Pub Date : 2021-03-16DOI: 10.26480/gwk.01.2021.22.25
T. Hussain, A. Nasir, Ch. Arslan, Rizwan Haider
This study focuses on the reduction of COD, BOD, TDS, TSS, cadmium, lead, arsenic, chloride, and sulphate in textile industries. Microbial presence in the wastewater can treat effectively by providing a favorable environment. Solids Retention Time (SRT) is a key functioning element that affects the AS process efficacy. The efficiency of pH, BOD, COD, TDS, TSS, cadmium, lead, arsenic, chloride, and sulphate is taken into measure. Engineering-oriented approach was adopted to treat the aforesaid parameters through the inoculation of microbes in the biological treatment process. The designed Effluent treatment plant was based on screening, equalization, neutralization, aeration/ biological reactor and biological sedimentation. Treatment proves to be more efficient by the addition of cationic and anionic polymer i.e. Coagulant and flocculant. Overall, the efficiency of the designed treatment is taken into COD, BOD, TDS, TSS, cadmium, lead, arsenic, chloride, and sulphate 86.6%, 88.59%, 63.86%, 89.25%, 94.12%, 98.36%, 50%, 33% and 41% respectively. Statistical analysis has been performed that shows Correlation is high with BOD, TDS, TSS, Cd, lead, and As except chloride. in aforesaid parameter if concentration is decreased it means COD concentration will also decreased and has directly proportional relation with each other. As a result of the designed effluent treatment plant, treated effluent is discharged that has no significant negative impacts on the environment.
{"title":"DESIGNING AND EVALUATION OF BIOLOGICAL TREATMENT PLANT FOR TEXTILE INDUSTRIAL EFFLUENT","authors":"T. Hussain, A. Nasir, Ch. Arslan, Rizwan Haider","doi":"10.26480/gwk.01.2021.22.25","DOIUrl":"https://doi.org/10.26480/gwk.01.2021.22.25","url":null,"abstract":"This study focuses on the reduction of COD, BOD, TDS, TSS, cadmium, lead, arsenic, chloride, and sulphate in textile industries. Microbial presence in the wastewater can treat effectively by providing a favorable environment. Solids Retention Time (SRT) is a key functioning element that affects the AS process efficacy. The efficiency of pH, BOD, COD, TDS, TSS, cadmium, lead, arsenic, chloride, and sulphate is taken into measure. Engineering-oriented approach was adopted to treat the aforesaid parameters through the inoculation of microbes in the biological treatment process. The designed Effluent treatment plant was based on screening, equalization, neutralization, aeration/ biological reactor and biological sedimentation. Treatment proves to be more efficient by the addition of cationic and anionic polymer i.e. Coagulant and flocculant. Overall, the efficiency of the designed treatment is taken into COD, BOD, TDS, TSS, cadmium, lead, arsenic, chloride, and sulphate 86.6%, 88.59%, 63.86%, 89.25%, 94.12%, 98.36%, 50%, 33% and 41% respectively. Statistical analysis has been performed that shows Correlation is high with BOD, TDS, TSS, Cd, lead, and As except chloride. in aforesaid parameter if concentration is decreased it means COD concentration will also decreased and has directly proportional relation with each other. As a result of the designed effluent treatment plant, treated effluent is discharged that has no significant negative impacts on the environment.","PeriodicalId":32518,"journal":{"name":"Engineering Heritage Journal","volume":"123 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83445763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-16DOI: 10.26480/gwk.01.2021.34.41
Jietang Lu, Chao‐nan Liu, M. Buxton
The consensus of using the compact city as a model for urban sustainable development has inevitably led to governments restricting outer urban expansion as an urban management tool. Urban growth boundaries (UGBs) have become one of the most widely used policy tools to achieve this goal. To evaluate the impact of UGBs on urban sustainable development in Melbourne, Australia, we compare the temporal and spatial changes of population, dwelling density, and growth before and after the implementation of the UGB policy in the Melbourne metropolitan area. The results indicate that, since the implementation of the UGB policy, the urban population, dwelling density, and growth have significantly accelerated; however, nearly half of the new population is located on the urban fringe. Based on the pressure of population growth, the UGB in Melbourne has been adjusted frequently, which has reduced its binding force on urban growth. Herein, we focus on the reasons for amendments to the Melbourne UGB, namely, urban density and the intensity of urban land use and compare the UGB policies of the Melbourne and Portland, Oregon (USA), metropolitan areas. We argue that the state government should restrict urban growth boundaries and increase urban density. At the same time, UGB policy must be coordinated with broader government policy, such as urban land use, urban transportation, and environmental planning, and a mechanism should be established to release land supply in defined areas. In addition, governments should expand public participation in the UGB amendment process and in supporting the implementation of the UGB policy
