cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Degree Associated Reconstruction Parameters of Total Graphs
Creators: name: Anusha Devi, P.
name: Monikandan, S.
Publisher: name: Faculty of Science, University of Calgary
Year: 2017
Subjects: reconstruction number, degree associated reconstruction number, degree associated edge reconstruction number

description: A card (ecard) of a graph G is a subgraph formed by deleting a vertex (an edge). A dacard (da-ecard) specifies the degree of the deleted vertex (edge) along with the card (ecard). The degree associated reconstruction number (degree associated edge reconstruction number ) of a graph G, drn(G) (dern(G)), is the minimum number of dacards (da-ecards) that uniquely determines G. In this paper, we investigate these two parameters for the total graph of certain standard graphs.
description: Contributions to Discrete Mathematics, Vol 12, No 2 (2017)
Parity Violation in nd Interactions
Creators: name: Vanasse, Jared
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the parity-violating amplitudes in the nd interaction with pionless effective field theory to LO. Matching the parity violating low energy constants to the DDH coefficients we make numerical predictions for parity-violating observables. In particular we give predictions for the spin rotation of a neutron on a deuteron target, and target and beam asymmetries in nd scattering.
Gossiping for Communication-Efficient Broadcast
Creators: name: Tsimos, Georgios
name: Loss, Julian
name: Papamanthou, Charalampos
Publisher: name: CISPA
Year: 2023

description: Byzantine Broadcast is crucial for many cryptographic pro- tocols such as secret sharing, multiparty computation and blockchain consensus. In this paper we apply gossiping (propagating a message by sending to a few random parties who in turn do the same, until the mes- sage is delivered) and propose new communication-efficient protocols, under dishonest majority, for Single-Sender Broadcast (BC) and Parallel Broadcast (PBC), improving the state-of-the-art in several ways. As our first warm-up result, we give a randomized protocol for BC which achieves O(n^2κ^2) communication complexity from plain public key setup assumptions. This is the first protocol with subcubic communication in this setting, but does so only against static adversaries. Using some ideas from our BC protocol, we then move to our central con- tribution and present two protocols for PBC that are secure against adap- tive adversaries. To the best of our knowledge we are the first to study PBC specifically: All previous approaches for parallel BC (PBC) naively run n instances of single-sender Broadcast, increasing the communication complexity by an undesirable factor of n. Our insight of avoiding black- box invocations of BC is particularly crucial for achieving our asymptotic improvements. In particular: 1. Our first PBC protocol achieves O(n^3κ^2) communication complexity and relies only on plain public key setup assumptions. 2. Our second PBC protocol uses trusted setup and achieves nearly optimal communication complexity O(n^2κ^4). Both PBC protocols yield an almost linear improvement over the best known solutions involving n parallel invocations of the respective BC protocols such as those of Dolev and Strong (SIAM Journal on Comput- ing, 1983) and Chan et al. (Public Key Cryptography, 2020). Central to our PBC protocols is a new problem that we define and solve, that we call “Converge”. In Converge, parties must run an adaptively-secure and efficient protocol such that by the end of the protocol, the honest parties that remain possess a superset of the union of the inputs of the initial honest parties.
Sediment assessment of stormwater retention ponds within the urban environment of Calgary, Alberta
Creators: name: Westerbeek, Krista Lynn
Publisher: name: University of Calgary
Year: 2007

description: Bibliography: p. 116-124
description: Some pages are in colour.
description: The treatment of urban storm water by retention ponds is known to be effective for water quality improvement and storm flow management and in the past two decades has become widely implemented. However, limited research has been conducted on the quality of the resulting sediment within ponds. This research focuses on comprehensive sampling of sediment from stormwater ponds that have been created in Calgary, Alberta. Electrical conductivity and the sodium adsorption ratio consistently exceeded CCME agricultural soil quality guidelines, indicating a city wide salt contamination issue. F3 hydrocarbon fractions, cadmium, chromium, copper, lead, selenium and zinc were also identified as parameters of concern. In particular 61 Ave SE Duck pond displayed the greatest diversity and severity of contaminants possibly due to the industrial catchment area. Disposal options were subsequently restricted to landfill disposal with the exception of Deerfoot Trail & 22X pond, wherein disposal on commercial land is acceptable.
Experiences and Impacts of a Cross-Cultural Professional Development Program from the Perspective of Chinese Visiting Scholars
Creators: name: Fedoruk, Lisa Margaret
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Cross-cultural professional development
subject: International visiting scholars
subject: Internationalization
subject: Cultural humility
subject: Community of Practice
subject: Education--Adult and Continuing
subject: Education--Higher

