scholarly journals A Model for Developing Existing Ports Considering Economic Impact and Network Connectivity

2021 ◽  
Vol 13 (7) ◽  
pp. 3705
Author(s):  
Veterina Nosadila Riaventin ◽  
Sofyan Dwi Cahyo ◽  
Ivan Kristianto Singgih
Keyword(s):  
Network Connectivity ◽  
Economic Consequences ◽  
Real Problem ◽  
Container Transportation ◽  
Container Ports ◽  
Investment Priority ◽  
Time Required ◽  
Transportation Flows ◽  
Port Clusters

This study discusses the problem of determining which container port should be developed within an existing network and when this should be carried out. A case study of Indonesia’s port network is presented, where several new ports are to be improved to ensure smooth interisland transportation flows of goods. The effects of the investment on economic consequences and increased network connectivity are assessed. When improving the ports, we consider that the available budget limits the investment. The network connectivity is evaluated by considering the number of reachable ports from the developed ports or transportation time required from other ports within the same port cluster. Based on our knowledge, our study is the first one that discusses the investment problem in multiple container ports under single management, as well as its effects regarding the increase in container flows. The problem is introduced and three mathematical models are proposed and used to solve a real problem. The results show that different models have different improved aspects of container transportation flows—e.g., a balanced improvement of the whole port network (Model 2) and appropriate investment priority for port clusters (Model 3).

scholarly journals Evaluating Life Cycle of Buildings Using an Integrated Approach Based on Quantitative-Qualitative and Simplified Best-Worst Methods (QQM-SBWM)

2021 ◽  
Vol 13 (8) ◽  
pp. 4487
Author(s):  
Maghsoud Amiri ◽  
Mohammad Hashemi-Tabatabaei ◽  
Mohammad Ghahremanloo ◽  
Mehdi Keshavarz-Ghorabaee ◽  
Edmundas Kazimieras Zavadskas ◽  
...  
Keyword(s):  
Life Cycle ◽  
Computer Software ◽  
Integrated Approach ◽  
Comfort Level ◽  
Combination Method ◽  
New Combination ◽  
Numerical Examples ◽  
Environmental Consequences ◽  
Time Required

Evaluating the life cycle of buildings is a valuable tool for assessing sustainability and analyzing environmental consequences throughout the construction operations of buildings. In this study, in order to determine the importance of building life cycle evaluation indicators, a new combination method was used based on a quantitative-qualitative method (QQM) and a simplified best-worst method (SBWM). The SBWM method was used because it simplifies BWM calculations and does not require solving complex mathematical models. Reducing the time required to perform calculations and eliminating the need for complicated computer software are among the advantages of the proposed method. The QQM method has also been used due to its ability to evaluate quantitative and qualitative criteria simultaneously. The feasibility and applicability of the SBWM were examined using three numerical examples and a case study, and the results were evaluated. The results of the case study showed that the criteria of the estimated cost, comfort level, and basic floor area were, in order, the most important criteria among the others. The results of the numerical examples and the case study showed that the proposed method had a lower total deviation (TD) compared to the basic BWM. Sensitivity analysis results also confirmed that the proposed approach has a high degree of robustness for ranking and weighting criteria.

scholarly journals Evaluation of the energy consumption of container diesel trucks in a container terminal: A case study at Klaipeda port

2021 ◽  
Vol 104 (3) ◽  
pp. 003685042110355
Author(s):  
Tomas Eglynas ◽  
Sergej Jakovlev ◽  
Valdas Jankunas ◽  
Rimantas Didziokas ◽  
Jolanta Januteniene ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Dynamic Properties ◽  
Container Terminal ◽  
Superposition Principle ◽  
Critical Parameters ◽  
Container Transportation ◽  
Industrial Emissions ◽  
Transportation Process ◽  
Diesel Trucks

Introduction: In the paper, we examine the energy consumption efficiency of specialized container diesel trucks engaged in container transportation at a seaport terminal. Objectives: Using the container terminal at Klaipėda in Lithuania as the background for the research, we produced an improved energy consumption model for measuring the theoretical energy consumption and regeneration of diesel trucks at the terminal and provide a comparative analysis. Methods: We created a mathematical model which describes the instantaneous energy consumption of the diesel trucks, taking into account their dynamic properties and the overall geometry of their routes—“Ship-Truck-Stack-Ship”—using the superposition principle. We investigated other critical parameters relevant to the model and provide a statistical evaluation of the transportation process using data from a case study of Klaipėda port, where we collected measurements of container transportation parameters using georeferenced movement detection and logs from wireless equipment positioned on the diesel-powered container trucks. Results: The modeling results showed that an instantaneous evaluation of energy consumption can reveal areas in the container transportation process which have the highest energy loss and require the introduction of new management and process control initiatives to address the regulations which are designed to decrease harmful industrial emissions and encourage novel technologies and thereby increase the eco-friendliness of existing systems. Conclusion: Based on the research results, the article can provide a reference for the estimation of diesel truck efficiency in seaport terminal operations.

