bluuebunny/crossref_metadata_2025 huggingface dataset:
Associação entre a Percepção da Imagem Corporal com Indicadores Antropométricos em Adolescentes
Authors: Andrade Ingrid Silva , Sousa Beatriz Rocha , Moitinho Bruna Gonçalves , Macêdo Igor Oliveira , Andrade Adna Gorette Ferreira , Facchinetti Juliana Braga , Duarte Stênio Fernando Pimentel
Published: May 2017

A adolescência é um período em que ocorrem mudanças físicas, psicológicas e comportamentais, as quais podem afetar a percepção da imagem corporal. O presente estudo teve como objetivo analisar a associação entre a percepção da imagem corporal com indicadores antropométricos em adolescentes. Trata-se de uma pesquisa do tipo exploratória, analítica, com delineamento transversal e abordagem quantitativa. A população foi composta por 103 adolescentes com idade entre 10 a 19 anos. Os participantes responderam um questionário sóciodemográfico, a Escala de Silhuetas de Kakeshita, e por fim, foram submetidos a uma avaliação antropométrica. A associação entre as variáveis foram avaliadas usando-se os testes de qui-quadrado de Pearson, com um nível de significância de 5% (p<0,05). Houve associação significativa entre a imagem corporal e circunferência abdominal. Constatou-se também que a maior parte dos adolescentes apresentava índice de massa corporal e circunferência abdominal dentro dos parâmetros ideais, entretanto, muitos se consideravam insatisfeitos com a sua imagem corporal.
The beta compound Rayleigh distribution : Properties and applications
Authors: Reyad Hesham , Ibrahim Soha
Published: May 2017

In this paper, we introduce a new four parameter continuous model, called the beta compound Rayleigh (BCR) distribution that extends the compound Rayleigh distribution. Basic properties of the proposed distribution such as; mean, variance, coefficient of variation, raw and incomplete moments, skewness, kurtosis, moment and probability generating functions, reliability analysis, Lorenz, Bonferroni and Zenga curves, Rényi of entropy, order statistics and record statistics are investigated. We obtain the maximum likelihood estimates and the observed information matrix for the model parameters. Two real data sets are used to illustrate the usefulness of the new model.
Study of lung function on construction workers
Authors: K.L Shobha , Venkatachalam Subbramaniam , Nair Ashriina , Elangu Buwanesswaran , Samuganathan, Periyaiyadever , Subramanian Barathi , Rao Amita Shobha , L Ramachandra
Published: May 2017

Lungs are one of the most vital organs which are responsible for gas exchange during respiration .Lung functions can be compromised in working environment especially at building construction work. The aim of the study was to assess the lung functions of the construction workers.Material and Methods: Adult volunteers who had given consent with a field work experience of minimum 2 years were involved in the study. Validated questionnaire was given to them and the responses were collected .Peak flow meter measurement were also analysed.Results: (65.30%) smokers had a peak flow meter reading of less than 400L and plumbers were the group affected by decreased pulmonary function test followed by mason-helpers.Conclusion: Morbidity among the construction workers varied with type of work at the construction site and comorbid factors such as smoking.
New Radiocarbon Ages on Percussion-Fractured and Flaked Proboscidean Limb Bones from Yukon, Canada
Authors: Holen Steven R. , Harington C. Richard , Holen Kathleen A.
Published: May 2017

Proboscidean limb bones discovered in Yukon during the 1960s and 1970s exhibit fracture patterns, notches, and bone flakes that are characteristic of percussion. Because of the unique properties of thick cortical proboscidean bone (probably woolly mammoth Mammuthus primigenius or less likely American mastodon Mammut americanum), some researchers hypothesized that these fracture patterns represent intentional hammerstone modification by humans for marrow extraction and bone tool production. As such, these fracture patterns represent evidence of early human dispersal into Eastern Beringia. Radiocarbon dating in the late 1980s indicated that the bone breakage occurred between about 25 000 and 40 000 radiocarbon years before present (14C yr BP). We report 11 new radiocarbon ages using ultra-filtration methods on a different sample of similarly fractured and flaked bones from Yukon. Only two of the radiocarbon ages fall within the expected range of 25 000 to 40 000 14C yr BP. Six other ages are non-finite, with five being more than 49 100 14C yr BP. Three finite ages range between 46 500 and 50 500 14C yr BP with large standard deviations, and these ages may also be non-finite. Two testable hypotheses to explain the observed breakage patterns were developed, the first being that humans broke the bones and the second that some presently unknown geological process broke the bones. Further research is needed to test these two hypotheses.
Movements and Inferred Foraging by Bowhead Whales in the Canadian Beaufort Sea during August and September, 2006–12
Authors: Harwood Lois A. , Quakenbush Lori T. , Small Robert J. , George J. Craig , Pokiak James , Pokiak Charles , Heide-Jørgensen Mads Peter , Lea Ellen V. , Brower Harry
Published: May 2017

