Judul: Pengembangan Pasar Produkl Olahan Ubi Jalar dengan Metode Human-Centered Design
Abstrak: Tujuan dari penelitian ini adalah memberikan nilai tambah pada tepung ubi jalar dengan mengidentifikasi permasalahan yang dapat diselesaikan oleh produk olahan ubi jalar serta merancang model bisnis yang sesuai untuk menyelesaikan masalah tersebut. Metode yang digunakan adalah Human-Centered Design (HCD). Tahapan dari penelitian adalah inspirasi, yang dilakukan dengan observasi dan eksplorasi masalah, ideasi, prototipe, pengumpulan umpan balik, dan verifikasi. Penderita diabetes melitus tipe 2 seringkali kesulitan dalam menjaga pola hidp yang baik karena keterbatasan waktu, kesulitan mencari makanan yang tepat, rasa lapar yang berlebih, dan terbatasnya produk di pasaran. Hal ini membuat mereka membutuhkan produk yang dapat menjaga gula darahnya stabil, mengenyangkan dalam waktu yang cukup lama, praktis, rendah kalori dan tinggi serat. Umpan balik dari kukis ubi jalar menunjukkan kesesuaian dengan pelanggan dan harga penjualan sebesar Rp 5.000,- untuk berat bersih 45 gram
Keyword: Human-Centered Design, sweet potato, type 2 diabetes mellitus, cookies

Judul: Modifikasi Fisik Tepung Ubi Jalar dan Aplikasinya dalam Pengembangan Produk Bihun
Abstrak: Diabetes mellitus is a degenerative disease that can be prevented by adjusting the diet either by consume low glycemic index food. Heat moisture treatment-cooling is a process that can reduce the glycemic index of a food products. The aims of this research are to determine sweet potatoes suitability for sweet potato bihon production and to see the effect of heat moisture treatment-cooling for reducing glycemic index of sweet potato bihon. Three varieties of sweet potatoes are used, i.e. Ayamurasaki, Beta-1, and Sawentar. Modification is conducted by heat moisture treatment-cooling two cycles with temperature of heating (121oC) and temperature of cooling 4 °C. Bihon was made by a single screw extruder with die diameter of 0.6 mm and temperature of 92oC. Analysis were conducted on the chemical, physical, functional and organoleptic properties. Ayamurasaki varieties is selected products based on organoleptic and physical properties testing. Glycemic index of native and modified Ayamurasaki bihon are 57.2 and 50.7 respectively.
Keyword: sweet potato, heat moisture treatment-cooling, glycemic index, bihon

Judul: Thermal Characteristics and Dynamics of Tropical Cyclone over Western North Pacific Ocean: A Case Study of Typhoon Songda (Chedeng) 2011
Abstrak: The frequent occasion of Tropical Cyclone (TC) over Western North Pacific (WNP) Ocean lies from 10˚N to 26˚N and 121˚E to 170˚E. Sources of TC development come from warm ocean temperature where latent heat is released during condensation processes and subsequently concentrated in the boundary layer. Relative humidity at 850-700 hPa is responsible to produce the most intense storm. Meanwhile, weak vertical wind shear between 850-200 hPa is one of the dynamical factors that lead to the development of TC. Pressure level of 850-200 hPa is chosen to minimize the thermodynamic effect in the lower troposphere. Typhoon Songda (Chedeng in the Philippines) or TSC lasted from May 18th to 30th, 2011 and strengthened into powerful Super Typhoon stage between May 24th and 27th. Long curving track and the exhibition of all sequences of TC life cycle, TSC is then considered as an ideal case of TC. The objective of the study with case of TSC is to investigate the role of thermal characteristics and dynamics on TC intensity. The research is carried out by using Advanced Research of Weather Research and Forecasting model (WRF ARW model) version 3.3. Two domains are employed in the model. The first domain situate from 02˚N to 40˚N and 118˚E to 149˚E and cover spatial resolution () of 33.1 km. The second domain situate from 09˚N to 27˚N and 119˚E to 132˚E with of 11 km. Timestep of the model () is 120 seconds. The model is supported by the following physical parameterization, i.e., Yonsei University Scheme (YSU) in the boundary layer, Kain-Fritsch scheme (KF) in the cumulus, and WRF Single-Moment 3-class scheme in the microphysics. Initial meteorological condition prior to the formation of the cyclone is generated using WRF ARW standard-release model. Sensitivity of the model output is obtained from a selected single-parameter change scenarios, namely, 10 % to 20 % decrease and increase of wind shear initial data at 850-200 hPa, and by 10 % to 20 % decrease of relative humidity initial data at 850-700 hPa. The result showed that the negative correlations between wind shear and intensity are found in wind shear scenarios. Wind shears of 10 ms-1 which lead to strengthening of the wind intensity in the early period of Typhoon development are found in wind shear scenarios. The effect of wind shear changes on wind intensity is statistically significant in the 20 % wind shear scenarios. During mature stage, weak wind intensity occurred when wind shear increase as given in the WRF standard-release and the 20 % decreasing scenario. Different situation is found in the 20 % increasing scenario where wind shear tend to weak and lead to strong wind intensity at this stage. Meanwhile, the reduction of moisture supply at 850-700 hPa resulting from 20 % decreasing relative humidity play a major role in the weakening of wind intensity and reduces mechanical energy of the cycle process as much as 300 J kg-1.
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