bluuebunny/crossref_metadata_2025 huggingface dataset:
Low serum vitamin D associated with prediabetes
Authors: Ayhan Recep , Çavuşoğlu Türker Betül , Ahbab Süleyman , Türker Fatih , Ataoğlu Hayriye Esra
Published: August 2018

Background: This study is performed to evaluate vitamin D levels and metabolic parameters in patients with prediabetes, compared to healthy controls.Methods: This study was conducted between October and December 2013 in İstanbul Haseki Training and Research Hospital, internal medicine department. We enrolled total 247 individuals, 122 prediabetic (PreDM) patients (79 female, 43 male) and 125 control healthy individuals (94 female, 31 male) between 20-65 ages who admitted randomizely to the outpatient clinic with non spesific complaints. FPG, urea, creatinine, calcium, phosphate, albumin, alkaline phosphatase, thyriod stimulan hormon (TSH), 25 hydroxy vitamin D (25[OH]D), parathormon (PTH), c-peptide, insulin were analyzed.Results: Pre DM patients’ mean plasma 25[OH]D level (25.7±14.9 nmol/l) was statistically lower than the control group (31.4±17.8 nmol/l). Pre DM patients’ mean plasma insulin, c-peptide, calcium, PTH, HOMA-IR (10.8±8.7 IU/ml, 3.3±2.0 ng/ml, 9.7±0.4 mg/dl, 56.5±22.5 pg/ml, 3.0±2.68, respectively) levels were statistically higher than the control group’s (6.3±3.8 IU/ml, 2.4±1.0 ng/ml, 9.5±0.5 mg/dl, 44.0±16.0 pg/ml, 1.4±0.8, respectively) mean levels. There were negative correlations between 25[OH]D and BMI (r:- 0.13, p:0.03), FBG (r:- 0.14, p:0.02) and plasma insulin (r:-0.16, p:0.01) values. A multivariate logisitic regression model for prediabetes was performed and variables as female gender, age, HOMA-IR and lower 25[OH]D values were risk factors for pre DM.Conclusions: Serum low 25[OH]D level correlated with insulin resistance and metabolic parameters in prediabetic patients. Also, it may play an important role in the development of type 2 diabetes.
Knowledge and attitude of patients with diabetes in government hospitals in the Upper West Region of Ghana
Authors: Kpekura Stephen , Ninnoni Jerry P. K. , Nuvor Samuel V.
Published: August 2018

Background: Diabetes mellitus is a chronic progressive metabolic disorder characterized by hyperglycaemia mainly due to absolute or relative deficiency of insulin hormone. This study assessed the knowledge and attitude of clients with diabetes and its relationship with self-management practices in Government hospitals in the Upper West Region of Ghana.Methods: The research was a cross-sectional survey and adopted stratified sampling technique to select 201 respondents. Questionnaires were used for data collection with a reliability coefficient of 0.8. The data was analyzed using the SPSS version 21.Results: Knowledge on diabetes was high with the overall mean percentage of 72.8%. Diabetes patients had positive attitude with mean percentage of 84.4%. There was also significant relationship between knowledge of diabetes and self-management practices (p=0.0001) as well as attitude of diabetes patients and self-management practices (p=0.001).Conclusions: Diabetes patients in the Upper West Region have in-depth knowledge on the disease condition, self-management practices and positive attitude. These sign of awareness of the disease will very much assist in making the control of the condition easier in the area.
Knowledge, attitude and practices regarding pulmonary tuberculosis in a rural area of Tamil Nadu, India: a cross sectional study
Authors: G. Angeline Grace , S. Gopalakrishnan , R. Umadevi
Published: August 2018

Background: Tuberculosis is still a major public health problem in India. Lack of knowledge about the cause, risk factors, treatment and prevention of pulmonary TB is a major challenge to be addressed to reduce disease transmission. This study was planned with the objective of determining the Knowledge, Attitude and Practices regarding pulmonary tuberculosis in a rural population of Kancheepuram district, Tamilnadu, India.Methods: This community based cross sectional study was carried out between January and March 2018. Sample size of 400 was calculated by using formula 4pq/d2 and respondents were selected from sampled households using systematic random sampling. Data were collected using a pre-tested, structured questionnaire, which were analyzed using SPSS version 16.0 and presented using descriptive and analytical statistics.Results: Among 400 participants studied, only 45.5% had adequate knowledge on PTB, 14.7% had positive attitude and 26.5% had good practices towards PTB. About 91.5% had heard about TB and 79% knew that TB could be transmitted from a patient to others. The cause for TB was correctly mentioned by only 19.5% of the subjects. About 35% knew that transmission of TB is preventable. Positive attitude had a statistically significant association with higher socioeconomic class and with adequate knowledge. Good practices on TB were more noted among participants with adequate knowledge and with age ≤45 years.Conclusions: Study respondents had basic awareness about pulmonary TB but knowledge on cause and prevention was inadequate. Their attitude and practices towards TB also need to be improved. Health education activities need to be intensified for the rural population to bring about significant change in their level of awareness on TB.
Assessment of cardiovascular risk among diabetic patients in an urban area of Kancheepuram district, India: a cross sectional study
Authors: N. Mareeswaran , Umadevi R. , Savitha A. K.
Published: August 2018

