Small hydroelectric power demonstration projects /

"Program opportunity notice (PON) number DE-PN-07-79-ID-12043."

Sensations d'Italie. (Toscane--Ombrie--Grande Grèce)

"Journal d'une longue excursion faite dans l'automne de 1890 à travers la Toscane, l'Ombrie, les Marches, la terre d'Otrante et la Calabre."--Pref.

Kyŏngyŏn kangŭi /

Photographic reproduction of the Kyujanggak pon in the Seoul National University Library.

Kyŏngyŏn kosa pirye.

Photographic reproduction of the Kyjanggak pon in the Seoul National University Library.

Feminismos

Feminismos, de Olga Castro e María Reimóndez, é unha guía de viaxe a través da cartografía dos feminismos que responde á rica biodiversidade real dos feminismos no mundo e tamén en Galicia. Con vontade divulgativa, este libro dá conta do movemento social que máis cambiou as estruturas sociais para mellorar a vida das persoas, producindo a teoría e a práctica máis plural e transformadora. Desde ese espírito enciclopédico que se dirixe a un amplo público non especialista, Feminismos presenta as achegas e os logros dos movementos feministas na mellora das sociedades en todo o mundo. En palabras da autora do limiar, Belén Martín Lucas, da man de Castro e Reimóndez coñecemos «o traballo dos colectivos de mulleres, pensadoras e artistas, desde Galicia a Xapón, pasando polas repúblicas da antiga Unión Soviética, China, India ou África subsahariana, por mencionar algunhas das áreas incluídas. Este mapa dos feminismos na xeografía e a historia pon de manifesto a gran diversidade de estratexias contra a discriminación por xénero desenvolvidas en contextos culturais, políticos e sociais concretos».Poñendo de manifesto a mención especial que merece a sección dedicada aos feminismos en Galicia, a profesora Belén Martín Lucas conclúe asegurando que «as reflexións de Castro e Reimóndez convídannos a examinar o noso etnocentrismo para decatármonos das contribucións coas que as activistas e pensadoras doutras culturas melloran o noso mundo, á vez que tamén poñen en valor as teorías e prácticas feministas xeralmente excluídas dos manuais do feminismo, as cales tenden a limitarse ao occidental (europeo e norteamericano case sen excepción).

Ideoloxías textuais e paratextais nas traducións de Le deuxième sexe, de Simone de Beauvoir

A análise dos textos e paratextos da obra feminista da filósofa Simone de Beauvoir Le deuxième sexe (1949, Gallimard), así como das súas posteriores traducións e reescrituras ao castelán e ao inglés, pon en evidencia o papel determinante que –sen excepcións– desempeñan as ideoloxías no labor profesional da tradución e da paratradución, infl uíndo de xeito decisivo na recepción do ben cultural (e ideolóxico) libro, tanto na súa sociedade de creación como nas sociedades receptoras da tradución. The analysis of the texts and paratexts of the feminist book Le Deuxième Sexe (1949, Gallimard) by the philosopher Simone de Beauvoir, along with its subsequent translations and rewritings into Spanish and English, demonstrates the essential role that –without exception– ideologies play in the professional work of translation and paratranslation, since they have a decisive influence on the reception of the cultural (and ideological) good, in both the society in which it is created and that in which it is received.

Gain switched multi-carrier transmitter and pilot tone based receiver for long reach access networks

A novel and cost effective long reach PON downlink scenario is proposed employing a multi-carrier transmitter and pilot tone aided direct detection at the receiver. Error free performance with QPSK and 50km transmission is presented. © 2012 OSA.

Towards the distributed core for ubiquitous superfast broadband optical access

In this paper, we describe recent architectural and technological advances of the end to end optical network architecture proposed by the DISCUS project (the DIStributed Core for unlimited bandwidth supply for all Users and Services). The two main targets of DISCUS are the principle of equivalence in the access and the reduction of optical-to-electronic conversions in the metro-core network. Technological advances and techno-economic evaluation of Long-Reach Passive Optical Networks (LR-PON), as well as the optimal metro-core node architecture and the required network control plane framework are reported. Network infrastructure sharing challenges are also discussed. © 2014 IEEE.

Cost-effective broadband GaAs IQ modulator array for long-reach OFDM-PONs

A novel modulator array integrating eight GaAs electro-optic IQ modulators is characterized and tested over long-reach direct-detected multi-band OFDM-PONs. The GaAs IQ modulators present > 22 GHz bandwidth with 3V Vpi, being suitable for a 100-km 40-Gb/s OOFDM-PON supporting up to 1024 users.

