Code Reader Research Articles

The Nested QR Code

The QR code is the most widely used two-dimensional barcode in the world, and it has been successfully applied in many applications in manufacturing and marketing fields. This letter presents a new variant of the QR code named the nested QR code. It comprises two QR codes with individual messages on a shared square image. The two QR codes can be read separately by slightly adjusting the distance and angle at which images are obtained using standard QR code readers. Construction methods for generating the proposed nested QR code with high decoding robustness are presented, and experimental results verify the feasibility of the proposed method.

Design and Validation of the Readable Device: A Single-Cell Electromagnetic Refreshable Braille Display.

Blindness represents one of the major disabling societal causes, impacting the life of visually impaired people and their families. For what concerns the access to written information, one of the main tools used by blind people is the traditional Braille code. This is the reason why in the recent years, there has been a technological effort to develop refreshable Braille devices. These consist of multiple physical dots that dynamically change their configuration to reproduce different sequences of the letters in Braille code. Although promising, these approaches have many drawbacks, which are mainly related to costs, design complexity, portability, and power consumption. Of note, while many solutions have been proposed for multi-cell devices, the investigation of the potentialities of single-cell refreshable systems has received little attention so far. This investigation could offer effective and viable manners to overcome the aforementioned drawbacks, likely fostering a widespread adoption of such assistive technologies with end-users. In this article, we present the design and characterization of a new cost-effective single-cell Electromagnetic Refreshable Braille Display, the Readable system. We also report on tests performed with blindfolded and blind expert Braille code readers. Results demonstrate the effectiveness of our device in correctly reproducing alphanumeric content, opening promising perspectives in every-day life applications.

LinProT: the Feasibility of a Multimedia Courseware for Optimization Methods Course

LinProT is an educational courseware for Optimization Methods. LinProT consists of a multimedia package; short video tutorials and scanned pictures QR Code Reader and HP Reveal as Augmented Reality (AR) application. There are three types of modules of Optimization Methods that contain in LinProT courseware, which are notes module, exercises module and tutorial video modules. Users can enjoy new experiences of learning via courseware involving AR application and reduce frustration in learning through boring reading. The objectives in developing LinProT are to produce courseware that allows self-directed learning that meets the needs of students studying Optimization Methods course and to assess its feasibility. This courseware is developed using the ADDIE model that involves five phases; Analysis, Design, Development, Implementation and Evaluation. The researchers tested the feasibility of the courseware to students via questionnaire. LinProT is a new way of learning, promotes interaction, provides experiences, and will improve learning efficiency in terms of time and place.

Development of a Software Package for Cattle Identification in Nigeria

Open grazing or free-range grazing is one of the methods employed by the Nigeria nomadic cattle herders to provide pasture for their cattle. This method of providing pasture for cattle comes with so many challenges among which are cow swapping, ownership disputes, rustling and cow intrusion to farmland. Some existing methods of guiding against these challenges are expensive, injurious, and unreliable to apply. The objective of this paper is to develop an enhanced and affordable software package for cow recognition and identification using a graphical user interface and information encoding method. Data analysis module with software application for the analysis of the generated code is proposed; the software application installed on a computer or smart-phone may be standalone or otherwise. Data about individual cow is digitally collected, coded and stored using necessary resources, tools, and methods. Moreover, by tagging individual cow with the generated code, and matching the code with the ones in the database using code reader, individual cow can be recognized and identified.Keywords: Open grazing; Free-range grazing; Nomadic herder; Cow identification; Pasture.

Implementation for Quick Response Code

Quick Response (QR) codes are versatile. a chunk of long trilingual text, a connected URL, an automatic SMS message, an identity card or simply regarding any data is embedded into the two-dimensional barcode. as well as moderate equipped mobile devices, QR Codes will connect the users to the data quickly and simply. The operations to retrieve or store QR codes are unbelievably easy and fast, and with mobile devices, build them the best academic tools for teaching and learning. QR codes are all over and most of the people have mobile phones equipped with QR code readers. though QR codes existed for over fifteen years, there arent such a lot of analysis applications during this space.

Bar Code Reader - an algorithmic approach to cutaneous occluding vasculopathies? part II medium vessel vasculopathies.

