bluuebunny/crossref_metadata_2025 huggingface dataset:
Mutual fund recommendations on fund flows and returns
Authors:   , Karnasoot Rachapoom
Published: June 2023

Using Thailand open-end mutual fund samples from 2017 to 2019, this study examines the impact of analysts’ recommendations on mutual fund flow and return. We decide to use the analysts’ recommendation from two big management companies in Thailand who publicly released their analysts’ recommendation in weekly periods, SCBAM and KAsset. We hypothesize and find the recommendations have a significantly positive impact on mutual fund flows and found no significant impact on return. Our study further examines the risk-adjusted return and observe no significant excess return is generated from recommended mutual funds.
Option returns around earning announcement in London
Authors:   , Thangchadakorn Thanawat
Published: June 2023

While prior studies find that returns on straddles constructing before earning announcements are positive in U.S. equity option market, we further investigate and find that returns on straddle constructing before earning announcement are positive in London Stock Exchange either. The logic behind this positive return while return on straddles are generally negative is option traders underestimate volatility of upcoming earning announcement period due to recency bias.
Premium, ownership and operating performance in RTO
Authors:   , Rungpiboonsopit Chawalit
Published: June 2023

A reverse takeover is an alternative method of listing instead of IPO. Compared to IPO, firms using RTO can avoid the stringent requirement of IPO and disclose less information. Hence, these transactions were viewed as suspicious transactions. The U.S-SEC also issued the warning that investors should be careful when considering investing in the RTO firm. However, it is unlikely that investors in the market can separate between the good RTO firm and the bad RTO firm because of the loose requirement of RTO which led to the arising of asymmetric information between investors and RTO firm. As a result, in this study, we aim to raise the research question about “Can we separate between good performance RTO firm and bad performance RTO firm?”. We examine 59 reverse takeovers in the U.S. stock market during 2007-2018. We then suggest that the premium that a private firm paid to a public firm and ownership that a private firm obtained from a public firm after a merger might be a signal to separate between good performance RTO and bad performance RTO. By examining the relationship between these two variables and change in operating performance, we cannot find evidence that these two variables can play a role to imply post-RTO operating performance.
Single currency and the liquidity in corporate assets market
Authors:   , Pavavimol Kamolwan
Published: June 2023

The single currency was adopted in 1999. It gave a huge impact on financial system. In this study, we focus on the single currency impacted to the liquidity in the corporate assets market, market whereby the mergers and acquisitions occurred. The studies found that the single currency had positive effect to the liquidity index in the corporate asset market measured by the intensity of the market transactions in each industry. This increasing in the liquidity mainly from the cross-border deals from the countries that stayed outside the eurozone. Moreover, we found that single currency had positive effect to acquirers to initiate more deals. The acquirer-initiated positive effects stayed with the mergers and acquisitions that happened in eurozone, no empirical evidence was found on the mergers and acquisitions that acquirer was from outside euro area.
The magnet effect of price limits: evidence from high-frequency data on the stock exchange of Thailand
Authors:   , Boonyasitphawee Wongwarit
Published: June 2023

Commonly, daily prices limits are widely used for stabilizing stock markets and decrease volatility during overreaction period. However, regulators may not notice that instead of stopping panic sell or overbought, the daily price limits generate a magnet effect, which cause the price to accelerate to the price limits and increase the overall volatility. This research investigates the magnet effect of price limits using high frequency from the Stock Exchange of Thailand. Using AR(2)-GARCH(2,2) as a base model for each stock’s 5-mins returns to capture the effect. The empirical results present evidence of the strong ceiling magnet effect at all conditions, while only some stock’s characteristics find the evidence on the floor magnet effect. When combined volatility changes with the magnet effect, there is evidence to conclude an increase in volatility during price close to the price limits and after stock’s price hit the price limit.
The relationship between fees and performance of domestic equity funds in Thailand
Authors:   , Suphapitakpaiboon Thapanee
Published: June 2023

This study inclusively examines the relationship between fund fees and performance of open-end domestic equity funds in Thailand from 2010 to 2019 to analyze the domestic-equity fund market in 2 main dimensions: the market competitive and conflict-of-interest between the duties of asset management companies (AMCs) to their parent bank and to unitholders through fund fee channel. The study investigates the relationship of (1) fund fees, (2) fund fees set by bank subsidiaries, and (3) fund fees set by large-bank subsidiaries with its performance in term of both returns over benchmark and Jensen’s alpha. 

Based on the results, investors paid higher fees to AMCs without compensating the fees with superior performance from investment in Thai domestic-equity funds on average. These also implies the domestic equity funds market is not able to be concluded that the market is highly competitive. For funds managed by bank subsidiaries, the result reports that there is statistically significant in the additional negative impact from the fees set by bank-subsidiaries on the fund performance. Thus, the fees set by bank-subsidiaries do matter as it could higher deteriorate the fund performance. One of underlying concept to explain this is because of bank conglomerate structure in mutual fund market, there is possible that AMCs may involve in the activities such as increase in fund fees collected from unitholders that was beneficial to parent bank in term of increase in its revenue rather than maximizing the interests or fund returns to unitholders. Moreover, to inclusively study in conflict-of-interest issue through fund fee channel, the result significantly shows that investors would significantly pay higher fees especially to non-large bank subsidiaries and not receive superior performance.
Determining the tracking error and value-at-risk of an active portfolio when combined with a passive portfolio with value-at-risk constraint
Authors:   , Ladee Nuttawoot
Published: June 2023

When an asset manager manages a portfolio, he usually imposes a TE or a VaR limit on his portfolio to control portfolio risks. However, a portfolio may be divided into different portions. In our research, we consider a portfolio that consists of an active portion and a passive portion. Having a VaR budget of an entire portfolio, we propose methods to determine TE and VaR limit on the active portfolio and illustrate them by using real data. In the empirical part, some problems can occur when we relax certain theoretical assumptions such as (1) stocks in an investment universe can be different from stocks in a benchmark (2) there is a restriction on short-selling. Moreover, risk measures derived from the analysis part are "ex-ante," but calculation methods for monitoring are "ex-post." Therefore, we need to consider these limitations when using the proposed limit on TE and VaR of an active portfolio in real life.
Double bottom pattern recognition for trading strategy
Authors:   , Nuntanart Chusana
Published: June 2023

