bluuebunny/crossref_metadata_2025 huggingface dataset:
Laporan Kasus: Teratoma Menyerupai Lipomielokel
Authors: Niryana I Wayan , Ariyanta Kadek Deddy
Published: August 2022

Latar Belakang: Teratoma sakrokoksigeal (SCTs) adalah neoplasma kongenital yang muncul dari tulang ekor dan terdiri dari jaringan yang berasal dari ketiga lapisan germinal. Diagnosis tidak sulit dalam banyak kasus; namun, harus ada informasi tambahan berupa studi pencitraan untuk mengelola pasien dengan benar. Kasus: Perempuan usia 12 tahun datang dengan keluhan benjolan di bagian atas pantat. Pasien kemudian secara klinis didiagnosis dengan teratoma sakrokoksigeal dengan diagnosis banding lipomielokel. Pasien dilakukan reseksi tumor dan pengangkatan tulang ekor dengan operasi gabungan antara ahli bedah anak dan ahli bedah saraf. Hasil histopatologi menunjukkan gambaran morfologi yang sesuai dengan teratoma sakrokoksigeal. Diagnosis akhir pada pasien ini adalah teratoma sakrokoksigeal Altman 1. Simpulan: Teratoma sakrokoksigeal harus ditangani sedini mungkin untuk menghindari risiko keganasan.
Rancang Bangun Alat Uji Jominy Dengan Standar ASTM A255
Authors: Nurrohman Ari , Mulyanto Tri
Published: August 2022

Tidak semua material mampu dikeraskan, untuk mengetahuinya perlu dilakukan uji hardenability. Salah satu metode pengujian hardenability yaitu jominy test. Uji jominy merupakan sebuah metode untuk mengetahui kemampuan pengerasan logam. Caranya yaitu benda uji dipanaskan pada suhu yang ditentukan, kemudian didinginkan dengan menyemprotkan air pada salah satu ujungnya (bagian bawah). Setelah pengujian dengan alat uji jominy, diukur kekerasannya dengan menggunakan alat uji kekerasan. Mengingat pentingnya proses hardenability dalam industry dan pendidikan maka  penelitian ini bertujuan untuk membuat alat uji jominy untuk keperluan praktikum di jurusan teknik mesin yang sesuai dengan standar ASTM A255. Dalam pembuatannya material yang digunakan untuk alat uji jominy adalah stailess steel 304 dengan dimensi total 660 mm x 660 mm x 800 mm.

Not all materials can be hardened, to find out it needs to be tested hardenability. One method of hardenability testing is jominy test. Jominy test is a method to determine the ability of metal hardening. The trick is that the test object is heated to a specified temperature, then cooled by spraying water at one end (the bottom). After testing with jominy test equipment, the hardness is measured using a hardness test tool. Considering the importance of the process of hardenability in industry and education, this study aims to make jominy test equipment for practicum purposes in the mechanical engineering department in accordance with ASTM A255 standards. In making the material used for the Jominy test equipment is 304 stainless steel with a total dimension of 660 mm x 660 mm x 800 mm.
Analisis Gigi Perontok Pada Mesin Power Thresher dengan Metode DFMA
Authors: Nurohmah Syifa , Teguh Santoso Deri
Published: August 2022

Perkembangan teknologi yang ada di Indonesia saat ini berjalan dengan cepat dan semakin canggih, sehingga dapat dirasakan dalam berbagai kegiatan dan kehidupan sehari-hari, khususnya dalam bidang industri sektor pertanian. Mesin Power Thresher merupakan alat untuk merontokkan padi menjadi gabah, sebagai alat bantu bagi petani unuk memisahkan gabah dengan jeraminya. Perakitan produk power thresher memerlukan waktu yang lama, dengan perakitan manual. Salah satu metode yang dapat digunakan untuk proses evaluasi suatu rancangan yaitu metode Design for Manufacturing and Assembly (DFMA). Tujuan dari DFMA yaitu untuk menentukan desain produk yang benar-benar dapat menghilangkan komponen-komponen yang sebenarnya tidak diperlukan dan mengurangi dalam proses pembuatan. Dengan menggunakan metode DFMA pada perancangan gigi perontok mesin power thresher didapat selisih waktu perakitan antara silinder gigi perontok thresher PT Raja Ampat dan hasil DFMA adalah 622,6 detik/unit atau 10,38 menit/unit. Dan efisiensi waktu sebesar 21,1 %. Assembly efficiency index desain hasil DFMA pada gigi perontok sebesar 0,99. Estimasi yang dilakukan pada biaya produksi thresher PT Raja Ampat dengan thresher hasil DFMA mengalami pengurangan biaya sebesar Rp. 38.026,-/unit.

The development of technology in Indonesia is currently running fast and increasingly sophisticated, so that it can be felt in various activities and daily life, especially in the agricultural sector industry. The Power Thresher machine is a tool for threshing rice into unhulled rice, as a tool for farmers to separate unhulled rice from straw. Power thresher product assembly takes a long time, with manual assembly. The method that can be used for the evaluation process of a design is the Design for Manufacturing and Assembly (DFMA) method. The goal of DFMA is to determine product designs that can completely eliminate unnecessary components and reduce unnecessary components in the manufacturing process. By using the DFMA method in the design of the power thresher engine thresher teeth, the difference in assembly time between the PT Raja Ampat thresher removal gear cylinder and the DFMA result is 622.6 seconds/unit or 10.38 minutes /unit. And the time efficiency is 21.1%. The assembly efficiency index of the DFMA design result in the removal gear is 0.99. Estimates made on the production costs of PT Raja Ampat thresher with the DFMA thresher resulted in a cost reduction of Rp. 38.026/unit.
Perencanaan Ulang Poros Propeller Shaft pada Mobil Toyota Avanza Tipe E 1300 CC
Authors: Akbar Roby Muhammad , Nugraha Iwan , Suhendra Bobie
Published: August 2022

