36 research outputs found

    Evaluasi Manajemen Keamanan Informasi Menggunakan Indeks Keamanan Informasi (KAMI) Berdasarkan ISO/IEC 27001:2013 pada Direktorat Pengembangan Teknologi dan Sistem Informasi (DPTSI) ITS Surabaya

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    DPTSI merupakan sebuah direktorat untuk menangani permasalahan teknologi informasi dan sistem informasi yang dimiliki oleh ITS. Menurut UU. No. 12 Tahun 12 Ttg. Perguruan Tinggi, misi mencari, menemukan, dan menyebarluaskan kebenaran ilmiah tersebut dapat diwujudkan apabila perguruan tinggi di kelola berdasarkan suatu Tata kelola perguruan tinggi yang baik (Good University Governance). Pengelolaan Informasi merupakan salah satu aspek dalam Good University Governance, termasuk kualitas dan keamanan pengelolaan informasi. Salah satu upaya yang dapat dilakukan untuk meningkatkan kualitas dari keamanan informasi, kementrian Kominfo membuat alat bantu untuk mengukur tingkat kematangan dan kelengkapan dalam keamanan informasi yang disebut dengan Indeks Keamanan Informasi (KAMI). Penggunaan Indeks KAMI ini juga diikuti dengan penerapan ISO 27001 sebagai standar keamanan Internasional yang dapat membantu sebuah organisasi memastikan bahwa keamanan informasi yang diterapkan sudah efektif. Hasil dari penggunaan Indeks KAMI versi 3.1 di DPTSI ITS ini adalah tingkat ketergantungan penggunaan sistem elektronik sebesar 26 dari total skor 50 dan masuk kedalam kategori Tinggi dimana sistem elektronik adalah bagian yang tidak terpisahkan dari proses kerja yang berjalan. Hasil penilaian kelima area yang telah dilakukan adalah sebesar 249 dari 645 dan berada pada kategori tidak layak. Dari hasil tersebut maka dibuat rekomendasi berdasarkan kontrol ISO 27002:2013 untuk pertanyaan-pertanyaan yang mendapat nilai kurang. Kemudian rekomendasi dari penelitian ini dapat dijadikan sebagai bahan pertimbangan dan evaluasi bagi pihak DPTSI ITS Surabaya dalam melakukan perbaikan yang berkaitan dengan mitigasi atau pencegahan kerentanan keamanan informasi, serta memastikan regulasi dapat dicapai dengan baik dan kebijakan keamanan institusi di masa yang akan datang

    A Comparison of Assays for Accurate Copy Number Measurement of the Low-Affinity Fc Gamma Receptor Genes FCGR3A and FCGR3B

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    The FCGR3 locus encoding the low affinity activating receptor FcγRIII, plays a vital role in immunity triggered by cellular effector and regulatory functions. Copy number of the genes FCGR3A and FCGR3B has previously been reported to affect susceptibility to several autoimmune diseases and chronic inflammatory conditions. However, such genetic association studies often yield inconsistent results; hence require assays that are robust with low error rate. We investigated the accuracy and efficiency in estimating FCGR3 CNV by comparing Sequenom MassARRAY and paralogue ratio test-restriction enzyme digest variant ratio (RT-REDVR). In addition, since many genetic association studies of FCGR3B CNV were carried out using real-time quantitative PCR, we have also included the evaluation of that method’s performance in estimating the multi-allelic CNV of FCGR3B. The qPCR assay exhibited a considerably broader distribution of signal intensity, potentially introducing error in estimation of copy number and higher false positive rates. Both Sequenom and PRT-REDVR showed lesser systematic bias, but Sequenom skewed towards copy number normal (CN = 2). The discrepancy between Sequenom and PRT-REDVR might be attributed either to batch effects noise in individual measurements. Our study suggests that PRT-REDVR is more robust and accurate in genotyping the CNV of FCGR3, but highlights the needs of multiple independent assays for extensive validation when performing a genetic association study with multi-allelic CNVs

    Pre-treatment and extraction techniques for recovery of added value compounds from wastes throughout the agri-food chain

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    Pre-treatment and extraction techniques for recovery of added value compounds from wastes throughout the agri-food chain

