cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Isolation and structural characterisation of acid- and pepsin-soluble collagen from the skin of squid Sepioteuthis lessoniana (Lesson, 1830)
Creators: name: Pasiyappazham Ramasamy
name: Namasivayam Subhapradha
name: Vairamani Shanmugam
name: Annaian Shanmugam
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorized

description: Acid-solubilised collagen (ASC) and pepsin-solubilised collagen (PSC) were effectively isolated from squid skin with good yield and total protein content. ASC and PSC consist of two α-chains with an imino acid content of 182.6 and 184 imino acid residues/1000 residues. The molecular weight was determined to be between 73 and 107 kDa by using SDS-PAGE. For peptide mapping, collagens were digested with achromo endopeptidase, and all components, including α, β-chains, were markedly hydrolysed. Degradation peptides with molecular weights between 106.9 and 15.47 kDa were obtained. UV–vis absorption spectrum revealed distinct absorption at 220–240 nm. FT-IR spectra of collagens were almost similar when compared with standard. In differential scanning calorimetry profile, ASC and PSC exhibited a To of 59.10, 62.18°C and TP of 104.91, 98.10 °C, respectively. This investigation indicates that the collagen isolated from the squid skin, which is thrown as waste in the seafood-processing plant, might supplement the vertebrate collagen in industrial applications.
Synthesis of New Aza Thia Crowns Bearing 2,2′-Diaminodiphenyl Disulfide
Creators: name: Esmael Rostami
name: Masume Zangooei
name: Marziyh Ghaedi
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorised

description: New aza thia crowns were prepared from the reaction of 2,2′-diaminodiphenyl disulfide and diacids or diacid chlorides. Diacids are malonic acid, adipic acid, sebacic acid, and 2,2′-thiodiacetic acid and diacid dichlorides are malonyl chloride, adipoyl chloride, sebacoyl chloride, and 2,2′-thiodiacetyl chloride. [Supplementary materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfer, and Silicon and the Related Elements for the following free supplemental files: Additional figures.]
Performance Evaluation of 6-Sector Site and Small Cell for Addis Ababa UMTS Deployment Scenario
Creators: name: Tirufire, Aberra
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The demand for high data rate has been increasing due to various innovative data services that improve human life. To accommodate the increasing demand with satisfactory Quality of Service (QoS), operators must continuously improve their network capacity. To that end, besides deploying a Fourth-Generation (4G) network, already operational Third-Generation (3G) network capacity can be improved by applying various capacity improving techniques including six sectorization, adding small cells, macro site densification, Multiple Input Multiple Output (MIMO) and using multiple carrier. In this thesis, capacity challenges of Addis Ababa Universal Mobile Telecommunications System (UMTS) network are analyzed using real data from network management system. Further, performance evaluation and comparison of six-sector sites, small cell deployment and their hybrid deployments are presented in the context of addressing the capacity challenges. The evaluation is performed using carrier to interference plus noise ratio (CINR) and throughput metrics and WinProp based propagation computation and network simulation by applying dominant path pathloss model over building map of selected deployment area of Addis Ababa. Results show that full deployment of six-sector has performance improvement compared to full 3-sector with 2.9 dB CINR and 284.23% DL throughput gains. In addition, 6-sector with 3-sector (hybrid) has 2.2 dB and 231.05% gain in CINR and DL throughput compared to full 3-sector deployment respectively. Furthermore, femto with 5% penetration has 0.3 dB CINR gain over full 3-sector. Based on the results, deployment of 6 sector site (both full and hybrid) can enhance capacity of UMTS network significantly and can elevate the capacity challenges faced. Furthermore, femto also has improved the capacity and with an increase in penetration ratio, the gain can be further increased.
Methodology for Testing and Evaluation of Safety Analytics Approaches
Creators: name: Paiva, Antonio R.
name: Tewari, Ashutosh
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: There has been a significant increase in the development of data-driven safety analytics approaches in recent years. In light of these advances it has become imperative to evaluate such approaches in a principled way to determine their merits and limitations. To that end, we propose an evaluation methodology underpinned by a simulated environment that allows for a comprehensive assessment of safety analytics approaches. While assessing those approaches with historical field data is undoubtedly important, such an assessment has limited statistical power because it corresponds to only one realization. The proposed methodology enables validation over a large number of realizations, thereby circumventing the statistical limitations of evaluation on historical data. Moreover, by using a simulated environment one is able to clearly distinguish between the variability in the observed data and differences in performance between safety approaches. A simulated environment does this by comparing the approaches under controlled circumstances, resulting in a fair and systematic evaluation of the potential long-term benefits. We demonstrate the utility of the proposed methodology via a case study that compares a few candidate safety analytics approaches. These approaches differ in how they assimilate field safety data to assess safety risk and suggest mitigative actions. We show that the proposed methodology indeed reveals useful insights and quantifies the relative merits and drawbacks of the different approaches, which would be otherwise difficult to objectively determine in a real-world scenario.
description: Accepted to Safety Science
Dossier statistico immigrazione 2023 (a cura di) Centro Studi e Ricerche IDOS e Centro Studi Confronti Istituto di Studi Politici “S. Pio V”
Creators: name: Amato, Fabio
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2024

