Accelerating semogenesis: an ecosocial approach to photography

2019 ◽  
pp. 147035721988776
Author(s):  
Christian Mosbæk Johannessen ◽  
Morten Boeriis

Michael Halliday and Christian Matthiessen’s term ‘semogenesis’ refers to how meaning potentials are created through processes on many co-occurring time frames, most prominently those referred to as ‘phylogenesis’, ‘ontogenesis’ and ‘logogenesis’. The concept was originally infused with linguistic concern in an attempt to link a Systemic Functional Linguistics (SFL) account of the lexico-grammatical and semantic strata with lived experience. In this article, the authors rethink the concept in order to (1) broaden its scope to the concerns of multimodal studies, and (2) accommodate how digital technology impacts on our communication practices. They do so by discussing semogenesis from a vantage point of ‘ecosocial semiotics’, a perspective that asks us to blend both sociological, technological, material and biological understandings of human activity. Taking digital photography as an example, the authors argue that digital media afford an acceleration of processes of multimodal semogenesis on all semogenetic time frames. Picking up the notion of ‘microgenesis’, a fourth, faster-than-logogenesis time frame that serves as a placeholder for any process enabling logogenesis, they suggest that this acceleration is driven by the global-scale introduction of digital technology. Through a discussion of select examples from the history of photography, specifically contrasting nascent photographic practice with contemporary photography, they propose that the development from camera to digital camera and the subsequent consolidation in recent decades of digital cameras into smartphones has had a profound impact, not only on practices of photography, but also on the processes of meaning making with photographic material.

Author(s):  
Narelle Lemon

Young people can take meaningful photographs and are thus capable users of handheld digital technology such as digital cameras. When their digital photographs are paired with their narratives (creating visual narratives) an intertexuality becomes evident whereby the child's voice is honored. By positioning children as capable photographers who generate images to share their lived experiences, this chapter describes a project (called Ways of Seeing) that was interested in how visual narratives could support participatory learning in an art gallery setting. Johnson, Adams & Witchey (2011) trends for 2011 – 2016 identify six emerging technology topics that resonate well with the projects aims and offer several concrete examples of how technology is used in museums and galleries. They believe that digital technology embedded with a contemporary context reflects the reality of education needs, learning and teaching. It is from this perspective that this chapter shares a project that builds on these notions and shares how a digital camera can be used in the gallery space with young people. A visual narrative of the method and a content analysis of the digital images generated by the young people is presented. This chapter demonstrates how it is possible to take digital technology such as digital cameras and embed them into gallery education programs with young people.


2021 ◽  
Vol 42 (s4) ◽  
pp. 59-78
Author(s):  
Helena Sandberg ◽  
Ulrika Sjöberg ◽  
Ebba Sundin

Abstract In this article, the Swedish findings from a European comparative study on 0–3-year-old children and their digital lives are presented and discussed in relation to domestication theory, including the concept of moral economy. More specifically, attention is paid to toddler's appropriation of digital technology and the parents’ moral struggles: the negotiations between the parents concerning the introduction of digital media practices in early childhood, the selection of content, and the monitoring of children. Parents of very young children have ambivalent feelings towards digital media technologies and struggle to make the right decision for their children. The study demonstrates that the domestication of digital technology in early childhood is far more multifaceted and troublesome for parents to handle than previous research has found.


2020 ◽  
Vol 41 (2) ◽  
pp. 61-67
Author(s):  
Marko Tončić ◽  
Petra Anić

Abstract. This study aims to examine the effect of affect on satisfaction, both at the between- and the within-person level for momentary assessments. Affect is regarded as an important source of information for life satisfaction judgments. This affective effect on satisfaction is well established at the dispositional level, while at the within-person level it is heavily under-researched. This is true especially for momentary assessments. In this experience sampling study both mood and satisfaction scales were administered five times a day for 7 days via hand-held devices ( N = 74 with 2,122 assessments). Several hierarchical linear models were fitted to the data. Even though the amount of between-person variance was relatively low, both positive and negative affect had substantial effects on momentary satisfaction on the between- and the within-person level as well. The within-person effects of affect on satisfaction appear to be more pronounced than the between-person ones. At the momentary level, the amount of between-person variance is lower than in studies with longer time-frames. The affect-related effects on satisfaction possibly have a curvilinear relationship with the time-frame used, increasing in intensity up to a point and then decreasing again. Such a relationship suggests that, at the momentary level, satisfaction might behave in a more stochastic manner, allowing for transient events/data which are not necessarily affect-related to affect it.


