Kualitas merupakan salah satu faktor penting penentu keberhasilan suatu perusahaan dalam menguasai persaingan. Pada Painting Shop Karawang Plant 1 PT Toyota Motor Manufacturing Indonesia, kualitas diukur melalui OK Ratio, yaitu perbandingan antara jumlah unit yang sesuai standar dengan total unit yang diproduksi. Pada tahun 2017, OK Ratio Painting Shop belum mencapai target. Salah satu defect yang berkontribusi besar terhadap OK Ratio adalah dust seed yang terjadi pada area front door opening. Penelitian dilakukan dengan menggunakan Kaizen melalui siklus PDCA dengan menggunakan seven tools of quality dan 5 why analysis. Diketahui bahwa terdapat tiga akar penyebab defect dust seed: tidak terdapat downflow pada area moisture sanding, jig yang digunakan masih kotor akibat pencucian yang tidak efektif dan jig digunakan secara berulang tanpa dibersihkan. Dengan melakukan perbaikan sesuai dengan akar permasalahan yang telah ditemukan, didapatkan hasil reject dust seed pada area front door opening berkurang sebanyak 35.29% dan proses repair touch up 2K berkurang sebesar 53.6%. Ditetapkan standar untuk mendukung berjalannya perbaikan yang dilakukan, yaitu standar kerja proses airblow jig pada area jig handling untuk memastikan jig yang akan dipakai bebas kontaminan, standar kerja proses vacuum cleaning untuk memastikan unit bersih dari kontaminan sebelum memasuki spray booth, serta standar perawatan dust catcher.
PurposeJudging bias is ironically an inherent risk in every competition, which might threaten the fairness and legitimacy of the competition. The patriotism effect represents one source of judging bias as the judge favors contestants who share the same sentiments, such as the nationalistic, racial, or cultural aspects. This study attempts to explore this type of judging bias in a university student competition. In addition, this study tries to expand the literature on judging bias by proposing the term universitarian bias as the judge is suspected to give a higher score to contestants from the same university.Design/methodology/approachThe association rule of data mining is used to accomplish the objective of the study. To demonstrate the applicability of the method, the data set from the annual national university student competition in Indonesia is exploited.FindingsThe result strongly discovers that the universitarian bias is likely to be present. Some recommendations are also provided in order to minimize the bias that might happen again in the future.Practical implicationsAs the implication of the presence of the universitarian bias, the committee should remove all the university features attributed to the participants. This endeavor is expected to minimize the universitarian bias that might happen.Originality/valueThis research is claimed to be the first attempt in implementing the data mining technique in the field of judging bias.
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