Poros propeller (profeller shaft) biasa juga ddisebut dengan poros kopel merupakan bagian penting pada kendaraan yang berfungsi sebagai pemindah tenaga. Terdapat pada 2 tipe kendaraan yaitu FR dan 4WD, Poros propeller bekerja untuk meneruskan daya putaran dari transmisi ke diferensial dalam keadaan tidak saling bersambungan. lalu putaran diteruskan dari transmisi ke poros propeller dan dari poros propeller ke diferensial melalui universal joint, universal joint berfungsi untuk meneruskan daya putaran yang dalam keadaan tidak satu garis. Tujuan dari penelitian ini adalah untuk mengetahui tegangan yang terjadi pada poros, umur nominal pada bearing, dan umur dari bearing itu sendiri. Material yang digunakan poros adalah baja ST 37 dengan kekuatan tarik sebesar ?b = 37 kg/ . Hasil dari perhitungan manual didapatkan tegangan sebesar  7,090 Kg/ lebih kecil dari tegangan geser yang sebenernya sebesar 17,5  Kg/ . Umur nominal pada bearing didapatkan 181 juta putaran. Umur bearing didapatkan dari perhitungan manual 942,7 jam.

The propeller shaft, also known as the coupling shaft, is an important part of the vehicle that functions as a power transfer. There are 2 types of vehicles, namely FR and 4WD, the propeller shaft works to transmit rotational power from the transmission to the differential in a discontinuous state. then the rotation is passed from the transmission to the propeller shaft and from the propeller shaft to the differential through the universal joint, the universal joint serves to continue the rotational power that is not in one line. The purpose of this study was to determine the stress that occurs on the shaft, the nominal life of the bearing, and the life of the bearing itself. The material used for the shaft is ST 37 steel with a tensile strength of b = 37 kg/(mm)^2. The result of manual calculation shows that the stress is 7.090 Kg/(mm)^2 which is smaller than the actual shear stress of 17.5 Kg/(mm)^2. The nominal life of the bearing is 181 million revolutions. Bearing life is obtained from manual calculation of 942.7 hours.
Pengujian Lapangan Bilah Airfoil Naca 5415 Dengan Turbin Angin The Sky Dancer 500 Watt
Authors: Ramdhani Rizky , Oleh Oleh , Aripin Aripin
Published: August 2022

Energi merupakan sektor primer untuk kebutuhan hidup manusia, namun ironi negeri ini sektor energi masih dipasok oleh waste energy, dimana negeri-negeri tetangga sudah mulai memanfaatkan green energy. Indonesia dilimpahkan sumber daya energi baru-terbarukan sangat berlimpah, mulai dari panas matahari, panas bumi, angin, air, gelombang laut. Namun, kita belum mampu untuk memaksimalkan potensi yang diberikan. Contohnya, kecepatan  rata-rata angin di Indonesia berkisar 2 m/s sampai dengan 11 m/s. Masuk dalam kecepatan angin rendah. Hampir mustahil memanfaatkan energi angin ini untuk skala besar. Akan tetapi, potensi angin ini tersedia hampir sepanjang tahun, maka dari itu, pengembangan teknologi turbin angin ini memungkinkan untuk skala mikro. Terdapat berbagai opsi untuk memaksimalkan energi angin dalam kecepatan rendah. Ada banyak opsi untuk menggunakan airfoil, parameter yang dicari adalah nilai Cl/Cd yang tinggi untuk mengekstrak energi angin pada kecepatan 2 m/s sampai 11 m/s. Pada penelitian ini dilakukan 3 tahapan, tahapan pertama perhitungan untuk menentukan jari-jari, chord, dan twist pada bilah. Tahapan kedua menggunakan bantuan software Q-blade untuk mengetahui Coefficient Performance dari airfoil yang digunakan dan 3D CAD Modelling. Tahapan ketiga yaitu proses manufaktur dan pengujian lapangan. Berdasarkan hasil perancangan, bilah yang dipilih adalah airfoil NACA tipe 5415  jenis taperless dengan jari-jari 0.875 m.

Energy is the primary sector for the needs of human life, but the irony of this country is that the energy sector is still supplied by waste energy, where neighboring countries have started to use green energy. Indonesia is bestowed with abundant new-renewable energy resources, ranging from solar heat, geothermal, wind, water, ocean waves. However, we have not been able to maximize the potential given. For example, the average wind speed in Indonesia ranges from 2 m/s to 11 m/s. Enter in low wind speed. It is almost impossible to harness this wind energy on a large scale. However, this wind potential is available almost all year round, therefore, the development of this wind turbine technology allows for micro-scale. There are various options for maximizing wind energy at low speeds. There are many options for using airfoils, the parameter to look for is a high Cl/Cd value to extract wind energy at speeds of 2 m/s to 11 m/s. In this study, 3 stages were carried out, the first stage was the calculation to determine the radius, chord, and twist on the blade. The second stage uses the help of Q-blade software to find out the Coefficient Performance of the airfoil used and 3D CAD Modeling. The third stage is the manufacturing process and field testing.
Perancangan Peralatan Vakum Penggenggam Pelat Baja pada Trulaser 3030 dengan Motor Servo
Authors: Kepra Wijaya Ambrosius Vitoaji , Dyanasari Melya , Atmadi Priyono
Published: August 2022

