921 research outputs found

    Defense of Superior Orders in International Criminal Law as Portrayed in Three Trials: Eichmann, Calley and England

    Get PDF
    The paper is dedicated to the defense of superior orders in international law. The author discusses attempts to use this defense in three trials, - Adolf Eichmann\u27s, William Calley\u27s and Lynndie England\u27s. The paper juxtaposes the trials and provides conclusions on the success of this defense in each case

    Protection of Endangered Species: Sturgeon: Struggle for Survival Has Become Critical

    Get PDF
    This research is dedicated to the current situation and problems of sturgeon species in Russia, mainly in the Caspian Sea region. In particular, the paper elaborates on the endangered beluga sturgeon. The work describes characteristic features of sturgeon, points out the current problems and proposes some suggestions on preservation efforts in order to improve the critical situation. The research carried out by the author includes a brief consumer survey which exhibits the level of awareness and indicates willingness of the society to maintain the stability and provide sustainable development of the sturgeon species. The author favors and encourages intrinsic value approach to biodiversity and environment, therefore building her analysis around this notion

    Protection of Endangered Species: Sturgeon: Struggle for Survival Has Become Critical

    Get PDF
    This research is dedicated to the current situation and problems of sturgeon species in Russia, mainly in the Caspian Sea region. In particular, the paper elaborates on the endangered beluga sturgeon. The work describes characteristic features of sturgeon, points out the current problems and proposes some suggestions on preservation efforts in order to improve the critical situation. The research carried out by the author includes a brief consumer survey which exhibits the level of awareness and indicates willingness of the society to maintain the stability and provide sustainable development of the sturgeon species. The author favors and encourages intrinsic value approach to biodiversity and environment, therefore building her analysis around this notion

    Racing the Tides: Three Virginia Islands Threatened by Climate Change and the Challenge of Preserving Their Stories

    Get PDF
    Among the tidal marshes of Virginia’s York River, there are three relatively obscure groups of uninhabited islands, all with fascinating stories, and all rapidly disappearing: the Goodwin Islands, the Catlett Islands, and Poropotank Island. These islands have been almost entirely overlooked by existing historical and archaeological research, and they are all imminently threatened by climate change-induced sea level rise and erosion. In the summer of 2023, I embarked on an interdisciplinary research project to study cultural heritage sites scattered across the islands. Drawing on my experience of studying these islands, as well as other related case studies, I demonstrate that due to their geographic isolation and intimate connection with surrounding waters, islands hold stories that are unique to their locations. Yet, this same isolation makes island cultural heritage sites particularly vulnerable to deterioration. By exploring the challenges posed by limited physical accessibility, insufficient funding, and systemic biases in determining historical significance, this study illuminates the urgent need for innovative preservation strategies. Photogrammetry has been proposed as a potential method of preserving threatened sites. However, I argue that while it can be a helpful tool for documentation and analysis, 3D scanning on its own cannot and should not be considered a wholly effective form of preservation

    String attractors and combinatorics on words

    Get PDF
    The notion of string attractor has recently been introduced in [Prezza, 2017] and studied in [Kempa and Prezza, 2018] to provide a unifying framework for known dictionary-based compressors. A string attractor for a word w = w[1]w[2] · · · w[n] is a subset Γ of the positions 1, . . ., n, such that all distinct factors of w have an occurrence crossing at least one of the elements of Γ. While finding the smallest string attractor for a word is a NP-complete problem, it has been proved in [Kempa and Prezza, 2018] that dictionary compressors can be interpreted as algorithms approximating the smallest string attractor for a given word. In this paper we explore the notion of string attractor from a combinatorial point of view, by focusing on several families of finite words. The results presented in the paper suggest that the notion of string attractor can be used to define new tools to investigate combinatorial properties of the words

    Defense of Superior Orders in International Criminal Law as Portrayed in Three Trials: Eichmann, Calley and England

    Get PDF
    The paper is dedicated to the defense of superior orders in international law. The author discusses attempts to use this defense in three trials, - Adolf Eichmann\u27s, William Calley\u27s and Lynndie England\u27s. The paper juxtaposes the trials and provides conclusions on the success of this defense in each case

    Combinatorics on words in information security: Unavoidable regularities in the construction of multicollision attacks on iterated hash functions

