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Komunitas Anak Muda Punya Usaha (AMPUH) Desa Wonorejo bergerak dalam usaha budidaya ikan, selama ini mengalami kendala dalam pengembangannya yaitu keterlambatan dalam pemberian makam serta kondisi air yang selalu keruh, kegiatan ini merupakan salah satu solusi yaitu dengan implementasi auto feeder yaitu pemberian makan secara otomatis serta water filter yang membersihkan kondisi permukaan dan bagian dasar kolam dengan melakukan penyedotan scara otomatis, 2 alat tersebut telah diimplementasikan di mitra, hasil yang diperoleh telah nampak perkembangan ikan dari segi ukuran dibandingkan dengan sebelum diimplementasikan alat tersebut dalam rentang waktu yang sama serta kondisi kolam yang selalu jernih.Kata kunci: auto feeder; auto water filter; pengabdian; budidaya ikan; sirkulasi

An android-based fetal heart rate measurement is presented in this article. The fetal heart rate was obtained from the mother's abdominal electrocardiogram which was then measured and processed by Raspberry pi using k-means. Raspberry pi processed results produce ECG signals and fetal heart rate which was displayed on Android devices in real-time. The android application can also save heart rate and ECG data or retrieve previously taken heart rate recordings. The system obtained that the average value of accuracy, sensitivity and predictive positive were 90.49%, 97.10% and 93.03%, respectively. The variation of the training time of the algorithm showed that the training time of 10 and 15 seconds mostly has better performance than the training time of 5 seconds.

Community service activities for Muhammadiyah Elementary School Teachers in Polokarto Subdistrict, Sukoharjo Regency have been carried out. The background of this activity is the information obtained that the teachers in the school still use books and blackboards especially for subjects related to Science so that students become less creative and innovative thinking. activities carried out in the form of ongoing activities, namely training in the use of props style, motion and energy as many as 10 kits, presentation of the results of the practice of using props and the process of dissemination to students. The results obtained that all participants in understanding the teaching aids that have been trained, seen from the activeness of the participants, the ability of participants in the presentation and the results of dissemination to students in their respective schools

Absorption spectra of different composition of tellurite glasses were analyzed in order to estimate their lasing properties. Composition of the investigated tellurite glasses are: 55TeO2-(43-x)ZnO-2Bi2O3-xEr2O3(x = 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 mol%). Glasses absorption spectra and density were measured at room temperature using UV-VIS-NIR Spectrophotometer and pycnometer, respectively; while their refractive index were measured by implying Brewster’s angle method. Lasing performance of glasses were then analyzed using Judd-Ofelt theory in order to obtain line strength (S), Judd-Ofelt parameters (Ωt, t = 1, 2, 3), and radiative life-times (τ). It is seen that incorporating Er3+ions of up to 2.5 mol% resulted in decreasing the radiative lifetime of electrons sitting at4I11/2. From Judd-Ofelt parameters analysis it can be concluded that these tellurite glasses tend to have the covalence nature of Er-O bond and thus represents the asymmetry around the Er3+ions site.

Sistem neuromuscular terdiri dari saraf motorik dan otot rangka yang menghasilkan aktivitas kelistrikan pada otot dan menyebabkan otot dapat berkontraksi dan menghasilkan gerak tubuh. Gangguan neuromuscular dapat terjadi pada sel saraf yang dinamakan Neuropathy dan pada sel otot yang dinamakan Myopathy. Aktivitas kelistrikan pada otot direkam melalui suatu alat yang dinamakan Electromiography (EMG). Pada penelitian ini dilakukan identifikasi sinyal EMG pasien sehat, myopathy dan neuropathy. Neuropathy merupakan gangguan yang disebabkan oleh kerusakan sel saraf. Myopathy merupakan gangguan yang disebabkan oleh kerusakan sel otot. Penanganan dan pengobatan myopathy dan neuropathy berbeda, sehingga diperlukan suatu metode yang dapat mendiagnosis dengan tepat jenis gangguan yang dialami. Analisis karakteristik sinyal EMG dilakukan menggunakan metode dekomposisi Wavelet Discrete Dyadic dan variasi fitur Root Mean Square (RMS), approximate entropy, spectral entropy dan Singular Value Decompotition (SVD) entropy. Sinyal karakteristik yang diperoleh di identifikasi menggunakan metode klasifikasi Adaptive Neuro Fuzzy Inference System (ANFIS). Performa ANFIS dalam mengidentifikasi karakteristik sinyal EMG pada masing-masing koefisien dekomposisi, menghasilkan performa terbaik pada koefisien aproksimasi ke-5 (cA5), dengan akurasi 100%, sensitivitas 100% dan spesivitas 100%.

