Demarcation Lines Research Articles

Культурно-исторические особенности языковой картины мира участников военных действий: прошлое и современные отечественные реалии

The article delves into the cultural and historical specifics shaping the linguistic worldview of participants in special military operations (SVOs), as reflected in the modern media field. The most popular slang words and expressions among military personnel are identified and analyzed. The primary reasons for the use of war-related imagery, stemming from the implementation of a special operation in Ukraine, are characterized. Unofficial designations for weapons and other objects, enemies and civilian populations, locations of combatants and lines of demarcation of forces, as well as words and expressions related with death in war, are highlighted. Particular attention is paid to the comparative analysis of the imagery of frontline life during the Great Patriotic War and SVOs. The method of selective analysis of posts is used as the main method of researching posts in the virtual Telegram environment. The practical significance of the conducted research lies in the fact that the linguistic space created by front-line soldiers aids in understanding their mental world and values, as well as in establishing an inseparable link between different eras.

The HOMO-LUMO Gap as Discriminator of Biotic from Abiotic Chemistries.

Low-molecular-mass organic chemicals are widely discussed as potential indicators of life in extraterrestrial habitats. However, demarcation lines between biotic chemicals and abiotic chemicals have been difficult to define. Here, we have analyzed the potential utility of the quantum chemical property, HOMO-LUMO gap (HLG), as a novel proxy variable of life, since a significant trend towards incrementally smaller HLGs has been described in the genetically encoded amino acids. The HLG is a zeroth-order predictor of chemical reactivity. Comparing a set of 134 abiotic organic molecules recovered from meteorites, with 570 microbial and plant secondary metabolites thought to be exclusively biotic, we found that the average HLG of biotic molecules was significantly narrower (-10.4 ± 0.9 eV versus -12.4 ± 1.6 eV), with an effect size of g = 1.87. Limitation to hydrophilic molecules (XlogP < 2) improved the separation of biotic from abiotic compounds (g = 2.52). The "hydrophilic reactivity" quadrant defined by |HLG| < 11.25 eV and XlogP < 2 was populated exclusively by 183 biotic compounds and 6 abiotic compounds, 5 of which were nucleobases. We conclude that hydrophilic molecules with small HLGs represent valuable indicators of biotic activity, and we discuss the evolutionary plausibility of this inference.

Rhegmatogenous Retinal Detachment: Progression and Characteristics of Postoperative Demarcation Lines.

To report the characteristics of retinal detachment demarcation lines on infrared (IR) imaging together with retinal detachment progression analysis. We performed a retrospective case series of 25 eyes of 24 patients who underwent macula off Rhegmatogenous retinal detachment (RRD) repair and demonstrated a postoperative demarcation line on in(IR) imaging. All patients had an OCT imaging at baseline capturing the extent of the RRD. Criteria for demarcation lines diagnosis on infrared imaging included a line parallel and with the same contour of the RRD edge. These lines were not observed on IR imaging prior to RRD repair surgery. Demarcation lines' hyperreflectivity was situated in the interdigitation-ellipsoid zone complex. These lines were more obvious on the early postoperative week but faded over time (average disappearance time 2.6 ± 2.9 months). The analysis of retinal detachment progression showed that superior RRDs progressed more than inferior RRDs (611µ Vs 122µ, P=0.02). Among 13 cases with a superior RRD, the temporal border progressed more than the nasal side (697µ Vs 426µ, P=0.01, figure 1). The use of intraoperative perfluorocarbon was associated with less RRD progression (p=0.01). The study concludes that demarcation lines are distinct findings on IR imaging, appearing early but diminishing relatively quickly following RRD repair. It also revealed the characteristics of RRDs progression specifically that inferior RRDs and perfluorocarbon use were associated with less retinal progression.

Type B pigmentary demarcation lines in pregnancy.

SynopsisType B pigmentary demarcation lines is a benign and self‐limiting condition that can appear during pregnancy. Prompt recognition prevents unnecessary tests and treatments.

