bluuebunny/crossref_metadata_2025 huggingface dataset:
Knowledge Extraction from a Computational Consumer Model Based on Questionnaire Data Observed in Retail Service
Authors: Ishigaki Tsukasa , Motomura Yoichi , Dohi Masako , Kouchi Makiko , Mochimaru Masaaki
Published: May 2012

In service industries, matching the level of demand of the consumer and the level of service of the provider is important because it requires the service provider to have knowledge of consumer-related factors. Therefore, an intelligent model of the consumer is needed to estimate such factors because they cannot be observed directly by the service provider. This paper describes a method for computational modeling of the consumer by understanding his or her behavior based on datasets observed in real services. The proposed method constructs a probabilistic structure model by integrating questionnaire data and a Bayesian network, which incorporates nonlinear and non-Gaussian variables as conditional probabilities. The proposed method is applied to an analysis of the requested function from customers regarding the continued use of an item of interest. The authors obtained useful knowledge for function design and marketing from the constructed model by a simulation and sensitivity analysis.
RT-Llama
Authors: Panahi Mark , Nie Weiran , Lin Kwei-Jay
Published: May 2012

Service-oriented architectures (SOA) are being adopted in a variety of industries. Some of them must support real-time activities. In this paper, the authors present RT-Llama, a novel architecture for real-time SOA to support predictability in business processes. Upon receiving a user-requested process and deadline, our proposed architecture can reserve resources in advance for each service in the process to ensure it meets its end-to-end deadline. The architecture contains global resource management and business process composition components. They also create a real-time enterprise middleware that manages utilization of local resources by using efficient data structures and handles service requests via reserved CPU bandwidth. They demonstrate that RT-Llama’s reservation components are both effective and adaptable to dynamic real-time environments.
SLIM
Authors: Cugola Gianpaolo , Margara Alessandro
Published: May 2012

One of the main obstacles to the adoption of Wireless Sensor Networks (WSNs) outside the research community is the lack of high level mechanisms to easily program them. This problem affects distributed applications in general, and it has been replied by the Software Engineering community, which recently embraced Service Oriented Programming (SOP) as a powerful abstraction to ease development of distributed applications in traditional networking scenarios. In this paper, the authors move from these two observations to propose SLIM: a middleware to support service oriented programming in mobile Wireless Sensor and Actuator Networks (WSANs). The presence of actuators into the network, and the capability of SLIM to support efficient multicast invocation within an advanced protocol explicitly tailored to mobile scenarios, make it a good candidate to ease development of complex monitoring and controlling applications. In the paper the authors describe SLIM in detail and show how its performance easily exceeds traditional approaches to service invocation in mobile ad-hoc networks.
Capacity-Driven Web Services
Authors: Tata Samir , Maamar Zakaria , Belaïd Djamel , Boukadi Khouloud
Published: May 2012

This paper presents the concepts, definitions, issues, and solutions that revolve around the adoption of capacity-driven Web services. Because of the intrinsic characteristics of these Web services compared to regular, mono-capacity Web services, they are examined in a different way and across four steps denoted by description, discovery, composition, and enactment. Implemented as operations to execute at run-time, the capacities that empower a Web service are selected with respect to requirements put on this Web service such as data quality and network bandwidth. In addition, this paper reports on first the experiments that were conducted to demonstrate the feasibility of capacity-driven Web services, and also the research opportunities that will be pursued in the future.
Systems Dynamics Approach to Analyzing Spectrum Management Policies for Mobile Broadband Services in India
Authors: Sridhar Varadharajan , Casey Thomas , Hämmäinen Heikki
Published: May 2012

Demand for wireless data and Internet services are expected to grow exponentially, in advanced and emerging markets in the near future. While advanced countries have often used centralized planning and coordination methodology to forecast and allocate the associated spectrum blocks to wireless operators for meeting demand, often its ad-hoc in emerging markets dictated by market forces. In this paper, the authors construct a casual model to represent the different variables that affect spectrum management practices and highlight possible paths forward. Using the causal model structure, they hypothesize that emerging countries with their unique market structure and legacy of spectrum management are better suited to create active secondary markets. The authors cite early market indicators in India such as the adoption of national roaming by the wireless broadband operators and the use of multi-SIM handsets by subscribers that tend to support our hypothesis.
Computer Aided Planning for Wireless Systems
Authors: Umar Amjad
Published: May 2012

Information and communication technology (ICT) managers in the modern enterprises face a bewildering array of decisions regarding planning of new systems, integration of new systems with existing ones, securing the ICT assets, and administrating the resulting complex ICT systems. The rapid introduction of wireless systems (mobile computing and wireless communications) in the business and government settings is further exasperating the situation, particularly in the developing countries. A Computer Aided Planner (Planner), part of the UN eNabler Toolset, has been developed to quickly and effectively produce detailed strategic plans for a wide range of egovernment services with particular attention to wireless systems. This paper presents a high level overview of this effort.
A Critical Systems Metamethodology for Problem Situation Structuring
Authors: Petrovic Slavica P.
Published: May 2012

