Penggunaan Media Nec Projector dalam Meningkatkan Aktivitas Pembelajaran Tematik Siswa Kelas V Semester 1 Min Kilongan Kabupaten Banggai

Penggunaan Media Nec Projector dalam Meningkatkan Aktivitas Pembelajaran Tematik Siswa Kelas V Semester 1 MIN Kilongan Kabupaten Banggai. Karya Tulis Inovasi Teknologi dalam Pembelajaran.Tujuan penelitian ini untuk meningkatkan aktivitas dan hasil belajar siswa dalam pembelajaran tematik dengan menggunakan media Nec Projektor yang dilakukan di kelas V semester 1 MIN Kilongan Kabupaten Banggai dengan 2 kali pertemuan. Dengan menggunakan metode penelitian tindakan kelas. Hasil observasi aktivitas siswa menunjukkan peningkatan yaitu 75,70% pada pertemuan pertama menjadi 90,5% pada pada pertemuan kedua. Sedangkan hasil belajar siswa menunjukkan peningkatan dari 68,89% pada pertemuan pertama kemudian meningkat lagi menjadi 82.44% pada pertemuan kedua. Dengan demikian karya inovasi teknologi dalam pembelajaran tematik menggunakan media Nec Projektor dapat meningkatkan aktivitas dan hasil belajar siswa kelas V semester 1 MIN Kilongan

Model Vektor Tegangan Dalam Modulasi Vektor Ruang 3-dimensi Pada Filter Aktif Sistem Tiga-fasa

Anelectric current flow on the neutral wire give raise to harmonics. It is a problem that must be solved one of which is space vector modulation technique. A few voltage vector models have been developed including by Zhang and Perales. In this paper the models are compared to determine reference voltage vector and duty cycle, developed asymmetric's model based on Akagi theory too. The results show that asymmetric's model can be proposed as a new technique in space vector modulation.Arus yang mengalir pada kawat netral menimbulkan harmonisa. Hal itu merupakan masalah yang harus diselesaikan salah satunya adalah dengan teknik modulasi vektor ruang. Beberapa model vektor tegangan telah dikembangkan diantaranya oleh Zhang dan Perales. Dalam tulisan ini dibandingkan model-model tersebut dalam menentukan vektor-tegangan referensi dan duty cycle. Dikembangkan pula model asimetri yang berdasarkan pada teori Akagi. Hasilnya menunjukkan bahwa model asimetri dapat diusulkan sebagai satu teknik baru dalam modulasi vektor ruang

Peningkatan Efisiensi Pembangkit Listrik Tenaga Surya Dengan Reflektor Parabola

This paper present the result of reserch on improving the solar power plant efficiency using two parabolic reflectors. The designed parabolic reflectors are asymmetrical concentrators placed on a horizontal surface so that radiation from each angle can be collected. Two monocrystalline solar modules, each with 0.639 m length and 0.294 m width are used, which can produce 20.124 W maximum power, 1.3 A short circuit current, and 21.2 V open circuit voltage on 1000 W/m2 solar irradiation and 25 °C temperature. The solar module itself has 10.71% efficiency which is used as the reference efficiency. A solar module with parabolic reflectors can produce 11.13% average efficiency or 1.039 times higher than the reference efficiency. The whole system with two solar modules and parabolic reflectors can produce 13.111 W maximum power and 11.92% highest efficiency or 1.113 times higher than the reference efficiency. Makalah ini merupakan hasil penelitian tentang peningkatan efisiensi pembangkit listrik tenaga surya dengan reflektor parabola. Reflektor parabola yang dirancang berupa konsentrator asimetris yang ditempatkan pada permukaan horizontal agar radiasi dari setiap sudut dapat dikumpulkan. Dua modul surya yang digunakan dari jenis monokristal masing-masing berukuran panjang 0,639 m dan lebar 0,294 m dapat menghasilkan daya maksimum 20,124 W, arus hubung singkat 1,3 A, dan tegangan terbuka 21,2 V pada iradiasi matahari 1000 W/m2 dan temperatur 25 °C. Modul surya sendiri memiliki efisiensi referensi sebesar 10,71 %. Satu modul surya dengan reflektor parabola dapat menghasilkan efisiensi rata-rata 11,13 % atau 1,039 kali lebih tinggi dibandingkan efisiensi referensi. Keseluruhan sistem pembangkit dengan dua modul surya dan reflektor parabola dapat menghasilkan daya maksimum 13,111 W dan efisiensi tertinggi sebesar 11,92 % atau 1,113 kali lebih tinggi dibandingkan efisiensi referensi

