bluuebunny/crossref_metadata_2025 huggingface dataset:
EFFECT/BEHAVIOUR OF BLACK CURRANT LEAF ASH ON THE STRENGHT OF CONCRETE WITH RESPECT TO A CONTROL MIXES STRENGHT.
Authors: Gutti Mala Babagana , Musa Ani Abdulfatah
Published: January 2019

The use of waste materials with pozzolanic products in concrete production is becoming a worldwide practice. The assessment of the pozzolanic activity of cement replacement materials is becoming increasingly important because of the need for more sustainable cementing products. In this report, black currant leaf ash is used as partial replacement of 5% of the concrete material. The Strength and durability test were carried out in order to assess the feasibility of using black currant leaf ash as partial replacement of cement in concrete. A total of 18 concrete cubes of 150mm x 150mm x 150mm in size were produced with ordinary Portland cement, 9 concrete cubes as control mix and 9 concrete cubes of black currant blended cement concrete, the samples were tested, weighed, and crushed to obtain their compressive strength after curing in water at age 7, 14 and 21 days. The after the study was completed it was found that the strength of the concrete increase as the samples with replacement were almost the same in strength as the control, Therefore, ordinary Portland cement-black currant blended cement concrete could be used in civil engineering and building works, especially where early strength is not a major requirement, thereby reducing the cost of production.
Effects of a programme of vigorous physical activity during secondary school physical education on academic performance, fitness, cognition, mental health and the brain of adolescents (Fit to Study): study protocol for a cluster-randomised trial
Authors: Wassenaar Thomas , Wheatley Catherine , Beale Nicholas , Salvan Piergiorgio , Meaney Andy , Possee Jack , Atherton Kathryn , Duda Joan , Dawes Helen , Johansen-Berg Heidi
Published: January 2019

BackgroundEarly adolescence is a period of dynamic neurobiological change. Converging lines of research suggest that regular physical activity (PA) and improved aerobic fitness have the potential to stimulate positive brain changes, improve cognitive function and boost academic attainment in this age group, but high quality studies are needed to substantiate these findings. The primary aim of the Fit to Study trial is to investigate whether short infusions of vigorous PA (VPA) delivered during secondary school physical education (PE) can improve attainment in maths, as described in a protocol published by NatCen Social Research. The present protocol concerns the trial’s secondary outcome measures, which are variables thought to moderate or mediate the relationship between PA and attainment including the effect of the intervention on cardiorespiratory fitness, cognitive performance, mental health, and brain structure and function. MethodThe Fit to Study project is a cluster-randomised controlled trial that includes Year-8 pupils (aged 12-13) from secondary state schools in South/Mid-England. Schools were randomised into an intervention condition in which PE teachers delivered an additional 10 minutes of VPA per PE lesson for one academic year, or a ‘PE as usual’ control condition. Intervention and control groups were stratified according to whether schools were single-sex or co-educational. Assessments take place at baseline (end of Year-7, aged 11-12), and after 12 months (Year-8). Secondary outcomes are cardiorespiratory fitness, objective PA during PE, cognitive performance and mental health. The study also includes exploratory measures of daytime sleepiness, attitudes towards daily PA and PE enjoyment. A subset of pupils from a subset of schools will also take part in a brain imaging sub-study, which is embedded in the trial. DiscussionThe Fit to Study trial could advance our understanding of the complex relationships between PA and aerobic fitness, the brain, cognitive performance, mental health and academic attainment during adolescence. Further, it will add to our understanding of whether school PE is an effective setting to increase VPA and fitness, which could inform future PA interventions and education policy.Trial registrationClinicaltrials.gov, ID: NCT03286725. Retrospectively registered on 18th of September, 2017 Clinicaltrials.gov, ID: NCT03593863. Retrospectively registered on 19th of July, 2018Trial sponsor: University of Oxford. Protocol version: 1.
Pengolahan Dan Penyajian Makanan Malaysia
Authors: Zulfikar Dikki
Published: January 2019

Malaysia adalah negara yang memiliki keragaman budaya yang plural dan heterogen. Malaysia merupakan negara persemakmuran Inggris yang memiliki keragaman etnis, agama, dan budaya. Malaysia dan Indonesia merupakan saudara satu rumpun yang memiliki banyak persamaan. KeanekaragamanKeanekaragaman etnis, agama, dan budaya merupakan sedikit bentuk persamaan antara Malaysia dengan Indonesia. MasyarakatMasyarakat Malaysia identik dengan sebutan “orang Melayu”. Padahal bukan hanya Malaysia yang merupakan orang Melayu, Indonesia juga merupakan orang Melayu, dan negara-negara di Asia Tenggara juga merupakan orang Melayu. Mengapa harus ada sebutan “orang Melayu” bagi warga Malaysia? Padahal bukan hanya Malaysia yang merupakan orang Melayu. Ini semua karena faktor sejarah dan budaya yang ada di Malaysia. Sedikit berbeda dengan di Indonesia yang terdiri dari banyak etnis yang beranekaragam. Masyarakat Malaysia sudah lama mengakui bahwa minimal ada empat golongan etnis di Malaysia, yaitu etnis Melayu, Cina, India, dan penduduk asli yang bertempat tinggal di Sabah dan Serawak. Dengan kata lain, di Malaysia, masyarakat tidak terlalu dipusingkan dengan perbedaan etnis yang ada. Identitas tiap etnis yang berbeda pun dapat dengan mudah diterima dalam kehidupan bermasyarakat di Malaysia.adapun hidangan khas masyarakat Malaysia yaitu nasi lemak.
Keterlibatan berbagai pihak dalam upaya pelestarian mangrove di kawasan pesisir
Authors: SuHarni
Published: January 2019

Pentingnya pengelolaan hutan mangrove dalam menunjang ekonomi masyarakat pesisir dewasa ini menjadi sebuah perhatian khusus.
Applying Contemporary Interpersonal Theory to the Study of Trauma
Authors: Yalch Matthew , Burkman Kristine M.
Published: January 2019

