bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of IEC Normal Turbulence Model and Modelling of the Wind Turbulence Intensity for Small Wind Turbine Design in Tropical Area: Case of the Coastal Region of Benin
Authors: Donnou Hagninou Elagnon Venance , Akpo Aristide Barthélémy , Houngue Guy Hervé , Kounouhewa Basile Bruno 
Published: May 2020

The wind turbulence intensity observed on a site have an influence the wind turbine energy production and the lifetime of the blades. It is therefore primordial to master this parameter for the optimization of the production. So therefore, this study is interested on the modelling of the wind turbulence intensity at 10 m above the ground on the coast of Benin. Four years of wind data measured on the site of Cotonou Port Authority (PAC) from 2011 to 2014 and recorded with a temporal resolution of 10 min were used. From the transport equation of turbulent kinetic energy followed by a numerical simulation based on the Nelder-Mead algorithm developed under the Matlab software, we proposed five new models for estimating the wind turbulence intensity. The results of the different simulations reveal that four of proposed models and based on the roughness, the speed of friction and the length of Obukhov better fit the data, during the periods of January, April, June, July, August, September and December. The estimators of the Root Mean Square Error (RMSE) and the Mean Absolute Error (MAE) vary from (0.02; 0.01) in December to (0.09; 0.07) in August. As for the model which is a function of roughness and the wind shear coefficient (expressed only according to the wind speed), it gives better performance whatever the time of the year and the atmosphere stability conditions. The estimations errors are included between (0.02; 0.01) obtained in December and (0.08; 0.06) observed in March. A comparative study between the existing models in the literature and the best model proposed in this study showed that only this model gives the best adjustment with the data. It can therefore be used on the sites where turbulence is influenced by the roughness and the atmosphere stability. Finally, from this model a new wind turbine design class has been proposed for the site of Cotonou. It takes into account the actual levels of turbulence observed and thus allow to optimize the energy production.
Characterization of Microstructure and Fracture Performance of Boronized H11 Grade Hot-Work Tool Steel
Authors: Jurči Peter , Hudáková Mária 
Published: May 2020

Abstract
H11 grade hot-work tool steel was subjected to powder boronizing at 1,030°C for different processing times. Subsequently, the steel was austenitized, quenched, and tempered to a bulk hardness of 47–48 HRC. The microstructure, phase constitution, and hardness of boronized layers were examined using scanning electron microscopy and microanalysis, glow discharge optical emission spectroscopy, X-ray diffraction, and microhardness measurements. The effect of the boronized region on the material fracture performance was examined using the Charpy impact test, according to the corresponding standard NADCA 202-97, Recommended Procedures for H13 Tool Steel. It was determined that the growth of the boronized layer begins with a boron enriched α-phase. Then, the (Fe,Cr)2B boride was developed, and in the case of longer processing time, the (Fe,Cr)B boride was grown. During boronizing, carbon atoms were transported from the surface toward the bulk, forming extra carbides beneath the compound regions. Their amount increased with increasing boronizing duration, which was reflected in the enhanced hardness of the intermediate region beneath the compound boronized layer. The microhardness of (Fe,Cr)2B boride layers was around 1,600 HV 0.1, and the microhardness values of (Fe,Cr)B considerably exceeded 2,000 HV 0.1. However, boronizing led to a substantial reduction of the Charpy impact toughness of the material, and this reduction was more pronounced when a thicker compound layer was formed on the steel surface. The reduction in toughness was clearly reflected on the fractured surfaces as they manifested clear cleavage fracture propagation.
Pemanfaatan Karbon Aktif Sekam Padi sebagai Adsorben Phenantrena dalam Solid Phase Extraction
Authors: Rinawati Rinawati , Kiswandono Agung Abadi , Juliasih Ni Luh Gede Ratna , Permana Ferdian Dicky 
Published: May 2020

