Collaborative and Cooperative Learning in Malaysian Mathematics Education

Collaborative and cooperative learning studies are well recognized in Malaysian mathematics education research. Cooperative learning is used to serve various ability students taking into consideration of their level of understanding, learning styles, sociological backgrounds that develop students' academic achievement and skills, and breeze the social harmony among students of different ethnic backgrounds. Besides academic achievement, process skills and values are required to extend the social harmony among students in today's multiethnic schools. Therefore, teachers are expected to find the pedagogy that enables students to learn academic knowledge and professional skills to face the challenges in their everyday lives. The Malaysian scholars, based on the findings of their cooperative learning studies, emphasized the use of cooperative learning as an effective pedagogy with the aim to improve students' mathematics achievement and communication skills. This paper describes the role of collaborative and cooperative learning to the development of students' mathematics achievement along with their communication skills and with significant integration of values in Malaysian mathematics education

Collaborative and Cooperative Learning in Malaysian Mathematics Education

Collaborative and cooperative learning studies are well recognized in Malaysian mathematics education research. Cooperative learning is used to serve various ability students taking into consideration of their level of understanding, learning styles, sociological backgrounds that develop students' academic achievement and skills, and breeze the social harmony among students of different ethnic backgrounds. Besides academic achievement, process skills and values are required to extend the social harmony among students in today's multiethnic schools. Therefore, teachers are expected to find the pedagogy that enables students to learn academic knowledge and professional skills to face the challenges in their everyday lives. The Malaysian scholars, based on the findings of their cooperative learning studies, emphasized the use of cooperative learning as an effective pedagogy with the aim to improve students' mathematics achievement and communication skills. This paper describes the role of collaborative and cooperative learning to the development of students' mathematics achievement along with their communication skills and with significant integration of values in Malaysian mathematics education

Strategi Media Relations PT. Pelabuhan Tanjung Priok Dalam Menanggapi Krisis

PT. Pelabuhan Indonesia II (Persero) sebagai salah satu Badan Usaha Milik Negara yang bergerak pada bidang kepelabuhanan ini memiliki permasalahan internal Perusahaan yaitu Direktur Utama Richard Joost Lino yang terdakwa sebagai tersangka kasus korupsi mobile crane Pelindo II. Krisis mulai menjadi ancaman citra Perusahaan maupun anak Perusahaannya, PT. Pelabuhan Tanjung Priok, yaitu sejak pemberitaan permasalahan ini tersebar luas di media cetak maupun elektronik pada bulan Agustus 2015 mengenai penggeledahan kantor Direktur Utama Pelindo II oleh Penyidik Bareskrim Polri. Metode yang digunakan pada penelitian ini yaitu metode kualitatif deskriptif dengan menggunakan teknik in-depth interview, observasi langsung penelitian di PT. Pelabuhan Tanjung Priok dan juga didukung oleh data dokumentasi dari Perusahaan. Tujuan dari penelitian ini yaitu untuk mengetahui bagaimana strategi media relations PT. Pelabuhan Tanjung Priok dalam menanggapi krisis yang dihadapi oleh holding company. Berdasarkan hasil pengelolahan data, maka dapat diketahui bahwa kaitan antara kegiatan humas anak Peruaahaan dengan holding company yaitu saling mendukung dan membantu segala kegiatan yang dilakukan oleh humas holding company. Namun, pada saat terjadi krisis, humas PT. Pelabuhan Tanjung Priok tidak ikut berkontribusi banyak dalam penanganan krisis melainkan hanya membantu dalam penyebaran informasi yang positif dan benar kepada media cetak maupun elektronik. DOI: 10.24198/jkk.vol4n2.1

Modeling user rating preference behavior to improve the performance of the collaborative filtering based recommender systems

One of the main concerns for online shopping websites is to provide efficient and customized recommendations to a very large number of users based on their preferences. Collaborative filtering (CF) is the most famous type of recommender system method to provide personalized recommendations to users. CF generates recommendations by identifying clusters of similar users or items from the user-item rating matrix. This cluster of similar users or items is generally identified by using some similarity measurement method. Among numerous proposed similarity measure methods by researchers, the Pearson correlation coefficient (PCC) is a commonly used similarity measure method for CF-based recommender systems. The standard PCC suffers some inherent limitations and ignores user rating preference behavior (RPB). Typically, users have different RPB, where some users may give the same rating to various items without liking the items and some users may tend to give average rating albeit liking the items. Traditional similarity measure methods (including PCC) do not consider this rating pattern of users. In this article, we present a novel similarity measure method to consider user RPB while calculating similarity among users. The proposed similarity measure method state user RPB as a function of user average rating value, and variance or standard deviation. The user RPB is then combined with an improved model of standard PCC to form an improved similarity measure method for CF-based recommender systems. The proposed similarity measure is named as improved PCC weighted with RPB (IPWR). The qualitative and quantitative analysis of the IPWR similarity measure method is performed using five state-of-the-art datasets (i.e. Epinions, MovieLens-100K, MovieLens-1M, CiaoDVD, and MovieTweetings). The IPWR similarity measure method performs better than state-of-the-art similarity measure methods in terms of mean absolute error (MAE), root mean square error (RMSE), precision, recall, and F-measure

