bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Dukungan Organisasi Terhadap Motivasi Berprestasi Pegawai pada Kantor Badan Pemberdayaan Masyarakat dan Pemeritahan Desa Kabupaten Pangkep
Authors: Hasan Basri , Masniah Andi , Sumarsih Sumarsih , Rahman ARayid
Published: April 2023

Penelitian ini bertujuan untuk mengetahui dan menganalisis pengaruh dukungan organisasi terhadap motivasi berprestasi pegawai pada Kantor Badan Pemberdayaan Masyarakat dan Pemeritahan Desa Kabupaten Pangkep. Jenis data yang digunakan dalam penelitian ini adalah data primer yaitu jawaban kuesioner dari responden dengan analisis data menggunakan regresi linear berganda. Sampel pada penelitian ini adalah 43 responden yaitu pegawai pada Kantor Badan Pemberdayaan Masyarakat dan Pemeritahan Desa Kabupaten Pangkep. Hasil penelitian menunjukkan bahwa: terdapat kontribusi positif dukungan organisasi terhadap motivasi berprestasi pegawai pada Kantor Badan Pemberdayaan Masyarakat dan Pemeritahan Desa Kabupaten Pangkep. Artinya semakin semakin baik dukungan yang diberikan organisasi tempat bekerja, maka cenderung semakin meningkat motivasi berprestasi pegawai. Kata Kunci: Dukungan organisasi dan motivasi   berprestasi pegawai.
Pengaruh Bauran Pemasaran Jasa Terhadap Keputusan Pembelian Pada Pelanggan Yang Menggunakan Jasa Pengiriman Di Kantor Pos Dan Giro Gorontalo
Authors: Salawali Siti Hajrin , Wolok Tineke , Abdussamad Zulfia K.
Published: April 2023

AbstrakPenelitian ini bertujuan untuk mengetahui dan menganalisis 1) pengaruh Product terhadap Keputusan Pembelian pada pelanggan yang menggunakan jasa pengiriman di Kantor Pos dan Giro Gorontalo, 2) pengaruh Place terhadap Keputusan Pembelian pada pelanggan yang menggunakan jasa pengiriman di Kantor Pos dan Giro Gorontalo. Teknik pengambilan sampel menggunakan simple random sampling yaitu sebanyak 45 orang. Teknik Pengumpulan data dalam penelitian ini menggunakan kuesioner yang dibagikan kepada orang yang pernah menggunakan jasa pengiriman di Kantor Pos dan Giro Gorontalo sebagai responden. Alat uji analisis yang digunakan dalam menguji penelitian ini yaitu analisis regresi linier sederhana.Hasil penelitian menunjukan bahwa hasil uji t (parsial) 1) produk berpengaruh terhadap keputusan pembelian ditunjukkan dengan t hitung lebih besar dari t tabel (4.187 > 1,681), 2) lokasi berpengaruh terhadap keputusan pembelian ditunjukkan dengan nilai t hitung lebih besar dari t tabel (4.569 > 1,681), Berdasarkan perhitungan koefisien determinasi menunjukkan R Square sebesar 84,9% dikategori sangat kuat, sedangkan sisanya 15,1% dipengaruhi oleh variabel lain yang tidak diteliti dalam penelitian ini seperti variabel customer service, kualitas layanan, ketepatan waktu, harga, dan citra perusahaan. Kata Kunci: Bauran pemasaran jasa, Keputusan pembelian. AbstractThis present research animed to determine and analyze 1) the effect of the product on purchase decision for customers who use delivery services at the Gorontalo Post dan Giro Office and 2) the effect of place on purchase decision for customers who use delivery services at the Gorontalo Post and Giro Office. The sampling technique used simple random sampling with a total sample of 45 people. The date collection technique used was questionnaires distributed to people who had user delivery services at the Gorontalo Post and Giro Office. At the same time, the analytical test tool used in testing this research was simple linear regression analysis.The results of the t-test (partial) denoted that 1) product affected the purchase decision, as indicated by t-count was higher than t-table (4.187 < 1.681), and 2) place affected the purchase decision, as indicated by t-count value was higher than t-table (4.569 > 1.681). Furthermore, the calculation of the coefficient of determination obtained the R Square value of 84.9% with a highly significant effect category. In comparison, the remaining 15.1% were affected by other variables not examined in this research, suchas customer service, service quality, timeliness, price, and corporate image.  Keywords: Service Marketing Mix, Purchase Decision.
Pengaruh Motivasi Dan Kedisiplinan Kerja Terhadap Kinerja Pegawai Pada Kantor Dinas Sosial Provinsi Sulawesi Selatan
Authors: Yusuf Nurdin , Fadillah Andi Nur , Rizal Rizal , Rais Muh.
Published: April 2023