{"title":"THE IMPACT OF URBAN GROWTH BOUNDARIES IN MELBOURNE ON URBAN SUSTAINABLE DEVELOPMENT","authors":"Jietang Lu, Chao‐nan Liu, M. Buxton","doi":"10.26480/gwk.01.2021.34.41","DOIUrl":"https://doi.org/10.26480/gwk.01.2021.34.41","url":null,"abstract":"The consensus of using the compact city as a model for urban sustainable development has inevitably led to governments restricting outer urban expansion as an urban management tool. Urban growth boundaries (UGBs) have become one of the most widely used policy tools to achieve this goal. To evaluate the impact of UGBs on urban sustainable development in Melbourne, Australia, we compare the temporal and spatial changes of population, dwelling density, and growth before and after the implementation of the UGB policy in the Melbourne metropolitan area. The results indicate that, since the implementation of the UGB policy, the urban population, dwelling density, and growth have significantly accelerated; however, nearly half of the new population is located on the urban fringe. Based on the pressure of population growth, the UGB in Melbourne has been adjusted frequently, which has reduced its binding force on urban growth. Herein, we focus on the reasons for amendments to the Melbourne UGB, namely, urban density and the intensity of urban land use and compare the UGB policies of the Melbourne and Portland, Oregon (USA), metropolitan areas. We argue that the state government should restrict urban growth boundaries and increase urban density. At the same time, UGB policy must be coordinated with broader government policy, such as urban land use, urban transportation, and environmental planning, and a mechanism should be established to release land supply in defined areas. In addition, governments should expand public participation in the UGB amendment process and in supporting the implementation of the UGB policy","PeriodicalId":32518,"journal":{"name":"Engineering Heritage Journal","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90050789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-16DOI: 10.26480/gwk.01.2021.26.33
Retna Kristiana, M. Kholil, Shella Mikha
The implementation of the Breeze Tower Apartment Project, South Tangerang, lndonesia, especially for Architecture work that was delayed due to the owner’s shop drawing investigation was not compliance with the plan, only 77 percent of the total work was completed. Based on that, this research needs to be done to determine alternatives to improve the project time performance by analyzing the causes of the project delay so that losses caused by delays can be minimized. To find out the alternative solutions to improve project time performance towards the most dominant caused of delay where the research was conducted at the Breeze Tower Apartment Project, South Tangerang, lndonesia. Modeling for this research using the software SEM SMARTPLS 3.0. version. Based on the analysis of structural models or path analysis in SEM Smart PLS, it was found that the most dominant cause of delay was the value of the path coefficients between the independent variables and the dependent variable with a value of 0.548, namely design and documents. Based on the results of expert validation, alternative solutions in increasing project time performance against the most dominant caused of delay are designs mat should go through a number of discussion processes to finalize the design, and the design planner must have a comparable design publishing target and in accordance with the target of carrying out the work by proposing the changes to the new design that most relevant to the field conditions, and includes analysis on each alternative design change. This research is limited to reviewing the causes of project delays, especially in architecture work that affects the time performance of the Breeze Tower Apartment Project, South Tangerang, lndonesia. The substance of the study describes 4 factors including material, equipment, environment, human resources to review the most dominant causes of project delays. Quantitative analysis in this study uses SEM Smart PLS tools where the studies raised will focus on architecture work to obtain the alternative solutions to improve the project time performance towards the most dominant causes of delay where this research is carried out on the Breeze Tower Apartment Project, South Tangerang Indonesia.