Vakum penggenggam adalah suatu alat yang menggunakan vacuum cup sebagai alat penghisap dan penahan beban benda kerja sehingga benda kerja dapat melalui proses pemindahan dari pososi satu ke posisi lainnya. Pada penelitian ini, vakum penggenggam menjadi alat utama dalam mesin pemindah material pelat baja sehingga material dapat dengan mudah dipindahkan dari palet kayu ke meja mesin TruLaser 3030 Fiber. Proses pembuatan desain mesin ini membutuhkan penghitungan rumus yang teliti sehingga didapatkan komponen mesin yang sesuai untuk mengangkat bebanmaterial. Komponen yang dibutuhkan pada desain mesin ini antara lain vakum penggenggam, motor servo, poros penahan beban dan penggerak transmisi, transmisi roda gigi, dan rangka baja menggunakan Wide Flange Beam 300 x 300 sebagai penopang mesin keseluruhan. Material pelat baja yang digunakan sebagai beban adalah pelat baja material SS400 dengan ketebalan 15 mm dan dimensi luasan 2.44 m x 1.22 m. untuk itu diperlukan komponen yang kuat dan mampu untuk menahan beban vertikal dan horisontal dari pergerakan material dan beban material pelat baja itu sendiri. Disarankan menggunakan motor hisap pada vakum penggenggam dengan daya hisap 48 m3/jam dan daya listrik 1.3 kW. Selain itu motor servo yang digunakan harus dapat menahan beban sebesar 350 kg dengan daya rencana 171.7 watt dan torsi 93 Nm, dan roda gigi lurus dengan rasio 4 : 3.

Vacuum gripper is a device that uses a vacuum cup as a suction device and holds the workpiece load so that the workpiece can go through the process of moving from one position to another. In this research, the gripping vacuum is the main tool in the sheet metal material transfer machine so that the material can be easily moved from the wooden pallet to the TruLaser 3030 Fiber machine table. The process of making this machine design requires careful calculation of the formula so that the appropriate machine components are obtained to lift material loads. The components needed in the design of this machine include a gripper vacuum, servo motor, load-bearing shaft and transmission drive, gear transmission, and a steel frame using a 300 x 300 Wide Flange Beam as a support for the whole machine. The sheet metal material used as the load is SS400 material sheet metal with a thickness of 15 mm and an area dimension of 2.44 m x 1.22 m. For this reason, strong components are needed and are able to withstand vertical and horizontal loads from the movement of materials and the load of the sheet metal material itself. It is recommended to use a suction motor on a gripping vacuum with a suction power of 48 m3/hour and an electric power of 1.3 kW. In addition, the servo motor used must be able to withstand a load of 350 kg with a design power of 171.7 watts and a torque of 93 Nm, and straight gears with ratio of 4: 3.
Rancang Bangun Mesin Tepung Terubuk Berpenggerak Motor DC 60 Watt Dengan Menggunakan Energi Surya
Authors: Rizki Muhammad Nur , Dewi Anjani Ratna , Teguh Santoso Deri
Published: August 2022

Indonesia sebagai negara tropis mempunyai potensi energi surya yang tinggi dengan radiasi harian rata-rata (insolasi) sebesar 4,5 kWh/m2/hari. Potensi ini dapat dimanfaatkan sebagai sumber energi alternatif tersedia sepanjang tahun. Energi surya banyak di terapkan di berbagai kegiatan industri dan kegiatan di masyarakat, dalam pennelitian ini kami mencoba mendesain mesin tepung terubuk yang di jalankan oleh energi surya ( solar cell ). Sehingga energi surya ( solar cell ) yang termasuk energi terbarukan akan terbiasa digunakan oleh masyarakat di daerah pedesaan maupun industri. Dalam proses pembuatan mesin penggiling terubuk untuk menghasilkan tepung maka dirancang suatu alat yang dapat menghancurkan terubuk menjadi berbentuk tepung yang halus, dan membuat bentuk dari mesin penggiling yang portabel. Metode yang digunakan adalah metode perancangan dan observasi. Hasil penelitian diperoleh desain mesin penggiling tepung terubuk dengan energi surya dengan spesifikasi rangka dengan panjang  552 mm, lebar 135 mm, tinggi 225 mm, dengan daya yang dibutuhkan untuk menggerakkan electromotor DC 3000 rpm pada mesin penepung ini adalah sebesar 60 watt dan sumber daya yang dihasilkan berasal dari aki 12V 20 AH. daya modul solar cell yang dibutuhkan untuk menggerakan mesin penepung ini yaitu sebesar 100 wp.

Indonesia as a tropical country has a high potential for solar energy with an average daily radiation (insolation) of 4.5 kWh/m2/day. This potential can be utilized as an alternative energy source available throughout the year. Solar energy is widely applied in various industrial activities and activities in the community, in this study we tried to design the ultimate flour machine that is run by solar energy (solar cell). So that solar energy (solar cell) which includes renewable energy will be used by people in rural and industrial areas. In the process of making the ultimate grinding machine to produce flour, a tool is designed that can crush the terubuk into a fine powder, and make the shape of a portable grinding machine. The method used is the observation design method. The results showed that the design of the terubuk flour milling machine with solar energy with a frame specification of 552 mm long, 135 mm wide, 225 mm high, with the power required to drive a 3000 rpm DC electromotor on this flour machine is 60 watts and the resulting power source comes from a 12V 20 AH battery. The power of the solar cell module needed to drive this flour machine is 100 wp.
Kinerja Turbin Vortex dengan Sudu Semi Twisted Curve
Authors: Mariawan I Nyoman , Sucipta Made , Suarda Made
Published: August 2022

Turbin vortex adalah turbin yang beroperasi dengan memanfaatkan aliran vortex sebagai penggerak sudu-sudu turbin yang kemudian poros turbin dihubungkan ke generator untuk mengkonversi energi mekanis poros kedalam bentuk energi listrik. Salah satu parameter yang berpengaruh terhadap kinerja turbin vortex adalah bentuk sudu. Banyak penelitian tentang sudu turbin vortex  yang telah dilakukan, seperti berbentuk profil 3D curve helix dan curved. Pada penelitian ini dilakukan pengujian secara eksperimental sistem turbin vortex menggunakan sudu semi twisted curve dengan sudut sudu 40°, 60° dan 80° diuji pada posisi runner turbin 0 cm atau sejajar dengan dasar saluran air menuju basin. Debit aliran air yang digunakan adalah 0,006 m3/dt. Hasil penelitian menunjukan daya dan efisiensi tertinggi dihasilkan turbin dengan sudu 60° yaitu 7,21 watt dan 28,47 % pada putaran 80 rpm.
ANALISIS KINERJA DAN KEBUTUHAN FASILITAS PELABUHAN PENYEBERANGAN PADANGBAI
Authors: Parahita Nanda Angga , Suthanaya Putu Alit , Wedagama Dewa Made Priyantha
Published: August 2022

