bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance of WC- inserts coated with nanometric [TiN/TiAlN]n- multilayer for the cutting processing of hardened AISI 4340 steel
Authors: Moreno Luis Henry , Caicedo Julio Cesar , Bejarano Gaitan Gilberto , Martínez Federico , Prieto Pulido Pedro
Published: February 2024

In the present work wear resistance of 4 μm uncoated tungsten carbide inserts (WC) and coated with [TiN/TiAlN]n multinanolayered or with commercial TiCN-Al2O3-TiN monolayers (TINAL) are examined. Life tests, cutting area temperature analysis, surface roughness measurements on work pieces, roughness measurements on the attacked surface, contact track analysis between chip-insert and chemical composition analysis (EDS) were carried out. Mechanical tests were conducted on AISI 4340 steel parts using cutting regime and applying high speed cutting (HSC). Machining results showed that for a distance of 8,000 m the inserts coated with 300 bilayers exhibited wear values of 0.117 mm, inserts coated with 200 bilayers showed values of 0.138 mm and those coated with TINAL presented wear values of 0.174 mm. Moreover, the temperature values for cutting speed at 176.6 m/mim for 300 bilayers was 522.6 oC, for 200 bilayers was 721.4 oC and 1,327.6 oC for inserts coated with TINAL. Lower temperatures, caused by a lower friction coeffi cient and cutting force, contribute to life-time increasing at WC inserts.
Robot programming using the paradigm of learning by demonstration
Authors: Nope Sandra , Loaiza Humberto , Caicedo Eduardo
Published: February 2024

This paper presents the appl ication of the paradigm of learning by demonstration for robot programming. Algorithms use bio-inspired techniques to extract relevant information accompanying the demonstrator’s action. A visuo-motor map relates visual inputs to motor commands necessary to imitate a behavior or a task. The system was evaluated qualitatively using a survey, and quantitatively by specifi c metrics to score the quality of the imitation of a group of four gestures. Thus, the learning by demonstration potential for robot programming is corroborated, since the system was able not only to make their own interpretations of the gestures to be taught, but to use the skills learned in conducting novel gestures.
Transport of explosive chemicals from the landmine burial in granular soils
Authors: Gutiérrez Juan Pablo , Padilla Ingrid , Sánchez Luis Dario
Published: February 2024

The transport of explosive-related chemicals (ERCs) in soils was studied during water infiltration and evaporation processes as a function of soil water content and temperature. The experiments were conducted in two 100 cm uniform cylindrical columns packed with homogeneous sand, and instrumented with air and water pressure sensors and sampling ports to monitor hydraulic conditions and ERCs concentration profiles in soil. TNT and DNT crystals were placed in a porous membrane and buried as a point source near the surface of the soil. Spatial and temporal concentration distributions of conservative solutes were used to evaluate transport behavior of TNT and DNT in soils. Velocity variations and comparison with the numericalmodel HYDRUS-2D indicate the presence of preferential flow paths. Water content and movement near TNT and DNT buried source highly influence their transport in soils and near soil-atmospheric surfaces. The formation of preferential flow paths are attributed to disturbances of soil properties by burial of ERC sources and water content heterogeneities. By the analysis of velocity variations, disturbances near the buried source resulted in hydraulic heterogeneities and preferential flow near the source, which influence their transport away from the source. Preferential flow causes faster movement and greater dispersion of the solutes during infiltration periods, and influences the rate of mixing in the system.
Reconstruction of 3d video from 2d real-life sequences
Authors: Ramos Diaz Eduardo , Ponomaryov Volodymyr
Published: February 2024

In this paper, a novel method that permits to generate 3D video sequences using 2D real-life sequences is proposed. Reconstruction of 3D video sequence is realized using depth map computation and anaglyph synthesis. The depth map is formed employing the stereo matching technique based on global error energy minimization with smoothing functions. The anaglyph construction is implemented using the red component alignment interpolating the previously formed depth map. Additionally, the depth map transformation is realized in order to reduce the dynamic range of the disparity values, minimizing ghosting and enhancing color preservation. Several real-life color video sequences that contain different types of motions, such as translational, rotational, zoom and combination of previous ones are used demonstrating good visual performance of the proposed 3D video sequence reconstruction.
simplified evaluation of the reduced kernel to solve the radiation problem of a cylindrical antenna
Authors: Páez Rueda Carlos Iván
Published: February 2024

This paper presents simplified expressions regarding the radiation problem of a cylindrical straight antenna using the method of moments with the so-called reduced kernel or approximate.
Degradation and adsorption of AZO RR239 dye in aqueous solution by nanoscale zerovalent iron particles immobilized on sawdust
Authors: Sánchez Nedher , Vazquez Mario , Torresi Robertoq
Published: February 2024

Carra sawdust pretrated with formaldehyde was used to adsorb RR239 (reactive azo dye) at varying pH and zerovalent iron (ZVI) dosage. Modeling of kinetic results shows that sorption process is best described by the pseudo-second-order model. Batch experiments suggest that the decolorization efficiency was strongly enhanced with the presence of ZVI and low solution pH. The kinetics of dye sorption by mixed sorbent (5 g of sawdust and 180 mg of ZVI) at pH 2.0 was rapid, reaching more than 90% of the total discoloration in three minutes.
Design and implementation of a digital electrocardiographic system
Authors: Vidal Silva Cristian , Gatica Rojas Valeska
Published: February 2024

