bluuebunny/crossref_metadata_2025 huggingface dataset:
Postur Tubuh dan Waktu Duduk dengan Keluhan Nyeri Punggung Bawah (LBP)
Authors: Kusumaningrum Dietha , Samara Diana , Widyatama Haryo Ganeca , Parwanto ML Edy , Rahmayanti Dina , Widyasyifa Salsabila Ayu
Published: May 2021

Pengantar: nyeri punggung bawah (LBP) merupakan keluhan yang sering timbul terkait dengan pekerjaan dan aktivitas yang dapat dialami oleh siapa saja. Tujuan; mengetahui hubungan antara postur tubuh dan waktu duduk dengan keluhan nyeri punggung bawah (LBP) pada mahasiswa. Metode: Sebuah studi observasional cross-sectional dilakukan dan total 198 mahasiswa kedokteran. Pengumpulan data menggunakan kuesioner, Hasil: menunjukkan adanya hubungan yang signifikan antara postur kepala saat duduk (p=0,024), indeks massa tubuh (p = 0,000), kebiasaan merokok (p= 0,003) dengan keluhan nyeri punggung bawah (LBP). Tidak ada hubungan antara postur tubuh dan sendi lutut saat duduk, lama duduk, jenis kelamin dan usia dengan keluhan nyeri punggung bawah (LBP). Kesimpulan: Ada hubungan yang signifikan antara postur kepala (bawah atau atas) saat duduk, indeks massa tubuh (IMT), dan kebiasaan merokok dengan keluhan nyeri punggung bawah (LBP).
Studi Analisis Zat Gizi Biskuit Fungsional Subtitusi Tepung Kelor dan Tepung Ikan Gabus
Authors: Setyawati Evi , Nurasmi Nurasmi , Irnawati Irnawati
Published: May 2021

Pengantar; salah satu bahan local di Kabupaten Sigi adalah Kelor (Moringa oleifera) dan Ikan Gabus (Channa striata). Tujuan; menghasilkan produk biskuit PMT-P dengan subtitusi tepung kelor dan tepung ikan gabus dan menganalisis kandungan gizinya. Metode; Jenis penelitian yang digunakan yaitu eksperimental murni dengan 5 formula perlakuan 0%, 20%, 40%, 60%, dan 80%. Analisis data dengan Uji Kruskal-Wallis. Uji sifat fisik menggunakan uji organoleptic meode hedonic dan uji kadar proksimat. Hasil; bahwa formula memiliki warna hijau kecoklatan, sedikit beraroma daun kelor dan ikan gabus, rasa manis dan tekstur renyah. Kadar Air 0,6929%, Kadar Abu 1,862%, Protein 26,69 %, Karbohidrat 18,5 mg/100g, Lemak 31,422%. Vitamin A 10,22 µg/100 gr, Vitamin C 3.128,8 mg/100gr, Zat Besi 2,108 mg/100gr, Kalsium 7,403 mg/100gr, Fosfor 151,331 mg/100gr, Zink 9,5 mg/100gr, Natrium 361.339 mg/100gr. Kesimpulan; produk biskuit fungsional berbahan dasar tepung kelor dan tepung ikan gabus telah memenuhi persyaratan standar SNI dan pemberian makanan tambahan (PMT) pada ibu hamil
The Efektivitas Perilaku Cerdik dan Patuh untuk Mencegah Stroke Berulang
Authors: Ekawati Fransiska Anita , Carolina Yunita , Sampe Sr. Anita , Ganut SJMJ, Felisima
Published: May 2021

Pengantar; dampak stroke berulang lebih berat karena meningkatkan mortalitas dan kecacatan yang menambah beban ekonomi, menurunkan kualitas hidup pasien pasca stroke. Tujuan; mengetahui efektivitas pemberian penyuluhan kesehatan tentang pola hidup CERDIK dan PATUH dalam mencegah stroke berulang. Metode; Jenis penelitian ini adalah quasi eksperimen pre dan post-test without control. Uji menggunakan Wilcoxon.  Hasil; menunjukkan ada pengaruh pendidikan terhadap perilaku penderita stroke dalam mencegah serangan stroke berulang dan adanya pengaruh pendidikan terhadap pencegahan risiko stroke berulang. Kesimpulan; Ada pengaruh pemberian edukasi pola hidup sehat CERDIK dan PATUH modifikasi cegah stroke berulang terhadap perilaku penderita stroke serta terhadap risiko kejadian stroke berulang
Faktor yang Berhubungan dengan Kepatuhan Pengobatan Diabetes Mellitus
Authors: Syahid Zaenab M
Published: May 2021

Pendahuluan; tanpa disadari, penyakit diabetes melitus banyak menimpa masyarakat Indonesia. Tujuan; mengetahui berbagai faktor yang berhubungan dengan kepatuhan pengobatan diabetes melitus. Metode: data diperoleh dari database elektronik dengan menggunakan google scholar dengan menggunakan kata kunci “diabetes mellitus, faktor, kepatuhan pengobatan”. Studi pustaka ini dilakukan dengan cara menganalisis artikel ilmiah berbahasa Indonesia terbitan 2015 hingga 2020, kemudian setelah dilakukan pemilihan jurnal diperoleh 6 artikel kualitatif yang sesuai dengan kriteria inklusi. Hasil; menemukan bahwa banyak faktor yang berhubungan dengan kepatuhan terhadap pengobatan diabetes melitus yaitu faktor usia, pengetahuan, motivasi, sosial (dukungan keluarga dan tenaga kesehatan), pendidikan, ekonomi, akses dan psikologis. Tenaga kesehatan dan tenaga kesehatan harus mengetahui faktor-faktor yang berhubungan dengan kepatuhan pengobatan diabetes melitus sehingga komplikasi dapat dicegah dan ditangani dengan tepat. Kesimpulan; menjadi dasar bagi petugas kesehatan dan pengambil kebijakan dalam merencanakan kiat-kiat pencegahan dan pengendalian diabetes melitus
Pengaruh Edukasi Kesehatan Terhadap Kecemasan Lansia Tentang Penularan Corona Virus Disease (Covid 19)
Authors: Syamson Meriem Meisyaroh , Fattah Abd Hayat , Nurdin Sulkifli
Published: May 2021

