Judul: Pengaruh Video Bit-rate dan Buffer terhadap Kinerja Progressive Download pada Wireless LAN
Abstrak: Progressive download or HTTP-streaming is a method of sending a file (audio or video) via web server. Progressive download combines the advantages of streaming mode and download mode in terms of time and bandwidth. Progressive download inherets the benefits of download in term of bit-rate utilization and the benefits of streaming in terms of time utilization. It allows the download at much lower bit-rate than the streaming mode and much shorter waiting time than the download mode. Another advantage of progressive download does not require a special streaming server. This research is using video bitrate and buffer as test parameters. Sizes of the video bit-rate are 256 kbps, 512 kbps, 768 kbps and 1024 kbps and the buffer sizes are 1 second, 2 seconds, 3 seconds, 4 seconds, and 5 seconds. Buffer size is set on the media player used by the client. The experiment result shows that the network environment that is needed to support optimum progressive download which has video resolution 640 x 480 pixel are 256 kbps of bitrate and 3 seconds of buffer.
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Judul: Analisis Pengaruh Video Bit-Rate dan Resolusi Video terhadap Kinerja Live Streaming
Abstrak: The principle of live streaming is to deliver recording media streaming directly from a device to a client who asks, without saving the recording media in to the client’s storage. The quality of live streaming is influenced by several factors, among which are the resolution, video bit-rate and network conditions. This research is expected to give a performance of live streaming technology to limit the resolution and video bit-rate of 802.11 g wireless network for two different players. Video results processed at the broadcaster recording using MPEG-4 H.264 and AAC audio format. The resolutions used are 176x144 pixel, 320x240 pixel and 640x480 pixel. Video bit-rates used are 256 Kbps, 512 Kbps, 768 Kbps and 1024 Kbps. The analysis was done by performing capture streaming service on the server side. The analysis includes the performance parameters of throughput and delay packet. The result is video with resolution 320x240 pixel is the best resolution and is able to adapt to different video bit-rate. However, the result in the network load is not too different both from the broadcasters to the server or from server to the client.
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Judul: Karakteristik Anatomi Skelet Kepala Badak Jawa (Rhinoceros sondaicus)
Abstrak: Badak jawa (Rhinoceros sondaicus) adalah spesies badak bercula satu yang hidup di Taman Nasional Ujung Kulon (TNUK), Indonesia. Tujuan penelitian ini adalah mempelajari karakteristik anatomi skelet kepala badak jawa yang dikaitkan dengan perilakunya. Penelitian dilakukan dengan mengamati struktur dua buah skelet kepala badak jawa jantan. Skelet kepala diukur dimensi dan volume cavum cranii, dipelajari struktur dan formula giginya, didokumentasi, serta dipindai dengan CT scan. Penamaan unsur-unsur anatomi berdasarkan Nomina Anatomica Veterinaria 2015 dan kemudian struktur anatominya dibandingkan dengan pustaka pada hewan-hewan lain. Secara umum skelet kepala badak jawa memiliki pars splanchnocranii yang sangat berkembang, pars neurocranii yang meninggi ke posterior, dan atap kepala yang konkaf dan tebal disertai simus-sinus di profundal-nya. Skelet kepala badak jawa memiliki permukaan yang kasar pada os incisivum, os nasale, os frontale, dan os maxilla serta memiliki bungkul di os lacrimale dan rigi di os zygomaticum. Selain itu, hewan ini memiliki crista nuchae yang terletak di dorsoanterior condylus occipitalis dan squama occipitalis yang luas dengan persendian occipitoatlantis yang luas di sisi dorsal-nya. Arcus zygomaticus dan fossa temporalis pada hewan ini luas dan berkembang serta angulus mandibularis dan permukaan persendian rahang bawah pada os temporale yang luas. Bagian-bagian tersebut beradaptasi untuk mendukung perilaku badak jawa dalam mencari makan dan bertahan hidup….
Keyword: Javan Rhino, Rhinoceros sondaicus, Skull, Anatomy, Skull anatomy, Rhino behavior, Brain cavity, Internal structure, Darsal roof