Improving prediction intervals using measured solar power with a multi-objective approach

Prediction Intervals are pairs of lower and upper bounds on point forecasts and are useful to take into account the uncertainty on predictions. This article studies the influence of using measured solar power, available at prediction time, on the quality of prediction intervals. While previous studies have suggested that using measured variables can improve point forecasts, not much research has been done on the usefulness of that additional information, so that prediction intervals with less uncertainty can be obtained. With this aim, a multi-objective particle swarm optimization method was used to train neural networks whose outputs are the interval bounds. The inputs to the network used measured solar power in addition to hourly meteorological forecasts. This study was carried out on data from three different locations and for five forecast horizons, from 1 to 5 h. The results were compared with two benchmark methods (quantile regression and quantile regression forests). The Wilcoxon test was used to assess statistical significance. The results show that using measured power reduces the uncertainty associated to the prediction intervals, but mainly for the short forecasting horizonsThis work was funded by the Spanish Ministry of Science under contract ENE2014-56126-C2-2-R (AOPRIN-SOL project)

Relação entre o ruído e as variáveis do processo produtivo na indústria extractiva a céu aberto

O ruído está intimamente associado a todos os processos industriais, sendo os ligados à indústria extractiva dos mais ruidosos. O presente artigo pretende equacionar o estado da arte relativamente a relações entre a variável ocupacional – Ruído e as inerentes ao processo produtivo. Teve por base uma pesquisa bibliográfica, desenvolvida através da combinação de um conjunto de palavras-chave, pré-definidas, diretamente ligadas às varáveis a tratar. Da pesquiza efectuada pode-se concluir que as variáveis inerentes aos equipamentos e respetivas operações são as mais significativas. Foi também verificado que a variável ruído se encontra muitas vezes associada a vibrações transmitidas aos sistemas mão-braço e corpo inteiro e a substâncias ototóxicas. Tal, entre outras causas, faz com que aumente a dificuldade em classificar a PAIR como uma doença profissional. Por último, por envolver custos e redução na produtividade, verificou-se ainda que os trabalhadores com PAIR são mais vulneráveis a acidentes de trabalho

Palynological, physicochemical, and microbiological attributes of organic lavender (Lava ndula stoechas) honey from Portugal

At the present time, the quality, integrity, sanitation, and nutritional value of honeys receive attention on an international level due to the increasing content of chemicals in the aforementioned matrix. The present study aims to characterize organic honey (n=73) from Northeast Portugal, with respect to floral nectar origin, physicochemical parameters, microbial safety, and commercial quality. All organic honey samples can be classified as monofloral lavender (Lavandula stoechas L.), exceed in quality the international physicochemical standards, and show low microbiological counts (yeast, moulds, and aerobic mesophiles), with negative results in respect to faecal coliforms, Salmonella, and sulphite-reducing clostridia. Correlating the palynological, physicochemical, and microbiological results is necessary in order to check the authenticity, quality, and sanitation of honey

Organic honey from Trás-os-Montes region (Portugal): chemical, palynological, microbiological and bioactive compounds characterization

At the present time, the quality, integrity, sanitation and nutritional value of honeys receive attention on an international level due to the increasing content of chemicals in the aforementioned matrix. This work was conducted to evaluate the quality of 75 organic honey samples from the Trás-Os-Montes region (Portugal). Mean values obtained for physico-chemical parameters were: pH 3.7; 15.6% moisture; 0.26 mS/cm electrical conductivity; 0.25% ash; 1.1 mg/kg HMF; 15.3 Gothe diastase activity; 40.3 meq/kg free acidity; 67.8% invert sugars and 2.7% apparent sucrose. All honey samples can be classified as monofloral Erica sp., as showed by pollen features. The amounts of phenols and flavonoids in the samples were also determined. In respect to sanitary quality (fecal coliforms) and safety (sulfite-reducing clostridia and Salmonella), all organic honey samples were negative. Furthermore, yeast and molds were detected in low counts, with mean values obtained of 5.5 cfu/g and the value of total aerobic mesophiles obtained from honeys was established in 1.3 102 cfu/g ± 7.5 101 cfu/g. The levels of flavonoids had a stronger impact on both mesophiles (p = 0.0004) and molds (p = 0.0138) than the sucrose concentration (p = 0.001 and 0.0278; respectively). The results reported in this study should be introduced in the organic honey label, and may help beekeepers, the industry, researchers and consumers better understand honey properties

