bluuebunny/crossref_metadata_2025 huggingface dataset:
Tailored Risk Management In Drilling & Completion: Illustrative Case Study Of A Well Campaign
Authors: Zausa F. , Masi S. , Repetto C. , Michelez J. , Rossi N.
Published: May 2021

Risk Management (RM) is awell recognised approach to addressprojects uncertainties, to provideaccurate CAPEX estimates and tohave proactive responses tounplanned events.However, RM is often presented asa standard and repetitive process,disregard to projects diversechallenges. This acceptance is amain obstacle to its successfulimplementation, because this canlead to over complex risk studies forsimple matter or, on the contrary,scarce results for intricate issues.Drilling & Completion projectspresent a high versatility ofsituations (from a standard onshoreworkover to a very challenging deepoffshore exploratory campaign).Project challenges can be verydifferent: technical (HP/HT, newtechnologies, etc), environmental(sensitive areas, deep offshoreconditions, etc), economic (marketconditions, etc), or strategic(partnership, etc).The natural consequence is thateach project requires an adequateresponse in terms of RM. Actually,RM toolbox encompasses a numberof different studies, such as riskregisters, risk mapping, probabilisticCAPEX/schedule, fault trees, etc.Not all studies should besystematically performed. Thus, theRM approach must be tailored toeach project challenges, in order tobring the highest added value to thedecision makers.

eni Drilling, Completion &Production optimization departmenthas built an integrated RM systemthat provides a properly designedworkflow for treating each projectwith a suitable approach accordingto its maturity and other technical,environmental, economic or strategiccriteria.This paper takes advantage of aneni experience on a well campaignand describes how RM approachsupported strategic decisions on theimplementation of technologies(RSS, continuous circulating system,aluminium drill pipe, ceramicprotectors and centralisers) to reducewell operations uncertainties. Thiscase study encompasses thecomplete decision loop, from thecost/benefit analysis of eachtechnology to the measured benefitsfrom the rig operations in terms ofperformance enhancement.Finally, it substantiates the values ofRM in investment decision byaddressing RM in a practical way.This case study will definitely helpto spread a RM culture withinproject management organizations.
Developed Equation For Fitting ASTM Distillation Curves
Authors: Chasib Dr. Khalid Farhod
Published: May 2021

The present work deals with fitting literature data of ASTM Distillation curves and obtain a new correlation suitable to use in modeling when optimizing the refining processes, such as distillation, FCC, catalytic reforming, hydrotreating, etc.

The results showed that the values predicted by a new correlation are very good agreement with data of literature and the range of mean overall deviation (%MOD) is (0.305-0.585).
Improvement Of Rheological Properties Of Al-Dura Asphaltic Binders Using Chemical Modifiers
Authors: Ammouri Dr. Qays Mothanna
Published: May 2021

Treating Iraqi asphaltic binder produced from Al – Dura refinery by either oxygenation or 4% sulfur or 4% nitric acid improved the penetration from 241 mm down to 92 mm, and from (68 - 63 ) mm also it and improved the softening point from 39 OC up to 49 OC, 50 OC, 52 OC respectively and it, improved the ductility from 73 cm up to 100 cm, 102 cm, 106 cm respectively.

When subjecting these treated asphaltic binders to Iraqi environmental conditions, the rheological properties will not changed during 14 months. The studied environmental conditions

were included when  subjecting the treated asphaltic binder samples to (sunlight, water immersion, 1kg load, both sunlight and 1kg load, both water immersion and 1kg load, both sunlight and water immersion and both sunlight, water immersion and  1kg load). Compared with base asphaltic binder supplied directly from refinery without treatment which failed immediately during one week.
Distribution of Pore Pressure Gradient for Some Deep Formations in Iraqi Oil Fields
Authors: Alwan Dr. Kareem A. Alwan , Alhusseini Ahmed K. H. Alhusseini , Almahdawi Dr. Faleh H. M. Almahdawi
Published: May 2021

Pore pressures are the fluid pressures in the pore spaces in the porous formations.Interactive Petrophysic (IP) software is used to determine the pore pressure gradient from logdata. These data are (GR log, Bulk Density and Sonic log).Surfer software is used to create the formation pressure distribution maps. These mapsshow the pore pressure gradient (PPG) for sex formations in contour forms. The formations arechosen depending upon the availability of formation in 11wells/11 fields. These maps areprovided the pore pressure distribution in middle and south of Iraq and eventually, give a clearimagination for high and low pressure regions for each formation separately.Six formation are considered in this research, these formations which existed in earlyCretaceous and late Jurassic (deep formations) are Shuaiba, Zubair, Ratawi, Yammama, Sulaiyand Gotnia.Finally, the outputs of these software helps to explain the abnormal pressure location andtheir distribution for the formation under study, this assists to expected the drilling mud programfor these formation.
Estimation of Rate of Penetration Considering Mechanical, Hydraulic, and Formation Characteristics for Mishref Formation
Authors: Hadi Dr.Hassan Abdul Hadi , Mnati Kadhim Hmood Mnati
Published: May 2021

This paper presents a detailed formulation of a rate of penetration (ROP) model, consideringmany drilling parameters and conditions for obtaining maximum drilling rate as well asminimizing the drilling cost.A regression analysis technique has been usedfor ROP modeling in Mishref formation.The datawere extracted from routinely available mud and wirelinelogs. These data includes weight onbit ,rotary speed,horse per square inch,and transit time.For ROP modeling, data of five wellsinHalfaya oil field in south Iraq were extracted.Statistical software called SPSS was used forimproving the modeling data and to perform linear and nonlinear multiple regression analysis.This improving approach included detection the outliers of modeling parameters, grouping themodeling data, moving average and finally applying the regression analysis.Results of modeling showed that the grouping of modeling data exhibited good convergencewith actual data and the overall model of oil field could produce good fitness with the actualdata in both cases of linear and nonlinear models.Also,a good estimation of drilling cost couldbe obtained when using this model.
Effects and Hazards of Drilling Fluids on Well Drilling Workers and the Administrative Processes Adopted in Iraqi Fields
Authors: Hussain Wisam Hussain
Published: May 2021