Penelitian ini bertujuan untuk mengatahui pengaruh motivasi dan kedisiplinan kerja terhadap kinerja pegawai pada Kantor Dinas Sosial Provinsi Sulawesi selatan. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif dengan sampel sebanyak 64 responden. Teknik pengumpulan data dengan menggunakan Teknik kuisioner. Analisis yang digunakan dalam penelitian ini adalah uji regresi linear berganda. Hasil pengujian secara simultan variabel motivasi dan kedisiplinan kerja berpengaruh positif dan signifikan terhadap variabel kinerja pegawai yang dibuktikan berdasarkan hasil uji simultan dengan nilai signifikansi f<α (0,000 < 0,05). Hasil pengujian secara parsial variabel Motivasi berpengaruh positif tidak signifikan terhadap variabel kinerja pegawai yang dibuktikan dengan nilai signifikansi t>α (0,306 > 0,05). Hasil pengujian secara parsial variabel kedisiplinan kerja berpengaruh positif dan signifikan terhadap variabel kinerja pegawai yang dibuktikan dengan nilai signifikansi t<α (0,001 < 0,05). Kata kunci: Motivasi; Kedisiplinan Kerja; Kinerja Pegawai
Evaluasi Kinerja Portofolio Saham dengan Menggunakan Metode Sharpe, Treynor, dan Jensen Periode 2016-2020
Authors: Sari Ema , Nurhayati Nurhayati , Umar Fitriana
Published: April 2023

Penelitian ini bertujuan untuk menganalisis kinerja portofolio saham-saham pada Sub sektor Kabel pada periode 2016-2020 dengan menggunakan metode Sharpe, Treynor, dan Jensen. Metode yang digunakan dalam penelitian ini adalah metode deskriptif Kuantitatif dimana penelitian ini berusaha untuk menganalisis, menjelaskan, dan mendeskripsikan kinerja portofolio saham dengan menggunakan metode Sharpe, Treynor, dan Jensen. Hasil dari penelitian ini menunjukkan return portofolio saham pada periode tersebut semuanya bernilai positif dan Return yang memiliki nilai maksimum adalah Jembo Cable Company Tbk (JECC). Hasil perhitungan dengan metode Sharpe didapatkan hasil bahwa kinerja portofolio terbaik selama periode penelitian 2016-2020 adalah Kabelindo Murni (KBLM) dan kinerja terendah selama 2016-2020 adalah Sumi Indo kabel Tbk (IKBI). Hasil perhitungan menggunakan metode Treynor didapatkan hasil bahwa kinerja portofolio terbaik selama periode penelitian 2016-2020 adalah Kabelindo Murni Tbk (KBLM) dan kinerja terendah selama 2016-2020 adalah Jembo Cable Company Tbk (JECC). Hasil perhitungan menggunakan metode Jensen didapatkan hasil bahwa kinerja portofolio terbaik selama periode penelitian 2016-2020 adalah Jembo Cable Company tbk (JECC) dan kinerja terendah selama 2016-2020 adalah Sumi Indo kabel Tbk (IKBI). Kata Kunci: Kinerja Portofolio, Sharpe, Treynor, Jensen.
THINGSplus: New norms and metadata for the THINGS database of 1854 object concepts and 26,107 natural object images
Authors: Stoinski Laura M. , Perkuhn Jonas , Hebart Martin N.
Published: April 2023

To study visual and semantic object representations, the need for well-curated object concepts and images has grown significantly over the past years. To address this, we have previously developed THINGS, a large-scale database of 1854 systematically sampled object concepts with 26,107 high-quality naturalistic images of these concepts. With THINGSplus, we significantly extend THINGS by adding concept- and image-specific norms and metadata for all 1854 concepts and one copyright-free image example per concept. Concept-specific norms were collected for the properties of real-world size, manmadeness, preciousness, liveliness, heaviness, naturalness, ability to move or be moved, graspability, holdability, pleasantness, and arousal. Further, we provide 53 superordinate categories as well as typicality ratings for all their members. Image-specific metadata includes a nameability measure, based on human-generated labels of the objects depicted in the 26,107 images. Finally, we identified one new public domain image per concept. Property (M = 0.97, SD = 0.03) and typicality ratings (M = 0.97, SD = 0.01) demonstrate excellent consistency, with the subsequently collected arousal ratings as the only exception (r = 0.69). Our property (M = 0.85, SD = 0.11) and typicality (r = 0.72, 0.74, 0.88) data correlated strongly with external norms, again with the lowest validity for arousal (M = 0.41, SD = 0.08). To summarize, THINGSplus provides a large-scale, externally validated extension to existing object norms and an important extension to THINGS, allowing detailed selection of stimuli and control variables for a wide range of research interested in visual object processing, language, and semantic memory.
Transition-metal-catalyzed domino reactions of strained bicyclic alkenes
Authors: Pounder Austin , Neufeld Eric , Myler Peter , Tam William
Published: April 2023

This review presents a comprehensive overview of transition-metal-catalyzed domino reactions of strained bicyclic alkenes, including both homo- and heterobicyclic alkenes. These compounds are important synthons in organic synthesis, providing an important platform for the construction of biologically/medicinally significant compounds which bear multiple stereocenters. The review has been divided according to the metal used in the reaction. An overview of the substrate scope, reaction conditions, and their potential applications in organic synthesis is discussed. A comprehensive outlook on the reactivity paradigms of homo- and heterobicyclic alkenes is discussed and should shed light on future directions for further development in this field.
Trabajo remoto y desempeño laboral de los servidores públicos de la Municipalidad Distrital de Pillco Marca, Huánuco, 2020
Authors: Martel-Carranza Christian , Narvaez del Aguila Miguel Bryan , Cabrera Fabian Liz Silene Victoria
Published: April 2023

