bluuebunny/crossref_metadata_2025 huggingface dataset:
Posterior Inferior Cerebellar Infarct in a Younger Adult Male with Vertigo and Ataxia
Authors: VanWagner Angela J. , Doerr Benjamin , Hernandez Stephanie
Published: February 2021

Vertigo is a common complaint in patients who present to the emergency department. It can be a manifestation originating from several different disease processes. Although most patients with vertigo, especially younger patients, will have a benign disorder, up to 3% of such patients will have a cerebellar infarct. Although ruling out these types of fatal diagnoses is essential for emergency medicine physicians, this task can be especially complicated. Classic signs of a cerebellar infarct include symptoms suggestive of central vertigo with focal neurologic deficits on physical exam. Up to 10% of patients with cerebellar infarctions, however, present to the emergency department with vertigo and no focal neurologic deficits. The following case report discusses a male in his late twenties with the chief complaint of vertigo. On initial exam, he had no focal neurologic deficits but did have other concerning symptoms including severe ataxia. Imaging subsequently revealed the patient to have sustained a cerebellar infarct. When differentiating benign forms of vertigo from cerebellar infarcts or other central causes, the clinician should take into account risk factors such as central symptoms including neurologic deficits and severe ataxia. Implementing this strategy may decrease morbidity and mortality associated with cerebellar infarctions.
Pelvic Abscess with Presentation as Inability to Ambulate
Authors: Damer Sarah A.
Published: February 2021

Intra-abdominal abscesses are localized collections of pus confined in the peritoneal cavity by an inflammatory barrier. They are generally classified as intraperitoneal, retroperitoneal, or visceral and develop after perforation of a hollow viscus or by extension of infection or inflammation resulting from other conditions such as appendicitis or diverticulitis. Intra-abdominal abscesses are highly variable in presentation and clinicians must have a broad differential to avoid an inaccurate diagnosis. In this paper, presenting clinical symptoms as well as diagnosis and treatment methods are discussed in the context of this atypical presentation of a pelvic abscess. This retrospective case report presents a male patient in his early 60s who presented to the emergency department with atypical symptoms of a pelvic abscess. The author obtained all diagnostic information from patient interview and electronic health record. The patient’s history of end stage renal disease and diverticulitis with colostomy placement led to this atypical presentation of an intra-abdominal abscess. The patient’s abscess abutted the iliopsoas muscle that had given rise to his referred bilateral hip pain. This report presents a case of a male in his early 60s who presented to the hospital with complaint of bilateral hip pain and inability to ambulate. Providers admitted him to an internal medicine service and he was diagnosed with a recurrent pelvic abscess extending to his left iliopsoas muscle. Completed studies had failed to demonstrate any intrinsic pathology to the hips themselves. This case demonstrated an atypical presentation of a pelvic abscess, but brought up the theory that the etiology of the symptoms could be due to referred pain to the hips from the abscess. Further studies are required to investigate the percentage of pelvic abscess patients who primarily present with a component of hip pain.
Effectiveness of a Faculty Development Course on Delivering Learner-Centered Feedback Utilizing the Flipped Training Model
Authors: Church Brandy , Corser William D. , Harrison Angela
Published: February 2021

CONTEXT

Effective feedback is an important step in the acquisition of residents’ clinical skills and a key component of most adult learning strategies. Faculty-resident feedback discussions can facilitate resident self-assessment and reflection on their performance and motivate them to study and ask questions in areas where their knowledge may be evaluated as deficient. The flipped training model approach, a type of blended learning that reverses the traditional learning environment by delivering instructional content outside of the classroom, has garnered increased support within both graduate medical education (GME) and other healthcare disciplines.

METHODS

The overall purpose of this exploratory pilot project was to examine the pre-post impact of a faculty feedback flipped training model course provided to a convenience sample of community-based faculty learners. After receiving campus IRB approval, the authors developed a set of five primary course goals and objectives. A convenience sample of n = 17 community-based faculty who had completed the entire course were administered a pair of pre and post-course surveys regarding their overall feedback satisfaction and comfort levels for supervising residents.

RESULTS

In summary, five of the 13 total survey items increased at statistically significant levels from pre-course levels. The majority of qualitative faculty comments also positively evaluated the flipped training model approach.

CONCLUSIONS

These promising pilot findings suggest that a flipped GME faculty feedback skills training model can help improve faculty learners’ satisfaction and confidence as they supervise residents and/or medical students. The impact of these types of flipped training models for GME faculty needs to be more rigorously examined in project settings with larger samples to identify what specific types of curricular activities might prove to be most effective for diverse faculty learners in GME programs across the nation.
Ripping the Myth: Patients’ Symptomatic Descriptions of Acute Thoracic Aortic Dissection
Authors: Nagabhushan Meghna , Webley James
Published: February 2021

CONTEXT

The objective of this retrospective project was to assess the frequency with which patients presenting to an emergency department had used the descriptive terms “ripping” and “tearing” to describe their symptoms from later-confirmed acute thoracic aortic dissection.

