Plastic (wire-combed) grooving of a slip-formed concrete runway overlay at Patrick Henry Airport: An initial evaluation

A wire-comb technique is described for transversely grooving the surface of a freshly laid (plastic state) slip-formed concrete overlay installed at Patrick Henry Airport. This method of surface texturing yields better water drainage and pavement skid resistance than that obtained with an older conventional burlap drag concrete surface treatment installed on an adjacent portion of the runway

Response of Shallots of Batu Ijo Variety on Doses of N And K Fertilizers

Shallots (Allium cepa var. Aggregatum L) have many varieties that can be grown in the highlands and lowlands and one of them is the Batu Ijo variety. Nutrients N and K play an important role for plant needs. This research was conducted from March to June 2019 in Medan Baru, Bengkulu City. This study used a completely randomized design with two factors. The first factor was the dose of N fertilizer and the second factor was the application of K fertilizer. The application of N fertilizer had a significant effect on the number of shallots at week 2. The Urea dose given decreases the number of spring onions. For the best treatment at plant height is the treatment of Urea 300 kg/ha and KCl 50 kg/ha. Plant growth from week 2 to 5 increased significantly. The application of K fertilizer has an effect on the number of shallots at week 2 and the number of tubers. The higher the plant age, the more the number of leaves produced, but at higher doses, the number of leaves and the number of tubers decreased. The best treatment for the number of leaves produced was Urea 300 kg/ha and without giving KCl. For the best treatment of fresh plant weight, namely Urea 300 kg/ha and KCl 150 kg/ha, the best treatment fresh tuber weight was Urea 300 kg/ha and KCl 150 kg/ha, for tuber diameter the best treatment was 200 kg/ha of urea and KCl 100 kg/ha and for the number of tubers of Urea 0 kg/ha and KCl 150 kg/ha.Keywords: shallots, N fertilizer, K fertilize

Fast Matrix Factorization for Online Recommendation with Implicit Feedback

This paper contributes improvements on both the effectiveness and efficiency of Matrix Factorization (MF) methods for implicit feedback. We highlight two critical issues of existing works. First, due to the large space of unobserved feedback, most existing works resort to assign a uniform weight to the missing data to reduce computational complexity. However, such a uniform assumption is invalid in real-world settings. Second, most methods are also designed in an offline setting and fail to keep up with the dynamic nature of online data. We address the above two issues in learning MF models from implicit feedback. We first propose to weight the missing data based on item popularity, which is more effective and flexible than the uniform-weight assumption. However, such a non-uniform weighting poses efficiency challenge in learning the model. To address this, we specifically design a new learning algorithm based on the element-wise Alternating Least Squares (eALS) technique, for efficiently optimizing a MF model with variably-weighted missing data. We exploit this efficiency to then seamlessly devise an incremental update strategy that instantly refreshes a MF model given new feedback. Through comprehensive experiments on two public datasets in both offline and online protocols, we show that our eALS method consistently outperforms state-of-the-art implicit MF methods. Our implementation is available at https://github.com/hexiangnan/sigir16-eals.Comment: 10 pages, 8 figure

Dynamic Matrix Factorization with Priors on Unknown Values

Advanced and effective collaborative filtering methods based on explicit feedback assume that unknown ratings do not follow the same model as the observed ones (\emph{not missing at random}). In this work, we build on this assumption, and introduce a novel dynamic matrix factorization framework that allows to set an explicit prior on unknown values. When new ratings, users, or items enter the system, we can update the factorization in time independent of the size of data (number of users, items and ratings). Hence, we can quickly recommend items even to very recent users. We test our methods on three large datasets, including two very sparse ones, in static and dynamic conditions. In each case, we outrank state-of-the-art matrix factorization methods that do not use a prior on unknown ratings.Comment: in the Proceedings of 21st ACM SIGKDD Conference on Knowledge Discovery and Data Mining 201

PENGARUH TERAPI RENDAM KAKI AIR HANGAT JAHE TERHADAP PENURUNAN TEKANAN DARAH PADA PASIEN HIPERTENSI DI PUSKESMAS LIMBOTO

Hipertensi atau tekanan darah tinggi adalah masalah kesehatan yang banyak ditemukan di masyarakat. Tujuan penelitiian untuk mengetahui apakah ada pengaruh terapi rendam kaki air hangat jahe terhadap penurunan tekanan darah pada pasien hipertensi. Metode penelitian kuantitatif menggunakan Quasi eskperimental pre-post test. Teknik pengambilan sampel purposive sampling. Sampel penelitian ini adalah 30 responden terbagi atas 2 kelompok yaitu intervensi dan kelompok kontrol. Hasil penelitian menunjukkan rata-rata tekanan darah sebelum pada kelompok intervensi sistolik 154.67 mmHg, diastolik 96.67 mmHg, dan sesudah rata-rata tekanan darah sistolik 124.67 mmHg dan diastolik 82.00 mmHg, sedangkan rata-rata tekanan darah pada kelompok kontrol sistolik 143.33 mmHg, diastolik 98.00 mmHg dan sesudah sistolik 140.00 mmHg, diastolik 96.00 mmHg. Hasil uji statistik di dapatkan bahwa nilai p pada kelompok intervensi yaitu 0,000 (<0,05), sedangkan pada pada kelompok kontrol nilai p yaitu 0.096 (>0.05) terdapat pengaruh yang signifikan penurunan tekanan darah pada kelompok intervensi. Dapat disimpulkan bahwa air hangat jahe mengandung minyak atsiri dan dapat menstimulus sirkulasi darah, terdapat senyawa gingerol yang berfungsi untuk memperlebar pembuluh darah dan melancarkan peredaran darah juga merangsang saraf yang ada pada kaki untuk mengaktifkan syaraf parasimpatis, sehingga menyebabkan perubahan pada tekanan darah. Sehingga diharapkan terapi rendam kaki air hangat jahe dilakukan pasien hipertensi sehingga terjadi penurunan tekanan darah.   &nbsp

