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All Journal Jurnal Reviu Akuntansi dan Keuangan JURNAL ECONOMIA Jurnal Akuntansi & Auditing Indonesia Jurnal Energi Dan Manufaktur International Journal of Renewable Energy Development Jurnal Bisnis dan Manajemen Jurnal Keuangan dan Perbankan Rekayasa Mesin Jurnal Akuntansi Multiparadigma ROTOR: JURNAL ILMIAH TEKNIK MESIN International Conferences SDGs 2030 Challenges and Solutions JCES (Journal of Character Education Society) SENTIA 2016 Conference on Innovation and Application of Science and Technology (CIASTECH) JASa (Jurnal Akuntansi, Audit dan Sistem Informasi Akuntansi) ASEAN Journal of Chemical Engineering The Indonesian Journal of Accounting Research Scientific Journal of Mechanical Engineering Kinematika Indonesian Journal of Electrical Engineering and Computer Science TECHNO-SOCIO EKONOMIKA International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) Journal of Accounting Research, Organization and Economics (JAROE) Eduvest - Journal of Universal Studies Jurnal Akuntansi Manado (JAIM) International Journal of Renewable Energy Development
Nurkholis Hamidi
Departement Of Mechanical Engineering Brawijaya University, Malang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Neuroscience Social Sciences Other

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Premixed combustion of coconut oil in a hele-shaw cell Saroso, Hadi; Wardana, I.N.G.; Soenoko, Rudy; Hamidi, Nurkholis
International Journal of Renewable Energy Development Vol 3, No 3 (2014): October 2014
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.3.3.155-160

Abstract

Coconut oil combustion characteristic is observed experimentally by evaporating oil in the boiler then mix it with air before being burned at various equivalence ratios in the Hele-shaw cell. The result shows that, coconut oil tends to break into glycerol and fatty acid due to hydrolysis reaction producing the flame propagation, where the fatty acid flame propagates first then glycerol flame. Micro-explosion occurs when moisture from fatty acid combustion is absorbed by glycerol and higher heating due to higher flame speed produces more micro-explosion.
Kinerja Thermoelectric pada Kotak Pendingin Berdasarkan Rangkaian Thermoelectric dan Putaran Fan Wind Tunnel Munawir, Munawir; Sasongko, Mega Nur; Hamidi, Nurkholis
Jurnal Rekayasa Mesin Vol 12, No 1 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.01.4

Abstract

A thermoelectric cooler (TEC ) is a component of an electric solid-state cooler that works as a heat pump in the cooling process. Utilizing the peltier effect that is when an electric current is flowed heat absorption occurs on both sides of the thermoelectric and the release of heat on the other side. The use of thermoelectric as a coolant in cool box systems has been widely studied. The purpose of this study was to determine the performance of the cooler using thermoelectric based on the circuit and air velocity in the wind tunnel. The studied performance includes temperature difference, heat absorption, and coefficient of performance. The method used in this study is a real experimental method, with research variables namely series and parallel thermoelectric series and wind tunnel air velocity. Data were taken in the form of cool room temperature cold side temperature, hot side temperature, heatsink temperature, and ambient temperature. Thermoelectric connectivity electrically uses series and parallel circuits and is thermally arranged in series. The results showed that the thermoelectric circuit and wind tunnel air velocity affect the performance of the thermoelectric. Thermoelectric with series circuit produces the highest COP absorption compared to the parallel circuit. The highest performance thermoelectric series is obtained at an airspeed of 9.8 m/s. in these conditions the temperature difference (AT) produced reaches 19oC. the heat absorption (qc) reaches 34.26 watts and the COP reaches 0.89
Efek Bentonit pada Karakteristik Pembakaran Droplet Biodiesel Kelapa Sawit Wijayanto, Vera Dwi; Hamidi, Nurkholis; Wijayanti, Widya
Jurnal Rekayasa Mesin Vol 11, No 3 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.03.4

