PENGARUH RIGHT ISSUE TERHADAP KINERJA KEUANGAN PERUSAHAAN PERSPEKTIF EKONOMI ISLAM (Study Pada Perusahaan yang terdaftar di Indeks Saham Syariah Indonesia periode 2014-2016)

ABSTRAK PENGARUH RIGHT ISSUE TERHADAP KINERJA KEUANGAN PERUSAHAAN PERSPEKTIF EKONOMI ISLAM (Study Pada Perusahaan Yang Terdaftar di Indeks saham syariah Indonesia periode 2014-2016) Oleh: Harry Iksanto Dengan adanya berbagai kemudahan di pasar modal, banyak perusahaan- perusahaan yang terdaftar di pasar modal berusaha memaksimalkan perolehan dana dari para investor sebagai upaya pengembangan usaha. Salah satunya adalah melalui right issue, motivasi perusahaan melakukan right issue di antaranya adalah kinerja keuangan,dan kinerja saham perusahaan. Setelah melakukan Right Issue investor tentu sangat berharap kinerja yang dimiliki oleh perusahaan menjadi lebih baik. Penelitian ini bertujuan untuk menguji apakah terdapat perbedaan dari kinerja keuangan perusahaan sebelum dan setelah adanya kebijakan right issue. Penelitian ini merupakan penelitian Kuantitatif dengan data sekunder, Penelitian ini dilakukan terhadap 24 sampel perusahaan yang melakukan kebijakan right issue di Indeks saham syariah Indonesia selama tahun 2014-2016. Variabel yang digunakan dalam variabel kinerja keuangan perusahaan yang diproksikan oleh CR (current ratio), DER (debt to equity ratio), ROE (return on equity), ROA (return on asset) dan PER (price earning ratio). Hasil penelitian ini menunjukkan bahwa tidak terdapat perbedaan signifikan variabel kinerja keuangan perusahaan sebelum dan sesudah pelaksanaan Right Issue, pada variabel CR (current ratio), DER (Dept to Equity Ratio), ROE (return on equity), ROA (return on asset) dan PER (price earning ratio) setelah dilakukan uji paired sample t- test tidak menunjukkan adanya perbedaan yang signifikan perusahaan sebelum dan sesudah melakukan right issue. Kata kunci : right issue, kinerja keuangan perusahaan

Pengaruh Penambahan Sari Belimbing Wuluh (Averrhoa bilimbi, L.) sebagai Pengasam terhadap Karakteristik Saus Tomat (Lycopersicum esculentum, Mill.)

Pengaruh Penambahan Sari Belimbing Wuluh (Averrhoa bilimbi, L.) sebagai Pengasam terhadap Karakteristik Saus Tomat (Lycopersicum esculentum, Mill.) Indah Kirna Sularsih, Sahadi Didi Ismanto dan Diana Silvy Abstrak Penelitian ini bertujuan untuk mengetahui pengaruh penambahan sari belimbing wuluh sebagai pengasam terhadap karakteristik dan tingkat penerimaan panelis pada saus tomat, sehingga diperoleh tingkat penambahan sari belimbing wuluh yang tepat. Penelitian ini dilakukan pada bulan Desember 2015 sampai Februari 2016 di Laboratorium Teknologi Hasil Pertanian, Fakultas Teknologi Pertanian, Universitas Andalas, Padang. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 3 kali ulangan. Perlakuan pada penelitian ini adalah penambahan sari belimbing wuluh sebanyak 0,6%, 0,9%, 1,2%, 1,5% dan 1,8%. Hasil pengamatan dari masing-masing parameter dianalisis statistik dengan menggunakan ANOVA dan jika berpengaruh berbeda nyata maka dilanjutkan dengan uji Duncan’s New Multiple Range (DNMRT) pada taraf 5%. Hasil penelitian menunjukkan tingkat penambahan sari belimbing wuluh memberikan pengaruh berbeda nyata terhadap kadar air, nilai pH, total asam, total padatan terlarut, vitamin C, dan viskositas. Akan tetapi memberikan pengaruh tidak berbeda nyata terhadap likopen, angka lempeng total dan kapang khamir. Tingkat penambahan sari belimbing wuluh yang tepat berdasarkan tingkat penerimaan panelis adalah perlakuan A (penambahan sari belimbing wuluh 0,6%) dengan kriteria kadar air 84,48 %, nilai pH 4,49, total asam 0,82 %, total padatan terlarut 17,470Brix, vitamin C 20,31 mg/100 g, likopen 20,96 mg/100 g, viskositas 20,33 dPa.s, angka lempeng total 1,9 x 102 koloni/g, kapang khamir 4,7 x 101 koloni/g dan tingkat kesukaan panelis (warna 3,37, aroma 3,27, rasa 3,67 dan tekstur 3,93). Kata Kunci- tomat, belimbing wuluh, saus toma

