Technical Interest Research Articles

Effect of Bentonite and Polymer Drilling Fluids on Skin Friction of Bored Piles

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

Effect of Training Platform on Interest and Academic Performance in Technical Education among Technical College Students in Ondo-State, Nigeria

Training platform is closely associated to e-learning. Training platforms are primarily focused on the delivery of online learning. It serves as a platform for a variety of uses, including asynchronous and synchronous methods of teaching and learning. This study investigated the effect of training platform instruction on students’ interest and academic performance in technical education among technical college students. The study was conducted in Ondo State and applied a quasi-experimental methodology. The study involved 284 participants, including 232 male and 52 female students from two technical colleges in Ondo State. For effective investigation, training technical education interest rating (TEIR) and technical education academic performance (TEAP) instrument were faces verified by 3 experts. To analyze the null hypotheses that served as the study guiding principles and to provide answers to the research questions, the collected data were analyzed using the mean and analysis of variance (ANOVA). The results showed that students’ interest and academic performance are enhanced when technical education is taught using a training platform method than the conventional instructional method. The study also finds a significant variation in the academic performance of the students who were taught technical education via the training platform instructional method. Based on these findings, the study concluded that the training platform instructional approach improves students' academic performance and interest more than the traditional approach in technical education. Also, male students had a stronger interest in technical education than female students who are taught technical education using the training platform instructional approach, and female students in technical institutions outperformed male students academically when utilizing the training platform. The study therefore recommended that technical colleges should take into consideration the use of training platform as an addition to the conventional instructional practices to enhance the quality of learning and teaching.

Microstructure and properties of WC–Co cemented carbide/40Cr steel joints brazed at low–temperature with Ag–Cu–In–Ti filler alloy

WC–Co cemented carbide/steel brazed at low–temperature is of significant scientific and technical interest. In this study, the interface microstructure between the filler alloy and WC–Co and 40Cr steel, the formation process of the joint microstructure, and the effect of brazing temperature on the microstructure and properties of joints were systematically studied. The filler alloy was bonded by forming a TiC reaction layer with WC–Co and 40Cr steel, which enhanced the retention of the filler layer on the joint. The microstructure of the joint was a WC–Co/TiC reaction layer/TiCo reaction layer/Cu2InTi + eutectic structure (Ag [s, s] + Ag–doped Cu7In3 + Cu4In) + Cu [s, s]/TiC reaction layer/40Cr steel. Moreover, the maximum average shear strength of the joint (brazed at 740 °C) reached 258 MPa, which is approximately 60% higher than those reported in the literature. The fracture behavior of the joint was mainly affected by the distribution of the Cu2InTi intermetallic compounds in the filler layer and the diffusion of Co from the cemented carbide.

Ultra-narrowband filter based on the metal-cladding resonant waveguide.

The simple and effective optical filter is the significantly scientific and technical interest in optical signal processing and communication. Especially, the development of microsystem integration is limited in traditional optical filters, due to the complicated structure, small choice, large cost, etc. In this paper, we report an ultra-narrowband filter based on a metal-cladding resonant waveguide. Therein, the ultra-narrowband resonant mode is achieved based on the resonance screening of incident light and cavity modes. According to the experimental data, the full width at half maximum (FWHM) can reach less than 0.1 nm. Furthermore, the resonant peak of FWMH is determined by the thickness of the waveguide, and the resonant wavelength can be selected by changing the incident angle.

Sports Video Classification Framework Using Enhanced Threshold Based Keyframe Selection Algorithm and Customized CNN on UCF101 and Sports1-M Dataset.