2012 ◽  
Vol 20 (2) ◽  
pp. 275-294 ◽  
Author(s):  
Stephen J. Cowley

To view language as a cultural tool challenges much of what claims to be linguistic science while opening up a new people-centred linguistics. On this view, how we speak, think and act depends on, not just brains (or minds), but also cultural traditions. Yet, Everett is conservative: like others trained in distributional analysis, he reifies ‘words’. Though rejecting inner languages and grammatical universals, he ascribes mental reality to a lexicon. Reliant as he is on transcriptions, he takes the cognitivist view that brains represent word-forms. By contrast, in radical embodied cognitive theory, bodily dynamics themselves act as cues to meaning. Linguistic exostructures resemble tools that constrain how people concert acting-perceiving bodies. The result is unending renewal of verbal structures: like artefacts and institutions, they function to sustain a species-specific cultural ecology. As Ross (2007) argues, ecological extensions make human cognition hypersocial. When we link verbal patterns with lived experience, we communicate and cognise by fitting action/perception to cultural practices that anchor human meaning making.


Entropy ◽  
2021 ◽  
Vol 23 (4) ◽  
pp. 484
Author(s):  
Claudiu Vințe ◽  
Marcel Ausloos ◽  
Titus Felix Furtună

Grasping the historical volatility of stock market indices and accurately estimating are two of the major focuses of those involved in the financial securities industry and derivative instruments pricing. This paper presents the results of employing the intrinsic entropy model as a substitute for estimating the volatility of stock market indices. Diverging from the widely used volatility models that take into account only the elements related to the traded prices, namely the open, high, low, and close prices of a trading day (OHLC), the intrinsic entropy model takes into account the traded volumes during the considered time frame as well. We adjust the intraday intrinsic entropy model that we introduced earlier for exchange-traded securities in order to connect daily OHLC prices with the ratio of the corresponding daily volume to the overall volume traded in the considered period. The intrinsic entropy model conceptualizes this ratio as entropic probability or market credence assigned to the corresponding price level. The intrinsic entropy is computed using historical daily data for traded market indices (S&P 500, Dow 30, NYSE Composite, NASDAQ Composite, Nikkei 225, and Hang Seng Index). We compare the results produced by the intrinsic entropy model with the volatility estimates obtained for the same data sets using widely employed industry volatility estimators. The intrinsic entropy model proves to consistently deliver reliable estimates for various time frames while showing peculiarly high values for the coefficient of variation, with the estimates falling in a significantly lower interval range compared with those provided by the other advanced volatility estimators.


Symmetry ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1218
Author(s):  
Aleksandr Kulchitskiy

The article proposes a solution to the problem of increasing the accuracy of determining the main shaping dimensions of axisymmetric parts through a control system that implements the optical method of spatial resolution. The influence of the projection error of a passive optical system for controlling the geometric parameters of bodies of revolution from the image of its sections, obtained by a digital camera with non-telecentric optics, on the measurement accuracy is shown. Analytical dependencies are derived that describe the features of the transmission of measuring information of a system with non-telecentric optics in order to estimate the projection error. On the basis of the obtained dependences, a method for compensating the projection error of the systems for controlling the geometry of the main shaping surfaces of bodies of revolution has been developed, which makes it possible to increase the accuracy of determining dimensions when using digital cameras with a resolution of 5 megapixels or more, equipped with short-focus lenses. The possibility of implementing the proposed technique is confirmed by the results of experimental studies.


2021 ◽  
pp. 1-5
Author(s):  
Sun Hyun Kim ◽  
Sang-Yeon Suh ◽  
Seok Joon Yoon ◽  
Jeanno Park ◽  
Yu Jung Kim ◽  
...  