description: Visiting scholar programs as a practice of internationalization in higher education are an increasingly common form of cross-cultural professional development in the era of globalization. Visiting scholars from China are among the largest group of academics and researchers in the world to engage in international programs and activities; however, scholarship on their experiences is limited. The purpose of this study was to better understand how a group of Chinese visiting scholars made meaning of their experiences, having participated in a 3-month professional development program in Canada, and if these experiences influenced and impacted their teaching practices upon returning to China. I employed a qualitative, descriptive case study to examine the real-life situations that the participants’ experiences were rooted in. I conducted semistructured interviews with 10 participants and constantly compared the data with participant reflective documents and researcher reflective notes to gain an in-depth understanding of the phenomenon. Guided by a transformative learning theoretical framework, I examined the motivations of the Chinese visiting scholars to partake in the program, what constituted significant learning moments and how they were experienced and interpreted, and the resulting impact on participants’ perspectives and teaching practices upon returning to their home higher education institutions. The findings revealed that a fundamental motivation for participants to sojourn abroad was to fulfil an international requirement within their teaching positions and for eventual job advancement. Participants were also motivated to attain cross-cultural professional development by enhancing their teaching practices and English proficiency. An additional finding pertaining to significant learning moments encompassed the challenges surrounding English language proficiency and cultural adjustments within higher education contexts, including student-centred instructional strategies and teaching theories. Through an organically developed community of practice and continuous reflection and dialogue, participants were able to overcome challenges and implement their knowledge upon returning to their home institutions. This qualitative study contributes to the scholarship on international practices in higher education and includes valuable strategies for all stakeholders to incorporate to enhance future cross-cultural professional development programs and prepare future scholars to embark on a similar journey.
PI-Cut-Choo and Friends: Compact Blind Signatures via Parallel Instance Cut-and-Choose and More
Creators: name: Chairattana-Apirom, Rutchathon
name: Wagner, Benedikt
name: Hanzlik, Lucjan
name: Loss, Julian
name: Lysyanskaya, Anna
Publisher: name: CISPA
Year: 2023

description: Blind signature schemes are one of the best-studied tools for privacy-preserving authentication. Unfortunately, known constructions of provably secure blind signatures either rely on non-standard hardness assumptions, or require parameters that grow linearly with the number of concurrently issued signatures, or involve prohibitively inefficient general techniques such as general secure two-party computation. Recently, Katz, Loss and Rosenberg (ASIACRYPT'21) gave a technique that, for the security parameter n transforms blind signature schemes secure for O(log n) concurrent executions of the blind signing protocol into ones that are secure for any poly(n) concurrent executions. This transform has two drawbacks that we eliminate in this paper: 1) the communication complexity of the resulting blind signing protocol grows linearly with the number of signing interactions; 2) the resulting schemes inherit a very loose security bound from the underlying scheme and, as a result, require impractical parameter sizes. In this work, we give an improved transform for obtaining a secure blind signing protocol tolerating any poly(n) concurrent executions from one that is secure for O(log n) concurrent executions. While preserving the advantages of the original transform, the communication complexity of our new transform only grows logarithmically with the number of interactions. Under the CDH and RSA assumptions, we improve on this generic transform in terms of concrete efficiency and give (1) a BLS-based blind signature scheme over a standard-sized group where signatures are of size roughly 3 KB and communication per signature is roughly 120 KB; and (2) an Okamoto-Guillou-Quisquater-based blind signature scheme with signatures and communication of roughly 9 KB and 8 KB, respectively.
Visualizing the imperial mission of the Salvation Army : the frontispiece of 'In darkest England and the way out'
Creators: name: Wilson, Kelsey
Publisher: name: University of British Columbia
Year: 2011

description: In 1890 William Booth, the founder and “General” of the Salvation Army, a working class evangelical missionary organization, published In Darkest England and the Way Out. Booth’s book proposed an elaborate tripartite scheme to address the desperate situation of unemployment and poverty in East London and other urban centres in Britain in the late nineteenth-century. The publication outlined three successive stages in this project for social reform. A “City Colony” and a “Farm Colony” would provide food, shelter, training and work for the destitute and unemployed. Ultimately emigration to a “Colony Across the Sea” would offer new futures and new lives for those rehabilitated by the Salvation Army scheme. Two components of the book played key roles in the marketing of this project. One was a fold-out colour lithograph that featured a compelling image of the book’s reformative scheme and its slogan of ‘Work for All.’ The second was the book’s opening chapter that constructed an extended analogy between England’s urban centres and the recently published best-seller, Henry Morton Stanley’s In Darkest Africa (1890). Both this chapter and the book’s fold-out chromolithograph frontispiece drew on imperial and Christian tropes to attract the reader and to sell the Salvation Army’s project of social rehabilitation and colonial settlement. This thesis examines the imperial and Christian rhetoric at work in Darkest England, and in particular explores the persuasive role of the visual in the book’s frontispiece in articulating Booth’s complex and problematic scheme. To this end I explore the tensions inherent in Booth’s proposal in light of other philanthropic and social reform projects in late nineteenth-century Britain that targeted urban poverty, unemployment and emigration to the colonies. Set within this context, I argue that the representational strategies at work in the frontispiece image encouraged a powerful and performative enactment of the spiritual and social salvation that was a central goal of In Darkest England and the Way Out. I also argue that the visual modes employed in the colour illustration work to both mediate and contain the contradictory agendas that are revealed in Booth’s text.
Bounds for the $m$-Eternal Domination Number of a Graph
Creators: name: Henning, Michael
name: Klostermeyer, William
name: MacGillivray, Gary
Publisher: name: Faculty of Science, University of Calgary
Year: 2017
Subjects: dominating set; eternal dominating set; independent set; cubic graph; bipartite graph