Telah dilakukan inisiasi implementasi zenius yang merupakan aplikasi pembelajaran online di SD Muhammadiyah Wonorejo yang diikuti 17 Guru. Dalam kegiatan tersebut dibagi menjadi 2 tahap, tahap pengenalan Aplikasi berbasis Desktop untuk menu pengunjung, Guru, Murid dan Orang tua. Untuk menu Guru dilatih untuk mengelola kelas, mengunggah materi pembelajaran, membuat soal, melakukan penilaian siswa serta melakukan pelaporan nilai ke orang tua. Tahap berikutnya adalah pengenalan Aplikasi berbasis Android, di latihkan untuk menu Murid, berisi lihat materi pembelajaran, presensi, mengerjakan soal ujian dan mengetahui hasil ujian. Sebelum dilakukan pelatihan sebagian besar tidak memahami aplikasi pembelajaran online, setelah dilakukan pelatihan semua peserta memahami dan akan mengimplementasikan dalam proses pembelajaran di kelas.

Telah berhasil dilakukan klasifikasi kanker paru-paru dari 120 data citra CT Scan. Pada penelitian, proses preposisi dimulai dengan variasi filtering yaitu low pass filter, median filter, dan high pass filter. Segmentasi yang digunakan yaitu Otsu Thresholding yang kemudian teksturnya akan diekstraksi menggunakan fitur Gray Level Co-occurrence Matrix (GLCM) dengan variasi arah sudut. Hasil dari ekstraksi GLCM dijadikan database yang akan menjadi dataset untuk pengklasifikasian citra menggunakan klasifikasi naïve bayes. Hasil dari penelitian dengan 12 buah variasi diperoleh hasil variasi terbaik adalah median filter dengan arah sudut GLCM 0° menunjukkan tingkat akurasi yang paling tinggi sebesar 88,33 %.

Telah dilakukan upaya dalam rangka mengenalkan sains bagi anak usia dini melalui pelatihan yang diikuti oleh 46 Guru dari 23 sekolah PAUD dan TK se kecamatan Polokarto. Kegiatan dilaksanakan dalam 2 tahap, tahap 1 pengenalan sains berbasis IT yaitu mengenalkan aplikasi Augmented Reality AR Animal dan Planet AR, tahap berikutnya pengenalan sains menggunakan alat peraga yaitu alat peraga kesetimbangan dan Angka digital. Sebelum dilakukan pelatihan sebagian besar belum dapat menimplementasikan IT dan alat peraga dalam mengenalkan sains ke anak didik, setelah pelatihan dari hasil angket yang di sebarkan semua Guru dapat memanfaatkan media pembelajaran berbasis IT dan juga memahami dalam mengenalkan sains melalui alat peraga.

Telah dilakukan pemetaan, pembuatan serta pemasangan alat deteksi dini banjir SMaRT FEWS UNS luapan Sungai Samin yang merupakan anak Sungai Bengawan Solo. Alat deteksi dini yang dipasang menggunakan arduino, catudaya menggunakan panel sel surya dan distribusi data menggunakan camera dimana gambar hasil pengambilan data dikirim dan ditampilkan dalam aplikasi berbasis web yang secara online dan realtime serta dapat dimonitor melalui http://banjir.mitigasi.com/simonair Kata kunci : SMaRT FEWS UNS, Banjir, deteksi banjir, camera