Pendahuluan; faktor usia dan kurangnya pengetahuan dapat menjadi penyebab kecemasan dan kekhawatiran, ketakutan berlebihan yang mengganggu dan menurunkan imunitas tubuh manusia sehingga sangat rentan terpapar atau terkena COVID-19. Tujuan; mengetahui Pengaruh pendidikan kesehatan terhadap kecemasan lansia tentang penularan penyakit virus corona (covid 19). Metode; menggunakan desain penelitian quasy eksperimental yaitu one group pretest - posttest, yaitu untuk mengetahui pengaruh kecemasan lansia terhadap penularan Penyakit Virus Corona (COVID 19) sebelum dan sesudah penyuluhan. Hasil; bahwa ada perbedaan yang signifikan antara kecemasan tentang penularan Covid-19 sebelum dan setelah diberikan edukasi dan ada pengaruh pendidikan kesehatan terhadap kecemasan keluarga p (0,013). Kesimpulan; bahwa ada perbedaan signifikan dari frekuensi kecemasan tentang COVID-19 sebelum dilakukan intervensi dan sesudah dilakukan intervensi edukasi kesehatan
Hubungan Stres dengan Motivasi Belajar Mahasiswa disaat Pandemi Covid-19
Authors: Savira Laras Ayu , Setiawati Octa Reni , Husna Ismalia , Pramesti Woro
Published: May 2021

Pendahuluan; Organisasi Kesehatan Dunia mengungkapkan pada 30 Januari 2020 bahwa virus corona menjadi Public Health Emergency of International Concern (PHEIC). Tujuan; mengetahui hubungan stres dengan motivasi belajar. Metodologi; jenis kuantitatif dengan desain analitik dan pendekatan cross sectional. Instrumen pengukuran yang digunakan adalah angket DASS 42 (Depression Anxiety Stress Scales 42), angket motivasi belajar. Hasil; menunjukkan bahwa sebaran variabel stres tertinggi dengan tingkat stres sedang (43,3%) dan variabel motivasi belajar tertinggi dengan tingkat motivasi belajar sedang (48,3%) dan untuk Hasil analisis korelasi terhadap motivasi belajar. variabel dengan stres diperoleh P = 0,000 dan hasil koefisien korelasi r = -0,511. Kesimpulan; bahwa ada hubungan antara stres dengan motivasi belajar
Pengaruh Perendaman Air Perasan Jeruk Lemon dan Asam Cikala Terhadap Kekasaran Permukaan Resin Komposit Nanofiller
Authors: Sirait Rut Viodetta , Susanto Chandra , Tanjung Dian Soraya
Published: May 2021

Pendahuluan; permukaan halus resin komposit nanofiller dapat menjadi kasar seiring konsumsi makanan/minuman yang mengandung asam. Tujuan; mengetahui perbedaan pengaruh perendaman air perasan jeruk lemon dan air perasan asam cikala terhadap kekasaran resin komposit nanofiller. Metode; penelitian eksperimental laboratoris dengan sampel resin komposit nanofiller. Uji statistik menggunakan uji anova. Hasil; menunjukkan ada perbedaan yang signifikan (p<0,05) antara kekasaran resin komposit nanofiller yang direndam air perasan asam cikala dengan kelompok kontrol tetapi hasil penelitian menunjukkan tidak ada perbedaan yang siginifikan (p>0,05) antara kekasaran resin komposit nanofiller yang direndam air perasan jeruk lemon dengan kelompok kontrol. Kesimpulan; bahwa terdapat perbedaan yang signifikan antara pengaruh rendaman air perasan asam cikala dan air perasan jeruk lemon terhadap kekasaran permukaan resin komposit nanofiller.
Pengaruh Tomat dan Buah Jeruk Nipis Sebagai Bahan Pemutih Alami Gigi
Authors: Salsabila Shania , Putra Member Reni , Wijaya Steven , Mulyanti Rizky
Published: May 2021

Pendahuluan; penampilan merupakan salah satu aspek yang sangat diperhatikan seseorang dalam melakukan interaksi sosial di zaman modern sekarang ini. Tujuan; mengetahui perbedaan efektivitas tomat (Solanum lycopersicum) dan jeruk nipis (Citrus limon L) sebagai agen pemutih gigi alami. Metode; Jenis penelitian eksperimental laboratoris dengan pretest dan posttest only with control group design. Uji analisis yang digunakan adalah uji ANOVA satu arah dan LSD posthoc. menunjukkan terdapat perbedaan nilai pengamatan warna pada ekstrak buah tomat, ekstrak lemon dan kelompok kabrmid peroksida setelah perendaman selama 1 jam, 3 jam dan 5 jam. Kesimpulan; bahwa terdapat pengaruh tomat (Solanum lycopersicum) dan jeruk nipis (Citrus limon L) sebagai bahan alami pemutih gigi.
MANAGEMENT OF APPENDICULAR LUMP: SINGLE INSTITUTE EXPERIENCE IN A TERTIARY CARE CENTRE
Authors: Moharjal Pranjal , Singh Amit
Published: May 2021

Background/Aim: In every surgeon's routine practice, one of the most common acute surgical condition is acute appendicitis. Appendicular lump
is formation occurs if treatment is delayed, in around 2- 6% of patients. The standard management of appendicular lump is conservative, followed
by interval appendectomy. If conventional treatment is followed around 10-20% of the cases are not resolved and lead to gangrene or perforation
followed by appendicular abscess or generalised peritonitis requiring early surgical intervention. Our study is a comparison of early exploration
versus conservative management of appendicular lump. Material and Methods:Aprospective study conducted on 200 patients who presented to
emergency or surgical opd at a tertiary care centre in central Rajasthan, India. All patients presenting with an appendicular lump over a period of 2
years were included in the study. The participants were divided randomly into two groups; Group 1 consisted of people who underwent early
surgical intervention and group 2, consisting of people in whom conservative approach with OCHSNER SHERREN REGIME followed by
interval appendectomy was done. Results: Out of 200 patients, the majority were males belonging to the age group of 15–20 years. Clinical
presentation was similar among both the groups, although complications were signicantly more among Gr(P-0.04). The mean hospital stay
among group 2 was 6+/-1.8 days which was substantially less than that of group 2, 8+/-2.06 days.Conclusion: Thus, we concluded from the study
ndings that early surgical exploration in cases of appendicitis helps in early diagnosis and treatment, decrease the hospital stay as well as
complications thereby reducing the cost of treatment.
PHYSIATRY DURING COVID-19: A SURVEY BASED ANALYSIS
Authors: Joshi Mrinal , Choudhary Aayushi
Published: May 2021