The increasing complexity and diversity of management problem situations in organizations, as well as the increasing variety of theories, methodologies, methods, techniques, and models that can be employed in problem situation structuring and solving, must be considered as relevant aspects of management process in contemporary circumstances. Creative holism in management problem situations in organizations is enabled by means of Critical Systems Thinking (CST) as well as Critical Systems Practice (CSP), as the resulting metamethodology. In other words, through CST and CSP, it can be significantly contributed to the management of the increasing diversity and variety of methodologies, methods, techniques, and models, with the aim of improving the management of problem situations in organizations.
Parametric Optimization of Linear and Non-Linear Models via Parallel Computing to Enhance Web-Spatial DSS Interactivity
Authors: Kremmydas D. , Petsakos A. , Rozakis S.
Published: May 2012

A web based Spatial Decision Support System (web SDSS) has been implemented in Thessaly, the most significant arable cropping region in Greece, to evaluate energy crop supply. The web SDSS uses an optimization module to support the decision process launching mathematical programming (MP) profit maximizing farm models. Energy to biomass raw material cost is provided in supply curve form incorporating physical land suitability for crops, farm structure, and Common Agricultural Policy (CAP) scenarios. To generate biomass supply curves, the optimization problem is parametrically solved for a number of steps within a price range determined by the user. The more advanced technique used to solve the MP model, the higher the delay of response to the user. In this paper, the authors examine how effectively the web SDSS response time can be reduced to the user requests using parallel solving of the corresponding optimization problem. The results are encouraging, since the total solution time drops significantly as the problem’s size increases, improving the users’ experience even when the underlying optimization models use advanced, time demanding modeling techniques. These statements are illustrated by comparing linear and non-linear agricultural sector models.
Using Business Intelligence for Operational Decision-Making in Call Centers
Authors: Kyper Eric , Douglas Michael , Blake Roger
Published: May 2012

This paper proposes an operational business intelligence system for call centers. Using data collected from a large U.S. insurance company, the authors demonstrate a decision tree based solution to help the company achieve excellence through improved service levels. The initial results from this study provide insight into the factors affecting this firm’s call center service levels, and the solution developed in this paper provides two distinct advantages to managers. First, it enables them to identify key factors and the role they play in determining service levels. Second, a sliding window approach is proposed which allows managers to see the effects of resource reallocation on service levels on an on-going basis.
Soluble Trem-like Transcript-1 Regulates Leukocyte Activation and Controls Microbial Sepsis
Authors: Derive Marc , Bouazza Youcef , Sennoun Nacira , Marchionni Sandra , Quigley Laura , Washington Valance , Massin Frédéric , Max Jean-Pierre , Ford Jill , Alauzet Corentine , Levy Bruno , McVicar Daniel W. , Gibot Sébastien
Published: May 2012

The triggering receptor expressed on myeloid cells (TREM)-1 plays a crucial role during the onset of sepsis by amplifying the host immune response. The TREM-like transcript-1 (TLT-1) belongs to the TREM family, is selectively expressed on activated platelets, and is known to facilitate platelet aggregation through binding to fibrinogen. In this study, we show that a soluble form of TLT-1 is implicated in the regulation of inflammation during sepsis by dampening leukocyte activation and modulating platelet-neutrophil crosstalk. A 17-aa sequence of the TLT-1 extracellular domain (LR17) is responsible for this activity through competition with the TREM-1 ligand. Whereas early or late LR17 treatment of septic mice improves survival, treml-1−/− animals are highly susceptible to polymicrobial infection. The present findings identify platelet-derived soluble TLT-1 as a potent endogenous regulator of sepsis-associated inflammation and open new therapeutic perspectives. We anticipate soluble TLT-1 to be important in regulating leukocyte activation during other noninfectious inflammatory disorders.
Runx1 Deficiency in CD4+ T Cells Causes Fatal Autoimmune Inflammatory Lung Disease Due to Spontaneous Hyperactivation of Cells
Authors: Wong Won Fen , Kohu Kazuyoshi , Nakamura Akira , Ebina Masahito , Kikuchi Toshiaki , Tazawa Ryushi , Tanaka Keisuke , Kon Shunsuke , Funaki Tomo , Sugahara-Tobinai Akiko , Looi Chung Yeng , Endo Shota , Funayama Ryo , Kurokawa Mineo , Habu Sonoko , Ishii Naoto , Fukumoto Manabu , Nakata Koh , Takai Toshiyuki , Satake Masanobu
Published: May 2012

The Runx1 transcription factor is abundantly expressed in naive T cells but rapidly downregulated in activated T cells, suggesting that it plays an important role in a naive stage. In the current study, Runx1−/−Bcl2tg mice harboring Runx1-deleted CD4+ T cells developed a fatal autoimmune lung disease. CD4+ T cells from these mice were spontaneously activated, preferentially homed to the lung, and expressed various cytokines, including IL-17 and IL-21. Among these, the deregulation of IL-21 transcription was likely to be associated with Runx binding sites located in an IL-21 intron. IL-17 produced in Runx1-deleted cells mobilized innate immune responses, such as those promoted by neutrophils and monocytes, whereas IL-21 triggered humoral responses, such as plasma cells. Thus, at an initial stage, peribronchovascular regions in the lung were infiltrated by CD4+ lymphocytes, whereas at a terminal stage, interstitial regions were massively occupied by immune cells, and alveolar spaces were filled with granular exudates that resembled pulmonary alveolar proteinosis in humans. Mice suffered from respiratory failure, as well as systemic inflammatory responses. Our data indicate that Runx1 plays an essential role in repressing the transcription of cytokine genes in naive CD4+ T cells and, thereby, maintains cell quiescence.
The Expiration of the Ethanol Tax Credit: An Analysis of Costs and Benefits
Authors: Diggs Amy
Published: May 2012