We utilize the Double bottom pattern, which is a common and the most easily recognized reversal pattern in the technical analysis approach, to seek the existence of abnormal returns from 1 Jan 2009 to 31 Dec 2019. The general event study methodology was used to statistically test for the existence of abnormal returns from 611 stocks in SET.  We concluded that there was an existence of abnormal return from trading with the Double bottom pattern strategy. This led to the conclusion that the Thai stock market might be not as informationally efficient as academics have conjectured.
Marketing and strategy analysis: a case study of Pana coffee company
Authors:   , Intarawichien Sulida
Published: June 2023

Coffee business is extremely growth in last few years. Pana coffee company is a brand-new coffee business company. The company has been established for 4 years. There are lots of organization management that company needed to solid and make the strength on to go further in several years. One of the important managements in organization is marketing management which effect on brand and positioning of brand in market. So, the marketing strategies of company needed the improvement to compete and survive in the global growth business. This study aims to analyze organization resources by using SWOT analysis and 5P’s Marketing mix and suggest how to improve the organization in case of brand acknowledgement or brand profit gaining. To examine the organization marketing strategy, two well-known marketing model which are SWOT analysis and 5P’s Marketing Mix is used. By using SWOT analysis, it shows the strength and weakness to be internal factors of the company. Threats and Opportunities are considered external factor of the company. With 5P’s Marketing Mix to estimate parts of company and find the implement to develop marketing strategies with product, price, place, promotion, and people of company. The results showed every information needed to determine marketing strategies and how to achieve it for the company, for example, the best strength of business would be organic certified, etc. In conclusion, the concept of marketing model should be analyzed in any organizations. To improving marketing strategies, social network marketing is the important key to be considered and implement in this current world business.
كيف كانت اتجاهات طلبة كلية التربية بجامعة صنعاء نحو تعليم المرأة في المجتمع اليمني في مطلع التسعينات
Authors: الفقيه أ.د وهيبة غالب فارع
Published: June 2023

للمرأة اليمنية مكانة تاريخية واجتماعية بالغة الأهمية بحكم الخصوصية التاريخية لليمن وبحكم الطبيعة الاقتصادية الزراعية، ولكن الظروف السياسية التي مر بها المجتمع اليمني منذ مطلع القرن العشرين ساهمت في بقاء أجيال كاملة من الأميين والأميات لا يزال تأثيرها قائما على مكانة المرأة وأدوارها الاجتماعية الحديثة.

وإذا كان من الصعب الحديث عن ذلك الماضي فانه ليس من السهل أيضاً وصف تدافع المواطنين نحو التعليم وتباريهم في تحويل أجزاء من منازلهم الخاصة إلي مدارس وقاعات درس عامة عندما أصبح التعليم حقا دستوريا للجميع بعد ثورة 1962 وقد أسهمت المرأة ماديا وللجميع في بناء المدارس في قرى ومدن البلاد عندما أتيحت لها فرصة المشاركة لتي لم تفرق بين رجل وامرأة .

ويفضل تلك الجهود استطاع المجتمع تجاوز المسافات المظلمة من حياته والاتجاه نحو التغيير خلال حقبة زمنية قصيرة قياسا بما كان قائما ولم تكن المدرسة سوى إحدى الوسائل التي مكنته من ذلك والتي كان للمرأة كما يبدو دور هام في إيجادهامما زاد من رصيد عطائها لمجتمعها الذي لم يكن يملك الإمكانيات المادية الكافية للتصور، لكنه كان يملك الإرادة لفعل حدث عظيم وهو التحول نحو المعرفة فأصبح التحاق الإناث بالمدارس ضرورة وواجبا وطنيا اقتضتها ظروف المرحلة الجديدة المعبرة عن رغبة قوية في التغيير [1] ومع كل ما حصلت عليه المرأة من حقوق دستورية يدور التساؤل في الوقت الحاضر حول استمرار المرأة في تأدية مثل هذا الدور أولا والفائدة التي جنتها هي وبناتها من نشر التعليم ثانيا بعد وصوله إلي مختلف المناطق وفي ظل ظروف اجتماعية.
قراءة في الفكر السياسي لابن خلدون
Authors: الاصبحي د. احمد
Published: June 2023

ابن خلدون علم يدوي اسمه في جنبات التاريخ الوسيط والحديث، كتب عنه، وعن أعماله وتراثه الفكري الكثير، وحظيت مقدمته بشهرة واسعة، فقد تداولتها الأقلام بالبحث والدراسة والتحليل، وعاد إليها أرباب الفكر السياسي والعلوم الاجتماعية والبحثة. تعامل معها أهل السياسة وأهل الاجتماع وأهل الاقتصاد وأهل الفلسفة وأهل الكلام. وأهل التاريخ، وأهل التربية الخلقية والنفسية، وأهل العلوم الطبيعية، وعلوم الكيمياء والفلك، وعكف على قراءتها طلاب العلم.. وتشعب الجميع في فهمها، ووجد كل من هؤلاء وأولئك فيها لقيته، ونال كل مدع وصلا بها شيئاً من مبتغاة.

