| 1. |
- Alam, Anzar, et al.
(författare)
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Online surface roughness characterization of paper and paperboard using a line of light triangulation technique
- 2012
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Ingår i: Nordic Pulp & Paper Research Journal. - 0283-2631 .- 2000-0669. ; 27:3, s. 662-670
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Tidskriftsartikel (refereegranskat)abstract
- Within both the paper and paperboard industries, real time monitoring and measurement of surface roughness of a paper moving at high velocities is an important and challenging area of research. The uniform surface, for an entire production, can be effectively achieved by monitoring and controlling the paper surface roughness, in real time during the manufacturing steps. Presently the majority of paper industries rely on traditional laboratory profilometers. The obvious limitations of lab profilometers are that these are slow, do not measure the quality of entire reels but rather deal with only a few small pieces of samples taken from the end of the reels and it is difficult to make any possible correction in the productionlines without knowing the online roughness data. To eradicate the disadvantages associated with conventional measurements, an online prototype instrument has been developed that measures the surface roughness during the manufacturing steps, and is based on a line of lighttriangulation technique. The prototype technique will be of assistance in ensuring tight process control in order to maintain both a better and auniform quality throughout the entire production. It measures the whole reel, meter by meter, in traditional units of roughness and is also capable of characterizing the topography in a wide range of wavelength spectra. The article presents the online analyses results obtained from the developed prototype. The real time measurements, in a paperboard pilot mill, have successfully characterized and distinguished 16 different grades of newspaper and paperboard reels including reels which have the same family of quality grades and materials.
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| 2. |
- Alam, Mohammad Anzar, et al.
(författare)
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Limitation of a line-of-light online paper surface measurement system
- 2014
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Ingår i: IEEE Sensors Journal. - 1530-437X .- 1558-1748. ; 14:8, s. 2715-2724
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Tidskriftsartikel (refereegranskat)abstract
- A new prototype device has been developed based on a laser triangulation principle to measure online surface topography in the paper and paperboard industries. It characterizes the surface in a wide spatial scale of topography from 0.09-10 mm. The prototype's technique projects a narrow line-of-light perpendicularly onto the moving paper-Web surface and scattered reflected light is collected at a low angle, low specular, and reduced coherent length onto the CCD sensors synchronized with the laser sources. The scattering phenomenon determines surface deviations in the z-direction. The full-width, at half-maximum of a laser line in cross section is sensitive in computation of the surface topography. The signal processing aspect of the image processing, for example, threshold and filtering algorithms are also sensitive in estimating the accurate surface features. Moreover, improper light illumination, intensity, reflection, occlusion, surface motion, and noise in the imaging sensor, and so forth, all contribute to deteriorate the measurements. Optical techniques measure the surface indirectly and, in general, an evaluation of the performance and the limitations of the technique are both essential and challenging. The paper describes the accuracy, uncertainty, and limitations of the developed technique in the raw profiles and in terms of the rms roughness. The achieved image subpixel resolution is 0.01 times a pixel. Statistically estimated uncertainty (2σ) in the laboratory environment was found 0.05 μm for a smooth sample, which provides a 95% confidence level in the rms roughness results. The depth of field of the prototype is ~2.4 mm.
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| 3. |
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| 4. |
- Dagerman, Stig, 1923-, et al.
(författare)
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Our Need for Consolation is Insatiable
- 2013
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Ingår i: Little Star: a journal of poetry and prose. - New York. - 2158-5830. ; 5, s. 301-307
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- In 1951 Swedish writer Stig Dagerman wrote an autobiographical essay titled "Our Need for Consolation is Insatiable." It is a remarkable poetic meditation on the life-and-death stakes of the literary imagination from a writer who was likely suffering from an undiagnosed bipolar disorder, fighting for his life through one depressive episode after another. Written when his critical reputation and fame as Sweden’s greatest new literary phenom had been firmly established following a remarkable outpouring of critically acclaimed work in the late 1940s, the essay marked a point in time when the tides had turned for Dagerman, who now struggled with the opposite of this productive streak in the form of a debilitating bout of writer’s block that would eventually contribute to his suicide two years later. "Our Need for Consolation is Insatiable" lays bare the writer’s fragile psyche, not only his faltering ego but his selfless and far from sure-footed ambition to offer something of lasting beauty and meaning to a world indifferent to his very existence. While writing the essay, Dagerman managed to rise temporarily from the depths of his depression and identify the sources of his own consolation and hope in terms that have continued to resonate powerfully with many readers, and fellow writers, over the following 60 years. Originally published in 1952 in the improbable venue of Husmodern (a magazine dedicated to home economics for Swedish housewives, analogous to American magazines like Good Housekeeping or Better Homes and Gardens), the essay was a profound response to a trivial commission from the magazine’s editors, who asked Dagerman to send them “something on the art of living.” The soul- and psyche-searching tour de force that Dagerman composed was not likely what the editors had in mind, but to their credit—and also possibly owing to his celebrity—they published the essay as written. The essay has since been translated into 10 languages and published / reprinted a great many times. This is the first literary translation of the essay into English.
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| 5. |
- Dagerman, Stig, 1923-, et al.
(författare)
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Sleet: Selected Stories by Stig Dagerman : Translated from the Swedish by Steven Hartman, with a preface by Alice McDermott
- 2013. - 1st
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Bok (refereegranskat)abstract
- Stig Dagerman (1923–1954) was regarded as the most talented young writer of the Swedish post-war generation. By the 1940s, his fiction, plays, and journalism had catapulted him to the forefront of Swedish letters, with critics comparing him to William Faulkner, Franz Kafka, and Albert Camus. His suicide at the age of thirty-one was a national tragedy. This selection, containing a number of new translations of Dagerman's stories never before published in English, is unified by the theme of the death of innocence. Often narrated from a child's perspective, the stories give voice to childhood's tender state of receptiveness and joy tinged with longing and loneliness.
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| 6. |
- Dagerman, Stig, 1923-, et al.
(författare)
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"The Stockholm Car"
- 2013
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Ingår i: Agni Magazine. - Boston, Mass. USA : Boston University. - 0191-3352.
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- English translation of short story by Swedish author Stig Dagerman (1923-1954) about impoverished children in Depression-Era rural Sweden and the shame of being invisible.
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| 7. |
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| 8. |
- Harling, Janet, 1955-
(författare)
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Light on snow
- 2011
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Annan publikation (populärvet., debatt m.m.)
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