Objetivo. El presente trabajo de investigación se desarrolló con la finalidad de determinar la relación existente entre el trabajo remoto y el desempeño laboral de los servidores público de la Municipalidad Distrital de Pillco Marca, Huánuco (Perú), 2020. Métodos. La investigación, por su profundidad, fue de un nivel descriptivo-correlacional; así mismo, por su finalidad fue de tipo aplicada. El diseño de la investigación fue no experimental, de corte transversal y en su forma de investigación, correlacional, debido a que fue orientado a la determinación del grado de relación existente entre dos o más variables, siendo el caso de la variable trabajo remoto y la variable desempeño laboral. La muestra estuvo conformada por 101 servidores públicos de la Municipalidad Distrital de Pillco Marca durante el año 2020. Se utilizó el método de recolección de datos secundarios aplicando la técnica de la encuesta. Resultados. Los resultados indican que las variables de estudio se relacionaban positivamente, pero de forma muy baja/débil; esto fue debido a que estadísticamente el baremo de estimación de la correlación de Spearman fue de 0,190. Debido a estos resultados se rechazó la H0 y se aceptó la H1. Conclusiones. Se determinó que el trabajo remoto y el desempeño laboral de los servidores público de la Municipalidad Distrital de Pillco Marca se relacionan positivamente, pero de manera muy baja.
HUMAN VS ARTIFICIAL INTELLIGENCE IN DIGITAL VS HUMAN TRANSLATION
Authors: RYABTSEVA N.K.
Published: April 2023

The paper analyzes MT of an abstract to an authentic scientific text in English and exemplifies the types and kinds of MT mistakes characteristic to the contemporary level of MT of scientific texts from English into Russian. It is pointed out that MT of scientific texts differs considerably from MT of texts belonging to most other domains mainly because it vividly exposes human language' asymmetry, incongruence in cross-linguistic correspondences, and their interference. It is proposed that MT of scientific texts demands considerably more sophisticated linguistic software precisely tuned to cross-linguistic correspondences in general and to particular subject area in particular.
Analysis of the Gynecologic Cancer Surgery with Pre-pandemic Protocols in a COVID-19 Free Cancer Center Gynecologic Cancer Surgery in COVID-19 Free Center
Authors: ATALAY Funda , ÖZTÜRK BAŞARIR Zehra
Published: April 2023

Abstract:

Objective: COVID-19 has caused a rapid transformation in the healthcare system, including in particular, the care of vulnerable cancer patients. The aim of this study was to present our clinical experience in gynecological cancer surgeries in a COVID-19-free cancer hospital during the pandemic.

Methods: A retrospective analysis was made of the data of patients with ovarian, endometrium, cervix and vulva cancers who were treated with surgery between March 2020 and March 2021, with particular focus on the complication rates on day 30, and at the end of one year.

Results: The study included a total of 74 patients with mean age of 59 years. The most common diagnosis was ovarian cancer (48.6%) followed by endometrial (43.2%), cervical (6.8%) and vulvar cancer (1.4%). Most of the patients were in advanced stage (FIGO 3 and 4) of ovarian (86%), endometrial (59.4%) and cervical local advanced (60%) cancer. The complication rate was 17.6 %. Surgery was delayed in one patient with a preoperative positive polymerase chain reaction (PCR) test for COVID-19 infection, and none of the patients had a positive test result in the early postoperative period.

Conclusion: COVID-19-free institutions for cancer surgery, is an effective treatment strategy in the context of the pandemic. The results of this study indicate that continuity of cancer treatment can be achieved safely, with strict adherence to COVID-19 precautions for both patients and healthcare workers.

Keywords: COVID-19, gynecological cancer, surgery, treatment
Forest nurseries and the National Recovery and Resilience Plan: the case of Sicily and Apulia (Italy)
Authors: Pardi Raimondo , Venturella Giuseppe , Domina Gianniantonio , Di Gristina Emilio , Cirlincione Fortunato , Gargano Maria Letizia
Published: April 2023

In Italy, the National Recovery and Resilience Plan (NRRP) foresees the planting of ca. 6.6 million trees to establish urban and peri-urban forests in 14 metropolitan cities. This ambitious project requires a significant number of native trees and shrubs, currently unavailable in Italian public and private nurseries. This survey analyzes the state of forest nurseries in two administrative regions of southern Italy, i.e. the “Filici” forest nursery (province of Agrigento, Sicily) and the Gargano Mountain Reclamation Consortium (province of Foggia, Apulia), to evaluate the adequacy of Sicilian and Apulian forest nurseries as potential sources of plant material to meet the requirements of the NRRP. The census carried out at the “Filici” nursery revealed the presence of more than 22,000 seedlings in cultivation, comprising 55 species, 26 genera, and 26 families. The autochthonous species are 43 (78.2%), while the exotic ones are 12 (21.8%). The Gargano Mountain Reclamation Consortium forest nursery has 190,876 seedlings in cultivation. A total of 80 species are present, belonging to 59 genera and 32 families. Of these, 68 (85%) are native species, 12 (15%) are exotic. An analysis of the plant material being cultivated in these forest nurseries shows the presence of a share of autochthonous species of interest for urban reforestation initiatives, however these are still insufficient in number.
Dataset for mosquitoes (Diptera, Culicidae) from Gun Club Road, Key Largo, Monroe County, Florida, USA
Authors: Boehmler Michael , DeMay David , Rogers Adriane , Murray Heidi , Hribar Lawrence
Published: April 2023

The Florida Keys Mosquito Control District utilises dry ice-baited light traps to monitor mosquito populations on Key Largo, Florida. This paper describes the methodology of trapping, habitat description and dataset of adult mosquito populations from 18 years of weekly monitoring from a single site on Key Largo, Monroe County, Florida, USA.