Introduction: The declaration of COVID 19 pandemic by WHO on 11th March 2020, is the dening global health crisis of the past 100 years. The
following Nationwide survey was conducted to ascertain the sea changes this pandemic has brought in the physiatrist practice, patient management
and preparing oneself to the challenges of rehabilitation in the POST COVID world. The survey covers the role and importance of social media in
medical education and consultation in a POST COVID world. It also sheds light on the nancial implications and personal lifestyle changes that
physiatrists are witnessing. A Google form comprising of 74 questions, divided in 3 se Material &Methods: ctions, was used to gather the requisite
data on :-
A) PRECOVID practice, management and lifestyle;
B) Life during COVID pandemic; and
C) Anticipated changes in POST COVID era.
The survey was circulated to 400 physiatrist via various interactive groups who have been practicing either independently or in govt setups and
associated hospitals nationwide. They were requested to submit their responses in a period of 30 days. In PRECOVID era an average Result:
physiatrist was nely balancing his profession, personal lifestyle, learning and recreation. The LOCKDOWN clamped their practice which lead to
nancial drought but hardly made a dent in productivity by engaging in webinars, reading and researching. The POST COVID time demands
implementation of newer safety protocols like changes in setup, regulating the patient trafc, limiting daily procedures, engaging in distance
learning through virtual conferences, maintaining a healthy lifestyle and constructing proper protocols for pulmonary, neurological and
musculoskeletal rehabilitation programs for patients post recovery from COVID19, especially the patients weaning from ventilators. Conclusion:
The effect of COVID19 demands major change in physiatrist professional practice like limiting consultation, following safety protocols, COVID
testing, preparing consolidated program for POSTCOVID sequel. Social media is rightly poised to be a major tool for education, consultation,
marketing and awareness. The role of teleconsultation needs to be reprised, recognised and regularised. Webinars and virtual conferences will nd
more takers in future.
EFFICACY OF DISINFECTION ON VARIOUS SURFACES
Authors: Rajiva Rajiva , Sahu Rajesh , Dangwal Vidhu , Singh PMP
Published: May 2021

Introduction:Various workers have demonstrated that environmental surfaces near patients in health care settings are full of contamination.
However, despite extensive search on the internet studies on efcacy of disinfection on various surfaces were conspicuous by their scarcity.
Methodology:Randomly selected sites measuring one sq inch in size were marked on various surfaces in a presumably Non Covid19 health care
facility. A total of twenty four samples were taken as against the minimum required of twenty. The surfaces were subsequently disinfected using
70% alcohol based disinfecting wipes which were procured locally. All samples were suitably labelled to avoid any mixing of samples. The
samples were plated on blood agar media and Mc Conkey's media and incubated at 370C for 3 days. The mean levels of contamination on various
surfaces before and after disinfection were analysed and compared for log10 reduction using appropriate statistical tests. Results:The difference in
mean level of contamination across the various surfaces before disinfection was statistically very highly signicant at 5% level of signicance. (F =
6980453.16, p = 0.00). The difference in mean level of contamination across the various surfaces after disinfection was statistically not signicant
at 5% level of signicance. (F = 3.14, p = 0.08). This study demonstrates that 70% alcohol based disinfecting wipes which are easily available
locally are equally effective in reducing microbiological contamination on various surfaces.Conclusions:In our study, the workers have conrmed
that use of 70% alcohol based disinfecting wipes which are commercially available can signicantly reduce the microbiological plate count from
various commonly touched surfaces in a health care setting.
OTO MASTOIDITIS AND SEPTIC CEREBRAL VENOUS THROMBOSIS
Authors: P Moorthy Moses. , Srinivasan AV , Begum Shifa , Prasanthi K.
Published: May 2021

11 yr old female child, admitted with history of fever, left ear pain,
swelling behind the left ear of 5 days duration, for which she was
treated by a nearby doctor. After 1 week the child had left ear
discharge, headache, neck pain, recurrent episodes of vomiting. On
general examination she is thin built, febrile, toxic and dehydrated. On
local examination she had ear discharge, swelling behind the left ear.
On neurological examination, she had neck stifness. Routine blood
investigations including, CBC, LFT, RFT were normal. On CSF
examination Protein-188 mg%,Sugar- 16 mg%,Cell count-165
cells/cumm,85% were Neutrophils. Aural swab C/S showed growth of
Klebsiella sensitive to Amikacin, Ciprooxacin, Piperacillin /
Tazobactum and Cotrimoxazole. ENT opinion was in favour of doing
Mastoidectomy. HRCT Temporal bone showed complete
opacication of external auditory canal, tympanic cavity and mastoid
air cells with a possibility of lling up with pus. MRI BRAIN showed
Left mastoid and postauricular abscess, mastoiditis, ventriculitis,
venulitis with thrombosis of left transverse and sigmoid sinuses.
Patient was treated with parenteral piperacillin tazobactum,
Ciprooxacin, Amikacin, Metronidazole, Mannitol, Dexamethasone
and Low molecular weight heparin.Patient improved in 3 weeks.Ear
discharge dried up, mastoid abscess subsided, and the child became
active and ambulant
SYNCHRONOUS SPORADIC BREAST AND COLON CANCER: A RARE CASE REPORT
Authors: Ghosh Sandeep , Joseph Bonny , Dhakad Vinod , Desai Sanjay
Published: May 2021

Cancer is a serious health problem worldwide, being responsible from ¼ of all deaths. Cancers developing from more than one origin are called
multiple primary cancers (MPCs) and is a rare entity with a reported frequency of 0.73%–11%. There are no guidelines for the management of
synchronous tumours. Because of this, development of patient-oriented treatment strategy is necessary to decide which cancer to treat rst and how
to stratify further treatments. We present a case with synchronous sporadic breast and colon cancer. If adjuvant therapy is required, it should be
directed towards the tumour with the more advanced stage. The prognosis of synchronous tumours depends on each tumour stage independently
Long-Acting Injectable Antipsychotic Use in Patients with Schizophrenia and Criminal Justice System Encounters
Authors: Bhatta Madhav P. , Bista Saroj , El Khoury Antoine C. , Hutzell Eric G. , Tandon Neeta , Smith Douglas
Published: May 2021

Background: Nonadherence to medication is prevalent in persons diagnosed with schizophrenia, thus increasing the likelihood of relapse, poor health outcomes, hospitalization, high treatment costs, and high rates of both violent and non-violent offenses.