Comparative Evaluation of Anterior Segment Optical Coherence Tomography Findings Following Accelerated Corneal Crosslinking Protocols Using Different Riboflavin Formulations and Soaking Durations

Purpose To comparatively evaluate the influence of different riboflavin formulations and soaking durations on the anterior segment optical coherence tomography (AS-OCT) findings following accelerated corneal crosslinking (ACXL) at 9 mW/cm2 for in progressive keratoconus. Methods In this prospective study, consecutive patients with progressive keratoconus were randomized into 4 groups. Group 1: hydroxypropyl methylcellulose (HPMC)-based riboflavin for 10 min; Group 2: HPMC-based riboflavin for 20 min; Group 3: dextran-based riboflavin (0.1%) for 30 min. Riboflavin soaking was followed by ultraviolet-A irradiation at 9 mW/cm2 for 10 min in all three groups. Group 4 underwent conventional CXL (CCXL) using Dresden protocol. The AS-OCT features of the crosslinked cornea were evaluated at postoperative month 1 and correlated to the clinical outcomes at postoperative month 12. Results The study enrolled 26 eyes of 26 patients in each group. In groups 1 and 2, the AS-OCT findings were similar (p > .05) and the demarcation lines depth (DLD) were deep as obtained following CCXL. The DLD was significantly shallower in group 3 compared to the other groups (p < .01). There were no between-group differences in regards to the visual, refractive, keratometric, and tomographic outcomes at postoperative month 12. No significant endothelial cell loss or any other clinically significant adverse event was encountered in any patient’s eye at 12 months follow-up. Conclusion Although structural variations were noted in the crosslinked cornea, DLDs observed following ACXL (9 mW/cm2) using HPMC-based solution for 10 or 20 min were similar to those observed following CCXL. Whereas, ACXL (9 mW/cm2) using dextran-based solution for 30 min resulted in the shallowest DLD. Despite these remodeling differences, the visual, refractive and tomographic outcomes of all groups were comparable at postoperative 1-year follow-up. Studies with a greater number of patients and longer follow-ups are required to establish any relation between AS-OCT characteristics of crosslinked cornea and ACXL efficacy.

Demarcating rights in divided social worlds

Abstract This article outlines a framework for studying practices of boundary-making as pivotal to the various ways in which “rights” become objects of contention and sources of narrativization in contemporary constitutional democracies. Firstly, we reconsider the dynamics of boundary-making that underline polarization by drawing on the notion of “moral economy”. This concept is well-suited for making sense of how social groups draw lines of demarcation through the appropriation, circulation, and confrontation of values and emotions. However, we argue that the concept must be enriched by acknowledging the generative role of narratives. Hence, we introduce the notion of “narrative boundaries” for comprehending how moral economies are produced by storytelling practices. Based on this, we explore the paradoxical moral economy of constitutional struggles. While the discourse of rights pursues modes of inclusion, the struggles over their demarcation often result in narratives that build fences that reinforce the division between almost irreconcilable normative worlds.

Subclavian arterial rupture due to blunt trauma injury: A case report.

Subclavian arterial injury due to blunt trauma is rare but can have devastating outcomes. Massive hemorrhage or limb ischemia might develop depending on the extent of damage, and open repair might be necessary to salvage the limb. However, life-saving treatments should be prioritized in critically unstable patients. A 21-year-old male patient who was transferred to our trauma center following a motorcycle accident. Abdominal and chest computed tomography (CT) revealed right renal injury and massive hemothorax with several rib fractures in the right chest. Right renal injury with multiple extravasations and right 8th intercostal arterial injury were detected during angiography. Emergent exploration with lateral thoracotomy was performed to manage right hemothorax. Pulsating bleeding from the thoracic roof observed in the operative field suggested a subclavian arterial injury. The unstable vital signs did not recover despite massive transfusion, and his right arm had already stiffened. Therefore, endovascular approach was adopted and the second portion of the right subclavian artery was embolized using microcoils and thrombin. Postoperative intensive care unit management performed to resuscitate patient from multiorgan failure included continuous renal replacement therapy (CRRT). After confirming the demarcation lines, transhumeral amputation of the right arm was performed on admission day 12. The patient recovered from multiorgan failure for more than 3 weeks after the accident; however, the patient survived. Limb salvage, albeit critical for quality of life, is not possible in some cases where life-saving measures require its sacrifice. In these cases, quick decision-making by the surgeon is paramount for patient survival. As illustrated in this case, endovascular approaches should be considered less invasive measures to save the patient's life.

