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Cyberbullying Sexism Harassment Identification by Metaheurustics-Tuned eXtreme Gradient Boosting

Computers, Materials and Continua 2024年第3期80卷 4997-5027页

作者： Dobrojevic, Milos jovanovic, luka Babic, Lepa Cajic, Miroslav Zivkovic, Tamara Zivkovic, Miodrag Muthusamy, Suresh Antonijevic, Milos Bacanin, Nebojsa Technical Faculty Singidunum University Belgrade 11000 Serbia Informatics and Computing Singidunum University Belgrade 11000 Serbia Business Economics Singidunum University Belgrade 11000 Serbia Computing and Informatics Sinergija University Bijeljina 76300 Bosnia and Herzegovina Department for Information Systems and Technologies University "Union Nikola Tesla" Cara Dusana Belgrade 11080 Serbia Department for Computer Science and Informatics School of Electrical Engineering University of Belgrade Belgrade 11000 Serbia Department of Electrical and Electronics Engineering Kongu Engineering College (Autonomous) Perundurai Erode 638060 India Department of Mathematics Saveetha School of Engineering (Deemed to be University) SIMATS Thandalam Chennai 602105 India MEU Research Unit Middle East University Amman 11831 Jordan

Cyberbullying is a form of harassment or bullying that takes place online or through digital devices like smart-phones, computers, or tablets. It can occur through various channels, such as social media, text messages, online forums, or gaming platforms. Cyberbullying involves using technology to intentionally harm, harass, or intimidate others and may take different forms, including exclusion, doxing, impersonation, harassment, and cyberstalking. Unfortunately, due to the rapid growth of malicious internet users, this social phenomenon is becoming more frequent, and there is a huge need to address this issue. Therefore, the main goal of the research proposed in this manuscript is to tackle this emerging challenge. A dataset of sexist harassment on Twitter, containing tweets about the harassment of people on a sexual basis, for natural language processing (NLP), is used for this purpose. Two algorithms are used to transform the text into a meaningful representation of numbers for machine learning (ML) input: Term frequency inverse document frequency (TF-IDF) and Bidirectional encoder representations from transformers (BERT). The well-known eXtreme gradient boosting (XGBoost) ML model is employed to classify whether certain tweets fall into the category of sexual-based harassment or not. Additionally, with the goal of reaching better performance, several XGBoost models were devised conducting hyperparameter tuning by metaheuristics. For this purpose, the recently emerging Coyote optimization algorithm (COA) was modified and adjusted to optimize the XGBoost model. Additionally, other cutting-edge metaheuristics approach for this challenge were also implemented, and rigid comparative analysis of the captured classification metrics (accuracy, Cohen kappa score, precision, recall, and F1-score) was performed. Finally, the best-generated model was interpreted by Shapley additive explanations (SHAP), and useful insights were gained about the behavioral patterns of people w

关键词： Smartphones

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Solid-state impedance spectroscopy studies of dielectric properties and relaxation processes in Na_(2)O–V_(2)O_(5)–Nb_(2)O_(5)–P_(2)O_(5) glass

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International Journal of Minerals,Metallurgy and Materials 2024年第1期31卷 186-196页

作者： Sara Marijan luka Pavic Division of Materials Chemistry Ruđer Boskovic InstituteBijenicka 54HR-10000 ZagrebCroatia