Background: Diabetes mellitus is a major public health problem. Non communicable diseases like coronary artery disease (CAD), stroke, obesity are increasing in number and overtakes the communicable diseases with respect to morbidity and mortality. Diabetic populations have a higher risk of developing CAD than the general population. The aim of this study was to assess the risk of developing cardiovascular diseases among diabetic patients.Methods: This is a cross sectional study done among the urban adult population in Kancheepuram district. Sample size of 400 diabetic patients was studied by using consecutive sampling method. Data was collected by administering a pre tested structured questionnaire. Cardiovascular risk was assessed based on PROCAM scoring, a 10 years risk assessment score. The study was done for a period of three months from January to March 2018. Data analysis was done in SPSS software version 22.Results: Among the diabetic patients, 53.5% of them are in high risk category based on PROCAM score for developing cardiovascular disease. A statistical significant association was found between cardiovascular risk and factors like socioeconomic status and overweight/obesity.Conclusions: This study reveals that the diabetic populations are at higher risk of developing cardiovascular diseases. Hence awareness about the risk should be created and appropriate intervention at early stages should be implemented at primary health care level.
An epidemiological study on knowledge, attitude and practice of injection safety among health care personnel in a tertiary care hospital of Tripura
Authors: Datta Anjan , Nag Kaushik , Karmakar Nabarun , Chakraborty Tamal
Published: August 2018

Background: Injection is considered as one of the key procedures of drug delivery all over the world. Unsafe injection practices are very common in countries like India. This study was aimed to assess knowledge, attitude and practice of injection safety in a tertiary care hospital of Tripura.Methods: A cross-sectional study was conducted among 300 participants including staff nurses, operation theater (OT) assistants and laboratory technicians of Tripura Medical College and Dr. BRAM Teaching Hospital, Hapania; who were primarily involved in routine injection practices related to patient care from January 15th to February 14th 2018. Data was collected using a self-administered questionnaire and analyzed using SPSS version 16.0.Results: Majority (77%) of the participants in this study belonged to 18 to 25 years age group and were females (71.3%); mostly were nurses (88%), followed by OT assistants (6.3%) and laboratory technicians (5.7%) respectively. Good injection safety practices were reported by majority of the participants (67.3%). Higher mean age with knowledge of injection safety, nurses as compared to others and probational work experience than permanent were found to have significant association with safe injection practices of the participants.Conclusions: Even though study findings showed good practice related to injection safety among the health care personnel like similar other studies in this country, still improvement is required to fulfil the gap in knowledge and attitude of the health care providers to keep unsafe injection to the minimum level.
Essential rehabilitation services in a rural setting using patient and family centred care model: a case report
Authors: Rao K. Arun , Thomas Susan , Narayan Vivek
Published: August 2018

Chronic diseases have a significant social and economic effect on individuals and societies. These diseases require lifelong care and management. Individuals with chronic diseases need to focus on complications, treatment and prevention. Self-efficacy for performing self-care behaviours is important to bring a change in lifestyle in these individuals which will eventually help in successful personal disease management. This case discusses a typical patient and family centerd care (PFCC) model where the lifestyle changes of a 14-year-old male hemophilia patient were successfully managed. This hemophilia patient required constant medical services, however there were constraints like low accessibility and affordability to healthcare centers. In this model, patients and family members are made partners and collaborators in delivering a sustainable focus on the patient. This model has helped in reducing the frequency of hospital visits and caretakers valuable time. Patient and family-centered care enables patients to self-manage treatment and facilitate doctors to attend other critical cases efficiently. The implementation of PFCC in managing a hemophilia patient turned out to be immensely useful and thus could improve the patient’s quality of life.
Arqueologia Jê do Sul do Brasil: ambiente, sistema, poder e experiência na paisagem de Urubici, Santa Satarina
Authors: Corteletti Rafael , DeBlasis Paulo
Published: August 2018

Neste texto será debatida uma “estratigrafia da paisagem” Jê do Sul do Brasil, através do uso do conceito paisagem em diversos gradientes, desde uma abordagem natural até uma abordagem cultural. Será observada a “paisagem como ambiente”, isto é, a paisagem abordada como reconstrução de ambientes específicos, a partir de estudos de paleo-ambiente; a “paisagem como sistema”, ou seja, a paisagem compreendida através da criação de padrões de atividades intra e intersítios; a “paisagem como poder”, ou seja, a paisagem interpretada como fator de manipulação ideológica nas relações de dominação e resistência; e a “paisagem como experiência”, isto é, a paisagem percebida e imbuída de significado em função de esquemas sociais ou cosmológicos.
Carlos Drummond de Andrade: o cantar das cidades – o martelar dos grandes centros, o ouro e os pomares de quaisquer cidadezinhas
Authors: Dos Santos Simão Pedro
Published: August 2018

Na obra de Carlos Drummond de Andrade perpassa, entre outras, uma poética da cidade, que se dá como uma espécie de busca de identificação do homem por seu espaço. Um eu lírico crítico e reflexivo empreende olhar que não ocorre apenas quando o foco é o contexto urbano dos grandes centros. Uma pequena cidade interiorana também é mote das mesmas críticas e reflexões desse eu. Humor e ironia, característicos do poeta mineiro, também se fazem presentes na temática apontada. O estudo das cidades nesse autor leva-nos a perceber o homem urbano desdobrado em questões que abrangem desde os atos políticos, com suas questões sociais, até a moda, a publicidade, o mercado, a religiosidade e aqueles casos mais prosaicos tão inerentes aos grandes e pequenos centros, respectivamente. É o que tentaremos apresentar nesse texto.
Tradução: o indecidível e o impossível em james joyce
Authors: Esteves Lenita
Published: August 2018