Physicochemical and pollen analysis of Local honeys from the Lima Valley (Portugal)

An evaluation was done on the physicochemical quality of nineteen (n=19) Apis mellifera honeys produced in the Lima Valley, Portugal. The rural landscape of the Lima Valley is valuable in social, environmental and economic terms and its conservation and preservation are essential. The evaluated physicochemical characteristics were: moisture, ash, electrical conductivity, pH, hydroxymethylfurfural (HMF), free acidity, apparent sucrose, reducing sugars and diastase activity. All honey samples met the International physicochemical quality standards. A short study of pollen source was done by acetolisis method. The families Fabaceae and Rosaceae were found with 6 and 2 pollen types each respectively. The most important pollen source is Erica, moreover two samples are listed as Erica monofloral honey

Sosialisasi Undang-Undang Administrasi Kependudukan

Undang-Undang Nomor : 23 Tahun 2006 tentang Administrasi Kependudukandisempurnakan dengan ditetapkannya Undang-Undang Nomor : 24 Tahun 2013tentang Perubahan Undang-Undang Nomor : 23 Tahun 2006 tentang AdministrasiKependudukan. Dalam perubahan ini telah diatur program digitalisasiadministrasi kependudukan, misalnya dengan adanya program e-KTP, KartuKeluarga dan lainnya. Dan juga program digitalisasi di bidang Kependudukan danCatatan Sipil (DUKCAPIL). Tujuan kegiatan ini adalah untuk memberikanmateri-materi yang berkenaan dengan administrasi kependudukan terutama yangberkenaan dengan hak dan kewajiban warga negara selaku penduduk, maupuntentang bagaimana telah terjadinya paradigma pelaksanaan administrasikependudukan pada saat sebelum era digitalisasi maupun setelah era digitalisasi.Apa yang disampaikan dalam kegiatan ini diharapkan dapat disebarluaskankepada warga yang lain, setidaknya yang berada di wilayah lingkungan terdekatyaitu di lingkungan Rukun Warga (RW) Kelurahan Pamulang Barat, KecamatanPamulang Kota Tangerang Selatan. Harapan yang ingin dicapai dalam kegiatanini agar mitra mendapatkan pengetahuan dan wawasan mengenaikependudukan.Undang-Undang Nomor : 23 Tahun 2006 tentang AdministrasiKependudukan disempurnakan dengan ditetapkannya UndangUndang Nomor : 24Tahun 2013 tentang Perubahan Undang-Undang Nomor : 23 Tahun 2006 tentangAdministrasi Kependudukan. Dalam perubahan ini telah diatur programdigitalisasi administrasi kependudukan, misalnya dengan adanya program e-KTP,Kartu Keluarga dan lainnya. Dan juga program digitalisasi di bidangKependudukan dan Catatan Sipil (DUKCAPIL).Kata kunci : Pengabdian, Administrasi Kependuduka