Telah dilakukan upaya peningkatan kualitas Sekolah Muhammadiyah se-kecamatan Polokarto Kabupaten Sukoharjo, upaya yang dilakukan adalah berupa pembuatan website serta pelatihan pengelolaan website. Hasil yang diperoleh telah dikelola dengan baik sebanyak 16 website sekolah Muhammadiyah sebagai sarana untuk promosi sekolah yang lebih efektif dan menjangkau lebih luas. Kata kunci : website, sekolah, kualitas, Teknologi Informasi

Lithium Nickel Manganese Cobalt (LNMC) material has been successfully made using the coprecipitation method with precipitant agent oxalic acid and tartaric acid. The material that has been made is used as a cathode material in lithium ion batteries. Lithium ion batteries are made namely type 18650 full cell battery. Based on FTIR characterization, all precursors of nickel manganese cobalt (NMC) material have functional groups of hydroxide and carbonate. Based on the XRF results, the initial material making up the precursors, namely Ni, Mn and Co, is still present in the precursors. The XRD characterization results show that the material obtained has a LNMC spinel crystal structure which is like in JCPDS data No. 09-0063. The results of SEM show the LNMC precursor material is shaped like a spherical ball with impurities. The NMC cathode material is made into a full cell battery using graphite as the anode. Yield products show synthesis using oxalic acid as the highest yield. Battery test results obtained the best discharge value from LNMC-OA of 12.66 mAh / g. All samples were tested for specific capacity stability by carrying out charge-discharge for 100 cycles. And the results are all samples can still work on the 100th cycle.

The growing population of Surakarta will impact the use of groundwater as a source for daily needs, meanwhile its quantity is decreasing because of the growing number of industries and hotels. The purpose of this study was to determine the depth of groundwater, determine potential water sources based on the thickness of aquifers, and map the depth of groundwater distribution using GIS software. This research was carried out in 11 points in the northern part of Surakarta using Geoelectric method. The results of the study showed that the depth of groundwater in the northern part of Surakarta is within 1.16 – 27.33 meters for shallow aquifer and 40.83 – 101.35 meters for deep aquifer, which were found in sandy layers.

An experimental study has been conducted to analyze the losses due to the fiber optic macro bending to be applied to the flood sensor. Optical fiber macro bending occurs when an optical fiber is bent with a radius wider than the radius of the optical fiber. Data retrieval is gathered by measuring the change in the value of the light intensity due to the presence of symptoms bend (macro bending) on optical fibers that cause the symptoms of losses optical fiber application that read in Arduino IDE. Optical fibers used are plastic optical fiber diameter of 0,3 mm and light sources are red LED (610 < λ < 760 nm). The silicone rubber used is 3.2 cm in diameter with 5 turns. Results of the research showed that the greater the bending is given, the greater the value of losses in optical fiber will be, the trend graphs show the value of the sensitivity of the sensor for R2 = 0,8765, so the inferred design sensor devices made have the potential to be applied as flood sensors.

Preliminary studies of testing samples using optical fiber sensors were carried out to obtain the appropriate data results and compared with UV-Vis spectrometers as well as to obtain optical characteristics of lard compared with other fat samples. The test method used instruments such as ocean optics HR4000CG-UV-NIR and DH-2000-BAL UV-Vis light source (halogen) NIR with wavelength range (200-1200) nm. The results of testing pure pork samples (chicken and beef mixture) with optical fiber sensors obtained peaks at λ = 715 nm and λ = 937 nm. The characteristics possessed by pure pork samples are high intensity (reflecting) values and low absorbance (absorption). Tests carried out with optical fiber indicate the detection of pure lard content or with a mixture of other ingredients. The graph of absorbance relation to concentration shows an upward linear trend with a value of R2 0.092193, 0.9474 and 0.95901.