Abstract

The blends of fuel to base liquid fuels for the enhancement of combustion properties has long generated interest since it is linked to improvement in combustion properties in biodiesel fuels. This work investigates the effect of bentonite nanoparticles on the combustion characteristics of palm oil biodiesel. These nanoparticles are added in various compositions on biodiesel which are 0% (B0), 10% (B10), 20% (B20) and 30% (B30). The insulin pen was used to make Sub-millimeter-sized spherical droplets, and the combustion process of droplets was recorded using a camera in atmosphere condition. The fuel was dripped on the tip of the thermocouple junction and ignited using a torch of the butane-air mixture on a cylindrical burner. Properties such as ignition delay, burning rate, and flame temperature of droplets were measured with post-processing of the resulting images. The results showed a decrease in ignition delay and an increase of flame temperature with the increase of bentonite percentage due to bentonite acts as a catalyst capable of accelerating the reaction rate. However, the burning rate decrease with the increasing of bentonite percentage due to the oxygen content of the mixture is getting lower.
Pengaruh Variasi Temperatur Reaktor terhadap Hasil Produk Pirolisis Eceng Gondok Secara Ex-Situ dengan Katalis Bentonit dan Penambahan Uap Air Hamidi, Nurkholis; Firmansyah, Anggi; Kusumaningsih, Haslinda
Jurnal Rekayasa Mesin Vol 11, No 3 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.03.23

Abstract

The water hyacinth has high growth rates that can lead to various environmental problems and the production of large amounts of waste biomass. However, it can be a source of lignocellulosic biomass for the production of bio-oil.  This study aims to determine the effect of temperature variation on the pyrolysis process of water hyacinth ex-situ with bentonite catalyst and the addition of water vapor. Temperature variations used are 450°C, 550°C, and 650°C. The pyrolysis process uses 300 grams of water hyacinth and is carried out for 1 hour. The results showed that increasing pyrolysis temperature reduced the char and bio-oil products, but increased the product of gas. Pyrolysis at 450°C produces a lot of bio-oil, while at the temperature of 650°C tends to produce gas products. Also, increasing the pyrolisis temperature results in a higher density of bio-oil. Gas chromatograph testing was carried out to determine the content of organic compounds found in bio-oil. Hydrocarbons are obtained which increase with increasing temperature. The highest percentage of the content of organic compounds is in oxygen compounds. Components of alcohol, phenols, ketones, aldehydes are functional compounds found in the content of bio-oil. Acid compounds are also contained in bio-oil from the results of pyrolysis of water hyacinth.
Pengaruh Panjang Rantai Karbon dan Derajat Ketidakjenuhan terhadap Karakteristik Pembakaran Droplet Asam Lemak Tunggal Ibadurrohman, Ibrahim Ahmad; Hamidi, Nurkholis; Yuliati, Lilis
Jurnal Rekayasa Mesin Vol 12, No 2 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.02.11

Abstract

This study aimed to investigate the effect of the different carbon chain lengths and the degree of unsaturation of six fatty acids as the constituent of vegetable oils. The droplet combustion was carried out at an ambient temperature and atmospheric pressure. The variation in the carbon chain length and the degree of unsaturation resulted in different physical and chemical properties of the fuel, which affect the droplet combustion characteristics. The increase of the carbon chain length results in longer ignition delay times and shorter burning durations, as well as higher droplet temperatures, burning rate constant, and specific power output. Conversely, an increase in the degree of unsaturation with the presence of double bond results in shorter ignition delay and longer burning duration, as well as higher droplet temperatures, but lower burning rate constant and specific power output. The droplet diameter evolution divides the combustion period into unsteady burning zones and quasi-linear burning zones. The flame dimension of unsaturated fatty acid is higher due to the soot formation at the top of the flame. A bluish flame related to the higher oxygen content in the molecule can be observed in saturated fatty acids. The short-chain saturated fatty acid has a large non-luminous zone because they are rich in oxygen. In contrast, the long-chain saturated fatty acid has a narrow non-luminous zone with high flame radiation.
Performa pada Motor Bakar 6-Langkah dengan Langkah Power Ekspansi sampai Titik Mati Bawah Sepriyatno, Riswan; Siswanto, Eko; Hamidi, Nurkholis
Jurnal Rekayasa Mesin Vol 12, No 2 (2021)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2021.012.02.18

