1,721,220 research outputs found
An update on Termitomorpha Wasman (Coleoptera: Staphylinidae) including a new species, species redescriptions and geographic extension
No full textSilva, Ruan Felipe Da, Caron, Edilson, Carvalho-Filho, Fernando Da Silva (2022): An update on Termitomorpha Wasman (Coleoptera: Staphylinidae) including a new species, species redescriptions and geographic extension. Zootaxa 5205 (1): 1-25, DOI: https://doi.org/10.11646/zootaxa.5205.1.
Termitomorpha Wasman
No full textKey to the species of Termitomorpha Adapted from Caron et al. (2018) 1 External margin of metafemur with arcuate emargination in proximal 2/3 (Fig. 3F)................ T. fissipennis (Casey) - External margin of metafemur without arcuate emargination (Figs. 9F, G, 16F).................................... 2 2 Mandible with medial teeth (Figs. 2B, 8B, 15B)............................................................ 3 - Mandible without medial teeth (Kistner 2006, fig. 25B–C)...................................... T. huachii Seevers 3 Pronotum with sinuous lateral margin..................................................................... 4 - Pronotum with straight lateral margin (Fig. 15C; Caron et al. (2018), fig. 45)..................................... 7 4 Mentum with distal margin almost straight................................................................. 5 - Mentum with distal margin conspicuously arcuate........................................................... 6 5 Prosternum broadly elevated at middle.................................................... T. meinerti Wasmann - Prosternum not elevated at middle................................................... T. costaricensis (Seevers) 6 Antennal article I with about the length of articles II to V combined (Caron et al. 2018, fig. 7)............................................................................................... T. sinuosa Caron, Bortoluzzi & Rosa. - Antennal article I nearly the length of articles II to IV combined (Fig. 8E)........................ T. goeldiana sp. nov. 7 Pronotum with anterior margin strongly notched medially (Caron et al. (2018), fig. 45)....... T. alata Caron & Bortoluzzi - Pronotum with base slightly notched medially (Fig. 15C)....................................... T. manni (Seevers)Published as part of Silva, Ruan Felipe Da, Caron, Edilson & Carvalho-Filho, Fernando Da Silva, 2022, An update on Termitomorpha Wasman (Coleoptera: Staphylinidae) including a new species, species redescriptions and geographic extension, pp. 1-25 in Zootaxa 5205 (1) on pages 23-24, DOI: 10.11646/zootaxa.5205.1.1, http://zenodo.org/record/728508
Waste Management as a Smart Cognitive System: The Wasman Case
No full textInternational audienceThe Wasman (Waste Management as Policy Tools for Corporate Governance) project is a program comprising six southern European countriesthat share best practices to achieve collective and intelligent decisions regarding waste management. The partnership among the actors is envisioned as a social structure in a socially distributed cognitive system that is the product of action and the conditional element of future action. The authors call this a system of “intelligent cognitive waste management.”
Study of organic semiconductor based photovoltaic devices: light sensors and solar cells / Karwan Wasman Qadir
No full textRecently, organic photovoltaic devices (OPVDs) have been extensively studied and demonstrated as promising candidates for light sensing applications. The novel materials are used in optoelectronic applications, utilizing their intrinsic physical, chemical and electrical characteristics. Organic semiconductors offer many physical and chemical properties that can be easily tailored by incorporating functional groups or manipulating physical conditions to meet specific requirements. The best feature of organic semiconductors is their solution processability at room temperature using simple and low cost deposition techniques. Aiming at the interesting properties of organic semiconductors, in this thesis, we have extensively explored organic semiconductors based solar cells and light sensors for optoelectronic applications. Dye sensitized photo sensors using water soluble organic photo sensitizer, Nickel (II) phthalocyanine-tetrasulfonic acid tetrasodium salt (NiTsPc) have been fabricated and investigated. Two different types of TiO2 films (untreated and NaOH-treated) are prepared to serve as anodes for the sensors. Both films are subsequently sensitized by NiTsPc using aqueous solution. Commercially available Iodolyte Z100 and platinum coated indium doped tin oxide (ITO) are used as electrolyte and cathode, respectively. The NaOH-treated sensor demonstrates 2.81 times increase in sensitivity in terms of photo-conductivity as compared to the untreated sensor. The NaOH-treated sensor, however, surpasses the other sensor in terms of response/recovery times and stability in plateau values of the photocurrent. The proposed photosensor is eco-friendly and economical for commercial applications. A binary blend of two polymers, poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta [2,1-b;3,4-b’]dithiophene)-alt-4,7(2,1,3-benzothiadiazole)] (PCPDTBT) and poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) as a sensitizer has been employed for a visible light dye sensitized photo sensor (DSPS). The proposed combination of the polymers covers almost the entire visible light spectrum.
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The dependence of the current generation in the dye sensitized photo sensor is investigated as a function of varied incident light intensities. The output shows a linear relation as a function of incident light in the range of 0-30000 lx. The photo-conductivity sensitivity of the dye sensitized photo sensor is about 2.02×10−5 Sm/W. The average response time of the sensor is found ∼382 ms. In addition to consistency and repeatability, the fabrication of this sensor is economical and environmentally friendly. The effect of thermal annealing on the optical, morphological and photovoltaic properties of bulk heterojunction solar cell based on the poly[2,5-bis(3-dodecylthiophen-2-yl)thieno[3,2-b]thiophene] (PBTTT-C12) and[6,6]-phenyl C71-butyric acid methyl ester (PC71BM) has been investigated. The ITO/PEDOT:PSS/PBTTT-C12:PC71BM/Al devices are fabricated on glass substrates from the PBTTT-C12:PC71BM (1:4) solution in dichlorobenzene. Atomic Force Microscopy (AFM) is used to investigate the surface morphology of the PBTTT-C12:PC71BM thin films. The AFM results show that the surface roughness of the thin film decreases with increasing annealing temperature, making the annealed film smoother as compared to the non-annealed sample. The efficiency of the ITO/PEDOT:PSS/PBTTT-C12:PC71BM/Al photovoltaic devices increases from 1.85 to 2.48% with an increment in the temperature ranging from 0 ℃ to 150 ℃
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Effect of metallic nanostructure's shape and size on the performance of organic solar cells: A simulation study / Rupak Wasman Qadir
No full textA systematic study on the absorption enhancement by embedding the periodic metallic nanostructures (NSs) inside the organic Copper Phthalocyanine (CuPc) thin films, is reported. The Surface Plasmon resonance (SPR) can be excited by adding metallic nanostructures and the light can be concentrated and folded into the CuPc layers. By utilizing the Finite Different Time Domain (FDTD), the role of the several different shapes of the metallic nanostructures has been studied. It has been found that the metallic NSs can result in a broadband optical absorption enhancement within the semiconductor thin film in organic solar cells. By increasing the optical path length, the probability of photon being absorbed within the thin film, is increased. The studies on the effects of the position, the dimension and spacing of the metallic particles in the organic thin film on the light absorption have also been performed. A significant enhancement in the absorption in the wavelength range of 350-550 nm has been observed. Furthermore, the investigation has been performed on the effect of the light source incident angle and polarization direction on the absorption in the organic thin films. The best incident angle is found at 75 degree. The role of the nanoparticles light scattering for enhanced light absorption in the organic solar cells, also has been investigated. It is found that the size and shape of nanoparticles give a significant effect on the light scattering and absorption spectra over the visible wavelength
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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