bluuebunny/crossref_metadata_2025_split huggingface dataset:
Diagnostic value of postsystolic shortening of the left ventricular myocardium assessed during speckle tracking stress echocardiography on the treadmill in patients with coronary artery disease
Authors: Stepanova A. I. , Radova N. F. , Alekhin M. N. 
Published: February 2022

Aim To evaluate the diagnostic capacity of left ventricular (LV) postsystolic shortening (PSS) values obtained by speckle-tracking stress-echocardiography (stress-EchoCG) using a treadmill test in determining the functional significance of the degree of coronary artery (CA) stenosis.Material and methods The study included 132 patients (80 men aged 65.0±9.3 years) with suspected or previously verified diagnosis of ischemic heart disease. Stress-EchoCG with the treadmill test was performed for all patients. Strain parameters were determined by two-dimensional speckle-tracking on gray-scale images before and after the exercise. Values of LV postsystolic index (PSI) and LV mean postsystolic time (PST) were calculated. Coronary angiography was performed for all patients. Patients were divided into 3 groups based on the severity of CA stenosis according to the G. G. Gensini score.Results LV PSS values at rest did not significantly differ between the patient groups. After completion of the exercise, the mean LV PSI was significantly higher for patients with pronounced CA stenosis than in the group without CA stenosis or with moderate CA stenosis: 8.9 %  [3.8; 10.7 %] vs. 3.8 % [2.2; 6.8 %] (p=0.012) and 3.4 %  [2.2; 6.2 %] (p=0.012), respectively. The mean LV PSI after completion of the exercise indicated the presence of pronounced CA stenosis with a sensitivity of 75 % and a specificity of 61 % (area under the curve, AUC, 0.74±0.06; р<0.001). After completion of the exercise, the mean LV PST was significantly greater for patients with pronounced CA stenosis than in the group without CA stenosis or with moderate CA stenosis: 27.4 [18.7; 34.7] ms vs. 18.4 [10.8; 26.5] ms (p=0.036) and 20.9 [14.2; 29.5] ms (p=0.036), respectively. The mean LV PST after completion of the exercise exceeding 23.5 ms suggests pronounced CA stenosis with a sensitivity of 71 % and a specificity of 65 % (AUC 0.69±0.06; p=0.004). A complex evaluation of the LV PSI, the LV local contractility disorder (LCD) index, the LV PST, and LV LCD index allows enhancement of the test sensitivity in diagnozing pronounced CA stenosis.Conclusion Determination of LV PSS in speckle-tracking stress-EchoCG may be useful for evaluating the functional significance of the degree of CA stenosis to enhance the sensitivity of stress-EchoCG in patients with pronounced CA stenosis.
A Theory for Understanding Parental Workload and Capacity to Care for Children With Medical Complexity
Authors: Lawrence Patricia R. , Spratling Regena 
Published: February 2022

Background and PurposeChildren with medical complexity (CMC) experience poor health outcomes despite the high cost of care, and their parents face challenges in providing complex care. Poor health outcomes may be related to an imbalance between parental demands to manage care and their ability to meet the demands needed to provide complex care. However, this phenomenon has not been explored. In addition, much of the existing research focused on CMC lacks an overarching theoretical framework. The purpose of this article is to outline factors that impact families of CMC described in the literature. This article proposes a modified framework using theory derivation, which highlights the concepts of parental workload and capacity and demonstrates how they are related to CMC health.MethodsA revised theoretical framework using theory derivation by Walker and Avant is presented using findings from the CMC literature that most affect the parents of these children.ResultsApplying content from two existing theories using concepts of relevance results in a framework that provides richer insight into the relationship between parental workload and parental capacity, particularly when parental workload outweighs parental capacity. This framework allows for the examination of how an imbalance between workload and capacity impacts CMC health outcomes.Implications for PracticeAlthough further study is needed to test the proposed theory, the framework can be used to examine these relationships with hopes of developing interventions to decrease parental workload and enhance parental ability.
Perancangan Sistem Informasi Peminjaman Alat dan Peralatan Laboratorium Berbasis RFID
Authors: Choerudin Akhmad 
Published: February 2022