 

وهذه قراءة مقتضبة في فكر ابن خلدون السياسي، لم تستوف فكره، ويشفع لقصورها أنها لم تكن بحثاً مستقلاً به ومن ثم لم يطل بها الاسترواح في أفياء مقدمته الرائدة، التي طالما سكنت إليها القلوب والعقول وتزاحمت عندها ..الأقلام... ويا لها من دوحة عظيمة، ممتدة الفروع والأفنان ندية الظلال كثيرة الأفياء. خضرة نضرة، تورق بالحكمة، وتفرح بأريج الفكر، وعبير المعرفة ... كيف لا ؟ وقد تعهدها صاحبها العبقري الفذ ابن خلدون بنور الرسالة الخالدة وأغناها بتجاربه العلمية، وسقاها من ينابيع التاريخ، وأفكار العلماء والفلاسفة والحكماء، وأهل الفقه والحديث والرأي المتقدمين منهم والمعاصرين له... فجاءت - على حد قوله- مذهباً عجبياً، وطريقة مبتدعة، وأسلوباً نبه بها عين القريحة من سنة الغفلة، والنوم مع كل ما تقدم من إشارات الى موسوعته الفكرية والاجتماعية والسياسية والاقتصادية والعلمية، ومع ما قاله من مطموسة هذه الموسومة بأنه "مستحث الصناعة، غريب الازمة، غزير الساقية اعثر عليه البحث، وأدى إليه الفرص" فإنه لم يدع الكمال لا ما قدم القد قال ورتوا تعلمه فلنناظر  المحقق إصلاحه، ولي الفضل، لأني اتهمت له السبيل، وأوضحت له الطريق ".
مدى تقيد الشـركات المسـاهمة الجـزائـرية بمبـادئ الحـوكمة
Authors: جمعة د.هوام , أميـنة أ.فـداوي
Published: June 2023

هدفت هذه الدراسة إلى التعرف على واقع الحوكمة و مدى التزام  الشركات المساهمة الجزائرية بمبادئ الحوكمة المنصوص عليها من طرف منظمة التعاون الاقتصادي والتنمية  OECD ،التأكيد على أهمية مبادئ حوكمة الشركات في دعم الأداء الاقتصادي الجزائري، على اعتبار أنها  تعد  بمثابة نقطة مرجعية بالإمكان استخدامها من قبل صانعي السياسة في غمار إعدادهم للأطر القانونية والتنظيمية لأساليب حوكمة الشركات،

  ولتحقيق هدف هذه الدراسة قمنا بتصميم استبيان موجه الى كل من المهنيين ،أعضاء مجالس الإدارة ، محافظي الحسابات، المساهمين و المستثمرين ، أعوان البنوك ، إدارة الضرائب و العمال ،  وقد تم اختيار عينة الدراسة لمختلف الفئات بطريقة عشوائية بحيث بلغ حجمها (80) ، و تم توزيع الاستبانات على جميع أفراد العينة عن طريق المقابلة المباشرة  لأفراد العينة ، و بعد عملية الفرز و التبويب تقرر الإبقاء على (50) استبانه من المجموع الكلي،  لتمثل عينة الدراسة و ذلك بعد إقصاء باقي الاستبانات و المقدرة ب (30)، بعضها استبعدت للنقص أو لتضارب الإجابات. لقد تم استخدام أسلوب التحليل الاحصائي الوصفي و الإستدلالي، لوصف وتحليل بيانات الدراسة، وإختبار فرضياتها

  خلصت نتائج تحليل الدراسة إلى أن الشركات المساهمة في الجزائر لازالت تعاني من عجز كبير في تطبيق مبادئ الحوكمة ، و أن هذا راجع بالدرجة الأولى إلى تأخر الجزائر في تبني هذا المفهوم إضافة إلى قله وعى المهنيين و استيعابهم لمبادئ حوكمة الشركات و ضرورة احترامها.
PARTISIPASI MASYARAKAT DALAM PEMBENTUKAN PERATURAN DAERAH PROVINSI (STUDI PEMBENTUKAN PERATURAN DAERAH PROVINSI NUSA TENGGARA TIMUR NOMOR 7 TAHUN 2020 TENTANG RETRIBUSI JASA USAHA PERIKANAN)
Authors: Realino Ahas Petrus , Mario Monteiro Josef , Ratu Udju Hernimus
Published: June 2023

Penulisan ini bertujuan untuk mengetahui : (1) partisipasi masyarakat dalam pembentukan Peraturan Daerah Provinsi Nusa Tenggara Timur Nomor 7 Tahun 2020 tentang Retribusi Jasa Usaha Perikanan dan (2) faktor penghambat partisipasi masyarakat dalam pembentukan Peraturan Daerah Provinsi Nusa Tenggara Timur Nomor 7 Tahun 2020 tentang Retribusi Jasa Usaha Perikanan. Adapun metode penulisan skripsi ini adalah penelitian empiris yang bersumber pada data primer dan data sekunder yang diperoleh dari bahan hukum primer; bahan hukum sekunder; dan bahan hukum tersier. Metode pendekatan yang dipakai adalah pendekatan sosio-legal; pendekatan konseptual; dan pendekatan peraturan perundang-undangan. Hasil penelitian menunjukan bahwa Paritisipasi masyarakat dalam pembentukan Peraturan Daerah Provinsi Nusa  Tenggara Timur Nomor 7 Tahun 2020 tentang Retribusi Jasa Usaha Perikanan dilaksanakan dalam 3 (tiga) bentuk kegiatan, yakni : 1) Pelibatan Tim Pakar Dalam Penyusunan Naskah Akademik dan Rancangan Peraturan Daerah Provinsi Nusa Tenggara Timur tentang Retribusi Jasa Usaha Perikanan; 2) Public Hearing Rancangan Peraturan Daerah Provinsi Nusa Tenggara Timur tentang Retribusi Jasa Usaha Perikanan; dan 3) Sosialiasi Peraturan Daerah Provinsi Nusa Tenggara Timur Nomor 7 Tahun 2020 tentang Retribusi Jasa Usaha Perikanan. Faktor penghambat partisipasi masyarakat dalam pembentukan Peraturan Daerah  Provinsi Nusa Tenggara Timur Nomor 7 Tahun 2020 tentang Retribusi Jasa Usaha Perikanan meliputi : 1) Masyarakat; 2) Koordinasi; 3) Tidak Ada Rapat Dengar Pendapat DPRD Provinsi Dengan Asosiasi Masyarakat Nelayan.
„This is how we love you in France! Now do what you want with our love!” or about the visits of some writers to Chișinău
Authors: Grati Aliona , Filip Iulian
Published: June 2023

