attachment model
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Arena Hukum ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 432-454
Author(s):  
Gede Kharismawan ◽  
I Gede Wisanjaya

This research explains Brexit which leads to fisheries problems between United Kingdom (UK) and European Union (EU), regarding mechanism of methodology in distributing allocation of fishing quotas. This normative research uses statute, case, and comparative approach. The results shows that the problem between United Kingdom and European Union lies in the methodology of determining the amount of fishing quota through legal instruments established by the parties European Union wants to use relative stability model, whereas United Kingdom wants to use zonal attachment model Furthermore, the proposed form of solution that can be used in an effort to solve the fisheries problem between the United Kingdom and the European Union are thorugh one or more variation of zonal attachment, historical attachment, relative stability, or other mechanism (Hannesson Model).


2021 ◽  
Author(s):  
Kartik Kamat ◽  
Pavithra M. Naullage ◽  
Valeria Molinero ◽  
Baron Peters

2021 ◽  
Vol 58 (4) ◽  
pp. 890-908
Author(s):  
Caio Alves ◽  
Rodrigo Ribeiro ◽  
Rémy Sanchis

AbstractWe prove concentration inequality results for geometric graph properties of an instance of the Cooper–Frieze [5] preferential attachment model with edge-steps. More precisely, we investigate a random graph model that at each time $t\in \mathbb{N}$ , with probability p adds a new vertex to the graph (a vertex-step occurs) or with probability $1-p$ an edge connecting two existent vertices is added (an edge-step occurs). We prove concentration results for the global clustering coefficient as well as the clique number. More formally, we prove that the global clustering, with high probability, decays as $t^{-\gamma(p)}$ for a positive function $\gamma$ of p, whereas the clique number of these graphs is, up to subpolynomially small factors, of order $t^{(1-p)/(2-p)}$ .


Author(s):  
Gang Feng ◽  
Gang Feng ◽  
Nan Xu ◽  
Zuling Li ◽  
Zuling Li ◽  
...  

We studied Zeta potentials of nanoparticles titanium dioxides (nTiO2) in different concentration of NaNO3 and phosphate (P) solutions. In addition, the effect of flow rate on the transport of nTiO2 in P was investigated at pH=6.5. Experimental results show that the Zeta potential of nTiO2 is compressed with the increasing ion concentration (IC) of NaNO3 at pH=6.5. The negative charge increases with the augment of P. Therefore, the high P and low NaNO3 induce the stabilization of nTiO2 aggregates. The transport experiments suggest that the rapid flow rate is favorable for the transportability of nTiO2 and soluble phosphate. The breakthrough transport curves (BTCs) of nTiO2 in sand columns can be fitted well with two-site kinetic attachment model. The modeling results suggest that the values of first-order attachment rate coefficients (k2) and detachment rate coefficients (k2d) on site 2 and first-order attachment rate coefficients (k1) on site 1 are responsible to the attaching efficiency of nTiO2 on sands and their transportability.


2021 ◽  
Vol 17 (4) ◽  
pp. 1-26
Author(s):  
Guy Even ◽  
Reut Levi ◽  
Moti Medina ◽  
Adi Rosén

We consider the problem of sampling from a distribution on graphs, specifically when the distribution is defined by an evolving graph model, and consider the time, space, and randomness complexities of such samplers. In the standard approach, the whole graph is chosen randomly according to the randomized evolving process, stored in full, and then queries on the sampled graph are answered by simply accessing the stored graph. This may require prohibitive amounts of time, space, and random bits, especially when only a small number of queries are actually issued. Instead, we propose a setting where one generates parts of the sampled graph on-the-fly, in response to queries, and therefore requires amounts of time, space, and random bits that are a function of the actual number of queries. Yet, the responses to the queries correspond to a graph sampled from the distribution in question. Within this framework, we focus on two random graph models: the Barabási-Albert Preferential Attachment model (BA-graphs) ( Science , 286 (5439):509–512) (for the special case of out-degree 1) and the random recursive tree model ( Theory of Probability and Mathematical Statistics , (51):1–28). We give on-the-fly generation algorithms for both models. With probability 1-1/poly( n ), each and every query is answered in polylog( n ) time, and the increase in space and the number of random bits consumed by any single query are both polylog( n ), where n denotes the number of vertices in the graph. Our work thus proposes a new approach for the access to huge graphs sampled from a given distribution, and our results show that, although the BA random graph model is defined by a sequential process, efficient random access to the graph’s nodes is possible. In addition to the conceptual contribution, efficient on-the-fly generation of random graphs can serve as a tool for the efficient simulation of sublinear algorithms over large BA-graphs, and the efficient estimation of their on such graphs.