To work with bioelectrical signals of the human body is not an easy work. It is necessary to know some biological and electric aspects of the human body. This paper describes necessary knowledge and steps for designing and implementing a digital system for acquisition and processing of an electric human body signal: electrocardiographic signal (EKG). Some of the most important aspects to be considered in the implementation of a digital signal processing (DSP) system to work with human bioelectric signals are described: graphic computation, electronic circuits design with real time restrictions, human body electric signals analysis and online algorithms design). In the context of the last two indicated aspects, some algorithms for the signal filtering are described and some improvements to a classic algorithm for QRS detection of an ECG signal are shown.
Active vibration control of a rotor-bearing system based on dynamic stiffness
Authors: Blanco Ortega Andrés , Beltrán Carbajal Francisco , Silva Navarro Gerardo , Oliver Salazar Marco Antonio
Published: February 2024

This paper presents an active vibration control scheme to reduce unbalance-induced synchronous vibration in rotor-bearing systems supported on two ball bearings, one of which can be automatically moved to control the effective rotor length and, as an immediate consequence, the rotor stiffness. This dynamic stiffness control scheme, based on frequency analysis, speed control and acceleration scheduling, is used to avoid resonant vibration of a rotor system when it passes (run-up or coast down) through its first critical speed. Algebraic identification is used for on-line unbalance estimation at the same time that the rotor is taken to the desired operating speed. Some numerical simulations and experiments are included to show the unbalance compensation properties and robustness of the proposed active vibration control scheme when the rotor is started and operated over the first critical speed.
Emulation and remote experimentation as support resources in a PBL approach for control systems
Authors: Fernández Samacá Liliana , Ramírez Scarpetta José Miguel , Orozco Gutiérrez Martha Lucia
Published: February 2024

This paper presents the use of a platform with emulation and remote experimentation tools to support a Project-Based Learning approach for courses of linear-control systems. Emulation and remote experimentation are incorporated as experimentation resources in the academic activities of the approach. The platform resources allow defining projects within new contexts and observing the dynamics of control complex problems from diverse nature. Moreover, emulation is used to experiment with non-available systems in the laboratory and observe the controller performance before implementation in real contexts. This work describes the learning approach, platform, and its different operation conditions. These conditions are shown through the emulation of a DC motor model with oscillating mode. Finally, this paper presents the results of a survey used to evaluate the platform, emphasizing on the assessment of the emulation tool as a learning resource.
Benefits of using ad-hoc inventory management models in the presence of return flows
Authors: Sepúlveda Rojas Juan Pedro , Baesler Abufarde Felipe , Núñez Morales Domingo Antonio
Published: February 2024

In this work we analyze the impact of reverse logistics in inventory management models through the analysis of implications and extensions of some literature models. Through experimentation with deterministic inventory models we found that in most cases, the traditional inventory management costs are higher than the models considering return flows. Only in few cases, mainly when the recoverable inventory holding cost was very high in relation to the serviceable inventory holding cost, the benefits of ad-hoc models was negligible. We also observe that there is no quantitative comparison in the literature between a traditional inventory management and one which considers return flows.
Producción de biodiesel de aceite crudo de palma mediante catálisis heterogénea
Authors: Cardeño Fernando , Ríos Luis , Franco Alexander
Published: February 2024

Se estudió la producción de biodiesel de aceite crudo de palma mediante el uso de catalizadores heterogéneos ácidos y básicos para las etapas de preesterificación y transesterificación respectivamente. La pre-esterificación es necesaria para aceites con una acidez superior al 4% de ácidos grasos libres, ya que se evitan los problemas asociados con la formación de jabones. En ambas reacciones las variables analizadas fueron el tipo de catalizador, la temperatura y el tiempo. Se analizó la conversión del aceite a metilésteres usando cromatografía gaseosa y la estabilidad de los catalizadores mediante su reutilización. En la etapa de pre-esterificación se encontró que catalizadores ácidos del tipo resinas de poliestireno sulfonadas presentan conversiones superiores al 87% estabilidad para la esterificación de los ácidos grasos libres. Para la transesterificación se estudiaron como catalizadores heterogéneos, el carbonato de potasio libre y soportado en una matriz polimérica, obteniéndose con ambos conversiones superiores a 95 % de biodiesel; con el uso del soporte polimérico se disminuyó la velocidad de disolución de carbonato de potasio, permitiendo su reutilización hasta 10 reutilizaciones.
Dissimilarity-based classification for stochastic models of embedding spaces applied to voice pathology detection
Authors: Arias-Londoño Julián , Godino-Llorente Juan , Jaramillo-Garzón Jorge , Castellanos-Domínguez Germán
Published: February 2024

This paper investigates a new way for modelling the nonlinear behavior present in pathological voice signals. The main idea is modelling the timedelay reconstructed attractors, taking into account the spatial and temporal information of the trajectories by means of a discrete Hidden Markov model (HMM). When the attractors are modeled with HMM it is possible to compute a probabilistic kernel-based distance among models to construct a dissimilarity space. This approach enables the possibility of comparing attractor families by their profiles, rather than evaluating individual nonlinear features of each subject. Classification of dissimilarity space is carried out by using a naive 1-nearest neighbors rule and it is compared with another classification scheme that employs two conventional nonlinear statistics: largest Lyapunov exponent and correlation dimension. Results show that the maximum accuracy with the proposed scheme is a 18.71% greater than the maximum accuracy obtained from the classification based on the conventional nonlinear statistics.
Analytical model of wheel-rail contact force due to the passage of a railway vehicle on a curved track
Authors: Otero-Yugat Jesús , Martínez-Miralles Jordi , De los Santos María
Published: February 2024