The theme of the dialogue is the visits of foreign writers to Chișinău and the literary collaborations with them during the last two decades of the Soviet regime and in the first two after the emergence of the new state Republic of Moldova. The facts are reconstructed by the poet, prose writer, playwright, folklorist Iulian Filip, who was actively involved in them, starting in the 70s. Thus, the meetings in Chișinău with the Armenian poet Ghevorg Emin, the Japanese translator Sumiya Haruia, the Romanian writers Ioan Alexandru, Mircea Tomuş, the Italian journalist, editor and translator Amedeo Carrocci etc. are reconstructed. As a result of these meetings, collaborations were established and especially writers from Chișinău literature were translated. Living memory corrects the official records, irremediably converted to the themes required by Soviet culture, which the foreign writers who arrived in Chișinău had to honor. At the same time, Iulia Filip reconstructs some sequences from the literary life of the first years of the independence of the republic between the Prut and Dniester.
Lviv traditions of honoring Mykola Lysenko: Muses are not silent
Authors: Syvokhip Volodymyr
Published: June 2023

Mykola Lysenko (1842–1912) is a leading figure of Ukrainian music, one of the most outstanding personalities. The work shows the history and features of his creative activity in Lviv. The basis for the foundation of classical music in Ukraine have been studied through his cultural-artistic development. Pedagogical, musicological, and conductor contributions of the composer have been discovered in the article. Lysenko’s constant connection with Lviv and Halychyna region is noted, where his artwork was extremely popular, and his personality was always honored through the holding of various ceremonial events.
At the beginning of Chișinău city
Authors: Chirtoaga Ion
Published: June 2023

In this article, we elucidate some aspects related to the constitution of the city of Chișinău, presenting data from archaeological, toponymic and anthroponymic studies. During the period of the Golden Horde, the Mongol-Tatars left certain traces in various localities of the Republic of Moldova, including Chișinău. They arrived in the Tighina plain as nomadic cattle breeders, sheltering in Turanian yurts and gradually becoming seminomadic. Their evacuation in the 60s of the 14th century, from the south-east of the Carpathian region, preceded the establishment of Chișinău as a rural town near a former Tatar castle. The period in which the Nogai Emir came to the west of the lower course of the Dnieper and expanded the area of Golden Horde domination up to the vicinity of the Eastern Carpathians, was a premise for the expansion of the system of communication networks, established by Ginghiz Khan, and in the central part of present-day Moldova; on the Iași–Tighina route there was also the post office on the site of the future city of Chișinău. In the middle of the 17th century, Chişinău was transformed from a rural to an urban locality, retaining various notions from the period of Mongol-Tatar domination, as well as the toponyms Chişinău (cismea, spring, fountain), Buiuk (the name of a large spring, from which comes from the name of the respective village), Bahína (garden), Poșta Veche, Săbăna (from saban, light plough, ploughman), etc.
New paper: Wedel and Atterholt (2023) on expanded neurocentral joints in sauropods
Authors: Wedel Matt
Published: June 2023

Sauropod vertebrae in anterior view exhibiting a spectrum of variation in the dorsoventral positions of the neurocentral joint. Wedel and Atterholt (2023: fig. 1). As described in the last post, Jessie Atterholt is presenting our poster on this project today, at the 14th Symposium on Mesozoic Terrestrial Ecosystems and Biota (MTE14) in Salt Lake City, and the related paper is in the MTE14 volume in The Anatomical Record.
La vulneración del derecho del imputado en el proceso inmediato hacia una modificatoria del regulado proceso garantista penal
Authors: Gálvez Vásquez Oscar Alexander
Published: June 2023

El presente artículo científico de revisión que lleva por nombre “la vulneración del derecho del imputado en el proceso inmediato hacia una modificación del regulado proceso garantista penal” pretende determinar de qué manera la aplicación del proceso inmediato por el órgano jurisdiccional, garantiza la vigencia de los derechos procesales del procesado; la presente investigación está centrada específicamente en este objetivo general; así como también en nuestros objetivos específicosel deestablecer los fundamentos teóricos del proceso inmediato según la legislación peruana, precisar los cambios que han operado en el proceso inmediato desde la promulgación del Decreto Legislativo N° 956 hasta el Decreto Legislativo N° 1194. Y establecer los derechos procesales que se reconocen como garantías del encausado en el desarrollo del proceso penal. Asimismo nos hemos propuesto y establecido ciertas directrices guiándonos por los métodos inductivo – deductivo, los cuales en un primer momento han ayudado en la formulación de las conclusiones, aplicando el método hermenéutico, con el fin de aplicar y confrontar teoría con la realidad lo que nos ha permitido determinar conclusiones valederas., usando también una metodología de enfoque cualitativo para así poder desarrollar el presente artículo de revisión teniendo también el alcance de investigación jurídica dogmático y descriptivo, debido a que en la presente investigación se busca describir los rasgos de los fenómenos facticos de la afectación del derecho de defensa del imputado con la aplicación expeditiva del proceso inmediato. Siendo la principal conclusión general en que La comunidad jurídica debe comprender que el proceso inmediato es un proceso célere en la que se elimina la etapa preparatoria del proceso ordinario, con la salvedad que su aplicación debe ser para ilícitos de bagatela o menor cuantía y no complejos con la finalidad de evitar que se vulneren derechos fundamentales y que se siga considerando como inconstitucional.
Equidad en la educación superior universitaria pública en América Latina y El Caribe. Una revisión sistemática
Authors: Casas Córdova Carlos Jonás
Published: June 2023