Evaluating the use of Drones in the area of Transportation/Construction

Drones are proving out as a valuable tool and growing quickly in the world of technological advances. The applications of these vehicles are spreading widely in the areas of remote sensing, real time monitoring, goods delivery, security, defense, surveillance, infrastructure inspection. Although, the intent behind creating this tool was remote sensing. Smart drones will be the next big innovation and modification, which would have much wider applications especially in the field of infrastructure where it can reduce risks and lower costs. Current direct evaluation techniques are tedious, and the information caught is frequently not led in a precise manner with the areas tested not being geographically correct and the resulting reports being delivered past the point of no return. These were the reasons, which have increased the demand and usage of unmanned vehicles. In this research paper, we present critical review of main advancements of Drones in the area of transportation and agriculture. We present all the research related to civil applications in those areas and challenges including traffic monitoring, Bridge condition assessment, Roadway asset detection and many other applications related to infrastructure inspection enhancement. The paper also contributes with a discussion on the opportunities, which are opened, and the challenges that need to be addressed. Findings from the case studies, it is reported that around 25% of the bridges in united states are deficient and need continuous monitoring for enhancements to prevent any hazard. Unmanned vehicles could be a great help in monitoring these bridges and other important components of transportation, which can efficiently minimize the cost as well as the time spent on inspection for each of this component, as manual inspection requires labor and time which would be subsequently reduced by incorporating the usage of drones in the area of transportation

The Dynamics of Food Web Model with Defensive Switching Property

In this paper, a food web model consisting of two-predator one-prey with the defensive switching of predation avoidance is proposed and analyzed. It is assumed that the prey growth logistically in the absence of predators and defends itself from relatively abundant predator species by switching to another habitat with relatively rare predator species. Sufficient conditions for the stability of the non-trivial equilibrium point are obtained. The Lyapunov function is constructed to establish the global asymptotic stability of the non-trivial equilibrium point when the intensity of defensive switching equal one. Numerical simulations for different sets of parameter values and for different sets of initial conditions are carried out. It has been shown that the system has a globally asymptotically stable non-trivial point when the two predators have the same mortality rates

Sediment Yield Problems in Khassa Chai Watershed Using Hydrologic Models

Upland erosion and sedimentation are one of the severe problems which faces dams as sediments occupy spaces within reservoirs storage, hence, decreasing live water storage which is the main purpose of dam’s construction. Iraq is one of the countries that will face a significant shortage of water income as a result of both the increment in water demand and of the reduction of water shares from the source countries. Thus, the existing dams in Iraq represent a strategic resource to fulfill water demands, and the sedimentation at these dams is studied to assess the quantity of sediments that reach to these reservoirs and decrease available water volume and useful life of reservoir. In the current study, Khassa Chai Dam is located in the Northeast of Iraq and its main watershed basin covers an area of about 412 km2 between Kirkuk and Al Sulaymaniyah Governorates has been selected to estimate and predict the amount of sediment yield based on 30 years of daily climate data and the events of different intensity rainstorms. Automated geospatial watershed assessment (AGWA) tool model has been used to simulate Khassa Chai Dam catchment area. This model utilizes the geographic information system (GIS) application to analyze the required data from GIS layer for digital elevation model, soil type, land use, and land cover by interference with the required climate data. The key components of AGWA model are the soil and water assessment tool model and kinematic runoff and erosion (KINEROS) model which are able to simulate complex watershed behavior to explicitly account for spatial variability of soils, rainfall distribution patterns, and vegetation. The hydrologic characteristics for Khassa Chai catchment area according to the SWAT outputs show that the most erosive sub-basins are not able to deliver the eroded material or sediments to the reservoir due to their transmission losses, percolation, and other minor obstacles. KINEROS model simulation for sediment yield is much closer to the behavior of Khassa Chai watershed in erosion and sediment transport according to the single storm events and for individually selected sub-watersheds which are closed in their location to reservoir inlet