Classification of the Maximal Subsemigroups of the Semigroup of all Partial Order-Preserving Transformations

Илинка А. Димитрова, Цветелина Н. Младенова - Моноида P Tn от всички частични преобразования върху едно n-елементно множество относно операцията композиция на преобразования е изучаван в различни аспекти от редица автори. Едно частично преобразование α се нарича запазващо наредбата, ако от x ≤ y следва, че xα ≤ yα за всяко x, y от дефиниционното множество на α. Обект на разглеждане в настоящата работа е моноида P On състоящ се от всички частични запазващи наредбата преобразования. Очевидно P On е под-моноид на P Tn. Направена е пълна класификация на максималните подполугрупи на моноида P On. Доказано е, че съществуват пет различни вида максимални подполугрупи на разглеждания моноид. Броят на всички максимални подполугрупи на POn е точно 2^n + 2n − 2.

100-Gb/s point-to-point solutions for long-reach passive optical networks in sparse rural and urban areas

Long reach-passive optical networks (LR-PON) are being proposed as a means of enabling ubiquitous fiber-to-the-home (FTTH) by massive sharing of network resources and therefore reducing per customer costs to affordable levels. In this paper, we analyze the chain solutions for LR-PON deployment in urban and rural areas at 100-Gb/s point-to-point transmission using dual polarization-quaternary phase shift-keying (DP-QPSK) modulation. The numerical analysis shows that with appropriate finite impulse response (FIR) filter designs, 100-Gb/s transmission can be achieved with at least 512 way split and up to 160 km total distance, which is sufficient for many of the optical paths in a practical situation, for point-to-point link from one LR-PON to another LR-PON through the optical switch at the metro nodes and across a core light path through the core network without regeneration.

Comparison of cost- and energy-efficient signal modulations for next generation passive optical networks

Extensive numerical investigations are undertaken to analyze and compare, for the first time, the performance, techno-economy, and power consumption of three-level electrical Duobinary, optical Duobinary, and PAM-4 modulation formats as candidates for high-speed next-generation PONs supporting downstream 40 Gb/s per wavelength signal transmission over standard SMFs in C-band. Optimization of transceiver bandwidths are undertaken to show the feasibility of utilizing low-cost and band-limited components to support next-generation PON transmissions. The effect of electro-absorption modulator chirp is examined for electrical Duobinary and PAM-4. Electrical Duobinary and optical Duobinary are powerefficient schemes for smaller transmission distances of 10 km SMFs and optical Duobinary offers the best receiver sensitivity albeit with a relatively high transceiver cost. PAM-4 shows the best power budget and costefficiency for larger distances of around 20 km, although it consumes more power. Electrical Duobinary shows the best trade-off between performance, cost and power dissipation.

Compilation of downward flux observations from sediment trap deployments in the Atlantic Ocean - Contribution to EURO-BASIN's Data integration

We provide a compilation of downward fluxes (total mass, POC, PON, BSiO2, CaCO3, PIC and lithogenic/terrigenous fluxes) from over 6000 sediment trap measurements distributed in the Atlantic Ocean, from 30 degree North to 49 degree South, and covering the period 1982-2011. Data from the Mediterranean Sea are also included. Data were compiled from different sources: data repositories (BCO-DMO, PANGAEA), time series sites (BATS, CARIACO), published scientific papers and/or personal communications from PI's. All sources are specifed in the data set. Data from the World Ocean Atlas 2009 were extracted to provide each flux observation with contextual environmental data, such as temperature, salinity, oxygen (concentration, AOU and percentage saturation), nitrate, phosphate and silicate.

Distribution of neodymium isotopes and concentrations during M77/3 and M77/4

The radiogenic isotope composition of the Rare Earth Element (REE) neodymium (Nd) is a powerful water mass proxy for present and past ocean circulation. The processes controlling the Nd budget of the global ocean are not quantitatively understood and in particular source and sink mechanisms are still under debate. In this study we present the first full water column data set of dissolved Nd isotope compositions and Nd concentrations for the Eastern Equatorial Pacific (EEP), where one of the globally largest Oxygen Minimum Zones (OMZ) is located. This region is of particular interest for understanding the biogeochemical cycling of REEs because anoxic conditions may lead to release of REEs from the shelf, whereas high particle densities and fluxes potentially remove the REEs from the water column. Data were obtained between 11400N and 161S along a nearshore and an offshore transect. Near surface zonal current bands, such as the Equatorial Undercurrent (EUC) and the Subsurface Countercurrent (SSCC), which are supplying oxygen-rich water to the OMZ are characterized by radiogenic Nd isotope signatures (eNd=-2). Surface waters in the northernmost part of the study area are even more radiogenic (eNd = +3), most likely due to release of Nd from volcanogenic material. Deep and bottom waters at the southernmost offshore station (141S) are clearly controlled by advection of water masses with less radiogenic signatures (eNd=- 7) originating from the Southern Ocean. Towards the equator, however, the deep waters show a clear trend towards more radiogenic values of up to eNd=-2. The northernmost station located in the Panama basin shows highly radiogenic Nd isotope signatures in the entire water column, which indicates that particle scavenging, downward transport and release processes play an important role. This is supported by relatively low Nd concentrations in deep waters (3000-6000 m) in the EEP (20 pmol/kg) compared to locations in the Northern and Central Pacific (40-60 pmol/kg), which suggests enhanced removal of Nd in the EEP.