In 2019 there are indication of decresed performance of Padangbai Port which can be seen from the long vehicles queues. Decline in performance is due to the high volume of vehicles unsuitable availability of facilities and infrastructure. This condition is exacerbated by the use of Padangbai Port to also serve the crossing to Nusa Penida. Damage to the pier or bad weather can also be the cause of reduced port performance. As an evaluation of the problems in 2019 and the impact of the Covid-19 pandemic in 2020, an analysis of operational performance evaluation is needed. To get ideal operational performance in the future, an analysis of the needs of ships, docks and ideal facility space is needed. The analysis is based on the prediction of the volume of passengers and vehicles by taking calculation from effect of the opening of the Banyuwangi - Lembar crossing route, which operates from 2021.

In this study, the analysis of operational performance ata Port Padangbai in serving route Padangbai – Lembar was based on the Regulation of DJPL No. HK/103/2/2DJPL-17. The prediction of passenger and vehicle volume is carried out using 4 methods whics is growth factors based on GRDP, based on population growth, based on vehicle growth and regression analysis. From the 4 prediction methods, a representative prediction result will be selected. The calculation of ideal number of ship is based on the load factor and the calculation of the ideal dock is based on the ideal BOR value. The method of calculating the ideal facility space based on KepMen Perhubungan No. KM 52 Tahun 2004.

The result show that the performance level of Port padangbai in 2020 is waiting time 13 minutes, approach time 19 minutes, ET/BT 63,42%, BOR in 2020 49% and BOR in 2019 85,74%. Prediction result of passanger and vehicle volume did not show a significant increase in the future. Result of the calculation ideal number of vessels are in 2019 26 units, 2020 19 units, 2025, 22 units, 2030 26 units, and 2040 30 units vessel. The ideal number of dock based on the calculation result show in 2019 ideally there are 3 docks, from 2020 to 2030, ideally there are 2 docks and in 2040 ideally there are 3 docks. The ideal facilty space calculation obtained the land side existing facility space is still adequate for 2019, but the availability of parking areas for crossing vehicles is prone to shortages. Meanwhile, the availability of land side facilities is currently still adequate for 2020 to 2040. The availability of water side facilities is not sufficient enough from 2019 to 2040.
STUDI KELAYAKAN EKONOMI PEMBANGUNAN UNDERPASS PADA SIMPANG TOHPATI DI KOTA DENPASAR
Authors: Yogeswari Saraswati Ni Putu Delima , Suthanaya Putu Alit , Ariawan Made Agus
Published: August 2022

Private vehicle ownership does not pay attention to the capacity of the road that will cause congestion of the road network in urban areas. Setting The Tohpati Junction with Traffic Signaling Tool is not able to cope, the solution to this condition is to build an underpass. The purpose of the study is to analyze the performance of existing intersections and underpasses in 2025, analyze the amount of costs required for the underpass, analyze the direct benefits of underpass construction, and can be known whether the project is feasible or not with an economic feasibility analysis of the underpass investment built. In addition to using primary data and secondary data in calculations, the method of economic feasibility analysis as a comparison of costs and benefits with indicators Net Present Value (NPV), Benefit Cost Ratio (BCR) and Internal Rate of Return (IRR). The results showed the performance of existing intersections obtained a delay of 373 seconds /smp morning peak hours, for the peak hour of noon 364 seconds / smp, and the peak afternoon 364 seconds / smp, including the level of service F. Simpang assumption underpass built the value of delay peak hours morning 19.02 seconds / smp, for the peak hours of noon 19.33 seconds / smp, and the peak afternoon 18.32seconds / smp, including the level of service A. In realizing the construction of the underpass, it is necessary to pay Rp. 224,964,665,195.28 and direct benefit from the construction of the underpass at Simpang Tohpati in Denpasar City for the cost savings of road users.amounting to Rp.10.407.740.934,00. In general, the underpass construction project at Simpang Tohpati in Denpasar city is economically viable and the terms of the three bank interest rates of 12%,15% and 18% in one year result in a non-negative NPV value, BCR is not less than one and the IRR is not below the bank's interest rate, hence the analysis related to the sensitivity of the bank to the condition of I, II and III.
ANALISIS PENENTUAN SKALA PRIORITAS PEMELIHARAAN DAN PENINGKATAN RUAS JALAN KOTA DENGAN METODE AHP BERDASARKAN PENGADUAN PADA APLIKASI PRO DENPASAR
Authors: Adhiswari Wedagama Dewa Ayu Trisna , Suthanaya Putu Alit , Ariawan I Made Agus
Published: August 2022

