Green Human Resource Management Bibliometric Analysis of the Published Literature from 2008 to 2022

Purpose:  The rising amount of research being done in the realm of environmental protection has resulted in the establishment of a new research paradigm in the field of human resource administration (HRA) called green human resource management" (GHRM). The current study was conducted to highlight the work been done in the field of GHRM and provide a pictorial view to the readers to understand the effectiveness of GHRM in various organizations.   Theoretical framework:  This paper provides an explanation of the development of literature and makes it possible to comprehend the topics that have been investigated in previous works of literature regarding GHRM.   Design/methodology/approach:  The Scopus core-collection and VOS-viewer were utilized in the writing of this paper. For the purpose of the study, each and every GHRM related document that will already exist within the database between 2008 till 2022 will be analyzed. The display of the data via graphical visualization incorporates both bibliographic coupling and co-citation features into the presentation.   Findings:  It was discovered that 418 documents on the GHRM scholarship were evaluated in this bibliometric investigation. The purpose of this study was to examine the volume, rising tendency, worldwide distribution, major journals, pioneer authors, dominant countries, and dominant industries in the field of global human resource management. With the use of logical operators, six different word combinations were combined to create the final product, “TITLE-ABS-KEY ("green human resource management" OR "green hr" OR "green human resource" OR " green human resource practices" OR "GHRM" OR "GHRMP")”, thus, the range grows wider. In the review, it was found that the GHRM is still a new idea. This review is meant to help modern researchers by giving them an overview of the current state of things.   Research, Practical & Social implications:  A more thorough and objective knowledge structure evolution framework for the period 2008 to 2022 is provided by this research, which is useful to the evolution of the Human Resource Management field.   Originality/value:  We have added a global perspective to our understanding of the concept's evolution across time by weaving together bibliographic information and network diagrams in this paper

Numerical modeling and analysis of flow around stationary and oscillating circular cylinder / Niaz Bahadur Khan

The fluid–structure interaction problems associated between cylinder and fluid has gained considerable attention because of its importance in a wide range of applications including marine equipment, nuclear reactors, skyscrapers, bridges, wind turbines and chimneys. When a flow passes through a circular cylinder, vortex shedding would occur behind the cylinder alternately at the top and bottom sides resulting in an unwanted structural vibration, especially when the frequency of vortex shedding is equal to or near to the natural frequency of the structure. This phenomenon is known as a vortex-induced vibration (VIV). Despite the wide range of research on flow around cylinder at Reynolds number 3900, the study of mesh density in spanwise direction, use of cost effective turbulent model and impact of mesh pattern on flow around cylinder problems is limited. Flow around fixed cylinder provide basis for the VIV problem which is associated with oscillating cylinder case. The main objective of this study is to numerically investigate the unsteady nature of the flow around cylinder using computational fluid dynamics. This study is divided into two parts: fixed cylinder case and oscillating cylinder case. The first section analysed the effects of the spanwise domain, the spanwise mesh resolution and mesh resolution near-field grid on the recirculation length, the angle of separation and hydrodynamic coefficients. The effects of non-dimensional timestep and time statistic average on the accuracy of the statistical quantities are also investigated. In the first section, extensive numerical simulations have been performed using large eddy simulation (LES) code and Smagorinksy–Lilly SGS models to investigate the unsteady nature of the flow around a fixed cylinder at a Reynolds number (Re)=3900. Meshing and analysis are performed using ICEM-CFD and an ANSYS-fluent tool, respectively. The second section mainly focused on the VIV phenomenon for elastically mounted rigid cylinders. The objective of this section is to test the capability and accuracy of 2D and 3D RANS models to compute the maximum amplitude, the mode of vortex, and other hydrodynamic coefficients, and compare the performance of these models to that of computationally expensive models. In addition, the performance and capability of SST-kω is compared with realizable-kε (RKE) equations. In this study, a user-defined function code written in C language is used to facilitate the oscillation of the cylinder and record the fluid forces with the amplitude of the cylinder through dynamic mesh update method. Several important results are obtained in this study. For the fixed cylinder, the mesh density in the spanwise domain and near-field grids significantly affect the calculation of the recirculation length, the angle of separation, the hydrodynamic coefficients and the statistic in the wake region behind the cylinder. In addition, the recirculation length is observed to be a key parameter for assessing the accuracy of the numerical method. For the oscillating cylinder, the 2D RANS SST k-ω turbulent model, which is relatively less expensive, can predict the hydrodynamic forces, the maximum amplitude and all modes of the vortex at Re=104. In the RKE model, a delayed transition is observed between the upper and lower branches, resulting in the broad range of the ‘lock-in’ region. With very small mass-damping ratio, the 2D RANS SST k-ω turbulent model successfully predicted the maximum amplitude during the VIV analysis. The findings of this study significantly reduced the computational cost for the flow around fixed and oscillating cylinders

