bluuebunny/crossref_metadata_2025_split huggingface dataset:
Persistence of SARS-CoV-2 total immunoglobulins in a series of convalescent plasma and blood donors
Authors: Martin M. Carmen , Jimenez Ana , Ortega Nuria , Parrado Alba , Page Isabel , Gonzalez M. Isabel , Blanco-Peris Lydia 
Published: February 2022

Background
The vast majority of COVID-19 cases both symptomatic and asymptomatic develop immunity after COVID-19 contagion. Whether lasting differences exist between infection and vaccination boosted immunity is yet to be known. The aim of this study was to determine how long total anti-SARS-CoV2 antibodies due to past infection persist in peripheral blood and whether sex, age or haematological features can influence their lasting.

Material and methods
A series of 2421 donations either of SARS-CoV-2 convalescent plasma or whole blood from 1107 repeat donors from January 2020 to March 2021 was analysed. An automated chemiluminescence immunoassay for total antibodies recognizing the nucleocapsid protein of SARS-CoV-2 in human serum and plasma was performed. Sex, age, blood group, blood cell counts and percentages and immunoglobulin concentrations were extracted from electronic recordings. Blood donation is allowed after a minimum of one-month post symptom’s relapse. Donors were 69.7% males and their average age was 46. The 250 donors who had later donations after a positive one underwent further analysis. Both qualitative (positivity) and quantitative (rise or decline of optical density regarding consecutive donations) outcomes were evaluated.

Results and discussion
In 97.6% of donors with follow-up, anti-SARS-CoV-2 protein N total antibodies remained positive at the end of a follow-up period of 12.4 weeks median time (1–46, SD = 9.65) after the first positive determination. The blood group was not related to antibody waning. Lower lymphocyte counts and higher neutrophils would help predict future waning or decay of antibodies. Most recovered donors maintain their total anti-SARS-CoV-2 N protein antibodies for at least 16 weeks (at least one month must have been awaited from infection resolution to blood donation). The 10 individuals that could be followed up longer than 40 weeks (approximately 44 weeks after symptom’s relapse) were all still positive.
LABOR POTENTIAL OF THE RURAL POPULATION OF THE NOVOSIBIRSK REGION: STATUS AND PROSPECTS
Authors: Kapelyuk Z. A. , Frolov D. V. 
Published: February 2022

The article presents the results of the study of labor potential on the example of the rural population of municipal districts of the Novosibirsk region. During the research, the databases of the state Statistics Service and the Ministry of Labor and Social Development of the Novosibirsk Region for the period from 2015 to 2021 were used.
In connection with this goal, the article examines the structure of the population of the region with the allocation by urban and rural settlements; by age variables (by the number of years and in relation to the period of working capacity); indicators by municipal districts. The data on migration of the rural population are compared.
To characterize the quality of labor potential, an assessment of the performance indicators of municipal districts, depending on the number of permanent population of the districts, was carried out. The degree of use of human capital studied based on the analysis of the average number of employees of economic entities by type of activity. To assess study the potential of labor resources, the unemployment rate for municipal districts is considered.
SYSTEMATIZATION OF SCIENTIFIC AND METHODOLOGICAL APPROACHES TO CONTENT OF THE CONCEPT OF "INFRASTRUCTURE FOR SUPPORTING BUSINESS STRUCTURES" IN THE CONTEXT OF REFORMING OF DEVELOPMENT INSTITUTIONS
Authors: Chernavskih E. N. 
Published: February 2022

The systemic limitation of the further development of Russian entrepreneurship is its infrastructure support. Insufficient development of the support infrastructure remains an urgent scientific and practical problem in the context of the announced transformation of business development institutions. The purpose of the article is to identify and systematize theoretical approaches to the content of the concept “support infrastructure of business structures’ for their comprehensive consideration in the subsequent assessment of the adaptation capabilities of infrastructure to the new conditions of economic policy. The author’s analysis of the research has shown that over the past decades there has been a set of terms that define the concept of “support infrastructure of business structures’ with varying accuracy. Thanks to the application of content analysis, it is established that the category of “support infrastructure of business structures’ is formulated within the framework of functional, object and
territorial approaches. For the first time, the components of this concept, identified in this way, as well as the classification of its elements. This can become the basis for a theoretical systematization and a comprehensive assessment of the adaptive capabilities of the infrastructure in transforming conditions.
„Narodowość” poetyki – dylematy typologiczne
Authors: Balcerzan Edward 
Published: February 2022