PCS For Families: A Case Study in the Participatory Design of a Technology-Rich Elementary School Classroom

1998 ◽  
Vol 42 (8) ◽  
pp. 646-650 ◽  
Author(s):  
Faith McCreary ◽  
Ray Reaux ◽  
Roger Ehrich ◽  
Susan Hood ◽  
Keith Rowland
Keyword(s):  
Elementary School ◽  
Participatory Design ◽  
School Setting ◽  
Network Connectivity ◽  
Multiple Roles ◽  
System Support ◽  
Laboratory Facilities ◽  
Working Day ◽  
Workspace Design

Computers and network connectivity in the classroom raise new challenges in workspace design. Unlike corporate or dedicated laboratory facilities, a technology-rich classroom plays multiple roles throughout its working day. Classroom design demands flexible and robust construction, particularly when applied in an elementary school setting. Using the PCs for Families project as a case study, this paper discusses design issues of a technology-rich networked classroom from ergonomic design to system support.

scholarly journals Simultaneous Parameters Identifiability and Estimation of anE. coliMetabolic Network Model

2015 ◽  
Vol 2015 ◽  
pp. 1-21 ◽  
Author(s):  
Kese Pontes Freitas Alberton ◽  
André Luís Alberton ◽  
Jimena Andrea Di Maggio ◽  
Vanina Gisela Estrada ◽  
María Soledad Díaz ◽  
...  
Keyword(s):  
Experimental Data ◽  
Escherichia Coli ◽  
Metabolic Networks ◽  
Initial Conditions ◽  
Model Fit ◽  
Real Problem ◽  
Kinetic Rates ◽  
K 12 ◽  
Procedure Model

This work proposes a procedure for simultaneous parameters identifiability and estimation in metabolic networks in order to overcome difficulties associated with lack of experimental data and large number of parameters, a common scenario in the modeling of such systems. As case study, the complex real problem of parameters identifiability of theEscherichia coliK-12 W3110 dynamic model was investigated, composed by 18 differential ordinary equations and 35 kinetic rates, containing 125 parameters. With the procedure, model fit was improved for most of the measured metabolites, achieving 58 parameters estimated, including 5 unknown initial conditions. The results indicate that simultaneous parameters identifiability and estimation approach in metabolic networks is appealing, since model fit to the most of measured metabolites was possible even when important measures of intracellular metabolites and good initial estimates of parameters are not available.

Assessment of destressing drilling efficiency using numerical methods: A case-study of Oktyabrsky deposit

2021 ◽  
pp. 26-31
Author(s):  
M. P. Sergunin ◽  
T. P. Darbinyan ◽  
T. S. Mushtekenov ◽  
V. V. Balandin
Keyword(s):  
Rock Mass ◽  
Theoretical Research ◽  
Labor Input ◽  
Efficiency Criterion ◽  
Strength And Deformation ◽  
Low Efficiency ◽  
Full Scale Tests ◽  
Time Required ◽  
Polar Division

Mineral mining in rockburst-hazardous conditions should involve various precautions in compliance with federal regulations and standards. One of the main methods to prevent rock bursts is destressing drilling. In this method, a yielding zone is artificially created. The strength and deformation characteristics in this zone differ from the same characteristics of enclosing rock mass, and redistribution of stresses takes place as a result. Efficiency of destressing drilling is estimated in terms of ore body S-2 in Komsomolsky Mine. The efficiency criterion is selected to be the safety factor of rock mass with and without destressing drilling. Low efficiency of destressing drilling means that this method is readily replaceable by the other techniques of lesser labor input, for example, by reduction in the rate of mining, or by seasoning of underground excavations for some time required for redistribution of stresses to take place. Based on the theoretical research and the conclusions drawn at NorNickel’s Polar Division, the full-scale tests are scheduled for the implementation in order to gradually abandon destessing drilling in rockburst-hazardous Talnakh and Oktyabrsky ore fields. The authors appreciate participation of V. P. Marysyuk from NorNickel’s Polar Division in this study.

