bluuebunny/crossref_metadata_2025 huggingface dataset:
Method simplifying calculation of coefficients of fractional parentage for translationally invariant shell-model
Authors: Mickevičius Saulius , Germanas Darius , Kalinauskas Ramutis
Published: May 2013

A new procedure for large-scale calculations of the coefficients of fractional parentage (CFP) for many-particle systems is presented. The approach is based on a simple enumeration scheme for antisymmetric N particle states, and we suggest an efficient method for constructing the eigenvectors of two-particle transposition operator $$P_{N_1 ,N}$$ in a subspace where N
1 and N
2 = N − N
1 nucleons basis states are already antisymmetrized. The main result of this paper is that according to permutation operators $$P_{N_1 ,N}$$ eigenvalues we can distinguish totally asymmetrical N particle states from the other states with lower degree of asymmetry.
Robust projective outer synchronization of coupled uncertain fractional-order complex networks
Authors: Wang Junwei , Zhang Yun
Published: May 2013

In this work, we propose a novel projective outer synchronization (POS) between unidirectionally coupled uncertain fractional-order complex networks through scalar transmitted signals. Based on the state observer theory, a control law is designed and some criteria are given in terms of linear matrix inequalities which guarantee global robust POS between such networks. Interestingly, in the POS regime, we show that different choices of scaling factor give rise to different outer synchrony, with various special cases including complete outer synchrony, anti-outer synchrony and even a state of amplitude death. Furthermore, it is demonstrated that although stability of POS is irrelevant to the inner-coupling strength, it will affect the convergence speed of POS. In particular, stronger inner synchronization can induce faster POS. The effectiveness of our method is revealed by numerical simulations on fractional-order complex networks with small-world communication topology.
Prediction and analysis of radial overcut in holes drilled by electrochemical machining process
Authors: Tajdari Mehdi , Chavoshi Saeed
Published: May 2013

Radial overcut predictive models using multiple regression analysis, artificial neural network and co-active neurofuzzy inference system are developed to predict the radial overcut during electrochemical drilling with vacuum extraction of electrolyte. Four process parameters, electrolyte concentration, voltage, initial machining gap and tool feed rate, are selected to develop the models. The comparison between the results of the presented models shows that the artificial neural network and co-active neuro-fuzzy inference system models can predict the radial overcut with an average relative error of nearly 5%. Main effect and interaction plots are generated to study the effects of process parameters on the radial overcut. The analysis shows that the voltage, electrolyte concentration and tool feed rate have significant effect on radial overcut, respectively, while initial machining gap has a little effect. It is also found that the increase of the voltage and electrolyte concentration increases the radial overcut and the increase of the tool feed rate decreases the radial overcut.
Frequency-Dependent Magnetic Susceptibility of Magnetite and Cobalt Ferrite Nanoparticles Embedded in PAA Hydrogel
Authors: Van Berkum Susanne , Dee Joris , Philipse Albert , Erné Ben
Published: May 2013

Chemically responsive hydrogels with embedded magnetic nanoparticles are of interest for biosensors that magnetically detect chemical changes. A crucial point is the irreversible linkage of nanoparticles to the hydrogel network, preventing loss of nanoparticles upon repeated swelling and shrinking of the gel. Here, acrylic acid monomers are adsorbed onto ferrite nanoparticles, which subsequently participate in polymerization during synthesis of poly(acrylic acid)-based hydrogels (PAA). To demonstrate the fixation of the nanoparticles to the polymer, our original approach is to measure low-field AC magnetic susceptibility spectra in the 0.1 Hz to 1 MHz range. In the hydrogel, the magnetization dynamics of small iron oxide nanoparticles are comparable to those of the particles dispersed in a liquid, due to fast Néel relaxation inside the particles; this renders the ferrogel useful for chemical sensing at frequencies of several kHz. However, ferrogels holding thermally blocked iron oxide or cobalt ferrite nanoparticles show significant decrease of the magnetic susceptibility resulting from a frozen magnetic structure. This confirms that the nanoparticles are unable to rotate thermally inside the hydrogel, in agreement with their irreversible fixation to the polymer network.
Isotope Effects as Probes for Enzyme Catalyzed Hydrogen-Transfer Reactions
Authors: Roston Daniel , Islam Zahidul , Kohen Amnon
Published: May 2013

Kinetic Isotope effects (KIEs) have long served as a probe for the mechanisms of both enzymatic and solution reactions. Here, we discuss various models for the physical sources of KIEs, how experimentalists can use those models to interpret their data, and how the focus of traditional models has grown to a model that includes motion of the enzyme and quantum mechanical nuclear tunneling. We then present two case studies of enzymes, thymidylate synthase and alcohol dehydrogenase, and discuss how KIEs have shed light on the C-H bond cleavages those enzymes catalyze. We will show how the combination of both experimental and computational studies has changed our notion of how these enzymes exert their catalytic powers.
A Ubiquitous NFC Solution for the Development of Tailored Marketing Strategies Based on Discount Vouchers and Loyalty Cards
Authors: Borrego-Jaraba Francisco , Garrido Pilar , García Gonzalo , Ruiz Irene , Gómez-Nieto Miguel
Published: May 2013