Each spring, most bowhead whales of the Bering-Chukchi-Beaufort (BCB) population migrate to the southeast Beaufort Sea and summer in Canadian waters. In August and September, they form aggregations, which are known to occur mainly in the shallow, shelf waters when oceanographic conditions promote concentration of their zooplankton prey. The movements of individual bowheads while they occupy these late summer habitats are less well known; our knowledge is based on photographic evidence and limited tagging studies conducted from 1982 to 2000. In this study, 85% (17) of the 20 satellite-tagged whales that could have spent some time in the Canadian portion of the Beaufort Sea during late summer 2006 to 2012 spent all or part of August and September there. We analyzed location data for 16 whales, using a two-state switching correlated random walk (CRW) behavioural model, and classified locations in the Canadian waters as associated with lingering behaviour (inferred foraging) or directed travel. We found that these whales spent the greatest proportion of their time lingering (59%), followed by traveling (22%), and transitioning between lingering and traveling (19%). Using only lingering locations for these tagged whales in all study years pooled, we calculated kernel densities and defined five areas within the 75% density contour as aggregation areas. Together, the five aggregation areas we defined comprised 25 341 km2, 14.1% of the total area used by these tagged whales in Canadian waters during August and September of the deployment years. Three aggregation areas were located in shallow waters of the Beaufort Sea Shelf and were used almost exclusively by immature tagged whales in our sample. Two other aggregation areas were observed, one in Darnley Bay and one in Viscount Melville Sound in the Canadian Arctic Archipelago. Each of these was used by one mature whale. Tagged whales were observed to use one or two aggregation areas in a single season, and rarely more. The proportion of lingering time spent in each aggregation area was highly variable among individuals. The largest aggregation area (10 877 km2), located over the Beaufort Shelf north of the Tuktoyaktuk Peninsula (5 – 52 m depth), was used by 13 of the 16 tagged whales, almost exclusively by the immature whales, including three of four that were tracked in two consecutive summers. The Beaufort Shelf overall (and possibly the Tuktoyaktuk Shelf, including the Outer Shelf, in particular) was especially important for immature bowhead whales, while mature whales used habitats beyond the Beaufort Shelf during late summer. Findings may be important to inform both decisions on management and mitigative actions relating to bowhead whale use of the Beaufort Shelf and studies that aim to improve our understanding of the prey base of BCB bowhead whales in the Canadian Beaufort Sea region.
History, Oral History and Archaeology: Reinterpreting the “Boat Places” of Erebus Bay
Authors: Stenton Douglas R. , Park Robert W.
Published: May 2017

Historical and archaeological records are examined for three archaeological sites at Erebus Bay, King William Island, associated with the 1845 John Franklin expedition. Comparison of 19th century historical descriptions with archaeological data from sites NgLj-1 and NgLj-3 establishes that the identification of NgLj-1 as the site of the 1859 McClintock “boat place” is incorrect and that NgLj-3 is the actual site. An assessment of 19th century oral historical information and contemporary archaeological data from NgLj-2 supports the conclusion that a ship’s boat from the Franklin expedition was once located at the site, but its identification as the second “boat place” discovered by Inuit in 1861 is problematic. The study underscores interpretive risks associated with uncritical acceptance of historical and oral historical accounts and the importance of archaeological research in the reconstruction of events surrounding the fate of the Franklin expedition.
From the Editor in Chief
Authors: Karip Emin
Published: May 2017

Pegem Eğitim ve Öğretim Dergisi, 2011 yılının Mart ayında ilk sayısı ile yayın hayatınabaşlamıştı. Üç ayda bir yayımlanması planlanan dergimiz, dördüncü sayısı ile birinci yılınıtamamlamış bulunuyor. Pegem Eğitim ve Öğretim Dergisi okuyucularımızdan vearaştırmacılarımızdan yoğun bir ilgi gördü. Tüm değerli izleyicilerimize teşekkür ederiz.Bir yılın sonunda Pegem Eğitim ve Öğretim Dergisi'ne ilişkin bazı istatistikleri sizlerlepaylaşmak istiyoruz. PEGEM'in web sitesinden Pegem Eğitim ve Öğretim Dergisi'nin yayınhayatına başlayacağı duyurusunun yapılmasını izleyen ilk iki hafta içinde 13 makale başvurusuyapıldı. İlk sayıda 13 başvurudan her iki hakemden de yayımlanması kabul edilen 6 makaleyeyer verildi. İkinci sayıdan itibaren erişilebilirliğin geliştirilmesi amacıyla, makaleleri tam metinolarak web sitemizde yayınlamaya da başladık. İkinci sayıda 8, üçüncü sayıda 9 makaleye yerverirken, dördüncü sayıda ise 10 çalışma yayımlanmaktadır. Dört sayıda toplam 33makaleokuyucularımızla buluştu. Değerlendirme sürecinden sonra yayımlanması için toplam 52çalışma başvurusu yapılmış ve yaklaşık olarak %63'lük bir kabul oranı gerçekleşmiştir. Yayınhayatına yeni başlamış bir dergi için bu derece başvuru olması, Pegem Eğitim ve ÖğretimDergisi'nin yayın hayatına başlama gerekçelerini destekler niteliktedir.
Interpersonal problem solving skills training's effect on the adolescents' living in orpanhages constructive problem-solving and the level of trait anger
Authors: Bedel Ahmet , Arı Ramazan
Published: May 2017

