UHB of Flexible Flowlines: Design and Analysis

2017 ◽  
Author(s):  
M. Liu ◽  
C. Cross
Keyword(s):  
Analysis Procedure ◽  
Design Parameters ◽  
Data Preparation ◽  
Design Data ◽  
Nonlinear Properties ◽  
Upheaval Buckling ◽  
Alternative Approach ◽  
Tangible Benefit ◽  
Resistance Performance

The predictive upheaval buckling (UHB) for un-bonded flexibles can be challenging due to their complex multilayer structure and nonlinear properties. A combination of design data preparation and interpretation, in-place analysis methodologies, and installation can result in a varied UHB screening exercise and results. For flexible flowlines prone to UHB, pre-pressurisation is widely used prior to trenching and backfill to improve their UHB performance. This paper is intended to present a study on the issues associated with the flexible UHB assessment. The solidity and veracity of the current UHB screening and analysis procedure is examined for pre-pressurised flexibles in particular. The initial effective tension induced by pre-pressurisation prior to backfill is investigated in detail. Pitfalls and inconsistencies in the methodologies are reviewed. It is demonstrated that due to the neglect of nonlinearity, potential misuse of design parameters and assumptions made for the UHB design screening and analysis procedure can be compromised and open to rationalisation. The tangible benefit of initial pressurisation may be inaccurately evaluated for UHB mitigation. It is established that for the same flexible flowline, its UHB resistance performance can be either overpredicted or underestimated in certain conditions. An alternative approach is developed and proposed to redress some deficiencies. A case study is presented to show the key results and conclusions.

Management of Records in Adapted Buildings as Records Centres in Zimbabwe

Mousaion ◽  
2018 ◽  
Vol 35 (3) ◽  
Author(s):  
Samson Mutsagondo ◽  
Getrude Maduyu ◽  
Godfrey Tsvuura
Keyword(s):  
Qualitative Research ◽  
Case Study Research ◽  
Research Approach ◽  
Records Management ◽  
Personal Observation ◽  
Structured Interviews ◽  
Design Data ◽  
Professional Management ◽  
The Government

This paper discusses the challenges of records management that arise from the use of adapted buildings as records centres in Zimbabwe, despite the advantages of using such buildings. A qualitative research approach was used as well as a case study research design. Data were collected from seven officers of the Gweru Records Centre through semi-structured interviews. Personal observation was used to triangulate findings from interviews. It was found that the use of adapted buildings as records centres was a cheaper and quicker way of establishing records centres throughout the country. However, a number of preservation, security and management challenges cropped up as the conditions of the buildings and the environment of the adapted buildings were not conducive to the proper and professional management of records. This study is important in that it explores the prospects and challenges of using adapted buildings as records centres in Zimbabwe, an area that has not been researched by many authors. This provokes archival authorities and the government to seriously consider establishing purpose-built records and archival centres.

scholarly journals Application of Levine’s Model in Nursing Care of Patient with Diabetic Foot: A Case Study

2020 ◽  
Vol 4 (1) ◽  
pp. 6
Author(s):  
Ida Ayu Agung Laksmi ◽  
Heri Kristianto ◽  
Tony Suharsono
Keyword(s):  
Nursing Care ◽  
Diabetic Foot ◽  
Single Case ◽  
Hemodynamic Instability ◽  
Design Data ◽  
Tissue Integrity ◽  
Damage Tissue ◽  
Conservation Problem ◽  
Conservation Model

Diabetic foot is such a life threatening condition for people with Diabetes Mellitus which it can be result in hemodynamic instability and loss of consciousness. In order to improve quality of nursing care in patient with diabetic foot, nurses should apply a nursing model approach. Levine conservation theoretical model is one of comprehensive model theory that can be applied in patients with critical diabetic foot in Emergency Department (ED). This case study describes a nursing care using Levine's Conservation Model to care for a patient with diabetic foot.  This study was a case study with a single case design. Data were collected using physical assessment, written communications with the patient, interviews patient family members, and observing the patient during intensive care in the ED of Lawang General Hospital on December 21th, 2015. Levine's Conservation Model used as the nursing guideline successfully identified patient issues including ineffective breathing pattern as a major priority of energy conservation problem and damage tissue integrity as a problem of structural conservation. Both of conservation problem were caused by patient's personal integrity conservation maladaptive that caused by ineffective therapeutic regimen management. Levine’s conservation model is useful to investigate nursing problem and applicable to solve the emergency condition of damage tissue integrity in patients with diabetic foot. Index Terms— diabetic foot, nursing care, levine’s conservation model.