description: Mobile guards on the vertices of a graph are used to defend the graph against an infinite sequence of attacks on vertices. A guard must move from a neighboring vertex to an attacked vertex (we assume attacks happen only at vertices containing no guard and that each vertex contains at most one guard). More than one guard is allowed to move in response to an attack. The $m$-eternaldomination number, $\edom(G)$, of a graph $G$ is the minimum number of guards needed to defend $G$ against any such sequence. We show that if $G$ is a connected graph with minimum degree at least~$2$ and of order~$n \ge 5$, then $\edom(G) \le \left\lfloor \frac{n-1}{2} \right\rfloor$, and this bound is tight. We also prove that if $G$ is a cubic bipartite graph of order~$n$, then $\edom(G) \le \frac{7n}{16}$.
description: Contributions to Discrete Mathematics, Vol 12, No 2 (2017)
Higher categories, colimits, and the blob complex
Creators: name: Morrison, Scott
name: Walker, Kevin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Category Theory (math.CT)
subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We summarize our axioms for higher categories, and describe the blob complex. Fixing an n-category C, the blob complex associates a chain complex B_*(W;C)$ to any n-manifold W. The 0-th homology of this chain complex recovers the usual topological quantum field theory invariants of W. The higher homology groups should be viewed as generalizations of Hochschild homology (indeed, when W=S^1 they coincide). The blob complex has a very natural definition in terms of homotopy colimits along decompositions of the manifold W. We outline the important properties of the blob complex, and sketch the proof of a generalization of Deligne's conjecture on Hochschild cohomology and the little discs operad to higher dimensions.
description: 7 pages
Group Irregular Labelings of Disconnected Graphs
Creators: name: Anholcer, Marcin
name: Cichacz-Przenioslo, Sylwia
Publisher: name: Faculty of Science, University of Calgary
Year: 2017
Subjects: Irregularity strength, Graph weighting, Graph labeling, Abelian group

description: We investigate the \textit{group irregularity strength} ($s_g(G)$) of graphs, i.e. the smallest value of $s$ such that taking any Abelian group $\gr$ of order $s$, there exists a function $f:E(G)\rightarrow \gr$ such that the sums of edge labels at every vertex are distinct. We give the exact values and bounds on $s_g(G)$ for chosen families of disconnected graphs. In addition we present some results for the \textit{modular edge gracefulness} $k(G)$, i.e. the smallest value of $s$ such that there exists a function $f:E(G)\rightarrow \zet_s$ such that the sums of edge labels at every vertex are distinct.
description: Contributions to Discrete Mathematics, Vol 12, No 2 (2017)
Conversion of Petroleum Coke into Valuable Products using Catalytic and Non-Catalytic Oxy-Cracking Reaction
Creators: name: Manasrah, Abdallah Darweesh
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: oxy-cracking
subject: residual feedstock
subject: petroleum coke
subject: quinolin-65 (Q-65)
subject: copper-silicates
subject: humic acids
subject: oxidation
subject: gasification
subject: Energy
subject: Engineering--Chemical
subject: Engineering--Environmental
subject: Engineering--Petroleum

description: Every year millions of tons petroleum coke (petcoke) is generated as a by-product from bitumen and heavy oil upgrading due to the increasing demand in energy. Petcoke is a carbonaceous solid consisting of polycyclic aromatic hydrocarbons with low hydrogen content, derived from the processing of oil sands and oil refineries. The upgrading and treating of petcoke typically include thermal techniques such as gasification and combustion. However, several challenges limit the effectiveness of these conventional processes such as sulfur and CO2 emissions as well as high energy and costs associated with low efficiency. Therefore, finding an alternative, efficient, environmentally-friendly and cost-effective technology to treat these massive amounts of petcoke is needed. In this study, an oxy-cracking technique, which is a combination of oxidation and cracking reactions, is introduced as an alternative approach for petcoke utilization. This oxy-cracking takes place in basic aqueous media, at mild operation temperatures (170-230 oC) and pressures (500-600 psi). The oxy-cracking reaction mechanism was investigated using Quinolin-65 (Q-65) as a model molecule mimicking the residual feedstocks. Theoretical calaculations along with experimental reaction were carried out on Q-65 to explore the reaction pathways. Consequently, several operating conditions on petcoke oxy-cracking were investigated, such as temperature, oxygen pressure, reaction time, particle size and mixing rate to optimize the solubility and selectivity of oxy-cracked products. To enhance the oxy-cracking reaction conversion, an in-house prepared copper-silicate catalyst was introduced and characterized using BET, SEM, FTIR and XRD techniques. The oxy-cracking technique successfully converted the petcoke into valuable products, particularly humic acids analogs with other functional groups such as carboxylic, carbonyl, and sulfonic acids, as confirmed by FTIR, XPS and NMR analyses, in addition to minimal emission of CO2. Interestingly, based on the experimental findings, the metal contents in the obtained oxy-cracked products are significantly lower than that in the virgin petcoke. Consequently, the heating value and oxidation behaviour of the oxy-cracked products was investigated using TGA. These results showed that the oxy-cracked petcoke is easier and faster to oxidize compared to the virgin petcoke, suggesting that the oxy-cracked petcoke could be an alternative-clean fuel for power generation.
Permutations avoiding connected graphs
Creators: name: Sauer, Norbert
name: Zaguia, Imed
Publisher: name: Faculty of Science, University of Calgary
Year: 2017