METHODS

The authors conducted a retrospective chart review from 58 patients who had presented to two suburban and urban emergency departments with suspected acute thoracic dissection between 1997 and 2015. They reviewed charts for patients’ pain descriptors in ambulance personnel records and initial notes and dictations from ED triage nurses, staff nurses, and physicians. These pieces of documentation would have been made before the diagnosis of acute thoracic aortic dissection could been confirmed.

RESULTS

The authors identified a sample subset of 29 (50% of total charts pulled) patients later confirmed to have had an acute thoracic aorta dissection. They found that no sample patients used either the descriptors “ripping” or “tearing” when communicating their presenting symptoms. In this paper, the authors will provide several alternative terms patients have been shown to offer for this life-threatening condition.

CONCLUSIONS

Although the terms “ripping” and “tearing” have historically been associated with acute thoracic aortic dissections, these project results indicate that clinicians may consider other descriptive symptomatic terms from patients when evaluating patients’ symptoms for this potential life-threatening condition.
Implementation of an Antibiotic Therapy Protocol for Open Fractures in the Emergency Department
Authors: Endres Terrence , Danielson Kristopher , O'Neil Stephen , Brandenburg Shawn , Hall Teresa , Ross Hunter
Published: February 2021

CONTEXT

Well established in the Emergency Department (ED) literature is that the most important factor in decreasing subsequent infection rate in open fractures is the time to first administration of antibiotics. As such, the authors developed a new ED open fracture antibiotic protocol to facilitate more expeditious antibiotic administration and appropriate choice of antibiotics.

METHODS

During Phase 1 of this project, the authors identified the 2012 - 2016 historical length of time from presentation of an open fracture to the possible initiation of antibiotic therapy at their institution. Results demonstrated critical areas for improvement in both timing and types of antibiotics administered. Phase 2 of the study evaluated the effect of the new open fracture antibiotic protocol. Sample cases from both phases were then further identified based on type of open fracture, time to initiation of antibiotics from ED presentation, type of antibiotics, and time to definitive treatment. Analyses were performed using GraphPad proprietary software.

RESULTS

A random sample of 110 patients were included from Phase 1 and 27 patients from Phase 2. A total of 43 Phase 1 patients were administered cefazolin (Kefzol, Ancef); the remainder of the patients received a number of different antibiotics. During Phase 2, all 27 patients received cefazolin and Gentamycin if necessary per the new protocol. The average time to initiation of antibiotics was 0.907 hours during Phase 1 compared to 0.568 hours in Phase 2. The new protocol also significantly decreased the average time to antibiotics in ED from 2.17 hours to 1.82 hours when including EMS transfer time. Average time to definitive treatment in the operating room was 6.63 hours during Phase 1 and was significantly lowered to 3.97 hours during Phase 2.

CONCLUSIONS

Timing to initiation of antibiotics after open fractures is the most important aspect to decrease infection rates. In order to decrease these times, the authors implemented a new ED protocol that specifically stated the type of antibiotic to be given based on the open fracture without orthopedics needing to be notified before administration. Ideally, the use of such protocols in ED settings will serve to greatly decrease infection risks after open fracture.
Project to Improve the Transcription of Clinical Order Information into a Radiology Information System
Authors: Mills Michael J. , Nguyen John X. , Himelhoch Ben , Souala Abdelouahid , Khashola Anthony , Joseph Sumita , Rathousky Phillip , Gonda Roger , Juan Michael C.Y.
Published: February 2021

CONTEXT

Inaccurate and incomplete imaging order information presented to interpreting radiologists is a persistent problem in many radiology settings. Computerized Physician Order Entry processes in clinic-based settings are often inconsistent, and radiology transcription clerks continue to play a critical role in transmitting accurate content and information from referring physician orders to the radiology information system. (RIS) The purpose of this quality improvement project was to a) identify common transcription areas of deficient RIS imaging order information and b) test outcomes from an intervention to improve the content and concordance of transcribed patient information entered into the RIS.

METHODS

A random convenience sample of 500 outpatient radiographic orders were categorized according to degree and quality of concordance between the transcribed patient information documented in the RIS and the corresponding original imaging order information. During Phase I, the authors used a root-cause analysis to determine the possible etiologies for discordance between the information in original imaging orders and the information transcribed into the RIS. The intervention that was delivered included a short education session with radiology transcription clerks with placement reminder posters at transcription workstations. During Phase 2, a second random sample was obtained following the intervention, with data collection and analyses replicating the process from Phase I. A set of inferential comparisons were conducted using chi-square tests to examine for statistical significance.

RESULTS

There was an overall 44% decrease in transcription discordance (p < 0.001), and the number of cases with perfectly concordant RIS order indication documentations increased by 21% (p < 0.001). A total of 34% of transcriptions from Phase I were partially discordant due to an inadequate imaging study indication, compared to 15% during Phase II (p < 0.001). There was also a 22% increase in the number of completely concordant transcriptions free of grammatical errors (p < 0.001).

