The Structural Model of Relationship between Informational Style, Achievement Goals and Cognitive Engagement

As a critical period in people lives, teens’ period relies on two special aspects. In one hand it relates to the changes of believes about the ego. On the other hand, it relates to social and upbringing expectations. There is one unifying concept which unifies the changes and it’s the identity. Based on Brzezinski’s socio-cognitive perspective, identity is considered a theory of self. The self-theory is a conception structure of principles, values and criteria related to self which helps the person to adapt and cope with life problems especially the educational life. The self-theory may lead the teenager toward adaptive values, goals and motivations to make the teenager use one’s cognitive abilities for more success and cooperation. In this way, the purpose of this article is to offer a structural model for cognitive engagement based on informational style, mastery goal and performance-approach goals. The present study is a kind of non-experimental design. To speak more precisely, it is a type of correlations design which has analyzed a structural pattern of variables relationship. The sample size (the number of people taking part in study) is 630. The sample candidates are medical students of Sabzevar and Neyshaboor universities, who have been selected by a multi-stages/steps sampling process. Brzezinski identity style scales (IsI-3), Midgly et al achievement goal (PALS) and also motivational strategies for learning (MSLQ) were used to evaluate the research variables. The data were analyzed by structural pattern of the equations. The results indicated that informational style has got two effects on the cognitive engagement which are 1- A direct positive effect (0/23). 2-An indirect positive effect and more powerful (0/53) that indirect effect between two variable is through mastery goals (which is a mediator variable). Mastery goals make adolescent who have informational identity style and more purposeful in information searching. Mediator variable of mastery goals builds up stronger relationship between informational identity style and cognitive engagement

PROFIL DAN MOTIF KHALAYAK REMAJA DALAM MENONTON TAYANGAN SINETRON GANTENG-GANTENG SERIGALA ( Studi Deskriptif Anggota Online Fanpage Facebook Sinetron Ganteng-Ganteng Serigala Di SCTV Periode Oktober - Desember 2015 )

Penelitian ini dilatarbelakangi oleh permasalahan banyaknya aduan masyarakat untuk sinetron Ganteng-Ganteng Serigala di SCTV, namun disisi lain banyak remaja yang menyukai sinetron tersebut dan mendapat rating tinggi selama penayangan, sehingga peneliti tertarik mengambil penelitian ini untuk mengetahui motif dalam menonton sinetron GGS. Permasalahan yang diangkat oleh peneliti ialah bagaimana profil demografi khalayak penonton, bagaimana profil demografi kelompok penonton dan bagaimana motif penonton dalam menonton GGS. Penelitian ini menggunakan teori uses and gratification yaitu khalayak mengkonsumsi media sesuai dengan kebutuhan individual dan sosialnya. Metode yang digunakan oleh peneliti dalam penelitian ini yaitu metode deskriptif. Peneliti mengambil objek penelitian pada anggota online fanpage facebook secara accidental. Hasil dari penelitian ditemukan bahwa (1) Profil penonton aktif GGS yaitu remaja usia 13-17tahun, sebagian besar laki-laki dengan pendidikan SMP-SMA dan status ekonomi sedang. (2) Profil demografi kelompok penonton GGS adalah sebagian besar dari kelompok organisasi sekolah. (3) Motif penonton sinetron Ganteng-Ganteng Serigala yaitu, dengan menonton GGS penonton belajar niai-nilai kebersamaan dan saling membantu, rasa memiliki dengan teman dan keluarga kian akrab, serta dengan menonton GGS untuk menemani waktu bersantai dan mengisi waktu luang. --- This research is based on there many problems from public complaints to the soap opera (sinetron) ‘Ganteng-Ganteng Serigala’ in SCTV, but on the other hand a lot of teenagers who love the soap opera and got a high rating during delivery. So the researcher is interested in taking this research to find out the motif in watching soap opera GGS. Issues raised by researcher is how the audience demographic profile of the audience, how the demographic profile of the audience group and how the audience in watching GGS motif. The research used the uses and gratification theory that audiences consume media appropriate individual and social needs. The method used by researcher in this research is descriptive method. Researcher took the research object on fanpage facebook member online by accidental. Results of the study found that (1) Profile active audience of GGS is 13-17 years old, most men with junior-high school education and economic status of the middle class. (2) Demographic Profile GGS audience groups is mostly of a group of school organizations. (3) Motif-GGS soap opera viewers, by watching GGS the audience learns value togetherness and helping each other, a sense of belonging with friends and family increasingly familiar, as well as watching GGS to spend the time to relax and spend leisure time