Drilling fluids are any fluids which are circulated through a well while drilling in order toremove cuttings from a wellbore. During drilling, large volumes of fluids are circulating throughthe well and into open, partially enclosed or completely enclosed systems at high temperatures.When these drilling fluids are agitated during a circulating process there is significant potentialfor chemical exposure to workers and subsequent health effects. This study seeks to identifymajor areas of exposure to drilling fluids and the health hazards associated with the use ofdrilling fluids. The study also presents some challenges in setting the standards of exposure tothe drilling fluids which have always not been given the same attention or concern as the effectsand risk management of drilling fluids. Some exposure indicators are also presented.Questionnaire has been done on seven Iraqi fields (Nahran Omar,Nasiriya ,Zubair,East Baghdad,North Rumaila, Humrain and Jambur ) to determine the administrative and protective processesadopted by our national companies in order to minimize the drilling fluid exposures. Thequestionnaire has been done also to get know the most important conclusions and use the reliablerecommendations that achieve the research objective.According to the data obtained from the questionnaire, there are no clear, standard and uniqueadministrative and protective processes adopted by Iraqi drilling company in different sites. The studyrecommended the necessity of evaluating their processes related with reducing the risks of drilling fluidexposures and establishing a specialized committee to develop such drilling fluid systems.
Production of biosurfactant from Candida cruzi isolated from produce water oil fields in Basrah for microbial enhance oil recovery
Authors: Al-Tamimi Wijdan H. Al-Tamimi , Burghal Ahmed A. Burghal , Abu-Mejdad Najwa M.J.A. Abu-Mejdad
Published: May 2021

The produced water of Nahran Omar oil fields used for isolated the biosurfactant produce Candidacruzi which enhanced by using carbon and nitrogen sources, the biosurfactant production was followedby measuring the oil spreading, emulsification activity, oil collapse and cleaning oil contaminatedvessels. The crud biosurfactant was able to spreading the oil (24) mm with (8%) emulsification activityand oil collapse of (++) the result of cleaning oil contaminated vessels revealed the recovered of oilfrom the wells of vessels. Under optimization of carbon and nitrogen sources the results revealed thatthe largest oil displacement was (9) mm with dextrin the maximum emulsification power was ( 92.8%and 92.5% ) for lactose and fructose respectively, these results demonstrated the high potential ofemulsifiers produced by C. cruzi that can play an important role in application in enhance oil recovery
Effect of Different Quenching Media on Microstructure, Hardness, and Wear Behavior of Steel Used in Petroleum Industries
Authors: Mohmmed Jabbar Hussein Mohmmed , Al-hashimy Zahid I. Al-Hashimy
Published: May 2021

Medium carbon steel always used in most parts of the oil and gas industry, due to their cheap, simplemanufacturing and easy deformation. However, as-rolled medium carbon steel usually does not meetthe demands for many petroleum applications where high hardness and strength are needed; mainlybecause of their limitations in some mechanical features. Hence, many methods of thermal treatmenttechniques were adopted with a view to manipulate its structure and thus extend its scope ofapplications.This study focus on using a proper heat treatment to enhance medium carbon steelproperties.Quenching and tempering treatments are usually the end of any manufacturing process to productionof a machine component. However, the internal and residual stresses which generate during the heattreatments due to the non-uniform the quenched layer depth lead to distortion or cracked themachine component result in deteriorate the properties. Thus, the selection of optimum parameters ofthe quenching process is very important to ensure the achievement of the desired properties of themachine component. The main aim of this study is to get the optimal conditions for heat treatmentwhich brought the best combination of mechanical properties of medium carbon steel withouttempering treatment. Thus, in current study, an investigation of effects of polymer solution media onthe quenching process was carried out with samples made of medium carbon steel. The sampleswere quenched in four different concentrations (0, 10, 15, 20) % of polymer (polyalkylene glycol)solution and set of quenched samples were tempered at 400 oC for 1h. The resulting as-quenched andtempered microstructures were compared and evaluated. Mechanical properties (hardness and wearrate) of the samples were determined using suitable standards. The results show that the quenchedsamples in polymer solution with 10% polyalkylene glycol were brought the best combination ofmechanical properties as compared with other quenched and tempered samples.
Environmental Assessment of Heavy Metals in Soil of West Quarna -2 Oil field at Basrah-Southern Iraq
Authors: Al-Saad Hamid T. Al-Saad , Karem Duha S. Karem
Published: May 2021

In this study, concentrations of eight heavy metals (Pb, Ni, Cu, Cr, Zn, Co, Cd and Fe) wereinvestigated during 2016 in ten stations at West Qurna-2 oil field in Basra city Southern of Iraq. Thesemetals were analyzed by using Atomic absorption spectrometry. The mean values of the metals in thesoil range for : pb (18.23 -39.15), Ni (28.34-46.35), Cu (10.12-18.22), Cr (50.64-59.23), Zn (25.23-40.48), Co (5.34-11.27), Cd (5.99-10.23) and Fe (1150.12-2185.83) ug/g dry weight. ContaminationFactor (CF), Enrichment factor (EF) and Geo accumulation index (I-geo) were computed and comparedin different stations of the soil oil field. Total concentration of metals in soil samples found to be in thisorder: Fe>Cr> Ni >Zn> Pb>Cu> Co>Cd. The main reason for different in concentration could be dueto the effects of contamination caused by various activities in the oil field and the urban .Total organiccarbons and grain size analysis were also determined, and there is a good correlation between TOC andHeavy metals. These data are a first of its kind in this important area and could be used as a baseline forcoming study in the futures.The purpose of this study were to determine the spatial distribution of trace metals in the soil of theWest Qurna-2 oil field, and to quantify potentially ecological risk of trace metal pollution.
The Role of Chemistry of the Oil-Field Water in the Distribution of Reservoir Pressures: A Case Study of Mishrif Reservoir in the Southern Oil-Fields, Iraq
Authors: Al-Mimar Heba Sadoon , Awadh Salih Muhammad
Published: May 2021