Because of the global economic turmoil, nowadays a lot of companies are adopting a “deal of the day” business model, some of them with great success. Generally, they try to attract and retain customers through discount coupons and gift cards, using, generally, traditional distribution media. This paper describes a framework, which integrates intelligent environments by using NFC, oriented to the full management of this kind of businesses. The system is responsible for diffusion, distribution, sourcing, validation, redemption and managing of vouchers, loyalty cards and all kind of mobile coupons using NFC, as well as QR codes. WingBonus can be fully adapted to the requirements of marketing campaigns, voucher providers, shop or retailer infrastructures and mobile devices and purchasing habits. Security of the voucher is granted by the system by synchronizing procedures using secure encriptation algorithms. The WingBonus website and mobile applications can be adapted to any requirement of the system actors.
An All Fiber Intrinsic Fabry-Perot Interferometer Based on an Air-Microcavity
Authors: Jáuregui-Vázquez Daniel , Estudillo-Ayala Julián , Rojas-Laguna Roberto , Vargas-Rodríguez Everardo , Sierra-Hernández Juan , Hernández-García Juan , Mata-Chávez Ruth
Published: May 2013

In this work an Intrinsic Fabry-Perot Interferometer (IFPI) based on an air-microcavity is presented. Here the air microcavity, with silica walls, is formed at a segment of a hollow core photonic crystal fiber (HCPCF), which is fusion spliced with a single mode fiber (SMF). Moreover, the spectral response of the IFPI is experimentally characterized and some results are provided. Finally, the viability to use the IFPI to implement a simple, compact size, and low cost refractive index sensor is briefly analyzed.
Biosensors in Clinical Practice: Focus on Oncohematology
Authors: Fracchiolla Nicola , Artuso Silvia , Cortelezzi Agostino
Published: May 2013

Biosensors are devices that are capable of detecting specific biological analytes and converting their presence or concentration into some electrical, thermal, optical or other signal that can be easily analysed. The first biosensor was designed by Clark and Lyons in 1962 as a means of measuring glucose. Since then, much progress has been made and the applications of biosensors are today potentially boundless. This review is limited to their clinical applications, particularly in the field of oncohematology. Biosensors have recently been developed in order to improve the diagnosis and treatment of patients affected by hematological malignancies, such as the biosensor for assessing the in vitro pre-treatment efficacy of cytarabine in acute myeloid leukemia, and the fluorescence resonance energy transfer-based biosensor for assessing the efficacy of imatinib in chronic myeloid leukemia. The review also considers the challenges and future perspectives of biosensors in clinical practice.
D'une écriture infinie : Kerouac en-Joyce the road
Authors: Briolais Florence , Mesclier Michel
Published: May 2013

Résumé L’œuvre de James Joyce fut pour Jack Kerouac à la fois une référence et une source d’inspiration. Serait-ce par analogie de structure, du fait d’un nouage subjectif fautif d’un lapsus ? Dans cet article, sera montré que ce nouage est comparable à celui que Lacan problématisa chez Joyce : un imaginaire désarrimé de l’articulation symbolique-réel.
Intraoperative Contralateral View for Assessing Accurate Syndesmosis Reduction
Authors: Schreiber Joseph J. , McLawhorn Alexander S. , Dy Christopher J. , Goldwyn Elan M.
Published: May 2013

Accurate reduction of ankle syndesmosis following injury is essential to minimize tibiofibular diastasis and optimize patient outcomes. Although several radiographic parameters have been described in the coronal plane to assist in reduction, tibiofibular diastasis following syndesmotic injury often occurs in the sagittal plane, with the fibula displacing posterior relative to the tibia. A technique using lateral fluoroscopic assessment of the uninjured contralateral ankle as a comparison and guide for accurate syndesmotic reduction is described.
Skin Temperatures Generated Following Plaster Splint Application
Authors: Lindeque Bennie G.P. , Shuler Franklin D. , Bates Christopher M.
Published: May 2013

Heat is generated during the exothermic reaction associated with plaster splint application. The amount of heat generated is affected by the plaster thickness, dipping water temperature, and extremity elevation method. The authors assessed the effect of these variables on skin and plaster temperatures. Short-leg posterior splints were applied to noninjured extremities on a volunteer using 2 protocols. Following splint application, the splinted leg was elevated in 4 ways: on plastic-covered urethane pillows in cotton pillowcases, on cotton blankets, on ice packs (short-term cryotherapy) placed on top of cotton blankets, or with heel elevation to promote free air circulation. Skin and plaster temperatures were monitored at 1-minute intervals. The maximum skin temperature generated and the average time that skin temperature was 40°C or higher were recorded.
Femoral Deformity Planning: Intentional Placement of the Apex of Deformity
Authors: Fabricant Peter D. , Camara James M. , Rozbruch S. Robert
Published: May 2013

Traditionally, correction of femoral deformity has been performed with osteotomies through the center of rotation of angulation (CORA), but the CORA location is not always practical. If the osteotomy is created at a site adjacent to the CORA, an additional translation must be performed to accurately correct the deformity. However, at times, the ideal osteotomy site may require an unfeasible amount of translation. Multiple osteotomies may also be problematic, and when overcorrection of the mechanical axis is planned, the CORA method is not practical.