CONCLUSIONS

A short education session with radiology transcription clerks along with placement of reminder posters may significantly improve both the concordance and quality of transcribed imaging order information presented to interpreting radiologists using the RIS.
Topical Tranexamic Acid Reduces Postoperative Blood Loss in Primary Total Hip and Knee Arthroplasty
Authors: Caruthers Corey M. , Brazier Brett G. , Blackmer Michael J. , Raehtz Sandra , Etienne Gracia
Published: February 2021

CONTEXT

The purpose of this study was to assess the effectiveness of topical pre-closure application of tranexamic acid (TXA) to reduce postoperative blood loss and blood transfusion rates in primary total hip and knee arthroplasty (THA and TKA) in a private, high-volume orthopedic specialty hospital setting.

METHODS

This was a retrospective study examining 140 consecutive patients undergoing primary hip or knee arthroplasty at the sample setting by a single surgeon. The first 70 patients did not receive topical TXA (2 gm./20ml.), the final 70 did receive topical TXA. We compared the postoperative hemoglobin levels of both sample subgroups at postoperative days 1, 2, and 3.

RESULTS

Overall, the postoperative hemoglobin levels were significantly higher in the TXA group on postoperative days 1, 2, and 3 (p < 0.05). When patients who underwent THA (n = 70) were investigated separately, the hemoglobin levels were significantly higher on postoperative days 1, 2, and 3 in the group that received TXA. In the TKA group (n = 70), there was not a significantly higher hemoglobin level in patients who received TXA. There were no blood transfusions in the entire study cohort. Possibly due to the more restrictive transfusion criteria employed in this study, the total estimated prospective cost savings from use of TXA was calculated at about $116 per patient.

CONCLUSIONS

Based on these results from a high volume orthopedic specialty hospital, pre-closure topical TXA application may prove effective in reducing postoperative blood loss for some patients but have a relatively small impact on cost outcomes.
A Novel Treatment of Acne Fulminans with Adalimumab: A Case Report
Authors: Rajaii Roxanne , Globerson Jeff , Arnold Nichelle , Mahon Michael
Published: February 2021

Acne fulminans (AF) is a rare and highly inflammatory severe form of acne most commonly seen in adolescent males. Unlike acne vulgaris, AF presents with associated systemic manifestations including, but not limited to, malaise, myalgia, arthralgia, fever, anorexia, and weight loss. It is often an extremely painful condition of sudden onset and can occur years after mild or moderate acne vulgaris. While the inciting agent for this condition has been postulated to be an explosive hypersensitivity reaction to the bacterium Propionobacterium acnes, increased androgens, namely testosterone, have also been reported to play a role in the pathogenesis of this disease process. Additionally, environmental triggers such as air pollution and exposure to halogenated hydrocarbons during occupational activities in enclosed, high temperature settings have been identified as possible etiologies or exacerbating factors. AF is primarily a clinical diagnosis. Isotretinoin, in combination with systemic steroids, are generally the treatments of choice for this disease entity. A Caucasian male in his early 40’s presented to the authors’ clinic with a chief complaint of painful acneiform nodules, cysts, papules, pustules, and abscesses on his back, chest, neck, shoulders, upper arms, and thighs for several months. This case report demonstrates a refractory case of AF with significant clinical improvement after six weeks of topical treatment with subcutaneous adalimumab in combination with oral doxycycline. This case provides evidence supporting the role of Adalimumab in the treatment of AF in addition to the other inflammatory conditions currently FDA approved for treatment with this tumor-necrosis factor (TNF) alpha inhibitor. These conditions include plaque psoriasis, Crohn’s disease, hidradenitis suppurativa, psoriatic arthritis, and rheumatoid arthritis.
Contacting Patients After an Emergency Department Visit to Influence their Follow-Up Care Preferences
Authors: Bombard Matthew C. , Koaches Hannah CM , Francis Omar J.
Published: February 2021

CONTEXT

Emergency Departments (ED) have faced increasing challenges in providing quality, cost-effective patient care. In addition, healthcare administrators have sought specific techniques to improve patient perceptions of care and satisfaction as a component of Medicare reimbursement and physician contract retention. This five-month study sought to examine whether contacting patients per phone or leaving them a voicemail message after an ED visit might influence their perceptions of care and subsequent follow-up care preferences.

METHODS

A sample of 95 discharged ED patients were contacted by phone and mailed surveys rating their likelihood of return directly for future ED as well as scheduling office-based visits. Patients were stratified by whether they were: a) directly spoken to over the phone, b) left a voicemail message, or c) never successfully contacted. Mailed patient surveys utilized a five-point Likert-type scale items concerning future follow-up care preferences. Sample patients were also monitored in the electronic health record to correlate self-reported intentions with whether they actually returned to the same ED for the same chief complaint within 30 days of their initial visit.

