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Writing for Success
Provides instruction in steps, builds writing, reading, and critical thinking, and combines comprehensive grammar review with an introduction to paragraph writing and composition.
Compared with STEM fields, foreign language (FL) education and second language acquisition have only slowly embraced open education and the new knowledge ecologies it produces. FL educators may have been hesitant to participate in the open education movement due to a lack of research which investigates the benefits and challenges of FL learning and teaching in open environments. This book contextualizes open education in FL learning and teaching via an historical overview of the movement, along with an in-depth exploration of how the open movement affects FL education beyond the classroom context; fills the research void by exploring aspects of open second language learning and teaching across a range of educational contexts; and illustrates new ways of creating, adapting and curating FL materials that are freely shared among FL educators and students. This book is open access under a CC BY ND licence.
This presentation has points about some security concepts related to Operating Systems. William Stallings book was referred.
The Oral History of Criminology Project preserves and shares the accounts of prominent scholars of their role in shaping the evolution of the field. Through the use of taped interviews, an enduring record—an “oral history”—is established of how personal, social, historical and professional influences intersected to give rise to criminology’s landmark ideas and initiatives.
This lesson is about evaluating numerical expressions, and it was designed for adult learners who are preparing to take their High School Equivalency tests. This course will help the students evaluate numerical expressions correctly by following the correct order of operations, which includes the four basic arithmetical operations and the use of exponents and grouping symbols (parentheses, brackets, and curly braces).
This OpenStax resource aligns to introductory courses in Organizational Behavior. The text presents the theory, concepts, and applications with particular emphasis on the impact that individuals and groups can have on organizational performance and culture. An array of recurring features engages students in entrepreneurial thinking, managing change, using tools/technology, and responsible management; furthermore, the unique chapter on Social Media and Communication contextualizes the importance and implications of various platforms and communications methods.
Take a breath — where does the oxygen you inhaled come from? In our changing world, will we always have enough oxygen? What is in water that supports life? What is known? How do we know what we know about our vast oceans? These are just a few of the driving questions explored in this interactive STEAM high school curriculum module.
Students in marine science, environmental science, physics, chemistry, biology, integrated science, biotechnology and/or STEAM courses can use this curriculum module in order to use real-world, big data to investigate how our “invisible forest” influences ocean and Earth systems. Students build an art project to represent their new understanding and share this with the broader community.
This 4-week set of lessons is based on the oceanographic research of Dr. Anne Thompson of Portland State University in Oregon, which focuses on the abundant ocean phytoplankton Prochlorococcus. These interdisciplinary STEAM lessons were inspired by Dr. Thompson’s lab and fieldwork as well as many beautiful visualizations of Prochlorococcus, the ocean, and Earth. Students learn about the impact and importance of Prochlorococcus as the smallest and most abundant photosynthetic organism on our planet. Through the lessons, students act as both scientists and artists as they explore where breathable oxygen comes from and consider how to communicate the importance of tiny cells to human survival.
This module is written as a phenomenon-based, Next Generation Science Standards (NGSS) three-dimensional learning unit. Each of the lessons below also has an integrated, optional Project-Based Learning component that guides students as they complete the PBL process. Students learn to model a system and also design and evaluate questions to investigate phenomena. Students ultimately learn what is in a drop of ocean water and showcase how their drop contributes to our health and the stability and dynamics of global systems.
The research publications on Our World in Data are dedicated to a large range of global problems in health, education, violence, political power, human rights, war, poverty, inequality, energy, hunger, and humanity’s impact on the environment. On the homepage we list all the global problems and important long-term changes that we have researched.
Thanks to the work of thousands of researchers around the world who dedicate their lives to it, we often have a good understanding of how it is possible to make progress against the large problems we are facing. The world has the resources to do much better and reduce the suffering in the world.
We believe that a key reason why we fail to achieve the progress we are capable of is that we do not make enough use of this existing research and data: the important knowledge is often stored in inaccessible databases, locked away behind paywalls and buried under jargon in academic papers.
The goal of our work is to make the knowledge on the big problems accessible and understandable. As we say on our homepage, Our World in Data’s mission is to publish the “research and data to make progress against the world’s largest problems”.
Licenses: All visualizations, data, and articles produced by Our World in Data are open access under the Creative Commons BY license. You have permission to use, distribute, and reproduce these in any medium, provided the source and authors are credited. All the software and code that we write is open source and made available via GitHub under the permissive MIT license. All other material, including data produced by third parties and made available by Our World in Data, is subject to the license terms from the original third-party authors.