SummaryAimsClassifications of occluding vasculopathies (except vasculitis [1]) may exhibit some difficulties. Firstly, classifications may follow different principles, e.g. clinicopathologic findings, etiology or pathogenesis. Secondly, authors may not distinguish between vasculitis and occluding vasculopathies. Thirdly, occluding vasculopathies are systemic diseases. Organ‐specific variations make morphologic findings difficult to compare. Moreover, subtle changes are recognized in the skin, but may be invisible in other organs. Our aim was to use the skin and subcutis as a tool and clinicopathological correlation as the basic process for classification.Methods and resultsWe first differentiate in the skin between small and medium vessel occluding vasculopathies. Here we focus on medium vessel‐occluding vasculopathies. In the second step we differentiate the vessel subtypes. In the final step, we differentiate according to the time point of the coagulation/reorganization process and the involved inflammatory cells/stromal features. By applying the same procedure to the various entities and visualizing the findings in the style of bar codes, the overlaps and differences in the clinical picture as well as the histopathology become more apparent.ConclusionsOccluding vasculopathies are often not separate entities, but reaction patterns and epiphenomena. Distinguishing them from vasculitides is crucial because of the differences in pathogenesis, therapeutic approach and prognosis.

The Development of E-Tracking Application

This paper describes the development of e-Document Traking System based on Mobile Application to help patients and officers to keep track of the processes in order to resolve problems of working with in a day. This application was designed to support and enhance document tracking system. In addition to reducing paper usage, the application provides a map and give a direction in the hospital by applying QR Code scanning technology on the android operating system for data gathering. The users could see the hospital map which has shown a directory and description in each floor as the simulation. QR Code technology would run on a camera phone and QR Code Reader program for photo shooting, then it would process this QR Code as the original data for scanning by phone or the other device. To evaluate the system performance, questionnaires for system usability and Black Box Testing were used to measure expert and user satisfaction. The findings revealed that the users were more interested in QR Code application for helping patients in the hospital and the satisfaction on the system was in the highest level (X = 4.66, SD = 0.11).

Bar code reader – an algorithmic approach to cutaneous occluding vasculopathies? Part I: small vessel vasculopathies

SummaryAimsThe classifications of occluding vasculopathies may present some difficulties. Firstly, classifications may follow different principles, e.g. clinicopathological findings, etiology or pathomechanism. Secondly, authors sometimes do not distinguish between vasculitis and vasculopathy. Thirdly, vasculopathies are often systemic diseases. Organ‐specific variations make morphologic findings difficult to compare. Moreover, subtle changes may be recognized in the skin, but be invisible in other organs. Our aim was to use the skin and subcutis as tools and clinicopathological correlation as the basic process for classification.Methods and resultsIn the first step, we differentiate between small and medium vessel occluding vasculopathies in the skin, and focus in this part on small vessel occluding vasculopathies. In the second step, we differentiate among subtypes of small vessels. In the final step, we differentiate according to the time point of the coagulation/reorganization process and the involved inflammatory cells/stromal features. Applying the same procedure to the various entities and visualizing the findings with bar codes makes the similarities and differences more apparent, both clinically and with histopathology.ConclusionOccluding vasculopathies are often not separate entities, but reaction patterns and epiphenomena. Distinguishing them from vasculitides is crucial because of differences in pathogenesis, therapeutic approach and prognosis.

The histone code reader PHD finger protein 7 controls sex-linked disparities in gene expression and malignancy in Drosophila.

The notable male predominance across many human cancer types remains unexplained. Here, we show that Drosophila l(3)mbt brain tumors are more invasive and develop as malignant neoplasms more often in males than in females. By quantitative proteomics, we have identified a signature of proteins that are differentially expressed between male and female tumor samples. Prominent among them is the conserved chromatin reader PHD finger protein 7 (Phf7). We show that Phf7 depletion reduces sex-dependent differences in gene expression and suppresses the enhanced malignant traits of male tumors. Our results identify potential regulators of sex-linked tumor dimorphism and show that these genes may serve as targets to suppress sex-linked malignant traits.