2021 ◽  
Author(s):  
Brett Lewis ◽  
David Suggett ◽  
Peter Prentis ◽  
Luke Nothdurft

Abstract Reef-building coral colonies propagate by periodic sexual reproduction and continuous asexual fragmentation. The latter depends on successful attachment to the reef substrate through modification of soft tissues and skeletal growth. Despite decades of research examining coral sexual and asexual propagation, the contact response, tissue motion, and cellular reorganisation responsible for attaching to the substrate via a newly formed skeleton have not been documented. Here, we correlated fluorescence and electron microscopy image data with ‘live’ microscopic time-lapse of the coral tissue biomechanics and developed a multiscale imaging approach to establish the first “coral attachment model” (CAM) - identifying three distinct phases that determine the timing and success of attachment during asexual propagation: (i) an initial immune response, followed by (ii) fragment stabilisation through anchoring by the soft tissue and (iii) formation of a “lappet appendage” structure leading to substrate bonding of the tissue for encrustation through the onset of skeletal calcification. In developing CAM, we provide new frameworks and metrics that enable reef researchers, managers and coral restoration practitioners to evaluate attachment effectiveness needed to optimise species-substrate compatibility.


2021 ◽  
Vol 9 ◽  
Author(s):  
Jerrold Soh Tsin Howe

We propose and evaluate generative models for case law citation networks that account for legal authority, subject relevance, and time decay. Since Common Law systems rely heavily on citations to precedent, case law citation networks present a special type of citation graph which existing models do not adequately reproduce. We describe a general framework for simulating node and edge generation processes in such networks, including a procedure for simulating case subjects, and experiment with four methods of modelling subject relevance: using subject similarity as linear features, as fitness coefficients, constraining the citable graph by subject, and computing subject-sensitive PageRank scores. Model properties are studied by simulation and compared against existing baselines. Promising approaches are then benchmarked against empirical networks from the United States and Singapore Supreme Courts. Our models better approximate the structural properties of both benchmarks, particularly in terms of subject structure. We show that differences in the approach for modelling subject relevance, as well as for normalizing attachment probabilities, produce significantly different network structures. Overall, using subject similarities as fitness coefficients in a sum-normalized attachment model provides the best approximation to both benchmarks. Our results shed light on the mechanics of legal citations as well as the community structure of case law citation networks. Researchers may use our models to simulate case law networks for other inquiries in legal network science.


2021 ◽  
Vol 184 (1) ◽  
Author(s):  
Arne Grauer ◽  
Lukas Lüchtrath ◽  
Mark Yarrow

AbstractWe consider the preferential attachment model with location-based choice introduced by Haslegrave et al. (Random Struct Algorithms 56(3):775–795, 2020) as a model in which condensation phenomena can occur. In this model, each vertex carries an independent and uniformly distributed location. Starting from an initial tree, the model evolves in discrete time. At every time step, a new vertex is added to the tree by selecting r candidate vertices from the graph with replacement according to a sampling probability proportional to these vertices’ degrees. The new vertex then connects to one of the candidates according to a given probability associated to the ranking of their locations. In this paper, we introduce a function that describes the phase transition when condensation can occur. Considering the noncondensation phase, we use stochastic approximation methods to investigate bounds for the (asymptotic) proportion of vertices inside a given interval of a given maximum degree. We use these bounds to observe a power law for the asymptotic degree distribution described by the aforementioned function. Hence, this function fully characterises the properties we are interested in. The power law exponent takes the critical value one at the phase transition between the condensation–noncondensation phase.


Author(s):  
Nadezhda Shpilnaya

The purpose of the article is to analyse pragmatic variants of a dialogical text as a language unit. It is assumed that the pragmatic context of the dialogical text (dialogue) actualizing is associated with either informative or phatic intentions. Informative and phatic dialogues appear as pragmatic allotext of a dialogical text. The research methodology is based on the synthesis of derivational and anthropocentric language theories. The process of creating a dialogical text is considered, on the one hand, as a derivational process due to the suppositional relationship between the lexeme and the text, and on the other hand, as a process of interpreting the text in the pragmatic context of its actualization. The material for the study was the recording of oral and written speech of regular native speakers in an informal communication situation. The total number of analyzed speech patterns was 140 dialogic texts – 70 texts of each communication type. It is stated that the pragmatic actualization of the dialogical text is associated with the realization of paradigmatic and syntagmatic connections of lexemes. It is revealed that the syntagmatic model of a dialogical text genesis in informative communication is an adjoining model. A paradigmatic model of dialogic text genesis in informative communication is synonymy. In phatic communication, an attachment model was identified as a syntagmatic model of the genesis of a dialogical text. The paradigmatic model for the production of dialogic text in phatic communication is a homonym model.


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