bluuebunny/crossref_metadata_2025_split huggingface dataset:
Estrés, síntomas psicopatológicos y riesgo de clicking en estudiantes universitarios: un estudio de casos y controles
Authors: Mafla Ana Cristina , Timarán Delgado Carlos Alberto , Bastidas Eraso Carlos Eduardo , Zambrano Muñoz Diana Carolina 
Published: May 2015

Introducción: la evidencia científica sugiere que el estrés y los síntomas psicológicosdesempeñan un papel importante en las enfermedades. El objetivo del estudio fue investigar el clicking en individuos con estrés y diferentes síntomas psicopatológicos. Métodos: se compararon 30 estudiantes universitarios que experimentaron clicking con 60 voluntarios sanos como controles. Los participantes recibieron el pss-10 y scl-90-r en versiones españolas. Se calcularon los odds ratios (or) e ic al 95% para determinar el riesgo de estas variables para la presencia de clicking mediante regresión logística. Resultados: el estrés fue débilmente asociado con la ocurrencia de clicking(or = 1,35, ic al 95%: 0,46-3,95, p = 0,57). Ser un individuo con estrés y depresión (or = 2,92, ic al 95%: 0,61-14,0, p = 0,16) y ansiedad (or = 2,80, ic al 95%: 0,69-11,31, p = 0,13) pudieran aumentar el riesgo de presentar clicking. Además, la depresión (or = 7,00, ic al 95%: 0,66-74,28, p = 0,07) y la ansiedad (or = 4,90, ic al 95%: 0,78-30,80, p = 0,07) ajustadas por síntomas de dolor parecen importantes para unos sujetos. El riesgo de clicking en estudiantes con comorbilidad de depresión y ansiedad y estrés fue más alto (or = 2,11, ic al 95%: 0,40-11,15, p = 0,37). Por otra parte, existió un riesgo diferente cuando esta comorbilidad, estrés y el síntoma de dolor estuvieron presentes(or= 4,30, ic al 95%: 0,35-51,90, p = 0,21).Conclusión: la depresión, la ansiedad, el estrés y el dolor pudieran ser factores predictivos para el desarrollo de tdm como el clicking. En este sentido, la medición de esas condiciones debe ser una prioridad en estos pacientes.
Online Peer-to-Peer Support for Young People With Mental Health Problems: A Systematic Review
Authors: Ali Kathina , Farrer Louise , Gulliver Amelia , Griffiths Kathleen M 
Published: May 2015

Background
Adolescence and early adulthood are critical periods for the development of mental disorders. Online peer-to-peer communication is popular among young people and may improve mental health by providing social support. Previous systematic reviews have targeted Internet support groups for adults with mental health problems, including depression. However, there have been no systematic reviews examining the effectiveness of online peer-to-peer support in improving the mental health of adolescents and young adults.

Objective
The aim of this review was to systematically identify available evidence for the effectiveness of online peer-to peer support for young people with mental health problems.

Methods
The PubMed, PsycInfo, and Cochrane databases were searched using keywords and Medical Subject Headings (MeSH) terms. Retrieved abstracts (n=3934) were double screened and coded. Studies were included if they (1) investigated an online peer-to-peer interaction, (2) the interaction discussed topics related to mental health, (3) the age range of the sample was between 12 to 25 years, and (4) the study evaluated the effectiveness of the peer-to-peer interaction.

Results
Six studies satisfied the inclusion criteria for the current review. The studies targeted a range of mental health problems including depression and anxiety (n=2), general psychological problems (n=1), eating disorders (n=1), and substance use (tobacco) (n=2). The majority of studies investigated Internet support groups (n=4), and the remaining studies focused on virtual reality chat sessions (n=2). In almost all studies (n=5), the peer support intervention was moderated by health professionals, researchers or consumers. Studies employed a range of study designs including randomized controlled trials (n=3), pre-post studies (n=2) and one randomized trial. Overall, two of the randomized controlled trials were associated with a significant positive outcome in comparison to the control group at post-intervention. In the remaining four studies, peer-to-peer support was not found to be effective.

Conclusions
This systematic review identified an overall lack of high-quality studies examining online peer-to-peer support for young people. Given that peer support is frequently used as an adjunct to Internet interventions for a variety of mental health conditions, there is an urgent need to determine the effectiveness of peer support alone as an active intervention.
Prevention of root resorption in hypofunctional teeth by occlusal function recovery
Authors: Hayashi Akiko , Hayashi Hidetaka , Kawata Toshitsugu 
Published: May 2015

ABSTRACT

Objective:
To clarify whether occlusal hypofunction is one of the key determinants for root resorption during tooth movement and root resorption is prevented by its recovery.

