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See detailTwo Limitations in Legal Knowledge Base Constructing and Formalizing Law
Markovich, Réka UL

in IfCoLog Journal of Logics and Their Applications (2019)

Detailed reference viewed: 64 (5 UL)
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See detailTwo models of critique of metaphysics: Kant and Hegel
Heidemann, Dietmar UL

in Metaphysics as a Science in Classical German Philosophy (2022)

Detailed reference viewed: 48 (0 UL)
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See detailTwo More Efficient Variants of the J-PAKE Protocol
Skrobot, Marjan UL; Lancrenon, Jean UL; Tang, Qiang UL

in ACNS 2016 (2016, June)

Recently, the password-authenticated key exchange protocol J-PAKE of Hao and Ryan (Workshop on Security Protocols 2008) was formally proven secure in the algebraic adversary model by Abdalla et al. (IEEE ... [more ▼]

Recently, the password-authenticated key exchange protocol J-PAKE of Hao and Ryan (Workshop on Security Protocols 2008) was formally proven secure in the algebraic adversary model by Abdalla et al. (IEEE S&P 2015). In this paper, we propose and examine two variants of J-PAKE - which we call RO-J-PAKE and CRS-J-PAKE - that each makes the use of two less zero-knowledge proofs than the original protocol. We show that they are provably secure following a similar strategy to that of Abdalla et al. We also study their efficiency as compared to J-PAKE's, also taking into account how the groups are chosen. Namely, we treat the cases of subgroups of finite fields and elliptic curves. Our work reveals that, for subgroups of finite fields, CRS-J-PAKE is indeed more efficient than J-PAKE, while RO-J-PAKE is much less efficient. On the other hand, when instantiated with elliptic curves, both RO-J-PAKE and CRS-J-PAKE are more efficient than J-PAKE, with CRS-J-PAKE being the best of the three. We illustrate this experimentally, making use of recent research by Brier et al. (CRYPTO 2010). Regardless of implementation, we note that RO-J-PAKE enjoys a looser security reduction than both J-PAKE and CRS-J-PAKE. CRS-J-PAKE has the tightest security proof, but relies on an additional trust assumption at setup time. We believe our results can be useful to anyone interested in implementing J-PAKE, as perhaps either of these two new protocols may also be options, depending on the deployment context. [less ▲]

Detailed reference viewed: 347 (48 UL)
See detailTwo Neighbors, One Vision? The Impact of the European Union's Accession on the Development of Sociology in the Common Border Region Slovenia and Southern Austria. PhD thesis, University of Graz.
Hoenig, Barbara UL

Doctoral thesis (2009)

This dissertation thesis in the sociology of knowledge investigates the impact of European Union's research policies on the formation of sociology as a scientific discipline. From a comparative ... [more ▼]

This dissertation thesis in the sociology of knowledge investigates the impact of European Union's research policies on the formation of sociology as a scientific discipline. From a comparative perspective, Slovenia and Austria as two small Central European neighbour states and their common border region are taken as a case study, applying a mixed methods design. Based on extensive empirical data analyses with a strong focus on scientific institutions, findings show enabling and constraining effects of opportunity structures given by Europeanization of research policies. Transnational cooperation of scholars contributes to a stock of knowledge more and more known as European sociology. [less ▲]

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See detailTwo new projects on the Early Cold War period of European Integration
Paravantis, Spero UL

Report (2016)

Core Junior Web Page Announcement

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See detailTwo New Techniques of Side-Channel Cryptanalysis
Biryukov, Alex UL; Khovratovich, Dmitry UL

in Cryptographic Hardware and Embedded Systems - CHES 2007 (2007)

We describe two new techniques of side-channel cryptanalysis which we call the impossible collision attack and the multiset collision attack. These are inspired by the state-of-the-art cryptanalytic ... [more ▼]

We describe two new techniques of side-channel cryptanalysis which we call the impossible collision attack and the multiset collision attack. These are inspired by the state-of-the-art cryptanalytic techniques of impossible differential attacks [BihamBS99] and partial-function collision attacks [GilbertM00] respectively. Using these techniques on an example of the AES we show that one has to mask all the rounds of a 128-bit key AES in order to prevent such attacks. For example these attacks can be used to break a recent proposal by Schramm et al. [SchrammP06] of high order masking for the AES, since it protects only 3 external rounds. [less ▲]

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See detailTwo novel regulators of N-acetyl-galactosamine utilization pathway and distinct roles in bacterial infections
Zhang, Huimin; Ravcheev, Dmitry UL; Hu, Dan et al

in MicrobiologyOpen (2015), 4(6), 983-1000

Bacterial pathogens can exploit metabolic pathways to facilitate their successful infection cycles, but little is known about roles of d-galactosamine (GalN)/ N-acetyl-d- galactosamine (GalNAc) catabolism ... [more ▼]