Josephson effect in junctions of conventional and topological superconductors

We present a theoretical analysis of the equilibrium Josephson current-phase relation in hybrid devices made of conventional s-wave spin-singlet superconductors (S) and topological superconductor (TS) wires featuring Majorana end states. Using Green's function techniques, the topological superconductor is alternatively described by the low-energy continuum limit of a Kitaev chain or by a more microscopic spinful nanowire model. We show that for the simplest S-TS tunnel junction, only the s-wave pairing correlations in a spinful TS nanowire model can generate a Josephson effect. The critical current is much smaller in the topological regime and exhibits a kink-like dependence on the Zeeman field along the wire. When a correlated quantum dot (QD) in the magnetic regime is present in the junction region, however, the Josephson current becomes finite also in the deep topological phase as shown for the cotunneling regime and by a mean-field analysis. Remarkably, we find that the S-QD-TS setup can support $\varphi_0$-junction behavior, where a finite supercurrent flows at vanishing phase difference. Finally, we also address a multi-terminal S-TS-S geometry, where the TS wire acts as tunable parity switch on the Andreev bound states in a superconducting atomic contact.Comment: 15 pages, 9 figures, to be published in Beilstein Journal of Nanotechnology, thematic series "Topological Materials

Boundary Green's function approach for spinful single-channel and multichannel Majorana nanowires

The boundary Green's function (bGF) approach has been established as a powerful theoretical technique for computing the transport properties of tunnel-coupled hybrid nanowire devices. Such nanowires may exhibit topologically nontrivial superconducting phases with Majorana bound states at their boundaries. We introduce a general method for computing the bGF of spinful multi-channel lattice models for such Majorana nanowires, where the bGF is expressed in terms of the roots of a secular polynomial evaluated in complex momentum space. In many cases, those roots, and thus the bGF, can be accurately described by simple analytical expressions, while otherwise our approach allows for the numerically efficient evaluation of bGFs. We show that from the behavior of the roots, many physical quantities of key interest can be inferred, e.g., the value of bulk topological invariants, the energy dependence of the local density of states, or the spatial decay of subgap excitations. We apply the method to single- and two-channel nanowires of symmetry class D or DIII. In addition, we study the spectral properties of multi-terminal Josephson junctions made out of such Majorana nanowires.Comment: 16 pages, 11 figure

The chemical interactome space between the human host and the genetically defined gut metabotypes

The bacteria that colonize the gastrointestinal tracts of mammals represent a highly selected microbiome that has a profound influence on human physiology by shaping the host's metabolic and immune system activity. Despite the recent advances on the biological principles that underlie microbial symbiosis in the gut of mammals, mechanistic understanding of the contributions of the gut microbiome and how variations in the metabotypes are linked to the host health are obscure. Here, we mapped the entire metabolic potential of the gut microbiome based solely on metagenomics sequencing data derived from fecal samples of 124 Europeans (healthy, obese and with inflammatory bowel disease). Interestingly, three distinct clusters of individuals with high, medium and low metabolic potential were observed. By illustrating these results in the context of bacterial population, we concluded that the abundance of the Prevotella genera is a key factor indicating a low metabolic potential. These metagenome-based metabolic signatures were used to study the interaction networks between bacteria-specific metabolites and human proteins. We found that thirty-three such metabolites interact with disease-relevant protein complexes several of which are highly expressed in cells and tissues involved in the signaling and shaping of the adaptive immune system and associated with squamous cell carcinoma and bladder cancer. From this set of metabolites, eighteen are present in DrugBank providing evidence that we carry a natural pharmacy in our guts. Furthermore, we established connections between the systemic effects of non-antibiotic drugs and the gut microbiome of relevance to drug side effects and health-care solutions.link_to_subscribed_fulltex

An ecological future for weed science to sustain crop production and the environment. A review

Sustainable strategies for managing weeds are critical to meeting agriculture's potential to feed the world's population while conserving the ecosystems and biodiversity on which we depend. The dominant paradigm of weed management in developed countries is currently founded on the two principal tools of herbicides and tillage to remove weeds. However, evidence of negative environmental impacts from both tools is growing, and herbicide resistance is increasingly prevalent. These challenges emerge from a lack of attention to how weeds interact with and are regulated by the agroecosystem as a whole. Novel technological tools proposed for weed control, such as new herbicides, gene editing, and seed destructors, do not address these systemic challenges and thus are unlikely to provide truly sustainable solutions. Combining multiple tools and techniques in an Integrated Weed Management strategy is a step forward, but many integrated strategies still remain overly reliant on too few tools. In contrast, advances in weed ecology are revealing a wealth of options to manage weedsat the agroecosystem levelthat, rather than aiming to eradicate weeds, act to regulate populations to limit their negative impacts while conserving diversity. Here, we review the current state of knowledge in weed ecology and identify how this can be translated into practical weed management. The major points are the following: (1) the diversity and type of crops, management actions and limiting resources can be manipulated to limit weed competitiveness while promoting weed diversity; (2) in contrast to technological tools, ecological approaches to weed management tend to be synergistic with other agroecosystem functions; and (3) there are many existing practices compatible with this approach that could be integrated into current systems, alongside new options to explore. Overall, this review demonstrates that integrating systems-level ecological thinking into agronomic decision-making offers the best route to achieving sustainable weed management