description: Secondo una sempre più diffusa letteratura scientifica, la presenza straniera in Italia è rintracciabile già nel secondo dopoguerra, con gli scambi di popolazioni esito del conflitto mondiale (comunità ebraiche, persone di rientro dall’Istria e dalla Dalmazia) e con i timidi retaggi del colonialismo nazionale (comunità eritree e somale). Pur volendo assecondare la narrazione più diffusa che ci vede “anche” paese di immigrazione solo a partire dal 1973 – quando il bilancio migratorio vede per la prima volta gli immigrati superare gli emigrati – siamo in presenza di un processo che ormai ha 50 anni. Un respiro temporale che non giustifica più le esitazioni, i malintesi e gli eccezionalismi con cui ancora si racconta la presenza straniera in Italia, sempre dietro il vessillo dell’emergenzialità.
description: Semestrale di studi e ricerche di geografia, N. 1 (2024)
Neural Network based 3G Mobile Sites Fault Prediction: A Case Study in Addis Ababa, Ethiopia
Creators: name: Asmelash, Tesfay
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: As cellular mobile networks are evolving in technology and service type, the number of mobile network site infrastructure is increasing. Nowadays, faulty cellular mobile network sites per day in ethio telecom are significant in number and have big impact to customers and operator in QoS, revenue and maintenance cost. Fault maintenance techniques commonly applied by ethio telecom is corrective maintenance approach. This only helps to recover services after interruption. However, it is important to implement the proactive maintenance approach to make mobile sites reliable and available. This helps to provide services according to standards and improve the quality of service delivery to customers. To mitigate mobile network site faults before happening, fault occurrence time prediction is an important technique for the implementation of proactive maintenance strategy. This Neural Network based 3G Mobile Fault Occurrence Prediction research work is conducted based on the Nonlinear Auto regressive (NAR) Neural Network time series prediction method using Addis Ababa 3G mobile sites in a case study. To train the neural network 15,950 actual fault occurrence time data are used. The algorithm used to train the neural network is Levenberg-Marquardt which is fast and efficient, and an iterative approach of hidden layer neuron number selection is applied. Finally, the best model is selected with minimum value of mean square error of prediction. Also, the model is tested with actual fault occurrence time which was not used in the training and achieved 90.71% in prediction. Therefore, it is efficient in prediction accuracy, fast and adaptive with future data.
Synthesis, Crystal Structure, and Characterization of A New Adduct Bis-(2-Amino-3-Benzyloxypyridinium) Selenate Monohydrate [C12H13N2O]2SeO4.H2O
Creators: name: Soukrata, Sami
name: Belhouchet, Mohamed
name: Joen Josep Suñol
name: Mhiri, Tahar
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorised

description: A new adduct bis-(2-amino-3-benzyloxypyridinium) selenate monohydrate, [C12H13N2O]2SeO4.H2O, has been synthesized by slow evaporation at room temperature using 2-amino-3-benzyloxypyridine as the structure-directing agent. The structure, determined by single-crystal X-ray diffraction at 298 K, can be described as organic-inorganic tunnels with different forms built by infinite inorganic chains parallel to the c axis and connected to the organic cations. In this atomic arrangement, hydrogen bonds and van der Waals interactions between the different species play an important role in the tri-dimensional network cohesion. Solid-state 13C and 77Se MAS NMR spectroscopy results are in agreement with the X-ray structure. [Supplementary materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfer, and Silicon and the Related Elements for the following free supplemental files: Additional figures and tables.]
Synthesis, Characterization, Thermal, and Antibacterial Studies of Organotin(Iv) Complexes of Indole-3-Butyric Acid and Indole-3-Propionic Acid
Creators: name: Chilwal, Asha
name: Malhotra, Priti
name: A. K. Narula
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorised

description: Six organotin(IV) complexes of type Me2SnL2, Bu2SnL2, and Ph3SnL [where L = indole-3-butyric acid (1, 2 and 3) or indole-3-propionic acid (4, 5 and 6)] have been synthesized by the reactions of the corresponding diorganotin(IV) oxide and triphenyltin(IV) hydroxide with respective indole-3-butyric acid (IBH) or indole-3-propionic acid (IPH) in the desired molar ratios of 1:2/1:1. All of the compounds have been characterized by elemental analysis, IR, 1H NMR, 13C NMR, and 119Sn NMR spectroscopy. Thermal studies of all synthesized complexes have been carried out using thermogravimetry (TG) technique under a nitrogen atmosphere. The thermal decompositions for compounds Me2SnL2 and Bu2SnL2 occurred in two steps, whereas in compounds Ph3SnL, it exhibited as three steps decomposition and resulted into the formation of pure SnO2. The complexes were also screened against three gram-positive (Staphylococcus aureus, Staphylococcus epidermidis, and Micrococcus luteus) and three gram-negative (Escherichia coli, Pseudomonas aeruginosa, and Enterobacter aerogenes) bacteria using minimum inhibition concentration (MIC) method, and all of these complexes showed significant antibacterial activity. [Supplementary materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements for the following free supplemental files: Additional text, tables, and figures.]
Supplementary feeding of the reintroduced Red Kite Milvus milvus in UK gardens
Creators: name: Orros, Melanie
name: Fellowes, Mark D. E.
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorised

description: Capsule The provision of meat for garden birds is unusual in the UK but a reintroduced raptor, the Red Kite Milvus milvus, is now regularly fed in some areas. A questionnaire of garden kite feeders revealed that people were most often motivated to feed by a desire to see kites close up and that most provisioning falls within available guidelines. We estimated the median amount of food thought to be taken by kites per kite-feeding garden per day as 21 g, sufficient to support 0.12–0.26 individuals.
Milliarcsecond astrometry for the Galilean moons using stellar occultations
Creators: name: Morgado, B. E.
name: Gomes-Júnior, A. R.
name: Braga-Ribas, F.
name: Vieira-Martins, R.
name: Desmars, J.
name: Lainey, V.
name: D'aversa, E.
name: Dunham, D.
name: Moore, J.
name: Baillié, K.
name: Herald, D.
name: Assafin, M.
name: Sicardy, B.
name: Aoki, S.
name: Bardecker, J.
name: Barton, J.
name: Blank, T.
name: Bruns, D.
name: Carlson, N.
name: Carlson, R. W.
name: Cobble, K.
name: Dunham, J.
name: Eisfeldt, D.
name: Emilio, M.
name: Jacques, C.
name: Hinse, T. C.
name: Kim, Y.
name: Malacarne, M.
name: Maley, P. D.
name: Maury, A.
name: Meza, E.
name: Oliva, F.
name: Orton, G. S.
name: Pereira, C. L.
name: Person, M.
name: Plainaki, C.
name: Sfair, R.
name: Sindoni, G.
name: Smith, M.
name: Sussenbach, E.
name: Stuart, P.
name: Vrolijk, J.
name: Winter, O. C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A stellar occultation occurs when a Solar System object passes in front of a star for an observer. This technique allows the determination of sizes and shapes of the occulting body with kilometer precision. Also, this technique constrains the occulting body's positions, albedos, densities, etc. In the context of the Galilean moons, these events can provide their best ground-based astrometry, with uncertainties in the order of 1 mas ($\sim$ 3 km at Jupiter's distance during opposition). We organized campaigns and successfully observed a stellar occultation by Io (JI) in 2021, one by Ganymede (JIII) in 2020, and one by Europa (JII) in 2019, with stations in North and South America. Also, we re-analyzed two previously published events, one by Europa in 2016 and another by Ganymede in 2017. Then, we fit the known 3D shape of the occulting satellite and determine its center of figure. That resulted in astrometric positions with uncertainties in the milliarcsecond level. The positions obtained from these stellar occultations can be used together with dynamical models to ensure highly accurate orbits of the Galilean moons. These orbits can help plan future space probes aiming at the Jovian system, such as JUICE by ESA and Europa Clipper by NASA, and allow more efficient planning of flyby maneuvers.
description: 19 pages, 25 figures, Accepted on March 14, 2022 for publication in The Astronomical Journal
Synthesis, Characterization, Thermal, and Antibacterial Studies of Organotin(Iv) Complexes of Indole-3-Butyric Acid and Indole-3-Propionic Acid
Creators: name: Chilwal, Asha
name: Malhotra, Priti
name: A. K. Narula
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorised

description: Six organotin(IV) complexes of type Me2SnL2, Bu2SnL2, and Ph3SnL [where L = indole–3– butyric acid (1, 2 and 3) or indole–3–propionic acid (4, 5 and 6)] have been synthesized by the reactions of the corresponding diorganotin(IV) oxide and triphenyltin(IV) hydroxide with respective indole–3–butyric acid (IBH) or indole–3–propionic acid (IPH) in the desired molar ratios of 1:2/1:1. All of the compounds have been characterized by elemental analysis, IR, 1H NMR, 13C NMR, and 119Sn NMR spectroscopy. Thermal studies of all synthesized complexes have been carried out using thermogravimetry (TG) technique under a nitrogen atmosphere. The thermal decompositions for compounds Me2SnL2 and Bu2SnL2 occurred in two steps, whereas in compounds Ph3SnL, it exhibited as three steps decomposition and resulted into the formation of pure SnO2. The complexes were also screened against three gram–positive (Staphylococcus aureus, Staphylococcus epidermidis, and Micrococcus luteus) and three gram–negative (Escherichia coli, Pseudomonas aeruginosa, and Enterobacter aerogenes) bacteria using minimum inhibition concentration (MIC) method, and all of these complexes showed significant antibacterial activity. [Supplementary materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements for the following free supplemental files: Additional text, tables, and figures.]
Geopolitica umana. Capire il mondo dalle civiltà antiche alle potenze odierne di Dario Fabbri
Creators: name: Boria, Edoardo
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2024