Introduction: Symptom-focused theories of trauma and posttraumatic response have yielded many valuable clinical insights, ultimately leading a number of empirically supported approaches to diagnosing and treating trauma survivors. Limitations observed in these approaches have led some trauma-focused researchers and clinicians to examine the role not only of symptoms, but of interpersonal factors on trauma and posttraumatic response. The study of such interpersonal factors is the mainstay of contemporary interpersonal theory, although at present research and clinical intervention concerning trauma has been largely detached from the insights of contemporary interpersonal theory. Objective/Method: In this paper we review and integrate the disparate literatures on trauma and interpersonal theory. Results/Conclusion: We conclude that synthesizing these two literatures is not only feasible, but may also generate useful clinical insights and provide directions for future research relevant to trauma.
Affective Dynamics in Bipolar Spectrum Psychopathology: Modeling Inertia, Reactivity, Variability, and Instability in Daily Life
Authors: Sperry Sarah Havens , Kwapil Thomas Richard
Published: January 2019

Background: Bipolar psychopathology is characterized by affective dysregulation independent of mood episodes. However, previous research has relied on laboratory-based emotion-eliciting tasks or retrospective questionnaires that do not take into account temporal dynamics of affect. Thus, the present study examined affective dynamics (reactivity, variability, instability, and inertia) of low and high arousal negative affect (NA) and positive affect (PA) in daily life in those at risk for bipolar psychopathology. Methods: Undergraduates (n=135) completed the Hypomanic Personality Scale and experience sampling surveys assessing affective experiences 8 times daily for 7 days. Results: HPS scores were associated with greater reactivity of NA when experiencing negative or stressful events, variability of NA (high and low arousal) and PA (high arousal), and instability of NA and PA (high and low arousal) in daily life. HPS scores were associated with a high probability of acute increases in NA and PA and were unassociated with levels of inertia. Limitations: This study only examined short-term dynamics over 7 days. Future studies should model both short- and long-term dynamics and whether these dynamics predict behavioral outcomes. Conclusions: These results provide evidence that bipolar spectrum psychopathology is characterized by reactivity of NA as well as variability, instability, and acute increases in NA and PA in daily life over-and-above mean levels of affect. Modeling affective dynamics may provide context-relevant information about the course and trajectory of bipolar spectrum psychopathology and should facilitate the use of experience sampling methodology to study and intervene in mood lability in patients with bipolar disorders.
Using political sanctions to discourage intergroup attacks: Social identity and authority legitimacy
Authors: Urbanska Karolina , Pehrson Sam
Published: January 2019

De Dreu and Gross offer novel solutions to discouraging attackers via political sanctions. We offer insights from social psychological and criminological research on when such sanctions would work and when they could backfire. We argue that the influence of such sanctioning ultimately rests upon the extent to which such authorities can claim to represent the society they serve.
Lateral lumbar interbody fusion (LLIF): Technique and outcomes
Authors: Sutterlin Chester E. , Luscombe Jane E. , Day Jerry , Dubey Arvind
Published: January 2019

Introduction: Historically, an interbody device (IBD) has consisted of morselized autograft1, structural autograft, structural allograft, stainless steel ball, threaded titanium cage, polyetheretherketone (PEEK) cage, and more recently 3D printed titanium cage with bioactive surface characteristics and bony ingrowth into IBD interstices. These IBD’s have been inserted through a variety of approaches, both by open technique and by minimally invasive surgical (MIS) technique. Traditionally, the most common procedures have been posterior lumbar interbody fusion (PLIF), transfacetal lumbar interbody fusion (TLIF), and anterior lumbar interbody fusion (ALIF). Obviously, both PLIF and TLIF are posterior approaches, and ALIF is an anterior approach. More recent approaches in the retroperitoneal space anteriorly are oblique lumbar interbody fusion (OLIF) anterior to the psoas muscle, and lateral lumbar interbody fusion (LLIF) which is a transpsoas procedure. LLIF is the subject of this manuscript. The LLIF technique utilizing K2M’s Ravine retractor system and K2M’s lateral IBD’s, Aleutian (PEEK) and Cascadia (3D printed titanium) will be described (K2M, Leesburg, VA USA). Bone graft substitute, iFactor (Cerapedics, Colorado USA), was used in all cases. No autograft was harvested from the iliac crest, but local morselized autograft was utilized if available. The clinical outcomes for LLIF using these implants and instruments will be reported.
Surgical treatment of tuberculosis of spine: Nepalese experience
Authors: Bijukachhe Binod , Sutterlin Chester E.
Published: January 2019

Introduction : Spinal tuberculosis treatment goal is eradication of the disease, neurological protection, and deformity prevention. Accepted indications for conservative or surgical management of the disease are still lacking. The purpose of this study was to classify disease based on pre- and post-treatment clinical and radiological criteria to help management.

Material and methods : Out of 101 patients, retrospectively reviewed between 2007 and 2015, seventy adult patients (44 males, mean age 29 years, range 16-76) were included in the study. Patients were evaluated clinically for pain, deformity and neurological status while radiological evaluation included sagittal deformity, vertebra destruction and number of vertebrae involvement. 60 patients underwent surgery (abscess drainage, 2; anterior radical debridement and fusion, 12; anterior debridement + posterior instrumentation, 26; posterior instrumentation, 20) All patients were given anti-tuberculous treatment for 12 months. Mean follow up period was 44.9 months (range: 6-108 months).

Result: Pre-treatment pain (Visual analogue score, VAS 0-10, mean 7.52) improved by 0.99 at last follow up. Number of vertebrae involved ranged from 1 to 15 (mean 4.2). 38 patients had obvious clinical deformity with Cobb angle mean 36.6° (range 10°-130°). Deformity was corrected at mean of 17.5° (range: -60° to 90°) at last follow up.