Teknik ekstraksi fase padat (solid phase extraction, SPE) telah banyak menggantikan ekstraksi cair-cair karena sifatnya yang lebih ramah lingkungan dengan menggunakan volume pelarut lebih sedikit, waktu yang cepat dan proses yang mudah. Namun demikian, selama ini adsorben yang umum digunakan pada SPE adalah silika atau polimer dari bahan kimia yang memerlukan teknologi tinggi sehingga harga SPE di pasaran relatif masih mahal untuk digunakan di laboratorium yang ada di Indonesia. Oleh karena itu dalam penelitian ini dipelajari pemanfaatan karbon aktif sekam padi untuk penentuan salah satu senyawa polisiklik aromatik hidrokarbon (PAH), yaitu fenantrena. Limbah sekam padi diketahui dapat dimanfaatkan menjadi karbon aktif sebagai alternatif adsorben unggulan dari limbah pertanian yang terbarukan, murah dan melimpah di Indonesia termasuk di Lampung. Faktor yang mempengaruhi ekstraksi SPE seperti waktu ekstraksi, massa adsorben, konsentrasi adsorbat dan pH akan dievaluasi. Uji kinerja metode SPE untuk penentuan PAH akan ditentukan berdasarkan parameter akurasi, presisi dan linearitas. Hasil penelitian menunjukkan kondisi optimum untuk waktu ekstraksi adalah 60 menit, massa konsentrasi adsorbat 10 ppm, massa adsorben 25 mg pada pH 3. Hasil uji kinerja analitik menggunakan parameter akurasi, presisi, dan linearitas telah memenuhi syarat keberterimaan yang menunjukkan bahwa metode SPE sebagai preparasi sampel untuk menentukan fenantrena di perairan dapat digunakan.
Pesan Dakwah dalam Sinetron Catatan Harian Aisyah di RCTI
Authors: Fitiyani Nur , Fitriyani Nur , Saepuloh Uwoh 
Published: May 2020

Dakwah merupakan suatu kegiatan yang dapat di lakukan di mana saja, termasuk menggunakan sinetron yang didalamnya terdapat berbagai macam pesan dakwah salah satunya sinetron Catatan Harian Aisyah.Oleh karena itu dalam penelitian ini penulis menggambil tiga pemasalahan yaitu Bagaimana stuktur makro, superstuktur, dan stuktur mikro pada sinetron Catatan Harian Aisyah pada episode 8 januari 2018. Dalam penelitian ini penulis menggunakan pendekatan kualitatif dengan metode penelitian analisis wacana yang dikembangkan oleh Teun A. Van Dijk dalam sinetron Catatan Harian Aisyah pada tanggal 8 Januari 2018 Hasil yang didapatkan dalam penelitian ini adalah penulis banyak menemukan pesan dakwah dalam sinetron Catatan Harian Aisyah pada tanggal 8 Januari 2018, terutama yang berkenaan dengan sabar, dan ikhlasan dalam menjalankan segala cobaan yang dialami serta pesan dakwah mengenai ketaatan akan perintah Allah yang tidak peduli orang lain ingin berkata apa, tetapi ia tetap berpengan teguh kepada keyakinannya dalam menjalankan segala perintah Allah. Dalam penelitian ini banyak ditemukan berbagai kalimat koherensi, gaya bahasa, kata ganti yang mana memperjelas pesan apa yang ingin disampaikan dalam sinetron Catatan Harian Aisyah.
Kata kunci;Pesan Dakwah; Sinetron ; Analisis Wacana Teun A. Van Dijk
Da'wah is an activity that can be done anywhere, including using soap operas in which there are various kinds of da'wah messages, one of which is Aisyah's Daily Record soap opera.Therefore, in this study the authors took three problems, namely how to structure macro, structure, and micro structure in Aisyah Daily Record soap opera on episode 8 January 2018. in this study the author uses a qualitative approach to discourse analysis research method developed by Teun A. Van Checked in Aisyah's Daily Record soap opera on January 8, 2018 The results obtained in this study are that many writers found the message of da'wah of Aisyah's Diary on January 8, 2018, especially those who are patient, and sincere in carrying out all the trials and messages of da'wah concerning obedience to God's commands that do not care what other people want to say, but he still steadfastly adheres to his faith in carrying out all the commandments of God. In this research, there are many sentences of coherence, language style, pronouns which clarify the message what you want to convey in Aisyah's Daily Record soap opera.
Keywords; Message of Da'wah; Soap operas; DiscourseAnalysis of Teun A. Van Dijk.
Pergumulan Dakwah di Mentaya Sampit
Authors: Alkhusaeri Yusuf , Machendrawaty Nanih , Aripudin Acep 
Published: May 2020