Bacterial pathogens can exploit metabolic pathways to facilitate their successful infection cycles, but little is known about roles of d-galactosamine (GalN)/ N-acetyl-d- galactosamine (GalNAc) catabolism pathway in bacterial pathogenesis. Here, we report the genomic reconstruction of GalN/GalNAc utilization pathway in Streptococci and the diversified aga regulons. We delineated two new paralogous AgaR regulators for the GalN/GalNAc catabolism pathway. The electrophoretic mobility shift assays experiment demonstrated that AgaR2 (AgaR1) binds the predicted palindromes, and the combined in vivo data from reverse transcription quantitative polymerase chain reaction and RNA-seq suggested that AgaR2 (not AgaR1) can effectively repress the transcription of the target genes. Removal of agaR2 (not agaR1) from Streptococcus suis 05ZYH33 augments significantly the abilities of both adherence to Hep-2 cells and anti-phagocytosis against RAW264.7 macrophage. As anticipated, the dysfunction in AgaR2-mediated regulation of S. suis impairs its pathogenicity in experimental models of both mice and piglets. Our finding discovered two novel regulators specific for GalN/GalNAc catabolism and assigned them distinct roles into bacterial infections. To the best of our knowledge, it might represent a first paradigm that links the GalN/GalNAc catabolism pathway to bacterial pathogenesis. [less ▲]

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See detailTwo professional attitudes measurement scales evaluated by patients for general practitioners and dispensing chemists
Baumann, Michèle UL; Le Bihan, Etienne UL

in Society for Health and Medical Sociology (2006)

To construct and validate a scale of Professional Attitudes for both General Practitioners (in french, Attitudes Professionnelles des Médecins Generalistes) and dispensing chemists (Attitudes ... [more ▼]

To construct and validate a scale of Professional Attitudes for both General Practitioners (in french, Attitudes Professionnelles des Médecins Generalistes) and dispensing chemists (Attitudes Professionnelles des Pharmaciens d’Officine). Methods: Stage 1. The construction and qualitative validation of a scale. By interviewing 40 patients in a preventive-care center in east of France in addition to 21 general practitioners and 22 dispensing chemists, we targeted items which could possibly help us formalize a theoretical construction of professional attitudes which intervened in the instauration and follow-up of patient treatments. Then, with the help of a group of experts, we determined which generic items in the questionnaire could be validated and, finally, identified the functions which fulfilled these attitudes. Stage 2. We statistically validated the APMG and APPO scales and then studied the classic metric characteristics of the scales by using a questionnaire which was auto-administered to 393 patients from East of France. We have completed this validation with a differential item functioning analysis to determine if the questions have similar properties among men and women. Results: 15 relational items in general practitioners and 9 in dispensing chemists were identified. They are associated with information, communication and education. Each scale is one-dimensional. Analysis showed high internal coherence (Cronbach’s alpha coefficient was 0.91 and 0.87 respectively) and acceptable reproducibility (intra-class correlation coefficients were respectively 0.74 and 0.72). Differential item functioning analysis for gender is in progress. Conclusion: The professional attitudes, we isolated represent important criteria in the quality of interpersonal doctor-patient and chemist-patient relationships. The metric characteristics of the two scales were deemed satisfactory. This suggests that they can be used as an aid in training in the healthcare professional-patient relationship, in decision-making and in assessing relational competencies. [less ▲]

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See detailTwo properties of vectors of quadratic forms in Gaussian random variables
Poly, Guillaume; Nourdin, Ivan UL; Bogachev, Vladimir et al

in Teoriya Veroyatnostei i ee Primeneniya (2014), 59(2), 214-232

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See detailTwo Ray or not Two Ray this is the price to pay
Giordano, Eugenio; Frank, Raphaël UL; Ghosh, Abhishek et al

in Proceedings of the IEEE 6th International Conference on Mobile Adhoc and Sensor Systems (MASS '09) (2009)

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See detailTwo separable mechanisms are responsible for mental stress effects on high frequency heart rate variability: an intra-individual approach in a healthy and a diabetic sample
Kuehl, L. K.; Deuter, C. E.; Richter, S. et al

in International Journal of Psychophysiology (2015), 95(3), 299-303

Detailed reference viewed: 170 (2 UL)
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See detailTwo Views on Text Structure: Using Rhetorical Structure Theory and Register & Genre Theory in Improving Students' Academic Writing
Gruber, Helmut; Huemer, Birgit UL

in Odense Working Papers in Language and Communication (2008), 29

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See detailTwo worlds of educational research? Comparing the levels, objects, disciplines, methodologies and themes in educational research in the United Kingdom and Germany, 2005–2015
Zapp, Mike UL; Marques, Marcelo UL; Powell, Justin J W UL

in Research in Comparative and International Education (2017), 12(4), 375-397

Embedded in social worlds, education systems and research reflect distinct national trajectories. We compare two contrasting traditions of educational research (ER). Whereas British ER exhibits a ... [more ▼]