This paper details a previously unreported dataset derived from trap collections made on Key Largo, Florida at a site designated as “Gun Club Road.”
Caribbean Amphipoda (Crustacea) of Panama. Part I: parvorder Oedicerotidira
Authors: Durham Elizabeth L. , White Kristine N.
Published: April 2023

Amphipods in the parvorder Oedicerotidira are burrowers, furrowers, or surface skimmers. Members of the parvorder share a well-developed posteroventral lobe on coxa 4, an equilobate coxa 5, an immensely elongate pereopod 7 that differs in structure from pereopod 6, and an entire telson. Within the parvorder, only the family Oedicerotidae has been documented from Bocas del Toro, Panama, represented by two species. This research documents a range extension for Hartmanodes nyei (Shoemaker, 1933) and describes a new species of Synchelidium Sars, 1892. An identification key to the species of Caribbean Oedicerotidae of Panama is provided.
Advocating Empowerment and Gender Equality
Authors: Roveri Isabella , Fernandes Rita , Pereira Rita , Plácido Vitória , Szczygiel Nina
Published: April 2023

The UN 2030 Agenda for Sustainable Development acknowledges that economic growth that countries are seeking need to be accompanied by same-degree efforts to combat inequality, eradicate poverty, and protect the planet's environment and climate, and has been recognized by organizations and individuals for its quest of sustainable development. This study focuses on the fifth sustainable development goal: gender equality, applied into the tourism industry. Tourism has become one of the main sectors for today's economy, thanks to its weight in the GDP, as well as its contribution to job creation and employment rate translated into local populations' well-being. The chapter aims to analyze and discuss the role and importance of entrepreneurship allied to tourism to achieve gender equality. The analysis of case studies comprises a series of community-based tourism initiatives developed in four different continents and selected on the basis of specific criteria, such as the role of women, and the rural, tourist, and community environment.
Indigenous and Tribal Tourism
Authors: Sharma Amit
Published: April 2023

The interest in indigenous and tribal tourism is increasing rapidly in the new era of technologically savvy, thoughtful, and responsible travellers looking to explore less-travelled regions. This type of tourism is classified as “niche tourism,” which falls under the umbrella of the sustainable tourism domain. Changed consumer behaviour has created the demand for a coherent market, which is related to the aforementioned business stream. Indigenous people are living in the natural environment in the hinterlands, which stems from inherent traditional knowledge, sustainable practices, and mystery traditions. This mysticism has led to the creation of the niche segment of indigenous and tribal tourism among the travel-savvy population around the world. Different marketing and business strategies are required to cater to different subsets of clients who may be suitable for this type of tourism.
Reinforcing Tourism Carrying Capacity Assessments
Authors: Sharma Ravi
Published: April 2023

Carrying capacity assessment assists in estimating human intervention thresholds bearable to natural-social ecosystems, specifically in tourism. Earlier studies implemented isolated determining system combinations, namely physical-ecological, socio-cultural, political-economic, and perceptual-psychological, impacting carrying capacity assessments. Results obtained through experts' opinion and systematic literature review meta-analysis suggest a lack of policy-governance components. Imperatively, policy matters governing environmental issues are crucial; especially in tourism, policy-governance systems form holistic components for achieving resilience and enhanced thresholds. This must be well-integrated into the carrying capacity assessment framework, as proposed and outlined as an outcome of this review and in the best interest of society. Validation of the framework using accurate data from the tourism domain through further research will motivate researchers and practitioners.
The Impact of Tourism Development on Community Quality of Life (QoL)
Authors: Oztosun Latif
Published: April 2023

The impact of planners' development operations on host governments and residents has emerged as a growing subject of study in recent years, as it has become widely accepted that planners and entrepreneurs must consider the perspectives of the host community if the sector is to be successful in the long-term. However, there has been insufficient emphasis on local communities, their needs, and, most crucially, their assessment of the impact on their quality of life. This chapter discusses why and how tourism and hospitality planners must consider inhabitants' attitudes and opinions, particularly when it comes to legislation that may affect their way of life.
Production of Biogas From Biowaste and Its Potential as a Future Alternative Energy for Power Generation
Authors: Mohamed Musthafa M.  , Ashok Kumar T.
Published: April 2023

Due to reducing petroleum reserves' scarcity, the engineer has to consider alternative fuel sources for IC engines. Vegetable oils of the non-edible category can be used as a substitute fuel to diesel fuel and use gaseous fuel as a partial supplement to petrol fuel. Biogas technology offers a desirable direction to utilize certain categories of biomass for meeting partial energy needs. This study is to describe the production of biogas from cow dung in the fabricated floating drum type digester and was stored in the tube. Stored biogas was used as supplement fuel to run the single cylinder 305 cc variable speed engine under no load. The performance and emission characteristics of engines running on biogas and petrol blend were compared to petrol fuel operation. Results revealed that the performance of the engine was improved with the increases in the amount of gas substitution. Brake-specific fuel consumption was found to improve. However, emissions of HC and CO were increased with the increases in gas substitution, and reduced NOx emission was observed.
An Insight Into Applications of IoT in the Agricultural Sector
Authors: Tejaswi K. , Jyothi B. N.  , Jabbar M. A. , Vasavi B.  , Begum Ruqqaiya
Published: April 2023