Objective: To assess the association between long-acting injectable (LAI) antipsychotic use and criminal justice system encounters in patients with schizophrenia or schizoaffective disorder.

Methods: This retrospective follow-up study was conducted among patients aged ≥18 years treated for schizophrenia or schizoaffective disorder at a community mental health center in Akron, Ohio, between January 1, 2010, and June 15, 2016. The incidence of criminal justice system encounters at 6 months, 1 year, and 2 years pre- versus post-LAI antipsychotic initiation was assessed. A subanalysis was conducted for individuals with a history of prior arrest.

Results: Overall, the risk ratio (RR) of having an encounter with the criminal justice system was significantly lower for patients treated with LAI antipsychotics 1 year after initiation of treatment compared with a similar time period prior to initiation (RR [95% confidence interval (CI)]: 0.74 [0.59–0.93]; P<0.01) and 2 years (0.74 [0.62–0.88]; P<0.0001). Statistically significant reductions in criminal justice system encounters after treatment than before treatment were observed in the once-monthly paliperidone palmitate (PP1M) cohort. The incidence of arrests was lower in the 6-month (27 vs 85 arrests), 1-year (46 vs 132 arrests) and 2-year (88 vs 196 arrests) periods post-index LAI medication than in the corresponding periods pre-index LAI medication among individuals with a history of prior arrest.

Conclusions: Patients with schizophrenia or schizoaffective disorder who were initiated on a LAI antipsychotic medication, specifically PP1M, were less likely to have an encounter with the criminal justice system compared with a similar time period before the initiation of LAI treatment.
COVID-19 Risk Minimization Decision Making Strategy Using Data-Driven Model
Authors: Sungheetha Akey
Published: May 2021

In order to establish social resilient and sustainable cities during the pandemic outbreak, it is essential to forecast the epidemic trends and trace infection by means of data-driven solution addressing the requirements of local operational defense applications and global strategies. The smartphone based Digital Proximity Tracing Technology (DPTT) has obtained a great deal of interest with the ongoing COVID-19 pandemic in terms of mitigation, containing and monitoring with the population acceptance insights and effectiveness of the function. The DPTTs and Data-Driven Epidemic Intelligence Strategies (DDEIS) are compared in this paper to identify the shortcomings and propose a novel solution to overcome them. In terms of epidemic resurgence risk minimization, guaranteeing public health safety and quick return of cities to normalcy, a social as well as technological solution may be provided by incorporating the key features of DDEIS. The role of human behavior is taken into consideration while assessing its limitations and benefits for policy making as well as individual decision making. The epidemiological model of SEIR (Susceptible–Exposed–Infectious–Recovered) provides preliminary data for the preferences of users in a DPTT. The impact of the proposed model on the spread dynamics of Covid-19 is evaluated and the results are presented.
Cyberbulling and otherness at scholl: A study in social representations with students from São José dos Quatro Marcos, Mato Grosso.
Authors: Barbosa C. H. M.
Published: May 2021

This article born from project entitled "The multiple faces of the violence at school" developed by the Interdisciplinary Nucleus of Research in Education and Society (NIPES), from Quatro Marcos College, Mato Grosso. The aim of this research was to approach of social representations of bullying and cyberbullying and discuss, thus, the impasses for the construction of otherness, among adolescents, students from public schools from SÃ£o JosÃ© dos Quatro Marcos, Mato Grosso. The empirical material was achieved by realization of interviews with participants between 14 and 17 years old, during the first semester of 2010. The Thematic Content Analysis was the method of data analysis listed for the evaluation of sense nucleus, around which, other ideas gravitated, for the explanation of social representations of bullying, cyberbullying and possible correlations of these with the dealing with the difference, at the scholar ambit. The results showed that the use of the Internet by research subjects and the intergroup relations, at school, are strongly related. The "teasing" and the placement of nicknames, among students, seemed to be the privileged way to deal with the different, who was mocked, in virtual space, for not being well-liked or accepted, within a group. Guided by discredit and disregard to the moral integrity, the teasing had teenager colleagues and teachers as main targets, being this realization justified, for the interviewees, authors of these acts, for being "something natural from adolescence."
Physico-Chemical and Microbiological Evaluation of Water Distributed in Juara - MT, Brazil
Authors: Nascimento H. D. , Barreto E. S.
Published: May 2021

The objective of this study was to evaluate the quality of water distributed in the city of Juara-MT as the physico-chemical parameters and total and fecal coliforms. It was selected 20 locations between residences and commercial establishments that best characterized the urban area of the city for the analysis and comparison of the parameters of pH, color, turbidity, fluorine, chlorine residual and total and fecal coliforms. The results were compared with the limits established by the Ministério da Saúde and also with the Conselho Nacional do Meio Ambiente (CONAMA). We have not detected any traces of total coliforms. Color, pH, turbidity and chlorine residual levels were within the legal limits established. The suitable values of fluorine were not achieved in some samples. The results showed that the water used by the residents on the dates of collection was within acceptable limits for human consumption, except for the amount of fluorine in some samples.
КИБЕРБЕЗОПАСНОСТЬ КАК ОСНОВА ЦИФРОВОЙ ТРАНСФОРМАЦИИ ЭКОНОМИКИ
Authors: Мустафаев А.Г. , Бучаев А.Я. , Амаров А.А.
Published: May 2021

Цифровая трансформация экономики характеризуется инновационными процессами, которые информационные технологии внедряют во все сферы социально-политической и экономической жизни общества. Инфокоммуникационные технологии меняют модели общения между людьми и организациями. Все больше компаний строят бизнес-процессы на основе сквозной интеграции информационных потоков и на их непрерывной аналитике, принимая управленческие решения на основе данных о своих клиентах. Вызовами и угрозами для реализации целей развития цифровой экономики в сфере информационной безопасности является увеличение масштабов киберпреступности. Из-за повышенного спроса и высокой конкуренции многие инновации внедряются без надлежащего тестирования безопасности данных. Новые технологии могут стать инструментом в руках злоумышленников, создавая новые поверхности атак, а также новые механизмы обхода существующих средств защиты.
Collage y simulacro. Apuntes sobre el teatro documental de Lola Arias
Authors: Galindo Fernanda , Brenscheidt genannt Jost Diana
Published: May 2021