The purpose of this study is to examine the effect of the interpersonal problem solving skills training on the adolescents' living in the orphanages constructive problem-solving skills and the level of trait anger. Pre-test post test control group experimental research design was used, there were 8 subjects in the experiment group and 15 subjects in the control group. For the collection of data Interpersonal Problem Solving Inventory and Trait Anger Scale was used. To decide differencies between group on scores Mann Whitney U test were conducted. The data of the research have shown that interpersonal problem solving skills training has the effect on the increase of the level of the experiment group adolescents' constructive problem solving skills and a significant reduce in the level of trait anger.
Analysis of occupational burnout status of social studies teachers considering several variables
Authors: Yazıcı Kubilay , Avcı Ebru
Published: May 2017

The purpose of the present study is to analyse the occupational burnout levels of the Social Studies teachers, and the levels of emotional exhaustion, depersonalization and personal accomplisment in terms of several variables. The sample of the survey consists of 204 Social Studies teachers who perform a duty in elementary schools in Ankara. In the survey "Maslach Burnout Inventory" which was adapted to Turkish by Ergin (1993) was put to use. T-test and one-way variance analysis (F) were applied to the answers given to the scale for the analysis of the data. As a result of the survey; It was found out that the gender of the teachers of Social Studies does not have any effect on emotional exhaustion, depersonalization and personal accomplisment that are the lower dimensions of the occupational burnout. It was inferred from the survey that the inward satisfaction of the teachers of Social Studies has effect on the emotional exhaustion, depersonalization and personal accomplisment. The correlation between the teachers of Social Studies attempt to carry out their occupation eagerly and their emotional exhaustion is identified in favour of those who do not perform their profession eagerly. In addition, it was found out that the correlation is significant between Social Studies teachers' expectation to receive appreciation from their senior and the lower dimensions of emotional exhaustion and personal accomplisment.
Primary school science and mathematic teachers' beliefs in terms of the relationship between education and classroom management.
Authors: Okut Levent
Published: May 2017

The purpose of this study was to determine if there were a significant relationship between teachers' beliefs related to education and classroom management. For this purpose Educational Beliefs Inventory which was developed by Okut (2009), Attitudes and Beliefs on Classroom Control Inventory which was developed by Martin, Yin and Baldwin (1998) and adapted to Turkish by Savran (2002) were used to gather data. Inventories were administered to 289 teachers. (126 Science teachers, 163 mathematics teachers). Data were analyzed by utilizing descriptive statistics, Chi-Square Test, One-Way Anova Test, t-test, Pearson Product-Moment Correlation Coefficient and Kruskal Wallis H-Test. Results revealed that 10 % of teachers were classified as transmissive, 37 % of teachers were classified as eclectic and 53 % of teachers appeared to have progressive educational beliefs. Teachers had interventionist beliefs on the Instructional Management subscale, whereas they had non-interventionist beliefs on the People Management subscale. Significant relationship was found between teachers' beliefs related to education and classroom management. Teachers who were interventionist also tended to be transmissive. Similarly teachers who were non-interventionist also tended to be progressive.
Develeopment of an Attitude Scale toward Oral History: A validity and reliability study
Authors: Akbaba Bülent , Kılcan Bahadır
Published: May 2017

The purpose of this study is to develop a scale to determine prospective attitudes towards oral history. The scale consisting of 26 items was applied to 123 prospective teachers from Department of Social Sciences Teaching and 118 prospective teachers from Department of History Teaching in Gazi University, Gazi Faculty of Education. Experts' views were given importance to ensure the content validity of the scale. Explanatory factor analysis and item discrimination powers were calculated to determine the validity of the scale. After the analysis done, it is seen that the scale has a two-factor structure. Internal consistency level was calculated to detect the reliability of the scale. Results indicated that this scale can easily be used as a valid and reliable tool to determine the attitudes towards oral history studies.
Explanation of academic procrastination from self-esteem, state anxiety, self-efficacy
Authors: Aydoğan Didem , Özbay Yaşar
Published: May 2017

The purpose of the present study was to examine the interplay between academic procrastination, self-esteem, state anxiety and self-efficacy of the 11th grade high school students who are getting prepared for the University Entry Exam. Particapants were 400 students (220 female, 180 male) that were chosen randomly in Konya province. Academic Procrastination Behavior Scale (APBS), Academic Self-Efficacy (ASES), Coopersmith Self-Esteem Scale (CSES), Spielberg State Anxiety Inventory (SSAI) was used. Pearson Moments Correlation, multiple regression analyze, F-test and t-test was used to analyze data. According to the result, while low self-esteem significantly explains academic procrastination, state anxiety and self-efficacy beliefs don't explain academic procrastination. High academic procrastinators and middle level procrastinators have more state anxiety than low academic procrastinators. Also male students are more inclined to academic procrastination than female students.
A qualitative research on the determination of factors which create organizational distrust in regular high school managers
Authors: Başaran Sinan , Akbaş Oktay
Published: May 2017