Projects carried out by PT. Tunas Jaya Sanur during 2017 is quite diverse, so there is often a variety of potentials related to work safety and has an impact on the surrounding environment. Therefore, PT. Tunas Jaya Sanur implements the Safety, Occupational and Environmental Health Management System. In addition, the director of the company PT. Tunas Jaya also measures the achievement of Management of Occupational Health, Safety and Environment (SMK3L) by using a Key Performance Indicator (KPI). The purpose of this study is to find out work safety and environmental problems (K3L) and to determine the level of success that has been obtained by PT. Tunas Jaya Sanur during 2017 in terms of occupational and environmental safety risks (K3L) based on the main performance indicators (KPI) set by the company. Data collection was conducted using a questionnaire involving 88 respondents who were directly involved in the PT. Tunas Jaya Sanur during 2017. The method of analysis in this study is a quantitative analysis method carried out based on Australian / New Zealand (AS / NZS) standards 4360: 2004, then to measure KPI (Key Performance Indicators) on procedures for calculating KPIs main). The results of the analysis of risks issued by PT. Tunas Jaya is a medium risk (medium risk) of 30 risks, a large risk (high risk) of 14 risk-related risks (very high risk) are 2 risks. The level of success in controlling and controlling that has been done by PT. Tunas Jaya Sanur during 2017 showed that the work safety and environmental management (K3L) of PT. Tunas Jaya Sanur Bali in 2017 is classified as "Very Healthy", with the AA category with a performance score of 94.58%.
PENGARUH FAKTOR-FAKTOR INTERNAL PERUSAHAAN TERHADAP KEBERHASILAN PROYEK KONSTRUKSI GEDUNG DI KABUPATEN GIANYAR
Authors: Agustini Ni Made Diah , Yana A.A. Gde Agung , Parami Dewi A.A. Diah
Published: August 2022

Kemampuan manajemen khusus diperlukan untuk mengelola suatu proyek konstruksi yang rumit demi tercapainya keberhasilan proyek. Meski kriteria keberhasilan proyek telah diketahui kegagalan proyek masih bisa terjadi. Penyebab kegagalan proyek di Kabupaten Gianyar disebabkan oleh perusahaan konstruksi tidak memiliki sumber daya yang cukup, penawaran harga terlalu rendah, hubungan yang kurang baik antara kontraktor dengan mitranya sehingga dapat disimpulkan bahwa kegagalan proyek disebabkan oleh kondisi internal perusahaan tersebut. Tujuan dari penelitian ini adalah untuk menganalisis faktor-faktor dominan pada internal perusahaan yang mempengaruhi keberhasilan proyek konstruksi gedung di Kabupaten Gianyar. Metode pengumpulan data dengan kuesioner dan analisis yang digunakan adalah analisis faktor eksploratori serta analisis regresi linier berganda. Hasil dari analisis faktor dan analisis regresi linier berganda didapatkan lima kelompok variabel baru yaitu Sumber Daya Dan Kemampuan Perusahaan (X1) dengan nilai koefisien regresi ? (Beta) sebesar 0,205, Penerapan Manajemen Konstruksi (X2) sebesar 0,261, Budaya Kerja Yang Efektif (X3) sebesar 0,191, Strategi Perusahaan (X4) sebesar 0,264, serta Perencanaan, Metode dan Teknologi Perusahaan (X5) sebesar 0,207. Dari analisis regresi disimpulkan bahwa kelima faktor internal secara parsial dan simultan berpengaruh positif dan signifikan terhadap keberhasilan proyek konstruksi Gedung.

Special management skills are required to manage a complex construction project in order to achieve project success. Even though the criteria for project success have been known, project failures still occur. The cause of project failure in Gianyar Regency was caused by the construction company not having sufficient resources, the price quote was too low, the relationship between contractors and partners was not good, so it can be concluded that the project failure was caused by the company's internal conditions. The purpose of this study was to analyze the dominant of company's internal factors that affect the success of building construction projects in Gianyar Regency. Methods of data collection with questionnaires and analysis used is exploratory factor analysis and multiple linear regression analysis. The results of the factor analysis and multiple linear regression analysis obtained five groups of new variables and it was concluded that the five internal factors partially and simultaneously had a positive and significant effect on project success with the dominant variable are Corporate Strategy with a regression coefficient value of (Beta) are 0.264, Implementation Construction Management (X2) are 0.261, Company Planning, Methods and Technology (X5) are 0.207, Company Resources and Capabilities (X1) are 0.205, and Effective Work Culture (X3) are 0.191.
دور مواقع التواصل الاجتماعي في تشكيل الوعي السياسي
Authors: Khamoka Idow Abdal
Published: August 2022

تسعى هذه الورقة البحثية إلى معرفة دور مواقع التواصل الاجتماعي في تشكيل وتعزيز الوعي السياسي لدى طلاب الجامعات الحكومية في مدينة دهوك بأقليم كوردستان العراق. ومن اجل التوصل إلى نتائج موضوعية ومقبولة قام الباحث بصياغة مشكلة بحثية ووضع مجموعة من التساؤلات التي يتطلب الاجابة عليها في سياق البحث. اما الفرضية التي بني عليها البحث فتتلخص في أن لمواقع التواصل الاجتماعي دور في تكوين الوعي السياسي لدى الفئة المبحوثة. واعتمد الباحث في جمع المعلومات المتعلقة بالاطار النظري على الدراسات والادبيات المتعلقة بالبحث. كما لجأ الباحث إلى استخدام المنهجين الوصفي والتحليلي في البحث، واعتمد على استبانة بحثية تم تصميمها  لجمع معلومات وآراء عينة البحث المتكونة من (258) طالب وطالبة في جامعتي دهوك ودهوك التقنية باعتبارهما جامعات حكومية. وبعد الانتهاء من كتابة وشرح المفاهيم النظرية وتحليل الجانب الميداني للدراسة توصل الباحث الى مجموعة من النتائج والتعميمات، ومن اهمها ان الطلبة المبحوثين يستخدمون مواقع التواصل الاجتماعي بنسبة عالية ويعتمدون عليها في معرفة المعلومات والأخبار السياسية باعتبارها وسيلة سريعة وغير خاضعة لرقابة فعالة. كما انها تساهم في تفعيل المشاركة السياسية وترسيخ الوعي السياسي لديهم.
قياس وتحليل محددات التجارة الخارجية العراقية للمدة (2004-2019) باستخدام نموذج الجاذبية
Authors: Mustafa Abd Zainab , Sleman Dhaher Abdulhameed
Published: August 2022