VIV study of an elastically mounted cylinder having low mass-damping ratio using RANS model

This study addresses vortex-induced vibration analysis by an elastic rigid cylinder oscillating free in cross flow direction subject to low mass damping ratio. Two-dimensional Reynold-Averaged Navier-Stokes equations (RAN) for this purpose are simulated. Analysis is carried out for range of reduced velocity = 2–16 which corresponds to Reynolds number 1700–14,000. The mass-ratio is 2.4 and mass-damping ratio 0.0013. Previously, similar studies have been performed numerically but are limited to achieve maximum cylinder response. In the current study, comparatively higher value of maximum amplitude of cylinder is computed. However delay in transition from ‘upper branch’ to ‘lower branch’ is noticed. In addition to maximum amplitude, other hydrodynamic coefficients are also discussed. The results extracted from current simulations are compared with previous experimental studies in literature

Seismic isolation retrofitting solution for an existing steel cable-stayed bridge.

This paper investigated the seismic retrofitting of an existing cable-stayed bridge through the use of a seismic isolation system. The bridge is situated in a high seismic zone. During the Saguenay earthquake 1988, one of the anchorage plates of the bridge supports failed. Herein, several configurations of seismic isolation system were considered to identify an appropriate solution for the seismic retrofitting of the bridge in both the longitudinal and transverse directions. A three-dimensional model of the bridge was created, and its seismic behavior studied through nonlinear dynamic time-history analysis. The comparative performance study among the five retrofitting configurations showed that the partial seismic isolation of the bridge led to an enhancement of the seismic response of the bridge in one direction only. However, the overall seismic response of the cable-stayed bridge substantially improved in the longitudinal and transverse directions in cases where the isolation systems were utilized between the supports and the deck-tower connection of the bridge

Investigation of tendon dynamics effects on tension leg platform response in random seas

This study investigated tendon dynamics effects of tension leg platform models with tendons modelled by finite element spring and beam elements for uncoupled and coupled tension leg platform in random waves and current environment. The purpose of the study is to proffering numerical solution of single mathematical equation of motion for fully integrated-coupled tension leg platform floater with tendons model. Structural modelling of complete tension leg platform is achieved with the help of ABAQUS/Standard finite element tools which is incorporated with ABAQUS/Aqua module for the application of hydrodynamic loadings on the partially submerged tension leg platform hull and fully submerged platform tendons. For the uncoupled tension leg platform model, weight, inertia, hydrodynamic force and damping forces are ignored on the tendons modelled with springs, while the stiffness of the tendons is considered as a static restoring force. The coupled tension leg platform model had all the forces applied on the tendons modelled with beam elements. Conclusively, modelling and analysis of the tension leg platform as uncoupled and coupled models have expanded our understanding to know that surge motion response is fairly predicted by the two models, however, heave and pitch motions, and variations in tendon tension differ significantly; hence, coupled tension leg platform model is recommended. The influence of a removed tendon due to accident or maintenance on the tension leg platform motions is also reported. © IMechE 2018

Axisymmetric flow of Casson fluid by a swirling cylinder

The present communication aims to investigate the influence of heat generation/absorption on axisymmetric Casson liquid flow over a stretched cylinder. Flow is caused due to torsional motion of cylinder. The governing physical problem is modelled and transferred into set of coupled nonlinear ordinary differential equations. These equations are solved numerically using built-in-Shooting method. Influence of sundry variables on the swirling velocity, temperature, coefficient of skin friction and heat transfer rate are computed and analyzed in a physical manner. Magnitude of axial skin friction is enhances for larger Reynold number and magnetic parameter while local Nusselt number decays with the enhancement of Casson parameter, heat generation/absorption and magnetic parameter. Comparison with already existing results is also given in the limiting case