Tujuan dalam penelitian ini antara lain : Pertama, memahami aspek – aspek dakwah dalam pelaksanaan Ritual Mandi Safar. Kedua mengetahui dan menganalisis suatu elemen – elemen yang memicu pro dan kontra di dalam pelaksanaan Ritual Mandi Safar. Metode penelitian yang digunakan adalah metode kualitatif, sumber data pada penelitian ini adalah sumber data primer, yaitu pelaku dan pihak – pihak yang mengetahui sejarah Ritual Mandi Safar. Adapun teknik pengumpulan data yang digunakan dalam penyusunan peneliti ini adalah teknik observasi, wawancara, serta dokumentasi. Berdasarkan hasil penelitian dapat disimpulkan bawa Mandi Safar merupakan Ritual yang bernuansa agama, namun pada dasarnya tradisi tersebut bukanlah bagian dari agama. Dalam Ritual Mandi Safar yang perlu dikedepankan adalah sapek “tradisi dan budaya” bukan aspek Ritual keagamaannya, karena akan timbul pemahaman syirik pada masyarakat. Aspek – aspek dakwah yang terkandung di dalam mandi safar yaitu, aspek sosial yaitu, kebersamaan dan kesetiakawanan dan aspek aqidah yaitu, kepercayaan dan keyakinan yang dapat menyelaraskan dengan timbulnya prilaku yang mementingkan kepentingan bersama atau nilai solidaritas dalam tindakan masyarakat.
The objectives in this study include: First, understand of da'wah in the implementation of the Ritual of Mandi Safar. The two know and analyze an element that triggers pro and contra in the implementation of the Ritual of Mandi Safar. The research method used is a qualitative method, Data sources in this study are primary data sources, namely the perpetrators and partys who know the history of the Ritual of Mandi Safar. The data collection techniques used in the preparation of this researcher are observation, interview, and documentation techniques. Based on the results of the study it can be concluded that Safar Bath is a Ritual that has a religious nuance, but basically the tradition is not part of religion. In the Ritual of Mandi Safar, which needs to be put forward, the sapek "tradition and culture" is not an aspect of its religious Ritual, because will arises comprehension syirik on society . Aspects of da'wah contained in safar baths are, social aspects namely, togetherness and solidarity and aspects of aqedah namely, trust and confidence that can harmonize with the emergence of behavior that conserned interest shared or the value of solidarity in community actions.
Emerging Therapeutic Implications of STK11 Mutation: Case Series
Authors: Laderian Bahar , Mundi Prabhjot , Fojo Tito , E. Bates Susan 
Published: May 2020

Abstract

STK11 was first recognized as a tumor suppressor gene in the late 1990s based on linkage analysis of patients with Peutz-Jeghers syndrome. STK11 encodes LKB1, an intracellular serine-threonine kinase involved in cellular metabolism, cell polarization, regulation of apoptosis, and DNA damage response. Recurrent somatic loss-of-function mutations occur in multiple cancer types, most notably in 13% of lung adenocarcinomas. Recent reports indicate that KRAS-mutant non-small cell lung cancers harboring co-mutations in STK11 do not respond to PD-1 axis inhibitors. We present three patients with STK11-mutated tumors and discuss the proposed mechanisms by which germline and somatic alterations in STK11 promote carcinogenesis, potential approaches for therapeutic targeting, and the new data on resistance to immune checkpoint inhibitors.