Materials and Methods:
The rats were randomly divided into one control and two experimental groups: hypofunctional and recovery groups. In the hypofunctional group, an anterior metal cap and bite plate were attached to the maxillary and mandibular incisors to simulate occlusal hypofunction. In the recovery group, the appliances were removed 7 weeks after their use, and the rats were allowed to bite for 4 weeks after removal. At the age of 16 weeks, the upper first molars were moved and after 0, 7, 14, and 21 days, the maxillae were resected. The resorption area was quantified morphohistologically and tartrate-resistant acid phosphatase (TRAP)-positive cells on the root surface were counted. We also examined the expressions of receptor activator of nuclear factor-κB ligand (RANKL), macrophage-colony stimulating factor (M-CSF), and interleukin (IL)-8 immunohistochemically.

Results:
The amount of root resorption and the number of TRAP-positive cells were significantly greater in the hypofunctional group than in the control and recovery groups. Moreover, immunoreactivity for RANKL, M-CSF, and IL-8 was detected in the periodontal ligament and on the root surface in the hypofunctional group.

Conclusion:
Occlusal hypofunction is one of the critical factors for root resorption; however, root resorption may be prevented by recovery of occlusal function. (Angle Orthod. 0000;0:1–8.)
Accelerated tooth movement with piezocision and its periodontal-transversal effects in patients with Class II malocclusion
Authors: Aksakalli Sertac , Calik Berra , Kara Burcak , Ezirganli Seref 
Published: May 2015

ABSTRACT

Objective:
To compare the extent of canine distalization and the transversal changes, postdistalization gingival indices, and mobility scores between patients who were undergoing orthodontic treatment involving upper premolar extraction with (experimental group) or without piezocision.

Materials and Methods:
Twenty maxillary canines of 10 patients were evaluated with split mouth design. Pre- and postdistalization dental casts were prepared and scanned with an orthodontic scanner to compare the extent of distalization and transversal changes between the two groups. The pre- and postdistalization gingival indices and mobility scores were also calculated.

Results:
Three-dimensional analysis of the models revealed significant differences in tooth movement (lesser anchorage loss and greater canine distalization) between the experimental and control groups. Furthermore, the distalization time was shortened in the experimental group. There were no differences in the transversal changes, pre- and postdistalization gingival indices, or mobility scores between groups.

Conclusion:
Piezocision-assisted distalization accelerates tooth movement, decreases the anchorage loss for posterior teeth, and does not induce any maxillary transversal change. Moreover, piezocision does not have any adverse effects on periodontal health.
Three-dimensional effects of the mini-implant–anchored Forsus Fatigue Resistant Device: A randomized controlled trial
Authors: Elkordy Sherif A. , Abouelezz Amr M. , Salah Fayed Mona M. , Attia Khaled H. , Rahman Ishaq Ramy Abdul , Mostafa Yehya A. 
Published: May 2015

ABSTRACT

Objective:
To detect three-dimensionally the effects of using mini-implant anchorage with the Forsus Fatigue Resistant Device (FFRD).

Materials and Methods:
The sample comprised 43 skeletal Class II females with deficient mandibles. They were randomly allocated into three groups: 16 patients (13.25 ± 1.12 years) received FFRD alone (Forsus group), 15 subjects (13.07 ± 1.41 years) received FFRD and mini-implants (FMI group), and 12 subjects (12.71 ± 1.44 years) were in the untreated control group. Three-dimensional analyses of cone beam computed tomographic images were completed, and the data were statistically analyzed.

Results:
Class I relationship and overjet correction were achieved in 88% of the cases. None of the two treatment groups showed significant mandibular skeletal effects. In the FMI group, significant headgear effect, decrease in maxillary width, and increase in the lower facial height were noted. In the FMI group, retroclination of maxillary incisors and distalization of maxillary molars were significantly higher. Proclination and intrusion of mandibular incisors were significantly greater in the Forsus group.

