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All Journal Tengkawang : Jurnal Ilmu Kehutanan BIOTROPIA - The Southeast Asian Journal of Tropical Biology Naturalis : Jurnal Penelitian Pengelolaan Sumberdaya Alam dan Lingkungan Jurnal Teknologi Sistem Informasi dan Aplikasi ComTech: Computer, Mathematics and Engineering Applications
Yansen Yansen, Yansen
Department of Forestry, Faculty of Agriculture, University of Bengkulu, Bengkulu, Sumatra
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Engineering Immunology & microbiology Mathematics Veterinary

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Pengembangan Aplikasi Mobile dengan Qt Sdk: Studi Kasus Monitoring Ruangan Menggunakan Kamera Yansen, Yansen; Prijono, Agus
ComTech: Computer, Mathematics and Engineering Applications Vol 5, No 1 (2014): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v5i1.2641

Abstract

Nowadays, cell phones or mobile phones have become a multipurpose tool. The developers of mobile phone/smartphone have added an assortment of features and applications that are very useful for the users. Nokia provides the opportunity for application developers by providing developers such as Qt SDK. Application developers can use Qt SDK to design and create applications that can run on mobile phones based on Symbian. In this research Qt SDK was used to create applications for monitoring a room using a camera and display it on a Symbian-based smartphone. Research also used webcam7 software to monitor the camera and display it on PC screen. The Symbian used was Nokia E71. The camera used webcam M-Tech camera connected to the PC via USB cable, and internal webcam. Virtual routers were used to make the laptop into an access point. Virtual routers created using the netsh command was typed at the command prompt laptop. Symbian smartphone was connected to the wifi on the laptop. By accessing the IP of the laptop, display on a webcam has successfully been seen through a symbian smartphone monitoring application created using Qt SDK.
KUALITAS PERAIRAN DAN KEANEKARAGAMAN MIKRO ALGA DI DANAU DENDAM UNTUK MENYUSUN STRATEGI PENGELOLAAN KAWASAN TWA DANAU DENDAM Wijnana, Adhika Putra Agra; Martono, Agus; Martono, Dede; Susatya, Agus; Yansen, Yansen
Naturalis: Jurnal Penelitian Pengelolaan Sumberdaya Alam dan Lingkungan Vol. 12 No. 1 (2023)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/naturalis.12.1.24223

Abstract

Lake Dendam is never a loticwaters with lots of human activities around the area. The high human activity around the waters has an impact on the quality of the waters and the organisms in the vicinity. This observation was carried out to obtain an up-to-date picture of water quality and micro-algae biodiversity in Revenge Lake for developing sustainable management strategies. Tests were carried out on the chemical and physical quality of the waters, and the biodiversity of microalgae which were then processed into an area management strategy. The results of the water quality test showed slightly polluted conditions with values of dissolved oxygen (DO), chemical oxygen demand (COD), total suspended solid (TSS), and phosphate which were still outside the water quality standards. However, conditions that can still be tolerated are peat waters. The microalgae biodiversity test showed the dominance and diversity of microalgae genera in the waters. The dominant genus is Nitzchia sp. From these results obtained six sustainable management strategies for Revenge Lake.   Keywords : Biodiversity, Dendam Lake, microalgae, water quality
ANALISIS PENDUGAAN CADANGAN KARBON DI RUANG TERBUKA HIJAU PADA LINGKUNGAN PERKANTORAN PEMERINTAH PROVINSI BENGKULU Analysis of Carbon Stock Estimation in Green Open Spaces within the Government Office Environment) Susanti, Amelia Dwi; Nahlunnisa, Hafizah; Wiryono, Wiryono; Yansen, Yansen; Aprilensi, Susan
Tengkawang : Jurnal Ilmu Kehutanan Vol 15, No 1 (2025): TENGKAWANG : JURNAL ILMU KEHUTANAN
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jt.v15i1.91154