RESULTS

Those patients who were directly contacted after ED discharge tended to be more likely to report they would return to the same ED, although not significantly (p = 0.060). Patients who were left a voicemail message were not more likely to return to the ED (p = 0.230). However, patients who were contacted directly indicated that they were more likely to adhere to received discharge instructions (p = 0.010). Neither did phoning patients significantly influence whether they followed-up with clinic providers (p = 0.999) or return to the same ED within 30 days (p = 0.999).

CONCLUSIONS

Although there are often many complex factors influencing patients’ post-ED care decisions, the results from this smaller project indicated that contacting patients after ED discharge may help influence their perceptions of care and influence some follow-up care preferences.
Examination of How the Affordable Care Act Influenced Use of Lower-Acuity Emergency Department Services
Authors: Haddad Joe , Fink Kyle , Pitus Katherine
Published: February 2021

CONTEXT

The Affordable Care Act (ACA) was implemented to make insurance accessible and reduce healthcare costs. The purpose of this study was to examine for changes in the use of lower-acuity types of Emergency Department (ED) services at two suburban Detroit facilities before, and after implementation of the ACA.

METHODS

A retrospective chart review of patients presenting to the ED at a two-campus suburban hospital system was performed over two 18-month pre- and post-ACA periods. The authors completed a review of electronic health record data and used ICD-9 code and ED visit billing and collections data. Sample patients included those who had received lower-acuity ED care within the two designated time periods. A total of 16 lower-acuity ICD-9 codes were included to gauge pre and post changes in use of ED services.

RESULTS

The authors identified 2,099 patients meeting study criteria during the pre-ACA period and 2,158 patients within the post-ACA period. A subgroup of 166,483 ED patients received care during the pre-ACA time period and 179,879 post-ACA. There was no statistically significant difference between the volume of lower-acuity ED visits during the two analytic periods (i.e., 1.26% seen pre-ACA implementation and 1.20% seen post-ACA). (p = 0.420) Neither did the absolute number of all ED visits significantly change. As could be anticipated, however, the proportion of self-pay patients pre-ACA significantly decreased from 506 (24.1%) to 191 (8.9%) post-ACA. (p < 0.001) Medicaid HMO payments also increased significantly from 824 visits pre-ACA to 1,086 visits post-ACA. (p < 0.001) In addition, Blue Cross coverage increased from 54 visits pre-ACA to 98 visits post-ACA. (p < 0.001)

CONCLUSIONS

In summary, our results revealed no significant change in the absolute volume of all ED visits or proportions of lower-acuity ED visits between the pre- and post-ACA periods. As the authors had anticipated, pre and post changes in the number of self-pay patients and those with certain types of insurance coverage were dramatic. The authors conclude that changes in lower-acuity visits to the ED in these study settings had not decreased as envisioned by ACA developers. Future studies with larger longitudinal samples are warranted to more fully investigate the longer-term implications of the ACA on use of ED services.
Comparative Evaluation of Two Obstetrical/Gynecology Resident “Boot Camps” of Different Lengths: Equivalent Practice Skills Confidence and Knowledge Levels
Authors: Postlewaite Jeffrey D. , Boes David , Finazzo Salvatore , Cantrell Cammie , Corser William D.
Published: February 2021

CONTEXT

Since the earlier time of master-apprentice type GME relationships, more residency program educators have developed various forms of boot camps to ease incoming learners into their new specialty roles as first-year residents. Such boot camps have ranged from informal informational sessions with faculty using simulation activities, to more formal workshops entailing pre- and post-event skills assessments with simulation exercises, formative feedback and debriefing sessions. The purpose of this pilot project was to examine for relative pre- and post-boot camp changes in Obstetrics/Gynecology (OB/GYN) practice skills confidence and knowledge levels in two consecutive cohorts (2014 and 2015) of first-year residents.

METHODS

Boot camps were of two different lengths: a five-day 2014 camp (n = 32 residents) and shortened three-day 2015 boot camp (n = 29 residents). Respondents from both boot camp cohorts were invited to complete the same 25-item OB/GYN practice skills confidence and knowledge survey. The first three authors developed this survey prior to the initial boot camp (2014). Revisions/adjustments were then made to content after the 2014 to pare down from the initial five days’ worth of content for the 2014 boot camp to three days for the 2015 boot camp.

RESULTS

Each of 45 sample resident respondents who provided complete pre-and post-boot camp data demonstrated improvements in self-rated practice confidence and knowledge levels. Mean per resident pre-post-boot camp survey rating levels for individual items in the shorter 2015 boot camp cohort increased by 1.096 (SD = 0.5487), over a two-fold increase for most individual items in the 2014 residents. Mean cohort differences represented a non¬-significant equivalent increase in pre-post practice confidence and knowledge levels for individual ratings items between the 2014 and 2015 cohorts (p = 0.241).