This article describes a novel method by which the surgeon may choose the location of the osteotomy regardless of the location of the CORA and may consolidate a multiapical deformity into a single corrective osteotomy. Furthermore, intentional mechanical axis overcorrection may be performed to unload knee joint arthritis. Simple, complex, and multiapical deformities may now be corrected via a single familiar surgical procedure, such as a distal femoral osteotomy, and the need for translation is eliminated.
Intramedullary Nailing Versus Locked Plate for Treating Supracondylar Periprosthetic Femur Fractures
Authors: Horneff John G. , Scolaro John A. , Jafari S. Mehdi , Mirza Amer , Parvizi Javad , Mehta Samir
Published: May 2013

The objective of this study was to compare retrograde intramedullary femoral nailing with supracondylar locked screw-plate fixation for the treatment of periprosthetic femur fractures following total knee arthroplasty. Time to union and full weight bearing were the primary study outcomes, with perioperative blood loss, need for transfusion, need for revision surgery, and infection being the secondary outcomes.

A retrospective review of 63 patients who sustained Rorabeck Type II periprosthetic femoral fractures was undertaken. Patients were pooled from 3 academic institutions between 2001 and 2009. Patients eligible for the study were identified from the electronic medical record using an IDX query of International Classification of Diseases 9 and Current Procedural Terminology codes for fixation of femur fracture with intramedullary implant or plate and screws. In the series, 35 patients were treated with intramedullary femoral nailing and 28 with a locked screw-plate. The 2 groups were compared for radiographic union at 6, 12, 24, and 36 weeks. At 36 weeks, radiographic union was significantly greater in the locked screw-plate group. Time to full weight bearing was not significantly different. A greater perioperative transfusion rate was observed in the locking plate group, but it also had an overall lower rate of reoperation, for any reason, compared with the intramedullary femoral nailing group. The results support the use of a laterally based locked plate in the treatment of Rorabeck type II distal femur periprosthetic fractures.
Surgical Management of 4-level Cervical Spondylotic Myelopathy
Authors: Shunzhi Yu , Zhonghai Li , Fengning Li , Zhi Chen , Tiesheng Hou
Published: May 2013

The optimal surgical approach for 4-level cervical spondylotic myelopathy is controversial. The authors compared the clinical outcomes, radiographic changes, and complications of 53 patients who underwent either discontinuous corpectomy and fusion (DCF) with reservation of the middle vertebra (n=29) or laminectomy and fusion (n=24). Neurological function was measured using Nurick’s grade and modified Japanese Orthopedic Association scores. The Neck Disability Index was recorded for neck-shoulder pain level evaluation. Patients’ satisfaction with the surgery was evaluated using the Short Form 36. Segmental lordosis was measured. Both groups demonstrated significantly improved Nurick’s grades and Japanese Orthopedic Association scores (
P
<.001), and the recovery rate was similar between the groups (59.86%±17.63% and 60.18%±12.01%, respectively). In terms of Neck Disability Index scores, Short Form 36 scores, and cervical lordosis measurements, no significant intergroup differences were found preoperatively. Mean postoperative Neck Disability Index scores were significantly lower in the DCF group (12.31±1.91) than in the laminectomy group (15.04±3.09;
P
=.000). Mean postoperative segmental lordosis was significantly higher in the DCF group (14.24±2.29) than in the laminectomy group (9.96±2.14;
P
=.001). The Short Form 36 scores significantly improved in both groups postoperatively (
P
<.01). Relative to the DCF group, the laminectomy group had a significantly longer operative time (192.25±33.47 vs 192.25±33.47 minutes, respectively;
P
<.01) and significantly more operative blood loss (455.41±140.46 vs 253.79±77.94 mL, respectively;
P
<.01). Discontinuous corpectomy and fusion with reservation of the middle vertebra is a safe and effective surgical treatment for 4-level cervical spondylotic myelopathy that results in significant functional improvement in most patients.
Hip Resurfacing and Conventional THA: Comparison of Acetabular Bone Stock Removal, Leg Length, and Offset
Authors: Brown Nicholas M. , Foran Jared R. H. , Della Valle Craig J.
Published: May 2013

The purpose of this study was to compare total hip arthroplasty (THA) and hip resurfacing arthroplasty (HRA) with regard to the amount of acetabular bone stock removed and the ability to restore leg length and offset. Anteroposterior pelvis radiographs of 153 consecutive THAs and 84 consecutive HRAs were compared. Excluded patients were those with prior hip surgery, those in which a best-fit circle could not be adequately matched to the femoral head, and those with preoperative radiographic findings that precluded consideration for HRA (ie, disease severity, deformity, leg-length discrepancy).