La equidad en la educación superior ha sido tratada desde el acceso en el ingreso hasta el logro de resultados en los estudiantes; sin embargo, la educación superior en un contexto global viene influenciado por una diversidad de factores diferenciados a nivel país. La revisión bibliográfica fue de tipo descriptivo considerando artículos presentados en las revistas web of sciencie, scopus, scielo de 2017 a 2021, por esta razón se ha planteado la investigación en las categorías de acceso, oportunidad, permanencia y resultados. Se destaca que el tema más investigado es el relacionado al acceso y que influye decididamente en la equidad. El otro factor que mereció especial atención es la equidad en la oportunidad, seguido de la equidad en los resultados; la permanencia fue el aspecto menos mencionado en los artículos revisados respecto a la equidad de la ES en LAC. De la revisión realizada se desprende que los factores que más inciden en la equidad de la ES en LAC son la equidad en el acceso, en la oportunidad, en los resultados y en la permanencia.
E-CRM Untuk Mendorong Loyalitas Pelanggan Di Toko Tuah Bunda
Authors: Natasya Dea , Risnawati Risnawati , Yori Apridonal M
Published: June 2023

Toko Tuah Bunda adalah salah satu toko yang bergerak dibidang penjualan pakaian yang menjual beberapa macam jenis produk seperti gamis, oneset, tunik, dress, dan rok. Pada operasionalnya, Toko Tuah Bunda mengalami penurunan jumlah penjualan pakaian sejak 2 tahun belakangan yang sangat berdampak pada pendapatan yang diperoleh. Selain itu, pencatatan penjualan masih dilakukan menggunakan Microsoft Excel, saat transaksi jual beli perhitungan jumlah produk dan harga masih menggunakan media kalkulator sehingga terdapat resiko terjadinya kesalahan dan memakan cukup banyak waktu. Metode yang digunakan pada penelitian ini adalah metode kualitatif. Dengan menerapkan sistem e-CRM yang dibuat menggunakan bahasa pemrograman framework codeigniter dan MySQL sebagai database server maka dapat mendorong loyalitas pelanggan di dan membantu Toko Tuah Bunda mendapatkan pelanggan yang lebih banyak sekaligus mempertahankan pelanggan dengan berbagai fitur dan promo yang tersedia
Tinjauan Pustaka Sistematis : Penerapan Metode Gabor Wavelet Pada Computer Vision
Authors: Mulya M Abdy , Zaenul Arif  , Syefudin
Published: June 2023

Computer Vision merupakan sebuah sistem otomatis yang digunakan untuk melakukan analisa citra dan video oleh komputer untuk memperoleh informasi dan pemahaman dari suatu obyek. Computer Vision merupakan kemampuan dari sebuah mesin atau computer dalam melihat atau mengenali sebuah citra dengan sama atau bahkan dapat melebihi kemampuan pengelihatan manusia asli. Salah satu metode yang digunakan dalam computer vision adalah gabor wavelet. Metode gabor wavelet merupakan salah satu metode yang mampu melakukan proses identifikasi wajah secara real time dan juga mampu melakukan tugas-tugas yang membutuhkan pencarian pada database wajah yang besar.

Penelitian ini dilakukan dengan pendekatan systematic literature Review (SLR), yaitu dengan menggabungkan berbagai sumber dari jurnal penelitian sebelumnya. Tujuan dari penelitian dengan menggunakan pendekatan systematic Literature Review (SLR) ini adalah untuk mengetahui penerapan metode Gabor Wavelet pada Computer Vision.

Hasil dari penelitian ini menunjukkan bahwa penerapan metode Gabor Wavelet pada computer vision banyak digunakan untuk pengenalan wajah (face recognition) dan deteksi wajah (face detection) yang bisa diterapkan di bidang komersial maupun bidang penegakan hukum dengan memberikan hasil yang sangat baik dengan tingkat akurasi 90%.
Rio Carinhanha
Authors: Rodney Evandro
Published: June 2023

A capa deste número contém fotografia do rio Carinhanha de autoria do fotográfo Evandro Rodney e criação e design da Assessoria de Comucação (Ascom). O rio é um dos principais afluentes do rio São Francisco e está localizado no município de Bonito, no Norte de Minas Gerais.
Tendências temporais e espaciais da qualidade das ´´águas superficiais da bacia hidrográfica do rio Piranga, Minas Gerais
Authors: Pereira Alex Cardoso , Rezende Ana Augusta Passos , Braga Gustavo Bastos , Ramos Oda Tatiana Yuri
Published: June 2023

Este estudo apresenta uma análise da tendência temporal e espacial da qualidade das águas superficiais da bacia hidrográfica do rio Piranga, sub-bacia hidrográfica do rio Doce, em Minas Gerais, Brasil.  Foram aplicados testes estatísticos, multivariados e não paramétricos para avaliar 19 parâmetros de qualidade de 7 estações da rede de monitoramento do IGAM/ANA, obtidos no período de 2008 a 2018. Os resultados das análises de correlação de Spearman e de tendência Mann-Kendall sugeriram que 73,68% dos parâmetros apresentam valores com tendências de redução ou aumento, com maiores alterações associadas a cloreto total, condutividade elétrica in loco, ferro, nitrato e pH. A Análise de Cluster definiu três grandes grupos de estações de monitoramento, agrupadas segundo a região dentro da bacia hidrográfica, correspondentes à parte alta, média e baixa. No entanto, ao longo de toda a bacia hidrográfica, foi observado a degradação da qualidade da água durante o período avaliado, principalmente relacionada ao lançamento de esgotos domésticos e escoamento superficial de áreas agrícolas.  O fato de o IQA não apresentar tendência temporal merece atenção dos órgãos governamentais para ações de recuperação da qualidade das águas superficiais nos cursos d’água da região.

Keywords: Water quality. Analysis of hierarchical clusters. Spearman's correlation. Mann-Kendall. Water Quality Index.