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La Investigación en la Práctica Artística como una Observación de Segundo orden.
Authors: Valencia Ramos Arturo
Published: May 2021

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About the radius of convexity of some analytic functions
Authors:   BABES-BOLYAI UNIVERSITY DEPARTMENT OF MATHEMATICS E-mail address: engel olga@hotmail.com, ENGEL OLGA , KUPAN PAL A. ,   BABES-BOLYAI UNIVERSITY DEPARTMENT OF MATHEMATICS,   SAPIENTIA HUNGARIAN UNIVERSITY OF TRANSYLVANIA DEPARTMENT OF MATHEMATICS-INFORMATICS E-mail address: kupanp@ms.sapientia.ro, PALL- SZABO AGNES O. ,   BABES-BOLYAI UNIVERSITY DEPARTMENT OF MATHEMATICS,   SAPIENTIA HUNGARIAN UNIVERSITY OF TRANSYLVANIA DEPARTMENT OF MATHEMATICS-INFORMATICS E-mail address: kicsim21@yahoo.com
Published: May 2021

In this paper we prove a general result regarding the radius of convexity for different particular functions. The method of convolutions is used. The results are applied to deduce sharp bounds regarding functions, which satisfy differential subordinations.
Bienlargements on generalized topological spaces
Authors:   UNIVERSIDAD DE ORIENTE DEPARTAMENTO DE MATEMATICAS CUMANA, VENEZUELA E-mail address: carpintero.carlos@gmail.com, CARPINTERO CARLOS , RAJESH NAMEGALESH ,   DEPARTMENT OF MATHEMATICS RAJAH SERFOJI GOVT. COLLEGE THANJAVUR-613005 TAMILNADU, INDIA E-mail address: nrajesh topology@yahoo.co.in, ROSAS ENNIS ,   UNIVERSIDAD DE ORIENTE DEPARTAMENTO DE MATEMATICAS CUMANA, VENEZUELA E-mail address: ennisrafael@gmail.com
Published: May 2021

The aim of this paper is to introduce and study the concept of bienlargement on generalized topological spaces.
Coefficient bounds for certain subclasses of bi-univalent functions
Authors:   ULUDAG UNIVERSITY DEPARTMENT OF MATHEMATICS FACULTY OF ARTS AND SCIENCE 16059 BURSA,TURKEY E-mail address: sahsene@uludag.edu.tr, ALTINKAYA SAHSENE , YALCIN SIBEL ,   ULUDAG UNIVERSITY DEPARTMENT OF MATHEMATICS FACULTY OF ARTS AND SCIENCE 16059 BURSA,TURKEY
Published: May 2021

In this paper we discuss some newly constructed subclasses of bi-univalent functions and establish bounds for the coefficients of the functions in the subclasses SΣ(λ, α) and SΣ(λ, β).
Connectedness via b - open sets
Authors:   UNIVERSITY OF GOUR BANGA DEPARTMENT OF MATHEMATICS P.O. MOKDUMPUR, 732 103, MALDA, INDIA E-mail address: spmodak2000@yahoo.co.in, MODAK SHYAMAPADA , NOIRI TAKASHI ,   2949-1 SHIOKITA-CHO HINAGU, YATSUSHIRO-SHI KUMOMOTO-KEN, 869-5142, JAPAN E-mail address: t.noiri@nifty.com
Published: May 2021

In this paper we define a new type of connectedness by using b - open sets and discuss the relationship between this connectedness and various types of connectedness already defined in topological spaces.
Interactive dynamic tests for evaluating the development of spatial abilities in high school
Authors:   BUDAPEST BUSINESS SCHOOL, UNIVERSITY OF APPLIED SCIENCES COLLEGE OF INTERNATIONAL MANAGEMENT AND BUSINESS INSTITUTE OF BUSINESS TEACHER TRAINING AND PEDAGOGY DISY LAJOS S. 22-24. 1165 BUDAPEST - XVI. DISTR. E-mail address: budai0912@gmail.com, BUDAI LASZLO
Published: May 2021

In the last 10-15 years the number of studies examining spatial abilities of students has increased rapidly. The development of the spatial ability system components is important since these skills are used in everyday life and in order to reach our goal (position) people need good spatial perception in many cases. GeoGebra is a suitable and effective tool for developing these abilities. New methods for measuring these abilities can be developed that would be better adapted to today’s needs. The dynamic and interactive adaptation of available GeoGebra tests for measuring spatial abilities would place these measurements on a new ground. However, there are many unanswered questions. The technical background, results and experiences of pilot a test of these methods are presented here.
Kannan contractions and strongly demicontractive mappings
Authors:   WEST UNIVERSITY OF TIMISOARA, ROMANIA E-mail address: maruster@info.uvt.ro, MARUSTER STEFAN , RUS IOAN A. ,   UNIVERSITY BABES-BOLYAI CLUJ-NAPOCA, ROMANIA E-mail address: iarus@math.ubbcluj.ro
Published: May 2021

Inclusion relations between strongly demicontractive mappings, quasi (L, m)-contractions, and Kannan contractions are established. As corollaries, T-stability and strong convergence of Picard and Mann iterations for strongly demicontractive mappings are obtained.
Some conjugate WP-Bailey pairs and transformation formulas for q-series
Authors:   DEPARTMENT OF MATHEMATICS AND STATISTICS UNIVERSITY OF VICTORIA VICTORIA, BRITISH COLUMBIA V8W 3R4, CANADA, SRIVASTAVA H. M. ,   CHINA MEDICAL UNIVERSITY TAICHUNG 40402, TAIWAN, REPUBLIC OF CHINA E-mail address: harimsri@math.uvic.ca, SINGH S. N. ,   DEPARTMENT OF MATHEMATICS TILAK DHARI POST-GRADUATE COLLEGE JAUNPUR 222002, UTTAR PRADESH, INDIA E-mail address: snsp39@gmail.com, SINGH S. P. ,   DEPARTMENT OF MATHEMATICS TILAK DHARI POST-GRADUATE COLLEGE JAUNPUR 222002, UTTAR PRADESH, INDIA E-mail address: snsp39@gmail.com, YADAV VIJAY ,   DEPARTMENT OF MATHEMATICS AND STATISTICS S. P. D. T. COLLEGE ANDHERI (EAST), MUMBAI 400059, MAHARASHTRA, INDIA E-mail address: vijaychottu@yahoo.com
Published: May 2021