CONCLUSIONS

Based on these preliminary results, the authors conclude that it may be possible to adjust their OB/GYN boot camp from five days to three and still achieve comparable learner outcomes while delivering the same basic content.
Ensuring Patient Safety in Emergency Peripheral Ultrasound-Guided Nerve Blocks: An Evaluation of a Quality Improvement/Patient Safety Initiative
Authors: Wahl Daniel J. , Butki Andrew J. , Butki Nikolai , Wisniewski Samuel J.
Published: February 2021

CONTEXT

During the past two decades, bedside ultrasound has revolutionized the practice of emergency medicine. Physicians are now expected to be competent in utilizing ultrasound skills, for patients presenting with conditions ranging from trauma to skin evaluations. The overall purpose of this quality improvement/patient safety (QIPS) project was to evaluate the effectiveness of a pair of five-hour, hands-on didactic/training sessions, aimed at preparing a sample of emergency medicine physicians, residents and medical students to perform peripheral ultrasound-guided nerve blocks.

METHODS

The study location was set in a community-based emergency medicine program in Pontiac, Michigan. Data was collected from N = 54 emergency medicine residents, physicians and medical students. Data was collected from two training sessions in November 2017 and January 2018. The training consisted of a 12-question pre-test, followed by five hours of hands on & didactic training, with a subsequent post-test containing the same questions.

RESULTS

The authors compiled the data from both training sessions and found that the participants had an average correct percentage of 5.52 of 12 (46%) on the pre-test. After attending the training session, participants had an overall correct percentage of 9.24 of 12 (77%) on the post-test. This pre-to post-training increase of the mean scores was statistically significant, t (53) = -10.76 (p < 0.01), with an effect size (Cohen’s d) of 1.82. Post hoc power calculations utilizing the d = 1.82 effect size revealed statistical power (1- β) of 100%.

CONCLUSIONS

The results of this QIPS evaluation project suggest that emergency physicians, residents and medical students may achieve an improved understanding of key ultrasound-guided nerve block material after a single five-hour session of hands-on training and didactics. Going forward, additional studies employing larger sample sizes that allow for outcome stratification by group (emergency physicians, residents, or medical students) along with relevant demographic variables (age, years in practice, etc.) in similar settings are needed to further verify these findings.
Hepatitis A: A Case Report Example of a Growing Epidemiological Threat
Authors: Foster Adam , Hernandez Stephanie
Published: February 2021

Hepatitis A is a common worldwide cause of acute hepatitis. It has been classically associated with epidemics and is increasingly prevalent in the developing world. Generally, the illness is self-limited and only requires supportive management, reassurance, and proper hygiene instructions. This case involves a male in his early 30s who presented non-emergently with jaundice and a weeklong history of fatigue, nausea, and flu-like symptoms. The patient underwent laboratory and radiological evaluation. Test results revealed a significant transaminitis, hyperbilirubinemia, and suggestion of cholecystitis. Further testing did reveal hepatitis A infection. This case illustrates the importance of clinicians having a high clinical suspicion for the disease based on individual risk factors as this disease can have a profound epidemiological impact in terms of local outbreaks and public health expenses.
The Unusual Suspect: Gadobenate-Dimeglumine Induced Kounis Syndrome
Authors: Choudhry Faiza , Fackler Michael , Patel Mithil , Patel Vijay , Arnautovic Jelena
Published: February 2021

A myocardial bridge has traditionally been considered a benign condition characterized by an atypical intramyocardial route of a segment of one of the major coronary arteries. However, the clinical complications of myocardial bridges can be dangerous. These potential complications include acute coronary syndromes, arrhythmias, ventricular dysfunction, and sudden death. Myocardial bridges are suspected to be adjuvant of Kounis syndrome, which is defined as an acute coronary syndrome caused by an allergic reaction. Due to high epidemiologic prevalence, clinical suspicion of a myocardial bridge should be considered in atypical and typical presentations of chest pain, especially in patients with low-risk factors for atherosclerotic disease. A male in their late 30’s presented with non-ST elevation myocardial infarction suspected to be secondary to Kounis syndrome after gadobenate dimeglumine contrast media was used for an imaging study. His clinical presentation was further complicated when he was found to have a mid-left anterior descending coronary artery myocardial bridge.
ACTIVITIES TO ENCOURAGE SPEAKING ENGLISH AS A FOREIGN ANGUAGE (A CASE STUDY OF ENGLISH CLUB PARTICIPANTS IN STMIK PROVISI SEMARANG)
Authors: Shinta Qorinta
Published: February 2021

Abstract Speaking is one of the four macro skills to be developed as means of effective communication in both first and second language learning contexts. In the English as a Foreign Language pedagogy environment, how to increase speaking competence and confidence for undergraduate students tends to be an important question. This concern led to a qualitative research. The findings indicated that confidence and mastery of gramar andvocabulary, the teacher’s roles as prompter and feedback provider, and speaking activities such as information gap and role play were the key aspects that encourage students to communicate in English class better.
ANALISA ALGORITMA EXPONENTIAL SMOOTHING UNTUK SISTEM PERENCANAAN PRODUKSI KAIN BATIK DI UKM BATIK TINCTORI NATURAL DYE JAMBU
Authors: Budi santoso Agustinus , Robby Andika Kusumajaya
Published: February 2021