description: There is a permutation of the vertices of a tree for which no proper subtree on at least two vertices is mapped to a subtree, if and only if twice the number of its endpoints is less than or equal to the number of points of the tree;

Theorem 4.1. The following more general result follows:Let G = (V (G), E(G)) be a simple graph and let C(G) be the set of subsets

A  V (G) which induce a connected subgraph of G containing at least two vertices and let Π(G) be the set of permutations of V (G) which do not map an element of C(G) to an element of C(G). In the case where G has n vertices and at most n − 1 edges we give a necessary and suﬃcient condition on G so that Π(G) [SPECIAL CHARACTER]= ∅.
AMS subject classiﬁcation (2000): 05C70
description: Contributions to Discrete Mathematics, Vol 12, No 2 (2017)
Shellability, vertex decomposability, and lexicographical products of graphs
Creators: name: Vander Meulen, Kevin N
name: Van Tuyl, Adam
Publisher: name: Faculty of Science, University of Calgary
Year: 2017
Subjects: independence complex, vertex decomposable, shellable, circulant graphs

description: In this note we describe when the independence complex of G[H], the lexicographical product of two graphs G and H, is either vertex decomposable or shellable.  As an application, we show that there exists an infinite family of
graphs whose independence complexes are shellable but not vertex
decomposable.
description: Contributions to Discrete Mathematics, Vol 12, No 2 (2017)
Explainable Arguments
Creators: name: Hanzlik, Lucjan
name: Kluczniak, Kamil
Publisher: name: CISPA
Year: 2023

description: We introduce an intriguing new type of argument systems with the additional property of being explainable. Intuitively by explainable, we mean that given any argument under a statement, and any witness, we can produce the random coins for which the Prove algorithm outputs the same bits of the argument. This work aims at introducing the foundations for the interactive as well as the non-interactive setting. We show how to build explainable arguments from witness encryption and indistinguishability obfuscation. Finally, we show applications of explainable arguments. Notably, we construct deniable chosen-ciphertext secure encryption. Previous deniable encryption scheme achieved only chosen plaintext security.
Internal and external duality in abstract polytopes
Creators: name: Cunningham, Gabe
name: Mixer, Mark
Publisher: name: Faculty of Science, University of Calgary
Year: 2017
Subjects: abstract polytope; self-dual polytope; regular polytope

description: We define an abstract regular polytope to be internally self-dual if its self-duality can be realized
 as one of its symmetries. This property has many interesting implications on the structure of the polytope,
 which we present here. Then, we construct many examples of internally self-dual polytopes.
 In particular, we show that there are internally self-dual regular polyhedra of each
 type $\{p, p\}$ for $p \geq 3$ and that there are both infinitely many internally self-dual and infinitely many externally self-dual polyhedra
 of type $\{p, p\}$ for $p$ even. We also show that there are internally self-dual polytopes in each rank,
 including a new family of polytopes that we construct here.
description: Contributions to Discrete Mathematics, Vol 12, No 2 (2017)
Archival archaeology of the sćəlexw village site DhRt-2 (Musqueam East)
Creators: name: Hynes, Kyla Marie
Publisher: name: University of British Columbia
Year: 2011

description: This paper is an archaeological analysis of archival data relating to the sćəlexw village site, DhRt-2 (Musqueam East), located on the Musqueam IR 2 Reserve in Vancouver. DhRt-2 is the type-site for the Stselax Phase (approximately 1200 years ago to 1808 AD) in Charles Borden’s Fraser Delta Sequence. Despite being the subject of various research projects since the 1950s, with major excavations carried out from 1950-1961, a comprehensive site report was never written. Instead, Borden’s (1950; 1971) publications contained brief summaries of artifact types related to the Stselax Phase. The aim of this thesis is to collate and analyze the archival data from these excavations, focusing on stratigraphy and architectural features. This is supplemented by data from more recent research projects to provide a clearer understanding of settlement patterns and the site’s occupational history through time. Most importantly, the intention is to provide a comprehensive report of the early excavations that will be of value to archaeological researchers and to the descendant Musqueam community. This paper includes a history of the archaeological research at the site, as well as a presentation of the existing archival materials and analysis of the archaeological data. Three distinct occupational zones (related groups of layers and associated features) are identified and discussed: a wetland/river estuary, shell midden/terrace, and a village zone. Variations in the sequence of zones between excavation areas (Trenches 1, 2, and 3; Charles House; Units A-D) are considered as they relate to village development through time. Together, these analyses and data provide the first comprehensive view of this important archaeological site since excavations began in 1950.
How Not to Handle Keys: Timing Attacks on FIDO Authenticator Privacy
Creators: name: Kepkowski, Michal
name: Hanzlik, Lucjan
name: Wood, Ian D.
name: Kaafar, Mohamed Ali
Publisher: name: CISPA
Year: 2023