The relationship between the displacements of the wheel contained within the plane of wheel-rail contact and present during the movement of a train on curved tracks is one of the most important problems of the dynamic railway, modeling through a complex and nonlinear physical phenomenon. In order to analyze the dynamics of a coach that moves along a curve, a global model has been developed which includes the characterization of the track and the fixations, stiffness and damping of the bogie and the identification of global conditions in the wheel-rail contact area. The present article describes an analytical formulation that allows the estimation of the dynamic state due to the passage of a railway vehicle, summarizing the results and simulations derived from the application of that model, under the consideration that the contact between wheel and rail is constant, and thus the turn of the wheelset is due to the path tread.
Selección de la ventana temporal en la transformada de Fourier en tiempos cortos utilizada en el análisis de señales de vibración para determinar planos en las ruedas de un tren
Authors: Flórez Elkin , Cardona Salvador , Jordi Lluïsa
Published: February 2024

Uno de los problemas comunes que se presentan en las ruedas de los trenes, es la presencia de planos. Éstos generan un impacto suficiente como para afectar el funcionamiento normal del tren. La detección temprana de planos en las ruedas permite realizar las correcciones necesarias (tornear la superficie de la rueda) a fin de evitar daños a los componentes del tren que degraden la prestación del servicio a los usuarios. Aunque existen muchos sensores de vibración en el mercado para detectar vibraciones generadas por el paso de un tren, no hay aún una herramienta estándar que permitan detectar la presencia de planos en las ruedas del mismo. Este estudio presenta la selección apropiada de una ventana temporal para utilizar la Transformada de Fourier en Tiempos Cortos (STFT, por sus siglas en inglés) en el análisis de señales de vibración, tomadas al pie del carril y generadas al paso de un tren, que permita determinar la presencia de dichos planos. Para ello, en primer lugar se generó, utilizando la herramienta Matlab, una señal que simule la presencia de un plano y que permita conocer como la STFT, implementando diferentes ventanas temporales (Rectangular, Gauss, Hanning y Chebyshev), permite descubrir la presencia del mismo, en el dominio conjunto tiempo-frecuencia. Seguidamente, se aplica la STFT a señales tomadas en campo. Los resultados obtenidos demuestran que la STFT es una herramienta efectiva para detectar planos en la rueda de los trenes, si la función ventana y sus parámetros se seleccionan correctamente al realizar un análisis tiempo-frecuencia.
Estrategias para la localización relativa de la fuente de huecos de tensión en sistemas de distribución de energía eléctrica
Authors: Barrera-Núñez Víctor Augusto , Berjaga-Moliner Xavier , Ordóñez-Plata Gabriel , Meléndez-Frigola Joaquim
Published: February 2024

En este artículo se presentan y comparan dos estrategias para estimar el origen (aguas arriba o aguas abajo) de huecos de tensión registrados en subestaciones de distribución. La primera estrategia se basa en la aplicación de una regla booleana que conjuga impedancias obtenidas antes y durante la perturbación. La segunda estrategia utiliza la forma de onda completa de las tensiones y corrientes trifásicas registradas durante el evento. Las dos estrategias fueron verificadas con huecos de tensión registrados en subestaciones de distribución.
Editorial
Authors: Gómez-Botero Maryory Astrid
Published: February 2024

Editorial
Some remarks about the distribution of dental decorations in Latin America
Authors: Rodríguez-Flórez Carlos David
Published: February 2024

Introduction: a descriptive analysis of the data obtained in the postdoctoral project “Construction of a Database on Dental Mutilations in Latin America: search, registration, feeding and reporting of new cases” is presented. Methods: information was searched on the Internet using a conventional Google Chrome browser, and a conventional statistical description was carried out using Jamovi 2.3 and R. Results: the variables of a set of 20 American countries are listed and described. Ambiguity is found in the information of some categories; a database is obtained that allows chronological and spatial comparisons. Conclusions: the comparative importance of the variables for archeology is discussed and some methodological and theoretical drawbacks encountered during the process are described. The practice of dental decoration originates in Mesoamerica and spreads to other places on the continent.
Strength and Water Absorption Properties of Cement Bricks Containing Sago Fine Waste
Authors:   Department of Civil Engineering, Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Malaysia, Hani A. Suraya , Norhayati A.W. ,   Department of Civil Engineering, Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Malaysia, Ifaniza I. ,   Politeknik Sultan Azlan Shah, Behrang Stesen, Perak, Malaysia, Ezdiani M. Mazizah ,   Department of Civil Engineering, Faculty of Engineering Technology, University of Technology Sarawak, Malaysia
Published: February 2024