There were two ASIA A, eight ASIA B, five ASIA C, four ASIA D and 51 patients with ASIA E neurology at the time of presentation. One patient with ASIA A neurology remained same even after decompression while other patient died on the day of surgery. Out of 8 patients with ASIA B neurology six patients improved to ASIA E, one patient remained same and one patient deteriorated to ASIA A. In ASIA C group, three patients improved to ASIA E. One patient deteriorated to ASIA A. All four patients with ASIA D neurological status improved to ASIA E. And all 51 patients with pre-operative ASIA E status remained same but one deteriorated to ASIA C.

Eight patients had deformity progression, two patients had deep vein thrombosis, two patients had superficial wound infection and one patients had recurrent cold abscess. Two patients died due to associated co-morbidities.

Based upon the clinical and radiological pre- and post-operative findings; Uncomplicated spines were managed conservatively or with abscess drainage (USG or CT – guided). Complicated spines were managed with posterior instrumentation and complex spines were managed with anterior / posterior procedure (posterior only approach)

Conclusion: Based upon the outcome of treatment of spinal tuberculosis, conservative treatment results in healing of the disease process with residual deformity while surgical treatment in selected cases results in early pain alleviation, spinal balance, neurologic protection and eventually early return to work.
Updates on 2016 CNS tumor classification - Where do we stand?
Authors: Kolakshyapati Manish , Shrestha Tejashwi , Singh Anish Man , Adhikari Rupendra Bahadur , Shrestha Prabin
Published: January 2019

The updated 2016 World Health Organization (WHO) classification of central nervous system (CNS) tumors has incorporated the molecular markers together with histological parameters in defining and diagnosing various tumor entities. This has led to major changes and revision of the classification. A number of new entities are classified based on clinical, diagnostic, and prognostic relevance and those without such relevance have been removed. Major changes are incorporated in diffuse glioma, medulloblastoma, pediatric gliomas, and other embryonal tumors. These new requisites make molecular testing a basic requirement for CNS tumor diagnosis and treatment. New treatment protocols are designed and targeted based on the genetic alteration involved in the tumor entity. The update aims to achieve accurate diagnosis, determine precise prognosis and ensure better patient treatment all through facilitating better categorization of clinical and experimental trials. The multidisciplinary team of clinicians treating such tumor patients in a developing country like Nepal should try to adopt this updated version of the classification so as to improve and upgrade the neuro-oncological services to meet the international standards.
Acute appendicitis in children: How is it different than in adults?
Authors: Dahal Geha Raj
Published: January 2019

Acute appendicitis is common in both children and adults. As children are different than adults in many aspects, the disease process, presentation, and outcome are different. Children have more complicated appendicitis. This article discusses the differences of acute appendicitis in children.
Gossypiboma can remain asym ptomatic for a long time
Authors: Pant Padam Raj , Ghimire Asmita , Subedi Nilam , Pant Samriddha Raj , Shrestha Asmita
Published: January 2019

Gossypiboma, a retained foreign body after surgery, is a rare complication. It appears years after surgery, has nonspecific symptoms, and is usually identified on imaging sequences. We present here an asymptomatic case of a 32 years old lady with a history of laparotomy done two years earlier. She was initially misdiagnosed clinically and radiologically as hydatid cyst of pelvis. During re-surgery, foreign body was detected. Postoperative period was uneventful. To prevent these types of complications, we have to follow the main principle of surgery in all procedures i.e. ensuring a proper count of surgical materials before and after surgery.
Myometrial myxoidosis: A rare case seen in a patient of primary subfertility
Authors: Subedi Nilam , Pant Padam Raj , Ghimire Asmita
Published: January 2019

Myxoid mesenchymal lesions of the uterus are generally restricted to tumors. Myometrial myxoidosis is a rare benign tumor of the uterus. We report a case of myometrial myxoidosis diagnosed postoperatively with histopathological report in a 27-year-old female with primary subfertility who had undergone myomectomy and adenomyomectomy. On gross examination the tumor was 13.5x8x2.5 cm in size. Microscopically, it showed interlacing bundles of smooth muscles intersecting each other. Sections from separate tissue showed muscle fascicles which were separated by abundant extracellular mucin producing a striking myxoid appearance (myxoidosis).

Only few cases of myometrial myxoidosis have been reported in literature. Of them, some were associated with lupus erythematosus and some with neurofibromatosis.
Reaction to robots in social and non-social contexts – comparison of children with autism spectrum disorders and their typical peers
Authors: Zubak Ivana , Kovačić Zdenko , Petric Frano , Stošić Jasmina , Cepanec Maja , Šimleša Sanja
Published: January 2019