A preliminary study has been conducted to detect the presence of borax in meat using a optical fiber sensor. The study was conducted in 2 stages, the first stage was a test using a UV-Vis spectrometer which was used as reference data to test the presence of borax in meat with variations in the borax mass of 0.1 gr, 0.2 gr and 0.3 gr mixed with each 40 gr of beef, while the next stage is to use an optical fiber sensor that has been made where the results of testing are compared with the results of the first stage. The results obtained in the initial stage are more and more borax content in the meat showing the absorbance value increases at a wavelength of 419 nm with an R2 value of 0.93. In the second stage using an optical fiber sensor, the results of transmittance values obtained at 419 nm wavelength decreased linearly with R2 values of 0.99, the transmittance value is inversely proportional to the absorbance value. This shows that a fiber optic sensor made has the potential to be used as detection for borax content in meat.

Modes are melody forming tone arrangement derived from the progression of natural basic tone (major scale) and grouped based on patterns and produced nuances. This paper emphasizes on to similarity analysis of seven types of modes, i.e Ionian, Dorian, Phyrgian, Lydian, Mixolydian, Aeolian, and Locrian. Each modes has been recorded in C major scale and analyzed by spectral analysis with Dynamic Time Warping (DTW) method to determine the similarity to one another. The results showed the similarity between modes based on the value of minimum cumulative distance or similarity cost. There are high resemblances to each other between Ionian, Dorian, Phyrgian, and Lydian mode. High similarities between Mixolydian and Locrian modes. Aeolian mode stand on its own because it has large similarity cost value.

Telah dilakukan upaya dalam rangka optimalisasi penjualan produk – produk hasil karya masyarakat Wonorejo Kecamatan Paolokarto Kabupaten Sukoharjo. Bulan Maret tahun 2020 merupakan awal terjadinya pandemi virus Corona sehingga penjualan produk secara offline hampir terhenti karena masyarakat diwajibkan tetap berada di rumah. Sebuah upaya dilakukan agar masyarakat tetap dapat memperoleh pendapatan, sehingga dihasilkan layanan berbasis media sosial ecommerce untuk menampung berbagai produk masyarakat, hasilnya berupa akun facebook Produk Unggulan Wonorejo untuk proses jual beli, proses awal adalah sosialisasi akun tersebut, akun yang dibuat sejak 12 April 2020 telah memiliki teman 2761 dan juga group jual Produk Unggulan Wonorejo yang memiliki anggota 510 Anggota. Sampai saat ini telah ada 1670 postingan jual beli, banyak terjadi transaksi jual beli untuk produk – produk hasil masyarakat, dengan adanya akun dan group ini membantu masyarakat dalam menjual produknya di masa pandemi covid 19 terlihat dari hasil jajak pendapat dimana selama 2 bulan hasilnya adalah 80 % menyatakan bermanfaat, 19 % cukup bermanfaat dan 1 % tidak bermanfaat

Product development is necessary for companies to be able to survive in an increasingly turbulent business environment. This study aims to (1) to formulate an alternative strategy product development kurma salak based on product life cycle analysis and SWOT (2) choose an alternative strategy that prioritized for implementation. In this research which become sample is Kelompok Tani Ambudi Makmur II in district Bangkalan that produce food and beverages processed from Salak especially kurma salak that becomes Bangkalan flagship product. The method usedis the SWOT matrix, Product Life Cycle (PLC) and QSPM matrix. Technique analyse used by data is descriptive analysis technique. Conclusion from research show there are ten alternative strategies which is then sorted by total value of attractive scores. Three alternative strategies with the greatest Total Attractive Score (TAS) is expanding its marketing area, to develop production sites in other areas, increasing the production of kurma salak. Keywords: product development strategy, PLC, SWOT

IThe risk of accidents in the railway, especially on unmanned railroad crossing, are still high. A train arrival on railroad crossing warning system is indispensable. The warning system will detect train arrival on the railroad crossing and issue a warning to the crossers. A sensor based on optical fiber Weight in Motion (WIM) is proposed. This paper presents a design of a railroad crossing warning system based on WIM sensor. The sensor placed under the railroad tracks and detects vibrations footprints transmitted along those rails. Artificial Neural Network (ANN) is used to process the signal pattern of the WIM system output. By using ANN, the vibration footprint pattern was classified and used as on-sensor train detection. As the train detected, the arrival time of the train on the raiload crossing was estimated. The result is a warning system which can detect train arrival on the railroad crossing and issue a warning signal.