 

Abstract

This study presents an analysis of the temporal and spatial trend of surface water quality in the Piranga River watershed, a sub-basin of the Doce River, in Minas Gerais, Brazil. Statistical, multivariate and non-parametric tests were applied to assess 19 quality parameters of 7 stations in the IGAM/ANA monitoring network, obtained from 2008 to 2018. The results of Spearman correlation and Mann-Kendall trend analyzis suggested that 73.68% of the parameters show values with varying trends, with greater changes associated with total chloride, in loco electrical conductivity, iron, nitrate and pH. The analyzis of hierarchical clusters defined three large groups of monitoring stations, grouped according to the region within the hydrographic basin, corresponding to the upper, middle and lower parts. However, throughout the entire hydrographic basin, degradation of water quality was observed during the evaluated period, mainly related to the release of domestic sewage and surface runoff from agricultural areas. Thefact that the WQI –Water quality Index –of 4 of the 7 stations present a temporal trend of stabilization, in values considered as regular, deserves attention from the social actors of the hydrographic basin for actions to recover the quality of surface water in the watercourses of the region, especially in the region from the source and mouth of the Piranga river.
Qualidade de água em veredas da bacia do rio Uberabinha - Uberlândia/MG
Authors: De Camargo Faxina Rudmir Rogerio , Bertolino Sueli Moura , Oliveira Denis Coelho de
Published: June 2023

As veredas são ecossistemas típicos do Cerrado central do Brasil, caracterizados por ocorrer em solos hidromórficos, com afloramento do lençol freático e buritis como símbolo arbóreo. Essa fitofisionomia contribui para a manutenção de rios e são áreas de preservação permanente. O objetivo deste estudo foi avaliar a qualidade da água em cinco veredas na região de Uberlândia/MG, sendo três rurais e duas urbanas. O monitoramento de parâmetros físico-químicos e metais foram realizados por doze meses, abrangendo épocas chuvosa e de seca. Análises por componentes principais mostraram que a conservação da vegetação nas veredas pode contribuir para a qualidade da água. Os atributos químicos revelaram grandes diferenças na qualidade da água entre as áreas alagadas. Sendo que a área com mais interferências antrópicas foi uma das veredas urbanas. Este estudo também mostrou que as áreas com mais intervenções, exercem maior pressão na qualidade de água do que nos ambientes preservados.
Keywords: Anthropic interventions. Physicochemical parameters. Chemometrics.
 
Abstract
The palm swamps (vereda) are ecosystems in Brazilian savanna (Cerrado) characterized by the occurrence  of  hydromorphic  soils,  where  there  are  water  table  outcrops  and  the Mauritiaflexuosais  the  arboreal symbol.  This  phyto  physiognomy  contributes  to  the  maintenance  of rivers and those zones are considered permanent preservation areas. The objective of this study was to evaluate water quality in five palm swamps near the city of Uberlandia/MG, three in rural and two in urban areas. It was carried out the analysis of physical-chemical parameters and metallic elements over twelve months covering rainy and dry seasons. The analysis ofthemost  relevant  components  also  showed  a  decrease  in  water  quality  due  to  land  use  and occupation in the palm swampsand their surrounding areas, as evidenced by differences in the physicochemical  parameters  of  analyzed  wetlands.  The  area  with  the most  anthropic interference was one of the urban located palm swamp. This study also showed that the areas with more interventions exert grater pressure on water quality than in preserved environments.
Análise espacial e temporal de parâmetros de qualidade da água em sub-bacias afluentes ao rio Itapocu (SC)
Authors: Pereira Jean Carlos Viccari , Rodrigues Jonatan Chaves , Hepp Daniela Vellar , Mayer Lidiane , Santos Renan de Freitas , Zeh Kaethlin Katiane , De Oliveira Therezinha Maria Novais , Holler Karine Rosilene
Published: June 2023

O presente estudo foi realizado na bacia hidrográfica do Rio Itapocu, em Santa Catarina – Brasil. O principal objetivo foi analisar espacial e temporalmente parâmetros de qualidade da água, durante o período de 2014 a 2019, nas principais sub-bacias afluentes ao rio Itapocu, mediante a análise de laudos técnicos de monitoramento dos parâmetros coliformes termotolerantes, Escherichia coli, demanda bioquímica de oxigênio (DBO5,20ºC), fósforo total, nitrogênio amoniacal total, nitrato, oxigênio dissolvido, pH, turbidez e cor verdadeira. Os parâmetros foram analisados à luz da Resolução 357/2005 do Conselho Nacional do Meio Ambiente (CONAMA). Os resultados da análise espacial e temporal dos parâmetros de qualidade da água evidenciaram correlação entre os usos do solo preponderantes nos pontos de amostragem juntamente com o regime de chuvas registrados. Além disso, sugestões e estratégias de melhoria para programas de monitoramento futuros na bacia hidrográfica do Rio Itapocu são propostos.
Keywords: Water quality. Monitoring. Watershed.
 
Abstract
The present study was carried out in the Itapocu River watershed, Santa Catarina -Brazil. The main purpose of this article was the spatiotemporal analysis of the water quality parameters, during the period from 2014 to 2019, in the main sub-basins affluent to the Itapocu River, through an analysis of technical monitoring reports. Several parameters as thermotolerant coliforms,Escherichia  coli,biochemical  oxygen  demand  (BOD5),  total  phosphorus,  total ammonia nitrogen, nitrate, dissolved oxygen, pH, turbidity, and true color were evaluated. The results of  the reports were analyzed considering the Resolution  357/2005 of  the National Council for the Environment (CONAMA). Results of the spatiotemporal analysis of the water quality parameters showed a correlation between the predominant land uses in the sampling points  along  with  the  registered  precipitation  regime.  Furthermore,  suggestions,  and improvement strategies for future monitoring programs in the Itapocu river watershed are proposed.
Período de retorno de eventos extremos em Alagoas e suas causas climáticas
Authors: Cavalcante Iara Bezerra da Silva , Da Silva Djane Fonseca
Published: June 2023

O objetivo deste trabalho é calcular o período de retorno de eventos extremos para alguns municípios de Alagoas, bem como a probabilidade de ocorrência e identificar suas causas climáticas através da análise de ondeletas (AO). Os dados são provenientes da Agência Nacional das Águas (ANA), com períodos variados para cada município. Por se tratar de período de retorno, as séries podem e devem ser com período variados, visto que os eventos extremos de cada local, ocorrem em períodos diferentes. Em todos os municípios, a AO identificou as escalas intrassazonais, semestrais, interanuais, o ENOS, o ENOS estendido, o Dipolo do Atlântico, as manchas solares e a ODP, sendo as escalas dominantes da ODP e das manchas solares, que contribuíram para os anos secos e chuvosos.

