The Source of Three-minute Magneto-acoustic Oscillations in Coronal Fans

We use images of high spatial, spectral and temporal resolution, obtained using both ground- and space-based instrumentation, to investigate the coupling between wave phenomena observed at numerous heights in the solar atmosphere. Intensity oscillations of 3 minutes are observed to encompass photospheric umbral dot structures, with power at least three orders-of-magnitude higher than the surrounding umbra. Simultaneous chromospheric velocity and intensity time series reveal an 87 \pm 8 degree out-of-phase behavior, implying the presence of standing modes created as a result of partial wave reflection at the transition region boundary. An average blue-shifted Doppler velocity of ~1.5 km/s, in addition to a time lag between photospheric and chromospheric oscillatory phenomena, confirms the presence of upwardly-propagating slow-mode waves in the lower solar atmosphere. Propagating oscillations in EUV intensity are detected in simultaneous coronal fan structures, with a periodicity of 172 \pm 17 s and a propagation velocity of 45 \pm 7 km/s. Numerical simulations reveal that the damping of the magneto-acoustic wave trains is dominated by thermal conduction. The coronal fans are seen to anchor into the photosphere in locations where large-amplitude umbral dot oscillations manifest. Derived kinetic temperature and emission measure time-series display prominent out-of-phase characteristics, and when combined with the previously established sub-sonic wave speeds, we conclude that the observed EUV waves are the coronal counterparts of the upwardly-propagating magneto-acoustic slow-modes detected in the lower solar atmosphere. Thus, for the first time, we reveal how the propagation of 3 minute magneto-acoustic waves in solar coronal structures is a direct result of amplitude enhancements occurring in photospheric umbral dots.Comment: Accepted into ApJ (13 pages and 10 figures

High-resolution spectro-polarimetry of a flaring sunspot penumbra

We present simultaneous photospheric and chromospheric observations of the trailing sunspot in NOAA 10904 during a weak flare eruption (GOES magnitude B7.8), obtained with the Swedish Solar Telescope (SST) in La Palma, Canary Islands. High-resolution \ion{Ca}{ii} $H$ images show a typical two-ribbon structure that has been hitherto only known for larger flares, and the flare appears in a confined region that is discernible by a bright border. The underlying photosphere shows a disturbed penumbral structure with intersecting branches of penumbral filaments. High-resolution Doppler- and vector-magnetograms exhibit oppositely directed Evershed flows and magnetic field vectors in the individual penumbral branches, resulting in several regions of magnetic azimuth discontinuity and several islands where the vertical magnetic field is reversed. The discontinuity regions are co-spatial with the locations of the onset of the flare ribbons. From the results, we conclude that the confined flare region is detached from the global magnetic field structure by a separatrix marked by the bright border visible in \ion{Ca}{ii} $H$. We further conclude that the islands of reversed vertical field appear because of flux emergence and that the strong magnetic shear appearing in the regions of magnetic azimuth discontinuity triggers the flare.Comment: 20 pages + 1 online Figure for A&