The analytical solution of Ddimensional Dirac equation for Coulombic potential is investigated using Nikiforov-Uvarov method. The D dimensional relativistic energy spectra are obtained from relativistic energy eigenvalue equation by using Mat Lab software.The corresponding D dimensional radial wave functions are formulated in the form of generalized Jacobi and Laguerre Polynomials. In the non-relativistic limit, the relativistic energy equation reduces to the non-relativistic energy which will be applied to determine some thermodynamical properties of the system. The thermodynamical properties of the system are expressed in terms of error function and imaginary error function.

The Schrodinger equation for q-deformed Scarf II potential plus Poschl-Teller potential and trigonometric Scarf potential was solved using Asymptotic Iteration Method (AIM). The combination of three potentials was substituted into the Schrodinger equation, then we separated the three-dimensional Schrodinger equation into three one-dimensional differential equation, consist of the radial part, polar part and azimuth part. The radial, polar and azimuth part differential equations were solved by reducing them into the hypergeometric intermediaries equation, to further we resolved it using AIM. By using AIM, the energy equation and the variable separation constant equations, λ1 for the polar part and λ2 for the azimuth part were obtained, where both are interrelated between the quantum numbers. The value of energies were calculated numerically using Matlab software, where the increasing in the radial quantum number nr causes increase and decrease in the energy. Radial, polar and azimuth wave functions were defined as hypergeometric functions and were visualized using Matlab software. The results show that the disturbance of Poschl-Teller potential and trigonometric Scarf potential give effect in probability

A fiber optic sensor is to detect the cholesterol content in blood serum-based biosensor using plastic optical fiber that has been designed. The fiber optic sensor designed with sensing area was a fiber optic grated by 5 scratches then given bending treatment by 5 cm. The first test was by UV-Vis spectrometer with linearity of 0.96. The second test was by light spectrometer with linearity in white LED of 0.94. Optical fiber sensors were made to work well on a range of blood serum concentration of 140 mg/dL to 250 mg/dL.

Research of optical fiber-based heart rate detection sensor has been conducted using the reflection configurationon the thorax motion modified. Optical fiber used in this research was Plastic Optical Fiber (POF) with a diameter of 0.5. Optical fiber system is made with two pieces of fiber, the first fiber is to serve as a transmitter transmitting light from the source to the reflector membrane, the second fiber serves as a receiver. One of the endsfrom the two fibersis pressed and positioned perpendicular of reflector membrane which is placed on the surface of the chest. The sensor works on the principle of intensity changes captured by the receiver fiber when the reflector membrane gets the vibe from the heart. The light source used is in the form of Light Emitting Diode (LED) and Light Dependent Resistor (LDR) as a light sensor. Variations are performed on the reflector membrane diameter. The light intensity received by the detector increases along with the increasing width of the reflector membrane diameter. The results show that this sensor can detect the harmonic peak at a frequency of 1.5 Hz; 7.5 Hz; 10.5 Hz; and 22.5 Hz in a healthy human heart with an average value of Beat Per Minute (BPM) by 78 times, a prototype sensor that is made can work and function properly.

Solution of Schrodinger equation in three dimensions for Eckart and Manning-Rosen potential has been obtained by using the asymptotic iteration method. Energy spectrum and wave function for these potentials was obtained. It is known that the wave function for the corresponding potentials contains hypergeometric series due to the type of Schrodinger equation. However, the wave function for radial part is not normalizable, due to its equation that reaches to infinity when r equals to zero. The energy spectrum and wave function for corresponding potentials had also been analyzed with the help of Matlab R2013a software.

