Ductile cast irons: microstructure influence on fatigue crack propagation resistance by Francesco Iacoviello, Vittorio Di Cocco, Mauro Cavallini

“…Microstructure influence on fatigue crack propagation resistance in five different ductile cast irons (DCI) was investigated. Four ferrite/pearlite volume fractions were considered, performing fatigue crack propagation tests according to ASTM E647 standard (R equals to 0.1, 0.5 and 0.75, respectively). …”
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SFannotation: A Simple and Fast Protein Function Annotation System by Dong Su Yu, Byung Kwon Kim

“…We developed SFannotation, a simple and fast functional annotation system that rapidly annotates putative proteins against four extant databases, Swiss-Prot, TIGRFAMs, Pfam, and the non-redundant sequence database, by using a best-hit approach with BLASTP and HMMSEARCH.…”
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Plants and Fungal Products with Activity Against Tuberculosis by Marcus Vinicius Nora De Souza

“…This contagious disease kills four people every minute somewhere in the world and accounts for more than 2 million deaths per year. …”
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Enhancing Reading Comprehension through an Intensive Reading Approach by Andrés Insuasty Cárdenas

“…In the evaluation stage, four instruments (reading tests, teacher’s journal, students’ questionnaires and pre- and post-tests) were used to collect the students’ opinions and state the results. …”
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Research on Space-Ground Network Security Guarantee Technology by Fenghua LI, Linjie ZHANG, Yueming LU, Kui GENG, Yunchuan GUO

“…The characteristics of space-ground network was combed.Against security threats in space-ground network,the security risks faced by measurement control,operation control,terminal access,wireless transmission,transmission,business information system,maintenance management were analyzed.Further,by dividing space-ground network security into four layers:foundation layer,access layer,network layer and application layer,a security architecture to protect space-ground network was proposed.An implement mechanism (including unifi ed security management and security situation aware,entity authentication and access protection,interconnection control,cipher on-demand service,dynamic reconstruction of security service ) was designed to guarantee the security of space-ground network.…”
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Enlarged current injection model for the power flow solution of unbalanced distribution networks by Rubén Carmona-Pardo, Álvaro Rodríguez del Nozal, Esther Romero-Ramos, Antonio Gómez-Expósito

“…This paper presents an approach for the power flow solution of three-phase, four-wire unbalanced distribution networks. The proposed formulation uses rectangular coordinates and, unlike most earlier approaches, both bus voltages and injected currents are retained as variables. …”
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Longitudinally Vibrating Elastic Rods with Locally and Non-Locally Reacting Viscous Dampers by Şefaatdin Yüksel, Uğur Dalli

“…The variation of the damping ratios with respect to damper locations and damping coefficients for the first four eigenfrequencies are obtained. It is shown that at any mode of locally or non-locally damped elastic rod, the variation of damping ratio with damper location is linearly proportional to absolute value of the mode shape of undamped system. …”
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Mechanism Design and Motion Optimization of the Flip Mechanism of Glass Loading Machine by Lv Kun, Yan Minghui, He Lifang

“…The glass loading machine is important equipment which generally uses four-bar mechanism to flip a piece of glass,and the mechanism decides the motion performance of the glass loading machine.According to the working space constraints and motion requirement,the initial position conditions of the flip mechanism is got and based on it the structure design is conducted by the rigid body guidance method for mechanism design,and the reasonable structure size is given.The mechanism motion simulation model is built with the ADAMS software,and then the motion characteristics of the mechanism is analyzed based on the simulation result when input a uniform motion.In order to improve the working stability of loading machine,a reasonable control mode of input motion to the driving link is proposed.…”
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Numerical study and pilot evaluation of experimental data measured on specimen loaded by bending and wedge splitting forces by S. Seitl, R. Diego Liedo

“…The fracture mechanical properties of silicate based materials are determined from various fracture mechanicals tests, e.g. three- or four- point bending test, wedge splitting test, modified compact tension test etc. …”
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Reconstructing the Greek Summer: the role of the Press for restarting travel and tourism in the Covid-19 pandemic era by Petros Kosmas, Petros Giannoulis, Maria Panagopoulou, Leonidas Vatikiotis, Hristo Andreev, Antonis Theocharous

“…Content Analysis was applied to the editorial columns of four Greek daily newspapers to examine whether and to what extent the political affiliation of these newspapers influenced their perception of the decision-making process and the management concerning the resumption of tourism by the Greek government. …”
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Two New Generalizations of Extended Bernoulli Polynomials and Numbers, and Umbral Calculus by Nabiullah Khan, Mohd Ghayasuddin, Dojin Kim, Junesang Choi

“…Furthermore, we propose to introduce four generalizations of the extended Euler and Genocchi polynomials. …”
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Sémiotique de l’enterrement prématuré : le féminisme à l’ère du postféminisme by Mary Hawkesworth

“…This essay investigates the strange coincidence of the unprecedented growth of global feminism over the past four decades with recurrent proclamations of feminism’s death. …”
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Research on Intelligent Recognition and Classification Algorithm of Music Emotion in Complex System of Music Performance by Daliang Wang, Xiaowen Guo

“…Through the recognition of SVM, KNN, ANN, and ID3 classifiers, the accuracy of a single classifier is compared, and then the four classifiers are combined to compare the classification accuracy of audio signals before and after preprocessing. …”
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A Hybrid Metaheuristic for Multiple Runways Aircraft Landing Problem Based on Bat Algorithm by Jian Xie, Yongquan Zhou, Hongqing Zheng

“…In this paper, the multiple runways case of the static ALP is considered and a hybrid metaheuristic based on bat algorithm is presented to solve it. Moreover, four types of landing time assignment strategies are applied to allocate the scheduling time, and a constructed initialization is used to speed up the convergence rate. …”
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Market Efficiency and Organizational Corruption: Study on the Impact on Shareholder Value by Renata Crosara Miari, José Marcos Carvalho de Mesquita, Daniel Jardim Pardini

“…With this study, we e valuated the influence of disclosure of the involvement of organizations in corruption on creating value for shareholders. We chosen four companies that had their names linked to allegations of corruption in the past 10 years. …”
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The politics of liturgy between tradition and modernity in South Africa by J. Rossouw

“…I propose to answer this question in the following four steps. First, the notion of liturgy with reference to politics will be briefly discussed. …”
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A Review and Criticism of Virtuous Life in the Secular Age by Mokhtar Nouri, Ghodrat Ahmadian

“…Criticism of the work indicates that methodologically the work has not been able to implement the four stages of Springs. Therefore, the most important critique of the present work can be considered a "methodological" critique.…”
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Mobile devices as support for students with special educational needs by Sylwia Galanciak, Anna Weiss, Marek Siwicki

“…The article presents partial results of research conducted among forty eight teachers from four European countries, using tablets to work with students with special educational needs (SENs). …”
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Small Farm Food Safety, Fresh Produce—Part 2: The Buck Stops Here by Amy Simonne, Mickie E. Swisher, K. N. Moore, Kaylene Sattanno

“…Part 2 consists of a group discussion based on four scenarios in which people obtained food poisoning. …”
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The three-dimensional N $$ \mathcal{N} $$ = 2 superfishnet theory by Moritz Kade

“…Furthermore, we confirm the results of the supersymmetric dynamical fishnet theory by applying our methods to four-dimensional N $$ \mathcal{N} $$ = 1 superspace.…”
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