1,721,029 research outputs found
sj-1-pdf-rmm-10.1177_26320843221085649 – Supplemental material for Considerations for choosing an imputation method for addressing sparse measurement issues dictated by the study design - An illustration from per-protocol analysis in pragmatic trials
No full textSupplementary material, sj-1-pdf-rmm-10.1177_26320843221085649 for Considerations for choosing an imputation method for addressing sparse measurement issues dictated by the study design - An illustration from per-protocol analysis in pragmatic trials by Mohammad Ehsanul Karim and Md Belal Hossain in Research Methods in Medicine & Health Sciences</p
Effect of shrimp chitosan coating on physico-chemical properties and shelf life extension of banana
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Bandstru cture observation of graphene nanoribb on and boron-nitride nanoribbon embedded graphene nanoribbon
Get PDFThis thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2016.Cataloged from PDF version of thesis report.Includes bibliographical references (page 76-77).Due to distinctive electronic properties and potential future application in tunable bandgap opening, Graphene Nanoribbon (GNR) has apprehended strong attention. Boron Nitride Nanoribbons (BNNR) exhibit analogous structure. Thus domains of Graphene embedded in Boron Nitride can be synthesized to open a bandgap exposing the semiconductor behavior of Graphene more precisely. A numeric investigation of the impact of GNR embedded in BNNR explains the bandgap tunability as well as transport property of Graphene. This unique versatility is likely to bring a radical change in electrical field not only by encouraging innovation but also by improving the mechanism of existing devices.Fatin Farhan HaqueRimi Reza DuitySyed Shamsia Tanzin AuthoiB. Electrical and Electronic Engineerin
Optimisation of photonic crystal weveguide based optical filter
Get PDFThis thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2013.Cataloged from PDF version of thesis report.Includes bibliographical references (page 53-55).Photonic integrated circuits (PIC) based on Photonic Crystals are becoming increasingly favoured in emerging signal processing and optical communication technologies. Photonic crystals (PhCs) are periodic dielectric micro/nano structures that inhibit propagation of electromagnetic wave of a certain range of frequencies, therefore introducing a frequency band gap, popularly known as photonic band gap. In this thesis, numerical simulation of a photonic crystal based optical filter or demultiplexer is carried out by the introduction of defect rods in a perfectly periodic photonic crystal, whose parameters are chosen using the band gap map. The dimensions of the defect rods are exclusively tailored for the wavelength to be extracted via that channel. Optimisation of the proposed design by changing the number of rods in the defects is also discussed based on the results of the calculations of the Finite Difference Time Domain (FDTD) method.Pratik Al IslamNameeza SultanSeefath NayeemB. Electrical and Electronic Engineerin
Mode interactions in photonic crystal nano-cavity arrays
Get PDFThis thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2014.Cataloged from PDF version of thesis report.Includes bibliographical references (page 44-45).Over the last few decades Photonic Crystals (PhCs) have enjoyed immense attention from
engineers, physicists and other interested parties due to its unique characteristics and its
promise to revolutionize optical communication technologies. PhCs are made of dielectric
materials periodic in one, two, or three dimensions and can exhibit photonic band gaps to
certain frequencies. Therefore, it can be used to trap or guide “light” of certain frequencies
within it. This thesis uses this very idea to construct a Photonic Crystal Slab (PCS) of finite
thickness using photonic band gap maps, where air holes are introduced to create the
periodicity. Cavity arrays are formed by manipulating the properties of certain air holes and
the interactions between the modes within the cavity are analyzed. Two types of cavities are
formed- one consisting of similar defects and one consisting of dissimilar defects. The
software used for this thesis is Rsoft CAD Suit and the simulation tools used are
BandSOLVE and FullWAVE.Efaz Karim,
Ehsanul Alam Sabbir,
Md. Raisul Islam ShantoB. Electrical and Electronic Engineerin
Humidity sensor using surface adsorbed channel modulated GrapheneNanoribbon : NEGF approach
No full textThis thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2014.Cataloged from PDF version of thesis report.Includes bibliographical references (page 49).Flexible, highly sensitive and low cost humidity sensors are highly enviable in future generation sensor technology. As a result of recent year’s research conducted concerning the applicability in gas and humidity sensors, graphene is reported to be an appropriate sensing material for this purpose. The inimitable structural, mechanical and electronic properties of graphene has attracted extensive attention of scientists, therefore the successful synthesis of novel two-dimensional (2D) graphene and the experimental observation of Dirac fermions in unpatterned graphene devices has been increasing rapidly. This thesis describes simulation based study of humidity sensing ability of patterned graphene adsorbing vapour (H2O) and investigate electronic and quantum transport properties of these system such as Device Density of States ( DDOS ), Electrostatic Effective Potential (EDP), Conductivity (G) and Current-Voltage (I-V) characteristics. Transport simulation is based on Non-equilibrium Green’s Function (NEGF) formalism. In our thesis, we have considered three cases such as semiconducting grapheme nanoribbon (N=10), metallic grapheme nanoribbon (N=11) and cascade hetero-graphene nanoribbon, where sensing medium is semiconducting GNR (N=10) and contact is metallic GNR (N=11) to realize the effect of H2O adsorption on it. We have calculated the highest number of H2O molecules that can be absorbed on corresponding to the area of GNR to get maximum current. Later on we propose a simple schematic model to characterize device performance which incorporates the effect of metal contact resistance with GNR.Shifur Rahman Shakil,
Fatema Tuz Zohra,
Parna Pramanik,
Raihanul Islam TusharB. Electrical and Electronic Engineerin
Variations on the Author
Get PDF“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
Get PDFWe 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
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