We apllied asymptotic iteration method (AIM) to obtain the analytical solution of the Dirac equation in case exact pseudospin symmetry in the presence of modified Pcischl- Teller potential and trigonometric Scarf II non-central potential. The Dirac equation was solved by variables separation into one dimensional Dirac equation, the radial part and angular part equation. The radial and angular part equation can be reduced into hypergeometric type equation by variable substitution and wavefunction substitution and then transform it into AIM type equation to obtain relativistic energy eigenvalue and wavefunctions. Relativistic energy was calculated numerically by Matlab software. And then relativistic energy spectrum and wavefunctions were visualized by Matlab software. The results show that the increase in the radial quantum number nr causes decrease in the relativistic energy spectrum. The negative value of energy is taken due to the pseudospin symmetry limit. Several quantum wavefunctions were presented in terms of the hypergeometric functions.

The Dirac equation of q-deformed hyperbolic Manning Rosen potential in D dimension was solved by using Supersymmetric Quantum Mechanics (SUSY QM). The D dimensional relativistic energy spectra were obtained by using SUSY QM and shape invariant properties and D dimensional wave functions of q-deformed hyperbolic Manning Rosen potential were obtained by using the SUSY raising and lowering operators. In the nonrelativistic limit, the relativistic energy spectra for exact spin symmetry case reduced into nonrelativistic energy spectra and so for the wave functions. In the classical regime, the partition function, the vibrational specific heat, and the vibrational mean energy of some diatomic molecules were calculated from the non-relativistic energy spectra with the help of error function and imaginary error function.

Meningkatnya suhu global bumi yang sering disebut dengan Global Warming merupakan faktor utama yang menyebabkan peningkatan ketinggian air laut (sea level rise). Kenaikan permukaan air laut ini dalam waktu yang cukup lama akan mengakibatkan pemuaian air laut sehingga meningkatkan intensitas dan frekuensi banjir serta dapat terjadi penggenangan suatu wilayah daratan. Karena dampak yang diakibatkan cukup signifikan, maka perlu dilakukan pemantauan kedudukan tinggi permukaan air laut di wilayah perairan laut Indonesia khususnya di perairan laut pulau Jawa. Pemantauan ini dilakukan pada perairan pulau Jawa dalam kurun waktu 10 tahun dengan menggunakan data satelit altimetri Topex/Poseidon, Jason-1 dan Jason-2. Pengamatan dan analisanya dipilih 6 lokasi penelitian, yaitu di perairan laut Jakarta, Semarang, Surabaya, Pangandaran, Jogjakarta dan Prigi. Data satelit tersebut merupakan data global, untuk mendapatkan data penelitian dilakukan konversi data dan pemfilteran sesuai dengan posisi lintang dan bujur daerah penelitian dengan luasan 0,5ox0,5o. Dalam penelitian ini, software Matlab digunakan untuk pengolahan datanya. Berdasarkan hasil penelitian telah terjadi fenomena sea level rise (SLR) yang bervariasi. Diperoleh sea level rise di Jakarta sebesar 2,5 ± 0,24 mm/tahun, Semarang sebesar 2,16 ± 0,20 mm/tahun, Surabaya 2,72 ± 0,19 mm/tahun, Pangandaran 0,71 ± 0,33 mm/tahun, Jogjakarta 0,91 ± 0,38 mm/tahun dan Prigi 1,3 ± 0,38 mm/tahun. Sehingga rata – rata sea level rise di wilayah perairan laut utara pulau jawa sebesar 2,46 ± 0,21 mm/tahun dan di wilayah perairan laut selatan pulau jawa sebesar 0,97 ± 0,36 mm/tahun. Berdasarkan pola grafik altimetri dan grafik pasang surut terdapat adanya korelasi antara data altimetri dan data pasang surut, dimana terbentuk pola grafik yang sama. Sehingga grafik altimetri telah menunjukkan kenaikan muka laut dengan benar. Kata Kunci : Global warming, Pulau Jawa, Sea level rise, Satelit altimetri. ABSTRACT Global Warming is caused by global temperatures of the earth. It is the main factor causing sea level rise. Sea level rise will cause expansion of the sea, so that it will increase the intensity and frequency of floods and inundation occur in the land. Because it significant impact, it is important to monitor the sea level in Indonesia sea. Especially in the sea of the Jawa island. Monitoring of sea level rise is done in the sea of the Java island at the past 10 years using data of altimetry satellite: Topex/Poseidon, Jason-1 and Jason-2. Observation and analysis are selected in six sites, Jakarta, Semarang, Surabaya, Pangandaran, Jogjakarta and Prigi. Data of the satelitte is global data, for getting data research done by data conversing and data filtering according to the latitude and longitude of the research with 0,5ox0,5o interval. In this research, Matlab software used for data processing. Based on the research, it have happened a sea level rise phenomena variously. Retrieved sea level rise in Jakarta at 2,5 ± 0,24 mm / year, Semarang of 2,16 ± 0,20 mm / year, Surabaya 2,72 ± 0,19 mm / year, Pangandaran 0,71 ± 0,33 mm / year, Jogjakarta 0.91 ± 0,38 mm / year and Prigi 1,3 ± 0,38 mm / year. So the average of sea level rise in the north sea of Java island equal 2,46 ± 0,21 mm / year and in the south sea of Java island equal 0,97 ± 0,36 mm / year. Based on pattern of the altimetry graph and tide graph where got the same pattern. Keywords: Global warming, Java island, Sea level rise, Satelit altimetri.