Precision Agriculture is an advancement in the field of agriculture along with which advancements in other areas like geospatial data availability. Precision farming focuses on measuring soil properties and uses the measurements to optimize soil sampling and management schemes. IoT is seeing a major increase in applications in agriculture due to many reasons like cheaper network availability, reduced cost of devices being used, availability of enormous data, etc. The Initial Traditional Farming practices were agroforestry, intercropping, crop rotation, cover cropping, traditional organic composting, integrated crop-animal farming, shifting cultivation, etc. This chapter will discuss various applications of IoT in the agriculture sector. This study will help the farmers and the people who are associated with the agriculture sector to improve the agriculture industry.
Analysis of Real Estate Prices Using Geospatial Data
Authors: Moralı Orçun , Yilmaz Neslihan
Published: April 2023

The effect of space on real estate prices is critical due to the inherent nature of real estate properties. There exist numerous methodologies in order to incorporate the effect of space into the analysis including the addition of district variables or the use spatial econometric models. Spatial models help with the identification and inference problems compared to the simple hedonic models, yet are harder to work with due to their complexity and resource requirements. In this study, using geospatial data, the authors explain the spatial econometric models and tools available for the analysis of cross sectional real estate data.
Female Entrepreneurship in the Age of Social Media
Authors: Gradim Adriana Coutinho , Daniel Ana Isabel Dias
Published: April 2023

Despite the growth of female entrepreneurship over the last decade, research in this area is still at an embryonic stage. Its development is essential to understand how this phenomenon can be leveraged, allowing to achieve a more inclusive and developed society. Social media platforms have been recognized as a relevant tool in promoting female entrepreneurship, but studies in this area are still limited. Through a bibliometric analysis combined with a literature review, this study concluded that the studies published in this area essentially focus on one of three perspectives: a business creation perspective, a business strategy and performance perspective, and a women's empowerment perspective. Moreover, articles analysed used a diverse range of research methodologies and focused mainly on developing countries. Therefore, future research should include different research perspectives, as well as the analysis of different economic and social contexts to better understand the phenomenon of female entrepreneurship
Females in Social Entrepreneurship
Authors: Fernandes Catarina , Pires Rui Alexandre R.
Published: April 2023

Social entrepreneurship (SE), which aims to solve social problems of deprived groups, has become a popular area of research and practice. The recent investigation on SE has been characterized by a greater focus on gender differences, emphasizing that the role and characteristics of females are more suitable for social entrepreneurial initiatives. This chapter investigates the predominant themes on females in SE and identifies further research opportunities. On the one hand, the main macro (e.g., sociocultural values) and micro (e.g., personality traits) levels determinants are examined. On the other hand, the macro (e.g., social change) and micro (e.g., women economic empowerment) levels outcomes of females in SE are analyzed. Furthermore, directions for future research are suggested which will enable future authors to focus their studies more effectively.
Therapeutic Applications of Social Robots in Rehabilitation
Authors: Mahajan Radhika , Kumar Manoj , Bhatia Ashima Bhatnagar , Whig Pawan
Published: April 2023

The Industrial Revolution 4.0 has produced a wide range of innovative possibilities for the employment of artificial intelligence and computer-guided devices in rehabilitation. In recent times, medical field has shown a keen interest in Human-Robot Interventions (HRI) due to their application in treatment and rehabilitation of various diseases. Social robots are designed to interact with people in a manner that is consistent with human social psychology because of their capacity to elicit social and emotional responses from users. They work in a human-centric environment by speaking, moving, making gestures, or utilizing facial expressions to communicate with their users while adhering to a set of social norms. We outline some intriguing possibilities for social robots in healthcare-related applications in this chapter. Some of these include treatment of social anxiety, dementia, autism spectrum disorder, depression, alzheimer's disease, anorexia nervosa, neurodevelopmental issues, cancer, diabetes and upper limb rehabilitation after stroke.
Training a Legged Robot to Walk Using Machine Learning and Trajectory Control for High Positional Accuracy
Authors: Biswas Amit , Chaubey Neha N. , Chaubey Nirbhay Kumar
Published: April 2023

Legged robots are a class of biologically inspired robots that use articulated leg mechanisms for locomotion. Legged motion is very complex and requires specialized actuation mechanisms and complicated motion control systems to operate. Traditional legged robots were controlled by purely physics-based, however, recent developments of artificial intelligence (AI), and machine learning (ML) techniques have opened new opportunities to train locomotion skills in a legged robot in a much more efficient way than the traditional physics-based controllers. In this chapter, the authors study how machine learning techniques are used to train quadruped robots in basic locomotion skills, evaluate training accuracy, training speed, and also discussed performance, simulation environment, trajectory control, and how the authors achieved accurate tracking of trajectories. Furthermore, this chapter delves into the details of the actual quadruped robot that the authors built to evaluate locomotion policies and some challenges that were faced in building the real robot.
Development of interspecific segregating populations of wheat and evaluation of agronomic characteristics and resistance to Fusarium head blight
Authors: Frizon Patricia , Brammer Sandra Patussi , Deuner Carolina Cardoso , Chechi Amanda , Lima Maria Imaculada Pontes Moreira , Castro Ricardo  Lima de
Published: April 2023