In this paper, the authors prove several theorems involving q-series identities by applying a certain family of conjugate WP-Bailey pairs. Making use of these theorems in conjunction with some WP-Bailey pairs, various transformation formulas for q-series are also established.
Determinants of Loyalty in Cultural Destinations: Evidence from Petra, Jordan
Authors: Shammout Ahmad Bahjat , Al-Okaily Nour Salah , Alrawadieh Ziad , Ekiz Erdogan H.
Published: May 2021

It is commonly understood within the tourism industry that the longer term success of a destination depends on visitor loyalty. While there have been extensive scholarly investigations of destination loyalty, there has been minimal empirical examination of the most critical determinants of loyalty within a single integrated model, particularly in the context of cultural destinations. To bridge this gap, this study investigates the direct influence of five factors on destination loyalty; destination image, destination awareness, perceived risks, perceived quality, and perceived value. The authors also provide new evidence about these relationships, with a focus on Petra, one of the world's most popular cultural-oriented destinations. Using a purposive sampling method, a total of 708 surveys were collected from international tourists who visited Petra between April and June 2019. It was found that all antecedents, apart from perceived risks, had a positive impact on destination loyalty. Apart from extending knowledge about destination loyalty, this study provides key implications for practitioners and proposes a future research agenda.
Romanticizing the Raj Through Tales of the Royal Kitchens
Authors: Roychowdhury Iti
Published: May 2021

Raj has always been a fascinating study for the West. East was that mystical land of snake charmers and tight rope walkers, of bejeweled Maharajas riding on elephants and naked fakirs performing their rope tricks. It has been debated that the Orient was romanticized for the West's own
interests—to lure the West to the East, to make postings to India more palatable, to find charm in an alien culture and civilization. The present article aims to explore how writings on the royal kitchen have added to the image of the exotic Orient and inspired interest both in India
and in the Indian cuisine.
PENGARUH KUALITAS PELAYANAN TERHADAP KEPUASAN MASYARAKAT DI KANTOR URUSAN AGAMA KECAMATAN RANTAU BAYUR KABUPATEN BANYUASIN
Authors: Rahman Puji
Published: May 2021

This public service is very important because it is always connected with the public or the general public who have a variety of interests and goals. The results showed that the Community Satisfaction Survey (SKM) on services at the Office of Religious Affairs in Rantau Bayur District was good. This can be seen from the survey value obtained by 3.47 and the SKM value of 86.75 which means that the quality of service is included in category B, so that the service can be said to be good. Based on the determinant test, it was found that the adjusted R Square (coefficient of determination R²) was 0.355 which means that the variable quality of service to community satisfaction at the Office of Religious Affairs, Rantau Bayur District, Banyuasin Regency has a contribution of 0.355 or 35.5% while the remaining 0.645 or 64.5 % explained by other variables not included in this study.
Best Practices in Quality Assurance in Selected Higher Education Institutions (HEIs) in the Philippines in the Light of the Malcolm Baldrige Framework
Authors: Miranda R. D. , Reyes-Chua E.
Published: May 2021

HEI 's success is now focused on quality assurance. In the Philippines, best practices in HEI's QA cannot be recognized without the support of quality managers, faculty members and staff. Each member has an essential role to play in promoting a successful quality management. With the advent of technology, Quality Assurance is continually in demand. Its process and human resource, in effect, will keep the organization's efficiency. This study addresses how such degree programs are related to the accreditation level of the eight private institutions in the Philippines. We found out that leadership and governance results, financial and market results, and customers were highly implemented by the eight (8) Higher Education Institutions while product and process, customer -focused, and workforce-focused results were implemented. In terms of the level of accreditation, Level 2 (50%) garnered the greatest number of frequencies followed by Levels 3 and 4 (12.5%) and Institutional Accreditation (25%) which means that most programs are accredited while a few are subject to preliminary accreditation. This implies that each institution has highly implemented those three criteria or best practices while the rest has implemented the other four criteria or best practices in the fulfilment of the colleges and universities’ Quality Assurance.
Networked Iterative Learning Fault Diagnosis Algorithm for Systems with Sensor Random Packet Losses, Time-varying Delays, Limited Communication and Actuator Failure : Application to the Hydroturbine Governor System
Authors: Herve Samba Aime , Aurelien Yeremou Tamtsia , Judith Hermine Som Idellette , Leandre Nneme Nneme
Published: May 2021

An iterative learning fault diagnosis (ILFD) algorithm for networked control systems (NCSs) subject to random packet losses, time-varying delays, limited communication and actuator failure is proposed in this paper. Firstly, in order to evaluate the effect of fault on system between every iteration, the information of state error and information of fault tracking estimator from the preceding iteration are used to improve the fault estimation achievement in the actual iteration. The state variable, the Bernoulli process of random packet losses, network communication delay, limited communication and actuator failure are introduced to establish an extended statespace model of the system. Secondly combining Lyapunov stability theory for linear repetitive processes and linear matrix inequality (LMI) technique, new sufficient condition for the existence of an iterative learning fault diagnosis is established. Finally, the feasibility and effectiveness of the proposed design method is illustrated on a dynamic hydroturbine governing system model based on Matlab/Simulink and TrueTime toolbox
Toeplitz Like Operators on 2-nuclear Tensor Product of Hardy Spaces
Authors: Shatarah Amani
Published: May 2021

in this paper, we investigated Toeplitz like operators on vector valued Hardy spaces. Toeplitz like operators on 2-nuclear tensor product of Hardy spaces are then constructed and described using the theory of p-nuclear tensor product of Banach spaces, and their basic algebraic properties and spectrum are analyzed.
Pelatihan Pembuatan Media Pembelajaran Matematika di SD Negeri Jatimekar 02
Authors: Asri Sri Awan , Rahim A , Rahmad Ilmi Noor
Published: May 2021

