Judul: Implementasi proyek six sigma dalam pemeliharaan ayam spf (specified pathogen free) di PT Bio Farma (persero) Bandung
Abstrak: Tulisan ini menyajikan kemungkinan implementasi manajemen proyek Six Sigma dalam mengoptimalkan manajemen pemeliharaan ayam SPF untuk menghasilkan telur tertunas sebagai bahan baku pembuatan vaksin campak di PT. Bio Farma (Persero) Bandung. Implementasi proyek ini dilakukan dengan mengintegrasikan konsep Six Sigma ke dalam manajemen proses pemeliharaan ayam SPF, dengan metode-metode DMAIC, yang meliputi (1) Pendefinisian (Define), (2) Pengukuran (Measure), (3) Analisis (Analyse), (4) Perbaikan (Improve) dan (5) Pengontrolan (Control). Sedangkan untuk mengetahui apakah produk telur bertunas tersebut dijamin kualitasnya maka dilakukan pengukuran terhadap (1) kapabilitas sigma, (2) DPMO (Defect Per Million Oppurtunity) dan (3) Critical to Quality (CTQ), yang kemudian dikorelasikan dengan target kinerja yang harus dicapai oleh setiap level organisasi Six Sigma Hasil yang dicapai menunjukkan bahwa proyek Six Sigma dengan metode DMAIC dapat diimplementasikan dalam peningkatan kualitas dan kuantitas produksi pemeliharaan ayam SPF di PT. Bio Farma (Persero) Bandung dengan 15 titik kritis permasalahan (CTQ) yang harus diperhatikan dalam peningkatan kinerja.
Keyword: six sigma, specific pathogen free (SPF) chicken, chicken

Judul: Aplikasi Six Sigma DMAIC sebagai Metode Pengendalian dan Perbaikan Kualitas Produk Susu Cair Steril.
Abstrak: Banyaknya kasus produk substandar yang harus dibuang membuat perusahaan pengolahan susu terus berupaya mengendalikan proses untuk perbaikan kualitas susu mencapai standar minimal yang diinginkan. Perbaikan dan pengendalian mutu produk dilakukan untuk mengurangi jumlah produk substandar. Metode six sigma digunakan untuk meningkatkan kualitas produk menuju target 3.4 kegagalan per sejuta kesempatan transaksi produk barang. Metode six sigma memiliki lima langkah, yaitu langkah-langkah Define, Measure, Analyze, Improve, Control (DMAIC). Metode DMAIC akan dilakukan menggunakan beberapa alat bantu peningkatan kualitas, yaitu diagram tabel CTQ (Critical to Quality), diagram pareto, diagram ishikawa, true and false, why-why analysis, dan FMEA (Failure Mode and Effect Analyze). Hasil analisis menunjukkan bahwa kerusakan lecet alufo merupakan faktor utama penyebab terjadinya produk substandar. Perbaikan terhadap penurunan kerusakan lecet alufo dapat menaikkan nilai kapabilitas proses dari 4.223 sigma menjadi 4.30 sigma.
Keyword: DMAIC, Mutu, Produk substandar, Six Sigma, Susu Cair Steril

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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