Di zaman yang modern ini untuk mendapatkan informasi sangatlah mudah, bahkan informasi dari segala penjuru dunia. Laboratorium di zaman sekarang berperan penting dalam mengadakan riset, penelitian, mengerjakan penelitian dan pelaksanaan mata kuliah praktikum. Dan di laboratorium terdapat aktifitas pinjam meminjam alat dan barang untuk Dosen, Karyawan dan Mahasiswa. Sistem peminjaman alat dan barang saat ini masih menggunakan sistem manual seperti buku besar dan formulir peminjaman. Kondisi seperti ini dapat menemui beberapa kendala seperti pencarian barang yang dipinjam relatif lama, kesalahan dalam pencatatan peminjaman barang, dan tidak mencatat barang yang sudah dikembalikan.
Laboratorium membutuhkan sebuah perancangan sistem informasi otomatis untuk mempermudah dalam proses pinjam meminjam barang. Perancangan sistem peminjaman alat dan barang berbasis RFID di Laboratorium Teknik Elektro IT Telkom Purwokerto diharapkan dapat membantu mempermudah manajemen peminjaman alat dan barang dan memoderenisasi sistem yang ada pada saat ini. Alat ini bekerja dengan cara membaca Frequency RFID Tag yang terdapat dikartu identitas peminjam menggunakan sensor RFID reader, kemudian menampilkan pesan pada layar Liquid Cristal Display (LCD) berupa kode RFID Tag tersebut. RFID reader ini dapat membaca dengan jarak efektif kurang dari 5 cm dengan sudut kemirringan pembacaan ideal 0º.
NodeMCU ESP8266 pada alat berguna sebagai pusat pemrosesan data dan untuk menghubungkan alat ke server local. Server local digunakan sebagai media penyimpanan identitas, asset laboratorium, dan histori peminjaman. Selanjutnya pada halaman aplikasi website akan tampil informasi prosedur peminjaman barang, inventaris alat laboratorium dan prosedur pengembalian barang. Percobaan pembacaan RFID Tag dilakukan dengan total 15 Kartu RFID, dengan skenario pengujian pembacaan sensor RFID reader terhadap jarak dari 1 cm sampai dengan 5 cm mendapatkan hasil pembacaan jarak 1cm - 3cm berhasil dibaca dengan baik, pada jarak 4cm terdapat 4 kartu yang dapat dibaca dan 11 kartu yang gagal, dan pada jarak 5cm – 7cm kartu RFID semuanya gagal terbaca. Pembacaan kartu RFID berdasarkan sudut kemiringan 15º sampai dengan 90º mendapatkan hasil 15º - 80º kartu dapat terbaca dengan baik, sedangkan pada sudut 90º semua kartu gagal dibaca. Serta pengambilan data QOS (Quality of Service) dengan variasi waktu yang berbeda beda yaitu 1 menit, 3 menit, 5 menit, 7 menit, 10 menit, 13 menit dan 15 menit didapatkan rata rata Delay 2,49 detik, throughtput 958,14 bps, dan Packet Loss -0,0014%
Optimalisasi Bit Error Rate (BER) Jaringan Optik Hybrid Pada Sistem DWDM Berbasis Soliton
Authors: Prakoso Rama Panji , Wahyudi Eka , Masykuroh Kholidiyah 
Published: February 2022

