8 research outputs found
METODE LIFE CYCLE ASSESSMENT (LCA) UNTUK KAJIAN DAMPAK LINGKUNGAN PADA INSTALASI PENGOLAHAN AIR BERSIH
No full textWater treatment plants, or WTPs, are crucial to the supply of clean, safe drinking
water that complies with regulations. However, because chemicals and electrical
energy are used in the process, there may be a detrimental environmental impact.
This study examines the environmental impact of WTP using the Life Cycle
Assessment (LCA) method and SimaPro software. The study intends to examine how
the clean water treatment process affects the environment and provide a greener
substitute for WTP. SimaPro 9.0 is used in the LCA technique of environmental
impact assessment. Determining the goals and parameters of the study, gathering
data (Life Cycle Inventory), analyzing the results (Life Cycle Impact Assessment),
and interpreting the data are all included. The reservoir and lamella units are the
main sources of impact in the endpoint impact category, according to the analysis's
findings. The impacts produced by the Impact 2002+ and ReCiPe 2016 approaches
differed, with ReCiPe 2016 demonstrating a stronger impact in certain categories.
This study sheds light on how the WTP's clean water treatment procedure affects
the environment. Reducing the usage of chemicals, increasing energy efficiency,
and introducing environmentally friendly technology are some suggestions for
improvement
Keywords: Water Treatment Plant (WTP), Life Cycle Assessment (LCA), Impact
Method 2002+, ReCiPe 2016, Environmental Improvemen
RANCANG BANGUN MIXER UNTUK ADONAN ROTI
No full textAbstrakMixer adonan roti adalah perangkat mekanik yang digunakan dalam industri roti untuk mencapur bahan-bahan adonan roti, seprti tepung terigu, telur, susu, ragi, gula, mentega dan garam secara merata. Penelitian ini bertujuan untuk merancang dan merakit serta menguji pengaruh kecepatan dan waktu pengadukan terhadap tingkat kalis adonan roti jenis roti manis dalam rancang bangun mesin mixer dengan inovasi timer. Pendekatan eksperimental digunakan untuk merancang mesin mixer dengan kemampuan mengatur kecepatan putaran dan durasi pengadukan dengan beberapa level kecepatan dan durasi pengadukan untuk pengujian adonan roti, dan karakteriktik adonan seperti elastisitas, tekstur, dan kelembutan melalui pengamatan dari hasil pengadukan. Alur penelitian ini dimulai dari studi literatur, perancangan, persiapan, perakitan alat, pengujian, dan analisis hasil pengujian. Hasil analisis menunjukan bahwa kecepatan dan waktu pengadukan berpengaruh terhadap tingkat kalis adonan. Dimana dengan kecepatan 300 rpm menghasilkan adonan kalis dengan waktu 19 menit, kemudian dengan kecepatan 360 rpm membutuhkan waktu 17 menit, selanjutnya dengan kecepatan 450 rpm menghasilkan adonan kalis dengan waktu 15 menit. Dari ketiga variasi kecepatan putar tersebut (300 rpm, 360 rpm, dan 450 rpm) ditemukan kecepatan putar yang efisien untuk menghasilkan adonan kalis yaitu dengan variasi putaran 450 rpm. Penelitian ini diharapkan memberikan wawasan bagi industri roti dalam mengoptimalkan proses pengadukan untuk mencapai adonan yang lebih baik, sehingga menghasilkan produk roti berkualitas dengan konsisten.Kata Kunci: Rancang Bangun, Mixer, Adonan, Rot
Perbandingan Performa Algoritma Random Forest dan Gradient Boosting dalam Mengklasifikasi Churn Telco
No full textCustomer churn adalah kecenderungan pelanggan berhenti dan berpindah layanan dalam periode tertentu. Ini merupakan masalah utama dalam industri telekomunikasi karena mempengaruhi keuntungan perusahaan. Mempertahankan pelanggan lebih mudah dibandingkan mendapatkan pelanggan baru. Memprediksi churn membantu sektor CRM dalam merancang strategi retensi. Tingkat churn yang tinggi dapat menurunkan pendapatan dan mengganggu stabilitas bisnis. Berdasarkan studi, tingkat churn tahunan di industri telekomunikasi berkisar antara 15% hingga 30%. Data mining, yang memanfaatkan teknik pembelajaran mesin, digunakan untuk menganalisis dan mengekstraksi pengetahuan dari data. Penelitian ini bertujuan untuk membandingkan performa dua algoritma yaitu Random Forest dan Gradient Boosting. Hasil yang didapatkan menggunakan splitting data 80:20 menunjukkan bahwa klasifikasi lebih unggul menggunakan metode Gradient Boosting dibandingkan metode Random Forest dilihat dari tingkat akurasi dan nilai ROC AUC. Metode Gradient Boosting mendapatkan nilai akurasi dan ROC AUC sebesar 83% dan 0.89, Sedangkan metode Random Forest mampu menghasilkan nilai akurasi dan ROC AUC sebesar 81% dan 0.87.
