Robust active heave compensated winch-driven overhead crane system for load transfer in marine operation

Active heave compensation (AHC) is important for load transfer in marine operation using the overhead crane system (OCS). The control of marine OCS aims to continuously regulate the displacement of the cart and the payload sway angle, whilst at the same time, maintaining the gap between the payload and the vessel main deck at a desirable and safe distance. As the marine OHC system is to be operated in a continuously changing environment, with plenty inevitable disturbances and undesirable loads, a robust controller, i.e., active force control (AFC) is thus greatly needed to promote accuracy and robustness features into the controllability of OCS in rough working environment. This paper highlights a novel method for controlling the payload in an OCS based on the combination of both AFC and AHC. Results from the simulation study clearly indicate that the performance of OCS can be greatly improved by the proposed robust AFC controller, as compared with the classical PID controller scheme

Peningkatan Hasil Belajar Matematika melalui Model Pembelajaran Kooperatif Tipe Make A-Match pada Murid Kelas V

. This study aims to determine the improvement of student learning outcomes in mathematics learning through cooperative learning model type make-match in fifth grade students of SD Negeri 3 Wettee, Panca Lautang District, Sidenreng Rappang District. The approach used in this study is qualitative with the Classroom Action Research (Classrom Actioan Research) design. This research was carried out using two variables; that is; Cooperative Learning Model Make A-Match Type and learning outcomes. The subjects in this study were teachers and fifth grade students of SD Negeri 3 Wettee as many as 15 students consisting of 11 male students and 4 female students. Data collection techniques used in this study were observation, tests, and documentation. The data obtained through observations will be analyzed qualitatively. While the learning outcomes obtained by students will be analyzed quantitatively then described systematically so that a conclusion can be obtained. The results showed that the use of the type of cooperative learning model make a-match can improve the mathematics learning outcomes of fifth grade students at SD Negeri 3 Wettee. In addition, the use of the make-a-match cooperative learning model can also increase the activity of students in taking mathematics lessons through collaborative activities in groups

Usulan Perbaikan Fasilitas Kerja Yang Ergonomis Pada Stasiun Perakitan Cover Assy 24dc (Studi Kasus PT. Sanwa Engineering Batam)

PT. Sanwa Enginering Batam merupakan Perusahaan yang bergerak dalam bidang Molding dan Perakitan . Perusahan ini berlokasi dikawasan industry Batamindo. Berdasarkan hasil penelitian yang dilakukan distasiun perakitan cover assy 24DC, terdapat keluhan yang sering dialami operator, yaitu rasa sakit dan nyeri pada punggung dan kaki. Hal ini dikarenakan adanya fasilitas kerja yang tidak ergonomis distasiun tersebut, sehingga menimbulkan rasa sakit dan nyeri dibeberapa anggota tubuh.Penelitian bertujuan untuk melakukan perbaikan fasilitas kerja yang ergonomis berdasarkan prinsip –prinsip antropometri, sehingga dapat memberikan kepuasan kepada Perusahaan, karena dalam penelitian ini Perusahaan dapat mengetahui fasilitas kerja yang seharusnya dipakai, sehingga dapat mengurangi keluhan rasa sakit angdi alami operator.Penelitian dilakukan pada stasiun cover assy 24DC sebagai pembatasan masalah dari penelitian. Model penelitian yang digunakan adalah penelitian kuantitatif yang mana dituntut untuk menggunakan angka mulai dari pengumpulan dan pengolahan data sampai pada pembahasan. Data yang digunakan untuk usulan fasilitas berdasarkan hasil pengukuran lansung, dan data yang diambil hanya lah data yang diperlukan dalam melakukan perbaikan fasilitas. Kmemudian data yang telah didapatkan akan diolah dengan mencari nilai rata - rata, standar deviasi, selanjutnya data tersebut akan diuji keseragaman dan kecukupanya dan mencari nilai persentilnya.Hasil akhir yang didapat pada penelitian ini adalah usulan perbaikan fasilitas kerja yang dapat mengurangi keluhan rasa sakit operator distasiun perakitan cover assy 24DC

Isolates of Some Rotting Fruits Collected at Yankaba Market, Kano, Nigeria

Studies on fungi isolates were carried out over a period of 4 weeks with different rotting fruits that were collected from sellers in Yankaba market, Kano. The fruits are sweet orange, apple, pineapple, watermelon, banana, pawpaw, coconut and wild bush mango were collected in clean sterile polythene bags separately. Each of the samples was cultured and isolated at room temperature (370C). Materials used in culturing included Petri-dishes with potato dextrose agar as the media. Methylene blue was used in mounting and slide staining. It took a period of 7 days to incubate and isolate the fungi namely Aspergillus spp., Sclerotium spp., Trichoderma spp., Gloeosporium spp., Rhizopus spp. and Rhizoctonia spp. were responsible for post-harvest deterioration of fresh fruits and vegetables. Rhizopus spp. had the highest frequency of occurrence

User friendly system for the visually impaired in learning Al-Quran

This study presents a method to enable the visually impaired Muslim to learn and read the Al-Quran using Braille Display with software help. The system reads the database which contains all verses of Al-Quran and user will need to select the verse and ayah to read. Besides that, this system can be used in a class to teach visually impaired students to learn Al-Quran. Every word or character typed by the instructor in the main Braille Panel will be transmitted to the sub Braille Panel that is connected to the main Braille Panel. The selected verse of Al-Quran and ayah will also generate an index before being transmitted to the Braille Panel. The index will be transmitted to the Braille Display for people to touch and read the display. A user friendly Graphical User Interface (GUI) will be used to fulfill the ergonomics for the visually impaired user's physical capabilities. Several approaches are used to design and implement the interface for the visually impaired like speech or sound output and Braille display. The Braille codes can be displayed using the Braille panel. The design interface and structure of the system for the visually impaired users in learning Al-Quran is presented