GREEN SUKUK RITEL TERHADAP PEMBANGUNAN BERKELANJUTAN DI INDONESIA

Obligasi hijau mulai menyasar investor perorangan dari penerbitan green sukuk ritel. Hal ini dilatarbelakangi oleh meningkatnya pangsa investor pada produk investasi berkelanjutan dalam tujuh tahun terakhir yang berasal dari agen aset yang kurang dikelola. Metode penelitian yang diterapkan pada penelitian ini merupakan kuliatatif dengan pendekatan literatur review. Metode penelitian kualitatif mengkaji dari literatur review dari perkembangan transaksi green sukuk dari tahun 2018 sampai 2022. Hasil penelitian ini menunjukan bahwa secara khusus obligasi hijau mampu memintaskan sumber daya dari pasar modal dalam negeri dan luar negeri untuk mengatur perubahan iklim, energi bersih dan terjangkau serta ekosistem lautan dan daratan. Obligasi Hijau diterbitkan mulai menyasar investor individu dari penerbitan Obligasi Hijau ritel. Hal ini dilatarbelakangi dari pangsa investor yang meningkat di produk investasi berkelanjutan Pada kurun waktu 7 tahun terakhir dari agen aset under manajemen. Di tahun 2012 hanya 11% dari investasi berkelanjutan di dunia dikendalikan oleh investor ritel. Proporsi itu lalu meningkat jadi 25% di tahun 2018. Negara yang sudah mengeluarkan Obligasi Hijau ritel diantaranya adalah Jepang, Canada, New Zealand, Amerika Serikat serta Afrika Selatan. Sedangkan di Indonesia melalui Kementerian Keuangan juga menerbitkan 3 seri instrumen Obligasi Hijau dengan kerangka Green sukuk. Green sukuk merupakan instrumen Obligasi Hijau yang dikeluarkan sejalan dengan prinsip syariah Islam. Green sukuk pertama adalah sukuk Global yang terbit tahun 2018 senilai USD1,25 miliar.Obligasi hijau mulai menyasar investor perorangan dari penerbitan green sukuk ritel. Hal ini dilatarbelakangi oleh meningkatnya pangsa investor pada produk investasi berkelanjutan dalam tujuh tahun terakhir yang berasal dari agen aset yang kurang dikelola. Metode penelitian yang diterapkan pada penelitian ini merupakan kuliatatif dengan pendekatan literatur review. Metode penelitian kualitatif mengkaji dari literatur review dari perkembangan transaksi green sukuk dari tahun 2018 sampai 2022. Hasil penelitian ini menunjukan bahwa secara khusus obligasi hijau mampu memintaskan sumber daya dari pasar modal dalam negeri dan luar negeri untuk mengatur perubahan iklim, energi bersih dan terjangkau serta ekosistem lautan dan daratan. Obligasi Hijau diterbitkan mulai menyasar investor individu dari penerbitan Obligasi Hijau ritel. Hal ini dilatarbelakangi dari pangsa investor yang meningkat di produk investasi berkelanjutan Pada kurun waktu 7 tahun terakhir dari agen aset under manajemen. Di tahun 2012 hanya 11% dari investasi berkelanjutan di dunia dikendalikan oleh investor ritel. Proporsi itu lalu meningkat jadi 25% di tahun 2018. Negara yang sudah mengeluarkan Obligasi Hijau ritel diantaranya adalah Jepang, Canada, New Zealand, Amerika Serikat serta Afrika Selatan. Sedangkan di Indonesia melalui Kementerian Keuangan juga menerbitkan 3 seri instrumen Obligasi Hijau dengan kerangka Green sukuk. Green sukuk merupakan instrumen Obligasi Hijau yang dikeluarkan sejalan dengan prinsip syariah Islam. Green sukuk pertama adalah sukuk Global yang terbit tahun 2018 senilai USD1,25 miliar

Investor Behavior In Green Investment Information

AbstractPurpose - This study aims to analyze the behavior of investors towards voluntary disclosure in the form of green investment information.Method - This research is using qualitative descriptive method, the data will be taken and collected from several literatures and literature studies.Result - The result of this research indicates that there are investors’ behaviors in voluntary disclosure of green investment information.The first, green investor refers to the investors rejecting to the stocks that do not receive green investment, investor will react positively if a disclosure of green investment information stands.The second, the investors react negatively by giving pessimistic respond towards green investment, investors who do not have choice of shares from other companies.Implication - This study uses the data from study of literature.Originality - This research develops several old and new theories related to green investment and it is applied using certain different types of companies as the objects

Investor Behavior In Green Investment Information

AbstractPurpose - This study aims to analyze the behavior of investors towards voluntary disclosure in the form of green investment information.Method - This research is using qualitative descriptive method, the data will be taken and collected from several literatures and literature studies.Result - The result of this research indicates that there are investors’ behaviors in voluntary disclosure of green investment information.The first, green investor refers to the investors rejecting to the stocks that do not receive green investment, investor will react positively if a disclosure of green investment information stands.The second, the investors react negatively by giving pessimistic respond towards green investment, investors who do not have choice of shares from other companies.Implication - This study uses the data from study of literature.Originality - This research develops several old and new theories related to green investment and it is applied using certain different types of companies as the objects

Awareness, detection and management of new and emerging tree pests and pathogens in Europe: stakeholders' perspectives