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Discurso e subjetividade na aquisição de línguas estrangeiras
Authors: Cruz Celene Margarida , Jouët-Pastré Clémence
Published: August 2018

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Sobre a singularidade
Authors: Leite Nina Virgínia de Araújo
Published: August 2018

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Algumas notas sobre o significante, o acontecimento e a singularidade
Authors: Milán-Ramos José Guillermo , Baldini Lauro José Siqueira
Published: August 2018

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O singular: uma pedra no caminho dos teóricos da linguagem
Authors: Rajagopalan Kanavillil
Published: August 2018

After a brief examination of some of the major theories of reference propounded from Frege's pioneering work onwards, it is argued the singular is that which invariably escapes every attempt to pin it down by means of the familiar resources available to language users and, naturally therefore, also that which defies every attempt by the languages theorist to represent it within the framework of a formal theory.
Singularidade discursiva na enunciação em segundas línguas
Authors: Infante Silvana Serrani
Published: August 2018

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O estatuto do dado linguístico como articulador de abordagens teóricas e clínicas
Authors: Vorcaro Angela
Published: August 2018

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Apresentação
Authors: Possenti Sírio
Published: August 2018

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Morfologia não-concatenativa em português: os portmanteaux
Authors: Araújo Gabriel Antunes
Published: August 2018

Morphologists working on Brazilian Portuguese have generally neglected the study of non-concatenative morphological operations, such as blending, acronym formation and truncation, perhaps influenced by the opinions of normative grammarians, who claim that these mechanisms of word-formation are arbitrary and unpredictable (cf. Basílio 1987, Sandmann 1991). In this paper, I will concentrate on blending (portmanteaus morphemes) in Brazilian Portuguese and show that the process involved in their creation are quite regular. A formal account of this phenomenon, involving both its morphological and phonological aspects, will be provided. The paper is organized as follows: in section I, I give a description of the phenomenon of blending, a discussion of its cross-linguistic relevance and of the way it is formally treated in the literature. In section II, I will sketch the essentials of Optimality Theory (Prince and Smolensky, 1993), more particular the version of OT know as Correspondence Theory (McCarthy and Prince, various publications), which will serve as the theoretical framework of my study. Section 3 discusses the general aspects and the constraints that are active in blending formation. Finally, section 4 contains the concluding discussion and some suggestion for the further research. It also contains a list of Brazilian Portuguese blending examples.
Illuminating some methodological issues concerning: speech timing research from a comparison between european and brasilian portuguese
Authors: Barbosa Plínio Almeida
Published: August 2018

Algumas questões metodológicas referentes à pesquisa sobre a organização temporal da fala são apresentadas e discutidas. A partir de uma comparação de dois corpora de frases lidas por dois locutores brasileiros e uma locutora portuguesa, avalia-se duas técnicas que visam à determinação do tipo rítmico das línguas: uma técnica dinâmica voltada para aspectos prosódicos e uma técnica voltada para aspectos segmentais. Discutem-se a importância da condição ceteris paribus e os critérios de mensuração nos experimentos em Fonética Acústica, no intuito de iluminar o uso adequado de ambas as técnicas. A primeira parece, no entanto, dar melhor conta daquilo que se conhece da tipologia das línguas do mundo. A segunda pode ser melhorada se alguns cuidados metodológicos básicos são levados em conta. O uso conjunto das duas técnicas poderá ser de grande utilidade para os estudos de tipologia rítmica.
Duração de pausas em conversas espontâneas de parkinsonianos
Authors: Chacon Lourenço , Schulz Geralyn
Published: August 2018

Variability in speech features of Parkinsonians has been described in studies on Parkinsonism. The purpose of this study was to investigate some factories involved in this variability, specifically in pause duration. Speech simples containing pauses were extracted from spontaneous conversations of two male Brazilian Parkinsonians.  Four hundred twenty four pauses (subject one = 130; subject two = 294) were collected, measured and classified according to: (1) degree of duration (very short, short, middle, long and very long); (2) position at the beginning (initial) or in the development (internal) of the subject’s conversational turn; and (3) presence of silence only (unfilled), sound (filled) and combinations between silence and sound (mixed). Great variability in pause duration occurred in both inter and intrasubjects. Except for internal middle pauses, subject one had shorter mean values in pause duration. Filled pauses had shorter mean duration for the two subjects when compared to unfilled ones; however, mixed pauses had longer values for subjects two than subject one. Factors such as cognitive organization, affective states, articulatory difficulties, semantic aspects of enunciation and conversational strategies were linked to the variability in pause duration presented by the 2 subjects.
Diferentes perspectivas no discurso de educadores de creche: uma relação com a prática de formação continuada em serviço
Authors: Pauli Sueli Cristina , Tfouni Leda Verdiani , Ferreira Maria Clotilde Rosseti
Published: August 2018