A significant difference was found between THA and HRA with regards to age and sex but not primary diagnosis. Relative differences in acetabular bone removal were compared using a ratio of acetabular implant diameter to preoperative ipsilateral femoral head diameter measured with a best-fit circle. The ratio of acetabular cup diameter to preoperative ipsilateral femoral head diameter was significantly greater following THA than following HRA, indicating relatively more acetabular bone removal in THA procedures. Mean leg-length discrepancy was significantly greater following THA than following HRA. Offset was increased to a greater extent following THA than following HRA. Overall, HRA was associated with relatively less acetabular bone stock removal and less alteration in leg length and offset than was THA.
Rehabilitation of Concrete Surfaces of Hydropower Engineering Structures Deteriorated by Soft Corrosion and Cavitation
Authors: Guzii Sergii , Hela Rudolf , Kyrychok Volodymyr
Published: May 2013

This paper covers the results of study of the reasons explaining why soft corrosion and cavitation-induced erosion take place on the surfaces of the hydropower engineering structures made from concrete. The study suggested defining basic characteristics related to a proper choice of mix design of the alkaline aluminosilicate coatings in terms of high adhesion, strength and resistance of the protective coating to exposure of water flow. The results of study showed that during a period under review (6 months) the developed coatings had a coefficient of resistance from 1.03 to 1.09 and could provide a reliable protection of the concrete from being leached.
Concrete Structures Restoration from the Fire Safety Point of View
Authors: Bradáčová Isabela , Kučera Petr
Published: May 2013

The need of concrete structures restoration in order to ensure their fire resistance can, in engineering practice, occur for reasons of damage to the structure by fire (spalling of concrete cover layer) or by the failure to cover the load-bearing structure during construction. The paper is devoted to the evaluation of the structure cover of the evaluated structure, the determination of temperature distribution in the structure with consideration to the choice of probable fire scenario, subsequent determination of critical temperature of the structure and the optimization of possible methods of the restoration of damaged or wrongly made constructions.
Lightweight Artificial Aggregate Based on Fly Ash for New Rehabilitation Materials
Authors: Sokol Pavel , Drochytka Rostislav , Černý Vit , Helanová Ester
Published: May 2013

During rehabilitation work are often strict requirements on the use of high quality lightweight materials, including aggregate. Due the constantly increasing social pressure on the optimal use of secondary raw materials is therefore most appropriate to exploit the potential of fly ash as mineral residue from the combustion of ground coal in power plants. Especially filter fly ash has proven to be an adequate substitute for traditional materials in the past. This article deals with the evaluation of physical and mechanical properties of cold-consolidated pellets based on conventional and fluidized fly ash with various cement addition.
Development of Materials Based on Flax for Thermal Insulation and Thermal Rehabilitation of Structures
Authors: Zach Jiří , Hroudová Jitka , Žižková Nikol
Published: May 2013

Thermal restoration of building constructions presents a complex of measures during renovation and life prolongation of buildings. It is a solution including restoration of bearing parts of the construction, solutions of moisture questions and the thermal insulation and new surface treatments of the construction. After application of the thermal insulation total energy intensity for heating and cooling is reduced and the thermal comfort inside insulated object is improved. Nowadays at application of thermal insulating systems a huge amount of insulants produced from non-renewable materials (EPS, PUR) is needed or the production of these is energy demanding (rock wool). Some of them, namely foam-plastic insulating materials are not compatible with original walling materials and after its application the diffusion flow is frequently limited in direction to exterior. The paper describes possibilities of production of insulants from flax waste and use of such insulating materials in the field of exterior heat insulating materials for existing objects.
Polymer-Modified Cement Composites with Increased Resistance to Elevated Temperatures
Authors: Bydžovský Jiří , Dufka Ámos , Melichar Tomáš
Published: May 2013

The paper informs on partial results of the research focused on improvement of resistance of cement composites towards actuation of high temperatures invoked by formation of fire. Specifically it is an optimisation of cement composites with use of alternative raw material resources. These cement composites are primarily designed for reconstructions of reinforced concrete constructions. Basic characteristics were tested with specimens exposed in laboratory conditions to an ambient characterized with increased temperatures simulating fire in real construction.
Development of Flooring Materials with Cellular Waste
Authors: Tumova Eva , Drochytka Rostislav
Published: May 2013

In the development of floor structures new building materials, additives, fillers and secondary raw materials of various properties are increasingly used. It is possible to develop new types of materials with different mechanical properties. Lightweight construction materials are the essential element for industrial floors lightening and thereby for reduce of their weight. This is especially beneficial for multi-storey buildings.
Strengthening of Masonry Walls with GFRP Straps – Testing and Application
Authors: Galic Josip , Kisicek Tomislav , Galic Martina
Published: May 2013

