Evaluación de la competencia de pensamiento matemático en profesores universitarios

Lately, private sectors and industries always give feedback that graduates nowadays cannot think, cannot speak well and lack soft skills. Some university graduates fail to perform in their work because they have poor problems-solving skills. Many researchers and educators have started studying the root of the cause. Various reports have shown that most of the graduates”™ lack problem solving skills and communication skills. Besides, they also lack thinking skills. One of the thinking skills that graduates lack is mathematical thinking. This study examined whether level of mathematical thinking of college instructors are adequate to educate and produce mathematical thinker. A total of 128 college lecturers from a local university have been chosen to participate in this study. The result of this study unveiled that the achievements of the lecturers are below average. They did not perform well in the mathematical thinking test.Hay cierta tendencia en el sector privado y las industrias que se hace eco de que los graduados de hoy en dí­a no pueden pensar, no pueden hablar bien y carecen de habilidades sociales. Algunos graduados universitarios no se desempeñan en su trabajo porque tienen pocas habilidades para resolver problemas. Muchos investigadores y educadores han comenzado a estudiar la raí­z de la causa. Varios informes han demostrado que la mayorí­a de los graduados carecen de habilidades de resolución de problemas y de comunicación. Además, también carecen de habilidades de pensamiento. Una de las habilidades de pensamiento de las que carecen los graduados es el pensamiento matemático. Este estudio examina si el nivel de pensamiento matemático de los instructores universitarios es adecuado para educar y producir un pensador matemático. Un total de 128 profesores universitarios de una universidad local han sido elegidos para participar en este estudio. El resultado de este estudio reveló que los logros de los profesores están por debajo del promedio. No tuvieron un buen desempeño en la prueba de pensamiento matemático

Current status of acute hepatopancreatic necrosis disease (AHPND) of farmed shrimp in Malaysia

A report about a disease problem in cultured whiteleg shrimp (Penaeus vannamei) was first received by the National Fish Health Research Center (NaFisH) in 2011 from Perak State showing signs of white feces and slow death leading to serious mortality rate. Later, in September of the same year, the Malaysian Shrimp Farmers Association (MSFA) reported to Department of Fisheries (DOF) severe mortalities in almost all of the whiteleg shrimp farms throughout Peninsular Malaysia. Sampling of shrimps for disease diagnosis was then conducted by NaFisH. The bacteriological and histopathological examinations revealed respectively the isolation of V. parahemolyticus and massive sloughing of hepatopancreatic epithelial cells. The disease was subsequently identified as acute hepatopancreatic necrosis disease (AHPND). From our 3-year study, the annual prevalence rates of AHPND were 50%, 26% and 73% in 2011, 2012 and 2013, respectively. At present, AHPND still persists in Malaysia but at a lower prevalence. The risk factors associated with the disease were studied, however, varied environmental and management data analyzed were inconclusive to relate any one parameter directly to the disease. To help ensure the early detection of AHPND, an experimental observation study on `gut scorecard was carried out and this was confirmed by PCR and histopathology. Validation of this technique has yet to be carried out to ensure its reliability. We also examined the potential use of some commercial products such as probiotics and disinfectants available in the market but unfortunately results showed that they were not effective in controlling AHPND. Control measures applied by the farmers such as the use of probiotics were also verified but data generated likewise appeared to be inconclusive. On the contrary, our preliminary study on the antibacterial property of the plant extracts, i.e. betel and lemongrass, incorporated in the feed showed some prophylactic and chemotherapeutic potential against AHPND. However, comprehensive in vitro and in vivo trials are still currently being undertaken to elucidate its efficacy and practical applications. To ensure the shrimp industry s sustainability in Malaysia, results of our ongoing and future studies aimed at preventing and controlling unwarranted outbreaks of AHPND and other emerging transboundary diseases of penaeid shrimps will be continually disseminated to shrimp farmers and pertinent stakeholders

Ownership of ESG Characteristics

A portfolio can be viewed as the collection of the businesses, policies and practices of constituent companies. We measure investors\u27 Ownership of this collection. Ownership metrics aggregate an assortment of company specific Environmental, Social and Governance (ESG) characteristics to the portfolio level, and they can inform investment and engagement decisions. Relative to a benchmark, investor Ownership is active and satisfies a zero-sum property, which underscores the distinction between Ownership and impact. Ownership of ESG characteristics may be interpreted as ascribing ethical responsibility, but that conclusion and any decisions that result from it belong to the investor

On identifying the neutron star that was born in the supernova that placed 60Fe onto the Earth

Recently, 60Fe was found in the Earth crust formed in a nearby recent supernova (SN). If the distance to the SN and mass of the progenitor of that SN was known, then one could constrain SN models. Knowing the positions, proper motions, and distances of dozens of young nearby neutron stars, we can determine their past flight paths and possible kinematic origin. Once the birth place of a neutron star in a SN is found, we would have determined the distance of the SN and the mass of the SN progenitor star.Comment: refereed NPA5 conference proceedings, in pres