Organizational and managerial context of project-based learning development in higher school

The article is devoted to the study of the organizational and managerial context of the development of project-based learning in Russian universities. The sample of the study is represented by twelve universities of different types (federal, research, reference) Volga, Ural, Siberian and Southern Federal districts. Based on the traditional analysis of official documents posted on the official websites of universities, an assessment of key aspects of university policies in the implementation of project-based student education was carried out, reflecting the development of the organizational infrastructure of the analyzed practice and forming an environment of social interaction between students, teachers, curators, employers and representatives of educational management. The development of assessment tools was based on the methodology of systemic, organizational and managerial, process, situational and temporal approaches. The purpose of the study is to analyze the organizational and managerial context of project–based education in Russian universities. It is established that the institutional practices of implementing project-based learning in the universities under study have different resource capabilities and are implemented along different trajectories that have their own logic. The study recorded that in the information space, and accordingly in the organizational and managerial environment, diversity is represented in determining the goals and effectiveness of project training. The demarcation lines in the existing organizational and managerial models are strategic forks that ensure: the mass or selectivity of project-based education in universities; orientation towards educational and/or product results; integration of project-based learning into the educational process or the implementation of students' project activities beyond their educational activities. The dependence between the organizational design of project training and its resource provision – regulatory, personnel, and information support is revealed. The scale and intensity of managerial innovations associated with the transition of the educational process to project-based learning formats are more typical for universities included in the “Priority-2030” university development program. They determine not only serious institutional and organizational changes, but also the transformation of social interaction practices in higher education.

Education amid the deluge of enhancement discourses

This article delves into the examination of the similarities and disparities between education and enhancement, with a particular focus on enhancement within the realm of NBIC (Nano-Bio-Information Technology, Cognitive Science). After scrutinizing how proponents of enhancement have delineated the concept of education, our investigation unfolds along two primary dimensions: the anthropological underpinnings of education and enhancement discourse and their respective objectives. Through this analysis, we assert that education and enhancement exhibit distinct characteristics and objectives, defying easy comparison for determining which approach is more conducive to human improvement, notwithstanding their superficially analogous theoretical frameworks and objectives. Furthermore, we aim to highlight the perceptual illusions that blur the demarcation lines between education and enhancement, in order to establish a clear and distinctive role for education amid the plethora of enhancement discourses.

Lane formation in an active particle model with chirality for pedestrian traffic

We analyze the pattern formation in systems of active particles with chiral forces in the context of pedestrian dynamics. To describe the interparticle interactions, we use the standard social force model and supplement it with a new type of force that reflects chirality. We perform numerical simulations of two pedestrian flows moving in opposite directions along a corridor. We observe two dynamic phase transitions that occur for varying number densities of particles and strengths of the chirality force: one from disordered motion to multi-lane motion and another from multi-lane to two-lane motion. We develop a qualitative theory that describes the demarcation lines for these phase transitions in the phase diagram chirality-density. The results of our analysis agree fairly well with the simulation data. A comparison with previously reported experimental data has been provided. Our findings may find applications in urban and transportation-planning problems.

Characteristics of early gastric tumors with different differentiation and predictors of long-term outcomes after endoscopic submucosal dissection

BACKGROUND Gastric cancer is a common malignant tumor of the digestive tract, and endoscopic submucosal dissection (ESD) is the preferred treatment for early-stage gastric cancer. The analysis of the epidemiological characteristics of gastric mucosal tumors with different differentiation degrees and the influencing factors of long-term ESD efficacy may have certain significance for revealing the development of gastric cancer and ESD. AIM To analyze the features of gastric mucosal tumors at different differentiation levels, and to explore the prognostic factors of ESD. METHODS We retrospectively studied 301 lesions in 285 patients at The Second Affiliated Hospital of Xi'an Jiaotong University from 2014 to 2021, according to the latest Japanese guidelines (sixth edition), and divided them into low-grade intraepithelial neoplasia (LGIN), high-grade intraepithelial neoplasia (HGIN), and differentiated and undifferentiated early carcinoma. They are followed up by endoscopy, chest and abdominal computed tomography at 3, 6 and 12 months after ESD. We compared clinicopathologic characteristics, ESD efficacy, and complications with different degrees of differentiation, and analyzed the related factors associated with ESD. RESULTS HGIN and differentiated carcinoma patients were significantly older compared with LGIN patients (P &lt; 0.001) and accounted for more 0-IIc (P &lt; 0.001), atrophic gastritis was common (P &lt; 0.001), and irregular microvascular patterns (IMVPs) and demarcation lines (DLs) were more obvious (P &lt; 0.001). There was more infiltration in the undifferentiated carcinoma tissue (P &lt; 0.001), more abnormal folds and poorer mucosal peristalsis (P &lt; 0.001), and more obvious IMVPs, irregular microsurface patterns and DLs (P &lt; 0.05) than in the LGIN and HGIN tissues. The disease-free survival rates at 2, 5, and 8 years after ESD were 95.0%, 90.1%, and 86.9%, respectively. Undifferentiated lesions (HR 5.066), white moss (HR 7.187), incomplete resection (HR 3.658), and multiple primary cancers (HR 2.462) were significantly associated with poor prognosis. CONCLUSION Differentiations of gastric mucosal tumors have different epidemiological and endoscopic characteristics, which are closely related to the safety and efficacy of ESD.