Recent literature hints that outcomes of clinical trials in medicine are selectively reported. If applicable to psychotic disorders, such bias would jeopardize the reliability of randomized clinical trials (RCTs) investigating antipsychotics and thus their extrapolation to clinical practice. We therefore comprehensively examined outcome reporting bias in RCTs of antipsychotic drugs by a systematic review of prespecified outcomes on ClinicalTrials.gov records of RCTs investigating antipsychotic drugs in schizophrenia and schizoaffective disorder between 1 January 2006 and 31 December 2013. These outcomes were compared with outcomes published in scientific journals. Our primary outcome measure was concordance between prespecified and published outcomes; secondary outcome measures included outcome modifications on ClinicalTrials.gov after trial inception and the effects of funding source and directionality of results on record adherence. Of the 48 RCTs, 85% did not fully adhere to the prespecified outcomes. Discrepancies between prespecified and published outcomes were found in 23% of RCTs for primary outcomes, whereas 81% of RCTs had at least one secondary outcome non-reported, newly introduced, or changed to a primary outcome in the respective publication. In total, 14% of primary and 44% of secondary prespecified outcomes were modified after trial initiation. Neither funding source (P=0.60) nor directionality of the RCT results (P=0.10) impacted ClinicalTrials.gov record adherence. Finally, the number of published safety endpoints (N=335) exceeded the number of prespecified safety outcomes by 5.5 fold. We conclude that RCTs investigating antipsychotic drugs suffer from substantial outcome reporting bias and offer suggestions to both monitor and limit such bias in the future.
In this activity, students examine pictures of pollen grains representing several species that show the structural differences that scientists use for identification. Students analyze model soil samples with material mixed in to represent pollen grains. They then determine the type and amount of 'pollen' in the samples and, using information provided to them, determine the type of vegetation and age of their samples. Finally, they make some conclusions about the likely climate at the time the pollen was shed.
(This case study was added to OER Commons as one of a batch of over 700. It has relevant information which may include medical imagery, lab results, and history where relevant. A link to the final diagnosis can be found at the end of the case study for review. The first paragraph of the case study -- typically, but not always the clinical presentation -- is provided below.)
A 19-year-old male with history of narcolepsy, but otherwise healthy with normal development and cognition, presented with one month of daily headache and a single unprovoked transient confusional episode consistent with a seizure. During the episode, the patient experienced right upper extremity incoordination, orolingual automatisms and aphasia. Physical examination was notable only for macrocephaly. MRI of the brain revealed multiple heterogeneously enhancing dural-based masses and dural nodularity with mild parenchymal volume loss, thinning and remodeling of the calvarium, remodeling of the skull base, and sagging appearance of brainstem (Figures 1a, 1b). There was no lesion in the spinal canal. Cerebrospinal fluid analysis was normal except for elevated protein content. Electroencephalography (EEG) showed left temporal focal slowing with sharp transients. Extensive serologic testing was within normal limits, notable for normal ANA, ANCA, RF, RPR, Quantiferon Gold, FSH, LH, prolactin, TSH, SPEP, antigliadin antibody, and IgG4, as well as negative HIV. CT scans of the chest, abdomen, and pelvis did not identify any visceral lesions and ophthalmologic and dermatologic examinations were essentially normal. A biopsy of the left parietal dural-based nodule was performed, but did not yield a definitive diagnosis. The patient was treated with levetiracetam and corticosteroid therapy and discharged home with planned outpatient follow up. Approximately four weeks later, he presented with recurrence of severe retro-orbital headache and emesis. A second biopsy, this time of a left frontal dural-based nodule was performed.
(This case study was added to OER Commons as one of a batch of over 700. It has relevant information which may include medical imagery, lab results, and history where relevant. A link to the final diagnosis can be found at the end of the case study for review. The first paragraph of the case study -- typically, but not always the clinical presentation -- is provided below.)
