Investigation of an elevator dispatcher system

To provide an efficient elevator system, a variety of diverse and sometimes conflicting constraints have to be solved. This paper focuses on using discrete event simulation as a means to model and explore elevator dispatching strategies. Witness simulation software has been used as a test-bed for model building, simulation and some experimentation. Model building using Witness model elements is described in detail followed by two different elevator call strategies. The main steps in the methodology are described with reference to a single elevator servicing a five-storey office building. The elevator call strategies are simulated and results compared. It was found that the data set significantly skews the results and overshadows any efficiency gains that might be possible from the different dispatching strategies. The paper concludes with the need to carefully select the data set as the basis for simulation comparisons and outlines future work required

Effect of Different Phosphorus Levels on Growth and Yield of Wheat under Water Stress Conditions

Water stress and low phosphorus availability are the limiting factors for growth and yield of wheat. Five different phosphorus levels (P = 0, 30, 60, 90, 120 kg ha-1) with three water stress levels (I1 = well-irrigated, I2 = water stress at reproductive stage and I3 = water stress both at vegetative + reproductive stages) were applied to check their effects on growth and yield of wheat. Higher application of phosphorus with optimum irrigation showed significant effect on growth of wheat. Higher phosphorus application rate compensate the effect of water stress conditions both at vegetative and reproductive stages. Drought stress at vegetative + reproductive stages was more drastically affected as compared to stress at reproductive stage. Lower phosphorus application rate with water stress caused maximum reduction in plant height, number of tillers, spike length, number of grains spike-1, 1000 grains weight, grain yield and straw yield. It was concluded that application of phosphorus at higher rate could compensate drastic effect of water stress. On overall performance, application of phosphorus at the rate of 120 kg ha-1 showed better results under water stress conditions as compared to other phosphorus levels. Keywords: - wheat, water stress, phosphorus, growth, yield

PENINGKATAN SKILL WIRAUSAHA MAHASISWA MELALUI KEGIATAN MAGANG PADA KELOMPOK TANI ETAWA

Abstrak: Metode pembelajaran kampus selama ini dianggap belum sinkron dengan konsidi dunia nyata. Teori yang diperoleh mahasiswa masih jauh ketinggalan dengan kebutuhan dunia kerja yang terus berkembang sesuai dengan kemajuan teknologi, tuntutan konsumen, dan perubahan lingkungan. Kegiatan magang sangat dibutuhkan mahasiswa dalam melihat tren pasar dan membuka wawasan mahasiswa dalam mengaplikasilakan ilmu dan teknologi yang diperoleh dalam bangku kuliah. Tujuan dari kegiatan magang mahasiswa adalah memberikan kesempatan kepada mahasiswa untuk berkecimpung langsung pada dunia industri (usaha kambing perah) selama 6 bulan untuk mengasah hardskill dan softsill kewirausahaan yang teorinya telah diperoleh dari bangku kuliah. Hasil evaluasi menunjukkan bahwa terjadi peningkatan pemahaman mahasiswa terkait manajemen kebersihan kandang kambing, manajemen pakan, manajemen kesehatan, dan teknik pemerasan susu etawa. Peningkatan minat mahasiswa untuk menggeluti usaha peternakan kambing etawa dipicu antar lain oleh penerapan IPTEK pada pakan konsentrat yaitu, mesin pencampur pakan konsentrat yang mempermudah mempermudah kegiatan pencampuan bahan-bahan pakan serta meringankan beban kerja dengan hasil campuran pakan konsentrat yang lebih baik.Abstract: Campus learning methods have thus far been considered out of sync with real-world conditions. The theory acquired by students still lags far behind the requirements of the working world, which continues to evolve in response to technological advances, consumer demands, and environmental changes. Internship activities are greatly needed by students to observe market trends and broaden their insights in applying the knowledge and technology acquired in college. The purpose of student internships is to provide opportunities for students to be directly involved in the industrial world (specifically the dairy goat business) for 6 months, honing both entrepreneurial hard skills and soft skills, the theoretical foundation for which has been obtained from college. The evaluation results indicate an improvement in students' comprehension of goat pen cleanliness management, feed management, health management, and etawa milk extraction techniques. The heightened interest among students in the etawa goat breeding business was triggered, among other factors, by the implementation of science and technology in the concentration of feed. This includes the use of concentrate feed mixing machines, which facilitate the blending of feed ingredients and lighten the workload, resulting in an improved mixture of concentrate feed