Application of multi-group cfa in analysing moderation effect of socioeconomic attributes on public housing performance

This study analysed moderation effect of socioeconomic attributes of income and education on public housing performance model using the multi-group confirmatory factor analysis (CFA) method. The objectives of the study was to evaluate the influence of socioeconomic attributes of income and education on public housing performance using occupants’ experience, with a view to proffer recommendations on objective indicator of public housing performance. Literature revealed how little attention is given to effects of socioeconomic attributes on building performance in post occupancy evaluation (POE). This leads to misuse of resources in facilities management. Sample households of 350 were selected in Gombe metropolis, Nigeria, by systematic random sampling to answer questionnaires as the major instrument of data collection. SPSS Version 22 was used for preliminary analyses and AMOS version 21 was used to validate the constructs and develop Structural Equation Model (SEM) of building performance. Results indicated an acceptable SEM model for use in building performance evaluation, with all factor loadings above 0.5 and required fitness indexes achieved. Moderation effect of occupants’ education and income were proved not significant on their experience responses. The finding portrayed occupants’ experience as objective tool for measuring building performance Implication of this finding is in supporting the notion that experience is objective medium of measuring performance than satisfaction. Hence, scholars and professionals in housing should be cautious of the use of these terminologies interchangeably

Development of Weblog as Learning Resource of Coordination System for Student in Senior High School

This study aims to develop a weblog-based learning resource on the coordination system for students in senior high school and to describe the quality of the weblog. This study used a 4D model which is limited only to the define, design, and develop stages. The research sample was 30 class XII IPA MAN 2 Palu students who had completed learning the coordination system in class XI. The data were analyzed qualitatively. The result of the study is a weblog that consists of a homepage menu, video menu, handout menu, evaluation menu, download menu, reference menu, and chat box menu. Weblogs were considered very feasible by media experts, material experts, college students, teachers, and students. It can be concluded that the weblog is considered very feasible as a learning resource for students. This is evidenced by testing the 19 students who use a weblog in learning. Based on the results, there is a strong positive effect of using weblog-based learning resources on student learning outcomes

PENGEMBANGAN KREATIVITAS MASYARAKAT DALAM PEMBUATAN CAKE PISANG

Artikel ini membahas tentang pengembangan kreativitas masyarakat dalam pembuatan cake pisang. Penelitian ini bertujuan untuk mengeksplorasi bagaimana masyarakat dapat mengembangkan keterampilan dan kreativitas mereka dalam membuat cake pisang yang unik dan menarik. Metode penelitian yang digunakan adalah observasi partisipatif dan wawancara dengan anggota masyarakat yang terlibat dalam pembuatan cake pisang. Hasil penelitian menunjukkan bahwa masyarakat memiliki berbagai ide dan teknik kreatif dalam menciptakan variasi cake pisang yang berbeda. Mereka menggunakan bahan-bahan tradisional dan inovatif, serta menggabungkan berbagai rasa dan hiasan untuk menciptakan produk yang menarik. Selain itu, penelitian ini juga mengungkapkan bahwa pembuatan cake pisang dapat menjadi sumber penghasilan tambahan bagi masyarakat, meningkatkan keterampilan mereka dalam pengolahan makanan, dan memperkuat ikatan sosial dalam komunitas. Kesimpulannya, pengembangan kreativitas masyarakat dalam pembuatan cake pisang memiliki potensi untuk mendorong pertumbuhan ekonomi lokal dan memperkaya warisan budaya.Kata Kunci: Pengembangan kreativitas masyarakat, Pembuatan cake pisang, Keterampilan dan inovasi, Variasi cake pisang