Taking the “french” discourse analysis as reference, the aim of this work is to determine some relationships between continuous in-training of educators in day-care centers and discourse they produce about their practice. In this way, we took the perspective of analyzing some linguistic cues, specifically those referring to the determination and indetermination of the sentences’ subjects present in the educator’s discourse of two day-care centers (CI and CII), which differed by the fact of having wide in-training experience (CI), or having a non-systematic one (CII). The analysis of the corpora pointed to a preferential style among the CI educators, which consists in the linguistic indetermination of the subject of the sentence, whereas, among CII educators, there was a prevalence of the subject determination. Since the indetermination of the sentence subject is a characteristic of the scientific discourse, one can think about a relationship between continuous in-training and the allocation of places in the discourse where the subjects can speak about their practice in a distance and no-personalized way (effect of meaning which is also typical of the scientific discourse), such as happen with CI subjects. On the other hand, in CII, where the in-training is non-systematic, the greater use of linguistic marks of determination indicates that subjects can assume and commit themselves with the meanings they produce. In CI, therefore, there seems to exist a mechanism of identification with the Other’s discourse, and this effect is absent in CII, due to the absence of scientific discourse which may serve as reference, and to which the subjects might filiate themselves.
Liquid chromatograph-mass spectrometry-based plasma metabonomics study on the effects of moxibustion with seed-sized moxa cone on hyperlipidaemia
Authors: Shao Qinghua , Cheng Jie , Li Yi , Ni Guangxia
Published: August 2018

Hyperlipidaemia (HLP) is a disorder with disturbed lipid metabolism and a major risk factor for various diseases. This study focused on the effect of moxibustion with seed-sized moxa cone on HLP and the relative metabolites and pathways. Levels of total cholesterol (TC), triglyceride (TG) and low-density lipoprotein cholesterol (LDC-C) in healthy controls (HC), HLP patients, HLP patients before (BMT) and after (AMT) moxibustion treatment were measured. Using the liquid chromatograph-mass spectrometry (LC-MS) technique, we detected the plasma metabolites in the aforementioned groups. Pathway analysis was performed for the differential metabolites. Results revealed significantly high levels of TC, TG and LDC-C and low levels of HDC-C were measured in HLP compared to HC. After moxibustion treatment, the levels of TC and TG significantly decreased. Total 87 and 51 differential metabolites were identified in HLP vs HC and AMT vs BMT, respectively, and 21 were common differential metabolites. The differential metabolites in HLP vs HC and AMT vs BMT both significantly enriched in the pathways of Glycerophospholipid metabolism and Sphingolipid metabolism. In conclusion, moxibustion with seed-sized moxa cone effectively improved HLP, might be by affecting the levels of TC and TG, and the regulating of the Glycerophospholipid metabolismand Sphingolipid metabolism pathways.
Effect of Mechanical Stimulation on Clinical and Radiographical Healing in a Post-Extraction Site
Authors: Barbato Luigi , Gonnelli Alessio , Baldi Niccolò , Francioni Edoardo , Tonelli Paolo
Published: August 2018

Aim: In a human pilot case, we used a root formed temporary prosthetical device (Intra-alveolar Device - IAD), to investigate the effect of mechanical stimulation on hard tissue clinically and radiographically. Background: The extraction of a tooth determines the resorption of the alveolar bone. This determines challenge to place an implant and to integrate the prosthesis in soft tissue. Mechanical stimulation is fundamental for bone tropism but is not understood the effect of mechanical stimulation on post-extraction site. Case presentation: A 24 years old woman was enrolled. The IAD’s were used as expected by protocol. Clinical healing was uneventfully. Vertical radiographical bone resorption measured on CBCT was -0,14mm (5,6%) while horizontal bone resorption was -0,21mm (12,36%). Conclusion: This study demonstrated the feasibility of the proposed model. We need clinical prospectical studies enrolling more patients
Enamel Anti-Demineralization Effect of Orthodontic Adhesive Containing Bioactive Glass and Graphene Oxide: an in-Vitro Study
Authors: Lee Seung-Min , Yoo Kyung-Hyeon , Yoon Seog-Young , Kim In-Ryoung , Park Bong-Soo , Son Woo-Sung , Ko Ching-Chang , Son Sung-Ae , Kim Yong-Il
Published: August 2018

White spot lesions (WSLs), a side effect of orthodontic treatment, can result in reversible and unaesthetic results. Graphene oxide (GO) with a bioactive glass (BAG) mixture(BAG@GO) was added to Low Viscosity Transbond XT(LV) in a ratio of 1, 3, 5%. The composite’s characterization and its physical and biological properties were verified with scanning electron microscopy(SEM) and X-ray diffraction(XRD); its microhardness, shear bond stress (SBS), cell viability, and adhesive remnant index (ARI) were also assessed. Efficiency in reducing WSL was evaluated using antibacterial activity of S. mutans. Anti-demineralization was analyzed using a cycle of the acid-base solution. Adhesives with 3 or 5 wt.% of BAG@GO showed significant increase in microhardness compared with LV. The sample and LV groups showed no significant differences in SBS or ARI. The cell viability test confirmed that none of the sample groups showed higher toxicity compared to the LV group. Antibacterial activity was higher in the 48-hour group than in the 24-hour group; the 48-hour test showed that BAG@GO had a high antibacterial effect, which was more pronounced in 5 wt.% of BAG@GO. Anti-demineralization effect was higher in the BAG@GO-group than in the LV-group; the higher the BAG@GO concentration, the higher the anti-demineralization effect.
Satellite Image Fusion to Detect Changing Surface Permeability and Emerging Urban Heat Islands in a Fast-Growing City
Authors: Padmanaban Rajchandar , Cabral Pedro , Bhowmik Avit K
Published: August 2018