{"title":"THE APPLICATION OF STRUCTURAL EQUATION MODEL TO IMPROVE THE PERFORMANCE OF TIME IN CONSTRUCTION PROJECT","authors":"Retna Kristiana, M. Kholil, Shella Mikha","doi":"10.26480/gwk.01.2021.26.33","DOIUrl":"https://doi.org/10.26480/gwk.01.2021.26.33","url":null,"abstract":"The implementation of the Breeze Tower Apartment Project, South Tangerang, lndonesia, especially for Architecture work that was delayed due to the owner’s shop drawing investigation was not compliance with the plan, only 77 percent of the total work was completed. Based on that, this research needs to be done to determine alternatives to improve the project time performance by analyzing the causes of the project delay so that losses caused by delays can be minimized. To find out the alternative solutions to improve project time performance towards the most dominant caused of delay where the research was conducted at the Breeze Tower Apartment Project, South Tangerang, lndonesia. Modeling for this research using the software SEM SMARTPLS 3.0. version. Based on the analysis of structural models or path analysis in SEM Smart PLS, it was found that the most dominant cause of delay was the value of the path coefficients between the independent variables and the dependent variable with a value of 0.548, namely design and documents. Based on the results of expert validation, alternative solutions in increasing project time performance against the most dominant caused of delay are designs mat should go through a number of discussion processes to finalize the design, and the design planner must have a comparable design publishing target and in accordance with the target of carrying out the work by proposing the changes to the new design that most relevant to the field conditions, and includes analysis on each alternative design change. This research is limited to reviewing the causes of project delays, especially in architecture work that affects the time performance of the Breeze Tower Apartment Project, South Tangerang, lndonesia. The substance of the study describes 4 factors including material, equipment, environment, human resources to review the most dominant causes of project delays. Quantitative analysis in this study uses SEM Smart PLS tools where the studies raised will focus on architecture work to obtain the alternative solutions to improve the project time performance towards the most dominant causes of delay where this research is carried out on the Breeze Tower Apartment Project, South Tangerang Indonesia.","PeriodicalId":32518,"journal":{"name":"Engineering Heritage Journal","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76621047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-03-16DOI: 10.26480/gwk.01.2021.01.11
Gbeminiyi John Oyewole, O. Adetunji
In this paper, we propose a Hybrid Algorithm (HA) to solve the Fixed Charge Solid Location and Transportation problem (FCSLTP). The FCSLTP considers the cost of facility location and route fixed costs during transportation planning or load consolidation. The HA integrates two heuristics into the Genetic Algorithm framework to solve the FCSLTP. Genetic operations are used to select the best combination of facility locations while a greedy heuristic which uses some cost relaxations are used for the initial load allocation. An improvement heuristic, a modified stepping stone method, is then used to consolidate load allocations to realize further possible cost savings. Parameters used for the genetic operations were decided through preliminary studies. Computational studies using randomly generated data were performed to compare the HA solutions with the solutions obtained using CPLEX, a commercial solver. Performance comparison was done based on the quality of solution and computing time. The results suggest the solution approach is competitive.