Keywords: Wavelet Analysis. ENSO. Atlantic Dipole.

 

Abstratc  

The objectives of this work are to calculate the period of return of extreme events in some municipalities of Alagoas, their probability of occurrence and to identify their climatic causes through wavelets analysis (AW). The data come from the National Water and Basic Sanitation Agency (ANA), considering different periods for each municipality. Because it is a return period, the series may and should be varied, once the extreme events in each location occur in different times. In all municipalities, wavelets analysis identified the inter-seasonal, half-yearly, inter-annual scales, el niño southern oscillation (ENSO), extended ENSO, Atlantic Dipole, sunspots and Pacific Decadal Oscillation (PDO), being PDO and sunspots the dominant scales, which contributed to the dry and rainy Years.
Expediente
Authors: Editorial Equipe
Published: June 2023

Expedinte referente ao v.2/2021
Enquadramento dos corpos hídricos das Circunscrições Hidrográficas DO2, SF2, SF3, SF5, GD1, GD2, GD4 e PS1 a partir da Base hidrográfica ottocodificada IGAM – 2021
Authors: Morato Robson Ferreira Bastos , Almeida Melissa Martins de
Published: June 2023

O Instituto Mineiro de Gestão das Águas (Igam) a fim de atualizar e consolidar o avanço na política de gestão das águas em Minas Gerais, institui a nova base hidrográfica ottocodificada IGAM - 2021, como fonte oficial para os produtos e dados espaciais e consumidos pelos sistemas de gestão e órgãos de controle e sociedade civil. A Gerência do Sistema Estadual da Informação em Recursos Hídricos – GEIRH, vem aplicando a atualização das bases de gestão, bem como consolidando e integrando todo Sistema Estadual de Informação sobre Recursos Hídricos (InfoHidro), possibilitando a interoperabilidade entre a gestão interna, órgãos de controle e sociedade civil, a partir de uma mesma base de referência geográfica. A presente nota técnica tem em seu objetivo interpretar e aplicar as definições de enquadramento oriundo das respectivas deliberações normativas publicadas das Circunscrições Hidrográficas DO2, SF2, SF3, SF5, GD1, GD2, GD4 e PS1 dentro da base hidrográfica ottocodificada IGAM - 2021.
Análise comparativa entre vazão medida e vazão regionalizada em três pares de bacias hidrográficas morfometricamente semelhantes do estado de Minas Gerais
Authors: Collares Eduardo Goulart , Araujo Elisangela de , Silva Brenda Cristine Barbosa , Gonçalves Gideão Gabriel , Silva Ana Cláudia Nascimento e
Published: June 2023

A carência de monitoramento fluviométrico nas bacias hidrográficas brasileiras, principalmente nas de pequeno porte, configura-se como um desafio no âmbito da gestão dos recursos hídricos, e tal cenário acarreta no uso de dados regionalizados de vazões, que nem sempre condizem com a realidade local. O propósito deste trabalho foi avaliar o uso de vazões regionalizadas, bem como os limites definidos pelas agências reguladoras de recursos hídricos na análise de processos de outorgas para captação de água superficial. A sistemática metodológica envolveu a determinação das vazões regionalizadas para cada bacia selecionada, de acordo com as metodologias propostas pelos órgãos reguladores, e ainda, a comparação com os valores de vazões medidos nas estações situadas no exutório destas bacias. Os resultados obtidos permitem inferir que os métodos atualmente utilizados para a determinação das vazões regionalizadas e os limites definidos pelas agências reguladoras não foram representativos para as bacias alvo do estudo.
Influência das atividades antrópicas e do rompimento da barragem I, da mina Córrego do Feijão, na qualidade da água da bacia hidrográfica do rio Paraopeba
Authors: Soares Ana Luiza Cunha , Oliveira Silvia Corrêa , Gomes Lenora Nunes Ludolf
Published: June 2023

O objetivo do presente estudo foi avaliar a qualidade das águas superficiais da bacia do rio Paraopeba, a fim de identificar os corpos d'água mais degradados e os possíveis impactos gerados pelo rompimento da Barragem I, da mina Córrego do Feijão, da Mineradora Vale S.A., em Brumadinho e as demais fontes de poluição. Para tanto, foram aplicados testes não paramétricos de Kruskal-Wallis, complementadas pela análise das desconformidades aos limites estabelecidos pela legislação ambiental, aos dados de monitoramento obtidos junto ao Instituto Mineiro de Gestão das Águas (Igam), do período de 2008 a 2021. De acordo com os resultados, dentre os afluentes do rio Paraopeba, os rios Maranhão e Betim foram os que apresentaram maior degradação da qualidade da água, que pode ser associada ao lançamento de esgotos domésticos não tratados ou insuficientemente tratados, além de serem influenciados pelas atividades econômicas e tipos de solos da região. Os resultados dos parâmetros alumínio dissolvido, chumbo total, cor verdadeira, ferro dissolvido, ferro total, manganês total, sólidos em suspensão totais e turbidez evidenciam os impactos causados pelo rompimento da barragem I – Mina do Córrego do Feijão, que alterou a qualidade da água da calha rio Paraopeba a partir da confluência com o ribeirão Ferro Carvão, em Brumadinho.
Regime de recarga subterrânea natural nas bacias dos principais mananciais de abastecimento de Juiz de Fora
Authors: Pires Nicolas da Rocha , Ribeiro Celso Bandeira de Melo
Published: June 2023