Rapid and extensive urbanization has adversely impacted humans and ecological entities in the recent decades through a decrease in surface permeability and the emergence of urban heat islands (UHI). While detailed and continuous assessments of surface permeability and UHI are crucial for urban planning and management of landuse zones, they have mostly involved time consuming and expensive field studies, and single sensor derived large scale aerial and satellite imageries. We demonstrated the advantage of fusing imageries from multiple sensors for landuse and landcover (LULC) change assessments as well as for assessing surface permeability and UHI emergence in Tirunelveli, Tamilnadu, India. Cartosat-2 and Landsat-7 ETM+ imageries from 2007 and 2017 were fused and classified using a Rotation Forest (RF), while surface permeability and temperature were quantified using Soil-Adjusted Vegetation Index (SAVI) and Land Surface Temperature (LST) index, respectively. Fused images exhibited higher classification accuracies than non-fused images, i.e. overall kappa coefficient values 0.83 and 0.75, respectively. We observed an overall increase of 20 km2 (45%) in the coverage of urban (dry, real estate plots and built-up) areas, while a decrease of 27 km2 (37%) for vegetated (cropland and forest) areas in Tirunelveli between 2007 and 2017. The SAVI values indicated an extensive decrease in surface permeability for Tirunelveli overall (0.4) and also for almost all LULC zones. The LST values exhibited an associated overall increase (1.30C) of surface temperature in Tirunelveli with the highest increase (2.40C) for urban built-up areas between 2007 and 2017. The SAVI-LST combined metric depicted the Southeastern built-up areas in Tirunelveli as a potential UHI hotspot, while a caution for the Western riparian zone for UHI emergence in 2017. Our results provide important metrics for surface permeability and UHI monitoring, and inform urban and zonal planning authorities about the advantages of satellite image fusion.
Measurement of Opportunity Cost of Travel Time for Predicting Future Residential Mobility Based on the Smart Card Data of Public Transportation
Authors: Maeda Takashi Nicholas , Mori Junichiro , Ochi Masanao , Sakimoto Tetsuo , Sakata Ichiro
Published: August 2018

This study attempts to investigate a method for creating an index from mobility data that not only correlates with the number of people who relocate to a place but also has causal influence on the number of such individuals. By creating an index based on human mobility data, it becomes possible to predict the influence of urban development on future residential movements. In this paper, we propose a method called the travel cost method for multiple places (TCM4MP) by extending the conventional travel cost method (TCM). We assume that the opportunity cost of travel time on non-working days reflects the convenience and amenities of a neighborhood. However, conventional TCM does not assume that the opportunity cost of travel time varies according to the departure place. In this paper, TCM4MP is proposed to estimate the opportunity cost of travel time with respect to the departure place. We consider such estimation as possible due to the use of massive mobility data. We assume that the opportunity cost of travel time on non-working days reflects the convenience and amenities of the neighborhood. Therefore, we consider that the opportunity cost of travel time has a causal influence on future residential mobility. In this paper, the validity of the proposed method is tested using the smart card data of public transportation in Western Japan. Our proposed method is beneficial for urban planners in estimating the effects of urban development and detecting the shrinkage and growth of a population.
Upaya meningkatkan hasil belajar dengan menggunakan multimedia pada materi sistem koordinasi
Authors: Rozalina Devi Putri , Rozalina Devi Putri
Published: August 2018

Perkembangan teknologi memberikan dampak terhadap beberapa aspek, salah satunya pada aspek Pendidikan. Salah satu perkembangan teknologi dalam pendidikan adalah perkembangan multimedia berupa buku berbasis digital. Perkembangan tersebut memberikan arti yang sangat besar bagi pembelajaran. Salah satu materi yang menggunakan buku digital adalah materi sistem koordinasi. Penelitian tindakan kelas ini bertujuan untuk meningkatkan hasil belajar siswa pada materi sistem koordinasi dengan menggunakan multimedia berupa buku digital. Penelitian ini terdiri dari 2 siklus. Hasil penelitian didapatkan data bahwa terjadi peningkatan hasil belajar siswa dari rata-rata sebelum perlakuan adalah 68 menjadi rata-rata 87. Kesimpulan dari penelitian ini adalah penggunaan multimedia berupa buku digital dalam pembelajaran dapat meningkatkan hasil belajar siswa dalam materi sistem koordinasi.
Meningkatkan hasil belajar biologi melalui penerapan teknik jigsaw pada kelas xii ipa 4 sman 1 cikarang pusat
Authors: Hajizah H
Published: August 2018