In general, elementary school age children (SD) are experiencing development at their thinking level, elementary school children's thinking stages are still not formal and are still concrete in nature. Therefore, the teacher must present material that is real so that elementary students can understand the concept completely. Based on the results of interviews with several mathematics teachers and principals, information was obtained that mathematics learning is carried out very rarely using media, especially in the form of props or other innovative media. Regarding the above problems, we are interested in conducting training through a community service program entitled "PKM Training on Making Mathematics Learning Media at SDN Jatimekar 02." This PKM is carried out in the form of three meetings training. The training participants were a number of teachers at SDN Jatimekar 02 Pagi. The presentation material in this service activity is: (1) The concept of learning media that is in accordance with the characteristics of Mathematics subjects along with examples of implementation in learning (2) Making learning implementation plans (RPP) with appropriate learning media (3) Simulation of implementing cooperative learning media in learning, and (4) assessment of learning using instructional media. Based on the results of the evaluation, 28 out of 32 participants understood the concept of learning media well, 25 participants were able to develop plans for implementing learning using media, and 30 participants were able to use media when learning in class.
Werkstoffe sind Basis für technische Innovationen
Authors: Bose-Munde Annedore
Published: May 2021

Die VDI-Gesellschaft Materials Engineering engagiert sich für Wissen und Kompetenz rund um Werkstoffe. Geschäftsführer Dr. Hans-Jürgen Schäfer erläutert die Aufgaben und Ziele der Gesellschaft und gibt Einblicke in geplante Projekte und Vorhaben.
Lücken und Herausforderungen bei der praktischen Umsetzung des Model-Based Systems Engineering
Authors: Fresemann Carina , Sauer Christopher , Schleich Benjamin , Stark Rainer , Wartzack Sandro
Published: May 2021

Im Rahmen der Zusammenarbeit der Friedrich-Alexander-Universität Erlangen-Nürnberg und der Technischen Universität Berlin wurde eine interaktive Studie mit 20 Experten aus großen und kleinen Unternehmen aus dem deutschsprachigen Raum durchgeführt. Ein Ziel der Studie war die Feststellung von Lücken und Herausforderungen, welche die bereits seit einigen Jahren bestehenden wissenschaft-lichen Erkenntnisse und damit verbundene neue digitale Fähigkeiten in der industriellen Praxis limi- tieren. Der vorliegende Artikel beschreibt sowohl das Vorgehen als auch die Erkenntnisse der Studie. Darüber hinaus leitet sich weiterer Handlungsbedarf ab.
Kostenmanagement von Produkt-Service- Systemen/Managing Costs of Product-Service Systems
Authors: Johannknecht Florian , Herrmann Marc , Lachmayer Roland
Published: May 2021

Inhalt: Um Produkte und Dienstleistungen kostengerecht zu entwickeln, muss ein entwicklungsbegleitendes Kostenmanagement erfolgen. Da nach der Konzeptphase bereits ein Großteil der Lebenszykluskosten festgelegt ist, müssen die Kostenprognose sowie -optimierung schon in frühen Entwicklungsphasen einsetzen. Im Rahmen der Kostenprognose werden vier Modelle vorgestellt, die dem Informationsstand über das Entwicklungsobjekt angepasst sind und die Verfügbarkeit des Systems berücksichtigen. Parallel werden die iterativ ermittelten Kosteninformationen genutzt, um die Gesamtkosten zu optimieren. Ein Fallbeispiel zeigt abschließend Möglichkeiten der Entscheidungsunterstützung für Entwickler und Manager.
Auslegung und Anwendung gezahnter Krafteinleitungen für hoch beanspruchte Faser-Kunststoff-Laminate/Design and Application of a Toothed Force Introduction Concept for Fiber Polymer Composites
Authors: Elter Alexander , Schürmann Helmut
Published: May 2021

Inhalt: Die Einleitung hoher Kräfte in Leichtbau-optimierte Faserverbundstrukturen ist eine konstruktive Herausforderung. Konzeptuelle Überlegungen am Fachgebiet „Konstruktiver Leichtbau und Bauweisen“ der TU Darmstadt ließen erkennen, dass die Verwendung feingezahnter Krafteinleitungsflächen über ein hohes Potential verfügen. Das Thema wurde in umfassenden Untersuchungen vertieft. Als Ergebnis der Forschungsarbeiten an der feingezahnten Krafteinleitung lassen sich nunmehr die übertragbaren Kräfte berechnen, die auftretenden Versagensbilder beurteilen und detaillierte Auslegungsempfehlungen ableiten.
Kugelstrahlsimulation mit neuartiger Elementarzelle – Bauteilauslegung bis Strahlparameter/Shot Peening Simulation with a Novel Unit Cell – Component Design to Peening Parameters – Part 1: Simulation Model and Residual Stress Field
Authors: Richter Christoph Hermann , Gerken Patrick , Zeißig Michaela , Telljohann Gerd
Published: May 2021

Inhalt: In diversen Branchen des Maschinenbaus wird Kugelstrahlen zur Steigerung der Bauteilfestigkeit eingesetzt. Die Auslegung der Verfestigung wird heute oft mit iterativen Versuchen vorgenommen. Im hier vorliegenden ersten Teil der Veröffentlichung, „Simulationsmodell und Eigenspannungsfeld“, wird eine wirtschaftliche Simulation auf Basis einer neuartigen Zellperiodizität vorgestellt. Diese erlaubt prozessrelevante Parameter vorherzusagen und resultierend auf die Eigenspannungsmessung zu verzichten. Ferner wird die in der Literatur nur selten behandelte Inhomogenität des Eigenspannungsfeldes näher untersucht. Im zweiten Teil der Veröffentlichung, „Anwendungen“, dienen im Schrifttum verfügbare Messdaten zu Almen-Proben der Validierung. Darüber hinaus wird der Nutzen des Kugelstrahlens am Beispiel der schwer zu beherrschenden Reibermüdung mit einer integrativen Simulation beleuchtet.
Methode zur Auslegung von Verzahnungskorrekturen unter Lastkollektivbelastung
Authors: Fingerle Andreas , Hein Michael , Tobie Thomas , Otto Michael , Stahl Karsten
Published: May 2021

INHALT Die Notwendigkeit für Verzahnungskorrekturen im Hinblick auf die Flankentragfähigkeit ergibt sich in Leistungsgetrieben maßgeblich aus den lastbedingten Verformungen der umliegenden Bauteile sowie der Zahn- und Radkörperverformung selbst. Unter Lastkollektivbelastung sind auch diese Verformungen im Betrieb nicht konstant. In dieser Veröffentlichung wird ein Verfahren gezeigt, mit dem eine Flankenkorrektur ermittelt werden kann, die hinsichtlich der Flankentragfähigkeit unter Lastkollektivbelastung optimiert ist. Die gezeigte Methode wurde im Rahmen des FVA- Vorhabens 722/I entwickelt. Die Ergebnisse der Korrektur- bestimmung wurden anhand von Industriebeispielen validiert und weisen eine hohe Übereinstimmung mit den in der Praxis auf Basis von Erfahrungswissen ausgeführten Zahnflanken-korrekturen auf.