The purpose of the actual research is to determine the factors which create organizational distrust in regular high school managers. Semi-structured interview method, which is one of the qualitative research methods, was used in the present study. Managers of 3 regular high schools which are located in the city center of Kırıkkale were interviewed. The factors which create organizational distrust in regular high school managers were grouped under 4 categories after the content analysis. These categories are as follows: Employees' behaviors which cause distrust in managers, legislation and practices of the Ministry of National Education, characteristics and features of the school and other managers' behaviors which cause distrust in high school managers. High school managers stated that the abuse of the right to receive health certificate which is provided by the law No. 657, political and other kinds of pressures that employees put on the managers, low amount of subsidies sent to regular high schools, populist explanations of the Ministry for the public, not being authorized (for managers) to choose assistant managers, the legislation which does not give authorization to local governors and the impact of politicians on school managers created a distrust in them. This research revealed that the factors which cause distrust in high school managers resulted mostly from the structure of public institutions and cultural structure.
Comparing analysis perception of citizenship in Turkey's and Egypt's social studies textbook
Authors: Osmanoğlu Ahmed Emin , Öztürk Cemil
Published: May 2017

The contents of the textbooks are shaped according to the policies and education programs of the states. Textbooks are important information sources that reveals various perceptions of states. In this context, the objective of this study is comparing citizenship perceptions of Turkeys' and Egypts' according to their social studies textbooks. Content analysis and comparative research methods are used in the research. Defining of category, - scale-, of citizenship is as follows: The legal connections that determine relations between state and individual, relations among individuals who live in the same country. The term refers to obligations and rights among which individuals' against state and states' against to individuals. Rightful citizenhip perception comes into prominence in Turkish social studies textbooks. Mostly, it refers to womens' rights, freedom of thought, rights of education. Obligations are taxing obligation, receiving education and working. In Egypts' social studies textbooks, obligations come into prominence for perception of citizenship. There isn't any information about citizenship rights in textbook. Obligations are about to obey rules, laws and protect environment.
Perspectives of school principals on their own task
Authors: Turan Selahattin , Yıldırım Nuray , Aydoğdu Elif
Published: May 2017

The purpose of this study was to examine perspectives of school principals on their own task. Data were collected through semi-structured interview and analyzed through descriptive analysis. The interviews of each school principals took about thirty minutes. According to the findings of the study, school principals feel themselves responsible for the quality of human interactions and the financial issues related daily operations of school. While principals were facing problems with stakeholders and financial issues, they indicated that they are uncertain about the future of task or profession of principalship. At the same time participants indicated that a school principal should be a person having features such as open to communication, patient, honest, having knowledge of pedagogy and management, having teaching experience.
An investigation of high school students' school quality of life perceptions as an element of school culture
Authors: Demir Özden , Kaya Halil İbrahim , Metin Meral
Published: May 2017

This study aims to investigate regular and vocational high school students' perceptions of school quality of life. In line with this purpose, the questions that guided the study are "Are there any significant relationships between the sub-dimensions of school quality of life perceptions (teachers, positive feelings about school, status, school authorities, negative feelings about school, students and social activities)?", "Do the perceptions of students about school quality life differ depending on the factors such as school type, gender, grade level, and parents' education level?", and "Are there any significant relationships among sub-dimensions of school quality of life perceptions (teachers, positive feelings about school, status, school authorities, negative feelings about school, students, and social activities) of 9th, 10th, and 11th grade students?". The study was conducted as a descriptive study making use of survey method. The participants are 358 randomly selected students from three schools randomly selected among regular, vocational, and Science and Anatolian high schools located in Kars city centre. The participants' perceptions of school quality of life were identified through Scale for Measuring Quality of Life in High Schools (LISEYKO) which was revised by Sarı (2011). Cronbach-Alpha internal consistency coefficient of the original scale is .86 while that of used in the present study was found .70. The data were analysed using factor analysis, numbers, percentages, arithmetic mean scores, t-test for independent groups, one-way analysis of variance, and correlation analysis.The results indicate that there is not any significant relationship between gender and the sub-dimensions of the school quality of life scale, and between the type of high school and positive feelings about school, status, negative feelings about school, students, social activities, and total sub-dimension scores. There is a significant difference between the grade levels and the sub-dimensions of quality of school life scale in relation to teachers, positive feelings about school, negative feelings about school and total scores in favor of the 12th graders. While mothers' education level reveals significant difference in terms of teachers, school authorities, social activities, and total scores the other subdimensions indicate no difference. Similarly, fathers' education level demonstrates significant difference in teachers and students sub-dimensions, but not in the other subdimensions. There is not any statistical difference between the teacher sub-dimension and school authorities, status and between the student sub-dimension and negative feelings towards school and total scores. However, there are statistically significant relationships in the other sub-dimensions of the scale.
Explanation of students' academic procrastination behaviors with, anxiety, fear of failure, self-esteem and achievement goals
Authors: Kandemir Mehmet
Published: May 2017

The goal of this study is to explain academic procrastination behaviors of students about their academic responsibilities with the anxiety, fear of failure, self esteem and achievement goals. Study group of this research, in which descriptive survey model was used, consist of students preparing for university exam in different training centers in Ankara. Totally 376 students were questioned in scope of this research; 176 of them were male while 200 of them were female. Academic Procrastination Scale, Spielberg State Anxiety Inventory, Fear of Failure Scale, Coopersmith Self Esteem Inventory and Achievement Goals Scale were used for gathering data in the research. Pearson Moment Correlation Coefficient and Multiple Regression analysis were used for the statistical analysis of data. At the end of the research, it was found that, in the study, in which self esteem, anxiety, fear of failure and achievement goals variables were used in order to explain postponement behaviors, explain academic procrastination behaviors in a model.
From the Editor in Chief
Authors: Doğanay Ahmet
Published: May 2017

Dear producers and consumers of knowledge,

 

I would like to share the happiness of being with you again with 7th Volume 1st Issue of Pegem Journal of Education and Instruction (PEGEGOG). I hope you could find time to have a rest after your busy schedule. Initially, I want to thank you for the increasing interest for our journal.