Brojna istraživanja nastala u okviru socijalno-asistivne robotike usmjerena su na stvaranje učinkovite podrške djeci s poremećajem iz spektra autizma (PSA) kroz njihovu interakciju s robotima. Ona počivaju na premisi da djeca sa PSA-om pokazuju sklonost elektroničkim napravama, a slabiji interes za socijalne aspekte okoline. No izrazito veliki interes za elektroničke naprave u sve djece otvara pitanje reagiraju li djeca sa PSA-om na prisustvo robota drukčije od djece tipičnog razvoja. Cilj je ovog istraživanja bio usporediti reakcije djece sa PSA-om i djece tipičnog razvoja na robota u nesocijalnom (zadatak “robot-predmet” u kojem su u prostoriji prisutni robot i drugi zanimljivi predmeti) i socijalnom kontekstu (zadatak “robot osoba”; prisustvo robota i nepoznate osobe). Uzorak je činilo dvadesetero djece predškolske dobi, po 10 u svakoj skupini. Rezultati su pokazali da djeca sa PSA-om u nesocijalnom kontekstu uglavnom pokazuju podjednake obrasce ponašanja kao i djeca tipičnog razvoja, odnosno da ne postoje razlike u dužini prosječnog trajanja usmjerenosti pogleda prema robotu te dužini fizičke interakcije s robotom. Razlike su uočene tek u socijalnom aspektu – djeca tipičnog razvoja u većoj su mjeri komunicirala o robotu s roditeljem. U socijalnoj situaciji (zadatak “robot-osoba”) djeca sa PSA-om su značajno više ulazila u fizičku interakciju s robotom od djece tipičnog razvoja, dok su djeca tipičnog razvoja znatno češće usmjeravala pažnju na osobu u odnosu na djecu sa PSA-om. Zaključno obje skupine djece znatno su više pažnje usmjeravale na robota negoli na prisutnu osobu, ali je u djece sa PSA-om usmjerenost na socijalnu okolnu bila izrazito snižena. Ovi podaci ukazuju na veliku atraktivnost koju roboti predstavljaju za djecu s poremećajem iz spektra autizma i djecu tipičnog razvoja, ali i na bitnu razliku među njima koja se očituje u izostanku obrazaca socijalnog ponašanja i usmjerenosti na druge osobe u okolini koji je prisutan u djece sa PSA-om.
Psychological diagnosis and quantitative electroencephalography analysis in cognitive rehabilitation for people with Down syndrome
Authors: Lubińska-Kościółek Elżbieta , Zielińska Jolanta , Wołoszczuk Krzysztof
Published: January 2019

U radu se predstavlja mogućnost primjene QEEG-a u psihološkoj obradi osoba s Downovim sindromom. Primijenjeni su testovi Mitsar EEG 202 i SON-R (2.5-7). U ispitivanju je sudjelovalo dvadeset ispitanika s Downovim sindromom. Detaljno su analizirani rezultati osamnaestogodišnje muške osobe. Rezultati su uputili na prenaglašenu ekspresivnost, posebice theta valova (4-6 Hz) registriranih u čeonom i tjemenom režnju. Podaci prikupljeni tijekom psihološke obrade potvrđuju iste rezultate QEEG-a kod pacijenta. Također iznose se pretpostavke neurofeedback-treninga i tipova zadataka koji bi se trebali upotrebljavati u kognitivnoj rehabilitaciji.
Studentska percepcija invaliditeta kroz prizmu socijalne distance, životnih vrijednosti i poštovanja
Authors: Klarin Mira , Šimić Šašić Slavica , Sučić Šantek Ivana
Published: January 2019

Cilj ovog istraživanja bio je ispitati percepciju socijalne distance, životnih vrijednosti I poštovanja prema različitim skupinama studenata s invaliditetom. U tu svrhu proveli smo istraživanje na 473 studenta primjenom sljedećih mjernih instrumenata konstruiranih za potrebe ovog istraživanja: Skala socijalne distance koja mjeri spremnost studenta da prihvati određenu vrstu socijalnog odnosa sa studentom koji ima određeni invaliditet, Skala poštovanja osoba s invaliditetom i Inventar životnih vrijednosti. Rezultati ovog istraživanja upućuju na zaključak da je prihvaćanje osoba s invaliditetom na razini prijateljstva. Također vidljivo je da studenti imaju najveću distancu prema studentima koji imaju psihičkih teškoća. Studentice su spremnije sklopiti bliskiji odnos sa studentom koji ima oštećenje vida i/ili sluha u odnosu na studente. U ostalim procjenama socijalne distance nema statistički značajne razlike između studentica i studenata. Također studentice pokazuju veće poštovanje prema osobama s invaliditetom. Studenti koji imaju naglašenije životne vrijednosti koje se odnose na brigu za druge i studenti koji imaju veće poštovanje prema studentima s invaliditetom, ujedno izražavaju manju socijalnu distancu. Zabilježene su spolne razlike i u životnim vrijednostima neovisnosti i odgovornosti i brige za druge u smjeru većih vrijednosti kod studentica. Spolne razlike interpretirali smo u skladu s teorijom socijalizacije i teorijom evolucije.
ANALISISPENGARUHMANAJEMENLABA TERHADAPRETURNSAHAMPADA PERUSAHAAN PERTAMBANGANDAN PERUSAHAAN MANUFAKTUR DI BURSA EFEK INDONESIA
Authors: Zuhri Mokhamad Syaifudin , Mas Nasharuddin
Published: January 2019

Tujuan penelitian ini adalah untuk menganalisis pengaruh manajemen laba terhadap return saham pada perusahaan pertambangan dan perusahaan manufaktur yang go public di Bursa Efek Indonesia dan untuk menganalisi sperbedaan antara return pada perusahaan pertambangan dan perusahaan manufaktur di BEI.

Sampel penelitian ini sebanyak 29 perusahaan, terdiri 6 perusahaan pertambangan dan 23 perusahaan manufaktur yang go publik di Bursa Efek Indonesia, dengan metode pooling data (2012-2014), sehingga jumlahsampel (n) = 87. Pengambilan sampel menggunakan metode purposive sampling yaitu pengambilan sampel dengan kriteria-kriteria yang ditetapkan.

Hasil penelitian bahwa secara parsial (individu) tidak terdapat pengaruh yang signifikan manajemen laba terhadap return saham, baik perusahaan pertambangan dan perusahaan manufaktur. Hal ini mengindikasikan bahwa besar kecilnya manajemen laba yang dilakukan pihak manajemen perusahaan tidak berpengaruh signifikan pada kenaikan return saham perusahaan. Pada uji chowtes t diperoleh nilai F hitung sebesar 12,10 lebih besar dibandingkan F tabel taraf signifikansi 5% sebesar 7,88 sehingga diperoleh hasil ada perbedaan yang signifikan return saham perusahaan pertambangan dan perusahaan manufaktur. Kecenderungan tindakan manajemen laba (rata-rata nilai diskresionerakrual) pada perusahaan pertambangan sebesar 0,0040 sedangkan tindakan manajemen laba (rata-rata nilai diskresionerakrual) pada perusahaan manufaktur sebesar 0,0058 yang menunjukkan bahwa perusahaan pertambangan lebih kecil kecenderungan melakukan manajemen laba dibandingkan dengan perusahaan manufaktur.