A QR Code Secret Hiding Scheme against Contrast Analysis Attack for the Internet of Things

Due to the advantages of larger content and error correction capability, quick response (QR) code is commonly used as a tagging technology for the Internet of Things (IoT) recently. However, the cover message of QR code can be easily decoded by a QR code reader, which causes the security and privacy of the cover message to raise the important issues. In this paper we present a new secret hiding scheme based on QR code. The proposed scheme has low computational complexity and is suitable for low-power devices in IoT systems because of utilizing the error correction property of QR code to hide secret information. The proposed scheme hides the secret information without changing the cover message of QR code and the user can get the cover message by using a general scanner, which contributes to reducing attacker’s curiosity. The hidden secret information can be read by a special scanner with the help of the user key. One thing which is better than other known schemes is that the proposed scheme can resist contrast analysis attack. In addition, experimental results show the proposed scheme has feasibility, low computational complexity, and high hiding payload.

Practical Tools for Collection Managers: Label designer, annotation tools and a QR code reader

Kotka is a collection management system (CMS) developed by the Finnish Museum of Natural History (Luomus) and used by all major institutes with natural history collections in Finland. It is one of the primary data sources of the Finnish Biodiversity Information Facility through which the data managed in Kotka is distributed (species.fi). Kotka is designed to allow flexible development of new tools to support collection management practices. This paper describes some of the tools included in Kotka. Label designer Printed labels have traditionally been used to store and display data about specimens. In modern collection informatics their role in connecting specimens to electronic data and in collection and data curation is emphasised. Requirements for the labels are changing rapidly and different types of specimens have completely different label designs. To give the collection managers an option to design suitable labels to meet their needs, we have created a WYSIWYG (What You See is What You Get) label designer (Fig. 1). It allows users to pick desired data fields and arrange them on the label, adjust styles and sizes, and generate HTTP-URI identifiers with QR Codes (Quick Response Codes). The label designer can be used with a modern web browser or as a standalone desktop application, on both Windows and Mac. It is open source and can be integrated with other applications by using it as an Angular module or as an custom element to any site. The label designer serves both scientific natural history collection managers and amateurs managing private collections. At Luomus the tool is used both in the Kotka CMS and in the Notebook system for species occurrence records. Annotations As collections are increasingly used and managed digitally, the traditional means of quality control and data improvement are no longer sufficient. We have developed tools which allow e.g. external researchers and citizen experts to review specimen data online at species.fi (species.fi), and annotate the data by evaluating its quality, propose and/or change species identifications and include comments. The annotations are delivered to collection managers who can then use them to update and improve the specimen data at the primary data source. QR Code reader Modern specimen labels often include specimen identifiers such as QR Codes or barcodes. To improve collection management efficiency, we have made a QR Code reader application, which allows collection managers to read these codes and display specimen data quickly on a handheld device (e.g. mobile phone) or a desktop computer with a web camera. The application is open source and can be configured to connect to any system utilizing HTTP-URI identifiers.

Phosphorylation of repressive histone code readers by casein kinase 2 plays diverse roles in heterochromatin regulation.

Heterochromatin is a condensed and transcriptionally silent chromatin structure and that plays important roles in epigenetic regulation of the genome. Two types of heterochromatin exist: constitutive heterochromatin is primarily associated with trimethylation of histone H3 at lysine 9 (H3K9me3), and facultative heterochromatin with trimethylation of H3 at lysine 27 (H3K27me3). The methylated histones are bound by the chromodomain of histone code 'reader' proteins: HP1 family proteins for H3K9me3 and Polycomb family proteins for H3K27me3. Each repressive reader associates with various 'effector' proteins that provide the functional basis of heterochromatin. Heterochromatin regulation is primarily achieved by controlling histone modifications. However, recent studies have revealed that the repressive readers are phosphorylated, like other regulatory proteins, suggesting that phosphorylation also participates in heterochromatin regulation. Detailed studies have shown that phosphorylation of readers affects the binding specificities of chromodomains for methylated histone H3, as well as the binding of effector proteins. Thus, phosphorylation adds another layer to heterochromatin regulation. Interestingly, casein kinase 2, a strong and predominant kinase within the cell, is responsible for phosphorylation of repressive readers. In this commentary, I summarize the regulation of repressive readers by casein kinase 2-dependent phosphorylation and discuss the functional meaning of this modification.