The Volumetric Ethanol Excise Tax Credit expired on December 31, 2011. This cost benefit analysis concludes that without the tax credit, the net benefits will be $168.1 billion in net present value from 2012 to 2022. The total costs will be $116.8 billion, primarily imposed upon ethanol producers and farmers. The benefits, realized through improved environmental conditions and stabilized food prices, will save society a total of $284.9 billion. Alternative considerations beyond the scope of this assessment are presented, such as the role of innovation and foreign alternative fuel imports. These considerations will play a significant role in future outcomes from the expiration of the tax credit.
The Relevance of Regionalism in Washington, DC
Authors: Weakley Sarah
Published: May 2012

The Washington, DC Metropolitan region is representative of a larger trend in regions across the country: an increase in economic segregation and inequality that negatively affects both the rich and poor. Regionalist scholars propose that taking a region-wide policy approach in areas such as taxation, transportation, and housing can buttress place-based initiatives to create a more sustainable solution. This paper describes current inequality dynamics in the DC Metropolitan region, discusses current approaches to poverty reduction, and then recommends Regionalist policies as viable alternatives. Regionalist policies and successes provide relevant lessons for the DC Metropolitan region in particular as ways to alleviate the problems of inequality.
Deadlines and Comprehensive Regulations
Authors: Porat Jonathan
Published: May 2012

There is a large push by the United States government to improve the effectiveness and responsiveness of the US regulatory regime. Established proposals aim to improve US regulatory policy by making it easier for the public to use judicial review as a tool to respond to overly burdensome regulations. Much of the debate over the effectiveness of these proposals focuses on more visible regulatory outcomes. Unfortunately, the effect of judicial review on regulatory development is often overlooked. If judicial review promotes less comprehensive regulatory analysis through the presence of inflexible judicial deadlines, then regulatory reform promoting judicial review ironically may not prevent negative regulatory outcomes. This paper empirically measures whether regulations with judicial deadlines are developed less comprehensively than regulations with laxer statutory deadlines. This paper will determine how the differences in the development of regulations with judicial deadlines should influence the way that the government analyzes proposals for regulatory reform.
Influence of the Grander Technology in the Physical Properties of the Self-Etch Adhesive System
Authors: Barcellos Daphne Câmara , Torres Carlos Rocha Gomes , de Paiva Gonçalves Sergio Eduardo , Balducci Ivan , da Silva Tânia Mara , Matias Diogo Toledo , Lima Huhtala Maria Filomena Rocha
Published: May 2012

Aim

The objective of this study was to evaluate the influence of the Grander technology in reducing the surface tension and contact angle of self-etch adhesive system.

Materials and methods

Distilled water and Xeno III self-etch adhesive system (Dentsply) were modified by physical contact with the flexible unit Grander system to revitalize water, for 48 hours, resulting in four groups: Group CW-distilled water under normal conditions; Group CA-Xeno III adhesive system under normal conditions; Group GW-distilled water system modified by the Grander system; Group GA-Xeno III adhesive system modified by the Grander system. Surface tension and contact angle of the adhesive system and water in normal and Grandermodified conditions was measured with a goniometer. ANOVA and Tukey test were used to analyze the results (5%).

Results and conclusion

For surface tension, ANOVA showed p < 0.05, what indicated significant differences between the groups. The mean values (D/cm) for the groups were: CW-72.4 a; GW-69.45 b; GA: 31.17 c; CA-29.98 c. The results showed a significant reduction of surface tension for distilled water modified by Grander system. Grander technology did not interfere in the surface tension and contact angle physical properties of the Xeno III self-etch adhesive system.

Clinical significance

Grander technology is a method that revitalizes water by physical spatial restructuring of its molecules. The modify of an adhesive system, also a liquid with an aqueous solvent, can provide a reduction in surface tension and contact angle, increasing its wetness capacity and therefore ensuring a greater diffusibility.

How to cite this article

de Paiva Gonçalves SE, Matias DT, Barcellos DC, Lima Huhtala MFR, da Silva TM, Balducci I, Torres CRG. Influence of the Grander Technology in the Physical Properties of the Self-Etch Adhesive System. World J Dent 2012;3(1):1-5.
Patient Attendance for Emergency Care in a Brazilian Dental School
Authors: Torres Carlos Rocha Gomes , Gomes Ana Paula Martins , Balducci Ivan , Tiradentes Naiara , dos Santos Ilana Souza Serafim , de Vasconcelos Rafaela Andrade , Kubo Claudio Hideki , Almeida Janete Dias
Published: May 2012

Objective

The objective of this study was to analyze the profile of patients attending the Emergency Dental Clinic at São José dos Campos Dental School, UNESP-São Paulo State University, between 2006 and 2010, evaluating the gender, ethnicity, age, diagnosis and treatment performed for resolution of the cases.

Materials and methods

A total of 600 dental records were analyzed by descriptive statistics, Fisher and Chi-square tests at a significance level of 5%. The dental records included information on the patients’ name, gender, age, ethnicity, phone number, date of attendance, diagnosis and treatment performed. The case history addressed the chief complaint, medical and dental history of the patient. The clinical evaluation comprised tests, such as visual examination of the intraoral hard and soft tissues, tooth percussion, palpation, probing, pulp sensitivity test and radiographic examination. The diagnosis and treatment for each case were established based on the case history and clinical tests.