Flexural behaviour of steel hollow sections filled with concrete that contains OPBC as coarse aggregate

Oil-palm-boiler clinker (OPBC) is an agricultural waste from the palm oil industry and is considered a serious threat to the environment. Moreover, the high consumption of concrete as a construction material results in a continuous demand for natural aggregates, thereby negatively affecting the environment. Thus, channeling OPBC waste materials into the concrete industry aids in promoting the use of a sustainable and lightweight member. This research presents a novel sustainable composite beam that uses an OPBC as a replacement of the natural coarse aggregate. Flexural behaviour of steel tubes infilled with conventional and OPBC concretes were investigated. The results showed that the ductility, flexural stiffness and structural efficiency were higher in the OPBC concrete filled steel tube (CFST) than conventional CFST by 15%, 12% and 20%, respectively. Furthermore, in comparison to conventional CFST, the 10% less self-weight in OPBC CFST will significantly reduce the construction cost of the material. Conclusively, the utilisation of OPBC as infill material for CFSTs will solve disposal problem, preserve natural resources, reduce environmental pollution and will make the structural system sustainable

Experimental investigation of effect of welding parameters on surface roughness, micro-hardness and tensile strength of AISI 316L stainless steel welded joints using 308L filler material by TIG welding

Tungsten inert gas (TIG) welding is type of arc welding with area of applications in food industry, pharmaceutical industry, chemical plants, marine, aerospace, medical devices, and implants, etc. TIG welding process involve several parameters. Many parameters are controllable by the operator, and these parameters have a direct or indirect impact on the microstructure and mechanical properties of the joints. In the present study, three TIG welding parameters, arc current, voltage, and shielding gas flow rate, were changed up to three levels and their effects on surface roughness, hardness and tensile strength were investigated. Experiments were carried out on a 3 mm thick plate of austenitic stainless steel AISI 316L utilizing a TIG welding equipment and were designed according to Taguchi L9 orthogonal array (OA). ER308L was used as filler material. Results were analyzed using signal to noise S/N ratio and analysis of variance. It was observed that, for optimization of each response, arc current is the most influential factor. Minimum surface roughness was achieved at parametric combination of current 125 A, voltage 18 V and gas flow rate 12 L/min. Maximum hardness was achieved at parametric combination of current 125 A, voltage 20 V and gas flow rate 9 L/min. Maximum tensile strength was achieved at parametric combination of current 100 A, voltage 18 V and gas flow rate 6 L/min

Experimental and numerical study of flexural behavior of novel oil palm concrete filled steel tube exposed to elevated temperature

Oil palm boiler clinker (OPB) is a waste byproduct obtained at elevated temperature in an oil palm processing mill. Moreover, in recent years, Concrete filled steel tube (CFST) has been used widely in structures throughout the world. This paper presents an experimental and numerical study on novel sustainable composite beam by using OPB as replacement of natural coarse aggregate in CFSTs. Steel hollow beams (3.2 m length) infilled with natural aggregate concrete and OPB concrete were subjected to flexural load and elevated temperature. The parameters selected for the experimental tests were the cross-section type (square, rectangular) and the infilling type (natural aggregate concrete and OPB concrete). The thermal response, failure modes, critical temperature, temperature distribution in steel tube and infilled concrete, deflection along the span and fire concrete contribution ratio were evaluated. The critical temperature and fire concrete contribution ratio of OPB CFST was found to be higher than natural aggregate CFST, showing superior performance of OPB CFST. Thereafter, simulations were performed and more than 50 models were analyzed to evaluate the effect of yield strength of steel (235–400 MPa), compressive strength of infilled concrete (30–75 MPa), load ratio (0.3–0.6), width-to-depth ratio (2–0.5) and steel ratio (4.4%–2.1%) on the fire resistance time of CFST beam. It was found that the increase in load ratio, steel ratio and yield strength of steel has adverse effected on the fire resistance (FR) time of CFST member. However, the FR time increased significantly with an increase in compressive strength of infilled concrete and cross-sectional dimension of CFST member. Finally, the experimental results were compared with existing equations for CFST columns filled with natural aggregate concrete. It was found that current equations may underestimate the fire resistance of CFST filled with OPB