Mishrif Formation is the main reservoir in oil-fields (North Rumaila, South Rumaila, Majnoon, Zubair and West Qurna) which located at Basrah southern Iraq. The Inductively coupled plasma-Mass spectrometer (ICP-MS) was used for the water chemistry analysis and Scanning Electron Microprobe (SEM) for the purpose of mineralogy diagnosis. A weak acidic water of salinity six-time greater than seawater plays a role in generating the formation pressure and controlling the fluid flow. The potentiometric subsurface maps were modeled and the direction of super-pressure sites that are of a great importance in the oil exploration were marked to pay attention during future drilling.
Hen và COVID-19. Tổng hợp các quan điểm và khuyến cáo chung
Authors: Trần Anh Tuấn
Published: May 2021

Từ tháng 12/2019, viêm đường hô hấp do Coronavirus chủng mới (SARS-CoV2) đã được báo cáo đầu tiên ở Vũ Hán (Trung Quốc). Bệnh nhanh chóng lay truyền đến nhiều vùng khác nhau của Trung Quốc, sau đó đến hàng loạt quốc gia trên thế giới. Ngày 11/02/2020, TCYTTG chính thức đặt tên là COVID-19, và sau đó ngày 11/03/2020 đã được công bố là đại dịch toàn cầu.
Ngay từ thời gian đầu, bệnh nhân hen là một trong những đối tượng được quan tâm đặc biệt chính là bệnh hô hấp mạn tính phổ biến hàng đầu. Thật vậy, bệnh nhân hen, nhất là hen nặng, đứng trước nguy cơ dễ nhiễm SARS-CoV-2, dễ có biến chứng nặng và nguy cơ tử vong cao trong thời kỳ đại dịch COVID-19.
Nhiều Tổ chức Y tế, Hội chuyên ngành trên thế giới đã nhanh chóng công bố những khuyến cáo dành cho bệnh nhân hen: TCYTTG, CDD, ATS, BTS, Canada, Úc, GINA, ARIA, EAACI,...
Chúng tôi xin tổng hợp những quan điểm và một số khuyến cáo chung dành cho bệnh nhân hen trong thời kỳ đại dịch COVID-19 này.
MỐI TƯƠNG QUAN GIỮA FERRITIN HUYẾT THANH VỚI NỒNG ĐỘ SẮT GAN VÀ T2* TIM TRÊN CỘNG HƯỞNG TỪ Ở BỆNH NHI THALASSEMIA
Authors: Nguyễn Thị Huyền , Nguyễn Thị Mai Hương , Phan Tuấn Hưng
Published: May 2021

Thalassemia là bệnh lý di truyền gây thiếu máu tan máu. Truyền máu thường xuyên thường liên quan đến tình trạng quá tải sắt ở các cơ quan. Để điều trị tình trạng thừa sắt đòi hỏi phải đánh giá chính xác tình trạng ứ sắt của cơ quan. Mục tiêu: đánh giá tình trạng quá tải sắt và mối tương quan giữa ferritin huyết thanh, nồng độ sắt trong gan (LIC- liver iron concentration) và T2* tim dựa trên cộng hưởng từ (MRI) của bệnh nhân thalassemia tại bệnh viện Nhi Trung ương năm 2018-2020. Đối tượng, phương pháp nghiên cứu: Nghiên cứu mô tả cắt ngang, từ 8/2018- 8/2020, chúng tôi thu thập được 79 bệnh nhân nhi thalassemia truyền máu định kỳ tại bệnh viện Nhi Trung ương. Tiến hành đánh giá đặc điểm lâm sàng, xét nghiệm và chụp MRI đánh giá tình trạng ứ sắt ở gan (LIC) và tim (T2*). Kết quả nghiên cứu: Ferritin huyết thanh trung bình (3298.6 ± 3055,2 ng/ml) và LIC trung bình (12.90 ± 5,6 mg/g) đều ở mức trung bình nặng, T2* tim trung bình là 29 ±11,7 ms. Ferritin huyết thanh có mối tương quan yếu với LIC và T2* tim (tương ứng với r= 0,441 và -0,32), LIC và T2*tim không có mối tương quan. Kết luận: Tình trạng quá tải sắt ở gan ở mức cao, nhưng không tương quan với tình trạng quá tải sắt ở tim. Ferritin có mối tương quan yếu với LIC và T2* tim.
BƯỚC ĐẦU XÂY DỰNG THANG ĐÁNH GIÁ ĐỊNH LƯỢNG ĐỐI VỚI ĐỀ ÁN & BÁO CÁO KẾT QUẢ HOẠT ĐỘNG CẢI TIẾN CHẤT LƯỢNG
Authors: Đỗ Văn Niệm , Đặng Thanh Tuấn , Lê Thị Thu Thúy
Published: May 2021

Giới thiệu: Công cụ đánh giá tốt là điều kiện cần để hỗ trợ các nhóm cải tiến và đảm bảo chất lượng hoạt động cải tiến. Mục tiêu: Thiết kế mẫu đánh giá đề án và báo cáo kết quả cải tiến theo thang điểm định lượng. Phương pháp: Kết hợp tổng quan tài liệu với thảo luận nhóm và phỏng vấn chuyên gia để xây dựng thang đo, đánh giá giá trị nội dung và giá trị diễn đạt. Phân tích tỷ số giá trị nội dung (CVR) và điểm số ảnh hưởng (IIS) của từng mục để quyết định nội dung được giữ lại. Kết quả: Toàn bộ 22 mục của mẫu đánh giá đề án đạt yêu cầu với CVR>0,6. IIS của các mục 1.6, 2.1b, 3.3 và 3.5 ở ngay dưới ngưỡng 1,5 đối với tiêu chí “quan trọng”. Tương tự như vậy ở mục 2.1c đối với tiêu chí “cần thiết”. Đối với mẫu đánh giá báo cáo hoạt động cải tiến: Có 3 mục là 3.3, 3.4 và 3.5 không đạt yêu cầu CVR > 0,49 và IIS > 1,5 ở tiêu chí “quan trọng” và “cần thiết” (mục 3.3 và 3.5). Những mục này không đảm bảo giá trị diễn đạt nhưng là nội dung bắt buộc trong chuẩn đánh giá của cơ quan quản lý nhà nước, nên được giữ lại trong biểu mẫu cuối cùng. Kết luận: Thang đánh giá đề án và báo cáo cải tiến đảm bảo yêu cầu cơ bản về giá trị nội dung nên có thể sử dụng. Cần nghiên cứu thêm để hoàn thiện giá trị diễn đạt và đánh giá thêm về giá trị cấu trúc.
Pengembangan Sistem Informasi Pengolahan Stok Barang Toko Dual Comm Tanjungpinang Berbasis Client Server
Authors: Setiawan Hendi
Published: May 2021

