Articles

Analisa Parameter Hidrodinamika Remotely Operated Vehicle (ROV) Kelas Obervasi Satria, Dhimas; Wiryadinata, Romi; Caturwati, Ni Ketut; Haryadi, Haryadi; Rosyadi, Imron
ROTASI Vol 20, No 4 (2018): VOLUME 20, NOMOR 4, OKTOBER 2018
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (439.589 KB) | DOI: 10.14710/rotasi.20.4.221-225

Abstract

Remotely Operated Vehicle (ROV) teknologi observasi bawah laut di perairan selat Sunda yang telah dikembangkan memiliki keterbatasan dari segi manuver, yaitu hanya dapat bergerak vertical dengan kedalaman yang terbatas. Penelitian ini bertujuan untuk mendapatkan parameter hidrodinamika yang terbaik, yaitu matriks inersia, matrik coriolis, dan redaman hidrodinamika. Metode penelitian yang digunakan adalah metode fixed mesh, dimana diasumsikan fluida bergerak pada kecepatan dimana ROV bergerak dan model ROV diam (statik). Representasi gerak ROV dengan mengubah kemiringan ROV terhadap arah aliran fluida. Hasil dari penelitian adalah parameter hidrodinamika, yaitu  (matriks inersia benda tega ROV),  (Matriks koefisien untuk benda tega Coriolis),  (inersia hidrodinamika),  (matriks koefisien untuk hidrodinamika dengan Coriolis dan nilai sentripetal) memberikan koefisien inersia badan ROV kerangka rotasi terhadap titik pusat bumi. Sedangkan parameter hidrodinamika yaitu redaman hidrodiniamika menggambarkan gaya redaman hidrodinamika dan momen berkerja terhadap gerak relatif antara badan kendaraan dengan fluida
Hubungan Penurunan Fungsi Gerak Lansia terhadap Strategi Koping Stres Lansiadi Panti Jompo Welas Asih Kec. Singaparna Kab. Tasikmalaya Permana, Fanji Helvi; Sumarwati, Made; Rosyadi, Imron
Jurnal Keperawatan Soedirman (JKS) Vol 4, No 3 (2009)
Publisher : Jurusan Keperawatan FKIK Unsoed

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Abstract

Activity function decline become one of the stress causes for elderly that can disturb Activity Daily Living (ADL). The Stress condition makes elderly to  adapted that alteration by using coping strategy, they are Problem Focused Coping (PFC) and Emotional Focused Coping (EFC). The aim of this research is to know the correlation between activity function decline to stress coping strategy in elderly.This research used analytic correlation with cross sectional approach design. Purposive sampling technique was applied to determine sample. Chi-Square statistical analysis was used to analyze the data. The samples who had a part decline were 25 people (83,3%) and the samples who had a total decline were 5 people (16,7%). The quantity samples who used PFC coping strategy was 24 people (80%) and EFC was 6 people (20%).  Based on the Chi square analysis, p value was 0,298. Because p value was more than α (5%) or 0,05, it meant that there were not correlation significantly between  activity function decline to stress coping strategy.There was no correlation between activity function declines to stress coping strategy of elderly in nursing home “Welas Asih”, Singaparna, Tasikmalaya.  
KOMUNIKASI DALAM MENERTIBKAN ANGKUTAN UMUM PENUMPANG ILLEGAL TAHUN 2011-2013 DI KABUPATEN KUANTAN SINGINGI Rosyadi, Imron; ", Ishak
Jurnal Online Mahasiswa (JOM) Bidang Ilmu Sosial dan Ilmu Politik Vol 1, No 1 (2014): WISUDA FEBRUARI 2014
Publisher : Fakultas Ilmu Sosial dan Ilmu Politik Universitas Riau

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Abstract

Supervision of the Department of Transportation and CommunicationInformation in Public Transport Passenger curb Illegal Year 2011-2013 inKuantan Singingi District.Informants in this study were Apparatus Information and CommunicationDepartment of Transportation, Traffic Police Unit officers Regency KuantanResort Singingi, and the owner of freight or passenger public transport driversillegal, based on the type of four-wheeled vehicles that rode in Kuantan SingingiDistrict, which is determined by purposive according to research needs.This study aims to determine the cause of the Transport Department ofInformation and Communications is not able to regulate the public transport ofpassengers Illegal Year 2011-2013 in Kuantan Singingi District. In this study,researchers used qualitative methods to analyze the data is descriptive analysis.Data collection techniques in this study is the observation and interview, whiledata analysis technique that is use qualitative analysis, by analyzing theexpression or records available or observed behavior. Qualitative analysis wasperformed on the data, in this case the qualitative data in the form of information,a description in the form of prose language, then linked with other data to obtainclarity on the truth.Conclusions from the study regarding the supervision of Department ofTransportation and Communications in Information Public transport passengercurb Illegal Year 2011-2013 In Singingi Regency Kuantan is still less than themaximum , because they have not been able to curb illegal entire public transportpassengers in Kuantan Singingi District are caused by several factors in amongthese are the lack of rigor officer at the time of supervision and lack of firmnesssanctions applied so as not to make the driver feel afraid or transit abundant inaction, as well as lack of awareness of the driver and the passenger transportillegal.Keywords: Monitoring, Control and Demolition.
TINGKAT KETAHANAN PANGAN RUMAH TANGGA DI DESA TERTINGGAL Rosyadi, Imron; Purnomo, Didit
Jurnal Ekonomi Pembangunan: Kajian Masalah Ekonomi dan Pembangunan Vol 13, No 2 (2012): JEP Desember 2012
Publisher : Universitas Muhammdaiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1307.416 KB) | DOI: 10.23917/jep.v13i2.176