Abstrak
Bit Error Rate (BER) merupakan perbandingan antara kesalahan (error) dengan bit yang dikirimkan keseluruhan. Bit Error Rate berfungsi untuk menguji seberapa banyak kesalahan pembacaan di sisi penerima setiap detiknya. Berdasarkan pengertian dari BER peneliti akan melakukan penelitian performansi Bit Error Rate terhadap pengaruh perubahan daya input laser mulai dari -4, -2, 0, 2, 4 dan perubahan panjang serat optik 20 km, 60 km, dan 100 km. Peneliti akan membentuk dua sistem simulasi DWDM dengan menggabungkan dua penguat optik yaitu Raman Optical Amplifier (ROA) dan Erbium Doped Fiber (EDFA) posisi dari penguat optik diletakkan secara Booster-Preamplifier dan Inline-Preamplifier. Berdasarkan perbedaan pada daya input laser BER mengalami peningkatan kelayakan sistem saat daya laser dinaikkan mulai dari -4 dBm sampai 4 dBm. Unjuk kerja yang dihasilkan paling baik adalah 8.97E-23 pada Skenario Inline-Preamplifier. Berdasarkan perbedaan panjang serat optik, semakin jauh panjang serat optik maka kelayakan sistem menurun dengan BER terburuk adalah 0.001 pada panjang serat optik 100 km.
Kata kunci: Bit Error Rate, Booster, Inline, Daya input, Preamplifier
Abstract
Bit Error Rate (BER) is a comparison between the error (error) with the bit sent as a whole. Bit Error Rate is used to test how many errors are read on the receiving end every second. Based on the understanding of BER, researchers will conduct research on the performance of Bit Error Rate on the effect of changes in laser input power ranging from -4, -2, 0, 2, 4 and changes in optical fiber length of 20 km, 60 km, and 100 km. Researchers will form two DWDM simulation systems by combining two optical amplifiers, namely Raman Optical Amplifier (ROA) and Erbium Doped Fiber (EDFA). Based on the difference in the input laser power, the BER experienced an increase in the feasibility of the system when the laser power was increased from -4 dBm to 4 dBm. The best performance is 8.97E-23 in the Inline-Preamplifier Scenario. Based on the difference in optical fiber length, the farther the length of the optical fiber, the lower the feasibility of the system with the worst BER is 0.001 at 100 km optical fiber length.
Keywords: Bit Error Rate, Booster, Inline, Input power, Preamplifier
STRATEGI PENGEMBANGAN AGRIBISNIS PADI ORGANIK PADA KOMUNITAS PETANI ORGANIK ASTORAHAYU DESA ASTOMULYO, KECAMATAN PUNGGUR, LAMPUNG TENGAH
Authors: Andika Aan , Amri Khairul , Zulkarnaen Zulkarnaen 
Published: February 2022

<p><em>Public demand for rice food has increased while the availability of organic rice is still limited. So that organic rice farming is more promising to be developed. This study aims to determine the agribusiness developing strategy for organic rice in the Astorahayu Organic Farmers Community, Astomulyo Village, Punggur District, Central Lampung Regency. The analytical method</em><em>s</em><em> used </em><em>are</em><em> IFE, EFE, IE, Analysis of Strengths, Weaknesses, Opportunities</em><em>,</em><em> Threats (SWOT)</em><em>,</em><em> and Analytical Hierarchy Process (AHP). The analysis results show</em><em>ed</em><em> that the IFE matrix's weight is</em><em> </em><em>2.70</em><em>,</em><em> and the EFE matrix is</em><em> </em><em>2.35. The IE matrix is in a hold and maintains position with a market penetration strategy and product development.</em><em> </em><em>SWOT analysis produces 12 alternative strategies that can be applied for </em><em>organic rice</em><em> expansion. The AHP results show that the level of criteria </em><em>are</em><em> the main priority in developing organic rice </em><em>are</em><em> increasing marketing and institutionalization with a weight of 0.301. At the objective level, the primary importance of developing the organic rice agribusiness system is expanding the production capacity of organic rice with a weight of 0.508. At the actor level, the farmer in the Astorahayu organic paddy community with a weight of 0.435. The primary priority alternative strategy is to improve the skills of organic rice cultivation by utilizing the cooperation</em><em> of</em><em> the organic farming community</em><em> members</em><em> to increase productivity with a weight of 0.183.</em><em></em></p>
KEBERLANJUTAN USAHA TANI MINA PADI DI KALURAHAN SUMBERAGUNG KAPANEWON MOYUDAN DAERAH ISTIMEWA YOGYAKARTA
Authors: Kriska Mesalia , Harsoyo Harsoyo , Sulami Rezki Putri , Putra Novam Tri Wikarno , Kusuma Yenni 
Published: February 2022

