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Search Results: 1 - 10 of 736 matches for " Corneliu Bob "
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About the Causes of the Koror Bridge Collapse  [PDF]
Corneliu Bob
Open Journal of Safety Science and Technology (OJSST) , 2014, DOI: 10.4236/ojsst.2014.42013
Abstract:
This paper has been prepared from basic works published, mainly, after 2008 when the collapse investigation was made available. The main contributions of the paper are: a proper model for the deflections at mid-span of the bridge, the state of stress in elastic and post elastic stage for same phases of behavior, the stage of cracked of the top of cantilever beams, the repair effect on the structure of Koror Bridge, the probabilistic evaluation. The present study is based on well known and simple engineer tools: the one-dimensional beam-type was analyzed.
The Future Concrete: Self-Compacting Concrete
Liana Iure?,Corneliu Bob
Bulletin of the Polytechnic Institute of Jassy, Constructions, Architechture Section , 2010,
Abstract: The paper presents the characteristics of the self-compacting concretes, their advantages and disadvantages when they are used in buildings. Due to its properties and composition, the self-compacting concrete is described here as being one of the future friendly enviromental material for buildings. Tests concerning to obtaining a self-compacting concrete, together with the specific fresh concrete properties tests, are described.
Building Materials Realized with Ultra-Fine Fly Ash and Silica Fume
C?t?lin Badea,Corneliu Bob
Bulletin of the Polytechnic Institute of Jassy, Constructions, Architechture Section , 2005,
Abstract: The author’s experimental researches presented in this paper were focused on the building materials obtained by using ultra-fine fly ash and silica fume (like heavy mortars or compacted lightweight concretes). From experimental determinations there have been studied the following characteristics: the water absorption in function of mass, apparent density, tensile and compression strength (at 7 and 28 days), technical efficiency at 28 days and shrinkage.
Assessment and Strengthening of Existing Rc Framed Structures
Sorin Dan,Corneliu Bob,C?t?lin Badea
Bulletin of the Polytechnic Institute of Jassy, Constructions, Architechture Section , 2006,
Abstract: Existing structures built before the 1970s are gravity load designed with inadequate lateral load resistance because earlier codes specified lower levels of seismic loads and many of these structures are still in service beyond their design life. On the other hand, some deterioration of component parts of buildings is encountered in old structures due to the actions of different hazard factors. Theoretical aspects on the risk assessment of the reinforced concrete structures are pre sented. The earthquake capacity ratio is analyzed for reinforced concrete framed structure. More attention is paid to the seismic shear force capacity and some new procedures are introduced to estimate the earthquake capacity of existing structures. The assessment, rehabilitation and redesign were performed on an industrial RC framed structure. The main problems comprised local damage due to industrial exploitation of some structural elements (concrete cover dislocated over a large surface, complete corro sion of many stirrups, deep corrosion of main reinforcement, some broken reinforcement) and weak reinforcement of columns and beams under seismic action. The redesign and reha bilitation of the RC structure was performed for both types of damages by using reinforced concrete jacketing solutions.
Rehabilitation of Existing Structures Subjected to Extreme Events
Corneliu Bob,Sorin Dan,C?t?lin Badea,Aurelian Gruin
Bulletin of the Polytechnic Institute of Jassy, Constructions, Architechture Section , 2007,
Abstract: The paper presents the characteristics of existing structures under extreme actions, general and specific rehabilitation solutions detailed for reinforced concrete and masonry structures. Rehabilitation of different types of existing structures are described: a reinforced concrete framed structure presenting major detailing vulnerabilities at seismic actions; an apartment house affected by an explosion; two masonry buildings affected by a recent earthquake.
Self-Compacting Concrete in Precast Elements Industry
Corneliu Bob,C?t?lin Badea,Sorin Dan,András Leidal
Bulletin of the Polytechnic Institute of Jassy, Constructions, Architechture Section , 2005,
Abstract: In this paper the authors present information about the Self-Compacting Concrete and experimental results regarding the use of them into precast element industry. This type of concrete does not require vibration for placing and compaction; it is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. The experimental programme has take into account two prestressed beams which were prefabricated and tested on a special stands. The beams of Self-Compacting Concrete with the length of 24 m were prepared at Beton-Star” Kft, Kecsekenet, Hungary, and used at the CASCO, Satu-Mare.