Key Points
STK11 is a tumor suppressor gene, and loss-of-function mutations are oncogenic, due at least in part to loss of AMPK regulation of mTOR and HIF-1-α. Clinical trials are under way, offering hope to patients whose STK11-mutated tumors are refractory and/or have progressed on chemotherapeutic regimens. Whether gastrointestinal cancers with STK11 loss of function will show the same outcome and potential refractoriness to immune therapy that were reported for lung cancer is unknown. However, physicians managing such patients should consider the experience in lung cancer, particularly outside the context of a clinical trial. In the CheckMate-057 trial lung tumors harboring co-mutations in KRAS and STK11 had an inferior response to PD-1 axis inhibitors. Coupled with the observation that STK11-mutated tumors were found to have a cold immune microenvironment regardless of KRAS status, the conclusion could extend to KRAS wild-type tumors with STK11 mutation. Current data suggest that the use of PD-1 axis inhibitors may be ill advised in the presence of STK11 mutation.
WHICH IS THE MOST APPROPRIATE LEARNING MODEL TO IMPROVE STUDENTS’ ENTREPRENEURIAL INTEREST? A COMPARISON OF TWO KINDS OF ACTION RESEARCH
Authors: Sari Melati Inaya , Jenudin Ahmad 
Published: May 2020

Purpose of the study: This study introduced a new learning model called GEPPRAK (Grup: Group, Eksplorasi: Exploration, Pengembangan Ide: Idea Development, Penyusunan dan PresentasiRencana Usaha: Preparation and Presentation of the Business Plan, Aksi dan Kompetisi: Action and Competition)and compared higher education students' interest change in entrepreneurship through the application of the GEPPRAK learning model and the Problem Based Learning (PBL) learning model.
Methodology: This research was quantitative research with an experimental research design. The design in this study was the true experimental design using pre-test and post-test control group design. Data collection used documentation, observation, and questionnaire. Data analysis techniques in this study used an independent sample t-test using IBM SPSS 22.
Main Findings: The results showed that entrepreneurship learning using the GEPPRAK learning model proved to be able to improve entrepreneurial interest better than the Problem Based Learning (PBL) model in the experimental class in this study.
Applications of this study: The results of this study can be used by teachers and lecturers as a reference for the selection of entrepreneurship learning models in schools and universities.
Novelty/Originality of this study: The GEPPRAK learning model is a new learning model developed in Indonesia so that it still needs to be tested for its effectiveness in improving students’ entrepreneurial interest.
Generalization Driven Fuzzy Classification Rules Extraction using OLAM Data Cubes
Authors: Bhukya Raghuram 
Published: May 2020

An fuzzy classification rules extraction model for online analytical mining (OLAM) was explained in this article. The efficient integration of the concept of data warehousing, online analytical processing (OLAP) and data mining systems converges to OLAM results in an efficient decision support system. Even after associative classification proved as most efficient classification technique there is a lack of associative classification proposals in field of OLAM. While most of existing data cube models claims their superiority over other the fuzzy multidimensional data cubes proved to be more intuitive in user perspective and effectively manage data imprecision. Considering these factors, in this paper we propose an associative classification model which can perform classification over fuzzy data cubes. Our method aimed to improve accuracy and intuitive ness of classification model using fuzzy concepts and hierarchical relations. We also proposed a generalization-based criterion for ranking associative classification rules to improve classifier accuracy. The model accuracy tested on UCI standard database.
Characteristics of Phosphorus Adsorption and Release in Different Types of Sediments
Authors: Yang Pengqiang , Huanghe  , Gao Rujun 
Published: May 2020

Taking different types of sediments as the research object, this research studied the adsorption and release characteristics of phosphorus under different conditions of different temperatures, coexisting heavy metal ion system, organic matter content and sediment particle size. Through used correlation analysis and principal component analysis, it discussed the influence of various factors on the adsorption and release of phosphorus in sediments. The results show that the adsorption of phosphorus by five different types of sediments from different sources reached saturation equilibrium in about 10 hours, and the increasing rates of 0 ℃, 15 ℃ and 30 ℃ are 17.5% ~ 23.7% and 18.2% ~ 38.3%, respectively. The addition of coexisting heavy metal ion solution accelerated the adsorption of phosphorus in the sediment and reduced the total amount of phosphorus adsorption, that is, heavy metal ions inhibited the adsorption of phosphorus in the sediment; the presence of organic matter in the sediment would reduce its adsorption of phosphorus , Taihu farm and wetland sampling points have the largest sediment organic matter content. Compared with the other three points, the adsorption of phosphorus of these two points accounted for 20.6% and 22.1%; the adsorption and release of phosphorus by sediment increased with the decrease of particle size. The maximum release rate was 5.216mg/kg-1·h-1. The result of principal component analysis shows that the order of influence on the adsorption and release of phosphorus by sediments is temperature> disturbance> organic matter content> heavy metal ion influence> particle size of sediments.
Occupational Stress among Librarian and Library Staff in Universitas Airlangga Indonesia
Authors: Damayanti Ratih , Noviarmi Fadilatus Sukma Ika , Nawawinetu Erwin Dyah , Irfana Maisyatus Suadaa 
Published: May 2020

