sawit adalah salah satu komoditas pangan dan energi yang penting [1]. Selain itu, kelapa sawit juga merupakan perkebunan yang mempunyai produk sebagai salah satu komoditas ekspor utama di Indonesia. Salah satu produk kelapa sawit yaitu minyak kelapa sawit [2]. Minyak kelapa sawit adalah salah satu bahan pokok yang tingkat kebutuhannya selalu mengalami kenaikan setiap tahunnya. Badan Pusat Statistika (BPS) melaporkan bahwa rata-rata perkembangan konsumsi minyak kelapa sawit tingkat rumah tangga di Indonesia mengalami peningkatan sebesar 2,32 % per tahun selama periode 2015-2020 [3]. Kebutuhan konsumsi minyak kelapa sawit meningkat sejalan dengan peningkatan konsumsi minyak nabati di dunia [4]. Oleh karena itu, penjaminan kualitas

The formulation of the problem in this study is whether there is an effect of professionalism on employee work effectiveness. Is there an effect of intellectual intelligence on employee work effectiveness. Is there an influence of organizational culture on employee work effectiveness. Is there any influence of professionalism, intellectual intelligence and organizational culture on the work effectiveness of the employees of the PUPR Region I Medan Training Center. The purpose of this study was to determine and analyze the effect of professionalism on employee work effectiveness. The influence of intellectual intelligence on employee work effectiveness. The influence of organizational culture on employee work effectiveness. The influence of professionalism, intellectual intelligence and organizational culture on the work effectiveness of the employees of the PUPR Region I Medan Training Center. The sample in this study amounted to 53 people. The data analysis technique used in this research is descriptive analysis and multiple linear regression analysis. The results of this study explain that the intellectual intelligence variable has a positive and significant effect on employee work effectiveness. Professionalism and organizational culture variables do not have a positive and significant effect on employee work effectiveness. The variables of professionalism, intellectual intelligence and organizational culture have a positive and significant effect on the work effectiveness of the employees of the PUPR Region I Medan Training Center.

The formulation of the problem in this study are: How do supervision, employee commitment and work environment influence employee work productivity. This study aims to examine how the influence of supervision, employee commitment and work environment on employee work productivity. With total sampling technique, the sample in this study amounted to 35 people. Supervision variables partially have a positive effect on employee work productivity. Employee commitment   variable   partially   has   a   positive   effect   on   employee   work productivity. Work environment variables partially have a positive effect on employee  work productivity.  Supervision  variables,  employee  commitment  and work  environment  simultaneously   have  a  positive  and  significant  effect  on employee work productivity.

Vocational high school students are unusual to discussions in group to solve problems, because they get a curriculum that focuses on practice and industrial-oriented. This research aim so that vocational students can also become professionals in solving problems with discussions and practice. Jigsaw learning model is one of the methods of learning used in this research. Students can diagnose errors in one-phase electric motors through expert team discussions. This research took the data with pre-test and post-test, and also the practice test with the accuracy of diagnosing and repairing. The results showed the ability of students increased from the average value of 65.91 to 81.45 (23.58%).