As mentioned before, we had applied to many indexes. Our belief in being accepted to these indexes that we are through evaluation process is increasing day by day. I would like to remind that our journal will have English and Turkish full papers from now on to fulfill the conditions of these indexes.

 

We shared with you in previous issues and announcements that our journal got high scores by many indexes. I'm pleased to inform you in this issue that the journal's h-index rose to 9. However, our aim is always to have much higher scores. Therefore, we invite you to share studies comprehensive, built on strong theoretical basis, innovative and bringing a vision on various fields of educational sciences increasing the number of readers.

 

There has been 15 articles sent for publication to our journal. This is good news for our journal and country. On the other hand, I have to indicate that there were critical problems in terms of format within these articles as stated in the previous issue. First of all, unfortunately we had to reject some articles as in many of them there were texts very similar to ones in different articles. At first step, we scan all articles in i-Thenticate program to determine the exact quotations from other resources. After this scan, we reject the articles detected to have exact quotations at a high rate without initiating peer-review process. Apart from that, we also send back the articles not written in an academic format not to disturb our reviewers unnecessarily.

 

One of the problems with the articles submitted to our journal and we had to reject was about data analysis. The data is the raw information collected from related resources through research aims. These should be analyzed in parallel with these aims. It is necessary to analyze them using statistics for quantitative data and methods such as content analysis or descriptive analysis for qualitative data. Analysis provides the data being transformed into findings and make sense. Especially, in some of document analysis and some qualitative studies, it is seen that data are presented as findings. In some others, data are presented being only described. It is essential that the studies are formed in an article format obeying the rules by the journal and presented for publication afterwards.

 

As always, we present the six articles got through peer-review process and given DOI number to you dear producers and consumers of knowledge. I wish these studies conducted in various fields of educational sciences will be useful and contribute to theoretical knowledge within the field. Hope to meet within the next issue.

 

Sincerely yours,
An experimental study of the performance and emissions of spark ignition gasoline engine
Authors: Rashid Adnan Kadhim , Abu Mansor Mohd Radzi , Wan Ghopa Wan Aizon , Harun Zambri , Wan Mahmood Wan Mohd Faizal
Published: May 2017

The resistance of gasoline to knocking is critically determined by the octane number. The engine will encounter a significant waste of power, reduced efficiency and enhanced emission levels if a well-defined gasoline octane number is not employed. In this study, the engine performance and emission of hazardous gases were experimentally investigated through the use of three gasoline fuels (RON95, 97 and 102). The engine selected for the testing was a 1.6-L four-cylinder Toyota 4A-GE Blacktop VVT with the original ECU. The engine was run at different constants for various part load conditions as well as at constant throttle body. The engine that was operated with RON97 fuel was found to display positive improvements in terms of the brake specific fuel consumption of the engine, reduced at an average of 5 and 10%, compared to RON102 and RON95 fuels, respectively. Furthermore, the engine operated with RON102 fuel exhibited higher torque and engine power compared to RON97 and RON95. The brake thermal efficiency for both RON97 and RON102 fuels was remarkably improved at an average of 12% compared to RON95. The incorporation of RON102 fuel reduced the emission of NOX compared to RON95 and RON97 fuels at an average of 34% and 40%, respectively. The RON102 fuel produced the highest HC emission compared to RON97 and RON95. The CO emission was found to be higher for RON102 fuel compared to RON97 and RON95 at an average of 12.4% and 17%, respectively. The study concluded that although engine performance and efficiency versus gasoline depend highly on the engine design parameters, RON97 is able to deliver high performance and efficiency in all conditions. Therefore, it is recommended that RON97 be used instead of RON95 to achieve better performance with this type of engine.
Pressure sores of human tissue damage during pelvic binder compression
Authors: Munandar I. , Huzni S. , Ismail M.S. , Shaari M.S. , Ariffin A.K.
Published: May 2017

