Categorically Provisional

PMLA ◽  
2020 ◽  
Vol 135 (1) ◽  
pp. 165-174
Author(s):  
Susan Brown
Keyword(s):  
Literary History ◽  
Ways Of Knowing ◽  
Gender Analysis ◽  
Quarter Century ◽  
Cambridge University ◽  
The Past ◽  
Computational Environment ◽  
The Difference ◽  
Semantic Markup ◽  
Better Than

Feminist Literary History Balances Commitment to a Different Future, One Better Than the Present with Respect to Gender, with an orientation toward the past, whose ways of knowing it seeks to supersede even as it engages with them. The revision of our cultural past through the lens of gender has, by drawing on past categorizations of authors as female, necessarily invoked problematic paradigms in the service of critique and epistemological change. The relation of the digital humanities (DH) to category work is similarly fraught. I offer here my take on the power and peril of classification based on category making in the pursuit of digital feminist literary history through the Orlando Project, an ongoing experiment in using semantic markup for online scholarship. Orlando is known for its online textbase, published with Cambridge University Press, but the team has produced a number of exploratory interfaces and translations of the material into other forms. Over the course of a quarter century of grappling with “the digital as difference” (Wernimont and Flanders 430) alongside other feminist projects, I have changed my understanding of classification as my collaborators and I have tried to represent the difference that gender analysis makes when undertaken in a computational environment. I here argue that category work, always vexed, always provisional, is crucial to realizing the potential of DH for representing, analyzing, and fostering difference.

scholarly journals Directionally dependent Lambertian-equivalent reflectivity (DLER) of the Earth's surface measured by the GOME-2 satellite instruments

2021 ◽  
Vol 14 (6) ◽  
pp. 4219-4238
Author(s):  
Lieuwe G. Tilstra ◽  
Olaf N. E. Tuinder ◽  
Ping Wang ◽  
Piet Stammes
Keyword(s):  
Near Infrared ◽  
Short Wave ◽  
Degree Polynomial ◽  
Surface Reflection ◽  
Global Database ◽  
The Past ◽  
Surface Reflectivity ◽  
The Difference ◽  
Better Than ◽  
Satellite Instruments

Abstract. In this paper we introduce the new concept of directionally dependent Lambertian-equivalent reflectivity (DLER) of the Earth's surface retrieved from satellite observations. This surface DLER describes Lambertian (isotropic) surface reflection which is extended with a dependence on the satellite viewing geometry. We apply this concept to data of the GOME-2 satellite instruments to create a global database of the reflectivity of the Earth's surface, providing surface DLER for 26 wavelength bands between 328 and 772 nm as a function of the satellite viewing angle via a second-degree polynomial parameterisation. The resolution of the database grid is 0.25∘ by 0.25∘, but the real, intrinsic spatial resolution varies over the grid from 1.0∘ by 1.0∘ to 0.5∘ by 0.5∘ down to 0.25∘ by 0.25∘ by applying dynamic gridding techniques. The database is based on more than 10 years (2007–2018) of GOME-2 data from the MetOp-A and MetOp-B satellites. The relation between DLER and bi-directional reflectance distribution function (BRDF) surface reflectance is studied using radiative transfer simulations. For the shorter wavelengths (λ<500 nm), there are significant differences between the two. For instance, at 463 nm the difference can go up to 6 % at 30∘ solar zenith angle. The study also shows that, although DLER and BRDF surface reflectances have different properties, they are comparable for the longer wavelengths (λ>500 nm). Based on this outcome, the GOME-2 surface DLER is compared with MODIS surface BRDF data from MODIS band 1 (centred around 645 nm) using both case studies and global comparisons. The conclusion of this validation is that the GOME-2 DLER compares well to MODIS BRDF data and that it does so much better than the non-directional LER database. The DLER approach for describing surface reflectivity is therefore an important improvement over the standard isotropic (non-directional) LER approaches used in the past. The GOME-2 surface DLER database can be used for the retrieval of atmospheric properties from GOME-2 and from previous satellite instruments like GOME and SCIAMACHY. It will also be used to support retrievals from the future Sentinel-5 UVNS (ultraviolet, visible, near-infrared, and short-wave infrared) satellite instrument.

A geophysical wire strainmeter

1976 ◽  
Vol 66 (6) ◽  
pp. 2039-2047
Author(s):  
Geoffrey King ◽  
Roger Bilham
Keyword(s):  
Absolute Calibration ◽  
Cambridge University ◽  
The Past ◽  
The Earth ◽  
Current Consumption ◽  
The Absolute ◽  
Better Than

abstract A self-zeroing geophysical strainmeter design is described which has been used extensively by Cambridge University in the past 4 years. The performance of the buried 10-m instrument is adequate to study geophysical signals in the Earth at periods from 1 sec to DC and with magnitudes from 10-10 to more than 10-5 strain. Low current consumption enables the instrument to operate remotely from batteries for up to 1 year. Better than 0.1 per cent linearity allows its use in the study of nonlinear geophysical signals, and relative calibration to 0.2 per cent allows clusters of instruments to be used in arrays. The absolute calibration of such an array is 2 per cent.