<p align="justify"><em>Mina padi is a rice-fish integrated farming system that could increase agricultural field productivity. By implementing this innovation, agricultural land production could increase</em><em>,</em><em> and farmers will benefit from two different commodities, namely rice and fish. The involvement of mina padi farmer groups and support from the agricultural extension officer is needed to achieve maximum results in implementing of Mina padi cultivation. One of many areas that have already been implementing a mina padi farming system in the Special Region of Yogyakarta is Sumberagung Village, Moyudan District. In Sumberagung Village</em><em>,</em><em> there are 5 mina padi groups with a total of around 64 members that are still actively running mina padi business. The main aim of this study is to determine the sustainability of mina padi farming in Sumberagung Village, Moyudan District, Sleman Regency. The analytical framework used in this study is the Threats, Weakness, Opportunity, and Strength framework by analyzing the threats, weaknesses, opportunities, and strengths of the Mina padi group business activities. This analysis will provide a sustainable development strategy for the mina padi farming system in Sumberagung Village, Moyudan District. The strategies that would sustain mina padi farming business sustainability are intensif</em><em>ying</em><em> the mina padi farming field, </em><em>using the </em><em>tanam jajar legowo (tajarwo) farming system, and reducing pesticide usage, develop</em><em>ing</em><em> mina padi agritourism, and organizing training for mina padi to the younger generation.</em><em></em></p>
Produktivitas dan Literasi Peneliti Badan Tenaga Nuklir Nasional (BATAN) dalam Menulis Karya Tulis Ilmiah
Authors: Noer’Aida Noer’Aida 
Published: February 2022

<p>Produk akhir seorang peneliti adalah karya tulis ilmiah (KTI) yang diterbitkan dalam publikasi nasional maupun internasional. Artikel yang terbit pada publikasi yang terindeks di Scopus merupakan salah satu capaian tertinggi bagi peneliti. Kualitas KTI seharusnya berbanding lurus dengan kemampuan literasi informasi yang dapat diukur melalui kemutakhiran, jenis, dan jumlah acuan yang digunakan. Tujuan kajian adalah untuk mengetahui produktivitas dan tingkat literasi peneliti Badan Tenaga Nuklir Nasional (BATAN) melalui KTI yang terindeks di Scopus. Metode yang digunakan adalah bibliometrik dengan analisis sitasi dan deskriptif evaluatif. Populasi kajian adalah KTI peneliti BATAN yang terindeks di Scopus sejak tahun 2013 sampai 2017 yaitu sebanyak 305 judul. Sementara sampel kajian adalah KTI peneliti BATAN sebagai penulis pertama sebanyak 149 judul dengan jumlah acuan yang digunakan 2.937 judul. Hasil kajian menunjukkan bahwa produktivitas KTI peneliti BATAN meningkat pada kurun waktu tersebut. Tingkat literasi informasi peneliti berdasarkan kemutakhiran daftar acuan yang digunakan adalah lebih dari 5 tahun (60,84%). Jenis sumber acuan yang paling banyak digunakan adalah jurnal ilmiah (72,45%). Jumlah acuan yang paling banyak digunakan berkisar antara 10-20 judul dan lebih dari 20 judul (83,22%). Banyaknya jumlah acuan yang digunakan menunjukkan bahwa secara umum tingkat literasi peneliti BATAN masuk dalam kategori baik, namun belum optimal. Untuk lebih meningkatkan kemampuan literasi informasi peneliti, pustakawan dapat mengoptimalkan layanan dengan memberikan pelatihan literasi informasi bagi peneliti.</p>
ANALISIS INFORMASI PATEN LEMBAGA ILMU PENGETAHUAN INDONESIA TERSERTIFIKASI TAHUN 1991-2018
Authors: Wijaya Didik Prata 
Published: February 2022