Poetyka rozumiana jako leksykon zdefiniowanych – ilustrowanych wybranymi przykładami - terminów, opisujących literackie kompozycje, ich składniki lub stosunki między elementami utworu, składa się z pojęć o zasięgu uniwersalnym lub lokalnym, przy czym może to być zarówno lokalność rodzima, jak i obca. Postrzeganie genezy terminów zmienia się w czasie historycznoliterackim. Podobnie dynamiczny charakter ma „narodowość” i/lub „transnarodowość”, pojmowane jako nacechowanie poetyki dzieła lub zbioru dzieł, objawiające się w trzech nie do końca tożsamych i nie do końca odmiennych porządkach: językowym, kulturowym i etnicznym. Owe porządki nie tylko wzajem się przenikają, wspierają, ale i wchodzą w konflikt.
PENTINGNYA SIKAP TOLERANSI DI MASA PANDEMI COVID-19
Authors: Hasana Frila Damayanti , . Supriyono , Nugraha Dadi Mulyadi 
Published: February 2022

This study aims to determine how tolerant society is due to a new virus that changes our lives. With this virus, people cannot carry out their social functions properly. The method used in this article is a qualitative research method. The data collection technique used was through the distribution of questionnaires.The distribution of questionnaires was given to the general public as many as 52 people. The results of this study indicate that 1) tolerance is an attitude of respect for one another even though everyone in the world has differences, be it ethnicity, race, or whatever. 2) With an attitude of tolerance that we apply in everyday life, people can have more respect for differences in their social environment and tolerance can prevent divisions in society. 3) Virus corona can make people stop carrying out their functions in social life. This can affect the tolerance and solidarity that exists in society. 4) The tolerance that existed in society during a pandemic was quite high.
Penelitian ini bertujuan untuk mengetahui bagaimana sikap toleransi masyarakat akibat adanya virus baru yang membuat kehidupan kita berubah. Dengan adanya virus ini, masyarakat tidak bisa menjalankan fungsi sosialnya dengan baik. Metode yang digunakan dalam artikel ini adalah metode penelitian kualitatif. Teknik pengumpulan data yang digunakan adalah melalui pembagian kuisioner. Pembagian kuisioner diberikan kepada masyarakat umum sebanyak 52 orang. Hasil penelitian ini menunjukkan bahwa 1) toleransi adalah sikap menghargai satu sama lain walaupun setiap orang di dunia memiliki perbedaan baik itu suku, ras, atau apapun.2) dengan adanya sikap toleransi yang kita terapkan dalam kehidupan sehari-hari, masyarakat bisa lebih menghargai terhadap perbedaan yang ada di lingkungan sosialnya dan juga sikap toleransi dapat mencegah terjadinya perpecahan di masyarakat. 3) Adanya virus corona dapat membuat masyarakat berhenti menjalankan fungsinya dalam kehidupan sosial. Hal ini dapat berpengaruh kepada sikap toleransi dan solidaritas yang ada di masyarakat. 4) sikap toleransi yang ada di masyarakat pada masa pandemi cukup tinggi.
Pemberdayaan Masyarakat Melalui Diversifikasi Produk Ikan Puri (Stolephorus sp.)
Authors: Ernawati Ernawati , Hismayasari Intanurfemi B. , Puspitasari Astervina W. , Ismail Ismail , Ulat Muhammad Ali , Poltak Hendra 
Published: February 2022

Kegiatan ini bertujuan untuk mendampingi dan memberikan pelatihan kepada masyarakat kelompok nelayan victory jaya tentang diversifikasi ikan puri demi meningkatkan nilai ekonominya. Kegiatan ini diikuti oleh 25 peserta diantaranya 11 nelayan, 3 wiraswasta dan 11 istri nelayan. Pada pembuatan sambal puri menggunakan bahan baku cabe merah, bawang putih, bawang merah, terasi udang dan ikan puri kering. Metode pelaksanaan melalui pelatihan dan pendampingan praktik secara langsung. Berdasarkan hasil pelatihan tersebut, masyarakat memiliki selera tingkat kepedasan pada produk sambal berbeda-beda diantaranya 54% menyukai sangat pedas, 33% menyukai pedas dan 8% tidak menyukai pedas. Namun, hasil pelatihan pengolahan sambal dihasilkan cita rasa yang menggunggah selera sehingga produk yang dihasilkan diharapkan dapat disimpan dalam waktu yang lama serta mudah diterima oleh masyarakat.
Analisis Kelayakan Usaha Perikanan Bagan Tancap di Perairan Karawang
Authors: Perangin-angin Robet , Dian Sutono  , Andre Michael  , Mustasim Mustasim , Dendi Haris  , Mohamad Ardi Partadisastra  
Published: February 2022