{"title":"A HYBRID ALGORITHM TO SOLVE THE FIXED CHARGE SOLID LOCATION AND TRANSPORTATION PROBLEM","authors":"Gbeminiyi John Oyewole, O. Adetunji","doi":"10.26480/gwk.01.2021.01.11","DOIUrl":"https://doi.org/10.26480/gwk.01.2021.01.11","url":null,"abstract":"In this paper, we propose a Hybrid Algorithm (HA) to solve the Fixed Charge Solid Location and Transportation problem (FCSLTP). The FCSLTP considers the cost of facility location and route fixed costs during transportation planning or load consolidation. The HA integrates two heuristics into the Genetic Algorithm framework to solve the FCSLTP. Genetic operations are used to select the best combination of facility locations while a greedy heuristic which uses some cost relaxations are used for the initial load allocation. An improvement heuristic, a modified stepping stone method, is then used to consolidate load allocations to realize further possible cost savings. Parameters used for the genetic operations were decided through preliminary studies. Computational studies using randomly generated data were performed to compare the HA solutions with the solutions obtained using CPLEX, a commercial solver. Performance comparison was done based on the quality of solution and computing time. The results suggest the solution approach is competitive.","PeriodicalId":32518,"journal":{"name":"Engineering Heritage Journal","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88862693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-30DOI: 10.26480/gwk.02.2020.46.48
Nik Fakhri Nek Daud, Ruzlaini Ghoni
In order to minimize the requirement of external power source and maintenance for electric devices such as wireless sensor networks, the energy harvesting technique based on vibrations has been a dynamic field of studying interest over past years. Researchers have concentrated on developing efficient energy harvesters by adopting new materials and optimizing the harvesting devices. One important limitation of existing energy harvesting techniques is that the power output performance is seriously subject to the resonant frequencies of ambient vibrations, which are often random and broadband. This paper reviews important vibration-to-electricity conversion mechanisms, including theory, modelling methods and the realizations of the piezoelectric, electromagnetic and electrostatic approaches. Different types of energy harvesters that have been designed with nonlinear characteristics are also reviewed. As one of important factors to estimate the power output performance, the energy conversion efficiency of different conversion mechanisms is also summarized. Finally, the challenging issues based on the existing methods and future requirement of energy harvesting are also discussed.
{"title":"VIBRATION ENERGY HARVESTING TECHNIQUE: A COMPREHENSIVE REVIEW","authors":"Nik Fakhri Nek Daud, Ruzlaini Ghoni","doi":"10.26480/gwk.02.2020.46.48","DOIUrl":"https://doi.org/10.26480/gwk.02.2020.46.48","url":null,"abstract":"In order to minimize the requirement of external power source and maintenance for electric devices such as wireless sensor networks, the energy harvesting technique based on vibrations has been a dynamic field of studying interest over past years. Researchers have concentrated on developing efficient energy harvesters by adopting new materials and optimizing the harvesting devices. One important limitation of existing energy harvesting techniques is that the power output performance is seriously subject to the resonant frequencies of ambient vibrations, which are often random and broadband. This paper reviews important vibration-to-electricity conversion mechanisms, including theory, modelling methods and the realizations of the piezoelectric, electromagnetic and electrostatic approaches. Different types of energy harvesters that have been designed with nonlinear characteristics are also reviewed. As one of important factors to estimate the power output performance, the energy conversion efficiency of different conversion mechanisms is also summarized. Finally, the challenging issues based on the existing methods and future requirement of energy harvesting are also discussed.","PeriodicalId":32518,"journal":{"name":"Engineering Heritage Journal","volume":"360 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74914098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-09-30DOI: 10.26480/gwk.02.2020.39.43
Muhammad Aurangzaib, Shahbaz Khan, Muneeb Ahmad, M. Touseef, A. Nasir
Road development projects are important as they provide economical, political and social benefits but delays can occur. EIA is conducted for every project as required by the Environmental Protection Act of 1997 and the Environmental Policy of Pakistan for the purpose of ensuring mitigation of environmental impacts due to project activities. The Kashmir Underpass project in Faisalabad is assigned to FDA, for the purpose of satisfying growing need of traffic load due to population increase in surrounding areas in newly developed societies. This research examines the different factors of project affecting the environment. Questionnaire approach was utilized to gain insights of environmental impacts due to the project. Results showed that 93% of respondents didn’t knew about EIA and why it is necessary. Respondents were facing impacts from dust particles, noise, traffic, business loss etc. These impacts were analyzed and guidelines were developed for EIA of Kashmir Underpass Project.