This paper describes the results of testing of unstrengthened and strengthened masonry walls subjected to horizontal in-plane load. Three kinds of specimens were tested: unstrengthened walls, walls strengthened with horizontal and walls strengthened with diagonal glass fiber straps. For unstrengthened walls and those strengthened with horizontal straps, a numerical simulation was performed. Software called MASA was used for this analysis. This software uses three dimensional non-linear numerical analysis of structure, made of quasi-brittle material, which is described with a microplane model. The results of numerical analysis very well described the behavior of unstrengthened and strengthened walls. In this paper, the application of such kind of strengthening, on rehabilitation of the existing masonry structure, Villa Kallina, in Zagreb, Croatia, was presented.
The Evaluation of Modifications to Glued Joints Utilizing Epoxy-Based Adhesive for Structural Timber Bonding
Authors: Vanerek Jan , Benešová Anna , Ráheľ Jozef , Sťahel Pavel
Published: May 2013

The behavior of two types of modifications to glued joints utilizing epoxy resin-based adhesive was examined in a manner specified by the EN 302 standard using adherent beech wood specimens. The investigation was focused on the improvement of glued joint strength and adhesive properties. The first type of modification involved reinforcement of the epoxy-based adhesive with scattered polypropylene fibers with the aim of enhancing the tensile shear strength of the assembly. The other type of glued joint modification was the electrical discharge plasma treatment of the adherend surface. This technique for treating the surfaces of materials enables the greater spreading of liquids due to the increase in surface wettability it provides. Relevant characteristics of the test specimen – tensile shear strength and wood failure - were tested in order to analyze the behavior of the thus-modified epoxy-based adhesive-glued joints.
Investigation of the Causes of Colour Inconsistency in the Facades of Vrchotovy Janovice Castle
Authors: Dufka Ámos , Rovnaníková Pavla , Drochytka Rostislav
Published: May 2013

The paper deals with the causes of pronounced colour inconsistency in the facades of Vrchotovy Janovice Castle. The original stone Gothic fortress has undergone a number of reconstructions, the last one taking place in the mid 19th century when the castle acquired its current neo-Gothic, romantic look. At the beginning of the second half of the 20th century the sporadic maintenance of the castle led to a decline in facade quality and the eventual restoration was very insensitive. Major restoration work was carried out on the facades in 2006 but once this was complete, the renewed facades started to show marked colour inconsistency. This paper analyses the causes of these defects with regard to the technological processes applied and sets out possible steps that can be taken to eliminate them.
Advanced, Thermal Insulation Materials Suitable for Insulation and Repair of Buildings
Authors: Hroudová Jitka , Zach Jiří , Hela Rudolf , Korjenic Azra
Published: May 2013

The need of quality materials for thermal insulation and restoration of building constructions is without question an up-to-date subject. Considering the growing trend in the field of reduction of building construction energy intensity and reduction of CO2 production a general assumption at development of new thermal insulating plasters is the reduction of thermal conductivity and also reduction of density in mature conditions which results in general saving of raw materials necessary for production of 1m3 of applied plaster. Aim of the paper is to acquaint readers with results of research and development of "advanced" thermal insulating plasters obtained within the cooperation of Brno Technology University and Vienna Technical University. Main object of research works was a development of plasters that would show a very good ratio of thermal insulating and mechanical properties, low density, high durability and resistance to humidity and salt influences mainly in case of its possible applications within reconstructions of existing building objects with higher moisture content.
Impact of the Chemical Injection Method on the Dispersion of the Injected Agents in Masonry
Authors: Nenadálová Šárka , Balík Lukáš , Kolisko Jiří , Klečka Tomáš
Published: May 2013

Chemical injection of masonry is a very widely-used method for providing supplementary water-proofing of historic masonry. Like all branches of the construction industry, chemical injection of masonry is under pressure to achieve greater performance and speed together with maximum efficiency. Current norms and standards permit both pressure injection and non-pressure injection. Are these methods comparable in efficiency, or should we expect differing effects A pilot experiment on model masonry pillars has been carried out at the Klokner Institute. This paper summarises the results of our experiments.
Efficiency Analysis of Materials Used for Mechanical Methods for Damp Masonry Rehabilitation
Authors: Mizerová Lenka , Smolka Radim
Published: May 2013

The issue of rehabilitation of buildings due to the effects of soil and atmospheric humidity is very difficult and in the field of present civil engineering it creates an independent and highly specialized discipline. The paper deals with laboratory determination of the efficiency of the mechanical methods for rehabilitation of damp brick masonry against the effect of ground capillary moisture. The assessed materials of mechanical undercut masonry are bitumen waterproofing and waterproofing membranes and also mechanically hammered in waterproofing metal sheet made of high-quality stainless steel. The comparison was made not only between particular materials, but also with reference samples without previous waterproofing.
Green Management Analysis of Construction Projects Based on Full Life-Cycle
Authors: Gao Hong , Li Qiang , Lv Guo
Published: May 2013

In China, green management of a construction project’s full life-cycle is an essential step the construction industry has to take towards achieving sustainable development. This paper outlines the implementation of green management based on the contents of a construction project. It discusses green management over the entire life-cycle of the project from design, construction, use to removal phase. Finally, the paper concludes how to assure the implementatation of green management of construction projects through establishing environmental quality assessment and evaluation systems.
Low Carbon Based Structural Design Method in Super Tall Buildings
Authors: Zhao Xin , Fang Shuo
Published: May 2013

