A study of pre-analytical errors in the clinical biochemistry laboratory at Victoria hospital, BMCRI, Bangalore

To categorize and calculate the percentage error of pre-analytical variables in the clinical biochemistry laboratory. Prospective observational study conducted for two months with documenting the frequency and type of pre-analytical errors occurring in venous samples. The total errors recorded were 1.31%. Insufficient volume followed by haemolysis amounted to a major proportion of errors. Continuous pre-analytical phase evaluation and taking corrective measures to make this phase error-free, have to be done.

Implementasi Association Rule Dengan Algoritma Apriori Pada Data Peminjaman Buku Upt Perpustakaan Universitas Lampung Menggunakan Metodologi CRISP-DM

Abstrak - UPT Perpustakaan Universitas Lampung merupakan UPT yang bergerak di bidang perpustakaan. Memiliki dua layanan berdasarkan interaksinya yaitu layanan teknis dan layanan pengguna. Saat ini UPT Perpustakaan Universitas Lampung memiliki buku yang tercetak sebanyak 142.776. Penelitian ini bertujuan menemukan pola association rule dengan teknik data mining memanfaatkan software RapidMiner 9.1 dalam penerapan algoritma Apriori. Metode penelitian Cross Industry Standar Process for Data Mining (CRISP-DM) dengan tahapan business understanding phase, data understanding phase, data preparation, modelling phase, evaluation phase dan deployment phase. Data yang digunakan dalam penelitian ini adalah data transaksi peminjaman buku dari tahun 2014 hingga 2017 dengan total data peminjaman buku sebanyak 170.115. Hasil pemodelan association rule dengan algoritma apriori menggunakan nilai support 0.3 dan nilai confidence 0.3 diperoleh judul buku “Metodologi pengajaran bahasa” akan meminjam “English for tourism :panduan berprofesi di dunia pariwisata” nilai support 1 dan confidence 1. Rekomendasi untuk pembelian buku disarankan mengikuti pattern lampiran hasil asosiasi.Kata kunci: UPT Perpustakaan Universitas Lampung, Data Peminjaman Buku, Data Mining, Association Rule, CRISP-DM.

Tailored vs. Standard Curriculum and General English Achievement: A Study of Teachers’ Views

This study was conducted in two phases. The first one is the preliminary phase aimed at tailoring the standard curriculum based on learners’ needs analysis. The second one is the main phase, intended to evaluate the tailored curriculum based on teachers’ views. The participants in the preliminary phase of the study (tailoring the curriculum) were 346 non-native male and female undergraduate students who received the same Pre-Requisite General English course at their first semester in university. They were studying different majors, including Accounting, Architecture, Civil Engineering, Electrical Engineering, and Mechanical Engineering. The participants in the main phase (evaluation of the tailored curriculum by teachers) were 10 non-native male (7) and female (3) teachers who taught the Pre-Requisite General English course through the tailored curriculum. The findings of the study supported the hypothesis that the teachers have a positive attitude toward using the tailored curriculum in teaching the Pre-Requisite General English course. It seems that the implementation of this tailored program, which is based on learner-needs-analysis, can enhance the effectiveness of the English for General Purposes (EGP) course, compared to the standard one.

Pengembangan lembar kerja siswa dengan menggunakan pendekatan penemuan terbimbing untuk siswa SMP pada materi luas permukaan dan volume bangun ruang sisi lengkung