The computer vision community has taken a keen interest in recent developments in activity recognition and classification in sports videos. Advancements in sports have a broadened the technical interest of the computer vision community to perform various types of research. Images and videos are the most frequently used components in computer vision. There are numerous models and methods that can be used to classify videos. At the same time, there no specific framework or model for classifying and identifying sports videos. Hence, we proposed a framework based on deep learning to classify sports videos with their appropriate class label. The framework is to perform sports video classification using two different benchmark datasets, UCF101 and the Sports1-M dataset. The objective of the framework is to help sports players and trainers to identify specific sports from the large data source, then analyze and perform well in the future. This framework takes sports video as an input and produces the class label as an output. In between, the framework has numerous intermediary processes. Preprocessing is the first step in the proposed framework, which includes frame extraction and noise reduction. Keyframe selection is carried out by candidate frame extraction and an enhanced threshold-based frame difference algorithm, which is the second step. The final step of the sports video classification framework is feature extraction and classification using CNN. The proposed framework result is compared with pretrained neural networks such as AlexNet and GoogleNet, and then the results are also compared. Three different evaluation metrics are used to measure the accuracy and performance of the framework.

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As we wrap up 2022, I’d like to take this opportunity to thank you for your feedback and continued commitment to the JPT editorial team as we research and write our online and monthly articles, all exclusive to JPT. Your presentations at SPE conferences, technical papers, interviews, and contributed articles are what make this content the best in the industry. A special thank you goes to our Editorial Review Board. Here’s a sampling of JPT’s most-viewed features in 2022. - Think You Know Where Proppant Goes During Fracturing? Based on Recent Testing: Don’t Bet on It - Drillers vs. Granite: Hard Rock Is Losing Its Edge - CO2 Capture and Storage Requires Challenging Engineering in Unfamiliar Spaces - The Trend in Drilling Horizontal Wells Is Longer, Faster, Cheaper - Petroleum Engineering Continues To Drop, But There Is Talk of Better Times Ahead - What You Should Know About Offshore and Sour Gas CCS: High Cost, Leak Mitigation, and Transportation - Talos Eyes Big Carbon Capture Role in the US and Beyond - A Few Lessons From Tight-Rock Producers That Have Made Big Investments in Fracture Diagnostics - Water-Plus-Gas Injection on a Bakken Well Pad May Solve Problems That Stymied Shale EOR - The Fracturing Plan: Hit a Well 300 ft Away— How Hard Could That Be? - An Invention Promising Less Carbon and Cost Could Allow More Stranded-Gas Development - Is It Twilight for Deepwater US Gulf Megaprojects? - Big Fracs That Add More Oil May Also Mean More Water, and That Can Be All Right - The Produced Water Conundrum Grows Across Unconventionals As an SPE member, you gain access to the monthly edition of JPT on the 1st of each month (and archived issues at any time) by using your login and password. Each issue includes synopses of 12 OnePetro papers recently presented at conferences. You may download for free the SPE papers synopsized in that issue for 2 months. Be sure to take a look at each issue to spot papers of interest and download them. Beginning with the January issue, we’ll include a list of the SPE papers available for free download from JPT, including the previous and current issues, plus a preview of the technical topics to be highlighted in the next issue. These downloads from JPT are in addition to the 10 free downloads annually from OnePetro that are included in your membership benefits. You can also visit the HSE&S discipline page to access a free download of a new featured HSE paper biweekly. To expand the delivery of content and provide added opportunities for networking and exchange of expertise and knowledge among members with similar technical interests, SPE launched four new technical sections in 2022: the Data Science & Engineering Analytics Technical Section, Hydrogen Technical Section, Management Technical Section, and Methane Emissions Management Technical Section. Check out the full scope of technical sections here. The SPE Energy Stream was launched in January 2022. It’s your centralized source for live and on-demand video content about innovations, trends, and technical solutions. New content is frequently added. You’ll find a menu on the homepage that sorts content by upcoming live, trending, topic, product, Distinguished Lecturers, and SPE Event Highlights so you can go directly to what interests you. Sign up for the weekly SPE Energy Stream newsletter to catch the latest offerings. The JPT LinkedIn page, launched in September 2021, now has more than 6,100 followers. You’ll find content from JPT, OGF, HSE Now, DSDE, and TWA posted there. We wish you a happy holiday with time spent with your families and friends. Enjoy.

Seeking policy solutions in a complex system: experimentalist governance in China's healthcare reform.