Embedded in social worlds, education systems and research reflect distinct national trajectories. We compare two contrasting traditions of educational research (ER). Whereas British ER exhibits a multidisciplinary and pragmatic character, German ER reflects pedagogy and mainly humanities-based traditions. Yet, in both countries, policymakers’ growing demand for evidence in ER resulted in increased funding, specific research programs, and mandatory large-scale assessments. These have reshaped the field, suggesting more similar ER agendas. Based on a comprehensive original dataset of basic ER projects funded by the main grant- making agencies in both countries (2005–2015), we analyze five dimensions: levels, objects, disciplines, methodologies, and themes. We find epistemic drift, with partial convergence characterized by a multi-level focus, multidisciplinary approach, strongly empirical and quantitative methodology, and a premium on teaching and learning themes. The cases remain distinct in exploring systemic questions in a wider contextual frame (UK) or concentrating more narrowly on the individual learner (Germany). [less ▲]

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See detailTwo years of continuous measurements of tidal and nontidal variations of gravity in Boulder, Colorado
van Dam, Tonie UL; Francis, Olivier UL

in Geophysical Research Letters (1998), 25(3), 393-396

We report here on the results of an analysis of 2 years of data from NOAA’s superconducting gravimeter located at the Table Mountain Gravity Observatory in Boulder, Colorado. Observed tidal parameters ... [more ▼]

We report here on the results of an analysis of 2 years of data from NOAA’s superconducting gravimeter located at the Table Mountain Gravity Observatory in Boulder, Colorado. Observed tidal parameters, corrected for ocean loading effects, are compared with theoretical tidal parameters predicted for a non-hydrostatic inelastic Earth model and demonstrate excellent agreement. Tidal residuals, corrected for polar motion and a linear instrument drift are highly correlated with gravity changes measured by two absolute gravimeters over the same time period. The admittance to local pressure i s found to be -0.356 mGal/mbar. However, this admittance factor is found to be seasonally and frequency dependent. Correlations between rainfall events and gravity changes are observed. Attempts to model these gravity changes as exponential functions of time were unsuccessful. [less ▲]

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See detailTwo years post-stroke, Luxembourgish informal caregivers’ life satisfaction and their couple and family repercussions
Lurbe-Puerto, Katia UL; Baumann, Michèle UL; Le Bihan, Etienne UL

in Sociology of Health (2010)

This study aims to improve our understanding of the changes in the couple and family lives of stroke survivors’ caregivers and to analyse the relationships between the Caregivers’ Life Satisfaction (CLS ... [more ▼]

This study aims to improve our understanding of the changes in the couple and family lives of stroke survivors’ caregivers and to analyse the relationships between the Caregivers’ Life Satisfaction (CLS) and the social and emotional repercussions of the caregiving role, two years after this event. Life satisfaction, optimism about the future, happiness and other subjective well-being aspects have attracted the European policymakers, leading to the Eurofund to introduce a “life satisfaction” dimension in the European Quality of Life Surveys (EQLS). The general subjective appraisal of one’s life is now an indicator next to objective measures of economic performance, such as GDP. How is life satisfaction for the main informal caregivers of stroke-survivors, at the Grand-duchy of Luxembourg (one of the smallest UE country, 502 500 hab. (01/2010), 2600 km2). Individual and family upheavals stroke-related have a major effect on the survivor’s life, and on the close relatives and friends’ ones. «The self-assertion on the harmony of the stroke survivor-caregiver pairs» is the strategy to approach the issue. The implications of these changes are determined by the partners’ trajectory. The CLS is disrupted by stroke, but a lack of information remains on caregivers’ needs, mostly on the repercussions on the couple and family relationships and projects. Over twelve months, 62 pairs (among them 51 couples) of stroke survivors (64.4 mean age; majors impairments: sensory 53.2% and memory 38.7%) and their main informal caregivers (62 mean age, 61.7% women) consented to participate at a National Survey. Research assistants interviewed them at home, with a face-to-face questionnaire. Caregivers evaluated, on a four-point scale, a list of repercussions; these assertions were built up from a qualitative exploratory study. The LS ten-point scaled was dichotomised in “low (<=7 of 10)” and “high (>7 of 10) life satisfaction” (LLS vs HLS)”. Our research protocol was approved by the National Committee of Research Ethics and the Committee for Data Protection. Stroke survivors’ LS were lightly inferior than the CLS (mean=8) and no significant differences were observed between their socio-demographic characteristics. Comparing the responses obtained on the couple repercussions, the caregivers with LLS had emphasised the impacts of the care provided to their recipients: « The stroke was experienced as a drama that our couple has never overcome” (54.2 LLS vs 17,2% HLS; p≤0.001);“I cannot leave anymore the stroke survivor alone for a long time” (60.7% LLS vs 17.4% HLS; p=0.001); « The stroke has ended with all the life projects that as a couple we made» (45.8 LLS vs 11.1% HLS ; p≤ 0.05); “The stroke has brought serious turnovers in my couple” (57.1 LLS vs 25.9% HLS ; p≤ 0.05). Regarding family repercussions, the caregivers with LLS had underlined the impacts of their caregiving role: "The stroke is often a cause of the distance problems we have with our children" (23.1% LLS vs 0.0% HLS; p≤0.01), and “The stroke has brought serious turnovers in my family” (82.8% LLS vs 51.7% HLS; p≤0.05). CLS and survivors LS were close. Inequalities regarding CLS were identified. Evaluating repercussions on CLS is needed in enabling stroke survivors to live at home. Long-term informal care sustainability has been overlooked; innovative accompaniment and counselling are developed to follow Helsingborg Declaration on European Stroke Strategies. [less ▲]