description: This paper presents a timing attack on the FIDO2 (Fast IDentity Online) authentication protocol that allows attackers to link user accounts stored in vulnerable authenticators, a serious privacy concern. FIDO2 is a new standard specified by the FIDO industry alliance for secure token online authentication. It complements the W3C WebAuthn specification by providing means to use a USB token or other authenticator as a second factor during the authentication process. From a cryptographic perspective, the protocol is a simple challenge-response where the elliptic curve digital signature algorithm is used to sign challenges. To protect the privacy of the user the token uses unique key pairs per service. To accommodate for small memory, tokens use various techniques that make use of a special parameter called a key handle sent by the service to the token. One of the most popular techniques used by leading token manufacturers (e.g. Yubico), termed key wrapping, stores the encrypted secret key in the server’s database and provides it to the token via the key handle parameter. We identify and analyse a vulnerability in the way the processing of key handles is implemented that allows attackers to remotely link user accounts on multiple services. We show that for vulnerable authenticators there is a difference between the time it takes to process a key handle for a different service but correct authenticator, and for a different authenticator but correct service. This difference can be used to perform a timing attack allowing an adversary to link the same authenticator across different services. Two of the eight hardware authenticators we tested were vulnerable despite FIDO level 1 certification, indicating a not insignificant problem. This vulnerability cannot be easily mitigated on authenticators because, for security reasons, they usually do not allow firmware updates. In addition, we show that due to the way existing browsers implement the WebAuthn standard, the attack can be executed remotely. However, we discuss countermeasures that can be implemented by browser providers to mitigate the remote form of the attack
Hindered proton collectivity in 28S: Possible magic number at Z=16
Creators: name: Togano, Y.
name: Yamada, Y.
name: Iwasa, N.
name: Yamada, K.
name: Motobayashi, T.
name: Aoi, N.
name: Baba, H.
name: Bishop, S.
name: Cai, X.
name: Doornenbal, P.
name: Fang, D.
name: Furukawa, T.
name: Ieki, K.
name: Kawabata, T.
name: Kanno, S.
name: Kobayashi, N.
name: Kondo, Y.
name: Kuboki, T.
name: Kume, N.
name: Kurita, K.
name: Kurokawa, M.
name: Ma, Y. G.
name: Matsuo, Y.
name: Murakami, H.
name: Matsushita, M.
name: Nakamura, T.
name: Okada, K.
name: Ota, S.
name: Satou, Y.
name: Shimoura, S.
name: Shioda, R.
name: Tanaka, K. N.
name: Takeuchi, S.
name: Tian, W.
name: Wang, H.
name: Wang, J.
name: Yoneda, K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The reduced transition probability B(E2;0 ->2+) for 28S was obtained experimentally using Coulomb excitation at 53 MeV/nucleon. The resultant B(E2) value 181(31) e2fm4 is smaller than the expectation based on empirical B(E2) systematics. The double ratio |M_n/M_p|/(N/Z) of the 0+ ->2+ transition in 28S was determined to be 1.9(2) by evaluating the M_n value from the known B(E2) value of the mirror nucleus 28Mg, showing the hindrance of proton collectivity relative to that of neutrons. These results indicate the emergence of the magic number Z=16 in the |T_z|=2 nucleus 28S.
description: 10 pages, 3 figures. Published in Phys. Rev. Lett (http://link.aps.org/doi/10.1103/PhysRevLett.108.222501)
An exploration of the communication strategies of three early think tanks
Creators: name: Hexham, Jeremy Johnston
Publisher: name: Arts
Year: 2018
Subjects: subject: Political Communication
subject: Fabian Society
subject: Afrikaner Broederbond
subject: South African Institute of Race Relations
subject: Think Tank
subject: Rational-scientific communications
subject: Cultural communications
subject: Worldview
subject: Economics--History
subject: Political Science
subject: FOS: Political science