Penelitian ini bertujuan untuk mengetahui kelayakan usaha perikanan bagan tancap. Jenis penelitian merupakan penelitian deskriptif kuantitatif. Variabel kelayakan usaha yang dianalisis dalam penelitian ini berupa NPV (Net Present Value), IRR (Internal Rate of Return), dan Benefit Cost Ratio (B/C Ratio). Hasil kajian usaha perikanan bagan tancap yang dilakukan pada perairan pesisir kabupaten Karawang, diperoleh nilai R/C ratio sebesar 1,31; Payback Period (PP) sebesar 1,37; nilai Return on Investment (ROI) sebesar 0,24; nilai NPV sebesar Rp. 153.466.594; Net B/C ratio 2,47; dan Internal Rate of Return (IRR) sebesar 76,47%. Indikator-indikator analisis finansial tersebut, memberikan konfirmasi bahwa perikanan bagan tancap ini layak untuk diusahakan dan dikembangkan.
ANALISIS DETERMINAN BIAYA TRANSAKSI (Studi Kasus Tambak Bandeng Kecamatan Juwana Kabupaten Pati)
Authors: Setyanto Alief Rakhman , Iskandar Deden Dinar 
Published: February 2022

Kabupaten Pati diketahui sebagai salah satu daerah penghasil ikan budi daya (khusus produksi Bandeng) terbesar di Propinsi Jawa Tengah Kabupaten yang secara geografis terletak di sepanjang pantai utara ini mempunyai kemampuan pengembangan usaha perikanan yang sangat besar, baik perikanan budi daya atau perikanan tangkap. Perikanan di kabupaten Pati cukup potensial untuk dikembangkan dan diharapkan menjadi salah satu sektor andalan dalam pengembangan kemampuan daerah di masa yang akan datang. Penelitian ini dilakukan di Kecamatan Juwana dan bertujuan untuk mengidentifikasi biaya transaksi yang muncul pada petani tambak di Kecamatan Juwana serta menganalisis determinan biaya transaksi yang muncul pada petani tambak Kecamatan Juwana. Penelitian ini menggunakan data cross section dengan sampel 98 petani tambak bandeng. Pendekatan analisis menggunakan statistik deskriptif dan analisis regresi berganda OLS (ordinary least square). Hasil penelitian menunjukkan biaya transaksi yang paling banyak muncul di kalangan petani tambak adalah biaya transportasi, sedangkan determinan biaya transaksi yang terdiri dari ketidakpastian, dan frekuensi yang berpengaruh negatif terhadap biaya transaksi. Jaringan sosial dan jaringan pertemanan berpengaruh positif terhadap biaya transaksi, trust berpengaruh negatif terhadap biaya transaksi, kelembagaan berpengaruh negatif terhadap biaya transaksi dan penyuluhan berpengaruh positif terhadap biaya transaksi. Tittle: Analysis of Transaction Cost Determinants (Study of Tambak Bandeng in Juwana District Pati Regency)Pati Regency is well-known as one of the largest aquaculture area (especially milkfish production) in Central Java Province. The district is geographically located along the north coast. It is potentially developed with a considerable fishery business both in aquaculture and capture fisheries. Its fisheries resource becomes a prospect sector for the future growth of the area. The research was conducted in Juwana Sub-district. It aims to identify transaction costs among the pond farmers in Juwana Sub-district and analyze the determinants of the transaction costs. The study used cross sectional data from 98 milkfish farmers. The analysis approach used descriptive statistics and OLS multiple regression analysis (ordinary least square). Results of the study showed that transaction costs that most frequently occur among pond farmers are transportation costs, while the determinants of transaction costs which consist of uncertainty and frequency negatively affect transaction costs. Friendship and social networks have positive effect on transaction costs, trust has negative effect on transaction costs, institution has negative effect on transaction costs and counseling has positive effect on transaction costs.
Optimizing the Role of Social Media for Fisheries Business Development (Case Study in the Middle of Covid 19 Pandemic in West Java)
Authors: Nurhayati Atikah , Riyantini Indah , Nurruhwati Isni , Aisah Isah 
Published: February 2022