{"title":"DEVELOPING GUIDELINES FOR ENVIRONMENTAL IMPACT ASSESSMENT OF KASHMIR UNDERPASS PROJECT IN FAISALABAD","authors":"Muhammad Aurangzaib, Shahbaz Khan, Muneeb Ahmad, M. Touseef, A. Nasir","doi":"10.26480/gwk.02.2020.39.43","DOIUrl":"https://doi.org/10.26480/gwk.02.2020.39.43","url":null,"abstract":"Road development projects are important as they provide economical, political and social benefits but delays can occur. EIA is conducted for every project as required by the Environmental Protection Act of 1997 and the Environmental Policy of Pakistan for the purpose of ensuring mitigation of environmental impacts due to project activities. The Kashmir Underpass project in Faisalabad is assigned to FDA, for the purpose of satisfying growing need of traffic load due to population increase in surrounding areas in newly developed societies. This research examines the different factors of project affecting the environment. Questionnaire approach was utilized to gain insights of environmental impacts due to the project. Results showed that 93% of respondents didn’t knew about EIA and why it is necessary. Respondents were facing impacts from dust particles, noise, traffic, business loss etc. These impacts were analyzed and guidelines were developed for EIA of Kashmir Underpass Project.","PeriodicalId":32518,"journal":{"name":"Engineering Heritage Journal","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72908088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-11DOI: 10.26480/gwk.01.2020.19.22
N. M.A
The roughness elements are efficient tools to control the features of the hydraulic jump in the rectangular stilling basins. The present study suggests the use of modified elements to control the features of the free jump. The proposed tool is an incomplete circular pile. The use of piles in a one row with the different setup has been investigated. The measurements showed that the case of piles with the comparative summation areas A/∆=6.72 and the comparative distances between piles X/H1 =0.0 reduced the comparative height and length of the free jump by 11% and 24.6%, respectively. The paper detected the necessary helpful statistical formulas for the phenomenon.
{"title":"IMPROVEMENT OF THE HYDRAULIC JUMP FEATURES USING INCOMPLETE CIRCULAR PILES","authors":"N. M.A","doi":"10.26480/gwk.01.2020.19.22","DOIUrl":"https://doi.org/10.26480/gwk.01.2020.19.22","url":null,"abstract":"The roughness elements are efficient tools to control the features of the hydraulic jump in the rectangular stilling basins. The present study suggests the use of modified elements to control the features of the free jump. The proposed tool is an incomplete circular pile. The use of piles in a one row with the different setup has been investigated. The measurements showed that the case of piles with the comparative summation areas A/∆=6.72 and the comparative distances between piles X/H1 =0.0 reduced the comparative height and length of the free jump by 11% and 24.6%, respectively. The paper detected the necessary helpful statistical formulas for the phenomenon.","PeriodicalId":32518,"journal":{"name":"Engineering Heritage Journal","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89331897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-06-09DOI: 10.26480/gwk.01.2020.15.18
O. Eyankware, Idaereesoari Harriet Ateke, Okonta Nnamdi Joseph
Well DEF, a well located in Niger Delta region of Nigeria was shut down for 7 years. On gearing towards re-starting production, different options such as installation of gas lift mechanism, servicing and installation of packers and valves were evaluated for possibility of increasing well fluid productivity. Hence, this research was focused on optimizing well fluid productivity using PROSPER through installation of continuous gas lift mechanism on an existing well using incomplete dataset; in addition, the work evaluated effect of gas injection rates, wellhead pressure, water cut and gas gravity on efficiency of the artificial lift mechanism for improved well fluid production. Results of the study showed that optimum gas injection rate of 0.6122 MMscf/day produced well fluid production of 264.28 STB/day which is lower than pristine production rate (266 STB/day) of the well. Also, increment in wellhead pressure resulted in decrease in well production, increase in water cut facilitated reduction in well fluid productivity while gas gravity is inversely proportional to well fluid productivity. Based on results obtained, authors concluded that Well DEF does not require gaslift mechanism hence, valves and parkers need to be re-serviced and re-installed for sustained well fluid.