A 21 month old female child of non consanguineous parentage was admitted to the neurosurgical unit with rapidly progressing spastic paraparesis of lower limbs, following a febrile episode of 20 days duration. The developmental milestones were normal, with no history of trauma or any significant illness or hospitalization in the past. MRI of the dorsal spine revealed a large T1 - T4 right paravertebral circumscribed mass with intraspinal extension and severe cord compression suggestive of a neurofibroma with dumb-bell shaped intra and extraspinal extension (Fig. 1 and 2). On ultrasound examination there was no evidence of an abdominal mass. The tumor was approached through a right posterolateral thoracotomy. A greenish pink tumor adherent to the parietal pleura and right T2 - T4 intercostal nerves, vagus nerve and extending as small lobules into the tracheo- esophageal groove and carina was excised, leaving a small portion adherent to the vessels. Resecting the posterior ends of second, third and fourth ribs on the right and nibbling the vertebral pedicles from T1 - T4, the intraspinal portion of the lesion was totally resected. Post operatively the child had chylothorax that regressed spontaneously after 4 weeks. Chemotherapy was advised, but the parents refused. On follow up after one year, the child had regained normal power of lower limbs, but had mild spasticity. A repeat MRI after one year revealed no increase in size of the residual lesion and no evidence of metastatic disease anywhere (Fig. 3).
(This case study was added to OER Commons as one of a batch of over 700. It has relevant information which may include medical imagery, lab results, and history where relevant. A link to the final diagnosis can be found at the end of the case study for review. The first paragraph of the case study -- typically, but not always the clinical presentation -- is provided below.)
A 21-year old male with a history of intravenous heroin abuse presented to Presbyterian Hospital status post cardiac arrest. The patient was found unconscious by his father with snoring respirations. His father turned to call 911. When he returned from that phone call, he found that his son had stopped breathing. He was found with Seroquel (quetiapine) packets in his room. When paramedics arrived the patient was in asystole.
(This case study was added to OER Commons as one of a batch of over 700. It has relevant information which may include medical imagery, lab results, and history where relevant. A link to the final diagnosis can be found at the end of the case study for review. The first paragraph of the case study -- typically, but not always the clinical presentation -- is provided below.)
A female neonate was delivered at 38 weeks gestation to an 18 year-old, gravida 1, Native-American female whose antepartum course was notable for crystal methamphetamine and tobacco use early in pregnancy. Prenatal care had been initiated at 11 weeks of gestation, and an ultrasound performed at approximately 20 weeks revealed findings interpreted as a large posterior fossa cyst with mass effect. The cerebellum had not been well visualized, although the impression was that some cerebellar tissue was present. These features were overall felt to reflect a Dandy-Walker cyst. Additional ultrasonographic impressions included a probable porencephalic cyst on the right side, ventriculomegaly, possible agenesis of the corpus callosum, and overall significant absence of brain parenchyma in the right hemisphere. Serial follow-up ultrasound evaluations were performed at approximate 4 week intervals, demonstrating essentially the same intracranial ultrasonographic findings. Of note was that other organs showed appropriate growth progression. At delivery by Caesarian section, the posterior aspect of the neonate's scalp was noted to be covered by a thin, tense membrane, which ruptured during the procedure. Apgar scores were 7 and 9 at 1 minute and 5 minutes, respectively, and death occurred within hours of birth.
(This case study was added to OER Commons as one of a batch of over 700. It has relevant information which may include medical imagery, lab results, and history where relevant. A link to the final diagnosis can be found at the end of the case study for review. The first paragraph of the case study -- typically, but not always the clinical presentation -- is provided below.)
Our patient is a 38-year-old female with a past medical history significant for celiac sprue. She adheres strictly to a gluten-free diet. She is on no medications other than a multivitamin, and she has no family history of illnesses. She had her first child in 2001 (female) via normal spontaneous vaginal delivery and without complications.
(This case study was added to OER Commons as one of a batch of over 700. It has relevant information which may include medical imagery, lab results, and history where relevant. A link to the final diagnosis can be found at the end of the case study for review. The first paragraph of the case study -- typically, but not always the clinical presentation -- is provided below.)
