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Multi-Task FaceBoxes: A Lightweight Face Detector Based on Channel Attention and Context Information

  • Qi, Shuaihui;Yang, Jungang;Song, Xiaofeng;Jiang, Chen
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.14 no.10
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    • pp.4080-4097
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    • 2020
  • In recent years, convolutional neural network (CNN) has become the primary method for face detection. But its shortcomings are obvious, such as expensive calculation, heavy model, etc. This makes CNN difficult to use on the mobile devices which have limited computing and storage capabilities. Therefore, the design of lightweight CNN for face detection is becoming more and more important with the popularity of smartphones and mobile Internet. Based on the CPU real-time face detector FaceBoxes, we propose a multi-task lightweight face detector, which has low computing cost and higher detection precision. First, to improve the detection capability, the squeeze and excitation modules are used to extract attention between channels. Then, the textual and semantic information are extracted by shallow networks and deep networks respectively to get rich features. Finally, the landmark detection module is used to improve the detection performance for small faces and provide landmark data for face alignment. Experiments on AFW, FDDB, PASCAL, and WIDER FACE datasets show that our algorithm has achieved significant improvement in the mean average precision. Especially, on the WIDER FACE hard validation set, our algorithm outperforms the mean average precision of FaceBoxes by 7.2%. For VGA-resolution images, the running speed of our algorithm can reach 23FPS on a CPU device.

Non-Surgical Management for Benign Vocal Fold Lesions (양성 성대 병변의 비수술적 치료)

  • Lee, Sang Hyuk
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.26 no.2
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    • pp.97-100
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    • 2015
  • Benign vocal fold lesions, such as vocal nodules, polyps and Reinke's edema, usually result from chronic voice overuse. Conservative management such as voice therapy and pharmacotherapy are used as the primary treatment techniques. The main purpose of voice therapy is to identify and reduce voice misuse to achieve the optimal voice. But complete resolution may not be possible in all patients after voice therapy. Furthermore, some patients with voice-related occupations, voice rest and voice therapy are sometimes difficult, which makes it hard to carry out the treatment. When conservative therapy is ineffective, laryngeal microsurgery can be performed under general anesthesia. However, potential complications following laryngeal suspension and violation of the layered structure of the vocal fold during surgery should be considered before surgery. In recent decades, emerging literatures have demonstrated the potential usefulness of vocal fold steroid injection as an alternative treatment option for benign vocal fold lesions. The most advantageous feature of vocal fold steroid injection is the maintenance of regional anti-inflammatory effects while preventing the potential systemic adverse effects of the steroid. Many non-surgical treatment methods can be conducted using different approaches in the office setting. It can be applied as an alternative treatment modality for the management of various benign vocal fold lesions.

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Management of Liver Injuries Following Blunt Abdominal Trauma in Children (소아 복부둔상에 의한 간장손상의 치료)

  • Park, Jin-Young;Chang, Soo-Il
    • Advances in pediatric surgery
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    • v.3 no.1
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    • pp.32-40
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    • 1997
  • A clinical review was done of 31 children with blunt liver injury who were admitted to the Department of Surgery, Kyungpook National University Hospital between 1981 and 1990. Seventeen of the 31 children required laparotomy(11 primary repairs, 4 lobectomies, 2 segmentectomies). There were two deaths after laparotomy, one due to associated severe head injury and another due to multiorgan failure. The remaining 14 children, who were hemodynamically stable after initial resuscitation and who did not have signs of other associated intraabdominal injuries, were managed by nonoperative treatment. Patients were observed in a pediatric intensive care unit for at least 48 hours with repeated abdominal clinical evaluations, laboratory studies, and monitoring of vital signs. The hospital courses in all cases were uneventful and there were no late complication. A follow-up computed tomography of 7 patients showed resolution of the injury in all. The authors believe that, for children with blunt liver injuries, nonoperative management is safe and appropriate if carried out under careful continuous surgical observation in a pediatric intensive care unit.

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Genetic testing in clinical pediatric practice