The objective of this study was to develop segregating wheat populations for resistance to gibberella through the introgression of synthetic wheat genes in traditional cultivars and to present the results using the backcross method. In addition, to evaluate these populations in F1RC2, agronomic aspects and type II and III resistance to Fusarium head blight (FHB). The cultivars BRS Guamirim and BRS 179 were used as male parents and three synthetic wheat cultivars (CIGM90.909, CIGM92.1666, and CIGM93.298) as female parents, both previously characterized for the reaction to FHB. Crossing and backcrossing methodological procedures were performed to provide adequate controlled conditions. The F1 (winter 2016), RC1 (summer 2016/2017), and RC2 (winter 2017) populations were developed through emasculation and pollination procedures. In the winter of 2018, segregating populations were evaluated in the field using a randomized block design. In the three generations developed in a greenhouse, it was observed that the best crossbreeding combinations, verified by the number of grains, were obtained with the male parent BRS 179. Under field conditions, all segregating populations were considered moderately susceptible and susceptible to type II resistance. In type III resistance, all segregating populations, except for CIGM90.909/BRS 179 and BRS 179, showed values above 50%. Thus, it was evident that the crossings performed with the male parent BRS 179 generated better resistance to the disease.
Crop growth and macronutrient extraction and export curves for two arrowroot cultivars
Authors: Pereira Ednângelo , Puiatti Mario , Pereira Paulo Roberto Gomes , Cecon Paulo Roberto , Sedyama Maria Aparecida Nogueira , Ribeiro Fernanda Cristina Silva
Published: April 2023

Curves of crop growth and nutrient extraction and export are essential to develop fertilization strategies and management plans to maximize yield and reduce environmental impacts. Our study aimed to evaluate dry matter production and both extraction and export of macronutrients by arrowroots (Maranta arundinacea L.) to be used in further crop fertilization plans. To this purpose, two experiments were carried out in field conditions using the varieties Viçosa and Seta. The experimental design was randomized with four replications and nine periods of analysis, which were defined as days after planting (105, 135, 165, 195, 225, 255, 285, 315, and 345 DAP). Dry matter, extraction, and export of macronutrients by arrowroot seed-rhizomes, aerial parts, roots, and storage roots (rhizomes) were determined. The exports of N, P, K, Ca, Mg, and S of storage rhizomes of the variety Viçosa were 104.6, 51.83, 412.24, 15.85, 36.14, and 64.36 kg ha-1, while those of the seta variety were 160.6, 71.62, 521.31, 17.57, 60.09, and 160.41 kg ha-1, respectively. Both varieties proved to be efficient soil macronutrient extractors, mainly for K. The variety Seta had higher shoot, root, seed-rhizome dry matter contents, as well as greater macronutrient extractions and exports.
Proposed diagrammatic scale to assess heat injury in coffee seedling canopy
Authors: Resende Laís Sousa , Pozza Edson Ampélio , Pereira Renata Cristina Martins , Botrel Élberis Pereira , Roteli Karolaine de Cássia , Oliveira Júlia Marques
Published: April 2023

A diagrammatic scale with five levels (0, 0.1 – 2.0, 2.0 – 6.0, 6.0 – 10, and 10 – 14) was developed and evaluated to measure the symptoms of heat injury in a coffee seedling canopy. The scale was constructed to increase assessment efficiency and align the estimations more closely with the actual values. Two assessments with the diagrammatic scale and one without were conducted with an interval of seven days. The evaluators using the proposed scale presented estimates with better levels of precision, accuracy, reproducibility, and repeatability than those using a conventional method. The proposed diagrammatic scale was shown to provide a reliable estimate for assessing the symptoms of heat injury on the canopy of in Coffea arabica L. seedlings. Therefore, it is possible to standardize heat injury evaluation methods using this diagrammatic scale, allowing for data comparisons with different cultivars.
Steel Stress Joint Design and Fabrication Challenges with 3.5-Inch Mid Joint Fatigue Sensitive Weld for the Vito Oil Export Steel Catenary Riser
Authors: Mekha Basim B , Fazackerley William , Shirolikar Alok D , Preli Thomas A , LeRoy Ryan A
Published: April 2023

This paper describes the steps and the challenges encountered during the design and fabrication of the 100-foot long steel stress joint for the 14-inch Vito Oil Export Steel Catenary Riser (SCR) and how the project team was able to overcome them, leading to a successful completion and installation of the stress joint and the SCR by the S-lay method. The stress joint was made up of two sections with 3.5-inch upset (thickened) ends welded together, due to globally available forging size limitations. The stress joint had to be designed to accommodate the Vito semi-submersible platform motions and support the load of the riser. This steel stress joint may not be the longest, however, it could well be the largest and heaviest, having the thickest weld ever attempted on a fatigue critical area of an SCR. This stress joint, in particular the weld, had to satisfy the design fatigue requirements and meet a very stringent Engineering Critical Assessment (ECA) flaw acceptance criteria.