Conclusions:
FFRD resulted in Class II correction mainly through dentoalveolar effects and with minimal skeletal effects. Utilization of mini-implant anchorage effectively reduced the unfavorable proclination and intrusion of mandibular incisors but did not produce additional skeletal effects.
High Blood Pressure and Its Association With Incident Diabetes Over 10 Years in the Korean Genome and Epidemiology Study (KoGES)
Authors: Cho Nam H. , Kim Kyoung Min , Choi Sung Hee , Park Kyong Soo , Jang Hak Chul , Kim Sung Soo , Sattar Naveed , Lim Soo 
Published: May 2015

OBJECTIVE
No prospective, community-based cohort studies have investigated the association between blood pressure and diabetes in Asian ethnicity. We investigated this issue in a 10-year prospective, community-based study of Koreans.

RESEARCH DESIGN AND METHODS
We studied whether high blood pressure was associated with the development of diabetes in a population-based cohort, where we sampled ∼5,000 random subjects each from rural and urban areas (age range 40–69 years) during 2001–2010. Among 10,038 subjects, 8,359 without diabetes at baseline were categorized into normal (n = 4,809), prehypertension (n = 2,141), stage 1 hypertension (n = 804), and stage 2 hypertension (n = 605) groups, according to their blood pressure readings of &lt;120/80 mmHg, 120–139/80–89 mmHg, 140–159/90‒99 mmHg, and ≥160/100 mmHg, respectively. The development of diabetes was defined as a fasting glucose concentration of ≥126 mg/dL or a postload glucose concentration of ≥200 mg/dL, based on a 75-g oral glucose tolerance test, or the use of antidiabetic medication.

RESULTS
During the 10-year follow-up period, diabetes developed in 1,195 subjects (14.3%). The incidence of diabetes increased from 11.1% in the normal group to 17.0% in the prehypertension group, 17.7% in the stage 1 hypertension group, and 25.8% in the stage 2 hypertension group (P &lt; 0.001). After adjusting for anthropometric factors; family history of diabetes; biochemical parameters including C-reactive protein, A1C, and fasting glucose and postload 2-h glucose levels; and the use of lipid-lowering medications, the hazard risks of diabetes development were 1.23 (95% CI 1.06–1.42), 1.26 (1.04–1.54), and 1.60 (1.30–1.96), respectively, in the prehypertension, stage 1 hypertension, and stage 2 hypertension groups.

CONCLUSIONS
Our findings indicate a grade association of baseline blood pressure with the development of diabetes in Korean individuals.
Application of the Taguchi method for the optimization of the strength of polyamide 6 composite hot plate welds
Authors: Ülker Aydın , Kocatüfek Umut Emrah , Sayer Sami , Yeni Çınar 
Published: May 2015

Abstract
The purpose of this study is to investigate the influence of the welding parameters in the hot plate welding process of polymer composites, polyamide 6 glass fiber reinforcement 15 wt.-%, by using the Taguchi method. Four welding parameters, namely the plate temperature, heating time, welding displacement and welding time, were optimized under the consideration of the joint strength. The Taguchi approach of the parameter design was used as a statistical procedure to set the optimal welding parameters. For hot plate welding of the specimens, the combination of process parameters based on three levels of the L9 orthogonal array was utilized. The signal to noise and the analysis of variance were employed to find the optimum levels and to indicate the impact of the welding parameters on joint strength by tensile tests of welded joints. It was shown that choosing 270 °C as plate temperature, 1.0 mm of weld displacement and 25 s of heating time, reveals an improved joint strength. For the optimized parameters it was verified that the welding time does not have a significant influence and the most effective factor on joint strength is the plate temperature. The weld displacement and heating time only slightly influenced the joint strength. A confirmation run was also performed to prove the effectiveness of the Taguchi method after determination of the optimum levels of the process parameters. The results showed that the joint strength was improved by about 27 % as compared to the initial welding parameters and the joint efficiency increased from 56 % to 71 %.
Influence of Al2O3 addition on microstructure and mechanical properties of 3YSZ-Al2O3 composites
Authors: Abden Md. Jaynul , Afroze Jannatul Dil , Gafur Md. Abdul , Chowdhury Faruque-Uz-Zaman 
Published: May 2015