Kata Kunci: Manajemen Laba, Return Saham, Pertambangan, Manufaktur
PERANCANGAN MESIN PENGADUK SAS ( BAHAN POKOK ) GAS AIR MATA
Authors: Subagiyono Agus , Finahari Nurida
Published: January 2019

Perusahaan industri alat utama sistem pertahanan (alutsista) adalah perusahaan yang memproduksi produk militer dan produk komersial, Salah satu mesin yang ada di perusahaan industri alutsista adalah mesin pengaduk SAS (bahan pokok) gas air mata. Mesin ini berfungsi mencampurkan SAS gas air mata yang menghasilkan bahan pokok gas air mata yang homogen. Masalah yang timbul dalam pembuatan bahan pokok gas air mata ini untuk mencapai hasil yang homogen adalah masih manual, yaitu dengan pencampuran bahan pokok secara langsung oleh operator. Akibatnya sistem produksi tidak bisa bekerja secara optimal karena memerlukan waktu yang lama, kapasitas berkurang dan resiko bahaya lebih tinggi terhadap operatornya. Demi terwujudnya proses yang aman dan homogen maka diperlukan perancangan mesin pengaduk SAS gas air mata. Perancangan ini menggunakan metode Pahl and Beitz. Proses perancangan sistem yang digunakan secara garis besar terdiri dari tahap-tahap : Penjabaran Tugas, Perancangan dengan Konsep, Perancangan Wujud, dan Perancangan Secara Terperinci. Dengan mengikuti alur tahapan perancangan, didapatkan 5 varian desain yang dievaluasi mengikuti 9 kriteria. Hasil evaluasi menjadi dasar untuk memilih varian 2 sebagai desain terbaik untuk mesin pengaduk, yaitu menggunakan tangki horisontal, pengaduk screw, transmisi gear box dan penggerak motor listrik. Analisis teknis terhadap varian ini menghasilkan faktor keamanan 93,86 sehingga dapat dinyatakan layak dan aman untuk beroperasi pada kapasitas produksi 360 ton/shift. Kata Kunci : Alutsista, SAS, Gas Air Mata, Metode Perancangan Pahl and Beitz, Homogen.
ANALISIS UJI TARIK DAN METALOGRAFI SIFAT MEKANIK BESI TUANG KELABU (FC-20) DENGAN PROSES HEAT TREATMENT
Authors: De Jesus Adriano Da Silva , Soebiyakto Gatot
Published: January 2019

Perkembangan ilmu pengetahuan dan teknologi saat ini membawa dampak yang begitu besar bagi perkembangan teknologi,seiring dengan kemajuan dunia industri, terutama industri di bidang otomotif dan permesinan. Berbagai kebutuhan terhadap material yang beraneka ragam telah memaksa manusia untuk berinovasi,. Sehingga material logam yang paling banyak digunakan di dunia industri adalah baja, karena baja memiliki keunggulan yaitu kekuatan yang tinggi, kemampukerasan yang baik dan relatif ulet. Pada perkembangannya penggunaan material baja diimbangi dengan semakin banyaknya pengunaan material besi cor. Hal ini terjadi karena besi cor memiliki beberapa keunggulan dibandingkan baja, yaitu merupakan bahan yang relatif murah, memiliki sifat mampu cor (castability) yang baik, dan juga memiliki sifat mampu mesin (machinability) yang relatif lebih baik dibandingkan dengan baja. Maka penelitian ini bertujuan untuk mengetahui peningkatan sifat mekanik gray cast iron ( FC-20) terhadap kekuatan tarik dan struktur makro dengan proses heat treatmant. Penelitian ini menggunakan besi cor kelabu FC 20, dengan pengujian pertama yaitu quenching metode pendinginan air garam , pendinginan air es dan pendinginan oli terhadap nilai kekuatan tarik dan struktur makro besi cor kelabu FC 20. Variasi temperatur pemanasan yang digunakan sebesar 6000C-7500C dengan penahanan waktu selama 45 menit/ 1 jam. Pengujian kedua sebagai pembanding dengan variasi besi cor kelabu FC 20 tanpa perlakuan. Hasil penelitian menunjukkan bahwa pada besi cor kelabu FC 20 di dapatkan hasil yang berbeda-beda, yaitu dimana pada besi cor FC-20 tanpa perlakuan lebih cenderung mengalami penurunan kekuatan tarik yaitu dengan jumlah harga rata-rata nilai kekuatan tarik tertinggi sebesar 23.14 kgf/mm2 dan nilai regangan lebih tinggi yaitu 10,23% sedangkan pendinginan air garam lebih cenderung mengalami kenaikan kekuatan tarik yang sangat tinggi yaitu dengan jumlah harga rata-rata nilai kekuatan tarik tertinggi sebesar 30.23 kgf/mm2 dan mengalami penurunan nilai regangan yaitu sebesar 1.7%, sedangkan pada variasi pendinginan air es memiliki rata-rata nilai kekuatan tarik tertinggi sebesar 27.75% kgf/mm2 dan mengalami kenaikan regangan yaitu sebesar 1.8% . sedangkan pada variasi pendinginan oli hasil kekuatan tariknya naik lebih tinggi bila dibandingkan dengan pendinginan air es yaitu dengan rata rata nilai kekuatan tarik tertinggi sebesar 29 kgf/mm2 dan mengalami penurunan regangan yaitu sebesar 1.6%.  Kata kunci: Besi cor kelabu, Quenching, dan struktur makro
Kemampuan Pembuktian Matematis Mahasiswa Menggunakan Induksi Matematika
Authors: Firmasari Siska , Sulaiman Herri
Published: January 2019