The contamination created by the discharge of sago waste, a by-product of sago milling activities, must be addressed. Using sago waste, specifically sago fine waste (SFW), as a partial cement replacement can be environmentally responsible with a cost-effective choice. The effect of adding sago waste to cement brick characteristics was explored in this study. SFW was utilised to make five brick mixes with partial cement replacement percentages of 0%, 1%, 2%, 3%, 4%, and 5%. The mortar mix has a 1:3 ratio, consistent with Malaysian brick production regulations. All specimens had a water-cement ratio of 0.6 and had been cured for 7, 28, and 56 days for compressive strength tests and density, while water absorption tests were performed on the specimens at cured 28 days. As a result, SFW2 produces the greatest results compared to control bricks, where the compressive strength is 15.8MPa and density is 2157kg/m3 . SFW generally decreased the strength of the brick. However, it was discovered that replacing a maximum of 5% SFW can be used for load-bearing internal wall class 1 because the strength is more than 7 MPa, according to MS 1933: Part 1: 2007. Therefore, This proves the potential of SFW as a new pozzolanic material that can produce more sustainable bricks.
Slurry Infiltrated Fiber Concrete Properties: A Review
Authors:   Department of Highway and Transportation Engineering, Mustansiriyah University, Baghdad, Iraq, Kh. Abuzaid Esraa , Osman S.A. ,   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Amutalib Azrul Bin ,   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Al Zaidee Salah R. ,   Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia
Published: February 2024

“Slurry infiltrated fibrous concrete” refers to a contemporary, high performing fiber-reinforced concrete and infiltrated with a specially designed fiber bed, cement-based slurry. The material has excellent mechanical properties along with high durability and ductility. The SIFCON Laboratory’s research revealed SIFCON to be a unique building material with improved abilities to absorb energy and resist impact, as well as greater ductility and strength. With all these qualities, SIFCON can repair and fortify both reinforced and unreinforced concrete structures. Ductility is currently one of concrete’s most critical characteristics. The issue of brittleness with concrete has been solved by utilizing a high volume of fibers instead of coarse aggregate, which provides stress-resistant properties and increases the ductility of the structural component. However, due to the placement and mixing challenges because of the high volume of fibers’ interlocking action, there is a necessity to design unique production techniques. Since SIFCON compounds are a novel trend in the fields of areas of civil engineering that have a catalytic effect, it is necessary to highlight the few studies that included it so this review paper discusses and presents the behavior of SIFCON under various external loads. The focus is on the effects of the SIFCON mortar type—which substitutes silica fume and/or fly ash for cement—and fiber type—which uses hooked end fiber and micro steel fiber— are the main topic of discussion. The mechanical characteristics and optimal percentages are also reviewed. All previous studies are noted and summaries are made in comprehensive tables, which display the studied parameters and SIFCON mortar mix ratios. In addition to indicating research gaps, for example, future work in this field needs to focus on developing a detailed analytical model that requires the ability to calculate these factors. A better understanding of the SIFCON’s features can serve as a theoretical foundation for future research projects and engineering applications for creating concrete materials for the construction industry.
Optimizing Coal Ash as a Sustainable Substitute of Cement and Aggregate in Structural Concrete
Authors:   Department of Civil Engineering, Mehran University of Engineering, & Technology, Jamshoro,Sindh, Pakistan, Abro Fahad-ul-Rehman , Buller Abdul Salam ,   Civil Engineering Department (TIEST), NED University of Engineering and Technology, Karachi, 75270, Sindh, Pakistan, Ali Tariq ,   Department of Civil Engineering, The Islamia University of Bahawalpur, Punjab, Pakistan, Channa Imran Ali ,   Department of Civil Engineering, Quaid-e-Awam Univeristy of Engineering, Science & Technolgy, Nawabshah, Sindh, Pakistan, Abdin Zain ul ,   Department of Civil Engineering, Quaid-e-Awam Univeristy of Engineering, Science & Technolgy, Nawabshah, Sindh, Pakistan, Ahmad Zaheer Safeer ,   Voluntary Post-Doctoral Researcher, Department of Civil Engineering, Ghent University,  609052 Ghent, Belgium
Published: February 2024

The manufacture of concrete for constructing the structures like highways, bridges, and buildings requires large amounts of cement and aggregates. This high concrete production depletes natural resources like sand and gravel for the construction industry. It also negatively impacts the environment due to cement usage. This study looked at using waste materials like coal bottom ash (CBA) and fly ash (FA) in concrete as substitutes for some of the typical aggregates and cement. The goal was to reduce the environmental impact and preserve natural resources. The study made concrete with regular Portland cement, sand, 10mm coarse aggregate, locally available CBA, and FA. 15% fly ash was selected as an optimal level from initial testing. The CBA was used to replace 0-35% of the fine aggregate sand. Test cubes and cylinders were made with different mixes. Compressive strength, tensile strength, carbonation, and sulfate attack tests were done after curing. Results showed 25% CBA improved the concrete’s mechanical performance. The compressive and tensile strengths increased but not above conventional concrete. This is because CBA needs more moisture for full hydration over longer curing times. Also, the concrete’s durability improved in terms of resistance to carbonation and sulfate attack.
Reservoir Modelling to assess the Releases and Energy Generation for a Projected Scenario of Tarbela Reservoir in Pakistan
Authors:   Department of Civil Engineering, NFC Institute of Engineering and Fertilizer Research, Faisalabad, Pakistan, Ehsan Saqib , Usman Muhammad ,   Department of Civil Engineering, NFC Institute of Engineering and Fertilizer Research, Faisalabad, Pakistan, Munir Muhammad Ahmed ,   Department of Civil Engineering, NFC Institute of Engineering and Fertilizer Research, Faisalabad, Pakistan, Akram Abdullah ,   Department of Civil Engineering, NFC Institute of Engineering and Fertilizer Research, Faisalabad, Pakistan, Taqi Muhammad ,   Department of Civil Engineering, NFC Institute of Engineering and Fertilizer Research, Faisalabad, Pakistan
Published: February 2024