Pengolahan stok barang di Toko Dual Comm saat ini dalam pengolahan data barang masuk dan keluar meliputi barang pembelian atau penambahan stok barang dan juga untuk keluar sebagai penjualan. Agar proses pengolahan data barang masuk dan keluar dapat berjalan dengan efektif dan efisien, maka sudah seharusnya untuk menggunakan aplikasi sistem informasi pengolahan data barang masuk dan keluar yang dapat menangani proses barang masuk dan keluar. Dengan dibentuknya suatu sistem dengan proses terkomputerisasi berbasis client server, maka diharapkan dapat mengatasi masalah-masalah yang telah terjadi.Dalam melakukan penelitian ini, metode pengembangan perangkat lunak yang digunakanadalah metode waterfall yang terdiri dari rekayasa sistem, analisis, desain, implementasi, pengujian dan pemeliharaan. Aplikasi ini dibangun dengan Bahasa pemograman Netbeans dan PhpMyAdmin.  Hasil dari penelitian ini adalah sistem perangkat lunak yang berbasis client server untuk proses pengolahan data barang masuk dan keluar. Dengan adanya aplikasi ini diharapkan untuk mempermudah dan mempercepat kinerja pihak Toko Dual Comm terutama dibagian accounting dalam proses barang masuk dan keluar.
Pemanfaatan Augmented Reality Pada Periklanan Koran Dengan Menggunakan Vuforia Cloud Recoginiton Dan Format Video Berbasis Andro
Authors: Romdoni Mochammad Rizki , Perdana Kevin
Published: May 2021

Jasa periklanan pada koran merupakan salah satu media promosi yang berkembang pesat di seluruh kota, namun media yang digunakan pemasangan iklan tersebut hanya menampilkan gambar berupa desain grafis 2D. Peningkatan inovasi dan kreativitas sangat dibutuhkan agar iklan grafis ini terlihat lebih menarik dan menambah manfaat bagi pembaca. Inovasi baru yang dapat diterapkan pada koran khususnya pada iklan yaitu penerapan teknologi augmented reality. Penggabungan teknologi smartphone dengan augmented reality menggunakan metode marker-based sangat memungkinkan menghasilkan konten iklan yang lebih menarik dengan iklan bergerak (motion), sehingga pada smartphone akan menghadirkan video, mengikuti marker yang tertera pada iklan grafis koran. Penelitian ini menggunakan Vuforia SDK dengan penggabungan paket cloud recognition dan paket video playback sehingga video atau konten dapat diunggah dan ditampilkan secara dinamis dan pendeteksiannya dilakukan secara online.
Sistem Informasi Pengolahan Data Reservasi Berbasis Client Server Dengan Metode Fefo Pada Inspired Bridal Studio Tanjungpinang
Authors: Pricillia Titania , Saputra Danandjaya
Published: May 2021

Hampir semua proses pengelolaan data yang terjadi pada Inspired Bridal Studio masih bersifat manual menggunakan pencatatan tangan. Sehingga menimbulkan beberapa persmasalahan diantaranya seperti terbatasnya tempat penyimpanan kertas dalam jumlah yang banyak dan tergolong tidak aman, pencarian data masih belum efisien dan proses pemesanan yang menghabiskan waktu lama.Berdasarkan permasalahan yang ada, penulis melakukan wawancara, observasi dan merancang sebuah sistem baru dengan membangun sistem informasi yang mengantisipasi kelemahan-kelemahan pada proses reservasi dan pengolahan data pelanggan pada Inspired Bridal Studio. Dalam melakukan penelitian ini metodologi yang digunakan untuk pengembangan sistem informasi ini adalah menggunakan metodologi prototype. Aplikasi ini dibangun dengan bahasa pemrograman Java dan SQL dengan menggunakan Java Netbeans dan PhpMyAdmin sebagai aplikasinya.Hasil dari penelitian ini adalah sistem perangkat lunak yang dapat mendukung proses pengolahan data reservasi, data pelanggan, data katalog dan data sumber daya manusia serta dapat mencetak laporan reservasi, laporan pelanggan, laporan katalog, laporan sumber daya manusia, kartu pelanggan dan kwitansi.
Aplikasi E-Money Pada Pasar Mahasiswa Sekolah Tinggi Teknologi Indonesia Tanjungpinang
Authors: Dwi Nurul Huda  , Widodo Suyamto
Published: May 2021

