Resource Allocation and Leveling in Construction Management Projects with Resource Histogram
Issue:
Volume 5, Issue 6, December 2020
Pages:
91-95
Received:
10 December 2020
Accepted:
17 December 2020
Published:
31 December 2020
Abstract: Resource allocation and leveling in construction management projects have been an enthusiastic subject to plenty of researchers since the advancement of the scheduling techniques. Many researchers have studied various versions of the benchmark resource leveling and allocation optimization problems using various scheduling techniques. However, in this study, a straightforward scheduling technique called resource histogram is utilized to allocate and level the available resources. Moreover, the maximum number of resources at peak time is considered as a significant aspect of the case study. Since peak demand isn’t a preferred by the contractor. The effects of resources are also examined in order to demonstrate the variation of the total duration of the project which provides flexibility to decision-makers in making intelligent decisions regarding the use of the resources. Thereby, a construction project with seven activities taken from the technical literature is examined with constrained as well as unconstrained conditions using Microsoft Excel. However, task scheduling is performed using critical path method (CPM). The results indicate that limitation on resources significantly affect the performance and cause the project to be extended beyond the scheduled duration. Moreover, besides renewable, non-renewable resources (e.g., cost demand) may also be significant parameters and this extension can be considered in future research.
Abstract: Resource allocation and leveling in construction management projects have been an enthusiastic subject to plenty of researchers since the advancement of the scheduling techniques. Many researchers have studied various versions of the benchmark resource leveling and allocation optimization problems using various scheduling techniques. However, in th...
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Coast Guard Interdictions and the Use of Advanced Technology by Adversaries
Susan Pickman,
Lawrence A. Howard
Issue:
Volume 5, Issue 6, December 2020
Pages:
96-102
Received:
19 February 2020
Accepted:
18 May 2020
Published:
31 December 2020
Abstract: This paper reviews the history of the United States Coast Guard (USCG) and its ever-expanding and evolving security mission, both in the present day and into the future. The authors begin by describing the broad history of maritime crime, from piracy and smuggling to political terrorism and human trafficking. The paper next hones in on the creation and transformation of the USCG—from essentially a seagoing force charged primarily with protecting the fledgling U.S. government’s main source of revenue through tariffs, to a key, multifaceted organization under the Department of Homeland Security (DHS) charged with no less than 11 major missions on both land and sea—a transformation that is ongoing to the present day. The paper identifies the increasing variety of both air and sea vessels that international criminals and cartels use to conduct drug smuggling and human trafficking, and even for the purpose of launching terrorist attacks. Today these methods include not just traditional means, like ships and planes, but also seemingly outlandish devices like flying drones and unmanned submersibles that can be—and have been—used to move all manner of contraband. The authors go on to describe the innovative technologies the USCG is employing to combat all of these diverse threats, including highly sophisticated intelligence gathering capabilities and all manner of high-tech digital scanning technology specifically aimed at more effective contraband detection. Finally, the paper concludes by highlighting the most pressing current and future security challenges that the USCG faces, and emanating from some very surprising origins: the use of evolving digital technology to support covert illegal operations, and the worldwide, international effort to stop the spread of the most dangerous pandemic in over 100 years.
Abstract: This paper reviews the history of the United States Coast Guard (USCG) and its ever-expanding and evolving security mission, both in the present day and into the future. The authors begin by describing the broad history of maritime crime, from piracy and smuggling to political terrorism and human trafficking. The paper next hones in on the creation...
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Falsafah Science of Fritjof Capra in Handling the Environment Destruction
Jefirstson Richset Riwukore,
Fellyanus Habaora,
Yohanes Susanto,
Asnath Maria Fuah,
Rudi Priyanto,
Luki Abdullah,
Ahmad Yani,
Bagus Priyo Purwanto
Issue:
Volume 5, Issue 6, December 2020
Pages:
103-115
Received:
14 July 2020
Accepted:
5 August 2020
Published:
31 December 2020
Abstract: Fritjof Capra introduces a new vision in seeing the reality through the discovery of holistic ecological truth that is linear in nature with the basics of holistic ontology pluralist-spiritualistic-organism and a basis epistemological of synthesis, interactive dialogue, and subject equality. Based on this, Capra explained that the balance between science and technology that is limited by moral values and religion will create ecological sustainability by itself, while the capitalist, materialistic, and hedonism perspective of humanity overrides spiritualism only as a pseudo science. This causes Capra's world view to appear in various fields as the wisdom of nature which is described as the ability of the planet's ecological ecosystems to organizing themselves in complex ways. This is seeing in the perspective of Capra, a science for sustainbale living which explained that science for the sustainability of life no need to create sustainable human society from zero, but can mimic natural ecosystems which are plant communities, animals and microorganisms that are sustainable. This condition explains that when there is a balance between the use of science and technology which is limited by aspects of conscience and religion (Yang) then sustainability automatically occurs. But due to the different perspectives that further increase environmental damage such as climate change, Capra offers the concept of ecoliteracy that guarantees a solid continuation of life together on planet Earth, namely: networks, cycles, solar energy, partnerships, diversity, and balance dynamic. Therefore, Capra offers a solution for solving climate change is eco-literacy which he calls spreading to various fields of science because it will develop into an ecodesign. The groups expected to understand ecoliteration in the face of environmental change (climate change) are politicians, business leaders, professionals at all levels, and educational institutions. This group, according to Capra, is a group of public or institutional policy makers and trusted input providers who have the real ability to create community impacts far ahead.
Abstract: Fritjof Capra introduces a new vision in seeing the reality through the discovery of holistic ecological truth that is linear in nature with the basics of holistic ontology pluralist-spiritualistic-organism and a basis epistemological of synthesis, interactive dialogue, and subject equality. Based on this, Capra explained that the balance between s...
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