Challenges in line-of-balance scheduling

2002-11-01
Arditi, David
Tokdemir, Onur Behzat
Suh, Kangsuk
The line-of-balance ~LOB! method of scheduling is well suited to projects that are composed of activities of a linear and repetitive nature. The objective of this study is to set down the basic principles that can be used in the development of a computerized LOB scheduling system that overcomes the problems associated with existing systems and creates solutions to problems encountered in the implementation of repetitive-unit construction. The challenges associated with LOB scheduling include developing an algorithm that handles project acceleration efficiently and accurately, recognizing time and space dependencies, calculating LOB quantities, dealing with resource and milestone constraints, incorporating the occasional nonlinear and discrete activities, defining a radically new concept of criticalness, including the effect of the learning curve, developing an optimal strategy to reduce project duration by increasing the rate of production of selected activities, performing cost optimization, and improving the visual presentation of LOB diagrams.
Journal of Construction Engineering and Management

Suggestions

A new and stereospecific synthesis of an inositol analogue: bis-homoinositol
Kara, Y; Balcı, Metin (2003-03-17)
The photooxygenation of trans-8-(acetyloxy)bicyclo[4.2.0]octa-2,4-dien-7-yl acetate afforded the bicyclic endoperoxide. Reduction of the endoperoxide with thiourea followed by acetylation gave the corresponding tetraacetate. The KMnO4 oxidation of the tetraacetate followed by acetylation gave dihydroxytetraacetate Ammonolysis of tetraacetate afforded the bis-homoinositol, bicyclo[4.2.0]octane-2,3,4,5,7,8-hexol.
Reaction of pentacarbonyl(eta(2)-bis(trimethylsilyl)ethyne)tungsten(0) with tricyclohexylphosphine: X-ray structure of pentacarbonyltricyclohexylphosphinetungsten(0)
Demircan, O; Özkar, Saim; Ulku, D; Yildirim, LT (2003-12-15)
The pentacarbonyl(?(2)-bis(trimethylsilyl)ethyne)tungsten(0), W(CO)(5)(?(2)-btmse), reacts with tricyclohexylphosphine, PCy3, to yield two stable endproducts which could be isolated and fully characterized by using the single crystal X-ray diffractometry and the MS, IR, and NMR spectroscopy: W(CO)(5)(PCy3) and trans-W(CO)(4)(PCy3)(2). The former complex is the alkyne substitution product, while the latter one is formed from the conversion of its labile cis-isomer, which is generated by further reaction of t...
A new antiaromatic compound: 1,4-biphenylenequinone synthesis and trapping reactions: can a quinone unit stabilize the cyclobutadiene?
Kilic, H; Balcı, Metin (2001-12-03)
The photooxygenation of 4a,8b-dihydrobiphenylene affords an endoperoxide. NEt3-catalyzed rearrangement of this endoperoxide gave the corresponding hydroxy enone, while the CoTPP-catalyzed rearrangement afforded a bisepoxide. MnO2 oxidation of hydroxy enol leads to 4a,8b-dihydrobiphenylene-1,4-dione. The NIBS bromination of this dione produces mono- and dibromides. NEt3-supported elimination of monobromide and zinc elimination of dibromide afforded the target compound, 1,4-biphenylenequinone, which was trapp...
Theoretical aspects of some 4-[2,6-substituted-9H-purin-9-yl]-2-cyclopentene-1-methanol derivatives as anti-HIV agents
Türker, Burhan Lemi; Sudagidan, M (2000-01-01)
Some (-)-(1S,4R) -4-[2-amino-6-(substituted)-9H-purin-9-yl]-2-cyclopentene-1-methanol derivatives have been considered for semiempirical treatment at the level of AM1 type calculations. Certain theoretical structure-activity relationship were investigated.
Effects of extrapolation boundary conditions on subsonic mems flows over a flat plate
Turgut, Özhan Hulusi; Çelenligil, Mehmet Cevdet; Department of Aerospace Engineering (2006)
The flavin-containing monooxygenases (FMO; E.C.1.14.13.8) are microsomal NADPH and oxygen-dependent flavoprotein enzymes that catalyze the oxidation of a wide variety of xenobiotics, including drugs and environmental toxicants. Nucleophiles containing nitrogen, sulfur, phosphorus and selenium heteroatoms are the substrates of FMO. Bovine liver microsomal FMO enzyme activity was characterized using methimazole as substrate, which is a highly specific substrate for FMO. From 12 different bovine liver samples,...
Citation Formats
D. Arditi, O. B. Tokdemir, and K. Suh, “Challenges in line-of-balance scheduling,” Journal of Construction Engineering and Management, pp. 545–556, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40328.