This study aims to determine the effect of sales skills and sales behavior on sales performance. The population in this study was 32 salesforces of PT. Nasmoco Pemuda Semarang. The data used in this study are primary data obtained using questionnaires, interviews and observations. Data analysis using linear regression. The results of the study indicate that sales skills has a positive and significant effect on the sales performance. The sales behavior has a positive and significant effect on the sales performance. Simultaneously, the sales skills and sales behavior have a positive and significant effect on the sales performance. To improve sales performance, salespeople are expected to further increase their sales behavior because it is a more dominant variable. To increase sales behavior, salespeople are expected to be more responsive to listen to what prospective buyers say, not be proactive.Penelitian ini bertujuan untuk mengetahui pengaruh keahlian penjualan dan perilaku penjualan terhadap kinerja penjualan. Populasi dalam penelitian ini sebanyak 32 tenaga penjual PT. Nasmoco Pemuda Semarang. Data yang digunakan dalam penelitian ini adalah data primer yang di peroleh menggunakan kuesioner, wawancara dan observasi. Analisis data menggunakan regresi linier. Hasil penelitian menunjukkan bahwa keahlian penjualan berpengaruh positif dan signifikan terhadap kinerja penjualan. Perilaku penjualan berpengaruh positif dan signifikan terhadap kinerja penjualan. Secara simultan, keahlian penjualan dan perilaku penjualan bersama-sama memiliki pengaruh yang positif dan signifikan terhadap kinerja penjualan. Sebaiknya dalam meningkatkan kinerja penjualan seharusnya tenaga penjual lebih meningkatkan lagi perilaku penjualannya karena merupakan variabel yang lebih dominan pengaruhnya. Untuk meningkatkan perilaku penjualan diharapkan tenaga penjual agar lebih responsif mendengarkan apa yang dikatakan calon pembeli, tidak bersikap proaktif.

The world's energy needs increase in line with population growth. One alternative to overcome this problem is the construction of a nuclear power plant, a source of energy that is cheap, clean, and safe. Malaysia has a plan to construct nuclear power plants by 2025, which is located close to Indonesian waters. This study aimed to determine the distribution model of 137 Cs radionuclide released by the nuclear power plant in the event of a leak in east coast of Peninsular Malaysia and its impact on the presence of 137 Cs in Indonesian waters. A quantitative method was used in this study with a scenario 2D modeling using hydrodynamics module and transport module in MIKE software. The results showed that the highest concentration of 137 Cs would be found in the area around the nuclear power plant with a value of 10 11 PBq/m 3 , then it would decrease through diffusion and advection processes. On the 15 th day, the spread of 137 Cs would reach Indonesian waters with a distance of up to 76 km and would expand on the 30 th day with a distance of up to 130 km from the released source. The movement of 137 Cs follows the dominant current pattern due to its nature. The presence of 137 Cs in Indonesian waters after the 15 th and 30 th days would reach a value of 1 Bq/m 3 due to advection and diffusion processes.