description: Una rubrica di recensioni in una rivista accademica dovrebbe documentare relativamente a testi scritti da studiosi di professione o almeno improntati a rigore scientifico. Quello di cui si parla qui sotto non presenta queste caratteristiche. Perché, dunque, recensirlo? Potrei cavarmela attribuendo la scelta alla redazione che mi ha gentilmente contattato, ma in fondo io ho accettato e dunque sono almeno compartecipe nella decisione. Anzi, dovrei assumermi la quota maggiore di responsabilità perché la redazione poteva non essere al corrente del taglio del volume mentre io non posso negare che lo conoscevo bene. Iniziamo, dunque, con il giustificare la presenza di questa stessa recensione in una rivista scientifica, addirittura di fascia A. Se non è scientifico il linguaggio, se non è scientifico lo schema di ragionamento, se non si parte da un ben identificato interrogativo di ricerca e non si propone, nonostante venga annunciato, un metodo di analisi, perché sta qui? Per gli stessi motivi per cui spesso assistiamo dentro aule universitarie a convegni che presentano le medesime carenze: perché il mondo accademico deve sforzarsi di dialogare costantemente con altri ambiti della società, anche accogliendo metodi di lavoro lontani dalle sue prassi tradizionali, adottando registri linguistici non specialistici, incrociando professionalità non accademiche. Questi contatti, perfino nella forma più spinta di contaminazioni e ibridazioni, fanno bene a tutti, scienza inclusa.
description: Semestrale di studi e ricerche di geografia, N. 1 (2024)
Forensic Analysis and Localization of Multiply Compressed MP3 Audio Using Transformers
Creators: name: Xiang, Ziyue
name: Bestagini, Paolo
name: Tubaro, Stefano
name: Delp, Edward J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Sound (cs.SD)
subject: Multimedia (cs.MM)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Audio signals are often stored and transmitted in compressed formats. Among the many available audio compression schemes, MPEG-1 Audio Layer III (MP3) is very popular and widely used. Since MP3 is lossy it leaves characteristic traces in the compressed audio which can be used forensically to expose the past history of an audio file. In this paper, we consider the scenario of audio signal manipulation done by temporal splicing of compressed and uncompressed audio signals. We propose a method to find the temporal location of the splices based on transformer networks. Our method identifies which temporal portions of a audio signal have undergone single or multiple compression at the temporal frame level, which is the smallest temporal unit of MP3 compression. We tested our method on a dataset of 486,743 MP3 audio clips. Our method achieved higher performance and demonstrated robustness with respect to different MP3 data when compared with existing methods.
title: 02_1038
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Near-Real Time SIM-box Fraud Detection Using Machine Learning in the case of ethio telecom
Creators: name: Fitsum, Tesfaye
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2020

description: The advancement of telecommunication era is rapidly growing, however, telecom fraudsters encouraged by the emerging of these new technologies. Interconnect bypass fraud is one of the most sever threats to telecom operators. Subscriber Identity Module Box (SIM-box) fraud is one of an interconnect bypass telecom fraud type and uses Voice over IP (VoIP) technology. In addition, it's difficult to detect such fraud types with Test Call Generation (TCG) and a traditional types of Fraud Management System (FMS). Both TCG and FMS easily bypassed by the fraudsters, telecom companies impacted by losing billions of dollars. In this study, Sliding Window (SW) aggregation mode is applied to provide a relevant dataset instance and reduce detection delay to one hour by using supervised Machine Learning (ML) algorithm. Three supervised ML classifier algorithms were used, namely Random Forest (RF), Artificial Neural Network (ANN), and Support Vector Machine (SVM) with the two validation techniques 10 -fold cross-validation and supplied test. Call Detail Record (CDR) data were collected, relevant attributes were selected and preprocessing such as data cleaning, integrating and aggregating tasks were performed. The experimental results depict that RF classifier using cross-validation on SW aggregation mode achieves a better classification accuracy (96 .2 %). ANN is placed on second with its overall performance accuracy and its detection delay, SVM algorithm using cross-validation exceeds the desired detection delay (49 ,965 second) with poor performance accuracy. RF classifier algorithm using SW aggregation mode overcomes the trade-off detection accuracy and detection delay.
Enhanced thebaine production in Papaver bracteatum cell suspension culture by combination of elicitation and precursor feeding
Creators: name: Zare, Nasser
name: Farjaminezhad, Reza
name: Rasool Asghari-Zakaria
name: Farjaminezhad, Manoochehr
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorized

description: In this study, the effect of methyl jasmonate (MJ) and ultrasound (US), individually and in combination with L-tyrosine, on the stimulation of thebaine production in Papaver bracteatum cell suspension cultures was studied. The addition of L-tyrosine did not significantly affect the cell biomass, but significantly increased the thebaine yield of cells compared with the control. The synergistic effects of MJ and L-tyrosine in the combined treatment of 100 μM MJ and 2 mM L-tyrosine increased the thebaine yield of cells up to 84.62 mg L− 1 at 6 days after treatment. Sonication of the cells for 20 s caused a significant decrease in cell growth and biomass, whereas the thebaine yield increased up to 39.60 mg L− 1 at 6 days after treatment. The combination of US (10 s) and L-tyrosine feeding (2 mM) significantly increased the production of thebaine in comparison to individual utilisation of 2 mM L-tyrosine and US (10 s).
Implicit Feedback for Dense Passage Retrieval: A Counterfactual Approach
Creators: name: Zhuang, Shengyao
name: Li, Hang
name: Zuccon, Guido
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: In this paper we study how to effectively exploit implicit feedback in Dense Retrievers (DRs). We consider the specific case in which click data from a historic click log is available as implicit feedback. We then exploit such historic implicit interactions to improve the effectiveness of a DR. A key challenge that we study is the effect that biases in the click signal, such as position bias, have on the DRs. To overcome the problems associated with the presence of such bias, we propose the Counterfactual Rocchio (CoRocchio) algorithm for exploiting implicit feedback in Dense Retrievers. We demonstrate both theoretically and empirically that dense query representations learnt with CoRocchio are unbiased with respect to position bias and lead to higher retrieval effectiveness. We make available the implementations of the proposed methods and the experimental framework, along with all results at https://github.com/ielab/Counterfactual-DR.
description: Full paper, accepted at SGIR2022
SIM-Box Fraud Detection Using Data Mining Techniques: The Case of ethio telecom
Creators: name: Kahsu, Hagos
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Telecommunication fraud is one of the threat of telecom operators as it drives telecom operators to loose a portion of their annual revenue. Bypass fraud is most worrying fraud type in today's telecom business. The advent of new technologies provided fraudsters new techniques to device bypass fraud. Subscriber Identity Module box (SIM box) fraud is the popular type of bypass fraud, that has emerged with the use of Voice Over Internet Protocol (VoIP) technologies. SIM box is used to terminate international calls by diverting away from the legitimate interconnect gateway route. SIM box fraud is more common in the operators where their tari of international call termination is much higher than the local call tari . This high tari is a common method of subsidizing telecom infrastructure in the developing world. However, it creates strong motivation for fraudsters. Among various fraud prevention approaches, the use of monitoring call patterns and pro les through Fraud Management Systems and Test Call Generators are common one. Yet, both approaches have drawbacks which make them insu cient because they are easily overcome by fraudsters. Therefore, the need for more sophisticated techniques is inevitable. In recent years, datamining techniques have gained popularity in fraud detection. In this research, models were developed to classify Call Detail Records (CDRs) to propose a model that di erentiate fraudulent from legitimate subscribers with better performance. Three classi cation techniques, Random Forest (RF), Arti cial Neural Network (ANN) and Support Vector Machine (SVM), and three user pro ling datasets, 4 hour, daily and monthly aggregated were proposed. These three algorithms along with the three datasets were applied in building the models. Results of the work show that RF performed better among the three algorithms with accuracy of 95.99% and a lesser false-positive on the 4 hour aggregated dataset.
Ranking with submodular functions on a budget
Creators: name: Zhang, Guangyi
name: Tatti, Nikolaj
name: Gionis, Aristides
Publisher: name: arXiv
Year: 2022
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Submodular maximization has been the backbone of many important machine-learning problems, and has applications to viral marketing, diversification, sensor placement, and more. However, the study of maximizing submodular functions has mainly been restricted in the context of selecting a set of items. On the other hand, many real-world applications require a solution that is a ranking over a set of items. The problem of ranking in the context of submodular function maximization has been considered before, but to a much lesser extent than item-selection formulations. In this paper, we explore a novel formulation for ranking items with submodular valuations and budget constraints. We refer to this problem as max-submodular ranking (MSR). In more detail, given a set of items and a set of non-decreasing submodular functions, where each function is associated with a budget, we aim to find a ranking of the set of items that maximizes the sum of values achieved by all functions under the budget constraints. For the MSR problem with cardinality- and knapsack-type budget constraints we propose practical algorithms with approximation guarantees. In addition, we perform an empirical evaluation, which demonstrates the superior performance of the proposed algorithms against strong baselines.
MPEC 2024-V39 : 2024 VH
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 VH