Produção de antissoro policlonal utilizando a proteína capsidial recombinante do Rupestris stem pitting-associated virus.

O Rupestris stem pitting-associated virus (RSPaV) é o agente causal das caneluras do lenho da videira. Este trabalho teve como objetivo produzir antissoro policlonal a partir da proteína capsidial (CP) recombinante do RSPaV e avaliar a sua especificidade e sensibilidade. O gene da CP do RSPaV, com 780pb, foi previamente caracterizado. Esse gene foi subclonado no sítio de restrição EcoRI, no vetor de expressão pRSET-B e o plasmídeo recombinante foi utilizado para induzir a expressão da CP em Escherichia coli. A CP, ligada a uma cauda de seis histidinas, foi purificada por meio de cromatografia de afinidade em coluna de Ni-NTA a partir do extrato de proteínas totais extraídas de E. coli. A identidade da proteína purificada foi confirmada em SDS-PAGE e Western blot, utilizando-se anticorpos comerciais contra a cauda de seis histidinas. A CP recombinante expressada in vitro apresentou massa molecular de cerca de 31kDa. A proteína purificada foi quantificada e 2,55mg foram utilizados para a imunização de um coelho. O antissoro policlonal obtido reagiu com diferentes isolados deste vírus, extraídos de videiras em ELISA indireto.Nota técnica

Performance Evaluation of Energy Harvesting Method on Intelligent Wearable Travel Aid Device for Blind Person

The intelligent wearable travel aid device has been developed for blind person usage for traveling purposes. The intelligent wearable travel aid device will be used along with the long cane that is usually used to detect any obstructions around the blind person. However, the problem on power supply to supply the electrical energy for the intelligent wearable travel aid device to work properly always been occurred. In order to fit the energy harvesting device on the intelligent wearable travel aid device, the comparison of the solar panel and photodiode is done. The performance evaluation to compare theenergy harvesting method on the developed intelligent wearable travel aid device for blind person has been conductedbased on the experiment result. The photodiode is proposed in this study due to small size and easy to arrange on top of developed wearable travel aid device compared to the solar panel which big size but commonly used as energy harvesting device. Consequently, the experimental result of the intelligent wearable travel aid device in terms of voltage, current and light intensity for the improved version with different type of configuration is proven respectively

A real-world exploration into clinical outcomes of direct oral anticoagulant therapy in people with chronic kidney disease: a large hospital-based study

Background There is limited evidence to support definite clinical outcomes of direct oral anticoagulant (DOAC) therapy in chronic kidney disease (CKD). By identifying the important variables associated with clinical outcomes following DOAC administration in patients in different stages of CKD, this study aims to assess this evidence gap. Methods An anonymised dataset comprising 97,413 patients receiving DOAC therapy in a tertiary health setting was systematically extracted from the multidimensional electronic health records and prepared for analysis. Machine learning classifiers were applied to the prepared dataset to select the important features which informed covariate selection in multivariate logistic regression analysis. Results For both CKD and non-CKD DOAC users, features such as length of stay, treatment days, and age were ranked highest for relevance to adverse outcomes like death and stroke. Patients with Stage 3a CKD had significantly higher odds of ischaemic stroke (OR 2.45, 95% Cl: 2.10–2.86; p = 0.001) and lower odds of all-cause mortality (OR 0.87, 95% Cl: 0.79–0.95; p = 0.001) on apixaban therapy. In patients with CKD (Stage 5) receiving apixaban, the odds of death were significantly lowered (OR 0.28, 95% Cl: 0.14–0.58; p = 0.001), while the effect on ischaemic stroke was insignificant. Conclusions A positive effect of DOAC therapy was observed in advanced CKD. Key factors influencing clinical outcomes following DOAC administration in patients in different stages of CKD were identified. These are crucial for designing more advanced studies to explore safer and more effective DOAC therapy for the population