FDM preparation of bio-compatible UHMWPE polymer for artificial implant

Due to its properties of high wear, creep resistance, high stiffness and strength, Ultra-High Molecular Weight Polyethylene (UHMWPE) was developed to eliminate most metallic wear in artificial implant, which conventionally found in stainless steel, Cobalt Chromium (Co-Cr) and Titanium (Ti) alloys. UHMWPE has an ultra-high viscosity that renders continuous melt-state processes including one of the additive manufacturing processes, Fused Deposition Modeling (FDM) ineffective for making UHMWPE implant. Attempt to overcome this problem and adapting this material to FDM is by blending UHMWPE with other polyethylene including High Density Polyethylene (HDPE) and Polyethylene-Glycol (PEG) which provide adequate mechanical properties for biomedical application along with the improvement in extrudability. It was demonstrated that the inclusion of 60% HDPE fraction has improved the flowability of UHMWPE in MFI test and showing adequate thermal stability in TGA

Tracking human movement in office environment using video processing

In this paper, we proposed an approach of multi-person movement tracking in office environment without any identity conflicts. Simple image processing with frame differentiation method is applied to identify multiple human motion. An Expert System is applied to predict next camera occurrence of the tracking human. The main objective of this work is to detect and track multi-human motion using single camera in more than a room in an office

Study of Corossion Potential in Subsoil Resistivity

The degradation of a substance or its qualities as a result of a reaction with the environment is known as corrosion. Corrosion is a natural process that can take place in almost any substance, but it is most commonly linked with metal. The resistivity of the soil is the one variable that has the most significant impact on the pace of corrosion. Metal that is buried in soils with a low resistivity will, in most cases, become anodic, whereas metal that is buried in soils with a high resistivity will, in most cases, become cathodic. In order to prevent and protect the corrosion of buried metallic structures by underground soil, a soil resistivity field study carried out at Merauke District. The results of the research and interpretation of soil resistivity data that have been carried out can be said that the subsoil structure of the three measurements was identified as topsoil, silty soils, sandy soils, and clayey soils. Sandy and clayey soils that have low soil resistivity values between 2.22 – 11.3 Ωm have the potential to be highly corroded. Topsoil which has a high soil resistivity of 590.0 Ωm can pose a danger if the existing mud causes the water content of topsoil to increase

Power Consumption Modeling and Analysis of Integrated Optical-Wireless Access Network

The integration of optical and wireless technologies at access networks are considered as a future solution which provide both high bandwidth and high mobility in an efficient way. GPON is a suitable candidate for optical backhaul due to the combination of higher data rates, greater split ratio and support for triple play services hence it offers maximum flexibility and cost advantages. On the other hand, recent developments of new radio access technologies and introduction of femtocell base stations provide the potential of offering broadband services and applications to everyone and everywhere. However, the power consumption of this network demands a particular attention because access networks are the largest contributor the network related electricity consumption. Therefore, in this paper we evaluate the power consumption of integrated optical-wireless access network which is based on independent ONU-BS architecture. We proposed a power consumption model for such network and the assessment has been done under different simulation scenarios. The constructed model will provide insight of the energy performance of the integrated access network so that in the network design process, focus can be done to the most energy saving strategies

Impact of reciever on time on the energy saving performance of the watchful sleep mode in a passive optical network

Due to increasing bandwidth demands from users, this evolution towards next generation PON (NG-PON) with higher network capacity and split continues. However, increasing split ratio in NGPON also leads to higher power consumption of the PON network due to 60% of the power is being consumed by the optical network units (ONUs). For energy conservation of the ONU, the Watchful Sleep Mode (WSM) has been recently added to the PON standards. This is an integrated mode that combines both the cyclic sleep and doze mode in one operation by periodically turning on the ONU receiver (RX) during the sleep cycle. However, still, the impact of RX on time on the energy saving performance of WSM has not been studied. Therefore, this study presents a performance evaluation of the watchful sleep mode in a 10 GB-capable PON (XG-PON) network with varying RX ON times. The investigation is performed with a dynamic bandwidth assignment scheme and real traffic data from Broadcom CATV head end. A comprehensive review of the power saving techniques for XGPON is also presented. The simulation study results show that higher RX ON time leads to higher energy savings for the ONUs without significantly increasing upstream and downstream delays