Kemampuan mahasiswa dalam melakukan pembuktian matematis tidak sama bergantung dari kategori kognitifnya. Salah satu metode pembuktian matematika adalah induksi matematika yang memerlukan pemahaman konsep secara sistematis. Tujuan penelitian adalah untuk mengetahui kemampuan pembuktian matematis mahasiswa yang memiliki kategori kognitif tinggi dan rendah menggunakan induksi matematika. Subjek penelitian ini adalah empat orang mahasiswa tingkat tiga Program Studi Pendidikan Matematika dengan klasifikasi dua orang mahasiswa memiliki kemampuan kognitif tinggi dan dua mahasiswa berkemampuan rendah. Instrumen penelitian yang digunakan adalah lembar tes materi induksi matematika dan pedoman wawancara. Penelitian ini merupakan penelitian deskriptif yang mendeskripsikan kemampuan pembuktian matematis mahasiswa dalam menyelesaikan soal terkait induksi matematika disesuaikan dengan kemampuan kognitif tinggi dan rendah. Hasil penelitian menunjukkan bahwa mahasiswa dengan kategori kognitif tinggi mampu menyelesaikan setiap langkah pembuktian secara benar namun belum sistematis, sedangkan yang berkemampuan kognitif rendah tidak memahami alur pembuktian pada langkah induksi, kekeliruan memahami sifat distributif, dan ketidakteraturan menghubungkan setiap langkah pembuktian. Melalui artikel ini, peneliti berharap dapat menganalisis perlakuan yang tepat pada mahasiswa saat mengajar berbagai materi matematika yang menggunakan prasyarat induksi matematika.

Kata kunci: pembuktian matematis, induksi matematika, kemampuan kognitif.

 

ABSTRACT

The students’ ability to perform mathematical proof is different depending on their cognitive category. One of mathematical proofing is mathematical induction which requires concepts understanding systematically. The purpose of this research is to know the ability of mathematical proof using mathematical induction of high and low cognitive category students. The subjects of this study are four third graders of Mathematics Education Study Program. Two students have high cognitive ability and the others have low cognitive ability. The mathematical induction material test sheet and interview guideline are used as research instruments. This is a descriptive research which describes the mathematical proof ability of students in solving problems related to mathematical induction adjusted with high and low cognitive ability. The results show that students with high cognitive category are able to complete each step of proof correctly but not systematically. At the same time, the students with low cognitive ability are not understand the proof steps at the induction step, the misunderstood the distributive property, and the irregularity connect the proof steps. The researcher expects to analyze the appropriate treatment to the students while teaching mathematical materials using mathematical induction prerequisites.

Keywords: mathematical proof, mathematical induction, cognitive ability.
Penerapan Reciprocal Learning untuk Melatih Kecakapan Akademik Mahasiswa pada Mata Kuliah Sejarah Matematika
Authors: Warmi Attin , Adirakasiwi Alpha Galih , Efendy Kiki Nia Sania
Published: January 2019

Penelitian ini bertujuan untuk mengetahui pencapaian kecakapan akademik dan gambaran tingkat kecakapan akademik mahasiwa dalam mata kuliah sejarah matematika dengan menggunakan reciprocal learning. Subjek dalam penelitian ini adalah mahasiswa semester dua kelas C sebagai kelas control dan kelas F sebagai kelas eksperimen. Pengumpulan data dilakukan dengan tes uraian kecakapan akademik dan observasi. Desain yang digunakan dalam penelitian ini adalah desain kelompok kontrol tidak ekuivalen (the nonequivalent control group design). Selain menggunakan desain penelitian tersebut, penelitian ini juga mengadopsi penelitian campuran (mixed method) dengan desain sequential explanatory. Hasil tes kecakapan akademik mahasiwa kelas eksperimen dan kelas kontrol berturut-turut yaitu 85,24 dan 66,75. Berdasarkan hasil uji statistik, kecakapan akademik mahasiswa yang menggunakan reciprocal learning lebih baik dibandingkan dengan pembelajaran konvensional. Berdasarkan analisis data hasil kecakapan akademik dari delapan pertemuan menunjukkan nila rata-rata kemampuan kecakapan akademik mahasiswa pada kelas eksperimen adalah 80,58 dan tergolong dalam kategori tinggi, yang terdiri dari empat aspek yaitu mengidentifikasi variabel 91,81; menghubungkan variabel 74,03; merumuskan hipotesis 72,74; dan melaksanakan penyelidikan 83,73. Kesimpulannya, Reciprocal Learning dapat melatih kecakapan akademik mahasiswa dalam dalam mata kuliah sejarah matematika.

Kata kunci: kecakapan akademik, reciprocal learning, sejarah matematika.

 

ABSTRACT

The aim of this study is to determine the achievement of academic skills and to overview the students’ academic skills level in history of mathematics course with reciprocal learning. Subjects in this study were second semester students of C class as the control class and F class as the experimental class. Data was collected by essay test of academic skills and observations. The design used in this study is the nonequivalent control group design. In addition, this study also adopted a mixed method with sequential explanatory design. The results of the students’ academic achievement in experimental class and control class, respectively, were 85.24 and 66.75. Based on the results of statistical tests, the academic achievement of students who used reciprocal learning was better than students who used conventional learning. Based on the analysis of observation in eight meetings, the average score of the ability of students’ academic skills in experimental class was 80.58 and it belonged to the high category, which consisted of four aspects, namely identifying variables with 91.81, connecting variables with 74.03, formulating hypotheses with 72.74, and carry out investigations with 83.73. So, reciprocal learning can train students’ academic skills in learning and it can be seen from the better obtained results.