Reservoirs are normally formed by the construction of dams across rivers, but off-channel reservoirs may be provided by diversion structures and canals or pipelines that convey water from a river to natural or artificial depressions. The behaviour of the flow due to construction of dam leads to change in a fluvial process leads to deposition of sedimentation in reservoir. In this research, reservoir modelling has been carried out by using HEC-ResSim for Tarbela reservoir in Pakistan. In Pakistan, the Tarbela Reservoir is the largest reservoir on Indus River and it is the backbone of Pakistan’s agriculture sector and economy. The model was calibrated for year 2014 and validated for year 2020 in terms of outflow and power generation. The results show close comparison between simulated and observed outflow and power values for different scenarios. On the basis of 30-year histogram cycle, the future prediction of releases/outflows, power/energy generation in year 2035 has also been made. After 2035, Tarbela reservoir is expected to become the run-off the river type project due to decrease in the gross storage capacity. As per simulated results of the projected scenario (2035), the releases/outflows from reservoir and energy generation will increase in summer season by 7% and 36% respectively and decrease in winter season by 50% and 37% respectively. Further, the reduction in gross storage capacity due to sedimentation would result in the reduction of annual energy generation by 6.5% in year 2035.
Structural Performance Evaluation of Cross Dapped Connection for Vertical Wall to Wall Connection of Precast Wall Panel
Authors:   Centre for Civil Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, Permatang Pauh Campus, Pulau  Pinang, Malaysia, Jamaludin Amril Hadri , Md Nor Noorsuhada ,   Centre for Civil Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, Permatang Pauh Campus, Pulau  Pinang, Malaysia, Ruslan Amir Khomeiny ,   Centre for Civil Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, Permatang Pauh Campus, Pulau  Pinang, Malaysia., Mat Saliah Soffian Noor ,   Centre for Civil Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, Permatang Pauh Campus, Pulau  Pinang, Malaysia, Ahmad Nurul Ashikin ,   Centre for Civil Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, Permatang Pauh Campus, Pulau  Pinang, Malaysia, Md Hassan Ahmad Syauqi ,   Pusat Kecemerlangan Kejuruteraan dan Teknologi JKR (CREaTE), Alor Gajah, Melaka, Malaysia, Fauzi Mohd Azrizal ,   Centre for Civil Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, Permatang Pauh Campus, Pulau  Pinang, Malaysia, Azian Aziz Nor ,   Pusat Kecemerlangan Kejuruteraan dan Teknologi JKR (CREaTE), Alor Gajah, Melaka, Malaysia
Published: February 2024

In the context of Industrialised Building Systems (IBS), precast concrete buildings are composed of multiple structural members that are interconnected through different techniques. The adoption of precast concrete wall panels has gained significant traction in contemporary construction methodologies. Nevertheless, the utilization of dapped connections specifically designed for non-load bearing applications in precast walls incorporating recycled concrete aggregate (RCA) remains largely unexplored and limited in practice. This research proposes a new wall-to-wall connection for precast wall panels to enhance the constructability of IBS for non-load bearing walls. The novel Cross Dapped (CD) design enables horizontal panel installation in confined areas with existing structural frames, while ensuring the connection’s strength as a non-load bearing wall to prevent failure. Uniformly distributed loads are applied until sample failure, recording compressive load patterns, deflection, stress-strain patterns, and crack patterns on the wall surface. The CD connection demonstrates applicability for precast wall-towall connections, improving IBS constructability with its innovative design and locking system. Overall, this research explores and proposes an efficient and structurally sound wall-to-wall connection design for precast wall panels of non-load bearing system, facilitating the adoption of IBS methods, and improving the overall quality and constructability of building systems.
Modelling of SOLO’s Car Suspension System
Authors:   School of Mechanical Engineering, College of Engineering, UiTM Shah Alam, 40450 Shah Alam, Selangor Malaysia, Ikhsan Nurzaki , Kasiran Ramlan ,   School of Mechanical Engineering, College of Engineering, UiTM Shah Alam, 40450 Shah Alam, Selangor Malaysia, Mat M. Hanif ,   School of Mechanical Engineering, College of Engineering, UiTM Shah Alam, 40450 Shah Alam, Selangor Malaysia
Published: February 2024

The use of a virtual analysis approach to develop and modify vehicle sub-system is becoming popular nowadays as it is less time consuming, reduces the workmanship and overall testing cost compared to the experimental approach. In this paper, an actual virtual suspension system based on UiTM’s Perodua Eco Challenge (PEC) competition fullbody vehicle named SOLO was modelled using multi-body dynamic software, MSC/ADAMS Car. The virtual suspension system model was developed starting from identifying the components’ hard points, parameter setting, and joint type between the suspension components. The complete model was simulated using a static vertical parallel movement test with 30 mm as the selected bump travel movement. Following that, the values of kinematic and compliance of toe, camber and caster change were obtained. It was found that the front toe change was negative when subjected to wheel bound at 30mm (-0.3o), while the trend is opposite with the rear toe change (0.2o). Camber and caster change shows similar trends for both front and rear suspension system. Further analysis was then done to study the dynamic performance and suspension improvement after the virtual suspension system is verified.
Administering AEC Professionals’ Project Delivery Cross-Culture Productivity: Malaysia vs United Kingdom
Authors: Abdul Ghafar Maszura
Published: February 2024