    Full text link
    Classically in combinatorics on words one studies unavoidable regularities that appear in sufficiently long strings of symbols over a fixed size alphabet. In this paper we take another viewpoint and focus on combinatorial properties of long words in which the number of occurrences of any symbol is restritced by a fixed constant. We then demonstrate the connection of these properties to constructing multicollision attacks on so called generalized iterated hash functions.Comment: In Proceedings WORDS 2011, arXiv:1108.341

    Management of patients with Graves' disease and orbital involvement: role of spectral domain optical coherence tomography

    Get PDF
    PURPOSE: To investigate the role of choroidal thickness evaluation with spectral domain optical coherence tomography (SDOCT) and enhanced depth imaging (EDI) technique in the management of patients with Graves' disease and orbitopathy (GO). METHODS: Thirty-six eyes of 18 patients with GO and 36 eyes of 18 age-matched control subjects were included in this retrospective observational study. All the subjects underwent a complete ophthalmological evaluation, including clinical activity score (CAS) and exophthalmometry. The SDOCT images of the choroid were obtained by EDI modality. RESULTS: Choroidal thickness was significantly increased in GO than in control eyes (p < 0.01). A significant correlation was found between choroidal thickness and CAS, proptosis, and the duration of disease (p < 0.05). CONCLUSION: This study shows that choroidal thickness, evaluated with EDI-OCT, is significantly increased in patients with GO and correlates with the activity of the disease, proptosis, and duration of the disease. The choroidal thickening may reflect the ocular hemodynamic changes, and enhanced depth imaging optical coherence tomography may be a useful tool for the evaluation of orbital congestion and management of patients with Graves' disease and orbital involvement

    Words and forbidden factors

    Get PDF
    AbstractGiven a finite or infinite word v, we consider the set M(v) of minimal forbidden factors of v. We show that the set M(v) is of fundamental importance in determining the structure of the word v. In the case of a finite word w we consider two parameters that are related to the size of M(w): the first counts the minimal forbidden factors of w and the second gives the length of the longest minimal forbidden factor of w. We derive sharp upper and lower bounds for both parameters. We prove also that the second parameter is related to the minimal period of the word w. We are further interested to the algorithmic point of view. Indeed, we design linear time algorithm for the following two problems: (i) given w, construct the set M(w) and, conversely, (ii) given M(w), reconstruct the word w. In the case of an infinite word x, we consider the following two functions: gx that counts, for each n, the allowed factors of x of length n and fx that counts, for each n, the minimal forbidden factors of x of length n. We address the following general problem: what information about the structure of x can be derived from the pair (gx,fx)? We prove that these two functions characterize, up to the automorphism exchanging the two letters, the language of factors of each single infinite Sturmian word

    Mild behavioral impairment in Parkinson's disease: Data from the Parkinson's disease cognitive impairment study (PACOS)

    Get PDF
    Neuropsychiatric symptoms (NPS) have been frequently described in Parkinson's disease (PD), even in the earliest stages of the disease. Recently the construct of mild behavioral impairment (MBI) has been proposed as an at-risk state for incident cognitive decline and dementia. The aim of the present study is to evaluate the prevalence and associated factors of MBI in PD. Cross-sectional data from 429 consecutive PD patients enrolled in the PArkinson's disease COgnitive impairment Study (PACOS) were included in the study. All subjects underwent neuropsychological assessment, according to the MDS Level II criteria. NPS were evaluated with the Neuropsychiatric Inventory. Multivariate logistic regression models were used to evaluate clinical and behavioral characteristics, which are associated with PD-MBI. The latter was ascertained in 361 (84.1%) subjects of whom 155 (36.1%) were newly diagnosed patients (disease duration ≥1 year) and 206 (48.0%) had a disease duration <1 year. Furthermore, 68 (15.9%) out of 429 subjects were PDw (without MBI). Across the MBI domains, Impulse Dyscontrol was significantly more prevalent among PD-MBI with disease duration <1 year than newly diagnosed patients. The frequency of Social Inappropriateness and Abnormal Perception significantly increased throughout the entire PD-MBI sample with increasing Hoehn andYahr (H&Y) stages. PD-MBI in newly diagnosed PDwas significantly associated with H&Y stage (OR 2.35, 95% CI 1.05-5.24) and marginally with antidepressant drug use (OR 2.94, 95% CI 0.91-9.47), while in patients with a disease duration >1 year was associated with UPDRS-ME (OR 3.37, 95% CI 1.41-8.00). The overall MBI frequency in the PACOS sample was 84% and 36% among newly diagnosed patients. The presence of MBI mainly related to motor impairment and disability
    corecore