Solid-state impedance spectroscopy(SS-IS)was used to investigate the influence of structural modifications resulting from the addition of Nb2O5 on the dielectric properties and relaxation processes in the quaternary mixed glass former(MGF)system 35Na_(2)O–10V_(2)O_(5)–(55-x)P_(2)O_(5)–xNb_(2)O_(5)(x=0–40,mol%).The dielectric parameters,including the dielectric strength and dielectric loss,are determined from the frequency and temperature-dependent complex permittivity data,revealing a significant dependence on the Nb2O5 *** transition from a predominantly phosphate glass network(x<10,region I)to a mixed niobate–phosphate glass net-work(10≤x≤20,region II)leads to an increase in the dielectric parameters,which correlates with the observed trend in the direct-cur-rent(DC)*** the predominantly niobate network(x≥25,region III),the highly polarizable nature of Nb5+ions leads to a fur-ther increase in the dielectric permittivity and dielectric *** is particularly evident in Nb-40 glass-ceramic,which contains Na_(13)Nb_(35)O_(94) crystalline phase with a tungsten bronze structure and exhibits the highest dielectric permittivity of 61.81 and the lowest loss factor of 0.032 at 303 K and 10 *** relaxation studies,analyzed through modulus formalism and complex impedance data,show that DC conductivity and relaxation processes are governed by the same mechanism,attributed to ionic *** contrast to glasses with a single peak in frequency dependence of imaginary part of electrical modulus,M″(ω),Nb-40 glass-ceramic exhibits two distinct contributions with similar relaxation *** high-frequency peak indicates bulk ionic conductivity,while the additional low-fre-quency peak is associated with the grain boundary effect,confirmed by the electrical equivalent circuit(EEC)*** scaling characteristics of permittivity and conductivity spectra,along with the electrical modulus,validate time-temperature superposition and demonstrate a

关键词： phosphate glasses glass-ceramics impedance spectroscopy dielectric properties relaxation processes permittivity scaling conductivity scaling modulus formalism

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Rock Mass Quality Rating Based on the Multi-Criteria Grey Metric Space

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Computer Modeling in Engineering & Sciences 2024年第9期140卷 2635-2664页

作者： Miloš Gligoric Zoran Gligoric Saša jovanovic Suzana Lutovac Dragan Pamucar Ivan Jankovic Faculty of Mining and Geology University of BelgradeBelgrade11000Serbia Faculty of Technical Sciences University of PrištinaKosovska Mitrovica38220Serbia Department of Operations Research and Statistics Faculty of Organizational SciencesUniversity of BelgradeBelgrade11000Serbia College of Engineering Yuan Ze UniversityTaoyuan City320315TaiwanChina

Assessment of rock mass quality significantly impacts the design and construction of underground and open-pit mines from the point of stability and *** study develops the novel Gromov-Hausdorff distance for rock quality(GHDQR)methodology for rock mass quality rating based on multi-criteria grey metric *** usually presents the quality of surrounding rock by classes(metric spaces)with specified properties and adequate interval-grey *** the distance between surrounding rock sample characteristics and existing classes represents the core of this *** Gromov-Hausdorff distance is an especially useful discriminant function,i.e.,a classifier to calculate these distances,and assess the quality of the surrounding *** efficiency of the developed methodology is analyzed using the Mean Absolute Percentage Error(MAPE)*** existing methods,such as the Gaussian cloud method,Discriminant method,Mutation series method,Artificial neural network(ANN),Support vector machine(SVM),Grey wolf optimizer and Support vector classification method(GWO-SVC)and Rock mass rating method(RMR)are used for comparison with the proposed GHDQR *** share of the highly accurate category of 85.71%clearly indicates compliance with actual values obtained by the compared *** results of comparisons showed that the model enables objective,efficient,and reliable assessment of rock mass quality.

关键词： Rock mass rating multi-criteria class metric space interval-grey numbers

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Sodium-dependent glucose transporter 2 inhibitors effects on myocardial function in patients with type 2 diabetes and asymptomatic heart failure

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World Journal of Cardiology 2024年第8期16卷 448-457页

作者： Petra GrubićRotkvić luka Rotkvić AnaĐuzelČokljat Maja Cigrovski Berković Department of Cardiology University Hospital Centre ZagrebZagreb 10000Croatia Department of Cardiology Magdalena Clinic for Cardiovascular DiseaseKrapinske Toplice 49217Croatia Department of Internal Medicine General Hospital DubrovnikDubrovnik 20000Croatia Department for Sport and Exercise Medicine University of Zagreb Faculty of KinesiologyZagreb 10000Croatia

