ABSTRAKPencarian pada database yang biasa dilakukan mahasiswa hanya mampu mencari judul yang sesuai berdasarkan kata kunci yang diinputkan, misalnya, jika kata kunci yang dimasukkan adalah "sistem cerdas" maka akan ditampilkan semua dokumen yang mengandung kata "sistem cerdas" namun sistem tidak bisa mengukur mana dokumen yang paling mirip. Untuk dapat melakukan pencarian berdasar substansi yang paling mirip, terdapat teknologi yang disebut information Text Retrieval. Dalam penelitian ini akan dikembangkan suatu sistem temu kembali informasi judul tugas akhir dan perhitungan kemiripan dokumen menggunakan vector space model. Sistem secara otomatis akan melakukan indexing secara offline dan temu kembali (retrieval) secara real time. Proses retrieval dimulai dengan mengambil query dari pengguna, menerapkan stop word removal sehingga dihasilkan keyword yang compaq tetapi dapatmewakili query tersebut, kemudian sistem menghitung kemiripan antarakeyword dengan daftar dokumen yang diwakili oleh term-term di dalam index. Dokumen akan ditampilkan diurutkan berdasarkan dokumen yang paling mirip.Dari hasil pengujian terlihat ketika keyword "android" dimasukkan maka akan tampil empat dokumen yang diurutkan sesuai tingkat kemiripannya, yaitu docId 3 dengan tingkat kemiripan 0.9512, docId 4 dengan tingkat kemiripan 0.5020, docId 2 dengan tingkat kemiripan 0.2671, docId 8 dengan tingkat kemiripan 0.1522.Kata kunci: temu kembali, vector space model, stopword. ABSTRACTQuerying data from the database with SQL syntax will produce results that exactly match with the condition specified in where clause. It will not be able to determine the other result that does not contain the condition specified in where clause, even it may be subtantially similar with the condition. It will not be able to determine the value of similarity of each result with the condition searched. Information retrieval brings the solution to overcome this problem.This research is aimed to develop information text retrieval for the title of the final project and calculate the similarity between document using vector space model. The system will automatically indexecah terms inside document on offline mode and will retrieve information on real time mode. The retrieveal process will begin by taking query from user, then removingthe stop word . Then the system will calculate the similarityof query with the documents represented by index value of each term.. The output will show the the most relevant documentthat has the biggest simalirity value, followed by the other adocuments that have smaller similarity value. From the testing by applying "android" keyword, the system shows four documents ordered by simalirty value descending. Document with docId 3 has simalirity value 0.9512, docId 4 has simalirity value 0.5020, docId 2 has simalirity value 0.2671 and docId 8 has simalirity value 0.1522.
Permasalahan yang ada pada server untuk layanan video call yaitu penggunaan server biasanya menggunakan PC yang telah terinstall FreePBX dan diperlukan beberapa perangkat keras yang harus disediakan seperti CPU dengan spesifikasi memory yang digunakan 312 MB, CPU 800 MHz Pentium III. Terdapat alternatif untuk membangun server dengan spesifikasi yang lebih baik dari CPU Konvensional dalam menunjang layanan video call dengan menggunakan Mini PC. Salah satu jenis Mini PC yang populer yaitu Raspberry Pi. Berdasarkan hasil penelitian perbandingan dua server Mini PC mampu melayani kapasitas pelanggan pada resolusi video untuk codec H264. Dua server Mini PC mampu melayani komunikasi video call sebanyak 10 client dengan penggunaan CPU dan RAM pada Raspberry Pi 4 dibandingkan Raspberry Pi 3 dengan rata-rata penggunaan CPU 39.8% dan RAM Usage 282 MB dilihat menggunakan perintah HTOP pada putty. Penentuan jumlah kapasitas pengguna ditentukan berdasarkan jumlah client yang berkomunikasi secara bersamaan, dan penggunaan CPU serta RAM pada Mini PC.
Voice over Internet Protocol (juga disebut VoIP, IP Telephony, Internet telephony atau Digital Phone) adalah teknologi yang memungkinkan percakapan suara jarak jauh melalui media internet. Data suara diubah menjadi kode digital dan dialirkan melalui jaringan yang mengirimkan paket-paket data, dan bukan lewat sirkuit analog telepon biasa. Dalam komunikasi VoIP, pemakai melakukan hubungan telepon melalui terminal yang berupa PC atau telepon biasa. Dengan bertelepon menggunakan VoIP, banyak keuntungan yang dapat diambil diantaranya adalah dari segi biaya jelas lebih murah dari tarif telepon tradisional, karena jaringan IP bersifat global. IP Phone dapat di tambah, dipindah dan di ubah. Hal ini karena VoIP dapat dipasang di sembarang ethernet dan IP address, tidak seperti telepon konvensional yang harus mempunyai port tersendiri di Sentral atau PBX (Private branch exchange). Dalam penelitian ini mengimplementasikan keterhubungan antar server menggunakan single board computer yang di install sistem operasi Elastix yang bertujuan untuk mengimplementasikan prefix untuk antar server dan menggunakan beberapa codec audio. Hasil penelitian telepon menggunakan prefix dan tanpa prefix sebanyak 6 client atau 3 pasng panggilan secara bersamaan nilai packet loss tertinggi pada codec speex dengan prefix sebesar 2,34%. Nilai bandwidth tertinggi yang digunakan adalah dengan prefix codec PCMU dengan rata-rata 82,3 Kbps dan tanpa prefix 79,3 Kbps. Kata kunci : Server, VoIP, IP Telphony, Internet telephony, Digital Phone, IP Address, PBX, Codec, Prefix.