Emerging and invasive tree pests and pathogens in Europe are increasing in number and range, having impacts on biodiversity, forest services, ecosystems and human well-being. Stakeholders involved in tree and forest management contribute to the detection and management of new and emerging tree pests and pathogens (PnPs). We surveyed different groups of stakeholders in European countries. The stakeholders were mainly researchers, tree health surveyors and forest managers, as well as forest owners, nurseries, policy-makers, advisors, forestry authorities, NGOs and civil society. We investigated which tools they used to detect and manage PnPs, surveyed their current PnP awareness and knowledge and collated the new and emerging PnP species of concern to them. The 237 respondents were based in 15 European coun-tries, with the majority from the United Kingdom, France and the Czech Republic. There was a strong participation of respondents with a work focus on research and surveying, whereas timber traders and plant importers were less represented. Respondents were surveyed on 18 new, emerging PnPs in Europe and listed an additional 37 pest species and 21 pathogen species as potential future threats. We found that species on EPPO's list of 'priority pests' were better known than those not listed.Stakeholders working in urban environments were more aware of PnPs compared to those working in rural areas. Stakeholders' awareness of PnPs was not related to the number of new, emerging PnP species present in a country. Stakeholders want access to more detection and management tools, including long-term citizen -sci-ence monitoring, maps showing spread and range of new PnPs, pest identification smartphone apps, hand-held detection devices, drone monitoring and eDNA metabarcoding. To help facilitate better forest health across Europe, they called for mixed forest development, reduced nursery stock movement, biosecurity and data sharing amongst organisations. These results indicate that stakeholder knowledge of a few key PnP may be good, but given that the large diversity of threats is so large and future risks unknown, we conclude that multiple and varied methods for generic detection, mitigation and management methods, many in devel-opment, are needed in the hands of stakeholders surveying and managing trees and woodlands in Europe

The impact of the prevailing organizational culture on the adoption of green marketing in chemical-industry companies in three Arab states in west Asia

The objective of this study was to investigate the impact of the prevailing organizational culture on the adoption of green marketing in chemical-industry companies in three countries: Syria, Kuwait and Jordan. The research used a survey methodology. A questionnaire was designed and administered simultaneously in the three countries using three different samples consisting of 220 respondents, 12 respondents, and 132 respondents, respectively. The questionnaires collected from the three samples were coded and analyzed. The study concluded that the organizational culture in the samples from the three countries has positive attitudes towards the adoption of green marketing. The Kuwaiti sample has the highest level of positive attitudes in comparison with the other two samples. The task-oriented culture is the dominant prevailing organizational culture in the chemical-industry companies located in Syria and Jordan, but a fulfillment-oriented culture is the dominant prevailing organizational culture in chemical-industry companies located in Kuwait. Our analysis shows that the impact of the prevailing organizational culture differs in accordance with differences in employee education level, country, and years of experience.Organizational culture; Chemical industrial companies; Green marketing; Culture

How Do Product Positioning and Consumer Knowledge of Green Brands Lead To Purchase Decisions?

Green branding has become a relevant strategy for winning the business competition. However, limited research has been conducted specifically investigating the role of green branding positioning on consumer green brand attitude and brand purchase. This study looks into the impact of green brand positioning on green purchasing decisions, considering consumer knowledge and consumer green brand attitude. Specifically, we examined how green brand positioning and knowledge form the green brand attitude and how green brand attitude determines green purchase decisions. Our research setting is green lamp purchase decisions. Respondents were green lamp purchasers and users, with a total sample size were 220 respondents. We developed several hypotheses and tested them using Structural Equation Modelling (SEM) with the AMOS 22. Our research findings showed that green brand positioning and knowledge positively and significantly impact consumers' green brand attitudes. Green brand attitude positively impacts green purchase decisions, and green brand positioning and knowledge positively and significantly affect a green purchase decision. In conclusion, our investigation showed that green brand positioning and green brand knowledge are essential for the formation of green brand attitudes and green brand purchase decisions. We also found the partial mediation of green brand attitude on the effect of green brand positioning on green brand purchase decisions. While for the impact of green brand knowledge on the green brand purchase decision, we did not find the mediating effects of green brand attitude. Keywords: green brand positioning, green brand knowledge, green brand attitude, green brand purchase decisio