BACKGROUND Sodium-dependent glucose transporter 2 inhibitors(SGLT2i)have shown efficacy in reducing heart failure(HF)burden in a very heterogeneous groups of patients,raising doubts about some contemporary assumptions of their mechanism of *** previously published a prospective observational study that evaluated mechanisms of action of SGLT2i in patients with type 2 diabetes who were in HF stages A and B on dual hypoglycemic *** groups of patients were included in the study:the ones receiving SGLT2i as an add-on agent to metformin and the others on dipeptidyl peptidase-4 inhibitors as an add-on to metformin due to suboptimal glycemic *** To evaluate the outcomes regarding natriuretic peptide,oxidative stress,inflammation,blood pressure,heart rate,cardiac function,and body *** The study outcomes were examined by dividing each treatment arm into two subgroups according to baseline parameters of global longitudinal strain(GLS),N-terminal pro-brain natriuretic peptide,myeloperoxidase(MPO),high-sensitivity C-reactive protein(hsCRP),and systolic and diastolic blood *** evaluate the possible predictors of observed changes in the SGLT2i arm during follow-up,a rise in stroke volume index,body mass index(BMI)decrease,and lack of heart rate increase,linear regression analysis was *** There was a greater reduction of MPO,hsCRP,GLS,and blood pressure in the groups with higher baseline values of mentioned parameters irrespective of the therapeutic arm after 6 months of *** independent predictors of heart rate decrease were a reduction in early mitral inflow velocity to early diastolic mitral annular velocity at the interventricular septal annulus ratio and BMI,while the predictor of stroke volume index increase was SGLT2i therapy *** SGLT2i affect body composition,reduce cardiac load,improve diastolic/systolic function,and attenuate the sympathetic *** control contributes to the i

关键词： Sodium-dependent glucose transporter 2 inhibitors Dipeptidyl peptidase-4 inhibitors Type 2 diabetes mellitus Heart failure Diabetic cardiomyopathy Cardiovascular disease

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帝国主义理论在中国的再阐释——以瞿秋白为线索

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开放时代 2024年第4期 96-108,M0006页

作者：路卡清华大学人文与社会科学高等研究所

帝国主义问题在20世纪共产主义运动的理论脉络中扮演了重要的角色。这类命题在马克思主义思想领域开辟了新的批评视域,也直接促使共产主义运动从一场源于西欧的工人运动扩展为全球范围的革命实践。中国语境中的帝国主义问题是中国共产... 详细信息

帝国主义问题在20世纪共产主义运动的理论脉络中扮演了重要的角色。这类命题在马克思主义思想领域开辟了新的批评视域,也直接促使共产主义运动从一场源于西欧的工人运动扩展为全球范围的革命实践。中国语境中的帝国主义问题是中国共产党革命实践中的关键话题,而瞿秋白对其做了开创性的贡献。重新检视瞿秋白在20世纪20年代初期所参与的两次论争,有助于我们追溯帝国主义理论在中国的传播和再阐释过程。瞿秋白通过调动第三国际语境中的帝国主义理论,对中国的半殖民地处境展开了深入的阐释,从危机的社会形态、畸形政治经济关系与国际依附地位等多重层面,论证了帝国主义时代中国的客体性,同时将相关的理论探析延伸到中国应如何超越其客体地位的革命政治构想上。

关键词：瞿秋白第三国际帝国主义民族解放运动

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如何重新激活民权文化革命的“历史使命”:瞿秋白对革命文艺大众化运动的探讨与构想

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文艺理论与批评 2024年第2期 37-51页

作者： [斯洛文尼亚]路卡清华大学人文与社会科学高等研究所

瞿秋白对“革命文艺大众化运动”的探讨与构想,在20世纪中国左翼文艺发展历程中占据极为重要的位置。瞿秋白的相关讨论,自觉地把左翼文艺问题与革命领导权关联起来,并通过界定其历史属性,赋予中国革命文艺运动以基本的斗争坐标和未来发... 详细信息

瞿秋白对“革命文艺大众化运动”的探讨与构想,在20世纪中国左翼文艺发展历程中占据极为重要的位置。瞿秋白的相关讨论,自觉地把左翼文艺问题与革命领导权关联起来,并通过界定其历史属性,赋予中国革命文艺运动以基本的斗争坐标和未来发展途径。同等重要的是,立于多数平民的政治维度,他观察到了中国文化空间的分裂状态,并且将弥合文化鸿沟看成革命文艺运动的内在动力和历史使命。基于这类观察和认知,瞿秋白从中国近代历史角度阐述了革命文艺大众化运动的“必要性”,并在此基础上,对其执行方案进行了分析和构思。瞿秋白的相关思考,在政治宣传、科学再现和形象思维等各个要素相互渗透、制约和弥补的多重关系中,形成了独有的革命文艺逻辑。

