Aplikasi Sistem Pakar Untuk Mendiagnosa Kerusakan Monitor CRT

This research aims to design up a program of expert system to diagnose the damage of CRT monitor (Cathode Ray Tube) with a solution of repair. This system using knowledge base rules and decision table as its knowledge representation. The programming language in use is Visual Basic 6.0. Research results is a system with consulting, addition of a base rule, and increased knowledge menus. This expert system application is able to diagnose damage to CRT monitor also provides solutions in fixe

Transverse instability of gravity–capillary solitary waves on deep water in the presence of constant vorticity

International audienc

A nonlinear Schr\"odinger equation for gravity-capillary water waves on arbitrary depth with constant vorticity: Part I

A nonlinear Schr\"odinger equation for the envelope of two-dimensional gravity-capillary waves propagating at the free surface of a vertically sheared current of constant vorticity is derived. In this paper we extend to gravity-capillary wave trains the results of \citet{thomas2012pof} and complete the stability analysis and stability diagram of \citet{Djordjevic1977} in the presence of vorticity. Vorticity effect on the modulational instability of weakly nonlinear gravity-capillary wave packets is investigated. It is shown that the vorticity modifies significantly the modulational instability of gravity-capillary wave trains, namely the growth rate and instability bandwidth. It is found that the rate of growth of modulational instability of short gravity waves influenced by surface tension behaves like pure gravity waves: (i) in infinite depth, the growth rate is reduced in the presence of positive vorticity and amplified in the presence of negative vorticity, (ii) in finite depth, it is reduced when the vorticity is positive and amplified and finally reduced when the vorticity is negative. The combined effect of vorticity and surface tension is to increase the rate of growth of modulational instability of short gravity waves influenced by surface tension, namely when the vorticity is negative. The rate of growth of modulational instability of capillary waves is amplified by negative vorticity and attenuated by positive vorticity. Stability diagrams are plotted and it is shown that they are significantly modified by the introduction of the vorticity

Online Testing of User Profile Resilience Against Inference Attacks in Social Networks

International audienceTo increase awareness about privacy threats, we have designed a tool, SONSAI, for Facebook users to audit their own profiles. SONSAI predicts values of sensitive attributes by machine learning and identifies user public attributes that have guided the learning algorithm towards these sensitive attribute values. Here, we present new aspects of the system such as the automatic combination of link disclosure attacks and attribute prediction. We explain how we defined sensitive subjects from a survey. We also show how the extended tool is fully interfaced with Facebook along different scenarios. In each case a dataset was built from real profiles collected in the user neighbourhood network. The whole analysis process is performed online, mostly automatically and with accuracy of 0.79 in AUC when inferring the political orientation

Sistem Klasterisasi Menggunakan Metode K-Means Dalam Menentukan Posisi Access Point Berdasarkan Posisi Pengguna Hotspot Di Universitas Muhammadiyah Purwokerto

Fasilitas internet yang diberikan universitas salah satunya melalui pemasangan hotspot dapat dioptimalkan dengan pemasangan perangkat access point pada posisi yang tepat. Hal yang sangat penting adalah mempertimbangkan posisi pengguna internet yang mengakses hotspot sehingga dapat diakses dengan mudah dan nyaman. Berdasarkan data koordinat garis lintang dan bujur posisi pengguna hotspot di Universitas Muhammadiyah Purwokerto yang diolah dengan menerapkan algoritma K-Means, dihasilkan posisi paling tepat untuk pemasangan perangkat access point. Dapat diketahui pula bahwa posisi perangkat access point sebelumnya yang dipasang tanpa mempertimbangkan posisi pengguna hotspot belum sesuai dengan posisi access point yang dihitung mempertimbangkan posisi pengguna, yaitu pada masing-masing koordinat AP1(109.27216, -7.41281431122), AP2(109.2723296783, -7.4142704478), dan AP3(109.2733672508, -7.4128270035

Leveraging generative adversarial networks to create realistic scanning transmission electron microscopy images

The rise of automation and machine learning (ML) in electron microscopy has the potential to revolutionize materials research through autonomous data collection and processing. A significant challenge lies in developing ML models that rapidly generalize to large data sets under varying experimental conditions. We address this by employing a cycle generative adversarial network (CycleGAN) with a reciprocal space discriminator, which augments simulated data with realistic spatial frequency information. This allows the CycleGAN to generate images nearly indistinguishable from real data and provide labels for ML applications. We showcase our approach by training a fully convolutional network (FCN) to identify single atom defects in a 4.5 million atom data set, collected using automated acquisition in an aberration-corrected scanning transmission electron microscope (STEM). Our method produces adaptable FCNs that can adjust to dynamically changing experimental variables with minimal intervention, marking a crucial step towards fully autonomous harnessing of microscopy big data.Comment: 25 pages, 6 figures, 2 table

Effect of CuO Doped Polyvinyl Alcohol on the Structural and Optical Properties of PVA Films

The effect of copper oxide doped in PVA on the structural and optical properties of composite films is studied experimentally. Samples are PVA films of 20±1 µm thickness doped with different studied using X – ray diffraction. Using the transmittance of samples, the effect of doped and their concentration on optical parameters of PVA films include absorption and others parameters. Results show the band gap energy of samples is decreased. Keywords : PVA films, doping, optical properties