{"title":"GAS LIFT OPTIMIZATION OF A MATURE WELL IN NIGER DELTA, NIGERIA USING INCOMPLETE DATASET: A CASE STUDY","authors":"O. Eyankware, Idaereesoari Harriet Ateke, Okonta Nnamdi Joseph","doi":"10.26480/gwk.01.2020.15.18","DOIUrl":"https://doi.org/10.26480/gwk.01.2020.15.18","url":null,"abstract":"Well DEF, a well located in Niger Delta region of Nigeria was shut down for 7 years. On gearing towards re-starting production, different options such as installation of gas lift mechanism, servicing and installation of packers and valves were evaluated for possibility of increasing well fluid productivity. Hence, this research was focused on optimizing well fluid productivity using PROSPER through installation of continuous gas lift mechanism on an existing well using incomplete dataset; in addition, the work evaluated effect of gas injection rates, wellhead pressure, water cut and gas gravity on efficiency of the artificial lift mechanism for improved well fluid production. Results of the study showed that optimum gas injection rate of 0.6122 MMscf/day produced well fluid production of 264.28 STB/day which is lower than pristine production rate (266 STB/day) of the well. Also, increment in wellhead pressure resulted in decrease in well production, increase in water cut facilitated reduction in well fluid productivity while gas gravity is inversely proportional to well fluid productivity. Based on results obtained, authors concluded that Well DEF does not require gaslift mechanism hence, valves and parkers need to be re-serviced and re-installed for sustained well fluid.","PeriodicalId":32518,"journal":{"name":"Engineering Heritage Journal","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87259478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-20DOI: 10.26480/gwk.02.2019.12.14
Liezal Slabber
Underactuated overhead cranes play an important role in engineering and construction, which also make nonlinear control strategies and planning on this basis become the current focus of academic research. Based on scholarly research findings, this paper carries out a theoretical study on nonlinear control strategies and planning for underactuated overhead cranes. To begin with, the underactuated system, underactuated overhead cranes and its nonlinear control are elucidated. Afterwards, the stabilization methods for front actuators are analyzed, and finally two nonlinear control methods are explored in the hope of providing some references for research in related fields
{"title":"NONLINEAR CONTROL STRATEGIES AND PLANNING FOR UNDERACTUATED OVERHEAD CRANES","authors":"Liezal Slabber","doi":"10.26480/gwk.02.2019.12.14","DOIUrl":"https://doi.org/10.26480/gwk.02.2019.12.14","url":null,"abstract":"Underactuated overhead cranes play an important role in engineering and construction, which also make nonlinear control strategies and planning on this basis become the current focus of academic research. Based on scholarly research findings, this paper carries out a theoretical study on nonlinear control strategies and planning for underactuated overhead cranes. To begin with, the underactuated system, underactuated overhead cranes and its nonlinear control are elucidated. Afterwards, the stabilization methods for front actuators are analyzed, and finally two nonlinear control methods are explored in the hope of providing some references for research in related fields","PeriodicalId":32518,"journal":{"name":"Engineering Heritage Journal","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83484836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-31DOI: 10.26480/GWK.02.2019.09.11
M. Hanafiah, K. M. Jansar
{"title":"MySTREAM: EMPOWERING 21ST CENTURY SKILLS THROUGH TRANSDISCIPLINARY AND SUSTAINABILITY TECHNIQUES","authors":"M. Hanafiah, K. M. Jansar","doi":"10.26480/GWK.02.2019.09.11","DOIUrl":"https://doi.org/10.26480/GWK.02.2019.09.11","url":null,"abstract":"","PeriodicalId":32518,"journal":{"name":"Engineering Heritage Journal","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75160841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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