System implementation: managing project and post project stage - case study in an Indonesian company

The research reported in this paper aims to get a better\ud understanding of how the implementation process of\ud enterprise systems (ES) can be managed, by studying the\ud process from an organisational perspective. A review of\ud the literature on previous research in ES implementation\ud has been carried out and the state of the art of ES\ud implementation research is defined. Using several body of\ud literature, an organisational view on ES implementation is\ud described, explaining that ES implementation involves\ud challenges from triple domain, namely technological\ud challenge, business process related challenge, and\ud organisational challenge. Based on the defined state of the\ud art and the organisational view on ES implementation\ud developed in this research, a research framework is\ud presented, addressing the project as well as the postproject\ud stage, and a number of essential issues within the\ud stages. System alignment, knowledge acquisition, change\ud mobilisation are the essntial issues to be studied in the\ud project stage while institutionalisation effort and\ud continuous improvement facilitation are to be studied in\ud the post-project stage. Case studies in Indonesian\ud companies are used to explain the framework

Experimental and Numerical Studies on Setback Buildings Considering the SSI Effect under Seismic Response

From the previous studies it is observed that due to the effect of the earthquake, several irregular buildings failed vulnerably. Further the effect of sub soil conditions where these buildings have been founded also play an important role on the seismic response of these buildings. In the past, experimental studies on the seismic response of different setback building configurations have not been carried out. Therefore, in the present study the seismic behaviour of setback buildings considering Soil Structure Interaction (SSI) has been evaluated by conducting experimental and numerical investigations. Buildings with various setback configurations were considered and are designed as pile foundation supported structures. The irregularity index of these building configurations have been determined as per the existing codal provisions. These piles supported buildings representing the prototype structure have been scaled down according to geometric, kinematic and dynamic scaling laws. The scaled building models are subjected to vibrations beyond resonant frequencies using shake table facility. A comparison of the results has been made between experimental and numerical investigations. Based on the study it has been observed that storey displacements of building with regular configurations are higher in comparison with the setback buildings. It is also found that asymmetrical and symmetrical setback buildings having different irregularity indices as per IS:1893-2016 indicate nearly the same displacements at resonant frequencies. Doi: 10.28991/cej-2021-03091664 Full Text: PD

Statin therapy and Vitamin D

Background: Statins are well-known drugs used in dyslipidemia and cardiac disorders since several years. Recently, it has been reported that long-term use of statins reduce serum vitamin D level. When statins are administered to patients with low vitamin D more muscular side effects have been reported. On the contrary, a few studies report that statins might increase vitamin D level competing with its metabolism. Hence, this study was conducted to evaluate the association between statins and vitamin D.Methods: 125 participants who fulfilled the selection criteria were enrolled in the study. 65 subjects belonged to control group and 60, statin group. The blood sample was collected for Vitamin D estimation. The results were correlated with a demographic profile, nature of statin and the muscular side effects and compared with control group.Results: The mean vitamin D level in statin group was 15.82 ng/ml±11.51 and 20.57 ng/ml±7.007 in the control group. The difference was found to be statistically significant.  13.85% in the control group and 10% in statin group had sufficient vitamin D level. 18.33% and 36.92 % had insufficient levels and 71.67% and 49.23% had a deficiency in the statin and control groups respectively.  Myalgia was reported by 30 among 60 subjects (50%) in statin group and 5 among 65 subjects (7.69%) in the control group.Conclusion: The present study has shown that statin therapy is associated with low vitamin D level and that this could contribute to the increased incidence of myalgia in the statin group

Functional Outcome and Time Taken for Consolidation in Giant Cell Tumor after Fibular Strut Grafting Based on Intratumor Cavity Volume: A Retrospective and Prospective study