Abstract

The purpose of this study was to determine the level of production, availability of food for the community and analyze the level of accessibility of food for households in villages in the district behind Weru Sukoharjo. The method of analysis used in qualitative research is descriptive analytic in order to approach the situation, structure, behavior and performance (SSPP). Use of this approach is based on the consideration of allegations that sensitive (vulnerable) of food a lot happening in the villages left behind. The results of this study indicate that the performance of food production especially rice or rice has increased significantly from year to year, but increased production has not been able to offset the growth in consumption of rice that grows higher than the growth in rice production. This shows that in terms of food availability, food security in the area of research is still very low.
DIALEKTIKA HUKUM ISLAM DAN PERUBAHAN SOSIAL DI INDONESIA: TELAAH FATWA-FATWA TARJIH MUHAMMADIYAH Rosyadi, Imron
Tajdida Vol 12, No 2 (2014): Desember
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

To avoid divisions Muhammadiyah members in practicing the teachings of Islam, Muhammadiyah established the Legal Affairs Committee (Tarjih). This assembly is tasked to examine issues related to fiqh and other religious issues. This paper examines about fatwas of Tarjih Muhammadiyah in responding to social change in Indonesia, concluded on dialectics Fatwa Tarjih with social change in Indonesia with all its dynamics in the following description. With reference to the dialectic model of Islamic law and social change, then the Fatwa Tarjih there are three models of dialectics (response), namely tahmil, taghyir, and Tahrim.
TINGKAT KETAHANAN PANGAN RUMAH TANGGA DI DESA TERTINGGAL Rosyadi, Imron; Purnomo, Didit
Jurnal Ekonomi Pembangunan: Kajian Masalah Ekonomi dan Pembangunan Vol 13, No 2 (2012): JEP Desember 2012
Publisher : Universitas Muhammdaiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1307.416 KB)

Abstract

The purpose of this study was to determine the level of production, availability of food for the community and analyze the level of accessibility of food for households in villages in the district behind Weru Sukoharjo. The method of analysis used in qualitative research is descriptive analytic in order to approach the situation, structure, behavior and performance (SSPP). Use of this approach is based on the consideration of allegations that sensitive (vulnerable) of food a lot happening in the villages left behind. The results of this study indicate that the performance of food production especially rice or rice has increased significantly from year to year, but increased production has not been able to offset the growth in consumption of rice that grows higher than the growth in rice production. This shows that in terms of food availability, food security in the area of research is still very low.
Profitability and Efficiency of Red Onion Farming Rosyadi, Imron; Purnomo, Didit
Jurnal Ekonomi Pembangunan: Kajian Masalah Ekonomi dan Pembangunan Vol 15, No 2 (2014): JEP Desember 2014
Publisher : Universitas Muhammdaiyah Surakarta

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Abstract

The purpose of this research is to determine and analyze the profitability and performance of onion farming marketing margins; analyze and know the parts of prices received by farmers and analyze the efficiency of onion farming in the district of Brebes. Samples taken in this study is 30 onion farmers in the district of Brebes, who settled in six villages, each village was taken 5 farmers as the research sample. These results indicate that the location of onion farming research does not provide benefits significantly to the household economy of farmers. Higher selling prices at the retail level and supermarkets do not have a significant impact on the level of profits of farming in the study area. Farming is done by farmers in the study area is inefficient. Onion marketing chain in the study area is relatively long, which consists of 4 lines of marketing.
PROFITABILITAS DAN EFISIENSI USAHATANI BAWANG MERAH Rosyadi, Imron; Soebagyo, Daryono; Suyatmin, -
PROSIDING SEMINAR NASIONAL 2015: Prosiding Bidang Sosial Ekonomi dan Psikologi The 2nd University Research Colloquium
Publisher : Universitas Muhammadiyah Semarang