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See detailTwo years post-stroke, predictors of survivors’ life satisfaction: common associations between Luxembourg and Portugal.
Baumann, Michèle UL; Lurbe-Puerto, Kàtia UL; Bucki, Barbara UL et al

in Psychology and Health (2011), 26(suppl 2), 90

Two years post-stroke, we analysed the survivors’ LS by looking at its associations with their QoL and their informal caregivers’ QoL and drawing from a national survey in Luxembourg (LU) and a Braganc¸a ... [more ▼]

Two years post-stroke, we analysed the survivors’ LS by looking at its associations with their QoL and their informal caregivers’ QoL and drawing from a national survey in Luxembourg (LU) and a Braganc¸a district survey in Portugal (PT). Method: Face-to-face structured interviews at home. Findings: For LU, the 94 stroke survivors’ LS was linked with all survivors’ Newsqol (Newscstle Stroke-Specific Quality of Life)* dimensions, with strong links for feelings and sleep. No association was observed with their 62 caregivers’ Whoqol-bref domains. For PT, the 50 survivors’ LS was correlated with all Newsqol’ dimensions (except vision) with strong relations for mobility, self-care, feelings and sleep, and with all 46 caregivers’ Whoqol-bref domains (physical, psychological, environmental and social relationships). Discussion: Common associations exist with stronger links for PT. Survivors’ QoL is a predictor of LS which is a useful patient-centred marker for the practice of the psychologists who develop family interventions and counselling programmes. [less ▲]

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See detailTwo years post-stroke: the effects of dissatisfaction with services and quality of information on patients’ quality of life in Luxembourg
Baumann, Michèle UL; Chau, Nearkasen

in Best Investissements for Health (2013)

Stroke is the second cause of death and helps from socio-medical services and information are crucial for promoting post-stroke patient’s quality of life. We analysed the impact of dissatisfaction with ... [more ▼]

Stroke is the second cause of death and helps from socio-medical services and information are crucial for promoting post-stroke patient’s quality of life. We analysed the impact of dissatisfaction with these services and information on post-stroke patient’s quality of life taking into account socioeconomic factors and functional impairments, which remains little documented. Methods: All 2-year post-stroke patients admitted to all hospitals in Luxembourg were identified using the only care-expenditure-reimbursement national system database. Clinical diagnosis of cerebrovascular disease was confirmed. Ninety four patients living at home (mean age 65.5) were face-to-face interviewed to gather socioeconomic characteristics (sex, age, nationality, family structure, education, occupation, income and residence place) and to measure quality of life (using the Newcastle Stroke-Specific Quality of Life measure, noted Newsqol (assessing mobility, self-care, pain, cognition, vision, communication, feelings, relationships, emotion, sleep and fatigue) and dissatisfaction with various services and information. Data were analysed using multiple regression models. Results: Most functional impairments impacted multiple Newsqol dimensions. Language impairment related to most Newsqol dimensions (mobility, self-care, cognition, vision, communication, feelings, relationships, sleep and fatigue); memory impairment to pain, cognition, feeling, emotion, and sleep; motor impairment to mobility, self-care, pain, feeling and fatigue; visual impairment to relationships in addition to vision; sensory impairment to pain, communication, emotion and sleep. Controlling for all socioeconomic factors and functional impairments evidenced that dissatisfactions with helps and information about helps from community services were strongly associated with all Newsqol dimensions including mainly self-care, communication, mental feeling, relationships, emotion and sleep. Lack of information about stroke was associated with relationships and sleep. Conclusion: Improving help services and information about helps and cerebrovascular disease in chronic phase should highly impact patients’ quality of life. It is important to promote patient-centred care focusing on information need, financial need, and medical, technical and personal aids. [less ▲]

Detailed reference viewed: 128 (1 UL)