<p>Kekayaan intelektual merupakan aset berharga yang perlu dikelola secara terencana dan si stematis agar dapat terl indungi dan bermanfaat bagi masyarakat, salah satunya ialah melalui paten. Lembaga Ilmu Pengetahuan Indonesia (LIPI) merupakan salah satu lembaga penelitian yang menghasilkan paten. Pengkajian ini bertujuan untuk mengetahui (1) jumlah paten LIPI yang tersertifikasi, (2) jenis/kategori paten, (3) satuan kerja LIPI yang paling banyak menghasil kan paten terserti fikasi , (4) jumlah inventor paten tersertifikasi, (5) perbandingan jumlah paten tersertifikasi dan inventor, dan (6) jumlah rata-rata klaim per paten. Objek pengkajian adalah paten LIPI yang tersertifikasi pada tahun 1991-2018. Data paten diperoleh secara online melalui pangkalan data Information Tracer of Intellectual Property and Document Accountability Inquiry (INTIP DAQU). Data yang diperoleh disajikan dalam bentuk tabel dan dianalisis secara deskriptif. Hasil pengkajian menunjukkan bahwa LIPI memiliki 158 judul paten tersertifikasi pada tahun 19912018 dengan jenis paten terbanyak berupa proses/metode, yakni 69 judul. Paten tersertifikasi terbanyak dihasilkan pada tahun 2010 dan Pusat Penelitian Fisika merupakan satuan kerja LIPI penghasil paten tersertifikasi terbanyak dengan 30 paten. Berdasarkan gender, inventor laki-laki sebanyak 416 orang dan inventor perempuan 229 orang. Jumlah klaim setiap paten terbanyak terdapat pada tahun 2018 yaitu 200 klaim, sedangkan jumlah klaim paling sedikit pada tahun 1994 dan 1996 yaitu 0 klaim. Jumlah rata-rata klaim per paten tertinggi terdapat pada tahun 2018 (28,5 klaim per paten) dan terendah pada tahun 1994,1995,1996, dan 1997 yaitu 0 klaim per paten.</p>
Modeling and Economic Analyses of Graded Particle Injections in Conjunction with Hydraulic Fracturing of Coal Seam Gas Reservoirs
Authors: Santiago Vanessa , Ribeiro Ayrton , Johnson Raymond , Hurter Suzanne , You Zhenjiang 
Published: February 2022

Summary
Hydraulic fractures can enhance well productivity from stress-sensitive naturally fractured reservoirs, such as coalbed methane or coal seam gas (CSG) reservoirs. Graded proppant injection (GPI) has been proposed to enhance long-term, far-field interconnectivity between the created hydraulic and short-term, enhanced natural fracture permeability, resulting from fracture fluid leakoff and lowered net effective stress. This novel study shows how applying GPI with hydraulic fracturing treatments resulting in an increased stimulated reservoir volume (SRV) can enhance well productivity and improve CSG well economics.
A commercially available reservoir model and history-matched hydraulically fractured coal seam case are used to evaluate well performance differences between a hydraulic fractured reservoir and one including GPI application. A dual-porosity system and the Palmer and Mansoori model are used to simulate initial and long-term permeability accounting for reservoir depletion (i.e., increased net effective stress and matrix shrinkage). A previously validated case study is used to describe the post-embedment benefits of GPI based on the porosity model and history-matched reservoir properties. A net present value (NPV) can then be calculated for each scenario, based on the production differences and typical Australian CSG costs.
Our results show that permeability enhancement is achieved beyond the hydraulically fractured region for all post-GPI stimulation cases. An optimal SRV can be found relative to permeability that maximizes the incremental NPV from GPI application. The next most significant parameters after permeability that influence the economic outcomes are fracture porosity and coal compressibility. A larger SRV yields higher cumulative gas production over 30 years with up to 7.2 times increase over gas production without GPI. This study substantially increases our understanding of how to model and understand the benefits of GPI application along with hydraulic fracturing to increase the SRV in CSG wells.
A Sustainable Fluid System for Sand Consolidation
Authors: Vaidya Nirupama , Prabhu Rasika , Santamaria Juan-Carlos , Abivin Patrice , Susmarski Josh 
Published: February 2022