The proliferation of "wicked" policy problems in complex systems requires an experimental approach of problem-solving. Experimentalist governance offers a conducive framework through which to seek policy solutions amidst high levels of complexity in a multilevel governance structure. This study conceptualizes four distinctive experimental modalities based on varying levels of technical complexity and interest complexity, both of which represent salient constraints for policy reforms in a complex system, the health sector in particular. Trail-blazing pilots, crowdsourcing pilots, managed pilots, and road-testing pilots are all associated with distinct mechanisms of experimentation in a multilevel governance structure. Through four illustrative cases from China's massive experimental program of public hospital reform, this study demonstrates how experimentalist governance seeks policy solutions in the health sector. Should governance arrangements, policy capacity, pragmatism, and informational devices become aligned in a conducive way, experimentalist governance can play an instrumental role in seeking solutions for difficult problems in a complex policy system. A governance structure capable of policy learning and adaptive management is the key.

From crack-prone to crack-free: Unravelling the roles of LaB6 in a β-solidifying TiAl alloy fabricated with laser additive manufacturing

The 4th generation of intermetallic γ-TiAl based alloy, the so-called β-solidifying TiAl, has attracted great attentions due to its promising high-temperature properties. But it is intrinsically brittle and crack-prone, which lowers the processability of laser additive manufacturing (LAM) that offers an effective pathway for material processing and design. Thus, improving the mechanical properties, particularly the room temperature plasticity, of LAMed β-solidifying TiAl alloy is of technical interest and theoretical importance. Based on previous results, the present work investigates the synergistic roles of La and B in grain refinement and crack elimination in a LAMed β-solidifying TiAl alloy with LaB6 addition (0–2 wt%). Results show that La2O3 and TiB in-situ formed via reaction between the β-solidifying TiAl and the added LaB6 nanoparticles. Microstructural feature, phase transformation texture and mechanical properties at both room and high temperatures can be optimized through controlling the LaB6 addition level. 0.5 wt% LaB6 has been determined as the optimized addition, at which the balanced mechanical properties at both room temperature and 800 °C can be achieved for the LAMed β-solidifying TiAl alloy. Excessive LaB6 addition led to agglomeration of in-situ formed precipitates, reducing density and therefore deteriorating mechanical properties. The study offers an in-depth understanding of the effective grain refining approach to overcome the intrinsic brittle nature of β-solidifying TiAl through optimized doping of LaB6.

Flood Inundation Modelling in Greater Colombo Region Using HEC-RAS 2D

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

The Workplace Support Received by Young Women Engineers in Sri Lanka

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

Compressibility Characteristics of Open Dumped Municipal Solid Waste in the Dry Zone of Sri Lanka

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

From the Editor…

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

Strength Development and Lateral Load Resisting Properties of Expanded Polystyrene Based Lightweight Concrete Panels

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

Effect of Ordinary Portland Cement (OPC) and Blended Hydraulic Cement (BHC) on the Behaviour of Self-Compacting Concrete

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

Hydrological Modelling for Reservoir Operation: Application of SWAT Model for Kalu Ganga Catchment, Sri Lanka

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

Organisational Factors Affecting the Productivity of Labour in Sri Lankan Building Construction Projects: Perspective of Engineers

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

Prediction of Drag Force Coefficient for Single- Column-Supported Billboard Structures

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

Criteria for Setting Speed Limits to Sri Lankan Highways (Built - Up Areas)

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

Application of SWMM for Water Resources Management by Continuous Rainfall-Runoff Modelling in the Rural Watershed of Kalu River Basin of Sri Lanka

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.

Modeling for Tank Cascade System Planning and Management: Case Study of Mamunugama Tank Cascade System, Kurunegala District

"ENGINEER", established in 1973 by The Institution of Engineers, is a Journal for dissemination of Engineering knowledge, published quarterly.If you are interested in contributing an Original Technical Paper based on research by the author(s) (intended for Section I) or an Original Article of Professional or Technical interest related to Engineering. (Section II) to this journal please go through the publication checklist which can be downloaded from here.Cover DescriptionCover images show a few views of the Maduru Oya reservoir and construction of right bank canal. The Institution of Engineers, Sri Lanka, acknowledges Eng. L.D. Amila Sanjeewa of the Department of Irrigation for providing images and related information of the project.