Com o desenvolver da sociedade, a necessidade do uso de recursos hídricos aumentou e, portanto, a gestão dos mesmos se tornou imprescindível para evitar escassez de água em uma dada região. Esse trabalho se propõe a avaliar as taxas de Recarga Natural da Água Subterrânea nas em três mananciais do Rio Paraibuna (as sub-bacias da Barragem de Chapéu D’Uvas, do Ribeirão Espírito Santo e do Ribeirão dos Burros, que juntos abastecem cerca de 90% da cidade de Juiz de Fora) utilizando o modelo hidrológico SWAT com o amparo da extensão QSWATMOD, no QGIS, a qual cria o vínculo dos processos de águas superficiais e subterrâneas. Dos resultados, vê-se que a sub-bacia de Ribeirão dos Burros possui a maior taxa de recarga média em milímetros e a sub-bacia da Barragem de Chapéu D’Uvas possui a menor. Verifica-se, também, a variação sazonal da recarga nas três sub-bacias, como esperado para a região de Juiz de Fora, de clima tropical de altitude, apresentando chuvas concentradas nos verões e, portanto, invernos mais secos. A segunda análise relaciona os tipos de solo, e pode-se concluir que latossolos são mais eficientes na condução de águas até uma reserva subterrânea que cambissolos, em torno de 30%. O trabalho apresenta resultados passíveis de discussão com setores públicos sobre a administração e gestão dos recursos hídricos da região e serve de base para a evolução do modelo das sub-bacias estudadas e abre caminho para um modelo com valores mais refinados, tornando o valor obtido ao final mais preciso.
Expediente
Authors: Editorial Equipe
Published: June 2023

Expedinte referente ao v.3/2022.
Little-Known Oropouche Virus Is Spreading: What Clinicians Need to Know About the Insect-Borne Illness
Authors: Schweitzer Kate
Published: January 2025

This Medical News article discusses the emerging Oropouche virus, which recently has been associated with deaths and vertical transmission in the Americas.
Patient-Reported Influence of Sociopolitical Issues on Post-Dobbs Vasectomy Decisions
Authors: Cheng Lucille G. , White Kari , Jarlenski Marian , Hwang Kathleen
Published: January 2025

This cross-sectional study of US patients initiating a vasectomy procedure examines the association of vasectomy decision-making with sociopolitical issues following the US Supreme Court’s repeal of the right to abortion.
The role and significance of state‐building as ensuring national security in the context of artificial intelligence development
Authors: Gumenyuk Vitaliy , Nikitin Anatolii , Bondar Oleksandr , Zhydovtsev Iaroslav , Yermakova Hanna
Published: January 2025

Artificial intelligence (AI) has emerged as a major technology and represents a fundamental and revolutionary innovation of our time that has the potential to significantly change the global scenario. In the context of further development of artificial intelligence, state establishment plays a central role in ensuring national security. Countries are tasked with developing legal frameworks for the development and application of AI. Additionally, governments should commit resources to AI research and development to ensure access to cutting‐edge technology. As AI continues to evolve, nation‐building remains crucial for the protection of national security. Countries must shoulder the responsibility of establishing legal structures to supervise the progression and implementation of artificial intelligence. Investing in AI research and development is essential to secure access to cutting‐edge technology. Gracious society and open engagement apply critical impact on forming AI approaches. Civic organizations can contribute to expanding open mindfulness of the related dangers and openings of AI, guaranteeing straightforwardness and responsibility in legislative activities, and pushing for the creation of capable AI approaches. Open interest can help governments in comprehending the yearnings of citizens with respect to AI approaches. This study explores the role and importance of nation‐building in ensuring national security in the context of the development of artificial intelligence. It also examines how civil society and public participation can effectively shape AI policy. The topic offers diverse research and analytical opportunities that enable a deeper understanding of the interactions and mutual influences between statehood and artificial intelligence in the context of ensuring national security. It examines the potential and threats that artificial intelligence poses to national security and considers strategies that countries can adopt to ensure security in this area. Based on the research findings, recommendations and suggestions are made for governments and civil society to improve the effectiveness of public participation in formulating AI policies.
A survey of security and privacy issues of machine unlearning
Authors: Chen Aobo , Li Yangyi , Zhao Chenxu , Huai Mengdi
Published: January 2025

Machine unlearning is a cutting‐edge technology that embodies the privacy legal principle of the right to be forgotten within the realm of machine learning (ML). It aims to remove specific data or knowledge from trained models without retraining from scratch and has gained significant attention in the field of artificial intelligence in recent years. However, the development of machine unlearning research is associated with inherent vulnerabilities and threats, posing significant challenges for researchers and practitioners. In this article, we provide the first comprehensive survey of security and privacy issues associated with machine unlearning by providing a systematic classification across different levels and criteria. Specifically, we begin by investigating unlearning‐based security attacks, where adversaries exploit vulnerabilities in the unlearning process to compromise the security of machine learning (ML) models. We then conduct a thorough examination of privacy risks associated with the adoption of machine unlearning. Additionally, we explore existing countermeasures and mitigation strategies designed to protect models from malicious unlearning‐based attacks targeting both security and privacy. Further, we provide a detailed comparison between machine unlearning‐based security and privacy attacks and traditional malicious attacks. Finally, we discuss promising future research directions for security and privacy issues posed by machine unlearning, offering insights into potential solutions and advancements in this evolving field.
Reports highlight need to expand initiation of medication for AUD
Authors: Enos Gary
Published: January 2025

Several recently published reports suggest the importance of initiating medication treatment for alcohol use disorder (AUD) at opportune times, even in some cases for individuals for whom it was once thought this approach carried too much risk.
Not going back into the basement quietly!
Authors: Campbell Stephanie
Published: January 2025

As a person in long‐term recovery from substance use disorder, I have abstained from the use of alcohol and drugs for over 24 years. My recovery has positively impacted not only my life, butthe lives of many others and has afforded me the gift of being a mother to two beautiful daughters, being a gainfully employed member of my community, and a taxpayer instead of a tax drain.