Many super tall buildings are built up in China in recent years. The concept of low carbon based design has aroused much focus nowadays. There are few researches that combine structural design of super tall buildings with life cycle based low carbon design. Due to its huge quantity material and energy assumption, the super tall buildings exert great impact on the environment. In this study, an innovative new life cycle model is proposed for assess and optimize the life cycle environmental cost of super tall buildings, in which the space distribution of the building materials is considered besides the time dimension. A benchmark super tall building is established in this study to illustrate the application of the proposed new life cycle model. According to the case study results, a conclusion is drawn that a remarkable difference would be made in carbon emissions if low carbon based structural design method could be applied.
The Sun-Shading Technologies of the Existing Traditional Dwellings in China
Authors: Sun Li Ping
Published: May 2013

Shading space is an important characteristic of China's traditional architecture. The traditional dwellings in China are taken as the research object. On the basis of the statement of the classification and function of building shading, this paper focuses on the various shading methods such as eaves shading, function space shading, windows shading, courtyard shading, green shading and building mutual shading in the building layout.
Development and Evaluation of SHGC Measurement System for Cooling Energy Saving in Buildings
Authors: Kang Jae Sik , Kim Tae Jung , Choi Gyeong Seok , Lee Seung Eon
Published: May 2013

The purpose of this study is to develop the measurement system for SHGC that has the biggest effect on the cooling energy saving in buildings and prove the validity of the measurement result through the experiment using the device. In this study, solar simulator using artificial light source, external environment chamber that can control the external environmental condition and calorimetric chamber that can measure the amount of irradiance coming indoors by using heat flow meter were developed. In this study, it is considered to be possible to measure the SHGC of high performance glass, shading device, heat insulation film
Achieving the Net Zero Energy Target in Northern Italy: Lessons Learned from an Existing Passivhaus with Earth-to-Air Heat Exchanger
Authors: Carlucci Salvatore , Zangheri Paolo , Pagliano Lorenzo
Published: May 2013

The recast of the European Directive on Energy Performance of Buildings introduces the concept of nearly Zero Energy Building. To obtain a practical interpretation of this building concept, it is necessary to clarify two main issues: (i) how it is possible to select a reliable and agreed upon concept of “zero energy”; (ii) which technological features might be used to reach that target. In order to test the design of a nearly Zero Energy Building in the South of Europe, we present as case study an Italian Passivhaus located in the Po Valley that has been monitored for 18 months and analyzed through dynamic simulations of calibrated models. In this paper we present a selection of the result of the monitoring and simulation phases regarding the contribution (in terms of reduction of the indoor operative temperatures) of Earth-to-Air Heat Exchangers and natural ventilation strategies to meet different summer thermal comfort targets and consequently to avoid the installation of an active cooling system.
Study on the New Green Technology in Protection and Renovation of Historical Buildings’ Structure
Authors: Yu Hong Xia , Yan Li
Published: May 2013

This article summarizes the new green technology according to precedent researches on the building structure safety of historical building protection, the earthquake resistance appraisal, the structure reinforcement and modification. This article also emphasizes that historical buildings must be protected following with necessary reinforcement and reconstruction by choosing suitable new technology and be given the new value in use.
Research on Green Building Technology and Design - Take I. M. Pei’s Architectural Design Works for Example
Authors: Guo Li Qun , Guo Yan Qun
Published: May 2013

These years, more and more people hanker for Green Building. This tendency makes so many scholars and architects study on Green Building technology and Green Building materials. This article mainly discusses three aspects as follow. The first one is the necessity of Green Building technology and design. The second one is the misunderstanding of Green Building’s concept. The third one is the trait of I. M. Pei’s architectural design works.
Evaluation on the Energy Performance of PAS Wall Applying Vacuum Insulation
Authors: Choi Bo Hye , Choi Gyeong Seok , Kang Jae Sik , Lee Seung Eon
Published: May 2013

This study evaluates the insulation performance of the PAS so as to analyze the exterior insulation system, PAS(Panel Approach System), which is fixed to the structure by conducting a mock-up test and then calculates the linear thermal transmittance of the interior insulation and PAS-applied areas through a 3-dimensional steady state heat transfer analysis so as to conduct a comparison analysis of heat performance on the interior insulation system in thermal bridge areas. According to the results of the mock-up test conducted to evaluate the insulation performance of the PAS, the thermal transmittance value measured 0.15W/㎡K which shows outstanding insulation performance when compared to the Korean outer wall standard of apartment buildings that is 0.27~0.36W/㎡K. Moreover, as a result of calculating the linear thermal transmittance of the PAS in contrast to the interior insulation system through a heat transfer analysis of thermal bridge areas, the interior insulation measured 0.851W/mK, and 0.029W/mK when the PAS was applied. Thus, the insulation performance in thermal bridge areas was reduced by 96.6% in contrast to the interior insulation when the PAS was applied.
Performance Evaluation of Dry Double Floor-System Using Recycled Materials
Authors: Choi Hyun Jung , Kim Kyoung Woo , Yeon Jun Oh , Yang Kwan Seop , Kim Kyung Ho
Published: May 2013