Pasar Mahasiswa merupakan salah satu kegiatan wajib yang harus diikuti oleh mahasiswa setiap tahunnya.. Kegiatan pasarmahasiswa pembayaran tidak dilakukan dengan menggunakan mata uang rupiah melainkan menggunakan koin yang disediakan oleh panitiasebagai alat tukar pada proses jual beli di dalam pasar mahasiswa. Penggunaan koin dalam proses jual beli dinilai kurang efektif dan efisienmaka dari itu dikembangkanlah aplikasi yang memakai konsep E-money sebagai pengganti penggunaan koin. Aplikasi ini dirancangmenggunakan Bahasa pemrograman php dan MySql sebagai basis data, kemudian untuk Text editor menggunakan Notepad++ dan MySql frontuntuk editor basis data dengan menggunakan metode waterfall sebagai pengembangan perangkat lunak.Penelitian ini menghasilkan suatuprogram yang dapat melakukan pengolahan data pembeli, pemilihan menu dan laporan penjualan serta pembelian . program ini dapatmemantau segala transaksi yang terjadi antara pembeli maupun penjual sehingga meminimalisir kesalahan kesalahan yang dapat terjadi padapasar mahasiswa Sekolah Tinggi Teknologi Indonesia Tanjungpinang.
Sistem Perhitungan Waktu Rental Studio Musik Berbasis Arduino Menggunakan Validasi Rfid
Authors: Saputra Danandjaya , Andry Iman Juliswanto  , Zulfachmi
Published: May 2021

Kemajuan teknologi di era globalisasi sekarang ini sudah semakin pesat. Salah satu contoh hasil dari berkembangnya teknologi adalah komputer, yaitu sebuah perangkat elektronik untuk memanipulasi data yang cepat dan tepat serta dirancang dan diorganisasikan supaya secara otomatis menerima dan meyimpan data input, memprosesnya dan menghasilkan output dengan menggunakan suatu program yang tersimpan di memori komputer. Mikrokontroler merupakan sistem komputer yang seluruh atau sebagian besar elemenya dikemas dalam satu keping tunggal (chip) IC. Oleh karena itu, mikrokontroler sering disebut single chip microcomputer. Mikrokontroler biasanya dikelompokan dalam satu keluarga yang mempunyai bebrapa varian. Setiap varian mikrokontroler memiliki karakteristik yang berbeda-beda sesuai dengan penggunaanya, tetapi masih tetap saling mendukung dalam pemrograman (kompatibel). Tiap varian mempunyai perbedaan antara lain pada kapasitas memori RAM sebagai penampung data olahan dan memori flash PEROM sebagai penampung kode-kode program atau intruksi. Mikrokontroler tersusun dalam satu chip dimana prosesor, memori, dan I/O terintegrasi menjadi satu kesatuan kontrol sistem sehingga mikrokontroler dapat dikatakan sebagai computer mini yang dapat bekerja secara inovatif sesuai dengan kebutuhan sistem. Sistem ini dirancang dengan menggunakan RFID modul sebagai validasi member/user untuk memudahkan user dan penjaga studio musik, dan Arduino uno sebagai pusat kendali. Ketika user akan melakukan rental studio musik maka user harus memiliki RFID card, dan apabila waktu rental akan habis makan lampu pemberitahuan akan mati menandakan waktu rental telah habis, apabila user masih memiliki sisa waktu maka user dapat melakukan penyimpanan waktu rental.
Sistem Kendali Lampu Otomatis Berbasis Iot (Internet Of Things) Menggunakan Node Mcu
Authors: Setiawan Hendi , Farzin Abdaoe  , Kevin Perdana
Published: May 2021

IoT (Internet of Things) merupakan suatu konsep yang bertujuan untuk memperluas manfaat dari konektivitas internet yang tersambung secara terus menerus. IoT (Internet of Things) dapat dimanfaatkan pada sebuah ruangan sebagai alat untuk mengendalikan peralatan elektronik yang dapat dioperasikan dengan aplikasi smartphone melalui koneksi internet. Aplikasi dari sistem kendali lampu berbasis (IoT) Internet of Things ini menggunakan modul NodeMCU ESP8266 sebagai mikrokontroler dan aplikasi Android sebagai alat pengendali. Sistem ini digunakan untuk mengendalikan lampu hidup ataupun mati. Selain itu dalam rancangan system ini juga memakai relay yang digunakan sebagai penghubung lampu dengan sistem. Dari hasil pengujian dan analisa, pengendalian peralatan elektronik pada sistem kendali lampu ini beroperasi sesuai perintah yang diberikan. Selama system terkoneksi dengan jaringan internet secara stabil dan continue, tidak akan terjadi kendala pada sistem kendali lampu berbasis IoT (Internet of Things) menggunakan NodeMCU.
Sistem Informasi Pengolahan Data Penjualan Dan Peramalan Pembelian Setiap Pelanggan Dengan Metode Trend Projection Berbasis Webs
Authors: Setyoningrum Nanny Raras , Giandicka  , Nuafal Muhammad Kautsar
Published: May 2021

PT. Aldora Sukses Perkasa is an ice cream distributor located on Jalan Martadinata Tanjungpinang. PT. Aldora Sukses Perkasa usually only makes sales by salesmen by visiting shops that are already customers. The problems faced by the company are the absence of an online sales system so that it can make it easier for customers to order the items needed and the customer purchase forecasting system that can predict customer purchases in the next period. With the development of “SISTEM INFORMASI PENGOLAHAN DATA PENJUALAN DAN PERAMALAN PEMBELIAN SETIAP PELANGGAN DENGAN METODE TREND PROJECTION BERBASIS WEBSITE PADA PT. ALDORA SUKSES PERKASA TANJUNGPINANG“ this very helpful in processing data, information on inventory, sales reporting and reporting of inventory data
Audit Sistem Informasi Manajemen Dan Akademik (Simak) Stt Indonesia Tanjungpinang Menggunakan Standar Cobit 5.0 Domain Dss (Deli
Authors: Manihuruk Wan Hendra , Muhammad Firdiyansyah  , Iim Ildapendra
Published: May 2021