BACKGROUND: Giant cell tumor is one of the commonly encountered bone tumor in the field of orthopaedics. Giant cell tumor represents around 4-5% of all primary bone tumors The neoplasm is most common in the age group of 20 to 40. Nearly 70% of the cases fall within this age group. AIM OF THE STUDY: Aim of the study is to analyse the functional outcome and time taken for consolidation of Giant cell tumor after fibular strut grafting based on intra tumor cavity volume. MATERIAL AND METHODS: In our study 11 patients with tissue diagnosis of gaint cell tumor were included. Of the 11 patients 6 were females and 5 were males all were in the mean average age group of 30 years (18-39), all were treated with curettage and fibular strut grafting with zoledronic acid adjuvant. Before surgery tumor volume was measured using CT or MRI by Ellipsiod volume calculation method .Then post operatively functional outcome and time taken for consolidation of the tumor cavity was analysed using follow up radiographs. RESULTS: The average tumor volume was 92 cm3. The average time taken for consolidation was 18 weeks. Of the 11 patients, 5(100%) patients whose tumor size is less than 92cm3 consolidated within 18 weeks. 6 patients were taken more than 18 weeks, among the 6 patients 4(67%) were consolidated more than 92 cm3. Remaining 2(33%) were less than 92cm3. The chi square values were significant when p is <0.05, which shows that period of consolidation was based on size of the tumor. Conclusion Our study demonstrates that tumor volume of less than 92 cm3 consolidated earlier at an average period of less than 18 weeks. Tumor volume of more than 92 cm3 consolidated after 18 weeks with maximum period of 24 weeks. There was no collapse of the cavity in our serial follow up despite filling the cavity only with fibular strut graft .Neither bone cement nor cancellous bone graft were used. High quality, efficient healing and nil recurrence of Giant cell tumor were achieved after treating with curettage and fibular strut graft with zoledronic acid adjuvant

Sandwich composite of aluminum alloy and magnesium alloy through accumulative roll bonding technique

Aluminum and magnesium alloys are lightweight materials with outstanding technical uses. Due to their combined qualities, composites built of aluminum and magnesium alloys have surpassed the utilization of these elements individually. Accumulative Roll Bonding was used to create a three-layered sandwich composite structure made of Al-alloy/Mg-alloy/Al-alloy. The composite structure's microstructure and mechanical characteristics were studied. A fine-grained AZ31 layer was formed, according to the microstructural study. At the Al-alloy/Mg-alloy contact, a diffusion layer was also seen. On the broken surface, fractography exhibited both ductile and brittle failure characteristics

IMPROVED CORROSION RESISTANCE OF FRICTION STIR ZONE OF RARE EARTH MAGNESIUM ALLOY AE42

Corrosion studies on friction stir welded AE42 magnesium alloy were carried out in 0.1 M ammonium carbonate solution. For better understanding, comparative analysis of corrosion rates was carried out before and after welding. Friction stir weld zone was more corrosion resistant than the parent metal under similar experimental conditions. Grain size was refined at weld zone. Second phase intermetallic particles were refined into tiny pieces of 1-2 micron size and evenly distributed throughout the matrix. Local electrochemical imbalance was eliminated due to the grain refinement and elimination of continuous grain boundary. These phenomena improved the corrosion resistance of weld zone. Scanning electron microscopic images confirmed mild and uniform corrosion of weld zone and rigorous inhomogeneous corrosion of parent metal

Modeling of Overland Flow by the Diffusion Wave Approach

One of the major issues of present times, i.e. water quality degradation and a need for precise answers to transport of pollutants by overland flow, is addressed with special reference to the evaporator pits located adjacent to streams in the oil-producing regions of Eastern Kentucky. The practical shortcomings of the state-of-the-art kinematic wave are discussed and a new mathematical modeling-approach for overland flows using the more comprehensive diffusion wave is attempted as the first step in solving this problem. A Fourier series representation of the solution to the diffusion wave is adopted and found to perform well. The physically justified boundary conditions for steep slopes is considered and both numerical and analytical schemes are developed. The zero-depth-gradient lower condition is used and found to be adequate. The steady state analysis for mild slopes is found to be informative and both analytical and numerical solutions are found. The effect of imposing transients on the steady state solution are considered. Finally the cases for which these techniques can be used are presented

Tribological Performance of the Continuous Steel Fiber-reinforced Cu based Friction Material for Heavy-duty Braking Applications

Brake pads are the major components of the wind turbine, which primarily consists of metal matrix and ceramic reinforcements. The ceramic particles plunge out during the application of brakes, which in turn leads to the transformation of the wear mechanism from adhesive to abrasive wear. This increases the wear rate and therefore the study investigates the possible replacement of ceramic reinforcements with continuous fibers that exhibit high strength and compatibility. In recent years, Cu-based brake pads that are fabricated by powder metallurgy route are widely used in wind turbines. In this study, continuous fibers of stainless steel SS304 are reinforced in the Cu matrix by the casting method to preserve the fiber alignment. The fabricated composite is characterized for microstructure, microhardness, and tribological behavior. Besides, a comprehensive analysis of the wear mechanism in the developed composite is presented based on the surface morphology, elemental composition, and phase analysis