Abstract Digital information in the economic science developed in the upstream and downstream sectors. Developments are followed by many UKM using digital technology in marketing. The forecasting uses the Exponential Smoothing algorithm Exponential Smoothing method is a procedure of continuous repairs on the latest forecasting of data. UKM Batik Tinctori Natural Dye is one of the batik producers who produce batik from customer orders and fulfill distributor requests from batik trendsThe demand of customers and distributors has an effect on the number of production batik of Tinctori Natural Dye UKM which has resulted in any batik trend that is in demand in the following month. Forecasting is calculated using the Exponential Smoothing method and Eviews software and manual comparison to lead the accuracy of the forecasting value. This prediction can be used to predict the production of batik types from the demands of consumers and distributors. Forecasting uses several methods to make predictions using different alpha and beta constants. The Comparisons of forcasting for next three months 13, 14, 15 and forecast comparisons of original values by forecasting data that already exists three months before 10, 11, 12 to find better constants that can approach the original values.
KONSEP KOMUNIKASI DATA ANTARA PERANGKAT DENGAN WEBSITE MENGGUNAKAN WIRELESS (IoT)
Authors: Wibowo Agus , Lawrence Adi Supriyono
Published: February 2021

Abstract The more developed human needs about technology, the more research will be conducted on increasingly rapid technological developments, one example is IoT or Internet of things. It cannot be denied that IoT is a future technology that will be widely used by humans, because IoT has a concept that aims to expand the benefits of internet connectivity that is continuously connected. Allows humans to easily communicate with all equipment connected to the internet network. For this reason, the researcher developed a research on the concept of data communication between devices and interfaces. In this study the website uses wireless which is connected to the internet network. This wireless device will use the ESP8266 wireless module that has been embedded in the Wemos D1 R1 Mini.
PERANCANGAN MOBILE AR DAN 3D VR WALKTHROUGH SEBAGAI MEDIA INFORMASI KAMPUS STEKOM SEMARANG BERBASIS ANDROID
Authors: Yuli Fitrianto
Published: February 2021

Abstract The development of technology has entered the digital era of mobile, which required information media is more than just print brochures and official website, because it offered a solution for the design of a medium that can be run through mobile devices based on Android that are engaging, interactive, and follow the latest technology that augmented reality and virtual reality. The method used in this design is the System Development Life Cycle or SDLC, while supporting software used is Unity3D and Vuforia. Results from this study is the successful mobile AR and 3D-VR Walkthrough to implement and complete the on-campus media STEKOM information which has been used.
Sistem Informasi Persediaan Oli Dengan Metode ROP di CV. Sumber Lumas Semarang
Authors: Suwardi Suwardi  , Danang Danang
Published: February 2021

Inventory is one component of company assets which is very important in supporting the continuity of operational activities of trading companies. The process of inventory mutation, makes business owners required to be able to provide accurate and relevant information about inventory. This information can be generated from the use of a merchandise inventory information system which can help business owners to know the processes related to the availability of these merchandises. To monitor the process of oil transfer and oil availability on the CV. Sumber Lumas Semarang, business owners still use manual data input by using Microsoft Excel applications and hand-written stock cards. The manual use of this system causes several obstacles, including: frequent occurrences of oil inventory balances due to human error factors in recording items on stock cards, over-stock/stock out of oil inventory in warehouses and late oil inventory reporting due to data from stock cards moved into the Microsoft Excel format every month that requires precision and a lot of time. This makes the oil inventory report is not up to date. Observed at the problems faced today, CV. Sumber Lumas Semarang needs a system which can overcome the problems of merchandise inventory record and can produce relevant and accurate merchandise inventory information.
ANALISIS PERSEPSI PENGGUNA APLIKASI PAYMENT BERBASIS FINTECH MENGGUNAKAN TECHNOLOGY ACCEPTANCE MODEL (TAM)
Authors: Santoso Budi , Edwin Zusrony
Published: February 2021

Abstract The presence of Fintech (Financial Technology) services in digital financial inclusion in Indonesia has become a new market share in line with the growth of electronic commerce (e-commerce) which has increased in the last five years. Fintech is currently in great demand and is used because of the ease of doing banking transactions with the support of user friendly technology. In this study using 40 student respondents with a sampling technique using convenience sampling associated with Fintech-based payment applications using the Technology Acceptance Model (TAM) approach. The purpose of this study is to find out how enthusiastic the young generation or students are in the perception of acceptance of Fintech-based payment application technology. Based on the analysis using quantitative descriptive approach shows that most respondents strongly agree with the existence of this technology indicated by the acquisition of perceived usefulness, perceived ease of use, attitude towards using, behavioral intention to use, and actual system use percentage ranges of 45-72%.
SISTEM INFORMASI ARUS KAS BERBASIS MULTI USER PADA SEKOLAH KB-TK KRISTEN DIAN WACANA DEMAK
Authors: Purwantini Kasih , Elisa Satyaningrum  , Arsito Ari Kuncoro
Published: February 2021

Dian Wacana Demak Christian Kindergarten-Kindergarten School, which is one of the agencies engaged in the science and early childhood education. The type of data used is qualitative and quantitative data. The research objective is to design an effective and efficient school financial administration recording information system and design a school financial administration recording information system that has a system security that can maintain the correctness of the data. The research method used is the Borg and Gall R&D Development Research model, the Prototyping System Development Method to produce a product in the form of a prototype with 6 stages: Research and Data Collection, Planning, Initial Product Development, Product Testing, Product Revision, Final Trial.