Borderless world is transforming construction professionals on how to communicate and work across the globe. Many missed communication and different work culture could result in many variation orders and time wastage in construction. This paper looks to discuss the mixed research methodology results on how to administer architect, engineer and contractor (AEC) professionals’ cross-work culture productivity during building deployment. 34 participants were selected for semi-structured interviews and participatory observations were conducted in two multidisciplinary teams of architect, engineer, and contractor from the United Kingdom (UK) and the Malaysia firms for six months. Then, SimVision® simulations were use as the Cognitive Organizational Theory (COT) protocols based on structural system and project dexterity parameters. Statistics corroborations were then conducted to obtain generalization and reliability. The case study results showed that the UK and the Malaysian team have similarities in operating nature of building deployment and differences in practice and value preferences when delivering a project, whilst model MMsRwB is the ideal for replicating UK’s project productivity efficiency. The findings could guide international construction professionals or teams from developed and developing countries to joint venture in their country successfully especially for Malaysian context. The paper would firstly discuss the literature, secondly describe the mixed method methodology and then present the expected result. The paper recommends future research on formalizing communication system for AEC professionals through integrating Malaysian AEC transdisciplinary global practice in a design studio education program.
LESYA UKRAINIKA’S UNRHYMIED POEMS: VERSIFICATION FEATURES
Authors:   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Tkachenko A.
Published: February 2024

The researches of Ukrainian vers libre mostly associate its origination with Lesya Ukrainka’s poetical heritage. Not denying the statement about the poetess’s attempts to move away from the rigid rhythmic-metric canons of classical syllabic tonic and explore new ways of modern versification, the author of the article, however, proceeds from the conviction of this artistic speech type’s deep rootedness in rhythmic folk genres (magical formulas, wishes, lamentations, curses, benevolence), as well as in a variety of ritual pre-Christian, double faith and Christian prayer-centric texts (prayers, confessions, supplications, orders etc.). Lesya Ukrainka at the end of the XIX century brought back these old traditions into written secular literature, but her unrhymed poems were still largely inspired by ancient metrics imitation, and remained captive to syllabic-tonic and partly tonic rhythms, varying due to diverse anacrusis, multi-metric verses and slight pausing. Based on the principles of metric plurivalence (I. Kachurovsky’s term), i.e. the ability to measure the same text with different meters (measures). So, the poetess’s rhythmic constructions can be qualified as unrhymed unregulated multi-metric threesyllables with sporadic caesura, complete and truncated pre-caesary and clause feet; as metrically modelled on ancient hexameter imitation, where long metric lines are “cut” by a caesura and arranged in pairs of text lines (“ladder-like”); as poems of the tonic versification system. Both caesura and leimic verse, as well as the standard feet number (in the lines) increase or decrease, have in ancient poetry the certain generalized names of lipometry and hypermetry. Thus, moving away from classical syllabic tonic requirements and using the example of ancient metrics imitation, diversifying it with the casual unregulated combination of multi-metrical three-syllable verses, Lesya Ukrainka brought the modernization of Ukrainian literary poetry closer not only to European and world vers libre creation sources, but also to its origin. Apparently, this was facilitated by her folkloristic activities, which did not allow to forget the “old”, revived in the “new”. Key words: vers libre, inconsistent (casual) syllabic tonic, metric plurivalence, variable anacrusis, lipometry, hypermetry, ancient metrics imitation.
ROMANTICISM OF THE FOREST UKRAINE IN THE ASSESSMENT OF D. CHYZHEVSKY
Authors:   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine, Gaevska N. M. , Naumovska O. V. ,   Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
Published: February 2024

The article focuses on D. Chyzhevsky’s assessment of Lesya Ukrainka’s romanticism, outlines the latest trends in the literature of the late XIX – early XX centuries, which professed Lesya Ukrainka as a neo-romantic. The aesthetics of romanticism and its transformation into neo-romanticism are traced. It is about identifying and analyzing the symbolism of Lesya Ukrainka’s works. The subject matter of the poet’s works is considered, the influence of romantic ideas (German, Polish romanticism) at the end of the XIX century is comprehended; combination of theoretical views of the writer with works of art, which is characteristic of romantic writers.
Problems of identification of sensory impairments and deafblindness in the nowadays children with congenital disabilities
Authors: Khokhlova A.Y. , Moreau C.
Published: February 2024

This review provides an overview of the challenges of identifying dual sensory impairment in children with congenital disabilities. The concept of deafblindness and the special needs of the group with hearing and visual impairments are reviewed. The difficulties of defining this condition due to the heterogeneity of this group are emphasized. The evolution of the etiology of sensory impairment, typical for recent decades, is described, due to the progress of medical science, which makes it possible to keep alive children with severe genetic pathologies and those born considerably prematurely. The characteristics of cerebral hearing and visual impairments, still insufficiently studied but coming to the forefront in terms of prevalence among children in developed countries, as well as the features of their identification are presented. The difficulties in the organization of psychological and pedagogical assessments of children with congenital dual sensory impairment and the interpretation of their results are considered. The conclusion about the importance of the functional approach in the assessment of sensory functions in children with congenital complex disabilities is formulated.
National Scientific Conference „The role of diplomacy and diplomatic law in international relations", Warszawa, March 23-24, 2022
Authors: Szwed Agata , Zagrodzki Dariusz
Published: February 2024