Biologi merupakan mata pelajaran yang memiliki dimensi pengetahuan konsep dan metakonsep yang cukup besar proporsinya. Hal ini dapat menimbulkan opini bahwa untuk mempelajari Biologi harus banyak menghapal, padahal bagi sebagian siswa menghapal merupakan aktivitas yang membosankan. Kegiatan pembelajaran yang dikemas dengan baik dapat menggeser opini tersebut. Salah satunya adalah melalui model pembelajaran kooperatif. Kegiatan belajar bersama dapat membantu memacu belajar aktif. Apa yang didiskusikan siswa dengan teman-temannya dan apa yang diajarkan siswa kepada teman-temannya memungkinkan mereka untuk memperoleh pemahaman dan penguasaan materi pelajaran. Penelitian ini merupakan Penelitian Tindakan Kelas (PTK) sebanyak dua siklus. Setiap siklus berlangsung selama dua kali pertemuan, setiap pertemuan dua jam pelajaran. Setiap siklus terdiri dari empat tahap, yaitu : rancangan, tindakan, pengamata dan refleksi. Sasaran penelitian ini adalah siswa kelas XII IPA 4 SMA Negeri 1 Cikarang Pusat tahun pelajaran 2014/2015 semester ganjil. Berjumlah 40 orang siswa. Data yang diperoleh berupa hasil tes formatif dan lembar observasi kegiatan siswa. Dari hasil analisis didapatkan bahwa nilai rata-rata hasil belajar siswa mengalami peningkatan dari Prasiklus sampai siklus II, yaitu Prasiklus (70) ,siklus I (74), dan siklus II (77). Ketuntasan belajar siswa juga mengalami peningkatan, yaitu pada Pra siklus (34%), siklus I (62%), dan siklus II (87%). Simpulan dari penelitian ini adalah model pembelajaran kooperatif teknik Jigsaw dapat meningkatkan hasil belajar Biologi siswa kelas XII IPA 4 SMA Negeri 1 Cikarang Pusat tahun pelajaran 2014/2015 semester ganjil. Selain itu aktivitas siswa dalam proses belajar mengajar juga mengalami peningkatan.
Cooperative work: a proposal of learning fractions with students in the fifth grade
Authors: Acevedo Forero Nelson Andrés , Guerrero Ordóñez Romina Georyany
Published: August 2018

The purpose of this research is to improve school performance of students in the study of fractions using the cooperative work of fifth grade students at   Alto del Obispo School, in San Agustín Huila. Starting from considerations of the Basic Standards for Mathematical Competencies, we state that learning mathematics is not only a cognitive issue, but it also involves emotional and social factors, which are related to a particular learning context in order to contribute to a better quality of life for citizens. That's why mathematics education in learning fractions can be made through the cooperative work which is an exercise that is learned and develops a team of students through positive interdependence, individual and group responsibility, stimulating interaction, some interpersonal and group practices and group evaluation. A methodology is used with a quantitative approach under a non-experimental longitudinal design type panel, examining changes over time, collecting data at different times and applied to the same study group, where initially an objective test (pre-test) is applied to collect data. In a second phase, after developing the teaching strategy, we apply the initial instruments (post-test) the data is processed in the computer SPSS again rendering apparent that the group has experienced a change. As a result, cooperative work is an educational and learning of fractions benchmark that promotes students interests and common sense in a healthy coexistence.
Presentación: Bases neuro-educativas y socio-emocionales para trabajar con videojuegos en contextos de aprendizaje
Authors: Revuelta-Domínguez Francisco Ignacio , Pedrera-Rodríguez Mª Inmaculada
Published: August 2018

Somos conscientes de la dimensión temporal que existe desde el inicio de los estudios de los videojuegos desde diferentes prismas hasta el momento actual. Si nos detenemos en el punto de vista de la inclusión del videojuego en los procesos de enseñanza y aprendizaje, hemos podido comprobar a lo largo de estas décadas que se ha evolucionado desde el uso de videojuegos como recursos para cambiar patrones (desde el más puro estilo conductista) hasta la situación actual que transita por 3 líneas claramente diferenciadas: (a) el uso de videojuegos comerciales como recurso para afianzar un determinado contenido educativo, (b) el uso de los denominados «juegos serios» cuyo modelo integra el desarrollo de contenidos educativos que requieren ser utilizados en el juego como si de una simulación se tratase, esto conlleva la adquisición de nuevos aprendizajes y afianzar otros aprendizajes que adquiridos de otras formas, y; (c) los desarrollos y aplicaciones de la «deconstrucción» del juego que se denomina «gamificación», y que trata de «edulcorar» situaciones de aprendizaje a través del análisis del juego en su contexto general.
Indagando en las experiencias del profesorado para incorporar los exergames en las aulas de Educación Física
Authors: Conde Cortabitarte Igor , Rodríguez-Hoyos Carlos
Published: August 2018

En esta comunicación se presentan los resultados parciales de una investigación orientada a conocer las percepciones de los docentes de Educación Física sobre la incorporación de exergames en las aulas. Más concretamente, el objetivo básico de este trabajo es conocer sus experiencias previas como jugadores y cómo eso puede estar influyendo en la utilización que hacen de estas herramientas. Desde una perspectiva metodológica, el trabajo se asienta en el paradigma cualitativo. Los resultados sugieren que los docentes entrevistados reconocen haber sido usuarios de videojuegos y que esas experiencias podrían influir positivamente en su integración en las aulas.
Aprendiendo léxico y ortografía francesa en la universidad mediante el videojuego SCRIBBLENAUTS
Authors: Brazo Millán Ana Isabel , Muñoz González Juan Manuel , Castro de Castro Carmen
Published: August 2018

En la actualidad, los videojuegos forman parte de la vida lúdica de muchos jóvenes, por lo que consideramos que estos pueden convertirse, además, en un poderoso recurso didáctico en la enseñanza de una lengua extranjera. Este estudio se centra en la utilización del videojuego Scribblenauts Unlimited en la enseñanza del francés en educación superior. El estudio se ha realizado siguiendo una metodología cuantitativa, empleada a partir del uso de un cuestionario creado ad hoc, compuesto por 21 ítems, con el que recogemos la valoración de los estudiantes sobre la adecuación de dicho videojuego en la enseñanza del francés como segunda lengua. A pesar de nuestras expectativas, los resultados obtenidos desprenden una postura de indiferencia hacia las aportaciones en el aprendizaje del idioma. No obstante, durante la investigación, los estudiantes han propiciado un buen ambiente de participación y de ayuda entre ellos. El reto que nos ha supuesto esta experiencia nos invita a seguir trabajando con nuevos títulos de videojuegos y a matizar nuestras futuras intervenciones metodológicas.
Nuevas didácticas geográficas: el modelo TPACK, los MOOCs y Google EarthTM en el aula
Authors: Gómez Trigueros Isabel María , Moreno Vera Juan R
Published: August 2018