The conclusion from the results of this study is that this system can facilitate the recording of cash in and cash out transactions so that there are no mistakes in recording, users can easily present cash reports more quickly so that they can minimize recording time and recording errors, and make it easier for users to print. cash reports with accurate results so as to support and speed up decision making.
Ice injected into the tropopause by deep convection – Part 2: Over the Maritime Continent
Authors: Dion Iris-Amata , Dallet Cyrille , Ricaud Philippe , Carminati Fabien , Dauhut Thibaut , Haynes Peter
Published: February 2021

Abstract. The amount of ice injected into the tropical tropopause layer has a strong radiative impact on climate. A companion paper (Part 1) used the amplitude of the diurnal cycle of ice water content (IWC) as an estimate of ice injection by deep convection, showed that the Maritime Continent (MariCont) region provides the largest injection to the upper troposphere (UT; 146 hPa) and to the tropopause level (TL; 100 hPa). This study focuses on the MariCont region and extends that approach to assess the processes, the areas and the diurnal amount and duration of ice injected over islands and over seas during the austral convective season. The model presented in the companion paper is again used to estimate the amount of ice injected (ΔIWC) by combining ice water content (IWC) measured twice a day by the Microwave Limb Sounder (MLS; Version 4.2) from 2004 to 2017 and precipitation (Prec) measurements from the Tropical Rainfall Measurement Mission (TRMM; Version 007) binned at high temporal resolution (1 h). The horizontal distribution of ΔIWC estimated from Prec (ΔIWCPrec) is presented at 2∘×2∘ horizontal resolution over the MariCont. ΔIWC is also evaluated by using the number of lightning events (Flash) from the TRMM-LIS instrument (Lightning Imaging Sensor, from 2004 to 2015 at 1 h and 0.25∘ × 0.25∘ resolution). ΔIWCPrec and ΔIWC estimated from Flash (ΔIWCFlash) are compared to ΔIWC estimated from the ERA5 reanalyses (ΔIWCERA5) with the vertical resolution degraded to that of MLS observations (ΔIWCERA5). Our study shows that the diurnal cycles of Prec and Flash are consistent with each other in phase over land but different over offshore and coastal areas of the MariCont. The observational ΔIWC range between ΔIWCPrec and ΔIWCFlash, interpreted as the uncertainty of our model in estimating the amount of ice injected, is smaller over land (where ΔIWCPrec and ΔIWCFlash agree to within 22 %) than over ocean (where differences are up to 71 %) in the UT and TL. The impact of the MLS vertical resolution on the estimation of ΔIWC is greater in the TL (difference between ΔIWCERA5 and 〈ΔIWCERA5〉 of 32 % to 139 %, depending on the study zone) than in the UT (difference of 9 % to 33 %). Considering all the methods, in the UT, estimates of ΔIWC span 4.2 to 10.0 mg m−3 over land and 0.4 to 4.4 mg m−3 over sea, and in the TL estimates of ΔIWC span 0.5 to 3.9 mg m−3 over land and 0.1 to 0.7 mg m−3 over sea. Finally, based on IWC from MLS and ERA5, Prec and Flash, this study highlights that (1) at both levels, ΔIWC estimated over land can be more than twice that estimated over sea and (2) small islands with high topography present the largest ΔIWC (e.g., island of Java).
Aerosol type classification analysis using EARLINET multiwavelength and depolarization lidar observations
Authors: Mylonaki Maria , Giannakaki Elina , Papayannis Alexandros , Papanikolaou Christina-Anna , Komppula Mika , Nicolae Doina , Papagiannopoulos Nikolaos , Amodeo Aldo , Baars Holger , Soupiona Ourania
Published: February 2021

