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Abstrak :
ABSTRACT
This Study uses on analysis factor that aim to find out the main factors that influence the public interest to become the driver of PT GO-Jek Indonesia. The result of analysis using SPSS 20 has provided envidence that the variables Sharing 1 Revenue 2, Surge Pricing 2, Surge Pricing 3, Surge Pricing 4, and Accessibility 4 are variables that are important to gain attention in influencing the public interest to be GO-Jek driver. Meanwhile, the variables: Income 1 Income 3 Accessibility 1 Accessibility 2 accessibility 3, For Outcome 2, Share Result 3 Sharing 3, and Surge Pricing 1 is variables that are not included in the explanatory factor main act as auxiliary factor for major factor.

Abstrak :
Telah dilakukan penelitian tentang kepadatan dan indeks makanan terbesar kerang kima Tridacna maxima di perairan Pulau Pasumpahan dari bulai Juni-Oktober 2003. Lokasi pencuplikan kerang T. maxima dibagi atas tiga strata yaitu strata I (sebelah barat Pulau Pasumpahan yang terdiri dari rataan karang dengan padang lamun yang banyak), strata II ( sebelah utara Pulau Pasumpahan yang terdiri dari rataan karang yang didominasi oleh makroaiga) dan strata III (sebelah timur Pulau Pasumpahan yang terdiri dari ekosistem mangrove). Pada masing-masing strata diambil tiga individu kerang T. maxima. Kerang yang didapatkan diambil lambungnya kemudian isi lambung kerang T. maxima dianalisis. Hasil penelitian didapatkan bahwa komposisi makanan alami kerang T. maxima yaitu fitoplankton dan zooplankton. Berdasarkan strata pencuplikan sampel kepadatan makanan alami kerang T. maxima terbesar didapatkan pada strata III yaitu 1813,54 individu plankton/individu kerang dan terendah strata II yaitu 1256,52 individu plankton/individu kerang. Kepadatan makanan alami kerang T. maxima tertinggi berdasarkan kelas yaitu Bacillariophyceae, kemudian diikuti kelas Crustaceae dan terendah kelas Rotifera, Nilai indeks makanan terbesar yang tertinggi didapatkan dari kelas BaciHariophyceae yaitu 30,47dan terendah kelas Rotifera yaitu 0,93. Dari nilai indeks makanan terbesar didapatkan bahwa makanan utama kerang T. maxima adalah plankton dari kelas Bacillariophyeceae dan Crustacea.

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The Density And Index Of Preponderance Of The Giant Clam (Tridacna Maxima) In The Water Pasumpahan Island, Padang City, West Sumetera. The research has been done about the density and index of preponderance of the giant clam Tridacna maxima in the water Pasumpahan Island from June to October in 2003. The giant clam T. maxima colletion sites in the water Pasumpahan Island were divided three strata i, e. strata I ( at west Pasumapahan Island still have coral reef with seagrass), strata II (at north Pasumapahan Island which the coral reef was dominated by macro algae), strata III (at east Pasumpahan Island with mangrove ecosystem). At each strata the giant clam T. maxima were collected hree T. maxima. The giant clam was taken its stomach and then the stomach of giant clam were analysed. Results of the research showed that the composition of the natural food giant clam were phytoplankton and zooplankton. Based on the samples colletion mat the highest density from natural food of giant clam T. maxima were found at strata III 1813.54 plankton/ shell individu and the lowest density of natural food of giant clam T, maxima were 1256.52 plankton/shell individu at strata II. The highest density of natural food of giant clam T. maxima based on class were Bacillariophyceae and then Crustacea and the lowest density were Rotifera. The highest index of preponderance was found from Bacillariophyceae (30.47) and the lowest were Rotifera (0.93). Food preponderance index was calculed to indicate that the phytoplankton of Bacillariophyceae (30.47) and Crustacea (27.41) were the most preference food by T. maxima.

Abstrak :
Baground: the optimal management of lower calyceal stones is still controversial, because no single method is suitable for the removal of all lower calyceal stones. Minimally invasive procedures such as extracorporeal shock wave lithotrispy (ESWL), percutaneous nephrolithotomy (PNCL) and flexible ureteroscopy (fURS) are the therapautic methods for lower calyceal stones. the aim of this study was to identify the optimal management of 10-20 mm lower pole stones. Methods : a meta-analysis of cohort studies published before July 2016 was performed from Medline and Cochrane databases. Management of 10-20 mm lower pole stone treated by fURS, ESWL and PCNL with follow-up of residual stones in 1-3 months after procedure were include and urinary stone in other location and size were exclude. A fixed-effects model with Mantzel-Haenzel method was used to calculate the I2 statistic. All analyses were performed with review manager 5.3. Result : we analized 8 cohort studies. The stone free rate from 958 patient (271 PCNL, 174 fURS and 513 ESWL), 3 months after operation, was 90.8% (246/271) after PCNL; 75.3% (131/174) after fURS; and 64.7% (332/513)after ESWL. Base on stone free rate in 10-20 mm lower pole stone following management, PCNL is better than fURS (overall RR was 1.32 (95% CI 1.13-1.55) ; p<0.001 and I2=57%) and ESWL (overall risk ratio 1.42 (95% CI.30-1.55); p=<0.001 and I2=85%). But if we compare between fURS and ESWL, fURS is better than ESWL base on stone free rate in 10-20 mm lower pole stone management with overall RR 1.16 (95% CI 1.04-1.30; p=0.01 and I2=40%). Conclusion: percutaneous nephrolithotomy provided a higher stone free rate than fURS and ESWL. This meta-analysis may help urologist in makin decision of intervention in 10-20mm lower pole stone management.