W dniach 23–24 marca 2023 r. w Warszawie odbyła się ogólnopolska konferencja naukowa zatytułowana „Rola dyplomacji i prawa dyplomatycznego w stosunkach międzynarodowych”, zorganizowana przez Grupę Polską Stowarzyszenia Prawa Międzynarodowego (International Law Association – ILA) oraz Wydział Prawa i Administracji Uniwersytetu Szczecińskiego.
Medicina baseada na pessoa: a prática do acolhimento e a conduta voltada à subjetividade na intervenção em saúde
Authors: Costa Thomás Carvalho , Rodrigues Jady Xavier , Ramalho Larissa Torres Rocha , Souza Junior Paulo Cesar de
Published: February 2024

O presente artigo aborda a relevância crescente de uma prática médica que enfatiza a individualidade, as experiências e as necessidades específicas do paciente. Assim, o objetivo desta revisão de literatura é explorar como a medicina baseada na pessoa, com foco no acolhimento e na consideração da subjetividade do paciente, pode enriquecer a prática clínica e contribuir para melhores resultados de saúde. Na metodologia adotada, realizou-se uma análise de artigos científicos, publicações em periódicos renomados, livros e documentos de referência, abrangendo um período que vai das últimas décadas até o momento atual. Foram selecionadas fontes que discutem tanto os aspectos teóricos quanto as aplicações práticas da medicina baseada na pessoa, bem como estudos de caso que ilustram a eficácia dessa abordagem na prática médica. Os resultados obtidos nesta revisão destacam que a medicina baseada na pessoa, ao centrar-se no acolhimento e na valorização da subjetividade do paciente, promove uma relação médico-paciente mais empática e colaborativa, contribuindo para uma compreensão das necessidades e expectativas do paciente, o que é importante para o desenvolvimento de planos de tratamento mais eficazes e personalizados. Igualmente, observou-se que tal prática pode levar a uma maior satisfação do paciente, melhor adesão ao tratamento e, consequentemente, a melhores resultados de saúde.
A RESISTÊNCIA DA MULHER NEGRA ATRAVÉS DA LITERATURA AFRICANA
Authors: RODRIGUES Marcicleia Rodrigues e
Published: February 2024

The present work sought to analyze the works produced from the post-colonial period, emphasizing three renowned African writers, Paulina Chiziane, Chimamanda Ngozi Adichie and Scholastique Mukasonga, from Mozambique, Nigeria and Rwanda, respectively. From this, we sought to problematize how Black African writers represent and evidence the resistance of female characters in their literary works. Therefore, with the objectives, we sought to list the forms of representations of Black women and their rise in African literature as a form of resistance and show the importance of women's studies for the understanding and discussion of the debate on feminism and gender in Africa. The methodology adopted was bibliographical in nature and it was found that, based on a reflective process, the characters, when they understand how the structures work and who it really benefits, they use it in their favor, creating resistance strategies in the face of an oppressive society and exclusive.
Surgical excision of the right ventricular hydatid cyst: a case report
Authors: ABANOZ Mustafa , YAZAR Mehmet , TALAY Süreyya , MANSUROGLU Candan
Published: February 2024

Hydatid cyst is described as an endemic situation predominantly observed in different undeveloped regions of the world which is caused by Echinococcus granulosus tapeworm. This disease usually affects the lungs or liver. Cardiac location is reported in less than 2 % to 0.5% of patients in all cases and as in our case the intraventricular location is seen seldomly. A 38-year-old female patient with diagnosed systemic hydatid cyst disease was consulted with chest pain, palpitation, and shortness of breath. Transthoracic echocardiography and cardiac computerized tomography imaging showed the location of the cardiac hydatid cyst was the right ventricle. She underwent elective surgery swiftly and was discharged uneventfully.
Crecimiento y rendimiento de sandía injertada en suelo infestado con Meloidogyne incognita (Tylenchida: Heteroderidae)
Authors: Basto-Pool C. I. , Reyes-Oregel V , Herrera-Parra E. , Tun-Suarez J.M. , Cristóbal Alejo Jairo
Published: February 2024

El objetivo fue evaluar el crecimiento, rendimiento y tolerancia de injertos de sandía al parasitismo de Meloidogyne incognita. Se injerto sandía sobre portainjertos de Lagenaria siceraria, Cucurbita moschata, Cucumis melo y Cucumis sativus. Se evaluó variables agronómicas, rendimiento y tolerancia a nematodos. Las plantas injertadas florecieron ocho días antes, presentaron mayor crecimiento, incrementaron el rendimiento (18.52 t ha-1) y tamaño del fruto hasta 18 % respecto al testigo. La sandía injertada sobre L. siceraria y C. moschata obtuvieron el menor índice de agallamiento (11 y 25 % respectivamente), número de huevos por g de raíz (544 y 753 respectivamente) y número de hembras por g de raíz (12 y 22 respectivamente) en comparación con el testigo. El estudio mostró que el crecimiento, la floración y el rendimiento de las plantas injertadas fueron influenciadas positivamente por los portainjertos ante la presencia de nematodos
Caracterización morfo – cultural y variabilidad genética y molecular de aislamientos de Trichoderma
Authors: Ynfante Martínez Danay , Martínez-Coca Benedicto , Peteira-Delgado Belkis , Reyes-Duque Yusimy , Gil Katia , Simpson June , Herrera-Estrella Alfredo
Published: February 2024