In 1995, at the age of 29, a woman presented with headache and visual disturbances. She was found to have a capillary hemangioblastoma of the brainstem, which was then resected and pathologically confirmed. The diagnosis of von Hippel-Lindau disease was suspected at this time. One year later, she presented with worsening headache, nausea, vertigo, photophobia, and episodes of unresponsiveness. CT and MRI revealed a 4 cm mass in the right cerebellar hemisphere with effacement and displacement of the fourth ventricle. A VP shunt was placed semi-emergently, and two days later she underwent a second craniotomy for tumor resection. The diagnosis of hemangioblastoma was once again confirmed. In 2004, follow-up MRI of the brain and spine revealed multiple brainstem and cervical and thoracic cord lesions consistent with hemangioblastomas. An abdominal scan showed cystic kidneys with bilateral enhancing heterogeneous renal masses, suspicious for malignancy, as well as multiple pancreatic cysts and a paraaortic nodule of possible left adrenal origin; however a bone scan was normal. It is unclear whether or not the patient was treated for the presumed renal cell carcinoma at this time. In 2007, the then 41-year-old patient presented with a three-day history of falls and disequilibrium, progressive quadriparesis and difficulty swallowing. An MRI of the brain was performed. Axial T2 (Figure 1) and contrast enhanced T1-weighted (Figure 2) images showed a partially cystic (thick arrow) enhancing cerebellar mass, dorsal to the fourth ventricle. Extensive T2 hyperintensity was present in the pons, medulla (thin arrows) and middle cerebellar peduncles. Sagittal unenhanced (Figure 3) and contrast enhanced (Figure 4) T1-weighted images showed a markedly enhancing (black arrowhead) solid mass inferior to the fourth ventricle. Nodular leptomeningeal enhancement on the anterior surface of the pons was consistent with a leptomeningeal tumor. The patient underwent a posterior fossa craniotomy with gross total resection of the mass in April 2007.
(This case study was added to OER Commons as one of a batch of over 700. It has relevant information which may include medical imagery, lab results, and history where relevant. A link to the final diagnosis can be found at the end of the case study for review. The first paragraph of the case study -- typically, but not always the clinical presentation -- is provided below.)
A previously healthy 42-year-old man presented with two weeks of confusion, lethargy, headache, and malaise. He was diagnosed with AIDS three months prior (CD4 count 198 cells/microliter; viral load 87,100 copies/mL) and was on trimethoprim/sulfamethoxazole prophylaxis but had not started highly active antiretroviral therapy. Neurologic exam was notable for a sleepy man lacking orientation to location or date, perseveration on simple phrases and overall paucity of speech, and generalized weakness. He could not stand unassisted. Reflexes were 3+ throughout.
(This case study was added to OER Commons as one of a batch of over 700. It has relevant information which may include medical imagery, lab results, and history where relevant. A link to the final diagnosis can be found at the end of the case study for review. The first paragraph of the case study -- typically, but not always the clinical presentation -- is provided below.)
A 48-year-old right handed female presented with a 6 month history of progressive decrease of sensation in right upper and lower extremities following a fall after returning from a golf course. She attributed that fall to the loss of sensation, which improved spontaneously over 10 minutes with some residual numbness in the right leg. Her symptoms progressed and she developed difficulty in walking and lifting her right leg. She also complained of neck discomfort and chronic headaches. Neurological examination revealed mild patchy loss of pinprick and light touch sensation in the right upper and lower extremity and trunk with no consistent dermatomal distribution. There was diminished vibration sensation in the right knee. Deep tendon reflex was absent in the right ankle. Plantar reflexes were downgoing. Her gait was stiff with mild circumduction of the right leg. Rest of the motor and cranial nerve examinations were grossly normal.
(This case study was added to OER Commons as one of a batch of over 700. It has relevant information which may include medical imagery, lab results, and history where relevant. A link to the final diagnosis can be found at the end of the case study for review. The first paragraph of the case study -- typically, but not always the clinical presentation -- is provided below.)
A 53-year-old white male with a history of alcohol abuse and pancreatitis presented to the emergency department with a 6-month history of nausea, vomiting and weight loss. One month prior, he had been diagnosed with cirrhosis of the liver, and subsequently hospitalized twice with removal of two and then five liters of ascites fluid. He developed significant abdominal pain associated with nausea and vomiting. He also had difficulty tolerating oral intake and constipation. He was not eating but sustaining himself on fluids. On physical examination, the patient was not jaundiced, but his abdomen was distended with a positive fluid wave. A firm mass was noted in the left mid epigastrium judged consistent with splenomegaly. His total bilirubin was 0.5 (direct 0.1), alkaline phosphatase 102, ALT 27, AST 17, albumin 3.4, total protein 6.3, prothrombin time 9.4, INR 1, partial thromboplastin time 33.8, amylase 257 and lipase 1130. He was admitted with a diagnosis of acute pancreatitis. He was made n.p.o. and given IV fluids.