Abstract

This study aims are to observe the performance of a six-stroke combustion motor and to analyze the thermodynamics of a six-stroke combustion engine with a power expansion step to the bottom dead center. The fuel used in this observation is pertalite with a RON 90 value. The method used is a true experimental method, with independent variables, namely 35%, 40%, 45%, and 50% throttle openings with loading on the prony disc brake of 10 kg, 20kg, 30kg, 40kg, and 50kg. In the torque data, each throttle opening shows the highest number of 7.26 (Nm) with a load of 50kg and the lowest value of 2.01 (Nm) with a load of 10kg, for effective power the highest value is 8.47 (kW) at 50% throttle opening with load is 40kg and the lowest value is 2.49 (kW) at 35% throttle opening with a load of 10kg, while for the specific fuel consumption (SFC) the highest value is 4.28 (kg/Hp.h) at 40% throttle opening with a load of 10kg and the lowest value is 0.77 (kg/Hp.h) at 50% throttle openings with a load of 50kg, and for the thermal efficiency of the six-stroke motor, which means an average increase of 14.58% compared to the thermal efficiency of the conventional 4-stroke internal combustion engine.
FAKTOR-FAKTOR YANG MEMPENGARUHI KESIAPAN PENERAPAN STANDAR AKUNTANSI PEMERINTAHAN BERBASIS AKRUAL PADA PEMERINTAHAN DAERAH Alfonsus Jantong; Nurkholis Nurkholis; Roekhudin Roekhudin
Jurnal Bisnis dan Manajemen Vol 5, No 2 (2018): Jurnal Bisnis dan Manajemen Volume 5 Nomor 2 Tahun 2018
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (425.512 KB) | DOI: 10.26905/jbm.v5i2.2389

Abstract

The objective of this study is to analyze the readiness of local government in applying accrual-based governmental accounting standard. The effect of training, mentoring on human resource and the effect of human resource’s quality, organizational commitment, and infrastructure on the readiness of the application of accrual-based governmental accounting standard are analyzed through positivist approach. The data is collected from 104 respondents through questionnaires distributed to SKPDs (local government agencies) working in accounting and to treasurers. The data is then analyzed using multiple regression method. The results show that training and mentoring positively affect the quality of human resource. The quality of human resource and infrastructure do not affect the readiness of accrual-based governmental accounting standard application. The quality of human resource, organizational commitment, and infrastructure simultaneously affect the readiness of accrual-based governmental accounting standard application. This research proves that local government of Manggarai, in terms of human resource and infrastructure, is not ready. The organizational commitment of Regency of Manggarai is ready to apply accrual-based governmental accounting standard DOI : https://doi.org/10.26905/jbm.v5i2.2389
The effects of financial health and company characteristics on Integrated Reporting Nurkholis Nurkholis
Jurnal Keuangan dan Perbankan Vol 24, No 4 (2020): October 2020
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jkdp.v24i4.4297

Abstract

Integrated Reporting up to now is still prepared voluntarily, so that there are still very few companies that implement it. Using secondary data obtained from published annual financial statements of 20 state owned enterprises (SOE’s) from 2012-2018 (140 pooled observations), this study aims to predict the effect of financial health indicators and company characteristics related to company’s size, age, and type of industry on the extent of Integrated Reporting disclosure of SOE’s listed in the Indonesia Stock Exchange (IDX). Through descriptive and inferential statistic performed, this study provides empirical evidence that indicators of financial health and the size of companies have negative effects on the extent of Integrated Reporting disclosure. Variables of age and type of industry do not affect the extent of Integrated Reporting disclosure. These results indicate that, in line with signaling theory, the lower the level of financial health and the smaller the size of the company, the more likely that the company will try to further increase the extent of disclosure in its Integrated Reporting. JEL Classification: G32, M41 DOI: https://doi.org/10.26905/jkdp.v24i4.4297
PENGUATAN PENGUNGKAPAN CORPORATE SOCIAL RESPONSIBILITY DAN MARKET VALUE ADDED MELALUI MODAL INTELEKTUAL Amanah Hijriah; Bambang Subroto; Nurkholis Nurkholis
Jurnal Akuntansi Multiparadigma Vol 10, No 2 (2019): Jurnal Akuntansi Multiparadigma
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18202/jamal.2019.08.10017