Abstract Objective Several studies supported the usefulness of “the surprise question” in terms of 1-year mortality of patients. “The surprise question” requires a “Yes” or “No” answer to the question “Would I be surprised if this patient died in [specific time frame].” However, the 1-year time frame is often too long for advanced cancer patients seen by palliative care personnel. “The surprise question” with shorter time frames is needed for decision making. We examined the accuracy of “the surprise question” for 7-day, 21-day, and 42-day survival in hospitalized patients admitted to palliative care units (PCUs). Method This was a prospective multicenter cohort study of 130 adult patients with advanced cancer admitted to 7 hospital-based PCUs in South Korea. The accuracy of “the surprise question” was compared with that of the temporal question for clinician's prediction of survival. Results We analyzed 130 inpatients who died in PCUs during the study period. The median survival was 21.0 days. The sensitivity, specificity, and overall accuracy for the 7-day “the surprise question” were 46.7, 88.7, and 83.9%, respectively. The sensitivity, specificity, and overall accuracy for the 7-day temporal question were 6.7, 98.3, and 87.7%, respectively. The c-indices of the 7-day “the surprise question” and 7-day temporal question were 0.662 (95% CI: 0.539–0.785) and 0.521 (95% CI: 0.464–0.579), respectively. The c-indices of the 42-day “the surprise question” and 42-day temporal question were 0.554 (95% CI: 0.509–0.599) and 0.616 (95% CI: 0.569–0.663), respectively. Significance of results Surprisingly, “the surprise questions” and temporal questions had similar accuracies. The high specificities for the 7-day “the surprise question” and 7- and 21-day temporal question suggest they may be useful to rule in death if positive.


Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4084
Author(s):  
Xin-Yu Zhao ◽  
Li-Jing Li ◽  
Lei Cao ◽  
Ming-Jie Sun

Digital cameras obtain color information of the scene using a chromatic filter, usually a Bayer filter, overlaid on a pixelated detector. However, the periodic arrangement of both the filter array and the detector array introduces frequency aliasing in sampling and color misregistration during demosaicking process which causes degradation of image quality. Inspired by the biological structure of the avian retinas, we developed a chromatic LED array which has a geometric arrangement of multi-hyperuniformity, which exhibits an irregularity on small-length scales but a quasi-uniformity on large scales, to suppress frequency aliasing and color misregistration in full color image retrieval. Experiments were performed with a single-pixel imaging system using the multi-hyperuniform chromatic LED array to provide structured illumination, and 208 fps frame rate was achieved at 32 × 32 pixel resolution. By comparing the experimental results with the images captured with a conventional digital camera, it has been demonstrated that the proposed imaging system forms images with less chromatic moiré patterns and color misregistration artifacts. The concept proposed verified here could provide insights for the design and the manufacturing of future bionic imaging sensors.


2021 ◽  
Vol 2021 (29) ◽  
pp. 1-6
Author(s):  
Yuteng Zhu ◽  
Graham D. Finlayson

Previously improved color accuracy of a given digital camera was achieved by carefully designing the spectral transmittance of a color filter to be placed in front of the camera. Specifically, the filter is designed in a way that the spectral sensitivities of the camera after filtering are approximately linearly related to the color matching functions (or tristimulus values) of the human visual system. To avoid filters that absorbed too much light, the optimization could incorporate a minimum per wavelength transmittance constraint. In this paper, we change the optimization so that the overall filter transmittance is bounded, i.e. we solve for the filter that (for a uniform white light) transmits (say) 50% of the light. Experiments demonstrate that these filters continue to solve the color correction problem (they make cameras much more colorimetric). Significantly, the optimal filters by restraining the average transmittance can deliver a further 10% improvement in terms of color accuracy compared to the prior art of bounding the low transmittance.


Author(s):  
Michael D. Kutzer ◽  
Levi D. DeVries ◽  
Cooper D. Blas

Additive manufacturing (AM) technologies have become almost universal in concept development, prototyping, and education. Advances in materials and methods continue to extend this technology to small batch and complex part manufacturing for the public and private sectors. Despite the growing popularity of digital cameras in AM systems, use of image data for part monitoring is largely unexplored. This paper presents a new method for estimating the 3D internal structure of fused deposition modeling (FDM) processes using image data from a single digital camera. Relative transformations are established using motion capture, and the 3D model is created using knowledge of the deposition path coupled with assumptions about the deposition cross-section. Results show that part geometry can be estimated and visualized using the methods presented in this work.


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