P076: Do QR codes effectively engage patients in research while visiting the emergency department?

Introduction: Efforts to engage patients in research when presenting to emergency departments (EDs) have explored the utility of online tools; for example, through QR-based applications. It is unclear whether these are effective strategies for engaging patients in research activities while saving costs of in-person surveys. This study evaluated whether patients would participate in QR codes or short URL-linked surveys available in EDs across Alberta. Methods: A patient waiting room poster was developed as part of a stepped-wedge randomized controlled trial. The waiting room poster was introduced in 15 urban and regional Alberta EDs with a median annual volume of approximately 60,000. A QR-code and short URL were placed on the poster inviting patients to participate in an online survey and evaluate the poster's usefulness and acceptability. Additionally, written discharge instructions, which were part of the intervention materials, were distributed with QR-code and short URL link to surveys for patients to share their ED care experience. Patients were not prompted by any staff or research personnel to encourage use of the QR codes or the short URLs; however, a survey was conducted with ED waiting room patients in 3 urban EDs to ascertain whether they had downloaded a QR reader on their devices and the frequency of use of these applications. Results: Given the stepped-wedge nature of the study, these materials were available for a total of approximately 123 months (3 sites for 13 months, 4 sites for 10 months, 4 sites for 7 months, and 4 sites for 4 months). Over the study period, 15 patients accessed and completed the online survey linked to the QR code or the short URL placed on the posters. No patients completed the online surveys linked to the QR code or the short URL placed on the discharge instructions. The in-person survey conducted within the ED waiting room identified that 34% of respondents had a QR code reader downloaded on their phone (108/316). Of those with a QR reader, 33% reported using the reader at least once within the last 6 months. Conclusion: In this study, few patients downloaded QR readers on their electronic devices while in the ED waiting room. Without prompting, this appears to be an ineffective strategy for engaging patients in emergency medicine research. Other engagement strategies optimizing human resource investment are urgently needed to effectively conduct research in EDs.

High-payload secret hiding mechanism for QR codes

QR code is an important approach of information transmission and is widely used in our daily life. As a public patent, the message embeded in a QR code can be easily decoded by any QR code reader, thus can lead to information leaks when delivering the secret message with QR code. To overcome this weakness, we exploited the characteristics of Reed-Solomon code and turtle shell matrix to propose a simple yet efficient data embedding mechanism to hide secret messages in the QR code while maintaining the marked QR code valid. Different from the traditional schemes, the proposed scheme of this paper hides the secret messages without sacrificing the error correction capacity of QR code and is able to achieve a higher secret payload. Meanwhile, the public message of generated marked QR code still can be decoded by standard QR code reader. Such nature will reduce the risk due to the curiosity of the malicious users. Experiments were performed to evaluate the performance of the proposed scheme. Experimental results showed that the proposed scheme is robust to several common image attacks.

RANCANG BANGUN SMART DOOR LOCK MENGGUNAKAN QR CODE DAN SOLENOID

Smart Door Lock is a development of home door lock or padlock conventional manual. This study aims to create an alternative technology at home by utilizing key technologies readily available. This study uses an Arduino Uno microcontroller as the brains of the solenoid, and Android as controller QR Code reader. QR Code reader on Android run using a third party application that is Barcode Scanner. Arduino programming is done using the Arduino IDE. Bluetooth HC 05 is used to connect a barcode scanner app on Android with Arduino. Testing tool is run on Jelly Bean Android platform and the hardware and software components can be run properly. The results of the studies described in the form perncangan home door lock tool automatically uses the QR Code with Barcode Scanner app and Arduino as a control solenoid.

Budget Friendly Simulation for Clinical Nursing Education: Putting It All Together

Clinical simulation in nursing has become increasingly valuable in helping students learn tasks and assessments in a nonthreatening environment. Evaluating student assessments can promote collegiality among faculty. This article focuses on three tips for faculty used by one university to objectively capture a clinical snapshot in a cost-effective manner: 1) write one's own scenarios, 2) create assessment forms using Word, and 3) employ bar scanning with quick response code readers.