Se presenta una propuesta didáctica online para la enseñanza y el aprendizaje de los contenidos geográficos relativos al espacio físico. El recurso tecnológico implementado ha sido el programa Google EarthTM a través de un Cursos Online Masivo y Abierto (MOOC) alojado en la plataforma virtual Google Course Builder. El contexto de la intervención analizada ha sido la Facultad de Educación de la Universidad de Alicante, en el Grado de Educación Primaria. En el estudio, se han desarrollado los contenidos pedagógicos y disciplinares relativos a la Geografía Física, incidiendo en la correcta inclusión de la tecnología para lo que se ha propuesto una metodología basada en el modelo de enseñanza-aprendizaje Technological Pedagogical Content Knowledge (TPACK). El estudio realizado ha sido mixto, cuasi-experimental y se han extraído valores descriptivos de media, desviación típica y varianza. Los resultados de la propuesta ponen de relieve: la importante función de los recursos digitales en la formación del profesorado; la necesidad de su correcta inserción en la enseñanza; su relevancia en la adquisición de contenidos pedagógicos y curriculares y la vital capacitación en competencias digitales de los futuros/as docentes.
Benchmarking the Efficiency of Transplanting Plant Cuttings at Large Young Plant Greenhouse Operations
Authors: Adegbola Yai Ulrich , Fisher Paul R. , Hodges Alan W.
Published: August 2018

Transplanting of unrooted cuttings into trays filled with root substrate is an initial process in the production of rooted cuttings. There is potential for companies producing transplants to decrease production costs and increase profit margins by improving the labor efficiency of this process; however, benchmarking between firms is lacking. This study focused on benchmarking labor productivity for transplanting cuttings at young plant operations and identifying key factors that differentiate efficiency between businesses. Data were collected on the transplanting process of 14 U.S. young plant greenhouse companies during their peak production week in 2016. Companies surveyed included nine operations producing bedding plants (BPs) as the major type of transplant. The total weekly labor allocated to transplant cuttings averaged 2109 ± 449 hours (mean ± se) at a labor cost of $26,392 ± $5842 to transplant 1,316,111 ± 273,377 cuttings, resulting in a labor cost of $0.023 ± $0.003 per cutting. For steps within the process of assembling a transplanted tray of cuttings, receiving and handling unrooted cuttings was 3% of the total labor cost, filling trays with root substrate was 8%, inserting cuttings into the root substrate was 70%, supervising was 10%, and moving assembled trays to the greenhouse bench was 8%. The labor cost per cutting varied nearly 5-fold between growers, from $0.010 to $0.049, indicating potential for improved efficiency in higher cost locations. Differences in the labor cost between firms resulted from factors including the plant type produced in each location, with greater handling and grading required for tissue culture and herbaceous perennials compared with BP cuttings, and differences in the hourly labor cost to the business which ranged from $9.23 to $18.66 between locations. Although other factors such as training, available labor pool, and lean manufacturing optimization were observed to affect labor efficiency at individual locations, it was not possible to quantify these effects using the survey approach taken. Benchmarked figures can be used to highlight opportunities to improve labor efficiency and decrease production costs, and to evaluate return on investment for alternative labor-saving approaches including robotic transplanting.
Influence of Light Quality and Intensity on Biomass and Biochemical Contents of Hydroponically Grown Lettuce
Authors: Lin Kui , Huang Zhi , Xu Yong
Published: August 2018

The effects of different light intensities and qualities on the biomass, physiological parameters, and biochemical contents of hydroponically grown lettuce (Lactuca sativa L.) were evaluated, with the aim of obtaining better quality and higher yield, as well as saving energy in lettuce cultivation. Three different light qualities, provided by red (R), green (G), and blue (B) light-emitting diodes (LEDs), were used to produce six different combinations of illumination: A1: R:G:B = 7:0:3 [photosynthetic photon flux density (PPFD) = 150 μmol·m−2·s−1]; A2: R:G:B = 6:2:2 (150 μmol·m−2·s−1); A3: R:G:B = 7:0:3 (120 μmol·m−2·s−1); B1: R:G:B = 3:0:7 (150 μmol·m−2·s−1); B2: R:G:B = 2:2:6 (150 μmol·m−2·s−1); and B3: R:G:B = 3:0:7 (120 μmol·m−2·s−1), and the fluorescent lamp (FL) at 150 μmol·m−2·s−1 was used as the control (CK). In most cases, treatment A2 resulted in higher biomass attributes, whereas higher physiological parameters were observed in treatment B2. However, a greater shoot dry weight (SDW) was observed in treatment A1. No significant difference was detected in chlorophyll [Chl (a + b)] and carotenoid (CAR) contents among the different treatments. Soluble sugar content was found the highest in treatment A1, although it was not significant compared with that observed in treatment A2. Soluble protein content was higher in treatments with a higher component of blue light. Vitamin C content was found the highest in treatment B3 and the lowest in treatment A1, whereas malondialdehyde (MDA) content was the highest in CK and the lowest in treatments B1 and B2. These results indicated that appropriate ratio of red to blue light can effectively promote the accumulation of biochemical compounds in lettuce and that replacement of a certain portion of red light, blue light, or both with green light was more effective in promoting plant growth and quality.
Genetic Diversity of Puerto Rican Farmer-held Papaya (Carica papaya) Using SSR Markers
Authors: Luciano-Rosario Dianiris , Cruz-Saavedra Luis A. , Siritunga Dimuth
Published: August 2018