关键词：革命文艺大众化瞿秋白革命五四左联

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Prolonged intermittent theta burst stimulation restores the balance between A_(2A)R-and A_(1)R-mediated adenosine signaling in the 6-hydroxidopamine model of Parkinson's disease

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Neural Regeneration Research 2025年第7期20卷 2053-2067页

作者： Milica Zeljkovic jovanovic Jelena Stanojevic Ivana Stevanovic Milica Ninkovic Tihomir V.Ilic Nadezda Nedeljkovic Milorad Dragic Laboratory for Neurobiology Department of General Physiology and BiophysicsFaculty of BiologyUniversity of BelgradeBelgradeSerbia Medical Faculty of Military Medical Academy University of DefenceBelgradeSerbia

An imbalance in adenosine-mediated signaling,particularly the increased A_(2A)R-mediated signaling,plays a role in the pathogenesis of Parkinson's *** therapeutic approaches fail to alter disease progression,demonstrating the need for novel approaches in *** transcranial magnetic stimulation is a non-invasive approach that has been shown to improve motor and non-motor symptoms of Parkinson's ***,the underlying mechanisms of the beneficial effects of repetitive transcranial magnetic stimulation remain *** purpose of this study is to investigate the extent to which the beneficial effects of prolonged intermittent theta burst stimulation in the 6-hydroxydopamine model of experimental parkinsonism are based on modulation of adenosine-mediated *** with unilateral 6-hydroxydopamine lesions underwent intermittent theta burst stimulation for 3 weeks and were tested for motor skills using the Rotarod ***,quantitative reverse transcription polymerase chain reaction,immunohistochemistry,and biochemical analysis of components of adenosine-mediated signaling were performed on the synaptosomal fraction of the lesioned caudate *** intermittent theta burst stimulation improved motor symptoms in 6-hydroxydopamine-lesioned animals.A 6-hydroxydopamine lesion resulted in progressive loss of dopaminergic neurons in the caudate *** with intermittent theta burst stimulation began 7 days after the lesion,coinciding with the onset of motor *** treatment with prolonged intermittent theta burst stimulation,complete motor recovery was *** improvement was accompanied by downregulation of the e N/CD73-A_(2A)R pathway and a return to physiological levels of A_(1)R-adenosine deaminase 1 after 3 weeks of intermittent theta burst *** results demonstrated that 6-hydroxydopamine-induced degeneration reduced the expression of A_(1)R and elevated the expression of A_(2A)***

关键词： A_(1)R A_(2A)R adenosine receptors adenosine ecto-5′-nucleotidase intermittent theta burst stimulation non-invasive brain stimulation Parkinson's disease purinergic signalling

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Global warming scenarios for the Eastern Adriatic Sea indicate a higher risk of invasiveness of non-native marine organisms relative to current climate conditions

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Marine Life Science & Technology 2024年第1期6卷 143-154页

作者： Branko Glamuzina Lorenzo Vilizzi Marina Piria Ante Zuljevic Ana Bratos Cetinic Ana Pesic Branko Dragicevic Lovrenc Lipej Marijana Pecarevic Vlasta Bartulovic Sanja Grđan Ivan Cvitkovic Tatjana Dobroslavic Ana Fortic luka Glamuzina Borut Mavric Jovana Tomanic Marija Despalatovic Domen Trkov Marina Brailo Scepanovic Zoran Vidovic Predrag Simonovic Sanja Matic-Skoko Pero Tutman Department of Applied Ecology University of DubrovnikDubrovnikCroatia Department of Ecology and Vertebrate Zoology Faculty of Biology and Environmental ProtectionUniversity of LodzLodzPoland Faculty of Agriculture Department of FisheriesApicultureWildlife Management and Special ZoologyUniversity of ZagrebZagrebCroatia Institute of Oceanography and Fisheries SplitCroatia Institute of Marine Biology University of MontenegroKotorMontenegro National Institute of Biology Marine Biology Station PiranPiranSlovenia Teacher Education Faculty University of BelgradeBelgradeSerbia Faculty of Biology University of BelgradeBelgradeSerbia