Sekolah Tinggi Teknologi Indonesia (STTI) Tanjungpinang adalah salah satu perguruan tinggi berbasis teknologi di Tanjungpinang. Berdiri pada tahun 2007, STTI Tanjungpinang telah banyak melakukan inovasi-inovasi untuk menunjang jalannya proses kegiatan belajar mengajar da­­n civitas akademika. Salah satu inovasi yang dilakukan adalah telah digunakannya Sistem Informasi Manajemen Akademik dan Keuangan (SIMAK). SIMAK adalah sistem yang digunakan di STTI Tanjungpinang dengan penanggung jawab pengelolaan nya diserahkan kepada pusat pengolahan data (PUSLAHTA). Data-data yang masuk antara lain data-data mahasiswa,data nilai mahasiswa,data krs mahasiswa,dan data lainnya. PUSLAHTA di STTI Tanjungpinang dikelola oleh satu orang kepala bagian PUSLAHTA dan dibantu oleh staf. Dikarenakan begitu banyak dilakukannya pengolahan data di SIMAK,menjadikan SIMAK merupakan salah satu sistem yang paling sering digunakan oleh mahasiswa dan dosen ataupun civitas akademika yang lain. SIMAK yang digunakan selama ini belum pernah dilakukan audit secara menyeluruh,oleh karena itu perlu adanya audit agar dilakukan evaluasi terhadap kekurangan-kekurangan pada SIMAK dan mempertahankan atau merubah agar bisa menjadi lebih baik. Audit yang dilakukan adalah menggunakan standar COBIT versi 5.0 dengan mengambil domain Deliver, Service, and Support (DSS). Domain ini diambil dikarenakan perlu mengetahui seperti apa pengawasan yang telah dilakukan,kemudian mengevaluasi atas apa yang menjadi kekurangan dan memberikan penilaian terhadap apa yang selama ini telah dilakukan
Protagonismos de mulheres nas artes e na sociedade: da representação à resistência vol. 2
Authors: Silva Meire Oliveira
Published: May 2021

Neste segundo volume, as questões voltadas ao protagonismo feminino nas Artes e nas literaturas continuam sendo verificadas por meio de estudos que se propõem a analisar a força das autorias africana e afro-brasileira para encontrar outras escritas e manifestações artísticas do nordeste brasileiro em trabalhos que reúnem vozes ancestrais e contemporâneas como testemunhas e porta-vozes das memórias.
Revisiting subjunctive obviation in French: a formal acceptability judgment study
Authors: Feldhausen Ingo , Buchczyk Sebastian
Published: May 2021

Even though the weakening of the subjunctive disjoint reference effect, also known as obviation, plays an important role in the research of subjunctives in (non-)Romance languages, to the best of our knowledge it has never been verified experimentally. The goal of our paper is to test how native speakers of (European) French evaluate sentences displaying factors that (according to Ruwet 1991) should weaken obviation using a formal acceptability judgment task. Our results show that we were unable to replicate Ruwet’s observations (when averaging over multiple participants): only one out of six factors described by Ruwet seems to clearly weaken obviation, namely Coordination. We conclude that (a) French may be a language for which formal experimentation of complex data is useful, (b) idiolects should not be ignored, and (c) our results challenge theoretical accounts of obviation weakening. Finally, we relate our study to the ongoing discussion on whether informal methods of collecting acceptability judgments (such as introspection by the author) need to be verified by formal methods.
Comparação de algoritmos para detecção de bots sociais nas eleições presidenciais no Brasil em 2018 utilizando características do usuário
Authors: Santos Bianca Lima , Ferreira Gabriel Estavaringo , Do Ó Marcelo Torres , Braz Rafael Rodrigues , Digiampietri Luciano Antonio
Published: May 2021

O uso de bots sociais com fins políticos tem se tornado uma preocupação cada vez mais relevante e tem levantado alertas sobre o impacto nas discussões democráticas. Este trabalho apresenta um estudo de caso sobre o uso de bots nas discussões políticas durante o período do segundo turno das eleições brasileiras de 2018, visando construir um modelo de detecção automática para bots e comparando o uso de algoritmos de inteligência artificial explicáveis e não-explicáveis. Primeiramente foi construído um conjunto de dados rotulando manualmente contas entre bots e humanos. Então foram aplicados algoritmos de regressão linear, árvores aleatórias, Bayesiano ingênuo, multilayer perceptron e random forest. Foi identificado que mesmo algoritmos mais simples e explicáveis como árvore aleatória têm um desempenho semelhante a algoritmos mais complexos como random forest. Utilizando apenas características do usuário, foi possível identificar mais de 46% dos bots, porém todos modelos apresentaram uma precisão não maior que 52% nessa tarefa.
Business intelligence and analytics to support management in construction: a systematic literature review
Authors: Lopes Anderson Brunheira , Boscarioli Clodis
Published: May 2021

Management is essential to meet the requirements defined in a project, such as business objectives and stakeholder expectations. The computational tools in the Business Intelligence and Analytics category have great potential to contribute to management, providing important managerial information about the business. Tools of this type are widely used in the most varied sectors of the industry, but in the construction industry, the scenario is different, with much to move foward. Therefore, the present work presents a survey of the Business Intelligence and Analytics tools applicable to the civil construction sector and its uses. To this end, a systematic literature review was conducted, which analyzed 1407 articles from six databases, where several applications were identified, the most relevant in the area of cost management, budget preparation and work safety.
Descoberta de conhecimento em um jogo sério para o ensino de plantas industriais: um estudo de caso Utilizando árvores de decisão
Authors: Dutra Júnior Nilo Cesar Da Silva , Billa Cleo Zanella , Adamatti Diana Francisca
Published: May 2021

Os jogos sérios são mais uma das ferramentas que podem auxiliar no processo de ensino-aprendizagem, visto seu aspecto lúdico e motivador. Paralelamente, cada vez mais são geradas informações em bases de dados em todas as áreas do conhecimento e é preciso obter dados conclusivos, que possam gerar conhecimento. Este processo é conhecido como Knowledge Discovery in Databases - KDD, e utiliza algoritmos de aprendizado de máquina para obter informações valiosas e posteriormente interpretá-las. Este artigo apresenta um estudo relativo ao tema de descoberta de conhecimento em bases de dados utilizando um jogo sério do tipo simulador, para estudantes de ensino superior. O processo de descoberta de conhecimento utilizou a técnica de árvores de decisão e os resultados encontrados mostram algumas ações/estratégias dos estudantes, bem como suas dificuldades durante o jogo.
A Strain-Based Method to Estimate Longitudinal Force for Intelligent Tires by Using a Physics-Based Model
Authors: Zhou Haichao , Li Huiyun , Yang Jian , Chen Qingyun , Wang Guolin , Han Tong , Ren Jieyu , Ma Te
Published: May 2021