A Systematic Function Recommendation Process for Data-Driven Product and Service Design

2017 ◽  
Vol 139 (11) ◽  
Author(s):  
Zhinan Zhang ◽  
Ling Liu ◽  
Wei Wei ◽  
Fei Tao ◽  
Tianmeng Li ◽  
...  
Keyword(s):  
Subjective Experience ◽  
Vital Role ◽  
Data Driven ◽  
Design Parameters ◽  
Sound Design ◽  
New Paradigm ◽  
Senior Managers ◽  
Product Service ◽  
Target User

This paper presents a systematic function recommendation process (FRP) to recommend new functions to an existing product and service. Function plays a vital role in mapping user needs to design parameters (DPs) under constraints. It is imperative for manufacturers to continuously equip an existing product/service with exciting new functions. Traditionally, functions are mostly formulated by experienced designers and senior managers based on their subjective experience, knowledge, creativity, and even heuristics. Nevertheless, against the sweeping trend of information explosion, it is increasingly inefficient and unproductive for designers to manually formulate functions. In e-commerce, recommendation systems (RS) are ubiquitously used to recommend new products to users. In this study, the practically viable recommendation approaches are integrated with the theoretically sound design methodologies to serve a new paradigm of recommending new functions to an existing product/service. The aim is to address the problem of how to estimate an unknown rating that a target user would give to a candidate function that is not carried by the target product/service yet. A systematic function → product recommendation process is prescribed, followed by a detailed case study. It is indicated that practically meaningful functional recommendations (FRs) can indeed by generated through the proposed FRP.

Preliminary Benefits of Big Data in the Construction Industry: A Case Study

2022 ◽  
pp. 1-11
Author(s):  
Bernard Tuffour Atuahene ◽  
Sittimont Kanjanabootra ◽  
Thayaparan Gajendran
Keyword(s):  
Big Data ◽  
Construction Industry ◽  
Construction Projects ◽  
Big Data Applications ◽  
Data Application ◽  
Construction Firm ◽  
Big Data Application ◽  
Tangible Benefit ◽  
Design Construction

Big data applications consist of i) data collection using big data sources, ii) storing and processing the data, and iii) analysing data to gain insights for creating organisational benefit. The influx of digital technologies and digitization in the construction process includes big data as one newly emerging digital technology adopted in the construction industry. Big data application is in a nascent stage in construction, and there is a need to understand the tangible benefit(s) that big data can offer the construction industry. This study explores the benefits of big data in the construction industry. Using a qualitative case study design, construction professionals in an Australian Construction firm were interviewed. The research highlights that the benefits of big data include reduction of litigation amongst projects stakeholders, enablement of near to real-time communication, and facilitation of effective subcontractor selection. By implication, on a broader scale, these benefits can improve contract management, procurement, and management of construction projects. This study contributes to an ongoing discourse on big data application, and more generally, digitization in the construction industry.

TRANSFORMATIONAL LEADERSHIP IN IMPROVING LECTURER PERFORMANCE AT MUHAMMADIYAH HIGHER

2021 ◽  
Vol 1 (3) ◽  
pp. 171-178
Author(s):  
Saipul Wakit ◽  
Indah Yuliana ◽  
Indah Yuliana
Keyword(s):  
Transformational Leadership ◽  
Leadership Style ◽  
Transformative Leadership ◽  
Intellectual Stimulation ◽  
Design Data ◽  
Technical Ability ◽  
Individual Consideration ◽  
And Performance ◽  
Transformational Leadership Style

The transformational leadership style in higher education has four indicators carried out by the rector. These indicators include exemplary attitudes, inspiring motivation, intellectual stimulation and the rector's consideration for lecturers. Practically, the purpose of this article is to find out how the rector provides examples, inspires motivation and individual considerations in improving the performance of lecturers at Muhammadiyah universities. The operational research method uses a qualitative approach with a phenomenological case study design. Data collection activities were carried out by means of observation, interviews with informants, and extracting information from documents. To ensure the validity of the research data, several methods are used, namely credibility, transferability, dependability and confirmability. The results of the study explain that transformative leadership in Muhammadiyah universities objectively has provided an example with several things that are applied in attitudes, ideas, behavior and performance. While motivation is carried out by the Chancellor of the lecturers in several ways, namely through behavior, technical ability, supervision and policy. In stimulating the intellectuals of lecturers in several ways, namely to think modern and relevant, think forward and continue to make changes as well as productive, innovative, creative in carrying out tasks and performance. In individual consideration, the Chancellor is more humane towards lecturers, both in the work environment and in the community.

A Practical Approach to Expedite a Pore to Process Simulation Model for a Rich Gas Condensate Reservoir – Case Study

2021 ◽  
Author(s):  
Mohamed Ibrahim Mohamed ◽  
Ahmed Mahmoud El-Menoufi ◽  
Eman Abed Ezz El-Regal ◽  
Ahmed Mohamed Ali ◽  
Khaled Mohamed Mansour ◽  
...  
Keyword(s):  
Simulation Model ◽  
Production Optimization ◽  
Operating Conditions ◽  
Gas Condensate ◽  
Western Desert ◽  
Design Parameters ◽  
Compositional Approach ◽  
Process Plant ◽  
Black Oil

