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All Journal Journal of Engineering and Management in Industrial System Journal of Energy, Mechanical, Material and Manufacturing Engineering Sinteks
ING Wardana
Universitas Brawijaya
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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UPAYA PENINGKATAN PRODUKTIVITAS BERDASARKAN ANALISIS PENGARUH KESELAMATAN, KESEHATAN KERJA, DAN LINGKUNGAN (K3L) TERHADAP PRODUKTIVITAS TENAGA KERJA DI PABRIK GULA PT. KREBET BARU MALANG Sidi Na'ali; ING Wardana; Rudy Soenoko
Journal of Engineering and Management in Industrial System Vol 1, No 1 (2013)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (371.315 KB) | DOI: 10.21776/ub.jemis.2013.001.01.5

Abstract

In industrialization we need to improve productivity and efficiency which it helps to challenge and can produced high performance product. One of factor that influence productivity is about safety, healthy and environment where we work. We could said that because K3L could build competent, professional and skilled worker. This research measure about relationship between safety, healthy, and environment variable with productivity worker. We use Structural Equation Modeling (SEM) to examine data because with SEM, we will get simultaneous causality relationship between variable. With considering variable that influence in productivity, we can give some recommendation to improve productivity. Based on data and result we got some variable that give significant influence, such as: comprehension in vision and mission in K3L, fire extinguisher availability, safety sign utilization, K3L training, machine jig and fixture completeness, machine lay out and tool storage, machine and tool maintenance. Healthy variable that influence productivity is salary, scholarship, disable factor from worker, worker competence, optimize  polyclinic, optimize medical personal, accident assurance. Environment variable that influence productivity is  trash bin availability, good lighting, processing waste, good air circulation, safety from danger in work environment, good temperature, bathroom sink availability, and WC avalialbility.
Pemilihan Varietas Kedelai Indonesia Dengan Waktu Tanam Terhadap Hasil Produksi Untuk Memenuhi Permintaan Nelly Budiharti; Ing Wardana
Sinteks : Jurnal Teknik Vol 7 No 2 (2018): Vol.7 No.2 2018
Publisher : Sekolah Tinggi Teknik Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/97

Abstract

Banyak faktor untuk mendapatkan hasil produksi  yang  tinggi dalam budidaya kedelai Indonesia, antara lain pemilihan jenis varietas dengan waktu tanam. Tujuan  dari penelitian ini adalah :  Melakukan penanaman kedelai Indonesia dengan berbagai varietas dan berbagai waktu tanam dalam rangka untuk memenuhi kebutuhan akan komoditi kedelai. Penelitian ini dilakukan dengan cara eksperimen menggunakan 5 varietas unggul  yang ditanam di  kecamatan Tumpang, di kabupaten Malang, provinsi Jawa Timur, Indonesia dengan waktu tanam yang berbeda. Pengolahan dan Analisa data menggunakan desain eksperimen yaitu desain blok acak sempurna dengan tingkat kepercayaan 95 %. Hasil penelitian diperoleh bahwa penyebab hasil produksi yang berbeda bukan dikarenakan penggunaan varietas yang berbeda, melainkan masing-masing varietas mempunyai profil sendiri-sendiri. Kata – kata kunci : Varietas Kedelai, Waktu Tanam, Kedelai Indonesia, Hasil Produksi
Closed-form model for optimal SiO2 thickness at TiO2 interface in dye-sensitized solar cells Tulus Subagyo; Sobri; Willy Satrio Nugroho; Abdul Mudjib Sulaiman Wahid; ING Wardana
Journal of Energy, Mechanical, Material, and Manufacturing Engineering Vol. 11 No. 1 (2026)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v11i1.44685

Abstract

An analytical model is developed to examine the mechanical behavior of a SiO2 interlayer on TiO2 in dye-sensitized solar cells. The model accounts for thermal mismatch-induced stress and introduces a relaxation length to describe stress decay within the interlayer. Results show that stress is highly localized at the interface and decreases exponentially with depth, leading to elastic energy that increases with thickness and approaches saturation. Parametric analysis indicates that both relaxation length and temperature difference strongly influence the magnitude of stored energy. Evaluation of the optimization function reveals that a purely mechanical criterion does not yield a finite optimum thickness, with the minimum occurring at the lower thickness boundary. Dimensionless analysis confirms that system behavior is governed by normalized thickness relative to the relaxation length. The study highlights the necessity of incorporating electrical effects to achieve a physically meaningful design criterion for interlayer optimization in dye-sensitized solar cells.
Co-Authors Abdul Mudjib Sulaiman Wahid Nelly Budiharti Rudy Soenoko Sidi Na'ali Sobri Tulus Subagyo Willy Satrio Nugroho