Tires are essential components of vehicles and the only vehicle components in contact with the road. The tire longitudinal force originating from the contact between the tire and road can enhance traction and braking and contribute to the directional stability of vehicles. If the longitudinal tire force can be accurately estimated, vehicle safety can be improved. This study established a longitudinal tire physics-based model combining the brush model with the flexible ring model to develop a strain-based intelligent tire system for estimating the longitudinal tire force. The developed longitudinal dynamic model was used to study tire strain characteristics under pure longitudinal slip conditions. An algorithm was developed for estimating the longitudinal tire force through feature extraction and data fitting of the tire strain. A finite-element tire model was established to simulate the longitudinal force. Comparing the simulated and estimated forces indicated that the proposed algorithm can accurately predict the longitudinal force of intelligent tires and thus provide useful information to vehicle stability control systems.
Residual, Corrosion & Tribological Behavior of HVOF Sprayed Sustainable Temperature-Dependent Carbon-Based Hybrid Composite Coating
Authors: Tyagi Ankit , Murtaza Qasim , Walia Ravinderjit Singh
Published: May 2021

At present, cost-effective coatings that cause less pollution are in great demand; to decrease frictional losses, carbon-based hybrid composite coatings have been developed using a high-velocity oxy-fuel (HVOF) spray process. The microstructural, tribological, corrosion, and mechanical properties of these coatings have been evaluated using high-resolution X-ray diffraction (HRXRD), field emission scanning electron microscopy-Energy dispersive X-ray Spectroscopy (FESEM-EDS), Raman spectrum, Vickers micro-hardness tester, µ-360 cos(α) residual stress analyser, corrosion tester, and high temperature tribometer. The residual stress, corrosion and tribological behaviour at high temperatures were investigated using a pin-on-disc high-temperature tribometer. The tribological performance was evaluated using a high-temperature tribometer, and the experimental result shows that a coefficient of friction (COF) varies from 0.12 to 0.52, while wear results were in the range of 45 µm to 120 µm, as the test condition of temperature ranging from 50 °C to 350 °C, load from 60 N to 90 N and sliding velocity from 0.1 m/s to 0.4 m/s respectively. The experimental results of corrosion testing show that the mass loss decreases from 0.10 g to 0.04 g, when samples were dipped for 1 h; when the samples were dipped for 8 h, the mass loss of hybrid composite coating varied from 0.12 g to 0.045 g. The tribological test showed a 78.9 % increase in micro-hardness, a 78 % decrease in residual stress, and 60 % and 62.5 % decreases in mass loss due to corrosion at 1 h and 8 h, respectively, a 76.9 % decrease in COF and 62.5 % reduction in the wear at test condition of 350 ºC temperature, a sliding velocity of 0.4 m/s and 90 N load.
Austeridade em Portugal: medidas implementadas e seu impacto no acesso, eficiência e qualidade do serviço nacional de saúde
Authors: Nunes Alexandre Morais , Matos Andreia Afonso de
Published: May 2021

Em abril de 2011, uma grave crise econômica e social eclodiu em Portugal, levando o país a solicitar ajuda financeira ao Fundo Monetário Internacional, à Comissão Europeia e ao Banco Central Europeu que, em troca, exigiu o cumprimento de um conjunto de várias medidas de austeridade constante de  um memorando. Parte dessas medidas focalizaram o Serviço Nacional de Saúde, ao qual foi exigido um corte na despesa e um conjunto de reformas promotoras de eficiência que gerassem economias por meio da melhor realocação dos recursos e da redução do investimento. Este artigo pretende, através da análise da literatura e das políticas de saúde implementadas, mostrar os resultados/efeitos da austeridade  e os passos já dados no período pós crise. Como resultados se verificou algumas melhorias ao nível da eficiência, mas graves problemas no acesso aos serviços de saúde. Em conclusão pode-se afirmar que a austeridade foi necessária, mas foi pensada apenas para aquele momento e não numa perspectiva de  construção da política de saúde para o futuro.
Uma proposta de instrumento de avaliação da qualidade em farmácias comunitárias utilizando um sistema de informação geográfica
Authors: Fernandes Brígida Dias , Freitas Rodrigo Randow de , Melchiors Ana Carolina , Pontarolo Roberto
Published: May 2021

Farmácias desempenham um papel importante na saúde pública uma vez que podem ser o primeiro contato do paciente com o sistema de saúde, fato que torna essencial a análise da distribuição geográfica desses estabelecimentos e da qualidade das atividades desenvolvidas. O objetivo deste estudo foi desenvolver um instrumento de avaliação da qualidade dos serviços prestados em farmácias comunitárias, bem como testar sua aplicação por meio de um sistema de informação geográfica para a visualização dos resultados. Após uma revisão da literatura científica, um conjunto de indicadores de qualidade foi submetido a análise de especialistas. A partir da matriz final construída, foram elaborados questionários observacionais e autoadministráveis e aplicados em farmácias pertencentes a uma cidade da região sudeste do Brasil. Foram coletadas as coordenadas geográficas das farmácias e procedeu-se a digitalização da área de estudo e subsequente criação de mapas conforme o ranking de qualidade. A matriz final conteve cinco dimensões da qualidade, as quais abrangem 76 critérios considerados importantes para a avaliação das atividades desenvolvidas na farmácia no que tange à importância do acesso à estrutura e aos processos disponíveis, sendo estes eficazes e organizados de modo a promover cuidado adequado em saúde. Quanto à aplicação do instrumento, identificou-se que haviam bairros com apenas uma farmácia cujos serviços eram de baixa qualidade, fato que requer atenção e exige alterações para que a população não seja desassistida quanto ao acesso a importantes intervenções em saúde. A visualização dos dados em mapas facilitou a avaliação da qualidade e a identificação das áreas que necessitam de melhorias.
The role of laparoscopic staging for the management of gastric cancer
Authors: Yüksel Cemil , Erşen Ogün , basceken salim ilksen , mercan ümit , yalkın ömer , Culcu Serdar , Bakırarar Batuhan , Bayar Sancar , Ünal Ali Ekrem , Demirci Salim
Published: May 2021

AİM
Staging laparoscopy enables us to perform palliative treatment, neo-adjuvant therapy for curative resection or direct curative resection and making a decision with minimal morbidity by avoiding from unnecessary laparotomies. In the present study, the importance of staging lapafoscopy was retrospectively investigated by using clinical and pathologic data.