Based on the observations made when PPL in SMP Negeri 21 Malang, students used worksheets that have the look monotonous and only contains a summary of the material and the questions. The aim of this development is to develop worksheets for surface area and volume of material with curved side using guided discovery. Development of student worksheets surface area and volume of material with curved side using guided discovery pendekatanl was developed by adapting the model Plomp. In developing learning media composed into five phases: (1) the initial investigation phase, (2) the design phase, (3) the realization phase / construction, (4) the test phase, evaluation, and revision (5) the implementation phase. Based on the results of the validation and field trials student worksheets developed by the percentage of 75.78 percent valid, practically with the percentage of 87.5 percent, and said to be invalid because the evaluation value obtained by six students meet the minimum passing criteria given is 75. Berdasarkan hasil observasi yang dilakukan ketika PPL di SMP Negeri 21 Malang, LKS yang digunakan siswa memiliki tampilan yang monoton dan hanya berisi rangkuman materi dan soal-soal. Tujuan dari pengembangan ini adalah mengembangkan LKS untuk materi luas permukaan dan volume bangun ruang sisi lengkung dengan menggunakan pendekatanl penemuan terbimbing. Pengembangan lembar kerja siswa materi luas permukaan dan volume bangun ruang sisi lengkung dengan menggunakan pendekatanl penemuan terbimbing ini dikembangkan dengan mengadaptasi model Plomp. Dalam mengembangkan media pembelajaran terdiri menjadi lima fase yaitu : (1) fase investigasi awal, (2) fase desain, (3) fase realisasi/konstruksi, (4) fase tes, evaluasi, dan revisi (5) fase implementasi. Berdasarkan hasil validasi dan uji coba lapangan lembar kerja siswa yang dikembangkan valid dengan persentase 75,78 persen, praktis dengan persentase 87,5 persen, dan dikatakan valid karena nilai evaluasi yang didapatkan oleh enam siswa memenuhi kriteria kelulusan minimal yang diberikan yaitu 75.

RE-DESIGN OF A MOTORCYCLE HELMET FOR USE IN URBAN TRAFFIC: CONCEPTUAL DESIGN AND TESTING

This paper presents the re-design approach of an urban motorcycle helmet to prevent users bypassing the strap fastening system. Related studies show that although a full-face helmet provides the maximum protection to a rider, in practice, full-face helmeted riders in urban traffic tend to improperly fasten it. On that notion, the design goal was to conceive a helmet that combines the advantages of different helmet types while responding to urban driving needs. During design ideation possible solutions were examined focusing on different ways of accessing and fixating the helmet on a rider’s head, without using a strap fastening system. Preliminary concept development produced three design concepts, that were evaluated using two sets of prototypes: (a) the 3D printing method under a 1:2 scale was used to detect any design faults, while the 3D modeled concepts were evaluated in four different crash impacts regarding total deformation and von-Mises stress, and (b) 1:1 models of the three concepts were used by experienced riders to assess possible usability issues during helmet placement/removal. Results of the two-phase evaluation of the three concepts and design issues for further development of them are discussed.

Early Applications of Viscosifying Friction Reducers for Hydraulic Fracturing Operations in the Vaca Muerta Formation, Argentina

Early hydraulic fracturing completions in the Vaca Muerta Formation in central Argentina have incorporated the use of conventional fluid systems, such as linear and crosslinked guar-based polymers. Within the past few years, however, the benefits of viscosifying friction reducers (VFR) have been demonstrated in the industry, predominantly within the United States. The objective of this project was to trial the VFR fluid technology in fracturing operations in this area for potential use for full field development. After studying the potential advantages of the VFR technology including cost savings, simplified operations and enhanced well production, a project was initiated to determine if those same benefits could be obtained. To accomplish this, studies were performed to ensure economic and technical justification through a stepwise process of laboratory testing, logistical and operational considerations, a single well field trial, and a five well development phase evaluation project. The pilot project was performed on a horizontal, 27 stage lateral in the Aguada Pichana Oeste field in the Neuquen Basin of Argentina. The five well development phase evaluation project was performed in the Lindero Atravesado field. Positive laboratory test results led to a field trial using this technology, during which several benefits of the VFR fluid system began to emerge. Operational efficiency was an early success, including a reduction in the quantity of chemicals on location, more simplified pumping schedules, and low pumping pressures. Secondly, significant cost savings were realized compared to previous fluid system packages. Finally, positive production results were observed, leading to the decision to incorporate this technology into full field development operations. This paper will review the results of the stepwise evaluation process along with a focus on the economic benefits and well production from the development phase evaluation project. This paper describes the transition by Pan American Energy (PAE) from conventional fracturing fluids to viscosifying friction reducer (VFR) technology in the Vaca Muerta Formation. The paper highlights the performance of a relatively new treatment fluid which delivered positive results in a strategic international asset. The project has led to full field development using this technology. The same efficiencies provided by this system can potentially be realized through applications in other basins.