Typical wet floor systems applied in most Korean housing units require refurbishing as they have a shorter lifespan than buildings. Construction waste, yielded by such refurbishing, can cause social problems such as environmental issues. In order to reduce such problems, a dry double floor system had been developed with the use of recycled materials. In this study, we evaluated performances of a developed double floor system, such as impact sound and radiant heat. As a result, floor impact sound was around 40 dB for light-weight types and around 48 dB for heavy-weight types, respectively. Moreover, radiant heat generated from the double floor system increased by approximately 28% compared with one of the existing Korean wet-floor heater type systems. Eventually, other evaluations were performed for items including environmental harm as required by the Korean building code, and the results showed that the developed dry floor system met all applicable Korean standards.
Study on Temporary Residence Development by Applying the Modular Construction
Authors: Wang Woo Chul , Song Young Hak , Lim Seok Ho
Published: May 2013

Many nations are developing temporary residence to be used in case of residence damage owing to natural disasters. This study is to compensate planning and operational defects of national temporary residences and to suggest a Prototype plan that meets the characteristics of temporary residence. Thus, a research on the actual condition of national temporary residences was conducted and problems were derived based on results. The spatial performance of temporary residences based on the minimum residence standard was reflected and construction methods that satisfy characteristics of temporary residences were considered so as to plan Korean-type temporary residences that maximize extendibility and variability.
Material Perception - Experience Design of Construction Material
Authors: Chen Xiao Fei , Xiong Jing Jing
Published: May 2013

Since the development of modern architecture design, the architect has become increasingly mature in space design, and construction materials has been one of the concerned important elements for architectural design, presentation property of construction material attracts more and more attention and shows rich connotation at the experience level. Therefore, refocusing and interpretation of the construction materials are undoubtedly an important idea to explore the study of ¡°spatial experience¡±. This paper through focuses on perceptual experience of the material and people¡¯s perception towards materials as research objects, studies how to better apply materials so as to gain attributed space. Finally, from the point of view of phenomenology of perception, the paper discusses how to use perceptual characteristic of material to shape the sense of the place.
Study on the Ultimate Limit State of the Curvature for Circular Section Reinforced Concrete Bridge Pier
Authors: Li Huai Lei , Huang Guo Yong
Published: May 2013

The ultimate limit state of the curvature for circular section reinforced concrete bridge pier was studied from the uncertainty of the deformation capacity. This article firstly uses the bridge pier with the diameter of 1.0m as the benchmark pier to study the relations between the ultimate limit state of the dimensionless yield, service and damage control curvature and the axial compression ratio, longitudinal reinforcement ratio and stirrup ratio. Results have shown that axial compression ratio is the main factor influencing the average value at the ultimate limit state of dimensionless yield and service horizontal curvature, while the axial compression ratio and stirrup ratio are main factors influencing the average value at the ultimate limit state of dimensionless damage control horizontal curvature. Then this article built the approximate formula for the calculation of diameter adjustment coefficient for the piers with other sections and diameters corresponding to the ductility at different ultimate limit states by means of regression analysis.
Reusing Plastic Bottles in Energy-Saving Design and Construction
Authors: Khalili Mitra , Amindeldar Sanaz , Mashhadibagher Moakhar Houriye
Published: May 2013

This paper investigates the use of irresolvable and permanent garbage in environment to build an energy saving wall in cold and hot climatic conditions. The wall is mainly constructed from plastic bottles which provide lightness. The bottles, filled with water to store solar energy, are confined between two walls and able to provide wall stability. Transparent twin wall poly carbonate sheets have been selected as the external surface in order to let the bottles receive solar energy. The inner layer is opaque and fire resistant. A tarpaulin with a reflective inner face is used to prevent heat loss during cold and heat conditions. As the empirical results of the built sample (45 * 65 cm) indicate, in cold season, the wall stores the solar energy during the day and transfers the heat indoors (by conduction) at nights, when the tarpaulin covers the exterior. In hot season, the tarpaulin protects the wall from sunlight during the day. At night the wall transfers the heat outdoors in the absence of the tarpaulin. A comparison of the alternative wall with similar kinds of contemporary construction walls addresses it considerably light.
Analysis on the Optical Performances of Window Film in Korea
Authors: Kang Jae Sik , Jang Min Seon , Choi Gyeong Seok
Published: May 2013

