Perilaku Agresif Dan Penanganannya (Studi Kasus Pada Siswa SMP Negeri 8 Makassar)

Tujuan penelitian ini adalah (i) untuk mengetahui mengetahui bentuk perilaku agresif siswa di SMPN 8 Makassar. (ii) mengetahui faktor-faktor yang mempengaruhi perilaku agresif siswa di SMPN 8 Makassar. (iii) mengetahui dampak perilaku agresif bagi prestasi belajar dan hubungan dengan teman sebaya siswa di SMPN 8 Makassar. (iv) bentuk penanganan perilaku agresif siswa di SMPN 8 Makassar. Jenis penelitian ini adalah studi kasus. Pengumpulan data melalui wawancara, observasi dan dokumentasi. Data yang diperoleh dianalisis dengan analisis deskriptif kualitatif. Hasil penelitian; (i) bentuk perilaku agresif siswa adalah perilaku agresif fisik seperti memukul, membanting pintu, membanting meja, menyenggol, melempar, memukul meja, mendorong, dan menyentil telinga. Bentuk perilaku agresif verbal seperti mengancam, membentak, memaki, menghina, mengejek, berteriak dan memanggil dengan sebutan buruk. (ii) faktor yang memengaruhi perilaku agresif adalah (a) pengalaman masa kecil, (b) perlakuan buruk orangtua, (c) dukungan dari orangtua dan teman sebaya, (d) peran model kekerasan yang dilihat dari orangtua, teman sebaya, dan kebiasaan nonton TV dan main game yang beradegan kekerasan, (e) amarah yang tak terkontrol, (f) frustasi karena selalu gagal dalam mencapai tujuan. (iii) dampak perilaku agresif yaitu prestasi belajar rendah dan hubungan sosial dengan teman sebaya yang tidak baik dan (iv) bentuk penanganan perilaku agresif melalui teknik psikodrama

Analysis of gut microbiota-derived extracellular vesicles isolated from newly diagnosed multiple sclerosis patients

Abstract. Multiple sclerosis (MS) is an autoimmune disease of the central nervous system. MS is characterized by a gradual loss of neuronal cells, leading to physical and cognitive impairment over time. The gut microbiota has been suggested to be an important environmental factor in MS, but the mechanism of action is vastly unknown. We suggest that production of extracellular vesicles (EVs) is one mechanism how the gut microbiota is able to influence host physiology in health and disease. In this work, EVs were isolated from fecal samples of 16 newly diagnosed MS patients and 18 healthy controls. The object was to determine the protein composition of EVs but the final analysis was hindered due to unfortunate events caused by SARS-CoV-2 pandemic. Nanoparticle tracking analysis of EVs showed that concentration and size distribution of EVs was similar between MS patients and healthy controls. Additionally, this work accomplished to show that as low as 100 mg of fecal material was sufficient for EV isolation, which can be used to improve EV isolation practicalities

Modeling heat transfer from quench protection heaters to superconducting cables in Nb3Sn magnets

We use a recently developed quench protection heater modeling tool for an analysis of heater delays in superconducting high-field Nb3Sn accelerator magnets. The results suggest that the calculated delays are consistent with experimental data, and show how the heater delay depends on the main heater design parameters.Comment: 8 pages, Contribution to WAMSDO 2013: Workshop on Accelerator Magnet, Superconductor, Design and Optimization; 15 - 16 Jan 2013, CERN, Geneva, Switzerlan

Efficient hedging in Bates model using high-order compact finite differences

We evaluate the hedging performance of the scheme developed in B. Düring, A. Pitkin, ”High-order compact finite difference scheme for option pricing in stochastic volatility jump models”, 2017. We compare the scheme’s hedging performance to standard finite difference methods in different examples. We observe that the new scheme achieves fourth-order convergence, outperforming a standard, second-order central finite difference approximation in all our experiments

Preoperative Diagnosis of Xanthogranulomatous Cholecystitis

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Microstructure and Residual Stress Evolution of Laser Powder Bed Fused Inconel 718 under Heat Treatments

The current work aimed to study the influence of various heat treatments on the microstructure, hardness, and residual stresses of Inconel 718 processed by laser powder bed fusion process. The reduction in residual stresses is crucial to avoid the deformation of the component during its removal from the building platform. Among the different heat treatments, 800 °C kept almost unaltered the original microstructure, reducing the residual stresses. Heat treatments at 900, 980, and 1065 °C gradually triggered the melt pool and dendritic structures dissolution, drastically reducing the residual stresses. Heat treatments at 900 and 980 °C involved the formation of δ phases, whereas 1065 °C generated carbides. These heat treatments were also performed on components with narrow internal channels revealing that heat treatments up to 900 °C did not trigger sintering mechanisms allowing to remove the powder from the inner channels

The “Open Innovation” paradigm: A contingency perspective

The “open innovation” model is currently being touted as a superior path for achieving long-term success. Rather than relying on their own, limited resources for research and development in the traditional, closed invention system, firms are encouraged to share knowledge across firm boundaries to enhance their innovative potential. Yet, such sharing may also have adverse consequences by reducing the rarity of a firm’s inventions. This paper accordingly attempts to identify and analyze the parameters that determine whether open or closed types of innovation management are most appropriate for a given firm. Following a contingency perspective, we examine these determinants as various internal and external constraints (situational factors). More specifically, applying concepts related to absorptive capacity, complementary resources, game theory and others, we derive testable propositions and provide case study evidence regarding the value generating properties of open innovation.Peer Reviewe

Suolistomikrobien vaikutus aivojen toimintaan maha-aivo-akselin välityksellä

Tiivistelmä. Mikrobiomi-maha-aivo-akseli on suolistomikrobien ja aivojen kaksisuuntainen kommunikaatiosysteemi, jonka välityksellä suolistomikrobit kykenevät vaikuttamaan aivojen toimintaan. Suolistomikrobit hyödyntävät signaloinnissa hermostoa, immuunisysteemiä ja verenkiertoa. Suolistomikrobit tuottavat molekyylejä, kuten hermovälittäjäaineita, lyhytketjuisia rasvahappoja ja tryptofaanin johdannaisia, jotka voivat vaikuttaa hermojen toimintaan suoraan tai hermoihin kytköksissä olevien suoliston solujen välityksellä. Suolistomikrobien tuottamat lyhytketjuiset rasvahapot imeytyvät suolistosta vereen ja kulkeutuvat aivoihin. Lyhytketjuiset rasvahapot vaikuttavat veri-aivoesteen läpäisevyyteen ja geenien ilmentymiseen aivoissa, millä voi olla käytökseen ja sairauksiin liittyviä vaikutuksia. Suolistomikrobit vaikuttavat tryptofaanin aineenvaihduntaan, kuten serotoniinin synteesiin sekä kynureniinireittiin. Suolistomikrobien on havaittu olevan osallisina mielenterveyden häiriöissä, autismikirjossa sekä neurodegeneratiivisissa sairauksissa. Probiooteilla eli nautittavilla bakteerivalmistella on havaittu olevan hyötyä näiden sairauksien hoidossa. Probiootteja voidaan tulevaisuudessa käyttää uutena hoitomuotona moniin sairauksiin. Probioottien vaikutusmekanismeista sekä turvallisuudesta tarvitaan kuitenkin lisää tietoa