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"Integrating computers into mathematical statistics courses allows students to simulate experiments and visualize their results, handle larger data sets, analyze data more quickly, and compare the results of classical methods of data analysis with those using alternative techniques. This text presents a concise introduction to the concepts of probability theory and mathematical statistics. The accompanying in-class and take-home computer laboratory activities reinforce the techniques introduced in the text and are accessible to students with little or no experience with Mathematica. These laboratory materials present applications in a variety of real-world settings, with data from epidemiology, environmental sciences, medicine, social sciences, physical sciences, manufacturing, engineering, marketing, and sports.Mathematica Laboratories for Mathematical "

"Penelitian ini bertujuan untuk memberikan gambaran hubungan antara intensitas bising dengan gangguan pendengaran terhadap pekerja.Penelitian dilakukan terhadap 349 responden di bagian Steel Melting dan Rolling Mills PT X pada bulan Maret - Juni 2014 menggunakan desain cross-sectional, data primer berupa hasil pengukuran intensitas bising dan audiogram, data sekunder berupa gambaran umum perusahaan. Hasil penelitian menunjukkan bahwa 52 responden (14,9%) mengalami gangguan pendengaran, responden yang mengalami gangguan pendengaran terbanyak yaitu sebesar 59,6% (31 responden) adalah responden yang bekerja di Area Steel Melting yang memiliki intensitas kebisingan >85 dB. Penelitian menunjukkan gangguan pendengaran tidak berhubungan dengan pajanan debu, riwayat penyakit Diabetes melitus dan riwayat penyakit Hipertensi (p-value>α(0,05). Untuk mencegah terjadinya gangguan pendengaran kepada pekerja lainnya, perlu dilakukan upaya pengendalian risiko dengan melakukan pengendalian teknis, pengendalian administratif dan perlindungan kepada pekerja yang bekerja di area tersebut.

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This study aims to provide an overview of the relationship between the intensity of noise with a hearing loss of workers. Study was conducted on 349 respondents at the Steel Melting and Rolling Mills PT X in March - June 2014 using cross-sectional design, the primary data in the form of noise intensity measurement results and results of audiometric measurement, secondary data from a general overview of the company. The results showed that 52 respondents (14.9%) had hearing loss, respondents who have a hearing loss that is equal to 59.6% (31 respondents) of respondents who work in Steel Melting areas that have noise intensity > 85 dB. Research showed hearing loss is not related to dust exposure, history of diabetes mellitus and a history of hypertension (p-value> α (0.05). To prevent hearing loss to other workers, risk control efforts should be made to perform technical control, control administrative and protection to employees who work in the area."

"ABSTRAKPada operasi sistem tenaga listrik jatuh tegangan menjadi salah satu poin penting yang harus diperhatikan. Ketika tegangan pada sistem mencapai titik kritisnya seiring dengan kenaikan beban-beban, dapat menyababkan sistem menjadi runtuh. Dan terdapat faktor lain yang dapat menyebabkan sistem runtuh, pelepasan pembangkit dan saluran transmisi. Permasalahan tersebut dapat diselesaikan dengan penggunaan STATCOM pada sistem tenaga listrik. Dalam kasus ini subsistem Bekasi akan dianalisis menggunakan metode kurva P-V. Pada simulasi kali ini menunjukan subsistem yang telah terpasang STATCOM akan mengalami peningkatan kapasitas transfer dan tegangan kritisnya. Dimana kapasitas STATCOM akan memiliki pengaruh terhadap kompensasi daya reaktif yang hilang akibat terjadinya kegagalan pada sistem. Dimana ketika kelilangan pembangkit dengan kapasitas 310MW dan dikompensasi dengan 100MVar akan mengalami kenaikan kapasitas transfer sebesar 24.51%.

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ABSTRACTIn the operation of the electric power system, voltage stability becomes one of the important points that must be considered. When the voltage in the system reaches its critical point along with the increase in loads, it can cause the system to collapse. And there are other factors that can cause the system to collapse, the release of power plants and transmission lines. These problems can be solved by using STATCOM on electric power systems. In this case the Bekasi subsystem will be analyzed using the P-V curve method. In this simulation, the subsystems that have been installed with STATCOM show an increase in transfer capacity and critical point."