Abstract

Abstrak: Penguatan Pengungkapan Corporate Social Responsibility dan Market  Value Added melalui Modal Intelektual. Riset ini bertujuan untuk menguji dan menganalisis efek dari pengungkapan Corporate Social Responsibility (CSR) terhadap nilai tambah pasar melalui pengelolaan modal intelektual. Metode yang digunakan adalah regresi berjenjang pada seluruh perusahaan terdaftar di BEI 2015-2017. Hasilnya adalah modal intelektual dapat menguatkan CSR dan nilai tambah pasar. Hal ini dikarenakan modal intelektual menjadi aset strategis bagi keberlanjutan dan keunggulan perusahaan. Oleh karena itu, CSR dan modal intelektual diharapkan menjadi informasi yang diungkapkan baik di dalam annual report maupun sustainability report. Abstract: Strengthening CSR and MVA through intellectual Capital. This research aims to examine and analyze the effects of Corporate Social Responsibility (CSR) disclosure on market value added through intellectual capital management. The method used is a tiered regression for all companies listed on the Indonesia Stock Exchange 2015-2017. The result is intellectual capital can strengthen CSR and market added value. This is because intellectual capital is a strategic asset for the company's sustainability and excellence. Therefore, CSR and intellectual capital are expected to be information that is disclosed both in the annual report and the sustainability report.
Institutionalization of Performance Accountability System for Government Institutions in Malang City Government Fransiska Iing Mariandini; Gugus Irianto; Nurkholis Nurkholis
Jurnal Economia Vol 14, No 1: April 2018
Publisher : Faculty of Economics Universitas Negeri Yogyakarta in collaboration with the Institute for

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (883.438 KB) | DOI: 10.21831/economia.v14i1.15418