Introduction: As the other worker, librarian could be got occupational stress because of their duties. However, the duties of librarians and library staff seem trivial and monotonous to the general public. Precisely because it looks trivial and monotonous, research needs to be done related to work stress experienced by librarians and library staff. Aim of this study were to assessed the work stress experienced by librarians and library staff also analyze work stress related factors among librarians and library staff. Methods: In this observational analytic research that has cross sectional designed, occupational stress level was measured by HSE questionnaire and role conflict, carrier development and responsibility to person in organization were calculated by questionnaire in Manpower Minister Decree number 5 2018. Results: Most of the librarian and library staff experienced moderate level of occupational stress. Analysis of chi-square results proved that role conflicts and carrier development significantly related to occupational stress that was experienced by librarian and library staff in Airlangga University. On the other hand, the other variables of socio-demographic and responsibility to person in organization have no significant relationship. Conclusion: Almost all levels of work stress on librarians and library staff are middle to high level with factors related to role conflict and career development.Keywords: Indonesia, librarian, occupational stress, university
Risk Management on Print Checking of Plastic Sacks Production in Sidoarjo Indonesia
Authors: Sari Rizqy Kartika , Wahyudiono Denny A. 
Published: May 2020

Introduction: Risk management is a management activity that aims to reduce risk to prevent negative impact. Calculation of the amount of risk was carried out to then determine whether the risk was acceptable. In printing activities, contact between humans and machines is unavoidable. The purpose of this study was to evaluate the risk of occupational safety management in the activity of print checking on stamping stage of plastic sacks production in Sidoarjo, Indonesia by conducting hazard identification, risk assessment which includes risk analysis and risk evaluation, control assessment, and residual risk assessment. This is an observational study with a cross sectional design. Methods: Data included primary and secondary data. Primary data were taken by interview and observation. Secondary data were taken from work accident data. Results: A total of 6 hazards were identified. Risk assessment recorded 2 low hazards category 2 medium hazards category, and 2 high risk hazards. Administrative control in the form of inspection and the use of PPE (Personal Protective Equipment) were implemented. Residual risk assessment shows that the implementation of controls was not optimal. The results of the residual risk assessment indicate that several risk categories fell into a lower category i.e 4 low hazards category and 2 high risk category hazards. Conclusion: The applied risk management has not been optimally implemented. It is recommended that the implementation of inspections is scheduled and a system for recording and reporting inspection findings is established. Keywords: hazard, printing checks, risk management
Determinant Factors of Work Stress Risk in Nurses at Rahman Rahim Sidoarjo Hospital
Authors: Khoiriah Irma Nur 
Published: May 2020

Introduction: Health sector such as hospitals had to pay attention to the company's hygiene aspects and all over occupational health. Nurses were one of the health worker that interact directly with patients and their families. Nurses were very risky to experience work stresses because they had complex tasks and very high responsibilities for the safety of human lives. The purpose of this study was determining factors of work stress in nurses at Rahman Rahim Sidoarjo Hospital. Methods: This research was a cross sectional research design. This study used the entire population of nurses at Rahman Rahim Sidoarjo Hospital, which consists of 60 people. The object of research was Rahman Rahim Sidoarjo Hospital. Research variables included the level of risk of work stress, sex, age, personality, working period social support and subjective workload. Results: The research study shows that most of the nurses at Rahman Rahim Sidoarjo Hospital have moderate stress risk levels of 44 out of 60 nurses (73.3%). A small number of nurses had a low level of stress risk of 11 nurses (18.3%), a high level of stress risk as many as 5 nurses (8.4%), and no nurses who had a high level of risk of work stress were found. Conclusion: Determinant factors of work stress risk that play an important role are factors of sex, personality and working period.Keywords: determinant factor, nurses, work stress