حاولت هذه الدراسة تطبيق نموذج الجاذبية على التجارة الخارجية العراقية، وذلك لأهمية هذا النموذج إذ يحتل أهمية كبيرة في تفسير محددات التجارة الخارجية. وقد إستهدفت الدراسة تحديد محددات جاذبية التجارة الخارجية العراقية (الصادرات والواردات) تجاه مجاميع من الدول والمتمثلة في (مجموعة الاتحاد الأوروبي، دول الأميركتين، الدول الآسيوية، الدول العربية). استخدمت الدراسة منهج التحليل الكمي باستخدام بيانات مقطعية (Panel Data). وقد تم الإستعانة بمعادلة الجاذبية لتقدير معلمات النموذج المقترح للدراسة لتحديد مدى تأثير المتغيرات المستقلة (الناتج المحلي الإجمالي للعراق، الناتج المحلي الإجمالي للمجموعات الدولية، المسافة، عدد السكان للعراق والمجموعات الدولية، اللغة، الحدود الجغرافية) على المتغير التابع (نسبة التجارة الخارجية إلى الناتج المحلي الإجمالي). وقد توصلت الدراسة إلى أن 0.78 من التغيرات الحاصلة في المتغير التابع ترجع إلى التغييرات الحاصلة في المتغيرات التفسيرية بدلالة قيمة معامل التحديد R2. وتؤكد نتائج التقدير أهمية تأثير كل من الناتج المحلي الإجمالي للعراق، وكذلك المجموعات الدولية في زيادة حجم التجارة الخارجية العراقية، كما ظهر أهمية عامل اللغة، وحجم السكان للعراق، في حين لم يكن متغير عدد السكان للمجموعات الدولية ذو دلالة إحصائية، وجاءت العلاقة مع الحدود الجغرافية عكسية، وهو عكس ما كان متوقعا. وتوصي الدراسة بتنويع الصادرات، والإهتمام بالبنى التحتية والسياسة الاستيرادية، وتطوير قطاع النقل وتنظيمه.
Investigation of Air Solar Collector with Energy Storage for Domestic Purposes
Authors: Nadhim Saeed Diyar , Younus Abdullah Ayad
Published: August 2022

ABSTRACT

In the current study, a three-pass solar air collector (SAC) connected with a stone storage bed is investigated. The thermal energy storage was used to store energy during the day time and then re-use it at night or during the cloudy hours. Four solar air collectors were used in this research which were connected consecutively to the stone storage bed. High density black stones (440 kg) of different sizes and weights were used as a storing medium. The physical properties of the stones were measured in the lab. The experiments were conducted on clear and partly cloudy days for three random days at a constant air flow rate (0.0377 kg/s) for the climate of the Dohuk city, Iraq. The parameters that affect the thermal performance of (SAC) were evaluated with integration of the stone storage bed. The solar radiation intensity, air temperatures at different locations were measured. Obtained data showed that the stone storage bed gives a temperature difference of about 10℃ after sunset and lasts for about 4-5 hours. The used stone bed has the property of acquiring stored heat for a long time after sunset which was released at night or on partly cloudy days.
Applications of Mixed Reality with Unity and Arduino
Authors: Alkurdi Ahmed Alaa Hani , Bahzad Ahmed Hawar
Published: August 2022

: in a fast-developing world of augmented reality and virtual reality, where advancement in both AR and VR has been unprecedent. there is a case to be made with mixed reality also. Basically, mixed reality a form of augmented reality where physical interactions can be made with computer generated objects placed in the user’s environment using physical input methods. This can have a profound impact on the way augmented reality application are developed and can open a world of endless possibilities for AR applications.

In this paper, a study of mixed reality application development is carried out using Unity as a development environment for mixed reality applications, along with Arduino for the development of different input/output methods used within the experience.

Unity is a game development engine that can be utilized to develop AR/VR/MR applications. The extensive toolkit in Unity enables developers to create applications with 3d models that can be experienced though AR glasses or devices capable of AR. Arduino is an open-source electronics platform based on easy-to-use hardware and software. Using Arduino microcontrollers and a variety of sensors, input and output methods, AR experiences can be made interactable physically.
A Review on Big Data Analytics between Security and Privacy Issue
Authors: Rajab Asaad Renas , Luqman Abdulnabi Nisreen
Published: August 2022

Because of technology, a large number of portable devices, and the great use of networks and the need for them in education, industry, and politics. This widespread has led to the emergence of a huge amount of data, and securing this data has become a very important matter. Big data refers to a very large number of data collected from different sources, this huge amount of data gives us deep insight and the benefit of this is to improve the decision-making process and thus lead to better customer service. Securing this huge amount of data (big data) is very difficult. Because of the large number of data and the continuous flow of this data that's come from different sources. Big data is a term that refers to a large, diverse, and complex amount of data. Big data analytics is a sophisticated and advanced technology used to analyze large, different, and diverse data in order to understand this type of data. However, there are many issues when using and analyzing big data, including the problem of security and privacy. This paper focuses on security and privacy problems and focuses on the biggest privacy issue Big data. The aim of this paper is to study the aspects of security and privacy and to make a comparison of the most important data security methods and the biggest privacy issues.
MIST Ülkelerinde Satın Alma Gücü Paritesi Geçerli mi?
Authors: KARADEMİR Ferhat , EVCİ Samet
Published: August 2022