Efficacy of Magnifying Endoscopy with Narrow-Band Imaging in the Diagnosis of Early Gastric Cancer and Gastric Intraepithelial Neoplasia.

Early diagnosis of gastric cancer can improve the prognosis of patients, especially for those with early gastric cancer (EGC), but only 15% of patients, or less, are diagnosed with EGC and precancerous lesions. Magnifying endoscopy with narrow-band imaging (ME-NBI) can improve diagnostic accuracy. We assess the efficacy of ME-NBI in diagnosing ECG and precancerous lesions, especially some characteristics under NBI+ME. This was a retrospective analysis of 131 patients with EGC or gastric intraepithelial neoplasia (IN) who had undergone endoscopic submucosal dissection and were pathologically diagnosed with EGC or IN according to 2019 WHO criteria for gastrointestinal tract tumors. We studied the characteristics of lesions under ME-NBI ,compared the diagnostic efficacy of ME-NBI and white light endoscopy (WLI) plus biopsy, and investigated the effect of Helicobacter pylori infection on microvascular and microsurface pattern. The diagnostic accuracy of ME-NBI for EGC, high-grade IN (HGIN), and low-grade IN (LGIN) was 76.06%, 77.96%, and 77.06%, respectively. The accuracy of WLI plus biopsy in diagnosing the above lesions was 69.7%, 57.5%, and 60.53%, respectively. The rate of gyrus-like tubular pattern was highest in LGIN (60.46%), whereas the highest rate of papillary pattern was 57.14% in HGIN and villous tubular pattern was 52% in EGC. Demarcation lines have better sensitivity for differentiating EGC from IN (92.06%). The ME-NBI has higher diagnostic accuracy for EGC than WLI plus biopsy. Demarcation lines and villous and papillary-like microsurface patterns are more specific as EGC and HGIN characteristics. The cerebral gyrus-like microsurface pattern is more specific for LGIN.

Advanced Diagnostic and Therapeutic Endoscopy for Early Gastric Cancer.

Endoscopy is mandatory to detect early gastric cancer (EGC). When considering the cost-effectiveness of the endoscopic screening of EGC, risk stratification by combining serum pepsinogen values and anti-H. pylori IgG antibody values is very promising. After the detection of suspicious lesions of EGC, a detailed observation using magnifying endoscopy with band-limited light is necessary, which reveals an irregular microsurface and/or an irregular microvascular pattern with demarcation lines in the case of cancerous lesions. Endocytoscopy enables us to make an in vivo histological diagnosis. In terms of the indications for endoscopic resection, the likelihood of lymph node metastasis and technical difficulties in en bloc resection is considered, and they are divided into absolute, expanded, and relative indications. Endoscopic mucosal resection and endoscopic submucosal dissection are the main treatment modalities nowadays. After endoscopic resection, curability is evaluated histologically as endoscopic curability (eCura) A, B, and C (C-1 and C-2). Recent evidence suggests that the outcomes of endoscopic resection for many EGCs are comparable to those of gastrectomy and that endoscopic resection is the gold standard for node-negative early gastric cancers. Personalized medicine is also being developed to overcome the unmet needs in treatments of EGC, for example the further expansion of indications and newer resection techniques, such as full-thickness resection.