  • Yoo, Han Wook
    • Clinical and Experimental Pediatrics
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    • v.53 no.3
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    • pp.273-285
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    • 2010
  • Completion of the human genome project has allowed a deeper understanding of molecular pathophysiology and has provided invaluable genomic information for the diagnosis of genetic disorders. Advent of new technologies has lead to an explosion in genetic testing. However, this overwhelming stream of genetic information often misleads physicians and patients into a misguided faith in the power of genetic testing. Moreover, genetic testing raises a number of ethical, legal, and social issues. Diagnostic genetic tests can be divided into three primary but overlapping categories: cytogenetic studies (including routine karyotyping, high-resolution karyotyping, and fluorescent in situ hybridization studies), biochemical tests, and DNA-based diagnostic tests. DNA-based testing has grown rapidly over the past decade and includes preandpostnatal testing for the diagnosis of genetic diseases, testing for carriers of genetic diseases, genetic testing for susceptibility to common non-genetic diseases, and screening for common genetic diseases in a particular population. Theoretically, once a gene's structure, function, and association with a disease are well established, the clinical application of genetic testing should be feasible. However, for routine applications in a clinical setting, such tests must satisfy a number of criteria. These criteria include an acceptable degree of clinical and analytical validity, support of a quality assurance program, possibility of modifying the course of the diagnosed disease with treatment, inclusion of pre-and postnatal genetic counseling, and determination of whether the proposed test satisfies cost-benefit criteria and should replace or complement traditional tests. In the near future, the application of genetic testing to common diseases is expected to expand and will likely be extended to include individual pharmacogenetic assessments.

Magnetic Resonance Imaging in Thoracic Disease (흉부질환의 자기공명영상)

  • Song, Koun-Sik
    • Tuberculosis and Respiratory Diseases
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    • v.40 no.4
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    • pp.345-352
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    • 1993
  • The role of magnetic resonance(MR) imaging in the evaluation of thoracic disease has been limited Nontheless, MR has inherent properties of better contrast resolution than CT allowing tissue-specific diagnosis. MR has capability of direct imaging in sagittal, coronal, and oblique planes which provide better anatomic information than axial images of CT such as lesions in the pulmonary apex, aorticopulmonary window, peridiaphragmatic region, and subcarinal region. MR is sensitive to blood flow making it an ideal imaging modality for the evaluation of cardiovascular system of the thorax without the need for intravenous contrast media. Technical developments and better control of motion artifacts have resulted in improved image quality, and clinical applications of MR imaging in thoracic diseases have been expanded. Although MR imaging is considered as a problem-solving tool in patients with equivocal CT findings, MR should be used as the primary imaging modality in the following situations: 1) Evaluation of the cardiovascular abnormalities of the thorax 2) Evaluation of the superior sulcus tumors 3) Evaluation of the chest wall invasion or mediastinal invasion by tumor 4) Evaluation of the posterior mediastinal mass, especially neurogenic tumor 5) Differentiation of fibrosis and residual or recurrent tumor, especially in lymphoma 6) Evaluation of brachial plexopathy With technical developments and fast scan capabilities, clinical indications for MR imaging in thorax will increase in the area of pulmonary parenchymal and pulmonary vascular imaging.

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Classifying Forest Species Using Hyperspectral Data in Balah Forest Reserve, Kelantan, Peninsular Malaysia

  • Zain, Ruhasmizan Mat;Ismail, Mohd Hasmadi;Zaki, Pakhriazad Hassan
    • Journal of Forest and Environmental Science
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    • v.29 no.2
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    • pp.131-137
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    • 2013
  • This study attempts to classify forest species using hyperspectral data for supporting resources management. The primary dataset used was AISA sensor. The sensor was mounted onboard the NOMAD GAF-27 aircraft at 2,000 m altitude creating a 2 m spatial resolution on the ground. Pre-processing was carried out with CALIGEO software, which automatically corrects for both geometric and radiometric distortions of the raw image data. The radiance data set was then converted to at-sensor reflectance derived from the FODIS sensor. Spectral Angle Mapper (SAM) technique was used for image classification. The spectra libraries for tree species were established after confirming the appropriate match between field spectra and pixel spectra. Results showed that the highest spectral signature in NIR range were Kembang Semangkok (Scaphium macropodum), followed by Meranti Sarang Punai (Shorea parvifolia) and Chengal (Neobalanocarpus hemii). Meanwhile, the lowest spectral response were Kasai (Pometia pinnata), Kelat (Eugenia spp.) and Merawan (Hopea beccariana), respectively. The overall accuracy obtained was 79%. Although the accuracy of SAM techniques is below the expectation level, SAM classifier was able to classify tropical tree species. In future it is believe that the most effective way of ground data collection is to use the ground object that has the strongest response to sensor for more significant tree signatures.