Abstract
The effect of the amount of Al2O3 content on microstructure, tetragonal phase stability and mechanical properties of 3YSZ-Al2O3 composites are investigated in this study. The ceramic composites are obtained by means of uniaxial compacting at 210 MPa and green compacts are sintered at 1550 °C for 3 h in air. The monoclinic zirconia (m-ZrO2) phase has completely been transformed into tetragonal zirconia (t-ZrO2) phase with corresponding higher Al2O3 content. The t-ZrO2 grains induce transgranular fracture mode that has contribution in improvement of fracture toughness. The maximum flexural strength of 340 MPa, Vickers hardness value of 14.31 GPa and fracture toughness of 5.1 MPa × m1/2 in the composition containing 40 wt.-% Al2O3 is attributed to the microstructure with t-ZrO2 grains as inter- and intragranular particles in the Al2O3 grains, which makes it suitable for dental applications.
Dynamic behavior of stiffened plates under underwater shock loading
Authors: Helal Mahmoud M. K. , Elsayed Fathallah 
Published: May 2015

Abstract
A numerical investigation has been carried out to examine the behavior of stiffened steel plates subjected to different shock loads resulting from an underwater explosion (UNDEX). The aim of this work is to enhance the dynamic response to resist UNDEX and obtain the optimal configuration for stiffened plates to resist underwater shock loading. A non-linear dynamic numerical analysis of the underwater explosion phenomena associated with different geometrical stiffened steel plates is performed using the ABAQUS/Explicit finite element code. Special emphasis is focused on the evolution of mid-point displacements and velocity. Further investigations have been performed to study the effects of including material damping and the rate-dependent material properties at different shock loads. The results indicate that stiffeners configurations and shock loads affect greatly the overall performance of steel plates and are sensitive to the materials data. Also, the numerical results can be used to obtain design guidelines of floating structures to enhance resistance of underwater shock damage, since explosive tests are costly and dangerous.
Mechanical properties of conventionally and induction sintered Fe-based powder metal bushings
Authors: Çivi Can , Akpinar Göksan , Atik Enver 
Published: May 2015

Abstract
Mechanical properties of powder metal parts are directly related to the shape, distribution and the amount of pores. In this study, mechanical properties of induction sintered Fe based components were investigated dependent on the changing of sintering time and pore structures. For this purpose, compression tests were applied to sintered bushings and microstructural photographs were taken. The compression tests were accompanied by respective finite element analyses. The numerical values were compared to experimental results. It turned out that the micro-stress values were dependent on the amount and distribution of porosity.
Functional ANOVA investigation of the effects of friction welding parameters on the joint characteristics of aluminum based MMC to AISI 304 stainless steel
Authors: Balalan Zulkuf , Ozdemir Niyazi , Firat Emrah Hanifi , Caligulu Ugur 
Published: May 2015

Abstract
This study investigates the applicability of joining an aluminum matrix composite, reinforced with 5, 10, and 15 wt.-% of SiCp particles, to AISI 304 austenitic stainless steel by using friction welding technique. In this study, optical and electron microscopes, lap shear strength test, and microhardness measurements were used to assess the quality of bonding of Al-Cu-SiCp and AISI 304 austenitic stainless steel joints performed by using friction welding. The strength of the friction welded joints was significantly affected by process parameters (rotation speed, friction time, friction pressure, forging time and forging pressure). Additionally, lap shear and axial shortening test results were analyzed by using analysis of variance (ANOVA) with a confidence level of 95 % to find out presence of a statistically significant difference.
L’injonction au mariage
Authors: Salcedo Robledo Manuela 
Published: May 2015

Au cours de mon enquête qui porte sur les couples binationaux face à la politique d’immigration menée en France depuis une dizaine d’années, j’ai rencontré de nombreux couples de même sexe ou de sexe différent. Ces couples affrontent souvent divers obstacles et épreuves au moment du mariage/pacs ou de la demande de la carte de séjour pour le partenaire étranger. Depuis 2003 et l’arrivée de Nicolas Sarkozy au ministère de l’Intérieur puis à la Présidence, la politique d’immigration est devenue de plus en plus méfiante à l’égard de ces couples. Ils sont soupçonnés de ne pas être amoureux mais intéressés, de vouloir se marier uniquement pour les papiers. Or, les couples binationaux – formés par une personne de nationalité française ou européenne et une personne de nationalité hors de l’espace européen – sont obligés de se marier ou de se pacser s’ils souhaitent vivre ensemble en France et que le partenaire étranger en situation irrégulière soit régularisé. Autrement dit, la vie commune et le mariage ou le pacs donnent la possibilité de plein droit, en théorie 1 , à une carte de séjour « vie privée et familiale » qui permet à la fois de rester en France et d’y travailler. Le dispositif de soupçon, doublé de l’injonction au mariage et à la vie commune, fonctionne ainsi comme un régulateur à la fois du mariage (contrôler les « faux » mariages) et de la sexualité (l’institutionnalisation obligatoire des unions, suivant les normes de l’hétérosexualité reproductive). L’entretien qui va suivre nous plonge dans une trajectoire particulière mais par plusieurs aspects tout à fait ordinaires dans le parcours des couples binationaux. Avec son humour et son franc-parler, Anita nous transmet l’absurdité kafkaïenne de la situation qu’elle vit avec son compagnon.
Carrières déviantes. Stratégies et conséquences du choix d’une vie sans enfant
Authors: Debest Charlotte 
Published: May 2015

