Web-based invertasis information system can be a solution for management of investment information data that has done manually in the environment of Information and Communication Technology Center -BPPT. In addition, the DIPA (Annual Budget Implementation) program held annually at PTIK-BPPT requires the monitoring or reporting of existing asset data. Using a web-based inventory information system can help ease and speed up the procurement process of DIPA programs, as well as manage stock options, asset lending and asset recovery assets and demand for consumables that have been manually turned into web-based applications. Use of web-based information system applications can be a solution to manage inventory. The use of Snape-IT applications can be an option, since the content available in the Snape-IT application supports the existing needs of the company, but much of the content must be tailored to the business of inventory management processes that are still manual Abstrak Sistem informasi inventaris yang berbasis web bisa menjadi solusi untuk manajemen dan pengelolaan data informasi investasi yang selama ini masih dilakukan secara manual di lingkungan Pusat Teknologi Informasi dan Komunikasi -BPPT. Di samping itu, program DIPA (Daftar Isian Pelaksanaan Anggaran) yang diadakan setiap tahun di PTIK-BPPT perlu adanya monitoring atau pelaporan data aset yang ada. Dengan menggunakan sistem informasi inventari berbasis web, dapat membantu meringankan dan memepercepat proses pengadaan barang dari program DIPA, serta dapat memanajemn stock opname, asset maintenances peminjaman dan pengembalian aset dan permintaan barang habis pakai yang selama ini masih manual menjadi aplikasi berbasis web. Pengunaan aplikasi sistem informasi berbasis web bisa menjadi solusi untuk memanajemen inventari. Penggunakan aplikasi Snape-IT menjadi bisa menjadi pilihan, karna konten-konten yang terdapat pata aplikasi Snape-IT sangan mendukung kebutuhan yang ada pada perusahaan, akan tetapi banyak kontenkonten yang harus disesuaikan dengan bisnis proses manajemen inventaris yang selama ini masih manual.Kata Kunci: Sistem Informasi, Inventaris, Snape-IT.

A shunt active power filter based on P-Q theory combined with high pass filters (HPFs) for harmonic-current compensation was proposed in this paper. A dual level H-bridge inverter (DLHI) and clamp diode multilevel inverter (CDMI) as inverters was used. The proposed active power filter was applied IntroductionThe power quality is determined by voltage swell, voltage sag, flicker, voltage interruption, negative and zero sequence components, voltage and current harmonics [1,2]. The use of non-linear load can increase a harmonic current [3]. The harmonic current also cannot contribute to the active power and need to be eliminated to enhance the power quality [4]. Recent efforts have been made to improve the power quality by reducing harmonic current based on active power filters [5]. A three-phase active power filters was proposed by [6]. This active power filter is controlled by the P-Q theory, the notch instantaneous method, and the positive sequence method. A pulse width modulation (PWM) was used as an inverter. This research shows that a notch instantaneous method can reduce a har monic current with the value of total harmonic distortion (THD) from 19.76 % down to 5.58 %. Furthermore, a positive sequence method can reduce THD to 12.76 %, THD depression does not occur significantly. Compared with the previous methods, the P-Q theory can reduce THD to 3.54 %. The THD result is lower than those of the notch instantaneous and positive sequence methods.A single-phase shunt active filter with a fuzzy controller and a PI controller for harmonic mitigation was proposed by [7]. This active power filter was applied to 230 V, and 50 Hz power systems. The fuzzy controller was reduced THD significantly in comparison with a conventional PI controllers. The dual-level inverter with a PI controller has THD of 8.39 %, which is higher than dual-level inverter with a fuzzy controller with THD of 5.68 %. In the case of a multi-level inverter, the PI controller has 7.10 % and it is also higher than multilevel inverter with a fuzzy controller with THD 4.47 %. Ref [8] proposed a 3-level (NPC) shunt active power filter based on P-Q theory combined with a fuzzy controller for harmonic-current compensation. The simulation results show that the effectiveness of the designed shunt active filter based on PWM fuzzy logic controllers. THD is reduced after compensation to 2.12 %.In this paper, we propose a shunt active power filter based on P-Q theory combined with high pass filters (HPFs) for harmonic-current compensation. In this research, we used a dual level H-bridge inverter (DLHI) and clamp diode multilevel inverter (CDMI) as the inverters. We applied the proposed active power filter to 3-phase 220 V and 50 Hz power systems. The superiority of P-Q theory includes the capability of working instantaneously and in time domain [9][10][11]. The P-Q theory is applied in 3-phase [12]. Hence, P-Q theory considers the 3-phase as a unit, not a superposition or sum of three single-phase circuits [13]. Therefore, the P-