Keywords: academic skills, reciprocal learning, mathematics history.
Implementasi Self Regulated Flipped Classroom pada Mata Kuliah Kalkulus
Authors: Setyawan Fariz , Istiandaru Afit
Published: January 2019

Target yang ingin dicapai dalam penelitian ini adalah mendeskripsikan sejauh mana pendekatan SRFC mampu membuat mahasiswa program studi pendidikan matematika Universitas Ahmad Dahlan (UAD) belajar mandiri. Paradigma baru yang berkembang di perguruan tinggi menuntut pembelajaran harus mampu memandirikan mahasiswa dalam belajar (self regulated learning). Pendekatan pembelajaran yang secara teori berpotensi mampu memfasilitasi belajar mandiri adalah pendekatan SRFC. Penelitian ini menggunakan pendekatan deskriptif kualitatif. Bedasarkan hasil penelitian, penulis berharap pendekatan Self Regulated Flipped Classroom (SRFC) tidak hanya diterapkan pada mata kuliah Kalkulus diferensial saja melainkan dapat menjadi rujukan pada mata kuliah lain. Adapun pelaksanaan SRFC dari sisi kognitif masih memiliki kekurangan dimana mahasiswa belum terlibat aktif dalam melakukan refleksi berpikir selama pembelajaran, namun mahasiswa lebih terlibat aktif dalam sisi intepretasi. Selain itu, motivasi dan perilaku mahasiswa cenderung positif selama menggunakan pendekatan pembelajaran SRFC. Hal ini dikarenakan adanya dukungan dari pengajar dan teman sejawat serta interaksi selama pembelajaran berlangsung.

Kata kunci: kalkulus, SRFC, kemandirian belajar.

 

ABSTRACT

This research aims to describe the SRFC approach through self regulated indicators and the result of the study of college students in Universitas Ahmad Dahlan. The new paradigm related to Higher Level Education strive for students whom can independently get their own knowledge. SRFC has a potential method to make the students study independently. This research is using qualitative descriptive approach. Based on the result, the author recommend to used SRFC approach not only implemented in Calculus Diferential course but also the other subject. As far as the SRFC activities, cognitive domain hasn’t actively contributed in teaching and learning process because the students havent involve their reflection in learning the subject. However, their intepretation of the subject is actively involved better. In addition, the motivation and the attitude of the students is positive in using SRFC approach. It is because there are support from the teacher and their collegaues and their interaction while they were studying.

Keywords: calculus, self-regulated learning, mastery learning.
Časopis Blagovest u razdoblju 1946.–1950.
Primjer položaja Katoličke crkve i vjerskog tiska u komunističkoj
Jugoslaviji
Authors: Borna Jurčević Jurij
Published: January 2019

U razdoblju nakon Drugog svjetskog rata na području Jugoslavije Katolička crkva našla se u vrlo nezavidnom položaju. Totalitarni komunistički režim uveo je mnoge represivne mjere kako bi pokušao spriječiti utjecaj koji je Crkva imala među narodom. Časopis Blagovest bio je tako jedna od rijetkih crkvenih tiskovina koje su izlazile na prostoru Jugoslavije. U ovom radu opisan je položaj Katoličke crkve u jugoslavenskom komunističkom režimu, a potom su analizirani tekstovi i poruke izneseni u časopisu Blagovest tijekom prvih pet poslijeratnih godina (1946.–1950.). U radu su navedeni tehnički, grafički i urednički podatci, prikazan je izgled časopisa, način pisanja, broj stranica, cijena, urednici, ritam izlaženja i mjesto izdavanja te niz promjena koje su se događale tijekom poslijeratnog razdoblja.
Lymphocyte subsets and their association with the severity of patients with major depressive disorder (mdd)
Authors: Mohd Ashari Noor Suryani , Mohamed Sanusi Siti Nor Fairus , Mohd Yasin Mohd Azhar , Mohamud Rohimah , Che Hussin Che Maraina
Published: January 2019

Introduction: Major Depressive Disorder (MDD) isexpected to become the second leading cause of worldwide disability by the year 2020 and the major contributor to the overall global burden of disease.Objective: This study was done to compare sociodemographicpredisposingfactors in MDD patients and controls in Kelantan, Malaysia.Methods: A total of 47 MDD patients and 47 healthy controls participated in this study. MDD patients were recruited from Psychiatric Clinic, HUSM and they were diagnosed according to DSM-V criteria. Patients’ biodata, medical and psychiatric history were taken by physician. Data were analysed using Pearson Chi-square and multiple logistic regression.Results: In MDD group, 61.7% were females and 38.3% were males. Forty two percent of MDD were in the age group of 45 to 65 years old and almost 12.8% of MDD patients had family history of depression, while all healthy controls were in good general health and had no family history of depression. Pearson Chi-square revealed that there were significant associations between smoking status (P=0.027), marital status (P=0.007) educational level (P=0.022) and area of living (P=0.0.036) with MDD. The results showed that unmarried person were less likely to have MDD compared to those married with adjusted odds ratio (OR) of 0.31. Smoker were 5.16 at odds of having MDD as compared to non-smoker, while individuals with a low education were more likely to have MDD compared to those highly educated with adjusted OR of 2.04. The result also showed those living in urban area were less likely to have MDD compared to those living in rural area with adjusted OR of 0.48.Conclusion: Higher age, female and positive family history possess a higher tendency of having MDD. In addition, smokers, married, less educated and living in rural area were more likely to have MDD compared to healthy controls.International Journal of Human and Health Sciences Vol. 03 No. 02 April’19. Page: 80-87
The Analysis of Sub-saharan African Surgical Sublications
Authors: Alımoglu Orhan , Colapkulu Nuray , Leblebici Ihsan Metin
Published: January 2019