Results

There was predominance of female gender (59.17%) and patients aged 20 to 39 years (49.67%). Most procedures were performed to solve endodontic emergencies (37.5%), followed by placement of dressings (10.6%), tooth extraction (8.9%), periodontal problems (4.6%) and cementation of provisional crowns or definitive dentures (4.5%).

Conclusion

Dental caries and its consequences were the main factors involved in the emergency attendances. There is a constant need of health promotion, considering that the patients searched for restorative treatments without the necessary emphasis on prevention. Additional studies are needed to determine strategies for decreasing the use of emergency services for nonemergency dental problems.

Clinical relevance

The diagnosis and treatment of dental emergencies are challenging. If inadequately performed, they may cause difficulties or even failures in pain relief, worsening or delaying the continuation of treatment planning and accomplishment.

How to cite this article

Tiradentes N, dos Santos ISS, de Vasconcelos RA, Balducci I, Kubo CH, Torres CRG, Almeida JD, Gomes APM. Patient Attendance for Emergency Care in a Brazilian Dental School. World J Dent 2012;3(1):11-17.

Note

This study was revised and approved by Local Ethics Committee (070/2006-PH/CEP).
Oral Health Status, Hygiene Habits and Treatment Needs among Elderly Brazilians: A Cross-sectional Study
Authors: Consani Rafael Leonardo Xediek , dos Santos Mateus Bertolini Fernandes , Montenegro Fernando Luiz Brunetti , Arcas Silvana Papaléo , Hiratsuka Marcel , Marchini Leonardo
Published: May 2012

Purpose

Oral health status seems to play an important role in the quality of life of the elderly, the aim of this study was to verify oral hygiene habits, oral health status and treatment needs of a sample of elderly Brazilians in the city of São Paulo.

Materials and methods

A convenience sample of 167 individuals underwent interviews and clinical examinations.

Results

A total of 107 patients (64.1%) reported brushing their teeth 3 or more times per day, 42.5% floss their teeth, and 24.0% uses mouthwash. The average time since the patients’ last visit to a dentist was 2.2 years (±4.6). Only 24.6% of the teeth were periodontally healthy, and the most prevalent pathological condition was gingival recession (46.1%). Eighty-two percent use some type of dental prosthesis. A total of 35.3% of the sample required periodontal treatment, 32.9% needed direct restorations, 39.5% removable partial dentures and 23.4% complete dentures. Positive associations were found between the current condition of oral health and flossing (p = 0.004) and between the current condition and the use of interdental brushing (p = 0.009), and an inverse association with the time elapsed since the last dental appointment (p = 0.016).

Conclusion

The oral health status in this sample was better than observed in previous Brazilian surveys, but dental treatment needs remain high, mainly regarding prosthetic needs.

How to cite this article

dos Santos MBF, Montenegro FLB, Arcas SP, Hiratsuka M, Consani RLX, Marchini L. Oral Health Status, Hygiene Habits and Treatment Needs among Elderly Brazilians: A Cross-sectional Study. World J Dent 2012;3(1): 22-25.
Effect of Self-etchant pH on Shear Bond Strength of Orthodontic Brackets: An in vitro Study
Authors: Shivalinga BM , Jyothikiran H , Goyal Amit
Published: May 2012

Aims

To determine the effect of self-etchant pH on shear bond strength of orthodontic brackets; to compare the shear bond strengths of brackets bonded with three SEPs and brackets bonded with conventional etch, rinse, bond method and to find the brackets/adhesive failure mode.

Materials and methods

One hundred and twenty premolar teeth were cleaned, mounted, and randomly divided into four groups of 30 samples each- Transbond XT conventional etch and bond system (control), Adper SE Plus SEP (3M ESPE) with a pH of 0.9 to 1.0, Transbond Plus SEP (3M Unitek) with a pH of about 1.0 and Clearfil SE Bond SEP (Kuraray America) with a pH of around 2.0. All teeth were bonded with Transbond XT paste (3M Unitek). The teeth were debonded within half an hour after initial bonding by using a universal testing machine. The residual adhesive on each tooth was evaluated. ANOVA was used to compare the shear bond strength (SBS) of the three groups, and the Chi-square test was used to compare the adhesive remnant index (ARI) scores for the three groups.

Results

ANOVA indicated significant differences between the groups. Clearfil attained the SBS (6.5 ± 0.6689 MPa) closest to the control group, whereas Adper inspite of being the most aggressive recorded the lowest SBS (5.7 ± 0.5695 MPa). Transbond self-etching primer achieved a mean SBS of 6.1 ± 0.6211 MPa. However, all the three SEPs recorded SBS which was significantly less than that of Transbond conventional etch, rinse and bond system (11.8027 ± 0.8059 MPa). The comparisons of the ARI scores between the three groups indicated that bracket failure mode was significantly different between the three groups (p < 0.05).

Conclusion

These findings show that factors other than pH, such as the ability of the bonding adhesive to form a chemical bond to enamel and the strength of the bonding adhesive itself, significantly influence the SBS of orthodontic brackets.

