Silver Nanoclusters And Nanofractals In Natural Rubber Matrix.

Silver nanocrystals were synthesized in natural rubber matrix via UV irradiation technique. A high intensity UV light with a wavelength below 300 nm was used to reduce the silver ions in the natural rubber matrix

Meningkatkan Kemampuan Berbicara Anak Melaui Media Boneka Tangan Pada Anak Usia 5-6 Tahun Kelas B2 di TK Asoka Makassar

Penelitian ini bertujuan untuk meningkatkan keterampilan berbicara dengan menggunakan metode bercerita dengan boneka tangan pada anak Kelompok B2 TK Asoka Makassar Tahun Ajaran 2022/2023. Media boneka tangan dipilih karena pada dasarnya anak senang mendengarkan cerita. Jenis penelitian ini adalah Penelitian Tindakan Kelas kolaboratif menggunakan model penelitian Kemmis dan Mc Taggart. Subjek penelitian adalah 20 anak Kelas B2 usian 5-6 tahun Di Tk- TK Asoka Makassar. Penelitian ini dilakukan di kelas B2 TK TK Asoka Makassar pada semester 1, Tahun ajaran 2022/2023 dengan jumlah siswa 20 orang penelitian tindakan kelas B2 ini dilaksanakan 2 siklus karena pada siklus 1 tindakan ke I 11,4% Tindakan ke II 83,8% keberhasilan yang dicapai adalah 10 siswa 50 % dari 20 siswa yang dikategorikan tuntas sedangkan 7 siswa 35% dikategorikan tidak tuntas. sehingga dilanjutkan pada siklus II, pada proses pembelajaran siklus II Tindakan I 24,4%, Tindakan II 72,4%, sudah ada peningkatan dibanding siklus I pada siklus II ini siswa yang mencapai tingkat ketunasan adalah 15 siswa atau 85% yang dikategorikan tuntas sedangkan siswa yang tidak tuntas adalah 5 siswa atau 15,%

Electrical and Thermal Behavior of Copper-Epoxy Nanocomposites Prepared via Aqueous to Organic Phase Transfer Technique

The preparation, electrical, and thermal behaviors of copper-epoxy nanocomposites are described. Cetyltrimethylammonium bromide- (CTAB-) stabilized copper (Cu) particles were synthesized via phase transfer technique. Isopropanol (IPA), sodium borohydride (NaBH4), and toluene solution of diglycidyl ether of bisphenol A (DGEBA) were used as transferring, reducing agent, and the organic phase, respectively. The UV-Vis absorbance spectra of all the sols prepared indicate that the presence of Cu particles with the particles transfer efficiency is ≥97%. The amount, size, and size distribution of particles in the organosol were dependent on the content of organic solute in the organosol. The composites were obtained upon drying the organosols and these were then subjected to further studies on the curing, thermal, and electrical characteristic. The presence of Cu fillers does not significantly affect the completeness of the composite curing process and only slightly reduce the thermal stability of the composites that is >300◦C. The highest conductivity value of the composites obtained is 3.06 × 10−2 S cm−1

Development of PAN (personal area network) for Mobile Robot Using Bluetooth Transceiver

In recent years, wireless applications using radio frequency (RF) have been rapidly evolving in personal computing and communications devices. Bluetooth technology was created to replace the cables used on mobile devices. Bluetooth is an open specification and encompasses a simple low-cost, low power solution for integration into devices. This research work aim was to provide a PAN (personal area network) for computer based mobile robot that supports real-time control of four mobile robots from a host mobile robot. With ad hoc topology, mobile robots may request and establish a connection when it is within the range or terminated the connection when it leaves the area. A system that contains both hardware and software is designed to enable the robots to participate in multi-agent robotics system (MARS). Computer based mobile robot provide operating system that enabled development of wireless connection via IP address

Preliminary analysis of “The Effectiveness of using Virtual Reality approach in Electromagnetic Theory Subject Courseware” in MTUN.

This paper is about the study of applying a virtual reality approaches on studying electromagnetic theory. It will examine the effectiveness of this approach in the field of education as some subject need high imagination to understand. This topic has cover about the surface of 3D environment and the usage plus the impact of the virtual reality approaches in this project. It also explains about the problem that has been found until the development of the courseware with virtual reality approach. This project focus for students and lecturers guideline, and will exposed them to the used of ICT and multimedia tool in learning as one of the teaching tool. Data have been collected by using questionnaire method, which four Malaysia technical universities have been chosen to prove that Electromagnetic Theory (EMT) subject is the hardest subject in engineering field as it is the fundamental subject for future engineer. At first, 16 objectives question have been given to 10% student those have took the subject before for each universities. These questions are to test their understanding about EMT subject, as before they were using traditional approach in their study. All questions are from four subtopic in the EMT subject, which are Vector calculus, Electrostatic, Magnetostatic, and Wave application. Each subtopic contains four questions. Then analysis have been done to check the most hardest subtopic so that it will be chosen as a main subtopic that will be focus on, which 3D and Virtual reality approach will be applied on it. It is believe that the effectiveness of these approaches can be seen if the method applies in the hardest part gives positives results. Not only survey on students have been done, but also to the lecturer’s and as a same method, 10 % of survey from lecturers that teach EMT subject in all Malaysia Technical Universities have been taken, and analysis have been done, as a result most lecturers agreed if 3D and Virtual reality approaches applied in studying the subject to make students easily understand about the subject as this subject need high imagination. This paper presents a summary of the experimental assessment process and findings regarding the educational value of the multimedia courseware with three dimensional and virtual reality approaches applied