Globally,marine bioinvasions threaten marine ecosystem structure and function,with the Mediterranean Sea being one of the most affected *** invasions are expected to increase due to climate *** conducted a risk screening of marine organisms(37 fishes,38 invertebrates,and 9 plants),both extant and‘horizon’(i.e.,not present in the area but likely to enter it).Based on expert knowledge for the Eastern Adriatic Sea coasts of Slovenia,Croatia,and Montenegro,screenings were conducted under both current and predicted climate conditions indicating with an increase in sea surface temperature and salinity of the Adriatic Sea together with changes in precipitation *** aims were to:(1)identify non-native extant and horizon marine species that may pose threats to native biodiversity and(2)evaluate the risk of invasiveness of the selected species under current and predicted climate *** the 84 species screened,there was an increase in those ranked as‘high risk’from 33(39.3%)under current climate conditions and to 47(56.0%)under global warming *** those ranked as‘very high’risk,the increase was from 6(7.1%)to 21(25.0%).Amongst the screened species,the already established high-risk species Pacific oyster Magallana gigas and Atlantic blue crab Callinectes sapidus represent a threat to ecosystem *** the under-representation of marine species in the current European Union List,the species we have ranked as high to very high risk should be included.

关键词： AS-ISK Early detection Introduction vectors/pathways Invasive species Rapid response

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Example-based dynamic façade design using the façade daylighting performance improvement(FDPI)indicator

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Building Simulation 2023年第12期16卷 2261-2283页

作者： luka Akimov Andrey Bezborodov Vladimir Badenko Peter the Great Saint-Petersburg Polytechnic University 29 Polytechnicheskaya st.St.Petersburg195251Russian Federation Politecnico di Milano 32 Piazza Leonardo da VinciMilano20133Italy

It remains challenging to conduct an efficient dynamic façade *** this article authors try to address this issue introducing the façade daylighting performance improvement(FDPI)indicator aimed to evaluate the performance of a dynamic(adaptive)façade from its daylighting performance point of *** illustrate the FDPI application the authors introduced the preliminary dynamic façade concept for an office building located in Tel Aviv(Hot-summer Mediterranean Climate Csa)with further shape modification based on the daylighting performance analysis compared to the three alternatives representative of different typologies of dynamic faç*** Bahr,One Ocean and The University of Southern Denmark façade systems were simulated under the same weather and building conditions of the preliminary dynamic façade concept and were considered as a benchmark for the *** final dynamic façade concept elaborated by the authors in the preliminary comparative workflow showed noticeable daylight performance improvement with respect to the case studies comparative *** FDPI metric allowed to estimate a daylighting performance improvement of 43%of the final dynamic façade concept over the case study dynamic façade that showed the best performance in the daylighting simulations.

关键词： dynamic façade adaptive façade daylight performance performance evaluation façade daylighting performance Improvement

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Purinergic Modulation of Activity in the Developing Auditory Pathway

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Neuroscience Bulletin 2020年第11期36卷 1285-1298页

作者： Sasa jovanovic Ivan Milenkovic School of Medicine and Health Sciences Carl von Ossietzky University Oldenburg26129 OldenburgGermany

Purinergic P2 receptors,activated by endogenous ATP,are prominently expressed on neuronal and nonneuronal cells during development of the auditory periphery and central auditory *** the mature cochlea,extracellular ATP contributes to ion homeostasis,and has a protective function against noise ***,we focus on the modulation of activity by extracellular ATP during early postnatal development of the lower auditory *** mammals,spontaneous patterned activity is conveyed along afferent auditory pathways before the onset of acoustically evoked signal *** this critical developmental period,inner hair cells fire bursts of action potentials that are believed to provide a developmental code for synaptic maturation and refinement of auditory circuits,thereby establishing a precise tonotopic *** ATP-release triggers such patterned activity by raising the extracellular K+concentration and contributes to firing by increasing the excitability of auditory nerve fibers,spiral ganglion neurons,and specific neuron types within the auditory brainstem,through the activation of diverse P2 *** review recent studies that provide new models on the contribution of purinergic signaling to early development of the afferent auditory ***,we discuss potential future directions of purinergic research in the auditory system.

关键词： Purinergic signaling Auditory system Development Cochlea Spiral ganglion Auditory brainstem

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