Controllability and Observability of Kronecker Product Sylvester System on Time Scales

The main objective in this paper is to present the necessary and sufficient conditions for complete controllability, complete observability associated with kronecker product Sylvester system on time scales.2000 Mathematics Subject Classification: 93B05,93B07,49K15

Effect of remote ischaemic conditioning on clinical outcomes in patients with acute myocardial infarction (CONDI-2/ERIC-PPCI): a single-blind randomised controlled trial.

BACKGROUND: Remote ischaemic conditioning with transient ischaemia and reperfusion applied to the arm has been shown to reduce myocardial infarct size in patients with ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PPCI). We investigated whether remote ischaemic conditioning could reduce the incidence of cardiac death and hospitalisation for heart failure at 12 months. METHODS: We did an international investigator-initiated, prospective, single-blind, randomised controlled trial (CONDI-2/ERIC-PPCI) at 33 centres across the UK, Denmark, Spain, and Serbia. Patients (age >18 years) with suspected STEMI and who were eligible for PPCI were randomly allocated (1:1, stratified by centre with a permuted block method) to receive standard treatment (including a sham simulated remote ischaemic conditioning intervention at UK sites only) or remote ischaemic conditioning treatment (intermittent ischaemia and reperfusion applied to the arm through four cycles of 5-min inflation and 5-min deflation of an automated cuff device) before PPCI. Investigators responsible for data collection and outcome assessment were masked to treatment allocation. The primary combined endpoint was cardiac death or hospitalisation for heart failure at 12 months in the intention-to-treat population. This trial is registered with ClinicalTrials.gov (NCT02342522) and is completed. FINDINGS: Between Nov 6, 2013, and March 31, 2018, 5401 patients were randomly allocated to either the control group (n=2701) or the remote ischaemic conditioning group (n=2700). After exclusion of patients upon hospital arrival or loss to follow-up, 2569 patients in the control group and 2546 in the intervention group were included in the intention-to-treat analysis. At 12 months post-PPCI, the Kaplan-Meier-estimated frequencies of cardiac death or hospitalisation for heart failure (the primary endpoint) were 220 (8·6%) patients in the control group and 239 (9·4%) in the remote ischaemic conditioning group (hazard ratio 1·10 [95% CI 0·91-1·32], p=0·32 for intervention versus control). No important unexpected adverse events or side effects of remote ischaemic conditioning were observed. INTERPRETATION: Remote ischaemic conditioning does not improve clinical outcomes (cardiac death or hospitalisation for heart failure) at 12 months in patients with STEMI undergoing PPCI. FUNDING: British Heart Foundation, University College London Hospitals/University College London Biomedical Research Centre, Danish Innovation Foundation, Novo Nordisk Foundation, TrygFonden

PERCEPTUAL MAPPING E-COMMERCE BERDASARKAN E-SERVICE QUALITY (Studi Deskriptif Kuantitatif Persepsi Konsumen Generasi Milenial di Yogyakarta atas Shopee, Tokopedia, Bukalapak, Lazada, dan Blibli Berdasarkan E-Service Quality)

Peningkatan tren penggunan e-commerce di kalangan masyarakat akibat pandemi Covid-19 yang melanda menyebabkan industri e-commerce berlombalomba melakukan inovasi dan beradu kreativitas dalam mengiklankan produknya. Ketatnya persaingan yang ada membuat kelima perusahan e-commerce yang mendominasi pasar Indonesia yaitu Shopee, Tokopedia, Bukalapak, Lazada, dan Blibli, gencar melakukan strategi pemasaran produk dan meningkatkan kualitas layanannya. Kualitas layanan e-commerce dapat menentukan berhasil tidaknya suatu e-commerce, maka dari itu penelitian ini bertujuan untuk mengetahui persepsi konsumen atas top five e-commerce B2C & C2C di Indonesia berdasarkan pengalaman para penggunanya atas kualitas pelayanan yang diberikan. Hasil penelitian diharapkan dapat menunjukan apa yang menjadi keunggulan dan kelemahan dari masing-masing platform e-commerce yang nantinya dapat dijadikan bahan evaluasi oleh kelima e-commerce maupun perusahaan e-commerce lainnya. Penelitian ini berjenis kuantitatif dan dilakukan dengan metode survei menggunakan kuesioner kepada 100 responden yang sesuai dengan kriteria yang telah ditentukan yaitu generasi milenial di Yogyakarta yang pernah menggunakan e-commerce Shopee, Tokopedia, Bukalapak, Lazada, dan Blibli. Data yang diperoleh dianalisis menggunakan teknik analisis arithmetic mean dan perceptual mapping. Hasil dari penelitian ini menunjukan bahwa Tokopedia merupakan ecommerce yang memiliki persepsi paling baik menurut pengguna berdasarkan kualitas layanan online (e-service quality) dibandingkan keempat e-commerce lainnya. Kemudian diikuti Shopee pada peringkat kedua yang masih unggul dari Tokopedia pada beberapa atribut. Terdapat Blibli dan Lazada pada peringkat ketiga dan keempat yang bersaing secara ketat pada setiap atributnya dengan selisih penilaian yang tidak jauh. Pada peringkat terakhir terdapat e-commerce Bukalapak yang memiliki persepsi paling buruk menurut penggunanya sehingga perlu meningkatkan kualitas layanannya secara keseluruhan karena berada pada posisi terbawah disetiap atribut

ANALISIS DAN PERANCANGAN SISTEM MANAJEMEN PT. GEMAH BERKAT USAHA DENGAN CUSTOMER RELATIONSHIP MANAGEMENT (CRM) BERBASIS WEB APPLICATION

ANALISIS DAN PERANCANGAN SISTEM MANAJEMEN PT. GEMAH BERKAT USAHA DENGAN CUSTOMER RELATIONSHIP MANAGEMENT (CRM) BERBASIS WEB APPLICATION - Analisis, Perancangan, Web Application, Customer Relationship Managemen

Theoretical and experimental investigation on laminar boundary layer under cnoidal wave motion

Land-use intensification is a major driver of biodiversity loss. However, understanding how different components of land use drive biodiversity loss requires the investigation of multiple trophic levels across spatial scales. Using data from 150 agricultural grasslands in central Europe, we assess the influence of multiple components of local- and landscape-level land use on more than 4,000 above- and belowground taxa, spanning 20 trophic groups. Plot-level land-use intensity is strongly and negatively associated with aboveground trophic groups, but positively or not associated with belowground trophic groups. Meanwhile, both above- and belowground trophic groups respond to landscape-level land use, but to different drivers: aboveground diversity of grasslands is promoted by diverse surrounding land-cover, while belowground diversity is positively related to a high permanent forest cover in the surrounding landscape. These results highlight a role of landscape-level land use in shaping belowground communities, and suggest that revised agroecosystem management strategies are needed to conserve whole-ecosystem biodiversity. Land use intensification is a major driver of biodiversity change. Here the authors measure diversity across multiple trophic levels in agricultural grassland landscapes of varying management, finding decoupled responses of above- and belowground taxa to local factors and a strong impact of landscape-level land use