Recognition and Enforcement of Foreign Arbitration Awards in ASEAN (ASEAN 국가들의 외국중재판정에 관한 승인 및 집행 - 말레이시아·싱가포르·인도네시아의 법제 및 판례를 중심으로 -)

  • Kim, Young-Ju
    • Journal of Arbitration Studies
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    • v.25 no.2
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    • pp.19-47
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    • 2015
  • International arbitration is an increasingly popular means of alternative dispute resolution for cross-border commercial transactions. The primary advantage of international arbitration over court litigation is enforceability. An international arbitration award is enforceable in most countries in the world. Especially, statistics indicate of ASEAN such as Malaysia and Singapore that the vast majority of defeated companies comply with the terms of international arbitral awards against them or settle soon after the award is rendered. Unlike Malaysia and Singapore, in Indonesia, there are several grounds for refusal of enforcement of an award including where both the nature of the dispute and the agreement to arbitrate do not meet the requirements set out in the Arbitration Law. Because Indonesia does not acknowledge decisions of foreign courts, theoretically they could enforce an international arbitral award which was set aside by the court in the seat of arbitration. This paper introduces the legal system and cases of recognition and enforcement of foreign arbitration awards in ASEAN, especially Malaysia, Singapore, and Indonesia. Secondly, by comparing their law and cases, the paper emphasized the international suitability and global fitness in involved in recognition and enforcement of foreign arbitration awards.

An Optical Design of Off-axis Four-mirror-anastigmatic Telescope for Remote Sensing

  • Li, Xing Long;Xu, Min;Ren, Xian Dong;Pei, Yun Tian
    • Journal of the Optical Society of Korea
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    • v.16 no.3
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    • pp.243-246
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    • 2012
  • An off-axis four-mirror-anastigmatic telescope is presented here which is composed of two aspheric surfaces and two spherical surfaces. The entrance pupil diameter is 290 mm and the stop is located at the primary mirror. The effective focal length is 900 mm. The strip field of view for the telescope is $15^{\circ}{\times}0.2^{\circ}$ and if the telescope is launched into an orbit about 400 km altitude, the observed range width will be more than 105 km within a scene without any other auxiliary scanning instrument. The spectral range can be as wide as from visual wave band to infrared wave band in the mirror system. This telescope can be used for environmental monitoring with different detectors whose pixel is adapted to the optical resolution. In this paper, the spectral range is chosen as 3.0 -5.0 ${\mu}m$, and center distance of the pixel is 30 ${\mu}m$. And the image quality is near the diffraction limit.

Automatic Searching Algorithm for Galactic HI at Forbidden Velocities in the Inner-Galaxy ALFA Low-Latitude HI (I-GALFA) Survey

  • Kang, Ji-Hyun;Koo, Bon-Chul;Gibson, S.J.;Douglas, K.A.;Park, Geum-Sook;Peek, J.E.G.;Korpela, E.J.;Heiles, C.E.
    • The Bulletin of The Korean Astronomical Society
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    • v.36 no.1
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    • pp.86.2-86.2
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    • 2011
  • The faint wing-like features at velocities beyond the velocity boundaries of the Galactic rotation (Forbidden-Velocity Wings, FVWs) in the large-scale position-velocity diagrams of the HI surveys are thought to be associated with dynamical Galactic events. The primary candidates of these FVWs are rapidly expanding HI shells of the old Galactic supernova remnants (SNRs), which are too faint to be visible in other frequencies. The unprecedented sensitivity and resolution of the I-GALFA survey enable detection of "all" HI shells of Galactic SNRs at forbidden velocities predicted by Koo and Kang (2004). Therefore, comparing the distribution of the FVWs visible in the I-GALFA survey and that of the model will improve our understanding on the interstellar medium and the evolution of SNRs. We have been developing an automatic searching algorithm for FVWs in the I-GALFA survey to minimize the selection effects of visual inspection used in the previous FVW study. We present the searching mechanism for FVWs and the statistical properties of the automatically searched FVWs. Also, we discuss the similarities and the differences between the distribution of the identified FVWs and that of the SNRs predicted by Koo and Kang (2004).

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A Case of Drug-Induced Interstitial Pneumonitis Caused by Valproic Acid for the Treatment of Seizure Disorders

  • Kim, Se Jin;Jhun, Byung Woo;Lee, Ji Eun;Kim, Kang;Choi, Hyeun Yong
    • Tuberculosis and Respiratory Diseases
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    • v.77 no.3
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    • pp.145-148
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    • 2014
  • Valproic acid is one of the most common antiepileptic drugs used for the treatment of several seizure disorders. A 20-year-old man presented with a sudden decline of consciousness. He had a neurosurgery operation for intracranial and intraventricular hemorrhage. Following surgery, antiepileptic medication was administered to the patient in order to control his seizure events. On valproic acid treatment, he began to complain of fever and dyspnea. His symptoms persisted despite receiving empirical antibiotic treatment. All diagnostic tests for infectious causes were negative. A high-resolution computed tomography scan of the chest revealed predominantly dependent consolidation and ground-glass opacities in both lower lobes. The primary differential was drug associated with interstitial lung disease. Therefore, we discontinued valproic acid treatment and began methylprednisolone treatment. His symptoms and radiologic findings had significantly improved after receiving steroid therapy. We propose that clinicians should be made aware of the potential for valproic acid to induce lung injury.