How to cite this article

Goyal A, Jyothikiran H, Shivalinga BM. Effect of Self-etchant pH on Shear Bond Strength of Orthodontic Brackets: An in vitro Study. World J Dent 2012;3(1):41-49.
Behavior Assessment Amid Children Aged 0 to 3 Years in Dental Institution
Authors: Kiran K , Dwivedi Swati , Vashisth Pallavi , Bhatia Virag
Published: May 2012

The study was conducted to evaluate the behavior of children in age group of 0 to 3 years in dental institution. Sample sizes of 432 were selected randomly for the study, between age group of 0 to 3 years. They were divided into six groups according to their age: Group I—0 to 6 months; Group II—7 to 12 months; Group III—13 to 18 months; Group IV—19 to 24 months; Group V—25 to 30 months; Group VI—31 to 36 months. The behavior of the child was observed while his/her entrance in the dental department and during the first four clinical appointments with a clinical examination and oral hygiene therapy. The child was classified as collaborative behavior (CB) and noncollaborative behavior (NCB). Statistical analysis was performed using Pearson's Chi-square test (p < 0.005). Result showed that babies from 0 to 6 months showed a favorable behavior; babies from 7 to 30 months showed unfavorable behavior; and babies from 31 to 36 months showed no statistically significant difference between the percentage of collaborative and noncollaborative behavior.

How to cite this article

Kiran K, Dwivedi S, Vashisth P, Bhatia V. Behavior Assessment Amid Children Aged 0 to 3 Years in Dental Institution. World J Dent 2012;3(1):50-54.
Immunofluorescence in Oral Pathology—Part II: Pathology and Immunofluorescent Patterns in Subepidermal Immunobullous Disorders
Authors: Premalatha BR , Rao Roopa S , Mysorekar Vijaya
Published: May 2012

The immunobullous disorders are a group of autoimmune diseases in which components of the epidermis and basement membrane zone are targeted, resulting in the formation of cutaneous and mucosal blisters. Based on the level of blistering, the autoimmune blistering diseases may be subdivided into intraepidermal and subepidermal. An exhaustive list of immunobullous disorders is beyond the scope of this review, but those involving oral mucosa are taken into consideration.

One major group namely the subepidermal immunobullous diseases which includes bullous pemphigoid (BP), mucosal pemphigoid [cicatricial pemphigoid (CP) or (MMP)], epidermolysis bullosa acquisita (EBA) linear IgA bullous disease (LABD) are discussed in this section. The diagnosis of these diseases requires clinicopathological correlation; immunofluorescence methods provide a useful adjunct to light microscopy. These methods entail the use of fluorescein-linked antibodies to immunoglobulins, complement components, or other proteins either in the skin biopsy or sera. In continuation with part I, the immunofluorescence patterns in the above listed immunobullous disorders are reviewed in detail with a summary of pathogenesis and characteristic histopathological findings.

How to cite this article

Rao RS, Premalatha BR, Mysorekar V. Immunofluorescence in Oral Pathology—Part II: Pathology and Immunofluorescent Patterns in Subepidermal Immunobullous Disorders. World J Dent 2012;3(1):68-73.
Distal Extension Removable Partial Denture with Resilient Attachment Connected to an Anterior Fixed Implant-Supported Prosthesis: A Clinical Report
Authors: Zavanelli Adriana Cristina , Mazaro José Vitor Quinelli , Zavanelli Recardo Alexandre , Guilherme Adérico Santana , Magalhães Jaqueline Barbosa , de Carvalho Cardoso Leandro
Published: May 2012

Background

Considering the limited qualitative and quantitative bone in the posterior arch, this modality of prosthetic treatment could provide a positive emotional factor reestablished by immovability of the anterior fixed implant-supported segment.

Objective

This clinical report demonstrates the possibility of achieving positive results with a removable partial denture connected to an implant-supported fixed prosthesis associated to an extra resilient attachment.

Clinical significance

In cases of posterior mandibular and maxilla atrophy added to the patients desire against the bone graft, this kind of prosthetic treatment has an important place as an alternative.

How to cite this article

Zavanelli RA, Mazaro JVQ, Guilherme AS, Magalhães JB, de Carvalho Cardoso L, Zavanelli AC. Distal Extension Removable Partial Denture with Resilient Attachment Connected to an Anterior Fixed Implant-Supported Prosthesis: A Clinical Report. World J Dent 2012;3(1):87-90.
Tooth Fragment Reattachment: An Esthetic, Biological Restoration
Authors: Kararia Nitin , Chaudhary Ajay , Kararia Vandana
Published: May 2012

Coronal fractures of the anterior teeth are a common form of dental trauma. If the original tooth fragment is retained following fracture, reattachment of the fractured fragment to the remaining tooth can provide better and long-lasting esthetics, improved function, a positive psychological response and is a faster and less complicated procedure. This paper reports on two coronal tooth fracture cases that were successfully treated using adhesive reattachment technique.

How to cite this article

Kararia N, Chaudhary A, Kararia V. Tooth Fragment Reattachment: An Esthetic, Biological Restoration. World J Dent 2012;3(1):91-94.
Root Canal Treatment of a Mandibular Second Molar with a Reverse Anatomy
Authors: Majety Kishore Kumar , Halebathi Ramesh Giriyappa , Gandhi Bhavana
Published: May 2012

The complex anatomy of the root canal system takes up many configurations and variations are not uncommon. A clinician should be aware of the normal, so as to recognize these aberrations in the anatomy. Successful root canal therapy is achieved by thorough shaping and cleaning of the root canal system followed by obturation of the radicular space. The aim of the present article is to describe a case of a mandibular second molar with an unusual anatomy of having a single mesial canal and two distal canals which is in reverse to usually seen, encountered during routine endodontic treatment. The clinician should always keep in mind that anatomic aberrations can occur in any tooth and the recognition of these is achieved by thorough examination of the internal anatomy of the tooth and its radiographs.