Pelvic circumferential compression is a device used to reduce injury which inadvertently, cause soft tissue damage. When force is applied excessively to the pelvic binder, tissue is damaged due to prolonged high pressure. Therefore, effect from this interaction between tissue and pelvic binder is an important factor to avoid pressure sores due to human tissue damage. The aim of this study is to investigate the effects of human tissue interaction due to compression of the pelvic binder using a finite element modelling approach. A three-dimensional human pelvic model was developed to simulate pressure distribution on tissue interfaces. The applied loads with two different conditions – dry and wet skin were applied on both tips of the pelvic strap during binder-tissue interaction. The compression load of the pelvic binder was estimated on a pelvic strap in order to reduce pelvic fracture. The compression load was varied substantially between locations as well as between skin conditions. There were two straps on the pelvis. For pelvic strap 1, the pressure on the sacrum and ilium was higher than the pressure measured on pelvic strap 2 while pressure on the anterior area was the same for both pelvic straps. Analysis results showed that the pressure which developed between both tissue and pelvic binder exceeded the recommended pressure i.e. ≥ 9.3 kPa at tissue interfaces. When pressure on tissue interfaces is not controlled, this condition can lead to tissue damage due to prolonged periods of time. Hence, to avoid tissue damage to the pelvic binder a cushion must be introduced to reduce the effect of tissue reaction from the prehospital device. Subsequently, tissue and pelvic binder interaction simulation results were compared with experimental data for validation in the model developed.
Heat transfer performance of non-circular coiled tubes - Research summary, challenges and directions
Authors: Kurnia J.C. , Sasmito A.P.
Published: May 2017

Coiled tubes have been widely used in major industries due to their high heat transfer, ease of manufacturing and compactness. Numerous studies have been conducted experimentally and numerically to evaluate the heat transfer performance of coiled tubes. A majority of these studies were focused on circular tubes, while only limited studies were concerned on non-circular tubes. Recently, a series of computational studies have been conducted in our research group to investigate the flow characteristic and heat transfer performance of non-circular coiled tubes. Several key parameters affecting flow behavior and heat transfer performance have been evaluated and examined. The heat transfer performance is numerically evaluated and compared by utilizing the concept of Figure of Merit (FoM). The paper is intended to provide an essential summary of these numerical studies with the aim of providing a general overview of the advantage and drawbacks of non-circular coiled tubes in thermal engineering applications. Challenges and directions of the research will also be discussed. In general, it is revealed that heat transfer improvement in the coiled tube is followed by increasing pumping power. Moreover, with a more complex coiled geometry proposed, the processes of manufacturing the tube and creating the computational domain will become major issues in non-circular coiled tube studies. In addition, more studies on the application of coiled tubes used for heat exchanger and chemical reactor are expected to increase in the future, especially in the micro or nanoscale.
Dynamic simulation of brake pedal force effect on heavy vehicle braking distance under wet road conditions
Authors: Zamzamzadeh M. , Saifizul A.A. , Ramli R. , Soong M.F.
Published: May 2017

Recent experiences have shown that one of the main causes of heavy vehicle crashes is the braking performance. In particular, when having to decelerate in an emergency situation, such as when an unexpected object is in the road. Thus, the capability of a vehicle to come to a safe stop is one of the most important factors in preventing more accidents. Safe braking distance is influenced by many factors, such as brake pedal force, the vehicle’s loading conditions, the travel speed and the road surface conditions. The aim of this study was to analyse the effect of the driver’s brake pedal force on braking distance during an emergency situation, allowed for a wide range of heavy vehicle’s GVW and speed. This study is carried out by using a multi-body dynamics simulation of a Single Unit Truck based on the validated vehicle model. Braking performance was estimated in terms of braking distance on a straight road with a wet surface. The findings from the braking distance simulation suggest a non-linear relationship between brake pedal force and braking distance. Finally, it reveals that, depending on the wheel lock-up situation, braking distance increases with increasing brake pedal force, and that the braking distance on a wet road is significantly affected by both the heavy vehicle’s GVW and speed.
Peroral Cholangiopancreatoscopy with the SpyGlass® System: What do we Know 10 Years Later
Authors: Pereira Pedro , Peixoto Armando , Andrade Patrícia , Macedo Guilherme
Published: May 2017

Smaller endoscopes and catheters have been developed that permit direct visualization of the bile and pancreatic ducts (cholangioscopy and pancreatoscopy, respectively). These endoscopes and catheters are passed through the working channel of a standard therapeutic duodenoscope during endoscopic retrograde cholangiopancreatography (ERCP). The SpyGlass Direct Visualization System (Boston Scientific Corp, Natick, MA, USA) is currently the most widely used and studied device. Cholangioscopy with intraductal lithotripsy has become an established modality in the treatment of difficult biliary lithiasis. When used in the evaluation of indeterminate biliary strictures by experienced endoscopists in recognizing intraductal pathology, it increases the diagnostic yield of tissue sampling. Pancreatoscopy is complementary to other imaging modalities in the evaluation of intraductal papillary mucinous neoplasms of the pancreas and is emerging as a sole or adjunctive therapy to extracorporeal shock wave lithotripsy for the treatment of main pancreatic duct stones. It remains investigational in the diagnosis of pancreatic adenocarcinoma. Complications specific to the performance of cholangiopancreatoscopy include cholangitis, which is related to intraductal fluid irrigation.Abbreviations: EHL: Electrohydraulic lithotripsy; ERCP: Endoscopic retrograde cholangiopancreatography; ESWL: Extracorporeal lithotripsy by shock waves; ET: Endoscopic therapy; EUS: Endoscopic ultrasound; IPMN: intraductal papillary mucinous neoplasm; LL: Laser lithotripsy; MDCT: Multi-detector computed conventional tomography; MPD: Main pancreatic duct; MRCP: Magnetic resonance cholangiopancreatography; MRI: Magnetic resonance imaging; POCPS: Peroral cholangiopancreatoscopy; PSC: Primary sclerosing cholangitis
How to Increase the Efficiency in Research on Non-Surgical Interventions during Cancer Surgery?
Authors: Forget Patrice
Published: May 2017