Naturally, the Internet as an open network allows millions of users to interact each other. Furthermore, the giant network vulnerable to various malicious activities that potentially causes many (losses) for both resources and humanity. In order to reduce the potential attacking activities, Internet Engineering Task Force has standardized a network level security so-called IP Security. The key process behind the IP Security is a Security Association that is identified by Security Parameter Index. The initiation of Security Association performance depends on the encryption algorithm used. Hence, the performance of the algorithm candidate is an important consideration. This paper aims to evaluate some encryption algorithm to be used in IPv6 network. Results of the experiments shows that ECP 384 based on the elliptic curve algorithms outperforms than the traditional algorithm such as MODP 1024 and MODP 3072.MATEC Web of Conferences 218, 03001 (2018) https://doi.org/10.1051/matecconf/201821803001 ICIEE 2018There are three aspects on the network security including confidentiality, data integrity and availability. Currently there are several methods in network security to serve the three aspects. The method is usually developed based on the security hole that will be faced. One of the methods used in network security is the IP-Based security system [3]. This protocol can co-exist with IP datagrams to support secure data transmission over unprotected public networks. IPSec is a set of protocols that provide security for Internet communication on the network layer [4]. The most common use of IPSec is to provide a virtual network or VPN (Virtual Private Network) that is used between gateway-to-gateway, host-to-host, or end-to-end [5]. IPSec consists of several subprotocols, they are Authentication Header (AH), Encapsulating Security Payload (ESP), and Internet Key exchange (IKE). AH and ESP aims to provide cryptographic services, while IKE handles the Security Association parameter management.One of the considerations on the implementation of IPSec with IKEv2 is the selection of key exchange cryptography algorithms. This is very important because the key exchange is the process of connecting two or more hosts that want to connect in a secret communications network but through the public network without having to enter into an agreement between the parties involved. In addition, choosing the right key exchange algorithm will affect the performance of the exchange speed, the performance of the encryption strength and the performance of the network itself. This research will evaluate some candidates to obtain the best cryptographic algorithm to be implemented on IPSec and IKEv2.

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AbstrakUntuk meningkatkan performa pembangkit dalam PLTU, dan menjaga performa kerja dan pada sebuah motor perlu dilakukan maintenance secara rutin. Perawatan Motor listrik merupakan salah satu hal yang paling penting untuk meningkatkan realibility / keandalan proses produksi dalam suatu industri. Dalam berbagai kegiatan industri yang tentunya penuh dengan proses-proses yang ada, motor listrik merupakan salah satu equipment atau peralatan yang banyak digunakan untuk menunjang berbagai proses tersebut. Pada industri-industri besar, motor listrik / motor induksi menjadi penggerak utama untuk menggerakkan peralatanperalatan lainnya.Motor Circuit Analysis (MCA) melibatkan pengumpulan dan analisis hambatan, impedansi, induktansi, sudut fasa, respons arus / frekuensi dan isolasi terhadap kesalahan tanah. Tegangan keluaran alat uji kurang dari 9 Vac, keluaran sinusoidal. Medan medan bolak-balik rendah yang dihasilkan dielektrik dan baja magnetik sekitarnya, baik pada stator dan rotor. Cacat gulungan yang menyebabkan perubahan pada dielektrik dan putaran dipolarisasi yang dipolarisasi, yang mengubah kapasitansi rangkaian lilitan pada titik cacat. Efek perubahan yang dihasilkan pada sudut fasa dan respons arus / frekuensi pada fase yang sesuai, menyebabkan perbedaan saat membandingkan fase, atau pengelompokan koil ke fase. Seiring perkembangan kerusakan, perubahan pada sistem isolasi terus berlanjut, sehingga memungkinkan cacat dari waktu ke waktu. Tujuan makalah ini adalah untuk meliput konsep dan prinsip dalam perubahan fisik pada belitan dalam kesalahan kontraksi gulungan.