Les personnes qui font le choix de ne pas avoir d’enfant s’écartent de la norme du « faire famille » et interrogent la réception des normes de la parentalité et de sa place dans la trajectoire de vie des individus. En France, la pression sociale à concevoir est telle que ces trajectoires d’hommes et de femmes qui ne veulent pas avoir d’enfant, apparaissent finalement comme des « carrières déviantes », au sens de Howard Becker. Cependant les femmes restent davantage stigmatisées face à ce « non désir d’enfant » que les hommes.
Que deviennent les arts d’aimer avec le néolibéralisme ?
Authors: Achin Catherine , Roueff Olivier 
Published: May 2015

Michel Feher est philosophe, cofondateur des éditions Zone books et de l’association Cette France-là. Mouvements l’a interrogé sur l’histoire des critiques et apologies de la famille, en faisant un détour par la double généalogie des « conditions » et des « érotiques », soit des représentations partagées de la condition humaine et, sur ce fond, des problèmes que l’amour doit surmonter. L’entretien propose ainsi un bilan qui articule de manière inédite les travaux qu’il mène depuis les années 1990 sur les érotiques et depuis les années 2000 sur les « conditions ». Nous vous présentons ici 1 ses développements sur la période contemporaine. L’analyse de la condition néolibérale et de ses penchants à la quête du crédit et au partage des goûts, offre un éclairage indispensable pour qui se soucie de redéfinir une politique émancipatrice des liens d’intimité, d’intensité affective et de solidarité que la relation familiale semble désigner. Il ne s’agit rien de moins que de ne pas se tromper d’époque.
Une perspective interactionniste de la norme ISO 26000 comme vecteur d’apprentissage organisationnel - Le cas d’une PME du secteur de l’évènementiel
Authors: Paulus Krystel , Soparnot Richard 
Published: May 2015

Cet article a pour objectif de comprendre les conditions par lesquelles la norme Iso 26000 est source d’apprentissage. Mené dans le cadre d’une recherche intervention (David, 2000) au sein d’une PME du secteur de l’évènementiel, le processus d’apprentissage organisationnel de ce projet de normalisation est analysé au regard de la perspective interactionniste (Nonaka et Takeuchi, 1995 ; Nonaka et Konno, 1998). Trois conditions sont ainsi mises en évidence : la création d’un contexte organisationnel favorable articulé autour de déterminants stratégiques et opérationnels, la création d’espaces d’apprentissage spécifiques ainsi que la création d’une dynamique managériale. Notre recherche permet ici d’enrichir l’approche interactionniste développée par Nonaka et Takeuchi (1995).
Time delay and interface roughness estimations by GPR for pavement survey
Authors: Sun Meng , Pinel Nicolas , Le Bastard Cédric , Baltazart Vincent , Ihamouten Amine , Wang Yide 
Published: May 2015

ABSTRACTIn civil engineering, ground‐penetrating radar is widely used for road pavement surveys. In contrast to the existing literature, this paper takes account of the influence of interface roughness (surface and interlayer roughness) within the scope of data processing of radar signals. The rigorous electromagnetic method PILE (Propagation Inside Layer Expansion) provides simulated data that show the influence of the interface roughness on the backscattered primary echoes of stratified media; the interface roughness provides a continuous frequency decay of the magnitude of the echoes. The observed frequency variations of the radar magnitude introduce some shape distortion on the radar waveform. The latter variations can be modelled by an exponential function, which provides satisfactory results for a narrow bandwidth (2 GHz). An adaptation of the root‐MUSIC algorithm is proposed. As a result, it is possible to jointly estimate the time delay and the interface roughness. The algorithm is tested on data simulated by the PILE method and numerical examples are provided to assess the performance of this algorithm. The associated results show that the proposed algorithm can estimate both the time delay and roughness parameters with a small relative error.