Abstract

Abstract: Institutionalization of Performance Accountability System for Government Institutions in Malang City Government. This study aimed to understand the institutionalization of Malang City Government’s SAKIP with accordance to Presidential Regulation No. 29/2014. This study found high commitment to support national development plan, and it affected planning, budgeting, and Regional Organizations (OPD) internal evaluation positively. This study also found indications of isomorphism and decoupling. The evidences of isomorphism were as follows; the existence of formal insistence of strict laws and informal insistence of the East Java Provincial Government as the indication of coercive; the adoption of Civil Servant’s Performance Agreement formulation as mimetic view; joint effort for internal capacity building among KEMENPAN-RB, East Java Provincial Government, and PT. Jakarta Traspac as a normative proof. Meanwhile, indications of decoupling were as follows; the OPD’s mindset was not an outcome-oriented mindset, low awareness of the importance of creating performance data management Standard Operating Procedure (SOP), and low utilization of performance information. Keywords: SAKIP, Isomorphism, decouplingAbstrak: Institusionalisasi Sistem Akuntabilitas Kinerja Instansi Pemerintah di Pemerintah Kota Malang. Penelitian ini bertujuan untuk memahami institusionalisasi SAKIP di Pemerintah Kota Malang sesuai dengan Perpres No. 29 tahun 2014. Penelitian ini menggunakan paradigma post positive. Analisis dan interpretasi data dilakukan berdasarkan teori New Institutional Sociology (NIS). Hasil penelitian menunjukkan tingginya komitmen untuk mendukung rencana pembangunan nasional yang berdampak pada pembenahan perencanaan, penganggaran, dan evaluasi internal Organisasi Perangkat Daerah (OPD). Hasil analisis menemukan indikasi isomorphism dan decoupling. Terjadinya isomorphism dibuktikan dengan: desakan formal dari aturan hukum dan desakan informal dari Pemerintah Provinsi (Pemprov) Jatim merupakan gejala coercive; pengadopsian penyusunan perjanjian kinerja Aparatur Sipil Negara sebagai gambaran mimetic; dan kerjasama antara KEMENPAN-RB, Pemprov Jatim, dan PT. Jakarta Traspac untuk peningkatan kemampuan internal organisasi merupakan bukti normative. Indikasi decoupling ditunjukkan oleh mindset OPD yang belum berorientasi outcome, rendahnya kesadaran penyusunan Standard Operating Procedure (SOP) pengelolaan data kinerja, dan rendahnya pemanfaatan informasi kinerja. Kata kunci: SAKIP, Isomorphism, decoupling
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Ghofar Adestya Bismandoko Haryantono Putra Akhlis Rizza, Muhammad Alamsah, Azwar Alfonsus Jantong Amanah Hijriah Ana Pratiwi ANGGI FIRMANSYAH Anindito Purnowidodo Ari Wahjudi Aries Boedi Setiawan Aris Kurniawan Aris Subagiyo Astrada Astrada, Astrada Bambang Subroto Candra Trimandoko, Candra Dadang Hermawan Dedy Nataniel Ully Denny Widhiyanuriyawan Dian Dinanti Djoko Wahyudi Djoko Wahyudi Eko Ganis Sukoharsono Eko Siswanto Endang Mardiati Erwin Saraswati Faiz, Naufal Muhammad Farid Majedi Farid Majedi, Farid Fauzan Baananto Fransisca Gayuh Utami Dewi Fransiska Iing Mariandini Gatot Soebiyakto Gugus Irianto Gunawan Prayitno Habibulfalah, Endi Hadi Saroso Hadi Saroso Handono Sasmito I Nyoman Gede Wardana I.N.G. Wardana I.N.G. Wardana I.N.G. Wardana I.N.G. Wardana I.N.G. Wardana I.N.G.Wardana I.N.G.Wardana Ibadurrohman, Ibrahim Ahmad Ilyas Sofana ING Wardana Kusumaningsih, Haslinda Lilik Purwanti Lilis Yuliati Lilis Yuliati Made Aristia Prayudi Marali, Aryati Muhaymin Maulana , Syahrizal Mega Nur Sasongko Moch. Syamsul Ma'arif Moon, Park Jae Muhamad Bula Muhammad Satya Adhitama Munawir Munawir NadaFajar Nurmani'ah Widiarti Nindya Sari Nur Rachman Supadmana Muda Nurul Emil Safitri Nurul Fachriyah Pragiwaka, Rafif Ezrha Praswanto, Djoko Hari Princilvanno Andreas Naukoko Pudya Heryana Purbo Suwandono Purnami Purnami Purnami Raihan Ilyasa Ray Dewi Redi Bintarto Redi Bintarto, Redi Ribka Apriliani Roekhudin, Roekhudin Rudianto Raharjo Rudy Soenoko Rudy Soenoko Sabila, Adriazka Fasa Saputro, Nurhadi Sari, Martina Puspita Sepriyatno, Riswan Slamet Wahyudi Sofana, Ilyas Sudjito Soeparman Sugiarto Sugiarto Suluh Elman Swara Suroso, Yosephine Diajeng Janur Prasasti, As’ad Munawir, Suryaningrat, Muhammad Sutrisno T Syaiful Iqbal Teguh Dwi Widodo Trismawati Trismawati Widya Wijayanti widya wijayanti Widya Wijayanti Wignyanto Wignyanto Wijayanto, Vera Dwi Wijono Wijono Yenni Mangoting Yuliansyah, Fisal Yusuf Hendrawan Zaki Baridwan