Sources of support and expatriation:a multiple stakeholder perspective of expatriate adjustment and performance in Malaysia

This research tests the role of perceived support from multinational corporations and host-country nationals for the adjustment of expatriates and their spouses while on international assignments. The investigation is carried out with matched data from 134 expatriates and their spouses based in foreign multinationals in Malaysia. The results highlight the different reliance on support providers that expatriates and their accompanying spouses found beneficial for acclimatizing to the host-country environment. Improved adjustment in turn was found to have positive effects on expatriates' performance. The research findings have implications for both international human resource management researchers and practitioners

Kesulitan Koneksi Matematis Siswa dalam Penyelesaian Soal pada Materi Lingkaran di SMP

: This research is titled "connection difficulties in students mathematical problem-solving on a circle in the SMP material". The purpose of this research is to examine difficulties or give a description of the mathematical connections and the factors that cause difficulties in the completion of students mathematical connections about the material in class VIII circle SMP Negeri 2 Sungai Raya. This research uses a descriptive case study form. Subjects were six (6) A person eighth grade students of SMP Negeri 2 Sungai Raya who have difficulty in solving the circle material. The result analysis of data show that the 6 (six) students who studied mathematical connection trouble caused by: (1) low ability of ability representation, (2) low ability of reasoning ability, (3) low ability of problem solving abilities, (4) low ability of launch procedures; (5) low ability of conceptual understanding, and (6) weak memor

Transgenic Bt Corn: Is This the Future of Insect Pest Management?

In a few short years, it is expected that a dramatically different management tactic will be ready for field corn producers to combat the ravages of the European com borer. This new tactic currently goes by a variety of names including genetically-engineered com, transgenic com, Bt com, or transgenic Bt com. But whatever name eventually is used, it offers a hope that biotechnology will deliver a corn plant that is resistant to leaf feeding, stalk tunneling, dropped ears and reduced grain yields caused by the European corn borer

PERTUMBUHAN BENIH KELAPA SAWIT (Elaeis guineensis Jacq.) PADA MEDIA TANAM KOMBINASI ANTARA GAMBUT, TANAH LAPISAN ATAS DAN ARANG SEKAM PADI DI PEMBIBITAN AWAL/The Growth of Oil Palm Seeds (Elaeis guineensis Jacq.) on Combinated Media of Peat, Topsoil an

Growth medium is very important to produce good quality of seedling. The use of different growing media would give a different influence on plant colonization, as each medium type has different nutrient content.  The purpose of the study was to evaluate the growth of oil palm seedlings in a variety of growing media composition in pre-nursery. The research was carried out in smallholder estate of Keramasan Karyajaya Village, Kertapati Sub district of South Sumatra from September 2017 until December 2017. The design used was completely randomized design with growing media (M) as treatments: M0 (topsoil/controls), M1 (peat), M2 (topsoil+rice husk charcoal), M3 (peat + rice husk charcoal), M4 (topsoil+peat+rice husk charcoal). The observed variables were plant height number of leaves, greenness of leaves, and the number of survival seeds. The results of this study showed that growth media significantly affected plant height and the greenness of leaves. The percentage of oil palm seeds growing on peat media increase about 13% compared to the top soil medium. So, peat moss media can be used as an alternative media to replace the top soil media.Key words: topsoil, peat, rice husk charcoal, oil palm, pre-nursery AbstrakMedia pembibitan sangat penting dalam menghasilkan bibit yang berkualitas baik. Penggunaan media tanam yang berbeda-beda diduga akan memberikan pengaruh yang berbeda terhadap pertumbuhan tanaman, karena setiap jenis media tanam memiliki kandungan unsur hara yang berbeda.  Tujuan penelitian adalah mengevaluasi pertumbuhan benih kelapa sawit pada berbagai komposisi media tanam di pembibitan awal. Penelitian dilaksanakan di perkebunan rakyat Desa Keramasan Karyajaya, Kecamatan Kertapati, Sumatera Selatan dari bulan September 2017 sampai Desember 2017. Rancangan yang digunakan adalah rancangan acak lengkap (RAL) dengan perlakuan media tanam (M): M0 (Tanah lapisan atas/kontrol), M1 (Gambut), M2 (Tanah lapisan atas+arang sekam padi), M3 (Gambut+arang sekam padi), M4 (Tanah lapisan atas+gambut+arang sekam padi). Peubah yang diamati meliputi tinggi tanaman, jumlah daun, tingkat kehijauan daun, dan jumlah benih yang hidup.  Hasil penelitian menunjukkan bahwa perlakuan media tanam berpengaruh nyata terhadap tinggi tanaman dan tingkat kehijauan. Persentase tumbuh benih kelapa sawit pada media gambut naik sekitar 13% jika dibandingkan dengan media tanah lapisan atas, sehingga media gambut dapat digunakan sebagi media alternatif untuk menggantikan media tanah lapisan atas.Kata kunci: Tanah lapisan atas, gambut, arang sekam padi, kelapa sawit, pembibitan awa