Abstract
Sand production from unconsolidated sandstone reservoirs can adversely affect reservoir productivity and project profitability. Sand consolidation is a remedial technology that consists of injecting a fluid into the formation to bind the sand grains together and provide strong cohesion. Most existing consolidation technologies use solvent-based fluids, which increases the operational complexity of achieving successful treatment without compromising retained permeability and raises environmental concerns. A novel solvent-free resin system for sand consolidation addresses these challenges by using water-based fluids that are capable of providing high compressive strength while maintaining high permeability, thus simplifying operations and reducing environmental concerns.
The new fluid system consists of a resin, a curing agent, and a surfactant dispersed in water. The consolidation mechanism is designed to be triggered downhole by temperature. The fluid system was fully characterized in terms of viscosity, stability at elevated temperature, and performance to provide operational control and reduce pumping risks in a wide range of reservoir applications. Regained permeability and compressive strength of the consolidated sand were quantified for clean sand and sand with different amounts of clays.
The consolidation fluid uses limited resin with the balance being predominantly water. The large volume fraction of water acts as a spacer, resulting in high retained permeability (greater than 75%) after the resin has set. Once mixed, the fluid has very low viscosity (less than 5 cP at ambient temperature and 170 s-1) and is stable for at least 24 hours. Additionally, the consolidation mechanism is uniquely triggered by temperature, providing more control and reducing operational risks. This mechanism allows all required components to be mixed together and the treatment to be single stage, thus drastically improving operational efficiency. The new consolidation fluid functions well over a wide temperature range (104°F to 230°F) yielding an unconfined compressive strength of up to 2800 lbf/in2 while maintaining regained permeability of over 75%. It is also compatible with significant amounts of clays, thereby enabling its use in challenging reservoir conditions.
The new consolidation fluid system introduces more sustainability into the oilfield. It performs well over wide reservoir permeabilities and temperature ranges and is also compatible with clays and oils. The operational simplicity and efficiency gains offered make this fluid an attractive alternate to existing resin-based sand consolidation products.
Calcium Sulfate Scale Dissolution Efficiency by Various Chemicals Additives
Authors: Alissa Faisal M , Aljuryyed Norah W , Balharth Salem A , Leoni Matteo 
Published: February 2022

Abstract
Calcium sulfate scale is one of the challenges that face production stability in the oilfield industry as it is one of the most challenging scales to manage. Sulfate-scales are very hard to dissolve because of their low solubility-product. This work studies the dissolution capacity of different chemical additives and recipes on calcium sulfate scales. In this work, the maximum dissolution capacity (gram of scale/mole of chelating agent) of various chemical additives and recipes will be studied to evaluate the efficiency in the dissolution of Calcium Sulfate scales. Several experiments were conducted at multiple doses, pH, and in-presence of a catalyst. Potassium Carbonate was used as a catalyst in the dissolution of Calcium Sulfate scales. The performance of each additive was studied in a catalyzed and non-catalyzed pathway and with various. A Series of experiments conducted showed that parameters such as the additive-dose, pH, and a catalyst affect the dissolution efficiency. The dissolution performance efficiency of each additive (Lactic Acid, Citric Acid, N,N-Dicarboxymethyl Glutamic Acid (GLDA), and Gluconic Acid) was compared to the additive performance efficiency under a catalyzed pathway in a formulated recipe. The outcome of this work will contribute to the economic value added by finding the most efficient and cheap recipe to remove Calcium Sulfate scales from the wellbore.