How to cite this article

Giriyappa RH, Majety KK, Gandhi B. Root Canal Treatment of a Mandibular Second Molar with a Reverse Anatomy. World J Dent 2012;3(1):97-99.
Application of Hounsfield Unit to evaluate Prognosis of a Rehabilitated Tooth with Grade Three Mobility
Authors: Hegde Nidharsh D , Shrivastava Deepali
Published: May 2012

The relationship between pulpal and periodontal disease was first described by Simring and Goldberg in 1964. Pathological agents pass between the pulp and periodontium, thereby creating the endoperio lesion. Lateral canals play an important role in the spread of infection from pulp to periodontium. This article reports a case of a 38-year-old patient with a combined endoperio lesion. Bone density is a key factor in predicting bone healing. Application of Hounsfield unit to determine the healing pattern of bone.

How to cite this article

Hegde MN, Hegde ND, Shrivastava D. Application of Hounsfield Unit to evaluate Prognosis of a Rehabilitated Tooth with Grade Three Mobility. World J Dent 2012;3(1):109-111.
Dentin Bonding Agents-II Recent Trials
Authors: Kakar Surbhi , Nagar Rohit
Published: May 2012

Most modern adhesive systems are superior to their predecessors, especially in terms of retention that is no longer the main cause of premature clinical failure. Recent adhesives also appear less sensitive to substrate and other clinical covariables. Various recent trials have been conducted on various issues like the antibacterial properties of self-ethching dental adhesive system (which are effective against bacteria that invade through microleakage at the resin dentin interphase), shear bond strength of composite resin to dentin, using newer dentin bonding agents, nanoleakege expression in bonded dentin and next generation bonding agents.

This paper gives the insight to the various recent trials on dental adhesive systems.

How to cite this article

Kakar S, Goswami M, Nagar R. Dentin Bonding Agents-II Recent Trials. World J Dent 2012;3(1): 115-118.
Preparation and Use of Fibrin Composite as a Hard Tissue Graft Material: An Animal Study
Authors: Kandasamy Baburajan , Padmanabhan TV , Sridhar R
Published: May 2012

As the saying goes-without the wall or base, no treasure of art can be incorporated Alveolar ridge forms the basic infrastructure for a successful denture. But resorption is inevitable sequelae of extraction.

  Various graft materials have been used to improve the alveolar ridge. Hydroxyapatite is the most commonly used bone graft material. The main disadvantage of hydroxyapatite is the particle displacement leading to inadequate ridge form.

  Fibrin and collagen have been used as sealants in many surgeries. So it is prudent to combine fibrillar collagen and hydroxyapatite and utilize this material as an effective graft.

  The objective of this study is to study the usefulness of fibrin-fibrillar collagen hydroxyapatite composite as a graft material for the repair of experimentally created bony defects.
Occlusal Plane Analyzer: A Customized Device for Determining the Occlusal Plane
Authors: Gupta Rubina
Published: May 2012

Since times immemorial, dentists have faced the challenge of providing accord between function and esthetics. The occlusal plane, lost in patients rendered edentulous, should be relocated if complete dentures are to be esthetically and functionally satisfactory.

  Changes in the plane of occlusion modify the physical and functional relationship of the oral musculature leading to an alteration in function, comfort and also the esthetic value.

  Considering the importance of the accurate establishment of the location and the effect of the inclination of the established occlusal plane on function, esthetics and speech, a method to conform it to the occlusal plane that existed in the natural teeth seems necessary.

  This paper describes a custom-made instrument to check for the parallelism of ala-tragus line to the occlusal plane and also to check for the parallelism of occlusal plane to interpupillary line.
Personal Identification using Complete Dentures
Authors: Banerjee Saurav , Gupta Tapas , Banerjee Ardhendu
Published: May 2012

Personal identification is an indispensable requirement for forensic and medicolegal investigations or, in case of an accident, loss of memory, states of unconsciousness being inadvertently misplaced on admission to a hospital or in identifying bodies of those who have died in a calamity. Positive identification through labeled dentures plays a key role in the above-mentioned scenario. The importance of denture identification has long been accredited by the dental profession and various denture identification systems have been reported in the literature. This clinical report highlights a technique of denture identification wherein a used IOPA lead foil with patient details engraved is incorporated within the heat polymerized resin during the processing of the denture.
Análise da relação entre investimentos socioambientais e a inclusão de empresas no Índice de Sustentabilidade Empresarial - (ISE) da BM&FBovespa
Authors: Machado Márcio André Veras , Macedo Marcelo Álvaro da Silva , Machado Márcia Reis , De Siqueira José Ricardo Maia
Published: May 2012