During the manufacturing of the steel sections, indications were found in the steel forgings and the design had to be adjusted to eliminate the sections with the indications and to save the forgings from being scrapped and preserve project schedule. The manufacturing and fabrication of the steel joint was challenging from a materials point of view as well as due to the size of the segments which necessitated the joining of two separate forgings, limited by both length and weight. In addition, the qualification and welding of the 3.5-inch upset (thickened) ends of the two stress joint pieces presented significant risk for the project as it has never been done before and this weld represented one of the most fatigue critical locations in the SCR. This weld also had to meet very stringent flaw acceptance criteria to meet the weld ECA requirements and had to be produced without the ability of being repaired. The unique challenges in developing the welding and the Non-Destructive Examination (NDE) procedure and the welding qualification process for the 3.5-inch thick weld are also discussed in this paper.
Introducing a Novel Shaped Steel Catenary Riser for Deepwater Applications
Authors: Sebastian Abhilash A , Lal Mayank , Rana Yash K
Published: April 2023

Use of steel catenary and lazy wave risers has increased as oil and gas developments are happening in deeper waters or in parts of the world with no pipeline infrastructure utilizing Floating Production Storage and Offloading (FPSO) vessels as a host platform. A suitable Catenary form is selected based on the hang-off angle of the riser. Lazy-Wave form of the catenary riser is achieved by targeted placement of a custom configured buoyancy section. This includes the length to start of the buoyancy section, length of the buoyancy section, hang-off angle, and the buoyancy factor. The strength and fatigue performance of steel catenary and lazy wave risers are governed by its configuration parameters. Achieving these key performance drivers for an SCR or SLWR takes several rigorous analyses iterations throughout the design process. However, on many occasions a modified and optimized Shaped Steel Catenary Riser (SSCR) is necessary to satisfy the project technical, operational, and economic requirements. In certain instances, there is simply no solution achievable using a monolithic steel catenary or lazy wave riser. These include instances where an SCR may be technically feasible, however the top tension is too high or an SLWR simply doesn't have adequate operational fatigue. A shaped Steel-Titanium Riser (STIM Riser) allows to decouple the vessel motions sufficiently and reduces the hang-off tensions. The concept also provides good long-term and short-term fatigue due to environmental factors including wave and currents and operational factors such as slugging.

In this paper a novel hybrid shaped riser is introduced. This riser system takes advantage of the modified catenary riser to achieve an optimized shaped SCR and combines it with the superior fatigue performance of Titanium. Titanium is abundant in the nature but currently difficult and expensive to extract at large scale. The industrial solution to produce Titanium at a greater scale is expected to improve in the near future. In that scenario, a riser system with Titanium applied to several critical areas will provide an attractive solution. This customized solution provides an attractive cost optimized configuration that meets all requirements.
Standardization of Subsea Distribution Units
Authors: Martinelli Giordano , Lavarra Giacomina Maria Grazia , Rella Carlo , Fabbrizzi Michelangelo , Biffaroni Giovanni
Published: April 2023

There has never been a more challenging time for the energy industry. In the subsea sector, the search for optimised costs, minimized carbon emissions, and maximized performance is set to intensify as oil prices continue their unpredictable trajectory.

At the same time, the risks to equipment, to people, to the local terrain and seascape will remain. What the industry needs in the face of all this is cost certainty and reduced CO2 output, derived not just from technical certainty but also execution certainty.

As part of the goal to achieve carbon net zero status, every single aspect of subsea operations is an opportunity to drive improvement. Through the work undertaken as described in this paper to drive standardization across the industry around the world, it can be shown that even equipment like Subsea Distribution Unit (SDU) – that come with some entrenched design and operational philosophies behind them – can deliver substantial improvements to the areas that matter most such as reduction of carbon footprint.

Data from past projects and from the market have been collected to map the main configurations delivered across the years for different Clients in order to assure that the SDU structured is a flexible product that can be configured easly to cover all possible requests: the brick has been introduced as main component of the SDU. The design of standard bricks improves production availability, reduce production time as result of reducing on-site welds. Not a secondary aspect is that the standardization of the design translates in a standardization of the manufacturing and execution phases, which means a reduction of lead time (up to 6 months) with an improved availability of the product. In addition to the above, a reduction in the weight of ~20% it has been obtained: this with the possibility to use smaller vessel contribute massively to the reducyion of the CO2 emission.
Numerical Analysis of a Wave Energy Converter
Authors: Bauer Peter , Dillon-Gibbons Craig , Iyer Narayan , Kilner Andrew , Easson Adrian , Gumley Jon , Thurumella Hemant
Published: April 2023

Wave Energy Converters (WEC) are devices that convert the kinetic energy of the waves into useful electrical energy. There are multiple types of WEC devices that have been developed over the years. These devices act as a source of clean energy and can be used to generate electricity. This paper provides a numerical assessment of a WEC device comprising of a moored buoy with a Power Take-Off (PTO) system driven by line tension.

This WEC system was developed by Laminar Scientific. AMOG was contracted by Testing and Expertise for Marine Energy (TEAMER) to provide a numerical assessment of this WEC device under metocean conditions present at the PacWave site.

The WEC system was modeled using the hydrodynamic package OrcaFlex, over a range of regular and irregular sea-states of varying wave height and period. Four optimization steps were made to the model, altering parameters of the original model such as size and geometry.