Climate Shifts and the Role of Nano Structured Particles in the Atmosphere  [PDF]
Bob Ursem
Atmospheric and Climate Sciences (ACS) , 2016, DOI: 10.4236/acs.2016.61005
Abstract: A global net sum equilibrium in heat exchange is a fact and thus a global climate change doesn’t exist, but climate shifts in climate cells, especially in the northern temperate cell, do. The global climate has been ever since homeostatic, and has recuperated far huger climate impacts in the past. Current climate models need a drastically revision on the focus of carbon dioxide as main driver. Carbon dioxide and other carbon gasses do influence albedo patterns, but provide globally a homeostatic effect with a commonly accepted increase impact of 0.3 degrees Celsius. Carbon dioxide does not trigger the climate shifts, but is an indicator of exhaust of combustion processes that emit very small particles which drive these climate shifts. They are the fine dust and nano structured particles that cause the shifts of the climate in cells, as demonstrated in this article and results i.e. in more thunder and lightning, extreme weather, distinct droughts and precipitation patterns. The causes underlying these shifts are nano structured particles in the upper troposphere and lower stratosphere, especially largely produced and remain in the temperate climate northern hemisphere cell and get dispersed by jet streams and low and high pressure areas. However, because of electrical charge, caused by friction or due to anthropogenic negatively charged nano structured particle, emissions will travel up to the lower stratosphere and become neutralized at the electro sphere level, and they do also have a tendency to move to the Arctic. The southern hemisphere climate faces limited anthropogenic emissions, because only 10 percent of the world population can contribute with less pollutant providing activities, and hasn’t changed, but that could well be because it is equally influenced and driven, like the northern hemisphere, by the variation of sun activity in diverse cycles. The present problem is that we produce huge amounts of air borne nano structured particles from combustion processes that never exist before. The only nano particles known in nature are those who are limited produced from volcano eruptions and natural forest fires. The natural feedback systems that moderate climate shifts and influence global climate are: convection by cumulonimbus clouds, sea currents and vegetation adaptation. A novel ultra-fine dust electric reduction device (UFDRS-System), created by the author, diminishs to a size of less than 10 nano particles in diameter and thus prevents major electrical drift of nano structured particulates in the upper troposphere and lower
Source Code Comparison of DOS and CP/M  [PDF]
Bob Zeidman
Journal of Computer and Communications (JCC) , 2016, DOI: 10.4236/jcc.2016.412001
Abstract: In a previous paper [1], I compared DOS from Microsoft and CP/M from Digital Research Inc. (DRI) to determine whether the original DOS source code had been copied from CP/M source code as had been rumored for many years [2] [3]. At the time, the source code for CP/M was publicly available but the source code for DOS was not. My comparison was limited to the comparison of the DOS 1.11 binary code and the source code for CP/M 2.0 from 1981. Since that time, the Computer History Museum in Mountain View, California received the source code for DOS 2.0 from Microsoft and was given permission to make it public. The museum also received the source code for DOS 1.1 from Tim Paterson, the developer who was originally contracted by Microsoft to write DOS. In this paper, I perform a further analysis using the newly accessible source code and determine that no code was copied. I further conclude that the commands were not copied but that a substantial number of the system calls were copied.
The Scientific Evidence That “Intent” Is Vital for Healthcare  [PDF]
Bob Johnson
Open Journal of Philosophy (OJPP) , 2017, DOI: 10.4236/ojpp.2017.74022
Abstract: THINKING cannot occur without electrons, a point philosophically, scientifically and irrefutably confirmed for all, by the Electroencephalogram (EEG). However for 100 years, electrons and their ilk have scrupulously obeyed the Uncertainty Principle. Probability rules. The way human beings reason is by concluding that if event B is seen to follow cause A, it will do so again tomorrow—electrons don’t even support this today. Hume’s critique of causality which Kant failed to refute, gains traction from Quantum Mechanics. Despite needing to insert the word “probably” into every human reasoning, healthcare demonstrates an element of unexpected stability. The label “intent” is expanded to cover this anomaly, endeavouring to highlight how living cells cope with the impact of this unknowability, this Uncertainty. Mental health follows suit, though here the uncertainty comes additionally from “blockage” of the frontal lobes consequent upon trauma/terror. The collapse of today’s psychiatry is pathognomonic, and medically solipsistic. The role of “intent”, and its close relative, consent, are offered as remedies, not only for mental disease, relabelled here “social defeat”, but also for the global disease of violence, culminating in the biggest health threat of them all, thermonuclear war.
Linear openness of multifunctions in metric spaces
Corneliu Ursescu
International Journal of Mathematics and Mathematical Sciences , 2005, DOI: 10.1155/ijmms.2005.203
Abstract: We discuss linear openness results for multifunctions with closed graphs in metric spaces.
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