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    The enormous quantity of food wastes discarded annually force to look for alternatives for this interesting feedstock. Thus, food bio-waste valorisation is one of the imperatives of the nowadays society. This review is the most comprehensive overview of currently existing technologies and processes in this field. It tackles classical and innovative physical, physico-chemical and chemical methods of food waste pre-treatment and extraction for recovery of added value compounds and detection by modern technologies and are an outcome of the COST Action EUBIS, TD1203 Food Waste Valorisation for Sustainable Chemicals, Materials and Fuels

    Effect of solder bump size on interfacial reactions during soldering between Pb-free solder and Cu and Ni/Pd/Au surface finishes

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    Flip chip technology provides the ultimate in high I/ O-density and count with superior electrical performance for interconnecting electronic components. Therefore, the study of the intermetallic compounds was conducted to investigate the effect of solder bumps sizes on several surface finishes which are copper and Electroless Nickel/ Electroless Palladium/ Immersion Gold (ENEPIG) which is widely used in electronics packaging as surface finish for flip-chip application nowadays. In this research, field emission scanning electron microscopy (FESEM) analysis was conducted to analyze the morphology and composition of intermetallic compounds (IMCs) formed at the interface between the solder and UBM. The IMCs between the SAC lead-free solder with Cu surface finish after reflow were mainly (Cu, Ni)6Sn5 and Cu6Sn5. While the main IMCs formed between lead-free solder on ENEPIG surface finish are (Ni, Cu)3Sn4 and Ni3Sn4. The results from FESEM with energy dispersive x-ray (EDX) have revealed that isothermal aging at 150 degree Celsius has caused the thickening and coarsening of IMCs as well as changing them into more spherical shape. The thickness of the intermetallic compounds in both finishes investigated was found to be higher in solders with smaller bump size. From the experimental results, it also appears that the growth rate of IMCs is higher when soldering on copper compared to ENEPIG finish. Besides that, the results also showed that the thickness of intermetallic compounds was found to be proportional to isothermal aging duration

    Pico-hydro Electrification from Rainwater’s Gravitational Force for Urban Area

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    The demand for electrical energy is increasing in most areas in the world. Unstable fossil fuel price and its rapid depletion have led to an intensive research on new energy source and energy conversion. This paper presents the performance of the energy harvesting which focuses on the experimental work to emulate energy harvesting from the rainwater by utilizing a Pico - hydro approach installed to a high building. NACuM core DB-370F DC generators, 1000 litres water tank, 0.5 inch diameter piping system used in two different configurations with three different head setups. The result shows a huge energy harvesting potential obtained from the system and rainwater with maximum 261 milliwatts despite the hardware’s limitation in the setup. Hance, contributes to the cost-efficient due to its small in size, environmentally friendly, and hassle-free maintenance

    Enzymatic hydrolysis of oil palm empty fruit bunch using membrane reactor

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    Enzymatic hydrolysis of oil palm empty fruit bunch (EFB) was performed in a membrane reactor system. The reactor was incorporated with polyethersulfone (PES) ultrafiltration membrane to increase the cellulose conversion and reduce enzyme dosage. Parameters such as enzyme and substrate loading, transmembrane pressure (TMP) and cross-flow velocity (CFV) were investigated on the filtration flux behaviour and retention characteristics during filtration process. The cellulase enzyme was completely retained as the rejection was above 98 % for all cases and complete transmission of sugar molecules was achieved when polyethersulfone membranes with molecular weight cut-off (MWCO) of 10 kDa was used. Results on hydrodynamic parameters show that the permeate flux increased with increasing TMP and CFV. However, the enzyme and reducing sugar rejection remain fairly constant. The concentration polarisation (up to 75 % of total resistances) was the main factor that contributed to the flux decline followed by cake layer and membrane pores resistances. Cellulase was tested for its reusability up to 216 h in enzymatic membrane reactor. Productivity increased remarkably from 0.003 to 0.01 g reducing sugars/FPU enzyme in batch reactor and enzymatic membrane reactor. These results demonstrate the potential of using coupled enzymatic reactor and membrane separations for the production of reducing sugars and enzyme recovery in EFB hydrolysis
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