Abstract

Global warming is a phenomenon caused by increased emissions of greenhouse gases in atmosphere, namelycarbon dioxide (CO2), methane (CH4), and nitrous (N2O) oxide. The greenhouse gas that has a big influence on rising air temperatures at the earth's surface is carbon dioxide (CO2),whose concentration increases every year. Trees in the green open space area in theBengkulu Province Government Offices have an important role in reducing carbon emissions. This research aimed to determine the carbon stored in trees and poles in Bengkulu Province Office Parks. The research was conducted from May to July 2017 using sensus method. The carbon storage was estimated using allometric models. The research results showed that the total stored carbon was 123.38 tons/ha, while the total biomass was 457.97 tons. The plant species with the highest carbon storage were Tanjung (21.69 tons/ha), Mahogany (21.25 tons/ha), and Angsana (20.66 tons/ha). The location with the highest carbon storage was the Bengkulu Governor's Office, with a total carbon of 44.56 tons/ha and 86 individual trees.. Keywords: Allometric models, carbon reserves, global warming, green open spaces, governmental office complex. Abstrak Pemanasan global merupakan fenomena yang disebabkan oleh peningkatan emisi gas rumah kaca (GRK) di atmosfer seperti gas karbondioksida (CO2), metana (CH4), dan nitrous (N2O). Gas rumah kaca yang sangat berpengaruh besar terhadap naiknya suhu udara di permukaan bumi adalah karbon dioksida (CO2) yang konsentrasinya mengalami peningkatan dari tahun ke tahun. Pepohonan yang berada di area Ruang Terbuka Hijau pada Lingkungan Perkantoran Pemerintah Provinsi Bengkulu memiliki peran penting untuk mendukung penurunan emisi karbon. Penelitian ini bertujuan untuk mengetahui cadangan karbon tersimpan di pohon dan tiang di Taman Lingkungan Perkantoran Pemerintah Provinsi Bengkulu. Penelitian dilakukan pada bulan Mei sampai Juli 2017 dengan menggunakan metode sensus. Cadangan karbon dihitung dengan menggunakan model allometrik. Hasil penelitian menunjukkan total karbon tersimpan adalah 123.38 ton/ha, sedangkan total biomassa sebesar 457.97 ton. Jenis tumbuhan yang memiliki simpanan karbon tertinggi adalah Tanjung 21.69 ton/ha, mahoni 21.25 ton/ha, angsana 20.66 ton/ha. Lokasi yang paling banyak memiliki simpanan karbon adalah Kantor Gubernur Bengkulu dengan total karbon 44.56 ton/ha, dengan jumlah individu 86. Kata kunci: Cadangan karbon, model allometrik, pemanasan global, ruang terbuka hijau, taman lingkungan perkantoran
Rekayasa Perangkat Lunak Performance Indicator dalam Penentuan Penilaian Karyawan dengan Metode Simple Additive Weighting Yansen, Yansen; Fauziah, Zifa; Ananda, Yesica Wisda; Yulianti, Yulianti
Jurnal Teknologi Sistem Informasi dan Aplikasi Vol. 3 No. 4 (2020): Jurnal Teknologi Sistem Informasi dan Aplikasi
Publisher : Program Studi Teknik Informatika Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Employee appraisal is an important factor in the development of a company effectively and efficiently because employee appraisal is one of many indicators in measuring the background of human resources system in the company. Determining the right indicators of human resources can motivate better employee performance. To support this kind of system, a software engineering with Performance Indicator system is needed and data collection techniques by direct observation and data documentation are needed. Application of engineering Key Performance Indicator software for employee performance appraisal using the Simple Additive Weighting method can result in the efficiency of the assessment process in determining the quality of an employee's performance. as well as assisting employees in knowing the results of performance evaluation, and making it easier for supervisors to obtain reports on sales performance ratings so that superiors can and make determine the amount of salary, commision and bonus increases more precisely and efficiently.
The Expansion of Merremia peltata (L.) Merrill in Fragmented Forest of Bukit Barisan Selatan National Park Enhanced by Its Ecophysiological Attributes Yansen, Yansen; Wiryono, Wiryono; Deselina, Deselina; Hidayat, Muhammad F.; Depari, Efratenta K.
BIOTROPIA Vol. 22 No. 1 (2015): BIOTROPIA Vol. 22 No. 1 June 2015
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2015.22.1.353

Abstract

Forest opening and fragmentation may affect the composition of vegetation by permitting the expansion or domination of one or two species in the area. This study found that , an invasive climbing creeping Merremia peltata/species, has dominated some area of Bukit Barisan Selatan National Park (BBSNP). Domination of this species was favoured by forest fragmentation, indicated by the significantly higher number of individuals of in the open M. peltataarea than in intact forest. The ecophysiological characters of support the ability of this species to become a M. peltatastrong invader. As the expansion of this species may negatively affect the biodiversity and vegetation health, the application of appropriate ecological approaches to control the domination of in the conservation area is M. peltatanecessary.
Co-Authors Agus Martono Agus Prijono AGUS SUSATYA Ananda, Yesica Wisda Aprilensi, Susan Deselina Deselina, Deselina Efratenta K. Depari, Efratenta K. Fauziah, Zifa Martono, Dede Muhammad F. Hidayat, Muhammad F. Nahlunnisa, Hafizah Susanti, Amelia Dwi Wijnana, Adhika Putra Agra Wiryono Wiryono, Wiryono Yulianti Yulianti