METHODS
Data of 70 out of 350 patients who underwent diagnostic laparoscopy due to gastric cancer at Surgical Oncology department between August 2013 and January 2020 were retrospectively analyzed.
RESULTS
Peritoneal biopsy was positive for malignity in 41 (58.5%) and negative in 29 (41.5%) of the patients who underwent SL. Peritoneal cytology (PC) results were negative in 32 (45.7%) patients and positive in 38 (54.3%) patients. Peritoneal biopsy and cytology results were concurrently positive in 35 patients and concurrently negative in 26 patients.
CONCLUSİONS
In conclusion, even the most developed imaging methods cannot provide 100% staging, therefore SL plays an important role in treatment of gastric cancer and laparoscopic staging is essential as a simple, inexpensive, safe and well tolerated method in patients who have the suspicion of peritoneal disease and who cannot be clearly evaluated with pre-operative methods.
Validity and efficacy of diets used for preoperative weight reduction among patients qualified for bariatric surgery
Authors: Jastrzębska Weronika , Boniecka Iwona , Szostak-Węgierek Dorota
Published: May 2021

Introduction. Bariatric surgery is the most effective method of weight reduction among patients suffering from morbid obesity. Reduction of body weight before surgery is an important element. The aim of the study was to present the current knowledge on preoperative weight reduction and diet for this purpose.
Material and methods. To achieve the aims of the paper, articles available in the PubMed / MEDLINE database published in 2005-2020 were used, as well as the guidelines of societies such as Metabolic and Bariatric Surgery Chapter of the Association of Polish Surgeons, American Association of Clinical Endocrinologists, The Obesity Society and American Society for Metabolic & Bariatric Surgery, International Federation for Surgery of Obesity and Metabolic Disorders-European Chapter and European Association for the Study of Obesity.
Results. Studies show that even a modest reduction in weight in the early preoperative period facilitates surgery and reduces the number of complications. The available data do not support the effect of preoperative weight loss on increased postoperative weight loss. The use of balanced, energy-restricted diet in the preoperative period prepares the patient for changes in the way of nutrition, which improves the nutritional status of patient. Low calorie (LCD) or very low calorie (VLCD) diet can be an effective method of weight loss before surgery, however, this approach does not allow to modify eating habits. The use of a very low calorie ketogenic diet (VLCKD) remains under discussion.
Conclusions. There is a need for large randomized trials to assess short and long term benefits of preoperative weight loss and methods of weight loss among patients qualified for bariatric surgery, also the standardization of nutritional management in the preoperative period.
Emergency appendicectomy during COVID-19 pandemic – A single UK centre experience
Authors: Salgaonkar Hrishikesh , Aladeojebi Adebimpe , Murcott David , Nnaji Martin , Tsiamis Achilleas , Cheruvu Chandra VN
Published: May 2021

Background - In December 2019 following an outbreak of Novel coronavirus infection (COVID-19) in Wuhan, China, it spread rapidly overwhelming the healthcare systems globally. With little knowledge of COVID-19 virus, very few published reports on surgical outcomes; hospitals stopped elective surgery, whilst emergency surgery was offered only after exhausting all conservative treatment modalities. This study presents our experience of outcomes of emergency appendectomies performed during the pandemic.
Methods – Prospectively we collected data on 132 patients in peak pandemic period from 1st March to 5th June 2020 and data compared with 206 patients operated in similar period in 2019. Patient demographics, presenting symptoms, pre-operative events, investigations, surgical management, postoperative outcomes and complications were analysed.
Results – Demographics and ASA grades of both cohorts were comparable. In study cohort 84.4% and 96.7% in control cohort had laparoscopic appendicectomy. Whilst the study cohort had 13.6% primary open operations, control cohort had 5.3%. Mean length of stay and early post-operative complications (<30 days) were similar in both cohorts apart from surgical site infections (p = 0.02) and one mortality in study cohort.
Conclusion – In these overwhelming pandemic times, although conservative treatment of acute appendicitis is an option, a proportion of patients will need surgery. Our study shows that with careful planning and strict theatre protocols, emergency appendicectomy can be safely offered with minimal risk of spreading COVID-19 infection. These observations warrant further prospective randomised studies.

Keywords - appendicectomy, COVID-19, Coronavirus, emergency surgery, laparoscopy
Comparison Of Emergency And Elective Colorectal Cancer Surgery- A Single Center Experience
Authors: Ocak Sönmez , Bük Ömer , Çiftci Ahmet , Yemez Kürşat
Published: May 2021

Abstract:
Introduction: About one-third of colorectal cancer surgery are performed as urgent surgery. This retrospective study aims to compare urgent surgery with patients those performed elective colorectal cancer surgery.
Matherials and Methods: One hundred and sixty patients data those performed colorectal cancer surgery were analysed retrospectively. Patients were divided into two group; urgent surgery group (n=29) and elective surgery group (n=131). Demographics and clinicopathological features of the groups were compared.
Results: There were no significant difference between groups in terms of age,blood transfusion requirement, additional surgical intervetion. Urgent surgery was performed more frequently in male patients .Urgent surgery has higher complication rates but no significant difference were observed in length of hospital stay. Total harvested lymph node number were similar between groups but in urgent surgery group metastatic lymph node number was significantly higher.
Conclusion: Urgent colorectal resections for colorectal cancers can be performed with regarding the oncological principles