scholarly journals EVALUASI DAN DESAIN SISTEM INFORMASI AKUNTANSI PEMUNGUTAN DAN PENYETORAN PPN DALAM UPAYA MENINGKATKAN EFISIENSI KINERJA SUBDINAS PERPAJAKAN PADA PT. PELABUHAN INDONESIA III (PERSERO) CABANG TANJUNG PERAK

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Anindya Retno Wardhani ◽  
A.A Gde Satia Utama
Keyword(s):  
Information System ◽  
Accounting Information ◽  
Data Entry ◽  
Qualitative Approach ◽  
Real Problem ◽  
Research Subject ◽  
Case Study Method ◽  
Accounting Information System ◽  
The Government

Branch of PT Pelabuhan Indonesia III (Persero) in Tanjung Perak is one of the institution body that appointed by the Government to carry out the collection and remittance of WAPU VAT according to PMK No. 85 / PMK.03 / 2012 (amended by PMK No. 136 / PMK.03 / 2012). WAPU VAT collection and deposit system are inefficient because it requires a lot of time and effort when it comes to input the data entry of tax invoice, printing Tax Deposit and sent it to Bank Perception. Three steps activities need to be done more than once. Therefore, Branch of PT Pelabuhan Indonesia III (Persero) in Tanjung Perak need the collection and remittance of the WAPU VAT system that sufficient to improve the efficiency of tax suboffices performance.This research aims to design the accounting information system for collecting and depositing process WAPU VAT. WAPU VAT Deposit using e-tax payment application are expected to overcome the problems that will arise in the WAPU VAT system deposit.Exploratory qualitative approach with case study method chosen in order to dig up the real problem occurs and find a solution. This research are expected to contribute significantly towards Branch of PT Pelabuhan Indonesia III (Persero) in Tanjung Perak as a research subject. In addition, the implementation of draft e-tax application payment system are expected to improve efficiency process of collection and remittance of WAPU VAT. Keyword : System Design, Wapu VAT, Efficiency, e-tax payment

Field-Proven Well Surveillance Techniques Designed for an Early Well Scaling Diagnosis and Timely Well Performance Reinstatement: Case Study from the Kashagan Field

2021 ◽  
Author(s):  
Aktoty Kauzhanova ◽  
Lyudmila Te ◽  
John Reedy ◽  
Thaddeus Ivbade Ehighebolo ◽  
Mirko Bastiaan Heinerth ◽  
...  
Keyword(s):  
Surveillance Program ◽  
Successful Implementation ◽  
Well Testing ◽  
Well Performance ◽  
Root Cause ◽  
Operating Environments ◽  
Initial Stage ◽  
Calcite Deposition ◽  
Time Required

Abstract Some wells in the Kashagan field did not perform as well as expected. Despite producing virtually no water, calcite deposition was found to be the root cause of the problem. A comprehensive well surveillance program, which was proven to be very efficient for an early scaling diagnosis, was developed by the operator, North Caspian Operating Company (hereafter NCOC). As a result, well scaling is currently well managed and prevented from reoccurring. The objective of this paper is to share an early experience with well scaling in the Kashagan field, as well as to describe the developed set of well surveillance techniques. The aim of the various well surveillance techniques discussed in this paper is to improve an Operator's ability to identify the very first signs of scale accumulation. This, in its turn, enables to introduce timely adjustments to the well operating envelope and to schedule a scale remediation / inhibition treatment with the intention to prevent any potential scaling initiation from further development. The approach is quite extensive and incorporates continuous BHP/BHT monitoring, routine well testing, PTA analysis, and fluid/water sampling. Developed approach experienced multiple revisions and modifications. Further optimization continues, however, the described well surveillance techniques represent the latest Operator's vision on the most efficient way for well scaling monitoring and identification. In the Kashagan field, BHP/BHT readings have proved to be the most direct and instantaneous indication of any early signs of potential deterioration in well performance (qualitative analysis) while well testing and PTAs are considered as the most essential techniques in confirming and quantifying scaling severity (quantitative analysis). It is important to mention that BHT increase is explained by Joule-Thomson heating effect being specific for the Kashagan fluid (happening during increased pressure drawdown). This, in turns, enables to predict future well performance, design well operating envelop accordingly and, most importantly, develop a yearly schedule for proactive well treatments with SI. In conclusion, it shall be highlighted that discussed complex of well surveillance techniques has been concluded to be very efficient and reliable tool in identifying any scaling tendencies at its initial stage. Due to successful implementation of this approach in the Kashagan field, scale development is now well-managed and kept under control. To mention, that utilization of well surveillance techniques and methods outlined in this paper may reduce the time required to identify and ultimately mitigate well scale accumulation in any active assets with similar operating environments.