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Towards Generalizable Semantic Product Search by Text Similarity Pre-training on Search Click Logs
Creators: name: Liu, Zheng
name: Zhang, Wei
name: Chen, Yan
name: Sun, Weiyi
name: Du, Tianchuan
name: Schroeder, Benjamin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: F.2.2; I.2.7

description: Recently, semantic search has been successfully applied to e-commerce product search and the learned semantic space(s) for query and product encoding are expected to generalize to unseen queries or products. Yet, whether generalization can conveniently emerge has not been thoroughly studied in the domain thus far. In this paper, we examine several general-domain and domain-specific pre-trained Roberta variants and discover that general-domain fine-tuning does not help generalization, which aligns with the discovery of prior art. Proper domain-specific fine-tuning with clickstream data can lead to better model generalization, based on a bucketed analysis of a publicly available manual annotated query-product pair da
description: 9 pages. ACL 2022 ECNLP Workshop
Green Belt e altre espressioni di verde urbano. Usi, tutela, mobilità di Donata Castagnoli
Creators: name: Burini, Federica
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2024

description: Il volume di Donata Castagnoli è una nuova edizione, a distanza di quattro anni dalla precedente, che offre una versione aggiornata nei dati e nei temi del ruolo del verde urbano e periurbano nel ridefinire le relazioni e i possibili ribilanciamenti tra sistemi ambientali o aree protette, tradizionalmente concepiti come aree isolate, e il resto del territorio con cui tessere relazioni funzionali, di accessibilità o di servizio. Si tratta di un mutamento concettuale degli usi, forme di tutela e di accessibilità nei confronti del territorio da tutelare, per garantirne una unitarietà gestionale.
description: Semestrale di studi e ricerche di geografia, N. 1 (2024)
A High-Quality Entropy Source Using van der Waals Heterojunction for True Random Number Generation
Creators: name: Abraham, Nithin
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Majumdar, Kausik
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Generators of random sequences used in high-end applications such as cryptography rely on entropy sources for their indeterminism. Physical processes governed by the laws of quantum mechanics are excellent sources of entropy available in nature. However, extracting enough entropy from such systems for generating truly random sequences is challenging while maintaining the feasibility of the extraction procedure for real-world applications. Here, we present a compact and an all-electronic van der Waals (vdW) heterostructure-based device capable of detecting discrete charge fluctuations for extracting entropy from physical processes and use it for the generation of independent and identically distributed (IID) true random sequences. We extract a record high value ($>0.98~bits/bit$) of min-entropy using the proposed scheme. We demonstrate an entropy generation rate tunable over multiple orders of magnitude and show the persistence of the underlying physical process for temperatures ranging from cryogenic to ambient conditions. We verify the random nature of the generated sequences using tests such as NIST SP 800-90B standard and other statistical measures and verify the suitability our random sequence for cryptographic applications using the NIST SP 800-22 standard. The generated random sequences are then used in implementing various randomized algorithms without any preconditioning steps.
Genetic diversity of functional food species Spinacia oleracea L. by protein markers
Creators: name: M. Rashid
name: Z. Yousaf
name: M.S. Haider
name: S. Khalid
name: H.A. Rehman
name: A. Younas
name: A. Arif
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorized

description: Exploration of genetic diversity contributes primarily towards crop improvement. Spinaciaoleracea L. is a functional food species but unfortunately the genetic diversity of this vegetable is still unexplored. Therefore, this research was planned to explore the genetic diversity of S. oleracea by using morphological and protein markers. Protein profile of 25 accessions was generated on sodium dodecyl sulphate polyacrylamide gel. Total allelic variation of 27 bands was found. Out of these, 20 were polymorphic and the rest of the bands were monomorphic. Molecular weights of the bands ranged from 12.6 to 91.2 kDa. Major genetic differences were observed in accession 20541 (Peshawar) followed by 20180 (Lahore) and 19902 (AVRDC). Significant differences exist in the protein banding pattern. This variation can further be studied by advanced molecular techniques, including two-dimensional electrophoresis and DNA markers.
Isolation and structural characterisation of acid- and pepsin-soluble collagen from the skin of squid Sepioteuthis lessoniana (Lesson, 1830)
Creators: name: Pasiyappazham Ramasamy
name: Namasivayam Subhapradha
name: Vairamani Shanmugam
name: Annaian Shanmugam
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorised

description: Acid-solubilised collagen (ASC) and pepsin-solubilised collagen (PSC) were effectively isolated from squid skin with good yield and total protein content. ASC and PSC consist of two α-chains with an imino acid content of 182.6 and 184 imino acid residues/1000 residues. The molecular weight was determined to be between 73 and 107 kDa by using SDS-PAGE. For peptide mapping, collagens were digested with achromo endopeptidase, and all components, including α, β-chains, were markedly hydrolysed. Degradation peptides with molecular weights between 106.9 and 15.47 kDa were obtained. UV–vis absorption spectrum revealed distinct absorption at 220–240 nm. FT-IR spectra of collagens were almost similar when compared with standard. In differential scanning calorimetry profile, ASC and PSC exhibited a To of 59.10, 62.18°C and TP of 104.91, 98.10 °C, respectively. This investigation indicates that the collagen isolated from the squid skin, which is thrown as waste in the seafood-processing plant, might supplement the vertebrate collagen in industrial applications.
Geografia di un viaggiatore pavido di Luigi Farrauto
Creators: name: Gavinelli, Dino
Publisher: name: Semestrale di studi e ricerche di geografia
Year: 2024