Removal of inelastically scattered electrons substantially increases phase contrast on frozen-hydrated molecules

1987 ◽  
Vol 45 ◽  
pp. 652-653
Author(s):  
John P. Langmore ◽  
Brian D. Athey
Keyword(s):  
Electron Diffraction ◽  
Phase Contrast ◽  
Low Dose ◽  
Dark Field ◽  
Biological Structure ◽  
Bright Field ◽  
Low Contrast ◽  
Negative Stain ◽  
The Difference ◽  
Better Than

Although electron diffraction indicates better than 0.3nm preservation of biological structure in vitreous ice, the imaging of molecules in ice is limited by low contrast. Thus, low-dose images of frozen-hydrated molecules have significantly more noise than images of air-dried or negatively-stained molecules. We have addressed the question of the origins of this loss of contrast. One unavoidable effect is the reduction in scattering contrast between a molecule and the background. In effect, the difference in scattering power between a molecule and its background is 2-5 times less in a layer of ice than in vacuum or negative stain. A second, previously unrecognized, effect is the large, incoherent background of inelastic scattering from the ice. This background reduces both scattering and phase contrast by an additional factor of about 3, as shown in this paper. We have used energy filtration on the Zeiss EM902 in order to eliminate this second effect, and also increase scattering contrast in bright-field and dark-field.

PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE STAD DENGAN PENDEKATAN RME UNTUK MENINGKATKAN HASIL BELAJAR MATEMATIKA SISWA KELAS IX SMP MUHAMMADIYAH PADANG LUAS KECAMATAN TAMBANG KABUPATEN KAMPAR

2018 ◽  
Vol 2 (5) ◽  
pp. 744
Author(s):  
Zainur Zainur
Keyword(s):  
Action Research ◽  
Cooperative Learning ◽  
Student Learning ◽  
Learning Outcomes ◽  
Mathematics Learning ◽  
Student Learning Outcomes ◽  
Learning Model ◽  
Research Instrument ◽  
The Difference ◽  
Better Than

This research was motivated by the low learning outcomes of grade IX SMP Muhammadiyah Padang LuasKecamatan Tambang Kabupaten Kampar. This study aims to improve learning outcomes in mathematicslearning through STAD type cooperative learning with the RME approach in class IX SMP MuhammadiyahPadang Luas Kecamatan Tambang Kabupaten Kampar. The subjects of this study were all classes IX in SMPMuhammadiyah Padang Luas Kecamatan Tambang Kabupaten Kampar totaling 26 people. The form ofresearch is classroom action research. This research instrument consists of performance instruments and datacollection instruments in the form of teacher activity observation sheets and activities. The results of the studystated that there were significant differences between students' mathematics learning outcomes before applyingthe STAD type cooperative learning model with the RME approach with after applying the STAD typecooperative learning model with the RME approach. The difference shows student learning outcomes after theaction is better than before the action with completeness reaching 80.77% or 21 completed. Based on the resultsof the study and discussion it can be concluded that the application of STAD type learning model with RealisticMathematic Education (RME) approach can improve the learning outcomes of grade IX students of SMPMuhammadiyah Padang Luas Kecamatan Tambang Kabupaten Kampar on statistical material.

Smart Estimation Ver-H.1.0

2018 ◽  
Author(s):  
Sigit Haryadi
Keyword(s):  
Sample Size ◽  
Confidence Level ◽  
Time Span ◽  
Regression Equation ◽  
Weight Factor ◽  
The Past ◽  
Level Of Confidence ◽  
The Future ◽  
Future Value ◽  
The Difference

We cannot be sure exactly what will happen, we can only estimate by using a particular method, where each method must have the formula to create a regression equation and a formula to calculate the confidence level of the estimated value. This paper conveys a method of estimating the future values, in which the formula for creating a regression equation is based on the assumption that the future value will depend on the difference of the past values divided by a weight factor which corresponding to the time span to the present, and the formula for calculating the level of confidence is to use "the Haryadi Index". The advantage of this method is to remain accurate regardless of the sample size and may ignore the past value that is considered irrelevant.

On the sources of cosmopolitanism as an idea: The Russian and the European views

2020 ◽  
pp. 44-69
Author(s):  
E. E. Dmitrieva
Keyword(s):  
Comparative Literature ◽  
Literary History ◽  
World Literature ◽  
Literary Work ◽  
General Term ◽  
Literary Process ◽  
The Difference ◽  
Literary Environment

The article is concerned with the difference in understanding of the term ‘cosmopolitan’ inRussiaandFrance. Often considered a predominantly negative phenomenon inRussia, cosmopolitanism fi st provoked a discussion at the time when the emphasis shifted from ideology to understanding of the historical-literary process. Since the late 18th c., the idea of the possible existence of a literary work within the global literary environment (the concept of world literature)   was adjusted by the ‘golden chain’ metaphor, which enabled implementation of the ‘universality’ concept as a unity principally separate from the French idée universelle. During this evolutionary period emerged a distinctive subject of literary history: fi st, ‘humanity’ as a general term (initially identifi    with universalism or cosmopolitanism), and then ‘a nation’. But it is the discovery of the national that the author believes is connected with particularism and provincialism,   the latter summoning the memory of the noble intention of universalism and cosmopolitanism. An interim summary of the process was produced by Joseph Texte, a professor of comparative literature inLyon, at the end of the 19th c.

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