Isolasi dan Identifikasi Bakteri Asam Laktat pada Teh Kombucha Lokal Bali

Teh kombucha lokal Bali merupakan produk fermentasi teh oleh yeast dan bakteri. Teh kombucha memiliki kandungan metabolit yang memiliki khasiat bagi kesehatan. Kandungan metabolit dipengaruhi oleh adanya mikroorganisme didalamnya. Bakteri asam laktat merupakan mikroorganisme yang banyak ditemukan pada produk fermentasi. Tujuan dari penelitian ini adalah mengisolasi dan mengidentifikasi bakteri asam laktat pada teh kombucha. Identifikasi bakteri asam laktat berdasarkan pada karakterisasi morfologis, dan biokimiawi Parameter morfologi meliputi bentuk sel dan metode pewarnaan gram. Parameter biokimiawi meliputi uji katalase, uji produksi gas, dan uji motilitas. Hasil penelitian diperoleh 5 isolat yang selnya berbentuk batang, Gram positif, katalase negatif, bersifat homofermentatif, dan non motil. Karakteristik tersebut memiliki kemiripan dengan ciri bakteri asam laktat genus Lactobacillus

Dampak Underperformance Setelah Penawaran Seasoned Equity Offering

Seasoned equity offerings as public offerings followed an underperformance. This underperformance can be happenned when the management try to manipulate their performance report at the time of offering and before offering. They do that because management want to get positive response in the market. This research explained that hypothesis. Using data from SEO in BEJ in 2001-2003, it this found that three year before offering, financial performance and equity performance increasing significantly. And there is underperformance three year after offering

The combined role of MRI prostate and prostate health index in improving detection of significant prostate cancer in a screening population of Chinese men

Using prostate-specific antigen (PSA) for prostate cancer (PCa) screening led to overinvestigation and overdiagnosis of indolent PCa. We aimed to investigate the value of prostate health index (PHI) and magnetic resonance imaging (MRI) prostate in an Asian PCa screening program. Men aged 50-75 years were prospectively recruited from a community-based PSA screening program. Men with PSA 4.0-10.0 ng ml -1 had PHI result analyzed. MRI prostate was offered to men with PSA 4.0-50.0 ng ml -1. A systematic prostate biopsy was offered to men with PSA 4.0-9.9 ng ml -1 and PHI ≥35, or PSA 10.0-50.0 ng ml -1. Additional targeted prostate biopsy was offered if they had PI-RADS score ≥3. Clinically significant PCa (csPCa) was defined as the International Society of Urological Pathology (ISUP) grade group (GG) ≥2 or ISUP GG 1 with involvement of ≥30% of total systematic cores. In total, 12.8% (196/1536) men had PSA ≥4.0 ng ml -1. Among 194 men with PSA 4.0-50.0 ng ml -1, 187 (96.4%) received MRI prostate. Among them, 28.3% (53/187) had PI-RADS ≥3 lesions. Moreover, 7.0% (107/1536) men were indicated for biopsy and 94.4% (101/107) men received biopsy. Among the men received biopsy, PCa, ISUP GG ≥2 PCa, and csPCa was diagnosed in 42 (41.6%), 24 (23.8%), and 34 (33.7%) men, respectively. Compared with PSA/PHI pathway in men with PSA 4.0-50.0 ng ml -1, additional MRI increased diagnoses of PCa, ISUP GG ≥2 PCa, and csPCa by 21.2% (from 33 to 40), 22.2% (from 18 to 22), and 18.5% (from 27 to 32), respectively. The benefit of additional MRI was only observed in PSA 4.0-10.0 ng ml -1, and the number of MRI needed to diagnose one additional ISUP GG ≥2 PCa was 20 in PHI ≥35 and 94 in PHI &lt;35. Among them, 45.4% (89/196) men with PSA ≥4.0 ng ml -1 avoided unnecessary biopsy with the use of PHI and MRI. A screening algorithm with PSA, PHI, and MRI could effectively diagnose csPCa while reducing unnecessary biopsies. The benefit of MRI prostate was mainly observed in PSA 4.0-9.9 ng ml -1 and PHI ≥35 group. PHI was an important risk stratification step for PCa screening.</p

Research and development activities at the Goddard Space Flight Center for the flight telerobotic servicer project

The Flight Telerobotic Servicer (FTS) is being developed by the Goddard Space Flight Center (GSFC) for performing a variety of assembly, servicing, inspection and maintenance tasks on the Space Station. The Project Office at GSFC has tasked the Engineering Directorate to assemble a robotics research and development program which will support the FTS project. The activities center around support for the Development Test Flight (DTF) on the Space Shuttle and investigations of operational problems associated with the FTS on Space Station Freedom. For the DTF, areas such as control algorithms, safety systems, and end-effectors will be developed. For FTS operations, the emphasis will be to develop a dual-arm bi-lateral force-reflecting teleoperator and use it as an FTS Operational Simulator (FTSOS). The simulator will be used to investigate operational techniques, camera configurations, operator interfacing, orbital replacement unit (ORU) designs, end-effector designs, and training techniques. After a series of test activities, reports will be generated for input to the DTF and FTS designs