description: Già dal titolo Luigi Farrauto ci fa capire chiaramente che il libro che si va a leggere è originale nel contenuto e nella forma. In effetti, nell’immaginario collettivo, ai sostantivi “Geografia” e “Viaggiatore” vengono solitamente associate azioni, pratiche e qualità positive quali l’evasione dal quotidiano, lo spostamento dalla propria abituale dimora e la scoperta di altre regioni, la curiosità per il contatto con altri popoli e altre culture, la possibilità di poter lasciare per un certo periodo i propri ritmi giornalieri per andare a conoscere altri territori e paesaggi, persino l’avventura e l’audacia se le mete scelte per il viaggio sono poco battute dai grandi flussi del turismo, la spensieratezza delle vacanze e del tempo libero, il coraggio di mettersi in discussione con pratiche ed esperienze non ordinarie, la libertà dalle convenzioni e molto altro ancora.
description: Semestrale di studi e ricerche di geografia, N. 1 (2024)
Antibacterial activity of plumbagin derivative-rich Plumbago indica root extracts and chemical stability
Creators: name: Sermwut Kaewbumrung
name: Pharkphoom Panichayupakaranant
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorized

description: The extraction studies and a one-step purification of the crude extract of Plumbago indica using silica-gel vacuum chromatography provided a plumbagin derivative-rich P. indica root extract (PPE). The PPE was standardised to contain total plumbagin derivatives not less than 13% w/w. Antibacterial activities of the standardised PPE and three naphthoquinones, plumbagin, elliptinone and 3,3′-biplumbagin, against Propionibacterium acnes, Staphylococcus aureus and Staphylococcus epidermidis were evaluated by using the microdilution assay. The bactericidal activities of the PPE against these bacteria were much stronger than those of elliptinone and 3,3′-biplumbagin and almost equal to those of plumbagin. Stability of the PPE was determined under various conditions through a period of four months. The PPE was stable over a period of four months when stored as a dried powder but only in a well-closed container protected from light under 4 ± 2°C.
Garcinielliptone FC, a polyisoprenylated benzophenone from Platonia insignis Mart., promotes vasorelaxant effect on rat mesenteric artery
Creators: name: Arcanjo, Daniel Dias Rufino
name: Costa-Júnior, Joaquim Soares Da
name: Moura, Lucas Henrique Porfírio
name: Ferraz, Alexandre Barros Falcão
name: Raíssa Rebés Rossatto
name: David, Jorge Maurício
name: Quintans-Júnior, Lucindo José
name: Oliveira, Rita De Cássia Meneses
name: Antônia Maria Das Graças Lopes Citó
name: Aldeídia Pereira De Oliveira
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorized

description: Polyisoprenylated benzophenones represent a group of chemical compounds commonly identified in Clusiaceae species and are responsible for a large amount of biological activities. In this work, the vasorelaxant effect induced by garcinielliptone FC (GFC) isolated from Platonia insignis Mart. (Clusiaceae), a monotype species from Platonia genus, was investigated. GFC promoted an endothelium-independent vasorelaxation on phenylephrine (PHE, 10− 5 mol L− 1)-induced vasoconstriction, but not on KCl (80 mmol L− 1)-induced vasoconstriction, on rat superior mesenteric artery rings. In addition, a concentration-dependent decrease of PHE- or serotonin-induced cumulative concentration–response curves was observed for GFC, and a slight decrease of pD2 value on CaCl2-induced vasoconstriction. In a Ca2+-free medium, GFC interfered in calcium mobilisation from PHE (10− 5 mol L− 1)-sensitive intracellular stores. GFC-induced vasorelaxant effect is probably mediated by a dual effect on mobilisation of calcium intracellular stores and attenuation of transmembrane calcium influx.
Genetic diversity of functional food species Spinacia oleracea L. by protein markers
Creators: name: M. Rashid
name: Z. Yousaf
name: M.S. Haider
name: S. Khalid
name: H.A. Rehman
name: A. Younas
name: A. Arif
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorised

