antisanae (Bolivar) syn.n., J. cerdai Ronderos and J. osunai Ronderos with J. alienus (Walker) syn.n., and J. rubriventris Ronderos with J. ecuadorica (Hebard) syn.n.; the new combinations Jivarus ecuadorica (Ronderos) comb.n. and Maylasacris montanus (Ronderos) comb.n. are proposed. Keys to the species of the genera and a review of the morphological characters defining the taxa are provided. Patterns of distribution of the clades coincide with the geography of the northern Andes of Colombia and Ecuador. Areas of endemism of the Jivarus species groups and Maylasacris are delimited by both the high-altitude curves, including transverse zones, and the drier climates of the intra-Andean valleys, clearly indicating recent, post-glacial palaeogeography, as shown also in vegetation distributions. This paper has been formatted with many embedded links to images of type and paratype specimens, maps based on geo-referenced specimen data and species keys available on the Orthoptera Species file online (http://orthoptera.speciesfile.org).Fil: Cigliano, Maria Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; ArgentinaFil: Amedegnato, Christiane. Muséum National d'Histoire Naturelle; Franci

Prevalence and infection intensity of the biocontrol agent Paranosema locustae (Microsporidia) in field-collected, newly-associated hosts (Orthoptera: Acrididae: Melanoplinae)

Host range, prevalence, and infection intensity of Paranosema locustae in grasshoppers at an establishment site in Patagonia, Argentina, were recorded. Results agreed with earlier observations at other introduction-establishment areas. Affected grasshoppers were melanoplines (Baeacris punctulatus, Dichroplus elongatus, Dichroplus maculipennis). Sporulation was not observed in instars I, II, and III.Fil: Lange, Carlos Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaFil: Cigliano, Maria Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; Argentin