Satın Alma Gücü Paritesi (SAGP) ekonomi ve finans literatüründe oldukça ilgiyle incelenen konularından biridir. SAGP ülkeler arasında bulunan fiyat seviyesi farklılıklarını ortadan kaldırarak çeşitli para birimlerinin satın alma güçlerini eşitleyen değişim oranını ifade etmektedir. Çeşitli ülke veya ülkelerde çeşitli yöntemler kullanılarak SAGP hipotezinin geçerliliği test edilmiştir. Bu çalışmada ise SAGP teorisinin 1994:01-2022:01 dönemi için MIST (Meksika, Endonezya, Güney Kore ve Türkiye) ülkelerinde geçerli olup olmadığının incelenmesi amaçlanmaktadır. Bu amaç çerçevesinde reel döviz kurlarının durağan olup olmadıklarını analiz etmek için panel birim kök testleri kullanılmaktadır. Birimler arasında yatay kesit bağlılığının bulunmasından dolayı çalışmada bu bağımlılığı göz önüne alan ikinci kuşak birim kök testlerinden Carrion-i-Silvestre vd. (2005) tarafından geliştirilen PANKPSS ve Pesaran (2007) tarafından geliştirilen CADF testleri kullanılmaktadır. CADF testi ile elde edilen bulgular serinin durağan olmadığı ve SAGP teorisinin geçerli olmadığını ortaya koyarken, yapısal kırılmaları dikkate alan PANKPSS testine ait bulgular neticesinde ise serinin durağan olduğu ve SAGP teorisinin desteklendiği sonucuna varılmıştır.
THE SECOND REVIEW REQUESTING CONTROVERS IN CRIMINAL CASES
Authors: Huda Chairul
Published: August 2022

Formally, the review can be carried out more than once, based on the Decision of the Constitutional Court (MK) No. 34/PUU-XI/2013, which states that Article 268 paragraph (3) of the Criminal Procedure Code is contrary to the 1945 Constitution of the Republic of Indonesia and therefore has no binding force as law. This paper intends to discuss the second review's philosophical, juridical, and sociological aspects. The Supreme Court, through SEMA No. 10 of 2009 as strengthened by SEMA No. 7 of 2014, confirms that a review of more than one time is only possible if there is an object of the case there are 2 (two) or more judicial review decisions that conflict one another. The restriction on review from being submitted only once is intended to provide justice to the victim, the community, and the state. The extraordinary effort remains within a measurable corridor and does not limit access to justice for the convict.
Performance of equations for estimation of 24-hour urinary sodium from morning fasting urine samples in a multisite study in India
Authors: KRISHNAN ANAND , AMARCHAND RITVIK , TARIK MOHAMAD , SALVE HARSHAL RAMESH , RAGHAV PANKAJA , PATRO BINOD KUMAR , RAJKUMAR PRABU , SEKHAWAT KUSUM , JOSHI PRADEEP , MATHUR PRASHANT , TULLU FIKRU , RAMAKRISHNAN LAKSHMY
Published: August 2022

Background

Dietary salt intake is an important modifiable risk factor for cardiovascular diseases. Estimation of 24-hour salt intake using morning urine samples needs to be validated in the Indian context. We examined the performance of INTERSALT, Tanaka and Kawasaki equations for the estimation of 24-hour urinary sodium from morning fasting urine (MFU) samples.

Methods

We enrolled 486 adults aged 18–69 years from four regions of India with equal rural/urban and sex representation to provide 24-hour urine samples. The next day, a MFU sample was obtained. Based on the volume and sodium content of the 24-hour urine sample, 24-hour sodium excretion (reference method) was calculated. Sodium levels in the MFU samples were measured along with other parameters required, and the above equations were used to estimate 24-hour urinary sodium levels. Intraclass correlation coefficient (ICC) was used to assess the degree of agreement between the estimates from the reference method and the three equations. Bland–Altman (BA) plots were used to identify systematic bias and limits of agreement. A difference of 1 g of salt (0.39 g of sodium) between the mean salt intake by 24-hour urine and as estimated by equations was considered acceptable.

Results

A total of 346 participants provided both the samples. The mean (SD) daily salt intake estimated by the 24-hour urine sample method was 9.9 (5.8) g. ICC was low for all the three equations: highest for Kawasaki (0.16; 95% CI 0.05–0.26) and least for Tanaka (0.12; 0.02–0.22). Only Tanaka equation provided estimates within 1 g of measured 24-hour salt intake (–0.36 g). BA plots showed that as the mean values increased, all the three equations provided lower estimates of salt intake.

Conclusion

Tanaka equation provided acceptable values of 24-hour salt intake at the population level. However, poor performance of all the equations highlights the need to understand the reasons and develop better methods for the measurement of sodium intake at the population level.
Technology-based business model: A startup perspective
Authors: Sibińska Anna
Published: August 2022

This paper examines how a startup can develop its business model for using virtual reality in the healthcare education sector. Due to the detail of the study, which is required to show the mechanisms of business model modification, a single case study was conducted for a startup located in the Czech Republic. The studied company develops virtual reality technology and solutions in industries such as healthcare, education, social services, engineering, and government sector. The study provides empirical evidence on the main mechanisms shaping the elements of a business model and shows the expansion of virtual reality implementation. The study shows also how the digital capabilities and the information technologies can impact the external and internal business processes that respond to the three approaches of BM development: service-oriented approach, network-oriented approach, and user-driven approach. Business model development is required in today’s market, typically due to the fourth industrial revolution, which leads to automation and digitization of business processes.
The evolution of risk management
Authors: Przetacznik Sylwia
Published: August 2022

The aim of this paper is to present the evolution of approaches towards risk management, starting from the beginnings of this field and ending with modern times. The article provides an overview on the applied approaches towards risk management. It allows to understand the basics of contemporary risk management concepts in enterprises and can provide guidance for further research on risk. The author analyzes in detail the change in approaches towards risk management over the years, focusing in particular on traditional, silo risk management and on the most modern concept—ERM, currently considered the most mature and the most perfect, proactive approach towards risk management in an enterprise. Silo risk management treats individual risks independently and focuses on minimizing risk exposure, while the essence of ERM is the integrated management of all risks to which the organization is exposed and the inclusion of risk management in the organization’s strategy.
Spatiotemporal Design of the Metal-Organic Framework DUT-8(M)
Authors: Miura Hiroki , Bon Volodymyr , Senkovska Irena , Ehrling Sebastian , Bönisch Nadine , Mäder Gerrit , Grünzner Stefan , Khadiev Azat , Novikov Dmitri , Maity Kartik , Richter Andreas , Kaskel Stefan
Published: August 2022