Recently, high efforts have been exerted all over the world to reduce energy used in buildings and to prevent environmental pollution. However, despite the fact that windows on buildings cause the greatest amount of heat energy loss, the area of windows on buildings is increasing due to the preference of high buildings, increasing demand of comfort, extended balcony based on the maximum use of indoor area, view, lighting, etc. The increase in window area is causing a major social issue, as the cooling load in summer season increased significantly due to the solar heat gain. The Window Film maximally permits the penetration ratio of visible light inflow and blocks UV and infrared rays. In the summer time, it blocks the inflow of solar energy and in the winter time the warm indoor temperature is maintained to enhance heating efficiency. Consequently, this study will examine the current recognition standards of window films within and outside the nation and analyze the insulation performance and the cooling load reduction effects of window films distributed in the nation so as to develop a recognition standard for high-efficiency constructional window films.
Research on Rheological Properties of Warm Mix Asphalt Binders
Authors: Zou You Quan
Published: May 2013

Abstract. Warm mix asphalt (WMA) has been gaining increasing popularity in recent years due to energy savings and environmental benefits. Warm mix asphalt reduces the production temperatures (mixing and compaction) while maintains the advantages of hot mix asphalt (HMA). It is becoming an attractive paving material. Therefore, it is important to understand the rheological behavior of asphalt binders changes with temperature and proportion of the additives. In this study, rheological properties of one commonly used binder PG 70-28 were evaluated, with and without additives (Sasobit® and Aspha-Min®) as the warm asphalt additives, by means of conventional tests as well as dynamic mechanical analysis using Dynamic Shearing Rheometer (DSR).The rheological test included viscosity, temperature sweep and frequency sweep.
Research on Energy Saving Method of Traditional House in Northwest Shanxi
Authors: Fu Lei , Shi Qian Fei
Published: May 2013

Traditional dwellings in Shanxi province have a poor insulation performance. This paper focused on improving their winter indoor temperature. The measurement is using cement expanded perlite mortar and polyethylene plastic foam board as thermal insulation materials to transform outer walls, in combination with Autodesk Ecotect Analysis software to calculate temperature variation. Result shows that our transform method can increase interior temperature effectively.
On Improving the Competitiveness of Real Estate Enterprises Based on the Concept of Lean Construction
Authors: Yang Jia Li , Peng Ying , Chen Yu Shui
Published: May 2013

With the rapid development of economic globalization, the competition of the real estate enterprises is increasingly fiercer, and the real estate market changes from seller's market to buyer's market; moreover, requests for technology, scale, function of the construction project, etc. is being more advanced, all of which put forward higher demand to real estate enterprises. Under this background, real estate enterprises must set up a more scientific and more normative management procedure to improve their competition; moreover, Lean Construction is an advanced construction system. It can improve the efficiency of construction, and realize enterprises' own goals finally. It is proved that Lean Construction is advanced and feasibility and it will be the direction of the construction development in the future. This essay defines Lean Construction and introduces some background information of Chinese real estate market at first, then puts forward three measures for improving the competitiveness of real estate enterprise; last but not least, this essay studies on the improvement of enterprise competitiveness based on the idea of Lean Construction from three aspects.
Preservation and Reuse of the Ancient Xiaoyi City
Authors: Shen Rui , Wang Jin Ping
Published: May 2013

Abstract. The ancient Xiaoyi city is a vital sample of ancient counties in China with a history of thousands of years and a higher historical and cultural value. After a wide reading of literatures and field investigation, this paper gives a brief introduction to the history and value of the ancient Xiaoyi city, and then points out measures for the preservation and reuse of the ancient city, trying to inspire the protection and reuse of the famous historical and cultural cities.
The Need for Affordable Urban Settlement in Tebet - Jakarta Indonesia: Challenge and Opportunity
Authors: Budi Arlius Putra
Published: May 2013

The affordable settlement is a problem that faced by several countries, especially on its urban including Jakarta. The rapid growth of people in Jakarta will increase the number of settlement need. The more demand of land for settlement, the higher the price of land will be. This paper aims to extract relevant information about urban settlement issues regarding the need of the affordable urban settlement in Jakarta and make a recommendation to solve it. We collected some data on urban issues which is based on the characteristics of urban settlement in Jakarta. In this case, not all people can afford to have proper settlement. Only those who could afford will have a good house. The government built ‘rusun’ towers to provide an appropriate settlement for lower income families. However, there are many issues that must be addressed in order to make towers as a sustainable settlement. The issues that relevant to be discussed is whether the ‘rusun’ unit has a comfortable space for household, for social interaction between the inhabitants, for safety and health standards. ‘Rusun’ is one solution of settlement for the poor in Jakarta from Government. By applying an integrated affordable urban settlement in Jakarta and adapted to the existing inhabitants needs, we are optimistic that the need of affordable settlement for the poor can be resolved.
Modern Urban Ecological Waterscape Planning and Design
Authors: Pan Feng
Published: May 2013

Modern urban ecological waterscape is essentially about planning waterfront construction as well as ecology solicitude in a rapidly changing environment in Chinese city. The primary goal of this research is attempting to reconnect the relationship between waterscape and environment, which has been broken up in the past urbanization. The method used in this study is known as the ecological planning and design, and the author suggests that the ecological waterscape planning should include the aspects of water environment restoring, old buildings reusing, different levels water purifying system and traditional culture exploring, etc. It is concluded that the correct judgment and optional operation of these factors will enhance the function of urban waterscape as well as improve city living environment in general.