Objectıve: Medical education and health have been accelerated in Sub-Saharan Africa (SSA) over the years, however scientific contrubition of SSA is not adequate. The aim of this study is to document the studies published by scientists from SSA.Method: This study was conducted via searching the database of PubMed by using the words “Sub-Saharan Africa AND Surgery”, between 01.01.2016 and 31.12.2016.Results and dıscussıon: A total of 582 articles were found and reviewed. Irrelevant 305 (52%) articles were excluded. There were 277 (48%) surgical articles and 82 (30%) of the studies were conducted in the field of general surgery which were reviewed for this study. Fourty-two (51%) articles were published by local scientists from 15 SSA countries; 15 (18%) articles by the researhers outside of Africa and 25 (30%) articles were collaboration studies between African and western countries. Twenty (24%) articles were published in African based journals whereas 62 (76%) were published in international journals. The most common topics among articles were gastrointestinal system diseases, trauma and breast cancer, respectively.Conclusıons: In conclusion the number and subjects of publications held by local scientists is inadequate, and therefore, scientific researhers should be supported.International Journal of Human and Health Sciences Vol. 03 No. 02 April’19. Page: 101-104
Patellofemoral Pain: A Not So Trivial Knee Injury (A Case Report)
Authors: Rashid Aneesa Abdul , Devaraj Navin Kumar , Kahar Johan Abdul
Published: January 2019

Knee injuries are very common in sports, ranging from trivial knee strains to severe ligament, tendon and/or meniscus tear, knee joint fracture or dislocations. The treatment ranges from the basic rest, ice, compression and elevation (RICE) approach to oral medications and/or surgery. It usually entails some form of physiotherapy especially during the post injury period and with functional loss of motion or stiffness. For the professional sportsman, rehabilitation tends to be more intensive due to pressure to return to the sport as soon as possible. This case report will look at a-not-so-trivial knee injury diagnosed as patellofemoral pain syndrome (PFPS) in a 28 year old recreational athleteInternational Journal of Human and Health Sciences Vol. 03 No. 02 April’19. Page: 120-122
The Relationship Between Work-Life Balance Initiatives and Organizational Citizenship Behavior: The Mediating Role of Perceived Organizational Support
Authors: Shakir Khurram , Siddiqui Siraj Jamal
Published: January 2019

Work-Life initiatives refer to the organizational policies that helps an employee to create balance between his/her professional and personal life, whereas organizational citizenship behavior (OCB) refers to the voluntary behavior on part of the employee taking on additional responsibilities apart from their usual job descriptions developing a sense of ownership towards their workplace. The primal objective of this study is to explore whether work-life balance initiatives in any way influence organizational citizenship behavior and employees’ perception of such initiatives taken by their organizations and if such measures create a sense among workers to go beyond their duties at work. The purpose of this study is to test causal relationship among the studied variable. The primary data from 540 sample size selected through convenience sampling by using survey questionnaire from a number of banking and telecom companies of Pakistan. The data was analyzed through confirmatory factor analysis (CFA) technique and path analysis. The outcomes of the study show that relationship between Work-Life Balance (WLB) and Organization Citizenship Behavior (OCB) is fully mediated by Perceived Organizational Support (POS) which also highlighted the crucial role of Perceived Organizational Support (POS). The results of the study indicate that work-life balance practices have no direct effect on organizational citizenship behavior, while perceived organizational support shows full mediation between WLB and OCB and this suggest to the Work-Life Balance (WLB) practitioners that providing work-life balance options are not enough to get desirable results but the fairness and availability of such options across the organization are mandatory to achieve Organization Citizenship Behaviour (OCB).
Triage des patients à l’accueil d’une structure d’urgences. Présentation de l’échelle de tri élaborée par la Société française de médecine d’urgence : la FRench Emergency Nurses Classification in Hospital (FRENCH)
Authors: Taboulet P. , Maillard-Acker C. , Ranchon G. , Goddet S. , Dufau R. , Vincent-Cassy C. , Yordanov Y. , El Khoury C.
Published: January 2019

La Société française de médecine d’urgence
(SFMU) a recommandé la création d’une échelle spécifique, unique au niveau national, pour le triage des patients à l’accueil d’une structure d’urgences, prenant en compte les spécificités de l’adulte et de l’enfant. La commission de l’évaluation et de la qualité de la SFMU a créé, à l’instar des échelles de tri internationales, une échelle de tri avec cinq niveaux de priorité croissante (tris 5 à 1, du moins urgent au plus urgent) auxquels correspondent des motifs de recours aux soins de complexité/sévérité croissante. Le tri 3 a été subdivisé en deux groupes pour distinguer (et prioriser) les patients qui ont au moins une comorbidité en rapport avec le motif de recours aux soins ou qui sont adressés par un médecin (3A) des autres patients (3B). L’échelle de tri FRENCH (FRench Emergency Nurses Classification in Hospital) a donc six niveaux de priorité. À chaque niveau de tri correspondent des motifs de recours aux soins fréquents en médecine d’urgence, des modulateurs de tri, une répartition rationnelle des circuits patients et un délai maximum d’attente avant prise en charge médicale, après évaluation par l’infirmier(ière) d’accueil. Une première évaluation de la FRENCH a montré qu’elle répondait aux objectifs du triage en facilitant le repérage de l’urgence complexe/sévère de façon fiable et reproductible. De nouvelles évaluations sont nécessaires dans d’autres structures d’urgences pour confirmer sa performance et favoriser son évolution.
OIL AND GAS SYSTEMS, COAL ARE COMPONENTS OF HYDROCARBON SPHERE OF THE EARTH
Authors: Lur’e M. A.
Published: January 2019

Comparison of elemental compositions of oil, coal and biomaterial has shown that a source of oil and gas systems and coal is mainly not biomass, but the deep abiogenic hightemperature fluids representing a mixture of light hydrocarbon, sulfur, metal-containing structures, etc. In the course of the fluids movement towards the Earth’s surface, hydrocarbon under catalytic action of sulfur and metals undergoes polycondensation transformations to afford hydrocarbons of various types and molecular mass, sulfur- and organometallic compounds. Formation of a hydrocarbon system depends on a structure of the fluid.