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It is Time to Rethink H. pylori Therapy
Authors: Dang Bich N. , Graham David Y.
Published: May 2017

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Eradication Rates in Italian Subjects Heterogeneously Managed for Helicobacter pylori Infection. Time to Abandon Empiric Treatments in Southern Europe
Authors: Di Ciaula Agostino , Scaccianoce Giuseppe , Venerito Marino , Zullo Angelo , Bonfrate Leonilde , Rokkas Theodore , Portincasa Piero
Published: May 2017

Background & Aims: H. pylori eradication is strongly affected by various factors, including the ongoing antibiotic resistance. We describe a “real life” scenario in patients managed for H. pylori-related conditions, living in a southern Italian region (Apulia), an area with clarithromycin resistance >15%.Methods: 2,224 subjects were studied in two tertiary referral centers in Apulia. Analyses included: reason for referral, H. pylori infection rates (13C-urea breath test – UBT or upper endoscopy), and eradication rates following distinct regimens previously prescribed or prospectively prescribed (such as the bismuth-based quadruple therapy Pylera®, recently marketed in Italy).Results. Over 80% of the patients were referred by family physicians (60% naïve subjects). The overall infection rate was 32.5% and it was similar in asymptomatic patients (31.1%) or with H. pylori-related symptoms/clinical conditions (34.3%). In the 987 H. pylori+ve patients receiving therapy, the overall eradication rate was 80.2% (ITT). Observed eradication rate varied greatly across different regimens: 57.1% (2nd line levofloxacin), 59.6% (unconventional), 70.7% (7-day triple), 73.2% (7-day undefined), 89% (10-day sequential) and 96.9% (ITT, 10 day Pylera®, 1st to 5th line regimens given to 227 patients).Conclusions. A heterogeneous “real life” scenario in Southern Europe shows that H. pylori+ve patients are put at risk of poor outcomes and points to the need of a susceptibility-based therapy according to guidelines and local microbial resistance. In the present setting (i.e. high clarithromycin resistance), despite the high observed eradication rate, sequential therapy should not be recommended (absent in guidelines, unneeded antibiotic). Bismuth-based quadruple treatment (1st, 2nd or subsequent lines) yields the highest eradication rates.Abbreviations: ALT: Altamura; BA: Bari; EGDS: esophagogastroduodenoscopy; GERD: gastro-esophageal reflux disease; H. pylori: Helicobacter pylori; ITT: intention-to-treat; PP: per-protocol; PPI: proton pump inhibitor; UBT: urea breath test.
Degenerate Intraductal Papillary Mucinous Carcinoma with Fish-Mouth Appearance of the Papilla
Authors: Peixoto Armando , Ribeiro Pedro Moutinho , Macedo Guilherme
Published: May 2017

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Peroral Endoscopic Myotomy for the Treatment of Achalasia in a Patient with Esophageal Varices. A Case Report
Authors: Shen Naning , Wang Xin , Zhang Xiaoyin , Yao Liping , Xie Huahong , Zhang Hongbo
Published: May 2017

Achalasia is very uncommon, and rarely does achalasia co-exist with esophageal varices. We present a 62-year-old woman who was diagnosed with both achalasia and esophageal varices in December 2014 and had a past history of hematemesis. The patient’s achalasia symptoms’ Eckardt score was 9, and her hepatic function was Child-Pugh grade A6. After comprehensive assessment of the patient’s health and discussion of the pros and cons of various therapies for achalasia, the patient underwent a peroral endoscopic myotomy. She was symptom-free after the operation and had no recurrence of achalasia symptoms at 20-month follow-up. No adverse events were reported. Peroral endoscopic myotomy for achalasia with esophageal varices has not been previously reported in the English literature.Abbreviations: BTI: Botulinum toxin injections; EUS: Endoscopic ultrasonography; GEJ: Gastroesophageal junction; HIFU: High-intensity focused ultrasound; LHM: Laparoscopic Heller myotomy; PD: Pneumatic dilation; POEM: Peroral endoscopic myotomy; TIPS: Transjugular intrahepatic portosystemic shunt.
The “two-devices-in-one-channel technique” for biliary through-the-scope stent removal
Authors: Zimmer Vincent , Lammert Frank
Published: May 2017

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Um estudo sobre escolas eficazes no Brasil e na Itália: o que realmente importa na opinião dos pais, alunos, professores e gestores
Authors: Garcia Paulo Sergio , Bizzo Nelio
Published: May 2017

Este estudo investiga os fatores escolares que explicam o desempenho acadêmico dos estudantes sob a visão dos grupos envolvidos no processo de formação: família, alunos, professores e gestores. Um estudo de caso, coletando dados por meio de entrevistas, foi realizado em duas escolas, uma no Brasil e outra na Itália, onde seus alunos apresentaram alto rendimento acadêmico. Os resultados revelaram que não há um fator isolado que explique o desempenho e, sim, múltiplos fatores, formando um campo magnético que sustenta e apoia a aprendizagem e o rendimento dos estudantes. Doze fatores na realidade brasileira e 11 na italiana foram citados por todos os grupos como explicativos do alto desempenho, sendo o principal fator o professor. Esses dados são relevantes para os especialistas, que podem utilizá-los em formação inicial e continuada, mas, sobretudo, para os gestores, utilizando-os na melhoria de suas escolas.
O novo status do saber na era tecnológica e os desafios para a educação segundo Hans Jonas
Authors: Oliveira Jelson Roberto de
Published: May 2017