Weaponizing Water in the Middle East

2020 ◽  
pp. 151-170
Author(s):  
Tobias von Lossow
Keyword(s):  
Water Resources ◽  
Middle East ◽  
Economic Consequences ◽  
Islamic State ◽  
Modern Warfare

Chapter 7 presents a closed case study on warfare in Syria and Iraq to contextualize the practice of weaponization of water by the so-called Islamic State (IS) discovering that with very few exceptions, the warring parties have used it as a weapon—in various ways, for multiple reasons, and with different impact in scale and scope resulting in severe humanitarian, environmental, and economic consequences. Nonetheless, the assessment of historical and regional records herein contributes to an understanding of IS’s role as a kind of front runner – frequently, systematically and openly weaponizing water to achieve its political and military goals. Ultimately, the chapter frames broader implications for water resources and water infrastructures as applied to future conflicts in the Middle East leading to a better understanding of the risks, threats, and mechanisms that may potentially allow the prevention of such acts –that are indeed orchestrated on a more frequent basis in the Middle East—from encouraging norm construction in the conduct of modern warfare.

Time–space relationships among structural and metamorphic aureoles related to granite emplacement: a case study from the Serre Massif (southern Italy)

2012 ◽  
Vol 150 (3) ◽  
pp. 441-454 ◽  
Author(s):  
VINCENZO FESTA ◽  
ALFREDO CAGGIANELLI ◽  
ANTONIO LANGONE ◽  
GIACOMO PROSSER
Keyword(s):  
Time Lag ◽  
Microstructural Analysis ◽  
Geometrical Analysis ◽  
Granite Emplacement ◽  
Time Space ◽  
Minimum Strain Rate ◽  
Time Required ◽  
Thermal Perturbations ◽  
Peak Assemblage

AbstractTectonic and thermal perturbations, related to emplacement of granodiorite in the upper continental crust, have been investigated in the late-Hercynian basement exposed in southern Calabria (Italy). Here, the structural aureole is marked by the presence of a major rim fold adjacent to the intrusive contact for a length of at least 20 km. Geometrical analysis of the structural aureole and related foliations, lineations and crenulations reveals that the perturbed zone is at least 3000 m wide and characterized by an open synform trending nearly parallel to the intrusive contact. This pattern is compatible with a laccolith-like mode of magma emplacement, related to the accretion of the pluton that shouldered weak phyllitic and slaty wall rocks. The metamorphic aureole, about 1800 m wide, is characterized by biotite, cordierite and andalusite that appear sequentially in spotted schists and hornfelses approaching the intrusive contact. The peak assemblage equilibrated between 535 and 590°C at pressures between 175 and 200 MPa, confirmed by Al-in-hornblende barometry on granodiorite. Microstructural analysis allowed the inference of a time lag between the thermal and tectonic perturbations. With the aid of thermal modelling it was possible to quantify the time required to reach the peak temperature at a distance from the intrusive contact where cordierite spots and andalusite porphyroblasts clearly overprint crenulations. This estimate represents the time limit to accomplish deformation in the inner portion of the aureole and thus indicates a minimum strain rate of 4 × 10−14 s−1 within the country rocks during granodiorite intrusion.

A Methodology to Improve the Decision-Making Process

2018 ◽  
Vol 9 (1) ◽  
pp. 59-81 ◽  
Author(s):  
Christopher Nikulin ◽  
Paulina Solis ◽  
Mónica López-Campos
Keyword(s):  
Decision Making ◽  
Complex Analysis ◽  
Decision Making Process ◽  
Real Problem ◽  
Good Representation ◽  
Problem Situation ◽  
Simple Task ◽  
Analytical Skills ◽  
Modeling Process

The modeling approach is relevant to support the decision-making process. Modeling requires a structured approach, knowledge and specific analytical skills in order to obtain an appropriate representation of the situation under analysis. Nevertheless, creating a good representation of the reality is not a simple task; it is not trivial to choose an analysis approach since most of decision-makers could have partial lacks information during the different stages of the modeling process. Considering this, we propose a methodology to support the decision-making process by using a novel structured integration of different quantitative and qualitative tools, such as system dynamics, decision theory and the theory of inventive problem solving (TRIZ), in order to simplify the modeling process in complex analysis. A case study attempts to illustrate the application of the methodology in a real problem situation, related to the analysis of disasters within the boundaries of Valparaíso City, specifically fires.

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