description: This thesis discusses the development of communications strategies by three early think tanks. These are the British Socialist Fabian Society founded in 1884, the South African Afrikaner Broederbond founded in 1918, and the South African Institute of Race Relations (SAIRR) founded in 1929. All three are generally accepted as highly influential organizations. The Fabian Society is arguably the earliest modern think tank. Its members developed two modes of communication which are identified in this thesis as rational-scientific and cultural-identity communications. In practice the Fabian Society concentrated on rational-scientific communications. The Afrikaner Broederbond developed cultural-identity communications while the SAIRR primarily used rational-scientific communications combined with the strategic use of cultural-identity communications. All three organizations had a major impact on their host societies for good and ill. The Fabians and the Broederbond were the most effective although the long-term influence of the SAIRR should not be underestimated. What the thesis does is create a vocabulary for understanding certain types of think tank communications and provides a framework for the future study and discussion of political communications.
Q-factor control of a microcantilever by mechanical sideband excitation
Creators: name: Venstra, W. J.
name: Westra, H. J. R.
name: van der Zant, H. S. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences
subject: 34C15

description: We demonstrate the coupling between the fundamental and second flexural mode of a microcantilever. A mechanical analogue of cavity-optomechanics is then employed, where the mechanical cavity is formed by the second vibrational mode of the same cantilever, coupled to the fundamental mode via the geometric nonlinearity. By exciting the cantilever at the sum and difference frequencies between fundamental and second flexural mode, the motion of the fundamental mode of the cantilever is amplified and damped. This concept makes it possible to enhance or suppress the Q-factor over a wide range.
description: 9 pages, 3 figures
A Bayesian Maximum Entropy approach to address the change of support problem in the spatial analysis of childhood asthma prevalence across North Carolina
Creators: name: Lee, S.-J.
name: Serre, M.L.
name: Yeatts, K.B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: The spatial analysis of data observed at different spatial observation scales leads to the change of support problem (COSP). A solution to the COSP widely used in linear spatial statistics consists in explicitly modeling the spatial autocorrelation of the variable observed at different spatial scales. We present a novel approach that takes advantage of the nonlinear Bayesian Maximum Entropy (BME) extension of linear spatial statistics to address the COSP directly without relying on the classical linear approach. Our procedure consists in modeling data observed over large areas as soft data for the process at the local scale. We demonstrate the application of our approach to obtain spatially detailed maps of childhood asthma prevalence across North Carolina (NC). Because of the high prevalence of childhood asthma in NC, the small number problem is not an issue, so we can focus our attention solely to the COSP of integrating prevalence data observed at the county level together with data observed at a targeted local scale equivalent to the scale of school districts. Our spatially detailed maps can be used for different applications ranging from exploratory and hypothesis-generating analyses to targeting intervention and exposure mitigation efforts.
Sub-arcsecond SMA observations of the prototype Class 0 object VLA1623 at 1.3 mm: A single protostar with a structured outflow cavity ?
Creators: name: Maury, A. J.
name: Ohashi, N.
name: Andre, Ph.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present 1.3-mm subarcsecond SMA observations of the prototypical Class 0 protostar VLA1623. We report the detection of 1.3-mm continuum emission both from the central protostellar component VLA1623 and two additional sources, Knot-A and Knot-B, which have been already detected at longer wavelengths. Knot-A and Knot-B are both located along the western cavity wall opened by the protostellar outflow from VLA1623. Our SMA observations moreover show that these two continuum sources are associated with bright, high-velocity 12CO(2-1) emission, slightly shifted downstream of the outflow propagation direction with respect to the 1.3-mm continuum emission peaks. The alignment of Knot-A and Knot-B along the protostellar outflow cavity, the compactness of their 1.3-mm continuum emission and the properties of the associated CO emission suggest that these two sources trace outflow features due to shocks along the cavity wall, rather than protostellar objects. While it was considered as one of the best examples of a close protobinary system so far, the present analysis suggests that the prototypical Class 0, VLA1623, is single on the scales a>100 AU probed by our SMA observations. Moreover, we present here the second robust case of compact millimeter continuum emission produced by interactions between the protostellar jet and the envelope of a Class 0 protostar, which suggests a high occurrence of these outflow features during the embedded phase.
description: Accepted for publication in Astronomy and Astrophysics. Low resolution figures
Towards an Understanding of the Influence of Student Leadership Development on Early-Career Engineers
Creators: name: Paul, Robyn Mae
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Engineering Leadership
subject: Student Leadership Development
subject: engineering education
subject: Graduate Attributes
subject: Qualitative Analysis
subject: Education--Higher
subject: Education--Sciences
subject: Engineering--Civil

description: New engineering graduates must be equipped with diverse skillsets beyond their technical foundations to help solve the challenges of the twenty-first century. Among these skills includes an increasing recognition of the importance of engineering leadership. As a developing field of research, there is limited clarity on what is engineering leadership and the influence of leadership development on early-career engineers. The Schulich School of Engineering launched the Maier Student Leadership Program in 2006 to help engineers reach their full career potential. This thesis presents the reflections on this program and moves towards an understanding of its influence on early-career engineers. The most influential factors were found to be: humility, empathy, and curiosity. These three constructs, which were fostered through the Maier Program, provide alumni with valuable skillsets in the first 5-10 years of their career. Additionally, this thesis presents a proposed definition of engineering leadership to provide clarity on the concept.
MOESM1 of Transcriptional network analysis on brains reveals a potential regulatory role of PPP1R3F in autism spectrum disorders
Creators: name: Doostparast Torshizi, Abolfazl
name: Duan, Jubao
name: Wang, Kai
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified

description: Additional file 1. Detailed explanation of the methods being used in this study.
A framework for constructing Single Secret Leader Election from MPC
Creators: name: Backes, Michael
name: Berrang, Pascal
name: Hanzlik, Lucjan
name: Pryvalov, Ivan
Publisher: name: CISPA
Year: 2023

description: The emergence of distributed digital currencies has raised the need for a reliable consensus mechanism. In proof-of-stake cryptocurrencies, the participants periodically choose a closed set of validators, who can vote and append transactions to the blockchain. Each validator can become a leader with the probability proportional to its stake. Keeping the leader private yet unique until it publishes a new block can significantly reduce the attack vector of an adversary and improve the throughput of the network. The problem of Single Secret Leader Election (SSLE) was first formally defined by Boneh et al. in 2020. In this work, we propose a novel framework for constructing SSLE protocols, which relies on secure multi-party computation (MPC) and satisfies the desired security properties. Our framework does not use any shuffle or sort operations and has a computational cost for N parties as low as O(N) of basic MPC operations per party. We improve the state-of-the- art for SSLE protocols that do not assume a trusted setup. Moreover, our SSLE scheme efficiently handles weighted elections. That is, for a total weight S of N parties, the associated costs are only increased by a factor of logS. When the MPC layer is instantiated with techniques based on Shamir’s secret-sharing, our SSLE has a communication cost of O(N2) which is spread over O(log N) rounds, and can tolerate up to t < N/2 of faulty nodes without restarting the protocol, and its security relies on DDH in the random oracle model. When the MPC layer is instantiated with more efficient techniques based on garbled circuits, our SSLE requires all parties to participate, up to N − 1 of which can be malicious, and its security is based on the random oracle model.
Generalization of the Beck-Cohen superstatistics
Creators: name: Sob'yanin, Denis Nikolaevich
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Generalized superstatistics, i.e., a "statistics of superstatistics," is proposed. A generalized superstatistical system comprises a set of superstatistical subsystems and represents a generalized hyperensemble. There exists a random control parameter that determines both the density of energy states and the distribution of the intensive parameter for each superstatistical subsystem, thereby forming the third, upper level of dynamics. Generalized superstatistics can be used for nonstationary nonequilibrium systems. The system in which a supercritical multitype age-dependent branching process takes place is an example of a nonstationary generalized superstatistical system. The theory is applied to pair production in a neutron star magnetosphere.
description: 7 pages, no figures
Aspects of observational red giant population seismology
Creators: name: De Ridder, Joris
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The space missions CoRoT and Kepler provide us with large samples of red giant stars wherein non-radial solar-like oscillations can be detected. This leads to the exciting opportunity to do population seismology. In this paper we give a short overview of some relevant technical aspects of the two satellites, we list and comment on some important target selection biases relevant for population seismology, and we make a case to use kernel density estimates as an alternative for histograms to characterize population characteristics
description: Proc. of the workshop "Red Giants as Probes of the Structure and Evolution of the Milky Way" (Roma, 15-17 Nov 2010), Astrophysics and Space Science Proceedings, ISBN 978-3-642-18417-8 (eds. A. Miglio, J. Montalban, A. Noels). Part of RedGiantsMilkyWay/2011/ proceedings available at http://arxiv.org/html/1108.4406v1
Epithelial: Helicobacter pylori interactions
Creators: name: Fedwick, Jason P.
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 126-141
description: The dynamic and selective barrier formed by the epithelial cells of the human gastric mucosa is crucial in the protection against microbial pathogens. Peptides produced by the human host such as epidermal growth factor (EGF) are important in maintaining mucosal integrity and protecting the host from bacterial colonization. This study investigated the effect of H. pylori, a human gastric pathogen implicated in the development of gastroduodenal ulcers and gastric cancers, on epithelial barrier structure and function in vivo and in vitro. In addition, the effect of EGF on H. pylori colonization and viability was also examined. Bacterial load and gastritis increased over 14, 70 and 100 days in C57Bl/6 mice infected with H. pylori strain SS1. Infected mice also had a transient increase in gastric, but not duodenal, permeability on day 73 of the infection. Confluent, non-transformed intestinal epithelial cells (SCBN) grown on Transwells and exposed to H. pylori strain SS1 (VacA+/CagA+) had an increase in the passage of 3000MW Dextran. In contrast, H. pylori strains LC11 (VacA+/CagA+) and LC20 (VacA-/CagA-) did not change the permeability of SCBN cells to 3000MW Dextran. By immunohistochemistry and western blotting, H. pylori strain SS 1 disrupted tight junction (TJ) occludin, claudin-4 and claudin-5 in SCBN cells. The addition of a specific inhibitor of MLCK prevented the increase in epithelial permeability and disruption of tight junctional claudin-4 and claudin-5. Oral, daily administration of human recombinant EGF (100Jµg/kg) to infected mice 10 days prior to sacrifice significantly lowered the number of H. pylori recovered from gastric tissues. However, co-culture of H. pylori and EGF (100µM) had no effect on bacterial growth or metabolism. Stomach sections from infected-EGF treated animals had a different pattern of surface carbohydrate expression compared to infected animals. Disruptions of the tight junction observed in this study implicate previously unrecognized host cell signaling pathways, including the regulation of tight junctional claudin-4, claudin-5 and the phosphorylation of myosin light chain, in the pathogenesis of H. pylori infection. In addition, oral administration of EGF, independent of a direct microbiocidal action, can decrease the colonization of the stomach by H. pylori.
CHIP and CRISP: Protecting All Parties Against Compromise through Identity-Binding PAKEs
Creators: name: Cremers, Cas
name: Naor, Moni
name: Paz, Shahar
name: Ronen, Eyal
Publisher: name: CISPA
Year: 2023