A simple method to measure a solution refractive index using fixed mirror refractive optical fiber sensor has been investigated. The solution used are sugar and salt solution, with concentration varies from 1M to 5M. The diameter of polymer optical fiber used is 0.5 mm and light source used is LED (λ=676 nm). The sensor work based on light intensity modulation, sub jected to mechanical structure change of the fiber due to an applied force. The result showed that the concentration of sugar and salt linearly are related with their refractive indeces (R2=0,95006) and (R2=0,99858).

It has been done a research about separation of regional-residual anomaly in Gravity method. This research compares the result of three methods i.e. moving average method, polynomial method, and inversion method. The computer program is created using a computer programming Matlab 7. From three methods that have been made, the separation results are compared withresults of separation by using Upward Continuation method. From the results of these comparisons will be available an excellent program of regional-residual anomali separation. The results show that in polynomial method of the order 4 obtained similar contour to the separation by Upward Continuation Software. So that the output of this separation will be treated again with Grav2DC software. The output of this software is the density of rock Grav2DC of the studyarea. Processing results obtained the minimum error of 1.85% for the separation by polynomial method, while for the method of Upward Continuation obtained minimum error of 2.22%. The results obtained show that the separation of regional-residual anomali by polynomial method is similar to separation by Upward Continuation method.

Experimental study to analyze the effect of macrobending losses in plastic optical fiber triple bending model based on PC (personal computer) has been conducted. The data is gathered by measuring the change of the light intensity due to the presence of bending on optical fibers. The bending causes losses of optical fiber that is read by WIM (weight in motion) Acquisition program based on Borlan Delphi 7. The optical fibers are plastic with diameter of 3 mm. The diameter of pin is 8 mm and the space between the pin is 5 mm. The light source is a LED (λ=676 nm). As a result, the losses of optical fiber increase with the enhancement of bending. The increase trend linear to sensitivity of the sensor with gradient of 0,1063 and R2 of 0,9626. Therefore, the proposed design might be applied as a WIM sensor.

Telah dilaksanakan penelitian tentang analisis citra simulator unit radiologi RSUD dr. Moewardi Surakarta. Citra yang dihasilkan simulator sebagai verifikasi lapangan dalam radioterapi. Citra tersebut akan ditajamkan sehingga batasan luas lapangan semakin jelas. Citra diolah dengan metode deteksi tepi yang telah diprogram melalui perangkat lunak Matlab. Tampilan program berupa GUI (Graphic User Interface) sehingga mudah digunakan. Selain metode deteksi tepi, program juga melakukan perhitungan aksis lapangan penyinaran. Perhitungan aksis lapangan penyinaran berdasarkan informasi yang diperoleh pada citra meliputi faktor magnifikasi dan axis penyinaran. Hasil dari penelitian ini adalah suatu program yang dapat mendeteksi tepi citra secara tepat dan sesuai gambar asli dan dapat menghitung besarnya aksis lapangan penyinaran secara teliti.