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Abstract

The purpose of this research is to determine and analyze the profitability and performance of onionfarming marketing margins; analyze and know the parts of prices received by farmers (farmersshare) and analyze the efficiency of onion farming in the district of Brebes. Samples taken in thisstudy is 30 onion farmers in the district of Brebes, who settled in six (6) Village, each village wastaken 5 farmers as the research sample. These results indicate that the location of onion farmingresearch does not provide benefits Significant (unprofitable) to the household economy of farmers.The high selling prices at the retail level and supermarkets do not have a significant impact on thelevel of profits of farming in the study area. Farming is done by farmers in the study area isinefficient. Onion marketing chain in the study area is relatively long, which consists of 4 lines ofmarketing: (i) farmers, traders, retailers in Brebes, end consumers in Brebes; (ii) farmers,wholesalers, traders in the central market Kramat Jati, market retailers outside of Jakarta, thefinal consumer in and outside Jakarta; (iii) farmers, traders in the central market Kramat Jati,market retailers outside of Jakarta, the final consumer in and outside Jakarta; and (iv) farmers,wholesalers, traders between islands outside Java vendors, and end users outside Java.Keywords: farming onion, profitability, efficient, output-input
DETERMINASI KEPATUHAN MENUNAIKAN ZAKAT MAAL Achyani, Fatchan; Rosyadi, Imron
PROSIDING SEMINAR NASIONAL 2015: Prosiding Bidang Sosial Ekonomi dan Psikologi The 2nd University Research Colloquium
Publisher : Universitas Muhammadiyah Semarang

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Abstract

The objective of this research is to (i) identify some variables affecting compliance muzakki to throw zakat, infaq and shadaqoh ( ZIS ) and (ii) analyze optimization ZIS in strengthening community economic marginal in the research area. The analysis in this study was conducted witha descriptive-analytic approach, that describe and define the role and involvement or strategic community organizations Muhammadiyah in managing institutions amil ZIS on the very bottom of the organizational structure. The subject of this research is the PRM, the Muhammadiyah and the general public in Sukoharjo Regency. The Data that is required to achieve the objectives of this research is the primary data and secondary data obtained with the method of observation, in-depth interviews, and a search of official documents Muhammadiyah associated with the management of the institutions of the amil ZIS. Results of the first year of research further developed to produce ZIS-based management model of development branch of Muhammadiyah. data analysis with the method of focus group discussions (FGD), critical-analytical and interactive-analytic Based on the testing of regression, found that society accepter zis ( mustahik ) have not received optimal benefit because the capital exerted by institutions of amil and zakat ( laz ) has not been able to raiserevenue mustahik.While the result of the regression logistics in testing discovered that compliance or non-compliance Zakah is affected by variable commitment to the teaching of islam, orientation living infinite-dimensional akhirat, transcendental, pruden against a risk and the perception onjustice zakat.Keyword: zakah compliance; ZIS optimalization; development model  
PENGOPTIMALAN OPERASI PEMBANGKIT LISTRIK TENAGA HIBRIDA SURYA - ANGIN UNTUK MENGURANGI EXCESS ELECTRICITY MENGGUNAKAN MIX INTEGER LINEAR PROGRAMMING Winasis, Winasis; Rosyadi, Imron; Sarjiya, Sarjiya
TRANSMISI Vol 17, No 4 Oktober (2015): TRANSMISI
Publisher : Jurusan Teknik Elektro Fakultas Teknik – Universitas Diponegoro

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Abstract

Salah satu upaya yang dilakukan dalam pemenuhan kebutuhan energi listrik  adalah dengan memanfaatkan sumber energi baru dan terbarukan (EBT) seperti : energi matahari dan energi angin sebagai Pembangkit Listrik Tenaga Hibrida (PLTH). Penelitian ini bertujuan menganalisis pengoptimalan pengoperasian sistem PLTH Surya Angin dengan studi  kasus pada PLTH Pantai Baru Bantul menggunakan metode Mix Integer Linear Programming. pengoptimalan bertujuan untuk meminimalkan excess electricity dan memaksimalkan pemanfaatan potensi energi terbarukan dengan memperhatikan batasan-batasan yang terkait dengan kapasitas modul sel surya, kapasitas turbin angin, kapasitas inverter, dan kendala baterai. Permasalahan optimisasi dan batasan operasi diformulasikan sebagai model Mix Integer Linear Programming (MILP) dan diselesaikan menggunakan software optimisasi Tomlab CPLEX. Simulasi model optimisasi menggunakan data pembangkit listrik hibrida surya angin Pantai Baru dilakukan dengan skenario penambahan beban non-critical (dummy) pada sistem pembangkit hibrida. Berdasarkan hasil simulasi didapatkan nilai excess electricity dapat dikurangi dan pemanfaatan energi pada beban dapat dimaksimalkan.   Kata kunci: excess electricity, MILP, pembangkit listrik tenaga hibrida, pengoptimalan