PENINGKATAN KEMAMPUAN BERBICARA MELALUI PENGGUNAAN MEDIA GAMBAR SERI PADA SISWA KELAS III SD INPRES PALLANGGA KABUPATEN GOWA

Tujuan penelitian ini adalah meningkatkan kemampuan berbicara murid kelas III SD Inpres Pallangga melalui penggunaaan media gambar seri. Penelitian ini adalah penelitian tindakan kelas (Classroom Action Research) yang bertujuan untuk meningkatkan kemampuan berbicara siswa kelas III SD. Inpres Pallangga melalui penggunaan media gambar seri. Subjek penelitian ini adalah siswa kelas III SD. Inpres Pallangga Kecamatan Pallangga Kabupaten Gowa dengan jamlah siswa 30 orang yang terdiri dari 18 orang siswa perempuan dan 12 orang siswa laki-laki. Penelitian ini dilakukan dalam dua siklus yaitu siklus I dilakukan 2 kali pertemuan dan siklus II juga dilakukan 2 kali pertemuan, yang dilakukan selama 2 bulan dan ditambah dengan merangkum semua hasil penelitian yang ada. Teknik pengumpulan data yang digunakan adalah data kualitatif dan kuantitatif.          Hasil temuan dalam penelitian ini adalah bahwa hubungan peningkatan kemampuan berbicara siswa kelas III SD. Inpres Pallangga melalui penggunaan media gambar seri adalah: 1) Tingkat kemampuan berbicara siswa kelas III SD.  Inpres Pallangga pada siklus I (Tindakan I-Tindakan II), masuk dalam kategori rendah dengan jumlah nilai rata-rata 54,9 sedangkan pada siklus II (Tindakan I-Tindakan II), mengalami kemajuan dengan kategori tinggi dengan nilai rata-rata 75,2. 2) Terdapat peningkatan kemampuan berbicara siswa kelas III SD. Inpres Pallangga melalui penggunaan media gambar seri, baik secara kualitatif maupun kuantitatif,. Hal tersebut dapat dilihat pada tabel dan penjelasan pada lampiran, pada siklus I dan siklus II pada setiap tindakan mulai dari tindakan I sampai tindakan II. Berdasarkan hasil penelitian tersebut, maka dapat disimpulkan bahwa kemampuan berbicara dapat ditingkatkan melalui penggunaan gambar ser

Automated pH Regulator For Freshwater Prawn With Analog pH Meter Pro

In Malaysia, farmers faced the problems of prawn diseases which cause billions of USD in damage, along with the loss of prawn production. Farmers begin to wipe out from the prawn industry and investors are unwilling to finance prawn production. There will be a risk that it will decrease the productivity of Malaysia's prawn production due to the prawn affected by diseases. Research shows that an uncontrolled pH level in the prawn tank causes the prawn to be stressed and lower the prawn immunity system. As a result, diseases such as Early Mortality Syndrome (EMS), White Spot Syndrome Virus (WSSV), and Taura syndrome virus (TSV) can easily attack the prawn.  The existing water quality monitoring system lacks a complete solution from monitoring the pH level until autonomous remedial action is taken to control the pH level. When developing the system, no autonomous remedial action being taken to control when the pH level is out of range. Automated pH Regulator For Freshwater Prawn with Analog pH Meter Pro help farmers to monitor and control pH level in prawn tank. Logged data is stored in a personal computer for reference to prawn health. This paper proposes a conceptual framework with three (3) stages that consist of monitoring pH level with threshold data to determine pH level, provide autonomous remedial action to control the pH level in prawn tank, and logged data into a personal computer for reference. By having an Automated pH Regulator For Freshwater Prawn with Analog pH Meter Pro, immediate action can be carried out to save the prawn's life from diseases

Corporate Identity Management (CIM) Model in Malaysian Higher Education Sector: Literature Review and Hypothesis Development

Corporate Identity Management (CIM) in universities has been acknowledged in marketing literature as an important area of research. Research within the current spectrum of CIM indicates some ambiguities surrounding corporate identity in higher education. However, very few studies are available in the field of corporate identity within universities. Accordingly, the objective of this study is to examine the relationships between university’s CIM and organizational performance, and also identify the relevant underlying mechanisms in Malaysian higher-education sector. Based on a review of the existing literature in a range of areas, this study proposes a conceptual model of the positive relationships between CIM activities in universities with internal brand, transformational leadership and organisational culture. The proposed conceptual model is developed based on three main theories--social identification theory, transformational leadership theory and social learning theory

A decentralized proportional-integral sliding mode tracking controller for a 2 D.O.F robot arm

Trajectory tracking with high accuracy is a very challenging topic in direct drive robot control. This is due to the nonlinearities and input couplings present in the dynamics of the arm. This paper deals with the tracking control of a class of direct-drive robot manipulators. A robust Proportional-Integral (PI) sliding mode control law is derived so that the robot trajectory tracks a desired trajectory as closely as possible despite the highly non-linear and coupled dynamics. The controller is designed using the decentralized approaches. Application to a two degree of freedom direct drive robot arm is considered