Native to Central America, papaya (Carica papaya) is one of the most cultivated fruit crops in the tropical areas of the world. Genetic diversity analyses are an important aspect of conservation of plant genetic resources. In the island of Puerto Rico, where papaya has been consumed for centuries, knowledge on the genetic diversity of papaya is lacking. Therefore, 162 papaya accessions were evaluated using 23 simple sequence repeat (SSR) markers. Of these accessions, 139 were farmer-held samples from Puerto Rico, 13 were U.S. Department of Agriculture (USDA) repository samples, and 10 were commercial varieties. A total of 214 alleles were identified with a mean observed heterozygosity (Ho) of 0.219. Inbreeding coefficient (F) was 0.565, and when evaluating the population structure of these accessions, 2 groups (k = 2) were identified. Unweighted pair group method with arithmetic mean (UPGMA) dendrogram showed no geographical organization within the unknown Puerto Rican samples. This assessment provides an extensive record of the genetic diversity of papaya in Puerto Rico which can contribute to breeding strategies and to the conservation of papaya genetic resources in the Caribbean.
Integrating Moisture Characteristic Curves with Gravimetric Data in the Management of Substrate Moisture Content for Annual Vinca
Authors: Newby Adam F. , Altland James E. , Struve Daniel K. , Pasian Claudio C. , Ling Peter P. , Jourdan Pablo S. , Kessler J. Raymond , Carpenter Mark
Published: August 2018

Greenhouse growers must use water more efficiently. One way to achieve this goal is to monitor substrate moisture content to decrease leaching. A systems approach to irrigation management would include knowledge of substrate matric potentials and air-filled pore space (AS) in addition to substrate moisture content. To study the relationship between substrate moisture and plant growth, annual vinca (Catharanthus roseus L.) was subject to a 2 × 2 factorial combination of two irrigation treatments and two substrates with differing moisture characteristic curves (MCCs). A gravimetric on-demand irrigation system was used to return substrate moisture content to matric potentials of −2 or −10 kPa at each irrigation via injected drippers inserted into each container. Moisture characteristic curves were used to determine gravimetric water content (GWC), volumetric water content (VWC), and AS at target substrate matric potential values for a potting mix consisting of sphagnum moss and perlite and a potting mix consisting of sphagnum moss, pine bark, perlite, and vermiculite. At each irrigation event, irrigation automatically shut off when the substrate-specific weight of the potted plants associated with the target matric potential was reached. Irrigation was triggered when the associated weight for a given treatment dropped 10% from the target weight. VWC and AS differed between substrates at similar matric potential values. Irrigating substrates to −2 kPa increased the irrigation volume applied, evapotranspiration, plant size, leaf area, shoot and root dry weight, and flower number per plant relative to irrigating to −10 kPa. Fafard 3B had less AS than Sunshine LB2 at target matric potential values. Plants grown in Fafard 3B had greater leaf area, shoot dry weight, and root dry weight. Leachate fraction ranged from 0.05 to 0.08 and was similar across all treatment combinations. Using data from an MCC in conjunction with gravimetric monitoring of the container–substrate–plant system allowed AS to be determined in real time based on the current weight of the substrate. Closely managing substrate matric potential and AS in addition to substrate water content can reduce irrigation and leachate volume while maintaining plant quality and reducing the environmental impacts of greenhouse crop production.
Selection Progress for Resistance to Iris Yellow Spot in Onions
Authors: Kamal Neel , Cramer Christopher S.
Published: August 2018

Onion thrips (Thrips tabaci Lindeman)–vectored Iris yellow spot virus (IYSV) causes the disease Iris yellow spot (IYS), which is a major threat to the sustainability of onion production worldwide. An increase in thrips resistance to various insecticides, high costs, and the limited efficacy of insecticides under hot and drier conditions found in various onion-growing regions restrict grower’s options for effective control of thrips and spread of IYSV. Because cultivars resistant to thrips and IYS are lacking, this study was undertaken to measure selection progress for IYS resistance after one selection cycle. In 2009, selections were performed on previously evaluated New Mexico State University (NMSU) breeding lines that showed some reduced IYS disease symptoms, and the selected plants self-pollinated the following year. In 2011 and 2012, plants from the original and selected populations along with a susceptible check, ‘Rumba’, were evaluated under field conditions when onion thrips and IYSV were present. Plants were rated for IYS disease severity and the number of thrips per plant was recorded three times during the study in each year. First-generation material, NMSU 10-776, NMSU 10-782, NMSU 10-785, NMSU 10-807, and NMSU 10-813, had fewer thrips number per plant, lower disease severity, and disease incidence than their original breeding lines on at least one or two rating times in both years. Some first-generation breeding lines performed better with a lower thrips number and disease severity than their original population in 1 year or the other. Most entries exhibited fewer thrips, lower IYS disease severity, and less incidence than the susceptible check ‘Rumba’ at most rating times. Overall, some progress was observed in this first-generation material for reduced IYS disease symptom expression when compared with their original populations.