Judul: Penerapan Regresi Cox pada Lama Waktu Tunggu Lulusan Program Studi S1 Statistika IPB Memperoleh Pekerjaan Pertama.
Abstrak: The number of unemployment graduate students is increasing by 0.32 percent from February 2013 until February 2015 (BPS 2015). Institut Pertanian Bogor (IPB) as the university of Statistics graduates maker resulting in Statistics graduates that are needed in various work fields, but the company has qualification in selecting the workforce. Consequently Statistics program graduates tend to be in unemployment status because the amount of time for getting the uncertain first job. Therefore this research aim is to identify variables associated with the amount of waiting time of IPB’s Statistics undergraduates program for getting their first job and identify the relation between GPA and their first job field. The data used is primary data through questionnaires. The unemployment graduates that have not worked until the end of research time on April 2015 and continue their master study is called by censored data. The analysis relating to the amount of waiting time and censored data is survival analysis with Cox regression while correspondence analysis is used for knowing the relation between GPA and the first job. Variables associated with the amount of waiting time to obtain first job is sex and GPA in the 5% significance level. Correspondence analysis showed that the Ministry, Otoritas Jasa Keuangan (OJK), and Pertamina are works field of IPB’s Statistics program study graduates who have GPA greater or equal to 3.5.
Keyword: censored data, correspondence analysis, Cox regression, first job

Judul: Studi Pelacakan Alumni Departemen Statistika FMIPA IPB (Studi Kasus pada Angkatan 36-45)
Abstrak: Department of Statistics, Bogor Agricultural University (IPB) many top producing graduates that are spread throughout the field work. One indicator of success is the contribution of graduates of higher education in society and the development and engagement of alumni in the dynamics of the workplace. Alumni tracking studies can provide information about the profile of graduates of the Department of Statistics 36-45 IPB particular class (year in 1999-2008). Alumni are expected to provide information on the relevance of knowledge and skills (relationship between competencies acquired during the lectures with field work), the relationship between grade point average (GPA) of the waiting time work, field work of alumni present, the extent to which the use/ knowledge of statistics to the field of work. Adequacy analysis, interests, and purposes related to competencies Department of Statistics. Respondents who responded to this study of 204 respondents (40.8 %) of the total population of 500 respondents. Area of origin of respondents were mostly from the Greater Jakarta area by 43.1 %, driveways Admission Exam IPB (USMI) as much as 76 %, as many as 20.1 % of respondents have a High GPA (GPA ≥ 3.51), cum laude by 5 %. The average wait for a job for 2 months with an average salary of first job after being transformed to the present value of Rp 3,370,000.00. There is a tendency of working first salary differences between respondents who have a High GPA with a low GPA. Respondents gender pay gap also has a tendency of work the first time, respondents have a tendency of female sex work first salary higher than the respondents gender male. Predicate graduation also has the distinction of first salary job, graduation cum laude predicate has a higher salary than the predicate is very satisfying and fulfilling graduation. Field work consisted of alumi academia, finance, administration, research, and advertising. As many as 40 % of alumni working in the field of research. Alumni statistics also been doing moving work, 63.3 % among respondents had changed jobs done. Statistics have a role in the world of work, amounting to 38.6 % pretty much using statistical science in the workplace. Adequacy analysis, interests, and purposes related to competencies Department of Statistics. Competency skills survey design, experimental design, data management is widely used in the field of research work.
Keyword: purposes., interests, Adequacy analysis, tracking studies, Department of Statistics Bogor Agricultural University

Judul: Membran Komposit Kitosan-Zeolit untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Direct methanol fuel cell (DMFC) is a fuel cell that utilize methanol as the fuel source. The electrolyte membrane used in the DMFC system in this research was chitosan-zeolite composite membrane. The composite membrane was synthesized with chitosan-zeolite composition variation of 1:1, 1:2, 1:3, and 2:1. The membranes were analyzed by Fourier transform infrared spectrophotometer (FTIR) and scanning electron microscope, and for the specific gravity. Membrane performances were tested with methanol uptake, methanol permeability, conductivity, and potential difference in the DMFC system. The FTIR spectrum showed no formation of new functional groups inducating that the composite membrane was a result of physical mixing. Morphological analysis showed that the membrane was nonporous. Chitosan-zeolite 1:3 composite membrane had the highest specific gravity and methanol uptake, 1.4226 g/mL and 41.44%, respectively. The highest proton conductivity was showed by the 1:2 chitosanzeolite composite membrane, namely 7.2946× 10-7 S/cm. Based on this research results, chitosan-zeolite composite membrane can be applied in DMFC system.
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