O objetivo do presente artigo é abordar a mudança no estatuto do saber a partir da era moderna e suas repercussões sobre a educação no século XXI, tendo como referência a filosofia de Hans Jonas. Para tanto, analisa-se como oconhecimento perdeu seu valor contemplativo, ontológica e politicamente falando, para assumir uma perspectiva de exploração do mundo, chegando a apresentar-se ele mesmo como uma mercadoria, na forma da informação. Contrapõe-se, assim, o homo faber ao homo sapiens, com o prejuízo do segundo. À educação cabe enfrentar a tensão entre o fazer e o saber, recusando uma visão simplista da ideia de competências e assumindo uma posição crítica capaz de preparar o ser humano integralmente para assumir a sua responsabilidade diante dos novos poderes da tecnologia.
Editorial
Authors: Dos Santos Andréia Mendes
Published: May 2017

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PVDF-TrFE Electroactive Polymer Mechanical-to-Electrical Energy Harvesting Experimental Bimorph Structure
Authors: Kaval William G. , Lake Robert A. , Coutu Ronald A.
Published: May 2017

Research of electrostrictive polymers has generated new opportunities for harvesting energy from the surrounding environment and converting it into usable electrical energy. Electroactive polymer (EAP) research is one of the new opportunities for harvesting energy from the natural environment and converting it into usable electrical energy. Piezoelectric ceramic based energy harvesting devices tend to be unsuitable for low-frequency mechanical excitations such as human movement. Organic polymers are typically softer and more flexible therefore translated electrical energy output is considerably higher under the same mechanical force. In addition, cantilever geometry is one of the most used structures in piezoelectric energy harvesters, especially for mechanical energy harvesting from vibrations. In order to further lower the resonance frequency of the cantilever microstructure, a proof mass can be attached to the free end of the cantilever. Mechanical analysis of an experimental bimorph structure was provided and led to key design rules for post-processing steps to control the performance of the energy harvester. In this work, methods of materials processing and the mechanical to electrical conversion of vibrational energy into usable energy were investigated. Materials such as polyvinyledenedifluoridetetra-fluoroethylene P(VDF-TrFE) copolymer films (1um thick or less) were evaluated and presented a large relative permittivity and greater piezoelectric β-phase without stretching. Further investigations will be used to identify suitable micro-electromechanical systems (MEMs) structures given specific types of low-frequency mechanical excitations (10-100Hz).
BROODSTOCK CONDITIONING FOR THE TROPICAL ABALONE (Hatiotis asinina) UNDER DIFFERENT COMBINATION OF PHOTOPERIOD AND WATER TEMPERATURE
Authors: Djoko Setyono D. E.
Published: May 2017

The main purpose ot this study is to understand the influcnce of external parameters, i.e, photoperiod and water temperature, on gonadal maturation of tropical abalone (Haliotis asinina) in southorn Lombok waters, NTB
Cultural Commitments and Gender Parity
Authors: Walters Barbara R. , Perez Stephanie
Published: May 2017

The research reported herein follows closely on the work of Wade M. Cole and American feminist scholars, such as Christine Bose, Patricia Hill Collins, and Bandana Purkayastha. The empirical analysis uses United Nations data to examine the likelihood of a nation ratifying the Convention on the Elimination of All Forms of Discrimination against Women (CEDAW) and its Optional Protocol (OP), which amplifies the enforcement provisions, based on the extent to which gender parity is embedded in the religious, cultural, economic, and political institutions of the country. Countries with high scores on indicators of gender equality and female institutional participation are more likely to ratify both the CEDAW and the OP. The data analysis produces statistically significant relationships among key indicators of gender parity within a country, its dominant religion, and the likelihood of ratification of the CEDAW and the OPCEAFDW, with higher levels of significance for the OP. The research and findings point to existential paths within, across, and extraneous to more ordinary religious, political, and economic groupings—paths that legal texts and concerted actions invest with ultimate meaning and which are thereby appropriately cast as a form of implicit religion.
Science Fiction and the Ideological Definition of Religion
Authors: Tuckett Jonathan
Published: May 2017

According to William Sims Bainbridge science fiction serves an ideological purpose. In this paper I take this premise and re-frame it in the terms of philosophical phenomenology of Edmund Husserl and Max Scheler to argue that science fiction promotes a “science” ideology. Specifically, it promotes a particular mode of naturalization: making the person “fit” within their life-world. It does this by using the perceived culture war between “science” and “religion” as a framing device to throw the former into sharper contrast. Contra Stephen Hrotic, I argue the changing perceptions of religion in science fiction have not become more tolerant but reflect changes in the “scientific” mode of naturalization. To demonstrate this I will look at two key case studies: James Blish’s A Case of Conscience and Mary Doria Russell’s The Sparrow.