description: Recent advances in password-based key exchange (PAKE) protocols can offer stronger security guarantees for globally deployed security protocols. Notably, the OPAQUE protocol realizes saPAKE [Eurocrypt2018], strengthening the protection offered by aPAKE to compromised servers: after compromising an saPAKE server, the adversary still has to perform a full brute-force search to recover any passwords or impersonate users. However, (s)aPAKEs do not protect client storage, and can only be applied in the so-called asymmetric setting, in which some parties, such as servers, do not communicate with each other. Nonetheless, passwords are also widely used in symmetric settings, where a group of parties share a password and can all communicate (e.g., Wi-Fi with client devices, routers, and mesh nodes; or industrial IoT scenarios). In these settings, the (s)aPAKE techniques cannot be applied, and the state-of-the-art still involves handling plaintext passwords. In this work, we propose the notions of (strong) identity-binding PAKEs that improve this situation in two dimensions: they protect all parties from compromise, and can also be applied in the symmetric setting. We propose stronger counterparts to state-of-the-art security notions from the asymmetric setting in the UC model, and construct protocols that provably realize them. Our constructions bind the local storage of all parties to abstract identities, building on ideas from identity-based key exchange, but without requiring a third party. Our first protocol, CHIP, generalizes the security of aPAKE protocols to all parties, forcing the adversary to perform a brute-force search to recover passwords or impersonate others. Our second protocol, CRISP, additionally renders any adversarial pre-computation useless, thereby offering saPAKE-like guarantees for all parties, instead of only the server. We evaluate prototype implementations of our protocols and show that even though they offer stronger security, their performance is in line with, or even better than, state-of-the-art protocols.
Teaching Memory Circuit Elements via Experiment-Based Learning
Creators: name: Pershin, Y. V.
name: Di Ventra, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Emerging Technologies (cs.ET)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The class of memory circuit elements which comprises memristive, memcapacitive, and meminductive systems, is gaining considerable attention in a broad range of disciplines. This is due to the enormous flexibility these elements provide in solving diverse problems in analog/neuromorphic and digital/quantum computation; the possibility to use them in an integrated computing-memory paradigm, massively-parallel solution of different optimization problems, learning, neural networks, etc. The time is therefore ripe to introduce these elements to the next generation of physicists and engineers with appropriate teaching tools that can be easily implemented in undergraduate teaching laboratories. In this paper, we suggest the use of easy-to-build emulators to provide a hands-on experience for the students to learn the fundamental properties and realize several applications of these memelements. We provide explicit examples of problems that could be tackled with these emulators that range in difficulty from the demonstration of the basic properties of memristive, memcapacitive, and meminductive systems to logic/computation and cross-bar memory. The emulators can be built from off-the-shelf components, with a total cost of a few tens of dollars, thus providing a relatively inexpensive platform for the implementation of these exercises in the classroom. We anticipate that this experiment-based learning can be easily adopted and expanded by the instructors with many more case studies.
description: IEEE Circuits and Systems Magazine (in press)
title: Минимальный размер оплаты труда как инструмент повышения пенсий
title: Minimum Wage as a Tool for Pensions Increase
Creators: name: Чистова, Елена Витальевна
Publisher: name: Издательский центр СурГУ
Year: 2019

description: В статье анализируется проблема низкого уровня оплаты труда, не позволяющего работнику обеспечить в течение своего трудоспособного периода достойный уровень пенсии. В качестве инструмента повышения пенсии рассматривается минимальный размер оплаты труда. Предложен подход к вычислению эффекта от регулирования минимального размера оплаты труда для повышения размера пенсий на основе балансового уравнения распределительной пенсионной системы.
description: The article analyzes the problem of low wages, which does not allow an employee to earn a decent level of pension during his/her working life. The study considers the minimum wage as a tool for pensions increase. An approach to calculate the effect of minimum wage regulation to increase the size of pensions based on the balance equation of the unfunded pension scheme is proposed.