Hubungan Amalan Pergudangan Dengan Prestasi Organisasi Pergudangan : Pengenalan Kepada Kerangka Konsep

Pengurus pergudangan meletakkan harapan besar ke atas amalan-amalan yang diamalkan supaya ia dapat menghasilkan prestasi organisasi yang membanggakan. Kajian mengenai amalan pergudangan dan hubungannya dengan prestasi organisasi kurang diberikan tumpuan padahal permintaan ke atas sektor pergudangan adalah kedua tertinggi selepas pengangkutan dalam industri 3PLs. Oleh itu, kerangka konsep yang diperkenalkan ini sedikit sebanyak dapat membantu memperbanyakkan kajian dalam sektor pergudangan.Dengan menjadikan teori RBV sebagai asas untuk kepada pembangunan kerangka konsep mengenai hubungan amalan pergudangan dengan prestasi organisasi pergudangan amat bertepatan sekali kerana teori tersebut menyokong konsep hubungan sumber-sumber organisasi dengan prestasi. Sumber-sumber organisasi seperti sumber manusia, teknologi maklumat, material pengendalian dan jaringan telah dicadangkan dalam kerangka konsep untuk diuji bagi melihat hubungannya dengan prestasi organisasi. Kerangka konsep ini amat sesuai untuk diuji ke atas syarikat yang menjadikan perkhidmatan pergudangan sebagai teras perniagaan mereka.disebabkan survival perniagaan syarikat ini amat bergantung kepada amalan dan prestasi

Keterampilan Metakognisi melalui Project Based Learning pada Materi Reproduksi SMA

Penelitian bertujuan menghitung keterampilan metakognisi pada PJBL di materi reproduksi. Parsitipant berjumlah 60 orang di kelas 10 SMA. Pengukuran keterampilan metakogisi menggunakan metacognition awarenes invention sebelum dan sesudah menggunakan PJBL di kelas kontrol dan perlakuan. Analisis keterampilan metakognisi dilakukan setiap individu berdasarkan skor kognitif dan keterampilan metakognisi di sub topik pertama dan terakhir materi reproduksi SMA. Hasil penelitian menunjukan: 1. Keterampilan metakognisi peserta didik ditemukan antara 13,33% - 20% belum begitu berkembang dan 80%-87,665% masih belum berkembang; 2. Keterampilan metakognsi peserta didik di kelas perlakuan menunjukan 13.33% belum begitu berkembang dan 86,67% masih belum begitu berkembang, sedangkan metakognisi siswa di kelas kontrol 80% masih belum berkembang dan 20% belum begitu berkembang. Persentase keterampilan metakognisi masih belum berkembang menurun sedangkan persentase belum begitu berkembang meningkat melalui PJBL, sehingga metode dan teknik di setiap tahap pembelajaran PJBL perlu pengkajian yang lebih memfokuskan pada pengembangan keterampilan metakognisi yang lebih baik

Assessment of Road Network Connectivity in Support of New Capital Development

The shifting of the capital of Indonesia from Jakarta to East Kalimantan, or East Borneo, is underway. There are certain to be new issues that arise as a result of this migration. The state of the nation's current transportation infrastructure is one of the most prominent right now. The new capital of Indonesia, Jakarta, is situated in the midst of a jungle. For this reason, the road network should be established before, or at least concurrently with, the IKN construction. It is critical to understand the direction of future growth in the IKN region before developing a road network architecture. Potential partner locations might potentially benefit from enhanced access and connection to the existing road network in this situation as well. To ensure that the IKN is able to work properly and link additional nodes, many partner area points are being considered. A literature review, a focus group discussion, and in-depth interviews were conducted to come up with a development plan for IKN partner regions and highlight areas of special concern. It was also determined if the addition of a new node had a positive impact by utilizing a connection matrix and the accessibility index. Most linkages are found at five of the 26 nodes in the complete connectivity matrix of national highways around IKN in East Kalimantan. Node 3 and Node 7 are the most accessible and easy-to-access component nodes of the road network, compared to other nodes. Doi: 10.28991/CEJ-2022-08-10-011 Full Text: PD