Safety and efficacy of indocyanine green fluorescence imaging for real-time guidance of laparoscopic thermal ablation in patients with liver cancer

Purpose To evaluate the safety and efficacy of indocyanine green fluorescence imaging for real-time guidance of laparoscopic thermal ablation in patients with liver cancer. Materials and methods A total of 27 patients with 40 liver lesions underwent fluorescence-assisted laparoscopic ablation between January 2020 to March 2023. The sensitivity of indocyanine green (ICG)-fluorescence imaging, technique effectiveness rate and complications of fluorescence-assisted laparoscopic thermal ablation were evaluated. Results In total, 33 out of the 40 lesions were identified by ICG-fluorescence imaging technique, with the sensitivity of 82.5%. The sensitivity of ICG-fluorescence imaging of tumor detection in liver surface of parenchyma was significantly higher than that in the deeply located hepatic parenchyma (96.8% vs 33.3%, p = 0.002). ICG-fluorescence imaging procedures detected 4 lesions that cannot be seen on intraoperative ultrasound. It provides clear demarcation lines on the hepatic surface. Technical success is achieved if the necrotic zone had at least a 5 mm ablative margin around the outer edge of the ICG-fluorescence image. Technical success of fluorescence laparoscopic radiofrequency ablation (FLRFA) and fluorescence laparoscopic microwave ablation (FLMWA) was 100% (27/27). Technical effectiveness is defined by the complete necrotic lesions of the local tumor tissue during follow-up. According to the CT/MRI one month after FLRFA or FLMWA, the technical efficacy rate was 92.5% (37/40) and local tumor progression occurred in 7.5% (3/40) of the enrolled lesions. During the follow-up period, no major complications were observed. Conclusion ICG-fluorescence imaging guided laparoscopic thermal ablation was feasible, safe and effective.

A208 ENDOSCOPIC SUBMUCOSAL DISSECTION (ESD) FOR BARRETT’S NEOPLASIA: CLINICAL OUTCOMES AND MID-TERM FOLLOW-UP AT A CANADIAN TERTIARY REFERRAL CENTER

Abstract Background Endoscopic submucosal dissection (ESD) is an established technique for resecting early gastrointestinal neoplastic lesions. However, for Barrett’s neoplasia treatment, piecemeal EMR has been the standard approach, leaving the efficacy of ESD for Barrett’s neoplasia unclear. Aims To assess the outcomes of Barrett’s neoplasia treated with ESD at a tertiary center in Canada. Methods This is a single center, retrospective study. All patients aged over 18 who underwent ESD for Barrett’s neoplasia at St. Michael’s Hospital between December 2017 and August 2023 were included. Primary outcomes were En-bloc, R0, curative resection, and recurrence rates, while secondary outcomes focused on the adverse event rate. Results Of the 72 patients studied (mean age 67.7 years; 90% male), 31.9% (23/72) were SSBE and 68.1% (49/72) were LSBE. The mean±SD lesion size was 4.5±3.4 cm, with circumferential occupancy at 53.4±23.9 %. Paris classifications were as follows: 0-Is: 8 (11.1%), 0-IIa: 26 (36.1%), 0-IIb: 9 (12.5%), 0-IIc: 6 (8.3%), 0-IIa+IIc: 13 (18.6%), 0-IIa+Is: 10 (13.9%). The mean operation time stood at 144.4 (75.3) minutes. Adverse events comprised deep mural injury (4.1%) and delayed bleeding (2.8%). Pathology findings showed high-grade dysplasia in 6.9% and adenocarcinoma in 93.1%, further differentiated as: well-differentiated (55%), moderately differentiated (33%), and poorly differentiated (12%). The invasion depth was intramucosal in 76%, SM1 in 6%, and SM2-SM3 in 18%. Lympho-vascular invasion was present in 22%. En-bloc, R0, and curative resection rates were 96% (69/72), 82% (59/72), and 64% (46/72), respectively. Of the curative resection patients, 42 have completed follow-up EGD, with 11.9% (5/42) showing persistent dysplasia at first follow-up. These were treated by either EMR (4 cases) or ESD (1 case), leading to a 100% (42/42) complete remission of dysplasia (CRD) rate with median follow-up time of 127 (68-190) days. After achieving CRD, local recurrence was found in 2.4% (1/42) with a median follow-up time of 289 (136-524) days. This recurrence post-CRD was successfully treated with EMR, regaining CRD. Conclusions Our study showcases the Canadian experience of using ESD for Barrett’s neoplasia at a large single tertiary referral center. Given the challenging demarcation lines in Barrett’s neoplasia and the frequent presence of metachronous lesions, even with curative resection, 11.9% showed persistent lesions during the first follow-up. However, these lesions were treatable endoscopically, with 100% eventually achieving CRD. Although there was a 2.4% recurrence rate post-CRD, this too could be managed endoscopically. Overall, the mid-term outcomes of treating Barrett’s neoplasia with ESD are promising. Funding Agencies None