Abstract. We introduce an automated aerosol type classification
method, called Source Classification Analysis (SCAN). SCAN is based on
predefined and characterized aerosol source regions, the time that the air
parcel spends above each geographical region, and a number of additional
criteria. The output of SCAN is compared with two independent aerosol
classification methods, which use the intensive optical parameters from
lidar data: (1) the Mahalanobis distance automatic aerosol type
classification (MD) and (2) a neural network aerosol typing algorithm
(NATALI). In this paper, data from the European Aerosol Research Lidar
Network (EARLINET) have been used. A total of 97 free tropospheric aerosol
layers from four typical EARLINET stations (i.e., Bucharest, Kuopio, Leipzig,
and Potenza) in the period 2014–2018 were classified based on a 3β+2α+1δ lidar configuration. We found that SCAN, as a method
independent of optical properties, is not affected by overlapping
optical values of different aerosol types. Furthermore, SCAN has no
limitations concerning its ability to classify different aerosol mixtures.
Additionally, it is a valuable tool to classify aerosol layers based on
even single (elastic) lidar signals in the case of lidar stations that
cannot provide a full data set (3β+2α+1δ) of
aerosol optical properties; therefore, it can work independently of the
capabilities of a lidar system. Finally, our results show that NATALI has
a lower percentage of unclassified layers (4 %), while MD has a higher
percentage of unclassified layers (50 %) and a lower percentage of cases
classified as aerosol mixtures (5 %).
Anthropogenic CO2 monitoring satellite mission: the need for multi-angle polarimetric observations
Authors: Rusli Stephanie P. , Hasekamp Otto , aan de Brugh Joost , Fu Guangliang , Meijer Yasjka , Landgraf Jochen
Published: February 2021

Abstract. Atmospheric aerosols have been known to be a major source of uncertainties in CO2 concentrations retrieved from space. In this study, we investigate the added value of multi-angle polarimeter (MAP) measurements in the context of the Copernicus Anthropogenic Carbon Dioxide Monitoring (CO2M) mission. To this end, we compare aerosol-induced XCO2 errors from standard retrievals using a spectrometer only (without MAP) with those from retrievals using both MAP and a spectrometer. MAP observations are expected to provide information about aerosols that is useful for improving XCO2 accuracy. For the purpose of this work, we generate synthetic measurements for different atmospheric and geophysical scenes over land, based on which XCO2 retrieval errors are assessed. We show that the standard XCO2 retrieval approach that makes no use of auxiliary aerosol observations returns XCO2 errors with an overall bias of 1.12 ppm and a spread (defined as half of the 15.9–84.1 percentile range) of 2.07 ppm. The latter is far higher than the required XCO2 accuracy (0.5 ppm) and precision (0.7 ppm) of the CO2M mission. Moreover, these XCO2 errors exhibit a significantly larger bias and scatter at high aerosol optical depth, high aerosol altitude, and low solar zenith angle, which could lead to worse performance in retrieving XCO2 from polluted areas where CO2 and aerosols are co-emitted. We proceed to determine MAP instrument specifications in terms of wavelength range, number of viewing angles, and measurement uncertainties that are required to achieve XCO2 accuracy and precision targets of the mission. Two different MAP instrument concepts are considered in this analysis. We find that for either concept, MAP measurement uncertainties on radiance and degree of linear polarization should be no more than 3 % and 0.003, respectively. A retrieval exercise using MAP and spectrometer measurements of the synthetic scenes is carried out for each of the two MAP concepts. The resulting XCO2 errors have an overall bias of −0.004 ppm and a spread of 0.54 ppm for one concept, and a bias of 0.02 ppm and a spread of 0.52 ppm for the other concept. Both are compliant with the CO2M mission requirements; the very low bias is especially important for proper emission estimates. For the test ensemble, we find effectively no dependence of the XCO2 errors on aerosol optical depth, altitude of the aerosol layer, and solar zenith angle. These results indicate a major improvement in the retrieved XCO2 accuracy with respect to the standard retrieval approach, which could lead to a higher data yield, better global coverage, and a more comprehensive determination of CO2 sinks and sources. As such, this outcome underlines the contribution of, and therefore the need for, a MAP instrument aboard the CO2M mission.
The northern European shelf as an increasing net sink for CO2
Authors: Becker Meike , Olsen Are , Landschützer Peter , Omar Abdirhaman , Rehder Gregor , Rödenbeck Christian , Skjelvan Ingunn
Published: February 2021

Abstract. We developed a simple method to refine existing open-ocean maps and extend them towards different coastal seas. Using a multi-linear regression
we produced monthly maps of surface ocean fCO2 in the northern European coastal seas (the North Sea, the Baltic Sea, the Norwegian Coast and the
Barents Sea) covering a time period from 1998 to 2016. A comparison with gridded Surface Ocean
CO2 Atlas (SOCAT) v5 data revealed mean biases and standard deviations of
0 ± 26 µatm in the North Sea, 0 ± 16 µatm along the Norwegian Coast, 0 ± 19 µatm in the
Barents Sea and 2 ± 42 µatm in the Baltic Sea. We used these maps to investigate trends in fCO2, pH and air–sea
CO2 flux. The surface ocean fCO2 trends are smaller than the atmospheric trend in most of the studied regions. The only
exception to this is the western part of the North Sea, where sea surface fCO2 increases by 2 µatm yr−1, which is similar
to the atmospheric trend. The Baltic Sea does not show a significant trend. Here, the variability was much larger than the expected
trends. Consistently, the pH trends were smaller than expected for an increase in fCO2 in pace with the rise of atmospheric
CO2 levels. The calculated air–sea CO2 fluxes revealed that most regions were net sinks for CO2. Only the southern
North Sea and the Baltic Sea emitted CO2 to the atmosphere. Especially in the northern regions the sink strength increased during the
studied period.