The simulations indicated that the WEC device power output is highest for large surge and heave motions of the buoy. The simulations also predicted that increasing the surge and heave motions lead to a critical point beyond which the PTO system was no longer able to respond rapidly enough to maintain minimum tension in the mooring lines. Beyond this point snatch loads were predicted to occur potentially exceeding the Minimum Breaking Load (MBL) of the lines and accompanied by unstable rotational motions of the buoy. Increasing the size of the buoy was predicted to prevent these snatch loads and associated unstable rotational motions of the buoy from occurring in the range of sea states investigated. The parameters which were predicted to have the most impact on the system performance were the buoy size (mass, moments of inertia, and volume) and the rotational inertia of the PTO system. Increasing the buoy size and decreasing the PTO rotational inertia was predicted to improve the power generation capabilities of the device.
Hybrid Power Sources in ROVs - Turbocharging Electric ROVs with Technology from the Electric Vehicle Industry
Authors: Schubert Peter Bertan
Published: April 2023

As Remotely Operated Vehicle (ROV) technology matures, it will benefit by borrowing new components and techniques from related industries to improve performance and reduce costs. A particularly important area to draw from is the electric vehicle industry. ROVs are typically powered and controlled from a cable called a "tether" and the maximum power which can be provided to the vehicle is a function of the tether size and the required length. What if the ROV had a "turbo" mode, much like a hybrid gas/electric vehicle using a small amount of energy storage and an electric motor to provide short bursts of additional power? A prototype "hybrid" energy storage system is used to demonstrate how peak power available to the ROV can be increased or the size of the tether can be reduced. The prototype is based on a component commonly used in electric vehicles called a supercapacitor. Data from test dives shows the vehicle typically reaches peak power for only 5 seconds. Anytime the power demand of the vehicle is below the maximum available from a traditional power supply, energy could be stored in the supercapacitors for later use, allowing greater power output when required. The data is also used to estimate tether savings/performance gains using this technique. Thanks to great strides in electric vehicle technology, ROV capability and efficiency will improve significantly. In much the same way adding even a small electric motor and batteries or supercapacitors to a typical gasoline powered car results in a "hybrid" vehicle with either the same performance at greater fuel economy or increased performance at the same milage, ROV operators will benefit from a combination of reduced costs/carbon emissions or increased power.
On the Use of DAS, DTS and DTGS for the Detection and the Monitoring of Leaks in Wells
Authors: Cherubini Aurelien , Almoric Etienne
Published: April 2023

Distributed Acoustic Sensing (DAS) and Distributed Temperature Sensing (DTS) measurements are technologies which are adding some benefits in the aim to replace or complete traditional logging measurements like noise logging tools (NLT) or production logging tools (PLT). The aim of well integrity interventions using distributed fiber optic sensing (DFOS) is to significantly reduce the duration and the cost of these operations, and to provide additional information in comparison to traditional logging tool. The combination of DAS and DTS can offer both qualitative and quantitative information regarding fluid dynamics in the context of well integrity investigation, as the flow characteristics (intensity of turbulences).

In addition to acoustic (high frequency DAS) and temperature (DTS) monitoring for leak detection, we propose to use DTGS (Distributed Temperature Gradient Sensing) with low frequency DAS (< 1 Hz) to monitor leaks on the completion tubing of a well. The main advantage of using DTGS with DAS is its sensitivity to small leaks, including the direction of propagation of the leak.
Electrical Protection From Design to Commissioning for Subsea Electrically Heat Traced Flowline Pipe in Pipe System, The Challenge of Inaccessible Subsea Electrical Assets.
Authors: Minier Yves , Silcock Donald Maclaren
Published: April 2023

This paper will describe the analysis, optimisation and subsequent implementation of an electrical protection system utilised on a subsea Electrically Heat-Traced Flowline system (EHTF) using conventional topsides power protection equipment deployed in a novel topology.

It will also discuss the project-imposed challenge of protecting an electrical subsea system of significant length from only a single feeder protection whilst keeping it simple, sensitive, rapid, and covering 100% of the long heating cable length.

The paper will describe the detailed electrical analysis methods deployed, the additional electrical verification carried out and the decision-making processes and drivers choice used during an electrical system design optimisation challenge that was conducted in a short timeframe and planned around operational assets.

The close collaboration between contractor, client, vendors and third-party expertise was fundamental to solve successfully the challenges and mitigate the overall risks.

Key engineering processes described: Subsea Umbilical Riser and Flowline (SURF)/Topside interface management / interface meetings, design review process, use of interim design reviews, the decision scoring matrix, the go/no go risk assessments, pre-commissioning, commissioning, performance test.

The benefits and drawbacks of the different electrical topologies investigated will be reported, specifically the retention of an isolated neutral system.

The paper will provide the final chosen protection topology and the results of the individual component testing.

A key observation to report being that when technology is new, the need to validate the implementation of it must be included in the initial design. There must be added monitoring even if it’s not thought to be essential at start of a project, even if it’s considered as "sugar coating" a design or adding complexity, there can be huge benefits on new technology deployment.

The paper will report on the observed benefits of site integration testing versus individual routine / factory acceptance testing when deploying TRL7 items in novel topologies.

The final commissioning results will be reported and an engineer’s view of a journey from concept to final commissioning will be presented.

Existing literature is limited on electrical topology on subsea infrastructures and thus this paper enhances the industry knowledge base. The paper describes a novel topside protection system for subsea ground isolated loads.

As the subsea industry turns towards electrification, it is essential that lessons are learned. This ensures novel solutions can be deployed provided a correct design verification process.

The paper could trigger discussions around a new best practice recommendation about the interface topsides/subsea electrical infrastructures.