El trabajo tuvo como objetivo caracterizar aislados de Trichoderma sobre la base de caracteres morfo-culturales, compatibilidad vegetativa y variabilidad molecular. Las descripciones morfológicas se realizaron a partir de observaciones microscópicas de microcultivos, según Rifai, Gams y Bissett. Las relaciones de compatibilidad vegetativa se evaluaron macroscópicamente y se determinó el tipo de reacción (compatible e incompatible). La variabilidad genética de los aislamientos se determinó mediante el uso de la técnica RAPD; los resultados se analizaron por el método Jaccard mediante el paquete estadístico FreeTree. Los aislados presentaron características morfológicas similares, no obstante, mostraron diferencias en la coloración de las colonias y la morfometría de las estructuras fúngicas. Los aislamientos mostraron compatibilidad vegetativa con las especies Trichoderma viride, Trichoderma asperellum y Trichoderma atroviride, como entre ellos, lo que muestra la cercanía genética. Los 11 iniciadores RAPD generaron un total de 92 bandas reproducibles. De estas, 65 fueron polimórficas, para un 70,7 % de polimorfismo; solo OPH-19 mostró 100 % de polimorfismo. El análisis de agrupamiento por UPGMA mostró variabilidad intraespecífica, formándose cuatro grupos. Para T.13, T.17, T.75 y T.78 se detectaron bandas específicas, importante para el diseño de cebadores específicos, lo que posibilita su autenticación, protección y monitoreo en sistemas productivos.
Oreganón, perejil, cilantro, hierbabuena y albahaca a través de difracción de rayos x
Authors: López-Martínez Sugey , Chan-Jiménez Jesús Enrique , Hernández López Eduardo Salvador , Rodríguez-Luna Ana Rosa
Published: February 2024

Las plantas tienen una historia de uso tradicional por su efecto culinario, así como su capacidad para prevenir y tratar enfermedades, contienen una gran variedad de metabolitos secundarios comúnmente etiquetados como fitoquímicos, que pueden funcionar para reducir el riesgo de enfermedades crónicas. El presente trabajo se realizó una revisión bibliográfica y se analiza a las especies Plectranthus amboinicus (Lour.) Spreng (Oreganón): Eryngium foetidum L (Perejil): Coriandrum sativum L (Cilantro): Mentha spicata L. (Hierba buena): Ocimum basilicum L (Albaca) provenientes de huertos familiares de una comunidad indígena de Olcuatitán del municipio de Nacajuca, Tabasco, utilizando el método de difracción de rayos X (DRX) siendo un método exacto y completo para determinar la identidad y estructura de compuestos nuevos o conocidos, y por lo tanto vital para la investigación en química. Usando micro-protones de emisión de rayos X inducida para determinar la composición de las hojas de estas plantas, se detectaron compuestos no reportados previamente como el pirazol y n Poli (trimetilcelulosa) entre otros en las especies estudiadas, estos compuestos pueden ser utilizados para un amplio espectro de fármacos ya que contienen propiedades medicinales y desempeñan un papel importante en las personas, ya que cuentan con una gran fuente de compuestos químicos y bioactivos que favorecen a la nutrición humana.
Extractos de Ipomoea batatas (L.) Lam. y su efecto alelopático sobre arvenses
Authors: Hernández Pérez Ricardo , Olarte Paredes Alfredo , Briones Tellez Brayert Vladimir , Salgado Delgado René , Salgado Delgado Areli , Hernández Aro Maykel
Published: February 2024

Muchos de los metabolitos secundarios que se sintetizan en plantas tiene efectos alelopáticos. Tales aleloquímicos, son excretados por diferentes vías y llegan a estimular, retrasar o inhibir eventos como germinación, crecimiento o desarrollo otras plantas aledañas, fenómeno alelopático que tiene una especial atención en los últimos años, en agroecología, por evidentes propiedades herbicidas. Algunos estudios, han permitido el desarrollo de nuevo bioherbicidas para el control de arvenses, en sustitución de herbicidas sintéticos. El objetivo de estos ensayos fue evaluar el efecto alelopático deextractos acuosos y etanólicos de Ipomoea batatas a diferentes concentraciones (0, 1, 2 y 3.33 %) sobre plantas aceptoras: Amaranthus hypochondriacus y Portulaca olecarea en condiciones controladas, tomando como variables respuesta; la germinación total (GT), índice de velocidad de germinación(IVG) y longitud radicular (LR). Los resultados mostraron que los extractos acuoso pH 7 no tuvieron efecto sobre la germinación de A. hypochondriacus, observándose un ligero retraso en la velocidad de germinación y efecto estimulante en la longitud radicular a concentraciones de 2 y 3.3 %. Cuandose probó el extracto acuoso a pH 5, se evidenció efecto inhibitorio significativo en las tres variables respuesta, lo cual aumentaba con la concentración sobre las aceptoras, siendo más sensible en P. oleracea. Similar resultado se obtuvo con el extracto etanólico, donde el efecto inhibitorio fue dependiente de la concentración y A. hypochindriacus la especiemás sensible hasta llegar a una inhibición del 100 % de la germinación incluso con la dosis más baja.