Comparative analysis of gendered frames in far-right rhetoric in the West

ABSTRACT This research delves into the examination of gender frames within a number of far-right platforms, such as American Renaissance, Heritage and Destiny, Britain First, Daily Stormer, and Front Page Magazine. Our primary objective is to dissect the construction of gendered frames and their consequential roles within the broader far-right political and ideological landscapes in the West. Employing a mixed-method approach, we scrutinize English language material from the aforementioned online platforms. This study argues that despite differences among these platforms, the representations of women’s roles and identities are consistently shaped and moulded in alignment with overarching political and ideological perspectives such as racism, Islamophobia, antisemitism, anti-immigration, anti-feminism, anti-left, and anti-media. These perspectives serve as amplifiers, further contributing gendered frames. Ultimately, this dynamic process of constructing gendered frames contributes to the development of far-right identities, drawing distinct demarcation lines between ‘us’ and ‘them’.

Guest Editors' Introduction: What is Psychoanalysis Today? A Critique of Psychoanalytic Theory and Clinic from the Philosophical Point of View

In this paper, we seek to draw new lines of demarcation in relation to the debates concerning both Philosophy and Psychoanalysis. Through the historical trajectory of the psychoanalytic movement, the reader is shown the importance of disciplinary mixtures. Namely, interdisciplinary dialogues that psychoanalysis in its theory and practice maintained since early times. It is proposed to think Psychoanalysis and Philosophy as a knot that finds its usefulness and responsibility in the social and political field. That is to say, the mixture and the collision between the conceptual machineries of both fields of knowledge contribute to think and analyze the situation of our century.

A multi-dimensional study of organisational boundaries and silos in the healthcare sector.

Purpose: The aim of this study is to understand how healthcare practitioners experience organisational boundaries and silos in day-to-day operations. Based on a multi-dimensional scale of organisational boundaries, the study examines how organisational demarcation lines enable and constrain daily work tasks in the healthcare sector.Research design: The study is based on a quantitative and qualitative analysis of survey responses from 895 healthcare practitioners in Denmark.Results: The results indicate that tendencies toward organisational silos relate to systems and hierarchies (management-staff) rather than professions and departments. Moreover, the study identifies resource scarcity as an important undercurrent in the understanding of the respondents' perceptions of boundaries and silos.Conclusion: The study contributes to existing research by documenting the coordination and collaboration challenges linked to the multitude of demarcation lines in complex health organisations.

Основные научные трактовки новых маркеров политической идентификации молодежи в современной России

The article examines the main trends in understanding political identification of the main groups of Russian youth in the last year and a half. Based on the analysis of the latest scholarly literature on this issue, it has been revealed that the attention of researchers continues to be attracted by the development of a methodology for analyzing various structures of youth identity, the justification of new types of their typology, the possibilities of combining various identification matrices for a more accurate correlation of the ideological, worldview and activity positioning of representatives of the younger generation. In scientific discourse, the position of supporters of a liberal interpretation of civic identity based on the justification of the priority of civil rights and individual freedoms has significantly weakened. The position whose supporters actually equate civic identity and national identity acquires dominant significance. This is due, first of all, to the official goal of introducing into the mass consciousness of young people an understanding of the social significance of the state and its functionality and the need to stimulate the corresponding active civic position of each individual in protecting the interests of the state and society as a whole. It is concluded that most researchers do not touch upon the specifics of identifying various groups of Russian youth in relation to the special military operation in Ukraine. On the one hand, this is understandable, given the complexity of the situation and the ambiguous possible consequences regarding any critical assessments on the part of researchers. On the other hand, there is a need for an objective understanding of new lines of demarcation, which, in terms of their motivational significance, are often ranked at a higher level than the traditional party-ideological and worldview preferences of Russian youth. Understanding these identification markers is the most important scientific task in theoretical and practical senses.

Claiming Universal Epistemic Authority – Relational Boundary Work and the Academic Institutionalization of Data Science

Abstract This article studies the rise of academic data science in Germany, Austria and Switzerland. By focusing on the boundary work that accompanies this development, we try to understand current transformations in knowledge production within digital academia and beyond. Drawing on qualitative interviews with data science scholars, we identify five lines of demarcation in claiming universal epistemic authority. This boundary work is characterized by multiple tensions and varies depending upon context and counterpart, making it inherently relational.