Este artigo objetiva verificar a relação entre investimentos socioambientais e a inclusão das empresas no Índice de Sustentabilidade Empresarial (ISE) da BM&FBOVESPA, por meio da aplicação de regressão logística. Para tanto, foram analisadas informações relativas aos investimentos ambientais e sociais internos e externos, retirados dos balanços sociais das empresas sob análise. A amostra foi formada por empresas elegíveis para compor a carteira ISE, no período de dezembro de 2009 a dezembro de 2010. De acordo com os resultados obtidos, pode-se concluir que existe relação entre os investimentos socioambientais e o ingresso das empresas na carteira ISE da BM&FBOVESPA. Isso demonstrou que os investimentos das empresas realizados e evidenciados em questões socioambientais são entendidos como indício de comprometimento real com a responsabilidade social e sustentabilidade e não simplesmente uma forma de prestação de contas dos recursos aplicados. Quanto às variáveis utilizadas, investimentos sociais internos (II), externos (IE) e ambientais (IA), observou-se que IE é a melhor proxy para explicar essa relação, ou seja, os resultados sugerem que empresas que investem recursos em prol da comunidade, seja voluntariamente ou por meio dos tributos, o que é ou pelo menos deveria ser um recurso aplicado na sociedade, tem mais chances de entrar na composição da carteira ISE.
A elaboração de cenários na gestão estratégica das organizações: um estudo bibliográfico
Authors: Da Silva Antônio Thiago Benedete , Spers Renata Giovinazzo , Wright James Terence Coulter
Published: May 2012

Para auxiliar a elaboração de estratégia em ambientes complexos e marcados pela incerteza uma técnica possível é a elaboração de cenários. Este trabalho tem por objetivo levantar e analisar a elaboração de cenários para fins de formulação de estratégia com o uso de dados secundários coletados em pesquisa bibliográfica nos principais eventos e periódicos de administração do Brasil (eventos da ANPAD – Enanpad, 3 Es, Enadi, Enapg, Simpósio, Eneo e EMA – e principais revistas nacionais listadas no Qualis Capes – Revista de Administração de Empresas (FGV), RAUSP, Read, Brazilian Business Review, BASE (Unisinos), Revista de Administração Contemporânea, Revista de Administração do Mackenzie e REGE USP). A pesquisa resultou na identificação de 24 trabalhos, os quais, quando analisados, mostraram que a ferramenta é importante para a gestão estratégica em ambientes turbulentos, e revelaram a necessidade de se expandir as questões de pesquisa concernentes à elaboração de cenários na prática, de modo a levantar a problemática dos praticantes do campo e contribuir para o aprimoramento da utilização de cenários na gestão estratégica das organizações.
Competências gerenciais requeridas em empresas familiares: um olhar feminino
Authors: Brito Lydia Maria Pinto , Pinto Leone Nilda Maria de Clodoaldo Guerra
Published: May 2012

O estudo teve como objetivo identificar o perfil de competência das gestoras líderes de empresas familiares. O referencial fundamentou-se em estudos sobre mulheres no comando de empresas familiares e gestão da competência. A pesquisa é caracterizada como exploratória, foi estudada de forma quantitativa, elaborada por meio de uma pesquisa de campo. A amostra foi por acessibilidade e endereçada, especificamente, às empresas familiares sediadas em Natal-RN. O instrumento de coleta de dados foi um questionário. Os dados foram tratados pela estatística descritiva. Os resultados apontam para um Perfil de Competência que indica a percepção da importância da capacitação profissional e gerencial; e de valorização do desenvolvimento pessoal e da ética. Na dimensão do conhecimento confirmase a disposição das pesquisadas pela busca de conhecimento técnico específico do setor de atuação. Na dimensão habilidade identifica-se a necessidade de melhorar a capacidade de criticar e sintetizar dados e informações sobre processos e pessoas para tomada de decisões. A atitude das gestoras em relação à ética apontou ênfase no sentido do respeito pelo outro, honestidade e justiça nas decisões e coerência entre discurso e prática. Conclui-se esperando que os resultados permitam um melhor gerenciamento de processos de capacitação e desenvolvimento da carreira das gestoras.
Práticas discursivas de trabalhadores terceirizados e construções sociais da identidade de exclusão
Authors: Brito Valéria da Glória Pereira , Marra Adriana Ventola , Carrieri Alexandre de Pádua
Published: May 2012

Este artigo tem por objetivo investigar a construção da identidade dos trabalhadores terceirizados que prestam serviços em ambientes produtivos diversificados. Parte-se do pressuposto de que a identidade do sujeito individual ou coletivo é socialmente construída em dado contexto sócio-histórico, estando sujeita a contínuas transformações oriundas da relação dialética entre objetividade e subjetividade. Adotase uma postura teórico-metodológica interpretativa buscando compreenderpor meio de treze entrevistas semiestruturadas, à luz da Análise do Discurso, como os trabalhadores de uma empresa prestadora de serviços de controle de qualidade de Belo Horizonte constroem sua identidade. Percebe-se no discurso um forte desejo dos trabalhadores de fazer parte do quadro de trabalhadores efetivos da empresa contratante e a presença de várias representações negativas sobre o trabalho terceirizado, já que eles se sentem discriminados e excluídos pelos trabalhadores efetivos. A relação dos trabalhadores terceirizados com os trabalhadores efetivos pode ser vista como um campo de forças em que cada sujeito busca exercer o poder e demarcar politicamente o seu espaço.
Formação docente e educação a distância: um estudo do cenário educativo de Santa Catarina
Authors: Moré Rafael Pereira Ocampo , Vieira Grace Tavares , De Araújo Márcia Santiago , Costa Alexandre Marino
Published: May 2012