Abstract Field development planning of gas condensate fields using numerical simulation has many aspects to consider that may lead to a significant impact on production optimization. An important aspect is to account for the effects of network constraints and process plant operating conditions through an integrated asset model. This model should honor proper representation of the fluid within the reservoir, through the wells and up to the network and facility. Obaiyed is one of the biggest onshore gas field in Egypt, it is a highly heterogeneous gas condensate field located in the western desert of Egypt with more than 100 wells. Three initial condensate gas ratios are existing based on early PVT samples and production testing. The initial CGRs as follows;160, 115 and 42 STB/MMSCF. With continuous pressure depletion, the produced hydrocarbon composition stream changes, causing a deviation between the design parameters and the operating parameters of the equipment within the process plant, resulting in a decrease in the recovery of liquid condensate. Therefore, the facility engineers demand a dynamic update of a detailed composition stream to optimize the system and achieve greater economic value. The best way to obtain this compositional stream is by using a fully compositional integrated asset model. Utilizing a fully compositional model in Obaiyed is challenging, computationally expensive, and impractical, especially during the history match of the reservoir numerical model. In this paper, a case study for Obaiyed field is presented in which we used an alternative integrated asset modeling approach comprising a modified black-oil (MBO) that results in significant timesaving in the full-field reservoir simulation model. We then used a proper de-lumping scheme to convert the modified black oil tables into as many components as required by the surface network and process plant facility. The results of proposed approach are compared with a fully compositional approach for validity check. The results clearly identified the system bottlenecks. The model can be used to propose the best tie-in location of future wells in addition to providing first-pass flow assurance indications throughout the field's life and under different network configurations. The model enabled the facility engineers to keep the conditions of the surface facility within the optimized operating envelope throughout the field's lifetime.

Parametric Aircraft Design Optimisation Study Using Span and Mean Chord as Main Design Drivers

2014 ◽  
Vol 1016 ◽  
pp. 365-369 ◽  
Author(s):  
Pedro Albuquerque ◽  
Pedro Gamboa ◽  
Miguel Silvestre
Keyword(s):  
Design Methodology ◽  
Aircraft Design ◽  
Design Parameters ◽  
Flight Performance ◽  
Air Cargo ◽  
Main Design ◽  
Design Specifications ◽  
Performance Requirements ◽  
Aircraft Performance

The present work describes an aircraft design methodology that uses the wingspan and its mean aerodynamic chord as main design parameters. In the implemented tool, low fidelity models have been developed for the aerodynamics, stability, propulsion, weight, balance and flight performance. A Fortran® routine that calculates the aircraft performance for the user defined mission and vehicle’s performance requirements has been developed. In order to demonstrate this methodology, the results for a case study using the design specifications of the Air Cargo Challenge 2013 are shown.

scholarly journals Penggunaan Tes Online “Testmoz” Terintegrasi dengan Googleclassroom sebagai Alternatif Alat Pembelajaran Daring

2020 ◽  
Vol 8 (2) ◽  
pp. 485-497
Author(s):  
Ivan Ashif Ardhana
Keyword(s):  
Information Technology ◽  
Online Learning ◽  
Learning Process ◽  
Assessment Tool ◽  
Rural Students ◽  
Additional Result ◽  
Design Data ◽  
Digital Platforms ◽  
Case Study Design

[The Use of the Online "Testmoz" Test Integrated with Google Classroom as an Alternative Online Learning Tool]. This study aimed to explore students’ acceptance level of the online-based assessment tool “Testmoz” integrated with Google classroom on chemistry courses. The subjects were 51 students of the fifth semester at Jurusan Tadris Kimia IAIN Tulungagung selected by purposive sampling. The method used in this study was a one-shot case study design. Data obtained from students’ questionnaires and interviews before the Covid-19 pandemic start to begin. The result shows 93,30% accepting the level of Testmoz integrated with Google classroom. These findings were supported by students’ interview data as a user that overall result was positive and shows support. The additional result shows the high interest of rural students through learning innovation using the help of information technology. These results may support the learning process on pandemic conditions that use digital platforms such as the Learning Management System (LMS) as supporting tools of learning in this era.

scholarly journals Psychosocial and Demographic Factors That Compound Alcohol Abuse Amongst Youth: A Case Study of Musina High School

2019 ◽  
Vol 11 (7) ◽  
pp. 69 ◽  
Author(s):  
Frans Koketso Matlakala ◽  
Jabulani Calvin Makhubele ◽  
Prudence Mafa
Keyword(s):  
High School ◽  
Young People ◽  
Alcohol Abuse ◽  
Rural Areas ◽  
Demographic Factors ◽  
High Density ◽  
Design Data ◽  
Alcohol Outlets ◽  
The Social

The risk factors that compound alcohol abuse by young people have significant effects of individuals. The sole purpose of social work is to enhance the social functioning of clients and in most cases, clients have impairments as the result of high density of alcohol outlets, affordability of alcohol, which later give birth to psychosocial challenges. The aim of this study is to describe psychosocial and demographic factors compounding alcohol abuse amongst youth. The study employed quantitative approach and descriptive case study design. Data was collected at Musina High School and 96 learners were sampled using stratified sampling to complete the questionnaire. Data was analysed descriptively with the aid of Statistical Package for the Social Science. The study revealed that psychosocial and environmental factors compound to alcohol abuse amongst youth in Musina High School. The study concludes that the context determines the excessive use of alcohol abuse by youth. Young people especially those who reside in rural areas are exposed to high density of alcohol outlets and they are left without guardianship. Due to lack of guardian or parental involvement they end up indulging in excessive use of alcohol.

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