 

A Method to Determine Toothing Corrections under Variable Load Conditions
„MAGMAKegel“: Simulation abweichungsbehafteter Kegelrollenlager
Authors: Aschenbrenner Alexander , Schleich Benjamin , Tremmel Stephan , Wartzack Sandro , Stahl Thomas
Published: May 2021

Kegelrollenlager eignen sich hervorragend für tragfähige und führungsgenaue Lagerungen. Wie jedes reale Bauteil unterliegen jedoch auch Kegelrollenlagerkomponenten Maß-, Form- und Lageabweichungen. Diese Abweichungen haben Einfluss auf das Betriebsverhalten von Kegelrollenlagern. In einer Kooperation mit Schaeffler Technologies AG & Co. KG hat der Lehrstuhl für Konstruktionstechnik der Friedrich-Alexander-Universität Erlangen-Nürnberg das Softwarewerkzeug „MAGMAKegel“ entwickelt, mit welchem sich Toleranzanalysen durchführen lassen, um ebendiese Auswirkungen geometrischer Abweichungen auf Kegelrollenlager zu quantifizieren. Im vorliegenden Beitrag wird das Softwarewerkzeug genauer beschrieben.
Mit aktiver Ruckentkopplung zu reduzierten Maschinenschwingungen
Authors: Denkena Berend , Bergmann Benjamin , Böhse Frederic
Published: May 2021

INHALT Für die Hochgeschwindigkeitszerspanung, wie beispielsweise bei der Fräsbearbeitung von Strukturbauteilen aus Aluminium für die Luft- und Raumfahrt, werden Werkzeugmaschinen mit einer hohen Achsdynamik benötigt. Eine hohe Achsdynamik reduziert hierbei die Stückzeit und steigert somit die Produktivität der Anlage. Insbesondere bei kleinen Achs-bewegungen wird die Positionierzeit von der Beschleunigungszeit und der Zeit zum Erreichen der maximalen Beschleunigung dominiert. Eine hohe Achsdynamik ermöglicht dabei ein schnelles Erreichen der erforderlichen Achs-Beschleunigungen. Insbesondere Lineardirektantriebe ermöglichen durch große Kraftanstiegsgeschwindigkeiten eine hohe Achsdynamik und schnelle Beschleunigungsänderungen. Aufgrund des erforderlichen hohen Rucks (zeitliche Änderungen der Achsbeschleunigung) werden die Komponenten der Werkzeugmaschine jedoch zu Schwingungen angeregt. Die Schwingungen der Komponenten rufen ungewollte Relativbewegungen zwischen Werkzeug und Werkstück hervor. Dadurch wird die Genauigkeit der Werkzeugmaschinen gemindert. Als Gegenmaßnahme erfolgt in der Regel eine Begrenzung des maximalen Rucks der Antriebsachsen. Somit wird das Potenzial von Lineardirektantrieben nicht vollständig genutzt und es kommt zu einer Reduzierung der Produktivität. Das Institut für Fertigungstechnik und Werkzeugmaschinen (IFW) der Leibniz Universität Hannover erforscht daher einen neuartigen Ansatz zur Entkopplung des Rucks. Der Ansatz basiert dabei auf der Integration eines Aktors zwischen Antrieb und Maschinenstruktur, der die Schwingungen gezielt kompensiert. Es zeigt sich, dass durch den Einsatz des strukturintegrierten Aktors ein schnelles und um 40 % gedämpftes Ausklingen der Schwingungsamplitude der Maschinenstruktur erreicht wird. Als Folge erhöht sich die Genauigkeit der Vorschubachse bei gleichbleibender Achsdynamik.

 

 

Active Jerk Decoupling to Achieve Reduced Machine Vibrations
Robust und kostengünstig
Authors: Baierl Lisa
Published: May 2021

SKF hat eine neuartige Kombination aus Federbeinlager und Federunterlage für Federbeinsysteme auf den Markt gebracht: Dank einer speziellen Polymerfeder, die eine hochfeste Bindung mit der unteren Lagerschale eingeht, lässt sich mit weniger Komponenten eine höhere Robustheit erzielen. Zugleich sinken die Gesamtkosten für das Federbein.
Schraubengeometrie für Hochleistungskunststoffe
Authors: Bose-Munde Annedore
Published: May 2021

Bei Kunststoffverschraubungen gibt es eine Vielzahl verschiedener Faktoren, die Einfluss auf die Verbindung haben. Die Herausforderung ist es, eine Schraubengeometrie zu finden, die negative Aspekte wie Toleranzschwankungen ausgleicht. Zudem ist es wichtig, dass die Verbindungslösung optimal an die Gegebenheiten des Werkstoffs und an die Belastungsart angepasst ist.
Kältemittelkreisläufe als Wegbereiter für eine nachhaltige Gebäudeenergieversorgung
Authors: Vering Christian , Höges Christoph , Klingebiel Jonas , Klebig Tim , Henn Thomas , Venzik Valerius , Müller Dirk
Published: May 2021

In Teil 1 dieses Beitrags (HLH Bd. 72 (2021) Nr. 3) wurde bereits erläutert, dass Wärmepumpen zukünftig eine wesentliche Rolle zur nachhaltigen Energieversorgung in allen Sektoren spielen werden. Maßgeblich dafür sind hohe Effizienzen der Energiewandlung. Die Wärmepumpeneffizienz hängt dabei insbesondere von den äußeren Randbedingungen der Wärmequelle und -senke ab. Zudem ist die Auswahl des richtigen Kältemittels von entscheidender Bedeutung, da jenes die Auslegung der einzelnen Kreislaufkomponenten sowie die Prozessführung festlegt. Die Wahl des Kältemittels ist daher eine der ersten und gleichermaßen wichtigsten Entscheidungen bei der Entwicklung von Wärmepumpen [1],[2].