A laser rangefinder is a device that uses laser light to determine the distance of an object. The working principle of this laser rangefinder is that the laser beam that is emitted to the object will be reflected back to the rangefinder, and the required propagation time of laser beam will be calculated to get the distance value. In this study, a laser rangefinder system was designed to be used as monitoring of obstacle height between the line of sight of a microwave communication link using a quadcopter, which is used as a top-viewer picture taker. The quadcopter was used as a device to carry the laser rangefinder to measure the obstacle height between the location points of near-end and farend. The obstacle height reading results were transmitted using a 5.8 GHz wireless transceiver to the monitoring location in real time. The data received were then processed to be displayed in the form of obstacle height graph as a function of the line of sight communication distance. The test results show that the implementation of laser rangefinder technology has an accuracy of more than 90%.
Nutrient content and efficacy of the oyster mushroom has a high protein with a complete amino acids, including essential amino acids needed manusia.Selain itutuna oyster contains vitamins B1, B2 and some mineral salts of the elements Ca, P, Fe, Na and K . The fiber content of 7.4% until the mushrooms start of 27.6% is very good for digestion. While the meatballs are generally the typical food of the city of Malang are usually made from raw material although recent beef can also be made from raw materials of fish, chicken and mushroom. Apart easily cultivated oyster mushrooms also are cheap and plentiful and can be purchased at any place. Communities with lower economic levels can utilize adequate nutrition by consuming the mushrooms. Making meatballs from the basic ingredients of oyster mushrooms are also very easy to manufacture so diharapkakn could be an alternative to improve nutrition can also be developed to increase revenues when produced as meatballs mushrooms. Pre-test results showed that before the training participants still do not understand about the material with a mean value of 1.92. After carrying out training post test mean value becomes 3.75 This means participants' understanding of the material provided increased 98.5135%. This shows that the community service activities managed to improve the knowledge and skills of participants in the process recipe meatballs made from fresh oyster mushrooms.
Along with the development of the era, analog telephones have been replaced by IP Phones whose communication range can be wider and more flexible. Therefore, analog telephones are almost forgotten because of the limited communication range. With the addition of ITG (Internet Telephony Gateway) then analog telephones can communicate in VoIP networks. This research will discuss the analysis of voice quality in the communication process between telephone sets via ITG in a VoIP network based on the shape of the input and output, the amplitude response to frequency changes and the delay. Data retrieval is done by using a transmission test set as a substitute for human voice and knowing the amplitude value generated every time there is a change in frequency and an oscilloscope as a tool to determine the shape of the input and output waves as well as the delay. The results of this study indicate that delay generated by communication between analog telephones is <1 ms. When viewed from the form of the information signal generated from communication between telephone sets, that is, the shape of the input and output information signals are both sines, so it can be said that the information signal has not decreased in quality. The amplitude response resulting from frequency changes in communication between analog telephones is, the greater the value of the communication frequency.
The honey pineapple fruit (Ananas comous(L) Merr) is a fruit that is produced by Indonesian farmers. The sweet flavour of the honey pineapple depends on the water content level in the honey pineapple. The honey pineapple is a fruit that spoils easily. The storage period of the pineapple is between 1-7 days with a temperature of under 220C. The objective of this research is to identify the characteristics of probiotic fermented drinks made from the honey pineapple fruit, with the addition of spices such as ginger, cinnamon, and a percentage of palm sugar. There are two treatments in processing, based on the ratio of added ingredients, P1 = 60%pineapple fruit; 20% cane sugar; 10% ginger; 10% cinnamon, P2 = 60%pineapple fruit; 25% cane sugar; 10% ginger; 5% cinnamon. The observed variables are the pH of the drink and the temperature during the hour of observation. The measured test standard was adjusted to the SNI (Indonesian National Standard) 3719-2014 of produced fruit juice on the quality of fruit juice drinks, with the provision of having a distinct smell, flavour, and colour in normal conditions. The results organoleptically obtained result was that the percentage of palm sugar during the third and fifth measurement hour had a high score from 10 panellists, which was a level (4) strong smell with the duration of the ripening day. The pH level test did not differ much in P1(20% palm sugar) and P2(25% palm sugar) substituted in the pineapple fruit juice, which was 3.3 – 5.0.
Selama ini tersedia banyak metode manual yang digunakan untuk mengetahui kesegaran telur ayam misalnya memanfaatkan sinar matahari atau senter untuk menyinari telur di tempat gelap lalu melihat isi dari telur ayam untuk disortir. Proses yang sama juga telah dilakukan peternak atau pedagang kelontong untuk mengurutkan telur ayam berdasarkan kualitasnya. Tujuan dari penelitian ini adalah untuk membuat alat deteksi telur ayam menggunakan konveyor, sensor LDR (Light Dependent Resistor),lampu, LCD (Liquid Crystal Display), motor servo, modul esp8266 dan Mikrokontroler Arduino Mega sebagai prosesor. Hasil kinerja perangkat ini berpengaruh dari kondisi ayam telur yang akan dideteksi. Hasil dari penelitian ini, alat ini memiliki akurasi sebesar 95 % dalam mendeteksi kualitas telur, dimana sensor LDR menunjukkan nilai ADC sebesar < 260 untuk indikator kualitas telur baik sedangkan, nilai ADC sebesar lebih dari >26 untuk indikator kualitas telur buruk. Setelah telur dideteksi, servo akan mengarahkan telur ayam berkualitas baik ke arah kanan dan telur ayam berkualitas buruk diarahkan ke kiri. Pengiriman notifikasi dan informasi ke aplikasi website dilakukan secara online dan real time, dan diperlukan jaringan internet yang baik. Waktu yang diperlukan sistem dalam mengirimkan data dari saat sistem mendeteksi telur hingga muncul pada website adalah sebesar 20 – 50 ms, sesuai standar ITU-T.
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