Spindlin docking protein (SPIN.DOC) interaction with SPIN1 (a histone code reader) regulates Wnt signaling

Indepth studies of protein-protein interactions are essential for discovering the molecular mechanisms and the biological context of protein functions. Even though previous study on the purification of SPIN1 interacting protein complex has shown Spindlin docking protein (SPIN.DOC) as the most abundant interacting protein partner; the study on the molecular function of SPIN.DOC is limited. Since the role of SPIN1 has been previously documented as a histone code reader and transcriptional coactivator of Wnt signaling, SPIN.DOC may probably involve in epigenetic regulation and Wnt signaling. This study aims to purify SPIN.DOC interacting protein complex and characterize the molecular function of SPIN.DOC. The finding of this study revealed that the suppression of SPIN.DOC expression in HEK293 cells by shRNA, slightly destabilized SPIN1 without any change in its chromatin localization. However, knockdown of SPIN1 decreased the expression and chromatin localization of SPIN.DOC. Nevertheless, overexpression of SPIN.DOC increased the expression and chromatin localization of SPIN1 but no change in the SPIN.DOC protein expression and chromatin localization when SPIN1 is overexpressed. TOPflash reporter assays revealed that SPIN.DOC regulates gene expression in Wnt signaling pathway and act as transcriptional repressor. Further, we show that C-terminal deleted mutant of SPIN.DOC is unable to interact with SPIN1. Unlike the wild type SPIN.DOC which acts as transcriptional repressor, overexpression of C-terminal deletion mutant activates Wnt signaling suggesting that SPIN.DOC-SPIN1 complex may act as transcriptional repressor. Overall, our data revealed new molecular functions of SPIN.DOC.

Rich QR code with three-layer information using visual secret sharing scheme

Owing to efficient machine recognition, QR codes have been widely used in many aspects such as information management, electronic identity and mobile payment. Any QR code reader has access to the message contained in a QR code; therefore, in formation security becomes a major challenge to QR codes for private use. Moreover, human vision is hard to distinguish a QR code from others because its appearance looks randomly. In this paper, we propose a visual secret sharing scheme to achieve a rich QR code with three-layer information storage. In the three layers, the first one and the second one are respectively recognizable by human vision and QR code readers, while the third layer is designed for storing private data. Additionally, we also highlight the low computational complexity of secret extraction from the rich QR code.

PROTOTYPE ALAT PEMILAH HASIL PRODUKSI OLI OTOMATIS BERDASARKAN KODE WARNA MENGGUNAKAN SENSOR TCS 230

The role of technology that is growing very rapidly influences various domains including the industrial world of the company in meeting the increasing demands of the industry. So that it requires speed, accuracy, and accuracy in the sorting process, with the advancement of informationtechnology today. At PT Agheo Langgeng Chemindo for the process of sorting oil production is still manual, namely by moving the cardboard box produced to storage using human power and lifting it one by one which is quite draining. So that manual sorting is less efficient, technologicaladvancements are needed to save time and energy, and provide more benefits for the industry. Then the research is done by using hardware and software design methods that aim to make the Oil Production Result Sorting Tool Based on Color Code, this tool uses NodeMCU ESP8226 as amicrocontroller, TCS 230 color sensor as a color code reader and uses a servo motor as a separator, as a result of this study expected to be able to help users or owners of companies to simplify the sorting process that is more efficient and can provide benefits according to industry goals.

Implementasi Sistem Payment Toll Dengan Barcode Reader Berbasis Mikrokontroler

Nowadays, to pass through the toll road, mostly riders often complain that the queue is quite long and quite long. Implementing Tool for Toll Payment Systems Using a Microcontroller-based Bar Code Reader is designed to facilitate transaction processing and make the time spent in the process of using the toll road more efficient. This paper describes the process of making automatic vehicle detection devices so that drivers do not need to stop to process the toll road usage. This tool is designed using a barcode reader as input data, Ethernet shield as an internet network (local), Arduino Uno as a process controller in sending data from barcode reader into SPT application, servo motor / as a driver to automatically open the gate and Android as notification/notification for toll road users. From the results of testing all input and output functions can be performed. In testing using a toy car unit, the reading distance of the barcode with the barcode reader is ± 7cm. In this case, the system can run well and has a pretty good performance because the barcode reader can read a maximum of ± 15cm.