Switchable metal-organic frameworks change their structure in time and selectively open their pores adsorbing guest molecules, leading to highly selective separation, pressure amplification, sensing and actuation applications. The three-dimensional engineering of metal-organic frameworks has reached a high level of maturity, but spatiotemporal evolution opens a new perspective towards engineering materials in the 4th dimension (time) by t-axis design, in essence exploiting the deliberate tuning of activation barriers. This work demonstrates the first example in which an explicit temporal engineering of a switchable metal-organic framework (DUT-8, M1M2(ndc)2dabco, ndc = 2,6,-naphthalenedicarboxylate, dabco = 1,4 diazabicyclo[2.2.2]octane, M1 = Ni, M2 = Co) is presented. The temporal response is deliberately tuned by variation of cobalt content. We present a spectrum of advanced analytical methods for analyzing the switching kinetics stimulated by vapor adsorption using in situ time resolved techniques ranging from ensemble adsorption and advanced synchrotron X-ray diffraction experiments to individual crystal analysis. A novel analysis technique based on microscopic observation of individual crystals in a microfluidic channel reveals the lowest limit for adsorption switching reported so far. The time constants for the bulk ensembles range from 2 - 300 s. Differences in spatiotemporal response of crystal ensembles originate from a delay (induction) time that varies statistically and widens characteristically with increasing cobalt content reflecting increasing activation barriers.
Critical impacts of interfacial water on the photocatalytic C–H conversion of methane
Authors: Sato Hiromasa , Ishikawa Atsushi , Saito Hikaru , Higashi Taisuke , Takeyasu Kotaro , Sugimoto Toshiki
Published: August 2022

On-site and on-demand photocatalytic methane conversion under mild conditions is one of the urgent global challenges for the sustainable use of ubiquitous methane resources. However, the lack of accurate knowledge of the reaction mechanism prevents the development of engineering strategies for methane photocatalysis. Combining real-time mass spectrometry and operando infrared absorption spectroscopy with ab initio molecular dynamics simulations, here we report key molecular-level insights into photocatalytic green utilization of methane. The photoactivated water dramatically promotes the activation of robust C–H bond of methane, and stabilizes the •CH3 intermediates in the interfacial hydrogen-bond network of water. Owing to the moderate stabilization of •CH3, the overall photocatalytic conversion rates are dramatically improved by typically more than 30 times at ambient temperatures (~300 K) and pressures (~1 atm). The increase in reaction activity is noticeable also in C1 to C2 evolution of methane, although water is not explicitly involved in the reaction equation (2CH4 → C2H6 + H2). These marked water-assisted effects in the interfacial chemistry should affect the basic understanding and the designing strategies on the non-thermal heterogeneous catalysis of methane under ambient conditions.
Untargeted metabolomics based prediction of therapeutic potential for apigenin and chrysin
Authors: Cochran Cole , Martin Katelyn , Rafferty Daniel , Choi Jennifer , Leontyev Angela , Shetty Akanksh , Kurup Sonali , Puthanveetil Prasanth
Published: August 2022

Flavonoids belong to the polyphenol superfamily and present in our foods derived from natural sources including fruits and vegetables. Apigenin and Chrysin, prominent flavonoids have been demonstrated to have systemic benefits. Our previous work was first to establish the impact of apigenin and chrysin on cellular transcriptome. In the current study, we have revealed the ability of apigenin and chrysin to alter cellular metabolome based on untargeted metabolomics. Based on our metabolomics data, both these structurally related flavonoids demonstrate diverging and converging properties. Apigenin demonstrated the potential to possess anti-inflammatory and vasorelaxant properties through the upregulation of alpha-linolenic acid and linoleic acid metabolism intermediates. Chrysin on the other hand exhibited abilities to inhibit protein and pyrimidine synthesis along with downregulation of gluconeogenesis pathways based on the metabolites obtained. These metabolic effects were due to the impact of chrysin to modulate L-alanine metabolism and urea cycle. On the other hand, both the flavonoids demonstrated converging effects by their ability to downregulate metabolites involved in cholesterol biosynthesis and uric acid synthesis namely 7-dehydrocholesterol and xanthosine respectively. Our work could provide understanding regarding the various therapeutic potential of these naturally occurring flavonoids which are food constituents to treat metabolic complications in conditions like obesity, diabetes, cancer, and cardiovascular diseases. Further investigation of these natural agents for targeted diseases using whole animal and translational approaches will validate their therapeutic ability and help in curbing an array of metabolic complications.
Viral infection and immunity view of SARS-CoV-2 using RBD-assembled DNA Soccer-ball Framework
Authors: Zhang Jialu , Xu Yunyun , Chen Mingying , Huang Yihao , Song Ting , Yang Chaoyong , Yang Yang , Song Yanling
Published: August 2022

Elevated understanding of the viral infection process contributes to development of neutralizing agents and vaccine to combat infectious diseases. Although crystal structure of single SARS-CoV-2 spike/RBD and host receptor ACE2 is known, the viral attachment and immune response initiated by numbers and distribution patterns of natural spikes on SARS-CoV-2 are still obscure. Leveraging a ~74 nm DNA soccer-ball framework (DSF), we developed an aptamer-guided SARS-CoV-2 RBD precisely assembly strategy, thereby exploring the viral infection and immune response in specific numbers and distributions of RBDs. Thirty evenly distributed RBDs on DSF could achieve sufficient binding affinity against host cell (Kd of 122.2 pM), whereas 60 evenly distributed RBDs on DSF could bind to host cell rapidly (Ka of 0.845 min-1). While RBDs in centralized manner compared to evenly distribution facilitated higher and faster binding to host. Moreover, evenly distributed 20 RBDs on DSF achieved up to 88% immunity elicitation of macrophage cells. Overall, this strategy provides a prospective direction for the assembly of virus-like particles based on DNA origami, thereby facilitating understanding of viral infection and efficient vaccine design.