The spread of the Covid 19 outbreak felt its impact in the fisheries sector. The spread of Corona Virus has brought new challenges and risks in social life, including fisheries businesses. Fishery business practitioners, namely fishermen, fish cultivators, fishery product processors and fishery product marketers, experience logistical and marketing problems. Some indications of the impact of the Covid-19 pandemic are evident in the fisheries business. These indications are a decrease in the price of fishery products, a logistic system that cannot run normally, and a decrease in demand for fishery products, all of which impact on the household income of the fishery business. The disruption of distribution channels between businesses and consumers due to restrictions on human mobility that is applied to overcome the Covid 19 outbreak is the root cause. Regional quarantine as well as large-scale social restrictions do not prohibit mobility in the transportation of goods, but in reality these restrictions significantly impede the traffic of fishery products. This is reminiscent of the implementation of the 4.0 revolution in the fisheries and marine sector, where fisheries and marine businesses including fish farmers to innovate in the use of automation tools that are controlled from smartphone applications. With digital applications, cultivation can use it to anticipate during current conditions, when the Covid 19 pandemic occurs, where market access is directly restricted which can be circumvented by online marketing where producers and consumers do not make transactions directly. This reserach aims to analyze the optimization of the role of social media for the development of fisheries business case studies in the middle of the Covid 19 pandemic in West Java. Research time is from February to May 2020. The research method used was a survey method. The data used are primary and secondary data. Primary data were obtained by taking the technique of non-probability sampling respondents to 40 respondents of fisheries businesses. The analytical tool used in this reserach is non-parametric statistics with Friedman and Kendalls using twigs to scale. Based on the results of research, the level of knowledge of fisheries business operators regarding handling of Covid 19 averages 70% of knowing, understanding and implementing health protocols in carrying out daily activities, the role of social media is high for fisheries business actors consisting of fishermen, fish cultivators, fishery product processors and marketer of fishery products. Social media used include Instagram, Short Message Service (SMS), Websites, Blogs, Facebook and Whatsapps. The most optimal use of social media activities is carried out by fishery product marketers via Whatsapps. and Instagram.
PEMETAAN DAYA SAING PRODUK PERIKANAN PULAU JAWA DI PASAR TUJUAN UTAMA
Authors: Achsa Andhatu , Destiningsih Rian , Septiani Yustirania , Verawati Dian Marlina 
Published: February 2022

Penelitian ini dilatarbelakangi adanya penurunan nilai ekspor perikanan yang terjadi di tahun 2003 hingga 2016, walaupun setelah itu mengalami peningkatan kembali. Hal tersebut diduga terjadi karena kuantitas ekspor perikanan mengalami penurunan sebesar -0,15 persen. Adapun usaha awal mencegah penurunan ekspor perikanan semakin berkepanjangan yaitu dengan mengidentifikasi wilayah produksi perikanan yang memiliki keunggulan komparatif dan kompetitif. Dalam hal ini, sentra perikanan dibagi menjadi dua kelompok yaitu perikanan tangkap dan perikanan budi daya. Metode yang digunakan antara lain Shiftshare Esteban Marquilas (SS-EM), Revealed Comparative Advantage (RCA) dan metode Ekspor Produk Dinamika (EPD). Hasil penelitian menunjukkan daya saing perikanan hanya ada pada provinsi DIY; sedangkan provinsi lainnya hanya memiliki spesialisasi. Selanjutnya, daya saing perikanan Indonesia pada ketujuh pasar tujuan utama ekspor perikanan yaitu Tiongkok, Jepang, Hongkong, Amerika Serikat, Malaysia, Uni Eropa dan ASEAN memiliki daya saing kuat. Selanjutnya, produk perikanan Indonesia selama tahun 2000-2018 tergolong rising star pada pasar Malaysia, Tiongkok dan Amerika Serikat.Title: Mapping The Competitiveness of Java Island Fishery Products In Main Destination MarketThe decrease of fisheries export values from 2003 to 2016 initiated this research. Despite its increasing afterwards, the decreasing is presumed due to the decrease of export quantities by -0.15 percent. Initial effort to prevent on decreasing of export quantities is identifying fisheries production centers with comparative and competitive advantages. Fisheries production centers are divided into two groups: capture fisheries and aquaculture. Shiftshare Esteban Marquilas (SS-EM), Revealed Comparative Advantage (RCA) and Export Product Dynamics (EPD) methods are employed in this research. The results indicate that fisheries competitiveness is only seen in Yogyakarta, while other provinces only have specialization in fisheries. It is notified that competitiveness of Indonesian fisheries products is considered strong in seven market destination: China, Japan, Hongkong, United States, Malaysia, European Union, and ASEAN countries. Furthermore, Indonesian fisheries products in 2000 - 2018 has been acknowledged as rising star in several market destination: Malaysia, China and United States.
Compressive strength of heterogeneous masonry walls containing blends of brick types
Authors: Benedetti Andrea , Tarozzi Mirco 
Published: February 2022