The Structural Model of Relationship between Informational Style, Achievement Goals and Cognitive Engagement

As a critical period in people lives, teens’ period relies on two special aspects. In one hand it relates to the changes of believes about the ego. On the other hand, it relates to social and upbringing expectations. There is one unifying concept which unifies the changes and it’s the identity. Based on Brzezinski’s socio-cognitive perspective, identity is considered a theory of self. The self-theory is a conception structure of principles, values and criteria related to self which helps the person to adapt and cope with life problems especially the educational life. The self-theory may lead the teenager toward adaptive values, goals and motivations to make the teenager use one’s cognitive abilities for more success and cooperation. In this way, the purpose of this article is to offer a structural model for cognitive engagement based on informational style, mastery goal and performance-approach goals. The present study is a kind of non-experimental design. To speak more precisely, it is a type of correlations design which has analyzed a structural pattern of variables relationship. The sample size (the number of people taking part in study) is 630. The sample candidates are medical students of Sabzevar and Neyshaboor universities, who have been selected by a multi-stages/steps sampling process. Brzezinski identity style scales (IsI-3), Midgly et al achievement goal (PALS) and also motivational strategies for learning (MSLQ) were used to evaluate the research variables. The data were analyzed by structural pattern of the equations. The results indicated that informational style has got two effects on the cognitive engagement which are 1- A direct positive effect (0/23). 2-An indirect positive effect and more powerful (0/53) that indirect effect between two variable is through mastery goals (which is a mediator variable). Mastery goals make adolescent who have informational identity style and more purposeful in information searching. Mediator variable of mastery goals builds up stronger relationship between informational identity style and cognitive engagement

Removal of sulfadimethoxine antibiotic from aqueous solutions using carbon nanotubes

Abstract Background and aim: Antibiotics are a category of organic pollutants that can cause serious environmental problems through their disposal and uncontrolled release to the environment. The purpose of this study was to investigate the removal of sulfadimethoxine from aqueous solutions using carbon nanotubes. Materials and Methods: The present work was an experimental study in which the effects of different parameters, such as PH, time, doses of carbon nanotubes, and different concentrations of sulfadimethoxine, on the removal of antibiotic from solutions were examined. All experiments were carried out in a 100-mL reactor at laboratory temperature (24 ± 2 ° C) using a magnetic stirrer at 350 rpm. Results: The results showed that the maximum removal efficiency (94.5%) was occurred at pH = 6, adsorbent dosage 0.04 g, contact time of 30 min, and initial concentration of 20 mg/L. The findings on the effect of pH showed that the adsorption capacity increases with increasing pH, and at pH = 6, it reaches its maximum and then decreases again. The extent of removal was increased by increasing the dose of carbon nanotubes and the optimum amount for initial concentration of 100 mg/L (50 mL) was 0.04 g. The amount of absorption increased with increasing contact time and the maximum absorption occurred when the contact time was 30 min. The sulfadimethoxine antibiotic isotherm followed the Langmuir isotherm model (R2 = 0.9800) and the pseudo-second-order kinetic model (R2 = 0.9937). Conclusion: The results showed that carbon nanotubes have a high potential for removal of sulfadimethoxine from aqueous solutions, due to its properties like its high surface area