Kata kunci: Churn, Gradient Boosting, Klasifikasi, Random Forest, Telco
Multitemporal water quality analysis of a karst spring affected by allogenic recharge
No full textThis research aimed to study the multitemporal water quality of a karst spring affected by allogenic recharge. Allogenic refers to water from adjacent non-karstic regions that replenish karst groundwater through ponors. Research samples were collected for a year at Gremeng Resurgence, the outlet of Gremeng Karst Drainage Basin. The water quality analysis compared the laboratory test outcomes and measurements with existing drinking water quality standards and included hydrogeochemical studies using both trilinear and rectangular Piper plots. The analysis results indicate that rainwater causes dilution; hence, parameter values are relatively low in the rainy season but high in the dry season. Despite this variation, the groundwater at the Gremeng Resurgence meets the quality standards throughout the year. The Piper diagram analysis classifies it as unpolluted, calcium-enriched, average bicarbonate, and bicarbonate groundwater, supporting the finding. © 2023 Author(s)
Radiographic and Histological Evaluation in Canine Femur after Implantation of 304 Stainless-steel-based Plate
No full textFractures are known to be high-risk traumatic cases in domestic animals. Surgery was performed to reposition and immobilize bone using a plate as a biomaterial component. This study aimed to evaluate the radiographic and histological findings in canine femur after implantation of a 304 stainless-steel-based plate. A total of six male dogs aged 3-4 months were used in this study. Dogs were acclimatized for a week and then randomly assigned to 2 groups and 3 replication, respectively. The left femoral diaphysis was cracked and fixed by (A) commercial plate; (B) 304 stainless-steel plate. Radiographic observations were performed at 24 h and 28 d postoperatively during the recovery period. Histological figures were evaluated at 28 d postoperative descriptively. As a result, physical examination of muscle tissue in both groups did not reveal discoloration, swelling, and fluid accumulation around the plate. The radiographic figures presented a slight callus production around the crack and a decrease in the gap between cracks after 28 d. The histological figures observed the proliferation of osteoblasts, osteocytes, connective tissues, and bone trabeculae. It can be concluded that no significant difference between 304 stainless-steel plate compared to commercial plate. A 304 stainless-steel-based plate is recommended for bone immobilization in canine femoral fractures. © 2022 Phcogj.Com
Service Transformation as a Tool for Promoting Sustainable Rural Development in Central Java
No full textThe current developments in Information Technology (IT) should not only be utilized by the public and the private sectors but also by all parties effectively. The government must also be able to take advantage of these advances in many ways, such as in providing government services. The role of IT in managing government has now become an essential part of the society. This study examines the people\u27s expectations in Melikan Village and focuses on using IT advances to create an independent village. The author then draws upon SDG theories to delineate the service transformation process. It is a qualitative study consisting of primary and secondary data. The data collection techniques used in this study include in-depth interviews, FGD, observations, and document analysis. The findings show that IT has become a vital need for the people in Melikan, but the village government fails to meet those expectations. The study suggests that the local government needs technological innovation to develop Melikan Village and add more personnel to help with government services
Kualitas Air Sungai-sungai Alogenik di Kawasan Karst Gunungsewu, Kabupaten Gunungkidul pada Musim Kemarau
No full textSumberdaya airtanah di kawasan karst diimbuh oleh dua sistem utama, yakni sistem alogenik dan sistem autogenik. Imbuhan alogenik adalah imbuhan airtanah di kawasan karst yang berasal dari luar kawasan karst. Imbuhan ini memiliki kerentanan terhadap pencemaran yang tinggi karena merupakan sistem terbuka. Namun demikian, imbuhan alogenik memiliki peranan yang besar dalam menyuplai airtanah di kawasan karst karena kuantitasnya yang besar. Penelitian ini bertujuan untuk menganalisis kualitas air pada sungai-sungai alogenik yang ada di Kawasan Karst Gunungsewu, Kabupaten Gunungkidul. Penelitian dilakukan pada musim kemarau di saat sungai bawah tanah menjadi sangat penting karena merupakan satu-satunya sumber air yang masih dapat dimanfaatkan. Pengambilan sampel dilakukan di lima lokasi yaitu Sistem Sungai Alogenik Sumurup, Kalisuci, Tumbul, Kalimati dan Seropan. Analisis kualitas air dilakukan berdasarkan baku mutu air (PP nomor 82 tahun 2001 dan berdasarkan pada standar kualitas air yang disusun oleh Todd dan Mays pada Tahum 2005). Penilaian tingkat pencemaran pada penelitian ini didasarkan pada Metode Storet. Kualitas air pada musim kemarau sungai-sungai alogenik di Kawasan Karst Gunungsewu, Kabupaten Gunungkidul terdiri dari kelas I sampai dengan IV. Klasifikasi tingkat pencemaran di lokasi kajian adalah cemar sedang sampai dengan cemar berat
HUMAN RESOURCES MANAGEMENT FACETS: ROLE OF ORGANIZATIONAL COMMITMENT
No full textThe prime objective of the current study is to explore the nexus between job involvement, turnover, and organizational
commitment. Meanwhile, the study has examined the mediating role of organizational commitment in the relationship between job involvement and turnover. The study broached an argument that in the era of globalization, it has been regarded to be a key issue to deal with employee turnover for any business organization. To date, agreement on how to practice this concept has not yet been resolved.
Employing the survey-based methodology, the SEM-PLS technique is used to test the hypothesized relationships. So, the current study
has used SEM-PLS as a statistical tool to answer the research questions raised in this study and research objectives envisaged in the
current study. The data is collected from the managers of the manufacturing firms in Indonesia. The findings of the study have provided
support to the theoretical foundation and the proposed hypothesis of the current study. The current study will be helpful for policymakers
and practitioners in understanding the issues related to job involvement, turnover, and organizational commitment. In author knowledge,
this is among very few pioneering studies on this issu