AbstractThe study presents a systematic approach for the evaluation of the compression strength of masonry walls composed of heterogeneous mixes of different types of blocks. First of all, the mechanics of a compressed heterogeneous masonry stack is investigated through a series of experimental tests and Finite Element models, then it is reviewed and discussed. Then, the problem of deriving the necessary material parameters entering the Hilsdorf formula is addressed. Solutions for the correct evaluation of the lacking data are presented based on the existing literature data. Finally, the well-known Hilsdorf formula is extended to the field of block blends with different mechanical properties. A deep experimental investigation on stacks and wallets made with fired clay, limestone and sandstone blocks is introduced for the first time. The comparison of the experimental data with the proposed theory points out the very good predictive capability of the extended Hilsdorf formula derived herein.
Automated Detection of Clipping in Broadband Earthquake Records
Authors: Kleckner James K. , Withers Kyle B. , Thompson Eric M. , Rekoske John M. , Wolin Emily , Moschetti Morgan P. 
Published: February 2022

Abstract
Because the amount of available ground-motion data has increased over the last decades, the need for automated processing algorithms has also increased. One difficulty with automated processing is to screen clipped records. Clipping occurs when the ground-motion amplitude exceeds the dynamic range of the linear response of the instrument. Clipped records in which the amplitude exceeds the dynamic range are relatively easy to identify visually yet challenging for automated algorithms. In this article, we seek to identify a reliable and fully automated clipping detection algorithm tailored to near-real-time earthquake response needs. We consider multiple alternative algorithms, including (1) an algorithm based on the percentage difference in adjacent data points, (2) the standard deviation of the data within a moving window, (3) the shape of the histogram of the recorded amplitudes, (4) the second derivative of the data, and (5) the amplitude of the data. To quantitatively compare these algorithms, we construct development and holdout datasets from earthquakes across a range of geographic regions, tectonic environments, and instrument types. We manually classify each record for the presence of clipping and use the classified records. We then develop an artificial neural network model that combines all the individual algorithms. Testing on the holdout dataset, the standard deviation and histogram approaches are the most accurate individual algorithms, with an overall accuracy of about 93%. The combined artificial neural network method yields an overall accuracy of 95%, and the choice of classification threshold can balance precision and recall.
Evaluation of rationality of fixed dose combinations of antimicrobials available in Indian market
Authors: Srivastava Rohan , Kantharia N. D. 
Published: February 2022

Background: The antimicrobial resistance is alarming at present. One of the important factors for resistance is use of irrational fixed dose combinations. Thus, objective was to critically analyze the rationality of FDCs of antimicrobial agents currently available in India.Methods: The FDCs of AMAs enlisted in Indian Drug Review 2019 were analyzed by 8 point criteria tool. Analysis includes number of active pharmacological ingredients, approval by central drug standard control organization, listing in world health organization model list of essential medicines (2019) or Government of India national list of essential medicines (2015). Literature search was used for assessing efficacy, safety, pharmacokinetic and pharmacodynamic interactions and advantages of each FDC. Each criterion was assigned score one, if positive and minus one, if negative leading to total score of 12. FDC with score of ≥7 was considered as rational. Results: The FDCs of AMA available in Indian market were 116 while FDCs included in WHO model list, 2019 were 24. Majority of FDCs available were irrational that include combination of antibacterial with bromhexine, carbocisteine, ambroxol, serratiopeptidase, antiamoebic and antifungal etc. Most of the rational FDCs belong to antiretroviral, antitubercular and antimalarial drugs. Conclusions: Most of the FDCs of AMAs available in Indian market are irrational. These needs educating the prescribers including resident doctors. There is need to critically review such FDCs by drug regulators with strict action regarding manufacturing and marketing.