A formação docente é fator preponderante na luta pela qualidade na educação do Brasil. A partir da promulgação da Lei de Diretrizes e Bases (LDB), em 1996, tem-se o desafio de formar novos professores e, para isso, verifica-se na Educação a Distância (EaD) uma excelente alternativa de acesso à  educação superior pública. A EaD é definida como proposta educativa que utiliza tecnologias para diminuir a distância entre as Instituições de Ensino Superior (IES) e os alunos, e é nesse contexto que surge a Universidade Aberta do Brasil (UAB), que atualmente é a principal política de formação docente por meio da EaD. O objetivo do trabalho é apresentar as políticas de formação docente inseridas no estado de Santa Catarina, sendo detalhada a UAB no cenário brasileiro e catarinense e analisada a inserção de TICs nas escolas catarinense como mecanismo de promoção e estímulo ao uso da EaD como proposta educativa.
Recursos compartilhados: uma aplicação da visão baseada em recursos em um condomínio tecnológico no Paraná
Authors: Bulgacov Sergio , Arrebola Marcelo Correia , Gomel Márcia May
Published: May 2012

Este trabalho é proveniente de uma pesquisa realizada em um condomínio de empresas de base tecnológica e tem por objetivo analisar de que forma os recursos compartilhados entre as empresas no condomínio contribuem para a geração de vantagem competitiva sustentável para as suas empresas. A pesquisa descritiva em forma de estudo de caso utilizou dados secundários e primários para a análise, os quais revelaram que não são apenas as diferenças dos recursos e as capacidades individuais das empresas os determinantes da competitividade, mas também a existência de um ambiente e de relações de alianças colaborativas no uso dos recursos é parte da natureza competitiva de suas empresas. Os empresários das empresas participantes do condomínio foram unânimes em destacar que as suas empresas são mais beneficiadas em suas capacidades competitivas pelos recursos compartilhados, entre as demais empresas, do que prejudicadas pela concorrência interna possivelmente existente.
Critical Thinking As Influenced By Learning Style
Authors: Torres Robert M. , Cano Jamie
Published: May 2012

The development of critical thinking skills in students at all age levels has long been a national concern. As such, teaching faculty in all disciplines and at all levels of education shared a common goal: to develop in students in the complex mental operations that will allow them to be successful in the classroom as well as their future careers. A review of education literature reveals several factors that have been found to influence cognitive development. Learning style was one such factor. This study sought to investigate the influence learning style had on critical thinking abilities of students enrolled in a college of agriculture. A random sample of senior students was selected for the study. The Developing Cognitive Abilities Test and the Group Embedded Figures Test were used to gather data on students critical thinking abilities and learning style. Using multiple linear regression, 9 percent of the variance in students' critical thinking was uniquely accounted for by learning style after controlling personal characteristics. Recommendations are offered based on the results and for future research.
The distribution of snow black carbon observed in the Arctic and compared to the GISS-PUCCINI model
Authors: Dou T. , Xiao C. , Shindell D. T. , Liu J. , Ming J. , Qin D.
Published: May 2012

Abstract. In this study, we focus on the latest NASA GISS composition-climate model to evaluate its performance in simulating the spatial distribution of snow BC (sBC) in the Arctic relative to present observations. The radiative forcing due to BC deposition to the Arctic snow and sea ice is also estimated. Two sets of model simulations have been done in the analysis, where meteorology is linearly relaxed towards National Centers for Environmental Prediction (NCEP) and towards NASA Modern Era Reanalysis for Research and Applications (MERRA) reanalyses. Results indicate that both of the modeled sBC are in good agreement with present-day observations in and around the Arctic Ocean, except for underestimation at a few sites in the Russian Arctic. The overall ratio of observed to modeled sBC is 1.1. The result from the NCEP run is slightly better than that from the MERRA run. This suggests that the latest GISS-E2-PUCCINI model does not have significant biases in its simulated spatial distribution of BC deposition to the Arctic, and underestimation of biomass burning emissions in Northern Eurasia is preliminarily considered to be the main cause of the simulation biases in the Russian Arctic. The combination of observations and modeling provides a comprehensive distribution of sBC over the Arctic. On the basis of this distribution, we estimate the decrease in snow and sea ice albedo and the resulting radiative forcing. It is concluded that the averaged decrease in snow and sea ice albedo in and around the Arctic Ocean (66–90° N) due to BC deposition is 0.4–0.6% from spring 2007–2009, leading to regional surface radiative forcings of 0.7 W m−2, 1.1 W m−2 and 1.0 W m−2, respectively in spring 2007, 2008 and 2009.
Global anthropogenic methane emissions 2005–2030: technical mitigation potentials and costs
Authors: Höglund-Isaksson L.
Published: May 2012

Abstract. This paper presents estimates of current and future global anthropogenic methane emissions, their technical mitigation potential and associated costs for the period 2005 to 2030. The analysis uses the GAINS model framework to estimate emissions, mitigation potentials and costs for all major sources of anthropogenic methane for 83 countries/regions, which are aggregated to produce global estimates. Global anthropogenic methane emissions are estimated at 323 Mt methane in 2005, with an expected increase to 414 Mt methane in 2030. Major uncertainty sources in emission estimates are identified and discussed. Mitigation costs are estimated defining two different cost perspectives; the social planner cost perspective and the private investor cost perspective.