PENTINGNYA PEMAHAMAN TENTANG KEMANFAATAN DAN KEMUDARATAN MEDIA SOSIAL

Seiring dengan zaman yang serba modern ini, banyak dijumpai nyinyiran, hinaan, cacian, serta makian beredar di mana-mana khususnya di media sosial. Padahal konsekuensi dari perbuatan itu akan didapati konflik panjang antara pelaku dan korban. Bahkan ghibah yang sudah jelas-jelas dilarang agama, malah sudah menjadi tradisi pameran di media sosial. Bangsa kita sudah tidak asing lagi dengan adanya ghibah yang beredar di media sosial. Mulai meng-ghibahkan tokoh politik, tokoh ekonomi, bahkan tokoh agama sekalipun. Fenomena seperti itu membuat para pendukung korban semakin membenci pelaku dan klimaks pun tak bisa dihindari. Hingga akhirnya muncul perpecahan sesama saudara. Hal tersebut terjadi akibat kurang cerdasnya seseorang dalam menggunakan media sosial. Bahaya ghibah secara langsung sudah termaktub dalam al-Quran surat al-Hujurat ayat 12 Allah berfirman: “Wahai orang-orang yang beriman! Jauhilah banyak dari prasangka, sesungguhnya sebagian prasangka itu dosa dan janganlah kamu mencaricari kesalahan orang lain dan janganlah ada di antara kamu yang menggunjing sebagian yang lain. Apakah ada di antara kamu yang suka memakan daging saudaranya yang sudah mati? Tentu kamu merasa jijik. Dan bertakwalah kepada Allah, sesungguhnya Allah Maha Penerima tobat, Maha Penyayang.” Adapun, pelaksanaan kegiatan terbagi dari beberapa kategorisasi seperti: 1. Tahap Pra Pelaksanaan: a. bahwa tim pengabdi men-survey lokasi ke Desa Pedeslohor, Kecamatan Adiwerna, Kabupaten Tegal guna berdiskusi perihal jadwal, peserta dan tema. b. bahwa tim pengabdi, mempersiapakan peralatan dan perlengkapan seperti laptop, spidol, dan papan tulis/kertas besar, proyektor dan plakat penghargaan kepada tuan rumah serta konsumsi untuk seluruh peserta dan pihak terkait. c. bahwa tim menghitung dan merencanakan anggaran belanja termasuk modal awal, post biaya operasional dan biaya lain yang dianggap perlu. 2. Tahap Pelaksanaan: bahwa tim pengadbi akan menggunakan metode ceramah, metode tanya-jawab interaktif dan menggunakan metode role playing; 3. Tahap Paska Pelaksanaan: bahwa tim akan membuat laporan akhir kepada tiga pihak yakni: Pulau Panggang, Kepulauan Seribu, tim pengabdi dan pihak Lembaga Penelitian dan Pengadbian Masyarakat.Kata Kunci : Media Sosial, Manfaat, Mudara

Evaluation of the effect of hidrogen peroxide (H2O2) in the antimicrobial activity of honey

Bee hive products such as honey, propolis and royal jelly have been extensively used in the past. Their use in Medicine dates back at least 4000 years, to Ancient Egypt where it was used for the treatment of wounds among other conditions. With the discovery of modern antibiotics in the early 20th century, the use of many effective products of traditional medicine was discontinued. Although modern antibiotics use has meant a decrease in mortality, its widespread use has led to the emergence of antibiotic-resistant bacteria and fungi decreasing the treatment options. This led to an increase research of antimicrobial activity of honey as possible alternatives at least for dermatological or wound applications. Honey is a complex substance made up of hundreds of different compounds. Honey’s antimicrobial activity was initially attributed to the high sugar content and low pH and later to the activity of glucose oxidase which transforms glucose and water into hydrogen peroxide and gluconic acid upon honey dilution, which is responsible for the antimicrobial activity in most honeys. Monofloral heather (Erica sp.) honey samples harvested in Portugal according to European organic apiculture standards, were analyzed to test antibacterial activity against Bacillus cereus, Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. A catalase solution was added to honey samples to inactive the hydrogen peroxide and then the honeys were tested to see if there was still any antibacterial activity. It was found out that the presence of catalase induced a significant increase of the Minimum Inhibitory Concentration, suggesting that the antimicrobial activity of honey was mainly due to the presence of peroxide. The non-peroxide antimicrobial activity may be related with the concentration of phenolic compounds. In addition it was verified a significant interaction between the catalase effect and the different microorganisms. Since antimicrobial properties of honey depend strongly on plant source and geographic origin, together with other factors such as climatic conditions, soil type, and beekeeper activities, the characterization of antimicrobial properties of honeys of diverse origins still appears to be a sound research priority to obtain a reliable data on this valuable beehive product for medical purposes