description: Exploration of genetic diversity contributes primarily towards crop improvement. Spinaciaoleracea L. is a functional food species but unfortunately the genetic diversity of this vegetable is still unexplored. Therefore, this research was planned to explore the genetic diversity of S. oleracea by using morphological and protein markers. Protein profile of 25 accessions was generated on sodium dodecyl sulphate polyacrylamide gel. Total allelic variation of 27 bands was found. Out of these, 20 were polymorphic and the rest of the bands were monomorphic. Molecular weights of the bands ranged from 12.6 to 91.2 kDa. Major genetic differences were observed in accession 20541 (Peshawar) followed by 20180 (Lahore) and 19902 (AVRDC). Significant differences exist in the protein banding pattern. This variation can further be studied by advanced molecular techniques, including two-dimensional electrophoresis and DNA markers.
OILAVIY (MAISHIY) ZO`RAVONLIKLARNING OLDINI OLISH
Creators: name: Pirmanova, Sabrina
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada tazyiq va zo„ravonlikka uchragan ayollarni qo`llab-quvvatlash, ularning huquq va manfaatlarini himoya qilish, ijtimoiy reablitatsiyani amalga oshirish bo„yicha tahlillar amalga oshirilgan.
Science Checker: Extractive-Boolean Question Answering For Scientific Fact Checking
Creators: name: Rakotoson, Loïc
name: Letaillieur, Charles
name: Massip, Sylvain
name: Laleye, Fréjus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: I.2.7; H.3.3

description: With the explosive growth of scientific publications, making the synthesis of scientific knowledge and fact checking becomes an increasingly complex task. In this paper, we propose a multi-task approach for verifying the scientific questions based on a joint reasoning from facts and evidence in research articles. We propose an intelligent combination of (1) an automatic information summarization and (2) a Boolean Question Answering which allows to generate an answer to a scientific question from only extracts obtained after summarization. Thus on a given topic, our proposed approach conducts structured content modeling based on paper abstracts to answer a scientific question while highlighting texts from paper that discuss the topic. We based our final system on an end-to-end Extractive Question Answering (EQA) combined with a three outputs classification model to perform in-depth semantic understanding of a question to illustrate the aggregation of multiple responses. With our light and fast proposed architecture, we achieved an average error rate of 4% and a F1-score of 95.6%. Our results are supported via experiments with two QA models (BERT, RoBERTa) over 3 Million Open Access (OA) articles in the medical and health domains on Europe PMC.
description: 8 pages, 4 figures
Cell Outage Detection Through Density-based Local Outlier Data Mining Approach: In case of Ethio telecom UMTS Network
Creators: name: Solomon, Bekele
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Mobile traffic growth increases exponentially over the years. To gratify the growing traffic, which requires capacity and coverage, densification of a network is a key solution. As mobile network becomes larger and larger, it is difficult to manage the network manually rather it requires automated network management. Self-healing is one of self-organizing network (SON's) functionalities that implements automatic fault management in radio access network (RAN). In practice, mobile cell outage is the major problem in the radio access network and leads to the lack of network service. The automated and timely detection of a malfunctioning cell is one of the crucial challenges for network operators. In this thesis, data mining model has been introduced to detect cell outage automatically. Density-based Local Outlier Factor (LOF) detection algorithm, which is a decisive part of the model, has been adopted and implemented using incoming handover statistical data to detect cell outage and sleeping cells in self-organizing manner. For this purpose, statistical handover data has been collected from real UMTS network and then preprocessed using filtering, aggregation, normalization and then profiling. Moreover, an improved version of LOF algorithm, fast anomaly detection with duplication (FADD), has also been implemented to improve the detection capability. Receiver Operating Characteristic (ROC) curve is used to show the degree of the performance of the algorithms. The study shows that the two versions of LOF cell outage detectors have detected most cells in outage and locate their positions. But, FADD has detected 89% compared to 75% of the original LOF.
MPEC 2024-V40 : 2024 VJ
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 VJ

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Enhanced thebaine production in Papaver bracteatum cell suspension culture by combination of elicitation and precursor feeding
Creators: name: Zare, Nasser
name: Farjaminezhad, Reza
name: Rasool Asghari-Zakaria
name: Farjaminezhad, Manoochehr
Publisher: name: Taylor & Francis
Year: 2014
Subjects: Uncategorised

description: In this study, the effect of methyl jasmonate (MJ) and ultrasound (US), individually and in combination with L-tyrosine, on the stimulation of thebaine production in Papaver bracteatum cell suspension cultures was studied. The addition of L-tyrosine did not significantly affect the cell biomass, but significantly increased the thebaine yield of cells compared with the control. The synergistic effects of MJ and L-tyrosine in the combined treatment of 100 μM MJ and 2 mM L-tyrosine increased the thebaine yield of cells up to 84.62 mg L− 1 at 6 days after treatment. Sonication of the cells for 20 s caused a significant decrease in cell growth and biomass, whereas the thebaine yield increased up to 39.60 mg L− 1 at 6 days after treatment. The combination of US (10 s) and L-tyrosine feeding (2 mM) significantly increased the production of thebaine in comparison to individual utilisation of 2 mM L-tyrosine and US (10 s).