Resilience and its relationship with exposure to violence in emergency nurses

Background: Workplace violence (WPV) is a detrimental factor affecting nurses' health and performance. Individual protective factors such as resilience can assist nurses in coping with and adapting to workplace adversity. Objectives: The present study was aimed to determine the relationship between resilience and exposure to WPV in emergency nurses. Methods: This cross-sectional study was carried out on 118 emergency nurses in Tabriz educational hospitals, Iran. The participants were selected through a convenience sampling method. A demographic questionnaire, the Conner-Davidson Resilience Scale, and the Modified Questionnaire of Workplace Violence in the health sector were used for data collection. The data were analyzed using descriptive statistics, logistic regression analysis, t-test, and one-way analysis of variance. Results: The mean resilience score of nurses was 25.05 ± 5.79 in the possible range of 0-40. Most of the cases of violence were verbal threats (80.5), and 56.7 of the exposures occurred during the night shift. Logistic regression showed that lower resilience predicted verbal threats (P = 0.001) and physical attacks (P = 0.038) against the individual. In addition to resilience, working on the night shift significantly predicted verbal threats (P = 0.008) against nurses. Conclusion: The resilience score was lower in nurses who exposed to violence. Empowerment programs are suggested to improve the resilience of nurses

Carbon quantum dot supported semiconductor photocatalysts for efficient degradation of organic pollutants in water: A review

Semiconductor photocatalyst mediated advanced oxidation processes are regarded as one of the most efficient technologies to mitigate organic pollutants in water. However, poor activity under visible light and the recombination of photogenerated electron and hole pairs hinder large scale applicability of semiconductor photocatalysts for water purification. The modification of semiconductor photocatalysts with carbon quantum dots (CQDs) is of high importance due to low toxicity, aqueous stability, enhanced surface area, economic feasibility, good biocompatibility and chemical inertness of CQDs. In this review, we highlight strategies to improve the activity of conventional semiconductor photocatalysts via coupling with CQDs. The enhanced photocatalytic activity of CQD modified narrow and wide band gap photocatalysts is due mainly to up-conversion photoluminescence (UPCL) and the electron reservoir properties of CQDs, while in the case of Z-scheme photocatalysts CQDs act as an electron mediator. Finally, a conclusive outlook and suggested research directions are provided to address challenges such as the inadequate separation of photoinduced charge carriers

Synthesis of Eu3+−doped ZnO/Bi2O3 heterojunction photocatalyst on graphene oxide sheets for visible light-assisted degradation of 2,4-dimethyl phenol and bacteria killing

We reported the immobilization of binary heterojunction Eu3+-ZnO/Bi2O3 over the surface of graphene oxide (GO) sheets by precipitation method to compose a visible light drive photocatalyst. The ternary nanocomposites were characterized by different spectral technique like FESEM, FTIR, XRD, XPS, EDX, HRTEM, UV–visible, PL, HPLC and LCMS analysis. The high specific surface area of 106.0 m2g-1 of Eu3+-ZnO/Bi2O3/GO nanocomposites was ascertained by BET adsorption-desorption isotherm. The nano-composite exhibit excellent photo-efficiency for the photodegradation of 2, 4-dimethyl phenol (DMP) under visible region and was almost completely mineralized in 100 min as compared to the bare and binary system. The mineralized products of DMP were analyzed by HPLC and LCMS analysis. The kinetic model suggests the degradation pathway obeys pseudo-first order kinetic. Their antibacterial property were assessed against E. coli bacteria and nearly 90% of gram negative bacteria were killed by using ternary photocatalyst as determined by CFU method. Also, Eu3+-ZnO/Bi2O3/GO nanocomposites possessed significant recycle efficiency up to six consecutive cycles which is beneficial to minimize the tariff. The improved photo-efficiency is due to the extension towards visible region, increase surface area, and high charge separation in ternary heterojunction